An electronic continuously variable speed bicycle transmission system

Abstract

The present invention belongs to the field of electronic transmission technology, and specifically relates to an electronic continuously variable transmission system for bicycles, including a brushless generator, a primary sensor, a boost component, a high-speed electronic switch four, a secondary sensor, a high-speed electronic switch five, a third sensor, an electronic speed regulator and a brushless power motor connected by a circuit, wherein the brushless power motor is electrically connected to the electronic speed regulator, and the electronic speed regulator is used to drive the reaction speed of the brushless power motor, wherein the brushless generator, the primary sensor, the boost component, the high-speed electronic switch four, the secondary sensor, the high-speed electronic switch five, the third sensor, the electronic speed regulator and the brushless power motor are all controlled by a microcontroller unit (MCU). The present invention meets riders who have higher requirements for the quality of life, and improves a more comfortable experience for fitness, commuting, and leisure bicycles during riding, and has a wider range of applications and stronger adaptability to market demand.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic transmission, and in particular relates to an electronic continuously variable speed bicycle transmission system. Background Art

[0002] The transmission part of ordinary bicycles (including power-assisted bicycles and two-wheeled and three-wheeled electric vehicles driven by pedal power) is chain and gear transmission, and less commonly, transmission shaft transmission. All of them have no speed change function or only rely on a few fixed ratio gears manually.

[0003] However, the above situation has the following disadvantages: the transmission part is a mechanical moving part, which requires maintenance and has a high failure rate, especially for those with mechanical shifting function. Even if there is a mechanical shifting function, it needs to be operated manually, which is cumbersome and inconvenient, and it may not necessarily switch to the appropriate gear. The limited gears result in a small ratio coverage, and there are only a few fixed gears, so the shifting process cannot achieve a smooth and continuous effect. In summary, bicycles using conventional transmission methods cannot achieve the effects of maintenance-free, low failure rate, large ratio range, and adaptive continuous shifting. Summary of the invention

[0004] The purpose of the present invention is to provide an electronic continuously variable bicycle transmission system that can meet the needs of riders with higher quality of life, enhance the comfortable riding experience of fitness, commuting, and leisure bicycles, and has a wider range of applications and is more adaptable to market demand.

[0005] The technical solution adopted by the present invention is as follows:

[0006] An electronic continuously variable speed bicycle transmission system, comprising:

[0007] A brushless generator is adapted to be mounted on a vehicle.

[0008] A primary sensor is electrically connected to the brushless generator.

[0009] A boost component is electrically connected to the primary sensor.

[0010] A high-speed electronic switch four is electrically connected to the boost component for control.

[0011] A secondary sensor is electrically connected to the high-speed electronic switch.

[0012] A high-speed electronic switch five is electrically connected to the secondary sensor.

[0013] A three-stage sensor is electrically connected to a high-speed electronic switch.

[0014] An electronic speed regulator is electrically connected to the three-stage sensor.

[0015] A brushless power motor is electrically connected to an electronic speed regulator, and the electronic speed regulator is used to drive the reaction speed of the brushless power motor.

[0016] Among them, the brushless generator, primary sensor, boost component, high-speed electronic switch fourth and second sensors, high-speed electronic switch fifth and third sensors, electronic speed regulator and brushless power motor mentioned above are all controlled by a micro control unit (MCU).

[0017] A diode is also provided between the secondary sensor and the high-speed electronic switch 5 to prevent reverse flow of electric energy, thereby ensuring unidirectional flow of current.

[0018] A high-power energy storage module for energy buffering is also arranged between the secondary sensor and the high-speed electronic switch 5.

[0019] The storage capacity of the high-power energy storage module is defined as BCT.

[0020] Among them, the full charge of the high-power energy storage module is 1, and the empty charge is 0.

[0021] The boost component includes a high-speed electronic switch 1, a high-speed electronic switch 2 and a high-speed electronic switch 3 connected in parallel.

[0022] The boost component also includes a primary DCDC boost module and a secondary DCDC boost module connected in series.

[0023] The high-speed electronic switch 1 and the high-speed electronic switch 2 are electrically connected and controlled with the primary DCDC boost module and the secondary DCDC boost module, and the high-speed electronic switch 3 is connected with the output end of the secondary boost module.

[0024] The high-speed electronic switch 1, high-speed electronic switch 2 and high-speed electronic switch 3 are all controlled by a microcontroller unit (MCU), and the five high-speed electronic switches can all be PWM modulated, wherein a fully closed state is defined as 1, a fully open state is defined as 0, and an initial state is 0.

[0025] The electronic speed regulator defines the throttle signal as THR.

[0026] Among them, the throttle signal full output is 1, zero output is 0, and the initial value is 0.

[0027] Define the electronic speed controller signal receiving cycle constant as T ESC.

[0028] Define a constant throttle sensitivity constant KTHR, which is used to adjust the response speed of THR.

[0029] An electronic continuously variable transmission bicycle transmission system comprises the following operating steps:

[0030] Step 1: measure the power generated by the brushless generator when the rider pedals, and output the DC voltage after synchronous rectification. The microcontroller unit (MCU) collects the voltage data of the primary sensor. If the power generation voltage is sufficient for charging the energy buffer module, the process proceeds to step 4. If the voltage is lower than that of step 4, the process proceeds to step 2.

[0031] Step 2: If the generated voltage is sufficient for the input of the secondary DCDC boost module, then the process goes to step 4 after the boost, and then the microcontroller unit (MCU) controls the electronic switch to disconnect the high-speed electronic switch 1 and the high-speed electronic switch 2, and close the high-speed electronic switch 3 and the high-speed electronic switch 4, otherwise the process goes to step 3;

[0032] Step 3: If the generated voltage is sufficient for the input of the first-stage DCDC boost module, the first-stage DCDC boost module and the second-stage DCDC boost module will step up the voltage step by step and then enter step 4; if it is insufficient, jump to step 1;

[0033] Among them, if the voltage is not lower than the rated output voltage of the first-stage DCDC boost module, but lower than the rated output voltage of the second-stage DCDC boost module, the MCU controls the electronic switch to disconnect the high-speed electronic switch 1 and the high-speed electronic switch 3, and close the high-speed electronic switch 2 and the high-speed electronic switch 4, and then enter step 6;

[0034] Step 4: measure the generated power and send a throttle signal to the electronic speed regulator to make the output power of the brushless power motor equal to the generated power, so that the overall power generation and power consumption are balanced;

[0035] Among them, if the voltage is not lower than the rated input voltage of the first-stage DCDC boost module, but lower than the rated output voltage of the first-stage DCDC boost module, the MCU controls the electronic switch to disconnect the high-speed electronic switch 2 and the high-speed electronic switch 3, and close the high-speed electronic switch 1 and the high-speed electronic switch 4, and then enter step 6;

[0036] Step 5: If the power generation is still greater than the output power of the brushless motor when the throttle signal of the electronic speed regulator has reached the maximum, the power generation is limited by modulating the electronic switch through PWM to balance the overall power generation and power consumption;

[0037] If the voltage is lower than the rated input voltage of the first-stage DCDC boost module, the MCU controls to disconnect the high-speed electronic switch 1, the high-speed electronic switch 2, the high-speed electronic switch 3, and the high-speed electronic switch 4, and then enters step 1;

[0038] Step 6: MCU collects the effective power generation data of the secondary sensor;

[0039] Step 7, MCU sends a control signal to ESC, and PWM modulates high-speed electronic switch 4, based on the principle of maximizing transmission power, so that the power measured by the third-level sensor is equal to that of the second-level sensor;

[0040] Among them, when the power of the high-power energy storage module is high, the power data measured by the third-level sensor is greater than that of the second-level sensor, otherwise the power data measured by the third-level sensor is less than that of the second-level sensor, so that the BT module is in a half-power state as much as possible, which is beneficial to extend its service life and maintain the best working state. The power difference between the third-level sensor and the second-level sensor is balanced by the BT module;

[0041] Step 8: Return to step 1 and enter the next cycle.

[0042] The operation steps are applicable to two-wheeled bicycles, three-wheeled bicycles or electric two-wheeled vehicles or three-wheeled vehicles driven by electricity.

[0043] The technical effects achieved by the present invention are:

[0044] In the present invention, the transmission mode of the entire system is changed from traditional mechanical transmission to an energy transmission mode in which mechanical energy is converted into electrical energy and then into mechanical energy, thereby avoiding mechanical loss of transmission and mechanical failure of transmission; secondly, when the brushless generator is in a low speed state and the DC voltage generated is too low, energy can still be effectively utilized through single-stage or multi-stage boosting, thereby making up for the disadvantage that the energy conversion efficiency is too low or even cannot be converted under this working condition.

[0045] The present invention can make the transmission system of bicycles and the like achieve the effects of maintenance-free, low failure rate, large ratio range, and adaptive continuous gear shifting, eliminating the trouble of chain dropping and the trouble of gear oiling, and no need for manual gear shifting, and no need to worry about inappropriate gear shifting, and no sense of frustration at the moment of gear shifting, giving people a smooth riding experience. When users pursue a better riding experience, this transmission system is of great application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of the framework structure of the electronic continuously variable transmission system of the present invention;

[0047] Figure 2 It is a schematic diagram of the principle structure of the electronic continuously variable transmission system of the present invention. DETAILED DESCRIPTION

[0048] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe an electronic continuously variable transmission bicycle transmission system or several specific implementations of the present invention, and does not strictly limit the protection scope of the specific claims of the present invention.

[0049] like Figure 1 As shown in:

[0050] GMOTOR—brushless generator;

[0051] A / V—sensor;

[0052] SW1—high-speed electronic switch 1;

[0053] SW2—high-speed electronic switch 2;

[0054] SW3—High-speed electronic switch three;

[0055] SW4—high-speed electronic switch four;

[0056] SW5—high-speed electronic switch five;

[0057] D—diode;

[0058] BT—high power energy storage module;

[0059] ESC—Electronic Speed ​​Controller;

[0060] Motor—Brushless power motor.

[0061] like Figure 1 As shown in: an electronic continuously variable speed bicycle transmission system, including a brushless generator, the brushless generator is adapted to be mounted on a vehicle, wherein the brushless generator can be a pedal-type synchronous rectification output.

[0062] The primary sensor is electrically connected to the brushless generator. After the brushless generator is started, the primary sensor senses and works, and the microcontroller unit (MCU) collects the primary voltage data of the sensor.

[0063] A boost component, the boost component is electrically connected to the primary sensor, and the boost component includes a high-speed electronic switch 1, a high-speed electronic switch 2, and a high-speed electronic switch 3 connected in parallel;

[0064] The boost component also includes a primary DCDC boost module and a secondary DCDC boost module connected in series;

[0065] The high-speed electronic switch 1 and the high-speed electronic switch 2 are electrically connected and controlled with the primary DCDC boost module and the secondary DCDC boost module, and the high-speed electronic switch 3 is connected with the output end of the secondary boost module;

[0066] High-speed electronic switch 1, high-speed electronic switch 2 and high-speed electronic switch 3 are all controlled by a microcontroller unit (MCU). All five high-speed electronic switches can perform PWM modulation, wherein a fully closed state is defined as 1, a fully open state is defined as 0, and an initial state is 0.

[0067] High-speed electronic switch four, high-speed electronic switch four is electrically connected to the boost component for control.

[0068] The secondary sensor is electrically connected to the high-speed electronic switch.

[0069] The high-speed electronic switch five is electrically connected to the secondary sensor.

[0070] The three-stage sensor is electrically connected to the high-speed electronic switch.

[0071] Electronic speed governor, the electronic speed governor is electrically connected with the three-stage sensor, and the electronic speed governor defines the throttle signal as THR;

[0072] Among them, the full output of the throttle signal is 1, the zero output is 0, and the initial value is 0;

[0073] Define the electronic speed controller signal receiving cycle constant as T ESC, for example 5ms, as the value decreases, the reaction speed becomes faster;

[0074] Define a constant throttle sensitivity constant K THR. The throttle sensitivity constant K THR is used to adjust the response speed of THR. For example, 0.005, as the value increases, the sensitivity increases.

[0075] The brushless power motor is electrically connected to an electronic speed regulator, and the electronic speed regulator is used to drive the reaction speed of the brushless power motor.

[0076] Among them, the above-mentioned brushless generator, primary sensor, boost component, high-speed electronic switch fourth and second level sensors, high-speed electronic switch fifth and third level sensors, electronic speed regulator and brushless power motor are all controlled by a micro control unit (MCU).

[0077] According to the above structure, the three sensors are all voltage and current sensors, and the measured data are transmitted to the micro control unit (MCU).

[0078] When Brake—BOOL value, it indicates whether it is in braking state, the default value is 0;

[0079] When EPASS is a BOOL value, it indicates whether the system is transmitting, and the default value is 0;

[0080] like Figure 1 As shown in the figure, US1, IS1, US2, IS2, US3, IS3 are the measured values ​​of the corresponding voltage and current sensors, and

[0081] Define U1in as the minimum input voltage constant of the first-level DCDC boost module;

[0082] Define U2in as the minimum input voltage constant of the secondary DCDC boost module;

[0083] Define U1out as the rated output voltage constant of the first-stage DCDC boost module, where U1out>U2in;

[0084] Define U2out as the rated output voltage constant of the secondary DCDC boost module.

[0085] A diode is also provided between the secondary sensor and the high-speed electronic switch 5 to prevent reverse flow of electric energy, thereby ensuring unidirectional flow of current.

[0086] A high-power energy storage module for energy buffering is also provided between the secondary sensor and the high-speed electronic switch 5. A power lithium battery pack, a supercapacitor battery pack, etc. can be used. The BT module is required to have a low self-discharge rate (there are other electronic devices on the bicycle that require electricity to avoid power outages of the electronic devices when not in use for a long time). Because it is used as energy buffer, there are no high requirements for the capacity of the module. The storage capacity of the high-power energy storage module is defined as BCT. The full charge of the high-power energy storage module is 1, and the empty charge is 0. The optimal storage capacity of BT is defined as BTC B (usually 0.5), and an adjustment coefficient K (value less than 1, such as 0.5) is defined to adjust the module storage capacity so that BTC is close to BTC B.

[0087] When the power level of the high-power energy storage module is high, the power data measured by the tertiary sensor is greater than that of the secondary sensor. Conversely, the power data measured by the tertiary sensor is less than that of the secondary sensor. This keeps the BT module in a half-power state as much as possible, which is beneficial for extending its service life and maintaining the best working state. The power difference between the tertiary sensor and the secondary sensor is balanced by the BT module.

[0088] The operating steps of the system in this application are as follows:

[0089] Step 1: MCU obtains sensor data BTC, Brake, US1, IS1, US2, IS2, US3, and IS3.

[0090] Step 2:

[0091] SW1=(US1>=U1in&&US1 <U2in),

[0092] SW2=(US1>=U2in&&US1 <U2out),

[0093] SW3=(US1>=U2out).

[0094] Step 3:

[0095] SW4=SW4*EPASS,

[0096] SW5=EPASS,

[0097] EPASS=! Brake&&(US1>=U1in),

[0098] THR=THR*EPASS,

[0099] If EPASS==0, wait until the next TESC cycle and jump to step 1.

[0100] Step 4: If (THR<1&&US3*IS3<=(US2*IS2*((BTC-BTCB)*K+1))) then THR=THR+KTHR, and check the THR value, if (THR>1) then THR=1, and then jump to step 8.

[0101] Step 5: If (THR==1&&US3*IS3<=(US2*IS2*((BTC-BTCB)*K+1))) then SW4=SW4-KTHR, and check the SW4 value, if (SW4<0) then SW4=0, and then jump to step 8.

[0102] Step 6: If (SW4<1&&US3*IS3>(US2*IS2*((BTC-BTCB)*K+1))) then SW4=SW4+KTHR, and check the SW4 value, if (SW4>1) then SW4=1, and then jump to step 8.

[0103] Step 7: If (SW4==1&&US3*IS3>(US2*IS2*((BTC-BTCB)*K+1))) then THR=THR-KTHR, and check the THR value, if (THR<0) then THR=0, and then jump to step 8.

[0104] Step eight, MCU sends control signals to high-speed electronic switches SW1, SW2, SW3, SW4, SW5 and ESC according to the calculated SW1, SW2, SW3, SW4, SW5 and THR data.

[0105] Step nine, wait until the next TESC cycle, then return to step one and enter the next cycle.

[0106] The above operation steps are applicable to two-wheeled bicycles, three-wheeled bicycles or electric two-wheeled vehicles, three-wheeled vehicles, etc. driven by electricity.

[0107] The working principle of the present invention is as follows: Step 1, measuring the power generated by the brushless generator driven by the rider, outputting a DC voltage after synchronous rectification, and a microcontroller unit (MCU) collecting voltage data of a primary sensor, and if the power generation voltage is sufficient for charging the energy buffer module, then step 4 is entered, and if the voltage is lower than that of step 4, then step 2 is entered;

[0108] Step 2: If the generated voltage is sufficient for the input of the secondary DCDC boost module, then the process goes to step 4 after the boost, and then the microcontroller unit (MCU) controls the electronic switch to disconnect the high-speed electronic switch 1 and the high-speed electronic switch 2, and close the high-speed electronic switch 3 and the high-speed electronic switch 4, otherwise the process goes to step 3;

[0109] Step 3: If the generated voltage is sufficient for the input of the first-stage DCDC boost module, the first-stage DCDC boost module and the second-stage DCDC boost module will step up the voltage step by step and then enter step 4; if it is insufficient, jump to step 1;

[0110] Among them, if the voltage is not lower than the rated output voltage of the first-stage DCDC boost module, but lower than the rated output voltage of the second-stage DCDC boost module, the MCU controls the electronic switch to disconnect the high-speed electronic switch 1 and the high-speed electronic switch 3, and close the high-speed electronic switch 2 and the high-speed electronic switch 4, and then enter step 6;

[0111] Step 4: measure the generated power and send a throttle signal to the electronic speed regulator to make the output power of the brushless power motor equal to the generated power, so that the overall power generation and power consumption are balanced;

[0112] Among them, if the voltage is not lower than the rated input voltage of the first-stage DCDC boost module, but lower than the rated output voltage of the first-stage DCDC boost module, the MCU controls the electronic switch to disconnect the high-speed electronic switch 2 and the high-speed electronic switch 3, and close the high-speed electronic switch 1 and the high-speed electronic switch 4, and then enter step 6;

[0113] Step 5: If the power generation is still greater than the output power of the brushless motor when the throttle signal of the electronic speed regulator has reached the maximum, the power generation is limited by modulating the electronic switch through PWM to balance the overall power generation and power consumption;

[0114] If the voltage is lower than the rated input voltage of the first-stage DCDC boost module, the MCU controls to disconnect the high-speed electronic switch 1, the high-speed electronic switch 2, the high-speed electronic switch 3, and the high-speed electronic switch 4, and then enters step 1;

[0115] Step 6: MCU collects the effective power generation data of the secondary sensor;

[0116] Step 7, MCU sends a control signal to ESC, and PWM modulates high-speed electronic switch 4, based on the principle of maximizing transmission power, so that the power measured by the third-level sensor is equal to that of the second-level sensor;

[0117] Among them, when the power of the high-power energy storage module is high, the power data measured by the third-level sensor is greater than that of the second-level sensor, otherwise the power data measured by the third-level sensor is less than that of the second-level sensor, so that the BT module is in a half-power state as much as possible, which is beneficial to extend its service life and maintain the best working state. The power difference between the third-level sensor and the second-level sensor is balanced by the BT module;

[0118] Step 8: Return to step 1 and enter the next cycle.

[0119] Taking the transmission methods commonly used in rickshaws (usually bicycles) as an example, there are fixed single-gear chain transmission, multi-gear multi-ratio gear chain transmission, and less common transmission shaft transmission. They have various disadvantages:

[0120] 1. The ratio range is small or there is no ratio range at all, which results in a small adaptable speed range for the vehicle. In certain speed ranges, it will either feel very strenuous or feel like it is not working;

[0121] 2. Even if there is a gear shifting function, there are only a few gears. You may encounter a situation where one gear seems a bit difficult to shift but another gear seems a bit difficult to shift. However, you cannot increase the gears indefinitely, otherwise the gear shifting mechanism will be too complicated, which will lead to a high failure rate, high maintenance cost and high purchase cost.

[0122] 3. Even if there is a gear shifting function, it still needs manual operation, which consumes human energy. Moreover, after selecting the gear, the selected gear may not be suitable for people. People need to change gears repeatedly to try and find the gear that they feel most comfortable, which makes the whole process more cumbersome.

[0123] 4. The mechanical transmission mechanism has a high failure rate, such as the frequent chain falling and other problems, and it is troublesome to maintain. It needs to be cleaned and lubricated regularly, otherwise mechanical failures will often occur.

[0124] After using the transmission system provided by the present invention: the system's ratio range is greatly increased, the adaptability is wide, and the adaptability to the market is strong, and its range will be determined by the electrical performance of the brushless generator and the brushless power motor; the system has no gear concept, and belongs to a continuous stepless transmission system, which can eliminate the sense of frustration when shifting gears; the system transmits by directly transmitting electrical energy, and can adapt to the optimal ratio, without manual operation or trying different gears back and forth; the transmission system is a solid-state electronic device, without active mechanical parts, and can be closed and three-proofed, with a low failure rate, and can easily achieve maintenance-free. If the transmission system provided by the present invention is used, the main active mechanical components on the entire rickshaw will only be wheels and pedals, the product will become extremely simple, and the failure rate and maintenance rate of the vehicle body will be reduced. Compared with the traditional vehicle body, the service life is longer, and at the same time, the use process is simple and the user feels comfortable.

[0125] The method proposed in the present invention is applicable to various human-powered vehicles, including but not limited to two-wheeled bicycles, three-wheeled bicycles, power-assisted bicycles with human-powered function, electric two-wheeled or three-wheeled vehicles with human-powered function, etc.

[0126] The above are only preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the art unless otherwise specified and limited.

Claims

1. An electronic continuously variable transmission bicycle transmission system, characterized in that: include: A brushless generator, wherein the brushless generator is adapted to be mounted on a vehicle; A primary sensor, the primary sensor is electrically connected to the brushless generator; A boost component, the boost component is electrically connected to the primary sensor; A high-speed electronic switch four, wherein the high-speed electronic switch four is electrically connected to the boost component for control; A secondary sensor, the secondary sensor being electrically connected to the high-speed electronic switch; A high-speed electronic switch 5, wherein the high-speed electronic switch 5 is electrically connected to the secondary sensor; A three-stage sensor, the three-stage sensor being electrically connected to a high-speed electronic switch; An electronic speed regulator, the electronic speed regulator being electrically connected to the three-stage sensor; A brushless power motor, wherein the brushless power motor is electrically connected to an electronic speed regulator, and the electronic speed regulator is used to drive the reaction speed of the brushless power motor; The brushless generator, the primary sensor, the boost component, the high-speed electronic switch fourth and second sensors, the high-speed electronic switch fifth and third sensors, the electronic speed regulator and the brushless power motor are all controlled by a microcontroller unit (MCU). A high-power energy storage module for energy buffering is also provided between the secondary sensor and the high-speed electronic switch 5, and the storage capacity of the high-power energy storage module is defined as BCT; Among them, the full charge of the high-power energy storage module is 1, and the empty charge is 0; When the power of the high-power energy storage module is high, the power data measured by the tertiary sensor is greater than that of the secondary sensor, otherwise the power data measured by the tertiary sensor is less than that of the secondary sensor, so that the high-power energy storage module is in a half-power state, so that it maintains a stable working state, and the power difference between the tertiary sensor and the secondary sensor is balanced by the high-power energy storage module. The high-speed electronic switch 1, the high-speed electronic switch 2 and the high-speed electronic switch 3 are all controlled by a microcontroller unit (MCU), and the five high-speed electronic switches can all perform PWM modulation, wherein the fully closed state is defined as 1, the fully open state is defined as 0, and the initial state is 0.

2. The electronic continuously variable transmission system for bicycles according to claim 1, characterized in that: A diode is also provided between the secondary sensor and the high-speed electronic switch 5 to prevent reverse flow of electric energy, thereby ensuring unidirectional flow of current.

3. The electronic continuously variable transmission system for bicycles according to claim 1, characterized in that: The boost component includes a high-speed electronic switch 1, a high-speed electronic switch 2 and a high-speed electronic switch 3 connected in parallel; The boost component also includes a primary DCDC boost module and a secondary DCDC boost module connected in series; The high-speed electronic switch 1 and the high-speed electronic switch 2 are electrically connected and controlled with the primary DCDC boost module and the secondary DCDC boost module, and the high-speed electronic switch 3 is connected with the output end of the secondary boost module.

4. The electronic continuously variable transmission system for bicycles according to claim 1, characterized in that: The electronic speed regulator defines the throttle signal as THR; Among them, the full output of the throttle signal is 1, the zero output is 0, and the initial value is 0; Define the electronic speed controller signal receiving cycle constant as T ESC; A constant throttle sensitivity constant K THR is defined. The throttle sensitivity constant K THR is used to adjust the response speed of THR.

5. The electronic continuously variable transmission bicycle transmission system according to any one of claims 1 to 4, characterized in that: The operation steps include: Step 1: measure the power generated by the brushless generator when the rider pedals, and output a DC voltage after synchronous rectification. If the power generation voltage is sufficient for charging the energy buffer module, then go to step 4; if the voltage is lower than that of step 4, then go to step 2; Step 2: If the generated voltage is sufficient for the input of the secondary DCDC boost module, then the step will proceed to step 4 after the boost, otherwise it will proceed to step 3; Step 3: If the generated voltage is sufficient for the input of the first-stage DCDC boost module, the first-stage DCDC boost module and the second-stage DCDC boost module will step up the voltage step by step and then enter step 4; if it is insufficient, jump to step 1; Step 4: measure the generated power and send a throttle signal to the electronic speed regulator to make the output power of the brushless power motor equal to the generated power, so that the overall power generation and power consumption are balanced; Step 5: If the power generation is still greater than the output power of the brushless motor when the throttle signal of the electronic speed regulator has reached the maximum, the power generation is limited by modulating the electronic switch through PWM to balance the overall power generation and power consumption; Step six, return to step one and enter the next cycle.

6. The electronic continuously variable transmission system for bicycles according to claim 5, characterized in that: The operation steps are applicable to two-wheeled bicycles, three-wheeled bicycles or electric two-wheeled vehicles or three-wheeled vehicles driven by electricity.

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