A relay device to be used in an in-vehicle system that includes three or more in-vehicle devices, the relay device includes: a state transition unit configured to cause the relay device in a sleep state to transition to a wake-up state when receiving a fir...

A wiring module is to be coupled to a battery stack member that includes laminated type batteries having electrode leads being stacked and the electrode leads of the laminated type batteries are overlapped and connected and configured as connection portion...

A wiring module is to be coupled to a battery stack member that includes laminated type batteries having electrode leads and being stacked and the electrode leads of the laminated type batteries are overlapped and connected and configured as connection por...

A power feed control device includes a voltage conversion unit performs a conversion operation of increasing or decreasing an input voltage based on power from a power storage unit. An element unit is configured to allow a current to flow to a power path s...

A wiring module that is attached to a plurality of power storage elements, including: a circuit board; an electric wire; and a protector configured to hold the circuit board and the electric wire, wherein a conductive path is routed on the circuit board, a...

An on-board switching device includes: a switching circuit; a first conduction path through which a current flows in a series connection state and no current flows in a parallel connection state; a second conduction path through which a current flows in th...

A circuit device for a vehicle is arranged in a power supply path. In the circuit device, a first conductive pattern and a second conductive pattern are arranged on an insulating layer. The first conductive pattern and the second conductive pattern are con...

Provided is a circuit structure with a new structure that can improve a heat dissipation efficiency of a heat generating component while having resistance to a reaction force of a thermally conductive member. Provided is a circuit structure including: a he...

Provided are a vehicle-mounted relay device, a computer program, and a failure determining method capable of determining the presence of a failure in a vehicle-mounted device. The vehicle-mounted relay device includes: a power relay unit; a sensing unit th...