Wireless charging device for electric vehicle

Abstract

The invention relates to the technical field of electric vehicle charging, and discloses an electric vehicle wireless charging device, which comprises a charging pile, a limiting mechanism and a wireless charging mechanism, the limiting mechanism comprises a shell and a limiting piece arranged on the shell and used for limiting a front wheel of the electric vehicle, a control panel for transmission of the limiting piece is slidably connected to the interior of the shell, and an inclined notch is formed in one side of the top of the shell. According to the wireless charging device for the electric vehicle, through the arrangement of the wireless charging mechanism, wireless charging work can be conveniently conducted on the electric vehicle, through a wired charging port formed in the top of the charging pile, charging work can be conveniently conducted on the electric vehicle in a wired mode, and through the arrangement of a limiting piece in the limiting mechanism, the wireless charging work is facilitated; the front wheel of the electric vehicle can be fixed during wired charging or wireless charging, the stability of the electric vehicle during charging is guaranteed, the wireless charging efficiency of the electric vehicle is improved, and a good vehicle self-locking function is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle charging, and specifically to a wireless charging device for electric vehicles. Background Art

[0002] With the wide application of electric vehicles, their charging technologies have also developed rapidly. However, the existing charging methods for electric vehicles mainly rely on wired charging, which has some limitations. For example, wired charging requires plugging and unplugging the charging cable, the operation is relatively cumbersome, and the charging cable is prone to damage or entanglement, bringing inconvenience to users. In addition, during the wired charging process, it is difficult to ensure the stability of the electric vehicle. Especially when the ground is uneven or there is a fault with the electric vehicle's support leg, it is easy to cause the electric vehicle to tip over, which will not only damage the electric vehicle and the charging equipment, but may also lead to safety accidents. At the same time, wired charging cannot effectively prevent malicious personnel from swapping or stealing electricity from the charging electric vehicle, presenting certain safety hazards.

[0003] In recent years, wireless charging technology has gradually emerged, providing a new solution for electric vehicle charging. Wireless charging realizes the non-contact transmission of energy through electromagnetic induction or magnetic field resonance, etc., without the need to plug and unplug the charging cable, making it more convenient to use. However, most of the existing wireless charging devices only focus on the charging function itself and lack measures for fixing and limiting the electric vehicle during the charging process. This may cause the electric vehicle to move due to external forces during charging, affecting the efficiency and stability of wireless charging, and even may cause collision damage between the charging equipment and the electric vehicle.

[0004] In addition, the existing wireless charging devices in the prior art usually lack the function of adjusting the charging position and cannot be flexibly adjusted according to different models and parking positions of electric vehicles. When the distance between the electric vehicle and the charging device is relatively far or the position does not match, the efficiency of wireless charging will drop significantly, or even it cannot charge normally. This limits the wide application of wireless charging technology in the field of electric vehicles.

[0005] In summary, the existing electric vehicle charging technologies have the following problems: wired charging has a cumbersome operation, poor stability, and safety hazards; wireless charging devices lack measures for fixing and limiting the electric vehicle, and the charging efficiency and stability cannot be guaranteed; the wireless charging position lacks the adjustment function and cannot meet the charging needs of different electric vehicles. Summary of the Invention

[0006] (1) Technical Problems to be Solved

[0007] In view of the deficiencies of the prior art, the present invention provides a wireless charging device for electric vehicles. Through the setting of the wireless charging mechanism, it is convenient to carry out wireless charging work on electric vehicles. Through the wired charging port provided on the top of the charging pile, it is convenient to charge electric vehicles by wired means. Through the setting of the limiting member in the limiting mechanism, the front wheels of the electric vehicle during wired charging or wireless charging can be fixed, which not only ensures the stability of the electric vehicle during charging and improves its wireless charging efficiency, but also has a good vehicle self-locking function, solving the problem that when there is a fault in the electric vehicle's support legs or the ground is inclined, the stability of the electric vehicle cannot be guaranteed during charging, and preventing malicious personnel from swapping the electric vehicle during charging and stealing electricity.

[0008] (II) Technical Solution

[0009] To achieve the above object, the present invention provides the following technical solution: A wireless charging device for electric vehicles, including a charging pile, a wired charging port is provided on the charging pile, and a limiting mechanism and a wireless charging mechanism are further included;

[0010] The limiting mechanism includes a housing and a limiting member provided on the housing for limiting the front wheels of the electric vehicle. A control board for driving the limiting member is slidably connected inside the housing, and an inclined notch is provided on one side of the top of the housing;

[0011] The wireless charging mechanism includes a control box with walking wheels at the bottom and a wireless charging seat provided on the control box.

[0012] Preferably, the limiting member includes a pushing plate slidably connected to the top of the housing. Clamping units are provided on both sides of the pushing plate, and the pushing plate is connected to the control board through two connecting rods.

[0013] Preferably, the clamping unit includes a sector-shaped clamping plate hinged to one side of the pushing plate, a torsion spring is installed at the hinged end of the sector-shaped clamping plate, and a locking shaft inserted into the through hole of the wheel hub is fixedly connected to the inner side surface of the sector-shaped clamping plate;

[0014] Two control shafts for driving the closing of the sector-shaped clamping plate are fixedly connected to the top of the housing.

[0015] Preferably, a spring group for squeezing and pushing the control board and a first electromagnet for magnetically adsorbing the control board are installed on one side of the inner wall of the housing.

[0016] Preferably, the limiting mechanism further includes a stopping member for stopping the front wheels of the electric vehicle;

[0017] The stopping member includes a stopping frame provided inside the inclined notch.

[0018] Preferably, the stopping frame is hinged inside the inclined notch through a rotating shaft, and a hinge seat is slidably connected to the inner bottom of the housing. The hinge seat is hinged to the bottom of the stopping frame through an inclined hinge frame;

[0019] The hinge seat is connected to the control board through two transmission rods.

[0020] Preferably, one end of each of the two transmission rods is fixedly connected to the hinge seat, and the other ends of the two transmission rods penetrate through the control board and extend to the inner side surface of the control board. Two through holes for the transmission rods to penetrate and extend are formed inside the control board. The other ends of the two transmission rods are fixedly connected with limit blocks, and a buffer part is arranged between the limit blocks and the control board.

[0021] Preferably, the wireless charging base is slidably connected to the control frame in a vertical sliding manner through two guide rods. Two connecting shafts are arranged inside the control frame. Connecting frames for jacking up the wireless charging base upward are arranged on the two connecting shafts. One end of each of the two connecting shafts is connected to the control board.

[0022] (III) Advantageous Effects

[0023] Compared with the prior art, the present invention provides an electric vehicle wireless charging device, which has the following advantageous effects:

[0024] 1. Through the setting of the wireless charging mechanism, the present invention facilitates the wireless charging of electric vehicles. Through the wired charging port arranged at the top of the charging pile, it is convenient to charge the electric vehicle by wired means. Through the setting of the limiting member in the limiting mechanism, the front wheels of the electric vehicle during wired charging or wireless charging can be fixed, which not only ensures the stability of the electric vehicle during charging, improves its wireless charging efficiency, but also has a good vehicle self-locking function, solving the problems that when there are faults in the electric vehicle's legs or the ground is inclined, the stability of the electric vehicle cannot be ensured during charging, and preventing malicious personnel from swapping the electric vehicle during charging and stealing electricity.

[0025] 2. Through the stopping frame in the stopping member, the front tire of the electric vehicle moving onto the housing can be limited, further improving the stability of the limiting mechanism for limiting and fixing the front wheel of the electric vehicle and the stability during wireless charging. The hinge seat is connected to the control board through two transmission rods, so as to drive the hinge seat to move by using the movement of the control board, forming the self-unfolding movement of the stopping frame. And through the limit blocks fixedly connected to one ends of the two transmission rods, and a buffer part is arranged between the limit blocks and the control board, so that the control of the stopping frame can be triggered only after the control board moves a certain distance. Furthermore, when the electric vehicle tire completely moves to the top of the housing, the extension control of the stopping frame is carried out, which has a good linkage function and improves the orderliness during linkage.

[0026] 3. In the present invention, both connecting shafts are connected to the control board, so that when the control board moves, it can synchronously drive the two connecting shafts to rotate, thereby driving the two groups of connecting frames to perform fan-shaped flipping, and then driving the wireless charging base to be jacked up, forming a self-unfolding height adjustment, shortening the distance from the electromagnetic receiving unit of the electric vehicle, thereby improving its charging efficiency, effectively utilizing the driving force when the front wheels of the electric vehicle are fixed, realizing the energy-saving and environmental protection performance of its charging device, and solving the problem in the prior art that the wireless charging position lacks an adjustment function, so that when the distance between the two is large, it is easy to affect its charging efficiency and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of the wireless charging device for an electric vehicle according to the present invention;

[0028] Figure 2 is the present invention Figure 1 a combined schematic diagram of the limiting mechanism and the wireless charging mechanism in;

[0029] Figure 3 is the present invention Figure 2 a schematic structural diagram of the housing in;

[0030] Figure 4 is the present invention Figure 3 a structural sectional view of the housing in;

[0031] Figure 5 is the present invention Figure 3 a schematic structural diagram of the push plate in;

[0032] Figure 6 is the present invention Figure 4 a schematic structural diagram of the control board in;

[0033] Figure 7 is the present invention Figure 6 a transmission schematic diagram of the control board and the stopping member in;

[0034] Figure 8 is the present invention Figure 2 a disassembled schematic diagram of the wireless charging mechanism in;

[0035] Figure 9 is the present invention Figure 2 a schematic structural diagram of the connecting shaft in.

[0036] In the figure: 1, charging pile; 2, wiring frame;

[0037] 3, limiting mechanism; 31, housing; 32, control board; 33, spring group; 34, first electromagnet;

[0038] 35. Limiting member; 351. Pushing plate; 352. Connecting rod; 353. Sector clamping plate; 354. Torsion spring; 355. Locking shaft; 356. Control shaft;

[0039] 36. Stopping member; 361. Stopping frame; 362. Hinge seat; 363. Hinge frame; 364. Transmission rod; 365. Limiting block;

[0040] 4. Wireless charging mechanism; 41. Control box; 42. Wireless charging base; 43. Guide rod; 44. Connecting frame;

[0041] 45. Connecting shaft; 451. Sleeve; 452. Telescopic rod; 453. Cylindrical block; 454. Arc-shaped guide groove; 455. Guide block; 456. Second electromagnet. Specific implementation mode

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0043] Embodiment 1:

[0044] Referring to the attached Figures 1 to 9 , an electric vehicle wireless charging device includes a charging pile 1, a wired charging port is arranged on the charging pile 1, and further includes a limiting mechanism 3 and a wireless charging mechanism 4. The limiting mechanism 3 is connected to the charging pile 1 through a wiring frame 2;

[0045] Through the setting of the wireless charging mechanism 4, it is convenient to carry out wireless charging work on the electric vehicle. Through the wired charging port arranged on the top of the charging pile 1, it is convenient to charge the electric vehicle by wire. The two charging methods are effectively combined, meeting the charging work of different electric vehicles and improving the functionality and practicality of the charging device;

[0046] The limiting mechanism 3 includes a housing 31 and a limiting member 35 arranged on the housing 31 for limiting the front wheels of the electric vehicle. A control plate 32 for driving the limiting member 35 is slidably connected inside the housing 31, and an inclined notch is arranged on one side of the top of the housing 31;

[0047] Through the setting of the limiting member 35 in the limiting mechanism 3, the front wheel of the electric vehicle during wired or wireless charging can be fixed, which not only ensures the stability of the electric vehicle during charging, improves its wireless charging efficiency, but also has a good vehicle self-locking function. It solves the problems that when the support leg of the electric vehicle has a fault or the ground is inclined, the stability of the electric vehicle cannot be guaranteed during charging, and it prevents malicious personnel from swapping the electric vehicle during charging to steal electricity. Moreover, it can effectively prevent the surrounding vehicles from being moved, causing the electric vehicle to tip over and resulting in collision damage to the electric vehicle and the charging mechanism;

[0048] The wireless charging mechanism 4 includes a control box 41 with walking wheels arranged at the bottom and a wireless charging seat 42 arranged on the control box 41;

[0049] An electromagnetic emission unit is arranged on the wireless charging seat 42, an electromagnetic receiving unit adapted to the electromagnetic emission unit is installed at the bottom end of the electric vehicle body, the electromagnetic receiving unit is connected to the battery in the electric vehicle body, and the electromagnetic emission unit is connected to the mains; when the electromagnetic emission unit works, it emits charged electromagnetic waves, and the electromagnetic receiving unit at the bottom end of the electric vehicle body receives the charged electromagnetic waves and converts them into electric energy and then charges the battery, forming wireless charging of the electric vehicle.

[0050] Refer to the appendix Figures 2 to 6 As shown in the figure, the limiting member 35 includes a push plate 351 slidably connected to the top of the housing 31. Clamping units are arranged on both sides of the push plate 351, and the push plate 351 is connected to the control board 32 through two connecting rods 352;

[0051] Through the setting of the limiting member 35, it is used to limit the front wheel of the electric vehicle. By arranging the clamping units on both sides of the push plate 351, the stability of the limiting treatment of the front wheel of the electric vehicle can be increased;

[0052] When the user moves the front wheel of the electric vehicle to the top of the housing 31 through the inclined notch, the driving force of the front wheel can push the push plate 351. Since the push plate 351 is fixedly connected to the control board 32 through two connecting rods 352, it is convenient to drive the control board 32 to move synchronously when the push plate 351 moves, realizing the control work of the subsequent stop member 36 and the wireless charging mechanism 4.

[0053] Refer to the appendix Figure 5 As shown in the figure, the clamping unit includes a sector clamping plate 353 hinged to one side of the push plate 351. A torsion spring 354 is installed at the hinged end of the sector clamping plate 353, and a locking shaft 355 inserted into the through hole of the wheel hub is fixedly connected to the inner side surface of the sector clamping plate 353;

[0054] The sector clamping plate 353 is connected to the push plate 351 in a hinged manner, and a torsion spring 354 is installed at the hinged end. This not only facilitates applying a driving force to the sector clamping plate 353 to make the sector clamping plate 353 form a sector shape for clamping the tire, but also allows the sector clamping plate 353 to automatically unfold when the driving force on the sector clamping plate 353 is lost, thereby facilitating the subsequent better relocation of the fully charged electric vehicle.

[0055] By fixedly connecting a locking shaft 355 inserted into the through hole of the wheel hub to the inner side of the sector clamping plate 353, after the tire is clamped by the sector clamping plate 353, the locking shaft 355 can be inserted into the intermediate hole of the tire wheel hub to form a self-locking operation of the tire, effectively preventing malicious personnel from swapping the electric vehicle during the charging process and stealing electricity.

[0056] Two control shafts 356 for driving the closing of the sector clamping plate 353 are fixedly connected to the top of the housing 31.

[0057] Through the arrangement of the control shaft 356, when the push plate 351 is about to be fully unfolded, it can limit the two sector clamping plates 353, enabling the two sector clamping plates 353 to wrap around both sides of the front tire of the electric vehicle to form a self-clamping operation of the front tire, improving the stability of the electric vehicle during charging.

[0058] Refer to the appendix Figure 4 On one side of the inner wall of the housing 31, a spring group 33 for squeezing and pushing the control board 32 and a first electromagnet 34 for magnetically adsorbing the control board 32 are installed. The control board 32 is made of a metal material that can be electromagnetically adsorbed.

[0059] Through the arrangement of the spring group 33, it is used to squeeze the control board 32 after movement, so that after the electric vehicle finishes charging and the vehicle is moved away, the control board 32 can automatically reset.

[0060] By installing a first electromagnet 34 for electromagnetically adsorbing the control board 32 inside the housing 31, when the front wheel of the electric vehicle is limited and clamped by the limiting member 35 and the stopping member 36, it can ensure the stability of the limiting and clamping. This not only effectively prevents malicious personnel from swapping the electric vehicle during the charging process and stealing electricity, but also can effectively prevent the surrounding vehicles from being moved, causing the electric vehicle to tip over and resulting in collision damage to the electric vehicle and the charging mechanism.

[0061] Embodiment 2: The difference from Embodiment 1 is as follows;

[0062] Refer to the appendix Figure 4 、 Figure 6 and Figure 7, the limiting mechanism 3 further includes a stopping member 36 for stopping the front wheel of the electric vehicle; the stopping member 36 includes a stopping frame 361 disposed inside the inclined notch;

[0063] Through the stopping frame 361 in the stopping member 36, the front tire of the electric vehicle moving onto the housing 31 can be limited, further improving the stability of the limiting mechanism 3 in limiting and fixing the front wheel of the electric vehicle and the stability during wireless charging.

[0064] The stopping frame 361 is hinged inside the inclined notch through a rotating shaft, and a hinge seat 362 is slidably connected to the inner bottom of the housing 31. The hinge seat 362 is hinged to the bottom of the stopping frame 361 through an inclined hinge frame 363;

[0065] When the hinge seat 362 is driven left and right by an electric cylinder or other driving member, the inclined hinge frame 363 can be driven to perform a sector motion, and then the stopping frame 361 can be driven to perform a sector motion around the hinged position of the rotating shaft, and then the front tire of the electric vehicle can be stopped;

[0066] The hinge seat 362 is connected to the control board 32 through two transmission rods 364;

[0067] By connecting the hinge seat 362 to the control board 32 through two transmission rods 364, it is convenient to drive the hinge seat 362 to move by utilizing the movement of the control board 32, forming a self-unfolding movement of the stopping frame 361, which has a good linkage function, does not require a separate electric driving member for driving, and improves the convenience of operation and the synchronization of limiting clamping.

[0068] One end of each of the two transmission rods 364 is fixedly connected to the hinge seat 362, and the other end of each of the two transmission rods 364 penetrates through the control board 32 and extends to the inner side surface of the control board 32. Two through holes for the transmission rods 364 to penetrate and extend are formed inside the control board 32, and a limiting block 365 is fixedly connected to the other end of each of the two transmission rods 364, and a buffer portion is provided between the limiting block 365 and the control board 32;

[0069] By fixedly connecting a limiting block 365 to one end of each of the two transmission rods 364 and providing a buffer portion between the limiting block 365 and the control board 32, it is convenient to trigger the control of the stopping frame 361 only after the control board 32 moves a certain distance, and then it is convenient to perform the stretching control of the stopping frame 361 only when the electric vehicle tire completely moves to the top of the housing 31, which has a good linkage function and improves the orderliness during linkage.

[0070] Embodiment 3: Different from Embodiment 1;

[0071] Refer to the appendix Figure 2 、 Figure 4 、Figure 6 , Figure 8 and Figure 9 , the wireless charging stand 42 is slidably connected to the control box 41 in a vertical sliding manner through two guide rods 43. Two connecting shafts 45 are arranged inside the control box 41. A connecting frame 44 for jacking up the wireless charging stand 42 upward is arranged on the two connecting shafts 45. One ends of the two connecting shafts 45 are both connected to the control board 32;

[0072] By connecting the two connecting shafts 45 to the control board 32, when the control board 32 moves, it can synchronously drive the two connecting shafts 45 to rotate, and then drive the two groups of connecting frames 44 to perform fan-shaped flipping, and then can drive the wireless charging stand 42 to jack up, forming a self-unfolding height adjustment, shortening the distance from the electromagnetic receiving unit of the electric vehicle, thereby improving its charging efficiency, effectively utilizing the driving force when the front wheels of the electric vehicle are fixed, realizing the energy-saving and environmental protection performance of its charging device, and solving the problem in the prior art that the wireless charging position lacks an adjustment function, so that when the distance between the two is large, it is easy to affect its charging efficiency and stability.

[0073] The connecting shaft 45 includes a sleeve 451 rotatably connected to the inside of the control box 41. The connecting frame 44 is fixed to the outer surface of the sleeve 451. A telescopic rod 452 is slidably connected to the inside of the sleeve 451 in a telescopic sliding manner. One end of the telescopic rod 452 extends into the inside of the housing 31 and is rotatably connected to the control board 32. A cylindrical block 453 is fixedly connected to the outer surface of the telescopic rod 452. An arc-shaped guide groove 454 is formed on the outer surface of the cylindrical block 453. A guide block 455 for inserting into the arc-shaped guide groove 454 is fixedly connected to the bottom of the inner wall of the housing 31. A second electromagnet 456 is embedded in the sleeve 451. The telescopic rod 452 is made of a metal material that can be electromagnetically adsorbed;

[0074] By rotatably connecting the telescopic rod 452 in the connecting shaft 45 to the control board 32, when the control board 32 drives the telescopic rod 452 to perform telescopic movement, it can synchronously drive the cylindrical block 453 to move. By sliding the guide block 455 inside the arc-shaped guide groove 454, when the cylindrical block 453 moves, it can synchronously rotate, and then drive the connecting frame 44 to flip through the sleeve 451, realizing the extension adjustment of the wireless charging stand 42;

[0075] It should be noted here that the arc-shaped guiding angle of the arc-shaped guide groove 454 is 90 degrees, and the flipping track distance of 90 degrees is equal to the total movement distance of the control board 32;

[0076] It is composed of a sleeve 451 and a telescopic rod 452 through a connecting shaft 45, and the telescopic rod 452 is installed inside the sleeve 451 in a telescopic sliding manner. Not only is it convenient for the telescopic rod 452 to drive the sleeve 451 to rotate synchronously when rotating, forming the extension adjustment of the wireless charging base 42, but also the position of the wireless charging mechanism 4 can be adjusted, so as to meet the wireless charging work at different positions;

[0077] Moreover, when the position of the wireless charging mechanism 4 is adjusted, it will not affect the control board 32 of it to adjust the extension of the wireless charging base 42, solving the problem in the prior art that due to the batteries and electromagnetic receiving units at the bottoms of different electric vehicles being in different positions under the vehicle body, it is impossible to better match during wireless charging, affecting the charging effect;

[0078] Through the setting of the second electromagnet 456, it is used to adsorb the metal telescopic rod 452 after the charging is completed by being energized, so that the wireless charging mechanism 4 after the position adjustment can be automatically reset, facilitating the wireless charging work of subsequent mass electric vehicles.

[0079] Embodiment 4: What is different from Embodiment 1 is;

[0080] An electric vehicle wireless charging device further includes a ground transmitting end, a vehicle-mounted receiving end and an energy transmission link. It is characterized in that it further includes a high-frequency power supply, and the high-frequency power supply is composed of a three-phase bridge uncontrolled rectifier circuit, a Buck circuit and a full-bridge inverter circuit, and the high-frequency power supply is designed and controlled in the following ways: The Buck circuit uses PWM technology for modulation to achieve an efficient DC buck function;

[0081] The inverter circuit uses phase-shifted modulation technology to optimize the performance of the inverter circuit and improve the energy transmission efficiency; establish a simplified load model to analyze the performance of the high-frequency power supply under different load conditions, providing a theoretical basis for circuit design; use PI control to perform closed-loop adjustment on the modulation technologies of the Buck circuit and the inverter circuit to ensure the stability and dynamic response ability of the system; design a control circuit based on the TMS320C6416 chip to achieve precise control of the high-frequency power supply;

[0082] According to the topological structure of the high-frequency power supply, design the electrical parameters and component selection of the main circuit to ensure the reliability and efficiency of the circuit; design a power supply circuit that meets the requirements of the control chip and other auxiliary circuits to ensure the stable operation of the system; aiming at the characteristics that the wireless charging system is vulnerable to electromagnetic interference, design anti-interference measures for the system, including electromagnetic shielding, filter circuits, etc., to improve the anti-interference ability of the system; complete the initialization operation when the system starts, including hardware device initialization, variable initialization, etc.; realize the real-time monitoring of the system operation state, respond to abnormal situations in a timely manner through the interrupt mechanism, and use the A / D conversion module to collect key signals to provide data support for the control algorithm;

[0083] Design the ePWM module to generate precise pulse signals and control the switching actions of the Buck circuit and the inverter circuit; adopt software filtering algorithms to filter the collected signals, remove noise interference, and improve signal quality; design a software protection mechanism to detect and protect possible faults in the system to ensure the safe operation of the system; use PSCAD / EMTDC software to establish a simulation model of the high-frequency power supply, simulate and analyze the performance of the system, and verify the rationality of the design.

[0084] Build an experimental platform to conduct actual tests on the high-frequency power supply, including tests on charging speed, charging efficiency, safety, etc., to verify the actual performance of the system; develop a mobile phone APP application program using JAVA language to realize the interaction functions between users and the wireless charging system, such as charging status query, charging control, etc.

[0085] Design a simple and user-friendly interface to enhance the user experience; adopt the SQLite lightweight database to realize the storage and management of charging data and provide support for the data analysis and optimization of the system.

[0086] In the main circuit design of the high-frequency power supply, the PWM modulation technology of the Buck circuit realizes the precise regulation of the output voltage by accurately controlling the conduction time of the switching device, improving the efficiency of DC bucking.

[0087] In the main circuit design of the high-frequency power supply, the phase-shift modulation technology of the inverter circuit optimizes the output waveform of the inverter circuit by adjusting the phase difference of the switching devices, improving the energy transfer efficiency.

[0088] In the control circuit design of the high-frequency power supply, the PI control is adopted to perform closed-loop regulation on the modulation technologies of the Buck circuit and the inverter circuit, monitor the output state of the system in real time, and adjust the control parameters according to the feedback signal to ensure the stability and dynamic response ability of the system.

[0089] In the hardware circuit design of the high-frequency power supply, aiming at the characteristics that the wireless charging system is vulnerable to electromagnetic interference, design anti-interference measures for the system, including electromagnetic shielding, filter circuits, etc., to improve the anti-interference ability of the system.

[0090] In the DSP software design of the high-frequency power supply, adopt software filtering algorithms to filter the collected signals, remove noise interference, and improve signal quality.

[0091] It should be noted that the term "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising said element.

[0092] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wireless charging device for an electric vehicle, comprising a charging pile, wherein the charging pile is provided with a wired charging port, wherein: It also includes a limiting mechanism and a wireless charging mechanism; The limiting mechanism comprises a housing and a limiting member arranged on the housing for limiting the front wheel of the electric vehicle, a control plate for transmitting the limiting member is slidably connected inside the housing, and an inclined notch is arranged on one side of the top of the housing; The wireless charging mechanism comprises a control frame with running wheels at the bottom and a wireless charging seat arranged on the control frame.

2. The wireless charging device for electric vehicles according to claim 1, characterized in that: The limiting member comprises a pushing plate slidably connected to the top of the shell, clamping units are arranged on both sides of the pushing plate, and the pushing plate is connected to the control plate through two connecting rods.

3. The wireless charging device for electric vehicles according to claim 1, characterized in that: The clamping unit comprises a fan-shaped clamping plate hinged to one side of the pushing plate, and a torsion spring is installed at the hinged end of the fan-shaped clamping plate, and the inner side surface of the fan-shaped clamping plate is fixedly connected with a locking shaft inserted into the through hole of the wheel hub; The top of the shell is fixedly connected with two control shafts for driving the fan-shaped clamping plates to close.

4. The wireless charging device for electric vehicles according to claim 2, characterized in that: A spring group for squeezing and pushing the control board and a No. 1 electromagnet for magnetically adsorbing the control board are installed on one side of the inner wall of the shell.

5. The wireless charging device for electric vehicles according to claim 2, characterized in that: The limiting mechanism also includes a stopping member for stopping the front wheel of the electric vehicle; The stop member includes a stop frame arranged inside the inclined recess.

6. The wireless charging device for electric vehicles according to claim 5, characterized in that: The stop frame is hinged to the inside of the inclined recess through a rotating shaft, and the inner bottom of the shell is slidably connected with a hinge seat, and the hinge seat is hinged to the bottom of the stop frame through the tilted hinge frame; The articulated seat is connected to the control board via two transmission rods.

7. The wireless charging device for electric vehicles according to claim 6, characterized in that: One end of the two transmission rods is fixedly connected to the hinge seat, and the other ends of the two transmission rods pass through the control board and extend to the inner side of the control board. Two through holes are provided inside the control board for the transmission rods to pass through and extend to, and the other ends of the two transmission rods are fixedly connected to the limit block, and a buffer portion is provided between the limit block and the control board.

8. The wireless charging device for electric vehicles according to claim 7, characterized in that: The wireless charging seat is slidably connected to the control frame by two guide rods in an up and down sliding manner. Two connecting shafts are arranged inside the control frame. The two connecting shafts are provided with a connecting frame for lifting the wireless charging seat upward. One end of the two connecting shafts is connected to the control board.

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