# US 2019/0173293 A1 · Battery module

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

- Number: US 2019/0173293 A1
- Document ID: US20190173293A1
- Status: Published application
- Kind: A1
- Application number: 16/209,348
- Filed: 2018-12-04
- Published: 2019-06-06
- Earliest claimed: 2017-12-05
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Applicants: Toyota Jidosha Kabushiki Kaisha
- Inventors: Mizuho Matsumoto
- Web page: https://patentgrep.com/patent/US20190173293A1

## CPC

- H01M 10/443: {in response to temperature}
- H01M 10/486: {for measuring temperature}
- H02J 7/445: {in response to measured battery parameters, e.g. voltage, current or temperature profile}
- H02J 7/975: {in response to temperature}
- H01M 50/15: for prismatic or rectangular cells (H01M50/153 takes precedence)
- Y02E 60/10: Energy storage using batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A battery module includes a secondary battery, temperature detection unit that detects temperature information about the secondary battery, and a control device that controls charging and discharging of the secondary battery on the basis of the temperature information detected by the temperature detection unit. In the battery module, a level difference (recess) is provided on the surface of at least one of the secondary battery and the temperature sensor such that a space is formed at least at a central portion of a contact region at which the temperature sensor of the temperature detection unit and the secondary battery come into contact with each other. As a result, a space in which foreign matter can be accommodated can be formed, and accordingly the temperature information about the secondary battery can be detected with high precision by suitably bringing the temperature sensor and the secondary battery into contact with each other.

## Claims

### Claim 1

A battery module, comprising:
at least one secondary battery;
a temperature detection sensor that detects temperature information about the secondary battery, the temperature sensor comes into contact with the secondary battery; and
a control device that controls charging and discharging of the secondary battery on the basis of the temperature information detected by the temperature detection sensor, wherein
a level difference is provided at a surface of at least one of the secondary battery and the temperature sensor, in such a manner that a space is formed at least at a central portion of a contact region at which the secondary battery and the temperature sensor come into contact with other.

### Claim 2 (depends on 1)

The battery module according to claim 1, wherein a recess is formed on the surface of at least one of the secondary battery and the temperature sensor, and the space is formed at a position of the recess at which the secondary battery and the temperature sensor are brought into contact with each other.

### Claim 3 (depends on 2)

The battery module according to claim 2, wherein a surface area of the recess in a plan view is 1% to 5% of a surface area of the contact region.

### Claim 4 (depends on 3)

The battery module according to claim 3, wherein the recess in the plan view has a circular shape, and the circular recess has a diameter of 0.5 mm to 2 mm.

### Claim 5 (depends on 3)

The battery module according to claim 3, wherein the recess in the plan view has a square shape, and sides of the square recess each have a length of 0.5 mm to 2 mm.

### Claim 6 (depends on 2)

The battery module according to claim 2, wherein the recess has a depth of 0.3 mm to 1.0 mm.

### Claim 7 (depends on 1)

The battery module according to claim 1, wherein a protrusion is formed on the surface of at least one of the secondary battery and the temperature sensor, and a space surrounded by the protrusion is formed when the secondary battery and the temperature sensor are brought into contact with each other.

### Claim 8 (depends on 7)

The battery module according to claim 7, wherein the protrusion has a height of 0.2 mm to 1.0 mm.

### Claim 9 (depends on 1)

The battery module according to claim 1, wherein the control device is an electronic control unit.