CN113117275A

CN113117275A - Fire fighting device and system for charging and replacing power station, charging and replacing power station and fire fighting method

Info

Publication number: CN113117275A
Application number: CN202110401579.2A
Authority: CN
Inventors: 曹佳; 夏丽建; 李永杰; 黄思传; 蒋舒
Original assignee: Weilai Automobile Technology Anhui Co Ltd
Current assignee: Weilai Automobile Technology Anhui Co Ltd
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2021-07-16

Abstract

The invention relates to the technical field of fire fighting, in particular to a fire fighting device and system for a charging and replacing power station, the charging and replacing power station and a fire fighting method. The application aims at solving the problems that the existing fire fighting system of the charging and replacing station is poor in effect and large in hidden danger. Mesh for this purpose, the fire control unit of this application includes first fire control pipeline and second fire control pipeline, and the first end of first fire control pipeline is through first on-off valve and fire control water source intercommunication, and the second end is provided with first portion of spraying, and first portion of spraying sets up towards battery hoisting device, and the first end of second fire control pipeline is through second on-off valve and fire control water source intercommunication, and the second end is provided with the second portion of spraying, and the second portion of spraying sets up towards parking platform. This application can promote to fill when trading the fire control effect of power station, eliminates conflagration hidden danger.

Description

Fire fighting device and system for charging and replacing power station, charging and replacing power station and fire fighting method

Technical Field

The invention relates to the technical field of fire fighting, in particular to a fire fighting device and system for a charging and replacing power station, the charging and replacing power station and a fire fighting method.

Background

Charging and replacing power stations are a fast energy supplementing method, and are currently incorporated into development plans by more and more vehicle factories. Usually, a parking platform and a battery compartment are arranged in the charging and replacing station, the parking platform is used for a vehicle to be replaced to replace batteries, and the battery compartment stores a plurality of power batteries. Because the thermal runaway may be caused by factors such as instability of the battery in the charging process or the battery, a fire protection system in the charging and replacing power station is indispensable.

The traditional fire-fighting scheme for the battery of the charging and replacing station is as follows: (1) arranging a fire fighting device at each bin position of the battery bin; (2) a fire protection device is arranged above the parking platform. In the first scheme, when a thermal runaway battery is monitored, the fire fighting device is directly started to carry out fire fighting on the whole battery compartment. In the scheme in the second, transport parking platform with thermal runaway battery through transport mechanism, carry out the fire control to the battery package through fire control unit.

The drawbacks of the above-mentioned conventional fire fighting solutions are evident: firstly, battery position in storehouse space, highly limited, arrange fire control unit in every position in storehouse, every position in storehouse all need consume the rivers, lead to the rivers dispersion, and the thermal runaway battery can't be effectively cooled down, and its fire control effect is difficult as people's will, has the unable possibility of effective fire control of thermal runaway battery, and needs every layer of battery storehouse to all arrange the fire control spray piping, not only need occupy battery storehouse high space, has still increased material cost and assembly man-hour. Secondly, arrange the fire control unit in parking platform top and although can reduce material cost, improve the fire control effect, when having the vehicle to trade the electricity on the parking platform, the battery must not transport to trade the electricity platform, and the battery of thermal runaway can only be in the battery compartment like this, does not have the effect to keep apart between thermal runaway battery and other safety battery, exists and forms bigger conflagration hidden danger.

Accordingly, there is a need in the art for a new solution to the above problems.

Disclosure of Invention

In order to solve at least one of the above problems in the prior art, namely to solve the problems of poor effect and large hidden danger of the existing fire fighting system of the charging and replacing station, a first aspect of the present application provides a fire fighting device for the charging and replacing station, the charging and replacing station comprises a box body, and a parking platform, a battery compartment, a battery lifting device and a battery translation device which are arranged in the box body, the parking platform is arranged to be capable of carrying an electric vehicle to be replaced, the battery compartment is arranged to be capable of storing a power battery, the battery lifting device is arranged to be capable of rotating the power battery between the battery compartment and the battery translation device, the battery translation device is arranged to be capable of rotating the power battery between the battery lifting device and the parking platform, 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, the second end is provided with first portion of spraying, first portion of spraying orientation battery hoisting device sets up, the first end of second fire control pipeline is through second on-off valve and fire control water source intercommunication, and the second end is provided with the second portion of spraying, the second portion of spraying orientation parking platform sets up.

In the above preferred technical scheme of the fire fighting device for the charging and replacing station, the first spraying part includes a plurality of first spraying pipes communicated with the second end of the first fire fighting pipeline, the plurality of first spraying pipes are located above the battery lifting device, and each first spraying pipe is provided with a plurality of first spraying holes.

In the above preferred technical scheme of the fire fighting device for the charging and replacing station, the first spraying part includes a plurality of drainage tubes communicated with the second end of the first fire fighting pipeline, the plurality of drainage tubes are arranged around the circumference of the battery lifting device, and each drainage tube is provided with a first nozzle facing the battery lifting device.

In the above preferred technical scheme of a fire control unit for charging and replacing power station, the fire control unit still include with the cooling pipe of the second end intercommunication of first fire control pipeline, the cooling pipe is located the top of battery compartment, be provided with the cooling shower head on the cooling pipe.

In the above preferred technical scheme of the fire fighting device for the charging and replacing station, the fire fighting device further comprises a third fire-fighting pipeline, a first end of the third fire-fighting pipeline is communicated with a fire-fighting water source through a third on-off valve, a second end of the third fire-fighting pipeline is provided with a plurality of second spray pipes, each second spray pipe extends to one bin position of the battery bin, and each second spray pipe is provided with a second spray hole.

In an optimal technical solution of the fire fighting device for the charging and replacing station, the second spraying part includes a plurality of second nozzles communicated with the second end of the second fire fighting pipeline, and each of the second nozzles is disposed toward the parking platform.

In the preferable technical scheme of the fire fighting device for the charging and replacing station, a partition plate is arranged between the parking platform and the battery compartment, and the second nozzle is positioned on one side of the partition plate close to the battery compartment.

In the above preferred technical scheme of the fire fighting device for the charging and replacing 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 simultaneously.

In the above preferred technical scheme of the fire fighting device for the charging and replacing power station, the fire fighting device includes a plurality of the water pumps, and the plurality of the water pumps are connected in parallel through a pipeline.

A second aspect of the present application provides a fire protection system for a charging and replacement power station, the fire protection system comprising: the fire fighting device is the fire fighting device in any one of the preferred technical schemes; the control subsystem is connected with the fire fighting device and is configured to be capable of transferring a power battery with a thermal runaway risk or in a thermal runaway state to the battery lifting device or the parking platform and controlling the fire fighting device to carry out fire fighting treatment on the power battery on the battery lifting device or the power battery on the parking platform.

In an preferable technical solution of the fire fighting system for the charging and replacing power station, the fire fighting system further includes: the battery monitoring subsystem is connected with the control subsystem, the battery monitoring subsystem is set to acquire the state information of the power battery, judges whether the power battery has a thermal runaway risk or is in a thermal runaway state or not based on the state information, and sends out an alarm signal when the power battery has the thermal runaway risk or is in the thermal runaway state, and the control subsystem is also set to transfer the power battery with the thermal runaway risk or in the thermal runaway state to the battery lifting device or the parking platform based on the alarm signal.

In the above preferred technical solution of the fire fighting system for a charging and replacing station, the state information includes internal state information of the power battery, the battery monitoring subsystem includes a battery data monitoring unit and a monitoring alarm unit that are connected to each other, the battery data monitoring unit is configured to be able 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 is arranged to acquire the internal state information, judge whether the power battery has a thermal runaway risk based on the internal state information, and send the alarm signal when the power battery has the thermal runaway risk.

In the above preferred technical scheme of the fire protection system for the charging and replacing station, the internal state information includes one or more of a remaining electric quantity value, a cell voltage, a cell temperature, a temperature rise rate, a cell pressure difference, and alarm information.

In the above preferred technical solution of the fire fighting system for a charging and replacing station, the 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 alarm unit, and the environmental monitoring unit is configured to be capable of acquiring the environmental information, determining whether the power battery is in a thermal runaway state based on the environmental information, and sending a thermal runaway signal to the monitoring alarm unit when the power battery is in the thermal runaway state; the monitoring alarm unit is further configured to acquire the thermal runaway signal and send out the alarm signal based on the thermal runaway signal.

In a preferred technical solution of the fire fighting system for the charging and replacing station, the environmental information includes smoke concentration and/or ambient temperature.

In an preferable technical solution of the fire fighting system for the charging and replacing power station, the fire fighting system further includes: a vehicle monitoring subsystem coupled to the control subsystem, the vehicle monitoring subsystem configured to obtain vehicle presence information for the parking platform, the control subsystem further configured to determine the presence of a vehicle for the parking platform based on the vehicle presence information.

In the above preferred technical solution of the fire fighting system for the charging and replacing station, the vehicle presence/absence information is image information of the parking platform, the vehicle monitoring subsystem includes an image acquisition device disposed below the parking platform, the image acquisition device can acquire the image information, and the control subsystem can determine, based on the image information, whether the vehicle is present on the parking platform.

In an preferable technical solution of the fire fighting system for the charging and replacing power station, the fire fighting system further includes: a battery transport subsystem connected with the control subsystem, the battery transport subsystem including the battery lifting device and the battery translation device, the control subsystem further configured to be able to control the battery transport subsystem action to transport a power battery having a thermal runaway risk or in a thermal runaway state to the battery lifting device or the parking platform.

In the above preferred technical solution of the fire fighting system for the charging and replacing station, the fire fighting system further includes an alarm subsystem, the alarm subsystem is connected with the control subsystem, and the control subsystem is further configured to control the alarm subsystem to give an alarm.

In the above preferred technical solution of the fire protection system for a charging and replacing station, the fire protection system further includes a process monitoring subsystem, the process monitoring subsystem is connected to the control subsystem, the process monitoring subsystem is configured to obtain process state information when a power battery having a thermal runaway risk or being in a thermal runaway state is subjected to fire protection 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 lift or the power battery on the parking platform based on the process status information.

In the above preferred technical solution of the fire fighting system for the charging and replacing station, 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 is disposed at the top of the battery lifting device and is used for acquiring the 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 used for acquiring video information or image information of the power battery on the parking platform.

A third aspect of the present application provides a charging and replacing power station, which includes the fire fighting apparatus according to any one of the above preferred technical solutions or the fire fighting system according to any one of the above preferred technical solutions.

A fourth aspect of the present application provides a fire fighting method for a charging and replacing power station, where the charging and replacing power station includes a fire fighting device, and the fire fighting device is the fire fighting device in any one of the above preferred technical solutions;

the fire fighting method comprises the following steps:

acquiring state information of a power battery;

judging whether the power battery has a thermal runaway risk or is in a thermal runaway state or not based on the state information;

acquiring vehicle existence information of the parking platform;

judging whether a vehicle is parked on the parking platform or not based on the information of whether the vehicle exists or not;

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, the power battery is transported to the battery lifting device, and the first on-off valve is controlled to be opened;

when the power battery has a thermal runaway risk or is in a thermal runaway state and a vehicle is not parked on the parking platform, the power battery is transferred to the parking platform, and the second on-off valve is controlled to be opened.

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

judging whether the power battery is in a normal state or not based on the internal state information;

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

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

judging whether the environment where the power battery is located is in a normal state or not based on the environment information;

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

In a preferred technical solution of the fire fighting method for the charging and replacing station, the vehicle presence/absence 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/absence information further includes:

identifying whether a mark for representing a battery replacement vehicle is included in the image information or not based on the image information;

when the image information includes the mark, it is determined that a vehicle is parked on the parking platform

In a preferred embodiment of the fire fighting method for the charging and replacing station, the step of "transferring the power battery to the battery lifting device" further includes:

controlling the battery bin to transfer the power battery to the battery lifting device;

and controlling the battery lifting device to move to a preset height.

In a preferred technical solution of the fire fighting method for the charging and replacing station, the step of "transferring the power battery to the parking platform" further includes:

controlling the battery lifting device to transfer the power battery to the battery translation device;

and controlling the battery translation device to move to the parking platform.

In a preferred technical solution of the fire fighting method for the charging and replacing power station, the fire fighting method further includes:

and when the power battery has a thermal runaway risk or is in a thermal runaway state, giving an alarm.

acquiring process state information of a power battery when the power battery is subjected to fire fighting treatment under the condition that the first on-off valve or the second on-off valve is opened;

judging whether the power battery is in a controllable state or not based on the process state information;

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

In the technical scheme of this application, through setting up first fire control pipeline and second fire control pipeline, the first portion that sprays on the first fire control pipeline sets up towards battery hoisting device, and the second portion that sprays on the second fire control pipeline sets up towards parking platform, can promote the fire control effect of filling and trading the power station, eliminate the conflagration hidden danger. Specifically, when the power battery is in thermal runaway or has a thermal runaway risk, a specific fire protection mode can be determined by judging whether the parking platform is parked with a vehicle: when parking platform parks the vehicle, will have the thermal runaway risk or be in thermal runaway's power battery operation to battery hoisting device, adopt first fire control pipeline to carry out the fire control to power battery and handle, because battery hoisting device is sufficient for battery compartment space and can carry out abundant effectual centralized fire control to target power battery and handle, consequently this kind of fire control mode not only need not occupy the high space in battery compartment, can also improve the fire control effect. When parking platform did not park the vehicle, will have thermal runaway risk or be in thermal runaway's power battery operation to parking platform, the second fire control pipeline of adoption carries out the fire control to power battery and handles, effectively keeps apart risk battery and other safety battery, improves fire control safety.

Further, through setting up first shower in battery hoisting device's top for when carrying out the fire control to power battery, can directly spray the cooling through first shower to power battery, improve the validity of fire control.

Further, through arranging a plurality of first nozzles in battery hoisting device's circumference, when carrying out the fire control to power battery, can carry out accurate jet cooling, the ageing of improvement fire control to power battery through the nozzle.

Further, through set up cooling tube and cooling shower head above the battery compartment, when the fire control to power battery, can utilize the cooling shower head to cool down to the environment in battery compartment, effectively reduce the temperature in the battery compartment, reduce the damage risk of other safety battery and interior spare part in the storehouse.

Further, through set up the second nozzle towards parking platform at second fire control pipeline, can be when carrying out the fire control to power battery, through the accurate power battery who sprays at parking platform of second nozzle, improve the fire control effect.

Further, the second nozzle is arranged on one side, close to the battery compartment, of the partition board, so that the second nozzle is not exposed in the space where the parking platform is located, the interior trim smoothness of the parking platform is not affected, and the space where the parking platform is located is not occupied.

Through providing a fire extinguishing system for the power station that trades that fills of this application has realized initiative fire control, has expanded fire control unit's suitability, has satisfied the fire control demand that unmanned on duty fills the power station that trades.

Through providing a fire control method for the charging and replacing power station of this application can be when the battery possesses the thermal runaway risk or the thermal runaway appears through judging that parking platform has or not have the vehicle and in time make a decision to the fire control mode, when guaranteeing the fire control promptness, improves fire control effect and fire control security.

Scheme 1, a fire fighting apparatus for a charging and replacing station, characterized in that the charging and replacing 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 capable of carrying a vehicle to be replaced, the battery compartment is arranged to be capable of storing a power battery, the battery lifting device is arranged to be capable of rotating the power battery between the battery compartment and the battery translation device, the battery translation device is arranged to be capable of rotating the power battery between the battery lifting device and the parking platform,

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

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 of the second fire-fighting pipeline is provided with a second spraying part which faces the parking platform.

Scheme 2, according to scheme 1 a fire control unit for filling trade power station, its characterized in that, first shower portion include with the second end of first fire control pipeline a plurality of first shower of intercommunication, a plurality of first shower are located battery hoisting device's top, every a plurality of first spraying hole has been seted up on the first shower.

Scheme 3, according to scheme 1 a fire control unit for charging and replacing power station, characterized in that, the first portion of spraying include with a plurality of drainage tubes of the second end intercommunication of first fire control pipeline, a plurality of drainage tubes surround the circumference setting of battery hoisting device, be provided with on every the drainage tube towards the first nozzle of battery hoisting device.

Scheme 4, according to scheme 1 a fire control unit for filling trade power station, its characterized in that, fire control unit still include with the cooling tube of the second end intercommunication of first fire control pipeline, the cooling tube is located the top of battery compartment, be provided with the cooling shower head on the cooling tube.

Scheme 5, according to scheme 1 a fire control unit for filling trade power station, its characterized in that, fire control unit still includes the third pipeline of preventing fire, the first end of third pipeline of preventing fire is through third on-off valve and fire control water source intercommunication, the second end of third pipeline of preventing fire is provided with a plurality of second shower, every the second shower extends to on a position of battery compartment, and every the second shower has been seted up the second and has sprayed the hole.

Scheme 6, according to scheme 1 for fill fire control unit of trade power station, characterized in that, the second portion of spraying include with the second end of second fire control pipeline a plurality of second nozzles intercommunication, every the second nozzle sets up towards the parking platform.

Scheme 7, according to scheme 6 a fire control unit for filling trade power station, its characterized in that, parking platform with be provided with the baffle between the battery compartment, the second nozzle is located the baffle is close to one side in the battery compartment.

Scheme 8, according to scheme 1 a fire control unit for filling trade power station, its characterized in that, the fire control unit still includes the water pump, the import of water pump with fire control water source intercommunication, the export of water pump simultaneously with first fire control pipeline with the second fire control pipeline intercommunication.

Scheme 9, according to scheme 8 a fire control unit for filling trade power station, its characterized in that, the fire control unit includes a plurality of the water pump, a plurality of pass through pipeline parallel connection between the water pump.

Scheme 10, a fire extinguishing system for filling trades power station, its characterized in that, fire extinguishing system includes:

a fire fighting device as described in any one of claims 1 to 9;

the control subsystem is connected with the fire fighting device and is configured to be capable of transferring a power battery with a thermal runaway risk or in a thermal runaway state to the battery lifting device or the parking platform and controlling the fire fighting device to carry out fire fighting treatment on the power battery on the battery lifting device or the power battery on the parking platform.

Scheme 11, according to scheme 10 a fire extinguishing system for filling trades power station, its characterized in that, the fire extinguishing system still includes:

a battery monitoring subsystem connected with the control subsystem, the battery monitoring subsystem configured to acquire status 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 status 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 enable transfer of a power battery at risk of thermal runaway or in a thermal runaway condition to the battery lift or the parking platform based on the warning signal.

Scheme 12 and the fire fighting system for a charging and replacing station according to scheme 11, wherein the state information includes internal state information of the power battery, the battery monitoring subsystem includes a battery data monitoring unit and a monitoring alarm unit that are connected to each other, the battery data monitoring unit is configured to be able 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 is arranged to acquire the internal state information, judge whether the power battery has a thermal runaway risk based on the internal state information, and send the alarm signal when the power battery has the thermal runaway risk.

Scheme 13 and the fire protection system for a charging and replacing power station according to scheme 12, wherein the internal state information includes one or more of a remaining electric quantity value, a cell voltage, a cell temperature, a temperature rise rate, a cell pressure difference, and alarm information.

The fire fighting system for the charging and replacing station according to the scheme 14 and 12 is characterized in that the state information includes environmental information of an environment where the power battery is located, the battery monitoring subsystem further includes an environmental monitoring unit connected with the monitoring alarm unit, and the environmental monitoring unit is configured to collect the environmental information, judge 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 the thermal runaway state;

the monitoring alarm unit is further configured to acquire the thermal runaway signal and send out the alarm signal based on the thermal runaway signal.

Scheme 15, the fire protection system for a charging and replacing power station according to scheme 14, wherein the environmental information includes smoke concentration and/or ambient temperature.

Scheme 16, according to scheme 10 a fire extinguishing system for charging station, characterized in that, the fire extinguishing system still includes:

a vehicle monitoring subsystem coupled to the control subsystem, the vehicle monitoring subsystem configured to obtain vehicle presence information for the parking platform,

the control subsystem is further configured to determine the presence of a vehicle at the parking platform based on the vehicle presence information.

Scheme 17, according to scheme 16, the fire protection system for a charging and replacing station is characterized in that the presence or absence of the vehicle 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 can acquire the image information, and the control subsystem can determine the presence or absence of the vehicle on the parking platform based on the image information.

Scheme 18, a fire extinguishing system for charging and replacing power station according to scheme 10, characterized in that, the fire extinguishing system still includes:

a battery transport subsystem connected with the control subsystem, the battery transport subsystem including the battery lifting device and the battery translation device,

the control subsystem is further configured to control the battery transport subsystem to operate to transport the power battery at risk of thermal runaway or in a thermal runaway condition to the battery lift or the parking platform.

Scheme 19, the fire protection system for a charging and replacing power station according to scheme 10, characterized in that, the fire protection system further includes an alarm subsystem, the alarm subsystem is connected with the control subsystem, the control subsystem is further configured to control the alarm subsystem to send out an alarm.

Scheme 20, the fire protection system for a charging and replacing station according to scheme 10, further comprising a process monitoring subsystem, the process monitoring subsystem is connected to the control subsystem, the process monitoring subsystem is configured to obtain process state information when a power battery having a thermal runaway risk or in a thermal runaway state is processed by fire protection,

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

Scheme 22 and a charging and replacing power station, wherein the charging and replacing power station comprises the fire fighting device according to any one of schemes 1 to 9 or the fire fighting system according to any one of schemes 10 to 21.

Scheme 23, a fire fighting method for a charging and replacing power station, characterized in that the charging and replacing power station comprises:

a fire fighting device as described in any one of claims 1 to 9; the fire fighting method comprises the following steps:

acquiring state information of a power battery;

acquiring vehicle existence information of the parking platform;

Scheme 24 and the fire fighting method for a charging and replacing station according to scheme 23, wherein the state information includes internal state information of the power battery, and the step of determining whether the power battery has a risk of thermal runaway or is in a thermal runaway state based on the state information further includes:

Scheme 25 and the fire fighting method for the charging and replacing station according to scheme 23 are characterized in that the state information further includes environment 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:

judging whether the environment where the power battery is located is in a normal state or not based on the environment information; and when the environment is in an abnormal state, determining that the power battery is in a thermal runaway state.

Scheme 26 and the fire fighting method for a charging and replacing station according to scheme 23, wherein the vehicle presence/absence 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/absence information further includes:

and when the image information comprises the mark, judging that a vehicle is parked on the parking platform.

Scheme 27, the fire fighting method for a charging and replacing station according to scheme 23, wherein the step of "transferring the power battery to the battery lifting device" further comprises:

and controlling the battery lifting device to move to a preset height.

Scheme 28 and the fire fighting method for the charging and replacing power station according to scheme 23, wherein the step of "transferring the power battery to the parking platform" further includes:

and controlling the battery translation device to move to the parking platform.

Scheme 29 and the fire fighting method for the charging and replacing power station according to scheme 23, wherein the fire fighting method further comprises:

Scheme 30, the fire fighting method for the charging and replacing power station according to scheme 23, characterized in that the fire fighting method further comprises:

Drawings

The fire fighting device, the fire fighting system, the fire fighting method and the fire fighting method for the charging and replacing power station of the application are described below with reference to the accompanying drawings. In the drawings:

fig. 1 is an exploded view of a charging and replacing station of the present invention without a fire fighting device;

fig. 2 is a partial structural view of the charging and swapping station of the present invention;

fig. 3 is a structural view of a fire fighting apparatus for a charging and replacing station of the present invention;

FIG. 4 is a system diagram of a fire protection system for a charging and replacement station of the present invention;

FIG. 5 is a flow chart of a fire fighting method for a charging and swapping station of the present invention;

fig. 6 is a logic diagram of a possible embodiment of the fire fighting method for the charging and replacing power station according to the present invention.

List of reference numerals

1. A box body; 2. a parking platform; 3. a battery compartment; 4. a battery lifting device; 5. a battery translation device; 6. a fire-fighting device; 61. a first fire conduit; 611. a first spraying part; 6111. a first shower pipe; 6112. a drainage tube; 6113. a first nozzle; 612. a cooling pipe; 613. a cooling spray header; 62. a second fire conduit; 621. a second spraying part; 6211. a second nozzle; 63. a water pump; 64. a water tank; 65. a first on-off valve; 66. a second on-off valve; 7. a separator.

Detailed Description

Preferred embodiments of the present application are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principles of the present application, and are not intended to limit the scope of protection of the present application. For example, although the following embodiments are described in conjunction with a container-type charging and replacing station, such application scenarios are not limiting, and a person skilled in the art may adjust the charging and replacing station as needed as long as the charging and replacing station has a battery compartment, a battery lifting device, a battery translation device, and a parking platform.

It should be noted that in the description of the present application, the terms of direction or positional relationship indicated by the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present application, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those skilled in the art as the case may be.

Example 1

Referring first to fig. 1 to 3, the fire fighting device of the present application will be described. Wherein, fig. 1 is an explosion diagram of the charging and replacing power station of the invention when no fire fighting device is arranged; fig. 2 is a partial structural view of the charging and swapping station of the present invention; fig. 3 is a structural view of the fire fighting device for a charging and replacing station of the present invention.

As shown in fig. 1 and fig. 2, the charging and replacing station of the present application includes a box 1, a parking platform 2 disposed in the box 1, a battery compartment 3, a battery lifting device 4, and a battery translation device 5, wherein the parking platform 2 is configured to be able to carry a vehicle to be replaced, the battery compartment 3 is configured to be able to store a power battery, the battery lifting device 4 is configured to be able to rotate the power battery between the battery compartment 3 and the battery translation device 5, and the battery translation device 5 is configured to be able to rotate the power battery between the battery lifting device 4 and the parking platform 2.

For example, a plurality of bin positions for storing power batteries are arranged in the battery bin 3, and when the power batteries are located at the bin positions, the battery bin 3 can supplement power for the power batteries. The parking platform 2 is used for parking the vehicle to be changed and positioning the vehicle to be changed, and when the vehicle to be changed is parked on the parking platform 2, the power battery of the vehicle to be changed can be changed from the lower part of the vehicle to be changed (the power battery is required to be arranged at the bottom of the vehicle). The battery lifting device 4 may be a lifter, and includes a bearing platform, a vertical lifting mechanism and a horizontal conveying mechanism, where the vertical lifting mechanism is used to lift or lower the power battery borne on the bearing platform to a preset height, and the horizontal conveying mechanism is used to convey the power battery to and receive the power battery from the bin when the power battery is lifted to the preset height, or convey the power battery to and receive the power battery conveyed by the battery translation device 5 when the power battery is lowered to the preset height. The battery translation device 5 can transfer the kinetic battery between the battery lifting device 4 and the parking platform 2, so as to transfer the undercharged battery from the vehicle to be changed to the battery lifting device 4 and transfer the fully charged battery from the battery lifting device 4 to the parking platform 2. The battery translation device 5 may be a conveyor belt or a battery replacement robot. When battery translation device 5 was the conveyer belt, can set up bearing device and add unlocking device in order to realize dismantling and the installation to power battery at parking platform 2, when battery translation device 5 was for trading electric robot, then can realize dismantling and installing power battery by the bearing device who sets up on trading electric robot and adding unlocking device. The specific structure and operation principle of each battery replacement device belong to the common knowledge in the field, and are not described herein again.

In this embodiment and the following embodiments, the power battery is transported to the parking platform 2, which means that the power battery arrives at and continues to be at the parking platform 2. If the conveyor belt bears and conveys the power battery to reach and continuously locate below the parking platform 2, if the battery replacing robot bears the power battery to reach and continuously locate at the parking platform 2, if the conveyor belt bears the power battery to reach the parking platform 2 and conveys the power battery to the supporting device, and the like.

Referring to fig. 2 and 3, for the effect that the current power station fire extinguishing system that charges exists of solving is not good enough, the problem that hidden danger is big, still set up fire control unit 6 in the power station that charges of this application, fire control unit 6 includes first fire control pipeline 61 and second fire control pipeline 62, the first end of first fire control pipeline 61 is through first on-off valve 65 and fire control water source intercommunication, the second end is provided with first shower portion 611, first shower portion 611 sets up towards battery hoisting device 4, second fire control pipeline 62's first end is through second on-off valve 66 and fire control water source intercommunication, the second end is provided with second shower portion 621, second shower portion 621 sets up towards parking platform 2.

When the power battery is in thermal runaway or has a thermal runaway risk, a specific fire protection mode can be determined by judging whether the parking platform 2 parks a vehicle: when parking platform 2 has parked the vehicle, will have the thermal runaway risk or be in the power battery operation of thermal runaway to battery hoisting device 4, adopt first fire control pipeline 61 to carry out the fire control to power battery and handle. When the parking platform 2 does not park the vehicle, the power battery with the thermal runaway risk or in the thermal runaway is operated to the parking platform 2, and the second fire-fighting pipeline 62 is adopted to carry out fire-fighting treatment on the power battery.

Through setting up first fire control pipeline 61 and second fire control pipeline 62, the first portion 611 that sprays on the first fire control pipeline 61 sets up towards battery hoisting device 4, and the second portion 621 that sprays on the second fire control pipeline 62 sets up towards parking platform 2, and the fire control unit 6 of this application can promote the fire control effect of filling and trading the power station, eliminate the conflagration hidden danger. Specifically, when the parking platform 2 is parked with a vehicle, the fire fighting process is performed by transferring the power battery to the battery lifting device 4 and using the first fire fighting pipe 61. Because battery hoisting device 4 is sufficient for battery compartment 3 space and can carry out abundant effectual centralized fire control to target power battery and handle, consequently this kind of fire control mode not only need not occupy the high space of battery compartment 3, can also improve the fire control effect. When parking platform 2 does not park the vehicle, through transporting power battery to parking platform 2 and adopting second fire control pipeline 62 to carry out the fire control and handle, can effectively keep apart risk battery and other safety batteries, improve the fire control security.

Referring now to fig. 2 and 3, a preferred embodiment of the fire fighting device of the present application will be described.

As shown in fig. 2 and 3, the fire fighting device 6 includes a first fire fighting pipe 61, a second fire fighting pipe 62, a water pump 63, a water tank 64, and the like. The water tank 64 may be disposed in the charging and replacing power station, or disposed outside the charging and replacing power station or at a distance from the charging and replacing power station, and the water tank 64 stores fire-fighting water. The water pumps 63 are arranged in two, the two water pumps 63 are connected in parallel, one water pump 63 is a main water pump, and the other water pump is a standby water pump. Wherein, the water inlets and the water outlets of the two water pumps 63 in the parallel connection are respectively communicated. The water inlet of the water pump 63 is communicated with the water tank 64, the first end of the first fire fighting pipeline 61 (i.e. the end of the first fire fighting pipeline 61 close to the water pump 63 in fig. 3) is provided with a first on-off valve 65, and the first fire fighting pipeline 61 is communicated with the water outlet of the water pump 63 through the first on-off valve 65. Similarly, a first end of the second fire fighting pipe 62 (i.e., an end of the second fire fighting pipe 62 close to the water pump 63 in fig. 3) is provided with a second cut-off valve 66, and the second fire fighting pipe 62 is communicated with a water outlet of the water pump 63 through the second cut-off valve 66.

A first spraying part 611 is arranged at a second end of the first fire fighting pipeline 61 (i.e., an end of the first fire fighting pipeline 61 far away from the water pump 63 in fig. 3), the first spraying part 611 includes 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 this application, first shower 6111 is provided with six, and every first shower 6111 extends along two opposite sides of the top of battery hoisting device 4 in the top of battery hoisting device 4. The bottom of the first spray pipe 6111 is provided with a plurality of first spray holes, the shape and number of the first spray holes are not particularly limited in this application, and a person skilled in the art can select the first spray holes based on a specific application scenario as long as the first spray pipe 6111 and the arrangement manner of the first spray holes can cover the upper surface of the housing of the power battery as much as possible.

The first spraying part 611 further includes a plurality of drainage tubes 6112 communicated with the second end of the first fire fighting pipeline 61, the plurality of drainage tubes 6112 are arranged around the circumference of the battery lifting device 4, and a first nozzle 6113 facing the battery lifting device 4 is arranged on each drainage tube 6112. In this application, draft tube 6112 is provided with four, four draft tubes 6112 around four vertical frames of battery hoisting device 4. Two first nozzles 6113 are arranged at the end of each draft tube 6112, and the two first nozzles 6113 on each draft tube 6112 are arranged towards the battery lifting device 4 in a group. The four sets of first nozzles 6113 are preferably arranged in a manner that they can cover the housing of the power battery when spraying the power battery, wherein the covered housing is at least the upper surface of the housing of the power battery.

The fire fighting device 6 further comprises a cooling pipe 612 communicated with the second end of the first fire fighting pipeline 61, the cooling pipe 612 is located above the battery compartment 3, and a cooling spray header 613 is arranged on the cooling pipe 612. In this application, battery compartment 3 is provided with two, and battery hoisting device 4 arranges into one row and battery hoisting device 4 is located between two battery compartments 3 with two battery compartments 3. The number of the cooling pipes 612 is two, a cooling spray header 613 is arranged at the end of each cooling pipe 612, and after the cooling spray headers 613 are arranged, each cooling spray header 613 is positioned above the top of one battery compartment 3. The cooling shower head 613 is disposed at a position that ensures that the spraying range can cover the entire battery compartment 3 therebelow as much as possible.

Referring to fig. 1 to 3, the second shower portion 621 includes a plurality of second nozzles 6211 communicating with a second end of the second fire-fighting piping 62 (i.e., an end of the second fire-fighting piping 62 away from the water pump 63 in fig. 3), each of the second nozzles 6211 being disposed toward the parking platform 2. Specifically, in the present application, the second end of the second fire-fighting piping 62 extends along the length direction of the parking platform 2 (i.e., the direction in which the vehicle enters and exits the parking platform 2), three second nozzles 6211 are provided, and the three second nozzles 6211 are arranged at the second end of the second fire-fighting piping 62 along the length direction of the parking platform 2. Each second nozzle 6211 is arranged facing the parking platform 2, and the three second nozzles 6211 are preferably oriented to cover the housing of the power battery when spraying it onto the power battery on the parking platform 2. Also, the housing covered is at least the upper surface of the housing of the power cell.

Further, a partition 7 is arranged between the parking platform 2 and the battery bin 3, the partition 7 divides the box body 1 into two bins, namely a charging bin and a battery changing bin, wherein the battery bin 3 and the battery lifting device 4 are located in the charging bin, the parking platform 2 is located in the battery changing bin, and the battery translation device 5 is partially located in the charging bin and partially located in the battery changing bin. Wherein, the second nozzle 6211 is located at one side of the partition 7 close to the battery compartment 3, and specifically, the second end of the second fire fighting pipeline 62 and the plurality of second nozzles 6211 arranged thereon are located at the charging compartment and extend to the position above the battery compartment 3 close to the partition 7. The bulkhead 7 is provided with a through hole or a slit which allows the fire water sprayed by the second nozzle 6211 to pass through and be accurately sprayed on the power battery on the parking platform 2.

When a certain power battery is out of control or is in the risk of out of control, whether the parking platform 2 parks the vehicle to perform corresponding fire control is judged: when a vehicle is parked on the parking platform 2, the battery lifting device 4 is controlled to bear the power battery thereon and lift the power battery to a preset height, then the main water pump is started, the first on-off valve 65 is opened, and if the main water pump fails, the standby water pump can be started. At this time, a plurality of first spraying pipes 6111 with holes at the bottom are arranged above the battery lifting device 4 to intensively spray water to the surface of the power battery for cooling, and 4 groups of first nozzles 6113 with adjusted angles arranged around the battery lifting device 4 spray water to the surface of the shell of the power battery. In addition, a cooling shower head 613 above each battery compartment 3 sprays the charging compartment to reduce the ambient temperature. When the vehicle is not parked on the parking platform 2, the battery lifting device 4 is controlled to take down the power battery and place the power battery on the battery translation device 5, 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 cut-off valve 66 is opened. At this point, three second nozzles 6211 on the second fire conduit 62 spray against the housing surface of the power battery.

The setting mode has the advantages that: through setting up first shower 6111 in battery hoisting device 4's top for when carrying out the fire control to power battery, can directly carry out centralized spraying cooling to power battery through first shower 6111, improve the validity of fire control. Through arranging a plurality of first nozzles 6113 in battery hoisting device 4's circumference, when carrying out the fire control to power battery, can carry out accurate jet cooling, improve the ageing of fire control through the nozzle to power battery. Through set up cooling tube 612 and cooling shower head 613 in battery compartment 3 top, when the fire control to power battery, can utilize cooling shower head 613 to cool down to battery compartment 3's environment, effectively reduce the temperature in the battery compartment 3, reduce the damage risk of other safety battery and interior spare part in the storehouse. Through setting up the second nozzle 6211 towards parking platform 2 at second fire control pipeline 62, can be when carrying out the fire control to power battery, be in parking platform 2's power battery through the accurate injection of second nozzle 6211, improve the fire control effect. Through setting up second nozzle 6211 in baffle 7 near one side of battery compartment 3 for second nozzle 6211 does not expose in parking platform 2 place space, does not influence parking platform 2's interior trim smoothness, does not encroach on parking platform 2 place space.

It should be noted that the above preferred embodiments are only used for illustrating the principle of the present application, and are not intended to limit the protection scope of the present application. Without departing from the principles of the present application, those skilled in the art can adjust the setting manner, so that the present application can be applied to more specific application scenarios.

For example, in an alternative embodiment, although the above embodiment has been described in connection with the fire apparatus 6 having the water tank 64 and the water pump 63, this embodiment is not invariably, and may be modified by those skilled in the art provided that the first fire fighting pipe 61 and the second fire fighting pipe 62 can be supplied with fire fighting water. For example, a fire pool may be used instead of the water tank 64, or the water tank 64 and the water pump 63 may not be provided, but the first fire hose 61 and the second fire hose 62 may be connected to a hydrant, thereby saving the costs of the water tank 64 and the water pump 63.

For another example, in another alternative embodiment, although the above embodiment is described in connection with a fire-fighting water source, the fire-fighting medium may be modified without departing from the principles of the present application. In other embodiments, the fire-fighting water source may also be replaced with other fire-fighting agents, such as carbon dioxide gas, dry powder, water-based fire extinguishing agents, and the like.

For another example, in another embodiment, a person skilled in the art may add or delete specific structures of the fire fighting device 6, so that the technical solution of the present application can be applied to more specific application scenarios. For example, in a possible embodiment, in a case where the space is sufficient, the fire fighting device 6 further includes a third fire protection pipeline, a first end of the third fire protection pipeline is communicated with a fire fighting water source through a third on-off valve, a second end of the third fire protection pipeline is provided with a plurality of second spraying pipes, each second spraying pipe extends to one bin of the battery bin 3, and each second spraying pipe is provided with a second spraying hole. The arrangement mode can ensure that the bin position of each battery bin 3 can be effectively used for fire fighting, but the cost of the fire fighting device 6 is increased, and the space of the charging and replacing station is occupied. For another example, the drainage tube 6112, the first nozzle 6113, the cooling tube 612 and the cooling shower head 613 can be selectively omitted.

As another example, in another alternative embodiment, although the above embodiment is described in connection with the second nozzle 6211 being disposed in the charging chamber, such an arrangement is merely illustrative of the principles of the present application and is not intended to limit the scope of the present application. The second fire fighting pipe 62 may be disposed at any position above the parking platform 2 if the interior effect on the electricity change cabin is not considered, and a nozzle may be provided at the bottom of the second end of the second fire fighting pipe 62.

For another example, in another alternative embodiment, to improve the stability of the control, a flow switch may be provided on each of the first fire-fighting pipe 61 and the second fire-fighting pipe 62 to monitor whether there is water flow in the fire-fighting pipes during the fire fighting process.

Of course, the above alternative embodiments, and the alternative embodiments and the preferred embodiments can also be used in a cross-matching manner, so that a new embodiment is combined to be suitable for a more specific application scenario.

Those skilled in the art will appreciate that although some embodiments described herein include some features included in other embodiments instead of others, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments. For example, in the claims of the present application, any of the claimed embodiments may be used in any combination.

Example 2

Referring now to fig. 4, a fire protection system for a charging and replacement station of the present application will be described. Fig. 4 is a system diagram of the fire fighting system for the charging and replacing power station of the present invention.

As shown in fig. 4, the fire fighting system of the present application mainly includes 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, where the control subsystem is connected to each of the other subsystems, respectively, for obtaining information sent by the other subsystems and controlling the corresponding subsystem to operate based on the information.

Specifically, the battery monitoring subsystem can acquire state information of the power battery, judge whether the power battery has a thermal runaway risk or is in a thermal runaway state based on the state information, and send out an alarm signal when the power battery has the thermal runaway risk or is in the thermal runaway state. The vehicle monitoring subsystem can acquire the information of whether the vehicle of the parking platform exists or not. The battery transfer subsystem comprises a battery lifting device and a battery translation device, the battery lifting device can rotate a dynamic battery between the battery bin and the battery translation device, and the battery translation device can rotate the dynamic battery between the battery lifting device and the parking platform. The fire fighting device is the fire fighting device in embodiment 1, and the specific composition and function thereof are not described in detail in this embodiment. The process monitoring subsystem can acquire process state information when the power battery with the thermal runaway risk or in the thermal runaway state is processed by fire protection. The alarm subsystem can send out an alarm. The control subsystem is respectively connected with the subsystems, and can control the action of the battery transfer subsystem based on the alarm signal and the information of the existence of the vehicle so as to transfer the power battery with the thermal runaway risk or in the thermal runaway state to the battery lifting device or the parking platform, control the fire-fighting device to carry out fire-fighting treatment on the power battery on the battery lifting device or the power battery on the parking platform, and control the alarm subsystem to send alarm information outwards. In the processing process, the control subsystem can also control the fire fighting device to stop the 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 acquired by the process monitoring subsystem.

Above-mentioned fire extinguishing system can make the power station that trades that fills of this application realize initiative fire control, has expanded fire control unit's suitability, has satisfied the fire control demand that unmanned on duty fills the power station that trades.

A preferred embodiment of the fire fighting system of the present application is described below.

In a more preferred embodiment, as shown in fig. 4, the status information includes internal status information of the power battery and environmental information of the environment in which the power battery is located. Accordingly, the battery monitoring subsystem may include a battery data monitoring unit, an environment monitoring unit, and a monitoring alarm unit. The battery data monitoring unit can acquire internal state information of the power battery, judge whether the power battery is in a normal state or not based on the internal state information, and send the acquired internal state information when the power battery is in an abnormal state. The environment monitoring unit can acquire the environment information of the environment where the power battery is located, and assist in judging whether the power battery is in a thermal runaway state or not and sending a thermal runaway signal when the power battery is in the thermal runaway state based on the environment information. The monitoring alarm unit can acquire the internal state information and the thermal runaway signal, judge whether the power battery has a thermal runaway risk or is in a thermal runaway state or not based on the internal state information and the thermal runaway signal, and send an alarm signal when the power battery has the thermal runaway risk or is in the thermal runaway state.

Specifically, the internal State information of the power battery may include a State of Charge (SOC), a cell voltage, a cell temperature, a temperature rise rate, a cell voltage difference, or alarm information. The BATTERY data monitoring unit may directly obtain one or more of the above internal state information, for example, obtain the internal state information of the power BATTERY through connection and communication between a charger on the BATTERY compartment and a BATTERY management system (BATTERY MANAGEMENT SYSTEM, referred to as BMS) of the power BATTERY, or directly collect the internal state information of the power BATTERY when the BMS of the BATTERY management system of the power BATTERY is abnormal. After the internal state information is acquired, the battery data monitoring unit judges whether the power battery is in a normal state or not based on the internal state information, and uploads the internal state information to the monitoring alarm unit when the power battery is in an abnormal state. For example, the battery data monitoring unit may include a control chip, such as a Programmable Logic Controller (PLC), and the battery data monitoring unit may determine whether the power battery is in a normal state by processing, calculating, comparing and the like the collected internal state information through the control chip, and send the internal state information or directly upload the internal state information to the monitoring alarm unit when the determination result is that the power battery is in an abnormal state. It should be understood that the battery monitoring subsystem may also be other devices that can perform related functions, such as an industrial personal computer, etc.

It should be explained that, in this embodiment, the normal state refers to a state where the internal parameter of the power battery does not exceed the safety threshold or the internal battery management system does not generate the alarm information when the power battery is stored in the battery compartment or during the charging and discharging processes, and correspondingly, the abnormal state is a state where the internal parameter of the power battery exceeds the safety threshold or the internal battery management system sends the alarm information, which may cause the thermal runaway of the power battery. For example, the normal temperature range of the power battery in the charging process is 20 ℃ to 60 ℃, when the monitored cell temperature is below 60 ℃, the power battery is determined to be in a normal state, and when the monitored cell temperature exceeds 60 ℃, the power battery is determined to be in an abnormal state. For another example, when the management system BMS of the power battery does not send the warning message, it is determined that the power battery is in a normal state, and when the management system BMS sends the warning message, it is determined that the power battery is in an abnormal state.

The environmental information of the environment where the power battery is located comprises the environmental temperature and the smoke concentration, the environment monitoring unit correspondingly comprises 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 and close to a pressure release valve of the power battery, and each power battery is correspondingly provided with one smoke detector. The smoke detector can monitor whether the pressure release valve of the power battery sprays smoke in real time, when the smoke reaches a certain concentration, the internal sampling circuit changes, the built-in main control chip judges the variable quantities to determine whether a fire alarm occurs, once the fire alarm is determined, a thermal runaway signal is sent out (if the signal is an on-off signal of a relay), and meanwhile, a buzzer can be started to give an alarm. The temperature detector can be arranged near the power battery, such as on a frame of a storage space where the power battery is located, and each power battery is provided with one 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 sends out an electric signal when the temperature reaches a certain threshold value.

The monitoring alarm unit can also comprise a control chip, such as a programmable logic controller or an industrial personal computer. The monitoring alarm unit can receive or acquire the internal state information sent by the battery data monitoring unit, then analyze and compare the internal state information, for example, compare the core temperature of the power battery with the maximum threshold value or analyze the rising trend of the core temperature within a plurality of seconds, and determine whether the power battery has a thermal runaway risk based on the analysis and comparison result. When the power battery has the risk of thermal runaway, an alarm signal is timely sent, for example, the alarm signal includes the position information of the power battery having the risk of thermal runaway, and the position information can be directly determined based on the number of the management system BMS of the power battery. The monitoring alarm unit can also receive or acquire a thermal runaway signal and an electric signal sent by the environment monitoring unit, once the signal is received, the fact that the temperature near the power battery is high and smoke is generated is proved, and then the monitoring alarm unit directly sends an alarm signal, for example, the alarm signal comprises position information of the thermal runaway power battery, and the position information can be determined in an auxiliary mode based on position numbers and the like of the smoke detector and/or the temperature detector.

The vehicle has or not the image information of information for parking platform, and vehicle monitoring subsystem is including setting up the image acquisition device in parking platform below, and if image acquisition device is industrial camera or binocular camera etc., this image acquisition device can gather parking platform's image information, and control subsystem can be based on image information confirms that parking platform has or not the vehicle. For example, a mark may be placed on the chassis of the vehicle, an image including the parking platform may be captured by an industrial camera or a binocular camera, and whether the mark is present in the image may be analyzed to determine whether the vehicle is parked on the parking platform. Preferably, the mark can be a visual positioning hole arranged on the bottom side rail of the vehicle, and the visual positioning hole is used for positioning the vehicle in the power exchanging process. It should be noted that the method for determining whether there is a preset mark based on image analysis performed by an industrial camera or a binocular camera is commonly used in the art, and is particularly commonly used in positioning before battery replacement of a vehicle, so details are not repeated in this embodiment.

Similarly to the battery data monitoring unit and the monitoring alarm unit, the control subsystem may also include a control chip, such as a Programmable Logic Controller (PLC). It should be understood that the battery monitoring subsystem may also be other devices that can perform related functions, such as an industrial personal computer, etc. The control subsystem can acquire the alarm signal of the monitoring alarm unit and issue a corresponding control instruction based on the alarm signal.

The battery transport subsystem includes a battery lifting device and a battery translation device, and the specific possible implementation manners of the two devices can refer to embodiment 1, which is not described in detail in this embodiment.

The alarm subsystem can be an alarm component capable of sending out an audible/visual alarm, such as a buzzer or an audible/visual alarm, and the buzzer or the audible/visual alarm is connected with the control subsystem, such as through a signal line, a control bus and other wired modes or through wireless communication. When the monitoring alarm unit sends an alarm signal, the control subsystem can control the alarm subsystem to give an alarm based on the alarm signal and remind all related personnel of evacuating.

The process monitoring information is video information or image information of the power battery, 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, and the first video acquisition device is arranged at the top of the battery lifting device and used for acquiring the video information or the image information of the power battery on the battery lifting device. If first video acquisition device is fixed to be set up on battery hoisting device's top crossbeam to its camera lens is towards battery hoisting device's plummer, and it is good to can acquire complete power battery when the fire control is handled. The second video collecting device can also be a camera or a video camera, which is arranged near the parking platform and is used for collecting the video information or the image information of the power battery on the parking platform. If the second video acquisition device is arranged right above the parking platform or at one wall corner of the power change cabin, the lens of the second video acquisition device faces the parking platform, and a complete power battery can be obtained during fire fighting treatment.

In the fire fighting process, the control subsystem controls the first video acquisition device or the second video acquisition device to shoot videos or images of the power battery, and after the videos or images are captured, whether the power battery has open fire and/or smoke is judged through an image analysis technology. When open fire and/or smoke are identified, the fire fighting effect proves to be poor, and further measures need to be taken to dispose of the power battery. If the power battery is analyzed to have no open fire or smoke, the power battery is proved to be in a controllable state, and the control subsystem can control the fire fighting device to stop fire fighting treatment at the moment.

The above embodiment has the advantages that: through the internal state information who adopts battery data monitoring unit control power battery, can appear the very first time of thermal runaway risk at power battery and know, promoted fire extinguishing system's fire control efficiency. The environment monitoring unit monitors the environment information of the environment where the power battery is located, a thermal runaway signal can be sent when the power battery generates smoke or catches fire, the thermal runaway judgment and the determination of the thermal runaway position of the power battery are assisted, and the power battery is conveniently and timely subjected to fire fighting treatment. Whether the parking platform has a vehicle or not is judged by collecting image information through an image collecting device below the parking platform, and a fire fighting treatment mode can be determined in time when a power battery is out of control due to heat or has a risk of out of control due to heat. Through the setting of first video acquisition device and second video acquisition device for when spraying the fire control to power battery, can effectively judge the fire control effect, stop the fire control unit under the power battery controllable state and handle power battery's fire control, practice thrift the fire control resource. Through setting up control subsystem for the fire extinguishing system of this application can realize initiative fire control, has improved the degree of automation and the fire control response speed that fill and trade the power station.

It should be noted that the above preferred embodiments are only used for illustrating the principle of the present invention, and are not intended to limit the protection scope of the present invention. Without departing from the principles of the present invention, those skilled in the art can adjust the setting manner described above, so that the present invention can be applied to more specific application scenarios.

For example, in an alternative embodiment, a person skilled in the art may add or subtract various subsystems of the fire protection system, as long as the added or subtracted fire protection system can achieve active fire protection. For example, the battery monitoring subsystem may only include a battery data monitoring unit and an environment monitoring unit, and omit the setting of the monitoring alarm unit, and then transfer the functions of the monitoring alarm unit to the control subsystem; and as for the process monitoring subsystem, the operation can be stopped after the fire fighting device is operated for a preset time instead of being arranged.

For another example, in an alternative embodiment, the environment monitoring unit is not arranged exclusively, and those skilled in the art may adjust the environment monitoring unit arbitrarily without departing from the principle of the present invention, as long as the adjustment can effectively collect the environment information of the environment where the power battery is located. For example, the smoke detector and the temperature detector may be provided only one of them, etc.; in addition, as several power batteries share one smoke detector or temperature detector, 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.

For another example, in another alternative embodiment, the vehicle monitoring subsystem is not configured in a permanent manner, and any possible configuration may be used as the vehicle monitoring subsystem on the premise that it can be determined whether the vehicle is parked on the parking platform. For example, infrared/ultraviolet cameras, infrared sensors, radar, etc. may also be employed as vehicle monitoring subsystems.

It will be understood by those skilled in the art that although not depicted, the monitoring alarm unit or control subsystem described above may also include some other well-known structures such as processors, controllers, memories, etc., including but not limited to ram, flash, rom, prom, eprom, volatile, nvm, serial, parallel, registers, etc., and processors, including but not limited to CPLD/FPGA, DSP, ARM processor, MIPS processor, etc., which are not shown in the drawings in order to unnecessarily obscure embodiments of the present disclosure.

It should be further noted that, the fire fighting system provided in the above embodiment is only exemplified by the division of the above functional subsystems (such as the battery monitoring subsystem, the vehicle monitoring subsystem, the battery transportation subsystem, and the like), and in practical applications, the above functional subsystems may be completed by different functional subsystems according to needs, that is, the functional subsystems in this embodiment are further decomposed or combined, for example, the functional subsystems in the above embodiment may be combined into one functional subsystem, or may be further split into a plurality of sub-units, so as to complete all or part of the functions described above. The functional subsystem names referred to in the present embodiment are for distinction only and are not to be construed as an improper limitation of the present application.

Example 3

The application also provides a charging and replacing power station which comprises the fire fighting device in the embodiment 1 or the fire fighting system in the embodiment 2.

Through set up above-mentioned fire control unit in filling and trading the power station, can promote to fill the fire control effect who trades the power station, eliminate conflagration hidden danger. Through filling and trade the power station in set up above-mentioned fire extinguishing system for the power station that trades that fills of this application has realized initiative fire control, has expanded fire control unit's suitability, has satisfied the fire control demand that unmanned on duty fills and trades the power station.

As can be understood by those skilled in the art, the charging and replacing power station has all the technical effects of the fire fighting device or the fire fighting system, which are not described herein again, because the charging and replacing power station includes the fire fighting device or the fire fighting system.

Example 4

The fire fighting method for the charging and replacing power station of the present application is described below with reference to fig. 5 and 6. Fig. 5 is a flowchart of a fire fighting method for a charging and replacing power station according to the present invention;

As shown in fig. 5, corresponding to the fire fighting system of the charging and replacing power station, the fire fighting control method for the charging and replacing power station mainly includes the following steps:

s101, acquiring state information of the power battery; for example, internal state information of a power battery and environment information of the environment where the power battery is located are obtained; the internal state information comprises one or more of a residual electric quantity value, a cell voltage, a cell temperature, a temperature rise rate, a cell pressure difference and alarm information, and the environment information comprises an environment temperature and/or a smoke concentration.

S103, judging whether the power battery has a thermal runaway risk or is in a thermal runaway state based on the state information; for example, whether the power battery has a thermal runaway risk is judged based on the internal state information, and whether the power battery is in a thermal runaway state is judged based on the environmental information.

S105, acquiring vehicle existence information of the parking platform; for example, when the power battery is judged to have a thermal runaway risk or be in a thermal runaway state, further acquiring information about whether the vehicle of the parking platform exists or not; the parking system comprises a parking platform, a vehicle, an image acquisition device, an industrial camera, a binocular camera and the like, wherein the vehicle presence or absence information is image information of the parking platform, the image acquisition device is arranged below the parking platform, and the image information of the parking platform is acquired through the image acquisition device.

S107, judging whether the vehicle is parked on the parking platform or not based on the information of whether the vehicle exists or not; for example, whether the parking platform parks the vehicle is judged by shooting an image including the parking platform and analyzing whether a mark representing the vehicle exists in the image, such as whether a visual positioning hole arranged on a vehicle bottom longitudinal beam exists in the image.

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, the power battery is transported to the battery lifting device, and the first on-off valve is controlled to be opened; 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 the parking platform has a vehicle parked, the power battery is transferred to the battery lifting device at the moment, then the first on-off valve of the fire fighting device is opened, the first fire fighting pipeline is communicated, and the power battery is sprayed and used for fire fighting through the first fire fighting pipeline.

S111, when the power battery has a thermal runaway risk or is in a thermal runaway state and a vehicle is not parked on the parking platform, the power battery is transferred to the parking platform, and the second on-off valve is controlled to be opened; 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 the parking platform does not park a vehicle, the power battery is transported to the parking platform at the moment, then a second on-off valve of the fire fighting device is opened, a second fire fighting pipeline is communicated, and the power battery is sprayed and firefighted through the second fire fighting pipeline.

By the aid of the fire fighting method, the charging and replacing power station can make timely decision on fire fighting modes by judging whether vehicles exist on the parking platform or not when the batteries have thermal runaway risks or thermal runaway occurs, and fire fighting effects and fire fighting safety are improved while fire fighting timeliness is guaranteed.

A preferred embodiment of the method of fire fighting of the present application is described below.

In a preferred embodiment, the status information includes internal status information of the power battery, and the step S103 further includes:

judging whether the power battery is in a normal state or not based on the internal state information; and when the power battery is in an abnormal state, judging that the power battery has a thermal runaway risk. Specifically, the internal State information may include an internal remaining power value (State of Charge, SOC), a cell voltage, a cell temperature, a temperature rise rate, a cell voltage difference, or alarm information. After the internal state information is acquired, whether the power battery is in a normal state or not is judged based on the internal state information, namely whether the parameters exceed a safety threshold or whether alarm information appears or not is judged. When the parameters do not exceed the safety threshold or no alarm information appears, judging that the power battery is in a normal state; otherwise, when the parameters exceed the safety threshold or alarm information appears, the power battery is judged to be in an abnormal state, and the risk of thermal runaway is caused.

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

judging whether the environment of the power battery is in a normal state or not based on the environment information; and when the environment is in an abnormal state, judging that the power battery is in a thermal runaway state. In particular, the environmental information may include smoke concentration and/or ambient temperature in the vicinity of the power cell. After the environmental information is acquired, whether the power battery is in a normal state or not is judged based on the environmental information, namely whether the smoke concentration or the environmental temperature exceeds a safety threshold or not is judged. When at least one of the smoke concentration and the environment temperature exceeds a safety threshold, judging that the power battery is in an abnormal state, and judging that the power battery is in a thermal runaway state; otherwise, when the smoke concentration and the environment temperature do not exceed the safety threshold, the power battery is judged to be in a normal state.

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

identifying whether a mark for representing the electric vehicle to be replaced is included in the image information or not based on the image information; 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, and if the image acquisition device is an industrial camera or a binocular camera, the image acquisition device can acquire image information of the parking platform and then determine whether the parking platform has a vehicle or not based on the image information. The vehicle chassis can be provided with a mark, and preferably, the mark can be a visual positioning hole arranged on a vehicle bottom longitudinal beam, and the visual positioning hole is used for positioning the vehicle in the battery replacement process. The image containing the parking platform is shot by the industrial camera or the binocular camera, and whether the mark exists in the image is analyzed to judge whether a vehicle is parked on the parking platform. When the mark is analyzed to be included in the image, judging that the parking platform parks the vehicle; otherwise, when the image analysis result shows that the image does not have the mark, the parking platform is judged not to park the vehicle.

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

controlling the battery bin to transfer the power battery to the battery lifting device; and controlling the battery lifting device to move to a preset height. Specifically, a conveying mechanism is arranged on the bin position of the battery bin, and the conveying mechanism can convey the power battery to a 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 ascends/descends to move the power battery to a preset height. Wherein, the predetermined height is confirmed based on the first shower among the fire extinguishing system and the position of setting of first nozzle, after power battery was moved to this predetermined height, can make the spraying effect preferred of first shower and first nozzle.

In a preferred embodiment, the step of "transferring the power battery to the parking platform" in step S111 further comprises:

controlling the battery bin 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; and controlling the battery translation device to move to the parking platform. Specifically, a conveying mechanism arranged on a bin position of the battery bin firstly conveys the power battery to a bearing table of a battery lifting device, then the battery lifting device descends to a position in butt joint with a battery translation device, and conveys the power battery to the battery translation device, and finally the battery translation device conveys the battery to a parking platform and continuously keeps the parking platform.

In a preferred embodiment, the fire protection system further comprises an alarm subsystem, and the fire protection method further comprises:

and when the power battery has a thermal runaway risk or is in a thermal runaway state, the control alarm subsystem sends out an alarm. Specifically, the alarm subsystem may be an alarm component capable of emitting an audible/visual alarm, such as a buzzer or an audible/visual alarm, and the buzzer or the audible/visual alarm is connected to the control subsystem, such as through a signal line, a control bus, or through a wired connection or a wireless communication connection. Whether the parking platform is parked with a vehicle or not, when the power battery is in a thermal runaway state or has a thermal runaway risk, the alarm subsystem is controlled to carry out sound/light alarm, and all related personnel are reminded to evacuate timely.

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

acquiring process state information of the power battery when the power battery is subjected to fire fighting treatment under the condition that the first on-off valve or the second on-off valve is opened; judging whether the power battery is in a controllable state or not based on the process state information; and when the power battery is in a controllable state, controlling the first on-off valve or the second on-off valve to close. Specifically, the process monitoring information is video information or image information of the power battery, 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, and the first video acquisition device is arranged at the top of the battery lifting device and used for acquiring the video information or the image information of the power battery on the battery lifting device. If first video acquisition device is fixed to be set up on battery hoisting device's top crossbeam to its camera lens is towards battery hoisting device's plummer, and it is good to can acquire complete power battery when the fire control is handled. The second video collecting device can also be a camera or a video camera, which is arranged near the parking platform and is used for collecting the video information or the image information of the power battery on the parking platform. If the second video acquisition device is arranged right above the parking platform or at one wall corner of the power change cabin, the lens of the second video acquisition device faces the parking platform, and a complete power battery can be obtained during fire fighting treatment.

In this application, the controllable state refers to a state in which the power battery has no open flame or smoke. In the fire fighting process, the control subsystem controls the first video acquisition device or the second video acquisition device to shoot videos or images of the power battery, and after the videos or images are captured, whether the power battery has open fire and/or smoke is judged through an image analysis technology. When open fire and/or smoke are identified, the fire fighting effect proves to be poor, and further measures need to be taken to dispose of the power battery. If the power battery is analyzed to have no open fire or smoke, the power battery is proved to be in a controllable state, and the control subsystem can control the fire fighting device to stop fire fighting treatment at the moment.

The above embodiment has the advantages that: the fire fighting mode is determined jointly through the state information based on the battery and the information of the vehicle, so that active fire fighting can be realized, real-time response is realized, the fire fighting effect is improved, and the fire fighting hidden danger can be eliminated. Whether the parking platform has a vehicle to judge through utilizing the image acquisition device of parking platform below to gather image information and analysis whether including the mark of vehicle bottom, can in time confirm the fire control processing mode when power battery thermal runaway appears or possesses the thermal runaway risk to need not to set up the mark alone in addition. Through video or image that acquire power battery in the fire control processing procedure and judge whether power battery is in controllable state, this application can also effectively judge the fire control effect, stops the fire control device under the controllable state of power battery and handles power battery's fire control, practices thrift the fire control resource.

One possible control procedure of the present application is described below with reference to fig. 6.

As shown in fig. 6, in one possible control process, the fire fighting method of the present application includes:

s301, acquiring the internal temperature of the battery, and executing the step S307;

s303, acquiring the ambient temperature near the battery, and executing the step S309;

s305, acquiring the smoke concentration near the battery, and executing the step S311;

s307, judging whether the internal temperature of the battery is greater than the internal temperature threshold value, if so, executing the step S313, otherwise, returning to execute the step S301 again;

s309, judging whether the ambient temperature near the battery is greater than the ambient temperature threshold value, if so, executing the step S313, otherwise, returning to execute the step S303 again;

s311, judging whether the smoke concentration near the battery is greater than the concentration threshold value, if so, executing the step S313, otherwise, returning to execute the step S305 again;

s313, locking the position of the risk battery according to the BMS number, the position code of the temperature detector, the position code of the smoke detector and the like of the power battery involved in the judging process, and then executing the step S315;

s315, judging whether the parking platform has a vehicle parked according to the image of the parking platform acquired by the image acquisition device, if so, executing the step S317, otherwise, executing the step S325;

s317, transferring the risk battery to a battery lifting device, and executing the step S319;

s319, opening the first on-off valve, controlling the water pump to start, using the first fire fighting channel to carry out spraying fire fighting on the power battery, and then operating S321;

s321, acquiring a video of the power battery through the first video acquisition device, judging whether the power battery has no open fire or smoke based on the video, if so, executing the step S323, otherwise, returning to continue executing the step S319;

s323, closing the first on-off valve and the water pump, and ending fire fighting;

s325, transferring the risk battery to a parking platform, and executing the step S327;

s327, opening a second on-off valve, controlling a water pump to start, using a second fire fighting channel to carry out spray fire fighting on the power battery, and then operating the step S329;

s329, acquiring a video of the power battery through a second video acquisition device, judging whether the power battery has no open fire or smoke based on the video, if so, executing the step S331, otherwise, returning to continue executing the step S327;

and S331, closing the first on-off valve and the water pump, and ending fire fighting.

It should be noted that, although the foregoing embodiments describe each step in the foregoing sequence, those skilled in the art can understand that, in order to achieve the effect of the present embodiment, different steps need not be executed in such sequence, and may be executed simultaneously (in parallel) or in reverse sequence, and these simple changes are all within the protection scope of the present application. For example, there is no specific sequence between the steps S101 and S105, and both steps may be executed simultaneously, or step S105 may be executed first and then step S101 may be executed.

So far, the technical solutions of the present application have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present application is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the present application, and the technical scheme after the changes or substitutions will fall into the protection scope of the present application.

Claims

1. A fire fighting device for a charging and replacing station, characterized in that the charging and replacing station comprises a box and a parking platform, a battery compartment, a battery lifting device and a battery translation device arranged in the box, the parking platform is arranged to be capable of carrying a vehicle to be replaced, the battery compartment is arranged to be capable of storing a power battery, the battery lifting device is arranged to be capable of rotating the power battery between the battery compartment and the battery translation device, the battery translation device is arranged to be capable of rotating the power battery between the battery lifting device and the parking platform,

2. The fire fighting device for the charging and replacing station as recited in claim 1, wherein the first spraying portion comprises a plurality of first spraying pipes communicated with the second end of the first fire fighting pipeline, the plurality of first spraying pipes are located above the battery lifting device, and each first spraying pipe is provided with a plurality of first spraying holes.

3. The fire fighting device for the charging and replacing station as recited in claim 1, wherein the first spraying section comprises a plurality of draft tubes communicating with the second end of the first fire fighting pipeline, the plurality of draft tubes being disposed around a circumference of the battery lifting device, each draft tube having a first nozzle disposed thereon facing the battery lifting device.

4. The fire fighting device for the charging and replacing station as defined in claim 1, further comprising a cooling pipe communicating with the second end of the first fire fighting pipeline, the cooling pipe being located above the battery compartment, the cooling pipe being provided with a cooling shower head.

5. The fire fighting device for the charging and replacing station as recited in claim 1, further comprising a third fire fighting pipeline, wherein a first end of the third fire fighting pipeline is communicated with a fire fighting water source through a third on-off valve, a second end of the third fire fighting pipeline is provided with a plurality of second spraying pipes, each second spraying pipe extends to one bin of the battery bin, and each second spraying pipe is provided with a second spraying hole.

6. The fire protection device for a charging and replacing station as claimed in claim 1, wherein the second spray portion comprises a plurality of second nozzles in communication with the second end of the second fire fighting pipe, each of the second nozzles being disposed toward the parking platform.

7. The fire fighting device for the charging and replacing station as recited in claim 6, wherein a partition is disposed between the parking platform and the battery compartment, and the second nozzle is located on a side of the partition close to the battery compartment.

8. The fire fighting device for the charging and replacing station as defined in claim 1, further comprising a water pump, an inlet of the water pump being in communication with the fire fighting water source, an outlet of the water pump being in communication with both the first fire fighting pipeline and the second fire fighting pipeline.

9. The fire fighting device for the charging and replacing power station as claimed in claim 8, wherein the fire fighting device comprises a plurality of water pumps, and the water pumps are connected in parallel through pipelines.

10. A fire protection system for a charging and replacement station, the fire protection system comprising:

a fire protection device as claimed in any one of claims 1 to 9;