Battery module

Patent metadata

Field	Value
Publication number	US-2024106031-A1
Application number	US-202318182367-A
Country	US
Kind code	A1
Filing date	Mar 13, 2023
Priority date	Sep 26, 2022
Publication date	Mar 28, 2024
Grant date	—

Abstract

A battery module of the present disclosure includes a plurality of cell stacks spaced apart from each other in a horizontal direction, a plurality of side walls disposed between the plurality of cell stacks and spaced apart from each other in the horizontal direction, and a plate accommodated in a hollow between the plurality of side walls. Each of the plurality of side walls includes a side hole connected to the hollow.

First claim

What is claimed is:

1 . A battery module comprising:
a plurality of cell stacks spaced apart from each other in a horizontal direction; a plurality of side walls disposed between the plurality of cell stacks and spaced apart from each other in the horizontal direction; and a plate accommodated in a hollow between the plurality of side walls, wherein each of the plurality of side walls comprises a side hole connected to the hollow.

2 . The battery module of claim 1 , wherein the plate is moved to shield a side hole of a second side wall of the plurality of side walls by gas inflowing into the hollow through a side hole of a first side wall of the plurality of side walls.

3 . The battery module of claim 2 , wherein an upper part of the hollow is connected to an external space, and
the inflowing gas is discharged to the external space through the upper part of the hollow.

4 . The battery module of claim 2 , wherein a length between the first side wall and the plate becomes greater than a length between the second side wall and the plate when the gas inflows into the side hole of the first side wall.

5 . The battery module of claim 1 , wherein each of the plurality of cell stacks comprises a plurality of battery cells stacked in a vertical direction.

6 . The battery module of claim 5 , wherein each of the plurality of side walls comprises a plurality of sub-areas disposed in the vertical direction, and
each of the plurality of sub-areas contacts with one of the plurality of battery cells.

7 . The battery module of claim 6 , wherein the side hole is disposed in each of the plurality of sub-areas.

8 . The battery module of claim 1 , further comprising:
a plurality of connecting parts configured to connect between the plurality of side walls to form the hollow.

9 . The battery module of claim 8 , wherein a cross section in a vertical direction of each of the plurality of connecting parts is concave.

10 . The battery module of claim 1 , wherein a first side end of the plate is coupled to an inside of a first side wall of the plurality of side walls, and a second side end of the plate is coupled to an inside of a second side wall of the plurality of side walls.

11 . The battery module of claim 10 , wherein the first side end of the plate is separated from the inside of the first side wall by gas inflowing into the hollow through a side hole of the first side wall and then moved to the inside of the second side wall, and
a side hole of the second side wall is shielded by the plate.

12 . The battery module of claim 1 , wherein the plate comprises an insulating material.

13 . A battery module comprising:
a first cell stack and a second cell stack spaced apart from each other in a first horizontal direction; a partition wall comprising a first side wall and a second side wall disposed between the first cell stack and the second cell stack, and a plurality of hollows disposed between the first side wall and the second side wall; and a plurality of plates, each of the plurality of plates being accommodated in each of the plurality of hollows, wherein each of the first side wall and the second side wall comprises a plurality of side holes.

14 . The battery module of claim 13 , wherein each of the plurality of side holes is connected to any one hollow of the plurality of hollows.

15 . The battery module of claim 14 , wherein the plurality of hollows comprise a first hollow connected to a first side hole of the first side wall and a second side hole of the second side wall among the plurality of side holes, and a second hollow connected to a third side hole of the first side wall and a fourth side hole of the second side wall among the plurality of side holes.

16 . The battery module of claim 15 , wherein the plurality of plates comprise a first plate accommodated in the first hollow and a second plate accommodated in the second hollow.

17 . The battery module of claim 16 , wherein the first plate is moved to shield the second side hole when gas inflows into the first hollow through the first side hole.

18 . The battery module of claim 17 , wherein the gas is discharged to an external space through the first hollow.

19 . The battery module of claim 13 , wherein the partition wall further comprises a plurality of connecting parts spaced apart from each other in a second horizontal direction between the first side wall and the second side wall to form the plurality of hollows.

20 . The battery module of claim 13 , wherein each of the first cell stack and the second cell stack comprises a plurality of battery cells stacked in a vertical direction,
the plurality of side holes are disposed on each of the first side wall and the second side wall according to a row corresponding to the vertical direction and a column corresponding to the second horizontal direction, and each of the plurality of plates has a size covering side holes located in the same column among the plurality of side holes.

Assignees

• Sk On Co Ltd

Inventors

• Jeong Won Seok
• Jeon Hae Ryong
• Lee Seung Dong

Classifications

• H01M2220/30

  Batteries in portable systems, e.g. mobile phone, laptop · CPC title

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M10/658 Primary

  by thermal insulation or shielding · CPC title

• H01M50/211

  adapted for pouch cells · CPC title

• H01M50/383

  Flame arresting or ignition-preventing means · CPC title