Electric bicycle wireless charging device and position adjusting method thereof

Abstract

The invention provides an electric bicycle wireless charging device and a position adjusting method thereof, which are used for solving the problems of complex operation steps and low centering difficulty and precision when a transmitting end of an existing electric bicycle wireless charging device is aligned with receiving ends at various mounting positions. The device comprises a transmitting end, a receiving end and an XZ sliding table module, wherein the transmitting end is mounted on a sliding end of the XZ sliding table module; the receiving end is installed on a frame on one side of a wheel of the electric bicycle, a limiting block is arranged on one side of the XZ sliding table module, an arc-shaped limiting groove is formed in the limiting block, and during charging, the wheel at the end, provided with the receiving end, of the electric bicycle is clamped in the arc-shaped limiting groove. According to the invention, the transmitting end and the receiving end directly face each other in the Y direction by arranging the arc-shaped limiting groove, the positions of the transmitting end in the X direction and the Y direction are adjusted through the XZ sliding table module, the transmitting end and the receiving end directly face each other in the X direction and the Y direction, the operation steps are simple, and the alignment precision of the transmitting end and the receiving end is improved.

Description

Technical Field

[0001] The invention relates to the field of wireless power transmission, and in particular to a wireless charging device for an electric bicycle and a position adjustment method thereof. Background Art

[0002] Existing charging methods for electric bicycles can be divided into two types: wired and wireless. Traditional electric bicycles mostly use wired charging methods. Electric bicycles are charged outdoors or in semi-open sheds. Traditional wired charging methods are easily affected by outdoor rain, and messy charging cables are also very likely to cause safety hazards such as fire.

[0003] In recent years, with the development of wireless charging technology, wireless charging devices for electric bicycles have been widely used. Wireless charging devices for electric bicycles transmit electric energy through coupling between the transmitter and the receiver. This transmission method does not require plugging in a charging cable and is highly safe. However, when charging, the transmitter and the receiver need to face each other to maximize the transmission power. However, due to the different widths and heights of the frames of electric bicycles produced by each manufacturer, there are certain differences in the positions of the receivers on the frames. When charging, it is difficult for the transmitter and the receiver to align in three directions. In response to the above problems, wireless charging devices with position adjustment functions are applied to the field of wireless charging of electric bicycles. However, the existing wireless devices for electric bicycles mostly use power detection or image recognition methods to adjust their positions. When using power detection, multiple positions need to be tried to obtain the maximum transmission power position, so as to identify the position as the facing position; and the position adjustment using image recognition technology requires the collection and processing of image information of the transmitter and the receiver. The large amount of calculation has high requirements on the software and hardware of the control system. That is, the existing wireless charging device for electric bicycles has complex operation steps when aligning the transmitter and the receiver at various installation positions, and the difficulty and accuracy of the alignment are low. Summary of the invention

[0004] The purpose of the present invention is to provide an electric bicycle wireless charging device and a position adjustment method thereof, which are used to solve the technical problems that the operation steps of the existing electric bicycle wireless charging device are complicated when aligning the transmitter end with the receiver end of various installation positions, and the alignment difficulty is low.

[0005] A wireless charging device for an electric bicycle, comprising a transmitting end and a receiving end, characterized in that it also comprises an XZ slide module, wherein the transmitting end is mounted on the sliding end of the XZ slide module;

[0006] The receiving end is installed on the frame on one side of the electric bicycle wheel. A limiting block is set on one side of the XZ slide module. An arc-shaped limiting groove is opened on the limiting block. When charging, the wheel of the electric bicycle with one end of the receiving end installed is clamped in the arc-shaped limiting groove.

[0007] Optionally, the XZ slide module includes a channel steel bracket arranged in a vertical direction, the channel steel bracket, the end surface of which is provided with a first slide rail, a first guide rail slider is slidably provided on the first slide rail, and the transmitting end is installed on the first guide rail slider;

[0008] A first screw is installed in the groove of the channel steel bracket, and the axial direction of the first screw is the same as the length direction of the first slide rail. A first threaded slider is threadedly connected to the first screw. A first avoidance groove is opened on the end surface of the channel steel bracket, and the upper end of the first threaded slider passes through the first avoidance groove and is connected to the first guide rail slider. A first motor is also installed in the groove of the channel steel bracket, and a power output shaft of the first motor is connected to one end of the first screw.

[0009] Optionally, the bottom end of the channel steel bracket is mounted on a support block, and a second guide rail slider and a second threaded slider are mounted on the bottom end of the support block;

[0010] The second guide rail slider is slidably connected to the second slide rail, the second threaded slider is threadedly connected to the second screw rod, the second screw rod is arranged in parallel with the second guide rail slider, and one end of the second screw rod is connected to the second motor;

[0011] The second screw rod and the second guide rail slider are both installed in a slide box, the slide box is used to avoid the second avoidance groove of the channel steel bracket, a motor box is arranged on one side of the slide box, and the second motor is installed in the motor box.

[0012] Optionally, the limiting blocks on both sides of the arc-shaped limiting groove are further provided with limiting plates;

[0013] The limiting blocks at both ends of the arc-shaped limiting groove are provided with guiding bevels for facilitating the pushing of the electric bicycle.

[0014] Optionally, the transmitting end includes a first card holder and a first shell installed in the first card holder;

[0015] A wireless charging transmitter module is installed in the first shell, the input end of the wireless charging transmitter module is connected to a DC power supply, a plurality of first balls are installed on the end surface of the first shell, and a pressure detection module is installed on the upper side wall of the first card holder.

[0016] Optionally, the pressure detection module comprises a sleeve with an opening at one end, and a push rod with one end slidably disposed in the sleeve;

[0017] A pressure sensor is installed at the bottom end of the inner side of the sleeve, and a pressure spring is also arranged in the sleeve between the pressure sensor and the push rod. The two ends of the pressure spring are respectively connected to the end face of the push rod and the end face of the pressure sensor. The sleeve and the axis are perpendicular to the end face of the first shell. When the pressure spring is in a free state, the front end of the push rod extends out of the vertical plane where the end face of the first shell is located.

[0018] Optionally, there are two groups of pressure detection modules, which are respectively arranged at two ends of the upper side wall of the first card rack, and a second ball is installed at the front end of the push rod.

[0019] Optionally, the receiving end includes a second card holder, and a second housing installed in the second card holder;

[0020] A wireless charging receiving module is installed in the second shell, and the output end of the wireless charging receiving module is connected to the battery load of the electric bicycle. During charging, the wireless charging receiving module is coupled with the wireless charging transmitting end module to transmit electric energy.

[0021] Optionally, two ears corresponding to two groups of pressure detection modules are provided on the upper side wall of the second card rack;

[0022] The center line of the second shell in the vertical direction and the center axis of the electric bicycle wheel are located in the same vertical plane, and the center line of the first shell in the vertical direction and the center line of the arc-shaped limiting groove in the width direction are located in the same vertical plane.

[0023] A method for adjusting the position of an electric bicycle wireless charging device is used to adjust the position of a transmitting end of the above-mentioned electric bicycle wireless charging device, and the specific steps are:

[0024] S1: Push the wheel of the electric bicycle with one end of the transmitter installed into the arc-shaped limiting groove;

[0025] S2: Start the second motor to drive the channel steel bracket and the transmitting end to move toward the end close to the limit block. When the pressure of the pressure sensor is equal to the pressure threshold, the first ball fits the end surface of the second shell, and the second motor stops.

[0026] S3: starting the first motor to drive the transmitting end to move upward, when the pressure of the pressure sensor is equal to zero, the second ball is separated from the end surface of the second shell and the support ear, and the first motor stops;

[0027] S4: Start the transmitter to supply power, the transmitter is coupled with the receiver, and the load battery of the electric bicycle is charged.

[0028] Due to the adoption of the above technical solution, the present invention has the following advantages:

[0029] 1. In the present application, when the wheel of the electric bicycle enters the arc-shaped limit groove and stops steadily, the center line of the vertical direction of the receiving end, the center line of the vertical direction of the transmitting end and the center line of the width direction of the arc-shaped limit groove must be located in the same vertical plane, and the Y-direction alignment of the transmitting end and the receiving end can be achieved by setting the arc-shaped limit groove.

[0030] 2. The present application controls the movement of the XZ slide module in the X and Z directions by collecting the pressure changes of the pressure sensor in the pressure detection module, thereby realizing the positive adjustment of the transmitting end and the receiving end in the X and Z directions. The adjustment process in the X and Z directions only needs to collect the pressure data changes of the pressure sensor, and does not require complex calculations on the pressure data. The adjustment method is simple and the adjustment accuracy is high.

[0031] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings of the present invention are as follows.

[0033] Figure 1 This is a schematic structural diagram of the wireless charging device for an electric bicycle of the present invention at the initial moment.

[0034] Figure 2 It is a schematic structural diagram of the present invention when the wheel enters the arc-shaped limiting groove and stops.

[0035] Figure 3 It is a schematic diagram of the structure when the transmitting end and the receiving end of the present invention are facing each other.

[0036] Figure 4 It is a structural schematic diagram of the XZ slide module of the present invention.

[0037] Figure 5 It is a side view of the XZ slide module of the present invention.

[0038] Figure 6 It is a structural schematic diagram of the transmitting end of the present invention.

[0039] Figure 7 It is a structural schematic diagram of the receiving end of the present invention.

[0040] Figure 8 It is a schematic structural diagram of the limit block of the present invention.

[0041] Fig. 9 It is a schematic diagram of the internal structure of the slide box and the motor box of the present invention.

[0042] Fig.10 It is a cross-sectional view of the pressure detection module of the present invention.

[0043] In the figure: 1-transmitter; 101-first card rack; 102-first shell; 103-first ball bearing; 2-receiving end; 201-second card rack; 202-second shell; 203-ear; 3-XZ slide module; 301-channel steel bracket; 302-first slide rail; 303-first guide rail slider; 304-first screw rod; 305-first threaded slider; 306-first avoidance groove; 307-first motor; 308-support block; 309-second guide rail slider; 3 10-second threaded slider; 311-second slide rail; 312-second screw; 313-second motor; 314-slide box; 315-second avoidance groove; 316-motor box; 401-electric bicycle wheel; 402-frame; 5-limiting block; 501-arc-shaped limiting groove; 502-limiting plate; 503-guide bevel; 6-pressure detection module; 601-sleeve; 602-thrust rod; 603-pressure sensor; 604-pressure spring; 605-second ball. DETAILED DESCRIPTION

[0044] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0045] Embodiment 1:

[0046] like Figure 1 , Figure 2 and Figure 8 The wireless charging device for an electric bicycle shown in the figure comprises a transmitting end 1 and a receiving end 2, and is characterized in that it also comprises an XZ slide module 3, wherein the transmitting end 1 is mounted on the sliding end of the XZ slide module 3;

[0047] The receiving end 2 is installed on the frame 402 on one side of the electric bicycle wheel 401, and a limiting block 5 is set on one side of the XZ slide module 1. An arc-shaped limiting groove 501 is opened on the limiting block 5. When charging, the wheel 401 on the electric bicycle with one end of the receiving end 2 installed is stuck in the arc-shaped limiting groove 501.

[0048] like Figure 1 , Figure 6 , Figure 7 and Fig.10 As shown, the transmitting end 1 includes a first card holder 101 and a first housing 102 installed in the first card holder 101;

[0049] A wireless charging transmitter module is installed in the first shell 102 , and an input end of the wireless charging transmitter module is connected to a DC power supply. A plurality of first balls 103 are installed on the end surface of the first shell 102 , and a pressure detection module 6 is installed on the upper side wall of the first card holder 101 .

[0050] like Figure 1 , Figure 6 , Figure 7 and Fig.10 As shown, the receiving end 2 includes a second card holder 201 and a second housing 202 installed in the second card holder 201;

[0051] A wireless charging receiving module is installed in the second shell 202, and the output end of the wireless charging receiving module is connected to the battery load of the electric bicycle. During charging, the wireless charging receiving module is coupled with the wireless charging transmitting module to transmit electric energy. Two ears 203 corresponding to the two groups of pressure detection modules 6 are provided on the upper side wall of the second card holder 201.

[0052] In this embodiment, the arc-shaped limiting groove 501 is a groove with high ends and low middle; during installation, the vertical center line of the second housing 202 and the central axis of the electric bicycle wheel 401 are arranged in the same vertical plane, and the vertical center line of the first housing 102 and the width center line of the arc-shaped limiting groove 501 are arranged in the same vertical plane. Figure 2 As shown, when the electric bicycle wheel 401 enters the arc-shaped limiting groove 501 and stops, under the action of gravity, the bottom end of the electric bicycle wheel 401 will inevitably contact the bottom end of the middle position of the arc-shaped limiting groove 501, and the axis of the electric bicycle wheel 401 will inevitably be located directly above the center line of the arc-shaped limiting groove 501 in the width direction, that is, by setting the arc-shaped limiting groove 501, the transmitting end and the receiving end are directly facing each other in the Y direction.

[0053] In this embodiment, when the charging personnel pushes the electric bicycle wheel 401 into the arc-shaped limiting groove 501 and stops it, the rider clicks the start button of the device control box, and the device control system controls the XZ slide module 1 to drive the transmitting end to move along the X and Z directions, so as to achieve the transmitting end and the receiving end facing each other in three directions.

[0054] In this embodiment, the wireless charging transmitting module includes a high-frequency inverter circuit, a primary compensation circuit and a transmitting coil connected in sequence, and the wireless charging receiving module includes a receiving coil, a secondary compensation circuit and a rectifier filter circuit connected in sequence. The transmitting coil and the receiving coil constitute a coupling mechanism. The high-frequency inverter circuit uses a full-bridge high-frequency inverter, and its input end is connected to a DC power supply. The rectifier filter circuit uses a full-bridge rectifier filter, and its output end is connected to the load battery of the electric bicycle. The primary compensation circuit and the secondary compensation circuit use a symmetrically arranged LC network topology.

[0055] like Figure 1 and Figure 8 As shown, the limiting blocks 5 on both sides of the arc-shaped limiting groove 501 are further provided with limiting plates 502 , and the limiting blocks 5 at both ends of the arc-shaped limiting groove 501 are provided with guiding bevels 503 for facilitating the pushing of the electric bicycle.

[0056] In this embodiment, the width of the electric bicycle wheel is limited by setting the limit plate 502. The transmitting end of the electric bicycle exceeding the width cannot meet its wireless charging requirements. The guide angle 503 is set to facilitate the electric bicycle wheel to enter the arc groove 501.

[0057] like Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Fig. 9 As shown, the XZ slide module 3 includes a channel steel bracket 301 arranged in the vertical direction, the channel steel bracket 301, the end surface of the channel steel bracket 301 is installed with a first slide rail 302, the first slide rail 302 is slidably provided with a first guide rail slider 303, and the transmitting end 1 is installed on the first guide rail slider 303;

[0058] A first screw rod 304 is installed in the groove of the channel steel bracket 301, and the axial direction of the first screw rod 304 is the same as the length direction of the first slide rail 302. A first threaded slider 305 is threadedly connected to the first screw rod 304. A first avoidance groove 306 is opened on the end surface of the channel steel bracket 301. The upper end of the first threaded slider 305 passes through the first avoidance groove 306 and is connected to the first guide rail slider 303. A first motor 307 is also installed in the groove of the channel steel bracket 301, and the power output shaft of the first motor 307 is connected to one end of the first screw rod 304.

[0059] like Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Fig. 9As shown, the bottom end of the channel steel bracket 301 is installed on the support block 308, and the bottom end of the support block 308 is installed with a second guide rail slider 309 and a second threaded slider 310;

[0060] The second guide rail slider 309 is slidably connected to the second slide rail 311, the second threaded slider 310 is threadedly connected to the second screw rod 312, the second screw rod 312 is arranged parallel to the second guide rail slider 309, and one end of the second screw rod 312 is connected to the second motor 313;

[0061] The second screw rod 312 and the second guide rail slider 309 are both installed in a slide box 314. The slide box 314 is used to avoid the second avoidance groove 315 of the channel steel bracket 301. A motor box 316 is set on one side of the slide box 314, and the second motor 313 is installed in the motor box 316.

[0062] like Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Fig. 9 As shown, the pressure detection module 6 includes a sleeve 601 with an opening at one end, and a push rod 602 with one end slidably disposed in the sleeve 601;

[0063] A pressure sensor 603 is installed at the bottom end of the inner side of the sleeve 601, and a pressure spring 604 is also arranged in the sleeve 601 between the pressure sensor 603 and the push rod 602. The two ends of the pressure spring 604 are respectively connected to the end face of the push rod 602 and the end face of the pressure sensor 603. The sleeve 601 and the axis are perpendicular to the end face of the first shell 102. When the pressure spring 604 is in a free state, the front end of the push rod 602 extends out of the vertical plane where the end face of the first shell 102 is located, and a second ball 605 is installed at the front end of the push rod 602.

[0064] In this embodiment, there are two groups of pressure detection modules 6 , which are respectively arranged at the two ends of the upper side wall of the first card rack 101 , and a second ball 605 is installed at the front end of the push rod 602 .

[0065] In this embodiment, if Figure 1 As shown, at the initial moment, the transmitting end 1 (the first shell 102 and the first card holder 101) are both located below the minimum of their travel. When the electric bicycle wheel 401 is pushed into the arc-shaped limiting groove 501 and stops, the plane where the lower end surface of the push rod 602 is located is higher than the plane where the lower end surface of the second shell 202 is located (achieved by adjusting the vertical installation height of the receiving end 2).

[0066] In this embodiment, the distance from the front end of the push rod 602 to the end face of the first housing 102 is set to m (the diameter of the second ball 605 is the same as that of the first ball 103, and the height of the protruding end face is the same), and the threshold of the pressure sensor 603 is set to km, where k is the pressure coefficient of the pressure spring 604. When the electric bicycle wheel 401 is pushed into the arc-shaped limit groove 501 and stops, the second motor 312 is started to drive the channel steel bracket 301 and the transmitting end 1 to move toward the end close to the limit block 5. When the pressure of the pressure sensor 603 is equal to the pressure threshold, Figure 2 As shown, the first ball 103 is in contact with the end surface of the second shell 202, and the second motor 312 stops. At this time, the transmitting end 1 and the receiving end 2 are in contact with each other in the X direction.

[0067] In this embodiment, after the transmitting end 1 and the receiving end 2 are attached in the X direction, the first motor 307 is started to drive the transmitting end 1 to move upward. When the second ball 605 is separated from the end surface of the second shell 202 and the ear 203, the pressure of the pressure sensor 603 is equal to zero. Figure 3 As shown, at this time, the transmitting end 1 and the receiving end 2 are facing each other in the Z direction; the first motor 307 stops. In this embodiment, the second ball 605 and the first ball 103 are both freely rotatable balls, and the end surface of the second shell 202 is a smooth end surface. When the transmitting end 1 moves upward, the second ball 605 and the first ball 103 roll in the second shell 202 to prevent them from directly contacting the transmitting end 1 and causing damage to its surface.

[0068] Embodiment 2:

[0069] A method for adjusting the position of a wireless charging device for an electric bicycle is used to adjust the position of a transmitting end of the wireless charging device for an electric bicycle described in Example 1, and the specific steps are as follows:

[0070] S1: Push the electric bicycle wheel 401 with one end of the transmitting end installed into the arc-shaped limiting groove 501;

[0071] S2: Start the second motor 312 to drive the channel steel bracket 301 and the transmitting end 1 to move toward the end close to the limit block 5. When the pressure of the pressure sensor 603 is equal to the pressure threshold, the first ball 103 fits the end surface of the second shell 202, and the second motor 312 stops.

[0072] S3: Start the first motor 307 to drive the transmitting end 1 to move upward. When the pressure of the pressure sensor 603 is equal to zero, the second ball 605 is separated from the end surface of the second shell 202 and the ear 203, and the first motor 307 stops.

[0073] S4: Start the transmitting end 1 to supply power, and the transmitting end 1 is coupled with the receiving end 2 to charge the load battery of the electric bicycle.

[0074] In this embodiment, the present application controls the movement of the XZ slide module in the X and Z directions by collecting the pressure changes of the pressure sensor 603 in the pressure detection module 6, thereby realizing the positive adjustment of the transmitting end 1 and the receiving end 2 in the X and Z directions. The adjustment process in the X and Z directions only needs to collect the pressure data changes of the pressure sensor 603, and does not need to perform complex calculations on the pressure data. The adjustment method is simple and the adjustment accuracy is high.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A wireless charging device for an electric bicycle, comprising a transmitting end (1) and a receiving end (2), characterized in that: It also includes an XZ slide module (3), and the transmitting end (1) is installed on the sliding end of the XZ slide module (3); The receiving end (2) is mounted on a frame (402) on one side of a wheel (401) of the electric bicycle, a limiting block (5) is provided on one side of the XZ slide module (1), an arc-shaped limiting groove (501) is provided on the limiting block (5), and during charging, the wheel (401) on the electric bicycle with one end of the receiving end (2) mounted thereon is clamped in the arc-shaped limiting groove (501).

2. The wireless charging device for electric bicycle according to claim 1, characterized in that: The XZ slide module (3) comprises a channel steel bracket (301) arranged in a vertical direction, the channel steel bracket (301), a first slide rail (302) is installed on the end surface of the channel steel bracket (301), a first guide rail slider (303) is slidably arranged on the first slide rail (302), and the transmitting end (1) is installed on the first guide rail slider (303); A first screw rod (304) is installed in the groove of the channel steel bracket (301), and the axial direction of the first screw rod (304) is the same as the length direction of the first slide rail (302). A first threaded slider (305) is threadedly connected to the first screw rod (304). A first avoidance groove (306) is opened on the end surface of the channel steel bracket (301), and the upper end of the first threaded slider (305) passes through the first avoidance groove (306) and is connected to the first guide rail slider (303). A first motor (307) is also installed in the groove of the channel steel bracket (301), and the power output shaft of the first motor (307) is connected to one end of the first screw rod (304).

3. The wireless charging device for electric bicycle according to claim 2, characterized in that: The bottom end of the channel steel bracket (301) is mounted on a support block (308), and the bottom end of the support block (308) is mounted with a second guide rail slider (309) and a second threaded slider (310); The second guide rail slider (309) is slidably connected to the second slide rail (311), the second threaded slider (310) is threadedly connected to the second screw rod (312), the second screw rod (312) and the second guide rail slider (309) are arranged in parallel, and one end of the second screw rod (312) is connected to the second motor (313); The second screw rod (312) and the second guide rail slider (309) are both installed in a slide box (314), and the slide box (314) is used to avoid the second avoidance groove (315) of the channel steel bracket (301). A motor box (316) is set on one side of the slide box (314), and the second motor (313) is installed in the motor box (316).

4. The wireless charging device for electric bicycle according to claim 3, characterized in that: Limiting plates (502) are also provided on the limiting blocks (5) on both sides of the arc-shaped limiting groove (501); The limiting blocks (5) at both ends of the arc-shaped limiting groove (501) are provided with guiding bevels (503) for facilitating the pushing of the electric bicycle.

5. The wireless charging device for electric bicycle according to claim 4, characterized in that: The transmitting end (1) comprises a first card mounting frame (101) and a first housing (102) installed in the first card mounting frame (101); A wireless charging transmitter module is installed in the first shell (102), the input end of the wireless charging transmitter module is connected to a DC power supply, a plurality of first balls (103) are installed on the end surface of the first shell (102), and a pressure detection module (6) is installed on the upper side wall of the first card holder (101).

6. The wireless charging device for electric bicycle according to claim 5, characterized in that: The pressure detection module (6) comprises a sleeve (601) with an opening at one end, and a push rod (602) with one end slidably disposed in the sleeve (601); A pressure sensor (603) is installed at the bottom end of the inner side of the sleeve (601), and a pressure spring (604) is also arranged in the sleeve (601) between the pressure sensor (603) and the push rod (602). The two ends of the pressure spring (604) are respectively connected to the end surface of the push rod (602) and the end surface of the pressure sensor (603). The sleeve (601) and the axis are perpendicular to the end surface of the first shell (102). When the pressure spring (604) is in a free state, the front end of the push rod (602) extends out of the vertical plane where the end surface of the first shell (102) is located.

7. The wireless charging device for electric bicycle according to claim 6, characterized in that: The number of the pressure detection modules (6) is two groups, and the two groups of pressure detection modules (6) are respectively arranged at the two ends of the upper side wall of the first card placement frame (101), and a second ball (605) is installed at the front end of the push rod (602).

8. The wireless charging device for electric bicycle according to claim 7, characterized in that: The receiving end (2) comprises a second card placement frame (201) and a second housing (202) installed in the second card placement frame (201); A wireless charging receiving module is installed in the second shell (202), and the output end of the wireless charging receiving module is connected to the battery load of the electric bicycle. During charging, the wireless charging receiving module is coupled with the wireless charging transmitting end module to transmit electric energy.

9. The wireless charging device for electric bicycle according to claim 8, characterized in that: Two ears (203) corresponding to the two groups of pressure detection modules (6) are provided on the upper side wall of the second card placement frame (201); The center line of the second housing (202) in the vertical direction and the center axis of the electric bicycle wheel (401) are located in the same vertical plane, and the center line of the first housing (102) in the vertical direction and the center line of the arc-shaped limiting groove (501) in the width direction are located in the same vertical plane.

10. A method for adjusting the position of a wireless charging device for an electric bicycle, characterized in that: The method for adjusting the position of the transmitting end of the wireless charging device for electric bicycle according to any one of claims 1 to 9 comprises the following specific steps: S1: Pushing the electric bicycle wheel (401) equipped with one end of the transmitting end into the arc-shaped limiting groove (501); S2: starting the second motor (312) to drive the channel steel support (301) and the transmitting end (1) to move toward the end close to the limit block (5); when the pressure of the pressure sensor (603) is equal to the pressure threshold, the first ball (103) fits the end surface of the second shell (202), and the second motor (312) stops; S3: starting the first motor (307) to drive the transmitting end (1) to move upward, and when the pressure of the pressure sensor (603) is equal to zero, the second ball (605) is separated from the end surface of the second shell (202) and the support ear (203), and the first motor (307) stops; S4: Start the transmitting end (1) to supply power, and the transmitting end (1) is coupled with the receiving end (2) to charge the load battery of the electric bicycle.

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