Battery module

Patent metadata

Field	Value
Publication number	US-2016197387-A1
Application number	US-201514771941-A
Country	US
Kind code	A1
Filing date	May 22, 2015
Priority date	Aug 29, 2014
Publication date	Jul 7, 2016
Grant date	—

Abstract

The present invention relates to a battery module, which includes one or more battery cell units, and the battery cell unit includes a battery cell, a fixing member located surrounding an outer circumference surface of the battery cell, and a heat absorbing material located between the battery cell and the fixing member, and as a result, heat generation inside the battery module is suppressed, and ignition between the series-connected battery cell units may be suppressed. Accordingly, excellent charge and discharge efficiency, an excellent cycle property and a lifespan property of the battery may be exhibited without concern for explosion or ignition of the battery module.

First claim

1 . A battery module comprising one or more battery cell units,
wherein the battery cell unit comprises a battery cell, a fixing member located surrounding an outer circumference surface of the battery cell, and a heat absorbing material located between the battery cell and the fixing member.

2 . The battery module of claim 1 , wherein the battery module comprises two or more battery cell units, and further comprises a heat absorbing material between a surface of the battery cell unit and a facing surface of the adjacent battery cell unit.

3 . The battery module of claim 1 , wherein the battery module comprises two or more battery cell units, and a surface of the battery cell unit and a facing surface of the adjacent battery cell unit are in contact with each other while having a heat absorbing material provided therebetween.

4 . The battery module of claim 1 , wherein the battery cell is a plate-type battery cell, and the battery module comprises two or more battery cell units, and one or both surfaces of the plate-type battery cell are laminated to be arranged so as to face a battery cell in an adjacent battery cell unit.

5 . The battery module of claim 4 , wherein the plate-type battery cell is a pouch-type battery cell which comprises a laminate sheet case, in which a resin layer and a metal layer are laminated in sequence, and an electrode assembly built in the case, and an outer circumference surface of the case is sealed.

6 . The battery module of claim 5 , wherein a fixing member is integrally combined so as to surround an outer circumference surface of the sealed pouch-type battery cell.

7 . The battery module of claim 1 , wherein a positive electrode terminal and a negative electrode terminal protrude on one side of the outer circumference surface of the battery cell; or a positive electrode terminal protrudes on one side of the outer circumference surface, and a negative electrode terminal protrudes on the opposite side.

8 . The battery module of claim 7 , wherein a fixing member is integrally combined to the whole outer circumference surface except for the positive electrode terminal and the negative electrode terminal.

9 . The battery module of claim 1 , wherein the fixing member comprises rubber or plastic.

10 . The battery module of claim 1 , wherein the fixing member comprises a silicone-based resin or thermoplastic polyurethane.

11 . The battery module of claim 1 , wherein the heat absorbing material comprises water and silica.

12 . The battery module of claim 11 , wherein the heat absorbing material comprises water in 75 to 95% by weight and silica in 5 to 25% by weight.

13 . The battery module of claim 11 , wherein the silica comprises at least one selected from the group consisted of quartz, tridymite and cristobalite.

14 . The battery module of claim 1 , wherein the battery cell is a lithium secondary battery.

15 . A battery pack comprising the battery module of claim 1 as a unit module.

16 . A device comprising the battery pack of claim 15 .

17 . The device of claim 16 , which is selected from the group consisted of electric vehicles, hybrid electric vehicles, plug-in hybrid electric vehicles and power storage devices.

Assignees

• Lg Chemical Ltd

Inventors

• Lee Chul Kyu
• Yun Hyung Ku
• Jung Bum Young
• Choi Seung Ryul
• An Sun Mo

Classifications

• H01M10/653 Primary

  characterised by electrically insulating or thermally conductive materials · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M10/058

  Construction or manufacture · CPC title

• H01M10/613

  Cooling or keeping cold · CPC title

• H01M10/651

  characterised by parameters specified by a numeric value or mathematical formula, e.g. ratios, sizes or concentrations · CPC title