Relay system with relative better arc protective circuit and its control method

A technology for protecting circuits and relays, applied to circuits, electric switches, electrical components, etc., can solve problems such as the inability to use circuits with relatively large currents, cannot be used, and the volume becomes larger, so as to achieve simple structure, simplified circuits, The effect of reducing the size of the product

Inactive Publication Date: 2010-01-06
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The arc protection circuit 31 formed by connecting the contacts of two relays in series can solve the arc problem, but it also leads to the problem of larger product size and increased cost.
while using Figure 4 The arc protection circuit 41 formed by connecting the double-gate (knife) relays in series to eliminate arcs also has its disadvantages, that is, it cannot be used in circuits with relatively large currents; because the current double-gate (knife) contact relays have The limitations of its own components prevent it from being used in circuits with relatively large currents

Method used

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  • Relay system with relative better arc protective circuit and its control method
  • Relay system with relative better arc protective circuit and its control method
  • Relay system with relative better arc protective circuit and its control method

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Embodiment Construction

[0058] Referring to Fig. 5 (a), it shows the circuit of a preferred embodiment of the relay system comprising an arc protection circuit with a high impedance element and an energy storage element according to the present invention and its first charging / C1 discharging / second charging circuit A schematic diagram of the current flow. Wherein, the relay system 5 including the arc protection circuit with a high-impedance element and an energy storage element includes: a DC power supply V1, which has a positive terminal and a negative terminal, and the negative terminal is coupled to a common ground point; a load RL, which has a first terminal and a The second end is coupled to the positive end of the DC power supply V1; an arc protection circuit 51 with high impedance elements and energy storage elements, a relay 52, a relay switch control circuit 53, an alarm system 54 and a voltage divider circuit 55. Wherein, the arc protection circuit 51 having a high-impedance element and an ...

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Abstract

The present invention discloses a relay system with are protection circuit and its control method. Said relay system with are protection circuit includes load with first end and second end, relay coupled with common ground point and first end of load, and are protection circuit for eliminating are produced by said relay. Said are protection circuit includes an energy storage element, it has first end and second end, and parallel-connected with said relay, the first end of said energy storage element is coupled with first end of said load and is used for storing and releasing energy; and a high impedance element, it is coupled with second end of said load and is used for making said energy storage element attain the goal of quickly charging and slowly discharging.

Description

technical field [0001] The invention relates to a relay protection circuit and its control method for eliminating the arc generated by the relay, in particular to an arc protection circuit with relatively better effect in a relay system and its control method. Background technique [0002] Relays are an indispensable component in general applications, but there are often problems with insufficient withstand voltage of the relay, or the occurrence of arcs due to the large DC current flowing through the relay, which shortens the service life of the relay contacts in light cases, and seriously Otherwise, it will cause the contacts of the relay to melt down, and more seriously, there will be a risk of fire, which will cause a safety incident. Another situation is that when the operating voltage of the relay contact rises, the current that the relay can withstand will drop severely. The light one takes up the product volume but cannot meet the expected requirements, and the serio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H9/30H01H9/42H01H9/54
Inventor 陶纪明
Owner DELTA ELECTRONICS INC
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