Other

Hitachi, Ltd.

Hitachi Car Engineering Co., Ltd.

Mitsuru Koni

Hiroyuki Saito

Tatsuya Yoshida

Shinichi Sakamoto

Kiyoshi Horibe

Yuichi Kuramochi

Wataru Nagaura

A power supply line is wired in a loop from a battery power supply, and a power supply relay circuit is installed intermediately of the power supply line such that power is supplied from the power supply relay circuit to an electric load connected to a terminal unit of an intensive wiring line. By this arrangement, not only wires for control signals but also wires for power supply can be reduced. The terminal unit may serve also as the power supply relay circuit.

Device and method for supplying power to a vehicle, semi-conductor circuit device for use in the same and collective wiring device for a vehicle or an automobile

An electrical power supply system for a vehicle is provided, which can eliminate proliferation of adverse effect on other control modules caused within one of a plurality of control modules. This is accomplished by provision of the power supply system comprising: batteryfor supplying power; power line PL in a loop lay-out; a plurality of control modules BCM, VCM, FIM, DDM, RIM, CCMand PDMfor a plurality of accessory systems, which are connected via said power line PL in loop lay-out, wherein a power control module (PCM)for controlling the engine is connected to the power supply source via another power linedifferent from the power line PL.

Electric power supply system for a vehicle

A power supply line is wired in a loop from a battery power supply, and a power supply relay circuit is installed intermediately of the power supply line such that power is supplied from the power supply relay circuit to an electric load connected to a terminal unit of an intensive wiring line. By this arrangement, not only wires for control signal but also wires for power supply can be reduced. The terminal unit may serve also as the power supply relay circuit.

The electric power breaker for breaking the electric power is placed on the midpoint of the electric power line from the battery power supply, and the electric power line is extracted from the electric power breaker. In addition, the electric power supply terminal is placed on the midpoint on the electric power line, from which the electric power is supplied to the individual electric load. The electric power distribution and the electric power supply operation to the electric loads are controlled by the multiplex communication. A semiconductor device having a self protection function is used as the switching device for supplying the electric power. The electric power line covered by the electric conductive material is arranged in a loop topology so as to start from the connection point to the battery and pass through the designated positions in the vehicle and return to the battery. On the designated points on this loop, plural control modules are connected, and the electric power is supplied to them from the battery. By isolating plural electric conductive parts of the electric conductive layer covering the electric power line, each part connected to the abnormality detection circuit of the individual control module, and by detecting the electric potential change in the individual electric conductive part, the position of the abnormality can be identified by the position of the isolated electric conductive part where the short circuit abnormality is detected.

Power supplying apparatus for a vehicle and an intensive wiring apparatus

A battery is disposed at the portion beneath the rear seat of a vehicle. The positive electrode of the battery is connected through a power bus for power supply to a rear junction block (R-JB). A rear integration module (RIM) can be coupled to the R-JB through a plug-in operation. The positive electrode of the battery is also connected through a power bus to an under dash junction block (UD-JB). A body control module (BCM) can be coupled to the UD-JB through a plug-in operation. The power bus connection terminal of the UD-JB is connected to a fuse relay block (F-JB) through a power bus. A front integration module (FIM) can be coupled to the F-JB through a plug-in operation. The power bus connection terminal of the F-JB is connected to a starter motor through a power supply line and further connected to an alternator through a power supply line from the starter.

Power supply network apparatus

An electrical power supply system for a vehicle is provided, which can eliminate proliferation of adverse effect on other control modules caused within one of a plurality of control modules. This is accomplished by provision of the power supply system comprising: battery for supplying power; power line PL in a loop lay-out; a plurality of control modules BCM , VCM , FIM , DDM , RIM , CCM and PDM for a plurality of accessory systems, which are connected via said power line PL in loop lay-out, wherein a power control module (PCM) for controlling the engine is connected to the power supply source via another power line different from the power line PL.

Power supply device for vehicles

A power supply line is wired in a loop from a battery power supply, and a power supply relay circuit is installed intermediately of the power supply line such that power is supplied form the power supply relay circuit to an electric load connected to a terminal unit of an intensive wiring line. By this arrangement, not only wires for control signals but also wires for power supply can be reduced. The terminal unit may serve also as the power supply relay circuit.

A power supply line is wired in a loop from a battery power supply, and a supply relay circuit is installed intermediatly of the power supply line such that power is supplied from the supply relay circuit to an electric load connected to a terminal unit of an intensive wiring line. By this arrangement, not only wires for control signals but also wires for power supply can be reduced. The terminal unit may serve also as the power supply relay circuit.

Device and method for supplying power to a vehicle, semi-conductor circuit device for use in the same and collective wiring devices for a vehicle or an automobile

The electric power breaker for breaking the electric power is placed on the midpoint of the electric power line from the battery power supply, and the electric power line is extracted from the electric power breaker. In addition, the electric power supply terminal is placed on the midpoint on the electric power line, from which the electric power is supplied to the individual electric loads. The electric power distribution and the electric power supply operation to the electric loads are controlled by the multiplex communication. A semiconductor device having a self protection function is used as the switching device for supplying the electric power. The electric power line covered by the electric conductive material is arranged in a loop topology so as to start from the connection point to the battery and pass through the designated positions in the vehicle and return to the battery. On the designated points on this loop, plural control modules are connected, and the electric power is supplied to them from the battery. By isolating plural electric conductive parts of the electric conductive layer covering the electric power line, each part connected to the abnormality detection circuit of the individual control module, and by detecting the electric potential change in the individual electric conductive part, the position of the abnormality can be identified by the position of the isolated electric conductive part where the short circuit abnormality is detected.

Power supplying apparatus for a vehicle and intensive wiring apparatus

A multiplexing apparatus multiplexes between processing units and a battery unit of a vehicle which are connected to one another by wire harnesses, by grouping a variety of on-board controlled objects into a plurality of neighboring controlled objects and controlling each of respective processing units. The wire harness has electric conductors of which the outer peripheral portion are covered with a first insulating layer, electric conductivity layer which covers the electric conductors, a second insulating the peripheral portion of the electric layer which covers conductivity layer, means for applying an electric potential to said electric conductivity layer, and means for monitoring the electric potential of said electric conductivity layer.

Growing community of inventors

Hitachinaka, Japan

Mitsuru Koni