发明名称 |
SECONDARY BATTERY STATE DETECTION DEVICE AND SECONDARY BATTERY STATE DETECTION METHOD |
摘要 |
<p>Object: To accurately determine whether or not it is possible to start an engine while accurately detecting a degree of deterioration of a secondary battery. Solution: In a secondary battery state detecting device 1 detecting a state of a secondary battery mounted on a vehicle, a measurement unit (a voltage sensor (11), a current sensor (12), a CPU (10a)) measuring a value of an internal resistance of the secondary battery at an engine stop time; an estimation unit (CPU 10a) estimating a value of a diffusion resistance resulting from diffusion of an ion generated at an electrolytic solution of the secondary battery by supplying electric power to a starter motor at a starting time of the engine; and a calculation unit (CPU 10a) calculating a starting voltage being a voltage required for the starting of the engine from a resistance value obtained by adding the value of the diffusion resistance estimated by the estimation unit to the value of the internal resistance measured by the measurement unit, a starting current flowing when the engine is started, and a voltage before starting of the secondary battery are included.</p> |
申请公布号 |
EP2778701(A1) |
申请公布日期 |
2014.09.17 |
申请号 |
EP20130757320 |
申请日期 |
2013.03.01 |
申请人 |
FURUKAWA ELECTRIC CO., LTD.;FURUKAWA AUTOMOTIVE SYSTEMS INC. |
发明人 |
SATO, ETSUZO;SUGIMURA, TAKEZO;WATANABE, YUICHI |
分类号 |
G01R31/36;B60R16/04;F02N11/08;H01M10/48;H02J7/00 |
主分类号 |
G01R31/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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