Battery assemblies, battery packs including the same, and automobiles

Abstract

The present invention provides a battery assembly, a battery pack, and an automobile that can more efficiently discharge high-temperature gases and flames to the outside in the event of a battery cell malfunction. [Solution] The present invention relates to a battery assembly comprising: a plurality of battery cells having vents configured to discharge venting gas; a frame configured to anchor the plurality of battery cells and having a plurality of venting holes formed at positions corresponding to the vents; and a cover member configured to cover the venting holes and to be opened by the venting gas.

Claims

1. Multiple battery cells equipped with vents configured to discharge venting gas; A frame in which a plurality of venting holes are formed at positions corresponding to the vent portion; and Includes a cover member that covers the venting hole and is configured to be opened by the venting gas, The battery assembly is characterized in that the battery cell is in direct contact with the cover member.

2. The battery assembly according to claim 1, further comprising a cooling medium configured to be filled between the battery cells.

3. The battery assembly according to claim 1, characterized in that the cover member is located inside the frame.

4. The battery assembly according to claim 1, characterized in that the cover member is configured to cover at least a portion of the plurality of venting holes.

5. The battery assembly according to claim 1, characterized in that the cover member includes a bent portion configured such that its end portion is bent and extends away from the venting hole.

6. The aforementioned frame is The battery assembly according to claim 1, characterized in that it includes an insertion groove configured to be recessed in at least a portion thereof, into which the end portion of the cover member is inserted.

7. The battery assembly according to claim 1, characterized in that the cover member is located on the outside of the frame.

8. The battery assembly according to claim 1, further comprising a holder located inside the cover member and configured to at least partially accommodate the battery cells.

9. The aforementioned holder is Multiple housings configured such that each battery cell is at least partially housed, The battery assembly according to claim 8, characterized in that it includes a spacer provided between adjacent housings among the plurality of housings, configured to maintain the spacing between the battery cells.

10. The battery assembly according to claim 9, further comprising an adhesive configured to fill the spaces between the battery cells and to secure the battery cells to one another.

11. The aforementioned adhesive is The battery assembly according to claim 10, characterized in that it is interposed between the battery cell and the spacer.

12. The battery assembly according to claim 11, characterized in that the spacer includes a portion whose thickness decreases as it goes in one direction.

13. The adhesive is interposed between the battery cell and the frame. The battery assembly according to claim 10, characterized in that the frame includes a filling groove configured to be filled with the adhesive.

14. The frame includes connecting protrusions configured such that at least a portion of them protrudes inward. The battery assembly according to claim 8, characterized in that the holder includes a coupling groove configured such that the coupling projection is inserted.

15. The battery assembly according to claim 1, wherein the cover member includes a housing portion that at least partially houses the battery cells.

16. The battery assembly according to claim 15, wherein the cover member includes a bottom part facing the vent portion.

17. The battery assembly according to claim 15, wherein the cover member includes a spacer provided between adjacent housings among a plurality of housings, configured to maintain the spacing between the battery cells.

18. A venting channel is provided below the aforementioned venting hole. The battery assembly according to claim 1, wherein the venting gas discharged from the vent portion of the battery cell passes through the venting hole and moves into the venting channel.

19. Further including an external case provided outside the frame, The battery assembly according to claim 1, characterized in that a venting channel is formed between the frame and the outer case so as to communicate with the venting hole.

20. The aforementioned external case is The battery assembly according to claim 19, further comprising ribs configured to divide the venting channel into a plurality of sections.

21. The external case includes a discharge section that communicates with the venting passage and is configured to discharge the venting gas to the outside. The battery assembly according to claim 20, characterized in that the ribs are configured to guide the venting gas to the discharge section.

22. A battery pack comprising the battery assembly described in any one of claims 1 to 21.

23. An automobile comprising the battery assembly according to any one of claims 1 to 21.

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