A vehicle-mounted wireless charging box
Patent Information
- Application Number
- CN202611190474.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-08-06
- Publication Date
- 2026-10-09
AI Technical Summary
[0006]鉴于现有技术存在的车载无线充电盒上的电子设备在充电时，需要人为控制摆放位置，以使发射线圈与充电线圈相对，而不能随意摆放的问题，提出了一种可供用户随意摆放电子产品，且内部发射线圈能与待充电的电子产品的接收线圈自动对齐，提升用户体验的车载无线充电盒
1、本发明所述车载无线充电盒中发射线圈设于磁吸滑片上，所述磁吸滑片位于所述滑移平台上，所述滑移平台与用于放置待充电设备的置物平台相对，且所述滑移平台与磁吸滑片之间保持光滑接触，所述磁吸滑片可在磁吸吸力的作用下带着所述发射线圈在滑移平台上自由移动，使得无论待充电的设备放置在置物平台上的哪个位置，所述发射线圈均能够与接收线圈保持中心对齐，且不受机械驱动或机械行程等结构的限制。
Smart Images
Figure CN122890735A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of wireless charging technology, and more particularly to an in-vehicle wireless charging box. Background Technology
[0002] With the widespread use of built-in charging coils and magnetic clips in consumer electronics, the demand for wireless charging applications in automotive scenarios is growing. In existing automotive scenarios, in-vehicle wireless charging boxes are integrated into the center armrest of the car. Some models that do not have in-vehicle wireless charging equipment are also adding this function by using an external in-vehicle wireless charging box.
[0003] To achieve optimal power transmission when a car wireless charging box wirelessly charges electronic products, the transmitting coil inside the car wireless charging box and the receiving coil inside the electronic product must at least meet the requirement of center alignment. Center alignment means that the lateral offset of the geometric center of the coil is 0. When there is a positional offset, the effective wireless charging power will decrease accordingly.
[0004] In existing wireless charging cases, to address the aforementioned issues, multiple coils are often placed inside the case to increase the effective sensing area and thus improve the probability of alignment with the receiving coil. However, in practical applications, since the in-vehicle wireless charging device is integrated into the storage tray of the armrest, which has a large area, completely covering the entire storage tray surface with its transmitting coil would significantly increase production costs and the difficulty of power and heat management. Therefore, the current common practice is to sacrifice user experience by dividing the storage tray surface into several areas roughly the size of the electronic devices and guiding users to place their phones and other wireless charging devices in a specific manner, which greatly reduces the user experience.
[0005] In conclusion, there is an urgent need for a car wireless charging box that allows users to place electronic products freely and whose internal transmitting coil can automatically align with the receiving coil of the electronic product to be charged, thereby improving the user experience. Summary of the Invention
[0006] In view of the problem that existing in-vehicle wireless charging boxes require manual control of the placement of electronic devices during charging to ensure that the transmitting coil is aligned with the charging coil, and cannot be placed arbitrarily, an in-vehicle wireless charging box is proposed that allows users to place electronic products arbitrarily, and the internal transmitting coil can automatically align with the receiving coil of the electronic product to be charged, thereby improving the user experience.
[0007] To solve the above problems, the technical solution of the present invention is as follows: A vehicle-mounted wireless charging box includes a box structure and a transmitting coil. The transmitting coil is disposed within the box structure. The box structure is provided with a sliding platform and a magnetic slider. The transmitting coil is fixed on the magnetic slider, which can slide freely on the sliding platform. The magnetic slider is attracted to the receiving coil of the device to be charged. A power cord is connected to the transmitting coil to supply power to it. When the magnetic slider moves, the power cord moves with the magnetic slider and always remains taut.
[0008] As a preferred technical solution, a coiled spring structure is provided inside the box structure, and the winding and unwinding of the power cord drives the coiled spring structure to rotate and store energy.
[0009] As a preferred technical solution, the power line includes a first conductive wire and a second conductive wire, wherein one end of the first conductive wire and the second conductive wire are respectively connected to the two ends of the transmitting coil to form an electrical connection path, and the other ends of the first conductive wire and the second conductive wire are fixedly connected to form an electrical connection break; the power line and the transmitting coil form a ring structure and are wrapped around the sliding platform.
[0010] As a preferred technical solution, the sliding platform is provided with sliding guide rails on both sides, and sliding blocks are provided on the sliding guide rails. The sliding blocks drive the power line to move along the sliding guide rails.
[0011] As a preferred technical solution, the box structure is provided with a conductive slide rod, and the sliding block is provided with a connecting rod that is slidably connected to the conductive slide rod. The power line is electrically connected to the circuit board through the connecting rod and the conductive slide rod, and the circuit board supplies power to the transmitting coil.
[0012] As a preferred technical solution, the sliding platform is provided with a plurality of spherical balls, which are installed in ball grooves on the sliding platform. The magnetic slider is placed on the plurality of spherical balls, wherein the spherical balls can roll freely in the ball grooves.
[0013] As a preferred technical solution, a magnetic ring is connected to the sliding platform by a spring, and the magnetic ring surrounds the spherical ball.
[0014] As a preferred technical solution, the surfaces of the suspending magnetic ring and the magnetically attracted slider repel each other.
[0015] As a preferred technical solution, the magnetic suspension rings are connected by a connector made of a non-elastic deformable material.
[0016] The beneficial effects of this invention are: 1. In the vehicle-mounted wireless charging box of the present invention, the transmitting coil is disposed on a magnetic slider, the magnetic slider is located on the sliding platform, the sliding platform is opposite to the placement platform for placing the device to be charged, and the sliding platform and the magnetic slider maintain smooth contact. The magnetic slider can carry the transmitting coil to move freely on the sliding platform under the action of magnetic attraction, so that no matter where the device to be charged is placed on the placement platform, the transmitting coil can maintain center alignment with the receiving coil, and is not limited by mechanical drive or mechanical stroke or other structures.
[0017] 2. In the in-vehicle wireless charging box of the present invention, the power cord includes a first conductive wire and a second conductive wire. The first conductive wire and the second conductive wire are respectively connected to both sides of the transmitting coil. Sliding rails are provided on both sides of the sliding platform. The first conductive wire and the second conductive wire pass through the sliding blocks on the sliding rails on both sides of the sliding platform to form a ring connection, so that the forces on both sides of the transmitting coil are equal, realizing the force balance on both sides of the transmitting coil. The magnetic attraction force on the magnetic slider does not need to overcome the pulling force of the power cord on the magnetic slider. At the same time, the length of the power cord is always the length of the length surrounding the sliding platform, and the magnetic slider can remain in the position it was in during charging after charging is finished. The power cord does not require frequent winding and unwinding, thus extending the lifespan of the conductor. The sliding block can move back and forth along the sliding guide rail. When the magnetic slider is attracted by the magnetic force of the device to be charged, the force is converted into a force along the longitudinal direction of the sliding platform and a force along the transverse direction of the sliding platform. That is, the longitudinal force is converted into the rotation of the power cord around the sliding platform, and the transverse force is converted into the sliding of the sliding block along the sliding guide rail, allowing the magnetic slider to move to any position without any other resistance during the movement. This enables faster docking of the transmitting coil and the receiving coil, and there is no excess power cord length obstructing the movement of the magnetic slider.
[0018] Additional aspects and advantages of the invention 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 the invention. Attached Figure Description
[0019] Figure 1 This is a three-dimensional schematic diagram of the in-vehicle wireless charging box described in this invention; Figure 2 A partial cross-sectional schematic diagram of the vehicle-mounted wireless charging box with a coil spring structure; Figure 3 A cross-sectional schematic diagram of the vehicle-mounted wireless charging box with a ring circuit structure; Figure 4 This is a schematic diagram of a ring circuit structure; Figure 5A partial cross-sectional schematic diagram of the vehicle-mounted wireless charging box with a ring circuit structure; Figure 6 for Figure 4 Enlarged diagram of A in the middle; Figure 7 A schematic diagram of the circuit board inside the vehicle-mounted wireless charging box with a ring circuit structure. Figure 8 A cross-sectional schematic diagram of a sliding platform with spherical balls; Figure 9 A partial cross-sectional schematic diagram of the vehicle-mounted wireless charging box with a levitation magnetic ring; Figure 10 for Figure 9 A magnified view of a portion of the image; Figure 11 A partial cross-sectional schematic diagram of an in-vehicle wireless charging box with a levitation magnetic ring; Figure 12 A schematic diagram of the in-vehicle wireless charging box with a magnetic ring in the depressed state.
[0020] The reference numerals and components involved in the accompanying drawings are shown below: 1. Box structure; 2. Transmitting coil; 3. Sliding platform; 4. Magnetic slider; 5. Power cord; 6. Circuit board; 7. Sliding block; 8. Spherical ball; 9. Suspended magnetic ring; 11. Storage platform; 12. Cooling fan; 13. Sliding guide rail; 14. Conductive slide rod; 31. Ball groove; 51. First conductive wire; 52. Second conductive wire; 53. Insulating block; 71. Fixed pulley; 72. Electrical connection block; 73. Connecting rod; 91. Spring; 92. Connector. Detailed Implementation
[0021] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0022] Please see the appendix Figure 1 Appendix Figure 2 , Figure 1 This is a three-dimensional schematic diagram of the in-vehicle wireless charging box described in this invention. Figure 2This is a partial cross-sectional view of a vehicle-mounted wireless charging box with a coil spring structure. The vehicle-mounted wireless charging box includes a box structure 1, a transmitting coil 2, a sliding platform 3, and a magnetic slider 4. The box structure 1 has a placement platform 11 for placing devices to be charged. Below the placement platform 11 is the sliding platform 3, which is opposite to the placement platform 11 and has an area not smaller than the placement platform 11. The magnetic slider 4 and the transmitting coil 2 are located between the sliding platform 3 and the placement platform 11. The transmitting coil 2 is fixed to the magnetic slider 4, and the magnetic slider 4 has a magnetic attraction effect that allows it to move upwards. The transmitting coil 2 moves along the sliding platform 3. Preferably, the sliding platform 3 and the magnetic slider 4 maintain smooth contact. For example, the sliding platform 3 can be a low-friction smooth surface made of non-magnetic materials such as ceramic or glass, and the contact surface of the magnetic slider 4 should also be processed into a smooth surface. A power supply line 5 is connected to the transmitting coil 2, and the other end of the power supply line 5 is connected to the circuit board 6 inside the box structure 1. When the magnetic slider 4 drives the transmitting coil 2 to move on the sliding platform 3, the power supply line 5 moves with the transmitting coil 2 and always remains taut. Preferably, in some embodiments, the box structure 1 is also provided with a cooling fan 12 for heat dissipation, and heat dissipation holes are provided on both sides of the storage platform 11 for ventilation and heat dissipation.
[0023] In use, an electronic device with magnetic attraction function, such as a built-in magnetic plate (taking a mobile phone as an example in this embodiment), is placed randomly on the placement platform 11 of the car wireless charging box structure 1 of the present invention. The magnetic wireless charging module in the mobile phone and the magnetic slider 4 generate mutual attraction. Under the action of this magnetic attraction, the magnetic slider 4 moves along the sliding platform 3 toward the wireless charging module of the mobile phone until the magnetic slider 4 and the built-in magnetic plate in the mobile phone are adsorbed and aligned.
[0024] In the in-vehicle wireless charging box of the present invention, the transmitting coil 2 is disposed on the magnetic slider 4, which is located on the sliding platform 3. The sliding platform 3 is opposite to the placement platform 11 for placing the device to be charged, and the sliding platform 3 and the magnetic slider 4 maintain smooth contact. The magnetic slider 4 can move freely on the sliding platform 3 under the action of magnetic attraction, so that no matter where the device to be charged is placed on the placement platform 11, the transmitting coil 2 can maintain center alignment with the receiving coil, and is not limited by mechanical drive or mechanical stroke. In the present invention, when the transmitting coil 2 moves on the sliding platform 3, the power cord 5 is always kept taut, which can prevent the power cord 5 from wandering on the surface of the sliding platform 3 and hindering the movement of the magnetic slider 4.
[0025] Please refer to the appendix again. Figure 2 In some embodiments, to prevent the power cord 5 from detaching from the surface of the sliding platform 3 and hindering the movement of the magnetic slider 4, a coil spring structure is provided on one side of the sliding platform 3 inside the box. The coil spring structure stores energy through spiral deformation. Specifically, the center of the coil spring structure is fixed on a rotating shaft, and the power cord 5 is wound around the rotating shaft. When the magnetic slider 4 moves, it pulls the power cord 5, causing the power cord 5 to drive the rotating shaft to rotate, thereby causing the spring of the coil spring structure to rotate and store energy. When the mobile phone on the storage platform 11 is removed, that is, the attraction force on the magnetic slider 4 disappears, the coil spring structure releases its elastic potential energy, drives the rotating shaft to rotate, and forms a coiling of the power cord 5, preventing the power cord 5 from detaching from the sliding platform 3.
[0026] In the above embodiments, although the coiled spring structure achieves the winding of the power cord 5, its spring 91 structure generates resistance in the opposite direction when the magnetic slider 4 moves, and the resistance gradually increases as the power cord 5 is stretched. This requires the magnetic attraction force between the magnetic slider 4 and the device to be charged to be greater than, or even much greater than, the elastic force generated by the spring 91 structure to ensure the efficient operation of the vehicle wireless charging box. Therefore, in order to avoid affecting the movement of the magnetic slider 4 and thus avoid hindering the alignment of the transmitting coil 2 and the receiving coil, please refer to the appendix. Figure 3 Appendix Figure 4 , Figure 3 This is a cross-sectional schematic diagram of the vehicle-mounted wireless charging box with a ring circuit structure. Figure 4 This is a schematic diagram of a ring circuit structure. In some preferred embodiments, the power line 5 includes a first conductive line 51 and a second conductive line 52. The first conductive line 51 and the second conductive line 52 are respectively connected to the transmitting coil 2 to form a power-carrying circuit. The other ends of the first conductive line 51 and the second conductive line 52 are connected to each other through an insulating block 53. The first conductive line 51, the transmitting coil 2, the second conductive line 52, and the insulating block 53 form a ring structure connected end to end, which is sleeved on the sliding platform 3 and can move laterally back and forth along the side wall of the sliding platform 3. For details, please refer to the appendix. Figure 5 Appendix Figure 6 Appendix Figure 7 , Figure 5 This is a partial cross-sectional view of the vehicle-mounted wireless charging box with a ring circuit structure. Figure 6 for Figure 4 An enlarged diagram of A in the diagram. Figure 7This is a schematic diagram of the circuit board inside the vehicle-mounted wireless charging box with a ring circuit structure. Sliding guide rails 13 are provided on both sides of the sliding platform 3. Sliding blocks 7 are slidably connected to the sliding guide rails 13. Preferably, the sliding blocks 7 and the sliding guide rails 13 slide and translate through a low-friction structure such as a ball bearing linear guide. To enable the sliding blocks 7 to support the power cord 5 and the electrical connection between the power cord 5 and the power supply circuit board 6, each sliding block 7 is provided with two sets of fixed pulleys 71. Preferably, the fixed pulleys 71 are insulated. The sliding blocks 7 are also provided with conductive electrical connection blocks 72. The power cord 5 passes through the electrical connection blocks 72. A conductive slide rod 14 is provided inside the box structure 1. The conductive slide rod 14 is electrically connected to the circuit board 6. A connecting rod 73 is provided on the sliding blocks 7 and slidably connected to the conductive slide rod 14. The connecting rod 73, the conductive slide rod 14, and the electrical connection blocks 72 are electrically connected to each other.
[0027] It should be noted that in this embodiment, the first conductive wire 51 and the second conductive wire 52 are open-type conductive wires, and a circuit can be connected by contacting any point on them. The first conductive wire 51 and the second conductive wire 52 are electrically connected to the conductive slide rod 14 only through the electrical connection block 72, and the circuit is disconnected between the first conductive wire 51 and the second conductive wire 52 through the insulating block 53. The conductive slide rod 14 is also an open-type conductive wire, and is electrically connected only to the connecting rod 73 on the conductive slide rod 14. On both sides of the sliding platform 3, the sliding block 7, conductive slide rod 14, etc. are symmetrical structures. No matter where the magnetic slider 4 is located, the power supplied by the circuit board 6 enters the connecting rod 73 from the conductive slide rod 14 on one side, and then flows through the electrical connection block 72, the first conductive line 51 (or the second conductive line 52), the transmitting coil 2, the second conductive line 52 (or the first conductive line 51) in sequence, and flows through the electrical connection block 72, the connecting rod 73, the conductive slide rod 14 on the other side and returns to the circuit board 6, forming a complete current loop to maintain the operation of the transmitting coil 2.
[0028] In use, when the magnetic slider 4 is attracted by the magnetic force of the device to be charged, its longitudinal movement along the sliding platform 3 is converted into the rotation of the power line 5 around the sliding platform 3, and its lateral movement along the sliding platform 3 is converted into the sliding of the sliding block 7 along the sliding guide rail 13. It should be understood that in the vehicle wireless charging box of the present invention, the first conductive wire 51 and the second conductive wire 52 pass through the fixed pulleys 71 on the sliding blocks 7 on both sides of the sliding platform 3 to form a ring connection, thus making the forces on both sides of the transmitting coil 2 equal, achieving force balance on both sides of the transmitting coil 2. The magnetic force on the magnetic slider 4 does not need to overcome the pulling force of the power line 5 on the magnetic slider 4. At the same time, the length of the power line 5 is initially... Ultimately, the length of the sliding platform 3 is such that frequent winding and unwinding of the power cord 5 is unnecessary, thus extending the service life of the wire. In the lateral direction, the low-friction arbitrary sliding between the sliding block 7 and the sliding guide rail 13 allows the traction of the magnetic slider 4 in any direction to be smoothly converted into lateral and longitudinal movement, and no additional resistance needs to be overcome during this process. When the magnetic attraction disappears, since the force around the magnetic slider 4 is equal, the magnetic slider 4 will remain in its final position and remain stationary. When the user has a consistent placement habit, the connection between the transmitting coil 2 and the receiving coil can be achieved more quickly, unlike the above-mentioned coil spring structure, which continues to cause the magnetic slider 4 to shift under the action of elasticity after the connection is completed.
[0029] In some preferred embodiments, to further reduce the moving resistance of the magnetic slider 4 on the sliding platform 3, please refer to the appendix. Figure 8 , Figure 8 This is a cross-sectional schematic diagram of a sliding platform with spherical balls. Several ball grooves 31 are arrayed on the sliding platform 3, and each ball groove 31 contains spherical balls 8 of the same size. Preferably, the spherical balls 8 can roll freely within the ball grooves 31, and only within those grooves. The magnetic slider 4 is in contact with the spherical balls 8. The power cable 5, supported by the fixed pulley 71 on the sliding block 7, is slightly higher than the top of the spherical balls 8. In the vehicle-mounted wireless charging box of this embodiment, the spherical balls 8 significantly reduce the contact area with the magnetic slider 4, and the free rolling of the spherical balls 8 greatly reduces the sliding resistance of the magnetic slider 4, facilitating rapid contact between the transmitting coil 2 and the receiving coil.
[0030] Please see the appendix Figure 9 Appendix Figure 10 , Figure 9 This is a partial cross-sectional schematic diagram of the vehicle-mounted wireless charging box with a levitation magnetic ring. Figure 10 for Figure 9A partially enlarged schematic diagram; in some preferred embodiments, the sliding platform 3 is provided with a plurality of suspended magnetic rings 9, which surround the spherical ball 8 and are connected to the sliding platform 3 by springs 91, and the apex of the spherical ball 8 is higher than the position of the suspended magnetic rings 9. The suspended magnetic rings 9 are fixedly connected to other surrounding suspended magnetic rings 9 by connecting members 92, wherein the connecting members 92 are made of non-elastic deformable materials, such as canvas; preferably, the suspended magnetic rings 9 and the magnetic slider 4 have the same magnetic poles facing each other; in use, the magnetic slider 4 is located on the spherical ball 8, and the magnetic slider 4 and the suspended magnetic rings 9 repel each other with the same poles, that is, the suspended magnetic rings 9 will generate an upward repulsive force on the magnetic slider 4, that is, further The friction between the contact surfaces of the magnetic slider 4 and the spherical ball 8 is reduced, thus reducing the moving resistance of the magnetic slider 4 and improving its moving efficiency. In the vehicle-mounted wireless charging box of the present invention, the magnetic slider 4 repels the magnetic ring 9, while the magnetic slider 4 attracts the magnetic sheet inside the device to be charged. That is, the magnetic sheet inside the device to be charged repels the magnetic ring. Due to the large weight of the device to be charged, the repulsive force generated between the magnetic sheet and the magnetic ring inside is insufficient to push the device to move upward. This causes the magnetic ring 9 to compress the spring 91 below it, making the position of the magnetic ring 9 below the device to be charged lower than the positions of the other magnetic rings 9. Since the magnetic rings 9 are connected by the connector 92, please refer to the appendix. Figure 11 , Figure 12 , Figure 11 A partial cross-sectional schematic diagram of an in-vehicle wireless charging box with a levitation magnetic ring. Figure 12 A schematic diagram of the vehicle-mounted wireless charging box with a magnetic ring in a depressed state is shown. Therefore, when the height of one magnetic ring 9 decreases, it causes other magnetic rings 9 to gradually tilt towards the compressed ring 9, forming a funnel-shaped structure. Since the height of the spherical ball 8 remains unchanged, and the position of the magnetic plate at the target location is significantly lowered, the repulsive force it can provide to the magnetic slider 4 is minimized. This makes it easier for the magnetic slider 4 to move towards the area of least force, further increasing the moving speed of the magnetic slider 4. It should be understood that, preferably, the repulsive force between the magnetic slider 4 and the magnetic ring 9 is much smaller than the repulsive force between the charging device and the magnetic ring 9, and the repulsive force between the magnetic slider 4 and the magnetic ring 9 is insufficient to deform the spring 91.
[0031] It should be understood that in the application of the in-vehicle wireless charging box described in this invention, for charging devices without magnetic attraction function, an external shell such as a protective case with magnetic attraction function can be added, which is the prior art.
[0032] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several improvements and additions without departing from the principle of the present invention, and these improvements and additions should also be considered within the scope of protection of the present invention.
Claims
1. A vehicle-mounted wireless charging box, comprising a box structure and a transmitting coil, wherein the transmitting coil is disposed within the box structure, characterized in that, The housing structure includes a sliding platform and a magnetic slider. The transmitting coil is fixed on the magnetic slider, which can slide freely on the sliding platform. The magnetic slider is attracted to the receiving coil of the device to be charged. A power line is connected to the transmitting coil to supply power to it. When the magnetic slider moves, the power line moves with the magnetic slider and always remains taut.
2. The in-vehicle wireless charging box according to claim 1, characterized in that, A coiled spring structure is provided inside the box structure, and the winding and unwinding of the power cord drives the coiled spring structure to rotate and store energy.
3. The in-vehicle wireless charging box according to claim 1, characterized in that, The power line includes a first conductive wire and a second conductive wire, wherein one end of the first conductive wire and the second conductive wire are respectively connected to the two ends of the transmitting coil to form an electrical connection path, and the other ends of the first conductive wire and the second conductive wire are fixedly connected to form an electrical connection break; the power line and the transmitting coil form a ring structure and are wrapped around the sliding platform.
4. The in-vehicle wireless charging box according to claim 3, characterized in that, The sliding platform is equipped with sliding guide rails on both sides, and sliding blocks are provided on the sliding guide rails. The sliding blocks drive the power line to move along the sliding guide rails.
5. The in-vehicle wireless charging box according to claim 4, characterized in that, The box structure is equipped with a conductive slide rod, and the sliding block is equipped with a connecting rod that is slidably connected to the conductive slide rod. The power line is electrically connected to the circuit board through the connecting rod and the conductive slide rod, and the circuit board supplies power to the transmitting coil.
6. The in-vehicle wireless charging box according to claim 1, characterized in that, The sliding platform is provided with a plurality of spherical balls, which are installed in ball grooves on the sliding platform. The magnetic slider is placed on the plurality of spherical balls, wherein the spherical balls can roll freely in the ball grooves.
7. The in-vehicle wireless charging box according to claim 6, characterized in that, A magnetic ring is connected to the sliding platform by a spring, and the magnetic ring surrounds the spherical ball.
8. The in-vehicle wireless charging box according to claim 7, characterized in that, The surfaces of the suspended magnetic ring and the magnetic slider that are opposite each other repel each other.
9. The vehicle-mounted wireless charging box according to claim 8, characterized in that, Each of the suspended magnetic rings is connected by a connector made of a non-elastic deformable material.