Power management methods, devices, and equipment

Abstract

This application discloses a power management method, apparatus, and device, relating to the field of vehicle technology. The method, executed by the on-board charger of a target vehicle, includes: when the target vehicle is connected to a charging pile, acquiring a scheduled charging instruction, the scheduled charging instruction indicating the start time of charging for the target vehicle; sending a wake-up signal to a charging network based on the start time, the charging network including a vehicle battery management module and a charging pile; when the charging network is in a wake-up state, controlling the target vehicle to charge based on the electrical energy provided by the charging pile; receiving battery power data; and in response to the battery power data meeting preset charging completion requirements, sending a sleep signal to the charging network, the sleep signal controlling the charging network to enter a sleep state and stop charging the target vehicle. This method can improve the efficiency of vehicle power management and energy utilization.

Description

Technical Field

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

[0002] A pure electric vehicle is a vehicle powered by an onboard rechargeable battery and driven by an electric motor. The onboard charger is one of the key components of a pure electric vehicle, primarily responsible for converting external AC power into DC power suitable for charging the vehicle's battery. During charging, the onboard charger first establishes a communication connection with the charging station and dynamically adjusts charging parameters, such as voltage and current, based on battery status information fed back by the battery management system, thereby achieving a safe and efficient charging process.

[0003] In related technologies, after a pure electric vehicle completes its charging process, it needs to wait for a period of time to monitor for new vehicle control commands before determining whether to put the vehicle into a sleep state. During this period, the battery management system, vehicle controller, various sensors, and communication modules all need to remain active to ensure that any possible commands can be captured in a timely manner.

[0004] However, these devices continue to consume power while waiting, causing unnecessary energy consumption when no new instructions are received, reducing the overall energy efficiency of the vehicle and resulting in low efficiency in vehicle power management. Summary of the Invention

[0005] This application provides a power management method, apparatus, and device that can improve the efficiency of vehicle power management and energy utilization. The technical solution is as follows:

[0006] On the one hand, a power management method is provided, executed by the on-board charger of the target vehicle, the method comprising:

[0007] When the target vehicle is connected to the charging station, a scheduled charging instruction is obtained, which indicates the start time of charging for the target vehicle.

[0008] Based on the aforementioned start time, a wake-up signal is sent to the charging network, which includes a vehicle battery management module and the charging pile. The wake-up signal is used to wake up the charging network to charge the target vehicle.

[0009] When the charging network is in a wake-up state, the target vehicle is controlled to charge based on the electrical energy provided by the charging pile;

[0010] Receive battery power data, which 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 the preset charging completion requirements, a sleep signal is sent to the charging network. The sleep signal is used to control the charging network to enter a sleep state and stop charging the target vehicle.

[0012] On the other hand, a power management device is provided, the device comprising:

[0013] The acquisition module is 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 the start time of charging of the target vehicle.

[0014] A sending module is used to send a wake-up signal to the charging network based on the start time. The charging network includes a vehicle battery management module and the charging pile. The wake-up signal is used to wake up the charging network to charge the target vehicle.

[0015] The control module, when the charging network is in a wake-up state, controls the target vehicle to charge based on the electrical energy provided by the charging pile;

[0016] The receiving module is used to receive battery power data, which 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 also configured to send a sleep signal to the charging network in response to the battery power data meeting the preset charging completion requirements. 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 scheduled charging instruction is not received within a preset time period.

[0019] In an optional embodiment, the sending module is further configured to, upon receiving the scheduled charging instruction, determine a first time to send the wake-up signal based on the start time, wherein the first time is a time prior to the start time; and send the wake-up signal to the charging network at the first time, so that the target vehicle begins charging at the start time indicated by the scheduled charging instruction.

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

[0021] The sending module is further configured to: determine the total energy data of the target vehicle during charging based on the current battery level and the target battery level of the target vehicle; determine the first charging power required for charging the target vehicle based on the charging duration and the total energy data; acquire the output power data of the charging pile, the output power data being used to describe the charging pile's ability to output energy; and, in response to the matching between the first charging power and the output power data meeting a 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 further configured to update the start time in response to the fact that the matching between the first charging power and the output power data does not meet the preset charging time requirement, to obtain an updated start time; and to send the wake-up signal to the charging network based on the updated start time.

[0023] In an optional embodiment, the sending module is further configured 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 scheduled charging instruction includes trip information, which is used to indicate the travel route of the target vehicle in a future time period;

[0025] The sending module is further configured to: determine the mileage data of the target vehicle within the future time period based on the trip information, wherein the mileage data indicates the distance traveled by the target vehicle based on the travel route; obtain first energy data of the target vehicle based on the mileage data, wherein the first energy data indicates the total energy required for travel based on the travel route; determine the target battery capacity of the vehicle battery based on the first energy data; and, in response to the battery capacity data reaching the target battery capacity, determine that the battery capacity data meets the preset charging completion requirements and send the sleep signal to the charging network.

[0026] In an optional embodiment, the scheduled charging instruction includes trip information, which is used to indicate the travel route of the target vehicle in a future time period;

[0027] The sending module is further configured to: acquire charging station data based on the trip information, wherein the charging station data includes at least one charging station within a preset distance range of the driving path; determine a target charging station from the at least one charging station based on the current location of the target vehicle, wherein the target charging station meets at least one of the following conditions: the distance between the first location of the target charging station and the current location meets a preset distance requirement; the path taken by the target vehicle from the current location to the first location meets a preset overlap requirement with the driving path; determine a first driving distance required for the target vehicle to travel from the current location to the first location based on the driving path; acquire second energy data of the target vehicle based on the first driving distance, wherein the second energy data indicates the total energy required for the target vehicle to travel from the current location to the first location; determine a target battery charge of the target vehicle's battery based on the second energy data; and, in response to the battery charge data reaching the target battery charge, determine that the battery charge 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, the computer device including a processor and a memory, the memory storing at least one instruction, at least one program, code set or instruction set, the at least one instruction, the at least one program, the code set or instruction set being loaded and executed by the processor to implement the power management method as described in any of the embodiments of this application above.

[0029] On the other hand, a computer-readable storage medium is provided, wherein at least one instruction, at least one program, code set, or instruction set is stored therein, wherein 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 the power management method as described in any of the embodiments of this application above.

[0030] On the other hand, a computer program product or computer program is provided, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform any of the power management methods described in the above embodiments.

[0031] The beneficial effects of the technical solutions provided in this application include at least the following:

[0032] When the target vehicle is connected to the charging station, the system first checks for a scheduled charging instruction before immediately executing the charging operation. If a scheduled charging instruction exists, it fulfills the user's need to charge the vehicle within a specified time period, improving the convenience of power management. The onboard charger sends wake-up or sleep signals to the charging network, achieving a precise network wake-up and sleep mechanism, simplifying the power management process and improving efficiency. Real-time monitoring of battery power data changes allows for timely control of the vehicle to enter sleep mode, reducing unnecessary energy consumption and improving energy utilization. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0034] Figure 1 This is a schematic diagram of a power management system provided in an exemplary embodiment of this application;

[0035] Figure 2 This is a flowchart of a power management method provided in an exemplary embodiment of this application;

[0036] Figure 3 This is a structural block diagram of a power management device provided in an exemplary embodiment of this application;

[0037] Figure 4 This is a structural block diagram of a computer device provided in an exemplary embodiment of this application. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0039] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

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

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

[0042] A Battery Management System (BMS) is an electronic system used to monitor, control, and manage battery packs. It is primarily used in battery applications in electric vehicles, energy storage systems, and power tools. In pure electric vehicles, the BMS mainly monitors parameters such as voltage, current, and temperature of the battery pack in real time. Based on the detected parameters, it determines the battery's state of charge / remaining capacity and battery health status, ensuring safe and efficient charging and discharging processes.

[0043] A pure electric vehicle is a car 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 component of the charging system for pure electric vehicles and is typically installed inside the vehicle.

[0044] The main function of an on-board charger is to convert external AC power into DC power suitable for charging the vehicle's battery system, and to control and manage the charging process to ensure safe, efficient, and stable charging. On-board chargers have multiple safety protection functions, including overvoltage protection, overcurrent protection, overheat protection, and leakage protection, to prevent safety issues during charging.

[0045] Furthermore, the on-board charger can communicate with the vehicle's battery management system / module and external charging stations to negotiate charging parameters and provide feedback on charging status. Once the vehicle is connected to a charging station, the on-board charger first establishes a communication connection. Based on various battery status information fed back by the battery management system, such as the current battery charge level, battery voltage, and battery temperature, it dynamically adjusts and changes relevant charging parameters, such as charging voltage and charging current, to ensure the vehicle battery is fully charged in good condition.

[0046] In related technologies, after a pure electric vehicle completes its charging process, it needs to wait for a period of time before entering a sleep state. During this waiting period, the vehicle continuously monitors for new vehicle control commands and determines whether to initiate a sleep state based on the monitoring results. If a new vehicle control command is available, the vehicle will not enter a sleep state temporarily; otherwise, it will enter a sleep state.

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

[0048] Therefore, these vehicle components / systems continue to consume electricity. In situations where no new instructions are received during waiting periods, this results in unnecessary energy loss. This leads to lower overall energy efficiency for the vehicle and impacts the efficiency of electricity management.

[0049] Secondly, the power management system involved in the embodiments of this application will be described in an illustrative manner. Please refer to [the relevant documentation]. Figure 1 The system includes an on-board charger 110 for the target vehicle, a vehicle battery management module 120 for the target vehicle, an on-board terminal 130 for the target vehicle, and a charging pile 140.

[0050] Users can set a scheduled charging instruction for the target vehicle in advance. 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 received, the charging start time is determined based on the charging start time indicated in the scheduled charging instruction.

[0052] Specifically, a wake-up signal is sent to the vehicle battery management module 120 and the charging pile 140 at the start time to wake up the target vehicle's charging network and start charging the target vehicle. At this time, the charging pile 140 supplies power to the target vehicle, and the on-board charger 110 converts the AC power in the charging pile 140 into DC power. The vehicle battery management module 120 monitors the battery level data of the target vehicle's battery in real time and feeds the battery level data back to the on-board charger 110 to prompt the on-board charger 110 whether to stop charging and control the target vehicle to enter a sleep state.

[0053] When the battery charge 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 (i.e., the vehicle battery management module 120 and the charging pile 140). The sleep signal is used to control the charging network to enter a sleep state.

[0054] For example, 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 no scheduled charging instruction is received, the target vehicle's charging network will be activated directly to charge the vehicle. During the charging process, the battery level data will be monitored in real time as described above, and the target vehicle will be promptly put into sleep mode.

[0056] In some embodiments, the above-mentioned step of obtaining the scheduled 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 the 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 aforementioned servers can be independent physical servers, server clusters or distributed systems composed of multiple physical servers, or cloud servers that provide basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, content delivery networks (CDN), and big data and artificial intelligence platforms.

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

[0059] Based on the above description of terms and application scenarios, the power management method provided in this application will be explained. This method can be executed by an on-board charger, an on-board terminal, or both. The explanation will focus on the method being executed by the on-board charger of the target vehicle as an example. Figure 2 As shown, Figure 2 This is a flowchart of a power management method provided in an exemplary embodiment of this application. The method includes the following steps.

[0060] Step 210: If the target vehicle is connected to the charging station, obtain the scheduled charging instruction.

[0061] The target vehicle is a pure electric vehicle, connected to a charging station via a charging cable, capable of drawing power to charge its battery. A communication connection is also established between the charging station and the target vehicle.

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

[0063] The scheduled charging command is used to indicate the start time of charging for the target vehicle. Users can schedule charging for the target vehicle by making a reservation operation through the target vehicle's own central control system. The vehicle terminal generates a scheduled charging command based on the received reservation operation. When the user leaves the target vehicle, the vehicle can also be automatically charged based on the scheduled charging command.

[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. Users can install the vehicle management application on their mobile terminal or log in to the vehicle management platform to register relevant information about the target vehicle. They can then make online reservations through the vehicle management platform / application, and the reservation operation will be synchronized to the on-board terminal of the target vehicle via a wireless communication network to generate a scheduled 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 the charging time period of the target vehicle, which is a time period divided based on the start and end times of charging, during which the target vehicle is allowed to charge.

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

[0069] Alternatively, in some embodiments, the charging time period for the target vehicle can be set periodically. For example, the charging time period can 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 start time of charging. Before the start time, even if the target vehicle is connected to the charging station, charging will not be started. Charging will only start at the start time.

[0071] 1.3 For example, the charging time information only includes the charging termination time. Charging can be started at any time before the termination time, and charging will automatically stop at the termination time.

[0072] When scheduling charging based on a termination time, the total amount of electricity required for charging is calculated based on the difference between the current battery level and the specified target battery level. The charging time required to charge the target vehicle is calculated based on the average charging power of the charging station for other vehicles within a historical time period. The start time for charging is then determined based on the charging time and the termination time. The historical time period refers to the period during which the charging station last charged a vehicle.

[0073] For example, if the total amount of electricity required for charging is 15kWh, the average charging power of the charging pile during the historical 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) Target battery capacity of the target vehicle. The target battery capacity refers to the desired battery capacity that the vehicle's battery will reach through charging. For example, a target battery capacity of 90% means that the battery will reach 90% of its maximum capacity through charging. Combining the target battery capacity and the current battery capacity of the target vehicle, the total electrical energy required for charging can be determined. For example, if the maximum battery capacity of the vehicle is 60 kWh, and the target battery capacity is set to 90%, then the amount of electricity that needs to be charged is 60 × 90% = 54 kWh. If the current battery capacity is 30%, that is, there is still 60 × 30% = 18 kWh of electricity left in the battery, then the total electrical energy required for charging is 54 - 18 = 36 kWh.

[0075] (3) The maximum charging power of the target vehicle refers to the maximum 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, so as to adjust it to the range of the maximum charging power.

[0076] In other words, when the target vehicle is connected to the charging station, the on-board charger will not immediately wake up the vehicle's charging network to start charging the target vehicle. Instead, it will first send a request to the on-board terminal to obtain information about the scheduled charging instruction in order to determine whether there is a scheduled charging instruction.

[0077] If a scheduled charging instruction is received, the system will determine whether to start charging based on the charging start time indicated in the 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 replenishment for pure electric vehicles, which mainly consists of external charging facilities and internal vehicle systems / components related to power management.

[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 begins to prepare the charging environment.

[0081] The wake-up signal is used to switch the charging network from sleep mode to wake-up mode. In wake-up mode, the charging network can provide power output normally, perform charging control and communication between charging modules. The charging network and the various modules of the target vehicle are in an active state, with higher power consumption. In sleep mode, the charging network does not output power and cannot realize the charging process of the target vehicle. The charging network and the various modules of the target vehicle are in a low-power or off state, maintaining only basic monitoring functions, with reduced power consumption.

[0082] Optionally, upon receiving a scheduled charging instruction, the first moment for sending the wake-up signal is determined based on the start time, where the first moment is a moment prior to the start time.

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

[0084] In other words, sending a wake-up signal at the first moment allows time to prepare the charging environment, so that the target vehicle can start charging on time at the scheduled charging time.

[0085] For example, the preparatory steps before charging begins include: the on-board charger sending a wake-up signal, the charging network receiving 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 to obtain the first duration. The time that is the first duration from the start time is determined as the first moment.

[0087] For example, if the first duration is 5 seconds and the starting 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 capacity. The charging duration refers to the total duration of the charging period, and the target battery capacity refers to the desired battery capacity that the vehicle battery will reach through charging.

[0089] For example, if the charging period starts at 09:00:00 and ends at 10:00:00, the charging time is 60 minutes.

[0090] The total electrical energy data of the target vehicle during charging is determined based on the current battery level and the target battery level.

[0091] Total energy data refers to the total amount of electricity required to increase the battery capacity of a target vehicle from its current capacity to the target battery capacity.

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

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

[0094] The first charging power must be greater than or equal to the total energy data / charging time. In order to ensure that the vehicle battery reaches the target battery level within the charging time period specified in the scheduled charging instruction, the first charging power required for the target vehicle to charge must be greater than the result of dividing the total energy data by the charging time. Otherwise, the charging time period will be exceeded.

[0095] Obtain the output power data of the charging pile. The output power data is used to describe the charging pile's ability to output electrical energy. In other words, the output power data includes the output power of the charging pile.

[0096] Optionally, in response to the matching between the first charging power and the output power data meeting the preset charging time requirements, 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 matching 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 amount of electricity required to increase the vehicle battery from its current battery level to the target battery level.

[0098] In some embodiments, the output power data includes the rated output power of the charging pile, and the current condition may be determined by the following methods to determine whether the preset charging time requirement is met.

[0099] Output power refers to the amount of electrical energy that a charging pile can deliver to the battery of a pure electric vehicle per unit time. Rated output power is the power value that a charging pile can continuously and stably output under ideal working conditions according to design requirements. It is the standard power specified in the design and manufacturing of the charging pile and is usually expressed in kilowatts (kW).

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

[0101] The output power data includes the correlation between the charging pile's actual output power and its rated output power. This correlation indicates the ratio between the actual output power and the rated output power under different battery charge levels. Actual output power refers to the charging pile's actual ability to charge the vehicle battery. Typically, the actual output power does not exceed the rated output power, and it is affected by the vehicle battery's current charge level. There is a negative correlation between the vehicle battery's current charge level and the actual output power; that is, the higher the current battery charge, the lower the actual output power.

[0102] For example, the correspondence is shown in Formula 1 below:

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

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

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

[0106] Formula 2 below calculates the total amount of electricity that the charging pile can output during the charging period by performing a definite integral operation on P1 based on the charging time t (ranging from t1 to t2, where t1 is the start time of the charging period and t2 is the end time of the charging period).

[0107] Formula 2:

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

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

[0110] For example, the actual charging time required for the target vehicle is determined based on total energy data and output power data. The updated start time is then 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 energy data / output power data, and the time that is T away from the charging end time and is located before the charging end time is determined as the updated start time.

[0112] Alternatively, based on Formula 2 above, the value of the total energy E is set to the value corresponding to the total energy data or greater than the total energy data value. The starting time t1 is set as a variable, and the rest remains unchanged. The updated starting time that makes the total energy E conform to the current battery level of the vehicle battery to the target battery level is calculated.

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

[0114] Optionally, if no scheduled charging instruction is received within a preset time period, a wake-up signal is sent to the charging network.

[0115] In some embodiments, step 220 can be performed by the vehicle-mounted terminal, which directly wakes up the charging network based on the locally stored scheduled charging command. During this process, the vehicle-mounted terminal determines the first moment when the charging network needs to be woken up based on the start time indicated in the scheduled charging command, waking up the charging network in advance to ensure charging starts on time. Alternatively, the vehicle-mounted terminal controls the on-board charger to continuously send wake-up signals to the charging network to wake it up.

[0116] Step 230: When the charging network is in a wake-up state, control the target vehicle to charge based on the power provided by the charging pile.

[0117] The charging network is activated, and the charging process for the target vehicle begins.

[0118] For example, the charging pile obtains electrical energy (alternating current) from the power grid and transmits it to the on-board charger through 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 needs of the target vehicle's battery. The converted DC power is then transmitted by the on-board charger to the vehicle's battery management module.

[0120] The vehicle battery management module (BLM) plays a monitoring and management role throughout the charging process. It monitors parameters such as voltage, current, and temperature of the vehicle battery in real time to ensure safe charging. When the BLM receives DC power from the onboard charger, it precisely adjusts the charging current and voltage based on the battery's current state before transmitting the adjusted DC power to the battery. For example, when the battery's charge level is low, a larger charging current is allowed to quickly replenish the charge; when the battery's charge level approaches a preset threshold (e.g., fully charged or reaching the target charge level), the charging current is reduced to prevent overcharging and damage to the battery.

[0121] Throughout the charging process, the charging pile, on-board charger, and vehicle battery management module continuously communicate and interact to ensure that electrical energy is safely and efficiently transmitted from the power grid through the charging pile and on-board charger to the vehicle battery, thus completing the charging operation for the target vehicle.

[0122] Step 240: Receive battery power data.

[0123] Among them, the battery power data is 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 sampling frequency is 10 seconds / time, and the changes in battery power are obtained in real time based on this frequency.

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

[0127] In this case, the charging scenario is a scheduled charging scenario, and the preset charging completion requirement means that the battery level reaches the target battery level in the scheduled charging instruction.

[0128] In some embodiments, where the charging scenario is not a scheduled charging scenario, the preset full charging requirement refers to the battery reaching its maximum capacity (i.e., 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 wake-up signals and sleep signals at different times. In some embodiments, only one type of sleep signal may be sent, and the state of the charging network may be determined based on the reception of the sleep signal.

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

[0132] In some embodiments, the scheduled charging instruction includes trip information, which indicates the driving route of the target vehicle within a future time period. If the scheduled charging instruction does not indicate the target battery level to be reached after charging the vehicle battery, the maximum battery level required to drive the target vehicle can be automatically calculated based on the trip information. This ensures the user's driving needs are met while avoiding the impact of overcharging on the vehicle battery's lifespan.

[0133] Optionally, the mileage data of the target vehicle in a future time period is determined based on the trip information, and the mileage data is used to indicate the distance traveled by the target vehicle based on the travel route.

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

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

[0136] The first electrical energy data of the target vehicle is obtained based on the mileage data. The first electrical energy data is used to indicate the total amount of electricity required when driving based on the driving route.

[0137] Specifically, based on the target vehicle driving under the highest energy consumption state, the total energy corresponding to the driving mileage data is obtained to obtain the first electrical energy data. That is, the first electrical energy data reflects the maximum electrical energy consumption required by the target vehicle when driving based on the driving path.

[0138] The target battery capacity of the target vehicle's battery is determined based on the first electrical energy data.

[0139] The battery capacity increment is determined based on the ratio between the first electrical energy data and the maximum battery capacity of the vehicle battery, and the target battery capacity is obtained by summing the current battery capacity of the vehicle battery and the battery capacity increment.

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

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

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

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

[0144] The preset distance range refers to the area encompassed by a circle centered at any point along the driving path and with a preset distance as the radius. If a charging station exists that meets the preset distance range requirement, it means that the target vehicle can pass through that charging station while traveling along the driving path. The charging station data includes the straight-line distance between at least one charging station and the driving path.

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

[0146] For example, the preset distance requirement means calculating the distance between at least one charging station and the current location to obtain a set D, where the distance D1 between the first location and the current location is the maximum value in the set D.

[0147] The first travel distance required for the target vehicle to travel from its current location to the first location is determined based on the travel path. The first travel distance refers to the shortest distance required to reach the first location while traveling along the travel path.

[0148] The second electrical energy data of the target vehicle is obtained based on the first driving distance. The second electrical 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.

[0149] Specifically, based on the target vehicle driving at its highest energy consumption state, the total energy corresponding to the first driving distance is obtained to obtain the second electrical energy data. That is, the second electrical energy data reflects the maximum electrical energy consumption required for the target vehicle to drive to the target charging station.

[0150] The target battery capacity of the target vehicle's battery is determined based on the second electrical energy data.

[0151] The battery capacity increment is determined based on the ratio between the second electrical energy data and the maximum battery capacity of the vehicle battery, and the target battery capacity is obtained by summing the current battery capacity of the vehicle battery and the battery capacity increment.

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

[0153] In summary, the power management method provided in this application, when the target vehicle is connected to a charging pile, first determines whether a scheduled charging instruction exists, rather than immediately executing the charging operation. If a scheduled charging instruction exists, it can meet the user's need to charge the vehicle within a specified time period, improving the convenience of power management. The onboard charger sends a wake-up signal or sleep signal to the charging network, realizing a precise network wake-up and sleep mechanism, simplifying the power management process and improving power management efficiency. Real-time collection of battery power data changes allows for timely control of the vehicle to enter sleep mode, reducing unnecessary energy consumption and improving energy utilization.

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

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

[0156] The sending module 320 is used to send a wake-up signal to the charging network based on the start time. The charging network includes a vehicle battery management module and the charging pile. The wake-up signal is used to wake up the charging network to charge the target vehicle.

[0157] Control module 330, when the charging network is in a wake-up state, controls the target vehicle to charge based on the electrical energy provided by the charging pile;

[0158] The receiving module 340 is used to receive battery power data, which 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 configured to send a sleep signal to the charging network in response to the battery power data meeting the preset charging completion requirements. 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 scheduled charging instruction is not received within a preset time period.

[0161] In an optional embodiment, the sending module 320 is further configured to, upon receiving the scheduled charging instruction, determine a first time to send the wake-up signal based on the start time, wherein the first time is a time prior to the start time; and send the wake-up signal to the charging network at the first time, so that the target vehicle begins charging at the start time indicated by the scheduled charging instruction.

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

[0163] The sending module 320 is further configured to: determine the total energy data of the target vehicle during charging based on the current battery level and the target battery level of the target vehicle; determine the first charging power required for charging the target vehicle based on the charging duration and the total energy data; acquire the output power data of the charging pile, the output power data being used to describe the charging pile's ability to output energy; and, in response to the matching between the first charging power and the output power data meeting a 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 further configured to update the start time in response to the fact that the matching between the first charging power and the output power data does not meet the preset charging time requirement, to obtain an updated start time; and to 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 further configured 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.

[0166] In an optional embodiment, the scheduled charging instruction includes trip information, which is used to indicate the travel route of the target vehicle in a future time period;

[0167] The sending module 320 is further configured to: determine the mileage data of the target vehicle within the future time period based on the trip information, wherein the mileage data indicates the distance traveled by the target vehicle along the travel route; obtain first energy data of the target vehicle based on the mileage data, wherein the first energy data indicates the total energy required for travel along the travel route; determine the target battery level of the target vehicle's battery based on the first energy data; and, in response to the battery level data reaching the target battery level, determine that the battery level data meets the preset charging completion requirements and send the sleep signal to the charging network.

[0168] In an optional embodiment, the scheduled charging instruction includes trip information, which is used to indicate the travel route of the target vehicle in a future time period;

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

[0170] In summary, the power management device provided in this application, when the target vehicle is connected to a charging pile, first determines whether a scheduled charging instruction exists, rather than immediately executing a charging operation. If a scheduled charging instruction exists, it can meet the user's need to charge the vehicle within a specified time period, improving the convenience of power management. The onboard charger sends wake-up or sleep signals to the charging network, realizing a precise network wake-up and sleep mechanism, simplifying the power management process and improving power management efficiency. Real-time collection of battery power data changes allows for timely control of the vehicle to enter sleep mode, reducing unnecessary energy consumption and improving energy utilization.

[0171] It should be noted that the power management device provided in the above embodiments is only an example of 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 and the power management method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process can be found in the method embodiments, which will not be repeated here.

[0172] Figure 4 This illustration shows a structural block diagram of a computer device 400 provided in an exemplary embodiment of this application. The computer device 400 may be a smartphone, tablet computer, Moving Picture Experts Group Audio Layer III (MP3) player, Moving Picture Experts Group Audio Layer IV (MP4) player, laptop computer, or desktop computer. The computer device 400 may also be referred to as a user device, portable terminal, laptop terminal, desktop terminal, or other names.

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

[0174] Processor 401 may include one or more processing cores, such as a quad-core processor, an octa-core processor, etc. Processor 401 may be implemented using at least one hardware form selected from Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), and Programmable Logic Array (PLA). Processor 401 may also include a main processor and a coprocessor. The main processor, also known as the Central Processing Unit (CPU), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, processor 401 may integrate a Graphics Processing Unit (GPU), which is responsible for rendering and drawing the content to be displayed on the screen. In some embodiments, processor 401 may also include an Artificial Intelligence (AI) processor, which is used to handle computational 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 high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In some embodiments, the non-transitory computer-readable storage media in the memory 402 are used to store at least one instruction, which is executed by the processor 401 to implement the power management method provided in the method embodiments of this application.

[0176] In some embodiments, the computer device 400 also includes other components 403, the type and number of which can be selected based on the functional needs of the computer device 400. Those skilled in the art will understand that... Figure 4 The structure shown does not constitute a limitation on computer device 400, and may include more or fewer components than shown, or combine certain components, or use different component arrangements.

[0177] Optionally, the computer-readable storage medium may include: read-only memory (ROM), random access memory (RAM), solid-state drives (SSDs), or optical discs, etc. The random access memory may include resistive random access memory (ReRAM) and dynamic random access memory (DRAM). The sequence numbers of the embodiments in this application are merely descriptive and do not represent the superiority or inferiority of the embodiments.

[0178] This application also provides a computer device, which includes a processor and a memory. The memory stores at least one instruction, at least one program, a code set, or an instruction set. 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 the power management method as described in any of the above embodiments of this application.

[0179] This application also provides a computer-readable storage medium storing at least one instruction, at least one program, code set, or instruction set, wherein 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 the power management method as described in any of the above embodiments of this application.

[0180] This application also provides a computer program product or computer program that includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform any of the power management methods described in the above embodiments.

[0181] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware or by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.

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

Claims

1. A power management method, characterized in that, Performed by the on-board charger of the target vehicle, the method includes: When the target vehicle is connected to the charging station, a scheduled charging instruction is obtained, which indicates the start time of charging for the target vehicle. Based on the aforementioned start time, a wake-up signal is sent to the charging network, which includes a vehicle battery management module and the charging pile. The wake-up signal is used to wake up the charging network to charge the target vehicle. When the charging network is in a wake-up state, the target vehicle is controlled to charge based on the electrical energy provided by the charging pile; Receive battery power data, which 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 the preset charging completion requirements, a sleep signal is sent to the charging network. The sleep signal is used to control the charging network to enter a sleep state and stop charging the target vehicle. The scheduled charging instruction includes travel information, which is used to indicate the driving route of the target vehicle in a future time period. The step of sending a sleep signal to the charging network in response to the battery power data meeting a preset charging completion requirement includes: Based on the trip information, charging station data is obtained, and the charging station data includes at least one charging station within a preset distance range of the driving path; A target charging station is determined from the at least one charging station based on the current location of the target vehicle, wherein the target charging station meets at least one of the following conditions: the distance between the first location of the target charging station and the current location meets a preset distance requirement; the path taken by the target vehicle from the current location to the first location and the driving path meet a preset overlap requirement; Based on the driving path, determine the first driving distance that the target vehicle needs to travel from the current location to the first location; Based on the first driving distance, a second electrical energy data of the target vehicle is obtained, and the second electrical energy data is used to indicate the total electrical energy required for the target vehicle to travel from the current position to the first position; The target battery capacity of the target vehicle's battery is determined based on the second electrical energy 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 requirements, and the sleep signal is sent to the charging network; The preset distance requirement refers to calculating the distance between the at least one charging station and the current location to obtain a set D, wherein the distance D1 between the first location and the current location is the maximum value in the set D.

2. The method according to claim 1, characterized in that, After obtaining the scheduled charging instruction when the target vehicle is connected to the charging station, the method further includes: If the scheduled charging instruction is not received 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, Sending a wake-up signal to the charging network based on the start time includes: Upon receiving the scheduled charging instruction, a first time to send the wake-up signal is determined based on the start time, wherein the first time is a time prior to the start time; A wake-up signal is sent to the charging network at the first moment, causing the target vehicle to start 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 capacity; Sending a wake-up signal to the charging network based on the start time includes: The total electrical energy data of the target vehicle during charging is determined based on the current battery level and the target battery level of the target vehicle. The first charging power required for charging the target vehicle is determined based on the charging time and the total energy data. The output power data of the charging pile is obtained, and the output power data is used to describe the charging pile's ability to output electrical energy. In response to the fact that the matching between the first charging power and the output power data meets the preset charging time requirements, 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 includes: In response to the fact that the matching between the first charging power and the output power data does not meet the preset charging time requirement, the start time is updated 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 step of updating the start time to obtain the updated start time includes: The actual charging time required for the target vehicle is determined based on the total energy data and the output power data. The updated start time is obtained based on the actual charging time required and the charging end time in the scheduled charging instruction.

7. A power management device, characterized in that, The device includes: The acquisition module is used to acquire a scheduled charging instruction when the target vehicle is connected to the charging pile. The scheduled charging instruction is used to indicate the start time of charging for the target vehicle. A sending module is used to send a wake-up signal to the charging network based on the start time. The charging network includes a vehicle battery management module and the charging pile. The wake-up signal is used to wake up the charging network to charge the target vehicle. The control module, when the charging network is in a wake-up state, controls the target vehicle to charge based on the electrical energy provided by the charging pile; The receiving module is used to receive battery power data, which is data collected in real time by the vehicle battery management module during the charging process of the target vehicle. The sending module is also configured to send a sleep signal to the charging network in response to the battery power data meeting the preset charging completion requirements. The sleep signal is used to control the charging network to enter a sleep state and stop charging the target vehicle. The scheduled charging instruction includes travel information, which is used to indicate the driving route of the target vehicle in a future time period. The sending module is further configured to: acquire charging station data based on the trip information, wherein the charging station data includes at least one charging station within a preset distance range of the driving path; determine a target charging station from the at least one charging station based on the current location of the target vehicle, wherein the target charging station meets at least one of the following conditions: the distance between the first location of the target charging station and the current location meets a preset distance requirement; the path taken by the target vehicle from the current location to the first location meets a preset overlap requirement with the driving path; determine a first driving distance required for the target vehicle to travel from the current location to the first location based on the driving path; acquire second energy data of the target vehicle based on the first driving distance, wherein the second energy data indicates the total energy required for the target vehicle to travel from the current location to the first location; determine a target battery charge of the vehicle battery based on the second energy data; and, in response to the battery charge data reaching the target battery charge, determine that the battery charge data meets the preset charging completion requirement and send the sleep signal to the charging network. The preset distance requirement refers to calculating the distance between the at least one charging station and the current location to obtain a set D, wherein the distance D1 between the first location and the current location is the maximum value in the set D.

8. A computer device, characterized in that, The computer device includes a processor and a memory, the memory storing at least one program, which is loaded and executed by the processor to implement the power management method as described in any one of claims 1 to 6.

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