一种电池包和用电设备

Abstract

本实用新型提供一种电池包和用电设备，电池包包括固定板和电芯模组，电芯模组包括多个电芯和至少一个隔热垫，多个电芯固定设置于固定板的同一侧，至少两个相邻的电芯之间设有隔热垫，隔热垫包括靠近固定板的第一端和远离固定板的第二端，第一端的密度小于第二端的密度，和 / 或，第一端的厚度小于第二端的厚度。本实用新型的电池包具有隔热垫不易损坏的优点。

Claims

1. A battery pack, characterized by, include: Fixing plate; and, A battery cell module, comprising a plurality of battery cells and at least one heat insulation pad, wherein the plurality of battery cells are fixedly disposed on the same side of a fixing plate, and the heat insulation pad is disposed between at least two adjacent battery cells, the heat insulation pad comprising a first end close to the fixing plate and a second end away from the fixing plate, wherein the density of the first end is less than the density of the second end, and / or the thickness of the first end is less than the thickness of the second end.

2. The battery pack of claim 1, wherein, The fixing plate is provided with a slot, and the end of the battery cell near the fixing plate is fixed in the slot.

3. The battery pack of claim 1, wherein, The fixing plate is a liquid-cooled plate.

4. The battery pack of any one of claims 1 to 3, wherein, Along the direction from the first end to the second end, the density of the heat insulation pad increases linearly or non-linearly.

5. The battery pack of any one of claims 1 to 3, wherein, The first end has a gap with at least one adjacent cell.

6. The battery pack of claim 5, wherein, The gap between the first end and the adjacent battery cell is greater than or equal to 0.5 mm and less than or equal to 1 mm.

7. The battery pack of any one of claims 1-3, wherein, The heat insulation pad is an elastic element.

8. The battery pack of claim 5, wherein, The compression set of the heat insulation pad is less than 10%; and / or, The heat insulation pad has a heat resistance temperature greater than or equal to 300 degrees Celsius.

9. The battery pack of any one of claims 1-3, wherein, The plurality of said battery cells are arranged along a first direction, and the heat insulation pad is provided between any two adjacent battery cells along the first direction.

10. The battery pack of claim 9, wherein, The battery cell module also includes: Two end plates, the two end plates being spaced apart along the first direction, with all the battery cells sandwiched between the two end plates; and, A binding member that binds and secures the two end plates and the battery cell between the two end plates.

11. The battery pack of claim 10, wherein, The binding device includes a first binding device and a second binding device. The first binding device is located on the side of the second binding device closer to the fixing plate. The force exerted by the first binding device on the end plate is less than the force exerted by the second binding device on the end plate.

12. The battery pack of any one of claims 1-3, wherein, The heat insulation pad is bonded and fixed to the adjacent battery cell.

13. The battery pack of any one of claims 1-3, wherein, The heat insulation pad includes a first side, and the battery cell includes a second side. The first side of the heat insulation pad abuts against the second side of the adjacent battery cell, so that the heat insulation pad is sandwiched between two adjacent battery cells. Wherein, the ratio of the area of ​​the first side to the area of ​​the abutting second side is greater than or equal to 0.7 and less than or equal to 0.

95.

14. The battery pack of any one of claims 1-3, wherein, The end face of the battery cell away from the fixing plate is the first end face, and the end face of the second end away from the fixing plate is the second end face; Along the direction from the first end toward the second end, the distance between the first end face and the adjacent second end face is greater than or equal to 1 mm and less than or equal to 4 mm.

15. An electrical device, characterized by Includes the battery pack as described in any one of claims 1 to 14.

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