State judging device and control device of secondary battery

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8741459
APP PUB NO 20100247988A1
SERIAL NO

12731299

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Abstract

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A device which judges a change of a capacity balance between a cathode and an anode of a secondary battery in a non-destructive manner is provided. The secondary battery has one of the capacities of the cathode and the anode greater than the other capacity. A battery ECU calculates an internal resistance (DCIR) of the secondary battery based on a current and a voltage of the secondary battery. When the calculated internal resistance (DCIR) is higher than the initial state in a low SOC region or a high SOC region, the battery ECU judges that the capacity balance between the cathode and the anode of the secondary battery has changed.

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Patent Owner(s)

Patent OwnerAddress
PANASONIC EV ENERGY CO LTD20 OKASAKI KOSAI-SHI SHIZUOKA 431-0422

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Maegawa, Katsunori Toyohashi, JP 22 330
Okumura, Motoyoshi Chiryu, JP 59 332

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