# US 12,218,320 B2 · Battery module and manufacturing method therefor

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 12,218,320 B2
- Document ID: US12218320B2
- Status: Granted
- Kind: B2
- Application number: 16/487,295
- Filed: 2018-08-24
- Published: 2019-12-05
- Granted: 2025-02-04
- Earliest claimed: 2017-08-29
- Assignees: LG Energy Solution, Ltd.
- Applicants: LG Chem, Ltd.
- Inventors: Ji Ho Yun; Sang Jin Kim
- Web page: https://patentgrep.com/patent/US12218320B2

## CPC

- H01M 10/425: {Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00)}
- 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 10/482: {for several batteries or cells simultaneously or sequentially}
- H01M 10/486: {for measuring temperature}
- H01M 50/213: adapted for cells having curved cross-section, e.g. round or elliptic (H01M50/209, H01M50/216 take precedence)
- H01M 50/502: Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M 50/559: Terminals adapted for cells having curved cross-section, e.g. round, elliptic or button cells (H01M50/553 takes precedence)
- H01M 50/581: in response to temperature
- H01M 50/548: on opposite sides of the cell
- H01M 50/562: characterised by the material
- H01M 50/586: inside the batteries, e.g. incorrect connections of electrodes
- H01M 2200/106: PTC
- 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 module and a manufacturing method therefor are provided. The battery module includes a pair of cylindrical battery cells, a pair of PTC elements at one side of the pair of battery cells, a connection member at an opposite side of the pair of cylindrical battery cells from the one side of the pair of cylindrical battery cells, and a connector having four wires connected to a single connection terminal and configured to electrically connect an external system and the pair of cylindrical battery cells via the connection terminal is provided.

## Claims

### Claim 1

A battery module, comprising:
a pair of cylindrical battery cells, each battery cell comprising a positive electrode terminal and a negative electrode terminal which face different directions, and the battery cells being arranged to be in close contact with or adjacent to each other;
a pair of PTC elements provided at one end of the pair of battery cells, a first PTC element of the pair of PTC elements being provided to the positive electrode terminal at the one end of the pair of cylindrical battery cells and a second PTC element of the pair of PTC elements being provided to the negative electrode terminal at the one end of the pair of cylindrical battery cells;
a connection member configured to electrically connect the positive electrode terminal and the negative electrode terminal which are at an opposite end of the pair of cylindrical battery cells from the one end of the pair of cylindrical battery cells;
a connector having a structure in which four wires are connected to a single connection terminal and is configured to electrically connect an external system and the pair of cylindrical battery cells via the connection terminal, the connector including a thermistor; and
a coupling valley provided in a region in which the pair of cylindrical battery cells are arranged to be in close contact with or adjacent to each other,
wherein the pair of PTC elements and the four wires extend in the coupling valley.

### Claim 2 (depends on 1)

The battery module of claim 1, wherein the four wires of the connector include:
a first wire connected to the first PTC element;
a second wire connected to the connection member; and
third and fourth wires which are connected to the second PTC element through a bonding part formed on a portion of the third wire.

### Claim 3 (depends on 2)

The battery module of claim 2, wherein the third and fourth wires form a single structure via the thermistor.

### Claim 4 (depends on 2)

The battery module of claim 2, wherein the bonding part of the third wire is formed by removing a predetermined range of a coating of the third wire.

### Claim 5 (depends on 1)

The battery module of claim 1, wherein each of the first and second PTC elements is bent from an upper portion of a corresponding one of the battery cells and extends along a side surface of the corresponding one of the battery cells.

### Claim 6 (depends on 1)

The battery module of claim 1, further comprising an insulating member on at least one of the first and second PTC elements and an insulating member on the connection member.