# US 2014/0191764 A1 · Method for determining response characteristics of battery

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- Number: US 2014/0191764 A1
- Document ID: US20140191764A1
- Status: Published application
- Kind: A1
- Application number: 14/142,762
- Filed: 2013-12-28
- Published: 2014-07-10
- Earliest claimed: 2013-01-10
- Assignees: Yokogawa Electric Corporation
- Applicants: Yokogawa Electric Corporation
- Inventors: Makoto KAWANO; Tomomi AKUTSU; Nobuhiro TOMOSADA; Tetsuo YANO; Souichirou TORAI
- Web page: https://patentgrep.com/patent/US20140191764A1

## CPC

- G01R 31/389: Measuring internal impedance, internal conductance or related variables
- G01R 31/385: Arrangements for measuring battery or accumulator variables (for monitoring G01R31/382)
- G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12)

## Abstract

A method for determining response characteristics of a battery includes: pressurizing the battery in a direction to reduce a distance between electrode surfaces of the battery; and applying a voltage or a current to the pressurized battery to determine response characteristics of the battery.

## Claims

### Claim 1

A method for determining response characteristics of a battery, comprising:
pressurizing the battery in a direction to reduce a distance between electrode surfaces of the battery; and
applying a voltage or a current to the pressurized battery to determine response characteristics of the battery.

### Claim 2 (depends on 1)

The method for determining response characteristics of a battery according to claim 1, wherein, during the determination of the response characteristics, the distance between the electrode surfaces is kept constant by the pressurizing.

### Claim 3 (depends on 1)

The method for determining response characteristics of a battery according to claim 1, wherein the pressurizing the battery includes sandwiching the battery between pressurizing members.

### Claim 4 (depends on 1)

The method for determining response characteristics of a battery according to claim 1, further comprising correcting the determined response characteristics of the battery according to determination conditions at the determination of the response characteristics.

### Claim 5 (depends on 1)

The method for determining response characteristics of a battery according to claim 1, wherein the determination of the response characteristics includes determining impedances of the battery as response characteristics of the battery.

### Claim 6 (depends on 1)

The method for determining response characteristics of a battery according to claim 1, wherein an internal state of the battery is adjusted by giving the pressurized battery a specific experience of charge and discharge prior to the determination of the response characteristics.

### Claim 7 (depends on 1)

A device for determining response characteristics of a battery using the method for determining response characteristics of a battery according to claim 1, the device comprising:
a pressurization unit that pressurizes the battery in a direction to reduce a distance between electrode surfaces of the battery; and
a response characteristic determination unit that applies a voltage or a current to the battery pressurized by the pressurization unit to determine response characteristics of the battery.

### Claim 8 (depends on 7)

The device for determining response characteristics of a battery according to claim 7, wherein
the pressurization unit includes a pair of pressurizing plates sandwiching the battery therebetween, and includes a plurality of fixing tools tightening the pressurizing plates.