Fire extinguishing device for energy storage battery cabin

Abstract

The utility model belongs to the technical field of battery compartment fire fighting, and discloses an energy storage battery compartment fire extinguishing device, which is arranged in an energy storage battery compartment, comprises a firewall assembly, a spraying assembly and a monitoring management system, carries out partition management on battery modules in the energy storage battery compartment, effectively reduces the influence on other healthy batteries when thermal runaway occurs, and improves the safety of the energy storage battery compartment. Meanwhile, the maintenance cost of the energy storage battery cabin in the later period is reduced, a firewall is arranged, when it is found that the battery modules have thermal runaway symptoms or thermal runaway occurs, normal battery modules in the cabin body are protected, the reaction time is shortened, the possibility of thermal runaway of the cabin body is reduced, and the safety level of the energy storage battery cabin is increased; on one hand, the battery module with thermal runaway can be subjected to effective fire-fighting treatment, and on the other hand, the problem of water shortage of an energy storage power station in northern areas can be effectively relieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery cabin fire fighting technical field especially relates to a kind of energy storage battery cabin fire extinguishing device. BACKGROUND

[0002] With the wind power, photovoltaic installed capacity continues to rise, optimize energy structure, promote clean and low carbon development, has become consensus, under this background, the importance of energy storage technology increasingly highlights, it not only can promote the efficient use of new energy, improve the flexibility of power system, also can provide solid guarantee for the safe and stable operation of new type power system.In many energy storage technologies, lithium ion battery rises rapidly by its high energy density, high efficiency charge-discharge performance and fast response capability, becomes the fastest developing new energy storage technology, and is widely used in energy storage power station and new energy vehicle etc.Field.The existing energy storage battery cabin can accommodate nearly ten thousand battery units, a battery module can accommodate several hundred battery units, these battery units improve energy delivery efficiency by series-parallel connection also increase the risk of combustion explosion.When battery module is overcharged or overdischarged, often accompanied by heat accumulation, in this process, it is easy to cause thermal runaway, if not timely intervention, it is likely to cause the fire or explosion of entire cabin even power station, cause major hidden trouble to personal safety and property safety.In some researches and experiments show that single energy storage battery module before thermal runaway, module temperature and BMS parameter have been abnormal, if intervention before thermal runaway, not only can effectively reduce the risk of cabin combustion explosion, also can reduce economic loss.

[0003] The existing energy storage battery cabin is mostly pipeline spraying, and the process needs a certain time from discovering thermal runaway to connecting pipe to realizing water spraying, which is easy to cause the aggravation of energy storage battery module thermal runaway risk, and the existing spraying is directed to the entire battery cabin, so that the maintenance and subsequent processing cost of power station are increased, and it is difficult for energy storage power station in northern area with lack of water to provide a large amount of spraying water in a short time. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of energy storage battery cabin fire extinguishing device, carries out zoning management, reduces the maintenance cost of energy storage battery cabin in later period, can also reduce the possibility of cabin thermal runaway, increases the safety level of energy storage battery cabin, saves spraying water resources.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A fire extinguishing device for energy storage battery cabin is arranged in the energy storage battery cabin, a plurality of groups of battery modules are arranged in the energy storage battery cabin, each group of battery modules comprises a plurality of groups of battery clusters arranged in the height direction, and two adjacent groups of battery modules form a fire-fighting area. The fire extinguishing device for energy storage battery cabin comprises:

[0007] A firewall assembly comprises a plurality of firewall units, each of the plurality of firewall units corresponds to one of the fire-fighting areas, and each of the firewall units comprises fireproof cloth. The fireproof cloth is used to isolate the corresponding fire-fighting area from other fire-fighting areas and to separate two groups of battery modules in the corresponding fire-fighting area.

[0008] A spraying assembly comprises a fire extinguishing agent unit, which comprises a storage tank, a spraying main pipe, a spraying branch pipe and a spraying head. The storage tank stores fire extinguishing agent. The spraying main pipe is connected to the storage tank. The spraying branch pipe corresponds to each of the fire-fighting areas. One end of the spraying branch pipe is connected to the spraying main pipe, and the other end is clamped between two groups of battery modules in the corresponding fire-fighting area and extends from the top to the bottom of the battery modules. The spraying branch pipe is connected to a plurality of spraying heads. The spraying head extends away from the spraying branch pipe, and one spraying head is arranged above each battery cluster.

[0009] A monitoring and management system is configured to control the on-off of the plurality of spraying branch pipes and the release or recovery of the plurality of fireproof cloths.

[0010] Preferably, the firewall unit further comprises a reel and a driving member. The reel is rotatably arranged on a structural beam at the top of the energy storage battery cabin. The fireproof cloth is wound around the reel, and the fixed end of the fireproof cloth is fixed to the reel. The monitoring and management system is connected to the driving member and is configured to control the driving member to drive the reel to rotate to release or recover the fireproof cloth.

[0011] Preferably, the firewall unit further comprises a gravity rod arranged at the free end of the fireproof cloth.

[0012] Preferably, the connection between the spraying head and the spraying branch pipe is located directly above the middle region of the battery cluster, and the spraying head extends bidirectionally along the width of the battery cluster.

[0013] Preferably, the spraying head is a bidirectional spraying head, which is used to spray the fire extinguishing agent upward and downward.

[0014] As preferred, a spray electromagnetic valve is arranged at the connection between the spray branch pipe and the spray main pipe, and the monitoring management system is connected to the spray electromagnetic valve, and the monitoring management system controls the opening and closing of the spray electromagnetic valve to control the on-off of the spray branch pipe.

[0015] As preferred, the spray assembly further comprises a water spray unit, which comprises a water tank, a water spray main pipe, water spray branch pipes and water spray heads, the water spray main pipe is connected to the water tank, the water spray branch pipes correspond to the fire-fighting areas one by one, one end of each water spray branch pipe is connected to the water spray main pipe, and the projection of the other end of each water spray branch pipe is located between two groups of battery modules in the corresponding fire-fighting area.

[0016] As preferred, the energy storage battery cabin fire extinguishing device has a first state, in which the temperature of one or two groups of battery modules in the energy storage battery cabin is abnormal, and the monitoring management system is configured to release the fireproof cloth in the fire-fighting area where the battery module with abnormal temperature is located and control the corresponding water spray branch pipe to be connected after the corresponding spray branch pipe is connected.

[0017] As preferred, the energy storage battery cabin fire extinguishing device has a second state, in which the temperature of more than two groups of battery modules in the energy storage battery cabin is abnormal, and the monitoring management system is configured to release the fireproof cloth in all fire-fighting areas and control the corresponding water spray branch pipe to be connected after the corresponding spray branch pipe is connected in the fire-fighting area where the battery module with abnormal temperature is located.

[0018] As preferred, the energy storage battery cabin fire extinguishing device further comprises an infrared ball machine installed in the energy storage battery cabin, and the monitoring management system is connected to the infrared ball machine and the BMS system of the battery module.

[0019] The energy storage battery cabin fire extinguishing device has the advantages that:

[0020] The utility model provides a kind of energy storage battery cabin fire extinguishing device, it is arranged in energy storage battery cabin, the inside interval of energy storage battery cabin places several groups of battery module, battery module includes the multiple groups of battery cluster that are placed along height direction interval, two adjacent battery modules are a fire area, a kind of energy storage battery cabin fire extinguishing device includes fire wall component, spraying component and monitoring management system, fire wall component includes several fire wall units, and several fire wall units correspond to several fire areas one to one, fire wall unit includes fireproof cloth, fireproof cloth is used to isolate corresponding fire area with other fire area, and separate two groups of battery modules in corresponding fire area, spraying component includes fire extinguishing agent unit, fire extinguishing agent unit includes storage tank, spraying main pipe, spraying branch pipe and spray head, storage tank stores fire extinguishing agent inside, spraying main pipe is communicated with storage tank, spraying branch pipe corresponds to fire area one to one, one end of spraying branch pipe is all communicated with spraying main pipe, the other end is clamped between two groups of battery modules in corresponding fire area and extends from top to bottom by battery module, and spraying branch pipe interval communicates multiple spray heads, spray head extends away from spraying branch pipe, and the top of each battery cluster is equipped with a spray head, monitoring management system is configured to control the on-off of several spraying branch pipes and the release or recovery of several fireproof cloths;The utility model discloses a fire wall, when discovering that battery module appears heat runaway sign or occurs heat runaway, protects normal battery module in cabin body, reduces reaction time, reduces the possibility of cabin body heat runaway, increases the security level of energy storage battery cabin, by setting fire extinguishing agent unit, on one hand, effective fire-fighting treatment can be carried out to the battery module that occurs heat runaway, in addition, the problem of water storage shortage of energy storage power station in northern region can also be effectively alleviated, by zoned management battery module in energy storage battery cabin, the influence on other healthy battery when heat runaway occurs can be effectively reduced, and the maintenance cost of energy storage battery cabin in later period is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the structure schematic diagram of a kind of energy storage battery cabin fire extinguishing device provided in the utility model embodiment;

[0022] Figure 2 It is the structure schematic diagram of fire wall unit provided in the utility model embodiment;

[0023] Figure 3 It is the arrangement schematic diagram of spraying unit provided in the utility model embodiment;

[0024] Figure 4 It is the side view of spraying unit arrangement provided in the utility model embodiment.

[0025] In the figure:

[0026] 10, energy storage battery cabin;20, battery module;30, battery cluster;40, fire area;

[0027] 1, firewall unit; 11, fireproof cloth; 12, reel; 13, gravity bar; 2, infrared ball machine; 31, storage box; 32, spray main pipe; 33, spray branch pipe; 34, spray head; 35, spray electromagnetic valve; 41, water tank; 42, water spray main pipe; 43, water spray branch pipe; 44, water spray electromagnetic valve. DETAILED DESCRIPTION

[0028] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0029] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0031] In the description of the embodiment, the terms "up", "down", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0032] The existing energy storage battery cabin is mostly sprayed by pipeline. After the heat runaway is found, the pipeline is connected, and the water spraying is realized. This process needs a certain time, which can easily cause the risk of heat runaway of the energy storage battery module to increase. At the same time, the existing spraying is for the whole battery cabin. After spraying, the maintenance and subsequent processing cost of the power station will increase. At the same time, it is difficult for the energy storage power station in the northern region with lack of water to provide a large amount of spraying water in a short time.

[0033] Therefore, referring to Figures 1-4 The embodiment provides a kind of energy storage battery cabin fire extinguishing device, by setting fireproof wall, when the heat runaway sign of battery module 20 appears or heat runaway occurs, normal battery module 20 in cabin is protected, reduce reaction time, reduce the possibility of cabin heat runaway, increase the security level of energy storage battery cabin 10;By setting fire extinguishing agent unit, on the one hand, it can effectively extinguish the fire of the battery module 20 that occurs heat runaway, and also can effectively alleviate the problem of water shortage of energy storage power station in the northern region;By zoned management battery module 20 in energy storage battery cabin 10, it can effectively reduce the influence on other healthy batteries when heat runaway occurs, while reducing the maintenance cost of energy storage battery cabin 10 later.

[0034] The embodiment provides a kind of energy storage battery cabin fire extinguishing device arrangement in energy storage battery cabin 10, several groups of battery modules 20 are placed in the interior of energy storage battery cabin 10, battery module 20 includes multiple groups of battery clusters 30 placed along the height direction, adjacent two groups of battery modules 20 are regarded as a fire zone 40, energy storage battery cabin 10 is divided into multiple fire zones 40, and battery module 20 in fire zone 40 is managed separately.

[0035] For example, energy storage battery cabin 10 is provided with four fire zones 40 on both sides of its length direction axisymmetric, four fire zones 40 on the same side are arranged along the length direction of energy storage battery cabin 10, and two groups of battery modules 20 are arranged along the length direction of energy storage battery cabin 10 in fire zone 40.

[0036] A kind of energy storage battery cabin fire extinguishing device includes fireproof wall component, fireproof wall component is used to isolate the heat transfer between battery module 20, when the heat runaway sign of battery module 20 appears or heat runaway occurs, normal battery module 20 in cabin is protected, effectively reduce the influence on other healthy batteries when heat runaway occurs, reduce the possibility of cabin heat runaway.

[0037] Specifically, referring to Figure 1 And Figure 2The fireproof wall assembly comprises a plurality of fireproof wall units 1, the plurality of fireproof wall units 1 correspond to a plurality of fireproof areas 40 one by one, the fireproof wall unit 1 can isolate the corresponding fireproof area 40 from other fireproof areas 40, and separate two groups of battery modules 20 in the corresponding fireproof area 40.

[0038] The fireproof wall unit 1 comprises fireproof cloth 11, the fireproof cloth 11 is used for isolating heat transfer, releasing the fireproof cloth 11 of a certain fireproof wall unit 1, thereby cooperating with the cabin wall of the energy storage battery cabin 10 to enclose the corresponding fireproof area 40, and further isolate it from other fireproof areas 40, and can also separate two groups of battery modules 20 in the corresponding fireproof area 40.

[0039] For example, please refer to Figure 1 The orthogonal projection of the fireproof cloth 11 is F-shaped, the fireproof cloth 11 in F-shaped cooperates with the adjacent two cabin walls of the energy storage battery cabin 10 to enclose the corresponding fireproof area 40, and separates two groups of battery modules 20 in the corresponding fireproof area 40; or the orthogonal projection of the fireproof cloth 11 is M-shaped, the fireproof cloth 11 in M-shaped cooperates with the cabin wall on one side of the energy storage battery cabin 10 to enclose the corresponding fireproof area 40, and two groups of battery modules 20 in the corresponding fireproof area 40.

[0040] Preferably, the fireproof cloth 11 is made of high-temperature-resistant fireproof material, which is light and easy to install and maintain, has the characteristics of stable chemical performance, high-temperature resistance (550-1100 degrees), ablation resistance, soft and tough texture, etc., can protect objects away from hot fire points and spark areas, and completely prevent or isolate burning, and is widely used in aerospace, metallurgy, chemical industry, building materials, fire protection and other industrial fields. Specifically, the inorganic fiber material with a silica (SiO2) content higher than 96% and a softening point close to 1700℃ is used, which can be used at 900℃ for a long time, can work at 1450℃ for 10 minutes, and can remain intact at 1600℃ for 15 seconds.

[0041] Please refer to Figure 2 The fireproof wall unit 1 further comprises a reel 12, a driving member and a gravity rod 13, the reel 12 is rotationally arranged on the structural beam at the top of the energy storage battery cabin 10, the fireproof cloth 11 is wound on the reel 12, the fixed end of the fireproof cloth 11 is fixed to the reel 12, the driving member is used to drive the reel 12 to rotate to release or recover the fireproof cloth 11, and the gravity rod 13 is arranged at the free end of the fireproof cloth 11 to ensure that the fireproof cloth 11 can be smoothly lowered due to gravity during the release process.

[0042] The energy storage battery cabin fire extinguishing device provided by the embodiment has a first state and a second state. In the first state, the temperature of one or two groups of battery modules 20 in the energy storage battery cabin 10 is abnormal, and the fireproof cloth 11 in the fire zone 40 where the battery module 20 with abnormal temperature is located is released at this time. In the second state, the temperature of two or more groups of battery modules 20 in the energy storage battery cabin 10 is abnormal, and the fireproof cloth 11 in the energy storage battery cabin is released at this time, and all the battery modules 20 in the energy storage battery cabin 10 are heat-isolated.

[0043] Preferably, the energy storage battery cabin fire extinguishing device comprises a monitoring and management system, and the driving member of each fire wall unit 1 is connected to the monitoring and management system, so that the monitoring and management system controls the rotation of the corresponding reel 12 by controlling each driving member to drive, thereby individually controlling the release or recovery of the fireproof cloth 11.

[0044] Preferably, the energy storage battery cabin 10 is provided with an infrared ball machine 2, and the infrared ball machine 2 is connected to the monitoring and management system. The monitoring and management system can view the situation in the energy storage battery cabin 10 in real time through the infrared ball machine 2. Further preferably, the BMS system of each battery module 20 is connected to the monitoring and management system, so as to monitor whether the temperature of each battery module 20 is abnormal, and further facilitate the determination of the fire zone 40 where the battery module 20 with abnormal temperature is located, the release or recovery of the corresponding fireproof cloth 11, and the switching of the energy storage battery cabin fire extinguishing device between the first state and the second state.

[0045] Further preferably, the monitoring and management system is further configured to cut off or connect the electrical connection between the energy storage battery cabin 10 and the outside.

[0046] The energy storage battery cabin fire extinguishing device comprises a spraying assembly, and the spraying assembly comprises a fire extinguishing agent unit for spraying fire extinguishing agent to the battery module 20 with thermal runaway, thereby effectively extinguishing the fire.

[0047] The fire extinguishing agent in the embodiment is perfluorohexanone. The perfluorohexanone has good cooling effect and can form a drowning protection within a certain time without damaging the human body. The perfluorohexanone is also not corrosive to commonly used metals such as carbon steel, copper, aluminum, and stainless steel, and will not damage electronic components and circuits, thereby causing no secondary damage. In the case of temperature increase in a closed environment, the pressure change of perfluorohexanone is much smaller than that of other gaseous fire extinguishing agents. In the same volume, when the environmental temperature is between-40 and 80℃, the filling density of perfluorohexanone is generally less than 1.8 times that of the boiling point gaseous fire extinguishing agent. Moreover, the perfluorohexanone is suitable for low-temperature and high-temperature environments.

[0048] Please refer to Figure 1 and Figure 3The fire extinguishing agent unit comprises a storage tank 31, a spraying main pipe 32, spraying branch pipes 33 and spraying heads 34. The storage tank 31 stores fire extinguishing agent inside. The spraying main pipe 32 is connected to the storage tank 31. The spraying branch pipes 33 correspond to the fire-fighting areas 40 one by one. One end of each spraying branch pipe 33 is connected to the spraying main pipe 32, and the other end is clamped between two groups of battery modules 20 in the corresponding fire-fighting area 40 and extends from the top to the bottom of the battery modules 20. The spraying heads 34 are connected to the spraying branch pipes 33. The fire extinguishing agent in the storage tank 31 is released to the corresponding fire-fighting area 40 through the spraying main pipe 32 and the spraying branch pipes 33 by the spraying heads 34 to control the temperature of the battery modules 20 in the fire-fighting area 40.

[0049] The monitoring management system can control the on-off of the spraying branch pipes 33 independently. In combination with the mode that the spraying branch pipes 33 correspond to the fire-fighting areas 40 one by one, the temperature of the battery modules 20 in the fire-fighting area 40 can be controlled, and the battery modules 20 that have thermal runaway can be effectively handled. Through the zoning management of the battery modules 20 in the energy storage battery cabin 10, the influence on other healthy batteries when thermal runaway occurs can be reduced, and the maintenance cost of the energy storage battery cabin 10 in the later period can be reduced.

[0050] Please refer to Figure 1 The energy storage battery cabin 10 is provided with two spraying main pipes 32, which are arranged on the two sides in the length direction of the energy storage battery cabin 10 and are connected to the storage tank 31. The spraying branch pipes 33 are connected to the corresponding spraying main pipe 32 respectively to adapt to the arrangement of the fire-fighting areas 40.

[0051] Further, a plurality of spraying heads 34 are connected to each spraying branch pipe 33 at intervals. The spraying heads 34 extend away from the spraying branch pipes 33, and one spraying head 34 is arranged above each battery cluster 30. Through the above arrangement, the battery clusters 30 in the battery module 20 with abnormal temperature can be effectively sprayed one by one, and the fire extinguishing effect is optimized.

[0052] For example, a spraying electromagnetic valve 35 is arranged at the connection between the spraying branch pipe 33 and the spraying main pipe 32. The monitoring management system is connected to a plurality of spraying electromagnetic valves 35. The monitoring management system controls the on-off of the spraying branch pipes 33 by controlling the opening and closing of the spraying electromagnetic valves 35.

[0053] Preferably, please refer to Figure 4 The connection between the spraying head 34 and the spraying branch pipe 33 is located directly above the middle region of the battery cluster 30, and the spraying head 34 extends bidirectionally along the width direction of the battery cluster 30, thereby increasing the spraying area and reducing the risk of thermal runaway.

[0054] Further preferably, the spray head 34 is a bidirectional spray head, which can spray the fire extinguishing agent upward and downward, so as to not only reduce the surface temperature of the problematic battery cluster 30, but also reduce the temperature of the adjacent battery cluster 30, thereby helping to reduce the risk of thermal runaway.

[0055] The spray assembly further comprises a water spray unit for spraying water to the battery module 20 that has thermal runaway, so as to further reduce the possibility of thermal runaway of the cabin and increase the safety level of the energy storage battery cabin 10.

[0056] The water spray unit comprises a water tank 41, a water spray main pipe 42, water spray branch pipes 43 and water spray heads. The water spray main pipe 42 is connected to the water tank 41. The water spray branch pipes 43 correspond to the fire zones 40 one by one. One end of each water spray branch pipe 43 is connected to the water spray main pipe 42. The water spray branch pipes 43 are located above the fire zones 40. The water spray branch pipes 43 are connected to the water spray heads. The water in the water tank 41 is released to the corresponding fire zones 40 through the water spray main pipe 42 and the water spray branch pipes 43 by the water spray heads, so as to control the temperature of the battery modules 20 in the fire zones 40.

[0057] The monitoring and management system can control the on-off of the water spray branch pipes 43 independently. In combination with the mode that the water spray branch pipes 43 correspond to the fire zones 40 one by one, the battery modules 20 in the energy storage battery cabin 10 can be managed by zones, so as to effectively perform fire fighting on the battery module 20 that has thermal runaway, thereby effectively avoiding the performance degradation and service life shortening of other healthy batteries, and reducing the maintenance cost of the energy storage battery cabin 10 in the later period.

[0058] Please refer to Figure 1 Figure 4 The water spray main pipe 42 is arranged in the middle region of the energy storage battery cabin 10 along the length direction of the energy storage battery cabin 10. The water spray branch pipes 43 are connected to the water spray main pipe 42 in reverse extension one by one, so as to adapt to the arrangement of the fire zones 40.

[0059] Preferably, the orthographic projection of the other end of the water spray branch pipe 43 is located between the two groups of battery modules 20 in the corresponding fire zone 40. The water spray head is arranged at the end of the water spray branch pipe 43 away from the water spray main pipe 42, so as to spray water to the surfaces of the two groups of battery modules 20 in the fire zone 40.

[0060] For example, a water spray electromagnetic valve 44 is arranged at the connection between the water spray branch pipe 43 and the water spray main pipe 42. The monitoring and management system is connected to the water spray electromagnetic valves 44. The monitoring and management system controls the on-off of the water spray branch pipes 43 by controlling the opening and closing of the water spray electromagnetic valves 44.

[0061] Optionally, the embodiment further provides two water sprinkling branch pipes 43 in the middle region of the energy storage battery cabin 10, the two water sprinkling branch pipes 43 extend reversely and are respectively arranged between two adjacent fire-fighting areas 40, and the two water sprinkling branch pipes 43 are connected to reduce the temperature of the two adjacent fire-fighting areas 40 and the temperature of the cabin of the energy storage battery cabin 10.

[0062] In the first state of the energy storage battery cabin fire extinguishing device, the temperature of one group or two groups of battery modules 20 in the energy storage battery cabin 10 is abnormal.

[0063] The monitoring management system cuts off the electrical connection between the energy storage battery cabin 10 and the outside, confirms the fire-fighting area 40 where the temperature abnormal battery module 20 is located according to the data of the BMS system, drives the corresponding reel 12 to rotate by controlling the driving member, releases the fireproof cloth 11 of the fire-fighting area 40 where the temperature abnormal battery module 20 is located, and opens the corresponding sprinkling electromagnetic valve 35 to connect the sprinkling branch pipe 33 of the fire-fighting area 40 where the temperature abnormal battery module 20 is located.

[0064] At this time, the BMS system data of the temperature abnormal battery module 20 is analyzed, if the temperature of the temperature abnormal battery module 20 returns to normal and the adjacent battery module 20 is normal, the monitoring stage is entered, if the temperature of the temperature abnormal battery module 20 does not return to normal or the adjacent battery module 20 is abnormal, the corresponding water sprinkling electromagnetic valve 44 is opened by the monitoring management system to connect the water sprinkling branch pipe 43 of the fire-fighting area 40 where the temperature abnormal battery module 20 is located.

[0065] In the second state of the energy storage battery cabin fire extinguishing device, the temperature of two or more groups of battery modules 20 in the energy storage battery cabin 10 is abnormal.

[0066] The monitoring management system cuts off the electrical connection between the energy storage battery cabin 10 and the outside, confirms the fire-fighting area 40 where the temperature abnormal battery module 20 is located according to the data of the BMS system, drives all the reels 12 to rotate by controlling the driving member, releases the fireproof cloth 11 of all the fire-fighting areas 40, and opens the corresponding sprinkling electromagnetic valve 35 to connect the sprinkling branch pipe 33 of the fire-fighting area 40 where the temperature abnormal battery module 20 is located.

[0067] At this time, the BMS system data of the temperature abnormal battery module 20 is analyzed, if the temperature of the temperature abnormal battery module 20 returns to normal and the adjacent battery module 20 is normal, the monitoring stage is entered, if the temperature of the temperature abnormal battery module 20 does not return to normal or the adjacent battery module 20 is abnormal, the corresponding water sprinkling electromagnetic valve 44 is opened by the monitoring management system to connect the water sprinkling branch pipe 43 of the fire-fighting area 40 where the temperature abnormal battery module 20 is located.

[0068] The energy storage battery cabin fire extinguishing device provided by the embodiment can prevent normal battery modules 20 in the cabin from thermal runaway by setting a fireproof wall, thereby reducing the possibility of thermal runaway of the cabin and increasing the safety level of the energy storage battery cabin 10; the fire extinguishing agent unit can effectively extinguish the fire of the battery module 20 that has thermal runaway and effectively alleviate the water shortage problem of the energy storage power station in the northern region; the battery modules 20 in the energy storage battery cabin 10 are managed in different areas, which can effectively reduce the influence on other healthy batteries when thermal runaway occurs and reduce the maintenance cost of the energy storage battery cabin 10 in the later period.

[0069] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A fire extinguishing device for energy storage battery cabin, arranged in an energy storage battery cabin (10), a plurality of groups of battery modules (20) are arranged in the interior of the energy storage battery cabin (10) in a spaced manner, the battery module (20) comprises a plurality of groups of battery clusters (30) arranged in a spaced manner along the height direction, and two adjacent groups of the battery module (20) are a fire extinguishing area (40), characterized in that, The energy storage battery cabin fire extinguishing device comprises: A firewall assembly comprises a plurality of firewall units (1), each of which corresponds to a fire-fighting area (40). The firewall unit (1) comprises fireproof cloth (11) for isolating the corresponding fire-fighting area (40) from other fire-fighting areas (40) and separating two groups of battery modules (20) in the corresponding fire-fighting area (40). A spraying assembly comprises a fire extinguishing agent unit, which comprises a storage tank (31), a spraying main pipe (32), a spraying branch pipe (33), and a spraying head (34). The storage tank (31) stores fire extinguishing agent. The spraying main pipe (32) is connected to the storage tank (31). The spraying branch pipe (33) corresponds to the fire-fighting area (40). One end of the spraying branch pipe (33) is connected to the spraying main pipe (32), and the other end is clamped between the two groups of battery modules (20) in the corresponding fire-fighting area (40) and extends from the top to the bottom of the battery modules (20). The spraying branch pipe (33) is connected to a plurality of spraying heads (34) at intervals. The spraying head (34) extends away from the spraying branch pipe (33), and one spraying head (34) is arranged above each battery cluster (30). A monitoring and management system is configured to control the on-off of the spraying branch pipe (33) and the release or recovery of the fireproof cloth (11).

2. The energy storage battery compartment fire extinguishing apparatus of claim 1, wherein, The firewall unit (1) further comprises a reel (12) and a driving member. The reel (12) is rotatably arranged on a structural beam at the top of the energy storage battery cabin (10). The fireproof cloth (11) is wound around the reel (12), and the fixed end of the fireproof cloth (11) is fixed to the reel (12). The monitoring and management system is connected to the driving member and configured to control the driving member to drive the reel (12) to rotate to release or recover the fireproof cloth (11).

3. The energy storage battery compartment fire extinguishing apparatus of claim 1, wherein, The firewall unit (1) further comprises a gravity rod (13) arranged at the free end of the fireproof cloth (11).

4. The energy storage battery compartment fire extinguishing apparatus of claim 1, wherein, The connection between the spraying head (34) and the spraying branch pipe (33) is located directly above the middle region of the battery cluster (30), and the spraying head (34) extends bidirectionally along the width direction of the battery cluster (30).

5. The energy storage battery compartment fire extinguishing apparatus of claim 1, wherein, The spraying head (34) is a bidirectional spraying head, which is used to spray fire extinguishing agent upward and downward.

6. The energy storage battery compartment fire extinguishing apparatus of claim 1, wherein, A spraying electromagnetic valve (35) is arranged at the connection between the spraying branch pipe (33) and the spraying main pipe (32). The monitoring and management system is connected to the spraying electromagnetic valve (35). The monitoring and management system controls the on-off of the spraying electromagnetic valve (35) to control the on-off of the spraying branch pipe (33).

7. The energy storage battery compartment fire extinguishing apparatus of claim 1, wherein, The spraying assembly further comprises a water spraying unit, the water spraying unit comprising a water tank (41), a water spraying main pipe (42), water spraying branch pipes (43) and water spraying heads, the water spraying main pipe (42) being communicated with the water tank (41), the water spraying branch pipes (43) corresponding to the fire-fighting areas (40) one by one, one end of each of the water spraying branch pipes (43) being communicated with the water spraying main pipe (42), and the other end of each of the water spraying branch pipes (43) being orthographically projected between two groups of the battery modules (20) in the corresponding fire-fighting area (40).

8. The energy storage battery compartment fire extinguishing apparatus of claim 7, wherein, The energy storage battery cabin fire extinguishing device has a first state, in the first state, the temperature of one or two groups of the battery modules (20) in the energy storage battery cabin (10) is abnormal, the monitoring management system is configured to release the fireproof cloth (11) of the fire-fighting area (40) where the battery module (20) with abnormal temperature is located, and to control the corresponding water spraying branch pipe (43) to be connected after the corresponding spraying branch pipe (33) is connected.

9. The energy storage battery compartment fire extinguishing apparatus of claim 7, wherein, The energy storage battery cabin fire extinguishing device has a second state, in the second state, the temperature of more than two groups of the battery modules (20) in the energy storage battery cabin (10) is abnormal, the monitoring management system is configured to release the fireproof cloth (11) of all the fire-fighting areas (40), and to control the corresponding water spraying branch pipe (43) to be connected after the corresponding spraying branch pipe (33) of the fire-fighting area (40) where the battery module (20) with abnormal temperature is located is connected.

10. The energy storage battery compartment fire extinguishing apparatus of any one of claims 1-9, wherein, The energy storage battery cabin fire extinguishing device further comprises an infrared ball machine (2) installed in the energy storage battery cabin (10), and the monitoring management system is connected with the infrared ball machine (2) and the BMS system of the battery module (20).

Images