Air-cooled distributed energy storage cabinet

Abstract

The utility model relates to the field of energy storage, in particular to an air-cooled distributed energy storage cabinet. A front air-conditioning vent hole is formed in the front side of the upper part of the energy storage cabinet front door, and a rear air-conditioning vent hole is formed in the rear side of the upper part of the energy storage cabinet rear door; an industrial air conditioner is fixedly arranged at the top in the energy storage cabinet, a battery cavity is formed in the lower portion in the industrial air conditioner, and a plurality of battery plug-in boxes are arranged in the battery cavity and distributed in the battery cavity from top to bottom. The front side of the battery plug-in box is provided with an air duct, and a fan is fixedly arranged in the battery plug-in box and located in front of the battery plug-in box. According to the utility model, an isobaric cold air distribution structure and an air deflector are arranged, so that the wind pressure at the left side, the middle side and the right side of the battery rack is consistent, and therefore, the air inlet quantity of each battery box is kept consistent; and the consistency of the working environment temperature of the battery cell is ensured.

Description

Technical Field

[0001] This utility model relates to the field of energy storage, specifically to an air-cooled distributed energy storage cabinet. Background Technology

[0002] Compared to centralized energy storage power stations, distributed energy storage has advantages such as high power utilization, high flexibility, high reliability, and flexible layout, and is widely used in various industrial and commercial scenarios. Since distributed energy storage is generally deployed in open scenarios such as large industrial and commercial buildings, photovoltaic-storage charging stations, and distributed photovoltaic distribution and storage, higher requirements are placed on its safety to ensure the safety of equipment and personnel.

[0003] Existing air-cooled distributed energy storage cabinets suffer from excessive temperature differences between battery cells, leading to inconsistent degradation rates at different locations within the same battery cluster. Due to the bottleneck effect, the performance of the battery system always matches that of the worst-performing cell. Therefore, the accelerated battery degradation caused by poor temperature control in air-cooled distributed energy storage cabinets is a pressing issue that needs to be addressed. Summary of the Invention

[0004] To address the problems of existing technologies, this utility model provides an air-cooled distributed energy storage cabinet.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A wind-cooled distributed energy storage cabinet includes: an energy storage cabinet, a front air conditioning ventilation hole provided on the upper front side of the front door of the energy storage cabinet, a rear air conditioning ventilation hole provided on the upper rear side of the rear door of the energy storage cabinet; a front PCS ventilation hole provided on the lower front side of the front door of the energy storage cabinet, and a rear PCS ventilation hole provided on the lower rear side of the rear door of the energy storage cabinet.

[0007] An industrial air conditioner is fixedly installed at the top of the energy storage cabinet. A battery chamber is located in the lower part of the industrial air conditioner. Multiple battery boxes are installed in the battery chamber, and the battery boxes are distributed from top to bottom in the battery chamber.

[0008] The battery compartments are arranged in two rows. The adjacent battery compartments form an air passage duct one, one set of battery compartments forms an air passage duct two between them and the inner wall of the energy storage cabinet, and the other set of battery compartments forms an air passage duct three between them and the inner wall of the energy storage cabinet.

[0009] An air duct is provided on the front side of the battery compartment, and a fan is fixedly installed inside the battery compartment, with the fan located on the front side of the battery compartment.

[0010] An air guide plate assembly is installed at the rear of the battery compartment. The front side of the air guide plate assembly is fixedly connected to the rear side of the partition, and the bottom of the air guide plate assembly is fixed to the upper part of the battery compartment.

[0011] The air guide plate assembly includes:

[0012] Air guide plate one, in the shape of "∧", is fixed at the bottom of a set of battery boxes;

[0013] The second air guide plate is shaped like an angled "∧". The bottom of the second air guide plate is fixed to the upper end of the battery compartment on the other side.

[0014] The third air guide plate is a plate-shaped structure that is fixed to one side of the upper part of the battery compartment.

[0015] A horizontal plate is installed between the industrial air conditioner and the battery chamber. The horizontal plate has two air duct openings: air duct opening one corresponds to the air inlet of the industrial air conditioner, and air duct opening two corresponds to the air outlet of the industrial air conditioner.

[0016] The hot air inside the battery chamber enters the air inlet of the industrial air conditioner through air duct one, and the cold air discharged from the air outlet of the industrial air conditioner enters the battery compartment through air duct two.

[0017] A partition is provided at the lower part of the horizontal plate, and the partition is vertically fixed inside the battery cavity.

[0018] Both sides of the battery compartment have through-holes for air inlets, which are composed of multiple round holes distributed from top to bottom.

[0019] The energy storage cabinet is equipped with a fire protection system.

[0020] Fire protection systems include:

[0021] The main fire water pipe is located inside the energy storage cabinet and extends vertically upwards.

[0022] Fire sprinklers are fixed to the upper part of the main fire water pipe and are connected to it. A fire-fighting threaded connector is installed between the main fire water pipe and the fire sprinkler.

[0023] The main fire water pipe is connected to the fire sprinkler head via a fire internal threaded connector;

[0024] The corrugated hose is connected to the lower part of the main fire water pipe, and the corrugated hose is connected to the external water pipe inlet.

[0025] Compared with existing technologies, the advantages of this utility model are: The internal layout of the air-cooled distributed energy storage cabinet is adjusted, greatly improving space utilization. The air-cooled distributed energy storage cabinet is equipped with an isobaric cold air distribution structure and air guide plates, resulting in effective temperature difference control; it also features a fire suppression system to prevent reignition and the spread of accidents; and it enhances the application capabilities of distributed energy storage cabinets in industrial and commercial energy storage fields, improving equipment stability and ease of maintenance.

[0026] This utility model adjusts the component layout and adopts a top-mounted industrial air conditioner, including an industrial air conditioner and a battery plug.

[0027] The vertical arrangement of the units greatly improves space utilization. The footprint is no more than 1.5m². The standard modular design allows for easy distributed deployment, flexible access and expansion, and parallel connection of more than 20 units to meet individual customer needs.

[0028] 2. This utility model is equipped with an isobaric cold air distribution structure and an air guide plate to ensure that the air pressure is consistent on the left, middle and right sides of the battery rack, thereby ensuring that the air intake of each battery box is consistent, and thus ensuring the consistency of the working environment temperature of the battery cells.

[0029] 3. This utility model enables distributed energy storage to suppress reignition through battery cluster-level water fire suppression. When a fire occurs, the fire water valve is activated, and the fire water flows through the flow switch and the main fire water pipe. At the end of the battery cluster water fire suppression pipe, there are fire sprinklers that spray fire water and reach the battery cluster. The fire water cools the battery system and prevents reignition, thus achieving battery cluster-level water fire suppression. Attached Figure Description

[0030] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0031] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0032] Figure 2 This is a schematic diagram of the rear view structure of this utility model.

[0033] Figure 3 This is a schematic diagram of the internal structure of this utility model.

[0034] Figure 4 This is a side sectional view of the present invention.

[0035] Figure 5 This is a schematic diagram of the internal side view structure of this utility model.

[0036] Figure 6 This is a schematic diagram of the internal rear view structure of this utility model.

[0037] Figure 7 This is a schematic diagram of the structure of this utility model.

[0038] Among them: 100, Energy Storage Cabinet; 1001, Sensor; 110, Front Air Conditioning Ventilation Hole; 120, Rear Air Conditioning Ventilation Hole; 130, Front PCS Ventilation Hole; 140, Rear PCS Ventilation Hole; 200, Industrial Air Conditioner; 210, Battery Chamber; 211, Horizontal Plate; 2111, Air Duct Opening 1; 2112, Air Duct Opening 2; 220, Battery Box; 230, Partition Plate; 210, Battery Chamber; 300, High Voltage Box; 400, AC Control Box; 500, Energy Storage Converter; 600, Air Guide Plate Assembly; 610, Air Guide... Air guide plate 1; 620, Air guide plate 2; 611, No. 1 cold air distribution compartment inlet; 621, No. 2 cold air distribution compartment inlet; 631, No. 3 cold air distribution compartment; 630, Air guide plate 3; 221, Fan; 222, Air duct; 2200, Battery box air inlet; 2201, Air duct 1; 2202, Air duct 2; 2203, Air duct 3; 700, Fire protection system; 710, Fire main water pipe; 720, Fire sprinkler head; 721, Fire internal threaded connector; 730, Corrugated hose; 731, Water pipe inlet. Detailed Implementation

[0039] The present invention will be further described in detail below through embodiments. The embodiments are only used to illustrate the present invention and do not limit the scope of the present invention.

[0040] A wind-cooled distributed energy storage cabinet includes: an energy storage cabinet 100, with ventilation holes added to both the front and rear doors; a front air conditioning ventilation hole 110 is provided on the upper front side of the front door of the energy storage cabinet 100, and a rear air conditioning ventilation hole 120 is provided on the upper rear side of the rear door of the energy storage cabinet 100; a front PCS ventilation hole 130 is provided on the lower front side of the front door of the energy storage cabinet 100, and a rear PCS ventilation hole 140 is provided on the lower rear side of the rear door of the energy storage cabinet 100; the front air conditioning ventilation hole 110 is an air inlet, and the rear air conditioning ventilation hole 120 is an air outlet;

[0041] An industrial air conditioner 200 is fixedly installed at the top inside the energy storage cabinet 100. The top-mounted industrial air conditioner 200 is installed at the upper part of the energy storage cabinet 100, and uses a front-in, rear-out airflow method to achieve external heat circulation. The energy storage cabinet 100 is equipped with a top-mounted industrial air conditioner 200 to dissipate heat from the battery packs 220, ensuring the stable operation of the battery system. A battery chamber 210 is located at the lower part of the industrial air conditioner 200. Multiple battery packs 220 are installed in the battery chamber 210, distributed from top to bottom. A high-voltage box 300 and an AC control box 400 are located below the battery chamber 210, and an energy storage converter 500 is located below the AC control box 400. The symmetrical arrangement of the battery packs 220 facilitates weight distribution and greatly improves space utilization.

[0042] A horizontal plate 211 is provided between the industrial air conditioner 200 and the battery chamber 210, and the industrial air conditioner 200 and the battery chamber 210 are separated by the horizontal plate 211. The horizontal plate 211 is provided with air duct opening one 2111 and air duct opening two 2112. Air duct opening one 2111 corresponds to the air inlet of the industrial air conditioner 200, and air duct opening two 2112 corresponds to the air outlet of the industrial air conditioner 200.

[0043] Hot air in the battery chamber 210 enters the air inlet of the industrial air conditioner 200 through air duct 1 2111, and cold air discharged from the air outlet of the industrial air conditioner 200 enters the battery compartment 220 through air duct 2112.

[0044] A partition 230 is provided at the lower part of the horizontal plate 211. The partition 230 is vertically fixed inside the battery chamber 210 and is fixed in the area between the battery box 220, the energy storage cabinet 100, and the horizontal plate 211. At the same time, the partition 230 is fixed in the area between adjacent battery boxes 220. The top of the upper partition 230 is vertically fixed to the lower part of the horizontal plate 211, and the bottom of the upper partition 230 is fixed to the upper part of the battery box 220. The partition 230 isolates the hot air and cold air in the battery chamber 210.

[0045] An air guide plate assembly 600 is installed on the rear side of the battery compartment 220. The front side of the air guide plate assembly 600 is fixedly connected to the rear side of the partition 230, and the bottom of the air guide plate assembly 600 is fixed to the upper part of the battery compartment 220.

[0046] The battery pack 220 is arranged in two rows. An air passage duct 1 2201 is formed between adjacent battery packs 220. An air passage duct 2202 is formed between one group of battery packs 220 and the inner wall of the energy storage cabinet 100. An air passage duct 3 2203 is formed between the other group of battery packs 220 and the inner wall of the energy storage cabinet 100.

[0047] The air guide plate assembly 600 includes:

[0048] The air guide plate 610 is in the shape of "∧". The bottom of the air guide plate 610 is fixed to the upper end of a set of battery boxes 220. One side of the air guide plate 610 forms a No. 1 cold air distribution compartment inlet 611 with the inner wall of the energy storage cabinet 100. The No. 1 cold air distribution compartment inlet 611 corresponds to the air passage 2202.

[0049] The second air guide plate 620 is shaped like an oblique "∧". The bottom of the second air guide plate 620 is fixed to the upper end of the battery box 220 on the other side. The other side of the first air guide plate 610 and the first side of the second air guide plate 620 form the No. 2 cold air distribution chamber inlet 621. The No. 2 cold air distribution chamber inlet 621 corresponds to the first air passage 2201.

[0050] Air guide plate 3 630 is a plate-shaped structure fixed to one side of the upper part of the battery box 220; the other side of air guide plate 2 620 and one side of air guide plate 3 630 form the No. 3 cold air distribution chamber 631; the No. 3 cold air distribution chamber 631 corresponds to the air passage 3 2203; the energy storage cabinet 100 adds an air guide plate assembly 600 on the top of the battery box 220 to guide the cold air while ensuring air pressure.

[0051] It effectively solves the problem of low temperature at the front of the battery box during long-term operation.

[0052] The cold air discharged from the air outlet of the industrial air conditioner 200 enters the air duct 2202 through the inlet 611 of the No. 1 cold air distribution compartment, and then enters the battery box 220.

[0053] The cold air discharged from the air outlet of the industrial air conditioner 200 enters the air passage 2201 through the inlet 621 of the No. 2 cold air distribution chamber, and enters the air passage 3 2203 through the No. 3 cold air distribution chamber 631. The cold air enters the battery box 220 from the air passage, forming an equal pressure uniform airflow in the battery box 220.

[0054] A duct 222 is provided on the front side of the battery compartment 220, and a fan 221 is fixedly installed inside the battery compartment 220. The fan 221 is located on the front side of the battery compartment 220; the air blown out by the fan 221 enters the duct opening 2111 through the duct 222.

[0055] The battery compartment 220 has through-holes 2200 on both sides of its side walls; there are multiple sets of battery compartment air inlets 2200, which are composed of multiple round holes distributed from top to bottom. Figure 5 The air (gas) passing through air duct 1 2201, air duct 2202, and air duct 3 2203 enters the battery compartment 220 through the air inlet 2200, and then is discharged into the air duct 222 by the fan 221. The air inlet 2200, which is opened through the side wall of the battery compartment 220, serves as a gas exchange channel. The gas passing through air duct 1 2201, air duct 2202, and air duct 3 2203 enters the battery compartment 220 through the air inlet 2200. Because the battery compartment 220 has air intakes on both sides, the air entering the battery compartment 220 from air duct 1 2201 and air duct 2202 enters from both sides of the battery compartment 220. At this time, because the airflow directions entering the battery compartment 220 are opposite, the two airflows form an equal pressure uniform airflow in the battery compartment 220. Then the air (gas) is discharged into the air duct 222 through the fan 221. The equal pressure cold air distribution structure configured at the bottom of the industrial air conditioner 200 ensures that the air pressure on the left, middle and right sides of the battery rack is consistent, thereby ensuring that the air intake of each battery box 220 is consistent, and thus ensuring the consistency of the working environment temperature of the battery cells.

[0056] A 700-meter fire suppression system is installed inside the 100-meter energy storage cabinet.

[0057] Fire protection system 700 includes:

[0058] The main fire water pipe 710 is located inside the energy storage cabinet 100 and is vertically upward. The main fire water pipe 710 uses a DN20 six-point pipe, and the flow rate of the fire water is 26L / min. The water required for flooding the entire battery cluster is about 900L, and the time required is about 35 minutes, which realizes battery cluster-level water fire protection and prevents the spread of accidents.

[0059] Fire sprinkler 720 is fixed to the upper part of fire main water pipe 710. Fire sprinkler 720 is connected to fire main water pipe 710. Fire internal thread connector 721 is provided between fire main water pipe 710 and fire sprinkler 720. The fire main water pipe 710 is connected to fire sprinkler 720 through fire internal thread connector 721.

[0060] The corrugated hose 730 is connected to the lower part of the main fire water pipe 710, and the corrugated hose 730 is connected to the external water pipe inlet 731.

[0061] When in use, the energy storage cabinet 100 is powered on. The EMS (Energy Management System) obtains data from the sensor 1001 and determines whether the alarm conditions have been met. If the conditions are not met, the alarm is canceled. If the conditions are met, a level one alarm is triggered. The sensor 1001 is located on the front door of the energy storage cabinet 100.

[0062] When a Level 1 alarm occurs in the system, the control system of the energy storage cabinet 100 sends a signal to start the exhaust fan (not shown in the figure) to discharge the combustible gas in the energy storage cabinet 100, and at the same time performs a switch trip operation.

[0063] When a level 2 alarm is triggered, the control system sends a signal to activate the external fire water valve of the energy storage cabinet 100. The fire water flows through the flow switch and the main fire water pipe 710 to the high end of the battery cluster. At the end of the main fire water pipe 710 at the high position of the battery cluster, there is a fire sprinkler 720. The fire water reaches the battery cluster and cools the battery system to prevent reignition, thus achieving battery cluster-level water fire protection.

[0064] An industrial air conditioner 200 is positioned at the top of the energy storage cabinet 100, with air entering at the front and exiting at the rear, using a wind-cooled mode to achieve external heat circulation. This invention employs isobaric cold air distribution between the industrial air conditioner 200 and the battery compartment 220 to ensure consistent air pressure across the left, center, and right sides of the battery rack, thereby guaranteeing consistent airflow into each battery compartment and consequently ensuring consistent operating temperature of the battery cells. Furthermore, an air guide assembly 600 is installed within the energy storage cabinet 100; an air duct 222 is located at the position corresponding to the fan 221 to guide the hot air exiting the fan 221 upwards and transfer it to the industrial air conditioner 200. The battery cluster is in a sealed space. After the battery cluster temperature reaches a certain value, the EMS sends a command, and the fan 221 and industrial air conditioner 200 in the battery box 220 start to work. The fan 221 draws out the hot air in the battery box 220. A large amount of hot air is transferred upward along the air duct 222 in the energy storage cabinet 100 to the industrial air conditioner 200. The industrial air conditioner 200, through heat exchange, exhausts the hot air to the outside of the energy storage cabinet 100 and exhausts the cold air to the battery cluster. The cold air is transferred downward along the isobaric cold air distribution structure and air guide plate in the air duct of the energy storage cabinet 100 to the battery box 220. In addition, the fan 221 in the battery box 220 strongly exhausts the air, forming an air duct circulation, which promptly removes the heat generated by the battery cells, achieving the effect of uniform airflow and temperature. This can effectively control the temperature difference and ensure the stable operation of the energy storage system.

[0065] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship of the device or equipment during normal use, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model in this respect.

[0066] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A wind-cooled distributed energy storage cabinet, characterized in that, include: The energy storage cabinet has a front air conditioning ventilation hole on the upper front side of the front door and a rear air conditioning ventilation hole on the upper rear side of the rear door; a front PCS ventilation hole on the lower front side of the front door and a rear PCS ventilation hole on the lower rear side of the rear door. An industrial air conditioner is fixedly installed at the top of the energy storage cabinet. A battery chamber is located in the lower part of the industrial air conditioner. Multiple battery boxes are installed in the battery chamber, and the battery boxes are distributed from top to bottom in the battery chamber. The battery compartments are arranged in two rows. The adjacent battery compartments form an air passage duct one, one set of battery compartments forms an air passage duct two between them and the inner wall of the energy storage cabinet, and the other set of battery compartments forms an air passage duct three between them and the inner wall of the energy storage cabinet. An air duct is provided on the front side of the battery compartment, and a fan is fixedly installed inside the battery compartment, with the fan located on the front side of the battery compartment. An air guide plate assembly is installed at the rear of the battery compartment. The front side of the air guide plate assembly is fixedly connected to the rear side of the partition, and the bottom of the air guide plate assembly is fixed to the upper part of the battery compartment. The air guide plate assembly includes: Air guide plate one, in the shape of "∧", is fixed at the bottom of a set of battery boxes; The second air guide plate is slanted "∧" shaped, and its bottom is fixed to the upper end of the battery compartment on the other side. The third air guide plate is a plate-shaped structure that is fixed to one side of the upper part of the battery compartment.

2. The air-cooled distributed energy storage cabinet according to claim 1, characterized in that, A horizontal plate is installed between the industrial air conditioner and the battery chamber. The horizontal plate has two air duct openings: air duct opening one corresponds to the air inlet of the industrial air conditioner, and air duct opening two corresponds to the air outlet of the industrial air conditioner.

3. The air-cooled distributed energy storage cabinet according to claim 1, characterized in that, The hot air inside the battery chamber enters the air inlet of the industrial air conditioner through air duct one, and the cold air discharged from the air outlet of the industrial air conditioner enters the battery compartment through air duct two.

4. The air-cooled distributed energy storage cabinet according to claim 2, characterized in that, A partition is provided at the lower part of the horizontal plate, and the partition is vertically fixed inside the battery cavity.

5. The air-cooled distributed energy storage cabinet according to claim 4, characterized in that, Both sides of the battery compartment have through-holes for air inlets, which are composed of multiple round holes distributed from top to bottom.

6. The air-cooled distributed energy storage cabinet according to claim 5, characterized in that, The energy storage cabinet is equipped with a fire protection system, including: The main fire water pipe is located inside the energy storage cabinet and extends vertically upwards. Fire sprinklers are fixed to the upper part of the main fire water pipe. The fire sprinklers are connected to the main fire water pipe, and a fire-fighting internal threaded connector is installed between the main fire water pipe and the fire sprinklers.

7. The air-cooled distributed energy storage cabinet according to claim 6, characterized in that, The main fire water pipe is connected to the fire sprinkler head via a fire internal threaded connector; The corrugated hose is connected to the lower part of the main fire water pipe, and the corrugated hose is connected to the external water pipe inlet.

Images