The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 15, 2022
Filed:
Mar. 18, 2020
Hitachi, Ltd., Tokyo, JP;
Emhabayu Miftahullatif, Tokyo, JP;
Toru Kouno, Tokyo, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
Provided is a battery estimation system comprising a processor and a storage device coupled to the processor. The storage device stores accelerated test data obtained by measuring change in degree of deterioration of a rechargeable battery cell at a predetermined temperature. The processor calculates a relationship between the temperature and the magnitude of an activation energy of the rechargeable battery cell on the basis of the accelerated test data, calculates a temperature as a maximum temperature on the basis of the relationship between the temperature and the magnitude of the activation energy of the rechargeable battery cell, the calculated temperature being a temperature at which the magnitude of the activation energy changes from decreasing to increasing in response to increase in the temperature, and determines a temperature equal to or less than the maximum temperature as a temperature to be used in an accelerated test.