# US 12,181,446 B2 · Battery module simulation system and method

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- Number: US 12,181,446 B2
- Document ID: US12181446B2
- Status: Granted
- Kind: B2
- Application number: 17/802,739
- Filed: 2021-07-21
- Published: 2023-04-20
- Granted: 2024-12-31
- Earliest claimed: 2020-08-11
- Assignees: LG Energy Solution, Ltd.
- Applicants: LG Energy Solution, Ltd.
- Inventors: Dong Wook Kim; Jae Yeong Kim; Yong Il Kim
- Web page: https://patentgrep.com/patent/US12181446B2

## CPC

- G01N 3/12: Pressure testing
- G01N 3/18: Performing tests at high or low temperatures
- H01M 10/4285: {Testing apparatus}
- Y02E 60/10: Energy storage using batteries
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)
- 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

The present invention relates to a battery module simulation system and method for easily implementing pressure and temperature conditions in a battery module by easily changing the pressure and temperature applied to a battery cell in a pressure measurement test of the battery cell.

## Claims

### Claim 1

A system for simulating a battery module, the system comprising:
a case configured to accommodate a battery cell therein;
a charge/discharge unit configured to electrically connect to the battery cell;
a plurality of tubes configured to be disposed as a single layer on the one surface of the battery cell, each tube including a structure configured for a fluid to flow into;
a fluid supply unit configured to fluidly connect to the plurality of tubes and configured to supply the fluid to the plurality of tubes to thereby apply pressure to the battery cell;
a temperature controller configured to control a temperature of the fluid which has flowed into the plurality of tubes; and
a sensor unit disposed between the plurality of tubes and one surface of the case and configured to measure a pressure inside the case, wherein the system is configured to differently set the temperature applied to each region of the battery cell by individually setting the temperature of the fluid flowing into each of the plurality of tubes.

### Claim 2 (depends on 1)

The system of claim 1, wherein each of the plurality of tubes further includes a valve configured to control an inflow of the fluid.

### Claim 3 (depends on 1)

The system of claim 1, wherein each of the plurality of tubes includes the temperature controller.

### Claim 4 (depends on 1)

The system of claim 1, further comprising:
an output unit configured to connect to the sensor unit and configured to output a pressure value of an inside of the case; and
a storage unit configured to store the pressure value.

### Claim 5 (depends on 1)

The system of claim 1, wherein the case further includes first and second compression pads configured to be disposed on two surfaces of the battery cell, respectively.

### Claim 6 (depends on 1)

The system of claim 1, wherein each of the plurality of tubes further includes a soft or elastic material.

### Claim 7 (depends on 1)

The system of claim 1, wherein the fluid flowing into each of the plurality of tubes is in a liquid or gel state.

### Claim 8 (depends on 1)

The system of claim 1, wherein the sensor unit includes a pressure sensor having a planar structure.

### Claim 9 (depends on 1)

A method of simulating a battery module using the system of claim 1, the method comprising:
setting an inflow of the fluid and the temperature of the fluid flowing into the plurality of tubes to thereby apply the pressure to a battery cell accommodated by the case and control a temperature of the battery cell; and
inducing a swelling of the battery cell according to charge and discharge and measuring a pressure inside the case.

### Claim 10 (depends on 9)

The method of claim 9, further comprising individually setting the temperature of the fluid flowing into each of the plurality of tubes so as to differently set the temperature applied to each region of the battery cell.