Invention Grant
- Patent Title: Secondary battery temperature-estimating apparatus and method
- Patent Title (中): 二次电池温度估计装置及方法
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Application No.: US13382736Application Date: 2010-07-07
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Publication No.: US08684596B2Publication Date: 2014-04-01
- Inventor: Yuji Nishi , Hidenori Takahashi , Masatoshi Tazawa , Masanobu Matsusaka , Keiji Kaita
- Applicant: Yuji Nishi , Hidenori Takahashi , Masatoshi Tazawa , Masanobu Matsusaka , Keiji Kaita
- Applicant Address: JP Aichi-ken
- Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee Address: JP Aichi-ken
- Agency: Sughrue Mion, PLLC
- Priority: JP2009-161923 20090708
- International Application: PCT/IB2010/001668 WO 20100707
- International Announcement: WO2011/004249 WO 20110113
- Main IPC: G01K13/00
- IPC: G01K13/00 ; G01K1/00
Abstract:
An alternating current impedance-estimating section (106) 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 (108) estimates the temperature (T) of the secondary battery based on the alternating current impedance (Rh) estimated by the alternating current impedance-estimating section (106) 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.
Public/Granted literature
- US20120099618A1 SECONDARY BATTERY TEMPERATURE-ESTIMATING APPARATUS AND METHOD Public/Granted day:2012-04-26
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