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:
Jun. 02, 2020
Filed:
Aug. 09, 2018
Tadahiro Yoshida, Kanagawa, JP;
Tadahiro Yoshida, Kanagawa, JP;
Envision AESC Energy Devices Ltd., Sagamihara-shi, Kanagawa, JP;
Abstract
A battery pack () includes a plurality of battery cells () which are connected in series to each other, a voltage and current measurement unit (voltage and current measurement unit ()), a temperature measurement unit (temperature measurement unit ()), and a calculation unit (calculation unit ()) provided in an arithmetic operation communication unit (). The calculation unit () calculates a 'first electric energy balance' of the battery cells () on the basis of voltages and currents, determines internal resistances of the battery cells () on the basis of the temperatures, and calculates a 'second electric energy balance' of the internal resistances on the basis of currents and the internal resistances. Thereby, the calculation unit () calculates an “accumulated electric energy balance” (electric energy E(t)) accumulated in the battery cells () on the basis of the first electric energy balance of the battery cells () and the second electric energy balance of the internal resistances.