CN104599901B - Detection circuit used for contactor - Google Patents
Detection circuit used for contactor Download PDFInfo
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- CN104599901B CN104599901B CN201510057087.0A CN201510057087A CN104599901B CN 104599901 B CN104599901 B CN 104599901B CN 201510057087 A CN201510057087 A CN 201510057087A CN 104599901 B CN104599901 B CN 104599901B
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Abstract
The invention discloses a detection circuit used for a contactor. The detection circuit comprises the contact, a switch and a controller, wherein the contactor is used for generating an output signal according to a control signal, the switch is connected to the contactor and used for converting the output signal of the contactor into a switch signal, and the controller is connected between the contactor and the switch and is used for outputting a control signal to the contactor, receiving a the switch signal which is fed back, and detecting whether adhesion happens to the contactor or not according to the output control signal and the received switch signal. By means of the detection circuit, the problem that in the prior art, whether adhesion happens to the contactor or not can not be accurately determined is solved, and loads are effectively protected.
Description
Technical field
The present invention relates to circuit field, in particular to a kind of detection circuit for contactor.
Background technology
Electric current is excessive in circuit or contactor itself is damaged etc. can all cause contactor adhesion, and contactor adhesion then can
Directly result in the important loads such as motor, compressor in circuit to damage.
In the related, in order to mitigate the economic loss that contactor adhesive band comes, in circuit design, typically using band
Have a contactor of auxiliary contact, and by detect contactor auxiliary contact and other normal contacts determining that contactor is
It is no adhesion occur.Due to only, in other normal contact whole actions, auxiliary contact just can determine whether action, and normal at other
When there was only partial act in contact, auxiliary contact action situation does not know.Therefore, above-mentioned technical proposal cannot be accurately determined and connect
Tentaculum whether adhesion, and then the important load in circuit cannot be avoided to be damaged..
For example, for the contactor being arranged in main circuit, it is assumed that the contactor has 3 pairs of normal contacts, respectively：1’
With 2 ', 3 ' and 4 ', 5 ' and 6 ', they are separately positioned in different phase lines, and a pair of auxiliary contact 7 ' and 8 ', are being implemented
When, if the adhesive of contact 1 ' and 2 ' and 3 ' and 4 ', and contact 5 ' and 6 ' disconnects, then the state of auxiliary contact 7 ' and 8 ' does not know,
Therefore, it is impossible to accurately determine contactor whether adhesion.
For the contactor whether problem of adhesion cannot be accurately determined in correlation technique, effectively solution is not yet proposed at present
Certainly scheme.
The content of the invention
Present invention is primarily targeted at provide a kind of detection circuit for contactor, to solve correlation technique in cannot
Accurately determine contactor whether adhesion problems.
To achieve these goals, according to an aspect of the invention, there is provided a kind of detection circuit for contactor.
The circuit includes：Contactor, for generating output signal according to control signal；Switch, be connected to above-mentioned contactor, for by
The above-mentioned output signal for stating contactor is converted to switching signal；And controller, be connected to above-mentioned contactor and above-mentioned switch it
Between, for exporting above-mentioned control signal to above-mentioned contactor, and the switching signal of above-mentioned switch feedback is received, and according to output
Control signal and the switching signal that receives detect the whether adhesion of above-mentioned contactor.
Further, in the following manner according to the above-mentioned contactor of the switching signal detection of control signal and reception of output
Whether adhesion：Judge whether above-mentioned control signal is contactor open circuit control signal；If it is judged that above-mentioned control signal is upper
Contactor open circuit control signal is stated, then judges whether above-mentioned switching signal is high level signal；If it is judged that above-mentioned switch letter
Number be above-mentioned high level signal, it is determined that above-mentioned contactor adhesion；And/or if it is judged that above-mentioned switching signal is low level letter
Number, it is determined that above-mentioned contactor is normal.
Further, above-mentioned switch includes：Relay.
Further, above-mentioned relay is auxiliary reclay, and above-mentioned auxiliary reclay includes：First auxiliary reclay, even
It is connected between the first phase line output terminal of above-mentioned contactor and controller noted above；And second auxiliary reclay, it is connected to above-mentioned
Between second phase line output terminal of contactor and controller noted above, wherein, above-mentioned first phase line output terminal is different from above-mentioned second
Phase line output terminal, and above-mentioned first phase line output terminal and above-mentioned second phase line output terminal are the arbitrary phase line in three-phase output end
Output end.
Further, above-mentioned first auxiliary reclay includes：First coil end and the first contact end, above-mentioned first coil end
The first phase line output terminal of above-mentioned contactor is connected to, above-mentioned first contact end is connected to controller noted above, in the middle of above-mentioned second
Relay includes：Second coil-end and the second contact end, the second phase line that above-mentioned second coil-end is connected to above-mentioned contactor is defeated
Go out end, above-mentioned second contact end is connected to controller noted above, wherein, above-mentioned first contact end and above-mentioned second contact end are in parallel.
Further, above-mentioned first auxiliary reclay includes：First coil end and the first contact end, above-mentioned first coil end
The first phase line output terminal of above-mentioned contactor is connected to, the two ends of above-mentioned first contact end are respectively connecting to the of controller noted above
Single port and second port, above-mentioned second auxiliary reclay includes：Second coil-end and the second contact end, above-mentioned second coil-end
The second phase line output terminal of above-mentioned contactor is connected to, the two ends of above-mentioned second contact end are respectively connecting to controller noted above the 3rd
Port and the 4th port, wherein, above-mentioned first port, above-mentioned second port, above-mentioned 3rd port and above-mentioned 4th port be not for
Same director port.
Further, above-mentioned auxiliary reclay also includes：3rd auxiliary reclay, is connected to the third phase of above-mentioned contactor
Between line output terminal and controller noted above, wherein, above-mentioned third phase line output terminal is not different from above-mentioned first phase line output terminal, and not
It is same as above-mentioned second phase line output terminal.
Further, the detection circuit for contactor also includes：Circuit protection part, is connected to controller noted above, uses
When in above-mentioned contactor adhesion, the load in main circuit is protected, above-mentioned load is connected to above-mentioned contactor, by above-mentioned contactor
Control.
Further, foregoing circuit guard block includes：Breaker, be connected to above-mentioned contactor and controller noted above it
Between, with shunted exciter tripping part, wherein, in above-mentioned contactor adhesion, controller noted above generation shunted exciter tripping signal, above-mentioned point
Trip signal is encouraged for controlling above-mentioned circuit breaker tripping so that above-mentioned contactor is forced open circuit.
Further, foregoing circuit guard block also includes：Alarm, is connected to controller noted above, wherein, connect above-mentioned
During tentaculum adhesion, controller noted above controls above-mentioned alarm and generates alarm signal.
By the present invention, using contactor, for generating output signal according to control signal；Switch, is connected to contactor,
For the output signal of contactor to be converted to into switching signal；And controller, be connected to contactor and switch between, for
Contactor output control signal, and the switching signal of switch feedback is received, and the control signal according to output and opening for receiving
OFF signal detection contactor whether adhesion, solves the problems, such as cannot to be accurately determined in correlation technique contactor whether adhesion,
And then reached and judge accurately and in time contactor whether adhesion effect.
Description of the drawings
The accompanying drawing for constituting the part of the application is used for providing a further understanding of the present invention, the schematic reality of the present invention
Apply example and its illustrate, for explaining the present invention, not constituting inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the circuit structure diagram of the detection circuit for contactor according to embodiments of the present invention；And
Fig. 2 is the circuit structure diagram of the detection circuit for being preferably used in contactor according to embodiments of the present invention.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Below with reference to the accompanying drawings and in conjunction with the embodiments describing the present invention in detail.
In order that those skilled in the art more fully understand application scheme, below in conjunction with the embodiment of the present application
Accompanying drawing, is clearly and completely described to the technical scheme in the embodiment of the present application, it is clear that described embodiment is only
The embodiment of the application part, rather than the embodiment of whole.Based on the embodiment in the application, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, should all belong to the model of the application protection
Enclose.
It should be noted that the description and claims of this application and the term " first " in above-mentioned accompanying drawing, "
Two " it is etc. the object for distinguishing similar, without for describing specific order or precedence.It should be appreciated that so using
Data can exchange in the appropriate case, so as to embodiments herein described herein.Additionally, term " including " and " tool
Have " and their any deformation, it is intended that covering is non-exclusive to be included, and for example, contains a series of process, the side of units
Method, system, product or equipment are not necessarily limited to those steps clearly listed or unit, but may include clearly not list
Or other steps intrinsic for these processes, method, product or equipment or unit.
A kind of embodiments in accordance with the present invention, there is provided detection circuit for contactor.
Fig. 1 is the circuit structure diagram of the detection circuit for contactor according to embodiments of the present invention.As shown in figure 1, should
Circuit includes：Contactor 10, switch 20 and controller 30.
Contactor 10 is used to generate output signal according to control signal.For example, under normal circumstances, when being input into contactor 10
During for the control signal for controlling its connection, the coil electricity in contactor 10, its contact is changed into attracting state from off-state,
Now, contactor 10 is changed into on-state from off-state, and exports electric signal so that the load normal work in main circuit；
When being input into for the control signal for controlling its disconnection to contactor 10, the coil losing electricity in contactor 10, its contact is by adhesive
State goes off state, and now, contactor 10 goes off state by on-state, and no longer exports electric signal so that main
Load in circuit quits work.And in abnormal cases, for example, electric current in main circuit is excessive or 10, contactor is die
Barrier etc., can cause contactor 10 normally to be disconnected according to control signal, that is, contactor 10 is due to cannot normally disconnect
Existing adhesion phenomenon, now, although warp-wise contactor 10 have input the control signal for controlling its disconnection, but due to main electricity
Electric current in road is excessive or contactor 10 failure and other reasons itself, and the contact of contactor 10 is still in attracting state, so as to
Contactor 10 is still in on-state, and then causes the load having been switched off in main circuit due to burning in dry-fire condition
It is bad.It should be noted that contactor 10 is A.C. contactor.
Switch 20 is connected to contactor 10, for the output signal of contactor 10 to be converted to into switching signal.For example, switch
20 be normal open switch when, if contactor 10 output output signal be low level signal, i.e. contactor 10 disconnect when, then open
The switching signal for closing 20 outputs is also low level signal；If the output signal of the output of contactor 10 is high level signal, i.e. connect
When tentaculum 10 is connected, then the switching signal of the output of switch 20 is high level signal.It should be noted that switch 20 can directly by
Switching signal is fed back in controller 30, and so, controller 30 can be according to the shape for control contactor 10 of itself output
The control signal of state and the switching signal of the feedback of switch 20 judge whether contactor 10 adhesion state occurs.
During enforcement, controller 30 is connected between contactor 10 and switch 20, for the output control signal of contactor 10,
And the switching signal that switch 20 feeds back is received, and according to the control signal for exporting and the switching signal of reception detection contactor 10
Whether adhesion.Wherein, controller 30 is when the whether adhesion of contactor 10 is detected, it can be determined that the switching signal for receiving whether with
The control result of the control signal of itself output is consistent, if unanimously, shows that contactor 10 is normal, adhesion does not occur；Such as
It is really inconsistent, then show that contactor 10 is abnormal, may there is adhesion.It should be noted that controller 30 can be arranged on
On the master control borad of whole machine.
It is and direct because switching signal can be linked with the output signal of contactor by the embodiment of the present invention
Each contacts status of contactor of the detection with auxiliary contact are compared, and whether reached can determine contactor accurately and in time
Adhesion.
Preferably, in embodiments of the present invention, can in the following manner according to the control signal of output and opening for receiving
OFF signal detection contactor whether adhesion：
S2, judges whether control signal is contactor open circuit control signal, that is, judging whether control signal is for controlling
The signal of contactor open circuit processed.
S4, if it is judged that control signal is contactor open circuit control signal, then determines whether that whether switching signal is
High level signal.Because under normal circumstances, contactor can be breaking under the control of contactor open circuit control signal, now, contact
The output end of device exports low level voltage signal due to ground connection.If however, contactor adhesion, even if connecing to contactor output
Tentaculum open circuit control signal, contactor also will not be breaking, causes output high level voltage signal, therefore, by determining whether
Whether switching signal is that high level voltage signal can determine contactor whether adhesion.
S6, if it is judged that switching signal is high level voltage signal, it is determined that contactor adhesion.And/or, S8, if
Judge that switching signal is low level voltage signal, it is determined that contactor is normal.
It should be noted that in embodiments of the present invention, it is that the present invention is elaborated as a example by switching as normal open switch.
By the embodiment of the present invention, want control contactor and disconnect and actually connect because contactor adhesion is typically occurred in
When tentaculum cannot normally disconnect, therefore, on the premise of formerly judging whether control signal is contactor open circuit control signal, then sentence
Disconnect whether OFF signal is high level voltage signal, the degree of accuracy of detection efficiency and testing result can be improved.
It should be noted that in embodiments of the present invention, above-mentioned switch 20 can be contactor or relay.Due to
Contactor is compared, and the cost of relay is lower, it is therefore preferred that in embodiments of the present invention, can be from relay as this
The switch 20 at place.Wherein, the type of relay include it is various, for example, it can include：Auxiliary reclay.
Elaborate the present invention as a example by switching 20 as auxiliary reclay below.
Wherein, when implementing, auxiliary reclay can include 2 or 3.When it includes 2, this 2 centres after
The input of electrical equipment can be respectively connecting to the output end of any two-phase of contactor, when it includes 3, this 3 centres after
The input of electrical equipment can be respectively connecting to the output end of the three-phase of contactor.
When auxiliary reclay includes 2, as shown in Fig. 2 auxiliary reclay can include：First auxiliary reclay 202
With the second auxiliary reclay 204.First auxiliary reclay 202 is connected to the first phase line output terminal and controller 30 of contactor 10
Between；And second auxiliary reclay 204 be connected between the second phase line output terminal of contactor 10 and controller 30, wherein,
First phase line output terminal is different from the second phase line output terminal, that is, the first phase line output terminal and the second phase line output terminal are two
Different phase line output terminals, and arbitrary phase line that the first phase line output terminal and the second phase line output terminal are in three-phase output end is defeated
Go out end.
For example, it is assumed that the first auxiliary reclay 202 is connected between the A phase output terminals of contactor 10 and controller 30；The
Two auxiliary reclays 204 are connected between the B phase output terminals of contactor 10 and controller 30, so, if the A phases of contactor 10
Contact adhesion, then the coil of the first auxiliary reclay 202 obtain electric, so as to its contact is changed into attracting state；In the same manner, if contact
The B phase contact adhesions of device 10, then the coil of the second auxiliary reclay 204 obtain electric, so as to its contact is changed into attracting state；If
A, B phase contact adhesion of contactor 10, then the coil of the first auxiliary reclay 202 and the second auxiliary reclay 204 it is electric, from
And its is each changed into attracting state in contact.
It is further preferred that in embodiments of the present invention, as shown in Fig. 2 the first auxiliary reclay 202 can include：The
One coil-end 2022 and the first contact end 2024, first coil end 2022 is connected to the first phase line output terminal of contactor 10, the
One contact end 2024 is connected to controller 30, and the second auxiliary reclay 204 can include：Second coil-end 2042 and the second contact
End 2044, the second coil-end 2042 is connected to the second phase line output terminal of contactor 10, and the second contact end 2044 is connected to control
Device 30, wherein, the first contact end 2024 and the second contact end 2044 are in parallel.
So, as long as the switching signal of any one auxiliary reclay is closure switch signal, then controller 30 all can be examined
Switching signal is measured, and then can determine that contactor 10 sticks together.And if all of the switching signal of auxiliary reclay
To disconnect switching signal, then controller 30 is all without detecting switching signal, and then can determine that contactor 10 does not stick together.
After contactor 10 sticks together, system can produce alarm signal, or can cut off the power supply in main circuit, for example,
Power supply in being disconnected to cut off main circuit by the air switch in control main circuit, the important load in protection circuit,
Prevent it to be burned, reduce economic loss.In addition, the first contact end 2024 and the second contact end 2044 are connected in parallel in controller
On 30 corresponding port, the interface resource of controller 30 can be saved.
Preferably, in embodiments of the present invention, the first auxiliary reclay can include：First coil end and the first contact
End, first coil end is connected to the first phase line output terminal of contactor, and the two ends of the first contact end are respectively connecting to controller
First port and second port, the second auxiliary reclay can include：Second coil-end and the second contact end, the second coil-end connects
The second phase line output terminal of contactor is connected to, the two ends of the second contact end are respectively connecting to the port of controller the 3rd and the 4th end
Mouthful, wherein, first port, second port, the 3rd port and the 4th port are different director ports.
By the embodiment of the present invention, as long as the switching signal of any one auxiliary reclay is closure switch signal, then control
Device processed 30 can all detect switching signal, and then can determine that contactor 10 sticks together.And if all of middle relay
To disconnect switching signal, then controller 30 is all without detecting switching signal, and then can determine contactor for the switching signal of device
10 do not stick together.After contactor 10 sticks together, system can produce alarm signal, or can cut off in main circuit
Power supply, for example, can by control main circuit in air switch disconnect to cut off main circuit in power supply, in protection circuit
Important load, prevent it to be burned, reduce economic loss.In addition, the first contact end 2024 and the second contact end 2044 are distinguished
It is connected on the different port of controller 30, while it is determined that contactor 10 sticks together, can exactly concludes contact
Implement body is which phase line to there occurs adhesion in, but the connection side in parallel with the first contact end 2024 and the second contact end 2044
Formula is compared, and connected mode herein needs to consume the interface resource of more controllers 30.
When auxiliary reclay includes 3, auxiliary reclay can include：First auxiliary reclay and the second middle relay
Device and the 3rd auxiliary reclay.First auxiliary reclay is connected between the first phase line output terminal of contactor and controller；The
Two auxiliary reclays are connected between the second phase line output terminal of contactor and controller, and the 3rd auxiliary reclay is connected to contact
Between the third phase line output terminal of device and controller, wherein, third phase line output terminal is different from the first phase line output terminal, and different
In the second phase line output terminal, that is, first, second and third phase line output terminal is respectively three different phase line output terminals.
For example, it is assumed that the first auxiliary reclay is connected between the A phase output terminals of contactor and controller；In the middle of second after
Electrical equipment is connected between the B phase output terminals of contactor and controller, and the 3rd auxiliary reclay is connected to the C phase output terminals of contactor
And controller between, so, if the A phase contact adhesions of contactor, the coil of the first auxiliary reclay obtains electric, so as to it is touched
Point is changed into attracting state；In the same manner, if the B phase contact adhesions of contactor, the coil of the second auxiliary reclay obtains electric, so as to
Its contact is changed into attracting state；If the C phase contact adhesions of contactor, the coil of the 3rd auxiliary reclay obtains electric, so as to
Its contact is changed into attracting state；If any two-phase or three-phase contact adhesion in A, B, C phase contact of contactor, phase
The contact of the auxiliary reclay answered will be changed into attracting state.
It should be noted that when the contact only in contactor at least in two-phase sticks together, can just form loop, just meeting
Load in main circuit is caused to damage.
Preferably, in embodiments of the present invention, the above-mentioned detection circuit for contactor can also include：Circuit protection portion
Part.Circuit protection part is connected to controller, in contactor adhesion, protecting the load in main circuit, load to be connected to
Contactor, is controlled by contactor.Specifically, under normal circumstances, when contactor is closed, load start, and open Working mould
Formula；When contactor disconnects, load is shut down, and enters shutdown mode.
It is further preferred that in embodiments of the present invention, as shown in Fig. 2 circuit protection part can include：Breaker
40.Breaker 40 is connected between contactor 10 and controller 30, with shunted exciter tripping part 402, wherein, it is viscous in contactor 10
Lian Shi, controller 30 can generate shunted exciter tripping signal, and the shunted exciter tripping signal can be used for controlling the dropout of breaker 40, from
And cause contactor 10 to be forced open circuit, so, in 10 adhesion of contactor, main circuit can be disconnected, in preventing main circuit
Important load, such as motor and compressor are damaged.
It is further preferred that in embodiments of the present invention, circuit protection part can also include：Alarm, is connected to control
Device processed, wherein, in contactor adhesion, controller control alarm generates alarm signal.So, staff can receive
To after warning, on-call maintenance or corresponding contactor is changed.
Hereinafter the present invention is elaborated with a specific embodiment.
Contactor can include 3 contacts pair, respectively：A, b contact pair, c, d contact pair, e, f contact pair is being implemented
When, the controller output control signal on whole machine master control borad to control main circuit in A.C. contactor coil, ac contactor
One auxiliary reclay of each connection at the contact b and f of device output end, and by opening at the normally opened contact of 2 auxiliary reclays
OFF signal feeds back to master control borad.
Under normal circumstances, when the control signal of master control borad output is that contactor disconnects control signal, A.C. contactor should
This switches to off-state, the auxiliary reclay on corresponding master control borad also to switch to off-state, otherwise, if master control
Plate auxiliary reclay is disconnected closure state, then judge contactor adhesion.
That is, the voltage signal at the contact b and contact f of contactor is detected respectively by 2 auxiliary reclays, to judge
The attracting state of contactor, when the on off state of any one auxiliary reclay is inconsistent with the due state of contactor, sentences
Determine contactor adhesion, controller is tripped to protect motor or compressor by control main circuit breaker.
Wherein, after contactor adhesion is judged, need to perform adhesion protection, now, the controller on master control borad can be with
Output shunted exciter tripping signal is threaded off with controlling the shunted exciter tripping part on breaker so that main circuit breaker trips, so as to incite somebody to action
The important load such as motor or compressor is separated with main circuit, reaches the purpose of protection important load.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of detection circuit for contactor, it is characterised in that include：
Contactor, for generating output signal according to control signal；
Switch, is connected to the contactor, for the output signal of the contactor to be converted to into switching signal；
And
Controller, is connected between the contactor and the switch, for exporting the control signal to the contactor, and
The switching signal of the switch feedback is received, and the control signal according to output and the switching signal of reception detect the contact
Device whether adhesion；
The switch includes：Relay, the relay is auxiliary reclay, and the auxiliary reclay includes：
First auxiliary reclay, is connected between the first phase line output terminal of the contactor and the controller；
And
Second auxiliary reclay, is connected between the second phase line output terminal of the contactor and the controller,
Wherein, the first phase line output terminal is different from the second phase line output terminal, and the first phase line output terminal and institute
State arbitrary phase line output terminal that the second phase line output terminal is in three-phase output end.
2. the detection circuit for contactor according to claim 1, it is characterised in that in the following manner according to output
Control signal and the switching signal that receives detect the contactor whether adhesion：
Judge whether the control signal is contactor open circuit control signal；
If it is judged that the control signal is contactor open circuit control signal, then judge whether the switching signal is high
Level signal；
If it is judged that the switching signal is the high level signal, it is determined that the contactor adhesion；And/or
If it is judged that the switching signal is low level signal, it is determined that the contactor is normal.
3. the detection circuit for contactor according to claim 1, it is characterised in that
First auxiliary reclay includes：First coil end and the first contact end, the first coil end is connected to described connecing
First phase line output terminal of tentaculum, first contact end is connected to the controller,
Second auxiliary reclay includes：Second coil-end and the second contact end, second coil-end is connected to described connecing
Second phase line output terminal of tentaculum, second contact end is connected to the controller,
Wherein, first contact end and second contact end are in parallel.
4. the detection circuit for contactor according to claim 1, it is characterised in that
First auxiliary reclay includes：First coil end and the first contact end, the first coil end is connected to described connecing
First phase line output terminal of tentaculum, the two ends of first contact end are respectively connecting to the first port and second of the controller
Port,
Second auxiliary reclay includes：Second coil-end and the second contact end, second coil-end is connected to described connecing
Second phase line output terminal of tentaculum, the two ends of second contact end are respectively connecting to the port of the controller the 3rd and the 4th end
Mouthful,
Wherein, the first port, the second port, the 3rd port and the 4th port are different controller ends
Mouthful.
5. the detection circuit for contactor according to claim 1, it is characterised in that the auxiliary reclay is also wrapped
Include：
3rd auxiliary reclay, is connected between the third phase line output terminal of the contactor and the controller,
Wherein, the third phase line output terminal is different from the first phase line output terminal, and different from second phase line output
End.
6. the detection circuit for contactor according to claim 1, it is characterised in that also include：Circuit protection part,
The controller is connected to, in the contactor adhesion, protecting the load in main circuit, the load to be connected to described
Contactor, by contactor control.
7. the detection circuit for contactor according to claim 6, it is characterised in that the circuit protection part bag
Include：Breaker, is connected between the contactor and the controller, with shunted exciter tripping part,
Wherein, in the contactor adhesion, the controller generates shunted exciter tripping signal, and the shunted exciter tripping signal is used to control
Make the circuit breaker tripping so that the contactor is forced open circuit.
8. the detection circuit for contactor according to claim 7, it is characterised in that the circuit protection part is also wrapped
Include：Alarm, is connected to the controller,
Wherein, in the contactor adhesion, the controller controls the alarm and generates alarm signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510057087.0A CN104599901B (en) | 2015-02-03 | 2015-02-03 | Detection circuit used for contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510057087.0A CN104599901B (en) | 2015-02-03 | 2015-02-03 | Detection circuit used for contactor |
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| Publication Number | Publication Date |
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| CN104599901A CN104599901A (en) | 2015-05-06 |
| CN104599901B true CN104599901B (en) | 2017-05-10 |
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| CN201510057087.0A Active CN104599901B (en) | 2015-02-03 | 2015-02-03 | Detection circuit used for contactor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105332902B (en) * | 2015-12-01 | 2017-08-15 | 珠海格力电器股份有限公司 | A kind of compressor relay adhesion guard method, device and air-conditioning |
| CN106199409B (en) * | 2016-06-28 | 2019-05-31 | 苏州汇川技术有限公司 | High voltage electric equipment contactor adhesion detection system and method |
| CN108437818A (en) * | 2018-02-27 | 2018-08-24 | 北京新能源汽车股份有限公司 | A kind of charging pile control system |
| CN110660613B (en) * | 2018-06-28 | 2021-11-12 | 深圳光峰科技股份有限公司 | Power supply line control module |
| CN109596940A (en) * | 2018-12-29 | 2019-04-09 | 蜂巢能源科技有限公司 | The detection device of power battery charging contacts of contactor adhesion, vehicle |
| CN110148544B (en) * | 2019-05-05 | 2021-06-04 | 北京新能源汽车股份有限公司 | Method and device for preventing relay from being adhered |
| CN110907813B (en) * | 2019-12-10 | 2022-05-03 | 东风航盛（武汉）汽车控制系统有限公司 | Diagnosis method for relay in battery management system |
| CN114498555A (en) * | 2022-02-11 | 2022-05-13 | 北大方正集团有限公司 | Prevent dry combustion method protection circuit |
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| CN101084561A (en) * | 2004-12-23 | 2007-12-05 | 西门子公司 | Method and device for the secure operation of a switching device |
| CN201118218Y (en) * | 2007-08-21 | 2008-09-17 | 珠海格力电器股份有限公司 | Controller for preventing alternating current contactor adhesion |
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| CN202535043U (en) * | 2012-03-27 | 2012-11-14 | 上海宝钢工业技术服务有限公司 | Relay contact adhesion detection protective device in industrial remote controller |
| CN103022959A (en) * | 2013-01-11 | 2013-04-03 | 南阳防爆电气研究所有限公司 | Method and device for adhesion detection of main contact of alternating-current contactor |
| JP2014120371A (en) * | 2012-12-18 | 2014-06-30 | Nabtesco Corp | Relay |
| CN203854586U (en) * | 2013-12-13 | 2014-10-01 | 惠州市亿能电子有限公司 | Control circuit for high-voltage power-on/off judging adhesion state of relay of electric vehicle |
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2015
- 2015-02-03 CN CN201510057087.0A patent/CN104599901B/en active Active
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| CN101084561A (en) * | 2004-12-23 | 2007-12-05 | 西门子公司 | Method and device for the secure operation of a switching device |
| CN201118218Y (en) * | 2007-08-21 | 2008-09-17 | 珠海格力电器股份有限公司 | Controller for preventing alternating current contactor adhesion |
| CN201365121Y (en) * | 2009-02-24 | 2009-12-16 | 邓克飞 | Vacuum contactor adhesion controller |
| CN202535043U (en) * | 2012-03-27 | 2012-11-14 | 上海宝钢工业技术服务有限公司 | Relay contact adhesion detection protective device in industrial remote controller |
| JP2014120371A (en) * | 2012-12-18 | 2014-06-30 | Nabtesco Corp | Relay |
| CN103022959A (en) * | 2013-01-11 | 2013-04-03 | 南阳防爆电气研究所有限公司 | Method and device for adhesion detection of main contact of alternating-current contactor |
| CN203854586U (en) * | 2013-12-13 | 2014-10-01 | 惠州市亿能电子有限公司 | Control circuit for high-voltage power-on/off judging adhesion state of relay of electric vehicle |
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| CN104599901A (en) | 2015-05-06 |
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