Wireless charging device, wireless charging system, vehicle and smart home device

Abstract

The utility model provides wireless charging equipment, a wireless charging system, a vehicle and smart home equipment, and the wireless charging equipment comprises a base which is provided with a charging bearing surface; the base is provided with a first groove, a groove opening of the first groove is located in the charging bearing surface, and the first groove is used for accommodating the part, protruding out of the charging bearing surface, of the to-be-charged main body; at least part of the charging transmitting coil module is arranged in the base, the charging transmitting coil module is adjacent to the first groove, the charging transmitting coil module comprises a transmitting coil, and the distance between the charging transmitting coil module and the first groove in the length direction is smaller than or equal to a first preset distance; when the back surface of the to-be-charged main body is attached to the charging bearing surface, the center of the transmitting coil is aligned with the center of the receiving coil of the to-be-charged main body; the deviation between the receiving coil arranged near the camera decorating part and the transmitting coil can be reduced, and the charging efficiency of the wireless charging equipment on the to-be-charged main body is improved.

Description

Technical Field

[0001] This application relates to the field of wireless charging technology, specifically to a wireless charging device, a wireless charging system, a vehicle, and a smart home device. Background Technology

[0002] Wireless charging technology works on the principle of electromagnetic induction. The coil in the charging base generates a magnetic field, and the coil in the device being charged converts this magnetic field into current to charge its battery. With the development of wireless charging technology, it can transfer electrical energy from a power source to the device with high efficiency. Many smartphones, tablets, smart wearables, headphones, and other portable electronic devices support wireless charging. Wireless charging technology utilizes the principle of electromagnetic induction to provide the convenient experience of charging electronic devices without wires. How to design a wireless charging device and improve its charging efficiency for the device being charged has become a technical problem that needs to be solved. Utility Model Content

[0003] This application provides a wireless charging device and wireless charging system, vehicle, and smart home device that can improve the charging efficiency of wireless charging devices for the subject to be charged.

[0004] In a first aspect, this application provides a wireless charging device, comprising:

[0005] A base having a charging bearing surface for fitting against the back of a body to be charged; the base having a first groove, the opening of which is located on the charging bearing surface, the first groove for receiving a portion of the body protruding from the charging bearing surface when the back of the body to be charged is fitted against the charging bearing surface; and

[0006] A charging transmitting coil module, at least a portion of which is disposed within the base, is used to charge the subject to be charged. The charging transmitting coil module is disposed adjacent to the first groove. The charging transmitting coil module includes a transmitting coil. The distance between the charging transmitting coil module and the first groove in the length direction is less than or equal to a first preset distance, such that when the back of the subject to be charged is in contact with the charging bearing surface, the center of the transmitting coil is aligned with the center of the receiving coil of the subject to be charged.

[0007] The wireless charging device provided in this application features a base with a charging bearing surface for attaching to the back of the subject to be charged. The base has a first groove, the opening of which is located on the charging bearing surface. This groove accommodates portions of the subject protruding from the charging bearing surface when the back of the subject is attached to it. At least a portion of a charging transmitting coil module is disposed within the base. This module charges the subject and is adjacent to the first groove. The transmitting coil module includes a transmitting coil, and the distance between it and the first groove in the longitudinal direction is less than or equal to a first preset distance. This ensures alignment between the center of the transmitting coil and the center of the receiving coil of the subject when the back of the subject is attached to the charging bearing surface. By designing the transmitting coil module and the first groove to be close in the longitudinal direction, the receiving coil located near the camera trim can be close to the transmitting coil with minimal offset, thereby increasing the coupling coefficient between the transmitting and receiving coils, increasing the induced voltage within the receiving coil, and improving the charging efficiency of the wireless charging device on the subject.

[0008] Secondly, this application provides a wireless charging system, which includes a subject to be charged and a wireless charging device as described in the first aspect, wherein the subject to be charged includes a receiving coil.

[0009] The wireless charging device includes a transmitting coil. When the subject to be charged comes into contact with the wireless charging device, and the back of the subject to be charged is in contact with the charging bearing surface, the distance between the center of the transmitting coil and the center of the receiving coil is less than or equal to 10mm.

[0010] Thirdly, this application provides a vehicle including a vehicle body and a wireless charging device as described in the first aspect, wherein the wireless charging device is embedded in or detachably connected to the vehicle body.

[0011] Fourthly, this application provides a smart home device, which includes a home appliance body and a wireless charging device as described in the first aspect, wherein the wireless charging device is disposed on or detachably connected to the home appliance body. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below.

[0013] Figure 1 This is a schematic diagram of the structure of a wireless charging dock device provided in Embodiment 1 of this application. Figure 1 ;

[0014] Figure 2This is a schematic diagram of the first wireless charging system provided in Embodiment 2 of this application;

[0015] Figure 3 yes Figure 2 A cross-sectional view along the AA direction of a wireless charging system is provided;

[0016] Figure 4 This is a schematic diagram of the back of a main body to be charged provided in an embodiment of this application;

[0017] Figure 5 This is a schematic diagram of the back of another charging body provided in an embodiment of this application;

[0018] Figure 6 This is a schematic diagram of the second wireless charging system provided in Embodiment 2 of this application;

[0019] Figure 7 yes Figure 6 A cross-sectional view along the BB direction of a wireless charging system is provided;

[0020] Figure 8 This is a schematic diagram of the third wireless charging system provided in Embodiment 2 of this application;

[0021] Figure 9 yes Figure 8 A cross-sectional view along the CC direction of a wireless charging system is provided;

[0022] Figure 10 This is a schematic diagram of the fourth wireless charging system provided in Embodiment 2 of this application;

[0023] Figure 11 This is a schematic diagram of the fifth wireless charging system provided in Embodiment 2 of this application;

[0024] Figure 12 This is an exploded view of the structure of the wireless charging coil module, heat dissipation component, fan component, and cooling component provided in the embodiments of this application;

[0025] Figure 13 This is a schematic diagram of the structure of a wireless charging dock device provided in Embodiment 1 of this application. Figure 2 ;

[0026] Figure 14 This is a schematic diagram of the structure of a wireless charging dock device provided in Embodiment 1 of this application. Figure 3 ;

[0027] Figure 15 This is a cross-sectional schematic diagram of a wireless charging system provided in Embodiment 2 of this application;

[0028] Figure 16 This is a structural schematic diagram of a vehicle provided in Embodiment 3 of this application;

[0029] Figure 17 This is a schematic diagram of the structure of a smart home device provided in Embodiment 4 of this application.

[0030] Explanation of some of the icon numbers:

[0031] Wireless charging device 100; base 10; charging transmitting coil module 20; charging bearing surface 11; main body to be charged 200; first groove 12; camera decorative part 210; transmitting coil 21; receiving coil 220; bottom frame 230; bottom support part 131; first magnetic suction module 22; top retaining wall part 132; first side retaining wall part 133; second side retaining wall part 134; charging bottom surface 14; second magnetic suction module 24; first end 221; second end 222; third end 241; fourth end 242; bearing plate 151; circuit board 152; inner ring groove 153; outer ring groove 154; cooling pad 155; fan assembly 156; heat dissipation fin assembly 157; fin main body part 1571; fin peripheral part 1572; hollow area 1521; cooling component 158; receiving slot 160. Detailed Implementation

[0032] The technical solution of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the embodiments described in this application are only a part of the embodiments, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without creative effort are within the protection scope of this application.

[0033] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment to other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0034] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a particular order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, an assembly or device comprising one or more components is not limited to the one or more components listed, but may optionally also include one or more components not listed but inherent to the exemplified product, or one or more components that it should have based on the described function.

[0035] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a wireless charging device 100 provided in Embodiment 1 of this application. This application provides a wireless charging device 100.

[0036] The wireless charging device 100 includes, but is not limited to, in-vehicle wireless charging brackets, wireless charging protective cases, wireless charging devices 100, vertical wireless chargers, magnetic charging pads, and magnetic 3-in-1 chargers (magnetic phone slot + earphone / watch charging slot). The wireless charging device 100 may be a magnetic charging device or a non-magnetic charging device.

[0037] The wireless charging device 100 can be used independently or installed in vehicles, such as magnetic car mounts, in-vehicle central charging panels, etc. It can also be integrated with smart home devices, such as wireless charging table lamps / Bluetooth speakers, wireless charging mats / tables, and horizontal charging stands.

[0038] The wireless charging device 100 is used to charge a device to be charged. The device to be charged includes, but is not limited to, mobile phones, tablets, laptops, wearable devices (smartwatches, smart bracelets, Bluetooth headsets, etc.), drones, robots, digital cameras, and other devices with communication functions. This embodiment uses a mobile phone as an example; other devices to be charged can refer to this embodiment.

[0039] Please see Figure 1 The wireless charging device 100 includes a base 10 and a charging transmitting coil module 20.

[0040] Please see Figure 1 The base 10 has a charging bearing surface 11.

[0041] The shape of the base 10 is not specifically limited. For example, the base 10 is generally rectangular, and the charging bearing surface 11 may be the top surface of the base 10 or a part of the top surface of the base 10. As another example, the base 10 is generally wedge-shaped, and the charging bearing surface 11 may be the top surface of the base 10 or a part of the top surface of the base 10.

[0042] Please see Figure 2 The charging bearing surface 11 is used to adhere to the back of the body 200 to be charged.

[0043] Please see Figure 1 The base 10 has a first groove 12. The opening of the first groove 12 is located on the charging bearing surface 11. In other words, the first groove 12 can be formed downwards from the charging bearing surface 11.

[0044] In this embodiment, the first groove 12 is used to accommodate the portion of the body 200 to be charged that protrudes from the charging bearing surface 11.

[0045] Please see Figure 2 The first groove 12 is used to receive a portion of the body 200 protruding from the charging support surface 11 when the back of the body 200 to be charged is attached to the charging support surface 11. This portion protruding from the charging support surface 11 includes, but is not limited to, a camera decorative piece 210, a camera module, etc. Optionally, the first groove 12 is used to receive a camera decorative piece 210 of the body 200 to be charged when the back of the body 200 is attached to the charging support surface 11.

[0046] Please see Figure 2 and Figure 3 Taking the main body 200 to be charged as a mobile phone as an example, generally, the back cover of the mobile phone is attached to the charging bearing surface 11 of the wireless charging device 100. Furthermore, a camera decorative piece 210 is also provided on the side of the back cover of the mobile phone. The camera decorative piece 210 plays the role of protecting and fixing the camera module so that the camera module can be stably installed on the back cover.

[0047] Optional, please refer to Figure 2 and Figure 3 The first groove 12 is located near the top of the charging bearing surface 11 so that the first groove 12 corresponds to the camera decorative piece 210 located near the top edge of the body to be charged 200.

[0048] In this embodiment, please refer to Figure 2 and Figure 3 By providing a first groove 12 on the charging bearing surface 11, the camera decorative piece 210 of the subject 200 to be charged is disposed in the first groove 12, thereby facilitating the back of the subject 200 to be charged to adhere to the charging bearing surface 11, reducing the adhesion gap between the back of the subject 200 to be charged and the charging bearing surface 11, and thereby increasing the charging coupling coefficient between the subject 200 to be charged and the wireless charging device 100.

[0049] Optionally, the size of the first groove 12 is larger than the size of the camera decoration 210, so that the camera decoration 210 can be completely accommodated in the first groove 12.

[0050] At least a portion of the charging transmitter coil module 20 is disposed within the base 10. Optionally, the charging transmitter coil module 20 may be completely disposed within the base 10, or a portion of the charging transmitter coil module 20 may be disposed within the base 10, with another portion protruding from the charging bearing surface 11.

[0051] Please see Figure 2 and Figure 3The charging transmitter coil module 20 is used to charge the subject 200 to be charged. Specifically, the charging transmitter coil module 20 includes a transmitter coil 21. The subject 200 to be charged includes a receiver coil 220.

[0052] When the receiving coil 220 is directly opposite the transmitting coil 21, the transmitting coil 21 is coupled to the receiving coil 220, and the induced voltage formed in the receiving coil 220 charges the battery of the body 200 to be charged.

[0053] Please see Figure 2 and Figure 3 The charging transmitter coil module 20 is disposed adjacent to the first groove 12. Furthermore, the charging transmitter coil module 20 and the first groove 12 are disposed adjacent to each other along the length direction Y.

[0054] The distance between the charging transmitting coil module 20 and the first groove 12 in the length direction Y is less than or equal to a first preset distance, so that when the back of the body to be charged 200 is attached to the charging bearing surface 11, the center of the transmitting coil 21 is aligned with the center of the receiving coil 220 of the body to be charged 200.

[0055] Specifically, the first groove 12 has a bottom edge, and the charging transmitter coil module 20 is disposed adjacent to the bottom edge of the first groove 12.

[0056] For example, the first preset distance is 20mm. Alignment of the center of the transmitting coil 21 with the center of the receiving coil 220 of the body to be charged includes, but is not limited to, a distance between the center of the transmitting coil 21 and the center of the receiving coil 220 of the body to be charged being less than or equal to 10mm.

[0057] For example, the distance between the charging transmitting coil module 20 and the bottom edge of the first groove 12 in the length direction Y is less than or equal to 20mm, so that when the back of the body to be charged 200 is attached to the charging bearing surface 11, the distance between the center of the transmitting coil 21 and the center of the receiving coil 220 of the body to be charged 200 is less than or equal to 10mm.

[0058] If the distance between the charging transmitting coil module 20 and the first groove 12 in the length direction Y is greater than 20mm, it may cause the distance between the center of the transmitting coil 21 and the center of the receiving coil 220 of the body to be charged to be greater than 10mm. The offset between the transmitting coil 21 and the receiving coil 220 is large, the coupling coefficient between the transmitting coil 21 and the receiving coil 220 is reduced, and the induced voltage formed in the receiving coil 220 is reduced, resulting in charging difficulties. This can easily cause problems such as accidental disconnection of charging due to foreign object protection, excessive heat and slow charging, poor and intermittent communication, and poor user experience.

[0059] Therefore, in this embodiment, the distance between the charging transmitter coil module 20 and the first groove 12 in the length direction Y is less than or equal to 20mm. Specifically, the distance between the charging transmitter coil module 20 and the first groove 12 in the length direction Y includes, but is not limited to, any one or any two values ​​of 0mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, and 20mm.

[0060] In this embodiment, by designing the charging transmitting coil module 20 and the first groove 12 to be close in the length direction Y, for the main body 200 to be charged, due to the limited size on the back cover, the distance between the receiving coil 220 and the camera decorative piece 210 is also close. For example, the distance between the receiving coil 220 and the camera decorative piece 210 is less than or equal to 20mm. Thus, when the camera decorative piece 210 is located in the first groove 12, the receiving coil 220 on the main body 200 to be charged and the transmitting coil 21 on the wireless charging device 100 are close in position (less than or equal to 10mm). The receiving coil 220 located near the camera decorative piece 210 can be less offset from the transmitting coil 21, thereby increasing the coupling coefficient between the transmitting coil 21 and the receiving coil 220, increasing the induced voltage formed in the receiving coil 220, and improving the charging efficiency of the wireless charging device 100 on the main body 200 to be charged.

[0061] Optionally, in this embodiment, the distance between the charging transmitter coil module 20 and the first groove 12 in the length direction Y is less than or equal to 10 mm. Specifically, the distance between the charging transmitter coil module 20 and the first groove 12 in the length direction Y includes, but is not limited to, any one or any two of the following values: 0 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, and 10 mm.

[0062] Because the size and position of the camera decorative piece 210 differ for different models of the charging body 200, the position of the receiving coil 220 relative to the bottom edge 230 of the charging body 200 is also different (the position of the receiving coil 220 varies). When the wireless charging device 100 is used to charge different models of the charging body 200, the transmitting coil 21 of the wireless charging device 100 and the receiving coil 220 of the charging body 200 are very prone to misalignment. This can easily cause problems such as accidental disconnection due to foreign object protection, excessive heat and slow charging, poor and intermittent communication, resulting in a poor user experience.

[0063] In this embodiment, the distance between the charging transmitting coil module 20 and the first groove 12 in the length direction Y is designed to be less than or equal to 10mm, for example, close to 10mm. Even for different models of the subject 200 to be charged, the distance between the receiving coil 220 and the camera decorative piece 210 is within the range of 0 to 20mm, which can ensure that the distance between the center of the transmitting coil 21 and the center of the receiving coil 220 is less than or equal to 10mm. While being compatible with different models of the subject 200 to be charged, it also ensures that the receiving coil 220 located near the camera decorative piece 210 has less misalignment with the transmitting coil 21, thereby increasing the coupling coefficient between the transmitting coil 21 and the receiving coil 220, increasing the induced voltage formed in the receiving coil 220, and improving the charging efficiency of the wireless charging device 100 for the subject 200 to be charged.

[0064] The wireless charging device 100 provided in this application is designed with a base 10 having a charging bearing surface 11, which is used to fit against the back of the main body 200 to be charged. The base 10 has a first groove 12, the opening of which is located on the charging bearing surface 11. The first groove 12 is used to accommodate the camera decorative piece 210 of the main body 200 when it is fitted against the charging bearing surface 11. At least a portion of the charging transmitting coil module 20 is disposed within the base 10. The charging transmitting coil module 20 is used to charge the main body 200. The charging transmitting coil module 20 is disposed adjacent to the first groove 12 and includes a transmitting coil 21. The distance between module 20 and the first groove 12 in the length direction Y is less than or equal to 20mm, so that when the back of the subject 200 to be charged is attached to the charging bearing surface 11, the distance between the center of the transmitting coil 21 and the center of the receiving coil 220 of the subject 200 to be charged is less than or equal to 10mm. By designing the charging transmitting coil module 20 and the first groove 12 to be close in the length direction Y, the receiving coil 220 located near the camera decorative piece 210 can be close to the transmitting coil 21 with little offset, thereby improving the coupling coefficient between the transmitting coil 21 and the receiving coil 220, increasing the induced voltage formed in the receiving coil 220, and improving the charging efficiency of the wireless charging device 100 for the subject 200 to be charged. It also enables the wireless charging device 100 to be adapted to different models of the subject 200 to be charged, expanding the application scenarios of the wireless charging device 100.

[0065] The specific structure of the first groove 12 will be illustrated below.

[0066] In this embodiment, the base 10 further includes a peripheral sidewall surrounding the charging bearing surface 11. The peripheral sidewall of the base 10 includes a top sidewall, a first sidewall, a bottom sidewall, and a second sidewall connected end to end.

[0067] Optionally, the first groove 12 may penetrate any one of the top sidewall, the first sidewall, and the second sidewall.

[0068] Alternatively, the first groove 12 may penetrate any two of the top sidewall, the first sidewall, and the second sidewall.

[0069] Alternatively, the first groove 12 may penetrate the top sidewall, the first sidewall, and the second sidewall.

[0070] Alternatively, please refer to Figure 1 The first groove 12 may not penetrate the top sidewall, the first sidewall, and the second sidewall. The following embodiments will be illustrated using this embodiment as an example.

[0071] For details, please refer to Figure 4 and Figure 5 Since the size or position of the camera decorative piece 210 of the charging body 200 is different for different models, the distance L1 between the bottom edge of the camera decorative piece 210 and the bottom frame 230 of the charging body 200 is different for different models.

[0072] Generally, since the first groove 12 needs to accommodate camera decorative parts 210 of different sizes, the size of the first groove 12 is relatively large. In this embodiment, the size of the first groove 12 is not specifically limited. In this embodiment, the shape of the first groove 12 is not specifically limited. Taking a relatively large first groove 12 as an example, the first groove 12 is rectangular.

[0073] Optional, please refer to Figure 1 The base 10 includes a bottom support portion 131 protruding from the charging bearing surface 11. The distance between the bottom support portion 131 and the first groove 12 is greater than or equal to a second preset distance H1, and the bottom support portion 131 abuts against or is spaced apart from the bottom frame 230 of the body to be charged 200.

[0074] For the charging unit 200 of the first model, please refer to Figure 4 , Figure 6 and Figure 7 The camera decorative piece 210 is relatively small, and the distance between the bottom edge of the camera decorative piece 210 and the bottom frame 230 of the main body 200 to be charged is relatively large. The distance between the bottom support 131 and the bottom edge of the first groove 12 is equal to a second preset distance H1. The second preset distance H1 is the distance between the bottom edge of the camera decorative piece 210 of the main body 200 to be charged and the bottom frame 230 of the main body 200 to be charged.

[0075] Since the camera decorative piece 210 is relatively small, when the camera decorative piece 210 is placed in the first groove 12, the bottom edge of the camera decorative piece 210 is spaced apart from the bottom edge of the first groove 12.

[0076] Since the distance between the bottom support 131 and the bottom edge of the first groove 12 is equal to the distance between the bottom edge of the camera decoration 210 of the body to be charged and the bottom frame 230 of the body to be charged, the bottom support 131 supports the bottom frame 230 of the body to be charged, so that the transmitting coil 21 of the wireless charging device 100 is aligned with the receiving coil 220 in the body to be charged for charging.

[0077] Furthermore, for the charging method in which the bottom support 131 supports the bottom frame 230 of the main body 200 to be charged, the distance between the transmitting coil 21 and the bottom support 131 can be designed to be close to or equal to the distance between the receiving coil 220 and the bottom frame 230 of the main body 200 to be charged. This allows for precise positioning of the transmitting coil 21 and the receiving coil 220 when the bottom support 131 supports the bottom frame 230 of the main body 200 to be charged, thereby improving charging efficiency.

[0078] Optionally, the distance between the center of the transmitting coil 21 and the bottom support 131 is greater than or equal to a third preset distance and less than or equal to a fourth preset distance, so that when the bottom support 131 supports the bottom frame 230 of the main body to be charged 200, the distance between the center of the transmitting coil 21 and the center of the receiving coil 220 is less than or equal to 10mm.

[0079] For example, the distance between the center of the transmitting coil 21 and the bottom support 131 is greater than or equal to 78 mm and less than or equal to 84 mm. In other words, the distance between the center of the transmitting coil 21 and the bottom support 131 includes, but is not limited to, any one of 78 mm, 79 mm, 80 mm, 81 mm, 82 mm, 83 mm, or 84 mm, or any value between any two of these values.

[0080] If the distance between the center of the transmitting coil 21 and the bottom support 131 is too small, it may cause the misalignment between the center of the receiving coil 220 and the center of the transmitting coil 21 to be greater than 10mm. If the distance between the center of the transmitting coil 21 and the bottom support 131 is too large, it may cause the dimension of the wireless charging device 100 along the length direction Y to be too large, and may also cause the misalignment between the center of the receiving coil 220 and the center of the transmitting coil 21 to be too large when the bottom frame 230 of the main body 200 to be charged abuts against the bottom support 131.

[0081] For the charging unit 200 of the second model, please refer to Figure 2 , Figure 3 and Figure 5 The camera decorative piece 210 is relatively large, and the distance between its bottom edge and the bottom frame 230 of the main body 200 to be charged is relatively small. The distance H2 between the bottom support portion 131 and the bottom edge of the first groove 12 is greater than a second preset distance H1. The second preset distance H1 is the distance between the bottom edge of the camera decorative piece 210 and the bottom frame 230 of the main body 200 to be charged. When the camera decorative piece 210 is placed in the first groove 12, the bottom edge of the first groove 12 abuts against the bottom edge of the camera decorative piece 210 of the main body 200 to be charged, aligning the transmitting coil 21 of the wireless charging device 100 with the receiving coil 220 in the main body 200 to be charged. The bottom support portion 131 is spaced apart from the bottom frame 230 of the main body 200 to be charged.

[0082] In this embodiment, the distance between the bottom edge of the camera decorative piece 210 of the charging body 200 and the bottom frame 230 of the charging body 200 is smaller than the distance between the bottom edge of the camera decorative piece 210 of the charging body 200 and the bottom frame 230 of the charging body 200 in the first model.

[0083] In this embodiment, since the camera decorative piece 210 of the main body 200 to be charged is relatively large and occupies a large area of ​​the back cover, the receiving coil 220 is generally designed to be set close to the camera decorative piece 210. Therefore, the distance between the receiving coil 220 and the camera decorative piece 210 is less than 10mm. Thus, by designing the distance between the charging transmitting coil module 20 and the first groove 12 in the length direction Y to be less than or equal to 10mm, the distance between the center of the transmitting coil 21 and the center of the receiving coil 220 of the main body 200 to be charged is less than or equal to 10mm when the back of the main body 200 to be charged is attached to the charging bearing surface 11, so as to avoid problems such as accidental disconnection of charging due to poor charging, excessive heat generation and slow charging, and poor and intermittent communication.

[0084] Furthermore, the distance between the charging transmitting coil module 20 and the first groove 12 in the length direction Y is less than or equal to 5mm (e.g., 5mm, 4mm, 3mm, 2mm, or 1mm). For some subjects 200 to be charged, when the camera decoration 210 is disposed in the first groove 12, the bottom edge of the first groove 12 abuts against the bottom edge of the camera decoration 210 of the subject 200 to be charged. Since the size of the camera decoration 210 is relatively large, the distance between the camera decoration 210 and the transmitting coil 21 is less than or equal to 5mm (e.g., 5mm, 4mm, 3mm, 2mm, or 1mm), thus enabling more precise alignment and charging between the transmitting coil 21 of the wireless charging device 100 and the receiving coil 220 in the subject 200 to be charged.

[0085] Optional, please refer to Figure 8 The charging transmitting coil module 20 includes a first magnetic module 22 and a transmitting coil 21. The first magnetic module 22 is located on the outer periphery of the transmitting coil 21. The charging transmitting coil module 20 is adjacent to the first groove 12 (e.g., less than or equal to 1 mm). The distance between the transmitting coil 21 and the bottom edge of the first groove 12 is the difference between the inner and outer diameters of the first magnetic module 22, for example, a second preset distance difference. The distance between the receiving coil 220 and the camera decorative piece 210 is the second preset distance difference + 1 mm. This ensures that when the bottom edge of the first groove 12 abuts against the bottom edge of the camera decorative piece 210 of the subject to be charged 200, the receiving coil 220 and the transmitting coil 21 are precisely aligned, improving charging efficiency.

[0086] Optional, please refer to Figure 2 When the charging transmitting coil module 20 does not include the first magnetic module 22, the transmitting coil 21 is adjacent to or tangent to the bottom edge of the first groove 12 (e.g., less than or equal to 1 mm), and the distance between the transmitting coil 21 and the first groove 12 is defined as a second preset distance difference. The distance between the receiving coil 220 and the camera decorative piece 210 is the second preset distance difference, thereby ensuring that when the bottom edge of the first groove 12 abuts against the bottom edge of the camera decorative piece 210 of the body to be charged 200, the receiving coil 220 and the transmitting coil 21 are precisely aligned, improving charging efficiency.

[0087] Furthermore, for the charging method where the bottom edge of the first groove 12 abuts against the bottom edge of the camera decoration 210 of the body to be charged 200, the distance between the transmitting coil 21 and the bottom edge of the first groove 12 can be designed to be close to or equal to the distance between the receiving coil 220 and the camera decoration 210. This ensures that when the bottom edge of the first groove 12 abuts against the bottom edge of the camera decoration 210 of the body to be charged 200, the transmitting coil 21 and the receiving coil 220 are precisely positioned, thereby improving charging efficiency.

[0088] Optionally, the distance between the transmitting coil 21 and the bottom support 131 is designed to be close to or equal to the distance between the receiving coil 220 and the bottom edge 230 of the body to be charged 200, and the distance between the transmitting coil 21 and the bottom edge of the first groove 12 is designed to be close to or equal to the distance between the receiving coil 220 and the camera decoration 210. The wireless charging device 100 can not only be adapted to models with smaller camera decorations 210, and perform a charging method in which the bottom support 131 supports the bottom edge 230 of the body to be charged 200, but also has good charging alignment and high charging efficiency. It can also be adapted to models with larger camera decorations 210, and perform a charging method in which the bottom edge of the first groove 12 abuts against the bottom edge of the camera decoration 210 of the body to be charged 200, and also has good charging alignment and high charging efficiency.

[0089] Optional, please refer to Figure 1 The wireless charging device 100 also includes a top retaining wall portion 132 protruding from the charging bearing surface 11. The top retaining wall portion 132 is disposed opposite to the bottom support portion 131. The top retaining wall portion 132 is used to shield the top side of the main body 200 to be charged.

[0090] Optional, please refer to Figure 1 The wireless charging device 100 also includes a first side barrier portion 133 protruding from the charging bearing surface 11. The first side barrier portion 133 is located between the top barrier portion 132 and the bottom support portion 131. The first side barrier portion 133 is used to shield one side of the main body 200 to be charged.

[0091] Optional, please refer to Figure 1 The wireless charging device 100 also includes a second side barrier 134 protruding from the charging support surface 11. The second side barrier 134 is located between the top barrier 132 and the bottom support 131. The second side barrier 134 is disposed opposite to the first side barrier 133. The second side barrier 134 is used to shield the other side of the main body 200 to be charged.

[0092] This application does not specify the dimensions of the first groove 12. The following example, using a mobile phone as an example of the charging body 200, illustrates the dimensions of the first groove 12.

[0093] Optionally, the dimension of the first groove 12 along the width direction X is greater than or equal to a. Wherein, a is the dimension of the charging body 200 along the width direction X.

[0094] In this embodiment, by setting the size of the first groove 12 along the width direction X to be greater than or equal to the size of the width direction X of the body to be charged 200, the first groove 12 can accommodate camera decorative parts 210 disposed at different positions on the back cover of the body to be charged 200. For example, it can accommodate camera decorative parts 210 disposed on the left side of the back cover of the body to be charged 200, and it can also accommodate camera decorative parts 210 disposed on the right side of the back cover of the body to be charged 200.

[0095] For example, the first groove 12 has a dimension greater than or equal to 9 cm along the width direction X, so that the first groove 12 can accommodate the camera decoration 210 when the charging body 200 is a mobile phone.

[0096] The dimension of the first groove 12 along the depth direction is greater than or equal to b. Wherein, b is the thickness of the camera decorative piece 210 of the body to be charged 200.

[0097] In this embodiment, by setting the dimension of the first groove 12 along the depth direction to be greater than or equal to the thickness dimension of the camera decorative piece 210 of the body to be charged 200, the first groove 12 can completely accommodate the camera decorative piece 210 of the body to be charged 200, thereby enabling the back side of the body to be charged 200 to fit against the charging bearing surface 11.

[0098] For example, the first groove 12 has a depth dimension greater than or equal to 10 mm so that the first groove 12 can fully accommodate the camera decoration 210 when the charging body 200 is a mobile phone.

[0099] The dimension of the first groove 12 along the length direction Y is greater than or equal to c. Wherein, c is the distance between the bottom edge of the camera decorative element 210 and the top edge of the charging body 200.

[0100] In this embodiment, by setting the dimension of the first groove 12 along the length direction Y to be greater than or equal to the distance between the bottom edge of the camera decorative piece 210 and the top edge of the body to be charged 200, the first groove 12 can accommodate camera decorative pieces 210 located at different positions on the back cover of the body to be charged 200. For example, it can accommodate camera decorative pieces 210 located at the top of the back cover of the body to be charged 200, or it can accommodate camera decorative pieces 210 located at the middle of the back cover of the body to be charged 200.

[0101] For example, the first groove 12 has a dimension of 8 cm or more along the length direction Y, so that the first groove 12 can accommodate camera decorations 210 of different sizes when the main body 200 to be charged is a mobile phone.

[0102] Please see Figure 9 The base 10 also includes a charging bottom surface 14. The charging bottom surface 14 is disposed opposite to the charging bearing surface 11. The peripheral sidewall of the base 10 is also connected to the periphery of the charging bottom surface 14.

[0103] Please see Figure 9 The charging support surface 11 is inclined relative to the charging bottom surface 14. Specifically, the distance between the end of the charging support surface 11 near the bottom support portion 131 and the charging bottom surface 14 is less than the distance between the end of the charging support surface 11 away from the bottom support portion 131 and the charging bottom surface 14.

[0104] In this embodiment, the charging support surface 11 is designed to be an inclined surface, and the device to be charged is placed on the charging support surface 11 in an inclined state. This allows the main body 200 to be charged to be placed on the charging support surface 11 when the camera decorative piece 210 is large. The bottom edge of the first groove 12 can abut against the bottom edge of the camera decorative piece 210 of the main body 200, keeping the main body 200 stationary. This allows the receiving coil 220 on the main body 200 to be charged to be aligned with the transmitting coil 21 on the wireless charging device 100.

[0105] Optional, please refer to Figure 9 The tilt angle θ between the charging bearing surface 11 and the charging bottom surface 14 is 0° to 30°. If the tilt angle between the charging bearing surface 11 and the charging bottom surface 14 is too large, the bottom edge of the camera decorative piece 210 of the main body 200 to be charged may not be able to hook onto the bottom edge of the first groove 12.

[0106] Of course, in other embodiments, the charging bearing surface 11 is planar compared to the charging bottom surface 14.

[0107] Optional, please refer to Figure 10 The charging transmitter coil module 20 further includes a first magnetic attraction module 22. At least a portion of the first magnetic attraction module 22 is disposed around the outer periphery of the transmitter coil 21.

[0108] The first magnetic module 22 includes multiple magnetic blocks arranged around the transmitting coil 21.

[0109] Further, please refer to Figure 10 The charging body 200 also has a second magnetic module 24 inside, at least a portion of which is arranged around the outer periphery of the receiving coil 220. The second magnetic module 24 is magnetically attracted to the first magnetic module 22, thereby aligning the center of the transmitting coil 21 with the center of the receiving coil 220 and improving charging efficiency.

[0110] In one optional embodiment, the first magnetic module 22 is a magnetic ring, and the second magnetic module 24 is a magnetic ring. The size of the first magnetic module 22 is the same as the size of the second magnetic module 24.

[0111] For another alternative implementation, please refer to Figure 11 The first magnetic suction module 22 is arc-shaped.

[0112] Please see Figure 11 The first magnetic suction module 22 includes a first end 221 and a second end 222. The first end 221 and the second end 222 are spaced apart. Both the first end 221 and the second end 222 are adjacent to the bottom edge of the first groove 12.

[0113] A portion of the transmitting coil 21 is located in the gap between the first end 221 and the second end 222 and is adjacent to the bottom edge of the first groove 12. The other portion of the transmitting coil 21 is located in the space surrounded by the first magnetic module 22. A notch is formed between the first end 221 and the second end 222, and the top end of the transmitting coil 21 is located within the notch.

[0114] Furthermore, the first end 221 of the first magnetic module 22, the top end of the transmitting coil 21, and the second end 222 of the first magnetic module 22 are arranged sequentially along the width direction X and are all adjacent to the bottom edge of the first groove 12.

[0115] Accordingly, please refer to Figure 11 The second magnetic module 24 is arc-shaped. The second magnetic module 24 also includes a third end 241 and a fourth end 242. The third end 241 and the fourth end 242 are spaced apart. Both the third end 241 and the fourth end 242 are adjacent to the bottom edge of the camera decorative piece 210.

[0116] A portion of the receiving coil 220 is located in the gap between the third end 241 and the fourth end 242 and is adjacent to the bottom edge of the camera decorative piece 210. Another portion of the receiving coil 220 is located in the space surrounded by the second magnetic module 24. A gap is formed between the third end 241 and the fourth end 242, and the top end of the receiving coil 220 is located within the gap.

[0117] Furthermore, the third end 241 of the second magnetic module 24, the top end of the receiving coil 220, and the fourth end 242 of the second magnetic module 24 are arranged sequentially along the width direction X and are all adjacent to the bottom edge of the camera decoration 210.

[0118] In this embodiment, the first magnetic module 22 is designed to be arc-shaped, and a gap is formed between the first end 221 and the second end 222 of the first magnetic module 22. The top end of the transmitting coil 21 is located in the gap. Thus, the first end 221 of the first magnetic module 22, the top end of the transmitting coil 21, and the second end 222 of the first magnetic module 22 are all arranged adjacent to each other along the bottom edge of the first groove 12. The transmitting coil 21 is closer to the bottom edge of the first groove 12, so that the wireless charging device 100 can better fit the charging body 200 of the larger camera decorative piece 210. When the size of the camera decoration 210 of the main body 200 to be charged is large, the space of the second magnetic module 24 is compressed. By designing the second magnetic module 24 to be arc-shaped, it can simultaneously accommodate the second magnetic module 24 and the larger camera decoration 210. There is no need to lower the receiving coil 220 when the size of the camera decoration 210 of the main body 200 to be charged is large. That is, the position of the receiving coil 220 remains relatively unchanged, thus enabling better compatibility with other charging docks.

[0119] Please see Figure 12 The wireless charging device 100 also includes a carrier plate 151 and a circuit board 152.

[0120] The transmitting coil 21 and the first magnetic suction module 22 are disposed on the carrier plate 151.

[0121] Further optional information can be found in [link to relevant documentation]. Figure 12 The carrier plate 151 has an inner annular groove 153 and an outer annular groove 154. The first magnetic attraction module 22 is located at the outer annular groove 154 of the carrier plate 151, and the transmitting coil 21 is located at the inner annular groove 153 of the carrier plate 151.

[0122] Please see Figure 12 The wireless charging device 100 also includes a cooling pad 155. The cooling pad 155 is attached to the side of the transmitting coil 21 and the first magnetic module 22 away from the support plate 151 by means of silicone grease.

[0123] Circuit board 152 is disposed on the side of the support plate 151 opposite to the transmitting coil 21. The support plate 151 has through holes. The electrical connection wires of the transmitting coil 21 pass through the through holes to the side where the circuit board 152 is located and are electrically connected to the circuit board 152.

[0124] Please see Figure 12 The wireless charging device 100 also includes a fan assembly 156 and a heat sink assembly 157.

[0125] Please see Figure 12The heat dissipation fin assembly 157 includes a fin body portion 1571 and a fin peripheral portion 1572 disposed on the fin body portion 1571. The heat dissipation fin assembly 157 is fixed to the side of the circuit board 152 opposite to the support plate 151.

[0126] The fin body 1571 is located on the side of the circuit board 152 opposite to the support plate 151. The fan assembly 156 is located on the side of the fin body 1571 opposite to the transmitting coil 21. The fin peripheral portion 1572 is located on the periphery of the fan assembly 156. The fin peripheral portion 1572 is directly opposite the air outlet of the fan assembly 156.

[0127] The wireless charging device 100 provided in this embodiment dissipates heat from the charging transmitter coil module 20 by providing a fan assembly 156 and a heat sink assembly 157 on the back of the charging transmitter coil module 20, thereby reducing the heat generated by the charging transmitter coil module 20 during the charging process.

[0128] Optional, please refer to Figure 12 The circuit board 152 has a cutout area 1521 in the middle. The transmitting coil 21 is also facing one side of the cutout area 1521 of the circuit board 152. The fan assembly 156 is facing the other side of the cutout area 1521 of the circuit board 152. In this way, the heat from the transmitting coil 21 can be conducted to the fan assembly 156 through the cutout area 1521 and the fin body 1571 of the circuit board 152. The fan assembly 156 blows the heat to the peripheral fins 1572, thereby dissipating the heat from the transmitting coil 21.

[0129] Further optional information can be found in [link to relevant documentation]. Figure 12 The wireless charging device 100 also includes a cooling component 158. The cooling component 158 ​​includes, but is not limited to, a TEC cooling pad. The cooling component 158 ​​is located within the hollowed-out area 1521. One side of the cooling component 158 ​​is attached to the support plate 151. The other side of the cooling component 158 ​​is attached to the side of the fin body 1571 opposite to the fan assembly 156. The cooling component 158 ​​is electrically connected to the circuit board 152. The cooling component 158 ​​can reduce the temperature of the transmitting coil 21, thereby further preventing the transmitting coil 21 from overheating.

[0130] It should be noted that, Figure 12 This is a schematic diagram showing the charging transmitter coil module 20, the carrier plate 151, the circuit board 152, the fan assembly 156, the heat sink assembly 157, and the cooling assembly 158 disassembled in sequence.

[0131] This embodiment, by setting up a charging transmitter coil module 20, a support plate 151, a circuit board 152, a fan assembly 156, a heat sink assembly 157, and a cooling assembly 158, not only achieves heat dissipation for the transmitter coil 21, but also achieves a compact design for the charging transmitter coil module 20, the support plate 151, the circuit board 152, the fan assembly 156, the heat sink assembly 157, and the cooling assembly 158, thereby reducing the overall size of the charging transmitter coil module 20, the support plate 151, the circuit board 152, the fan assembly 156, the heat sink assembly 157, and the cooling assembly 158.

[0132] Please see Figure 13 The base 10 has a receiving groove 160. The charging transmitting coil module 20, the support plate 151, the circuit board 152, the fan assembly 156, and the heat sink assembly 157 are all disposed within the receiving groove 160. The opening of the receiving groove 160 is located on the charging support surface 11. The charging transmitting coil module 20, the support plate 151, the circuit board 152, the heat sink assembly 157, and the fan assembly 156 are arranged sequentially from the charging support surface 11 to the charging back side.

[0133] The surface of the charging transmitting coil module 20 facing the charging bearing surface 11 is the outer surface.

[0134] Optional, please refer to Figure 2 and Figure 3 The outer surface of the charging transmitting coil module 20 is flush with the charging bearing surface 11. Thus, when the body to be charged 200 is attached to the charging bearing surface 11, the back of the body to be charged 200 can also be attached to the charging bearing surface 11, and the distance between the transmitting coil 21 and the receiving coil 220 is small. The surface of the charging bearing surface 11 is flat, which facilitates the fixed and flat placement of the body to be charged 200 and prevents it from sliding.

[0135] Optionally, the outer surface of the charging transmitting coil module 20 is recessed relative to the charging bearing surface 11. In this way, when the body to be charged 200 is attached to the charging bearing surface 11, the back of the body to be charged 200 can be attached to the charging bearing surface 11, so that the body to be charged 200 can be fixed and flat and is not easy to slide.

[0136] Optionally, the outer surface of the charging transmitting coil module 20 protrudes from the charging bearing surface 11. The distance between the outer surface of the charging transmitting coil module 20 and the charging bearing surface 11 is less than or equal to 3 mm.

[0137] Optionally, the outer surface of the charging transmitting coil module 20 protrudes from the charging bearing surface 11. The distance between the outer surface of the charging transmitting coil module 20 and the charging bearing surface 11 is less than or equal to 1 mm. If the distance between the outer surface of the charging transmitting coil module 20 and the charging bearing surface 11 is too large, the bottom edge of the camera decorative piece 210 may not be able to hang on the bottom edge of the first groove 12.

[0138] On the one hand, the height of the outer surface of the charging transmitting coil module 20 protruding from the charging bearing surface 11 is less than the thickness of the camera decorative piece 210, so that when the back of the body to be charged 200 is in contact with the outer surface of the charging transmitting coil module 20, part of the camera decorative piece 210 is located in the first groove 12, and the bottom edge of the camera decorative piece 210 can hang on the bottom edge of the first groove 12.

[0139] On the other hand, when the fan assembly 156, the heat sink assembly 157, and the cooling assembly 158 are provided in the receiving slot 160 of the base 10, a cooling conductive element is provided inside the transmitting coil 21. When the back of the subject 200 to be charged can be attached to the outer surface of the charging transmitting coil module 20, the heat generated by the receiving coil 220 of the subject 200 to be charged can also be transferred to the cooling assembly 158 through the cooling pad 155, silicone grease, and cooling conductive element, thereby achieving heat dissipation for the receiving coil 220 of the subject 200 to be charged and reducing the heat generation problem of the receiving coil 220 of the subject 200 to be charged.

[0140] In one alternative implementation, please refer to Figure 13 and Figure 14 The base 10 also has a bottom hole 161 and at least one side hole 162.

[0141] The bottom hole 161 is located at the bottom of the receiving groove 160. The bottom hole 161 connects the inner cavity of the receiving groove 160 with the external environment. The bottom hole 161 is opposite to the air inlet of the fan assembly 156.

[0142] The slot side hole 162 is provided on the side wall of the receiving slot 160. The slot side hole 162 connects the inner cavity of the receiving slot 160 with the external environment. The slot side hole 162 is opposite to the air outlet of the fan assembly 156.

[0143] Alternatively, the number of slot side holes 162 may be multiple, with each slot side hole 162 being opposite to the air outlet of the fan assembly 156.

[0144] In this embodiment, please refer to Figure 15After assembling the charging transmitter coil module 20, the carrier plate 151, the circuit board 152, the heat sink assembly 157, and the fan assembly 156, they are installed in the receiving slot 160, and a bottom hole 161 and at least one side hole 162 are formed in the receiving slot 160 (see [reference]). Figure 13 and Figure 14 This allows cool air to enter the fan assembly 156 through the slot bottom hole 161 during operation, and the fan assembly 156 then directs the cool air through the peripheral fins 1572 (see [reference]). Figure 12 After heat exchange, hot air is blown out through the slot side hole 162. In other words, the base 10 also forms a heat dissipation channel for air exchange.

[0145] In another optional embodiment, the wireless charging device 100 further includes a top shell and a bottom shell, the bottom shell having a bottom slot hole 161 and at least one side slot hole 162. A fan assembly 156 is disposed on the bottom shell, with the air inlet of the fan assembly 156 facing the bottom slot hole 161 and the air outlet of the fan assembly 156 facing the side slot hole 162. The top shell, charging transmitting coil module 20, the carrier plate 151, the circuit board 152, the heat sink assembly 157, the fan assembly 156, and the bottom shell are sequentially assembled in a modular manner to facilitate modular installation into the receiving slot 160.

[0146] In this embodiment, it is not necessary to open the bottom hole 161 and at least one side hole 162 on the base 10. The opening of the receiving groove 160 can be opened on the charging bearing surface 11, or the opening of the receiving groove 160 can be opened on the charging bottom surface 14 and the charging bearing surface 11 is a closed surface.

[0147] Please see Figure 2 This application provides a wireless charging system 1000 according to Embodiment 2. The wireless charging system 1000 includes a charging body 200 and a wireless charging device 100 as described in any of the aforementioned embodiments. The charging body 200 includes a receiving coil 220.

[0148] The charging device 200 includes, but is not limited to, mobile phones, tablets, laptops, wearable devices (smartwatches, smart bracelets, Bluetooth headsets, etc.), drones, robots, digital cameras, and other devices with communication functions.

[0149] Wireless charging devices 100 include, but are not limited to, car wireless charging brackets, wireless charging protective cases, wireless charging devices 100, vertical wireless chargers, magnetic charging boards, magnetic three-in-one chargers (magnetic phone slot + earphone / watch charging slot), magnetic car mounts, car center console charging boards, horizontal charging brackets, etc.

[0150] The wireless charging system 1000 provided in Embodiment 2 of this application includes a main body 200 to be charged and a wireless charging device 100. The main body 200 to be charged includes a receiving coil 220. The wireless charging device 100 includes a transmitting coil 21. When the charging body 200 is placed on the wireless charging device 100, the charging body 200 abuts against the wireless charging device 100. The bottom edge of the camera decorative piece 210 of the charging body 200 can be located on the bottom edge of the wireless charging device 100, or the bottom frame 230 of the charging body 200 can be located on the bottom support part 131 of the wireless charging device 100. When the back of the charging body 200 is attached to the charging bearing surface 11, the distance between the center of the transmitting coil 21 and the center of the receiving coil 220 is less than or equal to 10mm. By designing the charging transmitting coil module 20 and the first groove 12 to be close in the length direction Y, the receiving coil 220 located near the camera decorative piece 210 can be close to the transmitting coil 21 with less offset, thereby improving the coupling coefficient between the transmitting coil 21 and the receiving coil 220, increasing the induced voltage formed in the receiving coil 220, and improving the charging efficiency of the wireless charging device 100 on the charging body 200. It also enables the wireless charging device 100 to be adapted to different models of the device to be charged 200, thereby expanding the application scenarios of the wireless charging device 100.

[0151] Please see Figure 16 This application provides a vehicle 2000 according to Embodiment 3. The vehicle 2000 includes a vehicle body 300 and a wireless charging device 100 as described in any embodiment. The wireless charging device 100 is embedded in or detachably connected to the vehicle body 300. The wireless charging device 100 can be embedded in the vehicle body 300; for example, it can be a vehicle-mounted central charging board. The wireless charging device 100 can be detachably connected to the vehicle body 300; for example, it can be a magnetic vehicle mount or a vehicle-mounted wireless charging bracket. Figure 16 This is a partial schematic diagram of vehicle 2000 and the wireless charging device 100 inside vehicle 2000.

[0152] The vehicle 2000 provided in Embodiment 3 of this application includes a vehicle body 300 and a wireless charging device 100. The wireless charging device 100 includes a transmitting coil 21. The body to be charged 200 includes a receiving coil 220. When the charging body 200 is placed on the wireless charging device 100, the charging body 200 abuts against the wireless charging device 100. The bottom edge of the camera decorative piece 210 of the charging body 200 can be located on the bottom edge of the wireless charging device 100, or the bottom frame 230 of the charging body 200 can be located on the bottom support part 131 of the wireless charging device 100. When the back of the charging body 200 is attached to the charging bearing surface 11, the distance between the center of the transmitting coil 21 and the center of the receiving coil 220 is less than or equal to 10mm. By designing the charging transmitting coil module 20 and the first groove 12 to be close in the length direction Y, the receiving coil 220 located near the camera decorative piece 210 can be close to the transmitting coil 21 with less offset, thereby improving the coupling coefficient between the transmitting coil 21 and the receiving coil 220, increasing the induced voltage formed in the receiving coil 220, and improving the charging efficiency of the wireless charging device 100 on the charging body 200. It also enables the wireless charging device 100 to be adapted to different models of the device to be charged 200, thereby expanding the application scenarios of the wireless charging device 100.

[0153] Please see Figure 17 This application provides a smart home device 3000 according to Embodiment 4. The smart home device 3000 includes a home appliance body 400 and a wireless charging device 100 as described in any embodiment. The wireless charging device 100 is disposed on or detachably connected to the home appliance body 400.

[0154] The wireless charging device 100 is disposed on or detachably connected to the home appliance body 400. For example, the wireless charging device 100 may be a wireless charging pad, a horizontal charging stand, etc., embedded in the home appliance body 400. The home appliance body 400 includes, but is not limited to, beds, sofas, chairs, tables, etc.

[0155] The smart home device 3000 provided in Embodiment 4 of this application includes a home appliance body 400 and a wireless charging device 100. The wireless charging device 100 includes a transmitting coil 21. The body to be charged 200 includes a receiving coil 220. When the charging body 200 is placed on the wireless charging device 100, the charging body 200 abuts against the wireless charging device 100. The bottom edge of the camera decorative piece 210 of the charging body 200 can be located on the bottom edge of the wireless charging device 100, or the bottom frame 230 of the charging body 200 can be located on the bottom support part 131 of the wireless charging device 100. When the back of the charging body 200 is attached to the charging bearing surface 11, the distance between the center of the transmitting coil 21 and the center of the receiving coil 220 is less than or equal to 10mm. By designing the charging transmitting coil module 20 and the first groove 12 to be close in the length direction Y, the receiving coil 220 located near the camera decorative piece 210 can be close to the transmitting coil 21 with less offset, thereby improving the coupling coefficient between the transmitting coil 21 and the receiving coil 220, increasing the induced voltage formed in the receiving coil 220, and improving the charging efficiency of the wireless charging device 100 on the charging body 200. It also enables the wireless charging device 100 to be adapted to different models of the device to be charged 200, thereby expanding the application scenarios of the wireless charging device 100.

[0156] The wireless charging device 100 provided in this application effectively accommodates charging subjects 200 with different coil positions and different magnetic attraction states. The first groove 12 is used to accommodate the camera decoration 210. The bottom edge of the first groove 12 contacts the bottom edge of the camera decoration 210 of the charging subject 200 to achieve support and fixation. For non-magnetically attracted charging subjects 200, the bottom edge of the camera decoration 210 falls into the first groove 12. If the bottom edge of the camera decoration 210 is small (the camera decoration 210 is relatively small), the bottom frame 230 of the charging subject 200 is in contact with the bottom support 131. If the bottom edge of the camera decoration 210 is large (the camera decoration 210 is relatively large), the bottom edge of the camera decoration 210 is tangent to the bottom edge of the first groove 12 (for most charging subjects 200 with large camera decorations 210, the wireless charging coil is close to the bottom edge of the camera decoration 210, and the shapes are tangent), thus achieving fixation. Both of the above fixing methods cleverly utilize structural features to achieve the alignment of the main body 200 to be charged, thereby controlling the coil misalignment to a small extent.

[0157] When a wireless charging device 100 with a magnetic module 22 charges a device 200 without the magnetic module 22, the magnetic module 22 protrudes from the device 100, making it difficult to fix the device 200 flat and aligned. The device 200 is prone to sliding or even falling off, resulting in a poor user experience. However, for a device 200 with a magnetic module 22, whether the magnetic module 22 is built-in or has a magnetic shell, it can attract the wireless charging device 100, thus securing the device 200 to the device.

[0158] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, and such improvements and refinements are also considered to be within the protection scope of this application.

Claims

1. A wireless charging device, comprising: The base has a charging bearing surface for abutting the back of the body to be charged; the base has a first groove with a groove opening on the charging bearing surface, the first groove being used to accommodate the part of the body to be charged protruding from the charging bearing surface when the back of the body to be charged is abutted to the charging bearing surface; and The charging transmitting coil module is at least partially arranged in the base, and is used to charge the body to be charged. The charging transmitting coil module is arranged adjacent to the first groove, and includes a transmitting coil. The distance between the charging transmitting coil module and the first groove in the length direction is less than or equal to a first preset distance, so that the center of the transmitting coil is aligned with the center of the receiving coil of the body to be charged when the back of the body to be charged is abutted to the charging bearing surface. The first preset distance is 20 mm.

2. The wireless charging device of claim 1, wherein, The base includes a bottom support portion protruding on the charging bearing surface. The distance between the bottom support portion and the first groove is greater than or equal to a second preset distance. The bottom support portion is in abutment with or spaced apart from the bottom frame of the body to be charged.

3. The wireless charging device of claim 1, wherein, When the bottom support portion is spaced apart from the bottom frame of the body to be charged, the bottom edge of the first groove is in abutment with the bottom edge of the camera decoration piece of the body to be charged.

4. The wireless charging device of claim 3, wherein, The size of the first groove in the width direction is greater than or equal to a, where a is the size of the body to be charged in the width direction.

5. The wireless charging device of claim 1, wherein, The size of the first groove in the depth direction is greater than or equal to b, where b is the thickness size of the camera decoration piece of the body to be charged. The size of the first groove in the length direction is greater than or equal to c, where c is the distance between the bottom edge of the camera decoration piece and the top frame of the body to be charged. The base includes a bottom support portion protruding on the charging bearing surface. The distance between the center of the transmitting coil and the bottom support portion is greater than or equal to a third preset distance and less than or equal to a fourth preset distance. When the bottom support portion supports the bottom frame of the body to be charged, the distance between the center of the transmitting coil and the center of the receiving coil is less than or equal to 10 mm.

6. The wireless charging device of claim 1, wherein, The base further includes a charging bottom surface. The charging bearing surface is arranged obliquely relative to the charging bottom surface.

7. The wireless charging device of claim 1, wherein, The charging transmitting coil module further includes a magnetic attraction module. At least part of the magnetic attraction module is arranged around the outer periphery of the transmitting coil.

8. The wireless charging device according to any one of claims 1 to 7, wherein The magnetic attraction module is arc-shaped. The magnetic attraction module includes a first end portion and a second end portion. The first end portion and the second end portion are spaced apart. The first end portion and the second end portion are arranged adjacent to the bottom edge of the first groove. Part of the transmitting coil is arranged in the gap between the first end portion and the second end portion and adjacent to the bottom edge of the first groove. Another part of the transmitting coil is arranged in the space surrounded by the magnetic attraction module.

9. The wireless charging device of claim 8, wherein, ​ 10. The wireless charging device of claim 9, wherein, The wireless charging device further comprises a bearing plate and a circuit board, the transmitting coil and the magnetic attraction module are arranged on the bearing plate, and the circuit board is arranged on the side of the bearing plate away from the transmitting coil; The wireless charging device further comprises a fan assembly and a heat dissipation fin assembly, the heat dissipation fin assembly comprises a fin body part and a fin peripheral part arranged on the fin body part, the fin body part is located on the side of the circuit board away from the bearing plate, the fan assembly is located on the side of the fin body part away from the transmitting coil, and the fin peripheral part is located on the periphery of the fan assembly, and the fin peripheral part is opposite to the air outlet of the fan assembly.

11. The wireless charging device of claim 10, wherein, The middle part of the circuit board has a hollow area, and the fan assembly is opposite to the hollow area; The wireless charging device further comprises a refrigeration assembly, the refrigeration assembly is located in the hollow area, one side of the refrigeration assembly is attached to the bearing plate, and the other side of the refrigeration assembly is attached to the side of the fin body part away from the fan assembly.

12. The wireless charging device of claim 10, wherein, The base has a receiving groove, and the charging transmitting coil module, the bearing plate, the circuit board, the fan assembly and the heat dissipation fin assembly are arranged in the receiving groove, and the groove opening of the receiving groove is located on the charging bearing surface; The surface of the charging transmitting coil module facing the charging bearing surface is an outer surface, the outer surface of the charging transmitting coil module is flush with the charging bearing surface, or the outer surface of the charging transmitting coil module is recessed compared with the charging bearing surface, or the outer surface of the charging transmitting coil module protrudes from the charging bearing surface, and the distance between the outer surface of the charging transmitting coil module and the charging bearing surface is less than or equal to 3mm.

13. The wireless charging device of claim 12, wherein, The base further has a groove bottom hole and at least one groove side hole, the groove bottom hole is arranged on the groove bottom of the receiving groove, the groove bottom hole is communicated between the inner cavity of the receiving groove and the external environment, the groove bottom hole is opposite to the air inlet of the fan assembly, and the groove side hole is arranged on the side wall of the receiving groove, the groove side hole is communicated between the inner cavity of the receiving groove and the external environment, and the groove side hole is opposite to the air outlet of the fan assembly.

14. A wireless charging system, comprising: The wireless charging system comprises a charging object and the wireless charging device according to any one of claims 1-13, and the charging object comprises a receiving coil. The wireless charging device comprises a transmitting coil, and when the charging object is abutted with the wireless charging device, the distance between the center of the transmitting coil and the center of the receiving coil is less than or equal to 10mm when the back surface of the charging object is attached to the charging bearing surface.

15. A vehicle characterized by comprising: The vehicle comprises a vehicle body and the wireless charging device according to any one of claims 1-13, and the wireless charging device is embedded in or detachably connected to the vehicle body.

16. A smart home device, comprising: The smart home device comprises a home body and the wireless charging device according to any one of claims 1-13, and the wireless charging device is arranged on the home body.

Images