CN207947731U - A kind of brush motor brake control circuit and motor - Google Patents
A kind of brush motor brake control circuit and motor Download PDFInfo
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- CN207947731U CN207947731U CN201820302620.4U CN201820302620U CN207947731U CN 207947731 U CN207947731 U CN 207947731U CN 201820302620 U CN201820302620 U CN 201820302620U CN 207947731 U CN207947731 U CN 207947731U
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Abstract
A kind of brush motor brake control circuit of the utility model offer and motor, the circuit include：Controller, PWM driving chips and motor circuit.Security risk existing in the prior art can be eliminated under the requirement for meeting existing safety standard, realize the safe spare of motor brake control.With it is in the prior art have brush electromagnetic brush vehicle compared with, be not in because component exception caused by motor can not by light current switch close the case where, the embodiment of the utility model applicability is stronger, safer.And actual test finds that this double drive chip adds the mode of 5 field-effect tube more to stablize with reliably, and field-effect tube is hardly damaged.The utility model can eliminate security risk existing in the prior art under the requirement for meeting existing safety standard, realize the safe spare of motor brake control.
Description
Technical field
The utility model is related to brush motor control technology field, more particularly to a kind of brush motor brake control circuit and
Motor.
Background technology
Common are brush motor brake at present can be divided into two kinds of mechanical braking brake and electromagnetic brake, wherein mechanical braking
Brake mainly realizes brake by brake assemblies braking, and purely mechanic control failure rate is low, but brake assemblies can account in complete machine
With much room, it is excessive to may result in machine volume.
Electromagnetic brake institute is functional all to be concentrated on one piece of wiring board, and occupied space is smaller, and use is more flexible, if but
On wiring board brake component damage or failure when, may result in can not brake in addition operating personnel can not by turn off electronics
Switch close complete machine operation as a result, bringing some potential safety problems to using.Fig. 1 is one kind common in the art
There is brush electromagnetic brake circuit diagram.It is mainly made of microcontroller and two field-effect tube, and one is startup field-effect tube,
Another is brake field-effect tube, and microcontroller starts field-effect by adjusting both ends PWM wave according to switch order come indirect control
Pipe and brake field-effect tube.But due to an only startup field-effect tube Q2 for electromagnetic brake control complete machine break-make in Fig. 1, if
Start field-effect tube Q2 to be abnormal, short circuit occur, then once being inserted into, complete machine will be run battery pack, be not necessarily to the unlatching of personnel
Electronic switch.
Therefore, how a kind of motor brake control technology is provided, it is hidden to eliminate safety present in existing electromagnetic brake technology
Suffer from, is those skilled in the art's technical problem urgently to be resolved hurrily.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of brush motor brake control circuit and motor, it can
Security risk existing in the prior art is eliminated, realizes the safe spare of motor brake control.Its concrete scheme is as follows：
On the one hand, the utility model provides a kind of brush motor brake control circuit, including：Controller, PWM driving chips
And motor circuit；
The motor circuit, including：First controllable electronic switch, the second controllable electronic switch, third controllable electronic switch；
First controllable electronic switch, second controllable electronic switch, the third controllable electronic switch electrically connect
It is connected to the first electrical point；
The other end of first controllable electronic switch is connected to the anode of positive pole, motor, for controlling the electricity
Machine brakes；
The other end of second controllable electronic switch is connected to the cathode of motor, as spare brake；
The other end of the third controllable electronic switch is used by second electrically one end of point and first resistor electric connection
In the opening and closing for controlling the motor circuit；
The other end of the first resistor is electrically put by third and is connect with one end of second resistance；The second resistance
The other end is grounded；Described first electrical point passes through 3rd resistor and is grounded；The power cathode ground connection；
The controller connects the PWM driving chips, and the PWM driving chips connect first controlled electron and open
Pass, second controllable electronic switch and the third controllable electronic switch.
Preferably,
Described first electrical point is connect with the controller.
Preferably,
Described second electrical point is connect with the controller.
Preferably,
Electrically point is connect the third with the controller.
Preferably,
First controllable electronic switch, including：First sub- controllable electronic switch of parallel connection, the second sub- controlled electron are opened
It closes, and the first sub- controllable electronic switch is connect with the PWM driving chips respectively with the second sub- controllable electronic switch.
Preferably,
The PWM driving chips, including：First PWM driving chips, the 2nd PWM driving chips；
The first PWM driving chips are drivingly connected the first sub- controllable electronic switch and the described second sub- controlled electron
Any of switch, and it is drivingly connected the second controllable electronic switch；
The 2nd PWM driving chips are drivingly connected the first sub- controllable electronic switch and the described second sub- controlled electron
Another in switch, and connect driving third controllable electronic switch.
Preferably,
Second controllable electronic switch, including：4th sub- controllable electronic switch of parallel connection, the 5th sub- controlled electron are opened
It closes, and the 4th sub- controllable electronic switch is connect with the PWM driving chips respectively with the 5th sub- controllable electronic switch.
Preferably,
Described first and second, four, five sub- controllable electronic switches and the third controllable electronic switch are field-effect tube.
On the other hand, the utility model provides a kind of motor, is equipped with any of the above-described kind of brush motor brake control circuit.
The utility model provides a kind of brush motor brake control circuit, can be used for controlling provided with two in motor circuit
Make brake controllable electronic switch, if during use one fail, can also have another substitute realize brake function,
Security risk existing in the prior art is eliminated, realizes the safe spare of motor brake control.
The utility model also provides a kind of motor, it may have above-mentioned advantageous effect, details are not described herein.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 has brush electromagnetic brake circuit diagram for script in the prior art；
Fig. 2 is by a kind of structural representation for the brush motor brake control circuit that specific implementation mode provides of the utility model
Figure；
Fig. 3 is the booting hardware check journey for the brush motor brake control circuit that specific embodiment of the present invention provides
Program flow diagram.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Referring to FIG. 2, Fig. 2 is by a kind of brush motor brake control circuit that specific implementation mode provides of the utility model
Structural schematic diagram.
In a kind of specific implementation mode of the utility model, the utility model embodiment provides a kind of brush motor brake
Control circuit, including：Controller 210, PWM driving chips 220 and motor circuit 230；The controller 210 can be monolithic
Machine.
The motor circuit 230, including：First controllable electronic switch 231, the second controllable electronic switch 232, third are controllable
Electronic switch 233；
First controllable electronic switch 231, second controllable electronic switch 232, the third controllable electronic switch
233, which are electrically connected at first, electrically puts 234；
The other end of first controllable electronic switch 231 is connected to the anode 241 of positive pole, motor, for controlling
The motor brake；
The other end of second controllable electronic switch 232 is connected to the cathode 242 of motor, as spare brake；Specifically
, in embodiments herein, when the first controllable electronic switch 231 does not break down, can also select to allow second can
It controls electronic switch 232 to work, controls the motor together and brake, naturally it is also possible to only by the second controllable electronic switch 232
As spare brake, only enables in the first 231 failure of controllable electronic switch, can specifically determine according to actual needs.
Electrically point 235 and one end of first resistor 236 are electric by second for the other end of the third controllable electronic switch 233
Property connection, the opening and closing for controlling the motor circuit 230；
The other end of the first resistor 236 is electrically put 237 by third and is connect with one end of second resistance 238；
The other end of the second resistance 238 is grounded；
Described first electrically puts 234 is grounded by 3rd resistor 239；
The power cathode 243 is grounded；
The controller 210 connects the PWM driving chips 220, and the PWM driving chips 220 connect described first can
Control electronic switch 231, second controllable electronic switch 232 and the third controllable electronic switch 233.
In the present embodiment, in such a way that electronic switch is spare mutually, two are provided in motor circuit for controlling
Make brake controllable electronic switch, if during use one fail, can also have another substitute realize brake function,
The safety of entire circuit is increased, and when any one electronic switch breaks down, can realized spare mutually.
Further, referring again to shown in Fig. 2, in order to preferably realize the mutual spare of electronic switch, described first
Controllable electronic switch 231 may include：First sub- controllable electronic switch Q1, the second sub- controllable electronic switch Q2 in parallel, and institute
The first sub- controllable electronic switch Q1 is stated to connect with the PWM driving chips respectively with the second sub- controllable electronic switch Q2；Described
Two controllable electronic switches 232 may include：4th sub- controllable electronic switch Q4, the 5th sub- controllable electronic switch Q5 in parallel, and
The 4th sub- controllable electronic switch Q4 is connect with the PWM driving chips respectively with the 5th sub- controllable electronic switch Q5.Third
Controllable electronic switch 233 is field-effect tube Q3.
It is worth noting that the first, second, third and fourth sub- controllable electronic switch in above-mentioned specific implementation mode can be adopted
Use field-effect tube.
In above-described embodiment the first controllable electronic switch 231 and the second controllable electronic switch 232 include two sons can
Control electronic switch, and each sub- controllable electronic switch can chip 220 driven directly control, opened in each controlled electron
Portion realizes the mechanism that can be substituted for each other brake inside the Pass, further ensures the security and stability of entire circuit brake system.
Preferably, the PWM driving chips 220, including：First PWM driving chips 221, the 2nd PWM driving chips 222；
The first PWM driving chips 221 are drivingly connected the described first sub- controllable electronic switch Q1 and are opened with the described second sub- controlled electron
Any of Q2 is closed, and is drivingly connected the second controlled electron 232 switch；The 2nd PWM driving chips 222 are drivingly connected institute
Another during the first sub- controllable electronic switch Q1 is switched with the described second sub- controlled electron Q2 is stated, and it is controllable to connect driving third
Electronic switch 233.Specifically, as shown in Fig. 2, the first PWM driving chips 221 be drivingly connected the first sub- controllable electronic switch Q1,
The 4th sub- sub- controllable electronic switch Q5 of controllable electronic switch Q4 and the 5th；The second son of 2nd PWM driving chips 222 driving is controllable
Electronic switch Q2 and field-effect tube Q3.Thus, two PWM driving chips equally realize the effect that can be substituted for each other,
Whichsoever PWM driving chips occur abnormal, and brake control equally may be implemented in another.
As shown in Fig. 2, in present embodiment, braking circuit mainly (refers to the first PWM driving chips by two driving chips
221, the 2nd PWM driving chips 222) and 5 field-effect tube compositions.Q1 and Q2 is brake field-effect tube, and Q3 is to cut-off field-effect
Pipe, Q4 and Q5 are that brake substitutes field-effect tube, if Q1, Q2 and Q3 are wherein there are one damage, Q4 and Q5 can substitute it and brake.
Preferably, it in order to increase the function of voltage and current inspection, can controlled on the circuit base of above-mentioned specific embodiment
Increase testing process in device 210 processed, first the 234, second electrical point 235 of electrical point and third are electrically put to 237 voltage minute
It Fan Huidao not controller 210.Whether corresponding threshold range is set in the controller in this way, you can know whole system normal
Running.When detecting first, electrically electrically point 235, third electrically put 237 feedback voltage not in preset range to point 234, second
When, controller 210 starts brake program, and control PWM chip output brake voltage signal realizes defencive function.
In one embodiment of the application, when circuit shown in Fig. 2 works, in order to realize smooth startup, reduces and start
Electric current avoids starting overcurrent tripping, and when can control motor progress soft start, PWM1-1 and PWM4-1 are low level, Q1 and Q2
Open circuit, PWM2-1 and PWM3-1 are high level, Q4 and Q5 short circuits, and PWM5-1 is to change over time, duty ratio it is higher and higher one
A PWM waveform realizes the soft start of complete machine by the quick on-off of Q3.When needing brake, PWM-1 is low level, and Q3 is disconnected
It opens, wiring board is disconnected to the power supply of motor, and chip carries out brake duty ratio tune by PWM1-1, PWM2-1, PWM3-1, PWM4-1
It is whole, using the inverse electromotive force of motor, pass through field-effect tube Q1, Q2, Q4, Q5 so that motor Quick brake is shut down.
If opening a way during Q3 uses, motor power-off, controller can't detect operating current, be immediately controlled Q1, Q2,
Q3, Q4 harmonic brake；If short circuit during Q3 uses, after electronic switch disconnects, controller controls Q3 and disconnects, after disconnection still
It can detect that first electrically puts the 234, second electrical feedback voltage put 235, third and electrically put 237, judge that motor is still operating,
Then control Q1, Q2, Q3, Q4 harmonic brake respectively.
It opens a way during Q1 uses, then still there is field-effect tube Q2 to substitute its function, open a way during Q2 uses, then Q1 is replaced
For its function；
Q1 or Q2 uses are short-circuit in the process, then field-effect tube Q1 or Q2 electrical short circuits, and electric current moment becomes larger, controller inspection
It measures high current and disconnects field-effect tube Q3 immediately, and control the brake of field-effect tube Q4, Q5 harmonic；
It opens a way during Q4 uses, then still there is field-effect tube Q5 to substitute its function, open a way during Q5 uses, then Q4 is replaced
For its function；
Wherein, actual test finds that this double drive chip adds the mode of 5 field-effect tube more stable and reliable, and
And field-effect tube is hardly damaged.
In one embodiment with braking circuit as shown in Figure 2, startup self-detection has also been carried out before motor booting,
Whether self-test flow is as shown in figure 3, first by hardware detection voltage and current in normal standard.Wherein, VT (VT
One electric signal that electrically point 234 is fed back) it is the Vital Voltage signal whether 5 field-effect tube of detection are damaged, pass through 5 fields effects
Should the different conditions of pipe break-make can judge whether field-effect tube is damaged, if field-effect tube is damaged, booting next time complete machine does not open
It is dynamic.
Under the on off operating mode different by controlling Q1, Q2, Q3, Q4, Q5 successively, the voltage signal of VT whether with normal condition
Under preset voltage value it is consistent, specifically, can be with reference chart 3：
Step S11：Microcontroller voltage is detected whether in normal range (NR), is to continue in next step, otherwise machine does not work；
This step S11 is to whether detect microcontroller voltage in normal range (NR).
Step S12：Q5 is connected, and Q1, Q2, Q3, Q4 shutdown, the voltage at the ends detection VT, if VT is low level, Q3 is short
Road keeps machine not work；If VT is high level, continue in next step；
Whether this step S12 is short-circuit in order to detect Q3.
Step S13：Q3, Q4, Q5 are connected, Q1, Q2 shutdown；If VT is high level, Q3 open circuits keep machine not work
Make；If VT is low level, continue in next step；
This step S13 is to detect whether Q3 opens a way.
Step S14：Q1, Q2, Q3, Q4, Q5 are turned off；If VT is high level, there is short circuit in Q1, Q2, Q3, Q4, Q5,
Machine is kept not work；If VT is low level, continue in next step；
This step S14 is to detect Q1, Q2, Q3, Q4, Q5 with the presence or absence of short circuit.
Step S15：Q4 is connected, Q1, Q2, Q3, Q5 shutdown；If VT is low level, Q4 open circuits keep machine not work
Make；If VT is high level, continue in next step；
This step S15 is to detect whether Q4 opens a way.
Step S16：Q5 is connected, Q1, Q2, Q3, Q4 shutdown；If VT is low level, Q5 open circuits keep machine not work
Make；If VT is high level, continue in next step；
This step S16 is to detect whether Q5 opens a way.
Step S17：Q2 is connected, Q1, Q3, Q4, Q5 shutdown；If VT is low level, Q2 open circuits keep machine not work
Make；If VT is high level, continue in next step；
This step S17 is to detect whether Q2 opens a way.
Step S18：Q1 is connected, Q2, Q3, Q4, Q5 shutdown；If VT is low level, Q1 open circuits keep machine not work
Make；If VT is high level, continue in next step；
This step S18 is to detect whether Q1 opens a way.
Step S19：It is normal to start.
Above-mentioned steps are to examine a kind of mode of this brush motor brake control circuit, it is of course possible to have more examine to flow
The step of journey, S11 to S18 as escribed above, can overturn sequence and test.
In another specific implementation mode of the utility model, the utility model embodiment provides a kind of motor, is equipped with
Brush motor brake control circuit in any of the above-described kind of specific implementation mode.
The foregoing description of the disclosed embodiments enables those skilled in the art to realize or use the utility model.
Various modifications to these embodiments will be apparent for a person skilled in the art, general original as defined herein
Reason can be realized in other embodiments without departing from the spirit or scope of the present utility model.Therefore, this practicality is new
Type is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase
Consistent widest range.
Claims (9)
1. a kind of brush motor brake control circuit, which is characterized in that including：Controller, PWM driving chips and motor electricity
Road；
The motor circuit, including：First controllable electronic switch, the second controllable electronic switch, third controllable electronic switch；
First controllable electronic switch, second controllable electronic switch, the third controllable electronic switch are electrically connected at
First electrical point；
The other end of first controllable electronic switch is connected to the anode of positive pole, motor, stops for controlling the motor
Vehicle；
The other end of second controllable electronic switch is connected to the cathode of motor, as spare brake；
The other end of the third controllable electronic switch is by second electrically one end of point and first resistor electric connection, for controlling
Make the opening and closing of the motor circuit；
The other end of the first resistor is electrically put by third and is connect with one end of second resistance；The second resistance it is another
End ground connection；Described first electrical point passes through 3rd resistor and is grounded；The power cathode ground connection；
The controller connects the PWM driving chips, and the PWM driving chips connect first controllable electronic switch, institute
State the second controllable electronic switch and the third controllable electronic switch.
2. brush motor brake control circuit according to claim 1, which is characterized in that
Described first electrical point is connect with the controller.
3. brush motor brake control circuit according to claim 1, which is characterized in that
Described second electrical point is connect with the controller.
4. brush motor brake control circuit according to claim 1, which is characterized in that
Electrically point is connect the third with the controller.
5. brush motor brake control circuit according to claim 1, which is characterized in that
First controllable electronic switch, including：The first sub- controllable electronic switch, the second sub- controllable electronic switch of parallel connection, and
The first sub- controllable electronic switch is connect with the PWM driving chips respectively with the second sub- controllable electronic switch.
6. brush motor brake control circuit according to claim 5, which is characterized in that
The PWM driving chips, including：First PWM driving chips, the 2nd PWM driving chips；
The first PWM driving chips are drivingly connected the first sub- controllable electronic switch and the described second sub- controllable electronic switch
Any of, and it is drivingly connected the second controllable electronic switch；
The 2nd PWM driving chips are drivingly connected the first sub- controllable electronic switch and the described second sub- controllable electronic switch
In another, and connect driving third controllable electronic switch.
7. brush motor brake control circuit according to claim 1, which is characterized in that
Second controllable electronic switch, including：The 4th sub- controllable electronic switch, the 5th sub- controllable electronic switch of parallel connection, and
The 4th sub- controllable electronic switch is connect with the PWM driving chips respectively with the 5th sub- controllable electronic switch.
8. brush motor brake control circuit according to claim 7, which is characterized in that
Described first and second, four, five sub- controllable electronic switches and the third controllable electronic switch are field-effect tube.
9. a kind of motor, which is characterized in that be equipped with such as claim 1 to 8 any one of them brush motor brake control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820302620.4U CN207947731U (en) | 2018-03-05 | 2018-03-05 | A kind of brush motor brake control circuit and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820302620.4U CN207947731U (en) | 2018-03-05 | 2018-03-05 | A kind of brush motor brake control circuit and motor |
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| Publication Number | Publication Date |
|---|---|
| CN207947731U true CN207947731U (en) | 2018-10-09 |
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ID=63700452
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820302620.4U Active CN207947731U (en) | 2018-03-05 | 2018-03-05 | A kind of brush motor brake control circuit and motor |
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| Country | Link |
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| CN (1) | CN207947731U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109602551A (en) * | 2018-11-21 | 2019-04-12 | 韩雪 | The self-actuating brake circuit and control method of brush motor electric wheel-chair vehicle |
-
2018
- 2018-03-05 CN CN201820302620.4U patent/CN207947731U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109602551A (en) * | 2018-11-21 | 2019-04-12 | 韩雪 | The self-actuating brake circuit and control method of brush motor electric wheel-chair vehicle |
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Effective date of registration: 20190415 Address after: 215009 No. 55 Shilin Road, Huguan District, Suzhou High-tech Industrial Development Zone, Jiangsu Province Patentee after: LEXY ELECTRIC GREEN ENERGY TECHNOLOGY (SUZHOU) CO., LTD. Address before: 215009 No. 1 Xiangyang Road, New District, Jiangsu, Suzhou Patentee before: Lexy Electric Co., Ltd. |