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:
Apr. 01, 2014
Filed:
Jul. 07, 2010
Yuji Nishi, Nagoya, JP;
Hidenori Takahashi, Okazaki, JP;
Masatoshi Tazawa, Okazaki, JP;
Masanobu Matsusaka, Handa, JP;
Keiji Kaita, Miyoshi, JP;
Yuji Nishi, Nagoya, JP;
Hidenori Takahashi, Okazaki, JP;
Masatoshi Tazawa, Okazaki, JP;
Masanobu Matsusaka, Handa, JP;
Keiji Kaita, Miyoshi, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Abstract
An alternating current impedance-estimating section () estimates an alternating current impedance (Rh) of the secondary battery based on electric current (I) and voltage (V) of the secondary battery detected when a ripple generating section causes a ripple current to flow in the secondary battery. A temperature estimating section () estimates the temperature (T) of the secondary battery based on the alternating current impedance (Rh) estimated by the alternating current impedance-estimating section () with the use of the relation, obtained in advance, between the temperature (T) of the secondary battery and the alternating current impedance (Rh) of the secondary battery at a ripple frequency.