Energy storage power supply cabinet

Abstract

The utility model discloses an energy storage power supply cabinet, which relates to the technical field of energy storage power equipment, and is characterized in that the top surface of a cabinet body is provided with a transverse heat dissipation air inlet channel, and the heat dissipation air inlet channel is positioned between the highest battery module and the top surface; a vertical air guide channel is formed between the rear part of the battery module and the rear side wall of the cabinet body; the refrigeration air conditioner arranged on the cabinet door exhausts refrigeration air, the air guide cover sends the cold air exhausted by the refrigeration air conditioner to the heat dissipation air inlet channel, airflow flows from top to bottom through the air guide channel and is sent to the air inlets in the rear portions of the battery modules, the cold air passes through the interior of the battery modules to be subjected to heat exchange, and the battery modules are cooled. After heat is absorbed, hot air is exhausted from an air outlet in the front of the battery module, and enters a heat exhaust port of the refrigeration air conditioner from the space between the battery module and the cabinet door; in the whole air flowing process, the cold air entering the cabinet body and the hot air after heat exchange are mutually independent to form a relatively isolated circulation path for flowing, so that the cold air is prevented from being mixed with the hot air, and the heat of the cold air is fully utilized.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage power equipment, and further relates to an energy storage power supply cabinet. Background Art

[0002] With the rapid development of renewable energy, energy storage power supply cabinets are becoming increasingly widespread in fields such as photovoltaics and wind power, becoming key equipment for promoting the absorption of new energy. Energy storage power supply cabinets can provide capacity support and peak load shifting for solar or traditional power plants, generating power generation revenue and peak load regulation subsidies, and providing emergency / uninterruptible power supply for industry, commerce, and communities.

[0003] Energy storage power cabinets contain components such as battery modules and control modules, which generate heat during operation. To prevent heat accumulation, heat dissipation is necessary. Traditionally, this has been achieved through air cooling. Air conditioners are installed throughout the energy storage power cabinet, and cooling fans are installed on each battery module. The air conditioners blow cool air into the cabinet, but the airflow is unrestricted. This can cause the incoming cool air to mix with the hot air exhausted from the battery modules, preventing the cool air from fully achieving its cooling effect.

[0004] For those skilled in the art, how to prevent the incoming cold air from mixing with the exhausted hot air is a technical problem that needs to be solved at present. Utility Model Content

[0005] The core of this utility model is to provide an energy storage power supply cabinet. The newly incoming cold air does not come into contact with the hot air after absorbing heat, so that the cold air can fully play its role of absorbing heat and cooling, thereby improving energy utilization. The specific scheme is as follows:

[0006] An energy storage power supply cabinet includes a cabinet body, wherein a battery module is placed inside the cabinet body; a horizontal heat dissipation air inlet duct is provided between the top surface of the cabinet body and the highest battery module; a vertical air guide channel is formed between the rear of the battery module and the rear side wall of the cabinet body, and the top of the air guide channel is connected to the heat dissipation air inlet duct;

[0007] The cabinet body is provided with a cabinet door, on which a refrigeration air conditioner is installed; an air guide cover is provided between the cold air outlet of the refrigeration air conditioner and the heat dissipation air inlet duct;

[0008] Among them, the air guide cover is used to send the cold air discharged by the refrigeration air conditioner to the heat dissipation air inlet duct, and the air flow is sent to the air inlet at the rear of each battery module through the air guide channel. The air outlet at the front of each battery module is used to discharge hot air and enter the heat exhaust port of the refrigeration air conditioner from between the battery module and the cabinet door.

[0009] Optionally, the inlet end of the air guide cover is fixed to the refrigeration air conditioner, and the outlet end is pressed onto the end of the heat dissipation air inlet duct.

[0010] Optionally, the cross-sectional area of ​​the inlet end of the air guide cover is larger than the cross-sectional area of ​​the outlet end; the slope of the top surface of the air guide cover is smaller than the slope of the bottom surface, so that the height of the outlet end of the air guide cover is higher than the height of the inlet end.

[0011] Optionally, a support is mounted on the external surface of the cabinet, and an adapter is mounted on the inverter, and the adapter cooperates with the support to suspend and fix the inverter;

[0012] The inverter is located on one side of the cabinet where the electrical components are located.

[0013] Optionally, a blasting device is provided on the surface of the cabinet, and the blasting device can blast the surface of the cabinet to form a pressure relief zone.

[0014] Optionally, the blasting device is installed on the top surface of the cabinet, directly above the battery module.

[0015] Optionally, a fire extinguishing device is installed on the top of the cabinet, and the fire extinguishing device is triggered by electrical drive or thermal drive.

[0016] Optionally, fire detectors are installed on the top of the cabinet, including optical smoke detectors, constant temperature heat detectors, carbon monoxide detectors and hydrogen detectors.

[0017] Optionally, it also includes an energy management module, which is configured to, upon receiving a fault signal from a single detector, shut down the refrigeration air conditioner and disconnect the AC power supply; upon receiving a fault signal from two or more detectors, activate the fire extinguishing device; and upon receiving a fault signal from the detector that exceeds a set threshold, activate the blasting device.

[0018] The utility model provides an energy storage power supply cabinet, wherein battery modules are placed inside the cabinet, and a horizontal heat dissipation air inlet duct is arranged on the top surface of the cabinet, and the heat dissipation air inlet duct is located between the highest battery module and the top surface; a vertical air guide channel is formed between the rear of the battery module and the rear side wall of the cabinet, a refrigeration air-conditioner is arranged on the cabinet door, and an air guide cover is arranged between the cold air exhaust port of the refrigeration air-conditioner and the heat dissipation air inlet duct; the refrigeration air-conditioner discharges refrigerated air, and the air guide cover sends the cold air discharged by the refrigeration air-conditioner to the heat dissipation air inlet duct, and the air flow is made to flow from top to bottom through the air guide channel and sent to the air inlet at the rear of each battery module, the cold air exchanges heat through the interior of each battery module, and after absorbing heat, the hot air is discharged from the air outlet at the front of the battery module and enters the heat exhaust port of the refrigeration air-conditioner between the battery module and the cabinet door; during the entire air flow process, the cold air entering the cabinet and the hot air after heat exchange are independent of each other, forming a relatively isolated circulation path flow, avoiding the mixing of cold air and hot air, and making full use of the heat of the cold air. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a first-perspective axonometric view of the energy storage power supply cabinet of the present invention with its door open;

[0021] Figure 2 This is a second perspective axonometric drawing of the energy storage power supply cabinet of the present invention with the door open;

[0022] Figure 3 This is a front view of the energy storage power supply cabinet of the present invention with its door open;

[0023] Figure 4 This is a rear view of the energy storage power supply cabinet of the present invention with its door open;

[0024] Figure 5 A top view of the energy storage power supply cabinet of the present invention with its door open;

[0025] Figure 6 is a schematic diagram of the airflow direction;

[0026] Figure 7 This is the axonometric drawing of the air scoop;

[0027] Figure 8 It is the front view of the air guide cover;

[0028] Figure 9 This is the axonometric drawing of the support;

[0029] Figure 10 This is a flow chart for when a fire occurs.

[0030] The diagram includes:

[0031] Cabinet body 1, cabinet door 11, heat dissipation air inlet duct 12, support 13, blasting device 14, fire extinguishing device 15, adapter 16, fire detector 17, battery module 2, electrical components 3, refrigeration and air conditioning 4, cold air exhaust port 41, heat exhaust port 42, air guide cover 5. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the energy storage power supply cabinet of the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0033] The utility model provides an energy storage power supply cabinet, combined with Figure 1 、 Figure 2 、 Figure 3 As shown, the energy storage power supply cabinet includes a cabinet body 1, a cabinet door 11, a refrigeration air conditioner 4, an air guide cover 5 and other structures. The cabinet body 1 serves as the main load-bearing structure, and equipment such as battery modules 2 and electrical components 3 can be placed inside the cabinet body 1. The cabinet body 1 has a top surface, a bottom surface, left and right side walls and a rear side wall. Partitions and partitions can be set in the space enclosed by the top, bottom, left, right and rear parts to separate and form a number of small spaces for placing equipment. An openable cabinet door 11 is set at the front of the cabinet body 1. The cabinet door 11 is installed on the cabinet body 1 by a hinge and can be opened and closed. The cabinet body 1 is made of sheet metal made of metal material, and a lifting ring can be set on the top of the cabinet body 1 to facilitate lifting and transportation.

[0034] The battery module 2 is placed inside the cabinet 1. Multiple battery modules 2 can be stacked and arranged inside the cabinet 1. Each battery module 2 is placed on a compartment of the cabinet 1. Figure 1 As shown, seven battery modules 2 are arranged in a vertically stacked manner. The battery modules 2 generate heat when in use, and need to be cooled by the refrigeration air conditioner 4 to reduce the temperature of the battery modules 2.

[0035] A horizontal heat dissipation air inlet duct 12 is provided between the top surface of the cabinet 1 and the highest battery module 2, that is, the heat dissipation air inlet duct 12 is located at the highest point inside the cabinet 1. There is a gap between the rear of the battery module 2 and the rear side wall of the cabinet 1, thereby forming a vertical air guide channel between the rear of the battery module 2 and the rear side wall of the cabinet 1. The top of the air guide channel is connected to the heat dissipation air inlet duct 12, and the air guide channel and the heat dissipation air inlet duct 12 together form an inverted "L"-shaped channel space. Air flowing through the heat dissipation air inlet duct 12 can enter the air guide channel. When in use, air entering from the front flows backward along the heat dissipation air inlet duct 12 and flows from top to bottom along the air guide channel.

[0036] The cabinet body 1 is provided with a cabinet door 11. When the cabinet door 11 is opened, the equipment inside can be disassembled, maintained, and repaired. The cabinet door 11 remains closed during normal use. A refrigeration air conditioner 4 is provided on the cabinet door 11. The refrigeration air conditioner 4 can supply cold air to the cabinet body 1 and discharge hot air to the outside. An air guide hood 5 is provided between the cold air outlet 41 of the refrigeration air conditioner 4 and the heat dissipation air inlet duct 12. The air guide hood 5 is a pipe structure with two ends through which air can enter and exit. Only the two ends can be used for air inlet and outlet. The solid parts around it are used to guide the airflow so that the air flows from the inlet end of the air guide hood 5 to the outlet end.

[0037] The inlet end of the air guide cover 5 is connected to the cold air outlet 41 of the refrigeration and air conditioning 4, and the outlet end of the air guide cover 5 is connected to the heat dissipation air inlet 12. The air guide cover 5 is used to send the cold air discharged by the refrigeration and air conditioning 4 to the heat dissipation air inlet 12. Due to the restriction of the air guide cover 5, the cold air discharged by the refrigeration and air conditioning 4 cannot reach the front of the battery module 2 and is isolated from the discharged hot air, and will not mix with each other. The cold air is guided by the air guide cover 5 into the heat dissipation air inlet 12 and flows from front to back along the heat dissipation air inlet 12. Figure 1 、 Figure 2 、 Figure 6 As shown, the air flows horizontally along the Y-axis in the heat dissipation air inlet duct 12. When the air reaches the rear side wall of the cabinet 1, it turns to flow downward and enters the air guide channel. Since the battery modules 2 are arranged vertically, the air flow is sent to the air inlet at the rear of each battery module 2 through the air guide channel. When the cold air passes through the rear of each battery module 2, a portion of the cold air will enter the battery module 2. The cold air flows through the interior of the battery module 2 and absorbs heat, cooling the interior of the battery module 2. The air outlet at the front of each battery module 2 is used to discharge the hot air that has absorbed heat and heated up. The hot air reaches the space between the front of the battery module 2 and the cabinet door 11, and enters the heat exhaust port 42 of the refrigeration and air conditioning 4 between the battery module 2 and the cabinet door 11.

[0038] The energy storage power supply cabinet adopted by the present invention isolates the cold air provided by the refrigeration air conditioner 4 from the hot air after absorbing heat from the battery module 2 by setting an air guide cover 5 structure, so that the air flow flows along the designed path, and the cold air will not be mixed with the exhausted hot air, avoiding the waste of cold energy before entering the battery module 2, and improving the cooling efficiency.

[0039] Building on the above solution, the inlet end of the air scoop 5 of the present invention is fixed to the refrigeration air conditioner 4, and the air scoop 5 can move synchronously with the opening of the cabinet door 11. The outlet end of the air scoop 5 is crimped onto the end of the heat dissipation inlet duct 12, ensuring close contact. When the cabinet door 11 is closed, the outlet end of the air scoop 5 is precisely aligned with the end of the heat dissipation inlet duct 12. A sealing gasket can be installed at the outlet end of the air scoop 5 or the end of the heat dissipation inlet duct 12 to further enhance the tightness of the joint between the two and prevent air leakage.

[0040] Combine Figure 7 、 Figure 8 As shown, the cross-sectional area of ​​the inlet end of the air guide hood 5 adopted in the present invention is larger than the cross-sectional area of ​​the outlet end. The outlet end receives airflow in a wider range and is designed with a gradually narrowing cross-section, so that the airflow forms a converging effect, and finally the airflow is discharged outward in a more concentrated manner.

[0041] The air guide cover 5 has a top surface, a bottom surface and two side surfaces, wherein the top surface and the bottom surface are both flat near the two ends, and the main parts of the top surface and the bottom surface are inclined surfaces. The inclination of the top surface of the air guide cover 5 is smaller than the inclination of the bottom surface, so that the height of the outlet end of the air guide cover 5 is higher than the height of the inlet end. Figure 8 As shown, the slope refers to the angle between the surface and the horizontal plane. The angle α between the top surface and the horizontal plane is smaller than the angle β between the bottom surface and the horizontal plane, and the cross-sectional area in the direction of airflow forms a gradually decreasing trend. For example, the angle α is 55°±5°, and the angle β is 75°±5°.

[0042] Combine Figure 1 、 Figure 2 、 Figure 9As shown, a support member 13 is mounted on the exterior surface of the cabinet 1 and secured to the exterior surface of the cabinet 1 via bolts or other means. An adapter 16 is mounted on the inverter (not shown in the figures) and secured to the inverter via bolts or other means. The adapter 16 cooperates with the support member 13 to suspend and secure the inverter, thereby mounting the inverter on the exterior of the cabinet 1. In one specific configuration, the support member 13 is secured to the energy storage cabinet using four M8*16 nuts. The adapter 16 and the inverter bracket are secured to the adapter plate's pressure-riveted studs using five M8 nuts. The support member 13 and the adapter 16 are two independent structures. Alternatively, only one adapter structure can be provided to fix the inverter to the outer surface of the cabinet 1. In this case, the support member 13 and the energy storage cabinet are fixed to the cabinet using four M8*16 nuts, and the support member 13 and the inverter bracket are fixed to the adapter plate riveted studs using five M8 nuts to support the inverter. These specific installation methods should all be included in the protection scope of this utility model.

[0043] The inverter is located on the side of the cabinet 1 where the electrical components 3 are located, and can more conveniently achieve electrical connection with the electrical components 3 in the cabinet 1. In the structure shown in the attached figure, the left compartment of the cabinet 1 is the battery compartment, which is used to place the battery module 2; the right compartment is the power compartment, which is used to place the electrical components 3. There are no other important heat-generating equipment in the cabinet 1 except the battery module 2, so the battery module 2 and the electrical components 3 share the air conditioning duct and fire-fighting facilities. Since the inverter is installed outside the cabinet 1, the heat generated by the inverter during operation is dissipated to the outside and will not enter the interior of the cabinet 1, reducing the heat dissipation pressure inside the cabinet 1.

[0044] The inverter is independently suspended outside the cabinet and does not share air conditioning ducts and fire protection facilities with the energy storage cabinet, preventing the heat generated by the inverter from affecting the cabinet; the external placement of the inverter helps to reduce the cabinet's footprint.

[0045] Based on any of the above technical solutions and their combinations, the utility model provides a blasting device 14 on the surface of the cabinet 1. The blasting device 14 can realize directional blasting and control the amount of explosives used so that the blasting device 14 can only break the surface of the cabinet 1. The blasting device 14 can blast on the surface of the cabinet 1 to form a pressure relief zone without damaging other equipment installed inside the cabinet 1.

[0046] Combine Figures 1 to 5As shown, the blasting device 14 is mounted on the top surface of the cabinet 1, directly above the battery module 2. When the blasting device 14 explodes, it creates a gap in the top surface of the cabinet 1, rapidly releasing pressure from within the cabinet 1. This prevents overpressure and deformation of the cabinet 1, which could lead to explosion and potential damage to surrounding equipment and personnel. When the blasting device 14 explodes, the blasting plate opens along a designated area, releasing pressure from within the cabinet 1 to the surrounding area. The blasting device 14 is secured with M8 bolts, requiring a symmetrical, alternating, double-load tightening method. First, pre-tighten the bolts, then tighten them with a torque wrench to 20 N·m. Finally, tighten them again in a single direction, using a torque of 20 N·m.

[0047] In addition to being arranged on the top surface, the blasting device 14 can also be arranged on other side walls of the cabinet body 1 or on the cabinet door 11 , which can also achieve the pressure relief effect.

[0048] A fire extinguishing device 15 is installed at the top of cabinet 1. Fire extinguishing device 15 is triggered electrically or thermally, releasing a fire extinguishing agent to extinguish a fire to a certain extent, either putting out or delaying the fire. The agent released by fire extinguishing device 15 absorbs heat and decomposes, cooling the fire. It also acts as a chemical inhibitor in the gas and solid phases. Electric drive requires the energy management module to provide an ignition current of 2A / 5ms to the fire extinguishing device 15. If hot-started, an open flame inside the cabinet ignites the thermistor wire, activating the agent in the fire extinguishing device and enabling spraying.

[0049] A fire detector 17 is installed on the top of the cabinet 1. The fire detector 17 includes an optical smoke detector, a constant temperature heat detector, a carbon monoxide detector and a hydrogen detector. At least two of these detectors should be installed. Different detectors assist each other to provide multiple forms of detection.

[0050] Optical smoke detector trigger conditions: An alarm signal is issued when the smoke concentration in cabinet 1 reaches 5% obs / m²-15% obs / m². Fixed-temperature temperature detector trigger conditions: An alarm signal is issued when the temperature in cabinet 1 reaches the first threshold of 57°C ± 5°C, and an alarm signal is issued when the second threshold reaches 70°C ± 5°C. The first and second thresholds can be adjusted according to the situation. Carbon monoxide and hydrogen detector trigger conditions: The first alarm point of the lower explosive limit of the gas concentration in the cabinet reaches 20% LEL, and the second alarm point reaches 50% LEL.

[0051] The energy storage power supply cabinet of the utility model includes an energy management module, combined with Figure 10As shown, the energy management module is configured to, upon receiving a fault signal from a single detector, shut down the refrigeration and air conditioning unit 4 and disconnect the AC power supply, cut off the power supply, and prevent further entry of outside air to avoid fueling the fire; switch to standby mode, and send an alarm signal to the operator, awaiting manual processing. The fire extinguishing device 15 is not activated when a single detector sends a fault signal, thereby avoiding false alarms. When the fire is clear and triggers two detectors to send fault signals, the energy management module receives fault signals from two or more detectors. At this time, the possibility of false alarms is very low, and the fire extinguishing device 15 is activated to automatically perform fire extinguishing operations. When the fire is quickly extinguished, there is no need to activate the blasting device 14. If the fault signal from the detector continues to exceed the set threshold, the blasting device 14 is activated to release the high pressure inside the cabinet 1, thereby avoiding the formation of high pressure inside the cabinet and causing greater danger.

[0052] When any of the fire detectors 17 in the energy storage power cabinet receives a fire fault signal, it is fed back to the energy management module through the IO expansion module, which determines to shut down the air conditioner and disconnect the AC power to prevent continued operation and air circulation in the cabinet.

[0053] When two or more fire detectors send out fire fault signals, they will continue to be fed back to the energy management module, which will control the automatic fire extinguishing device to operate, give it a required operating current and time, and spray the entire cabinet with chemicals to prevent the fire from spreading.

[0054] Regardless of whether an electric or thermally driven automatic fire extinguishing device is used, if a fire cannot be suppressed, the pressure inside the cabinet will increase, and the cabinet may deform and explode due to overpressure, thereby affecting the surrounding area. If an additional anti-burst device is configured, when an explosion occurs, the blasting device 14 will open along a designated area and release the pressure from the blasting device to the top area, preventing the cabinet from deforming and exploding due to overpressure, affecting the inverter, and preventing personal injury. The outdoor energy storage cabinet power cabinet provided by this utility model has a reasonable layout of fire-fighting equipment, effectively enhancing firefighting effectiveness and improving fire safety levels.

[0055] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An energy storage power supply cabinet, characterized in that: The cabinet comprises a cabinet (1) in which a battery module (2) is placed; a horizontal heat dissipation air inlet duct (12) is provided between the top surface of the cabinet (1) and the highest battery module (2); a vertical air guide channel is formed between the rear of the battery module (2) and the rear side wall of the cabinet (1), and the top of the air guide channel is connected to the heat dissipation air inlet duct (12); The cabinet body (1) is provided with a cabinet door (11), and a refrigeration air conditioner (4) is provided on the cabinet door (11); an air guide cover (5) is provided between the cold air outlet (41) of the refrigeration air conditioner (4) and the heat dissipation air inlet duct (12); The air guide cover (5) is used to send the cold air discharged from the refrigeration air conditioner (4) to the heat dissipation air inlet duct (12), and the air flow is sent to the air inlet at the rear of each battery module (2) through the air guide duct. The air outlet at the front of each battery module (2) is used to discharge hot air and enter the heat exhaust port (42) of the refrigeration air conditioner (4) from between the battery module (2) and the cabinet door (11).

2. The energy storage power supply cabinet according to claim 1, characterized in that: The inlet end of the air guide cover (5) is fixed to the refrigeration air conditioner (4), and the outlet end is pressed onto the end of the heat dissipation air inlet duct (12).

3. The energy storage power supply cabinet according to claim 2, characterized in that: The cross-sectional area of ​​the inlet end of the air guide cover (5) is larger than the cross-sectional area of ​​the outlet end; the slope of the top surface of the air guide cover (5) is smaller than the slope of the bottom surface, so that the height of the outlet end of the air guide cover (5) is higher than the height of the inlet end.

4. The energy storage power supply cabinet according to claim 1, characterized in that: A support member (13) is mounted on the outer surface of the cabinet (1), and an adapter member (16) is mounted on the inverter, wherein the adapter member (16) cooperates with the support member (13) to suspend and fix the inverter; The inverter is located on a side of the cabinet (1) where the electrical components (3) are located.

5. The energy storage power supply cabinet according to any one of claims 1 to 4, characterized in that: A blasting device (14) is provided on the surface of the cabinet (1), and the blasting device (14) is capable of blasting on the surface of the cabinet (1) to form a pressure relief zone.

6. The energy storage power supply cabinet according to claim 5, characterized in that: The blasting device (14) is installed on the top surface of the cabinet (1), directly above the battery module (2).

7. The energy storage power supply cabinet according to claim 5, characterized in that: A fire extinguishing device (15) is installed on the top of the cabinet (1), and the fire extinguishing device (15) is triggered by electrical drive or thermal drive.

8. The energy storage power supply cabinet according to claim 7, characterized in that: Fire detectors (17) are installed on the top of the cabinet (1), including an optical smoke detector, a constant temperature heat detector, a carbon monoxide detector, and a hydrogen detector.

9. The energy storage power supply cabinet according to claim 8, characterized in that: The system also includes an energy management module, which is configured to, upon receiving a fault signal from a single detector, shut down the refrigeration and air conditioning (4) and disconnect the AC power supply; upon receiving a fault signal from two or more detectors, activate the fire extinguishing device (15); and upon receiving a fault signal from a detector that continues for a set threshold, activate the blasting device (14).

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