电池单体、电池模组及电池包

Abstract

本实用新型涉及一种电池单体、电池模组及电池包，该电池单体包括壳体和绝缘膜。壳体，包括两个第一面、两个第二面和一个第三面；两个第一面沿第一方向相对设置，两个第二面沿第二方向相对设置，各第一面的两端分别连接两个第二面的一端，第三面位于第一面和第二面的同一侧，且与两个第一面和两个第二面均相连；第一面为电池单体与相邻电池单体相对的面，且为所述电池单体最大的面；第一方向和第二方向垂直。绝缘膜，包覆壳体的两个第二面、一个第三面和任意一个第一面。上述电池单体能够减少空间占用，显著提升体积利用率。在保证绝缘性能的同时，减少绝缘膜的使用量，提高电池单体能量密度和散热性能，并降低生产成本。

Claims

1. A battery cell, characterized by, include: The housing includes two first surfaces, two second surfaces, and one third surface; the two first surfaces are arranged opposite each other along a first direction, the two second surfaces are arranged opposite each other along a second direction, and the two ends of each first surface are respectively connected to one end of the two second surfaces; the third surface is located on the same side of the first surfaces and the second surfaces, and is connected to both the two first surfaces and the two second surfaces; the first surface is the surface of the battery cell facing the adjacent battery cell, and is the largest surface of the battery cell; the first direction and the second direction are perpendicular; An insulating film covers two second surfaces, one third surface, and any one first surface of the housing.

2. The battery cell of claim 1, wherein, A chamfer is provided at the junction of the first and second surfaces, and the insulating film is covered on the chamfer.

3. The battery cell of claim 2, wherein, The insulating film is located near the edge of the uncovered first surface, and the side of the insulating film away from the housing does not exceed the surface of the uncovered first surface.

4. The battery cell of claim 1, wherein, The insulating film comprises: A closing structure is provided on the insulating film covering the third side, the area of ​​the third side being smaller than the area of ​​the second side.

5. The battery cell of claim 1, wherein, The insulating film comprises: The closing structure is disposed on the insulating film covering the second side, and the area of ​​the second side is smaller than the area of ​​the third side.

6. The battery cell according to claim 1, characterized in that, The insulating film comprises: A cut is made at the connection between the insulating film covering the second side and the insulating film covering the third side, and the insulating film provides insulation coverage to the housing through the cut.

7. The battery cell of claim 1, wherein, The insulating film comprises: A notch is provided at the corner of the insulating film covering the third side. The notch forms a folded edge, which covers the transition edge of the third side that does not cover the first side.

8. A battery module, characterized by Includes the battery cell described in any one of claims 1-7.

9. The battery module of claim 8, wherein, Between two adjacent battery cells, the first side of one battery cell that is not covered with an insulating film faces the first side of the other battery cell that is covered with an insulating film.

10. A battery pack, characterized by, Includes the battery module as described in claim 8 or 9.

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