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Overcurrent protection circuit and its method and system for judging whether the power supply is overhauled

An overcurrent protection circuit and protection module technology, applied in emergency protection circuit devices, protection responding to overcurrent, power supply testing, etc. The effect of cost, loss reduction and life improvement

Active Publication Date: 2022-05-24
LEADRIVE TECH (SHANGHAI) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide an overcurrent protection circuit to solve the technical problem that the protection circuit in the prior art does not have the function of actively clearing the fault latch circuit

Method used

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  • Overcurrent protection circuit and its method and system for judging whether the power supply is overhauled
  • Overcurrent protection circuit and its method and system for judging whether the power supply is overhauled
  • Overcurrent protection circuit and its method and system for judging whether the power supply is overhauled

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Embodiment Construction

[0062] The embodiments of the present invention are described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other under the condition of no conflict. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the pre...

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Abstract

The overcurrent protection circuit of the present invention belongs to the technical field of power supply control management circuit, and solves the technical problem that the protection circuit in the prior art does not have the function of actively clearing the fault latch circuit. The circuit includes a detection module, which can detect whether the load in the circuit is working normally, and a switch module, which can receive a control signal to close or disconnect, and a clear module, which can send a control signal to the switch module and can actively clear the fault latch circuit, wherein: the input end of the detection module is connected to the output end of the power supply, the output end is connected to the input end of the switch module, and the control end is connected to the input end of the clearing module; the output end of the switch module is connected to the The load is connected, its control end is connected to the output end of the cleaning module, and the method and system for judging whether the power supply is overhauled or not. The invention is used to improve the protection function when the circuit is short-circuited, and meets people's requirements for the circuit to be able to clear the fault latch circuit and reduce the cost of the circuit.

Description

technical field [0001] The invention belongs to the technical field of power supply control and management circuits, and in particular relates to an overcurrent protection circuit and a method and system for judging whether a power supply is overhauled. Background technique [0002] When a phase-to-phase short-circuit fault occurs in the power supply, the current will suddenly increase and the voltage will suddenly drop. The overcurrent protection is to set the operating current of the current relay according to the requirements of the line selectivity. When the fault current in the line reaches the action value of the current relay, the action of the current relay selectively cuts off the fault line according to the selective requirements of the protection device. The overcurrent protection circuit is used to protect the power supply circuit when the load is short-circuited, especially when the load is an external device. When the load is over-current or the port is short-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/00H02H1/00H02H7/12H02H3/08G01R31/52G01R31/40
CPCH02H7/008H02H1/0007H02H7/1203H02H3/08G01R31/52G01R31/40
Inventor 董耀文张嵩任康乐
Owner LEADRIVE TECH (SHANGHAI) CO LTD
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