Intelligent charging control method of electric vehicle, storage medium and electric vehicle

Abstract

The application discloses an intelligent charging control method of an electric vehicle, a storage medium and the electric vehicle. The control method comprises the following steps: determining a charging connection state of the electric vehicle, wherein the charging connection state comprises a slow charging connection state, a fast charging connection state and a mixed charging connection state; determining a user vehicle use time, obtaining power battery information of the electric vehicle, and calculating a full charging time of the power battery according to the charging connection state and the power battery information; and intelligently charging the power battery according to the relationship between the user vehicle use time and the full charging time. The method can determine a reasonable electric vehicle charging mode according to the user vehicle use time and the charging connection state of the vehicle, reduce damage to the cycle life of the power battery while ensuring that the power battery reaches a full charging state, and improve the user vehicle use experience.

Description

Technical Field

[0001] This application relates to the field of electric vehicle technology, and more particularly to an intelligent charging control method, storage medium, and electric vehicle for electric vehicles. Background Technology

[0002] With the promotion of energy conservation and emission reduction in various countries, new energy electric vehicles have become a new development direction in the automotive industry. Electric vehicle charging has always been a recognized challenge and a bottleneck in the development of electric vehicles. Solving the charging problem can not only provide a better user experience but also better protect the battery pack and accelerate the development of electric vehicles. Currently, the main charging methods are: rechargeable charging, AC charging (slow charging), and DC charging (fast charging). For electric vehicle users, slow charging and fast charging are the more common charging methods.

[0003] Currently, more users choose fast charging when they need to quickly replenish power or when the charging time is short; and they choose slow charging when they use the vehicle less frequently and have more free time, such as at night. However, this type of electric vehicle has only one charging method. When using slow charging, the battery cannot meet the user's power needs before the user uses the vehicle. When using fast charging, it will reduce the lifespan of the power battery. It cannot meet the power needs of the vehicle while protecting the power battery from damage. Summary of the Invention

[0004] This application aims to at least partially address one of the technical problems in the related art.

[0005] Therefore, the first objective of this application is to propose an intelligent charging control method for electric vehicles. This method can determine a reasonable charging mode for the electric vehicle based on the user's usage time and the vehicle's charging connection status, ensuring that the power battery reaches a fully charged state while reducing damage to the power battery's cycle life and improving the user's driving experience.

[0006] The second objective of this application is to provide a computer-readable storage medium.

[0007] The third objective of this application is to propose an electric vehicle.

[0008] To achieve the above objectives, the first aspect of this application proposes an intelligent charging control method for electric vehicles, comprising: determining the charging connection state of the electric vehicle, wherein the charging connection state includes a slow charging connection state, a fast charging connection state, and a hybrid charging connection state; determining the user's vehicle usage time and obtaining the power battery information of the electric vehicle, and calculating the battery full-charge time based on the charging connection state and the power battery information; and intelligently charging the power battery based on the relationship between the user's vehicle usage time and the battery full-charge time.

[0009] According to the intelligent charging control method for electric vehicles in this embodiment, the charging mode of the electric vehicle can be determined by the user's vehicle usage time, the charging connection status of the electric vehicle, and the power battery information. This method can protect the power battery from damage as much as possible while meeting the electric vehicle's power demand, thereby improving the power battery's lifespan and the user's experience.

[0010] To achieve the above objectives, a computer-readable storage medium is provided in the second aspect of this application, on which an intelligent charging control program for an electric vehicle is stored. When executed by a processor, the intelligent charging control program for the electric vehicle implements the intelligent charging control method for an electric vehicle according to the first aspect of this application.

[0011] To achieve the above objectives, the electric vehicle proposed in the third aspect of this application includes a memory, a processor, and an intelligent charging control program for the electric vehicle stored in the memory and executable on the processor. When the processor executes the intelligent charging control program for the electric vehicle, it implements the intelligent charging control method for the electric vehicle according to the first aspect of this application.

[0012] 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

[0013] Figure 1 This is a flowchart of an intelligent charging control method for an electric vehicle according to an embodiment of this application;

[0014] Figure 2 This is a flowchart of an intelligent charging control method for an electric vehicle according to the first specific embodiment of this application;

[0015] Figure 3 This is a flowchart of an intelligent charging control method for an electric vehicle according to a second specific embodiment of this application;

[0016] Figure 4 This is a flowchart of an intelligent charging control method for an electric vehicle according to a third specific embodiment of this application;

[0017] Figure 5 This is a flowchart of an intelligent charging control method for an electric vehicle according to the fourth specific embodiment of this application. Detailed Implementation

[0018] 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.

[0019] The following is a reference appendix. Figure 1-5 This application describes an intelligent charging control method for an electric vehicle, a storage medium, and an electric vehicle according to embodiments of the present application.

[0020] Figure 1 This is a flowchart of an intelligent charging control method for an electric vehicle according to an embodiment of this application.

[0021] It should be noted that the intelligent charging control method for electric vehicles in this application embodiment can be turned on or off according to the user's needs. When turned on, the power battery of the electric vehicle is charged according to the intelligent charging control method. When turned off, the power battery of the electric vehicle is charged according to the conventional charging method.

[0022] like Figure 1 As shown, the intelligent charging control method for electric vehicles in this application embodiment may include the following steps:

[0023] S110, determine the charging connection status of the electric vehicle, wherein the charging connection status includes slow charging connection status, fast charging connection status and hybrid charging connection status.

[0024] Understandably, electric vehicles have two charging ports: one is a fast charging port (DC charging port), and the other is a slow charging port (AC charging port). When an electric vehicle is connected to a charging station, the charging connection status of the electric vehicle can be determined by detecting the status of the terminals of the charging port.

[0025] For example, when the slow charging port of an electric vehicle is connected to the slow charging gun of a charging station, the electric vehicle is in a slow charging connection state; when the fast charging port of an electric vehicle is connected to the fast charging gun of a charging station, the electric vehicle is in a fast charging state; when the slow charging port and the fast charging port and the fast charging gun of an electric vehicle are connected at the same time, the electric vehicle is in a hybrid charging connection state.

[0026] S120 determines the user's vehicle usage time, obtains the electric vehicle's power battery information, and calculates the battery's full charging time based on the charging connection status and power battery information.

[0027] Optionally, the user's vehicle usage time refers to the user's vehicle usage time during this charging period. The power battery information of the electric vehicle may include information such as the current SOC (the percentage of remaining usable battery capacity), temperature, and materials of the power battery.

[0028] Specifically, when the electric vehicle is in a slow charging connection state, the time required for a full slow charge is calculated based on the power battery information; when the electric vehicle is in a fast charging connection state, the time required for a full fast charge is calculated based on the power battery information; when the electric vehicle is in a hybrid charging connection state, the time required for both slow and fast charging is calculated based on the power battery information.

[0029] The S130 intelligently charges the power battery based on the relationship between the user's vehicle usage time and the battery's full charging time.

[0030] Specifically, after determining the user's vehicle usage time, the charging time of the electric vehicle before the user uses the vehicle is calculated based on the current time. Based on the battery full charge time determined according to the charging connection status of the electric vehicle, a charging method is selected within the charging time range of the electric vehicle that can maximize the SOC of the electric vehicle's power battery and protect the power battery from damage.

[0031] Understandably, when using AC charging (slow charging), the current is relatively small, generally below 20A, resulting in low charging efficiency and a long charging time, typically exceeding 6 hours for a full charge, making it difficult to meet urgent energy replenishment needs. Conversely, when using DC charging (fast charging), the charging current is much larger, generally exceeding 150A, leading to higher charging efficiency and faster charging time. However, the significant current surge to the battery pack reduces its cycle life. In this embodiment, by selecting a suitable charging method, the battery's state of charge (SOC) is sufficiently increased before the user uses the vehicle, while simultaneously protecting battery quality.

[0032] According to the intelligent charging control method for electric vehicles in this embodiment, the charging mode of the electric vehicle is determined by the user's vehicle usage time, the charging connection status of the electric vehicle, and the power battery information. This method can protect the power battery from damage as much as possible while meeting the electric vehicle's power demand, thereby improving the power battery's lifespan and the user's experience.

[0033] As one possible implementation method, Figure 2 This is a flowchart of an intelligent charging control method for an electric vehicle according to the first specific embodiment of this application, as follows: Figure 2 As shown, when the charging connection status is slow charging, the battery full charging time is calculated based on the charging connection status and power battery information, including the following steps:

[0034] S210 determines the slow charging MAP and obtains the current SOC and current battery temperature of the power battery.

[0035] Specifically, when only a slow charging gun is connected to the vehicle, the entire vehicle system enters the intelligent slow charging mode, and the vehicle charges according to the slow charging MAP to obtain the current power battery SOC and battery temperature.

[0036] It's understandable that batteries exhibit different performance at different temperatures. At lower temperatures, battery activity decreases, and the charging rate slows down. Under the same state of charge (SOC) conditions, a full charge takes longer at lower temperatures than at higher temperatures.

[0037] S220 calculates the first full charge time for the power battery to be slowly charged to full charge based on the slow charge MAP, current SOC, and current battery temperature.

[0038] Understandably, MAP is an indispensable reference standard in the charging process of power batteries. MAP represents the conversion rate of charging current under different states of charge and different temperature conditions. In this embodiment, the first battery slow charging time required to fully charge the power battery can be calculated based on the slow charging MAP, the power battery SOC, and the current battery temperature value.

[0039] As one possible implementation, when the charging connection is in a slow charging connection state, intelligent charging of the power battery based on the relationship between the user's vehicle usage time and the battery's full charging time also includes the following steps:

[0040] S201, in T 慢充满充1 ≥TT now -T 容错时间 At that time, the power battery is controlled to slowly charge according to the slow charging MAP until the power battery's SOC reaches the preset full charge threshold or the user stops charging the power battery. Among them, T 慢充满充1 T represents the first full charge time of the battery, and T represents the user's vehicle usage time. now T represents the current time. 容错时间 This is the preset fault tolerance time.

[0041] Specifically, in T 慢充满充1 ≥TT now -T 容错时间 When the slow charging time exceeds the vehicle's charging time before the user uses the vehicle, meaning the vehicle won't be fully charged before the user uses it, the slow charging contactor will immediately close, and the vehicle will charge according to the slow charging MAP until the battery's SOC reaches the preset full charge threshold or the user disconnects the slow charging gun. The preset full charge threshold can be 100% of the battery's SOC, or it can be set according to battery characteristics or actual needs.

[0042] Understandably, considering that user usage time is a fluctuating range rather than an exact time, a preset error tolerance time T is added. 容错时间 This takes into account the errors in user driving time and the errors in user driving time calculated from big data, as well as the error factors caused by SOC calculation accuracy and temperature changes, to ensure that the power battery capacity can reach the maximum capacity state or the fully charged state before the user uses the vehicle. For example, under the condition that the user's working time is relatively stable, T 容错时间 The value of T can be relatively small; when the user's working hours fluctuate significantly, T... 容错时间 The value can be relatively large. For example, if a user uses the car half an hour in advance, without setting a time tolerance, the battery may not be in optimal condition when the user uses the car. However, if a time tolerance of 1 hour is set, the user's usage time variation can be covered.

[0043] S202, in T 慢充满充1 <T-T now -T 容错时间 At the same time, the system controls the power battery to charge slowly according to the slow charging MAP, and stops charging when the power battery's SOC reaches the first preset charge threshold. It also calculates the first remaining charging time T when the power battery reaches the preset full charge threshold based on the slow charging MAP, the current SOC, and the current battery temperature. 慢充满充剩余1 and in T 慢充满充剩余1 =TT now -T 容错时间 At that time, the power battery is controlled to continue slow charging according to the slow charging MAP, wherein the first preset power threshold is less than the preset full power threshold.

[0044] Specifically, when in T 慢充满充1 <T-T now -T 容错时间 When the time required for a full slow charge is less than the vehicle's charging time before the user uses it, meaning the vehicle can reach a full charge using slow charging before the user uses it, the slow charging contactor is closed, and the vehicle charges according to the slow charging MAP until the battery's SOC reaches the first preset charge threshold, at which point charging stops, and the slow charging contactor is opened. Simultaneously, based on the slow charging MAP, the current SOC, and the current battery temperature, the remaining charging time T when the battery reaches the preset full charge threshold is calculated. 慢充满充剩余1 When the remaining time T 慢充满充剩余1 When the charging time equals the time before the user uses the vehicle, the slow charging contactor continues to close, and the power battery continues to be slowly charged according to the slow charging MAP until the power battery's SOC reaches the preset full charge threshold or the user unplugs the slow charging gun, at which point charging stops.

[0045] Optionally, the first preset threshold can be 80% of the power battery SOC, or it can be set according to actual needs.

[0046] It is understandable that frequent overcharging will have a certain impact on battery life. When charging the power battery of an electric vehicle, controlling the start and stop of charging based on user usage time and full charge time can effectively prevent overcharging before the user uses the vehicle, while ensuring that the vehicle has sufficient power and effectively extending the life of the power battery.

[0047] As one possible implementation method, Figure 3 This is a flowchart of an intelligent charging control method for an electric vehicle according to a second specific embodiment of this application, as shown below. Figure 3 As shown, when the charging connection status is fast charging connection status, the battery full charge time is calculated based on the charging connection status and power battery information, including:

[0048] S310 determines the fast charging MAP and obtains the current SOC and current battery temperature of the power battery.

[0049] S320 calculates the full charging time of the second battery to fast charge the power battery to a full state based on the fast charging MAP, current SOC, and current battery temperature.

[0050] Specifically, when the vehicle is in fast charging connection mode, the power battery is charged according to the fast charging MAP, and the second battery full charging time required for the power battery to be fully charged is calculated based on the fast charging MAP, the current SOC and the current battery temperature.

[0051] As one possible implementation, intelligent charging of the power battery is performed based on the relationship between user vehicle usage time and battery full charging time, including the following steps:

[0052] S301, in T 快充满充1 ≥TT now -T 容错时间 At that time, the power battery is controlled to fast charge according to the fast charging MAP until the power battery's SOC reaches the preset full charge threshold or the user stops charging the power battery. Among them, T 快充满充1 T represents the time it takes for the second battery to fully charge, and T represents the user's vehicle usage time. now T represents the current time. 容错时间 This is the preset fault tolerance time.

[0053] Specifically, when in T 快充满充1 ≥TT now -T 容错时间When the charging time is greater than the charging time of the vehicle before the user uses it, it means that the vehicle cannot reach a full charge state by fast charging before the user uses it. In this case, the fast charging contactor will be closed immediately and the vehicle will be charged according to the fast charging MAP until the SOC of the power battery reaches the preset full charge battery threshold or the user unplugs the fast charging gun.

[0054] S302, in T 快充满充1 <T-T now -T 容错时间 At the same time, the system controls the power battery to fast charge according to the fast charging MAP, and stops charging when the power battery's SOC reaches the second preset power threshold. It also calculates the second remaining charging time T when the power battery reaches the preset full charge threshold based on the fast charging MAP, the current SOC, and the current battery temperature. 快充满充剩余1 and in T 快充满充剩余1 =TT now -T 容错时间 At that time, the power battery is controlled to continue fast charging according to the fast charging MAP, wherein the second preset power threshold is less than the preset full power threshold.

[0055] Specifically, when T 快充满充1 <T-T now -T 容错时间 When the charging time is less than the vehicle's charging time before the user uses the vehicle, it means the vehicle can reach a full charge using fast charging before the user uses it. By closing the fast charging contactor, the vehicle charges according to the fast charging MAP until the battery's SOC reaches the second preset charge threshold. Then, by opening the fast charging contactor, charging stops. Simultaneously, the remaining charging time T when the battery reaches the preset full charge threshold is calculated based on the fast charging MAP, the current SOC, and the current battery temperature. 快充满充剩余1 and in T 快充满充剩余1 =TT now -T 容错时间 When the remaining time required for the power battery to be fully charged is the same as the charging time before the user uses the vehicle, the power battery will continue to be charged according to the fast charging MAP until the power battery is fully charged or the user unplugs the charging gun, then charging will stop.

[0056] Optionally, the second preset threshold can be 80% of the power battery SOC, and the preset full charge threshold can be 100% of the power battery SOC, or it can be set according to the battery characteristics or actual needs.

[0057] As one possible implementation method, Figure 4 This is a flowchart of an intelligent charging control method for an electric vehicle according to a third specific embodiment of this application, as shown below. Figure 4As shown, when the charging connection status is a hybrid charging connection status, calculating the battery full charge time based on the charging connection status and power battery information may include the following steps:

[0058] S410 determines the slow charging MAP and fast charging MAP, and obtains the current SOC and current battery temperature of the power battery.

[0059] Specifically, when the fast charging port of the electric vehicle is connected to the fast charging gun of the charging pile, and the slow charging port is connected to the slow charging gun of the charging pile, the electric vehicle is in a hybrid connection state and obtains the current SOC and temperature information of the power battery.

[0060] S420 calculates the first battery full charge time for slow charging to full charge based on the slow charging MAP, current SOC, and current battery temperature, and calculates the second battery full charge time for fast charging to full charge based on the fast charging MAP, current SOC, and current battery temperature.

[0061] Specifically, after determining the charging status of the electric vehicle, the time required for slow charging and fast charging is determined based on the slow charging MAP, fast charging MAP, and current power battery information.

[0062] As one possible implementation, when the electric vehicle is in a hybrid connected state, intelligent charging of the power battery based on the relationship between user usage time and battery full charging time may also include the following steps:

[0063] S401, in T 慢充满充1 <T-T now -T 容错时间 At the same time, the system controls the power battery to charge slowly according to the slow charging MAP, and stops charging when the power battery's SOC reaches the first preset charge threshold. It also calculates the first remaining charging time T when the power battery reaches the preset full charge threshold based on the slow charging MAP, the current SOC, and the current battery temperature. 慢充满充剩余1 and in T 慢充满充剩余1 =TT now -T 容错时间 At that time, the power battery is controlled to continue slow charging according to the slow charging MAP, wherein the first preset charge threshold is less than the preset full charge threshold, T 慢充满充1 T represents the first full charge time of the battery, and T represents the user's vehicle usage time. now T represents the current time. 容错时间 This is the preset fault tolerance time.

[0064] Specifically, when T 慢充满充1 <T-T now -T 容错时间When the time required for a full charge is less than the charging time of the electric vehicle before the user uses the vehicle, it means that the vehicle can be fully charged before the user uses the vehicle using only slow charging. Considering the protection of the vehicle's power battery, the slow charging contactor is closed, and only slow charging is used to charge the electric vehicle's power battery until the power battery's SOC reaches the first preset threshold. At the same time, the first remaining charging time required for the power battery's SOC to reach the preset full charge threshold is calculated. When the first remaining charging time is equal to the charging time of the electric vehicle before the user uses the vehicle, the vehicle continues to be controlled to charge according to the slow charging MAP until the power battery's SOC reaches the slow charging preset threshold or the user unplugs the charging gun.

[0065] S402, in T 快充满充1 ≥TT now -T 容错时间 At that time, the power battery is controlled to fast charge according to the fast charging MAP until the power battery's SOC reaches the preset full charge threshold or the user stops charging the power battery. Among them, T 快充满充1 This refers to the time it takes for the second battery to fully charge.

[0066] Specifically, when T 快充满充1 ≥TT now -T 容错时间 When the charging time is greater than or equal to the charging time of the electric vehicle before the user uses the vehicle, it means that the electric vehicle still cannot meet the full charging requirement even through fast charging. At this time, the fast charging contactor is closed to control the power battery to fast charge according to the fast charging MAP. The electric vehicle is only charged through fast charging until the power battery SOC reaches the preset full charge threshold or the user unplugs the charging gun to stop charging.

[0067] S403, in T 快充满充1 <TT now -T 容错时间 ≤T 慢充满充1 At that time, the power battery was calculated in TT. now -T 容错时间 The fast charging time T to reach the preset full battery threshold 快充 and slow charging time T 慢充 It controls the power battery to fast charge according to the fast charging MAP until the power battery fast charging time reaches the fast charging time T. 快充 When the power battery is switched to slow charging according to the slow charging MAP, it will continue to charge until the power battery's SOC reaches the preset full charge threshold or the user stops charging the power battery.

[0068] Specifically, when T 快充满充1 <TT now -T 容错时间 ≤T 慢充满充1This indicates that the charging time of the vehicle before the user uses it is between the time required for a full charge using only fast charging and the time required for a full charge using only slow charging. In other words, a full charge can be achieved through fast charging, but not through slow charging alone. Taking into account factors such as ensuring the power battery is at full charge and reducing the damage to the power battery's cycle life caused by high-current charging, a method of fast charging followed by slow charging is adopted to ensure that the power battery is at full charge before the user uses the vehicle.

[0069] For example, the fast charging T can be calculated using the ampere-hour integration method. 快充 and Full Charge T 慢充 The required time is determined by controlling the power battery to first use time T. 快充 Fast charging is performed, and then the power battery is controlled to operate at a time T. 慢充 Slow charging will continue until the battery's SOC reaches the preset full charge threshold before the user uses the vehicle. When the battery capacity reaches its maximum, i.e., the battery SOC reaches 100%, T... 快充 and T 慢充 Satisfy the following formula:

[0070]

[0071] Among them, T 快充 Indicates the time required for fast charging, T 慢充 T indicates the time required for slow charging. 快充 +T 慢充 =TT now -T 容错时间 SOC now Q represents the current capacity of the power battery. max Indicates the maximum usable capacity of the power battery, I 快充 Indicates the fast charging current MAP, I 慢充 This represents the slow charging current MAP.

[0072] As one possible implementation method, Figure 5 This is a flowchart of an intelligent charging control method for an electric vehicle according to a fourth specific embodiment of this application, as shown below. Figure 5 As shown, determining a user's vehicle usage time may also include the following steps:

[0073] S510 obtains the user's driving habits when it does not receive instructions on setting or defaulting driving times.

[0074] S520 determines the user's driving time based on the user's driving habits.

[0075] For example, the electric vehicle and the user's mobile terminal can communicate with each other. The user can charge the vehicle by turning on the smart charging function through the smart charging control method of this embodiment. When the user turns on the smart charging function, the system can remind the user to enter the default usage time, whether to record the user's usage habits and the current usage time, and remind the user whether the usage time is based on the default usage time set by the user or the user's usage time extracted from the user's usage habits based on big data if the user does not enter the usage time.

[0076] For example, after a user activates the smart charging function, the system prompts the user via mobile terminal to enter a default usage time (charging deadline), asks the user whether to record the current usage time, and inquires whether to collect the user's usage habits. With the user's permission, the system collects the user's charging and usage times each time to extract the user's frequently used driving time periods as the user's driving habits. If the user does not enter a usage time, the system sends a reminder message to the user via mobile terminal, reminding the user whether to use the previously set default usage time or the user's frequently used driving time periods extracted from big data for this charging session.

[0077] According to the intelligent charging control method for electric vehicles in this embodiment, by understanding user driving habits through big data or by users directly setting their driving needs, an accurate and reasonable charging solution is provided, thereby improving user experience and increasing the service life of the power battery.

[0078] Optionally, user usage habits can be obtained by acquiring the user's historical charging records.

[0079] To implement the above embodiments, this application also proposes a computer-readable storage medium storing an intelligent charging control program for an electric vehicle, which, when executed by a processor, implements the intelligent charging control method for an electric vehicle as described in any of the above embodiments of this application.

[0080] To implement the above embodiments, this application also proposes an electric vehicle, including a memory, a processor, and an intelligent charging control program for the electric vehicle stored in the memory and executable on the processor. When the processor executes the intelligent charging control program for the electric vehicle, it implements the intelligent charging control method for the electric vehicle according to any of the above embodiments of this application.

[0081] Furthermore, other components and functions of the electric vehicle in the embodiments of this application are known to those skilled in the art, and will not be described in detail here to reduce redundancy.

[0082] It should be noted that 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, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0083] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination 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.

[0084] 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.

[0085] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0086] Furthermore, the terms "first," "second," etc., used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance, or implicitly specifying the number of technical features indicated in this embodiment. Therefore, features defined with terms such as "first" and "second" in the embodiments of this application can explicitly or implicitly indicate that the embodiment includes at least one of those features. In the description of this application, the word "multiple" means at least two or more, such as two, three, four, etc., unless otherwise explicitly and specifically defined in the embodiments.

[0087] In this application, unless otherwise explicitly specified or limited in the embodiments, the terms "installation," "connection," "joining," and "fixing" appearing in the embodiments should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral part; it can also be a mechanical connection, an electrical connection, etc. Of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication between two components, or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific implementation.

[0088] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0089] 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 smart charging control method for electric vehicles, characterized in that, include: Determine the charging connection status of the electric vehicle, wherein the charging connection status includes slow charging connection status, fast charging connection status, and hybrid charging connection status; Determine the user's vehicle usage time, obtain the power battery information of the electric vehicle, and calculate the battery full charge time based on the charging connection status and the power battery information; The power battery is intelligently charged based on the relationship between the user's vehicle usage time and the battery's full charging time. When the charging connection state is the hybrid charging connection state, the battery full charge time is calculated based on the charging connection state and the power battery information, including: Determine the slow charging MAP and fast charging MAP, and obtain the current SOC and current battery temperature of the power battery information; The first full charge time for the power battery to be slowly charged to full charge is calculated based on the slow charge MAP, the current SOC, and the current battery temperature; and the second full charge time for the power battery to be fast charged to full charge is calculated based on the fast charge MAP, the current SOC, and the current battery temperature. Intelligent charging of the power battery based on the relationship between the user's vehicle usage time and the battery's full charge time includes: In T 慢充满充1 <T-T now -T 容错时间 At the same time, the system controls the power battery to perform slow charging according to the slow charging MAP, and when the state of charge (SOC) of the power battery reaches a first preset power threshold, the system controls the power battery to stop charging, and calculates the first remaining charging time T when the power battery reaches the preset full charge threshold based on the slow charging MAP, the current SOC, and the current battery temperature. 慢充满充剩余1 and in T 慢充满充剩余1 =TT now -T 容错时间 At that time, the power battery is controlled to continue slow charging according to the slow charging MAP, wherein the first preset power threshold is less than the preset full power threshold, T 慢充满充1 T represents the full charging time of the first battery, and T represents the user's vehicle usage time. now T represents the current time. 容错时间 This is the preset fault tolerance time; In T 快充满充1 ≥TT now -T 容错时间 At that time, the power battery is controlled to fast charge according to the fast charging MAP until the state of charge (SOC) of the power battery reaches the preset full charge threshold or the user stops the charging of the power battery, wherein T 快充满充1 This refers to the full charge time of the second battery; In T 快充满充1 <TT now -T 容错时间 ≤T 慢充满充1 At that time, the power battery is calculated at TT. now -T 容错时间 The fast charging time T to reach the preset full battery threshold 快充 and slow charging time T 慢充 The system controls the power battery to fast charge according to the fast charging MAP until the fast charging time T is reached. 快充 When the power battery is switched to slow charging according to the slow charging MAP, the power battery's SOC reaches the preset full charge threshold or the user stops charging the power battery.

2. The intelligent charging control method for electric vehicles according to claim 1, characterized in that, When the charging connection state is the slow charging connection state, the battery full charging time is calculated based on the charging connection state and the power battery information, including: Determine the slow charging MAP and obtain the current SOC and current battery temperature of the power battery; The first full charge time for the power battery to be slowly charged to full charge is calculated based on the slow charge MAP, the current SOC, and the current battery temperature.

3. The intelligent charging control method for electric vehicles according to claim 2, characterized in that, Intelligent charging of the power battery based on the relationship between the user's vehicle usage time and the battery's full charge time includes: In T 慢充满充1 ≥TT now -T 容错时间 At that time, the power battery is controlled to slowly charge according to the slow charging MAP until the SOC of the power battery reaches the preset full charge threshold or the user stops the charging of the power battery, wherein T 慢充满充1 T represents the full charging time of the first battery, and T represents the user's vehicle usage time. now T represents the current time. 容错时间 This is the preset fault tolerance time; In T 慢充满充1 <T-T now -T 容错时间 At the same time, the system controls the power battery to perform slow charging according to the slow charging MAP, and when the state of charge (SOC) of the power battery reaches a first preset power threshold, the system controls the power battery to stop charging, and calculates the first remaining charging time T when the power battery reaches the preset full charge threshold based on the slow charging MAP, the current SOC, and the current battery temperature. 慢充满充剩余1 and in T 慢充满充剩余1 =TT now -T 容错时间 At that time, the power battery is controlled to continue slow charging according to the slow charging MAP, wherein the first preset power threshold is less than the preset full power threshold.

4. The intelligent charging control method for electric vehicles according to claim 1, characterized in that, When the charging connection state is the fast charging connection state, the battery full charge time is calculated based on the charging connection state and the power battery information, including: Determine the fast charging MAP and obtain the current SOC and current battery temperature of the power battery; The full charging time of the second battery to a fully charged state is calculated based on the fast charging MAP, the current SOC, and the current battery temperature.

5. The intelligent charging control method for electric vehicles according to claim 4, characterized in that, Intelligent charging of the power battery based on the relationship between the user's vehicle usage time and the battery's full charge time includes: In T 快充满充1 ≥TT now -T 容错时间 At that time, the power battery is controlled to fast charge according to the fast charging MAP until the state of charge (SOC) of the power battery reaches the preset full charge threshold or the user stops the charging of the power battery, wherein T 快充满充1 T represents the full charging time of the second battery, and T represents the user's vehicle usage time. now T represents the current time. 容错时间 This is the preset fault tolerance time; In T 快充满充1 <T-T now -T 容错时间 The system controls the power battery to fast charge according to the fast charging MAP, and controls the power battery to stop charging when the SOC of the power battery reaches the second preset power threshold. It also calculates the second remaining charging time T when the power battery reaches the preset full charge threshold based on the fast charging MAP, the current SOC, and the current battery temperature. 快充满充剩余1 and in T 快充满充剩余1 =TT now -T 容错时间 At that time, the power battery is controlled to continue fast charging according to the fast charging MAP, wherein the second preset power threshold is less than the preset full power threshold.

6. The intelligent charging control method for electric vehicles according to any one of claims 1-5, characterized in that, Determine the user's vehicle usage time, including: When no instructions for setting or defaulting usage time are received, the user's usage habits are obtained. The user's car usage time is determined based on the user's car usage habits.

7. A computer-readable storage medium, characterized in that, It stores an intelligent charging control program for electric vehicles, which, when executed by a processor, implements the intelligent charging control method for electric vehicles according to any one of claims 1-6.

8. An electric vehicle, characterized in that, The device includes a memory, a processor, and an intelligent charging control program for an electric vehicle stored in the memory and executable on the processor. When the processor executes the intelligent charging control program for the electric vehicle, it implements the intelligent charging control method for an electric vehicle according to any one of claims 1-6.

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