Power supply apparatus for charging and discharging battery with high energy efficiency
First Claim
1. A battery charge/discharge power supply apparatus for performing a charge/discharge operation on a storage battery, comprising:
- a direct current power source switchably connected to the storage battery to function as a power source and a discharge load;
an auxiliary battery switchably connected to the storage battery; and
a DC-DC converter provided between the storage battery and the auxiliary battery for adjusting voltages between the storage battery and the auxiliary battery and promoting the charge/discharge operation;
wherein the storage battery is charged with an electric power discharged from the auxiliary battery through the converter in a charge cycle of the storage battery, and the auxiliary battery is charge by an electric power discharged from the storage battery through the converter in a discharge cycle of the storage battery, and the direct current power source replenishes shortage of a power capacity in the auxiliary battery; and
wherein the discharged electric power from the storage battery is supplied to the auxiliary battery and the storage battery is charged by the discharged electric power from the auxiliary battery in response to charge/discharge conditions including a depth of discharge of the storage battery and the auxiliary battery.
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Accused Products
Abstract
A battery charge/discharge power supply apparatus for saving electric energy when performing charge/discharge operation of a storage battery. The power supply apparatus includes a direct current power source for switchably connected to the storage battery, an auxiliary battery switchably connected to the storage battery, and a converter provided between the storage battery and the auxiliary battery. The storage battery is charged by the power supplied from the auxiliary battery in the charge cycle of the storage battery. The auxiliary battery is charged by the discharge power from the storage battery in the discharge cycle of the storage battery. The direct current power source replenishes shortage of a power capacity in the auxiliary battery.
54 Citations
8 Claims
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1. A battery charge/discharge power supply apparatus for performing a charge/discharge operation on a storage battery, comprising:
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a direct current power source switchably connected to the storage battery to function as a power source and a discharge load;
an auxiliary battery switchably connected to the storage battery; and
a DC-DC converter provided between the storage battery and the auxiliary battery for adjusting voltages between the storage battery and the auxiliary battery and promoting the charge/discharge operation;
wherein the storage battery is charged with an electric power discharged from the auxiliary battery through the converter in a charge cycle of the storage battery, and the auxiliary battery is charge by an electric power discharged from the storage battery through the converter in a discharge cycle of the storage battery, and the direct current power source replenishes shortage of a power capacity in the auxiliary battery; and
wherein the discharged electric power from the storage battery is supplied to the auxiliary battery and the storage battery is charged by the discharged electric power from the auxiliary battery in response to charge/discharge conditions including a depth of discharge of the storage battery and the auxiliary battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification