Battery module, battery pack including same battery module, and automobile including same battery pack

Patent metadata

Field	Value
Publication number	US-11923562-B2
Application number	US-202217978676-A
Country	US
Kind code	B2
Filing date	Nov 1, 2022
Priority date	Mar 7, 2018
Publication date	Mar 5, 2024
Grant date	Mar 5, 2024

Abstract

A battery module includes: a battery cell assembly having a plurality of battery cells; a top plate configured to cover an upper side of the battery cell assembly; a bottom plate configured to cover a lower side of the battery cell assembly; a sensing assembly disposed to cover a front side and a rear side of the battery cell assembly; a pair of side plates disposed at side surfaces, respectively, of the battery cell assembly; and a pair of compression pads disposed between the pair of side plates and the battery cell assembly, respectively.

First claim

The invention claimed is:

1. A battery module, comprising:
a battery cell assembly having a plurality of battery cells;
a top plate configured to cover an upper side of the battery cell assembly;
a bottom plate disposed opposite to the top plate and configured to cover a lower side of the battery cell assembly;
a sensing assembly disposed at a front side and a rear side of the bottom plate and at a front side and a rear side of the top plate to cover a front side and a rear side of the battery cell assembly;
a pair of side plates coupled to the sensing assembly, the top plate and the bottom plate and disposed at side surfaces, respectively, of the battery cell assembly; and
a pair of compression pads disposed between the pair of side plates and the battery cell assembly, respectively, wherein a side surface of each of the pair of compression pads is substantially the same size as the side surfaces of the battery cell assembly,
wherein the sensing assembly includes:
a first bus bar unit disposed at the front side of the battery cell assembly and coupled to the pair of side plates;
a second bus bar unit disposed opposite to the first bus bar unit and coupled to the pair of side plates at the rear side of the battery cell assembly; and
wherein the first bus bar unit and the second bus bar unit are coupled to the pair of side plates by at least one coupling pin.

2. The battery module according to claim 1 , wherein the sensing assembly further includes:
a pair of sensing wires configured to connect the first bus bar unit and the second bus bar unit, each of the pair of sensing wires fitted into the respective one of the pair of compression pads or into the respective one of the pair of side plates at one of the side surfaces of the battery cell assembly.

3. The battery module according to claim 2 ,
wherein each one of the pair of sensing wires is provided as a flexible printed circuit board.

4. The battery module according to claim 2 ,
wherein the pair of compression pads each has a wire placing groove formed along a longitudinal direction thereof so that the pair of sensing wires are placed therein, respectively.

5. The battery module according to claim 4 ,
wherein each wire placing groove has a depth corresponding to a thickness of one of the pair of sensing wires.

6. The battery module according to claim 2 ,
wherein the pair of side plates each has a wire placing groove formed along a longitudinal direction thereof so that the pair of sensing wires are placed therein, respectively.

7. The battery module according to claim 6 ,
wherein each wire placing groove has a depth corresponding to a thickness of one of the pair of sensing wires.

8. The battery module according to claim 1 ,
wherein the at least one coupling pin includes a plurality of coupling pins, and
wherein the plurality of coupling pins are provided at opposing ends of the first bus bar unit and at opposing ends of the second bus bar unit and are spaced apart from each other by a predetermined distance along a height direction of the first bus bar unit and the second bus bar unit.

9. The battery module according to claim 1 ,
wherein the pair of side plates have at least one pin insert groove into which the at least one coupling pin is inserted, respectively.

10. A battery pack, comprising:
at least one battery module according to claim 1 ; and
a pack case configured to package the at least one battery module.

11. A vehicle, comprising:
at least one battery pack according to claim 10 .

12. A battery module, comprising:
a battery cell assembly having a plurality of battery cells;
a top plate configured to cover an upper side of the battery cell assembly;
a bottom plate disposed opposite to the top plate and configured to cover a lower side of the battery cell assembly;
a sensing assembly disposed at a front side and a rear side of the bottom plate and at a front side and a rear side of the top plate to cover a front side and a rear side of the battery cell assembly;
a pair of side plates coupled to the sensing assembly, the top plate and the bottom plate and disposed at side surfaces, respectively, of the battery cell assembly; and
a pair of compression pads disposed between the pair of side plates and the battery cell assembly, respectively,
wherein the pair of compression pads each has a wire placing groove formed along a longitudinal direction thereof.

13. The battery module according to claim 12 ,
wherein the sensing assembly includes:
a first bus bar unit disposed at the front side of the battery cell assembly and coupled to the pair of side plates;
a second bus bar unit disposed opposite to the first bus bar unit and coupled to the pair of side plates at the rear side of the battery cell assembly; and
a pair of sensing wires configured to connect the first bus bar unit and the second bus bar unit, each of the pair of sensing wires fitted into the respective one of the pair of compression pads or into the respective one of the pair of side plates at one of the side surfaces of the battery cell assembly.

14. The battery module according to claim 13 ,
wherein each one of the pair of sensing wires is provided as a flexible printed circuit board.

15. The battery module according to claim 13 ,
wherein each wire placing groove has a depth corresponding to a thickness of one of the pair of sensing wires.

16. The battery module according to claim 13 ,
wherein the pair of side plates each has a wire placing groove formed along a longitudinal direction thereof so that the pair of sensing wires are placed therein, respectively.

17. A battery module, comprising:
a battery cell assembly having a plurality of battery cells;
a sensing assembly disposed to cover a front side and a rear side of the battery cell assembly; and
a pair of compression pads disposed to cover side surfaces, respectively, of the battery cell assembly, wherein a side surface of each of the pair of compression pads is substantially the same size as the side surfaces of the battery cell assembly,
wherein the sensing assembly includes:
a first bus bar unit disposed at the front side of the battery cell assembly;
a second bus bar unit disposed opposite to the first bus bar unit at the rear side of the battery cell assembly; and
a pair of sensing wires configured to connect the first bus bar unit and the second bus bar unit, each of the pair of sensing wires fitted into the respective one of the pair of compression pads at one of the side surfaces of the battery cell assembly.

18. The battery module according to claim 17 ,
wherein each one of the pair of sensing wires is provided as a flexible printed circuit board.

19. The battery module according to claim 17 ,
wherein the pair of compression pads each has a wire placing groove formed along a longitudinal direction thereof so that the pair of sensing wires are placed therein, respectively.

20. The battery module according to claim 19 ,
wherein each wire placing groove has a depth corresponding to a thickness of one of the pair of sensing wires.

Assignees

• Lg Energy Solution Ltd

Inventors

• Seo Sung-Won
• Kim Dong Yeon
• Chi Ho-June
• Kang Dal-Mo
• Kong Jin-Hak
• Mun Jeong-O
• Lee Yoon-Koo
• Choi Yong-Seok
• Eichhorn Alexander
• Track Andreas

Classifications

• H01M50/502 Primary

  Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing · CPC title

• H01M10/0481

  Compression means other than compression means for stacks of electrodes and separators · CPC title

• H01M10/48 Primary

  Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) · CPC title

• H01M10/482

  for several batteries or cells simultaneously or sequentially · CPC title

• H01M50/20 Primary

  Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders (structural combination of accumulators with charging apparatus H01M10/46) · CPC title