Title:
STORAGE BATTERY DETERIORATION DIAGNOSIS DEVICE AND STORAGE BATTERY DETERIORATION DIAGNOSIS METHOD
Document Type and Number:
WIPO Patent Application WO/2022/168151
Kind Code:
A1
Abstract:
In this invention, after the temperature of a storage battery (100) has risen to a predetermined diagnosis temperature, a charge/discharge control unit (12) controls a charge/discharge circuit (4) so as to charge or discharge the storage battery (100). A current/voltage detection unit (5) detects the current and voltage of the storage battery (100) during the period when the storage battery (100) is being charged or discharged. A differential voltage calculation unit (13) calculates the differential voltage of the storage battery (100) on the basis of the detected current and voltage. A deterioration state estimation unit (14) estimates the deterioration state of the storage battery (100) on the basis of the variation in the calculated differential voltage.
Inventors:
HIRAI SEIJI (JP)
TAKEGAMI TOMOKI (JP)
TAKEGAMI TOMOKI (JP)
Application Number:
PCT/JP2021/003706
Publication Date:
August 11, 2022
Filing Date:
February 02, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G01R31/392
Domestic Patent References:
| WO2019181138A1 | 2019-09-26 | |||
| WO2016147311A1 | 2016-09-22 | |||
| WO2019171688A1 | 2019-09-12 |
Foreign References:
| JP2011018533A | 2011-01-27 | |||
| JP2017168361A | 2017-09-21 | |||
| JP2013019709A | 2013-01-31 | |||
| JP2014163875A | 2014-09-08 | |||
| JP2020079723A | 2020-05-28 |
Attorney, Agent or Firm:
MURAKAMI, Kanako et al. (JP)
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