Automotive power supply device and power box
AssigneesAutonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
InventorTsuyoshi Kontani
Life of this patent
Estimating the term…
Abstract
An automotive power supply device includes first and second batteries, first and second load groups, a plurality of fuses interposed between the first and second batteries and the first and second load groups, and instantaneous interruption prevention devices. First and second redundant system loads that complement operation of each other are allocated to the first and second load groups. The instantaneous interruption prevention devices are connected to the first and second load groups, and prevent an instantaneous interruption of electric power supplied to at least any of the first and second load groups when one or more fuses are blown.
Claims8
An automotive power supply device, comprising:
- first and second batteries;
- first and second load groups;
- and
- a plurality of fuses interposed between the first and second batteries and the first and second load groups, and blowing based on a short circuit current;
- electric power being supplied from the first and second batteries to the first and second load groups;
- wherein first and second redundant system loads that complement operation of each other are allocated respectively to the first and second load groups, and
- the automotive power supply device includes an instantaneous interruption prevention device connected to the first and second load groups and preventing instantaneous interruption of electrical power supplied to at least any of the first and second load groups when any one among the plurality of fuses is blown.
A power box to be used together with a first battery, a second battery, a first load group, and a second load group, the power box comprising:
- a first power supply path that supplies electric power from the first battery through a first fuse to the first load group;
- a second power supply path that supplies electric power from the second battery through a second fuse to the second load group;
- a semiconductor relay that connects the first power supply path and the second power supply path;
- a sensor that detects a short circuit current that flows through the semiconductor relay;
- and
- a controller that, based on a detection signal output from the sensor, sets the semiconductor relay to a nonconductive state before any one of the fuses blows.
Dependencies are inferred from the claim text.