A new type of permanent magnet electromagnetic relay

Abstract

The invention discloses a new type of permanent magnet electromagnetic relay, which belongs to the technical field of electromagnetic relays, and comprises a casing, an electromagnetic-permanent magnet system, a driving mechanism and a contact contact system, and the electromagnetic-permanent magnet system, the driving mechanism and a contact The contact systems are respectively arranged in the casing, one end of the drive mechanism moves in the electromagnetic-permanent magnet system, and the other end is connected with the contact contact system. The present invention combines the electromagnetic-permanent magnet system and the contact contact system, converts the electromagnetic force provided by the electromagnetic-permanent magnet system into the thrust of the contact contact system, and then stabilizes the contact at the limit according to the magnetic force of the permanent magnet itself Position, improve the working stability of the electromagnetic relay. The electromagnetic relay of the invention can effectively provide relatively large thrust, has the characteristics of simple structure, small size, good assembly and good manufacturability, and has broad market prospects in the application and popularization of electric circuits.

Description

technical field [0001] The invention relates to the technical field of electromagnetic relays, in particular to a novel permanent magnet electromagnetic relay. Background technique [0002] With the rapid development of green energy, ensuring the security of integrated energy systems and promoting the energy Internet, the smart grid, which is characterized by informatization, automation and interaction, has become a hot issue in the international power industry research. Automation has been gradually carried out in various fields. In order to ensure the safety of electricity consumption and output power, the requirements for switching voltage and switching current of relays are getting higher and higher, such as: electric vehicles, hybrid vehicles, fuel cell vehicles, construction machines, power supplies Management, charging-discharging equipment, frequency conversion control, solar power generation system control, welding equipment, elevators and other occasions; tradition...

AI Technical Summary

Problems solved by technology

However, there are many mechanical parts, high failure rate, and large time dispersion.

Although the electromagnetic mechanism can better meet the requirements of electromagnetic relays, its magnetic circuit inductance is large, the operating current is large, the power requirements for the power supply are high, the economy and controllability are relatively poor, and the response time of the operation is scattered. The AC control signal is generally large, and even if the dwell operation is used, the control time dispersion is above the millisecond level

[0003] Traditional electromagnetic relays are limited by their own manufacturing technology, especially the small contact gap. When connecting high-voltage AC, high-voltage DC, large DC motors, and low power factor inductive loads, the relay contacts are very prone to bonding failure or continuous arcing. Problems such as the failure of the ignition contact system will easily lead to a greatly shortened life of the relay, so it is necessary to improve it

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