A charging device

Abstract

This application relates to a charging device, including a housing, 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 module located between the receiving cavity and the first mounting slot. The coil module is mounted in the first mounting slot, and the charging module is mounted in the receiving cavity. The coil module and the charging module are electrically connected, allowing the charging module to supply power to the coil module, generating current within the coil module. Electronic devices such as smartwatches come into contact with the coil module, enabling the charging device to wirelessly charge the electronic devices via electromagnetic induction. 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 away 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 devices, thereby increasing the charging power of the charging device and shortening the charging time for the electronic devices.

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 module; when the smart electronic device is brought close to the coil module, it is charged through electromagnetic induction. The charging device also includes electronic components such as transformers and capacitors. During operation, these components generate significant heat. Existing charging devices, due to the heat generated by these components, raise the temperature of the smart electronic device. When the temperature reaches a set 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 slot, and the housing further includes a heat insulation module located between the receiving cavity and the first mounting slot;

[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 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.

[0009] In one possible embodiment, the heat insulation element includes a heat-equalizing layer, wherein the heat-equalizing layer is provided with a heat-equalizing layer on the side away from the support plate, or the heat-equalizing layer is provided with heat-equalizing layers on both sides.

[0010] In one possible embodiment, the heat spreader is bonded and fixed to the support plate or the heat insulation layer, the heat spreader is made of copper, and the thickness of the heat spreader is 0.5 mm to 3 mm.

[0011] In one possible embodiment, the heat dissipation layer includes a first heat dissipation layer and a second heat dissipation layer, wherein the first heat dissipation layer is made of copper and the second heat dissipation layer is made of graphene, and the first heat dissipation layer and the second heat dissipation layer are bonded to each other.

[0012] In one possible embodiment, the heat insulation module includes an inclined section and a first straight section connected to each other, the first straight section being mounted on the inner wall of the housing, and a heat insulation cavity being provided between the first straight section and the coil module.

[0013] In one possible embodiment, the coil module is tilted, and the tilted segment has the same tilt angle as the coil module, and the two are in contact.

[0014] In one possible embodiment, the heat insulation module further includes a second straight section connected to the inclined section, the first straight section and the second straight section being located on both sides of the inclined section, and both the first straight section and the second straight section extending along the length direction of the charging device, the second straight section being mounted on the inner wall of the housing.

[0015] In one possible embodiment, the heat insulation element is a heat insulation sheet fixed to the support plate or a heat insulation coating coated on the support plate.

[0016] In one possible embodiment, the housing further includes an isolator located between the coil module and the heat insulation module.

[0017] In one possible embodiment, the charging device includes at least one heat sink disposed within the receiving cavity, a plurality of heat sinks surrounding the charging module and in contact with the inner wall of the housing, the heat sink including an insulating layer and a heat transfer layer, the heat transfer layer being located on the side of the insulating layer away from the charging module.

[0018] In one possible embodiment, the charging device further includes a plug located outside the receiving cavity, an insulating element disposed between the plug and the charging module, thermally conductive adhesive disposed between the insulating element and the charging module, and thermally conductive adhesive also disposed between the insulating element and the plug.

[0019] This application relates to a charging device, including a housing, 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 module located between the receiving cavity and the first mounting slot. The coil module is mounted in the first mounting slot, and the charging module is mounted in the receiving cavity. The coil module and the charging module are electrically connected, allowing the charging module to supply power to the coil module, generating current within the coil module. Electronic devices such as smartwatches come into contact with the coil module, enabling the charging device to wirelessly charge the electronic devices via electromagnetic induction. 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 away 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 devices, thereby increasing the charging power of the charging device and shortening the charging time for the electronic devices. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is a schematic diagram of the structure of the charging device provided in the embodiments of this application;

[0022] Figure 2 for Figure 1 A cross-sectional view along the AA direction;

[0023] Figure 3 An exploded view of the charging device provided in the embodiments of this application;

[0024] Figure 4 This is a cross-sectional view of the heat insulation module provided in the embodiments of this application;

[0025] Figure 5 A cross-sectional view of the housing provided in an embodiment of this application;

[0026] Figure 6 An exploded view of one embodiment of the isolation member provided in this application;

[0027] Figure 7 An exploded view of another embodiment of the isolation member provided in this application;

[0028] Figure 8 An exploded view of one embodiment of the heat spreader provided in this application.

[0029] Figure 9This is a schematic diagram of the charging module and the heat sink provided in the embodiments of this application;

[0030] Figure 10 An exploded view of the charging module and the heat sink provided in the embodiments of this application.

[0031] Figure label:

[0032] 1-Shell;

[0033] 11-Receiving cavity;

[0034] 12-First mounting slot;

[0035] 13-Protrusion;

[0036] 2-Bottom cover;

[0037] 3-Coil module;

[0038] 4-Charging module;

[0039] 41-Circuit board;

[0040] 42-Electronic devices;

[0041] 5-Isolation components;

[0042] 6-Insulation module;

[0043] 61-Support plate;

[0044] 62-Insulation component;

[0045] 621 - Heat exchange layer;

[0046] 621a - First heat exchange layer;

[0047] 621b - Second heat exchange layer;

[0048] 622 - Insulation layer;

[0049] 63 - Through hole;

[0050] 64- Inclined section;

[0051] 65 - First straight section;

[0052] 66 - Second straight section;

[0053] 7-Installation components;

[0054] 71 - Second mounting slot;

[0055] 8-Heat dissipation components;

[0056] 9-Pin;

[0057] 10 - Insulating components. Detailed Implementation

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] like Figure 1 and Figure 2 As shown, this application embodiment provides a charging device, including a housing, a coil module 3 and a charging module 4. The housing has a receiving cavity 11 and a first mounting groove 12. The housing also includes a heat insulation module 6, 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, and the charging module 4 is installed in the receiving cavity 11.

[0063] The charging module 4 is electrically connected to the coil module 3, which can supply power to the coil module 3 and generate 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 electromagnetic induction.

[0064] like Figure 2 As shown, the coil module 3 is tilted, and the angle between the plane where the coil module 3 is located and the plane where the bottom cover 2 is located is less than or equal to 45°.

[0065] Normally, when the charging device charges an electronic device, the side with the bottom cover 2 is placed on a flat surface. At this time, the angle between the coil module 3 and the horizontal plane is less than or equal to 45°. When the charging device is charging the electronic device, the electronic device is placed on the side of the coil module 3 away from the housing 1, with the angle between the coil module 3 and the horizontal plane less than or equal to 45°, which reduces the possibility of the electronic device slipping. A screen is provided on one side of the electronic device. During charging, the side of the electronic device without the screen contacts the coil module 3, with the angle between the coil module 3 and the horizontal plane less than or equal to 45°, making it convenient for the user to view the screen of the electronic device during charging.

[0066] The outer casing includes a housing 1 and a bottom cover 2. The coil module 3 is mounted on the housing 1, and the bottom cover 2 is located on the side of the housing 1 away from the coil module 3. The cross-sectional area of ​​the housing 1 gradually decreases along the direction away from the bottom cover 2, reducing the size of the charging device and making it easier to carry. For example, in electronic devices such as smartwatches, the charging position is flanked by structures such as watch straps. The gradual decrease in the cross-sectional area of ​​the housing 1 along the direction away from the bottom cover 2 reduces the structure around the coil module 3, thereby reducing the possibility of interference between the housing 1 and the watch straps, and improving charging stability. This structure compresses the space within the receiving cavity 11, reducing the distance between the coil module 3 and the charging module 4. During charging, the charging module 4 generates heat. The reduced distance between the coil module 3 and the charging module 4 facilitates heat conduction from the charging module 4 to the coil module 3, and then to the electronic device, causing the temperature of the electronic device 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.

[0067] like Figure 2 and Figure 3 As shown, the housing also includes an isolation element 5, which is located between the heat insulation module 6 and the coil module 3.

[0068] The insulating component 5 and the heat insulation module 6 reduce the possibility of heat generated by the charging module 4 being conducted to the coil module 3, minimizing the temperature impact of the charging module 4 on the coil module 3 and the electronic device. This improves the charging power of the charging device and helps shorten the charging time. The coil module 3 is electrically connected to the charging module 4. This can be achieved by providing through holes 63 on both the insulating component 5 and the heat insulation module 6, with wires installed within these holes, allowing the coil module 3 and charging module 4 to connect via wires. Alternatively, spring-loaded pin structures can be provided on both the insulating component 5 and the heat insulation module 6, allowing the coil module 3 and charging module 4 to be electrically connected via spring-loaded pins. Other methods of electrical connection between the coil module 3 and charging module 4 are also possible, with corresponding connection structures provided on the insulating component 5 and the heat insulation module 6; these are not limited here.

[0069] like Figure 2 , Figure 3 and Figure 4 As shown, in one possible embodiment, the heat insulation module 6 includes an inclined section 64, a first straight section 65, and a second straight section 66. The inclined section 64 is parallel to and fits against the coil module 3. The first straight section 65 and the second straight section 66 are located on both sides of the inclined section 64, and both the first straight section 65 and the second straight section 66 extend along the length direction X of the charging device and are installed on the inner wall of the housing, so that the heat insulation module 6 is installed in the receiving cavity 11 through the first straight section 65 and the second straight section 66.

[0070] The inner wall of the outer casing is provided with a protrusion 13. The first straight section 65 and the second straight section 66 of the heat insulation module 6 can be interference-fitted with the protrusion 13 to fix it in the receiving cavity 11. The protrusion 13 protrudes from the inner wall of the receiving cavity 11, and the first straight section 65 and the second straight section 66 are perpendicular to the protrusion 13, making the heat insulation module 6 more stable in the receiving cavity 11. The first straight section 65 and the second straight section 66 can also be connected to the inner wall of the receiving cavity 11 in other ways. The inclined section 64 has the same inclination angle as the isolation member 5 and fits against the isolation member 5, which can improve the space utilization in the receiving cavity 11 and reduce the possibility of interference between the heat insulation module 6 and the charging module 4.

[0071] The first straight section 65 has a heat insulation cavity between it and the isolation component, which can increase the distance between the heat insulation module 6 and the coil module 3, reduce the possibility of heat in the heat insulation module 6 being conducted to the coil module 3, which is beneficial to reducing the temperature of the coil module 3 during the charging process and improving the charging efficiency of electronic devices.

[0072] like Figure 2 and Figure 3 As shown, in one possible embodiment, the coil module 3 is installed in the first mounting groove 12, and the surface of the coil module 3 protrudes from the receiving cavity 11, which facilitates contact between the electronic device and the coil module 3, reduces the distance between the electronic device and the coil module 3, and helps to improve charging efficiency.

[0073] The isolator 5 and the housing 1 are integrally formed, which can reduce the air flow between the first mounting groove 12 and the cavity, 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.

[0074] like Figure 2 and Figure 3 As shown, in one possible embodiment, the charging device includes a mounting member 7, a coil module 3 is mounted in the mounting member 7, and the mounting member 7 is mounted in a first mounting slot 12.

[0075] Mounting component 7 includes a second mounting groove 71. The inner wall of the second mounting groove 71 is provided with positioning protrusions and snap-fit ​​components. The coil module 3 is correspondingly provided with positioning grooves and snap-fit ​​components, allowing the coil module 3 to be fixed within the second mounting groove 71. The coil module 3 and mounting component 7 can also be fixedly connected by adhesive or other methods, which are not limited here. The outer surface of the second mounting groove 71 and the inner wall of the first mounting groove 12 are provided with corresponding snap-fit ​​structures, allowing the mounting component 7 to be fixedly installed within the first mounting groove 12. The mounting component 7 and the first mounting groove 12 can also be fixedly connected by adhesive or other methods, which are not limited here.

[0076] A mounting component 7 is provided within the first mounting groove 12. The inner wall of the mounting component 7 can separate the coil module 3 and the insulating 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 end of the mounting component 7 protrudes from the first mounting groove 12 and can be provided with a glossy coating. The coil module 3 is located within the area enclosed by the glossy coating, making the position of the coil module 3 more obvious and easy to identify, and also making the charging device more aesthetically pleasing.

[0077] like Figure 2 , Figure 3 and Figure 5 As shown, in one possible embodiment, the inner wall of the receiving cavity 11 is provided with a plurality of protrusions 13, which are spaced apart circumferentially along the receiving cavity 11.

[0078] The charging module 4 includes a circuit board 41 and multiple electronic components 42, which are mounted on the circuit board 41. Multiple protrusions 13 abut against the sidewalls of the circuit board 41, creating an interference fit between the circuit board 41 and the protrusions 13, thus fixing the circuit board 41 within the receiving cavity 11. Preferably, the protrusions 13 extend vertically along the inner wall of the receiving cavity 11, and the multiple protrusions 13 can be arranged axially symmetrically, making the circuit board 41 more stable after being mounted in the receiving cavity 11.

[0079] The coil module 3 is tilted along the length X of the charging device. The distance between the two ends of the coil module 3 and the circuit board 41 is different. The circuit board 41 is equipped with multiple electronic devices 42. During the charging process, the electronic devices 42 will generate heat. By concentrating the electronic devices 42 on the side of the circuit board 41 with a larger distance from the coil module 3, the distance between the electronic devices 42 and the coil module 3 can be increased. This can reduce the possibility of the heat generated by the electronic devices 42 being conducted to the coil module 3, which is beneficial to reducing the temperature of the coil module 3 during the charging process and improving the charging efficiency of the electronic device.

[0080] like Figure 2As shown, in one possible embodiment, of the plurality of electronic devices 42, some are mounted on the side of the circuit board 41 closer to the coil module 3, and others are mounted on the side of the circuit board 41 away from the coil module 3.

[0081] During the operation of the charging device, multiple electronic components 42 will generate a lot of heat. By placing multiple electronic components 42 on both sides of the circuit board 41, the heat source can be dispersed, reducing the possibility of heat concentration causing the temperature inside the receiving cavity 11 to be too high.

[0082] like Figure 2 As shown, in one possible embodiment, a pin 9 is provided on the side of the bottom cover 2 away from the receiving cavity 11. The pin 9 can be a fixed pin 9 or a folding pin 9. In this embodiment, the pin 9 is a folding pin 9 to facilitate the user's storage of the charging device; when the pin 9 is extended, it can be plugged into the socket to supply power to the charging device. Along the length direction X of the charging device, the pin 9 rotates away from the coil module 3 when stored.

[0083] The bottom cover 2 is provided with a pin 9 storage slot for storing the pin 9, so that the charging device can be placed stably on the table when the charging device charges the electronic device through an external power source.

[0084] The socket can be configured horizontally or vertically. When the plug 9 is inserted into a vertically configured socket, the side with the coil module 3 faces upwards. When the plug 9 is retracted, it rotates away from the coil module 3, which reduces the possibility of the plug 9 rotating and retracting into the storage slot and detaching from the socket, thus improving the stability of the charging process. It is worth mentioning that the angle between the coil module 3 and the horizontal direction is preferably set to °, so that the tilt angle of the coil module 3 is the same when the plug 9 is inserted into both vertically and horizontally configured sockets, thereby ensuring that the user's viewing angle of the electronic device screen remains the same.

[0085] like Figure 2 and Figure 3 As shown, in one possible embodiment, an insulating element 10 is provided between the pin 9 and the charging module 4.

[0086] Due to the limited space within the cavity 11, the distance between the circuit board 41 and the pin 9 in the charging module 4 is small. An insulating component 10 is provided between the pin 9 and the charging module 4 to increase the creepage distance between the pin 9 and the conductive contacts in the charging module 4, thereby preventing creepage or arcing and improving safety during the charging process.

[0087] In one possible embodiment, thermally conductive adhesive is provided between the insulating member 10 and the charging module 4 to facilitate the conduction of heat generated by the charging module to the insulating member 10. Thermally conductive adhesive is also provided between the insulating member 10 and the pin 9 to facilitate the conduction of heat in the insulating member 10 to the pin 9, and then to the charging device, thereby reducing the temperature inside the receiving cavity 11.

[0088] like Figure 2 , Figure 3 and Figure 6 As shown, in one possible embodiment, the heat insulation module 6 includes a support plate 61, and a protrusion 13 is also provided on the inner wall of the cavity 11 at the corresponding position of the heat insulation module 6. The side wall of the support plate 61 abuts against the protrusion 13, so that the support plate 61 and the protrusion 13 are interference fit, and the support plate 61 is fixed in the cavity 11.

[0089] The support plate 61 is disposed between the coil module 3 and the charging module 4, which can reduce the heat generated by the charging module 4 to be conducted to the coil module 3, thereby reducing the temperature of the coil module 3 and improving the charging efficiency of the electronic device.

[0090] like Figure 3 As shown, in one possible embodiment, a heat insulation member 62 is provided on the side of the support plate 61 near the isolation member 5 and / or on the side away from the isolation member 5. The heat insulation member 62 can be fixed in the receiving cavity 11 by the protrusion 13, or it can be glued to the support plate 61 and fixed in the receiving cavity 11 by the support plate 61.

[0091] The heat insulation component 62 and the support plate 61 are stacked, which reduces the heat transfer efficiency of the heat insulation module 6 and thus reduces the possibility of heat generated by the charging module 4 being conducted to the coil module 3. The heat insulation component 62 is located on the side of the support plate 61 near the insulating component 5, increasing the accommodating space on one side of the charging module 4 and facilitating its installation. The heat insulation component 62 is located on the side of the support plate 61 away from the insulating component 5, increasing the distance between the heat insulation module 6 and the insulating component 5, reducing the possibility of heat being conducted from the heat insulation module 6 to the insulating component 5, which helps to reduce the possibility of the coil module 3 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 insulating component 5, improves the heat insulation effect of the heat insulation module 6, reduces the possibility of heat generated by the charging module 4 being conducted to the coil module 3, and helps to reduce the possibility of the coil module 3 overheating during charging and improves the charging efficiency of the electronic device.

[0092] like Figure 3 , Figure 6 and Figure 7 As shown, in one possible embodiment, the heat insulation element 62 includes a heat equalization layer 621 and a heat insulation layer 622.

[0093] The heat insulation layer 622 in the heat insulation component 62 can be heat insulation cotton with a thermal conductivity of 0.014-0.016 W / m·K. The low thermal conductivity of the heat insulation cotton can reduce the heat generated by the charging module 4 and its conduction to the coil module 3. The heat dissipation layer 621 has a high thermal conductivity. The heat conducted to the heat insulation component 62 can be conducted to the inner wall of the receiving cavity 11 through the heat dissipation layer 621, and then discharged through the housing 1 to the charging device, thereby reducing the temperature of the heat insulation component 62 and improving its heat insulation effect.

[0094] like Figure 6 As shown, in one possible embodiment, the heat insulation layer 622 is disposed on the side of the heat distribution layer 621 away from the support plate 61.

[0095] The heat-equalizing 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 1, thereby reducing the temperature of the heat insulation component 62.

[0096] like Figure 7 As shown, in one possible embodiment, heat insulation layers 622 are provided on both sides of the heat-spreading layer 621 in the thickness direction.

[0097] Both sides of the heat-spreading layer 621 are provided with heat insulation layers 622, which can improve the heat insulation effect of the heat insulation component 62, thereby reducing the possibility of electrical energy generated by the charging module 4 being conducted to the coil module 3, which is conducive to reducing the temperature of the coil module 3 during the charging process and improving the charging efficiency.

[0098] 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.

[0099] In one possible embodiment, the heat spreader 621 is made of copper and has a thickness of 0.5 mm to 3 mm.

[0100] The heat dissipation layer 621 is used to conduct heat from the insulation component 62 to the housing 1. The copper sheet has a high thermal conductivity, and the thickness of the heat dissipation layer 621 is greater than 0.5 mm, which enables rapid heat conduction from the insulation component 62 to the housing 1. The thickness of the heat dissipation layer 621 is less than 3 mm, which reduces the thickness of the insulation component 62, thereby reducing the space occupied by the insulation module 6 in the receiving cavity 11 and improving the space utilization rate of the receiving cavity 11.

[0101] like Figure 8As shown, in one possible embodiment, the heat spreader 621 includes a first heat spreader 621a and a second heat spreader 621b, and the first heat spreader 621a and the second heat spreader 621b are bonded together. The first heat spreader 621a is made of copper, and the second heat spreader 621b is made of graphene.

[0102] The second heat-spreading layer 621b is made of graphene, which has good thermal conductivity. When the second heat-spreading layer 621b is bonded to the first heat-spreading layer 621a, the graphene and copper can quickly conduct heat from the insulation component 62 to the shell 1. The bonding of graphene and copper to form the heat-spreading layer 621 provides good thermal conductivity while reducing the amount of copper used. Graphene is also less expensive, thus reducing the production cost of the heat-spreading layer 621.

[0103] 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 4 to the coil module 3, reduce the temperature of the coil module 3 and the electronic device, and thus improve the charging efficiency.

[0104] like Figure 9 and Figure 10 As shown, in one possible embodiment, the charging device includes at least one heat sink 8. Along the height direction Z of the charging device, the heat sink 8 is located on the side of the heat insulation module 6 away from the insulating member 5 and is disposed around the charging module 4. The insulating member 5 is located between the circuit board 41 and the inner wall of the receiving cavity 11 and contacts the inner wall of the receiving cavity 11. A protrusion 13 is provided on the inner wall of the receiving cavity 11, and a plurality of heat sinks 8 are spaced apart to avoid the protrusion 13.

[0105] The heat sink 8 has a high thermal conductivity. It is arranged around the charging module 4 and in contact with the inner wall of the receiving cavity 11. It can conduct the heat generated by the charging module 4 to the inner wall of the receiving cavity 11 and conduct it out of the charging device through the housing 1. This helps to reduce the temperature inside the receiving cavity 11, thereby reducing the temperature of the coil module 3 during the charging process and improving the charging efficiency of the electronic device.

[0106] In one possible embodiment, the heat sink 8 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 4.

[0107] The heat transfer layer can be made of materials with high thermal conductivity, such as copper, graphene, or polymer materials, which facilitates the conduction of heat generated by the charging module 4 to the inner wall of the receiving cavity 11, 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 4 to separate the heat transfer layer from the charging module 4. This reduces the possibility of short circuit in the charging module 4 and also reduces the possibility of the charging module 4 and the housing 1 becoming electrified due to the connection between the charging module 4 and the housing 1 through the heat transfer layer, thus improving the safety of the charging device.

[0108] This application relates to a charging device, including a housing, a coil module 3, and a charging module 4. The housing has a receiving cavity 11 and a first mounting groove 12. The housing also includes a heat insulation module 6, 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 module 4 is mounted in the receiving cavity 11. The coil module 3 and the charging module 4 are electrically connected, so that the charging module 4 supplies power to the coil module 3, generating current in the coil module 3. Electronic devices such as smartwatches come into contact with the coil module 3, enabling the charging device to wirelessly charge the electronic devices through electromagnetic induction. The heat insulation module includes a support plate 61 and a heat insulation element 62. The heat insulation element 62 is located on the side of the support plate 61 closer to the coil module 3 and / or on the side farther away from the coil module 3, reducing the possibility of heat generated by the charging module 4 being conducted to the coil module 3. This minimizes the influence of the temperature of the coil module 3 and the electronic devices on the temperature of the charging module 4, thereby increasing the charging power of the charging device for the electronic devices and shortening the charging time.

Claims

1. A charging device, characterized in that, The charging device includes: The housing has a receiving cavity (11) and a first mounting groove (12), and the housing further includes a heat insulation module (6) 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 heat insulation module (6) includes a support plate (61) and a heat insulation component (62), with the heat insulation component (62) located on the side of the support plate (61) closer to the coil module (3) and / or away from the coil module (3).

2. The charging device of claim 1, wherein, The heat insulation component (62) includes a heat-equalizing layer (621), and a heat insulation layer (622) is provided on the side of the heat-equalizing layer (621) away from the support plate (61), or a heat insulation layer (622) is provided on both sides of the heat-equalizing layer (621).

3. The charging device of claim 2, wherein, The heat spreader (621) is bonded and fixed to the support plate (61) or the heat insulation layer (622). The heat spreader (621) is made of copper and has a thickness of 0.5 mm to 3 mm.

4. The charging device of claim 2, wherein, The heat dissipation layer (621) includes a first heat dissipation layer (621a) and a second heat dissipation layer (621b). The first heat dissipation layer (621a) is made of copper, and the second heat dissipation layer (621b) is made of graphene. The first heat dissipation layer (621a) and the second heat dissipation layer (621b) are bonded to each other.

5. The charging device of claim 1, wherein, The heat insulation element (62) is a heat insulation sheet fixed on the support plate (61) or a heat insulation coating coated on the support plate (61).

6. The charging device of claim 1, wherein, The housing also includes an isolation element (5) located between the coil module (3) and the heat insulation module (6).

7. The charging device according to any one of claims 1 to 6, characterized in that, The heat insulation module (6) includes an inclined section (64) and a first straight section (65) connected to each other. The first straight section (65) is installed on the inner wall of the housing. There is a heat insulation cavity between the first straight section (65) and the coil module (3).

8. The charging device of claim 7, wherein, The coil module (3) is inclined, and the inclined segment (64) has the same inclination angle as the coil module (3) and the two are in contact.

9. The charging device of claim 7, wherein, The heat insulation module (6) further includes a second straight section (66) connected to the inclined section (64). The first straight section (65) and the second straight section (66) are located on both sides of the inclined section (64), and both the first straight section (65) and the second straight section (66) extend along the length direction of the charging device. The second straight section (66) is installed on the inner wall of the housing.

10. The charging device according to any one of claims 1 to 6, characterized in that, The charging device includes at least one heat sink (8) disposed in the receiving cavity (11), the heat sink (8) is disposed around the charging module (4) and in contact with the inner wall of the housing, the heat sink (8) includes an insulating layer and a heat transfer layer, the heat transfer layer being located on the side of the insulating layer away from the charging module (4).

11. The charging device according to any one of claims 1 to 6, characterized in that, The charging device further comprises a pin (9) located outside the accommodating cavity (11), an insulating piece (10) is arranged between the pin (9) and the charging module (4), and heat-conducting glue is arranged between the insulating piece (10) and the charging module (4); heat-conducting glue is also arranged between the insulating piece (10) and the pin (9).

Images