Energy storage prefabricated cabin

Abstract

The invention relates to an energy storage prefabricated cabin which comprises an energy storage container, the interior of the energy storage container is divided into a plurality of compartments through partition plates, a water fire extinguishing system is fixedly arranged on the energy storage container, a gas fire extinguishing system is arranged in the energy storage container, and air inlets are formed in door plates of the compartments. A pressure relief opening, an air outlet and an explosion venting plate are arranged at the top of the compartment, an agent supplementing pipeline is arranged at the input end of the water fire fighting system, an air conditioner is arranged on a door plate of the compartment, and a one-way non-return drain valve is arranged on one side of the air conditioner and located on the door plate of the compartment; the energy storage container is divided into a plurality of compartments through the partition plates, each compartment is independently provided with a water fire-fighting nozzle and a gas fire-fighting nozzle, when a fire disaster occurs, only the compartment where the fire disaster occurs needs to be subjected to fire extinguishing treatment, other compartments are not affected, and the loss of equipment is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage systems, and in particular to a prefabricated energy storage cabin. Background Art

[0002] With the scale-up of the domestic energy storage industry, various manufacturers have launched systems with high volume energy density. However, blindly pursuing volume energy density ratio and compressing the space for fire protection and battery isolation may bring some safety hazards.

[0003] The energy storage systems commonly used in the industry currently usually use an entire prefabricated battery cabin with a set of temperature and humidity sensors, smoke detectors, combustible gas detectors, ventilation devices, perfluorohexane gas fire fighting and water fire fighting.

[0004] In the energy storage systems commonly used in the current industry, although the system is configured with a gas fire-fighting solution, the temperature of the lithium battery can reach 800°C during thermal runaway. Even if the gas fire-fighting system can respond in time, the re-ignition rate is extremely high, and it will eventually need to be extinguished by water fire-fighting or allowed to burn out, resulting in the scrapping of the entire system. The cost of each thermal runaway of the energy storage system is very high. Summary of the invention

[0005] In view of the above problems existing in the prior art, the main purpose of the present invention is to provide a prefabricated energy storage cabin.

[0006] The technical solution of the present invention is as follows: a prefabricated energy storage cabin, including an energy storage container, the interior of the energy storage container is divided into a plurality of compartments by a partition, a water fire-fighting system is fixedly provided on the energy storage container, a gas fire-fighting system is provided in the energy storage container, an air inlet is provided on the door panel of the compartment, a pressure relief port, an air exhaust port and an explosion relief plate are provided on the top of the compartment, an agent replenishment pipeline is provided at the input end of the gas fire-fighting system, an air conditioner is provided on the door panel of the compartment, and a one-way check drain valve is provided on one side of the air conditioner and located on the door panel of the compartment.

[0007] As a preferred embodiment, the water fire fighting system is composed of multiple groups of water fire fighting pipelines, and the single group of water fire fighting pipelines includes a water fire fighting joint, one end of the water fire fighting joint is fixedly connected to the first-level water fire fighting pipeline, the end of the first-level water fire fighting pipeline away from the water fire fighting joint is fixedly connected to the second-level water fire fighting pipeline, the second-level water fire fighting pipeline is fixedly connected to the tertiary water fire fighting pipeline, and one end of the tertiary water fire fighting pipeline is fixedly connected to the water sprinkler.

[0008] As a preferred embodiment, the gas fire fighting system includes a gas fire fighting agent cabinet, which is connected to a gas fire fighting main line through a pipeline. The gas fire fighting main line is divided into multiple groups of gas fire fighting PACK-level pipelines, and each gas fire fighting PACK-level pipeline is fixedly connected to a number of gas fire fighting nozzles.

[0009] As a preferred embodiment, the pressure relief port and the exhaust port on the top of the prefabricated energy storage cabin are provided with rain covers, flanges are provided on both sides of the rain cover, the top of the rain cover is raised, and the edge of the rain cover is located below the exhaust port, and the two are staggered in height and horizontally cross-arranged.

[0010] As a preferred embodiment, a smoke detector, a composite detector and a temperature detector are provided on the lower surface of the top plate of the prefabricated energy storage compartment.

[0011] As a preferred embodiment, a plurality of cluster detectors are provided on the pipeline of a prefabricated energy storage cabin of the gas fire fighting system, a cluster-level diverter valve is provided on the gas fire fighting main line, and a cabin-level diverter valve and a cabin-level sprinkler are provided on the gas fire fighting main line and the gas fire fighting PACK-level pipeline.

[0012] As a preferred implementation, a plurality of battery clusters are arranged in the compartment, and the output end of the air conditioner faces the battery clusters.

[0013] Compared with the prior art, the advantages and positive effects of the present invention are that the energy storage container is divided into several compartments by partitions, each compartment is independently provided with water fire fighting and gas fire fighting nozzles. When a fire occurs, only the compartment where the fire occurs needs to be extinguished, and other compartments are not affected, thereby reducing equipment losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention provides a schematic diagram of the overall structure of a prefabricated energy storage cabin without air conditioning;

[0015] Figure 2 The present invention provides a schematic diagram of the internal structure of a prefabricated energy storage cabin

[0016] Figure 3 A schematic diagram of the air conditioning position structure of a prefabricated energy storage cabin is provided for the present invention;

[0017] Figure 4 The present invention provides a schematic diagram of the water fire fighting system structure of a prefabricated energy storage cabin;

[0018] Figure 5 The present invention provides a schematic diagram of the structure of a gas fire-fighting system of a prefabricated energy storage cabin;

[0019] Figure 6 The present invention provides a schematic diagram of the structure of a single set of water fire-fighting pipelines in a prefabricated energy storage cabin.

[0020] Legend: 1. Energy storage container; 2. Partition; 3. Compartment; 4. Water fire fighting system; 41. Water fire fighting joint; 42. Water fire fighting first-level pipeline; 43. Water fire fighting second-level pipeline; 44. Water fire fighting third-level pipeline; 45. Water sprinkler; 5. Gas fire fighting system; 51. Gas fire fighting agent cabinet; 52. Gas fire fighting main pipeline; 53. Gas fire fighting PACK-level pipeline; 54. Gas fire fighting sprinkler; 6. Air inlet; 7. Pressure relief port; 8. Exhaust port; 9. Explosion vent; 10. Agent replenishment pipeline; 11. Air conditioning; 12. One-way check drain valve. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] Example

[0026] A prefabricated energy storage cabin comprises an energy storage container 1, wherein the interior of the energy storage container 1 is divided into a plurality of compartments 3 by a partition 2, wires and pipes are threaded through prefabricated holes on the compartment partition 2 between the compartments 3, and waterproof and fire-resistant materials are used to seal the wires and pipes after threading, a water fire fighting system 4 is fixedly provided on the energy storage container 1, a gas fire fighting system 5 is provided in the energy storage container 1, an air inlet 6 is provided on the door panel of the compartment 3, a pressure relief port 7, an exhaust port 8 and an explosion relief plate 9 are provided on the top of the compartment 3, and in the early stage of thermal runaway of the battery, combustible gas is blown out from the exhaust port 8 by a fan to prevent the accumulation of combustible gas concentration, The pressure relief port 7 is used to release the pressure rising in the battery compartment caused by the spraying of the gas fire-fighting agent. When the pressure in the compartment 3 due to the release of flammable gas by the battery exceeds the pressure outside the compartment by 10kpa, the explosion relief plate 9 opens at the rupture point to release the pressure to the top air, preventing the compartment 3 from deflagration and explosion affecting the batteries in the adjacent compartments 3. The input end of the gas fire-fighting system 5 is provided with an agent replenishing pipeline 10, which is a part of the gas fire-fighting system 5. The agent replenishing pipeline 10 is connected to the gas fire-fighting agent cabinet 51 and can be placed outside the energy storage container 1. A reagent replenishing tank uses gas fire-fighting agents to cool down the battery in the early stage of thermal runaway, which can avoid the scrapping of good batteries due to water fire spraying as much as possible and minimize the loss of thermal runaway. The optional reagent replenishing tank can be connected to multiple energy storage prefabricated cabins. An air conditioner 11 is provided on the door panel of the compartment 3. The battery is thermally managed by the air conditioner 11. The battery thermal management method can be liquid cooling. The liquid cooling system needs to replace the liquid cooling PACK and the corresponding liquid cooling unit and liquid cooling pipeline. On one side of the air conditioner 11, a one-way check drain valve 12 is provided on the door panel of the compartment 3. After thermal runaway, During the period, when water spray is used to extinguish a fire in a compartment 3, due to the airtightness of the compartment 3, the fire water will continue to accumulate in the compartment 3 and eventually flood the entire battery compartment 3. Therefore, a one-way non-return drain valve 12 is arranged, which is usually in a closed state to prevent external water vapor from entering the compartment and corroding the equipment. When the water level rises to the top pack, the one-way non-return drain valve 12 is opened by the water pressure to drain water outside the cabin to prevent the water level from flooding the detectors and lines at the top, and to prevent the pressure in the cabin from increasing sharply due to the continuous infusion of fire water, resulting in damage to the cabin structure and affecting the adjacent compartments;

[0027] The water fire fighting system 4 is composed of multiple groups of water fire fighting pipelines, and a single group of water fire fighting pipelines includes a water fire fighting connector 41. One end of the water fire fighting connector 41 is fixedly connected to the water fire fighting primary pipeline 42. The end of the water fire fighting primary pipeline 42 away from the water fire fighting connector 41 is fixedly connected to the water fire fighting secondary pipeline 43. The water fire fighting primary pipeline 42 is divided into two water fire fighting secondary pipelines 43. The water fire fighting secondary pipeline 43 is fixedly connected to the water fire fighting tertiary pipeline 44. The water fire fighting secondary pipeline 43 is divided into two water fire fighting tertiary pipelines 44. One end of the water fire fighting tertiary pipeline 44 is fixedly connected to the water sprinkler 45. The pipeline layout and sprinkler layout of the water fire fighting are adjusted according to the space and layout of the compartment 3 to meet the fire fighting requirements.

[0028] The gas fire fighting system 5 includes a gas fire fighting agent cabinet 51, which is used to store gas fire fighting agents. The gas fire fighting agent cabinet 51 is connected to a gas fire fighting main line 52 through a pipeline. The gas fire fighting main line 52 is divided into multiple groups of gas fire fighting PACK-level pipelines 53. Each gas fire fighting PACK-level pipeline 53 is fixedly connected to a number of gas fire fighting nozzles 54. Each gas fire fighting nozzle 54 is connected to a fire fighting agent interface reserved on the PACK, so as to realize the spraying of fire fighting agents into the PACK for accurate fire extinguishing and cooling.

[0029] The pressure relief port 7 and the exhaust port 8 at the top of the compartment 3 are provided with rain covers, flanges are provided on both sides of the rain cover, the top of the rain cover is raised, the edge of the rain cover is located below the fan of the exhaust port 8, the two are staggered in height and horizontally cross-arranged, and the installed rain cover forms an exhaust channel with the top of the energy storage container 1 to realize the discharge of gas in the cabin. The rainproof ventilation structure of the top pressure relief port 7 is similar to that of the exhaust port, and exhaust and rain protection are achieved through the above structure.

[0030] A smoke detector, a composite detector and a temperature detector are provided on the lower surface of the top plate of the compartment 3, which are used to detect the temperature, smoke and combustible gas status in the compartment and report to the fire control system; a number of cluster detectors are provided on the pipeline of the gas fire protection system 5, which are used to timely detect and locate the PACK with thermal runaway, and a cluster-level diverter valve is provided on the gas fire protection main line 52, which is used to realize the directional spraying of the agent; a cabin-level diverter valve and a cabin-level nozzle are provided on the gas fire protection main line 52 and the gas fire protection PACK-level pipeline 53, which are used to realize the directional spraying of the agent in the entire compartment; a number of battery clusters are provided in the compartment 3, and the output end of the air conditioner 11 faces the battery cluster. Through PACK-level detection and fire protection pipelines, accurate positioning and timely cooling can be achieved, which can greatly reduce the risk of the spread of thermal runaway.

[0031] Working principle:

[0032] As shown in the figure, when a fire occurs, the temperature detectors and smoke detectors inside the compartment 3 can detect the fire in time, transmit the information to the fire control system, shut down the control system, start the fan of the exhaust port 8, and discharge the smoke and combustible gas. When the thermal runaway spreads further, the gas fire fighting system 5 will be started to carry out gas fire fighting on the single compartment 3 that has caught fire, so as to minimize the loss of thermal runaway. In the later stage of thermal runaway, it is necessary to use the water fire fighting system 4 to use water spray to extinguish the fire in a certain compartment 3, and when there is too much water in the compartment 3, the internal water can be discharged through the one-way non-return drain valve 12 to prevent the water level from submerging the detectors and lines at the top. It also prevents the pressure in the cabin from increasing sharply due to the continuous infusion of fire water, causing the cabin structure to be damaged and affecting the adjacent compartments.

[0033] Finally, it should be noted that the above-described embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A prefabricated energy storage cabin, comprising an energy storage container (1), characterized in that: The interior of the energy storage container (1) is divided into a plurality of compartments (3) by a partition (2); a water fire fighting system (4) is fixedly provided on the energy storage container (1); a gas fire fighting system (5) is provided in the energy storage container (1); an air inlet (6) is provided on a door panel of the compartment (3); a pressure relief port (7), an air outlet (8) and an explosion relief plate (9) are provided on the top of the compartment (3); a medicine replenishment pipeline (10) is provided at the input end of the gas fire fighting system (5); an air conditioner (11) is provided on the door panel of the compartment (3); and a one-way non-return drainage valve (12) is provided on one side of the air conditioner (11) and located on the door panel of the compartment (3).

2. The prefabricated energy storage cabin according to claim 1, characterized in that: The water fire fighting system (4) is composed of a plurality of groups of water fire fighting pipelines, wherein a single group of water fire fighting pipelines comprises a water fire fighting joint (41), one end of the water fire fighting joint (41) is fixedly connected to a primary water fire fighting pipeline (42), one end of the primary water fire fighting pipeline (42) away from the water fire fighting joint (41) is fixedly connected to a secondary water fire fighting pipeline (43), the secondary water fire fighting pipeline (43) is fixedly connected to a tertiary water fire fighting pipeline (44), and one end of the tertiary water fire fighting pipeline (44) is fixedly connected to a water sprinkler (45).

3. The prefabricated energy storage cabin according to claim 1, characterized in that: The gas fire fighting system (5) comprises a gas fire fighting agent cabinet (51), the gas fire fighting agent cabinet (51) being connected to a gas fire fighting main pipeline (52) via a pipeline, the gas fire fighting main pipeline (52) being divided into a plurality of gas fire fighting PACK-level pipelines (53), and each of the gas fire fighting PACK-level pipelines (53) being fixedly connected to a plurality of gas fire fighting nozzles (54).

4. The prefabricated energy storage cabin according to claim 1, characterized in that: The pressure relief port (7) and the air outlet (8) at the top of the compartment (3) are provided with rain shields, flanges are provided on both sides of the rain shield, the top of the rain shield is raised, and the edge of the rain shield is located below the fan of the air outlet (8), and the two are staggered in height and arranged horizontally in a cross-direction.

5. The prefabricated energy storage cabin according to claim 1, characterized in that: The lower surface of the top plate of the compartment (3) is provided with a smoke detector, a composite detector and a temperature detector.

6. The prefabricated energy storage cabin according to claim 3, characterized in that: A plurality of inter-cluster detectors are provided on the pipeline of the gas fire fighting system (5), a cluster-level diverter valve is provided on the gas fire fighting main pipeline (52), and cabin-level diverter valves and cabin-level sprinklers are provided on the gas fire fighting main pipeline (52) and the gas fire fighting PACK-level pipeline (53).

7. The prefabricated energy storage cabin according to claim 1, characterized in that: A plurality of battery clusters are arranged in the compartment (3), and the output end of the air conditioner (11) faces the battery clusters.

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