CA-3156681-C - BOX OF BATTERY, BATTERY, POWER CONSUMPTION APPARATUS, METHOD FOR PRODUCING BATTERY AND APPARATUS FOR PRODUCING BATTERY

Abstract

An embodiment of the present application is provided with a battery box, a battery, a power consumption device, and a method for producing a battery and an apparatus for producing a battery. The box of the battery includes: an electrical chamber, configured to accommodate a battery cell group; a collection chamber, configured to collect emissions of the battery cell provided with the pressure relief mechanism when the pressure relief mechanism is actuated; an isolation component for isolating the electrical chamber and the collection chamber, such that the electrical chamber and the collection chamber are arranged on both sides of the isolation component; wherein a surface of the isolation component that is close to the battery cell group is provided with an avoidance opening, the avoidance opening extends along the first direction, and the plurality of pressure relief mechanisms of the battery cell group face the avoidance opening. A technical solution of an embodiment of the present application can enhance the safety of the battery, and at the same time, can be compatible with the size of the battery cell group, and the installation process is more convenient and faster.

Inventors

• Yao Li
• Xiaobo Chen
• Mingguang GU

Assignees

• CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Dates

Publication Date

20260505

Application Date

20210323

Claims (20)

1. CLAIMS What is claimed is: 1. A box of a battery, comprising: an electrical chamber, configured to accommodate a battery cell group, wherein the battery cell group comprises a plurality of battery cells arranged along a first direction, the plurality of battery cells comprise a first battery cell and a second battery cell, the first battery cell comprises a first pressure relief mechanism, the second battery cell comprises a second pressure relief mechanism, the first pressure relief mechanism is disposed on a first wall of the first battery cell, and the second pressure relief mechanism is disposed on a first wall of the second battery cell; a collection chamber, configured to collect emissions of the first battery cell and/or second battery cell when the first pressure relief mechanism and/or the second pressure relief mechanism is actuated; an isolation component, configured to isolate the electrical chamber from the collection chamber, such that the isolation component is between the electrical chamber and the collection chamber; wherein the first wall of the first battery cell and the first wall of the second battery cell are attached to the isolation component, a surface of the isolation component that is close to the battery cell group is provided with a continuous avoidance opening, the continuous avoidance opening extends along the first direction, and the first pressure relief mechanism and the second pressure relief mechanism face the continuous avoidance opening.
2. 2. The box according to claim 1, wherein all of the pressure relief mechanisms of the battery cell group face the continuous avoidance opening.
3. 3. The box according to claim 1 or 2, wherein the continuous avoidance opening is configured to provide a deformation space for the first pressure relief mechanism and/or the second pressure relief mechanism, such that the first pressure relief mechanism and/or the second pressure relief mechanism deforms and ruptures towards a direction that is close to the isolation component when the first pressure relief mechanism and/or the second pressure relief mechanism is actuated. 46
4. 4. The box according to any one of claims 1 to 3, wherein each battery cell of the plurality of battery cells comprises the pressure relief mechanism.
5. 5. The box according to any one of claims 1 to 4, wherein the continuous avoidance opening is a recess or a through hole.
6. 6. The box according to claim 5, wherein a width of the continuous avoidance opening along a second direction is greater than a width of the first pressure relief mechanism and/or the second pressure relief mechanism along the second direction, wherein the second direction is perpendicular to the first direction.
7. 7. The box according to claim 5 or 6, wherein the continuous avoidance opening is a recess, and a bottom wall of the recess is provided with an exhaust hole, and the emissions of the first battery cell and/or the second battery cell enter the collection chamber through the exhaust hole.
8. 8. The box according to claim 7, wherein there are a plurality of the exhaust holes, and each exhaust hole is arranged opposite to a corresponding pressure relief mechanism.
9. 9. The box according to any one of claims 5 to 8, wherein the box comprises at least one gas blocking bar, the gas blocking bar is disposed at a bottom wall of the recess, and the gas blocking bar is configured to divide the recess into at least two spaces along the first direction.
10. 10. The box according to claim 9, wherein there are a plurality of the gas blocking bars, and the plurality of the gas blocking bars are arranged along the first direction, such that the gas blocking bar is arranged between two adjacent pressure relief mechanisms.
11. 11. The box according to claim 9 or 10, wherein the gas blocking bar is made of a compressible material, and the gas blocking bar is compressed by the first wall and the bottom wall of the recess.
12. 12. The box according to any one of claims 9 to 11, wherein notches are provided on two side walls of the recess along a second direction, and the notches are configured to place the gas blocking bars, and the second direction is perpendicular to the first direction.
13. 13. The box according to any one of claims 5 to 12, wherein a blocking member is provided at an outer side of an opening of the recess along a second direction, and the 47 blocking member is configured to block an adhesive from entering the recess, wherein the adhesive is configured to fix the first wall to the isolation component, and the second direction is perpendicular to the first direction.
14. 14. The box according to claim 13, wherein a second recess is provided at the surface of the isolation component that is close to the battery cell group, and the second recess extends along the first direction and is located at the outer side of the opening of the recess along the second direction, and the second recess is configured to accommodate the blocking member.
15. 15. The box according to claim 13 or 14, wherein the blocking member is made of a compressible material, and the blocking member is compressed by the surface of the isolation component that is close to the battery cell group and a bottom wall of the second recess.
16. 16. The box according to any one of claims 1 to 15, wherein inside of the isolation component is provided with a flow channel, and the flow channel is configured to contain a fluid such that the isolation component adjusts the temperature for the battery cell.
17. 17. The box according to claim 16, wherein the isolation component is configured to damage when the first pressure relief mechanism and/or the second pressure relief mechanism is actuated, such that the fluid is discharged from inside of the isolation component.
18. 18. The box according to any one of claims 5 to 17, wherein the isolation component comprises a first plate and a second plate, the first plate is located at one side of the second plate that is close to the electrical chamber and attached to the first wall of the first battery cell and the second battery cell, a first region of the first plate is recessed towards the second plate to form the recess, and the first region is connected to the second plate.
19. 19. The box according to claim 18, wherein the first region is provided with a first exhaust hole, and the first exhaust hole is disposed opposite to the first pressure relief mechanism or the second pressure relief mechanism.
20. 20. The box according to claim 19, wherein the first region is provided with a plurality of the first exhaust holes, and the plurality of the first exhaust holes are disposed at intervals. 48

Description

BOX OF BATTERY, BATTERY, POWER CONSUMPTION APPARATUS, METHOD FOR PRODUCING BATTERY AND APPARATUS FOR PRODUCING BATTERY TECHNICAL FIELD 5 [0001] The present application relates to the field of battery technologies, and in particular, to a box of battery, a battery, a power consumption apparatus, a method for producing battery and an apparatus for producing battery. BACKGROUND [0002] Energy saving and emission reduction are the key to the sustainable 10 development of the automotive industry. In this case, electric vehicles have become an important part of the sustainable development of the automotive industry due to their advantages of energy conservation and environmental protection. For electric vehicles, the battery technology is also an important factor for their development. [0003] During the development of the battery technology, in addition to improve 15 the performance of a battery, safety is also an issue that cannot be ignored. If the safety of the battery cannot be ensured, then the battery cannot be used. Therefore, how to enhance the safety of the battery is an urgent technical problem to be solved in the battery technology. SUMMARY 20 [0004] The present application is provided with a box of battery, a battery, a CA 03156681 2022·4·29 power consumption apparatus, and a method for producing a battery and an apparatus for producing a battery, which can enhance the safety of the battery. [0005] In a first aspect, a box of battery is provided, including: an electrical chamber, configured to accommodate a battery cell group, where the battery cell 1 group includes a plurality of battery cells arranged along a first direction, at least two battery cells of the plurality of battery cells include respectively a pressure relief mechanism, the pressure relief mechanism is disposed on a first wall of the battery cell, and the pressure relief mechanism is configured to be actuated when internal 5 pressure or a temperature of the battery cell reaches a threshold value to relieve the internal pressure; a collection chamber, configured to collect emissions of the battery cell provided with the pressure relief mechanism when the pressure relief mechanism is actuated; an isolation component, configured to isolate the electrical chamber from the collection chamber, such that the electrical chamber and the collection chamber 10 are arranged on both sides of the isolation component; where the first wall is attached to the isolation component, a surface of the isolation component that is close to the battery cell group is provided with an avoidance opening, the avoidance opening extends along the first direction, and the plurality of pressure relief mechanisms of the battery cell group face the avoidance opening. 15 [0006] In the technical solution of the embodiment of the present application, the isolation component is used to separate the electrical chamber for accommodating the battery cell and the collection chamber for collecting the emissions. When the pressure relief mechanism is actuated, the emissions of the battery cell enter the collection chamber instead of the electrical chamber, or a small amount of the 20 emissions enter the electrical chamber, so that the electrical connection component in the electrical chamber is not conductive and short-circuited, and therefore the safety of the battery can be enhanced. By providing the avoidance opening corresponding to the pressure relief mechanism of the battery cell group in the box of the battery, the pressure relief mechanism is prevented from being blocked, and the pressure relief 25 mechanism is ensured to be able to smoothly discharge the emissions. At the same time, compared with the solution that each pressure relief mechanism is in one-to-one correspondence with each avoidance opening (this solution has extremely high requirements to assembly, if a cumulative tolerance of the assembly exceeds an allowable range, the pressure relief mechanism of some battery cells will not be 30 aligned with the corresponding avoidance opening, thereby being blocked by the isolation component, therefore the emissions are not discharged smoothly when the pressure relief mechanism is actuated, and in extreme cases, the battery cell will CA 03156681 2022·4·29 2 explode because the pressure is not relieved in time). By providing the avoidance opening extending along the first direction, and making all of the plurality of pressure relief mechanisms of the battery cell group face the avoidance openings, the difficulty of aligning the pressure relief mechanism with the avoidance opening can be greatly 5 reduced, thereby preventing the pressure relief mechanism from being blocked. [0007] In some embodiments, all of the pressure relief mechanisms of the battery cell group face the avoidance opening. [0008] Since all of the pressure relief mechanisms of the battery cell group in the embodiment of the present application can face the avoidance openings, such that 10 when all of th