CN211223750U - Electric scooter control device - Google Patents
Electric scooter control device Download PDFInfo
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- CN211223750U CN211223750U CN201921851085.9U CN201921851085U CN211223750U CN 211223750 U CN211223750 U CN 211223750U CN 201921851085 U CN201921851085 U CN 201921851085U CN 211223750 U CN211223750 U CN 211223750U
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Abstract
The utility model discloses an electric scooter controlling means. Electric scooter controlling means passes through current-voltage sampling circuit and is connected with motor drive circuit and main control unit respectively, gather the phase current signal and the supply voltage signal of motor, control signal acquisition circuit is connected with throttle handle and main control unit respectively, gather throttle signal, back electromotive force detection circuitry is connected with main control unit and motor respectively, detect the three-phase back electromotive force signal of motor, main control unit is connected with motor drive circuit, calculate motor speed according to three-phase back electromotive force signal, if receive throttle signal after motor speed is greater than predetermineeing the threshold value, then according to phase current signal, supply voltage signal obtains drive signal based on the FOC transform, so that motor drive circuit driving motor rotates. Because only under specific conditions just change driving motor and rotate based on FOC, avoided the scooter to start and use hall sensor under quiescent condition, the cost is reduced when having increased the security.
Description
Technical Field
The utility model relates to the field of electronic technology, especially, relate to an electric scooter controlling means.
Background
The scooter is as a tool of riding instead of walk, can make things convenient for people's life to a certain extent, and the scooter is most all collapsible moreover, makes things convenient for people's carrying. With the increasing popularity of the skateboards, the potential safety problem and reliability of the scooter are also gradually emphasized by people.
Most of the skateboards on the market at present have Hall direct current brushless motors, and the skateboards are allowed to be started in a static state. When not in use, the scooter can be mistakenly touched by factors such as playing of children and the like, so that potential safety hazards are brought. The manufacturing cost of the Hall direct current brushless motor is higher, the process requirement is stricter, and the product reject ratio is higher. And as long as one of the Hall devices has a fault, the operation of the motor is abnormal.
The above is only for the purpose of assisting understanding of the technical solutions of the present invention, and does not represent an admission that the above is the prior art.
SUMMERY OF THE UTILITY MODEL
A primary object of the utility model is to provide an electric scooter controlling means aims at solving among the prior art technical problem that the scooter is with high costs and the security is not high.
In order to achieve the above object, the utility model provides an electric scooter controlling means, electric scooter controlling means includes:
the device comprises a current and voltage sampling circuit, a control signal acquisition circuit, a back electromotive force detection circuit, a motor drive circuit and a main controller; wherein the content of the first and second substances,
the current and voltage sampling circuit is respectively connected with the output end of the motor driving circuit and the main controller, and is used for acquiring a phase current signal and a power supply voltage signal of the motor and sending the phase current signal and the power supply voltage signal to the main controller;
the control signal acquisition circuit is respectively connected with the accelerator handle and the main controller, and is used for acquiring an accelerator signal input to the electric scooter by a user through the accelerator handle and sending the accelerator signal to the main controller;
the back electromotive force detection circuit is respectively connected with the main controller and the motor, and is used for detecting a three-phase back electromotive force signal of the motor and sending the three-phase back electromotive force signal to the main controller;
the main controller is connected with the motor driving circuit and used for calculating the rotating speed of the motor according to the three-phase back electromotive force signals when the three-phase back electromotive force signals are received, and if the throttle signals are received after the rotating speed of the motor is larger than a preset threshold value, driving signals are obtained based on FOC transformation according to the phase current signals and the power supply voltage signals, and the driving signals are sent to the motor driving circuit;
the motor driving circuit is connected with the motor and used for driving the motor to rotate according to the driving signal.
Preferably, the current-voltage sampling circuit comprises a current sampling unit and a voltage sampling unit; the current sampling unit is respectively connected with the motor driving circuit and the main controller, and the voltage sampling unit is respectively connected with the first power supply, the second power supply and the main controller.
Preferably, the current sampling unit includes a sampling resistor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, a second capacitor, and an operational amplifier; wherein the content of the first and second substances,
the first end of the sampling resistor is connected with the output end of the motor driving circuit, and the second end of the sampling resistor is respectively connected with the first end of the first capacitor and the first end of the first resistor;
the second end of the first capacitor is grounded;
the second end of the first resistor is respectively connected with the homodromous input end of the operational amplifier and the first end of the second resistor;
the second end of the second resistor is connected with the main controller;
the inverting input end of the operational amplifier is respectively connected with the first end of the third resistor and the first end of the fourth resistor, and the output end of the operational amplifier is respectively connected with the second end of the fourth resistor and the first end of the fifth resistor;
the second end of the third resistor is grounded;
and the second end of the fifth resistor is connected with the main controller, and the second end of the fifth resistor is grounded through the second capacitor.
Preferably, the voltage sampling unit includes a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a first triode, a second triode, and a third capacitor; wherein the content of the first and second substances,
the first end of the sixth resistor is connected with the first power supply, the second end of the sixth resistor is connected with the base electrode of the first triode, and the second end of the sixth resistor is grounded through the seventh resistor;
a collector of the first triode is connected with a first end of the eighth resistor, and an emitter of the first triode is grounded;
a second end of the eighth resistor is connected with a first end of the ninth resistor and a base of the second triode respectively;
a second end of the ninth resistor is connected with the second power supply and an emitter of the second triode respectively;
a collector of the second triode is connected with a first end of the tenth resistor;
the eleventh resistor is connected in parallel with the third capacitor, a first end of the eleventh resistor is connected with a second end of the tenth resistor and the main controller respectively, and a second end of the eleventh resistor is grounded.
Preferably, the back electromotive force detection circuit includes a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, a fourth capacitor, a fifth capacitor and a sixth capacitor; wherein the content of the first and second substances,
a first end of the twelfth resistor, a first end of the thirteenth resistor and a first end of the fourteenth resistor are all connected with the motor, and a second end of the twelfth resistor, a second end of the thirteenth resistor and a second end of the fourteenth resistor are all connected with the main controller;
the fifteenth resistor is connected with the fourth capacitor in parallel, a first end of the fifteenth resistor is connected with a second end of the twelfth resistor, and a second end of the fifteenth resistor is grounded;
the sixteenth resistor is connected with the fifth capacitor in parallel, a first end of the sixteenth resistor is connected with a second end of the thirteenth resistor, and a second end of the sixteenth resistor is grounded;
the seventeenth resistor is connected in parallel with the sixth capacitor, a first end of the seventeenth resistor is connected with a second end of the fourteenth resistor, and a second end of the seventeenth resistor is grounded.
Preferably, the control signal acquisition circuit is further connected with a brake handle and/or a gear selection switch, and is configured to correspondingly receive a brake signal input to the brake handle by a user and/or a gear signal of the gear selection switch.
Preferably, still include preceding back lamp and loudspeaker control circuit, with main control unit connects for receive preceding back lamp signal and loudspeaker signal that main control unit sent to the sound control of going out and loudspeaker is gone out to the bright of corresponding realization preceding back lamp.
Preferably, the control signal acquisition circuit is further connected with a lock machine switch and is used for receiving a lock machine signal input to the lock machine switch by a user so as to control the motor to be in a locking state through the main controller.
Preferably, still include charge detection circuit, with main control unit is connected for detect electric scooter's the signal of charging, and send the signal of charging to main control unit makes main control unit carries out the protection of charging.
Preferably, the motor is further included, and the motor is a brushless direct current motor.
The utility model discloses a current-voltage sampling circuit is connected with motor drive circuit's output and main control unit respectively, gather the phase current signal and the supply voltage signal of motor, control signal acquisition circuit is connected with throttle handle and main control unit respectively, gather throttle signal, back electromotive force detection circuitry is connected with main control unit and motor respectively, detect the three-phase back electromotive force signal of motor, main control unit is connected with motor drive circuit, calculate motor speed according to three-phase back electromotive force signal, if receive throttle signal after motor speed is greater than the predetermined threshold value, then according to phase current signal, supply voltage signal obtains drive signal based on the FOC transform, so that motor drive circuit driving motor rotates. Wherein, just receive throttle signal time just when motor speed is great and just change driving motor and rotate based on FOC, avoided the scooter to start and use hall sensor under quiescent condition, reduced the scooter cost when having increased the security.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural view of an embodiment of a control device of an electric scooter of the present invention;
FIG. 2 is a schematic diagram of an embodiment of the current sampling unit of FIG. 1;
FIG. 3 is a schematic diagram of an embodiment of the voltage sampling unit of FIG. 1;
fig. 4 is a schematic structural diagram of an embodiment of the back electromotive force detection circuit in fig. 1.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Current and |
110 | |
| 200 | Control |
120 | |
| 300 | Counter electromotive force detection circuit | VCC1～VCC2 | First power supply to |
| 400 | Motor drive circuit | R1～R17 | First to |
| 500 | Front and rear lamp and loudspeaker control circuit | C1～C6 | First to |
| 600 | Charging detection circuit | Q1～Q2 | First to second triodes |
| IC | Main controller | U | Operational amplifier |
| M | Electric machine | RS | Sampling resistor |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides an electric scooter controlling means.
Referring to fig. 1, in an embodiment, the electric scooter control device includes a current and voltage sampling circuit 100, a control signal collecting circuit 200, a back electromotive force detection circuit 300, a motor driving circuit 400, and a main controller IC; the current and voltage sampling circuit 100 is connected to the output end of the motor driving circuit and the main controller IC, and is configured to collect a phase current signal and a power supply voltage signal of the motor M, and send the phase current signal and the power supply voltage signal to the main controller IC; the control signal acquisition circuit 200 is respectively connected with an accelerator handle (not shown) and the main controller IC, and is configured to acquire an accelerator signal input to the electric scooter by a user through the accelerator handle and send the accelerator signal to the main controller IC; the back electromotive force detection circuit 30 is respectively connected to the main controller IC and the motor M, and configured to detect a three-phase back electromotive force signal of the motor M and send the three-phase back electromotive force signal to the main controller IC; the main controller IC is connected to the motor driving circuit 400, and configured to calculate a motor rotation speed according to the three-phase back electromotive force signal when receiving the three-phase back electromotive force signal, and if the throttle signal is received after the motor rotation speed is greater than a preset threshold value, obtain a driving signal based on FOC transformation according to the phase current signal and the supply voltage signal, and send the driving signal to the motor driving circuit 400; the motor driving circuit 400 is connected to the motor M and configured to drive the motor M to rotate according to the driving signal.
It should be noted that, the conventional electric scooter usually uses the hall sensor to obtain the motor angle signal to determine the motor position, so that the cost of the electric scooter is high, and when the hall sensor fails, the motor failure is easily caused. No hall electric scooter can not appear leading to the condition that the scooter can not operate because of hall sensor is unusual in this embodiment to also set for the non-stationary start in the start, can increase the security performance, stability and security all obtain effective the promotion.
It can be understood that the three-phase back electromotive force signals of the motor are collected through the back electromotive force detection circuit 300, then the current motor rotating speed is calculated through the main controller IC, and the throttle signal collected by the control signal collection circuit 200 is effective only when the motor rotating speed is greater than a preset value. It should be noted here that, it is not just valid that two conditions are satisfied simultaneously, but has precedence relationship, must first motor rotational speed be greater than the preset value, later have throttle signal, throttle signal is valid, and main control unit IC just can control motor M and rotate this moment. If the motor speed is not greater than the preset value, or the motor speed is greater than the preset value but has throttle signal before this, this throttle signal is invalid, and main control unit IC can not control motor M and rotate, so realized electric scooter's non-stationary start, avoid the scooter when not bringing the potential safety hazard because of the external factor mistake touches the switch.
In a specific implementation, the main controller IC further includes an FOC converter (not shown), so that the phase current signal and the supply voltage signal can be converted into a driving signal to drive the motor through the FOC converter, thereby implementing speed regulation of the electric scooter and enhancing stability of the electric scooter.
This embodiment is connected with motor drive circuit's output and main control unit respectively through current-voltage sampling circuit, gather the phase current signal and the supply voltage signal of motor, control signal acquisition circuit is connected with throttle handle and main control unit respectively, gather throttle signal, back electromotive force detection circuitry is connected with main control unit and motor respectively, detect the three-phase back electromotive force signal of motor, main control unit is connected with motor drive circuit, calculate motor speed according to three-phase back electromotive force signal, if receive throttle signal after motor speed is greater than the preset threshold, then according to phase current signal, supply voltage signal obtains drive signal based on FOC transform, so that motor drive circuit driving motor rotates. Wherein, just receive throttle signal time just when motor speed is great and just change driving motor and rotate based on FOC, avoided the scooter to start and use hall sensor under quiescent condition, reduced the scooter cost when having increased the security.
Further, referring to fig. 1 and fig. 2, the current-voltage sampling circuit 100 includes a current sampling unit 110 and a voltage sampling unit 120; the current sampling unit 110 is respectively connected with the motor driving circuit 400 and the main controller IC, and the voltage sampling unit 120 is respectively connected with the first power VCC1, the second power VCC2 and the main controller IC.
Specifically, the current sampling unit 110 includes a sampling resistor RS, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first capacitor C1, a second capacitor C2, and an operational amplifier U; a first end of the sampling resistor RS is connected to the output end of the motor driving circuit 400, and a second end of the sampling resistor RS is respectively connected to a first end of the first capacitor C1 and a first end of the first resistor R1; the second end of the first capacitor C1 is grounded; a second end of the first resistor R1 is connected with a same-direction input end of the operational amplifier U and a first end of the second resistor R2 respectively; a second end of the second resistor R2 is connected with the main controller IC; the inverting input end of the operational amplifier U is connected to the first end of the third resistor R3 and the first end of the fourth resistor R4, respectively, and the output end of the operational amplifier U is connected to the second end of the fourth resistor R4 and the first end of the fifth resistor R5, respectively; a second end of the third resistor R3 is grounded; the second terminal of the fifth resistor R5 is connected to the main controller IC, and the second terminal of the fifth resistor R5 is also connected to ground via the second capacitor C2.
Further, referring to fig. 1 and fig. 3, the voltage sampling unit 120 includes a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a first transistor Q1, a second transistor Q2, and a third capacitor Q3; a first end of the sixth resistor R6 is connected to the first power source VCC1, a second end of the sixth resistor R6 is connected to the base of the first transistor Q1, and a second end of the sixth resistor R6 is further grounded via the seventh resistor R7; the collector of the first triode Q1 is connected with the first end of the eighth resistor R8, and the emitter of the first triode Q1 is grounded; a second end of the eighth resistor R8 is connected to the first end of the ninth resistor R9 and the base of the second transistor Q2, respectively; a second end of the ninth resistor R9 is connected to the second power VCC2 and the emitter of the second transistor Q2, respectively; the collector of the second triode Q2 is connected with the first end of the tenth resistor R10; the eleventh resistor R11 is connected in parallel with the third capacitor C3, a first end of the eleventh resistor R11 is connected to a second end of the tenth resistor R10 and the main controller IC, respectively, and a second end of the eleventh resistor R11 is grounded.
It should be understood that the phase current signal of the motor M can be collected by the current sampling unit 110, and the supply voltage signal of the motor M can be collected by the voltage sampling unit 120.
Further, referring to fig. 1 and fig. 4 together, the back electromotive force detection circuit 300 includes a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17, a fourth capacitor C4, a fifth capacitor C5, and a sixth capacitor C6; a first end of the twelfth resistor R12, a first end of the thirteenth resistor R13, and a first end of the fourteenth resistor R14 are all connected to the motor M, and a second end of the twelfth resistor R12, a second end of the thirteenth resistor R13, and a second end of the fourteenth resistor R14 are all connected to the main controller IC; the fifteenth resistor R15 is connected in parallel with the fourth capacitor C4, a first end of the fifteenth resistor R16 is connected with a second end of the twelfth resistor R12, and a second end of the fifteenth resistor R15 is grounded; the sixteenth resistor R16 is connected in parallel with the fifth capacitor C5, a first end of the sixteenth resistor R16 is connected with a second end of the thirteenth resistor R13, and a second end of the sixteenth resistor R16 is grounded; the seventeenth resistor R17 is connected in parallel with the sixth capacitor C6, a first end of the seventeenth resistor R17 is connected to a second end of the fourteenth resistor R14, and a second end of the seventeenth resistor R17 is grounded.
It is easy to understand that when the direct current motor is started initially, the field winding establishes a magnetic field, the armature current generates another magnetic field, and the two magnetic fields interact with each other to start the motor to run. The armature winding rotates in the magnetic field, thus producing a generator effect. In effect rotating the armature generates an induced electromotive force, opposite in polarity to the armature voltage, which is referred to as a back electromotive force.
It should be noted that the functions of the fifteenth resistor R15 and the fourth capacitor C4, the sixteenth resistor R16 and the fifth capacitor C5, and the seventeenth resistor R17 and the sixth capacitor C6 are filtering, and a more accurate three-phase back electromotive force signal can be obtained through the back electromotive force detection circuit 300.
In a specific implementation, the control signal acquisition circuit 200 is further connected to a brake handle (not shown) and/or a gear selection switch (not shown), and is configured to correspondingly receive a brake signal input to the brake handle by a user and/or a gear signal of the gear selection switch.
Understandably, when the user outputs a braking signal through the brake handle, the control signal acquisition circuit 200 acquires the braking signal and sends the braking signal to the main controller IC, and after the main controller IC receives the braking signal, the main controller IC closes the output of the motor driving circuit 400 first and then controls the braking force according to the braking signal.
When the user outputs the gear signal through the gear selection switch, the control signal acquisition circuit 200 acquires the gear signal and transmits the gear signal to the main controller IC, and the main controller IC limits the maximum output speed according to the gear signal.
Further, electric scooter controlling means still includes preceding back light and loudspeaker control circuit 500, with main control unit IC connects, is used for receiving preceding back light signal and loudspeaker signal that main control unit IC sent to correspond the bright control of going out and the sound control of loudspeaker of realizing preceding back light.
Further, the control signal acquisition circuit is further connected to a lock switch (not shown) for receiving a lock signal input to the lock switch by a user, so as to control the motor M to be in a locking state through the main controller IC.
It should be understood that, a user may trigger the lock function through the lock switch, and send a lock signal, the control signal detection circuit 200 detects the lock signal and sends the lock signal to the main controller IC, the main controller IC receives the lock signal and controls the lower bridge in the motor driving circuit 400 to be turned on, the motor M is in a locked state, and at this time, the main controller IC shields signals of speed regulation, braking, gear position, and the like unless the lock is released.
Further, electric scooter controlling means still includes charge detection circuitry 600, with main control unit IC connects for detect electric scooter's the signal of charging, and send the signal of charging extremely main control unit IC makes main control unit IC carries out the protection of charging.
It should be noted that, when the power supply battery is charged, the control signal detection circuit 200 detects a charging signal and sends the charging signal to the main controller IC, and the main controller IC triggers charging protection after receiving the charging signal, and at this time, the main controller IC shields signals such as speed regulation, brake and gear unless the charging protection state is released.
Further, the electric scooter control device further includes a dc brushless motor M.
It can be understood that the dc brushless motor M is connected to the motor driving circuit 400, and the motor driving circuit 400 drives the dc brushless motor M to operate.
This embodiment has realized through above-mentioned each circuit design that electric scooter controlling means starts, functions such as speed governing, brake, gear, lock machine and charging protection under non-quiescent condition, has effectively promoted electric scooter's stability and security.
The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A control device of an electric scooter is characterized by comprising a current and voltage sampling circuit, a control signal acquisition circuit, a counter electromotive force detection circuit, a motor driving circuit and a main controller; wherein the content of the first and second substances,
the current and voltage sampling circuit is respectively connected with the output end of the motor driving circuit and the main controller, and is used for acquiring a phase current signal and a power supply voltage signal of the motor and sending the phase current signal and the power supply voltage signal to the main controller;
the control signal acquisition circuit is respectively connected with the accelerator handle and the main controller, and is used for acquiring an accelerator signal input to the electric scooter by a user through the accelerator handle and sending the accelerator signal to the main controller;
the back electromotive force detection circuit is respectively connected with the main controller and the motor, and is used for detecting a three-phase back electromotive force signal of the motor and sending the three-phase back electromotive force signal to the main controller;
the main controller is connected with the motor driving circuit and used for calculating the rotating speed of the motor according to the three-phase back electromotive force signals when the three-phase back electromotive force signals are received, and if the throttle signals are received after the rotating speed of the motor is larger than a preset threshold value, driving signals are obtained based on FOC transformation according to the phase current signals and the power supply voltage signals, and the driving signals are sent to the motor driving circuit;
the motor driving circuit is connected with the motor and used for driving the motor to rotate according to the driving signal.
2. The scooter control device according to claim 1, wherein the current-voltage sampling circuit includes a current sampling unit and a voltage sampling unit; the current sampling unit is respectively connected with the motor driving circuit and the main controller, and the voltage sampling unit is respectively connected with the first power supply, the second power supply and the main controller.
3. The electric scooter control device according to claim 2, wherein the current sampling unit includes a sampling resistor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, a second capacitor, and an operational amplifier; wherein the content of the first and second substances,
the first end of the sampling resistor is connected with the output end of the motor driving circuit, and the second end of the sampling resistor is respectively connected with the first end of the first capacitor and the first end of the first resistor;
the second end of the first capacitor is grounded;
the second end of the first resistor is respectively connected with the homodromous input end of the operational amplifier and the first end of the second resistor;
the second end of the second resistor is connected with the main controller;
the inverting input end of the operational amplifier is respectively connected with the first end of the third resistor and the first end of the fourth resistor, and the output end of the operational amplifier is respectively connected with the second end of the fourth resistor and the first end of the fifth resistor;
the second end of the third resistor is grounded;
and the second end of the fifth resistor is connected with the main controller, and the second end of the fifth resistor is grounded through the second capacitor.
4. The electric scooter control device according to claim 2, wherein the voltage sampling unit includes a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a first transistor, a second transistor, and a third capacitor; wherein the content of the first and second substances,
the first end of the sixth resistor is connected with the first power supply, the second end of the sixth resistor is connected with the base electrode of the first triode, and the second end of the sixth resistor is grounded through the seventh resistor;
a collector of the first triode is connected with a first end of the eighth resistor, and an emitter of the first triode is grounded;
a second end of the eighth resistor is connected with a first end of the ninth resistor and a base of the second triode respectively;
a second end of the ninth resistor is connected with the second power supply and an emitter of the second triode respectively;
a collector of the second triode is connected with a first end of the tenth resistor;
the eleventh resistor is connected in parallel with the third capacitor, a first end of the eleventh resistor is connected with a second end of the tenth resistor and the main controller respectively, and a second end of the eleventh resistor is grounded.
5. The electric scooter control device according to claim 1, wherein the counter electromotive force detection circuit includes a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, a fourth capacitor, a fifth capacitor and a sixth capacitor; wherein the content of the first and second substances,
a first end of the twelfth resistor, a first end of the thirteenth resistor and a first end of the fourteenth resistor are all connected with the motor, and a second end of the twelfth resistor, a second end of the thirteenth resistor and a second end of the fourteenth resistor are all connected with the main controller;
the fifteenth resistor is connected with the fourth capacitor in parallel, a first end of the fifteenth resistor is connected with a second end of the twelfth resistor, and a second end of the fifteenth resistor is grounded;
the sixteenth resistor is connected with the fifth capacitor in parallel, a first end of the sixteenth resistor is connected with a second end of the thirteenth resistor, and a second end of the sixteenth resistor is grounded;
the seventeenth resistor is connected in parallel with the sixth capacitor, a first end of the seventeenth resistor is connected with a second end of the fourteenth resistor, and a second end of the seventeenth resistor is grounded.
6. The control device of the electric scooter of any one of claims 1 to 5, wherein the control signal acquisition circuit is further connected to a brake handle and/or a gear selection switch for correspondingly receiving a brake signal input by a user to the brake handle and/or a gear signal input by the gear selection switch.
7. The electric scooter control device as claimed in claim 6, further comprising a front and rear light and horn control circuit connected to the main controller for receiving front and rear light signals and horn signals transmitted from the main controller to correspondingly realize the on/off of the front and rear lights and the sound control of the horn.
8. The electric scooter control device as claimed in claim 7, wherein the control signal collecting circuit is further connected to a lock switch for receiving a lock signal input by a user to the lock switch to control the motor to be in a locked state through the main controller.
9. The electric scooter control device as claimed in claim 8, further comprising a charge detection circuit connected to the main controller for detecting a charge signal of the electric scooter and sending the charge signal to the main controller to enable the main controller to perform charge protection.
10. The electric scooter control device as claimed in claim 8, further comprising the motor, wherein the motor is a dc brushless motor.
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| CN201921851085.9U CN211223750U (en) | 2019-10-30 | 2019-10-30 | Electric scooter control device |
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| CN112623081A (en) * | 2021-01-06 | 2021-04-09 | 深圳博用科技有限公司 | Method and system for improving running safety of electric motorcycle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112623081A (en) * | 2021-01-06 | 2021-04-09 | 深圳博用科技有限公司 | Method and system for improving running safety of electric motorcycle |
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