Air-cooled distributed energy storage cabinet

Abstract

The invention 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 invention, an isobaric cold air distribution structure and an air guide plate are arranged, so that the air pressure at the left, middle and right sides of the battery rack is consistent, and the air inlet amount 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] The present invention relates to the field of energy storage, and in particular to an air-cooled distributed energy storage cabinet. Background Art

[0002] With the national dual carbon goals and the reform of user-side electricity prices, the peak-valley price difference has gradually widened. Enterprises are in urgent need of shaving peaks and filling valleys and reducing energy costs. The construction of user-side energy storage projects can bring great benefits to enterprises and reduce energy costs. Especially in the case of high-load electricity consumption in summer, energy storage equipment can achieve a certain degree of peak-shifting electricity consumption and effectively alleviate the power supply pressure during peak hours of the power grid. Compared with centralized energy storage power stations, distributed energy storage has the advantages of high power utilization, high flexibility, high reliability, and flexible layout. It is widely used in various industrial and commercial scenarios. Compared with the layout of centralized power stations, distributed energy storage is generally arranged in open scenarios such as large-scale industry and commerce, photovoltaic storage charging stations, and distributed photovoltaic distribution storage, which puts higher requirements on its safety to ensure the safety of equipment and personnel.

[0003] The existing air-cooled distributed energy storage cabinet has a large temperature difference between the cells, which leads to inconsistent attenuation at different positions of the same battery cluster. Due to the short board effect of the battery, the performance of the battery system is always consistent with the worst cell. Therefore, the aggravated attenuation of the battery system caused by poor temperature control in the air-cooled distributed energy storage cabinet is an urgent problem to be solved in the current air-cooled energy storage cabinet. Summary of the invention

[0004] In order to solve the problems of the prior art, the present invention provides an air-cooled distributed energy storage cabinet.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: An air-cooled distributed energy storage cabinet comprises: an energy storage cabinet, wherein a front air conditioning vent is arranged on the upper front side of a front door of the energy storage cabinet, and a rear air conditioning vent is arranged on the upper rear side of a rear door of the energy storage cabinet; a front PCS vent is arranged on the lower front side of the front door of the energy storage cabinet, and a rear PCS vent is arranged on the lower rear side of the rear door of the energy storage cabinet; An industrial air conditioner is fixedly installed on the top of the energy storage cabinet, a battery chamber is arranged at the lower part of the industrial air conditioner, a plurality of battery plug-ins are arranged in the battery chamber, and the battery plug-ins are distributed in the battery chamber from top to bottom; Two rows of battery boxes are arranged, and an air duct 1 is formed between adjacent battery boxes, an air duct 2 is formed between one group of battery boxes and the inner wall of the energy storage cabinet, and an air duct 3 is formed between another group of battery boxes and the inner wall of the energy storage cabinet; An air duct is arranged at the front side of the battery plug box, and a fan is fixedly arranged in the battery plug box, and the fan is located at the front side of the battery plug box; An air guide plate assembly is arranged at the rear side of the battery plug box, 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 plug box. The air deflector assembly includes: The first air guide plate is in a "∧" shape, and the bottom of the first air guide plate is fixed to the upper end of a group of battery plug boxes; The second air guide plate is in an oblique "∧" shape, and the bottom of the second air guide plate is fixed to the upper end of the battery plug box on the other side; The air guide plate three is a plate-shaped structure, which is fixed to one side of the upper part of the battery plug-in box.

[0006] A horizontal plate is arranged between the industrial air conditioner and the battery chamber, and an air duct opening 1 and an air duct opening 2 are arranged on the horizontal plate. The air duct opening 1 corresponds to the air inlet of the industrial air conditioner, and the air duct opening 2 corresponds to the air outlet of the industrial air conditioner.

[0007] The hot air in the battery chamber enters the air inlet of the industrial air conditioner through the first air duct opening, and the cold air discharged from the air outlet of the industrial air conditioner enters the battery plug-in box through the second air duct opening.

[0008] A partition is arranged at the lower part of the transverse plate, and the partition is vertically fixed in the battery chamber.

[0009] The two side walls of the battery box are penetrated to form a battery box air inlet, and the battery box air inlet is composed of a plurality of circular holes distributed from top to bottom.

[0010] The energy storage cabinet is provided with a fire protection system. The fire protection system includes: The fire main water pipe is located inside the energy storage cabinet and is vertically upward; The fire sprinkler is fixed on the upper part of the fire main water pipe. The fire sprinkler is connected to the fire main water pipe. A fire internal thread joint is arranged between the fire main water pipe and the fire sprinkler. The fire-fighting main water pipe is connected to the fire-fighting sprinkler through a fire-fighting internal thread joint; The lower part of the fire main water pipe is connected with the corrugated hose, and the corrugated hose is connected with an external water pipe inlet.

[0011] Compared with the prior art, the invention has the following beneficial effects: the invention adjusts the internal layout of the air-cooled distributed energy storage cabinet, greatly improving the utilization rate of the space. The air-cooled distributed energy storage cabinet is equipped with an isobaric cold air distribution structure and an air guide plate, and the temperature difference can be well controlled; the air-cooled distributed energy storage cabinet is equipped with a fire protection system to prevent re-ignition and prevent the spread of accidents; the application ability of the distributed energy storage cabinet in the field of industrial and commercial energy storage is improved, and the stability of the equipment and the convenience of maintenance are improved.

[0012] 1. The present invention adjusts the layout of components and adopts a top-mounted industrial air conditioner, industrial air conditioner, battery plug The upper and lower boxes are arranged, which greatly improves the utilization of space. The floor space is no more than 1.5m². The standard modular design can easily realize decentralized deployment, flexible access combination expansion, and multiple machines can be connected in parallel to more than 20 units to meet the personalized use needs of customers; 2. The present invention is equipped with an isobaric cold air distribution structure and an air guide plate to ensure that the wind pressure on the left, middle and right sides of the battery rack is consistent, thereby ensuring that the air intake volume of each battery box remains consistent, thereby ensuring the consistency of the working environment temperature of the battery cell; 3. The present invention enables distributed energy storage to suppress re-ignition through battery cluster-level water firefighting. When a fire occurs, the fire water valve is started, and the fire water passes through the water flow switch and the fire main water pipe. A fire sprinkler is configured at the end of the battery cluster water fire pipe. The fire sprinkler sprays fire water and reaches the battery cluster. The fire water cools down the battery system to avoid re-ignition, thereby achieving battery cluster-level water firefighting. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Other features, objectives and advantages of the present invention will become more apparent from a reading of the detailed description of non-limiting embodiments made with reference to the following accompanying drawings.

[0014] Figure 1 It is a main structural schematic diagram of the present invention.

[0015] Figure 2 It is a rear view structural schematic diagram of the present invention.

[0016] Figure 3 It is a schematic diagram of the internal structure of the present invention.

[0017] Figure 4 It is a schematic diagram of the side sectional structure of the present invention.

[0018] Figure 5 It is a schematic diagram of the internal side structure of the present invention.

[0019] Figure 6 It is a schematic diagram of the internal rear view structure of the present invention.

[0020] Figure 7 It is a schematic diagram of the structure of the present invention.

[0021] Among them: 100, energy storage cabinet; 1001, sensor; 110, front air conditioning vent; 120, rear air conditioning vent; 130, front PCS vent; 140, rear PCS vent; 200, industrial air conditioner; 210, battery chamber; 211, horizontal plate; 2111, air duct opening 1; 2112, air duct opening 2; 220, battery plug-in box; 230, partition; 210, battery chamber; 300, high-voltage box; 400, AC control box; 500, energy storage converter; 600, air guide plate assembly; 610, guide Wind plate one; 620, wind guide plate two; 611, 1# cold air distribution cabin entrance; 621, 2# cold air distribution cabin entrance; 631, 3# cold air distribution cabin; 630, wind guide plate three; 221, fan; 222, air duct; 2200, battery box air inlet; 2201, air duct one; 2202, air duct two; 2203, air duct three; 700, fire protection system; 710, fire protection water main; 720, fire sprinkler; 721, fire protection internal thread connector; 730, corrugated hose; 731, water pipe access port. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below by examples, which are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0023] A wind-cooled distributed energy storage cabinet comprises: an energy storage cabinet 100, wherein the front door and the rear door of the energy storage cabinet 100 are both provided with ventilation holes, a front air conditioning ventilation hole 110 is arranged on the front side of the upper part of the front door of the energy storage cabinet 100, and a rear air conditioning ventilation hole 120 is arranged on the upper rear side of the rear door of the energy storage cabinet 100; a front PCS ventilation hole 130 is arranged on the front side of the lower part of the front door of the energy storage cabinet 100, and a rear PCS ventilation hole 140 is arranged 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; An industrial air conditioner 200 is fixedly installed on the top of the energy storage cabinet 100. The overhead industrial air conditioner 200 is installed at the upper end of the energy storage cabinet 100. The industrial air conditioner 200 adopts the front air flow and rear air discharge method to realize the external circulation of heat. The energy storage cabinet 100 is equipped with an overhead industrial air conditioner 200, which is used to dissipate heat from the battery plug box 220 to ensure the stable operation of the battery system. A battery chamber 210 is arranged in the lower part of the industrial air conditioner 200. A plurality of battery plug boxes 220 are arranged in the battery chamber 210. The battery plug boxes 220 are distributed in the battery chamber 210 from top to bottom. A high-voltage box 300 and an AC control box 400 are arranged in the lower part of the battery chamber 210. An energy storage inverter 500 is arranged in the lower part of the AC control box 400. The battery plug boxes 220 are symmetrically arranged to facilitate weight balance, which greatly improves the utilization rate of space. 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 divided by the horizontal plate 211. An air duct opening 1 2111 and an air duct opening 2112 are provided on the horizontal plate 211. The air duct opening 1 2111 corresponds to the air inlet of the industrial air conditioner 200, and the air duct opening 2112 corresponds to the air outlet of the industrial air conditioner 200. The hot air in the battery chamber 210 enters the air inlet of the industrial air conditioner 200 through the air duct opening 1 2111 , and the cold air discharged from the air outlet of the industrial air conditioner 200 enters the battery plug box 220 through the air duct opening 2112 .

[0024] A partition 230 is provided at the lower part of the transverse plate 211, and the partition 230 is vertically fixed in the battery chamber 210. The partition 230 is fixed to the area between the battery plug box 220 and the energy storage cabinet 100 and the transverse plate 211; at the same time, the partition 230 is fixed to the area between adjacent battery plug boxes 220; the top of the upper partition 230 is vertically fixedly connected to the lower part of the transverse plate 211, and the bottom end of the upper partition 230 is fixed to the upper part of the battery plug box 220, and the partition 230 isolates the hot air and the cold air in the battery chamber 210.

[0025] The air guide plate assembly 600 is disposed at the rear side of the battery plug box 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 plug box 220. The battery boxes 220 are arranged in two rows, and an air duct 1 2201 is formed between adjacent battery boxes 220 , an air duct 2202 is formed between one group of battery boxes 220 and the inner wall of the energy storage cabinet 100 , and an air duct 3 2203 is formed between another group of battery boxes 220 and the inner wall of the energy storage cabinet 100 ; The air guide plate assembly 600 includes: The air guide plate 1 610 is in a "∧" shape, and the bottom of the air guide plate 1 610 is fixed to the upper end of a group of battery plug boxes 220; one side of the air guide plate 1 610 and the inner wall of the energy storage cabinet 100 form a 1# cold air distribution cabin entrance 611; the 1# cold air distribution cabin entrance 611 corresponds to the second air duct 2202; The second air guide plate 620 is in an oblique "∧" shape, and the bottom of the second air guide plate 620 is fixed to the upper end of the battery plug box 220 on the other side; the other side of the first air guide plate 610 and the one side of the second air guide plate 620 form a 2# cold air distribution cabin entrance 621; the 2# cold air distribution cabin entrance 621 corresponds to the first air duct 2201; The wind deflector plate 3 630 is a plate-shaped structure, which is fixed to one side of the upper part of the battery plug box 220; the other side of the wind deflector plate 2 620 and one side of the wind deflector plate 3 630 form a 3# cold air distribution cabin 631; the 3# cold air distribution cabin 631 corresponds to the air duct 3 2203; the energy storage cabinet 100 is provided with a wind deflector assembly 600 on the top of the battery plug box 220 to guide the cold air while ensuring the wind pressure. This effectively solves the problem of low temperature at the front of the battery box during long-term operation.

[0026] The cold air discharged from the air outlet of the industrial air conditioner 200 enters the second air duct 2202 through the inlet 611 of the first cold air distribution cabin, and then enters the battery plug box 220; The cold air discharged from the air outlet of the industrial air conditioner 200 enters into the air duct 1 2201 through the 2# cold air distribution cabin entrance 621, and the cold air discharged from the air outlet of the industrial air conditioner 200 enters into the air duct 3 2203 through the 3# cold air distribution cabin entrance 631. The cold air enters into the battery plug-in box 220 from the air duct, forming equal pressure uniform wind in the battery plug-in box 220.

[0027] An air duct 222 is provided at the front side of the battery box 220. A fan 221 is fixedly provided inside the battery box 220. The fan 221 is located at the front side of the battery box 220. The wind blown out by the fan 221 passes through the air duct 222 and enters the air duct opening 1 2111. The battery box 220 has two side walls through which the battery box air inlets 2200 are formed. The battery box air inlets 2200 are provided in multiple groups, and the battery box air inlets 2200 are composed of multiple circular holes distributed from top to bottom ( Figure 5 )。 The wind (gas) passing through the air duct 1 2201, the air duct 2 2202 and the air duct 3 2203 enters the battery plug box 220 through the battery plug box air inlet 2200, and then is discharged into the air duct 222 through the fan 221. The battery plug box air inlet 2200 opened through the side wall of the battery plug box 220 serves as a gas exchange channel. The gas passing through the air duct 1 2201, the air duct 2 2202 and the air duct 3 2203 enters the battery plug box 220 through the battery plug box air inlet 2200. Because the battery plug box 220 is fed with air from both sides, the wind entering the battery plug box 220 from the air duct 1 2201 and the air duct 2 2202 enters from both sides of the battery plug box 220. At this time, because the wind directions of the wind entering the battery plug box 220 are opposite, the two winds form equal pressure and uniform wind in the battery plug box 220. Then the wind (gas) is discharged into the air duct 222 through the fan 221, and the isobaric cold air distribution structure is configured at the bottom of the industrial air conditioner 200 to ensure consistent wind pressure on the left, middle and right sides of the battery rack, thereby ensuring that the air intake volume of each battery plug box 220 remains consistent, thereby ensuring the consistency of the working environment temperature of the battery cell.

[0028] A fire protection system 700 is provided in the energy storage cabinet 100. Fire protection system 700 includes: The fire main water pipe 710 is located inside the energy storage cabinet 100 and is vertically upward. The fire main water pipe 710 adopts a DN20 six-branch pipe, and the flow rate of the fire water is 26L / min. The water consumption required for flooding the entire battery cluster is about 900L, and the time required is about 35 minutes, so as to realize battery cluster-level water fire fighting and prevent the accident from spreading.

[0029] The fire sprinkler 720 is fixed on the upper part of the fire main water pipe 710. The fire sprinkler 720 is connected to the fire main water pipe 710. A fire internal thread joint 721 is arranged between the fire main water pipe 710 and the fire sprinkler 720. The fire main water pipe 710 is preferably connected to the fire sprinkler 720 through the fire internal thread joint 721. The bellows hose 730 is connected to the lower part of the fire main water pipe 710, and the bellows hose 730 is connected to the external water pipe inlet 731; When in use, the energy storage cabinet 100 is powered on, and the EMS (energy management system) obtains data from the sensor 1001 to determine whether the alarm condition is met. If not, the alarm state is canceled, and if met, a first-level alarm is issued. The sensor 1001 is set on the front door of the energy storage cabinet 100; When the system has a level 1 alarm, the control system of the energy storage cabinet 100 sends a signal to start the exhaust fan (not shown) to exhaust the combustible gas in the energy storage cabinet 100 and perform a switch trip operation at the same time; When a level 2 alarm is triggered, the control system sends a signal to start the external fire water valve of the energy storage cabinet 100. The fire water passes through the water flow switch and the fire main water pipe 710 to reach the high end of the battery cluster. A fire sprinkler 720 is arranged at the end of the fire main water pipe 710 at the high position of the battery cluster. The fire water reaches the battery cluster and cools down the battery system to avoid re-ignition, thus achieving water firefighting at the battery cluster level.

[0030] The industrial air conditioner 200 is arranged at the upper end of the energy storage cabinet 100, with air flowing in from the front and out from the back, to achieve external circulation of heat in an air-cooling mode. The present invention distributes cold air at equal pressure between the industrial air conditioner 200 and the battery plug box 220 to ensure consistent wind pressure on the left, middle and right sides of the battery rack, thereby ensuring that the air intake of each battery box remains consistent, and further ensuring the consistency of the working environment temperature of the battery cell. In addition, an air guide plate assembly 600 is provided in the energy storage cabinet 100; an air duct 222 is provided at the position corresponding to the fan 221, so as to facilitate guiding the hot air coming out of the fan 221 to go upward and be transferred to the industrial air conditioner 200. The battery cluster is in a closed space. When the temperature of the battery cluster reaches a certain value, the EMS issues a command, and the fan 221 and the industrial air conditioner 200 in the battery box 220 start working. The fan 221 extracts the high-temperature air in the battery box 220, and a large amount of hot air is transferred upward to the industrial air conditioner 200 along the air duct 222 in the energy storage cabinet 100. The industrial air conditioner 200 discharges the hot air to the outside of the energy storage cabinet 100 through heat exchange, and discharges the cold air to the battery cluster. The cold air is transferred downward to the battery box 220 along the isobaric cold air distribution structure and the air guide plate of the air duct in the energy storage cabinet 100. In addition, the fan 221 in the battery box 220 draws air strongly, forming an air duct cycle, which promptly removes the heat generated by the battery cell, achieves the effect of uniform wind and temperature, and can effectively control the temperature difference to ensure the stable operation of the energy storage system.

[0031] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicate orientations or positional relationships of devices or equipment during normal use, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention in this regard.

[0032] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. An air-cooled distributed energy storage cabinet, characterized in that: include: Energy storage cabinet, front air conditioning vents are provided on the upper front side of the front door of the energy storage cabinet, and rear air conditioning vents are provided on the upper rear side of the rear door of the energy storage cabinet; front PCS vents are provided on the lower front side of the front door of the energy storage cabinet, and rear PCS vents are provided on the lower rear side of the rear door of the energy storage cabinet; An industrial air conditioner is fixedly installed on the top of the energy storage cabinet, a battery chamber is arranged at the lower part of the industrial air conditioner, a plurality of battery plug-ins are arranged in the battery chamber, and the battery plug-ins are distributed in the battery chamber from top to bottom; Two rows of battery boxes are arranged, and an air duct 1 is formed between adjacent battery boxes, an air duct 2 is formed between one group of battery boxes and the inner wall of the energy storage cabinet, and an air duct 3 is formed between another group of battery boxes and the inner wall of the energy storage cabinet; An air duct is arranged at the front side of the battery plug box, and a fan is fixedly arranged in the battery plug box, and the fan is located at the front side of the battery plug box; An air guide plate assembly is arranged at the rear side of the battery plug box, 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 plug box. The air deflector assembly includes: The first air guide plate is in a "∧" shape, and the bottom of the first air guide plate is fixed to the upper end of a group of battery plug boxes; The second air guide plate is in an oblique "∧" shape, and the bottom of the second air guide plate is fixed to the upper end of the battery plug box on the other side; The air guide plate three is a plate-shaped structure, which is fixed to one side of the upper part of the battery plug-in box.

2. The air-cooled distributed energy storage cabinet according to claim 1, characterized in that: A horizontal plate is arranged between the industrial air conditioner and the battery chamber, and an air duct opening 1 and an air duct opening 2 are arranged on the horizontal plate. The air duct opening 1 corresponds to the air inlet of the industrial air conditioner, and the air duct opening 2 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 in the battery chamber enters the air inlet of the industrial air conditioner through the first air duct opening, and the cold air discharged from the air outlet of the industrial air conditioner enters the battery plug-in box through the second air duct opening.

4. The air-cooled distributed energy storage cabinet according to claim 2, characterized in that: A partition is arranged at the lower part of the transverse plate, and the partition is vertically fixed in the battery chamber.

5. The air-cooled distributed energy storage cabinet according to claim 4, characterized in that: The battery box air inlets are formed through both side walls of the battery box, and the battery box air inlets are composed of a plurality of circular 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 provided with a fire protection system, including: The fire main water pipe is located inside the energy storage cabinet and is vertically upward; The fire sprinkler is fixed on the upper part of the fire main water pipe. The fire sprinkler is connected to the fire main water pipe. A fire internal thread joint is arranged between the fire main water pipe and the fire sprinkler.

7. The air-cooled distributed energy storage cabinet according to claim 6, characterized in that: The fire-fighting main water pipe is connected to the fire-fighting sprinkler through a fire-fighting internal thread joint; The lower part of the fire main water pipe is connected with the corrugated hose, and the corrugated hose is connected with an external water pipe inlet.

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