# US 11,114,712 B2 · Battery module having improved cooling structure

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- Number: US 11,114,712 B2
- Document ID: US11114712B2
- Status: Granted
- Kind: B2
- Application number: 15/554,305
- Filed: 2016-09-01
- Published: 2018-02-22
- Granted: 2021-09-07
- Earliest claimed: 2015-09-02
- Assignees: LG Chem, Ltd.
- Applicants: LG Chem, Ltd.
- Inventors: Yoon-Koo Lee; Mi-Geum Choi; Jeong-O Mun
- Web page: https://patentgrep.com/patent/US11114712B2

## CPC

- H01M 10/647: Prismatic or flat cells, e.g. pouch cells
- H01M 10/613: Cooling or keeping cold
- H01M 10/6551: Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
- H01M 10/6554: Rods or plates
- H01M 50/119: Metals
- H01M 50/121: Organic material
- H01M 50/124: having a layered structure
- H01M 50/211: adapted for pouch cells
- H01M 50/548: on opposite sides of the cell
- H01M 50/557: Plate-shaped terminals
- H01M 2220/30: Batteries in portable systems, e.g. mobile phone, laptop
- Y02E 60/10: Energy storage using batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A battery module having an improved cooling structure according to an embodiment of the present disclosure comprises: a pouch cell laminate comprising a first pouch cell and a second pouch cell located adjacent to the first pouch cell; and cooling fins configured to surround the circumference of an accommodation portion of each of the first pouch cell and the second pouch cell.

## Claims

### Claim 1

A battery module comprising:
a pouch cell laminate comprising a first pouch cell and a second pouch cell located adjacent to the first pouch cell, each pouch cell comprising:
an accommodation portion for containing an electrode assembly, the accommodation portion having a top wall, a bottom wall and a sidewall, the sidewall forming an outer circumference of the accommodation portion;
a sealing portion extending outwardly from the outer circumference of the accommodation portion; and
an electrode lead extending outwardly from the sealing portion;
a first cooling fin having such a size and a shape to contact and surround the sidewall forming the outer circumference of the accommodation portion and contacts the sealing portion of each of the first pouch cell and the second pouch cell; and
a cooling plate located on one side of the pouch cell laminate and configured to contact the first cooling fin perpendicularly to a planar direction of the first cooling fin,
wherein the first cooling fin has a first side, a second side, a first end and a second end,
wherein each pouch cell comprises two electrode leads that extend outwardly from the sealing portion at opposite ends of each pouch cell that correspond to the first end and the second end of the first cooling fin,
wherein the cooling plate directly contacts the first side of the first cooling fin and the cooling plate does not overlap the two electrode leads that extend outward from the sealing portion.

### Claim 2 (depends on 1)

The battery module of claim 1, wherein the first cooling fin is composed of an aluminum material.

### Claim 3 (depends on 1)

The battery module of claim 1, wherein the top wall of the accommodation portion of the first pouch cell and the bottom wall of the accommodation portion of the second pouch cell are in contact with each other.

### Claim 4 (depends on 1)

The battery module of claim 1, further comprising a third pouch cell, the third pouch cell comprising an accommodation portion for containing an electrode assembly, the accommodation portion having a top wall, a bottom wall and a sidewall, the sidewall forming an outer circumference of the accommodation portion and a sealing portion extending outwardly from the outer circumference of the accommodation portion; and
a second cooling fin, the second cooling fin contacting and surrounding the sidewall forming the outer circumference of the accommodation portion and contacts the sealing portion of each of the second pouch cell and the third pouch cell.

### Claim 5 (depends on 4)

The battery module of claim 4, wherein the second cooling fin has a first side, a second side, a first end and a second end, and
wherein the cooling plate directly contacts the first side of the second cooling fin.

### Claim 6 (depends on 4)

The battery module of claim 4, wherein the first cooling fin simultaneously surrounds the sidewalls forming the outer circumferences of the accommodating portions of the first pouch cell and the second pouch cell, and
wherein the second cooling fin simultaneously surrounds the sidewalls forming the outer circumferences of the accommodating portions of the second pouch cell and the third pouch cell.

### Claim 7 (depends on 1)

The battery module of claim 1, wherein the sealing portion of each pouch cell has a width, and
wherein a width of the first cooling fin is equal to a width of each pouch cell.

### Claim 8 (depends on 1)

The battery module of claim 1, wherein the sealing portion and the two electrode leads extend further outwardly from the first cooling fin only from the first end and the second end, and not from the first side and the second side.

### Claim 9 (depends on 1)

The battery module of claim 1, wherein the first cooling fin simultaneously surrounds the sidewalls forming the outer circumferences of the accommodating portions of the first pouch cell and the second pouch cell.