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DCDC power supply control method, device thereof and DCDC power supply protecting circuit

A technology of power protection and power controller, which is applied in emergency protection circuit devices, overcurrent protection, output power conversion devices, etc., can solve the problem of high-power circuit protection, non-isolated DCDC conversion circuit protection speed is slow Unable to wait for problems to achieve the effect of improving detection speed, short-circuit protection speed, and response speed

Active Publication Date: 2019-02-26
BEIJING ETECHWIN ELECTRIC
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AI Technical Summary

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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  • DCDC power supply control method, device thereof and DCDC power supply protecting circuit
  • DCDC power supply control method, device thereof and DCDC power supply protecting circuit
  • DCDC power supply control method, device thereof and DCDC power supply protecting circuit

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[0029] The present application is described in detail below, and examples of embodiments of the present application are shown in the drawings, wherein the same or similar reference numerals represent the same or similar components or components having the same or similar functions throughout. Also, detailed descriptions of known technologies will be omitted if they are unnecessary to illustrate the features of the present application. The embodiments described below by referring to the figures are exemplary only for explaining the present application, and are not construed as limiting the present application.

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

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Abstract

An embodiment of the invention provides a DCDC power supply control method, a device thereof and a DCDC power supply protecting circuit. A non-isolated DCDC power supply protecting circuit comprises anon-isolated DCDC transforming circuit and a power supply controller. The input end of the power supply controller is electrically connected with the port of at least one side in the low-voltage sideand the high-voltage side in the non-isolated DCDC transforming circuit. The port voltage of the low-voltage side is lower than that of the high-voltage side. The output end of the power supply controller is electrically connected with a switch unit in the non-isolated DCDC transforming circuit. The DCDC power supply control method, the device thereof and the DCDC power supply protecting circuithas advantages of increasing fault detecting speed, improving fault response speed, improving shortcircuit protecting speed for the non-isolated DCDC transforming circuit and realizing suitability forshortcircuit protection of the high-power non-isolated bidirectional DCDC transforming circuit.

Description

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

Claims

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Application Information

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