Panasonic Intellectual Property Management Co., Ltd.

Masatoshi Nakase

Hiroki Akashi

Masafumi Nakamura

Yuta Nagatomi

Kinya Kato

Yohsuke Mitani

A backup power supply system () includes a first terminal (T), a second terminal (T), a disconnect device (), a current detector (), a charge/discharge device (), an auxiliary power supply (), and a controller (). The disconnect device () is connected between the first terminal (T) configured to be connected to a main power supply () and the second terminal (T) configured to be connected to a load (). The charge/discharge device () is connected between the auxiliary power supply () and a node (P) between the disconnect device () and the second terminal (T). The charge/discharge device () is configured to receive power supplied from main power supply () to cause a charging current to flow to the auxiliary power supply () in a non-defective state in which the main power supply () is not defective. The charge/discharge device () is configured to receive power supplied from the auxiliary power supply () to cause a discharging current to flow to the load () in a defective state. The controller () is configured to have the disconnect device () be in a connecting state while the current detector () does not detect the discharging current, and to have the disconnect device () be in a disconnecting state while the current detector () detects the discharging current.

Backup power supply system, mobile object, backup power supply system controlling method, and program

A backup power supply system is designed to supply, when a power supply has caused a failure, power from a first electrical storage device to a plurality of loads. The plurality of loads includes a first load and a second load. The first load is connected to a first power supply line. The backup power supply system includes a backflow prevention switch provided between the first load and the second load on the first power supply line and making the first power supply line electrically conductive or non-conductive by turning ON and OFF. The backflow prevention switch includes an internal diode having an anode connected to one side including the first load and a cathode connected to the other side including the second load.

Backup power supply system and moving vehicle

A backup power supply control system includes: a first semiconductor switch that switches a main power supply line to an electrically conductive state or an electrically non-conductive state; and an auxiliary power supply switch that switches an auxiliary power supply line to the electrically conductive state or the electrically non-conductive state. A first driving unit controls, in a non-failure state, a second semiconductor switch, connected between a gate and source of a first semiconductor switch, OFF and thereby controls the first semiconductor switch ON. The first driving unit ensures, in the failure state, at least a gate-plateau voltage of the first semiconductor switch as a drive voltage for the second semiconductor switch. When a failure detection unit detects the failure state, the first driving unit controls the first semiconductor switch OFF by controlling the second semiconductor switch ON and a second driving unit controls the auxiliary power supply switch ON.

Backup power supply control system, backup power supply system, and moving vehicle

A back-up power supply system () is configured to supply electric power from an electric storage device () to loads () when a power supply () is defective. The back-up power supply system () includes a first voltage conversion circuit () configured to convert an output voltage of the electric storage device (). The loads () include a first load () and a second load (). The back-up power supply system () is configured to supply power from the electric storage device () to the first load () not via the voltage conversion circuit (), and to supply electric power from the electric storage device () to the second load () via the voltage conversion circuit ().

Growing community of inventors

Osaka, Japan

Masatoshi Nakase