CN220753620U - Battery pack and battery energy storage device - Google Patents
Battery pack and battery energy storage device Download PDFInfo
- Publication number
- CN220753620U CN220753620U CN202321826484.6U CN202321826484U CN220753620U CN 220753620 U CN220753620 U CN 220753620U CN 202321826484 U CN202321826484 U CN 202321826484U CN 220753620 U CN220753620 U CN 220753620U
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- Prior art keywords
- battery
- reinforcing
- battery pack
- battery case
- bottom plate
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- 238000004146 energy storage Methods 0.000 title claims abstract description 9
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 82
- 230000002787 reinforcement Effects 0.000 claims abstract description 26
- 239000003351 stiffener Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 abstract description 3
- 230000001965 increasing effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model relates to the technical field of batteries, and discloses a battery pack and a battery energy storage device. The battery pack includes: the battery box body comprises a bottom plate and a plurality of side walls, and the corner of the battery box body is formed by the adjacent two side walls and the part where the bottom plate is connected with each other; the reinforcing piece is coated on the outer surface of the corner of the battery box body; in a pair of reinforcement and bight, the reinforcement includes three first reinforcing plate, connects through the second reinforcing plate between the three first reinforcing plate, and the second reinforcing plate is located the position that two lateral walls are connected and is located the position that every lateral wall is connected with the bottom plate and be cambered surface form structure, and the second reinforcing plate is located the position that two lateral walls and bottom plate are connected and be cambered surface form structure. The battery pack disclosed by the utility model can enhance the strength of the box corners of the battery box body and avoid deformation or damage of the box corners caused by extrusion.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery pack and a battery energy storage device.
Background
The conventional battery pack case is generally of a stamped and formed integral structure, and four corners of the stamped and formed case are relatively weak, so that when the battery pack is inserted into a container, the corners of the case are easily extruded to deform or break.
Disclosure of Invention
The utility model provides a battery pack and a battery energy storage device, which can strengthen the strength of a box corner of a battery box body and avoid deformation or damage of the box corner caused by extrusion.
In a first aspect, the present utility model provides a battery pack comprising:
the battery box body comprises a bottom plate and a plurality of side walls, and the adjacent two side walls and the part where the bottom plate is connected form a corner part of the battery box body;
the reinforcing piece is coated on the outer surface of the corner of the battery box body;
the pair of reinforcing pieces and the corner part are arranged, the reinforcing pieces comprise three first reinforcing plates, the three first reinforcing plates are respectively located with the battery box body and are located on the two side walls of the corner part and attached to the bottom plate, the three first reinforcing plates are connected through second reinforcing plates, the second reinforcing plates are located on the two side wall connection parts and located on the two side wall connection parts, the two side wall connection parts are arc-shaped structures, and the two side wall connection parts are arc-shaped structures.
According to the battery pack, the reinforcing piece is coated on the corner of the battery box body, so that the corner of the battery box body is protected. Wherein, three first reinforcing plates attach respectively in the surface of two lateral walls of battery box and bottom plate, connect through the second reinforcing plate between the three first reinforcing plates, the second reinforcing plate is located the position that two adjacent lateral walls are connected (i.e. the edge between two lateral walls) and is the cambered surface column structure, the second reinforcing plate is located the position that every lateral wall is connected with the bottom plate and is also the cambered surface column structure to, the second reinforcing plate is located the position that two lateral walls and bottom plate are connected (i.e. the intersection point department of three edges) and is also the cambered surface column structure. Because the intersection point of the edge of the corner and the three edges is a weaker part, the second reinforcing plate is coated by the second reinforcing plate, when the corner of the battery box body is impacted externally, external acting force acts on the second reinforcing plate first, so that less acting force is transmitted to the edge or the intersection point of the edge, better protection effect can be achieved on the corner, and the strength of the corner position is increased. When the battery pack is inserted into the container, the corner of the battery pack can be prevented from being deformed or damaged due to extrusion because the strength of the corner of the battery case is increased.
In a second aspect, the present utility model provides a battery energy storage device comprising a plurality of battery packs as described in the first aspect.
Drawings
Fig. 1 is a schematic view showing an overall structure of a battery pack according to an embodiment of the present utility model;
fig. 2 is a schematic view of a structure of a battery pack without a reinforcement according to an embodiment of the present utility model;
fig. 3 is a schematic view of a part of a battery pack according to an embodiment of the present utility model;
fig. 4 is a schematic view of another part of a battery pack according to an embodiment of the present utility model.
In the figure:
100-a battery box; 110-a bottom plate; 120-sidewalls; 130-cover plate; 200-stiffeners; 210-a first stiffener; 220-a second stiffener; 300-locating pins; 400-fixing piece; 410-a mounting portion; 500-connection.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 and 2, the battery pack in the embodiment of the utility model includes a battery case 100 and a reinforcement 200, the battery case 100 includes a bottom plate 110 and four sidewalls 120, the four sidewalls 120 are sequentially connected, and the four sidewalls 120 are respectively connected with the bottom plate 110, so that the bottom plate 110 and the four sidewalls 120 enclose a cavity for placing a battery cell. Of course, the battery case 100 further includes a cover plate 130, where the cover plate 130 covers the cavity, so that the inside of the battery case 100 is a sealed space, thereby ensuring the safety performance of the battery cell.
As shown in fig. 2, for the battery case 100, the portions where the adjacent two side walls 120 and the bottom plate 110 are connected to each other form corners of the battery case 100, that is, the battery case 100 has four corners. In this embodiment, the corner is understood to be a structure formed by the edge where the two side walls 120 are connected, the edge where the two side walls 120 are connected to the bottom plate 110, and the portion of the battery case 100 around each edge, and reference may be made to the structure at a in fig. 2.
Referring to fig. 2 and 3 together, the outer surface of each corner of the battery case 100 is coated with one reinforcing member 200, and in particular, the reinforcing member 200 may include three first reinforcing plates 210 and four second reinforcing plates 220, wherein the three first reinforcing plates 210 are perpendicular to each other, and the three first reinforcing plates 210 are respectively attached to the surfaces of the two sidewalls 120 and the bottom plate 110 of the battery case 100. The connection portion of two adjacent side walls 120 (the edge between two side walls 120) and the connection portion of each side wall 120 and the bottom plate 110 are respectively covered with a second reinforcing plate 220, that is, the connection portion of any two adjacent first reinforcing plates 210 is connected by a second reinforcing plate 220. In addition, the connection between the two side walls 120 and the bottom plate 110 (at the intersection of the three edges) is performed by one second reinforcing plate 220, and it is also understood that the three second reinforcing plates 220 located at the three edges are connected by one second reinforcing plate 220, so that an integral body is formed between the second reinforcing plates 220.
In this embodiment, each second reinforcing plate 220 has a cambered surface structure, and since the edges of each corner or the structures at the intersections of the edges are fragile, when the corners are subjected to external force, the corners are covered by the second reinforcing plates 220 having the cambered surface structure, and the external impact force acts on the second reinforcing plates 220 first, the second reinforcing plates 220 can disperse and absorb the external force, and therefore, the external force can be transmitted to the corners less, and the corners can be better protected. Thus, the three first reinforcing plates 210 and the four second reinforcing plates 220 are clad in cooperation with the corners, thereby improving the strength of the corners. When the battery pack is inserted into the battery container, since the strength of the corners of the battery case 100 is increased, the corners of the battery pack are prevented from being deformed or broken by being pressed.
In addition, the battery pack of the present embodiment wraps the reinforcement 200 only at the corners of the battery case 100, and the strength of the corners of the battery case 100 is increased without increasing the weight of the battery case 100 too much, which is also advantageous in reducing the production cost.
The plurality of second reinforcing plates 220 may be formed as a separate structure or as a single structure. When the plurality of second reinforcing plates 220 are integrally formed, the three first reinforcing plates 210 are connected by one second reinforcing plate 220, and at this time, the second reinforcing plate 220 is formed in a cambered surface structure at the connection portion of the two side walls 120 and the connection portion of each side wall 120 and the bottom plate 110, and the second reinforcing plate 220 is formed in a cambered surface structure at the connection portion of the two side walls 120 and the bottom plate 110, so that all the fragile portions at the corners of the battery case 100 are covered by the cambered surface structure, thereby better protecting the corner structure.
In addition, the reinforcement 200 in the present embodiment may be an integral structure, and in this case, the first reinforcement plate 210 and the second reinforcement plate 220 are only described by dividing each portion of the reinforcement 200, and in practical application, no obvious boundary exists between two adjacent first reinforcement plates 210 or between two adjacent first reinforcement plates 210 and 220.
Alternatively, in other embodiments, the reinforcement member 200 may be formed by welding the first reinforcement plates 210 and the second reinforcement plates 220 to each other, which may also be advantageous for improving the strength of the reinforcement member 200.
In addition, it should be noted that the reinforcing member 200 in the present embodiment is applicable to the battery case 100 of a split structure, and is also applicable to the battery case 100 integrally formed. As an embodiment, the battery case 100 in this example is of an integrally molded structure, and the reinforcing members 200 are provided at the corners thereof, so that the battery case 100 can be protected more effectively.
In the present embodiment, the battery case 100 is rectangular, and in actual use, the reinforcing member 200 may be coated on the corner of the battery case 100 when the battery case 100 has another shape. For example, when the battery case 100 is diamond-shaped, the corners of the diamond-shaped battery case may be considered as the connecting portions between the adjacent two side walls and the bottom plate, and the reinforcement member 200 of the present embodiment may cover the corners of the diamond-shaped battery case, and each of the first reinforcement plates 210 of the reinforcement member 200 may be attached to the corresponding plate.
As described above, the battery pack in this embodiment needs to be inserted into an external structure such as a container, in some embodiments, the battery case 100 may further be provided with a positioning pin 300, where the positioning pin 300 protrudes from the side wall 120 of the battery case 100, and when the battery pack is inserted into the container, the battery case 100 may be cooperatively connected with the pin hole on the container through the positioning pin 300, so as to play a role in guiding and positioning the battery pack, and ensure that the battery pack can be placed in the middle of the container chamber. In addition, after the locating pin 300 is matched and connected with the pin hole, the battery pack can be fixed.
The positioning pins 300 may be provided on the reinforcing member 200 such that the positioning pins 300 protrude from the surface of the battery case 100, which may prevent the battery case 100 from interfering with the container when the battery pack is inserted into the container. In order to further ensure the assembly effect between the battery pack and the container, positioning pins 300 may be disposed at a plurality of corners, so as to enhance the positioning effect of the positioning pins 300.
In some embodiments, referring to fig. 3 and 4 together, the first reinforcing plate 210 attached to the bottom plate 110 in the reinforcing member 200 protrudes from the battery case 100, that is, one end of the first reinforcing plate 210 protrudes from the battery case 100 compared to the battery case 100. The positioning pin can be fixed at the position of the first reinforcing plate 210 extending out of the battery box 100, at this time, the extending position of the first reinforcing plate 210 can also support and reinforce the positioning pin 300, and the positioning pin 300 is placed to collide with the surface of the bottom plate 110 of the battery box 100 when being inserted into a container.
Further, with continued reference to fig. 3 and 4, a fixing member 400 may be further provided at a portion of the first reinforcing plate 210 extending out of the battery case 100, and the fixing member 400 may be fixed to the first reinforcing plate 210. The positioning pin 300 may be fixedly coupled to the fixing member 400 to ensure the effect of the fixed coupling between the positioning pin 300 and the battery case 100. Two mounting portions 410 may be disposed on a side of the fixing member 400 near the bottom first reinforcing plate 210, the mounting portions 410 are parallel to the first reinforcing plate 210, and the fixing member 400 may be fixedly connected with the first reinforcing plate 210 through the mounting portions 410. It will be appreciated that the mounting portion 410 increases the contact area between the fixing member 400 and the first reinforcing plate 210, which is advantageous in enhancing the stability of the connection between the fixing member 400 and the first reinforcing plate 210. For example, the mounting portion 410 and the first reinforcing plate 210 may be coupled by bolts.
In some embodiments, referring to fig. 1, the battery case 100 may further be provided with a connection part 500, and the battery case 100 may be connected with an external structure (e.g., a lifting lug of a passenger car or a fixed beam of a container) through the connection part 500, and the connection stability between the battery pack and the external structure may be improved under the cooperation of the positioning pin 300 and the connection part 500.
In this embodiment, the connection part 500 may be fixedly disposed at a portion of the first reinforcing plate 210 attached to the bottom plate 110 extending out of the battery case 100, so that the first reinforcing plate 210 may also play a role in reinforcing the connection part 500. In addition, since the connection part 500 protrudes from the surface of the battery case 100, interference between the battery case 100 and the external structure can be prevented when the battery case 100 is connected to the external structure. Alternatively, the connection part 500 may be fixedly provided on the first reinforcing plate 210 attached to the sidewall 120, and in this case, it may be ensured that the connection part 500 protrudes from the surface of the battery case 100.
To secure the protection of the corners of the battery case 100 by the reinforcement member 200, as an embodiment, the strength of the material of the reinforcement member 200 may be made higher than that of the material of the battery case 100. Alternatively, as another embodiment, the reinforcement 200 may be a sheet metal part.
Based on the same inventive concept, embodiments of the present utility model may also provide a battery energy storage device including a plurality of battery packs as in the above embodiments. Because the corner of each battery pack is not easy to deform or damage, the power consumption safety of the battery pack can be improved, and the power consumption reliability of the battery energy storage device in the embodiment is improved.
It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present utility model without departing from the spirit and scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. A battery pack, comprising:
the battery box body comprises a bottom plate and a plurality of side walls, and the adjacent two side walls and the part where the bottom plate is connected form a corner part of the battery box body;
the reinforcing piece is coated on the outer surface of the corner of the battery box body;
the pair of reinforcing pieces and the corner part are arranged, the reinforcing pieces comprise three first reinforcing plates, the three first reinforcing plates are respectively located with the battery box body and are located on the two side walls of the corner part and attached to the bottom plate, the three first reinforcing plates are connected through second reinforcing plates, the second reinforcing plates are located on the two side wall connection parts and located on the two side wall connection parts, the two side wall connection parts are arc-shaped structures, and the two side wall connection parts are arc-shaped structures.
2. The battery pack according to claim 1, further comprising a connection portion connected to the reinforcement member, the battery case being connected to an external structure through the connection portion.
3. The battery pack of claim 1, further comprising a locating pin disposed on the stiffener such that the battery case is positioned with an external structure by the locating pin.
4. The battery pack according to claim 3, wherein the first reinforcing plate attached to the bottom plate protrudes from the battery case, and the positioning pin is fixed to a portion of the first reinforcing plate protruding from the battery case.
5. The battery pack according to claim 4, wherein the reinforcement is provided with a fixing member at a portion of the first reinforcement plate protruding from the battery case, and the positioning pin is fixedly coupled to the fixing member.
6. The battery pack of claim 5, wherein the fixing member includes a mounting portion parallel to the first reinforcing plate attached to the bottom plate, the mounting portion being fixedly connected to the first reinforcing plate.
7. The battery pack of claim 1, wherein the battery case is of an integrally formed structure and the reinforcement is of an integrally formed structure.
8. The battery pack of claim 1, wherein the strength of the material of the reinforcement is greater than the strength of the material of the battery case.
9. The battery pack of claim 1, wherein the stiffener is a sheet metal part.
10. A battery energy storage device comprising a battery pack according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321826484.6U CN220753620U (en) | 2023-07-12 | 2023-07-12 | Battery pack and battery energy storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321826484.6U CN220753620U (en) | 2023-07-12 | 2023-07-12 | Battery pack and battery energy storage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220753620U true CN220753620U (en) | 2024-04-09 |
Family
ID=90569876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321826484.6U Active CN220753620U (en) | 2023-07-12 | 2023-07-12 | Battery pack and battery energy storage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220753620U (en) |
-
2023
- 2023-07-12 CN CN202321826484.6U patent/CN220753620U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |