Charging method, battery management system, vehicle, storage medium, and program product

Abstract

The application relates to the technical field of charging management, in particular to a charging method, a battery management system, a vehicle, a storage medium and a program product, wherein the method comprises the following steps: acquiring a vehicle use time of a user and acquiring charging parameters of a current charging device; calculating a remaining charging duration of the vehicle according to the vehicle use time, the charging parameters, an actual remaining SOC of a power battery, a charging cutoff SOC, an actual temperature and a maximum available capacity; calculating a charging start time of the vehicle according to the remaining charging duration and judging whether a current time reaches the charging start time, wherein if the current time reaches the charging start time, the current charging device is controlled to charge the vehicle until the charging is completed. Therefore, the problems that a fixed strategy is used to limit the heat preservation time of the vehicle, the heat preservation effect of the power battery is poor, the low-temperature cruising range retention rate of the electric vehicle is low, the charging application demand of the user in an actual scene is difficult to meet, the experience is poor, customer stickiness is low and the like are solved.

Description

Technical Field

[0001] This application relates to the field of charging management technology, and in particular to a charging method, a battery management system, a vehicle, a storage medium, and a software product. Background Technology

[0002] In related technologies, to ensure low-temperature driving range, most electric vehicles adopt a plug-in charging strategy with battery insulation. At the start of plug-in charging, the battery temperature is heated to approximately 25°C (normal temperature). After charging is complete, battery insulation is activated to maintain the battery temperature at around 25°C. This method typically limits the insulation time to a fixed value based on big data, which users cannot control. If the vehicle is used late at night, the insulation time may exceed the limit, causing the battery temperature to drop again and negating the insulation effect. Furthermore, the power consumption during the insulation period after charging is also a loss of energy. Moreover, the battery temperature is generally quite high during this period, commonly exceeding 35°C. High heating temperatures lead to further energy loss, and when the vehicle is driven, the temperature is high and requires cooling, resulting in additional energy consumption.

[0003] However, in related technologies, using a fixed strategy to limit the vehicle's heat preservation time results in poor heat preservation of the power battery. In some scenarios, it may also increase the power battery's power loss, reducing the power battery's driving range. Electric vehicles have a low low-temperature driving range retention rate, which makes it difficult to meet users' charging application needs in real-world scenarios, resulting in a poor user experience and low customer loyalty. These issues urgently need to be addressed. Summary of the Invention

[0004] This application provides a charging method, a battery management system, a vehicle, a storage medium, and a program product to solve the problems in related technologies, such as using a fixed strategy to limit the heat preservation time of the vehicle, resulting in poor heat preservation effect of the power battery, and in some scenarios, it may increase the power battery's power loss, reduce the power battery's driving range, and the low low-temperature driving range retention rate of electric vehicles, which makes it difficult to meet the charging application needs of users in real-world scenarios, resulting in a poor user experience and low customer loyalty.

[0005] The first aspect of this application provides a vehicle charging method, characterized by the following steps: obtaining the user's vehicle usage time and obtaining the charging parameters of the current charging device; calculating the remaining charging time of the vehicle based on the usage time, the charging parameters, and the actual remaining SOC, charging cutoff SOC, actual temperature, and maximum available capacity of the power battery; calculating the charging start time of the vehicle based on the remaining charging time, and determining whether the current time has reached the charging start time, wherein if the current time has reached the charging start time, the current charging device is controlled to charge the vehicle until charging is completed.

[0006] Through the above-mentioned technical means, the embodiments of this application can intelligently control the charging start time by setting the vehicle usage time and calculating the charging time, so as to ensure that the power battery power and power battery temperature meet the user's needs when the user uses the vehicle, avoid the power loss due to premature charging and heat preservation and cooling during driving, and solve the problems of low range retention rate of electric vehicles in low temperature.

[0007] Optionally, in one embodiment of this application, obtaining the user's vehicle usage time includes: receiving a setting instruction input by the user on a mobile terminal or vehicle charging, and determining the vehicle usage time based on the setting instruction; or, obtaining the user's vehicle usage habits, and extracting the vehicle usage time based on the vehicle usage habits.

[0008] Through the above-mentioned technical means, the embodiments of this application can extract the usage time according to the user's set instructions or the user's usage habits, which can meet the user's usage needs in different scenarios and effectively improve the intelligence level of this application and the user's user experience.

[0009] Optionally, in one embodiment of this application, the remaining charging time includes the power battery heating time and the charging time after the power battery is heated. The step of calculating the vehicle's remaining charging time based on the vehicle usage time, the charging parameters, and the power battery's actual remaining SOC, charging cutoff SOC, actual temperature, and maximum available capacity includes: calculating the vehicle's remaining charging time under low-temperature conditions based on the maximum available capacity, the charging parameters, and in conjunction with the power battery's battery heating cutoff temperature threshold, initial minimum battery temperature, average battery heating temperature rise rate, full charge, or the charging cutoff SOC and the initial power battery charge.

[0010] Through the above-mentioned technical means, the embodiments of this application can calculate the remaining charging time of a vehicle under low temperature conditions based on various data information, consider the charging scenarios in real life from the user's perspective, and calculate the effective remaining charging time that meets the actual charging scenarios, which helps to ensure the feasibility and application capability of actual charging control of the vehicle.

[0011] Optionally, in one embodiment of this application, before calculating the remaining charging time of the vehicle, the method further includes: detecting whether the vehicle meets the charging conditions corresponding to the automatic charging mode; and if the vehicle meets the charging conditions, controlling the vehicle to enter the automatic charging mode.

[0012] Through the above-mentioned technical means, the embodiments of this application can control the vehicle to enter the automatic charging mode when the vehicle meets the charging conditions, which simplifies the user's operation and improves the user experience. By detecting whether the vehicle meets the charging conditions corresponding to the automatic charging mode, it ensures that the vehicle can be automatically charged safely and efficiently.

[0013] Optionally, in one embodiment of this application, before determining whether the current time has reached the charging start time, the method further includes: if the current time has exceeded the charging start time, controlling the current charging device to charge the vehicle, and calculating the vehicle's uncharged SOC based on the current time and the charging start time; generating a not fully charged reminder for the vehicle based on the uncharged SOC, and sending the not fully charged reminder to the user, wherein the not fully charged reminder includes the waiting time for full charge.

[0014] Through the above-mentioned technical means, the embodiments of this application can remind users that the vehicle is not fully charged when it does not reach the expected or user-set power battery status. This allows users to understand the current vehicle battery status, avoid delays in their trip or other related matters, and also send the waiting time required for full charge to the user, so that the user can make appropriate decisions based on the actual situation. This effectively improves the user experience and helps maintain user stickiness.

[0015] A second aspect of this application provides a battery management system, comprising: an acquisition module for acquiring a user's vehicle usage time and acquiring the charging parameters of a current charging device; a calculation module for calculating the remaining charging time of the vehicle based on the usage time, the charging parameters, and the actual remaining SOC, charging cutoff SOC, actual temperature, and maximum available capacity of the power battery; and a first control module for calculating the charging start time of the vehicle based on the remaining charging time and determining whether the current time has reached the charging start time, wherein if the current time has reached the charging start time, the module controls the current charging device to charge the vehicle until charging is completed.

[0016] Through the above-mentioned technical means, the embodiments of this application can intelligently control the charging start time by calculating the charging time based on the user's vehicle usage time, ensuring that the power battery charge and power battery temperature meet the user's needs when the user uses the vehicle, avoiding the power loss due to premature charging and heat preservation and cooling during driving, and solving the problem of low range retention rate of electric vehicles in low temperature conditions.

[0017] Optionally, in one embodiment of this application, the acquisition module includes: a receiving unit, configured to receive a setting instruction input by the user on a mobile terminal or vehicle charging, and determine the vehicle usage time based on the setting instruction; and an extraction unit, configured to acquire the user's vehicle usage habits, and extract the vehicle usage time based on the vehicle usage habits.

[0018] Through the above-mentioned technical means, the embodiments of this application can extract the usage time according to the user's set instructions or the user's usage habits, which can meet the user's usage needs in different scenarios and effectively improve the intelligence level of this application and the user's user experience.

[0019] Optionally, in one embodiment of this application, the remaining charging time includes the power battery heating time and the charging time after the power battery is heated. The step of calculating the remaining charging time of the vehicle based on the vehicle usage time, the charging parameters, and the actual remaining SOC, charging cutoff SOC, actual temperature, and maximum available capacity of the power battery includes: a calculation unit, used to calculate the remaining charging time of the vehicle under low-temperature conditions based on the maximum available capacity, the charging parameters, and in conjunction with the power battery's battery heating cutoff temperature threshold, initial minimum battery temperature, average battery heating temperature rise rate, full charge, or the charging cutoff SOC and the initial power battery charge.

[0020] Through the above-mentioned technical means, the embodiments of this application can calculate the remaining charging time of a vehicle under low temperature conditions based on various data information, consider the charging scenarios in real life from the user's perspective, and calculate the effective remaining charging time that meets the actual charging scenarios, which helps to ensure the feasibility and application capability of actual charging control of the vehicle.

[0021] Optionally, in one embodiment of this application, it further includes: a detection module, configured to detect whether the vehicle meets the charging conditions corresponding to the automatic charging mode before calculating the remaining charging time of the vehicle; and a second control module, configured to control the vehicle to enter the automatic charging mode when the vehicle is detected to meet the charging conditions.

[0022] Through the above-mentioned technical means, the embodiments of this application can control the vehicle to enter the automatic charging mode when the vehicle meets the charging conditions, which simplifies the user's operation and improves the user experience. By detecting whether the vehicle meets the charging conditions corresponding to the automatic charging mode, it ensures that the vehicle can be automatically charged safely and efficiently.

[0023] Optionally, in one embodiment of this application, it further includes: a third control module, configured to control the current charging device to charge the vehicle if the current time has exceeded the charging start time before determining whether the current time has reached the charging start time, and to calculate the vehicle's uncharged SOC based on the current time and the charging start time; and a reminder module, configured to generate an uncharged reminder for the vehicle based on the uncharged SOC, and send the uncharged reminder to the user, wherein the uncharged reminder includes the waiting time for full charge.

[0024] Through the above-mentioned technical means, the embodiments of this application can remind users that the vehicle is not fully charged when it does not reach the expected or user-set power battery status. This allows users to understand the current vehicle battery status, avoid delays in their trip or other related matters, and also send the waiting time required for full charge to the user, so that the user can make appropriate decisions based on the actual situation. This effectively improves the user experience and helps maintain user stickiness.

[0025] A third aspect of this application provides a vehicle, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the charging method for the vehicle as described in the above embodiments.

[0026] A fourth aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the vehicle charging method described above.

[0027] A fifth aspect of this application provides a computer program product, including a computer program that, when executed, is used to implement the vehicle charging method described above.

[0028] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0029] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0030] Figure 1 This is a flowchart illustrating a vehicle charging method according to an embodiment of this application;

[0031] Figure 2 A flowchart illustrating a vehicle charging method according to an embodiment of this application;

[0032] Figure 3 This is a schematic diagram of the battery management system provided according to an embodiment of this application;

[0033] Figure 4 This is a structural schematic diagram of a vehicle provided according to an embodiment of this application.

[0034] Figure label:

[0035] 10-Battery Management System: 100-Acquisition Module, 200-Calculation Module and 300-First Control Module; 401-Memory, 402-Processor and 403-Communication Interface. Detailed Implementation

[0036] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0037] The following description, with reference to the accompanying drawings, outlines a charging method, battery management system, vehicle, storage medium, and application product according to embodiments of this application. Addressing the issues raised in the background section regarding related technologies where fixed strategies limit vehicle insulation time, resulting in poor battery insulation and potential additional battery power loss in certain scenarios, thus reducing battery range, low low-temperature range retention rates for electric vehicles, and difficulty in meeting user charging needs in real-world scenarios, leading to a poor user experience and low customer loyalty, this application provides a vehicle charging method. This method calculates the remaining charging time based on various data, and calculates the appropriate charging start time based on the user's vehicle usage time and charging duration, then initiates charging at that time. This achieves intelligent control of the charging start time based on user-set usage time and charging time calculations, ensuring that the battery power and temperature meet user needs during vehicle use, avoiding premature charging and subsequent power loss due to cooling during driving, improving user experience, and maintaining user loyalty. This solves the problems in related technologies, such as using fixed strategies to limit the vehicle's heat preservation time, resulting in poor heat preservation of the power battery, and potentially increasing the power battery's power loss in some scenarios, reducing the power battery's driving range, low low-temperature driving range retention rate of electric vehicles, difficulty in meeting users' charging application needs in real-world scenarios, poor user experience, and low customer loyalty.

[0038] Specifically, Figure 1 This is a flowchart illustrating a vehicle charging method provided in an embodiment of this application.

[0039] like Figure 1 As shown, the charging method for this vehicle includes the following steps:

[0040] In step S101, the user's vehicle usage time is obtained, and the charging parameters of the current charging device are obtained.

[0041] The charging process of a vehicle is generally controlled by the user, that is, the user starts or stops charging; in some more intelligent vehicles, the user can also set the charging start time and charging end time, etc., these methods mainly rely on user control.

[0042] In some embodiments, the driving range of electric vehicles varies due to weather conditions, especially in low temperatures, where the range may decrease. In such cases, users may struggle to determine the appropriate start and end times for charging: charging too early can lead to difficulty in effectively controlling the battery's heat preservation time after charging is complete. Since the heat preservation time is typically set to a fixed value based on big data, users cannot intervene in the setting. If the vehicle is used late, the heat preservation time may exceed the limit, causing the battery temperature to drop again. This results in poor heat preservation and some energy loss. Furthermore, the battery temperature is generally quite high during the heat preservation period, commonly exceeding 35°C. High heating temperatures lead to energy loss, and the vehicle's high temperature during driving requires cooling, consuming additional energy.

[0043] Therefore, the embodiments of this application can obtain the user's vehicle usage time and the current charging parameters of the charging equipment, so as to make certain controls on the user's charging process based on this information.

[0044] The usage time here can be understood as the user's expected next usage time after the current charging ends. Charging parameters for charging equipment generally include, but are not limited to, the following: Input voltage: AC charging piles typically use single-phase AC220V±10% or three-phase AC380V±15%, while DC charging piles usually use three-phase four-wire AC380V±15% input voltage; Output voltage: Commonly available are 48V, 72V, 144V, 200-420V, 500-650V, etc.; Output current: The output current varies depending on the charging pile's power and the electric vehicle's battery charging requirements, with common output currents including 20A, 25A, 30A, and 50A; Output power: The output power determines the charging speed of the charging pile. AC charging piles typically have a power of around 7KW, while DC charging piles offer multiple power levels such as 30KW, 60KW, 100KW, 150KW, and 200KW; Communication protocol: To achieve communication and data exchange with the electric vehicle, the charging pile needs to support the corresponding communication protocol. For example, the CAN communication protocol is one of the commonly used communication protocols in the electric vehicle field.

[0045] For example, after the user plugs in the charging gun, provided that the electric vehicle is fully connected to the charging station, the vehicle can obtain the charging parameters of the charging station, such as the maximum output current of the charging station, through CAN communication, and transmit these data to the battery management system (BMS) of the electric vehicle's power battery.

[0046] The embodiments of this application can obtain the user's vehicle usage time and the charging parameters of the charging equipment. By judging the charging capacity of the charging equipment through the charging parameters and combining them with the user's vehicle usage time, it is helpful to make better charging control strategies.

[0047] Optionally, in one embodiment of this application, obtaining the user's vehicle usage time includes: receiving a setting instruction input by the user on a mobile terminal or vehicle charging, and determining the vehicle usage time based on the setting instruction; or, obtaining the user's vehicle usage habits and extracting the vehicle usage time based on the vehicle usage habits.

[0048] In some embodiments, when obtaining a user's car usage time, it is possible, but not limited to, obtaining a pre-input instruction from the user's mobile terminal or vehicle, and obtaining the car usage time set by the user from the instruction. Furthermore, considering that some users may not have set an instruction, embodiments of this application can also extract the car usage time based on the user's car usage habits.

[0049] For example, users can pre-set their vehicle usage time on the vehicle's instrument panel or central control screen: XX days, XX hours, XX minutes; to avoid users setting it multiple times, usage time can also be set on a weekly cycle: 8:00 AM every Monday to Friday, etc. Then, the usage time can be sent to the battery management system (BMS) of the electric vehicle's power battery through the vehicle controller for easy access.

[0050] Additionally, considering that some users may forget to set their car usage time or exceed the set period, this application embodiment can also extract the car usage time based on the user's car usage habits. For example, if a user typically uses the car at 8:00 AM from Monday to Friday, does not use the car on Saturdays, and uses the car at 5:00 PM on weekends, the user's car usage time can also be extracted based on this typical car usage habit.

[0051] The embodiments of this application can extract the usage time according to the user's set instructions or the user's usage habits, which can meet the user's usage needs in different scenarios and effectively improve the intelligence level of this application and the user's user experience.

[0052] Step S102: Calculate the remaining charging time of the vehicle based on the usage time, charging parameters, actual remaining SOC of the power battery, charging cutoff SOC, actual temperature, and maximum available capacity.

[0053] It is understandable that the actual remaining SOC can be understood here as the actual ratio of the current remaining power battery charge to the current total capacity; the actual temperature can be understood here as the temperature of the environment in which the vehicle and power battery are located at this time; the maximum available capacity can be understood here as the basic battery parameter, which is obtained by the power battery pack charging test calibration; the charging cutoff SOC can be understood here as a specific state reached when the current power battery stops charging, at which point the charging process will stop or be limited.

[0054] It should be noted that the State of Charge (SOC) here can be understood as the battery state when the vehicle is fully charged, or as a battery state set by the user to indicate the end of charging. For example, the user can set the SOC to 100% by default, or set it according to driving distance, extending battery life, and ensuring battery safety, with a range of 50%-100%, adjustable in 5% increments. The specific choice or setting can be made by the user or a person skilled in the art based on actual circumstances; this is merely an illustrative example and does not impose any specific limitations.

[0055] In actual implementation, after obtaining the user's vehicle and charging equipment charging parameters, this embodiment of the application can calculate the remaining charging time of the electric vehicle based on the vehicle usage time, the charging equipment charging parameters, the actual remaining SOC of the power battery, the charging cutoff SOC, the actual temperature, and the maximum available capacity. The remaining charging time here can be understood as the time required for the vehicle's power battery to charge to its maximum available capacity or to reach a certain charging cutoff time or charging cutoff SOC set by the user.

[0056] The embodiments of this application can comprehensively calculate the remaining charging time of a vehicle based on various factors such as vehicle usage time, charging parameters, actual remaining SOC of the power battery, charging cutoff SOC, actual temperature, and maximum available capacity. This effectively ensures the accuracy of the calculated remaining charging time and provides strong data support for vehicle charging control.

[0057] Optionally, in one embodiment of this application, the remaining charging time includes the power battery heating time and the charging time after the power battery is heated. The remaining charging time of the vehicle is calculated based on the vehicle usage time, charging parameters, and the actual remaining SOC, charging cutoff SOC, actual temperature, and maximum available capacity of the power battery. This includes: calculating the remaining charging time of the vehicle under low temperature conditions based on the maximum available capacity, charging parameters, and in combination with the power battery heating cutoff temperature threshold, initial minimum battery temperature, average battery heating temperature rise rate, full charge or charging cutoff SOC, and the power battery charge at the start of charging.

[0058] Based on the descriptions of other embodiments, it is understood that after obtaining the user's vehicle usage time and charging parameters, the battery management system of the power battery can calculate the remaining charging time of the vehicle based on multiple information such as usage time, charging parameters, actual remaining SOC of the power battery, charging cutoff SOC, actual temperature, and maximum available capacity.

[0059] Since the power battery needs to be heated before actual charging begins in some low-temperature scenarios, the remaining charging time in this application embodiment includes, but is not limited to, the power battery heating time and the charging time after the power battery is heated.

[0060] Taking the remaining charging time of the power battery under low temperature conditions as an example, the remaining charging time of the vehicle under low temperature conditions can be calculated based on the current maximum available capacity of the power battery, the charging capacity of the charging equipment, the battery heating cutoff temperature threshold, the initial minimum battery temperature, the average temperature rise rate of the battery heating, the full charge or charging cutoff SOC, and the power battery charge at the start of charging.

[0061] Specifically, the formula for calculating the remaining charging time of a power battery under low-temperature conditions can be expressed as follows:

[0062] t 充电 =(T s -T0) / VT avg +(SOC t -SOC0)*C / I*60

[0063] Among them, t 充电 T represents the remaining charging time of the power battery under low-temperature conditions. s T0 represents the battery heating cutoff temperature threshold, in °C; T0 represents the initial minimum battery temperature, in °C; VT represents the minimum battery temperature. avg This indicates the average rate of temperature rise during battery heating, in °C / min, and SOC. t The SOC indicates the battery level at 100% or the charging cutoff point set by the user, in percentage. SOC0 indicates the initial SOC of the power battery, in percentage. C indicates the maximum usable battery capacity, in Ah. I indicates the charging capacity of the charging equipment, in A.

[0064] Battery heating cutoff temperature threshold T s It can be defined based on battery parameters and characteristics, but it is necessary to ensure that T... s At a certain temperature, the battery's maximum usable capacity can reach its maximum value or rated capacity (TBD). For example, the battery's heating cutoff temperature threshold T can be used as a reference. s Set to 25℃.

[0065] The initial minimum battery temperature T0 can be obtained, but is not limited to, by the battery management system of the power battery through the collection of temperatures from multiple temperature sensors arranged inside the battery pack, taking the minimum value.

[0066] Average temperature rise rate VT during battery heating avg Due to the influence of the actual charging current of the battery, the charging capacity of the charging equipment and the characteristics of the battery need to be calibrated according to the actual situation of the charging pile and the battery characteristics.

[0067] The charging cutoff SOC and maximum available capacity are explained as above.

[0068] This application embodiment can calculate the remaining charging time of a vehicle under low temperature conditions based on various data information. It considers real-life charging scenarios from the user's perspective and calculates the effective remaining charging time that meets the actual charging scenarios, which helps to ensure the feasibility and applicability of actual charging control of the vehicle.

[0069] Optionally, in one embodiment of this application, before calculating the remaining charging time of the vehicle, the method further includes: detecting whether the vehicle meets the charging conditions corresponding to the automatic charging mode; and if the vehicle meets the charging conditions, controlling the vehicle to enter the automatic charging mode.

[0070] As vehicles evolve and their intelligence levels reach a certain point, automatic charging can be activated under certain circumstances, greatly facilitating user experience. Therefore, this application embodiment can control the vehicle to enter automatic charging mode before calculating the remaining charging time, provided the vehicle meets the charging conditions.

[0071] In some embodiments, in order to determine whether the vehicle meets the charging conditions, the vehicle can be checked first, so that automatic charging will only be started when the vehicle meets the charging conditions corresponding to the automatic charging mode, thus preventing automatic charging from being started in some situations where charging is not possible or is unnecessary.

[0072] For example, the charging conditions corresponding to the automatic charging mode may include, but are not limited to, the following: the vehicle's low-voltage battery charge must be lower than the design value in order to trigger a charging request; the vehicle must be in a suitable charging state, such as with all four doors and two hoods closed and the vehicle in a non-driving state, to ensure the vehicle's charging safety; the vehicle's power battery must maintain a high charge level, such as greater than 30%, to ensure that it can replenish the low-voltage battery.

[0073] Furthermore, charging equipment also needs to meet certain charging conditions. For example, the automatic charging function of some electric vehicles depends on specific types of charging equipment, such as on-board chargers, off-board chargers, AC charging piles, or DC charging piles. These devices need to be compatible with the vehicle and able to meet the vehicle's charging needs. The charging equipment needs to be in normal working condition, without faults or damage, and have a stable connection to the power grid to ensure that it can provide a stable charging power supply.

[0074] Additionally, the vehicle and charging equipment can have some communication capabilities to transmit information such as charging requests and charging status, such as via wireless communication methods like Bluetooth, Wi-Fi, or dedicated communication protocols. Alternatively, the vehicle can be equipped with an intelligent control system, such as a vehicle control unit (VCU) or a battery management system (BMS), to achieve intelligent control of the charging process. These systems can monitor battery status, predict charging needs, and automatically adjust charging strategies.

[0075] Furthermore, the automatic charging process must ensure a certain level of safety, including preventing potential hazards such as battery overheating, overcharging, and short circuits. Therefore, charging equipment must possess corresponding safety protection measures, such as overcurrent protection, overvoltage protection, temperature monitoring, and appropriate protection measures for harsh environments, to ensure normal operation.

[0076] This application embodiment can control the vehicle to enter automatic charging mode when the vehicle meets the charging conditions, simplifying the user's operation and improving the user experience. By detecting whether the vehicle meets the charging conditions corresponding to the automatic charging mode, it ensures that the vehicle can be automatically charged safely and efficiently.

[0077] Step S103: Calculate the charging start time of the vehicle based on the remaining charging time, and determine whether the current time has reached the charging start time. If the current time has reached the charging start time, control the current charging device to charge the vehicle until charging is completed.

[0078] In other embodiments, if the vehicle meets certain charging conditions corresponding to an automatic charging mode, the automatic charging mode can be activated for the user, greatly simplifying the charging process. Furthermore, before activating automatic charging, the system can first calculate when the vehicle should start charging based on the calculated remaining charging time, and then control the charging equipment to charge the vehicle at the appropriate time until charging is complete.

[0079] For example, the charging start time T = t 用车 -t 充电 , t 用车 t represents the user's car usage time. 充电 Let t represent the charging time required. The remaining charging time for the vehicle is calculated to be four hours. If the user's vehicle usage time is 8:00 AM the following day, then the charging start time T for the vehicle's power battery is 4:00 AM the following day.

[0080] Once the charging start time corresponding to the vehicle is obtained, when the corresponding charging start time T is reached, the battery management system of the power battery can issue information such as charging demand, charging current command, and charging voltage command. After receiving the charging demand parameter information, the charging pile can start outputting current and voltage to heat and charge the power battery.

[0081] Until time t 用车The vehicle stops charging when the battery reaches 100% charge or the user-set State of Charge (SOC). When charging stops, the battery temperature is heated to the battery heating cutoff temperature threshold, such as 25°C, maximizing both usable and discharge capacity. This addresses the issue of low range retention in low-temperature driving conditions for electric vehicles. After unplugging the charging gun, users can use the vehicle according to the set schedule, eliminating unnecessary charging insulation and driving cooling. This avoids the energy loss associated with premature charging and cooling, reducing user operating costs.

[0082] This application embodiment can intelligently control the charging start time by calculating the charging time based on the user's vehicle usage time, ensuring that the power battery charge and temperature meet the user's needs when using the vehicle, avoiding power loss due to premature charging and cooling during driving, and solving the problem of low range retention rate of electric vehicles in low temperatures.

[0083] Optionally, in one embodiment of this application, before determining whether the current time has reached the charging start time, the method further includes: if the current time has exceeded the charging start time, controlling the current charging device to charge the vehicle, and calculating the vehicle's uncharged SOC based on the current time and the charging start time; generating a not fully charged reminder for the vehicle based on the uncharged SOC, and sending the not fully charged reminder to the user, wherein the not fully charged reminder includes the waiting time for full charge.

[0084] In actual operation, vehicle charging may encounter power outages or vehicle malfunctions, causing the vehicle to fail to initiate automatic charging when it should, and by the time it does, the optimal charging time has passed. In this situation, the actual charging state of the battery may not reach the user's desired or expected level, affecting driving range and other aspects. To avoid impacting user experience, this application embodiment can provide reminders to the user based on the actual condition of the vehicle's battery.

[0085] For example, if automatic charging should start at 1:00 AM, but due to a power outage, charging actually starts at 3:00 AM, the system calculates the vehicle's remaining SOC. For instance, if the user sets the charging cutoff SOC to 85% of full charge, and the actual SOC only reaches 75%, the remaining SOC is 10%. Once the remaining SOC is obtained, a notification can be sent to the user indicating that the battery is not fully charged. It should be noted that "not fully charged" here can refer to, but is not limited to, not reaching 100% SOC or the user-set SOC.

[0086] For example, a text reminder could be sent via the vehicle's central control screen or related communication terminal, such as "Current battery level is 85%, not yet 100%, please be careful during your trip"; or the message could be broadcast through the vehicle's speakers, such as "Current battery level is 85%, not yet 100%, please be careful during your trip".

[0087] Furthermore, considering that some users need to reach a certain battery state due to travel or other needs, or have time to continue charging, this application embodiment can also send the waiting time for full charge to the user when issuing a relevant not fully charged reminder, such as "Current battery level is 85%, not yet 100%, estimated to charge to 100% in 40 minutes", etc.

[0088] This application embodiment can remind the user that the vehicle is not fully charged when it has not reached the expected or user-set power battery status. This allows the user to understand the current vehicle battery status and avoid delays in the trip or other related matters. It can also send the waiting time required for full charge to the user, so that the user can make appropriate decisions based on the actual situation, such as continuing to charge to the expected or user-set power battery status, thereby improving the user experience and helping to maintain user stickiness.

[0089] The present application will be described in detail below with reference to a specific embodiment.

[0090] Figure 2 This is a flowchart illustrating a vehicle charging method according to one embodiment of this application. Figure 2 As shown:

[0091] Step S201: Connect the charging gun to the charging device.

[0092] In step S202, the user sets the vehicle usage time through the communication terminal or the central control screen. The vehicle transmits the user's usage time to the power battery management system. The system can obtain the user's usage time before charging. At the same time, it obtains the actual charging capacity of the charging equipment and calculates how long it will take to fully charge or charge to the charging cutoff SOC.

[0093] Step S203: Calculate the time when charging should be started based on the user's vehicle usage time and remaining charging time (the time required to fully charge or charge to the SOC cutoff point). For example, if the user's vehicle usage time is 8:00 AM the next day and the remaining charging time is four hours, then the charging time should be 4:00 AM the next day.

[0094] Step S204: When the charging start time is reached, such as 4:00 AM, charging begins.

[0095] Step S205: Determine whether the battery is fully charged or has reached the user-set charging cutoff SOC. If not, continue charging and determine the cutoff SOC again.

[0096] Step S206: Once fully charged or charged to the user-set SOC (State of Charge) limit, charging ends.

[0097] Step S207: Charging is started after the charging start time has been exceeded for some reason.

[0098] Step S208: If the battery is not fully charged or has not reached the user-set charging cutoff SOC, calculate that the SOC has not been reached. For example, if the charging start time is 4:00 AM, but the actual start time is 5:00 AM, the user-set charging cutoff SOC is 80%, but the actual charging SOC only reaches 75%.

[0099] Step S209 sends a reminder to the user that the battery is not fully charged (not charged to the user-set SOC) and the waiting time for full charge. This helps the user to understand the vehicle's battery status in a timely manner, avoid trip errors, and also allows them to choose whether to continue charging based on the actual situation.

[0100] The vehicle charging method proposed in this application can calculate the remaining charging time based on various data information, and calculate the appropriate charging start time based on the user's vehicle usage time and charging time, and then start charging at that appropriate time. This achieves intelligent control of the charging start time based on the user's set usage time and the calculation of charging time, ensuring that the power battery's charge and temperature meet the user's needs during vehicle use. It avoids premature charging and subsequent energy loss due to heat preservation and cooling during driving, improving the user experience and maintaining user loyalty. This solves the problems in related technologies where fixed strategies limit vehicle heat preservation time, resulting in poor heat preservation of the power battery and potential additional energy loss in some scenarios, reducing the power battery's range, low low-temperature range retention of electric vehicles, difficulty in meeting users' charging needs in real-world scenarios, poor user experience, and low customer loyalty.

[0101] Next, the battery management system proposed according to the embodiments of this application is described with reference to the accompanying drawings.

[0102] Figure 3 This is a schematic diagram of the battery management system according to an embodiment of this application.

[0103] like Figure 3 As shown, the battery management system 10 includes: an acquisition module 100, a calculation module 200, and a first control module 300.

[0104] The acquisition module 100 is used to acquire the user's vehicle usage time and the charging parameters of the current charging equipment.

[0105] The calculation module 200 is used to calculate the remaining charging time of the vehicle based on the vehicle usage time, charging parameters, and the actual remaining SOC, charging cutoff SOC, actual temperature, and maximum available capacity of the power battery.

[0106] The first control module 300 is used to calculate the charging start time of the vehicle based on the remaining charging time, and to determine whether the current time has reached the charging start time. If the current time has reached the charging start time, the module controls the current charging device to charge the vehicle until charging is completed.

[0107] Optionally, in one embodiment of this application, the acquisition module 100 includes a receiving unit and an extraction unit.

[0108] The receiving unit is used to receive setting instructions input by the user on the mobile terminal or vehicle charging, and to determine the vehicle usage time based on the settings.

[0109] The extraction unit is used to obtain the user's driving habits and extract the driving time based on the driving habits.

[0110] Optionally, in one embodiment of this application, the remaining charging time includes the power battery heating time and the charging time after the power battery is heated. The remaining charging time of the vehicle is calculated based on the vehicle usage time, charging parameters, and the actual remaining SOC, charging cutoff SOC, actual temperature, and maximum available capacity of the power battery, and includes a calculation unit.

[0111] The calculation unit is used to calculate the remaining charging time of the vehicle under low temperature conditions based on the maximum available capacity, charging parameters, battery heating cutoff temperature threshold, initial minimum battery temperature, average battery heating temperature rise rate, full charge or charging cutoff SOC, and the initial charge of the power battery.

[0112] Optionally, in one embodiment of this application, it further includes: a detection module and a second control module.

[0113] The detection module is used to detect whether the vehicle meets the charging conditions corresponding to the automatic charging mode before calculating the remaining charging time of the vehicle.

[0114] The second control module is used to control the vehicle to enter automatic charging mode when the vehicle is detected to meet the charging conditions.

[0115] Optionally, in one embodiment of this application, it further includes: a third control module and a reminder module.

[0116] The third control module is used to control the current charging device to charge the vehicle before determining whether the current time has reached the charging start time, and if the current time has exceeded the charging start time, and to calculate the vehicle's unreached SOC based on the current time and the charging start time.

[0117] The reminder module is used to generate a not fully charged reminder for the vehicle based on the fact that the SOC has not been reached, and send the not fully charged reminder to the user. The not fully charged reminder includes the waiting time for the vehicle to be fully charged.

[0118] It should be noted that the foregoing explanation of the vehicle charging method embodiment also applies to the battery management system of this embodiment, and will not be repeated here.

[0119] The battery management system proposed in this application can calculate the remaining charging time based on various data information, and calculate the appropriate charging start time based on the user's vehicle usage time and charging time, and then start charging at that time. This achieves intelligent control of the charging start time based on the user's set usage time and the calculation of charging time, ensuring that the battery charge and temperature meet the user's needs during vehicle use. It avoids premature charging and subsequent energy loss due to heat preservation and cooling during driving, improving the user experience and maintaining user loyalty. This solves the problems in related technologies where fixed strategies limit vehicle heat preservation time, resulting in poor heat preservation of the power battery, potential additional energy loss in some scenarios, reduced battery range, low low-temperature range retention of electric vehicles, difficulty in meeting user charging needs in real-world scenarios, poor user experience, and low customer loyalty.

[0120] Figure 4 A schematic diagram of the structure of a vehicle provided in an embodiment of this application. The vehicle may include:

[0121] The memory 401, the processor 402, and the computer program stored on the memory 401 and capable of running on the processor 402.

[0122] When the processor 402 executes the program, it implements the vehicle charging method provided in the above embodiments.

[0123] Furthermore, the vehicle also includes:

[0124] Communication interface 403 is used for communication between memory 401 and processor 402.

[0125] The memory 401 is used to store computer programs that can run on the processor 402.

[0126] The memory 401 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.

[0127] If the memory 401, processor 402, and communication interface 403 are implemented independently, then the communication interface 403, memory 401, and processor 402 can be interconnected via a bus to complete communication between them. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be divided into address buses, data buses, control buses, etc. For ease of representation, Figure 4 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0128] Optionally, in a specific implementation, if the memory 401, processor 402, and communication interface 403 are integrated on a single chip, then the memory 401, processor 402, and communication interface 403 can communicate with each other through an internal interface.

[0129] Processor 402 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application.

[0130] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the above-described vehicle charging method.

[0131] This application also provides a computer program product, including a computer program that can run computer instructions. When the computer instructions are executed by a processor, they implement the vehicle charging method provided in this application.

[0132] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0133] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0134] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or N executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0135] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0136] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, it can be implemented using any one or more of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0137] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0138] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0139] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A method for charging a vehicle, characterized in that, Includes the following steps: Obtain the user's vehicle usage time and the charging parameters of the current charging equipment; The remaining charging time of the vehicle is calculated based on the vehicle usage time, the charging parameters, the actual remaining SOC of the power battery, the charging cutoff SOC, the actual temperature, and the maximum available capacity. The charging start time of the vehicle is calculated based on the remaining charging time, and it is determined whether the current time has reached the charging start time. If the current time has reached the charging start time, the current charging device is controlled to charge the vehicle until charging is completed. Before determining whether the current time has reached the charging start time, the method further includes: if the current time has exceeded the charging start time, controlling the current charging device to charge the vehicle, and calculating the vehicle's uncharged SOC based on the current time and the charging start time; generating a not fully charged reminder for the vehicle based on the uncharged SOC, and sending the not fully charged reminder to the user, wherein the not fully charged reminder includes the waiting time for full charge; The SOC not reached is the difference between the charging cutoff SOC and the actual charging SOC.

2. The method according to claim 1, characterized in that, The acquisition of the user's car usage time includes: Receive the setting command input by the user on the mobile terminal or vehicle charging, and determine the vehicle usage time based on the setting command; Alternatively, the user's driving habits can be obtained, and the driving time can be extracted based on those habits.

3. The method according to claim 1, characterized in that, The remaining charging time includes the power battery heating time and the charging time after the power battery is heated. The calculation of the vehicle's remaining charging time based on the vehicle usage time, the charging parameters, and the power battery's actual remaining SOC, charging cutoff SOC, actual temperature, and maximum usable capacity includes: Based on the maximum available capacity, the charging parameters, and in conjunction with the battery heating cutoff temperature threshold, the initial minimum battery temperature, the average battery heating temperature rise rate, the full charge or the charging cutoff SOC, and the initial charge of the power battery, the remaining charging time of the vehicle under low temperature conditions is calculated.

4. The method according to claim 1, characterized in that, Before calculating the remaining charging time of the vehicle, the following is also included: Detect whether the vehicle meets the charging conditions corresponding to the automatic charging mode. If the vehicle is detected to meet the charging conditions, the vehicle is controlled to enter automatic charging mode.

5. A battery management system, characterized in that, include: The acquisition module is used to acquire the user's vehicle usage time and the charging parameters of the current charging equipment; The calculation module is used to calculate the remaining charging time of the vehicle based on the vehicle usage time, the charging parameters, and the actual remaining SOC, charging cutoff SOC, actual temperature, and maximum available capacity of the power battery. The control module is used to calculate the charging start time of the vehicle based on the remaining charging time, and to determine whether the current time has reached the charging start time. If the current time has reached the charging start time, the module controls the current charging device to charge the vehicle until charging is completed. Before determining whether the current time has reached the charging start time, the method further includes: if the current time has exceeded the charging start time, controlling the current charging device to charge the vehicle, and calculating the vehicle's uncharged SOC based on the current time and the charging start time; generating a not fully charged reminder for the vehicle based on the uncharged SOC, and sending the not fully charged reminder to the user, wherein the not fully charged reminder includes the waiting time for full charge; The SOC not reached is the difference between the charging cutoff SOC and the actual charging SOC.

6. The system according to claim 5, characterized in that, The acquisition module includes: A receiving unit is configured to receive a setting instruction input by the user on a mobile terminal or vehicle charging station, and determine the vehicle usage time based on the setting instruction. The extraction unit is used to obtain the user's car usage habits and extract the car usage time based on the car usage habits.

7. A vehicle, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the program to implement the charging method for a vehicle as described in any one of claims 1-4.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to implement the charging method for the vehicle as described in any one of claims 1-4.

9. A computer program product, comprising a computer program, characterized in that, When the computer program is executed, it is used to implement the charging method for the vehicle as described in any one of claims 1-4.

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