Vehicle power management method, device, electronic device and storage medium

Abstract

The embodiments of the present application disclose a method, device, equipment and storage medium for power management of a vehicle. The method includes: obtaining the power supply status of the vehicle at the current moment, the power supply status including the low-voltage power supply status of the power supply and the real-time load status of the power supply; if the low-voltage power supply status meets the preset load dumping condition, determining the functional load of the vehicle based on the real-time load status; determining the target load dumping strategy corresponding to the functional load of the vehicle based on the low-voltage power supply status, and controlling the vehicle to execute the target load dumping strategy. The embodiments of the present application can achieve appropriate load dumping of the vehicle after the low-voltage power supply status of the power supply is unbalanced, so as to avoid deep discharge of the vehicle affecting the vehicle startup and the life of the vehicle battery pack.

Description

Technical Field

[0001] The present application relates to the field of intelligent driving generation technology, and specifically to a vehicle power management method, device, electronic device, and computer-readable storage medium. Background Art

[0002] As new energy vehicles enter more and more families, the quality of new energy vehicle power management determines whether new energy vehicles can win in the fierce market competition. At present, the energy management of new energy vehicles mainly focuses on power, high voltage, and heat dissipation system management. The low-voltage power supply system is restricted by the traditional electronic and electrical architecture and cannot be adjusted on demand.

[0003] In the low-voltage state, new energy vehicles rely on batteries to supply power to the low-voltage parts of the vehicle, that is, to supply power to the low-voltage parts of the vehicle and to charge the battery when the battery is low, and low-voltage power supply is a necessary condition for high-voltage power supply. The low-voltage power supply balance requirement of the vehicle can provide sufficient power to various electrical equipment and ensure the charging of the battery at the same time.

[0004] If the low-voltage power supply system is abnormal, the low-voltage power supply balance of the entire vehicle will be unbalanced, causing the power stored in the low-voltage battery to continue to decrease, making it impossible to restart the vehicle. Deep discharge again will also affect the life of the battery. Summary of the invention

[0005] To solve the above technical problems, embodiments of the present application provide a vehicle power management method and device, an electronic device, and a computer-readable storage medium.

[0006] According to one aspect of an embodiment of the present application, a vehicle power management method is provided, including: obtaining the power supply status of the vehicle at a current moment, the power supply status including the low-voltage power supply status of the power supply and the real-time load status of the power supply; if the low-voltage power supply status meets a preset load dumping condition, determining the functional load of the vehicle based on the real-time load status; determining a target load dumping strategy corresponding to the functional load of the vehicle based on the low-voltage power supply status, and controlling the vehicle to execute the target load dumping strategy.

[0007] According to one aspect of an embodiment of the present application, the low-voltage power supply state includes a low-voltage abnormal power supply state, and the method further includes: if the gear state of the vehicle is in a non-parking gear, obtaining the low-voltage power supply data of the power supply; if the low-voltage power supply data indicates that the DC power converter of the power supply is in an abnormal state, determining that the power supply is in a low-voltage abnormal power supply state; if the power supply is in a low-voltage abnormal power supply state, determining that the low-voltage power supply state meets a preset load dumping condition.

[0008] According to one aspect of an embodiment of the present application, the method includes: if the low-voltage power supply state of the power supply is a low-voltage abnormal power supply state, obtaining a preset load dumping strategy of the vehicle, and using the preset load dumping strategy as a target load dumping strategy corresponding to a functional load of the vehicle.

[0009] According to one aspect of an embodiment of the present application, the method also includes: if the low-voltage power supply state of the power supply is a low-voltage normal power supply state, determining the functional overload level of the vehicle based on the real-time load state; if the functional overload level reaches a preset functional overload level threshold, determining a target load dumping strategy corresponding to the functional load of the vehicle based on the functional overload level.

[0010] According to one aspect of an embodiment of the present application, the method also includes: if the low-voltage power supply state of the power supply is a low-voltage normal power supply state, and the functional load of the vehicle is a first preset overload level, then determining that the target load dumping strategy corresponding to the functional load of the vehicle is a first-level load dumping strategy; obtaining the real-time functional load state of the power supply, if the real-time functional load state does not exceed the first preset overload level, then controlling the target load dumping strategy corresponding to the functional load of the vehicle to jump from the first-level load dumping strategy to the second-level load dumping strategy, wherein the load amount of the first preset overload level is greater than the second preset overload level.

[0011] According to one aspect of an embodiment of the present application, the method also includes: obtaining a real-time functional load status of the power supply, and if the real-time functional load status exceeds the first preset overload level, controlling the target load dumping strategy corresponding to the functional load of the vehicle to jump from the first-level load dumping strategy to the third-level load dumping strategy, wherein the third-level load dumping strategy is different from the target load dumping function targeted by the first-level load dumping strategy.

[0012] According to one aspect of an embodiment of the present application, the method also includes: obtaining the load function of the vehicle and the power consumption corresponding to the load function; dividing the vehicle into a first-level load dumping strategy, a second-level load dumping strategy and a third-level load dumping strategy based on the load function of the vehicle and the power consumption corresponding to the load.

[0013] According to one aspect of an embodiment of the present application, a power management device for a vehicle is provided, the device comprising: an acquisition module, used to acquire the power supply status of the vehicle at the current moment, the power supply status including the low-voltage power supply status of the power supply and the real-time load status of the power supply; a determination module, used to determine the functional load of the vehicle based on the real-time load status if the low-voltage power supply status meets a preset load dumping condition; a control module, used to determine the target load dumping strategy corresponding to the functional load of the vehicle based on the low-voltage power supply status, and control the vehicle to execute the target load dumping strategy. According to one aspect of an embodiment of the present application, an electronic device is provided, comprising: one or more processors; a storage device, used to store one or more programs, when the one or more programs are executed by the one or more processors, the electronic device implements the vehicle power management method as described above.

[0014] According to one aspect of an embodiment of the present application, a computer-readable storage medium is provided, on which computer-readable instructions are stored. When the computer-readable instructions are executed by a processor of a computer, the computer executes the vehicle power management method as described above.

[0015] In the technical solution provided in the embodiments of the present application, the functional load of the vehicle is determined according to the power supply state of the vehicle at the current moment, the low-voltage power supply state in the power supply state and the real-time load state, and when the low-voltage power supply state of the vehicle meets the preset load dumping condition, the target load dumping strategy corresponding to the functional load of the vehicle is determined based on the low-voltage power supply state, so as to achieve appropriate load dumping of the vehicle after the low-voltage power supply state of the power source is unbalanced, thereby avoiding deep discharge of the vehicle affecting the vehicle starting and the life of the vehicle battery pack.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0018] Figure 1 is a schematic diagram of an implementation environment for power management of a vehicle shown in an exemplary embodiment of the present application;

[0019] Figure 2 is a flow chart of a vehicle power management method shown in an exemplary embodiment of the present application;

[0020] Figure 3 is a flow chart of a vehicle power management method shown in another exemplary embodiment of the present application;

[0021] Figure 4 is a flow chart of a vehicle power management method shown in another exemplary embodiment of the present application;

[0022] Figure 5 is a flow chart of a vehicle power management method shown in another exemplary embodiment of the present application;

[0023] Figure 6 is a flow chart of a vehicle power management method shown in another exemplary embodiment of the present application;

[0024] Figure 7 is a schematic diagram of a brief process of power management of a vehicle in an exemplary application scenario;

[0025] Figure 8 is a block diagram of a power management device for a vehicle shown in an exemplary embodiment of the present application;

[0026] Fig. 9 A schematic diagram of the structure of a computer system suitable for implementing an electronic device of an embodiment of the present application is shown. DETAILED DESCRIPTION

[0027] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0028] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0029] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0030] The term "multiple" as used in this application refers to two or more than two. "And / or" describes the relationship between related 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. The character " / " generally indicates that the related objects are in an "or" relationship.

[0031] First of all, it should be noted that the low-voltage power supply system of new energy vehicles is mainly composed of power battery packs, DCDC modules and low-voltage batteries. The DCDC module is the core of high-low voltage conversion, responsible for safely and effectively converting the high voltage electricity of the power battery into low voltage electricity, providing a stable low-voltage power supply for the vehicle.

[0032] When the vehicle is started, low-voltage electricity is mainly supplied by low-voltage batteries. After the power battery pack is powered on, high-voltage DC is transmitted to the DCDC module through the high-voltage power distribution system. The DCDC module is responsible for converting high-voltage DC into low-voltage DC, thereby providing power for the low-voltage equipment of the entire vehicle. During the conversion process, the ECU (electronic control unit) controls the on and off of the IGBT (insulated gate bipolar transistor) to adjust the current path and generate the required low-voltage output. When the low-voltage battery voltage is detected to be insufficient, the DCDC module will also charge the low-voltage battery to ensure the normal operation of the system.

[0033] The low-voltage power supply system of new energy vehicles is mainly composed of a power battery pack, a DCDC module and a low-voltage battery. In this system, the DCDC module plays a key role. It is responsible for converting the high-voltage electricity of the power battery into low-voltage electricity, and providing a stable power supply for the low-voltage components of the vehicle. Functions of the DCDC module: Supply power to the low-voltage components of the vehicle: When the vehicle is in a low-voltage state, the DCDC module will convert the high-voltage electricity of the power battery into low-voltage electricity, and provide a stable power supply for the low-voltage electrical equipment of the whole vehicle, such as control modules, audio systems, lighting systems, instrument systems, door lock systems, environmental perception systems, etc. These devices usually use 12V low-voltage electricity; Charge the low-voltage battery: When the low-voltage battery is detected to be low in power, the DCDC module will also charge the low-voltage battery to ensure the normal operation of the system. This function ensures that the battery can have sufficient power supply when needed.

[0034] In new energy vehicles, low voltage electricity is a necessary condition for high voltage on the vehicle. This is because some high voltage equipment, such as motor controllers, electric compressors, etc., require stable low voltage electricity to control their operation. These high voltage equipment can only work normally when low voltage electricity is supplied normally. The low voltage power supply system of the whole vehicle needs to meet certain balance requirements, that is, it can provide sufficient power to each electrical device while ensuring the charging of the battery. This requires the DCDC module to have efficient conversion capabilities and precise control capabilities to ensure the stable operation of the system.

[0035] Specifically, the vehicle's low-voltage power supply system needs to meet the following requirements: Sufficient power supply: The system needs to provide sufficient power for each electrical device to meet its normal operation needs, which requires the DCDC module to have sufficient output power and stable output voltage; Accurate charging control: When the low-voltage battery is low on power, the DCDC module needs to be accurately controlled to charge the battery to avoid overcharging or undercharging.

[0036] Figure 1 FIG. 1 is a schematic diagram of an implementation environment of vehicle power management according to an exemplary embodiment of the present application. Figure 1 As shown, during the operation of the vehicle, the smart terminal 110 obtains the current power supply status of the vehicle, and then sends the current power supply status of the vehicle to the server 120. The server 120 parses the low-voltage power supply status of the vehicle power supply and the real-time load status of the power supply from the power supply status. The server 120 determines that the low-voltage power supply status of the battery pack meets the preset load dumping condition, and then the real-time load status of the battery pack determines the functional load of the vehicle, and then determines the target load dumping strategy corresponding to the vehicle according to the low-voltage power supply status and the functional load of the vehicle, and then controls the vehicle to execute the target load dumping strategy, thereby realizing the management of the low-voltage power supply system of the vehicle's power supply. Among them, Figure 1 The smart terminal 110 shown can be any terminal device that supports the installation of navigation map software, such as a smart phone, a car computer, a tablet computer, a laptop computer, or a wearable device, but is not limited thereto. Figure 1 The server 120 shown, for example, can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server that provides cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, CDN (Content Delivery Network), and basic cloud computing services such as big data and artificial intelligence platforms, which are not limited here. The smart terminal 110 can communicate with the server 120 through wireless networks such as 3G (third generation mobile information technology), 4G (fourth generation mobile information technology), and 5G (fifth generation mobile information technology), which are not limited here.

[0037] In the low-voltage state, new energy vehicles rely on batteries to supply power to the low-voltage parts of the vehicle, that is, to supply power to the low-voltage parts of the vehicle and to charge the battery when the battery is low, and low-voltage power supply is a necessary condition for high-voltage power supply. The low-voltage power supply balance requirement of the vehicle can provide sufficient power to various electrical equipment and ensure the charging of the battery at the same time.

[0038] If the low-voltage power supply system is abnormal, the low-voltage power supply balance of the entire vehicle will be unbalanced, causing the power stored in the low-voltage battery to continue to decrease, making it impossible to restart the vehicle. Deep discharge will also affect the life of the battery.

[0039] The above-mentioned problems are generally applicable in common battery pack usage scenarios. To solve these problems, the embodiments of the present application respectively propose a vehicle power management method, a vehicle power management device, an electronic device, a computer-readable storage medium, and a computer program product, which will be described in detail below.

[0040] See also Figure 2 , Figure 2 is a flow chart of a vehicle power management method shown in an exemplary embodiment of the present application. The method can be applied to Figure 1 The implementation environment shown is specifically executed by the server 120 in the implementation environment. It should be understood that the method can also be applied to other exemplary implementation environments and be specifically executed by devices in other implementation environments. This embodiment does not limit the implementation environment to which the method is applicable.

[0041] like Figure 2 As shown, in an exemplary embodiment, the vehicle power management method at least includes not performing step S210 to step S230, which are described in detail as follows:

[0042] Step S210, obtaining the power supply status of the vehicle at the current moment, where the power supply status includes the low-voltage power supply status of the power supply and the real-time load status of the power supply.

[0043] Specifically, in addition to the high-voltage power battery pack, an electric vehicle also has a 12V low-voltage battery to power the vehicle's low-voltage electrical equipment. The charging of this low-voltage battery is not completed through a generator, but through the on-board DCDC converter to convert the high-voltage DC power of the power battery pack into low-voltage DC power to charge the low-voltage battery and power the vehicle's low-voltage electrical equipment. It can be understood that as long as the vehicle starts normally, the low-voltage battery should be in a normal power supply state to ensure the normal operation of low-voltage electrical equipment such as the dashboard, windows, wipers, lights, and media.

[0044] For example, whether the low-voltage battery is in a normal power supply state is determined by observing whether the vehicle's low-voltage electrical equipment (such as the dashboard, windows, wipers, etc.) is working normally, and the real-time load status of the power supply is roughly understood through the relevant instructions on the vehicle's dashboard or central control screen, and then transmitted with the CAN signal.

[0045] Step S220: If the low voltage power supply state satisfies the preset load dumping condition, the functional load of the vehicle is determined based on the real-time load state.

[0046] Specifically, it is necessary to detect the low-voltage power supply status of the current vehicle. The low-voltage power supply status generally refers to the voltage and current of the low-voltage battery and the working status of the DCDC converter. If the low-voltage power supply status is lower than the preset safety threshold or fails, then the load dumping operation needs to be considered. The low-voltage battery voltage is lower than a certain threshold (for example, 11V or lower), the DCDC converter fails or the efficiency is lower than a certain standard, and an abnormal current or short circuit is detected in the low-voltage system. Before the load dumping operation, it is necessary to detect the real-time load status of the vehicle. The real-time load status can be obtained by monitoring the current, voltage, and power parameters of each low-voltage electrical device on the vehicle. This information can be obtained through the vehicle's ECU (electronic control unit) or a dedicated load monitoring device. Based on the real-time load status, the system needs to determine which functional loads can be temporarily shut down or reduced in power to reduce the burden on the low-voltage power supply system. Functional loads generally refer to various low-voltage electrical devices on the vehicle, such as lighting systems, air conditioners, and audio.

[0047] The power consumption and priority of the device: For example, safety-related devices (such as brake lights, turn signals) usually have a higher priority, while entertainment devices (such as audio, car TV) have a lower priority. The current working status of the device: For example, if the air conditioner is running at maximum power, it may be the main load source at the moment. The needs and preferences of the driver: In some cases, the driver may want to keep certain functions (such as navigation or emergency call systems) powered.

[0048] Step S230, determining a target load dumping strategy corresponding to the functional load of the vehicle based on the low voltage power supply state, and controlling the vehicle to execute the target load dumping strategy.

[0049] Specifically, a target load dumping strategy can be formulated based on the low-voltage power supply status and the priority ranking of functional loads. The strategy should clearly define which devices need to be turned off or reduced in power to reduce the burden on the low-voltage power supply system. For example, if the air conditioner is the main load source at present, you can consider reducing its power or temporarily turning it off; if some entertainment equipment (such as audio) is not necessary, you can also choose to turn them off.

[0050] Exemplarily, functional loads are prioritized based on factors such as the power consumption of the equipment, safety requirements, and driver needs. For example, safety-related equipment (such as brake lights and turn signals) usually have a higher priority. Relevant information about the load dumping operation is displayed or notified to the driver through the instrument panel, central control screen, or sound prompts. In some cases, the driver may be allowed to choose whether to execute a specific load dumping strategy. For example, if turning off the air conditioner will have a greater impact on the driver's comfort, the driver may choose to keep it running. Always put safety first when formulating and implementing load dumping strategies. Ensure that key safety equipment (such as brake lights and turn signals) are always in normal working condition.

[0051] In this embodiment, the functional load of the vehicle is determined according to the power supply state of the vehicle at the current moment, the low-voltage power supply state in the power supply state and the real-time load state, and when the low-voltage power supply state of the vehicle meets the preset load dumping condition, the target load dumping strategy corresponding to the functional load of the vehicle is determined based on the low-voltage power supply state, so as to achieve appropriate load dumping of the vehicle after the low-voltage power supply state of the power source is unbalanced, thereby avoiding deep discharge of the vehicle affecting the vehicle starting and the life of the vehicle battery pack.

[0052] Further, based on the above embodiments, please refer to Figure 3 In one of the exemplary embodiments provided in the present application, the low voltage power supply state includes a low voltage abnormal power supply state, and the power supply management method of the vehicle may further specifically include steps S310 to S330, which are described in detail as follows:

[0053] Step S310: If the gear state of the vehicle is not in the parking gear, the low-voltage power supply data of the power source is obtained.

[0054] Specifically, following the above embodiment, the low-voltage power supply system is mainly composed of a power battery pack, a DCDC module and a low-voltage battery. The DCDC module is the core of high-low voltage conversion, responsible for safely and effectively converting the high voltage electricity of the power battery into low voltage electricity, providing a stable low-voltage power supply for the vehicle. Therefore, the low-voltage power supply data of the power supply can be determined by obtaining the working status of the DCDC module in the low-voltage power-on system.

[0055] Exemplarily, the vehicle is equipped with sensors to detect the current position of the gear, such as whether it is in the parking gear (P gear), the drive gear (D gear), the reverse gear (R gear), etc. If the electronic control unit (ECU) detects that the vehicle's gear is not the parking gear (i.e., not the P gear), it will realize that the vehicle may be driving or preparing to drive. When the ECU determines that the vehicle is not in the parking gear, it may send a request to the vehicle's power management system to obtain the current low-voltage power supply data of the battery.

[0056] Step S320: If the low-voltage power supply data indicates that the DC power converter of the power supply is in an abnormal state, it is determined that the power supply is in a low-voltage abnormal power supply state.

[0057] Specifically, the DC power converter (DCDC) is an important component in the power supply system, which is responsible for converting the input power (which may be AC ​​or other forms of power) into a stable DC output. If it fails or is abnormal, it may affect the output voltage and stability of the power supply. A preset algorithm or rule is used to determine whether the DC power converter is abnormal. These algorithms or rules may be set based on parameters such as voltage range, current fluctuation, and temperature. Then if the low-voltage power supply data indicates that the DC power converter is in an abnormal state, the system will further determine that the power supply is in a low-voltage abnormal power supply state. The low-voltage abnormal power supply state may mean that the power supply cannot provide a stable voltage output, which may affect the normal operation of the vehicle and even cause equipment damage or system shutdown.

[0058] Exemplarily, a DC power converter (DCDC) is an important component in the power supply system. Therefore, if it is detected that the DC power converter (DCDC) is in a fault and the duration is longer than a preset duration, or the DCDC loses communication for longer than a preset duration, or the DCDC switch tube is disconnected for longer than a preset duration, the vehicle has a low-voltage fault, the DCDC is in working condition and the output voltage is less than 12V for longer than a preset time, or the DCDC is in working condition and the output power is less than 1.5KW for longer than a preset time, when the operating information of the DC power converter meets any of the above conditions, it can be determined that the power supply of the vehicle is in a low-voltage abnormal power supply state.

[0059] Step S330: If the power supply is in a low voltage abnormal power supply state, it is determined that the low voltage power supply state meets a preset load dumping condition.

[0060] It should be noted that load dump refers to the phenomenon that the power supply voltage changes sharply due to a sudden change in load at the moment when the power supply and load are disconnected. Low-voltage load dump refers to a measure taken in an electrical system to protect electrical equipment and loads from further damage when the power supply voltage drops abnormally due to some reason (such as excessive load, electrical equipment failure, etc.).

[0061] Specifically, the power supply is in an abnormal low-voltage power supply state, which means that the output voltage of the power supply is lower than the minimum voltage threshold required for the normal operation of the device or system, resulting in poor power supply stability, shortened life, and even possible damage to the equipment.

[0062] In this embodiment, the operating condition information of the DC power converter of the low-voltage power supply system of the vehicle is determined based on the gear information of the vehicle and the low-voltage power supply data of the vehicle to determine whether the low-voltage power supply system is supplying power normally, and then when the power supply is in a low-voltage abnormal power supply state, a low-voltage load dumping operation is performed on the power supply of the vehicle to avoid deterioration of power supply stability and shortened battery life.

[0063] Further, based on the above embodiment, in one of the exemplary embodiments provided in the present application, the specific implementation method of the above vehicle power management method may also include the following steps, which are described in detail as follows:

[0064] If the low-voltage power supply state of the power source is a low-voltage abnormal power supply state, a preset load dumping strategy of the vehicle is obtained, and the preset load dumping strategy is used as a target load dumping strategy corresponding to the functional load of the vehicle.

[0065] Specifically, if it is determined based on the operating condition information of the vehicle's power supply at the current moment that the vehicle is in a low-voltage abnormal power supply state, specifically, if the operating condition information of the DC power converter in the low-voltage power supply system of the power supply meets any of the abnormal operating condition information mentioned in the above embodiments, the vehicle's preset load dumping strategy can be directly obtained, and the preset load dumping vehicle can be used as the target load dumping strategy corresponding to the vehicle's functional load.

[0066] For example, if the low-voltage power supply system of the vehicle's power supply is in a low-voltage power supply abnormality state at the current moment, and the vehicle's real-time load request does not result in a functional overload, but due to the low-voltage power supply abnormality of the power supply, the vehicle can be controlled to execute a load dumping strategy to avoid damage to the battery life due to the voltage supply abnormality.

[0067] Optionally, in some feasible embodiments, if the power supply is in a low-voltage power supply abnormal state, the functional overload level of the power supply can be determined based on the real-time load status of the power supply, and since the power supply is in a low-voltage power supply abnormal state, the comparison threshold for the functional overload of the power supply is lower than the comparison threshold corresponding to the low-voltage power supply normal state of the power supply. That is to say, in the low-voltage power supply abnormal state of the power supply, the vehicle executes a load dumping strategy to reduce the low-voltage functional load, thereby avoiding the risks caused by the abnormality of the low-voltage power supply system.

[0068] In this embodiment, when it is determined that the low-voltage power supply state of the power supply is a low-voltage abnormal power supply state, the vehicle's preset load dumping strategy is obtained, so that when the low-voltage power supply is in the abnormal state, the vehicle executes the load dumping strategy to reduce the low-voltage functional load, thereby avoiding the risks caused by the abnormality of the low-voltage power supply system.

[0069] Further, based on the above embodiment, please refer to Figure 4In one of the exemplary embodiments provided in the present application, the specific implementation process of the above-mentioned vehicle power management method may also include step S410 and step S420, which are described in detail as follows:

[0070] Step S410: If the low-voltage power supply state of the power source is the low-voltage normal power supply state, the functional overload level of the vehicle is determined based on the real-time load state.

[0071] Specifically, following the above embodiment, if the current power supply state of the vehicle is a low-voltage normal power supply state, for example, the vehicle has no high-voltage fault, the vehicle communication is normal, the output voltage of the DC power converter is normal, the output power of the DC power converter is normal, the switch of the DC power converter is closed, etc., which meet the above working condition information, then it can be determined that the power supply state of the vehicle is a low-voltage normal power supply state. In this embodiment, when the power supply state of the vehicle is a low-voltage normal power supply state, the functional overload level of the vehicle can be determined according to the real-time load state of the power supply of the vehicle.

[0072] Exemplarily, the real-time load status of the vehicle is obtained. The real-time load status includes the power consumption of all electrical equipment and systems currently being used by the vehicle, as well as their working status. After obtaining the real-time load status, it is necessary to evaluate the capacity of the power system, that is, the maximum power that the power system can provide under the current power supply state. This usually requires consideration of factors such as the rated output power of the power system, the current operating temperature, and the degree of aging. Then, the real-time total load power is compared with the power system capacity: the real-time total load power is compared with the maximum power that the power system can provide, and then the functional overload level of the vehicle at the current moment is determined.

[0073] Step S420: If the functional overload level reaches a preset functional overload level threshold, a target load dumping strategy corresponding to the functional load of the vehicle is determined based on the functional overload level.

[0074] Specifically, if it is determined based on the real-time load of the vehicle that the overload level of the vehicle reaches a preset functional overload level threshold, the target load dumping strategy corresponding to the functional load of the vehicle can be determined based on the overload level of the vehicle, wherein the higher the overload level of the vehicle, the more load needs to be dumped, and conversely, the lower the overload level of the vehicle, the fewer load functions need to be dumped.

[0075] Exemplarily, the detected functional overload level is compared with a preset functional overload level threshold. The preset functional overload level threshold is pre-set based on factors such as vehicle design, safety requirements, and user experience. Based on the severity of the overload, the system will select the corresponding load dumping level. For example, different levels such as primary load dumping and secondary load dumping can be set, corresponding to different degrees of overload conditions, and then each load dumping level is associated with a specific load dumping strategy. These strategies may include shutting down some energy-consuming modules, reducing the power requirements of certain functional modules, adjusting power distribution, etc. The system will determine and execute the corresponding load dumping strategy based on the selected load dumping level.

[0076] In this embodiment, when the low-voltage power supply state of the power supply is the low-voltage normal power supply state, the functional overload level of the vehicle can be determined according to the real-time load state, and the corresponding load dumping operation will be performed according to the determined target load dumping strategy. These operations are intended to reduce the overall load of the vehicle to protect key components and systems and minimize the impact on the user's riding experience.

[0077] Further, based on the above embodiments, please refer to Figure 5 In one of the exemplary embodiments provided in the present application, the specific implementation process of the above-mentioned vehicle power management method may also include step S510 and step S520, which are described in detail as follows:

[0078] Step S510: If the low-voltage power supply state of the power source is the low-voltage normal power supply state, and the functional load of the vehicle is at the first preset overload level, then the target load dumping strategy corresponding to the functional load of the vehicle is determined to be a first-level load dumping strategy.

[0079] Specifically, confirm whether the current state is low-voltage normal power supply. The low-voltage normal power supply state means that the power supply voltage is lower than the rated voltage, but still within the acceptable normal range. To obtain real-time data of the functional load, it is necessary to compare it with the preset overload level to determine whether the functional load reaches the first preset overload level. The first preset overload level is pre-set based on factors such as vehicle design, safety requirements, and user experience. The corresponding load dumping operation will be performed in accordance with the requirements of the first-level load dumping strategy. The first-level load dumping strategy may include shutting down some non-critical equipment or functional modules to reduce the overall load of the vehicle. These operations are designed to protect critical components and while minimizing the impact on the user's riding experience.

[0080] In addition, after executing the first-level load dump strategy, it is necessary to continuously monitor the power supply status and functional load conditions. If the overload condition is alleviated, normal operation can continue; if the overload condition persists or worsens, a higher-level load dump strategy or other emergency measures may be required.

[0081] Step S520, obtaining the real-time functional load status of the power supply. If the real-time functional load status does not exceed the first preset overload level, the target load dumping strategy corresponding to the functional load of the vehicle is controlled to jump from the first-level load dumping strategy to the second-level load dumping strategy, wherein the load amount of the first preset overload level is greater than the second preset overload level.

[0082] Specifically, the real-time functional load status of the vehicle power supply is obtained. This usually includes the power consumption data of each energy-consuming device or module on the vehicle. If the real-time functional load status does not exceed the first preset overload level, it means that the current load situation is relatively safe or normal, and there is no need to take the radical load reduction measures in the first-level load dumping strategy. After confirming that the first-level load dumping strategy is not needed, the target load dumping strategy corresponding to the functional load of the vehicle is controlled to jump from the first level to the second level, where the second-level load dumping strategy may include milder load reduction measures, or may simply monitor the load status without active reduction. In addition, after jumping to the second-level load dumping strategy, the real-time functional load status of the vehicle should be continuously monitored. If the load status changes, it may be necessary to re-evaluate and adjust the load dumping strategy.

[0083] In this embodiment, by continuously monitoring the real-time functional load status of the vehicle, if the load status changes, it may be necessary to re-evaluate and adjust the load dumping strategy to ensure the flexibility of the load dumping strategy and improve the user experience.

[0084] Further, based on the above embodiment, in one of the exemplary embodiments provided in the present application, the specific implementation process of the above vehicle power management method may also include the following steps, which are described in detail as follows:

[0085] The real-time functional load status of the power supply is obtained. If the real-time functional load status exceeds a first preset overload level, the target load dumping strategy corresponding to the functional load of the vehicle is controlled to jump from the first-level load dumping strategy to the third-level load dumping strategy, wherein the third-level load dumping strategy has a different target load dumping function from the first-level load dumping strategy.

[0086] Specifically, the vehicle's or sensors will monitor and obtain the real-time functional load status of the power supply in real time. This usually includes the power consumption data of each energy-consuming device or module on the vehicle. Compare the functional load status obtained in real time with the first preset overload level. If the real-time functional load status exceeds the first preset overload level, then action is needed to reduce the load. Since the real-time functional load status exceeds the first preset overload level, and the first-level load dumping strategy may not be sufficient to effectively reduce the load to a safe range, it is necessary to jump to a more stringent third-level load dumping strategy. The third-level load dumping strategy is different from the first-level load dumping strategy in terms of the target load dumping function, and usually involves more functional deactivation or power reduction measures. For example, the target load dumping strategy corresponding to the functional load of the vehicle will be controlled to jump from level one to level three. During this process, it may be necessary to shut down or reduce the power of more non-critical devices or modules to quickly reduce the overall functional load of the vehicle.

[0087] In addition, stability and user experience need to be ensured throughout the process. Although the purpose of the load dumping strategy is to reduce the load to ensure safety, it is also necessary to try to avoid unnecessary interference or impact on vehicle operation and passengers. Therefore, when choosing which devices or modules to deactivate or reduce the power, it is necessary to comprehensively consider their impact on vehicle operation and passenger comfort.

[0088] Further, based on the above embodiment, please refer to Figure 6 In one of the exemplary embodiments provided in the present application, the specific implementation process of the above-mentioned vehicle power management method may also include step S610 and step S620, which are described in detail as follows:

[0089] Step S610, obtaining the load function of the vehicle and the power consumption corresponding to the load function;

[0090] Step S620, dividing the vehicle's primary load dumping strategy, secondary load dumping strategy, and tertiary load dumping strategy based on the vehicle's load function and the corresponding power consumption of the load.

[0091] Specifically, during the actual operation of the vehicle, it is necessary to determine all possible load functions on the vehicle, such as air conditioning, audio, lighting, in-vehicle information system, electric seats, etc. For each load function, it is necessary to obtain its power consumption during normal operation, which can usually be obtained through the vehicle's technical specifications or actual tests. Then, after determining the load functions and their power consumption, it is necessary to evaluate the importance of each load function to the vehicle operation and passenger experience. For example, air conditioning and lighting are critical to passenger comfort, while the in-vehicle information system is important but may not be necessary. Depending on the importance and power consumption of the load functions, they can be divided into different priorities. For example, load functions with high power consumption and significant impact on passenger experience can be given the highest priority, while load functions with low power consumption and little impact on passenger experience can be given the lowest priority.

[0092] For example, in some feasible embodiments, the load dumping mode action of the vehicle may be performed according to the following Table 1:

[0093]

[0094] Table 1

[0095] In this embodiment, while controlling the vehicle to execute the load dumping function, the user experience is taken into consideration, and different load dumping modes are divided according to the comfort and power consumption corresponding to different vehicle loads to minimize the impact of load dumping on passenger experience.

[0096] Figure 7 This is a brief flowchart of the power management of a vehicle in an exemplary application scenario. In the application scenario shown in 7, the power supply status of the vehicle at the current moment is obtained, and the power supply status includes the low-voltage power supply status of the power supply and the real-time load status of the power supply; it is determined whether the low-voltage power supply status of the power supply is a low-voltage normal working status. If the power supply status is a low-voltage normal power supply status, the functional overload level of the vehicle is determined based on the real-time load status; if the functional overload level reaches the preset functional overload level threshold, the target load dumping strategy corresponding to the functional load of the vehicle is determined based on the functional overload level. If the low-voltage power supply status of the power supply is a low-voltage abnormal power supply status, the preset load dumping strategy of the vehicle is obtained, and the preset load dumping strategy is used as the target load dumping strategy corresponding to the functional load of the vehicle, and the vehicle is controlled to execute the target load dumping strategy. For the detailed implementation process, please refer to the records in the aforementioned embodiments, which will not be repeated here.

[0097] Figure 8 is a block diagram of a vehicle power management device shown in an exemplary embodiment of the present application. The device can be applied to Figure 1The implementation environment shown in the figure is specifically configured in the server 120. The device can also be applied to other exemplary implementation environments and specifically configured in other devices. This embodiment does not limit the implementation environment to which the device is applied.

[0098] like Figure 8 As shown, the exemplary vehicle power management device includes: an acquisition module 810, used to acquire the power supply status of the vehicle at the current moment, the power supply status including the low-voltage power supply status and the real-time load status of the power supply; a determination module 820, used to determine the functional load of the vehicle based on the real-time load status if the low-voltage power supply status meets the preset load dumping condition; a control module 830, used to determine the target load dumping strategy corresponding to the functional load of the vehicle based on the low-voltage power supply status, and control the vehicle to execute the target load dumping strategy.

[0099] According to one aspect of an embodiment of the present application, the power management device of the above-mentioned vehicle also includes: a first acquisition module, which is used to obtain low-voltage power supply data of the power supply if the gear state of the vehicle is in a non-parking gear; a first determination module, which is used to determine that the power supply is in a low-voltage abnormal power supply state if the low-voltage power supply data indicates that the DC power converter of the power supply is in an abnormal state; and a second confirmation module, which is used to determine that the low-voltage power supply state meets a preset load dumping condition if the power supply is in a low-voltage abnormal power supply state.

[0100] According to one aspect of an embodiment of the present application, the power management device of the above-mentioned vehicle also includes: a second acquisition module, which is used to obtain the vehicle's preset load dumping strategy if the low-voltage power supply state of the power supply is a low-voltage abnormal power supply state, and use the preset load dumping strategy as the target load dumping strategy corresponding to the functional load of the vehicle.

[0101] According to one aspect of an embodiment of the present application, the power management device of the above-mentioned vehicle also includes: a third determination module, which is used to determine the functional overload level of the vehicle based on the real-time load status if the low-voltage power supply state of the power supply is a low-voltage normal power supply state; a fourth determination module, which is used to determine the target load dumping strategy corresponding to the functional load of the vehicle based on the functional overload level if the functional overload level reaches a preset functional overload level threshold.

[0102] According to one aspect of an embodiment of the present application, the power management device of the above-mentioned vehicle also includes: a fifth determination module, which is used to determine that the target load dumping strategy corresponding to the functional load of the vehicle is a first-level load dumping strategy if the low-voltage power supply state of the power supply is a low-voltage normal power supply state and the functional load of the vehicle is a first preset overload level; a first control module, which is used to obtain the real-time functional load state of the power supply, and if the real-time functional load state does not exceed the first preset overload level, control the target load dumping strategy corresponding to the functional load of the vehicle to jump from the first-level load dumping strategy to the second-level load dumping strategy, wherein the load amount of the first preset overload level is greater than the second preset overload level.

[0103] According to one aspect of an embodiment of the present application, the power management device of the above-mentioned vehicle also includes: a second control module, used to obtain the real-time functional load status of the power supply. If the real-time functional load status exceeds the first preset overload level, the target load dumping strategy corresponding to the functional load of the vehicle is controlled to jump from the first-level load dumping strategy to the third-level load dumping strategy, wherein the target load dumping function targeted by the third-level load dumping strategy is different from that targeted by the first-level load dumping strategy.

[0104] According to one aspect of an embodiment of the present application, the power management device of the above-mentioned vehicle also includes: a third acquisition module, used to obtain the load function of the vehicle and the power consumption corresponding to the load function; a division module, used to divide the vehicle into a first-level load dumping strategy, a second-level load dumping strategy and a third-level load dumping strategy based on the load function of the vehicle and the power consumption corresponding to the load.

[0105] It should be noted that the vehicle power management device provided in the above embodiment and the vehicle power management method provided in the above embodiment belong to the same concept, wherein the specific manner in which each module and unit performs operations has been described in detail in the method embodiment and will not be repeated here. In actual applications, the vehicle power management device provided in the above embodiment can distribute the above functions to different functional modules as needed, that is, divide the internal structure of the device into different functional modules to complete all or part of the functions described above, and this is not limited here.

[0106] An embodiment of the present application also provides an electronic device, comprising: one or more processors; a storage device for storing one or more programs, when the one or more programs are executed by one or more processors, the electronic device implements the vehicle power management method provided in the above-mentioned embodiments.

[0107] Fig. 9 The structure diagram of the computer system suitable for implementing the electronic device of the embodiment of the present application is shown. It should be noted that: Fig. 9The computer system 900 of the electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0108] like Fig. 9 As shown, the computer system 900 includes a central processing unit (CPU) 901, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 902 or the program loaded from the storage part 908 to the random access memory (RAM) 903, such as executing the method in the above embodiment. In the RAM 903, various programs and data required for system operation are also stored. The CPU 901, ROM 902 and RAM 903 are connected to each other through a bus 904. An input / output (I / O) interface 905 is also connected to the bus 904.

[0109] The following components are connected to the I / O interface 905: an input section 906 including a keyboard, a mouse, etc.; an output section 907 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 908 including a hard disk, etc.; and a communication section 909 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 909 performs communication processing via a network such as the Internet. A drive 910 is also connected to the I / O interface 905 as needed. A removable medium 911, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 910 as needed so that a computer program read therefrom is installed into the storage section 908 as needed.

[0110] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication section 909, and / or installed from a removable medium 911. When the computer program is executed by a central processing unit (CPU) 901, various functions defined in the system of the present application are executed.

[0111] It should be noted that the computer-readable medium shown in the embodiment of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, wherein a computer-readable computer program is carried. This propagated data signal can take a variety of forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device. A computer program contained on a computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0112] The flowchart and block diagram in the accompanying drawings illustrate the possible architecture, functions and operations of the system, method and computer program product according to various embodiments of the present application. Wherein, each box in the flowchart or block diagram can represent a module, a program segment, or a part of the code, and the above-mentioned module, program segment, or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0113] The units involved in the embodiments described in this application may be implemented by software or hardware, and the units described may also be set in a processor. The names of these units do not, in some cases, constitute limitations on the units themselves.

[0114] Another aspect of the present application further provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the vehicle power management method as described above is implemented. The computer-readable storage medium may be included in the electronic device described in the above embodiment, or may exist independently without being assembled into the electronic device.

[0115] Another aspect of the present application also provides a computer program product or a computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the vehicle power management method provided in each of the above embodiments.

[0116] The above content is only a preferred exemplary embodiment of the present application and is not intended to limit the implementation scheme of the present application. A person skilled in the art can easily make corresponding changes or modifications based on the main concept and spirit of the present application. Therefore, the scope of protection of the present application shall be based on the scope of protection required by the claims.

Claims

1. A vehicle power management method, characterized in that: include: Acquire the power supply status of the vehicle at the current moment, wherein the power supply status includes the low-voltage power supply status of the power supply and the real-time load status of the power supply; If the low-voltage power supply state is a low-voltage normal power supply state, determining a functional overload level of the vehicle based on the real-time load state; If the functional overload level reaches a preset functional overload level threshold, determining a target load strategy corresponding to the functional load of the vehicle based on the functional overload level; The method further comprises: If the low-voltage power supply state of the power source is a low-voltage normal power supply state, and the functional load of the vehicle is a first preset overload level, determining that the target load dumping strategy corresponding to the functional load of the vehicle is a first-level load dumping strategy; Obtaining a real-time functional load status of the power supply; If the real-time functional load state does not exceed the first preset overload level, the target load dumping strategy corresponding to the functional load of the vehicle is controlled to jump from the first-level load dumping strategy to the second-level load dumping strategy, wherein the load amount of the first preset overload level is greater than the second preset overload level corresponding to the second-level load dumping strategy; If the real-time functional load status exceeds the first preset overload level, the target load dumping strategy corresponding to the functional load of the vehicle is controlled to jump from the first-level load dumping strategy to the third-level load dumping strategy, wherein the third-level load dumping strategy has a different target load dumping function from the first-level load dumping strategy.

2. The method according to claim 1, characterized in that The low-voltage power supply state includes a low-voltage abnormal power supply state, and the method further includes: If the gear state of the vehicle is in a non-parking gear, obtaining low-voltage power supply data of the power source; If the low-voltage power supply data indicates that the DC power converter of the power supply is in an abnormal state, determining that the power supply is in a low-voltage abnormal power supply state; If the power supply is in a low-voltage abnormal power supply state, it is determined that the low-voltage power supply state meets a preset load dumping condition.

3. The method according to claim 2, characterized in that The method comprises: If the low-voltage power supply state of the power source is a low-voltage abnormal power supply state, a preset load dumping strategy of the vehicle is obtained, and the preset load dumping strategy is used as a target load dumping strategy corresponding to the functional load of the vehicle.

4. A power management device for a vehicle, characterized in that: The device comprises: An acquisition module, used to acquire the power supply status of the vehicle at the current moment, wherein the power supply status includes the low-voltage power supply status of the power supply and the real-time load status of the power supply; A determination module, configured to determine a functional overload level of the vehicle based on a real-time load state if the low-voltage power supply state satisfies the low-voltage normal power supply state; and to determine a target load strategy corresponding to the functional load of the vehicle based on the functional overload level if the functional overload level reaches a preset functional overload level threshold; a control module, configured to determine a target load strategy corresponding to the functional load of the vehicle based on the functional overload level if the functional overload level reaches a preset functional overload level threshold; The control module is further configured to, if the low-voltage power supply state of the power source is a low-voltage normal power supply state, and the functional load of the vehicle is a first preset overload level, determine that the target load dumping strategy corresponding to the functional load of the vehicle is a first-level load dumping strategy; Obtaining a real-time functional load status of the power supply; If the real-time functional load state does not exceed the first preset overload level, the target load dumping strategy corresponding to the functional load of the vehicle is controlled to jump from the first-level load dumping strategy to the second-level load dumping strategy, wherein the load amount of the first preset overload level is greater than the second preset overload level corresponding to the second-level load dumping strategy; If the real-time functional load status exceeds the first preset overload level, the target load dumping strategy corresponding to the functional load of the vehicle is controlled to jump from the first-level load dumping strategy to the third-level load dumping strategy, wherein the third-level load dumping strategy has a different target load dumping function from the first-level load dumping strategy.

5. An electronic device, characterized in that: include: one or more processors; A storage device for storing one or more programs, which, when executed by the one or more processors, enables the electronic device to implement the vehicle power management method as described in any one of claims 1 to 3.

6. A computer-readable storage medium, characterized in that: Computer-readable instructions are stored thereon, and when the computer-readable instructions are executed by a processor of a computer, the computer is caused to execute the vehicle power management method according to any one of claims 1 to 3.

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