Module waterproof structure, electrical equipment and charging device

Abstract

The application provides a module waterproof structure, an electrical equipment and a charging device, and relates to the technical field of charging. The module waterproof structure is arranged at a preset air outlet in a shell of the charging device, and comprises a grid plate and a plurality of parallel gratings. The plurality of parallel gratings are arranged in parallel on the grid plate at a preset angle. The bottom of the grid plate is provided with a drainage structure. Thus, the application improves the heat dissipation efficiency and the waterproof high protection level, and achieves the balance between the open heat dissipation and the high protection level.

Description

Technical Field

[0001] This application relates to the field of charging technology, and in particular to a modular waterproof structure, electrical equipment, and charging device. Background Technology

[0002] With the rapid development of the electric vehicle market, the demand for low-power DC charging piles has surged due to their small size and flexible deployment. To meet the requirements of aesthetics and lightweight design, the industry is gradually upgrading traditional sheet metal housings to plastic housings. However, plastic housings face multiple technical challenges in protective structure design due to limitations in molding processes.

[0003] Existing plastic-cased DC charging piles mostly use simple sealed cavities composed of insect-proof nets and L-shaped waterproof partitions to cope with light rain, resulting in limited protection capabilities. In extreme downpours, rainwater can easily splash through the insect-proof nets to the module's air outlet or impact the waterproof partitions to generate water mist, causing short circuits and damage to the charging module. In other words, existing plastic casings struggle to achieve a balance between open-type heat dissipation and a high level of protection. Utility Model Content

[0004] The purpose of this application is to provide a modular waterproof structure, electrical equipment, and charging device to alleviate (reduce, lower, etc.) the technical problem of balancing open heat dissipation and high protection level in the prior art.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0006] In a first aspect, embodiments of this application provide a modular waterproof structure, comprising: the modular waterproof structure being disposed at a preset air outlet within the housing of a charging device; the modular waterproof structure comprising: a mesh plate and multiple parallel grilles, the multiple parallel grilles being fixedly disposed parallel to each other on the mesh plate at a preset angle; and a drainage structure being disposed at the bottom of the mesh plate.

[0007] Optionally, the grid plate is a grid structure composed of vertical stiffeners and horizontal grilles.

[0008] Optionally, two adjacent parallel grids have a predetermined overlap area in the predetermined height direction of the grid plate.

[0009] Optionally, the top and bottom of the mesh plate are respectively provided with a first plug-in structure and a second plug-in structure to be fixed at the corresponding positions of the preset air outlet inside the housing.

[0010] Optionally, the second plug-in structure is a protrusion above a preset reference position at the bottom of the grid plate, and the drainage structure includes at least one groove below the preset reference position.

[0011] Secondly, embodiments of this application provide an electrical device, including at least: a housing, an electrical structure disposed within the housing, and a modular waterproof structure with a preset air outlet disposed on the housing. The modular waterproof structure is any of the modular waterproof structures described in the first aspect above. A waterproof partition is disposed within the housing corresponding to the preset air outlet and near the electrical structure. When the housing is in a snap-fit ​​state, it surrounds the modular waterproof structure and the waterproof partition to form a sealed cavity.

[0012] Thirdly, this application provides a charging device, including: a housing, a charging module disposed within the housing, and a module waterproof structure with a preset air outlet disposed on the housing. The module waterproof structure is any of the module waterproof structures described in the first aspect above. The housing is provided with a waterproof partition corresponding to the preset air outlet and near the charging module. When the housing is in a snap-fit ​​state, it surrounds the module waterproof structure and the waterproof partition to form a sealed cavity.

[0013] Optionally, the housing includes: a first housing and a second housing that is fastened to the first housing, wherein the charging module is fixedly disposed on the second housing, and the preset air outlet is provided on the first side of the second housing;

[0014] The waterproof partition is disposed on the second housing corresponding to the preset air outlet and near the preset position of the charging module.

[0015] Optionally, a maintenance port is also provided on the second side of the second housing near the power port of the charging module, and a dustproof cotton is provided on the side of the maintenance port near the charging module.

[0016] Optionally, the charging module is a DC charging module or an AC charging module.

[0017] This application provides a modular waterproof structure, electrical equipment, and charging device. The modular waterproof structure includes a grid plate and multiple parallel grilles. The multiple parallel grilles are fixedly mounted on the grid plate at a predetermined angle. The predetermined angle of the multiple parallel grilles guides airflow obliquely through the predetermined air outlet, accelerating the flow of heat dissipation airflow and preventing a decrease in heat dissipation performance due to the waterproof design. This improves heat dissipation efficiency and the high level of waterproof protection, achieving a balance between open heat dissipation and a high level of protection. The bottom of the grid plate is located in a drainage structure to receive the water flow guided by the multiple parallel grilles. Rainwater is quickly discharged outside the shell by gravity, preventing water accumulation. Thus, this application improves the waterproof capability of the predetermined air outlet of the electrical equipment through a three-level protection system of grid plate filtration, multi-layer horizontal grille pressure reduction and guidance, and drainage structure discharge. In addition, the modular waterproof structure design prevents rainwater from directly impacting the electrical structure in the electrical equipment, reducing the risk of short circuits. At the same time, the redundant design of the multi-layer horizontal grilles can cope with long-term rain conditions, reducing protection failure due to component aging. In addition, the modular design of the mesh panel and multi-layer parallel grille can directly replace the traditional insect net without modifying the housing mold of the electrical equipment, thus reducing the cost of modification. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 A schematic diagram of a modular waterproof structure provided in this application embodiment. Figure 1 ;

[0020] Figure 2 A schematic diagram of a modular waterproof structure provided in this application embodiment. Figure 2 ;

[0021] Figure 3 A schematic diagram of a modular waterproof structure provided in this application embodiment. Figure 3 ;

[0022] Figure 4 A schematic diagram of a modular waterproof structure provided in this application embodiment. Figure 4 ;

[0023] Figure 5 This is a schematic diagram of the structure of an electrical device provided in an embodiment of this application;

[0024] Figure 6 A schematic diagram of the structure of a charging device provided in this application embodiment. Figure 1 ;

[0025] Figure 7 A schematic diagram of the structure of a charging device provided in this application embodiment. Figure 2 ;

[0026] Figure 8 A schematic diagram of the structure of a charging device provided in this application embodiment. Figure 3 ;

[0027] Figure 9 This is a schematic diagram of rainwater splashing into a charging device provided in an embodiment of this application. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. Furthermore, the terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0032] To better understand the solutions provided in the embodiments of this application, the following detailed description of a modular waterproof structure, electrical equipment, and charging device provided in the embodiments of this application will be provided in conjunction with the accompanying drawings.

[0033] The waterproof structure 100 of this module is installed at a pre-set air outlet inside the housing of the charging device.

[0034] Figure 1 A schematic diagram of a modular waterproof structure provided in this application embodiment. Figure 1 .like Figure 1 As shown, the waterproof structure 100 of the module may include: a mesh plate 110 and a multi-layer parallel grid 120.

[0035] The grid plate 110 is located on the outside of the modular waterproof structure 100, near the preset air outlet, for insect prevention; the multi-layer parallel grille 120 is located on the inside of the modular waterproof structure 100, on the back of the grid plate 110.

[0036] Optionally, Figure 2 A schematic diagram of a modular waterproof structure provided in this application embodiment. Figure 2 .like Figure 2 As shown, the multi-layer parallel grid 120 is fixedly arranged parallel to each other on the grid plate 110 at a preset angle. This preset angle can be adjusted according to actual conditions. The preset angle can be selected as 45°.

[0037] In one possible embodiment, since the grid angle of the multi-layer parallel grid 120 is a preset angle (e.g., 45°) with the horizontal direction, forming a stepped flow guiding structure, the module waterproof structure 100 is used to generate oblique reflection rather than vertical rebound after rainwater impact. At this time, the kinetic energy of the rainwater can be decomposed layer by layer to reduce the impact force of the rainwater and thus avoid the problem of rainwater splashing everywhere.

[0038] Optionally, Figure 3 A schematic diagram of a modular waterproof structure provided in this application embodiment. Figure 3 .like Figure 3 As shown, a drainage structure 130 is provided at the bottom of the grid plate 110 so that rainwater can be quickly discharged through the drainage structure 130 after entering the module waterproof structure 100, thus avoiding water accumulation and corrosion.

[0039] The modular waterproof structure provided in this application is installed at a pre-set air outlet inside the casing of the charging device. This modular waterproof structure can be composed of a mesh plate and multiple layers of parallel grilles. The multiple layers of parallel grilles are fixedly installed parallel to each other on the mesh plate at a pre-set angle. The pre-set angle of the multiple layers of parallel grilles guides airflow obliquely through the pre-set air outlet, accelerating the flow of heat dissipation airflow, preventing a decrease in heat dissipation performance due to the waterproof design, improving heat dissipation efficiency and achieving a high level of waterproof protection, thus achieving a balance between open heat dissipation and a high level of protection. The bottom of the mesh plate is set in a drainage structure to receive the water flow guided by the multiple layers of parallel grilles, and the rainwater is quickly discharged outside the casing by gravity, preventing water accumulation. Therefore, this application improves the waterproof capability of the pre-set air outlet of electrical equipment through a three-level protection system of mesh plate filtration, multi-layer horizontal grille pressure reduction and guidance, and drainage structure discharge. In addition, the modular waterproof structure design can prevent rainwater from directly impacting the electrical structure in the electrical equipment, reducing the risk of short circuits; at the same time, the redundant design of the multi-layer horizontal grilles can cope with long-term rain conditions, reducing protection failure due to component aging. In addition, the modular design of the mesh panel and multi-layer parallel grille can directly replace the traditional insect net without modifying the housing mold of the electrical equipment, thus reducing the cost of modification.

[0040] Optionally, Figure 4 A schematic diagram of a modular waterproof structure provided in this application embodiment. Figure 4 .like Figure 4 As shown, the aforementioned mesh plate 110 is a mesh structure composed of vertical stiffeners 111 and horizontal grilles 112. It can not only block insects and debris, but also initially disperse the impact force of rainwater, reducing the load on subsequent grilles and forming multi-level protection. At the same time, since the mesh plate 110 is a mesh structure, the hollow design between the mesh plate 110 and the multi-layer parallel grilles 120 can ensure unobstructed ventilation paths and meet heat dissipation requirements.

[0041] Optionally, continue to refer to the above. Figure 2 The two adjacent parallel grids 120 mentioned above have a preset overlap area in the preset height direction of the grid plate 110. The preset overlap area can be selected according to the actual situation; for example, the preset overlap area can be selected as 2-3mm.

[0042] In one possible embodiment, the parallel grilles 120 employ a multi-layer design, with their angles at 45° to the horizontal, and a 2-3mm overlap between adjacent parallel grilles 120. The modular waterproof structure serves the following purpose: when rainwater impacts the parallel grilles 120, the first layer of parallel grilles 120 blocks and alters its flow direction, causing it to flow downwards at an angle. Each impact consumes its kinetic energy and reduces its speed. The kinetic energy of the rainwater is thus gradually dissipated, and the pressure decreases accordingly. Ultimately, when the rainwater, now under reduced pressure, impacts the waterproof barrier, its impact force is insufficient to break the water droplets into mist; instead, it forms larger droplets that flow down the barrier, thus eliminating the risk of water mist spreading to electrical equipment. The preset angles between the multiple layers of parallel grilles and the overlap between adjacent horizontal grilles can be adjusted according to airflow and spatial arrangement. No limitations are imposed here.

[0043] It should be noted that the preset angle can be selected within the range of 30° to 60°. 30° to 45° is suitable for scenarios with high heat dissipation requirements. In this range, the horizontal force component increases (horizontal force is greater than vertical force), resulting in less airflow resistance. However, the number of parallel grille layers 120 needs to be increased (e.g., from 3 to 4 layers) to compensate for the waterproofing capability. 45° to 60° is suitable for rainy areas or scenarios requiring high protection levels. In this range, the vertical force component increases (vertical force is greater than horizontal force), resulting in faster rainwater sliding off the grille. However, it should be noted that wind resistance may cause the temperature of electrical equipment to rise; in this case, the number of parallel grille layers 120 should be reduced. In short, the smaller the preset angle, the larger the required preset overlap area between adjacent parallel grilles 120, resulting in better waterproofing but affecting heat dissipation; the larger the angle, the opposite is true. Therefore, 45° is the optimal preset angle. Furthermore, it should be noted that the above preset angles are merely examples and should not be construed as limitations on this application.

[0044] The modular waterproof structure provided in this application has a preset overlap area between two adjacent parallel grids in the preset height direction of the grid plate. The grid angle is 45° with the horizontal direction to ensure that under extreme weather conditions, raindrops with greater pressure first hit the multi-layer horizontal grid, and after the pressure is released, they flow obliquely downwards to the waterproof partition. In this way, the height and pressure of the rainwater that hits the waterproof partition again are greatly reduced compared to the original direct hit, solving the problem of water droplets splashing when the original structure hits the waterproof partition directly.

[0045] Optionally, continue to refer to the above. Figure 4The top and bottom of the aforementioned mesh plate 110 are respectively provided with a first insertion structure 113 and a second insertion structure 114 to fix it to the corresponding position of the preset air outlet inside the housing. This ensures the accurate relative position of the multi-layer horizontal grille and the preset air outlet, maintains the effectiveness of the airflow guiding angle, and avoids the risk of the mesh plate loosening due to rainwater impact. Therefore, this application can snap the mesh plate 110 into place at the corresponding position of the preset air outlet inside the housing, directly replacing the traditional insect screen without modifying the housing mold of the electrical equipment, thus reducing modification costs.

[0046] Optionally, continue to refer to the above. Figure 3 and Figure 4 The second insertion structure 114 is a protrusion that is higher than the bottom preset reference position of the grid plate. The preset reference position can be selected according to the actual situation.

[0047] In one possible embodiment, the protrusion is higher than the preset reference position at the bottom of the mesh plate 110, forming a convex-concave fit with the groove of the preset air outlet of the housing, so that the mesh plate 110 remains horizontal during installation, avoiding the preset angle (e.g., 45°) of the multi-layer horizontal grille 120 from shifting due to tilting. At the same time, the protrusion bears the vertical load (e.g., rainwater impact pressure) at the bottom of the mesh plate 110, and its height is higher than the preset reference surface, forming a rigid support point to prevent the mesh plate 110 from deforming due to long-term water pressure.

[0048] The drainage structure 130 may include at least one recess 115 located below a preset reference position (e.g., Figure 4 Gravity can be used to create the lowest point for water accumulation. After being guided by multiple layers of horizontal grilles 120, rainwater automatically flows into the groove 115 and then along the groove 115 to the drain outlet (e.g., Figure 3 This ensures that no rainwater remains.

[0049] Furthermore, the grooves 115 and the protrusions are staggered to avoid the protrusions blocking the water flow path. For example, the protrusions are located at the center of the bottom of the grid plate 110, and the grooves 115 are located on both sides of the bottom of the grid plate 110, forming a layout with drainage on both sides and fixation in the center.

[0050] The modular waterproof structure provided in this application features a second insertion structure that is a protrusion above a preset reference position at the bottom of the grid plate. This protrusion engages with a groove in the housing to prevent lateral rainwater infiltration. The drainage structure can be composed of at least one groove below the preset reference position, which guides rainwater to drain quickly, preventing water accumulation and erosion of the insertion structure. Thus, the protrusion, while positioning the grid plate, forms a three-dimensional waterproof boundary through its height difference (above the reference surface) and the depth difference (below the reference surface) of the groove. Furthermore, both the protrusion and the groove are integrally formed at the bottom of the grid plate, reducing the production cost of the modular waterproof structure.

[0051] Figure 5 This is a schematic diagram of the structure of an electrical device provided in an embodiment of this application. Figure 5 As shown, the electrical equipment 200 includes at least: a housing 210, an electrical structure 220 disposed within the housing, and a modular waterproof structure 100 disposed on the housing with a pre-set air outlet.

[0052] The housing 210 has a waterproof partition 230 located inside, corresponding to the preset air outlet and near the electrical structure 220. When the housing 210 is in the snap-fit ​​state, it forms a sealed cavity with the modular waterproof structure 100 and the waterproof partition 230. Rainwater must pass through a multi-stage path: preset air outlet → modular waterproof structure 100 → sealed cavity → drainage structure. This effectively increases the waterproof distance and significantly reduces the probability of rainwater intrusion. This ensures that after rainwater hits the outermost insect-proof net of the modular waterproof structure 100, the rainwater will not splash around, thus improving the waterproof level of the electrical equipment.

[0053] In one possible embodiment, the multi-layer parallel grille of the modular waterproof structure 100 (e.g., at a preset angle of 45°) is used to first guide and depressurize rainwater, and then, through the secondary obstruction of the waterproof baffle 230, the water flows obliquely downward along the wall of the sealed cavity, and is finally discharged from the drainage structure. The cooperation between the waterproof baffle 230 and the multi-layer parallel grille ensures that the rainwater impact velocity is lower than the critical value for water mist generation (e.g., 5 m / s), reducing the amount of water mist generated and preventing the electrical structure 220 from short-circuiting due to condensation. At the same time, the sealed cavity forms a negative pressure zone at the preset air outlet, which can accelerate the flow of heat dissipation airflow, while the sealed cavity structure does not block the air duct, ensuring that the temperature of the electrical structure 220 is maintained within a safe range.

[0054] The electrical equipment 200 can be selected according to actual conditions, and the corresponding electrical structure 220 can also be selected according to actual conditions. For example, the electrical equipment 200 can be a charging device, and the corresponding electrical structure 220 can be a charging module. The material of the housing 210 can be an insulating material, such as plastic.

[0055] The electrical equipment provided in this application may consist of at least a housing, an electrical structure disposed within the housing, and a modular waterproof structure with a pre-set air outlet on the housing. The pre-set air outlet corresponds to the housing, and a waterproof partition is disposed near the electrical structure. When the housing is in a locked state, it forms a sealed cavity with the modular waterproof structure and the waterproof partition. Therefore, the waterproof structure of the electrical equipment in this application, through the sealed cavity design formed by the housing, the modular waterproof structure, and the waterproof partition, achieves excellent waterproof performance, high heat dissipation efficiency, and convenient maintenance.

[0056] Figure 6 A schematic diagram of the structure of a charging device provided in this application embodiment. Figure 1 .like Figure 6As shown, the charging device 300 may include: a housing 310, a charging module 320 disposed within the housing, and a module waterproof structure 100 disposed on the housing with a preset air outlet.

[0057] The housing 310 has a pre-set air outlet inside and a waterproof partition 330 near the charging module 320. When the housing 310 is in the snap-fit ​​state, it forms a sealed cavity with the module waterproof structure 100 and the waterproof partition 330. Rainwater needs to go through a multi-stage path of pre-set air outlet → module waterproof structure 100 → sealed cavity guide → drainage structure, which is equivalent to increasing the waterproof distance and greatly reducing the probability of rainwater intrusion. This ensures that after the rainwater hits the outermost insect-proof net of the module waterproof structure 100, the rainwater will not splash around, thus improving the waterproof level of the electrical equipment.

[0058] In one possible embodiment, the multi-layer parallel grille of the waterproof module structure 100 (e.g., at a preset angle of 45°) is used to first guide and depressurize rainwater, and then, through the secondary obstruction of the waterproof partition 330, the water flows obliquely downward along the wall of the sealed cavity, and is finally discharged from the drainage structure. The cooperation between the waterproof partition 330 and the multi-layer parallel grille ensures that the rainwater impact velocity is lower than the critical value for water mist generation (e.g., 5 m / s), reducing the amount of water mist generated and preventing the charging module 320 from short-circuiting due to condensation. At the same time, the sealed cavity forms a negative pressure zone at the preset air outlet, which can accelerate the flow of heat dissipation airflow, while the sealed cavity structure does not block the air duct, ensuring that the temperature of the charging module 320 is maintained within a safe range.

[0059] The charging module 320 can be a DC charging module or an AC charging module. The corresponding charging device 300 can be a DC charging device or an AC charging device.

[0060] The charging device provided in this application comprises a housing, a charging module disposed within the housing, and a modular waterproof structure with a pre-set air outlet on the housing. The pre-set air outlet corresponds to the housing, and a waterproof partition is disposed near the charging module. When the housing is in a snap-fit ​​state, it forms a sealed cavity with the modular waterproof structure and the waterproof partition. Therefore, the waterproof structure of the electrical equipment in this application, through the sealed cavity design formed by the housing, the modular waterproof structure, and the waterproof partition, achieves excellent waterproof performance, high heat dissipation efficiency, and convenient maintenance.

[0061] Optionally, continue to refer to the above. Figure 6 The aforementioned housing 310 includes: a first housing 311, and a second housing 312 that is engaged with the first housing 311. The engagement method of the first housing 311 and the second housing 312 can be arbitrarily selected. For example, snap-fit ​​engagement and / or bolt locking.

[0062] The charging module 320 is fixedly mounted on the second housing 312. The first side of the second housing 312 is provided with a preset air outlet, forming a direct heat dissipation channel from the charging module 320 to the preset air outlet, thereby improving heat dissipation efficiency. The waterproof partition 330 is disposed on the second housing 312 corresponding to the preset air outlet and close to the preset position of the charging module 320, forming a buffer zone from the preset air outlet to the waterproof partition 330 to the charging module 320, thus avoiding direct impact of rainwater on the charging module 320.

[0063] The first shell 311 is the upper shell of the shell; the second shell 312 is the lower shell of the shell.

[0064] For example, Figure 7 A schematic diagram of the structure of a charging device provided in this application embodiment. Figure 2 .like Figure 7 As shown, waterproof partition 330 ( Figure 7 The red part (in the image) is an L-shaped waterproof partition; Figure 7 The purplish-red color in the image represents the modular waterproof structure 100. The modular waterproof structure 100 is positioned at a pre-set air outlet on the second housing 312, forming an L-shaped flow guide structure with the waterproof partition 330 to guide rainwater along the wall into the bottom drainage structure. Simultaneously, through the pre-set air inlet and the flow guide plate, the heat from the charging module 320 is dissipated through the pre-set air outlets on both sides, thus achieving a balance between open-type heat dissipation and a high level of protection.

[0065] The charging device provided in this application has a housing consisting of a first housing and a second housing that is interlocked with the first housing. The charging module is fixedly mounted on the second housing, and a preset air outlet is provided on the first side of the second housing. A waterproof partition is provided on the second housing corresponding to the preset air outlet and close to a preset position of the charging module. Thus, the structural design of the housing and waterproof partition in this application achieves a synergistic improvement in assembly efficiency, waterproof performance, and heat dissipation efficiency through triple innovation of interlocking sealing, charging module positioning, and airflow guidance by the waterproof partition. It not only meets the lightweight and aesthetic requirements of low-power DC charging piles, but also solves the protection problem of open air outlets through the precise layout of the waterproof partition.

[0066] Optionally, continue to refer to Figure 6 The second side of the second housing 312 near the power port of the charging module 320 is also provided with a maintenance port 340. The maintenance port 340 corresponds directly to the electrical connection parts (such as cable interfaces and terminal blocks) of the charging module 320 and is used for maintenance of the charging module 320.

[0067] It should be noted that the inspection port 340 is independent of the main structure of the second housing 312. When damaged, the cover of the inspection port 340 can be replaced separately, reducing maintenance costs and avoiding the need for disassembly of the entire machine due to local failure.

[0068] A dustproof cotton 350 is installed on the side of the inspection port 340 near the charging module 320. This is to prevent the power port of the charging module 320 from increasing contact resistance due to dust accumulation.

[0069] For example, Figure 8 A schematic diagram of the structure of a charging device provided in this application embodiment. Figure 3 .like Figure 8 As shown, the dustproof cotton 350 is fixed to the inner frame of the inspection port 340. The inner frame maintains a preset distance from the power port, forming a buffer filter strip from the inspection port 340 to the dustproof cotton 350 to the power port, preventing large particles of debris from directly impacting the terminals of the charging module 320.

[0070] The charging device provided in this application has a maintenance port on the second side of the second housing near the power port of the charging module, and a dustproof cotton is installed on the side of the maintenance port near the charging module. Thus, the structural design of the maintenance port and dustproof cotton in this application achieves a synergistic improvement in operation and maintenance efficiency, dustproof performance, and heat dissipation. This provides a crucial guarantee for the long-term reliable operation of the charging device.

[0071] For example, with Figure 6 Taking the charging device 300 as an example, the working principle of the charging device 300 will be explained. Under normal working conditions, the outside natural wind enters the charging module 320 through the inspection port 340 and the dustproof cotton 350 for heat dissipation. The air coming out of the charging module 320 then passes through the L-shaped sealed cavity formed by the first housing 311, the second housing 312 and the waterproof partition 330 on the second housing 312, and then is discharged from the charging device through the module waterproof structure 100.

[0072] Figure 9 This is a schematic diagram illustrating rainwater splashing into a charging device provided in an embodiment of this application. Figure 9 As shown in (1), the charging device is a schematic diagram of rainwater splashing into the original insect screen. In extreme weather conditions, high-pressure rainwater splashes everywhere after hitting the insect screen, causing raindrops to condense on the upper part of the inner wall of the casing. These raindrops are located directly above the air outlet of the module, so the risk of raindrops falling into the charging module and causing short circuit and damage is extremely high. In addition, some of the high-pressure rainwater directly hits the waterproof partition after passing through the insect screen, resulting in rainwater splashing everywhere. Some of the splashed rainwater will also condense on the upper part of the inner wall of the casing and generate a large amount of water mist. A large amount of water mist will eventually fall into the charging module through the preset air outlet of the charging module, thereby causing risks such as short circuit of the charging module. Figure 9(2) Schematic diagram of rainwater splashing into the charging device after adding the module waterproof structure 100. In extreme stormy weather, heavy rain will enter the module waterproof structure 100 through the preset air outlets on both sides; then enter the L-shaped sealed cavity, the water flow changes, the internal structure design of the module waterproof structure 100 can make the raindrops that hit the outermost grid plate 110 of the module waterproof structure 100 hit the multi-layer parallel grid 120 vertically. After the raindrops release pressure, they will flow naturally downwards through the guide to the bottom of the L-shaped sealed cavity, and then be discharged through the drainage structure 130, thereby solving the risk of rainwater splashing and water mist generation, and also solving the risk of raindrops falling into the charging module and causing short circuit and damage to the module.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A modular waterproof structure, characterized in that, include: The modular waterproof structure is used to be installed at a preset air outlet inside the housing of the charging device. The modular waterproof structure includes: a mesh plate and multiple parallel grilles, the multiple parallel grilles being fixedly installed on the mesh plate at a preset angle. The bottom of the grid plate is provided with a drainage structure.

2. The modular waterproof structure according to claim 1, characterized in that, The grid plate is a grid structure composed of vertical stiffeners and horizontal grilles.

3. The modular waterproof structure according to claim 1, characterized in that, Two adjacent parallel grids have a predetermined overlap area in the predetermined height direction of the grid plate.

4. The modular waterproof structure according to claim 1, characterized in that, The top and bottom of the mesh plate are respectively provided with a first plug-in structure and a second plug-in structure to be fixed to the corresponding positions of the preset air outlet inside the housing.

5. The modular waterproof structure according to claim 4, characterized in that, The second plug-in structure is a protrusion above the preset reference position at the bottom of the grid plate, and the drainage structure includes at least one groove below the preset reference position.

6. An electrical device, characterized in that, At least including: The housing, the electrical structure disposed within the housing, and the modular waterproof structure with a pre-set air outlet disposed on the housing, wherein the modular waterproof structure is the modular waterproof structure described in any one of claims 1 to 5, wherein a waterproof partition is disposed within the housing corresponding to the pre-set air outlet and near the electrical structure, and wherein when the housing is in a snap-fit ​​state, it surrounds the modular waterproof structure and the waterproof partition to form a sealed cavity.

7. A charging device, characterized in that, include: The housing, the charging module disposed within the housing, and the waterproof module structure with a pre-set air outlet disposed on the housing, wherein the waterproof module structure is the waterproof module structure described in any one of claims 1 to 5, wherein a waterproof partition is disposed within the housing corresponding to the pre-set air outlet and near the charging module, and wherein when the housing is in a snap-fit ​​state, it surrounds the waterproof module structure and the waterproof partition to form a sealed cavity.

8. The charging device according to claim 7, characterized in that, The housing includes: a first housing and a second housing that is fastened to the first housing, wherein the charging module is fixedly mounted on the second housing, and the preset air outlet is provided on the first side of the second housing; The waterproof partition is disposed on the second housing corresponding to the preset air outlet and near the preset position of the charging module.

9. The charging device according to claim 8, characterized in that, The second housing also has a maintenance port on the second side near the power port of the charging module, and a dustproof cotton is provided on the side of the maintenance port near the charging module.

10. The charging device according to claim 7, characterized in that, The charging module is either a DC charging module or an AC charging module.

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