Circuit and device for power switching
AssigneeHon Hai Precision Industry Co., Ltd.
InventorCHIA-PENG WANG
Life of this patent
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Abstract
A power switching device includes a primary power source, a backup power source, and a power switching circuit, and the power switching circuit can switch rapidly between the two or more power sources. The power switching circuit includes a first switching module, a second switching module, and a control module. The first switching module includes first through fourth relays, and first through fourth driving units. The first switching module also includes a first bidirectional thyristor and a second bidirectional thyristor. A power switching circuit is also provided.
Claims20
A power switching device, comprising:
- a primary power source;
- a backup power source;
- and
- a power switching circuit, comprising:
- a first switching module coupled to the primary power source;
- a second switching module coupled to the backup power source;
- and
- a control module coupled to the first switching module and the second switching module;
- wherein the first switching module comprises a first relay, a second relay, a third relay, a fourth relay, a first driving unit, a second driving unit, a third driving unit, a fourth driving unit, a first bidirectional thyristor, and a second bidirectional thyristor;
- the control module is configured to control the first through fourth driving units, the first driving unit is configured to control the first relay and the second relay, the second driving unit is configured to control the third relay and the fourth relay, the third relay and the first bidirectional thyristor are coupled in parallel, the fourth relay and the second bidirectional thyristor are coupled in parallel, the third driving unit is configured to control the first bidirectional thyristor, and the fourth driving unit is configured to control the second bidirectional thyristor.
A power switching circuit coupled between a primary power source and a backup power source, comprising:
- a first switching module coupled to the primary power source;
- a second switching module coupled to the backup power source;
- and
- a control module coupled to the first switching module and the second switching module;
- wherein the first switching module comprises a first relay, a second relay, a third relay, a fourth relay, a first driving unit, a second driving unit, a third driving unit, a fourth driving unit, a first bidirectional thyristor, and a second bidirectional thyristor;
- the control module is configured to control the first through fourth driving units, the first driving unit is configured to control the first relay and the second relay, the second driving unit is configured to control the third relay and the fourth relay, the third relay and the first bidirectional thyristor are coupled in parallel, the fourth relay and the second bidirectional thyristor are coupled in parallel, the third driving unit is configured to control the first bidirectional thyristor, and the fourth driving unit is configured to control the second bidirectional thyristor.
Dependencies are inferred from the claim text.