Electric quantity management method, device and equipment

Abstract

The invention discloses an electric quantity management method, device and equipment, and relates to the technical field of vehicles, the method is executed by a vehicle-mounted charger of a target vehicle, and the method comprises the steps that under the condition that the target vehicle is connected to a charging pile, a reservation charging instruction is acquired, and the reservation charging instruction is used for indicating the starting moment of charging of the target vehicle; sending a wake-up signal to a charging network based on the starting moment, wherein the charging network comprises a vehicle battery management module and a charging pile; under the condition that the charging network is in the wake-up state, the target vehicle is controlled to be charged based on the electric energy provided by the charging pile; receiving battery electric quantity data; and in response to the condition that the battery electric quantity data meets the preset charging completion requirement, sending a dormancy signal to the charging network, the dormancy signal being used for controlling the charging network to enter a dormancy state and stopping charging the target vehicle. The vehicle electric quantity management efficiency and the energy utilization rate can be improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of vehicle technology, and in particular to a power management method, device, and equipment. Background Art

[0002] A pure electric vehicle is a vehicle that uses an onboard rechargeable battery as its power source and is driven by an electric motor. The onboard charger is one of the key components of a pure electric vehicle, and is mainly responsible for converting external input AC power into DC power suitable for charging the vehicle's power battery. When the vehicle is charging, the onboard charger first establishes a communication connection with the charging pile, and dynamically adjusts the charging parameters, such as voltage and current, based on the battery status information fed back by the battery management system, to achieve a safe and efficient charging process.

[0003] In related technologies, after a pure electric vehicle completes the charging operation, it needs to wait for a period of time to monitor whether there are new vehicle control instructions, and then decide whether to put the vehicle into a dormant state. During this period, the battery management system, vehicle controller, various sensors, and communication modules must all remain active to ensure that possible instructions can be captured in a timely manner.

[0004] However, these devices continue to consume power during the waiting process, which will cause unnecessary energy consumption when no new instructions are received, reducing the overall energy utilization of the vehicle and making the vehicle's power management inefficient. Summary of the invention

[0005] The embodiments of the present application provide a power management method, device, and apparatus, which can improve the management efficiency and energy utilization rate of vehicle power. The technical solution is as follows:

[0006] In one aspect, a power management method is provided, which is performed by an on-board charger of a target vehicle, and the method comprises:

[0007] When the target vehicle is connected to the charging pile, obtaining a scheduled charging instruction, wherein the scheduled charging instruction is used to indicate a start time of charging the target vehicle;

[0008] Sending a wake-up signal to a charging network based on the starting time, the charging network including a vehicle battery management module and the charging pile, the wake-up signal being used to wake up the charging network to charge the target vehicle;

[0009] When the charging network is in an awake state, controlling the target vehicle to be charged based on the electric energy provided by the charging pile;

[0010] Receiving battery power data, the battery power data is data collected in real time by the vehicle battery management module during the charging process of the target vehicle;

[0011] In response to the battery power data meeting a preset charging completion requirement, a sleep signal is sent to the charging network, where the sleep signal is used to control the charging network to enter a sleep state and stop charging the target vehicle.

[0012] In another aspect, a power management device is provided, the device comprising:

[0013] An acquisition module, used for acquiring a scheduled charging instruction when the target vehicle is connected to a charging pile, wherein the scheduled charging instruction is used for indicating a start time of charging of the target vehicle;

[0014] A sending module, configured to send a wake-up signal to a charging network based on the starting time, wherein the charging network includes a vehicle battery management module and the charging pile, and the wake-up signal is used to wake up the charging network to charge the target vehicle;

[0015] A control module, when the charging network is in an awake state, controls the target vehicle to be charged based on the electric energy provided by the charging pile;

[0016] A receiving module, used for receiving battery power data, wherein the battery power data is data collected in real time by the vehicle battery management module during the charging process of the target vehicle;

[0017] The sending module is further used to send a sleep signal to the charging network in response to the battery power data meeting a preset charging completion requirement, wherein the sleep signal is used to control the charging network to enter a sleep state and stop charging the target vehicle.

[0018] In an optional embodiment, the sending module is further configured to send the wake-up signal to the charging network if the reserved charging instruction is not obtained within a preset time period.

[0019] In an optional embodiment, the sending module is also used to determine the first time for sending the wake-up signal based on the starting time when the scheduled charging instruction is obtained, and the first time is a time before the starting time; send a wake-up signal to the charging network at the first time, so that the target vehicle starts charging at the starting time indicated by the scheduled charging instruction.

[0020] In an optional embodiment, the scheduled charging instruction includes a charging duration and a target battery power;

[0021] The sending module is also used to determine the total power data of the target vehicle when charging based on the current battery power of the target vehicle and the target battery power; determine the first charging power required for charging the target vehicle based on the charging time and the total power data; obtain the output power data of the charging pile, and the output power data is used to describe the ability of the charging pile to output power; in response to the matching between the first charging power and the output power data meeting the preset charging time requirement, send the wake-up signal to the charging network based on the start time.

[0022] In an optional embodiment, the sending module is also used to update the start time in response to the matching situation between the first charging power and the output power data not meeting the preset charging time requirement to obtain an updated start time; and send the wake-up signal to the charging network based on the updated start time.

[0023] In an optional embodiment, the sending module is also used to determine the actual charging time required for the target vehicle based on the total power data and the output power data; and to obtain the updated start time based on the actual charging time required and the charging end time in the scheduled charging instruction.

[0024] In an optional embodiment, the reservation charging instruction includes travel information, and the travel information is used to indicate the driving path of the target vehicle in a future time period;

[0025] The sending module is further used to determine the mileage data of the target vehicle in the future time period based on the travel information, the mileage data being used to indicate the distance traveled by the target vehicle when traveling based on the driving path; to obtain first electric energy data of the target vehicle based on the mileage data, the first electric energy data being used to indicate the total amount of electricity required when traveling based on the driving path; to determine the target battery power of the vehicle battery of the target vehicle based on the first electric energy data; and in response to the battery power data reaching the target battery power, to determine that the battery power data meets the preset charging completion requirement, to send the sleep signal to the charging network.

[0026] In an optional embodiment, the reservation charging instruction includes travel information, and the travel information is used to indicate the driving path of the target vehicle in a future time period;

[0027] The sending module is further used to obtain charging station data based on the travel information, wherein the charging station data includes at least one charging station within a preset distance range of the driving path; determine the target charging station from the at least one charging station based on the current position of the target vehicle, wherein the target charging station meets at least one of the following conditions: the distance between the first position of the target charging station and the current position meets a preset distance requirement, and the path of the target vehicle when traveling from the current position to the first position meets a preset overlap requirement with the driving path; determine a first driving distance required for the target vehicle to travel from the current position to the first position based on the driving path; obtain second electric energy data of the target vehicle based on the first driving distance, wherein the second electric energy data is used to indicate the total electric energy required for the target vehicle to travel from the current position to the first position; determine a target battery power of the vehicle battery of the target vehicle based on the second electric energy data; in response to the battery power data reaching the target battery power, determine that the battery power data meets the preset charging completion requirement, and send the sleep signal to the charging network.

[0028] On the other hand, a computer device is provided, which includes a processor and a memory, wherein the memory stores at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by the processor to implement a power management method as described in any of the above-mentioned embodiments of the present application.

[0029] On the other hand, a computer-readable storage medium is provided, in which at least one instruction, at least one program, a code set or an instruction set is stored. The at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by a processor to implement a power management method as described in any of the above-mentioned embodiments of the present application.

[0030] On the other hand, a computer program product or a computer program is provided, the computer program product or the computer program includes computer instructions, the computer instructions are 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 any of the power management methods described in the above embodiments.

[0031] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0032] When the target vehicle is connected to the charging pile, first determine whether there is a scheduled charging instruction, rather than immediately executing the charging operation. If there is a scheduled charging instruction, it can meet the user's demand for charging the vehicle within a specified time period, which improves the convenience of power management. The on-board charger sends a wake-up signal or a sleep signal to the charging network to achieve an accurate network wake-up and sleep mechanism, simplifying the power management process and improving power management efficiency. Real-time collection of changes in battery power data can promptly control the vehicle to enter sleep mode, reducing unnecessary energy consumption and improving energy utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 is a schematic diagram of a power management system provided by an exemplary embodiment of the present application;

[0035] Figure 2 is a flow chart of a power management method provided by an exemplary embodiment of the present application;

[0036] Figure 3 is a structural block diagram of a power management device provided by an exemplary embodiment of the present application;

[0037] Figure 4 It is a structural block diagram of a computer device provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0038] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0039] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0040] It should be noted that the information and data involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant laws, regulations and standards of relevant countries and regions.

[0041] First, a brief introduction is given to the terms involved in the embodiments of this application:

[0042] Battery Management System / Module (BMS): An electronic system used to monitor, control and manage battery packs, mainly used in battery application scenarios in electric vehicles, energy storage systems, power tools, etc. In pure electric vehicles, the battery management system is mainly used to detect the voltage, current, temperature and other parameters of the battery pack in real time, and determine the battery charge state / remaining power and battery health status based on the detected parameters to ensure the battery charging and discharging process is safe and efficient.

[0043] A pure electric vehicle is a vehicle that is powered entirely by rechargeable batteries (such as lithium-ion batteries, nickel-metal hydride batteries, etc.) and driven by an electric motor. The on-board charger is an important part of the charging system of a pure electric vehicle and is usually installed inside the vehicle.

[0044] The main function of the on-board charger is to convert the external input AC power into DC power suitable for charging the vehicle battery system, and to control and manage the charging process to ensure safe, efficient and stable charging. The on-board charger has multiple safety protection functions such as overvoltage protection, overcurrent protection, overheating protection, leakage protection, etc. to prevent safety problems during the charging process.

[0045] In addition, the on-board charger can also communicate with the vehicle's battery management system / module and the external charging pile to negotiate charging parameters and feedback on the charging status. When the vehicle is connected to the charging pile, the on-board charger first establishes a communication connection with the charging pile. Based on the various types of information about the battery status fed back by the battery management system, such as the current battery power, battery voltage value, battery temperature status, etc., the relevant parameters involved in charging, such as charging voltage, charging current, etc., are dynamically adjusted and changed to ensure that the vehicle battery can be replenished in good condition.

[0046] In the related art, after the pure electric vehicle completes the charging operation, it needs to wait for a period of time before entering the dormant state. During the waiting stage, the vehicle will continue to monitor whether there are new vehicle control instructions, and determine whether to prompt the vehicle to enter the dormant state based on the monitoring results. If there are new vehicle control instructions, it will not enter the dormant state temporarily. If there are no new vehicle control instructions, it will enter the dormant state.

[0047] In order to monitor vehicle control instructions in a timely and accurate manner, during this stage, the battery management system, vehicle controller, vehicle sensors and communication modules all need to remain in operation to ensure that the vehicle can respond quickly to various instructions.

[0048] Therefore, these vehicle components / systems continue to consume electricity. In some cases where no new instructions are received during the waiting phase, unnecessary energy loss will occur, making the overall energy utilization efficiency of the vehicle lower and affecting the power management efficiency of the vehicle.

[0049] Next, the power management system involved in the embodiment of the present application is described. For illustration, please refer to Figure 1 The system includes an on-board charger 110 of the target vehicle, a vehicle battery management module 120 of the target vehicle, an on-board terminal 130 of the target vehicle, and a charging pile 140.

[0050] The user can set a scheduled charging instruction for the target vehicle in advance, and the scheduled charging instruction will be stored in the vehicle terminal 130. When the target vehicle is successfully connected to the charging pile 140, the vehicle charger 110 will first obtain the scheduled charging instruction from the vehicle terminal 130 to determine whether to charge the target vehicle directly.

[0051] If a scheduled charging instruction is obtained, the time to start charging is determined based on the charging start time indicated in the scheduled charging instruction.

[0052] Among them, based on the starting time, a wake-up signal is sent to the vehicle battery management module 120 and the charging pile 140 to wake up the charging network of the target vehicle to start charging the target vehicle. At this time, the charging pile 140 supplies power to the target vehicle, the on-board charger 110 converts the AC power in the charging pile 140 into DC power, and the vehicle battery management module 120 monitors the battery power data of the vehicle battery of the target vehicle in real time, and feeds back the battery power data to the on-board charger 110 to prompt the on-board charger 110 whether to end charging and control the target vehicle to enter a dormant state.

[0053] When the battery power data meets the preset charging completion requirements, the on-board charger 110 controls the charging network to stop charging the target vehicle and sends a sleep signal to the charging network (ie, the vehicle battery management module 120 and the charging pile 140), and the sleep signal is used to control the charging network to enter a sleep state.

[0054] Exemplarily, the battery power data includes the remaining power of the vehicle battery, and the preset charging completion requirement means that the remaining power of the vehicle battery reaches a preset power threshold.

[0055] If the reserved charging instruction is not obtained, the charging network of the target vehicle is directly awakened to charge the target vehicle. During the charging process, the battery power data is still monitored in real time as in the above steps, and the target vehicle is controlled to enter a dormant state in a timely manner.

[0056] In some embodiments, the above-mentioned step of obtaining the reserved charging instruction can be obtained by the on-board charger 110 from the on-board terminal 130, or by the on-board charger 110 from a server. The server corresponds to the vehicle management platform / application of the target vehicle. The vehicle management platform / application can remotely control the target vehicle or obtain data related to the target vehicle and store the data in the server.

[0057] It is worth noting that the above-mentioned servers can be independent physical servers, or they can be server clusters or distributed systems composed of multiple physical servers. They can also be cloud servers that provide basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, content delivery networks (CDN), as well as big data and artificial intelligence platforms.

[0058] In some embodiments, the above server can also be implemented as a node in a blockchain system.

[0059] Combined with the above-mentioned noun introduction and application scenarios, the power management method provided by this application is explained. The method can be executed by an on-board charger, or by an on-board terminal, or by an on-board charger and an on-board terminal together. Take the method executed by the on-board charger of the target vehicle as an example. Figure 2 As shown, Figure 2 FIG. 1 is a flow chart of a power management method provided by an exemplary embodiment of the present application. The method includes the following steps.

[0060] Step 210: When the target vehicle is connected to the charging pile, a charging reservation instruction is obtained.

[0061] The target vehicle is a pure electric vehicle, which is connected to a charging pile via a charging cable, and can obtain electric energy through the charging cable to charge the vehicle battery. A communication connection is also established between the charging pile and the target vehicle.

[0062] The charging pile includes a charging gun, and the target vehicle includes a charging interface. The charging gun is inserted into the charging interface to connect the target vehicle to the charging pile.

[0063] The scheduled charging instruction is used to indicate the starting time of charging of the target vehicle. The user can make a reservation for charging for the target vehicle by performing a reservation operation on the target vehicle's own central control system. The on-board terminal generates a scheduled charging instruction based on the received reservation operation. When the user leaves the target vehicle, the target vehicle can also be automatically charged based on the scheduled charging instruction.

[0064] In some embodiments, the target vehicle corresponds to a vehicle management platform / application, which may be a platform / application developed by the seller of the target vehicle. The user may install the vehicle management application in the mobile terminal or log in to the vehicle management platform, register the relevant information of the target vehicle, perform online reservation operations through the vehicle management platform / application, and synchronize the reservation operations to the vehicle terminal of the target vehicle through the wireless communication network to generate a reservation charging instruction.

[0065] The reservation operation is used to set at least one of the following information:

[0066] (1) Charging time information of the target vehicle.

[0067] 1.1 For example, the charging time information includes a charging time period of the target vehicle. The charging time period is a time period divided based on the start time and the end time of charging. The target vehicle is allowed to charge only within the charging time period.

[0068] Based on the difference between the current battery power and the specified target battery power, the total power required for charging is calculated. The charging power of the charging pile when charging the target vehicle is determined based on the duration of the charging time period and the total power required for charging. For example, if the duration of the charging time period is 30 minutes and the total power required for charging is 15kWh, the charging power is 15kWh / 0.5h=30kW.

[0069] Alternatively, in some embodiments, the charging time period of the target vehicle may be set periodically, for example, the charging time period may be set in a seven-day cycle: the charging time period from Monday to Thursday is 21:00 to 23:00, and the charging time period from Friday to Sunday is 22:00 to 24:00.

[0070] 1.2 For example, the charging time information only includes the starting time of charging. Before the starting time, even if the target vehicle is connected to the charging pile, charging will not be started. Charging will only be started at the starting time.

[0071] 1.3 For example, the charging time information only includes the end time of charging. Charging can be started at any time before the end time, and charging automatically stops at the end time.

[0072] When charging is scheduled based on the termination time, the total power required for the specified charging is calculated based on the power difference between the current battery power and the specified target battery power. The charging time required to charge the target vehicle is calculated based on the average charging power when the charging pile charges other vehicles in the historical time period, and the starting time for charging is determined based on the charging time and the termination time. The historical time period refers to the time period when the charging pile last charged the vehicle.

[0073] For example, the total amount of electricity required for charging is 15kWh, the average charging power of the charging pile in the historical time period is 30kW, and the end time is 09:00:00. Then the required charging time is 15kWh / 30kW=0.5h, and the start time is 08:30:00.

[0074] (2) The target battery capacity of the target vehicle. The target battery capacity refers to the target battery capacity that the vehicle battery is expected to reach through charging. For example, a target battery capacity of 90% means that the battery capacity is expected to reach 90% of its maximum battery capacity through charging. The total power required for charging the vehicle can be determined by combining the target battery capacity and the current battery capacity of the target vehicle. For example, if the maximum capacity of the vehicle battery is 60 kilowatt-hours (kWh), when the target battery capacity is set to 90%, the amount of power required to be charged is 60×90%=54kWh. The current capacity of the vehicle is 30%, that is, there is 60×30%=18kWh of power in the battery, so the total power required for charging is 54-18=36kWh.

[0075] (3) The maximum charging power of the target vehicle refers to the maximum value of the output power of the charging pile when the target vehicle is charging. The actual output power of the charging pile when the target vehicle is charging cannot exceed the maximum charging power of the target vehicle. When the vehicle power management module detects that the actual output power of the charging pile exceeds the maximum charging power of the target vehicle, it will reduce the actual output power by adjusting the charging voltage and current limiting the charging light to adjust it to within the maximum charging power range.

[0076] That is, when the target vehicle is connected to the charging pile, the on-board charger will not immediately wake up the vehicle's charging network to start charging the target vehicle, but will first actively send a request to the on-board terminal to obtain a reservation charging instruction to determine whether there is a reservation charging instruction.

[0077] If a scheduled charging instruction is obtained, whether to start charging is determined according to the charging start time indicated in the scheduled charging instruction.

[0078] Step 220 : Send a wake-up signal to the charging network based on the start time.

[0079] Among them, the charging network for pure electric vehicles refers to the network system used to provide electric energy supply for pure electric vehicles, which is mainly composed of external charging facilities and systems / components related to power management inside the vehicle.

[0080] For example, in this embodiment, the charging network includes a vehicle battery management module and a charging pile. The wake-up signal is used to wake up the charging network to charge the target vehicle. After receiving the wake-up signal, each component of the charging network starts to prepare the charging environment.

[0081] The wake-up signal is used to switch the charging network from the dormant state to the awakened state. In the awakened state, the charging network can provide power output normally, perform charging control and communication interaction between various charging modules, and the charging network and various modules of the target vehicle are in working state, with high power consumption. In the dormant state, the charging network does not output power, and the charging process of the target vehicle cannot be realized. The charging network and various modules of the target vehicle are in low power or off state, and only basic monitoring functions are maintained, with reduced power consumption.

[0082] Optionally, when the reserved charging instruction is obtained, the first time for sending the wake-up signal is determined based on the start time, and the first time is a time before the start time.

[0083] A wake-up signal is sent to the charging network at a first moment, so that the target vehicle starts charging at the start time indicated by the scheduled charging instruction.

[0084] That is, by sending the wake-up signal at the first moment, time can be reserved in advance to prepare the charging environment, so that the target vehicle can start charging on time at the scheduled charging time.

[0085] Exemplarily, the following preparation steps are included before starting charging: the vehicle charger sends a wake-up signal, the charging network receives the wake-up signal, and the charging parameter confirmation step. Charging parameters refer to the relevant parameters when the charging pile supplies power to the target vehicle, including the optimal charging power.

[0086] The time required for each of the above steps is obtained and summed up to obtain a first duration, and the moment that is the first duration away from the starting moment is determined as the first moment.

[0087] For example, the first duration is 5 seconds and the start time is 09:10:30; then the first time is 09:10:25.

[0088] Optionally, the scheduled charging instruction includes a charging duration and a target battery charge, wherein the charging duration refers to the total duration of the charging time period, and the target battery charge refers to the battery charge target that the vehicle battery is expected to reach through charging.

[0089] For example, the starting time of the charging time period is 09:00:00, and the ending time of the charging time period is 10:00:00, then the charging time is 60 minutes.

[0090] The total electric energy data of the target vehicle when being charged is determined based on the current battery power of the target vehicle and the target battery power.

[0091] The total electric energy data refers to the total electric energy required to increase the vehicle battery charge of the target vehicle from the current battery charge to the target battery charge.

[0092] For example, the maximum capacity of the vehicle battery is 60 kilowatt-hours (kWh), the target battery charge is 90%, the current battery charge is 10%, and the total power data = (90% - 10%) * 60 = 48 kilowatt-hours (kWh).

[0093] A first charging power required for charging the target vehicle is determined based on the charging time and the total electric energy data.

[0094] The first charging power ≥ total power data / charging time. In order to ensure that the vehicle battery of the target vehicle reaches the target battery power within the charging time period specified in the scheduled charging instruction, the value of the first charging power required when charging the target vehicle is greater than the result of dividing the total power data by the charging time period. Otherwise, the charging time period will be exceeded.

[0095] The output power data of the charging pile is obtained. The output power data is used to describe the ability of the charging pile to output electric energy, that is, the output power data includes the output power of the charging pile.

[0096] Optionally, in response to a matching condition between the first charging power and the output power data meeting a preset charging time requirement, a wake-up signal is sent to the charging network based on the start time.

[0097] If the output power data is greater than or equal to the first charging power required by the target vehicle, the match between the first charging power and the output power data meets the preset charging time requirements. Within the charging time period specified in the scheduled charging instruction, the charging pile can provide the total power required to increase the vehicle battery from the current battery power to the target battery power.

[0098] In some embodiments, the output power data includes the rated output power of the charging pile, and whether the current charging time meets the preset charging time requirements can also be determined in the following manner.

[0099] Among them, output power refers to the amount of electric energy that the charging pile can deliver to the vehicle battery of a pure electric vehicle per unit time. The rated output power is the power value that the charging pile can continuously and stably output under ideal working conditions in accordance with design requirements. It is the standard power specified during the design and manufacture of the charging pile, usually expressed in kilowatts (kW).

[0100] For example, a charging station with a rated output of 30kW can theoretically deliver 30 kilowatt-hours (kWh) of electricity to the vehicle battery per hour.

[0101] Among them, the output power data also includes the corresponding relationship between the actual output power of the charging pile and the rated output power. The corresponding relationship is used to indicate the current battery power of the vehicle battery under different data, and the ratio between the actual output power and the rated output power. The actual output power refers to the actual capacity of the charging pile when charging the vehicle battery. Usually, the actual output power does not exceed the rated output power, and the actual output power will be affected by the current battery power of the vehicle battery. When the current battery power of the vehicle battery is negatively correlated with the actual output power, that is, the higher the current battery power, the smaller the actual output power.

[0102] For example, the corresponding relationship is shown in the following formula 1:

[0103] Formula 1: P1=P0*a*e -b*SOC +c

[0104] Among them, P1 refers to the actual output power, P0 refers to the rated output power, a, b, c are constants, e -b*SOC It represents the exponential relationship between the rated output power and the actual output power. SOC is the current charge level of the battery (State of Charge / remaining power).

[0105] The above formula describes how the rated output power changes as the current charge of the battery changes.

[0106] As shown in the following formula 2, a definite integral operation is performed on P1 based on the charging time t (the range is t1 to t2, t1 refers to the starting time of the charging time period, and t2 refers to the ending time of the charging time period). The obtained calculation result E represents the total amount of electricity that the charging pile can output during the charging time period.

[0107] Formula 2:

[0108] If the total power E is greater than or equal to the total power data required for charging, it means that the preset charging time requirements are met, and the charging pile can meet the charging time period specified in the scheduled charging instruction to increase the current battery power of the vehicle battery to the target battery power.

[0109] Optionally, in response to the matching between the first charging power and the output power data not meeting the preset charging time requirement, the start time is updated to obtain an updated start time, and a wake-up signal is sent to the charging network based on the updated start time.

[0110] Exemplarily, the actual charging time required for the target vehicle is determined based on the total power data and the output power data, and the updated start time is obtained based on the actual charging time required and the charging end time in the scheduled charging instruction.

[0111] For example, the actual charging time (T) = total electric energy data / output power data, and the time that is T away from the charging end time and before the charging end time is determined as the updated start time.

[0112] Alternatively, based on Formula 2 above, the value of the total power E is set to a value corresponding to the total power data or a value greater than the total power data, the starting time t1 is set as a variable, and the rest remain unchanged, and the total power E is calculated to make it consistent with the updated starting time when the current battery power of the vehicle battery is increased to the target battery power.

[0113] In some embodiments, if the vehicle terminal does not receive the scheduled charging instruction, that is, the user does not perform a scheduled charging operation on the target vehicle, there is no need to wait and the target vehicle can be charged directly based on the power provided by the charging pile.

[0114] Optionally, when no reserved charging instruction is obtained within a preset time period, a wake-up signal is sent to the charging network.

[0115] In some embodiments, step 220 may be performed by the vehicle terminal, which directly wakes up the charging network based on the locally stored scheduled charging instruction. In this process, the vehicle terminal determines the first time when the charging network needs to be woken up based on the start time indicated in the scheduled charging instruction, wakes up the charging network in advance, and ensures that charging starts on time. Alternatively, the vehicle terminal controls the vehicle charger to continuously send a wake-up signal to the charging network to wake up the charging network.

[0116] Step 230: When the charging network is in the awake state, the target vehicle is controlled to be charged based on the electric energy provided by the charging pile.

[0117] The charging network wakes up and the charging process of the target vehicle starts.

[0118] Exemplarily, the charging pile obtains electrical energy (AC power) from the power grid and transmits it to the on-board charger via a charging cable (one end of the charging gun is inserted into the target vehicle, and the other end is a charging cable connected to the charging pile).

[0119] The on-board charger is responsible for converting the input AC power into DC power to meet the charging requirements of the target vehicle's vehicle battery. The converted DC power will be transmitted by the on-board charger to the vehicle's vehicle battery management module.

[0120] The vehicle battery management module plays a monitoring and management role in the entire charging process. The vehicle battery management module monitors the voltage, current, temperature and other parameters of the vehicle battery in real time to ensure that the battery is charged in a safe state. When the vehicle battery management module receives the DC power from the on-board charger, it will accurately regulate the charging current and voltage according to the current state of the battery, and then transmit the regulated DC power to the vehicle battery. For example, when the current battery power of the vehicle battery is low, a larger charging current is allowed to quickly replenish the power; when the current battery power is close to the preset battery power threshold (for example, full or reaching the target battery power), the charging current is reduced to prevent overcharging from causing damage to the vehicle battery.

[0121] During the entire charging process, the charging pile, the on-board charger and the vehicle battery management module continuously communicate and interact with each other to ensure that electric energy is safely and efficiently transmitted from the power grid to the vehicle battery through the charging pile and the on-board charger, thereby completing the charging operation of the target vehicle.

[0122] Step 240, receiving battery power data.

[0123] Among them, the battery power data is the data collected in real time by the vehicle battery management module during the charging process of the target vehicle.

[0124] The vehicle battery management module collects the current battery power of the vehicle battery in real time based on a preset frequency, obtains battery power data, and sends it to the on-board charger after each collection.

[0125] For example, the preset collection frequency is 10 seconds / time, and the change of battery power is obtained in real time based on this frequency.

[0126] Step 250 : In response to the battery power data meeting the preset charging completion requirement, a sleep signal is sent to the charging network.

[0127] Among them, the charging scenario is a scheduled charging scenario, and the preset charging completion requirement means that the battery power reaches the target battery power in the scheduled charging instruction.

[0128] In some embodiments, the charging scenario is not a scheduled charging scenario, and the preset charging completion requirement refers to when the battery power reaches its maximum power (ie, 100%).

[0129] The sleep signal is used to control the charging network to enter a sleep state and stop charging the target vehicle.

[0130] It is worth noting that in the above example, the wake-up and sleep mechanism of the vehicle charging network is implemented by the on-board charger sending a wake-up signal and a sleep signal at different times. In some embodiments, only one of the sleep signals may be sent, and the state of the charging network is determined based on the reception of the sleep signal.

[0131] For example, the on-board charger is controlled to continuously send a wake-up signal to the charging network based on a preset signal sending frequency, so that the charging network remains in an awake state and performs charging tasks. When the preset charging completion requirements are met, the on-board charger stops sending the wake-up signal. When the charging network does not receive the next wake-up signal after a preset time after the last time it received the wake-up signal, the charging network directly enters a sleep state.

[0132] In some embodiments, the scheduled charging instruction includes travel information, which is used to indicate the driving path of the target vehicle in the future time period. If the scheduled charging instruction does not indicate the target battery power to be reached after charging the vehicle battery, the maximum power required to meet the user's driving of the target vehicle can be automatically calculated based on the travel information, which not only ensures the user's driving needs, but also avoids the impact of overcharging on the life of the vehicle battery.

[0133] Optionally, mileage data of the target vehicle in a future time period is determined based on the travel information, and the mileage data is used to indicate the travel distance of the target vehicle when traveling based on the driving path.

[0134] The trip information includes at least one driving destination of the target vehicle in a future time period. The future time period refers to a time period divided based on the trip information. For example, if the trip information includes n driving destinations, where n is a positive integer, the future time period is divided based on the arrival time corresponding to the last driving destination, and the time period between the arrival time corresponding to the last driving destination and the current time is determined as the future time period.

[0135] Based on the travel information, the shortest driving route is planned for the target vehicle, and the total distance corresponding to the driving route is counted to obtain the mileage data.

[0136] First electric energy data of the target vehicle is acquired based on the mileage data, where the first electric energy data is used to indicate the total amount of electricity required when traveling based on the driving route.

[0137] Among them, based on the target vehicle driving in the highest energy consumption state, the total energy corresponding to the mileage data is obtained to obtain the first electric energy data, that is, the first electric energy data reflects the maximum electric energy consumption required by the target vehicle when driving based on the driving path.

[0138] A target battery charge of a vehicle battery of the target vehicle is determined based on the first power data.

[0139] The battery power increase is determined based on the ratio between the first electric energy data and the maximum battery capacity of the vehicle battery, and the target battery power is obtained based on the sum of the current battery power of the vehicle battery and the battery power increase.

[0140] In response to the battery power data reaching the target battery power, it is determined that the battery power data meets the preset charging completion requirement, and a sleep signal is sent to the charging network.

[0141] In some embodiments, if the sum of the current battery power of the vehicle battery and the battery power increase exceeds the maximum battery capacity of the vehicle battery, the target battery power is determined to be the maximum battery capacity of the vehicle battery. At this time, in response to the battery power data reaching the maximum battery capacity, it is determined that the battery power data meets the preset charging completion requirements, and a sleep signal is sent to the charging network.

[0142] In some embodiments, the charging stations that the target vehicle can pass through when traveling along the driving path can also be determined based on the driving information, and the power required for the target vehicle to travel from the current position to the next charging station can be used as the target total power to determine the charging start and end time of the target vehicle.

[0143] Optionally, charging station data is obtained based on the travel information, and the charging station data includes at least one charging station within a preset distance range of the driving route. The charging station can provide charging services for pure electric vehicles.

[0144] The preset distance range refers to the range with any point in the driving path as the center and the preset distance as the radius. If there is a charging station that meets the preset distance range requirements, it means that the target vehicle can pass by the charging station while driving along the driving path. The charging station data includes the straight-line distance between at least one charging station and the driving path.

[0145] A target charging station is determined from at least one charging station based on a current position of the target vehicle, wherein the target charging station meets at least one of the following conditions: a distance between a first position and the current position of the target charging station meets a preset distance requirement, and a path of the target vehicle when traveling from the current position to the first position meets a preset overlap requirement with the driving path.

[0146] For example, the preset distance requirement means that the distance between at least one charging station and the current position is calculated to obtain a collection D, wherein the distance D1 between the first position and the current position is the maximum value in the collection D.

[0147] A first driving distance that the target vehicle needs to travel from the current position to the first position is determined based on the driving path, where the first driving distance refers to the shortest distance required to reach the first position when traveling along the driving path.

[0148] Second electric energy data of the target vehicle is acquired based on the first driving distance, where the second electric energy data is used to indicate a total amount of electricity required for the target vehicle to travel from a current position to a first position.

[0149] Among them, based on the target vehicle driving in the highest energy consumption state, the total energy corresponding to the first driving distance is obtained to obtain the second electric energy data, that is, the second electric energy data reflects the maximum electric energy consumption required when the target vehicle drives to the target charging station.

[0150] A target battery charge of a vehicle battery of the target vehicle is determined based on the second power data.

[0151] The battery power increase is determined based on the ratio between the second electric energy data and the maximum battery capacity of the vehicle battery, and the target battery power is obtained based on the sum of the current battery power of the vehicle battery and the battery power increase.

[0152] In response to the battery power data reaching the target battery power, it is determined that the battery power data meets the preset charging completion requirement, and a sleep signal is sent to the charging network.

[0153] In summary, the power management method provided by the present application, when the target vehicle is connected to the charging pile, first determines whether there is a scheduled charging instruction, rather than immediately executing the charging operation. If there is a scheduled charging instruction, it can meet the user's demand for charging the vehicle within a specified time period, thereby improving the convenience of power management. The on-board charger sends a wake-up signal or a sleep signal to the charging network to implement an accurate network wake-up and sleep mechanism, simplifying the power management process and improving power management efficiency. Real-time collection of changes in battery power data promptly controls the vehicle to enter sleep mode, reduces unnecessary energy consumption, and improves energy utilization.

[0154] Figure 3 is a structural block diagram of a power management device provided by an exemplary embodiment of the present application, such as Figure 3 As shown, the device includes the following parts.

[0155] An acquisition module 310 is used to acquire a scheduled charging instruction when the target vehicle is connected to a charging pile, wherein the scheduled charging instruction is used to indicate a start time of charging of the target vehicle;

[0156] A sending module 320, configured to send a wake-up signal to a charging network based on the starting time, wherein the charging network includes a vehicle battery management module and the charging pile, and the wake-up signal is used to wake up the charging network to charge the target vehicle;

[0157] The control module 330 controls the target vehicle to be charged based on the electric energy provided by the charging pile when the charging network is in the awake state;

[0158] A receiving module 340, configured to receive battery power data, wherein the battery power data is data collected in real time by the vehicle battery management module during the charging process of the target vehicle;

[0159] The sending module 320 is further used to send a sleep signal to the charging network in response to the battery power data meeting a preset charging completion requirement, wherein the sleep signal is used to control the charging network to enter a sleep state and stop charging the target vehicle.

[0160] In an optional embodiment, the sending module 320 is further configured to send the wake-up signal to the charging network if the reserved charging instruction is not obtained within a preset time period.

[0161] In an optional embodiment, the sending module 320 is also used to determine the first time for sending the wake-up signal based on the starting time when the scheduled charging instruction is obtained, and the first time is a time before the starting time; send a wake-up signal to the charging network at the first time, so that the target vehicle starts charging at the starting time indicated by the scheduled charging instruction.

[0162] In an optional embodiment, the scheduled charging instruction includes a charging duration and a target battery power;

[0163] The sending module 320 is also used to determine the total power data of the target vehicle when charging based on the current battery power of the target vehicle and the target battery power; determine the first charging power required for charging the target vehicle based on the charging time and the total power data; obtain the output power data of the charging pile, and the output power data is used to describe the ability of the charging pile to output power; in response to the matching between the first charging power and the output power data meeting the preset charging time requirement, send the wake-up signal to the charging network based on the start time.

[0164] In an optional embodiment, the sending module 320 is also used to update the start time in response to the matching situation between the first charging power and the output power data not meeting the preset charging time requirement to obtain an updated start time; and send the wake-up signal to the charging network based on the updated start time.

[0165] In an optional embodiment, the sending module 320 is also used to determine the actual charging time required for the target vehicle based on the total power data and the output power data; and obtain the updated start time based on the actual charging time required and the charging end time in the scheduled charging instruction.

[0166] In an optional embodiment, the reservation charging instruction includes travel information, and the travel information is used to indicate the driving path of the target vehicle in a future time period;

[0167] The sending module 320 is further used to determine the mileage data of the target vehicle in the future time period based on the travel information, the mileage data being used to indicate the distance traveled by the target vehicle based on the driving path; to obtain first electric energy data of the target vehicle based on the mileage data, the first electric energy data being used to indicate the total amount of electricity required for driving based on the driving path; to determine the target battery power of the vehicle battery of the target vehicle based on the first electric energy data; and in response to the battery power data reaching the target battery power, to determine that the battery power data meets the preset charging completion requirement, to send the sleep signal to the charging network.

[0168] In an optional embodiment, the reservation charging instruction includes travel information, and the travel information is used to indicate the driving path of the target vehicle in a future time period;

[0169] The sending module 320 is further used to obtain charging station data based on the travel information, wherein the charging station data includes at least one charging station within a preset distance range of the driving path; determine the target charging station from the at least one charging station based on the current position of the target vehicle, wherein the target charging station meets at least one of the following conditions: the distance between the first position of the target charging station and the current position meets a preset distance requirement, and the path of the target vehicle when traveling from the current position to the first position meets a preset overlap requirement with the driving path; determine a first driving distance required for the target vehicle to travel from the current position to the first position based on the driving path; obtain second electric energy data of the target vehicle based on the first driving distance, wherein the second electric energy data is used to indicate the total electric energy required for the target vehicle to travel from the current position to the first position; determine a target battery power of the vehicle battery of the target vehicle based on the second electric energy data; in response to the battery power data reaching the target battery power, determine that the battery power data meets the preset charging completion requirement, and send the sleep signal to the charging network.

[0170] In summary, the power management device provided by the present application, when the target vehicle is connected to the charging pile, first determines whether there is a scheduled charging instruction, rather than immediately executing the charging operation. If there is a scheduled charging instruction, it can meet the user's demand for charging the vehicle within a specified time period, thereby improving the convenience of power management. The on-board charger sends a wake-up signal or a sleep signal to the charging network to implement an accurate network wake-up and sleep mechanism, simplifying the power management process and improving power management efficiency. Real-time collection of changes in battery power data can timely control the vehicle to enter sleep mode, reduce unnecessary energy consumption, and improve energy utilization.

[0171] It should be noted that the power management device provided in the above embodiment is only illustrated by the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. In addition, the power management device provided in the above embodiment and the power management method embodiment belong to the same concept. The specific implementation process is detailed in the method embodiment and will not be repeated here.

[0172] Figure 4 The block diagram of the structure of a computer device 400 provided by an exemplary embodiment of the present application is shown. The computer device 400 may be: a smart phone, a tablet computer, a Moving Picture Experts Group Audio Layer III (MP3) player, a Moving Picture Experts Group Audio Layer IV (MP4) player, a laptop computer or a desktop computer. The computer device 400 may also be called a user device, a portable terminal, a laptop terminal, a desktop terminal or other names.

[0173] Typically, the computer device 400 includes a processor 401 and a memory 402 .

[0174] The processor 401 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 401 may be implemented in at least one hardware form of digital signal processing (DSP), field-programmable gate array (FPGA), and programmable logic array (PLA). The processor 401 may also include a main processor and a coprocessor. The main processor is a processor for processing data in the awake state, also known as a central processing unit (CPU); the coprocessor is a low-power processor for processing data in the standby state. In some embodiments, the processor 401 may be integrated with a graphics processing unit (GPU), which is responsible for rendering and drawing the content to be displayed on the display screen. In some embodiments, the processor 401 may also include an artificial intelligence (AI) processor, which is used to process computing operations related to machine learning.

[0175] The memory 402 may include one or more computer-readable storage media, which may be non-transitory. The memory 402 may also include a high-speed random access memory, and a non-volatile memory, such as one or more disk storage devices, flash memory storage devices. In some embodiments, the non-transitory computer-readable storage medium in the memory 402 is used to store at least one instruction, which is used to be executed by the processor 401 to implement the power management method provided in the method embodiment of the present application.

[0176] In some embodiments, the computer device 400 further includes some other components 403, and the type and quantity of the other components 403 can be selected based on the functional requirements of the computer device 400. Those skilled in the art will appreciate that Figure 4 The structure shown in the figure does not constitute a limitation on the computer device 400, and the computer device 400 may include more or less components than those shown in the figure, or combine some components, or adopt a different arrangement of components.

[0177] Optionally, the computer readable storage medium may include: Read Only Memory (ROM), Random Access Memory (RAM), Solid State Drives (SSD) or optical disks, etc. Among them, the random access memory may include resistance random access memory (ReRAM) and dynamic random access memory (DRAM). The serial numbers of the above embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments.

[0178] An embodiment of the present application also provides a computer device, which includes a processor and a memory, wherein the memory stores at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by the processor to implement a power management method as described in any of the above embodiments of the present application.

[0179] An embodiment of the present application also provides a computer-readable storage medium, in which at least one instruction, at least one program, a code set or an instruction set is stored. The at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by a processor to implement a power management method as described in any of the above embodiments of the present application.

[0180] The embodiment of the present application also provides a computer program product or a computer program, which includes a computer instruction stored in a computer-readable storage medium. The processor of the computer device reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the computer device executes the power management method described in any of the above embodiments.

[0181] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0182] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A power management method, characterized in that: The method is performed by an on-board charger of a target vehicle, and includes: When the target vehicle is connected to the charging pile, obtaining a scheduled charging instruction, wherein the scheduled charging instruction is used to indicate a start time of charging the target vehicle; Sending a wake-up signal to a charging network based on the starting time, the charging network including a vehicle battery management module and the charging pile, the wake-up signal being used to wake up the charging network to charge the target vehicle; When the charging network is in an awake state, controlling the target vehicle to charge based on the electric energy provided by the charging pile; Receiving battery power data, the battery power data is data collected in real time by the vehicle battery management module during the charging process of the target vehicle; In response to the battery power data meeting a preset charging completion requirement, a sleep signal is sent to the charging network, where the sleep signal is used to control the charging network to enter a sleep state and stop charging the target vehicle.

2. The method according to claim 1, characterized in that When the target vehicle is connected to the charging pile, after obtaining the reserved charging instruction, the method further includes: When the reserved charging instruction is not obtained within a preset time period, the wake-up signal is sent to the charging network.

3. The method according to claim 1, characterized in that The sending a wake-up signal to the charging network based on the starting time includes: In the case where the scheduled charging instruction is obtained, determining a first time to send the wake-up signal based on the start time, the first time being a time before the start time; A wake-up signal is sent to the charging network at the first time, so that the target vehicle starts charging at the start time indicated by the scheduled charging instruction.

4. The method according to any one of claims 1 to 3, characterized in that: The scheduled charging instruction includes the charging duration and the target battery power; The sending a wake-up signal to the charging network based on the starting time includes: Determining total electric energy data of the target vehicle when charging based on the current battery power and the target battery power of the target vehicle; Determining a first charging power required for charging the target vehicle based on the charging duration and the total electric energy data; Acquire output power data of the charging pile, where the output power data is used to describe the ability of the charging pile to output electric energy; In response to a matching condition between the first charging power and the output power data meeting a preset charging time requirement, the wake-up signal is sent to the charging network based on the start time.

5. The method according to claim 4, characterized in that The method further comprises: In response to the matching condition between the first charging power and the output power data not meeting the preset charging time requirement, updating the start time to obtain an updated start time; The wake-up signal is sent to the charging network based on the updated start time.

6. The method according to claim 5, characterized in that The updating of the starting time to obtain an updated starting time includes: Determine the actual charging time required for the target vehicle based on the total electric energy data and the output power data; The updated start time is obtained based on the actual charging time and the charging end time in the scheduled charging instruction.

7. The method according to any one of claims 1 to 3, characterized in that: The reserved charging instruction includes travel information, and the travel information is used to indicate the driving path of the target vehicle in a future time period; In response to the battery power data meeting a preset charging completion requirement, sending a sleep signal to the charging network includes: Determine the mileage data of the target vehicle in the future time period based on the travel information, the mileage data being used to indicate the travel distance of the target vehicle when traveling based on the driving path; Acquire first electric energy data of the target vehicle based on the mileage data, where the first electric energy data is used to indicate the total amount of electricity required when traveling based on the driving route; determining a target battery charge of a vehicle battery of the target vehicle based on the first power data; In response to the battery power data reaching the target battery power, it is determined that the battery power data meets the preset charging completion requirement, and the sleep signal is sent to the charging network.

8. The method according to any one of claims 1 to 3, characterized in that: The reserved charging instruction includes travel information, and the travel information is used to indicate the driving path of the target vehicle in a future time period; In response to the battery power data meeting a preset charging completion requirement, sending a sleep signal to the charging network includes: acquiring charging station data based on the travel information, wherein the charging station data includes at least one charging station within a preset distance range of the driving route; Determine a target charging station from the at least one charging station based on the current position of the target vehicle, wherein the target charging station meets at least one of the following conditions: a distance between a first position of the target charging station and the current position meets a preset distance requirement, and a path of the target vehicle when traveling from the current position to the first position meets a preset coincidence requirement with the travel path; Determine a first driving distance that the target vehicle needs to travel from the current position to the first position based on the driving path; Acquire second electric energy data of the target vehicle based on the first driving distance, where the second electric energy data is used to indicate the total amount of electricity required for the target vehicle to travel from the current position to the first position; determining a target battery charge of a vehicle battery of the target vehicle based on the second power data; In response to the battery power data reaching the target battery power, it is determined that the battery power data meets the preset charging completion requirement, and the sleep signal is sent to the charging network.

9. A power management device, characterized in that: The device comprises: An acquisition module, used to acquire a scheduled charging instruction when the target vehicle is connected to the charging pile, wherein the scheduled charging instruction is used to indicate a start time of charging of the target vehicle; A sending module, configured to send a wake-up signal to a charging network based on the starting time, wherein the charging network includes a vehicle battery management module and the charging pile, and the wake-up signal is used to wake up the charging network to charge the target vehicle; A control module, when the charging network is in an awake state, controls the target vehicle to be charged based on the electric energy provided by the charging pile; A receiving module, used for receiving battery power data, wherein the battery power data is data collected in real time by the vehicle battery management module during the charging process of the target vehicle; The sending module is further used to send a sleep signal to the charging network in response to the battery power data meeting a preset charging completion requirement, wherein the sleep signal is used to control the charging network to enter a sleep state and stop charging the target vehicle.

10. A computer device, characterized in that: The computer device includes a processor and a memory, wherein the memory stores at least one program, and the at least one program is loaded and executed by the processor to implement the power management method according to any one of claims 1 to 8.

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