CN113644385B - Battery cell module assembling method, battery cell module and battery pack - Google Patents
Battery cell module assembling method, battery cell module and battery pack Download PDFInfo
- Publication number
- CN113644385B CN113644385B CN202110929836.XA CN202110929836A CN113644385B CN 113644385 B CN113644385 B CN 113644385B CN 202110929836 A CN202110929836 A CN 202110929836A CN 113644385 B CN113644385 B CN 113644385B
- Authority
- CN
- China
- Prior art keywords
- battery cell
- electrode
- busbar
- battery
- cell module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/514—Methods for interconnecting adjacent batteries or cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/258—Modular batteries; Casings provided with means for assembling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
- H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/514—Methods for interconnecting adjacent batteries or cells
- H01M50/517—Methods for interconnecting adjacent batteries or cells by fixing means, e.g. screws, rivets or bolts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention is suitable for the technical field of batteries, and provides a battery cell module assembly method, a battery cell module and a battery pack. The battery cell module assembling method comprises the following steps: arranging and placing a plurality of battery cores; fixing the relative positions of the plurality of battery cells; installing a busbar, wherein an electrode installation hole matched with the battery cell electrode is formed in the busbar, and after the busbar is installed, a dispensing gap is formed between the battery cell electrode and the busbar; filling conductive adhesive into the adhesive dispensing gap; and cooling the conductive adhesive. This scheme is through the electrode mounting hole suit with the busbar on electric core electrode to fill conductive adhesive between the clearance of electric core electrode and busbar, can get up the busbar and the electrode of each electric core through conductive adhesive and form the electric current route, avoided the welding process, guarantee equipment finished product quality, and the change can be dismantled to electric core module under the condition of not destroying spare part to the electric core module that obtains through this scheme equipment, improve the utilization ratio of electric core module.
Description
Technical Field
The invention belongs to the technical field of batteries, and particularly relates to a battery cell module assembly method, a battery cell module and a battery pack.
Background
Along with the development of new energy technologies such as wind-solar energy storage, the research of energy storage battery will receive the attention of trade, and energy storage battery mainly exists with the form of battery package, and the battery package is the unified whole after a plurality of electric core modules and battery management system control jointly or manage, and the electric core module then indicates the module of the same shell frame encapsulation of a plurality of electric cores and constitutes together.
At present, mainly connect through the busbar between a plurality of electric cores of electricity core module, and the busbar is generally connected through the welded mode with the electrode of electric core, the assembly process of electricity core module is generally with the busbar fixed on the appointed welding position of electric core electrode, perhaps directly overlap the busbar on the electrode, then with electric core through producing the interior appointed position of line transmission band removal to the welding machine and weld, melt electric core and busbar material through the welding and form the melting region, thereby form the electric current route.
However, in the assembly process of the battery cell module in the prior art, the busbar is easily deformed when being welded with the battery cell electrode, the quality of the battery cell module is affected, and the assembled battery cell module is not easy to detach and replace.
Disclosure of Invention
The embodiment of the invention aims to provide a battery cell module assembling method, and aims to solve the technical problems that in the battery cell module assembling process in the prior art, a busbar is easy to deform when being welded with a battery cell electrode, the quality of a battery cell module is influenced, and the assembled battery cell module is not easy to disassemble and replace.
The embodiment of the invention is realized in such a way that the battery cell module assembly method comprises the following steps:
arranging and placing a plurality of battery cores;
fixing the relative positions of the plurality of battery cores;
installing a busbar, wherein an electrode installation hole matched with the battery cell electrode is formed in the busbar, and after the busbar is installed, a dispensing gap is formed between the battery cell electrode and the busbar;
filling conductive adhesive into the adhesive dispensing gap;
and cooling the conductive adhesive.
Another object of the embodiments of the present invention is to provide a battery cell module, where the battery cell module includes: the battery comprises a base, a battery cell, a fixing plate and a busbar;
the base is used for loading the battery cell, and a plurality of placing grooves matched with the battery cell are arranged on the base in an arrayed manner;
the fixing plate is used for fixing the relative positions of the plurality of electric cores, and fixing holes matched with the electrodes of the electric cores are formed in the fixing plate;
the busbar is used for connecting two or more battery cores, the busbar is provided with electrode mounting holes matched with the electrodes of the battery cores, glue dispensing gaps are formed between the electrode mounting holes and the electrodes of the battery cores, and conductive adhesive is filled in the glue dispensing gaps.
Another object of the embodiments of the present invention is to provide a battery pack, where the battery pack includes the above battery cell module.
The embodiment of the invention provides an electric core module assembling method, after the relative positions of all electric cores forming an electric core module are fixed, a bus bar arranged with electrode mounting holes is matched with the electric cores, the electrode mounting holes on the bus bar are sleeved on the electric core electrodes, conductive adhesive is filled between the electric core electrodes and gaps of the bus bar, the bus bar can be connected with the electrodes of all the electric cores through the conductive adhesive to form a current path, a welding procedure is avoided, the quality of an assembled finished product is guaranteed, the electric core module obtained through the assembling of the scheme can be disassembled and replaced under the condition of not damaging parts, and the utilization rate of the electric core module is improved.
Drawings
Fig. 1 is a three-dimensional structure diagram of a battery cell module according to an embodiment of the present invention;
fig. 2 is an exploded view of a battery cell module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a battery cell according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a bus bar according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a bus bar and a cell electrode in cooperation according to an embodiment of the present invention;
in the drawings: 1. a base; 11. a placement groove; 2. an electric core; 21. a cell electrode; 211. a first bump structure; 212. a second bump structure; 3. a fixing plate; 31. a fixing hole; 32. a positioning column; 4. a bus bar; 41. an electrode mounting hole; 42. positioning holes; 51. dispensing gaps; 52. and (4) dispensing a glue groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
As shown in fig. 1, a schematic structural diagram of a battery cell module assembled by the assembly method provided by the embodiment of the present invention is shown, where the assembly method of the battery cell module includes:
step a, arranging and placing a plurality of battery cores.
In the embodiment of the present invention, the battery cell module generally includes a plurality of battery cells 2 connected to each other, and the embodiment of the present invention does not limit the specific operation of arranging and placing the plurality of battery cells 2, for example, as shown in fig. 1, the battery cell module generally includes a base 1, a plurality of placing slots 11 for placing the battery cells are arranged on the base 1, and as shown in fig. 2, a manipulator may be used to grasp the battery cells 2 and then place the battery cells 1 in the placing slots 11, so as to complete the arrangement and placement of the plurality of battery cells 2. Before arranging and placing a plurality of electric cores 2 in this embodiment, a base 1 provided with a placing groove 11 is provided, and the base 1 is placed on a station for placing the electric cores 2, for example, the base 1 may be placed on a conveying roller, and the conveying roller conveys the base to the station for placing the electric cores 2.
And b, fixing the relative positions of the plurality of electric cores 2.
In the embodiment of the present invention, fixing the relative positions of the plurality of electrical cores 2 refers to fixing the plurality of electrical cores 2 as a whole, so as to avoid relative shaking between the electrical cores 2. Because arrange and only place electric core 2 in standing groove 11 of base 1 when placing electric core 2, for the place of convenient electric core 2, generally need to have certain fit clearance between standing groove 11 and the electric core 2, the in-process of next station is carried to base 1 and electric core 2 like this, it is inhomogeneous to lead to relative position between electric core 2 and the electric core 2 to probably appear electric core 2 rocks, the installation of inconvenient busbar 4, so need fixed relative position between a plurality of electric cores 2 after arranging a plurality of electric cores 2 and placing.
In the embodiment of the present invention, a method for fixing relative positions between multiple battery cells 2 is not limited, for example, the fixing plate 3 may be used to fix relative positions between multiple battery cells, and the fixing holes 31 matched with the battery cell electrodes 21 are arranged on the fixing plate 3, as shown in fig. 3, the battery cell electrodes 21 are in a "convex" structure and include a first convex structure 211 and a second convex structure 212, and the fixing plate 3 is installed on a side surface of the battery cell 2 where the battery cell electrodes 21 are arranged by matching the fixing holes 31 on the fixing plate 3 with the first convex structures 211 of the battery cell electrodes 21. The second protruding structures 212 of the cell electrodes 21 need to be matched with the bus bars 4, and in order to avoid affecting the installation of the bus bars 4, the upper surface of the fixing plate 3 is not higher than the upper surface of the first protruding structures 211 of the cell electrodes after the fixing plate 3 is installed.
And c, installing a busbar 4, wherein an electrode installation hole 41 matched with the cell electrode 21 is formed in the busbar 4, and a dispensing gap 51 is formed between the cell electrode 21 and the busbar 4 after the busbar 4 is installed.
In the embodiment of the present invention, the electrode mounting hole 41 on the bus bar 4 is sleeved on the second protrusion structure 212 of the cell electrode, so as to mount the bus bar 4. The present embodiment does not limit the specific installation method of the bus bar 4, for example, the installation of the bus bar 4 may specifically include the following steps:
step c1, positioning the relative position between the busbar 4 and the cell electrode 21, so that the dispensing gaps 51 on the peripheral surfaces of the cell electrode 21 are uniformly distributed.
In the embodiment of the present invention, the positioning of the relative position between the bus bar 4 and the cell electrode 21 means that the installation reference of the bus bar 4 is determined before the electrode installation hole 41 on the bus bar 4 is nested on the cell electrode 21, so that the gaps between the peripheral surfaces of the second protrusion structures 212 of the cell electrode and the bus bar 4 are uniform after the bus bar 4 is installed, and thus the thickness of the conductive adhesive between the peripheral surfaces of the cell electrode 21 and the bus bar 4 is uniform, and the conductive quality is ensured. The specific operation of positioning the relative position between the bus bar 4 and the cell electrode 21 is not limited in the embodiment of the present invention, for example, one of the fixing plate 3 and the bus bar 4 is provided with a positioning hole 42, the other is provided with a positioning post 32, and the relative position between the bus bar 4 and the cell electrode 21 is positioned by matching the positioning hole 42 and the positioning post 32, as shown in fig. 2, the embodiment takes the positioning post 32 provided on the fixing plate 3 and the positioning hole 42 provided on the bus bar 4 as an example, but is not limited thereto.
And c2, nesting the electrode mounting hole 41 on the cell electrode 21.
In the embodiment of the present invention, after the relative position between the bus bar 4 and the cell electrode 21 is located, the electrode mounting hole 41 may be directly embedded on the cell electrode 21 according to the mounting standard of the bus bar 4.
And c3, extruding the bus bar 4 to enable the bus bar 4 to be in close contact with the contact surface of the battery cell electrode 21.
In the embodiment of the present invention, pressing the bus bar 4 means pressing the bus bar 4 toward the electric core 2 from the upper surface of the bus bar 4, so that the upper surface of the bus bar 4 is in close contact with the upper surface of the first protruding structure 211 of the electric core electrode 21, air between the bus bar 4 and the electric core electrode 21 can be removed, contact resistance can be reduced, and conductive adhesive (not shown in the figure) can be prevented from overflowing from a gap between the contact surfaces of the bus bar 4 and the electric core electrode 21 to affect normal use of the electric core module.
And d, filling conductive adhesive into the adhesive dispensing gap.
In the embodiment of the present invention, as shown in fig. 5, a schematic structural diagram of the bus bar 4 and the cell electrode 21 after the bus bar 4 is installed is provided, in the embodiment, a specific size of the dispensing gap 51 between the cell electrode 21 and the bus bar 4 is not limited, for example, the dispensing gap 51 may be between 0.1mm and 0.3mm, but is not limited thereto, a dispenser may be used to fill conductive adhesive into the dispensing gap 51, for example, the common conductive adhesive is composed of a viscous resin matrix and conductive particles, and the viscous resin matrix may use epoxy resin, silicone resin, acrylic resin, and the like to ensure effective adhesive force of the contact surface; the conductive particles may be silver particles having a conductivity greater than that of aluminum, copper ions, graphite particles having a higher conductivity, or the like, but the specific composition of the conductive paste is not limited thereto. In this embodiment, the amount of the filled conductive adhesive is not particularly limited, and preferably, after the bus bar 4 is installed, the upper surface of the bus bar 4 is higher than the upper surface of the second protrusion structure 212 of the cell electrode, a dispensing slot 52 is further formed between the cell electrode 21 and the bus bar 4, and the dispensing slot 52 is communicated with the dispensing gap 51, so that the filling of the conductive adhesive into the dispensing gap 51 further includes filling the conductive adhesive into the dispensing slot 52, and the amount of the filled conductive adhesive is determined such that the upper surface of the conductive adhesive is flush with the upper surface of the bus bar 4. After the conductive adhesive is filled, the conductive adhesive can be pressed to fill the adhesive dispensing gap 51 and the adhesive dispensing groove 52 completely, so that the current conduction between the cell electrode 21 and the busbar 4 and the firm adhesion between the cell electrode 21 and the busbar 4 are ensured. The depth of the dispensing slot 52 is not limited in this embodiment, for example, the depth of the dispensing slot 52 may be between 0.4mm and 06 mm. By making the upper surface of the busbar 4 higher than the upper surface of the second protruding structure 212 of the cell electrode, the dispensing groove 52 is formed between the busbar 4 and the cell electrode 21, and the dispensing groove 52 can make the conductive adhesive have a sufficient leveling space, so that the conductive adhesive is not easy to overflow to the surface of the busbar 4.
And e, cooling the conductive adhesive.
In the embodiment of the invention, the conductive adhesive can be naturally cooled at normal temperature, and the assembled battery cell module is placed at normal temperature to be naturally cooled by the conductive adhesive.
The embodiment of the invention provides a method for assembling a battery cell module, place a plurality of battery cells 2 by arranging, and fix the relative position between a plurality of battery cells 2, then connect each battery cell 2 with a busbar 4 through the cooperation of an electrode mounting hole 41 and a battery cell electrode 21, finally fill conductive adhesive in the gap between the busbar 4 and the battery cell electrode 21, wait for the conductive adhesive to cool off and finish the assembly of the battery cell module, the scheme utilizes the conductive adhesive to fixedly connect the busbar 4 and the battery cell electrode 21 and make a current path form between the busbar and the battery cell electrode 21, compared with the assembly method of the existing battery cell module, the welding process is avoided, ensure the quality of the assembled product, and the battery cell module assembled by the scheme can be disassembled and replaced without damaging parts, the utilization rate of the battery cell module is improved, and the filling of the conductive adhesive can also bring certain anti-seismic buffering effect for the connection structure between the busbar and the battery cell electrode.
In another embodiment of the present invention, before the bus bar is installed, the cell module assembling method further includes:
and f, spraying conductive paint on the surface of the battery cell electrode 21.
In the embodiment of the present invention, step f is performed before step c, because the surfaces of the busbar 4 and the cell electrode 21 are rough surfaces, if the surface of the busbar 4 is directly contacted with the surface of the cell electrode 21, the actual complete contact area of the surface of the busbar 4 occupies only 10% to 20% of the total area, so that a large contact resistance is generated between two conductors, and when the contact resistance is large, a voltage drop will be generated to reduce the input power of the device, and in addition, local overheating and reliability are also reduced. The contact area of the contact surface of the cell electrode 21 and the busbar 4 can be increased by spraying conductive paint (not shown in the figure) on the surface of the cell electrode 21, so that the contact resistance can be reduced. For example, the conductive paint may be silver paste paint or copper silver paint, but is not limited thereto.
In the embodiment of the present invention, after the fixing plate 3 is mounted, the fixing plate 3 is made of an insulating material, and after the fixing hole 31 on the fixing plate 3 is matched with the first protrusion structure 211 of the cell electrode, the fixing plate 3 can cover the surface of the cell 2, and only the cell electrode 21 can be exposed on the surface, so as to facilitate the surface spraying of the cell electrode 21. Of course, in order to avoid the areas that need to be sprayed during spraying, a protective film (not shown) may be covered on the surface of the fixing plate 3, and the protective film is torn off after the spraying is completed, so as to avoid the conductive paint being sprayed onto the areas that need not be sprayed.
According to the battery cell module assembling method provided by the embodiment of the invention, the conductive paint is sprayed on the surface of the battery cell electrode 21 before the busbar 4 is installed, so that the contact area of the contact surface of the busbar 4 and the battery cell electrode 21 can be increased, and the working performance of the battery cell module is ensured.
As shown in fig. 1-2, in another embodiment of the present invention, a cell module is further provided, where the cell module includes: the battery comprises a base 1, a battery cell 2, a fixing plate 3 and a busbar 4;
the base 1 is used for loading the battery cells 2, and a plurality of placing grooves 11 matched with the battery cells 2 are arranged on the base 1;
the fixing plate 3 is used for fixing the relative positions of the plurality of battery cells 2, and a fixing hole 31 matched with the battery cell electrode 21 is formed in the fixing plate 3;
the busbar 4 is used for connecting two or more electric cores 2, the busbar 4 is provided with an electrode mounting hole 41 matched with the electric core electrode 21, a dispensing gap is formed between the electrode mounting hole 41 and the electric core electrode 21, and conductive adhesive is filled in the dispensing gap.
In the embodiment of the present invention, the specific structure of the base 1 is not limited, the base 1 may be made of an insulating material, the battery cells 2 are matched with the placement grooves 11 on the base 1, the base 1 may connect a plurality of battery cells 2 together while loading the battery cells 2, and the shapes of the placement grooves 11 are matched with the shapes of the battery cells 2.
In the embodiment of the present invention, the fixing plate 3 is made of an insulating material, the fixing plate 3 fixes the relative position between the plurality of battery cells 2 so as to prevent the battery cells 2 from shaking in the placing groove 11, and the fixing plate 3 is disposed on the surface of the battery cells 2 on the side where the electrodes are disposed by matching the fixing holes 31 on the fixing plate 3 with the battery cell electrodes 21, so as to fix the relative position between the battery cells 2, as shown in fig. 3, the battery cell electrodes 21 are in a "convex" structure and include first protruding structures 211 and second protruding structures 212, the matching of the fixing holes 31 on the fixing plate 3 and the battery cell electrodes 21 means that the fixing holes 31 are matched with the first protruding structures 211 of the battery cell electrodes, and the thickness of the fixing plate 3 is not greater than the upper surface of the first protruding structures 211, so that the upper surface of the fixing plate 3 is not higher than the upper surface of the first protruding structures 211 after the fixing plate 3 is matched with the battery cell electrodes 21, so as to ensure that the bus bar 4 can be fully contacted with the upper surface of the first protruding structures 211.
In the embodiment of the present invention, the bus bar 4 may be a rectangular metal plate structure, the bus bar 4 connects two or more battery cells 2 together by connecting positive and negative electrodes of two adjacent battery cells 2, and in the embodiment, one bus bar 4 connects two battery cells 2 by way of example, but not limited thereto, for example, two ends of one bus bar 4 are respectively provided with an electrode mounting hole 41, the bus bar 4 is matched with the second protrusion structure 212 of the battery cell electrode 21 by the electrode mounting hole 41 to connect two adjacent battery cells 2, the electrode mounting hole 41 is sleeved on the second protrusion structure 212 of the battery cell electrode 21, and a dispensing gap 51 is formed between the electrode mounting hole 41 and the second protrusion structure 212 of the battery cell electrode, as shown in fig. 5, the dispensing gap 51 is filled with a conductive adhesive, and the conductive adhesive can, on one hand, the bus bar 4 and the battery cell electrode 21 can be adhered and fixed, and on the other hand, a current path can be formed between the bus bar 4 and the battery cells 2.
In the embodiment of the present invention, preferably, the upper surface of the fixing plate 3 may further be provided with a first positioning structure, and the bus bar 4 is provided with a second positioning structure matched with the first positioning structure, where the first positioning structure and the second positioning structure are matched to define a mounting position of the bus bar 4 on the fixing plate 3, and further define a mounting position of the bus bar 4 relative to the cell electrode 21, so as to ensure that a dispensing gap between each peripheral surface of the second protrusion structure 212 of the cell electrode and the bus bar 4 is uniform after the bus bar 4 is mounted. The present embodiment does not limit the specific structure of the first positioning structure and the second positioning structure, for example, the first positioning structure may be a positioning column 32, the second positioning structure may be a positioning hole 42, the positioning column 32 is disposed between two adjacent fixing holes 31 on the fixing plate 3, and the positioning hole 42 is correspondingly disposed between two electrode mounting holes 41 on the busbar 4.
According to the battery cell module provided by the embodiment of the invention, the electrode mounting hole 41 is formed in the bus bar 4, the dispensing gap 51 is formed between the electrode mounting hole 41 and the battery cell electrode 21, the dispensing gap 51 is filled with the conductive adhesive, the bus bar 4 is fixedly connected with the battery cell electrode 21 through the conductive adhesive, when one battery cell 2 in the battery cell module breaks down, the battery cell module is convenient to disassemble and replace, the utilization rate of the battery cell module is improved, the conductive adhesive brings the buffering and damping effects for the connection structure between the bus bar 4 and the battery cell electrode 21, and compared with the fact that rigid connection (such as welding connection) between the bus bar 4 and the battery cell electrode 21 is not easy to break under the action of external force, the connection stability between the bus bar 4 and the battery cell electrode 21 is ensured.
In another embodiment of the present invention, as shown in fig. 5, the depth dimension of the electrode mounting hole 41 is greater than the height dimension of the portion of the cell electrode 21 that fits into the hole.
In the embodiment of the present invention, the depth of the electrode mounting hole 41 is determined by the thickness of the bus bar 4, i.e. the thickness of the bus bar 4 is greater than the height of the cell electrode second protrusion 212. The end face of the cell electrode 21 may also be filled with conductive adhesive, and the conductive adhesive may be flush with the surface of the bus bar 4 on the side away from the fixing plate 3.
According to the battery cell module provided by the embodiment of the invention, the upper surface of the busbar 4 is higher than the upper surface of the battery cell electrode 21, so that the conductive adhesive has sufficient leveling space when being filled with the conductive adhesive, the conductive adhesive is prevented from overflowing to the upper surface of the busbar 4, and the conductivity of the battery cell module is ensured.
In another embodiment of the present invention, the surface of the cell electrode 21 is provided with a layer of conductive paint (not shown in the figure).
In the embodiment of the present invention, the conductive paint is generally sprayed on the surface of the cell electrode 21 by a spraying method, because the lower surface of the busbar 4 is in direct contact with the upper surface of the first protrusion structure 211 of the cell electrode, and there is no conductive adhesive therebetween, the surfaces of the busbar 4 and the cell electrode 21 are both rough surfaces, if the surface of the busbar 4 is in direct contact with the surface of the cell electrode 21, the actual complete contact area thereof occupies only 10% to 20% of the total area, so that a large contact resistance is generated between two conductors, and when the contact resistance is large, a voltage drop will be generated to reduce the input power of the device, and in addition, local overheating and reliability reduction will be caused.
According to the battery cell module provided by the embodiment of the invention, the contact area of the contact surface of the battery cell electrode 21 and the busbar 4 can be increased by arranging the layer of conductive paint on the surface of the battery cell electrode, so that the contact resistance can be reduced. For example, the conductive paint may be silver paste paint or copper silver paint, but is not limited thereto.
In another embodiment of the present invention, a battery pack is further provided, and the battery pack includes the above battery cell module.
In the embodiment of the present invention, the specific number of the battery pack including the battery cell modules is not limited, and the plurality of battery cell modules in the battery pack are controlled or managed by the battery management system and the thermal management system together.
According to the battery pack provided by the embodiment of the invention, through the arrangement of the battery module, when one battery cell in the battery cell module is in failure, the battery cell module is convenient to disassemble and replace, the utilization rate of the battery cell module is improved, and the conductive adhesive brings a buffering and damping effect for a connecting structure between the busbar and the battery cell electrode.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The battery cell module assembling method is characterized by comprising the following steps of:
arranging and placing a plurality of battery cores;
fixing the relative positions of the plurality of battery cells;
installing a busbar, wherein an electrode installation hole matched with the battery cell electrode is formed in the busbar, and after the busbar is installed, a dispensing gap is formed between the battery cell electrode and the busbar;
the mounting bus bar includes:
positioning the relative position between the busbar and the cell electrode to ensure that the dispensing gaps on the peripheral surfaces of the cell electrode are uniformly distributed;
nesting the electrode mounting hole on the cell electrode;
extruding the bus bar to enable the bus bar to be in close contact with the contact surface of the battery cell electrode;
one of the fixing plate and the bus bar is provided with a positioning hole, the other one of the fixing plate and the bus bar is provided with a positioning column, and the relative position between the bus bar and the battery cell electrode is positioned through the cooperation of the positioning hole and the positioning column;
filling conductive adhesive into the adhesive dispensing gap;
and cooling the conductive adhesive.
2. The method of claim 1, wherein prior to installing the buss bar, the method further comprises:
and spraying conductive paint on the surface of the battery cell electrode.
3. The battery cell module assembling method of claim 1, wherein a fixing plate is mounted on a side surface of the battery cell where the battery cell electrode is disposed to fix a relative position between the battery cells, and fixing holes matched with the battery cell electrode are arranged on the fixing plate.
4. The method of assembling a cell module according to claim 1, wherein a dispensing slot is further formed between the end surface of the cell electrode and the busbar after the busbar is mounted;
and filling the conductive adhesive into the adhesive dispensing gap further comprises filling the conductive adhesive into the adhesive dispensing groove, wherein the amount of the conductive adhesive is equal to the surface of the conductive adhesive and the surface of the bus bar.
5. A battery cell module, characterized in that the battery cell module is manufactured according to the method of assembling a battery cell module of claim 1.
6. The cell module according to claim 5, wherein the depth dimension of the electrode mounting hole is greater than the height dimension of the cell electrode and the mating portion thereof.
7. The battery cell module according to claim 5, wherein the surface of the cell electrode is provided with a layer of conductive paint.
8. A battery pack, characterized in that the battery pack comprises the battery cell module of any one of claims 5 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110929836.XA CN113644385B (en) | 2021-08-13 | 2021-08-13 | Battery cell module assembling method, battery cell module and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110929836.XA CN113644385B (en) | 2021-08-13 | 2021-08-13 | Battery cell module assembling method, battery cell module and battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113644385A CN113644385A (en) | 2021-11-12 |
| CN113644385B true CN113644385B (en) | 2023-01-31 |
Family
ID=78421422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110929836.XA Active CN113644385B (en) | 2021-08-13 | 2021-08-13 | Battery cell module assembling method, battery cell module and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113644385B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635099A (en) * | 2019-09-27 | 2019-12-31 | 瑞浦能源有限公司 | Utmost point post, connection piece and lithium ion battery module |
| EP3624220A1 (en) * | 2018-09-14 | 2020-03-18 | Contemporary Amperex Technology Co., Limited | Battery module, busbar and busbar assembly thereof |
| CN210723152U (en) * | 2019-11-05 | 2020-06-09 | 蜂巢能源科技有限公司 | Battery module, battery package and vehicle |
| CN210866334U (en) * | 2019-11-13 | 2020-06-26 | 欣旺达电动汽车电池有限公司 | Busbar, battery module, battery pack and electric vehicle |
| CN111900300A (en) * | 2020-08-18 | 2020-11-06 | 嘉兴模度新能源有限公司 | Battery module locked by deformation |
| CN213278318U (en) * | 2020-08-31 | 2021-05-25 | 蜂巢能源科技有限公司 | Battery module assembly and battery module |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7105081B2 (en) * | 2018-03-29 | 2022-07-22 | 三洋電機株式会社 | Assembled battery and secondary battery used therein |
| CN110544754A (en) * | 2019-08-15 | 2019-12-06 | 苏州市捷远动力科技有限公司 | Battery fixing and reinforcing structure based on binder |
| CN112803122B (en) * | 2021-01-29 | 2023-07-28 | 嘉兴模度新能源有限公司 | Battery module with locking mechanism, array type large module, battery pack and power supply |
-
2021
- 2021-08-13 CN CN202110929836.XA patent/CN113644385B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3624220A1 (en) * | 2018-09-14 | 2020-03-18 | Contemporary Amperex Technology Co., Limited | Battery module, busbar and busbar assembly thereof |
| CN110635099A (en) * | 2019-09-27 | 2019-12-31 | 瑞浦能源有限公司 | Utmost point post, connection piece and lithium ion battery module |
| CN210723152U (en) * | 2019-11-05 | 2020-06-09 | 蜂巢能源科技有限公司 | Battery module, battery package and vehicle |
| CN210866334U (en) * | 2019-11-13 | 2020-06-26 | 欣旺达电动汽车电池有限公司 | Busbar, battery module, battery pack and electric vehicle |
| CN111900300A (en) * | 2020-08-18 | 2020-11-06 | 嘉兴模度新能源有限公司 | Battery module locked by deformation |
| CN213278318U (en) * | 2020-08-31 | 2021-05-25 | 蜂巢能源科技有限公司 | Battery module assembly and battery module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113644385A (en) | 2021-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20220216536A1 (en) | Battery pack | |
| CN107452933B (en) | Soft packet of lithium cell module and insulating assemblies and power module | |
| KR102340419B1 (en) | Battery Module Having Module Bus-bar | |
| CN210349920U (en) | Soft packet of lithium cell module structure | |
| CN109904378B (en) | Lithium battery energy storage module and lithium battery energy storage module | |
| CN111933882A (en) | Battery system | |
| CN209472013U (en) | A kind of space-efficient high security battery modules | |
| CN110085787A (en) | A kind of Soft Roll modular structure | |
| CN210403868U (en) | Battery module and battery | |
| CN113644385B (en) | Battery cell module assembling method, battery cell module and battery pack | |
| CN114221079B (en) | Module support for cylindrical cell welding | |
| CN111354882A (en) | Lithium ion battery pack | |
| KR20200133050A (en) | Plate for connecting battery pack and method for manufacturing the plate | |
| CN114050368A (en) | Battery cell module support with high flatness and shock-absorbing function | |
| CN217239629U (en) | Be used for cylinder electricity core welded module support | |
| CN217158351U (en) | Laminate polymer battery module | |
| TWI768981B (en) | Battery assembly, battery module and method for manufacturing the battery assembly | |
| CN213459867U (en) | Aluminum sheet type double-row heat dissipation device of lithium ion battery module | |
| EP3783686B1 (en) | Battery module | |
| CN210897411U (en) | Battery module and battery pack | |
| CN209626299U (en) | A kind of lithium battery die set | |
| CN114976381A (en) | Battery module, assembling method and battery pack | |
| CN214848943U (en) | Battery module and vehicle | |
| CN220895699U (en) | Blade battery module | |
| CN115172968B (en) | Battery pack and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230609 Address after: Room 1803, Building 1, No. 500 Ruby Road, Changning District, Shanghai, 200336 Patentee after: Shanghai Lianzhisheng New Energy Technology Co.,Ltd. Address before: 200050 room 8050, 8 / F, 1033 Changning Road, Changning District, Shanghai Patentee before: Aopu (Shanghai) new energy Co.,Ltd. |
|
| TR01 | Transfer of patent right |