A dynamic wireless charging system for a sliding door and a switching method thereof

Abstract

The application provides a dynamic wireless charging system for a sliding door and a switching method thereof, and the system comprises a guide rail, a moving assembly, a transmitter, a receiver and a mounting frame; the mounting frame is arranged in a door wall; the guide rail is mounted at the inner top end of the mounting frame, the moving assembly is mounted in the guide rail, the transmitter is mounted at the front side of the bottom end of the mounting frame, the receiver is mounted at the front side of the top end of the door leaf of the mounting frame, the receiver is arranged in parallel with the transmitter, and a gap is formed between the receiver and the transmitter; the door leaf is connected with the guide rail and the moving assembly respectively; the dynamic wireless charging system for the sliding door and the switching method thereof can effectively optimize the structure of the system, reduce the cost of the system, reduce the space size required for installing the system on the sliding door, improve the use safety and sustainability of the system, and realize dynamic wireless charging of the system on the sliding door.

Description

Technical Field

[0001] This invention relates to the field of smart grid technology, and more specifically, to a dynamic wireless charging system for sliding doors and its switching method. Background Technology

[0002] With the development of technology, the application of smart grids in various industries is becoming increasingly widespread. The improvement and research of sliding doors are also progressing steadily. Currently, sliding doors have functions such as space partitioning and sound insulation, and are further developing towards intelligence. To achieve this goal, the door panels need to be equipped with intelligent electronic devices and sensors. Higher-power appliances and sensors require continuous power supply via cables or high-capacity batteries. However, the frequent reciprocating linear movement of sliding door panels during operation exacerbates problems such as leakage and insufficient battery life when powered by cables or batteries, making it difficult to meet long-term, safe, and stable power supply requirements. Therefore, researching how to solve the door panel power supply problem, get rid of the constraints of power cables, improve safety during charging, and meet the need for charging while the door is in motion is one of the urgent problems to be solved.

[0003] Patent CN209637656U discloses a wirelessly charging telescopic sliding door, including a door panel and a drive head that drives the door panel. The door panel is composed of one or more sliding door panels. The drive head includes an assembled column, a drive head base plate assembly, and a housing. A drive motor is housed in the housing. A wireless charging receiver and a battery are installed on the drive head. The wireless charging receiver charges the battery, and the battery powers the drive motor. However, because it requires a battery to achieve wireless charging, the battery placement on the sliding door increases its space requirements. Furthermore, the battery has limited power and needs to be replaced to ensure continuous operation. Insufficient battery power affects the use of the sliding door, thus limiting its application range. The problem of insufficient battery life also persists. Summary of the Invention

[0004] In view of this, the present invention aims to propose a dynamic wireless charging system and its switching method for sliding doors, to solve the problems in the prior art where the intelligent electronic devices and sensors on the sliding door have high power consumption, requiring continuous power supply from cables or large-capacity batteries. However, due to the frequent reciprocating movement of the sliding door, leakage and insufficient battery life are prone to occur when using cables or batteries for power supply; and the use of batteries in the sliding door also increases the space occupied by the sliding door. The present invention aims to effectively optimize the system structure, reduce the system cost, reduce the space occupied by the system on the sliding door, improve the system's safety and sustainability, and avoid the problems of leakage and insufficient battery life during the movement of the sliding door; thus realizing dynamic wireless charging of the sliding door by the system.

[0005] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0006] This invention relates to a dynamic wireless charging system for sliding doors and its switching method. The dynamic wireless charging system for sliding doors includes a guide rail, a moving component, a transmitter, a receiver, and a mounting bracket. The mounting bracket is installed inside the door wall. The guide rail is installed at the top inside the mounting bracket, the moving component is installed inside the guide rail, the transmitter is installed on the front side of the bottom end of the mounting bracket, and the receiver is installed on the front side of the top end of the door leaf of the mounting bracket. The receiver and the transmitter are arranged parallel to each other and have a certain gap between them. The door leaf is connected to the guide rail and the moving component respectively.

[0007] Furthermore, the moving component includes a drive module, a drive control module, a moving module, and a door connection module; the drive modules are respectively located at both ends of the drive control module, and the drive module and the drive control module are respectively connected to the door connection module through the moving module; the moving module is connected to the door frame of the sliding door leaf.

[0008] Furthermore, the transmitter includes a transmitting coil, a coil core, a transmitting control board, and a transmitting mounting sleeve; the inner wall of the transmitting coil surrounds the outer wall of the coil core; the outer wall of the transmitting coil is fitted with the inner wall of the transmitting mounting sleeve, the transmitting mounting sleeve is installed in the mounting frame, and the top of the transmitting mounting sleeve is fitted with the mounting frame through the transmitting control board.

[0009] Furthermore, the transmitter also includes a left stop and a right stop; the left stop is located between the right side of the launch mounting sleeve and the mounting bracket, and the right stop is located between the left side of the launch mounting sleeve and the mounting bracket.

[0010] Furthermore, at least one transmitting coil, one coil core, and one transmitting fixing sleeve are each provided.

[0011] Furthermore, the transmitting coil, coil core, and transmitting fixing sleeve are all arranged in a linear array within the grooves of the mounting bracket.

[0012] Furthermore, the receiver includes a battery pack, a receiving control module, a receiving coil, a second coil core, and a receiving mounting box; the battery pack, receiving control module, receiving coil, and second coil core are all set in the mounting slot inside the receiving mounting box, and the inner sidewall of the receiving coil surrounds the outer sidewall of the second coil core; the receiving mounting box is set parallel to the transmitter.

[0013] Furthermore, the system also includes a transmitting power conversion circuit and a receiving power conversion circuit; the transmitting power conversion circuit is located on the inner wall of the guide rail, and the receiving power conversion circuit is located on the outer side of the door leaf. One end of the transmitting power conversion circuit is connected to the power supply, and the other end of the transmitting power conversion circuit is connected to the transmitter; one end of the receiving power conversion circuit is connected to the load, and the other end of the receiving power conversion circuit is connected to the receiver.

[0014] Furthermore, the transmitting power conversion circuit includes a high-frequency inverter and a compensation circuit; one end of the high-frequency inverter is connected to the power supply, and the other end of the high-frequency inverter is connected to the transmitting coil through the compensation circuit.

[0015] A switching method for a dynamic wireless charging system for sliding doors, characterized in that the method includes the aforementioned dynamic wireless charging system for sliding doors, and the method includes the following steps:

[0016] Step 1: Power on the system.

[0017] Step 2: Input the horizontal center distance Ld between adjacent transmitting coils, the limit offset distance L0 of a single receiving coil, and the number of transmitting coils n; n is a positive integer and n≥1;

[0018] Step 3: Receive displacement signal x;

[0019] Step 4: Determine whether the displacement x satisfies the first interval or the second interval. If yes, adjust the energization of each transmitting coil and keep the corresponding transmitting coil energized after adjustment.

[0020] Step 5: Determine if the sliding door should continue charging? If yes, return to step 3; if no, continue dynamic charging of the sliding door.

[0021] Compared with existing technologies, the dynamic wireless charging system and switching method for sliding doors described in this invention have the following advantages:

[0022] By setting up the system, the system structure can be effectively optimized, the system cost reduced, the space required for installation on the sliding door decreased, the system's safety and sustainability improved, and problems such as leakage during charging and insufficient battery life were avoided during the sliding door's movement. The method also enables dynamic wireless charging of the sliding door and improves the system's charging efficiency. Attached Figure Description

[0023] The accompanying drawings, which constitute a part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0024] Figure 1 A schematic diagram of the overall structure of the sliding door and its dynamic wireless charging system;

[0025] Figure 2 A schematic diagram showing the positions of the various components inside the dynamic wireless charging system on the sliding door;

[0026] Figure 3 A schematic diagram of a dynamic wireless charging system;

[0027] Figure 4 This is a schematic diagram showing the curve of coupling coefficient as a function of coil length;

[0028] Figure 5 A flowchart illustrating the optimized settings for the coupling coil;

[0029] Figure 6 A schematic diagram of the power supply control process for switching the transmitting coil of a sliding door;

[0030] Figure 7 A schematic diagram of the transmitting coil switching strategy for a dynamic wireless charging system for sliding doors;

[0031] Figure 8 This is a schematic diagram of the moving component structure of a sliding door;

[0032] Figure 9 This is a schematic diagram of the transmitter's structure;

[0033] Figure 10 This is a schematic diagram of the receiver.

[0034] Explanation of reference numerals in the attached diagram: 1. Guide rail; 2. Moving component; 20. Drive module; 21. Drive control module; 22. Moving module; 23. Door connection module; 3. Transmitter; 31. Transmitting coil; 32. Coil core 1; 33. Transmitting control board; 34. Transmitting fixing sleeve; 35. Left stop; 36. Right stop; 4. Receiver; 41. Battery pack; 42. Receiver control module; 43. Receiver coil; 44. Coil core 2; 45. Receiver mounting box; 46. Receiver stop; 5. Mounting bracket; 6. Door leaf; 7. Transmitting power conversion circuit; 71. High-frequency inverter; 72. Compensation circuit 1; 8. Receiver power conversion circuit; 81. Voltage conversion circuit; 82. Rectifier and filter circuit; 83. Compensation circuit 2. Detailed Implementation

[0035] The inventive concepts of this disclosure will be described below using terminology commonly used by those skilled in the art to communicate the essence of their work to others skilled in the art. However, these inventive concepts may be embodied in many different forms and should not be construed as limited to the embodiments described herein.

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0037] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this 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 this invention.

[0038] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] To address the shortcomings of existing technologies, such as the need for continuous power supply from cables or high-capacity batteries for the high-power electrical components and sensors integrated into sliding doors, which are prone to leakage and insufficient battery life due to the frequent reciprocating motion of sliding doors, and the added space occupied by batteries in sliding doors, this embodiment proposes a dynamic wireless charging system and its switching method for sliding doors. The dynamic wireless charging system for sliding doors includes a guide rail 1, a moving component 2, a transmitter 3, a receiver 4, and a mounting frame 5. The mounting frame 5 is installed inside the door wall as a fixed component. The guide rail 1 is installed at the top of the mounting frame 5, the moving component 2 is installed inside the guide rail 1, the transmitter 3 is installed on the front side of the bottom end of the mounting frame 5, and the receiver 4 is installed on the front side of the top end of the door leaf 6. The receiver 4 and the transmitter 3 are arranged parallel to each other with a certain gap between them. The door leaf 6 is connected to the guide rail 1 and the moving component 2. The guide rail 1 is a sliding door guide rail, used to provide installation space for the sliding door. The moving component 2 is the sliding door moving component. The transmitter 3 is a guide rail transmitting coil mounting box assembly. The receiver 4 is a door leaf receiving coil mounting box assembly. The mounting bracket 5 is a guide rail wireless charging mounting bracket.

[0040] By setting up the system, the system structure can be effectively optimized, the system cost can be reduced, the space required for the system to be installed on the sliding door can be reduced, the system's safety and sustainability can be improved, and problems such as leakage during charging and insufficient battery life can be avoided during the movement of the sliding door.

[0041] Specifically, the moving component 2 includes a drive module 20, a drive control module 21, a moving module 22, and a door connection module 23. The drive modules 20 are respectively located at both ends of the drive control module 21, and the drive modules 20 and 21 are connected to the door connection module 23 via the moving module 22. Specifically, the moving module 22 is located at the bottom of the drive module 20 and / or the drive control module 21, and there is a certain gap between the moving module 22 and the drive module 20 and / or the drive control module 21, or the moving module 22 is in close contact with the drive module 20 and / or the drive control module 21. The moving module 22 is connected to the door frame of the sliding door leaf 6.

[0042] By coordinating the drive module 20, drive control module 21, movement module 22, and door connection module 23, the system can effectively achieve automatic control of the reciprocating motion of the sliding door, improve the automation and intelligence of the sliding door's movement, and reduce the manual labor costs required for manually operating the sliding door's opening and closing.

[0043] The transmitter 3 includes a transmitting coil 31, a coil core 32, a transmitting control board 33, and a transmitting mounting sleeve 34. The inner wall of the transmitting coil 31 surrounds the outer wall of the coil core 32; the outer wall of the transmitting coil 31 is fitted with the inner wall of the transmitting mounting sleeve 34, which is housed within a mounting frame 5. The top of the transmitting mounting sleeve 34 is fitted with the mounting frame 5 via the transmitting control board 33. The coil core 32 is the transmitting coil core; the transmitting control board 33 is the control board module for the transmitting coil; and the transmitting mounting sleeve 34 is the mounting sleeve assembly for the transmitting coil.

[0044] By cooperating with the transmitting coil 31, the coil core 32, the transmitting control board 33, and the transmitting fixing sleeve 34, the stability of the transmitter 3 structure can be improved. On the other hand, a changing magnetic field can be generated to stimulate the induction effect of the receiving coil 43 in the receiver 4. It can also cooperate with the receiver 4 to form magnetic coupling, thereby generating magnetic interaction force to realize dynamic wireless charging of the load, and thus drive the reciprocating movement of the sliding door.

[0045] In addition, the transmitter 3 also includes a left stop 35 and a right stop 36. Both the left stop 35 and the right stop 36 are located between the transmitting sleeve 34 and the mounting bracket 5. The left stop 35 is located between the right side of the transmitting sleeve 34 and the mounting bracket 5, and the right stop 36 is located between the left side of the transmitting sleeve 34 and the mounting bracket 5. Specifically, the left stop 35 is the left stop for the transmitting coil box; the right stop 36 is the right stop for the transmitting coil box. Furthermore, at least one transmitting coil 31, one coil core 32, and one transmitting sleeve 34 are each provided, and they are arranged in a linear array within the grooves of the mounting bracket 5. The transmitting coil 31 is connected to the power supply via the transmitting power conversion circuit 7. The transmitting coil 31 is an n-segment rectangular coil, where n is a positive integer and n≥1.

[0046] By setting the left stop 35 and the right stop 36, the movement range of the sliding door in the system can be limited, thereby improving the safety and stability of the sliding door operation.

[0047] The receiver 4 includes a battery pack 41, a receiving control module 42, a receiving coil 43, a second coil core 44, and a receiving mounting box 45. The battery pack 41, receiving control module 42, receiving coil 43, and second coil core 44 are all disposed in mounting slots within the receiving mounting box 45. The inner wall of the receiving coil 43 surrounds the outer wall of the second coil core 44. The receiving mounting box 45 is arranged parallel to the transmitter 3. The receiving coil 43 and the second coil core 44 are disposed in the same mounting slot within the receiving mounting box 45, and the receiving control module 42 is disposed in a mounting slot adjacent to the mounting slot within the receiving mounting box 45 where the receiving coil 43 is disposed. At least one of each of the following is provided: battery pack 41, receiving coil 43, and second coil core 44. The receiving mounting box 45 includes at least one mounting slot. In this embodiment, the receiving control module 42 is the control module for the receiving coil; the second coil core 44 is the core inside the receiving coil 43; and the receiving mounting box 45 is the outer mounting box for the receiving coil 43. The required electrical load is connected to the receiving coil 43 of the receiver 4 via the power conversion circuit 8. The receiving coil 43 is a charging coil. Furthermore, the receiver 4 includes a receiving stop 46, which is positioned between the left side of the receiving mounting box 45 and the mounting bracket 5.

[0048] By configuring the components within receiver 4, it can work in conjunction with transmitter 3 to achieve dynamic wireless charging of the load. On the other hand, the interaction between receiving coil 43 and transmitting coil 31 can generate mechanical thrust. Under the action of at least one transmitting coil 31, wireless charging of the load on the sliding door can be achieved even during the reciprocating motion of the sliding door, thereby continuously supplying power to the sliding door through the load.

[0049] Preferably, one receiving coil 43, one coil core 44, and one receiving control module 42 are each provided, five battery packs 41 are provided, and seven mounting slots are provided in the receiving mounting box 45. Three battery packs 41, the receiving coil 43, the receiving control module 42, and the other two battery packs 41 are arranged sequentially in the seven mounting slots of the receiving mounting box 45 from right to left.

[0050] By installing the various battery packs 41, the receiving coil 43, the coil core 44, and the receiving control module 42 inside the receiver 4, the space occupied by the receiver 4 on the sliding door can be reduced, thereby increasing the scope of application of the system.

[0051] Door leaf 6 includes glass and a door frame. The glass is set inside the door frame, and the top of the door frame is connected to the guide rail 1 and the moving assembly 2. The electrical load equipment required by the system is installed on the door frame of door leaf 6. The required electrical load is connected to the receiver 4 through the power conversion circuit 8. Two Hall sensors are installed on the mounting bracket 5 of the sliding door guide rail 1 to detect the position of the receiving coil 43 and the door leaf 6. A single / dual transmitting coil 31 switching strategy is adopted to enable the coil to obtain a relatively stable coupling effect and provide stable and efficient dynamic charging performance.

[0052] By setting up the various components on door leaf 6, installation space can be provided for the installation of some components of the system, and the space occupied by the sliding door and the system as a whole can be reduced, expanding the system's adaptability and improving the ease of system installation.

[0053] The system also includes a transmitting power conversion circuit 7 and a receiving power conversion circuit 8. The transmitting power conversion circuit 7 is located on the inner wall of the guide rail 1, and the receiving power conversion circuit 8 is located on the outer side of the door leaf 6. One end of the transmitting power conversion circuit 7 is connected to the power supply, and the other end of the transmitting power conversion circuit 7 is connected to the transmitting coil 31 of the transmitter 3. One end of the receiving power conversion circuit 8 is connected to the load, and the other end of the receiving power conversion circuit 8 is connected to the receiving coil 43 of the receiver 4.

[0054] By setting up the transmitting power conversion circuit 7 and receiving power conversion circuit 8 within the system, the conversion of electrical signals between the power source and the load can be realized, which can further improve the stability and safety of power conversion and ensure the reliability of power conversion.

[0055] The power conversion circuit 7 includes a high-frequency inverter 71 and a compensation circuit 72. One end of the high-frequency inverter 71 is connected to a power source, and the other end of the high-frequency inverter 71 is connected to the transmitting coil 31 via the compensation circuit 72. At least one compensation circuit 72 is provided. The number of compensation circuits 72 is the same as the number of transmitting coils 31, with one compensation circuit 72 corresponding to each transmitting coil 31. Each compensation circuit 72 is connected to the high-frequency inverter 71.

[0056] By combining the high-frequency inverter 71 and the compensation circuit 72, the operational stability of the transmitting power conversion circuit 7 can be improved, the power supply to the sliding door can be increased, and the operational reliability of the system can be enhanced.

[0057] The power conversion circuit 8 includes a voltage conversion circuit 81, a rectifier and filter circuit 82, and a compensation circuit 83. One end of the voltage conversion circuit 81 is connected to the required electrical load; the other end of the voltage conversion circuit 81 is connected to the receiving coil 43 of the receiver 4 via the rectifier and filter circuit 82 and the compensation circuit 83 in sequence. The voltage conversion circuit 81 is a DC-DC converter circuit.

[0058] Working principle: The power supply outputs DC power, which is converted into high-frequency AC power by the high-frequency inverter 71. After resonance by the compensation circuit 72 at the transmitting end, a high-frequency magnetic field is generated around the transmitting coil 31. The receiving coil 43 generates AC power of the same frequency in the high-frequency magnetic field. After passing through the compensation circuit 83 and the rectifier and filter circuit 82, it becomes DC power, which is then converted into DC power by the DC-DC converter circuit to power the lithium battery in the required electrical load.

[0059] By combining the voltage conversion circuit 81, the rectifier filter circuit 82, and the compensation circuit 83, the error of dynamic wireless charging in the system can be reduced, the efficiency of dynamic wireless charging can be improved, and the reliability of dynamic wireless charging can be enhanced.

[0060] This application is for sliding doors, which aim for extremely narrow widths and have fewer restrictions on height. The dimensions of the guide rail 1 for common sliding doors are shown in Table 1. Based on these dimensions, it is easy to conclude that the coupling coil formed by the energized transmitting coil 31 and receiving coil 43 of the dynamic wireless charging system of this application should be arranged on the vertical side of the door leaf 6, i.e., on one side of the plane along the vertical direction of the door leaf 6. The transmitting coil 31 is installed inside the guide rail 1, and the receiving coil 43 is installed on the door leaf 6. Furthermore, the width of the coupling coil should not exceed 50mm.

[0061] Table 1. Guide rail parameters for common sliding doors

[0062] parameter Value (mm) Guide rail height 60-100 Guide rail width 40-60 Guide rail length 1500-3500

[0063] The coupling structure of transmitter 3 in this application employs a multi-segment rectangular coil. This multi-segment coil uses rectangular coils with good anti-offset performance; that is, both the transmitting coil 31 and the receiving coil 43 are rectangular coils. The transmitting coil 31 and the receiving coil 43 are asymmetrical coils with different lengths but the same width. Furthermore, the iron core 32 of coil one and the iron core 44 of coil two are both thin rectangular iron cores. Based on the width and height of the guide rail 1 in a common sliding door, this application provides a curve showing the coupling coefficient as a function of coil length, such as… Figure 4 As shown, a set of coil length data is taken; a thin rectangular magnetic core is used at the center of the coil, and the structural parameters of a coupling coil are finally set as shown in Table 2 below.

[0064] Table 2 Coupled Coil Parameters

[0065] Parameter name Numerical value (unit) Transmitting coil size 70 mm × 50 mm Receiver coil size 100 mm × 50 mm Number of coil turns 10 wire diameter 1.25 mm single fine wire diameter 0.1 mm Number of turns of fine wire in a single Litz wire 80 Vertical center distance 5 mm Transmitting coil core size 70 mm × 50 mm × 1 mm Transmitting coil core size 100 mm × 50 mm × 1 mm Core pitch 0 mm

[0066] In this application, the horizontal center distance between two adjacent transmitting coils 31 is 75mm, which has a small coupling coefficient fluctuation rate and can effectively improve the stability of coupling. When there are n transmitting coils 31, the horizontal offset range of the receiving coil 43 should not exceed -20mm-(75(n-1)+20)mm, and the total stroke is (75(n-1)+40)mm. That is, for each additional transmitting coil 31, the displacement can increase by a maximum of 75mm.

[0067] Preferably, this application provides an example of the horizontal center spacing and layout of each coil in the transmitting coil 31 of a guide rail 1. The method of setting the transmitting coil 31 is applicable to all sliding doors. When the coil width is set to no more than 50 mm, the horizontal center distance of the transmitting coils of the guide rail is 75 mm. The coupling coefficient fluctuation rate between the transmitting coil 31 and the receiving coil 43 is the lowest, which can effectively improve the stability of coupling.

[0068] Specifically, an optimized setting method for the coupling coil within a dynamic wireless charging system for sliding doors includes the following steps:

[0069] Step S100: Analyze the shapes of the transmitting coil 31 and the receiving coil 43 respectively, and select the transmitting coil 31 and the receiving coil 43 with the required shapes respectively;

[0070] Step S101: Analyze the parameters of the transmitting coil 31 and the receiving coil 43 respectively, and select the transmitting coil 31 and the receiving coil 43 with the required parameters respectively;

[0071] Step S102: Determine whether the coupling performance and anti-offset performance of the selected transmitting coil 31 and receiving coil 43 are good? If yes, proceed to step S103; if no, return to step S101.

[0072] Step S103: Analyze the parameters of coil core 32 and coil core 44 respectively, and select coil core 32 and coil core 44 with the required parameters;

[0073] Step S104: Determine whether the performance and anti-offset performance of coil core 32 and coil core 44 are superior? If yes, proceed to step S105; if no, return to step S103.

[0074] Step S105: Analyze the horizontal center distance between two adjacent transmitting coils 31 in at least one transmitting coil 31, and select the required horizontal center distance;

[0075] Step S106: Determine whether the selected horizontal center distance meets the requirements of low coupling fluctuation rate or low self-coupling effect? ​​If yes, proceed to step S107; if no, adjust the spacing between the two adjacent transmitting coils 31 and repeat step S106.

[0076] Step S107: Select the required number of transmitting coils 31; and determine whether the selected number of transmitting coils 31 satisfies the optimal power supply arrangement? If yes, determine the parameters of the optimal magnetic coupling coil structure. If no, increase the spacing of the transmitting coils 31 and return to step S106.

[0077] Step S106 includes:

[0078] Step S1061: Determine whether the selected horizontal center distance meets the requirement of low coupling fluctuation rate? If yes, proceed to step S107; if no, reduce the spacing between the two adjacent transmitting coils 31 and repeat step S1061.

[0079] Step S106 also includes:

[0080] Step S1061': Determine whether the selected horizontal center distance meets the requirement of a small self-coupling effect? ​​If yes, proceed to step S107; if no, increase the spacing between the two adjacent transmitting coils 31 and repeat step S1061'.

[0081] In this embodiment, "better" and "smaller" are only relative to the corresponding parameter comparison values ​​in different sets of data tested, and do not have any other implications.

[0082] By optimizing the coupling coil configuration, the number of transmitting coils 31 and the distance between adjacent transmitting coils 31 can be effectively increased, thereby ensuring the stability of the system's dynamic wireless charging and improving the efficiency and reliability of the system's wireless charging.

[0083] The coupling coil optimization setting method of this application can save energy waste during system operation. In practical applications, the switching strategy of single and dual transmitting coil 31 power supply is optimized by limiting the minimum coupling coefficient of the access coil to 0.1. Finally, the coupling coefficient within the power supply range of -20 mm to 170 mm is determined. The coupling coefficient remains basically unchanged in the power supply areas of single transmitting coil 31 and dual transmitting coil 31. The coupling coefficient fluctuation rate is 0.12 throughout the process, and the coupling stability of the system is greatly improved.

[0084] In addition, a Hall sensor for detecting the position of the motor mover is used to detect the displacement of the receiving coil 43, so as to ensure that the coupling coefficient between the receiving coil 43 and each transmitting coil 31 is measured at all times and compared with 0.1, thereby realizing the switching strategy of power supply for single and dual transmitting coils 31.

[0085] A power switching method for a dynamic wireless charging system for sliding doors, the method comprising the following steps:

[0086] Step 1: Power on the system;

[0087] Step 2: Input the horizontal center distance Ld between adjacent transmitting coils 31, the limit offset distance L0 of a single receiving coil 43, and the number n of transmitting coils 31; n is a positive integer and n≥1.

[0088] Step 3: Receive displacement signal x;

[0089] Step 4: Determine whether the displacement x satisfies the first interval or the second interval. If yes, adjust the energization of each transmitting coil 31 and keep the corresponding transmitting coil 31 energized after adjustment.

[0090] Step 5: Determine if the sliding door should continue charging? If yes, return to step 3; if no, continue dynamic charging of the sliding door.

[0091] The first interval is [(i-2)Ld+L0, i×Ld-L0]; the second interval is (j×Ld-L0, (j-1)Ld+L0), where i and j are the i-th and j-th transmitting coils, respectively. The value of i is 1, 2, ..., n; the value of j is 1, 2, ..., n-1.

[0092] By configuring the method described above, dynamic wireless charging of the sliding door can be achieved, improving the system's charging efficiency. Furthermore, considering the limitations of the sliding door guide rail 1 structure, a coupling coil is incorporated. An optimization method is proposed to increase the horizontal center distance between two adjacent transmitting coils 31 and reduce the number of transmitting coils 31, satisfying the goal of moving the sliding door using only a single transmitting coil 31 at the starting and ending positions of the door leaf 6. A superior single / dual transmitting coil 31 switching strategy is also proposed for the dynamic wireless charging system. This strategy limits the minimum coupling coefficient when powering the transmitting coil 31, successfully reducing system transmission fluctuations and improving system operational stability.

[0093] Specifically, step four includes:

[0094] Step S41: Determine whether the displacement x satisfies (i-2)Ld+L0≤x≤i×Ld-L0? If yes, the i-th transmitting coil 31 is energized, the remaining n-1 transmitting coils 31 are not energized, and the corresponding transmitting coil 31 after adjustment is kept energized; proceed to step five.

[0095] Or step four includes:

[0096] Step S41': Determine if the displacement x satisfies j×Ld-L0≤x≤(j-1)Ld+L0? If yes, the j-th and j+1-th transmitting coils 31 are energized, the remaining n-2 transmitting coils 31 are not energized, and the corresponding transmitting coils 31 after adjustment are kept energized; proceed to step five.

[0097] By setting up the two methods in parallel in step four, the flexibility of system power supply switching can be effectively improved, ensuring accurate and efficient switching of dynamic power supply within the system.

[0098] Preferably, the novel dynamic wireless charging system of this application is applicable to all sliding doors that make reciprocating motions, and is not limited to the driving method of the sliding door, including but not limited to sliding doors using driving methods such as rotary motors and linear motors.

[0099] Example 1:

[0100] During the process of the receiving coil 43 on the sliding door moving from the starting position to the ending position, the power supply switching process of the transmitting coil 31 can be divided into the following seven steps:

[0101] Step 1: Initially, the center of the receiving coil 43 on the sliding door is aligned with point x0, which is the starting point. At this time, the sliding door is located at the leftmost end. The sliding door may remain stationary at point x0 or move to the right after receiving the door opening signal. Point x0 is within the optimal power supply range. At this point, only the coupling coefficient of the first transmitting coil 31 is greater than 0.1, so only the first transmitting coil 31 is energized, and the other transmitting coils 31 are de-energized.

[0102] Step 2: The sliding door moves to the right until it is directly opposite point x1 of the receiving coil 43. At this point, the receiving coil 43 is directly opposite the first transmitting coil 31. Because the coupling coefficient of all the other transmitting coils 31 except the first transmitting coil 31 is less than 0.1, only the first transmitting coil 31 is energized, while the other transmitting coils 31 are de-energized.

[0103] Step 3: The sliding door moves to the right until it reaches point x2, which is directly opposite the receiving coil 43. This point is L0 from the center of the second transmitting coil 31, and is the entry point for the second transmitting coil 31. At this point, the coupling coefficient of the first transmitting coil 31 is greater than 0.1, and it is energized. At this time, the coupling coefficient of the second transmitting coil 31 is 0.1, and it is also energized. As the sliding door moves to the right, the receiving coil 43 will enter the region where the coupling coefficient of the second transmitting coil 31 is greater than 0.1.

[0104] Step 4: The sliding door moves to the right until it reaches point x3, which is directly opposite the receiving coil 43. This point is L0 from the center of the first transmitting coil 31, and is the cut-out point of the first transmitting coil 31. At this point, the coupling coefficient of the second transmitting coil 31 is greater than 0.1, and it is energized. At this time, the coupling coefficient of the first transmitting coil 31 is 0.1, but because the sliding door will move to the right, the subsequent coupling coefficient will be less than 0.1, so the first transmitting coil 31 will soon be de-energized.

[0105] Step 5: The sliding door moves to the right until it is directly opposite point x4 of the receiving coil 43. At this point, the receiving coil 43 is directly opposite the second transmitting coil 31. Because only the second transmitting coil 31 has a coupling coefficient greater than 0.1 at this point, only the second transmitting coil 31 is energized, while the other transmitting coils 31 are de-energized.

[0106] Step 6: The sliding door moves to the right, repeating steps 2-5 until it reaches point x3n+1. At this point, only the nth transmitting coil 31 is energized.

[0107] Step 7: The sliding door moves to the right until it reaches point x3n+2, which is the termination point. The sliding door stops moving at this point, and it is located at the rightmost end, within the optimal power supply range. The sliding door remains stationary at the termination point until it receives a closing signal and begins moving to the left. The closing process is the same as the opening process, repeating steps 1-7.

[0108] When powered by dual transmitting coil 31, the maximum output power is 44.7W and the maximum transmission efficiency is 62% throughout the process.

[0109] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 dynamic wireless charging system for sliding doors, characterized in that, The system includes a guide rail (1), a moving component (2), a transmitter (3), a receiver (4), and a mounting bracket (5). The mounting bracket (5) is located inside the door wall. The guide rail (1) is installed at the top inside the mounting bracket (5), the moving component (2) is installed inside the guide rail (1), the transmitter (3) is installed on the front side of the bottom end of the mounting bracket (5), and the receiver (4) is installed on the front side of the top end of the mounting bracket door leaf (6). The receiver (4) and the transmitter (3) are arranged parallel to each other, and there is a certain gap between the receiver (4) and the transmitter (3). The door leaf (6) is connected to the guide rail (1) and the moving component (2) respectively. The moving component (2) includes a drive module (20), a drive control module (21), a moving module (22), and a door connection module (23). The drive module (20) is located at both ends of the drive control module (21), and the drive module (20) and the drive control module (21) are connected to the door connection module (23) through the moving module (22). The moving module (22) is connected to the door frame of the sliding door leaf (6). The system also includes a transmitting power conversion circuit (7) and a receiving power conversion circuit (8); the transmitting power conversion circuit (7) is located on the inner wall of the guide rail (1), and the receiving power conversion circuit (8) is located on the outer side of the door leaf (6). One end of the transmitting power conversion circuit (7) is connected to the power supply, and the other end of the transmitting power conversion circuit (7) is connected to the transmitter (3); one end of the receiving power conversion circuit (8) is connected to the load, and the other end of the receiving power conversion circuit (8) is connected to the receiver (4); The system can apply the switching method of the dynamic wireless charging system for sliding doors, the method including the following steps: Step 1: Power on the system; Step 2: Input the horizontal center distance Ld between adjacent transmitting coils (31), the limit offset distance L0 of a single receiving coil (43), and the number n of transmitting coils (31); n is a positive integer and n≥1; Step 3: Receive displacement signal x; Step 4: Determine whether the displacement x satisfies the first interval or the second interval respectively; if yes, adjust the energization of each transmitting coil (31) and keep the corresponding transmitting coil (31) energized after adjustment; the first interval is [(i-2)Ld+L0, i×Ld-L0]; the second interval is (j×Ld-L0, (j-1)Ld+L0), i and j are the i-th and j-th transmitting coils 31 respectively; the value of i is 1, 2, ..., n; the value of j is 1, 2, ..., n-1; Step 5: Determine whether the sliding door should continue charging; if yes, return to step 3; if no, continue dynamic charging of the sliding door. Specifically, step four includes: Step S41: Determine whether the displacement x satisfies (i-2)Ld+L0≤x≤i×Ld-L0; if yes, the i-th transmitting coil 31 is energized, the remaining n-1 transmitting coils 31 are not energized, and the corresponding transmitting coil 31 after adjustment is kept energized; proceed to step five; Or step four includes: Step S41': Determine whether the displacement x satisfies j×Ld-L0≤x≤(j-1)Ld+L0; if yes, the j-th and j+1-th transmitting coils 31 are energized, the remaining n-2 transmitting coils 31 are not energized, and the corresponding transmitting coils 31 after adjustment are kept energized; proceed to step five.

2. The dynamic wireless charging system for a sliding door according to claim 1, characterized in that, The transmitter (3) includes a transmitting coil (31), a coil core (32), a transmitting control board (33), and a transmitting fixing sleeve (34); the inner wall of the transmitting coil (31) surrounds the outer wall of the coil core (32); the outer wall of the transmitting coil (31) is in contact with the inner wall of the transmitting fixing sleeve (34), the transmitting fixing sleeve (34) is set in the mounting frame (5), and the top of the transmitting fixing sleeve (34) is in contact with the mounting frame (5) through the transmitting control board (33).

3. A dynamic wireless charging system for a sliding door according to claim 2, characterized in that, The transmitter (3) also includes a left stop (35) and a right stop (36); the left stop (35) is located between the right side of the launch fixing sleeve (34) and the mounting bracket (5), and the right stop (36) is located between the left side of the launch fixing sleeve (34) and the mounting bracket (5).

4. A dynamic wireless charging system for a sliding door according to claim 2, characterized in that, At least one of each of the following is provided: the transmitting coil (31), the coil core (32), and the transmitting fixing sleeve (34).

5. A dynamic wireless charging system for a sliding door according to claim 2, characterized in that, The transmitting coil (31), coil core (32), and transmitting fixing sleeve (34) are all arranged in a linear array in the groove of the mounting bracket (5).

6. A dynamic wireless charging system for a sliding door according to claim 1, characterized in that, The receiver (4) includes a battery pack (41), a receiving control module (42), a receiving coil (43), a coil core (44), and a receiving mounting box (45). The battery pack (41), the receiving control module (42), the receiving coil (43), and the coil core (44) are all installed in the mounting slots inside the receiving mounting box (45). The inner sidewall of the receiving coil (43) surrounds the outer sidewall of the coil core (44). The receiving mounting box (45) is arranged parallel to the transmitter (3).

7. A dynamic wireless charging system for a sliding door according to claim 1, characterized in that, The transmitting power conversion circuit (7) includes a high-frequency inverter (71) and a compensation circuit (72); one end of the high-frequency inverter (71) is connected to the power supply, and the other end of the high-frequency inverter (71) is connected to the transmitting coil (31) through the compensation circuit (72).

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