Battery module and battery pack including the same

Patent metadata

Field	Value
Publication number	US-12580243-B2
Application number	US-202117926062-A
Country	US
Kind code	B2
Filing date	Feb 24, 2021
Priority date	Jun 26, 2020
Publication date	Mar 17, 2026
Grant date	Mar 17, 2026

Abstract

The battery pack according to one embodiment of the present disclosure includes: a lower pack housing including a plurality of module regions; a thermally conductive resin layer located in the module region; a battery module mounted on the module region and located on the thermally conductive resin layer; and an upper pack housing for covering the battery module, wherein the battery module comprises a battery cell stack in which a plurality of battery cells are stacked, and the battery cell stack directly contacts the thermally conductive resin layer, wherein the battery cell stack includes cooling fins located between battery cells adjacent to each other among the plurality of battery cells, and wherein the end portion of the cooling fin comes into contact with the thermally conductive resin layer.

First claim

The invention claimed is:

1 . A battery pack, comprising:
a lower pack housing including a plurality of module regions; a thermally conductive resin layer located in each of the plurality of module regions; a battery module mounted on each of the plurality of the module regions and located on the thermally conductive resin layer; and an upper pack housing for covering the battery module, wherein the battery module comprises a battery cell stack having a plurality of battery cells are stacked, and the battery cell stack directly faces the thermally conductive resin layer, wherein the battery cell stack comprises cooling fins, and each of the cooling fins is located between two battery cells adjacent to each other among the plurality of battery cells, wherein the end portion of the cooling fin comes into contact with the thermally conductive resin layer, and wherein at least a part of a lower end portion of a battery cell of the plurality of battery cells is exposed to be in contact with the thermally conductive resin layer.

2 . The battery pack according to claim 1 ,
wherein upper and lower surfaces and both side surfaces of the battery cell stack included in the battery module comprises exposed areas, the lower surface of the battery cell stack among the exposed areas faces the thermally conductive resin layer, and a direction in which the lower surface of the battery cell stack faces the thermally conductive resin layer, and a direction in which the battery cells are stacked are perpendicular to each other.

3 . The battery pack according to claim 1 ,
wherein the battery module further comprises an adhesive layer located between each of the cooling fins and the battery cell adjacent thereto, and wherein the both side surfaces of the cooling fin are fixed to the battery cell by the adhesive layer.

4 . The battery pack according to claim 3 ,
wherein the adhesive layer comprises at least one stripe-shaped adhesive portion, and the adhesive portion extends in a direction perpendicular to the stacking direction of the battery cell stack.

5 . The battery pack according to claim 3 ,
wherein the end portion of the cooling fin is fixed to the thermally conductive resin layer.

6 . The battery pack according to claim 3 ,
wherein the battery module further comprises fixing members located at both end portions of the battery cell stack.

7 . The battery pack according to claim 6 ,
wherein the fixing member surrounds four surfaces of the battery cell stack.

8 . The battery pack according to claim 6 ,
wherein the fixing member is arranged along the end portion of the battery cell spaced apart from the adhesive layer.

9 . The battery pack according to claim 1 ,
wherein the cooling fin is a plate material including aluminum.

10 . The battery pack according to claim 1 ,
wherein the battery module is mounted on the thermally conductive resin layer, and the end portion of the cooling fin comes into contact with the upper surface of the thermally conductive resin layer.

11 . The battery pack according to claim 1 ,
further comprising a plurality of partition walls partitioning the plurality of module regions, wherein a surface of an outermost battery cell among the plurality battery cells included in the battery cell stack and the partition wall face each other.

12 . The battery pack according to claim 1 ,
wherein the density of the cooling fins formed on the outer peripheral portion of the battery cell stack is higher than the density of the cooling fins formed in the central portion of the battery cell stack.

13 . A device comprising the battery pack of claim 1 .

14 . A battery module comprising:
a battery cell stack having a plurality of battery cells, wherein the battery cell stack comprises cooling fins, and each of the cooling fins is located between two battery cells adjacent to each other among the plurality of battery cells,
wherein upper and lower surfaces and both side surfaces of the battery cell stack included in the battery module comprise exposed areas, and
wherein an exposed area of the lower surface exposes at least a part of a lower end portion of a battery cell of the battery cell stack.

15 . The battery module according to claim 14 ,
wherein the battery module further comprises an adhesive layer located between each of the cooling fins and the battery cell adjacent thereto, and wherein the both side surfaces of the cooling fin are fixed to the battery cell by the adhesive layer.

16 . The battery module according to claim 15 ,
wherein the adhesive layer comprises at least one stripe-shaped adhesive portion, and the adhesive portion extends in a direction perpendicular to the stacking direction of the battery cell stack.

17 . The battery module according to claim 15 , further comprising a fixing member located at an end portion of the battery cell stack.

18 . The battery module according to claim 17 ,
wherein the fixing member surrounds four surfaces of the battery cell stack.

19 . The battery module according to claim 17 ,
wherein the fixing member is arranged along the end portion of the battery cell spaced apart from the adhesive layer.

20 . The battery module according to claim 14 ,
wherein the cooling fin is a plate material including aluminum.

Assignees

• Lg Energy Solution Ltd

Inventors

• Park Subin
• Seong Junyeob
• Park Won Kyoung

Classifications

• H01M50/204

  Racks, modules or packs for multiple batteries or multiple cells · CPC title

• H01M10/6551 Primary

  Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings · CPC title

• H01M10/625

  Vehicles · CPC title

• H01M10/613

  Cooling or keeping cold · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title