CN208938891U - A kind of contactor construction with force disconnect amplitude fault current function - Google Patents
A kind of contactor construction with force disconnect amplitude fault current function Download PDFInfo
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- CN208938891U CN208938891U CN201821662249.9U CN201821662249U CN208938891U CN 208938891 U CN208938891 U CN 208938891U CN 201821662249 U CN201821662249 U CN 201821662249U CN 208938891 U CN208938891 U CN 208938891U
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- contact
- arc plate
- moving contact
- cutting
- static contact
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- 238000010276 construction Methods 0.000 title claims abstract description 20
- 230000003068 static effect Effects 0.000 claims abstract description 51
- 238000009413 insulation Methods 0.000 claims abstract description 38
- 238000002955 isolation Methods 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims abstract description 9
- 230000005291 magnetic effect Effects 0.000 claims abstract description 7
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 208000002925 dental caries Diseases 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 238000001727 in vivo Methods 0.000 claims 1
- 230000002427 irreversible effect Effects 0.000 abstract description 3
- 230000001960 triggered effect Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000001914 calming effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
A kind of contactor construction with force disconnect amplitude fault current function, including insulation shell, it is provided with electromagnet, moving contact in the insulation shell, the moving contact location interval is corresponded on the insulation shell and is provided with static contact and its binding post as input terminal and output end；The moving contact can shift up the connection static contact in electromagnet magneticaction；The moving contact can be detached under electromagnet magnetic force or spring effect to bottom offset and the static contact；It is characterized in that being provided with force disconnect device in the moving contact and static contact joint face side, the force disconnect device can be moved to the moving contact and static contact contact surface position under external force disengages the static contact with the moving contact, and realizes physical isolation.Under normal circumstances, the complete function with contactor is triggered by the external world the utility model when needed, can it is mandatory it is irreversible disconnect contact of the moving contact with static contact, realize circuit protection.
Description
Technical field
The invention belongs to power domains, particularly belong to the structure of the contactor of electric power, electric car etc., and alternating current-direct current is suitable
With.
Background technique
The contactor construction applied to the protection of electric vehicle high-voltage great-current is generally divided into single-break contactor and double at present
(more) breakpoint contactor construction, electrical current is usually no more than 400A, disjunction electricity when automobile-used contactor common at present is specified long
Stream is usually no more than 3000A.Contactor is the control switch element with isolation features, utilizes electromagnet and armature (dynamic iron core)
Between the suction that generates control the control device of major loop switch state, the isolation control of low current low-voltage circuit may be implemented
High current high voltage circuit processed.Existing double break point-contactor typical structure is referring to Fig. 1, input terminal contact and binding post 001 and defeated
Outlet contact and binding post 002 and insulation upper housing 003 form overcap combination.Moving contact and conductive plate 004 and dynamic iron core 005
It forms a whole, is fitted into electromagnet cavity 006, the setting of electromagnet cavity is in insulation lower case 007.Its operating principle:
When actuation, dynamic iron core moves upwards under electromagnet effect with moving contact assembly, by two on moving contact and overcap combination
A contact engagement, the conducting of input and output terminal circuit.When disconnection, dynamic iron core is transported downwards under electromagnet effect with moving contact assembly
It is dynamic, moving contact is separated with two contacts on overcap combination.
Existing single-break contactor typical structure is as follows, referring to Fig. 2, is placed with electricity in the chamber in insulation shell 103
Magnet 104 is provided with magnetic yoke and input terminal binding post 101 in the periphery of electromagnet, and input terminal binding post is fixed on insulation shell
On.Setting output end contact and binding post 102 spaced apart, reset spring on the insulation shell of the electromagnet other side
105 are fixed on magnetic yoke lower end, fixed armature 106 on reset spring, are fixedly installed moving contact 107 in one end of armature 106,
Moving contact 107 is located at the lower section of output end contact and binding post.After work is powered, under electromagnet effect, armature is moved upwards
It is attracted to below electromagnet, while moving contact being driven to move upwards contact output end contact and binding post, make input terminal contact
It is connected to output end contact；After power loss, under action of reset spring, moving contact, which moves down, is detached from output end contact, makes to input
Contact and output end contact is held to disconnect.
Current above-mentioned contactor, which has the disadvantage that, is difficult the biggish electric current of disjunction, is more than rated current in fault current
When more than several times can not disjunction, cause contact sintering can not disconnecting circuit, may cause contactor and circuit other component and occur
Blast accident or other safety accidents；Band carried break and was greater than 10ms in 10ms or so actuation time, due to break compared with
Long, many fault currents can still damage junior's device or contactor itself；When it is disconnected due to vibration, electromagnetism
There is abnormal a possibility that being attracted in the reasons such as interference, therefore can not use contactor as the safety device of reliable disconnecting circuit.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of contactor constructions, except contactor traditional function, tool
Having can be with the function of independent mandatory cutting circuit loop.And under force disconnect function, have disjunction than under contactor function
The ability of more high current, speed is also faster compared with contactor function movement speed.
In order to solve the above technical problems, technical solution provided by the invention is a kind of band force disconnect amplitude fault current
The contactor construction of function, including insulation shell are provided with electromagnet, moving contact in the insulation shell, in the insulation
The moving contact location interval is corresponded on shell is provided with static contact and its binding post as input terminal and output end；It is described dynamic
Contact can shift up the connection static contact in electromagnet magneticaction；The moving contact is acted in electromagnet magnetic force or spring
Under can be detached to bottom offset and the static contact；It is characterized in that being arranged in the moving contact and static contact contact surface side
There is force disconnect device, the force disconnect device can be moved to the moving contact under external force and contact with the static contact
Face position makes the static contact and the moving contact disengage realization physical isolation.
The force disconnect device includes the moving contact and static contact contact surface side is arranged in movable
Arc plate is cut in insulation, and the acting device that the displacement of arc plate is cut described in driving, the acting dress are provided in the side for cutting arc plate
The trigger device set and the external circuit connection for sending control signal；The acting device can drive the arc plate of cutting to force to connect
The moving contact of touching connection separates with the static contact and makes to disengage.
The acting device can be gas, fluid or solid generating device, by the electric signal for receiving outer control loop
Triggering, provide driving force push described in cut the cutting end of arc plate and move to final position from initial position, by the moving contact with
The static contact isolation is on it in two isolation cavitys of lower surface；The cutting end initial position and stop bit for cutting arc plate
Set the two sides for being located at the moving contact Yu the static contact.
The acting device is gas generator.
The guiding mechanism that the movement of arc plate is cut described in supplying is provided on the insulation shell.
The cutting end for cutting arc plate is bevel structure.
The groove at the cutting end of arc plate is cut described in the accommodating opened up on the shell of the insulation shell, the groove is institute
State the final position for cutting the cutting end of arc plate.
The limit that arc Board position is cut described in limitation is provided at the initial position and final position for cutting the displacement of arc plate
Position mechanism.
The position-limit mechanism include be arranged in it is described cut in arc plate surface and it is prominent described in cut the telescopic of arc plate surface
Hoodle, when the cutting end for cutting arc plate is in the initial position and final position, the corresponding guiding of the hoodle
The groove for the hoodle nesting is provided at the inner wall position of mechanism.
The channel guiding mechanism is channel, described to cut the setting of arc plate in the channel；Described in the channel and setting
The channel of gas generator is connected to.
The moving contact can at least one fuse with arc-suppression function in parallel with static contact contact surface side.
The force disconnect function of contactor of the invention generates thrust gas movement by chemical energy, and actuation time can reach
To within 2ms, physical isolation breaking arc is improved compared with relay air exclusion breaking arc ability, can be with disjunction 3000A or more
Fault current.Physical isolation have stopping mechanism, can reliable disconnecting circuit, make product have safety member characteristic.Normally
Contactor use is done when use, special circumstances force disconnect is irrecoverable.Force disconnect control loop and contactor major loop, control
Circuit processed is mutually isolated, respective independent control.Contactor of the invention increases the additional force disconnect circuit loop of contactor
Function；Using insulating barrier physical isolation, force disconnect function can open bigger electric current with disjunction；It is acted using chemical energy,
Faster, actuation time is no more than several ms (being usually no more than 2ms) to movement speed when force disconnect；Force disconnect function provides object
Reason isolation, keeps major loop reliably to disconnect, and can be used as safety member use；Increase the scope of application of contactor product；By force
Cutting function processed is controlled by independent loop, with contactor control loop parallel control.
As protection device in use, force disconnect circuit can be used cooperatively with current transformer, when monitoring relay
Can not disjunction fault current when, force disconnect function action, circuit disconnect, protect junior's circuit.
As safety device in use, force disconnect circuit can link with crash sensor, insulating monitoring sensor etc., when
Circuit is cut off with the shorter time when needing to disconnect.
As control device in use, contactor function controlled actuation, carries out circuit and cut-off, (such as vehicle loses if necessary
Surreptitiously equal needs remotely irreversible disconnection when) force disconnect circuit can also act, cut off circuit.
Detailed description of the invention
Fig. 1, existing both-end point-contactor schematic cross-sectional view.
Fig. 2, existing single-tap head contactor schematic cross-sectional view.
Fig. 3, double contact device side view vertical profile structural schematic diagrams of the invention.
Fig. 4, double contact devices of the invention are cut and face vertical profile structural schematic diagram when arc plate is located at initial position.
Fig. 5, double contact devices of the invention are cut and face vertical profile structural schematic diagram when arc plate is located at final position.
Fig. 6, single-tap head contactor of the invention are cut and face vertical profile structural schematic diagram when arc plate is located at initial position.
Fig. 7, single-tap head contactor of the invention are cut and face vertical profile structural schematic diagram when arc plate is located at final position.
Specific embodiment
Scheme in view of the above technology is now lifted preferred embodiment and is specifically described in conjunction with diagram.
By taking double contact devices as an example, referring to Fig. 3 to Fig. 5, insulation shell includes insulation upper housing 203 and insulation lower case
205, insulation upper housing buckle closure is in insulation lower case.Cavity there are two being spaced apart and set in insulation lower case, one of cavity
It is inside provided with electromagnet 206, offers cavity in electromagnet 206, being provided with can be in the dynamic iron of upper and lower displacement under magneticaction
The heart is fixedly connected with moving contact 204 in dynamic iron core upper end, two moving contacts to raise upward is arranged at intervals on moving contact.
It insulate on upper housing above moving contact, is correspondingly arranged on respectively at the position of moving contact as input terminal on corresponding moving contact
Static contact and binding post 201 and static contact and binding post 202 as output end.Dynamic iron core drives under electromagnet magneticaction
Moving contact is shifted up to be contacted with two static contacts, and being connected to input terminal and output end makes circuit communication, and moving contact is ferromagnetic in electromagnetism
It can be detached to bottom offset and static contact under power or spring effect.Gas is provided at the port that another cavity is located at insulation lower case
Body generator 208 is as acting device, and gas generator is by receiving external drive signalizing activity.The control of gas generator is returned
The electric signal for the current/voltage overload that road provides driving for gas generator is used to trigger the trigger device of gas generator,
The movement of arc plate is cut to generate a large amount of drive of high-pressure gas.The control loop of contactor and the control loop of gas generator are phase
Mutually it is individually present.Gas generator is fixed on insulation shell by pressing plate.In the exhausted of moving contact and static contact contact surface side
Channel is offered on edge upper housing, which is connected to gas generator, the chamber where the other end and moving contact.
Insulation is provided in the channel cuts arc plate 207, cuts the shape of the longitudinal cross-section of arc plate and the longitudinal cross-section shape phase in channel
With or be similar to it is identical, under external force can be in channel along its displacement, and to greatest extent its object is to guarantee to cut arc plate
Reduction cut the gap between arc plate and channel.The width and length for cutting arc plate, which meet, is moved to static contact and dynamic touching cutting arc plate
When at head contact surface, the contact between moving contact and static contact can be obstructed completely, and it is independent mutually to be isolated in two sides
Chamber.The cutting end for cutting arc plate is bevel structure, and when cutting off, the inclined-plane impact end for cutting arc plate is easier to cut moving contact
Between the contact surface contacted with static contact.In addition, cut off for convenience, the shape of moving contact and static contact be trapezoidal, taper type or
Other are arc or the shape and structure of inclined plane shape with edge, in this way, after moving contact is contacted with static contact, in its contact surface
Two sides will form approximate horn-like opening, conveniently cut the incision of arc plate.In the other side of moving contact and static contact contact surface
Insulation upper housing on open up it is fluted, when cut arc plate cutting moving contact and static contact contact after, the cutting end for cutting arc plate is imbedded
In the groove, positioned to arc plate is cut.
It is provided in the channel to the position-limit mechanism cutting arc plate initial position or final position and being limited.Position-limit mechanism can
To be many form structures, for example, the interval several small boss of setting make in small boss following settings spring below channel
It can be retracted under the external force pressure of small boss in the insulation shell below channel, keep channel unimpeded, when losing external force, in elastic force
It will pop up under effect, formed and hindered.Settable small boss is being cut at the final position after arc plate initial position, displacement to cutting arc
Plate carries out position restriction.Due to cut arc plate cutting end be inclined-plane, the inclined-plane downward, therefore, cut arc plate displacement when, the inclined-plane
Small boss can be oppressed inwardly to retract, keep channel unimpeded.The telescopic convex ball of arc plate surface setting is being cut alternatively, it is also possible to use,
The telescopic of convex ball can be realized by spring or elastic material.Convex ball is corresponded in the initial position and final position for cutting arc plate
Position at open up the groove to match with convex ball shape, when cutting arc plate and being displaced under external force, convex ball is squeezed, to
It cuts in arc plate and retracts, be detached from groove, be moved to final position when cutting arc plate, when convex ball is in groove, convex ball stretches out again to be embedded in
Limit is realized in groove.
Guarantee that cutting the sectional area in channel and shape between arc plate and gas generator can guarantee gas to cut the movement of arc plate
Flow smooth, pressure it is sufficient to Dutch arc postlaminar part, the high pressure gas for enabling gas generator to generate, which pushes, cuts the displacement of arc plate.
In order to reduce the volume of contactor construction, the direction for placing gas generator is consistent with the moving contact direction of motion.
The force disconnect apparatus structure principle of single-tap head contactor with it is double-contact similar, difference is, double contacts
Device has two groups of contacts, and for moving contact always relative to static contact parallel motion, when opening generates two groups of breakpoints simultaneously.Single contact
Device only has one group of contact, and moving contact prolongs fulcrum flip-flop movement relative to static contact, and when opening generates one group of breakpoint.Referring to Fig. 6 and
Fig. 7, single-tap head contactor construction include insulation shell 303, and the chamber that accommodate electromagnet 304 is offered on insulation shell,
The periphery of electromagnet and top are provided with magnetic yoke and input single binding post 301.Reset spring is provided with below magnetic yoke
305, armature 306 is connected on reset spring, armature 306 is located at the lower end of electromagnet, is connected in the extended spot of armature dynamic
Contact 307 is provided with static contact and output end binding post 302 on the insulation shell above moving contact.In moving contact and stationary contact
Channel is offered on the insulation shell of the side of head contact surface, at insulation shell shell wall, which places gas
Arc plate 310 is cut in body generator 309, other end placement.Gas generator 309 is fixed on insulation crust by pressing plate 308.
Insulation is provided in channel cuts arc plate 310, cuts outside the shape of the longitudinal cross-section of arc plate and the longitudinal cross-section in channel
Shape it is identical or be similar to it is identical, under external force can be and maximum in channel along its displacement its object is to guarantee to cut arc plate
The gap between arc plate and channel is cut in the reduction of limit.Cut arc plate width and length meet cut arc plate be moved to static contact with
When at moving contact contact surface, the contact between moving contact and static contact can be obstructed completely, and it is only mutually to be isolated in two sides
Vertical chamber.The cutting end for cutting arc plate is bevel structure, and when cutting off, the inclined-plane impact end for cutting arc plate is easier to cut dynamic
Between the contact surface that contact is contacted with static contact.In addition, cutting off for convenience, the shape of moving contact and static contact is trapezoidal, frustum
Shape or other be the shape and structure of arc or inclined plane shape with edge, in this way, after moving contact is contacted with static contact, connect at it
The two sides of contacting surface will form approximate horn-like opening, conveniently cut the incision of arc plate.It is provided in the channel initial to arc plate is cut
The position-limit mechanism that position or final position are limited.The position-limit mechanism is the same as similar in double contact device schemes.In order to cut
The movement of arc plate guarantees that cutting the sectional area in channel and shape between arc plate and gas generator can guarantee that airflow smooth, pressure fill
Foot arrives Dutch arc postlaminar part, and the high pressure gas for enabling gas generator to generate, which pushes, cuts the displacement of arc plate.In order to reduce contact
The volume of device structure, the direction for placing gas generator are consistent with the moving contact direction of motion.When being cut off, the height of arc plate is cut
It is displaced to final position from initial position under body of calming the anger effect, moving contact and static contact are isolated in its two sides independent chamber mutually
Room.
When cutting contact of the arc plate cutting moving contact with static contact, electric arc may be generated, it, can be in stationary contact for arc extinguishing
First side one or more fuses with arc-suppression function in parallel, for example it is filled with the fuse of arc-extinguishing medium.
The contactor with cutting structure of the invention also has force disconnect in addition to the basic function with contactor
Function.Under normal circumstances, it uses as contactor, when needed, is triggered by the external world, it can the mandatory irreversible dynamic touching of disconnection
Contact of the head with static contact, realizes circuit protection.
Claims (11)
1. a kind of contactor construction with force disconnect amplitude fault current function, including insulation shell, in the insulation shell
It is provided with electromagnet, moving contact in vivo, the moving contact location interval is corresponded on the insulation shell and is provided with as input
The static contact and its binding post at end and output end；The moving contact can shift up the connection stationary contact in electromagnet magneticaction
Head；The moving contact can be detached under electromagnet magnetic force or spring effect to bottom offset and the static contact；It is characterized in that
The moving contact and static contact contact surface side are provided with force disconnect device, and the force disconnect device can be in outer masterpiece
Moving to the moving contact and static contact contact surface position with bottom makes the static contact and the moving contact disengage reality
Existing physical isolation.
2. contactor construction according to claim 1, it is characterised in that the force disconnect device includes being arranged described
Arc plate is cut in the movable insulation of moving contact and static contact contact surface side, and the side for cutting arc plate is provided with drive
The dynamic acting device for cutting the displacement of arc plate, the trigger device of the acting device and the external circuit for sending control signal connect
It connects；The acting device can drive the arc plate of cutting to force that the moving contact of contact connectio is separated and made with the static contact
It disengages.
3. contactor construction according to claim 2, it is characterised in that the acting device can be gas, fluid or solid
Generating device, the electric signal by receiving outer control loop trigger, provide driving force push described in cut the cutting end of arc plate from
Initial position moves to final position, and the moving contact and the static contact are completely cut off to two isolation cavitys of lower surface on it
It is interior；The cutting end initial position for cutting arc plate and final position are located at the two sides of the moving contact Yu the static contact.
4. contactor construction according to claim 3, it is characterised in that be provided with described in confession and cut on the insulation shell
The guiding mechanism of arc plate movement.
5. contactor construction according to claim 4, it is characterised in that the acting device is gas generator.
6. contactor construction according to claim 2, it is characterised in that the cutting end for cutting arc plate is bevel structure.
7. contactor construction according to claim 3, it is characterised in that the appearance opened up on the shell of the insulation shell
The groove at the cutting end for cutting arc plate is set, the groove is the final position at the cutting end for cutting arc plate.
8. contactor construction according to claim 4, it is characterised in that at the initial position for cutting the displacement of arc plate and end
The stop bit place of setting is provided with the position-limit mechanism that arc Board position is cut described in limitation.
9. contactor construction according to claim 8, it is characterised in that the position-limit mechanism includes being arranged to cut arc described
The telescopic hoodle that arc plate surface is cut in plate surface and described in protrusion, is in the initial bit at the cutting end for cutting arc plate
It sets and when final position, is provided at the inner wall position of the corresponding guiding mechanism of the hoodle for nested recessed of the hoodle
Slot.
10. contactor construction according to claim 5, it is characterised in that the guiding mechanism is channel, described to cut arc plate
Setting is in the channel；The channel is connected to the channel that the gas generator is arranged.
11. contactor construction according to claim 1, it is characterised in that the moving contact and the static contact contact surface one
It side can at least one fuse with arc-suppression function in parallel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821280474 | 2018-08-09 | ||
| CN2018212804746 | 2018-08-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208938891U true CN208938891U (en) | 2019-06-04 |
Family
ID=66724495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821662249.9U Withdrawn - After Issue CN208938891U (en) | 2018-08-09 | 2018-10-15 | A kind of contactor construction with force disconnect amplitude fault current function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208938891U (en) |
-
2018
- 2018-10-15 CN CN201821662249.9U patent/CN208938891U/en not_active Withdrawn - After Issue
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 710075 Zhongrong Electric Industrial Base, No. 97, Jinye Second Road, High tech Zone, Xi'an, Shaanxi Patentee after: XI'AN ZHONGRONG ELECTRIC Co.,Ltd. Address before: Room 3-10303, East District, modern enterprise center, No.12, zone a, pioneer R & D Park, 69 Jinye Road, high tech Zone, Xi'an City, Shaanxi Province, 710077 Patentee before: XI'AN ZHONGRONG ELECTRIC Co.,Ltd. |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190604 Effective date of abandoning: 20240102 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190604 Effective date of abandoning: 20240102 |