Waterproof heat dissipation structure and direct current networking manager applying same

Abstract

The utility model discloses a waterproof heat dissipation structure and direct current networking manager applying it relates to energy storage technical field, it includes: base, at least one lateral wall is set up multiple ventilation hole no.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to a waterproof heat dissipation structure and a DC network manager using the same. Background Technology

[0002] In DC microgrids and DC power supply systems, it is necessary to manage and control energy storage units, loads, and the connection of photovoltaic / wind power generation systems, which is generally achieved through a DC network manager.

[0003] Currently, DC network managers are often highly integrated for ease of management and cost savings. This inevitably leads to the generation of a lot of heat during operation. If the heat cannot be dissipated in time within the integrated structure, it will not only affect the performance of electrical components but also their service life and create too many safety hazards. Therefore, this application proposes a new technical solution. Utility Model Content

[0004] To improve the heat dissipation performance of the DC network manager and enhance equipment safety, this application provides a waterproof heat dissipation structure and a DC network manager using the same.

[0005] In a first aspect, this application provides a waterproof heat dissipation structure, which adopts the following technical solution:

[0006] A waterproof and heat-dissipating structure, comprising:

[0007] The base has a hollow structure and an open top, with multiple ventilation holes on at least one side wall; and

[0008] The main housing is fixed to the base and its interior is used to integrate various devices;

[0009] The main body is provided with a horizontal water tray, which horizontally divides the inner cavity of the main body into an upper cavity and a lower cavity. The upper cavity is provided with at least one heat dissipation box, which has two ventilation holes on its two side walls and is used to install the main heating device. The lower cavity is provided with an electrical layout plate for installing the device on at least one side wall.

[0010] The electrical appliance arrangement plate is vertical, located above the opening on the base, and forms a vertical air duct with the water tray and the equipment in the upper cavity. The lower part of the air duct is connected to the inner cavity of the base, and the upper part is connected to the ventilation hole two on one side wall of the enhanced heat dissipation box. The side wall of the main box is provided with a ventilation hole three facing the heat exchange hole two on the other side wall of the enhanced heat dissipation box.

[0011] Optionally, there are multiple water trays, and they are divided into at least two groups. One group is a PCS water-holding structure, and the other group is a DC-DC water-holding structure. The multiple water trays are arranged vertically. The water trays in the same group are adjacent to each other, and the lower group of water trays horizontally divides the inner cavity of the main box into an upper cavity and a lower cavity.

[0012] The water-holding tray at the bottom has an opening, and the base is open both at the top and bottom. The opening is located above the top and bottom openings of the base.

[0013] The other water-holding tray has a second opening and a flow guiding unit. The flow guiding unit is connected to the second opening upwards and approaches the other water-holding tray located below it downwards.

[0014] Optionally, the flow guiding unit includes a flow guiding pipe and a heat conducting plate. The upper end of the flow guiding pipe is fixed to the corresponding water-holding tray and connected to the second opening, and the lower end is close to another water-holding tray located below.

[0015] The sidewall of the guide tube has multiple side air holes and a baffle plate is fixed thereon. The side air holes are elongated and vertical. One end of the baffle plate is fixed to the inner wall of the guide tube, and the other end is arc-shaped downward and located in front of the inner end of the side air hole.

[0016] One end of the heat-conducting plate is fixed to the outer wall of the guide tube, and the other end is used to contact the heat source in the main box.

[0017] Optionally, the opening on the bottommost water tray is located on the side of the water tray away from the electrical appliance arrangement plate. The opening on the bottommost water tray has a groove around its outer side, and a drain opening connecting the opening is formed near the edge of the groove. An upper guard plate is provided around the opening and is located on the side of the groove near the opening. A lower guide plate is provided around the groove at the bottom of the bottommost water tray.

[0018] Optionally, the upper end of the upper guard plate is bent toward the groove side.

[0019] Optionally, the water tray may have a rust-proof layer on its upper surface or the water tray may be a rust-proof structure.

[0020] Optionally, a middle air duct is provided at one end of the ventilation hole three on the side wall of the main housing facing into the main housing. One end of the middle air duct is fixed to the enhanced heat dissipation box and covers a ventilation hole two on the side wall, while the other end approaches / contacts the inner end of the ventilation hole three.

[0021] Optionally, a water immersion sensor is provided at the lower part of the main housing. The water immersion sensor is positioned higher than the base and is electrically connected to a controller. The controller is electrically connected to an electronic switch for switching the circuit on and off.

[0022] Secondly, this application provides a DC network manager, which adopts the following technical solution:

[0023] A DC network manager that uses the waterproof and heat dissipation structure described in any one of the above as the integrated structure of electrical equipment.

[0024] In summary, this application includes the following beneficial technical effects: After the application of this application, the main heating device is located in the upper cavity, and the generated heat can be guided to be discharged outward through ventilation holes two and three. At the same time, cooler air is replenished from the base through the air duct. The principle of hot air rising and cold air falling is used to form a rapid airflow, which accelerates heat dissipation without energy consumption. Moreover, ventilation hole three, which is closer to the device at the top, is used for external airflow and is less likely to be exposed to water, thus improving the safety of the device. In addition, there is a water tray inside to isolate the devices to a certain extent, preventing rainwater and condensed water from contacting the devices, especially protecting the devices on the electrical layout board. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this application;

[0026] Figure 2 This is a structural diagram showing the backdoor hidden in this application;

[0027] Figure 3 yes Figure 2 A schematic diagram of the structure behind the hidden sidewalls;

[0028] Figure 4 This is a schematic diagram of the flow guiding unit of this application;

[0029] Figure 5 This is a structural schematic diagram of the upper guard plate and lower guide plate of this application.

[0030] Explanation of reference numerals in the attached diagram: 1. Base; 2. Main body; 21. Front door; 22. Rear door; 3. Water tray; 31. Upper guard plate; 32. Lower guide plate; 4. Enhanced heat dissipation box; 5. Electrical layout plate; 6. Flow guiding unit; 61. Flow guiding pipe; 62. Heat conducting plate; 63. Baffle; 7. Middle air guide pipe. Detailed Implementation

[0031] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0032] This application discloses a waterproof heat dissipation structure.

[0033] Reference Figures 1-3The waterproof and heat dissipation structure includes a base 1 and a main body 2. The base 1 is rectangular in top view and hollow inside, with the top and bottom connected. At least one side wall of the base 1 has multiple ventilation holes evenly distributed. In this embodiment, ventilation holes are provided on all four side walls. The symmetrical sides of the base 1 are fixed with screws at the corners to support connecting blocks that are triangular in side view. The support connecting blocks are hollow, which enhances the stability of the base 1 and can be used to fix it to the ground or load-bearing plate with screws.

[0034] The main housing 2 is fixed to the base 1, and its hollow interior is used to integrate various devices, such as: PCS module, DC-DC conversion module, control host, relay, protection circuit, smoke alarm, communication module, etc. Multiple lifting rings and perforated lifting plates can be fixed to the top of the main housing 2 to facilitate the movement of this application using a crane or similar equipment.

[0035] The main body 2 is provided with horizontal water trays 3, and there are multiple water trays 3 arranged vertically; a bracket is provided inside the main body 2, and the lower end of the bracket is fixed to the base 1. The bracket has multiple horizontally extending sections distributed vertically, and the water trays 3 rest on the horizontal sections and are welded or fixed with screws; equipment can be installed above each water tray 3.

[0036] A water-holding tray 3 located at the bottom divides the inner cavity of the main housing 2 into an upper cavity and a lower cavity, and has an opening 1; at least one enhanced heat dissipation box 4 is provided in the upper cavity. The enhanced heat dissipation box 4 is a hollow box structure, and multiple ventilation holes 2 are evenly provided on its two opposite side walls. The enhanced heat dissipation box 4 is used to install the main heat-generating equipment; if the PCS module generates the most heat when the DC networking manager described in this application is running, the PCS module is installed in the enhanced heat dissipation box 4.

[0037] The main body 2 has maintenance openings on its opposite side walls, each hinged with a door structure, one referred to as the front door 21 and the other as the rear door 22. The ventilation holes on both sides of the enhanced heat dissipation box 4 face the front door 21 and the rear door 22 respectively, and a third ventilation hole is provided on the rear door 22, directly opposite the second ventilation hole. In this embodiment, there are two enhanced heat dissipation boxes 4 arranged vertically above each other, located above different water trays 3.

[0038] At least one side wall of the lower cavity is provided with an electrical layout plate 5 for installing equipment. For example, the electrical layout plate 5 is provided on the side of the lower cavity near the front door 21, and the electrical layout plate 5 is fixed to the bracket in the main housing 2. The electrical layout plate 5 is vertical and forms a vertical air duct with the water tray 3 and the equipment in the upper cavity (the side wall facing the front door 21).

[0039] The electrical appliance arrangement plate 5 is located above the upper opening of the base 1, so that the lower part of the air duct is located above the upper opening of the inner cavity of the base 1, and the upper part is connected to the ventilation hole 2 of the enhanced heat dissipation box 4 facing the front door 21.

[0040] According to the above settings, after the application of this application, the main heating device is located in the upper cavity. The heat generated can be guided to be discharged from the side through ventilation holes 2 and 3. At the same time, cooler air is replenished from the base 1 below through the air duct. The principle of hot air rising and cold air falling is used to form a rapid airflow, which accelerates heat dissipation without energy consumption.

[0041] Furthermore, the ventilation holes at the top, which are closer to the equipment, are used for external ventilation and are less prone to water ingress, thus improving equipment safety.

[0042] Furthermore, the internal water tray 3 provides a certain degree of isolation between equipment to prevent accidental rainwater and condensation from contacting the equipment, especially protecting the equipment on the electrical layout board 5.

[0043] Understandably, electrical layout board 5 is indispensable, as relays, circuit breakers, and other equipment are currently commonly installed vertically.

[0044] In one embodiment of this application, the water tray 3 is divided into at least two groups. Taking two groups as an example: the bottom group has one water tray 3 and is used to install a DC-DC conversion module above it, also known as a DC-DC water-holding structure; the top group is another water tray 3, two in total, and the top of each is used to install an enhanced heat dissipation box 4, also known as a PCS water-holding structure.

[0045] It can be understood that other equipment can be installed above both the PCS water-filling structure and the DC-DC water-filling structure to improve the integration of the equipment.

[0046] Reference Figure 4 The base 1 has a vertically continuous structure, and the opening 1 on the lowest water tray 3 is located above the vertical opening of the base 1. The other water trays 3 have openings 2 and are equipped with flow guiding units 6. The flow guiding units 6 are connected to the openings 2 at the top and are close to the other water tray 3 located below at the bottom.

[0047] In this embodiment, the flow guiding unit 6 includes a flow guiding pipe 61 and a heat guiding plate 62.

[0048] The upper end of the guide pipe 61 is fixed to the corresponding water tray 3 and aligned with and inserted into the opening 2, while the lower end is close to another water tray 3 located below. Multiple side air holes are evenly arranged around the side wall of the guide pipe 61 and baffles 63 are fixed thereon. The side air holes are elongated and vertical. One end of the baffle 63 is fixed to the inner wall of the guide pipe 61, and the other end is arc-shaped downward and located in front of the inner end of the side air hole. That is, air can enter through the side air hole, but if there is water in the guide pipe 61, it can be blocked by the baffle 63 and will not flow along the inner wall but will flow directly downward to the side air hole for discharge.

[0049] The heat-conducting plate 62 can be a metal sheet of the same material as the heat sink. One end of it is fixed to the outer wall of the heat-conducting pipe 61, and the other end is used to contact the heat source in the main housing, such as contacting the enhanced heat dissipation box 4 located above, or even penetrating into the interior to contact the heat-generating part of the device.

[0050] Based on the above settings:

[0051] First, the guide pipe 61 can be used to guide the flow and prevent water from flowing freely along the lower surface of the water tray 3 when there is water on it, which could cause other equipment to come into contact with water and be damaged.

[0052] Secondly, by using the heat-conducting plate 62 to transfer heat to heat the guide pipe 61, it can form an upward airflow by drawing air from the side and bottom inside. On the one hand, this accelerates the drying rate of the guide pipe 61; on the other hand, when there is only a little water in the water tray 3, some of the water can be carried away by the hot air as it passes through the guide pipe 61, so that less water flows to the next water tray 3. This is to keep each water tray 3 in a state of little or no water as much as possible, and to prevent the problem of too much water in one water tray 3 or even interfering with the equipment above.

[0053] Reference Figure 5 In another embodiment of this application, the opening 1 on the bottommost water tray 3 is located on the side away from the electrical appliance arrangement plate 5. This arrangement is to reduce the probability of rainwater or other substances coming into contact with the electrical appliances on the electrical appliance arrangement plate 5.

[0054] However, given that the plate structure has holes and water is present on the plate, the water will flow freely along the lower surface of the plate structure. Therefore, it is further designed as follows:

[0055] The opening on the bottommost water tray 3 has a groove formed by the inward concavity around the outer side, and a drain opening connecting the opening is opened near the edge of the groove; an upper protective plate 31 is welded around the opening and the upper protective plate 31 is located on the side of the groove near the opening; a lower guide plate 32 is welded around the groove at the bottom of the bottommost water tray 3.

[0056] Based on the above settings:

[0057] First, the opening can be used to thread wires to connect the devices in the upper and lower cavities. Simply attach a thin plate with its lower end tilted towards the drain opening to separate the water and the cable.

[0058] Secondly, the water on the water tray 3 enters the groove and then flows down from the drain opening. The upper guard plate 31 prevents the water from directly contacting the cable. Furthermore, the above embodiment reduces the amount of water flowing down from the upper water tray 3 in the lowermost water tray 3, so the chance of it overflowing the upper guard plate 31 is smaller.

[0059] Finally, the lower guide plate 32 blocks the rainwater flowing downwards, preventing it from flowing freely along the lower surface of the water tray 3.

[0060] Furthermore, the upper end of the upper guard plate 31 is bent toward the groove side, which reduces the chance of the cable being scratched when passing through the opening.

[0061] In one embodiment of this application, the water tray 3 has at least a rust-proof layer on its upper surface or the water tray is a rust-proof structure.

[0062] Example: Spray with a layer of anti-rust paint, or use Sgcc hot-rolled galvanized steel sheet.

[0063] In another embodiment of this application, a middle air duct 7 is provided at one end of the ventilation hole 3 on the rear door 22 facing the inside of the main housing 2. The middle air duct 7 can be two, each matching two enhanced heat dissipation boxes 4. One end of the middle air duct 7 is folded outward and fixed to the enhanced heat dissipation box 4 by screws and covers one ventilation hole 2 on the side wall. The other end approaches / contacts the inner end of the ventilation hole 3, that is, approaches / contacts the inner end of the ventilation hole 3.

[0064] According to the above settings, the heat generated by the enhanced heat dissipation box 4 can be directly transported to the ventilation port 3 through the intermediate air duct 7, so as to reduce the chance of the hot air leaving the enhanced heat dissipation box 4 escaping in large quantities into the main body 2 before entering the ventilation port, thereby further improving the heat dissipation performance.

[0065] In another embodiment of this application, a water immersion sensor is installed on the inner wall or bracket of the main housing 2. The water immersion sensor is positioned higher than the base 1 and is electrically connected to a controller. The controller is installed inside the main housing 2 and is electrically connected to an electronic switch for switching the circuit (main power line). An example of an electronic switch is a relay. The relay output terminal of the controller is connected to the coil of the relay. The normally open contacts of the relay are connected in series with the circuit that needs to be switched. The controller is powered by a separate circuit to ensure its operation.

[0066] When in use, the controller is configured as follows: if the feedback from the water immersion sensor indicates that it is normal and not submerged in water, the controller will close the relay; otherwise, the controller will disconnect the circuit.

[0067] Based on the above settings, the application can be made safer, preventing the equipment from continuing to operate and causing safety accidents when there is a risk of leakage or electric shock at high water levels.

[0068] This application also discloses a DC network manager.

[0069] The DC network manager is used as an integrated structure for electrical equipment, with the waterproof and heat dissipation structure described in any of the above embodiments.

[0070] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A waterproof and heat-dissipating structure, characterized in that, include: The base (1) has a hollow structure and an open top, and at least one side wall has multiple ventilation holes. as well as The main housing (2) is fixed to the base (1) and its interior is used to integrate various devices; The main body (2) is provided with a horizontal water tray (3), which horizontally divides the inner cavity of the main body (2) into an upper cavity and a lower cavity. The upper cavity is provided with at least one heat dissipation box (4). The heat dissipation box (4) has two ventilation holes on its two side walls and is used to install the main heating device. The lower cavity has at least one side wall provided with an electrical layout plate (5) for installing the device. The electrical appliance arrangement plate (5) is vertical, located above the opening on the base (1) and forms a vertical air duct with the water tray (3) and the equipment in the upper cavity. The lower part of the air duct is connected to the inner cavity of the base (1), and the upper part is connected to the ventilation hole two on one side wall of the enhanced heat dissipation box (4). The side wall of the main box (2) is provided with a ventilation hole three facing the heat exchange hole two on the other side wall of the enhanced heat dissipation box (4).

2. The waterproof and heat dissipation structure according to claim 1, characterized in that: The water-holding trays (3) are multiple and at least divided into two groups. One group is a PCS water-holding structure and the other group is a DCDC water-holding structure. The multiple water-holding trays (3) are arranged vertically. The water-holding trays (3) in the same group are adjacent and the lower group of water-holding trays (3) divides the inner cavity of the main box (2) into an upper cavity and a lower cavity. The water-holding tray (3) located at the bottom has an opening, and the base (1) is open both above and below. The opening is located above the openings at the top and bottom of the base (1). The other water-holding tray (3) has an opening two and a flow guiding unit (6). The flow guiding unit (6) is connected to the opening two upwards and approaches the other water-holding tray (3) located below downwards.

3. The waterproof and heat dissipation structure according to claim 2, characterized in that: The flow guiding unit (6) includes a flow guiding pipe (61) and a heat conducting plate (62). The upper end of the flow guiding pipe (61) is fixed to the corresponding water holding pan (3) and connected to the second opening, and the lower end is close to another water holding pan (3) located below. The side wall of the guide tube (61) is provided with multiple side air holes and a baffle (63) is fixed thereon. The side air holes are long and vertical. One end of the baffle (63) is fixed to the inner wall of the guide tube (61), and the other end is arc-shaped downward and located in front of the inner end of the side air hole. One end of the heat-conducting plate (62) is fixed to the outer wall of the guide pipe (61), and the other end is used to contact the heat source in the main box (2).

4. The waterproof and heat dissipation structure according to claim 3, characterized in that: The opening on the bottommost water tray (3) is located on the side of the water tray (3) away from the electrical appliance arrangement plate (5). The opening on the bottommost water tray (3) has a groove around its outer side, and a drain opening connecting the opening is opened near the edge of the groove. An upper guard plate (31) is provided around the opening, and the upper guard plate (31) is located on the side of the groove near the opening. A lower guide plate (32) is provided around the groove at the bottom of the bottommost water tray (3).

5. The waterproof and heat dissipation structure according to claim 4, characterized in that: The upper end of the upper guard plate (31) is bent toward the groove side.

6. The waterproof and heat dissipation structure according to claim 1, characterized in that: The water tray (3) has at least a rust-proof layer on its upper surface or the water tray (3) is a rust-proof structure.

7. The waterproof and heat dissipation structure according to claim 1, characterized in that: The ventilation hole three on the side wall of the main box (2) is provided with a middle air duct (7) at one end facing the inside of the main box (2). One end of the middle air duct (7) is fixed to the enhanced heat dissipation box (4) and covers the ventilation hole two on one side wall, while the other end is close to / contacts the inner end of the ventilation hole three.

8. The waterproof and heat dissipation structure according to claim 1, characterized in that: A water immersion sensor is provided at the lower part of the main body (2). The water immersion sensor is positioned higher than the base (1) and is electrically connected to a controller. The controller is electrically connected to an electronic switch for switching the circuit on and off.

9. A DC network manager, characterized in that: The waterproof and heat dissipation structure described in any one of claims 1-8 above is used as the integrated structure of the electrical equipment.

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