Vehicle power consumption management method and vehicle

Abstract

The invention provides a vehicle power consumption management method and a vehicle, and relates to the technical field of vehicle control. The method comprises the steps that the remaining electric quantity and the maximum output power of a vehicle battery and the external discharging power of a vehicle are obtained; determining a current discharge scene according to the residual electric quantity, the maximum output power and the external discharge power of the vehicle; according to the current discharging scene, a graded power utilization management strategy is executed on the electric equipment in the vehicle according to the level of the electric equipment in the vehicle, and discharging management and control are conducted on an external load for supplying power to the outside of the vehicle; wherein the level of the electric equipment in the vehicle is divided based on the association degree of the equipment and vehicle driving. Therefore, in the external discharge process of the vehicle, the external discharge requirement can be met, the availability of the vehicle can be guaranteed, and the feed damage of the battery is avoided.

Description

Technical Field

[0001] This application relates to the field of vehicle control technology, and in particular to a vehicle power management method and a vehicle. Background Technology

[0002] With the increasing popularity of electric and hybrid vehicles, the vehicle's external power supply function has become an important additional feature. It allows the vehicle to act as a mobile power source to supply power to external electrical devices and is widely used in scenarios such as camping, emergency rescue, and outdoor operations.

[0003] In related technologies, to meet long-term power supply needs, no restrictions are placed on discharge behavior during external discharge, allowing the battery to continue discharging until it is completely depleted, or in hybrid vehicles, the engine to continue running until the fuel is exhausted. This indiscriminate discharge mode fails to guarantee battery safety and vehicle availability, resulting in a poor user experience. Summary of the Invention

[0004] This application provides a vehicle power management method and a vehicle to ensure battery safety and vehicle availability when the vehicle is discharging power to external sources.

[0005] In a first aspect, embodiments of this application provide a vehicle power management method, comprising: acquiring the remaining power and maximum output power of the vehicle battery, and the vehicle's external discharge power; determining the current discharge scenario based on the remaining power, the maximum output power, and the vehicle's external discharge power; and, based on the current discharge scenario, implementing a tiered power management strategy for the in-vehicle electrical devices according to their levels, and controlling the discharge of external loads supplied by the vehicle; wherein the levels of the in-vehicle electrical devices are classified based on the degree of correlation between the devices and vehicle operation.

[0006] Based on the above technical content, this application embodiment reflects the energy reserve status of the vehicle battery through the remaining battery power during the vehicle's external discharge process, reflects the upper limit of the vehicle battery's instantaneous power supply capacity under current conditions through the maximum output power, reflects the vehicle battery's discharge capacity through the combined effect of the remaining battery power and the maximum output power, and reflects the vehicle's external discharge demand through the vehicle's external discharge power. Therefore, based on the vehicle battery's discharge capacity and the vehicle's external discharge demand, the degree of external discharge burden of the vehicle battery can be measured, and various discharge scenarios can be divided accordingly. Furthermore, this application embodiment pre-classifies the in-vehicle electrical equipment based on the correlation between in-vehicle electrical equipment and vehicle operation, so as to carry out differentiated graded power management of in-vehicle electrical equipment in different discharge scenarios. As the battery power gradually decreases and the external discharge burden gradually increases, the power consumption of in-vehicle electrical equipment is gradually restricted in order of increasing correlation to meet the external power supply demand. In addition, this application embodiment also manages the power consumption of external loads of the vehicle, and restricts external power supply to maintain and ensure the availability of the core functions of vehicle operation and avoid battery depletion damage.

[0007] In one possible implementation, determining the current discharge scenario based on the remaining battery power, the maximum output power, and the vehicle's external discharge power includes: obtaining the ratio of the vehicle's external discharge power to the maximum output power; and determining the current discharge scenario based on the relationship between the remaining battery power and a preset battery power threshold, and the relationship between the ratio and a preset ratio threshold.

[0008] Here, the ratio of the external discharge power to the battery's maximum output power can be used to measure the battery's external discharge intensity in the current state, while the remaining power can be used to measure the battery's range in the current state. By using these two parameters, the discharge scenario can be collaboratively divided from two dimensions. Compared to dividing the scenario with a single parameter, this allows the power management of in-vehicle equipment and external loads to better match the actual state of the battery, thereby improving the scientific nature and precision of vehicle power management methods.

[0009] In one possible implementation, determining the current discharge scenario based on the relationship between the remaining power and a preset power threshold, and the relationship between the ratio and a preset ratio threshold, includes: if the remaining power is greater than a first power threshold and the ratio is less than a first ratio threshold, then the current discharge scenario is determined to be a first scenario; If the ratio is greater than the first ratio threshold and the remaining power is greater than the second power threshold, or if the ratio is less than or equal to the first ratio threshold and greater than the second ratio threshold and the remaining power is greater than the second power threshold and less than or equal to the first power threshold, or if the ratio is less than or equal to the second ratio threshold and the remaining power is greater than the third power threshold and less than or equal to the first power threshold, then the current discharge scenario is determined to be the second scenario. If the remaining power is greater than the third power threshold and less than or equal to the second power threshold, and the ratio is greater than the second ratio threshold, then the current discharge scenario is determined to be the third scenario. If the remaining power is less than the third power threshold, then the current discharge scenario is determined to be the fourth scenario; wherein, the first power threshold is greater than the second power threshold, the second power threshold is greater than the third power threshold, and the first ratio threshold is greater than the second ratio threshold.

[0010] The aforementioned technology categorizes discharge scenarios into four types based on the ratio of external discharge power to the battery's maximum output power and remaining battery capacity. The first scenario is when the battery has ample power and the external discharge burden is light; the second scenario is when the battery capacity is not yet critical, requiring a balance between internal power consumption and external power supply; the third scenario is when the battery capacity is critical, with a high external discharge burden; and the fourth scenario is when the battery capacity is low but still supplying power, requiring the maintenance of the vehicle's minimum mobility. This tiered discharge scenario system, based on the ratio of external discharge power to the battery's maximum output power and remaining battery capacity, enables a refined vehicle power management method that can meet external power supply needs while ensuring vehicle availability and battery safety.

[0011] In one possible implementation, before executing a tiered power management strategy for the in-vehicle electrical equipment according to its level based on the current discharge scenario, the method includes: Based on the degree of correlation between the equipment and vehicle operation, the in-vehicle electrical equipment is classified in descending order to obtain a first-level equipment list, a second-level equipment list, a third-level equipment list, and a fourth-level equipment list. According to different discharge scenarios, corresponding functional permissions are configured for the devices in the first-level device list, the second-level device list, the third-level device list, and the fourth-level device list.

[0012] Here, the in-vehicle electrical equipment is divided into four levels according to the correlation between the equipment and vehicle operation, and summarized into different levels of equipment lists. At the same time, functional permissions adapted to different discharge scenarios are pre-configured for different levels of equipment. As the battery power gradually decreases and the external discharge burden gradually increases, the power consumption of in-vehicle electrical equipment is gradually restricted in order of correlation from low to high, so as to meet the external power supply needs as much as possible.

[0013] In one possible implementation, the step of implementing a tiered power management strategy for the in-vehicle electrical equipment according to its level based on the current discharge scenario includes: Based on the functional permissions of the devices in the first-level device list, the second-level device list, the third-level device list, and the fourth-level device list for different discharge scenarios, determine the functional permissions of the devices in the first-level device list, the second-level device list, the third-level device list, and the fourth-level device list for the current discharge scenario. Based on the corresponding functional permissions, a tiered power management strategy is implemented for devices in the first-level device list, the second-level device list, the third-level device list, and the fourth-level device list.

[0014] The aforementioned technical content achieves hierarchical power management of in-vehicle electrical equipment by matching the real-time determined current discharge scenario with the preset hierarchical power management strategy.

[0015] In one possible implementation, the discharge scenario includes a first scenario, a second scenario, a third scenario, and a fourth scenario; the first scenario, the second scenario, the third scenario, and the fourth scenario progressively upgrade the power control level of the in-vehicle electrical equipment. The step of implementing a tiered power management strategy for devices in the first-level device list, the second-level device list, the third-level device list, and the fourth-level device list based on corresponding functional permissions includes: For the first scenario, maintain the normal use of devices in the first-level device list, the second-level device list, the third-level device list, and the fourth-level device list; For the second scenario, maintain the normal use of devices in the first-level device list and the second-level device list, control the devices in the third-level device list to work within a preset power range, and disable some devices in the fourth-level device list according to the pre-configured function permissions; For the third scenario, maintain the normal use of devices in the first-level device list, restrict some functions of devices in the second-level device list and the third-level device list according to the pre-configured function permissions, and disable devices in the fourth-level device list; For the fourth scenario, normal use of devices in the first-level device list is maintained, some functions of devices in the second-level device list are restricted according to pre-configured function permissions, and devices in the third-level device list and the fourth-level device list are disabled.

[0016] Here, a differentiated power management implementation method for four discharge scenarios is provided. From the first scenario to the fourth scenario, as the battery power gradually decreases and the external discharge burden gradually increases, the degree of power control over in-vehicle electrical equipment is gradually strengthened. Through this step-by-step control method, from low correlation to high correlation, and from restricting some functions of the equipment to disabling the equipment, the external power supply needs are met while ensuring the basic safety and mobility of the vehicle.

[0017] In one possible implementation, the discharge control of the external load supplying power to the vehicle includes: for the fourth scenario, monitoring the remaining power and obtaining the identification information of the external load supplying power to the vehicle; wherein the identification information is used to identify whether the external load is a critical load or a non-critical load. If the remaining power is less than or equal to the fourth power threshold, the power supply from the vehicle to the non-critical load is cut off; if the remaining power is less than or equal to the fifth power threshold, the power supply from the vehicle to both the non-critical load and the critical load is cut off; wherein the fifth power threshold is less than the fourth power threshold.

[0018] In the aforementioned technical content, for the fourth scenario, namely the situation where the battery power is low but the battery is still supplying power to the outside, an external discharge control method is adopted that prioritizes cutting off the power supply to non-critical loads and then cutting off the power supply to critical loads to ensure the availability of the vehicle's core driving functions.

[0019] In one possible implementation, after monitoring the remaining battery power and obtaining the identification information of the external load to which the vehicle supplies power, the method further includes: issuing an alarm message to indicate that the external power supply is about to be stopped; if a first instruction is received based on a preset emergency extension button, then according to the first instruction, controlling the vehicle to continue supplying power to the critical load.

[0020] In the aforementioned technical content, the current vehicle status is indicated through alarm information. Considering that in some specific scenarios, the demand for external power supply is higher than the demand for vehicle mobility, such as in medical emergency scenarios where ensuring power supply to medical emergency equipment is more urgent, this application embodiment provides a corresponding preset emergency extension button for critical loads to meet the need to maintain normal power supply to critical loads in the fourth scenario.

[0021] In one possible implementation, the method further includes: for the third scenario, obtaining the power consumption of the in-vehicle electrical equipment; based on the power consumption of the in-vehicle electrical equipment and the vehicle's external discharge power, obtaining the time required for the remaining power to decrease from the current power to a sixth power threshold; within a preset time before the remaining power decreases to the sixth power threshold, issuing an alarm message to indicate that external power supply will be stopped after the preset time.

[0022] The aforementioned technology provides early warnings about the current vehicle status through alarm information, enabling timely intervention to prevent damage to external loads caused by sudden power outages and improve the user experience.

[0023] In one possible implementation, after issuing an alarm message to indicate that power supply will be stopped after a preset duration, the method further includes: If a second instruction is received based on a preset touch button, the vehicle is controlled to stop supplying power to the external load according to the second instruction.

[0024] The aforementioned technology, through a preset touch button, allows users to actively choose to stop external power supply, thereby ensuring vehicle availability and battery safety and improving the user experience.

[0025] In one possible implementation, after configuring corresponding functional permissions for devices in the first-level device list, the second-level device list, the third-level device list, and the fourth-level device list according to different discharge scenarios, the method further includes: If a device forced shutdown command is received, and the device forced shutdown command carries the device identifier to be forcibly shut down, then based on the functional permissions corresponding to the devices in the first-level device list, the second-level device list, the third-level device list, and the fourth-level device list for different discharge scenarios, it is determined whether to forcibly shut down the device corresponding to the device identifier. If it is determined that the device corresponding to the device identifier is to be forcibly shut down, then based on the device that is forcibly shut down, the functional permissions corresponding to the devices in the first-level device list, the second-level device list, the third-level device list, and the fourth-level device list for different discharge scenarios are updated.

[0026] In the above implementation method, based on automatic power management, users can control specific devices through forced shutdown commands, and update the power management strategy based on user behavior to make it more in line with user habits.

[0027] Secondly, embodiments of this application provide a vehicle power management device, comprising: The acquisition module is used to acquire the remaining battery power and maximum output power of the vehicle battery, as well as the vehicle's external discharge power. The processing module is used to determine the current discharge scenario based on the remaining battery power, the maximum output power, and the vehicle's external discharge power. The processing module is further configured to implement a tiered power management strategy for the in-vehicle electrical equipment based on the current discharge scenario and the level of the in-vehicle electrical equipment, and to control the discharge of external loads that supply power to the outside of the vehicle; wherein, the level of the in-vehicle electrical equipment is classified based on the degree of correlation between the equipment and the vehicle's operation.

[0028] Thirdly, embodiments of this application provide a vehicle, including a memory and a processor. The memory stores a computer program that can run on the processor. When the processor executes the computer program, it implements the vehicle power management method as described in any of the first aspects.

[0029] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the vehicle power management method as described in any of the first aspects.

[0030] It is understood that the beneficial effects of the second to fourth aspects mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here.

[0031] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of an application scenario provided by an embodiment of this application; Figure 2 This is a schematic flowchart of a vehicle electricity management method provided in an embodiment of this application; Figure 3 This is a flowchart illustrating a vehicle electricity management method according to another embodiment of this application; Figure 4 This is a schematic diagram of the structure of a vehicle power management device provided in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of a vehicle provided in one embodiment of this application. Detailed Implementation

[0034] The present application will be described more clearly below with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the function of the present application, but do not limit the present application in any way. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application. These all fall within the protection scope of the present application.

[0035] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0036] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0037] In the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] References to "one embodiment" or "some embodiments" in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized. Furthermore, "a plurality" mentioned in the embodiments of this application should be interpreted as two or more.

[0039] Vehicle-to-electrical (TOO) functionality has become an important add-on, allowing vehicles to function as mobile power sources to supply power to external electrical devices. This is widely used in scenarios such as camping, emergency rescue, and outdoor work. However, some related technologies, to meet long-term power supply needs, do not restrict the discharge behavior during TOO, allowing the battery to continue discharging until it is completely depleted, or in hybrid vehicles, allowing the engine to continue running until the fuel is exhausted. This indiscriminate discharge mode fails to guarantee battery safety and vehicle availability, resulting in a poor user experience.

[0040] To protect the battery from damage due to power depletion and to prevent the vehicle from becoming inoperable due to insufficient energy, this application provides a vehicle power management method. In the embodiments of this application, the remaining battery power, the battery's maximum output power, and the vehicle's external discharge power are monitored, and different external discharge scenarios are defined based on these three parameters.

[0041] Among them, the remaining battery charge reflects the energy reserve status of the vehicle battery, the maximum output power reflects the upper limit of the instantaneous power supply capacity of the vehicle battery under the current conditions, and the remaining battery charge and the maximum output power can jointly reflect the vehicle's external discharge capacity; while the vehicle's external discharge power reflects the external discharge demand. By combining the vehicle's external discharge capacity and external discharge demand, the degree of external discharge burden of the vehicle battery can be measured.

[0042] Understandably, for the same external discharge demand, if the vehicle has sufficient remaining battery power and a high maximum output power, the external discharge burden is light; conversely, if the vehicle has limited remaining battery power and a low maximum output power, the external discharge burden is heavy. Therefore, different external discharge scenarios can be categorized based on varying levels of external discharge burden.

[0043] Based on different external discharge scenarios, the embodiments of this application pre-classify the in-vehicle electrical equipment according to the correlation between the in-vehicle electrical equipment and vehicle driving. As the battery power gradually decreases and the external discharge burden gradually increases, the power consumption of the in-vehicle electrical equipment is gradually restricted in order of increasing correlation to meet the external power supply demand.

[0044] In addition, this application embodiment also manages the power consumption of external loads of the vehicle. For example, when the power is severely insufficient, the power supply to the outside is restricted to maintain the power consumption of in-vehicle electrical equipment that is highly related to the vehicle's operation, so as to ensure the availability of the core functions of the vehicle and avoid damage from battery depletion.

[0045] Figure 1 The schematic diagram illustrates an application scenario provided according to an embodiment of this application. The devices involved in this application scenario include a vehicle power management device 101, a battery management system 102, an in-vehicle controller 103, and an external discharge controller 104 installed in a vehicle 100.

[0046] Among them, the vehicle power management device 101 obtains the remaining power and maximum output power of the vehicle battery through the battery management system 102; the vehicle power management device 101 obtains relevant information of the in-vehicle electrical equipment through the in-vehicle controller 103, and classifies the equipment according to the degree of correlation between the equipment and the vehicle's driving; the vehicle power management device 101 obtains the external discharge power of the vehicle to supply power to external loads through the external discharge controller 104.

[0047] The vehicle power management device 101 adopts the vehicle power management method provided in the embodiments of this application to determine the current discharge scenario based on the remaining power, the maximum output power, and the vehicle's external discharge power. Under the current discharge scenario, it implements a graded power management strategy for the in-vehicle electrical equipment according to the level of the in-vehicle electrical equipment, and controls the discharge of the external load that supplies power to the outside of the vehicle, so as to protect the battery from damage due to power depletion and prevent the vehicle from being unable to drive due to insufficient energy.

[0048] The following is combined with Figure 1 Application scenarios, refer to Figures 2-3 This application describes a vehicle electricity management method according to exemplary embodiments. It should be noted that the above application scenarios are shown only to facilitate understanding of the spirit and principles of this application, and the embodiments of this application are not limited in any way. Rather, the embodiments of this application can be applied to any applicable scenario.

[0049] refer to Figure 2 , Figure 2 This is a schematic flowchart illustrating a vehicle electricity management method according to an embodiment of this application. The method can be implemented using a computer program, such as application software. The executing entity of this method can be a vehicle electricity management device integrated with or installed with the relevant computer program. The executing entity can also be a medium storing the relevant computer program, such as a cloud drive or portable hard drive; alternatively, the executing entity can be implemented using a physical device integrated with or installed with the relevant computer program, such as a computer or server.

[0050] The following explanation uses a vehicle electricity management device as an example. Figure 2 As shown, the method in the embodiments of this application may include: S201. Obtain the remaining battery power and maximum output power of the vehicle battery, as well as the vehicle's external discharge power.

[0051] Here, the State of Charge (SOC) reflects the current energy reserve and driving range of the battery. The battery's SOC can be obtained from the vehicle's Battery Management System (BMS).

[0052] The maximum output power Pmax is the maximum safe instantaneous power supply capability allowed by the battery management system under the current battery condition, reflecting the battery's load limit. The maximum output power Pmax can be obtained from the vehicle's battery management system.

[0053] External discharge power Pout refers to the power supplied by the vehicle to an external load. The external discharge power Pout can be calculated by the external discharge controller by collecting the voltage and current in the external discharge circuit. For example, external power supply could be used to power camping lights during camping activities, or to power other vehicles with insufficient power.

[0054] Of the three parameters in this step, the remaining battery charge (SOC) and maximum output power (Pmax) can jointly reflect the current discharge capacity of the vehicle's battery. Correspondingly, the external discharge power (Pout) can reflect the vehicle's external discharge demand. Based on the vehicle's battery discharge capacity and its external discharge demand, the external discharge burden of the vehicle's battery can be measured, and various discharge scenarios can be classified accordingly.

[0055] S202. Determine the current discharge scenario based on the remaining battery power, maximum output power, and vehicle external discharge power.

[0056] Optionally, different discharge scenarios can be defined by preset value ranges for three parameters: remaining battery power, maximum output power, and external discharge power. For example, discharge scenarios can include scenarios where the vehicle has sufficient remaining battery power and a small external discharge load, or scenarios where the vehicle has limited remaining battery power and a large external discharge load.

[0057] Optionally, by monitoring the current values ​​of the above three parameters, the range of values ​​they satisfy can be determined to identify the matching discharge scenario, i.e., the current discharge scenario.

[0058] S203. Based on the current discharge scenario, implement a graded power management strategy for in-vehicle electrical equipment according to the level of the in-vehicle electrical equipment, and control the discharge of external loads that supply power to the outside of the vehicle; wherein, the level of in-vehicle electrical equipment is classified based on the degree of correlation between the equipment and the vehicle's operation.

[0059] In this step, the in-vehicle electrical equipment includes equipment used to ensure normal vehicle operation, as well as equipment used to meet the user's comfort and entertainment needs. For example, in-vehicle electrical equipment used to ensure normal vehicle operation may include, but is not limited to: brake assist system, power steering system, basic electronic control unit (ECU), instrument panel, headlights, windshield wipers, etc.; equipment used to meet the user's comfort and entertainment needs may include, but is not limited to: air conditioning, seat heating, in-vehicle refrigerator, audio system, etc.

[0060] Among the aforementioned in-vehicle electrical devices, some are highly relevant to vehicle operation, while others are less so. Devices highly relevant to vehicle operation are those that directly determine whether the vehicle can drive safely or even start and stop normally, such as the brake assist system, steering assist system, and basic ECU. Devices less relevant to vehicle operation are those that do not affect the core functions of vehicle operation, such as in-vehicle refrigerators and rear-seat entertainment displays.

[0061] Therefore, based on the correlation between the equipment and vehicle operation, in-vehicle electrical equipment can be divided into at least two levels. For example, a tiered power management strategy can be implemented by gradually restricting the power consumption of in-vehicle electrical equipment in order of increasing correlation as the battery charge gradually decreases and the external discharge burden gradually increases. For instance, devices with low correlation to vehicle operation can be disabled first to meet the external power supply demand.

[0062] In this step, external loads include both critical and non-critical loads. For example, during a medical emergency, the rescue equipment in use is a critical load, and a power outage would cause more severe losses than a vehicle power failure; during a camping trip, camping lights may be a non-critical load, and a power outage of them would not cause additional severe losses. For instance, managing the discharge of external loads supplying power to the vehicle can be manifested by prioritizing the disconnection of power to non-critical loads when the vehicle battery is low. This maintains the normal operation of critical loads while ensuring power supply to in-vehicle electrical equipment closely related to vehicle operation, guaranteeing the availability of core vehicle functions.

[0063] In this embodiment, during vehicle discharge, the remaining battery power reflects the energy reserve status of the vehicle battery, the maximum output power reflects the upper limit of the vehicle battery's instantaneous power supply capacity under current conditions, the remaining battery power and maximum output power together reflect the vehicle battery's discharge capacity, and the vehicle's external discharge power reflects the vehicle's external discharge demand. Based on the vehicle battery's discharge capacity and the vehicle's external discharge demand, the external discharge burden of the vehicle battery can be measured, thereby classifying various discharge scenarios.

[0064] In different discharge scenarios, on the one hand, this application embodiment pre-classifies the in-vehicle electrical devices based on their correlation with vehicle operation, enabling differentiated power management for these devices in different discharge scenarios. This allows for gradual restriction of power consumption by in-vehicle electrical devices in ascending order of correlation, as battery power gradually decreases and the external discharge burden increases, thus meeting external power supply demands. On the other hand, this application embodiment also manages the power consumption of external loads, limiting external power supply to maintain power consumption for in-vehicle electrical devices highly correlated with vehicle operation, ensuring the availability of core vehicle functions. Therefore, this application embodiment, by balancing in-vehicle power consumption and external discharge, can both meet external discharge demands and ensure vehicle availability, avoiding battery depletion damage.

[0065] This application embodiment considers that the external discharge power reflects the current instantaneous discharge demand, while the battery's maximum output power reflects the current instantaneous discharge capacity, and they are comparable. Therefore, based on the ratio of external discharge power to the battery's maximum output power, combined with the remaining charge reflecting the energy reserve state, four discharge scenarios are exemplaryly divided from two dimensions. The following uses four discharge scenarios as examples to illustrate the vehicle power management method provided in this application embodiment.

[0066] Figure 3 A flowchart illustrating a vehicle electricity management method according to another embodiment of this application is shown below. Figure 3 As shown, the method includes: S301. Obtain the remaining battery power and maximum output power of the vehicle battery, as well as the vehicle's external discharge power.

[0067] Combination Figure 1 The remaining battery charge (SOC) and maximum output power (Pmax) can be obtained from the vehicle's battery management system (BMS), while the external discharge power can be obtained from the external discharge controller.

[0068] In one possible implementation, the current discharge scenario is determined based on the remaining battery power, the maximum output power, and the vehicle's external discharge power, including steps S302 and S303.

[0069] S302. Obtain the ratio of the vehicle's external discharge power to its maximum output power; S303. Determine the current discharge scenario based on the relationship between the remaining power and the preset power threshold, and the relationship between the ratio and the preset ratio threshold.

[0070] Alternatively, the ratio of the external discharge power to the battery's maximum output power can more intuitively reflect the battery's external discharge capability under the current condition. The smaller the ratio, the stronger the vehicle battery's current external charging capability.

[0071] Optionally, discharge scenarios can be divided based on the remaining battery capacity using multiple preset battery capacity thresholds; and discharge scenarios can be divided based on the external discharge intensity using multiple preset ratio ranges. Using two dimensions to divide discharge scenarios, compared to using a single dimension, better reflects actual discharge conditions. This allows for more accurate matching of power management for in-vehicle devices and external loads to the actual battery status, improving the scientific rigor and precision of vehicle power management methods.

[0072] In one possible implementation, step S303 determines the current discharge scenario based on the relationship between the remaining battery power and a preset battery power threshold, and the relationship between the ratio and a preset ratio threshold, including: (1.1) If the remaining power is greater than the first power threshold and the ratio is less than the first ratio threshold, then the current discharge scenario is determined to be the first scenario; (1.2) If the ratio is greater than the first ratio threshold and the remaining power is greater than the second power threshold, or if the ratio is less than or equal to the first ratio threshold and greater than the second ratio threshold and the remaining power is greater than the second power threshold and less than or equal to the first power threshold, or if the ratio is less than or equal to the second ratio threshold and the remaining power is greater than the third power threshold and less than or equal to the first power threshold, then the current discharge scenario is determined to be the second scenario. (1.3) If the remaining power is greater than the third power threshold and less than or equal to the second power threshold, and the ratio is greater than the second ratio threshold, then the current discharge scenario is determined to be the third scenario; (1.4) If the remaining power is less than the third power threshold, the current discharge scenario is determined to be the fourth scenario; wherein the first power threshold is greater than the second power threshold, the second power threshold is greater than the third power threshold, and the first ratio threshold is greater than the second ratio threshold.

[0073] Here, the remaining battery power can be expressed as a percentage of the total battery capacity, for example, 80% remaining. Compared to expressing the remaining battery power as an absolute value of the battery power used, this method is suitable for vehicle models with different total battery capacities.

[0074] For example, the preset battery thresholds are as follows: the first battery threshold is 70%, the second battery threshold is 40%, and the third battery threshold is 20%; the preset ratio thresholds are as follows: the first ratio threshold is 40%, and the second ratio threshold is 30%. Then, the trigger condition for the first scenario is: remaining battery SOC > 70% and ratio Pout / Pmax < 40%. The trigger condition for the second scenario is: Pout / Pmax > 40% and SOC > 40%, or 30% < Pout / Pmax ≤ 40% and 40% < SOC ≤ 70%, or Pout / Pmax < 30% and 20% < SOC ≤ 70%. The trigger condition for the third scenario is 20% < SOC ≤ 40% and Pout / Pmax > 30%. The trigger condition for the fourth scenario is SOC ≤ 20%.

[0075] It can be seen that in the first scenario, the remaining power is sufficient and the external discharge burden is light; in the second scenario, when the external discharge burden is heavy, the remaining power is relatively large, and when the external discharge burden is light, the remaining power can be small. The remaining power and the external discharge burden are matched to present a discharge scenario where the power consumption is not tight; in the third scenario, the remaining power is tight and the external discharge burden is heavy; in the fourth scenario, the remaining power is even tighter than in the third scenario, and external discharge is still required.

[0076] For example, in the vehicle system, the first scenario can be defined as the free scenario, the second scenario as the comfort scenario, the third scenario as the alert scenario, and the fourth scenario as the self-protection scenario. These scenarios are used to inform the vehicle user of the current discharge scenario through voice broadcast or pop-up window of the human-machine interface. The vehicle user can quickly know the current vehicle discharge status based on the defined discharge scenario name.

[0077] This application does not limit the number of scene divisions or the threshold for scene division. Real vehicle tests can be conducted on different vehicle models to determine the number of scene divisions and the threshold for scene division.

[0078] In one possible implementation, before implementing a tiered power management strategy for in-vehicle electrical equipment according to its level based on the current discharge scenario, the vehicle power management method provided in this application embodiment includes: (2.1) Based on the correlation between the equipment and vehicle operation, the in-vehicle electrical equipment is classified in descending order to obtain the first-level equipment list, the second-level equipment list, the third-level equipment list and the fourth-level equipment list. (2.2) Configure corresponding functional permissions for devices in the first-level device list, second-level device list, third-level device list and fourth-level device list according to different discharge scenarios.

[0079] Here, in-vehicle electrical equipment is exemplarily divided into four levels based on its relevance to vehicle operation. The relevance of the equipment to vehicle operation can be considered from several dimensions, including safety criticality, driving necessity, comfort, and entertainment.

[0080] For example, the devices in the first-tier equipment list have the highest correlation with vehicle operation, directly determining whether the vehicle can drive safely and even start and stop normally. Examples include brake assist systems, power steering systems, and the basic ECU. The devices in the second-tier equipment list have the next highest correlation with vehicle operation; they do not directly determine driving safety, but their absence will severely impact driving feasibility. Examples include the dashboard, headlights, windshield wipers, and power windows. The devices in the third-tier equipment list have a moderate correlation with vehicle operation, not directly related to driving capabilities, but affecting driving comfort. Examples include air conditioning, seat heating devices, and steering wheel heating devices. The devices in the fourth-tier equipment list have a low correlation with vehicle operation, not affecting the core functions of vehicle operation, but affecting driving entertainment. Examples include rear-seat entertainment screens and in-car refrigerators.

[0081] Combining the first to fourth scenarios of the aforementioned examples, in step (2.2), functional permissions are configured for each level of device list to restrict the power consumption of devices at different levels in different scenarios. Specifically, as battery power gradually decreases and the external discharge burden gradually increases, a tiered control approach is adopted, progressing from low to high correlation, and from restricting some functions of devices to disabling them entirely. This gradually strengthens the control over the power consumption of in-vehicle electrical equipment. Thus, while ensuring the basic safety and mobility of the vehicle, the external power supply needs are met.

[0082] In one possible implementation, after configuring corresponding functional permissions for the devices in the first-level device list, the second-level device list, the third-level device list, and the fourth-level device list according to different discharge scenarios in step (2.2), the vehicle power management method provided in this application embodiment further includes: (2.3) If a device forced shutdown command is received, and the device forced shutdown command carries the device identifier to be forcibly shut down, then determine whether to forcibly shut down the device corresponding to the device identifier based on the functional permissions of the devices in the first-level device list, second-level device list, third-level device list and fourth-level device list of different discharge scenarios. (2.4) If the device corresponding to the forced shutdown device identifier is determined, then based on the forced shutdown device, update the functional permissions of the devices in the first-level device list, second-level device list, third-level device list and fourth-level device list for different discharge scenarios.

[0083] Here, based on the permissions pre-configured in step (2.2), the user may make further adjustments to the in-vehicle electrical equipment as needed. For example, in the second scenario, the user may choose to turn off the seat heating function that is configured to be on, or in the third scenario, the user may choose to turn on the air conditioning that is configured to be off.

[0084] If a user issues a forced shutdown command to an in-vehicle device during the application process, the system first determines whether the device's function permission is disabled or enabled in the current scenario based on the device identifier carried by the forced shutdown command. If the device is already configured to be disabled in the current scenario, there is no need to modify the function permission; if the device is already configured to be enabled in the current scenario, the device needs to be disabled and its function permission modified to be disabled so that the device can be controlled to be disabled the next time the same scenario is switched.

[0085] In addition, users may also issue forced activation commands to in-vehicle devices during the application process. By referring to the steps for issuing forced deactivation commands, the functional permissions of in-vehicle devices can be modified so that the device can be directly controlled to turn on when switching to the same scenario again in the future.

[0086] In one possible implementation, based on the current discharge scenario, a tiered power management strategy is implemented for the in-vehicle electrical equipment according to its level, including: S304. Based on the functional permissions of the devices in the first-level device list, second-level device list, third-level device list, and fourth-level device list for different discharge scenarios, determine the functional permissions of the devices in the first-level device list, second-level device list, third-level device list, and fourth-level device list for the current discharge scenario. S305. Based on the corresponding functional permissions, implement a hierarchical power management strategy for devices in the first-level device list, the second-level device list, the third-level device list, and the fourth-level device list.

[0087] Optionally, in this implementation, after determining the current discharge scenario based on the aforementioned step 302, the functional permissions of different levels of devices in the current discharge scenario are determined by combining the list of level devices and permission configurations pre-stored through steps (2.1) to (2.2), so as to implement the corresponding hierarchical power management strategy. Then, as the battery power gradually decreases and the external discharge burden gradually increases, the power consumption of in-vehicle electrical devices is gradually restricted in order of increasing correlation, so as to meet the external power supply demand.

[0088] Based on the first to fourth scenarios of the aforementioned examples, a tiered power management strategy is illustrated. In one possible implementation, the power control level for in-vehicle electrical equipment is progressively upgraded in the first, second, third, and fourth scenarios. Step S305, based on corresponding functional permissions, executes the tiered power management strategy on the devices in the first-level, second-level, third-level, and fourth-level device lists, including: (3.1) For the first scenario, maintain the normal use of devices in the first-level device list, the second-level device list, the third-level device list, and the fourth-level device list; (3.2) For the second scenario, maintain the normal use of devices in the first-level device list and the second-level device list, control the devices in the third-level device list to work within the preset power range, and disable some devices in the fourth-level device list according to the pre-configured function permissions; (3.3) For the third scenario, maintain the normal use of devices in the first-level device list, restrict some functions of devices in the second-level and third-level device lists according to the pre-configured function permissions, and disable devices in the fourth-level device list; (3.4) For the fourth scenario, maintain the normal use of devices in the first-level device list, restrict some functions of devices in the second-level device list according to the pre-configured function permissions, and disable devices in the third-level and fourth-level device lists.

[0089] In this implementation, the devices in the first-level device list that are most relevant to vehicle operation are not restricted in permissions and are in a fully available state in all four scenarios to ensure vehicle availability.

[0090] In the second scenario, fourth-level devices are selectively disabled, such as turning off the rear entertainment screen and limiting the in-vehicle refrigerator to keep-warm mode to reduce the power consumption of in-vehicle devices; and the functions of third-level devices are restricted, such as raising the air conditioning temperature by 2 to 3 degrees Celsius in the summer when the ambient temperature is high, lowering the air conditioning temperature by 2 to 3 degrees Celsius in the winter when the ambient temperature is low, lowering the seat heating temperature, and disabling the steering wheel heating.

[0091] In the third scenario, all fourth-level devices are disabled; and the functions of third-level devices are restricted more strictly than in the second scenario. For example, the air conditioning is restricted to only providing airflow, the compressor function is turned off, and the seat heating and steering wheel heating functions are turned off; and the functions of second-level devices are restricted, such as lowering the instrument panel screen backlight and turning off the power windows.

[0092] In the fourth scenario, all Level 3 and Level 4 devices are disabled; and the functionality of Level 2 devices is more strictly limited, retaining only safety-essential functions such as hazard lights.

[0093] From the first to the fourth scenario, the battery capacity gradually decreases, and the burden of external discharge gradually increases. Under these circumstances, by adopting a tiered control approach—from low to high correlation, and from restricting some functions of devices to disabling devices—the power consumption control of in-vehicle electrical equipment is gradually strengthened, ensuring the basic safety and mobility of the vehicle while meeting the external power supply needs.

[0094] In some embodiments, when switching discharge scenarios, the current vehicle discharge status can be indicated to the vehicle user via voice announcement or a pop-up window in the human-machine interface, so that the user can adjust the on / off status of the devices as needed. For example, in the first scenario, the message "Power supply status is good, all devices are available" can be displayed; in the second scenario, the message "To ensure external power supply, the power consumption of in-vehicle devices has been optimized" can be displayed, along with a list of optimized in-vehicle devices; in the third scenario, the message "Power is low, in-vehicle power consumption has been strictly limited" can be displayed; and in the fourth scenario, the remaining power supply and the message "External power supply will be stopped soon to protect the vehicle" can be displayed.

[0095] S306. Based on the current discharge scenario, discharge control is implemented for external loads supplying power to the vehicle.

[0096] Optionally, vehicle availability can be ensured by limiting the power consumption of in-vehicle equipment or by limiting external power supply. To meet the external discharge requirements, the power consumption of in-vehicle equipment can be prioritized for limiting in step S305. When limiting the power consumption of in-vehicle equipment cannot guarantee the minimum availability of the vehicle, such as in the fourth scenario where only the availability of first-level equipment and some functions of second-level equipment are retained, the discharge control of external loads can be selected through step S306 to ensure vehicle availability.

[0097] In one possible implementation, step S306 manages the discharge of external loads supplying power to the vehicle, including: (4.1) For the fourth scenario, monitor the remaining power and obtain the identification information of the external load that supplies power to the outside of the vehicle; wherein, the identification information is used to identify whether the external load is a critical load or a non-critical load; (4.2) If the remaining power is less than or equal to the fourth power threshold, then cut off the power supply from the vehicle to non-critical loads; (4.3) If the remaining power is less than or equal to the fifth power threshold, then cut off the power supply from the vehicle to the non-critical load and the critical load; wherein the fifth power threshold is less than the fourth power threshold.

[0098] Optionally, the device information of the external loads supported by the vehicle's external discharge can be pre-stored, and critical and non-critical loads can be identified. For example, camping lights for illumination can be identified as non-critical loads, while rescue or first aid equipment can be identified as critical loads. Furthermore, based on the pre-stored device information of the external loads, the external discharge controller can identify whether the external load currently connected to the vehicle is a critical or non-critical load.

[0099] Here, the fourth scenario represents the situation where the battery power is low but still supplies power to the outside world. In the fourth scenario, when the remaining power is less than or equal to the fourth power threshold, for example, when the remaining power SOC is ≤15%, the power supply to non-critical loads is cut off first. On the one hand, it is used to maintain the continued power supply to critical loads, and on the other hand, it is used to maintain the availability of the core functions of vehicle operation, such as the normal power consumption of the devices in the first-level device list that are most related to vehicle operation.

[0100] As the remaining power decreases further, when the remaining power is less than or equal to the fifth power threshold, such as when the remaining power SOC is ≤10%, power supply to all external loads, including non-critical and critical loads, is disconnected to maintain the availability of the vehicle's core operating functions.

[0101] Here, when setting the fifth battery threshold, the battery level can be referenced to the battery level required for the vehicle to travel a preset distance, for example, reserving the battery level required for the vehicle to travel 5 kilometers. Optionally, a fourth battery threshold can be set based on the fifth battery threshold.

[0102] In addition, considering the importance of critical loads in specific scenarios, after monitoring the remaining power and obtaining the identification information of the external loads supplying power to the outside of the vehicle in step (4.1), the vehicle power management method provided in this application embodiment further includes: (4.4) Issue an alarm message to indicate that power supply to external parties will be cut off soon; (4.5) If a first instruction is received based on the preset emergency extension button, the vehicle shall be controlled to continue supplying power to the critical load according to the first instruction.

[0103] Here, warning messages can be issued to vehicle users via voice broadcast or pop-up windows in the human-machine interface to alert them that the vehicle is about to lose power and that external power supply will be cut off. For critical loads, an emergency extension button is pre-set, allowing vehicle users to proactively control the vehicle to continue supplying power to critical loads as needed after receiving the warning. For example, in a medical emergency scenario, ensuring the power supply to medical emergency equipment is more urgent than the vehicle's availability requirements. Therefore, vehicle users can issue a first command based on the pre-set emergency extension button to ensure the vehicle continues to supply power to the medical emergency equipment in the fourth scenario.

[0104] In one possible implementation, for the third scenario, the vehicle electricity management method provided in this application embodiment further includes: (5.1) For the third scenario, obtain the power consumption of the in-vehicle electrical equipment; (5.2) Based on the power consumption of the in-vehicle electrical equipment and the vehicle's external discharge power, obtain the time required for the remaining power to decrease from the current power level to the sixth power threshold. (5.3) Within a preset time period before the remaining power drops to the sixth power threshold, an alarm message will be issued to indicate that power supply will be stopped after the preset time period.

[0105] Here, the in-vehicle controller can collect the voltage and current of each in-vehicle electrical device, and then calculate the power consumption of the in-vehicle electrical device; the vehicle's external discharge power can be obtained from the external discharge controller.

[0106] The sixth power threshold is set at 15%, and the preset duration is set at 10 minutes. Based on the power consumption of the in-vehicle electrical equipment and the vehicle's external discharge power in the current scenario, the remaining power is estimated to decrease from the current power to 15%, and an alarm is issued 10 minutes in advance to avoid damage to external loads caused by sudden power outages, which is conducive to improving the user experience.

[0107] In one possible implementation, after issuing an alarm message in step (5.3) to indicate that power supply will be stopped after a preset time, the vehicle power management method provided in this application embodiment further includes: (5.4) If a second instruction is received based on a preset touch button, the vehicle is controlled to stop supplying power to the external load according to the second instruction.

[0108] Here, a preset touch button allows users to actively choose to immediately stop external power supply to ensure vehicle availability and battery safety.

[0109] In this embodiment, during the vehicle's external discharge process, the discharge scenario is divided from two dimensions based on the ratio of the external discharge power to the battery's maximum output power, combined with the remaining battery capacity. By balancing in-vehicle power consumption and external discharge, both external discharge needs are met while ensuring vehicle availability and preventing battery depletion damage. Furthermore, this embodiment allows users to actively adjust device on / off states and adjust permission functions based on user preferences to improve user experience.

[0110] Specifically, for in-vehicle electrical equipment, this application embodiment pre-classifies in-vehicle electrical equipment based on the correlation between the equipment and vehicle operation. As battery power gradually decreases and the external discharge burden gradually increases, a tiered control method is adopted, from low correlation to high correlation, and from restricting some functions of the equipment to disabling the equipment. This gradually strengthens the power control of in-vehicle electrical equipment, while ensuring the basic safety and mobility of the vehicle, and meeting the external power supply needs.

[0111] For external loads, this application embodiment adopts an external discharge control method that prioritizes cutting off power supply to non-critical loads and then cutting off power supply to critical loads. By limiting external power supply, the power supply of in-vehicle electrical equipment that is highly related to vehicle operation is maintained, ensuring the availability of core vehicle operation functions and avoiding battery depletion damage.

[0112] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0113] Figure 4 This is a schematic diagram of the structure of a vehicle power management device provided in one embodiment of this application. Figure 4 As shown, the vehicle power management device 400 provided in this embodiment may include: an acquisition module 401 and a processing module 402.

[0114] The acquisition module 401 is used to acquire the remaining power and maximum output power of the vehicle battery, as well as the vehicle's external discharge power. Processing module 402 is used to determine the current discharge scenario based on the remaining battery power, maximum output power, and vehicle external discharge power; The processing module 402 is also used to implement a graded power management strategy for the in-vehicle electrical equipment according to the current discharge scenario and the level of the in-vehicle electrical equipment, and to control the discharge of external loads that supply power to the outside of the vehicle; wherein, the level of the in-vehicle electrical equipment is classified based on the degree of correlation between the equipment and the vehicle's operation.

[0115] In one possible implementation, the processing module 402 is specifically used to obtain the ratio of the vehicle's external discharge power to its maximum output power; the processing module 402 is also specifically used to determine the current discharge scenario based on the relationship between the remaining power and a preset power threshold, and the relationship between the ratio and a preset ratio threshold.

[0116] In one possible implementation, the processing module 402 is specifically used to determine the current discharge scenario as the first scenario if the remaining power is greater than the first power threshold and the ratio is less than the first ratio threshold. The processing module 402 is specifically used to determine the current discharge scenario as the second scenario if the ratio is greater than the first ratio threshold and the remaining power is greater than the second power threshold, or if the ratio is less than or equal to the first ratio threshold and greater than the second ratio threshold and the remaining power is greater than the second power threshold and less than or equal to the first power threshold, or if the ratio is less than or equal to the second ratio threshold and the remaining power is greater than the third power threshold and less than or equal to the first power threshold. The processing module 402 is specifically used to determine the current discharge scenario as the third scenario if the remaining power is greater than the third power threshold and less than or equal to the second power threshold, and the ratio is greater than the second ratio threshold. The processing module 402 is specifically used to determine the current discharge scenario as the fourth scenario if the remaining power is less than the third power threshold; wherein the first power threshold is greater than the second power threshold, the second power threshold is greater than the third power threshold, and the first ratio threshold is greater than the second ratio threshold.

[0117] In one possible implementation, before the processing module 402 executes a graded power management strategy for the in-vehicle electrical equipment according to the level of the in-vehicle electrical equipment based on the current discharge scenario, it is specifically used to classify the in-vehicle electrical equipment according to the correlation between the equipment and the vehicle driving, in descending order, to obtain a first-level equipment list, a second-level equipment list, a third-level equipment list, and a fourth-level equipment list. The processing module 402 is further configured to assign corresponding functional permissions to devices in the first-level device list, second-level device list, third-level device list, and fourth-level device list according to different discharge scenarios.

[0118] In one possible implementation, the processing module 402 is specifically used to determine the corresponding functional permissions of the devices in the first-level device list, second-level device list, third-level device list, and fourth-level device list under the current discharge scenario, based on the corresponding functional permissions of the devices in the first-level device list, second-level device list, third-level device list, and fourth-level device list under different discharge scenarios. The processing module 402 is further used to execute hierarchical power management strategies for devices in the first-level device list, the second-level device list, the third-level device list, and the fourth-level device list based on the corresponding functional permissions.

[0119] In one possible implementation, the discharge scenarios include a first scenario, a second scenario, a third scenario, and a fourth scenario; the first scenario, the second scenario, the third scenario, and the fourth scenario progressively upgrade the power control level of the in-vehicle electrical equipment. The processing module 402 is specifically used to maintain the normal use of devices in the first-level device list, the second-level device list, the third-level device list, and the fourth-level device list for the first scenario. The processing module 402 is also specifically used for the second scenario to maintain the normal use of devices in the first-level device list and the second-level device list, control devices in the third-level device list to work within a preset power range, and disable some devices in the fourth-level device list according to the pre-configured function permissions. The processing module 402 is also specifically used for the third scenario to maintain the normal use of devices in the first-level device list, restrict some functions of devices in the second-level and third-level device lists according to the pre-configured function permissions, and disable devices in the fourth-level device list. The processing module 402 is also specifically used for the fourth scenario to maintain the normal use of devices in the first-level device list, restrict some functions of devices in the second-level device list according to pre-configured function permissions, and disable devices in the third-level and fourth-level device lists.

[0120] In one possible implementation, the processing module 402 is specifically used to monitor the remaining power and obtain the identification information of the external load that supplies power to the outside of the vehicle for the fourth scenario; wherein the identification information is used to identify whether the external load is a critical load or a non-critical load. The processing module 402 is further configured to cut off the power supply from the vehicle to non-critical loads if the remaining power is less than or equal to a fourth power threshold; and to cut off the power supply from the vehicle to both non-critical and critical loads if the remaining power is less than or equal to a fifth power threshold; wherein the fifth power threshold is less than the fourth power threshold.

[0121] In one possible implementation, the processing module 402 is also used to obtain the power consumption of the in-vehicle electrical equipment for the third scenario. The processing module 402 is also used to determine the time required for the remaining power to decrease from the current power to the sixth power threshold based on the power consumption of the in-vehicle electrical equipment and the vehicle's external discharge power. The processing module 402 is also used to issue an alarm message within a preset time period before the remaining power decreases to the sixth power threshold, so as to indicate that the power supply will be stopped after the preset time period.

[0122] In one possible implementation, after configuring corresponding functional permissions for devices in the first-level device list, second-level device list, third-level device list, and fourth-level device list according to different discharge scenarios, the processing module 402 is further configured to, if a device forced shutdown command is received, and the device forced shutdown command carries the device identifier to be forcibly shut down, determine whether to forcibly shut down the device corresponding to the device identifier based on the functional permissions corresponding to the devices in the first-level device list, second-level device list, third-level device list, and fourth-level device list for different discharge scenarios. The processing module 402 is further configured to, if it is determined that the device corresponding to the device identifier for forced shutdown is to be shut down, update the corresponding functional permissions of the devices in the first-level device list, second-level device list, third-level device list, and fourth-level device list for different discharge scenarios based on the device for forced shutdown.

[0123] It should be noted that the information interaction and execution process between the above-mentioned devices / units are based on the same concept as the method embodiments of this application. For details on their specific functions and technical effects, please refer to the method embodiments section, and they will not be repeated here.

[0124] Figure 5 This is a schematic diagram of the structure of a vehicle provided in one embodiment of this application. Figure 5 As shown, the vehicle 500 in this embodiment includes a processor 510 and a memory 520, wherein the memory 520 stores a computer program 521 that can run on the processor 510. When the processor 510 executes the computer program 521, it implements the steps in any of the above method embodiments, for example... Figure 2 Steps S201 to S203 are shown. Alternatively, when processor 510 executes computer program 521, it implements the functions of each module / unit in the above-described device embodiments, for example... Figure 4 The functions of the acquisition module 401 and the processing module 402 are shown.

[0125] For example, computer program 521 may be divided into one or more modules / units, one or more of which are stored in memory 520 and executed by processor 510 to complete this application. 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 computer program 521 in vehicle 500.

[0126] Those skilled in the art will understand that Figure 5 This is merely an example of a vehicle and does not constitute a limitation on the vehicle. It may include more or fewer components than shown, or combinations of certain components, or different components, such as input / output devices, network access devices, buses, etc.

[0127] The processor 510 can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0128] The memory 520 can be an internal storage unit of the vehicle, such as a hard drive or memory, or an external storage device, such as a plug-in hard drive, smart media card (SMC), secure digital (SD) card, flash card, etc. The memory 520 can also include both internal and external storage devices. The memory 520 is used to store computer programs and other programs and data required by the vehicle. The memory 520 can also be used to temporarily store data that has been output or will be output.

[0129] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0130] An embodiment of this application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described vehicle power management method.

[0131] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0132] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0133] In the embodiments provided in this application, it should be understood that the disclosed devices / vehicles and methods can be implemented in other ways. For example, the device / vehicle embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0134] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0135] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0136] If the integrated module / unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium, etc.

[0137] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A method for managing vehicle electricity consumption, characterized in that, include: Obtain the remaining battery power and maximum output power of the vehicle, as well as the vehicle's external discharge power; The current discharge scenario is determined based on the remaining battery power, the maximum output power, and the vehicle's external discharge power. Based on the current discharge scenario, a tiered power management strategy is implemented for the in-vehicle electrical equipment according to its level, and discharge control is exercised over the external loads supplying power to the outside of the vehicle; wherein, the level of the in-vehicle electrical equipment is determined based on the degree of correlation between the equipment and the vehicle's operation.

2. The vehicle electricity management method according to claim 1, characterized in that, The step of determining the current discharge scenario based on the remaining battery power, the maximum output power, and the vehicle's external discharge power includes: Obtain the ratio of the vehicle's external discharge power to its maximum output power; The current discharge scenario is determined based on the relationship between the remaining power and the preset power threshold, and the relationship between the ratio and the preset ratio threshold.

3. The vehicle electricity management method according to claim 2, characterized in that, Determining the current discharge scenario based on the relationship between the remaining battery power and a preset battery power threshold, and the relationship between the ratio and a preset ratio threshold, includes: If the remaining power is greater than the first power threshold and the ratio is less than the first ratio threshold, then the current discharge scenario is determined to be the first scenario. If the ratio is greater than the first ratio threshold and the remaining power is greater than the second power threshold, or if the ratio is less than or equal to the first ratio threshold and greater than the second ratio threshold and the remaining power is greater than the second power threshold and less than or equal to the first power threshold, or if the ratio is less than or equal to the second ratio threshold and the remaining power is greater than the third power threshold and less than or equal to the first power threshold, then the current discharge scenario is determined to be the second scenario. If the remaining power is greater than the third power threshold and less than or equal to the second power threshold, and the ratio is greater than the second ratio threshold, then the current discharge scenario is determined to be the third scenario. If the remaining power is less than the third power threshold, then the current discharge scenario is determined to be the fourth scenario; wherein, the first power threshold is greater than the second power threshold, the second power threshold is greater than the third power threshold, and the first ratio threshold is greater than the second ratio threshold.

4. The vehicle electricity management method according to any one of claims 1 to 3, characterized in that, Before implementing a tiered power management strategy for the in-vehicle electrical equipment according to its level based on the current discharge scenario, the method includes: Based on the degree of correlation between the equipment and vehicle operation, the in-vehicle electrical equipment is classified in descending order to obtain a first-level equipment list, a second-level equipment list, a third-level equipment list, and a fourth-level equipment list. According to different discharge scenarios, corresponding functional permissions are configured for the devices in the first-level device list, the second-level device list, the third-level device list, and the fourth-level device list.

5. The vehicle electricity management method according to claim 4, characterized in that, The step of implementing a tiered power management strategy for the in-vehicle electrical equipment according to the current discharge scenario and the level of the in-vehicle electrical equipment includes: Based on the functional permissions of the devices in the first-level device list, the second-level device list, the third-level device list, and the fourth-level device list for different discharge scenarios, determine the functional permissions of the devices in the first-level device list, the second-level device list, the third-level device list, and the fourth-level device list for the current discharge scenario. Based on the corresponding functional permissions, a tiered power management strategy is implemented for devices in the first-level device list, the second-level device list, the third-level device list, and the fourth-level device list.

6. The vehicle electricity management method according to claim 5, characterized in that, The discharge scenarios include a first scenario, a second scenario, a third scenario, and a fourth scenario; the first scenario, the second scenario, the third scenario, and the fourth scenario progressively upgrade the power control level of in-vehicle electrical equipment. The step of implementing a tiered power management strategy for devices in the first-level device list, the second-level device list, the third-level device list, and the fourth-level device list based on corresponding functional permissions includes: For the first scenario, maintain the normal use of devices in the first-level device list, the second-level device list, the third-level device list, and the fourth-level device list; For the second scenario, maintain the normal use of devices in the first-level device list and the second-level device list, control the devices in the third-level device list to work within a preset power range, and disable some devices in the fourth-level device list according to the pre-configured function permissions; For the third scenario, maintain the normal use of devices in the first-level device list, restrict some functions of devices in the second-level device list and the third-level device list according to the pre-configured function permissions, and disable devices in the fourth-level device list; For the fourth scenario, normal use of devices in the first-level device list is maintained, some functions of devices in the second-level device list are restricted according to pre-configured function permissions, and devices in the third-level device list and the fourth-level device list are disabled.

7. The vehicle electricity management method according to claim 6, characterized in that, The discharge control of external loads supplying power to the vehicle includes: In the fourth scenario, the remaining battery power is monitored, and the identification information of the external load that supplies power to the outside of the vehicle is obtained; wherein, the identification information is used to identify whether the external load is a critical load or a non-critical load; If the remaining power is less than or equal to the fourth power threshold, then the vehicle's power supply to the non-critical load is cut off; If the remaining power is less than or equal to the fifth power threshold, then the vehicle's power supply to the non-critical load and the critical load is cut off; wherein the fifth power threshold is less than the fourth power threshold.

8. The vehicle electricity management method according to claim 6, characterized in that, The method further includes: For the third scenario, the power consumption of the in-vehicle electrical equipment is obtained; Based on the power consumption of the in-vehicle electrical equipment and the vehicle's external discharge power, the time required for the remaining power to decrease from the current power to the sixth power threshold is obtained. Within a preset time period before the remaining power decreases to the sixth power threshold, an alarm message will be issued to indicate that power supply will be stopped after the preset time period.

9. The vehicle electricity management method according to claim 4, characterized in that, After configuring corresponding functional permissions for devices in the first-level device list, the second-level device list, the third-level device list, and the fourth-level device list according to different discharge scenarios, the method further includes: If a device forced shutdown command is received, and the device forced shutdown command carries the device identifier to be forcibly shut down, then based on the functional permissions corresponding to the devices in the first-level device list, the second-level device list, the third-level device list, and the fourth-level device list for different discharge scenarios, it is determined whether to forcibly shut down the device corresponding to the device identifier. If it is determined that the device corresponding to the device identifier is to be forcibly shut down, then based on the device that is forcibly shut down, the functional permissions corresponding to the devices in the first-level device list, the second-level device list, the third-level device list, and the fourth-level device list for different discharge scenarios are updated.

10. A vehicle, characterized in that, The device includes a memory and a processor, wherein the memory stores a computer program that can run on the processor, and the processor executes the computer program to implement the vehicle power management method as described in any one of claims 1 to 9.

Images