Wind and liquid double-cold energy storage device

Abstract

The air and liquid double-cold energy storage device comprises an energy storage cabinet, a plurality of containing cavities are formed in the energy storage cabinet, each containing cavity is provided with an opening facing a cabinet door, a liquid cooling flow channel is formed in the side wall of each containing cavity or a liquid cooling pipeline is arranged on the inner wall of each containing cavity, and a first air inlet is formed in the side wall, opposite to the cabinet door, of each containing cavity; the cabinet door is provided with an air outlet; the energy storage batteries are in one-to-one correspondence with the accommodating cavities and enter and exit from the accommodating cavities through the openings; the air cooling system comprises a first fan assembly and a second fan assembly, and the first fan assembly is arranged in the cabinet body and communicates with the first air inlet; the cabinet body is provided with a second air inlet, and the second fan assembly is arranged outside the cabinet body and communicated with the second air inlet. Through combined use of the two cooling modes, the control capability of the internal temperature of the energy storage device can be greatly improved, the cooling effect and the cooling efficiency are improved, a good and stable working environment is provided for the energy storage battery, and the risk of thermal runaway detonation of the energy storage battery is reduced.

Description

Technical Field

[0001] This application belongs to the field of energy storage technology, specifically relating to a wind and liquid dual-cooling energy storage device. Background Technology

[0002] With the high proportion of renewable energy integration, energy storage, as an energy regulation technology decoupling time and space, provides a new approach for grid emergency response and flexible regulation by coordinating and optimizing the operation of power plants, grids, loads, and flexible loads. Based on the grid's functional requirements for energy storage, its application scenarios are typically categorized as generation-side, grid-side, user-side, microgrids, and distributed generation. Distributed energy storage, as an indispensable part of the energy transition, operates in conjunction with distributed power sources. This not only improves the economic efficiency of grid operation but also smooths out renewable energy fluctuations and tracks planned output, thereby promoting the absorption of renewable energy.

[0003] Existing energy storage batteries typically consist of dozens to hundreds of lithium batteries, which have high energy density and power density, but also generate a lot of heat. If thermal runaway occurs during the use of an energy storage battery, it can explode and burn in a short period of time.

[0004] This shows that existing technologies still have certain shortcomings. Utility Model Content

[0005] This application provides a wind- and liquid-cooled energy storage device to solve at least one of the above-mentioned technical problems.

[0006] The technical solution adopted in this application is as follows:

[0007] A wind- and liquid-cooled dual-cooling energy storage device, comprising:

[0008] An energy storage cabinet includes a cabinet body and a cabinet door. The energy storage cabinet has multiple receiving cavities inside, and each receiving cavity has an opening facing the cabinet door. The side wall of each receiving cavity is provided with a liquid cooling channel or the inner wall of the receiving cavity is provided with a liquid cooling pipe. The side wall of the receiving cavity opposite to the cabinet door is provided with a first air inlet, and the cabinet door is provided with an air outlet.

[0009] An energy storage battery is provided, with each energy storage battery corresponding to one of the receiving cavities, and the energy storage battery enters and exits the receiving cavity through the opening;

[0010] The air-cooled system includes a first fan assembly and a second fan assembly. The first fan assembly is disposed in the cabinet and connected to the first air inlet. The cabinet also has a second air inlet, and the second fan assembly is connected to the second air inlet.

[0011] The above structure can simultaneously cool the energy storage battery with air and liquid. The combination and complementarity of the two cooling methods can greatly improve the cooling effect and efficiency of the energy storage battery, thereby providing a good and stable working environment for the energy storage battery and reducing the risk of thermal runaway and explosion.

[0012] In a preferred embodiment of this application, the first fan assembly includes a first fan and an air guide shroud. The air guide shroud includes multiple air guide outlets, and the multiple air guide outlets are configured to correspond one-to-one with the first air inlets of the multiple receiving cavities; or, the air guide shroud is provided with only one air guide outlet, and the air guide shroud is configured to correspond one-to-one with the first air inlets.

[0013] In the above scheme, the setting of the air guide shroud allows the cooling airflow generated by the first fan to be concentrated into the first air inlet, which helps to reduce air pressure loss and thus improve performance.

[0014] In a preferred embodiment of this application, along the air intake direction of the first air inlet, the air outlet sequentially includes a contraction section, a throat, and an expansion section; perpendicular to the axial direction of the expansion section, the maximum cross-sectional area of ​​the expansion section is not greater than the cross-sectional area of ​​the first air inlet.

[0015] In the above scheme, the air outlet has a Laval nozzle structure, which can accelerate the cooling airflow passing through the air outlet, thereby increasing the flow rate and flow rate of the cooling gas entering the cavity, and thus improving the air cooling effect and efficiency.

[0016] In a preferred embodiment of this application, the sidewall of the receiving cavity is provided with a support protrusion, the support protrusion is in contact with the outer wall of the energy storage battery, and a heat dissipation channel is formed between the energy storage battery, the support protrusion and the inner wall of the receiving cavity.

[0017] In the above scheme, by setting a support protrusion between the energy storage battery and the housing cavity to form a heat dissipation channel, the stability of the air path when the cooling airflow flows in the heat dissipation channel can be better guaranteed, and the risk of turbulence and turbulence affecting the cooling effect can be reduced.

[0018] In a preferred embodiment of this application, the support protrusion includes a first protrusion disposed on the side wall of the receiving cavity opposite to the opening and a second protrusion disposed on the top wall, bottom wall and left and right side walls of the receiving cavity; the first protrusion is arranged radially and the second protrusion extends from the opening to the side wall of the receiving cavity opposite to the opening along the direction in which the energy storage battery enters and exits the receiving cavity.

[0019] In a preferred embodiment of this application, the first air inlet is provided corresponding to the heat dissipation duct.

[0020] In a preferred embodiment of this application, a plurality of the receiving cavities are arranged vertically inside the cabinet. The second fan assembly includes a second fan disposed at the bottom of the cabinet and an exhaust fan disposed at the top of the cabinet. The bottom of the cabinet is provided with a second air inlet, the second fan is connected to the second air inlet, and the top of the cabinet is provided with an exhaust vent, the exhaust fan being disposed at the exhaust vent.

[0021] In the above scheme, by setting a second fan component, the gas exchange rate inside and outside the energy storage cabinet can be flexibly adjusted, which is convenient to work with the aforementioned liquid cooling and air cooling methods to keep the internal temperature environment of the energy storage cabinet constant.

[0022] As a preferred embodiment of this application, a temperature monitoring component is also included, which includes a cavity temperature sensor for monitoring the temperature inside the cavity, an energy storage battery temperature sensor for monitoring the temperature of the energy storage battery, and a cabinet temperature sensor for monitoring the temperature inside the cabinet.

[0023] In the above scheme, the temperature monitoring component can monitor the internal temperature of the containment cavity, the temperature of the energy storage battery, and the internal temperature of the cabinet in real time, which makes it easy to grasp the working status of the energy storage device in real time, and also makes it easy to adjust the working conditions of the air cooling and liquid cooling devices in a timely manner according to the changes of the above temperature indicators.

[0024] In a preferred embodiment of this application, the cabinet is further provided with an installation area, the installation area is provided with a liquid cooling unit, and the liquid cooling unit is connected to the liquid cooling channel and the liquid cooling pipe.

[0025] In a preferred embodiment of this application, a control unit is also included, which is connected to the air-cooling system and the liquid-cooling unit respectively, and the air-cooling system and the liquid-cooling unit are controlled in conjunction with each other through the control unit.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0027] The air-liquid dual-cooling energy storage device in this application integrates both air-cooling and liquid-cooling methods. The combined use of these two methods significantly improves the control over the internal temperature of the energy storage device, enhancing the cooling effect and efficiency of the energy storage battery. This provides a good and stable operating environment for the battery, reducing the risk of thermal runaway and explosion. Furthermore, the temperature monitoring components and control unit enable automated and intelligent operation of the entire energy storage device's temperature control, greatly reducing the workload of manual monitoring and significantly improving the response rate compared to manual monitoring, facilitating timely problem detection and resolution. Attached Figure Description

[0028] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0029] Figure 1 This is a schematic diagram of the cavity structure when liquid cooling channels are provided inside the sidewall of the cavity in an example.

[0030] Figure 2 This is a schematic diagram of the structure of a cavity with liquid-cooled pipes installed on the inner wall, as shown in an example.

[0031] Figure 3 This is a schematic diagram of a structure in which an energy storage battery is placed in a receiving cavity, as shown in an example.

[0032] Figure 4 This is a partial side-section diagram of an energy storage battery disposed in a housing cavity in an example.

[0033] Figure 5 This is a partial structural schematic diagram of an example of a dual-cooling (wind and liquid) energy storage device.

[0034] Figure 6 This is a front view schematic diagram of an example of a dual-cooling (wind and liquid) energy storage device.

[0035] Figure 7 This is a schematic diagram of the electrical connections between the components of an example wind and liquid dual-cooling energy storage device.

[0036] List of components and reference numerals:

[0037] 1 Energy storage cabinet, 11 Cabinet body, 111 Second air inlet, 112 Air outlet, 12 Cabinet door, 121 Air outlet, 13 Receiving cavity, 131 Liquid cooling channel, 132 Liquid cooling pipe, 133 Support protrusion, 1331 First protrusion, 1332 Second protrusion, 14 Installation area, 15 Heat dissipation channel;

[0038] 2 energy storage batteries;

[0039] 3. Air-cooled system, 31. First fan, 32. Air guide shroud, 321. Air guide outlet, 3211. Contraction section, 3212. Throat, 3213. Expansion section, 33. Second fan, 34. Exhaust fan;

[0040] 4 Temperature monitoring components, 41 Receptacle temperature sensor, 42 Energy storage battery temperature sensor, 43 Cabinet temperature sensor;

[0041] 5. Liquid cooling units;

[0042] 6. Control unit. Detailed Implementation

[0043] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0044] Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of this application and the features thereof can be combined with each other.

[0045] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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 of this application.

[0046] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0047] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0048] Reference Figure 1-7As shown, this application provides a dual-cooling (air and liquid) energy storage device, comprising: an energy storage cabinet 1, including a cabinet body 11 and a cabinet door 12, the energy storage cabinet 1 having multiple receiving cavities 13 inside, each receiving cavity 13 having an opening facing the cabinet door 12, the side wall of the receiving cavity 13 having a liquid cooling channel 131 or the inner wall of the receiving cavity 13 having a liquid cooling pipe 132, the side wall of the receiving cavity 13 opposite to the cabinet door 12 having a first air inlet, and the cabinet door 12 having an air outlet 121; an energy storage battery 2, the energy storage battery 2 being arranged one-to-one with the receiving cavity 13, the energy storage battery 2 entering and exiting the receiving cavity 13 through the opening; and an air-cooling system 3, including a first fan 31 assembly and a second fan 33 assembly, the first fan 31 assembly being disposed in the cabinet body 11 and connected to the first air inlet; the cabinet body 11 also having a second air inlet 111, the second fan 33 assembly being disposed outside the cabinet body 11 and connected to the second air inlet 111.

[0049] In the above scheme, by setting up liquid cooling channels 131 or liquid cooling pipes 132, the energy storage battery 2 inside the housing cavity 13 can be directly cooled. Combined with the first fan 31 assembly, the gas exchange rate inside and outside the housing cavity 13 can be increased, resulting in a more uniform temperature distribution throughout the housing cavity 13. This helps to eliminate the problem of localized temperature concentration that easily occurs when using traditional air cooling or liquid cooling methods. Simultaneously, the combined use of these two cooling methods can significantly improve the control capability of the internal temperature of the energy storage device, enhance the cooling effect and efficiency of the energy storage battery 2, provide a good and stable working environment for the energy storage battery 2, and reduce the risk of thermal runaway and explosion of the energy storage battery 2.

[0050] Furthermore, referring to Figure 4 As shown, the first fan 31 assembly includes a first fan 31 and an air guide shroud 32. In one example, refer to... Figure 4 As shown, the air guide shroud 32 includes multiple air outlets 321, each corresponding to a first air inlet of a plurality of receiving cavities 13. This arrangement allows for the use of only one first fan 31, saving installation space, facilitating structural miniaturization, and reducing equipment costs. Alternatively, in another example, the air guide shroud 32 has only one air outlet 321, with each air guide shroud corresponding to a first air inlet. This arrangement better ensures the stability of the airflow path during cooling and reduces the risk of turbulence affecting cooling performance. It should be noted that the arrangement of the first fan 31 component in this application is not limited to the two examples described above. These two examples are merely preferred embodiments, and other different arrangements can also be used. This application does not impose specific limitations on these arrangements.

[0051] As a preferred embodiment of this application, refer to Figure 4As shown, along the air inlet direction of the first air inlet, the air outlet 321 sequentially includes a contraction section 3211, a throat 3212, and an expansion section 3213; perpendicular to the axial direction of the expansion section 3213, the maximum cross-sectional area of ​​the expansion section 3213 is not greater than the cross-sectional area of ​​the first air inlet. In the above scheme, the air outlet 321 has a Laval nozzle structure, which can accelerate the cooling airflow passing through the air outlet 321, thereby increasing the flow velocity and flow rate per unit time of the cooling gas entering the receiving cavity 13, and thus improving the air cooling effect and air cooling efficiency.

[0052] Furthermore, referring to Figure 1-4 As shown, the side wall of the receiving cavity 13 is provided with a support protrusion 133, which contacts and engages with the outer wall of the energy storage battery 2. A heat dissipation duct is formed between the energy storage battery 2, the support protrusion 133, and the inner wall of the receiving cavity 13. The first air inlet is provided corresponding to the heat dissipation duct. Preferably, referring to... Figure 1 and Figure 2 As shown, the support protrusion 133 includes a first protrusion 1331 disposed on the side wall of the receiving cavity 13 opposite to the opening and a second protrusion 1332 disposed on the top wall, bottom wall and left and right side walls of the receiving cavity 13; the first protrusion 1331 is arranged radially and the second protrusion 1332 extends from the opening to the side wall of the receiving cavity 13 opposite to the opening along the direction of the energy storage battery 2 entering and exiting the receiving cavity 13.

[0053] In the above scheme, by setting the support protrusion 133 to form a heat dissipation channel 15 between the energy storage battery 2 and the housing cavity 13, the stability of the air path when the cooling airflow flows in the heat dissipation channel 15 can be better guaranteed, and the risk of turbulence and turbulence affecting the cooling effect can be reduced.

[0054] Furthermore, referring to Figure 5 As shown, the receiving cavities 13 are arranged vertically inside the cabinet 11. (Refer to...) Figure 6As shown, the second fan 33 assembly includes a second fan 33 disposed at the bottom of the cabinet 11 and an exhaust fan 34 disposed at the top of the cabinet 11. A second air inlet 111 is disposed at the bottom of the cabinet 11, and the second fan 33 is connected to the second air inlet 111. An exhaust outlet 112 is disposed at the top of the cabinet 11, and the exhaust fan 34 is disposed at the exhaust outlet 112. Preferably, the second air inlet 111 is disposed at the bottom of the cabinet 11 near the cabinet door 12, and the exhaust outlet 112 is disposed at the top of the cabinet 11 near the cabinet door 12. This arrangement, combined with the second fan 33 and the exhaust fan 34, allows for flexible control of the exhaust rate on the cabinet door 12 side of the energy storage cabinet 1. It can increase the exhaust rate as needed to create a sufficient pressure difference on both sides of the receiving cavity 13, allowing the Laval nozzle structure of the aforementioned air guide shroud 32 to better perform its gas acceleration function, thereby improving the cooling effect and cooling efficiency. It can also adjust the gas exchange rate on the cabinet door 12 side as needed to ensure the overall balance of the ambient temperature inside the energy storage cabinet 1. It should be noted that the above example is only a preferred example of this application. The arrangement of the second air inlet 111 and the exhaust outlet 112 in this application is not limited to the above example. Other different arrangements can also be adopted. This application does not make specific limitations on this.

[0055] As a preferred embodiment of this application, refer to Figure 7 As shown, the air-cooled and liquid-cooled energy storage device in this application also includes a temperature monitoring component 4, a liquid cooling unit 5, and a control unit 6. The temperature monitoring component 4 includes a cavity temperature sensor 41 for monitoring the internal temperature of the cavity 13, an energy storage battery temperature sensor 42 for monitoring the temperature of the energy storage battery 2, and a cabinet temperature sensor 43 for monitoring the internal temperature of the cabinet 11. An installation area 14 is also provided inside the cabinet 11, and the liquid cooling unit 5 is installed in the installation area 14. The liquid cooling unit 5 is connected to the liquid cooling channel 131 and the liquid cooling pipe 132. The aforementioned air-cooled system 3 and the liquid cooling unit 5 are controlled in conjunction with each other by the control unit 6. The temperature monitoring component 4 enables real-time monitoring of the internal temperature of the containment cavity 13, the temperature of the energy storage battery 2, and the internal temperature of the cabinet 11. This facilitates real-time monitoring of the energy storage device's operation and allows for timely adjustment of the air-cooling and liquid-cooling devices based on changes in these temperature indicators. Furthermore, the temperature monitoring component 4 and the control unit 6 enable automated and intelligent temperature control of the entire energy storage device, significantly reducing the workload of manual monitoring and greatly improving the response rate compared to manual monitoring, thus facilitating timely detection and resolution of problems.

[0056] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0057] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0058] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A wind- and liquid-cooled dual-cooling energy storage device, characterized in that, include: An energy storage cabinet includes a cabinet body and a cabinet door. The energy storage cabinet has multiple receiving cavities inside, and each receiving cavity has an opening facing the cabinet door. The side wall of each receiving cavity is provided with a liquid cooling channel or the inner wall of the receiving cavity is provided with a liquid cooling pipe. The side wall of the receiving cavity opposite to the cabinet door is provided with a first air inlet, and the cabinet door is provided with an air outlet. An energy storage battery is provided, with each energy storage battery corresponding to one of the receiving cavities, and the energy storage battery enters and exits the receiving cavity through the opening; The air-cooled system includes a first fan assembly and a second fan assembly. The first fan assembly is disposed in the cabinet and connected to the first air inlet. The cabinet also has a second air inlet, and the second fan assembly is connected to the second air inlet.

2. The wind- and liquid-cooled dual-cooling energy storage device as described in claim 1, characterized in that, The first fan assembly includes a first fan and an air guide shroud. The air guide shroud includes multiple air guide outlets, and the multiple air guide outlets are configured one-to-one with the first air inlets of the multiple receiving cavities; or, the air guide shroud is configured with only one air guide outlet, and the air guide shroud is configured one-to-one with the first air inlet.

3. The wind- and liquid-cooled dual-cooling energy storage device as described in claim 2, characterized in that, Along the air intake direction of the first air inlet, the air outlet sequentially includes a contraction section, a throat, and an expansion section; perpendicular to the axial direction of the expansion section, the maximum cross-sectional area of ​​the expansion section is not greater than the cross-sectional area of ​​the first air inlet.

4. The wind- and liquid-cooled dual-cooling energy storage device as described in claim 2, characterized in that, The side wall of the receiving cavity is provided with a support protrusion, which contacts and engages with the outer wall of the energy storage battery, and a heat dissipation air duct surrounds the energy storage battery, the support protrusion and the inner wall of the receiving cavity.

5. The wind- and liquid-cooled dual-cooling energy storage device as described in claim 4, characterized in that, The supporting protrusion includes a first protrusion disposed on the side wall of the receiving cavity opposite to the opening and a second protrusion disposed on the top wall, bottom wall and left and right side walls of the receiving cavity; the first protrusion is arranged radially and the second protrusion extends from the opening to the side wall of the receiving cavity opposite to the opening along the direction in which the energy storage battery enters and exits the receiving cavity.

6. The wind- and liquid-cooled dual-cooling energy storage device as described in claim 5, characterized in that, The first air inlet is configured to correspond to the heat dissipation duct.

7. The wind- and liquid-cooled dual-cooling energy storage device as described in claim 4, characterized in that, Multiple accommodating cavities are arranged vertically inside the cabinet. The second fan assembly includes a second fan disposed at the bottom of the cabinet and an exhaust fan disposed at the top of the cabinet. The bottom of the cabinet is provided with a second air inlet, and the second fan is connected to the second air inlet. The top of the cabinet is provided with an exhaust vent, and the exhaust fan is disposed at the exhaust vent.

8. The wind- and liquid-cooled dual-cooling energy storage device as described in claim 7, characterized in that, It also includes a temperature monitoring component, which includes a cavity temperature sensor for monitoring the temperature inside the cavity, an energy storage battery temperature sensor for monitoring the temperature of the energy storage battery, and a cabinet temperature sensor for monitoring the temperature inside the cabinet.

9. The wind- and liquid-cooled dual-cooling energy storage device as described in claim 8, characterized in that, The cabinet also has an installation area, which is equipped with a liquid cooling unit. The liquid cooling unit is connected to the liquid cooling channel and the liquid cooling pipe.

10. The wind- and liquid-cooled dual-cooling energy storage device as described in claim 9, characterized in that, It also includes a control unit, which is connected to the air-cooling system and the liquid-cooling unit respectively, and the air-cooling system and the liquid-cooling unit are controlled in conjunction with each other through the control unit.

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