Wireless charging device and vehicle

Abstract

The invention relates to a wireless charging device which comprises a placing panel and a charging coil, the charging coil is located below the placing panel, the placing panel is configured to be used for placing electronic equipment to be charged, the wireless charging device is characterized in that an annular magnetic conductive piece is arranged on the placing panel, the placing panel is made of a non-metal material, and the magnetic conductive piece is arranged on the placing panel. The magnetic conducting piece is embedded into the placing panel, and the magnetic conducting piece is preferably made of an amorphous nanocrystalline material. And a magnetic conductive sheet supported by an amorphous nanocrystalline material is also arranged below the charging coil.

Description

Technical Field

[0001] The present application relates to a wireless charging device which can be used in a vehicle. Background Art

[0002] Wireless charging has brought great convenience to mobile phone users because it does not require plugging and unplugging and is easy to pick up and put. It was first used in indoor scenes and then gradually introduced into car configurations. Especially in vehicles, there is no requirement for the type of charging port, and it can be picked up and put down at will, which greatly improves the convenience of charging mobile phones for drivers and passengers. However, wireless charging devices often have problems such as low charging efficiency.

[0003] The information provided in this section is for the purpose of generally presenting the background of the present application and therefore may contain information that does not constitute prior art in the art. Summary of the invention

[0004] The purpose of this application is to solve or at least alleviate the problems existing in the prior art.

[0005] One aspect of the present application relates to a wireless charging device, which includes a placement panel and a charging coil, wherein the charging coil is located below the placement panel, and the placement panel is configured to place an electronic device to be charged. The device is characterized in that an annular magnetic conductive member is provided on the placement panel, the placement panel is made of a non-metallic material, and the magnetic conductive member is embedded in the placement panel.

[0006] In an embodiment of the present application, optionally, the magnetic conductive component is made of amorphous nanocrystalline material.

[0007] In an embodiment of the present application, optionally, the placement panel is provided with a groove for placing the magnetic conductive member, the groove does not penetrate the placement panel, and the shape of the groove matches the shape of the magnetic conductive member.

[0008] In an embodiment of the present application, optionally, the placement panel is provided with a through groove for placing the magnetic conductive member, and the shape of the through groove matches the shape of the magnetic conductive member.

[0009] In an embodiment of the present application, optionally, the thickness of the magnetic conductive member is substantially equal to the height of the groove or the through slot.

[0010] In an embodiment of the present application, optionally, the magnetic conductive member is connected to the placement panel by bonding.

[0011] In an embodiment of the present application, optionally, the wireless charging device includes a plurality of charging coils, and the plurality of charging coils are arranged in sequence along the length direction of the wireless charging device, and the center positions of the plurality of charging coils correspond to the position of the magnetic conductive member.

[0012] In an embodiment of the present application, optionally, the wireless charging device further comprises a magnetic conductive sheet, wherein the magnetic conductive sheet is located below the charging coil, the magnetic conductive sheet is made of amorphous nanocrystalline material, and is a flat, hole-free one-piece structure, and the area of ​​the magnetic conductive sheet covers the charging coil.

[0013] In an embodiment of the present application, optionally, the wireless charging device is embedded in a vehicle.

[0014] Another aspect of the present application relates to a vehicle, comprising the wireless charging device according to any one of the foregoing contents. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The disclosure of the present application will become more easily understood with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present application. In addition, similar numbers in the drawings represent similar components, wherein:

[0016] Figure 1 A top view showing an embodiment of a wireless charging device of the present application;

[0017] Figure 2 An exploded view of an embodiment of a wireless charging device of the present application is shown. DETAILED DESCRIPTION

[0018] First of all, it should be noted that the following will illustrate the wireless charging device and vehicle composition, features and advantages according to the present application in an exemplary manner, but it should be understood that all descriptions are given for illustration only and should not be construed as forming any limitation on the present application. In this article, the technical terms "first" and "second" are only used for distinguishing purposes and are not intended to indicate their order and relative importance. The technical term "connected (or connected, etc.)" covers a specific component being directly connected to another component and / or indirectly connected to another component. In addition, unless otherwise expressly specified and limited, the dimensions, directions or positional relationships indicated by the technical terms "length", "width", "height", "upper", "top", "bottom" and the like are based on the dimensions, orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and cannot be understood as limitations on the present application.

[0019] In addition, for any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature shown or implied in the drawings, the present application still allows any combination or deletion between these technical features (or their equivalents) without any technical obstacles, thereby obtaining more other embodiments of the present application that may not be directly mentioned herein. In addition, general matters that are already known to those skilled in the art will not be repeated herein.

[0020] Electromagnetic induction is a commonly used charging solution in wireless charging devices. A charging coil is provided in the wireless charging device, and an alternating magnetic field is generated in the charging coil through an alternating current. When the receiving coil in the mobile phone (or other receiving device) enters this alternating magnetic field, a current is induced in the receiving coil, thereby realizing energy transmission. During the wireless charging process, energy loss is converted into heat, causing the device and the charging device to heat up. Excessive heat may affect the charging efficiency and the service life of the device. Due to the problem of charging efficiency, wireless charging is usually slower than wired charging.

[0021] In one embodiment of the present application, a wireless charging device is provided, such as Figure 1 As shown, a magnetic conductive member 20 is provided on the placement panel 10 of the wireless charging device. The placement panel 10 is generally oriented upward so that the mobile phone can be stably placed on the wireless charging device without other auxiliary fixing means. Of course, other orientations of the placement panel 10 are not excluded, and those skilled in the art can set it according to the use location and design purpose. The placement panel 10 is the surface that directly contacts the electronic device to be charged (such as a mobile phone, etc.). Figure 1 In the embodiment, the magnetic conductive member 20 placed on the panel 10 can be observed by the user. The magnetic conductive member 20 is made of a magnetic conductive material with low loss, high magnetic permeability, and high saturation magnetic induction intensity, such as an amorphous nanocrystalline material. Since the magnetic conductive member 20 is arranged between the charging coil of the wireless charging device and the electronic device, it can play a bridging role, extend the direction of the magnetic field, and effectively improve the heating and low efficiency of the electromagnetic induction charging method. In addition, Figure 1 As shown in , the magnetic conductive member 20 can be an annular structure. On the one hand, the high magnetic conductivity of the material of the magnetic conductive member 20 is utilized to concentrate the magnetic field at the magnetic conductive member 20. At the same time, the annular structure can reduce the formation of induced eddy currents, reduce energy loss and heat generation on the magnetic conductive member 20. Since the magnetic conductive member 20 is not of the same structure and material as the placement panel, it can also improve the recognition of the charging position, which helps to prompt the user to place the electronic device at the best charging position, that is, the magnetic conductive member 20. Figure 1 As shown in , the wireless charging logo can be set in the middle of the annular magnetic conductive member 20 to further indicate the position of the wireless charging. Figure 1The placement panel 10 of the embodiment is substantially rectangular in shape and is similar to the shape of a mobile phone and can be designed to be slightly larger than the size of a common mobile phone.

[0022] Figure 2 An embodiment of the wireless charging device of the present application is further illustrated by means of a decomposition diagram, in which the electronic device 90 takes a mobile phone as an example. The placement panel 10 is made of a non-metallic material, such as rubber or plastic, and its surface has a certain fine texture, so as to prevent the electronic device to be charged from slipping and stabilize the position of the electronic device during wireless charging. A fence is also provided around the placement panel 10, or in other words, the placement panel 10 has a downwardly concave structural design, which is conducive to the electronic device 90 remaining stable during the operation of the vehicle and will not slip or deviate excessively from the wireless charging position or the optimal wireless charging position. A top cover 30, a charging coil 40, a magnetic conductive sheet 50, a bracket 60 and a circuit board 70 are also provided below the placement panel 10. The charging coil 40 is also called a transmitting coil. Figure 2 In the embodiment in, the wireless charging device has three charging coils 40, which are arranged in sequence along one direction (for example, the length direction) of the device, and the charging coil in the middle partially overlaps with the charging coils on both sides. The edges of the charging coils on both sides are in contact, and the middle charging coil is located at the symmetric center of the charging coils on both sides. At this time, the center positions of the three charging coils coincide with the middle charging coil. In the case of this arrangement, the magnetic field strength at the middle charging coil is usually the highest. Setting the position of the magnetic conductive member 20 to correspond to the position of the middle charging coil can maximize the use of the magnetic field of the charging coil. The annular magnetic conductive member 20 gathers the magnetic field generated by the charging coil at the position of the magnetic conductive member. Compared with the divergent magnetic field, the magnetic field strength at the same height in the vertical direction is improved, which can improve the charging induction distance and efficiency.

[0023] The magnetic conductive member 20 is embedded in the placement panel 10. In order to install and fix the magnetic conductive member 20, a groove (not shown) can be provided on the placement panel 10, and the shape and size of the groove can be basically the same as or similar to the magnetic conductive member 20. The height of the groove does not need to penetrate the placement panel, and a certain thickness of the placement panel material can be left at the bottom to support the magnetic conductive member 20. Optionally, a through groove (not shown) can also be provided on the placement panel 10 to install the magnetic conductive member 20. If the through groove is provided, the thickness of the magnetic conductive member can reach the same thickness as the placement panel, and more height space can be reserved for the magnetic conductive member, that is, a thicker magnetic conductive member can be used, which helps to improve the effect of the magnetic conductive member 20, such as increasing the magnetic field strength, improving the charging efficiency, etc. The shape and size of the through groove can also be set to be basically the same as or similar to the magnetic conductive member 20. The magnetic conductive member 20 can be embedded in the placement panel 10 by various common methods in the art such as bonding.

[0024] like Figure 2 As shown in , the wireless charging device may further include a magnetic conductive sheet 50, which is located below the charging coil 40. The magnetic conductive sheet 50 may be made of amorphous nanocrystalline material that is the same or similar to the magnetic conductive member 20. The magnetic conductive sheet 50 is a flat, non-porous one-piece material, and it may substantially cover or exceed the total area of ​​the three charging coils 40. The magnetic conductive sheet 50 is made of amorphous nanocrystalline material. Compared with manganese-zinc ferrite, the magnetic saturation induction intensity can be increased by more than two times at the same thickness, which effectively improves the problem of disconnection caused by coil overcurrent protection due to magnetic saturation of the magnetic conductive sheet; and the magnetic field can be gathered to the magnetic conductive sheet 50, thereby increasing the magnetic field strength in the charging area and effectively increasing the charging distance; in addition, the magnetic conductive sheet 50 can also block the influence of the magnetic field on the lower circuit board 70, playing a role in magnetic isolation.

[0025] The technical solution of the wireless charging device in the present application can be used in vehicles, and of course it can also be used in wireless charging devices in other scenarios, both of which can achieve the technical effect of improving charging efficiency.

[0026] The specific embodiments described above in this application are only for more clearly describing the principles of this application, wherein each component is clearly shown or described to make the principles of this application easier to understand. Without departing from the scope of this application, those skilled in the art can easily make various modifications or changes to this application. Therefore, it should be understood that these modifications or changes should be included in the scope of patent protection of this application.

Claims

1. A wireless charging device, comprising a placement panel and a charging coil, wherein the charging coil is located below the placement panel, and the placement panel is configured to place an electronic device to be charged, characterized in that: An annular magnetic conductive member is arranged on the placement panel, the placement panel is made of non-metallic material, and the magnetic conductive member is embedded in the placement panel.

2. The wireless charging device according to claim 1, characterized in that: The magnetic conductive component is made of amorphous nanocrystalline material.

3. The wireless charging device according to claim 1, characterized in that: The placement panel is provided with a groove for placing the magnetic conductive member, the groove does not penetrate the placement panel, and the shape of the groove matches the shape of the magnetic conductive member.

4. The wireless charging device according to claim 1, characterized in that: The placement panel is provided with a through slot for placing the magnetic conductive member, and the shape of the through slot matches the shape of the magnetic conductive member.

5. The wireless charging device according to claim 3 or 4, characterized in that: The thickness of the magnetic conductive member is substantially equal to the height of the groove or the through slot.

6. The wireless charging device according to claim 1, characterized in that: The magnetic conductive member is connected to the placement panel by bonding.

7. The wireless charging device according to claim 1, characterized in that: The wireless charging device comprises a plurality of charging coils, which are arranged in sequence along the length direction of the wireless charging device, and the center positions of the plurality of charging coils correspond to the position of the magnetic conductive member.

8. The wireless charging device according to claim 1, characterized in that: The wireless charging device also includes a magnetic conductive sheet, which is located below the charging coil. The magnetic conductive sheet is made of amorphous nanocrystalline material and is a flat, hole-free one-piece structure. The area of ​​the magnetic conductive sheet covers the charging coil.

9. The wireless charging device according to claim 1, characterized in that: The wireless charging device is embedded in the vehicle.

10. A vehicle comprising the wireless charging device according to any one of claims 1 to 9.

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