# US 12,191,462 B2 · Battery module and method of manufacturing the same

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- Number: US 12,191,462 B2
- Document ID: US12191462B2
- Status: Granted
- Kind: B2
- Application number: 17/267,673
- Filed: 2020-02-20
- Published: 2021-10-07
- Granted: 2025-01-07
- Earliest claimed: 2019-02-21
- Assignees: LG Energy Solution, Ltd.
- Applicants: LG Chem, Ltd.
- Inventors: Yongjin Cho; Junyeob Seong; Jinwoo Park; Tae Geun Kim
- Web page: https://patentgrep.com/patent/US12191462B2

## CPC

- H01M 10/488: {Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density}
- G01N 23/046: using tomography, e.g. computed tomography [CT]
- H01M 10/4285: {Testing apparatus}
- H01M 10/48: Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569)
- H01M 10/613: Cooling or keeping cold
- H01M 10/653: characterised by electrically insulating or thermally conductive materials
- H01M 10/655: Solid structures for heat exchange or heat conduction
- H01M 50/209: adapted for prismatic or rectangular cells (H01M50/216 takes precedence)
- H01M 50/211: adapted for pouch cells
- H01M 50/224: Metals
- H01M 50/227: Organic material
- H01M 50/229: Composite material consisting of a mixture of organic and inorganic materials
- H01M 50/231: having a layered structure
- H01M 50/233: characterised by physical properties of casings or racks, e.g. dimensions
- G01N 2223/419: computed tomograph
- H01M 50/24: adapted for protecting batteries from their environment, e.g. from corrosion (thermal insulation H01M10/658)
- Y02E 60/10: Energy storage using batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A battery module includes: a module frame including a lower plate and a side wall defining an internal space; a battery cell stack disposed in the internal space of the module frame and including a plurality of battery cells that are stacked to be adjacent to each other side by side; and a resin layer disposed between the lower plate and the battery cell stack and including a detection agent, wherein the lower plate includes at least one injection hole.

## Claims

### Claim 1

A battery module comprising:
a module frame including a lower plate and a side wall defining an internal space;
a battery cell stack disposed in the internal space of the module frame and including a plurality of battery cells that are stacked to be adjacent to each other side by side; and
a resin layer disposed between the lower plate and the battery cell stack and including a detection agent,
wherein the lower plate includes at least one injection hole, and
wherein the detection agent is a contrast agent detectable through a solid portion of the lower plate without an optical observation of the resin layer.

### Claim 2 (depends on 1)

The battery module of claim 1, wherein
the resin layer includes a thermally conductive resin.

### Claim 3 (depends on 1)

The battery module of claim 1, wherein
the contrast agent is comprised of a plurality of particles.

### Claim 4 (depends on 3)

The battery module of claim 3, wherein
each of the particles of the plurality of particles is comprised of a compound or a complex containing a metal.

### Claim 5 (depends on 4)

The battery module of claim 4, wherein
the metal is lead, barium, or gadolinium.

### Claim 6 (depends on 3)

The battery module of claim 3, wherein
each of the particles of the plurality of particles has a diameter of 0.001 μm to 80 μm.

### Claim 7 (depends on 1)

A battery pack comprising:
at least one battery module according to claim 1;
a pack case configured to package the at least one battery module.

### Claim 8 (depends on 7)

A device comprising:
at least one battery pack according to claim 7.