WO2018035886A1 - 一种防二次电弧的电连接方法 - Google Patents

一种防二次电弧的电连接方法 Download PDF

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WO2018035886A1
WO2018035886A1 PCT/CN2016/097855 CN2016097855W WO2018035886A1 WO 2018035886 A1 WO2018035886 A1 WO 2018035886A1 CN 2016097855 W CN2016097855 W CN 2016097855W WO 2018035886 A1 WO2018035886 A1 WO 2018035886A1
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electrical
connection
conductive medium
electrical connection
conductor
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PCT/CN2016/097855
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French (fr)
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周刚
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成都阿尔刚雷科技有限公司
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/53—Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/04—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation using electrically conductive adhesives
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials

Definitions

  • the invention relates to the field of electrical connection of connectors, and more particularly to an electrical connection method for preventing secondary arcs.
  • An electric arc is a gas discharge phenomenon in which an electric current is generated by a momentary spark generated by some insulating medium such as air.
  • the metal surface of the contact causes electrons to escape due to primary electron emission (thermionic emission, field emission or photoemission), and gas atoms or molecules in the gap generate electrons and ions by ionization (impingement ionization, photoionization and thermal ionization).
  • ionization ionization
  • electron or ion bombardment of the emitting surface in turn causes secondary electron emission.
  • the ion concentration in the gap is sufficiently large, the gap is electrically broken down to generate an arc. It not only has a great destructive effect on the contacts, but also extends the time to open the circuit.
  • the arcs generated by the two electrical connection ends are called an arc; and the two electrical connections are electrically connected after the initial electrical connection.
  • the electrical connector has kinetic energy, and the electrical contact surface is separated and collides, and the generated arc is called a secondary arc. Since the secondary arc is often generated between the gaps of the two electrical connections, it is easily overlooked, but the secondary arc tends to cause damage to the electrical contacts, resulting in lower equipment life.
  • the object of the present invention is to provide an electrical connection method for preventing secondary arc in view of the above problems.
  • the design is simple and popular, and overcomes the prejudice that the fluid medium cannot be promoted in the field of electrical connection, and can guarantee two After the first electrical connection, the electrical connector no longer pushes off, ensuring the reliability of the electrical connection and preventing the occurrence of secondary arcing.
  • the design does not limit the shape of the conductive medium, can ensure the availability and popularization of the device, and adopts the way of filling the electrical connection surface with the conductive medium, so that the electric power-on area can always be electrically contacted, thereby solving the problem of separating or falling off the electrical contact surface. .
  • the invention discloses an electrical connection preventing method for secondary arcing.
  • a flowable conductive medium is filled into a gap between two electrical connecting ends.
  • the electrical contact faces of the electrical connection ends tend to be uneven, and a plurality of discharge tips are formed, and during the connection process, since the kinetic energy difference between the two electrical connection ends, the electrical contact faces are initially contacted.
  • the separation of the electrical contact surface is caused.
  • a secondary arc is generated in the gap generated by the separation, and after the conductive medium having fluidity, the impulse generated by the contact of the two electrical connection ends can be buffered.
  • the conductive medium comprises a paste, a gel, a liquid, a powder, or a gas, and the conductive medium
  • the resistivity is in accordance with the needs of the electrical connection. Conductive media using these characteristics can be selected according to actual needs, thereby increasing the range of options.
  • the fluidity of the conductive medium can be selected according to the electrical connection ring.
  • the conductive medium is a combination of a paste, a gel, a liquid, a powder, or a gas.
  • the use of multiple types of combinations also increases the range of choices for conductive media.
  • the thickness of the conductive medium is not less than D; D is the maximum gap width between the two electrical connection ends after the first electrical connection between the two electrical connection ends of the electrical connection mechanism. The thickness can ensure the initial contact between the two electrical connections, and the conductive medium is filled into the gap to ensure that the contact area is larger and larger after the initial electrical connection, ensuring conductivity and secondary arc resistance.
  • the two electrical connection ends are respectively a first connection end and a second connection end
  • the conductive medium is disposed on the electrical contact surface of the first connection end, and the first connection end and the second connection end are electrically connected after being electrically connected for the first time.
  • the medium is always filled in the gap between the first connection end and the second connection end.
  • the shape of the conductive medium varies with the shape of the gap. Since the conductive medium has fluidity, the conductive medium is gradually squeezed into the gap during the connection to contain electrical conductivity at the gap.
  • An electrical connector for preventing secondary arcing wherein a flowable conductive medium layer is disposed on an electrical contact surface of the electrical connector.
  • the electrically conductive medium layer can be deformed under pressure so as to fill the gap between the electrical connectors when connected, thereby ensuring that the energized area of the electrical contact surface is always raised.
  • the electrical connector includes a first connection end and a second connection end, and the conductive medium layer is disposed on the electrical contact surface of the first connection end or/and the second connection end.
  • the conductive medium layer can be simultaneously provided on one connection surface or on both connection surfaces to improve conductivity and fall-off resistance.
  • connection manner of the first connection end and the second connection end is a plug-in type, a snap-on type, a surface contact type or a point contact type.
  • the first connecting end comprises a first insulating layer and a first conductor, the first insulating layer is wrapped outside the first conductor, the connecting side of the first conductor is provided with a connecting groove, and the conductive medium layer is provided with the inner surface of the connecting groove;
  • the connecting end includes a second insulating layer and a second conductor, the second insulating layer is wrapped outside the second conductor, and the connecting side of the second conductor is provided with a connecting portion that cooperates with the connecting groove.
  • the plug-in structure can ensure the stability of the electrical contact during the connection process, improve the stability of the connection, and is also a commonly used electrical connection method.
  • the design is simple and popular, and overcomes the prejudice that the fluid medium cannot be promoted in the field of electrical connection. It can ensure that the two electrical connectors do not push off after the first electrical connection, and the reliability of the electrical connection is ensured. And prevent the occurrence of secondary arc.
  • This design does not limit the shape of the conductive medium, can ensure the availability and popularization of the equipment, and adopts the way of filling the electrical connection surface with the conductive medium, so that the electric power-on area can always be electrically contacted, thereby realizing the separation or falling off of the electrical contact surface. problem.
  • Figure 1 is an electrical connection structure diagram of a plug-in anti-secondary arc
  • Figure 2 is a diagram showing the electrical connection structure of the contact type secondary arc prevention
  • Figure 3 is a gap state diagram of the electrical contact surface
  • Figure 4 is a comparative growth diagram of the presence or absence of a conductive medium for the energized area when the plug-in electrical connector is connected;
  • Fig. 5 is a graph showing the comparative growth of the conductive medium with or without the energized area when the contact type electrical connector is connected.
  • the secondary arc resistant electrical connector of the present invention includes a first connecting end 1 and a second connecting end 2.
  • the first connecting end 1 includes a first insulating layer 11 and a first conductor 12.
  • the first insulating layer 11 is wrapped around the outside of the first conductor 12.
  • the connecting side of the first conductor 12 is provided with a connecting groove 13 and a fluid conductive layer. 14 is provided to the inner surface of the connection groove 13.
  • the second connecting end 2 includes a second insulating layer 21 and a second conductor 22.
  • the second insulating layer 21 is wrapped around the outside of the second conductor 22.
  • the connecting side of the second conductor 22 is provided with a connecting portion 23 that cooperates with the connecting groove 13.
  • connection portion 23 is first embedded in the connection portion 23, and the kinetic energy difference between the connection groove 13 and the connection portion 23 is caused.
  • the connecting groove 13 and the connecting portion 23 collide with each other, and a gap is formed between the connecting groove 13 and the connecting portion 23, and the conductive medium layer 14 is deformed during the collision and filled into the gap to ensure the connecting groove 13 and the connection.
  • the secondary arc resistant electrical connector of the present invention includes a first connecting end 1 and a second connecting end 2.
  • the first connecting end 1 includes a first insulating layer 11 and a first conductor 12, and the second connecting end 2 includes a second insulating layer 21 and a second conductor 22; a conductive dielectric layer is disposed on the electrical contact surface on the front side of the first conductor 12. 14.
  • the conductive medium layer 14 has fluidity.
  • the conductive medium may be in the form of a paste, a gel, a liquid, a powder, or a gas, or a combination of two or more thereof, on the premise that the electrical resistivity of the conductive medium meets the requirements of electrical connection.
  • the thickness of the conductive medium layer 14 is generally not less than D; D is the maximum gap width between the two electrical connection ends after the first electrical connection between the two electrical connection ends of the electrical connection mechanism. After the first connection end 1 and the second connection end 2 are in electrical communication for the first time, the conductive medium is always filled in the gap between the first connection end 1 and the second connection end 2.
  • the shape of the conductive medium varies with the shape of the gap.
  • the conductive medium layer 14 may be disposed on the electrical contact faces of the first connection end 1 or/and the second connection end 2.
  • the connection manner of the first connection end 1 and the second connection end 2 may also be a plug-in type, a snap-on type, a surface contact type or a point contact type.

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  • Connector Housings Or Holding Contact Members (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Abstract

一种防二次电弧的电连接方法，在两电连接端（1，2）连接时，将可流动的导电介质（14）填充到两电连接端（1，2）之间的间隙中。两电连接端（1，2）在连接过程中，电连接端（1，2）的电接触面往往凹凸不平，并形成许多的放电尖端，而且连接过程中，两电连接端（1，2）之间具有动能差，使电接触面初次接触后，在冲量作用下，引起电接触面的分离，此时，将在分离产生的间隙产生二次电弧，而采用具有流动性的导电介质（14）后，不仅能缓冲两电连接端（1，2）接触而产生的冲量，而且能够在电接触面分离时，保证导电性，从而防止二次电弧。

Description

一种防二次电弧的电连接方法 技术领域
本发明涉及连接器的电连接领域，尤其是一种防二次电弧的电连接方法。
背景技术
电弧是一种气体放电现象，电流通过某些绝缘介质(例如空气)所产生的瞬间火花。触头金属表面因一次电子发射(热离子发射、场致发射或光电发射)导致电子逸出，间隙中气体原子或分子会因电离(碰撞电离、光电离和热电离)而产生电子和离子。另外，电子或离子轰击发射表面又会引起二次电子发射。当间隙中离子浓度足够大时，间隙被电击穿而就产生了电弧。它不仅对触头有很大的破坏作用，而且使断开电路的时间延长。
在现实的电器连接的过程中，两电连接端在初次电连接之前，两电连接端相互靠近从而产生的电弧，被称为一次电弧；而两电连接端在初次电连接之后，由于电连接过程中电连接器带有动能，在此电接触面发生碰撞而分离，并产生的电弧，称为二次电弧。二次电弧由于往往产生在两电连接端的间隙之间，因此容易被人们忽视，但是二次电弧往往会造成电接触端的损坏，造成设备使用寿命更低。
发明内容
本发明的发明目的在于：针对上述存在的问题，提供一种防二次电弧的电连接方法,本设计简单，推广性好，克服了流动性介质无法在电连接领域推广的偏见，能够保证两电连接器在第一次电连通后，不再发生推脱，保证电连接的可靠性，并防止二次电弧的产生。本设计的并不对导电介质的形状进行限制，能够保证设备的可用性和推广性，采用导电介质填充电连接面的方式，使电通电面积始终能够导电接触，实现解决电接触面分离或脱落问题。。
本发明采用的技术方案如下：
本发明公开了一种防二次电弧的电连接方法，在两电连接端连接时，将可流动的导电介质填充到两电连接端之间的间隙中。两电连接端在连接过程中，由于电连接端的电接触面往往凹凸不平，并形成许多的放电尖端，而且连接过程中，由于两电连接端之间具有动能差，使电接触面初次接触后，在冲量作用下，引起电接触面的分离，此时，将在分离产生的间隙产生二次电弧，而采用具有流动性的导电介质后，不仅能缓冲两电连接端接触使产生的冲量，而且能够保证电接触面的分离时，保证导电性，从而防止二次电弧。
进一步，所述导电介质包括膏状、胶状、液状、粉末状、或气体状，所述导电介质 的电阻率符合电连接的需要。采用这些特性的导电介质，能够根据实际需要而选择不同的类型，从而提高可选范围。可以根据电连接环形选择导电介质的流动性强弱。
进一步，所述导电介质为膏状、胶状、液状、粉末状、或气体状的多个组合。采用多种类型的组合，同样能够提高导电介质的可选范围。
进一步，所述导电介质的厚度不小于D；D为在电连接机构的两电连接端第一次电连通后，两电连接端之间的最大间隙宽度。该厚度能够保证两电连接端初次接触，导电介质就填充到间隙中，保证初次电连接后，接触的面积越来越大，保证导电性和防二次电弧的特性。
进一步，两电连接端分别为第一连接端和第二连接端，导电介质设置在第一连接端的电接触面上，当第一连接端与第二连接端在第一次电连通后，导电介质始终填充在第一连接端与第二连接端之间的间隙中。
进一步，导电介质的形状随间隙的形状变化。由于导电介质具有流动性，因此，导电介质在连接件过程中逐渐被挤压到间隙中从而包含保证间隙处的导电性。
一种防二次电弧的电连接器，在电连接器的电接触面上设置可流动的导电介质层。导电介质层能够在压力性变形，从而填充到电连接器连接时之间的间隙处，从而保证始终电接触面的通电面积始终升高。
进一步，电连接器包括第一连接端和第二连接端，导电介质层设置在第一连接端或/和第二连接端的电接触面上。可以在一个连接面或者两个连接面上同时设置导电介质层，从而提高导电性和防脱落性。
进一步，第一连接端与第二连接端的连接方式为插接式、卡接式、面接触式或点接触式。
进一步，第一连接端包括第一绝缘层及第一导体，第一绝缘层包裹在第一导体外侧，第一导体的连接侧设置有连接槽，导电介质层设置连接槽的内表面；第二连接端包括第二绝缘层及第二导体，第二绝缘层包裹在第二导体外侧，第二导体的连接侧设置有与连接槽配合的连接部。该插接式的结构能够保证连接过程中，电接触的稳定性，提高连接的稳固性，同时也是常用的一种电连接方式。
综上所述，由于采用了上述技术方案，本发明的有益效果是：
1.本设计简单，推广性好，克服了流动性介质无法在电连接领域推广的偏见，能够保证两电连接器在第一次电连通后，不再发生推脱，保证电连接的可靠性，并防止二次电弧的产生。
2.本设计的并不对导电介质的形状进行限制，能够保证设备的可用性和推广性，采用导电介质填充电连接面的方式，使电通电面积始终能够导电接触，实现解决电接触面分离或脱落问题。
附图说明
本发明将通过例子并参照附图的方式说明，其中：
图1是插入式防二次电弧的电连接结构图；
图2是接触式防二次电弧的电连接结构图；
图3是电接触面的间隙状态图；
图4是插入式电连接器连接时通电面积的有无导电介质的对比增长图；
图5是接触式电连接器连接时通电面积的有无导电介质的对比增长图。
附图标记：1-第一连接端，11-第一绝缘层，12-第一导体，13-连接槽，14-导电介质层，2-第二连接端，21-第二绝缘层，22-第二导体，23-连接部。
具体实施方式
实施例1：
如图1所示，本发明的防二次电弧的电连接器，包括第一连接端1和第二连接端2。
第一连接端1包括第一绝缘层11及第一导体12，第一绝缘层11包裹在第一导体12外侧，第一导体12的连接侧设置有连接槽13，具有流动性的导电介质层14设置连接槽13的内表面。
第二连接端2包括第二绝缘层21及第二导体22，第二绝缘层21包裹在第二导体22外侧，第二导体22的连接侧设置有与连接槽13配合的连接部23。
如图3、4所示，第一连接端1与第二连接端2的电连接过程中，连接部23先嵌入到连接部23中，由于连接槽13与连接部23之间的动能差，使连接槽13与连接部23相互碰撞，并使连接槽13与连接部23之间分离产生间隙，导电介质层14在碰撞的过程中发生变形，并填充到间隙中，保证连接槽13与连接部23之间具有足够的通电面积，使连接槽13与连接部23之间始终导通，不产生能够形成电弧的电势差；随着连接部23继续插入连接槽13，当连接部23与连接槽13上凹凸不平或者局部不匹配并产生间隙时，具有流动性的导电介质能够填充到间隙中，能够防止连接部23与连接槽13的实际通电面积降低。当连接部23完全插入连接槽13中后，由于导电介质填充到连接槽13与连接部23之间的间隙中，从而增大了连接部23与连接槽13的通电面积。
实施例2：
如图2所示，本发明的防二次电弧的电连接器，包括第一连接端1和第二连接端2。
第一连接端1包括第一绝缘层11及第一导体12，第二连接端2包括第二绝缘层21及第二导体22；第一导体12前侧的电接触面上设置了导电介质层14。导电介质层14具有流动性。
如图3、5所示，当第一连接端1与第二连接端2电连接时，第一导体12及第二导体22以一定速度相互靠近，并由于第一导体12及第二导体22的动能差，在第一导体12与第二导体22撞击且第一次导电后，其撞击分离所产生的间隙由变形后的导电介质层14迅速填充，使第一导体12与第二导体22之间，从而不形成足以产生电弧的电势差；当第一导体12与第二导体22连接完成后，其第一导体12与第二导体22电接触面之间的间隙填充了导电介质，从而提高通电面积。
在导电介质的电阻率符合电连接的需要的前提下，导电介质可以膏状、胶状、液状、粉末状、或气体状，或者其中两种以上的组合。导电介质层14的厚度一般不小于D；D为在电连接机构的两电连接端第一次电连通后，两电连接端之间的最大间隙宽度。第一连接端1与第二连接端2在第一次电连通后，导电介质始终填充在第一连接端1与第二连接端2之间的间隙中。导电介质的形状随间隙的形状变化。导电介质层14可以设置在第一连接端1或/和第二连接端2的电接触面上。第一连接端1与第二连接端2的连接方式还可以为插接式、卡接式、面接触式或点接触式。

Claims (10)

  1. 一种防二次电弧的电连接方法，其特征在于，在两电连接端连接时，将可流动的导电介质填充到两电连接端之间的间隙中。
  2. 如权利要求1所述的防二次电弧的电连接方法，其特征在于，所述导电介质包括膏状、胶状、液状、粉末状、或气体状，所述导电介质的电阻率符合电连接的需要。
  3. 如权利要求2所述的防二次电弧的电连接方法，其特征在于，所述导电介质为膏状、胶状、液状、粉末状、或气体状的多个组合。
  4. 如权利要求1所述的防二次电弧的电连接方法，其特征在于，所述导电介质的厚度不小于D；D为在电连接机构的两电连接端第一次电连通后，两电连接端之间的最大间隙宽度。
  5. 如权利要求1所述的防二次电弧的电连接方法，其特征在于，两电连接端分别为第一连接端(1)和第二连接端(2)，导电介质设置在第一连接端(1)的电接触面上，当第一连接端(1)与第二连接端(2)在第一次电连通后，导电介质始终填充在第一连接端(1)与第二连接端(2)之间的间隙中。
  6. 如权利要求1所述的防二次电弧的电连接方法，其特征在于，导电介质的形状随间隙的形状变化。
  7. 一种防二次电弧的电连接器，其特征在于，在电连接器的电接触面上设置可流动的导电介质层(14)。
  8. 如权利要求7所述的防二次电弧的电连接器，其特征在于，电连接器包括第一连接端(1)和第二连接端(2)，导电介质层(14)设置在第一连接端(1)或/和第二连接端(2)的电接触面上。
  9. 如权利要求8所述的防二次电弧的电连接器，其特征在于，第一连接端(1)与第二连接端(2)的连接方式为插接式、卡接式、面接触式或点接触式。
  10. 如权利要求8所述的防二次电弧的电连接器，其特征在于，第一连接端(1)包括第一绝缘层(11)及第一导体(12)，第一绝缘层(11)包裹在第一导体(12)外侧，第一导体(12)的连接侧设置有连接槽(13)，导电介质层(14)设置连接槽(13)的内表面；第二连接端(2)包括第二绝缘层(21)及第二导体(22)，第二绝缘层(21)包裹在第二导体(22)外侧，第二导体(22)的连接侧设置有与连接槽(13)配合的连接部(23)。
PCT/CN2016/097855 2016-08-23 2016-09-02 一种防二次电弧的电连接方法 WO2018035886A1 (zh)

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