Charging apparatus

Abstract

The present application relates to a charging apparatus, which is used for charging an electronic device. The charging apparatus comprises a housing, a bottom cover, a coil module, and a charging module, wherein an accommodating cavity is provided in the housing; the bottom cover is mounted on the housing, so as to cover the accommodating cavity; the charging module is mounted in the accommodating cavity; and the coil module is mounted at the end of the housing away from the bottom cover and is electrically connected to the charging module. The charging apparatus further comprises a spacing portion, which is mounted on the housing and is located between the coil module and the charging module. The electronic device is in contact with the coil module, such that the charging apparatus can wirelessly charge the electronic device on the basis of the principle of electromagnetic induction. During the operation of the charging apparatus, the temperature of the charging module rises, and the provision of the spacing portion between the coil module and the charging module can reduce the likelihood of heat transfer from the charging module to the coil module, such that the temperatures of the coil module and the electronic device are less affected by the charging module, thereby improving the charging power of the charging apparatus for the electronic device and helping to shorten the charging duration for the electronic device.

Description

A charging device Technical Field

[0001] This application relates to the field of electronic devices, and more particularly to a charging device. Background Technology

[0002] With the development of technology, many electronic devices have wireless charging capabilities, allowing them to charge their batteries wirelessly. The charging device includes a coil module; when an electronic device is brought close to the coil module, it is charged through electromagnetic induction.

[0003] During operation, existing charging devices generate heat from their internal electronic components, which raises the temperature of smart electronic devices. When the temperature reaches a set threshold, the charging power of the charging device decreases. On the other hand, during the charging process, it is inconvenient for users to observe the screen of the smart electronic device. Summary of the Invention

[0004] In view of this, this application provides a charging device to solve the above-mentioned problems existing in the wireless charging process of smart electronic devices.

[0005] In a first aspect, embodiments of this application provide a charging device, the charging device comprising: a housing and a bottom cover, the housing having a receiving cavity, the bottom cover being installed on the housing to cover the receiving cavity; a coil module being installed on one end of the housing away from the bottom cover; a charging module being installed in the receiving cavity and electrically connected to the coil module; and a spacer being installed on the housing and located between the coil module and the charging module.

[0006] The charging device provided in this application includes a spacer portion installed in the housing and located between the coil module and the charging module. When the electronic device contacts the coil module, the charging device can wirelessly charge the electronic device using electromagnetic induction. During operation, the temperature of the charging module rises. The spacer portion between the coil module and the charging module reduces the possibility of heat transfer from the charging module to the coil module, minimizing the impact of the charging module on the temperature of both the coil module and the electronic device. This improves the charging power of the charging device and helps shorten the charging time for the electronic device.

[0007] Secondly, embodiments of this application provide a charging device, comprising: a housing, wherein a receiving cavity is provided within the housing, the surface of the housing includes a bottom surface and a charging surface, the bottom surface is located at the bottom of the housing, and the charging surface is located at the top of the housing and spaced apart from the bottom surface; a coil module, wherein the coil module is located in the receiving cavity, and the signal transmitting surface of the coil module is disposed towards the charging surface; a charging module, wherein the charging module is located in the receiving cavity and is electrically connected to the coil module; and a plug, wherein the plug is mounted on the housing, the plug is electrically connected to the charging module, and the plug is exposed on the bottom surface; wherein the charging surface is inclined relative to the bottom surface, and in a projection perpendicular to the bottom surface, the projection of the charging surface is located within the projection range of the bottom surface.

[0008] The charging device provided in this application includes a housing. The housing surface includes a bottom surface and a charging surface. The charging surface is inclined relative to the bottom surface. When the charging module charges the electronic device, the side of the electronic device with the screen can be tilted towards the user, making it easier for the user to view the screen of the electronic device during charging. In the projection along the perpendicular to the bottom surface, the projection of the charging surface is located within the projection range of the bottom surface, reducing the possibility of the electronic device slipping off the charging surface.

[0009] Thirdly, embodiments of this application provide a charging device, comprising: a housing having a receiving cavity and a first mounting portion, the housing further comprising a heat insulation module located between the receiving cavity and the first mounting portion; a coil module mounted on the first mounting portion; and a charging module mounted within the receiving cavity and electrically connected to the coil module; wherein the heat insulation module comprises a support plate and a heat insulation element located on the side of the support plate closer to the coil module and / or away from the coil module.

[0010] The charging device provided in this application includes a heat insulation module located between a receiving cavity and a first mounting portion. A coil module is mounted on the first mounting portion, and a charging module is mounted within the receiving cavity. The heat insulation module includes a support plate and a heat insulation component. The heat insulation component is located on the side of the support plate closer to the coil module and / or on the side farther from the coil module, reducing the possibility of heat generated by the charging module being conducted to the coil module. This minimizes the influence of the charging module's temperature on the temperature of the coil module and the electronic device, thereby increasing the charging power of the charging device for the electronic device and shortening the charging time.

[0011] Fourthly, embodiments of this application provide a charging device, comprising: a housing having a receiving cavity and a first mounting portion, the housing further comprising a spacer portion located between the receiving cavity and the first mounting portion; a coil module mounted on the first mounting portion; and a charging module mounted within the receiving cavity and electrically connected to the coil module; wherein the coil module comprises a magnetic element, a coil, and a heat spreader, the coil being disposed around the magnetic element and electrically connected to the charging module, and the heat spreader being located on the side of the magnetic element and the coil closer to the charging module.

[0012] The charging device provided in this application includes a coil module, which comprises a magnetic component and a coil. A heat-spreading component is disposed on the side of the magnetic component and the coil closest to the charging module. During operation, the temperature of the coil and the charging module rises and is conducted to the heat-spreading component. The heat-spreading component can conduct heat to the magnetic component or the outer casing, reducing the possibility of heat concentration and high local temperatures within the coil module, which is beneficial for improving the charging efficiency of electronic devices.

[0013] Fifthly, embodiments of this application provide a charging device, comprising: a housing having a receiving cavity and a first mounting portion, the housing further comprising a spacer portion located between the receiving cavity and the first mounting portion; a coil module mounted on the first mounting portion; a charging module mounted in the receiving cavity and electrically connected to the coil module; and a mounting member mounted in the first mounting portion, the end of the mounting member protruding from the first mounting portion and disposed around the coil module.

[0014] The charging device provided in this application includes a housing with a receiving cavity and a first mounting portion. The housing also includes a spacer portion located between the receiving cavity and the first mounting portion. A mounting member is installed in the first mounting portion, with its end protruding from the first mounting portion and surrounding the coil module. The mounting member can separate the coil module and the spacer portion, thereby improving the heat insulation effect between the coil module and the charging module and reducing the temperature of the coil module during charging.

[0015] In a sixth aspect, embodiments of this application provide a charging device, comprising: a housing having a receiving cavity and a first mounting portion, the housing further having a spacer portion located between the receiving cavity and the first mounting portion; a coil module mounted on the first mounting portion; and a charging module mounted in the receiving cavity and electrically connected to the coil module; wherein the charging module includes a first circuit board, the coil module includes a second circuit board, the second circuit board is mounted on the first circuit board and electrically connected to the first circuit board, and the first circuit board and the second circuit board have an included angle of non-zero degrees.

[0016] The charging device provided in this application includes a coil module, which includes a second circuit board. The charging module includes a first circuit board, and the second circuit board is mounted on and electrically connected to the first circuit board. The second circuit board is located within a receiving cavity, which reduces the possibility of heat generated by the second circuit board being conducted to the electronic device, thereby improving the charging efficiency of the charging device for the electronic device. The first circuit board and the second circuit board have a non-zero angle between them, which improves the space utilization within the receiving cavity. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 is a schematic diagram of the structure of a charging device provided in an embodiment of this application.

[0019] Figure 2 is a cross-sectional schematic diagram of the charging device shown in Figure 1.

[0020] Figure 3 is a cross-sectional schematic diagram of the coil module shown in Figure 2.

[0021] Figure 4 is a cross-sectional schematic diagram of the shell shown in Figure 2.

[0022] Figure 5 is a cross-sectional schematic diagram of a charging device provided in an embodiment of this application.

[0023] Figure 6 is a schematic diagram of the charging module shown in Figure 2.

[0024] Figure 7 is a cross-sectional schematic diagram of a charging device provided in an embodiment of this application.

[0025] Figure 8 is a schematic diagram of the structure of a charging device provided in an embodiment of this application.

[0026] Figure 9 is a cross-sectional schematic diagram of the charging device shown in Figure 8.

[0027] Figure 10 is a schematic diagram of the support frame shown in Figure 9 at an angle.

[0028] Figure 11 is a structural schematic diagram of the support frame shown in Figure 10 from another angle.

[0029] Figure 12 is a schematic diagram of the telescopic line module shown in Figure 8.

[0030] Figure 13 is an exploded view of the telescopic line module shown in Figure 12.

[0031] Figure 14 is a schematic diagram of the structure of the winding assembly shown in Figure 13.

[0032] Figure 15 is an exploded view of a charging device provided in an embodiment of this application.

[0033] Figure 16 is a cross-sectional schematic diagram of the shell shown in Figure 15.

[0034] Figure 17 is a cross-sectional schematic diagram of a charging device provided in an embodiment of this application.

[0035] Figure 18 is a schematic diagram of the structure of a charging module provided in an embodiment of this application.

[0036] Figure 19 is a schematic diagram of the structure of a charging device provided in an embodiment of this application.

[0037] Figure 20 is a cross-sectional schematic diagram of the charging device shown in Figure 19.

[0038] Figure 21 is an exploded view of the charging device shown in Figure 19.

[0039] Figure 22 is a cross-sectional schematic diagram of the heat insulation module shown in Figure 20.

[0040] Figure 23 is an exploded view of an embodiment of the heat insulation module shown in Figure 20.

[0041] Figure 24 is an exploded view of another embodiment of the heat insulation module shown in Figure 20.

[0042] Figure 25 is an exploded view of the heat spreader layer of the heat insulation module shown in Figure 24.

[0043] Figure 26 is a schematic diagram of the structure of a charging module and heat sink provided in an embodiment of this application.

[0044] Figure 27 is an exploded view of the charging module and heat sink shown in Figure 26.

[0045] Figure 28 is a schematic diagram of the structure of a heat spreader provided in an embodiment of this application.

[0046] Figure 29 is a schematic diagram of the structure of a heat spreader provided in an embodiment of this application.

[0047] Figure 30 is an exploded view of a charging device provided in an embodiment of this application.

[0048] Figure 31 is a schematic diagram of the structure of a separator provided in an embodiment of this application.

[0049] Figure 32 is a structural schematic diagram of the separator shown in Figure 31 from another angle.

[0050] Figure 33 is an exploded view of a charging device provided in an embodiment of this application.

[0051] Figure 34 is a schematic diagram of the structure of a charging module provided in an embodiment of this application. Detailed Implementation

[0052] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0053] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0054] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0055] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0056] [First Embodiment]

[0057] As shown in Figures 1 and 2, a first embodiment of this application provides a charging device, including a housing 11, a bottom cover 12, a coil module 2, and a charging module 3. The housing 11 has a receiving cavity 110. The bottom cover 12 is installed on the housing 11 to cover the receiving cavity 110. The charging module 3 is installed inside the receiving cavity 110. The coil module 2 is installed at one end of the housing 11 away from the bottom cover 12 and is electrically connected to the charging module 3. The charging device also includes a spacer 112, which is installed on the housing 11 and located between the coil module 2 and the charging module 3.

[0058] The coil module 2 is electrically connected to the charging module 3, which generates current in the coil module 2. When electronic devices such as smartwatches come into contact with the coil module 2, the charging device can wirelessly charge the electronic devices through the principle of electromagnetic induction. During the operation of the charging device, the temperature of the charging module 3 will rise. If the temperature of the coil module 2 and the electronic device rises with the temperature of the charging module 3, when the temperature reaches the threshold set by the electronic device, the charging power of the charging device for the electronic device will decrease, resulting in a longer charging time.

[0059] An interval 112 is provided between the coil module 2 and the charging module 3. The interval 112 is, for example, a heat insulation component, which can reduce the rate at which heat in the charging module 3 is transferred to the coil module 2, so that the temperature of the coil module 2 and the electronic device is less affected by the charging module 3, thereby increasing the charging power of the charging device for the electronic device and helping to shorten the charging time of the electronic device.

[0060] As shown in Figures 1 and 2, the cross-sectional area of ​​the housing 11 gradually decreases along the direction from the bottom cover 12 towards the coil module 2, which reduces the size of the charging device and makes it easier to carry. For example, in electronic devices such as smartwatches, the charging position is provided with structures such as watch straps on both sides. The gradual decrease in the cross-sectional area of ​​the housing 11 along the direction from the bottom cover 12 towards the coil module 2 reduces the structure around the coil module 2, thereby reducing the possibility of interference between the housing 11 and the watch straps, etc. This avoids excessive distance or misalignment between the coil inside the smartwatch and the coil of the coil module 2, which could lead to reduced wireless charging efficiency or even failure to charge. Therefore, it improves the stability and charging efficiency during charging.

[0061] As shown in Figure 2, in one possible embodiment, the housing 11 has an opening on the side away from the bottom cover 12, and the coil module 2 is located at the opening, so that the surface of the coil module 2 protrudes from the receiving cavity 110, which facilitates contact between the electronic device and the coil module 2, reduces the distance between the electronic device and the coil module 2, and helps to improve charging efficiency.

[0062] As shown in Figures 2 and 3, in one possible embodiment, the coil module 2 includes a cover plate 21, a first magnetic element 22, a magnetic shielding element 23, and a coil 24. The magnetic shielding element 23 includes a first receiving groove 231 and a second receiving groove 232. The second receiving groove 232 is arranged around the first receiving groove 231. The first magnetic element 22 is located in the first receiving groove 231, and the coil 24 is located in the second receiving groove 232. The side of the magnetic shielding element 23 with the receiving groove is connected to the cover plate 21. The cover plate 21, like the housing 11 and the bottom cover 12, is a component of the outer shell 1 of the charging device.

[0063] The back of the electronic device is covered with metallic materials such as iron, nickel, and cobalt that can be attracted by magnets. When the electronic device is placed in the charging device, the first magnetic component 22 and the electronic device are located on opposite sides of the cover plate 21. The first magnetic component 22 can attract the electronic device, increasing the pressure between the electronic device and the cover plate 21, thereby increasing friction and reducing the possibility of the electronic device slipping during charging. The coil 24 wirelessly charges the electronic device through electromagnetic induction. Placing the coil 24 and the first magnetic component 22 in different receiving slots of the magnetic shielding component 23 can reduce the possibility of the first magnetic component 22 disturbing the magnetic field generated by the coil 24, which helps to improve the stability of the charging process.

[0064] During charging, the electronic device is placed on the side of the cover plate 21 away from the coil 24. Therefore, the surface shape of the side of the cover plate 21 away from the coil 24 can be set according to the shape of the electronic device, so that the electronic device can fit with the cover plate 21 and reduce the possibility of the electronic device slipping off. As shown in Figure 2, the middle part of the cover plate 21 is provided with a concave arc surface, which can fit with the arc protrusion on the back of the electronic device.

[0065] As shown in Figure 2, in one embodiment, the coil module 2 is tilted, with the angle between the coil module 2 and the horizontal direction being less than or equal to 45°. During charging, the electronic device is placed on the surface of the coil module 2, and the tilted coil module 2 facilitates the user's viewing of the electronic device's screen during charging.

[0066] As shown in Figures 2 and 4, in one possible embodiment, the spacer 112 and the housing 11 are integrally formed, and a first mounting portion 111 is formed at the opening position, so that the coil module 2 is separated from the receiving cavity 110, reducing the possibility of heat generated by the charging module 3 in the receiving cavity 110 being conducted to the coil module 2, which is beneficial to reducing the temperature of the coil module 2 and the electronic device, thereby improving the charging power; the cover plate 21 is connected to the inner wall of the first mounting portion 111; the first mounting portion 111 is, for example, a groove structure, and in other embodiments, the first mounting portion 111 can also be a through hole structure communicating with the receiving cavity 110.

[0067] The cover plate 21 can be fixed to the side wall of the first mounting part 111 by means of adhesive, snap-fit, etc., so that the coil 24 assembly is located in the first mounting part 111 and there is a gap between it and the bottom wall of the first mounting part 111, which can reduce the possibility of heat in the receiving cavity 110 being conducted to the coil module 2 through the spacer part 112.

[0068] As shown in Figure 4, in one possible embodiment, the bottom wall of the first mounting part 111 is provided with a first through hole 1111, and a wire is provided in the first through hole 1111 to connect the coil module 2 and the charging module 3.

[0069] The coil module 2 and the charging module 3 are electrically connected via wires, allowing current to flow through the coil module 2 and thus charge the electronic device. The bottom wall of the first mounting portion 111 has a first through hole 1111 to facilitate the electrical connection between the coil module 2 and the charging module 3. It should be understood that when the first mounting portion 111 is a through hole structure, i.e., when the first mounting portion 111 has no bottom wall, the wires can directly pass through the first mounting portion 111 and connect to the charging module 3.

[0070] In one possible embodiment, a spring pin is provided on the spacer portion 112. One end of the spring pin protrudes from the bottom wall of the first mounting portion 111 and can be electrically connected to the coil module 2. The other end of the spring pin extends into the receiving cavity 110 and is electrically connected to the charging module 3. The coil module 2 and the charging module 3 can be connected by the spring pin. During installation, the coil module 2 only needs to contact the spring pin, which can reduce the installation difficulty of the charging device.

[0071] As shown in Figure 5, in one possible embodiment, the spacer 112 is connected to the inner wall of the receiving cavity 110. The charging module 3 is located on the side of the spacer 112 closer to the bottom cover 12, and the coil module 2 is located on the side of the spacer 112 away from the bottom cover 12. The spacer 112 has a stepped cross-section. The spacer 112 divides the receiving cavity 110 into a first cavity 1101 and a second cavity 1102. The coil module 2 is located in the first cavity 1101, and the charging module 3 is located in the second cavity 1102. This reduces the possibility of heat conduction from the second cavity 1102 to the first cavity 1101, which is beneficial for reducing the temperature of the coil module 2 and the electronic device. The charging module 3 includes multiple electronic devices 32, each with a different height. Therefore, the height of the side of the charging module 3 facing the spacer 112 is different. The stepped cross-section of the spacer 112 corresponds to the shape of the charging module 3, which improves the space utilization within the receiving cavity 110 and helps to reduce the size of the charging device. Through holes, spring pins, and other structures can also be provided on the stepped cross-section of the interval 112 to electrically connect the coil module 2 and the charging module 3.

[0072] In one possible embodiment, a heat insulation layer is provided on the side of the spacer 112 facing the coil module 2, and / or a heat insulation layer is provided on the side of the spacer 112 facing the charging module 3. The heat insulation layer can be a sheet made of heat insulation material, fixed to the surface of the spacer 112 by means of adhesive or other methods. The heat insulation layer can also be a coating made of heat insulation material, applied to the surface of the spacer 112 by coating. The heat insulation layer can further improve the heat insulation effect of the spacer 112, reduce the heat generated by the charging module 3 from being conducted to the coil module 2, reduce the temperature of the coil module 2 and the electronic device, thereby extending the time that the coil module 2 can maintain high-power wireless charging for the electronic device, and thus improving the charging efficiency.

[0073] In one possible embodiment, a heat sink is provided on the housing 11, which surrounds the cover plate 21 and communicates with the receiving cavity 110. As shown in FIG1, the cover plate 21 exposed to the outside of the coil module 2 is circular, and the exposed portion of the heat sink surrounds the outer periphery of the cover plate 21 and is in an annular shape.

[0074] The heat sink has high thermal conductivity and is connected to the receiving cavity 110, which allows the heat sink to conduct the heat generated by the charging module 3 in the receiving cavity 110, thereby reducing the temperature in the receiving cavity 110 and thus reducing the temperature of the coil module 2, which is beneficial to improving the charging power.

[0075] In one possible embodiment, the heat sink can also be located at other positions on the housing 11 so that it can communicate with the receiving cavity 110.

[0076] In one possible embodiment, the heat sink can be a mesh structure, allowing the receiving cavity 110 to communicate with the external space. High-temperature gas inside the receiving cavity 110 can be discharged through the mesh structure, carrying away the heat inside the receiving cavity 110, while room-temperature gas from the external environment can enter the receiving cavity 110 through the mesh structure to reduce the temperature inside the receiving cavity 110.

[0077] In one possible embodiment, a breathable and waterproof membrane is provided on the heat sink, which is located on the side of the heat sink facing the receiving cavity 110 or on the side away from the receiving cavity 110 and completely covers the heat sink.

[0078] The heat sink is connected to the housing cavity 110 and has a mesh structure, which will affect the waterproof effect of the charging device. Water entering the housing cavity 110 will cause the charging module 3 to short circuit. By setting a breathable waterproof membrane on the heat sink, the heat inside the housing cavity 110 can be carried away by air circulation, and the waterproof effect of the charging device can be improved, reducing the possibility of water entering the housing cavity 110.

[0079] As shown in Figure 6, in one possible embodiment, the charging module 3 includes a first circuit board 31 and a plurality of electronic devices 32. The plurality of electronic devices 32 are all mounted on the first circuit board 31 and electrically connected through the first circuit board 31. Some of the plurality of electronic devices 32 are mounted on the side of the first circuit board 31 closer to the coil module 2, and other parts are mounted on the side of the first circuit board 31 away from the coil module 2.

[0080] The multiple electronic components 32 include a transformer 321, a high-voltage electrolytic capacitor 322, a low-voltage solid-state capacitor 323, and a main control chip 324. Specifically, the transformer 321, high-voltage electrolytic capacitor 322, and low-voltage solid-state capacitor 323 are mounted on the side of the first circuit board 31 closest to the coil module 2, while the main control chip 324 is mounted on the side of the first circuit board 31 furthest from the coil module 2. During the operation of the charging device, the multiple electronic components 32 will generate a large amount of heat. By distributing the multiple electronic components 32 on both sides of the first circuit board 31, the heat source can be dispersed, reducing the possibility of excessively high temperatures inside the receiving cavity 110 due to concentrated heat. The installation positions of the multiple electronic components 32 can be adjusted according to the space inside the receiving cavity 110 to improve the utilization rate of the receiving space, thereby reducing the size of the charging device.

[0081] As shown in Figures 2 and 4, in one possible embodiment, the inner wall of the receiving cavity 110 is provided with a plurality of protrusions 113, which are spaced apart circumferentially along the receiving cavity 110. After the charging device is installed in the receiving cavity 110, the plurality of protrusions 113 abut against the sidewall of the first circuit board 31.

[0082] Multiple protrusions 113 abut against the sidewall of the first circuit board 31, so that the first circuit board 31 and the protrusions 113 are interference-fitted, and the first circuit board 31 can be fixed in the receiving cavity 110. Preferably, the protrusions 113 extend vertically along the inner wall of the receiving cavity 110, and the multiple protrusions 113 can be arranged axially symmetrically, so that the first circuit board 31 is more stable after being installed in the receiving cavity 110.

[0083] In one possible embodiment, the coil module 2 includes a second circuit board, which is a wireless charging circuit board. The wireless charging circuit board is electrically connected to both the coil 24 and the first circuit board, allowing current to flow through the coil 24. During charging, the wireless charging circuit board generates heat. Therefore, by placing the wireless charging circuit board within the receiving cavity 110, the possibility of heat conduction to the coil 24 and the electronic device can be reduced. The wireless charging circuit board can be fixed to the first circuit board 31 and forms an angle with it. Preferably, the wireless charging circuit board and the first circuit board 31 are perpendicular to each other, which improves the space utilization within the receiving cavity 110.

[0084] In one possible embodiment, the charging module 3 further includes a third circuit board, which forms an angle with the first circuit board 31 and is fixedly connected to the first circuit board 31. Some electronic components 32 are mounted on the third circuit board. The angle between the third circuit board and the first circuit board 31 allows the electronic components 32 to be arranged in different directions within the receiving cavity 110, improving the space utilization within the receiving cavity 110 and facilitating a reduction in the size of the charging device. Preferably, the third circuit board is perpendicular to the first circuit board 31.

[0085] As shown in Figure 7, in one possible embodiment, the first circuit board 31 is arranged parallel to the coil module 2, and multiple electronic devices 32 are respectively mounted on both sides of the first circuit board 31. The parallel arrangement of the first circuit board 31 and the coil module 2 increases the distance between the electronic devices 32 and the coil module 2, allowing high-heat-generating electronic devices (such as transformer 321, high-voltage electrolytic capacitor 322, etc.) to be positioned as far away from the coil module 2 as possible. This reduces the efficiency of heat conduction, which helps to lower the temperature of the coil module 2 and the electronic equipment, thereby improving charging efficiency.

[0086] As shown in Figure 6, in one possible embodiment, the charging device further includes a connector 33, which is electrically connected to the charging module 3. The housing 11 has a through-hole aligned with the connector 33, allowing the connector 33 to connect to an external data cable. The connector 33, electrically connected to the charging module 3, can serve as a power input terminal. The connector 33 connects to an external power source via the data cable; this external power source can be a portable power supply or a fixed power source, supplying power to the coil module 2 through the charging module 3, enabling the charging device to charge electronic devices via the external power source. The connector 33 can also serve as a power output terminal, connecting to an external electrical appliance via the data cable, allowing the charging device to both charge electronic devices via the coil module 2 and supply power to external electrical appliances via the connector 33.

[0087] As shown in Figures 5 and 6, when the first circuit board 31 is parallel to the bottom cover 12, along the height direction Z of the charging device, the first circuit board 31 is located on the side of the connector 33 away from the coil module 2, and the connector 33 is directly mounted on the first circuit board 31. The connector 33 needs to be electrically connected to the charging module 3. Directly mounting the connector 33 on the first circuit board 31 simplifies the wiring structure within the receiving cavity 110.

[0088] As shown in Figure 7, when the first circuit board 31 is parallel to the coil module 2, a separate circuit board is provided at the end of the connector 33 for mounting the connector 33, and the circuit board with the connector 33 mounted is electrically connected to the first circuit board 31.

[0089] As shown in Figure 7, in one possible embodiment, the connector 33 and the coil module 2 are located on the same side along the length Y of the charging device.

[0090] When the charging device is charging the electronic device, the side with the coil module 2 needs to face the user. The side with the coil module 2 is the front side of the charging device, which makes it easy for the user to view the content on the electronic device. Along the length Y of the charging device, the connector 33 is located on the same side as the coil module 2, so that the connector 33 is also located on the front side facing the user, which makes it easy for the user to connect an external data cable through the connector 33.

[0091] In one possible embodiment, along the height direction Z of the charging device, the connector 33 is located at the end of the housing 11 away from the bottom cover 12 and is electrically connected to the first circuit board 31. The coil module 2 is located at the end of the housing 11 away from the bottom cover 12. When the charging device is charging the electronic device, the electronic device can face the user. The connector 33 is also located on the side of the housing 11 away from the bottom cover 12, making it convenient for the user to plug in the data cable to the connector 33. When the connector 33 is located at the end of the housing 11 away from the bottom cover 12, and the distance between the connector 33 and the charging module 3 is large, making it impossible for the connector 33 to be directly installed on the first circuit board 31, a circuit board for installing the connector 33 can be provided at the tail of the connector 33, and then the connector 33 can be electrically connected to the first circuit board 31 through the circuit board of the connector 33.

[0092] In one possible embodiment, the number of connectors 33 can be set to multiple, for example, connectors 33 are provided on the front and rear sides of the charging device to meet the charging needs of multiple device users.

[0093] As shown in Figure 7, in one possible embodiment, a pin 34 is provided on the side of the bottom cover 12 away from the receiving cavity 110. The pin 34 can be a fixed pin or a folding pin. In this embodiment, the pin 34 is a folding pin to facilitate the user's storage of the charging device; when the pin 34 is extended, it can be plugged into a socket to supply power to the charging device. Along the length direction Y of the charging device, the pin 34 rotates away from the coil module 2 when stored. The bottom cover 12 is provided with a pin 34 storage slot for storing the pin 34, so that the charging device can be placed stably on the table when charging the electronic device through an external power source.

[0094] The socket can be configured in both horizontal and vertical orientations. When the plug 34 is inserted into a vertically oriented socket, the side with the coil module 2 faces upwards. When the plug 34 is retracted, it rotates away from the coil module 2, reducing the possibility of the plug 34 rotating and retracting into the storage slot and detaching from the socket, thus improving the stability of the charging process. It is worth noting that the angle between the coil module 2 and the horizontal direction is preferably set to 45°, ensuring that the tilt angle of the coil module 2 is the same whether the plug 34 is inserted into a vertically or horizontally oriented socket, thereby maintaining the same viewing angle for the user's electronic device screen.

[0095] In one possible embodiment, an insulating element is provided between the pin 34 and the charging module 3. Due to the limited space within the receiving cavity 110, the distance between the first circuit board 31 in the charging module 3 and the pin 34 is small. Providing a thin-film-shaped insulating element between the pin 34 and the charging module 3 can increase the creepage distance between the pin 34 and the conductive contacts in the charging module 3, avoiding creepage or arcing, and improving safety during the charging process. To improve the heat dissipation efficiency inside the charging device, the insulating element is, for example, made of copper sheet with high thermal conductivity, with insulating tape wrapped around the outer surface of the copper sheet.

[0096] As shown in Figures 8 and 9, in one possible embodiment, the charging device further includes a telescopic cable module 4 and a connector 33. The telescopic cable module 4 and the connector 33 are both located within the receiving cavity 110. Along the height direction Z of the charging device, the bottom cover 12, the connector 33, the telescopic cable module 4, the charging module 3, and the coil module 2 are arranged sequentially, and the coil module 2, the connector 33, and the telescopic cable module 4 are all electrically connected to the charging module 3.

[0097] The charging device can wirelessly charge electronic devices via the coil module 2. One end of the data cable can be connected to the charging device via the connector 33, and the other end of the data cable can be connected to an external power source or an electrical appliance, allowing the charging device to charge electronic devices or power electrical appliances via an external power source. The retractable cable module 4 includes a connecting cable 42, which is retractable and stored within the retractable cable module 4. The other end of the connecting cable 42 can be connected to an external power source or an electrical appliance, allowing the charging device to connect to an external power source and wirelessly charge electronic devices via the coil module 2, or power electrical appliances via the charging module 3, without the need to carry a data cable.

[0098] Preferably, the telescopic cable module 4 is installed horizontally within the receiving cavity 110 to improve the utilization of internal space and enable the connecting cable 42 to extend and retract horizontally, making it convenient for users to pull and use.

[0099] As shown in Figure 9, in one possible embodiment, a support frame 5 is provided between the charging module 3 and the bottom cover 12, the telescopic cable module 4 is connected to the support frame 5, and the connector 33 is installed on the bottom cover 12.

[0100] A support frame 5 is mounted on the bottom cover 12, and the charging module 3 is mounted on the support frame 5, which can restrict the position of the charging module 3 within the receiving cavity 110. A telescopic cable module 4 is connected to the support frame 5, which can separate the telescopic cable module 4 from the charging module 3, reducing the possibility of interference between the connecting wire 42 in the telescopic cable module 4 and the charging module 3 during extension and retraction. The bottom cover 12 is provided with a pin 34 and a storage slot for storing the pin 34. The storage slot extends towards the receiving cavity 110, allowing the charging device to be stably placed on the table when the pin 34 rotates into the storage slot. A gap exists between the telescopic cable module 4 and the bottom cover 12, reducing the possibility of interference between the telescopic cable module 4 and the pin 34. The connector 33 is located within the gap between the telescopic cable module 4 and the bottom cover 12 and is mounted on the bottom cover 12, improving the space utilization within the receiving cavity 110. A connector circuit board 331 is provided on the bottom cover 12. The connector circuit board 331 is electrically connected to the charging module 3. The connector 33 is installed on the connector circuit board 331 and is electrically connected to the charging module 3 through the connector circuit board 331.

[0101] As shown in Figures 10, 11 and 12, in one possible embodiment, the support frame 5 includes a support frame base plate 51 and a protective plate 52. The support frame base plate 51 is located between the charging module 3 and the telescopic cable module 4. The protective plate 52 is located on the side of the support frame base plate 51 away from the charging module 3, and the protective plate 52 is located at the edge of the support frame base plate 51, so that the telescopic cable module 4 is located inside the protective plate 52.

[0102] The support frame base plate 51 can separate the charging module 3 and the telescopic cable module 4, reducing the possibility of interference between the connecting wire 42 in the telescopic cable module 4 and the charging module 3 during the extension and retraction process. The guard plate 52 is located at the edge of the support frame base plate 51, so that the guard plate 52 forms a limiting space on the side of the support frame base plate 51 away from the charging module 3. The telescopic cable module 4 is disposed in the limiting space, which can restrict the position of the telescopic cable module 4 in the receiving cavity 110, reducing the possibility of displacement of the connecting wire 42 in the telescopic cable module 4 during the extension and retraction process, which is beneficial to improving the stability of the charging device.

[0103] As shown in Figures 11 and 12, in one possible embodiment, the side of the guard plate 52 facing the telescopic line module 4 is provided with a plurality of limiting protrusions 521. The plurality of limiting protrusions 521 are spaced apart along the circumference of the guard plate 52. The corresponding telescopic line module 4 includes a plurality of recesses 41. The limiting protrusions 521 are located in the recesses 41 to limit the position of the telescopic line module 4.

[0104] The limiting protrusion 521 cooperates with the recess 41 to restrict the position of the telescopic line module 4 within the limiting space, reducing the possibility of the connecting line 42 in the telescopic line module 4 rotating relative to the support frame 5 during the telescopic process, which helps to improve the stability of the connecting line 42 during the telescopic process.

[0105] As shown in Figures 10, 11, and 12, in one possible embodiment, the protective plate 52 includes a first notch 522 and a second notch 523, which are spaced apart along the circumference of the protective plate 52. The first notch 522 is aligned with the exit position of the connecting line 42 in the telescopic line module 4, such that the exit position is located within the first notch 522.

[0106] The first notch 522 is aligned with the outlet position in the telescopic cable module 4, allowing the connecting cable 42 to be pulled out or retracted through the first notch 522. If the length of the connecting cable 42 in the telescopic cable module 4 is long, it will increase the radial dimension of the telescopic cable module 4, allowing part of the telescopic cable module 4 to extend into the second notch 523. The second notch 523 can reduce the restriction of the guard plate 52 on the radial dimension of the telescopic cable module 4.

[0107] As shown in Figures 9, 10, 11, and 12, in one possible embodiment, the retractable cable module 4 includes a connecting cable 42, the end of which is provided with a connecting end 43. The connecting end 43 can be a plug structure, such as a USB Type-C connector, for connecting to an external power source or electrical appliance. The support frame 5 includes a receiving member 53, which is installed at the position of the first notch 522. The receiving member 53 has a receiving groove 531 on the side away from the retractable cable module 4, and the connecting end 43 is placed in the receiving groove 531, so that the connecting end 43 is placed along the width direction X of the charging device, thereby improving the space utilization of the charging device.

[0108] The end of the connecting cable 42 is provided with a connecting end 43, which facilitates the connection of the charging device to an external power source or electrical appliance. When the connecting cable 42 is stored in the telescopic cable module 4, the connecting end 43 cannot be retracted into the telescopic cable module 4. A receiving part 53 is provided to facilitate the storage of the connecting end 43. The housing 11 is provided with a through hole aligned with the receiving groove 531, so that when the connecting end 43 is stored in the receiving groove 531, it can be exposed through the through hole for easy removal. Then, the connecting cable 42 can be pulled out through the connecting end 43.

[0109] As shown in Figures 10 and 11, in one possible embodiment, a third notch 532 is provided at one end of the receiving groove 531 to connect the receiving groove 531 and the first notch 522. The connecting end 43 is located at the end of the connecting line 42. The third notch 532 is provided at the end of the receiving groove 531. The connecting end 43 is connected to the connecting line 42 at the end provided with the third notch 532, so that the connecting line 42 can be pulled out or retracted from the telescopic line module 4 through the first notch 522.

[0110] As shown in Figures 9 and 11, in one possible embodiment, a magnet mounting groove 533 is provided on the side of the receiving member 53 away from the receiving groove 531. A second magnetic element 534 is provided in the magnet mounting groove 533. After the connecting end 43 is placed in the receiving groove 531, it is aligned with the second magnetic element 534 so that the second magnetic element 534 can attract the connecting end 43.

[0111] The receiving groove 531 has a small depth, and the connecting end 43 is easy to slip off after being placed in the receiving groove 531. A second magnetic element 534 is provided on the side of the receiving member 53 away from the receiving groove 531. After the connecting end 43 is placed in the receiving groove 531, it can be attracted by the second magnetic element 534, which can reduce the possibility of the connecting end 43 slipping off and improve the stability of the connecting end 43 in the receiving groove 531.

[0112] As shown in Figures 9, 10 and 11, in one possible embodiment, a first support post 54 is provided on the side of the support frame substrate 51 facing the charging module 3, and the first support post 54 is connected to the charging module 3.

[0113] The charging module 3 includes multiple electronic devices 32 and a first circuit board 31. The multiple electronic devices 32 are mounted on the first circuit board 31, and the first circuit board 31 is mounted on a first support post 54. The first support post 54 can limit the position of the first circuit board 31 within the receiving cavity 110, thereby limiting the position of the charging module 3.

[0114] As shown in Figures 9, 10, and 11, in one possible embodiment, a second support post 55 is provided on the side of the receiving member 53 away from the support frame base plate 51, and the second support post 55 is connected to the bottom cover 12. The connection between the second support post 55 and the bottom cover 12 can limit the position of the support frame 5 within the receiving cavity 110, and at the same time limit the distance between the support frame 5 and the bottom cover 12, so that the connector 33 can be installed between the bottom cover 12 and the support frame 5.

[0115] As shown in Figures 13 and 14, in one possible embodiment, the telescopic cable module 4 includes a winding assembly 44, in which the connecting cable 42 is housed. The winding assembly 44 includes a locking block 441, a rotating disk 442, and a spring sheet 443. A first track 442a and a second track 442b are provided on one side of the rotating disk 442, and a spring sheet 443 is provided on the other side. The connecting cable 42 is wound around the side with the spring sheet 443. When the connecting cable 42 is pulled out, it drives the rotating disk 442 to rotate along a first rotation direction D1. When the connecting cable 42 is retracted, the spring sheet 443 drives the rotating disk 442 to rotate along a second rotation direction D2. The first rotation direction D1 and the second rotation direction D2 are opposite. The locking block 441 is located on the side of the rotating disk 442 where the first track 442a and the second track 442b are provided. When the rotating disk 442 rotates, the locking block 441 moves along either the first track 442a or the second track 442b. The first track 442a and the second track 442b are connected to each other. A limiting member 442c is provided at the connection position. When the connecting line 42 extends to a preset length, the locking block 441 engages with the limiting member 442c.

[0116] The first track 442a is arranged around the second track 442b. The snap-fit ​​block 441 includes a mounting hole 441a and a limiting post 441b. The snap-fit ​​block 441 is installed in the lower cover 46 of the telescopic line module 4 through the mounting hole 441a and can rotate relative to the lower cover 46, so that the limiting post 441b can move along the first track 442a and also along the second track 442b.

[0117] When the connecting wire 42 is wound and stored in the winding assembly 44, the limiting post 441b is located in the second track 442b. When the connecting wire 42 is pulled out, causing the rotating disk 442 to rotate in the first rotation direction D1, the rotating disk 442 rotates until the limiting post 441b contacts the limiting member 442c. At this point, the limiting post 441b slides along the side of the limiting member 442c from the second track 442b to the first track 442a. As the rotating disk 442 continues to rotate in the first rotation direction D1, the limiting post 441b moves along the first track 442a. When the connecting wire 42 is pulled out to the required length, the pulling of the connecting wire 42 is stopped. Under the action of the spring piece 443, the rotating disk 442 rotates in the second rotation direction D2. At this time, the limiting post 441b is located in the first track 442a. The rotating disk 442 rotates until the limiting post 441b contacts the limiting member 442c. When component 442c contacts, the limiting post 441b slides into the limiting groove of the limiting component 442c, causing the limiting post 441b to engage with the limiting component 442c. The rotating disk 442 can no longer rotate along the second rotation direction D2, and the connecting line 42 maintains its pulled-out length. When it is necessary to rewind and store the connecting line 42 in the winding assembly 44, first pull the connecting line 42 outward to disengage the limiting post 441b from the limiting groove. The isolation layer between the first track 442a and the second track 442b has an inclined surface. The limiting post 441b slides along this inclined surface to the second track 442b. Then stop pulling the connecting line 42. Under the action of the spring piece 443, the rotating disk 442 can rotate along the second rotation direction D2, allowing the connecting line 42 to be wound and stored in the winding assembly 44, thereby realizing the start and stop of the connecting line 42 at any length.

[0118] As shown in Figure 13, in one possible embodiment, the telescopic cable module 4 includes a fourth circuit board 48, which is mounted on a rotating disk 442 and is rotatable relative to the rotating disk 442. An electrical contact block 481 is provided on the fourth circuit board 48. The electrical contact block 481 is, for example, a conductive spring arm, and is mounted at a notch in the fourth circuit board 48, allowing it to move with the fourth circuit board 48. A connecting post electrically connected to the connecting line 42 is provided on the side of the electrical contact block 481 facing the winding assembly 44, and a protrusion is provided on the side of the electrical contact block 481 away from the winding assembly 44, protruding from the side of the fourth circuit board 48 away from the winding assembly 44. The telescopic cable module 4 also includes a fifth circuit board 49, located on the side of the fourth circuit board 48 away from the winding assembly 44. A ring-shaped conductive line is provided on the side of the fifth circuit board 49 facing the fourth circuit board 48. A protrusion on the electrical contact block 481 contacts the ring-shaped conductive line, achieving electrical connection between the fourth circuit board 48 and the fifth circuit board 49, thereby enabling electrical connection between the connecting line 42 and the fifth circuit board 49. When the fourth circuit board 48 rotates with the rotating disk 442, the electrical contact block 481 rotates relative to the fifth circuit board 49. The ring-shaped conductive line on the side of the fifth circuit board 49 facing the fourth circuit board 48 ensures that the fourth circuit board 48 can also be electrically connected to the fifth circuit board 49 during rotation.

[0119] As shown in Figures 12 and 13, in one possible embodiment, the telescopic cable module 4 includes an upper cover 45 and a lower cover 46, which are engaged to form a cavity, and the winding assembly 44 is located inside the cavity.

[0120] The winding assembly 44, the fourth circuit board 48, and the fifth circuit board 49 are all located within the cavity formed by the upper cover 45 and the lower cover 46. This reduces the possibility of impurities entering the winding assembly 44 or interference during the extension and retraction of the connecting wire 42, thus improving the stability of the connecting wire 42's extension and retraction process. Outlets are provided on the upper cover 45 and the lower cover 46, allowing the connecting wire 42 to extend or retract into the cavity. A connecting hole 461 is provided on the lower cover 46. One end of the fifth circuit board 49 is aligned with the connecting hole 461, enabling the fifth circuit board 49 to be electrically connected to the charging module 3 through the connecting hole 461, thereby connecting the connecting wire 42 to the charging module 3.

[0121] When the telescopic cable module 4 is placed in the limiting space enclosed by the protective plate 52, the upper cover 45 and the lower cover 46 are in contact with the protective plate 52. The recessed part 41 can be provided on the upper cover 45 and the lower cover 46 so that the limiting protrusion 521 on the protective plate 52 can extend into the recessed part 41, thereby limiting the position of the telescopic cable module 4.

[0122] As shown in Figure 9, in one possible embodiment, the retractable cable module 4 includes multiple third support posts 47. One end of each third support post 47 is connected to the lower cover 46, and the other end is connected to the bottom cover 12. The retractable cable module 4 is mounted on the bottom cover 12 via the third support posts 47. The third support posts 47 also limit the distance between the retractable cable module 4 and the bottom cover 12, reducing the possibility of interference between the retractable cable module 4 and the pins 34 on the bottom cover 12. An insulating element can be provided between the pins 34 and the retractable cable module 4 to increase the creepage distance between the pins 34 and the conductive contacts in the retractable cable module 4, reducing creepage or arcing phenomena and improving safety during charging.

[0123] [Second Embodiment]

[0124] As shown in Figures 1, 2, and 15, the second embodiment of this application provides a charging device, which differs from the first embodiment mainly in the structure of the outer shell 1 and the charging module 3. Specifically, the outer shell 1 of this embodiment includes a receiving cavity 110 and a first mounting portion 111, the first mounting portion 111 being a through-hole structure. The outer surface of the outer shell 1 includes a bottom surface and a charging surface, the bottom surface being located at the bottom of the outer shell 1 and the charging surface being located at the top of the outer shell 1, with the charging surface and the bottom surface spaced apart. When charging through the charging device, the electronic device is placed on the charging surface, and the signal transmitting surface of the coil module 2 is arranged towards the charging surface, so that the coil module 2 can transmit wireless charging signals towards the charging surface. The charging surface is inclined relative to the bottom surface.

[0125] During the charging process of the charging device for the electronic device, the bottom surface of the outer casing 1 is parallel or perpendicular to the horizontal plane. The electronic device is placed on the charging surface, which is tilted so that it is tilted relative to the horizontal plane. After the electronic device is placed on the charging surface, the side of the electronic device without a screen contacts the charging surface, while the side with a screen can be tilted towards the user, making it convenient for the user to view the screen of the electronic device during the charging process.

[0126] In the projection perpendicular to the bottom surface, the projection range of the charging surface is within the projection range of the bottom surface, making the area of ​​the bottom surface larger than the area of ​​the charging surface. When the electronic device is placed on the charging surface, the possibility of the electronic device slipping can be reduced.

[0127] Along a direction parallel to the bottom surface, the outer casing 1 includes two opposing sides, one of which has a charging surface on its surface. The end of the charging surface away from the bottom surface is close to the other side surface, so that there is an angle between the charging surface and the plane containing the bottom surface.

[0128] In one possible embodiment, the angle between the plane containing the charging surface and the plane containing the bottom surface of the housing 1 is 30° to 60°. Taking the bottom surface of the charging device being parallel to the horizontal plane during charging as an example, with an angle of 30° to 60° between the charging surface and the horizontal plane, the side of the electronic device with the screen can tilt towards the user after the electronic device is placed on the charging surface, making it easier for the user to view the screen of the electronic device during charging. When the angle between the charging surface and the horizontal plane is greater than or equal to 30°, the angle between the user's line of sight and the screen of the electronic device is close to 90°, making it easier for the user to view the content on the screen of the electronic device. If the angle between the charging surface and the horizontal plane is less than 30°, the angle between the user's line of sight and the screen of the electronic device is small, and the electronic device is easily affected by ambient light, which can easily lead to reflections or glare, resulting in a poor viewing experience. An angle between the charging surface and the horizontal plane of less than or equal to 60° can increase the friction between the electronic device and the charging surface, reducing the possibility of the electronic device slipping. Therefore, the angle between the plane where the charging surface is located and the plane where the outer casing 1 is located can be 30°, 45°, 60°, etc., which makes it easier for users to view the screen of electronic devices and can also reduce the possibility of electronic devices slipping off the charging device.

[0129] In one possible embodiment, the angle between the plane containing the charging surface and the plane containing the bottom surface of the outer casing 1 is preferably 45°. During charging, the charging device has two states: vertical and horizontal. When the charging device is in the vertical state, the bottom surface of the outer casing 1 is parallel to the horizontal plane; when the charging device is in the horizontal state, the bottom surface of the outer casing 1 is perpendicular to the horizontal plane. The angle between the plane containing the charging surface and the plane containing the bottom surface of the outer casing 1 is 45°, ensuring that the angle between the charging surface and the horizontal plane is 45° in both vertical and horizontal states. This facilitates viewing the screen of the electronic device and reduces the possibility of the electronic device slipping. Even with a deviation of ±5° from the aforementioned 45° angle, a similar technical effect can be achieved; that is, the angle between the plane containing the charging surface and the plane containing the bottom surface of the outer casing 1 can be between 40° and 50°.

[0130] As shown in Figures 2 and 15, in one possible embodiment, the housing 1 includes a shell 11 and a bottom cover 12, with the bottom surface located on the bottom cover 12. The coil module 2 is mounted on the end of the shell 11, and the bottom cover 12 is mounted on the side of the shell 11 away from the charging surface. The charging device includes a plug 34, which is mounted on the side wall of the shell 11 or the bottom cover 12. When the plug 34 is mounted on the side wall of the shell 11, the side wall with the plug 34 is opposite to the coil module 2. When the plug 34 is plugged into the socket, the side of the shell 1 with the charging surface is located away from the plane where the socket is located, facilitating the placement of the electronic device on the charging surface of the shell 1.

[0131] In one possible embodiment, the angle between the plane where the charging surface is located and the insertion direction of the pin 34 is 30° to 60°, so that after the pin 34 of the charging device is inserted into the socket, the angle between the charging surface and the horizontal plane is 30° to 60°, which makes it easier for the user to view the screen of the electronic device and also reduces the possibility of the electronic device slipping off the charging device.

[0132] As shown in Figures 2 and 15, in one possible embodiment, the receiving cavity 110 communicates with the first mounting portion 111 of the through-hole structure, so that at least a portion of the coil module 2 is located within the first mounting portion 111. The coil module 2 is mounted on the end of the housing 11 away from the bottom cover 12. Along the direction away from the bottom cover 12, the cross-sectional area of ​​the outer contour of the housing 11 gradually decreases, which can reduce the structure around the charging surface, thereby reducing the possibility of interference between the housing 11 and the electronic device and improving the stability during charging. Taking a smartwatch as an example, when the main body of the smartwatch is placed on the charging surface for wireless charging, the watch strap connected to the main body of the smartwatch will rest on the outer surface of the housing 11. Since the cross-sectional area of ​​the outer contour of the charging surface gradually decreases, forming a shape that is smaller at the top and larger at the bottom, the watch strap will not be interfered with by the structure around the charging surface and will not arch up, thereby avoiding the problem of reduced charging efficiency caused by the main body of the smartwatch being far away from the charging surface.

[0133] As shown in Figure 2, the coil module 2 and the charging module 3 are spaced apart inside the housing 11, forming a heat-equalizing space between them. This reduces the possibility of heat generated by the charging module 3 being conducted to the coil module 2, lowers the temperature of the electronic device during charging, and thus improves the charging efficiency of the charging device for the electronic device.

[0134] The end of the housing 11 away from the bottom cover 12 is arc-shaped, which expands the heat dissipation space on one side of the coil module 2 along the direction parallel to the bottom cover 12, further reducing the possibility of heat generated by the charging module 3 being conducted to the coil module 2.

[0135] As shown in Figures 2 and 16, in one possible embodiment, the housing 11 of the outer casing 1 includes a first housing portion 114 and a second housing portion 115. The second housing portion 115 is connected to the bottom cover 12, and the charging surface is located at the end of the first housing portion 114 away from the second housing portion 115. The second housing portion 115 is a hollow columnar structure, wherein the cross-sectional area of ​​the end near the bottom cover 12 is the same as the cross-sectional area of ​​the end near the first housing portion 114. The first housing portion 114 is a hollow conical structure, and the cross-sectional area of ​​the first housing portion 114 gradually decreases along the direction away from the second housing portion 115.

[0136] The charging module 3 is located inside the second housing 115, which has a columnar structure, increasing the internal space to improve the installation space for the charging module 3. The first housing 114 is provided with a first mounting part 111, allowing the charging surface to be located within the first housing 114. The cross-sectional area of ​​the first housing 114 gradually decreases, causing the sidewalls of the first housing 114 to be inclined, facilitating the inclined installation of the coil module 2.

[0137] When the charging device charges an electronic device, the prong 34 needs to be inserted into the socket hole. Existing sockets may have multiple sets of sockets to connect multiple electrical appliances. Along the direction parallel to the bottom cover 12, the cross-section of the outer contour of the second housing 115 is rectangular, which can reduce the space occupied by the charging device on the socket and facilitate plugging it into the same socket as other electrical appliances. In one possible embodiment, the second housing 115 has a rounded chamfer to improve the appearance of the charging device.

[0138] As shown in Figure 2, in one possible embodiment, the charging module 3 includes a first circuit board 31 and a plurality of electronic devices 32. The first circuit board 31 is connected to the inner wall of the receiving cavity 110, and the plurality of electronic devices 32 are mounted on the first circuit board 31 and interconnected through the first circuit board 31.

[0139] The sidewall of the receiving cavity 110 is provided with a plurality of protrusions 113, which are spaced apart circumferentially within the receiving cavity 110. After the charging device is installed in the receiving cavity 110, the plurality of protrusions 113 abut against the sidewall of the first circuit board 31, thereby pressurizing the first circuit board 31 within the receiving cavity 110. Preferably, the protrusions 113 extend along the height direction of the charging device on the inner wall of the receiving cavity 110. Along the circumference of the charging device, the plurality of protrusions 113 can be arranged axially or centrally symmetrically, making the first circuit board 31 more stable after being installed in the receiving cavity 110.

[0140] In one possible embodiment, the receiving cavity 110 has a plurality of fixing posts, which clamp the first circuit board 31 along the thickness direction of the first circuit board 31 so that the first circuit board 31 is fixed in the receiving cavity.

[0141] As shown in Figure 2, in one possible embodiment, the first circuit board 31 is arranged parallel to the bottom surface of the housing 1, and multiple electronic devices 32 are respectively mounted on both sides of the first circuit board 31. The first circuit board 31 is fixed in the receiving cavity 110 by an interference fit with the protrusion 113, the protrusion 113 protruding from the side wall of the receiving cavity 110, and the parallelism between the first circuit board 31 and the bottom wall of the housing 1 facilitates the installation of the first circuit board 31.

[0142] The charging surface is inclined along the first direction Y, so that the distance between the charging surface and the bottom surface of the outer casing 1 gradually increases. The first direction Y is the length direction Y in the first embodiment. As shown in Figure 2, in one possible embodiment, the height of the plurality of electronic devices 32 spaced apart along the first direction Y gradually increases.

[0143] During the charging process, the electronic device 32 generates heat. Along the first direction Y, the height of the multiple electronic devices 32 gradually increases, which can increase the distance between each position of the charging surface in the coil module 2 and the electronic device 32, thereby reducing the possibility of the heat generated by the electronic device 32 being conducted to the charging surface. The charging surface in the coil module 2 is in contact with the electronic device, which can further reduce the possibility of the heat generated by the electronic device 32 being conducted to the electronic device, thus improving the charging efficiency of the electronic device.

[0144] As shown in Figure 17, in one possible embodiment, the first circuit board 31 is arranged parallel to the charging surface, and multiple electronic devices 32 are respectively mounted on both sides of the first circuit board 31. The parallel arrangement of the first circuit board 31 with the coil module 2 increases the spacing between the electronic devices 32 and the coil module 2. Electronic devices 32 that generate a lot of heat (such as transformer 321, high-voltage electrolytic capacitor 322, etc.) are positioned on the first circuit board 31 away from the charging surface, which reduces the possibility of heat generated by the electronic devices 32 being conducted to the charging surface. This helps to reduce the temperature of the charging surface and the electronic devices, thereby improving the charging efficiency of the charging device.

[0145] As shown in Figures 2, 15, and 16, in one possible embodiment, the housing 1 includes a connecting surface located on the outer surfaces of the first housing portion 114 and the second housing portion 115. The connecting surface is connected to the bottom surface and extends upward, such that the charging surface is connected to the connecting surface. The charging device includes a connector 33, such as a female connector, which is mounted on the housing 1 and electrically connected to the charging module 3.

[0146] In one possible embodiment, the connector 33 and the charging surface are located on the same side of the housing 1. The charging surface is angled, so the connector 33 can be disposed on the side wall of the housing 1 where the first mounting portion 111 is located, making the connector 33 and the charging surface the same side of the housing 1. When the charging device charges the electronic device, the side of the housing 1 with the charging surface needs to face the user; this side is the front side of the charging device, facilitating the user's viewing of the electronic device's contents. The connector 33 being on the same side of the charging device, also facing the user, allows the user to easily connect a data cable via the connector 33.

[0147] As shown in Figures 15 and 17, in one possible embodiment, the outer casing 1 includes a cover plate 21 disposed within the first mounting portion 111, and the sidewall of the cover plate 21 is connected to the sidewall of the first mounting portion 111. The charging surface is located on the cover plate 21, specifically on the side of the cover plate 21 away from the receiving cavity 110, and the coil module 2 is located on the side of the cover plate 21 opposite to the charging surface. The coil module 2 is the same as or similar to that in the first embodiment, and will not be described again here.

[0148] When the charging device charges the electronic device, current flows through the coil 24, wirelessly charging the electronic device through electromagnetic induction. The first magnetic component 22 and the coil 24 are respectively placed in the first receiving groove 231 and the second receiving groove 232 of the magnetic shielding component 23. This reduces the possibility of the first magnetic component 22 disturbing the magnetic field generated by the coil 24, thus improving the stability of the charging process. The side of the electronic device without a screen has a metal material such as iron, nickel, or cobalt that can be attracted by a magnet. The first magnetic component 22 can attract the electronic device, allowing it to be placed on the charging surface via the coil module 2, reducing the possibility of the electronic device slipping. The cover plate 21 covers the first receiving groove 231 and the second receiving groove 232 in the magnetic shielding component 23, separating the electronic device from the first magnetic component 22 and the coil 24. This reduces the possibility of the electronic device damaging the first magnetic component 22 and the coil 24, and also reduces the possibility of the magnetic shielding component 23 scratching the electronic device.

[0149] The side of the cover plate 21 away from the magnetic shield 23 (i.e., the charging surface) can be provided with a groove or other structure according to the shape of the electronic device to increase the contact area between the electronic device and the charging surface, making the electronic device fit more tightly with the charging surface and reducing the possibility of the electronic device slipping. The charging surface can also be provided with a pattern or anti-slip coating or other structure to increase the surface friction of the charging surface, so as to reduce the possibility of the electronic device slipping.

[0150] The coil module 2 also includes a second circuit board 25, the coil 24 is electrically connected to the second circuit board 25, and the second circuit board 25 is electrically connected to the charging module 3, so that the charging module 3 can supply power to the coil 24 through the second circuit board 25.

[0151] In one possible embodiment, the second circuit board 25 is mounted on the side of the magnetic shielding member 23 where the coil 24 and the first magnetic member 22 are not located. The fact that both the second circuit board 25 and the coil 24 are mounted on the magnetic shielding member 23 facilitates electrical connection between the coil 24 and the second circuit board 25, and also reduces the difficulty of installing the second circuit board 25.

[0152] As shown in Figure 18, in one possible embodiment, the second circuit board 25 is mounted on the charging module 3. During the charging process of the charging device for the electronic device, the second circuit board 25 generates heat. The mounting of the second circuit board 25 on the first circuit board 31 in the charging module 3 can increase the distance between the second circuit board 25 and the cover plate 21, which can reduce the possibility of the heat generated by the second circuit board 25 being conducted to the electronic device, thereby improving the charging efficiency of the charging device for the electronic device.

[0153] As shown in Figure 15, in one possible embodiment, the magnetic shielding member 23 has a heat-spreading member 7 on the side opposite to the coil 24 and the first magnetic member 22, and the heat-spreading member 7 is thermally connected to the magnetic shielding member 23. In the projection along the axial direction of the coil module 2 (i.e., the direction perpendicular to the plane where the charging surface is located), the projections of the coil 24 and the first magnetic member 22 are both located within the projection range of the heat-spreading member 7.

[0154] When the charging device charges the electronic device, current flows through the coil 24, charging the electronic device through electromagnetic induction. During charging, heat is generated in the coil 24, causing the temperature at the location of the coil 24 in the coil module 2 to rise. This heat is conducted to the electronic device through the cover plate 21. When the temperature reaches a threshold set by the electronic device, the charging power of the charging device decreases, resulting in a longer charging time. A heat spreader 7 is provided on the side of the first magnetic component 22 and the coil 24 near the charging module 3, allowing the heat generated by the coil 24 to be conducted to the heat spreader 7. The projections of the coil 24 and the first magnetic component 22 are both within the projection range of the heat spreader 7, enabling heat conduction between the coil 24, the first magnetic component 22, and the heat spreader 7. The heat spreader 7 absorbs the heat generated by the coil 24 and then conducts it to the first magnetic component 22 and the outer casing 1, reducing the concentration of heat generated by the coil module 2 at the location of the coil 24, which could lead to higher local temperatures within the coil module 2 and potentially lower charging efficiency for the electronic device.

[0155] The heat-spreading element 7 is disposed on the side of the magnetic shielding element 23 away from the coil 24 and the first magnetic element 22. It can reduce the possibility of heat generated by the coil 24 being conducted to the electronic device through the heat-spreading element 7, which is beneficial to reducing the temperature of the electronic device during charging and improving charging efficiency.

[0156] In one possible embodiment, the charging device includes a heat sink mounted on the housing 1 and arranged around the charging surface. When the housing 1 has a first mounting portion 111 and a cover plate 21, the heat sink is arranged around the first mounting portion 111 or the cover plate 21. The heat sink has a mesh structure with multiple mesh holes, allowing the receiving cavity 110 to communicate with the external environment. This facilitates the conduction of heat from the receiving cavity 110 to the external environment through the heat sink, thereby reducing the temperature inside the receiving cavity 110 and the temperature of the coil module 2, which is beneficial for improving the charging power.

[0157] In one possible embodiment, a breathable and waterproof membrane is provided on the heat sink, the breathable and waterproof membrane being located on the side of the heat sink facing or away from the receiving cavity 110, and completely covering the mesh in the heat sink.

[0158] Breathable and waterproof membranes can be selected from pure e-PTFE breathable and waterproof membranes, breathable and waterproof composite membranes, oleophobic and breathable and waterproof membranes, ePTFE water pressure resistant breathable membranes (ES687), PTFE breathable and waterproof membranes (CNF-PMTY0230), and PEBAX breathable and waterproof films (MH1657, MV1074, MV3000), etc., to ensure the waterproof performance of the charging device.

[0159] In one possible embodiment, the breathable and waterproof membrane has opposing front and back sides, the front side being able to block liquid from passing through while the back side is breathable. When the breathable and waterproof membrane covers the mesh in the heat sink, the front side of the breathable and waterproof membrane faces the outside of the charging device to prevent external liquid from entering the receiving cavity 110.

[0160] The heat sink has mesh holes that communicate with the housing cavity 110, which can affect the waterproof performance of the charging device. Water entering the housing cavity 110 can cause the charging module 3 to short circuit. By setting a breathable and waterproof membrane on the heat sink, the heat inside the housing cavity 110 can be carried away by air circulation, and the waterproof performance of the charging device can be improved, reducing the possibility of water entering the housing cavity 110.

[0161] [Third Embodiment]

[0162] As shown in Figures 19 and 20, the third embodiment of this application provides a charging device. The main difference from the first embodiment lies in the presence of a heat-insulating structure within the outer casing 1 and a mounting structure for the coil module 2 on the outer casing 1. Specifically, the charging device of this embodiment includes an outer casing 1, a coil module 2, and a charging module 3. The outer casing 1 has a receiving cavity 110 and a first mounting portion 111, which is, for example, a groove structure. The outer casing 1 also includes a heat-insulating module 6, located between the receiving cavity 110 and the first mounting portion 111. The coil module 2 is mounted on the first mounting portion 111, and the charging module 3 is mounted within the receiving cavity 110. The specific structures or functions of the coil module 2 and the charging module 3 are the same as or similar to those of the first or second embodiment, and will not be described again here.

[0163] As shown in Figure 20, the outer casing 1 includes a housing 11 and a bottom cover 12. The coil module 2 is mounted on the housing 11, and the bottom cover 12 is located on the side of the housing 11 away from the coil module 2. The coil module 2 is inclined, and the angle between the plane where the coil module 2 is located and the plane where the bottom cover 12 is located is less than or equal to 45°.

[0164] As shown in Figures 20 and 21, the housing 1 also includes a spacer 112 located between the heat insulation module 6 and the coil module 2. The spacer 112 is, for example, an insulating member. The spacer 112 and the heat insulation module 6 can reduce the possibility of heat generated by the charging module 3 being conducted to the coil module 2, so that the temperature of the coil module 2 and the electronic device is less affected by the temperature of the charging module 3, which can improve the charging power of the charging device for the electronic device and help shorten the charging time of the electronic device. The coil module 2 is electrically connected to the charging module 3. Through-hole structures can be provided on both the spacer 112 and the heat insulation module 6. Specifically, the spacer 112 has a first through-hole 1111, and the heat insulation module 6 has a second through-hole 63. Wires are installed in the first through-hole 1111 and the second through-hole 63, allowing the coil module 2 and the charging module 3 to be connected via wires. Alternatively, spring-loaded pin structures can be provided on both the spacer 112 and the heat insulation module 6, allowing the coil module 2 and the charging module 3 to be electrically connected via spring-loaded pins. The coil module 2 and the charging module 3 can also be electrically connected in other ways, with corresponding connection structures provided on the spacer 112 and the heat insulation module 6; this is not limited here.

[0165] As shown in Figures 20, 21, and 22, in one possible embodiment, the heat insulation module 6 includes an inclined portion 64, a first straight portion 65, and a second straight portion 66. The inclined portion 64 is parallel to and fits against the coil module 2. The first straight portion 65 and the second straight portion 66 are located on both sides of the inclined portion 64, and both the first straight portion 65 and the second straight portion 66 extend along the length direction Y of the charging device and are installed on the inner wall of the housing 1, so that the heat insulation module 6 is installed in the receiving cavity 110 through the first straight portion 65 and the second straight portion 66.

[0166] The inner wall of the outer casing 1 is provided with a protrusion 113. The first straight portion 65 and the second straight portion 66 in the heat insulation module 6 can be interference-fitted with the protrusion 113 to fix it in the receiving cavity 110. The protrusion 113 protrudes from the inner wall of the receiving cavity 110, and the first straight portion 65 and the second straight portion 66 are perpendicular to the protrusion 113, making the heat insulation module 6 more stable in the receiving cavity 110. The first straight portion 65 and the second straight portion 66 can also be connected to the inner wall of the receiving cavity 110 in other ways. The inclined portion 64 has the same inclination angle as the spacer portion 112 and fits against the spacer portion 112, which can improve the space utilization in the receiving cavity 110 and reduce the possibility of interference between the heat insulation module 6 and the charging module 3.

[0167] A heat insulation cavity is provided between the first straight portion 65 and the spacer portion 112, which can increase the distance between the heat insulation module 6 and the coil module 2, reduce the possibility of heat in the heat insulation module 6 being conducted to the coil module 2, which is beneficial to reducing the temperature of the coil module 2 during the charging process and improving the charging efficiency of the electronic device.

[0168] As shown in Figures 20 and 21, in one possible embodiment, the charging device includes a mounting member 8, in which a coil module 2 is mounted. The mounting member 8 is mounted within a first mounting portion 111. The mounting member 8 includes a second mounting portion 81, the inner wall of which is provided with positioning protrusions and snap-fit ​​components. The coil module 2 is correspondingly provided with positioning grooves and snap-fit ​​components, allowing the coil module 2 to be fixed within the second mounting portion 81. The coil module 2 and the mounting member 8 can also be fixedly connected by means of adhesive bonding, etc., which is not limited here. The outer surface of the second mounting portion 81 and the inner wall of the first mounting portion 111 are provided with corresponding snap-fit ​​structures, allowing the mounting member 8 to be fixedly mounted within the first mounting portion 111. The mounting member 8 and the first mounting portion 111 can also be fixedly connected by means of adhesive bonding, etc., which is not limited here.

[0169] The first mounting part 111 is provided with a mounting member 8. The inner wall of the mounting member 8 can separate the coil module 2 and the spacer 112, which can improve the heat insulation effect between the coil module 2 and the receiving cavity 110, so as to reduce the temperature of the coil module 2 during charging.

[0170] The end of the mounting part 8 protrudes from the first mounting part 111, and a glossy coating may be provided at the end. The coil module 2 is located in the area surrounded by the glossy coating, making the position of the coil module 2 more obvious and easy to identify, and also making the charging device more aesthetically pleasing.

[0171] As shown in Figures 4, 20, and 21, in one possible embodiment, the inner wall of the receiving cavity 110 is provided with a plurality of protrusions 113, which are spaced apart circumferentially along the receiving cavity 110. The charging module 3 includes a first circuit board 31 and a plurality of electronic devices 32, which are mounted on the first circuit board 31. The plurality of protrusions 113 all abut against the sidewall of the first circuit board 31.

[0172] The coil module 2 is tilted along the length Y of the charging device. The distance between the two ends of the coil module 2 and the first circuit board 31 is different. The first circuit board 31 is provided with multiple electronic devices 32. During the charging process, the electronic devices 32 will generate heat. By concentrating the electronic devices 32 on the side of the first circuit board 31 that is farther away from the coil module 2, the distance between the electronic devices 32 and the coil module 2 can be increased. This can reduce the possibility of the heat generated by the electronic devices 32 being conducted to the coil module 2, which is beneficial to reducing the temperature of the coil module 2 during the charging process and improving the charging efficiency of the electronic device.

[0173] As shown in Figure 20, in one possible embodiment, the bottom cover 12 is provided with a pin 34 on the side away from the receiving cavity 110. The specific structure or function of the pin 34 is the same as or similar to that of the first embodiment, and will not be described again here.

[0174] As shown in Figures 20 and 21, in one possible embodiment, an insulating member 35 is provided between the pin 34 and the charging module 3. Due to the limited space within the receiving cavity 110, the distance between the first circuit board 31 in the charging module 3 and the pin 34 is small. Providing an insulating member 35 between the pin 34 and the charging module 3 can increase the creepage distance between the pin 34 and the conductive contacts in the charging module 3, avoiding creepage or arcing, and improving safety during the charging process.

[0175] In one possible embodiment, thermally conductive adhesive is provided between the insulating member 35 and the charging module 3 to facilitate the conduction of heat generated by the charging module to the insulating member 35. Thermally conductive adhesive is also provided between the insulating member 35 and the pin 34 to facilitate the conduction of heat in the insulating member 35 to the pin 34, and then to the charging device, thereby reducing the temperature inside the receiving cavity 110.

[0176] As shown in Figures 20, 21, and 23, in one possible embodiment, the heat insulation module 6 includes a support plate 61. A protrusion 113 is also provided on the inner wall of the cavity 110 corresponding to the heat insulation module 6. The side wall of the support plate 61 abuts against the protrusion 113, causing an interference fit between the support plate 61 and the protrusion 113, thus fixing the support plate 61 within the cavity 110. The support plate 61 is positioned between the coil module 2 and the charging module 3, reducing the heat generated by the charging module 3 from being conducted to the coil module 2, thereby lowering the temperature of the coil module 2 and improving the charging efficiency of the electronic device.

[0177] As shown in Figure 21, in one possible embodiment, a heat insulation member 62 is provided on the side of the support plate 61 near the spacer 112 and / or on the side away from the spacer 112. The heat insulation member 62 can be fixed in the receiving cavity 110 by the protrusion 113, or it can be glued to the support plate 61 and fixed in the receiving cavity 110 by the support plate 61.

[0178] The heat insulation component 62 is stacked with the support plate 61, which reduces the thermal conductivity of the heat insulation module 6, thereby reducing the possibility of heat generated by the charging module 3 being conducted to the coil module 2. The heat insulation component 62 is located on the side of the support plate 61 near the spacer 112, increasing the accommodating space on one side of the charging module 3 and facilitating its installation. The heat insulation component 62 is located on the side of the support plate 61 away from the spacer 112, increasing the distance between the heat insulation module 6 and the spacer 112, reducing the possibility of heat being conducted from the heat insulation module 6 to the spacer 112, which helps reduce the possibility of the coil module 2 overheating during charging and improves the charging efficiency of the electronic device. The presence of heat insulation components 62 on both sides of the support plate 61, near and away from the spacer 112, enhances the heat insulation effect of the heat insulation module 6, reduces the possibility of heat generated by the charging module 3 being conducted to the coil module 2, and helps reduce the possibility of the coil module 2 overheating during charging, thus improving the charging efficiency of the electronic device.

[0179] As shown in Figures 21, 23, and 24, in one possible embodiment, the heat insulation component 62 includes a heat-spreading layer 621 and a heat insulation layer 622. The heat insulation layer 622 can be heat-insulating cotton with a thermal conductivity of 0.014-0.016 W / m·K. The low thermal conductivity of the heat-insulating cotton reduces the heat generated by the charging module 3 from being conducted to the coil module 2. The heat-spreading layer 621 has a high thermal conductivity, allowing the heat conducted to the heat insulation component 62 to be evenly conducted to the inner wall of the receiving cavity 110, and then discharged through the housing 11 to the charging device, thereby reducing the temperature of the heat insulation component 62 and improving its heat insulation effect.

[0180] As shown in Figure 23, in one possible embodiment, the heat insulation layer 622 is disposed on the side of the heat spreader layer 621 away from the support plate 61. The heat spreader layer 621 is in contact with the support plate 61, which facilitates the conduction of heat in the heat insulation component 62 to the support plate 61, so that the heat in the heat insulation component 62 can be conducted out of the charging device through the support plate 61 and the housing 11, thereby reducing the temperature of the heat insulation component 62.

[0181] As shown in Figure 24, in one possible embodiment, heat insulation layers 622 are provided on both sides of the heat spreader 621 in the thickness direction. The presence of heat insulation layers 622 on both sides of the heat spreader 621 can improve the heat insulation effect of the heat insulation component 62, thereby reducing the possibility of electrical energy generated by the charging module 3 being conducted to the coil module 2, which is beneficial to reducing the temperature of the coil module 2 during the charging process and improving the charging efficiency.

[0182] In one possible embodiment, the heat spreader 621 is bonded and fixed to the support plate 61 or the insulation layer 622 to reduce the possibility of separation of the heat spreader 621, the support plate 61 and the insulation layer 622, thereby improving the reliability of the insulation module 6.

[0183] In one possible embodiment, the heat spreader 621 is made of copper, and its thickness is between 0.5 mm and 3 mm. The heat spreader 621 is used to conduct heat from the insulation component 62 to the housing 11. Copper has a high thermal conductivity, and the thickness of the heat spreader 621 is greater than 0.5 mm, enabling rapid heat transfer from the insulation component 62 to the housing 11. A thickness of less than 3 mm reduces the thickness of the insulation component 62, thereby reducing the space occupied by the insulation module 6 within the receiving cavity 110, which is beneficial for improving the space utilization within the receiving cavity 110.

[0184] As shown in Figure 25, in one possible embodiment, the heat spreader 621 includes a first heat spreader 621a and a second heat spreader 621b, which are bonded together. The first heat spreader 621a is made of copper, and the second heat spreader 621b is made of graphene. The second heat spreader 621b, being made of graphene, has good thermal conductivity. By bonding the second heat spreader 621b to the first heat spreader 621a, the graphene and copper can quickly conduct heat from the insulation component 62 to the housing 11. The bonding of graphene and copper to form the heat spreader 621 provides good thermal conductivity while reducing the amount of copper used. Graphene has a lower cost, thus reducing the production cost of the heat spreader 621.

[0185] In one possible embodiment, the heat insulation component 62 can be a heat insulation sheet or a heat insulation coating. The heat insulation sheet is fixed to the support plate 61 by means of adhesive or other methods, and the heat insulation coating can be applied to the support plate 61 to improve the heat insulation effect of the heat insulation module, reduce the possibility of heat conduction from the charging module 3 to the coil module 2, reduce the temperature of the coil module 2 and the electronic device, and thus improve the charging efficiency.

[0186] As shown in Figures 26 and 27, in one possible embodiment, the charging device includes at least one heat sink 36. Along the height direction Z of the charging device, the heat sink 36 is located on the side of the heat insulation module 6 away from the spacer 112 and is disposed around the charging module 3. The spacer 112 is located between the first circuit board 31 of the charging module 3 and the inner wall of the receiving cavity 110, and contacts the inner wall of the receiving cavity 110. A protrusion 113 is provided on the inner wall of the receiving cavity 110, and the plurality of heat sinks 36 are spaced apart to avoid the protrusion 113.

[0187] The heat sink 36 has a high thermal conductivity. It is arranged around the charging module 3 and contacts the inner wall of the receiving cavity 110. It can conduct the heat generated by the charging module 3 to the inner wall of the receiving cavity 110 and conduct it out of the charging device through the housing 11. This helps to reduce the temperature inside the receiving cavity 110, thereby reducing the temperature of the coil module 2 during the charging process and improving the charging efficiency of the electronic device.

[0188] In one possible embodiment, the heat sink 36 includes an insulating layer and a heat transfer layer, with the heat transfer layer located on the side of the insulating layer away from the charging module 3. The heat transfer layer can be made of materials with high thermal conductivity, such as copper, graphene, or polymer materials, facilitating the conduction of heat generated by the charging module 3 to the inner wall of the receiving cavity 110, thereby improving the heat dissipation efficiency of the charging device. The heat transfer layer may be conductive. An insulating layer is provided on the side of the heat transfer layer closest to the charging module 3 to separate the heat transfer layer from the charging module 3. This reduces the possibility of a short circuit in the charging module 3 and also reduces the possibility of the charging module 3 and the housing 11 becoming electrified due to the connection between the heat transfer layer and the housing 11, thus improving the safety of the charging device.

[0189] This application relates to a charging device, including a housing 1, a coil module 2, and a charging module 3. The housing 1 has a receiving cavity 110 and a first mounting portion 111. The housing 1 also includes a heat insulation module 6, which is located between the receiving cavity 110 and the first mounting portion 111. The coil module 2 is mounted on the first mounting portion 111, and the charging module 3 is mounted inside the receiving cavity 110. The coil module 2 and the charging module 3 are electrically connected, so that the charging module 3 supplies power to the coil module 2, generating current in the coil module 2. When electronic devices such as smartwatches come into contact with the coil module 2, the charging device can wirelessly charge the electronic devices through electromagnetic induction. The heat insulation module includes a support plate 61 and a heat insulation component 62. The heat insulation component 62 is located on the side of the support plate 61 closer to the coil module 2 and / or on the side farther away from the coil module 2. This reduces the possibility of heat generated by the charging module 3 being conducted to the coil module 2, making the temperature of the coil module 2 and the electronic device less affected by the temperature of the charging module 3. This can improve the charging power of the charging device for the electronic device and help shorten the charging time of the electronic device.

[0190] [Fourth Embodiment]

[0191] As shown in Figures 19 and 20, the fourth embodiment of this application provides a charging device. The main difference from the first embodiment lies in the specific structure of the coil module 2 and the installation structure of the coil module 2 on the outer casing 1. Specifically, the charging device of this embodiment includes an outer casing 1, a coil module 2, and a charging module 3. The outer casing 1 has a receiving cavity 110 and a first mounting portion 111, which is, for example, a groove. The outer casing 1 also includes a spacer portion 112 located between the receiving cavity 110 and the first mounting portion 111. The spacer portion 112 is, for example, a heat insulation component. The coil module 2 is mounted on the first mounting portion 111, and the charging device is mounted in the receiving cavity 110 and electrically connected to the coil module 2. The coil module 2 is electrically connected to the charging module 3. The specific structure or function of the charging module 3 is the same as or similar to that of the first embodiment, and will not be described again here.

[0192] As shown in Figures 3 and 30, the coil module 2 includes a first magnetic element 22 and a coil 24, wherein the coil 24 is disposed around the first magnetic element 22 and is electrically connected to the charging module 3. The coil module 2 also includes a heat spreader 7, which is located on the side of the first magnetic element 22 and the coil 24 closer to the charging module 3. In the projection along the axial direction of the coil module 2, the projections of the coil 24 and the first magnetic element 22 are both within the projection range of the heat spreader 7.

[0193] When the charging device charges the electronic device, current flows through the coil 24, charging the electronic device through electromagnetic induction. During charging, heat is generated in the coil 24, causing the temperature at the location of the coil 24 in the coil module 2 to rise. When the temperature reaches a threshold set by the electronic device, the charging power of the charging device decreases, resulting in a longer charging time. A heat spreader 7 is provided on the side of the first magnetic component 22 and the coil 24 near the charging module 3, allowing the heat generated by the coil 24 to be conducted to the heat spreader 7. The projections of the coil 24 and the first magnetic component 22 are both within the projection range of the heat spreader 7, enabling heat conduction between the coil 24, the first magnetic component 22, and the heat spreader 7. The heat spreader 7 absorbs the heat generated by the coil 24 and then conducts it to the first magnetic component 22 and the outer casing 1, reducing the concentration of heat generated by the coil module 2 at the location of the coil 24, which could lead to a higher local temperature in the coil module 2 and potentially lower charging efficiency for the electronic device.

[0194] As shown in Figures 3 and 30, in one possible embodiment, the coil module 2 includes a magnetic shielding component 23, which includes a first receiving groove 231 and a second receiving groove 232. The second receiving groove 232 is arranged around the first receiving groove 231, the first magnetic component 22 is located in the first receiving groove 231, and the coil 24 is located in the second receiving groove 232.

[0195] As shown in Figure 30, the first receiving groove 231 and the second receiving groove 232 are located on the same side of the magnetic shielding member 23, and the heat dissipation member 7 is located on the side of the magnetic shielding member 23 where the first receiving groove 231 and the second receiving groove 232 are not provided, so that the coil 24 and the heat dissipation member 7 are located on both sides of the magnetic shielding member 23 respectively.

[0196] The coil module 2 also includes a cover plate 21, which is mounted on the housing 1. When the charging device charges the electronic device, the electronic device comes into contact with the cover plate 21. The cover plate 21 is located on the side of the magnetic shielding member 23 where the first receiving groove 231 and the second receiving groove 232 are provided, so as to shorten the distance between the coil 24 and the electronic device and make the charging process of the charging device more stable. The heat dissipation member 7 is provided on the side of the magnetic shielding member 23 where the first receiving groove 231 and the second receiving groove 232 are not provided. It can reduce the possibility of heat generated by the coil 24 being conducted to the electronic device through the heat dissipation member 7, which helps to reduce the temperature of the electronic device during charging and improves the charging efficiency.

[0197] In one possible embodiment, the coil module 2 includes thermally conductive adhesive located between the magnetic shielding component 23 and the heat spreader 7. The thermally conductive adhesive has a high thermal conductivity, facilitating the conduction of heat generated by the coil 24 through the magnetic shielding component 23 and the thermally conductive adhesive to the heat spreader 7. This reduces the likelihood of heat generated by the coil 24 being conducted to the electronic device through the cover plate 21, thus helping to lower the temperature of the electronic device during charging and improve charging efficiency.

[0198] As shown in Figures 28 and 29, in one possible embodiment, the heat spreader 7 includes an adapter plate 71, on which a first connecting portion 71a and a second connecting portion 71b are provided. The first connecting portion 71a includes at least two first connecting points, which can be solder joints. The leads of the coil 24 are soldered to the first connecting portion 71a, making the coil 24 electrically connected to the first connecting portion 71a. The at least two first connecting points are mutually insulated, which can reduce the possibility of a short circuit caused by contact of the leads of the coil 24. The second connecting portion 71b includes at least two second connecting points, which can be solder joints. The leads of the charging module 3 are soldered to the second connecting points of the second connecting portion 71b, making the charging module 3 electrically connected to the second connecting portion 71b. The at least two second connecting points are mutually insulated, which can reduce the possibility of a short circuit caused by contact of the leads of the charging module 3. The first connection point in the first connection part 71a and the second connection point in the second connection part 71b correspond one-to-one with each other through the printed circuit on the adapter plate 71, so that the coil 24 is electrically connected to the charging module 3, which can reduce the difficulty of electrical connection between the coil 24 and the charging module 3.

[0199] As shown in Figures 28 and 29, in one possible embodiment, the first connecting portion 71a and the second connecting portion 71b are located on the same side of the adapter plate 71, and both are located on the side of the adapter plate 71 facing the coil module 2. The charging module 3 is disposed in the receiving cavity 110, and the coil module 2 is mounted on the first mounting portion 111. By placing both the first connecting portion 71a and the second connecting portion 71b on the side of the adapter plate 71 facing the coil module 2, it is easier for the charging module 3 to be soldered to the second connecting portion 71b, which helps to improve the production efficiency of the charging device.

[0200] As shown in Figures 28 and 29, the adapter plate 71 includes a clearance portion 71c, which can be a through hole or a notch, enabling communication between the solder joint of the first mounting portion 111 and the receiving cavity 110. The leads of the coil module 2 or the charging module 3 can pass through the clearance portion. The clearance portion 71c on the adapter plate 71 allows the wires to pass through the adapter plate 71, facilitating the soldering of the charging module 3 to the second connection point in the second connection portion 71b.

[0201] In one possible embodiment, the first connecting portion 71a is located on the side of the adapter plate 71 facing the coil 24, and the second connecting portion 71b is located on the side of the adapter plate 71 away from the coil 24. The leads of the coil 24 are soldered to the solder joints in the first connecting portion 71a, which is located on the side of the adapter plate 71 facing the coil 24, facilitating electrical connection between the coil 24 and the first connecting portion 71a. The charging module 3 is located on the side of the adapter plate 71 away from the coil 24, and the leads of the charging module 3 are soldered to the solder joints in the second connecting portion 71b, which is located on the side of the adapter plate 71 away from the coil 24. The leads of the charging module 3 do not need to pass through the adapter plate 71, which reduces the possibility that the heat generated by the charging module 3 during operation can be conducted to the coil module 2 through the lead clearance portion, thus reducing the possibility of temperature rise in the coil module 2.

[0202] As shown in Figure 28, in one possible embodiment, in the projection along the axial direction of the coil module 2, the projections of the first magnetic component 22 and the coil 24 are both located within the projection range of the adapter plate 71, enabling the adapter plate 71 to balance the temperatures of the first magnetic component 22 and the coil 24. The adapter plate 71 has a high thermal conductivity, which can conduct the heat generated by the coil 24 to the first magnetic component 22, the outer casing 1, and other structures, thereby reducing the possibility of heat concentration in the coil module 2 leading to excessively high temperatures in the charging module 3.

[0203] As shown in Figure 29, in one possible embodiment, the heat spreader 7 includes a heat spreader section 72, the thermal conductivity of which is greater than that of the adapter plate 71, and the adapter plate 71 is disposed around the heat spreader section 72. In the projection along the axial direction of the coil module 2, the projections of the first magnetic element 22 and the coil 24 are both located within the projection range of the heat spreader section 72. The material of the heat spreader section 72 can be copper or other materials with high thermal conductivity, enabling the heat spreader 7 to absorb the heat generated by the coil 24 more quickly and to make the temperature more uniform at various locations in the coil module 2, reducing the possibility of excessively high local temperatures in the coil module 2 leading to reduced charging efficiency of the charging device for electronic devices. The adapter plate 71 can provide a first connecting portion 71a and a second connecting portion 71b for the heat spreader 7, allowing the coil module 2 and the charging module 3 to be electrically connected through the heat spreader 7. The adapter plate 71 is arranged around the heat dissipation section 72 so that the first magnetic component 22 and the coil 24 can exchange heat with the heat dissipation section 72 to balance the heat in the coil module 2.

[0204] As shown in Figure 30, in one possible embodiment, the charging device includes a mounting member 8, in which the coil module 2 is mounted. The mounting member 8 is mounted within a first mounting portion 111. The mounting member 8 includes a second mounting portion 81, which may be a groove structure. The inner wall of the second mounting portion 81 is provided with positioning protrusions and snap-fit ​​parts. The cover plate 21 is correspondingly provided with positioning grooves and snap-fit ​​parts, allowing the coil module 2 to be fixed within the second mounting portion 81 via the cover plate 21. The cover plate 21 and the mounting member 8 can also be fixedly connected by means of adhesive bonding, etc., which is not limited here. The outer surface of the second mounting portion 81 and the inner wall of the first mounting portion 111 are provided with corresponding snap-fit ​​structures, allowing the mounting member 8 to be fixedly mounted within the first mounting portion 111. The mounting member 8 and the first mounting portion 111 can also be fixedly connected by means of adhesive bonding, etc., which is not limited here.

[0205] A mounting component 8 is provided within the first mounting portion 111. The mounting component 8 may have a mounting component base plate 83. The mounting component base plate 83 can separate the coil module 2 and the spacer portion 112, thereby improving the heat insulation effect between the coil module 2 and the receiving cavity 110 and reducing the temperature of the coil module 2 during charging. The mounting component 8 may also be a ring structure, with no mounting component base plate 83 on the side near the spacer portion 112, facilitating electrical connection between the coil module 2 and the charging module 3. A mounting component through hole 831 is provided through the mounting component base plate 83. When located within the first mounting portion 111, the mounting component through hole 831 is aligned and connected with the first through hole 1111 to facilitate the passage of the wires of the coil module 2.

[0206] This application relates to a charging device, including a housing 1, a coil module 2, and a charging module 3. The housing 1 has a receiving cavity 110 and a first mounting portion 111. The housing 1 also includes a spacer portion 112 located between the receiving cavity 110 and the first mounting portion 111. The coil module 2 is mounted on the first mounting portion 111, and the charging device is mounted within the receiving cavity 110. The coil module 2 includes a first magnetic element 22 and a coil 24. The coil 24 is arranged around the first magnetic element 22 and is electrically connected to the charging module 3, causing a current to be generated in the coil 24. When an electronic device comes into contact with the coil module 2, it is wirelessly charged through electromagnetic induction. A heat spreader 7 is provided on the side of the first magnetic element 22 and the coil 24 near the charging module 3. In the projection along the axial direction of the coil module 2, the projection of the coil 24 and the projection of the first magnetic element 22 are both located within the projection range of the heat spreader 7. When current is passed through the coil 24, the temperature of the coil 24 will rise. The heat dissipation component 7 conducts the heat generated by the coil 24 to the first magnetic component 22 or the outer shell 1 and other structures, which reduces the possibility of heat concentration and high local temperature in the coil module 2, and is conducive to improving the charging efficiency of electronic devices.

[0207] [Fifth Embodiment]

[0208] As shown in Figures 2, 19, 20, and 30, the fifth embodiment of this application provides a charging device. The main difference from the first embodiment is that the outer casing 1 is provided with a mounting structure for the coil module 2. Specifically, the charging device of this embodiment includes an outer casing 1, a coil module 2, and a charging module 3. The outer casing 1 has a receiving cavity 110 and a first mounting portion 111. The first mounting portion 111 is, for example, a groove structure. The outer casing 1 also includes a spacer portion 112, for example, a heat insulation member. The spacer portion 112 is located between the receiving cavity 110 and the first mounting portion 111. The coil module 2 is mounted on the first mounting portion 111, and the charging module 3 is mounted in the receiving cavity 110 and electrically connected to the coil module 2. The spacer portion 112 is disposed between the coil module 2 and the charging module 3.

[0209] The outer casing 1 includes a housing 11 and a bottom cover 12. The coil module 2 is mounted on the housing 11. The bottom cover 12 is located at the end of the housing 11 away from the coil module 2. Along the direction away from the bottom cover 12, the cross-sectional area of ​​the housing 11 gradually decreases, and the cross-section of the end of the housing 11 away from the bottom cover 12 is arc-shaped, which reduces the size of the charging device and makes it more portable. For example, in electronic devices such as smartwatches, the charging position of a smartwatch is provided on both sides with structures such as a watch strap. The coil module 2 is located on the side of the housing 11 away from the bottom cover 12, and the cross-sectional area of ​​the housing 11 gradually decreases along the direction away from the bottom cover 12. This reduces the structure around the coil module 2, thereby reducing the possibility of interference between the housing 11 and the watch strap or other structures, and improving the stability during charging. The specific structure or function of the coil module 2 is the same as or similar to that of the first embodiment, and will not be described again here.

[0210] As shown in Figure 30, in one possible embodiment, the coil module 2 is mounted on the first mounting portion 111, and the surface of the coil module 2 protrudes from the receiving cavity 110, facilitating contact between the electronic device and the coil module 2, reducing the distance between the electronic device and the coil module 2, and thus improving charging efficiency. The spacer portion 112 is integrally formed with the outer shell 1, and the spacer portion 112 is inclined. The coil module 2 is mounted on the side of the spacer portion 112 away from the receiving cavity 110. The coil module 2 is fixed to the surface of the spacer portion 112, for example, by thermally conductive adhesive. The spacer portion 112 serves as heat insulation while also supporting and positioning the inclined coil module 2.

[0211] The spacer 112 and the housing 11 are integrally formed, which reduces airflow between the first mounting portion 111 and the cavity, thereby reducing heat conduction from the receiving cavity 110 to the first mounting portion 111 and reducing the possibility of temperature rise in the coil module 2. The spacer 112 is inclined, preferably with the same inclination angle as the coil module 2, so that the bottom wall of the first mounting portion 111 is parallel to the coil module 2, facilitating the installation of the coil module 2 in the first mounting portion 111.

[0212] As shown in Figures 20 and 30, in one possible embodiment, the charging device includes a mounting member 8, in which the coil module 2 is mounted. The mounting member 8 is mounted within a first mounting portion 111. The mounting member 8 includes a second mounting portion 81, which may be a groove structure. The inner wall of the second mounting portion 81 is provided with positioning protrusions and snap-fit ​​parts. The cover plate 21 is correspondingly provided with positioning grooves and snap-fit ​​parts, allowing the coil module 2 to be fixed within the second mounting portion 81 via the cover plate 21. The cover plate 21 and the mounting member 8 can also be fixedly connected by means of adhesive bonding, etc., which is not limited here. The outer surface of the second mounting portion 81 and the inner wall of the first mounting portion 111 are provided with corresponding snap-fit ​​structures, allowing the mounting member 8 to be fixedly mounted within the first mounting portion 111. The mounting member 8 and the first mounting portion 111 can also be fixedly connected by means of adhesive bonding, etc., which is not limited here.

[0213] Mounting component 8 is installed within the first mounting portion 111. Mounting component 8 has a mounting component side plate 82 and a mounting component base plate 83, which together form a second mounting portion 81. Coil module 2 is installed within the second mounting portion 81. The inner surface of mounting component side plate 82 is provided with multiple positioning portions 84 and multiple first snap-fit ​​portions 85. The positioning portions 84 are, for example, positioning protrusions. Cover plate 21 is provided with positioning structures and snap-fit ​​structures corresponding to the positioning portions 84 and first snap-fit ​​portions 85 on the inner surface of mounting component side plate 82, enabling cover plate 21 to be installed in the second mounting portion 81. The outer surface of mounting component side plate 82 is provided with a second snap-fit ​​portion 86, and the inner wall of the first mounting portion 111 is provided with a snap-fit ​​structure corresponding to the second snap-fit ​​portion 86, enabling heat sink to be installed in the first mounting portion 111. The mounting base plate 83 of the mounting component 8 can separate the coil module 2 and the spacer 112, and can improve the heat insulation effect between the coil module 2 and the charging module 3, so as to reduce the temperature of the coil module 2 during charging.

[0214] In one possible embodiment, the end of the mounting member 8 protrudes from the first mounting portion 111 and is disposed around the coil module 2. The portion of the mounting member 8 that protrudes from the receiving cavity 110 communicates with the receiving cavity 110. The portion of the mounting member 8 that communicates with the receiving cavity 110 can be made of a material with a high thermal conductivity, so that heat in the receiving cavity 110 can be dissipated through the mounting member 8, thereby reducing the temperature in the receiving cavity 110 and thus reducing the possibility of the temperature in the receiving cavity 110 being conducted to the coil module 2.

[0215] In one possible embodiment, the portion of the mounting member 8 that communicates with the cavity can be a mesh structure, and a breathable and waterproof membrane is provided on the mesh structure. The mesh structure of the mounting member 8 allows the receiving cavity 110 to communicate with the external environment, enabling high-temperature gas inside the receiving cavity 110 to escape through the mounting member 8, thereby reducing the temperature inside the receiving cavity 110. The breathable and waterproof membrane improves the waterproof effect of the charging device, reduces the possibility of water entering the receiving cavity 110, reduces the possibility of short circuit in the charging module 3, and helps improve the safety of the charging module.

[0216] In one possible embodiment, the mounting component 8 can also be adjusted to be a heat insulation component according to product design requirements. The part of the mounting component 8 that communicates with the receiving cavity 110 can be made of a material with a low thermal conductivity, such as polycarbonate (PC) material with a thermal conductivity of less than 0.5 W / m·K, in order to reduce the rate at which heat in the receiving cavity 110 is conducted to the charging surface.

[0217] In one possible embodiment, the coil module 2 further includes a second circuit board 25, which is connected to the charging module 3 so that the charging module 3 can supply power to the coil 24 through the second circuit board 25.

[0218] In one possible embodiment, the second circuit board 25 is integrated with the coil module 2 on the same side of the spacer 112, located on the side of the spacer 112 away from the charging module 3. The second circuit board 25 and the coil 24 are mounted on the same side of the spacer 112, facilitating electrical connection between the second circuit board 25 and the coil 24, reducing the difficulty of installing the second circuit board 25, and improving the assembly efficiency of the charging device.

[0219] As shown in FIG30, in one possible embodiment, the second circuit board 25 is disposed separately from the coil 24. The coil 24 is located on the side of the spacer 112 away from the charging module 3, and the second circuit board 25 is located on the side of the spacer 112 close to the charging module 3. Both the second circuit board 25 and the charging module 3 are disposed in the receiving cavity 110.

[0220] The second circuit board 25 is electrically connected to the charging module 3. Both the second circuit board 25 and the charging module 3 are housed within the receiving cavity 110, facilitating their interconnection. The charging module 3 supplies power to the coil 24 via the second circuit board 25. During operation, the second circuit board 25 also generates heat. By placing the second circuit board 25 within the receiving cavity 110 and separating it from the coil 24 via the spacer 112, the possibility of heat generated by the second circuit board 25 being conducted to the coil 24 is reduced. This helps lower the temperature of the coil 24 during charging, thereby improving the charging efficiency of the charging device for electronic devices.

[0221] As shown in Figure 30, in one possible embodiment, both the spacer 112 and the mounting member 8 are provided with through holes to allow wires to pass through, so that the coil module 2 can be electrically connected to the second circuit board 25 in the receiving cavity 110, or the second circuit board 25 can be electrically connected to the charging module 3 in the receiving cavity 110.

[0222] In one possible embodiment, spring pins are provided on the spacer 112 and the mounting member 8. One end of the spring pin protrudes from the inner wall of the spacer 112 or the mounting member 8 and can be connected to the coil module 2 or the second circuit board 25 integrated into the coil module 2. The other end of the spring pin is electrically connected to the charging module 3 or the second circuit board 25 disposed in the receiving cavity 110. When installing the coil module 2, the coil module 2 only needs to contact the spring pin, which can reduce the installation difficulty of the charging device and completely separate the first mounting part 111 and the receiving cavity 110, reducing the possibility of heat conduction from the receiving cavity 110 to the coil module 2.

[0223] As shown in Figures 20 and 30, in one possible embodiment, the charging module 3 includes a first circuit board 31 and multiple electronic devices 32. The multiple electronic devices 32 include a transformer 321, a high-voltage electrolytic capacitor 322, a low-voltage solid-state capacitor 323, and a main control chip 324. The specific structure or function of the electronic devices 32 is the same as that in the first embodiment, and will not be described again here.

[0224] As shown in Figure 20, along the length Y of the charging device, the first circuit board 31 includes a first end and a second end. Along the direction from the first end to the second end, the distance between the coil module 2 and the first circuit board 31 gradually increases, resulting in a larger space between the second end of the first circuit board 31 and the coil module 2. The transformer 321 and the high-voltage electrolytic capacitor 322 in the electronic device 32 are located near the second end of the first circuit board 31.

[0225] Multiple electronic components 32 are concentrated on the side of the first circuit board 31 away from the coil module 2, increasing the distance between the electronic components 32 and the coil module 2, thereby reducing the possibility of heat generated by the multiple electronic components 32 being conducted to the coil module 2. The mounting position of the multiple electronic components 32 can be adjusted according to the space within the receiving cavity 110 to improve the utilization rate of the receiving space, thereby increasing the distance between the electronic components 32 and the spacer 112, and also reducing the size of the charging device.

[0226] As shown in Figures 4 and 20, in one possible embodiment, the inner wall of the receiving cavity 110 is provided with a plurality of protrusions 113. The structure of the protrusions 113 is the same as that in the first embodiment, and will not be described again here.

[0227] As shown in Figures 20 and 30, in one possible embodiment, the charging device further includes a connector 33. The specific structure or function of the connector 33 is the same as or similar to that of the first embodiment, and will not be described again here.

[0228] The connector 33 and multiple electronic components 32 are mounted on the first circuit board 31. Along the length Y of the charging device, the connector 33 is located on the side of the first circuit board 31 away from the transformer 321 and the high-voltage electrolytic capacitor 322. Mounting the connector 33 on the first circuit board 31 facilitates its electrical connection with the charging module 3. The transformer 321 and the high-voltage electrolytic capacitor 322 on the first circuit board 31 contain high-voltage current. The large distance between the connector 33 and the transformer 321 and the high-voltage electrolytic capacitor 322 reduces the possibility of air breakdown due to voltage difference, which could lead to arc discharge, causing circuit burnout or component damage, thus improving the safety of the charging device.

[0229] In one possible embodiment, the number of connectors 33 can be set to multiple. For example, connectors 33 are provided on the front and rear sides of the charging device. A separate connector circuit board 331 can be provided at the end of the connector 33. The connector circuit board 331 of the connector 33 is electrically connected to the first circuit board 31 through wires or other structures to meet the charging needs of multiple device users.

[0230] As shown in Figures 20 and 30, in one possible embodiment, a pin 34 is provided on the side of the bottom cover 12 away from the housing 11, and an insulating member 35 is provided between the pin 34 and the charging module 3. The specific structure or function of the pin 34 is the same as or similar to that of the first embodiment, and the specific structure or function of the insulating member 35 is the same as or similar to that of the third embodiment, which will not be described again here.

[0231] This application relates to a charging device, including a housing 1, a coil module 2, and a charging module 3. The housing 1 has a receiving cavity 110 and a first mounting portion 111. The housing 1 also includes a spacer portion 112 located between the receiving cavity 110 and the first mounting portion 111. The coil module 2 is mounted on the first mounting portion 111, and the charging module 3 is mounted in the receiving cavity 110 and electrically connected to the coil module 2, enabling the charging module 3 to supply power to the coil module 2, thereby generating current in the coil module 2. When electronic devices such as smartwatches come into contact with the coil module 2, the charging device can wirelessly charge the electronic devices through electromagnetic induction. The spacer portion 112, located between the coil module 2 and the charging module 3, can reduce the possibility of heat generated by the charging module 3 being conducted to the coil module 2 during charging, thereby reducing the temperature of the electronic devices during charging and improving the charging efficiency of the charging device.

[0232] [Sixth Embodiment]

[0233] As shown in Figures 4, 18, 19, and 20, the sixth embodiment of this application provides a charging device, which differs from the first embodiment mainly in the structure of the charging module 3. Specifically, the charging device of this embodiment includes a housing 1, a coil module 2, and a charging module 3. The housing 1 has a receiving cavity 110 and a first mounting portion 111. The receiving cavity 110 also has a spacer portion 112, which is, for example, a heat insulation member. The spacer portion 112 is located between the receiving cavity 110 and the first mounting portion 111. The coil module 2 is mounted on the first mounting portion 111, and the charging module 3 is mounted in the receiving cavity 110 and electrically connected to the coil module 2.

[0234] As shown in Figure 18, the charging module 3 includes a first circuit board 31, and the coil module 2 includes a second circuit board 25 and a coil 24. The second circuit board 25 is mounted on the first circuit board 31 and forms a non-zero angle with the first circuit board 31. One end of the second circuit board 25 is provided with a wire connection portion 251 for electrical connection with the coil 24. The wire connection portion 251 is located on the side of the second circuit board 25 away from the first circuit board 31 to facilitate connection with the coil 24. The charging module 3 also includes wires that can pass through the spacer 112, so that both ends of the wires are connected to the wire connection portion 251 and the coil 24 respectively, thereby electrically connecting the coil 24 and the second circuit board 25.

[0235] The second circuit board 25 is mounted on the first circuit board 31 to facilitate electrical connection between the two circuit boards. This allows the charging module 3 to supply power to the coil 24 via the second circuit board 25, generating current within the coil 24 and wirelessly charging the electronic device using electromagnetic technology. During operation, the second circuit board 25 also generates heat. Placing the second circuit board 25 within the receiving cavity 110 reduces the likelihood of this heat being conducted to the coil 24, thus lowering the temperature of the coil 24 during charging and improving the charging efficiency of the electronic device.

[0236] The outer casing 1 includes a housing 11 and a bottom cover 12. The coil module 2 is mounted on the housing 11, and the bottom cover 12 is located at the end of the housing 11 away from the coil module 2. The cross-sectional area of ​​the housing 11 gradually decreases along the direction away from the bottom cover 12, reducing the size of the charging device and making it more portable. For example, in electronic devices such as smartwatches, the charging position of a smartwatch has a strap or similar structure on both sides. The coil module 2 is located on the side of the housing 11 away from the bottom cover 12, and the cross-sectional area of ​​the housing 11 gradually decreases along the direction away from the bottom cover 12. This reduces the structure around the coil module 2, thereby reducing the possibility of interference between the housing 11 and the strap or similar structure, and improving the stability during charging. This structure also reduces the space within the receiving cavity 110. The second circuit board 25 is mounted on the side of the first circuit board 31 near the coil 24. The first circuit board 31 and the second circuit board 25 have a non-zero included angle, and the cross-sectional area of ​​the second circuit board 25 gradually decreases along the direction away from the first circuit board 31, improving the space utilization within the receiving cavity 110 and reducing the possibility of interference between the second circuit board 25 and the spacer 112.

[0237] As shown in Figure 18, in one possible embodiment, the charging device includes a separator 9 located between the first circuit board 31 and the second circuit board 25, and mounted on the first circuit board 31. The second circuit board 25 is mounted on the separator 9. The second circuit board 25's mounting to the first circuit board 31 via the separator 9 improves the stability of the second circuit board 25 after mounting, reduces the possibility of the second circuit board 25 shaking or falling off, and further reduces the possibility of short circuits caused by contact between the second circuit board 25 and the electronic components 32 in the first circuit board 31, thus improving the safety of the charging device.

[0238] In one possible embodiment, the separator 9 is made of an insulating material. The insulating material can separate the first circuit board 31 and the second circuit board 25, reducing the possibility of electrical connection between the second circuit board 25 and the electronic device 32 mounted on the first circuit board 31, which helps to improve the safety of the charging device.

[0239] As shown in Figures 18 and 31, in one possible embodiment, the separator 9 includes a first side plate 91 and a second side plate 92, both of which extend in a direction perpendicular to the first circuit board 31 and are located between the second circuit board 25 and a plurality of electronic devices 32.

[0240] The charging module 3 is connected to a power source. It converts high-voltage current into low-voltage current, which is then conducted to the coil module 2, which in turn charges the electronic device. Therefore, the charging module 3 contains multiple high-voltage electronic components 32, while the second circuit board 25 handles low-voltage current. If the distance between the second circuit board 25 and the high-voltage electronic components 32 in the charging module 3 is small, the high voltage difference may cause air breakdown, leading to arc discharge, which could burn out circuits or damage components, or cause signal interference. The first side plate 91 separates the second circuit board 25 from the transformer 321 among the multiple electronic components 32, and the second side plate 92 separates the second circuit board 25 from the fuse 325 among the multiple electronic components 32. Both the first side plate 91 and the second side plate 92 are made of insulating material, which reduces the possibility of arc discharge between the second circuit board 25 and the electronic components 32 causing circuit burnout or component damage, thereby improving the electrical safety of the charging device.

[0241] As shown in Figures 18 and 31, in one possible embodiment, the separator 9 includes a third side plate 93 and a separator base plate 96. The third side plate 93 is disposed opposite to the first side plate 91, and the first side plate 91, the second side plate 92, and the third side plate 93 are located on the same side of the separator base plate 96 and are all connected to the separator base plate 96, so that the first side plate 91, the second side plate 92, the third side plate 93, and the separator base plate 96 enclose a receiving space 95, within which the second circuit board 25 is located. The first side plate 91 and the third side plate 93 can restrict the position of the wireless charging circuit board, allowing the second circuit board 25 to be installed within the receiving space 95, reducing the possibility of a short circuit between the second circuit board 25 and the electronic device 32 mounted on the first circuit board 31.

[0242] As shown in Figures 31 and 32, in one possible embodiment, the accommodating space 95 has a fixing part 94, which includes a first fixing part 941 and a second fixing part 942. The first fixing part 941 is located at the angle between the first side plate 91 and the partition bottom plate 96 and extends into the accommodating space 95. The second fixing part 942 is located at the angle between the third side plate 93 and the partition bottom plate 96 and extends into the accommodating space 95, so that the first fixing part 941 and the second fixing part 942 abut against the two sides of the second circuit board 25.

[0243] The fixing part 94 abuts against the second circuit board 25, allowing the fixing part 94 to clamp the second circuit board 25 from both sides, restricting the position of the second circuit board 25 within the receiving space 95, and improving the reliability of the second circuit board 25 after installation on the separator 9. The fixing part 94 protrudes from the first side plate 91 and the third side plate 93, and the cross-sectional area of ​​the first fixing part 941 is smaller than the cross-sectional area of ​​the first side plate 91, and the cross-sectional area of ​​the second fixing part 942 is smaller than the cross-sectional area of ​​the third side plate 93, so that there is a gap between the second circuit board 25 and the first side plate 91 and the third side plate 93, thereby improving the heat dissipation effect of the second circuit board 25.

[0244] As shown in Figures 31 and 32, in one possible embodiment, the extension length of the first fixing part 941 is greater than the extension length of the second fixing part 942 in the direction from the first side plate 91 to the third side plate 93. The first side plate 91 is located between the second circuit board 25 and the high-voltage electronic device 32. The larger extension length of the first fixing part 941 increases the distance between the second circuit board 25 and the first side plate 91, thereby improving the distance between the second circuit board 25 and the high-voltage electronic device 32 and ultimately enhancing the safety of the charging module 3.

[0245] As shown in Figure 34, in one possible embodiment, the charging module 3 includes a third circuit board 37, which is perpendicular to the first circuit board 31. The electronic devices 32 mounted on the first circuit board 31 and the electronic devices 32 mounted on the third circuit board 37 can be arranged in an alternating manner to reduce the volume occupied by the charging module 3 in the receiving cavity 110, thereby miniaturizing the charging device and making it easy to carry.

[0246] As shown in Figures 33 and 34, in one possible embodiment, the first circuit board 31 is parallel to the bottom wall of the outer casing 1, and the third circuit board 37 is perpendicular to the first circuit board 31, making the third circuit board 37 perpendicular to the bottom wall of the outer casing 1. The parallelism of the first circuit board 31 to the bottom wall of the outer casing 1 and the perpendicularity of the third circuit board 37 to the bottom wall of the outer casing 1 utilize the space within the receiving cavity 110 perpendicular to the bottom wall of the outer casing 1, thereby reducing the space occupied by the charging module 3 within the receiving cavity 110. This facilitates increasing the distance between the charging module 3 and the coil module 2, thereby reducing the possibility of heat generated by the charging module 3 during operation being conducted to the coil module 2, which in turn helps reduce the temperature of the coil module 2 during charging, thus improving the charging efficiency of the charging module 3 for electronic devices.

[0247] As shown in Figures 33 and 34, in one possible embodiment, the third circuit board 37 is located on the side of the first circuit board 31 near the coil 24. Along the direction away from the first circuit board 31, the cross-sectional area of ​​the second circuit board gradually decreases, which can improve the space utilization rate in the receiving cavity 110 and reduce the possibility of interference between the third circuit board 37 and the spacer 112.

[0248] As shown in Figure 34, in one possible embodiment, the electronic device 32 includes a transformer 321 and a high-voltage electrolytic capacitor 322. The transformer 321 and the high-voltage electrolytic capacitor 322 can be mounted on a third circuit board 37 to improve the space utilization within the housing cavity 110. During the operation of the charging device, the transformer 321 and the high-voltage electrolytic capacitor 322 generate a significant amount of heat. The third circuit board 37 is located on the side of the first circuit board 31 closest to the coil 24. The fact that the transformer 321 and the high-voltage electrolytic capacitor 322 are located on the side of the third circuit board 37 closest to the first circuit board 31 increases the distance between the transformer 321 and the high-voltage electrolytic capacitor 322 and the coil 24. This reduces the possibility of heat generated by the transformer 321 and the high-voltage electrolytic capacitor 322 being conducted to the coil 24, which helps to lower the temperature of the coil 24 and improve the charging efficiency of the charging device for the electronic device.

[0249] As shown in Figures 33 and 34, in one possible embodiment, the electronic device 32 further includes a main control chip 324, which is mounted on the side of the first circuit board 31 away from the coil module 2. During the operation of the charging device, the main control chip 324 generates a large amount of heat. By positioning the main control chip 324 on the side of the first circuit board 31 away from the coil module 2, it can disperse the heat sources of the multiple electronic devices 32, reducing the possibility of excessively high temperatures within the receiving cavity 110 due to concentrated heat.

[0250] As shown in Figure 18, in one possible embodiment, both the second circuit board 25 and the third circuit board 37 are mounted on the first circuit board 31, and the second circuit board 25 and the third circuit board 37 are parallel to each other, forming a mounting space between them for mounting electronic devices 32. The parallelism of the second circuit board 25 and the third circuit board 37 expands the mounting space between them, increasing the distance between the second circuit board 25 and the electronic devices 32 mounted on the third circuit board 37. This reduces the possibility of arc discharge between the second circuit board 25 and the electronic devices 32, leading to circuit burnout or component damage, thereby improving the electrical safety of the charging device.

[0251] In one possible embodiment, the first circuit board 31 is parallel to the bottom wall of the housing 1, and the third circuit board 37 is mounted on the first circuit board 31 and perpendicular to the bottom wall of the housing 1. The electronic devices 32 mounted on the third circuit board 37 are arranged at intervals along the height direction of the charging device. During the charging process, the heat generated by the multiple electronic devices 32 varies. The electronic devices 32 with higher heat generation are mounted on the side of the third circuit board 37 closer to the first circuit board 31 to increase the distance between them and the coil module 2. The electronic devices 32 with lower heat generation can be mounted on the side of the third circuit board 37 away from the first circuit board 31, thereby reducing the temperature of the coil module 2 during the charging process and improving the charging efficiency of the charging device for the electronic devices 32.

[0252] As shown in Figures 4 and 18, in one possible embodiment, the inner wall of the receiving cavity 110 is provided with a plurality of protrusions 113, which are spaced apart circumferentially along the receiving cavity 110. After the charging device is installed in the receiving cavity 110, the plurality of protrusions 113 abut against the sidewall of the first circuit board 31. The plurality of protrusions 113 can be arranged axially symmetrically to make the first circuit board 31 more stable after being installed in the receiving cavity 110. The third circuit board 37 is installed on the first circuit board 31, thereby fixing the third circuit board 37 inside the receiving cavity 110.

[0253] As shown in Figure 20, in one possible embodiment, the outer casing 1 includes a housing 11 and a bottom cover 12. The charging module 3 is installed in a receiving cavity 110 within the housing 11, and the bottom cover 12 can seal the receiving cavity 110. The coil module 2 is located on the side of the housing 11 away from the bottom cover 12. The charging device includes a plug 34, and an insulator 35 is provided between the plug 34 and the charging module 3. The specific structure or function of the plug 34 is the same as or similar to that of the first embodiment, and the specific structure or function of the insulator 35 is the same as or similar to that of the third embodiment, and will not be described again here.

[0254] This application relates to a charging device, including a housing 1, a coil module 2, and a charging module 3. The housing 1 has a receiving cavity 110 and a first mounting portion 111. The receiving cavity 110 also has a spacer portion 112 located between the receiving cavity 110 and the first mounting portion 111. The coil module 2 is mounted on the first mounting portion 111, and the charging module 3 is mounted inside the receiving cavity 110 and electrically connected to the coil module 2 to supply power to the coil module 2, thereby generating current within the coil module 2. This allows the charging device to wirelessly charge electronic devices through electromagnetic induction. The coil module includes a second circuit board 25, and the charging module 3 includes a first circuit board 31. The second circuit board 25 is mounted on the first circuit board 31 and electrically connected to it, enabling the charging module 3 to supply power to the coil module 2 through the second circuit board 25. During operation, the second circuit board 25 generates heat. Since the second circuit board 25 is located inside the receiving cavity 110, the possibility of heat generated by the second circuit board 25 being conducted to the electronic device is reduced, which helps improve the charging efficiency of the charging device for electronic devices. The first circuit board 31 and the second circuit board 25 have a non-zero angle between them, which can improve the space utilization rate within the receiving cavity 110.

Claims

1. A charging device, characterized in that, The charging device includes: The housing and the bottom cover are provided, wherein the housing has a receiving cavity and the bottom cover is installed on the housing to cover the receiving cavity; A coil module, wherein the coil module is mounted on the end of the housing away from the bottom cover; A charging module, which is installed in the receiving cavity and electrically connected to the coil module; A spacer portion is mounted on the housing and located between the coil module and the charging module.

2. The charging device according to claim 1, characterized in that, The coil module is inclined, with the angle between the coil module and the horizontal direction being less than or equal to 45°. An opening is provided on the side of the housing away from the bottom cover. The coil module is located at the opening. The coil module includes a cover plate, a first magnetic component, a magnetic shielding component, and a coil. The magnetic shielding component includes a first receiving groove and a second receiving groove. The second receiving groove is arranged around the first receiving groove. The first magnetic component is located in the first receiving groove. The coil is located in the second receiving groove. The side of the magnetic shielding component with the receiving groove is connected to the cover plate.

3. The charging device according to claim 2, characterized in that, The spacer and the housing are integrally formed. The opening position forms a first mounting groove. The cover plate is connected to the inner wall of the first mounting groove. The bottom wall of the first mounting groove is provided with a first through hole. A wire is provided in the first through hole to connect the coil module and the charging module.

4. The charging device according to claim 3, characterized in that, A spring pin is provided on the spacer portion. One end of the spring pin protrudes from the bottom wall of the first mounting groove and is electrically connected to the coil module. The other end of the spring pin extends into the receiving cavity and is electrically connected to the charging module.

5. The charging device according to claim 2, characterized in that, The spacer is connected to the inner wall of the receiving cavity. The charging module is located on the side of the spacer closer to the bottom cover, and the coil module is located on the side of the spacer away from the bottom cover. The cross-section of the spacer is stepped.

6. The charging device according to any one of claims 3 to 5, characterized in that, A heat insulation layer is provided on the side of the spacer facing the coil module, and / or a heat insulation layer is provided on the side of the spacer facing the charging module.

7. The charging device according to claim 2, characterized in that, The housing is provided with a heat dissipation component, which is arranged around the cover plate and communicates with the receiving cavity; the heat dissipation component has a mesh structure to connect the receiving cavity with the external space; or, the heat dissipation component is provided with a breathable and waterproof membrane, which completely covers the heat dissipation component.

8. The charging device according to claim 1, characterized in that, The charging module includes a first circuit board and a plurality of electronic components. A portion of the plurality of electronic components is mounted on the side of the first circuit board closer to the coil module, and another portion is mounted on the side of the first circuit board away from the coil module.

9. The charging device according to claim 8, characterized in that, The inner wall of the receiving cavity is provided with a plurality of protrusions, which are spaced apart circumferentially along the receiving cavity and abut against the side wall of the first circuit board. Alternatively, the charging module may further include a second circuit board, which has an angle with the first circuit board, and some of the electronic devices are mounted on the second circuit board; Alternatively, the first circuit board can be arranged parallel to the coil module.

10. The charging device according to claim 8, characterized in that, The charging device includes a connector that is electrically connected to the charging module. Along the length of the charging device, the connector and the coil module are located on the same side. Along the height direction of the charging device, the first circuit board is located on the side of the connector away from the coil module, and the connector is mounted on the first circuit board; or, along the height direction of the charging device, the connector is located at the end of the housing away from the bottom cover and is electrically connected to the first circuit board.

11. The charging device according to claim 1, characterized in that, The bottom cover has a pin on the side away from the receiving cavity. When the pin is retracted along the length of the charging device, it rotates away from the coil module. An insulating element is provided between the pin and the charging module.

12. The charging device according to claim 1, characterized in that, The charging device further includes a telescopic cable module and a connector. The telescopic cable module and the connector are both located within the receiving cavity. Along the height direction of the charging device, the bottom cover, the connector, the telescopic cable module, the charging module, and the coil module are arranged sequentially. The coil module, the connector, and the telescopic cable module are all electrically connected to the charging module. A support frame is provided between the charging module and the bottom cover. The telescopic cable module is located within the support frame. The connector is installed on the bottom cover. The support frame includes a support frame base plate and a protective plate. The support frame base plate is located between the charging module and the telescopic cable module. The protective plate is located on the side of the support frame base plate away from the charging module and is located at the edge of the support frame base plate. The telescopic cable module is located within the protective plate.

13. The charging device according to claim 12, characterized in that, The protective plate has multiple limiting protrusions on the side facing the telescopic line module, and the multiple limiting protrusions are spaced apart along the circumference of the protective plate; the telescopic line module includes a recess, and the limiting protrusions are located in the recess to limit the position of the telescopic line module.

14. The charging device according to claim 12, characterized in that, The protective plate includes a first notch and a second notch, which are spaced apart along the circumference of the protective plate. The outlet of the telescopic cable module is located within the first notch. The telescopic cable module includes a connecting wire, and the end of the connecting wire is provided with a connecting end. The support frame includes a receiving member, which is installed at the position of the first notch. The receiving member has a receiving groove on the side away from the telescopic cable module, and the connecting end is placed in the receiving groove. One end of the receiving groove has a third notch to connect the receiving groove and the first notch. The receiving member has a magnet mounting groove on the side away from the receiving groove, and a second magnetic element is provided in the magnet mounting groove to attract the connecting end. The side of the support frame base plate facing the charging module has a first support column, which is connected to the charging module. The side of the receiving member away from the support frame base plate has a second support column, which is connected to the bottom cover.

15. The charging device according to claim 12, characterized in that, The telescopic cable module includes a winding assembly, in which the connecting cable is housed. The winding assembly includes a locking block and a rotating disk. The rotating disk rotates as the connecting cable extends and retracts. A first track and a second track are provided on the rotating disk. The locking block moves along the first track or the second track. A limiting member is provided between the first track and the second track. When the connecting cable extends a preset length, the locking block engages with the limiting member. The telescopic cable module includes an upper cover and a lower cover, which together form a cavity. The winding assembly is located within the cavity. The telescopic cable module includes multiple third support columns, one end of which is connected to the lower cover and the other end of which is connected to the bottom cover.

16. A charging device, characterized in that, The charging device includes: The housing has a cavity inside, and the surface of the housing includes a bottom surface and a charging surface. The bottom surface is located at the bottom of the housing, and the charging surface is located at the top of the housing and is spaced apart from the bottom surface. A coil module is located in the receiving cavity, and the signal transmitting surface of the coil module is arranged facing the charging surface. A charging module, located in the receiving cavity and electrically connected to the coil module; The plug is mounted on the housing and electrically connected to the charging module, and the plug is exposed on the bottom surface; The charging surface is inclined relative to the bottom surface, and the projection of the charging surface is located within the projection range of the bottom surface in a projection perpendicular to the bottom surface.

17. A charging device, characterized in that, The charging device includes: The housing has a receiving cavity and a first mounting portion, and the housing further includes a heat insulation module located between the receiving cavity and the first mounting portion; A coil module, wherein the coil module is mounted on the first mounting portion; A charging module, which is installed in the receiving cavity and electrically connected to the coil module; The heat insulation module includes a support plate and a heat insulation component, with the heat insulation component located on the side of the support plate closer to the coil module and / or on the side farther away from the coil module.

18. A charging device, characterized in that, The charging device includes: The housing has a receiving cavity and a first mounting portion, and the housing further includes a spacer portion located between the receiving cavity and the first mounting portion; A coil module, wherein the coil module is mounted on the first mounting portion; A charging module, which is installed in the receiving cavity and electrically connected to the coil module; The coil module includes a magnetic component, a coil, and a heat spreader. The coil is arranged around the magnetic component and electrically connected to the charging module. The heat spreader is located on the side of the magnetic component and the coil closer to the charging module.

19. A charging device, characterized in that, The charging device includes: The housing has a receiving cavity and a first mounting portion, and the housing further includes a spacer portion located between the receiving cavity and the first mounting portion; A coil module, wherein the coil module is mounted on the first mounting portion; A charging module, which is installed in the receiving cavity and electrically connected to the coil module; The mounting component is installed within the first mounting portion, and the end of the mounting component protrudes from the first mounting portion and is disposed around the coil module.

20. A charging device, characterized in that, The charging device includes: The housing has a receiving cavity and a first mounting portion, and the housing also has a spacer portion located between the receiving cavity and the first mounting portion; A coil module, wherein the coil module is mounted on the first mounting portion; A charging module, which is installed in the receiving cavity and electrically connected to the coil module; The charging module includes a first circuit board, and the coil module includes a second circuit board. The second circuit board is mounted on the first circuit board and electrically connected to the first circuit board. The first circuit board and the second circuit board have an angle of non-zero degrees.

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