CN206421993U - A kind of relay coil drive circuit controlled based on PWM ripples - Google Patents
A kind of relay coil drive circuit controlled based on PWM ripples Download PDFInfo
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- CN206421993U CN206421993U CN201621419801.2U CN201621419801U CN206421993U CN 206421993 U CN206421993 U CN 206421993U CN 201621419801 U CN201621419801 U CN 201621419801U CN 206421993 U CN206421993 U CN 206421993U
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Abstract
The utility model provides a kind of relay coil drive circuit controlled based on PWM ripples, including power supply, microprocessor module, control module, signal acquisition module, switch element, relay coil and fly-wheel diode, wherein, the microprocessor module includes the first signal input, secondary signal input port and control signal delivery outlet；First signal input is used for the first voltage signal for receiving the first voltage acquisition module, and the secondary signal input port is used for the second voltage signal for receiving the second voltage acquisition module；The second voltage signal that the microprocessor module is used to be received according to the secondary signal input port obtains the temperature signal of relay coil, and the first voltage signal and the temperature signal of the relay coil received according to the first signal input controls the PWM ripple dutycycles of the control signal of the control signal delivery outlet output.The relay coil drive circuit controlled based on PWM ripples that the utility model is provided, directly by the output of the temperature control PWM ripple dutycycles of relay coil, can reduce energy consumption, it is to avoid energy dissipation.
Description
Technical field
The utility model is related to relay coil actuation techniques field, more particularly to a kind of relay controlled based on PWM ripples
Device coil driver.
Background technology
In automotive field, the power supply of the coil driver of AUTOMOTIVE RELAY is generally automobile 12V and starts battery,
Drive circuit passes through the driving frequently with such as Fig. 1, including power supply E, metal-oxide-semiconductor Q1 and relay KM1.This circuit structure is simple, into
This is low, but has the shortcomings that a lot for the control of AUTOMOTIVE RELAY, on the one hand will cause relay after cell voltage is reduced
Can not adhesive the problem of, on the other hand, after relay adhesive, can be led because cell voltage is added in relay coil two ends always
The defect that induced coil generates heat with energy dissipation.
For cell voltage reduce after cause relay can not adhesive the problem of, existing technology is mainly increase ascending, descending
Volt circuit, undoubtedly adds the cost of drive circuit.
Patent CN105609371《The electromagnetic relay drive circuit and implementation method of a kind of PWM ripples control》Mention one kind
The method that PWM ripple pulse duty cycles are controlled according to the size of relay coil power supply, as shown in Fig. 2 in the circuit, bag
Include microprocessor module, first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, triode Q1, the pole of afterflow two
Pipe D1 and relay KM1.The program, can make the action of driving electromagnetic relay contact fast, good adhesive, extension relay
Service life, but this scheme is disadvantageous in that the regulation of PWM ripple dutycycles is only relevant with supply voltage VCC, and works as relay
When device coil temperature changes, PWM ripples pulse duty cycle can not change therewith, and designer can only be at the beginning of design, it is considered to most dislike
Under bad temperature conditions, PWM ripples pulse duty cycle is set to maximum to meet the normal work of relay coil, and no-trump
The energy of coil heating reduces to most rational situation after adhesive.
The content of the invention
The utility model is intended to solve at least one above-mentioned technical problem to a certain extent that there is provided one kind energy can be reduced
Consumption, the relay coil drive circuit controlled based on PWM ripples directly related to relay coil temperature.
Therefore, the utility model provides a kind of relay coil drive circuit controlled based on PWM ripples, including：Power supply,
Switch element and relay coil are serially connected the major loop of composition；Fly-wheel diode, the fly-wheel diode and the relay
It is connected on after device coils from parallel connection of coils between the switch element and the power supply；Control module, the control module is connected on described
Between the both positive and negative polarity of power supply；The control module is used for the control signal for receiving microprocessor module output, and is opened described in control
Close the break-make of element；Signal acquisition module, the signal acquisition module includes first voltage acquisition module and second voltage is gathered
Module, one end connection power supply of the first voltage acquisition module, the other end ground connection of the first voltage acquisition module is described
One end connection power supply of second voltage acquisition module, the other end ground connection of the second voltage acquisition module；Microprocessor module,
The microprocessor module includes the first signal input, secondary signal input port and control signal delivery outlet；Described first
Signal input is connected with the first voltage acquisition module, the secondary signal input port and the second voltage acquisition module
Connection；The control signal delivery outlet is connected with the control module, and the control signal delivery outlet is used for output control signal
To the control module；First signal input is used for the first voltage signal for receiving the first voltage acquisition module,
The secondary signal input port is used for the second voltage signal for receiving the second voltage acquisition module；The microprocessor module
For the temperature signal of the second voltage signal acquisition relay coil received according to the secondary signal input port, and according to
The first voltage signal and the temperature signal of the relay coil that first signal input is received control the control signal
The PWM ripple dutycycles of the control signal of delivery outlet output.
In some embodiments, the switch element is metal-oxide-semiconductor, and the source electrode of the metal-oxide-semiconductor is connected with the positive pole of the power supply,
The drain electrode of the metal-oxide-semiconductor is connected with the negative pole of the fly-wheel diode, and the grid of the metal-oxide-semiconductor is connected with the control module；
The positive pole of the fly-wheel diode is connected with the negative pole of the power supply, one end of the relay coil and the fly-wheel diode
Negative pole be connected, the other end of the relay coil is connected with the positive pole of the fly-wheel diode.
In some embodiments, the first voltage acquisition module includes first resistor and second resistance, the second voltage
Acquisition module includes the 5th resistance and thermistor, and one end of the first resistor is connected with the positive pole of the power supply, and described the
One end of the other end of one resistance and second resistance is connected, the other end ground connection of the second resistance, the first resistor and the
First node is provided between two resistance, the first node is connected with first signal input；5th resistance
One end is connected with the positive pole of the power supply, and the other end of the 5th resistance and one end of thermistor are connected, the temperature-sensitive electricity
The other end ground connection of resistance, is provided with Section Point between the 5th resistance and thermistor, the Section Point and described the
Binary signal input port is connected.
In some embodiments, the control module includes 3rd resistor, the 4th resistance, the 6th resistance, the first triode, the
Two triodes and the 3rd triode, one end of the 3rd resistor are connected with the control signal delivery outlet, the 3rd resistor
The other end be connected with the base stage of first triode；One end of 4th resistance is connected with the base stage of the first triode,
The other end of shown 4th resistance is connected with the negative pole of power supply；The emitter stage of first triode is connected with the negative pole of power supply,
The colelctor electrode of first triode is connected with one end of the 6th resistance；The other end of 6th resistance and the power supply
Positive pole connection；The one end of the base stage of second triode and the 3rd triode with the 6th resistance is connected, and described
The colelctor electrode of two triodes is connected with the positive pole of the power supply, the emitter stage of second triode and the 3rd triode
Emitter stage is connected with the switch element, and the colelctor electrode of the 3rd triode is connected to the negative pole of power supply.
In some embodiments, second triode is NPN type triode, and the 3rd triode is PNP type triode.
In some embodiments, the thermistor is NTC thermistor.
In some embodiments, the calculation formula of the PWM ripples dutycycle is：
D=(R×（1+K×△T）×Ir)/E
Wherein, D is PWM ripple dutycycles, and R is the resistance value of relay coil, and K is the resistance temperature of relay coil coiling
Coefficient, △ T are temperature change value, and Ir is the maintenance electric current of relay coil, and E is the virtual voltage of power supply.
The relay coil drive circuit controlled based on PWM ripples that the utility model is provided, microprocessor module passes through the
Two voltage signals obtain relay coil temperature signal, and are controlled by first voltage signal and relay coil temperature signal
The dutycycle of PWM ripples output, temperature that can be actually by the output of dutycycle and relay coil is connected, by constantly adjusting
Save the dutycycle of PWM ripples so that the energy consumption of relay steady operation is preferably minimized, it is to avoid the waste of energy.
Additional aspect and advantage of the present utility model will be set forth in part in the description, partly by from following description
In become obvious, or by it is of the present utility model practice recognize.
Brief description of the drawings
Of the present utility model above-mentioned and/or additional aspect and advantage will from description of the accompanying drawings below to embodiment is combined
Become substantially and be readily appreciated that, wherein：
During Fig. 1 is prior art one embodiment, the circuit diagram of relay drive circuit.
During Fig. 2 is prior art another embodiment, the circuit diagram of relay drive circuit.
Fig. 3 is the circuit diagram for the relay coil drive circuit controlled based on PWM ripples that the utility model is provided.
Fig. 4 is the PWM ripple schematic diagrames for the microprocessor module output that the utility model is provided.
Reference
Microprocessor module 1；Signal acquisition module 2；Control module 3；Fly-wheel diode 4；Switch element 5；Relay
Device 6；Power supply 7.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element or element with same or like function are represented to same or similar label eventually.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Limitation.
In description of the present utility model, it is to be understood that term " length ", " width ", " thickness ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than indicate
Or imply that the device or element of meaning must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For to limitation of the present utility model.In addition, term " first ", " second " be only used for describe purpose, and it is not intended that indicate or
Imply relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", the spy of " second " are defined
One or more this feature can be expressed or implicitly include by levying.In description of the present utility model, " multiples' " contains
Justice is two or more, unless otherwise specifically defined.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the utility model.
1 to Fig. 4 relay coil controlled based on PWM ripples that illustratively the utility model is provided is driven below in conjunction with the accompanying drawings
Dynamic circuit.
A kind of relay coil drive circuit controlled based on PWM ripples, including：Power supply, switch element and relay coil
It is serially connected the major loop of composition；Fly-wheel diode, institute is connected on after the fly-wheel diode is in parallel with the relay coil
State between switch element and the power supply；Control module, the control module is connected between the both positive and negative polarity of the power supply；It is described
Control module is used for the control signal for receiving microprocessor module output, and controls the break-make of the switch element；Signal acquisition
Module, the signal acquisition module includes first voltage acquisition module and second voltage acquisition module, the first voltage collection
One end connection power supply of module, the other end ground connection of the first voltage acquisition module, the one of the second voltage acquisition module
End connection power supply, the other end ground connection of the second voltage acquisition module；Microprocessor module, the microprocessor module includes
First signal input, secondary signal input port and control signal delivery outlet；First signal input and described first
Voltage acquisition module is connected, and the secondary signal input port is connected with the second voltage acquisition module；The control signal is defeated
Outlet is connected with the control module, and the control signal delivery outlet is used for output control signal to the control module；It is described
First signal input is used for the first voltage signal for receiving the first voltage acquisition module, and the secondary signal input port is used
In the second voltage signal for receiving the second voltage acquisition module；The microprocessor module is used for according to the secondary signal
The second voltage signal that input port is received obtains the temperature signal of relay coil, and is received according to the first signal input
First voltage signal and the temperature signal of the relay coil control the control signal of control signal delivery outlet output
PWM ripple dutycycles.
The relay coil drive circuit controlled based on PWM ripples that the utility model is provided, as shown in figure 3, including power supply
E1, originates as the energy of whole drive circuit, meanwhile, the power supply in loop where also serving as relay coil；It is relay
Loop power supply where coil L, is that control module 3 and signal acquisition module 2 are powered.
In new-energy automobile field, the power supply is vapour starting battery used for vehicle.
Microprocessor module 1, the microprocessor module 1 includes the first signal input A/D1, secondary signal input port
A/D2 and control signal delivery outlet I/O；The microprocessor module 1 is used to be gathered according to the secondary signal input port A/D2
Second voltage signal obtain relay coil temperature signal, and according to the first signal input A/D1 gather first voltage believe
Number and the relay coil temperature signal control control signal delivery outlet I/O output PWM ripples dutycycle.
In the utility model, voltage signal and temperature signal have been considered, can follow up relay driving line in real time
Influence of the resistance variation of circle to PWM ripples；In real time, constantly adjusted according to first voltage signal and relay coil temperature signal
PWM ripple dutycycles, are preferably minimized the energy consumption of relay KM1 steady operations.
Meanwhile, the utility model also includes control module 3, and the control module 3 and the control signal of microprocessor module 1 are defeated
Export I/O connections, and the break-make of the PWM ripple controlling switches element 5 exported according to microprocessor module 1.
Signal acquisition module 2, including first voltage acquisition module and second voltage acquisition module, the first voltage collection
Module is connected with the first signal input A/D1, the second voltage acquisition module and the secondary signal input port A/D2 phases
Even.The first voltage signal collected and second voltage signal are inputted by the first signal input A/D1 and secondary signal respectively
Mouth A/D2 is transferred to microprocessor module 1.
Switch element 5, the switch element 5 is connected with the control module 3, and is connected to the relay coil L institutes
In the loop, the switch element 5 can realize closure or turn off under the control of the control module 3, so control it is described after
The break-make in loop where electric apparatus coil L.
After relay coil L and the parallel connection of sustained diode 1, relay coil institute is connected in the loop.
Specifically, as shown in figure 3, in one specific embodiment of the utility model, the switch element 5 is metal-oxide-semiconductor V1, institute
The source electrode for stating metal-oxide-semiconductor V1 is connected with the positive pole of the power supply E1, the drain electrode of the metal-oxide-semiconductor V1 and bearing for the sustained diode 1
Pole is connected, and the grid of the metal-oxide-semiconductor V1 is connected with the control module 3；The positive pole of the sustained diode 1 and the power supply
E1 negative pole connection, one end of the relay coil L is connected with the negative pole of the sustained diode 1, the relay coil
The L other end is connected with the positive pole of the sustained diode 1.
The first voltage acquisition module includes first resistor R1 and second resistance R2, the second voltage acquisition module bag
The 5th resistance R5 and thermistor NTC1 is included, one end of the first resistor R1 is connected with the positive pole of the power supply E1, described
The one resistance R1 other end is connected with second resistance R2 one end, the other end ground connection of the second resistance R2, first electricity
First node J1, the first node J1 and the first signal input A/D1 phases are provided between resistance R1 and second resistance R2
Even；One end of the 5th resistance R5 is connected with the positive pole of the power supply E1, the other end and the temperature-sensitive electricity of the 5th resistance R5
Hinder NTC1 one end connection, the thermistor NTC1 the other end ground connection, the 5th resistance R5 and thermistor NTC1 it
Between be provided with Section Point J2, the Section Point J2 is connected with the secondary signal input port A/D2.
The control module 3 includes 3rd resistor R3, the 4th resistance R4, the 6th resistance R6, the first triode Q1, the two or three
Pole pipe Q2 and the 3rd triode Q3, one end of the 3rd resistor R3 is connected with the control signal delivery outlet I/O, and the described 3rd
The resistance R3 other end is connected with the base stage of the first triode Q1；One end of the 4th resistance R4 and the first triode Q1
Base stage be connected, the shown 4th resistance R4 other end is connected with power supply E1 negative pole；The emitter stage of the first triode Q1
It is connected with power supply E1 negative pole, the colelctor electrode of the first triode Q1 is connected with one end of the 6th resistance R6；Described
The six resistance R6 other end is connected with the positive pole of the power supply E1；The base stage of the second triode Q2 and the 3rd triode Q3 are equal
It is connected with one end of the 6th resistance R6, the colelctor electrode of the second triode Q2 is connected with the positive pole of the power supply E1, institute
The emitter stage of the emitter stage and the 3rd triode Q3 of stating the second triode Q2 is connected with the switch element 5, and the described 3rd
Triode Q3 colelctor electrode is connected to power supply E1 negative pole.
In the above-described embodiments, the second triode Q2 is preferably NPN type triode, and the 3rd triode Q3 is preferred
For PNP type triode.
In the above-described embodiments, the thermistor is preferably NTC thermistor.
Operation principle of the present utility model：Microprocessor module 1 is defeated according to the first signal input A/D1 and secondary signal
After entrance A/D2 sampling bleeder circuit processing, by the voltage drop value in the size and thermistor NTC1 of power supply E1 voltages, calculate
Go out the value of relay coil L temperature, drive relay KM1 to be at surely by control signal delivery outlet I/O output PWM ripples
Fixed Operating In Persistent Current Mode state.Wherein, the value of the dutycycle of PWM ripples is relevant with power supply E1 voltages and coil temperature, microprocessor
Module 1 is preferably minimized the energy consumption of relay KM1 steady operations by constantly regulate PWM ripple dutycycles.The utility model has
The characteristics of simple in construction, cost-effective, relay contact action is fast and reduces energy consumption, while can guarantee that relay safety and stability again
Work.
The utility model provide based on PWM ripples control relay coil drive circuit, including be calculated as below process or
Operating procedure：
Microprocessor module 1 is passed through according to the analog quantity of second resistance R2 in the first signal input A/D1 sampling bleeder circuits
Cross A/D and be converted to digital quantity, it is assumed that the magnitude of voltage is U', then practical power voltage E：
E=U'×(（R1+R2）)/R2 （Formula 1-1）
Similarly, microprocessor module 1 is according to thermistor NTC1 in secondary signal input port A/D2 sampling bleeder circuits
Analog quantity is converted to digital quantity by A/D, it is assumed that the magnitude of voltage is U'', then thermistor NTC1 resistances are：
Rntc=(U”×R5)/(E-U”) （Formula 1-2）
Through looking into T=f in resistance NTC producers specifications（RNTC）Relational expression, it is known that the relation of resistance and temperature is：
Rntc=K×T（Rntc）（Formula 1-3）
When the temperature increases, due to the temperature characterisitic of relay-coil resistance, with the increase of coil resistance so that stream
Cross electric current Io on relay KM1 to reduce, to ensure that relay coil L also can steady operation, electric current in the case of circumstance temperature is elevated
Io have to be larger than the maintenance electric current Ir of coil, the voltage for making Uo be relay coil L, now then have：
Uo=Ir×Rntc=Ir×K×T（Rntc）（Formula 1-4）
For the reliable and stable work of guarantee relay KM1, microprocessor module 1 must adjust PWM ripple dutycycle D to improve
Uo values, then have：
D=Uo/E=(R×（1+K×△T）×Ir)/E （Formula 1-5）
In one embodiment, according to 25 degree of circumstance temperature, the Ω of relay-coil resistance value R=400, coil rating voltage is 12V,
Minimum release voltage is the 5% of rated voltage, and the temperature-coefficient of electrical resistance of copper cash is exemplified by 0.004/ degree；When relay coil L temperature
When rising to 35 degree, microprocessor module 1 converts and sends corresponding PWM ripples to drive first by control signal delivery outlet I/O
Triode Q1, it is assumed that PWM ripples dutycycle is D, and the cycle is Tpwm, and ton is high level, and toff is low level；Then PWM duty cycle D
Relationship below is met with supply voltage E and relay temperature T：
D=(R×（1+K×△T）×Ir)/E=0.052 （Formula 1-6）
According to dutycycle simultaneously meeting formula 1-4,
D=ton/(ton+toff) （Formula 1-7）
Calculate and understand, ton=Tpwm × D（Formula 1-8）
toff=Tpwm×（1-D）（Formula 1-9）
The control signal delivery outlet I/O of microprocessor module 1 is to send corresponding PWM ripples, and relay drive circuit is micro-
Under the output PWM ripple drivings of processor module 1, guard relay KM1 is in stable Operating In Persistent Current Mode state.
Relay KM1 is in stable Operating In Persistent Current Mode state, and this state is such as schemed comprising period and working time section is started
Shown in 4, implementation step is as follows:
It is assumed that the time of startup is t1, working time section is t2；
Step one：Start time period t 1, the output PWM ripples of microprocessor module 1 are high level, and the duration is slightly long, first
Triode Q1 is turned on, and automotive relay coil electric current is slightly larger, and the magnetic force for producing electromagnetic relay coil is slightly larger so that relay
The contact quick acting of coil, AUTOMOTIVE RELAY KM1 closures, relay coil is in energy storage state；
Step 2：Working time section t2, the output PWM ripple interactions of microprocessor module 1 are high and low level, and dutycycle is by micro-
Processor module 1 calculates gained according to supply voltage E fluctuation and relay coil temperature T change.High and low level time point
Ton and toff are not corresponded to；
In the t2 stages, as t=ton, microprocessor module output high level, the first triode Q1 conductings, relay KM1
Equivalent inductance L produce induced electromotive force be：
UL=di/dton×L UO=E-UL （Formula 1-10）
In the t2 stages, as t=toff, the output low level of microprocessor module 1, the first triode Q1 ends, in relay
Load current releases energy by sustained diode 1, and induced-current exponentially declines, i.e.,
UL'=di/dtoff×L UO'=UL' （Formula 1-11）
When AUTOMOTIVE RELAY is in stable working condition, load current is equal in the initial value and final value of a cycle,
Then in a cycle, dutycycle D values are
D=(R×（1+K×△T）×Ir)/E=ton/(ton+toff) （Formula 1-12）
In the t2 stages, using the continuous energy storage of equivalent inductance L in AUTOMOTIVE RELAY KM1 with releasing energy, microprocessor module
By D=(R ×（1+K×△T）× Ir)/E the effective modulation (PWM) ripple of relation dutycycle D, make relay is stable to be operated in
In its range of nominal tension, and the energy consumption of steady operation is preferably minimized.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described
Point is contained at least one embodiment of the present utility model or example.In this manual, to the schematic table of above-mentioned term
State and be not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be
Combined in an appropriate manner in any one or more embodiments or example.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is not departing from the utility model
Principle and objective in the case of above-described embodiment can be changed in the range of the utility model, change, replace and
Modification.
Claims (6)
1. a kind of relay coil drive circuit controlled based on PWM ripples, it is characterised in that including：
Power supply, switch element and relay coil are serially connected the major loop of composition；
Fly-wheel diode, the switch element and the electricity are connected on after the fly-wheel diode is in parallel with the relay coil
Between source；
Control module, the control module is connected between the both positive and negative polarity of the power supply；The control module is used to receive micro- place
The control signal of device module output is managed, and controls the break-make of the switch element；
Signal acquisition module, the signal acquisition module includes first voltage acquisition module and second voltage acquisition module, described
One end connection power supply of first voltage acquisition module, the other end ground connection of the first voltage acquisition module, the second voltage
One end connection power supply of acquisition module, the other end ground connection of the second voltage acquisition module；
Microprocessor module, the microprocessor module includes the first signal input, secondary signal input port and control letter
Number delivery outlet；First signal input is connected with the first voltage acquisition module, the secondary signal input port and institute
State the connection of second voltage acquisition module；The control signal delivery outlet is connected with the control module, the control signal output
Mouth is used for output control signal to the control module；First signal input is used to receive the first voltage collection mould
The first voltage signal of block, the secondary signal input port is used for the second voltage letter for receiving the second voltage acquisition module
Number；The second voltage signal that the microprocessor module is used to be received according to the secondary signal input port obtains relay line
The temperature signal of circle, and the first voltage signal and the temperature letter of the relay coil received according to the first signal input
The PWM ripple dutycycles of the control signal of number control control signal delivery outlet output.
2. the relay coil drive circuit according to claim 1 controlled based on PWM ripples, it is characterised in that described to open
Pass element is metal-oxide-semiconductor, and the source electrode of the metal-oxide-semiconductor is connected with the positive pole of the power supply, the drain electrode of the metal-oxide-semiconductor and the afterflow two
The negative pole connection of pole pipe, the grid of the metal-oxide-semiconductor is connected with the control module；The positive pole of the fly-wheel diode and the electricity
The negative pole connection in source, one end of the relay coil is connected with the negative pole of the fly-wheel diode, the relay coil
The other end is connected with the positive pole of the fly-wheel diode.
3. the relay coil drive circuit according to claim 1 controlled based on PWM ripples, it is characterised in that described the
One voltage acquisition module includes first resistor and second resistance, and the second voltage acquisition module includes the 5th resistance and temperature-sensitive electricity
Resistance, one end of the first resistor is connected with the positive pole of the power supply, the other end of the first resistor and the one of second resistance
End connection, the other end ground connection of the second resistance, first node is provided between the first resistor and second resistance, described
First node is connected with first signal input；One end of 5th resistance is connected with the positive pole of the power supply, described
One end of the other end of 5th resistance and thermistor is connected, the other end ground connection of the thermistor, the 5th resistance and
Section Point is provided between thermistor, the Section Point is connected with the secondary signal input port.
4. the relay coil drive circuit according to claim 1 controlled based on PWM ripples, it is characterised in that the control
Molding block includes 3rd resistor, the 4th resistance, the 6th resistance, the first triode, the second triode and the 3rd triode, described the
One end of three resistance is connected with the control signal delivery outlet, the base of the other end of the 3rd resistor and first triode
Extremely it is connected；One end of 4th resistance is connected with the base stage of the first triode, the other end of shown 4th resistance and power supply
Negative pole is connected；The emitter stage of first triode is connected with the negative pole of power supply, the colelctor electrode of first triode with it is described
One end of 6th resistance is connected；The other end of 6th resistance is connected with the positive pole of the power supply；Second triode and
The one end of the base stage of 3rd triode with the 6th resistance is connected, colelctor electrode and the power supply of second triode
Positive pole is connected, and the emitter stage of the emitter stage of second triode and the 3rd triode is connected with the switch element, institute
The colelctor electrode for stating the 3rd triode is connected to the negative pole of power supply.
5. the relay coil drive circuit according to claim 4 controlled based on PWM ripples, it is characterised in that described the
Two triodes are NPN type triode, and the 3rd triode is PNP type triode.
6. the relay coil drive circuit according to claim 3 controlled based on PWM ripples, it is characterised in that the heat
Quick resistance is NTC thermistor.
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| CN201621419801.2U CN206421993U (en) | 2016-12-22 | 2016-12-22 | A kind of relay coil drive circuit controlled based on PWM ripples |
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| CN201621419801.2U CN206421993U (en) | 2016-12-22 | 2016-12-22 | A kind of relay coil drive circuit controlled based on PWM ripples |
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| CN206421993U true CN206421993U (en) | 2017-08-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107958811A (en) * | 2017-12-28 | 2018-04-24 | 东风商用车有限公司 | A kind of onboard relay high current control system of controller and application method |
| CN108735552A (en) * | 2018-08-17 | 2018-11-02 | 广州金升阳科技有限公司 | The coil control circuit of contactor |
| CN109743000A (en) * | 2018-12-18 | 2019-05-10 | 深圳市优必选科技有限公司 | Servo motor braking circuit, servo motor braking system and braking method |
| WO2019148632A1 (en) * | 2018-02-05 | 2019-08-08 | 广东美的制冷设备有限公司 | Relay driving circuit and air conditioner |
| CN110223881A (en) * | 2019-04-16 | 2019-09-10 | 上海诺雅克电气有限公司 | Contactor control circuit and contactor coil voltage control method |
| CN110767502A (en) * | 2018-07-27 | 2020-02-07 | 施耐德电气工业公司 | Method, controller and system for regulating current of coil |
| CN111061327A (en) * | 2019-12-12 | 2020-04-24 | 联合汽车电子有限公司 | Closed-loop control system and closed-loop control method of driving circuit |
| WO2020182115A1 (en) * | 2019-03-13 | 2020-09-17 | 泰科电子(上海)有限公司 | Drive circuit for relay device and relay device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107958811A (en) * | 2017-12-28 | 2018-04-24 | 东风商用车有限公司 | A kind of onboard relay high current control system of controller and application method |
| WO2019148632A1 (en) * | 2018-02-05 | 2019-08-08 | 广东美的制冷设备有限公司 | Relay driving circuit and air conditioner |
| CN110767502A (en) * | 2018-07-27 | 2020-02-07 | 施耐德电气工业公司 | Method, controller and system for regulating current of coil |
| US11081305B2 (en) | 2018-07-27 | 2021-08-03 | Schneider Electric Industries Sas | Method, controller and system for regulating a current of a coil |
| CN110767502B (en) * | 2018-07-27 | 2021-10-08 | 施耐德电气工业公司 | Method, controller and system for regulating current of coil |
| CN108735552A (en) * | 2018-08-17 | 2018-11-02 | 广州金升阳科技有限公司 | The coil control circuit of contactor |
| CN108735552B (en) * | 2018-08-17 | 2024-01-16 | 广州金升阳科技有限公司 | Coil control circuit of contactor |
| CN109743000A (en) * | 2018-12-18 | 2019-05-10 | 深圳市优必选科技有限公司 | Servo motor braking circuit, servo motor braking system and braking method |
| WO2020182115A1 (en) * | 2019-03-13 | 2020-09-17 | 泰科电子(上海)有限公司 | Drive circuit for relay device and relay device |
| CN110223881A (en) * | 2019-04-16 | 2019-09-10 | 上海诺雅克电气有限公司 | Contactor control circuit and contactor coil voltage control method |
| CN111061327A (en) * | 2019-12-12 | 2020-04-24 | 联合汽车电子有限公司 | Closed-loop control system and closed-loop control method of driving circuit |
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