Charging device

Abstract

The embodiment of the invention provides a charging device. The charging device comprises a shell, a circuit board and a heat dissipation aluminum plate, wherein the circuit board and the heat dissipation aluminum plate are arranged in the shell. Wherein one end of the shell is provided with a charging socket for placing a charging plug, and the other end of the shell is provided with a heat dissipation port; an alternating-current inlet wire enters the device from the left cable waterproof joint and is led out of the circuit board wiring terminal, an alternating-current outlet wire is led out of the circuit board wiring terminal and is led out to the charging plug through the right cable waterproof joint, the alternating-current inlet wire and the alternating-current outlet wire are used for power distribution and electrical signal transmission, and copper coating treatment is conducted at the set position of the bottom of the circuit board; one end of the heat dissipation aluminum plate is attached to the circuit board, and the other end of the heat dissipation aluminum plate is arranged on the heat dissipation opening and used for conducting heat dissipation on the circuit board. According to the scheme, the heat dissipation speed is high, components on the circuit board can be effectively prevented from being damaged due to overheating, and the fault rate of the charging device is reduced.

Description

Technical Field

[0001] The present application relates to the field of electrical equipment, and in particular to a charging device. Background Art

[0002] Charging piles refer to charging devices that provide energy for electric vehicles. Their functions are similar to those of gas pumps in gas stations. They can be fixed on the ground or on the wall and installed in public buildings (public buildings, shopping malls, public parking lots, etc.) and residential parking lots or charging stations. They can charge various types of electric vehicles according to different voltage levels. Among them, three-phase AC charging piles are widely used because of their higher charging power, higher stability and safety.

[0003] In the prior art, three-phase AC charging piles are generally designed in the form of separating the main control board from the main circuit electrical components (leakage protection, electric meter, contactor). However, such a design makes the charging pile body larger and the heat points dispersed. At present, its heat dissipation method is mainly natural cooling, that is, heat dissipation is completed by heat exchange with the air. The heat dissipation speed is slow, which increases the failure rate of the charging pile. Summary of the invention

[0004] Multiple aspects of the present application provide a charging device that can effectively prevent components on a circuit board from being damaged due to overheating, thereby reducing the failure rate of the charging device.

[0005] The embodiment of the present application provides a charging device, the charging device comprising: a housing, a circuit board and a heat dissipation aluminum plate arranged in the housing;

[0006] One end of the housing is provided with a charging socket for placing a charging plug, and the other end is provided with a heat dissipation port;

[0007] The circuit board is electrically connected to the charging plug placed on the charging socket through the wiring terminal, and is used for power distribution and electrical signal transmission, wherein the circuit board is copper-clad at a set position at the bottom;

[0008] One end of the heat dissipation aluminum plate is attached to the circuit board, and the other end is arranged on the heat dissipation port for dissipating heat for the circuit board.

[0009] In an optional design, the device further includes: a silicone member disposed on the top of the circuit board.

[0010] In an optional design, the device further includes: a heat conducting member disposed between the silicone member and the heat dissipating aluminum plate.

[0011] In an optional design, the heat conducting member is made of graphene.

[0012] In an optional design, a set position on the heat dissipation aluminum plate has an opening, and the opening is filled with silica gel mud, wherein the set position corresponds to a heating pin of a set component on the circuit board.

[0013] In an optional design, the housing includes a first housing component and a second housing component;

[0014] The first housing component is provided with a charging socket;

[0015] The second shell component is provided with a heat dissipation port, and the heat dissipation aluminum plate is arranged at the heat dissipation port.

[0016] In an optional design, the first shell component and the second shell component are detachably connected.

[0017] In an optional design, the circuit board and the silicone member are arranged in the first housing assembly.

[0018] In an optional design, the heat dissipation aluminum plate is detachably connected to the first shell assembly.

[0019] In an optional design, the heat dissipation aluminum plate is detachably connected to the second housing component.

[0020] In the embodiment of the present application, by setting a heat dissipation aluminum plate, and fitting one end of the heat dissipation aluminum plate to the circuit board, and setting the other end on the heat dissipation port of the housing, not only can the heat dissipation of the circuit board be achieved based on the high thermal conductivity of the heat dissipation aluminum plate, which can quickly conduct heat, but also the dissipated heat can be discharged from the housing through the heat dissipation port. That is, this solution has a fast heat dissipation speed, which can effectively prevent the components on the circuit board from being damaged due to overheating, and reduce the failure rate of the charging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0022] Figure 1 A schematic structural diagram of a charging device provided as an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0024] Charging piles refer to charging devices that provide energy for electric vehicles. Their functions are similar to those of gas pumps in gas stations. They can be fixed on the ground or on the wall and installed in public buildings (public buildings, shopping malls, public parking lots, etc.) and residential parking lots or charging stations. They can charge various types of electric vehicles according to different voltage levels. Among them, three-phase AC charging piles are widely used because of their higher charging power, higher stability and safety.

[0025] At present, three-phase AC charging piles are generally designed in the form of separating the main control board from the main circuit electrical components (leakage protection, electric meter, contactor). However, such a design makes the charging pile body larger and the heat points dispersed. At present, its heat dissipation method is mainly natural cooling, that is, relying on heat exchange with air to complete heat dissipation. The heat dissipation speed is slow, which increases the failure rate of the charging pile. In view of this, the present application proposes a charging device.

[0026] Figure 1 This is a schematic diagram of the structure of a charging device provided in an embodiment of the present application. Figure 1 As shown, the charging device includes: a housing 1, a circuit board 2 and a heat dissipation aluminum plate 3 arranged in the housing 1. One end of the housing 1 is provided with a charging socket 111 for placing a charging plug, and the other end is provided with a heat dissipation port 121. The circuit board 2 is electrically connected to the charging plug placed on the charging socket 111 through a wiring terminal, and is used for power distribution and electrical signal transmission, wherein the circuit board 2 is copper-clad at a set position at the bottom; one end of the heat dissipation aluminum plate 3 is in contact with the circuit board 2, and the other end is arranged on the heat dissipation port 121, and is used to dissipate heat from the circuit board 2.

[0027] It should be noted that the charging device provided in the embodiment of the present application can be in the form of a three-phase AC charging pile. The following takes the charging device as a three-phase AC charging pile as an example to specifically illustrate this solution:

[0028] In actual application, when the charging pile is working, the AC input line enters the circuit board terminal 21 in the housing 1 from the left cable waterproof connector 7 on the housing 1, and the AC output line is led out from the circuit board terminal 21 through the right cable waterproof connector 8 to the charging plug on the charging socket 111. In this process, the components on the circuit board 2 continue to distribute power and transmit electrical signals, so the circuit board 2 will heat up. In this process, the heat dissipation aluminum plate 3 continues to dissipate heat from the circuit board 2 and discharges the heat out of the housing through the heat dissipation port 121 on the housing 1.

[0029] Among them, Figure 1 As shown, the housing 1 includes a first housing assembly 11 and a second housing assembly 12. The charging socket 111 is arranged on the first housing assembly 11, the heat dissipation port 121 is arranged on the second housing assembly 12, and the heat dissipation aluminum plate 3 is arranged on the heat dissipation port 121. The first housing assembly 11 and the second housing assembly 12 can be square structures, circular structures, or other irregular structures, which are not limited here.

[0030] In order to facilitate installation and removal of components in the first housing assembly 11 and the second housing assembly 12, the first housing assembly 11 and the second housing assembly 12 can be provided with a detachable connection. Specifically, the first housing assembly 11 and the second housing assembly 12 can be connected by bolts, screws, nuts, etc.

[0031] Similarly, in order to facilitate the installation and removal of the heat dissipation aluminum plate 3 on the first housing assembly 11 or the second housing assembly 12, the heat dissipation aluminum plate 3 can be detachably connected to the first housing assembly 11, and at the same time, the heat dissipation aluminum plate 3 can be detachably connected to the second housing assembly 12. Specifically, bolts, screws, nuts, etc. can be used to fasten the heat dissipation aluminum plate 3 to the first housing assembly 11 or the second housing assembly 12.

[0032] The circuit board 2 may be a printed circuit board (PCB), on which a relay, a current sensor, an operational amplifier, a metering chip, a voltage / current sampling circuit, a contactor drive circuit, a power module, etc. may be arranged, which are not listed one by one here. By arranging the above components on the circuit board 2, functions such as leakage protection, metering, and contactor disconnection may be realized. In addition, the circuit board 2 is copper-clad at a set position at the bottom (corresponding to the position of the three-phase current main circuit). Specifically, the thickness of the copper-clad layer may be set to 2 ounces to maximize the current carrying capacity of the circuit and reduce the heat generation of the circuit board 2.

[0033] As for the heat dissipation aluminum plate 3, as an efficient heat dissipation material, the heat dissipation aluminum plate 3 has excellent thermal conductivity and can quickly conduct and dissipate the heat on the circuit board 2 to the surrounding environment. When the heat dissipation aluminum plate 3 is closely attached to the circuit board 2, it can effectively absorb and disperse the heat on the circuit board 2, thereby reducing the temperature of the circuit board 2 and improving the stability and reliability of the device.

[0034] Furthermore, when designing the heat dissipation aluminum plate 3, it is very important to consider the position of the circuit board pins. Because the circuit board pins are an important part of connecting the circuit board 2 with other components or external devices, if the heat dissipation aluminum plate 3 covers the pin position, the pins will not be inserted or connected normally. Therefore, in the design process of the heat dissipation aluminum plate 3, it is necessary to accurately measure and locate the position of the circuit board pins, and perform milling hole avoidance processing at the corresponding position. This milling hole avoidance processing not only ensures the normal installation and connection of the circuit board 2, but also further enhances the heat dissipation effect. Because through the milling holes, the heat dissipation aluminum plate 3 can better contact with other parts of the surface of the circuit board 2, thereby dissipating heat more evenly. At the same time, the milling holes can also increase the contact area between the heat dissipation aluminum plate 3 and the air, improve the thermal convection efficiency, and allow the heat to be dissipated to the surrounding environment faster.

[0035] The charging device provided in the embodiment of the present application is provided with a heat dissipation aluminum plate 3, and one end of the heat dissipation aluminum plate 3 is attached to the circuit board 2, and the other end is provided on the heat dissipation port 121 of the housing 1. Not only can the heat dissipation of the circuit board 2 be achieved based on the characteristics of the heat dissipation aluminum plate 3 having a high thermal conductivity and being able to quickly conduct heat, but the dissipated heat can also be discharged from the housing 1 through the heat dissipation port 121. That is, the heat dissipation speed of this solution is fast, and the components on the circuit board 2 can be effectively prevented from being damaged due to overheating, thereby reducing the failure rate of the charging device and increasing the quality and service life of the charging device.

[0036] In addition, since the present application adopts a PCB board integrated design, that is, multiple components such as relays, current sensors, operational amplifiers, metering chips, voltage / current sampling circuits, contactor drive circuits, power modules, etc. are integrated on the PCB board, the independent electrical components in the traditional design (such as leakage protection, electric meters, contactors, etc.) are eliminated, and the functions of these independent electrical components can also be realized, which greatly reduces the size of the charging device and reduces the cost.

[0037] Furthermore, if Figure 1 As shown, the charging device further includes: a silicone member 4, which is arranged on the top of the circuit board 2. The silicone member 4 can be specifically a thermal conductive silicone cloth.

[0038] In specific implementation, the thermally conductive silicone cloth can be fixed on the top of the circuit board 2 by gluing, specifically, on the key heating area of ​​the circuit board 2. Since the thermally conductive silicone cloth has the advantages of good electrical insulation, high chemical resistance, strong tensile strength and wear resistance, by setting it on the top of the circuit board 2, it can not only improve the heat dissipation effect of the circuit board 2, but also play the role of electrical insulation, prevent circuit short circuit, and improve safety.

[0039] It should be noted that, in practical applications, the circuit board 2 and the silicone member 4 may be disposed in the first housing component 11. Afterwards, the heat dissipation aluminum plate 3 is also fixed on the first housing component 11 to form a whole.

[0040] Furthermore, if Figure 1 As shown, the charging device further includes: a heat conducting member 5. The heat conducting member 5 is arranged between the silicone member 4 and the heat dissipating aluminum plate 3. Specifically, the heat conducting member 5 can be a heat conducting sheet made of graphene material.

[0041] It can be understood that since the graphene material heat conductive sheet has the advantages of high thermal conductivity, high strength, low density, good elasticity, energy saving and environmental protection, therefore, by setting the graphene material heat conductive sheet between the silicone member 4 and the heat dissipation aluminum plate 3, the heat dissipated by the silicone member 4 can be quickly conducted to the graphene material heat conductive sheet, and then the graphene material heat conductive sheet conducts the heat to the heat dissipation aluminum plate 3, thereby further improving the heat dissipation speed of the charging device.

[0042] In addition, if Figure 1 As shown, a setting position on the heat dissipation aluminum plate 3 has an opening 6, and the opening 6 is filled with silica gel mud, wherein the setting position corresponds to the heating pin of the setting component on the circuit board 2.

[0043] It is understandable that, since silica gel has excellent plasticity, filling capacity and thermal conductivity, by filling silica gel at the opening 6 of the heat dissipation aluminum plate 3 corresponding to the main heating pin below the relay component in the circuit board 2, the heat conduction distance can be further shortened, the heat conduction efficiency can be improved, and the overall heat dissipation speed of the charging device can be improved.

[0044] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of further restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention 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 invention.

Claims

1. A charging device, characterized in that: include: A housing, a circuit board and a heat dissipation aluminum plate arranged in the housing; One end of the housing is provided with a charging socket for placing a charging plug, and the other end is provided with a heat dissipation port; The circuit board is electrically connected to the charging plug placed on the charging socket through the wiring terminal, and is used for power distribution and electrical signal transmission, wherein the circuit board is copper-clad at a set position at the bottom; One end of the heat dissipation aluminum plate is attached to the circuit board, and the other end is arranged on the heat dissipation port for dissipating heat for the circuit board.

2. The device according to claim 1, characterized in that Also includes: The silicone piece is arranged on the top of the circuit board.

3. The device according to claim 2, characterized in that Also includes: The heat conducting member is arranged between the silicone member and the heat dissipating aluminum plate.

4. The device according to claim 3, characterized in that The heat conducting member is made of graphene.

5. The device according to claim 1, characterized in that The set position on the heat dissipation aluminum plate has an opening, and the opening is filled with silica gel mud, wherein the set position corresponds to the heating pin of the set component on the circuit board.

6. The device according to claim 2, characterized in that The housing comprises a first housing component and a second housing component; The first housing assembly is provided with a charging socket; The second shell component is provided with a heat dissipation port, and the heat dissipation aluminum plate is arranged on the heat dissipation port.

7. The device according to claim 6, characterized in that The first shell component and the second shell component are detachably connected.

8. The device according to claim 6, characterized in that The circuit board and the silicone member are arranged in the first housing assembly.

9. The device according to claim 6, characterized in that The heat dissipation aluminum plate is detachably connected to the first housing assembly.

10. The device according to claim 6, characterized in that The heat dissipation aluminum plate is detachably connected to the second housing assembly.

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