Electric bicycle control system

Abstract

The invention relates to an electric bicycle control system which is used for performing integrated control on a motor and a battery of an electric bicycle, the battery is electrically connected with the motor and is used for supplying power to the operation of an electrode, and the electric bicycle control system comprises a rotating speed sensor which is arranged at a rotating shaft of the motor and is used for detecting the rotating speed of the motor; the data input end of the control processor is connected with the rotating speed sensor, the control output end of the control processor is in communication connection with the motor and the battery through a CAN bus communication module, and the control processor is used for outputting a control instruction to the motor and controlling the working state of the motor; and the control panel is in communication connection with the control processor through an LIN bus communication module. According to the application, the working state of the electric bicycle can be acquired in real time, real-time control can be realized based on an LIN bus and CAN bus mechanism, and the driving safety of the electric bicycle is improved.

Description

Technical Field

[0001] The invention relates to the technical field of electric vehicle control, and in particular to a system for controlling an electric bicycle. Background Art

[0002] The common electric bicycle controller can realize the voltage conversion between the battery and the motor, and at the same time realize the control of different motor speeds through the change of the manual throttle, so that the electric bicycle motor can work to assist in moving. In the prior art, the electric bicycle controller indirectly infers and calculates the direction, rotation position and temperature of the motor through the current change between the three-phase power lines (U / V / W) of the motor. It is necessary to obtain the working parameters of the motor through calculation, and the data collection is slow, resulting in information processing. In addition, there is no communication bus system in the existing electric bicycle controller, and the motor cannot be directly controlled through the communication bus system. The power supply of the battery can only be adjusted, and it can only serve as an intermediate hub to assist the operation of the electric bicycle, and it is impossible to comprehensively realize the control of the battery and the motor. Summary of the invention

[0003] The purpose of the present invention is to provide an electric bicycle control system, which can realize real-time collection of the working status of the electric bicycle, and can realize real-time control based on the LIN bus and CAN bus mechanisms, thereby improving the driving safety of the electric bicycle.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] The present invention provides an electric bicycle control system for integrated control of a motor and a battery of the electric bicycle, wherein the battery is electrically connected to the motor and is used to supply power to the electrodes. The electric bicycle control system comprises:

[0006] A speed sensor, arranged at the rotating shaft of the motor, for detecting the speed of the motor;

[0007] A control processor, whose data input end is connected to the speed sensor, and whose control output end is connected to the motor and the battery through a CAN bus communication module, for outputting control instructions to the motor and controlling the working state of the motor;

[0008] The control panel is communicatively connected with the control processor via a LIN bus communication module.

[0009] For the above technical solution, the applicant has further optimization measures.

[0010] Optionally, a position sensor is provided in the motor of the electric bicycle, and the position sensor is connected to the control processor and is used to feed back the rotation position and running direction of the motor to the control processor.

[0011] Optionally, a temperature sensor is provided in the motor of the electric bicycle, and the temperature sensor is connected to the control processor to feed back the operating temperature of the motor to the control processor.

[0012] Optionally, a voltage detection module and / or a current detection module is provided in the motor of the electric bicycle, and the voltage detection module and the current detection module are both connected to the control processor for feeding back the working voltage and working current of the motor to the control processor.

[0013] Optionally, the control panel is provided with a display for displaying operating parameters of the electric bicycle.

[0014] Optionally, the user implements active control based on the LIN bus mode with the control processor through the operation configuration at the control panel, and the data collection and control based on the CAN bus mode between the control processor and the motor and battery are used for real-time monitoring and control.

[0015] Optionally, the control panel and the control processor communicate with each other using a handshake data mode based on a LIN bus mode.

[0016] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0017] The electric bicycle control system of the present invention adds a speed sensor, a position sensor, a temperature sensor, a current and voltage detection module, etc. to the system to realize real-time collection of the working status of the electric bicycle. Combined with the LIN bus communication module and the CAN bus communication module in the system, the establishment of a human-computer interaction system for the electric bicycle is realized. The user can understand the running status of the electric bicycle in real time and make control through the matching control panel, which can improve the user's control over the driving status of the bicycle during use and improve driving safety.

[0018] In addition, the LIN bus communication module is responsible for data communication between the motor control processor and external input control components such as the control panel, while the CAN bus communication module is responsible for data communication between the motor, the battery and the control processor. This makes the electric bicycle more intelligent and can achieve efficient human-computer interaction functions. Through active control by the user, the motor speed / torque can be automatically adjusted. At the same time, it can perform handshake data communication with the control unit of the electric bicycle battery, reduce the ineffective work of the battery, increase the battery driving range, and improve the energy-saving and emission-reduction effects of the electric bicycle. The problem of battery energy loss can be solved under the premise of realizing real-time monitoring / control. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0020] Figure 1 is a schematic structural diagram of an electric bicycle control system according to an embodiment of the present invention;

[0021] Figure 2 for Figure 1 The circuit structure diagram of the CAN bus communication module in the electric bicycle control system shown;

[0022] Figure 3 for Figure 1 A schematic diagram of the circuit structure of a control processor in the electric bicycle control system shown;

[0023] Figure 4 It is a structural schematic diagram of the transmission circuit of an electric bicycle;

[0024] Figure 5 This is a circuit diagram of the CPU in the transmission circuit of an electric bicycle;

[0025] Figure 6 This is the circuit diagram of the Bluetooth module in the transmission circuit of an electric bicycle;

[0026] Figure 7 It is a schematic diagram of the structure of the positioning assembly of the electric bicycle;

[0027] Figure 8 An exploded view of positioning components for an electric bicycle;

[0028] Fig. 9 Module connection diagram for positioning components of electric bicycles;

[0029] Fig.10 The circuit diagram of the CAN communication module in the electric bicycle positioning group;

[0030] Fig.11 Circuit diagram of the control module in the positioning group for an electric bicycle. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] This embodiment describes an electric bicycle control system for integrated control of a motor and a battery of an electric bicycle, wherein the battery is electrically connected to the motor and is used to supply power to the electrodes. Figure 1 As shown, the electric bicycle control system includes:

[0035] A speed sensor, arranged at the rotating shaft of the motor, for detecting the speed of the motor;

[0036] The control processor has a data input terminal connected to the speed sensor, and a control output terminal connected to the motor and the battery through a CAN bus communication module, and is used to output control instructions to the motor and control the working state of the motor. The circuit structure of the control processor is as follows: Figure 3 As shown, the circuit structure of the CAN bus communication module is as follows Figure 2 As shown;

[0037] The control panel is communicatively connected with the control processor via a LIN bus communication module.

[0038] In one embodiment, a position sensor is disposed in the motor of the electric bicycle, and the position sensor is connected to the control processor to feed back the rotation position and running direction of the motor to the control processor.

[0039] In one embodiment, a temperature sensor is disposed in the motor of the electric bicycle, and the temperature sensor is connected to the control processor to feed back the operating temperature of the motor to the control processor.

[0040] In one embodiment, a voltage detection module and / or a current detection module is provided in the motor of the electric bicycle. The voltage detection module and the current detection module are both connected to the control processor for feeding back the working voltage and working current of the motor to the control processor.

[0041] The electric bicycle control system of this embodiment adds a speed sensor, a position sensor, a temperature sensor, and a current and voltage detection module to the system to realize real-time collection of the working status of the electric bicycle. Combined with the LIN bus communication module and the CAN bus communication module in the system, the establishment of a human-computer interaction system for the electric bicycle is realized. The user can understand the operating status of the electric bicycle in real time and control it through the matching control panel, which can enhance the user's control over the driving status of the bicycle during use and improve driving safety.

[0042] In one embodiment, the control panel is equipped with a display for displaying the operating parameters of the electric bicycle. The user realizes active control between the control processor and the control processor based on the LIN bus mode through the operation configuration at the control panel. The control processor and the motor and the battery perform data acquisition and control based on the CAN bus mode for real-time monitoring and control. The control panel and the control processor, and the control processor and the control unit of the battery perform handshake data communication based on the LIN bus mode.

[0043] The LIN bus communication module is responsible for data communication between the motor control processor and external input control components such as the control panel, while the CAN bus communication module is responsible for data communication between the motor, the battery and the control processor. This makes the electric bicycle more intelligent and can achieve efficient human-computer interaction. Through active control by the user, the motor speed / torque can be automatically adjusted. At the same time, it can perform handshake data communication with the control unit of the electric bicycle battery, reduce the ineffective power of the battery, increase the battery driving range, and improve the energy-saving and emission-reduction effects of the electric bicycle. The problem of battery energy loss can be solved under the premise of realizing real-time monitoring / control.

[0044] In addition, the electric bicycle transmission circuit can be used to control the speed of the electric bicycle in real time. Figure 4 As shown, the electric bicycle transmission circuit mainly includes a sensor, a three-phase DC brushless motor driver, a CPU, a power module, a first switching power supply, a second switching power supply and a third switching power supply.

[0045] Among them, the sensor is used to monitor the speed of the electric bicycle, and a conventional commercially available Hall sensor can be used; specifically, it is necessary to pre-install a magnet ring on the motor of the electric bicycle so that the Hall sensor cooperates with the pre-installed magnet ring to monitor the speed of the electric bicycle. The three-phase DC brushless motor driver is connected to the three-phase motor, and is used to receive control instructions and convert them into motor control signals to achieve control of the three-phase motor (i.e., corresponding to the output power of the three-phase motor). The CPU is respectively connected to the sensor and the three-phase DC brushless motor driver, and is used to convert the monitoring signal of the sensor into a control instruction for the three-phase DC brushless motor driver, which can be used as follows Figure 5 The microcontroller shown. The power module is connected to the three-phase DC brushless motor driver for supplying power to the three-phase DC brushless motor driver; the first switching power supply is connected to the power module and the three-phase DC brushless motor driver respectively, for adjusting the output voltage of the power module and supplying the three-phase DC brushless motor driver; in this embodiment, the first switching power supply is a 12V switching power supply; the power module cooperates with the first switching power supply to ensure the normal operation of the three-phase DC brushless motor driver. The second switching power supply is connected to the first switching power supply for adjusting the output voltage of the first switching power supply; in this embodiment, the second switching power supply is a 5.0V switching power supply; the third switching power supply is connected to the CPU and the sensor respectively to supply power to them; and the third switching power supply is a 3.3V switching power supply; it can be seen that the second switching power supply and the third switching power supply are respectively used to supply power to part of the structure of the electric bicycle transmission circuit (the first switching power supply, the second switching power supply and the third switching power supply are commercially available, as long as the voltage conversion can be achieved). In this way, the output of the three-phase motor can be directly adjusted according to the speed of the electric bicycle sensed by the sensor to achieve real-time speed change of the electric bicycle, and the speed regulation delay is low.

[0046] In this embodiment, the electric bicycle transmission circuit also includes a CAN module (conventional existing ones can be used) connected to the CPU for inputting CAN signals to the CPU, and the second switching power supply and the third switching power supply are also connected to the CAN module to supply power to it. The electric bicycle transmission circuit also includes a Bluetooth module connected to the CPU for inputting Bluetooth signals to the CPU, and its circuit diagram is shown in FIG. Figure 6 .

[0047] In this embodiment, the electric bicycle transmission circuit also includes a display module installed on the electric bicycle and connected to the CPU, the display module has a UI LED and a UI button respectively connected to the CPU; the third switch power supply is also respectively connected to the UI LED and the UI button to power them. The display module can be directly installed on the electric bicycle, and the display module further has a flash chip connected to the CPU, and the flash chip is also connected to the third switch power supply, so that the user can understand the operation of the electric bicycle in real time according to the UI LED and the UI button and can make control.

[0048] The electric bicycle positioning assembly can also be installed on an electric automatic vehicle. Figures 7 to 9 As shown, it mainly includes a box body 11, a cover plate 12, a battery module, a PLC control board 16 and an external cable 17, etc.

[0049] The box body 11 mainly includes an integrally formed shell 111 and a ring shell 115. The shell 111 is open as a whole, specifically, it is closed on five sides and open on the top, and it is closed on five sides and forms a receiving cavity 112 in the middle; a partition 113 is arranged in the shell 111 to divide the receiving cavity into two parts (the two parts of the receiving cavity formed by the separation are usually of different sizes, that is, forming two parts, one large and one small); a first lead hole 114 is opened on the side wall of the shell 111. The ring shell 115 is formed on the end face ( Figure 7It is usually formed in one piece on the upper end surface of the shell 111; it should be noted that: the cross-sectional area (horizontal cross-section) of the ring shell 115 is larger than the end surface area of ​​the shell 111, and the wall thickness of the ring shell 115 is the same as or slightly different from the wall thickness of the shell 111, so that a step 116 is formed between the end surface of the shell 111 and the ring shell 115. The battery module is at least one group. Each group of battery modules includes a power supply module 14 installed in the accommodating cavity by means of a thermal conductive tape 13 and a thermal conductive foam 15 formed on the other surface of the power supply module 14; in this embodiment, the battery modules are in two groups, one group is used and the other group is spare, and they are respectively installed in the two parts of the accommodating cavity 112 by means of thermal conductive tape 13. The PLC control board 16 is arranged at the step portion 116 and connected to the power supply module 14 (so that the power supply module 14 can be used to supply power to the PLC control board 16 to ensure its normal operation). At this time, the surface of the PLC control board 16 is in contact with the thermal conductive foam 15, so that the PLC control board 16 can be limited by the step portion 116 and bonded by the thermal conductive foam 15, thereby realizing double fixation of the PLC control board 16. The cover plate 12 is detachably mounted in the ring housing 115, and the detachable manner can adopt the existing conventional method. The external cable 17 is respectively connected to the power supply module 14 and the PLC control board 16, and extends to the outside of the box body 11 through the first lead hole 114, which is used for signal transmission and power supply to other electrical parts. In this way, a closed accommodating structure with a compact structure and an accommodating cavity 112 is formed by the shell 111, the ring shell 115 and the cover plate 12. At the same time, thermal conductive foam 15 and thermal conductive tape 13 are respectively arranged on both sides of the power supply module 14. This is conducive to reducing the volume of the positioning component and improving the compactness of its structure. It can also conduct the heat generated by the power supply module 14 to other parts in time to reduce the risk of thermal runaway of the power supply module.

[0050] In this embodiment, a plurality of snap-fit ​​protrusions 117 are arranged at intervals on the inner wall of the ring housing 115, and a plurality of snap-fit ​​seats matching the snap-fit ​​protrusions 117 are formed on the inner surface of the cover plate 12, thereby realizing the detachable installation of the cover plate 12. A cushion block 18 matching the accommodating cavity is formed on the lower surface of the PLC control board 16, and the cushion block 18 can abut against a power supply module 14, thereby realizing the auxiliary limiting and installation of the power supply module 14.

[0051] In this embodiment, the PLC control board 16 has a control module 161 (such as Fig.11 ), a CAN communication module 163 (see FIG. 1 ) connected to the control module 161 and communicating with the electric bicycle display and / or control button Fig.10), an LTE-M network module 162 connected to the control module 161, a GPS module 164 connected to the control module 161, a WIFI module 165 connected to the control module 161, and a BLE module 166 connected to the control module 161 (each module can be commercially available and connected in accordance with the existing conventional connection method). Such a matching positioning component uses the GPS module 164, the WIFI module 165, the BLE module 166 and other structures for cooperation, which can overcome the communication rate problem between the existing positioning component and the satellite (it is impossible to send / receive the real-time position of the electric bicycle in real time, and the chip-level GPS chip has a blind spot effect, resulting in a slow return speed of the point information), making the electric bicycle more intelligent, and can realize efficient human-computer interaction functions. Through active control by the user, the location information, battery information parameters, etc. of the electric bicycle can be viewed in real time. At the same time, through the CAN communication module, the battery power ineffective work is reduced under the premise of ensuring that the product is produced by the power supplier, the battery driving range is improved, and the energy-saving and emission-reduction lamp environmental protection effect of the electric bicycle is improved.

[0052] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the contents of the present invention and implement them accordingly. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric bicycle control system, used for integrated control of the motor and battery of the electric bicycle, wherein the battery is electrically connected to the motor and used to supply power to the electrode, characterized in that: The electric bicycle control system includes: A speed sensor, arranged at the rotating shaft of the motor, for detecting the speed of the motor; A control processor, whose data input end is connected to the speed sensor, and whose control output end is connected to the motor and the battery through a CAN bus communication module, for outputting control instructions to the motor and controlling the working state of the motor; The control panel is communicatively connected with the control processor via a LIN bus communication module.

2. The electric bicycle control system according to claim 1, characterized in that: A position sensor is arranged inside the motor of the electric bicycle. The position sensor is connected to the control processor and is used to feed back the rotation position and running direction of the motor to the control processor.

3. The electric bicycle control system according to claim 1, characterized in that: A temperature sensor is arranged inside the motor of the electric bicycle. The temperature sensor is connected to the control processor and is used to feed back the working temperature of the motor to the control processor.

4. The electric bicycle control system according to claim 1, characterized in that: A voltage detection module and / or a current detection module is provided in the motor of the electric bicycle. The voltage detection module and the current detection module are both connected to the control processor and are used to feed back the working voltage and working current of the motor to the control processor.

5. The electric bicycle control system according to claim 1, characterized in that: The control panel is provided with a display for displaying the operating parameters of the electric bicycle.

6. The electric bicycle control system according to claim 1, characterized in that: The user realizes active control between the control processor and the motor and battery based on the CAN bus mode through the operation configuration at the control panel, and the data collection and control between the control processor and the motor and the battery are based on the CAN bus mode for real-time monitoring and control.

7. The electric bicycle control system according to claim 6, characterized in that: The control panel and the control processor communicate with each other in a handshake data manner based on the LIN bus mode.

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