Energy storage device fault safety handling method, system and readable storage medium

Abstract

The present invention discloses a method, system, and readable storage medium for safely handling faults in an integrated energy storage device. The method includes: when an existing fault is identified, performing obstacle clearance, including battery faults, inverter faults, and communication faults, and performing obstacle clearance operations based on corresponding safety handling methods; after completing a preset number of battery obstacle clearance operations, rechecking the preset battery management system; when an existing fault is not identified, performing obstacle avoidance operations; 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 and the battery temperature; obtaining environmental data, including ambient temperature, ambient humidity, and ambient dust, and performing obstacle avoidance operations based on the environmental data. The present invention can identify existing faults and clear them, and can also identify unoccurred faults and avoid them, achieving dual safety handling guarantees of immediate resolution and prevention of faults upon discovery, thereby improving the safety of the integrated energy storage device and reducing the failure rate.

Description

Technical Field

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

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

[0003] Currently, in practical applications, challenges such as heat dissipation management, battery life, and intelligent management are still faced. 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 difficult point 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, as well as identify unoccurred faults and avoid them, thereby achieving the dual safety handling guarantees of immediate resolution and prevention of faults upon discovery, 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 fault of an integrated energy storage device, comprising the following steps:

[0006] When a fault is identified, troubleshooting is performed, including:

[0007] Existing faults include battery failure, inverter failure, and communication failure, and clearance operations are carried out based on the corresponding safety handling methods;

[0008] After completing the preset number of battery troubleshooting operations, the preset battery management system will be re-inspected;

[0009] When no fault is identified, obstacle avoidance measures are taken;

[0010] 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;

[0011] Acquire environmental data, including ambient temperature, ambient humidity, and ambient dust, and perform obstacle avoidance operations based on the environmental data.

[0012] In this solution, the faults that have occurred include battery failure, inverter failure, and communication failure. Clearance operations are performed based on the corresponding safety handling methods, specifically including:

[0013] The battery fault includes a battery overheat fault and a battery overcharge / discharge fault. When a battery overheat fault is identified, the power supply to the battery is disconnected, and a battery overheat alarm is output while continuously controlling the liquid cooling system to cool the battery. 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.

[0014] 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;

[0015] 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.

[0016] 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 the preset trigger method, re-inspecting the battery management system, wherein the trigger method includes a timed and fixed-pattern trigger.

[0017] In this solution, the temperature difference between the battery temperature and the temperature in the liquid cooling pipe is obtained, and obstacle avoidance is performed based on the temperature difference and the battery temperature. Specifically, the following steps are performed:

[0018] Acquiring the battery temperature and the temperature in the liquid cooling pipe based on a sensor group, wherein the sensor group includes a patch temperature sensor provided on the battery pack and a temperature sensor provided in the liquid cooling pipe;

[0019] Calculate the temperature difference between the battery temperature and the temperature inside the liquid cooling pipe, and divide the temperature range based on the battery temperature to avoid obstacles. The division results include a first range, a second range, and a third range. Each division result corresponds to a different temperature difference range, wherein:

[0020] 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;

[0021] If the battery temperature is within a second range and the temperature difference is not within the second temperature difference range, adjusting the flow rate of the coolant;

[0022] If the battery temperature is within a third range and the temperature difference is not within the third temperature difference range, the temperature and flow rate of the coolant are adjusted.

[0023] In this solution, environmental data is obtained and obstacle avoidance operations are performed based on the ambient temperature, specifically including:

[0024] Acquiring ambient temperature based on an ambient temperature sensor disposed on the vehicle body;

[0025] The coolant is preventively adjusted 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 parameters.

[0026] In this solution, obstacle avoidance is performed based on the ambient humidity and ambient dust, specifically including:

[0027] Acquiring ambient humidity based on an ambient humidity sensor disposed on the vehicle body, and acquiring ambient dust based on a dust sensor;

[0028] 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.

[0029] A second aspect of the present invention further provides a system for safely handling a failure of an integrated energy storage device, comprising a memory and a processor. The memory includes a program for safely handling a failure of an integrated energy storage device. When the program is executed by the processor, the following steps are implemented:

[0030] When a fault is identified, troubleshooting is performed, including:

[0031] Existing faults include battery failure, inverter failure, and communication failure, and clearance operations are carried out based on the corresponding safety handling methods;

[0032] After completing the preset number of battery troubleshooting operations, the preset battery management system will be re-inspected;

[0033] When no fault is identified, obstacle avoidance measures are taken;

[0034] 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;

[0035] Acquire environmental data, including ambient temperature, ambient humidity, and ambient dust, and perform obstacle avoidance operations based on the environmental data.

[0036] In this solution, the faults that have occurred include battery failure, inverter failure, and communication failure. Clearance operations are performed based on the corresponding safety handling methods, specifically including:

[0037] The battery fault includes a battery overheat fault and a battery overcharge / discharge fault. When a battery overheat fault is identified, the power supply to the battery is disconnected, and a battery overheat alarm is output while continuously controlling the liquid cooling system to cool the battery. 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.

[0038] 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;

[0039] 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.

[0040] 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 the preset trigger method, re-inspecting the battery management system, wherein the trigger method includes a timed and fixed-pattern trigger.

[0041] In this solution, the temperature difference between the battery temperature and the temperature in the liquid cooling pipe is obtained, and obstacle avoidance is performed based on the temperature difference and the battery temperature. Specifically, the following steps are performed:

[0042] Acquiring the battery temperature and the temperature in the liquid cooling pipe based on a sensor group, wherein the sensor group includes a patch temperature sensor provided on the battery pack and a temperature sensor provided in the liquid cooling pipe;

[0043] Calculate the temperature difference between the battery temperature and the temperature inside the liquid cooling pipe, and divide the temperature range based on the battery temperature to avoid obstacles. The division results include a first range, a second range, and a third range. Each division result corresponds to a different temperature difference range, wherein:

[0044] 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;

[0045] If the battery temperature is within a second range and the temperature difference is not within the second temperature difference range, adjusting the flow rate of the coolant;

[0046] If the battery temperature is within a third range and the temperature difference is not within the third temperature difference range, the temperature and flow rate of the coolant are adjusted.

[0047] In this solution, environmental data is obtained and obstacle avoidance operations are performed based on the ambient temperature, specifically including:

[0048] Acquiring ambient temperature based on an ambient temperature sensor disposed on the vehicle body;

[0049] The coolant is preventively adjusted 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 parameters.

[0050] In this solution, obstacle avoidance is performed based on the ambient humidity and ambient dust, specifically including:

[0051] Acquiring ambient humidity based on an ambient humidity sensor disposed on the vehicle body, and acquiring ambient dust based on a dust sensor;

[0052] 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.

[0053] A third aspect of the present invention provides a computer-readable storage medium, which includes a program for a method for safely handling a failure of an integrated energy storage machine. When the program for safely handling a failure of an integrated energy storage machine is executed by a processor, the steps of a method for safely handling a failure of an integrated energy storage machine as described in any one of the above items are implemented.

[0054] The present invention discloses a method, system, and readable storage medium for safely handling faults of an integrated energy storage device. These methods can identify existing faults and clear them, as well as identify unoccurred faults and avoid them, thereby achieving the dual safety handling guarantees of immediate resolution and prevention of faults upon discovery, thereby improving the safety of the integrated energy storage device and reducing the failure rate. In particular, the method can control the temperature, solving the problem of effective heat dissipation through multiple means such as multi-stage liquid cooling control and advance liquid cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 A flow chart showing a method for safely handling a fault of an integrated energy storage device according to the present invention is shown;

[0056] Figure 2 A block diagram of a safety system for handling energy storage device failures according to the present invention is shown. DETAILED DESCRIPTION

[0057] In order to more clearly understand the above-mentioned objects, 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, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0058] 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 scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0059] Figure 1 A flow chart of a method for safely handling a failure of an integrated energy storage device according to the present application is shown.

[0060] 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:

[0061] When a fault is identified, troubleshooting is performed, including:

[0062] Existing faults include battery failure, inverter failure, and communication failure, and clearance operations are carried out based on the corresponding safety handling methods;

[0063] After completing the preset number of battery troubleshooting operations, the preset battery management system will be re-inspected;

[0064] When no fault is identified, obstacle avoidance measures are taken;

[0065] 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;

[0066] Acquire environmental data, including ambient temperature, ambient humidity, and ambient dust, and perform obstacle avoidance operations based on the environmental data.

[0067] It should be noted that in this embodiment, when performing safety fault management on the energy storage integrated machine, it is not only necessary to perform obstacle clearance operations on existing faults, but more importantly, to perform obstacle avoidance management on faults that have not occurred. Specifically, when an existing fault is identified, obstacle clearance is performed. Existing faults include battery faults, inverter faults, and communication faults. Trouble clearance operations are performed based on corresponding safety handling methods. Due to the continuous innovation and improvement of technology, the handling of existing 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.

[0068] Furthermore, when no fault is identified, obstacle avoidance measures are taken, that is, obstacle avoidance management is performed for no fault, which includes 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, which includes 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 energy storage device performance due to abnormal temperature, or electrical short circuit caused by abnormal humidity, and dust affecting the normal operation of electronic components.

[0069] According to an embodiment of the present invention, the faults that have occurred include battery faults, inverter faults, and communication faults. Clearance operations are performed based on corresponding safety handling methods, specifically including:

[0070] The battery fault includes a battery overheat fault and a battery overcharge / discharge fault. When a battery overheat fault is identified, the power supply to the battery is disconnected, and a battery overheat alarm is output while continuously controlling the liquid cooling system to cool the battery. 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.

[0071] 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;

[0072] 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.

[0073] It should be noted that in this embodiment, over-discharging of the battery causes the battery voltage to drop too low, which may cause battery damage or shorten its life; 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 facilitate real-time understanding of the battery health. 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.

[0074] Furthermore, the inverter is one of the core components of the energy storage device, used to convert the DC power stored in the battery into AC power. 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 load is disconnected, and while the inverter fault alarm is output, the liquid cooling system is continuously controlled to cool the inverter.

[0075] 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.

[0076] According to an embodiment of the present invention, after completing a preset number of battery troubleshooting operations, a re-inspection operation is performed on the preset battery management system, 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 mode, re-inspecting the battery management system, wherein the trigger mode includes a timed and fixed-pattern trigger.

[0077] It should be noted that, in this embodiment, the BMS self-test is a self-diagnostic process for ensuring the health and safety of batteries in the energy storage system. The BMS self-test can detect the battery's 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. However, since no other triggering methods are set, it is easy to cause errors during abnormal detection or errors during normal detection. Therefore, this embodiment describes the counting of battery clearance operations, so that when the count reaches a preset number, the battery management system is triggered to re-check through a timed and fixed pattern. The timing is 5 minutes after the technical number reaches the preset number, and the pattern is a hardware self-test.

[0078] 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:

[0079] Acquiring the battery temperature and the temperature in the liquid cooling pipe based on a sensor group, wherein the sensor group includes a patch temperature sensor provided on the battery pack and a temperature sensor provided in the liquid cooling pipe;

[0080] Calculate the temperature difference between the battery temperature and the temperature inside the liquid cooling pipe, and divide the temperature range based on the battery temperature to avoid obstacles. The division results include a first range, a second range, and a third range. Each division result corresponds to a different temperature difference range, wherein:

[0081] 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;

[0082] If the battery temperature is within a second range and the temperature difference is not within the second temperature difference range, adjusting the flow rate of the coolant;

[0083] If the battery temperature is within a third range and the temperature difference is not within the third temperature difference range, the temperature and flow rate of the coolant are adjusted.

[0084] 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 pipeline. The temperature in the liquid cooling pipeline is very different from the temperature at the coolant inlet. The actual temperature of the coolant in the liquid cooling pipeline can be checked by setting a temperature sensor in the liquid cooling pipeline to further judge the liquid cooling effect.

[0085] 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. Among them, 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.

[0086] 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. If the battery temperature is within the first division range after the division result, 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, and the temperature adjustment is performed without adjusting the flow rate. 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, and the flow rate is adjusted based on a flow rate of 3m / s.

[0087] Table 1. Division results and temperature range

[0088] Division results (temperature) Temperature range First range (15℃-20℃) The first temperature difference range (+3℃, +8℃) Second range [20℃-25℃] Second temperature difference range [-2℃, +3℃] The third range (25℃-30℃) The third temperature difference range is -7℃, -2℃)

[0089] According to an embodiment of the present invention, obtaining environmental data and performing obstacle avoidance operations based on the ambient temperature specifically includes:

[0090] Acquiring ambient temperature based on an ambient temperature sensor disposed on the vehicle body;

[0091] The coolant is preventively adjusted 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 parameters.

[0092] It should be noted that in this embodiment, the influence of ambient temperature on battery temperature is very important, especially in energy storage integrated machines and electric vehicle applications, where 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 an ambient temperature sensor installed on the vehicle body, and then make preventive adjustments to 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.

[0093] Specifically, in order to prevent the impact of extremely low temperatures or extremely high temperatures on the battery, it is necessary to first calculate the rate of change of the ambient temperature and the battery temperature, and then 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 to 0.8 in advance. 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 the activation temperature and the ambient temperature". Among them, the trigger method is that the preventive adjustment obstacle avoidance is activated only when the difference between the ambient temperature and the battery temperature is greater than 23°C, otherwise it is not activated; further, 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 traveling is 48°C, in order to take precautions in advance, it is necessary to calculate the change rate in advance to 0.8. However, since the ambient temperature is much higher than the battery temperature, the coolant temperature needs to be cooled down to 15°C and the flow rate is 2m / s.

[0094] According to an embodiment of the present invention, performing obstacle avoidance based on the ambient humidity and ambient dust specifically includes:

[0095] Acquiring ambient humidity based on an ambient humidity sensor disposed on the vehicle body, and acquiring ambient dust based on a dust sensor;

[0096] 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.

[0097] It should be noted that in this embodiment, the ambient humidity is first obtained based on the ambient humidity sensor installed on the vehicle body, and the ambient dust is obtained based on 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 at the same time to further ensure the stability of the battery. Among them, the parameters actually adjusted are generally to lower the coolant temperature and reduce the flow rate.

[0098] Figure 2 A block diagram of a safety system for handling energy storage device failures according to the present invention is shown.

[0099] like Figure 2 As shown, the present invention discloses a system for safely handling a fault of an integrated energy storage device, including a memory and a processor. The memory includes a program for safely handling a fault of an integrated energy storage device. When the program is executed by the processor, the following steps are implemented:

[0100] When a fault is identified, troubleshooting is performed, including:

[0101] Existing faults include battery failure, inverter failure, and communication failure, and clearance operations are carried out based on the corresponding safety handling methods;

[0102] After completing the preset number of battery troubleshooting operations, the preset battery management system will be re-inspected;

[0103] When no fault is identified, obstacle avoidance measures are taken;

[0104] 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;

[0105] Acquire environmental data, including ambient temperature, ambient humidity, and ambient dust, and perform obstacle avoidance operations based on the environmental data.

[0106] It should be noted that in this embodiment, when performing safety fault management on the energy storage integrated machine, it is not only necessary to perform obstacle clearance operations on existing faults, but more importantly, to perform obstacle avoidance management on faults that have not occurred. Specifically, when an existing fault is identified, obstacle clearance is performed. Existing faults include battery faults, inverter faults, and communication faults. Trouble clearance operations are performed based on corresponding safety handling methods. Due to the continuous innovation and improvement of technology, the handling of existing 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.

[0107] Furthermore, when no fault is identified, obstacle avoidance measures are taken, that is, obstacle avoidance management is performed for no fault, which includes 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, which includes 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 energy storage device performance due to abnormal temperature, or electrical short circuit caused by abnormal humidity, and dust affecting the normal operation of electronic components.

[0108] According to an embodiment of the present invention, the faults that have occurred include battery faults, inverter faults, and communication faults. Clearance operations are performed based on corresponding safety handling methods, specifically including:

[0109] The battery fault includes a battery overheat fault and a battery overcharge / discharge fault. When a battery overheat fault is identified, the power supply to the battery is disconnected, and a battery overheat alarm is output while continuously controlling the liquid cooling system to cool the battery. 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.

[0110] 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;

[0111] 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.

[0112] It should be noted that in this embodiment, over-discharging of the battery causes the battery voltage to drop too low, which may cause battery damage or shorten its life; 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 facilitate real-time understanding of the battery health. 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.

[0113] Furthermore, the inverter is one of the core components of the energy storage device, used to convert the DC power stored in the battery into AC power. 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 load is disconnected, and while the inverter fault alarm is output, the liquid cooling system is continuously controlled to cool the inverter.

[0114] 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.

[0115] According to an embodiment of the present invention, after completing a preset number of battery troubleshooting operations, a re-inspection operation is performed on the preset battery management system, 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 mode, re-inspecting the battery management system, wherein the trigger mode includes a timed and fixed-pattern trigger.

[0116] It should be noted that, in this embodiment, the BMS self-test is a self-diagnostic process for ensuring the health and safety of batteries in the energy storage system. The BMS self-test can detect the battery's 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. However, since no other triggering methods are set, it is easy to cause errors during abnormal detection or errors during normal detection. Therefore, this embodiment describes the counting of battery clearance operations, so that when the count reaches a preset number, the battery management system is triggered to re-check through a timed and fixed pattern. The timing is 5 minutes after the technical number reaches the preset number, and the pattern is a hardware self-test.

[0117] 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:

[0118] Acquiring the battery temperature and the temperature in the liquid cooling pipe based on a sensor group, wherein the sensor group includes a patch temperature sensor provided on the battery pack and a temperature sensor provided in the liquid cooling pipe;

[0119] Calculate the temperature difference between the battery temperature and the temperature inside the liquid cooling pipe, and divide the temperature range based on the battery temperature to avoid obstacles. The division results include a first range, a second range, and a third range. Each division result corresponds to a different temperature difference range, wherein:

[0120] 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;

[0121] If the battery temperature is within a second range and the temperature difference is not within the second temperature difference range, adjusting the flow rate of the coolant;

[0122] If the battery temperature is within a third range and the temperature difference is not within the third temperature difference range, the temperature and flow rate of the coolant are adjusted.

[0123] 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 pipeline. The temperature in the liquid cooling pipeline is very different from the temperature at the coolant inlet. The actual temperature of the coolant in the liquid cooling pipeline can be checked by setting a temperature sensor in the liquid cooling pipeline to further judge the liquid cooling effect.

[0124] 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. Among them, 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.

[0125] 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. If the battery temperature is within the first division range after the division result, 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, and the temperature adjustment is performed without adjusting the flow rate. 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, and the flow rate is adjusted based on a flow rate of 3m / s.

[0126] According to an embodiment of the present invention, obtaining environmental data and performing obstacle avoidance operations based on the ambient temperature specifically includes:

[0127] Acquiring ambient temperature based on an ambient temperature sensor disposed on the vehicle body;

[0128] The coolant is preventively adjusted 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 parameters.

[0129] It should be noted that in this embodiment, the influence of ambient temperature on battery temperature is very important, especially in energy storage integrated machines and electric vehicle applications, where 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 an ambient temperature sensor installed on the vehicle body, and then make preventive adjustments to 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.

[0130] Specifically, in order to prevent the impact of extremely low temperatures or extremely high temperatures on the battery, it is necessary to first calculate the rate of change of the ambient temperature and the battery temperature, and then 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 to 0.8 in advance. 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 the activation temperature and the ambient temperature". Among them, the trigger method is that the preventive adjustment obstacle avoidance is activated only when the difference between the ambient temperature and the battery temperature is greater than 23°C, otherwise it is not activated; further, 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 traveling is 48°C, in order to take precautions in advance, it is necessary to calculate the change rate in advance to 0.8. However, since the ambient temperature is much higher than the battery temperature, the coolant temperature needs to be cooled down to 15°C and the flow rate is 2m / s.

[0131] According to an embodiment of the present invention, performing obstacle avoidance based on the ambient humidity and ambient dust specifically includes:

[0132] Acquiring ambient humidity based on an ambient humidity sensor disposed on the vehicle body, and acquiring ambient dust based on a dust sensor;

[0133] 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.

[0134] It should be noted that in this embodiment, the ambient humidity is first obtained based on the ambient humidity sensor installed on the vehicle body, and the ambient dust is obtained based on 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 at the same time to further ensure the stability of the battery. Among them, the parameters actually adjusted are generally to lower the coolant temperature and reduce the flow rate.

[0135] A third aspect of the present invention provides a computer-readable storage medium, which 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 as described in any one of the above items are implemented.

[0136] The present invention discloses a method, system, and readable storage medium for safely handling faults of an integrated energy storage device. These methods can identify existing faults and clear them, as well as identify unoccurred faults and avoid them, thus achieving dual safety handling guarantees of immediate resolution and prevention of faults upon discovery, thereby improving the safety of the integrated energy storage device and reducing the failure rate.

[0137] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, 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.

[0138] 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 across multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the scheme of this embodiment.

[0139] 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.

[0140] Those skilled in the art will appreciate that all or part of the steps of the above-mentioned method embodiments may be implemented by hardware associated with program instructions, and the aforementioned program may be stored in a computer-readable storage medium. When the program is executed, the program executes the steps of the above-mentioned method embodiments. The aforementioned storage medium includes various media that can store program codes, such as mobile storage devices, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical disks.

[0141] Alternatively, if the integrated units described above are implemented as software modules and sold or used as standalone products, they can also be stored on a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of the present invention, or the portion that contributes to the prior art, can be embodied in the form of a software product. This computer software product, stored on a storage medium, includes instructions for enabling a computer device (such as a personal computer, server, or network device) to execute all or part of the methods described in various embodiments of the present invention. The aforementioned storage media include various media capable of storing program code, such as removable 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 handling methods. Inverter faults include identifying an inverter fault code. When the inverter fault code is identified, the power connection between the inverter and the battery and load is disconnected, and the liquid cooling system is continuously controlled to cool the inverter while outputting an inverter fault alarm. After completing the preset number of battery troubleshooting operations, the preset battery management system will be re-inspected; When no fault is identified, obstacle avoidance measures are taken; Obtaining a temperature difference between a battery temperature and a temperature in a liquid cooling pipe, and performing obstacle avoidance based on the temperature difference and the battery temperature, specifically comprising: obtaining the battery temperature and the temperature in the liquid cooling pipe based on a sensor group, wherein the sensor group includes a patch temperature sensor provided on the battery pack and a temperature sensor provided in the liquid cooling pipe; calculating the temperature difference between the battery temperature and the temperature in the liquid cooling pipe, and performing obstacle avoidance based on a temperature range division result based on the battery temperature, wherein the division result includes a first range, a second range, and a third range, each division result corresponding to a different temperature difference range, wherein, if the battery temperature is within the 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; and if the battery temperature is within the third range and the temperature difference is not within the third temperature difference range, adjusting both the temperature and the flow rate of the coolant; Obtain environmental data, where the environmental data includes ambient temperature, ambient humidity, and ambient dust, and perform obstacle avoidance operations based on the environmental data. The obstacle avoidance operations based on the ambient humidity and ambient dust specifically include obtaining ambient humidity based on an ambient humidity sensor provided on the vehicle body, and obtaining ambient 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, close the preset vents and adjust the coolant temperature and flow rate at the same time.

2. A method for safely handling a fault of an integrated energy storage device according to claim 1, characterized in that: The faults mentioned above include battery faults, inverter faults, and communication faults. Clearance operations are performed based on the corresponding safety measures, including: The battery fault includes a battery overheat fault and a battery overcharge / discharge fault. When a battery overheat fault is identified, the power supply to the battery is disconnected, and a battery overheat alarm is output while continuously controlling the liquid cooling system to cool the battery. 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. 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. The method for safely handling a fault of an integrated energy storage device according to claim 2, characterized in that: After completing a preset number of battery troubleshooting operations, the preset battery management system is re-checked, specifically including: counting once after each battery troubleshooting operation, and when the count number reaches a preset number, responding to a preset trigger mode, re-checking the battery management system, wherein the trigger mode includes a timed and fixed-pattern trigger.

4. The method for safely handling a failure of an integrated energy storage device according to claim 3, wherein: Acquiring environmental data and performing obstacle avoidance operations based on the ambient temperature, specifically including: Acquiring ambient temperature based on an ambient temperature sensor disposed on the vehicle body; The coolant is preventively adjusted 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 parameters.

5. A safety handling system for energy storage integrated machine failure, characterized in that: The system 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 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 handling methods. Inverter faults include identifying an inverter fault code. When the inverter fault code is identified, the power connection between the inverter and the battery and load is disconnected, and the liquid cooling system is continuously controlled to cool the inverter while outputting an inverter fault alarm. After completing the preset number of battery troubleshooting operations, the preset battery management system will be re-inspected; When no fault is identified, obstacle avoidance measures are taken; Obtaining a temperature difference between a battery temperature and a temperature in a liquid cooling pipe, and performing obstacle avoidance based on the temperature difference and the battery temperature, specifically comprising: obtaining the battery temperature and the temperature in the liquid cooling pipe based on a sensor group, wherein the sensor group includes a patch temperature sensor provided on the battery pack and a temperature sensor provided in the liquid cooling pipe; calculating the temperature difference between the battery temperature and the temperature in the liquid cooling pipe, and performing obstacle avoidance based on a temperature range division result based on the battery temperature, wherein the division result includes a first range, a second range, and a third range, each division result corresponding to a different temperature difference range, wherein, if the battery temperature is within the 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; and if the battery temperature is within the third range and the temperature difference is not within the third temperature difference range, adjusting both the temperature and the flow rate of the coolant; Obtain environmental data, where the environmental data includes ambient temperature, ambient humidity, and ambient dust, and perform obstacle avoidance operations based on the environmental data. The obstacle avoidance operations based on the ambient humidity and ambient dust specifically include obtaining ambient humidity based on an ambient humidity sensor provided on the vehicle body, and obtaining ambient 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, close the preset vents and adjust the coolant temperature and flow rate at the same time.

6. The energy storage integrated machine fault safety handling system according to claim 5, characterized in that: The faults mentioned above include battery faults, inverter faults, and communication faults. Clearance operations are performed based on the corresponding safety measures, including: The battery fault includes a battery overheat fault and a battery overcharge / discharge fault. When a battery overheat fault is identified, the power supply to the battery is disconnected, and a battery overheat alarm is output while continuously controlling the liquid cooling system to cool the battery. 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. 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.

7. The energy storage integrated machine fault safety handling system according to claim 6, characterized in that: After completing a preset number of battery troubleshooting operations, the preset battery management system is re-checked, specifically including: counting once after each battery troubleshooting operation, and when the count number reaches a preset number, responding to a preset trigger mode, re-checking the battery management system, wherein the trigger mode includes a timed and fixed-pattern trigger.

8. 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 the method for safely handling a failure of an integrated energy storage device according to any one of claims 1 to 4 are implemented.

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