Charger

Abstract

The utility model discloses a charger, which belongs to the technical field of charging devices and is designed for solving the problems of poor heat dissipation effect of a high-power charger and the like in the conventional glue pouring heat dissipation method. The charger disclosed by the utility model comprises a heating element; the heating element is arranged in the insulating inner shell, and an opening is formed in the insulating inner shell; the heat dissipation piece is arranged outside the insulating inner shell; and the heat conduction piece is connected between the heat dissipation piece and at least part of the heating piece through the opening, and the heat conduction piece is used for conducting heat on at least part of the heating piece to the heat dissipation piece located outside the insulating inner shell. According to the charger disclosed by the utility model, the heat conduction piece can conduct heat on the heating piece to the heat dissipation piece, the area of the heat dissipation piece is larger, the heat dissipation efficiency is higher, the assembly is simple and convenient, glue filling is not needed, the shell closing is not needed after glue is dried, the assembly efficiency is high, and the charger is suitable for various chargers, especially chargers with small volume and large power.

Description

Technical Field

[0001] The utility model relates to the technical field of charging devices, in particular to a charger. Background Art

[0002] A charger is a device used to provide power to electronic products such as mobile phones. In order to complete charging faster and have more power, a high-power charger is needed. In order to be easy to carry and use, the charger needs to be smaller in size.

[0003] The charger generates heat when working, and failure to dissipate heat in time will affect the charging effect. Existing miniaturized chargers usually use a glue filling method to dissipate heat. Specifically, a material with good thermal conductivity is poured into the charger shell. The heat dissipation material can transfer the heat generated by the heating element in the charger to a low-temperature location (such as the shell) to achieve heat dissipation.

[0004] The defects of the existing heat dissipation methods include: when the power of the charger is large (240W and above), the heat dissipation effect of the glue filling method is poor, the heat dissipation speed is slow, and it is difficult to reduce the charger to the set range in a short time. Utility Model Content

[0005] The utility model aims to provide a charger, which solves the problem of poor heat dissipation effect when the existing glue-filling heat dissipation method is used to dissipate heat for high-power chargers.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A charger, comprising: a heating element; an insulating inner shell, wherein the heating element is arranged in the insulating inner shell, and an opening is arranged on the insulating inner shell; a heat sink, which is arranged outside the insulating inner shell; and a heat conductor, which is connected between the heat sink and at least part of the heating element through the opening, and the heat conductor is used to conduct heat from at least part of the heating element to the heat sink located outside the insulating inner shell.

[0008] In one preferred embodiment, the heat sink comprises a first metal sheet, and the first metal sheet at least partially covers a portion of the heat conductive member that is exposed from the insulating inner shell.

[0009] In one preferred embodiment, the heat sink further includes a second metal sheet, and the first metal sheet and the second metal sheet are respectively attached to opposite sides of the insulating inner shell.

[0010] In one of the preferred embodiments, the sum of the areas of the first metal sheet and the second metal sheet is greater than or equal to the side area of ​​the insulating inner shell.

[0011] In one of the preferred embodiments, buckles are respectively provided on the first metal sheet and the second metal sheet, and after the first metal sheet and the second metal sheet are respectively attached to opposite sides of the insulating inner shell, the buckles can prevent the first metal sheet and the second metal sheet from separating.

[0012] In one preferred embodiment, the first metal sheet and the second metal sheet are respectively provided with avoidance openings, and the avoidance openings are at least partially aligned with the openings.

[0013] In one preferred embodiment, the area of ​​the other end of the heat conducting member located outside the insulating inner shell is larger than the area of ​​the one end located inside the insulating inner shell.

[0014] In one of the preferred embodiments, the charger also includes a heat-distributing insulating member and an outer shell, wherein the outer shell is sleeved on the outside of the overall structure consisting of the heat-generating member, the insulating inner shell, the heat-dissipating member and the heat-conducting member, and the heat-dissipating insulating member is arranged between the heat-dissipating member and the outer shell.

[0015] In one of the preferred embodiments, the heat-isolating and heat-insulating member is a sheet structure made of graphene.

[0016] In one of the preferred embodiments, the heating element includes an inductor and a transformer, and the charger includes two heat-conducting elements that are independent of each other and spaced apart, wherein one of the heat-conducting elements contacts the inductor, and the other heat-conducting element contacts the transformer.

[0017] The charger disclosed by the utility model comprises a heat sink and a heat conductor. The heat conductor can conduct heat from a heating element in an insulating inner shell to the heat sink outside the insulating inner shell. The heat sink has a larger area, higher heat dissipation efficiency, and is easier to assemble. There is no need to fill glue or wait for the glue to dry before closing the shell. The assembly efficiency is high and the charger is suitable for various chargers, especially for chargers with small size and high power. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a charger provided by a specific embodiment of the utility model;

[0019] Figure 2 It is an exploded view of a charger provided in a specific embodiment of the utility model;

[0020] Figure 3 It is a schematic diagram of the structure when preparing to assemble the heat conducting member provided by the specific embodiment of the utility model;

[0021] Figure 4 It is a schematic diagram of the structure of the heat conducting member after being assembled provided by the specific embodiment of the utility model;

[0022] Figure 5 It is a structural schematic diagram of a first metal sheet and a second metal sheet ready to be assembled provided by a specific embodiment of the utility model;

[0023] Figure 6 It is a schematic diagram of the structure after the first metal sheet and the second metal sheet are assembled according to a specific embodiment of the utility model;

[0024] Figure 7 It is a schematic diagram of the structure when preparing to assemble the heat-equalizing and heat-insulating member provided in a specific embodiment of the utility model;

[0025] Figure 8 It is a schematic diagram of the structure of the heat-dissipating and heat-insulating component after assembly provided by the specific implementation mode of the utility model;

[0026] Fig. 9 It is a structural schematic diagram of the specific implementation mode of the utility model when preparing to assemble the housing, the silicone pad, the digital tube and the lens.

[0027] In the figure:

[0028] 1. Inductor; 2. Transformer; 3. Insulating inner shell; 5. Heat conducting part; 6. Heat dissipating and insulating part; 7. Outer shell; 31. Opening; 41. First metal sheet; 42. Second metal sheet; 43. Fastener; 44. Avoidance; 81. Power cord; 82. PCB assembly; 83. Digital tube; 84. Lens; 85. Side cover; 86. Silicone pad. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model. Therefore, the utility model is not limited by the specific implementation methods disclosed below.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0035] This embodiment discloses a charger for supplying power to various computer, communication and consumer electronic products (also referred to as 3C products). Figure 1 and Figure 2As shown, the charger includes a heating element, an insulating inner shell 3, a heat sink, a heat conducting element 5, a heat-dissipating and heat-insulating element 6, an outer shell 7, a power cord 81, a PCB assembly 82, a digital tube 83, a lens 84, a side cover 85 and a silicone pad 86, wherein the power cord 81 connects a plug (not shown) to the PCB assembly 82, the inductor 1 and the transformer 2 are respectively connected to the PCB assembly 82, the inductor 1, the transformer 2 and the PCB assembly 82 are assembled and arranged together in the insulating inner shell 3, and the heat sink is arranged outside the insulating inner shell 3. The heating element may be, but is not limited to, the inductor 1 and the transformer 2, and any device that can generate heat may be included therein. In this embodiment, the inductor 1 and the transformer 2 are used as the heating element for illustration.

[0036] like Figure 3 and Figure 4 As shown, an opening 31 is provided on the insulating inner shell 3, and one end of the heat conductor 5 passes through the opening 31 and contacts the inductor 1 and / or the transformer 2, and the other end passes through the opening 31 and contacts the heat sink. After contact, the heat conductor 5 can conduct the heat on the inductor 1 and / or the transformer 2 to the heat sink located outside the insulating inner shell 3, and the heat dissipation efficiency is high. In this embodiment, the inductor 1 and the transformer 2 are both in contact with the heat conductor 5 to achieve heat conduction, so that the high temperature generated on the inductor 1 and the transformer 2 can be conducted away as quickly as possible, avoiding abnormal operation of the inductor 1 and the transformer 2 due to high temperature. In addition, in this embodiment, the area of ​​the heat sink is larger than the area of ​​the heat conductor 5, which further improves the heat dissipation efficiency.

[0037] Compared with the existing glue-pouring heat dissipation method, the method of using the heat-conducting member 5 to lead the temperature inside the insulating inner shell 3 to the outside of the insulating inner shell 3 and using a large-area heat dissipation member for heat dissipation is easier to assemble, does not require glue pouring, does not need to wait for the glue to dry before closing the shell, has high assembly efficiency, is suitable for various chargers, especially for small-sized and high-power (240W or above) chargers, and the temperature of the charger surface can be maintained within a safe range.

[0038] The specific shape of the heat conductor 5 is not limited, as long as it can lead the temperature of the inductor 1 and / or transformer 2 to the heat sink outside the insulating inner shell 3. In this embodiment, the heat conductor 5 is made of a U-shaped metal sheet, making full use of the good thermal conductivity of the metal. The specific metal material for preparing the heat conductor 5 is not limited, and copper is preferred, which has good thermal conductivity, is not easily deformed and chemically reacted in a high temperature environment, and is safer to use.

[0039] The wall surface of the insulating inner shell 3 is provided with an opening 31, and the inductor 1 and the transformer 2 are arranged near the opening 31. One end of the U-shaped heat-conducting member 5 is inserted into the insulating inner shell 3 through the opening 31 and can contact the inductor 1 and the transformer 2. In addition to allowing the end of the heat-conducting member 5 to be inserted, the opening 31 is also used to allow the PCB assembly 82 (such as Figure 2) connected to the digital tube 83 (as shown) outside the insulating inner shell 3 Figure 2 The structure shown in the figure does not affect the normal operation of other structures of the charger, the connection method is simpler, and the assembly efficiency is high.

[0040] The specific connection method of the heat conductor 5 with the inductor 1 and the transformer 2 is not limited, as long as the end of the heat conductor 5 is attached to the inductor 1 and the transformer 2, heat conduction can be achieved. In this embodiment, in order to save the processing material of the heat conductor 5 and to minimize the increase in the volume of the charger, one end of the U-shaped heat conductor 5 is inserted between the upper surface of the inductor 1 and the inner wall of the insulating inner shell 3, and between the upper surface of the transformer 2 and the inner wall of the insulating inner shell 3. Of course, one end of the heat conductor 5 is fixedly connected to the inductor 1 and the transformer 2 by welding, clamping or riveting, so that the heat conductor 5 can maintain stable contact with the inductor 1 and the transformer 2 when the charger is shaken violently, and the heat dissipation effect is better and the failure rate is low.

[0041] The other end of the U-shaped heat-conducting member 5 is attached to the outer surface of the insulating inner shell 3, and the heat sink is attached to the outer surface of the insulating inner shell 3 and covers the other end of the heat-conducting member 5. That is, the other end of the U-shaped heat-conducting member 5 is at least partially inserted between the outer surface of the insulating inner shell 3 and the heat sink, and the heat sink can fix the other end of the heat-conducting member 5 to prevent the other end of the heat-conducting member 5 from being separated from the outer surface of the insulating inner shell 3.

[0042] In this embodiment, the area of ​​one end located inside the insulating inner shell 3 is relatively small, and it only needs to be in full contact with the inductor 1 and the transformer 2, thereby obtaining good thermal conductivity while avoiding interference with surrounding devices and occupying as little space inside the insulating inner shell 3 as possible, which is conducive to the miniaturization design of the charger; the area of ​​the other end of the heat conductor 5 located outside the insulating inner shell 3 is relatively large, and the contact area with the heat sink is larger, and the thermal conductivity efficiency is high.

[0043] In order to improve the safety of use, the charger includes two independent and spaced-apart heat-conducting parts 5 , one of which contacts the inductor 1 and the other contacts the transformer 2 , so as to avoid heat conduction and electrical conduction between the inductor 1 and the transformer 2 .

[0044] The specific structure and material of the heat sink are not limited, as long as they can fully dissipate heat. Figure 2 , Figure 5 and Figure 6As shown, the heat sink includes a first metal sheet 41 and a second metal sheet 42, wherein the first metal sheet 41 at least partially covers the portion of the heat conductor 5 that is exposed from the insulating inner shell 3, thereby improving the thermal conductivity efficiency; the first metal sheet 41 and the second metal sheet 42 are respectively attached to opposite sides of the insulating inner shell 3. The good thermal conductivity of metal is utilized for heat dissipation, and the heat dissipation efficiency is high. Within the range permitted by processing accuracy and manufacturing cost, the first metal sheet 41 strives to cover the entire structure of the heat conductor 5 that is exposed from the insulating inner shell 3, and the thermal conductivity effect is better. In this embodiment, the sum of the areas of the first metal sheet 41 and the second metal sheet 42 is ≥ the side area of ​​the insulating inner shell 3, that is, the first metal sheet 41 and the second metal sheet 42 completely cover the side of the insulating inner shell 3, and the thermal conductivity is more sufficient.

[0045] Specifically, the first metal sheet 41 and the second metal sheet 42 are both made of copper sheets, which have good ductility and are easy to be processed into thin sheets. While ensuring the heat dissipation performance, the thickness of the charger will not be significantly increased, and the advantages of small size are maintained. It is easy to carry and does not take up space, and the product is more competitive. Of course, in other embodiments, the number of metal sheets constituting the heat sink can be increased according to demand, for example, it is set to four metal sheets, and the four metal sheets are connected end to end to form a heat sink with a cylindrical structure.

[0046] On the basis of the above structure, in order not to hinder the connection between the PCB assembly 82 located in the insulating inner shell 3 and the digital tube 83 and other structures outside the insulating inner shell 3, avoidance openings 44 are respectively provided on the first metal sheet 41 and the second metal sheet 42, and the avoidance openings 44 are at least partially aligned with the opening 31.

[0047] Specifically, the first metal sheet 41 includes a sheet-shaped main body and side edges formed by bending along both sides of the main body, and a notch is provided on one side of the side edge, and the notch is the avoidance opening 44. The shape of the second metal sheet 42 is substantially the same as that of the first metal sheet 41, and it is sufficient to ensure that the avoidance opening 44 on the first metal sheet 41 and the avoidance opening 44 on the second metal sheet 42 are located on the same side and substantially aligned after installation. In this embodiment, the entire opening structure composed of the avoidance opening 44 on the first metal sheet 41 and the avoidance opening 44 on the second metal sheet 42 is slightly larger than the opening 31 and is sleeved on the outer periphery of the opening 31.

[0048] In order to stably sleeve the heat sink on the outer periphery of the insulating inner shell 3, buckling parts 43 are respectively provided on the first metal sheet 41 and the second metal sheet 42. After the first metal sheet 41 and the second metal sheet 42 are respectively attached to the opposite sides of the insulating inner shell 3, the buckling parts 43 on the first metal sheet 41 and the buckling parts 43 on the second metal sheet 42 are buckled together, thereby preventing the first metal sheet 41 and the second metal sheet 42 from separating.

[0049] The specific shape of the fastening piece 43 is not limited, and any structure that can achieve fastening in the prior art can be used. In the present embodiment, the fastening piece 43 can be a matching bump and through hole. After the bump is inserted into the through hole, the interface is snap-fitted, which is convenient to use and has high disassembly and assembly efficiency. Specifically, the fastening piece 43 on one of the first metal sheet 41 and the second metal sheet 42 is a bump, and the fastening piece 43 on the other of the first metal sheet 41 and the second metal sheet 42 is a through hole. After the bump and the through hole are fastened together, the first metal sheet 41 and the second metal sheet 42 can be stably connected together. Of course, in addition to using the fastening piece 43 to achieve a detachable connection, the first metal sheet 41 and the second metal sheet 42 can also use other forms of connection methods, such as connector connection, magnetic attraction, etc.

[0050] Based on the above structure, Figures 7 to 9 As shown, the charger further includes a heat-distributing and heat-insulating member 6 and a shell 7. The shell 7 is sleeved on the outside of the overall structure consisting of the inductor 1, the transformer 2, the insulating inner shell 3, the heat sink and the heat-conducting member 5, and the heat-distributing and heat-insulating member 6 is arranged between the heat sink and the shell 7.

[0051] When assembling, Figure 3 and Figure 4 As shown, firstly, two heat-conducting members 5 are respectively contacted with the inductor 1 and the transformer 2; Figure 5 and Figure 6 As shown, the first metal sheet 41 and the second metal sheet 42 are respectively covered on the upper and lower sides of the insulating inner shell 3; Figure 7 and Figure 8 As shown, two thermal insulation members 6 are respectively covered on the outside of the first metal sheet 41 and the second metal sheet 42, and the outer shell 7 is sleeved on the outside of the above-mentioned overall structure; Fig. 9 As shown, the silicone pad 86 is connected to one side of the housing 7, and the digital tube 83 and the lens 84 are connected to the other side of the housing 7 in sequence to complete the assembly.

[0052] The specific material of the shell 7 is not limited. In this embodiment, the shell 7 is made of plastic, which has the advantages of light weight, good hand feel, and various shapes. The specific material of the heat-dissipating and heat-insulating member 6 is not limited. In this embodiment, the heat-dissipating and heat-insulating member 6 is made of graphene and is in sheet form, which can help the heat on the first metal sheet 41 and the second metal sheet 42 to be evenly distributed and improve the heat dissipation efficiency; it can also prevent the heat on the first metal sheet 41 and the second metal sheet 42 from being directly transferred to the shell 7. The shell 7 can help the first metal sheet 41 and the second metal sheet 42 to dissipate heat but will not overheat the shell 7, avoiding scalding the user and making it safer to use.

[0053] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, but may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A charger, characterized in that: include: Heating element; An insulating inner shell (3), the heating element being arranged in the insulating inner shell (3), and an opening (31) being arranged on the insulating inner shell (3); A heat sink, arranged outside the insulating inner shell (3); as well as, A heat-conducting member (5) is connected between the heat-dissipating member and at least a portion of the heat-generating member through the opening (31); the heat-conducting member (5) is used to conduct heat from at least a portion of the heat-generating member to the heat-dissipating member.

2. The charger according to claim 1, characterized in that: The heat sink comprises a first metal sheet (41), wherein the first metal sheet (41) at least partially covers a portion of the heat conducting member (5) that is exposed from the insulating inner shell (3).

3. The charger according to claim 2, characterized in that: The heat sink also includes a second metal sheet (42), and the first metal sheet (41) and the second metal sheet (42) are respectively attached to opposite sides of the insulating inner shell (3).

4. The charger according to claim 3, characterized in that: The sum of the areas of the first metal sheet (41) and the second metal sheet (42) is greater than or equal to the side area of ​​the insulating inner shell (3).

5. The charger according to claim 3, characterized in that: The first metal sheet (41) and the second metal sheet (42) are respectively provided with fastening parts (43); after the first metal sheet (41) and the second metal sheet (42) are respectively attached to opposite sides of the insulating inner shell (3), the fastening parts (43) can prevent the first metal sheet (41) and the second metal sheet (42) from separating.

6. The charger according to claim 1, characterized in that: The heat sink is provided with a relief opening (44), and the relief opening (44) is at least partially aligned with the opening (31).

7. The charger according to claim 1, characterized in that: The area of ​​the other end of the heat conducting member (5) located outside the insulating inner shell (3) is larger than the area of ​​the one end located inside the insulating inner shell (3).

8. The charger according to any one of claims 1 to 7, characterized in that: The charger further comprises a heat-distributing insulating member (6) and an outer shell (7), wherein the outer shell (7) is sleeved on the outer side of an integral structure consisting of the heating member, the insulating inner shell (3), the heat dissipating member and the heat conducting member (5), and the heat-dissipating insulating member (6) is arranged between the heat dissipating member and the outer shell (7).

9. The charger according to claim 8, characterized in that: The heat-isolating and heat-insulating member (6) is a sheet-like structure made of graphene.

10. The charger according to any one of claims 1 to 7, characterized in that: The heating element comprises an inductor (1) and a transformer (2), and the charger comprises two heat-conducting elements (5) which are independent of each other and arranged at an interval, wherein one of the heat-conducting elements (5) contacts the inductor (1) and the other heat-conducting element (5) contacts the transformer (2).

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