Magnetic wireless charging device
By designing a magnetic wireless charging device, the problem of mobile phone misalignment in in-vehicle wireless charging devices is solved, enabling efficient and safe single-coil charging, reducing costs, integrating NFC functionality, and improving user experience.
Patent Information
- Application Number
- CN202520019688.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-01-03
AI Technical Summary
Existing in-vehicle wireless charging devices lack magnetic attraction, causing phones to easily fall out of position when the vehicle shakes, and require multiple coils to cover the charging area, increasing costs.
A magnetic wireless charging device was designed, comprising a mounting plate, a charging function board, a heat dissipation and fixing frame, a coil module, a magnetic ring, and a charging plate. It uses a magnetic structure to fix the mobile phone, uses a single coil for charging, and uses aluminum alloy material and thermal paste for heat dissipation. It also integrates NFC detection function.
It effectively secures the phone, preventing displacement, improving charging efficiency and safety, simplifying the structure, reducing costs, enhancing reliability and user experience, and integrating NFC functionality.
Smart Images
Figure CN223713664U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to vehicle-mounted charging technical field especially relates to a magnetic attraction wireless charging device. BACKGROUND
[0002] With the development of new energy vehicles, the number of available power supply for vehicles is increasing, and vehicle-mounted chargers are also developing simultaneously, from the original car charger 18W to the current wireless charging front module, which can be said to be developing rapidly, greatly improving user experience.
[0003] At present, due to the popularity of fast charging function, many mobile phone manufacturers use high-power 50W specifications for fast charging. This high-power fast charging increases the private protocol of major mobile phone brands on the basis of WPC1.2.4EPP 15W specification, and realizes wireless fast charging function with a maximum power of 50W. However, since the WPC1.2.4EPP 15W specification does not include magnetic attraction specification, many mobile phones supporting 50W fast charging do not have magnetic attraction function, which also leads to the fact that the current vehicle-mounted wireless charging front module does not have magnetic attraction function. Due to the lack of magnetic attraction function, the current vehicle-mounted wireless charging front module is prone to displacement when charging the mobile phone (i.e. displacement caused by vehicle shaking, etc.), which further leads to the fact that the current vehicle-mounted wireless charging front module needs to use multiple coils (such as three coils) to cover the wireless charging area as much as possible, resulting in waste of cost. SUMMARY
[0004] Therefore, the utility model provides a magnetic attraction wireless charging device to solve at least one of the above problems.
[0005] In order to achieve the above purpose, the utility model adopts the following scheme:
[0006] The utility model provides a magnetic attraction wireless charging device, the magnetic attraction wireless charging device includes: mounting disc, charging function board setting on mounting disc, heat dissipation fixed middle frame, coil module, magnet ring and charging disc, the mounting disc is provided with fixed part, the fixed part is used for fixing the magnetic attraction wireless charging device, the heat dissipation fixed middle frame is hollow design in the bottom, the charging function board sets up in the hollow position of the heat dissipation fixed middle frame, the heat dissipation fixed middle frame top has coil module installation site and magnet ring installation site, the coil module and the magnet ring are installed in the heat dissipation fixed middle frame top through the coil module installation site and the magnet ring installation site, the charging disc cover is set on the heat dissipation fixed middle frame, and is connected with the mounting disc.
[0007] As an embodiment of the utility model, the charging function board and the heat dissipation fixed middle frame are both fixed on the mounting disc.
[0008] As an embodiment of the utility model, the above-mentioned magnetic wireless charging device further comprises a protective shell; the protective shell is fixed on the mounting disc and arranged at the bottom region of the heat dissipation fixed middle frame, and the charging function plate is packaged in the hollow region of the heat dissipation fixed middle frame.
[0009] As an embodiment of the utility model, the heat dissipation part of the heat dissipation fixed middle frame is provided with heat dissipation paste.
[0010] As an embodiment of the utility model, the magnet ring has a gap, and the coil port part of the coil module is led out from the gap.
[0011] As an embodiment of the utility model, the coil module and the magnet ring each have two, the heat dissipation fixed middle frame top has two coil module installation positions and two magnet ring installation positions, and the two coil module installation positions and the two magnet ring installation positions are symmetrically arranged on the heat dissipation fixed middle frame top.
[0012] As an embodiment of the utility model, the above-mentioned magnetic wireless charging device further comprises an NFC detection plate, a contact window is arranged in the middle part of the heat dissipation fixed middle frame top, the NFC detection plate is sleeved on the heat dissipation fixed middle frame, and is electrically connected with the charging function plate through the contact window.
[0013] As an embodiment of the utility model, the charging function plate comprises a first magnetic wireless charging module, a second magnetic wireless charging module, an NFC module, a CAN module and a car-machine interconnection chip, the first magnetic wireless charging module and the second magnetic wireless charging module are arranged on the left and right sides of the charging function plate respectively, corresponding to the two coil modules, the NFC module, the CAN module and the car-machine interconnection chip are arranged in the middle region of the charging function plate.
[0014] As an embodiment of the utility model, the heat dissipation fixed middle frame is made of aluminum alloy material and is integrally die-cast; the protective shell is made of aluminum alloy material.
[0015] As an embodiment of the utility model, the charging disc surface is provided with anti-skid texture.
[0016] According to the above technical solution, the magnetic wireless charging device provided by the application can effectively fix the mobile phone in the charging area by setting the magnetic attraction structure and cooperating with the mobile phone with magnetic attraction function, so as to avoid displacement of the mobile phone during vehicle driving, thereby improving the charging efficiency and safety. Due to the introduction of magnetic attraction positioning, a single coil can realize efficient charging in a single charging area, without covering the charging area with multiple coils as in the prior art, thereby simplifying the structure and reducing the manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art. In the drawings:
[0018] Figure 1 is a structural schematic diagram of a magnetic wireless charging device provided by the embodiment of the present application;
[0019] Figure 2 is a structural schematic diagram of a heat dissipation fixed middle frame provided by the embodiment of the present application;
[0020] Figure 3 is a structural schematic diagram of a magnet ring provided by the embodiment of the present application;
[0021] Figure 4 is a module integration schematic diagram of a charging function plate provided by the embodiment of the present application. DETAILED DESCRIPTION
[0022] It should be noted that the terms "include" and any variations thereof in the specification and claims of the present application and the above drawings are intended to cover non-exclusive inclusion, for example, a process, method / process, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods / processes, products or devices.
[0023] In the present application, the terms "upper", "lower", "inner", "outer", "middle", "top" and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.
[0024] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific situation.
[0025] In addition, the terms "set", "connected" should be broadly understood. For example, "connected" can be fixed connection, detachable connection, or integral structure; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate media, or internal communication between two devices, elements or components. The specific meaning of the above terms in the utility model can be understood by the person skilled in the art according to the specific circumstances.
[0026] As Figure 1 The magnetic attraction wireless charging device provided by the embodiment of the application comprises a mounting disc 1, a charging function plate 2, a heat dissipation fixed middle frame 3, a coil module 4, a magnet ring 5 and a charging disc 6, wherein the charging function plate 2, the heat dissipation fixed middle frame 3, the coil module 4, the magnet ring 5 and the charging disc 6 are arranged on the mounting disc 1, specifically, arranged inside the shell of the mounting disc 1. In actual application, the magnetic attraction wireless charging device can be installed on the center console of the vehicle as a front-mounted module in the vehicle. The center console here usually refers to a region between the driver's seat and the front passenger's seat, which is a control area inside the vehicle.
[0027] The mounting disc 1 is provided with a fixing part for fixing the magnetic attraction wireless charging device, such as fixing the magnetic attraction wireless charging device on the center console of the vehicle through the fixing part. The mounting disc 1 is usually detachably connected with the center console, such as screw fixed connection or buckle type connection, and correspondingly, the fixing part has a screw hole or a buckle joint.
[0028] As Figure 2 The heat dissipation fixed middle frame 3 is designed with a hollow bottom, and the charging function plate 2 is arranged in the hollow part of the heat dissipation fixed middle frame 3. The charging function plate 2 and the heat dissipation fixed middle frame 3 are both fixed on the mounting disc 1. The charging function plate 2 can be fixed on the mounting disc 1 by bolts, and the heat dissipation fixed middle frame 3 can also be fixed on the mounting disc 1 by the bolt fixing feet in the heat dissipation fixed middle frame 3. Figure 2 As Figure 2 It can be seen that the heat dissipation fixed middle frame 3 has a coil module mounting position and a magnet ring mounting position on the top, and the coil module 4 and the magnet ring 5 are mounted on the top of the heat dissipation fixed middle frame 3 through the coil module mounting position and the magnet ring mounting position, and the magnet ring 5 surrounds the coil module 4.
[0029] Preferably, the heat dissipation fixed middle frame 3 of the present application is used to dissipate heat for the magnetic wireless charging device by adding heat dissipation paste, and the heat dissipation paste is arranged at the heat dissipation part of the heat dissipation fixed middle frame 3. Specifically, the heat dissipation part includes the contact surface between the charging function board 2 and the heat dissipation fixed middle frame 3, and the contact surface between the coil module 4 and the heat dissipation fixed middle frame 3. The contact surface between the charging function board 2 and the heat dissipation fixed middle frame 3 is the main heat dissipation path. Since the electronic elements (such as master control chip, power device, etc.) on the charging function board 2 will generate a large amount of heat, heat dissipation paste needs to be applied between these elements and the heat dissipation fixed middle frame 3 to improve the heat conduction efficiency. Specifically, the heat dissipation paste can be applied to the parts corresponding to the elements that generate a large amount of heat, such as master control chip, power inductor, MOSFET, etc. Although the coil module 4 may not generate as much heat as the charging function board 2, heat will still be generated when current flows through the coil. Therefore, in order to improve the heat dissipation effect, heat dissipation paste can also be applied to the contact surface between the coil module 4 and the heat dissipation fixed middle frame 3. The heat dissipation paste can be selected from high-thermal-conductivity silicone grease or phase-change material, etc. Of course, in addition to adding heat dissipation paste for heat dissipation, the heat dissipation fixed middle frame 3 can also be cooled by increasing the number of heat dissipation fins or attaching a graphene heat dissipation film.
[0030] Preferably, the heat dissipation fixed middle frame 3 of the present application can be made of aluminum alloy material and is formed by one-piece die casting. When the heat dissipation fixed middle frame 3 is made of aluminum alloy material, the aluminum alloy material can be subjected to anodic oxidation treatment to form a dense aluminum oxide film on the surface of the aluminum alloy material, which can improve the wear resistance and corrosion resistance. The one-piece die casting process can reduce the number of parts, improve the assembly efficiency of the magnetic wireless charging device, and enhance the structural strength.
[0031] Preferably, the heat dissipation fixed middle frame 3 of the present application can be matched with a protective shell 7, which is arranged at the bottom area of the heat dissipation fixed middle frame 3 to encapsulate the charging function board 2 in the hollow area at the bottom of the heat dissipation fixed middle frame 3, and the protective shell 7 is also fixed on the mounting disc 1.
[0032] The protective shell 7 can be fixed on the bottom of the heat dissipation fixed middle frame 3 by means of screws, buckles or adhesives, etc. The hollow area at the bottom of the heat dissipation fixed middle frame 3 needs to be accurately designed according to the size and shape of the charging function board 2 to ensure that the charging function board 2 can be completely put into it and tightly fit with the protective shell 7. In this embodiment, heat dissipation paste or heat-conducting pads can be added between the protective shell 7 and the charging function board 2 to further improve the heat conduction efficiency. Similar to the heat dissipation fixed middle frame 3, the surface of the protective shell 7 can also be subjected to anodic oxidation treatment to improve the wear resistance, corrosion resistance and aesthetic appearance.
[0033] The protective shell 7 is arranged at the bottom of the heat dissipation fixed middle frame 3, and can completely encapsulate the charging functional board 2 in the hollow area at the bottom of the heat dissipation fixed middle frame 3, so as to effectively protect the charging functional board 2 from external force impact, dust, liquid and the like, and improve the reliability and service life of the product.
[0034] Preferably, the protective shell 7 is made of aluminum alloy material. The aluminum alloy material has good heat conductivity, and the protective shell 7 is tightly matched with the heat dissipation fixed middle frame 3, so as to increase the heat dissipation area, further improve the heat dissipation efficiency, and form an integrated heat dissipation structure with the heat dissipation fixed middle frame 3. Moreover, the protective shell 7 made of aluminum alloy can play an electromagnetic shielding role, reduce the electromagnetic interference of the charging functional board 2 on the outside and the electromagnetic radiation of the charging functional board 2 on the outside, and thus improve the efficiency and stability of wireless charging. In summary, by adding the protective shell 7 made of aluminum alloy material, the protection performance of the product can be improved, and the heat dissipation effect can be enhanced, so that the product is safer and more reliable.
[0035] Preferably, as shown in Figure 3 , the magnet ring 5 has a notch 11, and the coil port part of the coil module 4 is led out from the notch 11. The magnet ring 5 can be an integrally formed magnet or a magnet array composed of a plurality of magnets with an arc. During installation, the position of the notch 11 of the magnet ring 5 can be adjusted according to actual needs. Specifically, the notch can be arranged at a position most convenient for leading out the coil port according to the layout and wiring mode of the coil module 4.
[0036] Further preferably, the magnet ring 5 in the embodiment is adjustable, and can be adjusted according to the magnetic attraction strength of different mobile phones, so as to improve the charging efficiency and stability. If the magnet ring 5 is an electromagnet, the magnetic field strength can be adjusted by changing the current size. If the magnet ring 5 is a combined magnet ring, the magnetic field strength can be adjusted by replacing magnet modules with different magnetic force strengths.
[0037] Preferably, the coil module 4 and the magnet ring 5 each have two in the embodiment, and correspondingly, the heat dissipation fixed middle frame 3 has two coil module installation positions and two magnet ring installation positions at the top thereof, which are symmetrically arranged at the top of the heat dissipation fixed middle frame 3, i.e., as shown in the layout of Figure 2 .
[0038] Preferably, as shown in Figure 1 , the magnetic attraction wireless charging device in the embodiment can further include an NFC detection board 8, and a contact window 9 is arranged at the middle part of the top of the heat dissipation fixed middle frame 3 (as shown in Figure 2As shown, the NFC detection plate 8 is sleeved on the heat dissipation fixed middle frame 3 and is electrically connected with the charging function plate 2 through the contact window 9. For example, the charging function plate 2 has a contact point structure at the contact window 9, and the NFC detection plate 8 has an elastic sheet structure at the corresponding part. When the NFC detection plate 8 is sleeved on the heat dissipation fixed middle frame 3, the elastic sheet structure can be in contact with the contact point structure, so as to realize the electrical connection of the two.
[0039] Corresponding to the NFC detection plate 8, the charging function plate 2 has an NFC module, and the two can realize the detection function of the integrated smart card key. This is particularly useful in new energy vehicles. The user can perform identity authentication on the NFC detection plate 8 to start the vehicle or perform other operations.
[0040] Preferably, as shown, Figure 4 As shown, it is a module integration diagram of the charging function plate 2 provided by the embodiment of the application, which includes a first magnetic attraction wireless charging module, a second magnetic attraction wireless charging module, an NFC module, a CAN module and a car-machine interconnection chip. The first magnetic attraction wireless charging module and the second magnetic attraction wireless charging module are respectively arranged on the left and right sides of the charging function plate 2 and correspond to the two coil modules 4. The NFC module, the CAN module and the car-machine interconnection chip are arranged in the middle region of the charging function plate 2.
[0041] This layout can more effectively utilize the space of the charging function plate 2, and the arrangement of each module is more compact and reasonable, so that double charging can be realized in one magnetic attraction wireless charging device.
[0042] The charging disc 6 is covered on the heat dissipation fixed middle frame 3 and is fixedly connected with the mounting disc 1. The shape of the charging disc 6 can be optimized according to the shape and size of the mobile phone, such as circular, square, oval and the like, so as to better fit the mobile phone and improve the charging efficiency. The charging disc 6 can also be provided with an indicator light for displaying the charging state, such as charging, charging completion and the like.
[0043] Preferably, the material of the charging disc 6 of the embodiment can be made of PVC material, and a suede is covered on the surface thereof, so as to play a decorative and anti-slip effect.
[0044] Further preferably, the material of the charging disc 6 of the embodiment can also be made of a single material such as PVC, silica gel and TPU, but a non-slip texture is formed on the surface thereof to enhance the anti-slip effect. On the basis of magnetic attraction, the stability of the charged mobile phone is further ensured.
[0045] From the above technical solutions, the magnetic wireless charging device provided by the application can effectively fix the mobile phone in the charging area by setting the magnetic attraction structure and cooperating with the mobile phone with magnetic attraction function, so as to avoid displacement of the mobile phone during vehicle driving, thereby improving charging efficiency and safety. Due to the introduction of magnetic attraction positioning, a single charging area only needs a single coil to achieve efficient charging, without using multiple coils to cover the charging area as in the prior art, thereby simplifying the structure and reducing the manufacturing cost. In addition, the aluminum alloy middle frame is combined with the heat dissipation paste for heat dissipation in the application scheme, without the need for additional fans or refrigeration units, which not only reduces the cost, but also improves the reliability, avoids the interference caused by fan noise, and improves the user experience. Finally, the application scheme also integrates the NFC function, which can be used for detecting the intelligent card key of the new energy vehicle, thereby further enhancing the practicality.
[0046] The above specific embodiments further illustrate the purpose, technical solutions and advantages of the application, and it should be understood that the above only refers to specific embodiments of the application and does not limit the protection scope of the application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the application shall be included in the protection scope of the application.
Claims
1. A magnetic wireless charging device, characterized in that, The magnetic wireless charging device comprises: a mounting disc, a charging functional board arranged on the mounting disc, a heat dissipation fixed middle frame, a coil module, a magnet ring and a charging disc; The mounting disc is provided with a fixing member for fixing the magnetic wireless charging device, the heat dissipation fixed middle frame is designed with a hollow bottom, the charging functional board is arranged at the hollow part of the heat dissipation fixed middle frame, the heat dissipation fixed middle frame is provided with coil module mounting positions and magnet ring mounting positions on the top, the coil module and the magnet ring are mounted on the top of the heat dissipation fixed middle frame through the coil module mounting positions and the magnet ring mounting positions, and the charging disc is arranged on the heat dissipation fixed middle frame and connected with the mounting disc. 2.The magnetic wireless charging device of claim 1, wherein, The charging functional board and the heat dissipation fixed middle frame are fixed on the mounting disc. 3.The magnetic wireless charging device of claim 1, wherein, The magnetic wireless charging device further comprises a protective shell. The protective shell is fixed on the mounting disc and arranged at the bottom region of the heat dissipation fixed middle frame to encapsulate the charging functional board in the hollow region of the heat dissipation fixed middle frame. 4.The magnetic wireless charging device of claim 1, wherein, The heat dissipation part of the heat dissipation fixed middle frame is provided with heat dissipation paste. 5.The magnetic wireless charging device of claim 1, wherein, The magnet ring is provided with a notch, and the coil port part of the coil module is led out from the notch. 6.The magnetic wireless charging device of claim 1, wherein, The coil module and the magnet ring are each provided with two, and the top of the heat dissipation fixed middle frame is provided with two coil module mounting positions and two magnet ring mounting positions, which are symmetrically arranged on the top of the heat dissipation fixed middle frame. 7.The magnetic wireless charging device of claim 6, wherein, The magnetic wireless charging device further comprises an NFC detection board, the top of the heat dissipation fixed middle frame is provided with a contact window in the middle part, the NFC detection board is sleeved on the heat dissipation fixed middle frame and electrically connected with the charging functional board through the contact window. 8.The magnetic wireless charging device of claim 7, wherein, The charging functional board comprises a first magnetic wireless charging module, a second magnetic wireless charging module, an NFC module, a CAN module and a car-machine interconnection chip, the first magnetic wireless charging module and the second magnetic wireless charging module are arranged on the left and right sides of the charging functional board respectively and correspond to the two coil modules, the NFC module, the CAN module and the car-machine interconnection chip are arranged in the middle region of the charging functional board. 9.The magnetic wireless charging device of claim 3, wherein, The heat dissipation fixed middle frame is made of aluminum alloy material and formed by one-piece die casting; The protective shell is made of aluminum alloy material. 10.The magnetic wireless charging device of claim 1, wherein, The surface of the charging disc is provided with anti-slip texture.