To achieve a reduction in the capacity of an auxiliary power unit.SOLUTION: An auxiliary power unit 30, installed on a feeding path to an electric power steering device 10 from a main power supply device 20, includes: an auxiliary power supply 32 which is a chargeable/dischargeable power storage device; an on-off switch 31 turning on and off the electric power steering device 10 and the auxiliary power supply 32, and the main power supply device 20; and an operation section 35 for operating the on-off switch 31. The operation section 35 turns the on-off switch 31 from on to off, provided that a voltage supplied from the main power device 20 to the auxiliary power unit 30 is equal to or less than a predetermined voltage drop determination value and a vehicle speed is beyond a predetermined low vehicle speed determination value.SELECTED DRAWING: Figure 1
【課題】補助電源の小容量化を可能とする。【解決手段】主電源装置20から電動パワーステアリング装置10への給電経路に設置される補助電源装置30は、充放電可能な蓄電装置である補助電源32と、電動パワーステアリング装置10及び補助電源32と主電源装置20とを断接する断接スイッチ31と、断接スイッチ31を操作する操作部35と、を備える。操作部35は、主電源装置20から補助電源装置30に供給される電圧が既定の電圧低下判定値以下となっており、かつ車速が既定の低車速判定値を超えていることを条件に断接スイッチ31をオンからオフに切替える。【選択図】図1
AUXILIARY POWER UNIT AND ELECTRIC POWER STEERING SYSTEM
補助電源装置、及び電動パワーステアリングシステム
2022-02-08
Patent
Electronic Resource
Japanese
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