Power cutoff device

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12194866
APP PUB NO 20220250481A1
SERIAL NO

17618799

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A power cutoff device includes a relay unit including a switch having a connecting state and a cutoff state, a cutoff unit connected in series to the switch, a current detector to detect an object current flowing through the cutoff unit, and a controller to control the relay unit and the cutoff unit. The cutoff unit has a connecting state and an irreversible cutoff state. The controller obtains a changing rate of the object current with respect to time. The controller causes the switch to be in the connecting state and causes the cutoff unit to be in the connecting state if determining that the changing rate is not greater than a changing-rate threshold. The controller causes the relay unit to be in the cutoff state and cause the cutoff unit to be in the irreversible cutoff state if determining that the changing rate is greater than the changing-rate threshold.

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Patent Owner(s)

Patent OwnerAddress
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD22-6 MOTO-MACHI KADOMA-SHI OSAKA 571-0057

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hirobe, Takashi Osaka, JP 1 0
Kazama, Shun Osaka, JP 32 559
Okamoto, Tatsuya Osaka, JP 60 325

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