Battery module, and battery pack and vehicle including the same

Patent metadata

Field	Value
Publication number	US-12545125-B2
Application number	US-202218034944-A
Country	US
Kind code	B2
Filing date	Jun 7, 2022
Priority date	Jun 8, 2021
Publication date	Feb 10, 2026
Grant date	Feb 10, 2026

Abstract

A battery module includes a sub module including a cell stack assembly having a plurality of battery cells; a module housing configured to accommodate the sub module; a front sealing plate configured to cover an opening at one longitudinal side of the module housing and having an inlet for introducing an insulating cooling liquid; a rear sealing plate configured to cover an opening at the other longitudinal side of the module housing and having an outlet for discharging the insulating cooling liquid; and a sensing assembly configured to sense voltage of the battery cell.

First claim

What is claimed is:

1 . A battery module, comprising:
a sub module including a cell stack assembly having a plurality of battery cells; a module housing configured to house the sub module; a front sealing plate configured to cover an opening at a first longitudinal side of the module housing and having an inlet for introducing an insulating cooling liquid; a rear sealing plate configured to cover an opening at a second longitudinal side of the module housing opposed the first longitudinal side and having an outlet for discharging the insulating cooling liquid; and a sensing assembly configured to sense a voltage of at least one battery cell of the plurality of battery cells, wherein the cell stack assembly further includes a flow path spacer interposed between adjacent battery cells, and wherein the flow path spacer has a cooling liquid flow path extending along a longitudinal direction of the flow path spacer.

2 . The battery module according to claim 1 , wherein the sensing assembly is disposed on a top of the sub module.

3 . The battery module according to claim 1 , wherein the sensing assembly includes a sensing line electrically connected to the plurality of battery cells and extending from the first longitudinal end of the battery cells to the second longitudinal end.

4 . The battery module according to claim 3 , wherein the sensing line is interposed between a cell body portion of the battery cell and a cell wing portion folded toward the cell body portion.

5 . The battery module according to claim 3 , wherein the sensing assembly further includes a temperature sensor mounted on the sensing line.

6 . The battery module according to claim 5 , wherein the temperature sensor is interposed between a cell body portion of the battery cell and a cell wing portion folded toward the cell body portion.

7 . The battery module according to claim 1 , wherein the sub module further includes:
a front bus bar frame assembly coupled to a first longitudinal side of the cell stack assembly; and a rear bus bar frame assembly coupled to a second longitudinal side of the cell stack assembly, the second longitudinal side opposed to the first longitudinal side.

8 . The battery module according to claim 7 , wherein the front bus bar frame assembly includes:
a bus bar frame; and a plurality of bus bars fixed on the bus bar frame and connected to an electrode leads of the plurality of battery cells.

9 . The battery module according to claim 8 , wherein the bus bar frame includes a cooling liquid hole.

10 . The battery module according to claim 9 , wherein the cooling liquid hole is formed at a position corresponding to the flow path spacer.

11 . A battery pack comprising the battery module according to claim 1 .

12 . A vehicle comprising the battery module according to claim 1 .

Assignees

• Lg Energy Solution Ltd

Inventors

• Ju Eun-Ah
• Yun Hyeon-Ki
• Tannenberger Guenter
• Janke Jan
• Harasztosi Uwe

Classifications

• H01M2220/20

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

• H01M10/482

  for several batteries or cells simultaneously or sequentially · CPC title

• B60L2240/545

  Temperature · CPC title

• H01M10/6567

  Liquids · CPC title

• H01M10/613

  Cooling or keeping cold · CPC title