Battery module and battery pack

Patent metadata

Field	Value
Publication number	US-11961986-B2
Application number	US-202117180846-A
Country	US
Kind code	B2
Filing date	Feb 21, 2021
Priority date	Dec 25, 2020
Publication date	Apr 16, 2024
Grant date	Apr 16, 2024

Abstract

A battery module includes a battery column, a heat insulation pad and a side plate. The battery column includes a plurality of batteries, and the batteries are arranged in a first direction. The heat insulation pad is disposed between two adjacent batteries in the battery column. The side plate is disposed on a side surface of the battery column and extends in the first direction. At least one heat-resistant region is disposed on the side plate and corresponds to a position of the heat insulation pad. The heat-resistant region is any one of a through hole, a blind hole, and a notch or a combination of two or more of the foregoing communicated with each other. At least a portion of an orthographic projection of the heat insulation pad on the side plate is disposed within the heat-resistant region.

First claim

What is claimed is:

1. A battery module, comprising:
a battery column, including a plurality of batteries, wherein the batteries are arranged in a first direction;
a heat insulation pad, disposed between two adjacent batteries in the battery column;
a side plate, disposed on a side surface of the battery column and extending in the first direction;
wherein at least one heat-resistant region is disposed on the side plate and corresponds to a position of the heat insulation pad, the heat-resistant region is any one of a through hole, a blind hole, and a notch or a combination of two or more of the foregoing communicated with each other, and at least a portion of the at insulation pad overlaps the heat-resistant region of the side plate,
wherein the heat-resistant region covers a portion of a side surface of the heat insulation pad, at least one of the two adjacent batteries is a target battery, and at least a portion of an orthographic projection of the target battery on the side plate is disposed within the heat-resistant region, and the side surface of the heat insulation pad faces an inner surface of the side plate.

2. The battery module according to claim 1 , wherein an orthographic projection of the heat insulation pad on the side plate in the first direction does not exceed an edge of the heat-resistant region.

3. The battery module according to claim 2 , wherein a plurality of the heat insulation pads are provided and are respectively disposed on different positions of the battery column in the first direction,
a plurality of the heat-resistant regions are disposed on the side plate, one of the heat insulation pads at least corresponds to one of the heat-resistant regions, and the heat-resistant regions corresponding to different heat insulation pads do not communicate with one another.

4. The battery module according to claim 2 , wherein a ratio of a sum of areas of orthographic projection patterns of all heat-resistant regions of the at least one heat-resistant region corresponding to the heat insulation pad on the side plate to an area of a reference region is less than or equal to 3/7, the reference region is rectangular, a height of the reference region is a height of the side plate, and a width of the reference region is an average length of all the heat-resistant regions in the first direction.

5. The battery module according to claim 1 , wherein the orthographic projection of the target battery on the side plate in the first direction does not exceed the edge of the heat-resistant region.

6. The battery module according to claim 5 , wherein the two adjacent batteries are both target batteries.

7. The battery module according to claim 6 , wherein a plurality of heat insulation pads are provided and are respectively disposed on different positions of the battery column in the first direction,
a plurality of the heat-resistant regions are disposed on the side plate, one of the heat insulation pads at least corresponds to one of the heat-resistant regions, and the heat-resistant regions corresponding to different heat insulation pads do not communicate with one another.

8. The battery module according to claim 6 , wherein a ratio of a sum of areas of orthographic projection patterns of all heat-resistant regions of the at least one heat-resistant region corresponding to the heat insulation pad on the side plate to an area of a reference region is less than or equal to 3/7, the reference region is rectangular, a height of the reference region is a height of the side plate, and a width of the reference region is an average length of all the heat-resistant regions in the first direction.

9. The battery module according to claim 5 , wherein a plurality of the heat insulation pads are provided and are respectively disposed on different positions of the battery column in the first direction,
a plurality of the heat-resistant regions are disposed on the side plate, one of the heat insulation pads at least corresponds to one of the heat-resistant regions, and the heat-resistant regions corresponding to different heat insulation pads do not communicate with one another.

10. The battery module according to claim 5 , wherein a ratio of a sum of areas of orthographic projection patterns of all heat-resistant regions of the at least one heat-resistant region corresponding to the heat insulation pad on the side plate to an area of a reference region is less than or equal to 3/7, the reference region is rectangular, a height of the reference region is a height of the side plate, and a width of the reference region is an average length of all the heat-resistant regions in the first direction.

11. The battery module according to claim 1 , wherein an opening of the blind hole faces the battery column.

12. The battery module according to claim 11 , wherein a plurality of the heat insulation pads are provided and are respectively disposed on different positions of the battery column in the first direction,
a plurality of the heat-resistant regions are disposed on the side plate, one of the heat insulation pads at least corresponds to one of the heat-resistant regions, and the heat-resistant regions corresponding to different heat insulation pads do not communicate with one another.

13. The battery module according to claim 1 , wherein a plurality of the heat insulation pads are provided and are respectively disposed on different positions of the battery column in the first direction,
a plurality of the heat-resistant regions are disposed on the side plate, one of the heat insulation pads at least corresponds to one of the heat-resistant regions, and the heat-resistant regions corresponding to different heat insulation pads do not communicate with one another.

14. The battery module according to claim 1 , wherein a ratio of a sum of areas of orthographic projection patterns of all heat-resistant regions of the at least one heat-resistant region corresponding to the heat insulation pad on the side plate to an area of a reference region is less than or equal to 3/7, the reference region is rectangular, a height of the reference region is a height of the side plate, and a width of the reference region is an average length of all the heat-resistant regions in the first direction.

15. A battery pack, comprising the battery module according to claim 1 .

16. A battery pack, comprising the battery module according to claim 2 .

Assignees

• Calb Co Ltd
• Calb Tech Co Ltd

Inventors

• Li Zhouli
• Niu Li
• Sun Guohua
• Li Xinjian
• Guo Qixin

Classifications

• H01M10/658 Primary

  by thermal insulation or shielding · CPC title

• H01M10/615

  Heating or keeping warm · CPC title

• H01M50/204 Primary

  Racks, modules or packs for multiple batteries or multiple cells · CPC title

• H01M50/289

  characterised by spacing elements or positioning means within frames, racks or packs (spacing elements inside cells other than separators, membranes or diaphragms H01M50/471) · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title