Charging base

Abstract

The utility model relates to the technical field of wireless charging, in particular to a charging base. The charging base provided by the utility model comprises a shell and a charging assembly, wherein the charging assembly is arranged in the shell; the cable comprises a core wire, the core wire is connected with the charging assembly, and the cable at least comprises a first extension section located outside the shell; and the liquid cooling film comprises a first part located in the shell and a second part located outside the shell, and the second part is attached to the first extension section of the core wire. The heat dissipation efficiency of the charging base can be improved.

Description

Technical Field

[0001] The present application relates to the field of wireless charging technology, and in particular to a charging base. Background Art

[0002] As electronic devices (e.g., smart wearable devices) become more and more popular, users have increasing requirements for charging electronic devices. Currently, a charging base can be used to wirelessly charge electronic devices so that users can charge their electronic devices anytime and anywhere.

[0003] In order to increase the charging speed, the charging current and duty cycle of the charging base are constantly increasing when charging electronic devices, which is accompanied by an increasingly serious problem of charging heat. In the prior art, the heat dissipation efficiency of the charging base is low. Utility Model Content

[0004] Some embodiments of the present application provide a charging base for improving the heat dissipation efficiency of the charging base.

[0005] The present application provides a charging base, comprising: a shell and a charging component, the charging component is arranged in the shell; a cable, the cable includes a core wire, the core wire is connected to the charging component, and the cable includes at least a first extension section located outside the shell; a liquid cooling film, the liquid cooling film includes a first part located in the shell and a second part located outside the shell, wherein the second part is attached to the first extension section of the core wire.

[0006] According to the embodiments of the present application, the liquid cooling film extends outside the housing, increasing the overall heat dissipation area of ​​the charging base, thereby improving the heat dissipation efficiency of the charging base. Furthermore, the present application utilizes the charging cable as a supporting structure for the liquid cooling film, allowing the liquid cooling film to extend from the inside of the charging base housing to the outside of the housing, thereby improving the heat dissipation efficiency of the charging base without adding additional structure.

[0007] In some embodiments, the core wire is a flat structure, the core wire includes a first surface located at one end in the thickness direction of the core wire, and the second portion of the liquid cooling film is in contact with the first surface.

[0008] In some embodiments, the second portion of the liquid-cooled membrane is helically wound on the core wire.

[0009] In some embodiments, the second portion of the liquid cooling film extends from one end of the first extension segment to the other end of the first extension segment. The embodiments of the present application can further increase the heat dissipation area of ​​the liquid cooling film to further improve the heat dissipation efficiency of the charging base.

[0010] In some embodiments, the cable further includes a protective layer wrapped around the second portion of the liquid-cooling film and the first extension.

[0011] In some embodiments, a transparent window is provided on the protective layer, and the transparent window covers the liquid cooling film. The embodiment of the present application is conducive to observing the flow of the cooling liquid in the liquid cooling film.

[0012] In some embodiments, the charging assembly includes a wireless charging coil, and the first portion of the liquid cooling film is in contact with the wireless charging coil.

[0013] In some embodiments, the housing includes a first sub-housing for contacting the charged device, and a heat-conducting medium is filled between the first sub-housing and the first portion of the liquid cooling membrane. The embodiments of the present application are beneficial for improving the heat dissipation efficiency of the charging base.

[0014] In some embodiments, the charging base further includes a driving unit, which is disposed in the housing and is configured to drive the flow of the cooling liquid in the liquid-cooling film.

[0015] In some embodiments, the thickness of the liquid cooling film is 0.1 mm to 0.5 mm.

[0016] In some embodiments, the width of the liquid cooling film is 5 mm to 40 mm.

[0017] In some embodiments, the material of the liquid cooling membrane includes polyethylene terephthalate, stainless steel, or graphene. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 An exemplary application scenario structure diagram provided for an embodiment of the present application;

[0019] Figure 2A An exemplary structure of a charging base in some embodiments Figure 1 ;

[0020] Figure 2B FIG2 is an exemplary structural diagram of a charging base in some embodiments;

[0021] Figure 3 Exemplary structures of charging bases in other embodiments Figure 3 ;

[0022] Figure 4 Exemplary structure of the charging base provided in the embodiment of the present application Figure 1 (stereoscopic image);

[0023] Figure 5 FIG2 is an exemplary structural diagram of a charging base provided in an embodiment of the present application (exploded view);

[0024] Figure 6 Exemplary structure of the charging base provided in the embodiment of the present application Figure 3 (cross-section view);

[0025] Figure 7An exemplary attachment method of the liquid cooling film and the core wire provided in the embodiment of the present application;

[0026] Figure 8 Another exemplary attachment method of the liquid cooling film and the core wire provided in the embodiment of the present application. DETAILED DESCRIPTION

[0027] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0028] Figure 1 An exemplary application scenario of an embodiment of the present application is shown, specifically a scenario in which the charging base 100 charges an electronic device 200 (eg, a smart wearable device). Figure 1 When the electronic device 200 is placed on the charging base 100, the charging base 100 can wirelessly charge the electronic device 200. In addition, the charging base 100 can also include a cable 30, and the charging base 100 can be connected to an external power source 300 through the cable 30, so that the external power source 300 supplies power to the charging base 100.

[0029] I understand. Figure 1 Although a smart wearable device is used as an example of the electronic device 200, in other embodiments, the electronic device 200 can be a mobile phone, a digital camera, a video camera, a smart watch, a tablet computer, a desktop computer, a laptop computer, a handheld computer, a notebook computer, etc., and this application does not limit this.

[0030] Figure 2A and Figure 2B 1 shows an exemplary structural diagram of the charging base 100 in some embodiments. Figure 2A is a top view of the charging base 100, Figure 2B A cross-sectional view of the charging base 100 (specifically Figure 2A AA cross-section of the ).

[0031] refer to Figure 2A and Figure 2B The charging base 100 includes a housing 10 and a charging assembly 20 located in the housing 10. During the charging process, the charging assembly 20 can exchange electrical energy with the electronic device 200 to charge the electronic device 200.

[0032] During charging, the heat generated by the electronic device 200 is transferred to the interior of the housing 10, and the charging assembly 20 itself also generates heat. Therefore, a large amount of heat is accumulated inside the housing 10, causing the temperature inside the housing 10 to rise, affecting the normal operation of the charging assembly 20.

[0033] To this end, in this embodiment, the material of the housing 10 is set to a material with high thermal conductivity to dissipate heat inside the housing 10. However, since the heat dissipation area of ​​the housing 10 is limited, the heat dissipation efficiency of this solution is low.

[0034] Figure 3 1 shows an exemplary structural diagram of the charging base 100 in some other embodiments. Figure 3 In this embodiment, a liquid cooling film 40 is provided in the housing 10. A liquid cooling channel is formed in the liquid cooling film 40, and the liquid cooling channel is filled with a coolant. Driven by a driving member 50 (e.g., a pump), the coolant can flow in the liquid cooling channel, thereby transferring heat from the bottom wall of the housing to the side wall, and then dissipating the heat through the side wall. The heat dissipation of the charging base 100 is calculated as shown in formula (1):

[0035] Q=kA△T (1)

[0036] Among them, Q represents the heat dissipation of the charging base 100 (W), K represents the heat transfer coefficient (W / m2.K), A represents the heat dissipation area of ​​the charging base 100 (m2), and ΔT represents the temperature difference between the inside and outside of the shell 10 of the charging base 100 (K).

[0037] It can be understood that the cooling liquid in the liquid cooling film 40 only circulates inside the charging base 100, and the overall heat dissipation area A of the charging base 100 does not change. That is, compared with the charging base 100 without the addition of the liquid cooling film 40, Figure 3 The solution shown does not increase the heat dissipation area A and heat transfer coefficient K, and the heat dissipation Q does not increase, so the temperature difference △T will not decrease. Figure 3 In the illustrated solution, the liquid cooling film 40 is provided to only achieve the purpose of equalizing the heat inside the housing 10 .

[0038] To this end, an embodiment of the present application provides a charging base 100, which uses the charging cable 30 of the charging base 100 as a supporting structure for the liquid cooling film 40, so that the liquid cooling film 40 can extend from the inside of the shell 10 of the charging base 100 to the outside of the shell 10, thereby increasing the overall heat dissipation area of ​​the charging base 100 and improving the heat dissipation efficiency of the charging base 100.

[0039] The following describes specific embodiments of the present application with reference to the accompanying drawings. In the various figures herein, the X direction may be the length direction of the charging base 100 and its components, the Y direction may be the width direction of the charging base 100 and its components, and the Z direction may be the thickness direction of the charging base 100 and its components. The X, Y, and Z directions may be perpendicular to each other.

[0040] It is understood that the term "perpendicular" in this application does not necessarily mean absolute perpendicularity. Approximate perpendicularity due to processing errors and assembly errors (for example, an angle of 89.9° between two structural features) is also within the scope of "perpendicular" in this application. The term "parallel" in this application does not necessarily mean absolute parallelism. Approximate parallelism due to processing errors and assembly errors (for example, an angle of 0.1° between two structural features) is also within the scope of "parallel" in this application. The definitions of "parallel" and "perpendicular" will not be repeated below.

[0041] In addition, it should be noted that the directional terms such as "up", "down", "left", "right", "front", "back", "top", and "bottom" in this document are exemplary orientations of the charging base and its components, and do not indicate or imply that the referred components must have a specific orientation. They can change accordingly according to actual usage and cannot be understood as limitations on this application.

[0042] Figures 4 to 6 FIG. 1 shows an exemplary structural diagram of the charging base 100 in this embodiment. Figure 4 is a three-dimensional diagram of the charging base 100, Figure 5 is an exploded view of the charging base 100. Figure 6 A cross-sectional view of the charging base 100 (specifically Figure 4 BB cross-section).

[0043] refer to Figures 4 to 6 The charging base 100 includes a shell 10, a charging component 20, a cable 30, a liquid cooling film 40 and a driving unit 50. The shell 10 forms a accommodating cavity 10a, and the charging component 20 is arranged in the accommodating cavity 10a. That is, the charging component 20 is arranged in the shell 10. The charging component 20 can be fixed to the shell 10 by screws, snaps or other fasteners. The shell 10 includes an upper cover 11 (as a first sub-shell) and a bottom cover 12 arranged opposite to each other along the Z direction. When the charging base 100 charges the electronic device 200, the electronic device 200 can be carried on the upper cover 11 (that is, the electronic device 100 can be in contact with the upper cover 11).

[0044] The charging assembly 20 may include a charging coil 21, a magnet 22, a circuit board 23, and a power module 24. During the charging process, the power module 24 may supply power to the charging coil 21 to generate an alternating current in the charging coil 21. When the alternating current is generated in the charging coil 21, an induced current may be generated in the receiving coil in the electronic device 200 according to the principle of electromagnetic induction, thereby enabling the charging base 100 to charge the electronic device 200. The circuit board 23 may control the charging process of the charging assembly 20, for example, controlling the magnitude of the alternating current in the charging coil 21. The magnet 22 may be arranged inside the coil 21 to enhance the strength of the alternating magnetic field generated by the charging coil 21, thereby improving charging efficiency.

[0045] The cable 30 includes a core wire 31 and a protective layer 32 covering the outside of the core wire 31. The core wire 31 can electrically connect the external power source 300 and the charging component 20 (for example, the power module 24 in the charging component 20). When the cable 30 is connected to the external power source 300, the external power source 300 can supply power to the power module 24 in the charging base 100. The core wire 31 can include an extension section 311 and an extension section 312 (as a first extension section) located in the accommodating cavity. An exit hole 10b can be opened on the shell 10, and the core wire 31 can extend from the inside of the shell 10 to the outside of the shell 10 through the exit hole 10b. The protective layer 32 is covered on the extension section 312 to protect the extension section 312. The protective layer 32 is usually made of a durable material, such as rubber, plastic or other synthetic materials.

[0046] It is understood that in other embodiments, the charging base 100 may include more or fewer components. For example, in other embodiments, the charging base 100 may not include the power module 24, and the cable 30 may be electrically connected to the charging coil 21 to directly power the charging coil 21.

[0047] When the charging base 100 charges the electronic device 200, the heat generated by the electronic device 200 is transferred to the accommodating cavity 10a through the upper cover 11, and the charging assembly 20 itself also generates heat. Therefore, a large amount of heat is accumulated in the accommodating cavity 10a.

[0048] To this end, the charging base 100 of the present embodiment further includes a liquid cooling membrane 40 and a drive unit 50. The liquid cooling membrane 40 has a liquid cooling channel formed therein, which is filled with coolant. The drive unit 50 is used to circulate the coolant within the liquid cooling membrane 40. Specifically, the drive unit 50 may be a water pump, a piezoelectric pump, or the like. Alternatively, the drive unit 50 may be mounted on the liquid cooling membrane 40.

[0049] In this embodiment, the liquid cooling film 40 includes a first portion 41 located in the accommodating cavity 10a and a second portion 42 located outside the shell 10. The liquid cooling film 40 can also extend from the inside of the shell 10 to the outside of the shell 10 via the outlet hole 10b. Driven by the driving unit 50, the cooling liquid can flow from the cooling channel in the first portion 41 to the cooling channel in the second portion 42, that is, the cooling liquid can flow from the inside of the shell 10 to the outside of the shell 10, so as to transfer the heat from the inside of the shell 10 to the outside of the shell 10, and further dissipate it into the air, thereby achieving heat dissipation of the accommodating cavity 10a. In other words, relative to Figure 3 In the solution shown in , by extending the liquid cooling film 40 to the outside of the housing 10 , the overall heat dissipation area of ​​the charging base 100 can be increased, thereby improving the heat dissipation efficiency of the charging base 100 .

[0050] It is understood that by extending the liquid cooling film 40 to the exterior of the housing 10, the present embodiment can overcome the natural heat dissipation limit of the charging base 100 during charging. Under the same temperature control threshold and charging current, the present embodiment can reduce the charging duty cycle and improve charging efficiency.

[0051] Specifically, the liquid-cooling film 40 can be attached to the extension section 312 of the core cable 31. That is, in this embodiment of the present application, the charging cable 30 serves as a support structure for the liquid-cooling film 40, allowing the liquid-cooling film 40 to extend from the interior of the charging base housing 10 to the exterior of the housing 10. This improves the heat dissipation efficiency of the charging base 100 without adding any additional structure. Furthermore, this embodiment, by dissipating heat through the liquid-cooling film 40, facilitates the miniaturization of the charging base 100.

[0052] The following describes how the liquid cooling film 40 is attached to the core wire 31 . Figure 7 Schematically shows a way of attaching the liquid cooling film 40 to the core wire 31. Figure 7 The core wire 31 has a flat structure, that is, the length and width of the core wire 31 are greater than the thickness of the core wire 31. The core wire 31 may include a surface 312a and a surface 312b disposed opposite to each other along the Z-axis. It is understood that the surface 312a and the surface 312b may have rectangular structures. The second portion 42 of the liquid-cooling film 40 may be aligned with the surface 312a to adhere to the core wire 31. Exemplarily, the second portion 42 of the liquid-cooling film 40 may be fixedly connected to (e.g., bonded to) the surface 312a.

[0053] Figure 8 Another attachment method of the liquid cooling film 40 on the core wire 31 is shown as an example. Figure 8 The second portion 42 of the liquid cooling film 40 is spirally wound on the surface of the core wire 31 . This method can increase the length and heat dissipation area of ​​the second portion 42 of the liquid cooling film 40 , thereby increasing the heat dissipation efficiency of the charging base 100 .

[0054] For example, the thickness of the liquid cooling film 40 can be 0.1 mm to 0.5 mm, for example, 0.1 mm, 0.2 mm, etc. The width of the liquid cooling film 40 can be 5 mm to 40 mm, for example, 10 mm, 20 mm, etc. In addition, the material of the liquid cooling film 40 can include polyethylene terephthalate (PET), stainless steel, or graphene.

[0055] Continue to refer Figure 6 The protective layer 32 of the cable 30 can be wrapped around the second portion 42 of the liquid-cooling film 40 and the extension section 312 of the core wire 31 to protect the liquid-cooling film 40 and the core wire 31. Furthermore, a transparent window 321 can be provided on the protective layer 32, covering the liquid-cooling film 40. This allows a user to observe the flow of liquid in the liquid-cooling film 40 through the transparent window 321. In this embodiment of the present application, the transparent window 321 can be formed by opening a through hole in the protective layer 32, or by forming a portion of the protective layer 32 with a light-transmitting material (e.g., a transparent film) to form the transparent window 321.

[0056] Furthermore, the second portion 42 of the liquid-cooling film 40 can extend from one end 312a to the other end 312b of the extension section 312 of the core wire 31, thereby maximizing the heat dissipation area of ​​the second portion 42 of the liquid-cooling film 40. For example, the length of the second portion 42 of the liquid-cooling film 40 can be 0.8 to 1 times the length of the extension section 312 of the core wire 31, for example, 0.95 times.

[0057] In addition, a heat-conducting medium (not shown) may be filled between the upper cover 11 of the housing 10 and the first portion 41 of the liquid-cooling film 40, thereby improving the heat conduction efficiency between the upper cover 11 and the liquid-cooling film 40 and facilitating the rapid transfer of heat through the liquid-cooling film 40 to the outside of the housing 10. The heat-conducting medium may be thermal grease, thermal adhesive, etc., and is not limited in this application.

[0058] In the above description of this embodiment, unless otherwise specified, " / " represents or. For example, A / B can identify either A or B. "And / or" in this document simply describes an association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the existence of A alone, B alone, or both A and B. Furthermore, in this embodiment, the values ​​of each data range include the end values. For example, A=10-50 means that A can be 10 or 50.

Claims

1. A charging base, characterized in that: include: a housing and a charging assembly, wherein the charging assembly is disposed in the housing; a cable, the cable comprising a core wire connected to the charging assembly, the cable comprising at least a first extension section located outside the housing; A liquid-cooling film comprises a first portion located inside the shell and a second portion located outside the shell, wherein the second portion is attached to the first extension section of the core wire.

2. The charging base according to claim 1, characterized in that: The core wire is a flat structure and includes a first surface located at one end in a thickness direction of the core wire. The second portion of the liquid cooling film is in contact with the first surface.

3. The charging base according to claim 1, characterized in that: The second portion of the liquid cooling film is spirally wound on the core wire.

4. The charging base according to claim 1, characterized in that: The second portion of the liquid-cooling film extends from one end of the first extending section to the other end of the first extending section.

5. The charging base according to claim 1, characterized in that: The cable further includes a protective layer wrapped around the second portion of the liquid-cooling film and the outside of the first extension section.

6. The charging base according to claim 5, characterized in that: A transparent window is provided on the protective layer, and the transparent window covers the liquid cooling film.

7. The charging base according to claim 1, characterized in that: The charging component includes a wireless charging coil, and the first portion of the liquid cooling film is in contact with the wireless charging coil.

8. The charging base according to claim 1, characterized in that: The housing includes a first sub-housing for contacting a charged device, and a heat-conducting medium is filled between the first sub-housing and the first portion of the liquid-cooling film.

9. The charging base according to claim 1, characterized in that: The charging base further includes a driving unit, which is disposed in the shell and is used to drive the cooling liquid in the liquid cooling film to flow.

10. The charging base according to any one of claims 1 to 9, characterized in that: The thickness of the liquid cooling film is 0.1 mm to 0.5 mm; the width of the liquid cooling film is 5 mm to 40 mm; or the material of the liquid cooling film includes polyethylene terephthalate, stainless steel or graphene.

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