CN206932160U - A kind of control circuit of motor drive power supply - Google Patents
A kind of control circuit of motor drive power supply Download PDFInfo
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- CN206932160U CN206932160U CN201720770800.0U CN201720770800U CN206932160U CN 206932160 U CN206932160 U CN 206932160U CN 201720770800 U CN201720770800 U CN 201720770800U CN 206932160 U CN206932160 U CN 206932160U
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- 230000002441 reversible effect Effects 0.000 claims abstract description 17
- 239000003985 ceramic capacitor Substances 0.000 claims description 17
- 230000005611 electricity Effects 0.000 claims description 14
- 239000003990 capacitor Substances 0.000 claims description 11
- 238000005868 electrolysis reaction Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 6
- 230000036961 partial effect Effects 0.000 description 4
- 230000000087 stabilizing effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000003071 parasitic effect Effects 0.000 description 3
- 230000005059 dormancy Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000024241 parasitism Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model discloses a kind of control circuit of motor drive power supply, including：Electromotive force circuit is dragged in power supply controlable electric current, reverse-connection preventing circuit and counnter attack.The break-make control command that power supply controlable electric current can export according to microprocessor performs corresponding make-break operation, thus can electric motor of automobile in a dormant state when, cut off the power supply of Car's door controlling device, reduce the quiescent dissipation of Car's door controlling device；Reverse-connection preventing circuit can be in reverse power connection, the path between deenergization and motor-drive circuit, so as to effectively avoid the situation for causing drive part to damage because of reverse power connection；Counnter attack drag electromotive force circuit can in hand switch car door, prevent it is counter drag electromotive force flow into controller, so as to protect controller to be not damaged by.
Description
Technical field
Motor control technology field is the utility model is related to, in particular, is related to a kind of control of motor drive power supply
Circuit.
Background technology
With the development of automotive electronic technology, automation and the intelligence degree more and more higher of automobile, therefore, on automobile
Controller is also more and more.After automobile flameout, the controller on automobile can largely enter resting state, but be in dormancy shape
The controller of state can still consume the electric energy of on-vehicle battery, therefore, after automobile is flame-out for a long time, easily on-vehicle battery can be caused to lose
Electricity, so that automobile can not normal ignition startup.
Duration is used for raising on-vehicle battery, is mainly realized at present by way of controlled motor driving power, motor
The control circuit of driving power need to can solve the problem that following three problem：(1) it is capable of the quiescent current of restriction controller, it is quiet to reduce
State power consumption.From arrangements for automotive doors, including：The Electronic control angle of automobile engine lid, side door, sliding door and trunk door and
Speech, the motor driving part point of Car's door controlling device consume substantial amounts of electric energy in the dormant state, it is therefore desirable to cut off Car's door controlling
The power supply of device, to reduce quiescent dissipation.(2) for the scheme of the full-bridge mode motor using metal-oxide-semiconductor composition, it is necessary to design
There is reverse connection prevention protection circuit, to prevent because reverse power connection causes drive part to damage.(3) because arrangements for automotive doors must have manually
Switching function, and when hand switch car door, its motor is equivalent to generator, counter caused by the motor to drag electricity
Kinetic potential, controller can be flowed into power line, and damage is produced to controller, therefore, it is necessary to design circuit to prevent this part
Damage of the electric energy to controller.
To solve the problems, such as above three, the scheme used in the prior art has：1st, using relay come the drive of controlled motor
Dynamic power supply, although the program can solve problem (1) and problem (2), can not solve problem (3).Also, contain in relay
Mechanical part, therefore it is short and have the problem of mechanical abnormal sound service life to be present.2nd, using NMOS tube come the driving electricity of controlled motor
Source, although the program can play anti-reverse function, due to the presence of NMOS tube endophyte diode, cause the program
The dormancy power consumption of drive circuit can not be reduced and prevent counter to drag electromotive force.Also, NMOS tube needs to produce one in gate pole
Higher voltage could be opened, it is therefore desirable to which circuit has boost function, and so as to cause circuit complicated, hardware cost is higher.
To sum up, a kind of control circuit of motor drive power supply how is provided to solve the problems, such as above three, becomes ability
The technical problem of field technique personnel's urgent need to resolve.
Utility model content
In view of this, the utility model discloses a kind of control circuit of motor drive power supply, quiet to solve Car's door controlling device
State power consumption is big, motor driving part point is anti-reverse and prevents anti-the problem of dragging electromotive force to damage controller.
A kind of control circuit of motor drive power supply, including：
Power supply controlable electric current, the power input of the power supply controlable electric current are used to connect on-vehicle battery, signal acquisition terminal
For connecting microprocessor, the signal acquisition terminal is used for the break-make control command for gathering the microprocessor output, so that institute
State power supply controlable electric current and corresponding make-break operation is performed according to the break-make control command；
It is described in reverse power connection, disconnecting the reverse-connection preventing circuit of path between the power supply and motor-drive circuit
The input of reverse-connection preventing circuit connects the first signal control terminal of the power supply controlable electric current, the control terminal of the reverse-connection preventing circuit
Ground connection；
The anti-counnter attack for dragging electromotive force to flow into controller in hand switch car door, preventing drags electromotive force electric
Road, the counnter attack drag the control terminal of electromotive force circuit to connect the secondary signal control terminal of the power supply controlable electric current, the counnter attack
The input of electromotive force circuit is dragged to connect the second output end of the reverse-connection preventing circuit, the output of electromotive force circuit is dragged in the counnter attack
End connects the control terminal of the reverse-connection preventing circuit；
Wherein, output end of the first output end of the reverse-connection preventing circuit as whole control circuit, it is described for connecting
The input of motor-drive circuit.
Preferably, the power supply controlable electric current includes：First switch pipe, second switch pipe, the first voltage-regulator diode, first
Resistance and second resistance；
Power input of the input of the first switch pipe as the power supply controlable electric current, for connecting the car
Battery is carried, the control terminal of the first switch pipe connects the input of the second switch pipe by the second resistance, described
The first resistor and first voltage-regulator diode are connected in parallel between the input and control terminal of first switch pipe, its
In, the negative electrode of first voltage-regulator diode connects the input of the first switch pipe, the sun of first voltage-regulator diode
Pole connects the control terminal of the first switch pipe, and the output end of the first switch pipe is as described in the power supply controlable electric current
First signal control terminal, connect the input of the reverse-connection preventing circuit；
The signal acquisition terminal of the control terminal of the second switch pipe as the power supply controlable electric current, for connecting
State microprocessor, the output head grounding of the second switch pipe, wherein, the second switch pipe has been internally integrated two electricity
Resistance.
Preferably, the reverse-connection preventing circuit includes：3rd switching tube, the second voltage-regulator diode, 3rd resistor and the 4th electricity
Resistance；
Input of the input of 3rd switching tube as the reverse-connection preventing circuit, connects the power supply controlable electric current
The first signal control terminal, the control terminal of the 3rd switching tube passes through the 4th resistance eutral grounding, the 3rd switch
The 3rd resistor and the pole of the second voltage stabilizing two are connected in parallel between the output end of pipe and the control terminal of the 3rd switching tube
Pipe, wherein, the negative electrode of second voltage-regulator diode connects the output end of the 3rd switching tube, second voltage-regulator diode
Anode connect the control terminal of the 3rd switching tube；
The output end of 3rd switching tube, the negative electrode of second voltage-regulator diode and the 3rd resistor it is public
First output end as the reverse-connection preventing circuit is held, for connecting the input of the motor-drive circuit；
The common port of the anode of second voltage-regulator diode, the 3rd resistor and the 4th resistance, as described
Second output end of reverse-connection preventing circuit, connects the input that electromotive force circuit is dragged in the counnter attack.
Preferably, the counnter attack drags electromotive force circuit to include：4th switching tube, the 5th switching tube, the 3rd voltage-regulator diode,
4th voltage-regulator diode, the 5th voltage-regulator diode, the 5th resistance and the 6th resistance；
The input of 4th switching tube drags the input of electromotive force circuit as the counnter attack, connects described anti-reverse
Second output end of circuit, the output end of the 4th switching tube drag the output end of electromotive force circuit as the counnter attack, connection
The control terminal of the reverse-connection preventing circuit；
The negative electrode of 3rd voltage-regulator diode connects the input of the 4th switching tube, and anode connection the described 4th is opened
Close the control terminal of pipe；
One end of 5th resistance connects the input of the 4th switching tube and the moon of the 3rd voltage-regulator diode
The common port of pole, the other end of the 5th resistance connect the control terminal of the 4th switching tube and described the by the 6th resistance
The common port of the anode of three voltage-regulator diodes；
The input of 5th switching tube connects the common port of the 5th resistance and the 6th resistance, the 5th switch
The output head grounding of pipe, the control terminal of the 5th switching tube are dragged described in the control terminal connection of electromotive force circuit as the counnter attack
The secondary signal control terminal of power supply controlable electric current；
The negative electrode of 5th voltage-regulator diode connects the control terminal of the 5th switching tube, plus earth；
The negative electrode of 4th voltage-regulator diode connects the common port of the 5th resistance and the 6th resistance, and anode connects
Ground.
Preferably, the counnter attack drags electromotive force circuit also to include：Filter condenser；
One end of the filter condenser connects the input of the 5th switching tube, the other end of the filter condenser
Ground connection.
Preferably, the control circuit also includes filter circuit；
The input of the filter circuit connects first output end of the reverse-connection preventing circuit, the filter circuit
Output end of the output end as whole control circuit, for connecting the input of the motor-drive circuit.
Preferably, the filter circuit includes：Pi type filter, electrochemical capacitor and the first filter branch；
The input of the pi type filter connects first output end of the reverse-connection preventing circuit, the pi type filter
Output end be connected respectively with the positive plate of the electrochemical capacitor and the input of first filter branch, it is described electrolysis electricity
The negative pole plate earthing of appearance, the output head grounding of first filter branch；
The common port of the pi type filter, the electrochemical capacitor and first filter branch is as whole control circuit
Output end, for connecting the input of the motor-drive circuit.
Preferably, the pi type filter includes：Second filter branch, the 3rd filter branch and inductance；
One end of the inductance connects the input of second filter branch, the other end connection of the inductance described the
The input of three filter branch, the output head grounding of second filter branch, the output head grounding of the 3rd filter branch.
Preferably, second filter branch includes the first ceramic capacitor and the second ceramic capacitor being connected in series；
3rd filter branch includes the 3rd ceramic capacitor and the 4th ceramic capacitor being connected in series.
Preferably, first filter branch includes the 5th ceramic capacitor and the 6th ceramic capacitor being connected in series.
It was found from above-mentioned technical scheme, the utility model discloses a kind of control circuit of motor drive power supply, including：
Electromotive force circuit is dragged in power supply controlable electric current, reverse-connection preventing circuit and counnter attack.What power supply controlable electric current can export according to microprocessor
Break-make control command performs corresponding make-break operation, thus can electric motor of automobile in a dormant state when, cut off Car's door controlling
The power supply of device, reduce the quiescent dissipation of Car's door controlling device；Reverse-connection preventing circuit can be in reverse power connection, and deenergization drives with motor
Path between dynamic circuit, so as to effectively avoid the situation for causing drive part to damage because of reverse power connection；Counnter attack is dragged electronic
Gesture circuit can in hand switch car door, prevent it is counter drag electromotive force flow into controller, so as to protect controller not by
Damage.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is embodiment of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to disclosed accompanying drawing.
Fig. 1 is a kind of structural representation of the control circuit of motor drive power supply disclosed in the utility model embodiment；
Fig. 2 is a kind of structural representation of the control circuit of motor drive power supply disclosed in the utility model embodiment；
Fig. 3 is a kind of schematic diagram of the control circuit of motor drive power supply disclosed in the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
The utility model embodiment discloses a kind of control circuit of motor drive power supply, to solve Car's door controlling device static state
Power consumption is big, motor driving part point is anti-reverse and prevents anti-the problem of dragging electromotive force to damage controller.
Referring to Fig. 1, a kind of structural representation of the control circuit of motor drive power supply disclosed in the embodiment of the utility model one
Figure, the control circuit include：Electromotive force circuit 13 is dragged in power supply controlable electric current 11, reverse-connection preventing circuit 12 and counnter attack；
Wherein：
The power input of power supply controlable electric current 11 is used to connect on-vehicle battery, the signal acquisition terminal of power supply controlable electric current 11
For connecting microprocessor, signal acquisition terminal is used for the break-make control command for gathering microprocessor output, so that power supply controllable electric
Road 11 performs corresponding make-break operation according to break-make control command.
Specifically, in actual applications, the connector of the power input connection microprocessor of power supply controlable electric current 11, by
The connector is sequentially connected fuse and on-vehicle battery by wire.
In actual applications, the signal acquisition terminal of power supply controlable electric current 11 specifically connects with the main control chip in microprocessor
Connecing, power supply controlable electric current 11 gathers the break-make control command of main control chip output by signal acquisition terminal, and according to the break-make control
System order performs corresponding make-break operation.
First signal control terminal of the input connection power supply controlable electric current 11 of reverse-connection preventing circuit 12, reverse-connection preventing circuit 12
Control terminal is grounded, and reverse-connection preventing circuit 12 is used in reverse power connection, path between deenergization and motor-drive circuit, so as to
Effectively to avoid the damaged condition of the metal-oxide-semiconductor caused by reverse power connection.
Wherein, output end of the first output end of reverse-connection preventing circuit 12 as whole control circuit, driven for connecting motor
The input of dynamic circuit.
Counnter attack drags the control terminal of electromotive force circuit 13 to connect the secondary signal control terminal of power supply controlable electric current 11, and electricity is dragged in counnter attack
Second output end of the input connection reverse-connection preventing circuit 12 of kinetic potential circuit 13, counnter attack drag the output end of electromotive force circuit 13 to connect
The control terminal of reverse-connection preventing circuit 12, counnter attack drag electromotive force circuit 13 to be used in hand switch car door, and what is prevented counter drags electricity
Kinetic potential flows into controller, so as to protect controller to be not damaged by.
To sum up, the control circuit of motor drive power supply disclosed in the utility model, power supply controlable electric current 11 can be according to micro-
The break-make control command of processor output performs corresponding make-break operation, thus can electric motor of automobile in a dormant state when,
The power supply of Car's door controlling device is cut off, reduces the quiescent dissipation of Car's door controlling device；Reverse-connection preventing circuit 12 can break in reverse power connection
Path between switch power supply and motor-drive circuit, so as to effectively avoid the damage of the metal-oxide-semiconductor caused by reverse power connection
Situation；Counnter attack drag electromotive force circuit 13 can in hand switch car door, prevent it is counter drag electromotive force flow into controller, from
And controller is protected to be not damaged by.
During reducing motor driving, transmitting radiation of the controller to the conduct radiation on power line and controller, this
Utility model has made further improvement on the basis of embodiment illustrated in fig. 1.
Referring to Fig. 2, a kind of structure of the control circuit of motor drive power supply is shown disclosed in another embodiment of the utility model
It is intended to, on the basis of embodiment illustrated in fig. 1, in addition to：Filter circuit 14；
First output end of the input connection reverse-connection preventing circuit 12 of filter circuit 14, the output end conduct of filter circuit 14
The output end of whole control circuit, for connecting the input of motor-drive circuit.
To further illustrate the operation principle of the control circuit of motor drive power supply disclosed in the utility model, this practicality is newly
Type additionally provides the schematic diagram of the control circuit of motor drive power supply.
Referring to Fig. 3, a kind of schematic diagram of the control circuit of motor drive power supply disclosed in the embodiment of the utility model one, this
In embodiment, power supply controlable electric current 11 can include：First switch pipe Q1, second switch pipe Q2, the first voltage-regulator diode D1,
One resistance R1 and second resistance R2；
Specifically, power input UB of the first switch pipe Q1 input 3 as power supply controlable electric current 11, for connecting
On-vehicle battery, by second resistance R2 connection second switch pipes Q2 input 3, first opens first switch pipe Q1 control terminal 1
Close and be connected in parallel to first resistor R1 and the first voltage-regulator diode D1 between pipe Q1 input 3 and control terminal 1, wherein, first
Voltage-regulator diode D1 negative electrode connection first switch pipe Q1 input 3, anode connection first switch pipe Q1 control terminal 1, the
First signal control terminal of the one switching tube Q1 output end 2 as power supply controlable electric current 11, connect the input of reverse-connection preventing circuit 12
End.
Preferably, first switch pipe Q1 selects PMOS.
Signal acquisition terminal EN of the second switch pipe Q2 control terminal 1 as power supply controlable electric current 11, for connecting microprocessor
Device, the signal acquisition terminal are used for the break-make control command for gathering microprocessor output；Second switch pipe Q2 output end 2 is grounded,
Second switch pipe Q2's has been internally integrated two resistance.
Preferably, second switch pipe Q2 selects triode.
Reverse-connection preventing circuit 12 can include：3rd switching tube Q3, the second voltage-regulator diode D2, the electricity of 3rd resistor R3 and the 4th
Hinder R4；
Input of the 3rd switching tube Q3 input 2 as reverse-connection preventing circuit 12, the of connection power supply controlable electric current 11
One signal control terminal, the 3rd switching tube Q3 control terminal 1 are grounded by the 4th resistance R4, the 3rd switching tube Q3 He of output end 3
3rd resistor R3 and the second voltage-regulator diode D2 are connected in parallel between 3rd switching tube Q3 control terminal 1, wherein, the second voltage stabilizing two
Pole pipe D2 negative electrode connects the 3rd switching tube Q3 output end 3, and the second voltage-regulator diode D2 anode connects the 3rd switching tube Q3
Control terminal 1；
The common port of 3rd switching tube Q3 output end 3, the second voltage-regulator diode D2 negative electrode and 3rd resistor R3 is made
For the first output end of reverse-connection preventing circuit 12, for connecting the input of motor-drive circuit；
The common port of second voltage-regulator diode D2 anode, 3rd resistor R3 and the 4th resistance R4, as reverse-connection preventing circuit
The input of electromotive force circuit 13 is dragged in 12 the second output end, connection counnter attack.
Preferably, the 3rd switching tube Q3 selects PMOS.
Counnter attack drags electromotive force circuit 13 to include：4th switching tube Q4, the 5th switching tube Q5, the 3rd voltage-regulator diode D3,
Four voltage-regulator diode D4, the 5th voltage-regulator diode D5, the 5th resistance R5 and the 6th resistance R6；
4th switching tube Q4 input 2 drags the input of electromotive force circuit 13 as counnter attack, connects reverse-connection preventing circuit 12
The second output end, the 4th switching tube Q4 output end 3 drags the output end of electromotive force circuit 13 as counnter attack, connects anti-reverse electricity
The control terminal on road 12；
3rd voltage-regulator diode D3 negative electrode connects the 4th switching tube Q4 input 2, and anode connects the 4th switching tube Q4
Control terminal 1；
5th resistance R5 one end connects the public affairs of the 4th switching tube Q4 voltage-regulator diode D3 of input 2 and the 3rd negative electrode
End altogether, the control terminal 1 and the pole of the 3rd voltage stabilizing two of the 5th resistance R5 other end by the switching tube Q4 of the 6th resistance R6 connections the 4th
The common port of pipe D3 anode；
5th switching tube Q5 input 2 connects the 5th resistance R5 and the 6th resistance R6 common port, the 5th switching tube Q5
Output end 3 be grounded, it is controllable that the 5th switching tube Q5 control terminal 1 as counnter attack drags the control terminal of electromotive force circuit 13 to connect power supply
The secondary signal control terminal of circuit 11；
5th voltage-regulator diode D5 negative electrode connects the 5th switching tube Q5 control terminal 1, plus earth；
4th voltage-regulator diode D4 negative electrode connection the 5th resistance R5 and the 6th resistance R6 common port, plus earth.
Preferably, the 4th switching tube Q4 selects PMOS, and the 5th switching tube Q5 selects NMOS tube.
Electromotive force circuit 13 is dragged also to include for further optimization above-described embodiment, counnter attack：Filter condenser C8；
Filter condenser C8 one end connects the 5th switching tube Q5 input 2, the other end ground connection of filter condenser.
The operation principle of control circuit shown in Fig. 3 is specific as follows：
Wherein, in operation principle narration, first switch pipe Q1 is replaced with PMOS Q1, second switch pipe Q2 triodes
Q2 is replaced, and the 3rd switching tube Q3 is replaced with PMOS Q3, and the 4th switching tube Q4 is replaced with PMOS Q4, and the 5th switching tube Q5 is used
NMOS tube Q5 is replaced；
(1) when whole control circuit normal work, power input UB connection on-vehicle batteries, make when needing motor
When car door acts, microprocessor driven signal acquisition terminal EN output high level, triode Q2 conductings, the electricity of first resistor R1 and second
The voltage that resistance R2 exports to on-vehicle battery carries out partial pressure so that and PMOS Q1 gate voltage is less than its source voltage, so as to
PMOS Q1 is turned on, and supply voltage flows through the parasitic diode of the 3rd switching tube Q3 in PMOS Q1 and reverse-connection preventing circuit 12,
3rd resistor R3 and the 4th resistance R4 carry out partial pressure to it so that PMOS Q3 gate voltage is less than its source voltage, PMOS
Pipe Q3 is turned on, and supply voltage reaches the output end UBD of whole control circuit；
When not needing motor to act car door, microprocessor driven signal acquisition terminal EN output low levels, three poles
Pipe Q2 is turned off, and then PMOS Q1 is turned off, from figure 3, it can be seen that PMOS Q1 parasitic diode is towards power input
UB, therefore the power supply of subsequent drive circuit can be turned off.
(2) when reverse power connection, 3rd resistor R3 and the 4th resistance R4 can carry out partial pressure to supply voltage so that PMOS
Q3 gate voltage is more than its source voltage, so that PMOS Q3 can not be turned on, in addition, the pole of parasitism two inside PMOS Q3
The direction of pipe also determines that electric current can not flow through from parasitic diode, therefore, in reverse power connection, does not have electric current and flows through driving
Part, so as to effectively avoid the situation for causing drive part to damage because of reverse power connection.
(3) electromotive force circuit 13 is dragged for counnter attack, its role under three kinds of different operating modes is specific as follows：
A, when on-vehicle battery is not installed, as in producing line battery installation before or unloading battery repair when, hand switch car door,
Equivalent to one generator of motor in car door, and send out it is counter drag electromotive force, at this moment NMOS tube Q5 does not work, when
When the anti-voltage for dragging electromotive force is less than the 4th voltage-regulator diode D4 operating voltage, the 4th voltage-regulator diode D4 does not work, from
And PMOS Q4 is turned off, because 3rd resistor R3 and the 4th resistance R4 partial pressure act on, turn on PMOS Q3, it is counter to drag electromotive force
Power input UB is flowed into by PMOS Q3 and PMOS Q1, drags electromotive force smaller due to now counter, so can't damage
Controller；
When the anti-voltage for dragging electromotive force is more than the 4th voltage-regulator diode D4 operating voltage, the 4th voltage-regulator diode D4 rises
To pressure stabilization function, PMOS Q4 gate voltage no longer changes, counter to drag the voltage of electromotive force to continue to increase, PMOS Q4 source electrode
Voltage is increasingly greater than its gate voltage, when difference reaches certain value, PMOS Q4 conductings, by PMOS Q3 source electrode and gate pole
Short circuit, PMOS Q3 shut-offs are so, counter to drag electromotive force no longer to flow to power input UB by PMOS Q3 and PMOS Q1,
So as to protect controller.
B, when on-vehicle battery normal mounting and microprocessor driven signal acquisition terminal EN output low levels, NMOS tube Q5
Gate voltage be equal to on-vehicle battery voltage, NMOS tube Q5 conductings, PMOS Q4 gate pole so, is exporting equivalent to ground connection
The voltage that end UBD produces a very little just can turn on PMOS Q4, so as to turn off PMOS Q3, prevent voltage from flowing backwards.
C, when on-vehicle battery normal mounting and microprocessor driven signal acquisition terminal EN output high level, triode Q2
Conducting, NMOS tube Q5 gate pole is equivalent to ground connection, therefore NMOS tube Q5 is turned off, such case with A situations, only when it is counter drag it is electronic
When gesture is more than the 4th voltage-regulator diode D4 operating voltage certain value, counnter attack drags electromotive force circuit 13 just to work, so as to protect
Controller.Therefore, it can be deduced that, if the 4th voltage-regulator diode D4 operating voltage is less than the ceiling voltage of on-vehicle battery,
During driven, counnter attack drag electromotive force circuit 13 may work, so as to influence the normal work of controller, therefore, selected the
Four voltage-regulator diode D4 operating voltage need to be more than on-vehicle battery ceiling voltage, and rule of thumb, the 4th voltage-regulator diode D4 can be with
Choose the voltage-regulator diode that operating voltage is 20V~27V.
It should be noted that in the present embodiment, the first voltage-regulator diode D1, the second voltage-regulator diode D2, the 3rd voltage stabilizing two
Pole pipe D3 and the 5th voltage-regulator diode D5 are arranged between the gate pole of metal-oxide-semiconductor and source electrode, to protect metal-oxide-semiconductor.
Further to optimize above-described embodiment, as shown in figure 3, filter circuit 14 can include：Pi type filter, electrolysis electricity
Hold C7 and the first filter branch, wherein, the first filter branch includes the ceramics of the 5th ceramic capacitor C5 and the 6th being connected in series
Capacitor C6；
The annexation of 14 each part of filter circuit is specific as follows：
First output end of the input connection reverse-connection preventing circuit 12 of pi type filter, the output end of pi type filter respectively with
The input of electrochemical capacitor C7 positive plate and the first filter branch connects, electrochemical capacitor C7 negative pole plate earthing, the first filter
The output head grounding of ripple branch road；
Output end of the common port of pi type filter, electrochemical capacitor C7 and the first filter branch as whole control circuit
UBD, for connecting the input of motor-drive circuit.
Specifically, pi type filter includes：
The second filter branch formed is connected in series by the first ceramic capacitor C1 and the second ceramic capacitor C2；
The 3rd filter branch formed is connected in series by the 3rd ceramic capacitor C3 and the 4th ceramic capacitor C4；
And inductance L1；
Inductance L1 one end connects the input of the second filter branch, and the inductance L1 other end connects the 3rd filter branch
Input, the output head grounding of the second filter branch, the output head grounding of the 3rd filter branch.
To sum up, the control circuit of motor drive power supply disclosed in the utility model, power supply controlable electric current 11 can be according to micro-
The break-make control command of processor output performs corresponding make-break operation, thus can electric motor of automobile in a dormant state when,
The power supply of Car's door controlling device is cut off, reduces the quiescent dissipation of Car's door controlling device；Reverse-connection preventing circuit 12 can break in reverse power connection
Path between switch power supply and motor-drive circuit, so as to effectively avoid the damage of the metal-oxide-semiconductor caused by reverse power connection
Situation；Counnter attack drag electromotive force circuit 13 can in hand switch car door, prevent it is counter drag electromotive force flow into controller, from
And controller is protected to be not damaged by.
Finally, it is to be noted that, herein, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between any this actual relation or order be present.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering including for nonexcludability, so that process, method, article or equipment including a series of elements not only include that
A little key elements, but also the other element including being not expressly set out, or also include for this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged
Except other identical element in the process including the key element, method, article or equipment being also present.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (10)
- A kind of 1. control circuit of motor drive power supply, it is characterised in that including：Power supply controlable electric current, the power input of the power supply controlable electric current are used to connect on-vehicle battery, and signal acquisition terminal is used for Microprocessor is connected, the signal acquisition terminal is used for the break-make control command for gathering the microprocessor output, so that the electricity Source controlable electric current performs corresponding make-break operation according to the break-make control command；For in reverse power connection, disconnecting the reverse-connection preventing circuit of path between the power supply and motor-drive circuit, the counnter attack The input for connecing circuit connects the first signal control terminal of the power supply controlable electric current, the control termination of the reverse-connection preventing circuit Ground；Electromotive force circuit, institute are dragged in the anti-counnter attack for dragging electromotive force to flow into controller in hand switch car door, preventing Stating counnter attack drags the control terminal of electromotive force circuit to connect the secondary signal control terminal of the power supply controlable electric current, and the counnter attack is dragged electronic The input of gesture circuit connects the second output end of the reverse-connection preventing circuit, and the counnter attack drags the output end of electromotive force circuit to connect The control terminal of the reverse-connection preventing circuit；Wherein, output end of the first output end of the reverse-connection preventing circuit as whole control circuit, for connecting the motor The input of drive circuit.
- 2. control circuit according to claim 1, it is characterised in that the power supply controlable electric current includes：First switch pipe, Second switch pipe, the first voltage-regulator diode, first resistor and second resistance；Power input of the input of the first switch pipe as the power supply controlable electric current, for connecting the vehicle mounted electric Pond, the control terminal of the first switch pipe connect the input of the second switch pipe by the second resistance, and described first The first resistor and first voltage-regulator diode are connected in parallel between the input and control terminal of switching tube, wherein, institute The negative electrode for stating the first voltage-regulator diode connects the input of the first switch pipe, the anode connection of first voltage-regulator diode The control terminal of the first switch pipe, the output end of the first switch pipe are believed as described the first of the power supply controlable electric current Number control terminal, connect the input of the reverse-connection preventing circuit；The signal acquisition terminal of the control terminal of the second switch pipe as the power supply controlable electric current, it is described micro- for connecting Processor, the output head grounding of the second switch pipe, wherein, the second switch pipe has been internally integrated two resistance.
- 3. control circuit according to claim 1, it is characterised in that the reverse-connection preventing circuit includes：3rd switching tube, Two voltage-regulator diodes, 3rd resistor and the 4th resistance；Input of the input of 3rd switching tube as the reverse-connection preventing circuit, connect the institute of the power supply controlable electric current State the first signal control terminal, the control terminal of the 3rd switching tube by the 4th resistance eutral grounding, the 3rd switching tube The 3rd resistor and second voltage-regulator diode are connected in parallel between output end and the control terminal of the 3rd switching tube, its In, the negative electrode of second voltage-regulator diode connects the output end of the 3rd switching tube, the sun of second voltage-regulator diode Pole connects the control terminal of the 3rd switching tube；The common port of the output end of 3rd switching tube, the negative electrode of second voltage-regulator diode and the 3rd resistor is made For first output end of the reverse-connection preventing circuit, for connecting the input of the motor-drive circuit；The common port of the anode of second voltage-regulator diode, the 3rd resistor and the 4th resistance, as the counnter attack Second output end of circuit is connect, connects the input that electromotive force circuit is dragged in the counnter attack.
- 4. control circuit according to claim 1, it is characterised in that the counnter attack drags electromotive force circuit to include：4th opens Guan Guan, the 5th switching tube, the 3rd voltage-regulator diode, the 4th voltage-regulator diode, the 5th voltage-regulator diode, the 5th resistance and the 6th electricity Resistance；The input of 4th switching tube drags the input of electromotive force circuit as the counnter attack, connects the reverse-connection preventing circuit The second output end, the output end of the 4th switching tube drags the output end of electromotive force circuit as the counnter attack, described in connection The control terminal of reverse-connection preventing circuit；The negative electrode of 3rd voltage-regulator diode connects the input of the 4th switching tube, and anode connects the 4th switching tube Control terminal；The input and the negative electrode of the 3rd voltage-regulator diode of one end connection the 4th switching tube of 5th resistance Common port, the other end of the 5th resistance are steady by the control terminal of the 6th resistance connection the 4th switching tube and the described 3rd Press the common port of the anode of diode；The input of 5th switching tube connects the common port of the 5th resistance and the 6th resistance, the 5th switching tube Output head grounding, the control terminal of the 5th switching tube drag the control terminal of electromotive force circuit to connect the power supply as the counnter attack The secondary signal control terminal of controlable electric current；The negative electrode of 5th voltage-regulator diode connects the control terminal of the 5th switching tube, plus earth；The negative electrode of 4th voltage-regulator diode connects the common port of the 5th resistance and the 6th resistance, plus earth.
- 5. control circuit according to claim 4, it is characterised in that the counnter attack drags electromotive force circuit also to include：Filtering Capacitor；One end of the filter condenser connects the input of the 5th switching tube, another termination of the filter condenser Ground.
- 6. control circuit according to claim 1, it is characterised in that the control circuit also includes filter circuit；The input of the filter circuit connects first output end of the reverse-connection preventing circuit, the output of the filter circuit The output end as whole control circuit is held, for connecting the input of the motor-drive circuit.
- 7. control circuit according to claim 6, it is characterised in that the filter circuit includes：Pi type filter, electrolysis Electric capacity and the first filter branch；The input of the pi type filter connects first output end of the reverse-connection preventing circuit, the pi type filter it is defeated Go out end to be connected with the positive plate of the electrochemical capacitor and the input of first filter branch respectively, the electrochemical capacitor Negative pole plate earthing, the output head grounding of first filter branch；The common port of the pi type filter, the electrochemical capacitor and first filter branch is as the defeated of whole control circuit Go out end, for connecting the input of the motor-drive circuit.
- 8. control circuit according to claim 7, it is characterised in that the pi type filter includes：Second filter branch, 3rd filter branch and inductance；One end of the inductance connects the input of second filter branch, other end connection the 3rd filter of the inductance The input of ripple branch road, the output head grounding of second filter branch, the output head grounding of the 3rd filter branch.
- 9. control circuit according to claim 8, it is characterised in that second filter branch includes the be connected in series One ceramic capacitor and the second ceramic capacitor；3rd filter branch includes the 3rd ceramic capacitor that is connected in series and the Four ceramic capacitors.
- 10. control circuit according to claim 7, it is characterised in that first filter branch includes what is be connected in series 5th ceramic capacitor and the 6th ceramic capacitor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720770800.0U CN206932160U (en) | 2017-06-28 | 2017-06-28 | A kind of control circuit of motor drive power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720770800.0U CN206932160U (en) | 2017-06-28 | 2017-06-28 | A kind of control circuit of motor drive power supply |
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| CN206932160U true CN206932160U (en) | 2018-01-26 |
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| CN201720770800.0U Active CN206932160U (en) | 2017-06-28 | 2017-06-28 | A kind of control circuit of motor drive power supply |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108539712A (en) * | 2018-04-10 | 2018-09-14 | 苏州南江乐博机器人有限公司 | A kind of robot power supply input control device and input guard method |
| CN109755928A (en) * | 2019-02-19 | 2019-05-14 | 深圳市科比特航空科技有限公司 | Anti-reverse electromotive force circuit and unmanned plane |
| CN110829375A (en) * | 2018-08-14 | 2020-02-21 | 操纵技术Ip控股公司 | Power input circuit with improved reverse polarity protection function |
| CN110880748A (en) * | 2019-10-08 | 2020-03-13 | 布法罗机器人科技（成都）有限公司 | Multi-motor back electromotive force discharge circuit and system for rehabilitation robot |
| CN111725795A (en) * | 2019-03-19 | 2020-09-29 | Trw有限公司 | Battery protection circuit |
| CN114337470A (en) * | 2022-01-04 | 2022-04-12 | 大陆汽车研发（重庆）有限公司 | Motor reverse rotation protection device and protection method thereof and motor driving system |
| CN115788216A (en) * | 2022-11-29 | 2023-03-14 | 重庆长安汽车股份有限公司 | Electric backdoor control circuit and control method |
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- 2017-06-28 CN CN201720770800.0U patent/CN206932160U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108539712A (en) * | 2018-04-10 | 2018-09-14 | 苏州南江乐博机器人有限公司 | A kind of robot power supply input control device and input guard method |
| CN110829375B (en) * | 2018-08-14 | 2023-02-28 | 操纵技术Ip控股公司 | Power input circuit with improved reverse polarity protection |
| CN110829375A (en) * | 2018-08-14 | 2020-02-21 | 操纵技术Ip控股公司 | Power input circuit with improved reverse polarity protection function |
| US20220021199A1 (en) * | 2018-08-14 | 2022-01-20 | Steering Solutions Ip Holding Corporation | Mitigation of microcontroller restart from post-failure shutdown condition |
| CN109755928A (en) * | 2019-02-19 | 2019-05-14 | 深圳市科比特航空科技有限公司 | Anti-reverse electromotive force circuit and unmanned plane |
| CN111725795A (en) * | 2019-03-19 | 2020-09-29 | Trw有限公司 | Battery protection circuit |
| CN111725795B (en) * | 2019-03-19 | 2024-02-02 | Trw有限公司 | Battery protection circuit |
| CN110880748A (en) * | 2019-10-08 | 2020-03-13 | 布法罗机器人科技（成都）有限公司 | Multi-motor back electromotive force discharge circuit and system for rehabilitation robot |
| CN110880748B (en) * | 2019-10-08 | 2021-12-07 | 布法罗机器人科技（成都）有限公司 | Multi-motor back electromotive force discharge system for rehabilitation robot |
| CN114337470A (en) * | 2022-01-04 | 2022-04-12 | 大陆汽车研发（重庆）有限公司 | Motor reverse rotation protection device and protection method thereof and motor driving system |
| CN114337470B (en) * | 2022-01-04 | 2024-01-30 | 大陆汽车研发（重庆）有限公司 | Motor reversal protection device, protection method thereof and motor driving system |
| CN115788216A (en) * | 2022-11-29 | 2023-03-14 | 重庆长安汽车股份有限公司 | Electric backdoor control circuit and control method |
| CN115788216B (en) * | 2022-11-29 | 2024-05-28 | 重庆长安汽车股份有限公司 | Electric back door control circuit and control method |
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Address after: 4 / F, building 1, No.14 Jiuxianqiao Road, Chaoyang District, Beijing 100020 Patentee after: Beijing Jingwei Hirain Technologies Co.,Inc. Address before: 8 / F, block B, No. 11, Anxiang Beili, Chaoyang District, Beijing 100101 Patentee before: Beijing Jingwei HiRain Technologies Co.,Ltd. |
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