Title:
蓄電デバイスの検査方法および製造方法
Document Type and Number:
Japanese Patent JP6907790
Kind Code:
B2
Abstract:
An external electric power supply is connected to a charged electric power storage device in a reverse voltage direction to form a circuit. A voltage of the external electric power supply is adjusted such that a current does not flow immediately after the connection. Then, current measuring of acquiring a converged current value of the current in the circuit due to a decrease in the voltage of the electric power storage device, and quality deciding based on the converged current value are performed. Before the quality deciding, the electric power storage device is grouped such that the converged current value of when the electric power storage device is a normal product is constant in a group. In the quality deciding, a degree of variation in the converged current value is calculated for each group, and the quality is determined by comparing the calculated degree of variation with its predetermined level.
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Inventors:
Sotomu Goto
Kobayashi
Kobayashi
Application Number:
JP2017152309A
Publication Date:
July 21, 2021
Filing Date:
August 07, 2017
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
G01R31/396; G01R31/367; H01G13/00; H01M10/04; H01M10/42; H01M10/44
Domestic Patent References:
| JP2016091872A | ||||
| JP2015073340A | ||||
| JP2015125900A | ||||
| JP2014239271A | ||||
| JP2008060722A | ||||
| JP2016081712A | ||||
| JP2008243440A |
Attorney, Agent or Firm:
Cosmos International Patent and Trademark Office