A charging control method and system for electric vehicles

Abstract

This invention discloses a charging control method and system for electric vehicles, belonging to the field of intelligent vehicle technology. The method includes: determining whether the charging cutoff SOC command information set by the instrument panel is valid and its relationship with the charging threshold to obtain the vehicle controller charging cutoff SOC under different conditions; and comparing it with the actual SOC of the battery to determine whether the vehicle controller should continue charging after the charging cutoff SOC. This effectively avoids the vehicle system repeatedly entering the charging / charging-off cycle due to rapid battery depletion as indicated by the instrument panel. Moreover, this invention is easy to implement, requires no complex programming, and can effectively improve battery life and health, making charging safer, thereby reducing vehicle operating costs, ensuring the stability of electric vehicles, and enhancing the driving experience and safety of electric vehicles.

Description

Technical Field

[0001] This invention belongs to the field of intelligent vehicle technology and relates to a charging control method and system for electric vehicles. Background Technology

[0002] With the changing times, electric vehicles are gradually entering the public eye. Due to their advantages such as cleanliness, environmental friendliness, and low noise, electric vehicles are bound to become the mainstream means of transportation in the future. At the same time, the energy storage of electric vehicle batteries has also become a focus of discussion. Therefore, how to manage the charging of electric vehicles and improve battery life has become an important research topic. Among them, the state of charge (SOC) is an important parameter that indicates the remaining power of the battery pack. The accuracy of SOC estimation directly affects the performance of electric vehicles. Existing electric vehicles stop charging when the set cutoff SOC is reached, but the instrument panel shows that the SOC drops quickly, and electric vehicles charge frequently, affecting the customer's charging experience. Summary of the Invention

[0003] The purpose of this invention is to solve the problems in the prior art where the instrument panel displays a rapid loss of SOC, electric vehicles frequently prompt for charging, and the display does not reflect the actual battery level. This invention provides a charging control method and system for electric vehicles.

[0004] To achieve the above objectives, the present invention employs the following technical solution:

[0005] The present invention proposes a charging control method for electric vehicles, comprising:

[0006] Receive instruction information based on the charging cutoff SOC set by the instrument;

[0007] Based on the set charging cutoff SOC command information, determine whether the charging cutoff SOC command information is valid and its relationship with the charging threshold, and obtain the vehicle controller charging cutoff SOC under different conditions;

[0008] The vehicle controller's state of charge cutoff (SOC) under different conditions is compared with the battery's actual SOC to determine whether charging should continue after the vehicle controller's SOC cutoff.

[0009] Once the vehicle controller reaches its State of Charge (SOC) threshold, the battery continues to discharge. The system then determines whether the battery meets the conditions for recharging after discharge. If it does, the vehicle controller begins charging; otherwise, it does not.

[0010] Preferably, the determination of the validity of the charging cutoff SOC instruction information and its relationship with the charging threshold specifically involves: if the set charging cutoff SOC instruction information is deemed invalid, then the vehicle controller charging cutoff SOC under the invalid charging cutoff SOC condition is obtained; if valid, then it is further determined whether the charging cutoff SOC is greater than the charging threshold; if less than, then the vehicle controller charging cutoff SOC under the condition that the charging cutoff SOC is less than the charging threshold is obtained; if greater than, then based on the set charging cutoff SOC, the vehicle controller charging cutoff SOC under the condition that the charging cutoff SOC is greater than the charging threshold is obtained.

[0011] Preferably, if the command information for setting the charging cutoff SOC is determined to be invalid, the vehicle controller charging cutoff SOC under the condition of invalid charging cutoff SOC is obtained as follows: if the signal of charging cutoff SOC is 0x0:Not_Active or 0xFE:Abnormal or 0xFF:Invalid, then the charging cutoff SOC is considered invalid, and the value of the vehicle controller charging cutoff SOC under the current condition is determined to be equal to the memory value. The memory value is the power-down stored value received by the vehicle controller in the previous ignition cycle, which ranges from 80 to 100.

[0012] Preferably, the step of obtaining the vehicle controller charging cutoff SOC when the charging cutoff SOC is less than the charging threshold specifically involves: when the value of the charging cutoff SOC satisfies 0 < charging cutoff SOC < 80, the value of the vehicle controller charging cutoff SOC under the current condition is a default value or a memory value; the default value is 100, which is the value set when the vehicle leaves the factory.

[0013] Preferably, the step of obtaining the vehicle controller charging cutoff SOC when the charging cutoff SOC is greater than the charging threshold based on the set charging cutoff SOC specifically involves: when the value of the charging cutoff SOC satisfies 80 ≤ charging cutoff SOC ≤ 100, the value of the vehicle controller charging cutoff SOC under the current condition is specifically:

[0014] When the set charging cutoff SOC is less than 99, the vehicle controller's charging cutoff SOC is equal to the sum of the set charging cutoff SOC and 0.9;

[0015] When the set charging cutoff SOC is 99, the vehicle controller's charging cutoff SOC is equal to the sum of the set charging cutoff SOC and 0.4;

[0016] When the set charging cutoff SOC is 100, the vehicle controller's charging cutoff SOC is equal to the set charging cutoff SOC;

[0017] When the vehicle controller stops charging, the state of charge (SOC) is no less than the actual SOC of the battery.

[0018] Preferably, the step of comparing the vehicle controller's charging cutoff SOC under different conditions with the battery's actual SOC to determine whether charging should continue after the vehicle controller's charging cutoff SOC specifically involves:

[0019] When the set charging cutoff SOC instruction is invalid, the vehicle controller sets the charging cutoff SOC to a memory value. When the memory value is not less than the actual SOC of the battery, the vehicle controller stops charging the battery.

[0020] When the memory value is less than the actual SOC of the battery, the vehicle controller continues to charge; when the charging cutoff SOC value satisfies 0 < charging cutoff SOC < 80, the vehicle controller sets the charging cutoff SOC to the memory value or the default value; when the memory value or the default value is not less than the actual SOC of the battery, the vehicle controller stops charging.

[0021] Preferably, determining whether the battery meets the conditions for recharging after discharge specifically involves:

[0022] If the charging gun is not unplugged and the vehicle controller is not in sleep mode, when the actual SOC of the battery is not greater than the difference between the set charging cutoff SOC and 0.9, the vehicle controller will determine the charging conditions and decide whether to allow charging; when the actual SOC of the battery is greater than the difference between the set charging cutoff SOC and 0.9, the vehicle controller will not respond to the charging request; if the charging gun is plugged in and unplugged again or the vehicle controller is woken up from sleep mode, when the actual SOC of the battery is less than the set charging cutoff SOC, the vehicle controller will determine the charging conditions and decide whether to allow charging.

[0023] Preferably, the determination of charging conditions specifically involves: based on the set charging cutoff SOC instruction information, determining whether the charging cutoff SOC instruction information is valid and its relationship with the charging threshold, obtaining the vehicle controller charging cutoff SOC under different conditions; comparing the vehicle controller charging cutoff SOC under different conditions with the actual SOC of the battery, and determining whether the vehicle controller should continue charging when the charging cutoff SOC is reached.

[0024] The present invention proposes a charging control system for electric vehicles, comprising:

[0025] Information receiving module, the information receiving module receives instruction information based on the charging cutoff SOC set by the instrument;

[0026] The first judgment module determines whether the charging cutoff SOC instruction information is valid and its relationship with the charging threshold based on the set charging cutoff SOC instruction information, and obtains the vehicle controller charging cutoff SOC under different conditions.

[0027] The second judgment module compares the vehicle controller charging cutoff SOC under different conditions with the actual SOC of the battery to determine whether to continue charging when the vehicle controller charging cutoff SOC is reached.

[0028] The third judgment module determines whether the battery meets the conditions for recharging after the vehicle controller has been charged to SOC and continues to discharge. If the conditions are met, the vehicle controller is charged; otherwise, the vehicle controller is not charged.

[0029] A terminal device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of a charging control method for an electric vehicle.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] This invention proposes a charging control method for electric vehicles. By setting the state of charge (SOC) cutoff on the instrument panel and performing a series of judgments and comparisons, it achieves precise control of battery charging, avoiding overcharging or undercharging, thereby extending battery life. Effectively judging the SOC cutoff command information and its relationship with the charging threshold allows for stopping charging at the appropriate time, avoiding unnecessary energy waste and improving charging efficiency. Obtaining the vehicle controller's SOC cutoff based on different situations and comparing it with the actual battery SOC helps to fully utilize battery capacity and optimize battery performance. This solution effectively avoids the vehicle system repeatedly entering charging / charging-off cycles due to rapid displayed battery depletion. Furthermore, this invention is easy to implement, requires no complex programming, effectively improves battery life and health, makes charging safer, reduces vehicle operating costs, ensures the stability of electric vehicles, and enhances the driving experience and safety.

[0032] This invention proposes a charging control system for electric vehicles, which achieves charging control by dividing the system into an information receiving module, a first judgment module, a second judgment module, and a third judgment module. The modular approach ensures that each module is independent, facilitating unified management of all modules. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic flowchart of the electric vehicle charging control method of the present invention.

[0035] Figure 2 This is a schematic diagram of the charging control system for the electric vehicle of the present invention.

[0036] Figure 3 This is a schematic diagram of the structure of an electronic device according to the present invention. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0039] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0040] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention 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 the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0041] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0042] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0043] The present invention will now be described in further detail with reference to the accompanying drawings:

[0044] This invention proposes a charging control method for electric vehicles, such as... Figure 1 As shown, it includes:

[0045] S1. Receive instruction information based on the charging cutoff SOC set by the instrument;

[0046] S2. Based on the set charging cutoff SOC instruction information, determine whether the charging cutoff SOC instruction information is valid and its relationship with the charging threshold, and obtain the vehicle controller charging cutoff SOC under different conditions.

[0047] The determination of the validity of the charging cutoff SOC instruction information and its relationship with the charging threshold is as follows: If the set charging cutoff SOC instruction information is deemed invalid, the vehicle controller charging cutoff SOC under the invalid charging cutoff SOC condition is obtained; if valid, the determination of whether the charging cutoff SOC is greater than the charging threshold is continued; if less than, the vehicle controller charging cutoff SOC under the condition that the charging cutoff SOC is less than the charging threshold is obtained; if greater than, the vehicle controller charging cutoff SOC under the condition that the charging cutoff SOC is greater than the charging threshold is obtained according to the set charging cutoff SOC.

[0048] If the set charging cutoff SOC instruction information is determined to be invalid, the vehicle controller charging cutoff SOC under the invalid charging cutoff SOC condition is obtained. Specifically, if the charging cutoff SOC signal is 0x0:Not_Active, 0xFE:Abnormal, or 0xFF:Invalid, the charging cutoff SOC is considered invalid, and the value of the vehicle controller charging cutoff SOC under the current condition is determined to be equal to the memory value. The memory value is the power-down stored value received by the vehicle controller in the previous ignition cycle, which ranges from 80 to 100.

[0049] The process of obtaining the vehicle controller's charging cutoff SOC when it is less than the charging threshold is as follows: when the value of the charging cutoff SOC satisfies 0 < charging cutoff SOC < 80, the value of the vehicle controller's charging cutoff SOC under the current condition is a default value or a memory value; the default value is 100, which is the value set when the vehicle leaves the factory.

[0050] The step of obtaining the vehicle controller's charging cutoff SOC when it is greater than the charging threshold, based on the set charging cutoff SOC, specifically involves: when the value of the charging cutoff SOC satisfies 80 ≤ charging cutoff SOC ≤ 100, the value of the vehicle controller's charging cutoff SOC under the current condition is as follows:

[0051] When the set charging cutoff SOC is less than 99, the vehicle controller's charging cutoff SOC is equal to the sum of the set charging cutoff SOC and 0.9;

[0052] When the set charging cutoff SOC is 99, the vehicle controller's charging cutoff SOC is equal to the sum of the set charging cutoff SOC and 0.4;

[0053] When the set charging cutoff SOC is 100, the vehicle controller's charging cutoff SOC is equal to the set charging cutoff SOC;

[0054] When the vehicle controller stops charging, the state of charge (SOC) is no less than the actual SOC of the battery.

[0055] S3. Compare the SOC cutoff point of the vehicle controller under different conditions with the actual SOC of the battery to determine whether to continue charging after the SOC cutoff point of the vehicle controller.

[0056] The step of comparing the vehicle controller's charging cutoff SOC under different conditions with the battery's actual SOC to determine whether charging should continue after the vehicle controller's charging cutoff SOC is as follows:

[0057] When the set charging cutoff SOC instruction is invalid, the vehicle controller sets the charging cutoff SOC to a memory value. When the memory value is not less than the actual SOC of the battery, the vehicle controller stops charging the battery.

[0058] When the memory value is less than the actual SOC of the battery, the vehicle controller continues to charge; when the charging cutoff SOC value satisfies 0 < charging cutoff SOC < 80, the vehicle controller sets the charging cutoff SOC to the memory value or the default value; when the memory value or the default value is not less than the actual SOC of the battery, the vehicle controller stops charging.

[0059] S4. When the vehicle controller reaches the SOC (State of Charge) threshold, the battery continues to discharge. It is determined whether the battery meets the conditions for recharging after discharge. If it does, the vehicle controller will start charging; otherwise, the vehicle controller will not charge.

[0060] The determination of whether the battery meets the conditions for recharging after discharge specifically involves:

[0061] If the charging gun is not unplugged and the vehicle controller is not in sleep mode, when the actual SOC of the battery is not greater than the difference between the set charging cutoff SOC and 0.9, the vehicle controller will determine the charging conditions and decide whether to allow charging; when the actual SOC of the battery is greater than the difference between the set charging cutoff SOC and 0.9, the vehicle controller will not respond to the charging request; if the charging gun is plugged in and unplugged again or the vehicle controller is woken up from sleep mode, when the actual SOC of the battery is less than the set charging cutoff SOC, the vehicle controller will determine the charging conditions and decide whether to allow charging.

[0062] The determination of charging conditions specifically involves: based on the set charging cutoff SOC instruction information, determining whether the charging cutoff SOC instruction information is valid and its relationship with the charging threshold, obtaining the vehicle controller charging cutoff SOC under different conditions; comparing the vehicle controller charging cutoff SOC under different conditions with the actual SOC of the battery, and determining whether the vehicle controller should continue charging when the charging cutoff SOC is reached.

[0063] The method is described in detail below:

[0064] This invention relates to three input signals and one output signal. Signal a is an input signal, representing the instrument panel's displayed SOC (integer type); signal a is only for user display. Signal b is an input signal, representing the instrument panel's set charging cutoff SOC (integer type). Signal c is an input signal, representing the battery's actual SOC (accurate to two decimal places). Signal d is an output signal, representing the vehicle controller's charging cutoff SOC. When the user adjusts the instrument panel's set charging cutoff SOC, signal b is sent to the vehicle controller. When the vehicle controller receives signal b, if 0 < b < 80, it does not respond to the current setting and executes according to the original default value or a stored value. If b is 0x0:Not_Active, 0xFE:Abnormal, or 0xFF:Invalid, it executes according to the stored value. The initial default value of the VCU is 100. If 80 ≤ b ≤ 100, the following logic is used to determine different values ​​for d based on c (the battery's actual SOC).

[0065] Specifically, when b < 99, d = b + 0.9; when b = 99, d = b + 0.4; when b = 100, d = b; and when d ≥ c, the vehicle controller stops charging.

[0066] Once the vehicle controller reaches its State of Charge (SOC) threshold, the battery continues to discharge. The system then determines whether the battery meets the conditions for recharging after discharge. If it does, the vehicle controller begins charging; otherwise, it does not.

[0067] If the charging gun is not unplugged and the vehicle controller is not in sleep mode, when the actual SOC of the battery is not greater than the difference between the set charging cutoff SOC and 0.9, the vehicle controller will determine the charging conditions and decide whether to allow charging; when the actual SOC of the battery is greater than the difference between the set charging cutoff SOC and 0.9, the vehicle controller will not respond to the charging request; if the charging gun is plugged in and unplugged again or the vehicle controller is woken up from sleep mode, when the actual SOC of the battery is less than the set charging cutoff SOC, the vehicle controller will determine the charging conditions and decide whether to allow charging.

[0068] The charging condition is determined as follows: based on the set charging cutoff SOC command information, it is determined whether the charging cutoff SOC command information is valid and its relationship with the charging threshold, and the vehicle controller charging cutoff SOC under different conditions is obtained; the vehicle controller charging cutoff SOC under different conditions is compared with the actual SOC of the battery to determine whether the vehicle controller charging cutoff SOC should continue charging.

[0069] Example 2

[0070] This invention proposes a charging control system for electric vehicles, such as... Figure 2 As shown, it includes:

[0071] Information receiving module, the information receiving module receives instruction information based on the charging cutoff SOC set by the instrument;

[0072] The first judgment module determines whether the charging cutoff SOC instruction information is valid and its relationship with the charging threshold based on the set charging cutoff SOC instruction information, and obtains the vehicle controller charging cutoff SOC under different conditions.

[0073] The determination of the validity of the charging cutoff SOC instruction information and its relationship with the charging threshold is as follows: If the set charging cutoff SOC instruction information is deemed invalid, the vehicle controller charging cutoff SOC under the invalid charging cutoff SOC condition is obtained; if valid, the determination of whether the charging cutoff SOC is greater than the charging threshold is continued; if less than, the vehicle controller charging cutoff SOC under the condition that the charging cutoff SOC is less than the charging threshold is obtained; if greater than, the vehicle controller charging cutoff SOC under the condition that the charging cutoff SOC is greater than the charging threshold is obtained according to the set charging cutoff SOC.

[0074] If the set charging cutoff SOC instruction information is determined to be invalid, the vehicle controller charging cutoff SOC under the invalid charging cutoff SOC condition is obtained. Specifically, if the charging cutoff SOC signal is 0x0:Not_Active, 0xFE:Abnormal, or 0xFF:Invalid, the charging cutoff SOC is considered invalid, and the value of the vehicle controller charging cutoff SOC under the current condition is determined to be equal to the memory value. The memory value is the power-down stored value received by the vehicle controller in the previous ignition cycle, which ranges from 80 to 100.

[0075] The process of obtaining the vehicle controller's charging cutoff SOC when it is less than the charging threshold is as follows: when the value of the charging cutoff SOC satisfies 0 < charging cutoff SOC < 80, the value of the vehicle controller's charging cutoff SOC under the current condition is a default value or a memory value; the default value is 100, which is the value set when the vehicle leaves the factory.

[0076] The step of obtaining the vehicle controller's charging cutoff SOC when it is greater than the charging threshold, based on the set charging cutoff SOC, specifically involves: when the value of the charging cutoff SOC satisfies 80 ≤ charging cutoff SOC ≤ 100, the value of the vehicle controller's charging cutoff SOC under the current condition is as follows:

[0077] When the set charging cutoff SOC is less than 99, the vehicle controller's charging cutoff SOC is equal to the sum of the set charging cutoff SOC and 0.9;

[0078] When the set charging cutoff SOC is 99, the vehicle controller's charging cutoff SOC is equal to the sum of the set charging cutoff SOC and 0.4;

[0079] When the set charging cutoff SOC is 100, the vehicle controller's charging cutoff SOC is equal to the set charging cutoff SOC;

[0080] When the vehicle controller stops charging, the state of charge (SOC) is no less than the actual SOC of the battery.

[0081] The second judgment module compares the vehicle controller charging cutoff SOC under different conditions with the actual SOC of the battery to determine whether to continue charging when the vehicle controller charging cutoff SOC is reached.

[0082] The step of comparing the vehicle controller's charging cutoff SOC under different conditions with the battery's actual SOC to determine whether charging should continue after the vehicle controller's charging cutoff SOC is as follows:

[0083] When the set charging cutoff SOC instruction is invalid, the vehicle controller sets the charging cutoff SOC to a memory value. When the memory value is not less than the actual SOC of the battery, the vehicle controller stops charging the battery.

[0084] When the memory value is less than the actual SOC of the battery, the vehicle controller continues to charge; when the charging cutoff SOC value satisfies 0 < charging cutoff SOC < 80, the vehicle controller sets the charging cutoff SOC to the memory value or the default value; when the memory value or the default value is not less than the actual SOC of the battery, the vehicle controller stops charging.

[0085] The third judgment module determines whether the battery meets the conditions for recharging after the vehicle controller has been charged to SOC and continues to discharge. If the conditions are met, the vehicle controller is charged; otherwise, the vehicle controller is not charged.

[0086] The determination of whether the battery meets the conditions for recharging after discharge specifically involves:

[0087] If the charging gun is not unplugged and the vehicle controller is not in sleep mode, when the actual SOC of the battery is not greater than the difference between the set charging cutoff SOC and 0.9, the vehicle controller will determine the charging conditions and decide whether to allow charging; when the actual SOC of the battery is greater than the difference between the set charging cutoff SOC and 0.9, the vehicle controller will not respond to the charging request; if the charging gun is plugged in and unplugged again or the vehicle controller is woken up from sleep mode, when the actual SOC of the battery is less than the set charging cutoff SOC, the vehicle controller will determine the charging conditions and decide whether to allow charging.

[0088] The determination of charging conditions specifically involves: based on the set charging cutoff SOC instruction information, determining whether the charging cutoff SOC instruction information is valid and its relationship with the charging threshold, obtaining the vehicle controller charging cutoff SOC under different conditions; comparing the vehicle controller charging cutoff SOC under different conditions with the actual SOC of the battery, and determining whether the vehicle controller should continue charging when the charging cutoff SOC is reached.

[0089] Example 3

[0090] Please see Figure 3 As shown, the present invention also provides an electronic device 100 for a charging control method for an electric vehicle; the electronic device 100 includes a memory 101, at least one processor 102, a computer program 103 stored in the memory 101 and executable on the at least one processor 102, and at least one communication bus 104.

[0091] The memory 101 can be used to store the computer program 103. The processor 102 implements the steps of the electric vehicle charging control method described in Embodiment 1 by running or executing the computer program stored in the memory 101 and calling the data stored in the memory 101. The memory 101 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created according to the use of the electronic device 100 (such as audio data), etc. In addition, the memory 101 may include non-volatile memory, such as hard disk, memory, plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.

[0092] The at least one processor 102 may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 102 may be a microprocessor or any conventional processor. The processor 102 is the control center of the electronic device 100, connecting various parts of the electronic device 100 via various interfaces and lines.

[0093] The memory 101 in the electronic device 100 stores multiple instructions to implement a charging control method for an electric vehicle, and the processor 102 can execute the multiple instructions to achieve the following:

[0094] Receive instruction information based on the charging cutoff SOC set by the instrument;

[0095] Based on the set charging cutoff SOC command information, determine whether the charging cutoff SOC command information is valid and its relationship with the charging threshold, and obtain the vehicle controller charging cutoff SOC under different conditions;

[0096] The vehicle controller's state of charge cutoff (SOC) under different conditions is compared with the battery's actual SOC to determine whether charging should continue after the vehicle controller's SOC cutoff.

[0097] Once the vehicle controller reaches its State of Charge (SOC) threshold, the battery continues to discharge. The system then determines whether the battery meets the conditions for recharging after discharge. If it does, the vehicle controller begins charging; otherwise, it does not.

[0098] If the modules / units integrated in the electronic device 100 are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, and a read-only memory (ROM).

[0099] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0100] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0101] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0102] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A charging control method for an electric vehicle, characterized in that, include: Receive instruction information based on the charging cutoff SOC set by the instrument; Based on the set charging cutoff SOC command information, determine whether the charging cutoff SOC command information is valid and its relationship with the charging threshold, and obtain the vehicle controller charging cutoff SOC under different conditions; The vehicle controller's state of charge cutoff (SOC) under different conditions is compared with the battery's actual SOC to determine whether charging should continue after the vehicle controller's SOC cutoff. Once the vehicle controller reaches its State of Charge (SOC) threshold, the battery continues to discharge. The system then determines whether the battery meets the conditions for recharging after discharge. If it does, the vehicle controller begins charging; otherwise, it does not. The determination of whether the instruction information for determining the charging cutoff SOC is valid and its relationship with the charging threshold is as follows: if the instruction information for determining the charging cutoff SOC is invalid, then the charging cutoff SOC of the vehicle controller under the condition that the charging cutoff SOC is invalid is obtained; if it is valid, then it is further determined whether the charging cutoff SOC is greater than the charging threshold. If it is less than, then obtain the vehicle controller charging cutoff SOC when the charging cutoff SOC is less than the charging threshold; If it is greater than the set charging cutoff SOC, then the vehicle controller charging cutoff SOC when the charging cutoff SOC is greater than the charging threshold is obtained.

2. The charging control method for an electric vehicle according to claim 1, characterized in that, If the set charging cutoff SOC instruction information is determined to be invalid, the vehicle controller charging cutoff SOC under the invalid charging cutoff SOC condition is obtained. Specifically, if the charging cutoff SOC signal is 0x0:Not_Active, 0xFE:Abnormal, or 0xFF:Invalid, the charging cutoff SOC is considered invalid, and the value of the vehicle controller charging cutoff SOC under the current condition is determined to be equal to the memory value. The memory value is the power-down stored value received by the vehicle controller in the previous ignition cycle, which ranges from 80 to 100.

3. The charging control method for electric vehicles according to claim 1, characterized in that, The process of obtaining the vehicle controller's charging cutoff SOC when it is less than the charging threshold is as follows: when the value of the charging cutoff SOC satisfies 0 < charging cutoff SOC < 80, the value of the vehicle controller's charging cutoff SOC under the current condition is a default value or a memory value; the default value is 100, which is the value set when the vehicle leaves the factory.

4. The charging control method for an electric vehicle according to claim 1, characterized in that, The step of obtaining the vehicle controller's charging cutoff SOC when it is greater than the charging threshold, based on the set charging cutoff SOC, specifically involves: when the value of the charging cutoff SOC satisfies 80 ≤ charging cutoff SOC ≤ 100, the value of the vehicle controller's charging cutoff SOC under the current condition is as follows: When the set charging cutoff SOC is less than 99, the vehicle controller's charging cutoff SOC is equal to the sum of the set charging cutoff SOC and 0.9; When the set charging cutoff SOC is 99, the vehicle controller's charging cutoff SOC is equal to the sum of the set charging cutoff SOC and 0.4; When the set charging cutoff SOC is 100, the vehicle controller's charging cutoff SOC is equal to the set charging cutoff SOC; When the vehicle controller stops charging, the state of charge (SOC) is no less than the actual SOC of the battery.

5. The charging control method for an electric vehicle according to claim 1, characterized in that, The step of comparing the vehicle controller's charging cutoff SOC under different conditions with the battery's actual SOC to determine whether charging should continue after the vehicle controller's charging cutoff SOC is as follows: When the set charging cutoff SOC instruction is invalid, the vehicle controller sets the charging cutoff SOC to a memory value. When the memory value is not less than the actual SOC of the battery, the vehicle controller stops charging the battery. When the memory value is less than the actual SOC of the battery, the vehicle controller continues to charge; when the charging cutoff SOC value satisfies 0 < charging cutoff SOC < 80, the vehicle controller sets the charging cutoff SOC to the memory value or the default value; when the memory value or the default value is not less than the actual SOC of the battery, the vehicle controller stops charging.

6. The charging control method for an electric vehicle according to claim 1, characterized in that, The determination of whether the battery meets the conditions for recharging after discharge specifically involves: If the charging gun is not disconnected and the vehicle controller is not in sleep mode, when the actual SOC of the battery is not greater than the difference between the set charging cutoff SOC and 0.9, the vehicle controller judges the charging conditions and decides whether to allow charging; when the actual SOC of the battery is greater than the difference between the set charging cutoff SOC and 0.9, the vehicle controller does not respond to the charging request. If the charging gun is plugged in or unplugged again, or the vehicle controller is woken up from sleep mode, and the actual SOC of the battery is less than the set charging cutoff SOC, the vehicle controller will determine the charging conditions and decide whether to allow charging.

7. The charging control method for an electric vehicle according to claim 6, characterized in that, The determination of charging conditions specifically involves: based on the set charging cutoff SOC instruction information, determining whether the charging cutoff SOC instruction information is valid and its relationship with the charging threshold, obtaining the vehicle controller charging cutoff SOC under different conditions; comparing the vehicle controller charging cutoff SOC under different conditions with the actual SOC of the battery, and determining whether the vehicle controller should continue charging when the charging cutoff SOC is reached.

8. A charging control system for an electric vehicle, characterized in that, The electric vehicle charging control method according to any one of claims 1 to 7 includes: Information receiving module, the information receiving module receives instruction information based on the charging cutoff SOC set by the instrument; The first judgment module determines whether the charging cutoff SOC instruction information is valid and its relationship with the charging threshold based on the set charging cutoff SOC instruction information, and obtains the vehicle controller charging cutoff SOC under different conditions. The second judgment module compares the vehicle controller charging cutoff SOC under different conditions with the actual SOC of the battery to determine whether to continue charging when the vehicle controller charging cutoff SOC is reached. The third judgment module determines whether the battery meets the conditions for recharging after the vehicle controller has been charged to SOC and continues to discharge. If the conditions are met, the vehicle controller is charged; otherwise, the vehicle controller is not charged.

9. A terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the charging control method for an electric vehicle as described in any one of claims 1 to 7.

Images