Method for improving high power relay load capability

Abstract

The invention discloses a method for enhancing the load capability of a big power relay. The method is that through meshes are additionally arranged on the contact surface of a contact part of the relay, and the quantity of the meshes additionally arranged on the contact surface is determined according to the size of the contact. A relay produced by adopting the method of the invention has the advantages of speeding up the electric arc extinction between contacts of the relay, accelerating heat dissipation of the relay contacts and improving the environmental mechanics property of a contact system of the relay, therefore the load capability of the relay can be enhanced. The invention is suitable for the manufacturing of the great load relay.

Description

1. Technical field [0001] The invention relates to a method for improving the load capacity of a high-power relay, which belongs to the technical field of relays. 2. Background technology [0002] A relay is an automatic electrical switch, and an electromagnetic relay is a component that drives a contact system to switch loads by converting input electrical energy into mechanical energy. The structure of an electromagnetic relay is generally composed of an electromagnetic system, a contact system and an outer cover. The electromagnetic system is a mechanism that converts electrical signals into mechanical signals, and the contact system is a structure that switches loads through the electromagnetic attraction of the electromagnetic system. [0003] In high-power relays, the contact system generally adopts the form of riveted contacts on the contact reed, in which the ability of the contact to switch the load represents the ability of the relay to switch the load, and the wea...

AI Technical Summary

Problems solved by technology

In all the above-mentioned conventional measures, increasing the contact pressure between the contacts, accelerating the switching speed of the contacts, and increasing the gap when the contacts are disconnected all need to greatly increase the electromagnetic attraction of the electromagnetic system; increasing the contact The contact area and volume of the point will increase the weight of the contact, reduce the natural vibration frequency of the contact system, and affect the environmental mechanical properties of the whole relay

Therefore, the above-mentioned measures to improve the load capacity of high-power relays can no longer fully meet the increasingly higher load requirements put forward by the current application field of relays.