Brake crank control circuit based on analog quantity

Abstract

The utility model relates to a brake handle control circuit based on analog quantity. The circuit comprises a Hall detection circuit, an analog quantity acquisition circuit and a controller, the Hall detection circuit is used for being correspondingly matched with a magnet arranged on a brake handle of the electric two-wheeled vehicle; when the magnet on the brake handle moves along with the brake handle, the Hall detection circuit generates and outputs a voltage signal along with the movement of the magnet; the analog quantity acquisition circuit comprises a voltage division circuit module connected with the output end of the Hall detection circuit, a filter circuit module connected with the voltage division circuit module, and a voltage stabilizing circuit module connected with the filter circuit module; the controller is connected with the output end of the voltage stabilizing circuit module and used for collecting the voltage signals output by the voltage stabilizing circuit module. The electric two-wheeled vehicle can solve the technical problems that the energy recovery efficiency is low and the service life of a battery is affected due to the fact that an electric two-wheeled vehicle in the prior art cannot accurately control the energy recovery process.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric two -wheeled vehicle technical field especially relates to a kind of brake handle control circuit based on analog quantity for electric two -wheeled vehicle. BACKGROUND

[0002] With the rapid development of electric two-wheeled vehicles such as electric bicycles and electric motorcycles, more and more OEMs have increasingly stringent requirements for vehicle performance, including battery life, controller efficiency, and vehicle energy recovery efficiency. In the field of electric two-wheeled vehicles such as electric bicycles and electric motorcycles, in order to improve battery life and extend driving time, it is necessary to recover energy during braking of the electric two-wheeled vehicle. In traditional technology, brake energy recovery is usually controlled by a switching value acquisition circuit. When the electric two-wheeled vehicle brakes, the switching value acquisition circuit is triggered to collect the brake signal, and energy recovery control is immediately performed according to the brake signal. When the brake is canceled, energy recovery is immediately stopped. This method cannot accurately control the energy recovery process, resulting in low energy recovery efficiency and affecting battery life.

[0003] Therefore, in order to better meet the functional requirements of the majority of OEMs and continuously improve the service life and energy recovery efficiency of products, a new circuit design method is needed. SUMMARY

[0004] The utility model provides a kind of brake handle control circuit based on analog quantity, can solve the technical problem that electric two-wheeled vehicle cannot accurately control the energy recovery process in traditional technology, resulting in low energy recovery efficiency and affecting battery life.

[0005] To solve the above technical problems, the utility model provides a kind of brake handle control circuit based on analog quantity, applied to electric two-wheeled vehicle, comprising:

[0006] A Hall detection circuit is used to correspond with the magnet provided on the brake handle of the electric two-wheeled vehicle. When the magnet on the brake handle moves, the Hall detection circuit generates and outputs a voltage signal with the movement of the magnet.

[0007] An analog quantity acquisition circuit includes a voltage divider circuit module connected to the output end of the Hall detection circuit, a filter circuit module connected to the voltage divider circuit module, and a voltage stabilizing circuit module connected to the filter circuit module.

[0008] A controller is connected to the output end of the voltage stabilizing circuit module and is used to collect the voltage signal output by the voltage stabilizing circuit module.

[0009] Optionally, the Hall detection circuit comprises a Hall sensor corresponding to a magnet arranged on the brake handle, a power supply connected to the input end of the Hall sensor, a decoupling capacitor connected between the power supply and the ground, and an output filter capacitor connected between the output end of the Hall sensor and the ground, and the voltage dividing circuit module is connected to the output end of the Hall sensor.

[0010] Optionally, the power supply voltage of the power supply is 5V, and the output voltage of the Hall sensor is 0-5V.

[0011] Optionally, the Hall sensor is a linear Hall sensor.

[0012] Optionally, the decoupling capacitor is a 10nF / 50V capacitor, and the output filter capacitor is a 100nF / 50V capacitor.

[0013] Optionally, the voltage dividing circuit module comprises a first voltage dividing resistor connected to the output end of the Hall detection circuit, and a second voltage dividing resistor connected between the output end of the first voltage dividing resistor and the analog ground, and the output end of the first voltage dividing resistor is connected to the filter circuit module.

[0014] Optionally, the filter circuit module comprises a first filter capacitor connected between the output end of the first voltage dividing resistor and the analog ground, a filter resistor connected to the output end of the first voltage dividing resistor, and a second filter capacitor connected between the output end of the filter resistor and the analog ground, and the output end of the filter resistor is connected to the voltage stabilizing circuit module.

[0015] Optionally, the voltage stabilizing circuit module comprises a voltage stabilizing TVS tube, and a voltage stabilizing power supply connected to the third end of the voltage stabilizing TVS tube, the first end of the voltage stabilizing TVS tube is connected to the analog ground, and the second end of the voltage stabilizing TVS tube is connected to the output end of the filter resistor and connected to the controller.

[0016] Optionally, the voltage stabilizing TVS tube is a double series switch diode, and the voltage of the voltage stabilizing power supply is 3.3V.

[0017] The voltage signal acquisition range of the controller is 0-3.3V.

[0018] Optionally, the first voltage dividing resistor is a 4.22K / 1% resistor, and the second voltage dividing resistor is an 8.2K / 1% resistor.

[0019] The first filter capacitor is a 100nF / 50V capacitor, the second filter capacitor is a 10nF / 50V capacitor, and the filter resistor is a 2.7K / 1% resistor.

[0020] The technical scheme provided by the utility model has the beneficial effects of:

[0021] The Hall detection circuit of the analog quantity-based brake lever control circuit can correspondingly cooperate with the magnet arranged on the brake lever of the electric two-wheeled vehicle, and when the brake lever is used to brake the electric two-wheeled vehicle, the magnet arranged on the brake lever will move correspondingly with the movement (such as pressing or rotating) of the brake lever, and the Hall detection circuit can generate and output a continuously changing voltage signal with the movement of the magnet; the continuously changing voltage signal collected by the Hall detection circuit is subjected to voltage division, filtering and voltage stabilization by the voltage division circuit module, the filtering circuit module and the voltage stabilization circuit module of the analog quantity collection circuit, so that a continuously changing analog quantity signal suitable for collection by the controller is obtained; and the controller can perform linear control on the energy recovery process of the electric two-wheeled vehicle through the continuously changing analog quantity signal collected, so that the energy recovery process can be accurately controlled, thereby improving the energy recovery efficiency and prolonging the service life of the battery. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 The structure schematic diagram of the analog quantity-based brake lever control circuit is shown in the embodiment of the present application;

[0024] Figure 2 The circuit structure schematic diagram of the Hall detection circuit of the analog quantity-based brake lever control circuit is shown in the embodiment of the present application;

[0025] Figure 3 The circuit structure schematic diagram of the analog quantity collection circuit of the analog quantity-based brake lever control circuit is shown in the embodiment of the present application.

[0026] In the figure: 10, analog quantity-based brake lever control circuit; 100, Hall detection circuit; Q1, Hall sensor; VCC, power supply; C1, output filter capacitor; C2, decoupling capacitor; 200, analog quantity collection circuit; 210, voltage division circuit module; R928, first voltage division resistor; R930, second voltage division resistor; 220, filtering circuit module; C913, first filter capacitor; R929, filter resistor; C914, second filter capacitor; 230, voltage stabilization circuit module; 300, controller; D921, voltage stabilization TVS tube; VCCA, voltage stabilization power supply. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0028] As Figure 1 The utility model provides a kind of brake handle control circuit 10 based on analog quantity, it is applied to electric two-wheeled vehicle.The brake handle control circuit 10 based on analog quantity includes Hall detection circuit 100, analog quantity acquisition circuit 200 connected with Hall detection circuit 100 and controller 300 connected with analog quantity acquisition circuit 200.Through Hall detection circuit 100, the brake handle opening of electric two-wheeled vehicle can be detected, and analog quantity acquisition circuit 200 can process the detection signal of brake handle opening collected by Hall detection circuit 100 to obtain linear analog quantity signal, and through controller 300, the energy recovery process of electric two-wheeled vehicle can be linearly controlled according to the obtained linear analog quantity signal.

[0029] Specifically, Hall detection circuit 100 is used to correspond with the magnet set on the brake handle of electric two-wheeled vehicle;When the magnet on the brake handle moves with brake handle, Hall detection circuit 100 generates and outputs voltage signal with the movement of magnet.Moreover, analog quantity acquisition circuit 200 can include voltage dividing circuit module 210 connected with the output end of Hall detection circuit 100, filter circuit module 220 connected with voltage dividing circuit module 210 and voltage stabilizing circuit module 230 connected with filter circuit module 220.Moreover, controller 300 is connected with the output end of voltage stabilizing circuit module 230, for collecting the voltage signal output by voltage stabilizing circuit module 230, and linearly controlling the energy recovery system of electric two-wheeled vehicle according to the collected voltage signal.

[0030] The Hall effect detection circuit 100 of the analog brake lever control circuit 10 can cooperate with the magnet on the brake lever of the electric two-wheeler. When the electric two-wheeler is braked by the brake lever, the magnet on the brake lever will move accordingly as the brake lever moves (such as by pressing or rotating the brake lever). The Hall effect detection circuit 100 can generate and output a continuously changing voltage signal as the magnet moves. The voltage divider circuit module 210, filter circuit module 220, and voltage regulator circuit module 230 of the analog signal acquisition circuit 200 perform voltage division, filtering, and voltage regulation on the continuously changing voltage signal acquired by the Hall effect detection circuit 100 to obtain a continuously changing analog signal suitable for the controller 300 to acquire. The controller 300 can perform corresponding linear control on the energy recovery process of the electric two-wheeler by acquiring the continuously changing analog signal, which can enable precise control of the energy recovery process, thereby improving energy recovery efficiency and extending battery life.

[0031] Furthermore, such as Figure 2 As shown, the Hall detection circuit 100 may include a Hall sensor Q1 for corresponding engagement with a magnet mounted on the brake lever, a power supply VCC connected to the input terminal of the Hall sensor Q1, a decoupling capacitor C2 connected between the power supply VCC and ground, and an output filter capacitor C1 connected between the output terminal of the Hall sensor Q1 and ground. A voltage divider circuit module 210 is connected to the output terminal of the Hall sensor Q1. Power is supplied to the Hall sensor Q1 via the power supply VCC, causing the Hall sensor Q1 to generate a voltage signal when it aligns with the magnet on the brake lever. The decoupling capacitor C2 ensures a stable power supply from the power supply VCC to the Hall sensor Q1, filtering out high-frequency noise and reducing voltage fluctuations. The output filter capacitor C1 filters out noise from the voltage signal output by the Hall sensor Q1, ensuring a stable voltage signal output to the analog signal acquisition circuit 200.

[0032] Furthermore, when braking with the brake lever of the electric two-wheeler, the brake lever is pressed or rotated to change the brake lever opening. At this time, the position of the magnet on the brake lever changes, causing the corresponding position of the magnet and the Hall sensor Q1 to change. The magnetic field generated by the magnet also gradually changes the effect on the Hall sensor Q1, causing the voltage signal generated by the Hall sensor Q1 to gradually change. Moreover, this change changes gradually with the change of the brake lever opening (not suddenly), so the voltage signal output by the output terminal of the Hall sensor Q1 also changes gradually.

[0033] Specifically, the Hall sensor Q1 is a linear Hall sensor Q1. The voltage signal output by the linear Hall sensor Q1 is a linear voltage signal, so that the voltage signal collected by the controller 300 is linear, so that the controller 300 can control the energy recovery system to change linearly, and the control is more accurate. Moreover, the supply voltage of the power supply VCC is 5V, and the output voltage of the Hall sensor Q1 is 0-5V, so that the output voltage signal of the Hall sensor Q1 is a linear voltage signal of 0-5V.

[0034] Moreover, the decoupling capacitor C2 is a capacitor of 10nF / 50V, that is, the capacitance of the decoupling capacitor C2 is 10nF, and the rated voltage is 50V; the output filter capacitor C1 is a capacitor of 100nF / 50V, that is, the capacitance of the output filter capacitor C1 is 100nF, and the rated voltage is 50V. The Hall sensor Q1 is a linear Hall sensor Q1 of model MT9102A.

[0035] In addition, as shown in Figure 3 The voltage dividing circuit module 210 of the analog quantity collection circuit 200 can include a first voltage dividing resistor R928 connected to the output end of the Hall detection circuit 100, and a second voltage dividing resistor R930 connected between the output end of the first voltage dividing resistor R928 and the analog ground, and the output end of the first voltage dividing resistor R928 is connected to the filter circuit module 220. The voltage dividing circuit module 210 composed of the first voltage dividing resistor R928 and the second voltage dividing resistor R930 can divide the voltage signal output by the linear Hall sensor Q1 and output a preset voltage signal.

[0036] In this embodiment, the collection range of the voltage signal of the controller 300 is 0-3.3V. That is, the range of the voltage signal that the controller 300 can collect is between 0-3.3V, and the voltage signal output by the linear Hall sensor Q1 may not be consistent with the range of the voltage signal (such as the output voltage of the linear Hall sensor Q1 being a linear voltage of 0-5V), at which time the voltage signal output by the linear Hall sensor Q1 needs to be divided. Moreover, the first voltage dividing resistor R928 can be a resistor of 4.22K / 1%, that is, the resistance of the first voltage dividing resistor R928 is 4.22K, and the accuracy is 1%; the second voltage dividing resistor R930 is a resistor of 8.2K / 1%, that is, the resistance of the second voltage dividing resistor R930 is 8.2K, and the accuracy is 1%.

[0037] In addition, the filter circuit module 220 can include a first filter capacitor C913 connected between the outgoing end of the first voltage dividing resistor R928 and the analog ground, a filter resistor R929 connected to the outgoing end of the first voltage dividing resistor R928, and a second filter capacitor C914 connected between the outgoing end of the filter resistor R929 and the analog ground, and the outgoing end of the filter resistor R929 is connected to the voltage stabilizing circuit module 230. The filter circuit module 220 composed of the first filter capacitor C913, the filter resistor R929, and the second filter capacitor C914 can perform low-pass filtering on the voltage signal after voltage division to filter out noise in the circuit and ensure the stability of the voltage signal in the circuit.

[0038] Furthermore, the first filter capacitor C913 is a 100nF / 50V capacitor, i.e., the capacitance of the first filter capacitor C913 is 100nF and the rated voltage is 50V; the second filter capacitor C914 is a 10nF / 50V capacitor, i.e., the capacitance of the second filter capacitor C914 is 10nF and the rated voltage is 50V; and the filter resistor R929 is a 2.7K / 1% resistor, i.e., the resistance of the filter resistor R929 is 2.7K and the accuracy is 1%.

[0039] In addition, the voltage stabilizing circuit module 230 can include a voltage stabilizing TVS tube and a voltage stabilizing power supply VCCA connected to the third end (3) of the voltage stabilizing TVS tube, the first end (1) of the voltage stabilizing TVS tube is connected to the analog ground, and the second end (2) of the voltage stabilizing TVS tube is connected to the outgoing end of the filter resistor R929 and the controller 300. The voltage stabilizing circuit module 230 composed of the voltage stabilizing TVS tube and the voltage stabilizing power supply VCCA performs voltage stabilizing protection on the voltage signal filtered by the filter circuit module 220 to keep the output voltage signal stable within a preset range.

[0040] Furthermore, the voltage stabilizing TVS tube D921 can be a double series switch diode, and its specific model can be MMBD7000LT1G; the voltage of the voltage stabilizing power supply VCCA is 3.3V. Furthermore, the controller 300 can use the single-chip microcomputer model GD32E513RET6, VCCMARM-M432 bits, LOFP-64 (10X10) of Meguix.

[0041] In addition, the above-mentioned brake handle control circuit 10 based on analog quantity can be applied to electric bicycles, electric motorcycles, electric scooters, electric skateboards, and other electric two-wheel vehicles that can realize energy recovery (i.e., have an energy recovery system).

[0042] The utility model discloses a brake control circuit 10 based on analog quantity, through setting magnet on the brake of electric two -wheeled vehicle, when the user is in the riding process and pinches the brake, magnet will be close to hall sensor Q1, when the brake opening is slowly bigger, magnet will slowly move above hall sensor Q1, and the track of movement is directly proportional to the brake opening. Hall sensor Q1 will linearly output voltage signal, and the range of voltage signal is between 0~5V. Moreover, the voltage signal of output carries out level conversion and RC low pass filtering through analog quantity acquisition circuit 200, and sends into the controller 300 and carries out voltage signal's collection processing.

[0043] The utility model discloses a brake control circuit 10 based on analog quantity utilizes the principle that linear hall works, through the change of electric two -wheeled vehicle's brake opening, voltage signal is collected in time, and then through the change of voltage signal, can accurately control brake signal, according to accurate brake signal, can more accurately control the whole vehicle energy recovery, improves whole vehicle system efficiency, increases the life of battery, prolongs the cruising range.

[0044] It should be noted that in the utility model, such as "first" and "second" and the like relationship terms are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the term "comprises", "includes" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of another identical element in the process, method, article or equipment including the element.

[0045] The above is only the specific implementation of the utility model, so that the person skilled in the art can understand or realize the utility model. Various modifications of these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown in the text, but will conform to the widest scope consistent with the principles and novel features of the utility model.

Claims

1. An analog quantity-based brake lever control circuit applied to an electric two-wheeled vehicle, characterized by, The application relates to a voltage signal acquisition device for a brake handle of an electric two-wheeled vehicle. The application relates to a voltage signal acquisition device for a brake handle of an electric two-wheeled vehicle. The application relates to a voltage signal acquisition device for a brake handle of an electric two-wheeled vehicle. The application relates to a voltage signal acquisition device for a brake handle of an electric two-wheeled vehicle. The application relates to a voltage signal acquisition device for a brake handle of an electric two-wheeled vehicle.

2. The analog-based brake lever control circuit of claim 1, wherein, The application relates to a voltage signal acquisition device for a brake handle of an electric two-wheeled vehicle.

3. The analog-based brake lever control circuit of claim 2, wherein, The application relates to a voltage signal acquisition device for a brake handle of an electric two-wheeled vehicle.

4. The analog-based brake lever control circuit of claim 2, wherein, The application relates to a voltage signal acquisition device for a brake handle of an electric two-wheeled vehicle.

5. The analog-based brake lever control circuit of claim 2, wherein, The application relates to a voltage signal acquisition device for a brake handle of an electric two-wheeled vehicle.

6. The analog-based brake lever control circuit of any of claims 1-5, wherein, The application relates to a voltage signal acquisition device for a brake handle of an electric two-wheeled vehicle.

7. The analog-based brake lever control circuit of claim 6, wherein, The application relates to a voltage signal acquisition device for a brake handle of an electric two-wheeled vehicle.

8. The analog-based brake lever control circuit of claim 7, wherein, The application relates to a voltage signal acquisition device for a brake handle of an electric two-wheeled vehicle.

9. The analog-based brake lever control circuit of claim 8, wherein, The application relates to a voltage signal acquisition device for a brake handle of an electric two-wheeled vehicle. The application relates to a voltage signal acquisition device for a brake handle of an electric two-wheeled vehicle.

10. The analog-based brake lever control circuit of claim 8, wherein, The application relates to a voltage signal acquisition device for a brake handle of an electric two-wheeled vehicle. The application relates to a voltage signal acquisition device for a brake handle of an electric two-wheeled vehicle. The application relates to a voltage signal acquisition device for a brake handle of an electric two-wheeled vehicle. The application relates to a voltage signal acquisition device for a brake handle of an electric two-wheeled vehicle. The application relates to a voltage signal acquisition device for a brake handle of an electric two-wheeled vehicle. The application relates to a voltage signal acquisition device for a brake handle of an electric two-wheeled vehicle. The application relates to a voltage signal acquisition device for a brake handle of an electric two-wheeled vehicle. 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