High voltage DC vacuum relay with high reliability and long service life

A vacuum relay, high-voltage DC technology, applied in relays, electrodeless relays, electromagnetic relays and other directions, can solve the problems of increased contact temperature rise, increased contact voltage drop, reduced relay performance and reliability of use, etc., to achieve reliable contact, Excellent electrical insulation performance, ensuring the effect of arc breaking ability

Active Publication Date: 2010-03-24
XIAMEN HONGFA ELECTRIC POWER CONTROLS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to the gas filled in this type of relay, the contact pressure drop will increase, the temperature rise of the contact will increase, and the plastic parts will release organic gas under the action of temperature and arc, which will continue to deteriorate the electrical contact performance and reduce the performance and use of the relay. reliability

Method used

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  • High voltage DC vacuum relay with high reliability and long service life
  • High voltage DC vacuum relay with high reliability and long service life
  • High voltage DC vacuum relay with high reliability and long service life

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Embodiment Construction

[0035] see Figure 1 to Figure 7 As shown, a high-reliability and long-life high-voltage DC vacuum relay of the present invention includes a moving contact assembly, a static contact assembly, a pushing mechanism containing an iron core, a ceramic cavity, and an external magnetic circuit part; the static contact assembly includes The lead-out 6 and the static contact 7 fixed with the lead-out, the lead-out 6 is installed on the ceramic cavity; the moving contact assembly includes the moving reed 14 and the moving contact 13 fixed with the moving reed; the pushing mechanism It includes a push rod 18 and an iron core that can move the push rod under the action of the external magnetic circuit part; the external magnetic circuit part is installed outside the ceramic cavity; the moving contact assembly, the static contact and the pushing mechanism are completely sealed in the ceramic cavity In the formed vacuum cavity, the moving contact assembly is connected with the first end of...

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Abstract

The invention discloses a high voltage DC vacuum relay with high reliability and long service life, which is arranged inside a vacuum cavity body that is sealed and connected by meal and ceramic; a ceramic insulator is connected between a movable contact component and a push rod in a sliding way; the good vacuum performance and electric insulation performance of the ceramic insulator can be utilized to lead the movable contact and a fixed contact to main good electric insulation together with a magnetic circuit system formed by a magnetic guide yoke iron plate of the relay, an iron core and the like no matter in a state of connection or disconnection, so that current interruption capability of the relay can be guaranteed when DC high-voltage load is switched; a vacuum chamber body and allparts in side the vacuum chamber body formed by the high voltage DC vacuum relay have low enough saturated vapor pressure and are treated by high temperature baking exhaust, so that the vacuum degreein the vacuum chamber body can ensure the work demand of the relay on switching heavy current and the DC high-voltage load for a long time; furthermore, the relay also has the advantages of simple andcompact structure, small volume, light weight, strong shock resistance and impact resistance, simple technique process, low production cost and large batch production.

Description

technical field [0001] The invention relates to a relay, in particular to a novel high-voltage DC vacuum relay with high reliability and long service life. Background technique [0002] With the development of modern industrial technology, 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 management, charging-discharging devices, frequency conversion control, solar power generation system control, welding equipment, elevators, etc. However, traditional 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H51/06H01H50/00H01H50/16H01H50/54
Inventor 钟叔明刘庆恺
Owner XIAMEN HONGFA ELECTRIC POWER CONTROLS
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