Charging device

Abstract

The utility model discloses a kind of charging device, it is related to electronic equipment technical field, wherein, charging device includes shell, charging module and cooling fan, shell has accommodating cavity and with the air inlet and air outlet of accommodating cavity communication;Air inlet and air outlet are located in the different side wall of shell;Charging module includes main control board and circuit module set on main control board;Main control board is located in accommodating cavity and has opposite first side and second side, first side and the inner wall of shell between limit first air duct, second side and the inner wall of shell between limit second air duct;Air inlet, first air duct, second air duct and air outlet are sequentially communicated to form cooling air duct;Cooling fan is located in cooling air duct, for guiding air flow along cooling air duct;Air inlet is projected on main control board in the thickness direction of main control board;The utility model solves the problem that the problem of the prior art that the poor heat dissipation effect leads to the decline of charging efficiency.

Description

Technical Field

[0001] This utility model relates to the field of electronic equipment technology, and in particular to a charging device. Background Technology

[0002] With the increasing demand for charging multiple devices, fast charging for mobile phones, tablets, and laptops has become a basic requirement for charging devices, leading to the development of high-power, multi-interface charging devices. These devices need to integrate AC-DC conversion circuits and multiple charging output units within their casing. The power components generate significantly more heat under continuous high load operation. High temperatures not only reduce charging efficiency but also force the device to derating its output, making it difficult to maintain a fast charging experience for multiple devices simultaneously. Utility Model Content

[0003] The main purpose of this invention is to provide a charging device that aims to solve the problem of poor heat dissipation leading to decreased charging efficiency in the prior art.

[0004] To achieve the above objectives, the present invention proposes a charging device comprising: a housing having a accommodating cavity and an air inlet and an air outlet communicating with the accommodating cavity; the air inlet and the air outlet are located on different side walls of the housing; The charging module includes a main control board and a circuit module disposed on the main control board; The main control board is disposed in the accommodating cavity and has a first side and a second side opposite to each other. The first side defines a first air duct between itself and the inner wall of the housing, and the second side defines a second air duct between itself and the inner wall of the housing. The air inlet, the first air duct, the second air duct, and the air outlet are connected in sequence to form a heat dissipation air duct; A cooling fan, located within the cooling duct, is used to guide airflow along the cooling duct. The projection of the air inlet onto the main control board is in the thickness direction.

[0005] In one embodiment, the charging module further includes a first circuit board electrically connected to the main control board, the thickness direction of the first circuit board intersecting the thickness direction of the main control board, the housing having a first sidewall and a second sidewall opposite to each other along the thickness direction of the first circuit board, the first circuit board being spaced apart from the first sidewall and the second sidewall respectively, and electronic components being disposed on the first circuit board.

[0006] In one embodiment, the charging module further includes a second circuit board electrically connected to the main control board. The first circuit board and the second circuit board are spaced apart along the thickness direction of the first circuit board. The thickness direction of the second circuit board is the same as the thickness direction of the first circuit board and intersects with the thickness direction of the main control board. At least some of the electronic components are disposed between the first circuit board and the second circuit board.

[0007] In one embodiment, the main control board has at least one first ventilation hole, which connects the first air duct and the second air duct; And / or, at least one second ventilation hole is provided on the first circuit board; And / or, at least one third ventilation hole is provided on the second circuit board.

[0008] In one embodiment, the first circuit board is close to the first sidewall, the second circuit board is close to the second sidewall, and the distance between the first circuit board and the edge of the main control board facing the first sidewall is D1, wherein D1 satisfies: D1≥1mm; And / or, the distance between the second circuit board and the edge of the main control board facing the second sidewall is D2, wherein D2 satisfies: D2≥1mm.

[0009] In one embodiment, at least a portion of the periphery of the main control board is spaced from the inner wall of the housing, and the periphery of the main control board and the inner wall of the housing form an air passage gap, through which the first air duct connects to the second air duct.

[0010] In one embodiment, a support is provided inside the accommodating cavity, which divides the accommodating cavity into a first sub-cavity and a second sub-cavity. The main control board is located in the first sub-cavity. A telescopic cable module is provided in the second sub-cavity. The telescopic cable module is electrically connected to the charging module. The charging connector on the telescopic cable module extends out of the housing and is telescopically movable relative to the housing. A power connector electrically connected to the charging module is provided on the housing.

[0011] In one embodiment, the bracket has a cavity that communicates with the second sub-cavity and forms at least a portion of the second sub-cavity. The cavity is connected to the second air duct, and one side of the cavity is connected to the air outlet. The cooling fan is disposed within the cavity.

[0012] In one embodiment, the charging module further includes a first circuit board and a second circuit board electrically connected to the main control board. The thickness directions of the first circuit board and the second circuit board intersect with the thickness direction of the main control board, and the first circuit board and the second circuit board are spaced apart. A ventilation hole is provided through the bracket between the first circuit board and the second circuit board, and the ventilation hole connects the second air duct and the second sub-cavity. And / or, a cooling fan is provided in the second sub-cavity, the air inlet of the cooling fan faces the second air duct, the air outlet of the cooling fan faces the air outlet, and the cooling fan is used to guide the air in the first air duct and the second air duct to flow to the air outlet through the air passage.

[0013] In one embodiment, the second air duct is formed by the second side, the bracket, and the inner wall of the housing.

[0014] In one embodiment, the cooling fan is disposed in the cavity and located at the air passage, and a sealing ring is provided between the cooling fan and the bracket, the sealing ring surrounding the air passage.

[0015] In one embodiment, the distance between the cooling fan and the air outlet is less than the distance between the cooling fan and the air inlet.

[0016] In one embodiment, the air inlet direction is perpendicular to the air outlet direction.

[0017] In one embodiment, the circuit module includes a transformer disposed within the second air duct; the air inlet and the first side are disposed opposite to each other, and the air inlet, the transformer, and the cooling fan are arranged sequentially along the thickness direction of the main control board; And / or, the transformer is further provided with heat sinks, at least a portion of which are located within the second air duct.

[0018] In one embodiment, the inner wall of the housing has a first mounting portion corresponding to the air inlet, and the first mounting portion is provided with a first protective net; And / or, the inner wall of the housing has a second mounting portion corresponding to the position of the air outlet, and the second mounting portion is provided with a second protective net.

[0019] In one embodiment, the housing is provided with a fan button, which is electrically connected to the cooling fan and is used for the user to manually control the start or stop of the cooling fan.

[0020] The technical solution of this utility model divides the accommodating cavity into a first air duct and a second air duct located on opposite sides of the main control board by setting a main control board. An air inlet, the first air duct, the second air duct, and an air outlet are sequentially connected to form a heat dissipation air duct. A cooling fan is also provided, allowing the cooling airflow to flow directionally along the sequentially connected first and second air ducts under the guidance of the cooling fan, forming an orderly heat dissipation path. Compared with the prior art, this application divides the accommodating cavity into two independent and orderly connected air duct regions by using the main control board, allowing the cooling airflow to flow along the surfaces on both sides of the main control board according to a preset path, fully exchanging heat with the power devices, avoiding local heat accumulation caused by disordered airflow, and effectively improving heat dissipation efficiency. Simultaneously, by setting an air inlet... The air inlet and outlet are located on different side walls of the housing, which allows the heat dissipation air duct to have a longer extension path inside the housing. This prolongs the heat exchange time between the cooling airflow and the main control board and circuit modules, ensuring that the airflow can fully remove heat during the flow through the first and second air ducts, further improving the heat dissipation effect. This application also sets the projection of the air inlet onto the main control board in the thickness direction, so that the cooling airflow entering from the air inlet blows directly onto the surface of the main control board along the thickness direction of the main control board. As the core heat-generating component with the most concentrated heat in the charging device, the main control board, with its surface facing the air inlet direction, can form the largest direct contact area between the cooling air and the surface of the main control board, thereby enhancing the convective heat transfer intensity of the main control board surface and improving the overall heat dissipation efficiency. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 A schematic diagram of one embodiment of the charging device provided by this utility model; Figure 2 for Figure 1 Another implementation diagram of the structure; Figure 3 for Figure 1 A cross-sectional structural schematic diagram of one embodiment; Figure 4 for Figure 3 A cross-sectional structural view of one embodiment; Figure 5 for Figure 1 A cross-sectional structural schematic diagram of another embodiment; Figure 6 for Figure 1A schematic diagram of the exploded structure; Figure 7 for Figure 1 Partial structural diagram; Figure 8 for Figure 7 A schematic diagram of the cross-sectional structure.

[0023] Explanation of icon numbers: 1. Housing; 1a. First sidewall; 1b. Second sidewall; 11. Air inlet; 11a. First protective mesh; 12. Air outlet; 12a. Second protective mesh; 13a. First air duct; 13b. Second air duct; 14. Fan button; 2. Bracket; 21. Vent; 22. Cavity; 3. Charging module; 31. Main control board; 31a. Air gap; 31b. First ventilation hole; 311. First side; 312. Second side; 32. First circuit board; 32a. Transformer; 33. Second circuit board; 4. Power connector; 5. Telescopic line module; 6. Cooling fan.

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0026] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0027] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0028] This utility model proposes a charging device.

[0029] Please see Figures 1 to 3 In one embodiment of this utility model, the charging device includes a housing 1, a charging module 3, and a cooling fan 6. The housing 1 has a receiving cavity and an air inlet 11 and an air outlet 12 communicating with the receiving cavity. The air inlet 11 and the air outlet 12 are located on different side walls of the housing 1. The charging module 3 includes a main control board 31 and a circuit module disposed on the main control board 31. The main control board 31 is disposed in the receiving cavity and has a first side 311 and a second side 312 opposite to each other. The first side 311 defines a first air duct 13a between itself and the inner wall of the housing 1, and the second side 312 defines a second air duct 13b between itself and the inner wall of the housing 1. The air inlet 11, the first air duct 13a, the second air duct 13b, and the air outlet 12 are sequentially connected to form a cooling air duct. The cooling fan 6 is disposed in the cooling air duct and is used to guide air to flow along the cooling air duct. The projection of the air inlet 11 in the thickness direction of the main control board 31 falls on the main control board 31.

[0030] It should be noted that, in this embodiment, the shape of the housing 1 is not specifically limited. For example, such as Figure 1 and Figure 2 As shown, the overall shape of the housing 1 is set as two stacked cuboids. The air inlet 11 and the air outlet 12 can be located on two opposite side walls of the housing 1, or on two adjacent side walls of the housing 1, as long as they can connect to the heat dissipation channel for heat dissipation. No further restrictions are imposed here. In some other possible embodiments, the shape of the housing 1 can be set as a triangular prism, pentagonal prism, sphere, ellipsoid, or irregular shape, and the air inlet 11 and the air outlet 12 can be correspondingly set on the outer wall of the housing 1. No specific limitations are imposed here.

[0031] Please refer to Figure 3 The thickness direction of the main control board 31 is the Y direction marked in the figure. The first side 311 of the main control board 31 and the inner wall of the housing 1 are spaced apart and form a first air duct 13a. The second side 312 of the main control board 31 and the inner wall of the housing 1 are spaced apart and form a second air duct 13b. The first air duct 13a and the second air duct 13b are located on both sides of the main control board 31 in the Y direction. There are various conduction structures between the first air duct 13a and the second air duct 13b. For example, air guide holes can be opened on the main control board 31 to connect the first air duct 13a and the second air duct 13b, or air guide holes can be formed between the side of the main control board 31 and the inner wall of the housing 1 to connect the first air duct 13a and the second air duct 13b, or the housing 1 can be provided with a separate air guide channel to connect the first air duct 13a and the second air duct 13b. The specific position and shape of the conduction structure are not specifically limited here, as long as the first air duct 13a and the second air duct 13b are connected.

[0032] In this embodiment, the cooling fan 6 can be located at any position inside the housing 1. For example, the cooling fan 6 can be located in the first air duct 13a, or in the second air duct 13b, or partially in the first air duct 13a and partially in the second air duct 13b. As long as the cooling fan 6 can guide the airflow from the air inlet 11 into the first air duct 13a and through the second air duct 13b to be discharged from the air outlet 12 when it is working, the type, specific structure, and air outlet orientation of the cooling fan 6 can be adapted and set according to actual needs.

[0033] Optionally, to enable the charging function, the charging device may also be equipped with a charging cable electrically connected to the charging module 3, or a charging interface for plugging in the charging cable, or a combination of both, such as a USB-A interface, a USB-C interface, a TYPE-C interface, or a combination of multiple interfaces, to adapt to the charging needs of different electronic devices, thereby enabling the output of electrical energy to meet the charging requirements of different devices. No specific limitation is made to the output form of the charging device here. Optionally, the charging cable is a retractable cable.

[0034] It is understandable that the projection of the air inlet 11 is located within the surface area of ​​the main control board 31 along the thickness direction of the main control board 31. With this setting, the external air entering the housing 1 from the air inlet 11 blows directly onto the surface of the main control board 31, so that the cooling air forms a large-area contact with the surface of the main control board 31, thereby enhancing the convective heat transfer effect of the surface of the main control board 31.

[0035] Understandably, when the charging device is in operation, driven by the cooling fan 6, external air enters the cooling duct through the air inlet 11 and flows sequentially through the first air duct 13a and the second air duct 13b, finally exiting the accommodating cavity through the air outlet 12 to dissipate the heat inside the accommodating cavity to the outside. During this process, since the projection of the air inlet 11 on the thickness direction of the main control board 31 falls on the main control board 31, the air enters the housing 1 and blows directly onto the surface of the main control board 31, exchanging heat with the surface of the main control board 31 and carrying away the heat generated by the main control board 31 and the circuit modules on the main control board 31. Subsequently, the air flows along the first air duct 13a and enters the second air duct 13b through the gap between the periphery of the main control board 31 and the inner wall of the housing 1, the ventilation holes on the main control board 31, or the notches on the edge of the main control board 31, further carrying away the heat on the other side of the main control board 31. Finally, the air is discharged outside the housing 1 through the air outlet 12, completing the entire heat dissipation process.

[0036] The technical solution of this utility model divides the accommodating cavity into a first air duct 13a and a second air duct 13b located on opposite sides of the main control board 31 by setting a main control board 31. An air inlet 11, the first air duct 13a, the second air duct 13b, and an air outlet 12 are sequentially connected to form a heat dissipation air duct. A cooling fan 6 is also provided to guide the cooling airflow along the sequentially connected first air duct 13a and second air duct 13b, forming an orderly heat dissipation path. Compared with the prior art, this application divides the accommodating cavity into two independent and orderly connected air duct areas by the main control board 31, allowing the cooling airflow to flow along the surfaces on both sides of the main control board 31 according to a preset path, fully exchanging heat with the power devices, avoiding local heat accumulation caused by disordered airflow, and effectively improving heat dissipation efficiency. Simultaneously, by setting an air inlet... The air inlet 11 and the air outlet 12 are located on different side walls of the housing 1, which makes the heat dissipation air duct have a longer extension path inside the housing 1. This prolongs the heat exchange time between the cooling airflow and the main control board 31 and the circuit module, ensuring that the airflow can fully carry away heat during the flow through the first air duct 13a and the second air duct 13b, and further improves the heat dissipation effect. In addition, this application also sets the projection of the air inlet 11 on the thickness direction of the main control board 31 to fall on the main control board 31, so that the cooling airflow entering from the air inlet 11 blows directly onto the surface of the main control board 31 along the thickness direction of the main control board 31. As the core heat-generating component with the most concentrated heat in the charging device, the main control board 31 can form the maximum direct contact area between the cooling air and the surface of the main control board 31 with the surface facing the air inlet direction, thereby enhancing the convective heat transfer intensity of the surface of the main control board 31 and improving the overall heat dissipation efficiency. Because the aforementioned heat dissipation duct structure can efficiently remove the heat generated by the main control board 31 and the circuit module, it effectively controls the temperature rise inside the charging device, enabling the charging device to maintain a low temperature under long-term high-load operation, avoiding the charging device from triggering derating protection due to overheating, thereby ensuring the continuous output capability of multiple devices charging simultaneously.

[0037] In one implementation, please refer to Figure 3 and Figure 4 The charging module 3 further includes a first circuit board 32 electrically connected to the main control board 31. The thickness direction of the first circuit board 32 intersects the thickness direction of the main control board 31. The housing 1 has a first sidewall 1a and a second sidewall 1b opposite to each other along the thickness direction of the first circuit board 32. The first circuit board 32 is spaced apart from the first sidewall 1a and the second sidewall 1b respectively. Electronic components are provided on the first circuit board 32.

[0038] It should be noted that, in this embodiment, the charging module 3 includes a first circuit board 32 electrically connected to the main control board 31. Optionally, the main control board 31 and the first circuit board 32 are electrically connected by wires, ribbon cables, or connectors, so that the first circuit board 32 can receive control signals or power output from the main control board 31.

[0039] Please refer to Figure 3 The thickness direction of the first circuit board 32 is as follows: Figure 3 In the X direction shown, the thickness direction of the first circuit board 32 intersects the thickness direction of the main control board 31. For example, the thickness direction of the first circuit board 32 is arranged perpendicular to the thickness direction of the main control board 31 and is inserted into the main control board 31; thus, the first circuit board 32 and the main control board 31 form a spatially intersecting layout within the accommodating cavity, which is beneficial for making reasonable use of the three-dimensional space inside the housing 1 and reducing the overall volume of the charging device.

[0040] It is understood that in this embodiment, the housing 1 has a first sidewall 1a and a second sidewall 1b that are opposite each other along the thickness direction of the first circuit board 32; the first circuit board 32 is spaced apart from the first sidewall 1a and the second sidewall 1b respectively, that is, the first circuit board 32 has a gap between itself and the two sidewalls of the housing 1 in its thickness direction. Thus, both sides of the first circuit board 32 are located in the second air duct 13b, which facilitates airflow from both sides of the first circuit board 32 to form an airflow path around the first circuit board 32, so as to dissipate heat on both sides of the first circuit board 32 in the thickness direction at the same time, thereby increasing the heat dissipation area.

[0041] It should be noted that electronic components can be power devices or control devices such as resistors, capacitors, inductors, diodes, and MOSFETs.

[0042] In this embodiment, when the charging device is working, the cooling fan 6 guides air to flow along the first air duct 13a, and enters the second air duct 13b through the gap between the periphery of the main control board 31 and the inner wall of the housing 1, the ventilation holes on the main control board 31, or the notches on the edge of the main control board 31, further carrying away the heat from the other side of the main control board 31. Since the first circuit board 32 is disposed on the main control board 31 and is spaced apart from the first side wall 1a and the second side wall 1b of the housing 1, the airflow can flow over both sides and the surface of the first circuit board 32 when passing through the first air duct 13a and the second air duct 13b, effectively carrying away the heat generated by the first circuit board 32 and the electronic components disposed on the first circuit board 32.

[0043] Further, please refer to Figure 4The charging module 3 further includes a second circuit board 33 electrically connected to the main control board 31. The first circuit board 32 and the second circuit board 33 are spaced apart along the thickness direction of the first circuit board 32. The thickness direction of the second circuit board 33 is the same as the thickness direction of the first circuit board 32 and intersects with the thickness direction of the main control board 31. At least some of the electronic components are disposed between the first circuit board 32 and the second circuit board 33.

[0044] Similarly, the main control board 31 and the second circuit board 33 are electrically connected by wires, ribbon cables or connectors, so that the second circuit board 33 can receive control signals or power output from the main control board 31.

[0045] In this embodiment, the first circuit board 32 and the second circuit board 33 are arranged opposite to each other in the thickness direction of the first circuit board 32, with a gap between them forming a space for airflow. Thus, the first circuit board 32 and the second circuit board 33 form a multi-layered layout within the accommodating cavity, spatially intersecting with the main control board 31, effectively utilizing the internal three-dimensional space of the housing 1 and providing more circuit board mounting area within a limited space. Exemplarily, the first circuit board 32 and the second circuit board 33 are arranged parallel to each other, forming an airflow channel between them, allowing airflow to pass between the first circuit board 32 and the second circuit board 33, between the first circuit board 32 and the first sidewall 1a, and between the second circuit board 33 and the second sidewall 1b.

[0046] It is understood that the positions of the electronic components on the first circuit board 32 and the second circuit board 33 can be flexibly adjusted according to actual layout requirements. Optionally, some electronic components may be disposed on the surface of the first circuit board 32 facing the second circuit board 33, and some electronic components may be disposed on the surface of the second circuit board 33 facing the first circuit board 32. That is, at least some electronic components on the first circuit board 32 and the second circuit board 33 are arranged facing each other, so that these electronic components are located in the gap space between the first circuit board 32 and the second circuit board 33. Alternatively, some electronic components may be disposed on the surface of the first circuit board 32 away from the second circuit board 33, and some electronic components may be disposed on the surface of the second circuit board 33 away from the first circuit board 32. That is, at least some electronic components on the first circuit board 32 and the second circuit board 33 are arranged away from each other, so that these electronic components are located in the space outside the first circuit board 32 and the second circuit board 33. In other words, electronic components can be disposed on either side of the first circuit board 32 and / or the second circuit board 33, and this application does not impose any restrictions on this.

[0047] For example, at least some of the electronic components on the first circuit board 32 and the second circuit board 33 are located on the surfaces of the two circuit boards on opposite sides and facing the space between them. This allows the airflow channel between the first circuit board 32 and the second circuit board 33 to flow directly over the surfaces of these electronic components and directly cool them. The cooling airflow can flow directly over the surfaces of the electronic components, achieving direct air cooling of the heat-generating components and further improving the heat dissipation effect of the charging device.

[0048] In one implementation, see Figure 5 The main control board 31 has at least one first ventilation hole 31b, which connects the first air duct 13a and the second air duct 13b.

[0049] It is understood that in this embodiment, the first ventilation hole 31b penetrates the surface of the main control board 31 and connects the first air duct 13a where the first side 311 of the main control board 31 is located and the second air duct 13b where the second side 312 is located.

[0050] It should be noted that in this embodiment, the number of first ventilation holes 31b can be one or more, and the shape of the first ventilation holes 31b can be circular, elliptical, rectangular, elongated, or other regular or irregular shapes, as long as airflow can pass through. This application does not impose any restrictions on this. When there are multiple first ventilation holes 31b, the multiple first ventilation holes 31b can be distributed at intervals along the surface of the main control board 31. For example, the first ventilation holes 31b are arranged at intervals along the length or width direction of the main control board 31.

[0051] The first ventilation hole 31b allows air in the first air duct 13a to pass directly through the main control board 31 into the second air duct 13b, or air in the second air duct 13b to pass through the main control board 31 into the first air duct 13a, thereby providing a channel for airflow to switch between the air ducts on both sides of the main control board 31.

[0052] Optionally, at least one second ventilation hole is provided on the first circuit board 32. Similarly, the second ventilation hole extends through the surface of the first circuit board 32; the number of second ventilation holes can be one or more. The provision of the second ventilation hole allows airflow to pass through the first circuit board 32, flowing from one side of the first circuit board 32 to the other side, avoiding obstruction of airflow by the first circuit board 32, and allowing airflow to flow smoothly through the electronic components on both sides of the first circuit board 32.

[0053] Optionally, at least one third ventilation hole is provided on the second circuit board 33. Similarly, the third ventilation hole extends through the surface of the second circuit board 33; the number of third ventilation holes can be one or more. The arrangement of the third ventilation hole allows airflow to pass through the second circuit board 33, flowing from one side of the second circuit board 33 to the other side, avoiding obstruction of airflow by the second circuit board 33, and allowing airflow to flow smoothly through the electronic components on both sides of the second circuit board 33.

[0054] It is understandable that the first ventilation hole 31b, the second ventilation hole and the third ventilation hole can be set individually or in any combination, and there are no restrictions here.

[0055] In one implementation, see Figure 3 and Figure 4 The first circuit board 32 is close to the first sidewall 1a, the second circuit board 33 is close to the second sidewall 1b, and the distance between the first circuit board 32 and the edge of the main control board 31 facing the first sidewall 1a is D1, wherein D1 satisfies: D1≥1mm.

[0056] It is understood that the first circuit board 32 and the second circuit board 33 are respectively arranged close to the opposite side walls of the housing 1. Along the X direction, the straight distance between the edge of the main control board 31 facing the first side wall 1a and the first circuit board 32 is D1. This distance is the installation gap. The first circuit board 32 and the edge of the main control board 31 facing the first side wall 1a maintain a gap of at least 1mm to avoid interference between the first circuit board 32 and the main control board 31, and at the same time provide a flow channel for airflow.

[0057] Optionally, the distance between the second circuit board 33 and the edge of the main control board 31 facing the second sidewall 1b is D2, where D2 satisfies: D2 ≥ 1 mm. Similarly, along the X direction, the straight-line distance between the edge of the main control board 31 facing the second sidewall 1b and the second circuit board 33 is D2. This distance is the mounting gap, ensuring that there is at least a 1 mm gap between the second circuit board 33 and the edge of the main control board 31 facing the second sidewall 1b, preventing interference between the second circuit board 33 and the main control board 31, and providing a flow channel for airflow.

[0058] It is understandable that D1 and D2 are limited to ≥1mm to ensure sufficient installation space between the first circuit board 32, the second circuit board 33 and the main control board 31. This prevents contact or collision between the circuit boards due to installation errors, vibration or thermal expansion and contraction, avoids short circuits or damage to electronic components, and ensures electrical safety. At the same time, a gap of not less than 1mm forms part of the airflow channel, allowing airflow in the first air duct 13a and the second air duct 13b to flow through the gap. This prevents the first circuit board 32 and the second circuit board 33 from completely isolating the internal space of the housing 1, thus avoiding obstruction of the airflow path. It ensures that airflow can flow smoothly between the circuit boards and between the circuit boards and the housing 1, thereby ensuring heat dissipation.

[0059] The specific values ​​of D1 and D2 can be flexibly selected according to the actual structural layout and heat dissipation requirements. For example, the values ​​of D1 and D2 can be 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, 2.1mm, 2.2mm, 2.5mm, 2.8mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 6mm, 7mm, 8mm, 9mm, and 10mm. Of course, D1 can also be any value between the above adjacent values. It can be understood that D1 and D2 can be the same or different.

[0060] In one implementation, see Figure 5 At least a portion of the periphery of the main control board 31 has a gap with the inner wall of the housing 1, and the periphery of the main control board 31 and the inner wall of the housing 1 form an air passage gap 31a, through which the first air duct 13a connects to the second air duct 13b.

[0061] It is understood that in this embodiment, a certain distance is maintained between the outer peripheral edge of the main control board 31 and the inner wall surface of the housing 1. This distance can be continuous or discontinuous along the peripheral direction of the main control board 31, and is not limited here.

[0062] It is understandable that, since the main control board 31 is located in the accommodating cavity and divides the accommodating cavity into a first air duct 13a and a second air duct 13b located on opposite sides of the main control board 31, when an air passage gap 31a is formed between the periphery of the main control board 31 and the inner wall of the housing 1, the air in the first air duct 13a can flow into the second air duct 13b through the air passage gap 31a, and the air in the second air duct 13b can also flow into the first air duct 13a through the air passage gap 31a.

[0063] The distance between the periphery of the main control board 31 and the inner wall of the housing 1 can be flexibly selected according to actual heat dissipation requirements and structural layout. For example, the distance can be 0.2mm, 0.5mm, 0.6mm, 0.8mm, 1.0mm, 1.2mm, 1.5mm, 1.8mm, 2.0mm, 2.2mm, 2.5mm, 2.8mm, 3.0mm, 3.5mm, 4.0mm, 4.5mm, or 5.0mm. Of course, the distance can also be any value between the above adjacent values.

[0064] It is understood that an air passage gap may also be formed between the periphery of the first circuit board 32 and / or the second circuit board 33 and the inner wall of the housing 1, so as to connect the space in the second air duct 13b separated by the first circuit board 32 and / or the second circuit board 33.

[0065] In one implementation, see Figures 6 to 8 The cavity is provided with a support 2, which divides the cavity into a first sub-cavity and a second sub-cavity. The main control board 31 is located in the first sub-cavity. The second sub-cavity is provided with a telescopic cable module 5, which is electrically connected to the charging module 3. The charging connector on the telescopic cable module 5 extends out of the housing 1 and is telescopically movable relative to the housing 1. The housing 1 is provided with a power connector 4 that is electrically connected to the charging module 3.

[0066] It is understood that in this embodiment, the first sub-cavity and the second sub-cavity can be interconnected through openings, through holes or other connecting structures on the bracket 2, and the main control board 31 is disposed in the first sub-cavity. Since the main control board 31 is disposed in the first sub-cavity, and the first side 311 of the main control board 31 defines the first air duct 13a between itself and the inner wall of the housing 1, and the second side 312 defines the second air duct 13b between itself and the inner wall of the housing 1 and the bracket 2, the first air duct 13a and the second air duct 13b are both located in the first sub-cavity.

[0067] In this embodiment, the telescopic cable module 5 receives DC power output from the charging module 3 and charges external devices. The charging connector on the telescopic cable module 5 extends out of the housing 1 and is telescopically movable relative to the housing 1. Exemplarily, the telescopic cable module 5 includes a charging cable and a winding mechanism. One end of the charging cable is electrically connected to the charging module 3, and the other end is provided with a charging connector. The charging connector extends out of the housing 1 and is used to connect to the charging interface of an external electronic device. The winding mechanism is located in the second sub-cavity and cooperates with the charging cable to wind up at least a portion of the charging cable. When the user pulls the charging connector, the charging cable extends out of the housing 1 under external force, and the winding mechanism releases the charging cable. When the external force is released, the winding mechanism automatically winds up the charging cable, causing it to retract into the housing 1. Thus, the telescopic cable module 5 enables the telescopic movement of the charging connector, allowing the user to pull out an appropriate length of charging cable according to their needs and automatically retract it after use, preventing the charging cable from becoming tangled on the desktop and keeping the desktop tidy.

[0068] It is understood that the power connector 4 is used to connect to an external AC power source and introduce AC power into the charging module 3. The power connector 4 can be in the form of a plug, which can be directly plugged into a wall socket or power strip; or it can be in the form of an interface, which can be connected to an external power source through a power cord. This application does not limit the specific form of the power connector 4, as long as it can introduce external AC power into the charging module 3.

[0069] In one implementation, see Figure 8 The bracket 2 is provided with a cavity 22, which is connected to the second sub-cavity and constitutes at least part of the second sub-cavity. The cavity 22 is connected to the second air duct 13b, and one side of the cavity 22 is connected to the air outlet 12. The cooling fan 6 is disposed in the cavity 22.

[0070] It is understood that the support 2 is a hollow structure with a cavity 22 inside; the cavity 22 can be a closed or semi-closed space inside the support 2, formed by reserving a cavity in the solid structure of the support 2.

[0071] In this embodiment, the cavity 22 of the support 2 is connected to the second air duct 13b in the first sub-cavity via a connecting port, opening, or channel, allowing air in the second air duct 13b to flow into the cavity 22 of the support 2; one side of the cavity 22 is connected to the air outlet 12. For example, the cavity 22 of the support 2 has an opening or channel on the side near the air outlet 12, so that air entering the cavity 22 can be discharged to the outside of the housing 1 from one side of the cavity 22 through the air outlet 12.

[0072] In this embodiment, the cooling fan 6 is installed inside the cavity 22 of the bracket 2 and is located in the heat dissipation channel of the cavity 22. Since one side of the cavity 22 is connected to the second air duct 13b and the other side is connected to the air outlet 12, when the cooling fan 6 is working, a negative pressure is formed in the cavity 22, which draws the air in the second air duct 13b into the cavity 22 and guides the air to be discharged from the air outlet 12 to guide and drive the airflow in the heat dissipation air duct.

[0073] In one embodiment, the charging module 3 further includes a first circuit board 32 and a second circuit board 33 electrically connected to the main control board 31. The thickness directions of the first circuit board 32 and the second circuit board 33 intersect the thickness direction of the main control board 31, and the first circuit board 32 and the second circuit board 33 are spaced apart. (See also...) Figure 7 and Figure 8 A ventilation hole 21 is provided on the bracket 2 between the first circuit board 32 and the second circuit board 33, and the ventilation hole 21 connects the second air duct 13b and the second sub-cavity.

[0074] It is understood that, along the X direction, the first circuit board 32 and the second circuit board 33 are spaced apart on the main control board 31. Exemplarily, the bracket 2 and the second side 312 of the main control board 31 are spaced apart along the Y direction, and the first circuit board 32, the main control board 31, the second circuit board 33 and the bracket 2 form an annular region, which constitutes at least part of the second air duct 13b. The bracket 2 in the annular region is provided with an air passage 21 to connect the second air duct 13b and the second sub-cavity.

[0075] For example, the bracket 2 is fitted to the second side 312 of the main control board 31; at this time, the second side 312 of the main control board 31 directly abuts against the surface of the bracket 2, and the first circuit board 32 and the second circuit board 33 are respectively disposed on opposite sides of the bracket 2 along the X direction; at this time, the second air duct 13b is formed by the first side wall 1a and the first circuit board 32 or the second side wall 1b and the second circuit board 33, and the bracket 2 is provided with an air passage 21 to connect the second air duct 13b and the second sub-cavity. After the airflow enters from the air inlet 11, it flows through the first air duct 13a on one side of the first side 311 of the main control board 31, enters the second air duct 13b through the gap between the periphery of the main control board 31 and the housing 1 or through the ventilation hole on the main control board 31, then enters the second sub-cavity through the air passage 21 on the bracket 2, and finally exits from the air outlet 12.

[0076] Optionally, a cooling fan 6 is provided in the second sub-cavity. The air inlet of the cooling fan 6 faces the second air duct 13b, and the air outlet of the cooling fan 6 faces the air outlet 12. The cooling fan 6 is used to guide the air in the first air duct 13a and the second air duct 13b to flow to the air outlet 12 through the air passage 21.

[0077] Understandably, the air inlet of the cooling fan 6 faces the direction of the second air duct 13b, allowing the cooling fan 6 to draw in air from the second air duct 13b; the air outlet of the cooling fan 6 faces the direction of the air outlet 12, allowing the cooling fan 6 to guide the air to the air outlet 12 for discharge; the cooling fan 6 is used to guide the air in the first air duct 13a and the second air duct 13b through the air passage 21 to the air outlet 12. For example, when the cooling fan 6 is working, it generates negative pressure, drawing in air from the first air duct 13a and the second air duct 13b. The air passes through the air passage 21 from the first sub-cavity into the second sub-cavity, and flows to the air outlet 12 under the guidance of the cooling fan 6, finally being discharged outside the housing 1.

[0078] It is worth noting that the number of air passages 21 can be one or more. The shape of the air passages 21 can be circular, elliptical, rectangular, elongated, or other regular or irregular shapes, as long as airflow can pass through; this application does not impose any restrictions on this. For example, the diameter or equivalent diameter of the air passages 21 can be 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 12mm, or 15mm; of course, the diameter of the air passages 21 can also be any value between the above adjacent values.

[0079] In one implementation, see Figure 3 and Figure 4 The second air duct 13b is formed by the second side 312, the bracket 2 and the inner wall of the housing 1.

[0080] It is understood that an annular region is formed between the first circuit board 32, the main control board 31, the second circuit board 33, and the bracket 2. This annular region constitutes at least a portion of the second air duct 13b. The bracket 2 within this annular region is provided with air passage holes 21 to connect the second air duct 13b and the second sub-cavity. Optionally, at least a portion of the circuit modules are located within the annular region formed between the first circuit board 32, the main control board 31, the second circuit board 33, and the bracket 2. For example, most of the heat-generating electronic components inside the charging device are located in the annular area to save internal space and allow airflow to flow directly into the annular area through the ventilation holes on the main control board 31. Since the main control board 31 and the air inlet are directly opposite each other, the air flowing into the first air duct 13a is blown at least partially around the main control board 31 by the action of the main control board 31 surface, and enters the second air duct 13b through the air passage gap 31a between the main control board 31 and the housing 1, thereby surrounding the electronic components in the annular area. Since the air passage hole 21 is only set on the bracket 2 in the annular area, all the air flowing into the housing 1 must enter the annular area and enter the inner cavity through the air passage hole 21 to be dispersed through the air outlet 12.

[0081] In one implementation, see 7 and Figure 8 The cooling fan 6 is located inside the cavity 22 and at the air passage 21. A sealing ring is provided between the cooling fan 6 and the bracket 2, and the sealing ring surrounds the air passage 21.

[0082] In one embodiment, the distance between the cooling fan 6 and the air outlet 12 is less than the distance between the cooling fan 6 and the air inlet 11.

[0083] It should be noted that the distance between the cooling fan 6 and the air outlet 12 refers to the length of the airflow path or straight-line distance between the air outlet end of the cooling fan 6 and the air outlet 12; the distance between the cooling fan 6 and the air inlet 11 refers to the length of the airflow path or straight-line distance between the air inlet end of the cooling fan 6 and the air inlet 11. The fan is located at the end of the air duct, and the airflow is under negative pressure throughout the entire cooling air duct, avoiding the problem of airflow leakage from gaps or holes in the housing 1 when blowing with positive pressure, ensuring that the airflow can flow orderly along the preset path. At the same time, the fan's proximity to the air outlet 12 allows the hot air heated by the fan to be quickly exhausted outside the housing 1, reducing the residence time of hot air inside the housing 1 and preventing hot air from flowing back or accumulating inside the housing 1, thereby improving heat dissipation efficiency.

[0084] In one embodiment, the air inlet 11 is perpendicular to the air outlet 12. It is understood that by setting the air inlet and outlet directions to be perpendicular, the heat dissipation duct forms a tortuous extension path within the housing 1, increasing the flow path length of the airflow within the housing 1. This prolongs the heat exchange time between the cooling airflow and the main control board 31 and circuit modules, allowing the airflow to fully absorb heat before being discharged, thus improving heat dissipation efficiency.

[0085] In one embodiment, the circuit module includes a transformer 32a disposed within the second air duct 13b; the air inlet 11 and the first side surface 311 are disposed opposite to each other, and the air inlet 11, transformer 32a, and cooling fan 6 are arranged sequentially along the thickness direction of the main control board 31. It should be noted that the transformer 32a is one of the main heat-generating components in the charging device, generating a large amount of heat during operation. In this embodiment, the transformer 32a is disposed within the second air duct 13b, allowing airflow to directly pass over the surface of the transformer 32a and carry away the heat it generates.

[0086] Optionally, the transformer 32a is further provided with heat sinks, at least a portion of which are located within the second air duct 13b. It should be noted that the fact that at least a portion of the heat sinks are located within the second air duct 13b allows the cooling airflow within the second air duct 13b to directly flow over the surface of the heat sinks, carrying away the heat transferred from the transformer 32a to the heat sinks, further improving the heat dissipation effect on the transformer 32a.

[0087] In one embodiment, the inner wall of the housing 1 has a first mounting portion corresponding to the air inlet 11, and the first mounting portion is provided with a first protective net 11a.

[0088] Optionally, the inner wall of the housing 1 has a second mounting part at the position corresponding to the air outlet 12, and the second mounting part is provided with a second protective net 12a.

[0089] In one implementation, see 1 and Figure 2 The housing 1 is provided with a fan button 14, which is electrically connected to the cooling fan 6 and is used for the user to manually control the start or stop of the cooling fan 6.

[0090] It is understood that the fan button 14 is located on the outer surface of the housing 1 for easy user operation; the fan button 14 is electrically connected to the cooling fan 6 and is used for the user to manually control the start or stop of the cooling fan 6. Optionally, the fan button 14 can be in the form of a push button, a toggle switch, a touch button, or a slider switch, etc., and this application does not limit it in this way.

[0091] Understandably, the cooling fan 6 is typically started and stopped automatically by the controller inside the charging device based on the detection results of the temperature sensor. For example, when a user is preparing to perform high-power fast charging on multiple devices simultaneously, they can press the fan button 14 in advance to start the cooling fan 6, so that the fan starts working before charging begins, reducing the temperature of the components inside the housing 1 in advance, and preparing for subsequent high-power output; when the user is in a low-power charging scenario and the ambient temperature is low, they can manually turn off the fan to reduce the noise and energy consumption generated by the fan.

[0092] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A charging device, characterized by, include: The housing has a receiving cavity and an air inlet and an air outlet communicating with the receiving cavity; the air inlet and the air outlet are located on different side walls of the housing; The charging module includes a main control board and a circuit module disposed on the main control board; The main control board is disposed in the accommodating cavity and has a first side and a second side opposite to each other. The first side defines a first air duct between itself and the inner wall of the housing, and the second side defines a second air duct between itself and the inner wall of the housing. The air inlet, the first air duct, the second air duct, and the air outlet are connected in sequence to form a heat dissipation air duct; A cooling fan, located within the cooling duct, is used to guide airflow along the cooling duct. The projection of the air inlet onto the main control board is in the thickness direction.

2. The charging device of claim 1, wherein, The charging module further includes a first circuit board electrically connected to the main control board. The thickness direction of the first circuit board intersects with the thickness direction of the main control board. The housing has a first sidewall and a second sidewall opposite to each other along the thickness direction of the first circuit board. The first circuit board is spaced apart from the first sidewall and the second sidewall respectively. Electronic components are provided on the first circuit board.

3. The charging device of claim 2, wherein, The charging module further includes a second circuit board electrically connected to the main control board. The first circuit board and the second circuit board are spaced apart along the thickness direction of the first circuit board. The thickness direction of the second circuit board is the same as the thickness direction of the first circuit board and intersects with the thickness direction of the main control board. At least some of the electronic components are disposed between the first circuit board and the second circuit board.

4. The charging device of claim 3, wherein, The main control board is provided with at least one first ventilation hole, which connects the first air duct and the second air duct. And / or, at least one second ventilation hole is provided on the first circuit board; And / or, at least one third ventilation hole is provided on the second circuit board.

5. The charging device of claim 3, wherein, The first circuit board is close to the first sidewall, the second circuit board is close to the second sidewall, and the distance between the first circuit board and the edge of the main control board facing the first sidewall is D1, wherein D1 satisfies: D1≥1mm; And / or, the distance between the second circuit board and the edge of the main control board facing the second sidewall is D2, wherein D2 satisfies: D2≥1mm.

6. The charging device of claim 1, wherein, At least a portion of the periphery of the main control board has a gap with the inner wall of the housing, and the periphery of the main control board and the inner wall of the housing form an air passage gap, through which the first air duct connects to the second air duct.

7. The charging device according to any one of claims 1 to 6, wherein The accommodating cavity is provided with a bracket, which divides the accommodating cavity into a first sub-cavity and a second sub-cavity. The main control board is located in the first sub-cavity. The second sub-cavity is provided with a telescopic cable module, which is electrically connected to the charging module. The charging connector on the telescopic cable module extends out of the housing and is telescopically movable relative to the housing. The housing is provided with a power connector that is electrically connected to the charging module.

8. The charging device of claim 7, wherein, The bracket has a cavity, which is connected to the second sub-cavity and constitutes at least part of the second sub-cavity. The cavity is connected to the second air duct, and one side of the cavity is connected to the air outlet. The cooling fan is located inside the cavity.

9. The charging device of claim 7, wherein, The charging module further includes a first circuit board and a second circuit board electrically connected to the main control board. The thickness directions of the first circuit board and the second circuit board intersect with the thickness direction of the main control board, and the first circuit board and the second circuit board are spaced apart. A ventilation hole is provided through the bracket between the first circuit board and the second circuit board, and the ventilation hole connects the second air duct and the second sub-cavity. And / or, a cooling fan is provided in the second sub-cavity, the air inlet of the cooling fan faces the second air duct, the air outlet of the cooling fan faces the air outlet, and the cooling fan is used to guide the air in the first air duct and the second air duct to flow to the air outlet through the air passage.

10. The charging device of claim 7, wherein, The second air duct is formed by the second side, the bracket, and the inner wall of the housing.

11. The charging device of claim 9, wherein, The cooling fan is located inside the cavity and at the air passage. A sealing ring is provided between the cooling fan and the bracket, and the sealing ring surrounds the air passage.

12. The charging device of any one of claims 1 to 6, wherein, The distance between the cooling fan and the air outlet is less than the distance between the cooling fan and the air inlet.

13. The charging device of any one of claims 1 to 6, wherein, The air inlet's air intake direction is perpendicular to the air outlet's air outlet direction.

14. The charging device of claim 1, wherein, The circuit module includes a transformer disposed in the second air duct; the air inlet and the first side are disposed opposite to each other, and the air inlet, the transformer, and the cooling fan are arranged sequentially along the thickness direction of the main control board; And / or, the transformer is further provided with heat sinks, at least a portion of which are located within the second air duct.

15. The charging device of claim 1, wherein, The inner wall of the housing has a first mounting part corresponding to the air inlet, and the first mounting part is provided with a first protective net. And / or, the inner wall of the housing has a second mounting portion corresponding to the position of the air outlet, and the second mounting portion is provided with a second protective net.

16. The charging device of claim 1, wherein, The housing is equipped with a fan button, which is electrically connected to the cooling fan and is used by the user to manually control the start or stop of the cooling fan.

Images