| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply equipment for a hybrid electric vehicle which realized a simple circuit configuration reverse power transmission from an auxiliary battery side to the side of a motor for starting up an engine. SOLUTION: A main battery 1 of a hybrid electric vehicle charges and auxiliary battery 6 through DC/DC converters 2-4. A high-voltage circuit section 2 conducts an inverter operation for supplying AC current to a coil 31 of a large number of turns of a transformer 3, when power is supplied from the main battery 1 to the auxiliary battery 6, and conducts a rectifying operation when power is supplied from the auxiliary battery 6 to the main battery 1. A low- voltage circuit section 4 conducts a rectifying operation, when power is supplied from the main battery 1 to the auxiliary battery 6 and conducts an inverter operation for supplying AC current to coils 32, 33 or the side of the transformer 3 with a small number of turns of, when power is supplied from the auxiliary battery 6 to the main battery 1. |
