Battery module

Patent metadata

Field	Value
Publication number	US-11901529-B2
Application number	US-201916656197-A
Country	US
Kind code	B2
Filing date	Oct 17, 2019
Priority date	Oct 19, 2018
Publication date	Feb 13, 2024
Grant date	Feb 13, 2024

Abstract

A battery module includes a cell stack in which a plurality of unit cells are aligned in a first direction and including an insulating member surrounding the plurality of unit cells; and a module housing in which a plurality of receiving parts into which the cell stack is inserted are provided, wherein the receiving part includes a fixing wall surrounding the cell stack and having at least a portion which is in contact with the cell stack.

First claim

What is claimed is:

1. A battery module comprising:
a cell stack comprising a plurality of unit cells aligned in a first direction and an insulating member around the plurality of unit cells; and
a module housing having a plurality of receiving parts, the cell stack being in one of the plurality of receiving parts,
wherein one of the plurality of receiving parts comprises a fixing wall around the cell stack, wherein the fixing wall comprises end walls, and a separation wall in contact with the insulating member of the cell stack, wherein the separation wall extends in the first direction and the end walls extend in a second direction perpendicular to the first direction,
wherein the module housing comprises a bottom surface, an outer wall around the bottom surface, and the end walls in an inner space defined by the outer wall, and
wherein the bottom surface, the outer wall, the end walls, and the separation wall are integrally formed.

2. The battery module of claim 1 , wherein:
the separation wall partitions the inner space defined by the outer wall of the module housing to form the plurality of receiving parts,
first and second receiving parts of the plurality of receiving parts are at opposite sides of the separation wall in the second direction perpendicular to the first direction, and
the separation wall corresponds to a portion of the fixing wall of each of the first and second receiving parts and is in contact with a side surface of the cell stack.

3. The battery module of claim 2 , wherein:
the end walls are at respective sides of each of the plurality of receiving parts in the first direction to engage end surfaces at respective sides of the cell stack in the first direction.

4. The battery module of claim 3 , wherein:
one surface of the end walls faces the outer wall of the module housing and is spaced apart from the outer wall along the first direction to form a first impact absorbing space between the end wall and the outer wall.

5. The battery module of claim 3 , wherein:
the plurality of receiving parts are in the inner space of the module housing, the first receiving part and a third receiving part are adjacent to each other along the first direction, and the end walls of the first and third receiving parts facing in the first direction and between the first and third receiving parts are spaced apart from each other to form a second impact absorbing space between the end walls.

6. The battery module of claim 1 , further comprising a cooling channel for a coolant to flow through, the cooling channel being located below the bottom surface of the module housing.

7. The battery module of claim 6 , wherein:
a side wall of the cooling channel is integral with the bottom surface of the module housing.

8. The battery module of claim 1 , further comprising:
coupling parts configured to couple the module housing to an adjacent module housing.

9. The battery module of claim 8 , wherein:
the coupling parts are on a first wall and a second wall of an outer wall of the module housing that are positioned in the second direction perpendicular to the first direction, and
one of the coupling parts on the second wall of the module housing is coupled to another one of the coupling parts on a first wall of an adjacent module housing.

10. A battery pack comprising:
a plurality of modules, each module of the plurality of modules comprising:
a cell stack comprising a plurality of unit cells aligned in a first direction and an insulating member around the plurality of unit cells; and
a module housing having a plurality of receiving parts, the cell stack being in one of the plurality of receiving parts,
wherein the one of the plurality of receiving parts comprises a fixing wall around the cell stack and having at least a first portion in contact with the cell stack,
wherein a cooling channel for a coolant to flow through is located below a bottom surface of the module housing rather than inside the fixing wall,
wherein the module housing comprises the bottom surface, an outer wall around the bottom surface, end walls extending in a second direction perpendicular to the first direction in an inner space defined by the outer wall, and a separation wall extending between the end walls in the first direction,
wherein one of the end walls corresponds to a second portion of the fixing wall,
wherein one surface of the one of the end walls faces the outer wall of the module housing and is spaced apart from the outer wall along the first direction to form a first impact absorbing space between the end wall and the outer wall, and
wherein the end walls, the separation wall, and the outer wall of the module housing are integral with the bottom surface of the module housing.

11. The battery pack of claim 10 , wherein:
the separation wall partitions the inner space defined by the outer wall of the module housing to form the plurality of receiving parts,
first and second receiving parts of the plurality of receiving parts are at opposite sides of the separation wall in the second direction perpendicular to the first direction, and
the separation wall corresponds to a third portion of the fixing wall of each of the first and second receiving parts and is in contact with a side surface of the cell stack.

12. The battery pack of claim 11 , wherein:
the end walls are at respective sides of each of the plurality of receiving parts in the first direction to engage end surfaces at respective sides of the cell stack in the first direction.

13. The battery pack of claim 12 , wherein:
the plurality of receiving parts are in the inner space of the module housing, the first receiving part and a third receiving part are adjacent to each other along the first direction, and the end walls of the first and third receiving parts facing in the first direction and between the first and third receiving parts are spaced apart from each other to form a second impact absorbing space between the end walls.

14. The battery pack of claim 10 , wherein:
a side wall of the cooling channel is integral with the bottom surface of the module housing.

15. The battery pack of claim 10 , further comprising:
coupling parts configured to couple the module housing of the module to a module housing of an adjacent module of the plurality of modules.

16. The battery pack of claim 15 , wherein:
the coupling parts are on a first wall and a second wall of the outer wall of the module housing that are positioned in the second direction perpendicular to the first direction, and
one of the coupling parts on the second wall of the module housing is coupled to another one of the coupling parts on a first wall of an adjacent module housing of the adjacent module.

Assignees

• Samsung Sdi Co Ltd

Inventors

• LIM Jisoon
• Kim Sungyong
• Kim Jaeho
• Moon Soodeok
• Park Daeyeop
• Bae Jangwoong
• Lee Junhyung
• Lim Dooyong
• Heo Eungi

Classifications

• H01M10/613 Primary

  Cooling or keeping cold · CPC title

• H01M10/6557

  arranged between the cells · CPC title

• H01M50/209

  adapted for prismatic or rectangular cells (H01M50/216 takes precedence) · CPC title

• H01M50/242

  adapted for protecting batteries against vibrations, collision impact or swelling · CPC title

• H01M50/264

  for cells or batteries, e.g. straps, tie rods or peripheral frames · CPC title