Battery cell pressurization device

Patent metadata

Field	Value
Publication number	US-2024297333-A1
Application number	US-202218039161-A
Country	US
Kind code	A1
Filing date	Sep 22, 2022
Priority date	Sep 28, 2021
Publication date	Sep 5, 2024
Grant date	—

Abstract

A battery cell pressurization device may include a housing in which battery cells are disposed in parallel, pressurizing plates alternately disposed with the battery cells and configured to heat and pressurize the battery cells in the housing, and a pressurizing driver configured to drive the pressurizing plates to pressurize the battery cells. Each pressurizing plate may include pressurizing protrusions and heating lines installed in the pressurizing protrusions on a side facing the respective battery cell.

First claim

1 . A battery cell pressurization device, comprising:
a housing in which a plurality of battery cells are disposed in parallel; pressurizing plates alternately disposed with the plurality of battery cells and configured to heat and pressurize the plurality of battery cells in the housing; and a pressurizing driver configured to drive the pressurizing plates to pressurize the plurality of battery cells, wherein each of the pressurizing plates includes a plurality of pressurizing protrusions and heating lines, and wherein the heating lines are installed in the plurality of pressurizing protrusions on a side facing the respective battery cell.

2 . The battery cell pressurization device of claim 1 , wherein the plurality of pressurizing protrusions are disposed apart from each other by a predetermined interval on one side of the respective pressurizing plate in a vertical direction.

3 . The battery cell pressurization device of claim 1 , wherein the plurality of pressurizing protrusions are formed to extend in parallel in a length direction of the respective pressurizing plate.

4 . The battery cell pressurization device of claim 1 , wherein the plurality of pressurizing protrusions are consecutively formed in a length direction of the respective pressurizing plate or intermittently formed at intervals in the length direction.

5 . The battery cell pressurization device of claim 1 , wherein the plurality of pressurizing protrusions are disposed on the respective pressurizing plate at equal intervals.

6 . The battery cell pressurization device of claim 1 , wherein the plurality of pressurizing protrusions are formed on both side surfaces of the respective pressurizing plate.

7 . The battery cell pressurization device of claim 1 , wherein the plurality of pressurizing protrusions are provided on upper and lower portions of the respective pressurizing plate to pressurize upper and lower portions of the respective battery cell.

8 . The battery cell pressurization device of claim 1 , wherein a cross section of each of the plurality of pressurizing protrusions includes at least one among a quadrangular shape, a pentagonal shape, a trapezoid shape, and an arched shape.

9 . The battery cell pressurization device of claim 1 , wherein a spacing between the plurality of pressurizing protrusions is at least 1.0 cm or more.

10 . The battery cell pressurization device of claim 1 , wherein a thickness of an end portion of each of the plurality of pressurizing protrusions ranges from 0.3 cm to 1.5 cm in a height direction of the respective pressurizing plate.

11 . The battery cell pressurization device of claim 1 , wherein an end portion of each of the plurality of pressurizing protrusions includes a protruding tip.

12 . The battery cell pressurization device of claim 1 , wherein each of the heating lines is provided at an end portion of the respective pressurizing protrusion to be exposed to an outside.

13 . The battery cell pressurization device of claim 1 , wherein a temperature of each of the heating lines ranges from 50° C. to 75° C.

14 . The battery cell pressurization device of claim 1 , wherein each of the plurality of pressurizing protrusions is configured to pressurize only 50% or less of an entire area of the respective battery cell.

Assignees

• Lg Energy Solution Ltd

Inventors

• Bae Dong Hun
• Sung Dong Wook
• Kim Ji Eun
• Shin Jin Young
• Shin Hwan Ho
• Yoon Yeo Ju

Classifications

• H01M10/446

  Initial charging measures · CPC title

• H01M10/0481 Primary

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

• H01M50/211

  adapted for pouch cells · CPC title

• H01M10/615

  Heating or keeping warm · CPC title

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title