Energy management method, vehicle and storage medium

Abstract

The invention relates to the technical field of vehicles, and provides an energy management method, a vehicle and a storage medium, and the method comprises the steps: detecting whether the starting performance of an engine in the vehicle is normal or not; if the starting performance is normal, the starting condition of an engine is judged based on the remaining electric quantity of a power battery in the vehicle so as to control the output power of a driving motor in the vehicle, and the air conditioner power of air conditioner equipment is controlled based on the remaining electric quantity and the operation state of the air conditioner equipment in the vehicle; if the starting performance is abnormal, the output power of a driving motor in the vehicle is controlled based on the remaining electric quantity of a power battery in the vehicle so as to control the running state of the vehicle; and controlling the air-conditioning power of the air-conditioning equipment based on the residual electric quantity and the operation state of the air-conditioning equipment in the vehicle. According to the method, the requirements of the stability and the dynamic property of the whole vehicle performance of the hybrid power vehicle can be met in the energy management process.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, relates to the field of energy management technology, and in particular to an energy management method, a vehicle, and a storage medium. Background Art

[0002] Hybrid vehicles (such as plug-in hybrids) integrate dual power sources: an engine and an electric motor. These two work together to optimize fuel economy and performance. Batteries are a key energy source for hybrid vehicles, providing electric drive, assisting the engine, and optimizing energy management, thereby extending the vehicle's range.

[0003] The power battery's State of Charge (SOC) is closely related to the functional stability, economy, and power of a hybrid vehicle. The SOC reflects the remaining charge in the power battery. Improper restrictions on power battery usage can cause the battery to frequently run low or even completely depleted, impacting the stability and power of the hybrid vehicle's performance. It can even prevent the hybrid vehicle from being able to power up when needed. Summary of the Invention

[0004] In view of this, the present application provides an energy management method, a vehicle and a storage medium to solve the problem that improper restrictions on the use of power batteries during energy management may affect the stability and power of the hybrid vehicle's overall performance, and may even cause the hybrid vehicle to be unable to power on when it needs to be restarted.

[0005] A first aspect of an embodiment of the present application provides an energy management method, which is applied to a vehicle, and the method includes: detecting whether the starting performance of the engine in the vehicle is normal; if the starting performance is normal, judging the starting conditions of the engine based on the remaining power of the power battery in the vehicle to control the output power of the drive motor in the vehicle, and controlling the air-conditioning power of the air-conditioning equipment based on the remaining power and the operating status of the air-conditioning equipment in the vehicle; if the starting performance is abnormal, controlling the output power of the drive motor in the vehicle based on the remaining power of the power battery in the vehicle to control the driving status of the vehicle; and controlling the air-conditioning power of the air-conditioning equipment based on the remaining power and the operating status of the air-conditioning equipment in the vehicle.

[0006] In some embodiments, the starting conditions of the engine are determined based on the remaining power of the power battery in the vehicle to control the output power of the drive motor in the vehicle, including: if the remaining power is greater than a first power threshold, prohibiting the engine from starting; if the remaining power is greater than a second power threshold and less than or equal to the first power threshold, starting the engine; if the remaining power is greater than a third power threshold and less than or equal to the second power threshold, starting the engine, and calculating the output power of the drive motor based on the remaining power and a first linear coefficient; if the remaining power is greater than a fourth power threshold and less than or equal to the third power threshold, starting the engine, and calculating the output power of the drive motor based on the generator power, converter power and air-conditioning power of the air-conditioning equipment of the vehicle.

[0007] In some embodiments, when the starting performance is normal and the operating status of the air-conditioning equipment is a situation where a request for enabling a preset function is received, the air-conditioning power of the air-conditioning equipment is controlled based on the remaining power and the operating status of the air-conditioning equipment in the vehicle, including: if the remaining power is greater than a first power threshold, prohibiting the engine from starting; if the remaining power is greater than a fourth power threshold and less than or equal to the first power threshold, starting the engine, and calculating the air-conditioning power based on the discharge power of the power battery, the generator power and the converter power of the vehicle; if the remaining power is less than or equal to the fourth power threshold, calculating the air-conditioning power based on the generator power and the converter power of the vehicle.

[0008] In some embodiments, when the starting performance is normal and the operating status of the air-conditioning equipment is that no request for enabling a preset function has been received, the air-conditioning power of the air-conditioning equipment is controlled based on the remaining power and the operating status of the air-conditioning equipment in the vehicle, including: if the remaining power is greater than a first power threshold, prohibiting the engine from starting; if the remaining power is greater than a fifth power threshold and less than or equal to the first power threshold, starting the engine, and calculating the air-conditioning power based on the discharge power of the power battery, the generator power and the converter power of the vehicle; if the remaining power is greater than a fourth power threshold and less than or equal to the fifth power threshold, starting the engine, and calculating the air-conditioning power based on the generator power and the converter power of the vehicle; if the remaining power is less than or equal to the fourth power threshold, determining the air-conditioning power according to the first power threshold.

[0009] In some embodiments, controlling the output power of the drive motor in the vehicle based on the remaining power of the power battery in the vehicle includes: if the remaining power is greater than a sixth power threshold and less than or equal to a third power threshold, calculating the output power of the drive motor based on the remaining power and a second linear coefficient; if the remaining power is greater than a fourth power threshold and less than or equal to the sixth power threshold, determining the output power of the drive motor according to the second power threshold.

[0010] In some embodiments, when the starting performance is abnormal and the operating status of the air-conditioning equipment is a situation where a request for enabling a preset function is received, the air-conditioning power of the air-conditioning equipment is controlled based on the remaining power and the operating status of the air-conditioning equipment in the vehicle, including: if the remaining power is greater than a fourth power threshold, calculating the air-conditioning power based on the discharge power of the power battery and the converter power of the vehicle; if the remaining power is less than or equal to the fourth power threshold, determining the air-conditioning power according to a third power threshold.

[0011] In some embodiments, when the starting performance is abnormal and the operating status of the air-conditioning equipment is that no request for enabling a preset function has been received, the air-conditioning power of the air-conditioning equipment is controlled based on the remaining power and the operating status of the air-conditioning equipment in the vehicle, including: if the remaining power is greater than a fifth power threshold, calculating the air-conditioning power based on the discharge power of the power battery and the converter power of the vehicle; if the remaining power is greater than a fourth power threshold and less than or equal to the fifth power threshold, determining the air-conditioning power according to the fourth power threshold.

[0012] In some embodiments, the method further includes: if the battery power level is less than or equal to a fourth power threshold, controlling the DC voltage converter of the vehicle to shut down so that the entire vehicle is powered off.

[0013] A second aspect of an embodiment of the present application provides a vehicle, comprising a memory, a processor, and computer-readable instructions stored in the memory and executable on the processor, wherein the processor implements the above-mentioned energy management method when executing the computer-readable instructions.

[0014] A third aspect of an embodiment of the present application provides a computer-readable storage medium, which stores computer-readable instructions. When the computer-readable instructions are executed by a processor, the above-mentioned energy management method is implemented.

[0015] In an energy management method provided by an embodiment of the present application, when the starting performance of the vehicle's engine is normal, the starting conditions of the engine are judged based on the remaining power of the power battery in the vehicle, so as to take into account the impact of the battery power on the economy, power, etc. of the vehicle. Furthermore, the output power of the drive motor in the vehicle is controlled, and the air-conditioning power of the air-conditioning equipment is controlled in combination with the remaining power and the operating status of the air-conditioning equipment in the vehicle. By controlling the output power of the drive motor and the air-conditioning power of the air-conditioning equipment, the stability and power of the entire vehicle are guaranteed, and the hybrid vehicle is prevented from being unable to power on when it needs to be restarted. In the case of abnormal starting performance of the vehicle's engine, it indicates that the engine is faulty or insufficient fuel cannot be started. The output power of the drive motor is controlled based on the remaining power, and the air-conditioning power of the air-conditioning equipment is controlled based on the remaining power and the operating status of the air-conditioning equipment in the vehicle, so as to ensure the stability of the entire vehicle function and the safety of the power battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 This is a device diagram of an energy management method provided in an embodiment of the present application.

[0018] Figure 2 This is a flowchart for implementing the energy management method provided in an embodiment of the present application.

[0019] Figure 3 This is a control flow chart of the output power of the drive motor provided in an embodiment of the present application.

[0020] Figure 4 This is a control flow chart of the output power of a driving motor provided by another embodiment of the present application.

[0021] Figure 5 This is a schematic diagram of controlling the output power of a drive motor provided in an embodiment of the present application.

[0022] Figure 6 This is a control flow chart of the air conditioning power provided in an embodiment of the present application.

[0023] Figure 7 This is a control flow chart of air conditioning power provided by another embodiment of the present application.

[0024] Figure 8 This is a schematic diagram of air conditioning power control provided in an embodiment of the present application.

[0025] Figure 9 This is a structural diagram of the energy management device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0027] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or design schemes. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. It should be understood that, unless otherwise specified in this application, " / " means or. For example, A / B can mean A or B. "And / or" in this application is merely a way to describe the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. "At least one" means one or more. "Multiple" means two or more than two. For example, at least one of a, b or c can mean: a, b, c, a and b, a and c, b and c, a, b and c.

[0029] Hybrid vehicles (such as plug-in hybrids) integrate dual power sources: an engine and an electric motor. These two work together to optimize fuel economy and performance. Batteries are a key energy source for hybrid vehicles, providing electric drive, assisting the engine, and optimizing energy management, thereby extending the vehicle's range.

[0030] The power battery's State of Charge (SOC) is closely related to the functional stability, economy, and power of a hybrid vehicle. The SOC reflects the remaining charge in the power battery. Improper power usage restrictions can cause the battery to frequently run low or even completely depleted, impacting the stability and power of the hybrid vehicle. It can even prevent the vehicle from being able to power up when needed.

[0031] In order to address the problem that improper restrictions on the use of power batteries during energy management may affect the stability and power of hybrid vehicle performance, and may even cause the hybrid vehicle to be unable to power on when it needs to be restarted, the embodiments of the present application provide an energy management method, vehicle, and storage medium. Based on the consideration of the starting performance of the engine, the output power of the drive motor is controlled in combination with the remaining power, and the air conditioning power of the air conditioning device is controlled in combination with the remaining power and the operating status of the air conditioning device. The output power of the drive motor and the air conditioning power of the air conditioning device can be limited, thereby avoiding the problem of poor vehicle power due to frequent low power of the power battery. In addition, when the engine fails or the fuel is insufficient and the vehicle cannot start, the stability of the vehicle function and the safety of the power battery can be guaranteed.

[0032] Figure 1 This is a device diagram of an energy management method provided by an embodiment of the present application. Figure 1 As shown, vehicle 100 includes memory 101, at least one controller 102, at least one communication bus 103, at least one network interface 104, and other user interfaces 105. Controller 102 is configured to implement the energy management method when executing the computer program stored in memory 101. At least one communication bus 103 is configured to enable communication between memory 101 and at least one controller 102. Network interface 104 may include a Wireless Fidelity (Wi-Fi) interface, a 5G interface, or other communication interfaces. User interface 105 may include a USB interface or other standard interfaces.

[0033] In some embodiments, memory 101 stores a computer program that, when executed by at least one controller 102, implements all or part of the steps in the energy management method. For example, the computer program may be divided into one or more modules / units, which are stored in memory 101 and executed by controller 102 to implement the present invention. The one or more modules / units may be a series of computer program instruction segments capable of performing specific functions, which describe the execution process of the computer program in the vehicle.

[0034] In some embodiments, the memory 101 includes a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), a one-time programmable read-only memory (OTPROM), an electronically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, magnetic disk storage, magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.

[0035] In some embodiments, at least one controller 102 is the control core (Control Unit) of vehicle 100. It utilizes various interfaces and circuits to connect various components of vehicle 100. It executes programs or modules stored in memory 101 and accesses data stored in memory 101 to perform various functions and process data for vehicle 100. For example, when executing a computer program stored in memory, at least one controller 102 implements all or part of the steps of the energy management method described in the embodiments of the present application, or implements all or part of the functions of the alarm indicator processing device. At least one controller 102 can be comprised of an integrated circuit, such as a single packaged integrated circuit or multiple packaged integrated circuits with the same or different functions, including one or more central processing units (CPUs), microcontrollers, digital processing chips, graphics controllers, and combinations of various control chips.

[0036] It should be noted that vehicles include but are not limited to hybrid vehicles, such as plug-in hybrid vehicles. Other existing or future electronic products that are suitable for this application should also be included in the scope of protection of this application and incorporated herein by reference.

[0037] Figure 1 The scenarios shown are merely illustrative examples. The energy management method provided in the embodiments of the present application can be applied to vehicles, on-board devices, electronic devices that communicate with vehicles, and the like. In other embodiments, the energy management method provided in the present application can also be applied in other scenarios. The embodiments of the present application do not limit the specific application scenarios of the energy management method. For ease of explanation, the following embodiments will be described using the application of the energy management method to a vehicle, and the vehicle being a hybrid vehicle as an example.

[0038] Figure 2 This is a flow chart of the implementation of the energy management method provided in the embodiment of the present application. The method is applied to hybrid vehicles. Figure 1 The method is described with reference to the vehicle 100 in FIG.

[0039] Step S201 , detecting whether the starting performance of the engine in the vehicle is normal.

[0040] In some embodiments, a start-up test may be performed to detect whether the engine's starting performance is normal. The engine's starting performance may be normal or abnormal. A normal starting performance indicates that the engine can start normally. An abnormal starting performance indicates that the engine cannot start normally.

[0041] During the start test, the engine's starting performance can be determined by monitoring various vehicle parameters, including but not limited to starting speed, oil pressure, charging system voltage, exhaust status, engine indicator light, etc. The embodiments of this application do not limit the specific method for determining the engine's starting performance.

[0042] In step S202, if the starting performance is normal, the engine starting conditions are determined based on the remaining power of the power battery in the vehicle to control the output power of the drive motor in the vehicle, and the air-conditioning power of the air-conditioning equipment is controlled based on the remaining power and the operating status of the air-conditioning equipment in the vehicle.

[0043] In some embodiments, the remaining power of the power battery represents the state of charge (SOC) of the power battery, where SOC=1 indicates that the power battery is fully charged, and SOC=0 indicates that the power battery is depleted.

[0044] In some embodiments, the vehicle is typically equipped with an energy management system that monitors and controls the coordinated operation of different power sources in the vehicle (such as the engine, electric motor, and power battery). As the battery power gradually decreases, pure electric drive will accelerate the consumption of power. In addition, the vehicle's air conditioning equipment will also increase the consumption of battery power. When the battery power is low, the engine can be started to share the driving task. In one example, during a long-distance high-speed cruise, if the vehicle is pure electric and the battery power is low, the battery power will be quickly consumed. If the vehicle starts the engine to intervene and share the driving task when the battery power is low, the cruising range can be increased.

[0045] In some embodiments, if the engine's starting performance is normal, the engine start conditions can be determined based on the remaining battery charge. Multiple different battery charge thresholds can be set to achieve dynamic buffering. Specifically, a first battery charge threshold can be pre-set. By comparing the remaining battery charge with the first battery charge threshold, the vehicle can be prepared to start the engine in advance when the battery charge is relatively sufficient, entering a preparatory state for engine start.

[0046] For example, if the remaining battery level is greater than a first battery threshold, the battery is sufficient and the engine can be disabled. If the remaining battery level is less than or equal to the first battery threshold, the vehicle enters battery maintenance mode. In this mode, the engine is started to share driving duties to achieve an optimal balance between vehicle safety, performance, and energy efficiency.

[0047] When the engine meets the starting conditions, a low battery charge triggers a vehicle shutdown. Therefore, to avoid frequent power-off triggers that impact the user experience, multiple power thresholds can be set to provide a phased buffer for extreme operating conditions. Multiple power thresholds can be used to create multiple power intervals. Within each power interval, the output power of the vehicle's drive motor is controlled based on the remaining power. The air conditioning power of the vehicle's air conditioning system is controlled based on the remaining power and the operating status of the vehicle's air conditioning system. By periodically controlling the output power of the drive motor and the air conditioning power, the purpose of phased buffering is achieved.

[0048] When the engine's starting performance is normal, the specific description of controlling the output power of the drive motor according to the remaining power based on multiple different power thresholds can be found in the following Figure 3 When the engine's starting performance is normal, the specific description of controlling the air conditioning power of the air conditioning device according to the remaining power and the operating status of the air conditioning device in the vehicle can be found in the following Figure 6 The embodiment shown.

[0049] In step S203, if the starting performance is abnormal, the output power of the drive motor in the vehicle is controlled based on the remaining power of the power battery in the vehicle to control the driving state of the vehicle; and the air conditioning power of the air conditioning equipment is controlled based on the remaining power and the operating state of the air conditioning equipment in the vehicle.

[0050] In one embodiment, if an engine malfunctions or runs low on fuel, the engine's starting performance may be abnormal. If the engine fails to start properly, it cannot share driving responsibilities, and the battery drains faster. To minimize the impact of rapid battery drain on the vehicle and its users, the output power of the drive motor and the air conditioning system can be limited to prevent sudden power outages and potential safety issues, such as rear-end collisions. Furthermore, this can prevent deep discharge of the power battery, which can damage it.

[0051] In one embodiment, based on multiple different power thresholds, the output power of the vehicle's drive motor is controlled according to the remaining power of the vehicle's power battery to control the vehicle's driving state. The air conditioning power of the air conditioning device is controlled according to the remaining power and the operating state of the vehicle's air conditioning device. In particular, in the case of abnormal engine starting performance, the specific description of controlling the output power of the vehicle's drive motor based on the remaining power of the vehicle's power battery according to the multiple different power thresholds can be found in the following. Figure 4 The embodiment shown. Based on the multiple different power thresholds set, according to the remaining power and the operating status of the air-conditioning equipment in the vehicle, the specific description of controlling the air-conditioning power of the air-conditioning equipment can be referred to below Figure 7 The embodiment shown.

[0052] Through the above embodiment, when the starting performance of the vehicle's engine is normal, the starting conditions of the engine are determined based on the remaining power of the power battery in the vehicle, so as to take into account the impact of the battery power on the economy, power, etc. of the vehicle. Furthermore, the output power of the drive motor in the vehicle is controlled, and the air-conditioning power of the air-conditioning equipment is controlled in combination with the remaining power and the operating status of the air-conditioning equipment in the vehicle. By controlling the output power of the drive motor and the air-conditioning power of the air-conditioning equipment, the stability and power of the entire vehicle are guaranteed, and the hybrid vehicle is prevented from being unable to power on when it needs to be restarted. In the case of abnormal starting performance of the vehicle's engine, it indicates that the engine is faulty or insufficient fuel cannot be started. By controlling the output power of the drive motor based on the remaining power, and controlling the air-conditioning power of the air-conditioning equipment based on the remaining power and the operating status of the air-conditioning equipment in the vehicle, the stability of the entire vehicle function and the safety of the power battery are guaranteed.

[0053] Figure 3 This is a control flow chart of the output power of the driving motor provided by the embodiment of the present application. Figure 3As shown in the figure, when the engine performance is normal, the engine start condition can be determined based on the remaining power of the vehicle's power battery to control the output power of the vehicle's drive motor. In order to control the output power of the drive motor in stages, multiple power thresholds can be pre-set to impose different limits on the output power of the drive motor in different power ranges. Figure 3 As shown, setting multiple power thresholds in descending order includes a first power threshold, a second power threshold, a third power threshold and a fourth power threshold, which specifically includes the following steps.

[0054] Step S301: determine whether the remaining power is greater than a first power threshold.

[0055] In some embodiments of the present application, if the remaining power is greater than the first power threshold, step S302 is executed. If the remaining power is less than or equal to the first power threshold, step S303 is executed.

[0056] Step S302: prohibit starting the engine.

[0057] In some embodiments of the present application, if the remaining battery level is greater than a first battery level threshold, indicating that the battery level is relatively sufficient, engine starting may be prohibited based on vehicle fuel economy (e.g., a rule prioritizing vehicle power usage). Therefore, if the remaining battery level is greater than the first battery level threshold, the engine starting condition is not met, and engine starting is prohibited.

[0058] Step S303: determine whether the remaining power is greater than a second power threshold.

[0059] In some embodiments of the present application, if the remaining power is greater than the second power threshold, step S304 is executed. If the remaining power is less than or equal to the second power threshold, step S305 is executed.

[0060] Step S304, start the engine.

[0061] In some embodiments, if the remaining battery charge is greater than a second battery charge threshold and less than or equal to the first battery charge threshold, indicating that the current battery charge is low, the engine can be started to share the driving task. Therefore, when the remaining battery charge is greater than the second battery charge threshold and less than or equal to the first battery charge threshold, the engine start conditions are met and the engine is started. When the remaining battery charge is within the range corresponding to the second battery charge threshold and the first battery charge threshold, starting the engine can simultaneously meet the power battery protection and power requirements, and the output power of the current drive motor in the vehicle can be unchanged.

[0062] Step S305: determine whether the remaining power is greater than a third power threshold.

[0063] In some embodiments of the present application, if the remaining power is greater than the third power threshold, step S306 is executed. If the remaining power is less than or equal to the third power threshold, step S307 is executed.

[0064] Step S306 : controlling the output power of the driving motor according to the remaining power and the first linear coefficient.

[0065] In some embodiments, if the remaining power is greater than the third power threshold and less than or equal to the second power threshold, it means that the battery power has dropped to another lower power range. In order to meet the power battery protection and power requirements, when the engine is started, the output power of the drive motor can be controlled according to the remaining power and the first linear coefficient. Among them, the first linear coefficient can be determined in the following way: when the battery power is in the range from the third power threshold to the second power threshold, the output power of the drive motor is adjusted so that the vehicle can operate normally, and energy use can be optimized and overall efficiency can be improved. In this case, the vehicle records the battery power and the corresponding output power of the drive motor, and predicts the first linear coefficient based on the battery power and the corresponding output power of the drive motor. In other embodiments, the first linear coefficient can also be determined by other means. For example, it can be determined by a mathematical model, etc. The embodiment of the present application does not limit the specific determination method.

[0066] In other embodiments of the present application, when the first power threshold is not set and the second and third power thresholds are set, when the remaining power is greater than the third power threshold and less than or equal to the second power threshold, the engine start condition is met and the engine is started. When the engine is started, the output power of the drive motor is controlled based on the remaining power and the first linear coefficient.

[0067] Step S307: determine whether the remaining power is greater than a fourth power threshold.

[0068] In some embodiments, if the remaining power is greater than the fourth power threshold, step S308 is executed. If the remaining power is less than or equal to the fourth power threshold, step S309 is executed.

[0069] Step S308 : Calculate the output power of the driving motor based on the generator power, the converter power, and the air conditioning power of the air conditioning equipment of the vehicle.

[0070] In some embodiments, if the remaining battery power is greater than a fourth battery power threshold and less than or equal to a third battery power threshold, the battery power level is nearing the minimum battery power level. When the engine is started, the output power of the drive motor can be calculated using the vehicle's generator power, converter power, and the air conditioning system's air conditioning power, thereby limiting the output power of the drive motor. This formula is expressed as: Drive Motor Output Power = Generator Power - Converter Power - Air Conditioning System's Air Conditioning Power. The current output power of the drive motor is adjusted to the calculated output power of the drive motor to achieve output power limitation.

[0071] Among them, when the remaining power is in the power range corresponding to the fourth power threshold and the third power threshold, in order to avoid deep discharge of the power battery when it is close to the minimum power, the engine charges the power battery while performing the driving task. At this time, the power battery is only charged but not discharged.

[0072] In other embodiments of the present application, when the first and second power thresholds are not set, when the remaining power is greater than the fourth power threshold and less than or equal to the third power threshold, the engine start condition is met and the engine is started. When the engine is started, the output power of the drive motor is calculated based on the vehicle's generator power, converter power, and air conditioning power of the air conditioning system.

[0073] Step S309 , controlling the DC voltage converter of the vehicle to turn off, so that the entire vehicle is powered off.

[0074] In some embodiments, the battery charge may continue to decrease during the process of charging the power battery without discharging. For example, the engine's charging capacity is limited, especially in low-temperature environments. Engine efficiency decreases, which reduces the charging power and cannot meet the charging needs of the power battery. The battery management system, cooling pump, and on-board low-voltage electrical appliances continue to consume power, especially at low temperatures, as the battery heats up and power consumption increases dramatically. Therefore, when the power battery is only charged and not discharged, the remaining power may be less than the fourth power threshold.

[0075] If the remaining charge is less than the fourth charge threshold, the battery charge is too low and the battery management system cannot stabilize the output voltage, which may cause abnormal operation of the motor controller, converter, etc. If the remaining charge of the power battery is less than the fourth charge threshold, the vehicle's DC voltage converter can be shut down, causing the entire vehicle to be powered off.

[0076] Through the above embodiment, when the engine is performing normally, the output power of the drive motor is controlled in different ways according to the remaining power level of the power battery in different power ranges, thereby avoiding safety issues caused by instantaneous power loss of the entire vehicle. This extends the life of the power battery to a certain extent, meets the vehicle's requirements for fuel economy and power, and ensures the stability of the vehicle's functions and the safety of the power battery.

[0077] Figure 4 This is a control flow chart of the output power of the driving motor provided by another embodiment of the present application. Figure 4 As shown in the figure, when the engine performance is abnormal and the engine cannot share the driving task, the output power of the drive motor can be limited in stages by setting multiple power thresholds based on the remaining power of the power battery to ensure the stability and safety of the vehicle. Figure 4 As shown, setting multiple power thresholds in descending order includes the third power threshold, the sixth power threshold, and the fourth power threshold, which specifically includes the following steps.

[0078] Step S401: determine whether the remaining power is greater than a third power threshold.

[0079] In some embodiments, if the remaining power is greater than the third power threshold, step S402 is performed. If the remaining power is less than or equal to the third power threshold, step S403 is performed.

[0080] Step S402: Unlimiting the output power of the driving motor.

[0081] In some embodiments, if the remaining power is greater than the third power threshold, it means that the current battery power of the power battery is relatively sufficient, and the output power of the drive motor can be unrestricted, that is, it runs at the current output power without changing the output power of the drive motor.

[0082] Step S403: determine whether the remaining power is greater than a sixth power threshold.

[0083] In some embodiments, if the remaining power is greater than the sixth power threshold, step S404 is executed. If the remaining power is less than or equal to the sixth power threshold, step S405 is executed.

[0084] Step S404 : calculating the output power of the driving motor based on the remaining power and the second linear coefficient.

[0085] In one embodiment, the second linear coefficient can be determined by adjusting the output power of the drive motor when the battery charge is between the sixth charge threshold and the third charge threshold so that the vehicle can operate normally, optimize energy use, and improve overall efficiency. In this case, the vehicle records the battery charge and the corresponding output power of the drive motor, and predicts the second linear coefficient based on the battery charge and the corresponding output power of the drive motor. In other embodiments, the second linear coefficient can also be determined by other methods. For example, it can be determined by a mathematical model, etc. The embodiments of this application are not limited to the specific determination method.

[0086] The vehicle starts from the current remaining power and calculates the output power of the drive motor according to the second linear coefficient, so that the output power of the drive motor gradually decreases to retain the vehicle's limp home capability.

[0087] Step S405: determine whether the remaining power is greater than a fourth power threshold.

[0088] In some embodiments, if the remaining power is greater than the fourth power threshold, step S406 is performed. If the remaining power is less than or equal to the fourth power threshold, step S407 is performed.

[0089] Step S406: determining the output power of the driving motor according to the second power threshold.

[0090] In some embodiments, the second power threshold can be customized, for example, the second power threshold can be set to 0 W. If the remaining power is greater than the fourth power threshold and less than or equal to the sixth power threshold, the output power of the drive motor is set to 0 W.

[0091] Step S407 , controlling the DC voltage converter of the vehicle to turn off, so that the entire vehicle is powered off.

[0092] In one embodiment, if the remaining battery charge is less than a fourth charge threshold, it indicates that the battery charge is too low and the battery management system cannot stabilize the output voltage, which may cause abnormal operation of the motor controller, converter, etc. If the remaining battery charge is less than the fourth charge threshold, the vehicle's DC voltage converter can be shut down, causing the entire vehicle to be powered off.

[0093] Through the above embodiment, in the event of abnormal engine performance, the output power of the drive motor is controlled in different ways according to the remaining power level of the power battery in different power ranges, thereby avoiding safety issues caused by instantaneous power loss of the entire vehicle. This extends the life of the power battery to a certain extent, meets the vehicle's requirements for fuel economy and power, and ensures the stability of the vehicle's functions and the safety of the power battery.

[0094] To better understand the Figure 3 and Figure 4 The embodiment shown below is combined with Figure 5 For further description. In order to describe it more concisely and clearly, Figure 5 As shown, the remaining power is represented as SOC, the first power threshold is represented as S1, the second power threshold is represented as S2, the third power threshold is represented as S3, the fourth power threshold is represented as S4, and the sixth power threshold is represented as S6. Among them, S1>S2>S3>S6>S4.

[0095] like Figure 5 As shown, when the engine's starting performance is normal, if SOC > S1, engine starting is prohibited. If S2 < SOC ≤ S1, the engine is started. If S3 < SOC ≤ S2, the output power of the drive motor is limited based on the remaining battery power and a first linear coefficient. If S4 < SOC ≤ S3, the output power of the drive motor is limited based on the vehicle's generator power, converter power, and air conditioning power of the air conditioner. If SOC ≤ S4, the vehicle's DC voltage converter is controlled to shut down, causing the entire vehicle to be powered off.

[0096] like Figure 5 As shown, when the engine's starting performance is abnormal, if SOC > S3, the output power of the drive motor is not restricted. If S6 < SOC ≤ S3, the output power of the drive motor is limited based on the remaining battery capacity and a second linear coefficient, controlling the output power of the drive motor to decrease linearly while preserving limp home capability. If S4 < SOC ≤ S6, the output power of the drive motor can be limited based on a second power threshold, adjusting the output power of the drive motor to 0W. If SOC ≤ S4, the vehicle's DC voltage converter is controlled to shut down, causing the entire vehicle to be powered down.

[0097] In other embodiments of the present application, the vehicle's air conditioning equipment will also consume battery power during operation, and the degree of battery power consumption varies depending on the operating state of the air conditioning equipment. Therefore, the following describes the control process of the air conditioning power of the air conditioning equipment in combination with the engine starting performance and the operating state of the air conditioning equipment. Figure 6 and Figure 7 shown.

[0098] Figure 6 This is a control flow chart of the air conditioning power provided by the embodiment of this application. Figure 6 As shown in FIG, when the engine starting performance is normal, the air conditioning power of the air conditioning equipment can be controlled according to the remaining power and the operating status of the air conditioning equipment in the vehicle. Figure 6 As shown, the following steps are included.

[0099] Step S601: determine whether the running state is receiving a request for enabling a preset function.

[0100] In one embodiment, the operating status includes receiving a request to activate a preset function and not receiving a request to activate the preset function. The preset function may be a battery cooling function or a defrost and defogger function, which is not limited in this application. If the operating status of the air conditioner is receiving a request to activate a preset function, step S602 is executed. If the operating status of the air conditioner is not receiving a request to activate a preset function, step S607 is executed.

[0101] Step S602: determine whether the remaining power is greater than a first power threshold.

[0102] In one embodiment, if the remaining power is greater than the first power threshold, step S603 is executed. If the remaining power is less than or equal to the first power threshold, step S604 is executed.

[0103] Step S603: prohibit starting the engine.

[0104] In one embodiment, when the engine's starting performance is normal, if the remaining battery power is greater than a first battery power threshold, the engine may be controlled not to start. At this point, the battery power is sufficient to drive the vehicle and provide power for the air conditioning system.

[0105] Step S604: determine whether the remaining power is greater than a fourth power threshold.

[0106] In one embodiment, if the remaining power is greater than the fourth power threshold, step S605 is executed. If the remaining power is less than or equal to the fourth power threshold, step S606 is executed.

[0107] Step S605 : starting the engine and calculating the air conditioning power based on the discharge power of the power battery, the generator power of the vehicle, and the converter power.

[0108] In one embodiment, when the remaining battery charge is greater than a fourth battery charge threshold and less than or equal to the first battery charge threshold, the engine start condition is met and the engine is started. If the engine is started and the air conditioning system receives a request to activate a preset function, such as battery cooling or defrosting, this may increase battery consumption. To avoid accelerated battery drain, the air conditioning system's air conditioning power can be calculated based on the power battery discharge power, the vehicle's generator power, and the converter power to limit the air conditioning power. This is expressed as: Air conditioning power = generator power - converter power. The current air conditioning power is adjusted to the calculated air conditioning power.

[0109] Step S606 , calculating the air conditioning power based on the generator power and the converter power of the vehicle.

[0110] In one embodiment, if the remaining battery charge is less than or equal to a fourth charge threshold, the battery charge is too low, and the battery management system cannot stabilize the output voltage, potentially causing malfunctions in the motor controller, converter, and other components. If the remaining battery charge is less than the fourth charge threshold, the air conditioning power can be calculated based on the vehicle's generator power and converter power to control the air conditioning power. This is expressed as: Air conditioning power = generator power - converter power. Furthermore, the vehicle's DC voltage converter is shut down and powered down for a short period of time.

[0111] Step S607: determine whether the remaining power is greater than a first power threshold.

[0112] In one embodiment, if the remaining power is greater than the first power threshold, step S608 is executed. If the remaining power is less than or equal to the first power threshold, step S609 is executed.

[0113] Step S608: prohibit starting the engine.

[0114] In one embodiment, when the engine's starting performance is normal and the remaining battery charge exceeds a first battery charge threshold, the engine may be disabled. At this point, the battery charge is sufficient to power the vehicle and the air conditioning system. If the engine does not need to be started, the air conditioning system's power may not be limited.

[0115] Step S609: determine whether the remaining power is greater than a fifth power threshold.

[0116] In some embodiments, if the remaining power is greater than the fifth power threshold, step S610 is performed. If the remaining power is less than or equal to the fifth power threshold, step S611 is performed.

[0117] In step S610 , the engine is started, and the air conditioning power is calculated based on the discharge power of the power battery, the generator power of the vehicle, and the converter power.

[0118] In some embodiments, if the air conditioning device does not receive a request to enable a preset function, for example, the preset function may be a battery cooling or defrosting and defogging function, the battery power will not be consumed so quickly. When the remaining power is greater than the fifth power threshold and less than or equal to the first power threshold, the engine start condition is met and the engine is started. When the engine is started, since the operation of the air conditioning device will aggravate the loss of battery power, the air conditioning power can be calculated based on the discharge power of the power battery, the power generation power of the vehicle and the converter power. It can be expressed as: air conditioning power = discharge power of the power battery + power generation power of the vehicle - converter power. The operation of the vehicle is controlled according to the air conditioning power.

[0119] Step S611: determine whether the remaining power is greater than a fourth power threshold.

[0120] In some embodiments, if the remaining power is greater than the fourth power threshold, step S612 is performed. If the remaining power is less than or equal to the fourth power threshold, step S613 is performed.

[0121] In step S612 , the air conditioning power is calculated based on the generator power and the converter power of the vehicle.

[0122] In some embodiments, if the remaining battery level is greater than a fourth battery threshold and less than or equal to a fifth battery threshold, satisfying the generator start condition, the engine is started. When the engine is started, the air conditioning power can be calculated based on the vehicle's generator power and converter power to further limit air conditioning power and avoid further battery drain. This can be expressed as: Air conditioning power = generator power - converter power.

[0123] Step S613: determining the air conditioning power according to the first power threshold, and turning off the DC voltage converter.

[0124] In some embodiments, if the remaining battery power is less than or equal to the fourth power threshold, the battery power is too low, and the battery management system cannot stabilize the output voltage, which may cause abnormal operation of the motor controller, converter, etc. If the remaining battery power is less than or equal to the fourth power threshold, the air conditioner power is determined based on the first power threshold. For example, the first power threshold may be 0W. The air conditioner power is adjusted to 0W, and the DC voltage converter is turned off.

[0125] The above embodiment comprehensively considers the engine starting performance and the operating status of the air conditioning system. If the engine starting performance is normal, the air conditioning system's air conditioning power is limited based on the remaining battery power and the vehicle's air conditioning system operating status, meeting the requirements for vehicle functional stability and power battery safety.

[0126] Figure 7 This is a control flow chart of air conditioning power provided by another embodiment of the present application. Figure 7 As shown in FIG, in the case of abnormal engine performance, the air conditioning power of the air conditioning equipment can be controlled according to the remaining power and the operating status of the air conditioning equipment in the vehicle. Figure 7 As shown, the following steps are included.

[0127] Step S701: determine whether the running state is receiving a request for enabling a preset function.

[0128] In one embodiment, the operating status includes receiving a request to activate a preset function and not receiving a request to activate the preset function. The preset function may be a battery cooling function or a defrost and defogger function, which is not limited in this application. If the operating status of the air conditioner is receiving a request to activate a preset function, step S702 is executed. If the operating status of the air conditioner is not receiving a request to activate a preset function, step S705 is executed.

[0129] Step S702: determine whether the remaining power is greater than a fourth power threshold.

[0130] In one embodiment, if the remaining power is greater than the fourth power threshold, step S703 is executed. If the remaining power is less than or equal to the fourth power threshold, step S704 is executed.

[0131] Step S703 : Calculate the air conditioning power based on the discharge power of the power battery and the converter power of the vehicle.

[0132] In one embodiment, if the engine's starting performance is abnormal and the engine is unable to share driving responsibilities, the air conditioning system's operating state is receiving a request to activate a preset function, which accelerates battery power consumption. Therefore, if the remaining power is greater than a fourth power threshold, indicating that the battery power has not yet reached the lower power limit, the air conditioning power can be limited based on the power battery discharge power and the vehicle's converter power. The air conditioning power is calculated using the formula: air conditioning power = power battery discharge power - converter power. The air conditioning power is limited by adjusting the air conditioning system's current output power to the calculated air conditioning power.

[0133] Step S704: determining the air conditioning power according to the third power threshold.

[0134] In one embodiment, if the remaining battery power is less than or equal to the fourth battery power threshold, indicating that the battery power has dropped below the lower limit of the battery power, the air conditioning power can be determined based on the third power threshold. The third power threshold can be 0W. The air conditioning power of the air conditioner is adjusted to 0W, and the vehicle's DC voltage converter is turned off, shutting down the power for a short period of time.

[0135] Step S705 , determining whether the remaining power is greater than a fifth power threshold.

[0136] In one embodiment, if the remaining power is greater than the fifth power threshold, step S706 is executed. If the remaining power is less than or equal to the fifth power threshold, step S707 is executed.

[0137] Step S706 : Calculate the air conditioning power based on the discharge power of the power battery and the converter power of the vehicle.

[0138] In one embodiment, if the startup performance is abnormal and the air conditioner is operating in the state of not receiving a request to activate a preset function, and the remaining power is greater than a fifth power threshold, the air conditioner power can be limited based on the power battery discharge power and the vehicle's converter power. This is calculated using the formula: Air Conditioner Power = Power Battery Discharge Power - Converter Power. The air conditioner power is limited by adjusting the current output power of the air conditioner to the calculated power.

[0139] Step S707: determine whether the remaining power is greater than a fourth power threshold.

[0140] In one embodiment, if the remaining power is greater than the fourth power threshold, step S708 is executed. If the remaining power is less than or equal to the fourth power threshold, step S709 is executed.

[0141] Step S708: Determine the air conditioning power according to the fourth power threshold.

[0142] In one embodiment, if the remaining battery power is less than or equal to a fourth battery power threshold, indicating that the battery power has dropped below the lower limit of the battery power, the air conditioning power can be determined based on a fourth power threshold. The fourth power threshold can be 0W. The air conditioning power of the air conditioner is adjusted to 0W, and the vehicle's DC voltage converter is turned off, shutting down the power for a short period of time.

[0143] Step S709: Control the DC voltage converter of the vehicle to turn off, so that the entire vehicle is powered off.

[0144] In one embodiment, if the remaining battery charge is less than a fourth charge threshold, it indicates that the battery charge is too low and the battery management system cannot stabilize the output voltage, which may cause abnormal operation of the motor controller, converter, etc. If the remaining battery charge is less than the fourth charge threshold, the vehicle's DC voltage converter can be shut down, causing the entire vehicle to be powered off.

[0145] The above embodiment comprehensively considers the engine starting performance and the operating status of the air conditioning system. In the event of abnormal engine starting performance, to avoid accelerating battery power consumption, the air conditioning system's air conditioning power is limited based on the remaining battery power and the operating status of the vehicle's air conditioning system, thereby ensuring the stability of the vehicle's functions and the safety of the power battery.

[0146] To better understand the Figure 6 and Figure 7 The embodiment shown below is combined with Figure 8 For further description. In order to describe it more concisely and clearly, Figure 8As shown, the remaining power is represented as SOC, the first power threshold is represented as S1, the second power threshold is represented as S2, the third power threshold is represented as S3, the fourth power threshold is represented as S4, and the fifth power threshold is represented as S5. Among them, S1>S2>S3>S5>S4.

[0147] like Figure 8 As shown, when the engine's starting performance is normal and the air conditioning system receives a request to activate a preset function, if SOC>S1, engine starting is prohibited. If S4<SOC≤S1, the engine is started and the air conditioning power is calculated based on the power battery discharge power, the vehicle's generator power, and the converter power. If SOC≤S4, the air conditioning power is calculated based on the vehicle's generator power and the converter power.

[0148] like Figure 8 As shown, when the engine's starting performance is normal and the air conditioning system has not received a request to activate a preset function, if SOC > S1, engine starting is prohibited. If S5 < SOC ≤ S1, the engine is started and the air conditioning power is calculated based on the power battery discharge power, the vehicle's generator power, and the converter power. If S4 < SOC ≤ S5, the air conditioning power is calculated based on the vehicle's generator power and converter power. If SOC ≤ S4, the air conditioning power is determined based on the first power threshold and the DC voltage converter is disabled.

[0149] like Figure 8 As shown, when the engine's starting performance is abnormal and the air conditioning system receives a request to activate a preset function, if SOC>S4, the air conditioning power is calculated based on the power battery's discharge power and the vehicle's converter power. If SOC≤S4, the air conditioning power is determined based on a third power threshold.

[0150] like Figure 8 As shown, when the engine's starting performance is abnormal and the air conditioning system has not received a request to activate a preset function, if SOC>S5, the air conditioning power is calculated based on the power battery discharge power and the vehicle's converter power. If S4<SOC≤S5, the air conditioning power is determined based on a fourth power threshold. If SOC≤S4, the vehicle's DC voltage converter is controlled to shut down, causing the entire vehicle to be powered off.

[0151] Combine Figure 5 and Figure 8As shown, all power thresholds include a first power threshold, a second power threshold, a third power threshold, a fourth power threshold, a fifth power threshold and a sixth power threshold. These power thresholds are arranged in descending order as follows: a first power threshold S1, a second power threshold S2, a third power threshold S3, a fifth power threshold S5, a sixth power threshold S6, and a fourth power threshold S4. Among them, these power thresholds can be set based on the type and capacity of the power battery, the vehicle parameters of the vehicle in which they are located, etc., and can also be calibrated through multiple tests or based on experience. The embodiment of the present application does not limit the specific acquisition method of the first to sixth power thresholds, as well as the specific settings.

[0152] In other embodiments, the multiple power thresholds may include other numbers of power thresholds, which are not limited in the present embodiment.

[0153] Figure 9 This is a structural diagram of the energy management device provided in the embodiment of the present application, which can implement the details of the energy management method in the above embodiment and achieve the same effect. Figure 9 As shown, the energy management device 90 includes: a detection module 910, which is used to detect whether the starting performance of the engine in the vehicle is normal; a first execution module 920, which is used to determine the starting condition of the engine based on the remaining power of the power battery in the vehicle if the starting performance is normal, so as to control the output power of the drive motor in the vehicle, and control the air-conditioning power of the air-conditioning equipment based on the remaining power and the operating status of the air-conditioning equipment in the vehicle; a second execution module 930, which is used to control the output power of the drive motor in the vehicle based on the remaining power of the power battery in the vehicle to control the driving state of the vehicle if the starting performance is abnormal; and control the air-conditioning power of the air-conditioning equipment based on the remaining power and the operating status of the air-conditioning equipment in the vehicle.

[0154] The specific definition of energy management device 90 can be found in the definition of the energy management method above and will not be repeated here. Each module in energy management device 90 may be implemented in whole or in part through software, hardware, or a combination thereof. Each module may be embedded in or independent of the vehicle's processor in hardware form, or may be stored in the vehicle's memory in software form, allowing the processor to call and execute the corresponding operations of each module.

[0155] An embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored. The computer program includes program instructions. The method implemented when the program instructions are executed can refer to the energy management method in the above-mentioned embodiments of the present application. The computer-readable storage medium may be the internal memory of the vehicle in the above-mentioned embodiments, such as the vehicle's hard drive or memory. The computer-readable storage medium may also be an external device, such as a plug-in hard drive, a Smart Media Card (SMC), a Secure Digital (SD) card, or a flash memory card. Furthermore, the computer-readable storage medium may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function, etc.; the data storage area may store data created according to the use of the vehicle, etc.

[0156] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. An energy management method, applied to a vehicle, characterized in that: The method comprises: detecting whether the starting performance of the engine in the vehicle is normal; If the starting performance is normal, determining the engine starting condition based on the remaining power of the power battery in the vehicle to control the output power of the drive motor in the vehicle, and controlling the air conditioning power of the air conditioning device based on the remaining power and the operating status of the air conditioning device in the vehicle; If the starting performance is abnormal, the output power of the drive motor in the vehicle is controlled based on the remaining power of the power battery in the vehicle to control the driving state of the vehicle; and the air-conditioning power of the air-conditioning equipment is controlled based on the remaining power and the operating state of the air-conditioning equipment in the vehicle.

2. The energy management method according to claim 1, wherein: Determining a start condition of the engine based on the remaining power of the power battery in the vehicle to control the output power of the drive motor in the vehicle includes: If the remaining power is greater than a first power threshold, prohibiting the engine from starting; If the remaining power is greater than a second power threshold and less than or equal to the first power threshold, starting the engine; If the remaining power is greater than a third power threshold and less than or equal to the second power threshold, starting the engine and calculating the output power of the drive motor based on the remaining power and a first linear coefficient; If the remaining power is greater than a fourth power threshold and less than or equal to the third power threshold, the engine is started, and the output power of the drive motor is calculated based on the generator power, converter power and air conditioning power of the air conditioning equipment of the vehicle.

3. The energy management method according to claim 1, wherein: In a case where the starting performance is normal and the operating state of the air-conditioning device is receiving an activation request for a preset function, controlling the air-conditioning power of the air-conditioning device based on the remaining power and the operating state of the air-conditioning device in the vehicle includes: If the remaining power is greater than a first power threshold, prohibiting the engine from starting; If the remaining power is greater than a fourth power threshold and less than or equal to the first power threshold, starting the engine and calculating the air conditioner power based on the discharge power of the power battery, the generator power, and the converter power of the vehicle; If the remaining power is less than or equal to the fourth power threshold, the air conditioner power is calculated based on the generator power and the converter power of the vehicle.

4. The energy management method according to claim 1, wherein: When the starting performance is normal and the operating state of the air-conditioning device is that no activation request for a preset function has been received, controlling the air-conditioning power of the air-conditioning device based on the remaining power and the operating state of the air-conditioning device in the vehicle includes: If the remaining power is greater than a first power threshold, prohibiting the engine from starting; If the remaining power is greater than a fifth power threshold and less than or equal to the first power threshold, starting the engine and calculating the air conditioner power based on the discharge power of the power battery, the generator power of the vehicle, and the converter power; If the remaining power is greater than a fourth power threshold and less than or equal to the fifth power threshold, starting the engine and calculating the air conditioner power based on the generator power and converter power of the vehicle; If the remaining power is less than or equal to the fourth power threshold, the air conditioning power is determined according to the first power threshold.

5. The energy management method according to claim 1, wherein: The controlling the output power of the drive motor in the vehicle based on the remaining power of the power battery in the vehicle includes: If the remaining power is greater than a sixth power threshold and less than or equal to a third power threshold, calculating the output power of the drive motor based on the remaining power and a second linear coefficient; If the remaining power is greater than the fourth power threshold and less than or equal to the sixth power threshold, the output power of the drive motor is determined according to the second power threshold.

6. The energy management method according to claim 1, wherein: In the case where the startup performance is abnormal and the operating state of the air-conditioning device is receiving a request to activate a preset function, controlling the air-conditioning power of the air-conditioning device based on the remaining power and the operating state of the air-conditioning device in the vehicle includes: If the remaining power is greater than a fourth power threshold, calculating the air conditioning power based on the discharge power of the power battery and the converter power of the vehicle; If the remaining power is less than or equal to the fourth power threshold, the air conditioning power is determined according to the third power threshold.

7. The energy management method according to claim 1, wherein: In the case where the startup performance is abnormal and the operating state of the air-conditioning device is that no activation request for a preset function has been received, controlling the air-conditioning power of the air-conditioning device based on the remaining power and the operating state of the air-conditioning device in the vehicle includes: If the remaining power is greater than a fifth power threshold, calculating the air conditioning power based on the discharge power of the power battery and the converter power of the vehicle; If the remaining power is greater than the fourth power threshold and less than or equal to the fifth power threshold, the air conditioning power is determined according to the fourth power threshold.

8. The energy management method according to claim 1, wherein: The method further comprises: If the battery power level is less than or equal to a fourth power level threshold, the DC voltage converter of the vehicle is controlled to be turned off, so that the entire vehicle is powered off.

9. A vehicle, characterized in that: The method comprises a memory, a processor, and computer-readable instructions stored in the memory and executable on the processor, wherein the computer-readable instructions are executed by the processor to implement the energy management method according to any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-readable instructions, and when the computer-readable instructions are executed by a processor, the energy management method according to any one of claims 1 to 8 is implemented.

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