Battery module and battery pack including the same

Patent metadata

Field	Value
Publication number	US-12580261-B2
Application number	US-202117796607-A
Country	US
Kind code	B2
Filing date	Nov 4, 2021
Priority date	Dec 8, 2020
Publication date	Mar 17, 2026
Grant date	Mar 17, 2026

Abstract

A battery module includes a battery cell stack containing a plurality of battery cells stacked along a first direction; and an exterior member that wraps the outer surface of the battery cell stack, in which a central portion of the lower surface of the battery cell stack is opened, wherein one end part of the exterior member is attached to one side part of the lower surface of the battery cell stack, and wherein the other end part of the exterior member is attached to the other side part of the lower surface of the battery cell stack.

First claim

The invention claimed is:

1 . A battery module comprising:
a battery cell stack containing a plurality of battery cells stacked along a first direction; an exterior member that wraps an outer surface of the battery cell stack, in which a central portion of a bottom surface of the battery cell stack is opened; a first end part of the exterior member being attached to a first side part of the bottom surface of the battery cell stack; a second end part of the exterior member being attached to a second side part of the bottom surface of the battery cell stack; and a thermal resin extending between the first end part and the second end part, wherein the lower surface of the battery stack directly contacts the thermal resin, the first end part and the second end part.

2 . The battery module according to claim 1 , wherein:
an outer surface of the exterior member of the battery module is exposed to the outside.

3 . The battery module according to claim 2 , wherein:
the exterior member is made of an elastic material.

4 . The battery module according to claim 3 , wherein:
the exterior member is formed such that a film of the elastic material wraps the outer surface of the battery cell stack from the first side part of the bottom surface of the battery cell stack, and wraps up to the second side part of the bottom surface of the battery cell stack.

5 . The battery module according to claim 1 , further comprising a compression pad positioned on each side surface of the battery cell stack,
wherein the compression pad is positioned between the exterior member and the outside surface of the battery cell stack, and the exterior member presses the battery cell stack in the first direction.

6 . The battery module according to claim 5 , wherein:
the exterior member presses an upper surface of the battery cell stack in a second direction, and the second direction is perpendicular to the first direction.

7 . The battery module according to claim 6 , wherein:
the second direction is a width direction of the plurality of battery cells.

8 . The battery module according to claim 5 , wherein:
the compression pad is extended along a first side surface of the battery cell stack.

9 . A battery pack comprising the battery module as set forth in claim 1 .

10 . The battery pack according to claim 9 , wherein the battery pack comprises:
a lower pack frame on which at least two of the battery modules are mounted, an upper pack frame that covers the upper portions of the at least two battery modules.

11 . The battery pack according to claim 10 , wherein:
the lower pack frame comprises a plurality of module regions, and the battery module is mounted in the module region.

12 . The battery pack according to claim 11 , wherein:
the thermal conductive resin layer is formed on the module region.

13 . The battery pack according to claim 12 , wherein:
the thermal conductive resin layer has a size equal to the central portion of the bottom surface of the battery cell stack.

Assignees

• Lg Energy Solution Ltd

Inventors

• Park Subin
• Seong Junyeob
• Park Won Kyoung
• Han Honggoo

Classifications

• H01M50/211 Primary

  adapted for pouch cells · CPC title

• H01M10/653

  characterised by electrically insulating or thermally conductive materials · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M10/613 Primary

  Cooling or keeping cold · CPC title

• H01M50/242 Primary

  adapted for protecting batteries against vibrations, collision impact or swelling · CPC title