Wireless control system of electric bicycle

Abstract

An electric bicycle wireless control system comprises a main control assembly and an auxiliary control assembly, and the main control assembly and the auxiliary control assembly conduct signal transmission in a wireless mode. The motor is directly or indirectly connected with the main control central control module, and the main control battery is used for supplying power to the main control assembly; the auxiliary control assembly comprises an auxiliary central control module, an accelerator control module and an auxiliary battery module. The accelerator control module and the auxiliary central control module are connected with the auxiliary battery module and used for supplying power to the auxiliary control assembly. The motor, the main battery and the main controller are integrated on the rear portion of the vehicle to serve as a main control assembly, other assemblies are integrated on the front portion of the vehicle to serve as an auxiliary control assembly, and the main control assembly and the auxiliary control assembly conduct signal transmission in a wireless mode, so that the control structure is simplified, and the cable use amount is reduced; after optimization, data communication is carried out through wireless modes such as Bluetooth, the integration level is improved, and assembly and maintenance are convenient and fast.

Description

Technical Field

[0001] The utility model discloses an electric bicycle, in particular to a wireless control system for the electric bicycle, belonging to the technical field of transportation tools. Background Art

[0002] An electric bicycle (electric vehicle or e-bike) is a vehicle that combines a traditional bicycle with an electric drive system. It typically consists of a battery, an electric motor, and a controller. The electric motor can assist or completely replace human riding. The battery is the core power source of an e-bike, while the electric motor provides auxiliary power, helping the rider reduce physical exertion. The controller is the brains of the e-bike, regulating the operation of the battery and motor and controlling functions such as acceleration and braking. In addition, an e-bike features common bicycle components such as handlebars, brake systems, wheels, and a display. The display typically displays information such as battery charge, speed, and riding mode.

[0003] Electric bicycles are widely used in people's lives because of their advantages such as environmental protection, economy, flexibility, convenience, health and ability to reduce the physical burden of users.

[0004] The electric bicycle control system in the existing technology all adopts a single controller structure. The motor, instrument, brake handle, accelerator, lights, horn and switches are connected to the controller through cables. Since the various actuators are scattered in various parts of the vehicle, the wiring of the electrical part is relatively complicated according to the traditional wiring method. On the one hand, the cables appear to be messy. On the other hand, too many cables can cause damage easily, posing a safety hazard. At the same time, it also makes installation complicated, increases labor costs, and is not convenient for maintenance. Summary of the Invention

[0005] In response to the above-mentioned shortcomings of the prior art in which electric bicycles adopt a single controller structure and all actuators are connected to the controller via cables, the utility model provides an electric bicycle wireless control system, which includes a main control component and an auxiliary control component. The main control component and the auxiliary control component transmit signals wirelessly, simplifying the control structure and reducing the use of cables.

[0006] The utility model solves the technical problem by adopting the following technical solution: a wireless control system for an electric bicycle, the wireless control system includes a main control component and an auxiliary control component, the main control component and the auxiliary control component transmit signals wirelessly;

[0007] The main control assembly includes a main control central control module, an electric motor and a main control battery. The electric motor is directly or indirectly connected to the main control central control module. The main control battery is used to power the main control assembly.

[0008] The auxiliary control assembly includes an auxiliary central control module, a throttle control module and an auxiliary battery module. The throttle control module and the auxiliary central control module are connected to the auxiliary battery module for supplying power to the auxiliary control assembly.

[0009] The technical solution adopted by the utility model to solve its technical problems further includes:

[0010] The main central control module adopts a single-chip microcomputer chip U1, and a Bluetooth module is connected to the serial interface of the main central control module; the auxiliary central control module adopts a Bluetooth chip, the XI interface and XO interface of the Bluetooth chip are connected to a clock module, and the RFIO interface of the Bluetooth chip is connected to a Bluetooth antenna ANT.

[0011] A motor control module and a motor switch module are connected between the main control central control module and the motor. The main control central control module is connected to the control end of the motor control module, the output end of the motor control module is connected to the control end of the motor switch module, the power end of the motor switch module is connected to the main control battery, and the output end of the motor switch module is connected to the motor. The motor includes three groups of control lines, each group of control lines includes a positive line and a negative line, and the three groups of control lines have the same circuit structure. The positive control module of the first group of control lines includes transistors N3, transistors T3 and transistors T6. The base of transistor N3 is connected to a data end of the main control central control module, the emitter of transistor N3 is grounded, the collector of transistor N3 is connected to the +15V power supply, the base of transistor T3 is connected to the emitter of transistor N3, the emitter of transistor T3 is connected to the +15V power supply, and the collector of transistor T3 is connected to the power output end M through resistor R91. U is connected, the base of the transistor T6 is connected to the collector of the transistor T3, the emitter of the transistor T6 is the control signal output terminal DUP, and the collector of the transistor T6 is connected to the power output terminal MU; the negative control module of the first group of control lines includes transistors N8, transistors N9 and transistors N12, the base of the transistor N8 is connected to the +5V power supply, the emitter of the transistor N8 is connected to a data terminal of the main central control module, the collector of the transistor N8 is connected to the +15V power supply through resistor R66, the base of the transistor N9 is connected to the collector of the transistor N8, the emitter of the transistor N9 is connected to the +15V power supply, the collector of the transistor N9 is connected to the power output terminal I_MOTO through resistor R133, the power output terminal I_MOTO is grounded, and the emitter of the transistor N9 is the control signal output terminal DUN. The circuit structures of the other two groups of motor control lines are the same as those of the first group of motor control lines.

[0012] The motor switch module includes MOS transistors V1, V2, V3, V4, V5 and V6. The gate of MOS transistor V1 is connected to the control signal output terminal DWN of the motor control module, the gate of MOS transistor V2 is connected to the control signal output terminal DWP of the motor control module, the gate of MOS transistor V3 is connected to the control signal output terminal DVN of the motor control module, the gate of MOS transistor V4 is connected to the control signal output terminal DVP of the motor control module, and the gate of MOS transistor V5 is connected to the control signal output terminal DVN of the motor control module. The signal output terminal DUN is connected, the gate of the MOS transistor V6 is connected to the control signal output terminal DUP of the motor control module, the source of the MOS transistor V1 and the drain of the MOS transistor V2 are connected to the power output terminal MW, the source of the MOS transistor V3 and the drain of the MOS transistor V4 are connected to the power output terminal MV, the source of the MOS transistor V5 and the drain of the MOS transistor V6 are connected to the power output terminal MU, the drains of the MOS transistors V1, V3 and V5 are all grounded, and the sources of the MOS transistors V2, V4 and V6 are all connected to the +48V power supply.

[0013] The main control central control module is connected to a Hall module for detecting vehicle speed, and the main control central control module is connected to a brake light control module and a tail light control module. The brake light and the tail light are respectively connected to the brake light control module and the tail light control module. The control ends of the brake light control module and the tail light control module are respectively connected to the main control central control module; the main control central control module is connected to a main control temperature detection module, and the main control temperature detection module uses a thermistor NTC.

[0014] The throttle control module includes a resistor R13, a resistor R20 and a capacitor C30. The resistor R13 and the resistor R20 are connected in series, the resistor R13 is connected to the speed regulator interface, the resistor R20 is grounded, the common end of the resistor R13 and the resistor R20 is connected to the universal data port of the auxiliary central control module, and the capacitor C30 is connected in parallel with the resistor R20.

[0015] The auxiliary central control module is connected to a brake module, which includes a resistor R11, a resistor R23 and a capacitor C28. The resistor R11 and the resistor R23 are connected in series, the resistor R11 is connected to the brake interface, the resistor R23 is grounded, the common end of the resistor R11 and the resistor R23 is connected to the universal data port of the auxiliary central control module, and the capacitor C28 is connected in parallel to the resistor R23.

[0016] The auxiliary central control module is connected to a lighting control module, which mainly includes a transistor Q4 and a MOS transistor Q14. The base of the transistor Q4 is connected to the universal data port of the auxiliary central control module, the emitter of the transistor Q4 is grounded, the collector of the transistor Q4 is connected to the gate of the MOS transistor Q14, the source of the MOS transistor Q14 is connected to the +12V power supply, and the drain of the MOS transistor Q14 is connected to the lighting interface; the auxiliary central control module is connected to a steering module, which includes a steering input module, a left steering output module and a right steering output module. The steering input module includes a Connect the steering switch interface SW2, resistor R33, resistor R34, capacitor C29, resistor R12, resistor R22 and capacitor C4. Resistors R33 and R34 are connected in series between the +3.3V power supply and the general data port of the auxiliary central control module. The general data port of the auxiliary central control module serves as the left steering input interface. The common end of resistors R33 and R34 is connected to the first channel of the steering switch interface SW2. The common end of resistors R33 and R34 is grounded through capacitor C29. Resistors R12 and R22 are connected in series between the +3.3V power supply and the auxiliary central control module. The universal data port of the auxiliary central control module is used as the right steering input interface, the common end of the resistor R12 and the resistor R22 is connected to the second channel of the steering switch interface SW2, the common end of the resistor R12 and the resistor R22 is grounded through the capacitor C4, and the third channel of the steering switch interface SW2 is grounded. The steering switch connected to the steering switch interface SW2 can connect the left steering input interface or the right steering input interface to the ground, thereby inputting left steering information or right steering information; the left steering output module includes a transistor Q8 and a transistor Q7, the base of the transistor Q8 is connected to the auxiliary central control module. The universal data port of the auxiliary central control module is connected, the emitter of the transistor Q8 is grounded, the collector of the transistor Q8 is connected to the base of the transistor Q7, the emitter of the transistor Q7 is connected to the +12V power supply, and the collector of the transistor Q7 is connected to the left turn signal interface; the right turn output module includes a transistor Q10 and a transistor Q9, the base of the transistor Q10 is connected to the universal data port of the auxiliary central control module, the emitter of the transistor Q10 is grounded, the collector of the transistor Q10 is connected to the base of the transistor Q9, the emitter of the transistor Q9 is connected to the +12V power supply, and the collector of the transistor Q9 is connected to the right turn signal interface.

[0017] The auxiliary central control module is connected to a backup input module, which includes an interface SW1 for connecting a backup switch, a resistor R35, a resistor R36, a capacitor C34, a resistor R25, a resistor R29 and a capacitor C43. The resistors R35 and R36 are connected in series between the +3.3V power supply and the general data port of the auxiliary central control module. The general data port of the auxiliary central control module serves as the first backup input interface. The common end of the resistors R35 and R36 is connected to the first channel of the interface SW1 of the steering switch. The common end of the resistors R35 and R36 is grounded through the capacitor C34. The resistors R25 and R29 are connected in series between the +3.3V power supply and the general data port of the auxiliary central control module. The general data port of the auxiliary central control module serves as the first backup input interface. 9 is connected in series between the +3.3V power supply and the universal data port of the auxiliary central control module. The universal data port of the auxiliary central control module serves as a second backup input interface. The common end of the resistor R25 and the resistor R29 is connected to the second channel of the interface SW1 of the backup switch. The common end of the resistor R25 and the resistor R29 is grounded through the capacitor C43. The third channel of the interface SW1 of the backup switch is grounded. The auxiliary central control module is connected to a buzzer module. The buzzer module includes a transistor Q2 and a buzzer BUZZER. The base of the transistor Q2 is connected to the universal data port of the auxiliary central control module, the emitter of the transistor Q2 is grounded, and the transistor Q The collector of 2 is connected to one end of the buzzer BUZZER, and the other end of the buzzer BUZZER is connected to the +12V power supply; the auxiliary central control module is connected to a light sensing module, which includes a resistor R40, a resistor R49, a phototransistor OC1 and a capacitor C33. One end of the resistor R40 is connected to the +3.3V power supply, and the other end of the resistor R40 is connected to the collector of the phototransistor OC1. The emitter of the phototransistor OC1 is grounded, and the collector of the phototransistor OC1 is connected to the universal data port of the auxiliary central control module through the series-connected resistor R49. The capacitor C33 is connected between the universal data port of the auxiliary central control module and the ground. The auxiliary central control module is connected to a six-axis sensor U5; the auxiliary central control module is connected to a data display module, which includes a digital tube display U3, a diode D1 and a diode D2. The DIN interface of the digital tube display U3 is connected to the universal data port of the auxiliary central control module through the diode D1, and the CLK interface of the digital tube display U3 is connected to the universal data port of the auxiliary central control module through the diode D2. The DIN interface of the digital tube display U3 is connected to the +5V power supply through the current limiting resistor R61, and the CLK interface of the digital tube display U3 is connected to the +5V power supply through the current limiting resistor R28.

[0018] The main control battery adopts a power battery, which directly provides +48V power supply to drive the motor. The +48V power supply is reduced to +15V through the DC-DC step-down chip U2 for power supply, and the +15V is reduced to +5V through the voltage regulator chip for power supply; the auxiliary battery module adopts a lithium battery for power supply, and the lithium battery is reduced to +12V through the boost chip PU1 for power supply, and the lithium battery is stabilized to +5V through the voltage regulator chip for +5V power supply, and the +5V power supply is reduced to +3.3V through the step-down chip U4 for +3.3V power supply.

[0019] The beneficial effects of the present invention are as follows: the present invention integrates the motor, main battery and main controller at the rear of the vehicle as the main control component, and integrates other components at the front of the vehicle as auxiliary control components. The main control component and the auxiliary control component transmit signals wirelessly, which simplifies the control structure and reduces the use of cables. After optimization, data communication is carried out through wireless methods such as Bluetooth, which reduces the use of cables, improves integration, and facilitates assembly and maintenance.

[0020] The present invention will be further described below with reference to the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a block diagram of an electric bicycle controller circuit in the prior art.

[0022] Figure 2 This is a circuit block diagram of the electric bicycle controller in this utility model.

[0023] Figure 3 This is a partial circuit schematic diagram of the central control module of the main control assembly in this utility model.

[0024] Figure 4 This is a partial circuit schematic diagram of the first motor control line of the main control component in the present utility model.

[0025] Figure 5 This is a partial circuit diagram of the second motor control line of the main control component in the present utility model.

[0026] Figure 6 This is a partial circuit schematic diagram of the third motor control line of the main control component in the present utility model.

[0027] Figure 7 This is a partial circuit schematic diagram of the fourth motor control line of the main control component in the present utility model.

[0028] Figure 8 This is a partial circuit schematic diagram of the fifth motor control line of the main control component in the present utility model.

[0029] Figure 9This is a partial circuit schematic diagram of the sixth motor control line of the main control component in the present utility model.

[0030] Figure 10 This is a circuit schematic diagram of the motor control line portion of the main control component in this utility model.

[0031] Figure 11 This is the circuit principle diagram of the motor control line filter part of the main control component in this utility model.

[0032] Figure 12 This is a circuit diagram of the first power conversion part of the main control component in the present utility model.

[0033] Figure 13 This is a circuit diagram of the second power conversion part of the main control component in the present utility model.

[0034] Figure 14 This is a schematic diagram of the power interface circuit of the main control component in this utility model.

[0035] Figure 15 This is a partial circuit schematic diagram of the motor switch module of the main control component in the utility model.

[0036] Figure 16 This is a partial circuit schematic diagram of the Hall communication module of the main control component in this utility model.

[0037] Figure 17 This is a partial circuit schematic diagram of the Hall interface module of the main control component in this utility model.

[0038] Figure 18 This is a partial circuit schematic diagram of the communication interface module of the main control component in this utility model.

[0039] Figure 19 This is a partial circuit schematic diagram of the speed control interface module of the main control component in this utility model.

[0040] Figure 20 This is a partial circuit schematic diagram of the brake control interface module of the main control component in this utility model.

[0041] Figure 21 This is a partial circuit schematic diagram of the brake control switch module of the main control component in this utility model.

[0042] Figure 22 This is a partial circuit schematic diagram of the main battery interface module of the main control component in this utility model.

[0043] Figure 23 This is a partial circuit schematic diagram of the actuation control interface module of the main control component in the present utility model.

[0044] Figure 24This is a circuit schematic diagram of the interface module part of the main control component in this utility model.

[0045] Figure 25 This is a partial circuit schematic diagram of the first power module of the auxiliary control component in the present utility model.

[0046] Figure 26 This is a partial circuit schematic diagram of the second power module of the auxiliary control component in the present utility model.

[0047] Figure 27 This is a partial circuit schematic diagram of the central control module of the auxiliary control component in the utility model.

[0048] Figure 28 This is a partial circuit schematic diagram of the six-axis sensor module of the auxiliary control component in the utility model.

[0049] Figure 29 This is a schematic diagram of the circuit of the display module of the auxiliary control component in the present utility model.

[0050] Figure 30 This is a schematic diagram of the power on / off and serial port module circuits of the auxiliary control component in this utility model.

[0051] Figure 31 This is a schematic diagram of the circuit diagram of the light sensor and buzzer module of the auxiliary control component in the utility model.

[0052] Figure 32 This is a partial circuit schematic diagram of the steering interface module of the auxiliary control component in the present utility model.

[0053] Figure 33 This is a partial circuit schematic diagram of the backup interface module of the auxiliary control component in the present utility model.

[0054] Figure 34 This is a partial circuit schematic diagram of the lighting interface module of the auxiliary control component in the present utility model.

[0055] Figure 35 This is a partial circuit schematic diagram of the turn signal interface module of the auxiliary control component in the present utility model. DETAILED DESCRIPTION

[0056] This embodiment is a preferred implementation of the present utility model. Other embodiments whose principles and basic structures are the same or similar to those of this embodiment are within the protection scope of the present utility model.

[0057] Please refer to the attached Figure 2 To the attached Figure 35The utility model mainly protects a wireless control system for electric bicycles. The control system mainly includes a main control component and an auxiliary control component. The main control component and the auxiliary control component transmit signals wirelessly. The main control component is mainly used to control the motor, and it can also be called an electronic control component. The relevant parts of the auxiliary control component are mostly installed on the handlebar or the operation control part is on the handlebar, and it can also be called a handlebar component.

[0058] In this embodiment, the main control component mainly includes a main control central control module, an electric motor and a main control battery. The electric motor is directly or indirectly connected to the main control central control module, and the operation of the electric motor is controlled by the main control central control module. The main control battery is used to power the main control component.

[0059] In this embodiment, the auxiliary control component mainly includes an auxiliary central control module, a throttle control module and an auxiliary battery module. The throttle control module is connected to the auxiliary central control module. The throttle control module outputs throttle control information to the auxiliary central control module. The auxiliary battery module is used to power the auxiliary control component.

[0060] In this embodiment, the main central control module adopts a single-chip microcomputer chip U1 of model GPM8F3132C. During specific implementation, single-chip microcomputer chips of other models or series may be used instead.

[0061] In this embodiment, a motor control module and a motor switch module are connected between the main central control module and the motor. The main central control module is connected to the control end of the motor control module, the output end of the motor control module is connected to the control end of the motor switch module, the power end of the motor switch module is connected to the main control battery, and the output end of the motor switch module is connected to the motor to drive the motor to work.

[0062] In this embodiment, the motor includes three groups of control lines, each group of control lines includes a positive line and a negative line, and the motor control module controls them respectively. In this embodiment, they are distinguished by U, V, and W. The circuit structure of the three groups of control lines is the same. The following takes one group as an example to illustrate it. The positive control module of the first group of control lines includes transistor N3, transistor T3 and transistor T6. The base of transistor N3 is connected to a data terminal of the main control central control module, the emitter of transistor N3 is grounded, the collector of transistor N3 is connected to the +15V power supply, the base of transistor T3 is connected to the emitter of transistor N3, the emitter of transistor T3 is connected to the +15V power supply, the collector of transistor T3 is connected to the power output terminal MU through resistor R91, and the base of transistor T6 is connected to the transistor. The collector of transistor T3 is connected to the control signal output terminal DUP, and the emitter of transistor T6 is connected to the power output terminal MU. The negative control module of the first group of control lines includes transistors N8, N9, and N12. The base of transistor N8 is connected to the +5V power supply, the emitter of transistor N8 is connected to a data terminal of the main central control module, the collector of transistor N8 is connected to the +15V power supply through resistor R66, the base of transistor N9 is connected to the collector of transistor N8, the emitter of transistor N9 is connected to the +15V power supply, the collector of transistor N9 is connected to the power output terminal I_MOTO through resistor R133, the power output terminal I_MOTO is grounded, and the emitter of transistor N9 is the control signal output terminal DUN. In this embodiment, one group of control lines is used as an example. The circuit structures of the other two groups are the same, at least the interface names are different, and they will not be described here.

[0063] In this embodiment, the motor switch module includes MOS transistors V1, V2, V3, V4, V5, and V6. The gate of MOS transistor V1 is connected to the control signal output terminal DWN of the motor control module, the gate of MOS transistor V2 is connected to the control signal output terminal DWP of the motor control module, the gate of MOS transistor V3 is connected to the control signal output terminal DVN of the motor control module, the gate of MOS transistor V4 is connected to the control signal output terminal DVP of the motor control module, and the gate of MOS transistor V5 is connected to the control signal output terminal DVN of the motor control module. The control signal output terminal DUN is connected, the gate of the MOS transistor V6 is connected to the control signal output terminal DUP of the motor control module, the source of the MOS transistor V1 and the drain of the MOS transistor V2 are connected to the power output terminal MW, the source of the MOS transistor V3 and the drain of the MOS transistor V4 are connected to the power output terminal MV, the source of the MOS transistor V5 and the drain of the MOS transistor V6 are connected to the power output terminal MU, the drains of the MOS transistors V1, V3 and V5 are all grounded, and the sources of the MOS transistors V2, V4 and V6 are all connected to the +48V power supply.

[0064] In this embodiment, the main control battery is a power battery that can directly provide +48V power to drive the motor. The +48V power is stepped down to +15V by the SD4938 DC-DC step-down chip U2 for power supply. The +15V is then stepped down to +5V by the 7805 voltage regulator chip for power supply.

[0065] In this embodiment, the main central control module is connected to a Hall module for detecting vehicle speed.

[0066] In this embodiment, the main central control module is connected to a brake light control module and a tail light control module, and the brake lights and tail lights are connected to the brake light control module and the tail light control module respectively. The control ends of the brake light control module and the tail light control module are respectively connected to the main central control module. In this embodiment, the brake light control module and the tail light control module are respectively implemented with current limiting resistors, and the brake lights and / or tail lights are directly driven to work by a +5V power supply using a current injection method.

[0067] In this embodiment, the main central control module is connected to a main temperature detection module for detecting the battery temperature. When the battery temperature is too high, an alarm is issued. The main temperature detection module uses a thermistor NTC.

[0068] In this embodiment, Bluetooth is used for wireless communication. The master central control module is a simple MCU without Bluetooth functionality. A Bluetooth module is connected to the serial port of the master central control module for Bluetooth communication. In specific implementations, an MCU with built-in Bluetooth functionality or a Bluetooth chip with MCU functionality can also be used as the master central control module. In this embodiment, Bluetooth is used for wireless communication. In specific implementations, RF or other wireless communication methods can also be used for communication.

[0069] In this embodiment, the auxiliary central control module uses a Bluetooth chip model RTL8752CM, which has its own MCU function and can realize conventional operations and switch control. The XI interface and XO interface of the Bluetooth chip are connected to a clock module, and the clock module uses a quartz crystal oscillator CY1 with a frequency of 40MHz. The RFIO interface of the Bluetooth chip is connected to a Bluetooth antenna ANT for wireless communication. In specific implementation, the Bluetooth chip can also use chips of other models or other series, or the auxiliary central control module can also use an MCU plus a Bluetooth chip or other wireless communication chip to communicate wirelessly with the main control component.

[0070] In this embodiment, the throttle control module includes a resistor R13, a resistor R20, and a capacitor C30. Resistors R13 and R20 are connected in series. Resistor R13 is connected to the interface of the speed regulator (i.e., the throttle controller or speed controller). Resistor R20 is grounded. The common terminal of resistors R13 and R20 is connected to the universal data port (P2.6) of the auxiliary central control module. Capacitor C30 is connected in parallel with resistor R20. When the speed regulator rotates, the resistance of the connected resistors changes, thereby causing a voltage change. The universal data port of the auxiliary central control module detects the voltage value at the common terminal of resistors R13 and R20 to determine the speed adjustment of the speed regulator.

[0071] In this embodiment, a brake module is connected to the auxiliary central control module, and the brake module outputs brake information to the auxiliary central control module. The brake module includes a resistor R11, a resistor R23, and a capacitor C28. The resistors R11 and R23 are connected in series, the resistor R11 is connected to the brake (or vehicle brake) interface, the resistor R23 is grounded, the common end of the resistors R11 and R23 is connected to the universal data port (P2.7) of the auxiliary central control module, and the capacitor C28 is connected in parallel with the resistor R23. When the brake is applied, the resistance value of the connected resistor will change, thereby causing a voltage change. The universal data port of the auxiliary central control module detects the voltage value of the common end of the resistors R11 and R23 to determine whether a braking operation has been performed.

[0072] In this embodiment, a lighting control module is connected to the auxiliary central control module. The lighting control module primarily includes a transistor Q4 and a MOS transistor Q14. The base of the transistor Q4 is connected to the universal data port (P0.2) of the auxiliary central control module. The emitter of the transistor Q4 is grounded. The collector of the transistor Q4 is connected to the gate of the MOS transistor Q14. The source of the MOS transistor Q14 is connected to a +12V power supply. The drain of the MOS transistor Q14 is connected to the lighting interface. The on / off of the transistor Q4 is controlled by the universal data port of the auxiliary central control module, and the on / off of the MOS transistor Q14 is controlled by the transistor Q4, thereby controlling whether the lighting lamp is powered on, that is, whether the lighting lamp is lit.

[0073] In this embodiment, the auxiliary central control module is connected to a steering module, which includes a steering input module, a left steering output module, and a right steering output module. The steering input module includes an interface SW2 for connecting a steering switch, a resistor R33, a resistor R34, a capacitor C29, a resistor R12, a resistor R22, and a capacitor C4. The resistors R33 and R34 are connected in series between a +3.3V power supply and a general data port (P2.4) of the auxiliary central control module. The general data port (P2.4) of the auxiliary central control module ) as the left steering input interface, the common end of resistors R33 and R34 is connected to the first channel of the steering switch interface SW2, and the common end of resistors R33 and R34 is grounded through capacitor C29. Resistors R12 and R22 are connected in series between the +3.3V power supply and the general data port (P2.5) of the auxiliary central control module. The general data port (P2.5) of the auxiliary central control module serves as the right steering input interface. The common end of resistors R12 and R22 is connected to the second channel of the steering switch interface SW2 The common end of the resistor R12 and the resistor R22 is grounded through the capacitor C4, and the third channel of the steering switch interface SW2 is grounded. The steering switch connected to the steering switch interface SW2 can conduct the left steering input interface or the right steering input interface to the ground, thereby inputting left steering information or right steering information; the left steering output module includes a transistor Q8 and a transistor Q7, the base of the transistor Q8 is connected to the universal data port (P0.5) of the auxiliary central control module, the emitter of the transistor Q8 is grounded, and the collector of the transistor Q8 is connected to the ground. The electrode is connected to the base of the transistor Q7, the emitter of the transistor Q7 is connected to the +12V power supply, and the collector of the transistor Q7 is connected to the left turn signal interface; the right turn output module includes a transistor Q10 and a transistor Q9, the base of the transistor Q10 is connected to the universal data port (P0.6) of the auxiliary central control module, the emitter of the transistor Q10 is grounded, the collector of the transistor Q10 is connected to the base of the transistor Q9, the emitter of the transistor Q9 is connected to the +12V power supply, and the collector of the transistor Q9 is connected to the right turn signal interface.

[0074] In this embodiment, a backup input module is connected to the auxiliary central control module. The backup input module includes an interface SW1 for connecting to a backup switch, a resistor R35, a resistor R36, a capacitor C34, a resistor R25, a resistor R29, and a capacitor C43. The resistors R35 and R36 are connected in series between a +3.3V power supply and a universal data port (P5.0) of the auxiliary central control module. The universal data port (P5.0) of the auxiliary central control module serves as a first backup input interface. The common end of the resistors R35 and R36 is connected to the first channel of the interface SW1 of the steering switch. The common end of the resistors R35 and R36 is connected to the first channel of the interface SW1 of the steering switch. The resistors R25 and R29 are connected to ground through capacitor C34, and are connected in series between the +3.3V power supply and the general data port (P0.4) of the auxiliary central control module. The general data port (P0.4) of the auxiliary central control module serves as a second backup input interface. The common end of the resistors R25 and R29 is connected to the second channel of the interface SW1 of the backup switch. The common end of the resistors R25 and R29 is connected to ground through capacitor C43. The third channel of the interface SW1 of the backup switch is grounded. The backup information can be defined by the user by connecting the backup switch on the interface SW1 of the backup switch to ground.

[0075] In this embodiment, a buzzer module is connected to the auxiliary central control module. The buzzer module includes a transistor Q2 and a buzzer. The base of the transistor Q2 is connected to the universal data port (P0.1) of the auxiliary central control module, the emitter of the transistor Q2 is grounded, the collector of the transistor Q2 is connected to one end of the buzzer, and the other end of the buzzer is connected to a +12V power supply. The buzzer can be controlled by the auxiliary central control module to sound an alarm or a whistle.

[0076] In this embodiment, a light sensing module is connected to the auxiliary central control module. The light sensing module includes a resistor R40, a resistor R49, a phototransistor OC1, and a capacitor C33. One end of the resistor R40 is connected to a +3.3V power supply, and the other end of the resistor R40 is connected to the collector of the phototransistor OC1. The emitter of the phototransistor OC1 is grounded. The collector of the phototransistor OC1 is connected to the universal data port (P2.2) of the auxiliary central control module via the series resistor R49. The capacitor C33 is connected between the universal data port (P2.2) of the auxiliary central control module and ground. The phototransistor OC1 can detect the ambient light intensity. When the ambient light intensity is low, the lighting can be automatically controlled to light up to prevent accidents.

[0077] In this embodiment, a six-axis sensor U5 is connected to the auxiliary central control module. The six-axis sensor U5 adopts a six-axis sensor with model IMU-ICM-40607-K. During specific implementation, other types of multi-axis sensors or posture sensors can also be used to detect vehicle status information, such as tilt, fall, uphill, downhill, etc. The six-axis sensor U5 is connected to the auxiliary central control module through an asynchronous serial interface.

[0078] In this embodiment, a data display module is connected to the auxiliary central control module. The data display module includes a digital tube display screen U3, a diode D1, and a diode D2. The data display module is configured in an open-drain output mode and communicates with the auxiliary central control module using a serial interface. The DIN interface of the digital tube display screen U3 is connected to the universal data port (P3.2) of the auxiliary central control module via the diode D1, and the CLK interface of the digital tube display screen U3 is connected to the universal data port (P3.3) of the auxiliary central control module via the diode D2. The DIN interface of the digital tube display screen U3 is connected to the +5V power supply via the current-limiting resistor R61, and the CLK interface of the digital tube display screen U3 is connected to the +5V power supply via the current-limiting resistor R28.

[0079] In this embodiment, the auxiliary battery module is powered by a lithium battery. The lithium battery is stepped down to +12V by the boost chip PU1 for power supply. The lithium battery is stabilized to +5V by the voltage regulator chip for +5V power supply. The +5V power supply is stepped down to +3.3V by the step-down chip U4 for +3.3V power supply.

[0080] The utility model integrates the motor, main battery and main controller at the rear of the vehicle as the main control component, and integrates other components at the front of the vehicle as auxiliary control components. The main control component and the auxiliary control component transmit signals wirelessly, which simplifies the control structure and reduces the use of cables. After optimization, data communication is carried out through wireless methods such as Bluetooth, which reduces the use of cables, improves integration, and facilitates assembly and maintenance.

Claims

1. A wireless control system for an electric bicycle, characterized by: The wireless control system includes a main control component and an auxiliary control component, and the main control component and the auxiliary control component transmit signals wirelessly; The main control assembly includes a main control central control module, an electric motor and a main control battery. The electric motor is directly or indirectly connected to the main control central control module. The main control battery is used to power the main control assembly. The auxiliary control assembly includes an auxiliary central control module, a throttle control module and an auxiliary battery module. The throttle control module and the auxiliary central control module are connected to the auxiliary battery module for supplying power to the auxiliary control assembly.

2. The electric bicycle wireless control system according to claim 1, characterized in that: The main central control module adopts a single-chip microcomputer chip U1, and a Bluetooth module is connected to the serial interface of the main central control module; the auxiliary central control module adopts a Bluetooth chip, the XI interface and XO interface of the Bluetooth chip are connected to a clock module, and the RFIO interface of the Bluetooth chip is connected to a Bluetooth antenna ANT.

3. The electric bicycle wireless control system according to claim 1, characterized in that: A motor control module and a motor switch module are connected between the main control central control module and the motor. The main control central control module is connected to the control end of the motor control module, the output end of the motor control module is connected to the control end of the motor switch module, the power end of the motor switch module is connected to the main control battery, and the output end of the motor switch module is connected to the motor. The motor includes three groups of control lines, each group of control lines includes a positive line and a negative line, and the three groups of control lines have the same circuit structure. The positive control module of the first group of control lines includes transistors N3, transistors T3 and transistors T6. The base of transistor N3 is connected to a data end of the main control central control module, the emitter of transistor N3 is grounded, the collector of transistor N3 is connected to the +15V power supply, the base of transistor T3 is connected to the emitter of transistor N3, the emitter of transistor T3 is connected to the +15V power supply, and the collector of transistor T3 is connected to the power output end M through resistor R91. U is connected, the base of the transistor T6 is connected to the collector of the transistor T3, the emitter of the transistor T6 is the control signal output terminal DUP, and the collector of the transistor T6 is connected to the power output terminal MU; the negative control module of the first group of control lines includes transistors N8, transistors N9 and transistors N12, the base of the transistor N8 is connected to the +5V power supply, the emitter of the transistor N8 is connected to a data terminal of the main central control module, the collector of the transistor N8 is connected to the +15V power supply through resistor R66, the base of the transistor N9 is connected to the collector of the transistor N8, the emitter of the transistor N9 is connected to the +15V power supply, the collector of the transistor N9 is connected to the power output terminal I_MOTO through resistor R133, the power output terminal I_MOTO is grounded, and the emitter of the transistor N9 is the control signal output terminal DUN. The circuit structures of the other two groups of motor control lines are the same as those of the first group of motor control lines.

4. The electric bicycle wireless control system according to claim 3, characterized in that: The motor switch module includes MOS transistors V1, V2, V3, V4, V5 and V6. The gate of MOS transistor V1 is connected to the control signal output terminal DWN of the motor control module, the gate of MOS transistor V2 is connected to the control signal output terminal DWP of the motor control module, the gate of MOS transistor V3 is connected to the control signal output terminal DVN of the motor control module, the gate of MOS transistor V4 is connected to the control signal output terminal DVP of the motor control module, and the gate of MOS transistor V5 is connected to the control signal output terminal DVN of the motor control module. The signal output terminal DUN is connected, the gate of the MOS transistor V6 is connected to the control signal output terminal DUP of the motor control module, the source of the MOS transistor V1 and the drain of the MOS transistor V2 are connected to the power output terminal MW, the source of the MOS transistor V3 and the drain of the MOS transistor V4 are connected to the power output terminal MV, the source of the MOS transistor V5 and the drain of the MOS transistor V6 are connected to the power output terminal MU, the drains of the MOS transistors V1, V3 and V5 are all grounded, and the sources of the MOS transistors V2, V4 and V6 are all connected to the +48V power supply.

5. The electric bicycle wireless control system according to claim 1, characterized in that: The main control central control module is connected to a Hall module for detecting vehicle speed, and the main control central control module is connected to a brake light control module and a tail light control module. The brake light and the tail light are respectively connected to the brake light control module and the tail light control module. The control ends of the brake light control module and the tail light control module are respectively connected to the main control central control module; the main control central control module is connected to a main control temperature detection module, and the main control temperature detection module uses a thermistor NTC.

6. The electric bicycle wireless control system according to claim 1, characterized in that: The throttle control module includes a resistor R13, a resistor R20 and a capacitor C30. The resistor R13 and the resistor R20 are connected in series, the resistor R13 is connected to the speed regulator interface, the resistor R20 is grounded, the common end of the resistor R13 and the resistor R20 is connected to the universal data port of the auxiliary central control module, and the capacitor C30 is connected in parallel with the resistor R20.

7. The electric bicycle wireless control system according to claim 1, characterized in that: The auxiliary central control module is connected to a brake module, which includes a resistor R11, a resistor R23 and a capacitor C28. The resistor R11 and the resistor R23 are connected in series, the resistor R11 is connected to the brake interface, the resistor R23 is grounded, the common end of the resistor R11 and the resistor R23 is connected to the universal data port of the auxiliary central control module, and the capacitor C28 is connected in parallel to the resistor R23.

8. The electric bicycle wireless control system according to claim 1, characterized in that: The auxiliary central control module is connected to a lighting control module, which mainly includes a transistor Q4 and a MOS transistor Q14. The base of the transistor Q4 is connected to the universal data port of the auxiliary central control module, the emitter of the transistor Q4 is grounded, the collector of the transistor Q4 is connected to the gate of the MOS transistor Q14, the source of the MOS transistor Q14 is connected to the +12V power supply, and the drain of the MOS transistor Q14 is connected to the lighting interface; the auxiliary central control module is connected to a steering module, which includes a steering input module, a left steering output module, and a right steering output module. The steering input module includes an interface SW2 for connecting to a steering switch, a resistor R33, a resistor R34, a capacitor C29, a resistor R12, a resistor R22, and a capacitor C4. The resistors R33 and R34 are connected in series between the +3.3V power supply and the universal data port of the auxiliary central control module. The universal data port of the auxiliary central control module serves as a left steering input interface. The common end of the resistors R33 and R34 is connected to the first pass of the interface SW2 of the steering switch. The common end of the resistor R33 and the resistor R34 is grounded through the capacitor C29, the resistor R12 and the resistor R22 are connected in series between the +3.3V power supply and the universal data port of the auxiliary central control module, and the universal data port of the auxiliary central control module serves as the right steering input interface. The common end of the resistor R12 and the resistor R22 is connected to the second channel of the interface SW2 of the steering switch, and the common end of the resistor R12 and the resistor R22 is grounded through the capacitor C4. The third channel of the interface SW2 of the steering switch is grounded, which can be connected through The steering switch connected to the steering switch interface SW2 connects the left steering input interface or the right steering input interface to ground, thereby inputting left steering information or right steering information. The left steering output module includes transistors Q8 and Q7. The base of transistor Q8 is connected to the universal data port of the auxiliary central control module, the emitter of transistor Q8 is grounded, the collector of transistor Q8 is connected to the base of transistor Q7, the emitter of transistor Q7 is connected to the +12V power supply, and the collector of transistor Q7 is connected to the left turn signal interface. The right turn output module includes transistor Q10 and transistor Q9. The base of transistor Q10 is connected to the universal data port of the auxiliary central control module, the emitter of transistor Q10 is grounded, the collector of transistor Q10 is connected to the base of transistor Q9, the emitter of transistor Q9 is connected to the +12V power supply, and the collector of transistor Q9 is connected to the right turn signal interface.

9. The wireless control system for an electric bicycle according to claim 1, characterized in that: The auxiliary central control module is connected to a backup input module, which includes an interface SW1 for connecting a backup switch, a resistor R35, a resistor R36, a capacitor C34, a resistor R25, a resistor R29 and a capacitor C43. The resistors R35 and R36 are connected in series between the +3.3V power supply and the general data port of the auxiliary central control module. The general data port of the auxiliary central control module serves as the first backup input interface. The common end of the resistors R35 and R36 is connected to the first channel of the interface SW1 of the steering switch. The common end of the resistors R35 and R36 is grounded through the capacitor C34. The resistors R25 and R29 are connected in series between the +3.3V power supply and the general data port of the auxiliary central control module. The general data port of the auxiliary central control module serves as the first backup input interface. 9 is connected in series between the +3.3V power supply and the universal data port of the auxiliary central control module. The universal data port of the auxiliary central control module serves as a second backup input interface. The common end of the resistor R25 and the resistor R29 is connected to the second channel of the interface SW1 of the backup switch. The common end of the resistor R25 and the resistor R29 is grounded through the capacitor C43. The third channel of the interface SW1 of the backup switch is grounded. The auxiliary central control module is connected to a buzzer module. The buzzer module includes a transistor Q2 and a buzzer BUZZER. The base of the transistor Q2 is connected to the universal data port of the auxiliary central control module, the emitter of the transistor Q2 is grounded, and the transistor Q The collector of 2 is connected to one end of the buzzer BUZZER, and the other end of the buzzer BUZZER is connected to the +12V power supply; the auxiliary central control module is connected to a light sensing module, which includes a resistor R40, a resistor R49, a phototransistor OC1 and a capacitor C33. One end of the resistor R40 is connected to the +3.3V power supply, and the other end of the resistor R40 is connected to the collector of the phototransistor OC1. The emitter of the phototransistor OC1 is grounded, and the collector of the phototransistor OC1 is connected to the universal data port of the auxiliary central control module through the series-connected resistor R49. The capacitor C33 is connected between the universal data port of the auxiliary central control module and the ground. The auxiliary central control module is connected to a six-axis sensor U5; the auxiliary central control module is connected to a data display module, which includes a digital tube display U3, a diode D1 and a diode D2. The DIN interface of the digital tube display U3 is connected to the universal data port of the auxiliary central control module through the diode D1, and the CLK interface of the digital tube display U3 is connected to the universal data port of the auxiliary central control module through the diode D2. The DIN interface of the digital tube display U3 is connected to the +5V power supply through the current limiting resistor R61, and the CLK interface of the digital tube display U3 is connected to the +5V power supply through the current limiting resistor R28.

10. The wireless control system for an electric bicycle according to claim 1, characterized in that: The main control battery adopts a power battery, which directly provides +48V power supply to drive the motor. The +48V power supply is reduced to +15V through the DC-DC step-down chip U2 for power supply, and the +15V is reduced to +5V through the voltage regulator chip for power supply; the auxiliary battery module adopts a lithium battery for power supply, and the lithium battery is reduced to +12V through the boost chip PU1 for power supply, and the lithium battery is stabilized to +5V through the voltage regulator chip for +5V power supply, and the +5V power supply is reduced to +3.3V through the step-down chip U4 for +3.3V power supply.

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