Heat dissipation system for flywheel energy storage device

Abstract

The utility model discloses a flywheel energy storage device's heat dissipation system, flywheel energy storage device's heat dissipation system includes: liquid cooling subassembly, liquid cooling subassembly includes liquid cooling pipeline, inlet pipeline and outlet pipeline, and liquid cooling pipeline is suitable for the circumferential ring around setting of flywheel energy storage device's casing outer surface, and inlet pipeline and outlet pipeline all are suitable for the axial extension setting of flywheel energy storage device, and inlet pipeline is linked together with the import of liquid cooling pipeline, and outlet pipeline is linked together with the export of liquid cooling pipeline. Thus, through setting liquid cooling subassembly in flywheel energy storage device's casing outer surface circumferential ring around setting and along the axial extension, setting liquid cooling subassembly by liquid cooling pipeline, inlet pipeline and outlet pipeline again, the structure and forming mode of pipeline are all relatively simple, like this not only can make liquid cooling subassembly be suitable for the heat exchange with the casing of flywheel energy storage device, but also can be convenient for the production of liquid cooling subassembly.

Description

Technical Field

[0001] This utility model relates to the field of flywheel energy storage technology, and in particular to a heat dissipation system for a flywheel energy storage device. Background Technology

[0002] Flywheel energy storage devices have concentrated heat sources under high power density. The vacuum environment inside the device blocks conventional convection heat transfer, and frequent fluctuations in operating conditions exacerbate heat accumulation. Overheating can lead to fatal failures such as permanent magnet demagnetization and insulation failure. Therefore, it is necessary to enhance the heat dissipation capacity of flywheel energy storage devices to ensure their stable operation under complex conditions.

[0003] In existing technologies, the molding and assembly of liquid cooling pipeline structures in flywheel energy storage devices are quite complex. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a heat dissipation system for a flywheel energy storage device, which has a simple structure and is easy to manufacture.

[0005] A heat dissipation system for a flywheel energy storage device according to an embodiment of the present invention includes: a liquid cooling assembly adapted to be fitted to the outer surface of the flywheel energy storage device housing and extending along the axial direction of the flywheel energy storage device; a coolant disposed in the liquid cooling assembly; the liquid cooling assembly including a liquid cooling pipe, an inlet pipe, and an outlet pipe; the liquid cooling pipe adapted to be circumferentially arranged around the outer surface of the flywheel energy storage device housing; both the inlet pipe and the outlet pipe adapted to extend axially in the flywheel energy storage device; the inlet pipe communicating with the inlet of the liquid cooling pipe; and the outlet pipe communicating with the outlet of the liquid cooling pipe; and a cooling fan adapted to be disposed on the outside of the housing and corresponding radially to the liquid cooling assembly in the housing.

[0006] Therefore, by setting a liquid cooling component around the outer surface of the flywheel energy storage device and extending it axially, and then setting the liquid cooling component to consist of a liquid cooling pipe, an inlet pipe and an outlet pipe, the structure and forming method of the pipe are relatively simple. This not only makes the liquid cooling component suitable for contact heat exchange with the flywheel energy storage device, but also facilitates the production of the liquid cooling component.

[0007] According to some embodiments of the present invention, there are at least two cooling fans, and the at least two cooling fans are adapted to be arranged opposite each other in the radial direction of the housing.

[0008] According to some embodiments of the present invention, the cooling fan is at least one of an axial fan and a cross-flow fan.

[0009] According to some embodiments of the present invention, there are multiple liquid cooling pipes, and the multiple liquid cooling pipes are adapted to be arranged sequentially in the axial direction of the flywheel energy storage device.

[0010] According to some embodiments of the present invention, the liquid inlet pipe is provided with a liquid inlet, the liquid outlet pipe is provided with a liquid outlet, and the liquid inlet and the liquid outlet are respectively provided at both ends of the liquid cooling component along the axial direction of the flywheel energy storage device.

[0011] According to some embodiments of the present invention, the inlet pipe and the outlet pipe are adapted to be arranged adjacent to and fitted together in the circumferential direction of the flywheel energy storage device.

[0012] According to some embodiments of the present invention, the liquid inlet pipe is provided with a first snap-fit ​​part, and the liquid outlet pipe is provided with a second snap-fit ​​part, wherein the first snap-fit ​​part and the second snap-fit ​​part are detachably snap-fitted together.

[0013] According to some embodiments of the present invention, the heat dissipation system of the flywheel energy storage device further includes a heat-conducting component, which is disposed between two adjacent liquid cooling pipes in the axial direction of the flywheel energy storage device, and the heat-conducting component is fitted to the liquid cooling pipes.

[0014] According to some embodiments of the present invention, the heat-conducting element is disposed between the liquid cooling pipe and the housing of the flywheel energy storage device, and the heat-conducting element is adapted to be fitted to the housing of the flywheel energy storage device.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a partial schematic diagram of a flywheel energy storage device according to an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram showing the connection of the inlet and outlet pipes of the heat dissipation system according to an embodiment of the present utility model.

[0019] Figure 3 This is a schematic diagram of the disassembly of the inlet and outlet pipes of the heat dissipation system according to an embodiment of the present utility model.

[0020] Figure label:

[0021] 1000. Flywheel energy storage device;

[0022] 100. Heat dissipation system; 200. Housing;

[0023] 10. Liquid cooling components;

[0024] 11. Liquid cooling pipe; 111. Inlet; 112. Outlet;

[0025] 12. Liquid inlet pipe; 121. Liquid inlet;

[0026] 13. Liquid outlet pipe; 131. Liquid outlet;

[0027] 20. Cooling fan; 30. Heat-conducting components. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary.

[0029] The following is for reference. Figures 1-3 Describes the heat dissipation system 100 of the flywheel energy storage device 1000 according to an embodiment of the present utility model.

[0030] According to the embodiments of this utility model, in conjunction with Figure 1 As shown, the heat dissipation system 100 of the flywheel energy storage device 1000 in this embodiment of the present invention mainly includes: a liquid cooling component 10 and a cooling fan 20. The liquid cooling component 10 is adapted to be fitted to the outer surface of the housing 200 of the flywheel energy storage device 1000, and a coolant is provided in the liquid cooling component 10. The coolant in the liquid cooling component 10 can exchange heat with the housing 200 of the flywheel energy storage device 1000. In this way, the heat generated inside the flywheel energy storage device 1000 can be transferred to the liquid cooling component 10 and carried away by the liquid cooling component 10, thereby realizing the heat dissipation of the flywheel energy storage device 1000.

[0031] The flywheel energy storage device 1000 has a flywheel rotor, stator, main shaft, and magnetic levitation bearings arranged axially within its housing 200. During operation, the flywheel energy storage device 1000 experiences concentrated heat sources at high power densities. Its internal vacuum environment blocks conventional convection heat transfer, and frequent fluctuations in operating conditions exacerbate heat accumulation. Overheating can lead to fatal malfunctions such as permanent magnet demagnetization and insulation failure.

[0032] In an embodiment of this utility model, the liquid cooling component 10 is provided to extend along the axial direction of the flywheel energy storage device 1000. This increases the contact area between the liquid cooling component 10 and the housing 200 of the flywheel energy storage device 1000, allowing the liquid cooling component 10 to be closer to multiple heat sources inside the housing 200. This increases the instantaneous heat exchange between the housing 200 and the liquid cooling component 10, thereby enabling the heat dissipation system 100 to meet the heat dissipation requirements of the flywheel energy storage device 1000.

[0033] Combination Figures 1-3 As shown, the liquid cooling assembly 10 includes a liquid cooling pipe 11, an inlet pipe 12, and an outlet pipe 13. The liquid cooling pipe 11 is adapted to be arranged circumferentially around the outer surface of the housing 200 of the flywheel energy storage device 1000. Specifically, the liquid cooling pipe 11 is fitted to the housing 200 around its circumference, which increases the contact area between the liquid cooling pipe 11 and the housing 200 of the flywheel energy storage device 1000. This allows heat from any point on the circumference of the housing 200 to be absorbed by the coolant in the liquid cooling pipe 11 in a timely manner. This improves the heat exchange efficiency between the liquid cooling assembly 10 and the housing 200 of the flywheel energy storage device 100, thereby improving the heat dissipation efficiency of the heat dissipation system 100 for the flywheel energy storage device 1000.

[0034] Furthermore, the liquid inlet pipe 12 is connected to the inlet 111 of the liquid cooling pipe 11, and the liquid outlet pipe 13 is connected to the outlet 112 of the liquid cooling pipe 11. A coolant pump is installed outside the flywheel energy storage device 1000. Both the liquid inlet pipe 12 and the liquid outlet pipe 13 are connected to the coolant pump. This allows the coolant pump to provide power for the flow of coolant in the liquid cooling assembly 10, thereby realizing the circulation of coolant in the liquid cooling assembly 10.

[0035] Furthermore, both the inlet pipe 12 and the outlet pipe 13 are adapted to extend axially in the flywheel energy storage device 1000. In this way, while ensuring that the liquid cooling pipe 11 is connected to both the inlet pipe 12 and the outlet pipe 13, on the one hand, the occupancy of the inlet pipe 12 and the outlet pipe 13 on the circumferential area of ​​the housing 200 can be reduced, thereby increasing the contact area between the liquid cooling pipe 11 and the housing 200. On the other hand, it is convenient to connect the inlet pipe 12 to the coolant pump and the outlet pipe 13 to the coolant pump.

[0036] According to the embodiments of this utility model, the liquid cooling pipe 11, the liquid inlet pipe 12 and the liquid outlet pipe 13 have simple structures, are easy to produce and process, and can simplify the manufacturing process of the liquid cooling component 10.

[0037] Furthermore, the cooling fan 20 is adapted to be disposed on the outside of the housing 200 and corresponds radially to the liquid cooling assembly 10 in the housing 200. Specifically, in the embodiment of this utility model, a cooling fan 20 is arranged on the outside of the liquid cooling assembly 10, and the cooling fan 20 can blow air toward the liquid cooling assembly 10. This can accelerate the airflow around the liquid cooling assembly 10, allowing the air to carry away the heat radiated by the liquid cooling assembly 10. Compared with a single liquid cooling mode, the embodiment of this utility model can improve the heat dissipation efficiency of the liquid cooling assembly 10.

[0038] This configuration allows the coolant in the liquid cooling component 10 to absorb more heat from the flywheel energy storage device 1000 housing 200. This enables the flywheel energy storage device 1000 to meet the heat dissipation requirements of instantaneous high heat during instantaneous charging and discharging. This timely and effective heat dissipation of the flywheel energy storage device 1000 helps reduce its power consumption.

[0039] Therefore, in this embodiment of the utility model, by setting a liquid cooling component 10 circumferentially around the outer surface of the housing 200 of the flywheel energy storage device 1000 and extending it axially, and by setting the liquid cooling component 10 to consist of a liquid cooling pipe 11, a liquid inlet pipe 12 and a liquid outlet pipe 13, the structure and forming method of the pipes are relatively simple. This not only makes the liquid cooling component 10 suitable for contact heat exchange with the housing 200 of the flywheel energy storage device 1000, but also facilitates the production of the liquid cooling component 10.

[0040] Combination Figure 1 As shown, there are at least two cooling fans 20, which are adapted to be arranged radially opposite each other on the housing 200. Specifically, by arranging multiple fans around the liquid cooling assembly 10, more air can be driven to flow around the liquid cooling assembly 10, thereby increasing the airflow speed and flow range around the liquid cooling assembly 10, which in turn helps to improve the heat dissipation efficiency of the liquid cooling assembly 10. In this way, the heat dissipation efficiency of the flywheel energy storage device 1000 can be further improved to cope with the high heat conditions of the flywheel energy storage device 1000.

[0041] Furthermore, at least two cooling fans 20 are arranged opposite each other in the radial direction of the housing 200. This not only increases the heat dissipation efficiency of the liquid cooling component 10 with a small number of cooling fans 20, but also makes the air around the liquid cooling component 10 flow evenly, prevents the air around the liquid cooling component 10 from becoming turbulent, and ensures that the air after heat exchange is blown away from the liquid cooling component 10, thereby improving the heat dissipation effect of the cooling fans 20.

[0042] According to an embodiment of the present invention, the cooling fan 20 is at least one of an axial fan and a cross-flow fan.

[0043] Specifically, axial fans have a large air volume and high efficiency. Furthermore, axial fans have a compact and simple structure, occupy little space, and have low cost. Using an axial fan as the cooling fan 20 in this embodiment of the utility model can not only provide a large air volume for the flywheel energy storage device 1000, which is beneficial to improving the heat dissipation efficiency of the flywheel energy storage device 1000, but also reduce the area occupied by the cooling fan 20, which is beneficial to improving the structural compactness of the flywheel energy storage device 1000.

[0044] The cross-flow fan provides uniform airflow and covers a wide area, forming a continuous and stable airflow. It is suitable for supplying air to the radial side of the flywheel energy storage device 1000 in this embodiment of the invention, thereby accelerating the airflow on the surface of the axially extended liquid cooling component 10 in this embodiment of the invention, resulting in high heat dissipation efficiency.

[0045] Combination Figures 1-3 As shown, there are multiple liquid cooling pipes 11, which are arranged sequentially along the axial direction of the flywheel energy storage device 1000. This arrangement allows the liquid cooling pipes 11 to fit as closely as possible to the cylindrical surface of the flywheel energy storage device 1000 housing 200. This allows the multiple liquid cooling pipes 11 to cover the radial side of the housing 200, which can improve the heat exchange between the liquid cooling pipes 11 and the housing 200, thereby improving the heat dissipation efficiency of the heat dissipation system 100 for the flywheel energy storage device 1000.

[0046] Furthermore, multiple liquid cooling pipes 11 are arranged axially, so that the inlets 111 of multiple liquid cooling pipes 11 are connected to the axially extending liquid inlet pipes 12, and the inlets 111 of multiple liquid cooling pipes 11 are connected to the axially extending liquid outlet pipes 13. Thus, the coolant circulation in multiple liquid cooling pipes 11 can be achieved through a set of liquid inlet pipes 12 and liquid outlet pipes 13. The structure is simple, easy to install, and has high heat exchange efficiency.

[0047] Combination Figures 1-3 As shown, the liquid inlet pipe 12 is provided with a liquid inlet 121, and the liquid outlet pipe 13 is provided with a liquid outlet 131. The liquid inlet 121 and the liquid outlet 131 are respectively located at both ends of the liquid cooling assembly 10 along the axial direction of the flywheel energy storage device 1000. This arrangement can extend the flow path of the coolant in the liquid cooling assembly 10. For example, the coolant near the liquid inlet 121 needs to flow at least circumferentially along the shell 200 before flowing out of the storage port. This can increase the heat exchange time between the unit volume of coolant and the shell 200, which is beneficial to the full utilization of the coolant in the liquid cooling pipe 11.

[0048] Combination Figure 1 and Figure 2As shown, the inlet pipe 12 and the outlet pipe 13 are adapted to be arranged adjacent to each other in the circumferential direction of the flywheel energy storage device 1000. This allows both the inlet pipe 12 and the outlet pipe 13 to be connected to the circumferential end of the liquid cooling pipe 11, ensuring that the liquid cooling component 10 is in close contact with the radial side of the housing 200 of the flywheel energy storage device 1000, thereby improving the heat dissipation efficiency of the liquid cooling component 10. On the other hand, the liquid cooling pipe 11 in this embodiment is a flexible pipe. When the inlet pipe 12 and the outlet pipe 13 are connected, the liquid cooling pipe 11 can be bent so that it can be arranged around the circumferential outside of the housing 200. This allows the liquid cooling pipe 11 to straighten back to its original position after the inlet pipe 12 and the outlet pipe 13 are disconnected.

[0049] Furthermore, the inlet pipe 12 and the outlet pipe 13 are fitted together, which allows the liquid cooling component 10 to be connected to both ends of the circumferential end of the flywheel energy storage device 1000 housing 200. This ensures that the liquid cooling component 10 is fully fitted to the housing 200 in the circumferential direction. This not only allows the liquid cooling component 10 to exchange heat with the housing 200 as much as possible, but also can cope with the working condition of instantaneous heat generation at any position in the circumferential direction of the housing 200.

[0050] According to an embodiment of the present invention, a first snap-fit ​​part is provided on the liquid inlet pipe 12, and a second snap-fit ​​part is provided on the liquid outlet pipe 13. The first snap-fit ​​part and the second snap-fit ​​part are detachably snap-fitted together.

[0051] Specifically, the inlet pipe 12 and the outlet pipe 13 are detachably connected through the cooperation of the first and second snap-fit ​​parts. This facilitates the assembly and disassembly of the liquid cooling assembly 10, making it easier to maintain and replace. If any of the liquid cooling pipes 11, inlet pipe 12, and outlet pipe 13 is damaged, the individual component can be replaced to allow the liquid cooling assembly 10 to continue to be used. This improves the utilization rate of the liquid cooling assembly 10 and helps to save resources.

[0052] Combination Figure 1 and Figure 2 As shown, the heat dissipation system 100 of the flywheel energy storage device 1000 also includes a heat-conducting component 30. The heat-conducting component 30 is disposed between two adjacent liquid cooling pipes 11 in the axial direction of the flywheel energy storage device 1000, and the heat-conducting component 30 is fitted to the liquid cooling pipes 11.

[0053] Specifically, a heat-conducting component 30 is filled between two adjacent liquid cooling pipes 11, and the heat-conducting component 30 in this utility model is a heat-conducting adhesive. This not only helps to improve the heat exchange efficiency of the two adjacent liquid cooling pipes 11, but also fixes the two adjacent liquid cooling pipes 11, which helps to ensure the structural reliability of the liquid cooling pipes 11 outside the flywheel energy storage device 1000 housing 200.

[0054] Combination Figure 1 and Figure 2 As shown, the heat-conducting component 30 is disposed between the liquid cooling pipe 11 and the housing 200 of the flywheel energy storage device 1000, and the heat-conducting component 30 is adapted to be fitted to the housing 200 of the flywheel energy storage device 1000.

[0055] Specifically, the thermally conductive component 30 in this invention is a thermally conductive adhesive. The thermally conductive adhesive can wrap the liquid cooling pipe 11 around the radially outer side of the housing 200 of the flywheel energy storage device 1000, and the thermally conductive adhesive is attached to the housing 200. This not only fixes the liquid cooling pipe 11 to the outside of the housing 200 to ensure the structural stability of the liquid cooling component 10, but also improves the heat exchange efficiency between the housing 200 and the liquid cooling pipe 11, thereby improving the heat dissipation effect of the heat dissipation system 100.

[0056] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "circumferential", "radial", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 of this utility model.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0058] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A heat dissipation system for a flywheel energy storage device, characterized in that, include: A liquid cooling assembly (10) is adapted to be fitted to the outer surface of the housing (200) of the flywheel energy storage device (1000) and extend along the axial direction of the flywheel energy storage device (1000). The liquid cooling assembly (10) is provided with coolant. The liquid cooling assembly (10) includes a liquid cooling pipe (11), an inlet pipe (12), and an outlet pipe (13). The liquid cooling pipe (11) is adapted to be arranged circumferentially around the outer surface of the housing (200) of the flywheel energy storage device (1000). The inlet pipe (12) and the outlet pipe (13) are both adapted to extend along the axial direction of the flywheel energy storage device (1000). The inlet pipe (12) is connected to the inlet (111) of the liquid cooling pipe (11), and the outlet pipe (13) is connected to the outlet (112) of the liquid cooling pipe (11). Cooling fan (20), the cooling fan (20) is adapted to be disposed on the outside of the housing (200) and to correspond radially to the liquid cooling assembly (10) in the housing (200).

2. The heat dissipation system of the flywheel energy storage device according to claim 1, characterized in that, There are at least two cooling fans (20), and the at least two cooling fans (20) are adapted to be arranged opposite each other in the radial direction of the housing (200).

3. The heat dissipation system of the flywheel energy storage device according to claim 1, characterized in that, The cooling fan (20) is at least one of an axial fan and a cross-flow fan.

4. The heat dissipation system of the flywheel energy storage device according to claim 1, characterized in that, There are multiple liquid cooling pipes (11), and the multiple liquid cooling pipes (11) are adapted to be arranged sequentially in the axial direction of the flywheel energy storage device (1000).

5. The heat dissipation system of the flywheel energy storage device according to claim 1, characterized in that, The liquid inlet pipe (12) is provided with a liquid inlet (121), and the liquid outlet pipe (13) is provided with a liquid outlet (131). The liquid inlet (121) and the liquid outlet (131) are respectively located at both ends of the liquid cooling component (10) along the axial direction of the flywheel energy storage device (1000).

6. The heat dissipation system of the flywheel energy storage device according to claim 1, characterized in that, The inlet pipe (12) and the outlet pipe (13) are adapted to be arranged adjacent to and fitted in the circumferential direction of the flywheel energy storage device (1000).

7. The heat dissipation system of the flywheel energy storage device according to claim 1, characterized in that, The inlet pipe (12) is provided with a first snap-fit ​​part, and the outlet pipe (13) is provided with a second snap-fit ​​part. The first snap-fit ​​part and the second snap-fit ​​part are detachably snap-fitted together.

8. The heat dissipation system of the flywheel energy storage device according to claim 4, characterized in that, It also includes a heat-conducting component (30), which is disposed between two adjacent liquid cooling pipes (11) in the axial direction of the flywheel energy storage device (1000), and the heat-conducting component (30) is fitted to the liquid cooling pipes (11).

9. The heat dissipation system of the flywheel energy storage device according to claim 8, characterized in that, The heat-conducting component (30) is disposed between the liquid cooling pipe (11) and the housing (200) of the flywheel energy storage device (1000), and the heat-conducting component (30) is adapted to fit in close contact with the housing (200) of the flywheel energy storage device (1000).

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