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:
May. 07, 2019
Filed:
Aug. 31, 2017
Primearth Ev Energy Co., Ltd., Kosai-shi, Shizuoka, JP;
PRIMEARTH EV ENERGY CO., LTD., Kosai-Shi, JP;
Abstract
A battery capacity measuring device that measures the battery capacity of a rechargeable battery includes an impedance measurement unit that measures the complex impedance of a rechargeable battery, which is a subject to measurement, based on application of measurement AC power, a parameter calculation unit that calculates a parameter that is a ratio of a difference between measured angular speeds of two complex impedances having different measured angular speeds in a diffusion region among a plurality of measured complex impedances to a difference between components of the two complex impedances, and a capacity calculation unit that calculates the capacity of the rechargeable battery based on information that is set in advance and indicates the relationship between the capacity of the rechargeable battery and the parameter and a parameter calculated by the parameter calculation unit.