Electric vehicle wireless charging module

Abstract

The application relates to the technical field of new energy automobile charging, in particular to a wireless charging module for electric vehicles, which comprises a ground base and a wireless electromagnet, the top end of the ground base is movably provided with a plurality of openable and closable barrier doors for protecting the wireless electromagnet, and the bottom end of the wireless electromagnet is fixedly connected with a power supply seat; a plurality of hydraulic push rods for lifting the wireless electromagnet are arranged in the ground base, and a cross beam is connected between the hydraulic push rods; a second air cylinder and a third air cylinder are hinged to the inner wall of the ground base, the output ends of the second air cylinder and the third air cylinder are connected to different positions of the cross beam respectively, and the positions of the cross beam and the wireless electromagnet are adjusted. Through the liftable wireless electromagnet and the openable and closable barrier doors, automatic alignment, foreign matter protection, anti-rolling and stable charging under harsh environments are realized, and the safety, convenience and reliability of wireless charging are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle charging technology, specifically to a wireless charging module for electric vehicles. Background Technology

[0002] As one of the hottest topics in the global automotive industry, the research and development of electric vehicles is becoming increasingly mature, and related technical challenges, including electric drive, coordinated control, energy management, and vehicle integration, have been greatly improved. Currently, fixed-point wireless charging technology for electric vehicles has solved the safety hazards of wired charging stations, such as contact sparking, cable burning, starting the electric vehicle without unplugging it, poor climate adaptability, the need for exposed sections, and lack of flexibility and convenience. This represents a qualitative leap in electric vehicle parking charging technology. Existing wireless charging systems typically have the transmitting coil fixedly installed in the ground or buried under the parking space. After the vehicle is parked, the receiving coil under the vehicle and the transmitting coil on the ground achieve power transfer through electromagnetic induction.

[0003] However, these fixed wireless charging modules have significant limitations in practical applications: First, because the transmitting coil is exposed to the ground for extended periods or only covered by a thin plate, metal objects (such as can tabs, nails, keys, etc.), small animals, and fallen leaves in the parking space environment can easily fall into the charging area. When the transmitting coil is working, the alternating magnetic field will cause eddy currents in the metal objects, causing them to heat up rapidly, with temperatures exceeding 95°C. This can not only burn animals but also ignite flammable materials such as dried leaves, posing a serious safety risk. Mud, snow, and leaves can also severely hinder magnetic field transmission, reducing charging efficiency. Second, if the transmitting coil is laid directly on the ground, the tires of vehicles repeatedly run over it when entering and exiting the parking space, causing coil deformation, insulation damage, and even internal wire breakage, greatly shortening the device's lifespan. Furthermore, wireless charging requires high alignment precision between the transmitting and receiving coils (usually within ±5cm). The receiving plate under the car and the transmitting plate on the ground need to be precisely aligned. Even a slight deviation will cause a sharp drop in charging efficiency or even prevent charging. Compared to wired charging, which does not require deliberate alignment, this increases the difficulty of parking for the driver and affects the convenient experience of stopping and charging immediately.

[0004] To address the aforementioned issues, some improvements have been proposed in existing technologies. For example, patent publication number CN211106996U discloses a height-adjustable wireless charging transmitter, which includes a base with a wireless transmitter embedded within it. The bottom of the wireless transmitter is connected to the interior of the base via a lifting fork. The output ends of two drive motors are each connected to a lead screw, and each lead screw is fitted with a threaded nut. A lifting guardrail protects the transmitter during charging, preventing the entry of foreign objects and protecting the wireless transmitter inside, ensuring its anti-fouling function. Utilizing the principle of the lead screw and lead screw nut moving in coordination, the lifting fork is pushed by an L-shaped push rod. The lateral movement of the nut is converted into the vertical movement of the wireless transmitter, saving vertical installation space and achieving stable lifting of the transmitter. The protective cover is fixed to the wireless transmitter, allowing the lifting guardrail to rise and fall with the transmitter, eliminating the need for a separate lifting drive mechanism for the guardrail, resulting in good stability and saving installation space.

[0005] However, in the aforementioned existing technologies, the protective cover is fixed to the wireless transmitter plate. This means that the top of the transmitter plate reduces charging efficiency during charging due to the cover's presence, and the high temperatures generated during charging are difficult to dissipate, posing a potential safety hazard. Furthermore, the transmitter plate's fixed position prevents horizontal translation or rotational adjustments based on the vehicle's actual parking location. Drivers still need to precisely park the vehicle to ensure the transmitter plate aligns with the receiving plate under the car, making parking difficult. Additionally, the protective cover slides along the sides of the base, making it susceptible to being pushed out by friction when a vehicle passes over it, and prone to deformation or jamming when run over, further compromising protection and reliability. Therefore, there is an urgent need for a wireless charging module that can protect the transmitter coil from foreign object accumulation affecting charging efficiency and mitigating safety hazards caused by high temperatures during charging, while also providing reliable resistance to being run over and eliminating the need for precise parking by the driver. Summary of the Invention

[0006] The purpose of this invention is to provide a wireless charging module for electric vehicles to solve the problems mentioned in the background art, such as high accuracy requirements for charging alignment, difficulty in parking, impact of foreign object accumulation on charging efficiency, safety hazards caused by high temperatures, and susceptibility to damage from being run over.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a wireless charging module for electric vehicles, comprising a ground base and a wireless magnet, wherein the wireless magnet is located inside the ground base, and the top of the ground base is movably provided with multiple openable and closable barrier doors for protecting the wireless magnet, and the bottom of the wireless magnet is fixedly connected to a power supply base; The ground base is equipped with multiple hydraulic push rods for raising and lowering the radio magnet. The extended ends of the multiple hydraulic push rods are hinged to the bottom of the radio magnet, and a cross beam is connected between the multiple hydraulic push rods. A stabilizing seat for placing the power supply base is installed at the upper end of the cross beam. The inner wall of the ground base is hinged with a second pneumatic cylinder and a third pneumatic cylinder. The output ends of the second pneumatic cylinder and the third pneumatic cylinder are respectively connected to different positions of the cross beam, which are used to adjust the position of the cross beam together with the radio magnet.

[0008] Preferably, the ground base is a box structure with an open top, the upper surface of the ground base is flush with the ground when the barrier door is closed, and the upper surface of the barrier door is provided with anti-slip texture to provide friction and prevent slippage when a vehicle passes over it. An outer edge stop is fixedly connected between each of the multiple barrier doors. When the barrier door is in the closed state, the outer edge stop covers the gap between adjacent barrier doors to prevent foreign objects from entering the ground base through the gap.

[0009] Preferably, there are two hydraulic push rods, and two hinge seats are fixedly installed at the bottom of the ground base, with the two hinge seats respectively hinged to the bottom of the two hydraulic push rods.

[0010] Preferably, a plurality of first pneumatic cylinders are fixedly connected to the outer wall of the power base. Each of the output ends of the plurality of first pneumatic cylinders is provided with a first linkage pneumatic rod. The output ends of the plurality of first linkage pneumatic rods are fixedly connected to a vertical push rod. The plurality of vertical push rods correspond one-to-one with the plurality of barrier doors, and the top of the vertical push rod is connected to the bottom of the barrier door. The first pneumatic cylinder drives the first linkage pneumatic rod to extend and retract, thereby driving the vertical push rod to move, thereby controlling the opening and closing of the barrier door.

[0011] Preferably, the output ends of the second pneumatic cylinder and the third pneumatic cylinder are respectively provided with a second linkage pneumatic rod and a third linkage pneumatic rod, and both the second linkage pneumatic rod and the third linkage pneumatic rod are connected to the cross beam.

[0012] Preferably, two air pumps are also fixedly installed at the bottom of the ground base. Each of the two air pumps has multiple air outlets at its upper end. The air pumps provide compressed air power to each air cylinder through the air outlets.

[0013] Preferably, one of the air pumps has two air outlets, and the two air outlets are respectively connected to the second air cylinder and the third air cylinder, for independently controlling the extension and retraction of the second linkage air rod and the third linkage air rod; The first pneumatic cylinder and the barrier door are both provided in four parts. The other air pump has four air outlets, which are respectively connected to the four first pneumatic cylinders to synchronously control the extension and retraction of the four first linkage pneumatic rods, thereby realizing the synchronous opening and closing of the four barrier doors.

[0014] Preferably, the cross beam has a cross-shaped structure, the second linkage pneumatic rod is hinged to one end of the cross beam, the third linkage pneumatic rod is hinged to the other end of the cross beam, and the second pneumatic cylinder and the third pneumatic cylinder are arranged at an angle, so that the translation and / or rotation adjustment of the cross beam in the horizontal plane can be realized through their linkage.

[0015] Preferably, the power supply base and the stabilizing base have a pluggable mating structure. The upper end of the stabilizing base has a positioning groove that matches the shape of the power supply base. The power supply base is embedded in the positioning groove to achieve quick installation and removal of the wireless magnet.

[0016] Preferably, it also includes a controller, which is electrically connected to the air pump, the hydraulic push rod, the first pneumatic cylinder, the second pneumatic cylinder and the third pneumatic cylinder respectively, and is used to control the lifting and lowering movement of the radio electromagnetic, the horizontal position adjustment and the opening and closing movement of the barrier door.

[0017] Compared with the prior art, the beneficial effects of the present invention are: (1) This electric vehicle wireless charging module is equipped with an openable and closable barrier door and an outer edge stop. When not charging, the barrier door remains closed, completely sealing the interior of the ground base. The transmitting coil is hidden inside the sealed cavity, preventing metal foreign objects, small animals, fallen leaves, etc., from entering the charging area. This fundamentally avoids the safety risk of overheating or even burning due to foreign objects entering the magnetic field area, eliminating the hidden danger of traditional wireless charging modules easily igniting dry fallen leaves or scalding animals. Furthermore, mud, snow, sand, etc., cannot cover the surface of the transmitting coil. During charging, the coil rises and the barrier door opens, ensuring that the magnetic field transmission efficiency is not interfered with by external contaminants. At the same time, when in standby mode, the wireless magnet is completely retracted into the ground base, and the barrier door is flush with the ground and bears the weight. When a vehicle drives by or parks normally, it will not run over the transmitting coil, significantly extending the module's service life and reducing damage and maintenance costs caused by running over it. Therefore, this wireless charging module can work stably in harsh weather conditions such as rain, snow, and sandstorms, as well as in complex parking environments, effectively improving the environmental adaptability and safety of the wireless charging module.

[0018] (2) The electric vehicle wireless charging module is equipped with a second pneumatic cylinder, a third pneumatic cylinder and their linkage rod, and a cross beam and a stabilizing seat. After the wireless magnet is raised, the transmitting coil can be slightly translated or rotated in the horizontal direction to actively compensate for the position deviation when the vehicle is parked, and ensure precise alignment with the receiving plate under the vehicle. This reduces the difficulty for the driver to park accurately. At the same time, the wireless magnet is raised above the ground when charging and exposed to the air, forming good natural convection heat dissipation conditions. Compared with the fixed transmitting plate that is completely buried underground, the heat dissipation effect is greatly improved, thereby supporting higher power long-term charging and avoiding efficiency reduction or device aging caused by excessive temperature rise. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the wireless charging module for electric vehicles of the present invention; Figure 2 This is a cross-sectional view of the ground base structure of the wireless charging module for electric vehicles of the present invention. Figure 3 This is a schematic diagram of the internal structure of the ground base of the electric vehicle wireless charging module barrier door when it is unfolded. Figure 4 This is a top view of the barrier structure of the electric vehicle wireless charging module of the present invention when the barrier door is unfolded.

[0020] In the diagram: 1. Ground base; 2. Outer edge barrier; 3. Barrier door; 4. Radio magnet; 5. Power supply base; 6. First pneumatic cylinder; 7. First linkage pneumatic rod; 8. Vertical push rod; 9. Second pneumatic cylinder; 10. Second linkage pneumatic rod; 11. Third pneumatic cylinder; 12. Third linkage pneumatic rod; 13. Hydraulic push rod; 14. Cross beam; 15. Stabilizing seat; 16. Air pump; 17. Air outlet; 18. Hinge seat. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 1-4The present invention provides a technical solution: a wireless charging module for electric vehicles, including a ground base 1 and a wireless magnet 4. The wireless magnet 4 is located inside the ground base 1. The top of the ground base 1 is movably provided with multiple openable and closable barrier doors 3 for protecting the wireless magnet 4. The bottom of the wireless magnet 4 is fixedly connected to a power supply base 5. The upper surface of the power supply base 5 is fixedly connected to the wireless magnet 4 by screws or welding. The power supply base 5 is provided with power distribution lines and control signal lines inside for providing power and communication control to the wireless magnet 4. Specifically, the ground base 1 is a box structure with an open top, which can be made of high-strength metal materials, such as stainless steel or high-strength structural steel, by welding or casting. It has sufficient structural strength and rigidity to withstand the static and dynamic loads when vehicles run over it. The ground base 1 is buried in a pre-reserved pit in the ground. The upper surface of the ground base 1 is flush with the ground when the barrier door 3 is closed. The edge of the barrier door 3 rests on the upper end of the ground base 1. The barrier door 3 is made of high-strength load-bearing plate to ensure structural stability when bearing the weight of vehicles. The upper surface of the barrier door 3 is provided with anti-slip textures, such as diamond embossing or strip anti-slip grooves, to provide friction when vehicles drive over it. The system provides friction and prevents slippage. Multiple barrier doors 3 are fixedly connected with outer edge blocks 2. When the barrier doors 3 are closed, the outer edge blocks 2 cover the gaps between adjacent barrier doors 3 to prevent external foreign objects from entering the ground base 1 through the gaps. The outer edge blocks 2 are flexible or rigid sealing strip structures. When the barrier doors 3 are closed, the outer edge blocks 2 precisely cover the gaps between adjacent barrier doors 3, forming a complete sealing surface. This sealing structure effectively prevents rainwater, sand, metal foreign objects, fallen leaves, and small animals from entering the ground base 1 through the gaps, ensuring the cleanliness and safety of the internal electrical components and radio magnet 4 in standby mode.

[0023] Furthermore, a plurality of first pneumatic cylinders 6 are fixedly connected to the outer wall of the power supply base 5. Each of the output ends of the plurality of first pneumatic cylinders 6 is provided with a first linkage pneumatic rod 7. The output ends of the plurality of first linkage pneumatic rods 7 are fixedly connected to a vertical push rod 8. The plurality of vertical push rods 8 correspond one-to-one with the plurality of barrier doors 3, and the top of the vertical push rod 8 is connected to the bottom of the barrier door 3. The first pneumatic cylinder 6 drives the first linkage pneumatic rod 7 to extend and retract, thereby driving the vertical push rod 8 to move, thereby controlling the opening and closing of the barrier door 3. In this embodiment, there are four first pneumatic cylinders 6 and four barrier doors 3. The four first pneumatic cylinders 6 are respectively fixedly installed on the four side walls of the power supply base 5. The first pneumatic cylinder 6 is a small single-acting pneumatic cylinder, and its cylinder body is fixedly connected to the power supply base 5 through a mounting bracket. When the first pneumatic cylinder 6 works, it can drive the first linkage pneumatic rod 7 to extend and retract, thereby pushing the vertical push rod 8 to move outward or inward. When the vertical push rod 8 moves, it simultaneously drives the barrier door 3 to open or close.

[0024] The ground base 1 is equipped with multiple hydraulic push rods 13 for raising and lowering the radio magnet 4. The extended ends of the multiple hydraulic push rods 13 are hinged to the bottom of the radio magnet 4, and a cross beam 14 is connected between the multiple hydraulic push rods 13. The upper ends of the piston rods of the hydraulic push rods 13 are connected to the cross beam 14. A stabilizing seat 15 for placing the power supply seat 5 is installed on the upper end of the cross beam 14. When the hydraulic push rods 13 drive their piston rods to move up and down, this structure can drive the radio magnet 4 to move up and down, so that the radio magnet 4 can extend into the ground base 1 for charging or be retracted into the ground base 1, and move up and down together with the cross beam 14, the power supply seat 5 and the stabilizing seat 15. Furthermore, the power socket 5 and the stabilizing base 15 are connected by a pluggable structure. The upper end of the stabilizing base 15 is provided with a positioning groove that matches the shape of the power socket 5. The power socket 5 is embedded in the positioning groove to realize the quick installation and removal of the radio magnet 4. The side wall of the positioning groove can be provided with an elastic buckle or locking mechanism. When the power socket 5 is inserted, it can be quickly locked. When it needs to be removed, simply release the lock and pull the power socket 5 together with the radio magnet 4 upwards. This allows the radio magnet 4 and the power socket 5 to be installed and removed as independent components, which greatly facilitates daily maintenance, repair and replacement. In this embodiment, there are two hydraulic push rods 13, and two hinge seats 18 are fixedly installed at the bottom of the ground base 1. The two hinge seats 18 are respectively hinged to the bottom of the two hydraulic push rods 13. The two hinge seats 18 are respectively located on both sides of the bottom surface inside the ground base 1. The hinge seat 18 is a U-shaped support structure with coaxial hinge holes on its two side walls. The hydraulic push rod 13 is a multi-stage telescopic hydraulic cylinder. The bottom of its cylinder body is pivotally connected to the hinge seat 18 through a hinge shaft, so that the hydraulic push rod 13 can swing slightly around the hinge shaft according to the position change of the cross beam 14 during operation, avoiding rigid interference.

[0025] The inner wall of the ground base 1 is hinged with a second pneumatic cylinder 9 and a third pneumatic cylinder 11. The output ends of the second pneumatic cylinder 9 and the third pneumatic cylinder 11 are respectively connected to different positions of the cross beam 14 for adjusting the position of the cross beam 14 together with the radio magnet 4.

[0026] Specifically, the output ends of the second pneumatic cylinder 9 and the third pneumatic cylinder 11 are respectively provided with a second linkage pneumatic rod 10 and a third linkage pneumatic rod 12, both of which are connected to the cross beam 14. The cross beam 14 has a cross-shaped structure, consisting of two mutually perpendicular crossbeams. The second linkage pneumatic rod 10 is hinged to one end of the cross beam 14, and the third linkage pneumatic rod 12 is hinged to the other end of the cross beam 14. The second pneumatic cylinder 9 and the third pneumatic cylinder 11 are arranged at an angle, and their linkage enables translational and / or rotational adjustment of the cross beam 14 in the horizontal plane. Both the second pneumatic cylinder 9 and the third pneumatic cylinder 11 are single-acting or double-acting pneumatic cylinders, driven by compressed air to move their internal pistons, thereby pushing the second linkage pneumatic rod 10 and the third linkage pneumatic rod 12 to extend or retract. The hinge positions of the second pneumatic cylinder 9 and the third pneumatic cylinder 11 on the inner wall of the ground base 1 are arranged at a certain angle, making the second pneumatic cylinder 9... The extension and retraction directions of the second-linkage pneumatic rod 10 and the third-linkage pneumatic rod 12 intersect each other in the horizontal plane. When the second-linkage pneumatic rod 10 and the third-linkage pneumatic rod 12 move with different extension lengths, they work together on the cross beam 14. Since the cross beam 14 and the hydraulic push rod 13 are hinged, and the bottom end of the hydraulic push rod 13 is hinged to the hinge seat 18, the cross beam 14 can achieve three degrees of freedom of fine adjustment in the horizontal plane: translation in the X direction, translation in the Y direction, and small-angle rotation around the vertical axis. The stabilizing seat 15 is fixedly installed on the upper end of the cross beam 14, and the power supply seat 5 is connected in the stabilizing seat 15. Therefore, the horizontal position of the radio magnet 4 is adjusted synchronously with the movement of the cross beam 14. By precisely controlling the air supply volume and air supply direction of the second pneumatic cylinder 9 and the third pneumatic cylinder 11, the horizontal position of the radio magnet 4 can be precisely adjusted within a small range, thereby ensuring that the radio magnet 4 can be aligned with the receiving plate at the bottom of the vehicle. This effectively solves the problem of parking deviation causing charging failure or low efficiency in the prior art.

[0027] Furthermore, two air pumps 16 are fixedly installed at the bottom of the ground base 1. These air pumps 16 can be miniature electric air compressors, used to compress and store external air or directly output it to each air cylinder. Each of the two air pumps 16 has multiple air outlet ports 17 at its upper end. These outlet ports 17 are standard quick connectors or threaded connectors used to connect to air pressure pipelines. The air pumps 16 provide compressed air power to each air cylinder through the air outlet ports 17. One air pump 16 has two air outlet ports 17, which are respectively connected to the second air cylinder 9 and the third air cylinder 11, used to independently control the extension and retraction of the second linkage air rod 10 and the third linkage air rod 12. Since the second air cylinder 9 and the third air cylinder 1... 1. Since independent control is required to achieve different extension / retraction amounts, the two air outlet ports 17 of the air pump 16 can be connected to independent electronically controlled proportional valves or solenoid directional valves to achieve independent and precise adjustment of the air intake of the second pneumatic cylinder 9 and the third pneumatic cylinder 11. The other air pump 16 has four air outlet ports 17, which are respectively connected to the four first pneumatic cylinders 6 to synchronously control the extension / retraction of the four first linkage pneumatic rods 7, achieving synchronous opening and closing of the four barrier doors 3. Because the four first pneumatic cylinders 6 need to operate synchronously, the four air outlet ports 17 of the air pump 16 can be connected to the output end of the same solenoid valve through a manifold or diverter valve to achieve simultaneous air intake and exhaust of the four first pneumatic cylinders 6, ensuring synchronous opening and closing of the barrier doors 3. Both air pumps 16 have air filters at their air inlets to prevent dust and moisture from entering the pneumatic system, ensuring reliable operation of the pneumatic components.

[0028] In this embodiment, a controller is also included. The controller is electrically connected to the air pump 16, the hydraulic push rod 13, the first pneumatic cylinder 6, the second pneumatic cylinder 9, and the third pneumatic cylinder 11, respectively, and is used to control the lifting and lowering action of the radio magnet 4, the horizontal position adjustment, and the opening and closing action of the barrier door 3.

[0029] Working principle: When the electric vehicle is not in the charging position or does not need to be charged, the wireless charging module of the electric vehicle is in standby mode. The barrier door 3 is in the horizontal closed position, covering the top of the ground base 1 and forming a seal with the outer edge 2. The hydraulic push rod 13 is in the retracted state. The cross beam 14 is in the low position. The stabilizing seat 15, the power seat 5 and the wireless magnet 4 are completely retracted into the base. All pneumatic cylinders are not activated. The air pump 16 is in standby mode. The wireless magnet 4 is not exposed to the outside to avoid being crushed or contaminated by mud, water or metal foreign objects.

[0030] Once the electric vehicle is parked at the charging station, the air pump 16 starts. One of the air pumps 16 simultaneously supplies air to the four first air cylinders 6 through four air outlets 17. Compressed air enters the cylinder body of the first air cylinder 6, pushing the piston to move and causing the first linkage air rod 7 to extend outward. The extension of the first linkage air rod 7 pushes the vertical push rod 8 outward, thereby causing the barrier door 3 to open outward, making the top opening of the ground base 1 completely open. At the same time, the hydraulic push rod 13 pushes upward from the hinge seat 18, causing the radio magnet 4 to rise synchronously. The radio magnet 4 rises from the ground base 1 out of the ground and approaches the receiver plate under the vehicle. After the electromagnet 4 rises above the ground, it supplies air to the second pneumatic cylinder 9 and the third pneumatic cylinder 11 through two air outlets 17 via another air pump 16. The second linkage pneumatic rod 10 and the third linkage pneumatic rod 12 extend and retract respectively, and together they push the cross beam 14 to make a small translation or rotation in the horizontal plane. The movement of the cross beam 14 drives the stabilizing seat 15, the power supply seat 5 and the radio magnet 4 to move synchronously. Therefore, the horizontal position of the radio magnet 4 is adjusted until it is aligned with the receiving plate at the bottom of the vehicle. At this time, all pneumatic cylinders and hydraulic push rods 13 remain locked to ensure that the position of the radio magnet 4 remains stable during the charging process.

[0031] During charging, the wireless magnet 4 is energized, generating an alternating magnetic field to wirelessly charge the vehicle. During the charging process, since the wireless magnet 4 is raised above the ground, its surroundings are fully exposed to the ambient air, creating good natural convection heat dissipation conditions. After charging is completed, the power supply to the wireless magnet 4 is stopped, the hydraulic push rod 13 retracts, driving the wireless magnet 4 back into the ground base 1. The second pneumatic cylinder 9 and the third pneumatic cylinder 11 reset, driving the wireless magnet 4 back to its initial position. The first pneumatic cylinder 6 retracts, the first linkage pneumatic rod 7 retracts, driving the vertical push rod 8 to retract the barrier door 3, causing it to close again. The outer edge stop 2 re-forms a seal, the air pump 16 stops running, and the module returns to standby mode.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wireless charging module for electric vehicles, comprising a ground base (1) and a wireless magnet (4), wherein the wireless magnet (4) is located inside the ground base (1), characterized in that: The top of the ground base (1) is provided with multiple openable and closable barrier doors (3) for protecting the radio magnet (4), and the bottom of the radio magnet (4) is fixedly connected to a power supply base (5). The ground base (1) is provided with a plurality of hydraulic push rods (13) for raising and lowering the radio magnet (4). The protruding ends of the plurality of hydraulic push rods (13) are hinged to the bottom of the radio magnet (4), and a cross beam (14) is connected between the plurality of hydraulic push rods (13). A stabilizing seat (15) for placing the power supply base (5) is installed at the upper end of the cross beam (14). The inner wall of the ground base (1) is hinged with a second pneumatic cylinder (9) and a third pneumatic cylinder (11). The output ends of the second pneumatic cylinder (9) and the third pneumatic cylinder (11) are respectively connected to different positions of the cross beam (14) to adjust the position of the cross beam (14) together with the radio magnet (4).

2. The wireless charging module for electric vehicles according to claim 1, characterized in that: The ground base (1) is a box structure with an open top. The upper surface of the ground base (1) is flush with the ground when the barrier door (3) is closed. The upper surface of the barrier door (3) is provided with anti-slip texture to provide friction and prevent slippage when a vehicle passes by. An outer edge stop (2) is fixedly connected between each of the multiple barrier doors (3). When the barrier door (3) is in the closed state, the outer edge stop (2) covers the gap between adjacent barrier doors (3) to prevent foreign objects from entering the ground base (1) through the gap.

3. The wireless charging module for electric vehicles according to claim 1, characterized in that: Two hydraulic push rods (13) are provided, and two hinge seats (18) are fixedly installed at the bottom of the ground base (1). The two hinge seats (18) are respectively hinged to the bottom of the two hydraulic push rods (13).

4. The wireless charging module for electric vehicles according to claim 3, characterized in that: Multiple first pneumatic cylinders (6) are fixedly connected to the outer wall of the power base (5). Each of the output ends of the multiple first pneumatic cylinders (6) is provided with a first linkage pneumatic rod (7). Each of the output ends of the multiple first linkage pneumatic rods (7) is fixedly connected with a vertical push rod (8). Each of the multiple vertical push rods (8) corresponds to one of the multiple barrier doors (3), and the top of the vertical push rod (8) is connected to the bottom of the barrier door (3). The first pneumatic cylinder (6) drives the first linkage pneumatic rod (7) to extend and retract, thereby driving the vertical push rod (8) to move, thereby controlling the opening and closing of the barrier door (3).

5. The wireless charging module for electric vehicles according to claim 4, characterized in that: The output ends of the second pneumatic cylinder (9) and the third pneumatic cylinder (11) are respectively provided with a second linkage pneumatic rod (10) and a third linkage pneumatic rod (12), and the second linkage pneumatic rod (10) and the third linkage pneumatic rod (12) are both connected to the cross beam (14).

6. The wireless charging module for electric vehicles according to claim 5, characterized in that: Two air pumps (16) are also fixedly installed at the bottom of the ground base (1). The upper ends of the two air pumps (16) are provided with multiple air outlets (17). The air pumps (16) provide compressed air power to each air cylinder through the air outlets (17).

7. The wireless charging module for electric vehicles according to claim 6, characterized in that: One of the air pumps (16) has two air outlets (17), and the two air outlets (17) are respectively connected to the second air cylinder (9) and the third air cylinder (11) for independently controlling the extension and retraction of the second linkage air rod (10) and the third linkage air rod (12); The first pneumatic cylinder (6) and the barrier door (3) are both set to four. The other air pump (16) has four air outlets (17). The four air outlets (17) are respectively connected to the four first pneumatic cylinders (6) to synchronously control the extension and retraction of the four first linkage pneumatic rods (7) to realize the synchronous opening and closing of the four barrier doors (3).

8. The wireless charging module for electric vehicles according to claim 5, characterized in that: The cross beam (14) has a cross-shaped structure. The second linkage pneumatic rod (10) is hinged to one end of the cross beam (14), and the third linkage pneumatic rod (12) is hinged to the other end of the cross beam (14). The second pneumatic cylinder (9) and the third pneumatic cylinder (11) are arranged at an angle. The two linkages enable the translation and / or rotation adjustment of the cross beam (14) in the horizontal plane.

9. The wireless charging module for electric vehicles according to claim 1, characterized in that: The power socket (5) and the stabilizing base (15) are pluggable. The upper end of the stabilizing base (15) is provided with a positioning groove that matches the shape of the power socket (5). The power socket (5) is embedded in the positioning groove to realize the quick installation and removal of the radio magnet (4).

10. The wireless charging module for electric vehicles according to claim 7, characterized in that: It also includes a controller, which is electrically connected to the air pump (16), the hydraulic push rod (13), the first pneumatic cylinder (6), the second pneumatic cylinder (9) and the third pneumatic cylinder (11) respectively, and is used to control the lifting and lowering action of the radio magnet (4), the horizontal position adjustment and the opening and closing action of the barrier door (3).

Images