Electromagnetic relay for dual-power switching

Abstract

The invention discloses an electromagnetic relay for dual-power switching. The electromagnetic relay comprises a base, a sliding block, a contact portion and a magnetic circuit portion; the magnetic circuit portion is arranged on the base, the sliding block is arranged on the base in a sliding mode; the magnetic circuit portion is provided with a pushing arm and is matched with the sliding block,so as to drive the sliding block to move back and forth; the contact part comprises at least two movable springs and at least four static springs; the static springs are arranged on the base and are symmetrically distributed on the two sides of the moving direction of the sliding block in a symmetric manner; the movable reeds are of a straight-piece type structure and are rigid movable springs, and the middle parts of the movable reeds are inserted into the sliding block, and the two ends of each movable reed are fixedly connected with a movable contact in a single-side mode and are matched with static contacts of corresponding static reeds on the two sides of the sliding block. The electromagnetic relay has the advantages of being long in electrical gap between the contact sets and shortin flight time, so that a sufficient isolation requirement between the conversion power sources can be met, the magnetic circuit air gap is reduced, and rapid switching between the conversion power sources is realized.

Description

technical field [0001] The invention relates to the technical field of relays, in particular to an electromagnetic relay used for dual power supply switching. Background technique [0002] With the rapid development of the photovoltaic industry, wind power generation, and hydropower generation, in addition to the storage of electric energy in commercial office buildings, teaching buildings, and data centers, the storage of electric energy in large personal residences (villas) will become more and more common. The stored electrical energy is mainly used for continuous power supply when the power grid is cut off. The time required for buildings or residences to switch to energy storage devices may not be high, and the voltage and current are usually not high. For the server power supply of the data center , which requires an uninterruptible power supply, so when the grid is powered off, it is necessary to quickly and seamlessly connect and switch to the backup power supply (en...

AI Technical Summary

Problems solved by technology

For this kind of relay in the prior art, after a relatively large electrical gap is set, the magnetic circuit air gap b must also be increased correspondingly to meet the requirements of the working stroke; however, after the magnetic circuit air gap b is increased, it is difficult to achieve two The fast and seamless connection between power supplies can easily cause abnormal power outages and fail to function as a backup power supply.

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