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Relay adhesion detection method, circuit and system

A technology for detecting circuits and relays, applied in circuit breaker testing, etc., can solve the problems of complex circuits, high power consumption, and low accuracy of adhesion detection results, and achieve the effect of simple circuit structure and high-precision adhesion detection

Pending Publication Date: 2021-10-15
SOLAR POWER NETWORK TECHNOLOGY (ZHEJIANG) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Based on this, it is necessary to provide a relay sticking detection method, circuit and system for the traditional relay sticking detection circuit with complex circuit, high power consumption and low accuracy of sticking detection results

Method used

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  • Relay adhesion detection method, circuit and system
  • Relay adhesion detection method, circuit and system
  • Relay adhesion detection method, circuit and system

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Embodiment Construction

[0057] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0058] The present application provides a relay adhesion detection circuit 10 . It should be noted that the relay sticking detection circuit 10 provided in the present application is applicable to any kind of relay sticking detection, and is especially applicable to a circuit system with both the total positive relay 121 and the total negative relay 131 . Optionally, the relay sticking detection circuit 10 provided in the present application is applied to a high-voltage DC power supply system with both the total positive relay 121 and the total negative relay 131 .

[005...

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Abstract

The invention relates to a relay adhesion detection method, circuit and system, and the method comprises the steps: enabling the input ends of a total positive relay and a total negative relay to be connected with a same battery pack, enabling the output ends of the total positive relay and the total negative relay to be connected with a triode, and enabling the rear parts of the triodes to be connected with a photoelectric coupler, enablng a signal acquisition device to be connected behind the photoelectric coupler, so that after the total positive relay and the total negative relay are disconnected, once the signal acquisition device acquires a low level, the relay corresponding to the signal acquisition device can be determined to be in an adhesion state, and adhesion detection between the total positive relay and the total negative relay does not influence each other; when the total positive relay and the total negative relay are both disconnected, the whole relay adhesion circuit has no standby power loss, the circuit structure is simple, and adhesion detection without power consumption and with high precision is realized.

Description

technical field [0001] The present application relates to the technical field of circuit fault detection, in particular to a relay adhesion detection method, circuit and system. Background technique [0002] There are two traditional relay adhesion detection methods, one is to detect whether the auxiliary contact of the relay is disconnected, and the other is to detect whether the relay output terminal is charged. [0003] The method of detecting whether the auxiliary contact of the relay is disconnected requires the relay to have an auxiliary contact. This kind of relay is special, not a mainstream relay, and the cost is high, and there are certain safety risks. In addition, the state of the auxiliary contact is not exactly the same as the state of the main contact, and the auxiliary contact may also be disconnected when the main contact is stuck when the relay fails. Conversely, when the main contacts are open, the auxiliary contacts may not be open. The existence of aux...

Claims

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Application Information

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IPC IPC(8): G01R31/327
CPCG01R31/327
Inventor 杨星星宋苏王忠亮路芊祝东敏
Owner SOLAR POWER NETWORK TECHNOLOGY (ZHEJIANG) CO LTD
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