Abstract: A vehicle power supply system that includes an alternator; a first electrical storage device that is charged by the alternator; a power generator that generates power in conjunction with traveling of the vehicle; a second electrical storage device that is charged by the power generator; a charge path used to charge the second electrical storage device with power from the power generator; a first power feed path for feeding power to the actuator from the first electrical storage device; a second power feed path for feeding power to the actuator from the second electrical storage device; a third power feed path for feeding power to the control load from the first electrical storage device; a fourth power feed path for feeding power to the control load from the second electrical storage device; a first switch and a second switch.

Abstract: Provided is a wiring module for which the shape of a through hole formed in a wall of a vehicle can be set independent of the cross section of a conductor plate. The wiring module penetrates a wall provided in a vehicle. The wiring module includes a pair of conductor plates and a conductive fastening member. The pair of conductor plates are disposed opposite to each other via the wall. The fastening member penetrates the wall to be conductively connected to the pair of conductor plates, and fastens the pair of conductor plates to the wall.

Abstract: Provided is a wiring module for which the shape of a through hole formed in a wall of a vehicle can be set independent of the cross section of a conductor plate. The wiring module penetrates a wall provided in a vehicle. The wiring module includes a pair of conductor plates and a conductive fastening member. The pair of conductor plates are disposed opposite to each other via the wall. The fastening member penetrates the wall to be conductively connected to the pair of conductor plates, and fastens the pair of conductor plates to the wall.

Abstract: Provided is an in-vehicle power supply device that is less susceptible to the occurrence of sneak current between a main battery and a sub-battery that supply power externally. The in-vehicle power supply device includes a main battery for in-vehicle use, a sub-battery for in-vehicle use, a switch, a main power supply path, a sub-power supply path, a relay, and wiring. The switch has a first end connected to the main battery and the main power supply path, and a second end connected to the sub-battery. The relay has a first contact connected to a sub-power supply path, and a second contact connected to the second end. The first contact and the second contact form a pair. The wiring is a connection path that connects the first end and the first contact, and supplies power from the main battery to the sub-power supply path.

Abstract: A vehicle power supply system that includes an alternator; a first electrical storage device that is charged by the alternator; a power generator that generates power in conjunction with traveling of the vehicle; a second electrical storage device that is charged by the power generator; a charge path used to charge the second electrical storage device with power from the power generator; a first power feed path for feeding power to the actuator from the first electrical storage device; a second power feed path for feeding power to the actuator from the second electrical storage device; a third power feed path for feeding power to the control load from the first electrical storage device; a fourth power feed path for feeding power to the control load from the second electrical storage device; a first switch and a second switch.

Abstract: An automobile power supply device includes plate-shaped metal wirings and is configured to supply electric power from a battery that is installed in an engine room of a vehicle body to a vehicle interior. The metal wiring may extend in a central portion of a floor surface in the vehicle interior, and the automobile power supply device may include wire harnesses that respectively connect multiple electric devices that are installed in the vehicle body to the metal wiring in the vehicle interior. The metal wiring may be formed by coupling a plurality of wiring materials.

Abstract: Provided is an in-vehicle power supply device that is less susceptible to the occurrence of sneak current between a main battery and a sub-battery that supply power externally. The in-vehicle power supply device includes a main battery for in-vehicle use and a sub-battery for in-vehicle use. The in-vehicle power supply device is further provided with a plurality of diode pairs and a switch connected in parallel to all of the diode pairs. The sub-battery is connected to the main battery via the switch. The two diodes of each diode pair are connected in series with forward directions opposite to each other.

Abstract: Provided is an in-vehicle power supply device that is less susceptible to the occurrence of sneak current between a main battery and a sub-battery that supply power externally. The in-vehicle power supply device includes a main battery for in-vehicle use and a sub-battery for in-vehicle use. The in-vehicle power supply device further includes at least one relay. A switch is connected between the main battery and the sub-battery, and has a first end on an opposite side to the sub-battery. The relay has at least one first contact and a second contact forming a pair with the first contact, and the second contact is connected to the sub-battery. In the relay, the first contact and the second contact form a pair, and are normally closed. The first contact is connected to the first end, at least in a state where the first contact is electrically disconnected from the second contact.

Abstract: An automobile power supply device includes plate-shaped metal wirings and configured to supply electric power from a battery that is installed in an engine room of a vehicle body to a vehicle interior.