CN219226520U - Protective cover structure of battery module - Google Patents

Protective cover structure of battery module Download PDF

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Publication number
CN219226520U
CN219226520U CN202320022660.4U CN202320022660U CN219226520U CN 219226520 U CN219226520 U CN 219226520U CN 202320022660 U CN202320022660 U CN 202320022660U CN 219226520 U CN219226520 U CN 219226520U
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China
Prior art keywords
battery module
cover body
circuit board
cover structure
structure according
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CN202320022660.4U
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Chinese (zh)
Inventor
卢臣智
陈文聪
冯雪明
何俊忠
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Chuneng New Energy Co Ltd
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Chuneng New Energy Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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Abstract

The utility model provides a protective cover structure of a battery module, which comprises the battery module, a collecting circuit board and a cover body, wherein the collecting circuit board is arranged on the end face of one side of a pole of the battery module, and a plurality of avoidance holes, the positions of which correspond to the explosion-proof valve positions of the battery module, are formed in one side of the collecting circuit board, which is close to the battery module; the cover body is arranged at one side of the acquisition circuit board, which is far away from the battery module; one side that the lid is close to battery module is provided with a plurality of bellying, and the position of bellying is corresponding with the position of dodging the hole, and bellying joint is dodging the inside in hole, fixes the lid on collecting circuit board, dodges the hole through setting up a plurality of bellying that set up on the lid and originally seting up on the collecting circuit board and carry out interference fit, can make the stable installation of lid on battery module, and assembly process is simple, and junction intensity is reliable and stable, can not take place the condition of fracture inefficacy in the installation to the installation of battery module is used conveniently.

Description

Protective cover structure of battery module
Technical Field
The utility model relates to the technical field of new energy lithium batteries, in particular to a protective cover structure of a battery module.
Background
At present, under the support of the country and the advantage of the market, the power lithium battery industry is developed very rapidly, the application of the power lithium battery industry is expanded to the fields of electric buses, electric cars, micro buses, energy storage and the like, and the battery module is used as an important working component in the battery, so that the working environment of the battery module is required to be ensured from the aspect of aspects, and the power lithium battery fully plays the key of the function.
The Chinese patent with publication number of CN213816351U discloses an energy storage battery module structure, which comprises a metal end plate, an electric core, a wire bundle integrated plate, a busbar, a cover body, an acquisition wire bundle and a packing belt, wherein the cover body is made of insulating plastic, round holes are distributed in the cover body, and the cover body and the total integrated plate are riveted and fixed through plastic rivets.
The cover body and the main integrated board in the prior art are riveted and fixed through plastic rivets, corresponding positioning holes are required to be formed in the cover body and the main integrated board in the mode, the rivets are driven into the positioning holes during installation, the process is very complicated, and the connecting part is easy to break and lose efficacy during the installation process, so that the battery module is inconvenient to install and use.
Disclosure of Invention
In view of the above, the utility model provides a protective cover structure of a battery module, which has simple assembly process, stable and reliable strength of the joint, and no fracture failure in the installation process, thereby being convenient for the installation and use of the battery module.
The technical scheme of the utility model is realized as follows: the utility model provides a protective cover structure of a battery module, which comprises a battery module, a collection circuit board and a cover body, wherein,
the acquisition circuit board is arranged on the end face of the battery module, which is provided with a pole, and is used for acquiring information of the battery module, and a plurality of avoidance holes, the positions of which correspond to the explosion-proof valve positions of the battery module, are formed in one side, close to the battery module, of the acquisition circuit board;
the cover body is arranged on one side, far away from the battery module, of the acquisition circuit board and is used for protecting the acquisition circuit board;
the battery module is characterized in that a plurality of protruding portions are arranged on one side, close to the battery module, of the cover body, the protruding portions correspond to the positions of the avoidance holes, and are clamped in the avoidance holes, so that the cover body is fixed on the acquisition circuit board.
On the basis of the above technical scheme, preferably, the plurality of protruding portions are located at the center line position in the width direction of the cover body, and the plurality of protruding portions are arranged in sequence at equal intervals along the length direction of the cover body.
On the basis of the technical scheme, preferably, the outer contour shape of the protruding portion is matched with the inner contour shape of the avoidance hole.
On the basis of the technical scheme, the battery pack is characterized by further comprising two protection pieces, wherein the two protection pieces are arranged on two sides of the cover body along the length direction of the battery pack and used for preventing other metal parts from being in contact short circuit with the anode and the cathode in the assembly process.
On the basis of the above technical solution, preferably, each of the guard members includes a vertical portion and a horizontal portion, wherein,
the vertical part is arranged on one side of the cover body along the length direction of the battery module, and the vertical part is vertically arranged towards one side far away from the battery module;
the horizontal part is arranged on one side of the vertical part far away from the cover body, and the horizontal part is horizontally arranged on one side of the vertical part far away from the cover body.
On the basis of the above technical scheme, preferably, the length of the horizontal part is longer than the distance that the positive and negative electrode connectors of the battery module extend out of the battery module.
On the basis of the above technical scheme, preferably, one side, away from the battery module, of the two protection pieces is respectively provided with positive and negative electrode identifiers, and the positive and negative electrode identifiers are respectively and correspondingly arranged with positive and negative electrode connectors of the battery module.
On the basis of the above technical scheme, preferably, the cover body is provided with bending parts along two sides of the length direction, the bending parts face one side of the battery module vertically, gaps are formed between the bending parts and the outer surfaces of the battery module, and an adhesive layer is arranged in the gaps.
On the basis of the technical scheme, the thickness of the cover body is preferably 0.5mm.
On the basis of the technical scheme, preferably, the acquisition circuit board is made of epoxy resin.
Compared with the prior art, the battery module protective cover structure has the following beneficial effects:
(1) The plurality of protruding parts arranged on the cover body are in interference fit with the avoidance holes originally formed in the acquisition circuit board, so that the cover body can be stably installed on the battery module, the assembly process is simple, the strength of the connecting part is stable and reliable, the situation of fracture failure can not occur in the installation process, and the battery module is convenient to install and use;
(2) The protection piece covers the upper parts of the anode and the cathode of the battery module, so that the short circuit caused by the lap joint of the anode bus bar and the cathode bus bar and the metal conductor in the assembly and use process of the battery module is prevented;
(3) Through the bending part and the inside adhesive linkage that is provided with of bending part that both sides set up around the lid cooperation, can increase the installation stability between lid and the battery module to the mounting means is lighter, and the cost is lower.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a perspective view of a protective cover structure of a battery module according to the present utility model;
fig. 2 is an exploded view of a protective cover structure of a battery module according to the present utility model;
fig. 3 is a perspective view of a cover body of the protective cover structure of the battery module according to the present utility model;
fig. 4 is a front view of the protective cover structure of the battery module according to the present utility model;
fig. 5 is a sectional view of the battery module protective cover structure of the present utility model taken at A-A in fig. 4.
Detailed Description
The following description of the embodiments of the present utility model will clearly and fully describe the technical aspects of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.
As shown in fig. 1-5, the protective cover structure of a battery module of the present utility model comprises a battery module 1, a collecting circuit board 2 and a cover 3, wherein the collecting circuit board 2 is disposed on an end surface of the battery module 1 having a pole for collecting information of the battery module 1, a plurality of avoidance holes 200 are formed on a side of the collecting circuit board 2 close to the battery module 1, the positions of the avoidance holes correspond to positions of explosion-proof valves of the battery module 1, and the cover 3 is disposed on a side of the collecting circuit board 2 far from the battery module 1 for protecting the collecting circuit board 2.
It should be noted that, the battery module 1 includes a plurality of single cells sequentially arranged along the length direction thereof, each single cell is provided with an explosion-proof valve on one side with a pole, the explosion-proof valve of the single cell is disposed between two poles and is located at the center of the single cell, and the current acquisition circuit board 2 is provided with corresponding avoidance holes 200 at the explosion-proof valve of the single cell to play a role of yielding the explosion-proof valve; the utility model provides a battery cell, including battery module 1, collection circuit board 2, battery module 1, collecting circuit board 2, collecting circuit board, bus bar, collecting circuit board 2, collecting circuit board, battery module and car, still the welding has the busbar between the utmost point post of monomer battery cell, collecting circuit board 2 is kept away from one side of battery module 1 and still is provided with hot pressing membrane, the mounting hole corresponding with the busbar position has still been seted up on the surface of hot pressing membrane, with hot pressing membrane hot pressing at aluminium bar and the surface of collecting circuit board 2, make it form a whole, make things convenient for busbar and post welding, as a plastic uptake shell of publication number CN215220934U, CCS subassembly, battery module and car, it is disclosed that body mid portion is equipped with a plurality of third holes, be suitable for holding electric core explosion-proof valve, the gaseous discharge after the electric core thermal runaway of being convenient for, reduce the risk, this is prior art, do not make too much here.
Specifically, the material of the acquisition circuit board 2 in this embodiment is epoxy resin.
One side of the cover body 3, which is close to the battery module 1, is provided with a plurality of protruding portions 31, the positions of the protruding portions 31 correspond to the positions of the avoidance holes 200, the protruding portions 31 are clamped in the avoidance holes 200, and the cover body 3 is fixed on the acquisition circuit board 2.
Wherein the outer contour shape of the boss 31 matches the inner contour shape of the relief hole 200.
Specifically, the cover body 3 in this embodiment is made of PC material with a thickness of 0.5mm, and is formed by suction molding, so that the cover body 3 is lighter and has low production cost.
It should be noted that, the size of the protruding portion 31 is slightly larger than the size of the avoiding hole 200, when the device is mounted on the collecting circuit board 2, the positions of the protruding portions 31 and the positions of the avoiding holes 200 below are aligned, and then the device is pressed downwards, because the protruding portion 31 is thinner, the protruding portion 31 can be elastically deformed, when the protruding portion 31 is completely contacted with the inner side of the avoiding hole 200, a certain extrusion force is generated between the protruding portion 31 and the inner side of the avoiding hole 200, and then the cover body 3 is fixed on the collecting circuit board 2.
It can be understood that, because the busbar is directly welded on the post, a certain gap exists between the single battery core and the acquisition circuit board 2, so that the protruding part 31 of the cover body 3 is clamped in the avoidance hole 200 in an interference fit manner, and the normal exhaust of the explosion-proof valve is not influenced.
As a preferred embodiment, the plurality of protruding portions 31 are located at the center line position in the width direction of the cover 3, and the plurality of protruding portions 31 are sequentially arranged at equal intervals along the length direction of the cover 3.
The number of the protruding portions 31 in this embodiment is preferably four, the four protruding portions 31 are arranged at equal intervals along the length direction of the cover body 3, and the positions of the protruding portions 31 respectively correspond to the positions of the avoiding holes 200 right below, and when the cover is mounted, the cover body 3 can be mounted on the collection circuit board 2 more stably through the four protruding portions 31 distributed at equal intervals, so that the cover body 3 is prevented from falling off.
In order to prevent the battery module 1 from being exposed to the outside of the anode and the cathode to cause short circuit when being assembled, two protection pieces 4 are further arranged, wherein the two protection pieces 4 are arranged on two sides of the cover body 3 along the length direction of the battery module 1.
As a preferred embodiment, each of the protection pieces 4 in the present embodiment includes a vertical portion 41 and a horizontal portion 42, wherein the vertical portion 41 is provided at one side of the cover 3 in the length direction of the battery module 1, and the vertical portion 41 is vertically provided toward the side remote from the battery module 1; the horizontal portion 42 is provided on a side of the vertical portion 41 away from the cover 3, and the horizontal portion 42 is horizontally provided toward a side away from the cover 3.
Wherein, the length of the horizontal part 42 is greater than the distance that the positive and negative electrode tabs of the battery module 1 extend out of the battery module 1.
It should be noted that, the shape of the protection piece 4 is L-shaped, the protection piece 4 and the cover 3 are in an integrated structure, the protection piece 4 is formed by stamping, the protection piece 4 covers the positive and negative poles of the battery module 1, and the short circuit caused by overlapping of the positive and negative buses and the metal conductors in the assembly and use process of the battery module 1 is prevented.
In addition, the two protection pieces 4 are respectively provided with an anode and cathode mark 5 on one side far away from the battery module 1, and the anode and cathode marks 5 are respectively arranged corresponding to the anode and cathode joints of the battery module 1.
The positive and negative electrode marks 5 are formed by a plastic suction process.
As a preferred embodiment, the cover 3 is provided with the bending parts 32 on both sides in the longitudinal direction, the bending parts 32 are vertically arranged toward one side of the battery module 1, a gap is formed between the bending parts 32 and the outer surface of the battery module 1, and the adhesive layer 6 is arranged in the gap.
Specifically, the adhesive layer 6 in this embodiment is a double sided tape, and since the two sides of the double sided tape are both adhesive surfaces, and the surface of the adhesive surface on one side is adhered with a protective film, the protective film needs to be torn off and then adhered when in use, which is the conventional technology, and the length of the adhesive layer 6 is equal to the length of the bending portion 32.
It should be noted that, the bending portion 32 and the cover 3 are in an integrally formed structure, and the adhesive layer 6 is used for adhering and fixing the cover 3 and the side surface of the battery module 1, so that the connection strength of the mode of interference fit and adhesion between the protruding portion 31 and the avoiding hole 200 is reliable, and the cover 3 is ensured not to fall off in working conditions such as vibration and mechanical impact.
In this embodiment, the thickness of the adhesive layer 6 is 0.05mm.
Working principle:
during installation, the cover body 3 is firstly placed above the battery module, the positions of the four protruding parts 31 are aligned with the corresponding avoidance holes 200 below the four protruding parts, then the four protruding parts 31 are pressed downwards, the protruding parts 31 are thinner, elastic deformation can occur to the protruding parts 31, when the protruding parts 31 are completely contacted with the inner sides of the avoidance holes 200, certain extrusion force can be generated between the protruding parts 31 and the inner sides of the avoidance holes, the cover body 3 is further fixed on the acquisition circuit board 2, at the moment, the bending parts 32 are respectively positioned on the front side and the rear side of the battery module 1, the bonding layer 6 is attached to the surface of the battery module 1, the protective film of the bonding layer 6 is torn, the bonding surface of the other side of the bonding layer 6 is exposed and is contacted with the battery module 1, and then the bending parts 32 are pressed towards the direction of one side of the battery module 1, so that the cover body 3 is bonded and the battery module 1.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (10)

1. A protective cover structure of a battery module comprises a battery module (1), a collection circuit board (2) and a cover body (3), wherein,
the acquisition circuit board (2) is arranged on the end face of the battery module (1) on the side with the pole and is used for acquiring information of the battery module (1), and a plurality of avoidance holes (200) with positions corresponding to the positions of all explosion-proof valves of the battery module (1) are formed in the side, close to the battery module (1), of the acquisition circuit board (2);
the cover body (3) is arranged on one side, far away from the battery module (1), of the acquisition circuit board (2) and is used for protecting the acquisition circuit board (2);
the method is characterized in that: the battery pack is characterized in that a plurality of protruding portions (31) are arranged on one side, close to the battery module (1), of the cover body (3), the protruding portions (31) correspond to the avoiding holes (200), the protruding portions (31) are clamped inside the avoiding holes (200), and the cover body (3) is fixed to the collecting circuit board (2).
2. The battery module protection cover structure according to claim 1, wherein: the protruding portions (31) are located at the center line of the cover body (3) in the width direction, and the protruding portions (31) are arranged in sequence at equal intervals along the length direction of the cover body (3).
3. The battery module protection cover structure according to claim 1, wherein: the outer contour shape of the bulge (31) is matched with the inner contour shape of the avoidance hole (200).
4. The battery module protection cover structure according to claim 1, wherein: the battery pack further comprises two protection pieces (4), wherein the two protection pieces (4) are arranged on two sides of the cover body (3) along the length direction of the battery module (1) and used for preventing other metal parts from being in contact short circuit with the anode and the cathode in the assembly process.
5. The battery module protection cover structure according to claim 4, wherein: each of the guards (4) comprises a vertical portion (41) and a horizontal portion (42), wherein,
the vertical part (41) is arranged on one side of the cover body (3) along the length direction of the battery module (1), and the vertical part (41) is vertically arranged towards one side far away from the battery module (1);
the horizontal part (42) is arranged on one side, far away from the cover body (3), of the vertical part (41), and the horizontal part (42) is horizontally arranged towards one side, far away from the cover body (3).
6. The battery module protection cover structure according to claim 5, wherein: the length of the horizontal part (42) is longer than the distance that the positive and negative electrode connectors of the battery module (1) extend out of the battery module (1).
7. The battery module protection cover structure according to claim 4, wherein: one side of the two protection pieces (4) far away from the battery module (1) is respectively provided with an anode and cathode mark (5), and the anode and cathode marks (5) are respectively and correspondingly arranged with anode and cathode joints of the battery module (1).
8. The battery module protection cover structure according to claim 1, wherein: the battery pack comprises a battery module (1), and is characterized in that bending parts (32) are arranged on two sides of the cover body (3) along the length direction, the bending parts (32) face one side of the battery module (1) vertically, gaps are formed between the bending parts (32) and the outer surfaces of the battery module (1), and an adhesive layer (6) is arranged in the gaps.
9. The battery module protection cover structure according to claim 1, wherein: the thickness of the cover body (3) is 0.5mm.
10. The battery module protection cover structure according to claim 1, wherein: the acquisition circuit board (2) is made of epoxy resin.
CN202320022660.4U 2023-01-05 2023-01-05 Protective cover structure of battery module Active CN219226520U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320022660.4U CN219226520U (en) 2023-01-05 2023-01-05 Protective cover structure of battery module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320022660.4U CN219226520U (en) 2023-01-05 2023-01-05 Protective cover structure of battery module

Publications (1)

Publication Number Publication Date
CN219226520U true CN219226520U (en) 2023-06-20

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CN202320022660.4U Active CN219226520U (en) 2023-01-05 2023-01-05 Protective cover structure of battery module

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116960579A (en) * 2023-09-18 2023-10-27 厦门海辰储能科技股份有限公司 Battery module and electric equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116960579A (en) * 2023-09-18 2023-10-27 厦门海辰储能科技股份有限公司 Battery module and electric equipment
CN116960579B (en) * 2023-09-18 2024-01-26 厦门海辰储能科技股份有限公司 Battery module and electric equipment

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