WO2019080709A1 - 一种耐瞬时大电流冲击的高压继电器 - Google Patents

一种耐瞬时大电流冲击的高压继电器

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Publication number
WO2019080709A1
WO2019080709A1 PCT/CN2018/109552 CN2018109552W WO2019080709A1 WO 2019080709 A1 WO2019080709 A1 WO 2019080709A1 CN 2018109552 W CN2018109552 W CN 2018109552W WO 2019080709 A1 WO2019080709 A1 WO 2019080709A1
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WO
WIPO (PCT)
Prior art keywords
contact
voltage relay
iron core
moving
movable contact
Prior art date
Application number
PCT/CN2018/109552
Other languages
English (en)
French (fr)
Inventor
纽春萍
吴翊
康旭峰
杨飞
荣命哲
闫广超
方庆银
Original Assignee
西安交通大学
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201711057040.XA external-priority patent/CN107706055B/zh
Priority claimed from CN201721387275.0U external-priority patent/CN207542152U/zh
Application filed by 西安交通大学, 华为技术有限公司 filed Critical 西安交通大学
Priority to EP18869509.2A priority Critical patent/EP3690917B1/en
Priority to JP2020543672A priority patent/JP6958882B2/ja
Publication of WO2019080709A1 publication Critical patent/WO2019080709A1/zh
Priority to US16/858,314 priority patent/US11289280B2/en
Priority to US17/684,093 priority patent/US11694856B2/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
    • H01H50/645—Driving arrangements between movable part of magnetic circuit and contact intermediate part making a resilient or flexible connection
    • H01H50/646—Driving arrangements between movable part of magnetic circuit and contact intermediate part making a resilient or flexible connection intermediate part being a blade spring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5822—Flexible connections between movable contact and terminal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/44—Magnetic coils or windings
    • H01H50/443—Connections to coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/56—Contact spring sets
    • H01H50/58—Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/64—Driving arrangements between movable part of magnetic circuit and contact

Definitions

  • the invention relates to a high voltage relay, in particular to a high voltage relay resistant to transient large current surges.
  • Electromagnetic relays are electromechanical components that are widely used in power control, industrial automation equipment, and household appliances. It is actually an "automatic switch” that uses a small current and a low voltage to control a large current and a high voltage, and functions as an automatic adjustment, safety protection, and conversion circuit in the circuit.
  • the communication system HVDC high-voltage DC power supply
  • HVDC high-voltage DC power supply
  • the communication system HVDC (high-voltage DC power supply) relay uses the working condition as an outdoor communication facility, so there is a high requirement for lightning protection current impact.
  • the existing electromagnetic relays of the straight-plate type conductive sheets when there is a transient large current, the electric repulsion between the contacts is much larger than the final pressure of the contacts, causing the contacts to repell and generate a strong arc, and the contacts are instantaneously heated. And the melt burned.
  • the design of the electromagnetic relay mainly utilizes the principle of Lorentz force.
  • the existing patents mainly use the deformation amount of the movable reed to apply the contact pressure to the moving and static contacts, and the magnitude of the short-circuit current and the distance between the two reeds can be resisted. The deformation of the reed is closely related.
  • the contact separation is realized by the deformation of the reed, which is difficult to meet the large inrush current and the breaking speed is limited;
  • the stiffness, deformation, fatigue and other factors have a serious impact on the mechanical life and electrical life; at the same time, the reed has high requirements on the processing technology and the material properties of the reed determine the opening distance between the moving and static contacts in the disconnected state. Limited, limited the increase in the operating voltage level and insulation withstand voltage level.
  • the present invention provides a high-voltage relay that is resistant to transient large current surges.
  • the current can be quickly disconnected, and the withstand voltage level is increased by the increase of the spacing of the dynamic and static contacts. .
  • a high-voltage relay resistant to transient large current surges comprising: an electromagnetic system, a control system, a contact system and a base bracket 3; wherein the electromagnetic system is connected to a control system for generating a magnetic field to provide a driving force for the control system
  • the control system is coupled to the contact system for controlling the attraction and disengagement of contacts in the contact system; the contact system generates an electromagnetic force when the high voltage relay passes an instantaneous large current to counteract the contact Electric repulsion between points;
  • the electromagnetic system includes a yoke 1, a bobbin 2, a movable iron core 9, and a static iron core 10; wherein the bobbin 2 is fixed to an outer side of the movable iron core 9 and the static iron core 10; 1 wrapped in the movable iron core 9, the static iron core 10 and the coil bobbin 2 on the upper and lower sides and the left and right sides to form a magnetic circuit;
  • the steering system includes a drive shaft 8, a contact spring 11, a return spring 12, and a movable contact bracket 15; wherein the contact spring 11 and the return spring 12 are wound on the drive shaft 8, and the drive shaft 8 is worn. Passing through the movable contact holder 15 and connecting with the movable contact holder 15 through a snap spring;
  • the contact system includes a current flowing into the sheet 4, a moving copper piece 5, a connecting member 6, a current flowing out piece 7, a moving contact 13, a static contact 14 and a waist hole 16; wherein the current flows into the sheet 4 and the current
  • the outflow piece 7 is fixed on the base bracket 3; the movable contact 13 is fixed on the moving copper piece 5, the static contact 14 is fixed on the current flowing out piece 7; the connecting piece (6) is riveted or welded On the current flowing into the sheet (4) and the moving copper sheet (5);
  • the movable iron core 9 and the static iron core 10 are annular hollow, and the material thereof is a magnetic conductive material and has a fixed air gap;
  • the moving iron core 9 drives the transmission shaft 8 to move after the high-voltage relay is energized, so that the moving contact holder 15 and the moving copper piece 5 move in the direction in which the contacts are closed;
  • the contact spring 11 is used to provide contact pressure, so that the movable contact 13 and the static contact 14 can be reliably contacted;
  • the return spring 12 is configured to drive the movable contact holder 15 through the transmission shaft 8 to quickly separate the movable contact 13 and the stationary contact 14;
  • the current flowing into the sheet 4 and the moving copper piece 5 interact to generate a magnetic field when the high voltage relay passes an instantaneous large current, so that the moving copper piece 5 generates an electromagnetic force opposite to the direction of the electric repulsion of the contact;
  • An overtravel is provided between the movable contact 3 and the stationary contact 4.
  • the invention can realize rapid breaking of current and reasonable increase of spacing of moving and static contacts by reasonably designing the contact structure and the control system without increasing the external dimensions of the product and increasing the power consumption of the coil control part. Large increase in withstand voltage level, more suitable for high voltage conditions. Moreover, the electromagnetic force generated by the indirect current flowing into the copper piece and the moving copper piece against the electric repulsion generated between the moving and static contacts by the instantaneous large current is resisted.
  • the relay is compact in structure, strong in shock and vibration resistance, high in electrical and mechanical life, and inexpensive, and can be mass-produced.
  • FIG. 1 is a schematic structural view of a high voltage relay resistant to transient large current surges in the present example
  • 1 is a yoke
  • 2 is a coil bobbin
  • 3 is a base bracket
  • 4 is a current inflow sheet
  • 5 is a moving copper piece
  • 6 is a soft connection
  • 7 is a current outflow piece
  • 8 is a drive shaft
  • 9 is a moving iron core
  • 10 is a static iron core
  • 11 is a contact spring
  • 12 is a return spring
  • 13 is a moving contact
  • 14 is a static contact
  • 15 is a movable contact bracket
  • 16 is a waist round hole
  • Figure 2 is a schematic view showing the contact closure of the contact system of Figure 1;
  • FIG. 3 is a schematic structural view of the movable copper piece and the movable contact holder of FIG. 1.
  • a high voltage relay resistant to instantaneous large current surges of the present embodiment includes an electromagnetic system, a control system, and a contact system.
  • the electromagnetic system includes a yoke 1, a bobbin 2, a coil (not shown), a moving iron core 9 and a static iron core 10.
  • the steering system includes a base bracket 3, a drive shaft 8, a contact spring 11, a return spring 12, and a movable contact bracket 15.
  • the contact system includes a current inflow sheet 4, a moving copper piece 5, a connecting member 6, a current outflow piece 7, a movable contact 13, and a stationary contact 14.
  • the drive shaft 8 is wound with a contact spring 11 and a return spring 12, and sequentially passes through the movable iron core 9 and the static iron core 10.
  • the movable iron core 9 and the static iron core 10 are annular hollow, and the material is It is a magnetically permeable material and has a fixed air gap.
  • the drive shaft 8 also passes through the movable contact holder 15 and is coupled to the movable contact holder 15 by a snap spring.
  • the surface of the bobbin 2 is covered with an insulating layer and is fixed to the outside of the movable iron core 9 and the static iron core 10.
  • the yoke 1 is wrapped around the upper and lower sides and the left and right sides of the movable iron core 9, the static iron core 10, and the bobbin 2 to constitute a magnetic circuit.
  • the current inflow piece 4 and the current outflow piece 7 are both fixed on the base bracket 3, the movable copper piece 5 is fixed on the movable contact holder 15, the movable contact 13 is fixed on the moving copper piece 5, and the static contact 14 is fixed on the fixed contact 14
  • the current flows out of the sheet 7, the current flowing into the sheet 4 and the moving copper sheet 5 are connected by a soft connection 6 (using a copper soft connection or an aluminum soft connection), one end of the soft connection 6 is welded or riveted on the current flowing into the sheet 4, and the other end is welded or Riveted on the moving copper piece 5.
  • the movable iron core 9 moves in the direction in which the air gap is reduced by the magnetic field generated by the coil, and at the same time, the current is transmitted to the sheet 4 and the movable contact holder 15 by driving the transmission shaft 8 and The moving copper piece 5 fixed thereto is moved in the direction in which the contacts are closed, and the moving direction is the normal direction of the contact section.
  • the drive shaft 8 is manipulated by the coil and the movable iron core 9 to push the movable contact holder 15 while compressing the contact spring 11 and the return spring 12, and the contact spring 11 applies pressure to the movable contact holder 15, Thereby, the movable contact 13 and the stationary contact 14 are reliably contacted.
  • the contact spring 11 When the movable contact 13 and the stationary contact 14 are attracted, the contact spring 11 provides a suitable contact pressure, as shown in Fig. 2, the contact can be stably closed. In order to ensure the life of the contact, a certain overtravel is provided between the movable contact 13 and the stationary contact 14. In addition, in order to further ensure reliable contact between the movable contact 13 and the static contact 14, a waist hole 16 is disposed in the middle of the movable contact bracket 15, as shown in FIG. 3, for the movable contact bracket 15 to be performed in a small range. Fine adjustment facilitates better contact of the movable contact 13 and the stationary contact 14.
  • the high-voltage relay After the coil is energized, there may be a case where the high-voltage relay passes the instantaneous large current.
  • the current flows into the sheet 4 and the moving copper piece 5, the current flows oppositely and interacts to generate a magnetic field, and the moving copper piece 5 generates an electromagnetic force under the action of the magnetic field.
  • the electromagnetic force is opposite to the direction of the electric repulsion of the contact and is applied to the movable contact 13 and the stationary contact 14 through the movable contact holder 15, thereby preventing the dynamic copper piece 5 from being deformed.
  • the length and mounting manner of the moving copper piece 5 are reasonably set so that the generated electromagnetic force completely cancels the electric repulsion of the contact.
  • the drive shaft 8 drives the movable contact holder 15 to quickly separate the movable contact 13 and the stationary contact 14 to achieve rapid breaking.
  • the present embodiment is provided with permanent magnet pieces on both sides of the contact area to blow the arc to quickly lengthen and extinguish the arc.
  • the control system designed in this embodiment can well control the contact of the moving and static contacts when the relay is energized, and can effectively ensure the life of the contact by setting a certain overtravel between the contacts; when the relay encounters an instant In the event of a large current surge, the contact system uses the generated magnetic field to counteract the electric repulsion between the moving and stationary contacts to avoid deformation of the internal relay device. After the relay is powered down, the control system drives the moving and stationary contacts to achieve rapid breaking.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Contacts (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Relay Circuits (AREA)

Abstract

一种耐瞬时大电流冲击的高压继电器，包括电磁系统，操控系统、触点系统和底座支架；本方案利用触点系统产生的电磁力，能解决因瞬时大电流产生的电动斥力而引起触点斥开的问题。

Description

一种耐瞬时大电流冲击的高压继电器
本申请要求于2017年10月25日提交中国国家知识产权局、申请号为CN201711057040.X，发明名称为“一种耐瞬时大电流冲击的高压继电器”的中国专利申请的优先权，并要求于2017年10月25日提交中国国家知识产权局、申请号为CN201721387275.0，发明名称为“一种耐瞬时大电流冲击的高压继电器”的中国专利申请的优先权，上述两件专利申请的全部内容通过引用结合在本申请中。
技术领域
本发明涉及一种高压继电器，特别是涉及一种耐瞬时大电流冲击的高压继电器。
背景技术
电磁继电器是一种机电元件，广泛应用于电力控制、工业自动化装置和家用电器等。它实际上是用较小的电流、较低的电压去控制较大电流、较高电压的一种“自动开关”，在电路中起着自动调节、安全保护、转换电路等作用。
在通信系统HVDC(高压直流电源)配电中多为一对多的供电方式，当某一支路发生故障(绝缘失效、短路等异常)时会引起母线电压跌落，导致其他正常支路掉电问题，为提升HVDC(高压直流电源)供电可靠性，需要一款能够支持当HVDC(高压直流电源)支路发生故障时支路快速自动隔离要求的小型化继电器。同时，通信系统HVDC(高压直流电源)继电器使用工况为户外通信设施，所以对防雷电流冲击有较高要求。
现有使用的直片式导电片的电磁继电器，当有瞬时大电流时，触点间的电动斥力会远大于触点终压力，使触点斥开并产生强电弧，触点因产生瞬时高温而熔融烧毁。电磁继电器设计主要利用洛仑兹力原理，现有的公开专利主要利用可动簧片的变形量对动、静触点施加触头压力，可以抵抗的短路电流大小与两簧片间的距离和簧片的变形量密切相关，利用簧片变形的方式很难适用于较大的冲击电流；触点分离依靠簧片变形实现，难以满足能够抵抗较大的冲击电流且分断速度受限；簧片的刚度，变形、疲劳等因素对于机械寿命和电寿命有着严重的影响；同时，簧片对加工工艺要求较高且簧片的材料特性决定了断开状态下动、静触点间的开距有限，限制了其使用工况电压等级及绝缘耐压水平的提升。
发明内容
针对以上不足，本发明提供一种耐瞬时大电流冲击的高压继电器，通过合理设计触点结构和操控系统，可以实现电流的快速分断，同时通过动、静触点间距的增大提高耐压水平。
一种耐瞬时大电流冲击的高压继电器，包括：电磁系统、操控系统、触点系统和底座支架3；其中，所述电磁系统与操控系统相连，用于产生磁场为所述操控系统提供驱动力；所述操控系统与所述触点系统相连，用于操控触点系统中触点的吸合和分离；所述触点系统在所述高压继电器通过瞬时大电流时产生电磁力，以抵消触点间的电动斥力；
所述电磁系统包括磁轭1、线圈骨架2、动铁芯9和静铁芯10；其中，所述线圈骨架2固定于所述动铁芯9和静铁芯10的外侧；所述磁轭1包裹在动铁芯9、静铁芯10和线圈骨架2的上下和左右两侧，构成磁路；
所述操控系统包括传动轴8、触头弹簧11、复位弹簧12和动触头支架15；其中，所述触头弹簧11、复位弹簧12缠绕于传动轴8之上，所述传动轴8穿过所述动触头支架15，且与所述动触头支架15通过卡簧连接；
所述触点系统包括电流流入片4、动铜片5、连接件6、电流流出片7、动触点13、静触点14和腰圆孔16；其中，所述电流流入片4和电流流出片7固定于底座支架3上；所述动触点13固接于动铜片5上，所述静触点14固接于电流流出片7上；所述连接件(6)铆接或焊接在电流流入片(4)和动铜片(5)上；
所述动铁芯9和静铁芯10为环形中空，其材料为导磁材料，且有固定气隙；
所述动铁芯9在所述高压继电器通电后带动传动轴8运动，使动触头支架15和动铜片5向触点闭合的方向运动；
所述触头弹簧11用于提供触点压力，使动触点13和静触点14能够可靠接触；
所述复位弹簧12用于通过传动轴8带动动触头支架15使动触点13和静触点14快速分离；
所述电流流入片4和动铜片5在所述高压继电器通过瞬时大电流时相互作用产生磁场，使动铜片5产生与触点电动斥力方向相反的电磁力；
所述动触点3和静触点4之间设有超程。
与现有技术相比，本发明带来的有益技术效果为：
本发明在不增大产品的外形尺寸和不增加线圈控制部分的功耗的基础上，通过合理设计触点结构和操控系统，可以实现电流的快速分断，同时通过动、静触点间距的增大提高耐压水平，更加适用于高电压条件。而且，利用电流流入铜片和动铜片的异向电流产生的电磁力抵抗瞬时大电流在动静触点间产生的电动斥力。该继电器结构紧凑，耐冲击振动性能强，电寿命和机械寿命高，价格便宜，可以批量化生产。
附图说明
图1为本实例中一种耐瞬时大电流冲击的高压继电器结构示意图；
其中，1为磁轭，2为线圈骨架，3为底座支架，4为电流流入片，5为动铜片，6软连接，7为电流流出片，8为传动轴，9为动铁芯，10为静铁芯，11为触头弹簧，12复位弹簧，13为动触点，14为静触点，15为动触头支架，16为腰圆孔；
图2为图1的触点系统的触点闭合示意图；
图3为图1的动铜片和动触头支架的结构示意图。
具体实施方式
下面结合附图和实施例对本发明的技术方案进行详细描述。
参照图1，为本实施例的一种耐瞬时大电流冲击的高压继电器，包括电磁系统、操控系统和触点系统。电磁系统包括磁轭1、线圈骨架2、线圈(图中未显示)，动铁芯9和静铁芯10。操控系统包括底座支架3、传动轴8、触头弹簧11、复位弹簧12和动触头支架15。触点系统包括电流流入片4、动铜片5、连接部件6、电流流出片7、动触点13、静触点14。本实施例中，传动轴8上缠绕有触头弹簧11和复位弹簧12，依次穿过动铁芯9和静铁芯10，优选地，动铁芯9和静铁芯10为环形中空，材料为导磁材料，且有固定气隙。传动轴8还穿过动触头支架15且与动触头支架15通过卡簧相连接。线圈骨架2表面覆盖有绝缘层，固定于动铁芯9和静铁芯10的外侧。磁轭1包裹在动铁芯9、静铁芯10和线圈骨架2的上下和左右两侧，构成磁路。电流流入片4和电流流出片7均固定于底座支架3上，动铜片5固定于动触头支架15上，动触点13固接于动铜片5上，静触点14固接于电流流出片7上，电流流入片4和动铜片5通过软连接6(采用铜软连接或铝软连接)连接，软连接6的一头焊接或铆接在电流流入片4上，另一头焊接或铆接在动铜片5上。
通过采用上述结构，当线圈通电后，动铁芯9在线圈所产生的磁场作用下朝着气隙减小的方向运动，同时通过带动传动轴8使电流流入片4和动触头支架15以及固定于其上的动铜片5向触点闭合的方向运动，运动方向为触点截面法向方向。在运动过程中，通过线圈和动铁芯9操纵传动轴8从而推动动触头支架15，同时压缩触头弹簧11和复位弹簧12，触头弹簧11将压力施加在动触头支架15上，从而使动触点13和静触点14可靠接触。当动触点13和静触点14吸合后，触头弹簧11提供一个合适的触点压力，如图2所示，触点能够稳定闭合。为保证触点的寿命，动触点13和静触点14之间设有一定超程。此外，为进一步保证动触点13和静触点14可靠接触，动触头支架15中间设有一个腰圆孔16，如图3所示，用于动触头支架15在较小范围内进行微调，有利于动触点13和静触点14的较好接触。
线圈通电后可能会出现高压继电器通过瞬时大电流的情况，此时，由于电流流入片4和动铜片5电流流向相反并相互作用产生磁场，动铜片5在磁场的作用下产生电磁力，该电磁力与触点电动斥力方向相反且通过动触头支架15施加于动触点13和静触点14上，避免了动铜片5产生形变。本实施例通过合理设置动铜片5的长度和安装方式以使所产生的电磁力完全抵消触点电动斥力。
线圈掉电后，在复位弹簧12的作用下，传动轴8带动动触头支架15使动触点13和静触点14快速分离，从而实现快速分断。为使电弧尽快熄灭，本实施例在触点区域两侧设有永磁片以吹动电弧使电弧迅速拉长熄灭。
本实施例设计的操控系统在继电器通电的情况下能很好的操控动、静触点的接触，且通过在触点间设置一定超程，能够有效的保证触点的寿命；当继电器遭遇瞬时大电流的冲击时，触点系统利用所产生的磁场抵消动、静触点间的电动斥力，避免继电器内部装置产生形变。继电器掉电后，操控系统带动动、静触点实现快速分断。
虽然本发明已以较佳实施例揭露如上，然而并非用以限定本发明，任何熟悉本专业的技术人员，在不脱离本发明技术方案范围内，当可利用上述揭示的技术内容做出些许更动 或修饰为等同变化的等效实施例，但凡是未脱离本发明技术方案内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化和修饰，均仍属于本发明技术方案的范围内。

Claims (9)

  1. 一种耐瞬时大电流冲击的高压继电器，包括：电磁系统、操控系统、触点系统和底座支架(3)；其中，所述电磁系统与操控系统相连，所述电磁系统用于产生磁场为所述操控系统提供驱动力；所述操控系统与所述触点系统相连，所述操控系统用于操控触点系统中触点的吸合和分离；所述触点系统在所述高压继电器通过瞬时大电流时产生电磁力，以抵消触点间的电动斥力；
    所述触点系统包括电流流入片(4)、动铜片(5)、连接件(6)、电流流出片(7)、动触点(13)、静触点(14)；其中，所述电流流入片(4)和电流流出片(7)固定于底座支架(3)上；所述动触点(13)固接于动铜片(5)上，所述静触点(14)固接于电流流出片(7)上；所述连接件(6)铆接或焊接在电流流入片(4)和动铜片(5)上；
    所述连接件(6)为软连接件。
  2. 根据权利要求1所述的高压继电器，其特征在于：所述电流流入片(4)和动铜片(5)在所述高压继电器通过瞬时大电流时相互作用产生磁场，使动铜片(5)产生与触点电动斥力方向相反的电磁力。
  3. 根据权利要求1所述的高压继电器，其特征在于：所述动触点(3)和静触点(4)之间设有超程。
  4. 根据权利要求1所述的高压继电器，其特征在于：所述电磁系统包括磁轭(1)、线圈骨架(2)、动铁芯(9)和静铁芯(10)；其中，所述线圈骨架(2)固定于所述动铁芯(9)和静铁芯(10)的外侧；所述磁轭(1)包裹在动铁芯(9)、静铁芯(10)和线圈骨架(2)的上下和左右两侧，构成磁路。
  5. 根据权利要求4所述的高压继电器，其特征在于：所述动铁芯(9)和静铁芯(10)为环形中空，其材料为导磁材料，且有固定气隙。
  6. 根据权利要求1或5所述的高压继电器，其特征在于：所述动铁芯(9)在所述高压继电器通电后带动传动轴(8)运动，使动触头支架(15)和动铜片(5)向触点闭合的方向运动。
  7. 根据权利要求1所述的高压继电器，其特征在于：所述操控系统包括传动轴(8)、触头弹簧(11)、复位弹簧(12)和动触头支架(15)和腰圆孔(16)；其中，所述触头弹簧(11)、复位弹簧(12)缠绕于传动轴(8)之上，所述传动轴(8)穿过所述动触头支架(15)，且与所述动触头支架(15)通过卡簧连接；所述腰圆孔(16)设置于所述动触头支架(15)的中间。
  8. 根据权利要求7所述的高压继电器，其特征在于：所述触头弹簧(11)用于提供触点压力，使动触点(13)和静触点(14)能够可靠接触。
  9. 根据权利要求7所述的高压继电器，其特征在于：所述复位弹簧(12)用于通过传动轴(8)带动动触头支架(15)使动触点(13)和静触点(14)快速分离。
PCT/CN2018/109552 2017-10-25 2018-10-10 一种耐瞬时大电流冲击的高压继电器 WO2019080709A1 (zh)

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