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Anti-adhesion high-voltage relay

A high-voltage relay, anti-adhesion technology, applied in relays, electromagnetic relays, electromagnetic relay details and other directions, can solve problems such as reducing the working performance and service life of the relay, reducing the load capacity of the relay, and melting the static and moving contacts. , to ensure the performance of on-load operation, avoid fusion welding and adhesion, and inhibit side deflection.

Active Publication Date: 2022-05-13
JIANGLING MOTORS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In high-voltage circuit control places for large currents, such as high-voltage DC relays are used to control the on-off of the high-voltage circuit of electric vehicles. A large amount of heat is released in a short period of time, resulting in the melting of the static contact and the moving contact and welding. In the prior art, the structure and material of the static contact and the moving contact of the relay generally have anti-adhesion characteristics. Insufficient capacity, and the increased material resistance due to arc burning will also reduce the load capacity of the relay itself
Even if the guide structure is set to share the arc, the welding and burning defects of the guide structure itself will still reduce the working performance and service life of the relay. Therefore, the existing technology cannot completely solve such defects

Method used

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  • Anti-adhesion high-voltage relay

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] like Figure 1-5 As shown, an anti-adhesion high-voltage relay includes a housing 1 , a static contact 2 , a moving contact 3 , a sealing body 4 , and a coil 5 . The housing 1 and the sealing body 4 are both hollow cavities. The sealing body 4 is set inside the housing 1, including a ceramic cover 41, a sealing seat 42, and a metal shell 43 arranged from top to bottom. The static contact 2 is installed on the ceramic On the cover 41, the bottom groove of the static contact 2 is provided with a pointed tip 22 facing downwards, and the tip of the tip 22 is flush with or protrudes from the main contact surface 21 at the bottom of the static contact 2; the static contact 2, ceramic The cover 41, the sealing seat 42 and the metal shell 43 are surrounded by continuous welding to form a sealed space for accommodating the movable contact 3. A floating contact 31 is installed in the accommodation cavity 3c on the upper surface of the movable contact 3. The floating contact 31 an...

Embodiment 2

[0053] The difference between the present embodiment and the first embodiment is that the static contact 2 adds a magnetic deflection guide structure for the arc 6 .

[0054] Such as Figure 10 As shown, the tip 22 of the static contact 2 is provided with a bias blow rod 23 inside, the material of the bias blow rod 23 is samarium cobalt, the tip of the rod end of the bias blow rod 23 is in the same direction as the tip 22, and the bias blow rod 23 is in the same direction as the static contact 2 A protective cover 24 made of thermal insulation ceramic material is provided between the inner walls. The cross-sectional contours of the tip 22, the deflecting blow rod 23 and the protective sleeve 24 are distributed in an equidistant array. Utilize the high magnetic energy product and high temperature resistance of the samarium cobalt material to ensure its resistance to the high temperature discharge of the tip 22, and at the same time use the thermal insulation ceramic material o...

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Abstract

The invention provides an anti-adhesion high-voltage relay, which is characterized in that a static contact is arranged on a ceramic cover, and a tip is arranged in a groove at the bottom end of the static contact; a floating contact is arranged in the accommodating cavity of the movable contact, the floating contact protrudes out of the surface of the movable contact due to the support of a contact spring, and the floating contact is made of a conductive high-temperature-resistant material and is different from the static contact and the movable contact in material; an upper push rod, a lower push rod, a buffer spring and a reset spring are arranged below the movable contact; an iron core is arranged at the bottom of the lower push rod and wrapped in a metal shell, and the coil is arranged on the periphery of the metal shell. By arranging the tip structure on the static contact, the electric arc at the static contact end can be led out from the tip under the condition that the electric arc is generated between the electric contacts, so that the main contact surface of the static contact is prevented from being ablated; meanwhile, in a pre-disconnection or pre-connection state, adhesion of the movable contact and the static contact can be prevented by using an elastic structure of the floating contact and a high-temperature-resistant dissimilar material, the on-load operation performance of the high-voltage relay is guaranteed, and the service life of the high-voltage relay is greatly prolonged.

Description

technical field [0001] The invention belongs to the technical field of relay manufacturing, and in particular relates to an anti-adhesion high-voltage relay. Background technique [0002] The relay is a common component in the control circuit. The controlled quantity in the circuit changes through the change of the input quantity to achieve the purpose of automatic control and adjustment. It is widely used in power electronic equipment, especially in the field of high-voltage circuit control. , the relay undertakes important execution tasks. The high-voltage circuit can be pulled in and cut off through the isolated operation of the working coil. Its working performance is related to the safe use of the high-voltage circuit, so it needs to have better current cutting ability and overload performance. . [0003] In high-voltage circuit control places for large currents, such as high-voltage DC relays are used to control the on-off of the high-voltage circuit of electric vehic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H50/54H01H9/38H01H9/44
CPCH01H50/54H01H50/541H01H9/383H01H9/38H01H9/44
Inventor 林金源邓海燕游道亮董冰汤桃峰谢章鹏
Owner JIANGLING MOTORS