Lifting module, wireless charger and vehicle-mounted wireless charging device

Abstract

This application discloses a lifting module, a wireless charger, and an in-vehicle wireless charging device. The lifting module includes a power source, a motion seat, a guide, a linkage mechanism, and a connector. The motion seat has an inclined support surface. When the power source drives the motion seat to move in the X direction, the inclined surface drives the connector to rise and fall, and the linkage mechanism drives the transmitting coil module to rise and fall, with ZQ=ZM>ZP, achieving an amplification effect of the lifting displacement. The two-stage transmission of inclined surface lifting and linkage displacement amplification achieves a larger lifting stroke within a limited height space, effectively reducing the overall thickness of the device. The support surface is provided with a positioning groove to accurately lock multiple height levels. An elastic element is configured to assist in automatic descent. The wireless charger is equipped with the above-mentioned lifting module to solve the problem of lens protrusion alignment. The in-vehicle wireless charging device is equipped with a receiving cavity with enclosing sidewalls to prevent the device from slipping. This application has a compact structure, thin thickness, high lifting accuracy, and stable operation, and is suitable for space-constrained scenarios such as vehicles.

Description

Technical Field

[0001] This application relates to the field of charging, and in particular to a lifting module, a wireless charger, and an in-vehicle wireless charging device. Background Technology

[0002] With the widespread adoption of mobile devices, wireless charging technology has been widely used due to its convenience and lack of interface wear. Wireless chargers utilize the principle of electromagnetic induction, achieving wireless power transmission through electromagnetic coupling between the transmitting and receiving coils. The alignment accuracy of the transmitting and receiving coils directly affects charging efficiency and user experience.

[0003] Currently, the camera modules on the back of devices to be charged (such as smartphones) generally have a protruding structure, resulting in an uneven back surface. When the device is placed on a fixed wireless charger, the protruding lens prevents the plane of the receiving coil from being parallel to the plane of the transmitting coil, causing a tilt and misalignment between the two coils, which severely affects coil coupling efficiency and charging power. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a lifting module, a wireless charger, and an in-vehicle wireless charging device, which can achieve a greater lifting range within a limited height space.

[0005] The purpose of this application and the technical problem it solves are achieved by the following technical solution.

[0006] This application provides a lifting module for a wireless charger's transmitting coil module. The lifting module includes a base plate, a power source, a motion seat, a guide member, a connector, and at least two linkage mechanisms. The power source is mounted on the base plate. The motion seat is drivenly connected to the power source and has a support surface, including an inclined surface that slopes upwards towards the X direction. The guide member extends vertically and guides the transmitting coil module to move vertically in a directional manner. Each linkage mechanism has a power input point and a power output point. All power output points are directly connected to the transmitting coil module. Each linkage mechanism includes a first link and a second link. The first end of the connecting rod is hinged to the base plate at a first hinge point; the first end of the second connecting rod is hinged to the tail end of the first connecting rod at a second hinge point, and the tail end of the second connecting rod has a third hinge point and is connected to the power output point; the connecting member abuts against the support surface of the motion seat, and the connecting member is fixedly connected to all the power input points; when the power source drives the motion seat to move along the X direction, the motion seat drives the connecting member to rise and fall, and the connecting rod mechanism drives the transmitting coil module to rise and fall. The rising and falling displacement of the power output point is ZQ, the rising and falling displacement of the transmitting coil module is ZM, and the rising and falling displacement of the power input point is ZP, where ZQ = ZM > ZP > 0.

[0007] As an optional implementation, the linkage mechanism further includes a third link, and the linkage mechanism is a three-stage linkage mechanism. The first end of the third link is hinged to the tail end of the second link at the third hinge point. The tail end of the third link has a fourth hinge point, which is the power output point. The third link is configured to be hinged to the transmitting coil module at the fourth hinge point.

[0008] As an optional implementation, the linkage mechanism is a two-stage linkage mechanism, the third hinge point is the power output point, and the second link is configured to have a pivotal hinge and a sliding connection in a second direction with the transmitting coil module at the third hinge point, the second direction being perpendicular to the first direction.

[0009] As an optional implementation, the linkage mechanism is provided as four, the four linkage mechanisms are distributed at intervals along the Y direction and they have the same number of stages, the connector extends along the Y direction, the four power output points are distributed at intervals along the circumference of the transmitting coil module, the four linkage mechanisms are paired up to form two sets of linkage mechanisms, the two sets of linkage mechanisms are respectively located at the two axial ends of the connector, and the motion seat is connected to the middle section of the connector.

[0010] As an optional implementation, each linkage mechanism further includes a first elastic element, and the connecting member moves downward along the first direction under the drive of the first elastic element.

[0011] As an optional implementation, the first elastic element is a first torsion spring, which is sleeved on the outer periphery of the axial end of the connector. At least one second connecting rod is provided with a plurality of insertion holes, which are distributed circumferentially around the connector. One end of the first torsion spring can be selectively inserted into one of the plurality of insertion holes, and the other end is fixedly connected to the adjacent second connecting rod.

[0012] As an optional implementation, the lifting module further includes a second elastic element and a fixed rod. The fixed rod is fixedly connected to the housing and suspended in the air. The second elastic element is sleeved on the outer periphery of the fixed rod. One end of the second elastic element is fixedly connected to the housing, and the other end elastically abuts against the connecting member. The connecting member moves downward along the first direction under the drive of the second elastic element.

[0013] As an optional implementation, the motion seat has upwardly protruding limiting convex walls on opposite sides of the support surface in the Y direction. The support surface and the two limiting convex walls enclose a guide groove. The connecting member is provided with a rolling element, which rolls within the guide groove of the motion seat.

[0014] As an optional implementation, the support surface has three positioning slots, with the openings of the positioning slots facing upwards. The support surface between two adjacent positioning slots is an inclined surface, which smoothly transitions into the positioning slot. The three positioning slots correspond to three height levels on the transmitting end plane of the transmitting coil module.

[0015] This application also provides a wireless charger. The vehicle-mounted wireless charging device includes a housing, a transmitting coil module, a flexible covering layer, and a lifting module as described in any of the above. The lifting module is located inside the housing. The top surface of the housing has an opening. The transmitting coil module is arranged inside the housing corresponding to the opening. The substrate is the bottom plate of the housing. All the power output points of the lifting module are directly connected to the transmitting coil module. The lifting module can drive the transmitting coil module to rise and fall relative to the opening. The flexible covering layer is connected to the housing and at least covers the opening. The flexible covering layer is a flame-retardant brushed fabric or a composite layer of intrinsically flame-retardant knitted brushed fabric and flexible film.

[0016] This application also provides an in-vehicle wireless charging device, which includes a mounting member and a wireless charger as described in any of the above claims. The mounting member is used to fix the in-vehicle wireless charging device to a vehicle body, and the wireless charger is mounted on the mounting member. The mounting member has an upwardly open receiving cavity for placing a device to be charged, and the transmitting end plane of the wireless charger is located in the bottom wall region of the receiving cavity.

[0017] As an optional implementation, the mounting component is a hollow mounting frame with a through opening running vertically through it. The wireless charger is installed at the opening at the bottom of the mounting frame, and the interior of the mounting frame and the top surface of the wireless charger together form the receiving cavity.

[0018] As an optional implementation, the vehicle-mounted wireless charging device further includes a separator integrally formed with the mounting component, the separator dividing the receiving cavity into a first charging area and a second charging area, and two wireless chargers are provided, with the first charging area and the second charging area each independently equipped with the wireless charger.

[0019] As an optional implementation, the vehicle-mounted wireless charging device further includes a flexible covering layer, which is connected to the mounting component or the housing of the wireless charger. The flexible covering layer covers at least the top surface of the wireless charger. The flexible covering layer is a flame-retardant brushed fabric or a composite layer of intrinsically flame-retardant knitted brushed fabric and flexible film.

[0020] Based on the above technical solution, this application has at least one of the following effects: (1) The combination design of inclined plane lifting and linkage mechanism is adopted. First, the horizontal motion in the X direction is converted into the vertical lifting motion of the connecting part through the inclined plane. Then, the lifting displacement is amplified through the linkage mechanism (ZQ=ZM>ZP), so that the small displacement of the power input point can drive the transmitting coil module to generate a larger lifting displacement, thereby achieving a larger lifting stroke in the limited height space, effectively reducing the thickness of the whole machine, and is particularly suitable for vehicle and other application scenarios where the height dimension is limited.

[0021] (2) The superposition of the two-stage transmission of inclined plane lifting and linkage displacement amplification can achieve a larger lifting amount under the same spatial constraints compared with single inclined plane lifting or single linkage lifting, and the space utilization rate is significantly improved.

[0022] (3) The linkage mechanism is smooth in transmission, without impact or jamming during movement, with smooth lifting and lowering, low noise, and good user experience; the multi-link is distributed along the circumference to form multi-point support, which makes the load more stable, with small deformation under force, and no jamming or abnormal noise during long-term reciprocating lifting and lowering, thus extending the service life.

[0023] (4) The support surface is provided with multiple positioning slots, which can accurately lock the multiple height positions of the transmitting coil module (lower than the opening, flush with the opening, higher than the opening) to meet different usage needs; the positioning slots have a self-locking function, so the transmitting coil module will not move on its own in the case of bumpy and shaking, ensuring charging stability.

[0024] (5) The lead screw and nut transmission is combined with the guide rail, which has high motion accuracy and can achieve millimeter-level precise adjustment. It also has mechanical self-locking characteristics and reliable positioning.

[0025] (6) The limiting convex wall and the supporting surface together form a guide groove, which, together with the circumferentially distributed guide parts, achieves double limiting, resulting in high lifting stability and is suitable for bumpy vehicle environments.

[0026] (7) The connecting parts are configured to make rolling contact with the inclined plane, which greatly reduces the motion resistance compared with sliding friction and reduces the power consumption of the whole machine. A micro low-power motor can be selected.

[0027] (8) The elastic element is configured to assist in descent. The lifting module can automatically descend without continuous external power input, which is energy-saving, environmentally friendly and low-noise. The first torsion spring can adjust the torque through a multi-hole design to adapt to different load requirements.

[0028] (9) The combination design of dual elastic elements (first elastic element + second elastic element) increases the descent driving force and ensures a smooth and reliable descent process.

[0029] (10) The four linkage mechanisms are arranged in pairs, with the connecting parts driven in the middle. The structure is compact, occupies little space, and has a reasonable layout. The power output points are distributed at intervals along the circumference to ensure that the launch end plane always maintains a horizontal attitude and ensures the alignment accuracy.

[0030] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0031] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of a wireless charger according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a wireless charger with a hidden cover or flexible covering layer according to an embodiment of this application. Figure 3 This is a schematic diagram of the structure of the second motion mechanism and the second guide member according to one embodiment of this application; Figure 4 This is a schematic diagram of the structure of the linkage module and the second guide member according to one embodiment of this application; Figure 5This is a schematic diagram of the lifting module and the X-axis motion module according to one embodiment of this application; Figure 6 This is a schematic diagram of the structure of a secondary linkage module and a first bracket according to an embodiment of this application; Figure 7 This is an exploded view of a portion of the structure of a wireless charger according to an embodiment of this application; Figure 8 This is a schematic diagram of the structure of a three-stage linkage module and a first support according to an embodiment of this application; Figure 9 This is a schematic diagram of the structure of the second bracket according to one embodiment of this application; Figure 10 This is a schematic diagram of the structure of a wireless charger according to an embodiment of this application; Figure 11 This is a schematic diagram of the structure of an in-vehicle wireless charging device according to an embodiment of this application; Figure 12 This is an exploded view of an embodiment of the in-vehicle wireless charging device of this application; Figure 13 for Figure 2 An exploded view of part of the structure.

[0032] Icon labels: Vehicle-mounted wireless charging device 1; Wireless charger 10; Shell 100; Box body 110; Base plate 111; Clearance space 1111; Fixing base 112; Box cover 120; Opening 121; First transmitting coil module 200; first bracket 210; first lug 211; second lug 212; vertical rib 213; Second transmitting coil module 300; second bracket 310; elastic claw 311; second transmitting coil 320; X-axis motion module 400; first power source 410; first lead screw 420; nut 430; first guide 440; sliding seat 450; limiting rib 451; Second motion mechanism 500; second power source 510; motion seat 520; plate portion 521; first protrusion 522; second protrusion 523; support surface 5231; limiting protrusion 5232; positioning groove 5234; slide rail 540; second lead screw 550; first limiting member 560; second limiting member 570; Second guide component 600; guide groove 610; Linkage mechanism 700; First link 710; Second link 720; Insertion hole 721; Power input point P; Power output point Q; First hinge point J1; Second hinge point J2; Third hinge point J3; Fourth hinge point J4; Connector 730; First elastic element 740; Second elastic element 750; Fixed rod 760; Rolling element 770; Third link 780; Flexible cover layer 800; Controller 900; Identification module 910; Control module 920; Mounting component 20; partition component 21. Detailed Implementation

[0033] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0034] In the description of this application, it should be understood that the orientation descriptions, such as up, down, X, Y, Z, etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.

[0035] In the description of this application, "multiple" refers to two or more. The use of "first" and "second" is for the purpose of distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or the order in which the technical features are indicated.

[0036] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0037] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0038] Reference Figures 1 to 12 This application provides a wireless charger 10 and an in-vehicle wireless charging device 1.

[0039] The wireless charger 10 is used to wirelessly charge a device (not shown in the figure, also referred to as the receiver). The receiving coil inside the device has a receiving end plane located at its bottom. The device can be a magnetic charging device with an integrated magnetic ring, or a non-magnetic charging device without a magnetic ring. The detailed technical principles of how the wireless charger 10 wirelessly charges the device are known techniques and will not be elaborated here.

[0040] See Figures 1 to 5 and Figure 7 The wireless charger 10 includes a flat rectangular housing 100 and a transmitting coil module (200, 300) mounted on the housing 100. For ease of description, unless otherwise specified, the transmitting coil module (200, 300) is assumed to be either the first transmitting coil module 200 or the second transmitting coil module 300.

[0041] Specifically, refer to Figure 1 and Figure 7 The housing 100 includes a box body 110 and a box cover 120. The box body 110 includes a base plate 111, and the box cover 120 covers the box body 110. The transmitting coil module (200, 300) includes a bracket (210, 310) and a transmitting coil, with the transmitting coil mounted on the bracket (210, 310). The transmitting coil module (200, 300) has a transmitting end plane located at its top.

[0042] The transmitting coil of the first transmitting coil module 200 (i.e., the first transmitting coil) is not shown in this application, but the transmitting coil of the second transmitting coil module 300 (i.e., the second transmitting coil 320) has been shown in this application.

[0043] It should be noted that the housing 100 can also be other shapes, such as a flat cylinder or a flat cube; the housing 100 can also be other types, such as the housing 100 including a box body 110 and a flexible covering layer 800 covering the access port of the box body 110 (details are described below), or the housing 100 including a substrate 111 and a cover 120 covering the substrate 111. No specific limitations are made here.

[0044] The transmitting coil modules (200, 300) may or may not have a magnetic attraction function. When the transmitting coil modules (200, 300) have a magnetic attraction function, they also include a magnetic attraction module (not shown in the figure). The magnetic attraction module is arranged around the periphery of the transmitting coil, and the magnetic attraction module is used to achieve magnetic attraction and positioning between the transmitting end and the receiving end. The detailed technical principles of the magnetic transmitting coil modules (200, 300) are known techniques and will not be elaborated in this application.

[0045] The wireless charger 10 provided in this application also includes at least one of the following: an X-axis motion module 400, a lifting module, a Y-axis adjustment mechanism, and an anti-slip structure. These are described in detail below.

[0046]

X-axis motion module 400

[0047] When the device to be charged is placed on the wireless charger 10 by the user, the X-axis motion module 400 adjusts the X-axis position of the transmitting coil module (200, 300) to reduce the misalignment between the transmitting coil and the receiving coil, and even put the two coils in the optimal coupling position. This improves the wireless charging transmission efficiency, eliminates the power loss caused by the misalignment of the two coils, and reduces the eddy current heating generated by the misalignment coupling of the two coils. This reduces the problem of overheating of the wireless charger 10 and the mobile phone, extends the service life of the wireless charger 10 and the mobile phone, and avoids the risk of overheating and fire.

[0048] In this application, the optimal coupling position of the transmitting coil and the receiving coil means that the receiving end plane is / / the transmitting end plane, the centers of the horizontal projections of the transmitting coil and the receiving coil are aligned, and the vertical gap between the two maintains the design standard spacing.

[0049] For example, when the device to be charged is placed arbitrarily by the user in the charging area of ​​the wireless charger 10 of this application, the wireless charger 10 can identify the deviation value between the transmitting coil and the receiving coil by detecting the coil coupling signal, and adjust the position of the transmitting coil module (200, 300) in the X direction according to the deviation value.

[0050] In some embodiments, see Figure 2 and Figure 5 as well as Figure 7 The first motion mechanism includes a first power source 410, a first lead screw 420, and a nut 430. The first power source 410 and the first lead screw 420 are mounted on the housing 100. The first power source 410 is connected to the first lead screw 420 through a transmission. The first lead screw 420 is connected to the nut 430 through a threaded transmission. The bracket (210, 310) is fixedly connected to the nut 430. The first power source 410 can drive the first lead screw 420 to rotate, and through the threaded pair, drive the nut 430 and the bracket (210, 310) to move as a whole relative to the housing 100 in the X direction.

[0051] The X-axis motion module 400 employs a lead screw and nut structure. When the wireless charger 10 experiences minor bumps or vibrations (such as in a vehicle or when carried by an athlete), the nut 430 will not easily move. Simultaneously, the lead screw and nut structure enables precise linear micro-adjustment down to the 1mm level, providing high positional accuracy suitable for the wireless charger 10.

[0052] It should be noted that the X-axis motion module 400 can also be a cylinder, a rack and pinion mechanism, or a scissor lift assembly, as long as the X-axis motion module 400 can drive the bracket (210, 310) to move in the X direction. No specific restrictions are imposed here.

[0053] In some embodiments, see Figure 5 and Figure 7 The bracket (210, 310) and the nut 430 are detachably fixed together, which facilitates disassembly and maintenance.

[0054] For the first example, see Figure 5 and Figure 7 The connection between the bracket (210, 310) and the nut 430 is a flexible snap-fit ​​as described below.

[0055] In the second example, the bracket (210, 310) has a first serration, and the nut 430 has a second serration, with the first serration and the second serration engaging in abutment.

[0056] It should be noted that the bracket (210, 310) and the nut 430 can also be fixedly connected in a non-detachable manner. For example, the bracket (210, 310) and the nut 430 can be integrally molded (see reference). Figure 2 and Figure 9 ).

[0057] In some embodiments, see Figure 2 , Figure 5 , Figure 7 and Figure 9 The X-axis motion module 400 also includes a first guide member 440, which is arranged parallel to the first lead screw 420. The first guide member 440 is installed on the housing 100, and the bracket (210, 310) slides with the first guide member 440 to improve the motion stability of the transmitting coil module (200, 300) in the X direction.

[0058] In some embodiments, see Figure 2 , Figure 5 and Figure 7The X-axis motion module 400 also includes a sliding seat 450, which is slidably sleeved on the outer periphery of the first guide member 440. This facilitates the detachable fixed connection between the bracket (210, 310) and the X-axis guide sliding structure, and simplifies the mold structure used to manufacture the bracket (210, 310).

[0059] It should be noted that the sliding base 450 and the bracket (210, 310) can also be fixedly connected in a non-detachable manner. For example, the bracket (210, 310) and the sliding base 450 are integrally molded parts (see reference). Figure 9 ).

[0060] In some embodiments, see Figure 9 To reduce sliding friction, the inner surface of the sliding seat 450 is provided with a groove structure.

[0061] In some embodiments, the first lead screw 420 and the first guide member 440 are located on both sides of the housing 100 in the Y direction. The lead screw nut provides translational force and the X-direction guiding sliding structure forms a double-sided support limit. The two ends of the bracket (210, 310) are synchronously fixed with the nut member 430 and the sliding seat 450, respectively. During the translation process, there will be no left or right deflection or up or down tilting. The transmitting end plane of the transmitting coil module (200, 300) always maintains a horizontal attitude to ensure alignment accuracy.

[0062] In some embodiments, see Figure 7 The bracket (210,310) is integrally formed and has elastic claws 311. Both sides of the bracket (210,310) are provided with elastic claws 311. The elastic claws 311 are C-shaped. The elastic claws 311 are clamped and engaged with the outer wall of the nut 430 and the sliding seat 450 to achieve limiting and fixing.

[0063] The elastic claws 311 are a first elastic claw located on one side and a second elastic claw located on the other side. During assembly, the elastic claws 311 of the bracket (210, 310) are aligned with the nut 430 and the sliding seat 450. Then, simply press down on the bracket (210, 310). The first elastic claw clamps the nut 430, and the second elastic claw clamps the sliding seat 450. The clamping and limiting are completed by the elastic rebound of the elastic claws 311 themselves, without the need for any screws. Compared with the threaded fixing method, the snap-fit ​​fixing of this application simplifies the component assembly process, shortens the assembly time of a single product, and is suitable for automated production line mass production. At the same time, it helps to improve the connection versatility between the bracket (210, 310) and the nut 430 / sliding seat 450. The components are highly modular, and the disassembly and assembly are easy during maintenance and replacement, which is beneficial for later after-sales maintenance. The snap-fit ​​structure is detachable, so when repairing or replacing the transmitting coil module (200, 300), there is no need to disassemble the first guide 440 and the first lead screw 420. The disassembly can be completed by directly pulling out the bracket (210, 310). The disassembly and assembly are convenient, the parts can be replaced individually, the modularity is high, and the parts are highly interchangeable.

[0064] The elastic claw 311 has radial elastic buffering capability. When the wireless charger 10 is subjected to slight bumps or shaking, the elastic claw 311 can slightly buffer and absorb shocks, avoiding hard contact and wear between the bracket (210, 310) and the nut 430 / sliding seat 450, thus extending the product's service life and adapting to bumpy usage environments.

[0065] In some embodiments, see Figure 2 If the bracket (210, 310) has only one of the first elastic claw and the second elastic claw, the transmitting coil module (200, 300) will not be easily lost or confused during maintenance.

[0066] It should be noted that the elastic claw 311 can also be a separate structure from the bracket (210, 310), and the two are fixedly connected by fasteners; the number of the first elastic claw can be 1, 2, 3 or 4, etc., and the number of the second elastic claw can be 1, 2, 3 or 4, etc.

[0067] In some embodiments, see Figure 2 and Figure 7At least one of the sliding seat 450 and the nut 430 has an annular limiting rib 451 on its outer wall. The elastic claw 311 abuts against the limiting rib 451 in the X direction to prevent the elastic claw 311 from moving in the X direction and to prevent the elastic claw 311 from disengaging from the sliding seat 450 or the nut 430 in the X direction. When the wireless charger 10 is subjected to minor bumps or shaking, the minor bumps or shaking will not cause the bracket (210, 310) to move relative to the sliding seat 450 or the nut 430 in the X direction, thereby improving the wireless charging transmission efficiency. It can be understood that an annular limiting groove can also be provided on the outer wall of the sliding seat 450 / nut 430, and the elastic claw 311 can be engaged in the limiting groove.

[0068] In some embodiments, see Figure 2 , Figure 5 and Figure 7 There are M nut components 430, where M ≥ 2, and these M nut components 430 are spaced apart along the axial direction of the lead screw. There are N sliding seats 450, where N ≥ 2, and these N sliding seats 450 are spaced apart along the axial direction of the guide post. There are 2M first elastic claws and 2N second elastic claws. Each nut component corresponds to two first elastic claws, and the limiting rib of the nut component is located in the middle of these two first elastic claws. Each sliding seat corresponds to two second elastic claws, and the limiting rib of the sliding seat is located in the middle of these two second elastic claws. This multi-point support distributes the weight of the transmitting coil module (200, 300), avoiding deformation due to single-point stress. Long-term reciprocating movement is less prone to jamming or abnormal noise, ensuring smooth and stable transmission operation.

[0069] It should be noted that the number of nuts 430 can also be 1, 3 or 4, and the number of sliding seats 450 can also be 1, 3 or 4, and the total number of elastic claws 311 is not equal to 2M + 2N.

[0070] In some embodiments, the first power source 410 is a DC servo motor, which offers high control precision and facilitates the elimination of the light-sensing detection device in the wireless charger 10. It should be noted that the first power source 410 can also be a stepper motor or a pneumatic motor, etc., and no specific limitation is made here.

[0071] Lifting Module In some embodiments, see Figures 1 to 5The wireless charger 10 also includes a lifting module installed inside the housing 100. The top surface of the housing 100 has an opening 121 for the vertical extension and retraction of the transmitting coil modules (200, 300). The transmitting coil modules (200, 300) are disposed inside the housing 100. At least part of the lifting module is located directly below the transmitting coil modules (200, 300). The transmitting coil modules (200, 300) are connected to the lifting module. The transmitting coil modules (200, 300) can be raised and lowered relative to the housing 100 by means of the lifting module, thereby changing the height of the transmitting end plane.

[0072] Currently, most devices to be charged (such as smartphones) have a certain thickness (defined as lens thickness T) on the back of their lenses. The bottom surface of the lens is not coplanar with the receiving end plane, meaning the back surface is uneven. When the device to be charged is placed on a fixed wireless charger, due to the supporting effect of the protruding lens, the plane where the receiving coil is located cannot be kept parallel to the plane where the transmitting coil is located. There is a tilt and misalignment between the two coils, which seriously affects the coil coupling efficiency and charging power.

[0073] The wireless charger 10 of this application incorporates a lifting module, allowing the transmitting coil modules (200, 300) to be raised and lowered relative to the housing 100. When the lifting module is extended, the transmitting end plane is higher than the opening 121 (i.e., the transmitting end plane is higher than the top surface of the housing 100), and a height difference H is formed between the two. This height difference H is greater than or equal to the lens thickness T. At this time, the receiving end plane is in a horizontally placed state, thereby reducing the misalignment between the transmitting and receiving coils and even placing the two coils in the optimal coupling position. This effectively solves the problem of misalignment between the two coils caused by the protruding lens and improves the wireless charging transmission efficiency.

[0074] In some embodiments, see Figures 2 to 5 and Figure 7 The lifting module includes at least two second guide members 600, which extend vertically and are spaced apart circumferentially around the transmitting coil modules (200, 300). The second guide members 600 slide against the transmitting coil modules (200, 300) to improve the lifting stability of the transmitting coil modules (200, 300). This sliding engagement constrains the lifting of the transmitting coil modules (200, 300), enabling them to move along a predetermined trajectory and improving motion accuracy and reliability. The number of second guide members 600 can be two, three, four, or five; the at least two second guide members 600 can be evenly or non-evenly distributed along the circumference of the transmitting coil modules (200, 300), and no specific limitation is imposed here.

[0075] For the first example, see Figures 2 to 4 and Figure 5 The second guide member 600 is a guide cylinder. The transmitting coil module (200, 300) is provided with a first lug 211. The first lug 211 has a through hole and is sleeved on the outer periphery of the guide cylinder through the through hole.

[0076] For the second example, see Figure 7 The second guide 600 is a limiting post, which has a guide groove 610 extending in the vertical direction. The outer periphery of the transmitting coil module (200, 300) is provided with vertical ribs 213, which are inserted into the guide grooves 610 of the corresponding limiting post.

[0077] See Figures 2 to 8 The lifting mechanism of the lifting module provided in this application includes at least one of a second motion mechanism 500 and a linkage mechanism 700. It is understood that the lifting mechanism of the lifting module may also be a cylinder, a rack and pinion mechanism, or a scissor lift assembly, etc. The second motion mechanism 500 and the linkage mechanism 700 are described in detail below.

[0078] Second Sports Organization 500 In some embodiments, see Figures 2 to 8 The second motion mechanism 500 includes a second power source 510 and a motion seat 520. The second power source 510 is drively connected to the motion seat 520 to drive the motion seat 520 to move in the X direction. The motion seat 520 has a support surface 5231, which includes an inclined surface that slopes upwards in the X direction, and the inclined surface is at least partially located directly below the transmitting coil modules (200, 300). The support surface 5231 directly or indirectly supports the transmitting coil modules (200, 300). When the second power source 510 drives the motion seat 520 to move in the X direction, the motion seat 520 causes the transmitting coil modules (200, 300) to move up and down relative to the motion seat 520 via the inclined surface.

[0079] Specifically, the support surface 5231 and the bracket (210, 310) of the transmitting coil module (200, 300) can be in direct contact, that is, the bracket (210, 310) moves directly on the support surface 5231, or they can be in non-contact but connected by transmission (see [reference]). Figure 7 ).

[0080] The motion seat 520 is configured with a support surface 5231 that forms a high-low tilt structure along the X direction. When the second power source 510 drives the motion seat 520 to move along the X direction, the motion seat 520 drives the transmitting coil module (200, 300) to rise and fall, thereby changing the height of the transmitting end plane of the transmitting coil module (200, 300). This achieves a better coupling position between the transmitting coil and the receiving coil, effectively solving the alignment misalignment problem caused by the protruding lens and improving the wireless charging transmission efficiency.

[0081] In addition, this application adopts the principle of ramp lifting, which transforms the horizontal movement in the X direction into vertical lifting movement, effectively reducing the height dimension of the lifting mechanism and making the whole machine thin, which is particularly suitable for application scenarios with limited space.

[0082] In some embodiments, see Figure 3 , Figure 5 and Figure 7 The motion seat 520 has upwardly protruding limiting protrusions 5232 on opposite sides of the support surface 5231 in the Y direction. The support surface 5231 and the two limiting protrusions 5232 enclose a guide groove. The guide groove is used to accommodate the partial structure of the moving part on the motion seat 520 and guide the moving part to move in an directional manner. The moving part is in direct contact with the support surface 5231 and can move relative to the support surface 5231.

[0083] By using the limiting protrusion 5232 and the support surface 5231 to form a guide groove, the local structure of the moving part on the motion seat 520 is limited and guided to move in an oriented manner. This reduces the risk of the moving part deviating from the predetermined path (or even detaching from the support surface 5231) and improves the stability of lifting.

[0084] In some embodiments, the lifting module includes both the aforementioned guide groove and the aforementioned at least two second guide members 600, achieving dual limiting in different directions, making the lifting of the transmitting coil module (200, 300) more stable, and enabling the wireless charger 10 to be applied in a bumpy vehicle environment.

[0085] In some embodiments, see Figure 3 , Figure 5 and Figure 7 Two support surfaces 5231 are provided, arranged parallel to each other along the Y direction. These two support surfaces 5231 form a multi-point support, resulting in more stable load bearing and less deformation under stress. This ensures that the second motion mechanism 500 operates without jamming or abnormal noise during long-term reciprocating lifting and lowering, extending the service life of the motion seat 520 and the transmitting coil modules (200, 300). Simultaneously, the increased contact area between the moving parts on the motion seat 520 and the motion seat 520 improves the lifting stability and load-bearing capacity of the transmitting coil modules (200, 300). It is understood that the number of support surfaces 5231 can also be one, three, or four, etc.

[0086] In some embodiments, the moving element is a rolling element on the bracket (210, 310), which rolls on the support surface 5231 of the motion seat 520. The bracket (210, 310) is equipped with the rolling element, forming rolling contact with the inclined support surface 5231. Compared to sliding friction, this significantly reduces motion resistance, lowers overall power consumption, and requires less torque from the motor, allowing for the use of a miniature, low-power motor. Furthermore, the bracket (210, 310) may mount two rolling elements, each corresponding to one of the two support surfaces 5231. The rolling elements may be rollers or balls, etc.

[0087] It should be noted that the moving component can also be a wedge block on the support (210, 310). The wedge block can slide on the inclined support surface 5231, and the inclined surface of the wedge block abuts against the inclined support surface 5231. Such a structure can also enable the moving seat 520 to drive the support (210, 310) to rise and fall. The moving component can also be a transmission component (such as the connector 730 described below) located on the transmission path between the moving seat 520 and the support (210, 310). As long as the second moving mechanism 500 can drive the transmitting coil module (200, 300) to rise and fall, no specific restrictions are made here.

[0088] In some embodiments, see Figure 2 , Figure 3 , Figure 5 and Figures 7-8 The second motion mechanism 500 also includes a slide rail 540, which extends along the X direction and is located between two support surfaces 5231. The motion seat 520 is slidably engaged with the slide rail 540 and can reciprocate along the slide rail 540 in the X direction. The motion seat 520, in conjunction with the slide rail 540, makes the reciprocating motion of the motion seat 520 in the X direction more stable, improves the lifting stability of the transmitting coil modules (200, 300), and extends the service life of the lifting module.

[0089] In some embodiments, see Figure 2 , Figure 3 and Figure 5 The second motion mechanism 500 also includes a second lead screw 550, which extends along the X direction. A second power source 510 is connected to the second lead screw 550 to drive its rotation. The second lead screw 550 is threadedly engaged with the motion seat 520 to drive it to reciprocate in the X direction. The second lead screw 550 is located between two support surfaces 5231. The lifting module adopts a lead screw and nut structure. When the lifting module experiences minor bumps or swaying, the motion seat 520 will not easily move; simultaneously, it can achieve precise linear micro-adjustment at the 1mm level, providing high position adjustment accuracy, suitable for the wireless charger 10.

[0090] In some embodiments, see Figure 3 The second motion mechanism 500 also includes a first limiting member 560 and a second limiting member 570. The first limiting member 560 and the second limiting member 570 are arranged at intervals along the X direction and are respectively fixed on both sides of the motion seat 520 in the X direction to limit the travel of the motion seat 520 in the X direction and prevent overtravel.

[0091] In some embodiments, see Figure 2 , Figure 3 , Figure 5 and Figures 7-8 The motion seat 520 includes an integrally formed plate portion 521, a first protrusion 522, and two second protrusions 523. The second protrusions 523 are provided with a support surface 5231. The first protrusion 522 is threadedly connected to a second lead screw 550. Both the first and second protrusions 522 and 523 are located above the plate portion 521 and are fixedly connected to it. A slide rail 540 is located below the plate portion 521 and slides in cooperation with it. The second lead screw 550 and the slide rail 540 are arranged between the two second protrusions 523, resulting in a compact structure and reduced space occupation by the lifting mechanism. In some embodiments, the second protrusions 523 are provided with the aforementioned guide groove.

[0092] In some embodiments, see Figure 3 The support surface 5231 has at least two positioning slots 5234, with the openings of the positioning slots 5234 facing upwards. The positions of each positioning slot 5234 in the X direction and the vertical direction are different. The positioning slots 5234 provide a certain degree of upper limit for the bottom of the moving parts on the motion seat 520. When the lifting mechanism is subjected to slight bumps or swaying (such as in a vehicle or when carried by an athlete), the moving parts on the motion seat 520 will not easily move, ensuring charging stability.

[0093] In some embodiments, see Figure 3 There are three positioning slots 5234, which correspond to three height levels of the transmitting end plane of the transmitting coil module (200, 300): below opening 121, flush with opening 121, and above opening 121. The three positioning slots 5234 precisely lock the transmitting coil module (200, 300) at these three heights: the transmitting end plane is below opening 121, flush with opening 121, and above opening 121. When the transmitting end plane is below opening 121, it facilitates hiding the transmitting coil module (200, 300) or avoids interfering with the movement of other components; when the transmitting end plane is flush with opening 121, the top surface of the wireless charger 10 is flat and aesthetically pleasing; when the transmitting end plane is above opening 121, it effectively solves the alignment misalignment problem caused by the protruding lens.

[0094] In some embodiments, see Figure 3The support surface 5231 between two adjacent positioning grooves 5234 is an inclined surface, which is smoothly connected to the positioning groove 5234 to ensure that the movement of the moving parts on the motion seat 520 is smooth on the support surface 5231.

[0095] In some embodiments, the longitudinal section of the positioning groove 5234 is an arc with a central angle of less than 180°, which facilitates the movement of the moving parts on the motion seat 520 to easily enter / leave the positioning groove 5234 and improves its smoothness of movement.

[0096] In some embodiments, see Figure 2 and Figure 13 The X-direction forms an angle with the centerline of the housing 100 and is not parallel to it, which helps to increase the stroke of the motion seat 520, reduce the size of the housing 100 in the X-direction, and further optimize the spatial layout.

[0097] Linkage mechanism 700 In some embodiments, see Figure 2 and Figures 4 to 8 The linkage mechanism 700 supports the transmitting coil modules (200, 300). The linkage mechanism 700 has a power input point P and a power output point Q. The power input point P is connected to the drive component to input power to the linkage mechanism 700, causing the linkage mechanism 700 to move. The power output point Q is connected to the bracket (210, 310) of the transmitting coil modules (200, 300) to drive the transmitting coil modules (200, 300) to move.

[0098] See Figure 2 and Figures 4 to 8 The linkage mechanism 700 includes a first link 710 and a second link 720. The first link 710 is hinged to the fixed seat 112 at a first hinge point J1, and the first link 710 can only swing around the first hinge point J1. The first link 720 is hinged to the tail end of the first link 710 at a second hinge point J2, and the tail end of the second link 720 has a third hinge point J3 and is connected to the power output point Q.

[0099] When the driving component drives the power input point P to move up and down, the linkage mechanism 700 drives the transmitting coil module (200, 300) to move up and down through the power output point Q.

[0100] The displacement of the power output point Q in the vertical direction is ZQ, and its displacement in the X direction is XQ. The displacement of the transmitting coil module (200, 300) in the vertical direction is ZM, and its displacement in the X direction is XM. The displacement of the power input point P in the vertical direction is ZP, and its displacement in the X direction is XP.

[0101] The transmitting coil module (200, 300) is constrained by the second guide 600 (i.e., XM=0), which is referred to as the first constraint.

[0102] The power input point P is located on the second link 720 and between the second hinge point J2 and the third hinge point J3, and is called the second constraint.

[0103] The power output point Q and the second hinge point J2 are located on both sides of the power input point P in the X direction. The power output point Q is always higher than the power input point P, which is called the third constraint.

[0104] Under the combined action of the first, second, and third constraints, the first hinge point J1, the power input point P, and the power output point Q are located on the same straight line, which is the hypotenuse of a right triangle. The first hinge point J1 is the lower vertex of the right triangle, and the power output point Q is the upper vertex of the right triangle. Thus, the linkage mechanism 700 can achieve ZQ=ZM>ZP>0, that is, the linkage mechanism 700 amplifies the lifting displacement and reduces the overall thickness. In other words, the lifting module of this application has a small dimension in the height direction and is suitable for scenarios where the height dimension of the lifting module is limited.

[0105] In some embodiments, see Figures 5 to 7 The linkage mechanism 700 is a two-stage linkage mechanism. The power output point Q of this two-stage linkage mechanism is the third hinge point J3. The tail end of the second link 720 is pivotally hinged and slidingly connected in the X direction to the transmitting coil module (200, 300) at the third hinge point J3, i.e., ZQ=ZM>ZP, XQ>0. The two-stage linkage mechanism has a small number of transmission stages and a simple structure, but its amplification effect on lifting displacement is generally limited.

[0106] Specifically, the second lug 212 at the bottom end of the bracket (210, 310) is provided with a strip-shaped slide extending in the X direction. Limiting walls are provided on both sides of the strip-shaped slide in the X direction to limit the size of XQ. The strip-shaped slide penetrates the bracket (210, 310) in the Y direction. One end of the pivot (not shown in the figure) is inserted into the strip-shaped slide and has a Z-direction clearance fit with the strip-shaped channel. The tail end of the second link 720 is slidably connected to the strip-shaped channel through this pivot, thereby enabling the second link 720 to rotate relative to the bracket (210, 310) around the third hinge point J3 while also sliding relative to the bracket (210, 310) in the X direction. In some embodiments, both ends of the pivot are provided with strip-shaped slides, and the two ends of the pivot are respectively inserted into the corresponding strip-shaped channels to improve motion stability and connection strength. It is understood that the strip-shaped slide can also be located at the tail end of the second link 720.

[0107] In some embodiments, see Figure 2 , Figure 4 and Figure 8The linkage mechanism 700 is a three-stage linkage mechanism. It has a third link 780, the first end of which is hinged to the tail end of the second link 720 at a third hinge point J3. The tail end of the third link 780 has a fourth hinge point J4, which is the power output point Q. The third link 780 is also hinged to the transmitting coil module (200, 300) at the fourth hinge point J4. The displacement of the fourth hinge point J4 in the vertical direction is ZJ4, and the displacement in the X direction is XJ4, where ZJ4 = ZQ = ZM > 0, and XJ4 = 0. The three-stage linkage mechanism has more transmission stages, resulting in a greater amplification effect on lifting and lowering displacement compared to a two-stage linkage mechanism.

[0108] It is understood that the linkage mechanism 700 can also be a four-stage linkage mechanism, a five-stage linkage mechanism, or a six-stage linkage mechanism; the fixed seat 112 that is hinged to the first end of the first linkage 710 can be a base plate installed on the housing 100 (the two can be an integral structure or a detachably fixed connection), or it can be located on the outside of the housing 100 of the wireless charger 10, without any specific restrictions.

[0109] In some embodiments, see Figures 2 to 8 In order to further reduce the height dimension of the linkage mechanism 700, a clearance space 1111 is provided on the upper surface of the substrate 111. The clearance space 1111 is located near the fixed seat 112, so that the substrate 111 does not interfere with the tail end movement of the first linkage.

[0110] Linkage module In some embodiments, see Figures 2 to 8 There are four linkage mechanisms 700 with the same number of stages. The four linkage mechanisms 700 are distributed at intervals along the Y direction. All power output points Q are at the same height and are distributed at intervals along the circumference of the transmitting coil module (200, 300). All power input points P are fixedly connected to the connector 730. The connector 730 extends along the Y direction and is connected to the drive component. The four linkage mechanisms 700 and the connector 730 form a linkage module.

[0111] When the driving component (such as a cylinder or the motion seat 520 in the previous embodiment) drives the connecting member 730 to move up and down, the connecting member 730 drives the four second connecting rods 720 to rise and fall synchronously. The connecting rod module can drive the transmitting coil module (200, 300) to rise and fall relative to the opening 121. The connecting rod module forms a multi-point support, which makes the load-bearing more stable and the deformation under force less. In this way, the connecting rod module does not jam or make abnormal noises during long-term reciprocating lifting and lowering, thus extending the service life of the connecting rod module and the transmitting coil module (200, 300). At the same time, the increased contact area between the connecting rod module and the transmitting coil module (200, 300) improves the lifting stability and load-bearing capacity of the transmitting coil module (200, 300). The connection points (i.e., support points / power output points Q) between the linkage module and the bracket (210, 310) are distributed circumferentially along the transmitting coil module (200, 300) to ensure that the transmitting end plane of the transmitting coil module (200, 300) is in a horizontal position, thereby avoiding the phenomenon of misalignment of the two coils caused by the transmitting end plane.

[0112] It should be noted that the number of linkage mechanisms 700 in the linkage module can also be two, three, five, or six, etc.; the power input points P of multiple linkage mechanisms 700 can also not be located in a straight line (the connecting member 730 is of a shape adapted to it). For example, multiple power input points P are distributed at intervals along the circumference of the transmitting coil module (200, 300), and the connecting member 730 is in a cross shape; the number of stages of multiple linkage mechanisms 700 can also be different (e.g., a combination of 2 stages + 3 stages); multiple power output points Q can also not be at the same height; as long as the linkage module can drive the transmitting coil module (200, 300) to rise and fall and the levelness of the transmitting end plane meets the design standards, no specific restrictions are imposed here.

[0113] In some embodiments, see Figures 2 to 8 The four linkage mechanisms 700 are arranged in pairs to form two sets of linkage mechanisms. The two sets of linkage mechanisms are located at both ends of the connector 730. The middle section of the connector 730 is used for transmission connection with the drive component. That is, the drive component is located in the middle of the two sets of linkage mechanisms 700, which is compact and reduces the area occupied.

[0114] In some embodiments, see Figures 2 to 8 Each linkage mechanism also includes a first elastic element 740, and the connecting member 730 descends under the drive of the first elastic element 740. The linkage module can automatically descend without external power input, which is environmentally friendly and produces low noise.

[0115] In some embodiments, see Figures 2 to 8The first elastic element 740 is a first torsion spring. At least one second connecting rod 720 is provided with a plurality of insertion holes 721. The plurality of insertion holes 721 are distributed circumferentially around the connector 730. The first elastic element is sleeved on the outer periphery of the axial end of the connector 730. One free end of the first torsion spring can be selectively inserted into one of the plurality of insertion holes 721, and the other free end is fixedly connected to the adjacent second connecting rod 720. The torque of the first torsion spring can be adjusted by selecting different insertion holes, and it has a wide range of applications.

[0116] In some embodiments, see Figures 2 to 8 The linkage module also includes a second elastic element 750, and the connecting member 730 descends under the drive of the second elastic element 750. The linkage module can automatically descend without external power input, making it environmentally friendly and quiet. Specifically, the fixed rod 760 is suspended relative to the housing 100 and fixedly connected to it. The second elastic element 750 is a second torsion spring, which is sleeved on the outer periphery of the fixed rod 760. One end of the second elastic element 750 is fixedly connected to the housing 100, and the other end elastically abuts against the middle section of the connecting member 730.

[0117] In some embodiments, see Figures 2 to 8 The linkage module includes both the first elastic element 740 and the second elastic element 750, thereby increasing the descent force applied to the connector 730 and ensuring a smooth and reliable descent process.

[0118] It should be noted that the first elastic element 740 and the second elastic element 750 can also be tension springs or compression springs, with one end of the tension spring or compression spring connected to the bracket and the other end connected to the housing.

[0119] In some embodiments, see Figures 2 to 8 The lifting module includes the second motion mechanism 500 and the linkage module from the previous embodiment. The driving component connected to the connecting member 730 is the motion seat 520, and the connecting member 730 is the moving component on the motion seat 520. This lifting module has a height dimension equal to that of the linkage module, making it suitable for scenarios where the height dimension of the lifting module is more limited.

[0120] In some embodiments, see Figures 2 to 8 The connecting member 730 is equipped with a rolling element 770, which rolls on the support surface 5231 of the motion seat 520. The connecting member 730, fitted with the rolling element 770, forms rolling contact with the inclined support surface 5231, significantly reducing motion resistance compared to sliding friction, lowering overall power consumption, and requiring less torque from the motor, allowing for the use of a miniature, low-power motor. Furthermore, the connecting member 730 is equipped with two rolling elements 770, each corresponding to one of the two support surfaces 5231. The rolling element 770 can be a roller or a ball bearing, etc.

[0121] It should be noted that a wedge block can also be set on the connector 730. The wedge block can slide on the ramp support surface 5231. The inclined surface of the wedge block abuts against the ramp support surface 5231. This structure can also enable the motion seat 520 to drive the connector 730 to rise and fall. The drive component that is connected to the connector 730 can also be a cylinder, gear rack or scissor lift assembly, etc., as long as the drive component can drive the connector 730 to rise and fall. No specific restrictions are made here.

[0122] In some embodiments, the second power source 510 is a DC servo motor, which has high control precision and is beneficial for eliminating the need for the light-sensing detection device of the wireless charger 10.

[0123] It should be noted that the second power source 510 can also be a stepper motor or a pneumatic motor, etc.

[0124] In some embodiments, when the device to be charged is fully charged, the lifting module is retracted so that the user does not feel the height difference H when taking the phone, thus improving the user experience.

[0125]

Y-axis adjustment mechanism

[0126] In some embodiments, the bracket (210, 310) has an open-facing receiving groove, the intermediate plate is at least partially located in the receiving groove and there is a Y-direction gap between the receiving groove and the intermediate plate, the intermediate plate is slidably disposed on the bracket (210, 310), the bracket (210, 310) has a through hole, one end of the threaded member passes through the through hole and is threadedly connected to the intermediate plate, and the other end of the threaded member is located outside the housing 100. The position of the transmitting coil in the Y direction can be adjusted by rotating the threaded member.

[0127] It should be noted that the adjustment mechanism for adjusting the position of the transmitting coil in the Y direction can also be of other forms, such as a rack and pinion or a scissor lift assembly.

[0128]

Anti-slip structure

[0129] Anti-slip textured layer In some embodiments, the housing 100 includes a top plate, the top surface of which is provided with an anti-slip textured layer (not shown in the figure). The anti-slip textured layer can increase the friction between the wireless charger 10 and the device to be charged, making it less likely for the device to slide or shift, thus improving the stability of the device placement. Specifically, the anti-slip textured layer is a concave-convex structure on the top surface of the top plate or an array of protrusions on the top surface of the top plate, etc.

[0130] Flexible cover layer 800 In some embodiments, see Figure 12 The top surface of the housing 100 is provided with a flexible covering layer 800, which is a composite layer of flame-retardant brushed fabric, thin silicone leather, or intrinsically flame-retardant knitted brushed fabric and flexible film. The flexible covering layer 800 increases the friction of the contact surface, provides anti-slip positioning, buffers collisions and scratches, has electrical insulation and splash-proof capabilities, and can flexibly deform with the moving mechanism without interfering with its normal operation, thus extending the device's lifespan. When the wireless charger 10 is used in an automotive setting, minor bumps or swaying of the vehicle will not cause the device to be charged to move relative to the transmitting coil modules (200, 300), thereby improving the wireless charging transmission efficiency.

[0131] The flame-retardant flexible covering layer 800 is made of a composite material including flame-retardant brushed fabric and silicone leather. It possesses flame-retardant and wear-resistant properties, and can block high-temperature conduction when the coil heats up, reducing the risk of fire. It is suitable for use in the high-temperature, enclosed environment of a vehicle. For example, the flexible covering layer 800 is an inherently flame-retardant knitted brushed fabric. This fabric uses inherently flame-retardant chemical fibers as raw materials, knitted to form the base, and then brushed to form a dense nap on the surface, giving it flame-retardant properties. For another example, the flexible covering layer 800 is a composite layer of inherently flame-retardant knitted brushed fabric and a flexible film. The bottom layer is an inherently flame-retardant knitted brushed fabric, and the surface layer is a composite ultra-thin waterproof flexible film. It retains the elasticity, anti-slip, and flame-retardant properties of the knitted brushed fabric while improving its waterproof and stain-resistant capabilities. Flame-retardant fabrics applicable to this application include, for example, those shown in Chinese patents CN223657750U, CN209700030U, CN121700575A, CN204715109U or CN116905166A, which are incorporated herein by reference.

[0132] In some embodiments, see Figure 12 The flexible cover layer 800 at least completely covers the opening 121 of the housing 100 for the raising and lowering of the transmitting coil modules (200, 300). The flexible cover layer 800 covers the opening 121 and has the functions of aesthetic enhancement, dust protection, and prevention of foreign object intrusion.

[0133] In some embodiments, the thickness of the flexible cover layer 800 is 0.2-3 mm, for example 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2.0 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm, 3.0 mm.

[0134] [Wireless Charger 10 with Two Transmitting Coil Modules] In some embodiments, the wireless charger 10 has two transmitting coil modules (200, 300): a first transmitting coil module 200 and a second transmitting coil module 300. The second transmitting coil module 300 is located to one side of the first transmitting coil module 200. The first transmitting coil module 200 and the second transmitting coil module 300 use different charging protocols or have different rated charging power. When one of the first transmitting coil module 200 or the second transmitting coil module 300 is in operation, the other is not in operation, avoiding electromagnetic crosstalk caused by the simultaneous operation of the two sets of transmitting coil modules (200, 300) and ensuring charging stability. By setting two independent transmitting coil modules (200, 300) to adapt to different wireless charging protocols or different rated charging power, the wireless charger 10 can meet the needs of different users without replacing it, reducing the cost of use.

[0135] Taking the first example, the first transmitting coil module 200 is configured to adapt to the Apple MagSafe protocol, enabling wireless charging of Apple terminal devices, while the second transmitting coil module 300 is configured to adapt to the MPP (Magnetic Power Profile) protocol or the EPP (Extended Power Profile) protocol, enabling wireless charging of Android terminal devices.

[0136] In a second example, the first transmitting coil module 200 is configured to adapt to the MPP protocol, and the second transmitting coil module 300 is configured to adapt to the EPP protocol. In this way, the wireless charger 10 can wirelessly charge both non-magnetic charging devices without a magnetic ring and magnetic charging devices with an integrated magnetic ring.

[0137] To give a third example, the first transmitting coil module 200 has a rated charging power of 15W, which is capable of wirelessly charging iPhone 12-15, etc., and the second transmitting coil module 300 has a rated charging power of 25W, which is capable of wirelessly charging iPhone 16-17, etc.

[0138] It should be noted that when the two transmitting coil modules (200, 300) are sufficiently spaced and there is no electromagnetic interference between them, they can work simultaneously.

[0139] In some embodiments, see Figures 2 to 7 The first transmitting coil module 200 is connected to the lifting module of the previous embodiment to enable the first transmitting coil module 200 to be raised and lowered relative to the housing 100. Furthermore, the first transmitting coil module 200 has a magnetic attraction function.

[0140] In some embodiments, see Figures 2 to 7 The second transmitting coil module 300 is connected to the X-direction motion module 400 of the previous embodiment, so that the second transmitting coil module 300 can move relative to the housing 100 in the X direction. Furthermore, the second transmitting coil module 300 does not have a magnetic attraction function.

[0141] In some embodiments, see Figures 2 to 7 The first transmitting coil module 200 is connected to the lifting module of the previous embodiment, and the second transmitting coil module 300 is connected to the X-axis motion module 400 of the previous embodiment. When the second transmitting coil module 300 is in the first position, the two transmitting end planes are horizontally misaligned. When the second transmitting coil module 300 is in the second position, the transmitting end plane of the first transmitting coil module 200 is lower than the transmitting end plane of the second transmitting coil module 300, and the second transmitting coil module 300 covers at least a portion of the transmitting end plane of the first transmitting coil module 200.

[0142] Further, see Figure 10 The wireless charger 10 also includes a controller 900, which has an identification module 910 and a control module 920 that communicate with each other. The identification module 910 is used to identify the charging status of the device to be charged. The two transmitting coil modules (200, 300), the lifting module and the X-axis motion module 400 are all connected to the controller 900.

[0143] When the identification module 910 identifies that the device to be charged is in fast charging mode, the identification module 910 does not send a switching signal to the control module 920 and uses the current transmitting coil module (200, 300) to charge the current electronic device. Otherwise, it sends a switching signal to the control module 920, and the wireless charger 10 switches to another transmitting coil module (200, 300) to charge the device to be charged. In this way, the wireless charger 10 can automatically switch the corresponding transmitting coil module (200, 300) according to the charging protocol or rated charging power of the device to be charged, so as to achieve high-power charging.

[0144] Taking the first example, the identification module 910 samples the input voltage and bus current of the wireless charger 10 and calculates the total transmission power in real time. If the total transmission power is continuously >7.5W, it is determined that fast charging is in operation; if the total transmission power continuously drops to below 5W, it is determined that fast charging is terminated.

[0145] In the second example, the identification module 910 samples the temperature of the transmitting coil and the power MOS thermistor. When the whole device is hot, the identification module 910 determines that it is not in fast charging mode, and the wireless charger 10 forcibly shuts down the fast charging channel.

[0146] The working principle of wireless charger 10 will be explained below using wireless charger C as an example. The working principle of other types of wireless charger 10 is the same or similar, so it will not be described in detail here.

[0147] The first transmitting coil module 200 of the wireless charger C is connected to the lifting module and is compatible with Apple iPhone 12–15, while the second transmitting coil module 300 is connected to the X-axis motion module 400 and is compatible with Android terminal devices. The default setting of the wireless charger C is that the transmitting end plane of the first transmitting coil module 200 is lower than the transmitting end plane of the second transmitting coil module 300, and the two are horizontally offset. The second transmitting coil module 300 is in the working state, while the first transmitting coil module 200 is in the non-working state.

[0148] The operation of the wireless charger C may include the following situations.

[0149] In the first scenario, if the device to be charged is an iPhone 15, and the iPhone 15 is placed on the wireless charger C, the second transmitting coil module 300 operates for a first period (e.g., 1-3 minutes). The identification module 910 detects that the charging status of the device is not in fast charging mode and sends a first signal to the control module 920. After receiving the first signal, the controller 900 controls the X-axis motion module 400 to move the second transmitting coil module 300 closer to the first transmitting coil module 200. The second transmitting coil module 300 operates for a second period (e.g., 1-3 minutes). The identification module 910 detects that the charging status of the device is still not in fast charging mode and sends a second signal to the control module 920. After receiving the second signal, the controller 900 controls the X-axis motion module 400 to move the second transmitting coil module 300 away from the first transmitting coil module 200. During the third period of operation of the second transmitting coil module 300 (e.g., 1-3 minutes), the identification module 910 identifies that the charging status of the device to be charged is still not in fast charging mode, and sends a third signal to the control module 920. After receiving the third signal, the controller 900 controls the lifting module to extend and the first transmitting coil module 200 to operate while the second transmitting coil module 300 does not operate. During the fourth period of operation of the first transmitting coil module 200 (e.g., 1-3 minutes), the identification module 910 identifies that the charging status of the device to be charged is in fast charging mode, and the wireless charger 10 uses the current transmitting coil module (i.e., the first transmitting coil module 200) to charge the current electronic device.

[0150] In the second scenario, if the device to be charged is an Android terminal device, the Android terminal device is placed on the wireless charger C.

[0151] If the identification module 910 identifies that the charging state of the device to be charged is fast charging, the wireless charger C uses the current transmitting coil module (i.e., the second transmitting coil module 300) to charge the current electronic device without changing its current position. If the identification module 910 identifies that the charging state of the device to be charged is not fast charging, the identification module 910 sends a first signal to the control module 920. After receiving the first signal, the controller 900 controls the X-axis motion module 400 to execute the action of the second transmitting coil module 300 moving closer to the first transmitting coil module 200.

[0152] During the second operation of the second transmitting coil module 300, if the identification module 910 identifies that the charging state of the device to be charged is fast charging, the wireless charger C uses the current transmitting coil module and does not change its current position to charge the current electronic device; if the identification module 910 identifies that the charging state of the device to be charged is not fast charging, the identification module 910 sends a second signal to the control module 920. After receiving the second signal, the controller 900 controls the X-axis motion module 400 to execute the action of moving the second transmitting coil module 300 away from the first transmitting coil module 200.

[0153] During the third period of operation of the second transmitting coil module 300, the identification module 910 identifies that the charging state of the device to be charged is in fast charging mode, and the wireless charger C uses the current transmitting coil module and does not change its current position to charge the current electronic device; if the identification module 910 identifies that the charging state of the device to be charged is not in fast charging mode, the identification module 910 sends a third signal to the control module 920. After receiving the third signal, the control module 920 forcibly closes the fast charging channel.

[0154] In some embodiments, the controller 900 determines the transmitter coil module (200, 300) adapted to the device to be charged by receiving user input information, so as to better meet the needs of different users. For example, the user can select the transmitter coil module (200, 300) adapted to the current device to be charged by the manual switch of the wireless charger 10 or by a touch screen / remote control device (such as a mobile phone) that is communicatively connected to the wireless charger 10.

[0155] In some embodiments, the controller 900 determines the default position of the transmitting coil module (200, 300) and its precise alignment position with the receiving coil by receiving user input information, so as to better meet the needs of different users.

[0156] In some embodiments, the controller 900 determines the default settings of the wireless charger 10 by receiving user input information.

[0157]

Car Wireless Charging Device 1

[0158] In some embodiments, see Figure 11 and Figure 12The mounting component 20 is a hollow mounting frame with a through opening running vertically. The wireless charger 10 is installed at the opening 121 at the bottom of the mounting frame. The interior of the mounting frame and the top surface of the wireless charger 10 together form an upward-opening receiving cavity for placing the device to be charged. Furthermore, the receiving cavity is wider at the top and narrower at the bottom, guiding the device to be charged to the top surface of the wireless charger 10.

[0159] In some embodiments, see Figure 11 and Figure 12 The in-vehicle wireless charging device 1 also includes a partition 21 integrally formed with the mounting component 20. The partition 21 divides the receiving cavity into a first charging area and a second charging area. Two wireless chargers 10 are provided, with each of the first and second charging areas independently equipped with a wireless charger 10. The in-vehicle wireless charging device 1 is divided into two independent charging areas by the partition 21, with each area equipped with an independent adjustable wireless charger 10. The two devices can automatically align themselves without interfering with each other, meeting the simultaneous charging needs of the driver and passenger, and making full use of the vehicle's storage space. The partition 21 is integrally formed with the mounting component 20, reducing installation steps and ensuring connection strength.

[0160] It should be noted that the mounting component 20 and the partition component 21 can also be a separate structure, and the two are fixedly connected by fasteners.

[0161] In some embodiments, see Figure 11 and Figure 12 The in-vehicle wireless charging device 1 also includes a flexible covering layer 800 as described in the above embodiments. The flexible covering layer 800 is connected to the mounting member 20 or the housing 100 of the wireless charger 10, and the flexible covering layer 800 covers at least the top surface area of ​​the wireless charger 10. On the one hand, it can improve the appearance of the product and prevent dust and debris from entering the interior of the in-vehicle wireless charging device 1; on the other hand, it increases the coefficient of friction of the contact surface, prevents the device to be charged from slipping, and ensures the alignment effect and continuous charging stability. At the same time, the flexible covering layer 800 can buffer collisions and prevent scratches, and has electrical insulation and splash resistance capabilities, improving the safety of use.

[0162] Compared with the prior art, this application has at least one of the following technical effects: 1. Configure the X-axis motion module 400 to adjust the horizontal position of the transmitting coil module (200, 300), reduce the misalignment between the transmitting coil and the receiving coil, and even put the two coils in the optimal coupling position; realize automatic alignment, reduce the requirements for the placement of the device to be charged, and improve the user experience.

[0163] 2. Configure a lifting module to adjust the height of the transmitting end plane of the transmitting coil module (200, 300), reduce the misalignment between the transmitting coil and the receiving coil, and even put the two coils in the optimal coupling position, effectively solving the coil alignment misalignment problem caused by the lens protrusion of the device to be charged.

[0164] 3. The linkage mechanism 700 is configured to achieve the effect of amplifying the lifting displacement (ZQ=ZM>ZP). That is, a small displacement of the power input point can drive the power output point to produce a larger displacement, thereby achieving a larger lifting stroke within a limited height space, reducing the overall thickness of the machine, and making it suitable for scenarios where the height dimension of the lifting module is limited.

[0165] 4. Equipped with two independent transmitting coil modules (200, 300), each adapted to different wireless charging protocols or different rated charging powers, it can meet the needs of different users without replacing the wireless charger, thus reducing the cost of use.

[0166] 5. The two independent transmitting coil modules (200, 300) can be staggered and stacked to avoid structural interference and electromagnetic interference between the two transmitting coil modules (200, 300); at the same time, it can reduce the space occupied by the whole machine and adapt to the narrow installation environment.

[0167] 6. A screw and nut drive structure is adopted, which has mechanical self-locking characteristics. In the event of minor bumps / shaking, the transmitting coil modules (200, 300) are less likely to shift on their own, ensuring continuous and stable charging. Simultaneously, the screw and nut drive allows for precise micro-adjustment down to the 1mm level, ensuring high position adjustment accuracy and reliable positioning.

[0168] 7. The vehicle-mounted wireless charging device adopts a cavity structure with enclosing side walls, which can laterally limit the placement of the device to be charged, restrict the horizontal displacement and flipping of the device to be charged, and prevent the device from slipping off due to vehicle shaking.

[0169] 8. The flexible covering layer 800 covers the top surface of the shell 100, which has the functions of beautifying the appearance, preventing dust and foreign object intrusion; at the same time, the flexible material can increase the friction of the contact surface, prevent slipping and positioning, buffer collision and scratch, and has electrical insulation and splash prevention capabilities. It can also flexibly deform with the moving structure, without interfering with the normal operation of the mechanism, and extend the service life of the equipment.

[0170] 9. Dual independent charging zones allow for simultaneous charging of two devices, expanding the range of usage scenarios.

[0171] 10. Equipped with an identification module, it automatically identifies the charging status of the device to be charged, achieving automatic adaptation and alignment, with a high degree of intelligence, thus improving the user experience.

[0172] 11. The design employs a combination of inclined plane lifting and a linkage mechanism. First, the horizontal motion in the X direction is converted into vertical lifting motion of the connecting component via the inclined plane. Then, the linkage mechanism amplifies the lifting displacement (ZQ=ZM>ZP), allowing a smaller displacement of the power input point to drive a larger lifting displacement of the transmitting coil module. This achieves a greater lifting stroke within a limited height space, effectively reducing the overall thickness, making it particularly suitable for applications such as vehicle-mounted systems where height dimensions are limited. The two-stage transmission of inclined plane lifting and linkage mechanism displacement amplification, compared to a single inclined plane lifting or a single linkage lifting mechanism, achieves a greater lifting amount under the same space constraints, significantly improving space utilization.

[0173] 12. The linkage mechanism ensures smooth transmission, with no impact or jamming during movement, smooth lifting, low noise, and a good user experience. The multi-link mechanism, distributed circumferentially, forms multiple support points, resulting in more stable load bearing, less deformation under stress, and no jamming or abnormal noise during long-term reciprocating lifting, thus extending service life. Two options are available: a two-stage linkage mechanism and a three-stage linkage mechanism. The two-stage structure is simpler and has fewer parts, while the three-stage mechanism provides a more significant amplification of lifting displacement. The choice can be made flexibly according to actual needs.

[0174] 13. The support surface is equipped with multiple positioning slots, which can accurately lock the transmitter coil module at multiple height levels (below the opening, flush with the opening, and above the opening) to meet different usage needs; the positioning slots have a self-locking function, so the transmitter coil module will not move on its own in bumpy and shaking scenarios, ensuring charging stability.

[0175] 14. The rolling elements are configured to make rolling contact with the inclined plane, which greatly reduces motion resistance and overall power consumption compared to sliding friction. A micro low-power motor can be selected.

[0176] 15. The limiting convex wall of the motion seat and the supporting surface together form a guide groove, which, together with the circumferentially distributed guide components, achieves double limiting, resulting in high lifting stability. It is suitable for bumpy vehicle environments and also ensures that the launch end plane remains horizontal during lifting, guaranteeing alignment accuracy. The two supporting surfaces are arranged parallel along the Y direction, forming multi-point support, which makes the load-bearing more stable, reduces deformation under stress, and ensures no jamming or abnormal noise during long-term reciprocating lifting, thus extending service life.

[0177] 16. Equipped with elastic elements to assist descent, the linkage mechanism achieves automatic descent without external power input, saving energy, protecting the environment, and reducing noise; the first torsion spring's torque can be adjusted through a multi-hole design to adapt to different load requirements. The dual elastic element (first elastic element + second elastic element) combination design increases the descent driving force, ensuring a smooth and reliable descent process.

[0178] 17. The four linkage mechanisms are arranged in pairs, with the connecting parts driven in the middle. The structure is compact, occupies little space, and has a reasonable layout. The power output points are distributed at intervals along the circumference to ensure that the launch end plane always maintains a horizontal attitude and guarantees alignment accuracy.

[0179] 18. The bracket and X-axis motion module adopt a detachable connection method using elastic claws. During assembly, simply pressing down is sufficient to lock and secure the module, eliminating the need for screws. This simplifies the assembly process, reduces assembly time, and is suitable for automated mass production lines. For maintenance and replacement, simply pull it out; disassembly and assembly are convenient, with a high degree of modularity and strong interchangeability of parts. The elastic claws provide radial elastic buffering, offering minor shock absorption and preventing hard contact wear between the bracket and the nut / sliding seat, extending product lifespan and better adapting to bumpy operating environments. The X-axis is angled to the housing centerline, which helps increase the motion seat's stroke, reduces the housing's X-axis dimensions, and further optimizes the spatial layout.

[0180] 19. Equipped with a Y-axis threaded adjustment mechanism, the Y-axis position of the transmitting coil can be manually fine-tuned during assembly or maintenance, further improving the flexibility and accuracy of coil alignment.

[0181] 20. The first lead screw and the first guide are respectively set on both sides of the housing to form a double-sided support limit. The two ends of the bracket are fixed synchronously. During the translation process, there will be no left or right deflection or up and down tilting. The plane of the transmitting end always maintains a horizontal attitude to ensure the alignment accuracy.

[0182] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

[0183] Any combination of various embodiments of this application, provided that it does not deviate from the inventive concept of this invention, shall be regarded as the content disclosed in this application; any simple modifications to the technical solution and any combination of different embodiments that do not deviate from the inventive concept of this application shall be within the protection scope of this application.

Claims

1. A lifting module for use as a transmitting coil module in a wireless charger, characterized in that, The lifting module includes: substrate; The power source is mounted on the base plate; A motion seat is connected to the power source for transmission. The motion seat has a support surface, which includes an inclined surface that slopes from bottom to top in the X direction. At least two guide members extending in the vertical direction are provided to guide the transmitting coil module to move up and down in a directional manner in the vertical direction. At least two linkage mechanisms are provided, each linkage mechanism having a power input point and a power output point. All power output points are used for direct connection with the transmitting coil module. Each linkage mechanism includes a first link and a second link. The first end of the first link is hinged to the substrate at a first hinge point. The first end of the second link is hinged to the tail end of the first link at a second hinge point. The tail end of the second link has a third hinge point and is drively connected to the power output point. A connector abuts against the support surface of the motion seat, and the connector is fixedly connected to all the power input points; When the power source drives the motion seat to move along the X direction, the motion seat drives the connecting piece to rise and fall, and the linkage mechanism drives the transmitting coil module to rise and fall. The lifting displacement of the power output point is ZQ, the lifting displacement of the transmitting coil module is ZM, and the lifting displacement of the power input point is ZP, where ZQ = ZM > ZP > 0.

2. The lifting module according to claim 1, characterized in that: The linkage mechanism further includes a third link, which is a three-stage linkage mechanism. The first end of the third link is hinged to the tail end of the second link at the third hinge point. The tail end of the third link has a fourth hinge point, which is the power output point. The third link is configured to be hinged to the transmitting coil module at the fourth hinge point.

3. The lifting module according to claim 1, characterized in that: The linkage mechanism is a two-stage linkage mechanism, the third hinge point is the power output point, and the second link is configured to have a pivotal hinge and a sliding connection in a second direction with the transmitting coil module at the third hinge point, the second direction being perpendicular to the first direction.

4. The lifting module according to claim 1, characterized in that: The linkage mechanism is configured as four, which are spaced apart along the Y direction and have the same number of stages. The connector extends along the Y direction. The four power output points are spaced apart along the circumference of the transmitting coil module. The four linkage mechanisms are paired up to form two sets of linkage mechanisms. The two sets of linkage mechanisms are located at the two axial ends of the connector, respectively. The middle section of the connector is connected to the motion seat.

5. The lifting module according to claim 4, characterized in that: Each linkage mechanism also includes a first elastic element, and the connecting member moves downward along the first direction under the drive of the first elastic element.

6. The lifting module according to claim 5, characterized in that: The first elastic element is a first torsion spring, which is sleeved on the outer periphery of the axial end of the connector. At least one second connecting rod is provided with a plurality of insertion holes, which are distributed circumferentially around the connector. One end of the first torsion spring can be selectively inserted into one of the plurality of insertion holes, and the other end is fixedly connected to the adjacent second connecting rod.

7. The lifting module according to claim 6, characterized in that: The lifting module further includes a second elastic element and a fixing rod. The fixing rod is fixedly connected to the base plate and suspended in the air. The second elastic element is sleeved on the outer periphery of the fixing rod. One end of the second elastic element is fixedly connected to the base plate, and the other end elastically abuts against the connecting member. The connecting member moves downward along the first direction under the drive of the second elastic element.

8. The lifting module according to any one of claims 1 to 7, characterized in that: The motion seat has upwardly protruding limiting convex walls on opposite sides of the support surface in the Y direction. The support surface and the two limiting convex walls enclose a guide groove. The connecting member is provided with a rolling element, which rolls within the guide groove of the motion seat; and / or, The support surface has three positioning slots with the openings facing upwards. The support surface between two adjacent positioning slots is an inclined surface, which smoothly transitions into the positioning slot. The three positioning slots correspond to the three height levels of the transmitting end plane of the transmitting coil module.

9. A wireless charger, characterized in that: include: The shell has an opening on its top surface; The transmitting coil module is arranged inside the housing corresponding to the opening. The lifting module according to any one of claims 1 to 8 is located inside the housing, wherein the base plate is the bottom plate of the housing, all the power output points of the lifting module are directly connected to the transmitting coil module, and the lifting module is capable of driving the transmitting coil module to rise and fall relative to the opening; A flexible covering layer is connected to the housing and at least covers the opening. The flexible covering layer is a flame-retardant brushed fabric or a composite layer of inherently flame-retardant knitted brushed fabric and flexible film.

10. A vehicle-mounted wireless charging device, characterized in that, The device includes a hollow mounting frame and the wireless charger as described in claim 9. The mounting frame is used to fix the vehicle-mounted wireless charging device to the vehicle body. The wireless charger is mounted on the mounting frame. The mounting frame has a through-hole that runs vertically through the device. The wireless charger is mounted at the opening at the bottom of the mounting frame. The interior of the mounting frame and the top surface of the wireless charger together form a receiving cavity. The receiving cavity is used to place the device to be charged. The transmitting end plane of the wireless charger is located in the bottom wall area of ​​the receiving cavity.

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