CN117445669B - Electric automobile fire monitoring management system based on center platform system - Google Patents
Electric automobile fire monitoring management system based on center platform system Download PDFInfo
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- CN117445669B CN117445669B CN202311455180.8A CN202311455180A CN117445669B CN 117445669 B CN117445669 B CN 117445669B CN 202311455180 A CN202311455180 A CN 202311455180A CN 117445669 B CN117445669 B CN 117445669B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 34
- 239000000779 smoke Substances 0.000 claims description 32
- 239000007921 spray Substances 0.000 claims description 30
- 239000003795 chemical substances by application Substances 0.000 claims description 27
- 238000007405 data analysis Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 16
- 238000004458 analytical method Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 13
- 238000005507 spraying Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 238000003062 neural network model Methods 0.000 description 3
- 238000012549 training Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
-
- 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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0061—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electrical machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0084—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to control modules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention relates to the technical field of fire monitoring and management and discloses an electric automobile fire monitoring and management system based on a middle platform system.
Description
Technical Field
The invention relates to the technical field of fire monitoring and management, in particular to an electric automobile fire monitoring and management system based on a middle platform system.
Background
With the popularization and rapid development of electric vehicles, the risk of fire hazard of the electric vehicles is increasingly prominent due to the special properties of the components such as the battery pack, the motor and the controller.
However, fire monitoring management systems currently available on the market often have the following problems: the sensor is not intelligent enough, and the fire hazard cannot be accurately detected; the system lacks a unified data analysis and processing platform, cannot realize a real-time monitoring and sensitive early warning mechanism, and predicts potential fire risks; meanwhile, the automatic fire extinguishing device is not intelligent enough, and the spraying direction, quantity and release quantity of the fire extinguishing agent of the fire extinguishing spray nozzle cannot be intelligently controlled.
Disclosure of Invention
The invention aims to provide an electric automobile fire monitoring and managing system based on a middle platform system, which solves the technical problems.
An electric vehicle fire monitoring management system based on a center platform system, the system comprising: the system comprises a real-time monitoring module, a data analysis module and a fire extinguishing module;
The real-time monitoring module is used for monitoring the temperature, the smoke concentration and the working current parameters of each part of the electric automobile in real time;
The data analysis module is used for analyzing the data acquired by the real-time monitoring module and judging whether fire or fire risk occurs according to an analysis result;
the fire extinguishing module is used for making a fire extinguishing instruction according to the analysis result of the data analysis module, and then controlling the spraying direction, the quantity and the release quantity of the fire extinguishing agent of the fire extinguishing nozzle according to the fire extinguishing instruction.
As a further description of the solution of the present invention, the working process of the real-time monitoring module includes:
A group of sensors are respectively arranged at the battery pack, the motor and the controller of the electric automobile and used for acquiring the temperature, the smoke concentration and the working current parameters of the battery pack, the motor and the controller of the electric automobile in real time;
The battery pack, the motor and the controller are respectively numbered I, the numbers I are sequentially 1, 2 and 3, and the temperature, the smoke concentration and the working current parameters obtained by the sensors at the battery pack, the motor and the controller are respectively expressed as T i、Si and I i;
The monitored parameter data T i、Si and I i are stored in a system database.
As a further description of the solution of the present invention, the working process of the data analysis module includes:
Setting deltat as an analysis period, and calculating the temperature, smoke concentration and working current early warning coefficient of the three areas of the battery pack, the motor and the controller respectively through the following formulas every analysis period:
Wherein T 2-t1＝Δt,t2 is the current detection time, T i(t)、Si (T) and I i (T) are respectively a temperature time-varying curve, a smoke concentration time-varying curve and a working current time-varying curve of the battery pack, the motor and the controller, alpha i、βi and gamma i are respectively weight coefficients for calculating corresponding early warning coefficients of the battery pack, the motor and the controller, A i represents a temperature early warning coefficient, B i represents a smoke concentration early warning coefficient, and C i is a working current early warning coefficient;
Comparing A i、Bi and C i with set thresholds A thi、Bthi and C thi, respectively, wherein exceeding of any one of the set thresholds A thi、Bthi and C thi indicates that the electric vehicle is at risk of fire in the area, and corresponding measures should be immediately taken.
As a further description of the solution of the present invention, the working process of the data analysis module further includes:
The method comprises the steps of acquiring temperature, smoke concentration and working current parameters of three areas of a current battery pack, a motor and a controller in real time, and respectively calculating fire coefficients of the three areas of the battery pack, the motor and the controller through the following steps:
wherein ρ i is the fire coefficient of each region, τ, And ω is the weight coefficient of temperature, smoke concentration, working current, respectively, and τ,/>Omega is greater than 0, and determining the fire influence degree according to each parameter;
Comparing the fire coefficient ρ i of the fire coefficient of each zone with the set threshold ρ thi, if ρ i is greater than the set threshold ρ thi, indicating that the zone is fire, immediately extinguishing the fire by the fire extinguishing module.
As a further description of the solution of the present invention, the operation of the fire extinguishing module includes:
constructing a whole vehicle space coordinate system by taking the position of the fire extinguishing spray nozzle as an origin, and respectively recording central position coordinates (x i、yi、zi) of three areas of the battery pack, the motor and the controller;
And respectively calculating the distances between the coordinates of the central positions of the three areas of the battery pack, the motor and the controller and the position of the fire extinguishing nozzle:
Calculating the opening quantity of the fire extinguishing spray heads according to the following steps:
Substituting formula (5) into formula (6) to obtain the number of fire extinguishing spray heads to be opened, wherein, E and delta are conversion coefficients, n min is the minimum number of fire extinguishing spray heads to be opened under the current fire coefficient, F max is the maximum flow of the fire extinguishing agent of a single fire extinguishing spray head, L b is the standard fire extinguishing distance of the fire extinguishing spray heads, and [ (] is an addition integer symbol;
the amount of fire extinguishing agent released is calculated according to the formula:
substituting the formulas (5) and (6) into the formula (7) to obtain the release amount of the fire extinguishing agent, wherein d is a conversion coefficient, and Q min is the lowest release amount of the fire extinguishing agent of a single fire extinguishing nozzle under the current fire coefficient.
As a further description of the solution of the present invention, the fire extinguishing nozzle is set to a minimum opening number n min＝p*ρi under the current fire factor, and the minimum release amount Q min＝q*ρi of the fire extinguishing agent of the single fire extinguishing nozzle under the current fire factor.
As a further description of the solution of the present invention, the operation of the fire extinguishing module further includes:
The rotation angle θ L of the fire extinguishing nozzle in the horizontal direction and the rotation angle θ V of the fire extinguishing nozzle in the vertical direction are calculated by the following formulas, respectively:
wherein θ L is the angle between the line between the projected point of the coordinate (x i、yi、zi) in the xoy coordinate system and the origin of the coordinate system and the y coordinate axis, and θ V is the angle between the line between the coordinate (x i、yi、zi) and the origin of the coordinate system and the z coordinate axis.
As a further description of the scheme of the invention, the spraying direction, the quantity and the release quantity of the fire extinguishing agent of the fire extinguishing spray head can be manually controlled, and the priority of the manual control is higher than that of the fire extinguishing instruction.
The invention has the beneficial effects that:
According to the invention, the battery packs, the motors and the controllers of the three areas where the electric automobile is easy to catch fire are monitored in real time, the data analysis module analyzes the temperature, the smoke concentration and the working current parameters of each area respectively, judges whether fire occurs according to the parameter values at the current moment, judges whether fire risks occur in the areas of the electric automobile according to the real-time parameters at the current moment and parameter transformation in the period time if the fire does not occur in every other period, and carries out fire early warning, if the fire occurs, the fire extinguishing module formulates a fire extinguishing instruction according to the analysis result, and controls the spraying direction, the quantity and the release quantity of the fire extinguishing agent of the fire extinguishing spray heads according to the fire extinguishing instruction.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a portion of a workflow of a factory production digital intelligent management system provided by the present invention;
fig. 2 is a schematic diagram of a part of a factory production digital intelligent management system provided by the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 and 2, the present invention is an electric vehicle fire monitoring and managing system based on a center system, the system includes: the system comprises a real-time monitoring module, a data analysis module and a fire extinguishing module;
The real-time monitoring module is used for monitoring the temperature, the smoke concentration and the working current parameters of each part of the electric automobile in real time;
The data analysis module is used for analyzing the data acquired by the real-time monitoring module and judging whether fire or fire risk occurs according to an analysis result;
the fire extinguishing module is used for making a fire extinguishing instruction according to the analysis result of the data analysis module, and then controlling the spraying direction, the quantity and the release quantity of the fire extinguishing agent of the fire extinguishing nozzle according to the fire extinguishing instruction.
The working process of the real-time monitoring module comprises the following steps:
A group of sensors are respectively arranged at the battery pack, the motor and the controller of the electric automobile and used for acquiring the temperature, the smoke concentration and the working current parameters of the battery pack, the motor and the controller of the electric automobile in real time;
The battery pack, the motor and the controller are respectively numbered I, the numbers I are sequentially 1, 2 and 3, and the temperature, the smoke concentration and the working current parameters obtained by the sensors at the battery pack, the motor and the controller are respectively expressed as T i、Si and I i;
The monitored parameter data T i、Si and I i are stored in a system database.
According to the technical scheme, the battery packs, the motors and the controllers of the three areas where the electric automobile is easy to catch fire are monitored in real time, the data analysis module analyzes the temperature, the smoke concentration and the working current parameters of each area respectively, judges whether fire occurs according to the parameter values at the current moment, judges whether fire risks occur in the areas of the electric automobile according to the real-time parameters at the current moment and parameter transformation in the period time if the fire does not occur in every other period, and carries out fire early warning, and if the fire occurs, the fire extinguishing module formulates a fire extinguishing instruction according to the analysis result, and controls the spraying direction, the quantity and the release quantity of the fire extinguishing agent of the fire extinguishing nozzle according to the fire extinguishing instruction.
The working process of the data analysis module comprises the following steps:
Setting deltat as an analysis period, and calculating the temperature, smoke concentration and working current early warning coefficient of the three areas of the battery pack, the motor and the controller respectively through the following formulas every analysis period:
Wherein T 2-t1＝Δt,t2 is the current detection time, T i(t)、Si (T) and I i (T) are respectively a temperature time-varying curve, a smoke concentration time-varying curve and a working current time-varying curve of the battery pack, the motor and the controller, alpha i、βi and gamma i are respectively weight coefficients for calculating corresponding early warning coefficients of the battery pack, the motor and the controller, A i represents a temperature early warning coefficient, B i represents a smoke concentration early warning coefficient, and C i is a working current early warning coefficient;
Comparing A i、Bi and C i with set thresholds A thi、Bthi and C thi, respectively, wherein exceeding of any one of the set thresholds A thi、Bthi and C thi indicates that the electric vehicle is at risk of fire in the area, and corresponding measures should be immediately taken.
According to the technical scheme, the data analysis module respectively calculates the difference values of the parameter changes and the parameter average value changes of the temperature, the smoke concentration and the working current of the battery pack, the motor and the controller in the historical time period according to the formula, and combines the difference values of the parameter changes and the parameter average value of the temperature, the smoke concentration and the working current at the current moment to calculate the temperature, the smoke concentration and the working current early warning coefficient of three areas, and respectively compares A i、Bi and C i with the set threshold A thi、Bthi and C thi, wherein any item exceeding the set threshold A thi、Bthi and C thi indicates that the area of the electric vehicle has fire risk, and judges whether the electric vehicle has fire risk according to the historical data and the current data of the parameter, thereby improving the accuracy of fire monitoring.
It should be noted that α i、βi and γ i are empirical data, and may be obtained through training according to the corresponding neural network model.
The working process of the data analysis module further comprises the following steps:
The method comprises the steps of acquiring temperature, smoke concentration and working current parameters of three areas of a current battery pack, a motor and a controller in real time, and respectively calculating fire coefficients of the three areas of the battery pack, the motor and the controller through the following steps:
wherein ρ i is the fire coefficient of each region, τ, And ω is the weight coefficient of temperature, smoke concentration, working current, respectively, and τ,/>Omega is greater than 0, and determining the fire influence degree according to each parameter;
Comparing the fire coefficient ρ i of the fire coefficient of each zone with the set threshold ρ thi, if ρ i is greater than the set threshold ρ thi, indicating that the zone is fire, immediately extinguishing the fire by the fire extinguishing module.
Through the technical scheme, the data analysis module calculates fire coefficients according to the obtained real-time parameters of the temperatures, the smoke concentrations and the working currents of the three areas of the current battery pack, the current motor and the current controller, compares the fire coefficient rho i of the fire coefficients of the areas with the set threshold value rho thi, and if rho i is larger than the set threshold value rho thi, the fact that the area has fire is indicated, whether fire occurs or not is judged according to a plurality of parameters and the key degree of the fire caused by the parameters, so that misjudgment is avoided, and loss is caused to an electric automobile.
It is noted that τ,And omega is empirical data, and can be obtained through training according to a corresponding neural network model.
The working process of the fire extinguishing module comprises the following steps:
constructing a whole vehicle space coordinate system by taking the position of the fire extinguishing spray nozzle as an origin, and respectively recording central position coordinates (x i、yi、zi) of three areas of the battery pack, the motor and the controller;
And respectively calculating the distances between the coordinates of the central positions of the three areas of the battery pack, the motor and the controller and the position of the fire extinguishing nozzle:
Calculating the opening quantity of the fire extinguishing spray heads according to the following steps:
Substituting formula (5) into formula (6) to obtain the number of fire extinguishing spray heads to be opened, wherein, E and delta are conversion coefficients, n min is the minimum number of fire extinguishing spray heads to be opened under the current fire coefficient, F max is the maximum flow of the fire extinguishing agent of a single fire extinguishing spray head, L b is the standard fire extinguishing distance of the fire extinguishing spray heads, and [ (] is an addition integer symbol;
the amount of fire extinguishing agent released is calculated according to the formula:
substituting the formulas (5) and (6) into the formula (7) to obtain the release amount of the fire extinguishing agent, wherein d is a conversion coefficient, and Q min is the lowest release amount of the fire extinguishing agent of a single fire extinguishing nozzle under the current fire coefficient.
The lowest opening quantity n min＝p*ρi of the fire extinguishing spray heads under the current fire coefficient is set, and the lowest release quantity Q min＝q*ρi of the fire extinguishing agent of the single fire extinguishing spray heads under the current fire coefficient is set.
The working process of the fire extinguishing module further comprises the following steps:
The rotation angle θ L of the fire extinguishing nozzle in the horizontal direction and the rotation angle θ V of the fire extinguishing nozzle in the vertical direction are calculated by the following formulas, respectively:
wherein θ L is the angle between the line between the projected point of the coordinate (x i、yi、zi) in the xoy coordinate system and the origin of the coordinate system and the y coordinate axis, and θ V is the angle between the line between the coordinate (x i、yi、zi) and the origin of the coordinate system and the z coordinate axis.
The spraying direction, the quantity and the release quantity of the fire extinguishing agent of the fire extinguishing spray heads can be manually controlled, and the priority of manual control is higher than that of a fire extinguishing instruction.
Through the technical scheme, the invention uses the formula according to the position of the fire extinguishing nozzle and the spatial relationship among the three areas of the battery pack, the motor and the controller and the fire extinguishing nozzle Sum formulaThe number of the fire extinguishing spray heads which are controlled to be opened and the release amount of the fire extinguishing agent are calculated respectively under the current fire coefficient, and meanwhile, according to the space coordinates of three positions of the battery pack, the motor and the controller, the rotation angle theta L of the fire extinguishing spray heads in the horizontal direction and the rotation angle theta V of the fire extinguishing spray heads in the vertical direction are calculated, so that the problem that the follow-up repair of the electric vehicle is difficult due to excessive use of the fire extinguishing agent is avoided while accurate and rapid fire extinguishing is realized.
It should be noted that, e, δ, and d are empirical data, and may be obtained by training according to the corresponding neural network model.
Working principle:
Step S1, acquiring real-time parameters of temperature, smoke concentration and working current of three areas of a battery pack, a motor and a controller;
Step S2, judging whether fire disaster occurs currently or not according to the real-time parameters obtained in the step S1, if the fire disaster does not occur, entering the step S3, and if the fire disaster occurs, entering the step S4;
S3, taking deltat as an analysis period to acquire the temperature, smoke concentration and working current parameter change conditions of the three areas of the battery pack, the motor and the controller, and combining the current time real-time values of the parameters to judge whether fire risks occur, and immediately giving an early warning if the fire risks occur;
And S4, acquiring the space position coordinates of the fire extinguishing spray heads and the space position coordinates of the fire disaster areas, calculating the spraying direction, the quantity and the release quantity of the fire extinguishing agent of the fire extinguishing spray heads according to the space position relation of the space position coordinates and the space position coordinates of the fire disaster areas and the current fire disaster coefficient, and extinguishing fire.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (6)
1. Electric automobile fire monitoring management system based on platform system, characterized in that, the system includes: the system comprises a real-time monitoring module, a data analysis module and a fire extinguishing module;
The real-time monitoring module is used for monitoring the temperature, the smoke concentration and the working current parameters of each part of the electric automobile in real time;
The data analysis module is used for analyzing the data acquired by the real-time monitoring module and judging whether fire or fire risk occurs according to an analysis result;
The fire extinguishing module is used for formulating a fire extinguishing instruction according to the analysis result of the data analysis module, and then controlling the spraying direction, the quantity and the release quantity of the fire extinguishing agent of the fire extinguishing nozzle according to the fire extinguishing instruction;
The working process of the real-time monitoring module comprises the following steps:
A group of sensors are respectively arranged at the battery pack, the motor and the controller of the electric automobile and used for acquiring the temperature, the smoke concentration and the working current parameters of the battery pack, the motor and the controller of the electric automobile in real time;
The battery pack, the motor and the controller are respectively numbered i, the numbers i are sequentially 1, 2 and 3, and the temperature, the smoke concentration and the working current parameters obtained by the sensors at the battery pack, the motor and the controller are respectively expressed as And/>；
Parameter data obtained by monitoringAnd/>Storing the data in a system database;
the working process of the data analysis module comprises the following steps:
Setting up For one analysis period, the temperature, the smoke concentration and the working current early warning coefficient of the three areas of the battery pack, the motor and the controller are respectively calculated through the following formulas every analysis period:
in the/> For the current moment of detection,
And/>Temperature time-varying curve, smoke concentration time-varying curve and working current time-varying curve of three areas of battery pack, motor and controller respectively,/>And/>Weight coefficients of corresponding early warning coefficients of three areas of the battery pack, the motor and the controller are calculated respectively,/>Representing the temperature early warning coefficient,/>Is smoke concentration early warning coefficient,/>The working current early warning coefficient is used;
Will respectively 、/>And/>And a set threshold/>And/>Comparison, wherein any one of the terms exceeds a set threshold/>And/>The electric vehicle is indicated to have fire risk in the area, early warning should be immediately carried out, and corresponding measures should be taken.
2. The electric vehicle fire monitoring and management system based on the middle station system according to claim 1, wherein the working process of the data analysis module further comprises:
The method comprises the steps of acquiring temperature, smoke concentration and working current parameters of three areas of a current battery pack, a motor and a controller in real time, and respectively calculating fire coefficients of the three areas of the battery pack, the motor and the controller through the following steps: ; in the/> For the fire coefficient of each zone,/>And/>Weight coefficients of temperature, smoke concentration and working current respectively, and/>And/>Are all larger than 0, and are determined according to the influence degree of each parameter on fire;
fire coefficient of each region And set threshold/>Comparison, if/>Greater than a set thresholdIndicating that the area has a fire, and immediately extinguishing the fire through the fire extinguishing module.
3. The electric vehicle fire monitoring and management system based on the center station system according to claim 1, wherein the working process of the fire extinguishing module comprises:
constructing a whole vehicle space coordinate system by taking the position of a fire extinguishing nozzle as an origin, and respectively recording the central position coordinates of three areas of a battery pack, a motor and a controller ；
And respectively calculating the distances between the coordinates of the central positions of the three areas of the battery pack, the motor and the controller and the position of the fire extinguishing nozzle: ; calculating the opening quantity of the fire extinguishing spray heads according to the following steps: ; substituting formula (5) into formula (6) to obtain the opening quantity of the fire extinguishing spray heads, wherein, And/>For conversion coefficient,/>Setting the lowest opening quantity of fire extinguishing spray heads under the current fire coefficient,/>Maximum flow rate of fire extinguishing agent for single fire extinguishing nozzle,/>Setting standard fire extinguishing distance for fire extinguishing spray heads,/>Adding a rounding symbol;
the amount of fire extinguishing agent released is calculated according to the formula: ; substituting the formulas (5) and (6) into the formula (7) to obtain the release amount of the fire extinguishing agent, wherein d is a conversion coefficient,/> Is the lowest release of fire extinguishing agent from a single fire extinguishing nozzle at the current fire coefficient.
4. The electric vehicle fire monitoring and managing system based on the middle platform system according to claim 3, wherein the lowest opening number of the fire extinguishing spray heads is set under the current fire coefficientThe lowest release/>, of the extinguishing agent of the single extinguishing nozzle under the current fire coefficient。
5. The electric automobile fire monitoring and management system based on the center station system of claim 3, wherein the working process of the fire extinguishing module further comprises:
the rotation angle of the fire extinguishing nozzle in the horizontal direction is calculated respectively by the following formulas And the vertical rotation angle/>, of the fire extinguishing spray nozzle：/>; In the/>Is the coordinates/>Included angle between the line between the projection point in the xoy coordinate system and the origin of the coordinate system and the y coordinate axis,/>Is the coordinates/>And an included angle between a connecting line with the origin of the coordinate system and the z coordinate axis.
6. The electric automobile fire monitoring and managing system based on the middle platform system according to claim 1, wherein the spraying direction, the quantity and the release quantity of the fire extinguishing agent of the fire extinguishing spray heads can be manually controlled, and the priority of the manual control is higher than that of the fire extinguishing instruction.
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