Encircling type self-cooling sand-prevention energy storage system for desert photovoltaic piles and installation method of encircling type self-cooling sand-prevention energy storage system

Abstract

The invention relates to the technical field of desert photovoltaic power generation, in particular to an embracing type self-cooling sand-prevention energy storage system of desert photovoltaic piles and an installation method of the embracing type self-cooling sand-prevention energy storage system, and the system is composed of a hoop ring body, a fan-shaped energy storage cabin and a detachable module. The hoop ring body is installed on a photovoltaic pile body in a surrounding mode, a vertical chimney channel is arranged in the hoop ring body, a gradually-shrunk flow guide cover is arranged on the top of the hoop ring body, a natural convection airflow channel is formed through the hot-pressing effect, the principle that air around the photovoltaic pile rises after being heated is utilized, passive self-cooling of an energy storage system is achieved, and heat dissipation energy consumption is reduced. The fan-shaped energy storage cabins are evenly arranged on the periphery of the hoop ring body and are annularly distributed, the detachable modules are installed on the connecting portions of the fan-shaped energy storage cabins and the hoop ring body, modular design is adopted, rapid assembly and maintenance of the energy storage cabins and the ring body are achieved, and the adaptability and expansibility of the system are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of desert photovoltaic power generation, and in particular to an enveloping self-cooling and sand-proof energy storage system for desert photovoltaic piles and an installation method thereof. Background Art

[0002] Traditional desert photovoltaic energy storage systems generally adopt containerized integration solutions. This technical route has the advantages of standardization and easy deployment in non-extreme environments, but it exposes four major systemic defects under the special climatic conditions of the desert.

[0003] The existing system relies on forced air cooling, requiring the continuous operation of high-energy fans (single cabinet power ≥ 1.5kW). In the extreme desert operating conditions, where the temperature swing between day and night can reach 30°C, the air cooling system must operate 24 / 7 to maintain the battery cell temperature ≤ 45°C. This results in heat dissipation consuming as much as 20%-25% of the total system power consumption. Furthermore, high temperatures accelerate battery cell aging. Experimental data shows that at 50°C, the annual battery capacity degradation rate reaches 6% (compared to 2% under standard operating conditions), significantly shortening the system's lifespan.

[0004] The containerized solution uses a flat layout, with a single standard 1MWh container occupying approximately 12 square meters. Furthermore, the additional requirements of sand dune leveling and concrete foundation laying increase construction costs by 15%-20%. Compared to the available land per square kilometer in desert regions, this solution utilizes less than 30% of the available space, seriously conflicting with the principle of "land-intensive" development for PV power plants.

[0005] Existing sand control designs generally use metal filters (pore size 0.5-1mm), which can intercept coarse sand particles, but micron-sized dust (PM2.5) can still penetrate the filter. The sand accumulation rate at the air inlet is as high as 2.3kg / m 2 Every day, dust and sandstorms cause wind turbine pressure drops to increase monthly, requiring manual cleaning more than once a month. Operation and maintenance data from a demonstration project shows that dust-related failures are the primary cause of these failures.

[0006] Existing improvement solutions (such as liquid cooling and underground burial) have inherent limitations: the liquid cooling system consumes precious water resources, and the construction difficulty of the underground solution increases exponentially with the dune mobility index. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to address the deficiencies in the above-mentioned prior art and provide an enveloping self-cooling and sand-proof energy storage system for desert photovoltaic piles and its installation method, so as to solve the technical problems of low heat dissipation efficiency, difficult maintenance and large footprint of energy storage systems in extreme desert environments.

[0008] The purpose of the present invention is achieved by the following technical solutions: In a first aspect, the present invention provides an enveloping self-cooling and sand-proof energy storage system for desert photovoltaic piles, comprising: The hoop ring body is installed around the photovoltaic pile body. A vertical chimney channel is provided inside the hoop ring body, and a tapered air guide cover is provided on the top to form a hot pressurized air flow channel; The fan-shaped energy storage cabin is evenly arranged on the periphery of the hoop ring and is used for energy storage; The detachable module is installed at the connection between the fan-shaped energy storage cabin and the hoop ring body, and is used to integrate the fan-shaped energy storage cabin onto the hoop ring body.

[0009] As a further improvement of the present invention, a honeycomb sand-proof grille is provided at the bottom air inlet of the hoop ring body. The honeycomb sand-proof grille adopts a hexagonal honeycomb structure, and the aperture of the hexagonal honeycomb structure is larger than twice the median particle size of desert sand.

[0010] As a further improvement of the present invention, the outer surface of the hoop ring body is sprayed with a silicon carbide coating.

[0011] As a further improvement of the present invention, the air flow velocity of the hot pressure air flow channel is:

[0012] in, is the air flow velocity; is the acceleration due to gravity; is the height of the vertical chimney; is the ambient temperature difference; is the absolute temperature of the environment.

[0013] As a further improvement of the present invention, the surface of the sector-shaped energy storage cabin is coated with a composite phase-change coating, and the phase-change coating is a paraffin / expanded graphite composite material.

[0014] As a further improvement of the present invention, the detachable module includes magnetic locks provided on both sides of the fan-shaped energy storage compartment and plug-in electrodes provided at the lower end; The detachable module is fixed to the magnetic area on the inner wall of the sector cabin by magnetic locks on both sides. The lock positions correspond to the positions of the magnetic points in the cabin. The magnetic locks are Halbach arrays. A set of plug-in electrodes is set at the bottom of the module, which is connected to the preset circuit interface at the bottom of the fan-shaped energy storage cabin.

[0015] As a further improvement of the present invention, a self-cleaning component is also included. The self-cleaning component is embedded in the honeycomb sand-proof grid and is used for vibrating and cleaning sand.

[0016] As a further improvement of the present invention, the self-cleaning component is a piezoelectric ceramic piece, and the driving voltage of the piezoelectric ceramic piece is 40-50V and the frequency is 10-20kHz.

[0017] As a further improvement of the present invention, the natural convection heat transfer of the energy storage system is:

[0018] Where, is the natural convection heat transfer, is the convective heat transfer coefficient, is the heat transfer area, is the ambient temperature difference.

[0019] In a second aspect, the present invention provides a desert photovoltaic pile-embracing self-cooling and sand-proof energy storage system and an installation method thereof. The above-mentioned photovoltaic pile-embracing self-cooling energy storage system comprises: Install the hoop ring around the photovoltaic pile body and lock it with bolts or snap structures; The hoop is placed around the photovoltaic pile body, and the tightness of the hoop is adjusted to fit tightly with the photovoltaic pile body; The fan-shaped energy storage capsules are evenly arranged along the circular trajectory of the outer periphery of the hoop ring body, so that the inner connecting surface of each fan-shaped energy storage capsule fits in with the outer mounting surface of the hoop ring body, and the axis of the fan-shaped energy storage capsule is consistent with the radial direction of the hoop ring body; Place the detachable module at the connection between the fan-shaped energy storage cabin and the hoop ring body, align the magnetic locks on both sides of the module with the magnetic areas on the fan-shaped energy storage cabin and the hoop ring body, and push it along the guide groove until the magnetic locks are locked to complete the integration and fixation of the fan-shaped energy storage cabin and the hoop ring body.

[0020] The beneficial effects of the present invention are as follows: the present invention provides an enveloping, self-cooling, and sand-proof energy storage system for desert photovoltaic piles. The system utilizes a "vertical chimney channel + tapered air deflector" to construct a thermal pressure airflow channel, achieving unpowered natural convection heat dissipation based on the chimney effect (the principle of hot air rising). The heat generated by the energy storage cabin during operation is absorbed by the surrounding air, and the hot air flows upward along the vertical chimney channel. The tapered air deflector accelerates the airflow by reducing the top cross-section (Bernoulli effect), enhancing the thermal pressure driving force and significantly improving heat dissipation efficiency. Compared with traditional forced air cooling or liquid cooling solutions, it does not require additional energy consumption (such as fans and pumps), reducing operating costs, while avoiding the risk of mechanical component failure, significantly improving system reliability, and extending the life of the energy storage battery (temperature is a key factor affecting the life of lithium batteries).

[0021] Furthermore, the hoop is installed directly around the PV pile, utilizing the pile itself as a support structure, eliminating the need for additional foundations or supports and reducing land usage. The fan-shaped energy storage pods are evenly arranged around the hoop, fitting snugly around the cylindrical pile structure. This maximizes the space around the pile and creates an integrated "pile-energy storage" design. This layout is particularly suitable for distributed PV applications (such as rooftop and mountain PV), efficiently integrating energy storage within limited space and increasing energy storage density per unit area.

[0022] Furthermore, detachable modules connect the sector-shaped energy storage pods to the hoop ring, enabling "plug-and-play" modular installation. When the energy storage pods need expansion (increasing the number of sector-shaped pods) or maintenance (replacing faulty modules), only the corresponding modules need to be removed, eliminating the need for complete disassembly. This significantly reduces downtime and operational costs. The modular design also facilitates standardized production and adaptability to varying capacity requirements (for example, adjusting the number of energy storage pods based on installed PV capacity), enhancing system flexibility.

[0023] Furthermore, the hoop ring can be adjusted to accommodate photovoltaic piles of varying diameters (such as concrete and steel pipe piles), providing high versatility. The symmetrical distribution of the fan-shaped energy storage capsules balances the forces acting on the piles, reducing the impact of wind loads and vibration on the structure and adapting to complex environments (such as those with high wind speeds and large temperature fluctuations). Furthermore, the self-cooling system does not rely on external energy sources (such as the grid), allowing for stable operation in remote areas without electricity, expanding the application scenarios of energy storage systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a schematic structural diagram of the enveloping self-cooling energy storage system of the photovoltaic pile of the present invention; In the figure: 1. Clamp ring; 2. Fan-shaped energy storage cabin; 3. Removable module. DETAILED DESCRIPTION

[0026] In order to make the purpose and technical solution of the present invention clearer and easier to understand, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] The technical solutions of the present invention will be described clearly and completely below with reference to the accompanying drawings and specific embodiments. The described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Example 1 This PV pile's encircling self-cooling energy storage system is an integrated, efficient energy storage and self-cooling system designed specifically for PV piles in desert environments. Through its scientific and rational structural design, it achieves stable installation on the PV pile, efficient energy storage, and excellent self-cooling properties. It can adapt to a variety of complex environments, especially operating reliably in special environments such as deserts. The vertical chimney clamp energy storage system for desert PV piles integrates the energy storage function into the PV pile through an integrated design of the clamp ring and the PV pile, eliminating the need for additional floor space. The core of the system uses vertical chimney hot-pressed airflow (heat dissipation of up to 2700W / pile) in conjunction with a phase-change coating to control the temperature of the energy storage module. Combined with a magnetic quick-release module, it can be replaced in dusty environments within 3 minutes. The integrated self-cleaning grille and radiant heat dissipation technology make it adaptable to temperatures of 70°C and strong dusty environments, ensuring high reliability and low-cost operation and maintenance for desert PV energy storage.

[0029] The system in this embodiment consists of a hoop ring 1, fan-shaped energy storage capsules 2, detachable modules 3, and a self-cleaning assembly. The hoop ring 1 is installed around the PV pile, providing the installation foundation and self-cooling channel for the entire system. The fan-shaped energy storage capsules 2 are evenly arranged around the hoop ring 1 and perform the core function of energy storage. The detachable modules 3 facilitate the integration and separation of the fan-shaped energy storage capsules 2 and the hoop ring 1. The self-cleaning assembly ensures the unobstructed flow of the system's air inlet.

[0030] The hoop ring 1 is the system's key support and self-cooling channel component, installed around the PV pile. It houses a vertical chimney channel and a tapered air guide shroud on top. Together, they form a thermal pressure airflow channel, utilizing the principle of thermal pressure to promote airflow and achieve self-cooling.

[0031] A honeycomb sand-blocking grille is installed at the air inlet at the bottom of the hoop ring 1. This grille features a hexagonal honeycomb structure with an aperture larger than twice the median size of desert sand. This design effectively blocks desert sand from entering the passageway while ensuring smooth air circulation, making it particularly suitable for sandy environments such as deserts.

[0032] The outer surface of the clamp ring body 1 is sprayed with a silicon carbide coating. Silicon carbide has extremely high hardness and wear resistance, as well as good high temperature resistance and oxidation resistance. It can significantly improve the service life of the clamp ring body 1 in complex outdoor environments and resist wind and sand erosion and high temperature exposure.

[0033] The air flow velocity of the hot pressure air flow channel is:

[0034] in, is the air flow velocity in meters per second (m / s). It indicates the gas flow speed driven by temperature difference and gravity; is the acceleration due to gravity, usually taken as 9.8 m / s 2 (approximate value of the Earth's surface); is the height of the vertical chimney in meters (m). In this example, it is 120 m; is the ambient temperature difference, in Kelvin (K) or degrees Celsius (°C), and Kelvin in this embodiment is 20 K; is the absolute ambient temperature in Kelvin (K). In this embodiment, T0 = 293 K (corresponding to 20°C + 273.15). This formula can be used to calculate the airflow velocity within the hot-pressurized airflow channel under different ambient conditions, thereby evaluating the self-cooling effect.

[0035] The fan-shaped energy storage compartments 2 are evenly arranged around the outer periphery of the hoop ring 1 and serve as the primary location for energy storage. Their surfaces are coated with a composite phase-change coating made of paraffin wax and expanded graphite. Paraffin wax has a high latent heat of phase change, allowing it to absorb or release large amounts of energy when the temperature changes. Expanded graphite, with its excellent thermal conductivity and porous structure, effectively improves the thermal conductivity and stability of paraffin wax, enabling the fan-shaped energy storage compartments 2 to efficiently store and release energy.

[0036] The detachable module 3 is installed at the connection part between the fan-shaped energy storage cabin 2 and the hoop ring body 1, and is used to integrate the fan-shaped energy storage cabin 2 on the hoop ring body 1. It includes magnetic locks on both sides of the fan-shaped energy storage cabin 2 and plug-in electrodes at the lower end.

[0037] The removable module 3 is secured to the magnetic area on the inner wall of the sector-shaped cabin by magnetic latches on both sides. The latches are positioned to correspond to the magnetic points inside the cabin. The magnetic latches are a Halbach array. The Halbach array is a special arrangement of permanent magnets that generates a strong magnetic field on one side. This makes the attachment between the magnetic latches and the magnetic area stronger and more stable, while reducing magnetic interference on the other side, improving the reliability and stability of the fixation.

[0038] A set of plug-in electrodes is set at the bottom of the module, which connects to the circuit interface preset at the bottom of the fan-shaped energy storage cabin 2. This plug-in design makes it easier to connect and disconnect the fan-shaped energy storage cabin 2 from the circuit system, making it easier to install, maintain and replace.

[0039] The energy storage system also includes a self-cleaning component, which is embedded in the honeycomb sand-proof grille and is used to vibrate and clean sand to prevent sand from clogging the honeycomb sand-proof grille, thereby ensuring smooth air intake.

[0040] The self-cleaning component is a piezoelectric ceramic sheet with a driving voltage of 40-50V and a frequency of 10-20kHz. When the piezoelectric ceramic sheet operates at the corresponding driving voltage and frequency, it generates high-frequency vibrations. These vibrations are transmitted to the honeycomb sand prevention grid, causing the sand particles attached to the grid to be shaken off, thereby achieving self-cleaning function and ensuring normal air intake at the air inlet.

[0041] The natural convection heat exchange capacity of the energy storage system is:

[0042] where, is the natural convection heat exchange capacity, is the convective heat transfer coefficient, is the heat transfer area, is the ambient temperature difference.

[0043] This formula is used to calculate the amount of heat exchange by the system through natural convection. By calculating the natural convection heat exchange capacity, the heat dissipation or heat absorption capacity of the system can be evaluated, providing important reference for the thermal management and performance optimization of the system.

[0044] Table 1: Comparison of effects of traditional and inventive methods

[0045] This embodiment uses vertical chimney thermal pressure airflow and phase change coating to cooperatively control temperature, uses a magnetic quick-release module to achieve rapid replacement in a sand and dust environment, integrates self-cleaning and radiation heat dissipation technology to adapt to extreme environments, and reduces the land area by 0% and the operation and maintenance cost by 70% compared to traditional container solutions.

[0046] To further illustrate the effectiveness of the system in this embodiment, the following describes a vertical chimney hoop energy storage system for a photovoltaic pile in a certain desert environment.

[0047] The hoop ring body is the core support and temperature control channel component of the system, with a vertical chimney channel inside. The vertical chimney cross-sectional area accounts for 30% of the photovoltaic pile diameter, and the height H=6m. The airflow can be driven by the thermal pressure effect to achieve efficient heat dissipation. A tapered fairing is provided at the top of the hoop ring body, with a contraction angle of 10°-15° (preferably 12°). This contraction angle design optimizes airflow guidance, enhances the thermal pressure effect, and increases airflow speed.

[0048] A honeycomb sand prevention grid is provided at the air inlet of the bottom of the hoop ring body. The grid uses a regular hexagonal honeycomb structure with a pore size Φ that satisfies Φ=3-5×d50, where d50 is the median particle size of the local desert sand particles, and the porosity is ≥55% (55% is taken in actual application). When the flux Q=0.3m 3 / s, the grille pressure drop ΔP is less than 50Pa, which can effectively prevent sand and dust from entering the vertical chimney channel and ensure smooth airflow.

[0049] In addition, the outer surface of the clamp ring is sprayed with silicon carbide coating, and the coating emissivity ε ≥ 0.93, which can achieve cooling through nighttime radiation heat dissipation. The temperature difference of nighttime radiation cooling is greater than 10°C, further enhancing the heat dissipation capacity of the system.

[0050] The fan-shaped energy storage cabins are evenly distributed on the periphery of the hoop ring (i.e., the periphery of the vertical chimney channel), and the number is adapted according to the diameter of the photovoltaic pile. For example, when a 100MW desert photovoltaic power station uses Φ800mm piles, 18 fan-shaped energy storage cabins are evenly distributed on the hoop ring, and the arc length of a single fan-shaped energy storage cabin is 104.7mm. The wall of the fan-shaped energy storage cabin is 4mm thick and is coated with an Al2O3 / SiO2 composite phase change coating. The phase change point of this coating is 45°C (within the design range of 40-50°C) and the latent heat is 180J / g. It can absorb heat during the day and release heat at night, and cooperate with the vertical chimney hot pressure airflow to achieve temperature control of the energy storage module.

[0051] The detachable module is the core component that enables rapid replacement of the energy storage unit. It adopts a magnetic quick-release design and can be replaced in a dusty environment within 3 minutes. The module is equipped with NdFeB magnetic locks (magnetic locks) on both sides, with an adsorption force of ≥200N, ensuring that the module is firmly fixed in strong dust and vibration environments; the bottom of the module is equipped with plug-in electrodes with an electrode protection level of IP69K, which can withstand high-temperature and high-pressure water spray and dust intrusion, and the contact resistance is less than 0.1mΩ, ensuring low loss and high reliability of circuit connections. The connection between the module and the fan-shaped energy storage cabin is positioned through a guide groove. After alignment, push it in to lock it with a magnetic lock. When disassembling, only a standard crowbar is needed to separate them, which is easy to operate.

[0052] The honeycomb anti-sand grille has an embedded self-cleaning component, a piezoelectric ceramic disc driven by a 50V voltage and 20kHz frequency. The system is programmed to vibrate and clean sand three times daily. This high-frequency vibration shakes off sand particles adhering to the grille, preventing them from clogging and ensuring unobstructed airflow. Actual operational data shows that after a sandstorm, sand accumulation on the honeycomb grille is less than 5%, and the energy consumption per cleaning cycle is only 0.2kWh.

[0053] The silicon carbide coating (emissivity ε ≥ 0.93) sprayed on the outer surface of the hoop ring can release heat to the outside through radiation heat dissipation at night, realizing nighttime radiation cooling with a cooling temperature difference of > 10°C. It works together with the heat dissipation of the vertical chimney hot pressure airflow during the day to form an all-weather temperature control system that is suitable for the high temperature environment of 70°C in the desert.

[0054] By integrating the "support + heat dissipation + energy storage" functions, the investment in additional equipment (such as cooling fans and independent brackets) is reduced; the natural heat dissipation solution reduces long-term operation and maintenance energy consumption; the modular design shortens the installation cycle, and the overall cost (initial investment + operation and maintenance) is better than that of traditional centralized energy storage solutions. It is especially suitable for the "small capacity, multi-node" energy storage needs of distributed photovoltaic projects, improving the overall economic efficiency of the project.

[0055] Example 2 This embodiment is based on the above-mentioned encircling self-cooling energy storage system of photovoltaic piles, and its installation method is described in detail to ensure that the various components of the system can be assembled together accurately and firmly to give full play to the performance of the system.

[0056] The steps of the installation method of the photovoltaic pile encircling self-cooling energy storage system include: Install the hoop ring around the photovoltaic pile body and lock it with bolts or snap structures; The hoop is placed around the photovoltaic pile body, and the tightness of the hoop is adjusted to fit tightly with the photovoltaic pile body; The fan-shaped energy storage capsules are evenly arranged along the circular trajectory of the outer periphery of the hoop ring body, so that the inner connecting surface of each fan-shaped energy storage capsule fits in with the outer mounting surface of the hoop ring body, and the axis of the fan-shaped energy storage capsule is consistent with the radial direction of the hoop ring body; Place the detachable module at the connection between the fan-shaped energy storage cabin and the hoop ring body, align the magnetic locks on both sides of the module with the magnetic areas on the fan-shaped energy storage cabin and the hoop ring body, and push it along the guide groove until the magnetic locks are locked to complete the integration and fixation of the fan-shaped energy storage cabin and the hoop ring body.

[0057] Specifically, before installing the hoop, the installation area of ​​the photovoltaic pile must be cleaned to remove dust, oil, rust, and other impurities from the surface. Ensure the pile surface is flat and clean to ensure a tight fit between the hoop and the pile. Also, check the integrity of the hoop, including the unobstructed vertical chimney passage, the intact tapered air deflector, the honeycomb sand-proof grille at the bottom, and the integrity of the silicon carbide coating on the outer surface of the hoop.

[0058] Place the clamp around the intended installation location on the PV pile. If the PV pile is cylindrical, ensure the center of the clamp aligns with the pile axis to ensure uniform force on the clamp.

[0059] Tighten the hoop ring using bolts or a clip. If using a bolt system, insert the bolts through the lugs at both ends of the hoop ring. Then, gradually tighten the nuts with a wrench until the hoop ring is initially secured to the pile. If using a clip system, insert the raised portion of the clip into the corresponding slot. A click indicates that the clip is initially tightened.

[0060] After the initial tightening, the tightness of the hoop ring needs to be adjusted. By further tightening the bolts or adjusting the position of the buckle, the hoop ring is tightly fitted with the photovoltaic pile body to ensure that there is no gap between the two. The tightness of the hoop ring can be checked by shaking it with your hand to check if it is loose. Until the hoop ring is firmly installed on the pile body and does not displace.

[0061] The installation position of the fan-shaped energy storage cabin is determined on the periphery of the hoop ring. Since the fan-shaped energy storage cabin needs to be uniformly arranged along the circular track on the periphery of the hoop ring, it can be first divided into equal parts according to the number of fan-shaped energy storage cabins on the periphery of the hoop ring, which serves as the installation reference point for each fan-shaped energy storage cabin.

[0062] The installation position of the fan-shaped energy storage cabin is determined on the periphery of the hoop ring. Since the fan-shaped energy storage cabin needs to be uniformly arranged along the circular track on the periphery of the hoop ring, it can be first divided into equal parts according to the number of fan-shaped energy storage cabins on the periphery of the hoop ring, which serves as the installation reference point for each fan-shaped energy storage cabin.

[0063] After all the fan-shaped energy storage cabins are initially arranged, temporary fixing measures such as using adhesive tape or temporary clamps can be used to fix the fan-shaped energy storage cabins on the hoop ring to prevent displacement during the subsequent installation of the detachable module.

[0064] Check the integrity of the detachable module, check if the magnetic lock on both sides is intact, if the magnetism of the Halbach array is normal, and if the plug-in electrode at the bottom is damaged or deformed. At the same time, clean the guide slot at the connection between the fan-shaped energy storage cabin and the hoop ring to ensure that there is no debris in the guide slot so that the detachable module can be smoothly pushed in.

[0065] Place the detachable module at the connection between the fan-shaped energy storage cabin and the hoop ring, and make the magnetic lock on both sides of the module accurately align with the magnetic attraction area on the fan-shaped energy storage cabin and the hoop ring respectively. During the alignment process, the position marks of the magnetic lock and the magnetic attraction area can be observed to ensure that they correspond completely.

[0066] Slowly push the detachable module along the guide slot, and keep the module stable during the pushing process to avoid tilting or jamming. When the module is pushed to the right position, the magnetic lock will be automatically attracted and locked with the magnetic attraction area under the action of magnetic force. Whether it is installed in place can be judged by feeling or listening to the locking sound.

[0067] After the detachable module is locked, check whether the plug-in electrode at the bottom of the module is accurately connected with the pre-set circuit interface at the bottom of the fan-shaped energy storage cabin. The electrode can be checked for stable connection by gently pulling the module, and the continuity of the circuit can also be detected with a special instrument to ensure that the electrode is well connected and the circuit is normally connected.

Claims

1. A desert photovoltaic pile enveloping self-cooling and anti-sand energy storage system, characterized by: include: The hoop ring body is installed around the photovoltaic pile body. A vertical chimney channel is provided inside the hoop ring body, and a tapered air guide cover is provided on the top to form a hot pressurized air flow channel; The fan-shaped energy storage cabin is evenly arranged on the periphery of the hoop ring and is used for energy storage; The detachable module is installed at the connection between the fan-shaped energy storage cabin and the hoop ring body, and is used to integrate the fan-shaped energy storage cabin onto the hoop ring body.

2. The encircling self-cooling and anti-sand energy storage system for desert photovoltaic piles according to claim 1 is characterized in that: A honeycomb sand-proof grille is provided at the bottom air inlet of the hoop ring body. The honeycomb sand-proof grille adopts a hexagonal honeycomb structure. The aperture of the hexagonal honeycomb structure is larger than twice the median particle size of desert sand.

3. The encircling self-cooling and anti-sand energy storage system for desert photovoltaic piles according to claim 2 is characterized in that: The outer surface of the clamp ring is sprayed with silicon carbide coating.

4. The encircling self-cooling and anti-sand energy storage system for desert photovoltaic piles according to claim 1 is characterized in that: The air flow velocity of the hot pressure air flow channel is: in, is the air flow velocity; is the acceleration due to gravity; is the height of the vertical chimney; is the ambient temperature difference; is the absolute temperature of the environment.

5. The encircling self-cooling and anti-sand energy storage system for desert photovoltaic piles according to claim 1 is characterized in that: The surface of the fan-shaped energy storage cabin is coated with a composite phase change coating, which is a paraffin / expanded graphite composite material.

6. The encircling self-cooling and anti-sand energy storage system for desert photovoltaic piles according to claim 1 is characterized in that: The detachable module includes magnetic locks on both sides of the fan-shaped energy storage compartment and plug-in electrodes at the lower end; The detachable module is fixed to the magnetic area on the inner wall of the sector cabin by magnetic locks on both sides. The lock positions correspond to the positions of the magnetic points in the cabin. The magnetic locks are Halbach arrays. A set of plug-in electrodes is set at the bottom of the module, which is connected to the preset circuit interface at the bottom of the fan-shaped energy storage cabin.

7. The encircling self-cooling and anti-sand energy storage system for desert photovoltaic piles according to claim 1 is characterized in that: It also includes a self-cleaning component, which is embedded in the honeycomb sand-proof grid and is used for vibrating and cleaning sand.

8. The encircling self-cooling and anti-sand energy storage system for desert photovoltaic piles according to claim 7 is characterized in that: The self-cleaning component is a piezoelectric ceramic piece, and the driving voltage of the piezoelectric ceramic piece is 40-50V and the frequency is 10-20kHz.

9. The encircling self-cooling and anti-sand energy storage system for desert photovoltaic piles according to claim 1 is characterized in that: The natural convection heat transfer capacity of the energy storage system is: Where, is the natural convection heat transfer, is the convective heat transfer coefficient, is the heat transfer area, is the ambient temperature difference.

10. A method for installing a desert photovoltaic pile enveloping self-cooling and anti-sand energy storage system, based on the desert photovoltaic pile enveloping self-cooling and anti-sand energy storage system according to any one of claims 1 to 9, characterized in that: include: Install the hoop ring around the desert photovoltaic pile body and lock it with bolts or snap structures; The hoop is placed around the photovoltaic pile body, and the tightness of the hoop is adjusted to fit tightly with the photovoltaic pile body; The fan-shaped energy storage capsules are evenly arranged along the circular trajectory of the outer periphery of the hoop ring body, so that the inner connecting surface of each fan-shaped energy storage capsule fits in with the outer mounting surface of the hoop ring body, and the axis of the fan-shaped energy storage capsule is consistent with the radial direction of the hoop ring body; Place the detachable module at the connection between the fan-shaped energy storage cabin and the hoop ring body, align the magnetic locks on both sides of the module with the magnetic areas on the fan-shaped energy storage cabin and the hoop ring body, and push it along the guide groove until the magnetic locks are locked to complete the integration and fixation of the fan-shaped energy storage cabin and the hoop ring body.

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