Power source device
First Claim
Patent Images
1. A power source device, comprising:
- an insulated AC-DC converter configured to receive an AC voltage and output a DC link voltage to a bidirectional DC-DC converter; and
the bidirectional DC-DC converter, which is configured to;
receive the link voltage from a first direction, and use the link voltage to charge a battery;
receive power from the battery; and
selectively output the link voltage in a second direction opposite to the first direction,wherein the bidirectional DC-DC converter is configured to output the link voltage having a constant first value when a voltage of the battery is at or below a threshold, and to output the link voltage having a second value higher than the first value when a voltage of the battery is above the threshold.
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Abstract
Provided is a power source device having a high efficiency. A power source device 1 includes an insulated AC-DC converter 2 which receives a voltage of an AC power source 10 and outputs a link voltage Vlink, a bidirectional DC-DC converter 3 which receives the link voltage Vlink to charge a main battery 5, an insulated DC-DC converter 4 which receives the link voltage Vlink to supply power to a load 7, an operation mode in which the power is supplied from the AC power source 10 to the main battery 5, and an operation mode in which the power is supplied from the main battery 5 to the load 7.
15 Citations
20 Claims
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1. A power source device, comprising:
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an insulated AC-DC converter configured to receive an AC voltage and output a DC link voltage to a bidirectional DC-DC converter; and the bidirectional DC-DC converter, which is configured to; receive the link voltage from a first direction, and use the link voltage to charge a battery; receive power from the battery; and selectively output the link voltage in a second direction opposite to the first direction, wherein the bidirectional DC-DC converter is configured to output the link voltage having a constant first value when a voltage of the battery is at or below a threshold, and to output the link voltage having a second value higher than the first value when a voltage of the battery is above the threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 20)
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13. A power source device, comprising:
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an insulated AC-DC converter configured to receive an AC voltage and output a DC link voltage; a bidirectional DC-DC converter configured to; receive the link voltage and charge a battery using the link voltage; and receive power from the battery and selectively output the link voltage using the power; and an insulated DC-DC converter configured to receive the link voltage from the bidirectional DC-DC converter and to supply the power to a load, wherein an operation range of the link voltage when the bidirectional DC-DC converter steadily receives or outputs the power is narrower than a voltage range of the battery, and, wherein the bidirectional DC-DC converter is configured to output the link voltage having a constant first value when a voltage of the battery is at or below a threshold, and to output the link voltage having a second value higher than the first value when a voltage of the battery is above the threshold. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification