Wireless charging device

Abstract

The invention relates to the technical field of charging accessories, and discloses a wireless charging device which comprises a shell and a charging module arranged in the shell, the shell is provided with heat dissipation holes and a charging contact position, and the charging module comprises a wireless charging coil, a thermoelectric refrigerating unit, a radiator and a circuit board assembly which are sequentially arranged. The circuit board assembly is used for converting input current to supply power to the wireless charging coil and the thermoelectric refrigerating unit; a contact piece is embedded in the charging contact position, and the two sides of the contact piece are attached to the charged electric appliance and the wireless charging coil respectively so as to carry out wireless charging; the refrigerating surface of the thermoelectric refrigerating unit is attached to the wireless charging coil and is used for cooling the wireless charging coil and the charged electric appliance; the heating surface of the thermoelectric refrigerating unit is cooled through the radiator, charging and cooling are integrated, a charged electric appliance can be safely used, high refrigerating efficiency is guaranteed, and the use experience of a user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of charging accessories, and in particular to a wireless charging device. Background Art

[0002] In the field of electronic consumer products, charging devices are indispensable. With the advancement of technology, most electrical devices on the market, such as mobile phones, have the function of wireless charging. However, when using wireless charging, the back of the mobile phone is in contact with the wireless charger, which makes it difficult to dissipate heat. When charging and using the mobile phone at the same time, the mobile phone often overheats and affects the user experience. When running certain games and software, the mobile phone heats up seriously, and the mobile phone will freeze or even crash when overheated. Effective cooling is required to ensure the life and safety of the mobile phone.

[0003] Existing cooling devices on the market, such as fan cooling and water cooling, often fail to provide timely and effective cooling when running large software and games. Moreover, most of them are back-clip cooling products. Although they can provide active cooling and heat dissipation for mobile phones, they often only have a separate mobile phone cooling and heat dissipation function and do not support wireless charging. Wireless charging and cooling and heat dissipation cannot be achieved at the same time. If used together with a wireless charger, interference will inevitably occur, affecting the charging and heat dissipation effects; and an external power supply is required for continuous power supply during use. When used for a long time, two charging cables are required to power the mobile phone's wireless charger and the heat dissipation back clip respectively, which is very inconvenient. Summary of the invention

[0004] The object of the present invention is to provide a wireless charging device which can cool down the charged electrical appliance while performing wireless charging, so that the charged electrical appliance can be used with peace of mind and a high cooling efficiency can be ensured.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A wireless charging device, comprising:

[0007] A housing, wherein the housing is provided with heat dissipation holes and a charging contact position, wherein a contact sheet is embedded in the charging contact position, and one side of the contact sheet is used to fit with the charged electrical appliance;

[0008] A charging module, wherein the charging module is fixedly placed in the shell, and the charging module comprises a wireless charging coil, a thermoelectric cooler, a heat sink and a circuit board assembly arranged in sequence, wherein the wireless charging coil is bonded to the other side of the contact sheet, and the cooling surface of the thermoelectric cooler is bonded to the wireless charging coil.

[0009] As an optional technical solution for the wireless charging device, a heat dissipation position is hollowed out in the middle of the circuit board assembly, and the charging module also includes a fan, which is embedded in the heat dissipation position and connected to the radiator.

[0010] As an optional technical solution of the wireless charging device, the shell is also provided with an air inlet, and the air inlet is arranged opposite to the fan.

[0011] As an optional technical solution for the wireless charging device, the shell is provided with connecting ribs in the air inlet.

[0012] As an optional technical solution for the wireless charging device, the shell includes a base and a back cover, the charging module is connected to the base, the heat dissipation holes and the charging contact positions are both arranged on the base, the back cover is detachably connected to the base to enclose the charging module, and the air inlet is arranged on the back cover.

[0013] As an optional technical solution for the wireless charging device, the wireless charging device also includes a clamp arm assembly, which includes two single-sided clamp arms arranged opposite to each other, and the two single-sided clamp arms are used to jointly clamp the charged electrical appliance, and the single-sided clamp arms are slidably nested in the shell, and the single-sided clamp arms are connected to the shell through elastic members, and contact portions are provided on opposite sides of the two single-sided clamp arms.

[0014] As an optional technical solution for the wireless charging device, a non-slip surface is provided on a side of the contact portion away from the fixing portion.

[0015] As an optional technical solution of the wireless charging device, the shell is provided with an input port, and the input port is electrically connected to the circuit board assembly.

[0016] As an optional technical solution of the wireless charging device, the contact piece is made of heat-conducting material.

[0017] Beneficial effects of the present invention:

[0018] The wireless charging device provided by the present invention includes a shell and a charging module fixed in the shell, and the shell is provided with heat dissipation holes and a charging contact position, and the heat dissipation holes are used to discharge the heat generated by the charging module; the charging module includes a wireless charging coil, a thermoelectric cooler, a radiator and a circuit board assembly arranged in sequence, and the circuit board assembly is used to convert the input current to supply power to the wireless charging coil, the thermoelectric cooler and the radiator; a contact sheet is embedded in the charging contact position, one side of the contact sheet is used to fit with the charged appliance, and the wireless charging coil is fit with the other side of the contact sheet, and the wireless charging coil can be charged through the wireless charging area of ​​the charged appliance; the cooling surface of the thermoelectric cooler is fit with the wireless charging coil, and is used to cool down the wireless charging coil and the charged appliance outside the contact sheet; the heating surface of the thermoelectric cooler is cooled by the radiator, and the wireless charging device can ensure a high cooling efficiency, integrate the two needs of charging and cooling, and can use the charged appliance with peace of mind while performing wireless charging only through the power supply of the circuit board assembly, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is an exploded view of a wireless charging device provided in a specific embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of the structure of a wireless charging device provided by a specific embodiment of the present invention from a first perspective;

[0021] Figure 3 It is a schematic diagram of the structure of the wireless charging device provided by a specific embodiment of the present invention from a second viewing angle.

[0022] In the figure:

[0023] 100, housing; 110, base; 111, heat dissipation hole; 112, charging contact position; 1121, contact sheet; 120, back cover; 121, air inlet; 1211, connecting rib; 122, input port;

[0024] 200, charging module; 210, wireless charging coil; 220, thermoelectric cooler; 230, heat sink; 240, circuit board assembly; 250, fan;

[0025] 300, clamp arm assembly; 311, single-sided clamp arm; 312, contact portion; 3121, anti-slip surface. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0027] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] In the description of this embodiment, the terms "upper", "lower", "right", "left" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0030] like Figures 1 to 3As shown, the present invention discloses a wireless charging device, including a shell 100 and a charging module 200. The shell 100 is provided with a heat dissipation hole 111 and a charging contact position 112, and the heat dissipation hole 111 is used to discharge the heat generated by the charging module 200; the charging module 200 is fixedly placed in the shell 100, and the charging module 200 includes a wireless charging coil 210, a thermoelectric cooler 220, a heat sink 230 and a circuit board assembly 240 arranged in sequence, and the circuit board assembly 240 is used to convert the input current to supply power to the wireless charging coil 210 and the thermoelectric cooler 220; a contact sheet 1121 is embedded in the charging contact position 112, and one side of the contact sheet 1121 is used to fit with the charged electrical appliance, and the wireless charging coil 210 and the contact position 112 are connected to each other. The other side of the contact sheet 1121 is fitted, and the wireless charging coil 210 can be charged through the wireless charging area of ​​the charged appliance; the cooling surface of the thermoelectric cooler 220 is fitted with the wireless charging coil 210, and is used to cool the wireless charging coil 210 and the charged appliance outside the contact sheet 1121; the heating surface of the thermoelectric cooler 220 is cooled by the radiator 230. The wireless charging device can ensure a high cooling efficiency, integrating the two needs of charging and cooling. It only needs to be powered by the circuit board assembly 240 to use the charged appliance with peace of mind while performing wireless charging, thereby improving the user experience.

[0031] Exemplarily, the contact sheet 1121 is made of a heat-conducting material, specifically a ceramic sheet, which can improve the heat conduction and cooling effect, or the contact sheet 1121 is thinned, and the thickness of the contact sheet 1121 is made as thin as possible without affecting the structural strength of the contact sheet 1121, which also has a good heat dissipation effect. An installation step is set in the inner circle of the charging contact position 112, the contact sheet 1121 is placed on the installation step, and an adhesive is set between the contact sheet 1121 and the installation step to ensure the installation stability of the contact sheet 1121. The contact sheet 1121 can cover the wireless charging coil 210 to ensure the good contact and wireless charging efficiency of the wireless charging module 200 of the charged appliance; and the thermoelectric cooler 220 can also cover the other side of the wireless charging coil 210 to ensure that a larger cooling surface area can timely and comprehensively cool the wireless charging device.

[0032] Specifically, the middle of the circuit board assembly 240 is hollowed out to provide a heat dissipation position, the charging module 200 further includes a fan 250, the radiator 230 cools the heating surface of the thermoelectric cooler 220, the fan 250 is embedded in the heat dissipation position and connected to the radiator 230, and the fan 250 is also powered by the circuit board assembly 240, so that the fan 250 can cool the radiator 230, and assist the radiator 230 in completing the cooling effect of the heating surface of the thermoelectric cooler 220. In this embodiment, the fan 250 is connected to the radiator 230 by a screw.

[0033] Furthermore, a plurality of heat dissipation holes 111 are provided on the outer periphery of the housing 100 to maintain ventilation and heat dissipation effects at all angles. The housing 100 is also provided with an air inlet 121, which is arranged directly opposite to the fan 250 and is used to supply air to the fan 250. The heat dissipation holes 111 are used to exhaust air to take away heat. The opening sizes of the heat dissipation holes 111 and the air inlet 121 are appropriately enlarged to ensure that the fan 250 can discharge air smoothly and can take away excess heat in time.

[0034] In this embodiment, the shell 100 is provided with connecting ribs 1211 in the air inlet 121, and the multiple connecting ribs 1211 intersect at the center and are connected to the rotating shaft of the fan 250, which can stabilize the installation and operation of the fan 250; the connecting ribs 1211 are arranged radially, which further stabilizes the structure of the shell 100 and avoids weak deformation at the air inlet 121. At the same time, the air inlet 121 can be blocked to a certain extent without affecting the air output as much as possible, so as to prevent the user's hands or other objects from reaching into the air inlet 121 to cause safety hazards and damage the internal structure of the wireless charging device.

[0035] Optionally, the shell 100 includes a base 110 and a back cover 120, the charging module 200 is connected to the base 110 as a whole, the heat dissipation holes 111 and the charging contact positions 112 are both arranged on the base 110, the back cover 120 is detachably connected to the base 110 to enclose the charging module 200, and the air inlet 121 is arranged on the back cover 120, so that the wireless charging device can be disassembled, inspected or assembled in a timely and convenient manner.

[0036] Exemplarily, an input port is provided on the back cover 120, and the input port is electrically connected to the circuit board assembly 240. The charging cable can be inserted into the input port to input current to the circuit board assembly 240. A handle is also provided on the back cover 120, which can facilitate the user to hold the wireless charging device.

[0037] Furthermore, in addition to fixing and wrapping the components of the wireless charging device, the shell 100 can also be used to fix the charged appliance. The wireless charging device also includes a clamping arm assembly 300. The clamping arm assembly 300 includes two single-sided clamping arms 311 that are relatively arranged, and are symmetrically arranged on both sides of the charging contact position 112. The two single-sided clamping arms 311 are used to jointly clamp the charged appliance. The single-sided clamping arms 311 are slidably nested in the shell 100. The single-sided clamping arms 311 are connected to the shell 100 through elastic members. Contact portions 312 are provided on opposite sides of the two single-sided clamping arms 311. The contact portions 312 are made of silicone material, which can prevent slipping when the two single-sided clamping arms 311 clamp the charged appliance.

[0038] It is understandable that a non-slip surface 3121 is provided on a side of the contact portion 312 away from the fixing portion 311 , so as to increase the friction between the charged electrical appliance and the contact portion 312 and prevent the electrical appliance from slipping and flying out.

[0039] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A wireless charging device, characterized in that: include: A housing (100), wherein the housing (100) is provided with a heat dissipation hole (111) and a charging contact position (112), wherein the charging contact position (112) is embedded with a contact sheet (1121), and one side of the contact sheet (1121) is used to fit with a charged electrical appliance; A charging module (200), the charging module (200) being fixedly placed in the housing (100), the charging module (200) comprising a wireless charging coil (210), a thermoelectric cooler (220), a heat sink (230) and a circuit board assembly (240) which are arranged in sequence, the wireless charging coil (210) being bonded to the other side of the contact sheet (1121), and the cooling surface of the thermoelectric cooler (220) being bonded to the wireless charging coil (210).

2. The wireless charging device according to claim 1, characterized in that: The middle part of the circuit board assembly (240) is hollowed out to provide a heat dissipation position, and the charging module (200) further comprises a fan (250), wherein the fan (250) is embedded in the heat dissipation position and connected to the radiator (230).

3. The wireless charging device according to claim 2, characterized in that: The housing (100) is also provided with an air inlet (121), and the air inlet (121) is arranged directly opposite to the fan (250).

4. The wireless charging device according to claim 3, characterized in that: The housing (100) is provided with a connecting rib (1211) in the air inlet (121).

5. The wireless charging device according to claim 3, characterized in that: The housing (100) comprises a base (110) and a back cover (120); the charging module (200) is connected to the base (110); the heat dissipation holes (111) and the charging contact positions (112) are both arranged on the base (110); the back cover (120) is detachably connected to the base (110) to surround the charging module (200); and the air inlet (121) is arranged on the back cover (120).

6. The wireless charging device according to claim 1, characterized in that: The wireless charging device further comprises a clamping arm assembly (300), wherein the clamping arm assembly (300) comprises two single-sided clamping arms (311) arranged opposite to each other, wherein the two single-sided clamping arms (311) are used to clamp the charged electrical appliance together, wherein the single-sided clamping arms (311) are slidably nested in the shell (100), wherein the single-sided clamping arms (311) are connected to the shell (100) via an elastic member, and contact portions (312) are provided on opposite sides of the two single-sided clamping arms (311).

7. The wireless charging device according to claim 6, characterized in that: A non-slip surface (3121) is provided on a side of the contact portion (312) away from the fixing portion (311).

8. The wireless charging device according to any one of claims 1 to 7, characterized in that: The housing (100) is provided with an input port (122), and the input port (122) is electrically connected to the circuit board assembly (240).

9. The wireless charging device according to any one of claims 1 to 7, characterized in that: The contact sheet (1121) is made of heat-conducting material.

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