Battery cells, batteries, and power consumption devices

Abstract

The present invention provides a battery cell (20), a battery (100), and a power consumption device, wherein the battery cell (20) is a case assembly (21) including a housing (211) and poles (212), the housing (211) having a first wall (2111) provided in the first wall (2111) having a through hole (2112), the poles (212) being installed so as to penetrate the through hole (2112), the poles (212) having a via hole (2121), the via hole (2121) is provided in the poles (212) The electrode assembly (22) includes a case assembly (21) that penetrates and connects the inside and outside of the housing (211), and an electrode assembly (22) provided inside the housing (211), wherein the electrode assembly (22) has a conductive portion (221), the conductive portion (221) is installed to penetrate a via hole (2121), and a first connection portion (23) is formed between the electrode assembly (22) and the via hole (2121), the first connection portion (23) sealing the via hole (2121).

Claims

1. It is a battery cell, A case assembly comprising a housing and pole posts, wherein the housing has a first wall, the first wall is provided with a through hole, the pole posts are installed so as to penetrate the through hole, the pole posts are provided with via holes, the via holes penetrate the pole posts and connect the inside and outside of the housing, A battery cell comprising an electrode assembly provided within the housing, wherein the electrode assembly has a conductive portion, the conductive portion is installed so as to penetrate the via hole, and a first connection portion is formed between the conductive portion and the via hole, the first connection portion sealing the via hole.

2. The battery cell according to claim 1, wherein the housing has a first direction and a second direction, the first direction intersects the second direction and is parallel to the first wall, and the dimensions of the via hole in the first direction are greater than the dimensions of the via hole in the second direction.

3. The battery cell according to claim 2, wherein in the first direction, the dimensions of the conductive portion are less than or equal to the dimensions of the via hole.

4. The battery cell according to claim 3, wherein in the first direction, the dimension of the conductive portion is L1, and the dimension of the via hole is L2, where 0 mm ≤ L2 - L1 ≤ 4 mm.

5. The battery cell according to claim 3 or 4, wherein, in the first direction, the dimensions of the first connection portion are larger than the dimensions of the via hole.

6. The battery cell according to any one of claims 2 to 5, wherein in the second direction, the dimensions of the conductive portion are less than or equal to the dimensions of the via hole.

7. In the second direction, the dimensions of the conductive portion are W1, and the dimensions of the via hole are W2, where 0 mm ≤ W2 - W1 ≤ 0.1 mm, the battery cell according to claim 6.

8. The battery cell according to claim 6 or 7, wherein in the second direction, the dimensions of the first connection portion are larger than the dimensions of the via hole.

9. The battery cell according to any one of claims 1 to 8, wherein the conductive portion has a distal end that is separated from the inside of the housing, and the distal end is connected to the via hole via the first connecting portion.

10. The battery cell according to any one of claims 1 to 9, wherein the pole column has a first surface, the first surface is provided with a relief groove, the via hole penetrates the relief groove, and the first connection portion is located within the relief groove.

11. The battery cell according to claim 10, wherein the first connection portion has an outer surface facing the outside of the relief groove, and the outer surface does not protrude from the first surface.

12. The battery cell according to claim 10 or 11, wherein the housing has a third direction, the third direction is perpendicular to the first wall, and in the third direction, the dimension of the relief groove is H1, where 1 mm ≤ H1.

13. The battery cell according to any one of claims 1 to 9, wherein the pole column has a first surface, the via hole penetrates the first surface, the first connection portion protrudes from the first surface, the pole column is for connecting to an adapter, a housing portion is provided at the end of the adapter facing the first surface, and at least a portion of the first connection portion is located within the housing portion.

14. The battery cell according to any one of claims 1 to 9, wherein the pole column has a first surface, the via hole penetrates the first surface, and the first connection portion has an outer surface facing the outside of the pole column, and the outer surface is flush with the first surface.

15. The battery cell according to any one of claims 1 to 14, wherein the via hole has a first orifice formed on the outside of the pole column and a second orifice formed on the inside of the pole column, and the projection of the first orifice onto the first wall does not overlap with the projection of the second orifice onto the first wall.

16. The battery cell according to claim 15, wherein the via hole has a central axis and is installed at an inclination with respect to the first wall.

17. The battery cell according to claim 16, wherein the angle between the central axis and the first wall is α, where 45 degrees ≤ α ≤ 90 degrees.

18. A battery cell according to any one of claims 1 to 17, wherein a guide opening is formed between the inside of the pole column and the via hole, and the width of the guide opening gradually decreases in the direction from the inside of the pole column to the outside of the pole column.

19. The aforementioned pole column is, A column body is installed so as to penetrate the aforementioned through hole, A battery cell according to any one of claims 1 to 18, comprising a first plate portion and a second plate portion perpendicularly connected to the column body portion, wherein the first plate portion is located outside the housing and the second plate portion is located inside the housing, and the via hole penetrates the first plate portion, the column body portion and the second plate portion.

20. A battery cell according to any one of claims 1 to 19, wherein a connection area is provided on the pole column, the connection area is for connecting to an adapter, and a second connection portion is formed between it and the adapter.

21. The battery cell according to any one of claims 1 to 20, wherein the housing includes a housing body and an end cover, the end cover covers an opening in the housing body, and the first wall is formed in the housing body or the end cover.

22. A battery comprising a battery cell according to any one of claims 1 to 21.

23. A power consumption device comprising a battery cell according to any one of claims 1 to 21 or a battery according to claim 22.

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