CN112477687A - Thermal runaway early warning system for power storage battery of electric automobile - Google Patents
Thermal runaway early warning system for power storage battery of electric automobile Download PDFInfo
- Publication number
- CN112477687A CN112477687A CN201910859420.8A CN201910859420A CN112477687A CN 112477687 A CN112477687 A CN 112477687A CN 201910859420 A CN201910859420 A CN 201910859420A CN 112477687 A CN112477687 A CN 112477687A
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- Prior art keywords
- thermal runaway
- controller
- vehicle
- power storage
- storage battery
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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
-
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40267—Bus for use in transportation systems
- H04L2012/40273—Bus for use in transportation systems the transportation system being a vehicle
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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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to a thermal runaway early warning system for a power storage battery of an electric automobile, which actively reminds drivers and passengers and executes preset safety measures after the thermal runaway of the power storage battery of the automobile occurs, so that the safety problem of the drivers and passengers is solved. The system comprises a plurality of thermal runaway sensors, a thermal runaway controller, a whole vehicle controller, a remote information processor, a vehicle body controller and an instrument which are connected with a battery in parallel, wherein the battery provides constant electricity for each element; the signal output ends of the thermal runaway sensors are connected with the signal input end of the thermal runaway controller, the output end of the thermal runaway controller is in hard-wire connection with the input end of the whole vehicle controller, the thermal runaway controller, the whole vehicle controller and the remote information processor are in communication connection through CAN buses respectively, and the whole vehicle controller, the vehicle body controller and the instrument are in communication connection through the CAN buses respectively.
Description
Technical Field
The invention relates to battery safety monitoring, in particular to a thermal runaway early warning system for a power storage battery of an electric automobile.
Background
The power storage battery of the electric automobile mostly adopts a ternary lithium battery, and after the lithium battery is collided, leaked liquid, an insulating medium fails and the like, the lithium battery can be caused to be out of control thermally and burn rapidly, so that great threat is caused to personal safety of drivers and passengers. According to the thermal runaway test result of the lithium battery, the optimal escape time is provided for the driver and passengers within 5 minutes after the thermal runaway of the lithium battery, so that the stable and reliable thermal runaway early warning system for the power storage battery of the electric automobile is provided.
CN107702801A discloses a thermal runaway early warning device of a lithium ion battery based on temperature detection and a warning method thereof, which relate to a thermal runaway early warning device aiming at 18650 lithium ion battery in the charging and discharging process, and perform timely warning before the thermal runaway of the battery charging and discharging. The device comprises an infrared temperature sensor, a control part, an alarm device part, a data display device part and an auxiliary device part; the control part comprises a singlechip, an infrared temperature sensor pin interface and a single-point switch; the output end of the infrared temperature sensor is connected with a pin interface of the infrared temperature sensor; the pin interface of the infrared temperature sensor is connected with the singlechip through a signal wire; the alarm device part and the data display part are respectively connected with the control part; the auxiliary device part is respectively connected with the control part, the alarm device part and the data display device part. The method provides a safer charging and discharging environment for the charging and discharging process of the lithium ion battery, and performs early warning in time before the thermal runaway of the charging and discharging of the battery. This is, of course, a beneficial attempt in the art.
Disclosure of Invention
The invention aims to provide a thermal runaway early warning system for a power storage battery of an electric automobile, which can actively remind drivers and passengers and execute preset safety measures after the thermal runaway of the power storage battery of the automobile occurs, so that the safety problem of the drivers and passengers is solved.
The invention relates to a thermal runaway early warning system for a power storage battery of an electric automobile, which comprises a plurality of thermal runaway sensors, a thermal runaway controller, a whole automobile controller, a remote information processor, an automobile body controller and an instrument, wherein the thermal runaway sensors, the thermal runaway controller, the whole automobile controller, the remote information processor, the automobile body controller and the instrument are connected with a battery in parallel; the signal output ends of the thermal runaway sensors are connected with the signal input end of the thermal runaway controller, the output end of the thermal runaway controller is in hard-wire connection with the input end of the whole vehicle controller, the thermal runaway controller, the whole vehicle controller and the remote information processor are in communication connection through CAN buses respectively, and the whole vehicle controller, the vehicle body controller and the instrument are in communication connection through the CAN buses respectively.
Further, the thermal runaway sensor is of a sensor type such as temperature, smoke, gas and the like, and can output a corresponding analog signal and a high-level wake-up signal.
Further, the thermal runaway controller detects and judges the analog signal output by the thermal runaway sensor, outputs a high-level hard-wire wake-up signal to wake up the vehicle control unit when the thermal runaway signal is judged to be true, and simultaneously wakes up the vehicle control unit and the remote information processor through CAN communication and executes preset control logic.
Further, the vehicle control unit executes preset logic after receiving a hard-line wake-up signal or a CAN signal of the thermal runaway controller, and forwards related information to the vehicle body controller and the instrument.
Furthermore, after the remote information processor receives CAN information sent by the thermal runaway controller, the corresponding early warning information is pushed to the vehicle owner through a wireless network.
Further, after the vehicle body controller receives the CAN information of the vehicle control unit, the vehicle body controller executes the relevant emergency treatment measures for unlocking the vehicle door.
Further, after the instrument receives CAN information of the vehicle control unit, relevant measures such as early warning display and voice prompt are executed.
The invention has the beneficial effects that: when the thermal runaway occurs in the power storage battery of the electric automobile, the early warning system can quickly and effectively execute emergency danger avoiding measures and timely remind drivers and passengers to ensure the safety of the drivers and passengers.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure: 11-battery, 21-thermal runaway sensor, 31-vehicle controller, 41-vehicle controller, 42-remote information processor, 51-body controller, 52-instrument.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1, the thermal runaway early warning system for the power storage battery of the electric vehicle comprises a plurality of thermal runaway sensors 21, a thermal runaway controller 31, a vehicle control unit 41, a remote information processor 42, a vehicle body controller 51 and an instrument 52 which are connected with a battery 11 in parallel, wherein the battery is a lead-acid battery, the thermal runaway sensors 21 are used for omnibearing monitoring, and the battery provides normal electricity for each element; the signal output ends of the thermal runaway sensors 21 are connected with the signal input end of the thermal runaway controller 31, the output end of the thermal runaway controller 31 is in hard-wired connection with the input end of the vehicle controller 41, the thermal runaway controller 31, the vehicle controller 41 and the remote information processor 42 are in communication connection through CAN buses respectively, and the vehicle controller 41, the vehicle body controller 51 and the instrument 52 are in communication connection through CAN buses respectively.
When the whole vehicle is in a power-on (key ignition) state, all the thermal runaway sensors 21, the thermal runaway controller 31, the whole vehicle controller 41, the remote information processor 42, the vehicle body controller 51 and the instrument 52 are in working states; when the whole vehicle is in a power-off state (the key is not on fire), the thermal runaway sensor 21 is in a working state, and the thermal runaway controller, the 31 whole Vehicle Controller (VCU)41, the remote information processor 42, the vehicle body controller 51 and the meter 52 are in a standby state.
The thermal runaway sensor 21 is of a temperature sensor, a smoke sensor, a gas sensor or the like, and the thermal runaway sensor 21 can output a corresponding analog signal and a high-level wake-up signal. After the thermal runaway of the power storage battery occurs, the thermal runaway sensor 21 outputs a corresponding analog signal, and can output a high-level wake-up signal when a detection object (temperature, smoke concentration, gas and the like) reaches a preset threshold value;
the thermal runaway controller 31, after receiving the wake-up signal from the thermal runaway sensor 21, detects and determines the analog signal output by the thermal runaway sensor 21, and when it is determined that the thermal runaway signal is true, the thermal runaway controller 31 outputs a high-level hard-line wake-up signal to wake up the vehicle controller 41, and simultaneously wakes up the vehicle controller 41 and the telematics processor 42 through CAN communication, and executes a preset control logic, that is, executes a relevant emergency processing measure such as disconnecting a power battery high-voltage loop, and performs a corresponding emergency processing on a control object of the thermal runaway controller 31. After receiving the wake-up signal of the thermal runaway sensor 21, the thermal runaway controller 31 detects and determines the analog signal output by the thermal runaway sensor 21, executes a current-down process when determining that the thermal runaway signal is negative, and reenters the standby mode of the thermal runaway controller 31.
Further, after receiving the hard-line wake-up signal or the CAN signal of the thermal runaway controller 31, the vehicle control unit 51 executes a preset logic, and performs corresponding emergency processing on a control object of the vehicle control unit 41, that is, all the controllers of the vehicle are kept in a power-on wake-up state, and relevant information is forwarded to the vehicle body controller 51 and the instrument 52.
After receiving the CAN information sent by the thermal runaway controller 31, the telematics processor 42 pushes corresponding warning information to the vehicle owner through a wireless network.
After receiving the CAN information of the vehicle control unit 41, the vehicle body controller 51 executes a vehicle door unlocking related emergency treatment measure.
And the meter 52 executes relevant measures of early warning display and voice prompt after receiving the CAN information of the vehicle control unit 41.
Claims (7)
1. The thermal runaway early warning system for the power storage battery of the electric automobile is characterized by comprising a thermal runaway sensor (21), a thermal runaway controller (31), a whole vehicle controller (41), a remote information processor (42), a vehicle body controller (51) and an instrument (52) which are connected with a battery (11) in parallel, wherein the battery provides normal electricity for each element; the signal output ends of a plurality of thermal runaway sensors (21) are connected with the signal input end of a thermal runaway controller (31), the output end of the thermal runaway controller (31) is in hard-line connection with the input end of a whole vehicle controller (41), the thermal runaway controller (31), the whole vehicle controller (41) and a remote information processor (42) are in communication connection through a CAN bus respectively, and the whole vehicle controller (41), a vehicle body controller (51) and an instrument (52) are in communication connection with Changan new energy automobile science and technology company, Chongqing Changan, respectively, through the CAN bus.
2. The thermal runaway pre-warning system for the power storage battery of the electric automobile according to claim 1, wherein the thermal runaway sensor (21) is a temperature sensor, a smoke sensor and a gas sensor, and the thermal runaway sensor (21) is capable of outputting a corresponding analog signal and a high-level wake-up signal.
3. The thermal runaway early warning system of the power storage battery of the electric vehicle as claimed in claim 2, wherein the thermal runaway controller (31) detects and determines the analog signal output by the thermal runaway sensor (21), and when the thermal runaway signal is determined to be true, the thermal runaway controller (31) outputs a high-level hard-line wake-up signal to wake up the vehicle controller (41), and simultaneously wakes up the vehicle controller (41) and the remote information processor (42) through CAN communication and executes a preset control logic.
4. The thermal runaway pre-warning system for the power storage battery of the electric vehicle as claimed in claim 3, wherein the vehicle control unit (41) executes a preset logic after receiving a hard-line wake-up signal or a CAN signal of the thermal runaway controller (31), and forwards related information to the vehicle body controller (51) and the instrument (52).
5. The thermal runaway early warning system for the power storage battery of the electric vehicle as claimed in claim 3, wherein the telematics processor (42) is configured to push corresponding early warning information to a vehicle owner through a wireless network after receiving CAN information sent by the thermal runaway controller (31).
6. The thermal runaway early warning system for the power storage battery of the electric automobile according to claim 4, wherein the automobile body controller (51) executes emergency treatment measures related to door unlocking after receiving CAN information of the whole automobile controller (41).
7. The thermal runaway early warning system for the power storage battery of the electric automobile as claimed in claim 4, wherein the instrument (52) executes early warning display or voice prompt after receiving CAN information of the vehicle control unit (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910859420.8A CN112477687A (en) | 2019-09-11 | 2019-09-11 | Thermal runaway early warning system for power storage battery of electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910859420.8A CN112477687A (en) | 2019-09-11 | 2019-09-11 | Thermal runaway early warning system for power storage battery of electric automobile |
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| Publication Number | Publication Date |
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| CN112477687A true CN112477687A (en) | 2021-03-12 |
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| CN201910859420.8A Pending CN112477687A (en) | 2019-09-11 | 2019-09-11 | Thermal runaway early warning system for power storage battery of electric automobile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113043859A (en) * | 2021-05-12 | 2021-06-29 | 宝能(广州)汽车研究院有限公司 | Electric automobile awakening system, electric automobile and electric automobile awakening method |
| CN113119737A (en) * | 2021-04-28 | 2021-07-16 | 中国第一汽车股份有限公司 | Power battery thermal runaway monitoring device and method and power battery system |
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Application publication date: 20210312 |