DE102018211223A1 - Assembly for a motor vehicle - Google Patents

Abstract

The technology disclosed here relates to an assembly for a motor vehicle. The assembly comprises i) at least one equipment container 100 for storing equipment which is liquid under ambient conditions; and ii) at least one energy storage device 200 for storing electrical energy.

Description

The technology disclosed here relates to a motor vehicle with an operating material container and a high-voltage battery. Motor vehicles with an operating fluid container and a high-voltage battery as such are known.

High-voltage storage systems and fuel supply systems are used, for example, in electrified or hybridized motor vehicles (eg mild hybrid, plug-in hybrid (PHEV), hybrid, BEV with REX, FCEV, etc.). A high-voltage storage system and a fuel supply system have numerous other components in addition to the storage cells and the operating material container. By locating all the components of the high-voltage storage system and the fuel supply system in a space that is relevant to customer benefit (eg passenger compartment, trunk), this is decimated. All of these components have their own housings and are mounted separately on the motor vehicle. The fact that the components can be guaranteed can lead to suboptimal component shapes.
The connection of the individual components can have a negative impact on the cable lengths and on the cabling effort, especially for components that are difficult to access. Unprotected cables along the sub-floor could be damaged on bad roads.

Several assembly aids may be required during assembly. The assembly scope in these installation spaces is usually done. clocked according to a complex assembly sequence. If several assembly steps have to be carried out one after the other in construction spaces that are difficult to access, this can lead to increased expenditure of time, in particular if components and subcomponents have to be installed both in the underfloor, in the wheel arches and in other construction spaces of the vehicle.

For cooling high-voltage storage systems, usually fluid cooling is used, which is connected to a conventional cooling circuit. Equipment containers are not cooled. Elevated and / or inhomogeneous temperatures can lead to an increased gas accumulation and thus to an increase in pressure in the fuel tank and / or to a higher purge air requirement for purging the activated carbon filter.

Separate components can therefore have disadvantages in terms of weight, installation space, body rigidity, assembly or component costs and / or ease of maintenance. The arrangement of the high-voltage battery in the trunk also leads to an increased overall center of gravity of the vehicle, which can result in disadvantages in terms of driving dynamics.

It is a preferred object of the technology disclosed herein to reduce or remedy at least one disadvantage of a known solution or to propose an alternative solution. It is in particular a preferred object of the technology disclosed here to improve the integration of an operating material container and an energy store, in particular with regard to space utilization, weight, manufacturing costs, assembly, body rigidity, robustness, safety and / or gas emissions. Further preferred tasks can result from the advantageous effects of the technology disclosed here. The object (s) is / are achieved by the subject matter of patent claim 1 and the further claims. The dependent claims represent preferred configurations.

The technology disclosed here relates to an assembly for a motor vehicle. The assembly includes at least one equipment container for storing equipment that is liquid under ambient conditions, in particular in a storage volume S , The assembly also includes at least one energy storage device for storing electrical energy.

An assembly is a group of components that work together to serve a common purpose. The assembly preferably fulfills the purpose that the components of the assembly are preassembled on the body of the motor vehicle prior to their assembly and are then mounted on the body in one assembly step.

The technology disclosed here also includes a motor vehicle with the assembly disclosed here. It should be noted that the technology disclosed herein can be used with any type of vehicle that has an energy storage device and a resource container. The technology is preferably used in the following vehicle types: hybrid electric vehicles (HEVs from hybrid electric vehicles), plug-in hybrid electric vehicles (PHEVs from plug-in hybrid electric vehicles), battery electric vehicles (BEVs from battery electrical vehicles), and fuel cell vehicles (FCEVs).

A preferred resource is fuel. At the same time, it is conceivable that the technology disclosed here for storing other liquids (for example water or an aqueous solution) is used in a motor vehicle. Even if we are talking about an operating fluid container, operating fluid pump and the like, so to speak Terms fuel tank or fuel pump with be disclosed.

The technology disclosed here relates to a resource container that forms the storage volume for storing the resource. The equipment container thus forms the essentially fluid-tight outer shell from the storage volume and delimits the storage volume from the installation space. In the case of plastic containers, one speaks for example of the bladder.

The equipment container can be made at least partially from a metal, in particular from aluminum, an aluminum alloy, steel or a steel alloy. The metal can expediently be coated, for example with a resource-impermeable plastic layer. Alternatively or additionally, the metal can be anodized. Alternatively, the equipment container can be made of a plastic, in particular with a multilayer structure with an equipment-impermeable layer, such as a layer of an ethylene-vinyl alcohol copolymer (EVOH). The equipment container is expediently designed in such a way that the equipment container is permeation-tight against hydrocarbon emissions and / or is resistant to equipment contact.

The equipment container can have any suitable shape. In one embodiment, the equipment container is designed as a saddle container. A saddle container usually shows two container chambers and a connection area. The connection area connects the two container chambers of the saddle container. In another embodiment, the operating material container comprises a container chamber and a connection area which projects beyond a central tunnel and is connected to the storage housing disclosed here. In a further embodiment, the operating material container can have a single container chamber that widens towards the vehicle floor in the longitudinal direction of the vehicle (“shoe shape”). Such a container chamber can extend essentially over the entire width of the rear seats.

The equipment container can expediently be designed in several parts. For example, a lower shell and an upper shell can form the equipment container. In a three-part configuration, a lower shell, a middle part and a lid can form the operating material container. At the same time, the parts of the equipment container could also be composed differently. The equipment container or the storage housing can be produced, for example, by welding, die casting, blow molding, injection molding, etc. At least a part of the resource container is advantageously produced together with the storage housing. The equipment container can have an opening for service or assembly work.

The electrical energy storage device is a device for storing electrical energy in order to drive the at least one electrical (traction) drive machine. The energy storage device comprises at least one electrochemical energy storage cell. For example, the energy storage device can be a high-voltage storage device. The energy storage device can expediently be designed as a battery, in particular as a high-voltage battery. Alternatively or in addition, supercapacitors (Supercaps or SC) can also serve as an energy storage device. Such energy storage devices are usually integrated into an electrical system.

The energy storage device comprises at least one storage housing. The storage case has an interior I on. The storage housing is expediently an enclosure which surrounds the components of the energy storage device. The storage housing is expediently designed to be gas-tight, so that any gases escaping from the storage cells are collected. The storage housing is advantageously set up to prevent the penetration of moisture into the energy storage device. The housing can also advantageously be used for fire protection, contact protection and / or intrusion protection. The storage housing is preferably provided in the installed position such that the storage housing is accessible from the underside of the motor vehicle or from the road surface in the normal position of the motor vehicle. For example, the storage housing can be accessed from the vehicle underbody after opening the housing cover.

The storage housing can be made at least partially from a metal, in particular from aluminum, an aluminum alloy, steel or a steel alloy. Alternatively, the storage housing can be formed from a plastic, in particular a fiber composite material.

At least one or more of the following components can be accommodated in the at least one storage housing of the energy storage device: storage cells, power electronics components, activated carbon filter, external fuel filter, contactor (s) for interrupting the power supply to the motor vehicle, cooling elements, electrical conductors, control unit (s), Media line (s) for the equipment container, water container for water injection, low-voltage battery (s), fuel or purge air lines. The energy storage device can in particular have elements to be cooled, in particular storage cells and / or components of the Power electronics of the energy storage device. The components are expediently preassembled in the motor vehicle before the assembly is assembled.

The memory housing disclosed here can in particular have at least one housing longitudinal member. The longitudinal housing member can be formed in one piece with a storage housing wall from the storage housing. The longitudinal housing member can for example be integrally formed with the storage housing wall. The housing longitudinal member can expediently be a hollow member.

A honeycomb structure can particularly preferably be provided in the longitudinal housing support, in particular for the absorption of kinetic energy by deformation. The housing longitudinal member can particularly preferably be attached to the outer outer side wall of the storage housing. The outer outside of the storage housing is the side which, in the installed position of the assembly in the motor vehicle, is arranged immediately adjacent to an outer floor side member.

The equipment container and the at least one storage housing can be arranged in any suitable position relative to one another and can have any suitable shape.

The equipment container is preferably arranged at least partially under the rear seats. The equipment container is preferably arranged between the heel plate and the rear axle.

Furthermore, the storage housing can preferably be provided at least partially and preferably completely in the underfloor region of the motor vehicle. The at least one storage housing can be provided at least partially (seen in the vehicle transverse direction Y) between the center tunnel and the outer floor side members of the body. Advantageously, two storage housings can be provided, one storage housing being arranged in each space between the center tunnel and the outer floor longitudinal member. If the motor vehicle does not have a center tunnel, in an advantageous embodiment a storage housing can be provided, which essentially extends from a first floor rail to the second floor rail. According to the technology disclosed here, the term “between the center tunnel and the outer floor side members” also includes configurations which are arranged somewhat above or below the center tunnel or the outer floor side members in the direction of the vehicle vertical axis Z, provided that the at least one storage housing, viewed in the vehicle transverse direction Y, is arranged between these components is.

In the installed position, the operating material container is particularly preferably arranged at least partially and preferably completely above the energy storage device. In other words, the tank is further away from the road surface in the installed position than the energy storage device. The storage housing can be arranged below the equipment container or can protrude into the equipment container in the lower region of the equipment container. A particularly favorable center of gravity can thus be set.

The operating material container, in particular one or both of the container chambers, is preferably designed to bear directly or indirectly on the storage housing. In particular, the operating material container and the energy storage device can be in direct contact with one another in a contact area or can be spaced apart by at least one functional element of the assembly, in particular by the cooling element of the cooling device disclosed here. A particularly space-saving construction which is advantageous with regard to the temperature of the fuel can thus advantageously be achieved. At least one insulation and / or fire protection element can preferably be provided between the energy storage device (in particular its cells) and the operating material container. For example, a double wall structure with intermediate insulation can be provided as a common housing wall section. In the event of a thermal event of the cells, such elements can advantageously reduce the heat input into the operating material container.

The at least one storage housing and the operating material container can form a common housing. For example, the equipment container can be attached to at least one storage housing, in particular materially, positively and / or by means of fasteners such as screws, rivets, etc. The storage volume of the equipment container can be separated from the (respective) storage housing in an operating-tight manner with respect to the interior. I.d.R. the equipment container is not detachably attached to the at least one storage housing. At least one opening for service or. Assembly work may be provided. For example, the equipment container can be configured in several parts, wherein the lower shell can have the common housing section disclosed here.

In particular, it can be provided that the energy storage device, in particular the common housing wall section disclosed here, is designed in such a way that equipment containers with different contours and / or different storage volumes can be attached. In other words, it can be provided that, depending on the vehicle variant, the at least one Storage housing is formed as the same part, to which different operating fluid containers (in particular adapted to the respective installation situation of the vehicle variant) can be attached. Such a configuration reduces the variance and represents an improved solution in terms of installation space requirement and weight.

The operating material container is particularly preferably a saddle container, each of the container chambers being fastened to a storage housing.

In a particularly preferred embodiment of the technology disclosed here, the at least one storage housing can be set up to be attached to the body of the motor vehicle in the installation position, and the equipment container can also be set up to be attached to the body only via the storage housing. The at least one storage housing and the operating material container are thus preferably fastened together to the body, for example by the at least one storage housing being attachable to at least one lower floor side member or side sill and / or to at least one lower floor cross member. The storage housing can particularly preferably comprise the at least one housing longitudinal member disclosed here, on which body connection points are provided. In another embodiment it can be provided that the storage housing can be fastened to a body cross member below the rear seats.

In other words, according to such a configuration, the operating material container can be designed to be self-supporting. In other words, in the installed position, the equipment container cannot be connected or connected directly to the body connection points of the body in a form-fitting or material-locking manner. The equipment container therefore expediently does not have any load-bearing body connection points which are necessary to absorb the forces and moments resulting from the dead weight of the equipment center container and equipment. Rather, the equipment container can carry these loads itself. Such a configuration enables a particularly space-saving integration of the storage housing and the operating material container in the motor vehicle.

In a particularly preferred embodiment, the equipment container is set up to transmit forces and / or moments from a first storage housing to a second storage housing. For this purpose, the operating material container can have at least one stiffening element, which preferably begins at the first storage housing and ends at the second storage housing. The overall rigidity of the vehicle body can thus advantageously be improved

The equipment container and the energy storage device can have at least one common housing wall section. The common housing section can store the equipment in the equipment container from the interior I disconnect the energy storage device in a fluid-tight manner. The common housing wall section can be the only fluid-tight partition between the interior I and the equipment container.

• i) von einer Außenwand des Betriebsmittelbehälters, insbesondere an der Unterschale, ausgebildet werden, an der mindestens ein Speichergehäuse mit einer mit dem gemeinsamen Gehäusewandabschnitt korrespondierenden Aussparung anzubringen ist; oder
• ii) von einer Außenwand von mindestens einem Speichergehäuse ausgebildet wird, an der der Betriebsmittelbehälter (100) mit einer korrespondierenden Aussparung anzubringen ist;

According to the technology disclosed here, the energy storage device or the operating material container can be designed such that, before the assembly of the assembly, the housing wall section is only provided on the energy storage device or on the operating medium container. In particular, the common housing wall section can be assembled before the assembly

• i) are formed by an outer wall of the equipment container, in particular on the lower shell, on which at least one storage housing with a recess corresponding to the common housing wall section is to be provided; or
• ii) is formed by an outer wall of at least one storage housing on which the operating material container ( 100 ) is to be made with a corresponding recess;

In other words, the technology disclosed here provides in one embodiment that instead of two housing wall sections of operating medium container and storage housing resting against one another, only one partition is provided, which separates the operating medium from the interior I separates.

The assembly disclosed here can have at least one cooling device with at least one cooling element for jointly cooling the operating medium container and the energy storage device. For this purpose, the operating material container and the energy storage device are expediently in direct contact with one another or are spaced apart from one another by the at least one cooling element of the cooling device. In particular, the at least one cooling element can be provided in the plant area or directly adjacent to the plant area. The cooling element can particularly preferably be provided on the common housing wall section disclosed here. In this context, the term “adjacent to the contact area or housing wall section” means that the at least one cooling element is heat-conducting with the contact area or Housing wall section is connected without the cooling effect being impaired (for example losses on the transport route less than 20% or less than 10%).

The cooling element is particularly preferably provided as a cooling channel through which coolant flows, in or on a housing wall of the storage housing. Such a cooling channel structure can be geometrically integrated and manufactured comparatively easily. Such a cooling channel structure can moreover be adapted well to the outer contour of the equipment container. It is therefore particularly preferred to provide only one cooling device for the operating material container and energy storage device.

The cooling channel can particularly preferably extend over the entire length of the storage housing.

The at least one cooling element can have two opposite sides, a first side of the two sides being set up to cool the operating medium and a second side of the two sides being set up to cool elements of the energy storage device to be cooled.

The assembly can have at least one cooling fin and preferably a plurality of cooling fins, particularly preferably in the common housing section, which is / are connected to at least one cooling element in a heat-conducting manner. The at least one cooling fin can be in the interior I the energy storage device and / or in the storage volume S of the equipment container protrude. Alternatively or additionally, the at least one cooling element itself can be placed in the interior I the energy storage device and / or in the storage volume S of the equipment container protrude. The equipment container expediently does not comprise any separate cooling devices, but is only tempered by the common cooling device. The at least one cooling element is expediently provided in the installed position above the elements of the energy storage device to be cooled. Better cooling can thus be achieved. In particular, the elements to be cooled can be arranged in the anal area or in the common housing section.

• i) als die Zellentlüftung (sofern vorgesehen); und/oder
• ii) als der Befestigungsabschnitt zur direkten oder indirekten Befestigung der Speicherzelle, insbesondere an das Speichergehäuse der Energiespeichereinrichtung.

The disclosed technology relates in particular to a storage cell for storing electrical energy, in particular for the energy storage device disclosed here. The storage cell comprises electrical connections and can usually comprise at least one cell ventilation. In the installed position of the memory cell in the motor vehicle, the electrical connections can be arranged lower

• i) as the cell ventilation (if provided); and or
• ii) as the fastening section for the direct or indirect fastening of the storage cell, in particular to the storage housing of the energy storage device.

The technology disclosed here includes, in particular, an assembly with at least one such memory cell, preferably the assembly disclosed here, an equipment container not having to be provided. As a rule, a multiplicity of storage cells are provided in the at least one storage housing of the energy storage device. The memory cells are thus conveniently attached to the memory housing. The memory cells are preferably combined to form several modules and the respective modules or groups can be removed individually. A group or a module is a number of memory cells that have already been connected to each other (e.g. clamped together) before assembly, the number of memory cells being less than the total number of memory cells. The assembly particularly preferably comprises a memory housing with memory cells that can be removed from the memory housing individually or in several groups in the installed position, without the whole of the memory cells or the groups having to be removed (i.e. removed from their installed position). For example, the individual storage cells can be designed to be attached or detachable one by one from the installed storage housing. For example, the storage cells can be fastened or mounted by means of a screw connection and / or snap connection. A fastening rail can advantageously be provided on the upper part of the memory housing, to which the plurality of memory cells are detachably fastened.

A housing cover can also advantageously be provided in the storage housing base. In other words, the storage case is also installed upside down in the installed position, so that the interior I the storage case is accessible from the vehicle underbody after opening the case cover.

The individual memory cells are therefore advantageously more accessible for any service work or maintenance work. If a memory cell is defective or degraded, this memory cell can be replaced individually without having to dismantle all other memory cells at the same time. Furthermore, the electrical connections of the memory cells are more accessible for possible control measurements.

A cooling element of the energy storage device above the is particularly preferred Storage cell provided. The cooling element is particularly preferably connected in a heat-conducting manner to at least one end face of the storage cell, expediently the end face arranged at the top in the installed position.

In the storage housing of the storage device can have at least one media line which is fluid-connected or fluid-connectable to the operating fluid container and which is at least partially accommodated in the storage housing.

A media line can be a resource line that is provided for the transportation of resources. For example, a media line can be a fuel line, water line or a fuel line. Furthermore, a media line of the operating material container can be a purge air line, which for example supplies purge air to the activated carbon filter. However, the exhaust system of an internal combustion engine is not to be regarded as the media line of the equipment container.

The media line can particularly preferably be at least partially accommodated in the at least one longitudinal housing carrier disclosed here. The media line can particularly preferably move at least 50 percent or at least 70 percent from its media line cross section into the internal volume V of the housing side member protrude. In a particularly preferred embodiment, the at least one media line is completely accommodated in a longitudinal beam designed as a hollow profile.

Furthermore, the housing longitudinal member can expediently be designed such that the at least one media line can be inserted into the housing longitudinal member. This facilitates the assembly or disassembly of the at least one media line.

• i) im Gehäusedeckel,
• ii) an der inneren Außenseitenwand; und/oder
• iii) an der äußeren Außenseitenwand.

Alternatively or in addition, the at least one media line can be at least partially accommodated in a storage housing wall. The storage housing wall at least partially accommodating the media line can be provided, for example

• i) in the housing cover,
• ii) on the inner outside wall; and or
• iii) on the outer outside wall.

The at least one media line can be fastened to the storage housing by means of suitable fastening means.

In a preferred embodiment, the storage housing wall and / or the longitudinal housing member has at least one section with a C-shaped or U-shaped cross section, in which the at least one media line is received or can be received. The at least one media line can thus advantageously be fastened by simple means. An open contour can thus be provided, the contour opening being used for mounting the media line. For example, such a section with a C-shaped or U-shaped cross section can be produced by stamping, roll forming, extrusion, etc.

The media line can advantageously be fastened to the storage housing by means of a clip connection.

The storage housing can expediently have an elastomer bearing, wherein the media line can be accommodated in the elastomer bearing. The elastomer bearing can advantageously be arranged in a C-shaped or U-shaped cross section or in the clip. Such an elastomer bearing generally simplifies assembly. The elastomer bearing jams in the installed position and thus builds up the holding forces. At the same time, the elastomer bearing can be elastically deformed during assembly.

The inner outer side wall of the storage housing is arranged closer to the longitudinal axis of the vehicle running through the center of the vehicle than the outer outer side wall. In other words, the outer outer side wall is arranged closer to the side sills than the inner outer side wall. Depending on the vehicle configuration, it may be advantageous to arrange the media line on the inner outer side wall or on the outer outer side wall of the storage housing. For example, in the case of a media line on an inner outer side wall, the likelihood of mechanical deformation may be lower, whereas the thermal effects of an exhaust system on the fuel to be transported could be greater here. In return, the likelihood of mechanical deformation may be greater in the case of a media line on an outer outer side wall, whereas the thermal effects of the exhaust system on the fuel to be transported are generally lower here.

The longitudinal housing member can advantageously be attached to the outer outside wall of the storage housing. The outer outer side wall is spaced from the center tunnel or from the exhaust system. A heat input caused by the exhaust system into the fuel flowing through the media line can thus advantageously be reduced or avoided.

In one embodiment, the longitudinal housing member is an extruded profile. But other types of manufacture are also conceivable.

The system disclosed here further comprises at least one control unit. The control device is set up, inter alia, to carry out the technology disclosed here and in particular the method steps disclosed here. For this purpose, the control device can regulate the actuators of the system at least partially and preferably completely (closed loop control) or control (open loop control) based on the signals provided. Alternatively or additionally, the control unit can also be integrated in another control unit, for example in a higher-level control unit. The control device can interact with other control devices of the motor vehicle.

The control device can be preassembled in the memory or the common housing or can be fully integrated.

According to the technology disclosed here, a synergetic installation space is provided, in particular a location of all components and subcomponents of the high-voltage battery, the operating resources and the control devices and subcomponents ( S -Box, AKF & CN filter) and various aids (cables, wires, etc.) at a central point of the vehicle (including in the underfloor and rear seat), especially in a housing.

The integration concept of a housing can be designed in such a way that the different energy sources (fuel, storage cells) are arranged adjacent to one another in a common housing. Thanks to the synergetic use of the support function of the housing for the equipment container and the encapsulation of the high-voltage storage, more storage content for the energy sources can be generated in the same installation space. Additional partition walls (a housing wall from the HVS and a housing wall from the equipment container) and assembly clearances between the equipment container and HVS can thus be omitted and replaced by a single partition wall without an assembly clearance. This design also allows the storage of equipment containers and HVS components and subcomponents. Due to the preassembly scope, additional components such as activated carbon filter (AKF) and external fuel filter (CN filter) and lines can be integrated into the housing. The structural integrity and use of the synergetic structural function for HVS and equipment containers allow the body to be more robust and crash-resistant than two or more separate components.

The synergetic use of the central installation space in the underfloor / rear area in only one housing, in conjunction with the resulting advantages of joint (pre-) assembly as functional aspects, is the core of the invention. The high integration in the central housing minimizes the risk of unprotected electrical connections, critical connections in the saddle space are significantly simplified. The central housing enables optimized cable routing by embossing in the cover part, which leads to package and assembly advantages. Assembly Ease of assembly is achieved by reducing it to one component. A pressure tank (fuel) is made possible in different material selection and design, joint assembly is thus possible.

The integration concept provides for a housing to be designed so that different energy sources (aggregate states) find a synergetic space. The housing, which is expediently located in the underfloor of the vehicle in hybrid to multi-material construction, can accommodate all components and subcomponents, which can be filled with the respective media. Aids (cables, wires, etc.) can be located or carried out next to the same. The structural integrity and functional integration can increase the robustness and crash safety of the body shell. The lines, in particular the media lines, can be laid or integrated in the longitudinal profiles. The lines can be included in the assembly before they are installed in the motor vehicle. The cables can be integrated in the side crash structure supports. The crash structure supports can be designed to be deformable for reasons of weight and because of the energy absorption, e.g. as Holkammerprofile. The at least one line can be preassembled by means of a line insertion system. The at least one line can be a line package comprising at least one fuel line and at least one purge air line.

The line can be held in the housing by stamping and / or by an extruded profile. For example, a sheet with a contour open on one side can be provided. The cable can be inserted from the outside with an elastomer bearing, which can simplify assembly. The elastomer bearing located on the line can be mounted in the C-shaped contour during assembly, which can result in a positive connection. Compression of the elastomer in connection with the tapering profile. Lines or components can preferably be provided in an embossed cover or bottom of the high-voltage store. Cable routing through embossing in the cover part enables the package to be used better for cables in the vehicle by means of additional holders. A pressure tank (fuel) is advantageously made possible here in different material selection and design. The elimination of fasteners for the respective lines and the possibility of using them far away Exhaust system (heat input into neighboring components) can be further advantages.

The preferred integration of the cooling system over the extended housing for the synergetic use of the common installation space (preferably underfloor / rear seat) for high-voltage storage (HVS) including storage management electronics (SME) and fuel tank / fuel supply system (KVA) etc. Containers represent one aspect of the technology disclosed here. The integration of all components and subcomponents in the storage housing can enable an extension / expansion of the cooling elements used for cooling the high-voltage storage device in the installation space of the operating material container, as a result of which the operating medium can also be cooled. An improvement in efficiency or efficiency can advantageously be achieved by the cooling mechanism. The cooling element can be passed through the partition and hermetically sealed or welded.

• - Verbesserung bzgl. Bauraumausnutzung, Gewicht bzw. Kosten durch Bauteilreduktion, insbesondere Verringerung der Anzahl an Bauteilen sowie deren Montageabstände bzw. Trennwände;
• - Vereinfachte Montage ansonsten schwer zugänglicher Bauteile durch Bauteilreduktion und Vormontage;
• - Verringerung bzw. Entfall von Montagevorrichtungen wie Haltebügel, Klammern und sonstigen Befestigungshilfsmittel durch Bauteilreduktion;
• - Verbesserte Steifigkeit durch zumindest teilweise lasttragenden Betriebsmittelbehälter;
• - Strukturintegrität kann erhöht werden;
• - Verbesserte Crash- und Steifigkeitswerte des Kraftfahrzeugs;
• - Verbesserte Crashsicherheit der Karosserie
• - Verringerte Wahrscheinlichkeit ungeschützter elektrischer Verbindungen durch gemeinsames Gehäuse;
• - Bessere Leitungsführung durch zumindest teilweise Integration der Leitungsführung in das Gehäuse, verringert Leitungsbeschädigungen, Wahrscheinlichkeit ungeschützter Verbindungen, Gewicht, Bauraumbedarf bzw. Herstellkosten; und/oder
• - Verringerung der Gasemissionen durch Wärmeabfuhr aus dem Betriebsmittelbehälter bzw. verringerten Wärmeeintrag in das Betriebsmittel.

The technology disclosed here advantageously has one or more of the following advantages:

• - Improvement with regard to the use of installation space, weight and / or costs by reducing the number of components, in particular reducing the number of components as well as their assembly clearances or partition walls;
• - Simplified assembly of otherwise difficult to access components through component reduction and pre-assembly;
• - Reduction or elimination of assembly devices such as holding brackets, clamps and other fastening aids by reducing the number of components;
• - Improved rigidity due to at least partially load-bearing equipment container;
• - structural integrity can be increased;
• - Improved crash and stiffness values of the motor vehicle;
• - Improved crash safety of the body
• - Reduced likelihood of unprotected electrical connections through common housing;
• - Better cable routing by at least partially integrating the cable routing into the housing, reducing line damage, probability of unprotected connections, weight, installation space requirement or manufacturing costs; and or
• - Reduction of gas emissions through heat dissipation from the equipment container or reduced heat input into the equipment.

• 1 eine schematische Querschnittsansicht der Baugruppe entlang der Schnittlinie I-I der 2;
• 2 eine schematische Querschnittsansicht der Baugruppe entlang der Schnittlinie II-II der 1;
• 3 eine schematische Draufsicht auf die Baugruppe entlang der Linie III-III der 2;
• 4-7 verschiedene schematische Ansichten eines Kraftfahrzeugs mit der hier offenbarten Baugruppe;
• 8 eine schematische Querschnittsansicht einer weiteren Baugruppe;
• 9 eine schematische Querschnittsansicht einer weiteren Baugruppe; und
• 10 eine schematische Querschnittsansicht einer Speicherzelle 230.

The technology disclosed here will now be explained with reference to the figures. Show it:

• 1 is a schematic cross-sectional view of the assembly along the section line I - I the 2 ;
• 2 is a schematic cross-sectional view of the assembly along the section line II - II the 1 ;
• 3 is a schematic plan view of the assembly along the line III-III of 2 ;
• 4-7 different schematic views of a motor vehicle with the assembly disclosed here;
• 8th a schematic cross-sectional view of a further assembly;
• 9 a schematic cross-sectional view of a further assembly; and
• 10 is a schematic cross-sectional view of a memory cell 230 ,

The 1 to 3 show schematic different cross-sectional views of the assembly disclosed here. The assembly includes an equipment container 100 , which is designed here as a saddle container. The resource container 100 comprises two container chambers 110 . 120 , as well as a connection area 130 , The connection area 130 connects the two container chambers here 110 . 120 over the middle tunnel M time. The resource container 100 has a storage volume S on. The resource container 100 is formed here by a lower shell 102 and an upper shell 101 , It could also be provided that three or more parts of the equipment container 100 form.

The assembly also includes an energy storage device 200 with two storage cases 210 . 220 , in the storage cases 210 . 220 are a plurality of components of the energy storage device 200 added. In particular, the memory housing can accommodate one or more of the following elements: memory cells 230 , Components of power electronics 240 , Activated carbon filter, external fuel filter, contactor (s) to interrupt the power supply to the motor vehicle, cooling element (s), electrical conductors, control unit (s), media line (s) for the equipment container 100 , Water tank, low-voltage battery (s), etc.

The assembly is shown here in the installed position, just as the assembly is arranged in a horizontally aligned motor vehicle in the installed state.

Each of the container chambers 110 . 120 is here on one of the two storage casings 210 . 120 in the investment area A appropriate. The Resources container 100 does not have any other body connection points via which the equipment container is attached to the body of the motor vehicle. The body connection points of the storage case 210 . 220 have been omitted for simplicity. The resource container 100 is for the most part above the storage case 210 . 220 arranged (cf. 1 ). The lower shell 102 of the equipment container 100 surrounds the storage housing at least in some areas 210 . 220 (see. 2 ).

The resource container 100 , especially the container chambers 110 . 120 can with the respective storage case 210 . 220 each have a common housing wall section 212 . 222 form. The common housing wall section 212 . 222 is the only fluid-tight partition between the storage volume S of the equipment container 100 and the interior I the energy storage device 200 , Thus, according to the technology disclosed here, two separate and fluid-tight housing wall sections of the operating material container are not 100 and energy storage device 200 placed on top of one another and fastened to one another, but instead only a single partition is provided. Such a single-walled configuration reduces the space required and the total weight of the assembly compared to a double-walled solution. The partition can expediently be provided in order to form the fluid-tight partition in a semi-finished product of the storage housing or in a semi-finished product of the operating medium container, while the operating medium container is being assembled 100 and energy storage device 200 this partition is connected to a corresponding recess of the other semi-finished product. However, such a single fluid-tight partition does not have to be provided.

• - eine erste Seite, die eingerichtet ist, dass Betriebsmittel zu kühlen, und
• - eine zweite Seite, die eingerichtet ist zu kühlende Elemente 230, 240, 250 der Energiespeichereinrichtung 200 zu kühlen.

The assembly includes a cooling device 300 , The cooling device 300 includes two cooling elements 310 . 320 , The two cooling elements 310 . 320 are provided here in plant area A. The first cooling element 310 is here inside the storage case 210 intended. The first cooling element 310 is thermally connected with cooling fins 140 that in the storage volume S protrude. The second cooling element 320 is outside the storage case 220 arranged (cf. 1 & 3 ). The cooling elements 310 . 320 are arranged here so that they both contain the equipment in the equipment container 100 as well as the energy storage device 200 can cool. The two cooling elements 310 . 320 each have

• - a first side, which is set up to cool the equipment, and
• - A second page, which is set up elements to be cooled 230 . 240 . 250 the energy storage device 200 to cool.

In one embodiment of the technology disclosed here, the cooling element (here the second cooling element 320 ) in the storage volume S of the equipment container 100 protrude. Such an embodiment can also cool part of the second side of the operating medium. The cooling elements particularly preferably extend 310 . 320 over the entire length of the first or second storage housing 210 . 220 , The cooling elements are useful 310 . 320 formed by cooling channels. In the operation of the motor vehicle, coolant can flow through these cooling channels, for example, which also cools other components of the motor vehicle, such as the internal combustion engine and / or the electric drive machine. The housing shape often depends on the equipment container 100 or from the storage case 210 . 220 depends on the specific installation situation in the motor vehicle and is significantly influenced by this. Cooling channels can be easily adapted to the different housing geometries due to the installation situation. Instead of the plate-shaped geometry of the cooling elements shown here 310 . 320 Other geometries and differently designed and arranged cooling elements can also be provided.

In the storage case 210 . 220 are a variety of memory cells 230 attached to the top of the respective storage case. The fastening section 232 is here above the electrical connections 234 arranged (cf. 2 and 10 ). In other words, is the attachment section 232 In the installed position, it is further away from the road surface than the electrical connections 234 , Cell ventilation can also be used 236 (see. 10 ) a memory cell 230 each above the electrical connection 234 be arranged. A housing cover can be advantageous in the storage case base, that is to say in the side facing the road surface in the installed position 214 . 224 be provided. This can expediently be detachably attached to the storage housing 210 . 220 to be appropriate. This cover can thus advantageously be opened during maintenance or service use. The individual memory cells are then advantageous 230 Can be individually checked and replaced without dismantling additional holding elements. At the same time, other components of the energy storage device 200 , such as the components of power electronics 240 or the control unit 250 , in the installed position of the storage housing 210 . 220 hanging or upside down. This is particularly preferred at least one cooling element 310 . 320 above the at least one memory cell 230 in particular provided such that the cooling element 310 . 320 the top end of the memory cell 230 cools. For this purpose, the cooling element 310 . 320 be thermally connected to the end face. The fastening section can particularly preferably be on or immediately adjacent to the end face 232 be provided. A more uniform cooling of the memory cells can thus be advantageous 230 can be achieved, which can have a positive effect on the degradation of the memory cells. The hanging memory cells 230 as well as their connection to the cooling elements 310 . 320 are only a preferred embodiment. The memory cells 230 could also be provided standing on the storage case floor in an alternative embodiment.

The shape and size of the resource container 100 can vary depending on the installation situation in the vehicle variant. Likewise, only one storage housing could be provided.

To visualize different design variants, here is the attachment of the container chambers 110 . 120 to the respective storage case 210 . 220 as well as the arrangement of the cooling elements 310 . 320 designed differently. Preferably, there are two fastenings of the same design and two cooling elements of the same design 310 . 120 used in a motor vehicle.

The 4-7 show various schematic views of a motor vehicle with the assembly disclosed here. The storage case 210 . 220 start here under the rear seats and extend far into the underfloor area. The storage case 210 . 220 end here in the vehicle's longitudinal direction at the level of the dashboard.

The resource container 100 at least partially encloses the storage case 210 . 220 , The equipment container is at the top 100 limited here by the rear seats. In the direction of the vehicle's longitudinal axis X, the heel plate and the rear axle delimit the equipment container 100 , The resource container 100 can be formed in several parts here.

In the motor vehicle shown here there is a central tunnel M intended. The resource container 100 is therefore designed as a saddle container. There are also two separate storage enclosures 210 . 220 intended. However, this does not have to be the case. The center tunnel could be in a front-wheel drive motor vehicle M be made smaller or omitted. Then, for example, a single one could be in the vehicle transverse direction Y continuous storage housing and a single one in the vehicle transverse direction Y continuous container chamber may be provided.

The 8th shows a further embodiment of the assembly disclosed here. The specific design and arrangement of the electronic components of the energy storage device 200 was simply omitted. In the 8th the focus is on the housing side members 216 . 226 and the media lines 152 . 154 , All other components of the assembly can be configured as disclosed in connection with the other figures or in the general part. The storage case 110 . 220 each have a housing side member 216 . 226 on. The housing side members 216 . 226 can, for example, on the outer outer side walls 215 . 225 be firmly attached. The housing side members 216 . 226 are designed as hollow beams and have a honeycomb structure. Such a housing side member 216 . 226 is advantageously set up to reduce kinetic energy occurring in the event of a collision by plastic deformation. The honeycomb structure can advantageously have a plurality of chambers. At least one media line can be particularly preferred 152 . 154 in the housing side member 216 . 226 be included. The media line is useful 152 . 154 recorded in the chamber that is directly attached to the storage case 210 . 220 borders. The media lines 152 . 154 are fully included here. Alternatively, it can be provided that the media line cross section is only partially included, as is the case, for example, in connection with the 9 is described in more detail. The storage case 210 . 220 are here in the underfloor area between the outer floor rails 410 . 420 arranged. The outer floor rails can have any suitable cross-sectional profile. Fastening means are not shown here, via which the housing side members 216 . 226 here to the outer floor rails 410 . 420 are connected. Dotted lines indicate further media lines, which are also through the housing side members 216 . 226 can be passed through. The body connection of the energy storage device 200 to the vehicle body, in particular the housing side member disclosed here 216 . 226 , can also be designed differently. The media guide from or to the equipment container can also be designed differently.

The 9 shows a further embodiment of the technology disclosed here. Only the differences compared to the previous embodiments are explained below. The components of the energy storage device have been simplified in FIG 200 as well as the body connection omitted. The storage case 210 . 220 here comprise a storage housing wall with a section which has a C-shaped or U-shaped cross section. This section can, for example, on an inner outer side wall 213 . 223 or on a housing cover 214 . 224 be provided. In this section, for example, the at least one media line can be installed 152 . 154 be led. The media management 152 . 154 can be included in full or in part. At least 50 percent or at least 70 percent of the media line cross section is preferred in the C - Shaped or U-shaped section added. The arrangement of the media line shown here 152 . 154 is more space-saving, safer against intrusion and / or easy to assemble or disassemble. Any elastomeric bearings that line the media line are not shown here 152 . 154 can fix.

The 10 shows an enlarged view of a memory cell 230 in the installation position. The cell ventilation 236 and the fastening sections 232 are here above the electrical connection 234 arranged. The memory cell 230 can otherwise have any suitable shape.

In connection with the technology disclosed here, the term “above” means that the component arranged above (for example “cooling element 310”, cf. 1 ) in the installation position in the direction of the vehicle vertical axis Z is further apart from the road surface than a component arranged below it in comparison (for example “storage cell 230”, cf. 1 ). In the figures shown here, the Z axis denotes the vehicle vertical axis, the X axis the vehicle longitudinal direction, and the Y axis the vehicle transverse direction.

Preferred configurations are shown in the figures. At the same time it is conceivable that the equipment container 100 and the energy storage device 200 for example, differing in size, geometric shape and / or number of housings.

For the sake of legibility, the expression "at least one" has been partially omitted for simplicity. If a feature of the technology disclosed here is described in the singular or indefinitely (e.g. the / an upper shell, the / a lower shell, the / a container chamber, the / a connection area, the / a cooling fin, the / a media line, the / a Energy storage device, the / a storage housing, the / a common housing wall section, the / an outer side wall, the / a housing cover, the / a longitudinal housing member, the / a storage cell, the / a component, the / a control device, the linear cooling device, the / a Cooling element, the / a longitudinal floor member, etc.), the majority of them should also be disclosed at the same time (e.g. the at least one upper shell, the at least one lower shell, the at least one container chamber, the at least one connecting area, the at least one cooling fin, the at least one media line , the at least one energy storage device, the at least one storage housing, the at least one common housing wall section, the at least one outer side wall, the at least one housing cover, the at least one housing side member, the at least one storage cell, the at least one component, the at least one control device, the at least one cooling device, the at least one cooling element, the at least one bottom side member, etc.).

In the context of the technology disclosed here, the term “essentially” (for example “essentially vertical axis”) encompasses the exact property or the exact value (for example “vertical axis”) as well as deviations which are insignificant for the function of the property / value (eg "tolerable deviation from vertical axis").

The foregoing description of the present invention has been presented for purposes of illustration only and is not intended to limit the invention. Various changes and modifications are possible within the scope of the invention without leaving the scope of the invention and its equivalents.

LIST OF REFERENCE NUMBERS

100

Resources container

101

Upper shell

102

subshell

110, 120

container chambers

130

connecting area

140

cooling fins

152, 154

media lines

200

Energy storage device

210, 220

storage Enclosures

212, 222

common housing wall section

213, 223

inner outside wall

214, 224

housing cover

215, 225

outer outside wall

216, 226

Housing longitudinal beams

230

memory cell

240

Power electronics components

250

control unit

300

cooling device

310.320

cooling element

410, 420

Floor side members

I

Interior I

M

center tunnel

S

storage volume

V

internal volume

Claims (10)

Motor vehicle assembly, comprising: - at least one equipment container (100) for storing equipment that is liquid under ambient conditions; and at least one energy storage device (200) for storing electrical energy, the energy storage device (200) comprising at least one storage housing (210, 220), the at least one storage housing (210, 220) being attachable to the body of the motor vehicle in the installed position, and wherein the equipment container (100) is fastened to the at least one storage housing (210, 220) and has no further load-bearing body connection points. Assembly after Claim 1 , wherein the operating material container (100) is attached to the at least one storage housing (210, 220) in a material-locking and operating-tight manner. Module according to one of the preceding claims, wherein the storage housing (210, 220) is set up to be fastened to at least one outer floor longitudinal member (410, 420) and / or to at least one cross member of the body. Module according to one of the preceding claims, wherein the operating material container (100) is self-supporting. Module according to one of the preceding claims, wherein the operating material container (100) is a saddle container, which has two container chambers (110, 120) and a connection area (130), wherein the energy storage device (200) has at least one storage housing (210, 220) , and wherein each of the container chambers (110), 120) is respectively attached to a storage housing (210, 220). Assembly according to one of the preceding claims, wherein the operating material container (100) is set up to transmit forces and / or moments from a first storage housing (210) to a second storage housing (210). Assembly according to one of the preceding claims, wherein the operating material container (100) has stiffening elements for transmitting the forces and / or moments. Module according to one of the preceding claims, wherein the energy storage device (200), in particular the common housing wall section (212, 222), is designed in such a way that equipment containers (100) with different contours and / or different storage volumes (S) can be attached. Module according to one of the preceding claims, wherein the operating medium container (100) and the energy storage device (200) have at least one common housing wall section (212, 222), wherein the common housing section (212, 222) an interior (I) of the energy storage device (200) fluid-tight separates from a storage volume (S) of the equipment container (100), and the housing wall section (212, 222) is single-walled. Motor vehicle, comprising an assembly according to one of the preceding claims.

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