EP4214793A1

EP4214793A1 - Feedthrough system, method for producing a feedthrough system, electrochemical cell, and electrochemical system

Info

Publication number: EP4214793A1
Application number: EP21777221.9A
Authority: EP
Inventors: Felix HAULER; Mathias Widmaier; Christian Beck
Original assignee: ElringKlinger AG
Current assignee: ElringKlinger AG
Priority date: 2020-09-15
Filing date: 2021-09-08
Publication date: 2023-07-26
Also published as: DE102020211571A1; WO2022058211A1; US20230216162A1

Abstract

In order to provide a feedthrough system which can be produced as easily as possible and has an optimised service life, it is proposed that the feedthrough system comprises a wall component which has one or more feedthrough openings, one or more lines which are guided through the one or more feedthrough openings, and a fastening device, the fastening device connecting the one or more lines to the wall component in one or more connection regions of the feedthrough system.

Description

Feedthrough system, method of making a feedthrough system, electrochemical cell and electrochemical system

The present invention relates to a feedthrough system for an electrochemical system, for example for an electrochemical cell of an electrochemical system.

Furthermore, the present invention relates to a method for producing a feedthrough system, in particular for producing a feedthrough system according to the invention.

The present invention also relates to an electrochemical cell and an electrochemical system.

An electrochemical cell is known from DE 10 2020 200 063, which comprises a contact element which connects a cell terminal to a connecting conductor and which is fixed in a connection area to a cover element of the electrochemical cell by means of a casting element.

DE 10 2012 209 397 A1 discloses a battery cell with a cell housing and an electrode coil arranged inside the cell housing, the electrode coil being covered at least in regions by a pressure-sensitive film sensor.

DE 10 2017 117 077 A1 discloses a battery cell and a method for measuring the internal pressure in a battery cell, the battery cell comprising an interior space in which a battery electrolyte is located, and a housing which seals the interior space in a gas-tight manner. The battery cell also includes a gas-tight sealed measurement chamber in which a pressure sensor is arranged and which is separated from the interior by a deformable membrane.

DE 10 2013 216 076 A1 discloses a battery cell with a cell housing surrounding the battery cell, with at least part of the cell housing being designed to deform when the pressure inside the cell housing increases, and with the battery cell having a detection device for detecting a deformation of the at least one Includes part of the cell housing.

Further electrochemical cells are known from DE 10 2017 216 873, DE 10 2017 216 874, DE 10 2017 216 886 and DE 10 2018 200 159.

The object of the present invention is to provide a feedthrough system that can be produced as easily as possible and has an optimized service life.

This object is achieved by a feedthrough system according to claim 1.

The feedthrough system for an electrochemical system includes a wall component which has one or more feedthrough openings.

It can be favorable if the wall component comprises or is formed from a metallic material. For example, the wall component includes aluminum or is formed from it.

The feedthrough system also includes one or more lines which pass through the one or more feedthrough openings. are guided, and a fastening device which connects the one or more lines in one or more connection areas of the lead-through system to the wall component.

It can be favorable if the fastening device fixes a relative position of the one or more lines to the wall component in the one or more connection areas. For example, in the one or more connection areas, a force fit and/or form fit and/or material connection is formed between the one or more lines and the wall component.

It can be favorable if the fastening device connects the one or more lines to the wall component in a fluid-tight manner in the one or more connection areas. The one or more lines are fixed to the wall component in a fluid-tight manner, for example by the fastening device.

The feedthrough system is suitable, for example, for use in an electrochemical cell, for example a lithium-ion battery and/or a lithium-ion accumulator.

A tightness to fluids can be and/or are increased by an increased pressure in an interior space of the electrochemical cell compared to the environment.

An electrochemical cell preferably comprises a housing which encloses an interior in a fluid-tight manner. In this way, chemical reactions which take place in the interior of the electrochemical cell can be protected from various environmental influences. The electrochemical cell preferably forms part of an electrochemical system, for example a battery module. For example, the electrochemical cell is suitable for use in a vehicle.

There is a risk of overcharging within the electrochemical cell, in which case fluid is released in the interior of the electrochemical cell. This leads in particular to an increase in pressure in the interior of the electrochemical cell. In particular, there is a risk of self-reinforcing heat development and overheating of the electrochemical cell or adjacent electrochemical cells, which can lead to an explosive ignition (a so-called "thermal runaway").

In order to monitor a pressure and/or a temperature in the interior of an electrochemical cell and in particular to reduce safety risks in connection with a "thermal runaway", the electrochemical cell preferably comprises a sensor device.

For example, the wall component is a housing of an electrochemical cell or a part thereof.

In particular, the wall component is a cover element of an electrochemical cell or a part thereof.

Preferably, the one or more lines electrically and/or mechanically and/or fluidically connect a first element arranged in an interior space of the electrochemical cell and a second element arranged in the vicinity of the electrochemical cell.

The one or one or more of the plurality of lines is preferably a cable for the electrical connection of a first element, which is arranged in the interior of the electrochemical cell, for example a sensor element, to a second Element which is arranged outside the interior of the electrochemical cell.

In addition or as an alternative, it can be provided that one or more lines are signal conductors, for example in the form of a pin or a screw. The one or more signal conductors are used in particular for a signal line from an interior space of an electrochemical cell to the environment of the electrochemical cell or vice versa.

It can be advantageous if the one or more connection areas each comprise or are formed from a volume surrounded by the lead-through openings.

In particular, the one or one or more of the connecting regions each extend radially inwards from an edge of one of the feedthrough openings in relation to a central axis of the feedthrough opening.

Provision can be made for the one or more of the several connection areas, for example one or more sealing elements, to protrude and/or protrude beyond the wall component in the axial direction with respect to the central axis of the respective feed-through opening.

It can be advantageous if the one or more lines are arranged in the one or more feedthrough openings in such a way that their main extension directions run at least approximately perpendicular to a main extension plane of the wall component.

For example, the wall component is part of a wall. In particular, the wall component, which forms part of a wall, is and/or will be connected to one or more other wall components to produce an overall wall. For example, the wall component welded or cast onto a base body of the wall component as an intermediate element. The lead-through system and/or the wall component can thus be of modular design.

As an alternative to a modular design of the leadthrough system and/or the wall component, it can be provided that the wall component forms the wall as a whole. For example, as already mentioned, the wall component forms a cover element of an electrochemical cell. For example, the feedthrough system and/or the wall component is non-modular.

Material stresses, for example welding stresses, when connecting individual parts of the wall can be avoided by a non-modular design of the leadthrough system and/or the wall component.

It can be advantageous if the one or more lines form part of a sensor device for monitoring a temperature and/or a pressure in an interior of an electrochemical cell.

The sensor device preferably comprises a sensor element, for example a temperature sensor and/or a pressure sensor, which is in fluidic contact with the interior of the electrochemical cell.

For example, the sensor element is in fluidic contact with the interior of the electrochemical cell via a sensor opening in the wall component.

It can be favorable if the one or more lines connect at least one sensor element for monitoring a pressure and/or a temperature in an interior of an electrochemical cell with a control and/or regulation device of the sensor device. Alternatively or additionally, the one or more lines connect at least one sensor element for monitoring a pressure and/or a temperature in an interior space of an electrochemical cell to a power source.

Embodiments of the implementation system which include a plurality of lines are particularly advantageous when the control and/or regulation device is arranged outside of the interior of the electrochemical cell.

It can be advantageous if exactly one line is passed through exactly one feedthrough opening.

In addition or as an alternative, it can be advantageous if a plurality of lines are routed through a single lead-through opening.

Embodiments of the feedthrough system which include exactly one line are particularly advantageous when the control and/or regulation device of the sensor device is arranged in the interior of the electrochemical cell.

An interference fit is preferably formed between the wall component and the one or more of the lines.

Alternatively, it can be provided that a transition fit is formed between the wall component and the one or more lines.

According to a further alternative, provision can be made for a loose fit to be formed between the wall component and the one or more lines. The formation of a loose fit can offer the advantage that a mechanical load on the one or more lines due to friction can be reduced.

After the one or more lines have been arranged in the one or more feedthrough openings, a volume formed in the one or more feedthrough openings is preferably filled and/or closed in a fluid-tight manner between edge regions of the wall component and the one or more lines.

The one or more lead-through openings are preferably at least approximately circular in a cross section taken parallel to the main plane of extent of the wall component. Alternatively, it can be provided that the one or more lead-through openings are at least approximately oval in cross-section taken parallel to the main extension plane of the wall component.

According to a further alternative, it can be provided that the one or more lead-through openings are at least approximately rectangular or slot-shaped in a cross section taken parallel to the main extension plane of the wall component.

A plurality of feedthrough openings can also be provided, which have cross-sectional shapes that differ from one another.

The one or more lines are preferably at least approximately circular in a cross section taken parallel to the main extension plane of the wall component. For example, the one or more lines are round cables.

Additionally or alternatively, the one or more lines have an at least approximately oval shape in a cross section taken parallel to the main extension plane of the wall component. For example, the one or more lines are ribbon cables.

Additionally or alternatively, the one or more lines are at least approximately rectangular in cross-section taken parallel to the main plane of extension of the wall component.

Provision can be made for the feedthrough system to have a plurality of lines which, in a cross section taken parallel to the main plane of extension of the wall component, have different shapes.

It can be favorable if the fastening device comprises one or more sealing elements which surround the one or more of the lines in one or more of the connection areas, in particular radially.

In particular, the one or more sealing elements are formed by pouring a potting material into the respective connection area.

Provision can be made for the one or more sealing elements to protrude beyond an outer surface of the wall component in an axial direction with respect to a central axis of the respective connection region, for example beyond an outside facing away from the interior of the electrochemical cell.

A thickness of the one or more sealing elements is preferably at least approximately 10% of an average thickness of the wall component.

In particular, the thickness of the one or more sealing elements is at most approximately 200% of an average thickness of the wall component. The thickness of the respective connection area and/or the average The thickness of the wall component is preferably defined perpendicular to the main plane of extension of the wall component.

As an alternative to the thickness of the one or more sealing elements being greater than the thickness of the wall component, provision can be made for the one or more sealing elements to have essentially the same thickness as the wall component or a smaller thickness than the wall component.

For example, the one or more sealing elements are casting elements.

In addition or as an alternative to forming the one or more sealing elements as casting elements, it can be provided that the one or more sealing elements are formed by injecting an injection molding material into the respective connection area.

For example, one or more of the lines are molded onto the wall component. In particular, one or more of the lines are encapsulated with the injection molding material.

It can be provided that one or more rivet elements are and/or are encapsulated. The rivet element is formed from a metallic material, for example. The one or more rivet elements can form a line in the form of a signal conductor.

Preferably, the one or more rivet elements are and/or are encapsulated together with a support element, for example a sleeve-like one, wherein the support element is and/or is pressed fluid-tight, for example by a subsequent riveting process. The one or more sealing elements preferably each accommodate one or more lines and/or completely surround one or more of the lines in each connection area.

In embodiments in which the one or more lines are fixed to the wall component by casting in a potting material or by injecting an injection molding material, it can be advantageous if the wall component has one or more receiving depressions which receive the potting material or the injection molding material.

For example, the one or more receiving recesses are trough-shaped and/or formed by embossing the wall component.

In addition or as an alternative, it can be provided that the fastening device has one or more, in particular ring-shaped, frame elements which are completely or partially filled with the casting material and/or which surround and/or delimit the respective connection area.

In embodiments in which the fastening device has one or more frame elements, sealing elements formed by filling the frame elements protrude beyond the wall component, in particular in the axial direction with respect to a central axis of a line.

The one or more frame elements are preferably placed on and/or fixed to a base body of the wall component on an outside of the wall component facing away from the interior of the electrochemical cell.

For example, one surrounded by the respective frame element

Area between the respective frame element and one or the several lines filled with the potting material. When the potting material hardens, a sealing element is created in particular.

It can be favorable if the frame element comprises or is formed from a polymer material.

Preferred polymeric materials are thermoset polymeric materials, thermoplastic polymeric materials, elastomeric polymeric materials, or mixtures thereof.

One or more hot-melt materials are preferably used as the material of the frame element.

For example, the frame member includes or is formed from one or more of the following polymeric materials:

Polyolefin, in particular polypropylene and/or polyethylene, polyester, in particular polyethylene terephthalate and/or polybutylene terephthalate, polyamide, polyimide, copolyamide, polyamide elastomer, polyether, in particular epoxy resins, polyurethane, polyurethane acrylate, polyvinyl chloride, polystyrene, polymethyl methacrylate, acryl butadiene styrene , Synthetic rubber, in particular ethylene-propylene-diene rubber, polycarbonate, polyethersulfone, polyoxymethylene, polyetheretherketone, polytetrafluoroethylene, silicone, in particular silicone rubber and/or silicone-based elastomer.

As an alternative to embodiments in which the one or more frame elements are designed as separate elements, it can be provided that the one or more frame elements are formed by elevations in a base body of the wall component.

It can be favorable if the casting material comprises or is formed from a polymer material. Preferably, the polymeric material is selected from one or more of the following materials: an epoxy resin material; a phenolic resin material; an aminoplast material; a polyurethane material; a silicone material; a polyester resin material; and an ABS resin material.

Alternatively it can be provided that the potting material is a glass material.

The material of the fastening device, for example the casting material and/or the injection molding material, is preferably diffusion-tight, in particular in a hardened state.

In particular, the material of the fastening device, for example the potting material and/or the injection molding material, is chemically resistant.

It can be advantageous if the material of the fastening device, for example the casting material and/or the injection molding material, is in a range from approx. -20°C to approx. 80°C, in particular approx. -30°C to approx. 100°C , are persistent.

In particular, the material of the fastening device, for example the casting material and/or the injection molding material, is fluid-tight at an internal pressure in an electrochemical cell of up to 10 bar.

By pouring and/or injecting material into the one or more connection areas, a number of necessary components of the feedthrough system can be reduced in comparison to feedthrough systems with other fixing methods. It can be advantageous if the casting material comprises one or more fillers. The one or more fillers are preferably inorganic fillers, in particular silicon oxide, carbonate, carbide, for example silicon carbide, nitride, for example metal nitride, metal oxide.

It can be advantageous if a material is selected for the one or more sealing elements which is designed in such a way that a drop of water on a surface of the one or more sealing elements encloses a contact angle with the surface of the respective sealing element of greater than 90°.

The contact angle is determined in particular by the DIN 55660 standard and/or the DIN EN 828 standard.

It can be advantageous if the material of the one or more sealing elements is resistant to an electrolyte of the electrochemical cell and/or is electrolyte-repellent. This can prevent electrolytes from creeping along interfaces.

In particular, a service life of the electrochemical cell can be extended in this way.

For example, the material of the one or more sealing elements exhibits a repulsive interaction with the electrolyte of the electrochemical cell.

It can be advantageous if one or more of the lines have one or more adhesion promoter structures. The one or more adhesion promoter structures are, for example, a sheath and/or a coating. It can be favorable if the respective adhesion promoter structure comprises or is formed from a polymer material which is chemically and/or physically compatible with a material of the fastening device.

A permanent connection can thus be formed between the one or more lines and the wall component. In particular, the polymer material of the adhesion promoter structure(s) is chemically and/or physically compatible with a material of the wall component.

As an alternative or in addition to a coating and/or sheathing, it can be provided that the one or more lines are subjected to a surface treatment and/or have a treated surface, in particular before they are fixed by the fastening device.

The components are preferably cleaned before the encapsulation process, in particular plasma cleaning and/or cleaning with isopropanol.

Additionally or alternatively, an adhesion promoter structure can be and/or be formed by roughening the one or more lines, for example by sandblasting the one or more lines.

In addition or as an alternative to the one or more of the lines having one or more adhesion promoter structures, it can be provided that the feedthrough system comprises one or more adhesion promoter structures which are arranged on a base body of the wall component or are formed by the wall component.

For example, the one or more adhesion promoter structures are formed by surface treatment and/or coating of the base body of the wall component. An adhesion promoter, for example, can be used as the material for the coating.

Provision can be made for the adhesion of the material of the fastening device to the wall component to be increased by a (further) surface treatment. Cleaning of the wall component, for example plasma cleaning and/or cleaning with isopropanol, is preferred as a surface treatment.

Alternatively or additionally, one or more adhesion promoter structures in the form of one or more depressions, for example pocket-shaped depressions and/or grooves, can be and/or are formed in the wall component.

For example, adhesion promoter structures can be and/or are formed by laser treatment and/or by embossing of the wall component.

For example, depressions can be introduced into the wall component by embossing and/or existing webs can be subsequently depressed, for example embossed. The indentations can be T-shaped, for example.

Additionally or alternatively, a contact surface is increased by roughening a surface of the wall component, for example by sandblasting the wall component. A resulting surface preferably forms an adhesion promoter structure.

It can be advantageous if the fastening device has a protective coating. The protective coating is and/or is arranged and/or applied, for example, to an outer surface of the fastening device. Preferably, the protective coating comprises or is formed from an oxide or a parylene material.

Aluminum oxide (Al2O3) is preferred as the oxide.

In particular, a protective function and a sealing function of the fastening device can be separated from one another by the protective coating. For example, a less chemically resistant material can be used as a potting material or as an injection molding material and the chemical resistance of this material can be increased by the protective coating.

For example, the material is and/or is applied to outer surfaces of a resulting sealing element after a casting material has been poured into the one or more connection areas or after an injection molding material has been injected into the one or more connection areas.

In addition or as an alternative to injection molding and/or casting of the one or more lines, provision can be made for the one or more lines to be fixed in one or more of the connection areas by welding to the wall component.

Alternatively or additionally, one or more of the lines, for example in the form of one or more cables and/or one or more signal conductors, can be fixed to the wall component by heat caulking.

It can be advantageous if the one or more of the lines are mechanically compressed and/or pressed in one or more of the connection areas, in particular by reshaping the wall component or by shrinkage on the wall component or by shrinkage on one or more insert elements of the fastening device. For example, a material of the wall component contracts during the manufacture of the feedthrough system, so that the one or more lines are and/or are pressed together and/or will be.

Alternatively, a material of the one or more insert members contracts toward the one or more conduits such that the one or more conduits are and/or are compressed and/or compressed.

A material of the wall component or a material of the one or more insert elements is preferably selected such that the one or more lines are compressed and/or pressed, but a flow of current and/or fluid can still take place through the one or more lines .

In embodiments in which the one or more lines are mechanically pressed together and/or pressed by deforming the wall component in one or more of the connection areas, the wall component is deformed, for example, by flanging.

In embodiments in which the fastening device comprises one or more insert elements, it can be advantageous if the one or more insert elements are formed by a casting process of a casting material, which expands during cooling due to a volume change during crystallization and/or thermal expansion of the casting process is reduced.

For example, the one or more insert members include or are formed from a glass material or aluminum. It can be favorable if the one or more of the lines are in multiple parts, with a first line component being connected electrically and/or fluidically to a second line component by means of a connecting element.

In particular, the respective connecting element is accommodated by the fastening device or forms part of the fastening device. For example, the respective connecting element is embedded in a potting material of the one or more sealing elements.

It can be advantageous if the wall component comprises one or more stabilization elements, in which one or more of the lead-through openings are arranged, wherein the one or more stabilization elements each have one or more elevations.

The one or more stabilization elements are preferably designed in one piece with a main body of the wall component. For example, the one or more stabilization elements and the base body of the wall component are made from the same sheet metal.

Alternatively, it can be provided that the one or more stabilization elements and the base body of the wall component are separate components and/or are manufactured separately from one another. For example, the one or more stabilization elements are and/or will be connected to one another in a material-to-material and/or non-positive and/or positive-locking manner.

The one or more elevations preferably extend away from a base body of the respective stabilization element, in particular along a direction running perpendicularly to a main extension plane of the wall component. In particular, the one or more elevations extend away from the base body of the respective stabilization element between one or more post-processed areas of the respective stabilization element.

It can be advantageous if the one or more elevations are formed by the one or more post-processed areas.

It can be favorable if the one or more stabilization elements comprise or are formed from a metallic material, for example aluminum.

It can be advantageous if the one or more post-processed areas are web-shaped.

It can be favorable if the one or more elevations are at least approximately triangular in a cross section taken parallel to the main extension plane of the wall component.

In addition or as an alternative, it can be provided that the one or more elevations are at least approximately rectangular or oval in a cross section taken parallel to the main extension plane of the wall component.

The one or more post-processed areas are preferably formed and/or processed in an embossing process and/or a milling process.

It can be provided that the one or more stabilization elements each have a bulge around the respective feedthrough opening and/or around a sensor opening. For example, one or more bulges are formed by reworked areas, which are delimited by arched and/or curved walls of the one or more elevations.

For example, a peripheral frame is formed by one or more of the post-processed areas, which in particular forms an edge of the or one or more of the connecting areas.

The one or more stabilization elements preferably serve as a receptacle and/or basin for casting material.

In and/or from the one or more post-processed areas, potting material can preferably be added in a potting process. The one or more post-processed areas form, for example, part of a casting material guide channel, along which the casting material in a free-flowing state flows and/or flows during production of the feedthrough system.

The one or more elevations and the one or more post-processed areas preferably form an enlarged surface of the wall component in the one or more connection areas. In particular, adhesion of the potting material to the wall component is optimized by the one or more elevations and the one or more post-processed areas.

According to a preferred embodiment, the wall component includes exactly one stabilization element, which in particular forms the connection area.

The one or more elevations preferably form stiffening areas. The one or more elevations are and/or are preferably flown around and/or surrounded by potting material.

It can be advantageous if the one or more post-processed areas have a reduced material thickness compared to the one or more elevations.

A thickness of the stabilization element in the area of the one or more reworked areas is preferably about 80% or less, in particular about 60% or less, for example about 40% or less, of an average thickness of the wall component outside of the respective connection area and/or an average thickness of the one or more bumps.

The thickness of the stabilization element in the area of the one or more post-processed areas is preferably about 1% or more, in particular about 2% or more, for example about 5% or more, of an average thickness of the wall component outside of the respective connection area and/or an average thickness of the one or more bumps.

The thickness of said elements is preferably defined perpendicular to the main plane of extent of the wall component.

The one or more elevations are preferably completely surrounded by the one or more post-processed areas in a plane arranged parallel to the main extension plane of the wall component.

In particular, the one or more post-processed areas form indentations in the respective stabilization element. A surface structuring and/or a contouring of the wall component is preferably formed by the one or more elevations and the one or more post-processed areas.

It can be advantageous if the fastening device comprises one or more support elements for supporting and/or positioning the one or one or more lines. Preferably, the one or more support elements are disc-shaped and/or sleeve-shaped.

The one or more support elements are preferably separately manufactured and/or separately manageable components.

For example, one or more of the support elements on an outside of the wall component facing away from the interior and/or on an inside of the wall component facing the interior protrude in the axial direction with respect to a central axis of a line. In particular, the one or more support elements form an overhang beyond the one or more feedthrough openings in the axial direction with respect to a central axis of the respective line.

According to a preferred embodiment, two support elements are arranged one inside the other, with one or more lines being accommodated in the radially inner support element. The two support elements project over and/or in particular on opposite sides of the wall component.

A feed-through channel is preferably formed by the one or more support elements.

The one or more sealing elements and the one or more supporting elements are preferably components that are different from one another. For example, the one or more support members in the one or are cast into the plurality of connection regions by means of the casting material and are and/or are thus each accommodated by a sealing element formed by curing of the casting material.

In addition or as an alternative to one or more separate support elements, it can be provided that the wall component has one or more elevations in a direction perpendicular to the main plane of extent of the wall component, which in particular form part of a form fit with one or more lines. The elevations preferably form support elements. This design of the support elements can be advantageous in particular for a pressure sensor.

The one or more support elements are used in particular for thermal and/or electrical insulation. Additionally or alternatively, the one or more support elements serve to center the line(s) accommodated therein and/or to position the respective line(s).

Particularly in the case of lines which are at least approximately circular in a cross-section taken parallel to the main extension plane of the wall component, it can be advantageous if a non-positive connection is formed between the one or more support elements and the one or more lines and/or the wall component. This can be advantageous in particular when forming a transition fit between the one or more lines and the wall component.

As an alternative to being cast in using the casting material, the one or more support elements can also be fixed to the wall component by spraying and/or overmolding. Alternatively, it can be provided that the one or more support elements are fixed to the wall component by means of clamps, for example one support element is clamped and/or clamped in each case in a feed-through opening.

The one or more support elements can form relief elements for strain relief, for example.

It can be favorable if the fastening device comprises one or more relief elements, by means of which the one or more of the lines on one side of the wall component, for example on an outside facing away from an interior, materially, for example by casting, and/or form-fitting, for example by forming a relief element as a clamp or sealing bead, and/or fixed in a non-positive manner.

It can be advantageous if the one or more load-relieving elements are separate components which are materially fixed, for example by gluing and/or welding, to the wall component and, for example, fix one or more lines in a form-fitting and/or non-positive manner.

As an alternative to a cohesive attachment, one or more relief elements are each placed around one or more lines and clipped onto the wall component and/or clipped to the wall component.

In addition or as an alternative, provision can be made for the one or more lines to be formed by a stress-relieving element, in particular a cord-shaped one, which is pressed against the respective line, for example in the free-flowing state, during production. The relief element is a sealing bead, for example. In addition or as an alternative, one or more relief elements can be formed by depressions in the wall component, in which the one or more lines are cohesively fixed, for example in a casting process.

The one or more indentations in the wall component can be part of the receiving indentations that form part of the connection area.

Alternatively, it can be provided that the depressions in the wall component, which form relief elements, are spatially separated from the one or more receiving depressions, which form part of a connection area.

Provision can be made for one or more frame elements to be arranged and/or fixed on a side of the wall component, for example an outside facing away from the interior of the housing, which is filled with casting material.

For example, one or more lines are pressed into and/or immersed in the casting material before the casting material hardens.

The invention also relates to a method for producing a feedthrough system, in particular a feedthrough system according to the invention.

In this regard, the invention is based on the object of providing a method by means of which a feedthrough system which has an optimized service life can be produced as simply as possible.

According to the invention, this object is achieved by a method according to the independent method claim. According to the method, a wall component is provided which has one or more feedthrough openings. One or more wires are routed through the one or more feedthrough openings.

The one or more lines are fixed to the wall component in one or more connection areas by means of a fastening device.

In particular, the one or more lines are fixed to the wall component in such a way that a relative position of the one or more lines is fixed relative to the wall component, in particular in a fluid-tight manner.

One or more of the features mentioned in connection with the feedthrough system according to the invention and/or one or more of the advantages mentioned in connection with the feedthrough system according to the invention apply in particular equally to the method according to the invention.

It can be favorable if one or more elevations are formed by embossing or milling a stabilization element.

It can be advantageous if the one or more lines are fixed in a two-stage casting process relative to the wall component and/or on the wall component and/or in the one or more feedthrough openings.

The one or more lines are preferably fixed with a fixing material relative to the wall component and/or in the one or more feedthrough openings. In particular, subsequently, for example after the fixing material has been partially or completely dried and/or cured, a casting filling material is poured and/or filled into the one or more connection regions.

For example, the fixing material is dried and/or cured until it has a viscosity of about ^{10 10} mPa·s or more at 25°C.

In particular, just enough fixing material is used so that the one or more lines are fixed to the wall component and/or in the one or more feedthrough openings.

The fixing material and/or the casting filling material are preferably casting materials.

It can be favorable if a casting material, for example the casting filling material, flows around one or more elevations of a stabilization element of the wall component.

The present invention further relates to an electrochemical cell.

In this regard, the invention is based on the object of providing an electrochemical cell which has an optimized service life.

According to the invention, this object is achieved by an electrochemical cell according to the independent claim directed to an electrochemical cell.

The electrochemical cell comprises one or more feedthrough systems according to the invention. One or more of the features mentioned in connection with the feedthrough system according to the invention and/or one or more of the advantages mentioned in connection with the feedthrough system according to the invention apply in particular equally to the electrochemical cell according to the invention.

In particular, part of a housing of the electrochemical cell, which surrounds an interior space of the electrochemical cell, forms a wall component of at least one of the one or more leadthrough systems.

For example, a cover element of the housing of the electrochemical cell forms a wall component of at least one of the one or more feedthrough systems, in particular all wall components of all feedthrough systems.

Provision can be made for one or more leadthrough systems to form part of a housing, for example the cover element, of the electrochemical cell.

Alternatively, it can be provided that one or more of the feedthrough systems form part of the cover element. For example, one or more wall components of one or more leadthrough systems are cast into and/or cast onto a base body of the cover element of the electrochemical cell.

It can be advantageous if one or more of the feedthrough systems form a component of a terminal feedthrough in the area in which a connecting conductor of the electrochemical cell is fixed to the cover element of the electrochemical cell.

In addition or as an alternative, it can be provided that one or more of the implementation systems comprise or form a bursting element which is arranged and/or designed in such a way that it Exceeding a critical pressure and / or a critical temperature in the interior of the electrochemical cell breaks.

The feedthrough system, which includes or forms a bursting element, is preferably welded to a base body of the cover element.

In addition or as an alternative, it can be provided that one or more of the feedthrough systems include or form a safety fuse. The safety fuse preferably melts when a critical electric current is exceeded and thus interrupts a current flow from the electrochemical element (cell winding) to a cell terminal.

It can be advantageous if the respective line is destroyed or damaged when the bursting element breaks and/or the fuse is triggered, in particular in such a way that a current, for example an information current, is interrupted.

Provision can be made for the one or more of the leadthrough systems to comprise or form an electrolyte filling opening for filling and/or removing electrolyte from the interior of the electrochemical cell.

In this way, the implementation system can fulfill several functions.

Furthermore, the present invention includes an electrochemical system comprising one or more electrochemical cells according to the invention.

In this regard, the invention is based on the object of providing an electrochemical system which has an optimized service life.

According to the invention, this object is achieved by an electrochemical system according to the independent claim directed to an electrochemical system. One or more of the features mentioned in connection with the electrochemical cell according to the invention and/or one or more of the advantages mentioned in connection with the electrochemical cell according to the invention apply equally to the electrochemical system in particular.

Further features and/or advantages of the invention are the subject of the following description and the graphic representation of exemplary embodiments.

Show it:

Fig. 1 shows a schematic plan view of a wall component of an embodiment of a feedthrough system in a state before the feedthrough system is assembled, the wall component having a plurality of recessed areas in which the wall component has a reduced wall thickness compared to non-recessed areas, the wall component in a Top view is at least approximately rectangular;

2 shows a schematic perspective illustration of a wall component of a further embodiment of a feedthrough system in a state before the feedthrough system is assembled, the wall component being at least approximately circular in plan view;

3 shows a schematic plan view of the feedthrough system from FIG. 2 in an assembled state, with a line in the form of a cable passing through a feedthrough opening which is arranged in a recessed area of the wall component. is guided and is connected to the wall component in a connection area of the lead-through system by a fastening device;

4 shows a representation of the feedthrough system from FIGS. 2 and 3 corresponding to FIG the wall member is applied;

5 shows a schematic sectional illustration of the feedthrough system from FIGS. 1 to 4 in a ready-to-use state, with an area surrounded by the frame element being filled with a casting material and thus forming a sealing element;

6 shows a schematic sectional illustration of a further embodiment of a feedthrough system, in which the wall component is essentially flat and/or planar, with the exception of the openings;

7 shows a schematic sectional illustration of a further embodiment of a feedthrough system in which no separate frame element is provided;

8 shows a schematic sectional illustration of a further embodiment of a feedthrough system, in which the cable and edge regions of the wall component are surrounded by a plug-like potting material in the connection region;

Fig. 9 is a schematic sectional view of several cables of a feedthrough system, with a single cable through a single lead-through opening of the lead-through system is passed through;

10 shows a schematic sectional illustration of a plurality of cables of a feedthrough system, the plurality of cables being guided together through a single feedthrough opening of the feedthrough system;

11 shows a schematic sectional representation of a cable of a lead-through system, which forms a loose fit with the wall component in the region of the lead-through opening;

12 shows a schematic sectional representation of a cable of a feedthrough system, which forms a transition fit with the wall component in the area of the feedthrough opening;

13 shows a schematic sectional representation of a cable of a feedthrough system, which forms a press fit with the wall component in the area of the feedthrough opening;

14 shows a schematic sectional illustration of a further embodiment of a lead-through system, in which the cable is clamped in the lead-through opening by pressing;

15 shows a schematic sectional illustration of a further embodiment of a lead-through system, in which the cable is fixed in the lead-through opening by material expansion of an insert element as part of shrinkage;

16 shows a schematic sectional illustration of a further embodiment of a lead-through system, in which the cable is radially surrounded by a support element in the region of the lead-through opening; 17 shows a schematic sectional representation of a further embodiment of a feedthrough system, in which a support element radially surrounds a connecting element for connecting two cable components;

18 shows a schematic sectional illustration of a further embodiment of a feedthrough system, in which two support elements are arranged in an interlocking manner, with an inner support element of the two support elements receiving the cable and with an outer support element of the two support elements surrounding the inner support element from the outside;

Fig. 19 shows a schematic sectional view of another embodiment of a feedthrough system, in which two support elements are provided, one of the two support elements having an at least approximately T-shaped cross section and receiving a connecting element for connecting two cable components, and another of the two support elements being at least approximately disk-shaped is trained;

Fig. 20 shows a schematic sectional view of a further embodiment of a feed-through system, in which a stress-relieving element is accommodated in the bushing opening, the stress-relieving element receiving the cable and/or radially surrounding it, the stress-relieving element cohesively, for example by injection molding or casting, and/or with a non-positive fit and /or is positively fixed, for example by clamping, on the wall component;

Fig. 21 is a schematic sectional view of a further embodiment of a feedthrough system, in which a relief element is formed in that the cable in a Receiving recess of the wall component is accommodated in a casting material;

22 shows a schematic sectional illustration of a further embodiment of a feedthrough system, in which a stress-relieving element is formed in that the cable is accommodated in a potting material in an area surrounded by a frame element;

23 shows a schematic sectional illustration of a further embodiment of a feedthrough system, in which a separately manageable stress-relieving element is provided, which partially surrounds the cable on its lateral surface and which is connected to the wall component in a materially bonded manner, for example by gluing and/or welding;

24 shows a schematic sectional illustration of a further embodiment of a feedthrough system, in which a separately manageable stress-relieving element is provided, which partially surrounds the cable on its lateral surface and which is connected to the wall component in a positive and/or non-positive manner, for example by a clip connection;

25 shows an illustration corresponding to FIG. 2 of a further embodiment of a feedthrough system, according to which the wall component comprises a stabilization element which has a surface structure in the form of one or more elevations between post-processed areas;

FIG. 26 is a schematic perspective view of an electrochemical cell that includes a feedthrough system substantially similar to the embodiment shown in FIG. 25. FIG corresponds, wherein the wall component forms a cover element of the electrochemical cell; and

FIG. 27 shows an enlarged sectional illustration through the feedthrough system from FIG. 26, with a sensor device from FIG. 26 being shown only partially.

Identical or functionally equivalent elements are provided with the same reference symbols in all figures.

1 shows a wall component 102 of an embodiment of a lead-through system 100, which is not shown in the drawing as a whole.

In the present case, wall component 102 is a cover element 104. Cover element 104 forms, for example, part of a housing 106 of an electrochemical cell 108, which is not shown in the drawing as a whole. Electrochemical cell 108 preferably forms part of an electrochemical system 110, which is also not shown in the drawing as a whole.

The electrochemical system 110 is particularly suitable for use in a vehicle.

For example, the electrochemical cell 108 is a lithium ion battery and/or a lithium ion accumulator.

As an alternative to the wall component 102 forming the entire cover element 104 , it can be provided that the wall component 102 forms only part of a cover element 104 . For example, the wall component 102 is inserted into a recess provided for this purpose in the cover element 104 and, in particular, fixed in a fluid-tight manner. A fluid-tight fixing takes place, for example, by welding or casting. This makes modular training possible. It can be advantageous if the wall component 102 comprises or is formed from a metallic material. Aluminum, for example, is suitable as a metallic material.

The housing 106 of the electrochemical cell 108 preferably also comprises a further, for example cup-shaped, housing component which, together with the cover element 104, surrounds an interior of the electrochemical cell 108 (not shown).

In the present case, the wall component 102 comprises a lead-through opening 112 which serves to lead a line 115 through the wall component 102 .

For use of the wall component 102 in a prismatic electrochemical cell 108, it can be advantageous if the wall component 102 is at least approximately rectangular in cross-section taken parallel to its main plane of extension.

With regard to the further description of the wall component 102 shown in FIG. 1 in a state before assembly and of the lead-through system 100, reference is made to the following description of the embodiment of a lead-through system 100 shown in FIGS. 2 to 5.

The further embodiment of a feedthrough system 100 shown in FIGS. 2 to 5 differs from the embodiment shown in FIG. 1 in terms of structure and function essentially in that the wall component 102 is at least approximately circular in cross-section taken parallel to its main direction of extension.

In the present case, the lead-through opening 112 is at least approximately slot-shaped and/or surrounded by a recessed region 116 of the wall component 102, in which the wall component 102 has a has reduced thickness. In the present case, the recessed area 116 around the lead-through opening 112 forms a receiving recess 136 of the wall component 102.

The receiving recess 136 is preferably formed by embossing and/or milling the wall component 102 .

For example, the thickness of the wall component 102 in the area of the receiving recess 136 is approximately 10% or more, in particular approximately 20% or more, less than the average thickness of the wall component 102 in adjacent areas.

The thickness of the wall component 102 in the area of the receiving recess 136 is preferably about 90% or less, in particular about 80% or less, less than the average thickness of the wall component 102 in adjacent areas.

The thickness of the wall component 102 is preferably defined perpendicular to its main plane of extension.

It can be advantageous if the lead-through opening 112 is arranged centrally and/or centrally in the receiving recess 136 .

As mentioned in connection with FIG. 1 , a line 115 is routed through the feed-through opening 112 , in particular in such a way that the line 115 passes through the feed-through opening 112 from an environment of the electrochemical cell 108 into the interior.

In the present case, the line 115 is in the form of a cable 114 which, for example, forms part of a sensor device 120 . The cable 114 is a ribbon cable, for example. Alternatively, a round cable can also be used as the cable 114 . The sensor device 120 is preferably used to monitor a pressure and/or a temperature in the interior of the electrochemical cell 108. In this way, for example, a thermal event can be detected in good time and, in particular, prevented.

According to alternative embodiments, line 115 may be a fluid line.

As an alternative to forming the line 115 as a cable 114, it can be provided that the line 115 is a signal conductor, for example in the form of a pin or a screw.

A lead 115 in the form of a signal conductor such as a pin or screw may be provided in addition to cable 114 (not shown).

It can be advantageous if the wall component 102 has a further recessed area 116 which serves to accommodate a sensor element 118 . With regard to the thickness and design of the further recessed area, reference is made to the explanations regarding the receiving recess 136 .

The sensor element 118 forms, for example, a component of the sensor device 120 (cf. in particular FIGS. 3 and 5).

According to a preferred embodiment, a pressure sensor and/or a temperature sensor is used as sensor element 118 .

The further recessed area 116, which in particular accommodates the sensor element 118, comprises, for example, an at least approximately cuboid central area 122 and adjoining extension sections 124, which form a cross shape, for example. A sensor opening 126 is arranged, for example, at least approximately centrally in the central region 122 of the further recessed region 116 . Sensor opening 126 serves in particular to connect sensor element 118 to the interior of electrochemical cell 108.

Feedthrough system 100 preferably includes a fastening device 128 for fastening cable 114 and/or sensor element 118 to wall component 102.

According to the embodiment shown in FIGS. 2 to 5, the fastening device 128 comprises a sealing element 130 which surrounds the cable 114 in a connection area 132 and/or seals a volume between edge areas of the lead-through opening 112 and the cable 114 in a fluid-tight manner.

In the present case, the sealing element 130 of the fastening device 128 surrounds not only the cable 114 but also the sensor element 118 and/or fills a volume formed between the sensor element 118 and the cable 114 in the connection region 132 in a fluid-tight manner.

It can be advantageous if the fastening device 128 has one or more, in the present case one, frame element(s) 134, which surrounds and/or delimits the connection region 132, for example on an outside facing away from the interior of the electrochemical cell 108.

In the present case, the frame element 134 has at least approximately a cuboid shape in a cross section taken parallel to a main extension plane of the wall component 102 .

In alternative embodiments, for example when the feedthrough opening 112 is at least approximately circular, it can be provided that that the frame element 134 is at least approximately oval, in particular circular, in a cross section taken parallel to the main extension plane of the wall component 102 .

For example, the frame element 134 is a sealing bead and/or dispenser bead.

As can be seen in particular in FIG. 4 , it can be advantageous if a material in the form of a pasty mass is applied directly to the wall component 102 in order to produce the feedthrough system 100 to form the frame element 134 . The material is then cured, in particular by drying and/or crosslinking, with the frame element 134 being formed.

The frame member 134 is cord-shaped, for example.

In order to form a closed and/or gapless frame element 134, it can be advantageous if an application outside the desired shape of the resulting frame element 134 is started and/or ended and corresponding excess lengths are then removed. In this way, gaps in the frame element 134 can be avoided.

A height of frame element 134 in a direction perpendicular to the main plane of extent of wall component 102 is preferably at least approximately 5% of an average thickness of wall component 102.

It can be advantageous if the frame element 134 comprises or is formed from a polymer material.

Preferred polymeric materials are thermoset polymeric materials, thermoplastic polymeric materials, elastomeric polymeric materials, or mixtures thereof. For example, the frame member 134 includes or is formed from one or more of the following polymeric materials:

For example, one or more hot melt materials are used for the frame member 134 material.

As an alternative to embodiments in which the frame element 134 is designed as a separate element, it can be provided that the frame element 134 is formed by one or more elevations in a base body of the wall component 102, which are introduced into the base body of the wall component 102, for example by embossing ( not shown).

It can be advantageous if a volume surrounded by the frame element 134 is filled with a casting material, for example after drying and/or curing of the material of the frame element 134 to form the frame element 134 . In particular, the sealing element 130 is formed in this way.

In the present case, frame element 134 encloses both an area which is arranged adjacent to feedthrough opening 112 and an area which is arranged adjacent to sensor opening 126 . Thus, the sensor element 118 and the cable 114 in one shared connection area 132 fixed to the wall component 102 and / or.

After the production of the frame element 134, the cable 114 is preferably routed through the lead-through opening 112 and/or the sensor element 118 is inserted into the further recessed area 116 of the wall component 102 and/or is positioned on the sensor opening 126.

The potting material is then preferably filled, for example poured, into the area surrounded and/or delimited by the frame element 134 . When the potting material dries and/or hardens, the sealing element 130 is preferably formed, as a result of which the cable 114 is fixed fluid-tight to the wall component 102 in the connection area 132 .

For example, about 0.8 g or more of potting material and/or about 1.2 g or less of potting material is used to form the sealing element 130 .

The potting material is, for example, a resin material, for example an epoxy resin material, a phenolic resin material, an aminoplast material, a polyurethane material, a silicone material, a polyester resin material, an ABS resin material or mixtures thereof.

Alternatively, it can be provided that the potting material comprises or is formed from a glass material.

The encapsulation allows the cable 114 and/or the sensor element 118 to be fixed in a pressure-tight manner, for example up to an internal pressure in the electrochemical cell 108 of approximately 10 bar. The sealing element 130 is preferably chemically stable and/or temperature-resistant due to the potting material. For example, the fastening device 128 is stable in a temperature range from approximately -20°C to approximately 80°C, in particular from approximately -30°C to approximately 100°C.

It can be provided that the casting material comprises one or more fillers. The one or more fillers are preferably selected from one or more of the following: inorganic fillers, in particular silicon oxide, carbonate, carbide, in particular silicon carbide, nitride, in particular metal nitride, metal oxide.

It can be advantageous if the material of the sealing element 130 has a hardness in a range from approx. 40 Shore D to approx. 100 Shore D.

A glass transition temperature of the potting material is around 90° C. or more, for example.

The sensor element 118 and the cable 114 are and/or are preferably completely cast and/or encapsulated. In particular, no potting material passes through the sensor opening 126 and/or blocks the sensor opening 126.

It can be favorable if the sensor element 118 and/or the cable 114 are fixed on and/or relative to the wall component 102 in a two-stage casting process.

For example, a fixation material in a flowable state is poured and/or filled into the connection area 132 . A quantity of the fixing material is selected in such a way that the cable 114 and the sensor element 118 are just fixed relative to the wall component 102 . Preferably, enough fixing material is used so that the cable 114 and an edge of the lead-through opening 112 are connected to one another just continuously via the fixing material.

For example, the fixing material is cast around the cable 114 all the way around the lead-through opening 112 .

For example, so much fixing material is used that the sensor element 118 and an edge of the sensor opening 126 are just continuously connected to one another via the fixing material.

For example, the sensor element 118 is cast around the sensor opening 126 with the fixing material.

The fixing material is then partially or completely dried and/or cured, in particular until it is no longer flowable.

After a partial or complete drying and/or curing of the fixing material, a casting filling material in a free-flowing state is preferably filled and/or poured into the connection area 132 until it is completely filled.

The casting filling material is in particular dried and/or cured.

In embodiments in which the fixing material has not yet been completely dried and/or cured before pouring and/or filling in the casting filling material, the fixing material is also completely dried and/or cured in the process. It can be advantageous if the fixing material and the casting filling material are chemically and/or physically identical.

Alternatively, it can be provided that the fixing material and the casting filling material are chemically and/or physically different from one another.

The fixing material and the casting filling material are preferably materials which are chemically and/or physically compatible with one another.

It can be advantageous if the fixing material and/or the casting filling material comprise or are formed from one of the materials described in connection with the casting material.

The fixation material and the potting filler material can each form parts of the potting material.

For a permanent connection between the cable 114 and the sealing element 130, it can be advantageous if the cable 114 includes a sheathing and/or coating. The casing and/or coating is preferably made from a polymer material which is chemically and/or physically compatible with the potting material.

The sheathing and/or coating preferably forms an adhesion promoter structure.

The potting material is preferably selected in such a way that a drop of water on a surface of the material encloses a contact angle with the surface of 90° or more. In this way, leakage of water and/or electrolyte can be reduced or avoided.

In particular for optimized chemical resistance, it can be advantageous if the sealing element 130 has a protective coating. the Protective coating preferably comprises an oxide or a parylene material or is formed from an oxide or a parylene material.

The material of the protective coating is and/or is applied to outer surfaces of the sealing element 130, for example.

In particular to improve adhesion of the sealing element 130 to the wall component 102, it can be advantageous if the wall component 102 has a partial or complete coating with an adhesion promoter.

Additionally or alternatively, the line 115 in the form of the cable 114 and/or the sensor element 118 can partially or completely have a coating with an adhesion promoter.

In particular, the adhesion promoter or adhesion promoters form adhesion promoter structures.

Additionally or alternatively, the wall component 102 can be cleaned before the casting material is poured in, for example by plasma cleaning and/or by cleaning with isopropanol.

Depending on the material of the line 115 and/or the sensor element 118, it can also be advantageous for these elements if they are cleaned before the casting material is poured in, for example by plasma cleaning and/or by cleaning with isopropanol.

In addition or as a supplement, the surface roughness of line 115 and/or insensitive areas of the sensor element in areas in which these are in contact with sealing element 130 can be and/or are made to improve adhesion. In particular, in order to form improved adhesion of the sealing element 130 to an outer surface of the wall component 102 in the connection area 132, it can be advantageous if the wall component 102 in the connection area 132 comprises one or more (additional) adhesion promoter structures (not shown).

One or more adhesion promoter structures are preferably formed by one or more indentations and/or corrugations and/or grooves in the wall component 102.

The one or more adhesion promoter structures are formed, for example, by laser treatment and/or by embossing of the wall component 102 .

For example, one or more, in particular regularly arranged, grooves and/or pocket-shaped indentations are introduced into the wall component 102 in an area which is in contact with the sealing element 130 .

In addition or as an alternative, it can be provided that embossed contours are and/or are introduced into the wall component 102 .

In addition or as an alternative, webs can be and/or be depressed subsequently, for example by embossing. For example, T-shaped depressions can be formed in this way.

In addition or as an alternative, provision can be made for the surface of the wall component 102 to be roughened in the connection area, for example by sandblasting.

In addition or as an alternative to being fixed in a casting process, the cable 114 and the wall component 112 can be and/or are welded to one another (not shown in detail). According to a further preferred embodiment, it can be provided that a sealing element 130 is and/or is formed by injecting an injection molding material into the connection area 132 (not shown in the drawing).

Alternatively or additionally, it can be provided that the cable 114 is and/or is fixed to the wall component 102 by heat caulking.

In addition or as an alternative, it can be provided that, in addition or as an alternative to the cable 114, a line 115 in the form of a signal conductor, for example a pin or a screw, is and/or is introduced into the casting material or is and/or is heat-staked (not shown). .

It can be provided that a screw or a rivet element is and/or is introduced into the casting material. Alternatively, the screw can also be and/or will be screwed into the casting material and optionally then be and/or will be cast again.

It can be provided that the feedthrough system 100 comprises further functional elements or forms part of further functional elements (not shown).

For example, the sealing element 130 forms or includes a bursting element. The bursting element comprises, for example, a weak point in the material, which breaks when a critical temperature and/or a critical pressure in the interior of the electrochemical cell 108 is exceeded, or is formed by such a point.

For example, a region of the sealing element 130 is made thinner, so that this region forms a weak point in the material. It can be provided that a bursting membrane is and/or is cast or welded into the casting material, which breaks and/or tears when a critical temperature and/or a critical pressure in the interior of the electrochemical cell 108 is exceeded.

In addition or as an alternative, it can be provided that the feedthrough system includes or forms a safety fuse, which preferably melts when a critical current is exceeded.

It can be advantageous if the cable 114 is destroyed or damaged when the bursting element breaks and/or the fuse is triggered, so that a current, for example an information current of the sensor device 120, is interrupted.

It can be favorable if an electrolyte filling opening is integrated into the feedthrough system 100 and, for example, the casting material is and/or is cast around the electrolyte filling opening.

In addition or as an alternative, it can be provided that the bushing system 100 forms part of a terminal bushing.

For example, both the cable 114 and a connecting conductor, which connects an electrochemical element in the form of a cell coil and a cell terminal, are and/or are cast and/or cast onto the wall component 102 (not shown) with the casting material.

Depending on how the cable 114 is attached to the wall member 102, different types of fit between the cable 114 and the wall member 102 may be preferred.

In particular when it is set by casting or by pressing (in

Described in connection with FIG. 14), it may be advantageous if a loose fit is formed between the wall component 102 and the cable 114 in the region of the lead-through opening 112 .

Fits are standardized in the ISO 286 standard, for example.

It can be favorable if a volume between edge regions of the wall component 102, which surround the lead-through opening 112, and the cable 114 is filled with the wall component 102 by the sealing element 130 or by a pressing process.

As an alternative to a loose fit, which is again shown separately in FIG. 11, it can be provided that a transition fit (cf. FIG. 12) or a press fit (cf. FIG. 13) is formed between the wall component 102 and the cable 114 .

The embodiment of the feedthrough system 100 described above as well as the embodiments of feedthrough systems 100 described below can be formed with each of the types of fitting illustrated in isolation in FIGS. 11 to 13.

The lead-through system 100 according to the embodiment shown in FIGS. 2 to 5 comprises a cable 114 which is led through exactly one lead-through opening 112 . A control and/or regulation device (not shown), which forms part of the sensor device 120 , is preferably arranged in the interior of the electrochemical cell 108 .

Alternatively, it can be provided that the feedthrough system 100 has a plurality of cables 114 . In embodiments in which the feedthrough system 100 has a plurality of cables 114 , the control and/or regulation device is preferably arranged outside the interior of the electrochemical cell 108 . According to a preferred embodiment, exactly one cable 114 is passed through a lead-through opening 112 in each case. This is shown schematically in FIG.

According to a further alternative, provision can be made for a plurality of cables 114 to be guided through a single feed-through opening 112 . This is shown schematically in FIG.

According to a further alternative, the cable 114 can be made in several parts and individual cable components are connected to one another by a connecting element. This is described in more detail in connection with the embodiment of a feedthrough system 100 shown in FIG.

A further embodiment of a feedthrough system 100 shown in FIG. 6 differs from the embodiment shown in FIGS.

In the present case, the frame element 134 has at least approximately a circular shape in a cross section taken perpendicularly to the main extension plane of the wall component 102 . This preferably applies equally to the frame element 134 according to the embodiment shown in FIGS.

In contrast to the embodiment shown in FIGS. 2 to 5, only the cable 114 (and not the sensor element 118) is fixed to the wall component 102 in the connection region 132 shown.

Otherwise, the further embodiment of a feedthrough system 100 shown in FIG. 6 essentially corresponds to the embodiment shown in FIGS. 2 to 5 in terms of structure and function, so that reference is made to their description in this respect. A further embodiment of a feedthrough system 100 shown in FIG. 7 differs from the embodiment shown in FIGS.

Sensor element 118 (not shown in FIG. 7) and cable 114 are preferably fixed to wall component 102 in spatially separated connection areas 132.

The sealing element 130 preferably terminates essentially flat with an outer surface of the wall component 102 .

Otherwise, the further embodiment of a feedthrough system 100 shown in FIG. 7 essentially corresponds to the embodiment shown in FIGS. 2 to 5 in terms of structure and function, so that reference is made to their description in this respect.

A further embodiment of a feedthrough system 100 shown in FIG. 8 differs essentially from the embodiment shown in FIGS. 2 to 5 in that no frame element 134 and no receiving recess 136 are provided, but the sealing element 130 is provided by pouring the potting material into the connection area 132 is formed without further spatial limitation.

In the present case, the sealing element 130 forms, for example, at least approximately a spherical shape or an ellipsoidal shape.

Otherwise, the further embodiment of a feedthrough system 100 shown in FIG. 8 essentially corresponds to the embodiment shown in FIGS. 2 to 5 in terms of structure and function, so that reference is made to their description in this respect. A further embodiment of a feedthrough system 100 shown in FIG. 14 differs from the embodiment shown in FIGS. 2 to 5 in terms of structure and function essentially in that the cable 114 and the wall component 102 are connected to one another by pressing.

For example, the wall component 102 is and/or is being reshaped at the edge regions which surround the lead-through opening 112, for example by flanging.

A casting process and/or an injection molding process and/or hot caulking are in particular unnecessary when fixing by pressing.

Otherwise, the further embodiment of a feedthrough system 100 shown in FIG. 14 essentially corresponds to the embodiment shown in FIGS. 2 to 5 in terms of structure and function, so that reference is made to their description in this respect.

A further embodiment of a feedthrough system 100 shown in FIG. 15 differs from the embodiment shown in FIG.

In the present case, the fastening device 128 comprises an insert element 140. The insert element 140 is preferably made of a casting material which, for example, comprises or is formed from a glass material or aluminum.

The insert element 140 preferably surrounds the cable 114 with respect to a central axis 138 of the cable 114 in the radial direction. For example, the insert element 140 shrinks in the direction of the cable 114 so that this is and/or is being compressed by the insert element 140 . The shrinkage is indicated schematically in FIG. 15 with arrows.

According to an alternative embodiment, it can be provided that the wall component 102 itself shrinks in the area of the lead-through opening 112, so that the cable 114 is and/or is compressed directly by the wall component 102 (not shown).

Otherwise, the further embodiment of a feedthrough system 100 shown in FIG. 15 essentially corresponds to the embodiment shown in FIG. 14 in terms of structure and function, so that reference is made to the description thereof.

A further embodiment of a feedthrough system 100 shown in FIG. 16 differs from the embodiment shown in FIG the wall component 102 and the cable 114 is arranged.

The support element 142 preferably serves to support and/or position the cable 114 in the lead-through opening 112.

It can be advantageous if the support element 142 is made of an electrically insulating material.

"Electrically insulating" preferably means that the respective materials and/or elements have an electrical conductivity of less than 10 ^-8 S/m at 25°C.

In embodiments in which the support member 142 is made of an electrically insulating material, the support member 142 is particularly useful an electrical insulation of the cable 114 relative to the wall component 102 and/or the interior of the electrochemical cell 108.

Additional elements for insulation are thus preferably unnecessary.

For example, the support element 142 forms a frictional connection with the cable 114 and/or the wall component 102.

Supporting elements 142 are particularly advantageous in embodiments in which the cable 114 is at least approximately round in a cross section taken parallel to the main plane of extent of the wall component 102 and/or a transition fit is formed between the wall component 102 and the cable 114.

It can be advantageous if the support element 142 comprises or is formed from a polymer material.

For example, the support element 142 is an injection molded component or a cast element.

For example, the support element 142 is at least approximately in the form of a hollow cylinder.

In addition or as an alternative to one or more separate support elements 142, it can be provided that the wall component 102 has one or more elevations in a direction running perpendicular to the main plane of extension of the wall component 102. The one or more elevations preferably each form a support element 142. This configuration of the support elements 142 can be advantageous in particular for a pressure sensor.

The one or more elevations preferably form a form fit with the cable 114. In addition or as an alternative to elevations, each of which forms a support element 142 , it can be provided that the wall component 102 includes one or more elevations 154 as part of a stabilization element 150 . This is described in connection with FIGS. 25 to 28.

It can be provided that, in addition or as an alternative to the cable 114, a rivet element is and/or is inserted together with a support element 142 (not shown) into the lead-through opening 112 or another opening. The support element 142 is and/or is pressed in a fluid-tight manner, in particular by a riveting process.

Otherwise, the further embodiment of a feedthrough system 100 shown in FIG. 16 essentially corresponds to the embodiment shown in FIG. 14 in terms of structure and function, so that reference is made to the description thereof.

A further embodiment of a feedthrough system 100 shown in FIG. 17 differs from the embodiment shown in FIG of a connecting element 144 are electrically conductively connected to one another.

The first cable component 114a forms a first line component 115a. The second cable component 114b forms a second line component 115b.

In embodiments in which the line 115 is a fluid line, the connecting element 114 fluidly connects the first line component 115a to the second line component 115b (not shown). All of the embodiments of a feedthrough system 100 described above or below with one-piece cables 114 can alternatively also be implemented with multi-piece cables 114a, 114b.

The first cable component 114a and the second cable component 114b preferably have the same main extension direction.

Otherwise, the further embodiment of a feedthrough system 100 shown in FIG. 17 essentially corresponds to the embodiment shown in FIG. 16 in terms of structure and function, so that reference is made to the description thereof.

A further embodiment of a feedthrough system 100 shown in FIG. 18 differs from the embodiment shown in FIG.

In the present case, both support elements 142 each have a hollow-cylindrical section 142a and a disk-shaped section 142b. In the present case, the disk-shaped section 142b is in each case arranged adjacent to the corresponding hollow-cylindrical section 142a and/or at a free end thereof.

In the present case, the support elements 142 are arranged in such a way that the disc-shaped sections 142b on opposite sides of the wall component 102 protrude beyond the wall component 102 in the axial direction with respect to the central axis 138 of the cable 114 .

In the present case, the hollow-cylindrical sections 142a are arranged within the lead-through opening 112 and/or accommodate the cable 114 . A relative position of the cable 114 to the wall component 102 can be secured and/or defined by the support elements 142 .

For example, the two support elements 142 and/or between the two support elements 142 form a form fit between the cable 114 and the support elements 142 .

Otherwise, the further embodiment of a feedthrough system 100 shown in FIG. 18 essentially corresponds to the embodiment shown in FIG. 16 in terms of structure and function, so that reference is made to the description thereof.

A further embodiment of a feedthrough system 100 shown in Fig. 19 differs from the embodiment shown in Fig. 17 in terms of structure and function essentially in that the fastening device 128 has two support elements 142, which are arranged one behind the other in the axial direction with respect to the central axis 138 of the cable 114 are arranged.

It can be advantageous if one of the support elements 142 has a hollow-cylindrical section 142a and an at least approximately disk-shaped section 142b.

A further support element 142, which differs therefrom, is preferably designed at least approximately in the shape of a disk overall.

Otherwise, the further embodiment of a feedthrough system 100 shown in FIG. 19 essentially corresponds to the embodiment shown in FIG. 17 in terms of structure and function, so that reference is made to the description thereof. A further embodiment of a feedthrough system 100 shown in FIG. 20 differs from the embodiment shown in FIG.

Relief element 146 is used in particular for strain relief and/or forms strain relief for cable 114.

The relief element 146 preferably comprises a hollow-cylindrical section 146a, which is arranged between the wall component 102 and the cable 114 in the radial direction with respect to the central axis 138 of the cable 114 .

The disk-shaped section 146b of the relief element 146 is arranged, for example, on a side of the wall component 102 facing the interior of the electrochemical cell 108 .

It can be provided that a further relief element 146 is provided, which is introduced and/or pushed into the lead-through opening 112 in particular from a side of the wall component 102 facing away from the interior of the electrochemical cell 108 (not shown in the drawing).

It can be provided that the relief element 146 is cast and/or injection molded onto the wall component 102 .

As an alternative or in addition, the cable 114 can be and/or be cast and/or injection-molded onto the relief element 146 .

Additionally or alternatively, the relief element 146 is fixed by clamping in the lead-through opening 112 and/or on the wall component 102 . The relief elements 146 preferably also form support elements 142.

Otherwise, the further embodiment of a feedthrough system 100 shown in FIG. 20 essentially corresponds to the embodiment shown in FIG. 18 in terms of design and function, so that reference is made to the description thereof.

A further embodiment of a lead-through system 100 that is not graphically shown as a whole in FIG. 21 differs in terms of structure and function from the embodiment shown in FIG Potting material is formed on an outside of the wall component 102 facing away from the interior of the electrochemical cell 108 .

With regard to the choice of material for the casting material, reference is made to the explanations in connection with the embodiment illustrated in FIGS. 2 to 5.

In the present case, the potting material is cast into a receiving recess 136 and/or the cable 114 is cast onto it.

For example, the cable 114 is pressed into the potting material and/or positioned therein before the potting material dries and/or hardens, so that the cable 114 is fixed relative to the wall component 102 after the potting material has dried and/or hardened.

In the present case, the receiving recess 136 is formed as a receiving recess 136 that is spatially different from the receiving recess 136 in the connecting area 132 .

Alternatively, it can be provided that the relief element 146 is formed as part of the connection area 132 (not shown). Otherwise, the further embodiment of a feedthrough system 100 shown in FIG. 21 essentially corresponds to the embodiment shown in FIG. 20 in terms of design and function, so that reference is made to the description thereof.

Another embodiment of a lead-through system 100 shown in FIG. 22, which is not shown in the drawing as a whole, differs in terms of structure and function from the embodiment shown in FIG Frame member 134 surrounding area is formed.

With regard to the choice of material for the frame element 134, reference is made to the description of the frame element 134 which surrounds the connecting region 132.

Here, the frame member 134 forming part of the stress relief member 146 is formed as separate from the frame member 134 forming part of the fastener 128 .

Alternatively, it can be provided that the frame elements 134 are identical and the relief element 146 forms part of the connection area 132 .

Otherwise, the further embodiment of a feedthrough system 100 shown in FIG. 22 essentially corresponds to the embodiment shown in FIG. 21 in terms of structure and function, so that reference is made to the description thereof.

A further embodiment of a lead-through system 100, which is not shown graphically as a whole in FIG. 23, differs in terms of structure and function essentially differs from the embodiment shown in Fig. 21 in that relief element 146 is a separate component which at least partially surrounds cable 114 on an outside of wall component 102 facing away from the interior of electrochemical cell 108 and/or with a positive fit and/or fixed in a non-positive manner to the wall component 102 .

It can be advantageous if the free end of the relief element 146 is fixed to the wall component in a materially bonded manner, for example by gluing and/or welding.

According to a further embodiment, it can be provided that the load-relieving element 146 is formed by a sealing bead, which runs across the cable 114 transversely to a main extension direction of the cable 114 . A wet-chemical fixation of the cable 114 can thus take place. The relief element 146 is preferably fixed on both sides next to the cable 114 on the wall component 102 (not shown).

To produce the load-relieving element 146, for example, the sealing bead is pressed against the cable in the not yet dried state, or the cable 114 is pressed against the sealing bead.

Otherwise, the further embodiment of a feedthrough system shown in FIG. 23 essentially corresponds to the embodiment shown in FIG. 21 in terms of structure and function, so that reference is made to the description thereof.

A further embodiment of a lead-through system 100, which is not shown graphically as a whole in Fig. 24, differs in terms of structure and function from the embodiment shown in Fig. 23 essentially in that the relief element is fixed in a non-positive and/or positive manner, for example in a clip connection, on the wall component . Otherwise, the further embodiment of a feedthrough system 100 shown in FIG. 24 essentially corresponds to the embodiment shown in FIG. 23 in terms of structure and function, so that reference is made to the description thereof.

The relief elements 146 described in connection with FIGS. 21 to 24 can be used in combination with any of the previously described embodiments.

A further embodiment of a feedthrough system 100 shown in FIG. 25 differs from the embodiment shown in FIGS.

As an alternative to the wall component 102 having a single stabilization element 150, it can be provided that the wall component 102 has a plurality of stabilization elements 150 (not shown).

The stabilization element 150 is preferably used to stiffen the recessed area 116 and/or to optimize the adhesion of a potting material to the wall component 102.

For example, the stabilization element 150 forms the recessed area 116.

In the present case, both the lead-through opening 112 through which the cable 114 is routed and the sensor opening 126 for connecting the sensor element 118 to an interior of the electrochemical cell 100 are surrounded by a common recessed area 116 .

The recessed area 116 is present in a cross section taken parallel to the main extension plane of the wall component 102 at least approximately rectangular, for example at least approximately square.

The stabilization element 150 preferably comprises or is formed from a metallic material, for example aluminum.

In the present case, the stabilization element 150 is formed in one piece with a base body of the wall component 102, for example made from the same piece of sheet metal.

Alternatively, it can be provided that the stabilization element 150 is and/or is manufactured separately from the base body of the wall component 102 . The stabilization element 150 is and/or will be connected to the base body of the wall component 102 in particular in a form-fitting and/or force-fitting and/or material-to-material manner.

In the present case, the stabilization element 150 has a plurality of indentations in the form of post-processed areas 152, which are formed, for example, by embossing and/or milling.

In the present case, several elevations 154 extend between the post-processed areas 152.

An average thickness of the stabilization element 150 in the area of the elevations 154 preferably essentially corresponds approximately to an average thickness of the wall component 102 outside of the recessed area 116 of the wall component 102.

It can be favorable if the thickness of the stabilization element 150 in the area of the reworked areas 152 is approximately 80% or less, in particular approximately 60% or less, for example approximately 40% or less, of an average thickness of the wall component 102 outside the recessed area is 116. The thickness of the stabilization element 150 in the area of the reworked areas 152 is preferably approximately 1% or more, in particular approximately 2% or more, for example approximately 5% or more, of the average thickness of the wall component 102 outside of the recessed area 116.

The elevations 154 are preferably completely surrounded by the reworked areas 152 in directions running parallel to the main extension plane of the wall component 102 .

It can be favorable if the elevations 154 are at least approximately triangular in cross-section taken parallel to the main extension plane of the wall component 102 .

For example, the elevations 154 form stiffening areas, which are surrounded by potting material in a mounted state.

The stabilization element 150 as a whole preferably forms a receptacle and/or a basin for the casting material.

It can be advantageous if at least some of the post-processed areas 152 are web-shaped. For example, a plurality of post-processed areas 152 extend along radial directions with respect to a central axis of stabilization element 150.

In addition or as an alternative to web-shaped, post-processed areas 152, it can be provided that the lead-through opening 112 and/or the sensor opening 126 are surrounded by, for example, basin-shaped bulges 156. In the present case, the bulges 156 are post-processed areas 152. For example, the bulges 156 are formed by arched and/or curved walls of the elevations 154 surrounding the respective bulge 156 .

In the present case, the elevations 154 and the post-processed areas 152 form potting material guide channels, which in particular serve to uniformly distribute the potting material during the filling of a free-flowing potting material compound.

Deformation of the wall component 102 when filling the connection area with casting material can preferably be avoided or minimized by the stabilization element 150 .

Otherwise, the further embodiment of a feedthrough system 100 shown in FIG. 25 essentially corresponds to the embodiment shown in FIGS. 2 to 5 in terms of structure and function, so that reference is made to their description in this respect.

In Figures 26 and 27, an electrochemical cell 108 of an electrochemical system 110 is shown. In the present case, the electrochemical cell 108 comprises a housing 106 which comprises a first housing component in the form of a cup-shaped housing element and a second housing component in the form of a cover element 104 .

In the present case, the electrochemical cell 108 comprises a feedthrough system 100.

The feedthrough system 100 differs from the embodiment shown in FIG. 25 in terms of structure and function essentially in that the wall component 102 is at least approximately rectangular in a cross section taken perpendicular to the main plane of extension. In the present case, wall component 102 is formed by cover element 108 .

In the present case, the stabilization element 150 is arranged between a cell terminal 158 and a bursting element 160 (schematically indicated), for example a predetermined breaking point, of the electrochemical cell 108 .

As can be seen in particular in FIG. 27 , an insulation element 162 is preferably arranged on a side of the cover element 104 facing an interior of the electrochemical cell 108 .

Otherwise, the embodiment of a feedthrough system shown in FIGS. 26 and 27 essentially corresponds to the embodiment shown in FIG. 25 in terms of structure and function, so that reference is made to the description thereof.

According to a particularly preferred embodiment, the feedthrough system 100 comprises a single line 115 which forms a loose fit with the wall component 102 . One or more adhesion promoter structures are preferably arranged and/or formed on the wall component 102, as a result of which the casting material, which is and/or is cast into the connection region 132, has optimized adhesion. The potting material preferably fills a volume formed by the loose fit in the feedthrough opening 112.

The wall component 102 preferably forms the entire cover element 104 of the electrochemical cell 108.

According to a further particularly preferred embodiment, the feedthrough system comprises a single line 115 which forms a loose fit with the wall component 102 . A volume formed by the loose fit in the area of the feed-through opening 112 is preferably filled by one or more support elements 142, which preferably through pressing are specified. For example, the one or more support elements 142 are clamped in the wall component 102 and/or the respective line 115 in the one or more support elements 142 .

The one or more support elements 142 preferably form one or more relief elements 146.

The described embodiments of the feedthrough system 100 can preferably be used to form pressure-tight, temperature-stable and/or chemically resistant feedthroughs for the one or more lines 115 through the respective wall component 102 .

Diffusion of fluid through the sealing element 130 is preferably inhibited.

Claims

Claims Feedthrough system (100) for an electrochemical system (110), the feedthrough system (100) comprising: a wall component (102) having one or more feedthrough openings (112); one or more conduits (115) passed through the one or more feedthrough openings (112); and a fastening device (128) which connects the one or more lines (115) to the wall component (102) in one or more connection areas (132) of the feedthrough system (100). Feedthrough system (100) according to claim 1, characterized in that the fastening device (128) comprises one or more sealing elements (130) which the one or one or more of the lines (115) in one or more of the connection areas (132), in particular radially Surrounded, wherein in particular the one and / or the plurality of sealing elements (130) by pouring a casting material in the respective connection area (132) or by injecting an injection molding material in the respective connection area (132) are formed. Feedthrough system (100) according to Claim 2, characterized in that the wall component (102) has one or more receiving depressions (136) which receive the casting material or the injection molding material, and/or that the fastening device (128) has one or more, in particular ring-shaped, Frame elements (134) which are completely or partially filled with the casting material and/or surround and/or delimit the respective connection area (132). Feedthrough system (100) according to claim 2 or 3, characterized in that the potting material comprises or is formed from a glass material or a polymeric material, wherein preferably the polymeric material is selected from one or more of the following materials: an epoxy resin material; a phenolic resin material; an aminoplast material; a polyurethane material; a silicone material; a polyester resin material; and an ABS resin material. Feedthrough system (100) according to one of Claims 2 to 4, characterized in that the potting material comprises one or more fillers, the one or more fillers preferably being one or more inorganic fillers, in particular silicon oxide, carbonate, carbide, for example silicon carbide, nitride , for example metal nitride, metal oxide. Feedthrough system (100) according to one of Claims 2 to 5, characterized in that a material is selected for the one or more sealing elements (130) which is designed in such a way that a drop of water on a surface of the material with the surface of the material Includes contact angle of greater than 90 °. Feedthrough system (100) according to one of Claims 1 to 6, characterized in that the one or more of the lines (115) have one or more adhesion promoter structures, for example a sheathing and/or coating, with the respective adhesion promoter structure in particular comprising a polymer material or formed therefrom which is chemically and/or physically compatible with a material of the fastener (128). Feedthrough system (100) according to one of Claims 1 to 7, characterized in that the feedthrough system (100) comprises one or more adhesion promoter structures which are arranged on a base body of the wall component (102) or are formed by the wall component (102), in particular the one or more adhesion promoter structures are formed by a surface treatment of the wall component (102) or a coating on the base body of the wall component (102). Feedthrough system (100) according to one of Claims 1 to 8, characterized in that the fastening device (128) has a protective coating, the protective coating preferably being arranged on an outer surface of the fastening device (128) and in particular an oxide, for example aluminum oxide, or a Includes or formed from parylene material. Feedthrough system (100) according to one of Claims 1 to 9, characterized in that the one or one or more of the lines (115) are mechanically pressed together and/or pressed in one or more of the connection areas (132), in particular by reshaping the wall component ( 102) or by shrinkage on the wall component (102) or by shrinkage on one or more insert elements (140) of the fastening device (128). Feedthrough system (100) according to one of Claims 1 to 10, characterized in that the one or more of the lines (115) are in several parts, with a first line component (115a) being connected by means of a connecting element (144) to a second line component (115b ) is connected electrically and/or fluidically, in particular the connecting element (144) being received by the fastening device (128), for example embedded in a potting material. Feedthrough system (100) according to one of Claims 1 to 11, characterized in that the wall component (102) comprises one or more stabilization elements (150) in which the one or more of the feedthrough openings (112) are arranged, the one or the plurality of stabilization elements (150) each have one or more elevations (154) which extend away from a base body of the respective stabilization element (150), in particular between one or more post-processed regions (152) of the respective stabilization element (150). Feedthrough system (100) according to Claim 12, characterized in that the one or more post-processed areas (152) are web-shaped and/or are formed by an embossing process or a milling process. Feedthrough system (100) according to one of Claims 1 to 13, characterized in that the fastening device (128) comprises one or more support elements (142) for supporting and/or positioning the one or one or more lines (115), with preferably the one or more support elements (142) are disk-shaped and/or sleeve-shaped. Feedthrough system (100) according to one of Claims 1 to 14, characterized in that the fastening device (128) comprises one or more stress-relieving elements (146), by means of which the one or one or more of the lines (115) can be fixed on one side of the wall component (102 ), for example on an outer side facing away from an interior of a housing (106), are firmly bonded, for example by casting, and/or positively and/or non-positively, for example by forming a relief element (146) as a clamp or sealing bead. Method for producing a feedthrough system (100), in particular a feedthrough system (100) according to one of Claims 1 to 15, the method comprising the following:

providing a wall component (102) which has one or more feedthrough openings (112);

passing one or more leads (115) through the one or more feedthrough openings (112); and fixing the one or more lines (115) to the wall component (102) in one or more connection areas (132) by means of a fastening device (128). Method according to Claim 16, characterized in that the one or more lines (115) are fixed with a fixing material relative to the wall component (102) and/or in the one or more feed-through openings (112) and that subsequently, in particular after the Fixing material has been partially or fully cured, a potting filler material is poured into the one or more connecting areas (132). Electrochemical cell (108), comprising one or more implementation systems (100) according to any one of claims 1 to 15, wherein in particular a wall component (102) of at least one of the one or more implementation systems (100) is part of a housing (106) of the electrochemical cell (108) surrounding an interior of the electrochemical cell (108). Electrochemical cell (108) according to Claim 18, characterized in that the one or more of the feedthrough systems (100) form part of a terminal feedthrough in the area in which a connecting conductor of the electrochemical cell (108) is attached to a cover element (104) of the electrochemical cell (108) is fixed. Electrochemical cell (108) according to Claim 18 or 19, characterized in that the one or more of the implementation systems (100) comprise or form a bursting element which is arranged and/or designed in such a way that it bursts when a critical pressure is exceeded and / or a critical temperature in the interior of the electrochemical cell (108) breaks and / or that one or more of the implementation systems (100) include or form a fuse. Electrochemical cell (108) according to one of Claims 18 to 20, characterized in that the one or more of the feedthrough systems (100) comprise an electrolyte filling opening for filling and/or removing electrolyte from the interior of the electrochemical cell (108) or form. An electrochemical system (110) comprising one or more electrochemical cells (108) according to any one of claims 18 to 21.