CN210521585U - Fire-fighting system for charging and replacing power station and charging and replacing power station comprising same - Google Patents
Fire-fighting system for charging and replacing power station and charging and replacing power station comprising same Download PDFInfo
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- CN210521585U CN210521585U CN201920699871.5U CN201920699871U CN210521585U CN 210521585 U CN210521585 U CN 210521585U CN 201920699871 U CN201920699871 U CN 201920699871U CN 210521585 U CN210521585 U CN 210521585U
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Abstract
The utility model relates to a fill and trade electric technical field, concretely relates to a fill and trade power station for filling fire extinguishing system who trades power station and including filling of this system. The utility model discloses the economic nature poor problem of putting out a fire that aims at solving current battery fire extinguishing systems existence. For this purpose, the utility model discloses a fire control system includes battery monitoring subsystem and battery transfer subsystem, and the battery monitoring subsystem sets up to can acquire power battery's state information, judge whether power battery has the thermal runaway risk or is in the thermal runaway state based on state information, and send alarm information when power battery has the thermal runaway risk or is in the thermal runaway state; the battery transfer subsystem is arranged to be able to transfer the power battery at risk of thermal runaway or in a thermal runaway state from the battery rack to the parking platform for disposal of the power battery. The utility model discloses a fire extinguishing system can compromise to fill the fire control safety and the fire control economic nature that trade the station, reduces the fire control construction cost and the fire control loss of firm.
Description
Technical Field
The utility model relates to a fill and trade electric technical field, concretely relates to a fill and trade power station for filling fire extinguishing system who trades power station and including filling of this system.
Background
With the continuous popularization of new energy automobiles, more and more people begin to accept and approve the new energy automobiles. Taking an electric vehicle as an example, the performance of the current lithium ion battery is limited, and the endurance mileage of the electric vehicle is generally relatively short, so how to supply electric quantity to the electric vehicle in a short time becomes a problem of important concern to users and various manufacturers. Among many power-up modes, the power conversion scheme is accepted by the market due to the advantages of small damage to the battery pack, capability of providing convenient and fast power-up experience for the vehicle owner and the like. The battery replacement scheme is generally completed in a battery charging and replacing station, a battery rack and a parking platform are arranged in the battery charging and replacing station, and a battery replacement robot is arranged between the battery rack and the parking platform, and the battery replacement robot completes the action of replacing a power battery for an electric automobile parked on the parking platform in a reciprocating mode between the battery rack and the parking platform.
In order to improve the operation efficiency and reduce the operation cost, a plurality of power batteries are usually stored in the charging and replacing power station. At present, most power batteries of electric automobiles adopt lithium ion batteries, and when the lithium ion batteries are overcharged/overdischarged or other problems occur inside a battery core, the battery is out of control due to overheating inside the battery, and even burning or explosion can be generated. When the battery is out of control due to heat, how to quickly isolate the battery and extinguish the abnormal battery by open fire is the key for fire fighting of the battery.
In the prior art, a battery fire-fighting system generally directly uses a water source to spray and extinguish a fire for a battery frame after the battery is out of control due to heat. Although the fire extinguishing mode is quick and effective, the economy of the fire extinguishing mode is not fully considered, and once a fire occurs, all batteries of the charging and replacing power station are damaged by water inflow, so that the loss caused by the damage is immeasurable.
Accordingly, there is a need in the art for a new fire protection system for a charging and replacement station that addresses the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problem in the prior art, namely solve the problem that the economic nature of putting out a fire that current battery fire extinguishing system exists is poor for solving, the utility model provides a fire extinguishing system for charging and replacing power station, charge and replace power station includes the shell and set up battery rack and parking platform in the shell, deposit polylith power battery on the battery rack, fire extinguishing system includes battery monitoring subsystem and battery transfer subsystem, battery monitoring subsystem sets up to can obtain the status information of power battery, judge whether power battery has the thermal runaway risk or is in the thermal runaway state based on the status information, and send alarm information when power battery has the thermal runaway risk or is in the thermal runaway state; the battery transfer subsystem is configured to transfer a power battery at risk of thermal runaway or in a thermal runaway condition from the battery rack to the parking platform for disposal of the power battery.
In the above preferred technical solution of the fire fighting system with a charging and replacing station, the battery transfer subsystem includes a battery taking and placing device and a battery transporting device that can be docked with each other, the battery taking and placing device is configured to be able to take the power battery off the battery rack, and the battery transporting device is configured to be able to transport the power battery to the parking platform.
In the preferred technical scheme of the fire fighting system using the charging and replacing station, the battery taking and placing device is a battery transfer mechanism on the battery rack; and/or the battery transportation device is a battery replacing robot in the battery charging and replacing station.
In the above preferred technical scheme of the fire fighting system using and charging and replacing power station, the housing is further provided with a front vent door and a rear vent door, and the front vent door and the rear vent door are arranged on two opposite side plates of the housing along the length direction of the parking platform.
In the above preferred technical solution of the fire fighting system using and charging and replacing power station, the front ventilation door and the rear ventilation door are automatic roller doors.
In the above preferred technical scheme of the fire fighting system for the charging and replacing station, a fireproof door is further arranged in the housing, and the fireproof door is arranged between the battery rack and the parking platform.
In the preferable technical scheme of the fire fighting system using the charging and replacing station, the fireproof door is an automatic rolling door.
In the above preferred technical scheme of the fire fighting system using and charging and replacing power station, the fire fighting system further comprises an exhaust subsystem, the exhaust subsystem comprises a fan, and the fan is arranged at the position of the shell corresponding to the parking platform.
In the above preferred technical solution of the fire fighting system for a charging and replacing station, the battery monitoring subsystem includes a battery data monitoring unit and a monitoring alarm unit connected to each other, and the battery data monitoring unit is configured to be able to acquire internal state information of the power battery, determine whether the power battery is in a normal state based on the internal state information, and send the internal state information when the power battery is in an abnormal state; the monitoring alarm unit is set to acquire the internal state information, judges whether the power battery has a thermal runaway risk or not based on the internal state information, and sends the alarm information when the power battery has the thermal runaway risk.
In the above preferred technical solution of the fire fighting system using and charging and replacing power station, the internal state information includes one or more of a remaining electric quantity value, a cell voltage, a cell temperature, a temperature rise rate, a cell pressure difference, and alarm information.
In the above preferred technical solution of the fire fighting system for a charging and replacing station, the battery monitoring subsystem further includes a battery smoke monitoring unit connected to the monitoring alarm unit, and the battery smoke monitoring unit is configured to collect external state information of the power battery, determine whether the power battery is in a thermal runaway state based on the external state information, and send a thermal runaway signal to the monitoring alarm unit when the power battery is in the thermal runaway state; the monitoring alarm unit is further configured to acquire the thermal runaway signal and send the alarm information based on the thermal runaway signal.
In the above preferred technical scheme of the fire fighting system using and charging and replacing power station, the external state information includes smoke concentration, the battery smoke monitoring unit includes a smoke detector capable of detecting the smoke concentration, each power battery is correspondingly provided with one smoke detector, and the smoke detectors are arranged on the battery rack near the pressure release valves of the power batteries.
In the above preferred technical solution of the fire fighting system for the charging and replacing station, the fire fighting system further includes a control subsystem, the control subsystem is respectively connected to the battery monitoring subsystem and the battery transfer subsystem, and the control subsystem is configured to acquire the alarm information and send a transfer instruction to the battery transfer subsystem based on the alarm information, so that the battery transfer subsystem transfers the power battery having a thermal runaway risk or in a thermal runaway state to the parking platform based on the transfer instruction.
In the above preferred technical solution of the fire protection system for the charging and replacing station, the fire protection system further includes an open fire monitoring subsystem and a fire extinguishing subsystem, the control subsystem is respectively connected with the open fire monitoring subsystem and the fire extinguishing subsystem, the open fire monitoring subsystem is configured to be capable of acquiring an image of a power battery at the parking platform, determining whether the power battery is in a fire state based on the image, and sending a fire extinguishing signal when the power battery is in the fire state; the control subsystem is arranged to acquire the fire extinguishing signal and send a fire extinguishing instruction to the fire extinguishing subsystem based on the fire extinguishing signal; the fire extinguishing subsystem is arranged to extinguish the fire of the power battery based on the fire extinguishing instruction.
In the above preferred technical solution of the fire fighting system using and charging and replacing power station, the open fire monitoring subsystem is further configured to determine a fire area on the surface of the power battery when the power battery is in a fire state, and send out a fire extinguishing signal containing information of the fire area; the control subsystem is further configured to send a fire suppression instruction to extinguish a fire to the fire area based on the fire suppression signal.
In the above preferred technical scheme of the fire fighting system using and charging and replacing power station, the open fire monitoring subsystem includes a visual sensor, and the visual sensor is disposed near the parking platform.
In the above preferred technical scheme of the fire fighting system with the charging and replacing station, the fire extinguishing subsystem includes a positioning injection device, the positioning injection device is arranged near the parking platform, the control subsystem is connected with the positioning injection device, and the positioning injection device is arranged to be capable of injecting a fire extinguishing agent to a target area on the power battery based on the fire extinguishing instruction.
In the above-mentioned with fill and trade preferred technical scheme of fire extinguishing systems of power station, the fire extinguishing subsystem still includes the cooling unit that sprays, the cooling sprays the unit and includes main line and the spray line that connects each other, the spray line set up in parking platform's top just be provided with the watering shower nozzle on the spray line, be provided with the automatically controlled valve on the main line, the automatically controlled valve with control subsystem connects, the automatically controlled valve sets to can be based on the instruction of putting out a fire is opened.
The utility model also provides a fill and trade the power station, fill and trade the power station and include as above-mentioned priority technical scheme in arbitrary one the fire extinguishing system.
The technical solution of the present invention is that, in the preferred technical solution of the present invention, the charging and replacing station includes a housing, a battery rack and a parking platform, a plurality of power batteries are stored on the battery rack, the fire fighting system includes a battery monitoring subsystem and a battery transfer subsystem, the battery monitoring subsystem is configured to acquire state information of the power batteries, determine whether the power batteries have a thermal runaway risk or are in a thermal runaway state based on the state information, and send alarm information when the power batteries have a thermal runaway risk or are in a thermal runaway state; the battery transfer subsystem is arranged to be able to transfer the power battery at risk of thermal runaway or in a thermal runaway state from the battery rack to the parking platform for disposal of the power battery.
Through the setting mode, the utility model discloses a fire extinguishing system can compromise to fill the fire control safety and the fire control economy nature that trade the power station, reduces firm's fire control construction cost and fire control loss. Specifically, the battery monitoring subsystem acquires the state information of the power battery, and can effectively judge whether the power battery has a thermal runaway risk or is in a thermal runaway state. When power battery has the thermal runaway risk or the thermal runaway appears, timely send alarm information, then the battery shifts the power battery that the subsystem will have the thermal runaway risk or be in the thermal runaway and shifts to parking platform from the battery frame and handle, can effectively keep apart this power battery and all the other batteries, avoids all the other power batteries impaired, improves fire control security and economic nature. When the power battery is sprayed to extinguish fire, the water resources can be concentrated to extinguish the fire of a single battery, so that the fire extinguishing effect is improved.
Furthermore, the power battery is transferred by using the battery transfer mechanism arranged on the battery rack and the battery replacing robot in the battery charging and replacing station, so that the mobility and flexibility of the existing equipment in the battery charging and replacing station, particularly the battery replacing robot, can be fully utilized, and the development cost of the fire fighting system is effectively reduced.
Further, through the internal state information who adopts battery data monitoring unit control power battery, can appear the very first time of thermal runaway risk at power battery and know, promoted fire extinguishing system's fire control efficiency. The battery smoke monitoring unit monitors the external state information of the power battery, and can immediately send a thermal runaway signal when the power battery generates smoke, so that the power battery can be conveniently moved by the battery transfer subsystem in time.
Further, through setting up control subsystem for the fire extinguishing system of this application can realize automatic alarm and power battery's transfer when power battery has the thermal runaway risk or is in the thermal runaway state, has improved the degree of automation and the fire control response speed of filling and trading the power station.
Further, through setting up naked light control subsystem and fire extinguishing subsystem for the power battery who is shifted to on the parking platform can obtain effectual control, can in time implement when the condition of a fire and put out a fire.
Further, adopt vision sensor through naked light control subsystem to and the subsystem of putting out a fire adopts location injection apparatus, makes when power battery is on fire, can go out power battery's the regional area of firing through the accurate analysis of the image that vision sensor gathered, thereby control location injection apparatus sprays this region, furthest practices thrift the fire control water, improves the utilization ratio of water resource, improves the effect of putting out a fire of naked light.
Further, through setting up the cooling and spraying unit, can be to air rapid cooling, subside the processing rapidly to the combustible smoke and dust in the air simultaneously, prevent secondary disaster's emergence.
Further, through set up preceding air door and back air door on the shell, can play the effect of in time airing exhaust when power battery is on fire, also make things convenient for the quick intervention of fire fighter and fire control facility simultaneously, effectively prevent that the circumstances such as explosion that combustible smoke gathering leads to under the airtight environment from taking place.
Further, through set up fire door between parking platform and battery frame, can in time keep apart it and battery frame after power battery is transferred parking platform, effectively protect the battery and the equipment of battery frame one side not damaged.
the battery monitoring subsystem is set to be capable of acquiring state information of the power battery, judging whether the power battery has a thermal runaway risk or is in a thermal runaway state or not based on the state information, and sending alarm information when the power battery has the thermal runaway risk or is in the thermal runaway state;
the battery transfer subsystem is configured to transfer a power battery at risk of thermal runaway or in a thermal runaway condition from the battery rack to the parking platform for disposal of the power battery.
The battery transportation device is a battery replacing robot in the battery charging and replacing station.
Scheme 5, according to scheme 4 be used for filling fire control system who trades power station, its characterized in that, preceding air door with back air door is automatic rolling slats door.
Scheme 6, according to scheme 1 a fire extinguishing systems for filling trade power station, its characterized in that still be provided with fire door in the shell, fire door set up in the battery rack with between the parking platform.
Scheme 8, according to scheme 1 a fire extinguishing systems for filling trade power station, characterized in that, the fire extinguishing systems still includes the subsystem of airing exhaust, the subsystem of airing exhaust includes the fan, the fan set up in the shell corresponds parking platform department.
Scheme 9, the fire protection system for a charging and replacing station according to scheme 1, wherein the battery monitoring subsystem comprises a battery data monitoring unit and a monitoring alarm unit connected with each other,
the battery data monitoring unit is set to be capable of acquiring internal state information of the power battery, judging whether the power battery is in a normal state or not based on the internal state information, and sending the internal state information when the power battery is in an abnormal state;
the monitoring alarm unit is set to acquire the internal state information, judges whether the power battery has a thermal runaway risk or not based on the internal state information, and sends the alarm information when the power battery has the thermal runaway risk.
Scheme 10, the fire protection system for a charging and replacing station according to scheme 9, wherein the internal state information includes one or more of a remaining electric quantity value, a cell voltage, a cell temperature, a temperature rise rate, a cell pressure difference, and alarm information.
the monitoring alarm unit is further configured to acquire the thermal runaway signal and send the alarm information based on the thermal runaway signal.
the control subsystem is set to be capable of obtaining the alarm information and sending a transfer instruction to the battery transfer subsystem based on the alarm information, so that the battery transfer subsystem transfers the power battery with the thermal runaway risk or in the thermal runaway state to the parking platform based on the transfer instruction.
the open fire monitoring subsystem is arranged to be capable of acquiring images of a power battery at the parking platform, determining whether the power battery is in a fire state based on the images, and sending a fire extinguishing signal when the power battery is in the fire state;
the control subsystem is arranged to acquire the fire extinguishing signal and send a fire extinguishing instruction to the fire extinguishing subsystem based on the fire extinguishing signal;
the fire extinguishing subsystem is arranged to extinguish the fire of the power battery based on the fire extinguishing instruction.
Scheme 15, the fire fighting system for the charging and replacing station according to scheme 14, wherein the open fire monitoring subsystem is further configured to determine a fire area on the surface of the power battery when the power battery is in a fire state, and to issue a fire extinguishing signal containing information of the fire area;
the control subsystem is further configured to send a fire suppression instruction to extinguish a fire to the fire area based on the fire suppression signal.
Scheme 16 and the fire fighting system for the charging and replacing station according to scheme 15 are characterized in that the open fire monitoring subsystem comprises a visual sensor, and the visual sensor is arranged near the parking platform.
Scheme 17, according to claim 14, the fire extinguishing subsystem includes location injection apparatus, location injection apparatus locates near parking platform, the control subsystem with location injection apparatus is connected, location injection apparatus sets up to be able to be based on the instruction of putting out a fire sprays extinguishing agent to the target area on the power battery.
Scheme 18, according to scheme 14 a fire extinguishing systems for filling trade power station, characterized in that, the subsystem of putting out a fire still includes cooling spray unit, cooling spray unit is including the main line and the spray line of connecting each other, spray the pipeline set up in parking platform's top just be provided with the watering shower nozzle on the spray line, be provided with the electric control valve on the main line, the electric control valve with control subsystem connects, the electric control valve sets up to open based on the instruction of putting out a fire.
Scheme 19, a charging and replacing power station, characterized in that, the charging and replacing power station includes the fire extinguishing system of any one of schemes 1-18.
Drawings
The utility model discloses a fill and trade fire extinguishing system who trades power station and including the power station that trades that fills who trades that is used for filling trade the power station is described below with reference to the figure and combining container formula to fill and trade the power station. In the drawings:
fig. 1 is a configuration diagram of a fire fighting system for a charging and replacing power station of the present invention;
fig. 2 is an appearance schematic diagram of the container type charging and replacing station of the present invention;
fig. 3 is a schematic view of the internal structure of the container type charging and replacing station of the present invention;
fig. 4 is a schematic structural view of a parking platform side of the container type charging and replacing station of the present invention;
FIG. 5 is a view of FIG. 4 taken along direction A;
FIG. 6 is a view of FIG. 4 taken along direction B;
fig. 7 is a schematic diagram of the area division of the power battery according to the present invention.
List of reference numerals
1. A battery charging and replacing station; 11. a housing; 12. a battery holder; 121. a battery transfer mechanism; 13. a parking platform; 14. a battery replacement robot; 2. a power battery; 3. a vision sensor; 4. positioning the injection device; 51. a main pipeline; 52. a spray pipeline; 53. a sprinkler head; 61. a front vent door; 62. a rear vent door; 7. a fire door.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the present invention is described with reference to a container type charging and replacing station, this application scenario is not limiting, and those skilled in the art can adjust the charging and replacing station as needed as long as the charging and replacing station has a battery rack and a parking platform. If the utility model discloses can also be applied to any charging station or trade power station etc. that have power battery to save.
It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate directions or positional relationships based on those shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
First, referring to fig. 1 to 3, the fire fighting system of the user charging and replacing power station of the present invention is described. Wherein, fig. 1 is a structural diagram of a fire fighting system for a charging and replacing power station of the present invention; fig. 2 is an appearance schematic diagram of the container type charging and replacing station of the present invention; fig. 3 is the internal structure schematic diagram of the container type charging and replacing power station.
As shown in fig. 1 and 2, in order to solve the problem of poor fire extinguishing economy of the fire extinguishing system of the existing charging and replacing power station 1, the utility model discloses a container type charging and replacing power station 1 (hereinafter or simply charging and replacing power station 1) includes a shell 11, and the inside battery rack 12, the parking platform 13 and the battery replacing robot 14 that are provided with of shell 11. The battery rack 12 is stored with a plurality of power batteries 2, the parking platform 13 is used for parking the vehicle to be replaced, and the battery replacing robot 14 is used for shuttling between the battery rack 12 and the parking platform 13 so as to complete the action of replacing the power batteries 2 of the vehicle to be replaced. Particularly, a fire fighting system is also configured in the charging and replacing station 1, the fire fighting system mainly comprises a battery monitoring subsystem, a battery transferring subsystem, an open fire monitoring subsystem, a fire extinguishing subsystem, an alarm subsystem and a control subsystem, and the control subsystem is respectively connected with other subsystems and used for acquiring information sent by the other subsystems and controlling the corresponding subsystems to act based on the information.
Specifically, the battery monitoring subsystem can acquire state information of the power battery 2, judge whether the power battery 2 is in a thermal runaway state based on the state information, and send alarm information when the power battery 2 is in the thermal runaway state; after the control subsystem acquires the alarm information, a transfer instruction is sent to the battery transfer subsystem based on the alarm information; the battery transfer subsystem can transfer the power battery 2 in the thermal runaway state from the battery rack 12 to the parking platform 13 based on a transfer instruction, so as to perform cooling, fire extinguishing and other treatments on the power battery 2. When the power battery 2 is transferred to the parking platform 13, the control subsystem controls the open fire monitoring subsystem to start, the open fire monitoring subsystem collects images of the power battery 2 on the parking platform 13, determines whether the power battery 2 is in a fire state or not based on the images, and sends out a fire extinguishing signal when the power battery 2 is in the fire state; after the control subsystem acquires the fire extinguishing signal, the fire extinguishing subsystem sends a fire extinguishing instruction to the fire extinguishing subsystem based on the fire extinguishing signal, and then the fire extinguishing subsystem extinguishes the power battery 2 based on the fire extinguishing instruction.
In this way, the utility model discloses a fire extinguishing system can compromise to fill and trade the fire control safety and the fire control economy nature of power station 1, reduces the fire control construction cost and the fire control loss of firm. Specifically, the battery monitoring subsystem acquires the state information of the power battery 2, and can effectively judge whether the power battery 2 is in a thermal runaway state. When power battery 2 appears the thermal runaway, in time send alarm information, then control subsystem sends the transfer instruction based on this alarm information, and the battery shifts subsystem shifts power battery 2 that is in the thermal runaway to parking platform 13 from battery frame 12 based on this transfer instruction and deals with, can effectively keep apart power battery 2 with the remaining battery of thermal runaway, avoids all the other batteries and electrical equipment impaired, improves fire control security and economic nature. The open fire monitoring subsystem and the fire extinguishing subsystem are arranged, so that the power battery 2 transferred to the parking platform 13 can be effectively monitored, fire can be intensively extinguished on a single battery when fire occurs, and the fire extinguishing effect is improved.
The fire fighting system of the user charging and replacing power station 1 of the present invention is described in detail with reference to fig. 1 to 7, wherein fig. 4 is a schematic structural diagram of the container type charging and replacing power station 1 on the parking platform side; FIG. 5 is a view of FIG. 4 taken along direction A; FIG. 6 is a view of FIG. 4 taken along direction B; fig. 7 is a schematic diagram of the area division of the power battery according to the present invention.
As shown in fig. 1, in one possible embodiment, the battery monitoring subsystem may include a monitoring alarm unit, and a battery data monitoring unit and a battery smoke monitoring unit respectively connected to the monitoring alarm unit, where the battery data monitoring unit is capable of acquiring internal state information of the power battery 2, determining whether the power battery 2 is in a normal state based on the internal state information, and sending the acquired internal state information when the power battery 2 is in an abnormal state. The battery smoke monitoring unit can acquire external state information of the power battery 2, judge whether the power battery 2 is in a thermal runaway state or not based on the external state information, and send out a thermal runaway signal when the power battery 2 is in the thermal runaway state. The monitoring alarm unit is set to be capable of acquiring internal state information and a thermal runaway signal, judging whether the power battery 2 has a thermal runaway risk or is in a thermal runaway state or not based on the internal state information and the thermal runaway signal, and sending alarm information when the power battery 2 has the thermal runaway risk or is in the thermal runaway state.
Specifically, the internal State information of the power battery 2 may include a State of Charge (SOC), a cell voltage, a cell temperature, a temperature rise rate, a cell voltage difference, or alarm information. The BATTERY data monitoring unit may directly obtain one or more of the above internal state information, for example, obtain the internal state information of the power BATTERY 2 through connection and communication between a charger on the BATTERY rack 12 and a BATTERY management system (BATTERY MANAGEMENT SYSTEM, referred to as BMS) of the power BATTERY 2, or directly collect the internal state information of the power BATTERY 2 when the BATTERY management system BMS of the power BATTERY 2 is abnormal, and the like. After the internal state information is acquired, the battery data monitoring unit judges whether the power battery 2 is in a normal state or not based on the internal state information, and uploads the internal state information to the monitoring alarm unit when the power battery 2 is in an abnormal state. For example, the battery data monitoring unit may include a control chip, such as a Programmable Logic Controller (PLC), and the battery data monitoring unit may determine whether the power battery 2 is in a normal state by processing, calculating, comparing and the like the collected internal state information through the control chip, and send the internal state information or directly upload the internal state information to the monitoring alarm unit when the determination result is that the power battery 2 is in an abnormal state. It should be understood that the battery monitoring subsystem may also be other devices that can perform related functions, such as an industrial personal computer, etc.
It should be noted that, in the present embodiment, the normal state refers to a state where the internal parameter of the power battery 2 does not exceed the safety threshold or the internal battery management system does not generate the warning information when the power battery is stored in the battery rack 12 or during the charging and discharging processes, and correspondingly, the abnormal state refers to a state where the internal parameter of the power battery 2 exceeds the safety threshold or the internal battery management system sends the warning information, which may cause the power battery 2 to generate the thermal runaway. For example, the normal temperature range of the power battery 2 during the charging process is 20 ℃ to 60 ℃, when the monitored cell temperature is below 60 ℃, the power battery 2 is determined to be in a normal state, and when the monitored cell temperature exceeds 60 ℃, the power battery 2 is determined to be in an abnormal state. For another example, when the management system BMS of the power battery 2 does not issue the warning message, it is determined that the power battery 2 is in the normal state, and when the management system BMS issues the warning message, it is determined that the power battery 2 is in the abnormal state.
The external state information of the power battery 2 comprises smoke concentration, the battery smoke monitoring unit correspondingly comprises a smoke detector capable of detecting the smoke concentration, the smoke detector can be arranged on the battery frame 12 and close to the pressure release valve of the power battery 2, and each power battery 2 is correspondingly provided with one smoke detector. The smoke detector can monitor whether the pressure release valve of the power battery 2 sprays smoke in real time, when the smoke reaches a certain concentration, the internal sampling circuit changes, the built-in main control chip judges the variable quantities to determine whether a fire alarm occurs, once the fire alarm is determined, a thermal runaway signal is sent out (if the signal is an on-off signal of a relay), and meanwhile, a buzzer can be started to alarm.
The monitoring alarm unit can also comprise a control chip, such as a programmable logic controller or an industrial personal computer. The monitoring alarm unit can receive or acquire the internal state information sent by the battery data monitoring unit, then analyze and compare the internal state information, for example, compare the core temperature of the power battery 2 with the maximum threshold value or analyze the rising trend of the core temperature within several seconds, and determine whether the power battery 2 has a thermal runaway risk based on the analysis and comparison result. When the power battery 2 has a risk of thermal runaway, timely sending alarm information, such as the alarm information including the position information of the power battery 2 having the risk of thermal runaway, and the like, wherein the position information can be directly determined based on the number of the management system BMS of the power battery 2. The monitoring alarm unit can also receive or acquire a thermal runaway signal sent by the battery smoke monitoring unit, once the thermal runaway signal is received, the power battery 2 is proved to generate smoke, and then alarm information is directly sent based on the thermal runaway signal, for example, the alarm information includes the position information of the thermal runaway power battery 2, and the position information can be directly determined based on the position of the smoke detector.
Similarly to the battery data monitoring unit and the monitoring alarm unit, the control subsystem may also include a control chip, such as a Programmable Logic Controller (PLC). It should be understood that the battery monitoring subsystem may also be other devices that can perform related functions, such as an industrial personal computer, etc. The control subsystem can acquire the alarm information of the monitoring alarm unit and issue a corresponding control instruction based on the alarm information.
Referring to fig. 1 and 3, in one possible embodiment, the battery transfer subsystem comprises a battery pick-and-place device and a battery transport device, which can be docked with each other, the battery pick-and-place device being arranged to enable the removal of the power battery 2 from the battery rack 12, and the battery transport device being arranged to enable the transport of the power battery 2 to said parking platform 13. Preferably, the battery taking and placing device is a battery transferring mechanism 121 disposed on the battery rack 12, and the battery transporting device is the battery replacing robot 14. When replacing the power battery 2 for the electric vehicle, the battery transportation mechanism can be docked with the battery replacement robot 14, so that the fully charged power battery 2 on the battery rack 12 is transferred to the battery replacement robot 14 or the power battery 2 which receives the power shortage of the battery replacement robot 14 is transferred to the battery rack 12. The battery replacement robot 14 can perform an operation of replacing the power battery 2 for the electric vehicle by reciprocating between the battery holder 12 and the parking platform 13. The utility model discloses in, control subsystem receives alarm information after, sends the transfer instruction to battery transfer subsystem to battery transport mechanism 121 will have the thermal runaway risk or be in the power battery 2 of thermal runaway state and take out, and transport for trading electric robot 14, and trading electric robot 14 further shifts this power battery 2 to and trades the electric platform.
Referring to fig. 1, the alarm subsystem may be an alarm device capable of emitting an audible/visual alarm, such as a buzzer or an audible/visual alarm, and the buzzer or the audible/visual alarm is connected to the control subsystem, such as through a signal line, a control bus, or through a wired connection or a wireless communication connection. When the monitoring alarm unit sends alarm information, the control subsystem can control the alarm subsystem to give an alarm based on the alarm information, and remind all related personnel of evacuating in time.
Referring to fig. 4 and 6, in a possible embodiment, the open fire monitoring subsystem comprises a visual sensor 3, which is arranged at the corner of the side of the parking platform 13 and is arranged in correspondence to the parking platform 13 so as to be able to acquire an image of the power battery 2. After receiving the alarm information, the control subsystem controls the vision sensor 3 to start shooting the image of the power battery 2, and after the image is captured, the vision sensor 3 compares the image with a reference image stored in a memory to analyze whether the power battery 2 is on fire or not and the area of the fire. For example, the vision sensor 3 identifies whether the color of the battery surface changes or whether the heat generated by internal thermal runaway burns the shell or open fire is ejected from the shell based on real-time vision identification and image analysis and calculation technology. When the open fire is recognized, the vision system automatically calculates the area sprayed by the open fire and uploads a fire extinguishing signal containing the information of the fire area, such as the area code is transmitted to a control subsystem and the like. And after receiving or acquiring the fire extinguishing signal, the control subsystem sends a fire extinguishing instruction to the fire extinguishing subsystem based on the fire extinguishing signal.
Referring to fig. 7, in a possible embodiment, the area division of the battery surface may be performed as shown in fig. 7, and after the area division is completed, the area code is stored in the visual sensor 3, so that the visual sensor 3 can analyze and determine the fire area for use. Of course, the specific division manner is not limited thereto, and those skilled in the art can adjust the division manner, for example, further refine the divided region to improve the analysis accuracy of the fire area.
Referring to fig. 4-6, in one possible embodiment, the fire suppression subsystem may include a positioning injection device 4 and a reduced temperature spray unit. The cooling spray unit includes a main pipe 51 and a plurality of spray pipes 52 connected to the main pipe 51. The main pipeline 51 uses a pipeline with the diameter being DN65 consistent with that of the municipal fire-fighting pipeline, so that the water inlet end of the main pipeline 51 can be connected with the municipal fire-fighting pipeline or the municipal fire hose, and the on-off is realized through an electric control valve (such as an electromagnetic valve, an electric valve or a manual valve) arranged on the main pipeline 51 between the main pipeline 51 and the municipal fire-fighting pipeline after the connection. The spraying pipelines 52 are arranged above the parking platform 13, each spraying pipeline 52 is provided with a plurality of sprinkling nozzles 53, the number of the sprinkling nozzles 53 can be determined according to the spraying range, and the spraying area at least can cover the whole parking platform 13 and is free of intervals in principle. In this embodiment, the shower is two, selects the pipeline that the diameter is DN25, through the change of pipe diameter, provides delivery port pressure, ensures that rivers can be abundant atomizing behind the shower head, effectively reduces air temperature and combustible smoke content. Two shower pipes are arranged side by side along the length direction of parking platform 13, and the length of every shower pipe is roughly equal to parking platform 13's length, and the end of shower pipe uses the spiral cover airtight, does not switch on with other pipelines, keeps intraductal pressure. When cooling shower line 52 opens, watering shower nozzle 53 sprinkles the parking platform 13 with fire water to reduce the bulk temperature of parking platform 13 side, and subside the processing fast to the combustible smoke and dust in the air, prevent secondary disaster's production.
With continued reference to fig. 4 to 6, the positioning and spraying device 4 is arranged near the parking platform 13, is connected to the control subsystem, and is capable of spraying a fire extinguishing agent to the fire area on the power battery 2 based on a fire extinguishing command issued by the control subsystem. Specifically, the positioning injection device 4 is a fire monitor which is disposed at a further wall corner on the parking platform 13 side, and the fire monitor can realize the adjustment of the direction of the injection port by adjusting the rotation angles in the vertical direction and the horizontal direction, thereby ensuring that the upper surface of the entire power battery 2 can be covered. The water inlet pipeline of the fire monitor can adopt a DN65 pipeline and is connected with the main pipeline 51, so that the water pressure is kept in a high range. After receiving a fire extinguishing instruction containing the information of the fire area sent by the control subsystem, the fire water monitor automatically adjusts the spraying angle, and the spraying opening is aligned to the fire area to spray for a certain time, such as 20-30 minutes.
Referring to fig. 1, 4 to 6, in a possible embodiment, the housing 11 is further provided with a front vent door 61 and a rear vent door 62, and the front vent door 61 and the rear vent door 62 are provided on two opposite side plates of the housing along the length direction of the parking platform 13. Preferably, the front ventilation door 61 and the rear ventilation door 62 are automatic rolling doors, the control subsystem is respectively connected with the front ventilation door 61 and the rear ventilation door 62, so that when thermal runaway occurs in power, the front ventilation door 61 and the rear ventilation door 62 are controlled or manually controlled by the control subsystem to open for ventilation, combustible smoke and high-temperature gas released after thermal runaway of the power battery 2 are discharged, meanwhile, rapid intervention of external fire fighters and fire fighting facilities is facilitated, and explosion caused by combustible smoke accumulation in a closed environment is effectively prevented.
Further, a fireproof door 7 is disposed in the housing 11, and the fireproof door 7 is disposed between the battery rack 12 and the parking platform 13. The fireproof door 7 can also be an automatic rolling door, the control subsystem is connected with the fireproof door 7, so that the fireproof door 7 is controlled or manually controlled to be closed through the control subsystem after the power battery 2 is transferred to the parking platform 13, the battery rack 12 is isolated from the parking platform 13, and the battery and equipment on the side of the battery rack 12 are effectively protected from damage. The fire door 7 should have a certain duration of fire-resistant and heat-insulating capability while satisfying a certain IP protection level, such as IPX 4. After the spraying is started, the fireproof door 7 can effectively prevent the fire spreading caused by the thermal runaway battery and prevent the sprayed high-pressure water flow from entering one side of the battery rack 12 to cause the equipment to be soaked.
The above embodiment has the advantages that: through adopting the inside state information of battery data monitoring unit control power battery 2, can appear the very first time of thermal runaway risk at power battery 2 and know, promoted fire extinguishing system's fire control efficiency. The external state information of the power battery 2 is monitored through the battery smoke monitoring unit, a thermal runaway signal can be sent immediately when the power battery 2 generates smoke, and the power battery 2 can be moved conveniently and timely by the battery transfer subsystem. The power battery 2 is transferred by using the battery transfer mechanism 121 arranged on the battery rack 12 and the battery replacing robot 14 in the battery charging and replacing station 1, so that the mobility and flexibility of the existing equipment in the battery charging and replacing station 1, especially the battery replacing robot 14 can be fully utilized, and the development cost of a fire fighting system is effectively reduced. Adopt vision sensor 3 through naked light control subsystem to and the subsystem of putting out a fire adopts location injection apparatus 4, makes when power battery 2 is on fire, can go out power battery 2's the region of firing through the accurate analysis of the image that vision sensor 3 gathered, thereby control location injection apparatus 4 sprays this region, furthest practices thrift the fire control water, improves the utilization ratio of water resource, improves the effect of putting out a fire of naked light. Through setting up the cooling and spraying unit, can be to air rapid cooling, subside the processing rapidly to the combustible smoke and dust in the air simultaneously, prevent secondary disaster's emergence. Through being connected main line 51 and municipal administration pipeline, can also utilize municipal administration fire water to put out a fire and spray, directly cool down to the inside of the 2 inside modules of power battery out of control of heat to reach and put out a fire fast effectively. Through ventilation door 61 and back ventilation door 62 before setting up on shell 11, can play the effect of in time airing exhaust when power battery 2 is on fire, also make things convenient for the quick intervention of fire fighter and fire control equipment simultaneously, effectively prevent that the circumstances such as explosion that combustible smoke gathering leads to under the airtight environment from taking place. Through set up fire door 7 between parking platform 13 and battery frame 12, can in time keep apart it with battery frame 12 after power battery 2 is shifted parking platform 13, effectively protect the battery and the equipment of battery frame 12 one side not damaged. Through setting up control subsystem for the fire extinguishing system of this application can realize automatic alarm and power battery 2's transfer when power battery 2 has the thermal runaway risk or is in the thermal runaway state, has improved the degree of automation and the fire control response speed of filling and trading power station 1.
Through setting up battery data monitoring unit and alarm subsystem, make the utility model discloses a fire extinguishing system still has the function of fire control early warning, and battery data monitoring unit just can monitor power battery 2's internal state information before the condition of a fire appears to in time send instruction control alarm subsystem to report to the police when internal state information is in abnormal state, take fire control measure in advance with the suggestion staff, guarantee personnel's safety.
It should be noted that the above preferred embodiments are only used for illustrating the principle of the present invention, and are not intended to limit the protection scope of the present invention. The utility model discloses do not deviate under the prerequisite of principle, technical personnel in the field can adjust the mode of setting up to the aforesaid, so that the utility model discloses can be applicable to more specific application scene.
For example, in an alternative embodiment, one skilled in the art could add or subtract subsystems of the fire protection system as long as the requirements include at least a battery monitoring subsystem and a battery transfer subsystem. For example, the fire fighting system may not be provided with a control subsystem, but manually control the operation of each subsystem; for example, the battery monitoring subsystem can only comprise a battery data monitoring unit and a battery smoke monitoring unit, the setting of a monitoring alarm unit is omitted, and the functions of the monitoring alarm unit are all transferred to the control subsystem; as another example, the fire suppression subsystem may include only the positioning spray devices 4 or only the cooling spray units, etc.
For another example, in an alternative embodiment, the battery smoke monitoring unit is not arranged exclusively, and those skilled in the art can adjust the battery smoke monitoring unit arbitrarily without departing from the principles of the present invention, as long as the adjustment can effectively collect the external state information of the power battery 2. For example, besides the smoke detector, a flame detector, a temperature sensor and other components can be selected; the setting position of the smoke detector can be changed, and the requirement that each smoke detector can collect the data of one power battery 2 is met.
For another example, in another alternative embodiment, the battery transfer system may not employ the battery transfer mechanism 121 disposed on the charging rack and the swapping robot 14 in the charging and swapping station 1, but may separately provide a mechanism and a device dedicated for taking and placing the power battery 2 and transferring the power battery 2.
For another example, in another alternative embodiment, the open fire monitoring subsystem is not always arranged, and any possible arrangement may be used as the open fire monitoring subsystem on the premise that the image of the power battery 2 can be collected and whether the power battery 2 is on fire or not can be analyzed. For example, infrared/ultraviolet cameras, flame detectors, etc. may also be employed as the open flame monitoring subsystem.
For another example, in another alternative embodiment, the positioning of the injection device 4 can be any device capable of adjusting the injection angle, in addition to the fire monitor.
For another example, in another alternative embodiment, the length, the arrangement direction, the number, etc. of the spraying pipes 52 can be adjusted by those skilled in the art, as long as the arrangement of the spraying pipes 52 can effectively cool down and extinguish the fire of the parking platform 13.
For example, in another alternative embodiment, the fire extinguishing agent may be used in addition to municipal fire-fighting water, so long as the agent is effectively sprayed. For example, gaseous extinguishing agents such as carbon dioxide may also be used.
For another example, in an alternative embodiment, the fire fighting system of the present invention may further include one or more of a pressurization subsystem, an exhaust subsystem, and a drainage subsystem. Specifically, the pressurization subsystem comprises a storage device, a pressure detection unit and a power unit, and the pressure detection unit and the power unit are connected with the control subsystem. The storage device may be a water tank or a water pool, which may be disposed outside the charging and replacing station 1, and is communicated with the main pipeline 51 through a pressurization pipeline as a supplement to the fire water. The storage device can be used for supplementing water by connecting with a municipal pipeline, and certainly, the storage device can also be used for supplementing water regularly by other water supplementing facilities without connecting with the municipal pipeline. The pressure detection unit is a pressure gauge which is arranged on the main pipeline 51 and used for detecting the water flow pressure of the main pipeline 51 and uploading the detection result to the control subsystem, and the power unit is a booster pump which can be arranged on the main pipeline 51 or a booster pipeline. The control subsystem controls the booster pump to start when the water flow pressure is lower after receiving the detection result of the water flow pressure, so that the water flow pressure of the main pipeline 51 is improved in a mode of pumping water from the storage device to supplement the water flow pressure to the main pipeline 51, and the spraying effect is ensured.
The exhaust subsystem comprises an exhaust fan which can adopt a direct current fan or an alternating current fan, is arranged on the shell 11 of the charging and replacing station 1 and is connected with the control subsystem to receive the control of the control subsystem, and is opened when a fire alarm occurs to quickly remove smoke in the charging and replacing station 1.
Drainage subsystem includes the hole or the water drainage tank that leaks that parking platform 13 bottom set up, and when the dangerous situation of fire control appears, the start fire extinguishing subsystem sprays power battery 2 and sprays the back, through the hole or the water drainage tank that leaks of bottom, discharges the shower water fast, reduces the equipment bubble water risk that fills that the process of spraying leads to trades in the station 1.
Of course, the above alternative embodiments, and the alternative embodiments and the preferred embodiments can also be used in a cross-matching manner, so that a new embodiment is combined to be suitable for a more specific application scenario.
Referring now to fig. 2-6, one possible workflow of the fire fighting system of the present invention is described.
In a possible fire fighting process, a battery data monitoring unit acquires internal state information of a certain power battery 2, judges whether the power battery 2 is in a normal state based on the state information → further uploads the state information to a monitoring alarm unit → the monitoring alarm unit analyzes based on the state information, once the power battery 2 is analyzed to have a thermal runaway risk, immediately sends alarm information → a control subsystem receives the alarm information, firstly controls the alarm subsystem to carry out sound-light alarm to prompt workers to evacuate safely, then controls a battery transfer mechanism 121 and a battery replacement robot 14 to move, transfers the power battery 2 to a parking platform 13, controls a front ventilation door 61 and a rear ventilation door 62 to be opened simultaneously in the transferring process, controls a fire door 7 to be closed → controls the power battery 2 to be closed after the power battery 2 reaches the parking platform 13, the vision sensor 3 collects images of the power battery 2 and analyzes whether the power battery is on fire, the ignition area is determined and the serial number of the ignition area is uploaded to the control subsystem → after the control subsystem receives the serial number of the ignition area, the fire fighting water cannon is controlled to adjust the injection angle and aims at the ignition area to conduct injection fire extinguishing, meanwhile, the cooling spray unit is started to conduct cooling spray → the spray process to the parking platform 13, the vision sensor 3 continuously collects images and analyzes whether the open fire is extinguished, when the open fire is extinguished through analysis, the spray of the fire fighting water cannon is suspended, the cooling spray system is kept continuously started → if the open fire is reignited, the control subsystem starts the fire fighting water cannon again to conduct injection fire extinguishing on the power battery 2 until the open fire is extinguished, and the fire fighting system is manually stopped.
Referring to fig. 1 to 3, the utility model also provides a fill and trade power station 1, should fill and trade power station 1 and include battery holder 12, parking platform 13, trade electric robot 14 and the fire extinguishing system in the above-mentioned embodiment.
It will be understood by those skilled in the art that although not depicted, the monitoring alarm unit or control subsystem described above may also include some other well-known structures such as processors, controllers, memories, etc., including but not limited to ram, flash, rom, prom, eprom, volatile, nvm, serial, parallel, registers, etc., and processors, including but not limited to CPLD/FPGA, DSP, ARM processor, MIPS processor, etc., which are not shown in the drawings in order to unnecessarily obscure embodiments of the present disclosure.
Various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that microprocessors or Digital Signal Processors (DSPs) may be used in practice to implement some or all of the functionality of some or all of the components in servers, clients, or the like according to embodiments of the present invention. The present invention may also be embodied as an apparatus or device program (e.g., PC program and PC program product) for performing a portion or all of the methods described herein. Such a program implementing the invention may be stored on a PC readable medium or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.
Claims (19)
1. A fire fighting system for a charging and replacing station is characterized in that the charging and replacing station comprises a shell, a battery rack and a parking platform, wherein the battery rack and the parking platform are arranged in the shell, a plurality of power batteries are stored on the battery rack, the fire fighting system comprises a battery monitoring subsystem and a battery transfer subsystem, and the battery monitoring subsystem is arranged to be capable of acquiring state information of the power batteries, judging whether the power batteries have a thermal runaway risk or are in a thermal runaway state based on the state information, and sending alarm information when the power batteries have the thermal runaway risk or are in the thermal runaway state;
the battery transfer subsystem is configured to transfer a power battery at risk of thermal runaway or in a thermal runaway condition from the battery rack to the parking platform for disposal of the power battery.
2. A fire protection system for a charging and replacement station as claimed in claim 1, wherein the battery transfer subsystem comprises a battery pick-and-place device and a battery transport device which are dockable with each other, the battery pick-and-place device being arranged to enable the power battery to be removed from the battery rack, the battery transport device being arranged to enable the power battery to be transported to the parking platform.
3. The fire fighting system for the charging and replacing station as claimed in claim 2, wherein the battery pick-and-place device is a battery transfer mechanism on the battery rack; and/or
The battery transportation device is a battery replacing robot in the battery charging and replacing station.
4. The fire fighting system for the charging and replacing station as recited in claim 1, wherein a front vent door and a rear vent door are further provided on the housing, and the front vent door and the rear vent door are provided on two opposite side plates of the housing along a length direction of the parking platform.
5. A fire protection system for a charging and replacement station as defined in claim 4, wherein the front and rear ventilation doors are automatic roll-up doors.
6. A fire fighting system for a charging and replacing station as defined in claim 1, wherein a fire door is further disposed in the housing, the fire door being disposed between the battery rack and the parking platform.
7. A fire protection system for a charging and replacement station as claimed in claim 6, wherein the fire door is an automatic roll-up door.
8. A fire fighting system for a charging and replacing station as defined in claim 1, further comprising an exhaust subsystem including a blower disposed at the housing corresponding to the parking platform.
9. The fire fighting system for the charging and replacing station as claimed in claim 1, wherein the battery monitoring subsystem comprises a battery data monitoring unit and a monitoring alarm unit connected with each other, the battery data monitoring unit is configured to acquire internal state information of the power battery, determine whether the power battery is in a normal state based on the internal state information, and send out the internal state information when the power battery is in an abnormal state;
the monitoring alarm unit is set to acquire the internal state information, judges whether the power battery has a thermal runaway risk or not based on the internal state information, and sends the alarm information when the power battery has the thermal runaway risk.
10. The fire protection system for the charging and replacing station as claimed in claim 9, wherein the internal state information includes one or more of a remaining electric quantity value, a cell voltage, a cell temperature, a temperature rise rate, a cell differential pressure, and alarm information.
11. A fire fighting system for a charging and replacing station as defined in claim 9, wherein the battery monitoring subsystem further comprises a battery smoke monitoring unit connected to the monitoring alarm unit, the battery smoke monitoring unit being configured to collect external status information of the power battery, determine whether the power battery is in a thermal runaway state based on the external status information, and send a thermal runaway signal to the monitoring alarm unit when the power battery is in the thermal runaway state;
the monitoring alarm unit is further configured to acquire the thermal runaway signal and send the alarm information based on the thermal runaway signal.
12. A fire fighting system for a charging and replacing station as defined in claim 11, wherein the external status information includes smoke concentration, the battery smoke monitoring unit includes smoke detectors capable of detecting the smoke concentration, one smoke detector is correspondingly disposed for each power battery, and the smoke detectors are disposed on the battery rack near pressure relief valves of the power batteries.
13. The fire fighting system for the charging and replacing station as claimed in claim 1, further comprising a control subsystem, the control subsystem being connected with the battery monitoring subsystem and the battery transfer subsystem, respectively,
the control subsystem is set to be capable of obtaining the alarm information and sending a transfer instruction to the battery transfer subsystem based on the alarm information, so that the battery transfer subsystem transfers the power battery with the thermal runaway risk or in the thermal runaway state to the parking platform based on the transfer instruction.
14. The fire fighting system for the charging and replacing power station as claimed in claim 13, further comprising an open fire monitoring subsystem and a fire extinguishing subsystem, the control subsystem being connected with the open fire monitoring subsystem and the fire extinguishing subsystem respectively,
the open fire monitoring subsystem is arranged to be capable of acquiring images of a power battery at the parking platform, determining whether the power battery is in a fire state based on the images, and sending a fire extinguishing signal when the power battery is in the fire state;
the control subsystem is arranged to acquire the fire extinguishing signal and send a fire extinguishing instruction to the fire extinguishing subsystem based on the fire extinguishing signal;
the fire extinguishing subsystem is arranged to extinguish the fire of the power battery based on the fire extinguishing instruction.
15. A fire protection system for a charging and replacement station as claimed in claim 14, wherein the open fire monitoring subsystem is further arranged to determine a fire area of the power battery surface when the power battery is in a fire state and to issue a fire suppression signal containing information of the fire area;
the control subsystem is further configured to send a fire suppression instruction to extinguish a fire to the fire area based on the fire suppression signal.
16. A fire protection system for a charging and replacement station as defined in claim 15, wherein the open fire monitoring subsystem includes a visual sensor disposed proximate the parking platform.
17. A fire protection system for a charging and replacement station as claimed in claim 14, wherein the fire suppression subsystem comprises a positioning injection device disposed near the parking platform, the control subsystem being connected to the positioning injection device, the positioning injection device being configured to inject a fire suppression agent to a target area on the power battery based on the fire suppression command.
18. A fire fighting system for a charging and replacing station as defined in claim 14, wherein the fire extinguishing subsystem further comprises a cooling spray unit, the cooling spray unit comprises a main pipeline and a spray pipeline connected to each other, the spray pipeline is disposed above the parking platform and provided with a spray nozzle, the main pipeline is provided with an electric control valve, the electric control valve is connected to the control subsystem, and the electric control valve is configured to be opened based on the fire extinguishing instruction.
19. A charging and swapping station, characterized in that the charging and swapping station comprises a fire fighting system according to any one of claims 1-18.
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