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Control method and device of dcdc power supply and dcdc power supply protection circuit

A control method and a technology of a control device, which are applied to emergency protection circuit devices, overcurrent-responsive protection, output power conversion devices, etc., can solve the problem of slow protection speed of non-isolated DCDC conversion circuits, and high-power circuit protection and other problems, to achieve the effect of improving the short-circuit protection speed, improving the detection speed, and improving the response speed

Active Publication Date: 2021-06-25
BEIJING ETECHWIN ELECTRIC
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the shortcomings of the existing methods, the present application proposes a DCDC power supply control method, device and DCDC power supply protection circuit to solve the problem of slow protection of non-isolated DCDC conversion circuits and the inability to protect high-power Technical Problems of Circuit Protection

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  • Control method and device of dcdc power supply and dcdc power supply protection circuit
  • Control method and device of dcdc power supply and dcdc power supply protection circuit
  • Control method and device of dcdc power supply and dcdc power supply protection circuit

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Embodiment Construction

[0029] The present application is described in detail below, and examples of embodiments of the present application are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar components or components having the same or similar functions throughout. Also, detailed descriptions of known technologies are omitted if they are not necessary for illustrating features of the present application. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, but not to be construed as a limitation on the present application.

[0030] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that terms, such as thos...

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Abstract

Embodiments of the present application provide a DCDC power supply control method and device, and a DCDC power supply protection circuit. The non-isolated DCDC power supply protection circuit includes a non-isolated DCDC conversion circuit and a power controller; the input terminal of the power controller is electrically connected to at least one port of the low-voltage side and the high-voltage side in the non-isolated DCDC conversion circuit, and the low-voltage side The port voltage of the high-voltage terminal is lower than that of the high-voltage terminal; the output terminal of the power controller is electrically connected with the switch unit in the non-isolated DCDC conversion circuit. The embodiment of the present application can improve the fault detection speed and the response speed to the fault at the same time, thereby improving the short-circuit protection speed of the non-isolated DCDC conversion circuit, and is applicable to the short-circuit protection of the high-power non-isolated bidirectional DC-DC conversion circuit.

Description

technical field [0001] The present application relates to the technical field of DCDC power supplies, and in particular, the present application relates to a control method and device of a non-isolated DCDC power supply, and a non-isolated DCDC power supply protection circuit. Background technique [0002] The protection of high-power DCDC (Direct Current-Direct Current, DC-DC) conversion circuits has always been a difficult point in power electronics, especially for non-isolated high-power DCDC conversion circuits. [0003] At present, for the current protection of non-isolated DCDC conversion circuits in the market, there are mainly protection methods such as fast fuse, DC circuit breaker, and DC solid state circuit breaker. Fast fuse or circuit breaker. [0004] However, the response speed of the above two devices is relatively slow, and it takes several milliseconds or even tens of milliseconds to respond from the occurrence of a short-circuit fault to the disconnection...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/12H02H3/08H02M3/158
CPCH02H3/08H02H7/1213H02M3/158
Inventor 张广洁
Owner BEIJING ETECHWIN ELECTRIC
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