A direct current charger cabinet and a direct current charger

Abstract

The utility model discloses a direct current charger cabinet and direct current charger, wherein the direct current charger cabinet includes the cabinet body of rectangular body, and the inside top of cabinet body is equipped with EC backward inclined centrifugal fan, the bottom one side wall of cabinet body is provided with cold air inlet louver, and two sides adjacent with cold air inlet louver are provided with hot air exhaust louver respectively, and two hot air exhaust louvers are located at the two sides of EC backward inclined centrifugal fan respectively, the air duct is still provided in the cabinet body, and the air duct includes air guide groove and baffle, the entrance of air guide groove is butt joint with cold air inlet louver, the export of air guide groove extends upwards and is butt joint with the cavity surrounded by baffle, and the air outlet direction of EC backward inclined centrifugal fan covers the cavity downwards. The utility model provides the technical scheme, and the heat dissipation efficiency is higher, and the overall noise is smaller, and it is favorable to the safe operation of guaranteeing electronic device in the cabinet.

Description

Technical Field

[0001] This utility model relates to the field of DC charger technology for electric vehicles, and in particular to a DC charger cabinet and a DC charger. Background Technology

[0002] As electric vehicles become increasingly popular, the pace of upgrading charging equipment is accelerating, with existing DC chargers trending towards miniaturization. However, the heat dissipation problem of existing DC chargers remains unresolved. Current products suffer from poor heat dissipation, high noise levels, and a high fan failure rate. Inefficient heat dissipation leads to insufficient cooling of internal components, affecting product lifespan and posing safety hazards. Utility Model Content

[0003] To overcome the shortcomings of the existing technology, this utility model provides a DC charging cabinet and a DC charger.

[0004] A DC charging cabinet includes a rectangular cabinet with an EC backward-tilted centrifugal fan installed at the top inside the cabinet; a cold air inlet louver is provided on one side wall at the bottom of the cabinet; a hot air exhaust louver is provided on each side adjacent to the cold air inlet louver, and the two hot air exhaust louvers are respectively located on both sides of the EC backward-tilted centrifugal fan.

[0005] The cabinet is also equipped with an air duct, which includes an air guide slot and a baffle plate. The inlet of the air guide slot is connected to the louver of the cold air inlet, and the outlet of the air guide slot extends upward and connects to the cavity formed by the baffle plate. The outlet of the EC backward-tilting centrifugal fan is downward and covers the cavity.

[0006] Optionally, the air guide trough and the baffle plate together form three layers of air guide space in the cabinet; the airflow paths between the three layers of air guide space are distributed in a Z-shape.

[0007] Optionally, an electronic component mounting position is provided in the middle layer of the three-layer air-guiding space.

[0008] Optionally, the electronic component mounting positions include at least two, and are spaced apart by a preset interval.

[0009] Optionally, a cabinet door is provided on the side of the cabinet opposite to the louvers of the cold air inlet.

[0010] A DC charger includes a DC charger cabinet as described above, and electronic components installed inside the DC charger cabinet.

[0011] Optionally, the electronic component includes at least two PCB boards, which are vertically mounted on the electronic component mounting positions.

[0012] This utility model relates to a DC charging cabinet and DC charger. An EC backward-tilted centrifugal fan is positioned at the top inner part of the cabinet, facilitating the generation of a large downward air pressure. Simultaneously, a novel air duct design allows cool air to enter the cabinet from the bottom, then flow through a tortuous path formed by air guides and baffles before being exhausted from the exhaust vents on both sides of the fan. Compared to existing technologies, this results in higher heat dissipation efficiency and lower overall noise, thus ensuring the safe operation of electronic components within the cabinet. Attached Figure Description

[0013] Figure 1 This is a perspective view of the DC charging cabinet in an embodiment of this utility model;

[0014] Figure 2 This is a front view of the DC charging cabinet in an embodiment of this utility model;

[0015] Figure 3 This is a rear view of the DC charging cabinet in an embodiment of the present utility model;

[0016] Figure 4 This is a left view of the DC charging cabinet in an embodiment of this utility model;

[0017] Figure 5 This is a right view of the DC charging cabinet in an embodiment of this utility model;

[0018] Figure 6 This is a cross-sectional view of the DC charging cabinet in an embodiment of this utility model;

[0019] Figure 7 This is a cross-sectional schematic diagram of the air intake and exhaust of the DC charging cabinet in an embodiment of this utility model;

[0020] The markings in the accompanying drawings are as follows:

[0021] 100. Cabinet; 2. EC backward-tilting centrifugal fan; 3. Cold air inlet louvers; 4. Hot air exhaust louvers; 5. Air guide duct; 6. Baffle plate; 7. Three-layer air guide space; 71. Middle layer; 8. Electronic component mounting position; 9. Cabinet door; 200. PCB board. Detailed Implementation

[0022] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] Provide a DC charging cabinet, such as Figures 1 to 7As shown, the device includes a rectangular cabinet 100, with an EC backward-tilting centrifugal fan 2 installed at the top of the cabinet's interior. A cold air inlet louver 3 is located on one side wall of the bottom of the cabinet. Two hot air exhaust louvers 4 are located on either side of the EC backward-tilting centrifugal fan. The cabinet also contains an air duct, which includes an air guide slot 5 and a baffle plate 6. The inlet of the air guide slot connects to the cold air inlet louver, and the outlet of the air guide slot extends upward and connects to the cavity formed by the baffle plate. The EC backward-tilting centrifugal fan's exhaust direction faces downward, covering the cavity.

[0024] Among them, the EC backward-tilted centrifugal fan has greater air pressure than the traditional axial flow fan, and its air outlet direction is downward covering the cavity, which can ensure that the main components and other components in the cabinet can be covered within the air duct range.

[0025] The cold air inlet louvers are located at the bottom of the cabinet, while the two hot air exhaust louvers are located on either side of the EC tilting centrifugal fan. The space between them is enclosed by air guide ducts and baffles, forming an upward airflow channel. The air guide ducts are located near the cold air inlet louvers, in the first stage of air intake, and are used to guide air upwards. The shape and number of baffles can be flexibly set to form a relatively sealed cavity, which not only facilitates the continued upward extraction of air by the centrifugal fan after passing through the air guide duct, but also prevents hot air from diffusing to other parts of the cabinet.

[0026] Furthermore, the air guide ducts and baffles together form three layers of air guide spaces 7 within the cabinet; the airflow paths between the three layers of air guide spaces are distributed in a Z-shape. That is, after entering the cabinet, the cool air flows upward along a tortuous airflow path, which not only helps to increase airflow but also further reduces wind noise. Preferably, an electronic component mounting position 8 is provided in the middle layer 71 of the three layers of air guide spaces; that is, the middle layer is located in a more favorable heat dissipation position, and mounting the main electronic components here facilitates better heat dissipation. At the same time, when there are at least two electronic component mounting positions and they are spaced a certain distance apart, the space between them is more conducive to airflow.

[0027] Furthermore, a cabinet door 9 is provided on the side of the cabinet opposite the louvers of the cold air inlet, which facilitates the opening, closing, installation and maintenance of electronic components inside the cabinet.

[0028] A DC charger is provided, including the DC charger cabinet 100 as described above, and electronic components installed inside the DC charger cabinet. Other components of the DC charger are prior art and will not be described in detail here.

[0029] Furthermore, the electronic components include at least two PCB boards 200, which are vertically mounted on the electronic component mounting positions. That is, the space between the PCB boards is more conducive to airflow and heat dissipation.

[0030] A schematic diagram of airflow when the centrifugal fan is working is shown below. Figure 6 As shown, cold air enters the cabinet through the cold air inlet louvers and flows upward along the air guide duct under the influence of the extraction pressure. After passing through the middle layer where electronic components are installed, the cold air begins to heat up. The hot air continues to rise through the cavity formed by the baffle plate and is led to the hot air exhaust louvers on both sides of the fan for discharge.

[0031] The above is a description of the present utility model to help understand it; however, the implementation of the present utility model is not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A DC charging cabinet, characterized in that, The device includes a rectangular cabinet with an EC backward-tilted centrifugal fan installed at the top inside the cabinet; a cold air inlet louver is provided on one side wall at the bottom of the cabinet; a hot air exhaust louver is provided on each side adjacent to the cold air inlet louver, and the two hot air exhaust louvers are located on both sides of the EC backward-tilted centrifugal fan. The cabinet is also equipped with an air duct, which includes an air guide slot and a baffle plate. The inlet of the air guide slot is connected to the louver of the cold air inlet, and the outlet of the air guide slot extends upward and connects to the cavity formed by the baffle plate. The outlet of the EC backward-tilting centrifugal fan is downward and covers the cavity.

2. The DC charging cabinet as described in claim 1, characterized in that, The air guide trough and the baffle plate together form three layers of air guide space in the cabinet; the airflow paths between the three layers of air guide space are distributed in a Z-shape.

3. The DC charging cabinet as described in claim 2, characterized in that, An electronic component mounting position is provided in the middle layer of the three-layer air-guiding space.

4. The DC charging cabinet as described in claim 3, characterized in that, The electronic component mounting positions include at least two, and are spaced apart by a preset interval.

5. The DC charging cabinet as described in claim 4, characterized in that, The cabinet has a door on the side opposite to the louvered cold air inlet.

6. A DC charger, characterized in that, It includes the DC charging cabinet as described in claim 5, and electronic components installed inside the DC charging cabinet.

7. The DC charger as described in claim 6, characterized in that, The electronic component includes at least two PCBs, which are vertically mounted on the mounting positions of the electronic component.

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