CN202182129U - Drive circuit of clutch - Google Patents
Drive circuit of clutch Download PDFInfo
- Publication number
- CN202182129U CN202182129U CN2011203076470U CN201120307647U CN202182129U CN 202182129 U CN202182129 U CN 202182129U CN 2011203076470 U CN2011203076470 U CN 2011203076470U CN 201120307647 U CN201120307647 U CN 201120307647U CN 202182129 U CN202182129 U CN 202182129U
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- circuit
- electromagnetic coil
- clutch
- drive circuit
- igbt
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Abstract
The utility model relates to a drive circuit of a device, in particular to a drive circuit of a clutch, which comprises a rectification circuit, an electromagnetic coil L, a follow current circuit and an electromagnetic coil charging circuit, wherein the electromagnetic coil L is connected between the rectification circuit and the electromagnetic coil charging circuit in series, and the follow current circuit is connected with the electromagnetic coil L in parallel. The drive circuit realizes basic constant current driving to the clutch, reduces the requirement on the resistance, the tolerance current and the number of turns of the electromagnetic coil of the clutch, lowers the cost of the clutch, has low electromagnetic noise, realizes basic constant current driving on the clutch by adopting a diode and an IGBT (Insulated Gate Bipolar Translator) module with low cost, and has low driving cost and good compatibility.
Description
Technical field
The utility model relates to a kind of drive circuit of device, particularly a kind of drive circuit of clutch.
Background technique
Clutch is used for controlling washing machine washing and dewatering state switching in multiple occasion extensive use as using in the washing machine.General main electromagnetic coil, the slider of comprising of clutch, through electromagnetic coil energising and outage are realized slider on certain parts from and close state.And the method for driving of existing clutch mainly contains two kinds: wherein a kind of method for driving is with the electromagnetic coil that directly civil power is inserted clutch; Because civil power does not pass through any processing; Then this kind method for driving all has higher requirements to the resistance of clutch self, withstand current, electromagnetic coil number of turn etc.; Cause the clutch cost higher, owing to the electromagnetic coil of civil power without any processing access clutch, the electromagnetic noise of generation is also bigger simultaneously; Another kind of method for driving is to be direct current with the commercial power rectification earlier; Through inserting electromagnetic coil after the step-down,, problems such as the clutch electromagnetic noise is big have been solved then though reduced clutch self cost to drive clutch; But owing to relate to technological difficulties such as step-down, it is high to drive cost.
The model utility content
The technical problem that the utility model will solve provides a kind of drive circuit of clutch, is satisfying under the prerequisite of low-cost clutch, and it is low to drive cost, and the clutch electromagnetic noise is little.
The technological scheme of the utility model is:
A kind of drive circuit of clutch, wherein: comprise rectification circuit, electromagnetic coil, freewheeling circuit, electromagnetic coil charging circuit, electromagnetic coil is serially connected between rectification circuit and the electromagnetic coil charging circuit, and freewheeling circuit is parallelly connected with electromagnetic coil.
Preferably, described electromagnetic coil charging circuit the other end ground connection.
Preferably, described freewheeling circuit comprises diode, and the anode of diode is connected with electromagnetic coil charging circuit one end, and the negative electrode of diode is connected with rectification circuit output end.Under the situation that the electromagnetic coil charging circuit cuts out, electromagnetic coil carries out afterflow through diode.
Preferably, described electromagnetic coil charging circuit is IGBT (Insulated Gate Bipolar Transistor, an insulated gate bipolar transistor) module; Described IGBT module comprises IGBT, first divider resistance, IGBT drive circuit, control circuit; The collector electrode of IGBT is connected with electromagnetic coil one end, its grounded-emitter connection, and its gate pole is connected with first divider resistance, one end; The first divider resistance the other end is connected with the IGBT drive circuit, and the IGBT drive circuit is connected with control circuit again.The IGBT drive circuit charges to the input capacitance of IGBT, when reaching its threshold voltage, and the IGBT conducting, promptly the electromagnetic coil charging circuit is open-minded, and electromagnetic coil charges through IGBT.The IGBT drive circuit makes the gate voltage of IGBT be lower than its threshold voltage to the input capacitance discharge of IGBT, and IGBT ends, and promptly the electromagnetic coil charging circuit cuts out, and electromagnetic coil carries out afterflow through freewheeling circuit.Control circuit is controlled the IGBT drive circuit, realizes that through the controlling and driving circuit IGBT switches between conducting and the state that ends.
Preferably; Described IGBT drive circuit comprises+V power supply, a NPN type triode; The collector electrode of the one NPN type triode is connected with+V power output end, and its base stage is connected with+V power output end through second divider resistance, and its emitter is connected with first divider resistance.
Preferably, described IGBT drive circuit also comprises the positive-negative-positive triode, and the emitter of positive-negative-positive triode is connected with first divider resistance, its grounded collector, and its base stage is connected with+V power output end through second divider resistance.
Preferably; Described control circuit comprises pulse source, the 3rd divider resistance, the 2nd NPN type triode; Pulse source is connected with the 3rd divider resistance; The base stage of the 2nd NPN type triode is connected with the 3rd divider resistance output terminal, its grounded-emitter connection, and its collector electrode is connected with+V power output end through second divider resistance.
Preferably, also comprise first protective circuit, first protective circuit comprises the 4th resistance, and the 4th resistance string is connected between IGBT gate pole and the emitter.In the charging process of the gate pole of IGBT, resistance can play the dividing potential drop effect, and in the discharge process of the gate pole of IGBT, the 4th resistance can play the acceleration discharge process.
Preferably, also comprise second protective circuit, second protective circuit comprises the 5th resistance, and the 5th resistance string is connected between the base stage and emitter of the 2nd NPN type triode.The 5th resistance is used to prevent that the base stage of the 2nd NPN type triode is unsettled is subject to disturb and produces misoperation.
Preferably, described pulse source is pulse-width modulation PWM (Pulse-width modulation) circuit.Adopt the pulse-width modulation PWM mode to regulate the conducting of IGBT and the time width of cut-off state, thereby realize the electric current of electromagnetic coil is controlled, can make the current ripples of electromagnetic coil littler, more convergence constant current.
The utility model is described+and the V power supply is a DC electrical source.
The electric current of the electromagnetic coil of the utility model charging always with these two states of afterflow in switch, electromagnetic coil is used the inductance value of self, has realized the basic constant-current driving to clutch.
The implementation result of the utility model and existing technology relatively
Working principle of the utility model and advantage: the utility model adopts the diode continuousing flow circuit and the electromagnetic coil charging circuit be made up of the IGBT module control effectively to the electric current of electromagnetic coil; The electric current that is electromagnetic coil switches in afterflow and these two states that discharge always; Electromagnetic coil is used the inductance value of self; Realized basic constant-current driving to clutch; Reduced the requirement of resistance for clutch self, withstand current, the electromagnetic coil number of turn, reduced the cost of clutch, the electromagnetic noise of generation is little.Adopt cheaply diode and IGBT module to realize the basic constant-current driving to clutch simultaneously, it is low to drive cost.
The electromagnetic coil of controlling for different VDCs with respect to existing clutch method for driving simultaneously needs design driven circuit again; Poor compatibility; The utility model adopts the pulse-width modulation PWM mode to regulate the electric current on the electromagnetic coil L; Select the dutycycle of PWM can realize basic constant-current driving to the electromagnetic coil of different VDC controls to clutch, compatible good.
Description of drawings
Accompanying drawing 1 is a kind of driver module block diagram of existing technology;
Accompanying drawing 2 is driver module block diagrams of another kind of existing technology;
Accompanying drawing 3 is driver module block diagrams of the utility model;
Accompanying drawing 4 is electrical block diagrams of the utility model embodiment;
Embodiment
Like Fig. 3 and shown in Figure 4; A kind of drive circuit of clutch; Comprise rectification circuit (not shown), electromagnetic coil L, freewheeling circuit, electromagnetic coil charging circuit; Electromagnetic coil L is serially connected between rectification circuit and the electromagnetic coil charging circuit, and freewheeling circuit is parallelly connected with electromagnetic coil L, described electromagnetic coil charging circuit the other end ground connection.
Rectification circuit is meant civil power is rectified into direct current DC through rectifier bridge or other rectifying devices, do not add at this and give unnecessary details.
Described freewheeling circuit comprises diode D1, and the anode of diode D1 is connected with electromagnetic coil charging circuit one end, and the negative electrode of diode D1 is connected with rectification circuit output end.
Described electromagnetic coil charging circuit is the IGBT module; The IGBT module comprises IGBT Q6, the first divider resistance R23, IGBT Q6 drive circuit, control circuit; The collector electrode C of IGBT Q6 is connected with electromagnetic coil L one end, its emitter E ground connection, and its gate pole G is connected with the first divider resistance R23, one end; The first divider resistance R23 the other end is connected with IGBT Q6 drive circuit, and IGBT Q6 drive circuit is connected with control circuit again.
Described IGBT Q6 drive circuit comprises+15V power supply, a NPN type triode Q4; The collector electrode C of the one NPN type triode Q4 is connected with+15V power output end; Its base stage B is connected with+15V power output end through the second divider resistance R22, and its emitter E is connected with the first divider resistance R23.
Described IGBT Q6 drive circuit comprises positive-negative-positive triode Q5, and the emitter E of positive-negative-positive triode Q5 is connected with the first divider resistance R23, its collector electrode C ground connection, and its base stage B is connected with+15V power output end through the second divider resistance R22.
Described control circuit; Control circuit comprises pulse source S, the 3rd divider resistance R20, the 2nd NPN type triode Q3; Pulse source S is connected with the 3rd divider resistance R20; The base stage B of the 2nd NPN type triode Q3 is connected with the 3rd divider resistance R20 output terminal, its emitter E ground connection, and its collector electrode C is connected with+15V power output end through the second divider resistance R22.
Also comprise first protective circuit, first protective circuit comprises that the 4th resistance R 24, the four resistance R 24 are serially connected between the gate pole G and emitter E of IGBT Q6.
Also comprise second protective circuit, second protective circuit comprises that the 5th resistance R 21, the five resistance R 21 are serially connected between the base stage B and emitter E of the 2nd NPN type triode Q3.
Described pulse source S is a pulse-width modulation PWM circuit (not shown).
Further explain the working principle of the utility model through present embodiment: pulse-width modulation PWM circuit output pulse signal; When pulse signal when being low level, the 2nd NPN type triode Q3 ends, a NPN type triode Q4 conducting; And to the input capacitance charging of the gate pole G of IGBT Q6; Make its threshold voltage that meets and exceeds IGBT Q6, IGBT Q6 conducting, electromagnetic coil L begins charging through the IGBT Q6 of ground connection.
When pulse signal is high level; The 2nd NPN type triode Q3 conducting; The one NPN type triode Q4 ends; The input capacitance of the gate pole G of IGBT Q6 is discharged through first discharge circuit be made up of the first divider resistance R23 and positive-negative-positive triode Q5 and by second discharge circuit that the 4th resistance R 24 is formed, and positive-negative-positive triode Q5 conducting is when the voltage drop of IGBT Q6 input capacitance is low to moderate the threshold voltage of IGBT Q6 when following; IGBT Q6 ends, and electromagnetic coil L electric current is through diode D1 afterflow.
The electric current of electromagnetic coil L switches in afterflow and these two states that discharge always; Simultaneously because electromagnetic coil L is an inductance; Make the electric current that after the dutycycle of pwm pulse is stablized, flows through electromagnetic coil L be tending towards constant, promptly realized basic constant-current driving clutch.
The utility model adopts the pulse-width modulation PWM mode to regulate the electric current on the electromagnetic coil L, selects the dutycycle of PWM can realize the basic constant-current driving to clutch to the electromagnetic coil of different VDC controls, and is compatible good.
The above only is the preferred implementation of the utility model; Should be understood that; For the person of ordinary skill of the art; Under the prerequisite that does not break away from the utility model principle, described protective circuit is made some improvement and retouching, such as equivalence replacement with electronic components such as relay, IGBT, metal-oxide-semiconductor, triode pipes; The equivalence of IGBT, metal-oxide-semiconductor, triode model replacement, the resistance of the number of divider resistance and combination, divider resistance is changed etc., these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (10)
1. the drive circuit of a clutch; It is characterized in that: comprise rectification circuit, electromagnetic coil (L), freewheeling circuit, electromagnetic coil charging circuit; Electromagnetic coil (L) is serially connected between rectification circuit and the electromagnetic coil charging circuit, and freewheeling circuit is parallelly connected with electromagnetic coil (L).
2. the drive circuit of a kind of clutch as claimed in claim 1 is characterized in that: described electromagnetic coil charging circuit the other end ground connection.
3. according to claim 1 or claim 2 a kind of drive circuit of clutch; It is characterized in that: described freewheeling circuit comprises diode (D1); The anode of diode (D1) is connected with electromagnetic coil charging circuit one end, and the negative electrode of diode (D1) is connected with rectification circuit output end.
4. according to claim 1 or claim 2 a kind of drive circuit of clutch; It is characterized in that: described electromagnetic coil charging circuit is the IGBT module; Described IGBT module comprises IGBT (Q6), first divider resistance (R23), IGBT (Q6) drive circuit, control circuit; The collector electrode of IGBT (Q6) is connected with electromagnetic coil (L) end, its grounded-emitter connection, and its gate pole is connected with first divider resistance (R23) end; First divider resistance (R23) the other end is connected with IGBT (Q6) drive circuit, and IGBT (Q6) drive circuit is connected with control circuit again.
5. the drive circuit of a kind of clutch as claimed in claim 4; It is characterized in that: described IGBT (Q6) drive circuit comprises+V power supply, a NPN type triode (Q4); The collector electrode of the one NPN type triode (Q4) is connected with+V power output end; Its base stage is connected with+V power output end through second divider resistance (R22), and its emitter is connected with first divider resistance (R23).
6. the drive circuit of a kind of clutch as claimed in claim 4; It is characterized in that: described IGBT (Q6) drive circuit also comprises positive-negative-positive triode (Q5); The emitter of positive-negative-positive triode (Q5) is connected with first divider resistance (R23); Its grounded collector, its base stage is connected with+V power output end through second divider resistance (R22).
7. the drive circuit of a kind of clutch as claimed in claim 4; It is characterized in that: described control circuit comprises pulse source (S), the 3rd divider resistance (R20), the 2nd NPN type triode (Q3); Pulse source (S) is connected with the 3rd divider resistance (R20); The base stage of the 2nd NPN type triode (Q3) is connected with the 3rd divider resistance (R20) output terminal, its grounded-emitter connection, and its collector electrode is connected with+V power output end through second divider resistance (R22).
8. the drive circuit of a kind of clutch as claimed in claim 4, it is characterized in that: also comprise first protective circuit, first protective circuit comprises the 4th resistance (R24), and the 4th resistance (R24) is serially connected between the gate pole and emitter of IGBT (Q6).
9. the drive circuit of a kind of clutch as claimed in claim 7, it is characterized in that: also comprise second protective circuit, second protective circuit comprises the 5th resistance (R21), and the 5th resistance (R21) is serially connected between the base stage and emitter of the 2nd NPN type triode (Q3).
10. the drive circuit of a kind of clutch as claimed in claim 7, it is characterized in that: described pulse source (S) is the pulse-width modulation PWM circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203076470U CN202182129U (en) | 2011-08-22 | 2011-08-22 | Drive circuit of clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203076470U CN202182129U (en) | 2011-08-22 | 2011-08-22 | Drive circuit of clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202182129U true CN202182129U (en) | 2012-04-04 |
Family
ID=46175167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203076470U Expired - Lifetime CN202182129U (en) | 2011-08-22 | 2011-08-22 | Drive circuit of clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202182129U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108173467A (en) * | 2018-02-24 | 2018-06-15 | 河南工程学院 | Circuit for controlling motor and control system |
-
2011
- 2011-08-22 CN CN2011203076470U patent/CN202182129U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108173467A (en) * | 2018-02-24 | 2018-06-15 | 河南工程学院 | Circuit for controlling motor and control system |
| CN108173467B (en) * | 2018-02-24 | 2019-10-08 | 河南工程学院 | Circuit for controlling motor and control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120404 |
|
| CX01 | Expiry of patent term |