CN219779079U - Battery box and battery pack - Google Patents
Battery box and battery pack Download PDFInfo
- Publication number
- CN219779079U CN219779079U CN202321121072.2U CN202321121072U CN219779079U CN 219779079 U CN219779079 U CN 219779079U CN 202321121072 U CN202321121072 U CN 202321121072U CN 219779079 U CN219779079 U CN 219779079U
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- Prior art keywords
- extending direction
- battery
- battery box
- battery compartment
- convex part
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- 238000010030 laminating Methods 0.000 claims abstract description 9
- 230000006978 adaptation Effects 0.000 claims abstract description 4
- 238000005452 bending Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000003466 welding Methods 0.000 abstract description 3
- 238000009778 extrusion testing Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 description 4
- 238000004512 die casting Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a battery box and a battery pack, wherein the battery box comprises: the first roof beam and second roof beam, the laminating of one end of first roof beam and one end of second roof beam set up, and one end of first roof beam laminating second roof beam is equipped with the convex part, and the holding chamber has been seted up along the extending direction of second roof beam to one end of second roof beam laminating first roof beam to form the recess with convex part looks adaptation, convex part and recess grafting are connected. Compared with the welding and splicing structure in the prior art, the first beam and the second beam of the battery box body are connected in a plugging manner, and the groove is formed in the accommodating cavity at one end part of the second beam along the extending direction of the second beam, so that the connection of the first beam and the second beam is carried out along the extending direction of the second beam, the connection of the first beam and the second beam is firmer, and even if the connection is extruded and collided, the connection failure of the connection position of the first beam and the second beam is difficult, thereby ensuring the structural strength and the structural stability of the battery box body, and ensuring that the battery pack is not easy to deform or fail in the process of side collision or side extrusion test.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery box and a battery pack.
Background
With the development and progress of technology, electric vehicles are increasingly used. A battery pack is provided in an electric vehicle for storing electric energy and supplying the electric vehicle with energy. The battery pack generally includes a battery case and a battery module provided in the battery case, the battery case providing support and protection for the battery module.
The battery box body comprises an outer frame with a splicing structure, the outer frame comprises two first beams which are arranged at intervals relatively and two second beams which are arranged at intervals relatively, and the ends of the first beams, the second beams, the first beams and the second beams are sequentially welded and connected to form the outer frame. However, the welded joint has a defect of low strength, and the welded joint of the first and second beams is easily failed in connection when the side extrusion or side collision test is performed on the battery pack, thereby resulting in poor structural stability of the battery case.
Disclosure of Invention
In order to solve the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a battery case with high structural strength and structural stability.
In order to solve the above-mentioned drawbacks of the prior art, a second object of the present utility model is to provide a battery pack that can better withstand a side crush or a side impact test.
According to one of the purposes of the utility model, the technical scheme is as follows:
a battery case, comprising: the first roof beam and second roof beam, the laminating of one end of first roof beam and one end of second roof beam set up, and one end of first roof beam laminating second roof beam is equipped with the convex part, and the holding chamber has been seted up along the extending direction of second roof beam to one end of second roof beam laminating first roof beam to form the recess with convex part looks adaptation, convex part and recess grafting are connected.
Compared with the welding and splicing structure in the prior art, the first beam and the second beam of the battery box body are connected in a plugging manner, and the groove is formed in the accommodating cavity at one end part of the second beam along the extending direction of the second beam, so that the connection of the first beam and the second beam is carried out along the extending direction of the second beam, the connection of the first beam and the second beam is firmer, and even if the connection is extruded and collided, the connection failure of the plugging position of the first beam and the second beam is difficult, thereby ensuring the structural strength and the structural stability of the battery box body.
The technical scheme provided by the second purpose of the utility model is as follows:
a battery pack comprises the battery box body.
Because the battery box body has higher intensity, the intensity of the battery pack is improved, and the battery pack is not easy to deform or lose efficacy in connection when side collision or side extrusion test is carried out.
Drawings
FIG. 1 is a top view of a battery case in an embodiment;
FIG. 2 is an exploded view of an outer frame in an embodiment;
fig. 3 is an enlarged view at a in fig. 2.
Wherein the reference numerals have the following meanings:
1. a first beam; 11. a first beam; 12. a second first beam; 13. a bending part; 2. a second beam; 21. a first second beam; 22. a second beam; 23. a body; 24. edge beams; 3. a convex portion; 4. a groove.
Detailed Description
For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.
In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
The embodiment provides a battery box, referring to fig. 1, the battery box includes a bottom plate and an outer frame, and the bottom plate is disposed at the bottom of the outer frame. The outer frame comprises a first beam 1 and a second beam 2, one end part of the first beam 1 is attached to one end part of the second beam 2, and two end parts of the first beam 1 attached to the second beam 2 are connected in an inserting mode. Compared with the structure of welding and splicing the outer frame in the prior art, the first beam 1 and the second beam 2 of the battery box body are connected in an inserting mode, so that the connection between the first beam 1 and the second beam 2 is firmer, and even if the first beam 1 and the second beam are extruded and collided, the connecting position of the first beam 1 and the second beam is not easy to be connected and lose efficacy, and therefore the structural strength and the structural stability of the battery box body are guaranteed.
Further, a protruding portion 3 is provided at one end portion of the first beam 1 attached to the second beam 2, a receiving cavity is provided at one end portion of the second beam 2 attached to the first beam along an extending direction thereof, so as to form a groove 4 adapted to the protruding portion 3, and the protruding portion 3 is in plug connection with the groove 4, so that the first beam 1 is in plug connection with the second beam 2. The first beam 1 and the second beam 2 of the battery box body of the embodiment are connected in a plugging manner, and the groove 4 is formed in the accommodating cavity at one end part of the second beam 2 along the extending direction of the second beam 2, so that the connection of the first beam 1 and the second beam 2 is performed along the extending direction of the second beam 2, the connection of the first beam 1 and the second beam 2 is firmer, and even if the connection is extruded and collided, the plugging position of the first beam 1 and the second beam 2 is not easy to be connected and fail, thereby ensuring the structural strength and the structural stability of the battery box body.
Specifically, referring to fig. 2, the first beam 1 includes a first beam 11 and a second beam 12 that are disposed at opposite intervals, and the second beam 2 includes a first beam 21 and a second beam 22 that are disposed at opposite intervals, and the first beam 11, the second beam 21, the second beam 12, and the second beam 22 are sequentially connected in an end-to-end plug connection to form an outer frame of the battery case. From this, the both ends of the second roof beam 21 and the second roof beam 22 of the battery box of this embodiment all respectively with first roof beam 11 and second roof beam 12 of first roof beam of first and second respectively through the cooperation grafting connection of convex part 3 with recess 4 to the lateral part junction of battery box is more firm, can bear extrusion, collision, and then has improved the structural strength and the structural stability of battery box.
Referring to fig. 3, an end portion of the first beam 1 connected with the second beam 2 extends towards the second beam 2 to form a bending portion 13, the protruding portion 3 is arranged at one end of the bending portion 13 close to the second beam 2, and the extending direction of the protruding portion 3 is the same as that of the second beam 2, so that the plugging direction of the protruding portion 3 and the groove 4 is further ensured to be along the extending direction of the second beam 2, and the connection between the first beam 1 and the second beam 2 is more stable.
Further, the convex portion 3 of the present embodiment has a hollow structure in the inside, thereby reducing the weight of the battery case.
In addition, the first beam 1, i.e. the first beam 11 and the second first beam 12 in this embodiment are die castings, which is favorable to improving the structural strength of the battery box and reducing the risk of the battery box being deformed by extrusion. The second beams 2, i.e., the first second beam 21 and the second beam 22 in this embodiment are extruded profiles, and have the characteristic of light weight, and can further reduce the weight of the battery box.
On this basis, the second beam 2, namely the first second beam 21 and the second beam 22, are provided with cavities which are communicated along the extending direction of the second beam, and the grooves 4 are arranged in the cavities and are positioned at the ends of the first second beam 21 and the second beam 22, which are close to the first beam 11 and the second first beam 12. Therefore, the groove 4 is matched and inserted with the convex part 3, and simultaneously, the weight of the first second beam 21 and the second beam 22 is reduced, so that the weight of the battery box body is further reduced.
Still further, referring to fig. 3, the second beam 2 includes a body 23 and a side beam 24 having the same extending direction as the second beam 2, the body 23 is provided with a cavity penetrating along the extending direction, and the groove 4 is provided in the cavity of the body 23 near one end of the first beam 1, so that the body 23 is in plug connection with the first beam 1, and the side beam 24 is provided on one side of the body 23 far from the battery box. That is, the first and second beams 21 and 22 each include a body 23 and a side beam 24, two end portions of the body 23 of the first and second beams 21 and 22 are respectively attached to corresponding end portions of the first and second beams 11 and 12, the body 23 of the first and second beams 21 and 22 is provided with a cavity penetrating along an extending direction thereof, and the grooves 4 are formed in the corresponding end portions so that the body 23 of the first and second beams 21 and 22 are in plug-in connection with the corresponding convex portions 3 of the first and second beams 11 and 12. On this basis, the area surrounded by the outer frame is taken as the inside of the battery box, correspondingly, the outside of the battery box which is not in the area surrounded by the outer frame is provided, and the side beams 24 of the first and second beams 21 and 22 are respectively attached to the outer side part of the body 23. The provision of the side rail 24 is advantageous in improving the structural strength of the battery case.
In order to further reduce the weight of the battery case, the side rail 24 of the present embodiment is provided with a through hole penetrating along the extending direction thereof.
In addition to the battery case, the embodiment also provides a battery pack, which comprises a battery module and the battery case, wherein the battery module is arranged in the battery case. The battery box body has the characteristic of light weight, so that the weight of the battery pack is reduced, and the quality energy density of the battery pack is improved. And because the side structural strength of the battery box body is improved, the front end and the rear end have higher structural strength due to the adoption of die castings, the battery pack is not easy to deform or lose connection when being subjected to front-rear extrusion and/or side collision test, namely the overall structural strength of the battery pack is improved.
The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.
Claims (10)
1. A battery box, comprising: the first beam and the second beam, one end of the first beam with one end laminating of second beam sets up, first beam laminating the one end of second beam is equipped with the convex part, the second beam laminating one end of first beam is followed the extending direction of second beam has seted up and has held the chamber, in order to form with the recess of convex part looks adaptation, the convex part with the recess grafting is connected.
2. A battery compartment as defined in claim 1, wherein: the first beam comprises a first beam and a second beam which are arranged at opposite intervals, the second beam comprises a first second beam and a second beam which are arranged at opposite intervals, and the first beam, the second beam and the second beam are connected in a head-tail plug-in mode in sequence to form an outer frame of the battery box body.
3. A battery compartment as defined in claim 1, wherein: the end part of the first beam connected with the second beam extends towards the second beam to form a bending part, the convex part is arranged at one end of the bending part close to the second beam, and the extending direction of the convex part is the same as the extending direction of the second beam.
4. A battery compartment as defined in claim 1, wherein: the convex part is of a hollow structure.
5. A battery compartment as defined in claim 1, wherein: the first beam is a die cast.
6. A battery compartment as defined in claim 1, wherein: the second beam is an extruded profile.
7. A battery compartment as defined in claim 6, wherein: the second beam is provided with a cavity penetrating along the extending direction of the second beam, and the groove is arranged in the cavity and is positioned at one end part of the cavity, which is close to the first beam.
8. A battery compartment as recited in claim 7, wherein: the second beam comprises a body and side beams, the body and the side beams are identical in extending direction, a cavity penetrating along the extending direction of the body is formed in the body, the groove is formed in the cavity of the body, which is close to one end of the first beam, so that the body is in plug-in connection with the first beam, and the side beams are arranged on one side, away from the inside of the battery box, of the body.
9. A battery compartment as recited in claim 8, wherein: the boundary beam is a through structure along the extending direction.
10. A battery pack, characterized in that: a battery compartment comprising the battery compartment of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321121072.2U CN219779079U (en) | 2023-05-11 | 2023-05-11 | Battery box and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321121072.2U CN219779079U (en) | 2023-05-11 | 2023-05-11 | Battery box and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219779079U true CN219779079U (en) | 2023-09-29 |
Family
ID=88130665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321121072.2U Active CN219779079U (en) | 2023-05-11 | 2023-05-11 | Battery box and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219779079U (en) |
-
2023
- 2023-05-11 CN CN202321121072.2U patent/CN219779079U/en active Active
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| GR01 | Patent grant |