A charging device

Abstract

This application relates to a charging device, including a housing, a bottom cover, a coil module, and a charging module. The housing has a receiving cavity and a first mounting slot. The housing also includes a heat insulation component located between the receiving cavity and the first mounting slot. The coil module is mounted in the first mounting slot, and the charging device is mounted within the receiving cavity. The coil module includes a magnetic component and a coil. The coil is arranged around the magnetic component and electrically connected to the charging module, generating a current within the coil. When an electronic device contacts the coil module, it is wirelessly charged via electromagnetic induction. A heat-spreading component is provided on the side of the magnetic component and 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 housing, reducing the possibility of heat concentration and localized high temperatures within the coil module, thus improving the charging efficiency of the electronic device.

Description

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 smart electronic devices now feature wireless charging, allowing them to charge their batteries wirelessly. The charging device includes a coil; when the smart electronic device is brought close to the coil, it is charged through electromagnetic induction. During operation, the current flowing through the coil generates heat, causing the temperature at the point of contact between the smart electronic device and the coil to rise. When the temperature of the smart electronic device reaches a threshold, the charging power of the device decreases. Utility Model Content

[0003] In view of this, this application provides a charging device to solve the problem of temperature rise and charging power reduction during the charging process of smart electronic devices.

[0004] This application provides a charging device, the charging device comprising:

[0005] The housing has a receiving cavity and a first mounting groove, and the housing further includes a heat insulation element located between the receiving cavity and the first mounting groove;

[0006] A coil module, wherein the coil module is installed in the first mounting slot;

[0007] A charging module, which is installed in the receiving cavity and electrically connected to the coil module;

[0008] 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.

[0009] In one possible embodiment, in the projection along the axial direction of the coil module, the projection of the coil and the projection of the magnetic element are both located within the projection range of the heat spreader.

[0010] In one possible embodiment, the heat spreader includes a circuit board, and both the coil and the charging module are electrically connected to the circuit board.

[0011] In one possible embodiment, the circuit board includes a first connection portion and a second connection portion. The first connection portion includes at least two mutually insulated first connection points, and the second connection portion includes at least two mutually insulated second connection points. The first connection points and the second connection points correspond one-to-one and are electrically connected. The coil is electrically connected to the first connection point, and the charging module is electrically connected to the second connection point.

[0012] In one possible embodiment, both the first connecting portion and the second connecting portion are located on the side of the circuit board facing the coil module.

[0013] In one possible embodiment, the circuit board includes a clearance portion that connects the first mounting slot and the receiving cavity, through which the leads of the coil module or the charging module can pass.

[0014] In one possible embodiment, in the projection along the axial direction of the coil module, the projection of the magnetic element and the projection of the coil are both located within the projection range of the circuit board.

[0015] In one possible embodiment, the heat spreader further includes a heat spreader plate with a thermal conductivity greater than that of the circuit board, and the circuit board is disposed around the heat spreader plate.

[0016] In one possible embodiment, in the projection along the axial direction of the coil module, the projection of the magnetic element and the projection of the coil are both located within the projection range of the heat spreader.

[0017] In one possible embodiment, the coil module includes a magnetic shielding component, the magnetic shielding component including a first receiving groove and a second receiving groove, the second receiving groove being disposed around the first receiving groove, the magnetic component being located in the first receiving groove, and the coil being located in the second receiving groove; the coil and the heat-spreading component are respectively located on both sides of the magnetic shielding component.

[0018] In one possible embodiment, the coil module further includes thermally conductive adhesive located between the magnetic shielding element and the heat-spreading element.

[0019] In one possible embodiment, the coil module includes a cover plate located on the side of the magnetic shielding member where the first receiving groove and the second receiving groove are provided, and the coil module is mounted in the first mounting groove through the cover plate.

[0020] This application relates to a charging device, including a housing, a bottom cover, a coil module, and a charging module. The housing has a receiving cavity and a first mounting slot. The housing also includes a heat insulation component located between the receiving cavity and the first mounting slot. The coil module is mounted in the first mounting slot, and the charging device is mounted within the receiving cavity. The coil module includes a magnetic component and a coil. The coil is arranged around the magnetic component and electrically connected to the charging module, generating a current within the coil. When an electronic device contacts the coil module, it is wirelessly charged via electromagnetic induction. A heat-spreading component is provided on the side of the magnetic component and 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 housing, reducing the possibility of heat concentration and localized high temperatures within the coil module, thus improving the charging efficiency of the electronic device. Attached Figure Description

[0021] 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.

[0022] Figure 1 This is a schematic diagram of the structure of the charging device provided in the embodiments of this application;

[0023] Figure 2 for Figure 1 A cross-sectional view along the AA direction;

[0024] Figure 3 An exploded view of the charging device provided in the embodiments of this application;

[0025] Figure 4 A cross-sectional view of the magnetic component, coil, and magnetic shielding component provided in the embodiments of this application;

[0026] Figure 5 A schematic diagram of one embodiment of the heat spreader provided in this application;

[0027] Figure 6 This is a schematic diagram of another embodiment of the heat spreader provided in this application.

[0028] Figure label:

[0029] 1-Outer shell;

[0030] 11-Receiving cavity;

[0031] 12-First mounting slot;

[0032] 3-Coil module;

[0033] 31-Magnetic components;

[0034] 32-coil;

[0035] 33 - Heat-absorbing component;

[0036] 331 - Circuit Board;

[0037] 331a - First connecting part;

[0038] 331b - Second connecting part;

[0039] 331c - Avoidance section;

[0040] 332 - Heat Spreader Plate;

[0041] 34 - Magnetic shielding components;

[0042] 341 - First receiving tank;

[0043] 342 - Second receiving tank;

[0044] 35 - Cover plate;

[0045] 4-Charging module;

[0046] 5-Insulation components;

[0047] 6-Installation components;

[0048] 61 - Second mounting slot;

[0049] 62-Base plate. Detailed Implementation

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] like Figure 1 and Figure 2 As shown, this application provides a charging device, including a housing 1, a coil module 3 and a charging module 4. The housing 1 has a receiving cavity 11 and a first mounting groove 12. The housing also includes a heat insulation member 5, which is located between the receiving cavity 11 and the first mounting groove 12. The coil module 3 is installed in the first mounting groove 12. The charging device is installed in the receiving cavity 11 and is electrically connected to the coil module 3.

[0055] The coil module 3 is electrically connected to the charging module 4, which generates current in the coil module 3. When electronic devices such as smartwatches come into contact with the coil module 3, the charging device can wirelessly charge the electronic devices through the principle of electromagnetic induction.

[0056] like Figure 3 and Figure 4 As shown, the coil module 3 includes a magnetic element 31 and a coil 32, wherein the coil 32 is arranged around the magnetic element 31 and is electrically connected to the charging module 4.

[0057] The back of the electronic device is equipped with metal materials such as iron, nickel, and cobalt that can be attracted by magnets. When the electronic device is placed on the charging device, the magnetic component 31 can attract the electronic device, reducing the possibility of the electronic device slipping during charging. The coil 32 is electrically connected to the charging module 4. Current is passed through the coil 32, enabling the charging device to wirelessly charge the electronic device through electromagnetic induction.

[0058] like Figure 3 As shown, the coil module 3 also includes a heat spreader 33, which is located on the side of the magnetic component 31 and the coil 32 near the charging module 4. In the projection along the axial direction of the coil module 3, the projections of the coil 32 and the magnetic component 31 are both within the projection range of the heat spreader 33.

[0059] When the charging device charges the electronic device, current flows through the coil 32, charging the electronic device through electromagnetic induction. During charging, heat is generated in the coil 32, causing the temperature at the location of the coil 32 in the coil module 3 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 33 is provided on the side of the magnetic component 31 and the coil 32 near the charging module 4, allowing the heat generated by the coil 32 to be conducted to the heat spreader 33. The projections of the coil 32 and the magnetic component 31 are both within the projection range of the heat spreader 33, enabling heat conduction between the coil 32, the magnetic component 31, and the heat spreader 33. The heat spreader 33 absorbs the heat generated by the coil 32 and then conducts it to the magnetic component 31 and the outer casing 1, reducing the concentration of heat generated by the coil module 3 at the location of the coil 32, which could lead to higher local temperatures within the coil module 3 and potentially lower charging efficiency for the electronic device.

[0060] like Figure 3 and Figure 4 As shown, in one possible embodiment, the coil module 3 includes a magnetic shielding member 34, which includes a first receiving groove 341 and a second receiving groove 342. The second receiving groove 342 is arranged around the first receiving groove 341. The magnetic member 31 is located in the first receiving groove 341, and the coil 32 is located in the second receiving groove 342.

[0061] The coil 32 wirelessly charges electronic devices through electromagnetic induction. Placing the coil 32 and the magnetic component 31 in different receiving slots of the magnetic shielding component 34 can reduce the possibility of the magnetic component 31 disturbing the magnetic field generated by the coil 32, which is beneficial to improving the stability of the charging process.

[0062] like Figure 3 As shown, the first receiving groove 341 and the second receiving groove 342 are located on the same side of the magnetic shielding member 34, and the heat dissipation member 33 is located on the side of the magnetic shielding member 34 where the first receiving groove 341 and the second receiving groove 342 are not provided, so that the coil 32 and the heat dissipation member 33 are located on both sides of the magnetic shielding member 34.

[0063] The coil module 3 also includes a cover plate 35, 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 35. The cover plate 35 is located on the side of the magnetic shielding member 34 where the first receiving groove 341 and the second receiving groove 342 are provided, so as to shorten the distance between the coil 32 and the electronic device and make the charging process of the charging device more stable. The heat dissipation member 33 is provided on the side of the magnetic shielding member 34 where the first receiving groove 341 and the second receiving groove 342 are not provided. It can reduce the possibility of heat generated by the coil 32 being conducted to the electronic device through the heat dissipation member 33, which helps to reduce the temperature of the electronic device during charging and improves charging efficiency.

[0064] In one possible embodiment, the coil module 3 includes thermally conductive adhesive located between the magnetic shielding element 34 and the heat-spreading element 33.

[0065] The thermally conductive adhesive has a high thermal conductivity, which facilitates the heat generated by the coil 32 to be conducted to the heat-spreading component 33 through the magnetic shielding component 34 and the thermally conductive adhesive. This reduces the possibility of the heat generated by the coil 32 being conducted to the electronic device through the cover plate 35, which helps to reduce the temperature of the electronic device during charging and improve charging efficiency.

[0066] like Figure 5 and Figure 6 As shown, in one possible embodiment, the heat spreader 332 includes a circuit board 331, on which a first connection portion 331a and a second connection portion 331b are provided. The first connection portion 331a includes at least two first connection points, which can be solder joints. The leads of the coil 32 are soldered to the first connection portion 331a, making the coil 32 electrically connected to the first connection portion 331a. The at least two first connection points are mutually insulated, which can reduce the possibility of short circuit caused by contact of the leads of the coil 32. The second connection portion 331b includes at least two second connection points, which can be solder joints. The leads of the charging module 4 are soldered to the second connection points of the second connection portion 331b, making the charging module 4 electrically connected to the second connection portion 331b. The at least two second connection points are mutually insulated, which can reduce the possibility of short circuit caused by contact of the leads of the charging module 4. The first connection point in the first connection part 331a and the second connection point in the second connection part 331b correspond one-to-one with each other through the printed circuit on the circuit board 331, so that the coil 32 is electrically connected to the charging module 4, which can reduce the difficulty of electrical connection between the coil 32 and the charging module 4.

[0067] like Figure 5 and Figure 6 As shown, in one possible embodiment, the first connecting portion 331a and the second connecting portion 331b are located on the same side of the circuit board 331, and both are located on the side of the circuit board 331 facing the coil module 3.

[0068] The charging module 4 is disposed in the receiving cavity 11, and the coil module 3 is installed in the first mounting slot 12. The first connecting part 331a and the second connecting part 331b are both disposed on the side of the circuit board 331 facing the coil module 3, which facilitates the welding of the charging module 4 to the second connecting part 331b and helps to improve the production efficiency of the charging device.

[0069] like Figure 5 and Figure 6 As shown, the circuit board 331 includes a clearance portion 331c, which can be a through hole or a notch, and can connect to the solder joint receiving cavity 11 of the first mounting groove 12. The lead wire of the coil module 3 or the lead wire of the charging module 4 can pass through the clearance portion.

[0070] The clearance portion 331c on the circuit board 331 allows the wires to pass through the circuit board 331, facilitating the soldering of the charging module 4 to the second connection point in the second connection portion 331b.

[0071] In one possible embodiment, the first connection portion 331a is located on the side of the circuit board 331 facing the coil 32, and the second connection portion 331b is located on the side of the circuit board 331 away from the coil 32.

[0072] The leads of coil 32 are soldered to solder joints in the first connecting portion 331a, which is located on the side of circuit board 331 facing coil 32, facilitating electrical connection between coil 32 and the first connecting portion 331a. Charging module 4 is located on the side of circuit board 331 away from coil 32, and the leads of charging module 4 are soldered to solder joints in the second connecting portion 331b, which is also located on the side of circuit board 331 away from coil 32. The leads of charging module 4 do not need to pass through circuit board 331, reducing the possibility of heat generated during operation of charging module 4 being conducted to coil module 3 through the lead clearance portion, thus reducing the possibility of temperature rise in coil module 3.

[0073] like Figure 5 As shown, in one possible embodiment, in the projection along the axial direction of the coil module 3, the projection of the magnetic element 31 and the projection of the coil 32 are both located within the projection range of the circuit board 331, so that the circuit board 331 can equalize the temperature of the magnetic element 31 and the coil 32.

[0074] The circuit board 331 has a high thermal conductivity, which can conduct the heat generated by the coil 32 to the magnetic component 31, the outer shell 1 and other structures, thereby reducing the possibility of heat concentration in the coil module 3 and causing the charging module 4 to overheat.

[0075] like Figure 6 As shown, in one possible embodiment, the heat spreader 33 includes a heat spreader plate 332, the heat spreader plate 332 having a thermal conductivity greater than that of the circuit board 331, and the circuit board 331 is arranged around the heat spreader plate 332. In the projection along the axial direction of the coil module 3, the projections of the magnetic element 31 and the coil 32 are both located within the projection range of the heat spreader plate 332.

[0076] The heat spreader 332 can be made of copper or other materials with high thermal conductivity, so that the heat spreader 33 can absorb the heat generated by the coil 32 more quickly and make the temperature of each position in the coil module 3 more uniform, reducing the possibility that the charging efficiency of the charging device for electronic devices will be reduced due to excessively high local temperature in the coil module 3.

[0077] The circuit board 331 provides a first connection portion 331a and a second connection portion 331b for the heat spreader 33, enabling the coil module 3 and the charging module 4 to be electrically connected through the heat spreader 33. The circuit board 331 is arranged around the heat spreader 332, allowing both the magnetic component 31 and the coil 32 to exchange heat with the heat spreader 332, thereby balancing the heat within the coil module 3.

[0078] like Figure 3 As shown, in one possible embodiment, the surface of the coil module 3 protrudes from the first mounting groove 12, facilitating contact between the electronic device and the coil module 3, reducing the distance between the electronic device and the coil module 3, and thus improving charging efficiency. The charging device also includes a heat insulation component 5, which can separate the coil module 3 from the charging module 4, reducing the possibility of heat generated by the charging module 4 being conducted to the coil module 3.

[0079] The heat insulation component 5 and the outer shell 1 are integrally formed, which can reduce the air flow between the first mounting groove 12 and the receiving cavity 11, thereby reducing the heat conduction from the receiving cavity 11 to the first mounting groove 12 and reducing the possibility of the coil module 3 temperature rising.

[0080] In one possible embodiment, the cover plate 35 and the side wall of the first mounting groove 12 can be fixed by means of adhesive, snap-fit, etc., so that the coil module 3 is fixed in the first mounting groove 12, and there is a gap between the coil module 3 and the bottom wall of the first mounting groove 12, which can reduce the possibility of heat in the receiving cavity 11 being conducted to the coil module 3.

[0081] like Figure 3 As shown, in one possible embodiment, the charging device includes a mounting member 6, a coil module 3 is mounted in the mounting member 6, and the mounting member 6 is mounted in a first mounting slot 12.

[0082] Mounting component 6 includes a second mounting groove 61. The inner wall of the second mounting groove 61 is provided with positioning protrusions and snap-fit ​​parts. The cover plate 35 is correspondingly provided with positioning grooves and snap-fit ​​parts, so that the coil module 3 can be fixed in the second mounting groove 61 by the cover plate 35. The cover plate 35 and the mounting component 6 can also be fixedly connected by adhesive or other methods, which are not limited here. The outer surface of the second mounting groove 61 and the inner wall of the first mounting groove 12 are provided with corresponding snap-fit ​​structures, so that the mounting component 6 can be fixedly installed in the first mounting groove 12. The mounting component 6 and the first mounting groove 12 can also be fixedly connected by adhesive or other methods, which are not limited here.

[0083] A mounting component 6 is provided in the first mounting slot 12. The mounting component 6 may be equipped with a base plate 62. The base plate 62 can separate the coil module 3 and the heat insulation component 5, thereby improving the heat insulation effect between the coil module 3 and the receiving cavity 11 and reducing the temperature of the coil module 3 during charging. The mounting component 6 may also be a ring structure, with no base plate 62 on the side near the heat insulation component 5, to facilitate the electrical connection between the coil module 3 and the charging module 4.

[0084] The end of the mounting piece 6 protrudes from the first mounting groove 12 and can be provided with a glossy layer. The coil module 3 is located in the area enclosed by the glossy layer, making the position of the coil module 3 more obvious and easy to identify, and also making the charging device more aesthetically pleasing.

[0085] This application relates to a charging device, including a housing 1, a coil module 3, and a charging module 4. The housing 1 has a receiving cavity 11 and a first mounting groove 12. The housing also includes a heat insulation member 5, which is located between the receiving cavity 11 and the first mounting groove 12. The coil module 3 is mounted in the first mounting groove 12, and the charging device is mounted in the receiving cavity 11. The coil module 3 includes a magnetic member 31 and a coil 32. The coil 32 is arranged around the magnetic member 31 and is electrically connected to the charging module 4, causing a current to be generated in the coil 32. When an electronic device comes into contact with the coil module 3, it is wirelessly charged through electromagnetic induction. A heat spreader 33 is provided on the side of the magnetic member 31 and the coil 32 near the charging module 4. In the projection along the axial direction of the coil module 3, the projection of the coil 32 and the projection of the magnetic member 31 are both located within the projection range of the heat spreader 33. When current is passed through the coil 32, the temperature of the coil 32 will rise. The heat dissipation component 33 conducts the heat generated by the coil 32 to the magnetic component 31 or the outer shell 1 and other structures, which reduces the possibility of heat concentration and high local temperature in the coil module 3, and is conducive to improving the charging efficiency of electronic devices.

Claims

1. A charging device, characterized by, The charging device includes: The housing (1) has a receiving cavity (11) and a first mounting groove (12), and the housing further includes a heat insulation element (5) located between the receiving cavity (11) and the first mounting groove (12); Coil module (3), the coil module (3) is installed in the first mounting slot (12); A charging module (4) is installed in the receiving cavity (11) and is electrically connected to the coil module (3); The coil module (3) includes a magnetic component (31), a coil (32) and a heat spreader (33). The coil (32) is arranged around the magnetic component (31) and electrically connected to the charging module (4). The heat spreader (33) is located on the side of the magnetic component (31) and the coil (32) closer to the charging module (4).

2. The charging device of claim 1, wherein, In the projection along the axial direction of the coil module (3), the projection of the coil (32) and the projection of the magnetic element (31) are both located within the projection range of the heat spreader (33).

3. The charging device of claim 1, wherein, The heat spreader (33) includes a circuit board (331), and the coil (32) and the charging module (4) are both electrically connected to the circuit board (331).

4. The charging device of claim 3, wherein, The circuit board (331) includes a first connection part (331a) and a second connection part (331b). The first connection part (331a) includes at least two mutually insulated first connection points, and the second connection part (331b) includes at least two mutually insulated second connection points. The first connection points and the second connection points correspond one-to-one and are electrically connected. The coil (32) is electrically connected to the first connection point, and the charging module (4) is electrically connected to the second connection point.

5. The charging device of claim 4, wherein, The first connecting part (331a) and the second connecting part (331b) are both located on the side of the circuit board (331) facing the coil module (3).

6. The charging device of claim 4, wherein, The circuit board (331) includes a clearance portion (331c) that connects the first mounting groove (12) and the receiving cavity (11). The lead wire of the coil module (3) or the lead wire of the charging module (4) can pass through the clearance portion (331c).

7. The charging device of claim 3, wherein, In the projection along the axial direction of the coil module (3), the projection of the magnetic element (31) and the projection of the coil (32) are both located within the projection range of the circuit board (331).

8. The charging device of claim 3, wherein, The heat spreader (33) further includes a heat spreader plate (332), the heat spreader plate (332) having a thermal conductivity greater than that of the circuit board (331), and the circuit board (331) being arranged around the heat spreader plate (332).

9. The charging device of claim 8, wherein, In the projection along the axial direction of the coil module (3), the projection of the magnetic element (31) and the projection of the coil (32) are both located within the projection range of the heat spreader (332).

10. The charging device according to any one of claims 1 to 9, characterized in that, The coil module (3) includes a magnetic shielding component (34), which includes a first receiving groove (341) and a second receiving groove (342). The second receiving groove (342) is arranged around the first receiving groove (341). The magnetic component (31) is located in the first receiving groove (341), and the coil (32) is located in the second receiving groove (342). The coil (32) and the heat-spreading component (33) are located on both sides of the magnetic shielding component (34).

11. The charging device of claim 10, wherein, The coil module (3) also includes thermally conductive adhesive, which is located between the magnetic shielding component (34) and the heat-spreading component (33).

12. The charging device of claim 10, wherein, The coil module (3) includes a cover plate (35), which is located on the side of the magnetic shielding member (34) away from the heat-spreading member (33). The coil module (3) is installed in the first mounting slot (12) through the cover plate (35).

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