CN110782633A - New energy automobile power battery thermal runaway alarm system and method - Google Patents
New energy automobile power battery thermal runaway alarm system and method Download PDFInfo
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- CN110782633A CN110782633A CN201911062960.XA CN201911062960A CN110782633A CN 110782633 A CN110782633 A CN 110782633A CN 201911062960 A CN201911062960 A CN 201911062960A CN 110782633 A CN110782633 A CN 110782633A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/185—Electrical failure alarms
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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
- 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
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
- G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
- G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources
- G08B5/38—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources using flashing light
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention discloses a thermal runaway alarm system for a power battery of a new energy automobile, which comprises a power module, a thermal runaway monitoring module for the power battery, a power battery management control module, a whole automobile control module, an automobile body control module, an automobile information display module, a whole automobile networking module and a vehicle background big data service module. The power battery thermal runaway monitoring module is connected with the power battery management control module and the whole vehicle control module. The whole vehicle control module is connected with the vehicle body control module, the whole vehicle networking module and the vehicle information display module. The whole vehicle networking module is connected with the vehicle background big data service module through a network. The invention adopts the module to monitor the vehicle thermal time-space event, when the vehicle has a thermal runaway event, the vehicle is controlled to give an alarm, and the event information is rapidly transmitted to the vehicle user and the fire department through the vehicle background big data service module, so that the personal injury and the economic loss caused by the thermal runaway event of the power battery can be reduced to the maximum extent.
Description
Technical Field
The invention relates to the field of a whole new energy automobile control system, in particular to a new energy automobile power battery thermal runaway alarm system framework and a control method.
Background
The sales volume of new energy automobiles in China is on the trend of increasing year by year, and the new energy automobiles are expected to be produced and sold by not less than 150 thousands of automobiles at the end of 2019. The huge market of the scale forces the transformation of the whole automobile industry, brings about the serious problems that the traditional fuel vehicles do not face, such as the ignition, combustion and explosion of the power battery, and the like, and according to incomplete statistics, in 2018, over 40 cases of new energy vehicle spontaneous combustion accidents are accumulated, wherein over 80% of the accidents are caused by the thermal runaway of the power battery.
Due to the tightening of national regulations and the serious market problems of spontaneous combustion of frequent new energy vehicles and the like, the technical research on thermal runaway of power batteries has been gradually carried out in the industry, but at the present stage, the focus is on analyzing the principle of the thermal runaway of the power batteries, a detection method of the thermal runaway of the power batteries and the like, and the research on the whole vehicle-level systems of the whole vehicle, such as fault processing, an alarm mechanism, dangerous event information transmission and the like after the thermal runaway of the vehicle occurs is less. Patent document CN201910244961.X discloses a battery safety management method, a device and a new energy automobile, and the method judges whether thermal runaway occurs in a power battery pack according to monitoring data, and detects the thermal runaway state of the power battery pack by using the monitoring data of the power battery pack, so that when the thermal runaway occurs in the power battery pack, a battery management system and/or a whole vehicle control system are controlled to perform thermal runaway alarm to remind passengers to evacuate, the safety of the passengers is ensured, the condition that the passengers are dangerous due to thermal diffusion caused by thermal runaway of a single battery is avoided, and the safety of the power battery pack is improved. However, the key point of the patent document is to study how to accurately identify whether the thermal runaway of the battery system occurs, and no deep study is made on the failure alarm mechanism and path of the whole system and the corresponding functional architecture after the thermal runaway event occurs.
Disclosure of Invention
The invention provides a thermal runaway alarm system for a power battery of a new energy automobile, which aims to give an alarm to the vehicle in time and inform a user and a fire department of the alarm after a thermal runaway event of the power battery occurs in the vehicle, so that personal injury and economic loss caused by the thermal runaway event of the power battery are reduced to the maximum extent.
The technical scheme of the invention is as follows:
the invention discloses a power battery thermal runaway alarm system, which comprises: the system comprises a power module, a power battery thermal runaway monitoring module, a power battery management control module, a vehicle body control module, a whole vehicle networking module, a vehicle information display module and a vehicle background big data service module.
The power module provides power for all other modules. Specifically, the power module has two main functions, namely that no matter the vehicle is in a power-on or power-off state, the power battery thermal runaway monitoring module provides a continuous working power supply; and secondly, providing working power supplies for all controllers of the whole vehicle system in a vehicle power-on state.
The power battery thermal runaway monitoring module is connected with the power battery management control module and the whole vehicle control module, detects the state of the power battery, judges whether thermal runaway is about to occur or is occurring, and informs the thermal runaway event information to the power battery management control module and the whole vehicle control module. The power battery thermal runaway monitoring module is positioned inside the power battery, and the module is always in a working state no matter what state the vehicle is in.
Specifically, the module judges whether the power battery is about to occur or is in thermal runaway through collecting the temperature of the battery module and the gas pressure in the battery pack. And as long as the power battery thermal runaway monitoring module detects that any one parameter of the temperature or the pressure exceeds a normal threshold range, the power battery management control module and the whole vehicle control module need to be awakened, and the thermal runaway event is informed to the power battery management control module and the whole vehicle control module.
And the power battery management control module is used for controlling the state of the high-voltage relay, carrying out secondary collection on the temperature of the battery module and sending the temperature to the whole vehicle control module.
Specifically, the power battery management control module is mainly used for:
① when the power battery has thermal runaway and the whole vehicle is in high-voltage power-on state, the power battery management control module should control the high-voltage relay to be switched off immediately;
② when the power battery has thermal runaway and the whole vehicle is under high voltage, the power battery management control module controls the high voltage relay to maintain the off state;
③, the temperature of the power battery is detected redundantly, and the temperature state information is sent to the vehicle control module for redundancy judgment.
And the whole vehicle control module is connected with the vehicle body control module, the whole vehicle networking module and the vehicle information display module and is used for confirming that the thermal runaway event of the power battery really occurs, and awakening and sending the state of the thermal runaway event of the power battery to the related module.
Specifically, the vehicle control module receives a wake-up signal from the power battery thermal runaway monitoring module, and the wake-up operation is performed when the wake-up signal is effective. The whole vehicle control module receives the state information of the thermal runaway event of the power battery and the temperature of the power battery management control module after being awakened, and triggers the thermal runaway treatment measure of the whole vehicle control module after the thermal runaway event is represented by two states from different modules, wherein the specific treatment measures are as follows:
① awakening vehicle body control module, whole vehicle networking module and vehicle information display module
② sending the thermal runaway event status to the vehicle body control module, the entire vehicle networking module and the vehicle information display module
The vehicle body control module receives a vehicle thermal runaway event state from the whole vehicle control module and continuously controls vehicle light double-flash warning, vehicle door four-door unlocking and horn sounding before the thermal runaway event disappears according to the state.
The vehicle information display module receives the vehicle thermal runaway event state from the whole vehicle control module and continuously prompts fault information on an instrument or a central control screen according to the state.
The whole vehicle networking module receives information from the whole vehicle control module to confirm whether a thermal runaway event occurs in the power battery, and after the thermal runaway event is confirmed, the whole vehicle networking module executes the following processing:
①, the power battery thermal runaway event information is stored locally, including the information such as the time of the thermal runaway event, the temperature of the power battery when the thermal runaway event occurs, and the position of the vehicle when the thermal runaway event occurs
②, the thermal runaway event information is transmitted to the vehicle background big data service module through the 4G/5G network
The vehicle background big data service module performs the following processing after receiving the thermal runaway event information reported by the whole vehicle networking module:
①, the power battery thermal runaway event information is pushed to the mobile phone number bound by the user in a short message manner
②, the power battery thermal runaway event information is pushed to the mobile phone APP bound by the user in a short message mode in the mobile phone APP
③ through 360 degree around view system camera outside the vehicle and driving fatigue monitoring camera inside the vehicle, obtain environment snapshot outside and inside the vehicle, if the vehicle is in thermal runaway incident, then dial fire alarm call.
The invention also provides a thermal runaway alarm method for the power battery of the new energy automobile, which comprises the following steps:
s1, the thermal runaway monitoring module of the power battery collects the temperature of a battery module and the gas pressure in the battery pack, and when the temperature of the battery module is higher than a safety threshold or the gas pressure is higher than the safety threshold, the thermal runaway monitoring module of the power battery considers that a thermal runaway event occurs, wakes up the management control module of the power battery and the control module of the whole vehicle, and sends the thermal runaway event to the management control module of the power battery and the control module of the whole vehicle.
S2, after the power battery management control module is awakened, if the whole vehicle is detected to be in a high-voltage power-on state, the high-voltage relay is controlled to be switched off; if the whole vehicle is detected to be in a high-voltage off state, controlling a high-voltage relay to maintain the off state; and carry out the secondary collection to battery module temperature, send the temperature information of gathering to whole car control module.
And S3, the whole vehicle control module performs redundancy judgment according to the thermal runaway event fed back by the power battery thermal runaway monitoring module and the temperature information fed back by the power battery management control module, and when the situation that the two information sources simultaneously represent the occurrence of the thermal runaway event of the power battery is judged, the fact that the thermal runaway event of the power battery really occurs is confirmed, and the state of the thermal runaway event of the power battery is awakened and sent to the vehicle body control module, the vehicle information display module and the whole vehicle networking module.
And S4, after the vehicle body control module is awakened and the power battery thermal runaway event state from the whole vehicle control module is confirmed to be received, controlling the vehicle to send alarm information.
S5, after the vehicle information display module is awakened and confirms that the thermal runaway event state of the power battery from the whole vehicle control module is received, controlling a vehicle instrument or a central control screen to prompt fault information;
s6, after the whole vehicle networking module is awakened and the state of the thermal runaway event of the power battery from the whole vehicle control module is confirmed to be received, storing the information such as the battery temperature when the thermal runaway event occurs, the gas pressure in the battery pack, the fault occurrence time, the fault occurrence place, the battery electric quantity when the fault occurs, the environmental temperature when the fault occurs, the battery state when the fault occurs and the like in the local SD card; and the information is transmitted back to the vehicle background big data service module through the network.
And S7, after receiving the thermal runaway event information from the whole vehicle networking module, the vehicle background big data service module sends alarm information to a user and dials a fire fighting alarm call.
Specifically, the vehicle background big data service module pushes a short message to a user registration mobile phone number, and pushes an in-application message to a user registration APP, wherein the pushed message at least comprises a fault name, fault occurrence time, a fault occurrence place and the like.
In addition, the vehicle background big data service module activates a vehicle snapshot function in a remote control mode, namely environment snapshots outside and inside the vehicle are obtained through a 360-degree look-around system camera outside the vehicle and a driving fatigue monitoring camera inside the vehicle, and after the environment snapshots are quickly and comprehensively compared with uploaded thermal runaway event information, a fire alarm call is dialed.
The invention has the advantages that the vehicle thermal runaway event is monitored by adopting an effective means, and when the vehicle has the thermal runaway event, fault warning can be accurately, efficiently and safely carried out on vehicle users and personnel around the vehicle in various modes such as audible and visual alarm of a vehicle terminal, background message pushing of a server and the like.
Drawings
Fig. 1 is a schematic diagram of a thermal runaway alarm system for a new energy automobile power battery.
FIG. 2 is a flow chart of the functional implementation of the thermal runaway alarm system for the power battery of the new energy automobile.
Detailed Description
The invention is further described below with reference to fig. 1 and 2.
The thermal runaway alarm system for the power battery of the new energy automobile is shown in figure 1 and comprises a power module 1 (adopting a lead-acid battery), a thermal runaway monitoring module 2 for the power battery, a power battery management control module 3, a whole automobile control module 4, an automobile body control module 5, an automobile information display module 6, a whole automobile networking module 7 and an automobile background big data service module 8.
The connection mode of each module in the alarm system is as follows:
① Power Module 1 provides the power supply for all control modules.
② the power battery thermal runaway monitoring module 2 is connected with the power battery management control module 3 and the vehicle control module 4.
③ the whole vehicle control module 4 is connected with the vehicle body control module 5, the whole vehicle networking module 7 and the vehicle information display module 6.
④ the whole car networking module is connected with the vehicle background big data service module through the 4G/5G network.
The implementation flow of the thermal runaway alarm system for the power battery is shown in figure 2:
s1, a power battery thermal runaway monitoring module 2 needs to collect the temperature of a battery module and the gas pressure in a battery pack, judge whether the temperature of the battery module is higher than a safety threshold (obtained according to a battery pack special test) or whether the gas pressure is higher than the safety threshold (obtained according to a battery pack special test), and when any one of the temperature and the gas pressure is higher than the safety threshold, the power battery thermal runaway monitoring module considers that a thermal runaway event occurs, and at the moment, awakens a power battery management control module 3 and a vehicle control module 4, and sends the thermal runaway event to the power battery management control module 3 and the vehicle control module 4.
S2, after the power battery management control module 3 is awakened, if the whole vehicle is in a high-voltage power-on state, the high-voltage relay is controlled to be switched off; and if the whole vehicle is in a high-voltage off state, controlling the high-voltage relay to maintain the off state. Meanwhile, the power battery management control module 3 adopts a redundant battery module temperature sensor to perform secondary collection on the temperature of the battery module, and sends collected temperature information to the vehicle control module 4.
S3, the whole vehicle control module 4 carries out redundancy judgment according to the thermal runaway event fed back by the power battery thermal runaway monitoring module 2 and the temperature information fed back by the power battery management control module 3, only when two information sources simultaneously represent the occurrence of the thermal runaway event of the power battery, the fact that the thermal runaway event of the power battery actually occurs is confirmed, and the vehicle body control module 5, the vehicle information display module 6 and the whole vehicle networking module 7 are awakened; and sending the thermal runaway event state of the power battery to a vehicle body control module 5, a vehicle information display module 6 and a whole vehicle networking module 7.
And S4, after the vehicle body control module 5 is awakened and confirms that the thermal runaway event state of the power battery from the vehicle body control module 4 is received, controlling the light of the vehicle to be in a double-flashing state, unlocking the four doors of the vehicle door and sounding the horn of the vehicle.
And S5, after the vehicle information display module 6 is awakened and confirms that the thermal runaway event state of the power battery from the whole vehicle control module 4 is received, controlling a vehicle instrument or a central control screen to prompt fault information.
S6, after the whole vehicle networking module 7 is awakened and confirms that the thermal runaway event state of the power battery from the whole vehicle control module 4 is received, storing information such as the battery temperature when the thermal runaway event occurs, the gas pressure in a battery pack, the fault occurrence time, the fault occurrence place, the battery electric quantity when the fault occurs, the environmental temperature when the fault occurs, the battery state when the fault occurs and the like in the local SD card; and the information is transmitted back to the vehicle background big data service module 8 through the 4G/5G network.
And S7, after receiving the thermal runaway event information from the whole vehicle networking module 7, the vehicle background big data service module 8 pushes a short message to a user registration mobile phone number, and pushes an in-application message to a user registration APP, wherein the pushed message at least comprises a fault name, fault occurrence time, a fault occurrence place and the like. In addition, the vehicle background big data service module 8 activates a vehicle snapshot function in a remote control mode, namely, environment snapshots outside and inside the vehicle are obtained through a 360-degree look-around system camera outside the vehicle and a driving fatigue monitoring camera inside the vehicle, and after the environment snapshots are quickly and comprehensively compared with uploaded thermal runaway event information, a fire alarm call is made.
Those of skill in the art will appreciate that the method steps described in connection with the embodiments disclosed herein may be implemented as hardware, a software module executed by a processor, or a combination of the two. The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (12)
1. A new energy automobile power battery thermal runaway alarm system is characterized by comprising a power module (1), a power battery thermal runaway monitoring module (2), a power battery management control module (3), a whole automobile control module (4), an automobile body control module (5), a vehicle information display module (6), a whole automobile networking module (7) and a vehicle background big data service module (8);
the power module (1) provides power for all other modules;
the power battery thermal runaway monitoring module (2) is connected with the power battery management control module (3) and the whole vehicle control module (4), detects the state of the power battery, judges whether thermal runaway is about to occur or is occurring, and informs the thermal runaway event information to the power battery management control module and the whole vehicle control module;
the power battery management control module (3) is used for controlling the state of the high-voltage relay, carrying out secondary collection on the temperature of the battery module and sending the temperature to the whole vehicle control module (4);
the whole vehicle control module (4) is connected with the vehicle body control module (5), the whole vehicle networking module (7) and the vehicle information display module (6) and is used for confirming that the power battery thermal runaway event really occurs, awakening and sending the power battery thermal runaway event state to the related module;
the vehicle body control module (5) is used for controlling the working states of vehicle light, a vehicle door and a vehicle horn;
the vehicle information display module (6) is used for controlling a vehicle instrument or a central control screen to prompt fault information;
the whole vehicle networking module (7) is connected with the vehicle background big data service module through a network and is used for storing information in the local SD card when a thermal runaway event occurs and transmitting the information back to the vehicle background big data service module (8);
and the vehicle background big data service module (8) is used for sending alarm information to a user and dialing a fire-fighting alarm call after receiving the thermal runaway event information from the whole vehicle networking module (7).
2. The new energy automobile power battery thermal runaway alarm system as claimed in claim 1, wherein the power battery thermal runaway monitoring module (2) judges whether a thermal runaway of the power battery is about to occur or is occurring by collecting the temperature of the battery module and the gas pressure in the battery pack, and as long as the power battery thermal runaway monitoring module detects that any one of the temperature or the pressure exceeds a normal threshold range, the power battery management control module and the whole automobile control module need to be awakened, and the thermal runaway event is notified to the power battery management control module and the whole automobile control module.
3. The thermal runaway alarm system for the power battery of the new energy automobile as claimed in claim 1, wherein the power battery management control module (3) is configured to, after being awakened, control the high-voltage relay to be turned off if the whole automobile is detected to be in a high-voltage power-on state; if the whole vehicle is detected to be in a high-voltage off state, controlling a high-voltage relay to maintain the off state; and the power battery management control module (3) is also used for carrying out secondary collection on the temperature of the battery module by adopting a redundant battery module temperature sensor and sending collected temperature information to the whole vehicle control module (4).
4. The new energy automobile power battery thermal runaway alarm system as claimed in claim 1, wherein the entire automobile control module (4) is configured to perform redundancy judgment according to a thermal runaway event fed back by the power battery thermal runaway monitoring module (2) and temperature information fed back by the power battery management control module (3), confirm that the power battery thermal runaway event indeed occurs when two information sources simultaneously represent the occurrence of the power battery thermal runaway event, wake up the automobile body control module (4), the vehicle information display module (6) and the entire automobile networking module (7), and send the state of the power battery thermal runaway event to the automobile body control module (5), the vehicle information display module (6) and the entire automobile networking module (7).
5. The new energy automobile power battery thermal runaway alarm system as claimed in claim 1, wherein the automobile body control module (5) is used for controlling the light of the automobile to be in a double-flashing state, the four doors of the automobile are unlocked, and the horn of the automobile is sounded after being awakened and confirming that the power battery thermal runaway event state from the whole automobile control module (4) is received.
6. The new energy automobile power battery thermal runaway alarm system as claimed in claim 1, wherein the whole automobile networking module (7) is configured to perform data storage on information when a thermal runaway event occurs in a local SD card after being awakened and confirming that a power battery thermal runaway event state from the whole automobile control module (4) is received, and transmit the information back to the vehicle background big data service module (8).
7. The warning method for the thermal runaway of the power battery of the new energy automobile according to claim 6, wherein the information when the thermal runaway event occurs comprises battery temperature, gas pressure in the battery pack, fault occurrence time, fault occurrence location, battery power when the fault occurs, ambient temperature when the fault occurs, and battery state information when the fault occurs.
8. The new energy automobile power battery thermal runaway alarm system as claimed in claim 1, wherein the vehicle background big data service module (8) is configured to push a short message to a user registration mobile phone number after receiving thermal runaway event information from the entire automobile networking module (7), push an in-application message to a user registration APP, the pushed message at least includes a fault name, fault occurrence time, fault occurrence location, and the like, and the vehicle background big data service module (8) activates a vehicle snapshot function in a remote control manner, that is, an external environment snapshot and an internal environment snapshot are obtained by looking around a system camera by 360 degrees outside the vehicle and an internal driving fatigue monitoring camera in the vehicle, and a fire alarm call is dialed after rapid comprehensive comparison with uploaded thermal runaway event information.
9. A thermal runaway alarm method for a new energy automobile power battery is characterized by comprising the following steps:
s1, a power battery thermal runaway monitoring module (2) collects the temperature of a battery module and the gas pressure in a battery pack, and when the temperature of the battery module is higher than a safety threshold or the gas pressure is higher than the safety threshold, the power battery thermal runaway monitoring module considers that a thermal runaway event occurs, wakes up a power battery management control module (3) and a vehicle control module (4), and sends the thermal runaway event to the power battery management control module (3) and the vehicle control module (4);
s2, after the power battery management control module (3) is awakened, if the whole vehicle is detected to be in a high-voltage power-on state, the high-voltage relay is controlled to be switched off; if the whole vehicle is detected to be in a high-voltage off state, controlling a high-voltage relay to maintain the off state; the temperature of the battery module is collected for the second time, and the collected temperature information is sent to the whole vehicle control module (4);
s3, the whole vehicle control module (4) carries out redundancy judgment according to the thermal runaway event fed back by the power battery thermal runaway monitoring module (2) and the temperature information fed back by the power battery management control module (3), and when the situation that the two information sources simultaneously represent the occurrence of the thermal runaway event of the power battery is judged, the situation that the thermal runaway event of the power battery really occurs is confirmed, the situation is awakened, and the state of the thermal runaway event of the power battery is sent to the vehicle body control module (5), the vehicle information display module (6) and the whole vehicle networking module (7);
s4, after the vehicle body control module (5) is awakened and the thermal runaway event state of the power battery from the whole vehicle control module (4) is confirmed to be received, controlling the vehicle to send alarm information;
s5, after the vehicle information display module (6) is awakened and confirms that the thermal runaway event state of the power battery from the whole vehicle control module (4) is received, controlling a vehicle instrument or a central control screen to prompt fault information;
s6, after the whole vehicle networking module (7) is awakened and the power battery thermal runaway event state from the whole vehicle control module (4) is confirmed to be received, data storage is carried out on information when the thermal runaway event occurs in the local SD card; the information is transmitted back to a vehicle background big data service module (8) through a network;
and S7, after receiving the thermal runaway event information from the whole vehicle networking module (7), the vehicle background big data service module (8) sends alarm information to a user and dials a fire-fighting alarm call.
10. The warning method for the thermal runaway of the power battery of the new energy automobile according to claim 9, wherein in the step S6, the information when the thermal runaway event occurs includes battery temperature, gas pressure in the battery pack, fault occurrence time, fault occurrence location, battery power when the fault occurs, ambient temperature when the fault occurs, and battery state information when the fault occurs.
11. The warning method for the thermal runaway of the power battery of the new energy automobile according to claim 9, wherein in the step S7, the mode that the vehicle background big data service module (8) sends warning information to the user includes pushing a short message to a user-registered mobile phone number and/or pushing an in-application message to a user-registered APP; the pushed information at least comprises a fault name, fault occurrence time, fault occurrence place and the like.
12. The warning method for the thermal runaway of the power battery of the new energy automobile according to claim 9, wherein in the step S7, the mode for the vehicle background big data service module (8) to make a fire alarm call is as follows: the method comprises the steps of firstly activating a vehicle snapshot function in a remote control mode, namely acquiring environment snapshots outside and inside a vehicle through a 360-degree look-around system camera outside the vehicle and an in-vehicle driving fatigue monitoring camera, and after the environment snapshots are quickly and comprehensively compared with uploaded thermal runaway event information, calling a fire alarm call.
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Application publication date: 20200211 |