# US 12,224,461 B1 · Battery assembly

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- Number: US 12,224,461 B1
- Document ID: US12224461B1
- Status: Granted
- Kind: B1
- Application number: 18/600,772
- Filed: 2024-03-11
- Published: 2025-02-13
- Granted: 2025-02-11
- Earliest claimed: 2023-08-10
- Assignees: SK On Co., Ltd.
- Applicants: SK On Co., Ltd.
- Inventors: Yong Hun Jung
- Web page: https://patentgrep.com/patent/US12224461B1

## CPC

- H01M 50/593: Spacers; Insulating plates
- H01M 50/244: Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
- 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 assembly of the present disclosure includes: a plurality of battery cells each including a main body portion and an electrode tab protruding from the main body portion; a pocket member at least a part of which is disposed between an electrode tab of a first battery cell and an electrode tab of a second battery cell, among the plurality of battery cells; and an insulating member filled in an inner region of the pocket member.

## Claims

### Claim 1

A battery assembly comprising:
a plurality of battery cells each including a main body portion and an electrode tab protruding from the main body portion;
a pocket member at least a part of which is disposed between an electrode tab of a first battery cell and an electrode tab of a second battery cell, among the plurality of battery cells; and
an insulating member accommodated in an inner region of the pocket member,
wherein the pocket member comprises:
an outer surface facing the electrode tab of the first battery cell and the electrode tab of the second battery cell; and
an inner surface contacting the insulating member.

### Claim 2 (depends on 1)

The battery assembly according to claim 1, further comprising a module case accommodating the plurality of battery cells,
wherein the module case includes an upper case covering an upper end of the plurality of battery cells; and a lower case supporting a lower end of the plurality of battery cells.

### Claim 3 (depends on 2)

The battery assembly according to claim 2, wherein the insulating member is accommodated in the inner region through an inlet of the pocket member inserted to a hole formed at the lower case.

### Claim 4 (depends on 3)

The battery assembly according to claim 3, wherein the electrode tab of the first battery cell and the electrode tab of the second battery cell protrude in a first direction,
wherein each of the plurality of battery cells includes a pin that is stacked in a second direction perpendicular to the first direction and that protrudes at a lower end of the main body portion in a third direction perpendicular to the first direction and the second direction, and
wherein the lower case includes a seating portion into which the pin is inserted.

### Claim 5 (depends on 4)

The battery assembly according to claim 4, wherein the hole is formed in a region spaced from the seating portion along the first direction.

### Claim 6 (depends on 1)

The battery assembly according to claim 1, wherein the insulating member includes a foam, and
wherein the foam is cured within a reference time after being filled in the inner region.

### Claim 7 (depends on 6)

The battery assembly according to claim 6, wherein the foam is cured in a porous state.

### Claim 8 (depends on 1)

The battery assembly according to claim 1, wherein the pocket member is elongated by filling the insulating member.

### Claim 9 (depends on 1)

The battery assembly according to claim 1, wherein the outer surface of the pocket member further contacts with a main body portion of the first battery cell and a main body portion of the second battery cell.