Intelligent self-adaptive liquid cooling energy storage flywheel and energy storage equipment

Abstract

The invention discloses an intelligent self-adaptive liquid cooling energy storage flywheel and energy storage equipment, the flywheel comprises a shell and a flywheel rotor arranged in the shell, the flywheel rotor is used for being driven by a motor rotor, the bottom of the shell is provided with a cooling liquid groove, and the flywheel rotor is provided with a cavity; the intelligent self-adaptive liquid-cooled energy storage flywheel is characterized by further comprising a drainage part and an intelligent flow adjusting assembly, by adopting the intelligent self-adaptive liquid-cooled energy storage flywheel, the flywheel has the efficient heat dissipation capacity and the intelligent temperature adjusting function and can stably operate under different working conditions, and the overall performance and reliability of energy storage equipment are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of flywheel energy storage, and in particular to an intelligent adaptive liquid-cooled energy storage flywheel and an energy storage device. BACKGROUND

[0002] In the current flywheel energy storage technology, although various heat dissipation cooling methods have been proposed and applied, there are still many problems to be solved. In the prior art, such as the in-shaft liquid cooling heat dissipation flywheel, the structural design has deficiencies in ensuring the structural strength of the flywheel rotor and the energy storage effect. The layout of the motor rotor and the cooling structure sometimes affects the structural design of the flywheel disc, thereby reducing the structural strength of the flywheel rotor and shortening the service life. At the same time, in terms of cooling circulation, the existing system is difficult to intelligently and accurately adjust according to the real-time heat generation of the flywheel. When the flywheel operates under different working conditions, the heat generated varies greatly, and the traditional cooling system cannot respond to such changes in time, resulting in that when the heat generation is less, the cooling liquid circulation flow still consumes a large amount of energy of the flywheel rotor, reducing the energy storage effect; when the heat generation is too much, it cannot provide sufficient heat dissipation capacity, affecting the stable operation of the equipment. In addition, the performance of the cooling liquid will change in the long-term use process, such as the increase of freezing point and the decrease of heat exchange effect, and the existing technology often needs to frequently replace the cooling liquid or stop for natural cooling, which seriously affects the working efficiency and economy of the energy storage flywheel. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art to some extent.

[0004] The embodiment of the present application proposes an intelligent adaptive liquid-cooled energy storage flywheel, which can intelligently adjust the cooling circulation according to the heat generation of itself, has simple structure and high reliability, and can effectively improve the structural strength, service life and energy storage effect of the flywheel rotor.

[0005] The embodiment of the present application also proposes an energy storage device comprising the flywheel.

[0006] The intelligent adaptive liquid-cooled energy storage flywheel of the embodiment of the present application comprises a shell, the bottom of the shell is provided with a cooling liquid tank, and the shell is made of high-strength and high-sealing material to maintain a vacuum environment inside; a flywheel rotor and a motor rotor are arranged in the shell. The flywheel rotor comprises a flywheel disc and a flywheel shaft connected below the flywheel disc, and the motor rotor is embedded on the outer circumferential surface of the flywheel shaft. The flywheel shaft has a cavity extending along the length direction thereof, the circumferential surface of the cavity is provided with internal threads extending along the length direction thereof, the lower end of the cavity is opposite to the cooling liquid tank and extends into the cooling liquid tank, and the lower end of the cavity is provided with an opening communicating with the cooling liquid tank; a flow guide member extends along the length direction of the cavity and is arranged in the cavity, and the lower end of the flow guide member extends out of the cavity and is connected with the shell. The upper end of the flow guide member is spaced apart from the bottom wall of the cavity, the outer circumferential surface of the flow guide member is spaced apart from the circumferential surface of the cavity to form an external liquid flow cavity, the inside of the flow guide member has an internal liquid flow cavity extending along the length direction thereof, the upper end of the internal liquid flow cavity communicates with the upper end of the external liquid flow cavity, and the circumferential wall of the flow guide member is provided with a through hole communicating the internal liquid flow cavity and the cooling liquid tank, the through hole is adjacent to the lower end of the flow guide member; an intelligent flow adjusting assembly is arranged at the communication between the external liquid flow cavity and the internal liquid flow cavity, and comprises a flow adjusting valve and a temperature sensor. The temperature sensor is used for monitoring the temperature of the cooling liquid in real time, and the flow adjusting valve automatically adjusts the flow of the cooling liquid between the external liquid flow cavity and the internal liquid flow cavity according to the detection result of the temperature sensor. When the temperature sensor detects that the temperature of the cooling liquid increases, the flow adjusting valve automatically increases the opening degree to make more cooling liquid participate in circulation heat dissipation; when the temperature decreases, the flow adjusting valve reduces the opening degree to reduce the flow of the cooling liquid and reduce the energy loss; a cooling liquid regeneration module is installed in the cooling liquid tank and comprises a filtering unit and a freezing point adjusting unit. The filtering unit is used for filtering impurities in the cooling liquid to maintain the cleanliness of the cooling liquid and prevent the impurities from accumulating in the liquid flow cavity to affect the heat dissipation effect. The freezing point adjusting unit adjusts the freezing point of the cooling liquid in real time by adding specific chemicals to ensure that the cooling liquid can maintain good fluidity and heat exchange performance under different working conditions and avoid the problem of rising freezing point and reduced heat exchange effect due to long-term use.

[0007] The intelligent adaptive liquid cooling energy storage flywheel of the embodiment of the present application realizes intelligent control of cooling circulation and continuous optimization of cooling liquid performance by increasing an intelligent flow adjusting assembly and a cooling liquid regeneration module on the basis of a traditional liquid cooling structure. The cavity of the flywheel shaft, the internal thread and the flow guide cooperate to form a basic liquid cooling circulation flow path, and the cooling liquid circulation is realized by using the self-suction generated by the flywheel rotor rotation, without the need of an additional power pump, and the structure is simple. The intelligent flow adjusting assembly can adjust the flow in real time according to the cooling liquid temperature, while reducing energy consumption while ensuring the heat dissipation effect. The cooling liquid regeneration module can maintain the stability of the performance of the cooling liquid, without the need of frequent replacement of the cooling liquid or shutdown cooling, thereby improving the working efficiency and reliability of the energy storage flywheel. At the same time, the motor rotor and the cavity are arranged on the same side of the flywheel disc, thereby reducing the influence on the structural design of the flywheel disc and ensuring the structural strength of the flywheel rotor and the energy storage effect.

[0008] In some embodiments, the intelligent adaptive liquid cooling energy storage flywheel further comprises a liquid supply assembly located outside the shell and connected with the shell. The liquid supply assembly comprises an outer shell and a lifting platform, the lifting platform is arranged in the outer shell, and the upper end surface of the lifting platform and the inner top surface and the inner circumferential surface of the outer shell can surround a liquid storage cavity, and the liquid storage cavity has a liquid discharge port. The cooling liquid tank has a liquid injection hole in communication with the outside, and the liquid injection hole is located below the flywheel shaft, and the liquid injection hole is in communication with the liquid discharge port. The lifting platform can move between a liquid injection position and a liquid return position in the up-down direction, when the liquid injection position, the liquid level in the liquid storage cavity is higher than the lower end of the flywheel shaft, and when the liquid return position, the liquid level in the liquid storage cavity is lower than the lower end of the flywheel shaft. Through the liquid supply assembly, the supply of cooling liquid can be flexibly controlled, the start and stop of the cooling circulation are further optimized, and unnecessary energy consumption is reduced.

[0009] In some embodiments, the intelligent adaptive liquid cooling energy storage flywheel further comprises a central controller electrically connected with the temperature sensor, the flow regulating valve, the cooling liquid regeneration module and the lifting platform. The central controller receives the detection signal of the temperature sensor, controls the opening degree of the flow regulating valve, the working state of the cooling liquid regeneration module and the position of the lifting platform according to the preset temperature threshold and algorithm. For example, when the temperature continues to rise and the flow regulating valve is fully open, the central controller controls the lifting platform to rise to the liquid injection position to increase the supply of cooling liquid and enhance heat dissipation; when the temperature decreases to a certain extent, the lifting platform is controlled to return to the liquid return position to reduce the cooling liquid circulation. In this way, the intelligent collaborative work of the entire cooling system is realized, and the overall performance of the energy storage flywheel is improved.

[0010] In some embodiments, the housing includes a first housing and a second housing, the second housing being opposite to the lower end of the cavity and sealingly connected to the first housing, the second housing having a coolant reservoir, and the lower end of the drain element being connected to the second housing. This split design facilitates assembly and maintenance; when the coolant reservoir needs cleaning or a component malfunctions, the second housing can be easily disassembled for operation.

[0011] In some embodiments, the second housing is integrally formed with the drain element, and both the second housing and the drain element are made of thermally conductive material. A heat sink is provided on the outer surface of the second housing. This design enhances the heat dissipation effect of the coolant, transferring the heat absorbed by the coolant to the external environment more quickly.

[0012] In some embodiments, the intelligent adaptive liquid-cooled energy storage flywheel further includes a heat pipe, which passes through the drain element and is spaced apart from the inner circumferential surface of the drain element, with its lower end passing through the second housing and extending to the outside. The heat pipe further improves the heat dissipation efficiency of the coolant, utilizing its high thermal conductivity to quickly remove heat.

[0013] In some embodiments, the bottom wall of the cavity has a tapered guide protrusion extending toward the internal liquid flow cavity. The cross-sectional area of ​​the tapered guide protrusion gradually decreases in the direction away from the bottom wall of the cavity, and the tip of the tapered guide protrusion is opposite to the upper end of the heat pipe. The tapered guide protrusion guides the coolant to flow toward the heat pipe, ensuring full contact between the coolant and the heat pipe and improving the heat dissipation effect.

[0014] In some embodiments, the cone tip of the conical guide protrusion is provided with a rotating impeller. The rotating impeller rotates along with the coolant flow, which can further agitate the coolant and enhance the heat exchange efficiency between the coolant and the heat pipe.

[0015] In some embodiments, the first housing has an opening at a position opposite to the lower end of the flywheel shaft. The second housing includes a base plate and a side plate. The side plate is connected to the side of the base plate facing the cavity and is arranged around the outer periphery of the base plate. The base plate and the side plate form the coolant tank. The outer peripheral surface of the side plate is provided with an annular connecting plate extending circumferentially thereafter. The side plate fits within the opening and partially protrudes outward from the opening. The annular connecting plate is fitted and sealed to the outer surface of the first housing, and the outer peripheral surface of the side plate is fitted and sealed to the inner wall of the opening. This connection method ensures the airtightness of the housing and allows for flexible adjustment of the coolant tank capacity as needed.

[0016] In some embodiments, the flywheel rotor includes a first rotor segment and a second rotor segment, the first rotor segment being connected to the lower end of the second rotor segment, the first rotor segment being located within the coolant tank and having a smaller cross-sectional area than the second rotor segment, and the side plate being spaced apart from the second rotor segment. This structural design prevents coolant from splashing out during shaking, improving the stability of equipment operation.

[0017] The energy storage device in this embodiment of the invention includes the intelligent adaptive liquid-cooled energy storage flywheel described in the above embodiments.

[0018] The energy storage device of this invention, by adopting the above-mentioned intelligent adaptive liquid-cooled energy storage flywheel, has efficient heat dissipation capacity and intelligent temperature regulation function, and can operate stably under different operating conditions, thereby improving the overall performance and reliability of the energy storage device. Attached Figure Description

[0019] Figure 1 is a schematic diagram of the overall structure of the intelligent adaptive liquid-cooled energy storage flywheel according to an embodiment of the present invention.

[0020] Figure 2 is a partial structural schematic diagram of an intelligent adaptive liquid-cooled energy storage flywheel according to an embodiment of the present invention.

[0021] Figure 3 is a schematic diagram of the coolant regeneration module of the intelligent adaptive liquid-cooled energy storage flywheel according to an embodiment of the present invention.

[0022] Figure 4 is a schematic diagram of the liquid supply assembly of an intelligent adaptive liquid-cooled energy storage flywheel according to an embodiment of the present invention.

[0023] Figure label: 1. First housing; 2. Flywheel rotor; 21. First rotor segment; 22. Second rotor segment; 23. Guide protrusion; 24. Flywheel disc; 25. Flywheel shaft; 251. Cavity; 252. Through hole; 7. Heat pipe; 8. Drainage component; 81. Internal liquid flow chamber; 82. External liquid flow chamber; 9. Heat sink; 10. Second housing; 11. Base plate; 12. Side plate; 13. Annular connecting plate; 14. Coolant tank; 15. Liquid supply assembly; 151. Outer shell; 153. Liquid storage chamber; 154. Drain port; 16. Injection hole; 17. Intelligent flow regulation assembly; 171. Temperature sensor; 172. Flow regulation valve; 18. Coolant regeneration module; 181. Filter unit; 182. Freezing point regulation unit; 19. Central controller. Detailed Implementation

[0024] like Figures 1-4 As shown, the intelligent adaptive liquid-cooled energy storage flywheel of this embodiment of the invention includes a first housing 1, a flywheel rotor 2, a motor rotor, a flow guide 8, an intelligent flow regulation component 17, a coolant regeneration module 18, and a liquid supply component 15, etc.

[0025] Specifically, the intelligent adaptive liquid-cooled energy storage flywheel comprises a shell, a flywheel rotor 2 and a motor rotor arranged in the shell, the flywheel rotor 2 is driven by the motor rotor, the bottom of the shell is provided with a cooling liquid tank 14, and the flywheel rotor 2 is provided with a cavity 251; characterized in that it further comprises: The flow guide member 8 extends along the length direction of the cavity 251 and is arranged in the cavity 251, the lower end of the flow guide member 8 extends out of the cavity 251 and is connected with the shell, the upper end of the flow guide member 8 is spaced apart from the bottom wall of the cavity 251, the outer circumferential surface of the flow guide member 8 is spaced apart from the circumferential surface of the cavity 251 to form an external liquid flow cavity 82, the flow guide member 8 has an internal liquid flow cavity 81 extending along the length direction thereof, and the upper end of the internal liquid flow cavity 81 communicates with the external liquid flow cavity 82; the circumferential wall of the flow guide member 8 is provided with a through hole 252 for communicating the internal liquid flow cavity 81 with the cooling liquid tank 14, and the through hole 252 is adjacent to the lower end of the flow guide member 8. The intelligent flow adjusting assembly 17 is arranged at the communication position of the external liquid flow cavity 82 and the internal liquid flow cavity 81 and is used for adjusting the flow of the cooling liquid between the external liquid flow cavity 82 and the internal liquid flow cavity 81.

[0026] Specifically, the cooling liquid can circulate between the cooling liquid tank 14, the internal liquid flow cavity 81 and the external liquid flow cavity 82, so that the flywheel rotor 2 is comprehensively and effectively cooled, the heat dissipation efficiency of the flywheel rotor 2 is improved, the stable operation of the flywheel rotor 2 at an appropriate temperature is ensured, and the service life of the flywheel rotor 2 is prolonged; meanwhile, the flow of the cooling liquid is intelligently and accurately controlled according to the actual operation condition and temperature of the flywheel rotor 2, so that the heat dissipation demand of the flywheel rotor 2 under different conditions is adapted, energy waste caused by excessive cooling liquid flow or insufficient heat dissipation caused by small cooling liquid flow is avoided, and the operation stability and energy saving performance of the energy storage equipment are further improved.

[0027] Specifically, the flywheel rotor 2 comprises a flywheel disc 24 and a flywheel shaft 25, the flywheel shaft 25 is connected below the flywheel disc 24, and the motor rotor is embedded on the outer circumferential surface of the flywheel shaft 25.

[0028] Specifically, the flywheel rotor 2 further comprises a first rotor section 21 and a second rotor section 22, the first rotor section 21 is connected to the lower end of the second rotor section 22, the first rotor section 21 is located in the cooling liquid tank 14, the cross-sectional area of the first rotor section 21 is smaller than that of the second rotor section 22, and the side plate 12 is spaced apart from the second rotor section 22. Such a structure design can prevent the cooling liquid from splashing out when it is shaken, and improve the stability of the equipment operation.

[0029] Specifically, the lower end of the cavity 251 is opposite to the cooling liquid tank and extends into the cooling liquid tank 14, and the lower end of the cavity 251 has an opening communicating with the cooling liquid tank 14.

[0030] Specifically, the intelligent flow regulation component 17 includes a temperature sensor 171 and a flow regulation valve 172. The temperature sensor 171 is used to monitor the coolant temperature in real time. The flow regulation valve 172 adjusts the flow rate of the coolant between the external liquid flow chamber 82 and the internal liquid flow chamber 81 based on the detection result of the temperature sensor 171. By acquiring coolant temperature information in real time through the temperature sensor 171, the flow regulation valve 172 accurately adjusts the flow rate of the coolant between the two liquid flow chambers based on this information, thereby achieving dynamic control of the coolant flow rate. It can adjust the coolant flow rate in a timely manner according to the actual heat dissipation requirements of the flywheel rotor 2, avoiding excessively high or low temperatures of the flywheel rotor 2 due to unsuitable flow, effectively ensuring stable operation of the flywheel rotor 2 at a suitable temperature, and improving the reliability and service life of the energy storage device.

[0031] Specifically, temperature sensor 171 monitors the temperature of the coolant in real time and transmits the temperature signal to central controller 19. Central controller 19 determines whether the flow rate needs to be adjusted based on a preset temperature threshold. If the temperature is higher than the threshold, it controls the flow regulating valve 172 to increase the opening, allowing more coolant to flow from the external fluid flow chamber 82 into the internal fluid flow chamber 81 to enhance heat dissipation; conversely, it decreases the opening.

[0032] Specifically, the energy storage flywheel also includes a coolant regeneration module 18, which is located within the coolant tank 14. The coolant regeneration module 18 includes a filter unit 181 and a freezing point adjustment unit 182. The filter unit 181 filters impurities from the coolant, and the freezing point adjustment unit 182 adjusts the freezing point of the coolant. The filter unit 181 removes impurities from the coolant, preventing them from affecting the cooling effect and clogging pipes. The freezing point adjustment unit 182 adjusts the freezing point of the coolant according to changes in ambient temperature, ensuring that the coolant does not freeze in low-temperature environments. This ensures the stability of the coolant's quality and performance, enabling the cooling system to operate normally under different environmental conditions, improving the environmental adaptability of the energy storage device, and reducing equipment failures caused by coolant problems.

[0033] Specifically, the filter unit 181 continuously filters impurities from the coolant to keep it clean. The freezing point adjustment unit 182 automatically adds chemical substances to adjust the freezing point of the coolant based on usage and temperature changes, ensuring stable coolant performance.

[0034] Specifically, the energy storage flywheel further comprises a liquid supply assembly 15, which is arranged outside the housing and connected with the housing; the liquid supply assembly 15 comprises an outer shell 151 and a lifting platform arranged in the outer shell 151, the upper end surface of the lifting platform and the inner top surface and inner circumferential surface of the outer shell 151 form a liquid storage cavity 153, and the liquid storage cavity 153 has a liquid discharge port 154; the cooling liquid tank 14 has a liquid injection hole in communication with the outside, the liquid injection hole is located below the flywheel shaft 25 and in communication with the liquid discharge port 154; the lifting platform moves between the liquid injection position and the liquid recovery position in the up-down direction, and by moving the lifting platform between the liquid injection position and the liquid recovery position, the communication state between the liquid storage cavity 153 and the cooling liquid tank 14 is controlled, and automatic injection and recovery of the cooling liquid are realized. The cooling liquid tank 14 is conveniently and quickly replenished with cooling liquid, ensuring that the cooling system has sufficient cooling liquid for heat dissipation, while avoiding waste of cooling liquid and improving the automation level and operation efficiency of the equipment.

[0035] Specifically, the housing is provided with a liquid injection hole 16.

[0036] Specifically, the lifting platform is movable up and down in the outer shell 151. When the central controller 19 determines that the supply of cooling liquid needs to be increased according to temperature signals and the like, the lifting platform is controlled to rise to the liquid injection position, and the cooling liquid in the liquid storage cavity 153 flows into the cooling liquid tank 14 through the liquid discharge port 154 and the liquid injection hole 16, so that the liquid level in the cooling liquid tank 14 is higher than the lower end of the flywheel shaft 25, and the flywheel rotor 2 can extract the cooling liquid for circulation heat dissipation; when the temperature decreases and a large amount of cooling liquid is not needed for circulation, the lifting platform is lowered to the liquid recovery position, the liquid level in the cooling liquid tank 14 is lowered, the flywheel rotor 2 cannot extract the cooling liquid, the cooling circulation is weakened or stopped, and energy loss is reduced.

[0037] Specifically, in the liquid injection position, the liquid level in the liquid storage cavity 153 is higher than the lower end of the flywheel shaft 25, and in the liquid recovery position, the liquid level in the liquid storage cavity 153 is lower than the lower end of the flywheel shaft 25. The supply of cooling liquid can be flexibly controlled by the liquid supply assembly 15, further optimizing the start and stop of the cooling circulation, and reducing unnecessary energy consumption.

[0038] Specifically, the energy storage flywheel further comprises a central controller 19 electrically connected with the temperature sensor 171, the flow regulating valve 172, the cooling liquid regeneration module 18 and the lifting platform; the central controller 19 receives the detection signal of the temperature sensor 171 and controls the opening degree of the flow regulating valve 172, the working state of the cooling liquid regeneration module 18 and the position of the lifting platform according to the preset temperature threshold value; the central controller 19 serves as the control core of the entire cooling system, collects the signal of the temperature sensor 171 and uniformly coordinates the control of the flow regulating valve 172, the cooling liquid regeneration module 18 and the lifting platform according to the preset program, realizes the intelligent management of the cooling system, makes each component work cooperatively, automatically adjusts the cooling parameters according to the actual temperature of the flywheel rotor 2, improves the accuracy and efficiency of the cooling system and reduces the cost of manual intervention.

[0039] Specifically, when the temperature continues to rise and the flow regulating valve 172 has been fully opened, the central controller 19 controls the lifting platform to rise to the liquid injection position, increases the supply of cooling liquid and enhances heat dissipation; when the temperature decreases to a certain extent, the lifting platform is controlled to return to the liquid return position to reduce the circulation of cooling liquid. In this way, the intelligent cooperative work of the entire cooling system is realized and the overall performance of the energy storage flywheel is improved.

[0040] Specifically, the shell comprises a first shell 1 and a second shell 10, the second shell 10 is opposite to the lower end of the cavity 251 and is sealingly connected with the first shell 1; the second shell 10 comprises a bottom plate 11 and a side plate 12 connected to the side of the bottom plate 11 facing the cavity 251, the side plate 12 is annularly arranged outside the periphery of the bottom plate 11, and the bottom plate 11 and the side plate 12 enclose the cooling liquid tank 14; the shell is designed as a split structure, the second shell 10 is specially used to form the cooling liquid tank 14 and is sealingly connected with the first shell 1, thereby providing an independent storage space for the cooling liquid, facilitating the processing and installation of the cooling liquid tank 14, ensuring the sealing of the cooling liquid and preventing the leakage of the cooling liquid, and improving the reliability and safety of the cooling system.

[0041] Specifically, the outer periphery of the side plate 12 is provided with an annular connecting plate 13 extending in the circumferential direction thereof, the side plate 12 is fitted in the opening and partially protrudes outward from the opening, the annular connecting plate 13 is attached to and sealingly connected with the outer side of the shell, and the outer periphery of the side plate 12 is attached to and sealingly connected with the inner wall of the opening. This connection mode ensures the sealing of the shell and can flexibly adjust the capacity of the cooling liquid tank 14 as needed.

[0042] Specifically, the lower end of the flow guide 8 is connected with the second shell 10.

[0043] Specifically, the second shell 10 is integrally formed with the flow guide 8, and the second shell 10 and the flow guide 8 are made of heat-conducting materials; the outer side of the second shell 10 is provided with a cooling fin 9, and the second shell 10 is integrally formed with the flow guide 8, which can reduce the number of components and assembly processes, and improve the structural strength; the use of heat-conducting materials can quickly transfer heat to the cooling liquid; the cooling fin 9 can increase the heat dissipation area, accelerate the dissipation of heat to the surrounding environment, enhance the heat dissipation capacity of the cooling system, and make the heat generated by the flywheel rotor 2 dissipate more quickly and effectively, further reduce the temperature of the flywheel rotor 2, and improve the performance and stability of the energy storage device.

[0044] Specifically, the energy storage flywheel further comprises a heat pipe 7, which is arranged in the flow guide 8 and spaced apart from the inner circumferential surface of the flow guide 8, and the lower end of the heat pipe 7 penetrates through the second shell 10 and extends to the outside; the heat pipe 7 utilizes its high-efficiency heat conduction performance to quickly transfer the heat generated by the flywheel rotor 2 from the inside to the outside, and cooperates with the cooling liquid in the flow guide 8 to dissipate heat, thereby improving the heat dissipation efficiency, especially for the parts where the heat is concentrated inside the flywheel rotor 2, the heat can be timely conducted out to avoid local overheating, ensure the temperature uniformity of the flywheel rotor 2, and prolong its service life.

[0045] Specifically, the bottom wall of the cavity 251 has a tapered flow guide protrusion 23 extending towards the internal liquid flow cavity 81, the cross-sectional area of the tapered flow guide protrusion 23 gradually decreases in the direction away from the bottom wall of the cavity 251, and the tapered tip of the tapered flow guide protrusion 23 is opposite to the upper end of the heat pipe 7; the tapered flow guide protrusion 23 can guide the cooling liquid to the upper end of the heat pipe 7, so that the cooling liquid can better contact the heat pipe 7, enhance the heat exchange effect, optimize the flow path of the cooling liquid in the cavity 251, improve the cooling efficiency of the cooling liquid on the heat pipe 7, further improve the performance of the entire cooling system, and ensure the flywheel rotor 2 to operate in an efficient cooling environment.

[0046] Specifically, the tapered flow guide protrusion 23 guides the cooling liquid to flow to the heat pipe 7, so that the cooling liquid can fully contact the heat pipe 7, and the heat dissipation effect is improved.

[0047] Specifically, the tapered flow guide protrusion 23 is provided with a rotating impeller. The rotating impeller rotates with the flow of the cooling liquid, which can further disturb the cooling liquid and enhance the heat exchange efficiency between the cooling liquid and the heat pipe 7.

[0048] Specifically, an intelligent self-adaptive liquid-cooled energy storage device comprises an energy storage flywheel, and the energy storage flywheel with the above-mentioned various advanced cooling technologies is applied to the energy storage device to provide stable and reliable energy storage and release functions for the energy storage device, improve the overall performance and reliability of the energy storage device, enable the energy storage device to operate stably under a wider range of working conditions, reduce the equipment failure rate, improve the energy utilization efficiency, and meet the energy storage needs in different scenarios.

[0049] The intelligent adaptive liquid cooling energy storage flywheel of the embodiment of the present application realizes intelligent control of the cooling cycle and optimization of the cooling liquid performance through the cooperative work of each component, and improves the structural strength, service life and energy storage effect of the energy storage flywheel.

[0050] The energy storage device of the embodiment of the present application comprises the intelligent adaptive liquid cooling energy storage flywheel of the above embodiment. By adopting the intelligent adaptive liquid cooling energy storage flywheel, the energy storage device can stably operate under different working conditions, has good heat dissipation effect and high reliability, and has good application prospect.

[0051] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0052] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0053] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected or can communicate with each other; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0054] In the present application, unless specifically stated and limited otherwise, a first feature "on" or "under" a second feature can be directly in contact with the second feature, or indirectly in contact with the second feature through an intermediate medium. Also, a first feature "over", "above" and "on top of" a second feature can be directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. A first feature "under", "below" and "underneath" a second feature can be directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0055] In the present application, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material, or characteristic being described is included in at least one embodiment or example of the present application. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Moreover, the terms "first", "second", "third", etc. are used herein merely as identifiers for different elements, regions, layers, or sections, and are not intended to denote a spatial or chronological priority or order except if explicitly so defined. Also, the terms "comprises", "comprising", "includes", "including", or the like are used herein to generally mean comprising, including, or consisting of, unless otherwise indicated.

[0056] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary, and are not to be interpreted as limiting the present application, and that those ordinarily skilled in the art can make changes, modifications, substitutions and variations to the above-described embodiments within the scope of the present application.

Claims

1. An intelligent adaptive liquid-cooled energy storage flywheel, comprising a casing, a flywheel rotor (2) and a motor rotor arranged in the casing, the flywheel rotor (2) being configured to be driven by the motor rotor, a bottom of the casing being provided with a cooling liquid tank (14), and the flywheel rotor (2) being provided with a cavity (251); characterized in that, Also comprising: a flow guide (8) arranged in the cavity (251), the lower end of the flow guide (8) being connected to the shell; the outer circumferential surface of the flow guide (8) being spaced apart from the circumferential surface of the cavity (251) to form an external liquid flow cavity (82), the flow guide (8) having an internal liquid flow cavity (81) inside, the internal liquid flow cavity (81) being in communication with the external liquid flow cavity (82); the circumferential wall of the flow guide (8) being provided with a through hole (252) for communicating the internal liquid flow cavity (81) with the cooling liquid tank (14); an intelligent flow regulating assembly (17) arranged at the communication position of the external liquid flow cavity (82) and the internal liquid flow cavity (81) for regulating the flow of the cooling liquid between the external liquid flow cavity (82) and the internal liquid flow cavity (81).

2. The intelligent adaptive liquid-cooled energy storage flywheel of claim 1, wherein: The intelligent flow regulating assembly (17) comprises a temperature sensor (171) and a flow regulating valve (172); the temperature sensor (171) is used for real-time monitoring of the temperature of the cooling liquid, and the flow regulating valve (172) adjusts the flow of the cooling liquid between the external liquid flow cavity (82) and the internal liquid flow cavity (81) according to the detection result of the temperature sensor (171).

3. The intelligent adaptive liquid-cooled energy storage flywheel of claim 1 or 2, wherein: The energy storage flywheel further comprises a cooling liquid regeneration module (18) arranged in the cooling liquid tank (14), the cooling liquid regeneration module (18) comprising a filtering unit (181) for filtering impurities in the cooling liquid and a freezing point adjusting unit (182) for adjusting the freezing point of the cooling liquid.

4. The intelligent adaptive liquid-cooled energy storage flywheel of claim 3, wherein: The energy storage flywheel further comprises a liquid supply assembly (15) arranged outside the shell and connected to the shell; the liquid supply assembly (15) comprises an outer shell (151) and a lifting platform arranged in the outer shell (151), the upper end surface of the lifting platform and the inner top surface and the inner circumferential surface of the outer shell (151) surrounding a liquid storage cavity (153), the liquid storage cavity (153) having a liquid discharge port (154); the cooling liquid tank (14) has a liquid injection hole in communication with the outside, the liquid injection hole being located below the flywheel shaft (25) and in communication with the liquid discharge port (154); the lifting platform is used for moving between the liquid injection position and the liquid return position in the up-down direction.

5. The intelligent adaptive liquid-cooled energy storage flywheel of claim 4, wherein: The energy storage flywheel further comprises a central controller (19) electrically connected to the temperature sensor (171), the flow regulating valve (172), the cooling liquid regeneration module (18) and the lifting platform; the central controller (19) receives the detection signal of the temperature sensor (171) and controls the opening degree of the flow regulating valve (172), the working state of the cooling liquid regeneration module (18) and the position of the lifting platform according to the preset temperature threshold.

6. The intelligent self-adaptive liquid-cooled energy storage flywheel according to claim 1 or 2, characterized in that: The shell comprises a first shell (1) and a second shell (10), the second shell (10) being opposite to the lower end of the cavity (251) and being sealingly connected to the first shell (1); the second shell (10) comprises a bottom plate (11) and a side plate (12) connected to the bottom plate (11) on the side facing the cavity (251), the side plate (12) being annularly arranged on the outer circumference of the bottom plate (11), and the bottom plate (11) and the side plate (12) surrounding the cooling liquid tank (14).

7. The intelligent adaptive liquid-cooled energy storage flywheel of claim 6, wherein: The second shell (10) is integrally formed with the flow guide (8), and the second shell (10) and the flow guide (8) are made of heat-conducting material; the outer side of the second shell (10) is provided with a heat dissipation fin (9).

8. The intelligent adaptive liquid-cooled energy storage flywheel of claim 6, wherein: The energy storage flywheel further comprises a heat pipe (7) which is arranged in the flow guide (8) and is spaced apart from the inner circumferential surface of the flow guide (8), and the lower end of the heat pipe (7) penetrates through the second shell (10) and extends to the outside.

9. The intelligent adaptive liquid-cooled energy storage flywheel of claim 8, wherein: The bottom wall of the cavity (251) has a tapered flow guide protrusion (23) extending towards the internal liquid flow cavity (81), the cross-sectional area of the tapered flow guide protrusion (23) gradually decreases in the direction away from the bottom wall of the cavity (251), and the tapered tip of the tapered flow guide protrusion (23) is opposite to the upper end of the heat pipe (7).

10. An intelligent adaptive liquid-cooled energy storage device, characterized by: The energy storage flywheel comprises the energy storage flywheel according to any one of claims 1-9.

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