PROBLEM TO BE SOLVED: To allow power to be fed to an electric load of a vehicle even when one on-vehicle power source fails.SOLUTION: A power-feeding relay circuit 2A is provided at a cabin side in a vehicle, and relays power fed from a sub battery 2B to loads 6a, 6b and 6c to which are fed power from a main battery 1 to be provided in an engine room of the vehicle. The power-feeding relay circuit 2A comprises: a power receiving wire 54 connected to the sub battery 2B; power feeding wires 5a, 5b and 5c, provided corresponding to the loads 6a, 6b and 6c, which feed power to the corresponding loads 6a, 6b and 6c respectively; switches 21, 22 and 23, provided corresponding to the power feeding wires 5a, 5b and 5c, which are connected between the corresponding power feeding wires 5a, 5b and 5c and the power receiving wire 54 respectively; and a control circuit 20 that makes the switches 21, 22 and 23 conductive when a voltage of the main battery 1 is lower than a prescribed threshold.SELECTED DRAWING: Figure 1
【課題】一つの車載電源が失陥した場合であっても、車両の電気的負荷に給電する。【解決手段】給電中継回路2Aは車両のキャビン側に設けられ、車両のエンジンルームに設けられる主電池1から給電される負荷6a,6b,6cに、副電池2Bからの給電を中継する。給電中継回路2Aは、副電池2Bに接続された受電線54と、負荷6a,6b,6cに対応して設けられ、各々がその対応する負荷6a,6b,6cへ給電する給電線5a,5b,5cと、給電線5a,5b,5cに対応して設けられ、各々がその対応する給電線5a,5b,5cと受電線54との間に接続されるスイッチ21,22,23と、主電池1の電圧が所定の閾値よりも低い場合にスイッチ21,22,23を導通させる制御回路20とを備える。【選択図】図1
POWER-FEEDING RELAY CIRCUIT, SUB-BATTERY MODULE AND POWER SOURCE SYSTEM
給電中継回路、副電池モジュール、電源システム
2017-07-13
Patent
Electronic Resource
Japanese
POWER FEEDING RELAY CIRCUIT, SUB-BATTERY MODULE, AND POWER SUPPLY SYSTEM
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