Charging module

Abstract

The present invention discloses a charging module, which belongs to the technical field of charging devices and is designed to solve the problem that the existing heat dissipation structure cannot meet the needs of the charging module. The charging module disclosed in the present invention includes: a box body, which is divided into a containing chamber and a cooling chamber; an air inlet fin assembly, which can perform heat exchange with the cooling airflow through the box body partition; and at least two airflow transmission devices, one of which is arranged at the air inlet end of the air inlet fin assembly, for blowing airflow into the air inlet fin assembly; one airflow transmission device is arranged at the air outlet end of the air inlet fin assembly, for sucking out the airflow in the air inlet fin assembly; all airflow transmission devices are relayed in sequence to form a circulating air duct. The air inlet fin assembly of the charging module disclosed in the present invention can perform heat exchange with the cooling airflow of the cooling chamber through the box body partition, and the airflow transmission device in the containing chamber allows the airflow to circulate, thereby improving the heat dissipation efficiency in the containing chamber and ensuring that the components in the containing chamber can operate within a suitable temperature range.

Description

Technical Field

[0001] The present invention relates to the technical field of charging devices, and in particular to a charging module. Background Art

[0002] When the charging module provides power to the device to be charged, it will generate a lot of heat, causing the temperature inside the charging module to rise significantly. In particular, the charging module with high power and small size will heat up faster. In order to prevent high temperature from affecting the performance of the components in the charging module, it is necessary to cool down the inside of the charging module in time to extend its service life.

[0003] Some existing charging modules reduce the density of heating components by increasing the internal space, thereby improving the cooling capacity. However, the large size requires a large space, has high requirements for the use environment, has a small scope of application, and has poor product competitiveness.

[0004] Some charging modules also place some high-power heating components outside, reducing the number of internal heating components to reduce the heating rate. The defects of this structure include: the components located on the outside lack protection, wiring is difficult, and failure is prone to occur; it also increases the space occupied by the charging module and limits the scope of use; the components located on the outside will generate a certain degree of thermal radiation or electromagnetic radiation to the surrounding environment, which is easily rejected by high-demand users, weakening the product's competitiveness. Summary of the invention

[0005] The purpose of the present invention is to provide a charging module, which solves the problem that the existing heat dissipation structure cannot meet the needs of the charging module and has a good heat dissipation effect.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The charging module comprises: a box body, which is provided with a box body partition inside, the box body partition divides the box body into a closed accommodating chamber and a cooling chamber allowing cooling airflow to pass through, and the accommodating chamber is provided with heat-generating components; an air inlet fin assembly is arranged in the accommodating chamber, and the air inlet fin assembly can exchange heat with the cooling airflow through the box body partition; and at least two airflow transfer devices are located in the accommodating chamber, one of the airflow transfer devices is arranged at the air inlet end of the air inlet fin assembly, and is used to blow airflow into the air inlet fin assembly; one of the airflow transfer devices is arranged at the air outlet end of the air inlet fin assembly, and is used to suck out the airflow in the air inlet fin assembly; in the accommodating chamber, all the airflow transfer devices are relayed in turn to form a circulating air duct, and the circulating air duct at least covers part of the heat-generating components in the charging module.

[0008] In one of the preferred embodiments, a first air duct is provided in the cooling cavity, an extension direction of the air inlet fin assembly is perpendicular to an air outlet direction of the first air duct, and a difference between an extension length of the air inlet fin assembly and a width of the first air duct is within a set range.

[0009] In one of the preferred embodiments, the air inlet fin assembly is aligned with the air inlet end of the first air duct and is arranged on both sides of the box partition.

[0010] In one of the preferred embodiments, an air outlet fin assembly is provided in the first air duct, an extension direction of the air outlet fin assembly is perpendicular to an extension direction of the air inlet fin assembly, and the air outlet fin assembly is located below the air inlet fin assembly.

[0011] In one of the preferred embodiments, the air outlet fin assembly and / or the air inlet fin assembly respectively include at least two fins spaced apart from each other, and one end of each fin connected to the box partition is wider than the other end away from the box partition.

[0012] In one of the preferred embodiments, the circulation air duct includes a second air duct and a third air duct, the second air duct is located in the air inlet fin assembly, and the third air duct is located between part of the heat-generating components and the side wall of the box.

[0013] In one of the preferred embodiments, the charging module also includes air duct paper and an upper cover, the upper cover is buckled on the box body, and the upper cover, the box body and the box body partition form the accommodating cavity; the air duct paper cover is arranged on the air inlet fin assembly, and the second air duct is located within the range surrounded by the air duct paper.

[0014] In one of the preferred embodiments, a first circuit board and a second circuit board are disposed in the box body, the circulating air duct also includes a fourth air duct, the fourth air duct is located between the first circuit board and the second circuit board, and the third air duct and the fourth air duct have the same extension direction.

[0015] In one of the preferred embodiments, the air flow transfer device includes a first fan arranged at the air inlet end of the air inlet fin assembly and a second fan arranged at the air outlet end of the air inlet fin assembly, the air outlet direction of the first fan is parallel to the extension direction of the second air duct, and the air outlet end of the second fan faces the third air duct.

[0016] In one of the preferred embodiments, the air flow transmission device also includes a third fan, the air inlet fin assembly is arranged at one end of the accommodating cavity, and the third fan is arranged at the other end of the accommodating cavity away from the air inlet fin assembly, and the third fan is used to change the flow direction of the cooling airflow in the circulating air duct.

[0017] In one of the preferred embodiments, a partition cooling fin is provided in the cooling cavity, the box partition is connected to the partition cooling fin, and the partition cooling fin can exchange heat with the heat generating components in the accommodating cavity through the box partition.

[0018] In one of the preferred embodiments, a fin boss is provided on the fin of the air inlet fin assembly, and the fin boss protrudes from the fin surface toward the cooling air flow channel.

[0019] A accommodating chamber and a cooling chamber are formed in the box body of the charging module disclosed in the present invention. The air inlet fin assembly in the accommodating chamber can exchange heat with the cooling airflow in the cooling chamber through the box body partition. The airflow transmission device in the accommodating chamber allows the airflow to circulate. The circulating air duct covers at least some of the heat-generating components in the charging module. The airflow is used to exchange heat with the heat-generating components. Then, the high-temperature air is heat-exchanged with the air inlet fin assembly. The air inlet fin assembly transfers the heat to the cooling chamber through the box body partition, thereby improving the heat dissipation efficiency in the accommodating chamber, ensuring that the components in the accommodating chamber can operate within a suitable temperature range, and realizing the combination of the internal heat dissipation system and the external heat dissipation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is an exploded view of a charging module provided in a specific embodiment of the present invention;

[0021] Figure 2 is a side view of a charging module provided in a specific embodiment of the present invention;

[0022] Figure 3 is a side cross-sectional view of a charging module provided in a specific embodiment of the present invention;

[0023] Figure 4 yes Figure 3 A partial enlarged view of the middle A;

[0024] Figure 5 is a top view of the charging module with the upper cover removed provided by a specific embodiment of the present invention;

[0025] Figure 6 is a bottom view of the charging module with the bottom plate removed provided by a specific embodiment of the present invention;

[0026] Figure 7 It is a top view of the combined structure of the box body, the air inlet fin assembly and the box body partition provided in a specific embodiment of the present invention.

[0027] In the figure:

[0028] 1. Box body; 2. Air inlet fin assembly; 4. Air duct paper; 5. Upper cover; 8. Air outlet fin assembly; 9. Bottom plate; 11. Box body partition; 12. Partition heat dissipation fin; 13. Box body heat dissipation fin; 14. External fan; 15. Box body partition slope; 16. Partition boss; 17. Accommodation cavity; 18. Cooling cavity; 21. Fin boss; 31. First air duct; 32. Second air duct; 33. Third air duct; 34. Fourth air duct; 61. First circuit board; 62. Second circuit board; 63. Capacitor assembly; 64. Inductor assembly; 65. Capacitor; 66. Input terminal; 67. Output terminal; 68. Relay; 71. First fan; 72. Second fan; 73. Third fan; 74. Fourth fan; 75. Fifth fan. DETAILED DESCRIPTION

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

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

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

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

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

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

[0035] This embodiment discloses a charging module for charging a device that uses electricity as energy, such as a tram. Figures 1 to 5 As shown, the charging module includes a box body 1, an air inlet fin assembly 2 and at least two airflow transmission devices, wherein the box body 1 is a U-shaped outer frame, and the upper cover 5, the box body partition 11 and the bottom plate 9 of the box body 1 together form a box-like structure, the upper cover 5 is buckled on the top surface of the outer frame, the bottom plate 9 is connected to the bottom surface of the outer frame, and the box body partition 11 is located inside the box-like structure. The upper cover 5, the box body partition 11 and the outer frame form a closed accommodating chamber 17, and the accommodating chamber 17 is provided with a heating component, and the air inlet fin assembly 2 is arranged in the accommodating chamber 17; the box body partition 11, the bottom plate 9 and the outer frame form a cooling chamber 18 that allows cooling airflow to pass through.

[0036] The airflow transfer device is located in the accommodating cavity 17. Specifically, one airflow transfer device is arranged at the air inlet end of the air inlet fin assembly 2, and the air outlet direction is parallel to the extension direction of the air inlet fin assembly 2, and is used to blow airflow into the air inlet fin assembly 2; one airflow transfer device is arranged at the air outlet end of the air inlet fin assembly 2, and the air outlet direction is perpendicular to the extension direction of the air inlet fin assembly 2, and is used to suck out the airflow in the air inlet fin assembly 2 to accelerate the flow speed of the gas in the air inlet fin assembly 2.

[0037] In the accommodating chamber 17, all the airflow transmission devices are relayed in sequence to form a circulating air duct, which at least covers some of the heat-generating components in the charging module. After the airflow exchanges heat with the heat-generating components, the heat is carried to the air inlet fin assembly 2. The high-temperature airflow exchanges heat with the air inlet fin assembly 2, the airflow cools down, and the air inlet fin assembly 2 heats up. The air inlet fin assembly 2 can exchange heat with the cooling airflow through the box partition 11, thereby transferring the heat in the accommodating chamber 17 to the cooling chamber 18, improving the heat dissipation efficiency in the accommodating chamber 17, ensuring that the components in the accommodating chamber 17 can operate within a suitable temperature range, and realizing the combination of the internal heat dissipation system and the external heat dissipation system.

[0038] An external fan 14 and a first air duct 31 are provided in the cooling chamber 18, and the external fan 14 can deliver low-temperature gas in the environment into the first air duct 31. The extension direction of the air inlet fin assembly 2 is perpendicular to the air outlet direction of the first air duct 31, so the airflow carrying heat exchanges heat with the low-temperature airflow in the first air duct 31 during the process of passing through the entire air inlet fin assembly 2, thereby improving the heat dissipation efficiency.

[0039] In order to fully utilize the low-temperature airflow for heat exchange, the difference between the extension length of the air inlet fin assembly 2 and the width of the first air duct 31 is within a set range. In this embodiment, the extension length of the air inlet fin assembly 2 is substantially the same as the width of the first air duct 31, ensuring that all low-temperature airflow entering the first air duct 31 can exchange heat with the high-temperature airflow in the air inlet fin assembly 2 through the box partition 11.

[0040] On the basis of the above structure, a box partition slope 15 is formed on the box partition 11, so that the box partition 11 has two steps. This shape is similar to the staggered design in buildings. A large enough installation space is reserved for the external fan 14 on the air inlet side of the cooling chamber 18, and more low-temperature gas is blown into the cooling chamber 18 by the large-sized external fan 14; after crossing the box partition slope 15, the height of the cooling chamber 18 becomes smaller and the height of the accommodating chamber 17 becomes higher, so that more parts and fans can be accommodated in the accommodating chamber 17, and the internal gas flow is smoother. After the height of the cooling chamber 18 becomes smaller, the air flow speed therein becomes faster, and a negative pressure is formed in the cooling chamber 18, which helps more external low-temperature gas to be sent into the cooling chamber 18, thereby improving the heat exchange capacity.

[0041] Theoretically, the air inlet fin assembly 2 located at the air inlet end or the air outlet end of the first air duct 31 can perform heat exchange and cool down the interior of the accommodating cavity 17. In view of the fact that the air flow temperature at the air inlet end of the first air duct 31 is lower than the air flow temperature at the air outlet end, in this embodiment, the air inlet fin assembly 2 is aligned with the air inlet end of the first air duct 31 and arranged on both sides of the box partition 11, so as to achieve a better cooling effect.

[0042] like Figure 5 and Figure 6 As shown, an outlet fin assembly 8 is provided in the first air duct 31, and the outlet fin assembly 8 is located below the inlet fin assembly 2, that is, the outlet fin assembly 8 is preferably provided at the inlet end of the first air duct 31. The inlet fin assembly 2 performs heat exchange with the outlet fin assembly 8 through the box partition 11, the inlet fin assembly 2 cools down, and the outlet fin assembly 8 heats up. After the low-temperature gas enters the first air duct 31, it performs heat exchange with the outlet fin assembly 8, the outlet fin assembly 8 cools down, and the heated gas flows to the outlet end of the cooling chamber 18.

[0043] The extension direction of the air outlet fin assembly 8 is perpendicular to the extension direction of the air inlet fin assembly 2. Figure 6 The middle arrow indicates the direction of air flow in the cooling chamber 18. The outlet fin assembly 8 is composed of a plurality of fins arranged at intervals. The extension direction of the fins is consistent with the direction of the heat dissipation airflow in the first air duct 31. The fins will not hinder the normal flow of the heat dissipation gas, and an airflow channel is formed between two adjacent fins to prevent a large amount of gas from colliding with each other and reducing the flow rate. The extension direction of the fins is perpendicular to the extension direction of the inlet fin assembly 2. The high-temperature airflow at the inlet end or the outlet end of the inlet fin assembly 2 can exchange heat with the low-temperature airflow at the entrance of the first air duct 31 to improve the heat dissipation efficiency.

[0044] Since the box partition slope 15 divides the box partition 11 into two parts of different heights, the air outlet fin assembly 8 is blocked at the box partition slope 15 and cannot continue to extend. In this embodiment, the cooling chamber 18 is provided with a partition heat dissipation fin 12, the air outlet fin assembly 8 is located between the air inlet end of the first air duct 31 and the box partition slope 15, and the partition heat dissipation fin 12 is located between the box partition slope 15 and the air outlet end of the first air duct 31, so that the heat dissipation fin runs through the first air duct 31, thereby improving the heat dissipation efficiency.

[0045] The partition heat dissipation fins 12 are connected to the box partition 11, and heat conduction can be directly carried out between the two. The heat generated by the heat generating components in the accommodating cavity 17 increases the temperature of the air in the accommodating cavity 17, and the high-temperature hot air exchanges heat with the box partition 11, and the box partition 11 then exchanges heat with the partition heat dissipation fins 12, thereby cooling the heat generating components in the accommodating cavity 17.

[0046] It is understandable that the partition heat dissipation fins 12 may not be connected to the box partition 11, as long as heat exchange can be achieved. Similarly, the air outlet fin assembly 8 and the air inlet fin assembly 2 may not be connected to the box partition 11, as long as heat exchange can be achieved.

[0047] The specific processing method of each group of fins in the box body 1 is not limited. In this embodiment, all the fins and the box body 1 are die-cast as a whole, which is easy to process and has high heat conduction efficiency. There is no need to add a sealing structure between the fin and the inner wall of the box body 1, and between the fin and the box body partition 11, and the processing efficiency is high.

[0048] In order to improve the heat transfer efficiency, Figures 5 to 7 As shown, a partition boss 16 is provided on the side of the box partition 11 located in the accommodating cavity 17, and the heat generating components are attached to the partition boss 16. The heat generating components directly transfer heat to the first air duct 31 through the partition boss 16 and the box partition 11, and the heat generating components are efficiently cooled after heat exchange.

[0049] Furthermore, a thermally conductive insulating silicone pad is placed on the partition boss 16, and the thermally conductive insulating silicone pad is tightly attached to the heat-generating component or circuit board, which can conduct the heat in the accommodating cavity 17 to the outside of the box body 1 or the cooling cavity 18 as quickly as possible, thereby improving the heat dissipation efficiency.

[0050] like Figures 3 to 6 As shown, the air outlet fin assembly 8 and / or the air inlet fin assembly 2 respectively include at least two fins arranged at intervals, and one end of each fin connected to the box partition 11 is wider than the other end away from the box partition 11. That is, the air outlet fin assembly 8 and / or the air inlet fin assembly 2 is trapezoidal, and the airflow forms a certain degree of turbulence between the fins, which makes the airflow contact with the fins more fully, the heat dissipation area is larger, and the heat dissipation efficiency is high.

[0051] Furthermore, the fins of the air inlet fin assembly 2 are provided with fin bosses 21, which protrude from the fin surface toward the cooling air flow channel. It can be understood that the cooling air flow channel is a structure for air to pass between two adjacent fins. The fin bosses 21 can hinder the flow of air, prolong the contact time between the air flow and the air inlet fin assembly 2, and make the heat exchange more sufficient, thereby improving the heat exchange efficiency.

[0052] like Figures 1 to 5 As shown, the circulating air duct includes a second air duct 32 and a third air duct 33, the second air duct 32 is located in the air inlet fin assembly 2, and the third air duct 33 is located between part of the heat generating components and the side wall of the box body 1. The airflow in the accommodating cavity 17 will hit the side wall of the box body 1 after passing through the second air duct 32 and the third air duct 33. Under the action of the rebound force of the side wall and the action of the airflow transmission device at the air inlet end of the air inlet fin assembly 2, the airflow in the accommodating cavity 17 is annular, and the heat exchange efficiency is high.

[0053] When designing the heat dissipation structure of the charging module, it is necessary to ensure that the charging module can work properly. Therefore, the wiring of the circuit board (PCB) must be roughly designed first, and then the positions of the second air duct 32 and the third air duct 33 are determined by using the positions of the components in the PCB and the PCB structure. The wiring structure of the PCB cannot be changed significantly, but it can be adjusted slightly to ensure smooth airflow and more adequate heat exchange.

[0054] The specific structure of the airflow transmission device is not limited, as long as it can make the gas flow, and can be but not limited to a fan. In this embodiment, the airflow transmission device includes a first fan 71 arranged at the air inlet end of the air inlet fin assembly 2 and a second fan 72 arranged at the air outlet end of the air inlet fin assembly 2. The air outlet direction of the first fan 71 is parallel to the extension direction of the second air duct 32, and the air outlet end of the second fan 72 faces the third air duct 33.

[0055] In addition to adding the air inlet fin assembly 2 to form the second air duct 32 , no other baffles are added in the accommodating cavity 17 to form a pipeline or channel structure. Instead, the existing components in the accommodating cavity 17 are used to form a channel with the box body 1 .

[0056] In this embodiment, the third air duct 33 is located between a row of capacitor components 63 and the wall of the box body 1, and the capacitor components 63 are used to block the cooling airflow from flowing toward the inside of the accommodating cavity 17, but first flow along the periphery, so that the temperature reduction range is wider. It is understandable that it is also feasible to replace the capacitor component 63 with a relay or other device, and the third air duct 33 for the cooling airflow can also be formed.

[0057] At the end of the third air duct 33, a first circuit board 61 and a second circuit board 62 are arranged in the box 1. Specifically, the first circuit board 61 and the second circuit board 62 are stacked one above the other to form a fourth air duct 34, and the third air duct 33 and the fourth air duct 34 extend in the same direction.

[0058] On the basis of the above structure, the air flow transmission device further includes a third fan 73. Specifically, the third fan 73 is located outside the end of the fourth air duct 34, and the third fan 73 is located between the input terminal 66 and the output terminal 67. The third fan 73 can suck out the cooling air in the fourth air duct 34 and blow it toward the locations of the inductor assembly 64 and other components, so that the cooling air flow forms a circulation in the accommodating cavity 17.

[0059] Specifically, the air inlet fin assembly 2 is arranged at one end of the accommodating cavity 17, and the third fan 73 is arranged at the other end of the accommodating cavity 17 away from the air inlet fin assembly 2. The third fan 73 is used to change the flow direction of the cooling airflow in the circulating air duct, so that the cooling airflow can be detoured as far as possible in the accommodating cavity 17 to exchange heat with more heat-generating components, thereby achieving a good cooling effect.

[0060] Since the third fan 73 is far away from the air inlet fin assembly 2, the cooling gas has a lower flow velocity after leaving the third fan 73 for a certain distance, which is not conducive to forming an airflow circulation in the accommodating chamber 17. In order to solve this problem, the airflow transmission device also includes a fourth fan 74. The fourth fan 74 is located between the first fan 71 and the third fan 73, and can make the cooling airflow leaving the third fan 73 flow quickly to the first fan 71, so as to form a stable airflow circulation in the accommodating chamber 17.

[0061] The inductor assembly 64 (including but not limited to common mode inductors and differential mode inductors) is disposed between the third fan 73 and the fourth fan 74, and can perform heat exchange with the cooling airflow blown out by the third fan 73. The relay 68 is located between the inductor assembly 64 and the wall, and is also basically located on the airflow channel between the third fan 73 and the fourth fan 74, and can perform heat exchange with the gas in the airflow channel.

[0062] When the temperature inside the accommodating chamber 17 is relatively high or the space area is relatively large, the air flow transmission device further includes a fifth fan 75. The fifth fan 75 is located between the first fan 71 and the fourth fan 74, and can increase the flow rate of the cooling gas nearby, so that these gases can smoothly enter the air inlet fin assembly 2 to exchange heat with the air inlet fin assembly 2, thereby reducing the temperature in the accommodating chamber 17. The wind blown by the fifth fan 75 can reach the first fan 71 after passing through the capacitor 65 (including but not limited to the resonant capacitor and the film capacitor), realizing the circulation of the gas in the accommodating chamber 17.

[0063] In order to improve the heat dissipation efficiency, a box heat dissipation fin 13 can be provided on the outer wall surface of the box body 1. The high-temperature gas in the accommodating cavity 17 can exchange heat with the box body 1, the high-temperature gas cools down, and the box body 1 heats up. The heat on the box body 1 is transferred to the box heat dissipation fin 13 on the outer wall surface, and the box heat dissipation fin 13 exchanges heat with the low-temperature air of the surrounding environment, thereby reducing the temperature in the accommodating cavity 17, forming a multi-path heat dissipation method, and the heat dissipation speed is faster.

[0064] A row of capacitor components 63 are arranged along the wall of the box body 1, and a third air duct 33 is formed between the two; a fourth air duct 34 is formed between the first circuit board 61 and the second circuit board 62. The arrangement of the capacitor components 63, the first circuit board 61 and the second circuit board 62 can prevent the gas in the third air duct 33 and the fourth air duct 34 from being sucked away by the fourth fan 74 and the fifth fan 75, so that the cooling airflow can run close to the side of the box body 1 for a circle and perform heat exchange with as many heat-generating components as possible.

[0065] On the basis of the above structure, the charging module further includes duct paper 4. The duct paper 4 is covered on the air inlet fin assembly 2, and the second air duct 32 is located within the range surrounded by the duct paper 4. The duct paper 4 allows the high-temperature airflow to flow only in the second air duct 32, and will not diffuse outside the second air duct 32, so that the heat exchange between the high-temperature gas and the air inlet fin assembly 2 is more sufficient.

[0066] Of course, the charging module may also not be provided with the duct paper 4, and the second air duct 32 is located between the air inlet fin assembly 2, the upper cover 5 and the box partition 11, which can also basically prevent the high-temperature airflow from flowing out of the second air duct 32 before heat exchange with the air inlet fin assembly 2.

[0067] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. Charging module, characterized in that: include: A box body (1) is provided with a box body partition (11) inside, wherein the box body partition (11) divides the box body (1) into a sealed accommodating chamber (17) and a cooling chamber (18) that allows cooling airflow to pass through, and a heat generating component is arranged in the accommodating chamber (17); an air inlet fin assembly (2) disposed in the accommodating cavity (17), the air inlet fin assembly (2) being capable of performing heat exchange with the cooling airflow through the box partition (11); and At least two airflow transfer devices are located in the accommodating cavity (17), wherein one of the airflow transfer devices is arranged at the air inlet end of the air inlet fin assembly (2) for blowing airflow into the air inlet fin assembly (2); and one of the airflow transfer devices is arranged at the air outlet end of the air inlet fin assembly (2) for sucking out the airflow in the air inlet fin assembly (2); in the accommodating cavity (17), all the airflow transfer devices are connected in sequence to form a circulating air duct, and the circulating air duct at least covers part of the heat generating components in the charging module; A first air duct (31) is provided in the cooling cavity (18), the extension direction of the air inlet fin assembly (2) is perpendicular to the air outlet direction of the first air duct (31), and the difference between the extension length of the air inlet fin assembly (2) and the width of the first air duct (31) is within a set range.

2. The charging module according to claim 1, characterized in that: The air inlet fin assembly (2) is aligned with the air inlet end of the first air duct (31) and is arranged on both sides of the box partition (11).

3. The charging module according to claim 1, characterized in that: An air outlet fin assembly (8) is provided in the first air duct (31); the extension direction of the air outlet fin assembly (8) is perpendicular to the extension direction of the air inlet fin assembly (2); and the air outlet fin assembly (8) is located below the air inlet fin assembly (2).

4. The charging module according to claim 3, characterized in that: The air outlet fin assembly (8) and / or the air inlet fin assembly (2) respectively comprises at least two fins arranged at intervals, and one end of each fin connected to the box partition (11) is wider than the other end away from the box partition (11).

5. The charging module according to any one of claims 1 to 4, characterized in that: The circulating air duct comprises a second air duct (32) and a third air duct (33); the second air duct (32) is located in the air inlet fin assembly (2), and the third air duct (33) is located between part of the heat-generating components and the side wall of the box body (1).

6. The charging module according to claim 5, characterized in that: The charging module further comprises air duct paper (4) and an upper cover (5), wherein the upper cover (5) is buckled on the box body (1), and the upper cover (5), the box body (1) and the box body partition (11) enclose the accommodating cavity (17); the air duct paper (4) is covered on the air inlet fin assembly (2), and the second air duct (32) is located within the range enclosed by the air duct paper (4).

7. The charging module according to claim 6, characterized in that: A first circuit board (61) and a second circuit board (62) are arranged in a spaced relationship in the box body (1); the circulating air duct further comprises a fourth air duct (34); the fourth air duct (34) is located between the first circuit board (61) and the second circuit board (62); and the third air duct (33) and the fourth air duct (34) extend in the same direction.

8. The charging module according to claim 5, characterized in that: The air flow transmission device comprises a first fan (71) arranged at the air inlet end of the air inlet fin assembly (2), and a second fan (72) arranged at the air outlet end of the air inlet fin assembly (2), wherein the air outlet direction of the first fan (71) is parallel to the extension direction of the second air duct (32), and the air outlet end of the second fan (72) faces the third air duct (33).

9. The charging module according to claim 1, characterized in that: The air flow transmission device also includes a third fan (73); the air inlet fin assembly (2) is arranged at one end of the accommodating cavity (17); the third fan (73) is arranged at the other end of the accommodating cavity (17) away from the air inlet fin assembly (2); and the third fan (73) is used to change the flow direction of the cooling air flow in the circulating air duct.

10. The charging module according to any one of claims 1 to 4, characterized in that: The cooling cavity (18) is provided with a partition heat dissipation fin (12), the box partition (11) is connected to the partition heat dissipation fin (12), and the partition heat dissipation fin (12) can perform heat exchange with the heat generating component in the accommodating cavity (17) through the box partition (11).

11. The charging module according to any one of claims 1 to 4, characterized in that: The fins of the air inlet fin assembly (2) are provided with fin bosses (21), and the fin bosses (21) protrude from the fin surface in the direction of the cooling air flow channel.

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