WO2020220512A1 - 电池热失控的检测方法、装置、系统和电池管理单元 - Google Patents

电池热失控的检测方法、装置、系统和电池管理单元 Download PDF

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Publication number
WO2020220512A1
WO2020220512A1 PCT/CN2019/100445 CN2019100445W WO2020220512A1 WO 2020220512 A1 WO2020220512 A1 WO 2020220512A1 CN 2019100445 W CN2019100445 W CN 2019100445W WO 2020220512 A1 WO2020220512 A1 WO 2020220512A1
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Prior art keywords
battery pack
threshold
predetermined
air pressure
pressure sensor
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PCT/CN2019/100445
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English (en)
French (fr)
Inventor
王潇
曾超
许佳
但志敏
侯贻真
张伟
胡国亮
Original Assignee
宁德时代新能源科技股份有限公司
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Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to EP19926818.6A priority Critical patent/EP3800725B1/en
Publication of WO2020220512A1 publication Critical patent/WO2020220512A1/zh
Priority to US17/130,972 priority patent/US20210111443A1/en

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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
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • 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
    • 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
    • H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • 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
    • 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
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • 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
    • H01M10/4285—Testing apparatus
    • 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
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • 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
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • 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
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • 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
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/488—Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/545—Temperature
    • 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
    • B60L2250/00—Driver interactions
    • B60L2250/10—Driver interactions by alarm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
    • 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
    • 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

Definitions

  • This application relates to the field of battery technology, and in particular to a method, device, system and battery management unit for detecting battery thermal runaway.
  • the power battery will inevitably heat up after work, and the battery is controllable under normal conditions, but under abnormal conditions (such as collisions and/or overcharging, etc.) it will get out of control. Once thermal runaway occurs, high temperature and rapid formation will occur. Destructive power, may burn through the upper cover of the battery box and cause fire, thereby endangering the personal safety of passengers and causing great safety accidents. With the requirements of the market, the energy density of power batteries continues to increase, and the market has higher and higher demands for battery safety. Therefore, real-time monitoring and warning of whether the power battery has thermal runaway is necessary.
  • the flexible printed circuit board Flexible Printed Circuit Board; hereinafter referred to as FPC
  • FPC Flexible Printed Circuit Board
  • CSC Cell Supervision Circuit
  • BMU Battery Management Unit
  • BMS Battery Management System
  • the embodiments of the present application provide a method, device, system and battery management unit for detecting battery thermal runaway, so as to combine the parameter information of the air pressure sensor and the battery pack to detect the thermal runaway of the battery pack and improve the battery pack thermal runaway detection Reliability, reduce the probability of false alarms and false alarms, and improve driving safety.
  • an embodiment of the present application provides a method for detecting battery thermal runaway, including: acquiring an output signal of an air pressure sensor provided in a battery pack, and acquiring parameter information of the battery pack; The output signal determines the state information of the air pressure sensor; and according to the state information of the air pressure sensor and the parameter information of the battery pack, an alarm signal of thermal runaway of the battery pack is generated.
  • the method further includes: sending an alarm signal for thermal runaway of the battery pack to a vehicle equipped with the battery pack. Car controller.
  • the obtaining the output signal of the air pressure sensor provided in the battery pack includes: obtaining the air pressure sensor provided in the battery pack when the battery management unit of the battery pack is in a normal working state
  • determining the state information of the air pressure sensor includes: when the output voltage of the air pressure sensor is less than a predetermined first voltage threshold, determining that the air pressure sensor is in a normal state Working state; when the output voltage of the air pressure sensor is greater than or equal to the predetermined first voltage threshold, it is determined that the air pressure sensor is in the air pressure alarm state; when the output voltage of the air pressure sensor is in the predetermined fault voltage range, it is determined that The air pressure sensor is in a fault state.
  • the obtaining the output signal of the air pressure sensor provided in the battery pack includes: when the battery management unit of the battery pack is in a sleep state, obtaining the output signal of the air pressure sensor provided in the battery pack Logic signal; said determining the state information of the air pressure sensor according to the output signal of the air pressure sensor includes: when the logic signal is a high level signal, the battery management unit of the battery pack is removed from the sleep state After waking up, it is determined that the air pressure sensor is in an air pressure alarm state.
  • the generating an alarm signal for thermal runaway of the battery pack based on the state information of the air pressure sensor and the parameter information of the battery pack includes: when the air pressure sensor is in an air pressure alarm state If any one or more of the fault conditions in the parameter information of the battery pack is met within the predetermined detection time period, an alarm signal indicating that the battery pack has thermal runaway is generated; in the parameter information of the battery pack
  • the fault conditions include:
  • the time period during which the maximum temperature of the battery pack single cells is greater than a predetermined temperature threshold exceeds the first time length threshold
  • the time period during which the temperature increase rate of the battery cell's single cells is greater than a predetermined increase rate threshold value exceeds the second time period threshold value
  • the time period during which the difference between the maximum temperature and the minimum temperature of the battery cell single cells is greater than a predetermined difference threshold exceeds a third time threshold
  • the time period during which the lowest voltage of the battery pack monomer cells is less than the predetermined second voltage threshold exceeds the fourth time threshold
  • the number of voltage sampling open circuit faults of the battery pack is greater than or equal to a predetermined number of faults threshold
  • the temperature sensor in the same module of the battery pack is completely invalid
  • the generating an alarm signal of thermal runaway of the battery pack based on the state information of the air pressure sensor and the parameter information of the battery pack includes: when the air pressure sensor is in normal operation In the state or the fault state, if any one or more of the fault conditions in the parameter information of the battery pack is met, an alarm signal of thermal runaway of the battery pack is generated; the fault condition in the parameter information of the battery pack include:
  • the time period during which the lowest voltage of the battery pack cell is less than the predetermined second voltage threshold exceeds the fourth time period threshold, and the maximum temperature of the battery pack cell is greater than the predetermined temperature threshold The duration of exceeds the first duration threshold
  • the time period during which the lowest voltage of the battery pack cell is less than the predetermined second voltage threshold exceeds the fourth time period threshold, and the temperature rise rate of the battery pack cell cell over time The duration greater than the predetermined increase rate threshold exceeds the second duration threshold;
  • the time period during which the minimum voltage of the battery pack cell is less than the predetermined second voltage threshold exceeds the fourth time period threshold, and the difference between the maximum temperature and the minimum temperature of the battery pack cell The time period whose value is greater than the predetermined difference threshold exceeds the third time period threshold;
  • the time period during which the temperature increase rate of the battery pack single cells is greater than the predetermined increase rate threshold exceeds the second time length threshold, and the maximum temperature of the battery pack single cells The duration greater than the predetermined temperature threshold exceeds the first duration threshold;
  • the time period during which the temperature increase rate of the battery pack single cells is greater than the predetermined increase rate threshold exceeds the second time length threshold, and the maximum temperature of the battery pack single cells The time period during which the difference from the lowest temperature is greater than the predetermined difference threshold exceeds the third time threshold;
  • the number of voltage sampling open circuit failures of the battery pack is greater than or equal to a predetermined number of failures threshold, and the maximum temperature of the battery pack's single cells is greater than the predetermined temperature threshold for a period of time that exceeds the first period of time;
  • the number of voltage sampling and open circuit failures of the battery pack is greater than or equal to a predetermined number of failures threshold, and the time period during which the temperature rise rate of the single cells of the battery pack is greater than the predetermined rise rate threshold value exceeds the second time period threshold value ;
  • the number of voltage sampling and open circuit failures of the battery pack is greater than or equal to a predetermined number of failures threshold, and the difference between the highest temperature and the lowest temperature of the battery pack single cells is greater than a predetermined difference threshold for a duration that exceeds a third duration threshold ;
  • the number of voltage sampling open circuit failures of the battery pack is greater than or equal to a predetermined number of failures threshold, and the temperature sensor in the same module of the battery pack is completely invalid;
  • the state of charge of the battery pack cells satisfies the following state, and the duration is greater than or equal to a predetermined time period: the maximum voltage of the battery pack cell cells is greater than a predetermined third voltage threshold, and the battery pack cell The true value of the state of charge of the battery cell is greater than a predetermined threshold, and the charging current of the battery pack single cell is greater than or equal to the predetermined charging current threshold.
  • an embodiment of the present application provides a battery thermal runaway detection device, including: an acquisition module configured to acquire an output signal of an air pressure sensor provided in a battery pack and acquire parameter information of the battery pack; a determination module , Used to determine the state information of the air pressure sensor according to the output signal of the air pressure sensor acquired by the acquisition module; generating module, used to determine the state information of the air pressure sensor according to the state information of the air pressure sensor and the parameter information of the battery pack acquired by the acquisition module , Generating an alarm signal for thermal runaway of the battery pack.
  • the device further includes: a sending module, configured to send an alarm signal of thermal runaway of the battery pack after the generating module generates an alarm signal of thermal runaway of the battery pack To the vehicle controller of the vehicle loaded with the battery pack.
  • a sending module configured to send an alarm signal of thermal runaway of the battery pack after the generating module generates an alarm signal of thermal runaway of the battery pack To the vehicle controller of the vehicle loaded with the battery pack.
  • the acquiring module is specifically configured to acquire the output voltage of the air pressure sensor provided in the battery pack when the battery management unit of the battery pack is in a normal working state;
  • the determining module is specifically configured to determine that the air pressure sensor is in a normal working state when the output voltage of the air pressure sensor is less than a predetermined first voltage threshold; when the output voltage of the air pressure sensor is greater than or equal to a predetermined first voltage threshold When a voltage threshold is reached, it is determined that the air pressure sensor is in an air pressure alarm state; when the output voltage of the air pressure sensor is within a predetermined fault voltage range, it is determined that the air pressure sensor is in a fault state.
  • the acquisition module is specifically configured to acquire the logic signal output by the air pressure sensor provided in the battery pack when the battery management unit of the battery pack is in a sleep state;
  • the determining module is specifically configured to determine that the air pressure sensor is in the air pressure alarm state after the battery management unit of the battery pack is awakened from the sleep state when the logic signal is a high level signal.
  • the generating module is specifically configured to, when the air pressure sensor is in the air pressure alarm state, within a predetermined detection time period, if any one of the fault conditions in the parameter information of the battery pack or If multiples are met, an alarm signal indicating that the battery pack has thermal runaway is generated; the fault condition in the parameter information of the battery pack includes:
  • the time period during which the maximum temperature of the battery pack single cells is greater than a predetermined temperature threshold exceeds the first time length threshold
  • the time period during which the temperature increase rate of the battery cell's single cells is greater than a predetermined increase rate threshold value exceeds the second time period threshold value
  • the time period during which the difference between the maximum temperature and the minimum temperature of the battery cell single cells is greater than a predetermined difference threshold exceeds a third time threshold
  • the time period during which the lowest voltage of the battery pack monomer cells is less than the predetermined second voltage threshold exceeds the fourth time threshold
  • the number of voltage sampling open circuit faults of the battery pack is greater than or equal to a predetermined number of faults threshold
  • the temperature sensor in the same module of the battery pack is completely invalid
  • the generating module is specifically used for when the air pressure sensor is in a normal working state or a fault state, if any one or more of the fault conditions in the parameter information of the battery pack is If satisfied, an alarm signal for thermal runaway of the battery pack is generated;
  • the fault condition in the parameter information of the battery pack includes:
  • the time period during which the lowest voltage of the battery pack cell is less than the predetermined second voltage threshold exceeds the fourth time period threshold, and the maximum temperature of the battery pack cell is greater than the predetermined temperature threshold The duration of exceeds the first duration threshold
  • the time period during which the lowest voltage of the battery pack cell is less than the predetermined second voltage threshold exceeds the fourth time period threshold, and the temperature rise rate of the battery pack cell cell over time The duration greater than the predetermined increase rate threshold exceeds the second duration threshold;
  • the time period during which the minimum voltage of the battery pack cell is less than the predetermined second voltage threshold exceeds the fourth time period threshold, and the difference between the maximum temperature and the minimum temperature of the battery pack cell The time period whose value is greater than the predetermined difference threshold exceeds the third time period threshold;
  • the time period during which the temperature increase rate of the battery pack single cells is greater than the predetermined increase rate threshold exceeds the second time length threshold, and the maximum temperature of the battery pack single cells The duration greater than the predetermined temperature threshold exceeds the first duration threshold;
  • the time period during which the temperature increase rate of the battery pack single cells is greater than the predetermined increase rate threshold exceeds the second time length threshold, and the maximum temperature of the battery pack single cells The time period during which the difference from the lowest temperature is greater than the predetermined difference threshold exceeds the third time threshold;
  • the number of voltage sampling open circuit failures of the battery pack is greater than or equal to a predetermined number of failures threshold, and the maximum temperature of the battery pack's single cells is greater than the predetermined temperature threshold for a period of time that exceeds the first period of time;
  • the number of voltage sampling and open circuit failures of the battery pack is greater than or equal to a predetermined number of failures threshold, and the time period during which the temperature rise rate of the single cells of the battery pack is greater than the predetermined rise rate threshold value exceeds the second time period threshold value ;
  • the number of voltage sampling and open circuit failures of the battery pack is greater than or equal to a predetermined number of failures threshold, and the difference between the highest temperature and the lowest temperature of the battery pack single cells is greater than a predetermined difference threshold for a duration that exceeds a third duration threshold ;
  • the number of voltage sampling open circuit failures of the battery pack is greater than or equal to a predetermined number of failures threshold, and the temperature sensor in the same module of the battery pack is completely invalid;
  • the state of charge of the single battery cell satisfies the following state, and the duration is greater than or equal to a predetermined time period: the maximum voltage of the battery pack single cell is greater than a predetermined third voltage threshold, and the battery pack single cell The true value of the state of charge of the battery pack is greater than a predetermined threshold, and the charging current of the battery pack cell is greater than or equal to the predetermined charging current threshold.
  • an embodiment of the present application provides a battery management unit, including a memory, a processor, and a computer program stored on the memory and capable of running on the processor.
  • a battery management unit including a memory, a processor, and a computer program stored on the memory and capable of running on the processor.
  • the processor executes the computer program, , To achieve the method described above.
  • an embodiment of the present application provides a battery thermal runaway detection system, which includes an air pressure sensor arranged in a battery pack and the battery management unit described above.
  • an embodiment of the present application provides a non-transitory computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the method described above is implemented.
  • the output signal of the air pressure sensor provided in the battery pack is obtained, and after the parameter information of the battery pack is obtained, the state information of the air pressure sensor is determined according to the output signal of the air pressure sensor, and finally according to the air pressure sensor
  • the status information and the parameter information of the above-mentioned battery pack generate an alarm signal that the above-mentioned battery pack has thermal runaway, so that the combination of the air pressure sensor and the parameter information of the battery pack can detect the thermal runaway of the battery pack and improve the detection of thermal runaway of the battery pack. Reliability, reduce the probability of false alarms and false alarms, and improve driving safety.
  • FIG. 1 is a flowchart of an embodiment of a method for detecting battery thermal runaway according to the present application
  • FIG. 2 is a flowchart of another embodiment of a method for detecting battery thermal runaway according to the present application
  • FIG. 3 is a flowchart of another embodiment of the method for detecting battery thermal runaway according to the present application.
  • FIG. 4 is a circuit topology diagram of the air pressure sensor in the method for detecting battery thermal runaway according to the application;
  • Fig. 5 is a flowchart of another embodiment of a method for detecting battery thermal runaway according to the present application.
  • FIG. 6 is a schematic diagram of an embodiment of an alarm strategy for thermal runaway in a method for detecting battery thermal runaway according to the application;
  • FIG. 7 is a schematic diagram of another embodiment of an alarm strategy for thermal runaway in the method for detecting battery thermal runaway according to the application;
  • FIG. 8 is a schematic structural diagram of an embodiment of a detection device for battery thermal runaway according to this application.
  • FIG. 9 is a schematic structural diagram of another embodiment of a detection device for battery thermal runaway according to the present application.
  • FIG. 10 is a schematic structural diagram of an embodiment of a battery management unit of this application.
  • FIG. 11 is a schematic structural diagram of an embodiment of a detection system for battery thermal runaway according to the present application.
  • FIG. 1 is a flowchart of an embodiment of a method for detecting battery thermal runaway according to this application.
  • the method for detecting battery thermal runaway provided in this embodiment can be executed by a BMU.
  • the above-mentioned detection method for battery thermal runaway may include:
  • Step 101 Obtain the output signal of the air pressure sensor provided in the battery pack, and obtain the parameter information of the above-mentioned battery pack.
  • the battery pack is composed of multiple single cells.
  • the air pressure sensor can be set in the battery pack. Simulation and experimental results show that when the single cells in the battery pack are thermally out of control, the battery pack The air pressure at each position in the (Pack) is evenly distributed, so the above-mentioned air pressure sensor can be arranged at any position in the battery pack (Pack).
  • the above-mentioned air pressure sensor may be a dual-channel air pressure sensor, of course, other types of air pressure sensors may also be used, which is not limited in this embodiment.
  • Step 102 Determine the state information of the air pressure sensor according to the output signal of the air pressure sensor.
  • Step 103 Generate an alarm signal for thermal runaway of the battery pack based on the state information of the air pressure sensor and the parameter information of the battery pack.
  • the output signal of the air pressure sensor provided in the battery pack is obtained, and after the parameter information of the battery pack is obtained, the state information of the air pressure sensor is determined according to the output signal of the air pressure sensor, and finally according to The state information of the above-mentioned air pressure sensor and the parameter information of the above-mentioned battery pack generate an alarm signal that the battery pack is thermally out of control, so as to realize the combination of the air-pressure sensor and the parameter information of the battery pack to detect the thermal runaway of the battery pack and improve the battery pack.
  • the reliability of thermal runaway detection reduces the probability of false alarms and false alarms, and improves driving safety.
  • Fig. 2 is a flowchart of another embodiment of a method for detecting battery thermal runaway according to this application. As shown in Fig. 2, in the embodiment shown in Fig. 1 of this application, after step 103, it may further include:
  • Step 201 Send an alarm signal of the thermal runaway of the battery pack to a vehicle control unit (Vehicle Control Unit; hereinafter referred to as VCU) of the vehicle loaded with the battery pack.
  • VCU Vehicle Control Unit
  • the above warning signal can be sent to the VCU of the vehicle loaded with the battery pack, and then the VCU will deal with the fault of the thermal runaway of the battery pack according to a preset strategy , Such as: sound and light alarm, etc.
  • FIG. 3 is a flowchart of another embodiment of a method for detecting battery thermal runaway according to this application. As shown in FIG. 3, in the embodiment shown in FIG. 1 of this application, step 101 may be:
  • Step 301 When the BMU of the aforementioned battery pack is in a normal working state, obtain the output voltage of the air pressure sensor provided in the battery pack.
  • FIG. 4 is a circuit topology diagram of the air pressure sensor in the method for detecting battery thermal runaway according to the present application, and the Sensor module in FIG. 4 is the air pressure sensor.
  • the air pressure sensor when the BMU is working normally, the air pressure sensor is in the normal working state, V1_T is powered on, the transistor is turned on, and the Application Specific Integrated Circuits (hereinafter referred to as ASIC) starts to work, and the low-power dedicated integrated circuit The circuit (Low Power ASIC) does not work, and the output signal of the air pressure sensor is the real-time output voltage value Vout at this time.
  • the voltage value of V1_T can be set according to system performance and/or implementation requirements during specific implementation. This embodiment does not limit the voltage value of V1_T.
  • the voltage value of V1_T can be 12.0V. .
  • step 102 may be:
  • Step 302 When the output voltage of the air pressure sensor is less than a predetermined first voltage threshold, determine that the air pressure sensor is in a normal working state; when the output voltage of the air pressure sensor is greater than or equal to a predetermined first voltage threshold, determine that The air pressure sensor is in an air pressure alarm state; when the output voltage of the air pressure sensor is within a predetermined fault voltage range, it is determined that the air pressure sensor is in a fault state.
  • the predetermined first voltage threshold may be set according to system performance and/or implementation requirements during specific implementation. This embodiment does not limit the size of the predetermined first voltage threshold; similarly, the predetermined failure
  • the voltage range can also be set according to system performance and/or implementation requirements during specific implementation. This embodiment does not limit the foregoing predetermined fault voltage range.
  • the foregoing predetermined fault voltage range may be 0 to 0.2 V and 4.8 ⁇ 5V.
  • the air pressure sensor has a self-diagnosis function under normal working conditions. Once the output voltage value of the air pressure sensor is within the predetermined fault voltage range ( That is, within 0 ⁇ 0.2V&4.8 ⁇ 5V), it is determined that the above-mentioned air pressure sensor is in a fault state; and the air pressure sensor does not have a diagnostic function in a low power consumption working state.
  • the air pressure sensor detects the air pressure in the Pack, considering that the difference in the external atmospheric pressure in different regions may cause the air pressure sensor to send out an air pressure warning signal incorrectly, a potentiometer can be added to the air pressure sensor, and it can be obtained under normal conditions.
  • the external air pressure value real-time calibrates the air pressure alarm threshold in the Pack.
  • FIG. 5 is a flowchart of another embodiment of a method for detecting battery thermal runaway according to this application. As shown in FIG. 5, in the embodiment shown in FIG. 1 of this application, step 101 may be:
  • step 501 when the BMU of the above-mentioned battery pack is in a sleep state, a logic signal output by the air pressure sensor arranged in the battery pack is obtained.
  • the foregoing logic signal may be a Transistor-Transistor Logic (hereinafter referred to as TTL) signal.
  • TTL Transistor-Transistor Logic
  • the barometric pressure sensor when the BMU is in the dormant state, the barometric pressure sensor is in a low-power working state, V1_T is powered off, the transistor is not conducting, so the ASIC does not work, and the normal V2_Standby is powered by lead-acid power, and the Low Power ASIC works.
  • the air pressure sensor outputs a TTL signal through the comparator.
  • the voltage value of V2_Standby can be set according to system performance and/or implementation requirements during specific implementation. This embodiment does not limit the voltage value of V2_Standby.
  • the voltage value of V2_Standby can be 5.0V. .
  • step 102 may be:
  • step 502 when the logic signal is a high level signal, after the BMU of the battery pack is awakened from the sleep state, it is determined that the air pressure sensor is in the air pressure alarm state.
  • the air pressure sensor when the BMU of the aforementioned battery pack is in the dormant state, under normal circumstances, the air pressure sensor outputs a low-level signal. At this time, the working state of the BMU will not change, and the BMU is still in the dormant state; and when the air pressure sensor outputs high When the level signal is applied, the BMU of the battery pack is awakened from the sleep state and starts to work, and it is determined that the air pressure sensor is in the air pressure alarm state.
  • the air pressure sensor can monitor the thermal runaway of the battery pack in a low power consumption state, so that the air pressure sensor can continue to work with electricity, so that the thermal runaway detection is still possible even when the vehicle is stopped and powered off. With alarm function.
  • step 103 may be:
  • the air pressure sensor When the air pressure sensor is in the air pressure alarm state, within the predetermined detection time, if any one or more of the fault conditions in the parameter information of the battery pack is met, an alarm signal that the battery pack is thermally out of control is generated; the battery
  • the fault conditions in the parameter information of the package include:
  • the time period during which the maximum temperature of the battery pack cell is greater than the predetermined temperature threshold exceeds the first time threshold
  • the time period during which the temperature increase rate of the battery cell single cells of the battery pack is greater than the predetermined increase rate threshold value exceeds the second time period threshold value
  • the length of time when the difference between the maximum temperature and the minimum temperature of the cell of the battery pack is greater than the predetermined difference threshold exceeds the third time threshold
  • the time period during which the minimum voltage of the battery cell single cell is less than the predetermined second voltage threshold exceeds the fourth time threshold
  • the number of voltage sampling open circuit failures of the battery pack is greater than or equal to a predetermined number of failures threshold
  • the temperature sensor in the same module of the above battery pack is completely invalid
  • the aforementioned predetermined detection duration can be set according to system performance and/or implementation requirements during specific implementation. This embodiment does not limit the length of the aforementioned predetermined detection duration.
  • the aforementioned predetermined detection duration can be For 10 minutes;
  • the size of the foregoing predetermined temperature threshold may be set during specific implementation according to system performance and/or implementation requirements. This embodiment does not limit the size of the foregoing predetermined temperature threshold.
  • the foregoing predetermined temperature threshold may be Is 68.4°C;
  • the foregoing first duration threshold may be set according to system performance and/or implementation requirements during specific implementation. This embodiment does not limit the length of the foregoing first duration threshold.
  • the foregoing first duration threshold may be 2. second;
  • the temperature increase rate of the above-mentioned single battery cell over time is dT/dt.
  • the above-mentioned predetermined increase rate threshold can be set according to the system performance and/or implementation requirements when it is implemented.
  • the size of the rising rate threshold is not limited.
  • the predetermined rising rate threshold mentioned above may be 3°C/s;
  • the foregoing second duration threshold may be set by itself during specific implementation according to system performance and/or implementation requirements. This embodiment does not limit the length of the foregoing second duration threshold.
  • the foregoing second duration threshold may be the same as the first
  • the first duration threshold is equal or unequal, which is not limited in this embodiment.
  • the second duration threshold is equal to the first duration threshold as an example.
  • the second duration threshold may be 2 seconds;
  • the foregoing predetermined difference threshold may be set according to system performance and/or implementation requirements during specific implementation. This embodiment does not limit the size of the foregoing predetermined difference threshold.
  • the foregoing predetermined difference threshold It can be 30°C;
  • the foregoing third duration threshold may be set by itself during specific implementation according to system performance and/or implementation requirements. This embodiment does not limit the length of the foregoing third duration threshold.
  • the foregoing third duration threshold may be the same as the first The first duration threshold is equal or unequal, and can be equal or unequal to the second duration threshold. This embodiment does not limit this.
  • This embodiment takes the third duration threshold and the first duration threshold and the second duration threshold as an example. Note that the third duration threshold can be 2 seconds;
  • the foregoing predetermined second voltage threshold value can be set by itself according to system performance and/or implementation requirements during specific implementation. This embodiment does not limit the size of the foregoing predetermined second voltage threshold value.
  • the foregoing predetermined second voltage threshold can be 2.0V;
  • the foregoing fourth duration threshold can be set according to system performance and/or implementation requirements during specific implementation. This embodiment does not limit the length of the foregoing fourth duration threshold.
  • the foregoing fourth duration threshold may be the same as the first The first duration threshold, the second duration threshold, and the third duration threshold are equal or unequal. This embodiment does not limit this.
  • the fourth duration threshold is different from the first duration threshold, the second duration threshold, and the third duration threshold.
  • the fourth duration threshold may be 300 milliseconds;
  • the foregoing predetermined threshold for the number of failures can be set during specific implementation according to system performance and/or implementation requirements. This embodiment does not limit the size of the foregoing predetermined threshold for the number of failures.
  • the foregoing predetermined threshold for the number of failures Can be 1.
  • Figure 6 is an embodiment of the thermal runaway warning strategy in the battery thermal runaway detection method of the application Schematic diagram.
  • Tmax is the highest temperature of the above-mentioned single cell
  • dT/dt is the rate of increase in the temperature of the above-mentioned single cell with time
  • Tmin is the lowest temperature of the above-mentioned single cell
  • Vmin is the above-mentioned single cell.
  • a negative temperature coefficient thermistor (Negative Temperature Coefficient; hereinafter referred to as: NTC) is a temperature sensor.
  • step 103 may be:
  • the above-mentioned air pressure sensor When the above-mentioned air pressure sensor is in a normal working state or a faulty state, if any one or more of the fault conditions in the parameter information of the above-mentioned battery pack is met, an alarm signal of thermal runaway of the above-mentioned battery pack is generated; the parameters of the above-mentioned battery pack
  • the fault conditions in the message include:
  • the time period during which the minimum voltage of the battery pack cell is less than the predetermined second voltage threshold exceeds the fourth time period threshold, and the maximum temperature of the battery pack cell cell is greater than the predetermined temperature threshold.
  • the minimum voltage of the battery pack cell is less than the predetermined second voltage threshold for a period of time that exceeds the fourth time threshold, and the temperature of the battery pack cell is increased with time greater than the predetermined The duration of the rising rate threshold exceeds the second duration threshold;
  • the time period during which the minimum voltage of the battery cell is less than the predetermined second voltage threshold exceeds the fourth time threshold, and the difference between the maximum temperature and the minimum temperature of the battery cell is greater than The duration of the predetermined difference threshold exceeds the third duration threshold;
  • the time period during which the temperature increase rate of the battery pack cell cells over time is greater than the predetermined increase rate threshold exceeds the second time length threshold, and the maximum temperature of the battery pack cell cells is greater than the predetermined
  • the duration of the temperature threshold exceeds the first duration threshold
  • the time period during which the temperature increase rate of the battery pack cell cells over time is greater than the predetermined increase rate threshold exceeds the second time length threshold, and the highest temperature and the lowest temperature of the battery pack cell cells
  • the duration of the temperature difference being greater than the predetermined difference threshold exceeds the third duration threshold
  • the number of voltage sampling open-circuit failures of the battery pack is greater than or equal to a predetermined number of failures threshold, and the maximum temperature of the battery pack single cell is greater than the predetermined temperature threshold for a period of time that exceeds the first period threshold;
  • the number of voltage sampling open circuit failures of the battery pack is greater than or equal to a predetermined number of failures threshold, and the time period during which the temperature increase rate of the battery cell's single cells is greater than the predetermined increase rate threshold exceeds the second time period threshold;
  • the number of voltage sampling open-circuit failures of the battery pack is greater than or equal to a predetermined number of failures threshold, and the difference between the highest temperature and the lowest temperature of the battery pack single cells is greater than the predetermined difference threshold for a duration that exceeds the third duration threshold;
  • the number of voltage sampling open circuit failures of the battery pack is greater than or equal to a predetermined number of failures threshold, and the temperature sensor in the same module of the battery pack is completely invalid;
  • the state of charge of the battery pack cells satisfies the following conditions, and the duration is greater than or equal to the predetermined time period: the maximum voltage of the battery pack cell cells is greater than a predetermined third voltage threshold, and the battery pack cell cells are The true value of the state of charge is greater than a predetermined threshold, and the charging current of the battery pack cell is greater than or equal to the predetermined charging current threshold; that is, when the above-mentioned air pressure sensor is in a normal working state or a fault state, and the above-mentioned If the battery pack parameter information meets the fault conditions in the charging state, an alarm signal for thermal runaway of the above battery pack is generated.
  • the thermal runaway alarm signal here is an early warning signal for the impending thermal runaway of the battery pack, so that the battery pack can be overrun. It has the function of early warning, and corresponding measures can be taken in advance to avoid thermal runaway and further improve the safety of the battery pack.
  • the aforementioned predetermined duration can be set by itself according to system performance and/or implementation requirements during specific implementation.
  • This embodiment does not limit the length of the aforementioned predetermined duration.
  • the aforementioned predetermined duration may be 5 seconds;
  • the third voltage threshold can be set according to system performance and/or implementation requirements during specific implementation.
  • This embodiment does not limit the size of the foregoing predetermined third voltage threshold.
  • the foregoing predetermined third voltage The threshold can be 1.1 ⁇ three-level overvoltage; the true value of the state of charge (State of Charge; hereinafter referred to as SOC) of the above battery pack is TRD_SOC, and the above predetermined threshold can be implemented according to system performance and/or implementation The requirements, etc. are set by themselves.
  • This embodiment does not limit the size of the foregoing predetermined threshold.
  • the foregoing predetermined threshold may be 115%; the foregoing predetermined charging current threshold may be implemented according to system performance and/or implementation requirements. It can be set by itself, and this embodiment does not limit the size of the foregoing predetermined charging current threshold.
  • the foregoing predetermined charging current threshold may be 0.33C.
  • Figure 7 is the thermal runaway alarm in the battery thermal runaway detection method of the application Schematic diagram of another embodiment of the strategy.
  • the complete loss of CSC communication is used as a single trigger condition to trigger the thermal runaway alarm. Considering that when thermal runaway occurs, it is very likely to destroy the communication function of the CSC, so the complete loss of CSC communication is used as a The single trigger condition makes the reliability of the trigger condition lower and the false alarm rate of thermal runaway is higher.
  • the alarm strategy shown in Figure 6 of this application is an alarm strategy for the BMU to detect the thermal runaway of the battery cell after the air pressure sensor is added.
  • the trigger condition of the complete loss of CSC communication with a higher false alarm rate is combined with the air pressure alarm state of the air pressure sensor.
  • the air pressure alarm status of the air pressure sensor also needs to be combined with other conditions such as voltage and temperature.
  • the alarm strategy shown in Figure 7 of this application is to remove the trigger condition of complete loss of CSC communication with a higher false alarm rate when the above-mentioned air pressure sensor is in a normal working state or a fault state, thereby greatly increasing the above-mentioned alarm strategy Reliability.
  • this condition is reached at the same time in 10 minutes to prevent the characterization of the condition when the cell thermal runaway under low SOC is not very severe, which makes the time to reach the alarm condition relatively long.
  • FIG. 8 is a schematic structural diagram of an embodiment of a detection device for battery thermal runaway according to this application.
  • the above-mentioned battery thermal runaway detection device can be used as a BMU or a part of a BMU to implement the battery thermal runaway detection method provided by the embodiment of the present application.
  • the above-mentioned detection device for battery thermal runaway may include: an acquisition module 81, a determination module 82, and a generation module 83;
  • the obtaining module 81 is used to obtain the output signal of the air pressure sensor set in the battery pack and obtain the parameter information of the above battery pack; in this embodiment, the battery pack is composed of multiple single cells, and the air pressure sensor can be set In the battery pack, through simulation and experimental results, it is found that when the single cell is thermally out of control, the air pressure at each position in the battery pack (Pack) is evenly distributed, so the above-mentioned air pressure sensor can be arranged in the battery pack (Pack) Any position of.
  • the above-mentioned air pressure sensor may be a dual-channel air pressure sensor, of course, other types of air pressure sensors may also be used, which is not limited in this embodiment.
  • the determining module 82 is configured to determine the state information of the air pressure sensor according to the output signal of the air pressure sensor acquired by the acquiring module 81;
  • the generating module 83 is configured to generate an alarm signal for thermal runaway of the battery pack based on the state information of the air pressure sensor and the parameter information of the battery pack.
  • the acquiring module 81 acquires the output signal of the air pressure sensor provided in the battery pack, and after acquiring the parameter information of the battery pack, the determining module 82 determines the air pressure sensor according to the output signal of the air pressure sensor. Finally, the generating module 83 generates an alarm signal for thermal runaway of the battery pack based on the status information of the air pressure sensor and the parameter information of the battery pack, so that the air pressure sensor and the parameter information of the battery pack can be combined to control the battery pack. Perform thermal runaway detection to improve the reliability of battery pack thermal runaway detection, reduce the probability of false alarms and false alarms, and improve driving safety.
  • Fig. 9 is a schematic structural diagram of another embodiment of a battery thermal runaway detection device of the present application. Compared with the battery thermal runaway detection device shown in Fig. 8, the difference is that the battery thermal runaway detection device shown in Fig. 9 It can also include:
  • the sending module 84 is configured to send the warning signal of thermal runaway of the battery pack to the VCU of the vehicle loaded with the battery pack after the generating module 83 generates the warning signal of thermal runaway of the battery pack.
  • the sending module 84 may send the warning signal to the VCU of the vehicle loaded with the battery pack, and then the VCU will generate heat on the battery pack according to a preset strategy. Deal with out-of-control faults, such as sound and light alarms.
  • the acquiring module 81 is specifically configured to acquire the output voltage of the air pressure sensor provided in the battery pack when the battery management unit of the battery pack is in a normal working state; the Sensor in FIG. 4
  • the module is the air pressure sensor.
  • V1_T when the BMU is working normally, the air pressure sensor is in the normal working state, V1_T is powered on, the transistor is turned on, and the ASIC starts to work, but the Low Power ASIC does not work.
  • the signal is the real-time output voltage value Vout.
  • the voltage value of V1_T can be set according to system performance and/or implementation requirements during specific implementation. This embodiment does not limit the voltage value of V1_T.
  • the voltage value of V1_T can be 12.0V. .
  • the determining module 82 is specifically configured to determine that the air pressure sensor is in a normal working state when the output voltage of the air pressure sensor is less than a predetermined first voltage threshold; when the output voltage of the air pressure sensor is greater than or equal to the predetermined first voltage threshold , It is determined that the air pressure sensor is in an air pressure alarm state; when the output voltage of the air pressure sensor is within a predetermined fault voltage range, it is determined that the air pressure sensor is in a fault state.
  • the predetermined first voltage threshold may be set according to system performance and/or implementation requirements during specific implementation. This embodiment does not limit the size of the predetermined first voltage threshold; similarly, the predetermined failure
  • the voltage range can also be set according to system performance and/or implementation requirements during specific implementation. This embodiment does not limit the foregoing predetermined fault voltage range.
  • the foregoing predetermined fault voltage range may be 0 to 0.2 V and 4.8 ⁇ 5V.
  • the air pressure sensor has a self-diagnosis function under normal working conditions. Once the output voltage value of the air pressure sensor is within the predetermined fault voltage range ( That is, within 0 ⁇ 0.2V&4.8 ⁇ 5V), the determination module 82 determines that the above-mentioned air pressure sensor is in a fault state; and the air pressure sensor does not have a diagnostic function in a low power consumption working state.
  • the air pressure sensor detects the air pressure in the Pack, considering that the difference in the external atmospheric pressure in different regions may cause the air pressure sensor to send out an air pressure warning signal incorrectly, a potentiometer can be added to the air pressure sensor, and it can be obtained under normal conditions.
  • the external air pressure value real-time calibrates the air pressure alarm threshold in the Pack.
  • the acquiring module 81 is specifically configured to acquire the logic signal output by the air pressure sensor provided in the battery pack when the BMU of the battery pack is in a sleep state; wherein, the logic signal may be TTL signal.
  • the barometric pressure sensor when the BMU is in the dormant state, the barometric pressure sensor is in a low-power working state, V1_T is powered off, the transistor is not conducting, so the ASIC does not work, and the normal V2_Standby is powered by lead-acid power, and the Low Power ASIC works.
  • the air pressure sensor outputs a TTL signal through the comparator.
  • the voltage value of V2_Standby can be set according to system performance and/or implementation requirements during specific implementation. This embodiment does not limit the voltage value of V2_Standby.
  • the voltage value of V2_Standby can be 5.0V. .
  • the determining module 82 is specifically configured to determine that the air pressure sensor is in the air pressure alarm state after the BMU of the battery pack is awakened from the sleep state when the logic signal is a high level signal.
  • the air pressure sensor when the BMU of the aforementioned battery pack is in the dormant state, under normal circumstances, the air pressure sensor outputs a low-level signal. At this time, the working state of the BMU will not change, and the BMU is still in the dormant state; and when the air pressure sensor outputs high When the level signal, the BMU of the battery pack is awakened from the sleep state and starts to work, and the determination module 82 determines that the air pressure sensor is in the air pressure alarm state.
  • the air pressure sensor can monitor the thermal runaway of the battery pack in a low power consumption state, so that the air pressure sensor can continue to work with electricity, so that the thermal runaway detection is still possible even when the vehicle is stopped and powered off. With alarm function.
  • the generating module 83 is specifically configured to, when the above-mentioned air pressure sensor is in the air pressure alarm state, within a predetermined detection time period, if any one or more of the fault conditions in the parameter information of the above-mentioned battery pack is satisfied, then Generate an alarm signal for thermal runaway of the battery pack; the fault conditions in the parameter information of the battery pack include:
  • the time period during which the maximum temperature of the battery pack cell is greater than the predetermined temperature threshold exceeds the first time threshold
  • the time period during which the temperature increase rate of the battery cell single cells of the battery pack is greater than the predetermined increase rate threshold value exceeds the second time period threshold value
  • the length of time when the difference between the maximum temperature and the minimum temperature of the cell of the battery pack is greater than the predetermined difference threshold exceeds the third time threshold
  • the time period during which the minimum voltage of the battery cell single cell is less than the predetermined second voltage threshold exceeds the fourth time threshold
  • the number of voltage sampling open circuit failures of the battery pack is greater than or equal to a predetermined number of failures threshold
  • the temperature sensor in the same module of the above battery pack is completely invalid
  • the aforementioned predetermined detection duration can be set according to system performance and/or implementation requirements during specific implementation. This embodiment does not limit the length of the aforementioned predetermined detection duration.
  • the aforementioned predetermined detection duration can be For 10 minutes;
  • the size of the foregoing predetermined temperature threshold may be set during specific implementation according to system performance and/or implementation requirements. This embodiment does not limit the size of the foregoing predetermined temperature threshold.
  • the foregoing predetermined temperature threshold may be Is 68.4°C;
  • the foregoing first duration threshold may be set according to system performance and/or implementation requirements during specific implementation. This embodiment does not limit the length of the foregoing first duration threshold.
  • the foregoing first duration threshold may be 2. second;
  • the temperature increase rate of the above-mentioned single battery cell over time is dT/dt.
  • the above-mentioned predetermined increase rate threshold can be set according to the system performance and/or implementation requirements when it is implemented.
  • the size of the rising rate threshold is not limited.
  • the predetermined rising rate threshold mentioned above may be 3°C/s;
  • the foregoing second duration threshold may be set by itself during specific implementation according to system performance and/or implementation requirements. This embodiment does not limit the length of the foregoing second duration threshold.
  • the foregoing second duration threshold may be the same as the first
  • the first duration threshold is equal or unequal, which is not limited in this embodiment.
  • the second duration threshold is equal to the first duration threshold as an example.
  • the second duration threshold may be 2 seconds;
  • the foregoing predetermined difference threshold may be set according to system performance and/or implementation requirements during specific implementation. This embodiment does not limit the size of the foregoing predetermined difference threshold.
  • the foregoing predetermined difference threshold It can be 30°C;
  • the foregoing third duration threshold may be set by itself during specific implementation according to system performance and/or implementation requirements. This embodiment does not limit the length of the foregoing third duration threshold.
  • the foregoing third duration threshold may be the same as the first The first duration threshold is equal or unequal, and can be equal or unequal to the second duration threshold. This embodiment does not limit this.
  • This embodiment takes the third duration threshold and the first duration threshold and the second duration threshold as an example. Note that the third duration threshold can be 2 seconds;
  • the foregoing predetermined second voltage threshold value can be set by itself according to system performance and/or implementation requirements during specific implementation. This embodiment does not limit the size of the foregoing predetermined second voltage threshold value.
  • the foregoing predetermined second voltage threshold can be 2.0V;
  • the foregoing fourth duration threshold can be set according to system performance and/or implementation requirements during specific implementation. This embodiment does not limit the length of the foregoing fourth duration threshold.
  • the foregoing fourth duration threshold may be the same as the first The first duration threshold, the second duration threshold, and the third duration threshold are equal or unequal. This embodiment does not limit this.
  • the fourth duration threshold is different from the first duration threshold, the second duration threshold, and the third duration threshold.
  • the fourth duration threshold may be 300 milliseconds;
  • the foregoing predetermined threshold for the number of failures can be set during specific implementation according to system performance and/or implementation requirements. This embodiment does not limit the size of the foregoing predetermined threshold for the number of failures.
  • the foregoing predetermined threshold for the number of failures Can be 1.
  • the generating module 83 When the above-mentioned air pressure sensor is in an air pressure alarm state, the generating module 83 generates the above-mentioned strategy for the alarm signal of thermal runaway of the battery pack as shown in FIG. 6.
  • Tmax is the highest temperature of the above-mentioned single cell
  • dT/dt is the rate of increase in the temperature of the above-mentioned single cell with time
  • Tmin is the lowest temperature of the above-mentioned single cell
  • Vmin is the above-mentioned single cell.
  • the lowest voltage of the core, NTC is the temperature sensor.
  • the generating module 83 is specifically configured to generate the above-mentioned air pressure sensor if any one or more of the fault conditions in the parameter information of the above-mentioned battery pack is satisfied when the above-mentioned air pressure sensor is in a normal working state or a fault condition.
  • the battery pack has an alarm signal for thermal runaway; the fault conditions in the parameter information of the battery pack include:
  • the time period during which the minimum voltage of the battery pack cell is less than the predetermined second voltage threshold exceeds the fourth time period threshold, and the maximum temperature of the battery pack cell cell is greater than the predetermined temperature threshold.
  • the minimum voltage of the battery pack cell is less than the predetermined second voltage threshold for a period of time that exceeds the fourth time threshold, and the temperature of the battery pack cell is increased with time greater than the predetermined The duration of the rising rate threshold exceeds the second duration threshold;
  • the time period during which the minimum voltage of the battery cell is less than the predetermined second voltage threshold exceeds the fourth time threshold, and the difference between the maximum temperature and the minimum temperature of the battery cell is greater than The duration of the predetermined difference threshold exceeds the third duration threshold;
  • the time period during which the temperature increase rate of the battery pack single cells is greater than the predetermined increase rate threshold exceeds the second time length threshold, and the maximum temperature of the single cells is greater than the predetermined temperature
  • the duration of the threshold exceeds the first duration threshold
  • the time period during which the temperature increase rate of the battery pack cell cells over time is greater than the predetermined increase rate threshold exceeds the second time length threshold, and the highest temperature and the lowest temperature of the battery pack cell cells
  • the duration of the temperature difference being greater than the predetermined difference threshold exceeds the third duration threshold
  • the number of voltage sampling open-circuit faults of the battery pack single cells is greater than or equal to a predetermined number of faults threshold, and the maximum temperature of the battery pack single cells is greater than the predetermined temperature threshold for a duration that exceeds the first duration threshold;
  • the number of voltage sampling open circuit failures of the battery pack is greater than or equal to a predetermined number of failures threshold, and the time period during which the temperature increase rate of the battery cell's single cells is greater than the predetermined increase rate threshold exceeds the second time period threshold;
  • the number of voltage sampling open-circuit failures of the battery pack is greater than or equal to a predetermined number of failures threshold, and the duration of the difference between the highest temperature and the lowest temperature of the battery pack's single cells is greater than the predetermined difference threshold exceeds the third duration threshold;
  • the number of voltage sampling open circuit failures of the battery pack is greater than or equal to a predetermined number of failures threshold, and the temperature sensor in the same module of the battery pack is completely invalid;
  • the state of charge of the battery pack cells satisfies the following conditions, and the duration is greater than or equal to the predetermined time period: the maximum voltage of the battery pack cell cells is greater than a predetermined third voltage threshold, and the battery pack cell cells are The true value of the state of charge is greater than a predetermined threshold, and the charging current of the battery pack cell is greater than or equal to the predetermined charging current threshold; that is, when the above-mentioned air pressure sensor is in a normal working state or a fault state, and the above-mentioned If the battery pack parameter information meets the fault conditions in the charging state, an alarm signal for thermal runaway of the above battery pack is generated.
  • the thermal runaway alarm signal here is an early warning signal for the impending thermal runaway of the battery pack, so that the battery pack can be overrun. It has the function of early warning, and corresponding measures can be taken in advance to avoid thermal runaway and further improve the safety of the battery pack.
  • the aforementioned predetermined duration can be set by itself according to system performance and/or implementation requirements during specific implementation.
  • This embodiment does not limit the length of the aforementioned predetermined duration.
  • the aforementioned predetermined duration may be 5 seconds;
  • the third voltage threshold can be set according to system performance and/or implementation requirements during specific implementation.
  • This embodiment does not limit the size of the foregoing predetermined third voltage threshold.
  • the foregoing predetermined third voltage The threshold can be 1.1 ⁇ three-level overvoltage; the true value of the SOC of the above battery pack is TRD_SOC, and the above predetermined threshold can be set according to system performance and/or implementation requirements during specific implementation.
  • the size of the threshold is not limited.
  • the predetermined threshold may be 115%; the predetermined charging current threshold may be set according to system performance and/or implementation requirements during specific implementation.
  • the size of the charging current threshold is not limited.
  • the aforementioned predetermined charging current threshold may be 0.33C.
  • the generating module 83 When the above-mentioned air pressure sensor is in a normal working state or a faulty state, the generating module 83 generates the above-mentioned strategy for the alarm signal of thermal runaway of the battery pack as shown in FIG. 7.
  • the complete loss of CSC communication is used as a single trigger condition to trigger the thermal runaway alarm. Considering that when thermal runaway occurs, it is very likely to destroy the CSC communication function, so the complete loss of CSC communication is used as The single trigger condition makes the reliability of the trigger condition lower and the false alarm rate of thermal runaway is higher.
  • the alarm strategy shown in Figure 6 of this application is a strategy in which the generation module 83 generates a thermal runaway alarm signal after the air pressure sensor is added.
  • the trigger condition of the complete loss of CSC communication with a higher false alarm rate is related to the air pressure alarm state of the air pressure sensor.
  • the air pressure alarm status of the air pressure sensor also needs to be combined with other conditions such as voltage and temperature.
  • the alarm strategy shown in Figure 7 of this application is to remove the trigger condition of complete loss of CSC communication with a higher false alarm rate when the above-mentioned air pressure sensor is in a normal working state or a fault state, thereby greatly increasing the above-mentioned alarm strategy Reliability.
  • this condition is reached at the same time in 10 minutes to prevent the characterization of the condition when the cell thermal runaway under low SOC is not very severe, which makes the time to reach the alarm condition relatively long.
  • FIG. 10 is a schematic structural diagram of an embodiment of a battery management unit of this application.
  • the above-mentioned BMU includes a memory, a processor, and a computer program stored on the above-mentioned memory and running on the above-mentioned processor.
  • the above-mentioned processor executes the above-mentioned computer program, The method for detecting battery thermal runaway provided in the embodiments of the present application is realized.
  • Fig. 10 shows a block diagram of an exemplary BMU suitable for implementing the embodiments of the present application.
  • the BMU shown in FIG. 10 is only an example, and should not bring any limitation to the function and scope of use of the embodiments of the present application.
  • BMU is represented in the form of a general-purpose computing device.
  • the components of the BMU may include, but are not limited to: one or more processors 410, a memory 430, and a communication bus 440 connecting different system components (including the memory 430 and the processing unit 410).
  • the communication bus 440 represents one or more of several types of bus structures, including a memory bus or a memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using any bus structure among multiple bus structures.
  • these architectures include but are not limited to Controller Area Network (hereinafter referred to as CAN) bus, Industry Standard Architecture (hereinafter referred to as ISA) bus, Micro Channel Architecture; hereinafter referred to as: MAC) bus, enhanced ISA bus, Video Electronics Standards Association (Video Electronics Standards Association; hereinafter referred to as VESA) local bus, and Peripheral Component Interconnection (hereinafter referred to as PCI) bus.
  • CAN Controller Area Network
  • ISA Industry Standard Architecture
  • MAC Micro Channel Architecture
  • VESA Video Electronics Standards Association
  • PCI Peripheral Component Interconnection
  • the BMU typically includes a variety of computer system readable media. These media can be any available media that can be accessed by the BMU, including volatile and non-volatile media, removable and non-removable media.
  • the memory 430 may include a computer system readable medium in the form of a volatile memory, such as random access memory (Random Access Memory; hereinafter referred to as RAM) and/or cache memory.
  • the BMU may further include other removable/non-removable, volatile/nonvolatile computer system storage media.
  • a disk drive for reading and writing to a removable non-volatile disk such as a "floppy disk"
  • a removable non-volatile optical disk such as a compact disk read-only memory
  • CD-ROM Disc Read Only Memory
  • DVD-ROM Digital Video Disc Read Only Memory
  • each drive may be connected to the communication bus 440 through one or more data medium interfaces.
  • the memory 430 may include at least one program product, and the program product has a set of (for example, at least one) program modules, which are configured to perform the functions of the embodiments of the present application.
  • a program/utility tool having a set of (at least one) program modules may be stored in the memory 430.
  • Such program modules include, but are not limited to, an operating system, one or more application programs, other program modules, and program data Each of these examples or some combination may include the implementation of a network environment.
  • the program module usually executes the functions and/or methods in the embodiments described in this application.
  • the BMU can also communicate with one or more external devices (such as air pressure sensors, etc.), and can also communicate with one or more devices that enable users to interact with the BMU, and/or communicate with one or more other devices that enable the BMU to interact with one or more other devices. Any device (such as a network card, modem, etc.) that communicates with a computing device. This communication can be performed through the communication interface 420. It should be understood that although not shown in FIG. 10, other hardware and/or software modules can be used in conjunction with the BMU, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, and disk arrays (Redundant Arrays of Independent Drives; hereinafter referred to as: RAID) systems, tape drives, and data backup storage systems.
  • RAID Redundant Arrays of Independent Drives
  • the processor 410 executes various functional applications and data processing by running a program stored in the memory 430, for example, realizes the battery thermal runaway detection method provided in the embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of an embodiment of a battery thermal runaway detection system according to the present application.
  • the above-mentioned battery thermal runaway detection system may include an air pressure sensor 1101 and a BMU 1102 provided in a battery pack.
  • BMU1102 is the battery management unit of the aforementioned battery pack, which can be implemented by the BMU provided in the embodiment shown in FIG. 10 of the present application;
  • circuit topology diagram of the connection between the air pressure sensor 1101 and the BMU 1102 may be as shown in FIG. 4, which will not be repeated here.
  • the embodiment of the present application also provides a non-transitory computer-readable storage medium on which a computer program is stored.
  • the computer program is executed by a processor, the method for detecting battery thermal runaway provided in the embodiment of the present application can be implemented.
  • the aforementioned non-transitory computer-readable storage medium may adopt any combination of one or more computer-readable media.
  • the computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium.
  • the computer-readable storage medium may be, for example, but not limited to, an electric, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above.
  • computer-readable storage media include: electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (Read Only Memory) ; Hereinafter referred to as: ROM), Erasable Programmable Read Only Memory; hereinafter referred to as EPROM) or flash memory, optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic memory Pieces, or any suitable combination of the above.
  • the computer-readable storage medium can be any tangible medium that contains or stores a program, and the program can be used by or in combination with an instruction execution system, apparatus, or device.
  • the computer-readable signal medium may include a data signal propagated in baseband or as a part of a carrier wave, and computer-readable program code is carried therein. This propagated data signal can take many forms, including, but not limited to, electromagnetic signals, optical signals, or any suitable combination of the foregoing.
  • the computer-readable signal medium may also be any computer-readable medium other than the computer-readable storage medium.
  • the computer-readable medium may send, propagate, or transmit the program for use by or in combination with the instruction execution system, apparatus, or device .
  • the program code contained on the computer-readable medium can be transmitted by any suitable medium, including, but not limited to, wireless, wire, optical cable, radio frequency (Radio Frequency; hereinafter referred to as: RF), etc., or any suitable medium mentioned above. combination.
  • suitable medium including, but not limited to, wireless, wire, optical cable, radio frequency (Radio Frequency; hereinafter referred to as: RF), etc., or any suitable medium mentioned above. combination.
  • the computer program code used to perform the operations of the present application can be written in one or more programming languages or a combination thereof.
  • the programming languages include object-oriented programming languages-such as Java, Smalltalk, C++, and also conventional Procedural programming language-such as "C" language or similar programming language.
  • the program code can be executed entirely on the user's computer, partly on the user's computer, executed as an independent software package, partly on the user's computer and partly executed on a remote computer, or entirely executed on the remote computer or server.
  • the remote computer can be connected to the user's computer through any kind of network-including local area network (Local Area Network; hereinafter referred to as LAN) or Wide Area Network (hereinafter referred to as WAN), or Connect to an external computer (for example, use an Internet service provider to connect via the Internet).
  • LAN Local Area Network
  • WAN Wide Area Network
  • an external computer for example, use an Internet service provider to connect via the Internet.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include at least one of the features. In the description of the present application, "a plurality of” means at least two, such as two, three, etc., unless specifically defined otherwise.
  • the word “if” as used herein can be interpreted as “when” or “when” or “in response to determination” or “in response to detection”.
  • the phrase “if determined” or “if detected (statement or event)” can be interpreted as “when determined” or “in response to determination” or “when detected (statement or event) )” or “in response to detection (statement or event)”.
  • terminals involved in the embodiments of this application may include, but are not limited to, personal computers (Personal Computer; hereinafter referred to as PC), Personal Digital Assistants (Personal Digital Assistant; hereinafter referred to as PDA), wireless handheld devices, tablets Computer (Tablet Computer), mobile phone, MP3 player, MP4 player, etc.
  • PC Personal Computer
  • PDA Personal Digital Assistants
  • Tablet Computer Tablet Computer
  • mobile phone MP3 player, MP4 player, etc.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined Or it can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.
  • the above-mentioned integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium.
  • the above-mentioned software functional unit is stored in a storage medium and includes several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (Processor) execute the method described in each embodiment of the present application Part of the steps.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory; hereinafter referred to as: ROM), random access memory (Random Access Memory; hereinafter referred to as: RAM), magnetic disks or optical disks, etc.

Abstract

本申请提出了一种电池热失控的检测方法、装置、系统和电池管理单元，其中，上述电池热失控的检测方法包括：获取设置在电池包中的气压传感器的输出信号，以及获取所述电池包的参数信息；根据所述气压传感器的输出信号，确定所述气压传感器的状态信息；根据所述气压传感器的状态信息和所述电池包的参数信息，生成所述电池包发生热失控的告警信号。本申请可以实现结合气压传感器和电池包的参数信息，对电池包进行热失控的检测，提高电池包热失控检测的可靠性，减少漏报和误报的概率，提高驾驶安全性。

Description

电池热失控的检测方法、装置、系统和电池管理单元
本申请要求于2019年4月30日提交中国专利局、申请号为201910361841.8、发明名称为“电池热失控的检测方法、装置、系统和电池管理单元”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电池技术领域，尤其涉及一种电池热失控的检测方法、装置、系统和电池管理单元。
背景技术
动力电池在工作后是必然会发热的，而电池在常态下是可控的，但是在非常态下(比如碰撞和/或过充电等)则会失控，一旦发生热失控，快速的形成高温及破坏力，可能烧穿电池箱上盖，发生着火，从而危害到乘客的人身安全，造成极大的安全事故。而随着市场的要求，动力电池的能量密度不断的增加，市场对电池安全性的需求越来越高。因此，对动力电池是否发生热失控的实时监控告警是必要的。
对于现有模组的设计，柔性电路板(Flexible Printed Circuit Board；以下简称：FPC)或者内置电池监控单元(Cell Supervision Circuit；以下简称：CSC)位于电芯防爆阀的上面，一旦发生热失控，FPC或者内置CSC会被高温的电解液溅射到，从而被烧毁无法与电池管理单元(Battery Management Unit；以下简称：BMU)通信。这种情况下，现有的电池管理系统(Battery Management System；以下简称：BMS)无法检测到热失控的发生，也就无法发出警告，从而危害到乘客的人身安全。
现有的BMS或者目前市面上的一些热失控的监控方案，往往容易出现误报或者漏报的情况，这不仅影响驾驶员的开车体验，更会危害到乘客的人身安全，驾驶的安全性较低。
发明内容
本申请实施例提供了一种电池热失控的检测方法、装置、系统和电池管理单元，以实现结合气压传感器和电池包的参数信息，对电池包进行热失控的检测，提高电池包热失控检测的可靠性，减少漏报和误报的概率，提高驾驶安全性。
第一方面，本申请实施例提供了一种电池热失控的检测方法，包括：获取设置在电池包中的气压传感器的输出信号，以及获取所述电池包的参数信息；根据所述气压传感器的输出信号，确定所述气压传感器的状态信息；根据所述气压传感器的状态信息和所述电池包的参数信息，生成所述电池包发生热失控的告警信号。
其中一种可能的实现方式中，所述生成所述电池包发生热失控的告警信号之后，还包括：将所述电池包发生热失控的告警信号发送给装载有所述电池包的车辆的整车控制器。
其中一种可能的实现方式中，所述获取设置在电池包中的气压传感器的输出信号包括：当所述电池包的电池管理单元处于正常的工作状态时，获取设置在电池包中的气压传感器的输出电压；所述根据所述气压传感器的输出信号，确定所述气压传感器的状态信息包括：当所述气压传感器的输出电压小于预定的第一电压阈值时，确定所述气压传感器处于正常的工作状态；当所述气压传感器的输出电压大于或等于预定的第一电压阈值时，确定所述气压传感器处于气压告警状态；当所述气压传感器的输出电压处于预定的故障电压范围时，确定所述气压传感器处于故障状态。
其中一种可能的实现方式中，所述获取设置在电池包中的气压传感器的输出信号包括：当所述电池包的电池管理单元处于休眠状态时，获取设置在电池包中的气压传感器输出的逻辑信号；所述根据所述气压传感器的输出信号，确定所述气压传感器的状态信息包括：当所述逻辑信号为高电平信号时，所述电池包的电池管理单元被从所述休眠状态唤醒之后，确定所述气压传感器处于气压告警状态。
其中一种可能的实现方式中，所述根据所述气压传感器的状态信息和 所述电池包的参数信息，生成所述电池包发生热失控的告警信号包括：当所述气压传感器处于气压告警状态时，在预定的检测时长内，如果所述电池包的参数信息中故障条件的任意一个或多个被满足，则生成所述电池包发生热失控的告警信号；所述电池包的参数信息中的故障条件包括：
所述电池包单体电芯的最高温度大于预定的温度阈值的时长超过第一时长阈值；
所述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值；
所述电池包单体电芯的最高温度与最低温度的差值大于预定的差值阈值的时长超过第三时长阈值；
所述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值；
所述电池包的电压采样断路故障数大于或等于预定的故障数阈值；
所述电池包的同一模组内的温度传感器完全失效；
所述电池包的电池监控单元与所述电池管理单元之间的通讯完全丢失。
其中一种可能的实现方式中，所述根据所述气压传感器的状态信息和所述电池包的参数信息，生成所述电池包发生热失控的告警信号包括：当所述气压传感器处于正常的工作状态或故障状态时，如果所述电池包的参数信息中故障条件的任意一个或多个被满足，则生成所述电池包发生热失控的告警信号；所述电池包的参数信息中的故障条件包括：
在预定的检测时长内，所述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值，并且所述电池包单体电芯的最高温度大于预定的温度阈值的时长超过第一时长阈值；
在预定的检测时长内，所述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值，并且所述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值；
在预定的检测时长内，所述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值，并且所述电池包单体电芯的最高温 度与最低温度的差值大于预定的差值阈值的时长超过第三时长阈值；
在预定的检测时长内，所述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值，并且所述电池包单体电芯的最高温度大于预定的温度阈值的时长超过第一时长阈值；
在预定的检测时长内，所述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值，并且所述电池包单体电芯的最高温度与最低温度的差值大于预定的差值阈值的时长超过第三时长阈值；
所述电池包的电压采样断路故障数大于或等于预定的故障数阈值，并且所述电池包单体电芯的最高温度大于预定的温度阈值的时长超过第一时长阈值；
所述电池包的电压采样断路故障数大于或等于预定的故障数阈值，并且所述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值；
所述电池包的电压采样断路故障数大于或等于预定的故障数阈值，并且所述电池包单体电芯的最高温度与最低温度的差值大于预定的差值阈值的时长超过第三时长阈值；
所述电池包的电压采样断路故障数大于或等于预定的故障数阈值，并且所述电池包的同一模组内的温度传感器完全失效；
所述电池包单体电芯的充电状态满足以下状态，并且持续时长大于或等于预定时长：所述电池包单体电芯的最大电压大于预定的第三电压阈值，并且所述电池包单体电芯的荷电状态的真实值大于预定阈值，并且所述电池包单体电芯的充电电流大于或等于预定的充电电流阈值。
第二方面，本申请实施例提供一种电池热失控的检测装置，包括：获取模块，用于获取设置在电池包中的气压传感器的输出信号，以及获取所述电池包的参数信息；确定模块，用于根据所述获取模块获取的气压传感器的输出信号，确定所述气压传感器的状态信息；生成模块，用于根据所述气压传感器的状态信息和所述获取模块获取的电池包的参数信息，生成所述电池包发生热失控的告警信号。
其中一种可能的实现方式中，所述装置还包括：发送模块，用于在所述生成模块生成所述电池包发生热失控的告警信号之后，将所述电池包发生热失控的告警信号发送给装载有所述电池包的车辆的整车控制器。
其中一种可能的实现方式中，所述获取模块，具体用于当所述电池包的电池管理单元处于正常的工作状态时，获取设置在电池包中的气压传感器的输出电压；
所述确定模块，具体用于当所述气压传感器的输出电压小于预定的第一电压阈值时，确定所述气压传感器处于正常的工作状态；当所述气压传感器的输出电压大于或等于预定的第一电压阈值时，确定所述气压传感器处于气压告警状态；当所述气压传感器的输出电压处于预定的故障电压范围时，确定所述气压传感器处于故障状态。
其中一种可能的实现方式中，所述获取模块，具体用于当所述电池包的电池管理单元处于休眠状态时，获取设置在电池包中的气压传感器输出的逻辑信号；
所述确定模块，具体用于当所述逻辑信号为高电平信号时，所述电池包的电池管理单元被从所述休眠状态唤醒之后，确定所述气压传感器处于气压告警状态。
其中一种可能的实现方式中，所述生成模块，具体用于当所述气压传感器处于气压告警状态时，在预定的检测时长内，如果所述电池包的参数信息中故障条件的任意一个或多个被满足，则生成所述电池包发生热失控的告警信号；所述电池包的参数信息中的故障条件包括：
所述电池包单体电芯的最高温度大于预定的温度阈值的时长超过第一时长阈值；
所述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值；
所述电池包单体电芯的最高温度与最低温度的差值大于预定的差值阈值的时长超过第三时长阈值；
所述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值；
所述电池包的电压采样断路故障数大于或等于预定的故障数阈值；
所述电池包的同一模组内的温度传感器完全失效；
所述电池包的电池监控单元与所述电池管理单元之间的通讯完全丢失。
其中一种可能的实现方式中，所述生成模块，具体用于当所述气压传感器处于正常的工作状态或故障状态时，如果所述电池包的参数信息中故障条件的任意一个或多个被满足，则生成所述电池包发生热失控的告警信号；所述电池包的参数信息中的故障条件包括：
在预定的检测时长内，所述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值，并且所述电池包单体电芯的最高温度大于预定的温度阈值的时长超过第一时长阈值；
在预定的检测时长内，所述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值，并且所述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值；
在预定的检测时长内，所述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值，并且所述电池包单体电芯的最高温度与最低温度的差值大于预定的差值阈值的时长超过第三时长阈值；
在预定的检测时长内，所述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值，并且所述电池包单体电芯的最高温度大于预定的温度阈值的时长超过第一时长阈值；
在预定的检测时长内，所述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值，并且所述电池包单体电芯的最高温度与最低温度的差值大于预定的差值阈值的时长超过第三时长阈值；
所述电池包的电压采样断路故障数大于或等于预定的故障数阈值，并且所述电池包单体电芯的最高温度大于预定的温度阈值的时长超过第一时长阈值；
所述电池包的电压采样断路故障数大于或等于预定的故障数阈值，并且所述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的 时长超过第二时长阈值；
所述电池包的电压采样断路故障数大于或等于预定的故障数阈值，并且所述电池包单体电芯的最高温度与最低温度的差值大于预定的差值阈值的时长超过第三时长阈值；
所述电池包的电压采样断路故障数大于或等于预定的故障数阈值，并且所述电池包的同一模组内的温度传感器完全失效；
所述单体电芯的充电状态满足以下状态，并且持续时长大于或等于预定时长：所述电池包单体电芯的最大电压大于预定的第三电压阈值，并且所述电池包单体电芯的荷电状态的真实值大于预定阈值，并且所述电池包单体电芯的充电电流大于或等于预定的充电电流阈值。
第三方面，本申请实施例提供一种电池管理单元，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时，实现如上所述的方法。
第四方面，本申请实施例提供一种电池热失控的检测系统，包括设置在电池包中的气压传感器和如上所述的电池管理单元。
第五方面，本申请实施例提供一种非临时性计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现如上所述的方法。
以上技术方案中，获取设置在电池包中的气压传感器的输出信号，以及获取上述电池包的参数信息之后，根据上述气压传感器的输出信号，确定上述气压传感器的状态信息，最后根据上述气压传感器的状态信息和上述电池包的参数信息，生成上述电池包发生热失控的告警信号，从而可以实现结合气压传感器和电池包的参数信息，对电池包进行热失控的检测，提高电池包热失控检测的可靠性，减少漏报和误报的概率，提高驾驶安全性。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申 请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。
图1为本申请电池热失控的检测方法一个实施例的流程图；
图2为本申请电池热失控的检测方法另一个实施例的流程图；
图3为本申请电池热失控的检测方法再一个实施例的流程图；
图4为本申请电池热失控的检测方法中气压传感器的电路拓扑结构图；
图5为本申请电池热失控的检测方法再一个实施例的流程图；
图6为本申请电池热失控的检测方法中热失控的告警策略一个实施例的示意图；
图7为本申请电池热失控的检测方法中热失控的告警策略另一个实施例的示意图；
图8为本申请电池热失控的检测装置一个实施例的结构示意图；
图9为本申请电池热失控的检测装置另一个实施例的结构示意图；
图10为本申请电池管理单元一个实施例的结构示意图；
图11为本申请电池热失控的检测系统一个实施例的结构示意图。
具体实施方式
为了更好的理解本申请的技术方案，下面结合附图对本申请实施例进行详细描述。
应当明确，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。
在本申请实施例中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请。在本申请实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。
图1为本申请电池热失控的检测方法一个实施例的流程图，本实施例提供的电池热失控的检测方法可以由BMU执行。如图1所示，上述电池 热失控的检测方法可以包括：
步骤101，获取设置在电池包中的气压传感器的输出信号，以及获取上述电池包的参数信息。
本实施例中，电池包是由多个单体电芯组成的，气压传感器可以设置在电池包中，通过仿真及实验结果发现，在电池包中的单体电芯发生热失控时，电池包(Pack)内各个位置的气压是均匀分布的，因此上述气压传感器可以布置在电池包(Pack)内的任一位置。
在具体实现时，上述气压传感器可以采用双通道气压传感器，当然也可以采用其他类型的气压传感器，本实施例对此不作限定。
步骤102，根据上述气压传感器的输出信号，确定上述气压传感器的状态信息。
步骤103，根据上述气压传感器的状态信息和上述电池包的参数信息，生成上述电池包发生热失控的告警信号。
上述电池热失控的检测方法中，获取设置在电池包中的气压传感器的输出信号，以及获取上述电池包的参数信息之后，根据上述气压传感器的输出信号，确定上述气压传感器的状态信息，最后根据上述气压传感器的状态信息和上述电池包的参数信息，生成上述电池包发生热失控的告警信号，从而可以实现结合气压传感器和电池包的参数信息，对电池包进行热失控的检测，提高电池包热失控检测的可靠性，减少漏报和误报的概率，提高驾驶安全性。
图2为本申请电池热失控的检测方法另一个实施例的流程图，如图2所示，本申请图1所示实施例中，步骤103之后，还可以包括：
步骤201，将上述电池包发生热失控的告警信号发送给装载有上述电池包的车辆的整车控制器(Vehicle Control Unit；以下简称：VCU)。
具体地，在BMU生成热失控的告警信号之后，可以将上述告警信号，发送给装载有上述电池包的车辆的VCU，之后VCU会根据预先设定的策略对电池包发生热失控的故障进行处理，例如：进行声光报警等。
图3为本申请电池热失控的检测方法再一个实施例的流程图，如图3所示，本申请图1所示实施例中，步骤101可以为：
步骤301，当上述电池包的BMU处于正常的工作状态时，获取设置在电池包中的气压传感器的输出电压。
图4为本申请电池热失控的检测方法中气压传感器的电路拓扑结构图，图4中的Sensor模块即为气压传感器。本实施例中，当BMU正常工作时，气压传感器处于正常工作状态，V1_T上电，三极管被导通，从而专用集成电路(Application Specific Integrated Circuits；以下简称：ASIC)开始工作，而低功率专用集成电路(Low Power ASIC)不工作，此时气压传感器的输出信号为实时的输出电压值Vout。其中，V1_T的电压值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对V1_T的电压值的大小不作限定，举例来说，V1_T的电压值可以为12.0V。
这时，步骤102可以为：
步骤302，当上述气压传感器的输出电压小于预定的第一电压阈值时，确定上述气压传感器处于正常的工作状态；当所述气压传感器的输出电压大于或等于预定的第一电压阈值时，确定上述气压传感器处于气压告警状态；当上述气压传感器的输出电压处于预定的故障电压范围时，确定上述气压传感器处于故障状态。
其中，上述预定的第一电压阈值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述预定的第一电压阈值的大小不作限定；同样，上述预定的故障电压范围也可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述预定的故障电压范围不作限定，举例来说，上述预定的故障电压范围可以为0～0.2V以及4.8～5V。
考虑到气压传感器失效的情况下会丧失热失控的检测功能，因此本实施例中，气压传感器在正常工作状态下带有自诊断的功能，一旦气压传感器的输出电压值在预定的故障电压范围(即0～0.2V&4.8～5V)内，则确定上述气压传感器处于故障状态；而气压传感器在低功耗工作状态下不具备诊断功能。
另外，由于气压传感器检测的是Pack内的气压，考虑到地域不同外 界大气压的差异可能造成气压传感器错误的发出气压告警信号，因此可以在气压传感器中添加一个电位计，通过正常情况下采到的外界气压值实时标定Pack内的气压报警阈值。
图5为本申请电池热失控的检测方法再一个实施例的流程图，如图5所示，本申请图1所示实施例中，步骤101可以为：
步骤501，当上述电池包的BMU处于休眠状态时，获取设置在电池包中的气压传感器输出的逻辑信号。
其中，上述逻辑信号可以为逻辑门电路(Transistor-Transistor Logic；以下简称：TTL)信号。
参见图4，当BMU处于休眠状态时，气压传感器处于低功耗工作状态，V1_T下电，三极管不导通，从而ASIC不工作，而常电V2_Standby由铅酸供电，Low Power ASIC工作，此时气压传感器通过比较器输出一个TTL信号。其中，V2_Standby的电压值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对V2_Standby的电压值的大小不作限定，举例来说，V2_Standby的电压值可以为5.0V。
这时，步骤102可以为：
步骤502，当上述逻辑信号为高电平信号时，上述电池包的BMU被从休眠状态唤醒之后，确定上述气压传感器处于气压告警状态。
具体地，当上述电池包的BMU处于休眠状态时，在正常情况下，气压传感器输出低电平信号，这时BMU的工作状态不会发生改变，BMU仍处于休眠状态；而当气压传感器输出高电平信号时，上述电池包的BMU被从休眠状态唤醒开始工作，确定上述气压传感器处于气压告警状态。
本实施例中，气压传感器能够在低功耗工作状态下对电池包的热失控进行监控，这样气压传感器就可以持续不断电的工作，从而在整车停车下电状态下依然具备热失控的检测与告警功能。
在本申请图3和图5所示实施例的一种实现方式中，步骤103可以为：
当上述气压传感器处于气压告警状态时，在预定的检测时长内，如果 上述电池包的参数信息中故障条件的任意一个或多个被满足，则生成上述电池包发生热失控的告警信号；上述电池包的参数信息中的故障条件包括：
上述电池包单体电芯的最高温度大于预定的温度阈值的时长超过第一时长阈值；
上述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值；
上述电池包单体电芯的最高温度与最低温度的差值大于预定的差值阈值的时长超过第三时长阈值；
上述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值；
上述电池包的电压采样断路故障数大于或等于预定的故障数阈值；
上述电池包的同一模组内的温度传感器完全失效；
上述电池包的CSC与BMU之间的通讯完全丢失。
其中，上述预定的检测时长可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述预定的检测时长的长短不作限定，举例来说，上述预定的检测时长可以为10分钟；
上述预定的温度阈值的大小可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述预定的温度阈值的大小不作限定，举例来说，上述预定的温度阈值可以为68.4℃；
上述第一时长阈值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述第一时长阈值的长短不作限定，举例来说，上述第一时长阈值可以为2秒；
上述单体电芯的温度随时间的升高率为dT/dt，上述预定的升高率阈值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述预定的升高率阈值的大小不作限定，举例来说，上述预定的升高率阈值可以为3℃/s；
上述第二时长阈值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述第二时长阈值的长短不作限定，举例来说，上述第二时长阈值可以与第一时长阈值相等或不等，本实施例对此不作限 定，本实施例以第二时长阈值与第一时长阈值相等为例进行说明，第二时长阈值可以为2秒；
上述预定的差值阈值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述预定的差值阈值的大小不作限定，举例来说，上述预定的差值阈值可以为30℃；
上述第三时长阈值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述第三时长阈值的长短不作限定，举例来说，上述第三时长阈值可以与第一时长阈值相等或不等，可以与第二时长阈值相等或不等，本实施例对此不作限定，本实施例以第三时长阈值与第一时长阈值和第二时长阈值均相等为例进行说明，第三时长阈值可以为2秒；
上述预定的第二电压阈值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述预定的第二电压阈值的大小不作限定，举例来说，上述预定的第二电压阈值可以为2.0V；
上述第四时长阈值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述第四时长阈值的长短不作限定，举例来说，上述第四时长阈值可以与第一时长阈值、第二时长阈值和第三时长阈值相等或不等，本实施例对此不作限定，本实施例以第四时长阈值与第一时长阈值、第二时长阈值和第三时长阈值不等为例进行说明，第四时长阈值可以为300毫秒；
上述预定的故障数阈值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述预定的故障数阈值的大小不作限定，举例来说，上述预定的故障数阈值可以为1。
当上述气压传感器处于气压告警状态时，BMU生成上述电池包发生热失控的告警信号的策略可以如图6所示，图6为本申请电池热失控的检测方法中热失控的告警策略一个实施例的示意图。
图6中，Tmax为上述单体电芯的最高温度，dT/dt为上述单体电芯的温度随时间的升高率，Tmin为上述单体电芯的最低温度，Vmin为上述单体电芯的最低电压，负温度系数热敏电阻器(Negative Temperature Coefficient；以下简称：NTC)为温度传感器。
在本申请图3和图5所示实施例的另一种实现方式中，步骤103可以为：
当上述气压传感器处于正常的工作状态或故障状态时，如果上述电池包的参数信息中故障条件的任意一个或多个被满足，则生成上述电池包发生热失控的告警信号；上述电池包的参数信息中的故障条件包括：
在预定的检测时长内，上述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值，并且上述电池包单体电芯的最高温度大于预定的温度阈值的时长超过第一时长阈值；
在预定的检测时长内，上述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值，并且上述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值；
在预定的检测时长内，上述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值，并且上述电池包单体电芯的最高温度与最低温度的差值大于预定的差值阈值的时长超过第三时长阈值；
在预定的检测时长内，上述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值，并且上述电池包单体电芯的最高温度大于预定的温度阈值的时长超过第一时长阈值；
在预定的检测时长内，上述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值，并且上述电池包单体电芯的最高温度与最低温度的差值大于预定的差值阈值的时长超过第三时长阈值；
上述电池包的电压采样断路故障数大于或等于预定的故障数阈值，并且上述电池包单体电芯的最高温度大于预定的温度阈值的时长超过第一时长阈值；
上述电池包的电压采样断路故障数大于或等于预定的故障数阈值，并且上述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值；
上述电池包的电压采样断路故障数大于或等于预定的故障数阈值，并且上述电池包单体电芯的最高温度与最低温度的差值大于预定的差值阈 值的时长超过第三时长阈值；
上述电池包的电压采样断路故障数大于或等于预定的故障数阈值，并且上述电池包的同一模组内的温度传感器完全失效；
上述电池包单体电芯的充电状态满足以下状态，并且持续时长大于或等于预定时长：上述电池包单体电芯的最大电压大于预定的第三电压阈值，并且上述电池包单体电芯的荷电状态的真实值大于预定阈值，并且上述电池包单体电芯的充电电流大于或等于预定的充电电流阈值；也就是说，当上述气压传感器处于正常的工作状态或故障状态时，且上述电池包参数信息满足充电状态下的故障条件，则生成上述电池包发生热失控的告警信号，这里的热失控的告警信号为上述电池包即将发生热失控的预警信号，从而可以实现电池包的过冲预警的功能，并且可以预先采取相应的措施，避免发生热失控，进一步提高电池包的安全性。
其中，上述预定时长可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述预定时长的长短不作限定，举例来说，上述预定时长可以为5秒；上述预定的第三电压阈值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述预定的第三电压阈值的大小不作限定，举例来说，上述预定的第三电压阈值可以为1.1×三级过压；上述电池包的荷电状态(State of Charge；以下简称：SOC)的真实值即为TRD_SOC，上述预定阈值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述预定阈值的大小不作限定，举例来说，上述预定阈值可以为115％；上述预定的充电电流阈值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述预定的充电电流阈值的大小不作限定，举例来说，上述预定的充电电流阈值可以为0.33C。
当上述气压传感器处于正常的工作状态或故障状态时，BMU生成上述电池包发生热失控的告警信号的策略可以如图7所示，图7为本申请电池热失控的检测方法中热失控的告警策略另一个实施例的示意图。
现有的电池包热失控的告警策略中，CSC通讯完全丢失是作为单一的触发条件来触发热失控告警，考虑到热失控发生时，极有可能破坏CSC 的通讯功能，因此CSC通讯完全丢失作为单一触发条件，使得该触发条件的可靠性较低，热失控的误报率较高。
本申请图6所示的告警策略，是增加气压传感器后BMU检测电芯热失控的告警策略，将误报率较高的CSC通讯完全丢失这一触发条件与气压传感器的气压告警状态相组合，同时气压传感器的气压告警状态也需要与电压、温度等其他条件相组合。
而本申请图7所示的告警策略，则是当上述气压传感器处于正常的工作状态或故障状态时，除去误报率较高的CSC通讯完全丢失这一触发条件，从而大大增加了上述告警策略的可靠性。
本申请图6和图7所示的告警策略中，10分钟同时达到这个条件是为了防止，在低SOC下电芯热失控时表征状况并不十分剧烈而使得达到报警条件的时间相对比较久。
图8为本申请电池热失控的检测装置一个实施例的结构示意图，上述电池热失控的检测装置可以作为BMU或者BMU的一部分，实现本申请实施例提供的电池热失控的检测方法。如图8所示，上述电池热失控的检测装置可以包括：获取模块81、确定模块82和生成模块83；
获取模块81，用于获取设置在电池包中的气压传感器的输出信号，以及获取上述电池包的参数信息；本实施例中，电池包是由多个单体电芯组成的，气压传感器可以设置在电池包中，通过仿真及实验结果发现，在单体电芯发生热失控时，电池包(Pack)内各个位置的气压是均匀分布的，因此上述气压传感器可以布置在电池包(Pack)内的任一位置。
在具体实现时，上述气压传感器可以采用双通道气压传感器，当然也可以采用其他类型的气压传感器，本实施例对此不作限定。
确定模块82，用于根据获取模块81获取的气压传感器的输出信号，确定上述气压传感器的状态信息；
生成模块83，用于根据上述气压传感器的状态信息和上述电池包的参数信息，生成上述电池包发生热失控的告警信号。
上述电池热失控的检测装置中，获取模块81获取设置在电池包中的 气压传感器的输出信号，以及获取上述电池包的参数信息之后，确定模块82根据上述气压传感器的输出信号，确定上述气压传感器的状态信息，最后生成模块83根据上述气压传感器的状态信息和上述电池包的参数信息，生成上述电池包发生热失控的告警信号，从而可以实现结合气压传感器和电池包的参数信息，对电池包进行热失控的检测，提高电池包热失控检测的可靠性，减少漏报和误报的概率，提高驾驶安全性。
图9为本申请电池热失控的检测装置另一个实施例的结构示意图，与图8所示的电池热失控的检测装置相比，不同之处在于，图9所示的电池热失控的检测装置还可以包括：
发送模块84，用于在生成模块83生成上述电池包发生热失控的告警信号之后，将上述电池包发生热失控的告警信号发送给装载有上述电池包的车辆的VCU。
具体地，在生成模块83生成热失控的告警信号之后，发送模块84可以将上述告警信号，发送给装载有上述电池包的车辆的VCU，之后VCU会根据预先设定的策略对电池包发生热失控的故障进行处理，例如：进行声光报警等。
本实施例的一种实现方式中，获取模块81，具体用于当上述电池包的电池管理单元处于正常的工作状态时，获取设置在电池包中的气压传感器的输出电压；图4中的Sensor模块即为气压传感器。本实施例中，当BMU正常工作时，气压传感器处于正常工作状态，V1_T上电，三极管被导通，从而ASIC开始工作，而Low Power ASIC不工作，此时获取模块81获取的气压传感器的输出信号为实时的输出电压值Vout。其中，V1_T的电压值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对V1_T的电压值的大小不作限定，举例来说，V1_T的电压值可以为12.0V。
确定模块82，具体用于当上述气压传感器的输出电压小于预定的第一电压阈值时，确定上述气压传感器处于正常的工作状态；当上述气压传感器的输出电压大于或等于预定的第一电压阈值时，确定上述气压传感器 处于气压告警状态；当上述气压传感器的输出电压处于预定的故障电压范围时，确定上述气压传感器处于故障状态。
其中，上述预定的第一电压阈值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述预定的第一电压阈值的大小不作限定；同样，上述预定的故障电压范围也可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述预定的故障电压范围不作限定，举例来说，上述预定的故障电压范围可以为0～0.2V以及4.8～5V。
考虑到气压传感器失效的情况下会丧失热失控的检测功能，因此本实施例中，气压传感器在正常工作状态下带有自诊断的功能，一旦气压传感器的输出电压值在预定的故障电压范围(即0～0.2V&4.8～5V)内，则确定模块82确定上述气压传感器处于故障状态；而气压传感器在低功耗工作状态下不具备诊断功能。
另外，由于气压传感器检测的是Pack内的气压，考虑到地域不同外界大气压的差异可能造成气压传感器错误的发出气压告警信号，因此可以在气压传感器中添加一个电位计，通过正常情况下采到的外界气压值实时标定Pack内的气压报警阈值。
本实施例的另一种实现方式中，获取模块81，具体用于当上述电池包的BMU处于休眠状态时，获取设置在电池包中的气压传感器输出的逻辑信号；其中，上述逻辑信号可以为TTL信号。
参见图4，当BMU处于休眠状态时，气压传感器处于低功耗工作状态，V1_T下电，三极管不导通，从而ASIC不工作，而常电V2_Standby由铅酸供电，Low Power ASIC工作，此时气压传感器通过比较器输出一个TTL信号。其中，V2_Standby的电压值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对V2_Standby的电压值的大小不作限定，举例来说，V2_Standby的电压值可以为5.0V。
确定模块82，具体用于当上述逻辑信号为高电平信号时，上述电池包的BMU被从休眠状态唤醒之后，确定上述气压传感器处于气压告警状态。
具体地，当上述电池包的BMU处于休眠状态时，在正常情况下，气 压传感器输出低电平信号，这时BMU的工作状态不会发生改变，BMU仍处于休眠状态；而当气压传感器输出高电平信号时，上述电池包的BMU被从休眠状态唤醒开始工作，确定模块82确定上述气压传感器处于气压告警状态。
本实施例中，气压传感器能够在低功耗工作状态下对电池包的热失控进行监控，这样气压传感器就可以持续不断电的工作，从而在整车停车下电状态下依然具备热失控的检测与告警功能。
一种实现方式中，生成模块83，具体用于当上述气压传感器处于气压告警状态时，在预定的检测时长内，如果上述电池包的参数信息中故障条件的任意一个或多个被满足，则生成上述电池包发生热失控的告警信号；上述电池包的参数信息中的故障条件包括：
上述电池包单体电芯的最高温度大于预定的温度阈值的时长超过第一时长阈值；
上述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值；
上述电池包单体电芯的最高温度与最低温度的差值大于预定的差值阈值的时长超过第三时长阈值；
上述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值；
上述电池包的电压采样断路故障数大于或等于预定的故障数阈值；
上述电池包的同一模组内的温度传感器完全失效；
上述电池包的CSC与BMU之间的通讯完全丢失。
其中，上述预定的检测时长可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述预定的检测时长的长短不作限定，举例来说，上述预定的检测时长可以为10分钟；
上述预定的温度阈值的大小可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述预定的温度阈值的大小不作限定，举例来说，上述预定的温度阈值可以为68.4℃；
上述第一时长阈值可以在具体实现时，根据系统性能和/或实现需求 等自行设定，本实施例对上述第一时长阈值的长短不作限定，举例来说，上述第一时长阈值可以为2秒；
上述单体电芯的温度随时间的升高率为dT/dt，上述预定的升高率阈值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述预定的升高率阈值的大小不作限定，举例来说，上述预定的升高率阈值可以为3℃/s；
上述第二时长阈值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述第二时长阈值的长短不作限定，举例来说，上述第二时长阈值可以与第一时长阈值相等或不等，本实施例对此不作限定，本实施例以第二时长阈值与第一时长阈值相等为例进行说明，第二时长阈值可以为2秒；
上述预定的差值阈值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述预定的差值阈值的大小不作限定，举例来说，上述预定的差值阈值可以为30℃；
上述第三时长阈值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述第三时长阈值的长短不作限定，举例来说，上述第三时长阈值可以与第一时长阈值相等或不等，可以与第二时长阈值相等或不等，本实施例对此不作限定，本实施例以第三时长阈值与第一时长阈值和第二时长阈值均相等为例进行说明，第三时长阈值可以为2秒；
上述预定的第二电压阈值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述预定的第二电压阈值的大小不作限定，举例来说，上述预定的第二电压阈值可以为2.0V；
上述第四时长阈值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述第四时长阈值的长短不作限定，举例来说，上述第四时长阈值可以与第一时长阈值、第二时长阈值和第三时长阈值相等或不等，本实施例对此不作限定，本实施例以第四时长阈值与第一时长阈值、第二时长阈值和第三时长阈值不等为例进行说明，第四时长阈值可以为300毫秒；
上述预定的故障数阈值可以在具体实现时，根据系统性能和/或实现 需求等自行设定，本实施例对上述预定的故障数阈值的大小不作限定，举例来说，上述预定的故障数阈值可以为1。
当上述气压传感器处于气压告警状态时，生成模块83生成上述电池包发生热失控的告警信号的策略可以如图6所示。
图6中，Tmax为上述单体电芯的最高温度，dT/dt为上述单体电芯的温度随时间的升高率，Tmin为上述单体电芯的最低温度，Vmin为上述单体电芯的最低电压，NTC为温度传感器。
另一种实现方式中，生成模块83，具体用于当上述气压传感器处于正常的工作状态或故障状态时，如果上述电池包的参数信息中故障条件的任意一个或多个被满足，则生成上述电池包发生热失控的告警信号；上述电池包的参数信息中的故障条件包括：
在预定的检测时长内，上述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值，并且上述电池包单体电芯的最高温度大于预定的温度阈值的时长超过第一时长阈值；
在预定的检测时长内，上述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值，并且上述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值；
在预定的检测时长内，上述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值，并且上述电池包单体电芯的最高温度与最低温度的差值大于预定的差值阈值的时长超过第三时长阈值；
在预定的检测时长内，上述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值，并且上述单体电芯的最高温度大于预定的温度阈值的时长超过第一时长阈值；
在预定的检测时长内，上述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值，并且上述电池包单体电芯的最高温度与最低温度的差值大于预定的差值阈值的时长超过第三时长阈值；
上述电池包单体电芯的电压采样断路故障数大于或等于预定的故障数阈值，并且上述电池包单体电芯的最高温度大于预定的温度阈值的时长 超过第一时长阈值；
上述电池包的电压采样断路故障数大于或等于预定的故障数阈值，并且上述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值；
上述电池包的电压采样断路故障数大于或等于预定的故障数阈值，并且上述电池包单体电芯的最高温度与最低温度的差值大于预定的差值阈值的时长超过第三时长阈值；
上述电池包的电压采样断路故障数大于或等于预定的故障数阈值，并且上述电池包的同一模组内的温度传感器完全失效；
上述电池包单体电芯的充电状态满足以下状态，并且持续时长大于或等于预定时长：上述电池包单体电芯的最大电压大于预定的第三电压阈值，并且上述电池包单体电芯的荷电状态的真实值大于预定阈值，并且上述电池包单体电芯的充电电流大于或等于预定的充电电流阈值；也就是说，当上述气压传感器处于正常的工作状态或故障状态时，且上述电池包参数信息满足充电状态下的故障条件，则生成上述电池包发生热失控的告警信号，这里的热失控的告警信号为上述电池包即将发生热失控的预警信号，从而可以实现电池包的过冲预警的功能，并且可以预先采取相应的措施，避免发生热失控，进一步提高电池包的安全性。
其中，上述预定时长可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述预定时长的长短不作限定，举例来说，上述预定时长可以为5秒；上述预定的第三电压阈值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述预定的第三电压阈值的大小不作限定，举例来说，上述预定的第三电压阈值可以为1.1×三级过压；上述电池包的SOC的真实值即为TRD_SOC，上述预定阈值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述预定阈值的大小不作限定，举例来说，上述预定阈值可以为115％；上述预定的充电电流阈值可以在具体实现时，根据系统性能和/或实现需求等自行设定，本实施例对上述预定的充电电流阈值的大小不作限定，举例来说，上述预定的充电电流阈值可以为0.33C。
当上述气压传感器处于正常的工作状态或故障状态时，生成模块83生成上述电池包发生热失控的告警信号的策略可以如图7所示。
现有的电池包热失控的告警策略中，CSC通讯完全丢失是作为单一的触发条件来触发热失控告警，考虑到热失控发生时，极有可能破坏CSC的通讯功能，因此CSC通讯完全丢失作为单一触发条件，使得该触发条件的可靠性较低，热失控的误报率较高。
本申请图6所示的告警策略，是增加气压传感器后生成模块83生成热失控的告警信号的策略，将误报率较高的CSC通讯完全丢失这一触发条件与气压传感器的气压告警状态相组合，同时气压传感器的气压告警状态也需要与电压、温度等其他条件相组合。
而本申请图7所示的告警策略，则是当上述气压传感器处于正常的工作状态或故障状态时，除去误报率较高的CSC通讯完全丢失这一触发条件，从而大大增加了上述告警策略的可靠性。
本申请图6和图7所示的告警策略中，10分钟同时达到这个条件是为了防止，在低SOC下电芯热失控时表征状况并不十分剧烈而使得达到报警条件的时间相对比较久。
图10为本申请电池管理单元一个实施例的结构示意图，上述BMU包括存储器、处理器及存储在上述存储器上并可在上述处理器上运行的计算机程序，上述处理器执行上述计算机程序时，可以实现本申请实施例提供的电池热失控的检测方法。
图10示出了适于用来实现本申请实施方式的示例性BMU的框图。图10显示的BMU仅仅是一个示例，不应对本申请实施例的功能和使用范围带来任何限制。
如图10所示，BMU以通用计算设备的形式表现。BMU的组件可以包括但不限于：一个或者多个处理器410，存储器430，连接不同系统组件(包括存储器430和处理单元410)的通信总线440。
通信总线440表示几类总线结构中的一种或多种，包括存储器总线或者存储器控制器，外围总线，图形加速端口，处理器或者使用多种总线结 构中的任意总线结构的局域总线。举例来说，这些体系结构包括但不限于控制器局域网络(Controller Area Network；以下简称：CAN)总线，工业标准体系结构(Industry Standard Architecture；以下简称：ISA)总线，微通道体系结构(Micro Channel Architecture；以下简称：MAC)总线，增强型ISA总线、视频电子标准协会(Video Electronics Standards Association；以下简称：VESA)局域总线以及外围组件互连(Peripheral Component Interconnection；以下简称：PCI)总线。
BMU典型地包括多种计算机系统可读介质。这些介质可以是任何能够被BMU访问的可用介质，包括易失性和非易失性介质，可移动的和不可移动的介质。
存储器430可以包括易失性存储器形式的计算机系统可读介质，例如随机存取存储器(Random Access Memory；以下简称：RAM)和/或高速缓存存储器。BMU可以进一步包括其它可移动/不可移动的、易失性/非易失性计算机系统存储介质。尽管图10中未示出，可以提供用于对可移动非易失性磁盘(例如“软盘”)读写的磁盘驱动器，以及对可移动非易失性光盘(例如：光盘只读存储器(Compact Disc Read Only Memory；以下简称：CD-ROM)、数字多功能只读光盘(Digital Video Disc Read Only Memory；以下简称：DVD-ROM)或者其它光介质)读写的光盘驱动器。在这些情况下，每个驱动器可以通过一个或者多个数据介质接口与通信总线440相连。存储器430可以包括至少一个程序产品，该程序产品具有一组(例如至少一个)程序模块，这些程序模块被配置以执行本申请各实施例的功能。
具有一组(至少一个)程序模块的程序/实用工具，可以存储在存储器430中，这样的程序模块包括——但不限于——操作系统、一个或者多个应用程序、其它程序模块以及程序数据，这些示例中的每一个或某种组合中可能包括网络环境的实现。程序模块通常执行本申请所描述的实施例中的功能和/或方法。
BMU也可以与一个或多个外部设备(例如气压传感器等)通信，还可与一个或者多个使得用户能与该BMU交互的设备通信，和/或与使得该 BMU能与一个或多个其它计算设备进行通信的任何设备(例如网卡，调制解调器等等)通信。这种通信可以通过通信接口420进行。应当明白，尽管图10中未示出，可以结合BMU使用其它硬件和/或软件模块，包括但不限于：微代码、设备驱动器、冗余处理单元、外部磁盘驱动阵列、磁盘阵列(Redundant Arrays of Independent Drives；以下简称：RAID)系统、磁带驱动器以及数据备份存储系统等。
处理器410通过运行存储在存储器430中的程序，从而执行各种功能应用以及数据处理，例如实现本申请实施例提供的电池热失控的检测方法。
图11为本申请电池热失控的检测系统一个实施例的结构示意图，如图11所示，上述电池热失控的检测系统可以包括设置在电池包中的气压传感器1101和BMU1102。
其中，BMU1102为上述电池包的电池管理单元，可以通过本申请图10所示实施例提供的BMU实现；
本实施例中，气压传感器1101和BMU1102连接的电路拓扑结构图可以如图4所示，在此不再赘述。
本申请实施例还提供一种非临时性计算机可读存储介质，其上存储有计算机程序，上述计算机程序被处理器执行时可以实现本申请实施例提供的电池热失控的检测方法。
上述非临时性计算机可读存储介质可以采用一个或多个计算机可读的介质的任意组合。计算机可读介质可以是计算机可读信号介质或者计算机可读存储介质。计算机可读存储介质例如可以是——但不限于——电、磁、光、电磁、红外线、或半导体的系统、装置或器件，或者任意以上的组合。计算机可读存储介质的更具体的例子(非穷举的列表)包括：具有一个或多个导线的电连接、便携式计算机磁盘、硬盘、随机存取存储器(RAM)、只读存储器(Read Only Memory；以下简称：ROM)、可擦式可编程只读存储器(Erasable Programmable Read Only Memory；以下简称：EPROM)或闪存、光纤、便携式紧凑磁盘只读存储器(CD-ROM)、光存 储器件、磁存储器件、或者上述的任意合适的组合。在本文件中，计算机可读存储介质可以是任何包含或存储程序的有形介质，该程序可以被指令执行系统、装置或者器件使用或者与其结合使用。
计算机可读的信号介质可以包括在基带中或者作为载波一部分传播的数据信号，其中承载了计算机可读的程序代码。这种传播的数据信号可以采用多种形式，包括——但不限于——电磁信号、光信号或上述的任意合适的组合。计算机可读的信号介质还可以是计算机可读存储介质以外的任何计算机可读介质，该计算机可读介质可以发送、传播或者传输用于由指令执行系统、装置或者器件使用或者与其结合使用的程序。
计算机可读介质上包含的程序代码可以用任何适当的介质传输，包括——但不限于——无线、电线、光缆、射频(Radio Frequency；以下简称：RF)等等，或者上述的任意合适的组合。
可以以一种或多种程序设计语言或其组合来编写用于执行本申请操作的计算机程序代码，所述程序设计语言包括面向对象的程序设计语言—诸如Java、Smalltalk、C++，还包括常规的过程式程序设计语言—诸如“C”语言或类似的程序设计语言。程序代码可以完全地在用户计算机上执行、部分地在用户计算机上执行、作为一个独立的软件包执行、部分在用户计算机上部分在远程计算机上执行、或者完全在远程计算机或服务器上执行。在涉及远程计算机的情形中，远程计算机可以通过任意种类的网络——包括局域网(Local Area Network；以下简称：LAN)或广域网(Wide Area Network；以下简称：WAN)连接到用户计算机，或者，可以连接到外部计算机(例如利用因特网服务提供商来通过因特网连接)。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同 实施例或示例的特征进行结合和组合。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
流程图中或在此以其他方式描述的任何过程或方法描述可以被理解为，表示包括一个或更多个用于实现定制逻辑功能或过程的步骤的可执行指令的代码的模块、片段或部分，并且本申请的优选实施方式的范围包括另外的实现，其中可以不按所示出或讨论的顺序，包括根据所涉及的功能按基本同时的方式或按相反的顺序，来执行功能，这应被本申请的实施例所属技术领域的技术人员所理解。
取决于语境，如在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”或“响应于检测”。类似地，取决于语境，短语“如果确定”或“如果检测(陈述的条件或事件)”可以被解释成为“当确定时”或“响应于确定”或“当检测(陈述的条件或事件)时”或“响应于检测(陈述的条件或事件)”。
需要说明的是，本申请实施例中所涉及的终端可以包括但不限于个人计算机(Personal Computer；以下简称：PC)、个人数字助理(Personal Digital Assistant；以下简称：PDA)、无线手持设备、平板电脑(Tablet Computer)、手机、MP3播放器、MP4播放器等。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如，多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元 中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机装置(可以是个人计算机，服务器，或者网络装置等)或处理器(Processor)执行本申请各个实施例所述方法的部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory；以下简称：ROM)、随机存取存储器(Random Access Memory；以下简称：RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本申请保护的范围之内。

Claims (15)

  1. 一种电池热失控的检测方法，其特征在于，包括：
    获取设置在电池包中的气压传感器的输出信号，以及获取所述电池包的参数信息；
    根据所述气压传感器的输出信号，确定所述气压传感器的状态信息；
    根据所述气压传感器的状态信息和所述电池包的参数信息，生成所述电池包发生热失控的告警信号。
  2. 根据权利要求1所述的方法，其特征在于，所述生成所述电池包发生热失控的告警信号之后，还包括：
    将所述电池包发生热失控的告警信号发送给装载有所述电池包的车辆的整车控制器。
  3. 根据权利要求1所述的方法，其特征在于，所述获取设置在电池包中的气压传感器的输出信号包括：
    当所述电池包的电池管理单元处于正常的工作状态时，获取设置在电池包中的气压传感器的输出电压；
    所述根据所述气压传感器的输出信号，确定所述气压传感器的状态信息包括：
    当所述气压传感器的输出电压小于预定的第一电压阈值时，确定所述气压传感器处于正常的工作状态；
    当所述气压传感器的输出电压大于或等于预定的第一电压阈值时，确定所述气压传感器处于气压告警状态；
    当所述气压传感器的输出电压处于预定的故障电压范围时，确定所述气压传感器处于故障状态。
  4. 根据权利要求1所述的方法，其特征在于，所述获取设置在电池包中的气压传感器的输出信号包括：
    当所述电池包的电池管理单元处于休眠状态时，获取设置在电池包中的气压传感器输出的逻辑信号；
    所述根据所述气压传感器的输出信号，确定所述气压传感器的状态信息包括：
    当所述逻辑信号为高电平信号时，所述电池包的电池管理单元被从所述休眠状态唤醒之后，确定所述气压传感器处于气压告警状态。
  5. 根据权利要求3或4所述的方法，其特征在于，所述根据所述气压传感器的状态信息和所述电池包的参数信息，生成所述电池包发生热失控的告警信号包括：
    当所述气压传感器处于气压告警状态时，在预定的检测时长内，如果所述电池包的参数信息中故障条件的任意一个或多个被满足，则生成所述电池包发生热失控的告警信号；所述电池包的参数信息中的故障条件包括：
    所述电池包单体电芯的最高温度大于预定的温度阈值的时长超过第一时长阈值；
    所述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值；
    所述电池包单体电芯的最高温度与最低温度的差值大于预定的差值阈值的时长超过第三时长阈值；
    所述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值；
    所述电池包的电压采样断路故障数大于或等于预定的故障数阈值；
    所述电池包的同一模组内的温度传感器完全失效；
    所述电池包的电池监控单元与所述电池管理单元之间的通讯完全丢失。
  6. 根据权利要求3或4所述的方法，其特征在于，所述根据所述气压传感器的状态信息和所述电池包的参数信息，生成所述电池包发生热失控的告警信号包括：
    当所述气压传感器处于正常的工作状态或故障状态时，如果所述电池包的参数信息中故障条件的任意一个或多个被满足，则生成所述电池包发生热失控的告警信号；所述电池包的参数信息中的故障条件包括：
    在预定的检测时长内，所述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值，并且所述电池包单体电芯的最高温度大于预定的温度阈值的时长超过第一时长阈值；
    在预定的检测时长内，所述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值，并且所述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值；
    在预定的检测时长内，所述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值，并且所述电池包单体电芯的最高温度与最低温度的差值大于预定的差值阈值的时长超过第三时长阈值；
    在预定的检测时长内，所述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值，并且所述电池包单体电芯的最高温度大于预定的温度阈值的时长超过第一时长阈值；
    在预定的检测时长内，所述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值，并且所述电池包单体电芯的最高温度与最低温度的差值大于预定的差值阈值的时长超过第三时长阈值；
    所述电池包的电压采样断路故障数大于或等于预定的故障数阈值，并且所述电池包单体电芯的最高温度大于预定的温度阈值的时长超过第一时长阈值；
    所述电池包的电压采样断路故障数大于或等于预定的故障数阈值，并且所述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值；
    所述电池包的电压采样断路故障数大于或等于预定的故障数阈值，并且所述电池包单体电芯的最高温度与最低温度的差值大于预定的差值阈值的时长超过第三时长阈值；
    所述电池包的电压采样断路故障数大于或等于预定的故障数阈值，并且所述电池包的同一模组内的温度传感器完全失效；
    所述电池包单体电芯的充电状态满足以下状态，并且持续时长大于或等于预定时长：所述电池包单体电芯的最大电压大于预定的第三电压阈值， 并且所述电池包单体电芯的荷电状态的真实值大于预定阈值，并且所述电池包单体电芯的充电电流大于或等于预定的充电电流阈值。
  7. 一种电池热失控的检测装置，其特征在于，包括：
    获取模块，用于获取设置在电池包中的气压传感器的输出信号，以及获取所述电池包中电池包的参数信息；
    确定模块，用于根据所述获取模块获取的气压传感器的输出信号，确定所述气压传感器的状态信息；
    生成模块，用于根据所述气压传感器的状态信息和所述获取模块获取的电池包的参数信息，生成所述电池包发生热失控的告警信号。
  8. 根据权利要求7所述的装置，其特征在于，还包括：
    发送模块，用于在所述生成模块生成所述电池包发生热失控的告警信号之后，将所述电池包发生热失控的告警信号发送给装载有所述电池包的车辆的整车控制器。
  9. 根据权利要求7所述的装置，其特征在于，
    所述获取模块，具体用于当所述电池包的电池管理单元处于正常的工作状态时，获取设置在电池包中的气压传感器的输出电压；
    所述确定模块，具体用于当所述气压传感器的输出电压小于预定的第一电压阈值时，确定所述气压传感器处于正常的工作状态；当所述气压传感器的输出电压大于或等于预定的第一电压阈值时，确定所述气压传感器处于气压告警状态；当所述气压传感器的输出电压处于预定的故障电压范围时，确定所述气压传感器处于故障状态。
  10. 根据权利要求7所述的装置，其特征在于，
    所述获取模块，具体用于当所述电池包的电池管理单元处于休眠状态时，获取设置在电池包中的气压传感器输出的逻辑信号；
    所述确定模块，具体用于当所述逻辑信号为高电平信号时，所述电池包的电池管理单元被从所述休眠状态唤醒之后，确定所述气压传感器处于气压告警状态。
  11. 根据权利要求9或10所述的装置，其特征在于，
    所述生成模块，具体用于当所述气压传感器处于气压告警状态时，在预定的检测时长内，如果所述电池包的参数信息中故障条件的任意一个或多个被满足，则生成所述电池包发生热失控的告警信号；所述电池包的参数信息中的故障条件包括：
    所述电池包单体电芯的最高温度大于预定的温度阈值的时长超过第一时长阈值；
    所述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值；
    所述电池包单体电芯的最高温度与最低温度的差值大于预定的差值阈值的时长超过第三时长阈值；
    所述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值；
    所述电池包的电压采样断路故障数大于或等于预定的故障数阈值；
    所述电池包的同一模组内的温度传感器完全失效；
    所述电池包的电池监控单元与所述电池管理单元之间的通讯完全丢失。
  12. 根据权利要求9或10所述的装置，其特征在于，
    所述生成模块，具体用于当所述气压传感器处于正常的工作状态或故障状态时，如果所述电池包的参数信息中故障条件的任意一个或多个被满足，则生成所述电池包发生热失控的告警信号；所述电池包的参数信息中的故障条件包括：
    在预定的检测时长内，所述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值，并且所述电池包单体电芯的最高温度大于预定的温度阈值的时长超过第一时长阈值；
    在预定的检测时长内，所述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值，并且所述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值；
    在预定的检测时长内，所述电池包单体电芯的最低电压小于预定的第二电压阈值的时长超过第四时长阈值，并且所述电池包单体电芯的最高温度与最低温度的差值大于预定的差值阈值的时长超过第三时长阈值；
    在预定的检测时长内，所述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值，并且所述电池包单体电芯的最高温度大于预定的温度阈值的时长超过第一时长阈值；
    在预定的检测时长内，所述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值，并且所述电池包单体电芯的最高温度与最低温度的差值大于预定的差值阈值的时长超过第三时长阈值；
    所述电池包的电压采样断路故障数大于或等于预定的故障数阈值，并且所述电池包单体电芯的最高温度大于预定的温度阈值的时长超过第一时长阈值；
    所述电池包的电压采样断路故障数大于或等于预定的故障数阈值，并且所述电池包单体电芯的温度随时间的升高率大于预定的升高率阈值的时长超过第二时长阈值；
    所述电池包的电压采样断路故障数大于或等于预定的故障数阈值，并且所述电池包单体电芯的最高温度与最低温度的差值大于预定的差值阈值的时长超过第三时长阈值；
    所述电池包的电压采样断路故障数大于或等于预定的故障数阈值，并且所述电池包单体电芯的同一模组内的温度传感器完全失效；
    所述电池包单体电芯的充电状态满足以下状态，并且持续时长大于或等于预定时长：所述电池包单体电芯的最大电压大于预定的第三电压阈值，并且所述电池包单体电芯的荷电状态的真实值大于预定阈值，并且所述电池包单体电芯的充电电流大于或等于预定的充电电流阈值。
  13. 一种电池管理单元，其特征在于，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时，实现如权利要求1-6中任一所述的方法。
  14. 一种电池热失控的检测系统，其特征在于，包括设置在电池包中的气压传感器和如权利要求13所述的电池管理单元。
  15. 一种非临时性计算机可读存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被处理器执行时实现如权利要求1-6中任一所述的方法。
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Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN113571782A (zh) * 2021-06-09 2021-10-29 东风汽车集团股份有限公司 一种电池热失控检测方法和装置
CN114161933A (zh) * 2021-11-24 2022-03-11 北京新能源汽车股份有限公司 电动汽车的热失控告警方法、装置、车辆及存储介质
WO2022227673A1 (zh) * 2021-04-28 2022-11-03 中国第一汽车股份有限公司 动力电池热失控监控装置、方法及动力电池系统

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110896233B (zh) * 2018-09-12 2021-07-30 宁德时代新能源科技股份有限公司 电池管理系统
CN113690497B (zh) * 2020-05-18 2023-11-14 好风光储能技术(成都)有限公司 一种电池的安全维护方法以及电池系统
CN111907329B (zh) * 2020-06-29 2022-04-29 东风汽车集团有限公司 可进行动力电池全时段热失控预警的监测系统及监测方法
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CN111907331A (zh) * 2020-07-23 2020-11-10 上海英恒电子有限公司 一种电动汽车电池包热失控预警系统及方法
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CN114069062A (zh) * 2020-08-05 2022-02-18 上海汽车集团股份有限公司 热失控监测装置，方法及存储介质
CN114074550A (zh) * 2020-08-10 2022-02-22 中兴通讯股份有限公司 车辆热失控处理方法、装置、车辆和计算机可读存储介质
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CN112068008B (zh) * 2020-09-11 2023-04-28 烟台创为新能源科技股份有限公司 一种用于锂电池热失控探测的多传感器测试系统与方法
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CN112510278A (zh) * 2020-11-30 2021-03-16 同济大学 一种车载锂离子动力电池组热失控检测及处理方法、系统
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CN112731169B (zh) * 2020-12-22 2022-08-23 上汽大众汽车有限公司 一种动力电池热失控全天候监测系统及方法
CN112838295B (zh) * 2020-12-30 2022-05-10 广州橙行智动汽车科技有限公司 电池加热系统检测方法、装置、车辆及存储介质
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DE102021125063B4 (de) * 2021-09-28 2023-06-15 Webasto SE Batterie und Batteriesteuerungsverfahren
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CN114290952A (zh) * 2021-12-16 2022-04-08 奇瑞新能源汽车股份有限公司 动力电池的热失控预警系统、方法、车辆及存储介质
WO2023115273A1 (zh) * 2021-12-20 2023-06-29 宁德时代新能源科技股份有限公司 电池监控系统、电池及用电装置
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WO2023225975A1 (zh) * 2022-05-27 2023-11-30 宁德时代新能源科技股份有限公司 热失控检测的方法和装置
WO2023245421A1 (zh) * 2022-06-21 2023-12-28 宁德时代新能源科技股份有限公司 域控制器、储能系统和储能系统的控制方法
CN115798159A (zh) * 2022-11-03 2023-03-14 中国第一汽车股份有限公司 一种电池故障报警方法、装置、电子设备和存储介质
CN115799690B (zh) * 2022-11-17 2023-12-26 厦门海辰储能科技股份有限公司 一种储能设备的运行方法及系统
CN115764030A (zh) * 2022-11-22 2023-03-07 小米汽车科技有限公司 动力电池的热失控预警方法、装置、存储介质及车辆
CN116853070A (zh) * 2023-08-22 2023-10-10 中国第一汽车股份有限公司 车辆电池的监控方法、装置、可读存储介质和车辆
CN116780009B (zh) * 2023-08-25 2024-04-12 宁德时代新能源科技股份有限公司 电池和用电装置
CN117346946B (zh) * 2023-11-29 2024-05-03 宁德时代新能源科技股份有限公司 气压采样电路、方法、电池管理系统及用电装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150194711A1 (en) * 2014-01-07 2015-07-09 Atieva, Inc. EV Battery Pack Multi-Mode Cooling System
CN106569142A (zh) * 2016-11-11 2017-04-19 华中科技大学 一种动力锂离子电池热失控预警系统及预警方法
CN207925620U (zh) * 2018-04-08 2018-09-28 江西优特汽车技术有限公司 一种动力电池热失控预警系统
CN109017363A (zh) * 2018-06-28 2018-12-18 清远市敬威能源开发有限公司 一种新能源汽车的电池热失控检测系统

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3741290B2 (ja) * 1996-03-29 2006-02-01 スズキ株式会社 圧力センサの故障診断制御装置
CN101732044B (zh) * 2008-11-13 2011-09-07 深圳迈瑞生物医疗电子股份有限公司 一种桥型压力传感器检测电路、检测方法及监护仪
CN201673006U (zh) * 2010-05-05 2010-12-15 重庆多耐达科技有限公司 压力传感器故障监测电路
CN201898180U (zh) * 2010-10-28 2011-07-13 中兴通讯股份有限公司 一种锂离子电池安全事故的预防装置及电子设备
US8168315B1 (en) * 2011-08-23 2012-05-01 Tesla Motors, Inc. Method for detecting battery thermal events via battery pack isolation monitoring
WO2014102768A1 (en) * 2012-12-31 2014-07-03 Given Imaging Ltd. Methods and systems for controlling an on/off switch
CN203377336U (zh) * 2013-06-04 2014-01-01 深圳市沃特玛电池有限公司 空气压力检测报警电路
CN103712741B (zh) * 2013-11-15 2016-01-20 上海新干通通信设备有限公司 线性压力传感器的校正方法
KR101913460B1 (ko) * 2015-06-10 2018-10-30 주식회사 엘지화학 배터리 셀 스웰링 감지 시스템 및 방법
CN206022563U (zh) * 2016-08-16 2017-03-15 河南锂动电源有限公司 一种具有气压检测报警功能的汽车动力电池
CN206067536U (zh) * 2016-10-08 2017-04-05 北京新能源汽车股份有限公司 动力电池系统安全监控系统及电动汽车
CN106532146A (zh) * 2016-10-09 2017-03-22 浙江超威创元实业有限公司 电动汽车动力电池箱漏液检测系统及其检测方法
CN206134865U (zh) * 2016-10-09 2017-04-26 浙江超威创元实业有限公司 一种电动汽车动力电池箱漏液检测系统
CN108631015B (zh) * 2017-03-20 2020-12-01 华为技术有限公司 电池包异常检测装置及电池包异常检测方法
CN107117155A (zh) * 2017-04-26 2017-09-01 北京新能源汽车股份有限公司 电动汽车的制动助力系统的故障检测方法、装置及汽车
CN107240724A (zh) * 2017-06-14 2017-10-10 无锡雨德智能物联网科技有限公司 蓄电池综合监测系统
CN107394297B (zh) * 2017-07-12 2023-04-07 成都紫外光电技术有限公司 一种复合式电池火灾报警系统
CN108519205A (zh) * 2018-05-17 2018-09-11 华霆（合肥）动力技术有限公司 电芯热失控检测系统及方法
CN109586252B (zh) * 2018-10-23 2020-11-17 深圳欣旺达智能科技有限公司 锂电的ic保护方法和装置
CN109585946A (zh) * 2018-11-30 2019-04-05 清华大学 锂离子电池组热失控处理系统与方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150194711A1 (en) * 2014-01-07 2015-07-09 Atieva, Inc. EV Battery Pack Multi-Mode Cooling System
CN106569142A (zh) * 2016-11-11 2017-04-19 华中科技大学 一种动力锂离子电池热失控预警系统及预警方法
CN207925620U (zh) * 2018-04-08 2018-09-28 江西优特汽车技术有限公司 一种动力电池热失控预警系统
CN109017363A (zh) * 2018-06-28 2018-12-18 清远市敬威能源开发有限公司 一种新能源汽车的电池热失控检测系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3800725A4

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022227673A1 (zh) * 2021-04-28 2022-11-03 中国第一汽车股份有限公司 动力电池热失控监控装置、方法及动力电池系统
CN113571782A (zh) * 2021-06-09 2021-10-29 东风汽车集团股份有限公司 一种电池热失控检测方法和装置
CN114161933A (zh) * 2021-11-24 2022-03-11 北京新能源汽车股份有限公司 电动汽车的热失控告警方法、装置、车辆及存储介质

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