Air-cooled energy storage all-in-one machine with good heat dissipation effect

Abstract

The application relates to the technical field of heat dissipation of energy storage equipment, and particularly provides a forced-air-cooled energy storage all-in-one machine with good heat dissipation effect, which comprises a cabinet and an energy storage electrical part; a battery module installation cabin is arranged in the inner cavity of the cabinet, a plurality of ventilation holes are arranged in the side wall of the battery module installation cabin in a rectangular array mode, the number of layers and the setting positions of the ventilation holes correspond to the number of layers of battery modules installed in the battery module installation cabin; the ventilation holes are communicated with a first air inlet channel, the first air inlet channel is communicated with a total air inlet channel; the total air inlet channel is used for being communicated with the cold air outlet of the cold air source of the forced-air-cooled energy storage all-in-one machine; the cabinet further comprises a first air return channel, one end of the first air return channel is communicated with the battery module installation cabin, and the other end is communicated with the air return port of the cold air source of the forced-air-cooled energy storage all-in-one machine; an air extractor is installed in the first air return channel. The application solves the problems that the heat dissipation effect of the traditional forced-air-cooled scheme is poor, and the heat dissipation of packs in different areas is uneven.

Description

Technical Field

[0001] This invention relates to the field of heat dissipation technology for energy storage devices, and specifically provides an integrated air-cooled energy storage unit with good heat dissipation effect. Background Technology

[0002] Driven by the "dual carbon" goal, the integrated, modular, and outdoor deployment of energy storage systems has become the mainstream of industry development. Integrated energy storage units, which integrate core components such as battery packs, energy storage converters (PCS), battery management systems (BMS), cooling systems, and fire protection systems into the same enclosure, have significantly reduced the complexity of on-site installation and the cost of subsequent operation and maintenance, making them the mainstream equipment for small and medium-sized energy storage scenarios.

[0003] In the selection of cooling systems, air-cooled systems have significant advantages over liquid-cooled systems, such as simple structure, low cost, convenient maintenance, and no risk of leakage. They are more suitable for low-to-medium power density energy storage scenarios and outdoor environments with limited operation and maintenance conditions. Therefore, they are most commonly used in small and medium-sized air-cooled energy storage units.

[0004] However, existing air-cooled energy storage units still suffer from four major technical pain points in practical engineering applications, which seriously restrict their performance improvement, application scenario expansion, and market promotion: Low heat dissipation efficiency and poor temperature uniformity: Traditional air-cooling solutions use a simple structure of "in-box fan and top / side ventilation". Airflow is prone to forming eddies and dead zones in the box, resulting in temperature differences of more than 5°C between different areas and cells of the battery pack. The charge and discharge performance, cycle life and safety performance of lithium-ion batteries are highly sensitive to temperature. Long-term temperature differences will accelerate the degradation of cell consistency and significantly increase the risk of battery thermal runaway.

[0005] There is an inherent contradiction between dustproof and waterproof requirements and heat dissipation requirements: energy storage units are mostly deployed outdoors and need to meet IP54 or higher protection levels to resist external corrosion such as dust, rain, and salt spray. However, improving the sealing performance of the enclosure will directly increase ventilation resistance and further reduce heat dissipation efficiency. Existing solutions cannot balance protection and heat dissipation and can only make performance compromises.

[0006] In summary, developing a new type of air-cooled energy storage unit with high heat dissipation efficiency, good temperature uniformity, and excellent protection performance will solve the core pain points of existing technologies and has significant practical significance and market value for the development of the energy storage equipment industry. Summary of the Invention

[0007] This invention provides an integrated air-cooled energy storage unit with good heat dissipation effect, which solves the problems of poor heat dissipation effect and uneven heat dissipation of packs in different areas in the existing technology.

[0008] This invention provides an integrated air-cooled energy storage unit with good heat dissipation performance, comprising: The cabinet and the energy storage electrical unit; the energy storage electrical unit is installed inside the cabinet; The cabinet cavity is provided with a battery module installation compartment. Multiple ventilation holes are arranged in a rectangular array on the side wall of the battery module installation compartment. The number of ventilation holes and their positions correspond to the number of battery module layers installed in the battery module installation compartment. The ventilation hole is connected to a first air inlet duct, and the first air inlet duct is connected to the main air inlet duct. The main air inlet duct is used to connect with the cold air outlet of the cold air source of the air-cooled energy storage unit. The cabinet also includes a first return air duct, one end of which is connected to the battery module installation compartment, and the other end is connected to the return air vent of the cold air source of the air-cooled energy storage unit. An exhaust fan is installed in the first return air duct.

[0009] According to the air-cooled energy storage integrated machine provided by the present invention, the battery module installation compartment has multiple compartments, and a first air inlet duct is provided between adjacent battery module installation compartments, and the multiple first air inlets are all connected to the main air inlet duct.

[0010] According to the air-cooled energy storage integrated machine provided by the present invention, the main air inlet duct is provided with multiple partitions, the partitions divide the inner cavity of the main air inlet duct into multiple air inlet channels, the number of air inlet channels is the same as the number of the first air inlet channels, and they are connected one-to-one.

[0011] According to the air-cooled energy storage integrated unit provided by the present invention, the energy storage electrical unit includes an energy storage converter; The cabinet is also provided with a second air intake duct, which is located next to the energy storage converter and is used to dissipate heat from the energy storage converter. The second air inlet duct is a straight channel structure, with a suction device at one end and an exhaust device at the other end. A water collection tank is provided below the exhaust device.

[0012] According to the air-cooled energy storage integrated unit provided by the present invention, the inner cavity of the cabinet further includes: a high-voltage compartment, a fire protection compartment, and an energy storage converter installation compartment.

[0013] According to the air-cooled energy storage integrated machine provided by the present invention, the top of the cabinet is provided with multiple lifting rings.

[0014] According to the air-cooled energy storage integrated machine provided by the present invention, slots are symmetrically arranged at the bottom of the cabinet.

[0015] The air-cooled energy storage integrated machine provided by the present invention further includes multiple temperature sensors and controllers, each of the temperature sensors being respectively disposed in the battery module installation compartment, the high-voltage box compartment, the fire protection compartment, and the energy storage converter installation compartment; Each of the temperature sensors is electrically connected to the controller.

[0016] The beneficial effects of this invention are: This invention provides an integrated air-cooled energy storage unit with excellent heat dissipation, specifically addressing the technical problems of poor heat dissipation and uneven heat dissipation among battery modules (packs) in existing air-cooling solutions. Through precise design of the cabinet air ducts, ventilation holes, and airflow circulation structure, it achieves a dual improvement in heat dissipation efficiency and temperature uniformity. Specifically: The rectangular array of ventilation holes on the side wall of the battery module installation compartment, with the number of layers / positions matching the battery modules, allows for precise and directional delivery of cool air to each battery module in each layer and position. This ensures that the cool air makes full and uniform contact with each battery module, effectively avoiding the airflow dead zones and eddies that occur in traditional air cooling. It solves the problem of uneven heat dissipation in different areas of the battery modules from the source, significantly reducing the temperature difference between battery modules and ensuring cell consistency.

[0017] The ventilation holes connect to the first air intake duct, which in turn forms a hierarchical air intake structure with the main air intake duct. This allows the cold air output from the cold air source to be evenly distributed to each ventilation hole through a regular air duct path, avoiding local loss or concentration of cold energy during the transportation process. This further ensures the balance of cold energy supply to each battery module and improves the overall uniformity of heat dissipation.

[0018] The first return air duct, combined with the airflow recirculation design of the exhaust fan, accelerates the exhaust and recirculation of hot air in the battery module installation compartment through the active exhaust action of the exhaust fan, so that the heat generated by the battery module can be quickly removed, significantly improving the overall heat dissipation efficiency; at the same time, the hot air flows back to the cold air source return air inlet in a directional manner, forming an orderly air-cooling cycle, realizing the recycling of cold energy, and further optimizing the heat dissipation effect.

[0019] The enclosed directional airflow circulation structure with overall air intake and return ensures a regular and controllable airflow path within the cabinet, reducing ineffective loss of cooling capacity and providing continuous and stable heat dissipation for the battery module. This effectively improves the operating temperature environment of the battery module, slows down cell consistency degradation, enhances the charging and discharging performance and cycle life of the battery module, and reduces the risk of battery thermal runaway.

[0020] The structured and matched design of the air duct and ventilation holes eliminates the need for additional complex heat dissipation components. While simplifying the overall heat dissipation structure, it improves the heat dissipation effect and uniformity, taking into account both the structural simplicity and heat dissipation practicality of the equipment, and reducing the production and maintenance costs of the equipment.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional structural diagram of the air-cooled energy storage integrated machine provided by the present invention; Figure 2 This is a three-dimensional structural diagram of the first air inlet duct and battery module mounting compartment provided by the present invention; Figure 3 This is a top view schematic diagram of the first air inlet duct arrangement structure provided by the present invention; Figure 4 This is a right-side view of the first air inlet duct arrangement structure provided by the present invention; Figure 5 This is a schematic diagram of the main structure of the air-cooled energy storage integrated machine provided by the present invention; Figure 6 This is a rear view structural diagram of the air-cooled energy storage integrated machine provided by the present invention; Figure 7 This is a right-side view of the second air inlet duct arrangement structure provided by the present invention.

[0024] Figure label: 1. Server rack; 2. Energy Storage Electrical Division; 201. Energy Storage Converter; 202. Battery Module; 3. Battery module mounting compartment; 301. Ventilation hole; 302. First air inlet duct; 303. Main air inlet duct; 3031. Partition; 304. First return air duct; 305. Second air inlet duct; 306. Air intake; 307. Exhaust fan; 308. Water collection tank; 4. Hanging rings; 5. Slots. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0026] This invention provides an integrated air-cooled energy storage unit with good heat dissipation performance, such as... Figures 1 to 7 As shown, it includes: Cabinet 1 and Energy Storage Electrical Unit 2 are integrated inside Cabinet 1. Energy Storage Electrical Unit 2 is the core component for realizing the energy storage function of the equipment. It mainly includes battery module 202 (pack), energy storage converter 201 (pcs), high voltage box, battery management system, etc.

[0027] A separate battery module mounting compartment 3 is provided inside the cabinet 1. This mounting compartment is a closed steel structure with anti-corrosion and insulation treatment on the inner wall. The dimensions of the compartment are designed according to the specifications of the battery module 202 to meet the standard installation requirements of the lithium iron phosphate battery module 202. Multiple ventilation holes 301 are machined on the side wall of the battery module mounting compartment 3. The ventilation holes 301 are arranged in a rectangular array. The number of layers and the horizontal position of the ventilation holes 301 correspond exactly to the number of layers of battery modules 202 installed in the battery module mounting compartment 3. This ensures that the heat dissipation surface of each layer of battery module 202 can be precisely aligned with the ventilation hole 301, and cool air can be directly blown to the core heat dissipation area of ​​the battery module 202.

[0028] The outer side of the ventilation hole 301 is connected to the first air inlet duct 302. The first air inlet duct 302 is a closed air duct formed by bending a hard cold-rolled steel plate. The cross-section of the air duct is square. The connection between the ventilation hole 301 and the first air inlet duct 302 is sealed to prevent cold air leakage. The other end of the first air inlet duct 302 is connected to the main air inlet duct 303. The main air inlet duct 303 is the main air intake channel in the cabinet 1. It is arranged vertically along the cabinet 1. The top of the main air inlet duct 303 is reserved for seamless connection with the cold air outlet of the cold air source of the air-cooled energy storage unit. The cold air source is an industrial air conditioner to provide continuous and stable cold air to the equipment. The cooling capacity of the industrial air conditioner is matched to the power requirements of the equipment at 2.1KW.

[0029] The cabinet 1 also features a first return air duct 304, which is also a closed steel structure duct. One end connects to the top of the battery module mounting compartment 3, and the other end extends to the return air inlet of the cold air source and connects with it, forming a circulation channel for cold air. An exhaust fan is fixedly installed inside the first return air duct 304. The exhaust fan is a centrifugal fan with a rated air volume of 360 CFM. When the exhaust fan is working, it can actively extract the hot airflow that has completed heat exchange with the battery in the battery module mounting compartment 3, and accelerate the hot airflow back to the cold air source along the first return air duct 304, realizing rapid airflow circulation within the battery module mounting compartment 3.

[0030] In practical applications, the battery module installation compartment 3 houses four layers of lithium iron phosphate battery modules 202, each with a capacity of 16kWh. Correspondingly, four layers of rectangular array ventilation holes 301 are machined on each of the two side walls of the battery module installation compartment 3, with eight ventilation holes 301 per layer. The diameter of the ventilation holes 301 is 30mm, the spacing between the holes is 50mm, and their horizontal arrangement is flush with the center heat dissipation surface of each layer of battery module 202. The first air inlet duct 302 has a cross-sectional dimension of 200mm×150mm, and the main air inlet duct 303 is made of galvanized steel pipe with a diameter of 300mm, which is connected to the cold air outlet of the 5P industrial air conditioner. The first return air duct 304 has a cross-sectional dimension of 250mm×200mm, and the centrifugal exhaust fan installed inside has a rated voltage of 380V and a rated air volume of 100CFM. The exhaust fan is linked to the industrial air conditioner for startup. Under this structure, the cold air in the battery module installation chamber 3 evenly covers each layer of battery module 202, with no dead air zones, and the temperature difference between battery modules 202 is ≤3℃.

[0031] The air-cooled energy storage integrated machine provided in the embodiments of the present invention, such as Figures 1 to 7 As shown, it includes: There are multiple battery module installation compartments 3, which can be flexibly set according to the power requirements of the air-cooled energy storage unit. Multiple battery module installation compartments 3 are arranged side by side along the horizontal direction of the cabinet 1. A first air inlet duct 302 is set in the gap between two adjacent battery module installation compartments 3. The side wall ventilation hole 301 of each battery module installation compartment 3 is individually connected to the adjacent first air inlet duct 302. The tops of all the first air inlets 302 converge and are connected to the main air inlet duct 303, ensuring that each first air inlet duct 302 can obtain cold air from the main air inlet duct 303, so as to realize independent and uniform cooling of multiple battery module installation compartments 3.

[0032] In practical applications, a 64kWh air-cooled energy storage unit is used, with two battery module installation compartments 3. Each compartment contains four layers of 16kWh lithium iron phosphate battery modules 202. The two compartments are arranged side-by-side along the width of the cabinet 1, with a 200mm gap between them. A first air inlet duct 302 is installed at this gap. Two more first air inlets 302 are installed on each side of the two battery module installation compartments 3, for a total of three first air inlets 302. The top of all the first air inlets 302 is connected to the main air inlet duct 303. The main air inlet duct 303 is made of galvanized steel pipe with a diameter of 400mm, which is connected to an 8P industrial air conditioner according to the cooling requirements. With this design, the cooling supply of the multiple battery module installation compartments 3 is balanced, and the temperature deviation of the battery modules 202 in each compartment is ≤2℃.

[0033] The air-cooled energy storage integrated machine provided in the embodiments of the present invention, such as Figures 1 to 7 As shown, it includes: Multiple baffles 3031 are fixedly installed inside the main air intake duct 303. The baffles 3031 are made of 1.5mm thick cold-rolled steel plates and are welded to the inner wall of the main air intake duct 303. The weld joints are sealed to prevent cold air from flowing back into the main air intake duct 303. The baffles 3031 divide the inner cavity of the main air intake duct 303 into multiple independent air intake channels. The number of air intake channels is exactly the same as the number of first air intake channels 302 in the cabinet 1. The top of each air intake channel is connected to the end of a first air intake channel 302. This allows the cold air in the main air intake duct 303 to be directionally delivered to the corresponding first air intake channel 302 through different air intake channels, avoiding uneven distribution of cold air between different first air intake channels 302 and further ensuring a consistent supply of cold air to each battery module mounting compartment 3.

[0034] In practical applications, the air-cooled energy storage unit adapted to 128kWh power is equipped with three first air inlets 302. Correspondingly, two partitions 3031 are installed within the main air inlet 303, dividing the inner cavity of the main air inlet 303 into three independent air inlet channels. Each air inlet channel has an equal cross-sectional area of ​​30,000 mm². The ends of the three air inlet channels are seamlessly connected to the tops of the three first air inlets 302, and the connection between the air inlets and the first air inlets 302 is sealed with flanges. With this structure, the cold air in the main air inlet 303 is evenly distributed to the three first air inlets 302, and the airflow deviation of each first air inlet 302 is ≤5%.

[0035] The air-cooled energy storage integrated machine provided in the embodiments of the present invention, such as Figures 1 to 7 As shown, it includes: The energy storage electrical unit 2 includes an energy storage converter 201, which is the core component for AC-DC conversion. During operation, it generates a large amount of heat. Therefore, a second air inlet duct 305 is separately opened in the cabinet 1. The second air inlet duct 305 is located next to the energy storage converter 201, and the extension direction of the air duct is parallel to the heat dissipation surface of the energy storage converter 201, which is specifically used to dissipate heat from the energy storage converter 201.

[0036] The second air intake duct 305 adopts a straight channel structure, spliced ​​from cold-rolled steel plates. The inner wall of the duct is insulated to reduce heat transfer to other areas within the cabinet 1. An air intake 306 is installed at one end of the second air intake duct 305. The air intake 306 is an axial flow fan with a rated airflow of 290 CFM, used to draw in ambient temperature air from outside the cabinet 1. This ambient temperature air is directly blown along the straight channel structure of the second air intake duct 305 to the heat dissipation surface of the energy storage converter 201, achieving forced air cooling. An exhaust fan 307 is installed at the other end of the second air intake duct 305. The exhaust fan 307 is a centrifugal exhaust fan with a rated airflow matched to that of the air intake 306, used to directly exhaust the hot airflow after heat exchange with the energy storage converter 201 to the outside of the cabinet 1, forming an independent air-cooling channel for the energy storage converter 201 and preventing the accumulation of hot airflow inside the cabinet 1.

[0037] A water collection tank 308 is fixedly installed below the exhaust fan 307. The water collection tank 308 is made of 304 stainless steel and has an open-top structure. The inside of the tank is waterproofed. A drain outlet is provided at the bottom of the water collection tank 308, and a drain pipe is connected to the drain outlet to extend to the outside of the cabinet 1. Because condensation easily occurs when the ambient air comes into contact with the hot surface of the energy storage converter 201, the water collection tank 308 can collect the condensate to prevent it from dripping onto the energy storage converter 201 or other electrical components inside the cabinet 1, which could cause a short circuit. The collected condensate can be discharged naturally through the drain outlet.

[0038] In practical applications, the energy storage converter 201 is a 50kW unit. Its second air inlet duct 305 is a straight channel 800mm long with a cross-sectional dimension of 150mm × 100mm. The suction fan 306 is a 220V axial flow fan with a rated airflow of 500m³ / h. The exhaust fan 307 is a centrifugal exhaust fan of the same specification. The water collection tank 308 is a 304 stainless steel tank 200mm long, 150mm wide, and 50mm high, with a 10mm diameter drain outlet. A 1m long PVC drain pipe extends to the bottom outside of the cabinet 1. With this structure, the operating temperature of the energy storage converter 201 can be controlled below 45℃, improving the cooling effect by 40% compared to traditional natural heat dissipation methods, and eliminating the risk of condensation dripping.

[0039] The air-cooled energy storage integrated machine provided in the embodiments of the present invention, such as Figures 1 to 7 As shown, it includes: In addition to the battery module installation compartment 3 and the energy storage converter 201 installation compartment, the inner cavity of the cabinet 1 is also divided into a high-voltage box compartment and a fire protection compartment. All compartments are independent, enclosed steel structure compartments, arranged in layers along the vertical direction of the cabinet 1. Each compartment is equipped with a heat insulation and insulation partition 3031 to avoid mutual interference between components during operation, and to facilitate the installation, inspection and maintenance of the equipment.

[0040] The high-voltage enclosure is located in the upper part of rack 1, where the high-voltage box is installed. The inner walls of the enclosure are insulated and protected against electric shock, and the doors are equipped with anti-accidental contact locks. The fire suppression compartment is located between the high-voltage enclosure and the battery module installation compartment 3. It houses an aerosol fire suppression system with its nozzles facing the battery module installation compartment 3 and the energy storage converter 201 installation compartment, providing fire protection for the core energy storage components within rack 1. The energy storage converter 201 installation compartment is located in a separate area on one side of rack 1, adjacent to the battery module installation compartment 3. The second air intake duct 305 extends directly into this compartment, providing dedicated cooling for the energy storage converter 201. The battery module installation compartment 3 is located in the lower part of rack 1 and is the main compartment within rack 1, accounting for more than 60% of the rack 1's internal volume. All compartment doors are sealed, and in conjunction with the overall sealing design of rack 1, meet the IP54 outdoor protection rating.

[0041] In practical applications, the cabinet 1 has external dimensions of 1300mm×1400mm×1900mm. Vertically, from top to bottom, it contains a high-voltage box compartment, a fire-fighting compartment, an energy storage converter 201 installation compartment, and a battery module installation compartment 3. The high-voltage box compartment has dimensions of 440mm×800mm×400mm and houses a high-voltage box with a rated voltage of 1000V. The fire-fighting compartment has dimensions of 440mm×800mm×400mm and houses a 4kg aerosol fire extinguishing device. The energy storage converter 201 installation compartment has dimensions of 500mm×600mm×120mm and houses a 50kW / 100kW energy storage converter 201. The remaining area is the battery module installation compartment 3, with dimensions suitable for the arrangement of 2-4 battery module installation compartments 3. Each compartment is separated by an 8mm thick insulating and heat-insulating partition 3031. The partition 3031 is made of glass fiber reinforced plastic and has both insulation and heat-insulating effects.

[0042] The air-cooled energy storage integrated machine provided in the embodiments of the present invention, such as Figures 1 to 7 As shown, it includes: Multiple lifting rings 4 are fixedly installed on the top of the cabinet. The lifting rings 4 are made of alloy steel, which has the characteristics of high strength and high load-bearing capacity. The number of lifting rings 4 is designed according to the size and load-bearing requirements of the cabinet 1, and they are symmetrically arranged along the four corners of the top of the cabinet to ensure that the cabinet is evenly stressed during hoisting. The lifting rings 4 are welded to the frame at the top of the cabinet, and the weld joints are reinforced with a weld leg height of ≥8mm. The rated load-bearing capacity of the lifting rings 4 is designed according to the total weight of the air-cooled energy storage unit, which meets the hoisting requirements under full load. No additional hoisting tools are required, and the cabinet 1 can be directly transferred in the air and hoisted on site by a crane.

[0043] In practical applications, four lifting rings (4) are installed at the four corners of the top of the cabinet, for a total of four lifting rings (4). These lifting rings (4) are forged from alloy steel, with a rated single-ring load capacity of ≥800kg and a combined load capacity of ≥2000kg, which can meet the hoisting requirements of a 128kWh air-cooled energy storage unit (total unit weight approximately 1500kg). The lifting rings (4) are welded to the channel steel frame at the top of the cabinet, using double-sided welding with a weld leg height of 10mm. After welding, anti-corrosion and anti-rust treatment is applied to extend the service life of the lifting rings (4).

[0044] The air-cooled energy storage integrated machine provided in the embodiments of the present invention, such as Figures 1 to 7 As shown, it includes: Slots 5 are symmetrically arranged at the bottom of the cabinet. Slots 5 are open-type slot structures welded from channel steel (standard 10# channel steel), providing sufficient structural strength. Two slots 5 are arranged along the length of the cabinet, one on each side of the bottom. The center-to-center distance between the two slots 5 is 800mm, perfectly matching the fork spacing of commonly used standard forklifts. Forklift forks can be directly inserted into the slots 5, enabling ground transport and short-distance movement of cabinet 1 without the need for additional welding of auxiliary fixtures at the bottom of the cabinet, thus meeting the forklift transport needs of the project site. The slots 5 are welded and fixed to the bottom frame of the cabinet, with reinforced welds to ensure the stability of cabinet 1 during forklift transport.

[0045] In practical applications, two symmetrical slots 5 are set at the bottom of the cabinet. Slots 5 are made of national standard 10# channel steel, bent into shape. The length of slot 5 is 1000mm, the width of the slot opening is 120mm, and the depth is 80mm. The center distance between the two slots 5 is 800mm, which matches the fork spacing of a 3T national standard forklift. The slots 5 are welded and fixed to the steel structure frame at the bottom of the cabinet. Triangular reinforcing plates are welded at the weld points. The triangular reinforcing plates are made of 6mm thick cold-rolled steel plates to improve the load-bearing capacity of slots 5, which can meet the forklift transportation needs under full load of the whole machine. There is no tilting or deformation of the cabinet during forklift transportation.

[0046] The air-cooled energy storage integrated machine provided in the embodiments of the present invention, such as Figures 1 to 7 As shown in This air-cooled energy storage integrated machine is also equipped with multiple temperature sensors and a controller. The temperature sensor selects a PT100 platinum thermal resistance temperature sensor, which has high temperature measurement accuracy, good stability, and a temperature measurement range of -20°C - 100°C, adapting to the working temperature monitoring requirements of each component in cabinet 1. The number of temperature sensors is set according to the number of cabins. Temperature sensors are separately installed in the battery module installation cabin 3, high-voltage box cabin, fire protection cabin, and the energy storage converter 201 installation cabin. The temperature sensors in each cabin are installed beside the core components to ensure accurate detection of the real-time temperature in each cabin.

[0047] All temperature sensors are electrically connected to the controller through wires. The controller selects a PLC programmable logic controller and is installed in the high-voltage box cabin. The controller is also electrically connected to heat dissipation components such as the cold air source, air extractor, air suction device 306, and air exhaust device 307 to achieve the linkage control of temperature signal acquisition and heat dissipation components. The temperature thresholds of each cabin are preset in the controller. When the temperature sensor in a certain cabin detects that the temperature exceeds the preset threshold, the controller will automatically send an instruction to increase the operating power of the corresponding heat dissipation component, increasing the cold air supply or ventilation volume; when the temperature drops below the threshold, the controller will automatically reduce the operating power of the heat dissipation component to achieve energy-saving operation. At the same time, the temperature sensor can real-time feedback the temperature of each cabin, facilitating the maintenance personnel to remotely monitor the operating status of the equipment.

[0048] Two PT100 platinum thermal resistance temperature sensors are installed in each of the 2 battery module installation cabins 3, and one such type of temperature sensor is installed in each of the high-voltage box cabin, fire protection cabin, and the energy storage converter 201 installation cabin, for a total of 7 temperature sensors; the controller selects a Siemens S7-200 SMART PLC controller. All temperature sensors are electrically connected to the controller through 485 communication lines. The controller is also electrically connected to the industrial air conditioner, air extractor, air suction device 306, and air exhaust device 307. The preset temperature threshold for the battery module installation cabin 3 is 40°C, the temperature threshold for the energy storage converter 201 installation cabin is 45°C, and the temperature threshold for the high-voltage box cabin is 35°C. When the temperature in the battery module installation cabin 3 exceeds 40°C, the controller automatically adjusts the cooling capacity of the industrial air conditioner to the maximum and simultaneously increases the rotation speed of the air extractor; when the temperature drops below 35°C, the controller automatically reduces the operating power of the industrial air conditioner and the air extractor to achieve intelligent temperature control and energy-saving operation.

[0049] In the above embodiments, through the above structural design, beneficial effects in many aspects are achieved: The ventilation holes 301 of the battery module installation compartment 3 are precisely corresponding to the number of layers of the battery module 202. Combined with the tiered air intake structure and the return air structure with exhaust fan, the battery module 202 can achieve uniform heat dissipation, completely solve the problem of uneven heat dissipation, reduce the temperature difference between battery modules 202, and improve the battery cycle life. Multiple battery module mounting compartments 3 correspond one-to-one with the first air inlet duct 302. The partition 3031 in the main air inlet duct 303 realizes the directional distribution of cold energy, further ensuring the balanced supply of cold energy and improving the heat dissipation uniformity under the multi-module layout. The independent straight-channel second air inlet duct 305 of the energy storage converter 201, together with the air intake 306, the exhaust fan 307 and the water collection tank 308, realizes forced air cooling of the energy storage converter 201, while avoiding condensation failure and improving the working stability of the core components. The functional compartments within rack 1 are arranged independently in layers, enabling partitioned installation and protection of components, facilitating inspection and maintenance, and meeting outdoor IP54 protection requirements. The design of the top lifting ring 4 and bottom slot 5 of the cabinet enables dual transfer by crane lifting and forklift transport, adapting to the complex transportation and installation conditions on the project site; Temperature sensors and controllers in each compartment work together to achieve real-time monitoring of temperature across the entire area and intelligent adjustment of heat dissipation components. This ensures effective heat dissipation while reducing energy consumption and improving the intelligence and energy efficiency of the equipment.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wind-cooled energy storage integrated machine with good heat dissipation effect, characterized in that, It includes a cabinet and an energy storage electrical unit; the energy storage electrical unit is installed inside the cabinet; The cabinet cavity is provided with a battery module installation compartment. Multiple ventilation holes are arranged in a rectangular array on the side wall of the battery module installation compartment. The number of ventilation holes and their positions correspond to the number of battery module layers installed in the battery module installation compartment. The ventilation hole is connected to a first air inlet duct, and the first air inlet duct is connected to the main air inlet duct. The main air inlet duct is used to connect with the cold air outlet of the cold air source of the air-cooled energy storage unit. The cabinet also includes a first return air duct, one end of which is connected to the battery module installation compartment, and the other end is connected to the return air vent of the cold air source of the air-cooled energy storage unit. An exhaust fan is installed in the first return air duct.

2. The air-cooled energy storage integrated machine according to claim 1, characterized in that, The battery module mounting compartment has multiple compartments, and the first air inlet duct is provided between adjacent battery module mounting compartments. All of the multiple first air inlets are connected to the main air inlet duct.

3. The air-cooled energy storage integrated machine according to claim 2, characterized in that, The main air intake duct is provided with multiple partitions, which divide the inner cavity of the main air intake duct into multiple air intake channels. The number of air intake channels is the same as the number of the first air intake channels, and they are connected one-to-one.

4. The air-cooled energy storage integrated machine according to claim 1, characterized in that, The energy storage electrical unit includes an energy storage converter; The cabinet is also provided with a second air intake duct, which is located next to the energy storage converter and is used to dissipate heat from the energy storage converter. The second air inlet duct is a straight channel structure, with a suction device at one end and an exhaust device at the other end. A water collection tank is provided below the exhaust device.

5. The air-cooled energy storage integrated machine according to claim 1, characterized in that, The cabinet's internal cavity also includes: a high-voltage compartment, a fire-fighting compartment, and an energy storage converter installation compartment.

6. The air-cooled energy storage integrated machine according to claim 1, characterized in that, The top of the cabinet is equipped with multiple hanging rings.

7. The air-cooled energy storage integrated machine according to claim 1, characterized in that, The bottom of the cabinet is symmetrically equipped with slots.

8. The air-cooled energy storage integrated machine according to claim 5, characterized in that, It also includes multiple temperature sensors and controllers, with each temperature sensor respectively located in the battery module installation compartment, the high-voltage box compartment, the fire protection compartment, and the energy storage converter installation compartment; Each of the temperature sensors is electrically connected to the controller.

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