A cooling device for photovoltaic cell clusters

Abstract

This utility model relates to the field of battery cooling equipment technology, and discloses a cooling device for photovoltaic power generation battery clusters. It includes an energy storage battery box, with a liquid cooling mechanism on one side of the battery box. The liquid cooling mechanism includes a liquid cooling plate fixedly connected to one side of the battery box, multiple guide plates fixedly connected inside the liquid cooling plate, and multiple heat-conducting fins fixedly connected to both sides of the guide plates. An inlet pipe and an outlet pipe are fixedly connected to the other side of the liquid cooling plate, respectively. One side of the inlet and outlet pipes is connected to the output and input ends of a coolant circulation mechanism via pipelines. A sealing plate is fixedly connected to the side of the liquid cooling plate opposite to the battery box. The inverted L-shaped guide plates inside the liquid cooling plate divide the interior into multiple channels. After the coolant enters from the inlet pipe, it is diverted, shortening the flow distance and reducing the temperature difference of the coolant in different areas, resulting in more uniform cooling. Furthermore, the triangular heat-conducting fins on both sides of the guide plates increase the contact area with the coolant and agitate the liquid, further improving heat conduction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of battery cooling equipment technology, and in particular to a cooling device for photovoltaic power generation battery clusters. Background Technology

[0002] A photovoltaic power generation cell cluster is a power supply unit composed of multiple solar panels connected in series and parallel. The number of cell clusters is usually matched according to the system voltage requirements. It is connected to the combiner box, which concentrates the power and then transmits it to the inverter to convert it into usable power. It is an important part of the photovoltaic power station.

[0003] When a battery cluster is working, there is energy loss during the power generation process of the solar panels. This energy loss is converted into heat, which causes the battery to heat up. It needs to be cooled down by air cooling or liquid cooling. Traditional liquid cooling uses a single-channel circulation, where the coolant flows from the inlet to the outlet. The area that passes through first is cooled more effectively, while the area that follows absorbs heat and becomes less effective. This results in different temperatures in different parts of the battery cluster, with areas closer to the inlet being cooler and areas farther away being hotter. As a result, uneven temperatures can lead to inconsistent performance of each battery and shorten battery life. Utility Model Content

[0004] The purpose of this invention is to provide a cooling device for photovoltaic power generation battery clusters, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A cooling device for photovoltaic power generation battery clusters includes an energy storage battery box. A liquid cooling mechanism is provided on one side of the energy storage battery box. The liquid cooling mechanism includes a liquid cooling plate fixedly connected to one side of the energy storage battery box. Multiple guide plates are fixedly connected inside the liquid cooling plate. Multiple heat-conducting fins are fixedly connected to both sides of the guide plates. An inlet pipe and an outlet pipe are fixedly connected to the other side of the liquid cooling plate. One side of the inlet pipe and the outlet pipe is connected to the output end and the input end of a coolant circulation mechanism through pipelines. A sealing plate is fixedly connected to the side of the liquid cooling plate opposite to the energy storage battery box.

[0007] As a further preferred embodiment of this utility model, the top and bottom of the liquid cooling plate are fixedly connected with multiple lugs. When the liquid cooling plate and the energy storage battery box are fixedly connected to each other, the energy storage battery box can be installed in the battery rack with the help of the lugs on the top and bottom of the liquid cooling plate.

[0008] As a further preferred embodiment of this utility model, a sealing ring is fixedly connected to one side of the liquid cooling plate, and a first sealing groove is also provided on one side of the liquid cooling plate near the sealing ring. The sealing ring is used to realize the positioning and installation of the sealing plate, and cooperates with the first sealing groove to improve the connection and sealing between the sealing plate and the liquid cooling plate.

[0009] As a further preferred embodiment of this utility model, a partition is fixedly connected to the inner side of the liquid cooling plate near the outlet pipe. The partition, together with multiple guide plates, can divide the inner cavity of the liquid cooling plate and allow the coolant after heat exchange to enter the outlet pipe through the drainage channel formed by the partition and be discharged.

[0010] As a further preferred embodiment of this utility model, the guide plate is inverted L-shaped, dividing the inner cavity of the liquid cooling plate into multiple guide channels through multiple guide plates. This allows the coolant to enter the liquid cooling plate through the inlet pipe and then be distributed into multiple guide channels, thereby shortening the flow distance of the coolant, reducing the temperature difference of the coolant at different locations within the liquid cooling plate, and making the heat dissipation from different areas within the energy storage battery box more uniform.

[0011] As a further preferred embodiment of this utility model, the longitudinal cross-section of the heat-conducting sheet is triangular. On the one hand, the heat-conducting sheet can increase the contact area with the coolant and improve the heat conduction efficiency. On the other hand, it can cause the coolant flowing through the guide channel to be disturbed, thereby improving the heat conduction uniformity of the coolant in the guide channel.

[0012] As a further preferred embodiment of this utility model, a cover plate is fixedly connected to one side of the sealing plate relative to the liquid cooling plate, and a second sealing groove is fixedly opened on one side of the sealing plate near the cover plate. The sealing plate is fixedly connected to one side of the liquid cooling plate, and the cover plate is inserted into the liquid cooling plate and abuts against the partition and one side of the multiple guide plates. A sealing ring is inserted between the first sealing groove and the second sealing groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In this invention, the inverted L-shaped guide plate in the liquid cooling plate divides the interior into multiple channels. After the coolant enters from the inlet pipe, it is diverted, shortening the flow distance and reducing the temperature difference of the coolant in different places, resulting in more uniform cooling. In addition, the triangular heat-conducting fins on both sides of the guide plate not only increase the contact area with the coolant but also agitate the liquid, further improving the heat conduction efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the disassembled structure of the liquid cooling mechanism of this utility model;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is a schematic diagram of the sealing plate structure of this utility model;

[0019] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0020] In the diagram: 1. Energy storage battery box; 2. Liquid cooling mechanism; 3. Liquid cooling plate; 4. Guide plate; 5. Heat conduction plate; 6. Guide channel; 7. Liquid inlet pipe; 8. Liquid outlet pipe; 9. Sealing plate; 10. Ear seat; 11. Sealing ring; 12. First sealing groove; 13. Partition plate; 14. Drainage channel; 15. Cover plate; 16. Second sealing groove. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figures 1-5 As shown, the present invention provides a cooling device for a photovoltaic power generation battery cluster, including a battery storage box 1. A liquid cooling mechanism 2 is provided on one side of the battery storage box 1. The liquid cooling mechanism 2 includes a liquid cooling plate 3 fixedly connected to one side of the battery storage box 1. Multiple guide plates 4 are fixedly connected inside the liquid cooling plate 3. Multiple heat-conducting sheets 5 are fixedly connected to both sides of the guide plates 4. An inlet pipe 7 and an outlet pipe 8 are fixedly connected to the other side of the liquid cooling plate 3. The inlet pipe 7 and the outlet pipe 8 are connected to the output end and the input end of the coolant circulation mechanism through pipelines. A sealing plate 9 is fixedly connected to the side of the liquid cooling plate 3 opposite to the battery storage box 1.

[0023] like Figures 2-3 As shown, multiple lugs 10 are fixedly connected to the top and bottom of the liquid cooling plate 3. When the liquid cooling plate 3 and the energy storage battery box 1 are fixedly connected to each other, the energy storage battery box 1 can be installed in the battery rack with the help of the lugs 10 at the top and bottom of the liquid cooling plate 3.

[0024] like Figures 2-5As shown, a sealing ring 11 is fixedly connected to one side of the liquid cooling plate 3. A first sealing groove 12 is also provided on one side of the liquid cooling plate 3 near the sealing ring 11. The sealing ring 11 is used to position and install the sealing plate 9, and works with the first sealing groove 12 to improve the sealing performance between the sealing plate 9 and the liquid cooling plate 3. A partition 13 is fixedly connected to the inner side of the liquid cooling plate 3 near the outlet pipe 8. The partition 13, together with multiple guide plates 4, can divide the inner cavity of the liquid cooling plate 3, and allow the coolant after heat exchange to enter the outlet pipe 8 through the drainage channel 14 formed by the partition 13. The guide plates 4 are inverted L-shaped, dividing the inner cavity of the liquid cooling plate 3 into multiple guide channels 6 through the multiple guide plates 4. This allows the coolant to enter the liquid cooling plate 3 through the inlet pipe 7 and then be diverted into multiple guide channels 6, thereby reducing the cooling pressure. The shorter flow distance of the coolant reduces the temperature difference of the coolant at different locations within the liquid cooling plate 3, resulting in more uniform heat dissipation from different areas within the energy storage battery box 1. The longitudinal cross-section of the heat-conducting plate 5 is triangular. On the one hand, the heat-conducting plate 5 can increase the contact area with the coolant and improve the heat conduction efficiency. On the other hand, it can cause disturbance of the coolant flowing through the guide channel 6, improving the heat conduction uniformity of the coolant within the guide channel 6. A cover plate 15 is fixedly connected to one side of the sealing plate 9 relative to the liquid cooling plate 3. A second sealing groove 16 is fixedly opened on one side of the sealing plate 9 near the cover plate 15. The sealing plate 9 is fixedly connected to one side of the liquid cooling plate 3, and the cover plate 15 is inserted into the liquid cooling plate 3 and abuts against the partition plate 13 and one side of the multiple guide plates 4. A sealing ring is inserted between the first sealing groove 12 and the second sealing groove 16.

[0025] It should be noted that this utility model is a cooling device for photovoltaic power generation battery clusters. The coolant enters the liquid cooling plate 3 from the inlet pipe 7 through a circulation mechanism such as a circulation pump and pipeline, and then enters multiple inverted L-shaped guide plates 4, which divide the flow into multiple guide channels 6. This shortens the flow distance of a single stream of coolant, thereby reducing the temperature difference of the coolant at different locations within the liquid cooling plate 3. This allows the heat in each area of ​​the energy storage battery box 1 to be evenly removed. Furthermore, there are triangular heat-conducting plates 5 on both sides of the guide plates 4, which increase the contact area with the coolant and simultaneously agitate the liquid to improve the uniformity of heat conduction. There is a partition 13 on the inner side of the liquid cooling plate 3 near the outlet pipe 8, which forms a drain channel 14 with one of the guide plates 4. After absorbing heat, the coolant flows out from the outlet pipe 8 through this channel and enters the circulation mechanism such as the circulation pump. It is then subjected to heat exchange and cooling treatment by external heat exchange equipment to complete the circulation.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cooling device for photovoltaic power generation cell clusters, characterized in that: The device includes an energy storage battery box (1), and a liquid cooling mechanism (2) is provided on one side of the energy storage battery box (1). The liquid cooling mechanism (2) includes a liquid cooling plate (3) fixedly connected to one side of the energy storage battery box (1). Multiple guide plates (4) are fixedly connected inside the liquid cooling plate (3). Multiple heat-conducting plates (5) are fixedly connected to both sides of the guide plates (4). An inlet pipe (7) and an outlet pipe (8) are fixedly connected to the other side of the liquid cooling plate (3). The inlet pipe (7) and the outlet pipe (8) are connected to the output end and input end of the coolant circulation mechanism through pipelines. A sealing plate (9) is fixedly connected to the side of the liquid cooling plate (3) opposite to the energy storage battery box (1).

2. The cooling device for photovoltaic power generation cell clusters according to claim 1, characterized in that: The liquid cooling plate (3) has multiple lugs (10) fixedly connected to its top and bottom.

3. The cooling device for photovoltaic power generation cell clusters according to claim 1, characterized in that: A sealing ring (11) is fixedly connected to one side of the liquid cooling plate (3), and a first sealing groove (12) is also provided on one side of the liquid cooling plate (3) near the sealing ring (11).

4. The cooling device for photovoltaic power generation cell clusters according to claim 1, characterized in that: A partition (13) is fixedly connected to the inner side of the liquid cooling plate (3) near the liquid outlet pipe (8).

5. The cooling device for photovoltaic power generation cell clusters according to claim 1, characterized in that: The guide plate (4) is inverted L-shaped.

6. The cooling device for a photovoltaic power generation cell cluster according to claim 1, characterized in that: The longitudinal cross-section of the heat-conducting sheet (5) is triangular.

7. A cooling device for photovoltaic power generation cell clusters according to claim 3, characterized in that: The sealing plate (9) is fixedly connected to a cover plate (15) on one side of the liquid cooling plate (3). A second sealing groove (16) is fixedly opened on one side of the sealing plate (9) near the cover plate (15). The sealing plate (9) is fixedly connected to one side of the liquid cooling plate (3), and the cover plate (15) is inserted into the liquid cooling plate (3) and abuts against the partition plate (13) and one side of the multiple guide plates (4). A sealing ring is inserted between the first sealing groove (12) and the second sealing groove (16).

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