CN219163553U - Battery module and battery pack comprising same - Google Patents
Battery module and battery pack comprising same Download PDFInfo
- Publication number
- CN219163553U CN219163553U CN202320149389.0U CN202320149389U CN219163553U CN 219163553 U CN219163553 U CN 219163553U CN 202320149389 U CN202320149389 U CN 202320149389U CN 219163553 U CN219163553 U CN 219163553U
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- battery module
- plate
- fixing
- side plate
- hook
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- 239000012790 adhesive layer Substances 0.000 claims description 8
- 230000004308 accommodation Effects 0.000 claims description 4
- 238000003466 welding Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- 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
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Abstract
The utility model provides a battery module and a battery pack comprising the same. The battery module comprises a frame and a plurality of groups of battery cell stacks arranged in the frame, wherein the frame comprises end plates arranged along a first direction and side plates arranged along a second direction, the number of the end plates is two and is oppositely arranged, the number of the side plates is at least three and is arranged between the two end plates along a first direction at intervals, the two end plates and the two adjacent side plates form an accommodating space for accommodating the battery cell stacks, and two ends of at least one side plate are respectively connected with two end plate buckles arranged oppositely. According to the utility model, the two ends of at least one side plate are respectively connected with the two opposite end plates in a buckling way, so that the problem of connection between the side plate and the end plates is solved, the overall rigidity and strength of the battery module are improved, the expansion deformation of the battery module is reduced, and the assembly efficiency of the battery module is improved.
Description
Technical Field
The present disclosure relates to battery technology, and particularly to a battery module and a battery pack including the same.
Background
In the prior art, a battery pack frame of a square shell battery module is generally welded by adopting an end plate and a side plate, and for a double-row square shell battery module scheme, in order to improve the structural strength and rigidity, the expansion deformation of the battery module is reduced, the middle side plate is increased, and the middle side plate is connected with the end plate. The connection mode of the edge side plate, the middle side plate and the end plate is mostly a welding or contact lap joint mode.
Because the welding scheme can inevitably introduce the influence of particle welding slag caused by welding, the problem of product consistency is caused; meanwhile, the welding strength of a welding seam heat affected zone is generally lower than that of a base metal, so that the risk of frame cracking caused by insufficient welding strength exists. For the welding-free scheme, the end plate is too large in deformation under the expansion working condition of the battery module, and further the risks of bending and cracking other parts and extruding the battery pack frame are caused.
Therefore, how to solve the problem of connection between the side plate and the end plate, improve the overall rigidity and strength of the battery module, reduce the expansion deformation of the battery module, and improve the assembly efficiency is a technical problem to be solved in the art.
Disclosure of Invention
The utility model aims to overcome the defects that the welding mode of a side plate and an end plate in the prior art affects the integral rigidity and strength of a battery module and the expansion deformation of the battery module exists in a contact lap joint mode, and provides a battery module and a battery pack comprising the battery module.
The utility model solves the technical problems by the following technical scheme:
the utility model provides a battery module, its characterized in that, it includes the frame and sets up multiunit electric core stack body in the frame, the frame includes along first direction setting up the end plate and along the second direction setting up the curb plate, the quantity of end plate is two and sets up relatively, the quantity of curb plate is at least three and along first direction interval sets up in two between the end plate, two the end plate with two adjacent curb plate forms and is used for holding electric core stack body's accommodation space, wherein, at least one the both ends of curb plate respectively with two of relative setting up the end plate buckle is connected.
In this technical scheme, through setting up at least one the both ends of curb plate respectively with two of relative setting end plate buckle is connected, has solved the connection problem of curb plate and end plate, has improved battery module's overall rigidity and intensity, has reduced battery module's expansion deformation, has improved battery module's assembly efficiency.
Preferably, the end plates and the side plates are arranged vertically or substantially vertically; and/or the number of the groups of groups,
the side plates comprise two edge side plates and two middle side plates, at least one middle side plate is positioned between the two edge side plates, and two ends of the middle side plate are respectively connected with two end plates in a buckling manner;
when the number of the middle side plates is one, two end plates which are oppositely arranged, one of the edge side plates and the middle side plate are surrounded to form the accommodating space;
when the middle side plates are multiple, two edge end plates which are oppositely arranged form the accommodating space with one edge side plate and the middle side plate which is close to the edge side plate in a surrounding mode, and the two edge end plates which are oppositely arranged form the accommodating space with two adjacent middle side plates in a surrounding mode.
Preferably, a first fixing part is arranged on the middle side plate, a second fixing part is arranged on the end plate at a position corresponding to the first fixing part, and the first fixing part is in buckling connection with the second fixing part; or,
the end plate is provided with a first fixing part, a second fixing part is arranged on the middle side plate at a position corresponding to the first fixing part, and the first fixing part is in buckling connection with the second fixing part.
Preferably, the first fixing part is a hook, the second fixing part is a fixing groove, and the hook is in snap connection with the fixing groove.
Preferably, the fixing groove is provided with an opening for the hook to enter and exit, a limiting part is arranged in the fixing groove and close to the opening, and a hook part of the hook is abutted to the limiting part and used for limiting the hook to be separated from the fixing groove; and/or, the number of the groups,
the hook is one of an oblique angle hook, a right angle hook or an arc-shaped hook.
Preferably, the number of the first fixing parts and the number of the second fixing parts are multiple;
the plurality of the fixed parts and the plurality of the second fixed parts are arranged at intervals along the height direction.
Preferably, two ends of the edge side plate are respectively in snap connection with two end plates which are oppositely arranged;
the edge side plate is provided with a third fixing part, a fourth fixing part is arranged on the end plate at a position corresponding to the third fixing part, and the third fixing part is in buckling connection with the fourth fixing part; or,
the end plate is provided with a third fixing part, a fourth fixing part is arranged on the middle side plate at a position corresponding to the third fixing part, and the third fixing part is in buckling connection with the fourth fixing part.
Preferably, a plurality of through holes are formed in the end plate along the first direction, and the through holes are arranged at intervals along the height direction of the end plate.
Preferably, the battery module further comprises an adhesive layer, and the adhesive layer is located between the side plate and the cell stack body.
A battery pack, characterized in that the battery pack comprises the battery module as described above.
In this technical scheme, through setting up at least one the both ends of curb plate respectively with two of relative setting end plate buckle is connected, has solved the connection problem of curb plate and end plate, has improved the whole rigidity and the intensity of battery package, has reduced the expansion deformation of battery package, has improved the assembly efficiency of battery package.
The utility model has the positive progress effects that:
according to the utility model, the two ends of at least one side plate are respectively connected with the two opposite end plates in a buckling way, so that the problem of connection between the side plate and the end plates is solved, the overall rigidity and strength of the battery module and the battery pack are improved, the expansion deformation of the battery module and the battery pack is reduced, and the assembly efficiency of the battery module and the battery pack is improved.
Drawings
Fig. 1 is a schematic exploded perspective view of a battery module according to a preferred embodiment of the present utility model.
Fig. 2 is a schematic exploded perspective view of an end plate and a middle side plate of a battery module according to a preferred embodiment of the present utility model.
Fig. 3 is a partially enlarged schematic view of the portion C in fig. 2.
Fig. 4 is a schematic view showing a partially cut-away structure of an end plate and a middle side plate of a battery module according to a preferred embodiment of the present utility model.
Fig. 5 is a partially cross-sectional structural schematic view illustrating an assembly process of an end plate and an intermediate side plate of a battery module according to a preferred embodiment of the present utility model.
Description of the reference numerals
Through hole 111
Side plate 12
Fixing groove 13
Limiting part 132
Hook 14
Hook 141
First direction A
Second direction B
Detailed Description
The present utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments are shown.
The embodiment provides a battery module and a battery pack, wherein the battery pack can be directly installed on a vehicle (such as an electric automobile, an electric bicycle and the like) so as to provide a power source for the vehicle; the device can also be used for electric equipment such as various high-power electric appliances. It will be understood by those skilled in the art that "battery pack" herein refers to a generic term for batteries forming various forms of pack-like, box-like, column-like, etc., rather than single-finger pack-like batteries.
The battery pack comprises the battery module, and a battery management system, a battery thermal management system, a battery system distribution box, a flexible connection and electrical interface and the like can be arranged in the battery pack, wherein the thermal management system can comprise an evaporator, a fan, an air duct, a temperature acquisition mechanism and the like; for a single battery pack, one or more battery modules can be arranged in the battery pack, and the battery pack can be selected according to actual requirements. The following mainly describes the structure of the battery module in detail: as shown in fig. 1 to 4, a single battery module 1 includes a frame 10 and a plurality of groups of cell stacks 20 disposed within the frame 10.
The frame 10 includes an end plate 11 disposed along a first direction a and a side plate 12 disposed along a second direction B, the first direction a and the second direction B being disposed in different directions, an included angle being formed between the first direction a and the second direction B, and the included angle being 90 degrees. That is, the end plate 11 is disposed perpendicularly to the side plate 12. But is not limited thereto, in other embodiments the end plate 11 may be substantially perpendicular to the side plate 12. That is, the end plate 11 and the side plate 12 are disposed vertically or substantially vertically.
The number of the end plates 11 is two and oppositely arranged, the number of the side plates 12 is three and is arranged between the two end plates 11 at intervals along the first direction A, the two end plates 11 and the two adjacent side plates 12 form an accommodating space for accommodating the cell stack body 20, and two ends of at least one side plate 12 are respectively in buckling connection with the two oppositely arranged end plates 11. That is, one side plate 12 of three, two side plates 12 of three, or both ends of all side plates 12 are respectively snap-connected with two end plates 11 disposed opposite to each other may be adopted. Like this, through setting up the both ends of at least one curb plate 12 respectively with two end plates 11 buckle connection of relative setting, solved curb plate 12 and end plate 11 connection problem, improved battery module 1 overall rigidity and intensity, reduced battery module 1 expansion deformation, improved assembly efficiency.
In other embodiments, the number of the side plates 12 may be any value greater than three, and the three or more side plates 12 are disposed between the two end plates 11 at intervals along the first direction a, and the two end plates 11 and the two adjacent side plates 12 enclose an accommodating space for accommodating the cell stack 20. Two ends of at least one side plate 12 of the three or more side plates 12 are respectively in snap connection with two end plates 11 which are oppositely arranged. The side plates 12 are made of a metal material such as aluminum, aluminum alloy, or nickel-plated steel.
In the present embodiment, specifically, the side plates 12 include the edge side plates 121 and the intermediate side plates 122, the number of the edge side plates 121 being two, and the number of the intermediate side plates 122 being one. One middle side plate 122 is located between the two edge side plates 121, and two ends of the middle side plate 122 are respectively in snap connection with the two end plates 11 which are oppositely arranged. The two end plates 11 disposed opposite to each other form accommodation spaces with one of the edge side plates 121 and the middle side plate 122, thereby forming two accommodation spaces for accommodating the cell stack 20.
In other embodiments, the number of intermediate side plates 122 is plural, plural is two, and more than two. The two edge end plates 11 disposed opposite to each other and one of the edge side plates 121 and the middle side plate 122 adjacent to the edge side plate 121 enclose to form an accommodating space, and the two edge end plates 11 disposed opposite to each other and the two middle side plates 122 adjacent to each other enclose to form at least three (including three) accommodating spaces for accommodating the cell stack 20.
In this embodiment, the middle side plate 122 is provided with a first fixing portion, and the end plate 11 is provided with a second fixing portion at a position corresponding to the first fixing portion, and the first fixing portion is in snap connection with the second fixing portion. Specifically, the first fixing portions are provided at both ends of the intermediate side plate 122, respectively, and the second fixing portions are provided at a side of the end plate 11 facing the intermediate side plate 122, and are provided corresponding to the first fixing portions.
However, in other embodiments, the end plate 11 may be provided with a first fixing portion, and the intermediate side plate 122 may be provided with a second fixing portion at a position corresponding to the first fixing portion, and the first fixing portion may be connected to the second fixing portion by a snap fit.
Specifically, the first fixing portion is a hook 14, the second fixing portion is a fixing groove 13, and the hook 14 is in snap connection with the fixing groove 13. However, the present utility model is not limited to this, and the first fixing portion and the second fixing portion may be other structures that can be connected by snap-fit.
In this embodiment, the hooks 14 are right angle hooks. But is not limited thereto, in other embodiments, the hooks 14 may be beveled hooks or rounded hooks. The right-angle hook is arranged at right angles to the plane where the hook is fixed; the oblique angle hook means that the hook is arranged at an oblique angle with the plane where the hook is fixed. The arc-shaped hook means that the hook part of the hook is arc-shaped.
The middle side plate 122 is made by a sheet metal stamping process, and the hook 14 structure at the end of the middle side plate 122 is cut by machining.
The fixing groove 13 is provided with an opening 131 for the hook 14 to enter and exit, and a limiting part 132 is arranged in the fixing groove 13 and close to the opening 131, and a hook part 141 of the hook 14 is abutted against the limiting part 132 and used for limiting the hook 14 to be separated from the fixing groove 13. The hook portion 141 of the hook 14 is directed downward, but not limited thereto, and may be directed in other directions according to design requirements.
In this embodiment, the number of the first fixing portions and the second fixing portions is five; the five first fixing parts and the five second fixing parts are all arranged at intervals along the height direction H. However, in other embodiments, the number of the first fixing portions and the second fixing portions may be two, three, four, six, or a plurality of values, and the plurality of first fixing portions and the plurality of second fixing portions are all disposed at intervals along the height direction H.
In other embodiments, two ends of the edge side plate 121 may be respectively snapped to two end plates 11 disposed opposite to each other. The edge side plate 121 is provided with a third fixing portion, the end plate 11 is provided with a fourth fixing portion at a position corresponding to the third fixing portion, and the third fixing portion is in snap connection with the fourth fixing portion. Alternatively, in other embodiments, the end plate 11 is provided with a third fixing portion, and the intermediate side plate 122 is provided with a fourth fixing portion at a position corresponding to the third fixing portion, and the third fixing portion is connected to the fourth fixing portion by a snap fit. Likewise, the third fixing part can be a hook, the fourth fixing part can be a fixing groove, and the hook is in buckle connection in the fixing groove. However, the third fixing portion and the fourth fixing portion are not limited to this, and may be other structures that can be snap-connected.
In the present embodiment, a plurality of through holes 111 are provided in the end plate 11 in the first direction a, and the plurality of through holes 111 are provided at intervals in the height direction H of the end plate 11. By providing the through-hole 111 in the end plate 11, the weight of the end plate 11 itself can be greatly reduced while maintaining the strength of the end plate 11. The end plate 11 is integrally extruded, and the inner wall of the end plate 11 is cut and hollowed to form a through hole 111. The fixing groove 13 is formed in a side wall of the end plate 11 (an opening 131 of the fixing groove 13 is formed in the side wall of the end plate 11), and an inner wall of the fixing groove 13 overlaps with a part of an inner wall of the through hole 111.
The battery module 1 further includes an adhesive layer 15, and the adhesive layer 15 is located between the side plate 12 and the cell stack 20. By providing an adhesive layer 15, the cell stack 20 is better secured in the receiving space.
The assembly steps of the battery module 1 of the present embodiment are as follows:
1) The hook 14 at one end of the middle side plate 122 is assembled with the fixing groove 13 of one of the end plates 11, the structure of the assembling process is shown in fig. 5, and the structure of the assembled hook 14 and fixing groove 13 is shown in fig. 4;
2) Sequentially fixing the cell stack body 20 and the middle side plate 122 together through the adhesive layer 15, and stacking and assembling;
3) The fixing groove 13 of the other end plate 11 is fitted with the hook 14 of the other end of the intermediate side plate 122.
It should be noted that the following ways may be used for the engagement of the hooks 14 of the middle side plate 122 with the fixing grooves 13 of the end plate 11: 1. assembling from top to bottom; 2. assembling from bottom to top.
According to the embodiment, the two ends of the at least one side plate 12 are respectively connected with the two opposite end plates 11 in a buckling manner, so that the problem that the side plates 12 are connected with the end plates 11 is solved, the overall rigidity and strength of the battery module 1 and the battery pack are improved, the expansion deformation of the battery module 1 and the battery pack is reduced, and the assembly efficiency of the battery module 1 and the battery pack is improved.
While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the utility model, but such changes and modifications fall within the scope of the utility model.
Claims (10)
1. The utility model provides a battery module, its characterized in that includes the frame and sets up multiunit electric core stack body in the frame, the frame includes along first direction setting up the end plate and along the second direction setting up the curb plate, the quantity of end plate is two and sets up relatively, the quantity of curb plate is at least three and along first direction interval sets up in two between the end plate, two end plate and adjacent two the curb plate forms and is used for holding electric core stack body's accommodation space, wherein, at least one the both ends of curb plate respectively with two of relative setting up the end plate buckle is connected.
2. The battery module of claim 1, wherein the end plate and the side plate are disposed vertically or substantially vertically; and/or the number of the groups of groups,
the side plates comprise two edge side plates and two middle side plates, at least one middle side plate is positioned between the two edge side plates, and two ends of the middle side plate are respectively connected with two end plates in a buckling manner;
when the number of the middle side plates is one, two end plates which are oppositely arranged, one of the edge side plates and the middle side plate are surrounded to form the accommodating space;
when the middle side plates are multiple, two edge end plates which are oppositely arranged form the accommodating space with one edge side plate and the middle side plate which is close to the edge side plate in a surrounding mode, and the two edge end plates which are oppositely arranged form the accommodating space with two adjacent middle side plates in a surrounding mode.
3. The battery module according to claim 2, wherein a first fixing portion is provided on the intermediate side plate, a second fixing portion is provided on the end plate at a position corresponding to the first fixing portion, and the first fixing portion is snap-coupled with the second fixing portion; or,
the end plate is provided with a first fixing part, a second fixing part is arranged on the middle side plate at a position corresponding to the first fixing part, and the first fixing part is in buckling connection with the second fixing part.
4. The battery module of claim 3, wherein the first fixing portion is a hook, the second fixing portion is a fixing groove, and the hook is snap-connected in the fixing groove.
5. The battery module according to claim 4, wherein the fixing groove is provided with an opening for the hook to enter and exit, a limiting part is arranged in the fixing groove at a position close to the opening, and a hook part of the hook is abutted against the limiting part and used for limiting the hook to be separated from the fixing groove; and/or, the number of the groups,
the hook is one of an oblique angle hook, a right angle hook or an arc-shaped hook.
6. The battery module according to claim 3, wherein the number of the first fixing portions and the number of the second fixing portions are plural;
the plurality of the fixed parts and the plurality of the second fixed parts are arranged at intervals along the height direction.
7. The battery module according to claim 2, wherein both ends of the edge side plate are respectively snap-connected with two of the end plates disposed opposite to each other;
the edge side plate is provided with a third fixing part, a fourth fixing part is arranged on the end plate at a position corresponding to the third fixing part, and the third fixing part is in buckling connection with the fourth fixing part; or,
the end plate is provided with a third fixing part, a fourth fixing part is arranged on the middle side plate at a position corresponding to the third fixing part, and the third fixing part is in buckling connection with the fourth fixing part.
8. The battery module according to claim 1, wherein a plurality of through holes are provided in the end plate in the first direction, and the plurality of through holes are provided at intervals in the height direction of the end plate.
9. The battery module of any one of claims 1-8, further comprising an adhesive layer between the side plates and the cell stack.
10. A battery pack, characterized in that the battery pack comprises the battery module according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320149389.0U CN219163553U (en) | 2023-02-03 | 2023-02-03 | Battery module and battery pack comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320149389.0U CN219163553U (en) | 2023-02-03 | 2023-02-03 | Battery module and battery pack comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219163553U true CN219163553U (en) | 2023-06-09 |
Family
ID=86641668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320149389.0U Active CN219163553U (en) | 2023-02-03 | 2023-02-03 | Battery module and battery pack comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219163553U (en) |
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2023
- 2023-02-03 CN CN202320149389.0U patent/CN219163553U/en active Active
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