Charging control method and device of electric vehicle and nonvolatile storage medium

Abstract

The invention discloses a charging control method and device of an electric vehicle and a nonvolatile storage medium. The method comprises the following steps: acquiring the maximum monomer voltage detection value of a plurality of monomer batteries at the current moment and the maximum monomer voltage detection value at the previous moment in the charging process of the electric vehicle; based on the maximum monomer voltage detection value at the current moment and the maximum monomer voltage detection value at the previous moment, adjusting the maximum monomer voltage reference value at the previous moment to obtain the maximum monomer voltage reference value at the current moment; judging whether the maximum monomer voltage reference value at the current moment exceeds the full charge voltage or not; and under the condition that the maximum monomer voltage reference value at the current moment exceeds the full charge voltage, charging the electric vehicle by adopting a current lower than a preset threshold value. According to the invention, the technical problem that the battery is not fully charged due to single voltage jump in the current charging process of the lithium battery, charging is stopped, but charging is still displayed, so that a user misjudges to influence travel is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy vehicle control, in particular to a charging control method and device of an electric vehicle and a nonvolatile storage medium. BACKGROUND

[0002] As a key energy of new energy vehicles, lithium batteries have become the first choice for electric vehicle power batteries due to their high specific energy, low self-discharge rate and long cycle life. However, the current charging control strategy of lithium ion batteries has certain limitations, especially in handling abnormal jumps of single cell voltage. When the single cell voltage jumps abnormally during battery charging to be higher than the full charge voltage but still lower than the fault threshold, the system may misjudge and reduce the charging current to 0A. Even without full charge calibration, the interaction between the charging pile and the battery management system (BMS) still indicates that the charging is in progress. In this case, although the charging indicator light shows the charging state, the battery is not actually continuing to charge, which leads to the customer's misjudgment of the charging state, and further affects the travel plan, affecting the charging efficiency and user experience of electric vehicles.

[0003] At present, there is no effective solution to the above problems. SUMMARY

[0004] The embodiments of the present application provide a charging control method and device of an electric vehicle and a nonvolatile storage medium to at least solve the technical problem that the battery is not fully charged but still displays that it is being charged, which leads to user misjudgment and affects travel, in the case that the current charging process of lithium batteries has a single cell voltage jump.

[0005] According to one aspect of the embodiments of the present application, a charging control method of an electric vehicle is provided, comprising: obtaining a maximum single cell voltage detection value in a plurality of single cells of the electric vehicle at a current time in a charging process, and a maximum single cell voltage detection value at a previous time of the current time; adjusting a maximum single cell voltage reference value at the previous time based on the maximum single cell voltage detection value at the current time and the maximum single cell voltage detection value at the previous time to obtain a maximum single cell voltage reference value at the current time; determining whether the maximum single cell voltage reference value at the current time exceeds a preset full charge voltage; and charging the electric vehicle with a current lower than a preset threshold in the case that the maximum single cell voltage reference value at the current time exceeds the full charge voltage.

[0006] Optionally, based on the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment, the maximum single-cell voltage reference value at the previous moment is adjusted to obtain the maximum single-cell voltage reference value at the current moment, including: controlling the maximum single-cell voltage reference value at the current moment to be the same as the maximum single-cell voltage reference value at the previous moment, provided that the maximum single-cell voltage detection value at the current moment does not exceed the maximum single-cell voltage detection value at the previous moment.

[0007] Optionally, based on the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment, the maximum single-cell voltage reference value at the previous moment is adjusted to obtain the maximum single-cell voltage reference value at the current moment, including: if the maximum single-cell voltage detection value at the current moment exceeds the maximum single-cell voltage detection value at the previous moment by a preset voltage difference, the maximum single-cell voltage reference value at the previous moment and the preset voltage difference are determined as the maximum single-cell voltage reference value at the current moment.

[0008] Optionally, if the maximum single-cell voltage reference value at the current moment does not exceed the full-charge voltage, the target charging current for the electric vehicle is determined based on the maximum single-cell voltage reference value at the current moment; and the electric vehicle is charged based on the target charging current.

[0009] Optionally, it can be detected whether the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment both exceed the full-charge voltage; if it is detected that the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment both exceed the full-charge voltage, charging of the electric vehicle is stopped.

[0010] Optionally, it can be determined whether the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment both exceed a preset fault voltage threshold; if the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment both exceed the fault voltage threshold, the charging current of the electric vehicle is set to 0A and a warning prompt is generated.

[0011] Optionally, when the electric vehicle is in the process of charging, the charging indicator light is controlled to be in the charging process state; when the electric vehicle is in the process of charging or the charging current of the electric vehicle is 0A for a preset time, the charging indicator light is controlled to be in the charging complete state.

[0012] According to another aspect of the embodiments of the present application, there is also provided a charging control device of an electric vehicle, comprising: an acquisition module configured to acquire a maximum single battery voltage detection value of a plurality of single batteries of the electric vehicle at a current time during a charging process, and a maximum single battery voltage detection value at a previous time of the current time; an adjustment module configured to adjust a maximum single battery voltage reference value at the previous time based on the maximum single battery voltage detection value at the current time and the maximum single battery voltage detection value at the previous time, to obtain a maximum single battery voltage reference value at the current time; a judgment module configured to judge whether the maximum single battery voltage reference value at the current time exceeds a preset full charging voltage; and a charging module configured to charge the electric vehicle with a current lower than a preset threshold in a case where the maximum single battery voltage reference value at the current time exceeds the full charging voltage.

[0013] According to still another aspect of the embodiments of the present application, there is also provided a non-volatile storage medium comprising a stored program, wherein the program, when executed, controls a device in which the non-volatile storage medium is located to perform any one of the charging control methods of the electric vehicle.

[0014] According to yet another aspect of the embodiments of the present application, there is also provided a computer device comprising a processor configured to execute a program, wherein the program, when executed, performs any one of the charging control methods of the electric vehicle.

[0015] According to still another aspect of the embodiments of the present application, there is also provided a computer program product comprising a computer program configured to, when executed by a processor, implement any one of the charging control methods of the electric vehicle.

[0016] In the embodiments of the present application, the charging control method of the electric vehicle is adopted, the maximum single battery voltage detection value of the plurality of single batteries of the electric vehicle at the current time during the charging process is acquired, and the maximum single battery voltage detection value at the previous time of the current time is acquired; the maximum single battery voltage reference value at the previous time is adjusted based on the maximum single battery voltage detection value at the current time and the maximum single battery voltage detection value at the previous time, to obtain the maximum single battery voltage reference value at the current time; it is judged whether the maximum single battery voltage reference value at the current time exceeds the preset full charging voltage; and the electric vehicle is charged with the current lower than the preset threshold in a case where the maximum single battery voltage reference value at the current time exceeds the full charging voltage, so that the purpose of continuing charging even if the voltage jumps is achieved, thereby achieving the technical effects of improving the charging efficiency and user experience of the electric vehicle, and further solving the technical problem that the charging of the lithium battery is stopped but still displays that it is being charged in a case where the charging process of the lithium battery exists the single battery voltage jump leading to the battery not being fully charged, thereby affecting the user's judgment and travel. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0018] Figure 1 A hardware structure block diagram of a computer terminal for implementing a charging control method for electric vehicles is shown.

[0019] Figure 2 This is a schematic flowchart of a charging control method for an electric vehicle provided according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of a charging control method for an electric vehicle provided according to an optional embodiment of the present invention;

[0021] Figure 4 This is a flowchart of the charging indicator light control method for an electric vehicle provided by an optional embodiment of the present invention.

[0022] Figure 5 This is a structural block diagram of a charging control device for an electric vehicle provided according to an embodiment of the present invention. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0025] According to an embodiment of the present invention, a method embodiment for charging control of an electric vehicle is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0026] The method embodiment provided in Embodiment 1 of this application can be executed on a mobile terminal, computer terminal, or similar computing device. Figure 1 A hardware block diagram of a computer terminal for implementing a charging control method for electric vehicles is shown. Figure 1 As shown, the computer terminal 10 may include one or more processors (shown as 102a, 102b, ..., 102n in the figure) (the processor may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data. In addition, it may also include: a display, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of a BUS bus), a network interface, a power supply, and / or a camera. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the aforementioned electronic device. For example, computer terminal 10 may also include... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0027] It should be noted that the aforementioned one or more processors and / or other data processing circuits are generally referred to herein as "data processing circuits". These data processing circuits may be implemented wholly or partially as software, hardware, firmware, or any other combination thereof. Furthermore, the data processing circuits may be a single, independent processing module, or may be wholly or partially integrated into any other element in the computer terminal 10. As involved in the embodiments of this application, the data processing circuits serve as processor control (e.g., selection of a variable resistor termination path connected to an interface).

[0028] The memory 104 can be used to store software programs and modules of application software, such as the program instructions / data storage device corresponding to the electric vehicle charging control method in this embodiment of the invention. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory 104, thereby implementing the electric vehicle charging control method of the aforementioned application. The memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor, and these remote memories can be connected to the computer terminal 10 via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0029] The display may be, for example, a touchscreen liquid crystal display (LCD) that allows the user to interact with the user interface of the computer terminal 10.

[0030] Figure 2 This is a schematic flowchart of a charging control method for an electric vehicle according to an embodiment of the present invention, as shown below. Figure 2 As shown, the method includes the following steps:

[0031] Step S202: Obtain the maximum single-cell voltage detection value among multiple single-cell batteries at the current moment during the charging process of the electric vehicle, as well as the maximum single-cell voltage detection value at the previous moment.

[0032] In this step, during the charging process of the electric vehicle, the maximum voltage of multiple individual cells in the battery pack can be monitored in real time based on the Battery Management System (BMS), thus obtaining the maximum voltage detection values ​​of the current and previous moments. The BMS periodically collects voltage data from each individual cell using voltage sensors connected to them. The sensors convert the voltage signals into digital signals for processing by the BMS. At the end of each data acquisition cycle, the BMS processes and analyzes the voltage data of all individual cells, selecting the maximum value as the maximum voltage detection value for the current moment. The BMS stores the maximum voltage detection value from the previous moment to ensure data continuity and traceability.

[0033] Step S204: Based on the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment, adjust the maximum single-cell voltage reference value at the previous moment to obtain the maximum single-cell voltage reference value at the current moment.

[0034] In this step, the maximum single-cell voltage reference value refers to the maximum single-cell voltage value, based on historical data, used by the BMS (Battery Management System) for control and reference during battery charging or discharging. This reference value is part of the BMS control strategy, used to monitor and adjust the charging or discharging behavior of the battery pack to ensure battery safety and performance. The relationship between the current maximum single-cell voltage detection value and the previous maximum single-cell voltage detection value can be analyzed to determine the voltage change trend. If the current maximum single-cell voltage detection value is lower than the previous maximum single-cell voltage detection value, this may indicate an unexpected voltage drop, possibly due to depolarization or other transient effects. In this case, it is advisable to keep the maximum single-cell voltage reference value unchanged, i.e., maintain the previous maximum single-cell voltage reference value. If the current maximum single-cell voltage detection value is higher than the previous maximum single-cell voltage detection value, it is advisable to appropriately increase the maximum single-cell voltage reference value.

[0035] In this way, the BMS can effectively manage voltage changes during the charging process, especially near the point of change in the charging current map, thereby improving the continuity and stability of charging.

[0036] Step S206: Determine whether the current maximum single-cell voltage reference value exceeds the preset full charge voltage.

[0037] In this step, determining whether the current maximum single-cell voltage reference value exceeds the preset full-charge voltage aims to ensure that the battery is not overcharged, thereby avoiding battery damage, safety risks, or performance degradation. The BMS needs to read or determine the preset full-charge voltage value from its configuration. This value is typically set based on battery chemistry, design specifications, and safety standards to define the upper limit of the battery voltage under full charge conditions.

[0038] Step S208: If the maximum single-cell voltage reference value at the current moment exceeds the full charge voltage, the electric vehicle is charged with a current lower than a preset threshold.

[0039] In this step, charging the electric vehicle with a current below a preset threshold when the current maximum single-cell voltage reference value exceeds the full charge voltage is a refined charging control strategy. Its main purpose is to prevent battery overcharging, protect battery safety, extend battery life, and ensure efficient charging. The charging current can be adjusted to a level below the preset safety threshold. This prevents overcharging and protects battery safety, while also avoiding voltage spikes that could cause the current to drop to 0A, affecting charging efficiency. The preset threshold is typically the minimum charging current defined in the charging map. In low-current charging mode, the BMS may adjust the charging strategy, such as using constant current mode, constant voltage mode, or pulse charging, to adapt to the current battery state and ensure a smooth charging process. This optimized charging strategy helps the battery complete the charging process more safely and efficiently when approaching full charge. The BMS can simultaneously activate a full charge calibration mechanism to accurately determine whether the battery has reached full charge.

[0040] By charging with a current below a preset threshold when the maximum single-cell voltage reference value exceeds the full charge voltage, the BMS can effectively control voltage changes during battery charging, avoiding overcharging or safety issues that may result from abnormal voltage increases. This strategy demonstrates the modern battery management system's ability to precisely monitor and intelligently control battery status, and is one of the key technologies for ensuring the safety and performance of electric vehicle batteries.

[0041] By monitoring the individual battery voltages in real time during the charging process and adjusting the reference value based on the voltage trends, malfunctions caused by voltage fluctuations are avoided. The technology in this embodiment effectively prevents 0A charging current due to abnormal voltage, ensuring that electric vehicles are fully charged and improving charging efficiency and user experience. Through the above steps, the goal of continuing charging even when voltage fluctuations occur is achieved, thereby improving the charging efficiency and user experience of electric vehicles. This also solves the current technical problem of lithium battery charging processes where charging stops even when the battery is not fully charged due to individual battery voltage fluctuations, but the system still displays that it is charging, leading to user misjudgment and affecting travel.

[0042] As an optional embodiment, the maximum single-cell voltage reference value at the previous moment is adjusted based on the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment to obtain the maximum single-cell voltage reference value at the current moment, including: controlling the maximum single-cell voltage reference value at the current moment to be the same as the maximum single-cell voltage reference value at the previous moment, provided that the maximum single-cell voltage detection value at the current moment does not exceed the maximum single-cell voltage detection value at the previous moment.

[0043] Optionally, the maximum single-cell voltage reference value at the previous moment can be adjusted based on the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment. This strategy aims to smooth the voltage change trend, prevent unstable fluctuations in charging current, and improve the efficiency and safety of battery charging.

[0044] When the maximum single-cell voltage detected at the current moment does not exceed the maximum single-cell voltage detected at the previous moment, it means that the voltage change is within a reasonable range and there are no abrupt changes. In this case, the BMS sets the maximum single-cell voltage reference value at the current moment to be the same as the maximum single-cell voltage reference value at the previous moment. This helps maintain the stability of the charging process and avoids frequent changes in the charging strategy due to small voltage fluctuations, which could lead to decreased charging efficiency or unnecessary fluctuations in charging current.

[0045] In other cases, such as when the maximum single-cell voltage detection value at the current moment significantly exceeds the value at the previous moment, it may be necessary to adjust the reference value according to a specific algorithm, such as limiting the voltage rise slope or triggering a fault protection mechanism.

[0046] Through the above logic, the BMS can effectively control the changes in the maximum single-cell voltage reference value, ensuring that voltage changes meet preset conditions, thereby achieving more stable and safer charging process control. In practical applications, this strategy can effectively prevent charging current instability caused by rapid changes in single-cell voltage, avoid overcharging or undercharging, protect the battery from damage, and provide users with a more reliable and accurate charging experience.

[0047] As an optional embodiment, the maximum single-cell voltage reference value at the previous moment is adjusted based on the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment to obtain the maximum single-cell voltage reference value at the current moment, including: when the maximum single-cell voltage detection value at the current moment exceeds the maximum single-cell voltage detection value at the previous moment by a preset voltage difference, the maximum single-cell voltage reference value at the previous moment and the preset voltage difference are determined as the maximum single-cell voltage reference value at the current moment.

[0048] Optionally, a preset voltage difference value, such as 10mV, can be set. This preset value is used to determine whether the change between the current and previous maximum cell voltage detection values ​​is within an acceptable range. The current maximum cell voltage detection value and the previous maximum cell voltage detection value can be continuously compared. If the current maximum cell voltage detection value exceeds the preset voltage difference (e.g., exceeding 10mV) of the previous maximum cell voltage detection value, this indicates a significant upward trend in battery voltage. In this case, the BMS will adjust the previous maximum cell voltage reference value so that the sum of its value and the preset voltage difference equals the current maximum cell voltage reference value. This adjustment strategy helps smooth voltage changes and ensures the system can respond promptly to large voltage increases, avoiding potential overcharging risks.

[0049] If the current maximum cell voltage detection value does not exceed a preset voltage difference (e.g., 10mV) compared to the previous maximum cell voltage detection value, the BMS sets the current maximum cell voltage reference value to be the same as the previous maximum cell voltage detection value. This helps maintain the stability of the charging process.

[0050] By setting this adjustment rule, the BMS can control the charging current by increasing the maximum single-cell voltage reference value when the voltage rises sharply, preventing the voltage from rising indefinitely, and ensuring that the battery is not mistakenly considered to be fully charged due to voltage jumps, thereby avoiding undercharging.

[0051] The selection of the preset voltage difference needs to take into account the rate of the battery chemical reaction, the sampling frequency and reaction time of the BMS, as well as the temperature and state of charge (SoC) of the battery pack. These factors together determine the magnitude of the preset voltage difference, ensuring that the adjustment strategy can respond quickly to voltage changes without being overly sensitive, thereby maintaining the stability and safety of the charging process.

[0052] As an optional embodiment, if the maximum single-cell voltage reference value at the current moment does not exceed the full-charge voltage, the target charging current for the electric vehicle is determined based on the maximum single-cell voltage reference value at the current moment; and the electric vehicle is charged based on the target charging current.

[0053] Optionally, the maximum single-cell voltage reference value calculated at the current moment can be read in real time. This value is adjusted based on the latest detected maximum single-cell voltage value and the reference value from the previous moment. The current maximum single-cell voltage reference value can be compared with the preset full-charge voltage to confirm whether it exceeds the full-charge voltage. If it does not exceed the full-charge voltage, it indicates that the battery has not yet reached a fully charged state, and charging can continue. After confirming that the battery has not reached a fully charged state, the optimal charging current, i.e., the target charging current, will be found or calculated from the charging map based on the current maximum single-cell voltage reference value and the battery's current state (such as temperature, state of charge (SoC), etc.). The charging map is a pre-set current-voltage curve used to guide the optimal charging strategy under different battery states.

[0054] The target charging current can be determined based on the following principles: when the battery's state of charge (SOC) is low, a larger current is used to increase the charging speed. As the SOC increases, the charging current is gradually reduced to avoid excessive voltage rise and ensure safe charging. When approaching full charge, a very low current or constant voltage charging mode may be used to prevent overcharging.

[0055] Through the above steps, the BMS can determine and execute the target charging current based on the maximum single-cell voltage reference value when the battery is not fully charged, and dynamically adjust the charging parameters to ensure that the battery is not damaged during the charging process and can quickly reach a fully charged state.

[0056] As an optional embodiment, it is detected whether the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment both exceed the full charge voltage; if it is detected that the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment both exceed the full charge voltage, charging of the electric vehicle is stopped.

[0057] Optionally, the system detects whether the maximum single-cell voltage at the current moment and the maximum single-cell voltage at the previous moment both exceed the full-charge voltage. If the maximum single-cell voltage at two consecutive moments exceeds the full-charge voltage, the BMS will immediately take measures to stop charging the electric vehicle to prevent the risk of battery overcharging. The system can continuously monitor the voltage of all cells in the battery pack and record the maximum single-cell voltage at each moment. The BMS will compare and evaluate the maximum single-cell voltage at the current moment and the previous moment to determine whether the voltage exceeds the full-charge voltage. If the maximum single-cell voltage at any moment does not exceed the full-charge voltage, the charging process will continue, and the BMS will adjust the charging strategy based on the current voltage reference value. The full-charge voltage is set according to the battery type and specifications and represents the highest voltage of a battery cell in a safe fully charged state. Exceeding this voltage may lead to battery overcharging, causing battery performance degradation, or even safety issues.

[0058] In practice, charging of electric vehicles can be stopped when the maximum single-cell voltage detection value exceeds the full charge voltage within a certain period of time.

[0059] If both the current maximum single-cell voltage and the previous maximum single-cell voltage exceed the full charge voltage, this indicates that the battery has not only reached full charge but also shows a tendency for abnormal voltage increases, potentially posing an overcharge risk. In this situation, the BMS will immediately activate the overvoltage protection mechanism to stop the charging process. This is typically achieved by sending a stop-charge command to the charging control unit, which, upon receiving the command, will quickly cut off the charging current to prevent further charging. The BMS will also continuously monitor the battery's status, such as temperature and voltage, to ensure the battery remains within safe limits. After stopping charging, the BMS may enter a cooling or voltage stabilization phase to monitor whether the battery can return to a safe state. If the battery status returns to normal, the BMS may allow charging calibration or resumption of charging, but this usually requires manual intervention or specific system-level commands.

[0060] By continuously detecting and comparing the maximum single-cell voltage at two different times with the full-charge voltage, the BMS can promptly identify overcharge risks and take swift action to stop charging, thereby protecting the battery from damage and ensuring the safety of electric vehicles and users.

[0061] As an optional embodiment, it is determined whether the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment both exceed a preset fault voltage threshold; if the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment both exceed the fault voltage threshold, the charging current of the electric vehicle is set to 0A and a warning prompt is generated.

[0062] Optionally, when the maximum single-cell voltage value is detected to exceed the fault voltage threshold at two consecutive moments, the BMS will immediately take measures to set the charging current of the electric vehicle to 0A and generate a warning to prevent potential battery failures and safety risks. It can continuously monitor the voltage of all cells in the battery pack and record the maximum single-cell voltage detection value at each moment. If a maximum single-cell voltage detection value is detected to exceed the fault voltage threshold, a fault diagnosis mechanism can be activated. If the maximum single-cell voltage detection values ​​detected within a certain time period all exceed the fault voltage threshold, the charging current of the electric vehicle will be set to 0A and a warning will be generated.

[0063] If both the current maximum single-cell voltage reading and the previous maximum single-cell voltage reading exceed the fault voltage threshold, this indicates that two consecutive voltage readings show abnormally high voltage, potentially indicating a battery fault. In this situation, the BMS will immediately execute an overvoltage fault response. First, it will set the electric vehicle's charging current to 0A, effectively cutting off the charging current to prevent the battery voltage from continuing to rise and to prevent potential battery damage or safety incidents. The BMS will generate a warning alert, notifying the user and system maintenance personnel via the in-vehicle display, mobile application, or other means, informing them that the battery has experienced an overvoltage fault and charging has been stopped. The warning alert typically includes specific information about the fault, such as the fault type, time of occurrence, and potential impacts, so that the user understands the situation and can take appropriate follow-up actions, such as checking the battery, contacting the service provider, or implementing emergency measures such as battery cooling.

[0064] Following an overvoltage fault response, the BMS and vehicle systems will enter a safety check mode to monitor whether the battery status has returned to normal and whether it is ready for recharging. If the system detects that the battery is safe, a full charge calibration procedure may be required to ensure that the battery can correctly identify the full charge status during recharging and to prevent similar faults from recurring.

[0065] Through this mechanism, the BMS can quickly respond when it detects an abnormal rise in battery voltage to the fault voltage threshold, cut off the charging current, and generate a warning, thereby effectively protecting the safety of the battery and the vehicle and avoiding risks caused by battery failure.

[0066] Figure 3 This is a schematic diagram of a charging control method for an electric vehicle provided according to an optional embodiment of the present invention, such as... Figure 3 As shown, the maximum single-cell voltage calculated at the previous moment is marked as CellMaxVoltage1, the maximum single-cell voltage calculated at the current moment is marked as CellMaxVoltage11, the maximum single-cell voltage at the previous moment used in the charging process is marked as CellMaxVoltage2, and the maximum single-cell voltage at the current moment used in the charging process is marked as CellMaxVoltage22.

[0067] If CellMaxVoltage11 decreases relative to CellMaxVoltage1, then CellMaxVoltage22 is set to the same value as CellMaxVoltage2. If CellMaxVoltage11 increases relative to CellMaxVoltage1 by more than 10mV, then CellMaxVoltage22 = CellMaxVoltage2 + 10mV. If CellMaxVoltage11 increases relative to CellMaxVoltage1 but does not exceed 10mV, then CellMaxVoltage22 = CellMaxVoltage11.

[0068] If CellMaxVoltage22 exceeds the full charge voltage at the current moment, the charging current remains at the minimum current in the charging map, and charging continues. Charging exits after a full charge calibration occurs. The full charge calibration is performed when the CellMaxVoltage11 value reaches the full charge voltage and remains there for a certain period, at which point the SOC value of the battery in the electric vehicle is corrected to 100%.

[0069] If CellMaxVoltage11 exceeds the fault threshold, the fault diagnosis mechanism will be activated: if CellMaxVoltage11 exceeds the fault threshold and continues for a certain period of time, an overvoltage fault will be reported and charging will be stopped.

[0070] If the charging process has ended at the current moment, then CellMaxVoltage22 = CellMaxVoltage11.

[0071] As an optional embodiment, when the electric vehicle is in the charging process, the charging indicator light is controlled to be in the charging process state; when the electric vehicle is in the charging completed state or the charging current of the electric vehicle is 0A for a preset time, the charging indicator light is controlled to be in the charging completed state.

[0072] Optionally, in the charging management of electric vehicles, the status control of the charging indicator light is an important part of the user interface design, helping drivers and users intuitively understand the vehicle's charging status. The Battery Management System (BMS) intelligently controls the status of the charging indicator light based on real-time data during the vehicle's charging process to ensure that users receive accurate information feedback.

[0073] Figure 4 This is a flowchart illustrating the charging indicator light control method for an electric vehicle according to an optional embodiment of the present invention. Figure 4As shown, when an electric vehicle is charging, i.e., the charging current is greater than 0A and the battery is not fully charged, the BMS will control the charging indicator light to display a "charging in progress" status. This is usually manifested by the charging indicator light flashing continuously or displaying a specific charging pattern, intuitively informing the user that the vehicle is charging.

[0074] When the vehicle completes charging—that is, the BMS detects that the battery has reached full charge, or the charging current is 0A and has remained so for a certain period (a preset duration, such as 3 seconds)—the BMS will control the charging indicator light to switch to the "charging complete" state. This may manifest as the charging indicator light becoming constantly lit, displaying a different color (such as green), or displaying a message indicating that charging is complete through the vehicle's infotainment system. The preset duration is chosen to ensure the accuracy of the charging completion judgment and avoid misjudgments caused by instantaneous current fluctuations (such as the current briefly dropping to 0A and then recovering). 3 seconds is a common threshold, sufficient to confirm that the charging current of 0A is continuous rather than instantaneous.

[0075] The Battery Management System (BMS) continuously monitors the charging status of electric vehicles, including key parameters such as maximum cell voltage, charging current, and battery temperature. When the charging status changes from "charging in progress" to "charging complete," the BMS immediately updates the status of the charging indicator light to ensure that users can obtain accurate information about the vehicle's charging status in a timely manner.

[0076] The charging indicator light's state switching logic is not limited to the charging process and charging completion states. In non-charging states (such as when the vehicle is off or not connected to a charger), the charging indicator light should display a "not charging" state to avoid confusion.

[0077] By providing clear and accurate charging status indicators, BMS helps improve the user experience, allowing users to quickly understand the vehicle's charging status at any time and make corresponding travel or maintenance decisions.

[0078] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, because according to the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0079] Through the above description of the embodiments, those skilled in the art can clearly understand that the charging control method for electric vehicles according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0080] According to embodiments of the present invention, a charging control device for an electric vehicle for implementing the above-described charging control method for an electric vehicle is also provided. Figure 5 This is a structural block diagram of a charging control device for an electric vehicle according to an embodiment of the present invention, such as... Figure 5 As shown, the charging control device for the electric vehicle includes: an acquisition module 502, an adjustment module 504, a judgment module 506, and a charging module 508. The charging control device for the electric vehicle will be described below.

[0081] The acquisition module 502 is used to acquire the maximum single-cell voltage detection value among multiple single-cell batteries at the current moment during the charging process of the electric vehicle, as well as the maximum single-cell voltage detection value of the previous moment.

[0082] The adjustment module 504, connected to the acquisition module 502, is used to adjust the reference value of the maximum single-cell voltage at the previous moment based on the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment, so as to obtain the reference value of the maximum single-cell voltage at the current moment.

[0083] The judgment module 506, connected to the adjustment module 504, is used to determine whether the current maximum single-cell voltage reference value exceeds the preset full-charge voltage.

[0084] The charging module 508, connected to the judgment module 506, is used to charge the electric vehicle with a current lower than a preset threshold when the maximum single-cell voltage reference value at the current moment exceeds the full-charge voltage.

[0085] It should be noted that the acquisition module 502, adjustment module 504, judgment module 506, and charging module 508 mentioned above correspond to steps S202 to S208 in the embodiments. Multiple modules and their corresponding steps implement the same instances and application scenarios, but are not limited to the content disclosed in the above embodiments. It should also be noted that the above modules, as part of the device, can run in the computer terminal 10 provided in the embodiments.

[0086] Embodiments of the present invention may provide a computer device. Optionally, in this embodiment, the computer device may be located in at least one of a plurality of network devices in a computer network. The computer device includes a memory and a processor.

[0087] The memory can be used to store software programs and modules, such as the program instructions / modules corresponding to the electric vehicle charging control method and device in this embodiment of the invention. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory, thereby realizing the aforementioned electric vehicle charging control method. The memory may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory may further include memory remotely located relative to the processor, and these remote memories can be connected to a computer terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0088] The processor can access the information and application program stored in the memory via the transmission device to perform the following steps: acquiring the maximum single-cell voltage detection value among multiple individual cells of the electric vehicle at the current moment during the charging process, and the maximum single-cell voltage detection value at the previous moment; adjusting the maximum single-cell voltage reference value at the previous moment based on the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment to obtain the maximum single-cell voltage reference value at the current moment; determining whether the maximum single-cell voltage reference value at the current moment exceeds the preset full-charge voltage; and charging the electric vehicle with a current lower than the preset threshold if the maximum single-cell voltage reference value at the current moment exceeds the full-charge voltage.

[0089] Optionally, the processor may also execute program code that performs the following steps: based on the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment, adjust the maximum single-cell voltage reference value at the previous moment to obtain the maximum single-cell voltage reference value at the current moment, including: when the maximum single-cell voltage detection value at the current moment does not exceed the preset voltage difference between the maximum single-cell voltage detection value at the previous moment, control the maximum single-cell voltage reference value at the current moment to be the same as the maximum single-cell voltage reference value at the previous moment.

[0090] Optionally, the processor may also execute program code that performs the following steps: based on the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment, adjust the maximum single-cell voltage reference value at the previous moment to obtain the maximum single-cell voltage reference value at the current moment, including: if the maximum single-cell voltage detection value at the current moment exceeds the maximum single-cell voltage detection value at the previous moment by a preset voltage difference, determine the sum of the maximum single-cell voltage reference value at the previous moment and the preset voltage difference as the maximum single-cell voltage reference value at the current moment.

[0091] Optionally, the processor may also execute program code that performs the following steps: if the maximum single-cell voltage reference value at the current moment does not exceed the full-charge voltage, determine the target charging current for the electric vehicle based on the maximum single-cell voltage reference value at the current moment; and charge the electric vehicle based on the target charging current.

[0092] Optionally, the processor may also execute program code that performs the following steps: detects whether the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment both exceed the full charge voltage; and stops charging the electric vehicle if the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment both exceed the full charge voltage.

[0093] Optionally, the processor may also execute program code that performs the following steps: determining whether the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment both exceed a preset fault voltage threshold; if the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment both exceed the fault voltage threshold, setting the charging current of the electric vehicle to 0A and generating a warning prompt.

[0094] Optionally, the processor may also execute program code that performs the following steps: when the electric vehicle is in the process of charging, controls the charging indicator light to be in the charging process state; when the electric vehicle is in the process of charging or the charging current of the electric vehicle is 0A for a preset duration, controls the charging indicator light to be in the charging complete state.

[0095] This invention provides a charging control method for electric vehicles. The method involves acquiring the maximum single-cell voltage detection value among multiple individual cells at the current moment during the charging process, as well as the maximum single-cell voltage detection value at the previous moment. Based on these two values, a reference value for the maximum single-cell voltage at the previous moment is adjusted to obtain a reference value for the maximum single-cell voltage at the current moment. It then determines whether the reference value exceeds a preset full-charge voltage. If the reference value exceeds the full-charge voltage, a current below a preset threshold is used to charge the electric vehicle. This achieves the goal of continuing charging even when voltage fluctuations occur, thereby improving the charging efficiency and user experience of electric vehicles. Furthermore, it solves the technical problem of current lithium battery charging processes where charging stops even when the battery is not fully charged due to single-cell voltage fluctuations, but the system still displays "charging," leading to user misjudgment and affecting travel.

[0096] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing the hardware related to the terminal device. The program can be stored in a non-volatile storage medium, which may include: flash drive, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk, etc.

[0097] Embodiments of the present invention also provide a non-volatile storage medium. Optionally, in this embodiment, the aforementioned non-volatile storage medium can be used to store the program code executed by the charging control method for electric vehicles provided in the above embodiments.

[0098] Optionally, in this embodiment, the non-volatile storage medium may be located in any computer terminal in a group of computer terminals in a computer network, or in any mobile terminal in a group of mobile terminals.

[0099] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: obtaining the maximum single-cell voltage detection value among multiple single-cell batteries at the current moment during the charging process of the electric vehicle, and the maximum single-cell voltage detection value at the previous moment; adjusting the maximum single-cell voltage reference value at the previous moment based on the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment to obtain the maximum single-cell voltage reference value at the current moment; determining whether the maximum single-cell voltage reference value at the current moment exceeds a preset full-charge voltage; and charging the electric vehicle with a current lower than a preset threshold if the maximum single-cell voltage reference value at the current moment exceeds the full-charge voltage.

[0100] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: adjusting the maximum single-cell voltage reference value at the previous moment based on the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment to obtain the maximum single-cell voltage reference value at the current moment, including: controlling the maximum single-cell voltage reference value at the current moment to be the same as the maximum single-cell voltage reference value at the previous moment when the maximum single-cell voltage detection value at the current moment does not exceed a preset voltage difference between the maximum single-cell voltage detection value at the previous moment.

[0101] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: adjusting the maximum single-cell voltage reference value at the previous moment based on the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment to obtain the maximum single-cell voltage reference value at the current moment, including: when the maximum single-cell voltage detection value at the current moment exceeds a preset voltage difference of the maximum single-cell voltage detection value at the previous moment, determining the sum of the maximum single-cell voltage reference value at the previous moment and the preset voltage difference as the maximum single-cell voltage reference value at the current moment.

[0102] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: if the maximum single-cell voltage reference value at the current moment does not exceed the full charge voltage, determine the target charging current for charging the electric vehicle based on the maximum single-cell voltage reference value at the current moment; and charge the electric vehicle based on the target charging current.

[0103] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: detecting whether the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment both exceed the full charge voltage; and stopping charging the electric vehicle if the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment both exceed the full charge voltage.

[0104] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: determining whether the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment both exceed a preset fault voltage threshold; if the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment both exceed the fault voltage threshold, setting the charging current of the electric vehicle to 0A and generating a warning prompt.

[0105] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: when the electric vehicle is in the charging process, control the charging indicator light to be in the charging process state; when the electric vehicle is in the charging completed state or the charging current of the electric vehicle is 0A for a preset duration, control the charging indicator light to be in the charging completed state.

[0106] Embodiments of the present invention also provide a computer program product, including a computer program. Optionally, in this embodiment, when the computer program is executed by a processor, it can: acquire the maximum single-cell voltage detection value among multiple single-cell batteries at the current moment during the charging process of an electric vehicle, and the maximum single-cell voltage detection value at the previous moment; adjust the maximum single-cell voltage reference value at the previous moment based on the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment to obtain the maximum single-cell voltage reference value at the current moment; determine whether the maximum single-cell voltage reference value at the current moment exceeds a preset full-charge voltage; and if the maximum single-cell voltage reference value at the current moment exceeds the full-charge voltage, charge the electric vehicle with a current lower than a preset threshold.

[0107] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0108] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0109] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0110] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0111] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0112] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a non-volatile storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0113] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A charging control method for an electric vehicle, characterized in that, include: The maximum single-cell voltage detection value among multiple individual cells in the electric vehicle at the current moment during the charging process is obtained, as well as the maximum single-cell voltage detection value of the previous moment. Based on the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment, the reference value of the maximum single-cell voltage at the previous moment is adjusted to obtain the reference value of the maximum single-cell voltage at the current moment. Determine whether the current maximum single-cell voltage reference value exceeds the preset full-charge voltage; If the maximum single-cell voltage reference value at the current moment exceeds the full charge voltage, the electric vehicle is charged with a current lower than a preset threshold.

2. The method according to claim 1, characterized in that, The step of adjusting the maximum single-cell voltage reference value from the previous moment based on the current maximum single-cell voltage detection value and the previous moment's maximum single-cell voltage detection value to obtain the current maximum single-cell voltage reference value includes: If the maximum single-cell voltage detection value at the current moment does not exceed the maximum single-cell voltage detection value at the previous moment, the maximum single-cell voltage reference value at the current moment is controlled to be the same as the maximum single-cell voltage reference value at the previous moment.

3. The method according to claim 1, characterized in that, The step of adjusting the maximum single-cell voltage reference value from the previous moment based on the current maximum single-cell voltage detection value and the previous moment's maximum single-cell voltage detection value to obtain the current maximum single-cell voltage reference value includes: If the maximum single-cell voltage detection value at the current moment exceeds a preset voltage difference between the maximum single-cell voltage detection value at the previous moment, the sum of the maximum single-cell voltage reference value at the previous moment and the preset voltage difference is determined as the maximum single-cell voltage reference value at the current moment.

4. The method according to claim 1, characterized in that, Also includes: If the maximum single-cell voltage reference value at the current moment does not exceed the full-charge voltage, the target charging current for charging the electric vehicle is determined based on the maximum single-cell voltage reference value at the current moment. The electric vehicle is charged based on the target charging current.

5. The method according to claim 1, characterized in that, Also includes: Detect whether the maximum single-cell voltage at the current moment and the maximum single-cell voltage at the previous moment both exceed the full charge voltage; If the maximum single-cell voltage detected at the current moment and the maximum single-cell voltage detected at the previous moment both exceed the full charge voltage, charging of the electric vehicle shall be stopped.

6. The method according to claim 1, characterized in that, Also includes: Determine whether the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment both exceed a preset fault voltage threshold; If both the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment exceed the fault voltage threshold, the charging current of the electric vehicle is set to 0A and a warning message is generated.

7. The method according to any one of claims 1 to 6, characterized in that, Also includes: When the electric vehicle is in the process of charging, the charging indicator light is controlled to be in the charging process state; When the electric vehicle is in the charging completed state or the charging current of the electric vehicle is 0A for a preset duration, the charging indicator light is controlled to be in the charging completed state.

8. A charging control device for an electric vehicle, characterized in that, include: The acquisition module is used to acquire the maximum single-cell voltage detection value among multiple single-cell batteries at the current moment during the charging process of the electric vehicle, as well as the maximum single-cell voltage detection value at the previous moment. The adjustment module is used to adjust the maximum single-cell voltage reference value at the previous moment based on the maximum single-cell voltage detection value at the current moment and the maximum single-cell voltage detection value at the previous moment, so as to obtain the maximum single-cell voltage reference value at the current moment. The judgment module is used to determine whether the current maximum single-cell voltage reference value exceeds the preset full charge voltage; The charging module is used to charge the electric vehicle with a current lower than a preset threshold when the maximum single-cell voltage reference value at the current moment exceeds the full charge voltage.

9. A non-volatile storage medium, characterized in that, The non-volatile storage medium includes a stored program, wherein, when the program is executed, it controls the device containing the non-volatile storage medium to perform the charging control method of the electric vehicle according to any one of claims 1 to 7.

10. A computer device, characterized in that, include: Memory and processor The memory stores computer programs; The processor is configured to execute a computer program stored in the memory, wherein when the computer program is executed, the processor performs the charging control method for the electric vehicle according to any one of claims 1 to 7.

11. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the charging control method for the electric vehicle according to any one of claims 1 to 7.

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