PROBLEM TO BE SOLVED: To provide an auxiliary capacitor charge control device for a vehicle, capable of continuously performing the variable control of charging voltage of an auxiliary capacitor according to an ambient temperature, to suppress the deterioration of the auxiliary capacitor without causing wasteful component cost.SOLUTION: The auxiliary capacitor charge control device for controlling to charge an auxiliary capacitor C is provided on a vehicle power supply in which a generator 8, interlocked with an engine 9, generates electricity to charge a main capacitor B and the auxiliary capacitor C and feeds power to a plurality of load 3 from the generator 8, the main capacitor B, and the auxiliary capacitor C. The auxiliary capacitor charge control device includes: a switch T1 provided among the generator 8, the main capacitor B, and the auxiliary capacitor C; voltage division circuits R1, R2 for dividing a charge voltage to the auxiliary capacitor C; temperature correction circuits Rt, R3 for correcting each charge voltage value obtained by the division by the voltage division circuits R1, R2, according to the ambient temperature of the auxiliary capacitor C; and a switch on/off control circuit 5 for controlling the switch T1 to switch on/off when the charge voltage value corrected by the temperature correction circuits Rt, R3 is lower/higher than a predetermined voltage value.
【課題】周辺温度に応じて補助蓄電器の充電電圧を連続的に可変制御し、補助蓄電器の劣化を抑制でき、部品コスト的に無駄が生じない車両用の補助蓄電器充電制御装置の提供。【解決手段】エンジン9に連動する発電機8が発電して主蓄電器B及び補助蓄電器Cへ充電し、発電機8、主蓄電器B及び補助蓄電器Cから複数の負荷3へ給電する車両用電源装置に備えられ、補助蓄電器Cへの充電を制御する補助蓄電器充電制御装置。発電機8及び主蓄電器B並びに補助蓄電器C間に設けられたスイッチT1と、補助蓄電器Cへの充電電圧を分圧する分圧回路R1,R2と、分圧回路R1,R2が分圧した充電電圧値を、補助蓄電器Cの周辺温度に応じて補正する温度補正回路Rt,R3と、温度補正回路Rt,R3が補正した充電電圧値が所定電圧値より低い/高いときに、スイッチT1をオン/オフに制御するオン/オフ制御回路5とを備えている。【選択図】図1
AUXILIARY CAPACITOR CHARGE CONTROL DEVICE
補助蓄電器充電制御装置
2015-09-28
Patent
Electronic Resource
Japanese
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |