Battery module, and battery rack and power storage device, each comprising same battery module

Patent metadata

Field	Value
Publication number	US-12294070-B2
Application number	US-202017639147-A
Country	US
Kind code	B2
Filing date	Sep 2, 2020
Priority date	Sep 24, 2019
Publication date	May 6, 2025
Grant date	May 6, 2025

Abstract

A battery module includes a plurality of battery cells stacked on each other; a module case configured to accommodate the plurality of battery cells; and a plurality of thermal runaway prevention units provided in the module case and respectively disposed between the plurality of battery cells along a stacking direction of the plurality of battery cells.

First claim

What is claimed is:

1. A battery module, comprising:
a plurality of battery cells stacked on each other in a stacking direction;
a module case configured to accommodate the plurality of battery cells; and
a plurality of thermal runaway preventers provided in the module case and respectively disposed between the plurality of battery cells along the stacking direction,
wherein each of the plurality of thermal runaway preventers includes a pair of cooling fins to contact a respective one of the plurality of battery cells, each of the pair of cooling fins having a fin body and at least one end of the fin body having a first section extending outwardly from the at least one end of the fin body and a second section extending inwardly from the first section;
wherein the first section is an inclined part configured to extend with a slope from the fin body at a predetermined angle and disposed to be spaced apart from an end of the battery cell by a predetermined distance; and
wherein the second section is a horizontal part bent from the inclined part and provided in contact with one of the pair of heat transfer members.

2. The battery module according to claim 1 , further comprising:
a pair of heat transfer members disposed above and below the plurality of battery cells and disposed in contact with the plurality of thermal runaway preventers and an inner surface of the module case.

3. The battery module according to claim 2 , wherein each of the plurality of thermal runaway preventers further includes:
an insulation member disposed between the pair of cooling fins and having a predetermined length along a longitudinal direction of the plurality of battery cells.

4. The battery module according to claim 2 , wherein opposite ends of the pair of cooling fins are in contact with the pair of heat transfer members, respectively.

5. The battery module according to claim 1 ,
wherein each end of the fin body has the first section and the second section respectively provided in contact with the heat transfer members.

6. The battery module according to claim 1 , wherein distal ends of the horizontal part are located above and below the insulation member, respectively.

7. The battery module according to claim 1 , wherein distal ends of the horizontal part are located above and below the insulation member, respectively.

8. A battery rack, comprising:
at least one battery module as defined in claim 1 ; and
a rack case configured to package the at least one battery module.

9. An energy storage system, comprising:
at least one battery rack as defined in claim 8 .

10. A battery module, comprising:
a plurality of battery cells stacked on each other in a stacking direction;
a module case configured to accommodate the plurality of battery cells; and
a plurality of thermal runaway preventers provided in the module case and respectively disposed between the plurality of battery cells along the stacking direction,
wherein each of the plurality of thermal runaway preventers includes a pair of cooling fins to contact a respective one of the plurality of battery cells, each of the pair of cooling fins having a fin body and at least one end of the fin body having a first section extending outwardly from the at least one end of the fin body and a second section extending inwardly from the first section,
wherein adjacent thermal runaway preventers of the plurality of thermal runaway preventers contact a same battery cell of the plurality of battery cells, and
wherein one of the pair of cooling fins from each of the adjacent thermal runaway preventers extends over the same battery cell and do not contact one another.

Assignees

• Lg Energy Solution Ltd

Inventors

• Shin Eun-Gyu
• Mun Jeong-O
• Yoo Jae-Min
• Lee Yoon-Koo

Classifications

• H01M10/625

  Vehicles · CPC title

• H01M10/627

  Stationary installations, e.g. power plant buffering or backup power supplies · CPC title

• H01M50/24

  adapted for protecting batteries from their environment, e.g. from corrosion (thermal insulation H01M10/658) · CPC title

• H01M10/6554

  Rods or plates · CPC title

• H01M10/653

  characterised by electrically insulating or thermally conductive materials · CPC title