CN111514489A - Automatic fire extinguishing method and system for new energy automobile battery box and mobile terminal - Google Patents
Automatic fire extinguishing method and system for new energy automobile battery box and mobile terminal Download PDFInfo
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- CN111514489A CN111514489A CN202010351562.6A CN202010351562A CN111514489A CN 111514489 A CN111514489 A CN 111514489A CN 202010351562 A CN202010351562 A CN 202010351562A CN 111514489 A CN111514489 A CN 111514489A
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/07—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
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Abstract
The invention provides an automatic fire extinguishing method, system and mobile terminal for a new energy automobile battery box, wherein the method comprises the following steps: acquiring the running state of a battery box in the new energy automobile, and performing fault analysis on the battery box according to the running state; if the battery box is judged to have a fault, inquiring the current fault type of the battery box according to the fault analysis result; inquiring a fire extinguishing strategy according to the current fault type, and executing fire extinguishing operation on the battery box according to the inquired fire extinguishing strategy; and acquiring the fire extinguishing state information and a locally pre-stored user communication address, and sending the fire extinguishing state information to the user communication address. The invention can analyze the fault based on the running state of the battery box to judge whether the battery box is in the fire state currently, thereby providing the accuracy of the fire detection of the battery box, and the design of acquiring the fire extinguishing state information in real time can send the fire extinguishing condition to the user in time, thereby facilitating the user to know the fire information.
Description
Technical Field
The invention belongs to the field of new energy vehicles, and particularly relates to an automatic fire extinguishing method and system for a battery box of a new energy vehicle and a mobile terminal.
Background
Nowadays, environmental pollution is more and more serious, the emission of automobile exhaust is an important factor causing the environmental pollution, and a new energy automobile is an automobile using electric energy as power, has little environmental pollution, adapts to the current environmental protection trend, and therefore the use population is gradually increasing. In the running process of the automobile, large power is needed, especially, a new energy automobile using electric energy as power needs to provide large current for a long time by using a battery in order to ensure the normal running of the automobile. After the battery outputs electric energy with larger current for a long time, the battery body can generate larger heat, and in a new energy automobile, for example, the battery box has poor heat dissipation or the battery differential heat is too large, so that the battery temperature is possibly too high, and a fire disaster or even an explosion danger is easily caused.
In the prior art, the fire state is directly judged by adopting a mode of detecting the temperature of the battery box, so that the accuracy of fire detection or fault detection of the battery box is low.
Disclosure of Invention
The embodiment of the invention aims to provide an automatic fire extinguishing method and system for a battery box of a new energy automobile and a mobile terminal, and aims to solve the problem of low detection accuracy caused by direct fire state judgment in a mode of detecting the temperature of the battery box in the use process of the existing new energy automobile.
The embodiment of the invention is realized in such a way that an automatic fire extinguishing method for a battery box of a new energy automobile comprises the following steps:
acquiring the running state of a battery box in the new energy automobile, and performing fault analysis on the battery box according to the running state;
if the battery box is judged to have a fault, inquiring the current fault type of the battery box according to the fault analysis result;
inquiring a fire extinguishing strategy according to the current fault type, and executing fire extinguishing operation on the battery box according to the inquired fire extinguishing strategy;
acquiring fire extinguishing state information and a locally pre-stored user communication address, and sending the fire extinguishing state information to the user communication address.
Further, the step of analyzing the fault of the battery box according to the operating state includes:
acquiring the charging electric quantity of the battery box within a first preset time, and if the charging electric quantity is larger than an electric quantity threshold value, judging that the battery box is in a fault state currently;
acquiring the current temperature of the battery box, and if the current temperature is greater than a temperature threshold value and the temperature rise speed of the battery box within second preset time is greater than a speed threshold value, judging that the battery box is in a fault state currently;
and acquiring current illumination information in the battery box, and judging that the battery box is in a fault state currently if the current illumination information is matched with locally pre-stored flame illumination information.
Further, the step of querying the current fault type of the battery box according to the fault analysis result comprises:
if the charging electric quantity is larger than the electric quantity threshold value, determining that the battery box is in an overcharge fault;
if the current temperature is greater than the temperature threshold value and the temperature rise speed of the battery box within the second preset time is greater than the speed threshold value, determining that the battery box is in a fire fault;
and if the current illumination information is matched with the flame illumination information, judging that the battery box is in a fire fault.
Further, the step of performing a fire extinguishing operation on the battery box according to the queried fire extinguishing strategy comprises:
when the battery box is judged to be in an overcharge fault, cutting off the charging voltage of the battery box;
when the battery box is judged to be in a fire fault, controlling a fire extinguisher to carry out fire extinguishing operation on the battery box, and acquiring the current pressure in the battery box;
and if the current pressure is greater than or equal to the pressure threshold value, starting an explosion-proof device on the battery box, and opening a pressure release valve on the battery box.
Further, after the step of determining that the battery box is in a fire fault, the method further includes:
and controlling an alarm in the new energy automobile to carry out fire acousto-optic alarm so as to prompt a driver and passengers to evacuate.
Still further, the method further comprises:
and acquiring the current pressure of the battery box, if the current pressure is greater than the preset pressure, and if the pressure lifting speed of the battery box in the second preset time is greater than the preset speed, judging that the battery box is in an overpressure state, and releasing the pressure of the battery box.
Another object of an embodiment of the present invention is to provide an automatic fire extinguishing system for a battery box of a new energy vehicle, including:
the fault analysis module is used for acquiring the running state of a battery box in the new energy automobile and analyzing the fault of the battery box according to the running state;
the fault query module is used for querying the current fault type of the battery box according to the fault analysis result if the battery box is judged to have the fault;
the fire extinguishing control module is used for inquiring a fire extinguishing strategy according to the current fault type and executing fire extinguishing operation on the battery box according to the inquired fire extinguishing strategy;
and the fire extinguishing information sending module is used for acquiring the fire extinguishing state information and a locally pre-stored user communication address and sending the fire extinguishing state information to the user communication address.
Still further, the fault analysis module is further configured to:
acquiring the charging electric quantity of the battery box within a first preset time, and if the charging electric quantity is larger than an electric quantity threshold value, judging that the battery box is in a fault state currently;
acquiring the current temperature of the battery box, and if the current temperature is greater than a temperature threshold value and the temperature rise speed of the battery box within second preset time is greater than a speed threshold value, judging that the battery box is in a fault state currently;
and acquiring current illumination information in the battery box, and judging that the battery box is in a fault state currently if the current illumination information is matched with locally pre-stored flame illumination information.
Another object of an embodiment of the present invention is to provide a mobile terminal, including a storage device and a processor, where the storage device is used to store a computer program, and the processor runs the computer program to make the mobile terminal execute the above-mentioned automatic fire extinguishing method for a battery box of a new energy vehicle.
Another object of an embodiment of the present invention is to provide a storage medium, which stores a computer program used in the mobile terminal, wherein the computer program, when executed by a processor, implements the steps of the above-mentioned automatic fire extinguishing method for a battery box of a new energy vehicle.
According to the embodiment of the invention, fault analysis can be carried out based on the running state of the battery box so as to judge whether the battery box is in the fire state currently, the accuracy of fire detection of the battery box is provided, and the fire extinguishing condition can be timely sent to a user through the design of acquiring the fire extinguishing state information in real time, so that the user can conveniently know the fire information.
Drawings
Fig. 1 is a flowchart of an automatic fire extinguishing method for a battery box of a new energy vehicle according to a first embodiment of the invention;
fig. 2 is a flowchart of an automatic fire extinguishing method for a battery box of a new energy vehicle according to a second embodiment of the invention;
fig. 3 is a schematic structural diagram of an automatic fire extinguishing system for a battery box of a new energy vehicle according to a third embodiment of the invention;
fig. 4 is a schematic structural diagram of a mobile terminal according to a fourth embodiment of the present invention;
the following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Example one
Referring to fig. 1, a flowchart of an automatic fire extinguishing method for a battery box of a new energy vehicle according to a first embodiment of the present invention includes the steps of:
step S10, acquiring the running state of a battery box in the new energy automobile, and performing fault analysis on the battery box according to the running state;
the battery box is internally provided with a plurality of sensors, the sensors comprise a flame sensor, a smoke sensor, a pressure sensor, a temperature sensor and the like, and the flame sensor, the smoke sensor, the pressure sensor and the temperature sensor are respectively used for detecting the illumination intensity, the smoke concentration, the pressure value and the temperature value in the battery box in real time so as to obtain the running state;
specifically, in the step, whether the battery box is in a fault state at present is judged by analyzing the illumination intensity, the smoke concentration, the pressure value and the temperature value in the battery box, and preferably, the fault state comprises a fire phenomenon, an overpressure state, a humidity state and the like;
step S20, if the battery box is judged to have faults, the current fault type of the battery box is inquired according to the fault analysis result;
wherein, the corresponding relationship between different fault analysis results and corresponding fault types is pre-stored locally, therefore, in this step, the query of the current fault type is performed according to the analysis result of step S10;
step S30, inquiring a fire extinguishing strategy according to the current fault type, and executing fire extinguishing operation on the battery box according to the inquired fire extinguishing strategy;
the fire extinguishing system comprises a local pre-stored strategy database, wherein the strategy database stores the corresponding relation between different fault types and corresponding fire extinguishing strategies, and strategy steps in the fire extinguishing strategies can be set according to the requirements of users;
step S40, acquiring fire extinguishing state information and a locally pre-stored user communication address, and sending the fire extinguishing state information to the user communication address;
preferably, in the step, a user communication address can be set according to the requirements of a user, for example, the user communication address can be set to be a mobile phone number, a fixed phone number or any application account number with a communication function;
this embodiment can carry out failure analysis based on the running state of this battery box to judge whether this battery box is in the conflagration state at present, provide battery box fire detection's accuracy, and through the design that acquires the status information of putting out a fire in real time, make and in time send the condition of putting out a fire to the user, made things convenient for the user to the understanding of condition of a fire information.
Example two
Referring to fig. 2, a flowchart of an automatic fire extinguishing method for a battery box of a new energy vehicle according to a second embodiment of the present invention includes the steps of:
step S11, acquiring the running state of a battery box in the new energy automobile, and acquiring the charging capacity of the battery box within a first preset time;
the first preset time may be set according to a requirement of a user, for example, the first preset time may be set to 5 minutes, 10 minutes, or 15 minutes, and the like;
specifically, in this step, the charging capacity of the battery box within a first preset time may be detected by using a capacity detector;
step S21, if the charging electric quantity is judged to be larger than the electric quantity threshold value, the current fault state of the battery box is judged;
the electric quantity threshold value can be set according to the requirements of a user, and when the charging electric quantity is judged to be larger than the electric quantity threshold value, the battery box is judged to be in an overcharged state within a first preset time;
step S31, acquiring the current temperature of the battery box, and if the current temperature is greater than a temperature threshold value and the temperature rise speed of the battery box in a second preset time is greater than a speed threshold value, judging that the battery box is in a fault state currently;
wherein, the temperature threshold, the second preset time and the speed threshold can be set according to the requirement of the user
Step S41, acquiring current illumination information in the battery box, and if the current illumination information is matched with locally pre-stored flame illumination information, judging that the battery box is in a fault state currently;
the flame sensor can be manufactured according to the characteristics, whether flame exists in the battery box or not is detected in an infrared sensing mode, namely the current illumination information in the battery box is obtained through the flame sensor, and if the current illumination information is matched with locally pre-stored flame illumination information, the battery box is judged to be in a fault state currently;
step S51, if the charging electric quantity is judged to be larger than the electric quantity threshold value, the battery box is judged to be in an overcharge fault;
step S61, if the current temperature is greater than the temperature threshold value and the temperature rise speed of the battery box in the second preset time is greater than the speed threshold value, determining that the battery box is in a fire fault;
preferably, after the step of determining that the battery box is in a fire fault, the method further includes:
controlling an alarm in the new energy automobile to carry out fire acousto-optic alarm to prompt a driver and passengers to evacuate, wherein when the battery box is judged to be in a fire fault, the buzzer is controlled to alarm by triggering the buzzer and the LED lamp, and the LED lamp is controlled to continuously flash red light and yellow light;
step S71, if the current illumination information is matched with the flame illumination information, the battery box is judged to be in a fire fault;
when the near-infrared wavelength domain and the ultraviolet light domain stored in the current illumination information are judged to be in the light domain range in the flame illumination information, the current illumination information is judged to be matched with the flame illumination information, and at the moment, the flame is judged to be generated in the battery box;
step S81, when the battery box is judged to be in the overcharge fault, the charging voltage of the battery box is cut off;
the design of cutting off the charging voltage of the battery box effectively prevents the battery box from being damaged due to overcharge, and the service life of the battery box is prolonged;
step S91, when the battery box is judged to be in fire fault, controlling a fire extinguisher to carry out fire extinguishing operation on the battery box, and acquiring the current pressure in the battery box;
the fire extinguisher adopts a water-based fire extinguishing agent to extinguish fire, so that the cost loss is effectively reduced to the minimum, the fire extinguishing agent is conveyed to each area through a high-pressure collecting pipe, a plurality of fire extinguishing agent nozzles are arranged in a battery box in a subarea manner to realize subarea control fire extinguishing, the working pressure of the fire extinguishing nozzles is above 0.5Mpa, and the temperature resistance value is above 800 ℃;
step S101, if the current pressure is greater than or equal to a pressure threshold value, starting an explosion-proof device on a battery box, and opening a pressure release valve on the battery box;
in the step, through starting the design of the explosion-proof device on the battery box, the bursting phenomenon of the battery box caused by overlarge pressure is effectively prevented, and the use safety of the battery box is improved;
step S111, acquiring fire extinguishing state information and a locally pre-stored user communication address, and sending the fire extinguishing state information to the user communication address;
in addition, in this embodiment, the method further includes:
and acquiring the current pressure of the battery box, if the current pressure is greater than the preset pressure, and if the pressure lifting speed of the battery box in the second preset time is greater than the preset speed, judging that the battery box is in an overpressure state, and releasing the pressure of the battery box.
The embodiment takes the spontaneous combustion accidents of the batteries of the new energy vehicles occurring in the current society as the starting point, and simultaneously bases the intelligent products of the vehicles mature at the present stage and the related academic research results, and the spontaneous combustion of the batteries is undoubtedly a secondary and dead test for all the personnel in the vehicles. In this embodiment, utilize flame sensor, temperature sensor, smoke transducer, pressure sensor, the common intelligent automobile product of modern automobiles such as extinguishing device to the car fuses as the organism, make one have concurrently detect, report to the police, the function of saving oneself simple structure, it is accurate to detect, convenient to use's safety coefficient, let the car can be under the condition that does not change original structure, this device all can normal operating under the assurance any circumstance, monitor the battery condition constantly through car ECU, a new, feasible solution is provided for this field. Has important significance for guaranteeing the life safety of vehicle-mounted personnel. Most of possible traffic hidden dangers are cut off at the source of traffic accidents as far as possible, so that the riding environment is safer and more comfortable.
This embodiment can carry out failure analysis based on the running state of this battery box to judge whether this battery box is in the conflagration state at present, provide battery box fire detection's accuracy, and through the design that acquires the status information of putting out a fire in real time, make and in time send the condition of putting out a fire to the user, made things convenient for the user to the understanding of condition of a fire information.
EXAMPLE III
Referring to fig. 3, a schematic structural diagram of an automatic fire extinguishing system 100 for a battery box of a new energy vehicle according to a third embodiment of the present invention includes: failure analysis module 10, trouble inquiry module 11, fire control module 12 and the information sending module of putting out a fire 13, wherein:
the fault analysis module 10 is used for acquiring the running state of a battery box in the new energy automobile and carrying out fault analysis on the battery box according to the running state.
Wherein the fault analysis module 11 is further configured to: acquiring the charging electric quantity of the battery box within a first preset time, and if the charging electric quantity is larger than an electric quantity threshold value, judging that the battery box is in a fault state currently;
acquiring the current temperature of the battery box, and if the current temperature is greater than a temperature threshold value and the temperature rise speed of the battery box within second preset time is greater than a speed threshold value, judging that the battery box is in a fault state currently;
and acquiring current illumination information in the battery box, and judging that the battery box is in a fault state currently if the current illumination information is matched with locally pre-stored flame illumination information.
And the fault query module 11 is configured to query a current fault type of the battery box according to a fault analysis result if it is determined that the battery box has a fault.
Wherein, the fault querying module 11 is further configured to: if the charging electric quantity is larger than the electric quantity threshold value, determining that the battery box is in an overcharge fault;
if the current temperature is greater than the temperature threshold value and the temperature rise speed of the battery box within the second preset time is greater than the speed threshold value, determining that the battery box is in a fire fault;
and if the current illumination information is matched with the flame illumination information, judging that the battery box is in a fire fault.
And the fire extinguishing control module 12 is used for inquiring a fire extinguishing strategy according to the current fault type and executing fire extinguishing operation on the battery box according to the inquired fire extinguishing strategy.
Wherein the fire extinguishing control module 12 is further configured to: when the battery box is judged to be in an overcharge fault, cutting off the charging voltage of the battery box;
when the battery box is judged to be in a fire fault, controlling a fire extinguisher to carry out fire extinguishing operation on the battery box, and acquiring the current pressure in the battery box;
and if the current pressure is greater than or equal to the pressure threshold value, starting an explosion-proof device on the battery box, and opening a pressure release valve on the battery box.
And the fire extinguishing information sending module 13 is configured to obtain fire extinguishing state information and a locally pre-stored user communication address, and send the fire extinguishing state information to the user communication address.
In addition, in this embodiment, the new energy vehicle battery box automatic fire extinguishing system 100 further includes:
and the evacuation prompting module 14 is used for controlling the alarm in the new energy automobile to perform fire acousto-optic alarm so as to prompt a driver and passengers to evacuate.
And the pressure relief module 15 is used for acquiring the current pressure of the battery box, if the current pressure is greater than the preset pressure, and when the pressure lifting speed of the battery box in the second preset time is greater than the preset speed, the battery box is judged to be in an overpressure state, and the battery box is subjected to pressure relief.
This embodiment can carry out failure analysis based on the running state of this battery box to judge whether this battery box is in the conflagration state at present, provide battery box fire detection's accuracy, and through the design that acquires the status information of putting out a fire in real time, make and in time send the condition of putting out a fire to the user, made things convenient for the user to the understanding of condition of a fire information.
Example four
Referring to fig. 4, a mobile terminal 101 according to a fourth embodiment of the present invention includes a storage device and a processor, where the storage device is used to store a computer program, and the processor runs the computer program to make the mobile terminal 101 execute the above-mentioned automatic fire extinguishing method for a battery box of a new energy vehicle.
The present embodiment also provides a storage medium on which a computer program used in the above-mentioned mobile terminal 101 is stored, which when executed, includes the steps of:
acquiring the running state of a battery box in the new energy automobile, and performing fault analysis on the battery box according to the running state;
if the battery box is judged to have a fault, inquiring the current fault type of the battery box according to the fault analysis result;
inquiring a fire extinguishing strategy according to the current fault type, and executing fire extinguishing operation on the battery box according to the inquired fire extinguishing strategy;
acquiring fire extinguishing state information and a locally pre-stored user communication address, and sending the fire extinguishing state information to the user communication address. The storage medium, such as: ROM/RAM, magnetic disk, optical disk, etc.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is used as an example, in practical applications, the above-mentioned function distribution may be performed by different functional units or modules according to needs, that is, the internal structure of the storage device is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit, and the integrated unit may be implemented in a form of hardware, or may be implemented in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application.
Those skilled in the art will appreciate that the composition shown in fig. 3 does not limit the automatic fire extinguishing system of the new energy vehicle battery box of the present invention, and may include more or less components than those shown, or some components in combination, or different component arrangements, and the automatic fire extinguishing method of the new energy vehicle battery box in fig. 1-2 is also implemented by using more or less components than those shown in fig. 3, or some components in combination, or different component arrangements. The unit, module, etc. referred to in the present invention refers to a series of computer programs that can be executed by a processor (not shown) in the target new energy vehicle battery box automatic fire extinguishing system and that can perform specific functions, and all of them can be stored in a storage device (not shown) of the target new energy vehicle battery box automatic fire extinguishing system.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. An automatic fire extinguishing method for a battery box of a new energy automobile is characterized by comprising the following steps:
acquiring the running state of a battery box in the new energy automobile, and performing fault analysis on the battery box according to the running state;
if the battery box is judged to have a fault, inquiring the current fault type of the battery box according to the fault analysis result;
inquiring a fire extinguishing strategy according to the current fault type, and executing fire extinguishing operation on the battery box according to the inquired fire extinguishing strategy;
acquiring fire extinguishing state information and a locally pre-stored user communication address, and sending the fire extinguishing state information to the user communication address.
2. The automatic fire extinguishing method for the battery box of the new energy automobile according to claim 1, wherein the step of performing fault analysis on the battery box according to the operation state comprises the following steps of:
acquiring the charging electric quantity of the battery box within a first preset time, and if the charging electric quantity is larger than an electric quantity threshold value, judging that the battery box is in a fault state currently;
acquiring the current temperature of the battery box, and if the current temperature is greater than a temperature threshold value and the temperature rise speed of the battery box within second preset time is greater than a speed threshold value, judging that the battery box is in a fault state currently;
and acquiring current illumination information in the battery box, and judging that the battery box is in a fault state currently if the current illumination information is matched with locally pre-stored flame illumination information.
3. The automatic fire extinguishing method for the battery box of the new energy automobile according to claim 2, wherein the step of inquiring the current fault type of the battery box according to the fault analysis result comprises the following steps:
if the charging electric quantity is larger than the electric quantity threshold value, determining that the battery box is in an overcharge fault;
if the current temperature is greater than the temperature threshold value and the temperature rise speed of the battery box within the second preset time is greater than the speed threshold value, determining that the battery box is in a fire fault;
and if the current illumination information is matched with the flame illumination information, judging that the battery box is in a fire fault.
4. The automatic fire extinguishing method for the battery box of the new energy automobile according to claim 3, wherein the step of performing the fire extinguishing operation on the battery box according to the inquired fire extinguishing strategy comprises the following steps of:
when the battery box is judged to be in an overcharge fault, cutting off the charging voltage of the battery box;
when the battery box is judged to be in a fire fault, controlling a fire extinguisher to carry out fire extinguishing operation on the battery box, and acquiring the current pressure in the battery box;
and if the current pressure is greater than or equal to the pressure threshold value, starting an explosion-proof device on the battery box, and opening a pressure release valve on the battery box.
5. The automatic fire extinguishing method for the battery box of the new energy automobile according to claim 3, wherein after the step of judging that the battery box is in fire fault, the method further comprises the following steps:
and controlling an alarm in the new energy automobile to carry out fire acousto-optic alarm so as to prompt a driver and passengers to evacuate.
6. The automatic fire extinguishing method for the battery box of the new energy automobile according to claim 1, characterized by further comprising:
and acquiring the current pressure of the battery box, if the current pressure is greater than the preset pressure, and if the pressure lifting speed of the battery box in the second preset time is greater than the preset speed, judging that the battery box is in an overpressure state, and releasing the pressure of the battery box.
7. The utility model provides a new energy automobile battery box automatic fire extinguishing system which characterized in that, the system includes:
the fault analysis module is used for acquiring the running state of a battery box in the new energy automobile and analyzing the fault of the battery box according to the running state;
the fault query module is used for querying the current fault type of the battery box according to the fault analysis result if the battery box is judged to have the fault;
the fire extinguishing control module is used for inquiring a fire extinguishing strategy according to the current fault type and executing fire extinguishing operation on the battery box according to the inquired fire extinguishing strategy;
and the fire extinguishing information sending module is used for acquiring the fire extinguishing state information and a locally pre-stored user communication address and sending the fire extinguishing state information to the user communication address.
8. The new energy vehicle battery box automatic fire extinguishing system according to claim 7, wherein the fault analysis module is further configured to:
acquiring the charging electric quantity of the battery box within a first preset time, and if the charging electric quantity is larger than an electric quantity threshold value, judging that the battery box is in a fault state currently;
acquiring the current temperature of the battery box, and if the current temperature is greater than a temperature threshold value and the temperature rise speed of the battery box within second preset time is greater than a speed threshold value, judging that the battery box is in a fault state currently;
and acquiring current illumination information in the battery box, and judging that the battery box is in a fault state currently if the current illumination information is matched with locally pre-stored flame illumination information.
9. A mobile terminal, characterized by comprising a storage device and a processor, wherein the storage device is used for storing a computer program, and the processor runs the computer program to enable the mobile terminal to execute the automatic fire extinguishing method for the new energy automobile battery box according to any one of claims 1 to 6.
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