CN112455283A - Battery thermal runaway processing method, device, equipment and storage medium - Google Patents
Battery thermal runaway processing method, device, equipment and storage medium Download PDFInfo
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- CN112455283A CN112455283A CN202011353574.9A CN202011353574A CN112455283A CN 112455283 A CN112455283 A CN 112455283A CN 202011353574 A CN202011353574 A CN 202011353574A CN 112455283 A CN112455283 A CN 112455283A
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- thermal runaway
- working condition
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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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- 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
- H01M2010/4278—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
- 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 belongs to the technical field of automobiles, and discloses a battery thermal runaway processing method, device, equipment and storage medium. The method comprises the following steps: judging whether a thermal runaway fault is reported when the vehicle is closed by a high-voltage relay; if the vehicle reports a thermal runaway fault when a high-voltage relay is engaged, judging whether the vehicle starts a cooling system or not; when the vehicle starts a cooling system, the high-voltage relay is prohibited from being closed, and whether the thermal runaway fault of the vehicle is relieved or not is judged in real time; and when the thermal runaway fault of the vehicle is relieved, the cooling system is closed and a preset alarm system is started. Because the corresponding battery thermal runaway processing strategy is adopted according to the state of the vehicle when the battery thermal runaway occurs, compared with the problem that the existing battery thermal runaway processing strategy is simple and single, the battery thermal runaway fault can be more effectively processed by the method.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a battery thermal runaway processing method, device, equipment and storage medium.
Background
The power battery is used as a core component of a vehicle, the safety of the vehicle is concerned, and for the battery, the maximum maintenance is thermal runaway of the battery, the thermal runaway of the battery can cause the battery to generate spontaneous combustion in serious cases, and after the thermal runaway of the battery reaches a certain temperature, an uncontrollable state can occur, the temperature inside the battery can rise linearly, and then the battery can be combusted and exploded.
In new energy vehicles, thermal runaway of batteries is one of the major failures that can cause vehicle fire and harm personal safety. When a thermal runaway fault occurs in a battery, various modes are adopted in the industry to detect and block the thermal runaway fault; however, the strategy of disposal after thermal runaway has occurred is different for each vehicle manufacturer.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a battery thermal runaway processing method, a device, equipment and a storage medium, and aims to solve the technical problems that in the prior art, a battery thermal runaway processing strategy is simple and single, and a corresponding processing strategy cannot be adopted according to a specific working condition.
In order to achieve the above object, the present invention provides a thermal runaway treatment method for a battery, comprising the steps of:
judging whether a thermal runaway fault is reported when the vehicle is closed by a high-voltage relay;
if the vehicle reports a thermal runaway fault when a high-voltage relay is engaged, judging whether the vehicle starts a cooling system or not;
when the vehicle starts a cooling system, the high-voltage relay is prohibited from being closed, and whether the thermal runaway fault of the vehicle is relieved or not is judged in real time;
and when the thermal runaway fault of the vehicle is relieved, the cooling system is closed and a preset alarm system is started.
Preferably, after the step of determining whether the thermal runaway fault has been reported when the vehicle is closed by the high-voltage relay, the method further includes:
acquiring the current working condition of the vehicle;
if the vehicle does not report the thermal runaway fault when the high-voltage relay is switched on and the current working condition is a power-on working condition, judging whether the battery temperature of the vehicle is greater than a preset temperature threshold value;
when the battery temperature of the vehicle is greater than a preset temperature threshold value, starting a cooling system of the vehicle, and starting a preset alarm system;
judging whether the thermal runaway fault of the vehicle is relieved or not in real time;
shutting down the cooling system when the thermal runaway fault of the vehicle is resolved.
Preferably, after the step of not reporting the thermal runaway fault when the vehicle is engaged by the high-voltage relay, the method further includes:
when the current working condition is a quick charging working condition or a slow charging working condition, sending a charging stopping instruction to charging equipment, disconnecting a charging relay, starting a cooling system of the vehicle, and starting a preset alarm system;
and when the current working condition is a discharging working condition, limiting the output power of the whole vehicle, starting a cooling system of the vehicle, and starting a preset alarm system.
Preferably, after the step of determining whether the vehicle starts the cooling system if the vehicle has reported the thermal runaway fault when the high-voltage relay is engaged, the method further includes:
when the cooling system is not started, acquiring the current working condition of the vehicle;
when the current working condition is a power-on working condition, controlling the high-voltage relay to be closed, and judging whether the battery temperature of the vehicle is greater than a preset temperature threshold value or not;
when the battery temperature of the vehicle is greater than a preset temperature threshold value, controlling a remote information processor to send a corresponding fault code to a target terminal;
and starting a cooling system of the vehicle and starting a preset alarm system.
Preferably, after the step of obtaining the current operating condition of the vehicle when the cooling system is not turned on, the method further includes:
when the current working condition is a discharging working condition, a quick charging working condition or a slow charging working condition, controlling the high-voltage relay to be attracted;
reducing the current of a charger of the vehicle to a preset current threshold value, and controlling the charger to enter a standby mode;
and starting a cooling system of the vehicle and starting a preset alarm system.
Preferably, after the step of acquiring the current operating condition of the vehicle, the method further includes:
when the current working condition is an awakening working condition, judging whether the vehicle has a thermal runaway fault through a lithium battery controller;
when the vehicle has a thermal runaway fault, judging whether a cooling system of the vehicle is started or not;
turning on a cooling system of the vehicle when the cooling system is not turned on.
Preferably, the step of turning on a cooling system of the vehicle and activating a preset warning system includes:
starting an air conditioner compressor and a water pump of the vehicle, and controlling the working time of the air conditioner compressor and the water pump to be greater than a preset time threshold value;
acquiring a danger level corresponding to the fault, and adopting a corresponding alarm strategy according to the danger level;
when the current working condition is a discharging working condition, a fast charging working condition or a slow charging working condition, a thermal runaway fault occurs, and a primary fault is reported to a target terminal;
and reporting a secondary fault to a target terminal when the vehicle has a thermal runaway fault and the battery temperature of the vehicle is greater than a preset threshold value.
In addition, in order to achieve the above object, the present invention further provides a battery thermal runaway processing apparatus, which includes a judgment module, a high voltage relay control module and a processing module;
the judging module is used for judging whether the thermal runaway fault is reported when the vehicle is actuated by the high-voltage relay;
the judging module is also used for judging whether the vehicle starts a cooling system or not if the thermal runaway fault is reported when the vehicle is in the high-voltage relay attraction state;
the high-voltage relay control module is used for forbidding the high-voltage relay to be closed when the cooling system of the vehicle is started, and judging whether the thermal runaway fault of the vehicle is relieved or not in real time;
and the processing module is used for closing the cooling system and starting a preset alarm system when the thermal runaway fault of the vehicle is relieved.
In addition, in order to achieve the above object, the present invention also provides a battery thermal runaway processing apparatus, including: the system comprises a memory, a processor and a battery thermal runaway processing program stored on the memory and operable on the processor, the battery thermal runaway processing program being configured to implement the steps of the battery thermal runaway processing method as described above.
In addition, in order to achieve the above object, the present invention further provides a storage medium, wherein the storage medium stores a battery thermal runaway processing program, and the battery thermal runaway processing program, when executed by a processor, implements the steps of the battery thermal runaway processing method as described above.
The method comprises the steps of judging whether a thermal runaway fault is reported when a vehicle is closed by a high-voltage relay; if the vehicle reports a thermal runaway fault when a high-voltage relay is engaged, judging whether the vehicle starts a cooling system or not; when the vehicle starts a cooling system, the high-voltage relay is prohibited from being closed, and whether the thermal runaway fault of the vehicle is relieved or not is judged in real time; and when the thermal runaway fault of the vehicle is relieved, the cooling system is closed and a preset alarm system is started. Because the corresponding battery thermal runaway processing strategy is adopted according to the state of the vehicle when the battery thermal runaway occurs, compared with the problem that the existing battery thermal runaway processing strategy is simple and single, the method can enable the battery thermal runaway processing to be more effective.
Drawings
FIG. 1 is a schematic diagram of a battery thermal runaway processing device in a hardware operating environment according to an embodiment of the invention;
FIG. 2 is a schematic flow chart of a battery thermal runaway processing method according to a first embodiment of the invention;
FIG. 3 is a schematic flow chart of a battery thermal runaway processing method according to a second embodiment of the invention;
FIG. 4 is a schematic flow chart of a battery thermal runaway processing method according to a third embodiment of the invention;
fig. 5 is a block diagram of a first embodiment of a thermal runaway processing apparatus for a battery according to the invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a battery thermal runaway processing device in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the battery thermal runaway processing apparatus may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a WIreless interface (e.g., a WIreless-FIdelity (WI-FI) interface). The Memory 1005 may be a Random Access Memory (RAM) Memory, or may be a Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of a battery thermal runaway processing apparatus and may include more or fewer components than shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, the memory 1005, which is a storage medium, may include therein an operating system, a data storage module, a network communication module, a user interface module, and a battery thermal runaway processing program.
In the battery thermal runaway processing apparatus shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 of the battery thermal runaway processing device according to the present invention may be disposed in the battery thermal runaway processing device, and the battery thermal runaway processing device invokes the battery thermal runaway processing program stored in the memory 1005 through the processor 1001 and executes the battery thermal runaway processing method according to the embodiment of the present invention.
Based on the above battery thermal runaway processing apparatus, an embodiment of the present invention provides a battery thermal runaway processing method, and with reference to fig. 2, fig. 2 is a schematic flow diagram of a first embodiment of the battery thermal runaway processing method according to the present invention.
In this embodiment, the battery thermal runaway processing method includes the following steps:
step S10: and judging whether the thermal runaway fault is reported when the vehicle is closed by the high-voltage relay.
It should be noted that the execution main body of the embodiment may be a computing service device with network communication and program operation, such as a battery thermal runaway processing device, a vehicle control unit, a driving computer, and the like. The present embodiment and the following embodiments will be described below by taking the vehicle control unit as an example.
It should be understood that the high-voltage relay is an electric appliance which makes a controlled amount undergo a predetermined step change in an electric output circuit when a change in an input amount of a high-voltage circuit meets a prescribed requirement, and the high-voltage relay is an electronic control device which has a control system and a controlled system, and is generally applied to an automatic control circuit.
In specific implementation, the vehicle control unit judges whether the vehicle receives the thermal runaway fault reported by the thermal runaway detection device when the high-voltage relay is closed, judges whether the current state of the vehicle is connected with the power battery or not according to the detection result, and further takes different countermeasures when the thermal runaway of the battery occurs.
Step S20: and if the vehicle reports the thermal runaway fault when the high-voltage relay is switched on, judging whether the vehicle starts a cooling system.
It should be noted that the cooling system may be a device or equipment with a cooling function configured on the vehicle, such as an air conditioner compressor, a water pump, and the like, and the embodiment is not limited herein. And if the reported thermal runaway fault of the vehicle when the high-voltage relay is switched on indicates that the thermal runaway fault of the vehicle is reported before the power system is started, judging whether the vehicle starts a cooling system.
In a specific implementation, the vehicle controller determines that the vehicle is before the high-voltage relay is closed, and if a thermal runaway fault reported by the thermal runaway detection device is received, further determines whether the vehicle has started a cooling system, and in a specific implementation, the cooling system may also be another device, equipment or method for processing the thermal runaway fault.
Step S30: and when the cooling system of the vehicle is started, the high-voltage relay is prohibited from being closed, and whether the thermal runaway fault of the vehicle is relieved or not is judged in real time.
It should be understood that when the cooling system of the vehicle is started, the high-voltage relay is prohibited to be closed, namely the power system is prohibited to be powered on, and the power battery and the power of other equipment are disconnected, so that the vehicle cannot be used when the vehicle is in fault, and meanwhile, the safety of a user is guaranteed.
In specific implementation, when the vehicle starts a cooling system, the vehicle control unit prohibits the high-voltage relay from closing, and judges whether the thermal runaway fault of the vehicle is relieved or not in real time.
Step S40: and when the thermal runaway fault of the vehicle is relieved, the cooling system is closed and a preset alarm system is started.
It should be understood that, when the thermal runaway fault of the vehicle is resolved, the reason of the thermal runaway fault needs to be detected to avoid the thermal runaway fault from occurring again, and after the cooling system is turned off again, the preset alarm system is started to report the fault to the preset target terminal to investigate the potential safety hazard.
In specific implementation, when the vehicle thermal runaway fault is relieved, the vehicle control unit closes the cooling system and starts a preset alarm system.
Further, the cooling system may be configured to start an air conditioner compressor and a water pump of the vehicle, and control the working time of the air conditioner compressor and the water pump to be greater than a preset time threshold;
the preset alarm system may acquire a danger level corresponding to the fault, and adopt a corresponding alarm strategy according to the danger level.
Further, the alarm strategy corresponding to the danger level can be 1 from low to high, a battery fault lamp is turned on (a charging indicator lamp is orange and flashes at 1.5 Hz), and the instrument displays that the instrument is required to be maintained in a 4S store; 2. illuminating a battery fault light; the instrument displays the danger of the vehicle and stops the vehicle by the side; 3. illuminating a battery fault light; and (3) displaying by an instrument: the vehicle is dangerous and stops alongside; opening a danger alarm lamp, alarming by a loudspeaker and unlocking four doors; the alarm policy may also be to report a corresponding fault code to a target terminal or a TBOX according to the risk level, and in a specific implementation, the alarm policy may also be in another manner, which is not limited herein.
The embodiment judges whether the thermal runaway fault is reported when the vehicle is closed by the high-voltage relay; if the vehicle reports a thermal runaway fault when a high-voltage relay is engaged, judging whether the vehicle starts a cooling system or not; when the vehicle starts a cooling system, the high-voltage relay is prohibited from being closed, and whether the thermal runaway fault of the vehicle is relieved or not is judged in real time; and when the thermal runaway fault of the vehicle is relieved, the cooling system is closed and a preset alarm system is started. Because the corresponding battery thermal runaway processing strategy is adopted according to the state of the vehicle when the battery thermal runaway occurs in the embodiment, compared with the problem that the existing battery thermal runaway processing strategy is simple and single, the method can enable the battery thermal runaway processing to be more effective.
Referring to fig. 3, fig. 3 is a schematic flow chart of a battery thermal runaway processing method according to a second embodiment of the invention.
Based on the first embodiment, in this embodiment, after step S10, the method further includes:
step S101: and acquiring the current working condition of the vehicle.
It should be noted that the current working condition may be a power-on working condition, a fast charging working condition, a slow charging working condition, a discharging working condition, an awakening working condition, and the like. The embodiment is not limited herein. The awakening refers to sensory perception reaction generated by stimulation of an individual, the awakening condition can be that a vehicle-mounted TBOX (Telematics BOX) remotely and periodically awakens and monitors a vehicle, and the vehicle-mounted TBOX is an important component of the current vehicle for realizing remote data service. Normally, when there is traffic data to be processed, the TBOX is in an operating state, and when there is no traffic data to be processed, the vehicle-mounted TBOX enters a low power consumption state to save energy. When new service data needs to be processed, the server remotely wakes up the vehicle-mounted TBOX to enable the vehicle-mounted TBOX to enter a normal working state and process the service data.
It should be understood that, in the embodiment, a corresponding thermal runaway processing strategy needs to be executed according to the current working condition of the vehicle, so as to achieve the purpose of efficiently processing the thermal runaway fault.
Step S102: and if the thermal runaway fault is not reported when the vehicle is switched on by the high-voltage relay, and the current working condition is a power-on working condition, judging whether the battery temperature of the vehicle is greater than a preset temperature threshold value.
It should be noted that the battery temperature may be a temperature of the power battery cell, the preset temperature threshold may be a temperature that can be adjusted to determine whether to execute a preset strategy,
in specific implementation, when the vehicle is not reported to the thermal runaway fault when the high-voltage relay is switched on and the current working condition is the power-on working condition, the vehicle control unit judges whether the battery temperature of the vehicle is greater than a preset temperature threshold value.
Step S103: and when the battery temperature of the vehicle is greater than a preset temperature threshold value, starting a cooling system of the vehicle and starting a preset alarm system.
It should be noted that, the starting preset alarm system may be that the lithium battery controller sends a corresponding fault code to the TBOX and/or the target terminal, lights a battery fault lamp, the instrument prompts that the vehicle is dangerous, the vehicle is parked by the side, the BCM (vehicle body controller) starts a dangerous alarm lamp and other prompt operations with warning effects such as whistling and vehicle unlocking, this embodiment is not limited here, and the cooling system of the vehicle is started to start the air conditioner compressor, water pump and the like of the vehicle.
Step S104: and judging whether the thermal runaway fault of the vehicle is removed or not in real time, and closing the cooling system when the thermal runaway fault of the vehicle is removed.
It should be noted that, after the cooling system of the vehicle is turned on for a period of time, the vehicle may recover to normal by itself, and therefore, it is necessary to detect whether the thermal runaway fault of the vehicle is resolved in real time, and in the specific implementation, a detection function may be implemented by using a device or an apparatus such as a sensor or a lithium battery controller.
In specific implementation, whether the thermal runaway fault of the vehicle is relieved or not is judged in real time, and when the detection equipment detects that the thermal runaway of the battery is relieved, the vehicle control unit closes the cooling system.
Further, if the vehicle does not report the thermal runaway fault when the high-voltage relay is switched on, the lithium battery controller detects the thermal runaway fault, and the current working condition is the fast charging working condition or the slow charging working condition, the vehicle controller sends a charging stop instruction to the charging equipment, disconnects the charging relay, starts the cooling system of the vehicle, and starts the preset alarm system, for example, when the current working condition is the fast charging working condition or the slow charging working condition, the vehicle does not report the thermal runaway fault when the high-voltage relay is switched on, and the lithium battery controller detects the thermal runaway fault, the vehicle controller sends a charging stop instruction or message to the charging pile, the delay time is a period of time which can be 10s or other preset time intervals, in this embodiment, the limit is not applied, the charging relay is disconnected, the air conditioner compressor is started for 4000r/min, the water pump is switched on, and the fault lamp of the battery is turned on, the gauge indicates a vehicle hazard. And sending corresponding fault codes to the TBOX and/or the target terminal. And detecting whether the real-time fault is removed or not in real time, closing the cooling system when the fault is removed, stopping charging or delaying power-off when the cooling time, namely the working time of an air conditioner compressor, a water pump and the like is less than a preset cooling time threshold value, and closing the cooling system and powering off the vehicle when the cooling time is controlled to be more than or equal to the preset threshold value.
Further, if the thermal runaway fault is not reported when the vehicle is switched on by the high-voltage relay, the lithium battery controller detects the thermal runaway fault, and when the current working condition is a discharging working condition, the output power of the whole vehicle is limited, the cooling system of the vehicle is started, the preset alarm system is started, and the working time of the cooling system is longer than the preset cooling time threshold.
In the embodiment, by acquiring the current working condition of the vehicle, if the thermal runaway fault is not reported when the vehicle is switched on by a high-voltage relay, and the current working condition is a power-on working condition, whether the battery temperature of the vehicle is greater than a preset temperature threshold value is judged; when the battery temperature of the vehicle is greater than a preset temperature threshold value, starting a cooling system of the vehicle, and starting a preset alarm system; judging whether the thermal runaway fault of the vehicle is relieved or not in real time; shutting down the cooling system when the thermal runaway fault of the vehicle is resolved. Correspondingly, the embodiment further describes a thermal runaway processing mode when the current working condition is a discharge working condition, a fast charge working condition or a slow charge working condition. In summary, in this embodiment, by obtaining the current working condition where the vehicle is located and adopting a corresponding thermal runaway processing strategy according to the current working condition, the thermal runaway fault of the battery can be more effectively processed.
Referring to fig. 4, fig. 4 is a schematic flow chart of a battery thermal runaway processing method according to a third embodiment of the invention.
Based on the foregoing embodiments, in this embodiment, after the step S20, the method further includes:
step S201: and when the cooling system is not started, acquiring the current working condition of the vehicle.
It should be noted that, the determining whether to start the cooling system of the vehicle may be to acquire cooling start flag bit information of the vehicle, and determine whether to start the cooling system of the vehicle according to the flag bit information.
It should be understood that the current working condition may be a power-on working condition, a fast-charging working condition, a slow-charging working condition, a discharging working condition, a wake-up working condition, and the like, and the wake-up working condition may be a remote wake-up working condition, a slow-charging wake-up working condition, a fast-charging wake-up working condition, a thermal instability wake-up working condition, and the like, which is not limited herein.
Step S202: and when the current working condition is a power-on working condition, controlling the high-voltage relay to be closed, and judging whether the battery temperature of the vehicle is greater than a preset temperature threshold value.
In specific implementation, when the current working condition is a power-on working condition, the vehicle control unit judges whether the battery temperature of the vehicle is greater than a preset temperature threshold value.
Step S203: and when the battery temperature of the vehicle is greater than a preset temperature threshold value, controlling a remote information processor to send a corresponding fault code to a target terminal, starting a cooling system of the vehicle, and starting a preset alarm system.
In the specific implementation, when the temperature of the battery of the vehicle is less than or equal to a preset temperature threshold value, the vehicle control unit lights a battery fault lamp, the instrument displays that the vehicle stops along the side, and the air-conditioning compressor and the water pump are started, so that the working time of the air-conditioning compressor and the water pump is greater than a preset cooling time threshold value. When the battery temperature of vehicle is greater than preset temperature threshold value, lithium battery controller sends corresponding fault code to TBOX and \ or target terminal, lights battery trouble lamp, and the instrument suggestion vehicle is dangerous, and the side parking leans on, BCM (automobile body controller) open dangerous alarm lamp and whistle, and control vehicle unblock etc. can also be other operations that can play the warning effect, and this embodiment does not add the restriction here.
Further, when the current working condition is a quick charging working condition or a slow charging working condition, the high-voltage relay is controlled to be attracted, the current of the charger is reduced to a preset current threshold value, the charger is controlled to enter a standby mode, the cooling system is started, the battery fault lamp is lightened, the instrument displays the danger of the vehicle, and the vehicle stops by the side.
Further, when the current working condition is a discharging working condition, the high-voltage relay is controlled to be closed, the current of the charger is reduced to a preset current threshold value, the charger is controlled to enter a standby mode, the cooling system is started, and the preset alarm system is started.
In this embodiment, after a thermal runaway fault is reported when a high-voltage relay is engaged with a vehicle, whether the vehicle starts a cooling system is judged, and when the vehicle does not start the cooling system, the current working condition of the vehicle is obtained, and when the current working condition is a power-on working condition, the high-voltage relay is controlled to be engaged with the vehicle, and whether the temperature of a battery of the vehicle is greater than a preset temperature threshold value is judged; when the battery temperature of the vehicle is greater than a preset temperature threshold value, controlling a remote information processor to send a corresponding fault code to a target terminal; and starting a cooling system of the vehicle and starting a preset alarm system. Correspondingly, when the current working condition is a discharging working condition, a fast charging working condition or a slow charging working condition, different thermal runaway processing strategies are adopted respectively, and the thermal runaway fault of the battery can be more effectively processed by acquiring the current working condition of the vehicle and adopting the corresponding thermal runaway processing strategy according to the current working condition.
Referring to fig. 5, fig. 5 is a block diagram illustrating a first embodiment of a thermal runaway processing apparatus for a battery according to the invention.
As shown in fig. 5, the apparatus for processing thermal runaway of battery according to the embodiment of the present invention includes a determining module 10, a high-voltage relay control module 30, and a processing module 40;
the judging module 10 is used for judging whether the thermal runaway fault is reported when the vehicle is closed by the high-voltage relay;
the judging module 10 is further configured to judge whether the vehicle starts a cooling system if a thermal runaway fault is reported when the vehicle is engaged with the high-voltage relay;
the high-voltage relay control module 30 is used for prohibiting the high-voltage relay from being closed when the cooling system of the vehicle is started, and judging whether the thermal runaway fault of the vehicle is relieved or not in real time;
and the processing module 40 is used for shutting down the cooling system and starting a preset alarm system when the thermal runaway fault of the vehicle is relieved.
The embodiment judges whether the thermal runaway fault is reported when the vehicle is closed by the high-voltage relay; if the vehicle reports a thermal runaway fault when a high-voltage relay is engaged, judging whether the vehicle starts a cooling system or not; when the vehicle starts a cooling system, the high-voltage relay is prohibited from being closed, and whether the thermal runaway fault of the vehicle is relieved or not is judged in real time; and when the thermal runaway fault of the vehicle is relieved, the cooling system is closed and a preset alarm system is started. Because the corresponding battery thermal runaway processing strategy is adopted according to the state of the vehicle when the battery thermal runaway occurs in the embodiment, compared with the problem that the existing battery thermal runaway processing strategy is simple and single, the method can enable the battery thermal runaway processing to be more effective.
Other embodiments or specific implementations of the battery thermal runaway processing apparatus of the present invention refer to the above method embodiments, and are not described herein again.
In addition, an embodiment of the present invention further provides a storage medium, where the storage medium stores a battery thermal runaway processing program, and the battery thermal runaway processing program, when executed by a processor, implements the steps of the battery thermal runaway processing method as described above.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., a rom/ram, a magnetic disk, an optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The battery thermal runaway processing method is characterized by comprising the following steps of:
judging whether a thermal runaway fault is reported when the vehicle is closed by a high-voltage relay;
if the vehicle reports a thermal runaway fault when a high-voltage relay is engaged, judging whether the vehicle starts a cooling system or not;
when the vehicle starts a cooling system, the high-voltage relay is prohibited from being closed, and whether the thermal runaway fault of the vehicle is relieved or not is judged in real time;
and when the thermal runaway fault of the vehicle is relieved, the cooling system is closed and a preset alarm system is started.
2. The battery thermal runaway processing method of claim 1, wherein after the step of determining whether a thermal runaway fault has been reported when the vehicle is engaged in the high-voltage relay, the method further comprises:
acquiring the current working condition of the vehicle;
if the vehicle does not report the thermal runaway fault when the high-voltage relay is switched on and the current working condition is a power-on working condition, judging whether the battery temperature of the vehicle is greater than a preset temperature threshold value;
when the battery temperature of the vehicle is greater than a preset temperature threshold value, starting a cooling system of the vehicle, and starting a preset alarm system;
judging whether the thermal runaway fault of the vehicle is relieved or not in real time;
shutting down the cooling system when the thermal runaway fault of the vehicle is resolved.
3. The battery thermal runaway processing method of claim 2, further comprising, after the step of not reporting a thermal runaway fault when the vehicle engages the high voltage relay:
when the current working condition is a quick charging working condition or a slow charging working condition, sending a charging stopping instruction to charging equipment, disconnecting a charging relay, starting a cooling system of the vehicle, and starting a preset alarm system;
and when the current working condition is a discharging working condition, limiting the output power of the whole vehicle, starting a cooling system of the vehicle, and starting a preset alarm system.
4. The battery thermal runaway processing method of claim 1, wherein after the step of determining whether the vehicle starts a cooling system if the thermal runaway fault has been reported when the vehicle engages a high voltage relay, the method further comprises:
when the cooling system is not started, acquiring the current working condition of the vehicle;
when the current working condition is a power-on working condition, controlling the high-voltage relay to be closed, and judging whether the battery temperature of the vehicle is greater than a preset temperature threshold value or not;
when the battery temperature of the vehicle is greater than a preset temperature threshold value, controlling a remote information processor to send a corresponding fault code to a target terminal;
and starting a cooling system of the vehicle and starting a preset alarm system.
5. The battery thermal runaway processing method of claim 4, wherein after the step of obtaining the current operating condition of the vehicle when the cooling system is not turned on, further comprising:
when the current working condition is a discharging working condition, a quick charging working condition or a slow charging working condition, controlling the high-voltage relay to be attracted;
reducing the current of a charger of the vehicle to a preset current threshold value, and controlling the charger to enter a standby mode;
and starting a cooling system of the vehicle and starting a preset alarm system.
6. The battery thermal runaway processing method of claim 2, wherein the step of obtaining the current operating condition of the vehicle is followed by further comprising:
when the current working condition is an awakening working condition, judging whether the vehicle has a thermal runaway fault through a lithium battery controller;
when the vehicle has a thermal runaway fault, judging whether a cooling system of the vehicle is started or not;
turning on a cooling system of the vehicle when the cooling system is not turned on.
7. The battery thermal runaway processing method of any one of claims 2 to 6, wherein the step of turning on a cooling system of the vehicle and activating a preset warning system comprises:
starting an air conditioner compressor and a water pump of the vehicle, and controlling the working time of the air conditioner compressor and the water pump to be greater than a preset time threshold value;
acquiring a danger level corresponding to the fault, and adopting a corresponding alarm strategy according to the danger level;
when the current working condition is a discharging working condition, a fast charging working condition or a slow charging working condition, a thermal runaway fault occurs, and a primary fault is reported to a target terminal;
and reporting a secondary fault to a target terminal when the vehicle has a thermal runaway fault and the battery temperature of the vehicle is greater than a preset threshold value.
8. The battery thermal runaway processing device is characterized by comprising a judgment module, a high-voltage relay control module and a processing module;
the judging module is used for judging whether the thermal runaway fault is reported when the vehicle is actuated by the high-voltage relay;
the judging module is also used for judging whether the vehicle starts a cooling system or not if the thermal runaway fault is reported when the vehicle is in the high-voltage relay attraction state;
the high-voltage relay control module is used for forbidding the high-voltage relay to be closed when the cooling system of the vehicle is started, and judging whether the thermal runaway fault of the vehicle is relieved or not in real time;
and the processing module is used for closing the cooling system and starting a preset alarm system when the thermal runaway fault of the vehicle is relieved.
9. A battery thermal runaway processing apparatus, the apparatus comprising: a memory, a processor, and a battery thermal runaway processing program stored on the memory and executable on the processor, the battery thermal runaway processing program configured to implement the steps of the battery thermal runaway processing method of any of claims 1-7.
10. A storage medium having a battery thermal runaway processing program stored thereon, which when executed by a processor, implements the steps of the battery thermal runaway processing method according to any one of claims 1 to 7.
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