Energy-saving electric power storage pile foundation system and mounting method thereof

Abstract

The invention discloses an energy-saving electric power storage pile foundation system and an installation method thereof. The system comprises an electric power storage pipe pile, an electrolyte conveying unit, an electric pile, a heat transfer medium conveying unit and a heat exchange unit, the electric power storage pipe pile is a civil engineering bearing pile, an inner cavity of the electric power storage pipe pile is filled with electrolyte, and the electrolyte conveying unit comprises an electrolyte conveying pipeline and an electrolyte circulating pump; the heat transfer medium conveying unit comprises a heat transfer medium conveying pipeline and a heat transfer medium circulating pump. Compared with the prior art, the energy storage system which is economical, applicable, safe and reliable and the pile foundation system of the building are perfectly fused together through the technology, the space limitation problem of the energy storage system in the building is solved, and space utilization is more intensive. And the electrolyte buried in the underground pile foundation is creatively used as a cold / heat source, and heat exchange with the user side is carried out through the heat exchange unit, so that cold supply and heat supply of the user side can be served, and energy consumption of system heat management can be indirectly reduced.

Description

Technical Field

[0001] The present invention relates to the field of integration of building and energy, as well as the field of energy storage, and particularly relates to an energy-saving electricity storage pile foundation system and an installation method thereof. Background Art

[0002] Under the "dual carbon" policy, the construction industry needs to significantly reduce carbon emissions. Building energy storage, as an effective energy management means, can help buildings achieve higher energy efficiency, thereby reducing carbon emissions. Building energy storage, especially the energy storage system in the building environment, is designed to improve energy efficiency, ensure the stability of power supply, and support the integration of renewable energy. However, this system faces various challenges and problems in implementation and operation, including:

[0003] ① In terms of technology and economy. The contradiction between high-efficiency, multi-cycle and long-life energy storage systems and investment and operation costs. For example: Lead-acid batteries have the advantages of low cost and mature technology, but their cycle life is short and they are sensitive to deep discharge; Sodium-sulfur batteries work at high temperatures, have high energy density and long life. However, they require special equipment and control systems to maintain the working temperature, resulting in increased operation costs.

[0004] ② In terms of safety and environment. Such as lithium-ion batteries, although they have high energy density, long cycle life and relatively high efficiency. However, their cost is relatively high, and there are safety problems, such as overheating or fire risks.

[0005] ③ Space and design issues. On the one hand, in the building environment, there may not be enough space to install large-scale energy storage systems. On the other hand, how to seamlessly integrate the energy storage system with other systems and design elements of the building is a challenge.

[0006] Therefore, the present invention uses an efficient, multi-cycle, long-life and safe electrolyte as the main energy storage medium, places it in a large-diameter, non-displacement and high-bearing-capacity pipe pile, and uses a circulating pump system to make the electrolyte circulate between the pipe pile and the stack to achieve the purpose of charging and discharging. In this way, an energy storage system that is technically feasible, economically applicable and safe and reliable can be perfectly integrated with the building's pile foundation system, innovatively solving the space limitation problem of this energy storage system in the building. Summary of the Invention

[0007] The purpose of this application is to provide an electricity storage pile foundation system and an installation method thereof, which solve the space limitation problem of the energy storage system in the building.

[0008] This application discloses an energy-saving electricity storage pile foundation system, including: an electricity storage pipe pile, an electrolyte delivery unit, a stack, a heat exchange unit and a heat transfer medium delivery unit; wherein:

[0009] The energy storage pipe pile is a building load-bearing pile, including a positive energy storage pipe pile and a negative energy storage pipe pile, and the positive energy storage pipe pile and the negative energy storage pipe pile are respectively connected to the positive electrode and the negative electrode of the stack;

[0010] The electrolyte delivery unit includes an electrolytic heat delivery pipeline and an electrolyte circulation pump, and the electrolyte delivery pipeline is connected to the inside of the energy storage pipe pile;

[0011] The heat transfer medium delivery unit includes a heat transfer medium delivery pipeline and a heat transfer medium circulation pump. The heat transfer medium delivery pipeline is buried in the energy storage pipe pile, and both ends thereof converge on both sides of the heat exchange unit and exchange heat with the user side in the heat exchange unit.

[0012] In a preferred example, the heat transfer medium delivery unit further includes a heat transfer medium circulation pump, and the electrolyte delivery unit further includes an electrolyte circulation pump.

[0013] In a preferred example, the heat exchange unit is further equipped with a valve system and is connected to the energy storage pipe pile through the valve system.

[0014] In a preferred example, the stack is externally connected to the electrical energy on the power supply side and the load on the user side through an inverter, and is connected to the cavity in the energy storage pipe pile through the electrolyte delivery unit and is configured to charge / discharge through the electrolyte.

[0015] In a preferred example, the energy storage pipe pile is composed of a pile shoe, a pile body, a bottom seal body and a top cover plate.

[0016] In a preferred example, the diameter of the energy storage pipe pile is 500 - 2000 mm and the bearing capacity is greater than 1000 tons.

[0017] In a preferred example, grouting conduits are pre-embedded in the inner wall of the energy storage pipe pile, a slurry outlet is provided at the bottom, a grouting port is provided on the side wall, and the grouting conduits are connected by end joints.

[0018] In a preferred example, the top cover plate is made of anti-corrosion material and is provided with holes through which the electrolyte delivery pipeline and the heat transfer medium delivery pipeline can pass.

[0019] In a preferred example, the energy-saving energy storage pile foundation system further includes: an integrated control unit, and the integrated control unit includes: a software system, sensors, a controller and instruments. The integrated control unit is configured to control the stack to charge / discharge on the one hand and control the heat exchange between the energy storage pipe pile and the user side through the heat exchange unit on the other hand.

[0020] In a preferred example, the heat exchange unit includes a compressor, an evaporator, a condenser, an expansion valve and a pipeline system.

[0021] In a preferred example, the heat transfer medium conveying pipeline can also be buried in the pipe wall or directly arranged outside the pile.

[0022] In a preferred example, the valve system includes any one of the following: four-way valve, electronic expansion valve, reversible cycle system.

[0023] In a preferred example, the control unit is configured to be able to directly manage the heat exchange units and their systems on the one hand, that is, even without considering electricity storage, it can still mobilize the heat exchange system to achieve energy conservation in the building, and on the other hand, it can recover the heat generated during the operation of the electrolyte conveying unit.

[0024] In a preferred example, the heat transfer medium conveying pipeline is arranged in a spiral structure inside the electricity storage pipe pile and is connected and fixed through a special joint.

[0025] In a preferred example, a heat exchange device is arranged on the electrolyte conveying pipeline.

[0026] In a preferred example, the stack can enable the positive electrolyte and the negative electrolyte to react inside it, and the reactions include:

[0027]

[0028] In a preferred example, the electricity storage pipe pile is made of a high-performance cementitious material, and the high-performance cementitious material is made mainly of solid waste materials. The steps include: first, treating industrial materials containing active silicon and aluminum through one or several of the methods of alkali activation method, thermal activation method, mechanical activation method, microbial activation method, electrochemical activation method, and hydrothermal treatment method to prepare a high-performance cementitious material, and then configuring a high-performance concrete based on this cementitious material.

[0029] In a preferred example, the electricity storage pipe pile is provided with a grouting port and a grouting pipeline. The grouting pipeline of the grouting port is arranged on the side wall of the electricity storage pipe pile. When driving the pile, a heat conduction-enhanced grouting body is injected through the grouting pipeline, so that after cooling, a heat conduction-enhanced structure is formed, and the electricity storage pipe pile and the soil are combined more firmly.

[0030] In a preferred example, the heat conduction-enhanced grouting body is selected from any one of the following or a combination thereof: cement-based phase change material grouting body, mineral-based grouting body, and microbial phase change capsule grouting body.

[0031] In a preferred example, the method includes the following steps:

[0032] S1. Drilling and pile sinking: After the expandable and retractable drill bit is connected to the long spiral drill rod, it enters the stratum to be piled through the inner cavity of the large-diameter pipe pile; the drill rod is driven to drill holes, and the drill bit expands under the action of soil pressure, causing the diameter of the drilled hole to be larger than the outer diameter of the pipe pile, ensuring that the pipe pile sinks synchronously with the drill bit under the action of zero pile sinking resistance or small pile sinking resistance; the residual soil generated by the drilling is brought out to the ground through the spiral blades on the long spiral drill rod in the inner cavity of the pipe pile;

[0033] S2. Pile connection:

[0034] The upper and lower sections of the pipe piles are connected by welding and sealed; the grouting pipes between the upper and lower sections of the pipe piles are connected by high-strength aluminum-plastic pipes;

[0035] S3. Repeat S1 and S2 until the pile length reaches the designed length or the pile end is effectively embedded in the designed stratum and the pile side is grouting through the grouting pipe pre-buried in the pipe wall of the pile;

[0036] S4. Dredging and bottom sealing:

[0037] After cleaning the bottom of the hole, pour concrete into the bottom of the hole through the pipe cavity, and carry out anti-corrosion treatment on the concrete at the bottom of the hole;

[0038] S5. Repeat S1 to S4 until all pile foundation construction is completed;

[0039] S6. Sealing test and pile inspection;

[0040] S7. Arrange (108) a heat transfer medium delivery pipeline in the pile;

[0041] Internal supports are arranged in sections, and the heat transfer medium delivery pipeline is tied to the internal supports to fix the heat transfer medium delivery pipeline and reduce its hanging gravity;

[0042] S8. Inject electrolyte into the pile;

[0043] S9. Install accessories and debug operation:

[0044] Install the top cover plate, electrolyte delivery unit, battery stack inverter, heat transfer medium delivery unit, valve system, heat exchange unit and connect each device to the integrated control unit, and then debug and operate. In a preferred embodiment, it is characterized in that a grouting pipeline is pre-buried inside the storage pile.

[0045] In a preferred example, the step S8 includes: injecting positive electrode electrolyte into a part of the piles and injecting negative electrode electrolyte into another part of the piles according to actual needs.

[0046] In a preferred example, the installation of the top cover plate in step S9 further includes: placing the top cover plate on the top of the pipe pile, and then sealing the contact part between the top cover plate and the pipe pile; passing the pipes already arranged in the pile through the reserved holes of the top cover plate, and sealing the reserved holes.

[0047] In a preferred example, the installation of the electrolyte delivery unit, the fuel cell stack, and the inverter in step S9 further includes: connecting the positive electrode pipe piles with electrolyte delivery pipes, and connecting them to the positive electrode of the fuel cell stack through a circulation pump; connecting the negative electrode pipe piles with (electrolyte delivery pipes, and connecting them to the negative electrode of the fuel cell stack through a circulation pump; connecting the fuel cell stack to the inverter; connecting the inverter to the power supply and the load.

[0048] The advantages of the present invention include;

[0049] (1) Through the combination of technologies, an energy storage system that is both economically applicable and safe and reliable is perfectly integrated with the pile foundation system of a building, innovatively solving the problem of space limitation of the energy storage system in the building and making the space utilization more intensive.

[0050] (2) This application innovatively uses the electrolyte buried in the underground pile foundation as a cold / heat source, and exchanges heat with the heat on the user side through a heat exchange unit. In this way, it can not only serve the cooling and heating on the user side, but also indirectly reduce the energy consumption of the system thermal management. Thus, the operating costs of cooling / heating and energy storage are considered overall, and it has good economic benefits.

[0051] A large number of technical features are recorded in the description of this application, distributed in various technical solutions. If all possible combinations of technical features (i.e., technical solutions) of this application are to be listed, the description will be too long. To avoid this problem, each technical feature disclosed in the above-mentioned invention content of this application, each technical feature disclosed in the following embodiments and examples, and each technical feature disclosed in the drawings can be freely combined with each other to form various new technical solutions (these technical solutions should all be regarded as having been recorded in this specification), unless the combination of such technical features is technically infeasible. For example, in one example, features A + B + C are disclosed, and in another example, features A + B + D + E are disclosed, and features C and D are equivalent technical means that play the same role, and only one of them can be used technically and they cannot be used simultaneously. Feature E can be combined with feature C technically. Then, the solution of A + B + C + D should not be regarded as having been recorded because it is technically infeasible, while the solution of A + B + C + E should be regarded as having been recorded. Description of the Drawings

[0052] Figure 1 is a schematic structural diagram of the energy-saving power storage pile foundation system according to the present invention;

[0053] Figure 2 It is a schematic structural diagram of a single pipe pile of the energy-saving electricity storage pile foundation system according to the present invention.

[0054] Description of the reference numerals:

[0055] 1 - Positive electrode electricity storage pipe pile; 2 - Negative electrode electricity storage pipe pile; 3 - Electrolyte delivery unit; 4 - Stack; 5 - Heat exchange device; 6 - Inverter; 7 - Valve system; 8 - Heat exchange unit; 9 - Comprehensive control unit; 108 - Heat transfer medium delivery pipeline; 301 - Electrolyte circulation pump; 302 - Heat transfer medium circulation pump; 111 - Electricity storage pipe pile; 101 - Pile shoe; 102 - Bottom seal; 100 - Top cover plate; 107 - Electrolyte delivery pipeline; 103 - Slurry outlet; 105 - Grouting port; 109 - End; 106 - Grouting conduit. Detailed implementation manners

[0056] Through in-depth research and extensive screening, the inventor of the present application has developed an energy-saving electricity storage pile foundation system and its installation method. Compared with the prior art, through the combination of technologies in the present application, an economically applicable, safe and reliable energy storage system is perfectly integrated with the pile foundation system of a building, innovatively solving the problem of space limitation of the energy storage system in a building and making more intensive use of space. And the present application innovatively uses the electrolyte buried in the underground pile foundation as a cold / heat source and exchanges heat with the heat on the user side through a heat exchange unit. In this way, it can not only serve the cooling and heating on the user side, but also indirectly reduce the energy consumption of system thermal management. Thus, the operating costs of cooling / heating and energy storage are comprehensively considered, and it has good economic benefits.

[0057] To make the purpose, technical solutions and advantages of the present application clearer, the following will further describe the implementation manners of the present application in detail with reference to the drawings.

[0058] Embodiment

[0059] The large-diameter non-displacement high-bearing-capacity low-carbon energy pile described in this embodiment is as Figures 1 to 2 shown, and it includes:

[0060] The present application discloses an energy-saving electricity storage pile foundation system, including: an electricity storage pipe pile 111, an electrolyte delivery unit 3, a heat exchange unit 8, a stack 4 and a heat transfer medium delivery unit; wherein:

[0061] The electricity storage pipe pile 111 is a building load-bearing pile, including a positive electrode electricity storage pipe pile 1 and a negative electrode electricity storage pipe pile 2, and the positive electrode electricity storage pipe pile 1 and the negative electrode electricity storage pipe pile 2 are respectively connected to the positive electrode and the negative electrode of the stack 4;

[0062] The electrolyte delivery unit 3 includes an electrolytic heat delivery pipeline 107 and an electrolyte circulation pump 301, and the electrolyte delivery pipeline 107 is connected to the inside of the electricity storage pipe pile 111;

[0063] The heat exchange unit 8 is further configured with a valve system 7 and is connected to the energy storage pipe pile 111 through the valve system 7;

[0064] The heat transfer medium delivery unit includes a heat transfer medium delivery pipe 108 and a heat transfer medium circulation pump 302. The heat transfer medium delivery pipe 108 is buried in the energy storage pipe pile 111, and both ends thereof respectively converge to both sides of the heat exchange unit 8 through the valve system 7, and the heat transfer medium circulation pump 302 is used to make the heat transfer medium circulate in the heat transfer medium delivery pipe 108;

[0065] The stack is externally connected to the electric energy on the power supply side and the load on the user side through an inverter, and is connected to the cavity in the energy storage pipe pile through the electrolyte delivery unit, and is configured to charge / discharge through the electrolyte. Optionally, in one embodiment, the energy storage pipe pile 111 is composed of a pile shoe 101, a pile body, a bottom seal 102 and a top cover plate 100, and the diameter of the energy storage pipe pile 111 is 500 - 2000 mm, and the bearing capacity is greater than 1500 tons. Optionally, in another embodiment, a grouting conduit 106 is embedded in the inner wall of the energy storage pipe pile 111, a grout outlet 103 is provided at the bottom, a grouting port 105 is provided on the side wall, and the grouting conduits 106 are connected by ends 109.

[0066] Optionally, in one embodiment, the top cover plate 100 is made of anti-corrosion material and is provided with holes through which the electrolyte delivery pipe 107 and the heat transfer medium delivery pipe 108 can pass.

[0067] Optionally, in one embodiment, the energy-saving energy storage pile foundation system further includes: an integrated control unit, and the integrated control unit includes: a software system, sensors, a controller and instruments. The integrated control unit is connected to the stack and controls the heat in the energy storage pipe pile to exchange heat with the heat on the user side through the heat exchange unit.

[0068] Optionally, in one embodiment, the heat exchange unit 8 includes a compressor, an evaporator, a condenser, an expansion valve and a pipeline system, and the valve system includes: a four-way valve.

[0069] Optionally, in one embodiment, the number of the positive electrode energy storage pipe piles and the negative electrode energy storage pipe piles is the same and not less than three.

[0070] Optionally, in one embodiment, the heat transfer medium delivery pipe 108 is arranged in a spiral structure inside the energy storage pipe pile 111 and is connected and fixed through a special joint.

[0071] Optionally, in one embodiment, a heat exchange device 5 is arranged on the electrolyte delivery pipe.

[0072] Optionally, in one embodiment, the battery stack 4 can allow the positive electrode electrolyte and the negative electrode electrolyte to react therein, and the reaction includes:

[0073]

[0074] Optionally, in one embodiment, the electricity storage pipe piles are made of high-performance cementitious materials, and the high-performance cementitious materials are made of solid waste materials as the main materials, and the steps include: industrial materials containing active silicon and aluminum are first processed into high-performance cementitious materials by one or more of the following treatment methods: alkali activation method, thermal activation method, mechanical activation method, microbial activation method, electrochemical activation method and wet heat treatment method, and then high-performance concrete is configured based on the cementitious materials.

[0075] Optionally, in one embodiment, the grouting conduit 106 of the grouting port 103 is arranged on the side wall of the electricity storage pipe pile, and when piling is performed, the heat-conducting enhanced grouting body is injected through the grouting conduit 106, so that it forms a heat-conducting enhanced structure after cooling, and the electricity storage pipe pile and the soil are more firmly combined. The heat-conducting enhanced grouting body is selected from any one of the following or a combination thereof: cement-based phase change material grouting body, mineral-based grouting body, and microbial phase change capsule grouting body.

[0076] Optionally, in one embodiment, the system is installed by the following method:

[0077] S1. Drilling and pile sinking: After the expandable and retractable drill bit is connected to the long spiral drill rod, it enters the stratum to be piled through the inner cavity of the large-diameter pipe pile; the drill rod is driven to drill holes, and the drill bit expands under the action of soil pressure, causing the diameter of the drilled hole to be larger than the outer diameter of the pipe pile, ensuring that the pipe pile sinks synchronously with the drill bit under the action of zero pile sinking resistance or small pile sinking resistance; the residual soil generated by the drilling is brought out to the ground through the spiral blades on the long spiral drill rod in the inner cavity of the pipe pile;

[0078] S2. Pile connection:

[0079] The upper and lower sections of the pipe piles are connected by welding and sealed; the grouting pipes between the upper and lower sections of the pipe piles are connected by high-strength aluminum-plastic pipes;

[0080] S3. Repeat S1 and S2 until the pile length reaches the designed length or the pile end is effectively embedded in the designed stratum and grouting is performed on the pile side through the grouting pipe pre-buried in the wall of the pile;

[0081] S4. Dredging and bottom sealing:

[0082] After cleaning the bottom of the hole, pour concrete into the bottom of the hole through the pipe cavity, and carry out anti-corrosion treatment on the concrete at the bottom of the hole;

[0083] S5. Repeat S1 to S4 until all pile foundation construction is completed;

[0084] S6. Sealing test and pile inspection;

[0085] S7. Arrange (108) a heat transfer medium delivery pipeline in the pile;

[0086] Internal supports are arranged in sections, and the heat transfer medium delivery pipeline is tied to the internal supports to fix the heat transfer medium delivery pipeline and reduce its hanging gravity;

[0087] S8. Inject electrolyte into the pile;

[0088] S9. Install accessories and debug operation:

[0089] Install the top cover plate 110, electrolyte delivery unit 3, inverter 6, heat transfer medium delivery unit, valve system 7, heat exchange unit 8 and connect each device to the integrated control unit 9, and then debug and run.

[0090] Optionally, in one embodiment, a grouting pipe is pre-buried inside the electricity storage pipe pile.

[0091] Optionally, in one embodiment, the step S8 includes: injecting positive electrode electrolyte into a part of the piles and injecting negative electrode electrolyte into another part of the piles according to actual needs.

[0092] Optionally, in one embodiment, the installation of the top cover plate 110 in step S9 further includes: placing the top cover plate on the top of the pipe pile, and then sealing the contact portion between the top cover plate and the pipe pile; passing the pipe arranged in the pile through the reserved hole of the top cover plate, and sealing the reserved hole.

[0093] Optionally, in one embodiment, the installation of the electrolyte delivery unit 3, the fuel cell stack 4, and the inverter 6 in step S9 further includes: connecting each positive electrode pipe pile with an electrolyte delivery pipe, and connecting them to the positive electrode of the fuel cell stack through a circulation pump; connecting each negative electrode pipe pile with an electrolyte delivery pipe, and connecting them to the negative electrode of the fuel cell stack 4 through a circulation pump 3; connecting the fuel cell stack 4 to the inverter 6; connecting the inverter 6 to the power supply and the load.

[0094] It should be noted that in the application documents of this patent, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one" does not exclude the presence of additional identical elements in the process, method, article or device comprising said element. In the application documents of this patent, if it is mentioned that a certain act is performed according to a certain element, it means that the act is performed at least according to that element, including two cases: performing the act only according to that element and performing the act according to that element and other elements. Expressions such as multiple, many times, various, etc. include 2, 2 times, 2 kinds and more than 2, more than 2 times, more than 2 kinds.

[0095] This specification includes combinations of various embodiments described herein. A separate reference to "an embodiment" or a particular embodiment, etc. does not necessarily refer to the same embodiment; however, unless indicated to be mutually exclusive or clearly understood by those skilled in the art to be mutually exclusive, these embodiments are not mutually exclusive. It should be noted that, unless the context clearly indicates or requires otherwise, the word "or" is used in a non-exclusive sense in this specification.

[0096] All documents mentioned in this application are considered to be integrally included in the disclosure of this application so that they can be used as a basis for modification if necessary. In addition, it should be understood that after reading the above disclosure of this application, those skilled in the art can make various changes or modifications to this application, and these equivalent forms also fall within the scope claimed by this application.

Claims

1. An energy-saving electricity storage pile foundation system, It is characterized in that include: Storage pile, electrolyte delivery unit, battery stack, heat exchange unit and heat transfer medium delivery unit; wherein: The electricity storage pipe pile is a building load-bearing pile, the cavity inside which is filled with electrolyte, and the electricity storage pipe pile includes a positive electrode electricity storage pipe pile and a negative electrode electricity storage pipe pile; The electrolyte delivery unit includes an electrolyte delivery pipeline, which is connected to the inside of the battery pile; the electrolyte in the battery pile flows through the electrolyte delivery pipeline and is delivered to the battery stack for charging and discharging reaction; The heat transfer medium delivery unit includes a heat transfer medium delivery pipeline, which is buried in the electricity storage pipe pile, and its two ends are respectively connected to the two sides of the heat exchange unit, and heat is exchanged with the user side in the heat exchange unit.

2. The energy-saving electricity storage pile foundation system according to claim 1, It is characterized in that The energy-saving electricity storage pile foundation system also includes: an integrated management and control unit, which includes: a sensor, a controller and an instrument. The integrated management and control unit is configured to control the charging / discharging of the battery stack on the one hand, and control the heat exchange between the electricity storage pile and the user side through the heat exchange unit on the other hand.

3. The energy-saving electricity storage pile foundation system according to claim 1, It is characterized in that The heat exchange unit includes a compressor, an evaporator, a condenser, an expansion valve and a piping system.

4. The energy-saving electricity storage pile foundation system according to claim 1, It is characterized in that The valve system is selected from the following group: a four-way valve, an electronic expansion valve or a reversible cycle system.

5. The energy-saving electricity storage pile foundation system according to claim 1, It is characterized in that The heat transfer medium delivery pipeline is arranged in a spiral structure inside the electricity storage pipe pile and is connected and fixed by a joint.

6. The energy-saving electricity storage pile foundation system according to claim 1, It is characterized in that The inner wall of the electricity storage pipe pile is pre-buried with a grouting conduit, the bottom is provided with a grouting outlet, the side wall is provided with a grouting outlet, and the grouting conduits between the plurality of electricity storage pipe piles are connected through ends.

7. The energy-saving electricity storage pile foundation system according to claim 1, Features The electrolyte delivery pipeline is further provided with a heat exchange device.

8. The energy-saving electricity storage pile foundation system according to claim 1, It is characterized in that The heat transfer medium delivery unit further includes a heat transfer medium circulation pump, and the electrolyte delivery unit further includes an electrolyte circulation pump.

9. An installation method for the energy-saving electricity storage pile foundation system according to any one of claims 1 to 8, It is characterized in that The method comprises the following steps: S1. Drilling and pile sinking: After connecting the drill bit to the long spiral drill rod, the drill bit enters the stratum to be piled through the inner cavity of the power-storage pipe pile; driving the drill rod to drill a hole, and under the action of soil pressure, the drill bit expands so that the diameter of the drilled hole is larger than the outer diameter of the power-storage pipe pile, ensuring that the power-storage pipe pile sinks synchronously with the drill bit; S2. Pile connection: The upper and lower sections of the pipe piles are connected and sealed; the grouting pipes between the upper and lower sections of the pipe piles are connected through high-strength aluminum-plastic pipes; S3. Repeat S1 and S2 until the pile length reaches the designed length or the pile end is effectively embedded in the designed stratum and the pile side grouting is performed through the grouting pipe pre-buried in the wall of the power storage pipe pile; S4. Dredging and bottom sealing: After cleaning the slag at the bottom of the hole, cementitious material is poured into the bottom of the hole through the grouting pipe; S5. Repeat S1 to S4 until all pile foundation construction is completed; S6. Sealing test and pile inspection; S7. Arrange heat transfer medium delivery pipeline inside the pile; S8. Inject electrolyte into the pile; S9. Install accessories and debug operation: Install the top cover, electrolyte delivery unit, fuel cell stack, inverter, heat transfer medium delivery unit, valve system, heat exchange unit and connect each device to the integrated management and control unit before commissioning and operation.

10. The method according to claim 9, Features The grouting pipeline is pre-buried in the pipe wall of the electricity storage pipe pile when the electricity storage pipe pile is manufactured.

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