CN208061971U - High voltage direct current break-make device - Google Patents

Abstract

The utility model discloses a kind of high voltage direct current break-make device, including shell and the contact chamber to set within it and electromagnetic conversion room, the indoor catch bar of electromagnetic conversion, which moves up and down, can drive the indoor contact bridge of contact to move up and down and then the movable contact is made to engage conducting with fixed contact or detach disconnection, the contact chamber is by guiding bottom plate and is provide with inner casing above it and is formed a closed space using patching form, the guiding bottom plate and inner casing are made of arc resistant plastic, the electromagnetic conversion room is to enclose metal framework made of setting by shield bracket and shielding upper plate.The utility model is simple in structure, and are-tight property is good, long lifespan.

Description

High voltage direct current break-make device

Technical field

The utility model belongs to technical field of electric power, and in particular to a kind of high voltage direct current break-make device.

Background technology

High voltage direct current break-make device is loaded for switching high-tension electricity, such as between the battery case and PDU of new-energy automobile Connection.Such break-make device includes contact chamber, possible running temperature, the internal pressure of permission, electrical isolation capabilities and There is higher requirement to contact chamber in terms of arc resistance.

Traditionally, such contact chamber is manufactured by common plastic material, is caused in terms of production and assembling the advantages of. For example, the elastic characteristic of plastic material can be used to generate indentation or other elastic connections.However, the thermal resistance and electricity of plastic material are exhausted Edge ability is restricted.The flame impingement caused by electric arc occurred when electrical load is interrupted can lead to the table of plastic material The burning (oxidation) in face, greatly reduces insulation resistance.

The selection substituted in the prior art includes manufacturing the contact chamber by ceramic material.Such as Chinese patent application Disclosed in CN102074387A, such material has extraordinary resistance to arc flame impact.However, ceramic material Material only has lower elasticity, it means that is unable to the lower indentation of use cost or is connected, is difficult to make contact in this way Chamber pressure is tight, and leakproofness and flatness are all poor；And most importantly the prior art high voltage direct current break-make device internal structure not Rationally.

Utility model content

The purpose of the utility model is to overcome the shortcomings of the prior art, and it is logical to provide a kind of high voltage direct current simple in structure Disconnected device.

The purpose of this utility model is achieved through the following technical solutions：

A kind of high voltage direct current break-make device, including shell and the contact chamber to set within it and electromagnetic conversion room, the contact Interior is disposed with the first contact member and the second contact member, first contact member and the second contact member shape it is identical and Include the exit being arranged contacting indoor fixed contact and being arranged outside contact chamber, further includes having contact in the contact chamber Bridge and the movable contact for being set to contact bridge left and right ends, a catch bar, which moves up and down, can drive the contact bridge to move up and down in turn The movable contact is set to engage conducting with fixed contact or detach disconnection, the contact chamber is by guiding bottom plate and to be provide with above it Inner casing form a closed space using patching form, the guiding bottom plate and inner casing are made of arc resistant plastic, institute It is to enclose metal framework made of setting by shield bracket and shielding upper plate to state electromagnetic conversion room, and coil brace is arranged inside and is wound on The coil of its periphery, moving armature are movably disposed within inside coil brace, and the end of the catch bar far from contact chamber is by rigidity Ground is connected on the moving armature, and static gag bit is further fixedly arranged in the coil brace, and one end of the catch bar passes through institute It states static gag bit and extend into the contact chamber.

Preferably, the inner casing of the contact chamber includes symmetrically arranged two magnet baffles, is fixed on the magnet baffle There is blowout magnet.

Preferably, the magnet baffle is fixed on by buckle structure on the inner casing.

Preferably, the top of the catch bar is fixed there are one clamp spring is limited, and the limit clamp spring forms a Horizontal limiting Frame is moved horizontally with limiting the contact bridge, and an axle spring is additionally provided with to limit the contact bridge axle in the limit clamp spring To movement, so that the contact bridge is relatively fixed with catch bar.

Preferably, the limit clamp spring is U-shaped reed, including bottom and two sides, and the catch bar is fixed on described On bottom, the Horizontal limiting frame is respectively arranged on described two sides；The contact bridge is a tablet, the movable contact point It is located at its upper surface, the stage casing of the contact bridge extends there are two boss, and the width of the boss is equal to the Horizontal limiting frame Width.

Preferably, one end of the axle spring resists the inner surface of the bottom of the limit clamp spring, and the other end resists institute The lower surface of contact bridge is stated, the elastic force of the limit clamp spring drives the upper surface of the contact bridge to be close to the limit clamp spring always Side flange, so as to be relatively fixed between the contact bridge and the limit clamp spring；Be provided on the guiding bottom plate to The muscle of interior extension carries out the limit of horizontal direction for two sides to the limit clamp spring.

Preferably, the upper surface that the movable contact is intended for the fixed contact is rectangle.

Preferably, microswitch is additionally provided in the contact chamber, the microswitch is fixed by a bracket, the contact The elastomer block for projecting through bracket of bridge upper surface touches the microswitch.

Preferably, it is provided with PCB circuit board in the electromagnetic conversion room, the PCB circuit board is vertically placed in the electricity It in magnetic switch room, and is fixed on a PCB baffles, there are one hook, the hook catches on described outer in the outside of the PCB baffles In the opening of shell.

Preferably, circuit exit is offered on the side wall of the shell.

The beneficial effects of the utility model are mainly reflected in：

1, limit clamp spring generates the contact bridge the complete limit of horizontal direction, so that the limit clamp spring and contact bridge Level is completely fixed, and is avoided leading to the problem of the contact bridge generated because of spring ageing failure and is moved horizontally；

2, the upper surface that movable contact is intended for the fixed contact is rectangle, changes the usual thinking of conventional design；

3, the setting of microswitch makes the safety higher of the high voltage direct current break-make device of the utility model；

4, the lateral outlet of circuit, can online end crimp various models terminal improve with other control devices connect The versatility connect；

5, contact chamber is made of arc resistant plastic, while are-tight can also injection molding, ensure that the consistency of product And dimensional stability.

Description of the drawings

Technical solutions of the utility model are described further below in conjunction with the accompanying drawings：

Fig. 1：The stereoscopic schematic diagram of the utility model high voltage direct current break-make device；

Fig. 2：The elevational cross-sectional view of the utility model high voltage direct current break-make device；

Fig. 3：The exploded perspective view of the utility model high voltage direct current break-make device;

Fig. 4：The enlarged drawing of part A in Fig. 3.

Specific implementation mode

The utility model is described in detail below with reference to specific implementation mode shown in the drawings.But these embodiment party Formula is not limited to the utility model, structure that those skilled in the art are made according to these embodiments, method or Transformation functionally is all contained in the scope of protection of the utility model.

As shown in Figure 1 to Figure 3, the utility model discloses a kind of high voltage direct current break-make device, including shell 400 and setting exist Contact chamber 100 in it and electromagnetic conversion room 500 are disposed with the first contact member in the contact chamber 100 like the prior art 200 and second contact member 300, first contact member 200 is identical with 300 shape of the second contact member and includes setting Fixed contact 1 in contact chamber 100 and the exit 2 being arranged outside contact chamber 100.

First contact member 200 and the second contact member 300 are directed into across two apertures in contact chamber 100.First connects It includes conductive material, such as metal to touch 200 and second contact member 300 of component, and is arranged connected to the electricity of electrical load Contact, wherein the electrical load is to be switched, such as motor.

The high voltage direct current break-make device of the utility model is configured to open and close the contact of the first contact member 200 and second Electrical connection between component 300.In this way, the utility model for example can be used to the power supply of switch motor.When its contact is closed, example Such as when voltage is more than 850V, the high current more than 100A can flow between the first contact member 200 and the second contact member 300 It is dynamic.

The shell 400 also sets up electromagnetic conversion room, including coil brace 14 and the coil for being wound on its periphery（It is not regarded in figure Go out）, the coiling of coil brace 14 can be loaded with from external voltage to generate magnetic field in coil brace 14.The coil brace 14 settings are having shield bracket 15 and shielding upper plate 16 to enclose in space made of setting, and the shield bracket 15 and shielding upper plate 16 are logical The connection of clamping form is crossed, and is both made of metal.It is exhausted it to be additionally provided with holder between the coil brace 14 and shield bracket 15 Embolium 17.

Moving armature 18 is movably disposed within inside coil brace 14.Moving armature 18 includes centre bore, and a catch bar 5 passes through The centre bore is guided.The end of catch bar 5 far from contact chamber 100 is rigidly connected on moving armature 18, so that two Person can move or stop simultaneously.The other end of the catch bar 5 passes through the static gag bit 19 and extend into the contact chamber 100 It is interior.The magnet baffle 23 is fixed on by buckle structure 25 on the inner casing 21.

Static gag bit 19 is additionally provided in the coil brace 14, the effect of the static gag bit 19 is to will produce when the coil is energized Magnetic field makes static gag bit 19 magnetize rapidly, generates suction, attracts moving armature 18 to be moved toward the direction of static gag bit 19, completes contact It is attracted step.Certainly, like the prior art, it is additionally provided with resetting spring between shown static gag bit 19 and moving armature 18（In figure not It shows）, after coil blackout static gag bit 19 loses magnetic force, spring can drive moving armature 18 to reset, and then movable contact 4 is made to be touched with fixed 1 separation of point disconnects.

The top of the electromagnetic conversion room is contact chamber 100, and the upper end of the catch bar 5 stretches to the contact chamber 100 It is interior.The contact chamber 100 includes the guiding bottom plate 20 being arranged above the shielding upper plate 16 and the inner casing being provide with above it 21, the bottom plate 20 and inner casing 21 form a closed space, as contact chamber 100 using the form that patches.The bottom plate 20 Arc resistant plastic is all made of with inner casing 21 to be made, such as Du Pont LCP.The inner casing 21 of the contact chamber 100 includes symmetrically arranged two A magnet baffle 23 is fixed with blowout magnet 24 on the magnet baffle 23.

The movable contact 4 for including contact bridge 3 in the contact chamber 100 and being set to contact bridge left and right ends, contact bridge 3 can It is movably arranged in contact chamber 100.Contact bridge 3 includes conductive material, for example, metal.Contact bridge 3 can be that for example plane is vertical The shape of cube.Contact bridge 3 is moveably arranged into contacts structure can contact the first contact member 200 and second simultaneously Part 300 is electrically connected to be generated between the first contact member 200 and the second contact member 300.Contact bridge 3 can also be far from first Contact member 200 and the second contact member 300 move the electricity so that between the first contact member 200 and the second contact member 300 Disconnecting.

The catch bar 5, which moves up and down, can drive the contact bridge 3 to move up and down and then make the movable contact 4 and fixed contact 1 engagement conducting or separation disconnect.Specifically, the top of the catch bar 5 is fixed, there are one limit clamp spring 6, the catch bar 5 With there are many fixed forms of limit clamp spring 6, riveting or screw thread etc..The limit clamp spring 6 formed a Horizontal limiting frame 7 with It limits the contact bridge 3 to move horizontally, an axle spring 8 is additionally provided in the limit clamp spring 6 to limit 3 axis of the contact bridge To movement.

Specifically as shown in figure 4, the limit clamp spring 6 is U-shaped reed, including bottom 61 and two sides 62, the promotion Bar 5 is fixed on the bottom 61, and the Horizontal limiting frame 7 is respectively arranged on described two sides 62.The contact bridge 3 is One tablet, the movable contact 4 set up surface on it separately, and the stage casing of the contact bridge 3 extends there are two boss 9, the boss 9 Width is equal to the width of the Horizontal limiting frame 7.In this way, when the boss 9 is caught in the Horizontal limiting frame 7, then the two Between cannot generate and move horizontally.

One end of the axle spring 8 resists the inner surface of the bottom 61 of the limit clamp spring 6, and the other end resists described connect The lower surface of bridge 3 is touched, the elastic force of the limit clamp spring 6 drives the upper surface of the contact bridge 3 to be close to the limit clamp spring 6 always Side 62 flange, so as to be relatively fixed between the contact bridge 3 and the limit clamp spring 6, such contact bridge 3 and catch bar It is also relatively fixed between 5.

When catch bar 5 drives the limit clamp spring 6, contact bridge 3 to move up and down, muscle 22 that the bottom plate 20 extends internally Also can two sides 62 of the limit clamp spring 6 be carried out with the limit of horizontal direction.

The utility model changes the conventional design of the prior art, and catch bar 5 is only fixed with the limit clamp spring 6, And limit the limit that clamp spring 6 carries out the contact bridge 3 further through Horizontal limiting frame 7 horizontal direction；And bottom plate 20 inwardly prolongs The muscle 22 stretched can also carry out two sides 62 of the limit clamp spring 6 limit of horizontal direction.Ensure to limit under such structure Position clamp spring generates the contact bridge the complete limit of horizontal direction, so that the limit clamp spring and contact bridge level are completely solid It is fixed, it avoids leading to the problem of the contact bridge generated because of spring ageing failure and moves horizontally.

The axle spring 8 being arranged in Horizontal limiting frame 7 limits the axial movement of the contact bridge 3, further works as movable contact 4 When touching fixed contact 1, moreover it is possible to carry out stretch compensation buffering, prevent the two from springing back and generating arcing.Moreover, because contact bridge 3 Lower surface only only have axle spring 8 contact, keep the amount of deflecting of contact bridge 3 bigger than the prior art, even if pre-buried is quiet Contact height is inconsistent also to contact conducting well.

In the utility model, the upper surface that the movable contact 4 is intended for the fixed contact 1 is rectangle, changes conventional set The usual thinking of meter thinks 4 contact area bigger of circular movable contact, hardly realizes, is separated with fixed contact 1 when movable contact 4 is charged When, phenomenon of arc discharge is will produce, and the phenomenon is easy for that the contact surface of contact can be burnt out.When the rectangle using the utility model is dynamic Behind contact 4, even if only can only burn out four apex angles of rectangular contacts still will produce arcing, contact face not will produce It influences, then the service life of contact can increase.Because under the action of highfield, moving contact is opened or closed with static contact electrification When surface can gather a large amount of charge, the density of charge is related with the surface shape of conductor, close in recessed position charge density In zero, small in gentle position charge density, corners bit density is maximum.After charge density reaches a certain amount value, charge production Raw electric field can be very big, so that air breakdown is formed electric discharge phenomena.In order to reach better effect, the movable contact 4 with Fixed contact 1 can use rectangular configuration simultaneously, i.e.,：Make charge concentration at the wedge angle position of rectangle.

In the utility model, microswitch 10 is additionally provided in the contact chamber 100, the microswitch 10 passes through a bracket 11 fix, and the protrusion 12 of 3 upper surface of the contact bridge touches the microswitch 10 by the elastomer block 13 of bracket 11.It is touched when dynamic When point 4 contacts combination with fixed contact 1, microswitch 10 is also touched simultaneously by the elastomer block 13 of bracket 11 and opens and send out letter Number, in this way, the detection function of microswitch makes the safety higher of the high voltage direct current break-make device of the utility model, it is ensured that movable contact 4 contact combination with fixed contact 1, rather than are spaced away from and generate phenomenon of arc discharge.

PCB circuit board 26 is provided in the electromagnetic conversion room 500, the PCB circuit board 26 is vertically placed in the electricity It in magnetic switch room 500, and is fixed on a PCB baffles 27, there are one hook 28, the hooks in the outside of the PCB baffles 27 28 catch in the opening 29 of the shell 400.Circuit exit 30 is offered on the side wall of the shell 400.Such circuit Lateral outlet structure can be welded direct on the control circuit board of PCB, can also online end crimp the ends of various models Son improves its versatility.

It should be appreciated that although this specification is described in terms of embodiments, but not each embodiment only includes one A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say As a whole, the technical solution in each embodiment may also be suitably combined to form those skilled in the art can for bright book With the other embodiment of understanding.

Tool of the series of detailed descriptions listed above only for the feasible embodiment of the utility model Body illustrates that they are all without departing from made by the utility model skill spirit not to limit the scope of protection of the utility model Equivalent implementations or change should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of high voltage direct current break-make device, including shell（400）And the contact chamber to set within it（100）With electromagnetic conversion room （500）, the contact chamber（100）Inside it is disposed with the first contact member（200）With the second contact member（300）, described first connects Touch component（200）With the second contact member（300）Shape is identical and includes being arranged in contact chamber（100）Interior fixed contact（1） With setting in contact chamber（100）Outer exit（2）, the contact chamber（100）Further include inside having contact bridge（3）It is connect with being set to Touch the movable contact of bridge left and right ends（4）, a catch bar（5）The contact bridge can be driven by moving up and down（3）It moves up and down and then makes The movable contact（4）With fixed contact（1）Engagement conducting or separation disconnect, it is characterised in that：The contact chamber（100）For by leading To bottom plate（20）And it is provide with inner casing above it（21）One closed space, the guiding bottom are formed using the form of patching Plate（20）And inner casing（21）It is made of arc resistant plastic, the electromagnetic conversion room（500）For by shield bracket（15）In shielding Plate（16）Metal framework made of setting is enclosed, coil brace is arranged inside（14）And it is wound on the coil of its periphery, moving armature（18） It is movably disposed within coil brace（14）Inside, far from contact chamber（100）Catch bar（5）End be rigidly connected to The moving armature（18）On, the coil brace（14）Inside it is further fixedly arranged on static gag bit（19）, the catch bar（5）One end Across the static gag bit（19）And it extend into the contact chamber（100）It is interior.

2. high voltage direct current break-make device according to claim 1, it is characterised in that：The contact chamber（100）Inner casing（21） Including symmetrically arranged two magnet baffles（23）, the magnet baffle（23）On be fixed with blowout magnet（24）.

3. high voltage direct current break-make device according to claim 2, it is characterised in that：The magnet baffle（23）It is tied by buckling Structure（25）It is fixed on the inner casing（21）On.

4. high voltage direct current break-make device according to any one of claims 1 to 3, it is characterised in that：The catch bar（5）Top It is fixed that there are one limit clamp spring（6）, the limit clamp spring（6）Form a Horizontal limiting frame（7）To limit the contact bridge（3）Water Translation is dynamic, the limit clamp spring（6）Inside it is additionally provided with an axle spring（8）To limit the contact bridge（3）Axial movement, so that The contact bridge（3）With catch bar（5）It is relatively fixed.

5. high voltage direct current break-make device according to claim 4, it is characterised in that：The limit clamp spring（6）For U-shaped reed, Including bottom（61）And two sides（62）, the catch bar（5）It is fixed on the bottom（61）On, described two sides（62） On be respectively arranged with the Horizontal limiting frame（7）；The contact bridge（3）For a tablet, the movable contact（4）Set up table on it separately Face, the contact bridge（3）Stage casing extend there are two boss（9）, the boss（9）Width be equal to the Horizontal limiting frame （7）Width.

6. high voltage direct current break-make device according to claim 5, it is characterised in that：The axle spring（8）One end resist The limit clamp spring（6）Bottom（61）Inner surface, the other end resists the contact bridge（3）Lower surface, the limiting card Spring（6）Elastic force drive the contact bridge（3）Upper surface be close to the limit clamp spring always（6）Side（62）Flange, So that the contact bridge（3）With the limit clamp spring（6）Between be relatively fixed；The guiding bottom plate（20）On be provided with and inwardly prolong The muscle stretched（22）, for the limit clamp spring（6）Two sides（62）Carry out the limit of horizontal direction.

7. high voltage direct current break-make device according to claim 1, it is characterised in that：The movable contact（4）It is described fixed to be intended for Contact（1）Upper surface be rectangle.

8. high voltage direct current break-make device according to claim 1, it is characterised in that：The contact chamber（100）It is inside additionally provided with micro- Dynamic switch（10）, the microswitch（10）Pass through a bracket（11）It is fixed, the contact bridge（3）The protrusion of upper surface（12）It is logical Cross bracket（11）Elastomer block（13）Touch the microswitch（10）.

9. high voltage direct current break-make device according to claim 1, it is characterised in that：The electromagnetic conversion room（500）Interior setting There is PCB circuit board（26）, the PCB circuit board（26）Vertically it is placed in the electromagnetic conversion room（500）It is interior, and it is fixed on one PCB baffles（27）On, the PCB baffles（27）Outside there are one hook（28）, the hook（28）Catch on the shell （400）Opening（29）It is interior.

10. high voltage direct current break-make device according to claim 9, it is characterised in that：The shell（400）Side wall on open up There is circuit exit（30）.