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Circuit protection device, circuit protection method and circuit protection equipment

A circuit protection equipment and circuit protection technology are applied in the field of circuit protection equipment and circuit protection devices to achieve the effect of improving the accuracy of circuit protection

Inactive Publication Date: 2015-04-15
AOTU ELECTRONICS WUHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to enable the circuit that enters the over-current protection state to return to the normal working state in time, and there is no potential safety hazard

Method used

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  • Circuit protection device, circuit protection method and circuit protection equipment
  • Circuit protection device, circuit protection method and circuit protection equipment
  • Circuit protection device, circuit protection method and circuit protection equipment

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Embodiment Construction

[0028] Various exemplary embodiments, features, and aspects of the invention will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0029] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

[0030] In addition, in order to better illustrate the present invention, numerous specific details are given in the specific embodiments below. It will be understood by those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, means, components and circuits are ...

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Abstract

The invention relates to a circuit protection device, a circuit protection method, and a piece of circuit protection equipment. The circuit protection device comprises a first switch coupled between a load and a power supply used for powering the load, and a controller coupled to the first switch. The controller is used for switching off the first switch when judging that an abnormality occurs according to a first signal, and switching on the first switch when judging that the abnormality is eliminated according to a second signal and a third signal, wherein the first signal indicates the current flowing through the load when the first switch is switched on, the second signal indicates the power voltage of the power supply, and the third signal indicates the load voltage of the load. By adopting the circuit protection device and the circuit protection method provided by the invention, an abnormal state can be identified accurately, over-current protection can be provided, the circuit can recover from the over-current protection state in a timely manner, and almost no security risks exist.

Description

technical field [0001] The invention belongs to the field of electronic circuits, and relates to a circuit protection device, a circuit protection method and circuit protection equipment. Background technique [0002] The circuit protection mechanism is usually used in the circuit of electric vehicles and other products, which is used to make the circuit enter the overcurrent protection state (such as cutting off the path between the power supply and the load) when the load abnormality (such as short circuit, etc.) occurs in the circuit. In order to avoid damage to the power supply caused by overcurrent, etc. [0003] The traditional overcurrent protection scheme of electric vehicles is usually implemented with an air switch. When the current is too large, the electromagnetic tripper of the air switch separates the switch contacts through magnetic force. Because the working principle of the traditional air switch overcurrent protection is The main circuit switch can only be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/00H02H3/08H02H3/06
Inventor 巩小飞林美爱张涛
Owner AOTU ELECTRONICS WUHAN
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