Sanyo Electric Co., Ltd.

Shinya Inui

Kimihiko Furukawa

Masato Nishikawa

Hidetsugu Mukae

Tomonori Kawamoto

Atsushi Hayashida

A monitoring device includes a first detection block, a second detection block, and a monitoring unit. Each of the first detection block and the second detection block includes one or more voltage detectors that detect voltages across power storage cells. The monitoring unit includes a complement processor that, when a circuit in the first detection block breaks down and the first detection block fails to transmit the states of the power storage cells to the monitoring unit, complements the states of the power storage cells that have not been acquired from the first detection block, based on the states of the power storage cells detected in the second detection block.

Monitoring device and power storage system

A monitoring system includes: a first monitor that receives, from a first output terminal, a voltage detected by a voltage detector and information on a circuit failure; a second monitor that receives, from a second output terminal, an abnormal voltage signal detected by the voltage detector; and a vehicle controller that electrically disconnects a driving motor from an electricity storing unit. When a circuit failure occurs in one circuit of a circuit on a side of the first output terminal and a circuit on a side of the second output terminal and a circuit failure does not occur in the other circuit, and the electricity storing unit is normal, the vehicle controller connects the driving motor with the electricity storing unit.

Monitoring system

A power supply device according to the present invention includes a detector, a memory, and a determinator. The detector detects internal resistance, temperature, and SOC of a battery. The memory stores record data and a predetermined SOC range as storage data. The record data is used for estimating standardized available power at standard SOC temperature corresponding to the detected internal resistance and temperature. If the detected SOC of the battery falls within the range, the determinator estimates standardized available power at the standard SOC and temperature based on the detected internal resistance and temperature, and the record data. When the internal resistance, temperature, and SOC are detected by the detector, if the detected SOC falls within the range, the determinator estimates standardized available power at standard SOC temperature based on the detected internal resistance and temperature, and the record data.

Power supply device and vehicle including the same

A car power source apparatus is provided with a driving battery which drives an electric motor, heaters which heat the driving battery, a control circuit which controls power to the heaters, a temperature sensor which detects battery temperature and issues a detected temperature signal to the control circuit, and a surrounding temperature sensor which detects surrounding temperature and also issues a detected temperature signal to the control circuit. When the car is not being driven and the driving battery is heated via the heaters powered by the driving battery, the set temperature is changed corresponding to the detected surrounding temperature in the control circuit.

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Hyogo, Japan

Shinya Inui