Wireless charging adapter, wireless charging assembly, and vehicle

Abstract

The present application relates to the technical field of wireless charging, and specifically provides a wireless charging adapter, a wireless charging assembly, and a vehicle, aiming at allowing a wireless charging apparatus of a vehicle to more quickly and easily use an MPP protocol. To achieve this objective, in the wireless charging adapter of the present application, a charging receiver coil is used for receiving a varying magnetic field emitted by a device under conversion and generating an alternating current; a charging receiver controller is connected to the charging receiver coil, and is used for converting an alternating current into a direct current and communicating with the device under conversion by means of a first protocol; the charging receiver controller is connected to a charging transmitter controller; the charging transmitter controller is connected to a charging transmitter coil, and is used for converting a direct current into an alternating current and communicating with the device under conversion by means of a second protocol; and the charging transmitter coil is used for converting an alternating current into a varying magnetic field and providing the varying magnetic field to the device under conversion. The present application can quickly use a new protocol, thereby improving the charging efficiency of mobile phones.

Description

Wireless charging adapter, wireless charging component, vehicle This application claims priority to Chinese patent application CN 202410383947.9, filed on March 29, 2024, with the invention name “Wireless Charging Adapter, Wireless Charging Component, Vehicle”. The entire contents of the above Chinese patent application are incorporated into this application by reference. Technical Field

[0001] The present application relates to the field of wireless charging technology, and specifically provides a wireless charging adapter, a wireless charging component, and a vehicle. Background Art

[0002] The WPC (Wireless Power Consortium) has released the Qi2.0 wireless charging standard, which adds the MPP (MAGNETIC POWER PROFILE) magnetic wireless charging protocol standard. Prior to this, some mobile phone models (such as iPhone, Samsung, Google, etc.) usually used the EPP (Extended power profile) protocol for charging. Taking the iPhone as an example, it can only achieve 7.5W charging through the EPP protocol. With the update of MPP, some models of mobile phones such as the iPhone can double the power, supporting a maximum power of 15W. Moreover, with the opening of Qi2.0 certification, the proportion of mobile phones on the market that support MPP magnetic charging will increase.

[0003] The technology for equipping existing vehicles with on-board wireless charging devices is also relatively mature. In the design of new vehicles, devices related to the MPP protocol can be placed to facilitate more models to match 15W fast charging in the future, avoiding the dilemma that some mobile phones can only achieve 7.5W charging.

[0004] However, for old users who have already purchased the car, since the built-in equipment in their vehicle only supports the EPP protocol and cannot support the MPP protocol, in order to enjoy this power increase, they need to upgrade the hardware to support the MMP protocol. Users have to modify the vehicle's on-board wireless charging device. Whether going to a 4S store or other repair shop, the modification of the vehicle will leave more or less modification traces, resulting in an increase in potential hidden dangers such as short circuits. In addition, for users, the time cost and modification cost are relatively high, which hinders users from using new technologies.

[0005] Of course, wireless charging devices are not limited to in-vehicle wireless charging devices. The same problem also exists in other application scenarios equipped with wireless charging devices. For example, home wireless charging desktops (such as computer desks) and other application scenarios all need to replace new equipment. However, wireless charging desktops and in-vehicle wireless charging devices are relatively expensive, which becomes a problem facing users.

[0006] Accordingly, how to enable wireless charging devices in vehicles of older users or other application scenarios to use the MPP protocol more quickly and easily, thereby improving the charging efficiency of some devices while keeping the cost low, is a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Invention

[0007] This application aims to solve the above technical problems, that is, how to enable wireless charging devices in vehicles of old users or other application scenarios to use the MPP protocol more quickly and easily, improve the charging efficiency of some equipment, and at a lower cost.

[0008] In a first aspect, the present application provides a wireless charging adapter, comprising a housing, a chamber disposed within the housing, a charging transmitter coil, a circuit board assembly, and a charging receiver coil disposed within the chamber, the circuit board assembly comprising a charging transmitter controller, a master controller, and a charging receiver controller;

[0009] The charging receiving end coil is used to receive the changing magnetic field emitted by the device to be converted and to generate alternating current;

[0010] The charging receiving end controller is connected to the charging receiving end coil, and is used to convert alternating current into direct current and communicate with the device to be converted through a first protocol;

[0011] The charging receiving end controller is connected to the charging transmitting end controller;

[0012] The charging transmitter controller is connected to the charging transmitter coil, and is used to convert direct current into alternating current and to communicate with the device to be charged through a second protocol;

[0013] The charging transmitting end coil is used to convert alternating current into a changing magnetic field and provide the changing magnetic field to the device to be charged;

[0014] The main controller is in communication with the charging transmitter controller and the charging receiver controller respectively.

[0015] By adopting the above technical solution, this application can avoid vehicle modification and enable vehicles that need to be upgraded to use the latest charging protocol, thereby improving the charging efficiency of some mobile phones.

[0016] For the above-mentioned wireless charging adapter, in a possible embodiment, a first tray and a bracket are further provided in the shell, a receiving groove is provided in the middle part of the bracket, the charging transmitting end coil is provided in the first tray, the circuit board assembly is provided in the receiving groove, and the charging receiving end coil is provided between the bottom of the shell and the bracket, so that the devices in the shell are arranged in sequence from top to bottom: charging transmitting end coil, first tray, bracket, circuit board assembly, charging receiving end coil.

[0017] When the above technical solution is adopted, the wireless charging adapter of the present application is made thinner through the overlapping design of the receiving groove and the circuit board assembly.

[0018] For the above-mentioned wireless charging adapter, in a possible embodiment, a first magnetic isolation member is further provided in the shell, the first magnetic isolation member is provided with a first groove facing the first surface of the shell, the charging transmitting end coil is provided in the first groove, and the first magnetic isolation member is provided in the first tray; wherein, the first surface of the shell is the surface close to the device to be charged.

[0019] For the above-mentioned wireless charging adapter, in a possible embodiment, a second magnetic shielding member is further provided in the shell, and the second magnetic shielding member is provided with a second groove facing the second surface of the shell, the charging receiving end coil is provided in the groove, and the second magnetic shielding member is provided between the bottom of the shell and the bracket; wherein, the second surface of the shell is the surface close to the device to be converted.

[0020] For the above-mentioned wireless charging adapter, in a possible embodiment, a first through hole is provided on the first magnetic isolation member, and the first through hole is provided on the side wall of the first groove, or on the edge of the first magnetic isolation member; a second through hole is provided on the second magnetic isolation member, and the second through hole is provided on the side wall of the second groove, or on the edge of the second magnetic isolation member.

[0021] When using the above technical solution, the design of the first and second magnetic shielding members minimizes the interaction between the charging transmitter coil and the charging receiver coil during use of the product of this application, and controls the magnetic field within the product. Furthermore, the first magnetic shielding member overlaps with the first tray and the charging transmitter coil, and the second magnetic shielding member overlaps with the charging receiver coil, making the overall product thinner. The edge design of the first and second through-holes reduces magnetic flux leakage.

[0022] Regarding the above-mentioned wireless charging adapter, in a possible implementation manner, a magnetic attraction portion is further provided on the edge of the charging transmitter coil in the first tray.

[0023] For the above-mentioned wireless charging adapter, in one possible embodiment, the first tray is provided with a step, and the magnetic attraction portion is provided above the step so that the height of the magnetic attraction portion is higher than the height of the charging transmitter coil, and the magnetic attraction portion at least partially overlaps with the height direction of the charging transmitter coil in the height direction.

[0024] For the above-mentioned wireless charging adapter, in one possible embodiment, the magnetic attraction portion includes a first magnet unit and a second magnet unit, the N / S poles of the first magnet unit and the S / N poles of the second magnet unit are attracted and connected to each other, and multiple groups of first magnet units and second magnet units are connected end to end to form the magnetic attraction portion.

[0025] When adopting the above technical solution, the design of the magnetic attraction part not only fixes the mobile phone more firmly, but also reduces the magnetic disturbance between them. The overlap of the magnetic attraction part and the charging transmitter coil also makes the overall device thinner, easier to tighten the cover, and has lower precision requirements.

[0026] For the above-mentioned wireless charging adapter, in a possible implementation manner, a capacitor is further provided on the side of the bracket, and the capacitor is arranged side by side with the accommodating groove.

[0027] When the above technical solution is adopted, the overlap of the capacitor, the receiving slot, and the circuit board assembly makes the wireless charging adapter of the present application thinner.

[0028] For the above-mentioned wireless charging adapter, in a possible implementation manner, a second tray is further provided in the housing, and the circuit board assembly is disposed in the receiving slot via the second tray.

[0029] For the above-mentioned wireless charging adapter, in a possible implementation manner, an intermediate support cover is further provided between the second tray and the first tray, and the intermediate support cover is provided on the second tray.

[0030] For the above-mentioned wireless charging adapter, in a possible embodiment, a protrusion is provided on the first tray facing the second surface of the shell, and an insertion hole is correspondingly provided on the middle support cover, and the protrusion is inserted into the insertion hole so that there is no relative displacement between the first tray and the middle support cover.

[0031] For the above-mentioned wireless charging adapter, in a possible embodiment, an intermediate base is further provided below the second tray, a stepped platform is further provided in the accommodating groove of the bracket, the intermediate base is provided on the stepped platform, and the second tray is provided on the intermediate base.

[0032] With this technical solution, the magnetic shielding design of the second tray and the intermediate support cover enhances overall magnetic shielding. The protrusions and insertion holes in the intermediate support cover and the first tray eliminate the need for adhesive layers, making the product thinner, easier to assemble, and more secure. The intermediate base and stepped platform design allows for more accurate determination of the second tray's overlap, facilitating quality control and resulting in a thinner product.

[0033] For the above-mentioned wireless charging adapter, in a possible implementation manner, the housing includes a base and a pressing cover, and the base is fixedly connected to the pressing cover.

[0034] For the above-mentioned wireless charging adapter, in a possible implementation manner, an exterior cover is further provided on the outer side of the compression cover.

[0035] When adopting the above technical solution, the appearance cover and the pressing cover are designed separately, so that they can respectively respond to different technical problems, so that the top can be stably pressed by the hard pressing cover, and can also play an anti-slip role through the soft rubber appearance cover.

[0036] For the above-mentioned wireless charging adapter, in a possible implementation, the charging transmitter coils are provided in multiple groups, the multiple groups of charging transmitter coils are arranged side by side in the first tray, and the multiple groups of charging transmitter coils are arranged in parallel.

[0037] When the above technical solution is adopted, multiple groups of charging transmitter coils are arranged side by side and connected in parallel, which can realize multiple charging positions at the same time, facilitating the charging of multiple identical or different devices.

[0038] In addition, the present application also provides a wireless charging component, which includes a wireless charging device and a wireless charging adapter according to any one of the above technical solutions.

[0039] In addition, the present application also provides a vehicle, which is equipped with a wireless charging adapter according to any one of the above technical solutions, and the device to be converted is a vehicle-mounted wireless charging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The following describes the embodiments of the present application with reference to the accompanying drawings, in which:

[0041] FIG1 is one of the application scenarios of the wireless charging adapter of the present application;

[0042] FIG2 is a schematic diagram of the principle of the wireless charging adapter of the present application;

[0043] FIG3 is a schematic structural diagram of the wireless charging adapter of the present application;

[0044] FIG4 is an exploded view of the structure of the wireless charging adapter of the present application;

[0045] FIG5 is a top view of the wireless charging adapter of the present application;

[0046] FIG6 is a cross-sectional view of FIG5 at AA;

[0047] FIG7 is an enlarged view of point B in FIG6;

[0048] FIG8 is a schematic diagram of the assembly of the first tray and the middle support cover;

[0049] FIG9 is a schematic structural diagram of a bracket;

[0050] FIG10 is a schematic structural diagram of a first magnetic shielding member;

[0051] FIG11 is a schematic structural diagram of the second magnetic shielding member.

[0052] List of reference numerals:

[0053] 01-housing; 011-base; 012-pressing cover; 013-appearance cover; 014-chamber; 015-first surface; 016-second surface;

[0054] 02-Charging transmitter coil;

[0055] 03-Circuit board assembly;

[0056] 04-Charging receiving end coil;

[0057] 05-first tray; 051-step; 052-protrusion; 053-first line hole;

[0058] 06-second tray;

[0059] 07-bracket; 071-accommodation slot; 0711-step platform;

[0060] 08-first magnetic isolation member; 081-first groove; 0811-first through hole;

[0061] 09-second magnetic isolation member; 091-second groove; 0911-second through hole;

[0062] 10-middle support cover; 101-insertion hole; 102-second line hole;

[0063] 11-middle bottom support;

[0064] 12-magnetic attraction portion; 121-first magnet unit; 122-second magnet unit; 123-backing ring;

[0065] 13-Capacitor. DETAILED DESCRIPTION

[0066] The following describes the embodiments of the present application with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. For example, although this embodiment is described with the wireless charging device as an example of a vehicle-mounted wireless charging device, it is obvious that the wireless charging adapter of the present application can also transfer other known wireless charging devices, such as desktop wireless charging devices, etc., and is not limited to vehicle-mounted wireless charging devices.

[0067] It should be noted that in the description of this application, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, it should not be understood as limiting this application. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0068] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "installed," "set," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0069] The following takes the wireless charging device of a vehicle as an example, and the device to be charged as a mobile phone as an example to elaborate on the solution of this application in detail.

[0070] Figure 1 shows one of the main application scenarios of the wireless charging adapter of this application, which is to set it between an in-vehicle wireless charging device and a mobile phone, and change the protocol through the wireless charging adapter, ultimately increasing the charging power of the mobile phone. It is understood that the charging devices of this application are not limited to mobile phones, but can also include tablets, laptops, handheld mobile stations, walkie-talkies and other mobile devices with wireless charging functions.

[0071] In combination with Figures 2 to 6, a possible specific implementation method of the wireless charging adapter of the present application is expanded, wherein the various devices within the dotted box in Figure 2 and their connection relationships and functions together constitute the wireless charging adapter of the present application, and demonstrate the working principle of the wireless charging adapter of the present application.

[0072] In a possible specific embodiment of the wireless charging adapter provided by the present application, as shown in the figure, the wireless charging adapter of the present application includes a housing 01, a chamber 014 is provided within the housing 01, and a charging transmitter coil 02, a circuit board assembly 03, and a charging receiver coil 04 are provided within the chamber 014. The circuit board assembly 03 includes a charging transmitter controller, a master controller, and a charging receiver controller. It should be noted that the circuit board assembly 03 mentioned in the present application includes the charging transmitter controller, the master controller, and the charging receiver controller. However, this circuit board assembly 03 does not only include these three components in a narrow sense. These three components are mainly named based on their functions. They can not only be independent charging transmitter controllers, master controllers, and charging receiver controllers, but also an integrated controller integrated on a single circuit board to perform the functions of these three components. This all-in-one controller can also perform the functions of the above three controllers and also belongs to the circuit board assembly 03 mentioned in the present application. In other words, the circuit board assembly 03 of the present application is not limited to three controllers, but is a circuit board assembly 03 of a controller that can perform these functions. It should also be noted that, taking the charging transmitter controller as an example, the charging transmitter controller can be a set of control circuits including a charging transmitter chip, which can implement second protocol communication with the mobile phone and can be connected to the charging transmitter coil 02 to convert DC power into AC power. It can be implemented using known existing technologies. For example, the charging transmitter controller mainly includes structural modules such as a full-bridge module, a filter module, a resonant circuit control module, and a communication protocol module. The circuits that can implement the communication functions and DC-to-AC conversion functions of the charging transmitter controller are technical solutions well known to those skilled in the wireless charging field and will not be elaborated in detail. Similarly, those skilled in the art can implement the circuit board assembly 03 by combining the functions of the charging transmitter controller, the master controller, and the charging receiver controller described in this application through existing technologies. The focus of this application is not on the implementation of the functions of the three controllers alone, but on how to connect these controllers and achieve complete coordination between all control components and execution components to ultimately produce the wireless charging adapter of this application. Therefore, the specific components of the charging transmitter controller, the master controller, and the charging receiver controller will not be described in detail.

[0073] The charging receiving end coil 04 is used to receive the changing magnetic field emitted by the device to be converted (such as a vehicle-mounted wireless charging device) and to generate alternating current. The charging receiving end controller is connected to the charging receiving end coil 04 and is used to convert the alternating current into direct current and to communicate with the device to be converted using the first protocol. Specifically, the charging receiving end controller, as the part that interfaces with the vehicle's wireless charging device, communicates with the vehicle's wireless charging device through the first protocol, so that the changing magnetic field emitted by the vehicle's wireless charging device can be converted into alternating current by the charging receiving end coil 04, and then the alternating current is converted into direct current by the charging receiving end controller to perform the next step. Among them, the first protocol can be the EPP protocol, or other vehicle-built-in wireless charging protocols. In this application, the changing magnetic field generated by the device to be converted or the charging transmitting end coil can be an alternating electromagnetic field, and energy transmission in the wireless charging process can be achieved with the help of the changing magnetic field.

[0074] The charging receiver controller is connected to the charging transmitter controller. This connection can be direct or indirect via a power conversion chip (DC / DC chip). The charging transmitter controller is used to convert the direct current received from the charging receiver controller into alternating current with the required specific voltage and current.

[0075] The charging transmitter controller is connected to the charging transmitter coil 02, and is used to convert direct current into alternating current, and transmit it to the charging transmitter coil 02, and is used to communicate with the device to be charged using the second protocol. Specifically, the charging transmitter controller transmits alternating current to the charging transmitter coil 02, so that the charging transmitter coil 02 generates a changing magnetic field, and the charging transmitter controller, as the part that interfaces with the mobile phone, communicates with the mobile phone through the second protocol. In this case, the second protocol can be the MPP protocol (for example, the latest version of the MPP protocol), so that the changing magnetic field emitted by the charging transmitter coil 02 can be received by the mobile phone, and then converted into charging power by the mobile phone. During this period, since the charging transmitter controller and the mobile phone can communicate and interact using the MPP protocol, as an intermediate transition, even if the vehicle's wireless charging device is not updated, mobile phones compatible with the second protocol can be charged, thereby improving the charging efficiency of some mobile phones including iPhones. Of course, the second communication protocol can also be other protocols, not limited to the MPP protocol, as long as it can be adapted to the device to be charged. Optionally, as shown in FIG1 , multiple groups of charging transmitter coils 02 may be provided, and the multiple groups of charging transmitter coils 02 are arranged in parallel, so that simultaneous charging of multiple locations and multiple different products can be achieved.

[0076] The main controller is respectively connected to the charging transmitter controller and the charging receiver controller for overall detection of voltage stability, ensuring smooth communication management, and controlling the overall output stability of the charging transmitter controller and the charging receiver controller.

[0077] At this point, the working principle and main structural components of the wireless charging adapter of the present application have been expanded. The wireless charging adapter of the present application can be directly purchased and attached to the vehicle for use without modifying the vehicle. It can be fixed by gluing or snapping, which has low overall cost and is more convenient. However, due to the limited application space of the product in different occasions, for example, it is necessary to stack a wireless charging adapter on top of the wireless charging device of the vehicle for use. In this case, the thickness requirements of the wireless charging adapter will be very strict. Based on this problem, the present application proposes multiple technical solutions to achieve thickness control. The following continues to combine a possible specific implementation method to fully expand the structural solution of the wireless charging adapter of the present application.

[0078] It should be noted that the present application adopts a design of multiple overlapping technical structures to reduce the thickness. The overlap in the present application means that as shown in Figures 6 and 7, in the Z direction of the thickness direction, the charging transmitter coil 02 and the first magnet unit 121 have an overlapping L2 part in the Z direction, and a non-overlapping L1 part. This is explained here as partial overlap (L2) between the charging transmitter coil 02 and the first magnet unit 121. If L1 = 0, there is a complete overlap, and if L2 = 0, there is no overlap.

[0079] As shown in Figures 3 to 6, a first tray 05 and a bracket 07 are also provided within the housing 01. A receiving groove 071 is provided in the middle portion of the bracket 07. The charging transmitter coil 02 is provided within the first tray 05, the circuit board assembly 03 is provided within the receiving groove 071, and the charging receiver coil 04 is provided between the bottom of the housing 01 and the bracket 07. This allows the devices within the housing 01 to be arranged from top to bottom in the following order: charging transmitter coil 02, first tray 05, bracket 07, circuit board assembly 03, and charging receiver coil 04. It should be noted that the term "from top to bottom" in this application refers to the direction from the first surface 015 to the second surface 016 in the Z-direction in Figure 6, which is also the thickness direction of the wireless charging adapter of this application.

[0080] Compared to simply arranging the charging transmitter coil 02, first tray 05, circuit board assembly 03, bracket 07, and charging receiver coil 04 in a non-overlapping sequence, this application provides a receiving slot 071 in the middle of bracket 07 and positions the circuit board assembly 03 within this slot. This allows for partial or full overlap between the circuit board assembly 03 and bracket 07, reducing the overall thickness of the wireless charging adapter. Furthermore, positioning the charging transmitter coil 02 within the first tray 05 also allows for partial or full overlap between the charging transmitter coil 02 and the first tray 05, further reducing the overall thickness of the wireless charging device.

[0081] Continuing with Figures 2 to 6, 10, and 11, specifically, a first magnetic shielding member 08 is further disposed within the housing 01. The first magnetic shielding member 08 has a first groove 081 disposed on the first surface 015 of the housing 01. The charging transmitter coil 02 is disposed within the first groove 081. The first magnetic shielding member 08 is disposed within the first tray 05. The first surface 015 of the housing 01 is the surface closest to the device to be charged (the mobile phone). The first magnetic shielding member 08 has a first through-hole 0811 disposed on the sidewall of the first groove 081 or on the edge of the first magnetic shielding member 08. The housing 01 also has a second magnetic shielding member 09 disposed within the second surface 016 of the housing 01. The charging receiver coil 04 is disposed within the groove. The second magnetic shielding member 09 is disposed between the bottom of the housing 01 and the bracket 07. The second surface 016 of the housing 01 is the surface closest to the device to be charged (the vehicle's wireless charging device). The second magnetic isolation member 09 is provided with a second through hole 0911 . The second through hole 0911 is provided on a side wall of the second groove 091 , or at an edge of the second magnetic isolation member 09 .

[0082] Since both the first surface 015 and the second surface 016 of the product need to conduct electromagnetic induction with external equipment, preventing the two from interfering with each other is something that the wireless charging adapter of this application needs to focus on. Therefore, the design of the first magnetic isolation member 08 and the second magnetic isolation member 09 can isolate the magnetic field at the charging transmitter coil 02 and the magnetic field at the charging receiver coil 04 from interfering with each other. The design of the first groove 081, on the one hand, can enable the first magnetic isolation member 08 and the charging transmitter coil 02 to partially or fully overlap, reducing the overall thickness of the product. On the other hand, it can also better avoid the leakage of magnetic flux from the charging transmitter coil 02. Similarly, the design of the second groove 091 also achieves the goal of reducing thickness and reducing the risk of magnetic flux leakage. In order to achieve electrical connection between the charging transmitter coil 02 and the circuit board assembly 03, a first through hole 0811 is provided on the first magnetic shielding member 08, and a second through hole 0911 is provided on the second magnetic shielding member 09. It should be noted that the first through hole 0811 and the second through hole 0911 mentioned in this application do not specifically refer to holes that are closed on all sides. The open holes shown in Figures 10 and 11 also belong to the type of through holes mentioned in this application. There are also multiple options for the installation location of the first through hole 0811 and the second through hole 0911. The through hole can be at the edge of the first magnetic shielding member 08 as shown in Figure 10. For example, the position more than 40% of the total distance away from the center is defined as the edge. Compared with the hole in the center, this design can reduce the amount of magnetic leakage and further improve product stability. Of course, the through hole can also be on the side wall of the second magnetic isolation component 09 like the second through hole 0911 shown in Figure 11. It can be an open hole or a hole closed on all sides. The shape of the hole can be rectangular, semicircular, circular, triangular, etc., and technical personnel in this field can reasonably open it according to needs.

[0083] Continuing to refer to Figures 2 to 7, specifically, a magnetic attraction portion 12 is also provided on the edge of the charging transmitter coil 02 within the first tray 05. The first tray 05 is provided with a step 051, and the magnetic attraction portion 12 is provided above the step 051, so that the height of the magnetic attraction portion 12 is higher than the height of the charging transmitter coil 02, and the magnetic attraction portion 12 at least partially overlaps with the height direction of the charging transmitter coil 02. The magnetic attraction portion 12 includes a first magnet unit 121 and a second magnet unit 122. The N / S poles of the first magnet unit 121 and the S / N poles of the second magnet unit 122 attract and connect with each other. Multiple groups of first magnet units 121 and second magnet units 122 are connected end to end to form the magnetic attraction portion 12. The first magnet unit 121 and the second magnet unit 122 are fixed by a gasket 123 and then are disposed as a whole on the step 051.

[0084] Not all wireless charging devices in existing vehicles are equipped with a magnetic design. For those without a magnetic design, the phone may not be placed in the center, affecting charging efficiency. The wireless charging adapter in this application, by introducing a magnetic portion 12, can address this shortcoming in existing vehicles, achieving precise alignment between the phone and the charging transmitter coil 02 and preventing the phone from bumping around on bumpy roads. Furthermore, as shown in FIG7 , the magnetic portion 12 is configured to partially overlap the charging transmitter coil 02 by a dimension L2, which not only reduces the thickness of the overall device but also reduces the magnetic field effect of the magnetic portion 12 on the charging transmitter coil 02. In addition, the magnetic attraction portion 12 is higher than the L1 dimension of the charging transmitter coil 02, so that the clamping cover 012 can simultaneously clamp the magnetic attraction portion 12 and the charging transmitter coil 02 through the boss, thereby avoiding the situation where one of the charging transmitter coil 02 and the magnetic attraction portion 12 is not clamped due to dimensional tolerance. Moreover, since the magnetic attraction portion 12 itself usually adopts a permanent magnet, its magnetic force is relatively small. Setting the magnetic attraction portion 12 closer to the first surface 015 can also more firmly fix the mobile phone, further realizing the practicality of the product.

[0085] Continuing to refer to FIG. 4 and FIG. 6 , specifically, a capacitor 13 is further provided on the side of the bracket 07 , and the capacitor 13 is arranged side by side with the receiving groove 071 .

[0086] As one of the larger components of the present application, the rationality of the arrangement of the capacitor 13 directly affects the overall thickness of the wireless charging adapter device of the present application. In addition to making the accommodating groove 071 overlap with the circuit board assembly 03, the present application also arranges the capacitor 13 and the accommodating groove 071 side by side, thereby achieving partial or full overlap of the circuit board assembly 03, the accommodating groove 071, and the capacitor 13, thereby greatly reducing the overall thickness of the product.

[0087] Continuing with Figures 4, 6, 8, and 10, specifically, a second tray 06 is further disposed within the housing 01, with the circuit board assembly 03 positioned within the receiving slot 071 via the second tray 06. An intermediate support cover 10 is also disposed between the second tray 06 and the first tray 05, and is positioned over the second tray 06. A protrusion 052 is provided on the second surface 016 of the first tray 05 facing the housing 01, and an insertion hole 101 is correspondingly provided on the intermediate support cover 10. The protrusion 052 is inserted into the insertion hole 101, ensuring that there is no relative displacement between the first tray 05 and the intermediate support cover 10. An intermediate base support 11 is further disposed below the second tray 06, and a stepped platform 0711 is further provided within the receiving slot 071 of the bracket 07. The intermediate base support 11 is positioned on the stepped platform 0711, and the second tray 06 is positioned on the intermediate base support 11. It should be noted that the insertion hole 101 can be an open hole as shown in Figure 8, or a closed hole on all sides.

[0088] Despite the provision of first and second magnetic shielding members 08 and 09, the circuit board assembly 03 itself still has high requirements for magnetic shielding. Furthermore, to achieve electrical connection, the charging transmitter coil 02 must pass through the first through-hole 0811, the first wire hole 053, and the second wire hole 102 into the second tray 06. At this point, some magnetic flux leakage still occurs in the first through-hole 0811. Although the amount of magnetic flux leakage is not significant, sufficient precautions are still required. The same applies to the charging receiver coil 04. Therefore, the wireless charging adapter of the present application also includes a second tray 06 and an intermediate support cover 10, which can house the entire circuit board assembly 03 and act as a magnetic shield. To facilitate determining the overlap between the second tray 06 and the receiving slot 071, a stepped platform 0711 is also provided. The intermediate base support 11 allows the second tray 06 to be positioned on the stepped platform 0711. This ensures that the overlap between the second tray 06 and the receiving slot 071 remains constant and prevents movement when not fixed, thus facilitating control of the overall thickness. In addition, as shown in Figure 8, in order to further reduce the overall thickness and ensure the stability of the product structure, the present application also provides a protrusion 052 under the first tray 05, and correspondingly provides an insertion hole 101 on the middle support cover 10. The protrusion 052 is inserted into the insertion hole 101, so that there is no relative rotation between the two. By tightening the compression cover 012, the internal overall displacement is finally achieved. Compared with the solution of adding a glue layer in the middle to fix it, this design saves raw materials and is easier to assemble. Most importantly, the thickness after assembly is the superposition of the thickness of the two. Compared with the setting of the glue layer, the solution of the present application at least reduces the space occupied by the glue layer, thereby further reducing the thickness of the wireless charging adapter.

[0089] 4 and 6 , specifically, the housing 01 includes a base 011 and a compression cover 012 , wherein the base 011 is fixedly connected to the compression cover 012 . An exterior cover 013 is sleeved on the outside of the compression cover 012 .

[0090] The compression cover 012 can secure the internal structure, and the appearance cover 013 is arranged outside the compression cover 012 to further meet special requirements such as anti-slip and rainproof. Of course, although the present application schematically illustrates the case 01 including the base 011 and the compression cover 012, the case 01 of the present application can obviously also be a chamber 014 formed by the engagement of the left and right grooves. Such simple changes fall within the scope of protection of the case 01 of the present application.

[0091] In summary, this application has at least the following advantages:

[0092] 1. The overall structural principle layout enables this application to avoid vehicle modification and also enables vehicles that need to be upgraded to use the latest charging protocol, thereby improving the charging efficiency of some mobile phones.

[0093] 2. The overlapping design of the receiving groove 071 and the circuit board assembly 03 makes the wireless charging adapter of the present application thinner.

[0094] 3. The design of the first and second magnetic shielding members 08 and 09 minimizes the interaction between the charging transmitter coil 02 and the charging receiver coil 04 during use of the present invention, controlling the magnetic field within the product. Furthermore, the first magnetic shielding member 08 overlaps with the first tray 05 and the charging transmitter coil 02, while the second magnetic shielding member 09 overlaps with the charging receiver coil 04, making the overall product thinner. The edge design of the first and second through-holes 0811 and 0911 reduces magnetic flux leakage.

[0095] 4. The design of the magnetic part 12 not only fixes the mobile phone more firmly, but also reduces the mutual magnetic disturbance. The overlap of the magnetic part 12 and the charging transmitter coil 02 also makes the overall device thinner, making it easier to tighten the pressing cover 012 and requiring lower precision.

[0096] 5. The overlap of the capacitor 13, the receiving slot 071, and the circuit board assembly 03 makes the wireless charging adapter of the present application thinner.

[0097] 6. The magnetic shielding cover design of the second tray 06 and the middle support cover 10 makes the overall magnetic shielding effect better.

[0098] 7. The design of the protrusion 052 and the insertion hole 101 of the middle support cover 10 and the first tray 05 makes the entire product without a glue layer, which makes the product thinner, easier to assemble, and has a better fixing effect.

[0099] 8. The design of the middle base 11 and the stepped platform 0711 can more accurately confirm the overlapping degree of the second tray 06, making it easier to control product quality and making the product thinner.

[0100] 9. The appearance cover 013 and the pressing cover 012 are designed separately, so that they can respectively respond to different technical problems, so that the top can be stably pressed by the hard pressing cover 012, and can also play an anti-slip role through the soft rubber appearance cover 013.

[0101] 10. Multiple sets of charging transmitter coils 02 are arranged side by side, for example, they can be arranged side by side in the first tray 05. The first tray 05 can be expanded in the horizontal dimension accordingly. Multiple sets of charging transmitter coils 02 are connected in parallel to achieve multiple charging positions at the same time, which is convenient for charging multiple identical or different devices.

[0102] It should be noted that the above-mentioned implementation mode is only used to illustrate the principles of the present application and is not intended to limit the scope of protection of the present application. Without departing from the principles of the present application, those skilled in the art can adjust the above-mentioned structure so that the present application can be applied to more specific application scenarios.

[0103] In addition, the present application also provides a wireless charging component, which includes a wireless charging device and a wireless charging adapter device according to any one of the above technical solutions.

[0104] In addition, this application also provides a vehicle equipped with a wireless charging adapter according to any of the above technical solutions, wherein the device to be converted is a vehicle-mounted wireless charging device. It should be noted that the vehicle referred to in this application is not limited to conventional vehicles, but can also be other types of vehicles, as long as the vehicle is equipped with a wireless charging device capable of charging mobile devices.

[0105] Thus far, the technical solutions of the present application have been described in conjunction with the specific embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present application.

Claims

1. A wireless charging adapter, characterized in that: The wireless charging adapter includes a housing, a chamber is provided in the housing, a charging transmitter coil, a circuit board assembly, and a charging receiver coil are provided in the chamber, and the circuit board assembly includes a charging transmitter controller, a main controller, and a charging receiver controller; The charging receiving end coil is used to receive the changing magnetic field emitted by the device to be converted and to generate alternating current; The charging receiving end controller is connected to the charging receiving end coil, and is used to convert alternating current into direct current and communicate with the device to be converted through a first protocol; The charging receiving end controller is connected to the charging transmitting end controller; The charging transmitter controller is connected to the charging transmitter coil, and is used to convert direct current into alternating current and to communicate with the device to be charged through a second protocol; The charging transmitting end coil is used to convert alternating current into a changing magnetic field and provide the changing magnetic field to the device to be charged; The main controller is in communication with the charging transmitter controller and the charging receiver controller respectively.

2. The wireless charging adapter according to claim 1, characterized in that: The housing is further provided with a first tray and a bracket, and a receiving slot is provided in the middle portion of the bracket. The charging transmitter coil is arranged in the first tray. The circuit board assembly is arranged in the receiving groove, The charging receiving end coil is arranged between the bottom of the housing and the bracket, The devices in the housing are arranged in order from top to bottom: a charging transmitter coil, a first tray, a bracket, a circuit board assembly, and a charging receiver coil.

3. The wireless charging adapter according to claim 2, characterized in that: A first magnetic shielding member is further provided in the housing. The first magnetic shielding member has a first groove provided on a first surface facing the housing. The charging transmitter coil is provided in the first groove. The first magnetic shielding member is provided in the first tray. The first surface of the housing is a surface close to the device to be charged.

4. The wireless charging adapter according to claim 3, characterized in that: A second magnetic shielding member is further provided in the housing, and the second magnetic shielding member is provided with a second groove facing the second surface of the housing, the charging receiving end coil is provided in the groove, and the second magnetic shielding member is provided between the bottom of the housing and the bracket; The second surface of the housing is a surface close to the device to be converted.

5. The wireless charging adapter according to claim 4, characterized in that: The first magnetic isolation member is provided with a first through hole, and the first through hole is provided on a side wall of the first groove, or at an edge of the first magnetic isolation member; The second magnetic shielding member is provided with a second through hole, and the second through hole is provided on a side wall of the second groove, or at an edge of the second magnetic shielding member.

6. The wireless charging adapter according to claim 2, characterized in that: A magnetic attraction portion is further provided on the edge of the charging transmitter coil in the first tray.

7. The wireless charging adapter according to claim 6, characterized in that: The first tray is provided with a step, and the magnetic attraction portion is provided above the step so that the height of the magnetic attraction portion is higher than the height of the charging transmitter coil, and the magnetic attraction portion at least partially overlaps with the height direction of the charging transmitter coil in the height direction.

8. The wireless charging adapter according to claim 7, characterized in that: The magnetic attraction portion includes a first magnet unit and a second magnet unit. The N / S poles of the first magnet unit and the S / N poles of the second magnet unit attract and connect with each other. Multiple groups of the first magnet units and the second magnet units are connected end to end to form the magnetic attraction portion.

9. The wireless charging adapter according to claim 2, wherein: A capacitor is also provided on the side of the bracket, and the capacitor is arranged side by side with the accommodating groove.

10. The wireless charging adapter according to claim 2, wherein: A second tray is further provided in the housing, and the circuit board assembly is arranged in the accommodating groove via the second tray.

11. The wireless charging adapter according to claim 10, wherein: An intermediate support cover is further provided between the second tray and the first tray, and the intermediate support cover is provided on the second tray.

12. The wireless charging adapter according to claim 11, wherein: The first tray is provided with a protrusion on the second surface facing the shell, and the intermediate support cover is correspondingly provided with an insertion hole, the protrusion is inserted into the insertion hole, so that there is no relative displacement between the first tray and the intermediate support cover; The second surface of the housing is a surface close to the device to be converted.

13. The wireless charging adapter according to claim 10, wherein: An intermediate bottom support is further provided below the second tray, a stepped platform is further provided in the accommodating groove of the bracket, the intermediate bottom support is provided on the stepped platform, and the second tray is provided on the intermediate bottom support.

14. The wireless charging adapter according to any one of claims 1 to 13, characterized in that: The housing comprises a base and a pressing cover, wherein the base is fixedly connected to the pressing cover.

15. The wireless charging adapter according to claim 14, wherein: An appearance cover is also sleeved on the outer side of the compression cover.

16. The wireless charging adapter according to claim 2, wherein: The charging transmitter coils are provided in multiple groups, and the multiple groups of charging transmitter coils are arranged side by side in the first tray, and the multiple groups of charging transmitter coils are arranged in parallel.

17. A wireless charging assembly, characterized in that: The wireless charging component includes a wireless charging device and a wireless charging adapter according to any one of claims 1 to 16.

18. A vehicle, characterized in that: The vehicle is equipped with the wireless charging adapter according to any one of claims 1 to 16, and the device to be converted is an on-board wireless charging device.

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