WO2025140354A1 - Charging device - Google Patents

Abstract

Provided in the embodiments of the present application is a charging device. The charging device comprises: a housing, which has an inner cavity and a mounting hole in communication with the inner cavity; a heat exchange assembly, a first portion of the heat exchange assembly being located in the inner cavity, and a second portion of the heat exchange assembly extending out of the inner cavity through the mounting hole; an internal electronic component, which is arranged in the inner cavity and is in thermally conductive connection with the first portion of the heat exchange assembly; and pins, which are connected to the second portion of the heat exchange assembly, one end of each pin being electrically connected to the internal electronic component in the inner cavity, and the opposite end thereof passing through the second portion to extend out of the inner cavity. The charging device provided in the embodiments of the present application can ensure good heat dissipation of the internal electronic component in the charging device while avoiding the problem of hand scalding.

Description

Charging device Technical Field

The present application relates to the field of electronic product accessories, and in particular to a charging device.

Background Art

Electronic products such as mobile phones, tablets, and computers usually need to be charged through charging devices such as power adapters. As people's requirements for charging speed change, fast charging technology has gradually matured. However, the temperature of charging devices with fast charging functions is too high when working. Existing charging devices usually direct the heat of internal electronic components to various surfaces of the charging device, but this causes the temperature of the entire casing to be high, and users will feel hot when unplugging the charging device from the socket after charging.

Therefore, how to ensure good heat dissipation of the electronic components inside the charging device while avoiding the problem of being burned has become an urgent problem to be solved.

Summary of the invention

Therefore, in order to overcome at least some of the defects and shortcomings in the prior art, an embodiment of the present application provides a charging device that can ensure good heat dissipation of electronic components inside the charging device while avoiding the problem of being scalded.

Specifically, on the one hand, an embodiment of the present application provides a charging device, comprising: a shell, the shell having an inner cavity and a mounting hole connected to the inner cavity; a heat exchange assembly, a first portion of the heat exchange assembly being located in the inner cavity, and a second portion extending out of the inner cavity through the mounting hole; an internal electronic device, disposed in the inner cavity and thermally connected to the first portion of the heat exchange assembly; a pin, connected to the second portion of the heat exchange assembly, one end of the pin being electrically connected to the internal electronic device in the inner cavity, and the other end thereof extending out of the inner cavity through the second portion.

In some embodiments, the second part of the heat exchange component includes a bottom shell, which is disposed in the mounting hole and seals the inner cavity, a surface of the bottom shell facing away from the shell body is exposed outside the inner cavity, and the pins pass through the bottom shell.

In some embodiments, the first portion includes a thermally conductive support, the thermally conductive support is disposed within the inner cavity, and the thermally conductive support supports the internal electronic device.

In some embodiments, one end of the thermally conductive bracket close to the bottom shell is connected to the middle portion of the bottom shell.

In some embodiments, the internal electronic device includes a first circuit board and a second circuit board, the first circuit board and the second circuit board are perpendicular to each other, and at least one of the first circuit board and the second circuit board is connected to the thermally conductive bracket.

In some embodiments, the internal electronic device includes a target heat dissipation device, the first part includes a thermally conductive extension portion, the thermally conductive extension portion extends from a side of the bottom shell close to the inner cavity toward the inner cavity, and the thermally conductive extension portion is thermally connected to the target heat dissipation device.

In some embodiments, there are multiple target heat dissipation devices, and the heat conductive extension portion extends to at least one target heat dissipation device among the multiple target heat dissipation devices.

In some embodiments, the plurality of target heat dissipation devices include a rectifier chip, and the heat conductive extension portion includes a first extension portion, and the first extension portion extends to the rectifier chip.

In some embodiments, the plurality of target heat dissipation devices include a filter device and a transformer, and the heat conductive extension portion includes a second extension portion, and the second extension portion extends between the filter device and the transformer.

In some embodiments, the bottom case is made of an insulating material with high thermal conductivity; and/or the first portion includes a metal member and an insulating member, and the insulating member insulates the metal member from the internal electronic device.

In some embodiments, a plurality of fins are disposed on a surface of the bottom shell away from the inner cavity, and the plurality of fins are spaced apart from each other.

In some embodiments, a connection hole is provided on a side of the shell facing away from the mounting hole, the internal electronic device includes an electrical connector provided corresponding to the connection hole, and an external connector can be connected to the electrical connector through the connection hole.

In some embodiments, the shell includes an outer shell and an inner shell, the inner shell is arranged around the mounting hole, and the heat exchange component also includes a thermally conductive extension portion extending from the second portion toward the inner cavity, and the thermally conductive extension portion contacts the inner shell.

On the other hand, an embodiment of the present application provides another charging device, comprising: a shell having an inner cavity, wherein the inner cavity is provided with an internal electronic device; a bottom shell connected to the shell, wherein the bottom shell is provided with pins electrically connected to the internal electronic device; a heat-conductive bracket located in the inner cavity, and wherein the heat-conductive bracket is thermally conductively connected to the internal electronic device and the bottom shell respectively.

In some embodiments, a first extension portion is provided on the thermally conductive bracket, the internal electronic device includes a target heat dissipation device, the first extension portion extends toward the target heat dissipation device, and the first extension portion is thermally conductively connected to the target heat dissipation device.

In some embodiments, the target heat dissipation device includes a first circuit board and a rectifier chip, the first circuit board is connected to the bottom shell, the rectifier chip is arranged on the first circuit board, and the first extension portion is thermally connected to the rectifier chip.

In some embodiments, the rectifier chip is disposed on a side of the first circuit board close to the inner wall of the housing, and the first extension portion extends to the rectifier chip and is in contact with and connected to the rectifier chip.

In some embodiments, the target heat dissipation device also includes a second circuit board and a filter device, the second circuit board is connected to the first circuit board; the filter device is arranged on the second circuit board, and the thermal conductive bracket is also provided with a second extension portion, and the second extension portion extends to the outer surface of the filter device.

In some embodiments, the filter device includes a first capacitor and a second capacitor, and the thermally conductive bracket further includes a third extending portion, and the third extending portion extends from the second extending portion to between the first capacitor and the second capacitor.

In some embodiments, the thermally conductive bracket includes a first end surface close to the bottom shell, the bottom shell includes a second end surface corresponding to the first end surface, and the first end surface is in contact with and connected to the second end surface.

In some embodiments, a protrusion is provided on the thermally conductive bracket, the protrusion is provided on the first end surface and protrudes toward the bottom shell, a groove is correspondingly provided on the second end surface, and the protrusion is connected to the groove.

In some embodiments, the thermally conductive bracket is an annular structure; and/or the thermally conductive bracket and the bottom shell are separate structures.

In some embodiments, a fixing bracket is disposed on one side of the bottom shell close to the inner cavity, one end of the pin is connected to the fixing bracket, and the other end extends through the bottom shell and is exposed on a side of the bottom shell away from the heat conductive bracket.

As can be seen from the above, on the one hand, in the charging device provided in the embodiment of the present application, the first part of the heat exchange component is thermally connected to the internal electronic device through the first part and then is conducted out of the inner cavity through the second part, and the pin is inserted into the second part. Therefore, when the charging device is plugged into the socket, the heat exchange component is the part of the charging device close to the socket. Therefore, after charging is completed, people will not touch the second part when unplugging the charging device from the socket. Therefore, the above arrangement makes it possible to conduct the heat of the internal electronic device while preventing burns; on the other hand, in the charging device provided in the embodiment of the present application, the heat is thermally connected to the internal electronic device in the shell through a heat conductive bracket, and the heat conductive bracket is arranged in the inner cavity of the shell. After the heat conductive bracket is thermally connected to the internal electronic device, the heat is conducted out of the inner cavity through the bottom shell, so that the heat of the internal electronic device can be conducted from the inner cavity toward the bottom shell to the outside of the inner cavity, which can further solve the problem of unsatisfactory heat dissipation effect on the basis of miniaturization of the charging device.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

FIG1 is a schematic diagram of the structure of a charging device provided in one embodiment of the present application.

FIG. 2 is a schematic diagram of the exploded structure of the charging device shown in FIG. 1 .

FIG. 3 is a schematic diagram of the exploded structure of the internal electronic components in the charging device shown in FIG. 1 .

FIG. 4 is a side view of the charging device shown in FIG. 1 with the outer shell removed.

FIG. 5 is a schematic structural diagram of the charging device shown in FIG. 1 from another angle.

FIG. 6 is a partial enlarged schematic diagram of area A in FIG. 5 .

FIG. 7 is a schematic structural diagram of the charging device shown in FIG. 1 in another direction.

FIG. 8 is a schematic diagram of the exploded structure of the charging device shown in FIG. 7 .

FIG. 9 is a schematic diagram of the structure of a charging device provided in another embodiment of the present application.

FIG. 10 is a schematic diagram of the exploded structure of the charging device shown in FIG. 9 .

FIG. 11 is a schematic structural diagram of internal electronic components and a heat-conducting bracket in the charging device shown in FIG. 9 .

FIG. 12 is an exploded schematic diagram of the internal electronic components and the thermally conductive bracket shown in FIG. 11 .

FIG. 13 is an exploded schematic diagram of the bottom case and the heat-conducting bracket in the charging device shown in FIG. 9 .

FIG. 14 is a schematic structural diagram of the heat-conducting bracket in the charging device shown in FIG. 9 .

FIG15 is a schematic cross-sectional view of the charging device shown in FIG9 with the shell portion removed.

FIG16 is another cross-sectional schematic diagram of the charging device shown in FIG9 with the shell portion removed.

[Description of Reference Numerals]
100, charging device; 10, shell; 12, outer shell; 13, inner cavity; 14, inner shell; 15, mounting hole; 16, connecting hole; 17, fixing bracket; 20, internal electronic device; 21, target heat dissipation device; 211, rectifier chip; 212, transformer; 213, filter device; 2131, first capacitor; 2132, second capacitor; 22, first circuit board; 23, second circuit board; 24, electrical connector; 30, pin; 40, heat exchange component; 41, thermally conductive bracket; 4101, first end face; 42, thermally conductive extension portion; 421, first extension portion; 422, second extension portion; 423, third extension portion; 4231, first surface; 4232, second surface; 43, bottom shell; 4301, second end face; 431, fin; 432, storage groove; 433, groove portion; 44, protrusion.

DETAILED DESCRIPTION

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments described in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, top and bottom) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

In the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

Referring to FIG1 , an embodiment of the present application provides a charging device 100, which includes a housing 10, a heat exchange assembly 40, an internal electronic device 20 (refer to FIG2 ), and a pin 30. Referring to FIG2 , the housing 10 has an inner cavity 13 and a mounting hole 15 connected to the inner cavity 13. The internal electronic device 20 is disposed in the inner cavity 13, the first part of the heat exchange assembly 40 is disposed in the inner cavity 13 and is thermally connected to the internal electronic device 20 (i.e., thermally conductively connected), and the second part of the heat exchange assembly 40 extends out of the inner cavity 13 through the mounting hole 15. The pin 30 is connected to the second part of the heat exchange assembly 40, one end of the pin 30 is electrically connected to the internal electronic device 20 in the inner cavity 13, and the other end thereof extends out of the inner cavity 13 through the second part.

The charging device 100 provided in the embodiment of the present application is, for example, a power adapter or a charging energy stick that can charge various electronic products (such as mobile phones, computers, tablets, portable thermostats, etc.). The pin 30 is used to be inserted into the socket to introduce current into the internal electronic device 20. The internal electronic device 20 includes, for example, a power management circuit, components as a component of the power management circuit, a circuit board that provides support and contacts for the power management circuit, and an output interface for outputting current to the electronic product to be charged. When the charging device 100 provided in this embodiment is used to charge the electronic product to be charged, the pin 30 is plugged into the socket, and the input current is adjusted by the internal electronic device 20 and output from the output interface to the electronic product to be charged to achieve charging. During charging, since the first part of the heat exchange component 40 is connected to the internal electronic device 20 by thermal conduction, and the second part extends out of the inner cavity 13, the heat generated by the internal electronic device 20 can be quickly conducted through the first part to the second part and finally dissipated outside the inner cavity 13. 5 , the second portion is provided with a receiving groove 432 for accommodating the pin 30 , and the pin 30 is movably connected to the second portion of the heat exchange assembly 40 . After charging is completed, the pin 30 can be stored in the receiving groove, for example, to facilitate the storage of the charging device 100 .

Since the pin 30 extends out of the inner cavity 13 through the second part, when the charging device 100 is plugged into the socket through the pin 30, the second part of the heat exchange assembly 40 is located on the side of the housing 10 facing the socket, that is, on the side that the user will not touch, so the heat can be conducted to the unconventional contact surface through the heat exchange assembly 40. Since people will not touch the side where the pin 30 is located, that is, will not touch the second part of the heat exchange assembly 40 when the charging device 100 is unplugged from the socket during charging and after charging is completed, the problem of burning hands can be avoided. Wherein, the housing 10, for example, includes an outer shell 12, which can be set to a material with poor thermal conductivity, or the outer shell 12 is spaced from the internal electronic device 20, or a heat insulating material can be set between the outer shell 12 and the internal electronic device 20, or the housing 10 includes an outer shell 12 and an inner shell 14, and the outer shell 12 is isolated from the internal electronic device 20 by the inner shell 14, etc., to ensure that the heat is mainly conducted from the second part of the heat exchange assembly 40 instead of being directed to the surface of the outer shell 12.

In some embodiments, referring to FIG. 7 and FIG. 8 , a connection hole 16 is provided on the side of the housing 10 facing away from the mounting hole 15, and the internal electronic device 20 includes an electrical connector 24 provided corresponding to the connection hole 16, and an external connector can be connected to the electrical connector 24 through the connection hole 16. The electrical connector 24 is an output interface electrically connected to the internal power management circuit, and the external connector is, for example, a charging interface on the device to be charged or an input interface on a data cable or a charging cable. When charging, the external connector needs to be connected to the electrical connector 24 through the connection hole 16 to charge the current into the device to be charged. When charging is completed, the external connector needs to be unplugged from the charging device 100, so it may contact the housing 10. In this embodiment, the connection hole 16 is provided on the side of the housing 10 away from the mounting hole 15, that is, away from the side of the second part of the heat exchange assembly 40, so that the connection hole 16 is as far away from the heat dissipation part as possible to prevent the external connector from being burned when being unplugged.

In the above-mentioned embodiment, the second part of the heat exchange component 40 includes, for example, a bottom shell 43, which is arranged in the mounting hole 15 and seals the inner cavity 13, and the surface of the bottom shell 43 facing away from the housing 10 is exposed outside the inner cavity 13, and the pins 30 are passed through the bottom shell 43. Therefore, the heat derived from the second part can be contacted with the air outside the inner cavity 13 through the surface of the bottom shell 43 facing away from the housing 10, thereby dissipating the heat into the air. In some embodiments, referring to Figures 5 and 6, a plurality of fins 431 are arranged on the surface of the bottom shell 43 away from the inner cavity 13, and the plurality of fins 431 are arranged at intervals from each other. By providing a plurality of fins 431, the contact area between the bottom shell 43 and the air can be increased, thereby achieving a better heat conduction effect.

The first part of the heat exchange assembly 40 may be, for example, a thermally conductive adhesive filled between the bottom shell 43 and the internal electronic device 20 , or may be other thermally conductive materials.

In some embodiments, the first part of the heat exchange assembly 40 includes a heat conductive bracket 41, which is disposed in the inner cavity 13, and the heat conductive bracket 41 supports the internal electronic device 20. Referring to Figures 2 and 3, the internal electronic device 20 includes, for example, a first circuit board 22 and a second circuit board 23, on which a plurality of components are disposed respectively, and the first circuit board 22 and the second circuit board 23 are disposed perpendicularly to each other, which can make the structure more compact. At least one of the first circuit board 22 and the second circuit board 23 is connected to the heat conductive bracket 41, so that the heat conductive bracket 41 provides support for the first circuit board 22 and the second circuit board 23, so that the internal electronic device 20 is assembled into a whole, which is convenient for assembly. While providing support, the contact area between the heat conductive bracket 41 and the first circuit board 22 and the second circuit board 23 is large, which is conducive to conducting the heat generated by the internal electronic device 20 to the bottom shell 43 through the heat conductive bracket 41, so as to achieve a better heat conduction effect. The above solution provided in this embodiment combines the supporting function and the heat conducting function into the heat conducting bracket 41 , which can realize the reasonable utilization of the space in the inner cavity 13 , making the structure of the charging device 100 more compact, reducing the volume and saving materials.

In some embodiments, one end of the heat-conducting bracket 41 close to the bottom shell 43 is connected to the middle of the bottom shell 43. That is, the heat-conducting bracket 41 guides the heat generated by the internal electronic device 20 to the middle of the bottom shell 43 and then evenly guides it out from the bottom shell 43, so that the heat conduction is faster and the effect is better.

In some embodiments, the internal electronic device 20 includes a target heat dissipation device 21, and the first part of the heat exchange assembly 40 includes a heat conductive extension portion 42, the heat conductive extension portion 42 extends from the side of the bottom shell 43 close to the inner cavity 13 toward the inner cavity 13, and the heat conductive extension portion 42 is thermally connected to the target heat dissipation device 21. The target heat dissipation device 21 refers to a component that generates high heat when the charging device 100 is working, such as a transformer, a capacitor, a chip, etc. The number of target heat dissipation devices 21 is, for example, multiple, and the heat conductive extension portion 42 extends to at least one target heat dissipation device 21 among the multiple target heat dissipation devices 21. By providing the heat conductive extension portion 42, heat conduction can be focused on the area with higher heat generation in the internal electronic device 20 to achieve rapid heat dissipation.

For example, referring to FIG. 2 , the multiple target heat dissipation devices 21 include a rectifier chip 211, and the heat-conducting extension portion 42 includes a first extension portion 421, and the first extension portion 421 extends to the rectifier chip 211. When the charging device 100 is working, the pin 30 is inserted into the socket to introduce the alternating current into the internal electronic device 20, and the alternating current point needs to be rectified and filtered. The rectifier chip 211 is composed of a plurality of diodes, which is the part of the internal electronic device 20 that rectifies the alternating current and can adjust the direction of the current. In this embodiment, the first extension portion 421 is provided for the rectifier chip 211 to quickly conduct the heat on the rectifier chip 211 to the bottom shell 43.

In some embodiments, referring to FIG. 4 , the plurality of target heat dissipation devices 21 include a filter device 213 and a transformer 212, and the heat conductive extension portion 42 includes a second extension portion 422, and the second extension portion 422 extends between the filter device 213 and the transformer 212. The filter device 213 is, for example, one of the circuit components in the charging device 100 responsible for converting the high-voltage power supply, so that the pulsating DC high voltage input by the rectifier circuit is converted into a stable DC high voltage suitable for use by the transformer 212. The transformer 212 is responsible for further converting the DC high voltage transmitted by the filter device 213 into a DC low voltage suitable for use by the electronic product to be charged. In this embodiment, by setting the second extension portion 422 between the filter device 213 and the transformer 212, on the one hand, the heat on the filter device 213 and the transformer 212 can be synchronously extracted by the second extension portion 422, and on the other hand, the second extension portion 422 can also be used as an insulating structure to isolate the filter device 213 and the transformer 212 so that the filter device 213 and the transformer 212 meet the safety distance, so that the filter device 213 and the transformer 212 can be set closer, such as stacked on each other or close together with the second extension portion 422, which can make the structure more compact and reduce the volume of the charging device 100. In some embodiments, the second extension portion 422 can also be set to a shape surrounding the transformer 212 or the filter device 213, such as the L-shape shown in Figure 4.

In some embodiments, the bottom shell 43 is, for example, a high thermal conductivity insulating material. That is, the bottom shell 43 can be made of a high thermal conductivity insulating material. For example, the high thermal conductivity insulating material can be, for example, a composition of polycarbonate, graphite and a phosphorus-containing flame retardant, wherein the concentration (i.e., mass fraction) of polycarbonate is 70%-80%, the concentration of graphite is less than or equal to 25%, the concentration of the phosphorus-containing flame retardant is less than or equal to 5%, and the phosphorus-containing flame retardant is, for example, a phosphate flame retardant. It should be understood that the bottom shell 43 is not limited to the high thermal conductivity insulating material of the above components, as long as the bottom shell 43 has a material with good thermal conductivity and insulation. The high thermal conductivity insulating material has super thermal conductivity under certain temperature conditions and can transfer heat at a faster rate, so the effect of rapid heat conduction through the bottom shell 43 can be achieved.

In some embodiments, the first part of the heat exchange component 40 includes a high thermal conductivity insulating material. That is, the first part of the heat exchange component 40 can be made of a high thermal conductivity insulating material. For example, the aforementioned thermally conductive bracket 41 is made of a high thermal conductivity insulating material. Or the thermally conductive extension 42 is made of a high thermal conductivity insulating material. This embodiment is not limited. By selecting a high thermal conductivity insulating material, the first part can be designed to conduct heat along the length direction to achieve a better thermal conductivity effect. For example, the thermally conductive extension 42 can be set to conduct heat in a direction extending from the bottom shell 43 to the target heat dissipation device 21, so that the heat can be conducted to the bottom shell 43 more quickly.

In other embodiments, the heat exchange assembly 40 includes a metal member and an insulating member, and the insulating member insulates the metal member from the internal electronic device 20. For example, an insulating layer may be wrapped around the metal member, or an insulating member may be provided on a side of the metal member closer to the internal electronic device 20, thereby utilizing the thermal conductivity of the metal to achieve rapid heat conduction and ensuring safety through the insulating member.

In some embodiments, the housing 10 includes an outer shell 12 and an inner shell 14, the inner shell 14 is arranged around the mounting hole 15, and the heat exchange assembly 40 includes a heat conductive extension portion 42 extending from the second portion toward the inner cavity 13, and the heat conductive extension portion 42 is in contact with the inner shell 14. Through the above arrangement, the inner shell 14 can absorb the heat emitted from the internal electronic device 20 to the inner cavity 13, and the heat absorbed by the inner shell 14 is conducted to the second portion of the heat exchange assembly 40 by the heat conductive extension portion 42, so that the heat is conducted out of the inner cavity 13 through the second portion, reducing the heat transfer through the outer shell 12, and preventing the user from getting burned when touching the outer shell 12.

Referring to FIGS. 9 to 15 , another embodiment of the present application provides a charging device 100 , which differs from the above-mentioned embodiment mainly in that the structure of the heat-conducting bracket 41 is different. The charging device 100 of this embodiment includes, for example, a housing 10 , a bottom housing 43 , a heat-conducting bracket 41 , an internal electronic device 20 , and a pin 30 . As shown in FIG. 10 , the housing 10 includes, for example, an outer housing 12 and an inner housing 14 , the outer housing 12 is sleeved outside the inner housing 14 , and the housing 10 has an inner cavity 13 and a mounting hole 15 connected to the inner cavity 13 . In this embodiment, the inner cavity 13 is formed inside the inner housing 14 , and the mounting hole 15 is also provided on the inner housing 14 . Among them, the bottom housing 43 is connected to the housing 10 , the bottom housing 43 can be sealed with the housing 10 , and the bottom housing 43 is sealed with the housing 10 to form the inner cavity 13 . The heat-conducting bracket 41 is connected to the bottom housing 43 and is located in the inner cavity 13 . The internal electronic device 20 is arranged in the inner cavity 13 and is thermally connected to the heat-conducting bracket 41 . The pin 30 is disposed on the bottom shell 43 , one end of the pin 30 is electrically connected to the internal electronic device 20 in the inner cavity 13 , and the other end thereof extends through the bottom shell 43 and is exposed at a side of the bottom shell 43 away from the heat conductive bracket 41 .

Specifically, the pin 30 is used to be inserted into the socket and conduct current to the internal electronic device 20. The internal electronic device 20 includes, for example, a power management circuit, components as a component of the power management circuit, a circuit board that provides support and contacts for the power management circuit, and an output interface for outputting current to the electronic product to be charged. When the charging device 100 provided in this embodiment is used to charge the electronic product to be charged, the pin 30 is plugged into the socket, and the input current is adjusted by the internal electronic device 20 and output from the output interface to the electronic product to be charged to achieve charging. During charging, since the heat-conducting bracket 41 is thermally connected to the internal electronic device 20 and the heat-conducting bracket 41 is connected to the bottom shell 43, the heat generated by the internal electronic device 20 can be quickly conducted to the bottom shell 43 through the heat-conducting bracket 41, and the heat generated by the internal electronic device 20 can be quickly conducted to the outside of the inner cavity 13. As shown in FIG13 , the bottom shell 43 has a receiving groove 432 for accommodating the pin 30 on one side away from the inner cavity 13. The pin 30 is movably connected to the bottom shell 43. After charging is completed, the pin 30 can be stored in the receiving groove, which is convenient for storing the charging device 100. The outer shell 12 is made of a transparent material, and the inner shell 14 is made of a plastic material. The inner shell 14 can be made of a transparent material or an opaque material. The outer shell 12 is isolated from the internal electronic device 20 through the inner shell 14.

In this embodiment, the heat is connected to the internal electronic device 20 through heat conduction through the heat-conducting bracket 41, and the heat-conducting bracket 41 is arranged on the bottom shell 43. After the heat is connected to the internal electronic device 20 through heat conduction through the heat-conducting bracket 41, the heat is discharged to the outside of the inner cavity 13 through the bottom shell 43 connected to the heat-conducting bracket 41, so that the heat of the internal electronic device 20 can be discharged, which can solve the problem that the heat dissipation effect is not ideal on the basis of the miniaturization of the charging device 100.

As shown in FIGS. 10 to 12 , a first extension portion 421 is provided on the heat-conducting bracket 41, and the first extension portion 421 extends toward the internal electronic device 20, and the first extension portion 421 is thermally connected to the internal electronic device 20. The internal electronic device 20 includes, for example, a target heat dissipation device 21, which refers to an electronic component of the charging device 100 that generates high heat when working, such as a transformer, a capacitor, a chip, etc. The first extension portion 421 is thermally connected to the target heat dissipation device 21, so as to facilitate directional heat dissipation of the target heat dissipation device 21.

Further, the target heat dissipation device 21 includes, for example, a first circuit board 22 and a rectifier chip 211, and the first circuit board 22 is connected to the bottom shell 43. The rectifier chip 211 is arranged on the first circuit board 22, and the first extension portion 421 extends to the rectifier chip 211 and is connected to the rectifier chip 211 by thermal conduction. In the present application, the internal electronic device 20 in the charging device 100 will generate heat when working, but some electronic components emit relatively high heat when working, that is, high-heat electronic devices. The rectifier chip 211 in the present application belongs to a high-heat electronic device. When the charging device 100 is working, the pin 30 is inserted into the socket to introduce the alternating current into the internal electronic device 20, and then the alternating current is rectified by the rectifier chip 211, and the direction of the current is adjusted to convert the input alternating current into pulsating direct current. By setting the first extension portion 421 to extend to the rectifier chip 211, the heat on the rectifier chip 211 can be quickly exported to the bottom shell 43 through the first extension portion 421, so as to achieve the purpose of directional heat dissipation.

Specifically, as shown in Figures 11 and 12, the rectifier chip 211 is arranged on a side of the first circuit board 22 close to the inner wall of the housing 10, and the first extension portion 421 extends to the rectifier chip 211 and is in contact with and connected to the rectifier chip 211. By arranging the rectifier chip 211 on a side of the first circuit board 22 close to the inner wall of the housing 10, it is more convenient to conduct the heat of the rectifier chip to the outside of the cavity through the heat-conducting bracket 41, thereby achieving the purpose of further directional heat dissipation and heat conduction.

Further, the target heat dissipation device 21 also includes, for example, a second circuit board 23 and a filter device 213. The second circuit board 23 is connected to the first circuit board 22, and the second circuit board 23 is connected to the bottom shell 43. The first circuit board 22 and the second circuit board 23 are used to integrate the internal electronic device 20 into a whole, which is convenient for assembly to the bottom shell 43 and thermally connected to the heat-conducting bracket 41. At the same time, the first circuit board 22 and the second circuit board 23 are provided, so that the contact area between the heat-conducting bracket 41 and the first circuit board 22 and the second circuit board 23 can be increased. The filter device 213 is arranged on the second circuit board 23, and the heat-conducting bracket 41 is also provided with a second extension portion 422, and the second extension portion 422 extends to the outer surface of the filter device 213. Among them, the filter device 213 is, for example, one of the circuit components responsible for converting high-voltage power in the charging device 100. By extending the second extension portion 422 to the outer surface of the filter device 213, the heat generated by the filter device 213 can be quickly taken away to the bottom shell 43 and discharged to the outside of the inner cavity 13.

In some embodiments, the first circuit board 22 and the second circuit board 23 may be disposed perpendicularly to each other, and the structure of the internal electronic device 20 may be made more compact by arranging them perpendicularly to each other.

Furthermore, as shown in FIGS. 11 and 12 , the filter device 213 includes a first capacitor 2131 and a second capacitor 2132, and the first capacitor 2131 and the second capacitor 2132 are arranged on the second circuit board 23 at intervals, and the heat-conducting bracket 41 also includes a third extension portion 423, and the third extension portion 423 extends from the second extension portion 422 to between the first capacitor 2131 and the second capacitor 2132. The first capacitor 2131 and the second capacitor 2132 are, for example, electrolytic capacitors in the circuit responsible for converting high-voltage power in the charging device 100. By arranging the third extension portion 423 between the gap between the first capacitor 2131 and the second capacitor 2132, the heat generated by the first capacitor 2131 and the second capacitor 2132 can be further quickly conducted to the outside of the inner cavity 13, thereby achieving the purpose of rapid heat dissipation.

Furthermore, as shown in FIGS. 11 to 13 , the third extension portion 423 is perpendicular to the second extension portion 422, and the third extension portion 423 has a first surface 4231 and a second surface 4232 that are arranged opposite to each other, the first surface 4231 is in contact with the side surface of the first capacitor 2131, the second surface 4232 is in contact with the side surface of the second capacitor 2132, and the second extension portion 422 is in contact with the end surfaces of the first capacitor 2131 and the second capacitor 2132, respectively. By arranging the second extension portion 422 and the third extension portion 423 to be in contact with the surfaces of the first capacitor 2131 and the second capacitor 2132, respectively, the purpose of further heat dissipation and heat conduction of the filter element 213 can be achieved.

As shown in FIG14 , the heat-conducting bracket 41 includes a first end face 4101 close to the bottom shell 43, the bottom shell 43 includes a second end face 4301 corresponding to the first end face 4101, and the first end face 4101 is in contact with and connected to the second end face 4301. The heat-conducting bracket 41 can be aligned with and fixedly connected to the bottom shell 43 by the first end face 4101 and the second end face 4301 being in contact with and connected to each other.

In some embodiments, the thermally conductive bracket 41 is an annular structure; and/or, the thermally conductive bracket 41 and the bottom shell 43 are separate structures.

The heat-conducting bracket 41 is configured as a ring structure, so that the heat absorbed by the heat-conducting bracket 41 can be conducted in a ring direction, achieving a rapid heat-averaging effect and avoiding the phenomenon of scalding caused by excessive local temperature.

The heat-conducting bracket 41 and the bottom shell 43 are designed to be separated, so that the heat-conducting bracket 41 can be produced separately by injection molding, reducing the complexity of the injection mold and improving production efficiency. In some embodiments, the heat-conducting bracket 41 can be fixedly connected to the bottom shell 43 by means of adhesive, ultrasonic welding, etc. In other embodiments, the heat-conducting bracket 41 and the bottom shell 43 are detachably connected, which can facilitate the assembly and disassembly between the heat-conducting bracket 41 and the bottom shell 43. In addition, when the charging device 100 is upgraded, that is, the arrangement of the internal electronic devices 20 changes, only the heat-conducting bracket 41 that is compatible with it can be replaced, thereby reducing the production cost of the charging device 100.

Further, as shown in FIG. 14 , the heat-conducting bracket 41 is provided with a protrusion 44 protruding toward the bottom shell 43, the protrusion 44 is provided on the first end face 4101, and the second end face 4301 is correspondingly provided with a groove 433, and the protrusion 44 is connected to the groove 433. In this embodiment, the heat-conducting bracket is, for example, a bracket in an annular shape, and the annular shape is hollow, and the hollow part is used to set the internal electronic device 20, that is, the heat-conducting bracket 41 can be sleeved on the outer side of the internal electronic device 20. Since the heat-conducting bracket 41 is annular, its first end face 4101 in contact with the bottom shell 43 is similar to a hollow rectangle, and its heat conduction area is fixed. The protrusion 44 is provided on the heat-conducting bracket 41, which is equivalent to increasing the contact area with the bottom shell, that is, increasing the heat conduction connection area, so that the heat-conducting bracket 41 can transfer more heat to the bottom shell 43 and then discharge it from the bottom shell 43. In addition, the arrangement of the protrusion 44 and the groove 433 can facilitate the assembly of the heat-conducting bracket 41 and the bottom shell 43, and can also play a fool-proof effect to avoid assembly failure.

In some embodiments, as shown in Figure 15, the outer surface of the thermally conductive bracket 41 is inclined from the periphery toward the center, and the outer surface of the bottom shell 43 is also inclined from the periphery toward the center. Through such an arrangement, the thermally conductive bracket 41 and the bottom shell 43 can be more conveniently assembled with the shell 10, so that the thermally conductive bracket 41 can be conveniently assembled into the inner cavity 13.

The heat-conducting bracket 41 and the bottom shell 43 may be, for example, heat-conducting material pieces. That is, the heat-conducting bracket 41 and the bottom shell 43 may be made of heat-conducting material. The heat-conducting material may be, for example, a heat-conducting material in the prior art. The heat-conducting material may be, for example, a material with super-strong heat-conducting properties, which can transfer heat at an extremely fast speed, thereby achieving the effect of rapid heat conduction through the heat-conducting bracket 41 and the bottom shell 43.

Furthermore, as shown in FIG. 14 , a fixing bracket 17 is provided on one side of the bottom shell 43 close to the inner cavity 13 , and one end of the pin 30 electrically connected to the internal electronic device 20 is connected to the fixing bracket 17 .

In some embodiments, the outer surface of the thermally conductive bracket 41 is flush with the outer surface of the bottom case 43 .

Specifically, as shown in Figure 16, the outer surface of the thermally conductive bracket 41 is flush with the outer surface of the bottom shell 43, and the outer surfaces between the thermally conductive bracket 41 and the bottom shell 43 are flush, which can facilitate the assembly of the thermally conductive bracket 41 and the bottom shell 43. The thermally conductive bracket 41 and the bottom shell 43 can be assembled first, and then the assembled combination of the thermally conductive bracket 41 and the bottom shell 43 can be assembled into the inner cavity 13, thereby improving the assembly efficiency.

In addition, it can be understood that the aforementioned embodiments are merely illustrative descriptions of the present application. Under the premise that the technical features do not conflict, the structures do not contradict, and the purpose of the invention of the present application is not violated, the technical solutions of the various embodiments can be arbitrarily combined and used in combination.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (24)

A charging device, comprising: A housing having an inner cavity and a mounting hole communicating with the inner cavity; a heat exchange assembly, wherein a first portion of the heat exchange assembly is located in the inner cavity, and a second portion of the heat exchange assembly extends out of the inner cavity through the mounting hole; an internal electronic device disposed in the inner cavity and thermally connected to the first portion of the heat exchange assembly; A pin is connected to the second part of the heat exchange component, one end of the pin is electrically connected to the internal electronic device in the inner cavity, and the other end of the pin passes through the second part and extends out of the inner cavity. The charging device as described in claim 1 is characterized in that the second part of the heat exchange component includes a bottom shell, which is arranged in the mounting hole and seals the inner cavity; the surface of the bottom shell facing away from the shell is exposed outside the inner cavity; and the pin passes through the bottom shell. The charging device according to claim 2, characterized in that the first part includes a thermally conductive bracket, the thermally conductive bracket is arranged in the inner cavity, and the thermally conductive bracket supports the internal electronic device. The charging device according to claim 3, characterized in that an end of the thermally conductive bracket close to the bottom shell is connected to the middle part of the bottom shell. The charging device as described in claim 3 is characterized in that the internal electronic device includes a first circuit board and a second circuit board, the first circuit board and the second circuit board are perpendicular to each other and at least one of the first circuit board and the second circuit board is connected to the thermally conductive bracket. The charging device as described in claim 2 is characterized in that the internal electronic device includes a target heat dissipation device, the first part includes a thermally conductive extension portion, the thermally conductive extension portion extends from a side of the bottom shell close to the inner cavity toward the inner cavity, and the thermally conductive extension portion is thermally connected to the target heat dissipation device. The charging device according to claim 6 is characterized in that the number of the target heat dissipation devices is multiple, and the heat conductive extension portion extends to at least one target heat dissipation device among the multiple target heat dissipation devices. The charging device according to claim 7, characterized in that the plurality of target heat dissipation devices include a rectifier chip, and the heat conductive extension portion includes a first extension portion, and the first extension portion extends to the rectifier chip. The charging device according to claim 7 is characterized in that the plurality of target heat dissipation devices include a filter device and a transformer, and the thermally conductive extension portion includes a second extension portion, and the second extension portion extends between the filter device and the transformer. The charging device according to any one of claims 2 to 9 is characterized in that the bottom shell is made of an insulating material with high thermal conductivity; and/or the first part includes a metal part and an insulating part, and the insulating part insulates the metal part from the internal electronic device. The charging device as described in claim 2 is characterized in that a plurality of fins are arranged on the surface of the bottom shell away from the inner cavity, and the plurality of fins are arranged at intervals from each other. The charging device as described in claim 2 is characterized in that a storage groove is provided on the bottom shell, and the plug is movably connected to the bottom shell and can be stored in the storage groove. The charging device as described in claim 1 is characterized in that a connecting hole is provided on the side of the shell facing away from the mounting hole, the internal electronic device includes an electrical connector arranged corresponding to the connecting hole, and an external connector can be connected to the electrical connector through the connecting hole. The charging device as described in claim 1 is characterized in that the shell includes an outer shell and an inner shell, the inner cavity is arranged in the inner shell, and the heat exchange component also includes a thermally conductive extension portion extending from the second portion into the inner cavity, and the thermally conductive extension portion is in contact with the inner shell. A charging device, comprising: A housing having an inner cavity, wherein the inner cavity is provided with internal electronic components; A bottom shell connected to the housing, the bottom shell being provided with pins electrically connected to the internal electronic components; The heat-conducting bracket is located in the inner cavity, and the heat-conducting bracket is respectively connected to the internal electronic device and the bottom shell by thermal conduction. The charging device according to claim 15 is characterized in that a first extension portion is provided on the heat-conducting bracket, the internal electronic device includes a target heat dissipation device, the first extension portion extends toward the target heat dissipation device, and the first extension portion is thermally conductively connected to the target heat dissipation device. The charging device according to claim 16 is characterized in that the target heat dissipation device includes a first circuit board and a rectifier chip, the first circuit board is connected to the bottom shell, the rectifier chip is arranged on the first circuit board, and the first extension portion is thermally connected to the rectifier chip. The charging device according to claim 17 is characterized in that the rectifier chip is arranged on a side of the first circuit board close to the inner wall of the shell, and the first extension portion extends to the rectifier chip and is in contact and connected with the rectifier chip. The charging device according to claim 17 is characterized in that the target heat dissipation device also includes a second circuit board and a filter device, the second circuit board is connected to the first circuit board; the filter device is arranged on the second circuit board, and the thermal conductive bracket is also provided with a second extension portion, and the second extension portion extends to the outer surface of the filter device. The charging device according to claim 19, characterized in that the filter device includes a first capacitor and a second capacitor, and the thermally conductive bracket also includes a third extension portion, and the third extension portion extends from the second extension portion to between the first capacitor and the second capacitor. The charging device according to claim 15, characterized in that the thermally conductive bracket includes a first end surface close to the bottom shell, the bottom shell includes a second end surface corresponding to the first end surface, and the first end surface is in contact with the second end surface. The charging device according to claim 21 is characterized in that a protrusion is provided on the heat-conducting bracket, the protrusion is provided on the first end surface and protrudes toward the bottom shell, and a groove portion is correspondingly provided on the second end surface, and the protrusion is connected to the groove portion. The charging device according to claim 15 is characterized in that the thermally conductive bracket is a ring-shaped structure; and/or the thermally conductive bracket and the bottom shell are separate structures. The charging device according to claim 15 is characterized in that a fixing bracket is provided on a side of the bottom shell close to the inner cavity, one end of the pin is connected to the fixing bracket, and the other opposite end extends through the bottom shell and is exposed on a side of the bottom shell away from the heat-conducting bracket.