Method of manufacturing a battery

Patent metadata

Field	Value
Publication number	US-10436668-B2
Application number	US-201715848928-A
Country	US
Kind code	B2
Filing date	Dec 20, 2017
Priority date	Apr 19, 2013
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

A method for manufacturing a battery is provided and including preparing the battery comprising an exterior material, the exterior material comprising a sealed portion; housing at least the sealed portion of the battery in a space portion of a chamber; providing the space portion into a pressurized state; and opening a partial portion of the battery other than the sealed portion to an atmosphere.

First claim

The invention is claimed as follows:

1. A method for manufacturing a battery, the method comprising:
providing a positive electrode and a negative electrode to prepare the battery;
covering the battery with an exterior material comprising a sealed portion;
housing at least the sealed portion of the battery in a space portion of a chamber of an inspection apparatus;
providing the space portion into a pressurized state;
opening a partial portion of the battery other than the sealed portion to an atmosphere; and
measuring an amount of swelling deformation of the partial portion of the battery by using a displacement sensor.

2. The method of claim 1 comprising determining a sealing failure of the battery based on an amount of the swelling deformation.

3. The method of claim 2 comprising comparing the amount of the swelling deformation with a predetermined value.

4. The method of claim 1 comprising providing an isolated-space-forming portion to spatially isolate the partial portion of the battery within the space portion.

5. The method of claim 1 comprising providing the chamber in a vacuum state.

6. The method of claim 1 comprising:
providing a pressure controller connected to a pressurizer and the chamber;
adjusting a pressure of a gas supplied from the pressurizer into a predetermined pressure; and
supplying the gas into the chamber.

7. The method of claim 1 further comprising providing an electrolytic solution and an electrolyte to prepare the battery.

Assignees

• Murata Manufacturing Co

Inventors

• Baba Mamoru
• Sato Takeshi
• Kitaura Masaaki

Classifications

• G01M3/363 Primary

  the structure being removably mounted in a test cell · CPC title

• H01M10/4285

  Testing apparatus · CPC title

• H01M10/0481

  Compression means other than compression means for stacks of electrodes and separators · CPC title

• H01M10/48 Primary

  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) · CPC title

• G01R31/36

  Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] · CPC title