CN115581873A - Intelligent fire-fighting system for power conversion station - Google Patents

Intelligent fire-fighting system for power conversion station Download PDF

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Publication number
CN115581873A
CN115581873A CN202211287309.4A CN202211287309A CN115581873A CN 115581873 A CN115581873 A CN 115581873A CN 202211287309 A CN202211287309 A CN 202211287309A CN 115581873 A CN115581873 A CN 115581873A
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China
Prior art keywords
fire
station
battery pack
power
control system
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Application number
CN202211287309.4A
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Chinese (zh)
Inventor
钱磊
蒋德南
许雪峰
王清峰
余志钢
朱宇涛
吴丹铌
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Jiangyin Pavote Lifting Machinery Co ltd
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Jiangyin Pavote Lifting Machinery Co ltd
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Application filed by Jiangyin Pavote Lifting Machinery Co ltd filed Critical Jiangyin Pavote Lifting Machinery Co ltd
Priority to CN202211287309.4A priority Critical patent/CN115581873A/en
Publication of CN115581873A publication Critical patent/CN115581873A/en
Pending legal-status Critical Current

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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
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/02—Nozzles specially adapted for fire-extinguishing
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C37/00—Control of fire-fighting equipment
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H01M10/635—Control systems based on ambient temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Automation & Control Theory (AREA)
  • Secondary Cells (AREA)

Abstract

The invention relates to an intelligent fire-fighting system for a battery replacement station, which comprises a fire-fighting disposal system in a battery pack group and a fire-fighting disposal system in the battery replacement station; the fire-fighting disposal system in the battery pack group comprises a temperature sensor, a BMS device, a high-pressure box, a water cooling device and an aerosol fire extinguisher; the internal fire fighting disposal system of the power conversion station comprises a fire fighting control system in the power conversion station, a thermal imaging temperature-sensitive detector, a spraying fire extinguishing system and a water pool. According to the intelligent fire-fighting system for the power swapping station, different disposal measures are adopted according to different fire risk levels; and overall structure is simple, and the fire control deals with the logic clearly, and realizes automated processing, has improved fire extinguishing efficiency, has avoided stretching of the intensity of a fire to reduce the loss that the conflagration probably leads to minimum.

Description

Intelligent fire-fighting system for power switching station
Technical Field
The invention relates to a fire fighting system applied to a power conversion station, and belongs to the technical field of new energy.
Background
Along with the popularization of electric new forms of energy vehicles and ships such as electronic (card) car, electric ship, in order to improve and use convenient degree, generally can be equipped with special power station that trades for carry out swift power of trading to electric vehicle ship to make its can be quick drop into service again, avoid long-time waiting of charging.
The power exchanging station can be provided with different forms according to specific situations, such as an electric truck side top-hung type power exchanging system with the Chinese patent publication number of CN216761523U, an intelligent and convenient power exchanging station with the Chinese patent publication number of CN214984933U, a truck power exchanging station with the Chinese patent publication number of CN214728296U, and the like; the battery replacement station is also provided with battery replacement mechanisms in different forms, but is also provided with a huge charging system for supplementing the replaced batteries.
For a family car, the capacity of a battery pack is generally within 100kw.h, and the charging power is controlled within 100 kw; with current battery technology, such charging processes are relatively safe; however, the capacity of a battery pack applied to the fields of electric trucks, electric ships and the like generally reaches more than 1000kw.h, and in order to complete charging as soon as possible, the charging power reaches more than 250kw, even more than 500kw, and under such a condition, risks such as battery bulge and spontaneous combustion are very likely to occur in the charging process.
Once the battery pack group is spontaneously combusted, a large amount of heat and toxic and harmful substances are generated, and need to be extinguished in time, otherwise, peripheral equipment is easily ignited, and the whole charging station is subjected to fire and damage, even the peripheral equipment is affected.
Therefore, when a power station is built, the method is particularly applied to a high-capacity battery pack group, and when a high-power charging unit is used, a complete fire-fighting system needs to be arranged, so that full treatment preparation is made for potential fire hazards.
Disclosure of Invention
The invention aims to provide an intelligent fire fighting system for a power conversion station, which is applied to the power conversion station and is used for providing fire alarm and intelligent fire extinguishing operation for the power conversion station, particularly a charging system.
In order to achieve the above object, a first aspect of the present invention provides an intelligent fire fighting system for a battery replacement station, including a fire fighting disposal system inside a battery pack group;
the fire-fighting disposal system in the battery pack group comprises a temperature sensor, a BMS device, a high-pressure box, a water cooling device and an electric control fire extinguisher;
the temperature sensor is arranged near each battery pack in the battery pack group or between every two adjacent battery packs;
the plurality of temperature sensors are simultaneously connected to the BMS device; the temperature sensor detects and feeds back the surface temperature of the current battery pack in real time;
the BMS device, the high-voltage box and the water cooling device are arranged in the battery pack group; the BMS device is connected with the high-pressure box, the water cooling device and the electric control fire extinguisher;
the BMS device can be communicated with a charging unit control system and a power station changing control system through a connector of a battery pack group;
the periphery of each battery pack is provided with a heat dissipation water pipe, and all the heat dissipation water pipes are connected to a water cooling device in a gathering manner;
an electric control fire extinguisher is arranged in the battery pack group.
As a further improvement of the invention, the fire risk grade inside the battery pack group is classified into 2 grades, which are respectively as follows:
fire risk level I, abnormal overheating of the battery pack temperature;
and (3) risk description: the temperature sensor feeds back the real-time temperature of the battery packs to the BMS device, and the BMS device judges that more than 1 battery pack is abnormally overheated;
alarm disposal: the BMS device controls the high-voltage box and the water cooling device to treat;
the system disconnects the connector of the battery pack group from the outside; the high-voltage box is disconnected with the battery packs;
the water cooling device enters a full-load working state, and the water circulation speed in the heat dissipation water pipe is increased;
the temperature sensor feeds back the temperature of the battery pack in real time until the temperature of the battery pack is reduced and recovered to be normal;
the BMS device feeds the fire handling situation back to the power conversion station control system;
fire risk class II, battery pack temperature overheating out of control;
and (3) risk description: on the basis of the alarm handling of the fire risk level I, the temperature of the battery pack is not lowered as expected and is still kept to be gradually raised until open fire combustion is generated;
alarm disposal: the BMS device starts the electric control fire extinguisher; the electric control fire extinguisher sprays out fire extinguishing medium to carry out fire extinguishing operation;
and the BMS device feeds the fire disaster handling condition back to the power station control system.
As a further improvement of the invention, the electric fire extinguisher is an aerosol fire extinguisher.
The invention also provides an intelligent fire-fighting system for the power changing station, which comprises an internal fire-fighting disposal system of the power changing station;
the internal fire fighting disposal system of the power exchanging station comprises a fire fighting control system in the power exchanging station, an alarm, a spraying fire extinguishing system and a water pool;
the alarm is arranged in the battery replacement station; the alarm is connected to an extinction control system in the battery replacement station;
the spraying fire-extinguishing system comprises a spraying water pump, a water pipe and a spraying head;
the spray water pump is arranged in the power exchanging station or outside the power exchanging station; the spray water pump is connected with a fire fighting control system in the power conversion station;
a plurality of spray heads are arranged in the battery replacement station; all spray headers are connected to the spray water pump through water pipes in a gathering manner;
a water pool is arranged in the battery replacement station; the water pool is positioned on the side of the charging area;
the depth of the water pool is greater than the height of the battery pack group; water or fire extinguishing agents are pre-injected into the pool;
a driving system of the power exchange station is arranged above the water pool in a spanning mode; the battery replacing robot can carry the battery pack to move above the water pool.
As a further improvement of the invention, the fire risk level inside the power conversion station is 2 levels, which are respectively:
fire risk grade I, and fire alarm condition occurs preliminarily;
and (3) risk description: triggering the alarm when a fire disaster occurs in the battery replacement station;
the alarm sends the alarm to a fire fighting control system in the battery replacement station;
and (4) alert handling: the fire control system in the power conversion station triggers an alarm and feeds back the alarm condition to the power conversion station control system;
the charging station control system cuts off the power supply of the charging unit;
starting a spray water pump by a fire control system in the power conversion station;
the spray header sprays out a fire extinguishing medium;
the fire control system in the power swapping station feeds the fire disposal condition back to the power swapping station control system;
fire risk grade II, the battery pack is on fire, and the fire is uncontrollable;
and (3) risk description: judging that a battery pack group is on fire and cannot be extinguished through a spraying fire extinguishing system;
and (4) alert handling: the battery replacement station control system starts the battery replacement robot, and the uncontrollable battery pack group is hoisted and transferred;
and putting the whole battery pack into a water pool for soaking and extinguishing fire.
As a further improvement of the invention, the alarm is a smoke alarm;
1 smoke detector alarm is arranged near each charging unit;
the smoke detector can be triggered by smoke dust generated by fire burning or hidden burning.
As a further improvement of the invention, the alarm is a thermal imaging temperature-sensing detector;
the thermal imaging temperature-sensing detector is arranged at the top in the battery replacement station;
the heat generated by fire burning is accumulated, so that the fire point and the ambient temperature are abnormally heated, and the abnormal temperature can be detected by the thermal imaging temperature-sensing detector.
As a further improvement of the invention, 1 spray header is arranged near each charging unit.
Furthermore, each spray header is connected with a water pipe through 1 independently controllable electromagnetic control valve;
the electromagnetic control valve is connected with a fire fighting control system in the battery replacing station.
The invention also provides an intelligent fire-fighting system for the battery replacement station, which comprises a fire-fighting disposal system in the battery pack group and a fire-fighting disposal system in the battery replacement station;
the fire-fighting disposal system in the battery pack group comprises a temperature sensor, a BMS device, a high-pressure box, a water cooling device and an aerosol fire extinguisher;
the temperature sensor is arranged near each battery pack in the battery pack group or between every two adjacent battery packs;
the plurality of temperature sensors are simultaneously connected to the BMS device; the temperature sensor detects and feeds back the surface temperature of the current battery pack in real time;
the BMS device, the high-voltage box and the water cooling device are arranged in the battery pack group; the BMS device is connected with the high-pressure box, the water cooling device and the aerosol fire extinguisher;
the BMS device can be communicated with a charging unit control system and a power station changing control system through a connector of a battery pack group;
the periphery of each battery pack is provided with a heat dissipation water pipe, and all the heat dissipation water pipes are connected to a water cooling device in a gathering manner;
more than 1 aerosol fire extinguishers are arranged in the battery pack group;
the fire-fighting disposal system in the power exchanging station comprises a fire-fighting control system in the power exchanging station, a thermal imaging temperature-sensitive detector, a spraying fire-extinguishing system and a water pool;
more than 1 thermal imaging temperature-sensing detector is arranged in the power station; the alarm is connected to a fire fighting control system in the battery replacement station;
the spraying fire-extinguishing system comprises a spraying water pump, a water pipe and a spraying head;
the spray water pump is arranged in the power exchanging station or outside the power exchanging station; the spray water pump is connected with a fire fighting control system in the power conversion station;
a plurality of spray heads are arranged in the battery replacement station; all the spray headers are connected to the spray water pump in a gathering way through water pipes;
a water pool is arranged in the battery replacement station; the water pool is positioned at the edge of the charging area;
the depth of the water pool is greater than the height of the battery pack group; water or fire extinguishing agents are pre-injected into the pool;
a traveling system of the battery replacement station is arranged above the water pool in a spanning mode; the battery replacing robot can carry the battery pack to move above the water pool.
As a further improvement of the intelligent fire-fighting system, the fire risk grade of the intelligent fire-fighting system for the power swapping station is divided into 4 grades, which are respectively as follows:
fire risk level I, abnormal overheating of the battery pack temperature in the battery pack group;
and (3) risk description: the temperature sensor feeds back the real-time temperature of the battery pack to the BMS device, and the BMS device judges that the temperature of the battery pack is abnormally overheated;
alarm disposal: the BMS device sends the alarm information to a power station control system through the charging unit;
the battery replacement station control system cuts off the power supply of the charging unit where the battery pack group is located, and stops charging the battery pack group;
the BMS device controls the high-voltage box and the water cooling device to carry out internal treatment on the battery pack;
the high-voltage box is disconnected with the battery packs;
the water cooling device enters a full-load working state, and the water circulation speed in the heat dissipation water pipe is increased;
the temperature sensor feeds back the temperature of the battery pack in real time until the temperature of the battery pack is reduced and recovered to be normal;
the BMS device feeds the fire handling condition back to the power station control system;
fire risk class II, battery pack temperature in the battery pack group is overheated and out of control;
and (3) risk description: on the basis of the alarm condition treatment of the fire risk level I, the temperature of the battery pack is not reduced as expected and is still kept to be gradually increased until open fire is generated for combustion;
and (4) alert handling: the BMS device starts the aerosol fire extinguisher; the aerosol fire extinguisher sprays out a fire extinguishing medium to carry out fire extinguishing operation;
the BMS device feeds the fire handling situation back to the power conversion station control system;
fire risk grade III, that other facility equipment in the battery replacement station initially generates fire alarm, or that the fire in the battery pack group is not extinguished;
and (3) risk description: triggering the thermal imaging temperature-sensing detector when a fire disaster occurs in the battery replacement station; the thermal imaging temperature-sensing detector sends the alarm condition to an internal fire control system of the power conversion station;
or on the basis of the alarm handling of the fire risk level II, the fire in the battery pack group is not extinguished, and the fire extends; the BMS device sends the warning to the power change station control system;
and (4) alert handling: the fire control system in the power conversion station triggers an alarm and feeds back the alarm condition to the power conversion station control system;
the charging station control system cuts off the power supply of the charging unit;
starting a spray water pump by a fire control system in the power conversion station;
the spray header sprays out a fire extinguishing medium;
the fire control system in the power change station feeds the fire handling condition back to the power change station control system;
fire risk level IV, the battery pack is in fire, and the fire is uncontrollable;
and (3) risk description: the battery pack is in fire, and cannot be extinguished through the spraying fire extinguishing system;
and (4) alert handling: the battery replacing station control system starts the battery replacing robot and hoists and transfers the uncontrollable battery pack group;
and putting the whole battery pack into a pool for soaking and extinguishing fire.
According to the intelligent fire fighting system for the battery changing station, disclosed by the invention, the fire fighting disposal system in the battery pack group and the fire fighting disposal system in the battery changing station are respectively arranged according to the characteristics of the battery pack group and the battery changing station; the fire-fighting disposal system in the battery pack group adopts accelerated water cooling or starts an aerosol fire extinguisher to extinguish fire in the battery pack group according to different fire risk grades; and the fire-fighting disposal system in the power exchanging station adopts spraying for fire extinguishing or starts the power exchanging robot to put the battery pack group which is on fire into the water pool for soaking and fire extinguishing according to different fire risk grades.
The intelligent fire-fighting system for the power station is simple in structure, clear in fire-fighting treatment logic, capable of achieving automatic treatment, improving fire-fighting efficiency and avoiding fire spread, and therefore loss possibly caused by fire is reduced to the minimum.
Drawings
Fig. 1 is a front view of an installation arrangement of an intelligent fire protection system for a power swapping station in the power swapping station;
fig. 2 is a top view of the arrangement of the intelligent fire protection system for the power swapping station in the power swapping station;
fig. 3 is a side view of the installation arrangement of the intelligent fire protection system for the power swapping station in the power swapping station;
fig. 4 is a schematic overall structure diagram of a battery pack group of the intelligent fire protection system for the power change station according to the present invention;
fig. 5 is an overall structural front view of a battery pack of the intelligent fire fighting system for a power changing station according to the invention;
fig. 6 is a schematic diagram of a working flow of the intelligent fire fighting system for a power swapping station of the present invention.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
The specific implementation mode of the intelligent fire fighting system for the battery replacement station is a battery replacement station for replacing batteries of an electric truck, as shown in fig. 1-3, the intelligent fire fighting system for the battery replacement station is a battery replacement station capable of being quickly moved and installed and is constructed by a plurality of container modules.
A traveling crane system is adopted in the battery replacing station as a machine tool for hoisting and replacing the battery pack group; a battery replacement channel 1 is arranged at one side of the battery replacement station and used for parking a vehicle to be replaced; the main body of the battery replacing station is arranged at the edge of the battery replacing channel 1, the upper part of the battery replacing channel is a travelling crane mechanism area 2, and a travelling crane system is arranged in the battery replacing channel and used for lifting a battery pack group 4; the lower part of the main body of the power station is a charging area 3, a plurality of charging units 31 are placed in the charging area, and a battery pack group 4 to be charged is placed on the charging area for power supplement.
The fire-fighting system installed at the power conversion station firstly comprises a spraying fire-extinguishing system.
The sprinkler system may include a smoke detector alarm 51; a plurality of smoke-sensitive alarms 51 are arranged in the power station; once combustion exists in the power station, smoke is generated, the smoke sensing alarm 51 is excited, and the smoke sensing alarm 51 gives a fire alarm to a fire control system. Since the smoke detector 51 is activated according to the concentration of smoke, preferably, 1 smoke detector 51 is disposed near or above each charging unit 31, so that the smoke generated by combustion can be detected in the first time and an alarm can be given in time.
The sprinkler system may also include a thermal imaging temperature detector 52; a plurality of thermal imaging temperature-sensing detectors 52 are arranged inside the battery replacement station; once heat is accumulated in the power exchanging station, even if open fire and smoke are not formed, the temperature of the surrounding environment can be changed, and when the open fire is generated, the temperature change is formed, and can be detected by the thermal imaging temperature-sensing detector 52; the thermal imaging temperature-sensitive detector 52 sends out a fire alarm to the fire control system, and meanwhile, the thermal imaging temperature-sensitive detector 52 can detect the position of the heat source, so as to send the position information to the fire control system. The thermal imaging temperature-sensing detector 52 works by sensing heat, and is preferably arranged at the top inside the power exchange station, so that the detection area is increased; meanwhile, the detection dead angle of the thermal imaging temperature-sensitive detector 52 needs to be calculated according to the arrangement condition of the charging area 3, so that the installation number of the thermal imaging temperature-sensitive detector 52 is properly increased, and all flammable areas can be detected.
The spraying fire-extinguishing system needs to be provided with a spraying system; a spray water pump 61 is arranged outside the power exchanging station, and the spray water pump 61 is connected into the power exchanging station through a water pipe 62; a plurality of spray heads 53 are arranged in the power exchanging station, and the spray heads 53 are connected with a water pipe 62; preferably, 1 spray header 53 is arranged near or above each charging unit 31; preferably, each showerhead 53 is connected to a water line 62 through an electromagnetic control valve. Therefore, when the fire control system receives the alarm sent by the smoke detector 51 or the thermal imaging temperature detector 52, the spray water pump 61 is started to pump fire water or fire extinguishing agent into the power station, and the electromagnetic control valve of the spray header 53 at the corresponding position is started at the same time, so that the fire water or the fire extinguishing agent is sprayed out at the corresponding spray header 53 through the water pipe 62 and the valve to perform fire extinguishing spray in the alarm area. Meanwhile, after receiving the alarm of the fire control system, the worker can check the fire in the field and further deal with the fire, if the local fire is uncontrollable, whether all the spray headers 53 are started to spray and cool other areas or not is avoided, and meanwhile, other measures are taken to put out the fire.
When the charging unit 31 or the device in the charging station catches fire, a fire alarm is triggered, the spray water pump 61 is started, and water mist fire extinguishing is carried out through the spray header 53. However, if the battery pack 4 being charged is burnt, the fire source is generally in the battery, and the battery pack is provided with a baffle outside for dust and rain prevention, so that the fire point is difficult to completely extinguish by spraying fire water or fire extinguishing chemicals outside the battery pack 4. Therefore, the intelligent fire-fighting system for the battery replacement station is also provided with a fire-fighting water pool area 7. As shown in fig. 1, 2; a fire-fighting water pool area 7 is arranged at one end of the internal area of the power station, and the fire-fighting water pool area 7 is arranged at the end of the charging area 3; the fire-fighting water pool area 7 is preferably dug downwards to form a water pool 71 in the ground where the power station is located, and the depth of the water pool 71 is greater than the height of the battery pack group 4; water or fire extinguishing agents are pre-injected into the water tank 71; the whole water tank 71 is lower than the power exchanging station, so that even if water stored in the water tank leaks, the power exchanging station cannot be soaked, and the normal operation of the power exchanging station cannot be influenced. Preferably, a sealed partition is provided between the fire-fighting water pool area 7 and the charging area 3 to prevent water or chemicals in the water pool 71 from splashing out, and particularly prevent water or chemicals from splashing into the charging unit 31 or other facilities and equipment to cause damage.
When the battery pack group 4 is confirmed to be out of control (judged manually or the system is judged by communicating with the charging unit 31), the battery replacing robot based on the driving system in the battery replacing station is started, the out-of-control battery pack group 4 is lifted from the corresponding charging unit 31 and then moved to the fire-fighting water battery area 7, the whole battery pack group 4 is sunk into the water pool 71 to carry out immersion type fire extinguishing, and the fire of the battery pack group 4 is prevented from being expanded to influence the safety of other battery pack groups 4 and the whole battery replacing station.
The intelligent fire fighting system for the power conversion station is characterized in that a fire fighting system is arranged in the power conversion station, and a battery pack group 4 is structurally improved, as shown in fig. 4 and 5. The battery pack group 4 comprises an outer frame 41, a plurality of independent battery packs 42 are arranged in the outer frame, the plurality of battery packs 42 are connected in series and in parallel, and finally connected into a high-voltage box 44 and connected with the outside through a connector 48. The battery pack group 4 is internally provided with a BMS device 43, an abbreviation of BMS and a Battery Management System, commonly called a battery caregiver or a battery manager, and is used for intelligently managing and maintaining each battery unit, preventing the battery from being overcharged and overdischarged, prolonging the service life of the battery and monitoring the state of the battery; the BMS device 43 monitors the state of each battery pack 42. In order to improve the fire safety level of the battery pack group 4, heat dissipation water pipes 46 are arranged around the battery pack 42, and all the heat dissipation water pipes 46 are collectively connected to the water cooling device 45. During ordinary charging, the water cooling device 45 also keeps working, heat around the battery pack 42 is taken away through the cooling water pipe 46, water circulation is carried out through the water cooling device 45, and heated water is timely conveyed into the water cooling device 45 to be cooled. When the temperature of one of the battery packs 42 is out of control in the process, the temperature of the battery pack rises, and the BMS device 43 detects the abnormal information and sends out an alarm signal; the alarm information is sent to a control system of the battery replacement station through the charging unit 31, the power supply of the charging unit 31 is cut off, and the battery pack group 4 is stopped to be charged; and the high voltage box 44 disconnects the battery pack 42; meanwhile, the water cooling device 45 starts the full load operation, so that the water circulation speed is increased, and the temperature of the battery pack 42 is reduced more efficiently until the temperature of the battery pack 42 is reduced to a safety range; the battery pack group 4 remains on the charging unit 31, waiting for manual handling.
Further, a plurality of aerosol fire extinguishers 47 are arranged in the battery pack group 4, and the aerosol fire extinguishers 47 are located in the outer frame 41; the electrically controlled starting device of the aerosol fire extinguisher 47 is connected to the BMS device 43. When the above steps, namely the water cooling device 45 is fully operated and the temperature of the battery pack 42 is still uncontrollable, the battery pack 42 is very easy to form open fire, so the BMS device 43 triggers the aerosol fire extinguisher 47 to extinguish the aerosol; meanwhile, the BMS device 43 feeds fire information of the battery pack 42 back to a control system of the battery replacing station through the charging unit 31, the battery replacing station control system starts a fire alarm program, pre-starts the spray water pump 61, and then monitors the area of the battery pack group 4 by the thermal imaging temperature-sensing detector 52; if the thermal imaging temperature-sensing detector 52 monitors that the temperature drops, no fire extension is formed, and the fire in the battery pack 42 is extinguished by the aerosol fire extinguisher 47, the spray header 53 is not started, and the battery pack group 4 is left on the charging unit 31 to wait for manual disposal. If the thermal imaging temperature-sensitive detector 52 monitors that the temperature rises, that is, the fire becomes large, and there is an extended risk that the fire in the battery pack 42 cannot be extinguished by the aerosol fire extinguisher 47, the spray header 53 is started to perform spraying fire extinguishment.
The working flow of the intelligent fire fighting system for the power swapping station is shown in fig. 6; a special fire-fighting system is arranged mainly aiming at the potential safety hazard of the battery pack group 4 in the charging process, particularly the battery pack 42 is easy to overheat and burn in the charging process; the fire-fighting system is divided into a battery pack internal system and a battery replacement station internal system.
In the using process of the power station, the following 4 levels of fire risks are faced, the intelligent fire-fighting system for the power station carries out classified disposal according to the severity of fire, and the disposal process is controlled by the automatic system, so that the fire is eliminated quickly and efficiently, and the fire alarm condition can be effectively prevented from being enlarged.
Fire risk class IThe battery pack is abnormally overheated and is handled by an internal system of the battery pack group; a temperature sensor is arranged at each battery pack 42, the real-time temperature of the battery pack 42 is fed back to the BMS device 43, and once an abnormal event of overheating of the battery pack 42 occurs, the abnormal event is immediately dealt with by powering off the water cooling device 45 and the high voltage box 44 until the temperature of the battery pack 42 is reduced and recovered to normal.
Fire risk class IIThe battery pack is subjected to temperature overheating out of control and is handled by an internal system of the battery pack group; when the temperature of the battery pack 42 is abnormally overheated and uncontrollable and open fire is about to occur or has occurred, the BMS device 43 activates the aerosol fire extinguisher 47 to perform an aerosol fire extinguishing operation.
Fire risk class IIIIf the battery pack group is on fire and the fire has an extension risk, or if other facilities and equipment in the power exchanging station generate fire, the fire is handled by an internal system of the power exchanging station; when the internal system of battery pack deals with not the result, BMS device 43 feeds back the alert situation to trading power station control system, and fire control system carries out initiative monitoring through smoke detector 51, thermal imaging temperature-sensing detector 52 simultaneously, in time starts spray pump 61 and shower head 53, sprays to put out a fire.
Fire risk class IVWhen the battery pack is on fire and the spraying fire extinguishing is not controllable, the battery pack is replacedThe power station internal system continues to process; the fire control system feeds back the alarm condition to the battery replacement station control system, the battery replacement robot is started by the battery replacement station control system, the uncontrollable battery pack group 4 which is on fire is hoisted and transferred, and the uncontrollable battery pack group is thrown into the water pool 71 for soaking and fire extinguishing.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the embodiments disclosed, but is capable of various modifications and substitutions without departing from the spirit of the invention.

Claims (11)

1. The intelligent fire-fighting system for the battery replacement station is characterized by comprising a fire-fighting disposal system in a battery pack group;
the fire-fighting disposal system in the battery pack group comprises a temperature sensor, a BMS device, a high-pressure box, a water cooling device and an electric control fire extinguisher;
the temperature sensor is arranged near each battery pack in the battery pack group or between every two adjacent battery packs;
a plurality of temperature sensors are simultaneously connected into the BMS device; the temperature sensor detects and feeds back the surface temperature of the current battery pack in real time;
the BMS device, the high-voltage box and the water cooling device are arranged in the battery pack group; the BMS device is connected with the high-pressure box, the water cooling device and the electric control fire extinguisher;
the BMS device can be communicated with a charging unit control system and a power station changing control system through a connector of a battery pack group;
the periphery of each battery pack is provided with a heat dissipation water pipe, and all the heat dissipation water pipes are connected to a water cooling device in a gathering manner;
an electric control fire extinguisher is arranged in the battery pack group.
2. The intelligent fire-fighting system for the battery replacement station as recited in claim 1, wherein the fire risk level inside the battery pack group is classified into 2 levels, which are:
fire risk level I, abnormal overheating of the battery pack temperature;
and (3) risk description: the temperature sensor feeds back the real-time temperature of the battery packs to the BMS device, and the BMS device judges that more than 1 battery pack is abnormally overheated;
and (4) alert handling: the BMS device controls the high-voltage box and the water cooling device to treat;
the system disconnects the joint of the battery pack group from the outside; the high-voltage box is disconnected with the battery packs;
the water cooling device enters a full-load working state, and the water circulation speed in the heat dissipation water pipe is increased;
the temperature sensor feeds back the temperature of the battery pack in real time until the temperature of the battery pack is reduced and recovered to be normal;
the BMS device feeds the fire handling condition back to the power station control system;
fire risk class II, battery pack temperature overheating out of control;
and (3) risk description: on the basis of the alarm handling of the fire risk level I, the temperature of the battery pack is not lowered as expected and is still kept to be gradually raised until open fire combustion is generated;
and (4) alert handling: the BMS device starts the electric control fire extinguisher; the electric control fire extinguisher sprays out fire extinguishing medium to carry out fire extinguishing operation;
and the BMS device feeds the fire handling condition back to the power conversion station control system.
3. The intelligent fire fighting system for the power changing station as recited in claim 1 or 2, wherein the electrically controlled fire extinguisher is an aerosol fire extinguisher.
4. The intelligent fire fighting system for the power change station is characterized by comprising a fire fighting disposal system inside the power change station;
the internal fire fighting disposal system of the power exchanging station comprises a fire fighting control system in the power exchanging station, an alarm, a spraying fire extinguishing system and a water pool;
the alarm is arranged in the battery replacement station; the alarm is connected to an extinction control system in the battery replacement station;
the spraying fire-extinguishing system comprises a spraying water pump, a water pipe and a spraying head;
the spray water pump is arranged in the power exchanging station or outside the power exchanging station; the spray water pump is connected with a fire fighting control system in the power conversion station;
a plurality of spray heads are arranged in the battery replacement station; all spray headers are connected to the spray water pump through water pipes in a gathering manner;
a water pool is arranged in the battery replacement station; the water pool is positioned on the side of the charging area;
the depth of the water pool is greater than the height of the battery pack group; water or fire extinguishing agents are pre-injected into the pool;
a driving system of the power exchange station is arranged above the water pool in a spanning mode; the battery replacing robot can carry the battery pack group to move above the water pool.
5. The intelligent fire fighting system for the power swapping station as claimed in claim 4, wherein the fire risk level inside the power swapping station is classified into 2 levels, which are:
fire risk grade I, and fire alarm condition is generated preliminarily;
and (3) risk description: triggering the alarm when a fire disaster occurs in the battery replacement station;
the alarm sends the alarm to a fire fighting control system in the power conversion station;
and (4) alert handling: the fire fighting control system in the power conversion station triggers an alarm and feeds the alarm back to the power conversion station control system;
the power supply of the charging unit is cut off by the power exchange station control system;
starting a spray water pump by a fire control system in the power conversion station;
the spray header sprays out a fire extinguishing medium;
the fire control system in the power change station feeds the fire handling condition back to the power change station control system;
fire risk grade II, the battery pack is on fire, and the fire is uncontrollable;
and (3) risk description: judging that a battery pack group is on fire and cannot be extinguished through a spraying fire extinguishing system;
and (4) alert handling: the battery replacing station control system starts the battery replacing robot and hoists and transfers the uncontrollable battery pack group;
and putting the whole battery pack into a pool for soaking and extinguishing fire.
6. The intelligent fire fighting system for the power swapping station as claimed in claim 4 or 5, wherein the alarm is a smoke alarm;
1 smoke detector alarm is arranged near each charging unit;
the smoke detector can be triggered by smoke dust generated by fire burning or hidden burning.
7. The intelligent fire fighting system for the power swapping station as claimed in claim 4 or 5, wherein the alarm is a thermal imaging temperature-sensitive detector;
the thermal imaging temperature-sensing detector is arranged at the top in the power exchanging station;
the heat generated by fire burning is accumulated to cause abnormal temperature rise of fire points and the ambient temperature, and the abnormal temperature rise can be detected by the thermal imaging temperature-sensing detector.
8. The intelligent fire protection system for the power swapping station as in claim 4 or 5, wherein 1 all the spray heads are provided near each charging set.
9. The intelligent fire fighting system for the power swapping station as recited in claim 8 wherein each shower head is connected to the water pipe by 1 independently controllable electromagnetic control valve;
the electromagnetic control valve is connected with a fire fighting control system in the battery replacing station.
10. The intelligent fire-fighting system for the battery replacement station is characterized by comprising a fire-fighting disposal system in a battery pack group and a fire-fighting disposal system in the battery replacement station;
the fire-fighting disposal system in the battery pack group comprises a temperature sensor, a BMS device, a high-pressure box, a water cooling device and an aerosol fire extinguisher;
the temperature sensor is arranged near each battery pack in the battery pack group or between every two adjacent battery packs;
a plurality of temperature sensors are simultaneously connected into the BMS device; the temperature sensor detects and feeds back the surface temperature of the current battery pack in real time;
the BMS device, the high-voltage box and the water cooling device are arranged in the battery pack group; the BMS device is connected with the high-pressure box, the water cooling device and the aerosol fire extinguisher;
the BMS device can be communicated with a charging unit control system and a battery replacement station control system through a joint of a battery pack group;
the periphery of each battery pack is provided with a heat dissipation water pipe, and all the heat dissipation water pipes are connected to a water cooling device in a gathering manner;
more than 1 aerosol fire extinguishers are arranged in the battery pack group;
the fire-fighting disposal system in the power exchanging station comprises a fire-fighting control system in the power exchanging station, a thermal imaging temperature-sensitive detector, a spraying fire-extinguishing system and a water pool;
more than 1 thermal imaging temperature-sensing detectors are arranged in the power conversion station; the alarm is connected to an extinction control system in the battery replacement station;
the spraying fire-extinguishing system comprises a spraying water pump, a water pipe and a spraying head;
the spray water pump is arranged in the power exchanging station or outside the power exchanging station; the spray water pump is connected with a fire fighting control system in the power conversion station;
a plurality of spray heads are arranged in the battery replacement station; all spray headers are connected to the spray water pump through water pipes in a gathering manner;
a water pool is arranged in the battery replacement station; the water pool is positioned on the side of the charging area;
the depth of the water pool is greater than the height of the battery pack group; water or fire extinguishing agents are pre-injected into the pool;
a driving system of the power exchange station is arranged above the water pool in a spanning mode; the battery replacing robot can carry the battery pack to move above the water pool.
11. The intelligent fire fighting system for the power swapping station as claimed in claim 10, wherein the fire risk level of the intelligent fire fighting system for the power swapping station is classified into 4 levels, which are:
fire risk level I, abnormal overheating of the battery pack temperature in the battery pack group;
and (3) risk description: the temperature sensor feeds back the real-time temperature of the battery pack to the BMS device, and the BMS device judges that the temperature of the battery pack is abnormally overheated;
and (4) alert handling: the BMS device sends the alarm information to a power conversion station control system through a charging unit;
the battery replacement station control system cuts off the power supply of the charging unit where the battery pack group is located, and stops charging the battery pack group;
the BMS device controls the high-voltage box and the water cooling device to perform internal treatment on the battery pack;
the high-voltage box is disconnected with the battery packs;
the water cooling device enters a full-load working state, and the water circulation speed in the heat dissipation water pipe is increased;
the temperature sensor feeds back the temperature of the battery pack in real time until the temperature of the battery pack is reduced and recovered to be normal;
the BMS device feeds the fire handling condition back to the power station control system;
fire risk class II, battery pack temperature in the battery pack group is out of control due to overheating;
and (3) risk description: on the basis of the alarm handling of the fire risk level I, the temperature of the battery pack is not lowered as expected and is still kept to be gradually raised until open fire combustion is generated;
and (4) alert handling: the BMS device starts the aerosol fire extinguisher; the aerosol fire extinguisher sprays out fire extinguishing medium to carry out fire extinguishing operation;
the BMS device feeds the fire handling condition back to the power station control system;
fire risk level III, namely that other facility equipment in the battery replacement station initially generates fire alarm conditions or fire in the battery pack group is not extinguished;
and (3) risk description: triggering the thermal imaging temperature-sensing detector when a fire disaster occurs in the battery replacement station; the thermal imaging temperature-sensing detector sends the alarm condition to a fire fighting control system in the battery replacement station;
or on the basis of the alarm handling of the fire risk level II, the fire in the battery pack group is not extinguished, and the fire extends; the BMS device sends the warning to the power change station control system;
alarm disposal: the fire fighting control system in the power conversion station triggers an alarm and feeds the alarm back to the power conversion station control system;
the power supply of the charging unit is cut off by the power exchange station control system;
starting a spray water pump by a fire control system in the power conversion station;
the spray header sprays out a fire extinguishing medium;
the fire control system in the power change station feeds the fire handling condition back to the power change station control system;
the fire risk grade IV is that the battery pack is on fire and the fire is uncontrollable;
and (3) risk description: the battery pack is in fire, and cannot be extinguished through the spraying fire extinguishing system;
and (4) alert handling: the battery replacement station control system starts the battery replacement robot, and the uncontrollable battery pack group is hoisted and transferred;
and putting the whole battery pack into a water pool for soaking and extinguishing fire.
CN202211287309.4A 2022-10-20 2022-10-20 Intelligent fire-fighting system for power conversion station Pending CN115581873A (en)

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