CN209641593U - A kind of contactor for preventing electric arc control unit - Google Patents
A kind of contactor for preventing electric arc control unit Download PDFInfo
- Publication number
- CN209641593U CN209641593U CN201920408605.2U CN201920408605U CN209641593U CN 209641593 U CN209641593 U CN 209641593U CN 201920408605 U CN201920408605 U CN 201920408605U CN 209641593 U CN209641593 U CN 209641593U
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- CN
- China
- Prior art keywords
- contactor
- control unit
- trigger signal
- signal port
- silicon controlled
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- 238000010891 electric arc Methods 0.000 title claims abstract description 23
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 39
- 239000010703 silicon Substances 0.000 claims abstract description 39
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The utility model discloses a kind of contactor for preventing electric arc control units, it belongs to electric switch arc protection technical field, including silicon controlled module, the silicon controlled module includes input terminal, output end, first trigger signal port and the second trigger signal port, the input terminal is connected with power supply, the output end is connected with several contactors, first trigger signal port is connected with control unit, parallel circuit is equipped between second trigger signal port and the auxiliary normally opened contact of the contactor, the first timing module and the first electronic switch are connected in turn between the parallel circuit and second trigger signal port, first electronic switch is connect with the control unit；The function to multiple contactor for preventing electric arcs may be implemented by a silicon controlled module for the utility model, especially for possessing the mechanical equipment of a large amount of contactors, such as drives a vehicle, has effectively saved upgrading cost, meanwhile, also reduce energy consumption.
Description
Technical field
The utility model relates to electric switch arc protection technical fields, and in particular to a kind of contactor for preventing electric arc control is single
Member.
Background technique
Contactor is divided into A.C. contactor and D.C. contactor, it is applied to the fields such as electric power, distribution and electricity consumption.In industry
Control field, contactor are the maximum low-voltage devices of usage amount, are mainly used for the control of motor.Contactor is in closed circuit
When, movable contact can bounce, and generate electric arc；When disconnecting the inductive loads such as motor, very high inverse electromotive force can connect
Stronger electric arc is generated between the dynamic and static contact of tentaculum.The electric arc meeting dynamic and static contact of ablation, if carrying out frequent start and stop to motor
Operation, it is easy to cause contact to be adhered, make motor phase failure, burn out or out of control, equipment and life are posed a serious threat safely.
In order to avoid generating electric arc, it is common practice to silicon controlled module is in parallel with contactor, silicon controlled module triggering
Signal is triggered by control loop, i.e., before the contact of dynamic and static contact, control loop control silicon controlled module trigger voltage mistake in parallel
Zero conducting, reduces rush of current；When switching disjunction, control loop control silicon controlled module prolongs after dynamic and static contact separation
When for a period of time afterwards turn off silicon controlled module trigger signal, complete the process without electric arc disjunction.
In the arc protection system of existing contactor, each contactor is required to one silicon controlled module of setting therewith
Parallel connection for certain mechanical equipments for needing a large amount of contactor to realize complex operations, such as is driven a vehicle, can greatly be increased into
This, energy consumption also can obviously increase, also, be still unavoidable from when silicon controlled module is electrically shocked and wears, motor can always electric mistake
The problem of control.
Utility model content
For the problems of in the prior art, a kind of contactor for preventing electric arc control unit provided by the utility model,
It is reasonable in design, it is low in cost, it is conducive to device upgrade and is transformed, in the frequent shutdown process of motor, effectively avoids connecing
Electric arc is generated when tentaculum on-off circuit, contactor is avoided because of contact adhesion caused by arc erosion, improves the contactor service life,
Production safety is ensured.
To achieve the goals above, the technical solution adopted in the utility model is as follows:
A kind of contactor for preventing electric arc control unit, including silicon controlled module, the silicon controlled module include input terminal, output
End, the first trigger signal port and the second trigger signal port, the input terminal are connected with power supply, if the output end is connected with
Stem grafting tentaculum, first trigger signal port are connected with control unit, second trigger signal port and the contactor
It assists being equipped with parallel circuit between normally opened contact, be connected in turn between the parallel circuit and second trigger signal port
First timing module and the first electronic switch, first electronic switch are connect with the control unit.
As a kind of perferred technical scheme, be parallel with relay between the input terminal and the output end, it is described after
The second electronic switch and the second timing module are connected in turn between electric appliance and first electronic switch.
As a kind of perferred technical scheme, the relay is set as motor relay.
As a kind of perferred technical scheme, the control unit includes signal sending end and signal receiving end, the signal
Transmitting terminal is connected with the signal receiving end signal, the signal receiving end respectively with first trigger signal port and described
The electrical connection of first electronic switch.
As a kind of perferred technical scheme, fastp-acting fuse, main contactor are additionally provided between the input terminal and power supply
And breaker.
The beneficial effects of the utility model are shown:
1, the function to multiple contactor for preventing electric arcs may be implemented by a silicon controlled module in the utility model, especially
It for possessing the mechanical equipment of a large amount of contactors, such as drives a vehicle, has effectively saved upgrading cost, meanwhile, it also reduces
Energy consumption.
2, the function that the utility model utilizes the principle of electrical interlocks and is electrically thoroughly isolated, it is silicon-controlled on major loop
Block coupled in series is before contactor, accordingly even when short trouble or motor will not occur when silicon controlled module is breakdown
Will not always it is electric, avoid motor and burn out or the generation of out-of-control phenomenon, silicon controlled module and contactor is adequately utilized
Advantage, improves electrical control reliability, greatly extends the contactor service life, has ensured production safety, and reduces maintenance
Cost.
3, the utility model realizes being electrically isolated completely to for power supply and motor, and when motor does not work, there is no electric leakages
Stream.
Detailed description of the invention
Fig. 1 is the electric control system figure of the utility model；
Fig. 2 is the electric hookup of the utility model.
In figure: 1- input terminal, 2- silicon controlled module, the first trigger signal of 3- port, 4- control unit, 5- output end, 6-
Two trigger signal ports, the first electronic switch of 7-, the first timing module of 8-, the second timing module of 9-, the second electronic switch of 10-,
11- relay coil, 12- Switching Power Supply, 13- relay main contacts, 14- contactor.
Specific embodiment
In order to facilitate the understanding of those skilled in the art, the utility model will be further described below with reference to the accompanying drawings.
Fig. 1-2 is please referred to, the utility model provides a kind of contactor for preventing electric arc control unit, including silicon controlled module 2,
Silicon controlled module 2 includes input terminal 1, output end 5, the first trigger signal port 3 and the second trigger signal port 6, and input terminal 1 connects
It is connected to power supply, output end 5 is connected with several contactors 14, and the first trigger signal port 3 is connected with control unit 4, and control unit 4 is logical
Crossing the first trigger signal port 3 can control cut-offfing for silicon controlled module 2；Second trigger signal port 6 is auxiliary with contactor 14
It helps and is equipped with parallel circuit between normally opened contact, be connected with the first timing between parallel circuit and the second trigger signal port 6 in turn
Module 8 and the first electronic switch 7, the first electronic switch 7 are connect with control unit 4, and silicon controlled module 2 passes through the second trigger signal end
Mouth 6 can be associated with the auxiliary normally opened contact of several contactors 14, can be triggered silicon controlled module 2 by control unit 4, be made to contact
After contact, control unit 4 controls silicon controlled module 2 and triggers for the dynamic and static contact of device 14, and voltage zero-cross conducting reduces rush of current；
In 14 disjunction of contactor, control unit 4 controls silicon controlled module 2, can with regard to shutdown before the dynamic and static contact separation of contactor 14
2 trigger signal of silicon module is controlled, early cut-off major loop completes the process without electric arc disjunction.
On the basis of the above embodiments, it is parallel with relay between input terminal 1 and output end 5, works as relay main contacts
When 13 closure, the electric current of main circuit is avoided the long-time of silicon controlled module 2 from using, that is, is increased by relay flow direction motor
The service life of silicon controlled module 2, and reduce the loss of electric energy；It is connected in turn between relay and the first electronic switch 7
Second electronic switch 10 and the second timing module 9, the second electronic switch 10 and the second timing module 9 form delay circuit, delay
Circuit can make contactor 14 work long hours, and control more flexible, reduce the use of 2 long-play of silicon controlled module
Electrical loss, and the second timing module 9 can be such that the movement of relay does not excessively frequently prolong its service life.
Preferably, relay may include motor relay, and Switching Power Supply 12 is used to power to electricity consumption device.
Further, control unit 4 includes signal sending end and signal receiving end, signal sending end and signal receiving end signal
Connection, signal receiving end are electrically connected with the first trigger signal port 3 and the first electronic switch 7 respectively, can by signal sending end
To realize the control to silicon controlled module 2 and the first electronic switch 7.Wherein, signal sending end can use sender unit, letter
Number receiving end can use the driving receiver of remote-control sytem of model F23-A++.
On the basis of the above embodiments, input terminal 1 and power supply are directly additionally provided with fastp-acting fuse, main contactor and open circuit
Device is further ensured that the safety of production.
The specific working mode of the utility model is as follows:
Control unit 4 controls the conducting of the first electronic switch 7, and the second timing module 9 receives electric signal and starts timing, not
Before reaching preset delay time (delay time can be set to 2-10 seconds), major loop is controlled by silicon controlled module 2
On-off, prevent from generating electric arc when 14 on-off of contactor；After reaching preset delay time, the second timing module 9
Electric signal is sent to the second electronic switch 10 and is allowed to be connected, and then relay is closed, parallel circuit conducting, silicon controlled module 2
In off state, the connection of major loop is realized by relay；When receiving stop signal, relay and silicon controlled module 2
Voltage out of hand together, meanwhile, storage capacitor continues to send trigger signal to controllable module, in 13 disjunction of relay main contacts
Before, silicon controlled module 2 becomes on state, at this point, by the electric currents of relay coil 11 and relay main contacts 13 it is micro- its
Micro-, relay will not generate electric arc when disconnecting, after the voltage of storage capacitor is down to the minimum trigger voltage of silicon controlled module 2,
Silicon controlled module 2 loses trigger signal, and major loop disconnects, and electric arc will not be generated, simultaneously as silicon controlled module 2 and relay
Disconnection movement it is more rapid compared with contactor 14, i.e., before the disconnection of contactor 14, silicon controlled module 2 and relay are by major loop
It disconnects, at this point, the disconnection process of contactor 14 will not generate electric arc.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (5)
1. a kind of contactor for preventing electric arc control unit, characterized in that including silicon controlled module, the silicon controlled module includes input
End, output end, the first trigger signal port and the second trigger signal port, the input terminal are connected with power supply, the output end
Be connected with several contactors, first trigger signal port is connected with control unit, second trigger signal port with it is described
Between the auxiliary normally opened contact of contactor be equipped with parallel circuit, between the parallel circuit and second trigger signal port according to
Secondary to be connected with the first timing module and the first electronic switch, first electronic switch is connect with the control unit.
2. a kind of contactor for preventing electric arc control unit according to claim 1, characterized in that the input terminal and described defeated
Relay is parallel between outlet, be connected in turn between the relay and first electronic switch the second electronic switch and
Second timing module.
3. a kind of contactor for preventing electric arc control unit according to claim 2, characterized in that the relay is set as motor
Relay.
4. a kind of contactor for preventing electric arc control unit according to claim 1, characterized in that the control unit includes signal
Transmitting terminal and signal receiving end, the signal sending end are connected with the signal receiving end signal, the signal receiving end difference
It is electrically connected with first trigger signal port and first electronic switch.
5. a kind of contactor for preventing electric arc control unit according to claim 1, characterized in that the input terminal and power supply it
Between be additionally provided with fastp-acting fuse, main contactor and breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920408605.2U CN209641593U (en) | 2019-03-28 | 2019-03-28 | A kind of contactor for preventing electric arc control unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920408605.2U CN209641593U (en) | 2019-03-28 | 2019-03-28 | A kind of contactor for preventing electric arc control unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209641593U true CN209641593U (en) | 2019-11-15 |
Family
ID=68496987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920408605.2U Expired - Fee Related CN209641593U (en) | 2019-03-28 | 2019-03-28 | A kind of contactor for preventing electric arc control unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209641593U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113690952A (en) * | 2020-05-15 | 2021-11-23 | 比亚迪股份有限公司 | Voltage transmission control circuit and vehicle |
-
2019
- 2019-03-28 CN CN201920408605.2U patent/CN209641593U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113690952A (en) * | 2020-05-15 | 2021-11-23 | 比亚迪股份有限公司 | Voltage transmission control circuit and vehicle |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |