Title:
電池装置
Document Type and Number:
Japanese Patent JP7115294
Kind Code:
B2
Abstract:
To provide a battery device capable of precisely detecting a charged state.SOLUTION: A battery device 1 includes: a secondary battery 10; a resistance value acquisition unit 20; a deterioration degree estimation unit 30; and a charged state estimation unit 40. The secondary battery 10 is made of a lithium ion battery. The resistance value acquisition unit 20 acquires a charge resistance value Ri and a discharge resistance value Ro in the secondary battery 10. The deterioration degree acquisition unit 30 estimates a deterioration degree D in the secondary battery 10 on the basis of one of the charge resistance value Ri and the discharge resistance value Ro acquired by the resistance value acquisition unit 20 or a first relation value Rx derived from the charge resistance value Ri and the discharge resistance value Ro. The charged state estimation unit 40 estimates a charged state of the secondary battery 10 on the basis of the other of the charge resistance value Ri and the discharge resistance value Ro acquired by the resistance value acquisition unit 20 or a second relation value Ry derived from the charge resistance value Ri and the discharge resistance value Ro and the deterioration degree D estimated by the deterioration degree estimation unit 30.SELECTED DRAWING: Figure 1
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Inventors:
Tomoki Yamane
Kiwa Adachi
Kiwa Adachi
Application Number:
JP2018240436A
Publication Date:
August 09, 2022
Filing Date:
December 24, 2018
Export Citation:
Assignee:
株式会社デンソー
International Classes:
G01R31/392; G01R31/389; H01M4/485; H01M4/58; H01M4/587; H01M10/48; H02J7/00
Domestic Patent References:
| JP2018148720A | ||||
| JP2010078530A | ||||
| JP2012026771A | ||||
| JP2016058368A |
Foreign References:
| WO2015133068A1 |
Attorney, Agent or Firm:
Patent Business Corporation Aichi International Patent Office