# US 12,603,372 B2 · Fixing structure for a battery rack, energy storage system, and power generation system

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- Number: US 12,603,372 B2
- Document ID: US12603372B2
- Status: Granted
- Kind: B2
- Application number: 18/026,554
- Filed: 2021-09-28
- Published: 2023-10-19
- Granted: 2026-04-14
- Earliest claimed: 2020-09-28
- Assignees: LG Energy Solution, Ltd.
- Applicants: LG Energy Solution, Ltd.
- Inventors: Hee-Chan Kim; Kyung-Min Lee; Seung-Jun Lee; Kown Son; Goan-Su Jung; Jong-Soo Lee; Seung-Joon Jeon
- Web page: https://patentgrep.com/patent/US12603372B2

## CPC

- H01M 50/242: adapted for protecting batteries against vibrations, collision impact or swelling
- H01M 50/209: adapted for prismatic or rectangular cells (H01M50/216 takes precedence)
- H01M 50/244: Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
- H01M 50/251: specially adapted for stationary devices, e.g. power plant buffering or backup power supplies
- H01M 50/262: with fastening means, e.g. locks
- H01M 50/264: for cells or batteries, e.g. straps, tie rods or peripheral frames
- H01M 2220/10: Batteries in stationary systems, e.g. emergency power source in plant
- 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 arranged in one direction; and a rack case configured to accommodate the plurality of battery modules. The rack case includes a fixing unit including a main body part of a plate shape provided on a lower end portion of the rack case, and a fixing groove formed to be recessed from an edge of the main body part.

## Claims

### Claim 1

A battery rack comprising:
a plurality of battery modules arranged in a first direction; and
a rack case configured to accommodate the plurality of battery modules,
wherein the rack case comprises a fixer provided on a lower end portion of the rack case,
wherein the fixer comprises a main body part having a plate shape,
wherein the main body part comprises a fixing groove formed to be recessed in a second direction from an edge of the main body part, and
wherein the fixer comprises:
a restraining bar configured to protrude into the fixing groove; and
an accommodation groove having an internal space to accommodate at least a part of the restraining bar.

### Claim 2 (depends on 1)

The battery rack of claim 1, wherein the rack case comprises:
a shelf frame configured to mount the plurality of battery modules;
a front frame coupled to a front end of the shelf frame; and
a rear frame coupled to a rear end of the shelf frame.

### Claim 3 (depends on 2)

The battery rack of claim 2, wherein each of the front frame and the rear frame comprises:
a plurality of pillar portions extending in the first direction; and
a connector extending in a horizontal direction to connect upper portions of the plurality of pillar portions, and
wherein the main body part extends in the horizontal direction to connect lower end portions of the plurality of pillar portions.

### Claim 4 (depends on 3)

The battery rack of claim 3, wherein each of the front frame and the rear frame comprises a bracket, the bracket comprising:
a horizontal section mounted on the fixer and including a slit groove having a shape corresponding to the fixing groove; and
a vertical section having a shape bent and extending in the first direction from an end portion of the horizontal section and configured to be bolt-fastened to a pillar portion of the plurality of pillar portions.

### Claim 5 (depends on 1)

The battery rack of claim 1, wherein the fixing groove comprises:
a taper portion having a width that is gradually reduced in the second direction; and
an accommodation portion further recessed in the second direction from the taper portion.

### Claim 6 (depends on 5)

The battery rack of claim 5, wherein the restraining bar is configured to protrude into the fixing groove to partition between the taper portion and the accommodation portion.

### Claim 7 (depends on 6)

The battery rack of claim 6, wherein the fixer further comprises an elastic member provided in the accommodation groove and configured to pressurize the restraining bar to protrude from the accommodation groove.

### Claim 8 (depends on 1)

The battery rack of claim 1, wherein the fixer further comprises a guide extending outwardly from the edge of the main body part in the second direction so as to guide a movement of the fixer.

### Claim 9 (depends on 8)

The battery rack of claim 8, wherein the guide is bent upward at a predetermined angle, and comprises an extension groove formed to be recessed from a protruding and extending edge.

### Claim 10 (depends on 1)

An energy storage system comprising at least one battery rack according to claim 1.

### Claim 11 (depends on 10)

The energy storage system of claim 10, comprising two or more battery racks stacked in the first direction,
wherein, among the two or more battery racks, a first battery rack located below a second battery rack comprises:
a bolt hole formed in an upper portion of the rack case; and
a bolt fixed to the bolt hole, and
wherein the bolt fixed to the bolt hole is configured to be inserted into the fixing groove of the second battery rack.

### Claim 12 (depends on 1)

A power generation system comprising at least one battery rack according to claim 1.