CN115079651A - Power battery laboratory fault processing method and device - Google Patents

Power battery laboratory fault processing method and device Download PDF

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Publication number
CN115079651A
CN115079651A CN202210705761.1A CN202210705761A CN115079651A CN 115079651 A CN115079651 A CN 115079651A CN 202210705761 A CN202210705761 A CN 202210705761A CN 115079651 A CN115079651 A CN 115079651A
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fault
laboratory
battery
level
alarm
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冯旭翀
杨焕璋
安茂栋
黄谢鑫
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GAC Aion New Energy Automobile Co Ltd
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GAC Aion New Energy Automobile Co Ltd
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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/418Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18Status alarms
    • G08B21/185Electrical failure alarms
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B7/00Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
    • G08B7/06Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
    • G08B7/064Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources indicating houses needing emergency help, e.g. with a flashing light or sound

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  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Quality & Reliability (AREA)
  • Automation & Control Theory (AREA)
  • Secondary Cells (AREA)

Abstract

The application provides a power battery laboratory fault processing method and a device, and the power battery laboratory fault processing method comprises the following steps: receiving a fault alarm signal output by a power battery laboratory; determining the alarm grade of the fault alarm signal; determining a fault processing flow according to the alarm grade; and carrying out fault processing according to the fault processing flow. Therefore, by implementing the implementation mode, the fault can be automatically monitored, the fault classification judgment can be automatically carried out, the corresponding automatic processing can be carried out, the safety is high, the fault processing effect is good, and the safety of a power battery laboratory is further ensured.

Description

Power battery laboratory fault processing method and device
Technical Field
The application relates to the technical field of batteries, in particular to a power battery laboratory fault processing method and device.
Background
The new energy automobile industry develops rapidly. The lithium ion power battery, as a core technology of a new energy automobile power propulsion system, is highly concerned and widely researched by the industry and academia, and achieves certain technological achievements. The existing power battery system laboratory scheme safety protection still needs to rely on an operator to actively judge whether corresponding measures should be taken and how to safely take the corresponding measures under the condition that the power battery test is abnormal. Therefore, the conventional method needs manual fault judgment, manually processes the fault, and has low safety and poor fault processing effect.
Disclosure of Invention
The purpose of the embodiment of the application is to provide a power battery laboratory fault processing method and device, which can automatically monitor faults, automatically perform fault classification judgment and perform corresponding automatic processing, have high safety and good fault processing effect, and further are beneficial to ensuring the safety of a power battery laboratory.
The embodiment of the application provides a power battery laboratory fault processing method in a first aspect, which comprises the following steps:
receiving a fault alarm signal output by a power battery laboratory;
determining an alarm level of the fault alarm signal;
determining a fault processing flow according to the alarm grade;
and carrying out fault processing according to the fault processing flow.
In the implementation process, the method can preferentially receive the fault alarm signal output by the power battery laboratory; then determining the alarm grade of the fault alarm signal; then determining a fault processing flow according to the alarm level; and finally, carrying out fault processing according to a fault processing flow. Therefore, by the implementation of the implementation mode, faults can be automatically monitored, fault grading judgment can be automatically carried out, corresponding automatic processing can be carried out, the safety is high, the fault processing effect is good, and the safety of a power battery laboratory is further guaranteed.
Further, the determining the fault processing flow according to the alarm level includes:
when the alarm level is first level, determining that the fault processing flow is first level fault processing flow;
when the alarm level is the second level, determining that the fault processing flow is the second level fault processing flow;
and when the alarm level is in a third level, determining that the fault processing flow is a third-level fault processing flow.
Further, the performing fault processing according to the fault processing flow includes:
controlling the power battery laboratory to enter a fault processing mode according to the fault processing flow;
under the fault processing mode, controlling the power battery laboratory to pop up an alarm information dialog box and outputting acousto-optic alarm information;
controlling the power battery laboratory to execute fault processing operation according to the fault processing flow;
judging whether the test equipment state of the power battery laboratory is a fault reset state or not;
and if so, controlling the power battery laboratory to recover the battery test mode.
Further, the controlling the power battery laboratory to execute the fault handling operation according to the fault handling process comprises:
when the alarm level is first-level, controlling the current of a battery simulator in the power battery laboratory to be reduced to 0 according to a preset first rate, controlling the voltage of the battery simulator to be reduced to 0 according to a preset second rate, and controlling the output power of the battery simulator to be reduced to 0 according to a preset third rate;
controlling a walk-in environment box in the power battery laboratory to recover the temperature in the walk-in environment box to be within a first preset temperature range according to a fourth speed;
and controlling the cooling circulating water machine in the power battery laboratory to keep the original running state.
Further, the controlling the power battery laboratory to execute the fault handling operation according to the fault handling process comprises:
when the alarm level is two-level, sending a first emergency stop instruction to a redundant voltage monitoring device so that the redundant voltage monitoring device can disconnect a high-voltage relay according to the first emergency stop instruction;
sending a second emergency stop instruction to a battery pack management system, controlling the battery simulator to disconnect an output relay, and controlling the output current and the output voltage of the battery simulator to be reduced to 0 at the same time;
controlling a walk-in environment box in the power battery laboratory to recover the temperature in the walk-in environment box to a second preset temperature range according to a fifth rate;
and controlling the cooling circulating water machine in the power battery laboratory to shut down.
Further, the controlling the power battery laboratory to execute the fault handling operation according to the fault handling process comprises:
when the alarm level is three, controlling an accident exhaust system in the power battery laboratory to start;
sending a third emergency stop instruction to a redundant voltage monitoring device so that the redundant voltage monitoring device can disconnect a high-voltage relay according to the third emergency stop instruction;
sending a fourth emergency stop instruction to a battery pack management system, controlling the battery simulator to disconnect an output relay, and controlling the output current and the output voltage of the battery simulator to be reduced to 0 at the same time;
controlling the battery simulator and a walk-in type environment box in the power battery laboratory to shut down;
opening a fire sprinkling system of the walk-in environment box to enable the fire sprinkling system to perform fire sprinkling and extinguishment;
and controlling the cooling circulating water machine in the power battery laboratory to shut down.
A second aspect of the embodiments of the present application provides a power battery laboratory fault handling device, which includes:
the receiving unit is used for receiving fault alarm signals output by a power battery laboratory;
a first determination unit for determining an alarm level of the malfunction alarm signal;
the second determining unit is used for determining a fault processing flow according to the alarm level;
and the fault processing unit is used for carrying out fault processing according to the fault processing flow.
In the implementation process, the power battery laboratory fault processing device can receive a fault alarm signal output by a power battery laboratory through a receiving unit; determining the alarm level of the fault alarm signal through a first determination unit; determining a fault processing flow according to the alarm level by a second determining unit; and finally, carrying out fault processing according to the fault processing flow through a fault processing unit. Therefore, by implementing the implementation mode, the fault can be automatically monitored, the fault classification judgment can be automatically carried out, the corresponding automatic processing can be carried out, the safety is high, the fault processing effect is good, and the safety of a power battery laboratory is further ensured.
Further, the second determining unit is specifically configured to determine that the fault processing flow is a primary fault processing flow when the alarm level is a primary level; when the alarm level is the second level, determining that the fault processing flow is the second level fault processing flow; and when the alarm level is in a third level, determining that the fault processing flow is a third-level fault processing flow.
A third aspect of the embodiments of the present application provides an electronic device, including a memory and a processor, where the memory is used to store a computer program, and the processor runs the computer program to make the electronic device execute the power battery laboratory fault processing method according to any one of the first aspect of the embodiments of the present application.
A fourth aspect of the embodiments of the present application provides a computer-readable storage medium, which stores computer program instructions, and when the computer program instructions are read and executed by a processor, the computer program instructions execute the power battery laboratory fault processing method according to any one of the first aspect of the embodiments of the present application.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic flowchart of a power battery laboratory fault handling method according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a power battery laboratory fault handling apparatus according to an embodiment of the present disclosure;
FIG. 3 is a logic flow diagram of safety control for a power battery system testing laboratory according to an embodiment of the present disclosure;
FIG. 4 is a flow chart of a first-level alarm logic determination in a power battery system testing laboratory according to an embodiment of the present disclosure;
FIG. 5 is a flow chart of a secondary alarm logic determination in a power battery system testing laboratory according to an embodiment of the present disclosure;
FIG. 6 is a flow chart of a three-level alarm logic determination in a power battery system testing laboratory according to an embodiment of the present disclosure;
FIG. 7 is a flow chart of a power battery system testing laboratory primary alarm device process provided in the embodiments of the present application;
fig. 8 is a processing flow chart of a secondary alarm device in a power battery system testing laboratory according to the embodiment of the present application;
fig. 9 is a processing flow chart of a three-level alarm device in a power battery system testing laboratory according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Example 1
Referring to fig. 1, fig. 1 is a schematic flow chart of a power battery laboratory fault handling method according to an embodiment of the present disclosure. The power battery laboratory fault processing method comprises the following steps:
and S101, receiving a fault alarm signal output by a power battery laboratory.
In this embodiment, the following explanation is made for the alarm signal corresponding to the first-level alarm level:
1. overvoltage or undervoltage of the total voltage of the battery pack is alarmed in a level 1 (Voltmax1, Voltmin 1): the fault is set according to the upper limit value and the lower line value of the total voltage of the battery pack, the fault is triggered when the total voltage of the battery pack detected by the battery simulator is greater than the maximum total voltage allowed by the battery pack or the total voltage of the battery pack detected by the battery simulator is less than the minimum total voltage allowed by the battery pack, the fault is recovered when the total voltage of the battery pack allowed by the battery simulator is less than or equal to the total voltage detected by the battery simulator, the total voltage of the battery pack is less than or equal to the maximum total voltage allowed by the battery pack, and the fault confirmation and recovery time is 2000 ms.
2. Battery pack charging current overcurrent level 1 alarm (Currmax 1): setting according to the upper limit value of a charging current MAP table of a battery pack, triggering the fault when the output current of the battery simulator is larger than the maximum charging current value allowed by the battery pack current MAP table, recovering the fault when the output current of the battery simulator is smaller than or equal to the maximum charging current value allowed by the battery pack current MAP table, and confirming and recovering the fault within 5000 ms.
3. Battery pack charging power overload level 1 alert (Powermax 1): the method comprises the steps of setting according to the maximum allowable charging power of a battery pack, triggering a fault when the output power of a battery simulator is larger than the maximum allowable charging power of the battery pack, recovering the fault when the output power of the battery simulator is smaller than or equal to the maximum allowable charging power of the battery pack, and ensuring and recovering the fault for 5000 ms.
4. Battery simulator failure (E-storage Fault): when serious faults occur in the battery simulator to influence the development of normal tests, the fault position of the battery simulator is 1, if the faults are recovered, the fault position of the battery simulator is 0, and the fault confirmation and recovery time is 2000 ms.
5. Battery simulator Watchdog communication failure (E-storage Watchdog Fault): when the communication between the battery simulator and the battery laboratory upper computer control system is lost, the fault is triggered, the fault is eliminated after the communication is recovered, and the fault confirmation and recovery time is 200 ms.
6. Class 1 alarm of excessive temperature inside walk-in environmental box (reactive Chamber Tempmax 1): the fault is triggered when the temperature in the walk-in environment box is greater than the set upper limit value of the walk-in environment box, the fault is recovered when the temperature in the walk-in environment box is less than or equal to the set upper limit value of the walk-in environment box, and the fault confirmation and recovery time is 5000 ms.
7. Step-in environmental Box Fault (simulation Chamber Fault): when serious faults occur inside the walk-in type environment box to influence the development of normal tests, the fault position of the walk-in type environment box is 1, if the faults are recovered, the fault position of the walk-in type environment box is 0, and the fault confirmation and recovery time is 2000 ms.
8. Walk-in environment box Watchdog communication failure (clearance Chamber Fault): when the communication between the walk-in environment box and the battery laboratory upper computer control system is lost, the fault is triggered, the fault is eliminated after the communication is recovered, and the fault confirmation and recovery time is 500 ms.
9. Cooling liquid flow of cooling circulating water machine overflowing 1-level alarm (Coolant Flowmax 1): and when the flow of the cooling liquid of the cooling circulating water machine is greater than the maximum flow of the cooling liquid of the battery pack, the fault is triggered, when the flow of the cooling liquid of the cooling circulating water machine is less than or equal to the maximum flow of the cooling liquid of the battery pack, the fault is recovered, and the fault confirmation and recovery time is 5000 ms.
10. Cooling circulation water machine cooling liquid temperature over-temperature 1 grade alarm (Coolant Tempmax 1): and when the temperature of the cooling liquid of the cooling circulating water machine is greater than the allowable highest temperature of the cooling liquid of the battery pack, the fault is triggered, when the temperature of the cooling liquid of the cooling circulating water machine is less than or equal to the allowable highest temperature of the cooling liquid of the battery pack, the fault is recovered, and the fault confirmation and recovery time is 5000 ms.
11. Cooling circulation water machine failure (Coolant Condition System Fault): when the cooling circulating water machine has serious faults and cannot normally run, the fault position 1 of the cooling circulating water machine is detected, if the faults are recovered, the fault position 0 of the cooling circulating water machine is detected, and the fault confirmation and recovery time is 2000 ms.
12. Cold circulation water machine Watchdog communication failure (Coolant Condition System Watchdog Fault): when the communication between the cooling circulating water machine and the battery laboratory upper computer control system is lost, the fault is triggered, the fault is eliminated after the communication is recovered, and the fault confirmation and recovery time is 500 ms.
13. Lab Door open (Door Switch off): when a battery laboratory enters a battery test mode, an alarm is triggered when a door is abnormally opened, the alarm is recovered after the door is closed, and the alarm confirmation and recovery time is 2000 ms.
14. BMS failure (BMS ErrLvl): the alarm is triggered when the BMS suffers a severe level 4 failure, and after the level 4 failure is removed, the alarm is recovered, and the alarm confirmation and recovery time is 200 ms.
15. Cell voltage overvoltage alarm (CellVolt > CellVoltMax or CellVolt < CellVoltMin): the fault is triggered when the cell voltage is greater than the cell allowable highest voltage or less than the cell allowable lowest voltage, and the fault is confirmed and recovered for 2000ms when the cell allowable lowest voltage is less than or equal to the cell voltage and less than or equal to the cell allowable highest voltage.
16. Battery temperature over-temperature alarm (BattTemp > BattTempmax): and triggering the fault when the cell temperature is greater than the maximum allowable cell temperature, recovering the fault when the cell temperature is less than or equal to the maximum allowable cell temperature, and confirming and recovering the fault for 2000 ms.
17. BMS communication Counter alarm (BMS rolling Counter Fault): the failure is triggered when the BMS communication counter does not count in the order from 0 to 15, and the failure is recovered after the calculator recovers the calculation from 0 to 15, the failure confirmation and recovery time is 100 ms.
In this embodiment, the following explanation is made for the alarm signal corresponding to the secondary alarm level:
1. the communication between the battery laboratory upper Computer control System and the safety control System is interrupted (Host Computer System Watchdog Fault): the fault is triggered when the communication between the upper computer control system of the battery laboratory and the safety control system of the battery laboratory is interrupted, and the fault is recovered when the two systems recover normal communication, and the fault confirmation and recovery time is 500 ms.
2. Redundant Voltage Monitoring Device Watchdog communication failure (Redundant Voltage Monitoring Device Watchdog Fault): the fault is triggered when the communication between the redundant voltage monitoring device and the watchdog of the battery laboratory safety control system is interrupted, and the fault is recovered after the communication between the watchdog is recovered, wherein the fault confirmation and recovery time is 500 ms.
3. Fire control System Watchdog communication failure (Fire Alarm System Watchdog Fault): the failure is triggered when the communication between the fire control system and the watchdog of the battery laboratory safety control system is interrupted, and the failure is recovered after the communication failure of the watchdog is recovered, wherein the failure confirmation and recovery time is 500 ms.
4. Overvoltage or undervoltage 2-level alarm of total voltage of battery pack (Voltmax2, Voltmin 2): when the battery simulator detects that the total voltage of the battery pack is larger than Voltmax1+2V or the battery simulator detects that the total voltage of the battery pack is smaller than Voltmin1-2V, the fault is triggered, when the Voltmin1-2V is smaller than or equal to the Voltmax1+2V, the fault is recovered, and the fault confirmation and recovery time is 2000 ms.
5. Battery pack charging current over-current level 2 alarm (Currmax 2): the fault is triggered when the output current of the battery simulator is larger than 1.1 multiplied by Currmax1+5A, the fault is recovered when the output current of the battery simulator is smaller than or equal to 1.1 multiplied by Currmax1+5A, and the fault confirmation and recovery time is 2000 ms.
6. Battery pack charging power overload level 2 alert (Powermax 2): the fault is triggered when the output power of the battery simulator is larger than Powermax1+20W, the fault is recovered when the output power of the battery simulator is smaller than or equal to Powermax1+20W, and the fault confirmation and recovery time is 2000 ms.
7. Class 2 alarm of over-temperature in walk-in environmental Chamber (clinical Chamber Tempmax 2): the fault is triggered when the temperature in the walk-in environment box is greater than Climatic Chamber Tempmax1+2 ℃, the fault is recovered when the temperature in the walk-in environment box is less than or equal to Climatic Chamber Tempmax1+2 ℃, and the fault confirmation and recovery time is 2000 ms.
8. Cooling liquid flow of cooling circulating water machine overflowing 2-level alarm (Coolant Flowmax 2): the fault is triggered when the cooling liquid flow of the cooling circulating water machine is larger than CoolantFlowmax1+2L/min, the fault is recovered when the cooling liquid flow of the cooling circulating water machine is smaller than or equal to CoolantFlowmax1+2L/min, and the fault confirmation and recovery time is 5000 ms.
9. Cooling water temperature over-temperature 2-level alarm (Coolant Tempmax 2): the fault is triggered when the temperature of the cooling liquid of the cooling circulating water machine is greater than CoolantTempmax1+2 ℃, the fault is recovered when the temperature of the cooling liquid of the cooling circulating water machine is less than or equal to CoolantTempmax1+2 ℃, and the fault recovery and confirmation time is 5000 ms.
10. Battery pack total voltage overvoltage redundancy monitoring alarm (Voltmax 3): the fault is triggered when the redundant voltage monitoring device detects that the total voltage of the battery pack is larger than Voltmax2+2V, the fault is recovered when the redundant voltage monitoring device detects that the total voltage of the battery pack is smaller than or equal to Voltmax2+2V, and the fault recovery and confirmation time is 2000 ms.
In this embodiment, the following explanation is made for the alarm signal of the third-level alarm level:
1. fire Alarm signal (Fire Detection Alarm): when the battery pack fires to generate high-temperature heat radiation and a large amount of toxic gas, the smoke-sensitive and temperature-sensitive detector is triggered to alarm, when the battery pack fire is extinguished, the alarm is recovered, and the alarm confirmation and recovery time is 2000 ms.
2. Pressing down an Emergency Stop switch of the battery simulator (E-Storage Emergency-Stop): the fault is triggered when the battery simulator scram switch is depressed and is restored when the scram switch is released.
3. The Emergency Stop switch of the step-in environmental box is pressed (simulation Chamber Emergency-Stop): the fault is triggered when the walk-in environmental chamber crash stop switch is depressed and the fault is restored when the crash stop switch is released.
4. The cooling circulating water machine Emergency Stop switch is pressed (Coolant Condition System Emergency-Stop): the fault is triggered when the emergency stop switch of the cooling circulation water machine is pressed, and the fault is recovered when the emergency stop switch is released.
And S102, determining the alarm grade of the fault alarm signal.
In this embodiment, the state judgment condition of the power battery system testing laboratory is 0 × Y0+1 × Y1+2 × Y2+4 × Y3, and the specific Fault judgment process of the battery laboratory is shown in fig. 3.
In this embodiment, when the BattLab _ Fault _ Flag is 0, it represents that the battery system testing laboratory has no Fault, and the battery testing mode can be normally entered. When the BattLab _ Fault _ Flag is 1, the upper computer control system of the battery system testing laboratory triggers a primary alarm Fault, and a primary Fault processing mode of the battery system testing laboratory needs to be entered for processing. And when the BattLab _ Fault _ Flag is 2, the safety control system of the battery system testing laboratory triggers a secondary alarm Fault, and a secondary Fault processing mode of the battery system testing laboratory needs to be entered for processing. When the BattLab _ Fault _ Flag is 4, the safety control system of the battery system testing laboratory triggers the three-level alarm Fault, and the three-level alarm Fault needs to be processed in a three-Fault processing mode of the battery system testing laboratory. Wherein, Y 0 No fault flag bit, Y, for battery system test laboratory 1 Flag bit, Y, representing a first-level failure alarm in a battery system testing laboratory 2 Flag bit, Y, representing a secondary failure alarm in a battery system testing laboratory 3 And the flag bit represents a three-level fault alarm of a battery system testing laboratory.
In this embodiment, the battery system testing laboratory first-level fault alarm flag bit Y 1 The condition of setting 1 is as follows: one of the devices or the battery pack such as the battery simulator, the walk-in environment box, the cooling circulating water machine, the battery system testing laboratory door, the BMS and the like triggers a primary alarm fault, and specific primary fault triggering logic is shown in detail in FIG. 4.
Wherein, the battery simulator primary alarm signal: voltmax1, Voltmin1, Currmax1, Powermax1, E-Storage factory, E-Storage kitchen factory;
step-in environment box primary alarm signal: climatic Chamber Tempmax1, Climatic Chamber Fault, Climatic Chamber Watchdog Fault;
primary alarm signal of cooling circulating water machine: CoolantFlowmax1, CoolantTempmax1, Coolant Condition System Fault, Coolant Condition System kitchen Fault;
battery system test laboratory door one-level alarm signal: door Switch off;
BMS primary alarm: CellVoltMax, CellVoltMin, BattTempMax, ErrLvl, BMS Rolling Counter.
In this embodiment, the battery system testing laboratory secondary failure alarm flag bit Y 2 The condition of setting 1 is as follows: one of the equipment such as the battery simulator, the walk-in environment box, the cooling circulating water machine, the redundant voltage monitoring device and the fire control system triggers a secondary alarm fault, and the specific secondary fault triggering logic is shown in detail in figure 5.
Wherein, the battery simulator secondary alarm signal: voltmax2, Voltmin2, Currmax2, Powermax 2;
step-in environment box secondary alarm signal: climatic Chamber Tempmax 2;
secondary alarm signals of the cooling circulating water machine: coolant Flowmax2, Coolant Tempmax 2;
secondary alarm signal of redundant voltage monitoring device: voltmax3, reduce Voltage Monitoring Device Watchdog Fault;
the battery laboratory upper computer control system communicates with the safety control system for a secondary alarm signal: host Computer System Watchdog Fault.
Fire control system secondary alarm signal: fire Alarm System Watchdog Fault.
In the embodiment, the battery system testing laboratory three-level fault alarm zone bit Y 3 The condition of setting 1 is as follows: when one of the emergency stop switches of the battery simulator, the walk-in environment box and the cooling circulating water machine is pressed down and the smoke or temperature sensor of the fire extinguishing system reaches a trigger threshold value for alarming, a battery system testing laboratory triggers a three-level alarm fault, and specific three-level fault triggering logic is shown in detail in figure 6.
Wherein, the tertiary alarm signal of battery simulator: E-Storage emery-Stop;
three-level alarm signal of step-in environment case: a clinical Chamber emery-Stop;
and (3) three-level alarm signals of the cooling circulating water machine: (ii) a Coolant Condition System expression-Stop;
fire control system tertiary alarm signal: fire Detection Alarm.
S103, when the alarm level is a first level, determining that the fault processing flow is a first level fault processing flow; when the alarm level is the second level, determining that the fault processing flow is the second level fault processing flow; and when the alarm level is in the third level, determining that the fault processing flow is the third level fault processing flow.
And S104, controlling the brake force battery laboratory to enter a fault processing mode according to the fault processing flow.
And S105, under the fault processing mode, controlling the power battery laboratory to pop up an alarm information dialog box and outputting acousto-optic alarm information.
And S106, controlling the brake force battery laboratory to execute fault processing operation according to the fault processing flow.
Referring to fig. 7, as an alternative embodiment, the method for performing the fault handling operation according to the fault handling flow programmed to the brake force battery laboratory includes:
when the alarm level is first level, controlling the current of a battery simulator in a power battery laboratory to be reduced to 0 according to a preset first rate, controlling the voltage of the battery simulator to be reduced to 0 according to a preset second rate, and controlling the output power of the battery simulator to be reduced to 0 according to a preset third rate;
controlling a walk-in environment box in a power battery laboratory to recover the temperature in the walk-in environment box to be within a first preset temperature range according to a fourth speed;
and controlling the cooling circulating water machine in the power battery laboratory to keep the original running state.
In this embodiment, the first-level alarm fault processing flow is exemplified as follows:
after a battery system testing laboratory enters a primary fault processing mode, a specific alarm information dialog box is popped up on a host computer control system of the battery laboratory, a sound-light alarm of the laboratory sounds, then the output current of a battery simulator is reduced to 0 according to the slope of 1A/ms, then the output voltage of the battery simulator is reduced to 0 according to the rate of 2V/ms, and the output power of the battery simulator is reduced to 0. The temperature in the box is recovered to 25 +/-5 ℃ in the walk-in environment box according to the speed of 0.5 ℃/min. The cooling circulating water machine keeps the original running state. When a tester carries out troubleshooting and resetting on the test equipment, the upper computer control system of the battery laboratory judges the state of the test equipment again, if the Fault is reset (BattLab _ Fault _ Flag is 0), the battery laboratory recovers the battery test mode, and if the battery laboratory still has a primary alarm Fault (BattLab _ Fault _ Flag is 1), the primary alarm processing flow is repeated.
Referring to fig. 8, as an alternative embodiment, the brake force battery laboratory is programmed to perform the fault handling operation according to the fault handling flow, which includes:
when the alarm level is two-level, a first emergency stop instruction is sent to the redundant voltage monitoring device, so that the redundant voltage monitoring device can disconnect the high-voltage relay according to the first emergency stop instruction;
sending a second emergency stop instruction to a battery pack management system, controlling a battery simulator to disconnect an output relay, and controlling the output current and the output voltage of the battery simulator to be reduced to 0 at the same time;
controlling a walk-in environment box in the power battery laboratory to recover the temperature in the walk-in environment box to a second preset temperature range according to a fifth speed;
and controlling the cooling circulating water machine in the power battery laboratory to shut down.
In this embodiment, the secondary alarm fault processing flow is as follows:
after a battery system testing laboratory enters a secondary fault processing mode, a specific alarm information dialog box is popped up on a battery laboratory safety control system, a laboratory audible and visual alarm sounds, then a battery simulator sends an emergency stop instruction to a battery pack BMS through a battery laboratory upper computer control system, the battery simulator disconnects an output relay, output current and output voltage are reduced to 0 at the same time within 30ms, and the battery simulator is automatically shut down after 5s of delay. Meanwhile, the safety control system of the battery laboratory sends an emergency stop instruction to the redundant voltage monitoring device, and the redundant voltage monitoring device switches off the high-voltage relay within 30 ms. Then the temperature in the walk-in environment box is recovered to 25 +/-5 ℃ at the speed of 0.5 ℃/min, and the walk-in environment box is shut down after 5s of delay. And then the cooling circulating water machine is shut down. After a tester conducts troubleshooting and resetting on the testing equipment, the upper computer control system of the battery laboratory judges the state of the testing equipment again, if the Fault is reset (BattLab _ Fault _ Flag is 0), the battery laboratory recovers the battery testing mode, and if a secondary alarm Fault still exists in the battery laboratory (BattLab _ Fault _ Flag is 2), the secondary alarm processing flow is repeated.
Referring to fig. 9, as an alternative embodiment, the method for performing the fault handling operation according to the fault handling flow programmed to the brake force battery laboratory includes:
when the alarm level is three, controlling an accident exhaust system in a power battery laboratory to start;
sending a third emergency stop instruction to the redundant voltage monitoring device so that the redundant voltage monitoring device can disconnect the high-voltage relay according to the third emergency stop instruction;
sending a fourth emergency stop instruction to a battery pack management system, controlling a battery simulator to disconnect an output relay, and controlling the output current and the output voltage of the battery simulator to be reduced to 0 at the same time;
controlling a battery simulator and a walk-in type environment box in a power battery laboratory to shut down;
opening the fire sprinkling system of the step-in type environment box to enable the fire sprinkling system to spray water for fire extinguishing;
and controlling the cooling water circulator in the power battery laboratory to shut down.
In this embodiment, an example of a three-level alarm fault processing flow is as follows:
after a battery system testing laboratory enters a three-level fault handling mode, a specific alarm information dialog box is popped up on a battery laboratory safety control system, a laboratory audible and visual alarm sounds, and a laboratory accident exhaust system is automatically started. And then the battery simulator sends an emergency stop instruction to the battery pack BMS through a battery laboratory upper computer control system, the battery simulator disconnects the output relay, the output current and the output voltage are simultaneously reduced to 0 within 30ms, and the battery simulator is automatically shut down after 5s of delay. Meanwhile, the safety control system of the battery laboratory sends an emergency stop instruction to the redundant voltage monitoring device, and the redundant voltage monitoring device switches off the high-voltage relay within 30 ms. Then the walk-in environment box is shut down and the spraying fire-extinguishing system is automatically started, the environment box forms a 0.5m deep water pool within 5min, the battery pack is submerged for fire extinguishing, and then the cooling circulating water machine is shut down. After a tester conducts troubleshooting and resetting on the testing equipment, the upper computer control system of the battery laboratory judges the state of the testing equipment again, if the Fault is reset (BattLab _ Fault _ Flag is 0), the battery laboratory recovers the battery testing mode, and if the battery laboratory still has a three-level alarm Fault (BattLab _ Fault _ Flag is 4), the three-level alarm processing flow is repeated.
S107, judging whether the test equipment state of the power battery laboratory is a fault reset state, if so, executing a step S108; if not, the flow is ended.
And S108, controlling the power battery laboratory to recover the battery test mode.
In this embodiment, the execution subject of the method may be a computing device such as a computer and a server, and is not limited in this embodiment.
In the embodiment, the safety protection of the laboratory scheme of the conventional power battery system mainly comprises 2 layers, namely, BMS protection on a battery pack, wherein the BMS limits the charging and discharging voltage, current and temperature value of the battery pack by compiling a proper safety control program and a safety fault threshold value, and limits and protects the charging and discharging current of the battery pack according to different fault levels; the upper computer of the battery simulator equipment body controls program protection, reads voltage values, current values and temperature values of the battery pack through the BMS, sets reasonable protection threshold values through the upper computer, and stops the battery simulator to charge and discharge the battery pack when parameters of the battery pack exceed the threshold values. Third, current battery laboratory often digs a pit retaining in the laboratory inside, when the battery catches fire, carries to the pit inside through artifical fork handlebar battery package and submerges and put out a fire.
The improvement direction of the scheme is as follows: the method has the advantages that firstly, the redundant voltage monitoring device of the active safety protection measure is added on the basis of the original safety protection, so that the situation that the power battery pack is overcharged can be prevented under the condition that the safety protection measure of the upper computer system of the battery simulator is invalid and the safety protection strategy of the battery pack BMS software has defects; secondly, all faults of the existing power battery system test laboratory are combed again, and the condition of triggering each fault, the condition of recovering the fault and the time of triggering and recovering the fault are determined. The laboratory is then classified according to the severity and destructive influence degree of the battery laboratory fault, and the logic conditions for triggering the first-level, second-level and third-level alarms are described and defined in detail. And thirdly, detailed definitions are carried out on the primary, secondary and tertiary alarm fault handling processes of the battery system testing laboratory. And fourthly, when the power battery pack is in a fire, the battery pack is in an extremely unstable thermal runaway state, and a forklift is used for transporting the power battery pack, so that serious safety risks exist. The TPO waterproofing membrane is laid to this scheme consideration utilization step-in environment incasement body, the scheme that increases breakwater and cooperation sprayed fire extinguishing systems can form the pond in the environment incasement, submerges the battery package and puts out a fire, when both having guaranteed the fire extinguishing effect, has stopped the safe risk of personnel's operation again.
Therefore, the power battery laboratory fault processing method described in the embodiment can automatically monitor faults, automatically perform fault classification judgment and perform corresponding automatic processing, is high in safety and good in fault processing effect, and further is beneficial to guaranteeing the safety of the power battery laboratory.
Example 2
Please refer to fig. 2, fig. 2 is a schematic structural diagram of a power battery laboratory fault handling apparatus according to an embodiment of the present disclosure. As shown in fig. 2, the power battery laboratory fault handling device includes:
the receiving unit 210 is used for receiving a fault alarm signal output by a power battery laboratory;
a first determining unit 220 for determining an alarm level of the malfunction alarm signal;
a second determining unit 230, configured to determine a fault handling procedure according to the alarm level;
and a failure processing unit 240, configured to perform failure processing according to a failure processing flow.
As an optional implementation manner, the second determining unit 230 is specifically configured to determine that the fault processing flow is a primary fault processing flow when the alarm level is a primary level; when the alarm level is second level, determining that the fault processing flow is second level fault processing flow; and when the alarm level is in the third level, determining that the fault processing flow is the third level fault processing flow.
As an alternative embodiment, the fault handling unit 240 includes:
the control subunit 241 is used for controlling the power battery laboratory to enter a fault processing mode according to the fault processing flow;
the control subunit 241 is further configured to, in the fault handling mode, control the power battery laboratory to pop up an alarm information dialog box, and output sound and light alarm information;
the control subunit 241 is further configured to control the brake-force battery laboratory to perform a fault handling operation according to the fault handling flow;
a judging subunit 242, configured to judge whether a test equipment state of the power battery laboratory is a fault reset state;
the control subunit 241 is further configured to control the power battery laboratory to resume the battery test mode when the test equipment state of the power battery laboratory is the fault reset state.
As an alternative embodiment, the control subunit 241 is specifically configured to, when the alarm level is one level, control the current of the battery simulator in the power battery laboratory to decrease to 0 according to a preset first rate, control the voltage of the battery simulator to decrease to 0 according to a preset second rate, and control the output power of the battery simulator to decrease to 0 according to a preset third rate; controlling a walk-in environment box in a power battery laboratory to recover the temperature in the walk-in environment box to be within a first preset temperature range according to a fourth speed; and controlling the cooling circulating water machine in the power battery laboratory to keep the original running state.
As an optional implementation manner, the control subunit 241 is specifically configured to, when the alarm level is two levels, send a first emergency stop instruction to the redundant voltage monitoring device, so that the redundant voltage monitoring device turns off the high-voltage relay according to the first emergency stop instruction; sending a second emergency stop instruction to a battery pack management system, controlling a battery simulator to disconnect an output relay, and controlling the output current and the output voltage of the battery simulator to be reduced to 0 at the same time; controlling a walk-in environment box in the power battery laboratory to recover the temperature in the walk-in environment box to a second preset temperature range according to a fifth speed; and controlling the cooling water circulator in the power battery laboratory to shut down.
As an optional implementation manner, the control subunit 241 is specifically configured to control the start of the emergency exhaust system in the power battery laboratory when the alarm level is three levels; sending a third emergency stop instruction to the redundant voltage monitoring device so that the redundant voltage monitoring device can disconnect the high-voltage relay according to the third emergency stop instruction; sending a fourth emergency stop instruction to a battery pack management system, controlling a battery simulator to disconnect an output relay, and controlling the output current and the output voltage of the battery simulator to be reduced to 0 at the same time; controlling a battery simulator and a walk-in type environment box in a power battery laboratory to shut down; opening the fire sprinkling system of the step-in type environment box to enable the fire sprinkling system to spray water for fire extinguishing; and controlling the cooling circulating water machine in the power battery laboratory to shut down.
In this embodiment, for the explanation of the power battery laboratory fault handling apparatus, reference may be made to the description in embodiment 1, and details are not repeated in this embodiment.
It can be seen that, implement the power battery laboratory fault handling device that this embodiment described, can the automatic monitoring trouble, carry out the hierarchical judgement of trouble automatically and carry out corresponding automatic processing, the security is high, and the fault handling effect is good, and then is favorable to ensureing power battery laboratory security.
The embodiment of the application provides an electronic device, which comprises a memory and a processor, wherein the memory is used for storing a computer program, and the processor runs the computer program to enable the electronic device to execute the power battery laboratory fault processing method in the embodiment 1 of the application.
The embodiment of the present application provides a computer-readable storage medium, which stores computer program instructions, and when the computer program instructions are read and executed by a processor, the computer program instructions execute the power battery laboratory fault processing method in embodiment 1 of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

Claims (10)

1. A power battery laboratory fault handling method is characterized by comprising the following steps:
receiving a fault alarm signal output by a power battery laboratory;
determining an alarm level of the fault alarm signal;
determining a fault processing flow according to the alarm grade;
and carrying out fault processing according to the fault processing flow.
2. The power cell laboratory fault handling method of claim 1, wherein said determining a fault handling procedure based on the alarm level comprises:
when the alarm level is first level, determining that the fault processing flow is first level fault processing flow;
when the alarm level is the second level, determining that the fault processing flow is the second level fault processing flow;
and when the alarm level is in a third level, determining that the fault processing flow is a third-level fault processing flow.
3. The power battery laboratory fault handling method according to claim 1, wherein the performing fault handling according to the fault handling process includes:
controlling the power battery laboratory to enter a fault processing mode according to the fault processing flow;
under the fault processing mode, controlling the power battery laboratory to pop up an alarm information dialog box and outputting acousto-optic alarm information;
controlling the power battery laboratory to execute fault processing operation according to the fault processing flow;
judging whether the test equipment state of the power battery laboratory is a fault reset state or not;
and if so, controlling the power battery laboratory to recover the battery test mode.
4. The power cell laboratory fault handling method according to claim 3, wherein the controlling the power cell laboratory to perform fault handling operations according to the fault handling process comprises:
when the alarm level is first-level, controlling the current of a battery simulator in the power battery laboratory to be reduced to 0 according to a preset first rate, controlling the voltage of the battery simulator to be reduced to 0 according to a preset second rate, and controlling the output power of the battery simulator to be reduced to 0 according to a preset third rate;
controlling a walk-in environment box in the power battery laboratory to recover the temperature in the walk-in environment box to be within a first preset temperature range according to a fourth speed;
and controlling the cooling circulating water machine in the power battery laboratory to keep the original running state.
5. The power cell laboratory fault handling method according to claim 3, wherein the controlling the power cell laboratory to perform fault handling operations according to the fault handling process comprises:
when the alarm level is two-level, sending a first emergency stop instruction to a redundant voltage monitoring device so that the redundant voltage monitoring device can disconnect a high-voltage relay according to the first emergency stop instruction;
sending a second emergency stop instruction to a battery pack management system, controlling the battery simulator to disconnect an output relay, and controlling the output current and the output voltage of the battery simulator to be reduced to 0 at the same time;
controlling a walk-in environment box in the power battery laboratory to recover the temperature in the walk-in environment box to a second preset temperature range according to a fifth rate;
and controlling the cooling circulating water machine in the power battery laboratory to shut down.
6. The power cell laboratory fault handling method according to claim 3, wherein the controlling the power cell laboratory to perform fault handling operations according to the fault handling process comprises:
when the alarm level is three, controlling an accident exhaust system in the power battery laboratory to start;
sending a third emergency stop instruction to a redundant voltage monitoring device so that the redundant voltage monitoring device can disconnect a high-voltage relay according to the third emergency stop instruction;
sending a fourth emergency stop instruction to a battery pack management system, controlling the battery simulator to disconnect an output relay, and controlling the output current and the output voltage of the battery simulator to be reduced to 0 at the same time;
controlling the battery simulator and a walk-in type environment box in the power battery laboratory to shut down;
opening a fire sprinkling system of the walk-in environment box to enable the fire sprinkling system to perform fire sprinkling and extinguishment;
and controlling the cooling circulating water machine in the power battery laboratory to shut down.
7. A power battery laboratory fault handling device, characterized in that, power battery laboratory fault handling device includes:
the receiving unit is used for receiving fault alarm signals output by a power battery laboratory;
a first determination unit for determining an alarm level of the malfunction alarm signal;
the second determining unit is used for determining a fault processing flow according to the alarm level;
and the fault processing unit is used for carrying out fault processing according to the fault processing flow.
8. The power battery laboratory fault handling device according to claim 7, wherein the second determining unit is specifically configured to determine that the fault handling process is a primary fault handling process when the alarm level is a primary level; when the alarm level is the second level, determining that the fault processing flow is the second level fault processing flow; and when the alarm level is in a third level, determining that the fault processing flow is a third-level fault processing flow.
9. An electronic device, comprising a memory for storing a computer program and a processor for executing the computer program to cause the electronic device to perform the power cell laboratory fault handling method of any one of claims 1 to 6.
10. A readable storage medium, wherein computer program instructions are stored in the readable storage medium, and when the computer program instructions are read and executed by a processor, the power cell laboratory fault handling method according to any one of claims 1 to 6 is performed.
CN202210705761.1A 2022-06-21 2022-06-21 Power battery laboratory fault processing method and device Pending CN115079651A (en)

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CN110174877A (en) * 2019-04-28 2019-08-27 武汉泰歌氢能汽车有限公司 A kind of fuel cell relates to the safety management system in hydrogen laboratory
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