Fault safety processing method and system of energy storage all-in-one machine and readable storage medium

Abstract

The invention discloses an energy storage all-in-one machine fault safety disposal method and system and a readable storage medium, and the method comprises the steps: carrying out the obstacle clearance disposal when the faults are recognized, the faults comprise a battery fault, an inverter fault and a communication fault, and carrying out the obstacle clearance operation based on a corresponding safety disposal mode; after the preset number of times of battery obstacle clearing operation is completed every time, rechecking operation is carried out on a preset battery management system; when the fault is not recognized, obstacle avoidance processing is carried out; the temperature difference between the battery temperature and the temperature in the liquid cooling pipeline is obtained, and obstacle avoidance operation is carried out based on the temperature difference and the battery temperature; environmental data including environmental temperature, environmental humidity and environmental dust are acquired, and obstacle avoidance operation is performed based on the environmental data. According to the invention, the fault can be identified and the obstacle can be removed, and the non-fault can also be identified and the obstacle can be avoided, so that the dual safety disposal guarantee of fault discovery and immediate solution and prevention is realized, the safety of the energy storage all-in-one machine is improved, and the fault rate is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of integrated energy storage machines, and more specifically, to a method, system and readable storage medium for safely handling failures of integrated energy storage machines. Background Art

[0002] An all-in-one energy storage machine (also called an integrated energy storage system or integrated energy storage device) typically integrates components such as batteries, inverters, battery management systems (BMS), and charge and discharge controllers into one unit to store and manage electrical energy.

[0003] At present, in practical applications, there are still challenges such as heat dissipation management, battery life, and intelligent management. Especially in high temperature or extreme climate environments, how to ensure the effectiveness of heat dissipation and avoid overheating of equipment, especially to achieve efficient heat dissipation in a compact space, is a difficulty in the design. Summary of the invention

[0004] The purpose of the present invention is to provide a method, system and readable storage medium for safely handling faults of an integrated energy storage device, which can identify existing faults and clear them, and can also identify unoccurred faults and avoid them, so as to achieve the dual safety handling guarantee of immediate resolution and prevention of faults, thereby improving the safety of the integrated energy storage device and reducing the failure rate.

[0005] A first aspect of the present invention provides a method for safely handling a failure of an integrated energy storage device, comprising the following steps: When a fault is identified, troubleshooting is performed, including: Existing faults include battery faults, inverter faults and communication faults, and clearance operations are performed based on the corresponding safety disposal methods; After completing the preset number of battery troubleshooting operations, re-check the preset battery management system; When the fault is not identified, obstacle avoidance measures are taken; Acquire a temperature difference between a battery temperature and a temperature in a liquid cooling pipe, and perform an obstacle avoidance operation based on the temperature difference and the battery temperature; Environmental data is acquired, wherein the environmental data includes environmental temperature, environmental humidity and environmental dust, and obstacle avoidance operations are performed based on the environmental data.

[0006] In this solution, the faults that have occurred include battery faults, inverter faults, and communication faults. Clearance operations are performed based on the corresponding safety disposal methods, including: The battery failure includes a battery overheat failure and a battery overcharge / discharge failure. When a battery overheat failure is identified, the power supply to the battery is disconnected, and a battery overheat alarm is output while the liquid cooling system is continuously controlled to cool the battery. When a battery overcharge / discharge failure is identified, the connection with the battery and the external power supply is disconnected, and the battery status is acquired in real time using the battery management system. The inverter fault includes identifying an inverter fault code, wherein when the inverter fault code is identified, disconnecting the power connection between the inverter and the battery and the load, and continuously controlling the liquid cooling system to liquid-cool the inverter while outputting an inverter fault alarm; The communication failure includes a communication interruption, wherein when the communication interruption is identified, the system log and the error report are checked to determine the cause of the interruption, and an alarm is issued based on the cause of the interruption.

[0007] In this solution, after completing a preset number of battery cleaning operations, the preset battery management system is re-inspected, specifically including: counting once after each battery cleaning operation, and when the count number reaches the preset number, responding to a preset trigger method, re-inspecting the battery management system, wherein the trigger method includes a timed and fixed-pattern trigger.

[0008] In this solution, the temperature difference between the battery temperature and the temperature in the liquid cooling pipe is obtained, and obstacle avoidance operation is performed based on the temperature difference and the battery temperature, specifically including: Acquiring the battery temperature and the temperature in the liquid cooling pipeline based on a sensor group, wherein the sensor group includes a patch temperature sensor disposed on the battery pack and a temperature sensor disposed in the liquid cooling pipeline; The temperature difference between the battery temperature and the temperature in the liquid cooling pipe is calculated, and the temperature range division result is combined with the battery temperature to avoid obstacles. The division result includes a first range, a second range and a third range, and each division result corresponds to a different temperature difference range, wherein, If the battery temperature is within a first range and the temperature difference is not within the first temperature difference range, adjusting the temperature of the coolant; If the battery temperature is within the second range and the temperature difference is not within the second temperature difference range, adjusting the flow rate of the coolant; If the battery temperature is within the third range and the temperature difference is not within the third temperature difference range, the temperature and flow rate of the coolant are adjusted.

[0009] In this solution, environmental data is obtained and obstacle avoidance operations are performed based on the ambient temperature, specifically including: Acquiring an ambient temperature based on an ambient temperature sensor disposed on the vehicle body; Preventive adjustment is performed on the coolant based on the ambient temperature in combination with the battery temperature to perform obstacle avoidance operations, wherein a calculated change rate of the ambient temperature and the battery temperature is calculated, and the coolant is adjusted based on the change rate in combination with preset liquid cooling adjustment parameters.

[0010] In this solution, obstacle avoidance operations are performed based on the ambient humidity and ambient dust, specifically including: Acquiring environmental humidity based on an environmental humidity sensor disposed on the vehicle body, and acquiring environmental dust based on a dust sensor; When the ambient humidity is greater than a preset humidity value and / or the ambient dust is greater than a preset dust value, the preset vents are closed and the coolant temperature and flow rate are adjusted at the same time.

[0011] A second aspect of the present invention further provides a system for handling a failure of an integrated energy storage device, comprising a memory and a processor, wherein the memory comprises a program for handling a failure of an integrated energy storage device, and when the program for handling a failure of an integrated energy storage device is executed by the processor, the following steps are implemented: When a fault is identified, troubleshooting is performed, including: Existing faults include battery faults, inverter faults and communication faults, and clearance operations are performed based on the corresponding safety disposal methods; After completing the preset number of battery troubleshooting operations, re-check the preset battery management system; When the fault is not identified, obstacle avoidance measures are taken; Acquire a temperature difference between a battery temperature and a temperature in a liquid cooling pipe, and perform an obstacle avoidance operation based on the temperature difference and the battery temperature; Environmental data is acquired, wherein the environmental data includes environmental temperature, environmental humidity and environmental dust, and obstacle avoidance operations are performed based on the environmental data.

[0012] In this solution, the faults that have occurred include battery faults, inverter faults, and communication faults. Clearance operations are performed based on the corresponding safety disposal methods, including: The battery failure includes a battery overheat failure and a battery overcharge / discharge failure. When a battery overheat failure is identified, the power supply to the battery is disconnected, and a battery overheat alarm is output while the liquid cooling system is continuously controlled to cool the battery. When a battery overcharge / discharge failure is identified, the connection with the battery and the external power supply is disconnected, and the battery status is acquired in real time using the battery management system. The inverter fault includes identifying an inverter fault code, wherein when the inverter fault code is identified, disconnecting the power connection between the inverter and the battery and the load, and continuously controlling the liquid cooling system to liquid-cool the inverter while outputting an inverter fault alarm; The communication failure includes a communication interruption, wherein when the communication interruption is identified, the system log and the error report are checked to determine the cause of the interruption, and an alarm is issued based on the cause of the interruption.

[0013] In this solution, after completing a preset number of battery cleaning operations, the preset battery management system is re-inspected, specifically including: counting once after each battery cleaning operation, and when the count number reaches the preset number, responding to a preset trigger method, re-inspecting the battery management system, wherein the trigger method includes a timed and fixed-pattern trigger.

[0014] In this solution, the temperature difference between the battery temperature and the temperature in the liquid cooling pipe is obtained, and obstacle avoidance operation is performed based on the temperature difference and the battery temperature, specifically including: Acquiring the battery temperature and the temperature in the liquid cooling pipeline based on a sensor group, wherein the sensor group includes a patch temperature sensor disposed on the battery pack and a temperature sensor disposed in the liquid cooling pipeline; The temperature difference between the battery temperature and the temperature in the liquid cooling pipe is calculated, and the temperature range division result is combined with the battery temperature to avoid obstacles. The division result includes a first range, a second range and a third range, and each division result corresponds to a different temperature difference range, wherein, If the battery temperature is within a first range and the temperature difference is not within the first temperature difference range, adjusting the temperature of the coolant; If the battery temperature is within the second range and the temperature difference is not within the second temperature difference range, adjusting the flow rate of the coolant; If the battery temperature is within the third range and the temperature difference is not within the third temperature difference range, the temperature and flow rate of the coolant are adjusted.

[0015] In this solution, environmental data is obtained and obstacle avoidance operations are performed based on the ambient temperature, specifically including: Acquiring an ambient temperature based on an ambient temperature sensor disposed on the vehicle body; Preventive adjustment is performed on the coolant based on the ambient temperature in combination with the battery temperature to perform obstacle avoidance operations, wherein a calculated change rate of the ambient temperature and the battery temperature is calculated, and the coolant is adjusted based on the change rate in combination with preset liquid cooling adjustment parameters.

[0016] In this solution, obstacle avoidance operations are performed based on the ambient humidity and ambient dust, specifically including: Acquiring environmental humidity based on an environmental humidity sensor disposed on the vehicle body, and acquiring environmental dust based on a dust sensor; When the ambient humidity is greater than a preset humidity value and / or the ambient dust is greater than a preset dust value, the preset vents are closed and the coolant temperature and flow rate are adjusted at the same time.

[0017] A third aspect of the present invention provides a computer-readable storage medium, which includes a program of a method for safely handling the failure of an integrated energy storage machine. When the program of the method for safely handling the failure of an integrated energy storage machine is executed by a processor, the steps of a method for safely handling the failure of an integrated energy storage machine as described in any one of the above items are implemented.

[0018] The present invention discloses a method, system and readable storage medium for safely handling faults of an integrated energy storage device, which can identify existing faults and clear them, and can also identify unoccurred faults and avoid them, thereby achieving dual safety handling guarantees of immediate resolution and prevention of faults, thereby improving the safety of the integrated energy storage device and reducing the failure rate. In particular, the temperature can be controlled, and the problem of effective heat dissipation is solved through multiple means such as multi-stage liquid cooling control and advance liquid cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A flow chart of a method for safely handling a failure of an integrated energy storage device according to the present invention is shown; Figure 2 A block diagram of a safety handling system for energy storage integrated machine failures of the present invention is shown. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0022] Figure 1 A flow chart of a method for safely handling a failure of an integrated energy storage device of the present application is shown.

[0023] like Figure 1 As shown, the present application discloses a method for safely handling a failure of an integrated energy storage device, comprising the following steps: When a fault is identified, troubleshooting is performed, including: Existing faults include battery faults, inverter faults and communication faults, and clearance operations are performed based on the corresponding safety disposal methods; After completing the preset number of battery troubleshooting operations, re-check the preset battery management system; When the fault is not identified, obstacle avoidance measures are taken; Acquire a temperature difference between a battery temperature and a temperature in a liquid cooling pipe, and perform an obstacle avoidance operation based on the temperature difference and the battery temperature; Environmental data is acquired, wherein the environmental data includes environmental temperature, environmental humidity and environmental dust, and obstacle avoidance operations are performed based on the environmental data.

[0024] It should be noted that, in this embodiment, when performing safety fault management on the energy storage integrated machine, it is not only to clear the faults that have occurred, but more importantly, to avoid obstacles for faults that have not occurred. Specifically, when an occurred fault is identified, clearance is performed, wherein the occurred faults include battery faults, inverter faults and communication faults, and clearance operations are performed based on the corresponding safety handling methods. Due to the continuous innovation and improvement of technology, the processing of occurred faults is now similar. On this basis, this embodiment also proposes to re-inspect the preset battery management system after completing a preset number of battery clearance operations, so as to re-verify the battery management system and avoid misjudgment due to the battery management system itself.

[0025] Furthermore, when a fault is not identified, obstacle avoidance is performed, that is, obstacle avoidance management is performed for a fault that has not occurred, including obtaining the temperature difference between the battery temperature and the temperature in the liquid cooling pipeline, and performing obstacle avoidance operations based on the temperature difference combined with the battery temperature. How to manage the temperature inside the battery is the key point, which will be explained in detail in the subsequent instructions; and obtaining environmental data, the environmental data including ambient temperature, ambient humidity and ambient dust, and performing obstacle avoidance operations based on the environmental data. Environmental data is obtained through the environment in which the vehicle is located, so as to avoid possible bad effects on the vehicle based on the environmental data, such as degradation of the performance of the energy storage device due to abnormal temperature, or electrical short circuit caused by abnormal humidity, and dust affecting the normal operation of electronic components.

[0026] According to an embodiment of the present invention, the faults that have occurred include battery faults, inverter faults, and communication faults, and the clearance operation is performed based on the corresponding safety handling methods, specifically including: The battery failure includes a battery overheat failure and a battery overcharge / discharge failure. When a battery overheat failure is identified, the power supply to the battery is disconnected, and a battery overheat alarm is output while the liquid cooling system is continuously controlled to cool the battery. When a battery overcharge / discharge failure is identified, the connection with the battery and the external power supply is disconnected, and the battery status is acquired in real time using the battery management system. The inverter fault includes identifying an inverter fault code, wherein when the inverter fault code is identified, disconnecting the power connection between the inverter and the battery and the load, and continuously controlling the liquid cooling system to liquid-cool the inverter while outputting an inverter fault alarm; The communication failure includes a communication interruption, wherein when the communication interruption is identified, the system log and the error report are checked to determine the cause of the interruption, and an alarm is issued based on the cause of the interruption.

[0027] It should be noted that, in the present embodiment, over-discharging of the battery causes the battery voltage to drop too low, which may cause battery damage or shorten the life of the battery; while overcharging of the battery causes the battery voltage to be too high, which may cause problems such as battery overheating, expansion or explosion. Therefore, when a battery overcharge / discharge fault is identified, the connection with the battery and the external power supply is disconnected, and the battery status is obtained in real time using the battery management system to grasp the health of the battery in real time. Battery overheating may cause battery performance degradation or even cause a fire. Overheating is usually caused by the battery being in a high-load working state for a long time or an internal fault in the battery. When a battery overheating fault is identified, the power supply to the battery is disconnected, and the liquid cooling system is continuously controlled to cool the battery while outputting a battery overheating alarm.

[0028] Furthermore, the inverter is one of the core components of the energy storage machine, which is used to convert the direct current stored in the battery into alternating current. If the inverter fails, it may cause the equipment to malfunction or even cause a fire. Since a fault code will be displayed when the inverter fails, when the inverter fault code is identified, the power connection between the inverter and the battery and the load is disconnected, and the liquid cooling system is continuously controlled to cool the inverter while outputting the inverter fault alarm.

[0029] Furthermore, the communication failure includes communication interruption, which results in failure to work normally. Therefore, when the communication interruption is identified, the system log and error report are checked to determine the cause of the interruption, and an alarm is issued based on the cause of the interruption so that maintenance personnel can complete the detection as soon as possible.

[0030] According to an embodiment of the present invention, after completing a preset number of battery cleaning operations, a preset battery management system is re-inspected, specifically including: counting once after each battery cleaning operation is performed, and when the count number reaches a preset number, responding to a preset trigger method, re-inspecting the battery management system, wherein the trigger method includes a timed and fixed-pattern trigger.

[0031] It should be noted that, in this embodiment, the BMS self-test is a self-diagnostic process for ensuring the health and safety of the battery in the energy storage system. The BMS self-test can detect the battery voltage, temperature, charge and discharge status and other important parameters to ensure that the battery's operating status is within a safe range. Traditional self-tests include battery pack status checks, charge and discharge circuit tests and current sensor tests. Traditional triggering methods include power-on self-tests and periodic self-tests. Since no other triggering methods are set, it is easy to cause errors during abnormal detection or errors during normal detection. Therefore, in this embodiment, the battery troubleshooting operation is counted, so that when the count number reaches the preset number, the battery management system is triggered to re-check through a timing and pattern, where the timing is 5 minutes after the technical number reaches the preset number, and the pattern is a hardware self-test.

[0032] According to an embodiment of the present invention, obtaining a temperature difference between a battery temperature and a temperature in a liquid cooling pipe, and performing an obstacle avoidance operation based on the temperature difference and the battery temperature specifically includes: Acquiring the battery temperature and the temperature in the liquid cooling pipeline based on a sensor group, wherein the sensor group includes a patch temperature sensor disposed on the battery pack and a temperature sensor disposed in the liquid cooling pipeline; The temperature difference between the battery temperature and the temperature in the liquid cooling pipe is calculated, and the temperature range division result is combined with the battery temperature to avoid obstacles. The division result includes a first range, a second range and a third range, and each division result corresponds to a different temperature difference range, wherein, If the battery temperature is within a first range and the temperature difference is not within the first temperature difference range, adjusting the temperature of the coolant; If the battery temperature is within the second range and the temperature difference is not within the second temperature difference range, adjusting the flow rate of the coolant; If the battery temperature is within the third range and the temperature difference is not within the third temperature difference range, the temperature and flow rate of the coolant are adjusted.

[0033] It should be noted that in this embodiment, the battery temperature will fluctuate when the vehicle is working. In order to ensure that the battery operates within a controllable range, a liquid cooling system is indispensable. Therefore, obstacle avoidance can be performed by calculating the temperature difference between the battery temperature and the temperature in the liquid cooling circuit. The temperature in the liquid cooling circuit differs greatly from the temperature at the coolant inlet. The actual temperature of the coolant in the liquid cooling circuit can be checked by setting a temperature sensor in the liquid cooling circuit to further judge the liquid cooling effect.

[0034] Specifically, the temperature difference between the battery temperature and the temperature in the liquid cooling pipeline is calculated, and the battery temperature is combined with the temperature range division result to avoid obstacles. The division result includes a first range, a second range and a third range, and each division result corresponds to a different temperature difference range. If the battery temperature is in the first range and the temperature difference is not within the first temperature difference range, the temperature of the coolant is adjusted; if the battery temperature is in the second range and the temperature difference is not within the second temperature difference range, the flow rate of the coolant is adjusted; if the battery temperature is in the third range and the temperature difference is not within the third temperature difference range, the temperature and flow rate of the coolant are adjusted.

[0035] It is worth mentioning that, as shown in Table 1, the division results of the battery temperature and the corresponding temperature difference range are displayed, wherein, if the battery temperature after the division result is within the first division range, and the temperature difference is not within the first temperature difference range, the temperature of the coolant is adjusted, wherein 23°C is used as the standard coolant temperature, the temperature is adjusted, and the flow rate is not adjusted; if the battery temperature is within the second range, and the temperature difference is not within the second temperature difference range, the flow rate of the coolant is adjusted, wherein the flow rate is adjusted based on a flow rate of 3m / s, and the temperature is not adjusted; if the battery temperature is within the third range, and the temperature difference is not within the third temperature difference range, the temperature and flow rate of the coolant are adjusted, wherein 23°C is used as the standard coolant temperature for temperature adjustment, and the flow rate is adjusted based on a flow rate of 3m / s.

[0036] Table 1. Division results and temperature range Partition result (temperature) Temperature range First range (15℃-20℃) The first temperature difference range (+3℃, +8℃) Second range [20℃-25℃] The second temperature difference range [-2℃, +3℃] The third range (25℃-30℃) The third temperature difference range is -7℃, -2℃) According to an embodiment of the present invention, obtaining environmental data and performing obstacle avoidance operations based on the environmental temperature specifically includes: Acquiring an ambient temperature based on an ambient temperature sensor disposed on the vehicle body; Preventive adjustment is performed on the coolant based on the ambient temperature in combination with the battery temperature to perform obstacle avoidance operations, wherein a calculated change rate of the ambient temperature and the battery temperature is calculated, and the coolant is adjusted based on the change rate in combination with preset liquid cooling adjustment parameters.

[0037] It should be noted that, in this embodiment, the influence of ambient temperature on battery temperature is very important, especially in energy storage devices and electric vehicle applications, the performance, efficiency and life of the battery are directly affected by the ambient temperature. Therefore, in order to prevent obstacles, it is necessary to obtain the ambient temperature based on the ambient temperature sensor provided on the vehicle body, and then preventively adjust the coolant based on the ambient temperature combined with the battery temperature to perform obstacle avoidance operations, wherein the calculated change rate of the ambient temperature and the battery temperature is calculated, and the coolant is adjusted based on the change rate combined with the preset liquid cooling adjustment parameters.

[0038] Specifically, in order to prevent the impact of extremely low temperature or extremely high temperature on the battery, it is necessary to first calculate the rate of change of the ambient temperature and the battery temperature, so as to adjust the coolant based on the rate of change combined with the liquid cooling parameters to manage the battery in advance. For example, the current battery temperature is 20°C, the coolant temperature is 18°C, and the flow rate is 3m / s. Since the ambient temperature where the vehicle is driving has dropped to minus 2°C, in order to prevent it in advance, it is necessary to calculate the rate of change in advance to be 0.8. Therefore, since the ambient temperature is much lower than the battery temperature, the coolant temperature needs to be raised to 23°C and the flow rate needs to be adjusted. To adjust to 3.75m / s, the calculation formula is "battery temperature / absolute difference between turn-on temperature and ambient temperature", where the trigger method is that the difference between the ambient temperature and the battery temperature is greater than 23°C to start preventive adjustment to avoid obstacles, otherwise it will not be turned on; further, for example, the current battery temperature is 20°C, the coolant temperature is 18°C, and the flow rate is 3m / s, but because the ambient temperature where the vehicle is driving is 48°C, in order to take precautions in advance, it is necessary to calculate the change rate in advance as 0.8, but because the ambient temperature is much higher than the battery temperature, the coolant temperature needs to be cooled down and adjusted to 15°C, and the flow rate is 2m / s.

[0039] According to an embodiment of the present invention, performing obstacle avoidance operations based on the ambient humidity and ambient dust specifically includes: Acquiring environmental humidity based on an environmental humidity sensor disposed on the vehicle body, and acquiring environmental dust based on a dust sensor; When the ambient humidity is greater than a preset humidity value and / or the ambient dust is greater than a preset dust value, the preset vents are closed and the coolant temperature and flow rate are adjusted at the same time.

[0040] It should be noted that, in this embodiment, the ambient humidity is first obtained based on the ambient humidity sensor set on the vehicle body, and the ambient dust is obtained by the dust sensor. Since excessive ambient humidity or excessive ambient dust will affect the safe operation of the energy storage device, when the ambient humidity is greater than the preset humidity value and / or the ambient dust is greater than the preset dust value, it is necessary to close the preset vents and adjust the coolant temperature and flow rate to further ensure the stability of the battery. The parameters actually adjusted are generally to lower the coolant temperature and the flow rate.

[0041] Figure 2 A block diagram of a safety handling system for energy storage integrated machine failures of the present invention is shown.

[0042] like Figure 2 As shown, the present invention discloses a system for handling failure of an integrated energy storage device safely, including a memory and a processor, wherein the memory includes a program for handling failure of an integrated energy storage device safely, and when the program for handling failure of an integrated energy storage device safely is executed by the processor, the following steps are implemented: When a fault is identified, troubleshooting is performed, including: Existing faults include battery faults, inverter faults and communication faults, and clearance operations are performed based on the corresponding safety disposal methods; After completing the preset number of battery troubleshooting operations, re-check the preset battery management system; When the fault is not identified, obstacle avoidance measures are taken; Acquire a temperature difference between a battery temperature and a temperature in a liquid cooling pipe, and perform an obstacle avoidance operation based on the temperature difference and the battery temperature; Environmental data is acquired, wherein the environmental data includes environmental temperature, environmental humidity and environmental dust, and obstacle avoidance operations are performed based on the environmental data.

[0043] It should be noted that, in this embodiment, when performing safety fault management on the energy storage integrated machine, it is not only to clear the faults that have occurred, but more importantly, to avoid obstacles for faults that have not occurred. Specifically, when an occurred fault is identified, clearance is performed, wherein the occurred faults include battery faults, inverter faults and communication faults, and clearance operations are performed based on the corresponding safety handling methods. Due to the continuous innovation and improvement of technology, the processing of occurred faults is now similar. On this basis, this embodiment also proposes to re-inspect the preset battery management system after completing a preset number of battery clearance operations, so as to re-verify the battery management system and avoid misjudgment due to the battery management system itself.

[0044] Furthermore, when a fault is not identified, obstacle avoidance is performed, that is, obstacle avoidance management is performed for a fault that has not occurred, including obtaining the temperature difference between the battery temperature and the temperature in the liquid cooling pipeline, and performing obstacle avoidance operations based on the temperature difference combined with the battery temperature. How to manage the temperature inside the battery is the key point, which will be explained in detail in the subsequent instructions; and obtaining environmental data, the environmental data including ambient temperature, ambient humidity and ambient dust, and performing obstacle avoidance operations based on the environmental data. Environmental data is obtained through the environment in which the vehicle is located, so as to avoid possible bad effects on the vehicle based on the environmental data, such as degradation of the performance of the energy storage device due to abnormal temperature, or electrical short circuit caused by abnormal humidity, and dust affecting the normal operation of electronic components.

[0045] According to an embodiment of the present invention, the faults that have occurred include battery faults, inverter faults, and communication faults, and the clearance operation is performed based on the corresponding safety handling methods, specifically including: The battery failure includes a battery overheat failure and a battery overcharge / discharge failure. When a battery overheat failure is identified, the power supply to the battery is disconnected, and a battery overheat alarm is output while the liquid cooling system is continuously controlled to cool the battery. When a battery overcharge / discharge failure is identified, the connection with the battery and the external power supply is disconnected, and the battery status is acquired in real time using the battery management system. The inverter fault includes identifying an inverter fault code, wherein when the inverter fault code is identified, disconnecting the power connection between the inverter and the battery and the load, and continuously controlling the liquid cooling system to liquid-cool the inverter while outputting an inverter fault alarm; The communication failure includes a communication interruption, wherein when the communication interruption is identified, the system log and the error report are checked to determine the cause of the interruption, and an alarm is issued based on the cause of the interruption.

[0046] It should be noted that, in the present embodiment, over-discharging of the battery causes the battery voltage to drop too low, which may cause battery damage or shorten the life of the battery; while overcharging of the battery causes the battery voltage to be too high, which may cause problems such as battery overheating, expansion or explosion. Therefore, when a battery overcharge / discharge fault is identified, the connection with the battery and the external power supply is disconnected, and the battery status is obtained in real time using the battery management system to grasp the health of the battery in real time. Battery overheating may cause battery performance degradation or even cause a fire. Overheating is usually caused by the battery being in a high-load working state for a long time or an internal fault in the battery. When a battery overheating fault is identified, the power supply to the battery is disconnected, and the liquid cooling system is continuously controlled to cool the battery while outputting a battery overheating alarm.

[0047] Furthermore, the inverter is one of the core components of the energy storage machine, which is used to convert the direct current stored in the battery into alternating current. If the inverter fails, it may cause the equipment to malfunction or even cause a fire. Since a fault code will be displayed when the inverter fails, when the inverter fault code is identified, the power connection between the inverter and the battery and the load is disconnected, and the liquid cooling system is continuously controlled to cool the inverter while outputting the inverter fault alarm.

[0048] Furthermore, the communication failure includes communication interruption, which results in failure to work normally. Therefore, when the communication interruption is identified, the system log and error report are checked to determine the cause of the interruption, and an alarm is issued based on the cause of the interruption so that maintenance personnel can complete the detection as soon as possible.

[0049] According to an embodiment of the present invention, after completing a preset number of battery cleaning operations, a preset battery management system is re-inspected, specifically including: counting once after each battery cleaning operation is performed, and when the count number reaches a preset number, responding to a preset trigger method, re-inspecting the battery management system, wherein the trigger method includes a timed and fixed-pattern trigger.

[0050] It should be noted that, in this embodiment, the BMS self-test is a self-diagnostic process for ensuring the health and safety of the battery in the energy storage system. The BMS self-test can detect the battery voltage, temperature, charge and discharge status and other important parameters to ensure that the battery's operating status is within a safe range. Traditional self-tests include battery pack status checks, charge and discharge circuit tests and current sensor tests. Traditional triggering methods include power-on self-tests and periodic self-tests. Since no other triggering methods are set, it is easy to cause errors during abnormal detection or errors during normal detection. Therefore, in this embodiment, the battery troubleshooting operation is counted, so that when the count number reaches the preset number, the battery management system is triggered to re-check through a timing and pattern, where the timing is 5 minutes after the technical number reaches the preset number, and the pattern is a hardware self-test.

[0051] According to an embodiment of the present invention, obtaining a temperature difference between a battery temperature and a temperature in a liquid cooling pipe, and performing an obstacle avoidance operation based on the temperature difference and the battery temperature specifically includes: Acquiring the battery temperature and the temperature in the liquid cooling pipeline based on a sensor group, wherein the sensor group includes a patch temperature sensor disposed on the battery pack and a temperature sensor disposed in the liquid cooling pipeline; The temperature difference between the battery temperature and the temperature in the liquid cooling pipe is calculated, and the temperature range division result is combined with the battery temperature to avoid obstacles. The division result includes a first range, a second range and a third range, and each division result corresponds to a different temperature difference range, wherein, If the battery temperature is within a first range and the temperature difference is not within the first temperature difference range, adjusting the temperature of the coolant; If the battery temperature is within the second range and the temperature difference is not within the second temperature difference range, adjusting the flow rate of the coolant; If the battery temperature is within the third range and the temperature difference is not within the third temperature difference range, the temperature and flow rate of the coolant are adjusted.

[0052] It should be noted that in this embodiment, the battery temperature will fluctuate when the vehicle is working. In order to ensure that the battery operates within a controllable range, a liquid cooling system is indispensable. Therefore, obstacle avoidance can be performed by calculating the temperature difference between the battery temperature and the temperature in the liquid cooling circuit. The temperature in the liquid cooling circuit differs greatly from the temperature at the coolant inlet. The actual temperature of the coolant in the liquid cooling circuit can be checked by setting a temperature sensor in the liquid cooling circuit to further judge the liquid cooling effect.

[0053] Specifically, the temperature difference between the battery temperature and the temperature in the liquid cooling pipeline is calculated, and the battery temperature is combined with the temperature range division result to avoid obstacles. The division result includes a first range, a second range and a third range, and each division result corresponds to a different temperature difference range. If the battery temperature is in the first range and the temperature difference is not within the first temperature difference range, the temperature of the coolant is adjusted; if the battery temperature is in the second range and the temperature difference is not within the second temperature difference range, the flow rate of the coolant is adjusted; if the battery temperature is in the third range and the temperature difference is not within the third temperature difference range, the temperature and flow rate of the coolant are adjusted.

[0054] It is worth mentioning that, as shown in Table 1, the division results of the battery temperature and the corresponding temperature difference range are displayed, wherein, if the battery temperature after the division result is within the first division range, and the temperature difference is not within the first temperature difference range, the temperature of the coolant is adjusted, wherein 23°C is used as the standard coolant temperature, the temperature is adjusted, and the flow rate is not adjusted; if the battery temperature is within the second range, and the temperature difference is not within the second temperature difference range, the flow rate of the coolant is adjusted, wherein the flow rate is adjusted based on a flow rate of 3m / s, and the temperature is not adjusted; if the battery temperature is within the third range, and the temperature difference is not within the third temperature difference range, the temperature and flow rate of the coolant are adjusted, wherein 23°C is used as the standard coolant temperature for temperature adjustment, and the flow rate is adjusted based on a flow rate of 3m / s.

[0055] According to an embodiment of the present invention, obtaining environmental data and performing obstacle avoidance operations based on the environmental temperature specifically includes: Acquiring an ambient temperature based on an ambient temperature sensor disposed on the vehicle body; Preventive adjustment is performed on the coolant based on the ambient temperature in combination with the battery temperature to perform obstacle avoidance operations, wherein a calculated change rate of the ambient temperature and the battery temperature is calculated, and the coolant is adjusted based on the change rate in combination with preset liquid cooling adjustment parameters.

[0056] It should be noted that, in this embodiment, the influence of ambient temperature on battery temperature is very important, especially in energy storage devices and electric vehicle applications, the performance, efficiency and life of the battery are directly affected by the ambient temperature. Therefore, in order to prevent obstacles, it is necessary to obtain the ambient temperature based on the ambient temperature sensor provided on the vehicle body, and then preventively adjust the coolant based on the ambient temperature combined with the battery temperature to perform obstacle avoidance operations, wherein the calculated change rate of the ambient temperature and the battery temperature is calculated, and the coolant is adjusted based on the change rate combined with the preset liquid cooling adjustment parameters.

[0057] Specifically, in order to prevent the impact of extremely low temperature or extremely high temperature on the battery, it is necessary to first calculate the rate of change of the ambient temperature and the battery temperature, so as to adjust the coolant based on the rate of change combined with the liquid cooling parameters to manage the battery in advance. For example, the current battery temperature is 20°C, the coolant temperature is 18°C, and the flow rate is 3m / s. Since the ambient temperature where the vehicle is driving has dropped to minus 2°C, in order to prevent it in advance, it is necessary to calculate the rate of change in advance to be 0.8. Therefore, since the ambient temperature is much lower than the battery temperature, the coolant temperature needs to be raised to 23°C and the flow rate needs to be adjusted. To adjust to 3.75m / s, the calculation formula is "battery temperature / absolute difference between turn-on temperature and ambient temperature", where the trigger method is that the difference between the ambient temperature and the battery temperature is greater than 23°C to start preventive adjustment to avoid obstacles, otherwise it will not be turned on; further, for example, the current battery temperature is 20°C, the coolant temperature is 18°C, and the flow rate is 3m / s, but because the ambient temperature where the vehicle is driving is 48°C, in order to take precautions in advance, it is necessary to calculate the change rate in advance as 0.8, but because the ambient temperature is much higher than the battery temperature, the coolant temperature needs to be cooled down and adjusted to 15°C, and the flow rate is 2m / s.

[0058] According to an embodiment of the present invention, performing obstacle avoidance operations based on the ambient humidity and ambient dust specifically includes: Acquiring environmental humidity based on an environmental humidity sensor disposed on the vehicle body, and acquiring environmental dust based on a dust sensor; When the ambient humidity is greater than a preset humidity value and / or the ambient dust is greater than a preset dust value, the preset vents are closed and the coolant temperature and flow rate are adjusted at the same time.

[0059] It should be noted that, in this embodiment, the ambient humidity is first obtained based on the ambient humidity sensor set on the vehicle body, and the ambient dust is obtained by the dust sensor. Since excessive ambient humidity or excessive ambient dust will affect the safe operation of the energy storage device, when the ambient humidity is greater than the preset humidity value and / or the ambient dust is greater than the preset dust value, it is necessary to close the preset vents and adjust the coolant temperature and flow rate to further ensure the stability of the battery. The parameters actually adjusted are generally to lower the coolant temperature and the flow rate.

[0060] A third aspect of the present invention provides a computer-readable storage medium, which includes a program for a method for safely handling failures of an integrated energy storage device. When the program for safely handling failures of an integrated energy storage device is executed by a processor, the steps of a method for safely handling failures of an integrated energy storage device as described in any one of the above items are implemented.

[0061] The present invention discloses a method, system and readable storage medium for safely handling faults of an integrated energy storage device, which can identify existing faults and clear them, and can also identify unoccurred faults and avoid them, thereby achieving dual safety handling guarantees of immediate resolution and prevention of faults, thereby improving the safety of the integrated energy storage device and reducing the failure rate.

[0062] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0063] The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units; they may be located in one place or distributed on multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0064] In addition, all functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately used as a unit, or two or more units may be integrated into one unit; the above-mentioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0065] A person of ordinary skill in the art can understand that: all or part of the steps of implementing the above method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above method embodiment; and the aforementioned storage medium includes: a mobile storage device, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.

[0066] Alternatively, if the above-mentioned integrated unit of the present invention is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present invention can be essentially or partly reflected in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as mobile storage devices, ROM, RAM, magnetic disks or optical disks.

Claims

1. A method for safely handling failures of an integrated energy storage device, characterized in that: The following steps are involved: When a fault is identified, troubleshooting is performed, including: Existing faults include battery faults, inverter faults and communication faults, and clearance operations are performed based on the corresponding safety disposal methods; After completing the preset number of battery troubleshooting operations, re-check the preset battery management system; When the fault is not identified, obstacle avoidance measures are taken; Acquire a temperature difference between a battery temperature and a temperature in a liquid cooling pipe, and perform an obstacle avoidance operation based on the temperature difference and the battery temperature; Environmental data is acquired, wherein the environmental data includes environmental temperature, environmental humidity and environmental dust, and obstacle avoidance operations are performed based on the environmental data.

2. A method for safely handling failure of an integrated energy storage device according to claim 1, characterized in that: The faults that have occurred include battery faults, inverter faults and communication faults. The clearance operations are carried out based on the corresponding safety disposal methods, including: The battery failure includes a battery overheat failure and a battery overcharge / discharge failure. When a battery overheat failure is identified, the power supply to the battery is disconnected, and a battery overheat alarm is output while the liquid cooling system is continuously controlled to cool the battery. When a battery overcharge / discharge failure is identified, the connection with the battery and the external power supply is disconnected, and the battery status is acquired in real time using the battery management system. The inverter fault includes identifying an inverter fault code, wherein when the inverter fault code is identified, disconnecting the power connection between the inverter and the battery and the load, and continuously controlling the liquid cooling system to liquid-cool the inverter while outputting an inverter fault alarm; The communication failure includes a communication interruption, wherein when the communication interruption is identified, the system log and the error report are checked to determine the cause of the interruption, and an alarm is issued based on the cause of the interruption.

3. A method for safely handling failure of an integrated energy storage device according to claim 2, characterized in that: After completing a preset number of battery troubleshooting operations, a preset battery management system is rechecked, specifically including: counting once after each battery troubleshooting operation is performed, and when the count number reaches a preset number, responding to a preset trigger method, rechecking the battery management system, wherein the trigger method includes a timed and fixed-pattern trigger.

4. A method for safely handling failure of an integrated energy storage device according to claim 3, characterized in that: Obtaining a temperature difference between a battery temperature and a temperature in a liquid cooling pipe, and performing an obstacle avoidance operation based on the temperature difference and the battery temperature, specifically including: Acquiring the battery temperature and the temperature in the liquid cooling pipeline based on a sensor group, wherein the sensor group includes a patch temperature sensor disposed on the battery pack and a temperature sensor disposed in the liquid cooling pipeline; The temperature difference between the battery temperature and the temperature in the liquid cooling pipe is calculated, and the temperature range division result is combined with the battery temperature to avoid obstacles. The division result includes a first range, a second range and a third range, and each division result corresponds to a different temperature difference range, wherein, If the battery temperature is within a first range and the temperature difference is not within the first temperature difference range, adjusting the temperature of the coolant; If the battery temperature is within the second range and the temperature difference is not within the second temperature difference range, adjusting the flow rate of the coolant; If the battery temperature is within the third range and the temperature difference is not within the third temperature difference range, the temperature and flow rate of the coolant are adjusted.

5. A method for safely handling failure of an integrated energy storage device according to claim 4, characterized in that: Acquiring environmental data and performing obstacle avoidance operations based on the ambient temperature, specifically including: Acquiring an ambient temperature based on an ambient temperature sensor disposed on the vehicle body; Preventive adjustment is performed on the coolant based on the ambient temperature in combination with the battery temperature to perform obstacle avoidance operations, wherein a calculated change rate of the ambient temperature and the battery temperature is calculated, and the coolant is adjusted based on the change rate in combination with preset liquid cooling adjustment parameters.

6. A method for safely handling failure of an integrated energy storage device according to claim 5, characterized in that: The obstacle avoidance operation is performed based on the ambient humidity and ambient dust, specifically including: Acquiring environmental humidity based on an environmental humidity sensor disposed on the vehicle body, and acquiring environmental dust based on a dust sensor; When the ambient humidity is greater than a preset humidity value and / or the ambient dust is greater than a preset dust value, the preset vents are closed and the coolant temperature and flow rate are adjusted at the same time.

7. A safety handling system for energy storage integrated machine failure, characterized in that: The method comprises a memory and a processor, wherein the memory comprises a program for a method for handling a failure of an integrated energy storage device in a safe manner, and when the program for handling a failure of an integrated energy storage device in a safe manner is executed by the processor, the following steps are implemented: When a fault is identified, troubleshooting is performed, including: Existing faults include battery faults, inverter faults and communication faults, and clearance operations are performed based on the corresponding safety disposal methods; After completing the preset number of battery troubleshooting operations, re-check the preset battery management system; When the fault is not identified, obstacle avoidance measures are taken; Acquire a temperature difference between a battery temperature and a temperature in a liquid cooling pipe, and perform an obstacle avoidance operation based on the temperature difference and the battery temperature; Environmental data is acquired, wherein the environmental data includes environmental temperature, environmental humidity and environmental dust, and obstacle avoidance operations are performed based on the environmental data.

8. The energy storage integrated machine fault safety handling system according to claim 7, characterized in that: The faults that have occurred include battery faults, inverter faults and communication faults. The clearance operations are carried out based on the corresponding safety disposal methods, including: The battery failure includes a battery overheat failure and a battery overcharge / discharge failure. When a battery overheat failure is identified, the power supply to the battery is disconnected, and a battery overheat alarm is output while the liquid cooling system is continuously controlled to cool the battery. When a battery overcharge / discharge failure is identified, the connection with the battery and the external power supply is disconnected, and the battery status is acquired in real time using the battery management system. The inverter fault includes identifying an inverter fault code, wherein when the inverter fault code is identified, disconnecting the power connection between the inverter and the battery and the load, and continuously controlling the liquid cooling system to liquid-cool the inverter while outputting an inverter fault alarm; The communication failure includes a communication interruption, wherein when the communication interruption is identified, the system log and the error report are checked to determine the cause of the interruption, and an alarm is issued based on the cause of the interruption.

9. The energy storage integrated machine fault safety handling system according to claim 8, characterized in that: After completing a preset number of battery troubleshooting operations, a preset battery management system is rechecked, specifically including: counting once after each battery troubleshooting operation is performed, and when the count number reaches a preset number, responding to a preset trigger method, rechecking the battery management system, wherein the trigger method includes a timed and fixed-pattern trigger.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a program for a method for safely handling a failure of an integrated energy storage device. When the program for safely handling a failure of an integrated energy storage device is executed by a processor, the steps of a method for safely handling a failure of an integrated energy storage device according to any one of claims 1 to 6 are implemented.

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