Fire extinguishing device and system for charging and swapping station, charging and swapping station and fire extinguishing method

Abstract

The application relates to the field of fire-fighting technology, in particular to a fire-fighting device, system, charging and replacing station and fire-fighting method for the charging and replacing station. The application aims to solve the problems of poor effect and big hidden danger of the existing fire-fighting system of the charging and replacing station. For the purpose, the fire-fighting device comprises a first fire-fighting pipeline and a second fire-fighting pipeline, a first end of the first fire-fighting pipeline is communicated with a fire-fighting water source through a first on-off valve, a first end of the second fire-fighting pipeline is communicated with the fire-fighting water source through a second on-off valve, and a second end of the second fire-fighting pipeline is provided with a second spraying part, the first spraying part is arranged towards a battery lifting device, and the second spraying part is arranged towards a parking platform. The application can improve the fire-fighting effect of the charging and replacing station and eliminate the fire hazard.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fire fighting technology, in particular to a fire fighting device, system, charging and battery swapping station and fire fighting method for the charging and battery swapping station. BACKGROUND

[0002] As a fast energy supplement way, the charging and battery swapping station has been included in the development plan of more and more vehicle factories. Usually, the charging and battery swapping station is arranged with parking platforms and battery storages. The parking platforms are used for battery replacement of vehicles to be replaced, and the battery storages store a plurality of power batteries. Since the battery may generate thermal runaway due to charging process or instability of the battery itself, the fire fighting system is indispensable in the charging and battery swapping station.

[0003] The traditional battery fire fighting scheme of the charging and battery swapping station is: (1) arranging a fire fighting device at each storage position of the battery storage; and (2) arranging a fire fighting device above the parking platform. In the first scheme, when a thermal runaway battery is detected, the fire fighting device is directly started to fight fire in the entire battery storage. In the second scheme, the thermal runaway battery is transferred to the parking platform by a transfer mechanism, and the battery pack is fought by the fire fighting device.

[0004] The defects of the above-mentioned traditional fire fighting scheme are obvious: first, the space and height of the battery storage position are limited. Arranging a fire fighting device in each storage position requires water flow to be consumed in each storage position, resulting in dispersion of water flow, and the thermal runaway battery cannot be effectively cooled, the fire fighting effect is difficult to meet the requirements, and there is a possibility that the thermal runaway battery cannot be effectively controlled. In addition, fire fighting spray pipes need to be arranged on each layer of the battery storage, which not only occupies the height space of the battery storage, but also increases the material cost and assembly time. Second, although arranging a fire fighting device above the parking platform can reduce the material cost and improve the fire fighting effect, when a vehicle is being replaced on the parking platform, the battery cannot be transferred to the replacement platform. Thus, the thermal runaway battery can only be in the battery storage, and there is no effective isolation between the thermal runaway battery and other safe batteries, which may form a greater fire hazard.

[0005] Correspondingly, there is a need in the art for a new technical solution to solve the above problems. SUMMARY

[0006] To solve at least one of the above problems in the prior art, that is, to solve the problems of poor effect and large hidden dangers existing in the fire extinguishing system of the existing charging and battery swapping station, a first aspect of the present application provides a fire extinguishing device for a charging and battery swapping station, the charging and battery swapping station comprising a box body and a parking platform, a battery compartment, a battery lifting device and a battery translation device arranged in the box body, the parking platform being arranged to be capable of carrying a vehicle to be battery swapped, the battery compartment being arranged to be capable of storing power batteries, the battery lifting device being arranged to be capable of transferring power batteries between the battery compartment and the battery translation device, and the battery translation device being arranged to be capable of transferring power batteries between the battery lifting device and the parking platform, the fire extinguishing device comprising a first fire extinguishing pipeline and a second fire extinguishing pipeline, a first end of the first fire extinguishing pipeline being in communication with a fire water source through a first on-off valve, and a second end of the first fire extinguishing pipeline being provided with a first spraying part, the first spraying part being arranged towards the battery lifting device, a first end of the second fire extinguishing pipeline being in communication with the fire water source through a second on-off valve, and a second end of the second fire extinguishing pipeline being provided with a second spraying part, the second spraying part being arranged towards the parking platform.

[0007] In the preferred technical solution of the fire extinguishing device for the charging and battery swapping station, the first spraying part comprises a plurality of first spraying pipes in communication with the second end of the first fire extinguishing pipeline, the plurality of first spraying pipes being located above the battery lifting device, and a plurality of first spraying holes being formed in each of the first spraying pipes.

[0008] In the preferred technical solution of the fire extinguishing device for the charging and battery swapping station, the first spraying part comprises a plurality of first spraying pipes in communication with the second end of the first fire extinguishing pipeline, the plurality of first spraying pipes being located above the battery lifting device, and a plurality of first spraying holes being formed in each of the first spraying pipes.

[0009] In the preferred technical solution of the fire extinguishing device for the charging and battery swapping station, the fire extinguishing device further comprises a cooling pipe in communication with the second end of the first fire extinguishing pipeline, the cooling pipe being located above the battery compartment, and a cooling spraying head being arranged on the cooling pipe.

[0010] In the preferred technical solution of the fire extinguishing device for the charging and battery swapping station, the fire extinguishing device further comprises a third fire extinguishing pipeline, a first end of the third fire extinguishing pipeline being in communication with the fire water source through a third on-off valve, and a second end of the third fire extinguishing pipeline being provided with a plurality of second spraying pipes, each of the second spraying pipes extending to one position of the battery compartment, and a second spraying hole being formed in each of the second spraying pipes.

[0011] In the preferred technical solution of the fire extinguishing device for the charging and battery swapping station, the second spraying part comprises a plurality of second spraying nozzles in communication with the second end of the second fire extinguishing pipeline, each of the second spraying nozzles being arranged towards the parking platform.

[0012] In the preferred technical solution of the fire-fighting device for the charging and swapping station, a partition plate is arranged between the parking platform and the battery compartment, and the second nozzle is arranged on the side of the partition plate close to the battery compartment.

[0013] In the preferred technical solution of the fire-fighting device for the charging and swapping station, the fire-fighting device further comprises a water pump, an inlet of the water pump is communicated with the fire-fighting water source, and an outlet of the water pump is communicated with the first fire-fighting pipeline and the second fire-fighting pipeline.

[0014] In the preferred technical solution of the fire-fighting device for the charging and swapping station, the fire-fighting device comprises a plurality of water pumps, and the plurality of water pumps are connected in parallel through pipelines.

[0015] The second aspect of the present application provides a fire-fighting system for a charging and swapping station, comprising: a fire-fighting device, which is any one of the fire-fighting devices in the above preferred technical solutions; and a control subsystem connected with the fire-fighting device, which is configured to transfer a power battery with a risk of thermal runaway or in a state of thermal runaway to the battery lifting device or the parking platform, and control the fire-fighting device to perform fire-fighting treatment on the power battery on the battery lifting device or the power battery on the parking platform.

[0016] In the preferred technical solution of the fire-fighting system for the charging and swapping station, the fire-fighting system further comprises a battery monitoring subsystem connected with the control subsystem, which is configured to obtain state information of the power battery, determine whether the power battery has a risk of thermal runaway or is in a state of thermal runaway based on the state information, and send an alarm signal when the power battery has a risk of thermal runaway or is in a state of thermal runaway, and the control subsystem is further configured to transfer the power battery with a risk of thermal runaway or in a state of thermal runaway to the battery lifting device or the parking platform based on the alarm signal.

[0017] In the preferred technical solution of the fire-fighting system for the charging and swapping station, the state information comprises internal state information of the power battery, 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 obtain the internal state information, 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, and the monitoring alarm unit is configured to obtain the internal state information, determine whether the power battery has a risk of thermal runaway based on the internal state information, and send the alarm signal when the power battery has a risk of thermal runaway.

[0018] In the preferred technical solution of the fire extinguishing system for the charging and swapping station, the internal state information includes one or more of a residual capacity value, a cell voltage, a cell temperature, a temperature rise rate, a cell pressure difference, and alarm information.

[0019] In the preferred technical solution of the fire extinguishing system for the charging and swapping station, the state information includes environmental information of an environment in which the power battery is located, the battery monitoring subsystem further includes an environmental monitoring unit connected to the monitoring and alarm unit, the environmental monitoring unit is configured to be able to collect the environmental information, determine whether the power battery is in a thermal runaway state based on the environmental information, and send a thermal runaway signal to the monitoring and alarm unit when the power battery is in a thermal runaway state; the monitoring and alarm unit is further configured to be able to obtain the thermal runaway signal and issue the alarm signal based on the thermal runaway signal.

[0020] In the preferred technical solution of the fire extinguishing system for the charging and swapping station, the environmental information includes smoke concentration and / or environmental temperature.

[0021] In the preferred technical solution of the fire extinguishing system for the charging and swapping station, the fire extinguishing system further includes a vehicle monitoring subsystem, the vehicle monitoring subsystem is connected to the control subsystem, and the vehicle monitoring subsystem is configured to be able to obtain vehicle presence information of the parking platform, and the control subsystem is further configured to be able to determine whether the parking platform has a vehicle based on the vehicle presence information.

[0022] In the preferred technical solution of the fire extinguishing system for the charging and swapping station, the vehicle presence information is image information of the parking platform, the vehicle monitoring subsystem includes an image acquisition device arranged below the parking platform, the image acquisition device is capable of acquiring the image information, and the control subsystem is capable of determining whether the parking platform has a vehicle based on the image information.

[0023] In the preferred technical solution of the fire extinguishing system for the charging and swapping station, the fire extinguishing system further includes a battery transfer subsystem, the battery transfer subsystem is connected to the control subsystem, the battery transfer subsystem includes the battery lifting device and the battery translation device, and the control subsystem is further configured to control the battery transfer subsystem to act to transfer a power battery at risk of thermal runaway or in a thermal runaway state to the battery lifting device or the parking platform.

[0024] In the preferred technical solution of the fire extinguishing system for the charging and swapping station, the fire extinguishing system further includes an alarm subsystem, the alarm subsystem is connected to the control subsystem, and the control subsystem is further configured to control the alarm subsystem to issue an alarm.

[0025] In the preferred technical solution of the fire-fighting system for the charging and swapping station, the fire-fighting system further comprises a process monitoring subsystem connected with the control subsystem, and the process monitoring subsystem is configured to obtain process state information of the power battery with a risk of thermal runaway or in a state of thermal runaway when the power battery is subjected to fire-fighting treatment,

[0026] The control subsystem is further configured to control the fire-fighting device to stop fire-fighting treatment of the power battery on the battery lifting device or the power battery on the parking platform based on the process state information.

[0027] In the preferred technical solution of the fire-fighting system for the charging and swapping station, the process monitoring information is video information or image information of the power battery, and the process monitoring subsystem comprises a first video acquisition device and a second video acquisition device. The first video acquisition device is arranged at the top of the battery lifting device and is used to acquire video information or image information of the power battery on the battery lifting device. The second video acquisition device is arranged near the parking platform and is used to acquire video information or image information of the power battery on the parking platform.

[0028] The third aspect of the present application provides a charging and swapping station comprising the fire-fighting device according to any one of the preferred technical solutions or the fire-fighting system according to any one of the preferred technical solutions.

[0029] The fourth aspect of the present application provides a fire-fighting method for a charging and swapping station, wherein the charging and swapping station comprises a fire-fighting device, and the fire-fighting device is the fire-fighting device according to any one of the preferred technical solutions.

[0030] The fire-fighting method comprises:

[0031] obtaining state information of the power battery;

[0032] judging whether the power battery has a risk of thermal runaway or is in a state of thermal runaway based on the state information;

[0033] obtaining vehicle presence information of the parking platform;

[0034] judging whether a vehicle is parked on the parking platform based on the vehicle presence information;

[0035] when the power battery has a risk of thermal runaway or is in a state of thermal runaway and a vehicle is parked on the parking platform, transferring the power battery to the battery lifting device and controlling the first on-off valve to open;

[0036] When the power battery has a thermal runaway risk or is in a thermal runaway state and no vehicle is parked on the parking platform, the power battery is transported to the parking platform, and the second on-off valve is controlled to be opened.

[0037] In the preferred technical solution of the fire-fighting method for the charging and swapping station, the state information includes internal state information of the power battery, and the step of determining whether the power battery has a thermal runaway risk or is in a thermal runaway state based on the state information further includes:

[0038] Based on the internal state information, it is determined whether the power battery is in a normal state.

[0039] When the power battery is in an abnormal state, it is determined that the power battery has a thermal runaway risk.

[0040] In the preferred technical solution of the fire-fighting method for the charging and swapping station, the state information further includes environmental information of an environment where the power battery is located, and the step of determining whether the power battery has a thermal runaway risk or is in a thermal runaway state based on the state information further includes:

[0041] Based on the environmental information, it is determined whether the environment where the power battery is located is in a normal state.

[0042] When the environment is in an abnormal state, it is determined that the power battery is in a thermal runaway state.

[0043] In the preferred technical solution of the fire-fighting method for the charging and swapping station, the vehicle presence information is image information of the parking platform, and the step of determining whether a vehicle is parked on the parking platform based on the vehicle presence information further includes:

[0044] Based on the image information, it is determined whether the image information includes a mark for indicating a vehicle to be swapped.

[0045] When the image information includes the mark, it is determined that a vehicle is parked on the parking platform.

[0046] In the preferred technical solution of the fire-fighting method for the charging and swapping station, the step of transporting the power battery to the battery lifting device further includes:

[0047] The battery compartment is controlled to transport the power battery to the battery lifting device.

[0048] The battery lifting device is controlled to move to a preset height.

[0049] In the preferred technical solution of the fire-fighting method for the charging and swapping station, the step of "transporting the power battery to the parking platform" further comprises:

[0050] controlling the battery bin to transport the power battery to the battery lifting device;

[0051] controlling the battery lifting device to transport the power battery to the battery translation device;

[0052] controlling the battery translation device to move to the parking platform.

[0053] In the preferred technical solution of the fire-fighting method for the charging and swapping station, the fire-fighting method further comprises:

[0054] when the power battery has a risk of thermal runaway or is in a state of thermal runaway, issuing an alarm.

[0055] In the preferred technical solution of the fire-fighting method for the charging and swapping station, the fire-fighting method further comprises:

[0056] when the first on-off valve or the second on-off valve is opened, acquiring process state information of the power battery when it is being fire-fought;

[0057] based on the process state information, determining whether the power battery is in a controllable state;

[0058] when the power battery is in a controllable state, controlling the first on-off valve or the second on-off valve to be closed.

[0059] In the technical solution of the present application, by setting the first fire-fighting pipeline and the second fire-fighting pipeline, the first spraying part on the first fire-fighting pipeline is arranged towards the battery lifting device, and the second spraying part on the second fire-fighting pipeline is arranged towards the parking platform, which can improve the fire-fighting effect of the charging and swapping station and eliminate fire hazards. Specifically, when the power battery is in a state of thermal runaway or has a risk of thermal runaway, the specific fire-fighting method can be determined by judging whether the parking platform is parked with a vehicle: when the parking platform is parked with a vehicle, the power battery with a risk of thermal runaway or in a state of thermal runaway is transported to the battery lifting device, and the first fire-fighting pipeline is used to fire-fight the power battery. Since the battery lifting device has sufficient space relative to the battery bin and can effectively and sufficiently fire-fight the target power battery in a centralized manner, this fire-fighting method not only does not need to occupy the height space of the battery bin, but also can improve the fire-fighting effect. When the parking platform is not parked with a vehicle, the power battery with a risk of thermal runaway or in a state of thermal runaway is transported to the parking platform, and the second fire-fighting pipeline is used to fire-fight the power battery, which effectively isolates the risky battery from other safe batteries and improves the fire-fighting safety.

[0060] Further, by arranging the first spray pipe above the battery lifting device, when the power battery is on fire, the first spray pipe can be used to directly spray and cool the power battery, thereby improving the effectiveness of the fire fighting.

[0061] Further, by arranging a plurality of first nozzles around the battery lifting device, when the power battery is on fire, the nozzles can be used to accurately spray and cool the power battery, thereby improving the timeliness of the fire fighting.

[0062] Further, by arranging a cooling pipe and a cooling spray head above the battery compartment, when the power battery is on fire, the cooling spray head can be used to cool the environment of the battery compartment, thereby effectively reducing the temperature in the battery compartment and reducing the risk of damage to other safety batteries and components in the compartment.

[0063] Further, by arranging a second nozzle on the second fire fighting pipeline facing the parking platform, when the power battery is on fire, the second nozzle can be used to accurately spray and cool the power battery on the parking platform, thereby improving the effectiveness of the fire fighting.

[0064] Further, by arranging the second nozzle on the side of the partition plate close to the battery compartment, the second nozzle is not exposed to the space where the parking platform is located, does not affect the flatness of the interior decoration of the parking platform, and does not occupy the space where the parking platform is located.

[0065] By providing a fire fighting system, the charging and battery swapping station of the present application realizes active fire fighting, expands the applicability of the fire fighting device, and meets the fire fighting needs of the unattended charging and battery swapping station.

[0066] By providing a fire fighting method, the charging and battery swapping station of the present application can timely decide the fire fighting method by judging whether there is a vehicle on the parking platform when the battery has a risk of thermal runaway or thermal runaway occurs, thereby ensuring the timeliness of the fire fighting while improving the effectiveness and safety of the fire fighting.

[0067] Scheme 1: A fire fighting device for a charging and battery swapping station, characterized in that the charging and battery swapping station comprises a box body and a parking platform, a battery compartment, a battery lifting device and a battery translation device arranged in the box body, the parking platform is arranged to be able to carry a vehicle to be replaced with a battery, the battery compartment is arranged to be able to store a power battery, the battery lifting device is arranged to be able to transfer the power battery between the battery compartment and the battery translation device, and the battery translation device is arranged to be able to transfer the power battery between the battery lifting device and the parking platform.

[0068] The fire fighting device comprises a first fire fighting pipeline and a second fire fighting pipeline, a first end of the first fire fighting pipeline is communicated with a fire fighting water source through a first on-off valve, and a second end is provided with a first spray part, the first spray part is arranged towards the battery lifting device.

[0069] The first end of the second fire-fighting pipeline is communicated with a fire-fighting water source through a second on-off valve, and the second end is provided with a second spraying part, which is arranged towards the parking platform.

[0070] Option 2, the fire-fighting device for the charging and swapping station according to the scheme 1, characterized in that the first spraying part comprises a plurality of first spraying pipes communicated with the second end of the first fire-fighting pipeline, and the plurality of first spraying pipes are located above the battery lifting device, and a plurality of first spraying holes are formed in each of the first spraying pipes.

[0071] Option 3, the fire-fighting device for the charging and swapping station according to the scheme 1, characterized in that the first spraying part comprises a plurality of drainage pipes communicated with the second end of the first fire-fighting pipeline, and the plurality of drainage pipes are arranged in the circumferential direction of the battery lifting device, and each of the drainage pipes is provided with a first nozzle towards the battery lifting device.

[0072] Option 4, the fire-fighting device for the charging and swapping station according to the scheme 1, characterized in that the fire-fighting device further comprises a cooling pipe communicated with the second end of the first fire-fighting pipeline, the cooling pipe is located above the battery compartment, and the cooling pipe is provided with a cooling spraying head.

[0073] Option 5, the fire-fighting device for the charging and swapping station according to the scheme 1, characterized in that the fire-fighting device further comprises a third fire-fighting pipeline, the first end of the third fire-fighting pipeline is communicated with a fire-fighting water source through a third on-off valve, the second end of the third fire-fighting pipeline is provided with a plurality of second spraying pipes, each of the second spraying pipes extends to one position of the battery compartment, and each of the second spraying pipes is provided with a second spraying hole.

[0074] Option 6, the fire-fighting device for the charging and swapping station according to the scheme 1, characterized in that the second spraying part comprises a plurality of second nozzles communicated with the second end of the second fire-fighting pipeline, and each of the second nozzles is arranged towards the parking platform.

[0075] Option 7, the fire-fighting device for the charging and swapping station according to the scheme 6, characterized in that a partition plate is arranged between the parking platform and the battery compartment, and the second nozzles are located on the side of the partition plate close to the battery compartment.

[0076] Option 8, the fire-fighting device for the charging and swapping station according to the scheme 1, characterized in that the fire-fighting device further comprises a water pump, the inlet of the water pump is communicated with the fire-fighting water source, and the outlet of the water pump is communicated with the first fire-fighting pipeline and the second fire-fighting pipeline.

[0077] Scheme 9, the fire-fighting device for the charging and swapping station according to scheme 8, characterized in that the fire-fighting device comprises a plurality of the water pumps, and the plurality of the water pumps are connected in parallel through pipelines.

[0078] Scheme 10, a fire-fighting system for the charging and swapping station, characterized in that the fire-fighting system comprises:

[0079] a fire-fighting device according to any one of schemes 1 to 9;

[0080] a control subsystem connected with the fire-fighting device, the control subsystem being configured to transfer the power battery at risk of thermal runaway or in a thermal runaway state to the battery lifting device or the parking platform and control the fire-fighting device to perform fire-fighting treatment on the power battery on the battery lifting device or the power battery on the parking platform.

[0081] Scheme 11, the fire-fighting system for the charging and swapping station according to scheme 10, characterized in that the fire-fighting system further comprises:

[0082] a battery monitoring subsystem connected with the control subsystem, the battery monitoring subsystem being configured to acquire state information of the power battery, determine whether the power battery is at risk of thermal runaway or in a thermal runaway state based on the state information, and send an alarm signal when the power battery is at risk of thermal runaway or in a thermal runaway state,

[0083] the control subsystem being further configured to transfer the power battery at risk of thermal runaway or in a thermal runaway state to the battery lifting device or the parking platform based on the alarm signal.

[0084] Scheme 12, the fire-fighting system for the charging and swapping station according to scheme 11, characterized in that the state information comprises internal state information of the power battery, the battery monitoring subsystem comprises a battery data monitoring unit and a monitoring alarm unit connected with each other, the battery data monitoring unit being configured to acquire the internal state information, 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;

[0085] the monitoring alarm unit being configured to acquire the internal state information, determine whether the power battery is at risk of thermal runaway based on the internal state information, and send the alarm signal when the power battery is at risk of thermal runaway.

[0086] Scheme 13, the fire-fighting system for the charging and swapping station according to scheme 12, characterized in that the internal state information comprises one or more of a residual capacity value, a cell voltage, a cell temperature, a temperature rise rate, a cell pressure difference, and alarm information.

[0087] Scheme 14, the fire-fighting system for the charging and swapping station according to scheme 12, characterized in that the state information comprises environmental information of an environment in which the power battery is located, and the battery monitoring subsystem further comprises an environmental monitoring unit connected with the monitoring and alarming unit, the environmental monitoring unit is configured to be capable of collecting the environmental information, judging whether the power battery is in a thermal runaway state based on the environmental information, and sending a thermal runaway signal to the monitoring and alarming unit when the power battery is in the thermal runaway state.

[0088] The monitoring and alarming unit is further configured to be capable of obtaining the thermal runaway signal and issuing the alarm signal based on the thermal runaway signal.

[0089] Scheme 15, the fire-fighting system for the charging and swapping station according to scheme 14, characterized in that the environmental information comprises a smoke concentration and / or an environmental temperature.

[0090] Scheme 16, the fire-fighting system for the charging and swapping station according to scheme 10, characterized in that the fire-fighting system further comprises:

[0091] a vehicle monitoring subsystem connected with the control subsystem, the vehicle monitoring subsystem being configured to be capable of obtaining vehicle presence information of the parking platform,

[0092] the control subsystem being further configured to determine whether the parking platform has a vehicle based on the vehicle presence information.

[0093] Scheme 17, the fire-fighting system for the charging and swapping station according to scheme 16, characterized in that the vehicle presence information is image information of the parking platform, the vehicle monitoring subsystem comprises an image acquisition device arranged below the parking platform, the image acquisition device is capable of collecting the image information, and the control subsystem is capable of determining whether the parking platform has a vehicle based on the image information.

[0094] Scheme 18, the fire-fighting system for the charging and swapping station according to scheme 10, characterized in that the fire-fighting system further comprises:

[0095] a battery transfer subsystem connected with the control subsystem, the battery transfer subsystem comprising the battery lifting device and the battery translation device,

[0096] The control subsystem is further configured to control the battery transfer subsystem to transfer the power battery at risk of thermal runaway or in a thermal runaway state to the battery lifting device or the parking platform.

[0097] Scheme 19, the fire-fighting system for the charging and swapping station according to scheme 10, characterized in that the fire-fighting system further comprises an alarm subsystem connected with the control subsystem, and the control subsystem is further configured to control the alarm subsystem to send an alarm.

[0098] Scheme 20, the fire-fighting system for the charging and swapping station according to scheme 10, characterized in that the fire-fighting system further comprises a process monitoring subsystem connected with the control subsystem, and the process monitoring subsystem is configured to acquire process state information of the power battery at risk of thermal runaway or in a thermal runaway state when the power battery is treated by fire-fighting,

[0099] The control subsystem is further configured to control the fire-fighting device to stop treating the power battery on the battery lifting device or the power battery on the parking platform by fire-fighting based on the process state information.

[0100] Scheme 21, the fire-fighting system for the charging and swapping station according to scheme 20, characterized in that the process monitoring information is video information or image information of the power battery, and the process monitoring subsystem comprises a first video acquisition device and a second video acquisition device, the first video acquisition device is arranged at the top of the battery lifting device and used to acquire the video information or image information of the power battery on the battery lifting device, and the second video acquisition device is arranged near the parking platform and used to acquire the video information or image information of the power battery on the parking platform.

[0101] Scheme 22, a charging and swapping station, characterized in that the charging and swapping station comprises the fire-fighting device according to any one of schemes 1-9 or the fire-fighting system according to any one of schemes 10-21.

[0102] Scheme 23, a fire-fighting method for a charging and swapping station, characterized in that the charging and swapping station comprises:

[0103] a fire-fighting device, which is the fire-fighting device according to any one of schemes 1-9; and the fire-fighting method comprises:

[0104] acquiring state information of a power battery;

[0105] judging whether the power battery is at risk of thermal runaway or in a thermal runaway state based on the state information;

[0106] acquire vehicle presence information of the parking platform;

[0107] determine whether a vehicle is parked on the parking platform based on the vehicle presence information;

[0108] when the power battery has a thermal runaway risk or is in a thermal runaway state and a vehicle is parked on the parking platform, transfer the power battery to the battery lifting device and control the first on-off valve to open;

[0109] when the power battery has a thermal runaway risk or is in a thermal runaway state and no vehicle is parked on the parking platform, transfer the power battery to the parking platform and control the second on-off valve to open.

[0110] Scheme 24, the fire-fighting method for the charging and battery swapping station according to scheme 23, characterized in that the state information includes internal state information of the power battery, and the step of "determining whether the power battery has a thermal runaway risk or is in a thermal runaway state based on the state information" further includes:

[0111] determining whether the power battery is in a normal state based on the internal state information;

[0112] when the power battery is in an abnormal state, determining that the power battery has a thermal runaway risk.

[0113] Scheme 25, the fire-fighting method for the charging and battery swapping station according to scheme 23, characterized in that the state information further includes environmental information of an environment where the power battery is located, and the step of "determining whether the power battery has a thermal runaway risk or is in a thermal runaway state based on the state information" further includes:

[0114] determining whether the environment where the power battery is located is in a normal state based on the environmental information;

[0115] when the environment is in an abnormal state, determining that the power battery is in a thermal runaway state.

[0116] Scheme 26, the fire-fighting method for the charging and battery swapping station according to scheme 23, characterized in that the vehicle presence information is image information of the parking platform, and the step of "determining whether a vehicle is parked on the parking platform based on the vehicle presence information" further includes:

[0117] based on the image information, identifying whether the image information includes a mark for indicating a vehicle to be swapped;

[0118] when the image information includes the mark, determining that a vehicle is parked on the parking platform.

[0119] Scheme 27, the fire-fighting method for the charging and swapping station according to scheme 23, characterized in that the step of "transferring the power battery to the battery lifting device" further comprises:

[0120] controlling the battery compartment to transfer the power battery to the battery lifting device;

[0121] controlling the battery lifting device to move to a preset height.

[0122] Scheme 28, the fire-fighting method for the charging and swapping station according to scheme 23, characterized in that the step of "transferring the power battery to the parking platform" further comprises:

[0123] controlling the battery compartment to transfer the power battery to the battery lifting device;

[0124] controlling the battery lifting device to transfer the power battery to the battery translation device;

[0125] controlling the battery translation device to move to the parking platform.

[0126] Scheme 29, the fire-fighting method for the charging and swapping station according to scheme 23, characterized in that the fire-fighting method further comprises:

[0127] when the power battery has a risk of thermal runaway or is in a state of thermal runaway, issuing an alarm.

[0128] Scheme 30, the fire-fighting method for the charging and swapping station according to scheme 23, characterized in that the fire-fighting method further comprises:

[0129] when the first on-off valve or the second on-off valve is opened, acquiring process state information when the power battery is being fire-fought;

[0130] based on the process state information, determining whether the power battery is in a controllable state;

[0131] when the power battery is in a controllable state, controlling the first on-off valve or the second on-off valve to be closed. BRIEF DESCRIPTION OF DRAWINGS

[0132] The fire-fighting device, system, charging and swapping station and fire-fighting method for the charging and swapping station of the present application will be described below with reference to the accompanying drawings. In the drawings:

[0133] Figure 1 is an explosion diagram when the charging and swapping station of the present application is not provided with a fire-fighting device;

[0134] Figure 2 is a partial structural diagram of the charging and swapping station of the present application;

[0135] Figure 3 Structure diagram of the fire-fighting device for the charging and swapping station according to the present application;

[0136] Figure 4 System diagram of the fire-fighting system for the charging and swapping station according to the present application;

[0137] Figure 5 Flow chart of the fire-fighting method for the charging and swapping station according to the present application;

[0138] Figure 6 Logic diagram of one possible implementation of the fire-fighting method for the charging and swapping station according to the present application.

[0139] List of reference signs

[0140] 1, box; 2, parking platform; 3, battery compartment; 4, battery lifting device; 5, battery translation device; 6, fire-fighting device; 61, first fire-fighting pipeline; 611, first spraying part; 6111, first spraying pipe; 6112, drainage pipe; 6113, first nozzle; 612, cooling pipe; 613, cooling spraying head; 62, second fire-fighting pipeline; 621, second spraying part; 6211, second nozzle; 63, water pump; 64, water tank; 65, first on-off valve; 66, second on-off valve; 7, partition plate. DETAILED DESCRIPTION

[0141] The preferred embodiments of the present application 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 used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application. For example, although the following embodiments are described in combination with the container-type charging and swapping station, this application scenario is not limited, and those skilled in the art can adjust it as needed as long as the charging and swapping station has a battery compartment, a battery lifting device, a battery translation device and a parking platform.

[0142] It should be noted that in the description of the present application, the terms indicating the direction or positional relationship of "up", "down", "vertical", "horizontal", "inner", "outer" and the like are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0143] In addition, it needs to be explained that, in the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0144] Embodiment 1

[0145] First refer to Figures 1 to 3 The fire-fighting device of the present application is described. Among them, Figure 1 is the explosion diagram of the present application when the charging and battery replacement station is not provided with a fire-fighting device; Figure 2 is a partial structural diagram of the charging and battery replacement station of the present application; Figure 3 is a structural diagram of the fire-fighting device for the charging and battery replacement station of the present application.

[0146] As Figure 1 and Figure 2 shown, the charging and battery replacement station of the present application includes a box body 1 and a parking platform 2, a battery compartment 3, a battery lifting device 4 and a battery translation device 5 arranged in the box body 1, the parking platform 2 is arranged to be able to carry a vehicle to be replaced with a battery, the battery compartment 3 is arranged to be able to store a power battery, the battery lifting device 4 is arranged to be able to transfer the power battery between the battery compartment 3 and the battery translation device 5, and the battery translation device 5 is arranged to be able to transfer the power battery between the battery lifting device 4 and the parking platform 2.

[0147] For example, a plurality of storage positions for storing power batteries are arranged in the battery compartment 3. When the power batteries are placed in the storage positions, the battery compartment 3 can charge the power batteries. The parking platform 2 is used for parking and positioning the vehicle to be replaced with power batteries. When the vehicle to be replaced with power batteries is parked on the parking platform 2, the power batteries of the vehicle to be replaced with power batteries can be replaced from below (the power batteries need to be arranged at the bottom of the vehicle). The battery lifting device 4 can be an elevator, which includes a carrying table, a vertical lifting mechanism and a horizontal conveying mechanism. The vertical lifting mechanism is used to lift or lower the power batteries carried on the carrying table to a preset height. The horizontal conveying mechanism is used to convey the power batteries to the storage positions or receive the power batteries from the storage positions when the power batteries are lifted to the preset height, or convey the power batteries to the battery translation device 5 or receive the power batteries conveyed by the battery translation device 5 when the power batteries are lowered to the preset height. The battery translation device 5 can transfer the power batteries between the battery lifting device 4 and the parking platform 2, so as to realize the transfer of the power batteries from the vehicle to be replaced with power batteries to the battery lifting device 4 and the transfer of the power batteries from the battery lifting device 4 to the parking platform 2. The battery translation device 5 can be a conveyor belt or a power battery replacing robot. When the battery translation device 5 is a conveyor belt, the supporting device and the unlocking and locking device can be arranged on the parking platform 2 to realize the dismounting and mounting of the power batteries. When the battery translation device 5 is a power battery replacing robot, the supporting device and the unlocking and locking device arranged on the power battery replacing robot can realize the dismounting and mounting of the power batteries. The specific structure and operation principle of each power battery replacing device described above belong to the common sense of the prior art, and will not be described here.

[0148] It should be noted that in the present embodiment and each of the following embodiments, the transfer of the power batteries to the parking platform 2 means that the power batteries reach and stay at the parking platform 2. For example, the conveyor belt carries and conveys the power batteries to reach and stay below the parking platform 2. For another example, the power battery replacing robot carries the power batteries to reach and stay at the parking platform 2. For another example, the conveyor belt carries the power batteries to reach the parking platform 2 and conveys the power batteries to the supporting device.

[0149] Referring to Figure 2 and Figure 3 , in order to solve the problems of poor effect and great hidden danger of the existing charging and replacing station fire extinguishing system, the charging and replacing station of the present application further comprises a fire extinguishing device 6. The fire extinguishing device 6 comprises a first fire extinguishing pipeline 61 and a second fire extinguishing pipeline 62. The first end of the first fire extinguishing pipeline 61 is communicated with a fire water source through a first on-off valve 65, and the second end is provided with a first spraying part 611. The first spraying part 611 is arranged towards the battery lifting device 4. The first end of the second fire extinguishing pipeline 62 is communicated with the fire water source through a second on-off valve 66, and the second end is provided with a second spraying part 621. The second spraying part 621 is arranged towards the parking platform 2.

[0150] When the power battery is in thermal runaway or has the risk of thermal runaway, the specific fire-fighting mode can be determined by judging whether the parking platform 2 is parked with a vehicle: when the parking platform 2 is parked with a vehicle, the power battery with the risk of thermal runaway or in thermal runaway is transported to the battery lifting device 4, and the first fire-fighting pipeline 61 is used to perform fire-fighting treatment on the power battery. When the parking platform 2 is not parked with a vehicle, the power battery with the risk of thermal runaway or in thermal runaway is transported to the parking platform 2, and the second fire-fighting pipeline 62 is used to perform fire-fighting treatment on the power battery.

[0151] By setting the first fire-fighting pipeline 61 and the second fire-fighting pipeline 62, the first spray part 611 on the first fire-fighting pipeline 61 is arranged towards the battery lifting device 4, and the second spray part 621 on the second fire-fighting pipeline 62 is arranged towards the parking platform 2. The fire-fighting device 6 of the present application can improve the fire-fighting effect of the battery charging and replacing station and eliminate fire hazards. Specifically, when the parking platform 2 is parked with a vehicle, the power battery is transported to the battery lifting device 4 and the first fire-fighting pipeline 61 is used for fire-fighting treatment. Since the battery lifting device 4 has sufficient space relative to the battery compartment 3 and can perform centralized fire-fighting treatment on the target power battery, this fire-fighting mode not only does not need to occupy the height space of the battery compartment 3, but also can improve the fire-fighting effect. When the parking platform 2 is not parked with a vehicle, the power battery is transported to the parking platform 2 and the second fire-fighting pipeline 62 is used for fire-fighting treatment, which can effectively isolate the risk battery from other safe batteries and improve the fire-fighting safety.

[0152] Hereinafter, a preferred embodiment of the fire-fighting device of the present application will be described with reference to Figure 2 and Figure 3 .

[0153] As shown in Figure 2 and Figure 3 , the fire-fighting device 6 comprises a first fire-fighting pipeline 61, a second fire-fighting pipeline 62, a water pump 63, a water tank 64, etc. The water tank 64 can be arranged in the battery charging and replacing station, or arranged outside the battery charging and replacing station or at a position a certain distance away from the battery charging and replacing station. The water tank 64 stores fire-fighting water inside. The water pump 63 is provided with two, and the two water pumps 63 are connected in parallel. One water pump 63 is a main water pump, and the other is a standby water pump. In the present application, parallel connection means that the water inlets and outlets of the two water pumps 63 are respectively communicated. The water inlet of the water pump 63 is communicated with the water tank 64, and the first end (i.e. the end close to the water pump 63) of the first fire-fighting pipeline 61 is provided with a first on-off valve 65, and the first fire-fighting pipeline 61 is communicated with the water inlet of the water pump 63 through the first on-off valve 65. Similarly, the first end of the second fire-fighting pipeline 62 (i.e. the end close to the water pump 63) is provided with a second on-off valve 66, and the second fire-fighting pipeline 62 is communicated with the water inlet of the water pump 63 through the second on-off valve 66. Figure 3 The first fire-fighting pipeline 61 is provided with a first spray part 611, and the second fire-fighting pipeline 62 is provided with a second spray part 621. The first spray part 611 is arranged towards the battery lifting device 4, and the second spray part 621 is arranged towards the parking platform 2. The first fire-fighting pipeline 61 is provided with a first temperature sensor 612, and the second fire-fighting pipeline 62 is provided with a second temperature sensor 622. The first temperature sensor 612 is arranged at the first spray part 611, and the second temperature sensor 622 is arranged at the second spray part 621. The first temperature sensor 612 and the second temperature sensor 622 are respectively connected to the first on-off valve 65 and the second on-off valve 66, and the first on-off valve 65 and the second on-off valve 66 are respectively connected to the water pump 63. Figure 3The second fire-fighting pipeline 62 is provided with a second on-off valve 66 near one end of the water pump 63, and the second fire-fighting pipeline 62 is communicated with the water outlet of the water pump 63 through the second on-off valve 66.

[0154] The second end of the first fire-fighting pipeline 61 (i.e. Figure 3 The first fire-fighting pipeline 61 is provided with a first spraying part 611 at one end away from the water pump 63, and the first spraying part 611 comprises a plurality of first spraying pipes 6111 communicated with the second end of the first fire-fighting pipeline 61. The plurality of first spraying pipes 6111 are located above the battery lifting device 4, and a plurality of first spraying holes (not shown in the figure) are formed in each first spraying pipe 6111. In the present application, six first spraying pipes 6111 are provided, and each first spraying pipe 6111 extends along two pairs of edges of the top of the battery lifting device 4 above the battery lifting device 4. The bottom of the first spraying pipe 6111 is provided with a plurality of first spraying holes, and the shape and number of the first spraying holes are not specifically limited in the present application. Those skilled in the art can select them based on the specific application scenario, as long as the setting mode of the first spraying pipe 6111 and the spraying hole can cover the upper surface of the shell of the power battery as much as possible.

[0155] The first spraying part 611 further comprises a plurality of drainage pipes 6112 communicated with the second end of the first fire-fighting pipeline 61, and the plurality of drainage pipes 6112 are arranged around the periphery of the battery lifting device 4. Each drainage pipe 6112 is provided with a first nozzle 6113 facing the battery lifting device 4. In the present application, four drainage pipes 6112 are provided, and the four drainage pipes 6112 are arranged around the four vertical frames of the battery lifting device 4. The end of each drainage pipe 6112 is provided with two first nozzles 6113, and the two first nozzles 6113 on each drainage pipe 6112 are arranged as a group facing the battery lifting device 4. Among them, the setting mode of the four groups of first nozzles 6113 is preferably to cover the shell of the power battery when spraying. Among them, the covered shell is at least the upper surface of the shell of the power battery.

[0156] The fire-fighting device 6 further comprises a cooling pipe 612 communicated with the second end of the first fire-fighting pipeline 61, and the cooling pipe 612 is located above the battery compartment 3. The cooling pipe 612 is provided with a cooling spraying head 613. In the present application, the battery compartment 3 is provided with two, and the battery lifting device 4 is arranged in a row with the two battery compartments 3 and located between the two battery compartments 3. The cooling pipe 612 is provided with two, and the end of each cooling pipe 612 is provided with a cooling spraying head 613. After being set, each cooling spraying head 613 is located above the top of one of the battery compartments 3. The setting position of the cooling spraying head 613 ensures that the spraying range covers the entire battery compartment 3 below as much as possible.

[0157] Referring to Figures 1 to 3The second spraying part 621 includes a plurality of second nozzles 6211 in communication with the second end of the second fire-fighting pipeline 62, i.e. Figure 3 In the present application, the second end of the second fire-fighting pipeline 62 extends along the length direction of the parking platform 2, i.e. the direction in which the vehicle enters or exits the parking platform 2, and the second nozzles 6211 are arranged in three, which are arranged along the length direction of the parking platform 2 at the second end of the second fire-fighting pipeline 62. Each of the second nozzles 6211 is arranged towards the parking platform 2, and the directions of the three second nozzles 6211 are preferably such that they can cover the shell of the power battery when spraying. Similarly, the shell covered is at least the upper surface of the shell of the power battery.

[0158] Further, a partition plate 7 is arranged between the parking platform 2 and the battery compartment 3, which divides the box 1 into two compartments, i.e. a charging compartment and a battery replacement compartment. The battery compartment 3 and the battery lifting device 4 are located in the charging compartment, the parking platform 2 is located in the battery replacement compartment, and the battery translation device 5 is partially located in the charging compartment and partially located in the battery replacement compartment. The second nozzles 6211 are located on the side of the partition plate 7 close to the battery compartment 3. Specifically, the second end of the second fire-fighting pipeline 62 and the plurality of second nozzles 6211 arranged thereon are located in the charging compartment and extend above the battery compartment 3 close to the partition plate 7. The partition plate 7 is provided with a through hole or gap, which allows the fire-fighting water sprayed by the second nozzles 6211 to pass through and be accurately sprayed on the power battery on the parking platform 2.

[0159] When a certain power battery is in thermal runaway or at risk of thermal runaway, the corresponding fire-fighting control is performed by judging whether the parking platform 2 is parked with a vehicle: when the parking platform 2 is parked with a vehicle, the battery lifting device 4 is controlled to carry the power battery thereon and lift it to a predetermined height, then the main water pump is started, and the first on-off valve 65 is opened. If the main water pump fails, the standby water pump can be started. At this time, the plurality of first spraying pipes 6111 with bottom openings arranged above the battery lifting device 4 spray water to the surface of the power battery for cooling, and the four groups of first nozzles 6113 arranged around the battery lifting device 4 spray water to the surface of the shell of the power battery. In addition, the cooling spray heads 613 above each battery compartment 3 spray the charging compartment to reduce the ambient temperature. When the parking platform 2 is not parked with a vehicle, the battery lifting device 4 is controlled to take down the power battery and place it on the battery translation device 5, and the battery translation device 5 further drives the power battery to move to the parking platform 2, then the main water pump is started, and the second on-off valve 66 is opened. At this time, the three second nozzles 6211 on the second fire-fighting pipeline 62 spray water to the surface of the shell of the power battery.

[0160] The above setting mode has the advantages that: by arranging the first spray pipe 6111 above the battery lifting device 4, when the power battery is on fire, the first spray pipe 6111 can be used to directly spray and cool the power battery in a centralized manner, thereby improving the effectiveness of the fire fighting. By arranging a plurality of first nozzles 6113 around the battery lifting device 4, when the power battery is on fire, the nozzles can be used to accurately spray and cool the power battery, thereby improving the timeliness of the fire fighting. By arranging the cooling pipe 612 and the cooling spray head 613 above the battery compartment 3, when the power battery is on fire, the cooling spray head 613 can be used to cool the environment of the battery compartment 3, thereby effectively reducing the temperature in the battery compartment 3 and reducing the damage risk of other safety batteries and parts in the compartment. By arranging the second nozzle 6211 of the second fire fighting pipeline 62 towards the parking platform 2, when the power battery is on fire, the second nozzle 6211 can be used to accurately spray and cool the power battery on the parking platform 2, thereby improving the fire fighting effect. By arranging the second nozzle 6211 on the side of the partition plate 7 close to the battery compartment 3, the second nozzle 6211 is not exposed to the space where the parking platform 2 is located, does not affect the flatness of the interior decoration of the parking platform 2, and does not occupy the space where the parking platform 2 is located.

[0161] It should be noted that the above preferred embodiments are only used to illustrate the principles of the present application and are not intended to limit the protection scope of the present application. Those skilled in the art can adjust the above setting mode without departing from the principles of the present application, so that the present application can be applied to more specific application scenarios.

[0162] For example, in an alternative embodiment, although the above embodiment is introduced in combination with the fire fighting device 6 arranged with the water tank 64 and the water pump 63, this embodiment is not immutable, and those skilled in the art can adjust the above setting mode on the premise that the first fire fighting pipeline 61 and the second fire fighting pipeline 62 can be provided with a fire fighting water source. For example, a fire fighting pool can be used instead of the above water tank 64, or the water tank 64 and the water pump 63 can not be arranged, but the first fire fighting pipeline 61 and the second fire fighting pipeline 62 are connected with a fire hydrant, thereby saving the cost of the water tank 64 and the water pump 63.

[0163] For another example, in another alternative embodiment, although the above embodiment is introduced in combination with the fire fighting water source, the change of the fire fighting medium does not deviate from the principles of the present application. In other embodiments, the fire fighting water source can be replaced by other fire fighting agents, such as carbon dioxide gas, dry powder, water-based fire extinguishing agent, etc.

[0164] For example, in another embodiment, the skilled in the art can also add or delete the specific structure of the fire-fighting device 6 described above, so that the technical solution of the present application can be applied to more specific application scenarios. For example, in a possible embodiment, the fire-fighting device 6 further comprises a third fire-fighting pipeline, the first end of the third fire-fighting pipeline is in communication with the fire-fighting water source through a third on-off valve, and the second end is provided with a plurality of second spray pipes, each of which extends to a position of the battery compartment 3, and each of the second spray pipes is provided with a second spray hole. The above arrangement can ensure that each position of the battery compartment 3 is effectively protected, but it also increases the cost of the fire-fighting device 6 and the space occupation of the charging and swapping station. For example, the above-mentioned drainage pipe 6112, first nozzle 6113, cooling pipe 612 and cooling spray head 613 can be selectively deleted.

[0165] For example, in another alternative embodiment, although the above embodiment is described in combination with the second nozzle 6211 arranged in the charging compartment, this arrangement is only used to illustrate the principles of the present application and is not intended to limit the scope of protection of the present application. If the influence on the interior decoration of the swapping compartment is not considered, the second fire-fighting pipeline 62 can be arranged at any position above the parking platform 2, and the second end of the second fire-fighting pipeline 62 can be provided with a hole or a nozzle.

[0166] For example, in another alternative embodiment, in order to improve the stability of control, a flow switch can be arranged on the first fire-fighting pipeline 61 and the second fire-fighting pipeline 62 respectively, so as to monitor whether there is water flow in the fire-fighting pipeline during the fire-fighting process.

[0167] Of course, the above-mentioned alternative embodiments can be used in cross, and the alternative embodiments and the preferred embodiments can be used in cross, so as to combine new embodiments to be applied to more specific application scenarios.

[0168] The skilled in the art can understand that although some embodiments described herein include certain features included in other embodiments rather than other features, the combination of features of different embodiments means that it is within the scope of the present application and forms different embodiments. For example, in the claims of the present application, any one of the claimed embodiments can be used in any combination.

[0169] Embodiment 2

[0170] The following refers to Figure 4 The fire-fighting system for the charging and swapping station of the present application is introduced. Among them, Figure 4 The system diagram of the fire-fighting system for the charging and swapping station of the present application.

[0171] AsFigure 4 As shown, the fire-fighting system of the application mainly comprises a battery monitoring subsystem, a vehicle monitoring subsystem, a battery transfer subsystem, a fire-fighting device, a process monitoring subsystem, an alarm subsystem and a control subsystem, the control subsystem is connected with each of the other subsystems to obtain information sent by the other subsystems and control the corresponding subsystem to act based on the information.

[0172] Specifically, the battery monitoring subsystem can obtain state information of the power battery, determine whether the power battery has a risk of thermal runaway or is in a thermal runaway state based on the state information, and send an alarm signal when the power battery has a risk of thermal runaway or is in a thermal runaway state. The vehicle monitoring subsystem can obtain information about whether there is a vehicle on the parking platform. The battery transfer subsystem comprises a battery lifting device and a battery translation device, the battery lifting device can transfer the power battery between the battery compartment and the battery translation device, and the battery translation device can transfer the power battery between the battery lifting device and the parking platform. The fire-fighting device is the fire-fighting device in the above embodiment 1, and its specific composition and functions will not be repeated in this embodiment. The process monitoring subsystem can obtain process state information when the power battery with a risk of thermal runaway or in a thermal runaway state is processed by the fire-fighting device. The alarm subsystem can send an alarm to the outside. The control subsystem is connected with each of the above subsystems, and the control subsystem can control the battery transfer subsystem to act to transfer the power battery with a risk of thermal runaway or in a thermal runaway state to the battery lifting device or the parking platform based on the alarm signal and the information about whether there is a vehicle, control the fire-fighting device to process the power battery on the battery lifting device or the power battery on the parking platform, and control the alarm subsystem to send an alarm to the outside. During the processing, the control subsystem can also control the fire-fighting device to stop processing the power battery on the battery lifting device or the power battery on the parking platform based on the process state information obtained by the process monitoring subsystem.

[0173] The above fire-fighting system can make the charging and battery swapping station of the application realize active fire-fighting, expand the applicability of the fire-fighting device, and meet the fire-fighting needs of the unattended charging and battery swapping station.

[0174] A preferred embodiment of the fire-fighting system of the application is described below.

[0175] As Figure 4In a more preferred embodiment, the state information includes internal state information of the power battery and environmental information of the environment where the power battery is located. Accordingly, the battery monitoring subsystem can include a battery data monitoring unit, an environment monitoring unit, and a monitoring alarm unit. The battery data monitoring unit can obtain the internal state information of the power battery, and determine whether the power battery is in a normal state based on the internal state information, and send the obtained internal state information when the power battery is in an abnormal state. The environment monitoring unit can collect the environmental information of the environment where the power battery is located, and assist in determining whether the power battery is in a thermal runaway state based on the environmental information, and send a thermal runaway signal when the power battery is in a thermal runaway state. The monitoring alarm unit can obtain the internal state information and the thermal runaway signal, and determine whether the power battery has a thermal runaway risk or has been in a thermal runaway state based on the internal state information and the thermal runaway signal, and send an alarm signal when the power battery has a thermal runaway risk or has been in a thermal runaway state.

[0176] Specifically, the internal state information of the power battery can include a state of charge (SOC), a cell voltage, a cell temperature, a temperature rise rate, a cell pressure difference, or alarm information. The battery data monitoring unit can directly obtain one or more of the above internal state information, such as by connecting and communicating with the battery management system (BMS) of the power battery through the charger on the battery compartment, or directly collecting the internal state information of the power battery when the battery management system BMS of the power battery is abnormal. After obtaining the internal state information, the battery data monitoring unit determines whether the power battery is in a normal state based on the internal state information, and uploads the internal state information to the monitoring alarm unit when the power battery is in an abnormal state. For example, the battery data monitoring unit can include a control chip, such as a programmable logic controller (PLC), and the battery data monitoring unit can process, operate, compare, etc. the collected internal state information through the control chip to determine whether the power battery is in a normal state, and send the internal state information or directly upload to the monitoring alarm unit when the determination result is that the power battery is in an abnormal state. It should be understood that the battery monitoring subsystem can also be other devices that can achieve related functions, such as an industrial computer, etc.

[0177] It needs to be explained that in the present embodiment, the normal state refers to the state of the power battery when it is stored in the battery compartment or during the process of charging and discharging, and the internal parameters thereof do not exceed the safety threshold or the internal battery management system does not generate alarm information. Correspondingly, the abnormal state is the state of the power battery in which the internal parameters thereof exceed the safety threshold or the internal battery management system issues alarm information, etc., which may cause the power battery to appear thermal runaway. For example, the normal temperature range of the power battery during charging is 20-60℃, when the monitored temperature of the battery cell is below 60℃, it is determined that the power battery is in a normal state, and when the monitored temperature of the battery cell exceeds 60℃, it is determined that the power battery is in an abnormal state. For another example, when the management system BMS of the power battery does not issue an alarm information, it is determined that the power battery is in a normal state, and when the battery management system BMS issues an alarm information, it is determined that the power battery is in an abnormal state.

[0178] The environmental information of the environment in which the power battery is located includes the environmental temperature and the smoke concentration, and the corresponding environmental monitoring unit includes a smoke detector capable of detecting the smoke concentration and a temperature detector capable of detecting the temperature. The smoke detector can be arranged on the battery compartment near the pressure relief valve of the power battery, and each power battery is correspondingly provided with a smoke detector. The smoke detector can monitor in real time whether the pressure relief valve of the power battery sprays smoke, and when the smoke reaches a certain concentration, the internal sampling circuit changes, and the built-in main control chip judges the change amount to confirm whether a fire alarm occurs. Once the fire alarm is confirmed, a thermal runaway signal (such as a relay on-off electric signal) is issued, and a buzzer alarm can also be started at the same time. The temperature detector can be arranged near the power battery, such as being arranged on the frame of the position where the power battery is located, and each power battery is provided with a temperature detector or several power batteries share one temperature detector. The temperature detector can collect the temperature near the power battery in real time, and an electric signal is issued when the temperature reaches a certain threshold.

[0179] The monitoring and alarming unit can also include a control chip, such as a programmable logic controller or an industrial computer. The monitoring and alarming unit can receive or acquire the internal state information sent by the battery data monitoring unit, and then analyze and compare the internal state information, such as comparing the temperature of the power battery with the maximum threshold, or analyzing the rising trend of the temperature of the power battery within several seconds, and determining whether the power battery has a risk of thermal runaway based on the analysis and comparison result. When the power battery has a risk of thermal runaway, an alarm signal is sent in a timely manner, such as an alarm signal including the location information of the power battery with a risk of thermal runaway, which can be directly determined based on the number of the battery management system BMS. The monitoring and alarming unit can also receive or acquire the thermal runaway signal and the electrical signal sent by the environment monitoring unit. Once the above signals are received, it is proved that the temperature near the power battery is high and smoke has been generated, and then the monitoring and alarming unit directly sends an alarm signal, such as an alarm signal including the location information of the power battery with a risk of thermal runaway, which can be determined based on the position number of the smoke detector and / or the temperature detector.

[0180] The information of whether the vehicle is present or not is the image information of the parking platform. The vehicle monitoring subsystem includes an image acquisition device arranged below the parking platform, such as an industrial camera or a binocular camera. The image acquisition device can acquire the image information of the parking platform, and the control subsystem can determine whether the parking platform has a vehicle based on the image information. For example, a mark can be arranged on the chassis of the vehicle. An image containing the parking platform is captured by the industrial camera or the binocular camera, and whether the above-mentioned mark is present in the image is analyzed to determine whether a vehicle is parked on the parking platform. Preferably, the above-mentioned mark can be a visual positioning hole arranged on the vehicle bottom longitudinal beam, which is used to position the vehicle during battery replacement. It should be noted that the above-mentioned method of image analysis based on an industrial camera or a binocular camera to determine whether a preset mark is present is commonly used in the art, especially when positioning the vehicle before battery replacement. Therefore, this embodiment will not be described in detail.

[0181] Similar to the battery data monitoring unit and the monitoring and alarming unit, the control subsystem can also include a control chip, such as a programmable logic controller (PLC). It should be understood that the battery monitoring subsystem can also be other devices that can achieve related functions, such as an industrial computer. The control subsystem can acquire the alarm signal of the above-mentioned monitoring and alarming unit, and issue corresponding control instructions based on the alarm signal.

[0182] The battery transfer subsystem includes a battery lifting device and a battery translation device. The specific possible embodiments of the above-mentioned two devices can be referred to Embodiment 1, which will not be described in detail in this embodiment.

[0183] The alarm subsystem can be an alarm device capable of emitting a sound / light alarm, such as a buzzer or a sound / light alarm, which is connected to the control subsystem, such as through wired connection through a signal line, a control bus, or through wireless communication. When the monitoring alarm unit sends an alarm signal, the control subsystem can control the alarm subsystem to alarm based on the alarm signal, so as to timely remind all relevant personnel to evacuate.

[0184] The process monitoring information is video information or image information of the power battery. The process monitoring subsystem includes a first video acquisition device and a second video acquisition device. The first video acquisition device can be a camera, which is arranged at the top of the battery lifting device and used to acquire video information or image information of the power battery on the battery lifting device. For example, the first video acquisition device is fixedly arranged on the top crossbeam of the battery lifting device, and the lens thereof faces the bearing table of the battery lifting device, so as to acquire a complete power battery during fire fighting.

[0185] During the fire fighting process, the control subsystem controls the first video acquisition device or the second video acquisition device to shoot the video or image of the power battery. After the video or image is captured, the image analysis technology is used to determine whether the power battery has an open fire and / or smoke. When the open fire and / or smoke are identified, it is proved that the fire fighting effect is poor, and further measures need to be taken to dispose of the power battery. If it is analyzed that the power battery does not have an open fire and smoke, it is proved that the power battery is in a controllable state, and at this time the control subsystem can control the fire fighting device to stop the fire fighting process.

[0186] The above-mentioned embodiment has the advantages that: by monitoring the internal state information of the power battery through the battery data monitoring unit, the power battery can be known at the first time when the power battery has a risk of thermal runaway, and the fire-fighting efficiency of the fire-fighting system is improved. By monitoring the environmental information of the environment where the power battery is located through the environmental monitoring unit, a thermal runaway signal can be sent when the power battery generates smoke or catches fire, which assists in determining the thermal runaway of the power battery and the determination of the position of the thermal runaway, and facilitates the timely fire-fighting treatment of the power battery. By using the image acquisition device below the parking platform to acquire image information to determine whether there is a vehicle on the parking platform, the fire-fighting treatment mode can be determined in time when the power battery has a risk of thermal runaway. By setting the first video acquisition device and the second video acquisition device, the fire-fighting effect can be effectively determined when the power battery is sprayed with fire-fighting, and the fire-fighting device is stopped for fire-fighting treatment of the power battery in a controllable state of the power battery, thereby saving fire-fighting resources. By setting the control subsystem, the fire-fighting system of the application can realize active fire-fighting, and the automation degree and fire-fighting response speed of the charging and battery swapping station are improved.

[0187] It should be noted that the above-mentioned preferred embodiment is only used to illustrate the principle of the application, and is not intended to limit the protection scope of the application. Those skilled in the art can adjust the above-mentioned setting mode without departing from the principle of the application, so that the application can be applied to more specific application scenarios.

[0188] For example, in an alternative embodiment, those skilled in the art can add or subtract each subsystem of the fire-fighting system, as long as the fire-fighting system after adding or subtracting can realize active fire-fighting. For example, the battery monitoring subsystem can only include the battery data monitoring unit and the environmental monitoring unit, and omit the setting of the monitoring alarm unit, and instead move all the functions of the monitoring alarm unit to the control subsystem; for example, the process monitoring subsystem can also not be set, but the fire-fighting device is stopped after running for a preset time.

[0189] For another example, in an alternative embodiment, the setting mode of the environmental monitoring unit is not unique, and those skilled in the art can make any adjustment without departing from the principle of the application, as long as the adjustment can effectively acquire the environmental information of the environment where the power battery is located. For example, the smoke detector and the temperature detector can only be one of them; for another example, several power batteries share one smoke detector or temperature detector, and in this case, the position number of the smoke detector or temperature detector plays an auxiliary role in positioning the power battery, and the BMS number of the power battery plays a main role in positioning the power battery.

[0190] For example, in another alternative embodiment, the vehicle monitoring subsystem is not fixed, and any possible configuration can be used as the vehicle monitoring subsystem as long as the parking platform can be determined to be parked or not. For example, an infrared / ultraviolet camera, an infrared sensor, a radar, etc. can also be used as the vehicle monitoring subsystem.

[0191] Of course, the above-mentioned alternative embodiments can be used in combination with each other and with the preferred embodiment, so as to form new embodiments suitable for more specific application scenarios.

[0192] Those skilled in the art can understand that the combination of features of different embodiments means to be within the scope of the present application and form different embodiments, although some embodiments described herein include certain features but not others included in other embodiments. For example, in the claims of the present application, any one of the claimed embodiments can be used in any combination.

[0193] Those skilled in the art can understand that although not described, the above-mentioned monitoring alarm unit or control subsystem also includes some other well-known structures, such as a processor, a controller, a memory, etc., wherein the memory includes but is not limited to a random memory, a flash memory, a read-only memory, a programmable read-only memory, a volatile memory, a non-volatile memory, a serial memory, a parallel memory or a register, etc., and the processor includes but is not limited to a CPLD / FPGA, a DSP, an ARM processor, a MIPS processor, etc., and these well-known structures are not shown in the drawings in order not to unnecessarily obscure the embodiments of the present disclosure.

[0194] It should be further noted that the fire-fighting system provided by the above-mentioned embodiments is only illustrated by the division of the above-mentioned functional subsystems (such as the battery monitoring subsystem, the vehicle monitoring subsystem, the battery transfer subsystem, etc.), and in actual applications, the above-mentioned functional subsystems can be completed by different functional subsystems according to needs, i.e., the functional subsystems in the present embodiment are further decomposed or combined, for example, the functional subsystems of the above-mentioned embodiments can be combined into one functional subsystem, or can be further split into multiple sub-units to complete all or part of the functions described above. The names of the functional subsystems involved in the present embodiment are only for differentiation and are not considered as improper limitations on the present application.

[0195] Embodiment 3

[0196] The present application also provides a charging and battery swapping station comprising the fire-fighting device of embodiment 1 or the fire-fighting system of embodiment 2.

[0197] By installing the aforementioned fire-fighting devices within the charging and battery swapping station, the fire-fighting effectiveness of the station can be improved, and fire hazards can be eliminated. By installing the aforementioned fire-fighting system within the charging and battery swapping station, the charging and battery swapping station of this application achieves active fire-fighting, expands the applicability of the fire-fighting devices, and meets the fire-fighting needs of unattended charging and battery swapping stations.

[0198] Those skilled in the art will understand that the charging and battery swapping station, having included the aforementioned fire-fighting devices or systems, possesses all the technical effects of the aforementioned fire-fighting devices or systems, which will not be elaborated upon here.

[0199] Example 4

[0200] The following reference Figure 5 and Figure 6 This paper describes the fire protection method for charging and battery swapping stations according to this application. Among other things, Figure 5 This is a flowchart of the fire-fighting method for a charging and swapping station according to the present invention; Figure 6 This is a logic diagram of a possible implementation of the fire protection method for a charging and swapping station according to the present invention.

[0201] like Figure 5 As shown, corresponding to the fire protection system of the aforementioned charging and battery swapping station, the fire control method for the charging and battery swapping station of this application mainly includes the following steps:

[0202] S101. Obtain the status information of the power battery; for example, obtain the internal status information of the power battery and the environmental information of the environment in which it is located; wherein, the internal status information includes one or more of the following: remaining power value, cell voltage, cell temperature, temperature rise rate, cell voltage difference and alarm information, and the environmental information includes ambient temperature and / or smoke concentration.

[0203] S103. Based on state information, determine whether the power battery has a risk of thermal runaway or is in a state of thermal runaway; for example, determine whether the power battery has a risk of thermal runaway based on internal state information, and determine whether the power battery is in a state of thermal runaway based on environmental information.

[0204] S105. Obtain information on whether vehicles are present on the parking platform; for example, when it is determined that the power battery has a risk of thermal runaway or is in a state of thermal runaway, further obtain information on whether vehicles are present on the parking platform; the information on whether vehicles are present is the image information of the parking platform, and an image acquisition device, such as an industrial camera or a binocular camera, is installed below the parking platform to obtain the image information of the parking platform.

[0205] S107, judging whether a vehicle is parked on the parking platform based on the information of whether the vehicle is present; for example, by shooting an image including the parking platform and analyzing whether there is a mark representing a vehicle in the image, such as analyzing whether there is a visual positioning hole provided on the vehicle bottom longitudinal beam in the image, to judge whether a vehicle is parked on the parking platform.

[0206] S109, when the power battery has a thermal runaway risk or is in a thermal runaway state and a vehicle is parked on the parking platform, transferring the power battery to the battery lifting device and controlling the first on-off valve to open; for example, if the power battery has a thermal runaway risk or is in a thermal runaway state and it is determined through image analysis that a vehicle is parked on the parking platform, the power battery is transferred to the battery lifting device at this time, and then the first on-off valve of the fire extinguishing device is opened to make the first fire extinguishing pipeline communicate, and the power battery is sprayed with fire extinguishing through the first fire extinguishing pipeline.

[0207] S111, when the power battery has a thermal runaway risk or is in a thermal runaway state and no vehicle is parked on the parking platform, transferring the power battery to the parking platform and controlling the second on-off valve to open; for example, if the power battery has a thermal runaway risk or is in a thermal runaway state and it is determined through image analysis that no vehicle is parked on the parking platform, the power battery is transferred to the parking platform at this time, and then the second on-off valve of the fire extinguishing device is opened to make the second fire extinguishing pipeline communicate, and the power battery is sprayed with fire extinguishing through the second fire extinguishing pipeline.

[0208] The above fire extinguishing method enables the power swapping station of the present application to make timely decisions on the fire extinguishing method when the battery has a thermal runaway risk or appears thermal runaway by judging whether a vehicle is parked on the parking platform, thereby ensuring the timeliness of fire extinguishing while improving the fire extinguishing effect and fire extinguishing safety.

[0209] A preferred embodiment of the fire extinguishing method of the present application is described below.

[0210] In a preferred embodiment, the state information includes internal state information of the power battery, and step S103 further includes:

[0211] Based on the internal state information, it is determined whether the power battery is in a normal state; when the power battery is in an abnormal state, it is determined that the power battery has a thermal runaway risk. Specifically, the internal state information can include an internal remaining capacity value (State of Charge, SOC for short), a cell voltage, a cell temperature, a temperature rise rate, a cell pressure difference, or alarm information. After obtaining the internal state information, it is determined whether the power battery is in a normal state based on the internal state information, that is, whether the above parameters exceed a safety threshold or whether alarm information occurs. When the above parameters do not exceed the safety threshold or no alarm information occurs, it is determined that the power battery is in a normal state; otherwise, when the above parameters exceed the safety threshold or alarm information occurs, it is determined that the power battery is in an abnormal state and has a thermal runaway risk.

[0212] In a preferred embodiment, the above state information further includes environmental information of an environment where the power battery is located, and step S103 further includes:

[0213] Based on the environmental information, it is determined whether the environment where the power battery is located is in a normal state; when the environment is in an abnormal state, it is determined that the power battery is in a thermal runaway state. Specifically, the environmental information can include a smoke concentration and / or an environmental temperature near the power battery. After obtaining the environmental information, it is determined whether the power battery is in a normal state based on the environmental information, that is, whether the smoke concentration or the environmental temperature exceeds a safety threshold. When at least one of the smoke concentration and the environmental temperature exceeds the safety threshold, it is determined that the power battery is in an abnormal state, and the power battery is in a thermal runaway state; otherwise, when the above smoke concentration and environmental temperature do not exceed the safety threshold, it is determined that the power battery is in a normal state.

[0214] In a preferred embodiment, the vehicle presence information is image information of a parking platform, and step S107 further includes:

[0215] Based on the image information, it is identified whether the image information includes a mark for indicating the vehicle to be replaced. When the image information includes the mark, it is determined that the vehicle is parked on the parking platform. Specifically, an image acquisition device is arranged below the parking platform, such as an industrial camera or a binocular camera, which can acquire image information of the parking platform, and then determine whether the parking platform has a vehicle based on the image information. The mark can be arranged on the chassis of the vehicle, and preferably, the mark can be a visual positioning hole arranged on the longitudinal beam at the bottom of the vehicle, which is used to position the vehicle during battery replacement. The industrial camera or binocular camera captures an image containing the parking platform, and analyzes whether the image includes the mark to determine whether a vehicle is parked on the parking platform. When it is analyzed that the image includes the mark, it is determined that the vehicle is parked on the parking platform. Otherwise, when the image analysis result indicates that the image does not include the mark, it is determined that the parking platform does not park the vehicle.

[0216] In a preferred embodiment, the step of "transferring the power battery to the battery lifting device" in the step S109 further includes:

[0217] The battery compartment transfers the power battery to the battery lifting device, and the battery lifting device moves to a preset height. Specifically, a conveying mechanism is arranged on the compartment of the battery compartment, which can convey the power battery to the bearing table of the battery lifting device. After the battery compartment transfers the power battery to the bearing table of the battery lifting device, the battery lifting device rises / descends to move the power battery to a preset height. The preset height is determined based on the arrangement position of the first spray pipe and the first nozzle in the fire extinguishing system, and when the power battery is moved to the preset height, the spraying effect of the first spray pipe and the first nozzle is better.

[0218] In a preferred embodiment, the step of "transferring the power battery to the parking platform" in the step S111 further includes:

[0219] The battery compartment transfers the power battery to the battery lifting device, and the battery lifting device transfers the power battery to the battery translation device, and the battery translation device moves to the parking platform. Specifically, the conveying mechanism arranged on the compartment of the battery compartment first conveys the power battery to the bearing table of the battery lifting device, then the battery lifting device descends to the position of the battery translation device, and conveys the power battery to the battery translation device, and finally the battery translation device conveys the battery to the parking platform and continuously keeps on the parking platform.

[0220] In a preferred embodiment, the fire extinguishing system further includes an alarm subsystem, and the fire extinguishing method further includes:

[0221] When the power battery has a risk of thermal runaway or is in a thermal runaway state, the control alarm subsystem sends an alarm. Specifically, the alarm subsystem can be an alarm device capable of sending an audible / alarm light, such as a buzzer or an audible and light alarm, which is connected to the control subsystem, such as by wired connection through a signal line, a control bus, or by wireless communication. Whether the parking platform is parked with a vehicle or not, when the power battery is in a thermal runaway state or has a risk of thermal runaway, the control alarm subsystem sends an audible / alight alarm to timely remind all relevant personnel to evacuate.

[0222] In a preferred embodiment, the fire extinguishing system further comprises a process monitoring subsystem configured to obtain process state information of the power battery having a risk of thermal runaway or being in a thermal runaway state when the power battery is being handled by the fire extinguishing system, and the fire extinguishing method further comprises:

[0223] When the first on-off valve or the second on-off valve is opened, the process state information of the power battery being handled by the fire extinguishing system is obtained; based on the process state information, it is determined whether the power battery is in a controllable state; and when the power battery is in the controllable state, the first on-off valve or the second on-off valve is controlled to be closed. Specifically, the process monitoring information is video information or image information of the power battery, and the process monitoring subsystem comprises a first video acquisition device and a second video acquisition device. The first video acquisition device can be a camera or a video camera, which is arranged at the top of the battery lifting device and used to acquire video information or image information of the power battery on the battery lifting device. For example, the first video acquisition device is fixedly arranged on the top crossbeam of the battery lifting device, and the lens thereof faces the bearing table of the battery lifting device, so as to obtain a complete power battery during the fire handling process. The second video acquisition device can also be a camera or a video camera, which is arranged near the parking platform and used to acquire video information or image information of the power battery on the parking platform. For example, the second video acquisition device is arranged at a corner of the battery replacement cabin above the parking platform, and the lens thereof faces the parking platform, so as to obtain a complete power battery during the fire handling process.

[0224] In this application, the controllable state refers to a state in which the power battery has no open flame and smoke. During the fire handling process, the control subsystem controls the first video acquisition device or the second video acquisition device to shoot the video or image of the power battery. After capturing the video or image, it is determined whether the power battery has an open flame and / or smoke through image analysis technology. When the open flame and / or smoke are identified, it proves that the fire extinguishing effect is poor, and further measures need to be taken to dispose the power battery. If it is analyzed that the power battery has no open flame and smoke, it proves that the power battery has already been in a controllable state, and at this time the control subsystem can control the fire extinguishing device to stop the fire handling process.

[0225] The above embodiment has the advantages that: by jointly determining the fire-fighting mode based on the state information of the battery and the information whether the vehicle is present, the application can realize active fire-fighting, real-time response, improve the fire-fighting effect, and eliminate fire-fighting hidden dangers. By using the image acquisition device below the parking platform to acquire image information and analyze whether the image includes the mark at the bottom of the vehicle to determine whether the parking platform has a vehicle, the fire-fighting processing mode can be determined in time when the power battery is in thermal runaway or has a risk of thermal runaway, and no additional separate mark needs to be opened. By acquiring the video or image of the power battery during the fire-fighting process and determining whether the power battery is in a controllable state, the application can also effectively determine the fire-fighting effect, stop the fire-fighting device from processing the power battery when the power battery is in a controllable state, and save fire-fighting resources.

[0226] Reference will now be made to Figure 6 A possible control process of the application is described.

[0227] As Figure 6 shown, in a possible control process, the fire-fighting method of the application includes:

[0228] S301, acquiring the internal temperature of the battery, and performing step S307;

[0229] S303, acquiring the ambient temperature near the battery, and performing step S309;

[0230] S305, acquiring the smoke concentration near the battery, and performing step S311;

[0231] S307, determining whether the internal temperature of the battery is greater than the internal temperature threshold, if yes, performing step S313, otherwise returning to re-perform step S301;

[0232] S309, determining whether the ambient temperature near the battery is greater than the ambient temperature threshold, if yes, performing step S313, otherwise returning to re-perform step S303;

[0233] S311, determining whether the smoke concentration near the battery is greater than the concentration threshold, if yes, performing step S313, otherwise returning to re-perform step S305;

[0234] S313, locking the position of the risk battery according to the BMS number of the power battery, the temperature detector position code, the smoke detector position code, and the like involved in the above determination process, and then performing step S315;

[0235] S315, determining whether the parking platform has a parked vehicle according to the image of the parking platform acquired by the image acquisition device, if the parking platform has a parked vehicle, performing step S317, otherwise, performing step S325;

[0236] S317, the risk battery is transported to the battery lifting device, and step S319 is performed;

[0237] S319, the first on-off valve is opened, the water pump is controlled to start, the power battery is sprayed with fire-fighting water using the first fire-fighting channel, and then step S321 is performed;

[0238] S321, the video of the power battery is acquired by the first video acquisition device, and whether the power battery is free of open fire and smoke is judged based on the video; if yes, step S323 is performed; otherwise, step S319 is continuously performed;

[0239] S323, the first on-off valve and the water pump are closed, and the fire-fighting is ended;

[0240] S325, the risk battery is transported to the parking platform, and step S327 is performed;

[0241] S327, the second on-off valve is opened, the water pump is controlled to start, the power battery is sprayed with fire-fighting water using the second fire-fighting channel, and then step S329 is performed;

[0242] S329, the video of the power battery is acquired by the second video acquisition device, and whether the power battery is free of open fire and smoke is judged based on the video; if yes, step S331 is performed; otherwise, step S327 is continuously performed;

[0243] S331, the first on-off valve and the water pump are closed, and the fire-fighting is ended.

[0244] It should be noted that, in the above embodiments, each step is described in the above sequence, but those skilled in the art can understand that, in order to achieve the effect of the embodiments, different steps do not have to be executed in this order, and they can be executed simultaneously (in parallel) or in a reversed order, and these simple changes are within the protection scope of the present application. For example, there is no specific order between step S101 and step S105, and they can be executed simultaneously, or step S105 can be executed first, and then step S101.

[0245] So far, the technical solution of the present application has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to related technical features without departing from the principles of the present application, and the technical solutions after these changes or replacements will fall within the protection scope of the present application.

Claims

1. A fire extinguishing method for a charging and swapping station, characterized in that, The charging and battery swapping station comprises The charging and battery swapping station further comprises a fire-fighting device, the fire-fighting device comprises a first fire-fighting pipeline and a second fire-fighting pipeline, a first end of the first fire-fighting pipeline is communicated with a fire-fighting water source through a first on-off valve, and a first spraying part is arranged at a second end of the first fire-fighting pipeline, the first spraying part is arranged towards the battery lifting device, a first end of the second fire-fighting pipeline is communicated with the fire-fighting water source through a second on-off valve, and a second spraying part is arranged at a second end of the second fire-fighting pipeline, the second spraying part is arranged towards the parking platform; the fire-fighting method comprises: obtaining state information of the power battery; judging whether the power battery has a risk of thermal runaway or is in a thermal runaway state based on the state information; obtaining vehicle presence information of the parking platform; judging whether a vehicle is parked on the parking platform based on the vehicle presence information; when the power battery has a risk of thermal runaway or is in a thermal runaway state and a vehicle is parked on the parking platform, transferring the power battery to the battery lifting device and controlling the first on-off valve to be opened; when the power battery has a risk of thermal runaway or is in a thermal runaway state and no vehicle is parked on the parking platform, transferring the power battery to the parking platform and controlling the second on-off valve to be opened. The state information comprises internal state information of the power battery, and the step of "judging whether the power battery has a risk of thermal runaway or is in a thermal runaway state based on the state information" further comprises: 2.The fire extinguishing method for a charging and swapping station according to claim 1, wherein, judging whether the power battery is in a normal state based on the internal state information; when the power battery is in an abnormal state, determining that the power battery has a risk of thermal runaway. The state information further comprises environmental information of an environment where the power battery is located, and the step of "judging whether the power battery has a risk of thermal runaway or is in a thermal runaway state based on the state information" further comprises: 3.The fire extinguishing method for a charging or swapping station according to claim 1, wherein, judging whether the environment where the power battery is located is in a normal state based on the environmental information; when the environment is in an abnormal state, determining that the power battery is in a thermal runaway state. The vehicle presence information is image information of the parking platform, and the step of "judging whether a vehicle is parked on the parking platform based on the vehicle presence information" further comprises: 4.The fire extinguishing method for a charging or swapping station according to claim 1, wherein, based on the image information, identifying whether a mark for indicating a vehicle to be replaced with a battery is included in the image information; when the mark is included in the image information, determining that a vehicle is parked on the parking platform. The step of "transferring the power battery to the battery lifting device" further comprises: 5.The fire extinguishing method for a charging or swapping station according to claim 1, wherein, controlling the battery compartment to transfer the power battery to the battery lifting device; ​ Controlling the battery lifting device to move to a preset height. 6.The fire extinguishing method for a charging or swapping station according to claim 1, wherein, The step of "transferring the power battery to the parking platform" further comprises: Controlling the battery compartment to transfer the power battery to the battery lifting device; Controlling the battery lifting device to transfer the power battery to the battery translation device; Controlling the battery translation device to move to the parking platform. 7.The fire extinguishing method for a charging or swapping station according to claim 1, wherein, The fire-fighting method further comprises: When the power battery has a risk of thermal runaway or is in a thermal runaway state, issuing an alarm. 8.The fire extinguishing method for a charging or swapping station according to claim 1, wherein, The fire-fighting method further comprises: When the first on-off valve or the second on-off valve is open, acquiring process state information of the power battery when it is being fire-fought; Based on the process state information, determining whether the power battery is in a controllable state; When the power battery is in a controllable state, controlling the first on-off valve or the second on-off valve to close. 9.The fire extinguishing method for a charging or swapping station according to claim 1, wherein, The first spraying part comprises a plurality of first spraying pipes in communication with the second end of the first fire-fighting pipeline, and the plurality of first spraying pipes are located above the battery lifting device, and a plurality of first spraying holes are formed on each of the first spraying pipes. 10.The fire extinguishing method for a charging or swapping station according to claim 1, wherein, The first spraying part comprises a plurality of drainage pipes in communication with the second end of the first fire-fighting pipeline, and the plurality of drainage pipes are arranged in the circumferential direction of the battery lifting device, and each of the drainage pipes is provided with a first nozzle facing the battery lifting device. 11.The fire extinguishing method for a charging or swapping station according to claim 1, wherein, The fire-fighting device further comprises a cooling pipe in communication with the second end of the first fire-fighting pipeline, and the cooling pipe is located above the battery compartment, and the cooling pipe is provided with a cooling spraying head. 12.The fire extinguishing method for a charging or swapping station according to claim 1, wherein, The fire-fighting device further comprises a third fire-fighting pipeline, the first end of the third fire-fighting pipeline is in communication with a fire-fighting water source through a third on-off valve, and the second end of the third fire-fighting pipeline is provided with a plurality of second spraying pipes, each of the second spraying pipes extends to one of the battery compartments, and each of the second spraying pipes is provided with a second spraying hole. 13.The fire extinguishing method for a charging or swapping station according to claim 1, wherein, The second spraying part comprises a plurality of second nozzles in communication with the second end of the second fire-fighting pipeline, and each of the second nozzles is arranged to face the parking platform. 14.The fire extinguishing method for a charging or swapping station according to claim 13, wherein, A partition plate is arranged between the parking platform and the battery compartment, and the second nozzles are located on the side of the partition plate close to the battery compartment. 15.The fire extinguishing method for a charging or swapping station according to claim 1, wherein, The fire-fighting device further comprises a water pump, the inlet of the water pump is in communication with the fire-fighting water source, and the outlet of the water pump is in communication with the first fire-fighting pipeline and the second fire-fighting pipeline. 16.The fire extinguishing method for a charging or swapping station according to claim 15, wherein, The fire-fighting device comprises a plurality of water pumps, and the plurality of water pumps are connected in parallel through pipelines.

17. A fire extinguishing system for a charging and swapping station, characterized in that, The fire-fighting system comprises: A control subsystem connected with the fire-fighting device, the control subsystem is configured to transfer a power battery having a risk of thermal runaway or being in a thermal runaway state to the battery lifting device or the parking platform, and control the fire-fighting device to fire-fight the power battery on the battery lifting device or the power battery on the parking platform. 18.The fire extinguishing system for the charging and swapping station according to claim 17, characterized in that, The fire-fighting system further comprises: a battery monitoring subsystem connected with the control subsystem, the battery monitoring subsystem being configured to acquire state information of the power battery, determine whether the power battery has a risk of thermal runaway or is in a thermal runaway state based on the state information, and send an alarm signal when the power battery has a risk of thermal runaway or is in a thermal runaway state, the control subsystem is further configured to transport the power battery having a risk of thermal runaway or being in a thermal runaway state to the battery lifting device or the parking platform based on the alarm signal. 19.The fire extinguishing system for the charging and swapping station according to claim 18, characterized in that, The state information includes internal state information of the power battery, and the battery monitoring subsystem includes a battery data monitoring unit and a monitoring alarm unit connected with each other, the battery data monitoring unit being configured to acquire the internal state information, 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 being configured to acquire the internal state information, determine whether the power battery has a risk of thermal runaway based on the internal state information, and send the alarm signal when the power battery has a risk of thermal runaway. 20.The fire extinguishing system for the charging and swapping station according to claim 19, characterized in that, The internal state information includes one or more of a remaining capacity value, a cell voltage, a cell temperature, a temperature rise rate, a cell pressure difference, and alarm information. 21.The fire extinguishing system for the charging and swapping station according to claim 19, characterized in that, The state information includes environmental information of an environment in which the power battery is located, and the battery monitoring subsystem further includes an environmental monitoring unit connected with the monitoring alarm unit, the environmental monitoring unit being configured to collect the environmental information, determine whether the power battery is in a thermal runaway state based on the environmental information, and send a thermal runaway signal to the monitoring alarm unit when the power battery is in a thermal runaway state; the monitoring alarm unit is further configured to acquire the thermal runaway signal and send the alarm signal based on the thermal runaway signal. 22.The fire extinguishing system for the charging and swapping station according to claim 21, characterized in that, The environmental information includes a smoke concentration and / or an environmental temperature. 23.The fire extinguishing system for the charging and swapping station according to claim 17, characterized in that, The fire-fighting system further includes: a vehicle monitoring subsystem connected with the control subsystem, the vehicle monitoring subsystem being configured to acquire vehicle presence information of the parking platform, the control subsystem is further configured to determine whether the parking platform has a vehicle based on the vehicle presence information. 24.The fire extinguishing system for the charging and swapping station according to claim 23, characterized in that, The vehicle presence information is image information of the parking platform, and the vehicle monitoring subsystem includes an image collection device arranged below the parking platform, the image collection device being capable of collecting the image information, and the control subsystem being capable of determining whether the parking platform has a vehicle based on the image information. 25.The fire extinguishing system for the charging and swapping station according to claim 17, characterized in that, The fire-fighting system further includes: a battery transportation subsystem connected with the control subsystem, the battery transportation subsystem including the battery lifting device and the battery translation device, the control subsystem is further configured to control the battery transportation subsystem to act to transport the power battery having a risk of thermal runaway or being in a thermal runaway state to the battery lifting device or the parking platform. 26.The fire extinguishing system for the charging and swapping station according to claim 17, characterized in that, The fire-fighting system further comprises an alarm subsystem connected with the control subsystem, and the control subsystem is further configured to control the alarm subsystem to send an alarm. 27.The fire extinguishing system for the charging and swapping station according to claim 17, characterized in that, The fire-fighting system further comprises a process monitoring subsystem connected with the control subsystem, and the process monitoring subsystem is configured to acquire process state information of a power battery with a risk of thermal runaway or in a thermal runaway state when the power battery is subjected to fire-fighting treatment, The control subsystem is further configured to control the fire-fighting device to stop fire-fighting treatment of the power battery on the battery lifting device or the power battery on the parking platform based on the process state information. 28.The fire extinguishing system for the charging and swapping station according to claim 27, characterized in that, The process monitoring information is video information or image information of the power battery, and the process monitoring subsystem comprises a first video acquisition device and a second video acquisition device, the first video acquisition device is arranged on the top of the battery lifting device and is used to acquire video information or image information of the power battery on the battery lifting device; The second video acquisition device is arranged near the parking platform and is used to acquire video information or image information of the power battery on the parking platform.

29. A charging station, comprising: The charging and battery swapping station comprises the fire-fighting system according to any one of claims 17 to 28.

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