Denso Corporation

Akihiko Ito

Tatsuhiro Numata

Yasuhito Tanabe

Akira Sumi

Dachao Wang

A vehicular power supply system includes a sensor unit that detects a battery state of a storage battery and a control unit that performs instruction to perform energization and interruption thereof between the storage battery and the electrical load based on the battery state. The sensor unit includes a detection unit that detects the battery state of the storage battery, a switch drive unit that performs drive control of a switch unit provided between the storage battery and the electrical load, and a control unit that controls the switch drive unit. The control unit switches between the energization and interruption thereof between the storage battery and the electrical load. If determining an abnormality, the control unit determines whether to maintain the energization between the storage battery and the electrical load based on the battery state and switches between the energization and interruption thereof based on the determination.

Vehicular power supply system

A battery monitoring apparatus includes a battery ECU, satellite devices each of which measures the voltage at a battery cell in response to a command signal from the battery ECU, and a wireless module which achieves a wireless communication between the battery ECU and each of the satellite devices after a wireless connection between the battery ECU and each of the satellite devices is completed. when receiving a start signal outputted before a start switch for a drive power source of the vehicle is turned on, the wireless module is activated to start the wireless connection between the battery ECU and each of the satellite devices. This establishes and completes the wireless connections faster than when the wireless module is activated simultaneously with turning on of the start switch for the drive power source. This achieves quick monitoring of the state of the battery cells.

Battery monitoring apparatus

A battery monitoring apparatus includes a battery ECU, satellite devices each of which measures the voltage at a battery cell in response to a command signal from the battery ECU, and a wireless module which achieves a wireless communication between the battery ECU and each of the satellite devices after a wireless connection between the battery ECU and each of the satellite devices is completed. When receiving a start signal outputted before a start switch for a drive power source of the vehicle is turned on, the wireless module is activated to start the wireless connection between the battery ECU and each of the satellite devices. This establishes and completes the wireless connections faster than when the wireless module is activated simultaneously with turning on of the start switch for the drive power source. This achieves quick monitoring of the state of the battery cells.

Growing community of inventors

Kariya, Japan

Akihiko Ito