CN219304519U - Charger (charger) - Google Patents

Abstract

The utility model provides a charger, which comprises a shell and a circuit board assembly, wherein the shell is used for accommodating the circuit board assembly, and is characterized in that a first reinforcing rib is arranged on the inner wall of the shell, a heat insulation pad is arranged on the first reinforcing rib, and a closed cavity is formed between the heat insulation pad and the inner wall of the shell; the circuit board assembly is placed on the insulation pad. In the utility model, the thermal resistance between the circuit board assembly and each surface of the shell is similar, so that the charger has good heat conduction temperature difference and heat transfer efficiency.

Description

Charger (charger)

Technical Field

The utility model relates to the technical field of chargers, in particular to a charger with uniform heat dissipation.

Background

In order to solve the heat dissipation problem of the charger, the technical staff invents a charger of a glue pouring heat storage technology, namely, heat generated by the heating device when the heating device works in a high power short time is absorbed by the heat conducting pouring material through pouring the heat conducting material on the whole or part of the internal device, so that the temperature of the adapter shell is reduced. However, such a glue-pouring charger generally still has a phenomenon that the temperature of the housing at the side close to the circuit board assembly is too high during use, which may affect the use experience of the user.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a charger.

In order to achieve the above and other objects, the present utility model is achieved by the following technical solutions: the charger comprises a shell and a circuit board assembly, wherein the shell is used for accommodating the circuit board assembly, and is characterized in that a first reinforcing rib is arranged on the inner wall of the shell, a heat insulation pad is arranged on the first reinforcing rib, and a closed cavity is formed between the heat insulation pad and the inner wall of the shell; the circuit board assembly is placed on the insulation pad.

In an embodiment, a second reinforcing rib is further arranged on the inner wall of the shell, the second reinforcing rib is located outside the first reinforcing ribs, the setting height of the heat insulation pad is smaller than that of the second reinforcing rib, and a closed cavity is formed between the heat insulation pad, the second reinforcing ribs and the bottom surface of the first shell.

In one embodiment, the insulation pad is a Mylar or other insulating material.

In an embodiment, the height of the first stiffener is smaller than the height of the second stiffener.

In an embodiment, the charger further comprises an input connector and an output connector, wherein the input end of the input connector is electrically connected with an external power supply, the output end of the input connector is electrically connected with the input end of the circuit board assembly, the output end of the circuit board assembly is electrically connected with the input end of the output connector, and the output end of the output connector is electrically connected with an external device to be charged.

In one embodiment, the input connector is an electrical lead with a plug, and the plug of the input connector is a two-pin plug or a three-pin plug.

In one embodiment, the output connector is an electrical lead, and the output end of the output connector is exposed outside the shell.

In one embodiment, the input connector is a pin without an electrical lead, and the pins are two or three.

In one embodiment, the pins are received to the housing.

In an embodiment, the output connector is disposed on a surface of the housing and is a USB interface.

In the utility model, the thermal resistance between the circuit board assembly and each surface of the shell is similar, and the temperature rise is slow, so that the temperature difference of each position of the shell is uniform, the whole charger has good heat conduction temperature difference and heat transfer efficiency, and the heat conduction performance of the charger is effectively improved, so as to meet the requirements of customers on the temperature rise of the shell.

Drawings

Fig. 1 is a schematic structural view of a charger according to the present utility model.

Fig. 2 shows a schematic cross-sectional view in the direction A-A of fig. 1.

Fig. 3 is a schematic perspective view of the second housing of the present utility model.

Detailed Description

Please refer to fig. 1 to 3. Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or adjustments of the sizes, which are otherwise, used in the practice of the utility model, are included in the spirit and scope of the utility model which is otherwise, without departing from the spirit or scope thereof. Also, the terms such as "front", "rear", "upper", "lower", "left", "right", "middle" and "a" and the like are used in this specification for convenience of description, and are not intended to limit the scope of the present utility model, but rather to change or adjust the relative relationship thereof without substantially changing the technical content, and are considered to be within the scope of the present utility model.

As shown in fig. 1 and 2, the present utility model provides a charger 100, and the charger 100 may be an electric car charger. The charger may be a charger of a mobile terminal, for example, a mobile phone charger, or a charger of a large household appliance, a server, a data center, or the like. The charger 100 may include a housing 110, an input connector 120, an output connector 130, and a circuit board assembly 140. The housing 110 is a shell of the charger 100, and is used for accommodating and packaging the input connector 120, the output connector 130 and the circuit board assembly 140, so as to isolate the components from external dust, moisture and the like. The input end of the input connector 120 is electrically connected with an external power supply, the output end of the input connector 120 is electrically connected with the input end of the circuit board assembly 140, the output end of the circuit board assembly 140 is electrically connected with the input end of the output connector 130, and the output end of the output connector 130 is electrically connected with an external device to be charged, so that the external power supply supplies power to the external device to be charged through the charger 100.

It should be noted that, the circuit board assembly 140 is a core component of the charger 100, and may include a circuit board 141 and a plurality of electronic components (not shown) disposed on the circuit board 141, where the electronic components are main heat generating components. Although not shown in the drawings, the electronic component is not affected by understanding the technical scheme of the utility model by those skilled in the art, and implementation of the technical scheme is not affected.

As shown in fig. 2, the housing 110 includes a first housing 111 and a second housing 112, and the first housing 111 is connected with the input connector 120 and the output connector 130 and has a cavity 111a for accommodating the circuit board assembly 140; the second housing 112 is provided to cover the first housing 111 to seal the cavity 111a.

Referring to fig. 2 and 3, a second reinforcing rib 1111 is disposed on the inner wall of the first housing 111, and an accommodating groove 1112 is defined by the second reinforcing rib 1111 and the bottom surface of the first housing 111. Specifically, the second reinforcing rib 1111 may be a closed polygonal ring structure, and a space may be formed between the second reinforcing rib 1111 and each side of the first housing 111, and the space may be used to accommodate the heat conductive glue overflowing the receiving groove 1112. A first reinforcing rib 1113 is disposed on the inner wall of the first housing 111, at least two first reinforcing ribs 1113 are disposed in the accommodating groove 1112, and the height of the first reinforcing rib 1113 may be smaller than the height of the second reinforcing rib 1111; the first reinforcing ribs 1113 are provided with heat insulation pads 1114, the height of the heat insulation pads 1114 is smaller than that of the second reinforcing ribs 1111, the heat insulation pads 1114 are closely arranged on each surface of the accommodating groove 1112, and a closed cavity 1115 is formed between the heat insulation pads 1114 and the bottom surfaces of the second reinforcing ribs 1111 and the first housing 111. The function of the insulating pad 1114 is to prevent the flow of heat conductive glue into the enclosed cavity 1115. The air within the enclosed cavity 1115 may be effective to increase the thermal resistance between the circuit board assembly 140 and the first housing 111. The circuit board assembly 140 is disposed on the heat insulation pad 1114, specifically, the circuit board assembly 140 is placed on the first reinforcing rib 1113 and above the heat insulation pad 1114; glue may be filled into the cavity 111a of the first housing 111 from one side of the second housing 112, so that the space between the circuit board assembly 140 and the housing 110 is filled with the heat-conducting glue, so as to effectively reduce the thermal resistance between the circuit board assembly 140 and the sides of the second housing 112 and the first housing 111.

After the glue is filled, the thermal resistances between the circuit board assembly 140 and the surfaces of the housing 110 are similar, and the temperature rise is slow, so that the temperature difference between the positions of the housing 110 is uniform, and the whole charger 100 has good heat conduction temperature difference and heat transfer efficiency, so that the heat conduction performance of the charger 100 is effectively improved, and the requirement of customers on the temperature rise of the housing is met.

Further, the insulating pad 1114 may be a mylar sheet, or other insulating material.

As shown in fig. 1-3, in some embodiments, the charger 100 may be used as an electric car charger, where the input connector 120 may be an electrical lead with a plug, and the input end of the input connector 120 is exposed outside the housing 110 and electrically connected to an external power source; the output end of the input connector 120 is fixed inside the housing 110 and electrically connected to the circuit board assembly 140, and an external power source can supply power to the circuit board assembly 140 through the input connector 120. It should be noted that the specification of the input connector 120 may be set according to practical applications. For example, the plug of the input connector 120 may be a two-pin plug or a three-pin plug.

The output connector 130 may be an electrical lead, and an input end thereof is fixed inside the housing 110 and electrically connected to the circuit board assembly 140; the output end of the output connector 130 may be exposed outside the housing 110 and connected to an external device to be charged, and the circuit board assembly 140 may be electrically connected to the external device to be charged through the output connector 130.

Specifically, in some embodiments, the input connector 120 and the output connector 130 may be disposed on two opposite surfaces of the housing 110. In other embodiments, the input connector 120 and the output connector 130 may be disposed on two adjacently disposed surfaces of the housing 110.

Although not shown, in other embodiments, the charger 100 may be used as a charger for portable electronic products such as mobile phones. In this case, the input connector 120 may be pins without electrical wires, and the pins may be two pins or three pins. The pins can be accommodated in the housing 110, which is advantageous for accommodating and miniaturizing the charger 100. The output connector 130 may be a USB interface, which may be disposed on the surface of the housing 110 and electrically connected to the circuit board assembly 140, and the USB interface may be connected to a device to be charged. The number of the USB interfaces can be selected according to the actual application requirements, and one or more USB interfaces can be used.

In summary, the electronic component may generate heat during the operation, and the heat may be transferred to the circuit board 141 and the heat-conducting glue around the circuit board 141 by attaching the heat-conducting glue to the circuit board 141, so that the heat-conducting glue between the shell surface far from the circuit board 141 and the circuit board 141 is thicker, and the heat generated by the electronic component may be effectively absorbed, thereby reducing the temperature on the corresponding shell surface; although the heat-conducting glue between the housing surface (i.e., the bottom surface of the first housing 111) closer to the circuit board 141 and the circuit board 141 is thinner, the air in the closed cavity 1115 can effectively increase the thermal resistance due to the addition of the closed cavity 1115, so as to effectively reduce the temperature on the corresponding housing surface. Therefore, the overall temperature rise of the housing 110 of the charger 100 is reduced, which is beneficial to better improving the use experience of the user.

Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value. The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (10)

1. The charger comprises a shell and a circuit board assembly, wherein the shell is used for accommodating the circuit board assembly, and is characterized in that a first reinforcing rib is arranged on the inner wall of the shell, a heat insulation pad is arranged on the first reinforcing rib, and a closed cavity is formed between the heat insulation pad and the inner wall of the shell;

the circuit board assembly is placed on the insulation pad.

2. The charger of claim 1 wherein a second reinforcing rib is further disposed on the inner wall of the housing, the second reinforcing rib is located outside the plurality of first reinforcing ribs, the height of the heat insulating pad is smaller than the height of the second reinforcing rib, and a closed cavity is formed between the heat insulating pad and the second reinforcing rib and the bottom surface of the housing.

3. A charger according to claim 1 or 2, wherein the heat insulating pad is a mailer.

4. A charger according to claim 2, wherein the height of said first rib is less than the height of said second rib.

5. The charger of claim 1 further comprising an input connector and an output connector, wherein the input of the input connector is electrically connected to an external power source, the output of the input connector is electrically connected to the input of the circuit board assembly, the output of the circuit board assembly is electrically connected to the input of the output connector, and the output of the output connector is electrically connected to an external device to be charged.

6. A charger according to claim 5, wherein the input connector is an electrical lead with a plug, and the plug of the input connector is a two-pin plug or a three-pin plug.

7. A charger according to claim 6, wherein said output connector is an electrical lead, and wherein the output end thereof is exposed to the outside of said housing.

8. A charger according to claim 5, wherein said input connector is a pin without electrical conductors, said pins being two or three.

9. The charger of claim 8 wherein said pins are received into said housing.

10. The charger of claim 8 wherein said output connector is provided on a surface of said housing and is a USB interface.

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