CN114768144A - Energy storage system and fire control method and device thereof - Google Patents
Energy storage system and fire control method and device thereof Download PDFInfo
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
- A62C37/40—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator
Abstract
The invention discloses an energy storage system and a fire control method and device thereof. The fire control method of the energy storage system comprises the following steps: acquiring abnormal gas data in the energy storage system; if the abnormal gas data is within a first preset range, performing primary fire-fighting early warning; and if the abnormal gas data exceeds the first preset range and reaches the second preset range within the first preset time after the primary fire-fighting early warning is carried out, carrying out first-stage fire-fighting warning and implementing risk reduction treatment. The scheme provided by the embodiment of the invention can improve the safety of the energy storage system.
Description
Technical Field
The embodiment of the invention relates to a fire fighting technology, in particular to an energy storage system and a fire fighting control method and device thereof.
Background
The electrochemical energy storage system has the advantages of short construction period, flexible distribution, high energy density and the like, and the number of the electrochemical energy storage systems is rapidly increased along with the increase of scientific and technological development and market demands in recent years.
However, with the increase of the electrochemical energy storage packaging capacity and the vigorous development of the energy storage market, the safety problem of the electrochemical energy storage battery is more and more concerned. The existing fire-fighting early warning scheme of the energy storage system is that when the electrochemical energy storage battery is detected to be out of control due to heat, operation and maintenance personnel are prompted in an alarming mode and adopt a corresponding mode to avoid fire accidents.
However, the warning time of the early warning mode is often closer to the time of the occurrence of the follow-up fire accident, the thermal runaway safety intervention time is shorter, and the safety is poorer.
Disclosure of Invention
The invention provides an energy storage system and a fire control method and device thereof, which are used for improving the safety of the energy storage system.
In a first aspect, an embodiment of the present invention provides a fire control method for an energy storage system, where the fire control method for the energy storage system includes:
acquiring abnormal gas data in the energy storage system;
if the abnormal gas data is within a first preset range, performing primary fire-fighting early warning;
and if the abnormal gas data exceeds the first preset range and reaches the second preset range within the first preset time after the primary fire-fighting early warning is carried out, carrying out first-stage fire-fighting warning and implementing risk reduction treatment.
Optionally, while the risk reduction processing is performed, the method further includes:
acquiring state data of each energy storage battery in the energy storage system;
and determining the position of the energy storage battery in which thermal runaway occurs according to the abnormal value in the state data, and generating a positioning signal.
Optionally, the status data comprises temperature data and pressure data; determining the position of the energy storage battery in which thermal runaway occurs according to the abnormal value in the state data, and generating a positioning signal, wherein the positioning signal comprises the following steps:
if at least one of the temperature data or the pressure data is an abnormal value, determining the abnormal temperature data and/or the energy storage battery corresponding to the data as a thermal runaway battery;
and generating the positioning signal according to the position and/or the number of the thermal runaway battery.
Optionally, the anomalous gas data comprises an anomalous gas concentration and/or an anomalous gas growth rate.
Optionally, the first preset range is that the abnormal gas concentration is greater than or equal to a first preset concentration.
Optionally, the second preset range includes: the concentration of the abnormal gas is larger than a second preset concentration, and/or the growth rate of the abnormal gas is larger than a first preset growth rate.
Optionally, the risk reduction process comprises at least one of:
carrying out air exhaust operation on the energy storage system; and reducing the working power of the energy storage system.
Optionally, after performing the first-level fire alarm and performing the risk reduction processing, the method further includes:
and if the abnormal gas data does not have a trend of reduction within second preset time after risk reduction treatment is carried out, carrying out second-level fire alarm and carrying out fire extinguishing treatment.
Optionally, the conditions for performing the second level fire alarm and performing the fire extinguishing process further comprise: and the temperature data of the energy storage batteries in the energy storage system are all larger than or equal to a preset temperature value.
Optionally, after performing the first-level fire alarm and performing the risk reduction processing, the method further includes:
and if the abnormal gas data is out of a first preset range, removing the first-level fire alarm and the risk reduction treatment.
Optionally, the anomalous gas comprises carbon dioxide and/or carbon monoxide.
In a second aspect, an embodiment of the present invention further provides a fire control device for an energy storage system, where the fire control device for an energy storage system includes: a gas data acquisition module, a primary early warning module and a first-level fire alarm module,
the gas data acquisition module is used for acquiring abnormal gas data in the energy storage system;
the primary early warning module is used for carrying out primary fire-fighting early warning if the abnormal gas data is within a first preset range;
and the first-level fire-fighting alarm module is used for carrying out first-level fire-fighting alarm and implementing risk reduction treatment if the abnormal gas data exceeds the first preset range and reaches the second preset range within the first preset time after the primary fire-fighting early warning is carried out.
In a third aspect, an embodiment of the present invention further provides an energy storage system, where the energy storage system includes: the fire fighting system comprises a power module, a plurality of energy storage batteries, a fire fighting module and a control module; the control module is respectively connected with the power module and the fire-fighting module and is used for executing the fire-fighting control method of the energy storage system in any of the first aspect.
According to the energy storage system and the fire control method and device thereof, the abnormal gas data in the energy storage system are obtained, primary fire early warning is carried out when the abnormal gas data are in the first preset range, and operation and maintenance personnel are reminded to overhaul. Abnormal gas data is when first preset scope, and energy storage system still has certain time apart from taking place the thermal runaway trouble, carries out elementary fire control early warning this moment and can strive for more maintenance time before taking place the fire incident. Within a first preset time after the primary fire-fighting early warning, if the abnormal gas data exceeds a first preset range and reaches a second preset range, a first-level fire-fighting alarm is carried out and risk reduction processing is carried out, the risk of fire accidents is reduced, and grading early warning and risk reduction processing according to the abnormal gas data are realized. According to the method, the stage-by-stage early warning and the corresponding processing are carried out according to the range of the abnormal gas data, and the longer processing time is obtained through the dual measures of stage-by-stage early warning and risk reduction processing, so that the probability of fire accidents is reduced, and the safety of the energy storage system is improved.
Drawings
Fig. 1 is a schematic flow chart of a fire control method for an energy storage system according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of another fire control method for an energy storage system according to an embodiment of the present invention;
fig. 3 is a schematic flowchart of a fire fighting control method for another energy storage system according to an embodiment of the present invention;
fig. 4 is a schematic flowchart of a fire fighting control method for another energy storage system according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a fire fighting control device of an energy storage system according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an energy storage system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings, not all of them.
In order to solve the problems in the background art, embodiments of the present invention provide a fire control method for an energy storage system, which may be performed by a fire control device of the energy storage system, where the fire control device may be implemented by software and/or hardware, and the fire control device may be integrated in a control module of the energy storage system. Fig. 1 is a schematic flow chart of a fire control method for an energy storage system according to an embodiment of the present invention, and referring to fig. 1, the fire control method for the energy storage system includes the following steps:
s101, abnormal gas data inside the energy storage system are obtained.
The abnormal gas refers to gas generated by an energy storage battery in the energy storage system due to an abnormal working state. The abnormal working state can be short circuit, overcharge, overdischarge, overcurrent and other abnormal working states, and the thermal runaway accident and even the fire-fighting accident can easily occur to the energy storage battery under the abnormal working state.
Specifically, the energy storage system includes a plurality of energy storage cells. Under the condition that the energy storage system works normally, the abnormal gas data are in a stable state, and once the energy storage battery is close to an abnormal working state, for example, the energy storage battery is close to the abnormal working state, a small amount of abnormal gas can be generated when the charging current of the energy storage battery is close to an overcurrent threshold value, so that the abnormal gas data fluctuate slightly. Therefore, abnormal gas data in the energy storage system can be obtained to judge whether the battery has the risk of thermal runaway accidents. The anomalous gas can include a plurality of species, and illustratively, the anomalous gas can include at least one of hydrogen, methane, ammonia, carbon monoxide, and carbon dioxide. Preferably, the abnormal gas may be at least one of carbon dioxide and carbon monoxide, which may reduce the difficulty and cost of detecting the abnormal gas. The abnormal gas data is data that can indicate a risk of thermal runaway occurring, and may be, for example, at least one of a concentration, a proportion, and a growth rate of the abnormal gas.
And S102, if the abnormal gas data is within a first preset range, carrying out primary fire-fighting early warning.
The first preset range is a primary abnormal range of abnormal gas data and can be obtained according to thermal runaway test data, simulation data or empirical data of the energy storage battery.
Specifically, if the abnormal gas data is within a first preset range, it indicates that the energy storage battery in the energy storage system is close to or reaches an abnormal working state, the abnormal gas data fluctuates within a small range, and the energy storage battery at this time has a possibility of thermal runaway, and primary fire warning needs to be performed. The primary fire early warning can remind operation and maintenance personnel that abnormal gas data in the energy storage system fluctuates, and the operation and maintenance personnel is prompted to carry out operations such as overhaul operation or power reduction.
S103, if the abnormal gas data exceeds a first preset range and reaches a second preset range within a first preset time after the primary fire-fighting early warning is carried out, carrying out a first-level fire-fighting warning and implementing risk reduction treatment.
And when the abnormal gas data exceeds the first preset range, the abnormal gas is not controlled, namely the possibility of thermal runaway in the energy storage system is further increased. The second preset range is an abnormal range of abnormal gas data and can be obtained according to thermal runaway test data, simulation data or empirical data of the energy storage battery. The first level of fire alarm is an alarm operation indicating that an early abnormality has occurred, and can be clearly distinguished from the primary fire warning. The risk reduction treatment refers to operation capable of reducing the risks of thermal runaway and fire accidents of the energy storage system.
Specifically, the first preset time can be a time range set according to experience data and experimental data, the first preset time is a time period when the energy storage system has a fault risk, the first preset time is exceeded after the primary fire early warning, the possibility that the energy storage system has a thermal runaway fault is greatly reduced, and the fault probability can be approximately equal to 0. The abnormal gas data can be collected in real time within the first preset time, and the relative relation between the real-time abnormal gas data and the first preset range and the relative relation between the real-time abnormal gas data and the second preset range are judged. And if the abnormal gas data exceeds the first preset range and reaches the second preset range, the early abnormality of the energy storage system is indicated, and the abnormal gas data obviously fluctuates. Illustratively, the abnormal gas data fluctuation obviously can be a large proportion of the increase of the concentration of the abnormal gas, and can also be a large change of the proportion of a plurality of abnormal gases. The early abnormality is a condition that the energy storage battery is in an abnormal working state in the energy storage system, preferably, the early abnormality may be an early stage of a thermal runaway accident, at which only high heat and abnormal gas data fluctuation occurs, and a fire condition does not occur yet. If the abnormal gas data exceeds the first preset range and reaches the second preset range, a first-level fire alarm is immediately sent out to warn operation and maintenance personnel to intervene for inspection and eliminate risks immediately, and meanwhile, risk reduction processing is carried out on the energy storage system. For example, the risk reduction treatment can be implemented by exhausting, reducing temperature, reducing power and the like. And if the abnormal gas data still does not exceed the first preset range within the first preset time, the possibility of thermal runaway and fire accidents is low, the measures which are taken by the possible operation and maintenance personnel in response to the primary fire early warning have the function of preventing the thermal runaway, the safety of the energy storage system can be determined at the moment, and the step S101 is returned to continue to monitor the abnormal gas data in the energy storage system.
According to the fire control method for the energy storage system, abnormal gas data in the energy storage system are obtained, primary fire early warning is carried out when the abnormal gas data are in a first preset range, and operation and maintenance personnel are reminded to overhaul. Abnormal gas data is when first preset scope, and energy storage system still has a certain time apart from taking place the thermal runaway trouble, carries out elementary fire control early warning this moment and can strive for more maintenance time before taking place the fire incident. Within the first preset time after the primary fire-fighting early warning, if the abnormal gas data exceeds the first preset range and reaches the second preset range, the first-level fire-fighting alarm is carried out, the risk reduction treatment is carried out, the risk of fire-fighting accidents is reduced, and the classified early warning and the risk reduction treatment according to the abnormal gas data are realized. According to the method, the early warning and the corresponding processing are carried out in stages according to the range of the abnormal gas data, and the long processing time is obtained through the dual measures of early warning in stages and risk reduction processing, so that the probability of fire accidents is reduced, and the safety of the energy storage system is improved.
On the basis of the foregoing embodiments, optionally, fig. 2 is a schematic flow chart of another fire control method for an energy storage system according to an embodiment of the present invention, and referring to fig. 2, the fire control method for an energy storage system includes the following steps:
s201, obtaining abnormal gas data in the energy storage system.
S202, if the abnormal gas data is within a first preset range, primary fire-fighting early warning is carried out.
S203, if the abnormal gas data exceeds a first preset range and reaches a second preset range within a first preset time after the primary fire-fighting early warning is carried out, carrying out a first-level fire-fighting warning and implementing risk reduction treatment.
Wherein, steps S201, S202, and S203 are the same as steps S101, S102, and S103, respectively, and are not described herein again,
in addition, when carrying out first level fire alarm and implementing the processing of reducing the risk, still include:
and S204, acquiring state data of each energy storage battery in the energy storage system.
The state data of the energy storage battery refers to state data related to a thermal runaway accident.
Specifically, if a first-level fire alarm is performed and risk reduction processing is performed, it indicates that an early-stage abnormality has occurred in the energy storage system, and the first-level fire alarm is performed to warn operation and maintenance personnel to take measures corresponding to the energy storage system as soon as possible, where the early-stage abnormality is an early stage of thermal runaway. The energy storage system generally includes a plurality of energy storage batteries, and the operation and maintenance personnel need to take measures to further locate the energy storage battery with the thermal runaway fault. Considering that the state data of the energy storage batteries are different under different operation states, the specific energy storage batteries can be determined to have thermal runaway faults according to the state parameters of the energy storage batteries. At this time, state parameters of each energy storage battery in the energy storage system are obtained, the state parameters are parameters related to the thermal runaway accident in each parameter of the energy storage battery, and may include various parameters, and for example, the state parameters of the energy storage battery may be temperature and internal resistance in the energy storage battery.
S205, determining the position of the energy storage battery in thermal runaway according to the abnormal value in the state data, and generating a positioning signal.
The abnormal value in the state data refers to the state data of each energy storage battery outside the normal range.
Specifically, according to whether the state data of each energy storage battery is in a normal range or not, an abnormal value of the state data of each energy storage battery can be determined, and then the energy storage battery with thermal runaway is determined according to the abnormal value. The judgment standard may be preset according to experience and a thermal runaway test, and for example, the energy storage batteries corresponding to the abnormal value in the state data may be all identified as thermal runaway batteries, or the energy storage batteries corresponding to the abnormal value with the largest deviation from the normal range in the state data may be identified as thermal runaway batteries. The installation positions of the energy storage batteries are different and can be embodied by various data, for example, each energy storage battery can correspond to a number, and each energy storage battery can also correspond to a string of position information, which is not limited herein. According to the position generation locating signal of the energy storage battery that takes place the thermal runaway, locating signal can include positional information and serial number information, makes things convenient for fortune dimension personnel to fix a position the energy storage battery that the thermal runaway fast to take corresponding counter-measure, can practice thrift processing time, promoted the counter-measure efficiency of fire control method.
According to the fire control method of the energy storage system, the step of determining the specific position of the energy storage battery in thermal runaway according to the state data of the energy storage system is added. Considering that the state data of the energy storage battery is different in different running states, the positioning signal is generated according to the position of the energy storage battery in which the thermal runaway occurs, operation and maintenance personnel can conveniently and quickly position the energy storage battery in the thermal runaway, corresponding countermeasures are taken, the processing time can be saved, and the processing efficiency of the fire control method is improved.
On the basis of the foregoing embodiments, optionally, fig. 3 is a schematic flow chart of a fire control method for another energy storage system according to an embodiment of the present invention, and referring to fig. 3, the fire control method for an energy storage system includes the following steps:
s301, obtaining abnormal gas data in the energy storage system.
S302, if the abnormal gas data is within a first preset range, primary fire-fighting early warning is carried out.
And S303, if the abnormal gas data exceeds a first preset range and reaches a second preset range within a first preset time after the primary fire-fighting early warning is carried out, carrying out a first-level fire-fighting warning and implementing risk reduction treatment.
And S304, acquiring the state data of each energy storage battery in the energy storage system.
The contents of steps S301, S302, S303 and S304 are the same as the contents of steps S201, S202, S203 and S204, respectively, and are not described herein again. It should be noted that the status data in step S304 includes temperature data and pressure data. The temperature data refers to the real-time temperature of the energy storage battery, and the temperature data may be the surface temperature of the energy storage battery, and preferably, the temperature data may also be the internal cell temperature of the energy storage battery or the average temperature of each internal position. The pressure data refers to a real-time pressure value inside the energy storage battery, and can be measured in real time by using a pressure sensing device.
S305, if at least one of the temperature data or the pressure data is an abnormal value, determining the abnormal temperature data and/or the energy storage battery corresponding to the abnormal data as a thermal runaway battery.
Wherein, the abnormal value refers to temperature data exceeding a normal temperature range or pressure data exceeding a normal pressure range.
Specifically, real-time temperature data and real-time pressure data of each energy storage battery in the energy storage system are collected, the temperature data of all the energy storage batteries collected at the same time are used as a group of temperature data, and similarly, the pressure data of all the energy storage batteries collected at the same time are used as a group of pressure data, so that the number of data in the group of temperature data and the number of data in the group of pressure data are the same as the number of the energy storage batteries in the energy storage system. And then determining an abnormal value in the same group of temperature data and/or an abnormal value in the same group of pressure data in real time, and determining the energy storage battery corresponding to the abnormal temperature data and/or the abnormal pressure data as the thermal runaway battery.
And S306, generating a positioning signal according to the position and/or the number of the thermal runaway battery.
The position refers to a specific position where the energy storage battery is placed in the energy storage system, the number refers to the unique number of the energy storage battery, and the number corresponds to the energy storage battery in the energy storage system one to one.
Specifically, a positioning signal is generated according to the position and/or number of the energy storage battery in which the thermal runaway occurs, the positioning signal includes the number and/or position of all energy storage batteries in which the thermal runaway occurs, and the position information may be in various forms, and may be, for example, a position indication map, and may also be indication information including the second in the several rows. The serial numbers correspond to the energy storage batteries in the energy storage system one by one, so that operation and maintenance personnel can quickly determine the energy storage battery with thermal runaway in the energy storage system according to the unique serial number and carry out manual treatment such as closing, isolation, disconnection, local cooling and the like on the energy storage battery.
The fire control method for the energy storage system provided by this embodiment obtains the state data of each energy storage battery in the energy storage system while performing risk reduction processing, and then determines the position of the energy storage battery in which thermal runaway occurs according to the abnormal value in the state data, and generates a positioning signal.
On the basis of the foregoing embodiments, optionally, the anomalous gas comprises carbon monoxide and/or carbon dioxide. The anomalous gas data includes an anomalous gas concentration and/or an anomalous gas growth rate.
Wherein, carbon monoxide is a toxic gas generated when the energy storage battery works in an abnormal state. Carbon dioxide is another gas generated by the energy storage battery in an abnormal state, and both gases are highly related to the thermal runaway accident of the energy storage battery.
Specifically, when the energy storage battery works in an abnormal state or a thermal runaway accident occurs, carbon monoxide and carbon dioxide are generated, and the concentration and the growth rate are positively correlated with the severity of the accident. The concentration of the abnormal gas and the growth rate of the abnormal gas can reflect the severity of the accident, so that whether the energy storage battery has a thermal runaway accident or works in an abnormal working state can be judged according to the concentration and the growth rate of the carbon dioxide and the carbon monoxide, the severity of the accident at the moment can be further judged, and the accuracy of the fire control method can be improved. The inventor researches and discovers that the carbon monoxide and the carbon dioxide have larger occupation ratio in the abnormal gas, the detection is convenient, the cost for measuring the carbon monoxide and the carbon dioxide is lower compared with other abnormal gases such as ammonia gas, and the fire control cost of the energy storage system can be reduced.
On the basis of the foregoing embodiments, optionally, the first preset range is that the abnormal gas concentration is greater than or equal to a first preset concentration.
The first preset concentration is a first concentration threshold of the concentration of the abnormal gas, and can be set according to experience and experimental data.
Specifically, when the concentration of the abnormal gas is greater than or equal to a first preset concentration, it can be determined that an energy storage battery in the energy storage system is close to an abnormal working state, the concentration of the abnormal gas is increased within a small range, the energy storage battery has the possibility of thermal runaway, and primary fire-fighting early warning needs to be carried out. Illustratively, the first preset concentration may be 35%.
According to the fire control method of the energy storage system, the situation that the concentration of the abnormal gas is larger than or equal to the first preset concentration can be determined, the energy storage battery of the energy storage system is close to the abnormal working state, and then primary fire early warning is carried out according to the concentration of the abnormal gas before an accident happens, so that the probability of thermal runaway can be reduced, and the reliability of the fire control method is improved.
On the basis of the foregoing embodiments, optionally, the second preset range includes: the abnormal gas concentration is greater than the second preset concentration, and/or the abnormal gas growth rate is greater than the first preset growth rate.
The second preset concentration is a second concentration threshold of the abnormal gas, and the second preset concentration is greater than the first preset concentration and can be set according to experience and experimental data. The first preset growth rate is a growth rate threshold of the anomalous gas, and can be set according to experience and experimental data.
Specifically, when an energy storage battery in the energy storage system has a thermal runaway accident, the abnormal gas data may fluctuate more sharply, which may be expressed as a change in the concentration of the abnormal gas and a change in the growth rate of the abnormal gas. Therefore, under the condition that the concentration of the abnormal gas exceeds the first preset concentration and is greater than the second preset concentration or/and the condition that the growth rate of the abnormal gas is greater than the first preset growth rate, the condition that an energy storage battery in the energy storage system is in the early stage of thermal runaway fault can be determined, and first-stage fire alarm can be carried out and risk reduction processing can be carried out.
In the fire control method for the energy storage system provided by this embodiment, under the condition that the concentration of the abnormal gas is greater than the second preset concentration and/or the increase rate of the abnormal gas is greater than the first preset increase rate, it is determined that an energy storage battery in the energy storage system is in an early stage of a thermal runaway fault, a first-stage fire alarm is performed and risk reduction processing is performed, a first-stage fire alarm and a Jianfengxiang processing of the energy storage system are realized, and the reliability of the fire control method can be further improved by adopting preset values of two parameters related to the thermal runaway fault as a judgment threshold value for judgment.
On the basis of the foregoing embodiments, optionally, the risk reduction process includes at least one of the following processes: carrying out air exhaust operation on the energy storage system; and the working power of the energy storage system is reduced.
The exhaust operation refers to exhausting abnormal gas in the energy storage system so as to rapidly reduce the concentration of the abnormal gas in the energy storage system. Reducing the working power of the energy storage system means reducing the charging and discharging power of each energy storage battery in the energy storage system to reduce the charging and discharging current of the energy storage battery and reduce heat generation.
Specifically, the operation of airing exhaust can be controlled and implemented through multiple mode, exemplarily, can realize through opening the exhaust fan, improve the operating power of exhaust fan, can also realize through the mode of popping out electrically operated door and the window of energy storage system place box. The working power of the energy storage system can be reduced in various embodiments, for example, the working power of the energy storage battery can be reduced by controlling the power module corresponding to the energy storage battery, and the power module corresponding to the energy storage battery can be turned off to stop charging and discharging of the energy storage battery.
According to the fire control method for the energy storage system, risk reduction treatment can be achieved through at least one of two modes of air exhaust operation and reduction of working power of the energy storage system, the probability of further development of thermal runaway of the energy storage battery can be reduced, the thermal runaway fault is prevented from being converted into a fire accident, and the reliability of the fire control method is further improved.
On the basis of the foregoing embodiments, optionally, fig. 4 is a flowchart illustrating a fire control method for an energy storage system according to another embodiment of the present invention, and referring to fig. 4, the fire control method for an energy storage system includes the following steps:
s401, obtaining abnormal gas data in the energy storage system.
S402, if the abnormal gas data are within a first preset range, primary fire-fighting early warning is conducted.
And S403, if the abnormal gas data exceeds a first preset range and reaches a second preset range within a first preset time after the primary fire-fighting early warning is carried out, carrying out a first-level fire-fighting warning and implementing risk reduction treatment.
The contents of steps S401, S402 and S403 are the same as those of steps S301, S302 and S303, respectively, and are not described herein again.
And S404, if the abnormal gas data does not have a trend of decreasing within second preset time after risk reduction treatment is carried out, carrying out second-level fire alarm and carrying out fire extinguishing treatment.
The fire extinguishing treatment refers to fire extinguishing operation of the energy storage system, and can include ventilation closing and fire extinguishing.
Specifically, after risk reduction processing is performed, abnormal gas data is detected in real time. Within the second preset time after the risk reduction treatment is implemented, if the abnormal gas data is determined not to have a reduction trend, it is indicated that the risk reduction treatment does not achieve the probability of reducing the further development of the thermal runaway accident, and the fire accident occurs or has already occurred at a high probability, at this moment, a second-level fire alarm can be performed, and the second-level fire alarm needs to be different from the first-level fire alarm and the primary fire early warning, so that greater attention and alertness of operation and maintenance personnel are caused. Meanwhile, the energy storage system is subjected to real-time fire extinguishing treatment, the exhaust of the energy storage system needs to be closed firstly when the fire extinguishing treatment is started, and then fire extinguishing operation is carried out, wherein the fire extinguishing operation can comprise spraying and fire extinguishing. And if the abnormal gas data is reduced but not reduced to be out of the first preset range and the second preset range, the first-stage fire alarm and risk reduction processing can be implemented again to promote further reduction of the abnormal gas data.
S405, if the abnormal gas data is out of the first preset range and the second preset range within the second preset time after the risk reduction treatment is carried out, the first-level fire alarm is released and the risk reduction treatment is carried out.
The abnormal gas data is out of the first preset range and the second preset range, and the abnormal gas data is lower than the range in which early warning and alarming are needed.
Specifically, after risk reduction processing is performed, abnormal gas data is detected in real time. Within the second preset time after the risk reduction treatment is carried out, if the abnormal gas data are determined to be out of the first preset range and the second preset range, the fact that the energy storage system is restored to the normal state through manual treatment and risk reduction treatment is indicated, at the moment, alarming, early warning and risk treatment do not need to be carried out, and the energy storage system can work normally. At this point, the first level fire alarm and risk reduction processing may be stopped. Further, when the first-level fire alarm and risk reduction processing are stopped, a troubleshooting signal can be sent to operation and maintenance personnel to remind the operation and maintenance personnel to troubleshoot the cause of the fault in the future, abnormal gas data in the energy storage system is detected again after a preset time period, and normal operation of the energy storage system is recovered after the fact that no abnormality exists is confirmed.
According to the fire control method of the energy storage system, whether second-level fire alarm is needed and fire extinguishing processing is implemented is determined according to changes of abnormal gas data within second preset time after first-level fire alarm and risk reduction processing are implemented, second-level fire alarm and fire extinguishing processing are implemented under the condition that the abnormal gas data do not drop, first-level fire alarm and risk reduction processing are removed when the abnormal gas data drop beyond a first preset range and a second preset range, automatic fire extinguishing and recovery operation of the energy storage system are achieved, automation of the energy storage system in fire fighting problem processing is improved, and influences of fire accidents on normal work of the energy storage system are reduced.
On the basis of the foregoing embodiments, optionally, the condition for performing the second-level fire alarm and performing the fire extinguishing process further includes: the temperature data of the energy storage batteries in the energy storage system are all larger than or equal to a preset temperature value.
The temperature data of the energy storage battery is the temperature value inside the energy storage battery, the change of the ignition risk of the energy storage battery can be reflected, whether fire fighting is implemented or not is determined according to the temperature, and the scientificity and the reliability of the fire fighting control method of the energy storage system are improved.
The embodiment of the invention also provides a fire control device of the energy storage system. Fig. 5 is a schematic structural diagram of a fire fighting control device of an energy storage system according to an embodiment of the present invention, and referring to fig. 5, the fire fighting control device 500 of the energy storage system includes: the system comprises a gas data acquisition module 501, a primary early warning module 502 and a first-stage fire alarm module 503, wherein the gas data acquisition module 501 is used for acquiring abnormal gas data in the energy storage system; the primary early warning module 502 is used for performing primary fire-fighting early warning if the abnormal gas data is within a first preset range; the first-level fire alarm module 503 is configured to perform a first-level fire alarm and perform risk reduction processing if the abnormal gas data exceeds a first preset range and reaches a second preset range within a first preset time after the primary fire early warning is performed.
The fire control controlling means of energy storage system that this embodiment provided, gas data acquisition module acquire unusual gas data among the energy storage system, and elementary early warning module can carry out elementary fire control early warning when unusual gas data is in first preset range, reminds the operation and maintenance personnel to overhaul, reduces the probability that thermal runaway appears. First level fire control warning module is in the first time of predetermineeing behind elementary fire control early warning, if unusual gaseous data surpass first predetermined scope and reach the second and predetermine the scope, then carry out first level fire control and report an emergency and ask for help or increased vigilance and implement the risk processing that falls, reduce the risk that the fire incident appears, the hierarchical early warning according to unusual gaseous data and the risk processing that falls have been realized, carry out the early warning at energy storage system's abnormal operation initial stage, reserve longer processing time for the operation and maintenance personnel, and then report an emergency and ask for help or increased vigilance and automatic processing when taking place unusually not causing the fire incident, through automatic processing and report an emergency and ask for help or increased vigilance dual measure, the probability of taking place the fire incident has been reduced, energy storage system's security has been improved.
On the basis of the foregoing embodiments, optionally, the fire fighting control device of the energy storage system further includes: the system comprises a state data acquisition module and a positioning signal generation module, wherein the state data acquisition module is used for acquiring state data of each energy storage battery in the energy storage system; and the positioning signal generation module is used for determining the position of the energy storage battery in thermal runaway according to the abnormal value in the state data and generating a positioning signal.
The fire control controlling means of energy storage system that this embodiment provided generates positioning signal according to the position that takes place the energy storage battery of thermal runaway, and positioning signal can include positional information and serial number information, makes things convenient for the quick energy storage battery of thermal runaway of location of fortune dimension personnel to take corresponding counter measure, can save processing time, promoted the counter efficiency of fire control method.
On the basis of the foregoing embodiments, optionally, the fire fighting control device of the energy storage system further includes: the second-level fire-fighting alarm module is used for carrying out second-level fire-fighting alarm and carrying out fire extinguishing treatment if abnormal gas data does not have a trend of reduction within second preset time after risk reduction treatment is carried out. The alarm removing module is used for removing the first-level fire alarm and risk reduction processing if the abnormal gas data is out of a first preset range.
The energy storage system's fire control controlling means that this embodiment provided, in the second preset time after carrying out the first level fire control and reporting an emergency and handle, the second level fire control is reported an emergency and is confirmed whether need to carry out the second level fire control according to the change of abnormal gas data and is reported an emergency and ask for help or increased vigilance and implement the processing of putting out a fire, carry out the second level fire control and report an emergency and ask for help or increased vigilance and implement the processing of putting out a fire under the condition that abnormal gas data does not descend, it reports an emergency and asks for help or increased vigilance to remove the first level fire control and report an emergency and handle when abnormal gas data falls outside first preset scope and the second preset scope, energy storage system's automatic fire extinguishing and recovery operation have been realized, energy storage system's fire control device's automation of handling the fire control problem has been improved, the influence of fire incident on energy storage system normal work has been reduced.
An embodiment of the present invention further provides an energy storage system, fig. 6 is a schematic structural diagram of an energy storage system provided in an embodiment of the present invention, and referring to fig. 6, an energy storage system 600 includes: a power module 601, a plurality of energy storage batteries 602, a fire fighting module 603, and a control module 604; the control module 604 is respectively connected to the power module 601 and the fire fighting module 603, and the control module 604 is configured to execute the fire fighting control method of the energy storage system as claimed in any of the above claims.
Specifically, the power module 601 may control the operating power of each energy storage cell 602. The fire module 603 includes an early fire detection system 606 and a fire suppression system 605. the early fire detection system 606 may include an anomalous gas sensing device that may collect data regarding the concentration, rate of growth, and/or any other anomalous gas within the energy storage system 600. The early fire detection system 606 is also coupled to the temperature and pressure sensors, respectively, and is also configured to communicate temperature and pressure data to the control module 604. The fire suppression system 605 includes a venting device and a fire suppression device. The control module 604 is connected to the power module 601 and the fire fighting module, respectively, and integrates the fire fighting control device of the energy storage system described in the foregoing embodiment, so as to execute the fire fighting control method of any of the foregoing energy storage systems.
According to the energy storage system and the fire control method and device thereof, the abnormal gas data in the energy storage system are obtained, primary fire early warning is carried out when the abnormal gas data are in the first preset range, and operation and maintenance personnel are reminded to overhaul. Abnormal gas data is when first preset scope, and energy storage system still has certain time apart from taking place the thermal runaway trouble, carries out elementary fire control early warning this moment and can strive for more maintenance time before taking place the fire incident. Within a first preset time after the primary fire-fighting early warning, if the abnormal gas data exceeds a first preset range and reaches a second preset range, a first-level fire-fighting alarm is carried out and risk reduction processing is carried out, the risk of fire accidents is reduced, and grading early warning and risk reduction processing according to the abnormal gas data are realized. According to the method, the stage-by-stage early warning and the corresponding processing are carried out according to the range of the abnormal gas data, and the longer processing time is obtained through the dual measures of stage-by-stage early warning and risk reduction processing, so that the probability of fire accidents is reduced, and the safety of the energy storage system is improved.
It is to be noted that the foregoing description is only exemplary of the invention and that the principles of the technology may be employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in some detail by the above embodiments, the invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the invention, and the scope of the invention is determined by the scope of the appended claims.
Claims (13)
1. A fire control method of an energy storage system, comprising:
acquiring abnormal gas data in the energy storage system;
if the abnormal gas data is within a first preset range, performing primary fire-fighting early warning;
and if the abnormal gas data exceeds the first preset range and reaches the second preset range within the first preset time after the primary fire-fighting early warning is carried out, carrying out first-stage fire-fighting warning and implementing risk reduction treatment.
2. The fire fighting control method according to claim 1, further comprising, while performing the risk reduction process:
acquiring state data of each energy storage battery in the energy storage system;
and determining the position of the energy storage battery in which thermal runaway occurs according to the abnormal value in the state data, and generating a positioning signal.
3. A fire control method of an energy storage system as claimed in claim 2, wherein the status data includes temperature data and pressure data; determining the position of the energy storage battery in which thermal runaway occurs according to the abnormal value in the state data, and generating a positioning signal, wherein the positioning signal comprises the following steps:
if at least one of the temperature data or the pressure data is an abnormal value, determining the abnormal temperature data and/or the energy storage battery corresponding to the data as a thermal runaway battery;
and generating the positioning signal according to the position and/or the number of the thermal runaway battery.
4. A fire control method of the energy storage system according to claim 1, wherein the abnormal gas includes carbon dioxide and/or carbon monoxide.
5. The fire control method of the energy storage system of claim 1, wherein the anomalous gas data includes an anomalous gas concentration and/or an anomalous gas growth rate.
6. A fire control method of the energy storage system according to claim 3, wherein the first predetermined range is that the abnormal gas concentration is greater than or equal to a first predetermined concentration.
7. A fire control method of the energy storage system according to claim 5, wherein the second preset range comprises: the concentration of the abnormal gas is larger than a second preset concentration, and/or the growth rate of the abnormal gas is larger than a first preset growth rate.
8. The fire control method of the energy storage system of claim 1, wherein the risk reduction process comprises at least one of:
carrying out air exhaust operation on the energy storage system; and reducing the working power of the energy storage system.
9. A fire control method for an energy storage system as recited in claim 1, further comprising, after performing a first level fire alarm and performing a risk reduction process:
and if the abnormal gas data does not have a trend of reduction within second preset time after risk reduction treatment is carried out, carrying out second-level fire alarm and carrying out fire extinguishing treatment.
10. A fire control method for an energy storage system as recited in claim 9, wherein the conditions for performing a second level fire alarm and performing a fire suppression process further comprise: and the temperature data of the energy storage batteries in the energy storage system are all larger than or equal to a preset temperature value.
11. A fire control method for an energy storage system according to claim 1, further comprising, after performing a first level fire alarm and performing a risk reduction process:
and if the abnormal gas data is out of a first preset range, removing the first-level fire alarm and the risk reduction treatment.
12. A fire control device for an energy storage system, comprising:
the gas data acquisition module is used for acquiring abnormal gas data in the energy storage system;
the primary early warning module is used for carrying out primary fire-fighting early warning if the abnormal gas data is within a first preset range;
and the first-level fire alarm module is used for performing first-level fire alarm and performing risk reduction processing if the abnormal gas data exceeds the first preset range and reaches the second preset range within the first preset time after the primary fire early warning is performed.
13. An energy storage system, comprising: the fire fighting system comprises a power module, a plurality of energy storage batteries, a fire fighting module and a control module; the control module is respectively connected with the power module and the fire fighting module and is used for executing the fire fighting control method of the energy storage system according to any one of claims 1 to 11.
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