# US 12,002,938 B2 · Battery rack and power storage device comprising same

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- Number: US 12,002,938 B2
- Document ID: US12002938B2
- Status: Granted
- Kind: B2
- Application number: 17/298,375
- Filed: 2020-05-12
- Published: 2022-01-06
- Granted: 2024-06-04
- Earliest claimed: 2019-06-05
- Assignees: LG Energy Solution, Ltd.
- Applicants: LG Energy Solution, Ltd.
- Inventors: Jae-Min Yoo; Jeong-O Mun; Eun-Gyu Shin; Yoon-Koo Lee
- Web page: https://patentgrep.com/patent/US12002938B2

## CPC

- H01M 10/6556: Solid parts with flow channel passages or pipes for heat exchange (closed pipes H01M10/6552)
- H01M 50/209: adapted for prismatic or rectangular cells (H01M50/216 takes precedence)
- H01M 10/613: Cooling or keeping cold
- H01M 10/627: Stationary installations, e.g. power plant buffering or backup power supplies
- H01M 10/647: Prismatic or flat cells, e.g. pouch cells
- H01M 10/658: by thermal insulation or shielding
- H01M 50/24: adapted for protecting batteries from their environment, e.g. from corrosion (thermal insulation H01M10/658)
- H01M 50/251: specially adapted for stationary devices, e.g. power plant buffering or backup power supplies
- H01M 50/383: Flame arresting or ignition-preventing means
- 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 rack includes a plurality of battery modules stacked on each other in a vertical direction; a rack case configured to accommodate the plurality of battery modules; and at least one firewall provided to at least one of both side surfaces of the rack case to prevent flame and heat from propagating toward an adjacent battery rack when a fire occurs.

## Claims

### Claim 1

A battery rack, comprising:
a plurality of battery modules stacked on each other in a vertical direction;
a rack case configured to accommodate the plurality of battery modules; and
at least one firewall provided to at least one side surface of the rack case to prevent flame and heat from propagating toward an adjacent battery rack when a fire occurs,
wherein the at least one firewall is fixed to both the rack case and the plurality of battery modules,
wherein the at least one firewall includes:
at least one case coupling portion for coupling with the rack case; and
at least one module coupling portion for coupling with the plurality of battery modules.

### Claim 2 (depends on 1)

The battery rack according to claim 1, wherein the battery rack is provided in plural,
wherein the plurality of battery racks are stacked in a horizontal direction, and
wherein the firewall is disposed between the plurality of battery racks along the horizontal direction, respectively.

### Claim 3 (depends on 1)

The battery rack according to claim 1, wherein the at least one firewall is provided in a plate shape to cover all side surfaces of the plurality of battery modules along the vertical direction.

### Claim 4 (depends on 1)

The battery rack according to claim 1, wherein the at least one firewall is fixed to the rack case and the plurality of battery modules by screwing using fastening members.

### Claim 5 (depends on 1)

The battery rack according to claim 1, wherein the at least one case coupling portion is a plurality of case coupling portions, and
wherein the plurality of case coupling portions are disposed to be spaced apart from each other by a predetermined distance along a vertical direction of the at least one firewall.

### Claim 6 (depends on 1)

The battery rack according to claim 1, wherein the at least one module coupling portion is a plurality of module coupling portions, and
wherein the plurality of module coupling portions are spaced apart from the case coupling portion by a predetermined distance and arranged to be spaced apart from each other by a predetermined distance along a vertical direction of the at least one firewall.

### Claim 7 (depends on 1)

The battery rack according to claim 1, wherein the at least one firewall has at least one cooling channel formed therein to cool the plurality of battery modules.

### Claim 8 (depends on 1)

An energy storage system, comprising:
at least one battery rack as defined in claim 1; and
a rack container configured to accommodate the at least one battery rack.