Power-assisted sensing system of electric bicycle and electric bicycle

Abstract

The utility model discloses an electric bicycle power-assisted sensing system and an electric bicycle, and the electric bicycle power-assisted sensing system comprises a magnetic disk which is arranged on a center shaft of the electric bicycle and is also provided with a plurality of magnet particles; the double Hall sensors are arranged on the electric bicycle and correspond to the magnet particles; the pulse voltage conversion module is arranged on the electric bicycle, and the input end of the pulse voltage conversion module is electrically connected with the double-Hall sensor; the controller of the electric bicycle is electrically connected with the output end of the pulse voltage conversion module; and the driving motor of the electric bicycle is electrically connected with the controller. According to the utility model, the pulse voltage conversion module is matched with the double Hall sensors, so that the speed of a rider can be controlled more easily during pedal boosting, the speed can be controlled according to the pedal frequency, and the driving safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric bicycles, in particular to an electric bicycle power-assistance sensing system and an electric bicycle. Background Art

[0002] Electric bicycles are easy to use, low in price, and convenient for people to travel. They are very popular. The social ownership of electric vehicles is huge. The power-assisted riding of electric bicycles can increase the mileage and satisfy the joy of riding a bicycle. Many electric bicycles are equipped with power-assisted functions. At present, most of the power-assisted sensors of electric bicycles use magnetic sensors. The principle of the magnetic sensor is to detect the frequency of pedaling and disk rotation through the Hall sensor and send Hall signals to the controller of the electric bicycle so that the controller can control the rotation of the motor.

[0003] However, current electric bicycles usually have several gears on the handlebars, and one of the gears is selected when riding, such as low speed, medium speed or high speed. After the existing magnetic sensor is installed on the electric bicycle, the Hall sensor detects the rotation of the disk and sends a signal to the controller. After receiving the signal, the controller controls the motor to rotate according to the gear set on the handlebar. The motor assists at a fixed speed and cannot automatically adjust the speed of the motor according to the pedaling frequency of the rider. That is, the speed of the vehicle after the motor assists cannot be controlled by pedaling, so the vehicle speed is easily unstable and safety accidents are prone to occur.

[0004] Therefore the prior art still needs to be improved and enhanced. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present utility model is to provide an electric bicycle power-assisting sensor system and an electric bicycle, aiming to solve the problem in the prior art that the pulse signal controlled power-assisting sensor cannot automatically adjust the motor speed according to the pedaling frequency of the rider, resulting in unstable vehicle speed control and prone to safety accidents.

[0006] The technical solution adopted by the utility model to solve the technical problem is as follows:

[0007] In a first aspect, an embodiment of the utility model provides an electric bicycle power assist sensing system, which comprises:

[0008] A magnetic disk, which is arranged on the central axis of the electric bicycle and has a plurality of magnet particles arranged on the magnetic disk;

[0009] A dual Hall sensor, wherein the dual Hall sensor is arranged on the electric bicycle and corresponds to the magnetic particles;

[0010] A pulse voltage conversion module, wherein the pulse voltage conversion module is arranged on the electric bicycle, and an input end of the pulse voltage conversion module is electrically connected to the dual Hall sensor;

[0011] A controller of the electric bicycle, the controller being electrically connected to an output end of the pulse voltage conversion module;

[0012] A driving motor of an electric bicycle, wherein the driving motor is electrically connected to the controller.

[0013] As a further improved technical solution, the pulse voltage conversion module is provided with a switch, and the switch is used to turn on or off the pulse voltage conversion module.

[0014] As a further improved technical solution, a plurality of the magnet particles form a circle along the circumference of the magnetic disk and are evenly distributed on the magnetic disk.

[0015] As a further improved technical solution, the above-mentioned electric bicycle power-assisting sensor system further includes:

[0016] A handlebar of an electric bicycle, wherein the handlebar is electrically connected to the controller.

[0017] As a further improved technical solution, the above-mentioned electric bicycle power-assisting sensor system further includes:

[0018] A first Schott diode and a second Schott diode; two ends of the first Schott diode are electrically connected to the output end of the pulse voltage conversion module and the controller respectively, and two ends of the second Schott diode are electrically connected to the handle and the controller respectively.

[0019] As a further improved technical solution, the magnetic disk is detachably connected to the central axis.

[0020] In a second aspect, an embodiment of the utility model further provides an electric bicycle, which includes any one of the electric bicycle power assist sensing systems described above.

[0021] Compared with the prior art, the embodiment of the utility model has the following advantages:

[0022] In the utility model, the rider pedals and drives the disk to rotate through the central axis. The dual Hall sensors scan the magnetic particles on the disk and generate an electrical signal corresponding to the pedal frequency. The dual Hall sensors are used to generate a pedal frequency signal for forward pedaling and no pedal frequency signal for reverse pedaling, that is, forward pedaling generates power assistance and reverse pedaling has no power assistance. Then, the electrical signal transmitted by the dual Hall sensors is converted into a voltage analog signal through a pulse voltage conversion module, and the voltage analog signal is proportional to the pedal frequency signal detected by the dual Hall sensors. After the voltage analog signal is transmitted to the controller, the controller controls the speed of the drive motor to be proportional to the pedal frequency when it is working. The utility model converts the pedaling frequency electrical signal detected by the dual Hall sensors into a voltage analog signal to form a pedal signal through a pulse voltage conversion module. The pedal signal controls the controller to drive the drive motor to work. Since the pedal signal is a voltage analog signal and is proportional to the pedaling frequency electrical signal detected by the dual Hall sensors, the higher the pedaling frequency of the electric bicycle, the higher the pedal signal voltage, and the faster the controller controls the drive motor speed. Correspondingly, the lower the pedaling frequency, the lower the pedal signal voltage, and the slower the controller controls the drive motor speed. Therefore, the utility model can make it easier for the rider to control the vehicle speed when the pedal is assisting through the pulse voltage conversion module in conjunction with the dual Hall sensors, and can control the vehicle speed according to the pedaling frequency, thereby improving driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a three-dimensional structural schematic diagram of an electric bicycle power-assisting sensor system provided by the utility model.

[0024] In the figure: 1. magnetic disk; 2. magnet particles; 3. dual Hall sensors; 4. pulse voltage conversion module; 5. controller; 6. drive motor; 7. switch; 8. handle; 9. first Schott diode; 10. second Schott diode; 11. center axis. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] Embodiment 1:

[0027] like Figure 1As shown, an embodiment of the utility model provides an electric bicycle power-assisting sensor system, which includes: a magnetic disk 1, which is arranged on the central axis 11 of the electric bicycle, and a plurality of magnet particles 2 are also arranged on the magnetic disk 1; a dual Hall sensor 3, which is arranged on the electric bicycle and corresponds to the magnet particles 2; a pulse voltage conversion module 4, which is arranged on the electric bicycle, and the input end of the pulse voltage conversion module 4 is electrically connected to the dual Hall sensor 3; a controller 5 of the electric bicycle, which is electrically connected to the output end of the pulse voltage conversion module 4; and a drive motor 6 of the electric bicycle, which is electrically connected to the controller 5.

[0028] In this embodiment, the electric bicycle power-assisting sensing system includes a magnetic disk 1, magnetic particles 2, a dual Hall sensor 3, a pulse voltage conversion module 4, an electric bicycle controller 5 and an electric bicycle drive motor 6; wherein, the magnetic disk 1 is circular, and the magnetic particles 2 are provided in plurality and are evenly distributed on the magnetic disk 1; the magnetic disk 1 is used to be fixed on the central axis 11 of the electric bicycle; when the rider steps on the pedal, the pedal will drive the central axis 11 to rotate, thereby driving the magnetic disk 1 and the magnetic particles 2 to rotate; the dual Hall sensor 3 is installed on the frame of the electric bicycle, and the dual Hall sensor 3 is arranged opposite to the magnetic particles 2 on the magnetic disk 1, and is used to scan the rotating magnetic particles 2 and generate an electrical signal corresponding to the pedaling frequency; if the frequency of the rider's pedaling is higher, the electrical signal generated by the dual Hall sensor 3 is stronger; conversely, if The lower the frequency of the rider's pedaling, the weaker the electrical signal generated by the dual Hall sensor 3. The pulse voltage conversion module 4 is arranged on the frame of the electric bicycle, and the input end of the pulse voltage conversion module 4 is electrically connected to the dual Hall sensor 3. It is used to receive the electrical signal sent by the dual Hall sensor 3 and convert the electrical signal into a voltage analog signal. The strength of the voltage analog signal is proportional to the electrical signal, that is, the stronger the electrical signal, the stronger the voltage analog signal. The controller 5 and the drive motor 6 are both components originally provided by the electric bicycle. The output end of the pulse voltage conversion module 4 is connected to the controller 5, and the controller 5 is connected to the drive motor 6. When the controller 5 receives the voltage analog signal, it will control the speed of the drive motor 6 according to the strength of the voltage analog signal, thereby achieving the effect of controlling the driving speed of the electric bicycle. In the utility model, the rider pedals and drives the disk 1 to rotate through the middle shaft 11, and the dual Hall sensors 3 scan the magnetic particles 2 on the disk 1 and generate an electrical signal corresponding to the pedal frequency. The dual Hall sensors 3 are used to generate a pedal frequency signal for forward pedaling and no pedal frequency signal for reverse pedaling, that is, forward pedaling generates power assistance and reverse pedaling has no power assistance. Then, the electrical signal transmitted by the dual Hall sensors 3 is converted into a voltage analog signal through the pulse voltage conversion module 4, and the voltage analog signal is proportional to the pedal frequency signal detected by the dual Hall sensors 3. After the voltage analog signal is transmitted to the controller 5, the controller 5 controls the speed of the drive motor 6 to be proportional to the pedal frequency when it is working.The utility model converts the pedaling frequency electrical signal detected by the dual Hall sensors 3 into a voltage analog signal to form a pedal signal through a pulse voltage conversion module 4. The pedal signal controls the controller 5 to drive the drive motor 6 to work. Since the pedal signal is a voltage analog signal and is proportional to the pedaling frequency electrical signal detected by the dual Hall sensors 3, the higher the pedaling frequency of the electric bicycle, the higher the pedal signal voltage, and the faster the controller 5 controls the speed of the drive motor 6. Correspondingly, the lower the pedaling frequency, the lower the pedal signal voltage, and the slower the controller 5 controls the speed of the drive motor 6. Therefore, the utility model can make it easier for the rider to control the vehicle speed when pedaling with assistance through the pulse voltage conversion module 4 in combination with the dual Hall sensors 3, and can control the vehicle speed according to the pedaling frequency, thereby improving driving safety.

[0029] As a further solution, the pulse voltage conversion module 4 is provided with a switch 7, and the switch 7 is used to turn on or off the pulse voltage conversion module 4. Specifically, the switch 7 is provided on the pulse voltage conversion module 4 in the form of a button, and is used to control the power on and off of the pulse voltage conversion module 4. When the rider does not need pedal assistance, the power assistance sensing system can be turned off by the switch 7. When pedal assistance is needed, the power assistance sensing system can be turned on by pressing the switch 7 again.

[0030] As a further solution, a plurality of the magnet particles 2 are evenly spaced and arranged in a circle along the circumference of the disk 1. Specifically, the magnet particles 2 are evenly spaced and arranged in a circle along the circumference of the disk 1, so that the dual Hall sensor 3 can detect the pedaling frequency more stably and generate a stable electrical signal.

[0031] In this embodiment, the power-assist sensing system for the electric bicycle further comprises a handlebar 8 of the electric bicycle, and the handlebar 8 is electrically connected to the controller 5. The handlebar 8 originally provided by the electric bicycle in this embodiment can be used together with the power-assist sensing system, and the rider can also control the speed of the electric bicycle by twisting the handlebar 8.

[0032] As a further solution, the power-assisting sensing system of the electric bicycle further includes a first Schott diode 9 and a second Schott diode 10; the two ends of the first Schott diode 9 are electrically connected to the output end of the pulse voltage conversion module 4 and the controller 5, respectively, and the two ends of the second Schott diode 10 are electrically connected to the throttle 8 and the controller 5, respectively. Specifically, in this embodiment, the signal emitted by the throttle 8 and the signal emitted by the pulse voltage conversion module 4 can be isolated from each other by the first Schott diode 9 and the second Schott diode 10, so that the throttle 8 and the pedal power assistance are independent of each other; however, when the throttle 8 and the pedal power assistance are operated at the same time, whichever of the throttle 8 and the pulse voltage conversion module 4 generates a stronger voltage analog signal, the controller 5 is controlled by the one that generates the stronger voltage analog signal.

[0033] As a further solution, the disk 1 is detachably connected to the central axis 11. The disk 1 and the central axis 11 can be fixed to each other by means of a snap connection, for example, a snap (not shown) and a buckle position (not shown) are respectively provided on the inner side of the disk 1 and the outer side of the central axis 11, and then the disk 1 is sleeved on the central axis 11 through the cooperation of the snap and the buckle position, and the two are snap-connected and fixed to each other, so that the disk 1 can be removed from the central axis 11 for later maintenance or replacement.

[0034] Embodiment 2:

[0035] This embodiment further provides an electric bicycle, which includes the electric bicycle power assist sensing system described in any one of the first embodiments.

[0036] In summary, the utility model discloses an electric bicycle power-assistance sensing system, which includes: a magnetic disk 1, which is arranged on the central axis 11 of the electric bicycle, and a plurality of magnet particles 2 are also arranged on the magnetic disk 1; a dual Hall sensor 3, which is arranged on the electric bicycle and corresponds to the magnet particles 2; a pulse voltage conversion module 4, which is arranged on the electric bicycle, and the input end of the pulse voltage conversion module 4 is electrically connected to the dual Hall sensor 3; a controller 5 of the electric bicycle, which is electrically connected to the output end of the pulse voltage conversion module 4; and a drive motor 6 of the electric bicycle, which is electrically connected to the controller 5. The utility model can make it easier for the rider to control the speed of the vehicle when the rider is pedaling to assist the vehicle by using the pulse voltage conversion module 4 in combination with the dual Hall sensor 3, and can control the speed of the vehicle according to the pedaling frequency, thereby improving driving safety.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0042] Of course, the description of the above embodiments of the utility model is relatively detailed, but it cannot be understood as limiting the scope of protection of the utility model. The utility model can also have many other implementation methods. Based on this implementation method, other implementation methods obtained by ordinary technicians in this field without any creative work all belong to the scope of protection of the utility model. The scope of protection of the utility model shall be based on the attached claims.

Claims

1. An electric bicycle power assist sensing system, characterized in that: include: A magnetic disk, which is arranged on the central axis of the electric bicycle and has a plurality of magnet particles arranged on the magnetic disk; A dual Hall sensor, wherein the dual Hall sensor is arranged on the electric bicycle and corresponds to the magnetic particles; A pulse voltage conversion module, wherein the pulse voltage conversion module is arranged on the electric bicycle, and an input end of the pulse voltage conversion module is electrically connected to the dual Hall sensor; A controller of the electric bicycle, the controller being electrically connected to an output end of the pulse voltage conversion module; A driving motor of an electric bicycle, wherein the driving motor is electrically connected to the controller.

2. The electric bicycle power assist sensor system according to claim 1, characterized in that: The pulse voltage conversion module is provided with a switch, and the switch is used to turn on or off the pulse voltage conversion module.

3. The electric bicycle power assist sensor system according to claim 1, characterized in that: The plurality of magnet particles are arranged in a circle along the circumference of the magnetic disk and are evenly distributed on the magnetic disk.

4. The electric bicycle power assist sensor system according to claim 1, characterized in that: Also includes: A handlebar of an electric bicycle, wherein the handlebar is electrically connected to the controller.

5. The electric bicycle power assist sensor system according to claim 4, characterized in that: Also includes: A first Schott diode and a second Schott diode; two ends of the first Schott diode are electrically connected to the output end of the pulse voltage conversion module and the controller respectively, and two ends of the second Schott diode are electrically connected to the handle and the controller respectively.

6. The electric bicycle power assist sensor system according to claim 1, characterized in that: The magnetic disk is detachably connected to the central axis.

7. An electric bicycle, characterized in that: An electric bicycle power assist sensing system comprising any one of claims 1-6.

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