Intelligent constant-pressure output energy storage cabin

Abstract

The utility model relates to an intelligent constant-voltage output energy storage cabin which comprises a cabin body, a PCS cabinet, a BMS cabinet, a control cabinet and a battery cabinet. The main purpose of the utility model is to center the battery cabinets at the two sides of the air pipe, when maintenance is needed, the batteries can be maintained or replaced only by opening the corresponding control room doors or side doors, so that the maintenance efficiency is improved, the overall structural design is reasonable, the outgoing lines of the battery cabinets are connected in parallel to the original transformer of a user through the PCS cabinet and the BMS cabinet, and the maintenance cost is reduced. The output power change of the power grid can be predicted by collecting historical monitoring data of the power grid, so that power output is prepared in advance, when the power failure of the power grid is detected, the control cabinet automatically cuts off the connection between the battery cabinet and the power grid, and the effects of intelligent scheduling, cooperative control and peak load shifting between the energy storage cabin and the power grid are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage cabins, and particularly relates to an energy storage cabin with intelligent constant voltage output. Background Technique

[0002] An energy storage cabin is an integrated energy storage device integrating an energy storage system, a battery management system, an energy conversion system and other devices. Usually, it has the appearance of a large container, and contains multiple battery modules, a heat dissipation module, a fire protection module, etc. inside. It can participate in power grid frequency modulation / voltage regulation as an independent power station, provide backup power, and cut peak and fill valley. At the same time, it can also cooperate with renewable energy power generation to increase the grid-connected power of renewable energy. And on the user side, it can conduct price arbitrage through peak-valley price differences and participate in demand-side response to obtain benefits.

[0003] Among them, the patent No. CN201920993820.3 discloses an isolated ventilation energy storage cabin, in which battery clusters are distributed on both sides of the energy storage cabin body. When it is necessary to maintain internal equipment or replace aging batteries, it is necessary to enter the compartment for operation, which is somewhat inconvenient. Summary of the Invention

[0004] In order to overcome the deficiencies of the background technique, the technical solution adopted by the utility model is: an energy storage cabin with intelligent constant voltage output, including a cabin body, a PCS cabinet, a BMS cabinet, a control cabinet and a battery cabinet. The cabin body is provided with a control room door, a side door and an air conditioner, and an air duct connected to the air conditioner is provided on the top of the cabin body, as well as a fire protection unit electrically connected to the control cabinet. The cabin body is provided with a partition, and a control room and an energy storage room are formed through the partition. The control room is provided with a PCS cabinet, a BMS cabinet and a control cabinet facing the control room door, and battery cabinets facing the side door direction are provided on both sides of the energy storage room close to the air duct. The control cabinet is electrically connected to the battery cabinet through the PCS cabinet and the BMS cabinet respectively.

[0005] The utility model is further arranged such that the cabin body includes a square steel frame, a sealing plate, a rock wool board and a corrugated board. The square steel frame is combined with the sealing plate, the control room door and the side door to form a box structure, and a rock wool board is connected to the inner sides of the sealing plate, the control room door and the side door, and a corrugated board is connected to the outer side of the sealing plate; the steel frame is formed by overlapping square steels, and the sealing plate and the steel frame are combined to form a cuboid box frame structure. The impact resistance of the box is improved by the corrugated board, and heat insulation is provided by the rock wool board to relieve the working pressure of the air conditioner and the exhaust fan.

[0006] The utility model is further arranged such that two groups of exhaust fans and protective plates distributed diagonally are provided on both sides of the control room. The protective plates are sleeved on the outside of the exhaust fans, and the openings of the protective plates face the ground direction; the diagonally distributed exhaust fans cause convection in the control room, and the protective plates are used to protect the exhaust fans to prevent foreign objects from getting stuck.

[0007] The present utility model is further configured such that lighting lamps are provided between the battery cabinet and the side door, and between the control cabinet and the control room door; an operating space is left between each power distribution cabinet and the hatch door, and the lighting lamp is provided above the operating space to facilitate the maintenance of the energy storage cabin at night.

[0008] The present utility model is further configured such that the fire protection unit includes a smoke sensor and a temperature sensor, and the smoke sensor and the temperature sensor are provided on the air duct; when the temperature in the energy storage room is too high or there is smoke, the control cabinet disconnects the circuits of all battery cabinets to protect the battery cabinets.

[0009] The present utility model is further configured such that threading pipes are provided at the top of the cabin body and are distributed perpendicular to each other, and the PCS cabinet / BMS cabinet / control cabinet / battery cabinet is provided with an outlet connected to the threading pipe; the threading pipe is provided inside the top of the cabin body for threading wires for electrical equipment such as air conditioners, lighting lamps, and sensors, protecting the connecting wires and improving the aesthetics inside the cabin.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. The battery cabinets are centered on both sides of the air duct. When maintenance is required, only the corresponding control room door or side door needs to be opened to repair or replace the battery, thereby improving the maintenance efficiency and the overall structural design is reasonable;

[0012] 2. An auxiliary air conditioner and an air duct are installed inside the cabin, and the temperature inside the cabin is detected by the fire protection unit, so that the temperature inside the cabin is intelligently adjusted to 10 - 30 °C, enabling the storage batteries in the battery cabinets to achieve the best operating efficiency. When the temperature inside the cabin is too high, the control cabinet controls the battery cabinets to cut off the power supply to avoid battery damage and prevent the occurrence of fires;

[0013] 3. The outgoing line of the battery cabinet passes through the PCS cabinet and the BMS cabinet in parallel to the user's original transformer. The historical monitoring data of the power grid can be collected to predict the change of the power grid output power, so as to prepare the power output in advance. When the power grid power failure is detected, the control cabinet automatically cuts off the connection between the battery cabinet and the power grid, achieving the functions of intelligent scheduling, coordinated control, and peak shaving and valley filling between the energy storage cabin and the power grid.

[0014] The following further describes the embodiments of the present utility model with reference to the accompanying drawings. Description of the Drawings

[0015] Figure 1 is a structural schematic diagram of the present utility model;

[0016] Figure 2 is a front view of the cabin body of the present utility model;

[0017] Figure 3 is a left view of the cabin body of the present utility model;

[0018] Figure 4 Structural schematic diagram of the structure with conduit distribution in the present utility model;

[0019] Wherein: 1 - cabin body, 2 - PCS cabinet, 3 - BMS cabinet, 4 - control cabinet, 5 - battery cabinet, 6 - air conditioner, 7 - fire protection unit, 8 - lighting lamp, 9 - conduit, 11 - control room door, 12 - side door, 13 - air duct, 14 - partition board, 15 - control room, 16 - energy storage room, 17 - square steel frame, 18 - sealing plate, 19 - rock wool board, 20 - corrugated board, 21 - exhaust fan, 22 - protection plate; Specific implementation manner

[0020] As Figure 1 shown, this embodiment provides an energy storage cabin with intelligent constant voltage output, including cabin body 1, PCS cabinet 2, BMS cabinet 3, control cabinet 4 and battery cabinet 5. The cabin body 1 is provided with a control room door 11, a side door 12 and an air conditioner 6, and an air duct 13 connected to the air conditioner 6 is provided at the top of the cabin body 1, and a fire protection unit 7 electrically connected to the control cabinet 4. The cabin body 1 is provided with a partition board 14, and a control room 15 and an energy storage room 16 are formed through the partition board 14. The control room 15 is provided with a PCS cabinet 2, a BMS cabinet 3 and a control cabinet 4 facing the control room door 11. The battery cabinets 5 are provided on both sides of the energy storage room 16 close to the air duct 13 and face the side door 12. The control cabinet 4 is electrically connected to the battery cabinets 5 through the PCS cabinet 2 and the BMS cabinet 3 respectively.

[0021] Combined with Figure 2 shown, in this embodiment, the cabin body 1 includes a square steel frame 17, a sealing plate 18, a rock wool board 19 and a corrugated board 20. The square steel frame 17 is combined with the sealing plate 18, the control room door 11 and the side door 12 to form a box structure, and a rock wool board 19 is connected to the inner sides of the sealing plate 18, the control room door 11 and the side door 12, and a corrugated board 20 is connected to the outer side of the sealing plate 18; the steel frame is formed by overlapping 100x100mm square steel, and the sealing plate 18 and the steel frame are combined into a cuboid box frame structure of 6000x2500x2880mm. A 50mm thick rock wool board 19 is installed on both the bottom sealing plate 18 and the inner side of the door panel, and a double-layer 50mm thick rock wool board 19 is installed inside the top sealing plate 18. The impact resistance of the box is improved by the corrugated board 20, and heat insulation is carried out by the rock wool board 19 to relieve the working pressure of the air conditioner 6 and the exhaust fan 21.

[0022] Combined with Figure 3 shown, in this embodiment, two groups of exhaust fans 21 and protection plates 22 distributed diagonally are provided on both sides of the control room 15. The protection plate 22 is sleeved outside the exhaust fan 21, and the opening of the protection plate 22 faces the ground direction; the diagonally distributed exhaust fans 21 cause convection to be formed in the control room 15, and the protection plate 22 is used to protect the exhaust fan 21 to prevent foreign objects from getting stuck.

[0023] In this embodiment, lighting lamps 8 are provided between the battery cabinet 5 and the side door 12, and between the control cabinet 4 and the control room door 11; an operating space is left between each power distribution cabinet and the hatch door. The lighting lamp 8 is an LED explosion-proof square lamp to facilitate the maintenance of the energy storage cabin at night.

[0024] In this embodiment, the fire protection unit 7 includes a smoke sensor and a temperature sensor, which are arranged on the air duct 13; when the temperature in the energy storage room 16 is too high or there is smoke, the control cabinet 4 disconnects the circuits of all battery cabinets 5 to protect the battery cabinets 5.

[0025] Combined with Figure 4 As shown, in this embodiment, threading pipes 8 are provided at the top of the cabin body 1 and are perpendicularly distributed to each other. The PCS cabinet 2 / BMS cabinet 3 / control cabinet 4 / battery cabinet 5 are provided with wire outlets connected to the threading pipes 8; the threading pipes 8 are plastic wire grooves and are all installed on the top of the cabin body 1 for threading and protecting the connecting wires, improving the aesthetics inside the cabin body 1.

[0026] The working principle of the present utility model is that the outgoing lines of the battery cabinet 5 respectively pass through the PCS cabinet 2 and the BMS cabinet 3 and are connected in parallel to the user's original transformer. According to the determination of the peak, high, and valley power consumption periods by the background monitoring, the control cabinet 4 conducts intelligent scheduling. During the peak power period, the battery cabinet 5 is inverted into alternating current and supplies power through the PCS cabinet 2, and the insufficient part is supplemented by the commercial power; during the high power period, the power load is provided by the power grid, and the battery cabinet 5 neither charges nor discharges; during the valley power period, the commercial power is used to charge the storage batteries in the battery cabinet 5 through the BMS cabinet 3, so as to achieve the effect of peak shaving and valley filling, improve the energy utilization efficiency, and promote energy transformation and sustainable development.

[0027] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. An energy storage cabin with intelligent constant pressure output, characterized in that: The invention comprises a cabin (1), a PCS cabinet (2), a BMS cabinet (3), a control cabinet (4) and a battery cabinet (5); the cabin (1) is provided with a control room door (11), a side door (12) and an air conditioner (6); the top of the cabin (1) is provided with an air duct (13) connected to the air conditioner (6), and a fire fighting unit (7) electrically connected to the control cabinet (4); the cabin (1) is provided with a partition (14), and a control room (15) and an energy storage room (16) are formed by the partition (14); the control room (15) is provided with a PCS cabinet (2), a BMS cabinet (3) and a control cabinet (4) whose front faces face the control room door (11); battery cabinets (5) whose front faces face the side door (12) are provided on both sides of the energy storage room (16) close to the air duct (13); and the control cabinet (4) is electrically connected to the battery cabinet (5) through the PCS cabinet (2) and the BMS cabinet (3) respectively.

2. According to claim 1, the energy storage cabin with intelligent constant pressure output is characterized in that: The cabin body (1) comprises a square steel frame (17), a sealing plate (18), a rock wool board (19) and a corrugated board (20); the square steel frame (17) is combined into a box structure through the sealing plate (18), a control room door (11) and a side door (12); the inner sides of the sealing plate (18), the control room door (11) and the side door (12) are connected to the rock wool board (19), and the outer sides of the sealing plate (18) are connected to the corrugated board (20).

3. The energy storage cabin with intelligent constant pressure output according to claim 2 is characterized in that: Two groups of diagonally distributed exhaust fans (21) and protective plates (22) are provided on both sides of the control room (15); the protective plates (22) are sleeved on the outside of the exhaust fans (21), and the openings of the protective plates (22) face toward the ground.

4. The energy storage cabin with intelligent constant pressure output according to claim 1, characterized in that: Illuminating lamps (8) are provided between the battery cabinet (5) and the side door (12) and between the control cabinet (4) and the control room door (11).

5. The energy storage cabin with intelligent constant pressure output according to claim 1, characterized in that: The fire fighting unit (7) comprises a smoke sensor and a temperature sensor, and the smoke sensor and the temperature sensor are arranged on the air duct (13).

6. The energy storage cabin with intelligent constant pressure output according to claim 1, characterized in that: The top of the cabin (1) is provided with threading tubes (9) which are vertically distributed to each other, and the PCS cabinet (2) / BMS cabinet (3) / control cabinet (4) / battery cabinet (5) is provided with a wire outlet connected to the threading tubes (9).

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