Title:
BATTERY LIFE DIAGNOSIS AND DIAGNOSTIC CIRCUIT
Document Type and Number:
Japanese Patent JP2017090426
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To measure a current by branch resistance while successively measuring the variation of voltage of a battery, and determine DiR from the voltage and the current to predict the residual amount of the battery by a calculation formula on the basis of a theoretical background.SOLUTION: A measuring device using a microcomputer technology is constituted of means for promptly detecting the behavior of the degree (SOH) of deterioration and power storage residual amount (SOC) of a secondary battery with high accuracy, and improvement in prediction performance using a dynamic internal resistance (DiR) and an output voltage is achieved from a measured value for each charging step.SELECTED DRAWING: Figure 2
Inventors:
TAKAOKA HIROMI
ITO TOMOYA
TAKEMOTO HISAO
NAGAYOSHI KENGO
FUJIWARA TAKAMICHI
ITO TOMOYA
TAKEMOTO HISAO
NAGAYOSHI KENGO
FUJIWARA TAKAMICHI
Application Number:
JP2015236102A
Publication Date:
May 25, 2017
Filing Date:
November 13, 2015
Export Citation:
Assignee:
GOIKU BATTERY CO LTD
International Classes:
G01R31/36; H01M10/48; H02J7/00
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