CN106505919A - Inexpensive brushless motor booster circuit - Google Patents
Inexpensive brushless motor booster circuit Download PDFInfo
- Publication number
- CN106505919A CN106505919A CN201611263576.2A CN201611263576A CN106505919A CN 106505919 A CN106505919 A CN 106505919A CN 201611263576 A CN201611263576 A CN 201611263576A CN 106505919 A CN106505919 A CN 106505919A
- Authority
- CN
- China
- Prior art keywords
- brushless motor
- circuit
- resistance
- battery pack
- control circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
- H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a kind of inexpensive brushless motor booster circuit; including the brushless motor that battery pack is connected with battery pack; control circuit, booster circuit, drive circuit and open circuit detection protection circuit is additionally provided between battery pack and brushless motor; the input of control circuit is connected to the positive pole of battery pack; the boosting rectifier control end of control circuit is connected with booster circuit; the drive signal end of control circuit is connected with brushless motor by drive circuit, and open circuit detection protection circuit is connected with the detection signal end of control circuit.The structure setting of the present invention is reasonable; the electronic devices and components of feedback voltage detection can effectively be reduced; so as to can be effectively cost-effective; reach preferable control effect; improve battery voltage working range simultaneously, it is also ensured that brushless motor work is gentle stable, also there is open circuit detection protection circuit; can effectively ensure that brushless motor stability in use and reliability, strong applicability and practicality are good.
Description
Technical field
The invention belongs to brushless motor field of circuit technology, and in particular to a kind of inexpensive brushless motor booster circuit.
Background technology
Conventional brushless motor has substantially positive pole, negative pole and adjusts control end three-polar output, can be adjusted by control end and be accounted for
Empty ratio adjusts voltage swing mode to change the size of rotating speed, and lower-cost brushless motor only has positive and negative end defeated
Go out, have no regulation control end.And using the dutycycle mode of cathode voltage is changed the method that changes brushless motor, adjustable
Scope is very few, and error is larger.So applicability and practicality are restricted.
Content of the invention
It is an object of the invention to provide the inexpensive brushless motor boosting that a kind of structure setting is reasonable and stability in use is good
Circuit, can adjust the rotating speed of brushless motor, by way of changing positive pole input voltage so as to reach preferable control effect.
The technical scheme for realizing the object of the invention is a kind of inexpensive brushless motor booster circuit, including battery pack and institute
The brushless motor that battery pack is connected is stated, and control circuit is additionally provided between the battery pack and the brushless motor, rises piezoelectricity
Road, drive circuit and open circuit detection protection circuit, the input of the control circuit are connected to the positive pole of battery pack, the control
The boosting rectifier control end of circuit is connected with the booster circuit, and the drive signal end of the control circuit is by drive circuit and institute
State brushless motor to be connected, the open circuit detection protection circuit is connected with the detection signal end of the control circuit.
The booster circuit include the second unilateral diode, inductance, the 4th unilateral diode, the second electric capacity, metal-oxide-semiconductor,
Nine resistance and the tenth resistance, the positive pole of second unilateral diode is connected with battery pack, second unilateral diode
By inductance connection on the positive pole of the 4th unilateral diode, the negative pole of the 4th unilateral diode is connected to brushless electricity to negative pole
The positive terminal of machine, the drain electrode of the metal-oxide-semiconductor are connected on the tie point of inductance and the 4th unilateral diode, the source of the metal-oxide-semiconductor
Pole ground connection and grid is connected to the boosting rectifier control end of control circuit by the 9th resistance, the tenth resistance is connected to metal-oxide-semiconductor
Between grid and source electrode, the positive terminal of second electric capacity is connected to the negative pole of the negative pole and the second electric capacity of the 4th unilateral diode
End is connected on the source electrode of metal-oxide-semiconductor.
The open circuit detection protection circuit includes the 13rd resistance, the 14th resistance and the 15th resistance, the described 13rd
After resistance and the 14th resistant series, one end is connected to the negative pole other end ground connection of brushless motor, the 15th resistance
One end is connected to the detection signal end that the other end on the tie point of the 13rd resistance and the 14th resistance is connected to control circuit.
The drive circuit includes triode, the 11st resistance and the 12nd resistance, the colelctor electrode connection of the triode
In negative pole and the grounded emitter of brushless motor, the base stage of the triode is connected to the drive of control circuit by the 11st resistance
Dynamic signal end, the 12nd resistance are connected between the base stage of triode and emitter stage.
The control circuit includes control chip, the 3rd unilateral diode, the first electric capacity and touch key switch, described the
It is in parallel with battery pack after three unilateral diodes and the first capacitances in series and the positive pole of the 3rd unilateral diode is connected to battery pack
Positive pole on, the power end of the control chip is connected on the tie point of the 3rd unilateral diode and the first electric capacity, described light
Touch key switch is connected between the INTO pins of control chip and ground wire.
The metal-oxide-semiconductor is N-channel MOS pipe.
The triode is NPN type triode.
The present invention has positive effect：Rationally, there is no output end feedback in its booster circuit to the structure setting of the present invention
Voltage detecting, such that it is able to effectively reduce the electronic devices and components of feedback voltage detection, so as to can be effectively cost-effective, while
Which can adjust the rotating speed of brushless motor in the way of changing positive pole input voltage, so as to reach preferable control effect, while
Improve battery voltage working range, it is also ensured that brushless motor work is gentle stable, also there is open circuit detection protection circuit,
Can effectively ensure that brushless motor stability in use and reliability, strong applicability and practicality are good.
Description of the drawings
In order that present disclosure is more likely to be clearly understood, below according to specific embodiment and accompanying drawing is combined, right
The present invention is described in further detail, wherein：
Fig. 1 is the electrical block diagram of the present invention.
Specific embodiment
（Embodiment 1）
Fig. 1 shows a kind of specific embodiment of the present invention, and wherein Fig. 1 is the electrical block diagram of the present invention.
See Fig. 1, a kind of inexpensive brushless motor booster circuit, including the nothing that battery pack 1 is connected with the battery pack 1
Brush motor 2, be additionally provided between the battery pack 1 and the brushless motor 2 control circuit 3, booster circuit 4, drive circuit 5 and
Open circuit detection protection circuit 6, the input of the control circuit 3 are connected to the positive pole of battery pack 1, the liter of the control circuit 3
Pressure control end is connected with the booster circuit 4, and the drive signal end of the control circuit 3 is by drive circuit 5 and the nothing
Brush motor 2 is connected, and the open circuit detection protection circuit 6 is connected with the detection signal end of the control circuit 3.
The booster circuit 4 include the second unilateral diode D2, inductance L1, the 4th unilateral diode D4, the second electric capacity C2,
Metal-oxide-semiconductor Q1, the 9th resistance R9 and the tenth resistance R10, the positive pole of the second unilateral diode D2 is connected with battery pack 1, institute
The negative pole for stating the second unilateral diode D2 is connected on the positive pole of the 4th unilateral diode D4 by inductance L1, and the described 4th is unidirectional
The negative pole of diode D4 is connected to the positive terminal of brushless electric machine 2, and it is unidirectional with the 4th that the drain electrode of the metal-oxide-semiconductor Q1 is connected to inductance L1
On the tie point of diode D4, the source ground of the metal-oxide-semiconductor Q1 and grid is connected to control circuit 3 by the 9th resistance R9
Boosting rectifier control end, the tenth resistance R10 are connected between the grid and source electrode of metal-oxide-semiconductor Q1, the positive pole of the second electric capacity C2
The negative pole end of negative pole and the second electric capacity that end is connected to the 4th unilateral diode D4 is connected on the source electrode of metal-oxide-semiconductor.With common
Booster circuit is different, and the booster circuit does not have the detection of output end feedback voltage.If being detected using output end feedback voltage, i.e.,
Control chip U2 needs the presence of AD detection functions, and the control chip price that there is AD detection functions is of a relatively high, is to save into
This, is not therefore adopted usual way feedback regulation, and is processed by the way of newer.When a certain pattern is selected, PWN ends export
One fixed dutycycle, makes electric capacity C2 two ends boost to higher voltage；When BT both end voltages are reduced to certain value,
When Vdd terminal detects lower voltage value, the dutycycle at PWN ends also no longer changes, and keeps fixed value；When BT both end voltages rise superb
When crossing certain value, Vdd terminal detects high voltage, and the dutycycle that will be exported PWN ends is adjusted less, so as to ensure electric capacity C2 two ends
Voltage without departing from certain limit.Because the magnitude of voltage relative Repeat of battery BT two ends change less, therefore electric capacity C2 two ends
Magnitude of voltage excursion less, can make brushless motor work smooth variation.
The open circuit detection protection circuit 6 includes the 13rd resistance R13, the 14th resistance R14 and the 15th resistance R15,
After the 13rd resistance R13 is connected with the 14th resistance R14, one end is connected to another termination of negative pole of brushless motor 2
Ground, one end of the 15th resistance R15 is connected to the other end on the tie point of the 13rd resistance R13 and the 14th resistance R14
It is connected to the detection signal end of control circuit 3.The open circuit detection protection circuit of resistance R13, R14, R5 composition, it is ensured that circuit energy
Normal work.When brushless motor is in the state of open circuit, if there is no the protection circuit, electric capacity C2 both end voltages will continue
Certain value is charged to, will appear from afterwards damaging.Under brushless motor normal condition, it is powered moment, electric current is by motor to resistance R13
With R14 branch roads, DETC ends are made to judge that brushless motor is normal for high level, i.e. control chip, you can to enter normal mode of operation；When
Under brushless motor open-circuit condition, because R13 and R14 no currents pass through, DETC ends judge brushless motor for low level, i.e. control chip
Open circuit, will not enter normal operating conditions.
The drive circuit 5 includes triode Q2, the 11st resistance R11 and the 12nd resistance R12, the triode Q2's
Colelctor electrode is connected to the negative pole of brushless motor 2 and grounded emitter, and the base stage of the triode Q2 is connected by the 11st resistance R11
The drive signal end of control circuit 3 is connected on, the 12nd resistance R12 is connected between base stage and the emitter stage of triode Q2.
The control circuit 3 includes control chip U2, the 3rd unilateral diode D3, the first electric capacity C1 and touch key switch
SW, the 3rd unilateral diode be in parallel with battery pack after the first capacitances in series and the positive pole of the 3rd unilateral diode is connected
On the positive pole of battery pack, the power end of the control chip is connected to the tie point of the 3rd unilateral diode and the first electric capacity
On, the touch key switch is connected between the INTO pins of control chip and ground wire.
The metal-oxide-semiconductor is N-channel MOS pipe.
The triode is NPN type triode.
The battery of lower voltage value is powered to control chip U2 by diode D3, and another branch road is given by diode D2
The booster circuit of inductance L1, diode D4, FET Q1 and electrochemical capacitor C2 composition is powered, by changing the dutycycle of PWN
BT two ends low voltage can be boosted to the higher voltage in electric capacity C2 two ends, then FAN ends high level be provided by control chip, open
Triode Q2 is opened, so as to drive brushless motor.
Because brushless motor needs certain startup voltage, when cell voltage BT values are relatively low, it is impossible to make brushless motor normal
Start, therefore when brushless motor starts, need first to heighten the dutycycle at PWN ends, make brushless motor first start from high voltage,
After the startup of 2S, then the dutycycle of normal mode of operation is reduced to, this process can make brushless motor in battery BT voltage models
Enclose interior all normal works.
Rationally, there is no the detection of output end feedback voltage in its booster circuit to the structure setting of the present invention, such that it is able to effective
The electronic devices and components for reducing feedback voltage detection, so as to can be effectively cost-effective, while which can change positive pole input electricity
The rotating speed of the adjustable brushless motor of the mode of pressure, so as to reach preferable control effect, while improve battery voltage work model
Enclose, it is also ensured that brushless motor work is gentle stable, also there is open circuit detection protection circuit, can effectively ensure brushless motor
Stability in use and reliability, strong applicability and practicality are good.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not right
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no need to be exhaustive to all of embodiment.And these
Belong to the present invention connotation extended obvious change or variation still fall within protection scope of the present invention.
Claims (7)
1. a kind of inexpensive brushless motor booster circuit, including the brushless motor that battery pack is connected with the battery pack, which is special
Levy and be：Control circuit, booster circuit, drive circuit and open circuit inspection is additionally provided between the battery pack and the brushless motor
Survey protection circuit, the input of the control circuit is connected to the positive pole of battery pack, the boosting rectifier control end of the control circuit with
The booster circuit is connected, and the drive signal end of the control circuit is connected with the brushless motor by drive circuit,
The open circuit detection protection circuit is connected with the detection signal end of the control circuit.
2. inexpensive brushless motor booster circuit according to claim 1, it is characterised in that：The booster circuit includes
Two unilateral diodes, inductance, the 4th unilateral diode, the second electric capacity, metal-oxide-semiconductor, the 9th resistance and the tenth resistance, described second is single
It is connected to the positive pole of diode with battery pack, the negative pole of second unilateral diode passes through inductance connection the 4th unidirectional two
On the positive pole of pole pipe, the negative pole of the 4th unilateral diode is connected to the positive terminal of brushless electric machine, and the drain electrode of the metal-oxide-semiconductor connects
It is connected on the tie point of inductance and the 4th unilateral diode, the source ground and grid of the metal-oxide-semiconductor are connected by the 9th resistance
At the boosting rectifier control end of control circuit, the tenth resistance is connected between the grid of metal-oxide-semiconductor and source electrode, second electric capacity
Positive terminal is connected to the negative pole end of the negative pole and the second electric capacity of the 4th unilateral diode and is connected on the source electrode of metal-oxide-semiconductor.
3. inexpensive brushless motor booster circuit according to claim 2, it is characterised in that：The open circuit detection protection electricity
Road includes the 13rd resistance, the 14th resistance and the 15th resistance, after the 13rd resistance and the 14th resistant series
One end is connected to the negative pole other end ground connection of brushless motor, and one end of the 15th resistance is connected to the 13rd resistance and the tenth
On the tie point of four resistance, the other end is connected to the detection signal end of control circuit.
4. inexpensive brushless motor booster circuit according to claim 3, it is characterised in that：The drive circuit includes three
Pole pipe, the 11st resistance and the 12nd resistance, the colelctor electrode of the triode are connected to the negative pole and emitter stage of brushless motor and connect
Ground, the base stage of the triode are connected to the drive signal end of control circuit by the 11st resistance, and the 12nd resistance connects
It is connected between the base stage of triode and emitter stage.
5. inexpensive brushless motor booster circuit according to claim 4, it is characterised in that：The control circuit includes controlling
Coremaking piece, the 3rd unilateral diode, the first electric capacity and touch key switch, the 3rd unilateral diode and the first capacitances in series
It is in parallel with battery pack afterwards and the positive pole of the 3rd unilateral diode is connected on the positive pole of battery pack, the power supply of the control chip
End is connected on the tie point of the 3rd unilateral diode and the first electric capacity, and the touch key switch is connected to control chip
Between INTO pins and ground wire.
6. inexpensive brushless motor booster circuit according to claim 5, it is characterised in that：The metal-oxide-semiconductor is N-channel
Metal-oxide-semiconductor.
7. inexpensive brushless motor booster circuit according to claim 6, it is characterised in that：The triode is NPN type
Triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611263576.2A CN106505919A (en) | 2016-12-30 | 2016-12-30 | Inexpensive brushless motor booster circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611263576.2A CN106505919A (en) | 2016-12-30 | 2016-12-30 | Inexpensive brushless motor booster circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106505919A true CN106505919A (en) | 2017-03-15 |
Family
ID=58334853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611263576.2A Pending CN106505919A (en) | 2016-12-30 | 2016-12-30 | Inexpensive brushless motor booster circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106505919A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109391146A (en) * | 2017-08-07 | 2019-02-26 | 广东金莱特电器股份有限公司 | Low cost high power booster circuit electronic control multi gear regulating circuit |
| CN112713771A (en) * | 2020-12-23 | 2021-04-27 | 浙江飞越机电有限公司 | Power supply circuit of direct-current brushless motor with ultra-wide input voltage |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080317445A1 (en) * | 2007-06-13 | 2008-12-25 | Sanyo Electric Co., Ltd. | Motor Speed Control Circuit |
| CN101656506A (en) * | 2008-08-20 | 2010-02-24 | 鸿富锦精密工业（深圳）有限公司 | Motor driving system |
| CN201708697U (en) * | 2010-05-31 | 2011-01-12 | 比亚迪股份有限公司 | Direct-current power source switching device |
| CN104953908A (en) * | 2014-03-25 | 2015-09-30 | 翌能科技股份有限公司 | DC motor control method and device |
| CN206349952U (en) * | 2016-12-30 | 2017-07-21 | 广东金莱特电器股份有限公司 | Inexpensive brushless motor booster circuit |
-
2016
- 2016-12-30 CN CN201611263576.2A patent/CN106505919A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080317445A1 (en) * | 2007-06-13 | 2008-12-25 | Sanyo Electric Co., Ltd. | Motor Speed Control Circuit |
| CN101656506A (en) * | 2008-08-20 | 2010-02-24 | 鸿富锦精密工业（深圳）有限公司 | Motor driving system |
| CN201708697U (en) * | 2010-05-31 | 2011-01-12 | 比亚迪股份有限公司 | Direct-current power source switching device |
| CN104953908A (en) * | 2014-03-25 | 2015-09-30 | 翌能科技股份有限公司 | DC motor control method and device |
| CN206349952U (en) * | 2016-12-30 | 2017-07-21 | 广东金莱特电器股份有限公司 | Inexpensive brushless motor booster circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109391146A (en) * | 2017-08-07 | 2019-02-26 | 广东金莱特电器股份有限公司 | Low cost high power booster circuit electronic control multi gear regulating circuit |
| CN109391146B (en) * | 2017-08-07 | 2024-03-29 | 广东金莱特电器股份有限公司 | Electronic control multi-gear voltage regulating circuit for low-cost high-power booster circuit |
| CN112713771A (en) * | 2020-12-23 | 2021-04-27 | 浙江飞越机电有限公司 | Power supply circuit of direct-current brushless motor with ultra-wide input voltage |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170315 |
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| RJ01 | Rejection of invention patent application after publication |