A safe wireless charging pile and a safe operation method

Abstract

The application relates to the field of wireless charging, in particular to a safe wireless charging pile and a safe operation method. The safe wireless charging pile comprises a body, a transmitting module, a circumferential protection mechanism, a temperature detection and cooling mechanism and a position adjusting mechanism; the circumferential protection mechanism comprises symmetrically arranged folding protection assemblies and symmetrically arranged lifting protection assemblies, and the two groups of folding protection assemblies and the two groups of lifting protection assemblies are arranged at four edges of the transmitting module. The safe operation method based on the safe wireless charging pile is also disclosed. The safe wireless charging pile and the safe operation method are used, the circumferential protection mechanism is used for active protection, foreign matters or living bodies are prevented from entering the charging area, the safety is improved, and the risk of fire is reduced. The temperature detection and cooling mechanism is arranged, and the temperature detection precision is improved.

Description

Technical Field

[0001] This invention relates to the field of wireless charging, and more particularly to a safe wireless charging station and a safe operation method thereon. Background Technology

[0002] Wireless power transfer technology relies on spatial electromagnetic field coupling to achieve contactless power transfer. Compared to traditional plug-in charging, it offers advantages such as no physical connection required, convenient operation, no electrical sparks, and stable operation in complex industrial environments, including flammable and explosive environments. It has become a core charging solution in fields such as new energy vehicles, smart warehousing, and autonomous driving. With the continuous growth in the number of new energy vehicles, ground-based wireless charging piles, featuring automated docking, unattended operation, and compatibility with multiple vehicle models, are widely used in public charging scenarios such as parking lots, residential areas, and supermarkets, effectively improving charging convenience and safety.

[0003] However, existing wireless charging stations still have significant safety flaws and technical shortcomings in practical applications. During vehicle parking or charging, children, pets, and other living beings can easily enter the high-frequency electromagnetic coupling area between the transmitting and receiving coils. This not only interferes with the magnetic field distribution and reduces charging efficiency but may also cause localized overheating due to eddy current effects, leading to burns, electric shocks, and other safety accidents. Simultaneously, foreign objects such as metal debris, gravel, and fallen leaves can easily fall into the charging area and rapidly heat up under the influence of strong electromagnetic fields, posing a risk of burning out the equipment and igniting nearby flammable materials. Traditional charging stations mostly use fixed-point contact temperature measurement, which can only monitor local temperatures and cannot achieve full-area, real-time, and accurate temperature measurement of the transmitting module. Non-contact temperature measurement is susceptible to interference from detection distance, angle, and environmental radiation, leading to distorted temperature data and making it difficult to detect overheating hazards in a timely manner. Summary of the Invention

[0004] The purpose of this invention is to provide a safe wireless charging station and a safe operation method to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention provides a safe wireless charging pile, including a main body and at least one transmitting module. The transmitting module is electrically connected to the main body. An electrical safety protection module is provided inside the main body. The transmitting module is used to perform wireless charging when it is opposite to a receiving module on the bottom of a car. It also includes a circumferential protection mechanism, a temperature detection and cooling mechanism, and a position adjustment mechanism. The circumferential protection mechanism includes symmetrically arranged folding protection components and symmetrically arranged lifting protection components. The two sets of folding protection components and the two sets of lifting protection components are respectively arranged on the four sides of the launch module. The temperature detection and cooling mechanism includes a temperature detection component and an air cooling component; The position adjustment mechanism is located at the bottom of the launch module.

[0006] Preferably, the folding protective assembly includes a rotating shaft rotatably mounted on the side of the launch module, the rotating shaft is connected to a rotating drive motor, a fixed tube is provided on the rotating shaft, a telescopic tube is provided inside the fixed tube through a lifting module, a connecting plate is connected to the top of the telescopic tube, several pressure sensors are provided on the top of the connecting plate, and a protective net is provided between the connecting plate and the rotating shaft. The lifting module, rotary drive motor, and pressure sensor are all electrically connected to the main body.

[0007] Preferably, the lifting protection component includes a limiting guide plate fixed on the launching module. The limiting guide plate has two guide holes, and a lifting rack is slidably arranged in each of the two guide holes. The tops of the two lifting racks are connected to the lifting plate. A pressure sensor is provided on the lifting plate, and a protective net is provided between the lifting plate and the guide limiting plate. One of the limit guide plates is equipped with a lifting drive motor. The output shaft of the lifting drive motor is connected to a drive shaft. The drive shaft is equipped with a first drive gear, a first transmission gear, and a second drive gear in sequence. The first drive gear and the second drive gear mesh with two lifting gears that are opposite to each other in the two lifting protection components. The first transmission gear is connected to the second transmission gear on the driven drive shaft via a belt. The driven drive shaft is also equipped with a first driven gear and a second driven gear. The first driven gear and the second driven gear mesh with two other lifting gears that are opposite to each other in the two lifting protection components. The lifting drive motor is electrically connected to the main body.

[0008] Preferably, the position adjustment mechanism includes four adjusting lifters, the lifting ends of which are rotatably connected to the bottom of the launch module for adjusting the height and tilt angle of the launch module. Four distance sensors are provided on the top of the launch module. The lifting device and distance sensor are both electrically connected to the main body.

[0009] Preferably, the temperature detection component includes a fixed temperature sensor and a non-contact temperature sensor. The non-contact temperature sensor is mounted on the lifting plate via a moving module. An angle adjustment gimbal is provided on the moving block of the moving module, and the non-contact temperature sensor is mounted on the angle adjustment gimbal.

[0010] Preferably, the air cooling assembly includes several air outlet pipes, which are arranged on one side and the side of the launch module. The air outlet pipes on the side are inclined and connected to the air outlet of the cooling fan. The cooling fan is electrically connected to the main body, and a dust collection groove is provided on the launch module.

[0011] Preferably, the electrical safety protection module includes an overvoltage circuit, an overcurrent circuit, an overload circuit, an overtemperature protection circuit, and a leakage current protection circuit.

[0012] Based on the above-mentioned safe operation method for a wireless charging station, the specific steps are as follows: Step S1: After the car is parked, the user sets the charging parameters through the interactive interface of the mobile terminal or the main unit; the charging parameters include the start time, charging time and target power. The main unit obtains the location information of the receiving module and the battery status information, and completes the pre-charging handshake confirmation. Step S2: Unfold the folding protective components, adjust the height and angle of the transmitting module according to the position information through the position adjustment mechanism, and at the same time, the lifting module and lifting plate are raised to form a physical protection area around the transmitting module to prevent living people or foreign objects from entering the wireless charging area. Step S3: The main body charges according to the charging parameters, and at the same time, the temperature of the charging area is detected by a fixed temperature sensor and a non-contact temperature sensor. When the temperature exceeds the first set value, the temperature is cooled by the air cooling component. When the temperature exceeds the second set value, charging stops. When the temperature returns to the third set value, charging starts again. When overvoltage, overcurrent, overload, or leakage occurs, the main unit immediately cuts off the output.

[0013] Preferably, the deployment process of the circumferential protective mechanism is as follows: After the lifting module is activated to retract the telescopic tube into the fixed tube, the rotary drive motor is activated to drive the rotating shaft to rotate, so that the fixed tube changes from a horizontal state to a vertical state. The lifting module is then activated to raise the telescopic tube, causing the connecting plate to extend upward. At the same time, the lifting drive motor drives the lifting plate to rise until the pressure value of the pressure sensor reaches the set value.

[0014] Preferably, the non-contact temperature sensor detects the temperature of the charging area as follows: Set the initial angle and angle adjustment interval, and calculate the distance between the non-contact temperature sensor and the detection point based on the initial angle and angle adjustment interval. The calculation formula is as follows: ; in, The distance between the non-contact temperature sensor and the detection point. This refers to the distance between the non-contact temperature sensor and the top of the transmitting module. For angle adjustment intervals, The number of angle adjustments; The temperature at the detection point is corrected based on the distance between the non-contact temperature sensor and the detection point. The calculation formula is as follows: in, The corrected temperature at the detection point. The temperature at the detection point is the uncorrected value. , as well as These are the first fitting coefficient, the second fitting coefficient, and the third fitting coefficient, respectively. Combined with the longitudinal position of the moving module, the full-range temperature scanning and temperature detection of the transmitting module is achieved.

[0015] Therefore, the present invention, employing the above-mentioned safe wireless charging pile and safe operation method, has the following beneficial effects: (1) Active protection is provided by a circumferential protection mechanism to prevent debris or living objects from entering the charging area, thereby improving safety and reducing the risk of fire.

[0016] (2) At the same time, a temperature detection and cooling mechanism is set up. In addition to the traditional fixed-point contact temperature measurement, a scanning non-contact temperature detection is also adopted to realize full-area, real-time and accurate temperature measurement of the transmitting module. At the same time, corrections are made to avoid the interference of detection distance, angle and environmental radiation that are easily affected by non-contact temperature measurement, thereby improving the accuracy of temperature detection.

[0017] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the circumferential protection mechanism of the present invention; Figure 2 This is a schematic diagram of the driving structure of the lifting and protective component of the present invention; Figure 3 Top view of the launch module; Figure 4 This is a schematic diagram of a non-contact temperature sensor for temperature detection.

[0019] Figure Labels 1. Folding protective assembly; 11. Rotating shaft; 12. Rotary drive motor; 13. Fixed tube; 14. Telescopic tube; 15. Connecting plate; 2. Lifting protective assembly; 21. Limiting guide plate; 22. Lifting rack; 23. Lifting plate; 24. Lifting drive motor; 25. Active drive shaft; 26. First active drive gear; 27. First transmission gear; 28. Second active drive gear; 29. ​​Driven drive shaft; 210. Second transmission gear; 211. First driven drive gear; 212. Second driven drive gear; 3. Temperature detection and cooling mechanism; 31. Temperature detection assembly; 311. Moving module; 312. Angle adjustment gimbal; 313. Non-contact temperature sensor; 32. Air outlet pipe; 4. Adjustable lifting device; 5. Launching module; 51. Dust collection tank. Detailed Implementation

[0020] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0022] like Figure 1 As shown, a safe wireless charging pile includes a main body and at least one transmitting module 5. The number of transmitting modules 5 is set according to the actual power of the main body and the size of the parking lot. The transmitting modules 5 are electrically connected to the main body and are used for wireless charging when they are opposite to the receiving module on the bottom of the car. An electrical safety protection module is set in the main body. The electrical safety protection module includes an overvoltage circuit, an overcurrent circuit, an overload circuit, an overtemperature protection circuit, and a leakage protection circuit to ensure safe operation during charging.

[0023] To prevent foreign objects or living beings from entering the charging area, a circumferential protection mechanism is also provided. This mechanism includes symmetrically arranged folding protection components 1 and symmetrically arranged lifting protection components 2. The two sets of folding protection components 1 and the two sets of lifting protection components 2 are respectively located on the four sides of the transmitting module 5. Figure 1 As shown, the folding protective assembly 1 includes a rotating shaft 11 rotatably mounted on the side of the transmitting module 5. The rotating shaft 11 is connected to a rotating drive motor 12. A fixed tube 13 is installed on the rotating shaft 11. A telescopic tube 14 is installed inside the fixed tube 13 via a lifting module. A connecting plate 15 is connected to the top of the telescopic tube 14. Several pressure sensors are installed on the top of the connecting plate 15. A protective net is installed between the connecting plate 15 and the rotating shaft 11. The lifting module, the rotating drive motor 12, and the pressure sensors are all electrically connected to the main body. When not charging, it is in a folded state, protecting the area corresponding to the coil on the upper surface of the transmitting module 5. When charging is required, when unfolded, debris or living objects on the protective net fall to the outside of the transmitting module 5, simultaneously protecting the charging area.

[0024] The lifting and protective assembly 2 includes a limiting guide plate 21 fixed to the launching module 5. The limiting guide plate 21 has two guide holes, and a lifting rack 22 is slidably disposed within each of the two guide holes. The tops of the two lifting racks 22 are connected to a lifting plate 23. A pressure sensor is disposed on the lifting plate 23. A protective net is disposed between the lifting plate 23 and the limiting guide plate. A lifting drive motor 24 is disposed on one of the limiting guide plates 21. Figure 2 As shown, the output shaft of the lifting drive motor 24 is connected to the active drive shaft 25. The active drive shaft 25 is sequentially equipped with a first active drive gear 26, a first transmission gear 27, and a second active drive gear 28. The first active drive gear 26 and the second active drive gear 28 respectively mesh with two lifting gears opposite to each other in the two lifting protection components 2. The first transmission gear 27 is connected to the second transmission gear 210 on the driven drive shaft 29 via a belt. The driven drive shaft 29 is also equipped with a first driven drive gear 211 and a second driven drive gear 212, which respectively mesh with two other lifting gears opposite to each other in the two lifting protection components 2. The lifting drive motor 24 is electrically connected to the main body. This enables the simultaneous lifting of the two protective nets and the lifting plate 23.

[0025] To achieve temperature detection and cooling of the charging area, a temperature detection and cooling mechanism 3 is provided. The temperature detection and cooling mechanism 3 includes a temperature detection component 31 and a wind cooling component. The temperature detection component 31 includes a fixed temperature sensor and a non-contact temperature sensor 313. The fixed temperature sensor is arranged according to the actual situation and can be set in the center, edge and internal heat sink of the transmitter module 5. The non-contact temperature sensor 313 is installed on the lifting plate 23 through the moving module. An angle adjustment gimbal 312 is set on the moving block of the moving module 311. The non-contact temperature sensor 313 is installed on the angle adjustment gimbal 312 to realize all-round scanning temperature detection of the transmitter module 5.

[0026] The air-cooled assembly includes several air outlet pipes 32, such as Figure 3 As shown, the exhaust pipe 32 is located on one side and the side of the launching module 5. The exhaust pipe 32 on the side is inclined and connected to the exhaust port of the cooling fan. The cooling fan is electrically connected to the main body. The launching module 5 has a dust collection tank 51. It not only serves a cooling function, but also blows dust or small particles of debris from the surface into the dust collection tank 51, thus achieving a cleaning function.

[0027] To accommodate receiver modules of varying heights, a position adjustment mechanism is installed at the bottom of the transmitter module 5. This mechanism includes four adjusting lifters 4, whose lifting ends are rotatably connected to the bottom of the transmitter module 5. These lifters are used to adjust the height and tilt angle of the transmitter module 5. Four distance sensors are located at the top of the transmitter module 5. Both the adjusting lifters 4 and the distance sensors are electrically connected to the main body. For receiver modules with different tilt angles (due to varying tire pressures, foreign objects in the four tires, or tire blowouts causing vehicle tilt), the lifting height of the four adjusting lifters 4 is adjusted based on data detected by the four distance sensors. This prevents low charging efficiency due to vehicle tilt or charging interruption due to a large tilt angle.

[0028] Based on the above-mentioned safe operation method for a wireless charging station, the specific steps are as follows: Step S1: After the car is parked (automatic parking can be used to improve docking accuracy), the user sets the charging parameters through the mobile terminal or the main unit's interactive interface; the charging parameters include start time, charging time and target power. The main unit obtains the location information of the receiving module and the battery status information to complete the pre-charging handshake confirmation.

[0029] Step S2: The folding protective component 1 unfolds, and the height and angle of the transmitting module 5 are adjusted according to the position information via the position adjustment mechanism. Simultaneously, the lifting module and lifting plate 23 rise, forming a physical protection zone around the transmitting module 5 to prevent living beings or foreign objects from entering the wireless charging area. The unfolding process of the circumferential protection mechanism is as follows: After the lifting module is activated and the telescopic tube 14 is retracted into the fixed tube 13, the rotary drive motor 12 is activated to drive the rotary shaft 11 to rotate, so that the fixed tube 13 changes from a horizontal state to a vertical state. The lifting module is then activated to raise the telescopic tube 14, so that the connecting plate 15 extends upward. At the same time, the lifting drive motor 24 drives the lifting plate 23 to rise until the pressure value of the pressure sensor reaches the set value.

[0030] Step S3: The main body charges according to the charging parameters, and at the same time, the temperature of the charging area is detected by the fixed temperature sensor and the non-contact temperature sensor 313. When the temperature exceeds the first set value, the temperature is cooled by the air cooling component. When the temperature exceeds the second set value, charging stops. When the temperature returns to the third set value, charging starts again.

[0031] like Figure 4 As shown, the process by which the non-contact temperature sensor 313 detects the temperature of the charging area is as follows: Set the initial angle and angle adjustment interval, and calculate the distance between the non-contact temperature sensor 313 and the detection point based on the initial angle and angle adjustment interval. The calculation formula is as follows: ; in, The distance between the non-contact temperature sensor and the detection point. The distance between the non-contact temperature sensor and the top of the transmitting module (related to the chassis height). The angle adjustment interval is 15°. This represents the number of angle adjustments.

[0032] The temperature at the detection point is corrected based on the distance between the non-contact temperature sensor and the detection point. The calculation formula is as follows: in, The corrected temperature at the detection point. The temperature at the detection point is the uncorrected value. , as well as These are the first fitting coefficient, the second fitting coefficient, and the third fitting coefficient (5, 2, and 0.5, respectively). Right now At that time, the error term was 0.75 degrees Celsius. At that time, the error term was 1.1 degrees Celsius. Temperature detection across the entire range of the transmitting module was achieved by combining the longitudinal position of the moving module.

[0033] When overvoltage, overcurrent, overload, or leakage occurs, the main unit immediately cuts off the output.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A safe wireless charging station, comprising a main body and at least one transmitting module, the transmitting module being electrically connected to the main body, an electrical safety protection module being disposed within the main body, the transmitting module being used for wireless charging when facing a receiving module at the bottom of a vehicle, characterized in that: It also includes a circumferential protection mechanism, a temperature detection and cooling mechanism, and a position adjustment mechanism; The circumferential protection mechanism includes symmetrically arranged folding protection components and symmetrically arranged lifting protection components. The two sets of folding protection components and the two sets of lifting protection components are respectively arranged on the four sides of the launch module. The temperature detection and cooling mechanism includes a temperature detection component and an air cooling component; The position adjustment mechanism is located at the bottom of the launch module.

2. The safe wireless charging station according to claim 1, characterized in that: The folding protective assembly includes a rotating shaft rotatably mounted on the side of the launch module. The rotating shaft is connected to a rotation drive motor. A fixed tube is installed on the rotating shaft. A telescopic tube is installed inside the fixed tube through a lifting module. A connecting plate is connected to the top of the telescopic tube. Several pressure sensors are installed on the top of the connecting plate. A protective net is installed between the connecting plate and the rotating shaft. The lifting module, rotary drive motor, and pressure sensor are all electrically connected to the main body.

3. A safe wireless charging station according to claim 2, characterized in that: The lifting and protective assembly includes a limiting guide plate fixed on the launch module. The limiting guide plate has two guide holes, and a lifting rack is slidably installed in each of the two guide holes. The tops of the two lifting racks are connected to the lifting plate. A pressure sensor is installed on the lifting plate, and a protective net is installed between the lifting plate and the guide limiting plate. One of the limit guide plates is equipped with a lifting drive motor. The output shaft of the lifting drive motor is connected to a drive shaft. The drive shaft is equipped with a first drive gear, a first transmission gear, and a second drive gear in sequence. The first drive gear and the second drive gear mesh with two lifting gears that are opposite to each other in the two lifting protection components. The first transmission gear is connected to the second transmission gear on the driven drive shaft via a belt. The driven drive shaft is also equipped with a first driven gear and a second driven gear. The first driven gear and the second driven gear mesh with two other lifting gears that are opposite to each other in the two lifting protection components. The lifting drive motor is electrically connected to the main body.

4. A safe wireless charging station according to claim 3, characterized in that: The position adjustment mechanism includes four adjusting lifts for adjusting the height and tilt angle of the launch module. The lifting ends of the four adjusting lifts are rotatably connected to the bottom of the launch module, and four distance sensors are installed on the top of the launch module. The lifting device and distance sensor are both electrically connected to the main body.

5. A safe wireless charging station according to claim 4, characterized in that: The temperature detection component includes a fixed temperature sensor and a non-contact temperature sensor. The non-contact temperature sensor is mounted on the lifting plate via a moving module. An angle adjustment gimbal is set on the moving block of the moving module, and the non-contact temperature sensor is mounted on the angle adjustment gimbal.

6. A safe wireless charging station according to claim 5, characterized in that: The air cooling assembly includes several air outlet pipes, which are located on one side and the side of the launch module. The side air outlet pipes are inclined and connected to the air outlet of the cooling fan. The cooling fan is electrically connected to the main body, and a dust collection trough is provided on the launch module.

7. A safe wireless charging station according to claim 6, characterized in that: The electrical safety protection module includes overvoltage circuit, overcurrent circuit, overload circuit, overtemperature protection circuit, and leakage protection circuit.

8. A safe operation method for a safe wireless charging pile according to claim 7, characterized in that, The specific steps are as follows: Step S1: After the car is parked, the user sets the charging parameters through the interactive interface of the mobile terminal or the main unit; the charging parameters include the start time, charging time and target power. The main unit obtains the location information of the receiving module and the battery status information, and completes the pre-charging handshake confirmation. Step S2: Unfold the folding protective components, adjust the height and angle of the transmitting module according to the position information through the position adjustment mechanism, and at the same time, the lifting module and lifting plate are raised to form a physical protection area around the transmitting module to prevent living people or foreign objects from entering the wireless charging area. Step S3: The main body charges according to the charging parameters, and at the same time, the temperature of the charging area is detected by a fixed temperature sensor and a non-contact temperature sensor. When the temperature exceeds the first set value, the temperature is cooled by the air cooling component. When the temperature exceeds the second set value, charging stops. When the temperature returns to the third set value, charging starts again. When overvoltage, overcurrent, overload, or leakage occurs, the main unit immediately cuts off the output.

9. A safe wireless charging station according to claim 8, characterized in that: The deployment process of the perimeter protection mechanism is as follows: After the lifting module is activated to retract the telescopic tube into the fixed tube, the rotary drive motor is activated to drive the rotating shaft to rotate, so that the fixed tube changes from a horizontal state to a vertical state. The lifting module is then activated to raise the telescopic tube, causing the connecting plate to extend upward. At the same time, the lifting drive motor drives the lifting plate to rise until the pressure value of the pressure sensor reaches the set value.

10. A safe wireless charging station according to claim 9, characterized in that: The process of non-contact temperature sensor detecting the temperature of the charging area is as follows: Set the initial angle and angle adjustment interval, and calculate the distance between the non-contact temperature sensor and the detection point based on the initial angle and angle adjustment interval. The calculation formula is as follows: ； in, The distance between the non-contact temperature sensor and the detection point. This refers to the distance between the non-contact temperature sensor and the top of the transmitting module. For angle adjustment intervals, The number of angle adjustments; The temperature at the detection point is corrected based on the distance between the non-contact temperature sensor and the detection point. The calculation formula is as follows: in, The corrected temperature at the detection point. The temperature at the detection point is the uncorrected value. , as well as These are the first fitting coefficient, the second fitting coefficient, and the third fitting coefficient, respectively. Combined with the longitudinal position of the moving module, the full-range temperature scanning and temperature detection of the transmitting module is achieved.

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