CN213800026U

CN213800026U - Scooter controller

Info

Publication number: CN213800026U
Application number: CN202021966207.1U
Authority: CN
Inventors: 赵洋; 詹文广
Original assignee: Shenzhen Kechuangqi Technology Co ltd
Current assignee: Shenzhen Kechuangqi Technology Co ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-07-27
Anticipated expiration: 2030-09-09

Abstract

The utility model provides a scooter controller, this scooter controller are at the wide 39mm of 79mm of PCB length, and under the condition of components and parts height <21mm, including power module, communication circuit module, MCU main control chip module, pilot lamp module, tail lamp module, MOS drive circuit module, plug-in components MOS module, motor phase current/battery current sampling module, motor hall signal collection module, motor back electromotive force sampling module, program update module. The utility model discloses a scooter controller all receives under the condition of strict limitation at length, width height, has integrateed multiple functions, and same controller can satisfy customer's multiple demand, makes things convenient for production management and version upgrading simultaneously, and the cost price is very advantageous moreover.

Description

Scooter controller

Technical Field

The utility model relates to an electric motor car field, in particular to scooter controller.

Background

Along with the arrival of the intelligent era, electric scooter is by simple ride instead of walk and entertainment function, gradually to intelligent development, and whole car function is done more and more intellectuality, nevertheless because the scooter is different with the characteristic of traditional electric motor car, the scooter lies in light in weight with the advantage of traditional electric motor car, and is small, collapsible, easily carries, often is the extension that the space size has restricted the smart machine on developing intelligent road.

At present, the functions of the scooter become more and more along with the upgrading of people's demands, and the scooter is more and more complicated and diversified, electric scooter functions generally have digital instrument demonstration in the market, key-type switching on and off, remote control formula switching on and off, key formula switching on and off, cell-phone shutdown, cell-phone APP operation theftproof, the alarm theftproof, cruise, control indicator, electric quantity display lamp, brake tail lamp, headlamp etc., above-mentioned each function all needs outer one or more accessories just can realize a function, and these functions all link to the controller, under the condition that the length and width height of controller is all restricted, want to integrate so many functions and guarantee the operating performance, and need with low costs then a very serious challenge. The controllers in the market all adopt several functions as one controller version to realize multifunctional requirements, but when the functional requirements required by customers exceed the functions which can be realized by one controller, the requirements of the customers cannot be met, the versions are divided into the parts which are not beneficial to production management and subsequent upgrading maintenance, and the workload and the cost for changing a plurality of versions each time are huge.

Disclosure of Invention

The utility model discloses an above-mentioned not enough to present electric scooter controller provides a scooter controller.

The utility model discloses realize that its technical purpose technical scheme is: a scooter controller is arranged on a PCB and comprises a power supply module, a communication circuit module, an MCU main control chip module, an indicator light module, a tail light module, a motor phase current/battery current sampling module, a motor Hall signal acquisition module, a motor counter electromotive force sampling module and a program updating module; the PCB is also provided with a plug-in MOS module and an MOS drive module of an MOS tube inserted in the plug-in MOS module.

Further, in the scooter controller described above: the MOS drive module comprises an A-phase MOS drive module, a B-phase MOS drive module and a C-phase MOS drive module of the three-phase brushless DC motor with the same circuit structure.

Further, in the scooter controller described above: the A-phase MOS driving module comprises an upper tube MOSFET MOS3, a lower tube MOSFET MOS4 and an integrated driving chip AU1 of the MOSFET with the driving chip model being FD 2103;

pins P2.3 and P2.2 of a main control chip driving upper tube MOSFET MOS3 and a lower tube MOSFET MOS4 are respectively connected with a No. 2 pin and a No. 3 pin of an integrated driving chip AU 1; no. 7 pin of the integrated drive chip AU1 sequentially passes through a resistor AR5 and a resistor AR8 and then is connected with the grid of an upper tube MOSFET (metal oxide semiconductor field effect transistor) 3, the source of the upper tube MOSFET 3 is connected with a direct-current power supply anode VCC, and the source is connected with the source of a lower tube MOSFET 4 to form an As phase line of the three-phase direct-current brushless motor; the No. 5 pin of the integrated drive chip AU1 is connected with the grid of the lower tube MOSFET MOS4 after passing through the resistor AR12 and the resistor AR11 in sequence, and the source of the lower tube MOSFET MOS4 is connected with the cathode of the power supply;

no. 6 pin of the integrated drive chip AU1 is connected with an A phase line of the three-phase DC brushless motor through a resistor AR 10; the No. 1 pin is connected with a 12V working power supply; the No. 4 pin is grounded; a diode AD3 is arranged between the No. 8 pin and the No. 1 pin, and the anode of the diode AD3 is connected with the No. 1 pin; an electrolytic capacitor AC2 is arranged between the No. 8 pin and the A-phase line of the three-phase brushless DC motor, and the anode of the electrolytic capacitor AC2 is connected with the No. 8 pin.

Further, in the scooter controller described above: a diode AD2 is also connected in parallel at two ends of the resistor AR5, and the anode of the diode AD2 is connected with the common end of the resistor AR5 connected with the resistor AR 8;

a diode AD5 is also connected in parallel at two ends of the resistor AR12, and the anode of the diode AD5 is connected with the common end connected with the resistor AR12 and the resistor AR 11;

pin No. 6 of the integrated driver chip AU1 is also grounded through a diode AD4, and the anode of the diode AD4 is grounded.

Further, in the scooter controller described above: the common end of the resistor AR5 connected with the resistor AR8 is also connected with the phase line A of the three-phase DC brushless motor through a capacitor AC3 and a resistor AR9 respectively; the common terminal of the resistor AR12 connected with the resistor AR11 is also connected with the negative electrode of the power supply through a capacitor AC5 and a resistor AR13 respectively.

Further, in the scooter controller described above: the speed regulation fault detection module is used for detecting the fault of disconnection of any line of the speed regulation device; the speed regulation fault detection module comprises a diode D1, a resistor R15, a resistor R12 and a resistor R13;

the anode of the 5V working power supply is connected with the power supply input end of the speed regulation device SP through a resistor R15 and a diode D1 respectively, the signal end of the speed regulation device SP outputs a speed regulation signal through a resistor R12, and the two ends of the resistor R12 are grounded through a resistor R13 and a capacitor C5 respectively.

Further, in the scooter controller described above: the brake fault detection module is used for detecting the fault of disconnection of any line of the brake device and comprises a diode D4, a resistor R34, a resistor R14, a resistor R9 and a capacitor C8;

the anode of the 5V working power supply is connected with the power supply input end of the brake device BRK through a resistor R34 and a diode D4 respectively, the signal end of the brake device BRK outputs a brake signal through a resistor R9, and the two ends of the resistor R9 are grounded through a resistor R14 and a capacitor C8 respectively.

Further, in the scooter controller described above: the indicating lamp module is an LED lamp driving module and comprises a triode Q3, a triode BQ1, a resistor R5, a resistor R6, a resistor R24 and a resistor R25;

the control pin P4.6 of the main control chip for the LED lamp is connected with the base electrode of the triode BQ1 through a resistor R24, the emitting electrode of the triode BQ1 is grounded, the collecting electrode is connected with the base electrode of the triode Q3 through a resistor R6, and a resistor R25 is arranged between the base electrode and the emitting electrode of the triode BQ 1;

the battery voltage VCC is connected with the emitting electrode of the triode Q3 through the resistor BR15 and the 12V working voltage through the resistor R33, the collector electrode of the triode Q3 is connected with the anode of the resistor of the LED lamp, the cathode of the power supply of the LED lamp is grounded, and the resistor R5 is arranged between the emitting electrode and the base electrode of the triode Q3.

The utility model discloses a scooter controller is at 79mm wide 39mm of PCB length, and under the condition of components and parts height <21mm, can realize matching 12v and above voltage (generally 24v/36v/48v/64v/72 v) power supply and take the digital instrument of UART communication, can realize button switch on and off simultaneously, remote control formula switch on and off, key formula switch on and off, cell-phone APP shuts down, cell-phone APP operation theftproof, external alarm theftproof, manual/automatic cruise, control turn signal lamp operation and control, the electric quantity display lamp, the brake tail lamp, the front light, external speed governing handle, external brake handle etc. function, still support position sensor FOC control hardware requirement to main motor control, no position sensor FOC control hardware requirement, have position sensor square wave control hardware requirement, no position sensor square wave control hardware requirement, And (5) high-current climbing performance requirements. The utility model discloses a scooter controller all receives under the condition of strict limitation at length, width height, has integrateed multiple functions, and same controller can satisfy customer's multiple demand, makes things convenient for production management and version upgrading simultaneously, and the cost price is very advantageous moreover.

The present invention will be described in more detail with reference to the accompanying drawings and examples.

Drawings

FIG. 1 is a block diagram of a scooter controller.

FIG. 2 is a circuit diagram of a B-phase MOSFET driver circuit.

Fig. 3 is a circuit diagram of a phase a MOSFET driver circuit.

Fig. 4 is a C-phase MOSFET driving circuit diagram.

Fig. 5 is a circuit diagram of a speed regulation and brake fault detection module.

Fig. 6 is an indicator light module.

FIG. 7 is a circuit diagram of the interface between the communication module and the external boot device.

Fig. 8 shows a dc brushless motor sampling circuit.

Fig. 9 is a hall signal acquisition module.

Detailed Description

In this embodiment, as shown in fig. 1, a main control portion of the scooter controller in this embodiment is composed of a power module, a communication circuit module, an MCU main control chip module, an indicator light/tail light/lighting lamp circuit module, an MOS drive circuit module, a plug-in MOS module, a motor phase current/battery current s sampling module, a motor hall signal acquisition module, a motor back electromotive force sampling module, and a program updating module.

Wherein: the plug-in MOS module is a plug-in position of a schematic diagram MOS1, a schematic diagram MOS2, a schematic diagram MOS3, a schematic diagram MOS4, a schematic diagram MOS5 and a schematic diagram MOS 6.

The MOS driving module has the function of driving the MOS to open and close the MOSFET according to the state of the pin of the main control chip, thereby achieving the states of controlling the starting, regulating the speed, locking and stopping of the motor and the like.

The scheme is applied to controllers of a scientific creator HBC-MINI series, HBC18 and HBC-WD series.

Fig. 2, 3 and 4 show a B-phase MOSFET driving circuit, an a-phase MOSFET driving circuit and a C-phase MOSFET driving circuit, which are basically the same in circuit structure. The MOS drive module comprises an A-phase MOS drive module, a B-phase MOS drive module and a C-phase MOS drive module of the three-phase DC brushless motor with the same circuit structure.

As shown in fig. 3, the a-phase MOS drive module includes upper and lower MOSFET MOS3 and MOS4, integrated drive chip AU1 that drives MOSFET of chip model FD 2103; pins P2.3 and P2.2 of a main control chip driving upper tube MOSFET MOS3 and a lower tube MOSFET MOS4 are respectively connected with a No. 2 pin and a No. 3 pin of an integrated driving chip AU 1; no. 7 pin of the integrated drive chip AU1 sequentially passes through a resistor AR5 and a resistor AR8 and then is connected with the grid of an upper tube MOSFET (metal oxide semiconductor field effect transistor) 3, the source of the upper tube MOSFET 3 is connected with a direct-current power supply anode VCC, and the source is connected with the drain of a lower tube MOSFET 4 to form an A phase line of the three-phase direct-current brushless motor; the No. 5 pin of the integrated drive chip AU1 is connected with the grid of a lower tube MOSFET MOS4 after passing through a resistor AR12 and a resistor AR11 in sequence, and the source of the lower tube MOSFET MOS4 is connected with the cathode of a power supply; no. 6 pin of the integrated drive chip AU1 is connected with an A phase line of the three-phase DC brushless motor through a resistor AR 10; the No. 1 pin is connected with a 12V working power supply; the No. 4 pin is grounded; a diode AD3 is arranged between the No. 8 pin and the No. 1 pin, and the anode of the diode AD3 is connected with the No. 1 pin; an electrolytic capacitor AC2 is arranged between the No. 8 pin and the A-phase line of the three-phase brushless DC motor, and the anode of the electrolytic capacitor AC2 is connected with the No. 8 pin.

A diode AD2 is also connected in parallel at two ends of the resistor AR5, and the anode of the diode AD2 is connected with the common end of the resistor AR5 connected with the resistor AR 8; a diode AD5 is also connected in parallel at two ends of the resistor AR12, and the anode of the diode AD5 is connected with the common end connected with the resistor AR12 and the resistor AR 11; pin No. 6 of the integrated driver chip AU1 is also grounded through a diode AD4, and the anode of the diode AD4 is grounded.

The common end of the resistor AR5 connected with the resistor AR8 is also connected with the phase line A of the three-phase DC brushless motor through a capacitor AC3 and a resistor AR9 respectively; the common terminal of the resistor AR12 connected with the resistor AR11 is also connected with the negative electrode of the power supply through a capacitor AC5 and a resistor AR13 respectively.

Fig. 2 shows a B-phase MOSFET driving circuit, in which MOS1 and MOS2 are upper tube MOSFET and lower tube MOSFET, respectively, and P2.5 and P2.4 are main control chip driving pins of the upper tube MOSFET and the lower tube MOSFET, respectively, and are used for controlling on and off of the upper tube MOSFET and the lower tube MOSFET, respectively, where an on level of the upper tube MOSFET is high level and off is low level, and an on level of the lower tube MOSFET is low level and off is high level. The point B connects the B phase line of the three-phase DC brushless motor, the chip BU1 is the integrated driver chip of MOSFET, the driver chip model used in this case is FD 2103.

Fig. 3 shows an a-phase MOSFET driving circuit, in which MOS3 and MOS4 are upper tube MOSFET and lower tube MOSFET, respectively, and P2.3 and P2.2 are main control chip driving pins of the upper tube MOSFET and the lower tube MOSFET, respectively, and are used for controlling on and off of the upper tube MOSFET and the lower tube MOSFET, respectively, where an on level of the upper tube MOSFET is high level and off is low level, and an on level of the lower tube MOSFET is low level and off is high level. The A point is connected with an A phase line of the three-phase brushless DC motor, a chip AU1 is an integrated drive chip of an MOSFET, and the model of the drive chip used in the case is FD 2103.

Fig. 4 shows a C-phase MOSFET driving circuit, in which MOS5 and MOS6 are top tube MOSFET and bottom tube MOSFET, respectively, and P2.1 and P2.0 are main control chip driving pins of the top tube MOSFET and the bottom tube MOSFET, respectively, and are used for controlling the on and off of the top tube MOSFET and the bottom tube MOSFET, respectively, where the top tube MOSFET has a high on level and is turned off to a low level, and the bottom tube MOSFET has a low on level and is turned off to a high level. The point C is connected with a phase C line of the three-phase brushless DC motor, a chip CU1 is an integrated drive chip of an MOSFET, and the model of the drive chip used in the case is FD 2103.

As shown in fig. 5, the fault detection module detects a fault of disconnection of any line of the speed regulation device; the speed regulation fault detection module comprises a diode D1, a resistor R15, a resistor R12 and a resistor R13; the anode of the 5V working power supply is connected with the power supply input end of the speed regulation device SP through a resistor R15 and a diode D1 respectively, the signal end of the speed regulation device SP outputs a speed regulation signal through a resistor R12, and the two ends of the resistor R12 are grounded through a resistor R13 and a capacitor C5 respectively.

As shown in fig. 5, the brake fault detection module detects a fault that any line of the brake device is disconnected, and the brake fault detection module includes a diode D4, a resistor R34, a resistor R14, a resistor R9, and a capacitor C8; the anode of the 5V working power supply is connected with the power supply input end of the brake device BRK through a resistor R34 and a diode D4 respectively, the signal end of the brake device BRK outputs a brake signal through a resistor R9, and the two ends of the resistor R9 are grounded through a resistor R14 and a capacitor C8 respectively.

In this embodiment, the circuit structures of the speed regulation fault detection module for detecting the disconnection fault of any line of the speed regulation device and the brake fault detection module for detecting the disconnection fault of any line of the brake device are the same. As shown in fig. 5:

in the figure, SP is connected with a speed regulation device, P0.6 is an AD port for collecting speed regulation signals by a main control chip, and the rotating speed of the motor is determined by collecting the voltage of the AD port for collecting the speed regulation signals. The circuit can detect the fault of any line disconnection of the speed regulating device. In the figure, BRK is connected with a brake device, P0.7 is an AD port for a main control chip to collect brake signals, whether braking is carried out or not is determined by collecting the voltage of the AD port for the brake signals, and the braking force is determined

As shown in fig. 6, the indicator light module is an LED light driving module, and includes a transistor Q3, a transistor BQ1, a resistor R5, a resistor R6, a resistor R24, and a resistor R25; the control pin P4.6 of the main control chip for the LED lamp is connected with the base electrode of the triode BQ1 through a resistor R24, the emitting electrode of the triode BQ1 is grounded, the collecting electrode is connected with the base electrode of the triode Q3 through a resistor R6, and a resistor R25 is arranged between the base electrode and the emitting electrode of the triode BQ 1; the battery voltage VCC is connected with the emitting electrode of the triode Q3 through the resistor BR15 and the 12V working voltage through the resistor R33, the collecting electrode of the triode Q3 is connected with the anode of the resistor of the LED lamp, the cathode of the power supply of the LED lamp is grounded, and the resistor R5 is arranged between the collecting electrode and the base electrode of the triode Q3.

As shown in fig. 6: in the figure, the LED2 is an interface of an LED lamp, and can support a 12VLED lamp and a battery voltage type LED lamp (generally 24v, 36v, 48v, 64v, 72v, etc.), and the power supply voltage of the lamp is selected by BR15 and R33 in the figure (BR 15 and R33 can only be selected one way and cannot exist at the same time), when BR15 resistor in the circuit is selected as R33, the battery voltage type LED lamp is supported, and when R33 resistor in the circuit is selected as BR15, the 12v type LED lamp is supported, so that the requirements of LED lamps with a wide range of voltage types can be perfectly met. P4.6 is the control pin of master control chip to the LED lamp, when P4.6 is the high level, then can make triode BQ1 open, after BQ1 opens, triode Q3's base is the low level, then opens triode Q3, can light LED2, when P4.6 is the low level, then can make triode BQ1 close, after BQ1 closes, triode Q3's base is the high level, then closes triode Q3, can extinguish LED 2.

FIG. 7 is a circuit diagram of the interface between the communication module and the external boot device. The switch lead in the figure is an external interface of the on-off control of the whole controller, and the external on-off circuit is determined to be a 12v voltage type on-off circuit or a battery voltage type (generally 24v, 36v, 48v, 64v, 72v and the like) on-off circuit by selecting BR16 and BR17, wherein only one of the two can be selected from the same circuit. The SW is a signal fed back to the controller by the external starting device, when the level of the SW is low, the power supply of the controller is turned on, and when the SW is high or floats, the power supply of the controller is turned off.

In the accompanying fig. 7, the serial port receiving part is a part for communicating with an instrument, the 4 th position of the input end is 3.3V or 5V communication signal input, so the high level of the communication signal is 3.3V or 5V, at this time, the resistor R30 and the resistor voltage drop are 0.9V, the voltage is far higher than the conduction voltage of the emitter of the triode, so the triode BQ2 is turned on, the triode BQ3 is turned off, the port is pulled up to high potential by the R31, and at this time, the level of the output end is high level. When the communication signal is low, the resistor R30 effectively clamps the voltage of the emitter of the triode BQ2, so that the voltage value of the emitter is far lower than the turn-off voltage value of the triode, the triode BQ2 can be turned off quickly, at the moment, the triode BQ2 is cut off, the triode BQ3 provides bias voltage due to the resistor R32, the triode BQ3 is conducted, the chip port is pulled down to be low potential by the BQ3, and therefore the influence of temperature drift of electronic components on the turn-off delay of the triode after temperature rise is restrained. After the resistor R30 is added, the driving capability of the original resistor R11 is insufficient, and the driving capability of the circuit needs to be improved, so that the resistance value of R11 is changed, and the BQ2 triode can be smoothly opened. The resistor R35 ensures that the communication signal is forced to be pulled high when the communication line is idle.

Fig. 8 is a phase CURRENT sampling circuit of a dc brushless motor, where A, B, C points are A, B, C three-phase line interfaces of the motor, respectively, and CURRENT is the S-pole of a three-phase lower tube MOSFET, so that the closer the CURRENT is to the S-pole of the lower tube MOSSFET to be sampled, the better the sampling effect is, in order to reduce the influence of the resistance of the copper foil in the circuit on the sampling. In order to enhance the identification of phase current signals, the signals need to be amplified and then subjected to AD (analog-to-digital) adoption, an operational amplifier is arranged in a main control chip, wherein P4.2, P0.0 and P1.5 are positive input ends of an operational amplifier, P4.3, P0.1 and P1.6 are negative input ends of the operational amplifier, and P4.4, P0.2 and P1.7 are output ends of the operational amplifier.

FIG. 9 shows a Hall signal acquisition module, which is mainly used for acquiring the level of the Hall position sensor signal of the motor, wherein +4.3v is connected with the power supply of the Hall wire of the motor, HA \ HB \ HC is respectively connected with the A \ B \ C phase Hall of the Hall wire of the motor, and GND is connected with the ground wire of the Hall wire of the motor. And P3.4\ P3.3\3.5 is an IO port of the master control IC and is used for reading the high and low levels of the Hall signal of the motor.

Claims

1. A scooter controller is arranged on a PCB and comprises a power supply module, a communication circuit module, an MCU main control chip module, an indicator light module, a tail light module, a motor phase current/battery current sampling module, a motor Hall signal acquisition module, a motor counter electromotive force sampling module and a program updating module; the method is characterized in that: the PCB is also provided with a plug-in MOS module and an MOS drive module of an MOS tube inserted in the plug-in MOS module.

2. The scooter controller of claim 1, wherein: the MOS drive module comprises an A-phase MOS drive module, a B-phase MOS drive module and a C-phase MOS drive module of the three-phase brushless DC motor with the same circuit structure.

3. The scooter controller of claim 2, wherein: the A-phase MOS driving module comprises an upper tube MOSFET MOS3, a lower tube MOSFET MOS4 and an integrated driving chip AU1 of the MOSFET with the driving chip model being FD 2103;

4. The scooter controller of claim 3, wherein: a diode AD2 is also connected in parallel at two ends of the resistor AR5, and the anode of the diode AD2 is connected with the common end of the resistor AR5 connected with the resistor AR 8;

5. The scooter controller of claim 3, wherein: the common end of the resistor AR5 connected with the resistor AR8 is also connected with the phase line A of the three-phase DC brushless motor through a capacitor AC3 and a resistor AR9 respectively; the common terminal of the resistor AR12 connected with the resistor AR11 is also connected with the negative electrode of the power supply through a capacitor AC5 and a resistor AR13 respectively.

6. The scooter controller of claim 1, wherein: the speed regulation fault detection module is used for detecting the fault of disconnection of any line of the speed regulation device; the speed regulation fault detection module comprises a diode D1, a resistor R15, a resistor R12 and a resistor R13;

7. The scooter controller of claim 1, wherein: the brake fault detection module is used for detecting the fault of disconnection of any line of the brake device and comprises a diode D4, a resistor R34, a resistor R14, a resistor R9 and a capacitor C8;

8. The scooter controller of claim 1, wherein: the indicating lamp module is an LED lamp driving module and comprises a triode Q3, a triode BQ1, a resistor R5, a resistor R6, a resistor R24 and a resistor R25;