CN105448597B - A kind of connector and contactor assembly - Google Patents
A kind of connector and contactor assembly Download PDFInfo
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- CN105448597B CN105448597B CN201410381718.XA CN201410381718A CN105448597B CN 105448597 B CN105448597 B CN 105448597B CN 201410381718 A CN201410381718 A CN 201410381718A CN 105448597 B CN105448597 B CN 105448597B
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Abstract
The present invention discloses connector and contactor assembly, and control circuit is provided on connector, and the control circuit can be connected to the coil in contactor, is used for the operation of control contactor；The control circuit includes working control circuit, for providing operating current to contactor；The working control circuit includes：PWM power save circuits, the PWM power save circuits connect the contactor；When connecting the contactor, the PWM power save circuits are provided with the signal for presetting duty ratio to contactor (20)；After connecting the contactor (20), when the PWM power save circuits maintain contactor (20) on-state, provide duty smaller signal to contactor (20), to reduce power consumption.The present invention is integrated on the connectors by PWM power save circuits, and the average driving current for reducing contactor while reduces the volume of contactor itself.
Description
Technical field
The present invention relates to connector and contactor assemblies, and relate more specifically in contactor and connection contactor
Coil and control coil work connector.
Background technology
Contactor or relay are commonly used to break-make or control operating circuit.Such as, contactor be provided with coil and it is dynamic and static touch
Head.Magnetic field can be generated when passing through electric current in contactor coil, makes dynamic and static contact closure, with the electric appliance of control load.
Due to frequently switching on and disconnecting, the contactor of high-voltage great-current or the current lead-through contact of relay can be because of mistakes
Stream, high-temperature electric arc destroy or the reasons such as prolonged application aging cause welding adhesion, to make the movable contact of contactor or relay
It is out of hand and fail.For the relay or contactor of low pressure, general circuit can very it is simple directly from circuit supervision this
Kind failure.But it is for high-voltage great-current contactor, then inconvenient directly to carry out circuit supervision.
Industry generally by the in parallel auxiliary contact in the movable contact end of contactor and it being made to be dielectrically separated from main contacts, into
And by way of the break-make for monitoring the auxiliary contact, to judge the break-make of main contacts.In addition industry also has by increasing non-connect
The mode of the magnetic Hall switch of touch, to sense position or the break-make of main contacts.Although these mode client applications are simple,
But the cost is relatively high for contactor cost and product maintenance, and magnetic Hall switch is connected in relay or contactor high current
When, it is also easily interfered by the magnetic line of force, this cannot meet the needs of contactor control.Moreover, with the various control functions of contactor
Increase, to its contact it is effective control have higher requirement.
Contactor or relay are mostly connected with various control circuits, to reach various control functions.For example, high current connects
Tentaculum is especially applied in mobile device, such as the contactor in electric vehicle, it is desirable that the average driving current of contactor is as far as possible
It is small.This kind of contactor would generally reach this requirement in conjunction with electronics battery saving arrangement.In existing contactor, electronic device is generally straight
It connects and accomplishes inside contactor or be affixed directly on contactor, start work by powering on.This mode client application letter
It is single, but the cost is relatively high for contactor cost and product maintenance.Also, when contactor or relay are combined with various control circuit
When, the circuit of circuit and connection become complicated, and contactor or relay cost is more caused to increase.Meanwhile in contactor or relay
Device tends to miniaturization, simplifies, in generalization evolution, and contactor or the diversified ecology potential of control relay circuit must be by
To limitation.
Invention content
An object of the present invention is to solve the problems, such as above a certain, provides a kind of contactor, contactor assembly and matches therewith
The control circuit of set.The present invention specifically includes following content：
A kind of control circuit, is used for the operation of control contactor, and contactor includes around iron core and iron core around setting
Coil；The control circuit includes plunger position measuring circuit, and the plunger position measuring circuit includes：
Pumping signal generation circuit is connect with the coil, can be to coil output drive signal so that coil generates electricity
Sense, with the different location of the iron core, coil generates different inductance values；
Sensing circuit is connect with the coil, for inductance value caused by measuring coil；
The sensing circuit judges the position of iron core according to different inductance values.
And
The first contactor, contactor carry coil, further include：
Control circuit above-mentioned, the control circuit are connect with the coil.
And
A kind of contactor assembly, including contactor above-mentioned；And connector；
The control circuit setting links into an integrated entity on the connector, and with the connector.
And
A kind of connector, is provided with control circuit, and the control circuit can be connected to the coil in contactor, be used for
The operation of control contactor；The control circuit includes working control circuit, for providing operating current to contactor；
The working control circuit includes：
PWM power save circuits, the PWM power save circuits connect the contactor；
When connecting the contactor, the PWM power save circuits are provided with the signal for presetting duty ratio to contactor；
After connecting the contactor, when the PWM power save circuits maintain the contactor on-state, duty ratio is provided to contactor
Smaller signal, to reduce power consumption.
And
A kind of connector and contactor assembly, including contactor, the contactor carry coil, and the contactor also wraps
It includes：Connector above-mentioned, the control circuit are connected with the coil.
The present invention advantageous effects include but not limited to：
1, the present invention can make coil generate different inductance this characteristic using different location of the iron core in coil, with survey
The variable quantity of the inductance is measured to measure the position of iron core, circuit structure is simple, and sensing is accurate.
2, pumping signal generation circuit of the invention is believed every time in performance loop off-state to coil output drive
Number, enhance the reliability of contactor by the position of sensing circuit senses iron core to judge whether contact sticks together.
3, the present invention from contactor or on interior shifting to connector, avoids working control circuit inside contactor
While to the electromagnetic interference of working line, the confined space of contactor is released, the degree of protection of contactor entirety is improved,
The physical limitation for extending contactor reduces the volume of contactor while enhancing its thermal diffusivity.
4, the present invention is equipped with plunger position measuring circuit and working control circuit, can be with control contactor by selection circuit
Working condition and detecting state, ensure contactor be in safety working condition.
5, the present invention is integrated with I/O buses (such as LIN bus transfer protocols) on the connectors, can not only reach control electricity
The mutual communication of each circuit in road, moreover it is possible to ensure contactor and extraneous effective communication, and be advantageously integrated other application.
6, the present invention is integrated on the connectors by PWM power save circuits, while reducing the average driving current of contactor
Reduce the volume of contactor itself.
Description of the drawings
Fig. 1 is the electrical block diagram of contactor 20 in first embodiment of the invention；
Fig. 2 is the electrical block diagram of contactor 20 in second embodiment of the invention；
Internal structure schematic diagram when Fig. 3 A are the dynamic and static contact of contactor 20 of the present invention；
Internal structure schematic diagram when Fig. 3 B are the dynamic and static contact separation of contactor 20 of the present invention；
Fig. 4 A are the contact position schematic diagram that the dynamic and static contact of contactor 20 does not stick together；
Fig. 4 B are the contact position schematic diagram after the dynamic and static contact of contactor 20 sticks together；With
Two of coil 22 when Fig. 5 is the abnormal position state in normal position state and Fig. 4 B of the iron core 24 such as in Fig. 4 A
The schematic diagram of charging curve；With
Fig. 6 is the electrical block diagram of contactor assembly 100 in third embodiment of the invention.
Specific implementation mode
Referring now to specific embodiment, its example is shown in the accompanying drawings.In the detailed description of specific embodiment, directionality art
Language, direction that " top ", " bottom ", " top ", " lower section ", " left side ", " the right " etc. are described with reference to the accompanying figures use.
Since the component of the embodiment of the present invention can be configured to many different directions, directional terminology is used as aid illustration
Purpose and be in no way intended to limit.As much as possible, same or similar using same or analogous label and symbolic indication in all attached drawings
Part.
Fig. 1 is the electrical block diagram of contactor 20 in first embodiment of the invention.
As shown in Figure 1, contactor (or relay) 20 includes the control circuit 10 being connected with contactor 20.Contactor 20 has
There is contactor shell 21 (see Fig. 3 A-3B), is provided with terminals 23 on shell 21, is connected to a performance loop.It is set in shell 21
There are coil 22, iron core 24, switching mechanism 26 and dynamic and static contact 28,29.Stationary contact 29 and the terminals 23 on contactor shell 21
It is connected, forms performance loop.In one embodiment of the invention, around coil around the iron core 24 of contactor 20
22.(or disappearance) magnetic drive (or attraction) iron core 24 is generated when coil 22 is powered (or power-off) makees back and forth movement (coil 22
Pushed by release spring when power-off), so that the dynamic and static contact 28,29 inside contactor 20 is contacted or is separated, to be closed or disconnect
Switching mechanism 26.Switching mechanism 26 is closed or disconnected to control being switched on or switched off for performance loop.
Control circuit 10 include controller 15, plunger position measuring circuit 16, selection circuit 17, working control circuit 18,
And I/O buses 19 (such as LIN buses).It is single that controller 15 is equipped with MCU (Micro Control Unit, micro-control unit) controls
First or other control units.Plunger position measuring circuit 16 is connected to the coil 22 in contactor 20, and includes pumping signal production
Raw circuit 162 and sensing circuit 164.Working control circuit 18 is connected to the coil 22 in contactor 20, and includes PWM (Pulse
Width Modulation, pulsewidth modulation) power save circuit 184 and electric power management circuit 182.Controller 15 connects iron core position simultaneously
Measuring circuit 16, selection circuit 17 and working control circuit 18 are set, and controls plunger position measuring circuit 16,17 and of selection circuit
The working condition of working control circuit 18 and signal communication each other.Plunger position measuring circuit 16 and job control electricity
Road 18 is connected to contactor 20 by selection circuit 17.I/O buses 19 connect controller 15, realize contactor 20, controller 15,
Selection circuit 17, plunger position measuring circuit 16 and working control circuit 18 etc. and extraneous high speed communication.
Selection circuit 17, connection plunger position measuring circuit 16 and working control circuit 18, according to the instruction of controller 15,
Selection circuit 17 is in different moments timesharing by working control circuit 18 (working condition) and (detection of plunger position sensing circuit 16
State) it is switched to and is connect with coil 22.For example, when working control circuit 18 to be made enters working condition, selection circuit 17 will
Working control circuit 18 is closed, and plunger position sensing circuit 16 is disconnected, controller 15, which sends out instruction, makes working control circuit 18
To coil 22 for electric forming performance loop, coil 22, which is powered, generates magnetic force, and iron core 24 is pushed to move, will be dynamic inside contactor 20
Contact 28 is contacted with stationary contact 29 (see Fig. 3 A, Fig. 3 B), closure switch mechanism 26, connects performance loop.
When needing the position for detecting iron core 24 that plunger position sensing circuit 16 is made to enter detecting state, selection circuit 17 will
Working control circuit 18 disconnect, plunger position sensing circuit 16 is closed, plunger position sensing circuit 16 be closed with coil 22 and
Sensing circuit 164 is formed into a loop；It is set to generate pulse inspection at this point, controller 15 sends out instruction to pumping signal generation circuit 162
It surveys signal and issues coil 22, sensing circuit 164 detects the pulse detection signals (pumping signal) returned through coil 22, and root later
Judge whether the own inductance of coil 22 changes according to the pulse detection signals of return, to detect the iron core 24 of contactor 20
Whether displacement is had.
In working condition, controller 15 instructs selection circuit 17 to be closed working control circuit 18 and coil 22, by iron
Core position sensing circuit 16 disconnects.Working control circuit 18 connect forming circuit with coil 22, in the moment for starting iron core 24, control
Device 15 processed sends out instruction to electric power management circuit 182, and exporting one to coil 22 by PWM power save circuits 184 presets
The starting current signal of duty ratio drives iron core 24, and contactor 20 is allowed to connect high-pressure work circuit, and hereafter, controller 15 is to electricity
Power management circuits 182 send out instruction, and a smaller operating current of stable duty is provided by PWM power save circuits 184 so that
Contactor 20 remains turned on.Electric power management circuit 182 controls the working condition of PWM power save circuits 184 in the process, together
When will come from the voltage of power supply port 151 (see Fig. 2, electric power is provided by working power 40) and effectively distribute to PWM economize on electricity electricity
Road 184 is allowed to the instruction works according to controller 15.The electric signal that contactor 20 does not need high-energy in working condition is used for tieing up
On-state is held, providing the operating current smaller than starting current duty can make contactor 20 work long hours, with drop
Electric power is saved in low energy consumption.
In working condition, in 20 course of work of contactor, prolonged high pressure energization may lead to 24 distal end of iron core
Movable contact 28 welds adhesion with a pair of of stationary contact 29, therefore when driving current disconnects, coil 22 powers off, and magnetic force disappears, iron core 24
Initial position can not be bounce back into, contactor 20 fails.Another situation, movable contact 28 are viscous without occurring with a pair of of stationary contact 29
Even, but iron core 24 is fastened on and rebounds path on the way, is not returned to initial position, and contactor 20 is also at abnormal position at this time.This
Under two kinds of situations, because the position of iron core 24 has changed relative to initial position, can cause the electrodynamic capacity of coil 22 relative to
Iron core 24 changes in initial position.
In detecting state, the instruction selection circuit 17 of controller 15 closes plunger position measuring circuit 16 and coil 22
It closes, selection circuit 17 disconnects working control circuit 18.Pumping signal generation circuit 162 connects with coil 22 and sensing circuit 164
Connect forming circuit.Pumping signal generation circuit 162 is to 22 output drive signal of coil so that coil 22 generates inductance, sensing electricity
The inductance value that 164 measuring coil 22 of road is fed back.With the different location of iron core 24, coil 22 generates different inductance
Value；Sensing circuit 164 judges the position of iron core 24 according to different inductance values, by the different location status measured start to
Controller 15 by I O buses export, or exported by control detection output 152.
The principle of 24 position detection of iron core is：When iron core 24 is in abnormal position (including adhesion), because with initial position
Position it is different, the electrodynamic capacity of coil 22 can be influenced, coil 22 is to generate the inductance value different from when initial position, different
The charge and discharge time of the coil of inductance value is different, and pumping signal generation circuit 162 is to 22 output drive signal of coil to line
Circle 22 charges, and because self-induction coil 22 can discharge, sensing circuit 164 can be sentenced by 22 charge and discharge times of receiving coil
Broken string circle from inductance value, compare the position that different inductance values can determine whether iron core 24.In the process, there is external work electricity
Source 40 (such as Fig. 2) provides electric power, and controller 15 is by controlling pumping signal generation circuit 162, by the electricity from working power 40
Power is sent to coil 22 in a manner of pumping signal.
In Fig. 1, control circuit 10 includes I/O buses 19, controller 15, contactor 20, selection circuit 17, iron core position
It sets measuring circuit 16 and working control circuit 18 etc. to be provided entirely on printed circuit board, printed circuit board is mounted on connector 60
On (see Fig. 6), control circuit 10 is connected by plug (141,142 in such as Fig. 2, Fig. 6) with the coil 22 of contactor 20.It is true
On, other types of communication bus agreement is equally applicable, such as CAN bus.
Before this because the limitation of contactor mold die sinking difficulty (cost) and chip technology, all control circuits are all
It is integrated in inside contactor, this mode can cause contactor volume larger, while poor radiation, and internal hot-wire coil can be to control
Circuit processed generates electromagnetic interference；With the breakthrough of die sinking process, the development of chip technology and comply with contactor design trend,
Working control circuit is arranged in connector, this mode avoids the same of the electromagnetic interference to working line inside contactor
When, the confined space of contactor is released, the physical limitation of contactor is extended, reduces and connects while enhancing its thermal diffusivity
The volume of tentaculum enhances its water resistance, it is often more important that the different function customized will be needed integrated on the connectors, and united
The appearance and model of one contactor itself, to meet the needs of using different manufacturers.
Fig. 2 is the electrical block diagram of contactor 20 in second embodiment of the invention.
As shown in Fig. 2, contactor (or relay) 20 includes the control circuit 10 being connected with contactor 20.Control circuit 10
It is connect with the coil 22 of contactor 20 by plug (141,142), control circuit 10 includes controller 15, plunger position measurement electricity
Road 16, selection circuit 17, working control circuit 18, I/O buses 19, working power 40 etc..Contactor 20 therein, controller
15, plunger position measuring circuit 16, working control circuit 18, I/O buses 19, working power 40 and the structure in first embodiment
Identical with function, this will not be repeated here.
Different from the first embodiment the structure and working method of selection circuit 17：The structure of selection circuit 17 includes the
One diode 190 and the second diode 192.First diode 190 is connected to the output end and coil 22 of PWM power save circuits 184
Input terminal between, the first diode 190 anode be connected with the output end of PWM power save circuits 184, the first diode 190
Cathode is connected with the input terminal of coil 22；Second diode 192 is connected to the input of plunger position measuring circuit 16 and coil 22
Between end, the output of the anode connection pumping signal generation circuit 162 of the second diode 192, the cathode of the second diode 192 connects
The input terminal of wiring circle 22；The output end of coil 22 simultaneously connects the input terminal and sensing circuit 164 of PWM power save circuits 184
Input terminal.
For its working condition unlike first embodiment in Fig. 1, second embodiment utilizes the one-way conduction of diode
It controls to timesharing plunger position measuring circuit 16 and working control circuit 18 is connect with coil 22.It is described in detail below：
First, when needing coil 22 to enter working condition to connect performance loop, controller 15 is to working control circuit 18
Instruction is sent out, the starting current startup that default duty ratio is sent out by the control PWM of electric power management circuit 182 power save circuits 184 connects
Tentaculum 20, at this point, starting current passes through the anode of the first diode 190 through cathode stream by the output end of PWM power save circuits 184
To the input terminal of coil 22, because the cathode of the second diode 192 is connected with coil 22, therefore starting current will not flow to pumping signal
Generation circuit 162；Starting current through plug 142 by flowing back to the inputs of PWM power save circuits 184 after 141 flowing through coil 22 of plug
End forming circuit.After iron core 24 is by promotion Operating In Persistent Current Mode circuit, controller 15 sends out instruction to working control circuit 18 and changes
The duty ratio of 184 output current of (reduction) PWM power save circuits saves electric power.When need disconnect performance loop when, controller 15 to
Working control circuit 18 sends out instruction, and controlling PWM power save circuits 184 from electric power management circuit 182 stops to coil with electric current,
Working control circuit 18 is stopped, and is rebounded by (spring) to which iron core 24 loses thrust, dynamic and static contact 28,29 detaches, work
Circuit disconnects.
Then, when needing plunger position measuring circuit 16 to enter detecting state, controller 15 generates electricity to pumping signal
Road 162 sends out instruction, stops power supply moment in working control circuit 18, is sent out from pumping signal generation circuit 162 to coil 22
Pumping signal, pumping signal are flowed into from the anode of the second diode 192, the input terminal of coil 22 are flowed to by cathode, because of first
The input terminal of the negative lead circle 22 of diode 190, therefore pumping signal will not flow to PWM economize on electricity electricity through the first diode 190
Road 184, pumping signal are formed back by flowing back to the input terminal of sensing circuit 164 after 141 flowing through coil 22 of plug through plug 142
Road, sensing circuit 164 sense the charge and discharge time of coil 22 to measure the position of iron core 24, and by position signal by detecting shape
State output feeds back to controller 15, then is communicated by I/O buses 19 and external vehicle ECU.Two are used in second embodiment
Unilateral diode substitutes the selection circuit 17 in first embodiment, directly controls plunger position measuring circuit 16 and job control electricity
The time-sharing work on road 18, structure design is simpler, and manufacturing cost is more cheap.
Control circuit 10 in second embodiment is likewise arranged on the first embodiment on printed circuit board, printing electricity
Road plate is arranged on connector 60 (see Fig. 6), is connect with the coil 22 of contactor 20 by plug (141,142).Connector 60
Various structures may be used, different functional circuit (or module) can be loaded according to different needs, general use is built-in with
The sealing of printed circuit board or non-tight separate plug-in unit, as long as dongle configuration bulk is large enough to hold required PCB electricity
Road plate.
Fig. 3 A- Fig. 3 B are the internal structure schematic diagram of invention contactor 20.As shown in Fig. 3 A- Fig. 3 B, wrapped in contactor 20
Shell 21, iron core 24 have been included, (round-trip) movement up and down is arranged in piston 25 in iron core 24, and coil 22 is looped around 24 periphery of iron core,
Control circuit 10 (such as Fig. 1-2) is connected by conducting wire 30 with coil 22.Iron core is provided with switching mechanism 26, switching on and shutting down on 24 distal end
The side of structure 26 is equipped with a pair of of movable contact 28, and performance loop is equipped with a pair of of stationary contact 29, and corresponding with movable contact 28.Shell
Terminals 23 (for another example Fig. 6) are provided on 21, terminals 23 are connected to stationary contact 29, are used for external performance loop.
As shown in Figure 3A, when operating current flows through coil 22, coil 22 generates magnetic field, can be under the action of magnetic attraction
Band dynamic iron core 24 moves up, and movable contact 28 is contacted with stationary contact 29.I.e. when being powered to coil 22, iron core 24 shifts to stationary contact
29, movable contact 28 is contacted with stationary contact 29, connects the performance loop that contactor 20 controls.
As shown in Figure 3B, when operating current powers off coil 22, iron core 24 leaves stationary contact 29, movable contact 28 and stationary contact
Point 29 disconnects, that is, disconnects the performance loop that contactor 20 controls.The long-time energization of performance loop can lead to 28 (iron core of movable contact
24 therewith) and 29 adhesion of stationary contact, normal position can not be returned to when coil 22 powers off, performance loop can not be disconnected, be connect
Tentaculum 20 fails.Even if in fact, iron core 24 does not stick together, but not completely returning to initial position, by being connected with coil 22
Pumping signal generation circuit 162 and sensing circuit 164 can also equally detected.
Fig. 4 A are the contact position schematic diagram that the contact of contactor 20 does not stick together.As shown in Figure 4 A, including iron core 24,
Circular coil 22 around iron core 24,24 distal end of iron core are equipped with switching mechanism 26, and 26 side of switching mechanism is equipped with a pair of of movable contact
28, performance loop is equipped with a pair of of stationary contact 29 corresponding with movable contact 28, and when needing to connect, iron core 24 moves, and is touched dynamic
Point 28 and stationary contact 29 contact, and are connected performance loop by switching mechanism.Performance loop is powered for a long time can make movable contact 28
With 29 adhesion of stationary contact and can not detach, cause performance loop that can not disconnect, contactor failure.In figure, stationary contact 29 does not occur
When adhesion, after coil 22 powers off, iron core 24 returns to initial position, drives 26 return of switching mechanism, movable contact 28 and controlled device
A pair of of stationary contact 29 of side detaches.
Fig. 4 B are the contact position schematic diagram after the contact of contactor 20 sticks together.As shown in Figure 4 B, movable contact 28 with
Stationary contact 29 sticks together, and after coil 22 powers off, iron core 24 cannot return to initial position, movable contact 28 and the one of controlled device side
Stationary contact 29 is remained attached to together, still has electric current to flow through in performance loop, contactor 20 fails.
Line when Fig. 5 is the abnormal position state in 24 normal position states of iron core and Fig. 4 B in such as Fig. 4 A of iron core 24
The schematic diagram of two charging curves of circle 22.
The present invention can measure inductance with a variety of methods, and the present embodiment measures electricity by the charge and discharge time of measuring coil
Sense.As shown in figure 5, under the normal condition of iron core 24 shown in Fig. 4 A, iron core 24 may return to normal position, the self-induction of coil 22
Coefficient is larger, and curent change is slower, and the charging time of the coil 22 measured is t2, may be set to desired value.When as shown in Figure 4 B,
When movable contact 28 sticks together, the electrodynamic capacity of coil 22 is smaller, and curent change is very fast, and the charging time for measuring coil 22 is
t1.If providing the charging time t2 of the coil 22 under 28 normal condition of movable contact, and it is set as desired value；Hereafter, it then will survey
Coil 22 in charging time t1 compared with expected charging time t2, if identical or in the scheduled range of desired value
It is interior, then judge that movable contact 28 does not stick together, iron core 24 is in normal condition.If different from desired value or predetermined beyond desired value
Range then judges that the position of iron core 24 is in abnormality, wherein if the difference of t1 and t2 is in a maximum value, you can sentence
Disconnected movable contact 28 sticks together, abnormality between, it can be determined that iron core 24 is not returned to initial position, but does not also occur
Adhesion.
The present invention can change this characteristic using the electrodynamic capacity of coil because iron core insertion position is different, be applied
In the position of sensing iron core itself, and position sensing circuit that is simple and practicable, being suitable for extension is devised, not only contactor manufactures
Cost and maintenance cost all reduce, but also can make connector on the basis of the circuit while have electronics electricity-saving function,
And realize and driving is controlled to the level triggers or LIN buses (or other communication buses) of contactor, it is more convenient the application of client.
Fig. 6 is the electrical block diagram of contactor assembly 100 in third embodiment of the invention.
As shown in fig. 6, contactor assembly 100 includes contactor 20 and the connector 60 being connect with contactor 20, contactor
20 include coil 22, iron core 24, switching mechanism 26, terminals 23.Control circuit 10 (such as Fig. 1-2) passes through conducting wire 30 and coil
22 are connected.(upper or interior) has control circuit 10, including electric power management circuit 182, PWM power save circuits 184, measurement in connector 60
Circuit 164, pumping signal generation circuit 162, controller 15, I O buses 19, control detection output 152 etc..Control circuit 10 is logical
Plug-in unit 141,142 is crossed detachably to connect with the coil 22 of contactor 20.Control circuit 10 is installed on a printed circuit, printing
Circuit board is arranged on connector 60.Various structures may be used in connector 60, can load according to different needs different
Functional circuit (or module), general to separate plug-in unit using the sealing for being built-in with printed circuit board or non-tight, dongle configuration is only
Bulk is wanted to be large enough to hold required PCB circuit board.
It will be understood by those skilled in the art that various changes and modification can be carried out to embodiment described herein without de-
From the spirit and scope of the present invention, therefore, this specification is intended to covering various changes and modification, if such change and modification
In the range of appended claims and its equivalent.
Claims (17)
1. a kind of connector (60), is provided with control circuit (10), the control circuit (10) can be connected to contactor
(20) coil (22) in is used for the operation of control contactor (20)；The control circuit (10) includes working control circuit
(18), it is used to provide operating current to contactor (20)；It is characterized in that：
The working control circuit (18) includes：
PWM power save circuits (184), the PWM power save circuits (184) connect the contactor (20)；
When connecting contactor (20), the PWM power save circuits are provided with to contactor (20) and preset duty ratio
Signal；
After connecting the contactor (20), when the PWM power save circuits maintain contactor (20) on-state, to contact
Device (20) provides duty smaller signal, to reduce power consumption；
The control circuit (10) is mutually detachably connect with the coil (22) by connector (60)；
The control circuit (10) further includes：
Plunger position measuring circuit (16), for generating the position signal for sensing iron core (24) in the contactor (20)；
The plunger position measuring circuit (16) includes：
Pumping signal generation circuit (162) is connect with the coil (22), can be to coil (22) output drive signal so that line
It encloses (22) and generates inductance, with the different location of iron core (24), coil (22) generates different inductance values；
Sensing circuit (164) is connect with the coil (22), for inductance value caused by measuring coil (22)；The sensing
Circuit (164) reflects the different location of iron core (24) according to different inductance values.
2. connector (60) according to claim 1, which is characterized in that the control circuit (10) further includes：
Controller (15) is connected with the control circuit (10), the operation for controlling the control circuit (10).
3. connector (60) according to claim 2, which is characterized in that the controller (15) is handled from the iron core position
The signal for setting iron core (24) position that generation at measuring circuit (16) senses, to generate iron core (24) location status.
4. connector (60) according to claim 3, which is characterized in that the control circuit (10) further includes：
Selection circuit (17), the selection circuit (17) are connected with controller (15), and by the control of the controller (15)；
The selection circuit (17) is connected with the coil (22), the selection circuit (17) and the plunger position measuring circuit
(16) it is connected with the working control circuit (18) so that the plunger position measuring circuit (16) and the working control circuit
(18) it is connected with the coil (22) by the selection circuit (17) timesharing.
5. connector (60) according to claim 3, which is characterized in that the control circuit (10) further includes：
I/O buses (19), the I/O buses (19) are connected with the controller (15), realize the controller (15) and the external world
Communication；
Controller (15) processing generates the signal of iron core (24) position sensed at plunger position measuring circuit (16),
To generate iron core (24) location status, and iron core (24) position state signal is exported by the I/O buses (19).
6. connector (60) according to claim 5, it is characterised in that：
The I/O buses (19) include LIN buses.
7. connector (60) according to claim 3, it is characterised in that：
The controller (15) controls the pumping signal generation circuit (162), and in performance loop off-state, to coil
(22) output drive signal.
8. connector (60) according to claim 7, it is characterised in that：
It is stored with inductance desired value in the sensing circuit (164), and the inductance value of gained will be measured compared with desired value, if with
In the identical or preset range in desired value of desired value, then iron core (24) position normal condition is generated；If it is different from desired value or
Beyond desired value preset range, then iron core (24) malposition state is generated.
9. connector (60) according to claim 7, it is characterised in that：
The sensing circuit (164) carrys out the inductance value of measuring coil by the measurement charge and discharge time, so that it is determined that iron core (24)
Position.
10. connector (60) according to claim 9, it is characterised in that：
The sensing circuit (164) measures the inductance caused by coil and changes the charge and discharge time difference that is formed to determine iron core
(24) position.
11. connector (60) according to claim 1, it is characterised in that：
On a printed circuit, printed circuit board is mounted on connector (60) for control circuit (10) setting.
12. connector (60) according to claim 1, it is characterised in that：
The connector (60) is attached by connector (141,142) with the coil (22).
13. a kind of connector and contactor assembly, including contactor (20), the contactor (20) carries coil (22), special
Sign is that the contactor (20) further includes：
Connector (60) as described in any one of claim 1-12, the control circuit (10) and the coil (22) phase
Even；
The plunger position measuring circuit (16) determines iron core (24) and movable contact (28) according to the inductance variable quantity of coil (22)
Locate abnormal position or normal disengaged position.
14. connector according to claim 13 and contactor assembly, it is characterised in that：
The contactor (20) includes contactor shell (21), and terminals (23) are provided on contactor shell (21), are connected to
One performance loop.
15. connector according to claim 14 and contactor assembly, it is characterised in that：
The contactor (20) includes iron core (24), and iron core (24) is distally equipped with construction of switch (26)；The coil (22) surround
Around the iron core (24), driving iron core (24) does back and forth movement, to be closed or disconnect switching mechanism (26), thus by work
It is switched on or switched off as circuit.
16. connector according to claim 15 and contactor assembly, it is characterised in that：
The distal end of the iron core (24) is equipped with a pair of of movable contact (28), and the performance loop is equipped with a pair of of stationary contact (29)；
When being powered to the coil (22), iron core (24) shifts to a pair of of stationary contact (29), movable contact (28) and stationary contact (29)
Connection；
When being powered off to the coil (22), iron core (24) leaves stationary contact (29), and movable contact (28) is disconnected with stationary contact (29).
17. connector according to claim 16 and contactor assembly, it is characterised in that：
It includes that movable contact (28) is in bonding with stationary contact (29) that the iron core (24) is in abnormal position with stationary contact (29)
Position.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410381718.XA CN105448597B (en) | 2014-08-05 | 2014-08-05 | A kind of connector and contactor assembly |
| EP15179680.2A EP2983187B1 (en) | 2014-08-05 | 2015-08-04 | Contactor, contactor assembly and control circuit |
| KR1020150110086A KR20160016721A (en) | 2014-08-05 | 2015-08-04 | Contactor, contactor assembly and control circuit |
| US14/818,556 US9916951B2 (en) | 2014-08-05 | 2015-08-05 | Contactor, contactor assembly and control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410381718.XA CN105448597B (en) | 2014-08-05 | 2014-08-05 | A kind of connector and contactor assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105448597A CN105448597A (en) | 2016-03-30 |
| CN105448597B true CN105448597B (en) | 2018-09-07 |
Family
ID=55558678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410381718.XA Expired - Fee Related CN105448597B (en) | 2014-08-05 | 2014-08-05 | A kind of connector and contactor assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105448597B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783399A (en) * | 2017-03-01 | 2017-05-31 | 上海电机学院 | A kind of intelligent type permanent magnet contactor |
| CN107170644B (en) * | 2017-06-16 | 2019-07-12 | 东南大学 | A kind of D.C. contactor energy-saving control device and control method |
| CN113500619B (en) * | 2021-06-15 | 2022-12-13 | 慧灵科技（深圳）有限公司 | Control method and circuit of electromagnetic clamping jaw and electromagnetic clamping jaw equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6031708A (en) * | 1996-04-25 | 2000-02-29 | Schneider Electric Sa | Inductive charge control device |
| CN1770349A (en) * | 2005-09-22 | 2006-05-10 | 西安交通大学 | Intelligently controlled AC contact with voltage feedback |
| CN101127286A (en) * | 2007-07-17 | 2008-02-20 | 西安交通大学 | Permanent magnetic machine controller based on pulse modulation technology |
| CN101866777A (en) * | 2010-05-14 | 2010-10-20 | 东南大学 | Reverse flux-weakening control type intelligent permanent magnet contactor with no position sensor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5370553B1 (en) * | 2012-08-31 | 2013-12-18 | オムロン株式会社 | Electromagnetic relay welding detection device and electromagnetic relay welding detection method |
-
2014
- 2014-08-05 CN CN201410381718.XA patent/CN105448597B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6031708A (en) * | 1996-04-25 | 2000-02-29 | Schneider Electric Sa | Inductive charge control device |
| CN1770349A (en) * | 2005-09-22 | 2006-05-10 | 西安交通大学 | Intelligently controlled AC contact with voltage feedback |
| CN101127286A (en) * | 2007-07-17 | 2008-02-20 | 西安交通大学 | Permanent magnetic machine controller based on pulse modulation technology |
| CN101866777A (en) * | 2010-05-14 | 2010-10-20 | 东南大学 | Reverse flux-weakening control type intelligent permanent magnet contactor with no position sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105448597A (en) | 2016-03-30 |
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