CN116330980A - New energy automobile thermal runaway self-rescue system and new energy automobile comprising same - Google Patents
New energy automobile thermal runaway self-rescue system and new energy automobile comprising same Download PDFInfo
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- CN116330980A CN116330980A CN202310416425.XA CN202310416425A CN116330980A CN 116330980 A CN116330980 A CN 116330980A CN 202310416425 A CN202310416425 A CN 202310416425A CN 116330980 A CN116330980 A CN 116330980A
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- new energy
- power
- battery module
- thermal runaway
- module
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 43
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 43
- 238000001514 detection method Methods 0.000 claims abstract description 35
- 239000002253 acid Substances 0.000 claims abstract description 11
- 239000000835 fiber Substances 0.000 claims description 10
- 238000001745 non-dispersive infrared spectroscopy Methods 0.000 claims description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- 239000013307 optical fiber Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 239000003792 electrolyte Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000006467 substitution reaction 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
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a new energy automobile thermal runaway self-rescue system and a new energy automobile comprising the same, and relates to the field of new energy automobiles. This new energy automobile thermal runaway system of saving oneself includes: the power control module, the alarm module, the power lithium battery module, the low-voltage lead acid battery module, the power switching circuit, the detection sensor arranged inside the power lithium battery module, the detection sensor arranged outside the power lithium battery module and the battery management system connected with the components. The system can detect the gas, temperature, impedance and temperature and pressure outside the power battery module in real time, and analyze the thermal runaway condition inside the power battery module from multiple angles, so that the reliability and sensitivity of the thermal runaway early warning can be effectively improved, the battery can be detected in the middle-early stage of the occurrence of the thermal runaway, the battery problem can be detected before the occurrence of the thermal runaway, and the safety of the battery is effectively improved.
Description
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a new energy automobile thermal runaway self-rescue system and a new energy automobile comprising the same.
Background
At present, no matter a power battery or an energy storage battery is used in a large scale, and people still smell color changes for spontaneous combustion and explosion of the battery, so that the problem of battery safety is still an inexhaustible topic in the industry. Thermal runaway is a main object of safety improvement research of lithium ion batteries, and is a chain reaction phenomenon caused by various causes, a large amount of heat and harmful gas emitted by the thermal runaway can cause ignition and explosion of the batteries, the thermal runaway of the batteries often starts from decomposition of a negative electrode SEI film in battery cells, and then a diaphragm is decomposed and melted, so that the negative electrode reacts with electrolyte, and then both positive electrode and electrolyte are decomposed, so that large-scale internal short circuit is initiated, the electrolyte burns and further spreads to other cells, serious thermal runaway is caused, the whole battery pack generates spontaneous combustion, and once the thermal runaway occurs, the termination can only be that reactants are completely burnt out. A report from the fire department shows that for devices containing high energy in a closed housing such as lithium batteries, the fire control means temporarily cannot terminate the ongoing thermal runaway. Fire extinguishing agents do not actually reach the ongoing reactive materials. Firefighters have a high risk in fire but can take relatively limited measures, typically isolating the scene of an accident.
Chinese patent CN113602093a proposes a new energy automobile thermal runaway self-rescue system and a new energy automobile including the same, the system monitors the thermal runaway condition of a battery detected by a power battery pack through a battery monitoring unit, but only the moment when the voltage drop phenomenon is detected is the moment when the thermal runaway is irrecoverable, and the system is taken as a trigger signal of a cooling measure, and the system has lost meaning and can only be taken as alarm information of personnel evacuation, so that the battery thermal runaway early warning provided by the system has the problems of single data acquisition, unreliable alarm result and low alarm sensitivity.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a new energy automobile thermal runaway self-rescue system and a new energy automobile comprising the same, and solves the problems that the existing battery thermal runaway early warning has single data acquisition, unreliable alarm result and low alarm sensitivity.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: new energy automobile thermal runaway self-rescue system reaches new energy automobile including it includes: the power control system comprises a power control module, an alarm module, a power lithium battery module, a low-voltage lead acid battery module, a power supply switching circuit, a detection sensor arranged inside the power lithium battery module, a detection sensor arranged outside the power lithium battery module and a battery management system connected with the components, wherein the detection sensor arranged inside the power lithium battery module comprises an electrochemical impedance meter, an NDIR sensor and a Bragg optical fiber sensor, and the detection sensor arranged outside the power lithium battery module comprises a temperature detection module and a pressure detection module;
the electrochemical impedance meter is used for detecting the impedance of the battery in real time, the NDIR sensor is used for detecting carbon dioxide released before the thermal runaway triggering of the lithium battery, the Bragg optical fiber sensor is used for detecting the temperature inside the battery in real time, and the low-voltage lead acid battery module can supply power to a load in the new energy battery when the power lithium battery module stops supplying power on one hand, and can be connected to two sides of an electrode of the power lithium battery module to detect the internal short circuit condition of the power lithium battery module on the other hand.
Preferably, the temperature detection module is used for detecting the real-time temperature of the surface of each sub-battery in the power lithium battery module.
Preferably, the power control module is used for controlling the output power of the power lithium battery module and the transmission power of a motor in the new energy automobile, and the alarm module is used for controlling an instrument warning lamp in the carriage to give out warning sounds.
Preferably, the power supply switching circuit is used for switching the power supply output end of the low-voltage lead acid battery module.
Preferably, the pressure detection module is arranged between the power lithium battery module and the frame and is used for detecting the pressure transmitted to the power lithium battery module by the new energy electric car in real time.
Preferably, the battery management system is used for real-time and analysis of signals transmitted by the electrochemical impedance meter, the NDIR sensor, the bragg fiber sensor, the temperature detection module and the pressure detection module, so as to control the power control module to work.
Preferably, the fiber bragg sensor is configured as an embedded foldable fiber bragg sensor.
A new energy automobile adopts a new energy automobile thermal runaway self-rescue system.
(III) beneficial effects
The invention provides a thermal runaway self-rescue system of a new energy automobile and the new energy automobile comprising the same. The beneficial effects are as follows:
1. the system can detect the gas, temperature, impedance and temperature and pressure outside the power battery module in real time, and analyze the thermal runaway condition inside the power battery module from multiple angles, so that the reliability and sensitivity of the thermal runaway early warning can be effectively improved, the battery can be detected in the middle-early stage of the occurrence of the thermal runaway, the battery problem can be detected before the occurrence of the thermal runaway, and the safety of the battery is effectively improved.
2. The system is used for carrying out the power supply condition of the low-voltage lead acid battery module through the power supply switching circuit, so that on one hand, power can be supplied to the new energy automobile when the power battery module is out of control, and on the other hand, the short circuit condition of the power battery module can be detected before the power battery module is used for supplying power, and therefore the safety of the new energy automobile is effectively improved.
Drawings
Fig. 1 is a schematic diagram of the present 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.
Examples:
as shown in fig. 1, an embodiment of the present invention provides a thermal runaway self-rescue system for a new energy automobile, including: the power control module, the alarm module, power lithium battery module, low pressure plumbic acid battery module, power switching circuit, set up at the inside detection sensor of power lithium battery module, set up at the outside detection sensor of power lithium battery module and the battery management system who is connected with above-mentioned subassembly, the inside detection sensor of setting at power lithium battery module includes electrochemical impedance appearance, NDIR sensor and Bragg optical fiber sensor, the outside detection sensor of setting at power lithium battery module includes temperature detection module and pressure detection module.
The power control module is used for controlling the output power of the power lithium battery module and the transmission power of a motor in the new energy automobile, the alarm module is used for controlling an instrument warning lamp in a carriage to send out warning sound, the power supply switching circuit is used for switching the power supply output end of the low-voltage lead acid battery module, the battery management system is used for real-time and analysis of signals transmitted by the electrochemical impedance meter, the NDIR sensor, the Bragg fiber sensor, the temperature detection module and the pressure detection module, so that the power control module is controlled to work, and the Bragg fiber sensor is set to be an embedded foldable Bragg fiber sensor.
The electrochemical impedance meter is used for detecting the impedance of the battery in real time, the NDIR sensor is used for detecting the carbon dioxide released before the thermal runaway triggering of the lithium battery, and the Bragg fiber sensor is used for detecting the temperature inside the battery in real time.
The low-voltage lead acid battery module can supply power to the load in the new energy battery when the power lithium battery module stops supplying power on one hand, and can be connected to two sides of an electrode of the power lithium battery module to detect the internal short circuit condition of the power lithium battery module on the other hand.
The temperature detection module is used for detecting the real-time temperature of the surface of each sub-battery in the power lithium battery module, and the pressure detection module is arranged between the power lithium battery module and the frame and used for detecting the pressure transmitted to the power lithium battery module by the new energy electric car in real time.
The battery control system judges that the battery is overheated through signals transmitted by an electrochemical impedance meter, an NDIR sensor, a Bragg optical fiber sensor, a temperature detection module and a pressure detection module, then the output power of a motor is forcedly reduced through the power of the power control module, the vehicle speed is forcedly reduced, the vehicle is always in a speed-reducing running state, a driver is given enough time and opportunity to find a proper place to stop and cut off the power end supply of the vehicle, and an alarm module can send out forms such as an instrument warning lamp to light or send out a warning sound to remind the driver of paying attention to the condition of the vehicle and send the vehicle to a professional maintenance point for detection as soon as possible.
A new energy automobile adopts a new energy automobile thermal runaway self-rescue system.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. New energy automobile thermal runaway system of saving oneself, its characterized in that includes: the power control system comprises a power control module, an alarm module, a power lithium battery module, a low-voltage lead acid battery module, a power supply switching circuit, a detection sensor arranged inside the power lithium battery module, a detection sensor arranged outside the power lithium battery module and a battery management system connected with the components, wherein the detection sensor arranged inside the power lithium battery module comprises an electrochemical impedance meter, an NDIR sensor and a Bragg optical fiber sensor, and the detection sensor arranged outside the power lithium battery module comprises a temperature detection module and a pressure detection module;
the electrochemical impedance meter is used for detecting the impedance of the battery in real time, the NDIR sensor is used for detecting carbon dioxide released before the thermal runaway triggering of the lithium battery, the Bragg optical fiber sensor is used for detecting the temperature inside the battery in real time, and the low-voltage lead acid battery module can supply power to a load in the new energy battery when the power lithium battery module stops supplying power on one hand, and can be connected to two sides of an electrode of the power lithium battery module to detect the internal short circuit condition of the power lithium battery module on the other hand.
2. The new energy automobile thermal runaway self-rescue system of claim 1, wherein: the temperature detection module is used for detecting the real-time temperature of the surface of each sub-battery in the power lithium battery module.
3. The new energy automobile thermal runaway self-rescue system of claim 1, wherein: the power control module is used for controlling the output power of the power lithium battery module and the transmission power of a motor in the new energy automobile, and the alarm module is used for controlling an instrument warning lamp in the carriage to give out warning sounds.
4. The new energy automobile thermal runaway self-rescue system of claim 1, wherein: the power supply switching circuit is used for switching the power supply output end of the low-voltage lead acid battery module.
5. The new energy automobile thermal runaway self-rescue system of claim 1, wherein: the pressure detection module is arranged between the power lithium battery module and the frame and used for detecting the pressure transmitted to the power lithium battery module by the new energy electric car in real time.
6. The new energy automobile thermal runaway self-rescue system of claim 1, wherein: the battery management system is used for analyzing signals transmitted by the electrochemical impedance meter, the NDIR sensor, the Bragg fiber sensor, the temperature detection module and the pressure detection module in real time so as to control the power control module to work.
7. The new energy automobile thermal runaway self-rescue system of claim 1, wherein: the fiber Bragg sensor is configured as an embedded foldable fiber Bragg sensor.
8. The utility model provides a new energy automobile which characterized in that: a thermal runaway self-rescue system using the new energy automobile according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310416425.XA CN116330980A (en) | 2023-04-17 | 2023-04-17 | New energy automobile thermal runaway self-rescue system and new energy automobile comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310416425.XA CN116330980A (en) | 2023-04-17 | 2023-04-17 | New energy automobile thermal runaway self-rescue system and new energy automobile comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116330980A true CN116330980A (en) | 2023-06-27 |
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ID=86878860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310416425.XA Pending CN116330980A (en) | 2023-04-17 | 2023-04-17 | New energy automobile thermal runaway self-rescue system and new energy automobile comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116330980A (en) |
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2023
- 2023-04-17 CN CN202310416425.XA patent/CN116330980A/en active Pending
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