Battery charging control method and system

Abstract

The present disclosure provides a battery charging control method and system. The method may include: obtaining a first actual charging current of a battery when charging a vehicle; in response to the first actual charging current satisfying a target condition, obtaining a first difference current between the first actual charging current and a target charging current, wherein the target charging current is the charging current required by the vehicle; compensating the actual charging current based on the first difference current to obtain a second actual charging current, wherein the second actual charging current does not exceed the upper limit charging current of the battery at its current state of charge; and controlling the charging of the vehicle based on the second actual charging current. The present invention solves the technical problem of low battery charging efficiency.

Description

Technical Field

[0001] The present disclosure relates to the field of intelligent control, and in particular to a battery charging control method and system. Background Art

[0002] At present, with the promotion and application of new energy vehicles, due to the diversification of vehicle charging methods and the increasing demand for customized charging functions, there is a lack of design for functional compatibility of multiple charging methods, and a lack of design for safe and efficient charging demand control during various charging processes. As a result, there is a technical problem of low battery charging efficiency.

[0003] Currently, no effective solution has been proposed to the technical problem of low charging efficiency of the above-mentioned batteries. Summary of the Invention

[0004] Embodiments of the present invention provide a battery charging control method and system to at least solve the technical problem of low battery charging efficiency.

[0005] According to one aspect of an embodiment of the present invention, a battery charging control method is provided, comprising: obtaining a first actual charging current of the battery when charging a vehicle; in response to the first actual charging current satisfying a target condition, obtaining a first difference current between the first actual charging current and a target charging current, wherein the target charging current is the charging current required by the vehicle; compensating the actual charging current based on the first difference current to obtain a second actual charging current, wherein the second actual charging current does not exceed the upper limit charging current of the battery in the current state of charge; and controlling the charging of the vehicle based on the second actual charging current.

[0006] Optionally, the method further includes: in response to the current state of charge value being within a first threshold range, determining an upper limit charging current corresponding to the first threshold range.

[0007] Optionally, the actual charging current is compensated based on the first difference current to obtain a second actual charging current. The method includes: in response to the first difference current being within a second threshold range, determining current compensation data corresponding to the second threshold range; and compensating the actual charging current based on the current compensation data to obtain the second actual charging current.

[0008] Optionally, determining that the first actual charging current meets the target condition includes at least one of the following: obtaining the average charging current of the battery during the first time period of charging the vehicle; obtaining a second difference current between the average charging current and the actual charging current; in response to the second difference current being less than the first threshold for a duration greater than a first predetermined duration, setting the first flag position to the target value; determining that the first actual charging current meets the target condition based on the first flag position being the target value; obtaining the charging current change rate of the battery during the first time period of charging the vehicle; in response to the charging current change rate being less than the second threshold for a duration greater than a second predetermined duration, setting the second flag position to the target value; determining that the first actual charging current meets the target condition based on the second flag position being the target value; in response to the first difference current being greater than a third threshold, setting the third flag position to the target value; determining that the first actual charging current complies with the target condition based on the third flag position being the target value.

[0009] Optionally, the method further includes: in response to the second actual charging current being greater than or equal to a fourth threshold, and / or in response to the third difference current between the output current of the battery and the target charging current being greater than or equal to a fifth threshold, ending the compensation of the actual charging current.

[0010] Optionally, the method further includes: determining a target charging current based on a load operating current of the vehicle.

[0011] Optionally, the method further includes: uploading charging data of the battery when charging the vehicle to the server, so that the server at least runs the charging data to obtain an operation result.

[0012] Optionally, the operation result is verified by the server to obtain a verification result, which is used to enable the server to determine the charging parameters and control the charging of the vehicle based on the second actual charging current. The method includes: controlling the charging of the vehicle based on the second actual charging current and the charging parameters sent by the server.

[0013] According to another aspect of an embodiment of the present invention, a battery charging control device is provided, including: an acquisition unit for acquiring a first actual charging current of the battery when charging a vehicle; a response unit for acquiring a first difference current between the first actual charging current and a target charging current in response to the first actual charging current satisfying a target condition, wherein the target charging current is the charging current required by the vehicle; a compensation unit for compensating the actual charging current based on the first difference current to obtain a second actual charging current, wherein the second actual charging current does not exceed the upper limit charging current of the battery in the current state of charge; and a control unit for controlling the charging of the vehicle based on the second actual charging current.

[0014] According to another aspect of an embodiment of the present invention, a battery charging control system is provided, including: a server for obtaining charging parameters of a vehicle; a client for obtaining a first actual charging current of the battery when charging the vehicle; in response to the first actual charging current satisfying a target condition, obtaining a first difference current between the first actual charging current and a target charging current, wherein the target charging current is the charging current required by the vehicle; compensating the actual charging current based on the first difference current to obtain a second actual charging current, wherein the second actual charging current does not exceed the upper limit charging current of the battery in the current state of charge; and controlling the charging of the vehicle based on the second actual charging current and the charging parameters.

[0015] According to another aspect of an embodiment of the present invention, a vehicle is provided for executing the battery charging control method according to an embodiment of the present disclosure.

[0016] According to another aspect of an embodiment of the present invention, a battery charging control device is provided, including: an acquisition unit for acquiring a first actual charging current of the battery when charging a vehicle; a response unit for acquiring a first difference current between the first actual charging current and a target charging current in response to the first actual charging current satisfying a target condition, wherein the target charging current is the charging current required by the vehicle; a compensation unit for compensating the actual charging current based on the first difference current to obtain a second actual charging current, wherein the second actual charging current does not exceed the upper limit charging current of the battery in the current state of charge; and a control unit for controlling the charging of the vehicle based on the second actual charging current.

[0017] According to another aspect of an embodiment of the present invention, a battery charging control system is provided. The system may include: a server for obtaining charging parameters of a vehicle; a client for obtaining a first actual charging current of the battery when charging the vehicle; in response to the first actual charging current satisfying a target condition, obtaining a first difference current between the first actual charging current and a target charging current, wherein the target charging current is the charging current required by the vehicle; compensating the actual charging current based on the first difference current to obtain a second actual charging current, wherein the second actual charging current does not exceed the upper limit charging current of the battery at the current state of charge; and controlling vehicle charging based on the second actual charging current and the charging parameters.

[0018] According to another aspect of an embodiment of the present invention, a vehicle is provided for executing the battery charging control method according to an embodiment of the present disclosure.

[0019] In an embodiment of the present invention, a first actual charging current of a battery when charging a vehicle is obtained; in response to the first actual charging current satisfying a target condition, a first difference current between the first actual charging current and the target charging current is obtained, wherein the target charging current is the charging current required by the vehicle; the actual charging current is compensated based on the first difference current to obtain a second actual charging current, wherein the second actual charging current does not exceed the upper limit charging current of the battery in the current state of charge; and the charging of the vehicle is controlled based on the second actual charging current. That is, in the present disclosure, during the charging process, the current charging current demand value is determined based on the difference between the real-time required charging current of the battery and the actual charging current, and in combination with the vehicle load working current value, thereby solving the technical problem of low charging efficiency of the battery and achieving the technical effect of improving the charging efficiency of the battery.

[0020] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are provided to facilitate a better understanding of the present invention and do not constitute a limitation of the present disclosure.

[0022] Figure 1 is a flow chart of a battery charging control method according to an embodiment of the present disclosure;

[0023] Figure 2 is a schematic diagram of another battery charging control method according to an embodiment of the present disclosure;

[0024] Figure 3 is a schematic diagram of a compatible multi-mode charging control architecture according to an embodiment of the present disclosure;

[0025] Figure 4 is a schematic diagram of a method for automatically identifying charging demand compensation control according to an embodiment of the present disclosure;

[0026] Figure 5 is a schematic diagram of a cloud-edge collaborative intelligent charging management method according to an embodiment of the present disclosure;

[0027] Figure 6 4 is a schematic diagram of a battery charging control device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0029] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] Example 1

[0031] The following describes a battery charging control method according to an embodiment of the present disclosure.

[0032] Figure 1 is a flow chart of a battery charging control method according to an embodiment of the present disclosure, such as Figure 1 As shown, the method may include the following steps:

[0033] Step S101: obtaining a first actual charging current of the battery when charging a vehicle.

[0034] In the technical solution provided in the above step S101 of the present disclosure, the first actual charging current of the battery when charging the vehicle can be obtained. For example, when charging the vehicle, the first actual charging current of the battery when charging the vehicle is collected in real time through the current acquisition module.

[0035] In this embodiment, the charging method of the first actual current can be AC ​​charging, DC charging, wireless charging, and charging in a battery swap station, and no specific restrictions are made here.

[0036] Step S102 : In response to the first actual charging current satisfying the target condition, a first difference current between the first actual charging current and a target charging current is obtained, wherein the target charging current is the charging current required by the vehicle.

[0037] In the technical solution provided in the above step S102 of the present disclosure, during the charging process of the vehicle, the current charging current demand value can be determined based on the difference between the real-time required charging current of the battery and the actual charging current, and combined with the working current value of the vehicle load.

[0038] In this embodiment, in response to the first actual charging current satisfying the target condition, a first difference current between the first actual charging current and the target charging current can be obtained. For example, when it is detected that the first actual current satisfies the target condition, a signal representing the information is generated, and in response to the signal, the first difference current between the first actual charging current and the target charging current is obtained.

[0039] In this embodiment, the target condition may be a condition for starting the automatic compensation control function for charging demand, and the start condition may be at least one of the following: the current stability condition is satisfied, the charging current change rate condition is satisfied, and the charging current difference condition is satisfied, all of which are set to 1.

[0040] In this embodiment, the target charging current may be the real-time required charging current, and the difference current may be the difference between the real-time required charging current and the actual charging current. The actual required charging current value may be obtained by table lookup or model calculation, and no specific limitation is given here.

[0041] Step S103 : compensating the actual charging current based on the first difference current to obtain a second actual charging current, wherein the second actual charging current does not exceed an upper limit charging current of the battery under the current state of charge.

[0042] In the technical solution provided in the above step S103 of the present disclosure, the charging demand current compensation upper limit value can be set according to the battery state of charge (SOC) value and the minimum temperature value during the charging process, wherein the battery SOC is used to represent the remaining capacity of the battery, and its numerical value can be defined as the ratio of the remaining capacity to the battery capacity.

[0043] In this embodiment, the second actual charging current may be a compensated actual charging current, and the actual charging current may be compensated based on the first difference current to obtain the second actual charging current. For example, after calculating the difference between the real-time required charging current and the actual charging current, the actual charging current may be compensated based on the difference to obtain the second actual charging current.

[0044] In this embodiment, the second actual charging current does not exceed the upper limit charging current of the battery under the current state of charge. For example, the actual charging current after compensation will not exceed the upper limit charging current of the battery under the current state of charge. The upper limit value of the compensation current can be formulated according to the multiple SOC segments that can be divided according to different battery capacities.

[0045] Step S104: Control charging of the vehicle based on the second actual charging current.

[0046] In the technical solution provided in the above step S104 of the present disclosure, after determining the current charging current demand value based on the difference between the real-time required charging current of the battery and the actual charging current, and combining the working current value of the vehicle load, the current actual charging current is compensated to obtain a second actual charging current.

[0047] In this embodiment, the charging of the vehicle may be controlled based on the second actual charging current, for example, the charging of the vehicle may be controlled based on the compensated actual charging current.

[0048] Through the above steps S101 to S104, a first actual charging current of the battery when charging the vehicle is obtained; in response to the first actual charging current satisfying the target condition, a first difference current between the first actual charging current and the target charging current is obtained, wherein the target charging current is the charging current required by the vehicle; the actual charging current is compensated based on the first difference current to obtain a second actual charging current, wherein the second actual charging current does not exceed the upper limit charging current of the battery in the current state of charge; the charging of the vehicle is controlled based on the second actual charging current. That is to say, in the present disclosure, during the charging process, the current charging current demand value is determined based on the difference between the real-time required charging current of the battery and the actual charging current, and combined with the vehicle load working current value, thereby solving the technical problem of low charging efficiency of the battery and achieving the technical effect of improving the charging efficiency of the battery.

[0049] The above method of this embodiment is further described in detail below.

[0050] As an optional implementation, in response to the current state of charge value being within a first threshold range, an upper limit charging current corresponding to the first threshold range is determined.

[0051] In this embodiment, in response to the current state of charge value being within the first threshold range, the upper limit charging current corresponding to the first threshold range can be determined. For example, when it is detected that the current state of charge value is within the first threshold range, a signal is generated to represent the information, and in response to the signal, the upper limit charging current corresponding to the first threshold range is determined.

[0052] In this embodiment, the first threshold range may be a plurality of state of charge (SOC) segments divided according to different battery capacities, and the plurality of state of charge (SOC) segments divided according to different battery capacities specify an upper limit value of the compensation current.

[0053] For example, when SOC≥SOC1, the upper limit value of the compensation current is 0A, and the value range of SOC1 is 90% to 95%; when SOC2≤SOC<SOC1, the upper limit value of the compensation current is I4, the value range of I4 is 10A to 20A, and the value range of SOC2 is 70% to 80%; when SOC<SOC2, the upper limit value of the compensation current is I5, and the value range of I5 is 20A to 30A.

[0054] In this embodiment, by responding that the value of the current state of charge is within the first threshold range, the upper limit charging current corresponding to the first threshold range is determined, which can prevent overcharging, thereby achieving the effect of reducing the risk of battery overcharging while improving the charging efficiency.

[0055] As an optional implementation manner, in step S103, the actual charging current is compensated based on the first differential current to obtain a second actual charging current. The method includes: responding that the first differential current is within the second threshold range, and determining current compensation data corresponding to the second threshold range; compensating the actual charging current based on the current compensation data to obtain a second actual charging current.

[0056] In this embodiment, it is possible to respond that the first differential current is within the second threshold range, and determine current compensation data corresponding to the second threshold range. For example, when it is detected that the first differential current is within the second threshold range, a signal for indicating this information is generated, and in response to this signal, the current compensation data corresponding to the second threshold range is determined.

[0057] In this embodiment, the current compensation data may be a current compensation rate.

[0058] In this embodiment, the actual charging current can be compensated based on the current compensation data to obtain a second actual charging current. For example, the stability of the current charging current is judged based on the current compensation rate, and according to the range of the first differential current value (ΔI), the charging current request signal actually sent to the charging device is adjusted.

[0059] For example, when ΔI>ΔI1, the actual requested current is increased at a rate of i1A / s; when ΔI2<ΔI≤ΔI1, the actual requested current remains unchanged; when ΔI≤ΔI2, the actual requested current is decreased at a rate of i2A / s; when ΔI<0A and the duration is t3, the actual requested current is equal to the actual required charging current value of the battery.

[0060] As an optional embodiment, determining that the first actual charging current meets the target condition includes at least one of the following: obtaining the average charging current of the battery during the first time period of charging the vehicle; obtaining a second difference current between the average charging current and the actual charging current; in response to the second difference current being less than the first threshold for a duration greater than a first predetermined duration, setting the first flag position to the target value; determining that the first actual charging current meets the target condition based on the first flag position being the target value; obtaining the charging current change rate of the battery during the first time period of charging the vehicle; in response to the charging current change rate being less than the second threshold for a duration greater than a second predetermined duration, setting the second flag position to the target value; determining that the first actual charging current meets the target condition based on the second flag position being the target value; in response to the first difference current being greater than a third threshold, setting the third flag position to the target value; determining that the first actual charging current complies with the target condition based on the third flag position being the target value.

[0061] In this embodiment, the average charging current of the battery during the first time period of charging the vehicle can be obtained, and a second difference current between the average charging current and the actual charging current can be obtained. Then, in response to the second difference current being less than the first threshold value for a duration greater than a first predetermined duration, the first flag position is set to the target value, and then based on the first flag position being the target value, it is determined that the first actual charging current meets the target condition. For example, after charging starts, the difference between the average value of the real-time charging current within time t1 and the real-time charging current is calculated. When the difference is less than I1 and the maintenance time is greater than t2, the charging current stability condition is met and the flag position is 1; otherwise, the charging current stability condition is met and the flag position is 0.

[0062] In this embodiment, the charging current change rate of the battery during the first time period of charging the vehicle can be obtained, and then in response to the charging current change rate being less than the second threshold value for a duration greater than a second predetermined time period, the second flag position is set to the target value, and then based on the second flag position being the target value, it is determined that the first actual charging current meets the target condition. For example, after obtaining the charging current change rate of the battery during the first time period of charging the vehicle, when it is detected that the charging current change rate is less than the second threshold value for a duration greater than the second predetermined time period, a signal for representing the information is generated, and in response to the signal, the second flag position is set to the target value, and then based on the second flag position being the target value, it is determined that the first actual charging current meets the target condition.

[0063] For example, the real-time charging current change rate within time t1 is calculated. When the real-time charging current change rate is less than 12A / s and the duration is greater than t4, the current change rate condition is satisfied and the flag position is 1; otherwise, the charging current change rate condition is satisfied and the flag position is 0.

[0064] In this embodiment, in response to the first difference current being greater than the third threshold value, the third flag bit is set to the target value, and then the first actual charging current is determined to be in accordance with the target condition based on the third flag bit being the target value. For example, when it is detected that the first difference current is greater than the third threshold value, a signal representing the information is generated, and in response to the signal, the third flag bit is set to the target value, and then the first actual charging current is determined to be in accordance with the target condition based on the third flag bit being the target value.

[0065] For example, the difference between the real-time charging current and the actual charging current value (MAP) required by the charging battery is calculated. When the difference is greater than 13A, the charging current difference condition is satisfied and the flag position is 1; otherwise, the charging current difference condition is satisfied and the flag position is 0.

[0066] As an optional embodiment, the method also includes: in response to the second actual charging current being greater than or equal to a fourth threshold, and / or in response to the third difference current between the output current of the battery and the target charging current being greater than or equal to a fifth threshold, ending the compensation of the actual charging current.

[0067] In this embodiment, compensation for the actual charging current can be terminated in response to the second actual charging current being greater than or equal to a fourth threshold value, and / or in response to the third difference current between the output current of the battery and the target charging current being greater than or equal to a fifth threshold value. For example, when it is detected that the second actual charging current is greater than or equal to the fourth threshold value, and / or the third difference current between the output current of the battery and the target charging current is greater than or equal to the fifth threshold value, a signal for indicating the information is generated, and compensation for the actual charging current is terminated in response to the signal.

[0068] For example, when the real-time charging current ≥ the actual required charging current value of the battery * K, the real-time charging current overcurrent flag is set to 1, otherwise, the real-time charging current overcurrent flag is set to 0, where K is the charging overcurrent protection coefficient; when |charging device output current - actual required charging current value of the battery ≥ I6, the charging device output current overcurrent flag is set to 1, otherwise, the charging device output current overcurrent flag is set to 0. When the real-time charging current overcurrent flag or the charging device output current overcurrent flag is set to 1, the charging demand self-compensation control function is turned off.

[0069] As an optional implementation, the method further includes: determining a target charging current based on a load operating current of the vehicle.

[0070] In this embodiment, the target charging current can be determined based on the vehicle's load operating current. For example, during the charging process, the current charging current requirement value is determined based on the difference between the battery's real-time required charging current and the actual charging current, combined with the vehicle's load operating current value.

[0071] As an optional implementation, the method further includes: uploading charging data of the battery when charging the vehicle to the server, so that the server at least runs the charging data to obtain an operation result.

[0072] In this embodiment, the charging data of the battery when charging the vehicle can be uploaded to the server, so that the server can at least run the charging data and obtain the operation results. For example, a charging verification function is added to the cloud, and the charging control function is synchronously run in the cloud through the charging data uploaded by the edge.

[0073] In this embodiment, the charging data includes but is not limited to the maximum charging current / voltage of the charging device, the charging current response rate, the high voltage matching parameters of the charging device, and the charging time.

[0074] As an optional implementation, the operation result is verified by the server to obtain a verification result, which is used to enable the server to determine the charging parameters and control the charging of the vehicle based on the second actual charging current. The method includes: controlling the charging of the vehicle based on the second actual charging current and the charging parameters sent by the server.

[0075] In this embodiment, the operation results can be verified by the server to obtain verification results. The verification results are used to enable the server to determine the charging parameters and control the charging of the vehicle based on the second actual charging current. For example, the charging data uploaded by the edge is used to synchronously run the charging control function in the cloud, and the same charging control architecture as the edge is used to monitor and verify the edge and cloud operation results and compare them with the charging time.

[0076] For example, adding protection encryption strategies to the cloud-on-vehicle edge (cloud-edge) interaction data can ensure the security of data transmission and provide double protection for charging control. It can also perform multi-sample charging data statistics through the cloud, thereby optimizing the charging control function of the edge. In addition, the cloud data monitoring platform can also identify the capabilities of charging equipment in different regions and brands, as well as power consumption statistics in different time periods, and send information such as charging equipment capability statistical parameters and charging demand safety protection parameters to the edge. The data collaborative interaction module will perform data analysis and verification, and interact with the charging demand calculation module to realize intelligent management of cloud-edge collaborative charging needs.

[0077] In this embodiment, the charging of the vehicle may be controlled based on the second actual charging current and the charging parameters sent by the server. For example, the charging of the vehicle may be controlled based on the compensated actual charging current and the charging parameters sent by the server.

[0078] This embodiment controls the charging of the vehicle based on the second actual charging current and the charging parameters sent by the server. In this way, the capabilities of charging equipment in different regions and brands can be identified through the cloud data monitoring platform, and intelligent management of cloud-edge collaborative charging needs can be achieved to improve the charging efficiency of the battery.

[0079] In the above embodiment of the present disclosure, by judging whether the conditions for charging demand compensation control are met, after the charging demand compensation control function is turned on, the charging demand compensation value is calculated, and the compensation current upper limit value can be specified by dividing multiple charge state segments according to different battery capacities. Then, the current compensation rate adaptive adjustment strategy is executed, and then it is judged whether the conditions for charging demand compensation control are met to stop the charging demand compensation control, thereby solving the technical problem of low charging efficiency of the battery and achieving the technical effect of improving the charging efficiency of the battery.

[0080] Example 2

[0081] The battery charging control method disclosed herein is further described below in conjunction with preferred embodiments.

[0082] In related technologies, the charging methods for new energy vehicles mainly include DC charging, AC charging, wireless charging, and charging at battery swap stations. With the increase in the number of electric vehicles, the compatibility design of several charging methods in the control function architecture and the safe and efficient charging demand control during various charging processes are technical issues that need to be solved urgently.

[0083] The present disclosure provides a battery charging control method, device, system and vehicle, including a compatible multi-mode charging control architecture, a battery charging demand compensation self-identification control method, a cloud-edge collaborative intelligent charging management method, as well as a vehicle, battery system, battery management system, charging controller, battery energy storage charging control equipment, etc. that apply the battery charging control method.

[0084] Figure 2 is a schematic diagram of another battery charging control method according to an embodiment of the present disclosure, such as Figure 2 As shown, it includes a compatible multi-mode charging control architecture, a battery charging demand compensation self-identification control method, a cloud-edge collaborative intelligent charging management method, and a vehicle, battery system, battery management system, charging controller, battery energy storage charging control equipment, etc. that apply the battery charging control method.

[0085] Among them, the compatible multi-mode charging control architecture includes a charging mode identification module, a charging mode arbitration module, a charging start / stop control module, a charging interaction control module, a charging status judgment module, a charging demand calculation module, a charging demand output control module, a charging remaining time calculation module, a charging safety monitoring module, a data collaborative interaction module, a data acquisition and calculation module, a charging information display, and a user-defined operation function control module. The compatible multi-mode charging control architecture covers major charging methods such as DC charging, AC charging, wireless charging, and charging at battery swap stations. The charging efficiency of different charging modes is weighed and a charging mode arbitration module is added to efficiently control the charging process. Considering the reliability, availability, maintainability, and safety of the product, standard functions (standard processes required by national standards) are integrated and decoupled from scalable functions (charging demand calculation, charging information display, user-defined operation function control, cloud-edge collaborative interaction control, etc.). A charging safety module is added to monitor the entire charging process and operation links, ensuring efficient charging while strengthening the safety of process control.

[0086] The battery self-identification charging demand compensation control method is implemented by the charging demand calculation module in the charging control architecture, which may include a charging demand current compensation upper limit setting function, a compensation current rate adaptive adjustment function, and an on / off safety control function. The self-identification charging demand compensation control method includes but is not limited to main charging methods such as DC charging, AC charging, wireless charging, and charging in battery swap stations. The method of setting the charging demand current compensation upper limit by multiple SOC segments improves charging efficiency while reducing the risk of battery overcharging. According to the difference between the real-time charging current and the actual charging current required by the battery and the stability of the current, an adaptive adjustment strategy for the compensation current rate is added, which is compatible with the current response rates of different charging devices to prevent over-compensation (overcharging) or under-compensation (slow charging) of the charging current caused by different current response rates of the charging devices.

[0087] A cloud-edge collaborative intelligent charging management method includes: a cloud (①) and an edge (②), which implement charging control functions, monitoring and verification of edge and cloud operation results, charging data statistics (normal charging data, abnormal charging data, etc.), and data collaborative interaction. A charging verification function is added to the cloud. Using charging data uploaded by the edge, the charging control function is synchronously executed on the cloud. Using the same charging control architecture as the edge, edge and cloud operation results are monitored and verified, and charging time is compared. Encryption strategies are added to cloud-edge interaction data to ensure data transmission security. This method provides dual protection for charging control and allows for multi-sample charging data statistics to be collected on the cloud (①), thereby optimizing the charging control function on the edge (②). Furthermore, the cloud data monitoring platform identifies the capabilities of charging equipment in different regions and brands, as well as power consumption statistics over different time periods. Charging equipment capability statistics and charging demand safety protection parameters are transmitted to the edge. The data collaborative interaction module performs data analysis and verification, interacting with the charging demand calculation module to achieve intelligent cloud-edge collaborative charging demand management.

[0088] Figure 3 is a schematic diagram of a compatible multi-mode charging control system according to an embodiment of the present disclosure, such as Figure 3 As shown, the system may include a charging mode recognition module, a charging mode arbitration module, a charging start / stop control module, a charging interaction control module, a charging status judgment module, a charging demand calculation module, a charging demand output control module, a charging remaining time calculation module, a charging safety monitoring module, a data collaborative interaction module, a data acquisition and calculation module, a charging information display, and a user-defined operation function control module.

[0089] The following is an introduction to the various modules of the charging control architecture.

[0090] Data acquisition and calculation module: including single cell voltage acquisition module, battery temperature acquisition module, current acquisition module, SOC calculation module, used to collect and calculate the battery's single cell voltage maximum value, battery temperature maximum value, temperature average, current, SOC and other information in real time, and serve as the data basis for charging start / stop control, charging demand calculation, charging remaining time calculation, and charging safety monitoring module.

[0091] The charging mode recognition module is used to identify charging gun connection signals, wireless alignment signals, and mode signals in battery swap stations, including but not limited to AC charging, DC charging, wireless charging, and charging in battery swap stations, as data input for the charging mode punching module.

[0092] The charging mode arbitration module is used to prioritize the charging gun connection signal, wireless alignment signal, and mode signal within the battery swap station output by the charging mode identification module, and switch the charging mode according to the charging process interaction status output by the charging interaction control module.

[0093] The charging start / stop control module determines charging start and stop based on battery cell voltage, temperature, current, SOC, and the current charging mode, combined with user-defined operational functions. This module outputs the charging cutoff SOC and charging cutoff protection voltage signals to the charging demand calculation, remaining charging time calculation, and charging safety monitoring modules.

[0094] The charging interaction control module includes but is not limited to a process control module that interacts with AC on-board charging equipment, DC charging equipment, wireless on-board charging equipment, and charging equipment in battery swap stations. It switches between different charging processes through the charging mode signal output by the charging mode arbitration module, and outputs a process interaction status signal to the charging status judgment, charging demand calculation, charging safety monitoring, and charging mode arbitration module. This module can also include process interaction control for high-voltage boost charging of the battery platform.

[0095] The charging status judgment module is used to judge the current charging status, namely idle, charging, normal charging completion, or abnormal charging stop, based on the process control status output by the charging interaction control module and the safety control status output by the charging safety monitoring module, and output the charging status information to the charging information display module.

[0096] The charging demand calculation module is used to calculate the actual required charging current and voltage of the battery based on the battery cell voltage, temperature, current, SOC and other data as well as the current charging mode through offline table lookup or model calculation. In combination with the battery self-identification charging demand compensation control method, it can accurately calculate the battery charging demand in real time. This module outputs the charging request voltage, charging request current, and charging request mode (constant voltage / constant current) to the charging safety monitoring, charging remaining time calculation, and data collaborative interaction modules. This module can also include the charging demand calculation function for high-voltage boost charging of the battery platform.

[0097] The charging demand output control module is used to combine the output limit signal of the charging safety module to achieve safe control of the battery charging demand, and output the charging request voltage, charging request current and charging request mode (constant voltage / constant current) to the charging device in the corresponding mode.

[0098] The remaining charging time calculation module is used to calculate the remaining charging time based on the battery cell voltage, temperature, current, SOC and other data as well as the current charging mode, combined with the charging demand, and output the remaining charging time information to the charging information display module.

[0099] The charging safety monitoring module is used to monitor the charging demand calculation, charging interaction control, charging start / stop control, user-defined operation function control, data collaborative interaction, data acquisition and calculation module, and charging equipment interaction information in real time. When abnormalities in collected data, demand calculation, and charging interaction information are identified, the output of charging demand is restricted. If the abnormality is serious, the charging process and interaction with the charging equipment are stopped.

[0100] The data collaborative interaction module is used to realize the cloud-edge collaborative intelligent charging management function, receive the charging parameter data from the cloud data monitoring platform, perform data analysis and verification, and interact with the charging demand calculation module to collaboratively manage charging demand.

[0101] The charging information display module is used to receive the charging status and remaining charging time information, perform data conversion processing, and display it on the edge display device or other client devices.

[0102] The user-defined operation function control module is used to convert and process the control signals of charging start / stop conditions or other charging information set by the user through the operation edge control interface or other client devices, and output them to the charging start / stop control module and the charging safety monitoring module.

[0103] Figure 4 is a schematic diagram of a method for automatically identifying charging demand compensation control according to an embodiment of the present disclosure, such as Figure 4 As shown, the method is implemented by a charging demand calculation module in a charging control architecture, and the method may include the following steps:

[0104] Step S401: judging whether all the enabling conditions are met.

[0105] Step S402: Determine whether the charging demand compensation control is completed.

[0106] Step S403 : After the charging compensation control start condition is met, the compensation upper limit value is specified in sections according to the state of charge.

[0107] Step S404: Calculate the current compensation value.

[0108] Step S405: adjusting the compensation rate according to the current difference.

[0109] Among them, the charging demand calculation module used to realize the automatic identification of charging demand compensation control method includes: charging demand current compensation upper limit setting function, compensation current rate adaptive adjustment function, and on / off safety control function. During the charging process, the current charging current demand value is determined based on the difference between the battery's real-time required charging current and the actual charging current, and combined with the vehicle load working current value.

[0110] The opening conditions for enabling / disabling the security control function are introduced below.

[0111] Opening condition 1: After charging starts, calculate the difference between the average value of the real-time charging current and the real-time charging current within the time t1. When the difference is less than I1 and the duration is greater than t2, the flag for the charging current stability condition is set to 1; otherwise, the flag for the charging current stability condition is set to 0.

[0112] Opening condition 2: Calculate the change rate of the real-time charging current within the time t1. When the change rate of the real-time charging current is less than I2 A / s and the duration is greater than t4, the flag for the change rate of the charging current condition is set to 1; otherwise, the flag for the change rate of the charging current condition is set to 0.

[0113] Opening condition 3: Calculate the difference between the real-time charging current and the charging MAP current (the actual charging current value required by the battery). When the difference is greater than I3 A, the flag for the charging current difference condition is set to 1; otherwise, the flag for the charging current difference condition is set to 0.

[0114] When the flags for the charging current stability condition, the change rate of the charging current condition, and the charging current difference condition are all set to 1, the charging demand self-compensation control function is enabled.

[0115] The function of setting the upper limit of the charging demand current compensation is introduced below.

[0116] Step 1: Set the upper limit value of the charging demand current compensation according to the battery SOC value and the lowest temperature value during the charging process. For example, when SOC ≥ SOC1, the upper limit value of the compensation current is 0 A, and the value range of SOC1 is 90% - 95%; when SOC₂ ≤ SOC < SOC1, the upper limit value of the compensation current is I4, and the value range of I4 is 10 A - 20 A, and the value range of SOC₂ is 70% - 80%; when SOC < SOC₂, the upper limit value of the compensation current is I5, and the value range of I5 is 20 A - 30 A.

[0117] It should be noted that the upper limit value of the compensation current can be set for multiple SOC segments according to different battery capacities, not limited to the above SOC segmentation.

[0118] Step 2: Calculate the difference ΔI between the real-time charging current and the actual charging current required by the battery, ΔI = real-time charging current - actual charging current value required by the battery, where the actual charging current value required by the battery can be obtained by methods such as looking up a table or model calculation.

[0119] The function of adaptively adjusting the compensation current rate is introduced below.

[0120] Step 3: When the deviation of ΔI does not exceed ±2A within time t3, it can be determined that the charging current is stable at this time. According to the range of ΔI, the charging current request signal actually sent to the charging device is adjusted. For example, when ΔI>ΔI1, the actual requested current is increased at a rate of i1A / s; when ΔI2<ΔI≤ΔI1, the actual requested current remains unchanged; when ΔI≤ΔI2, the actual requested current is reduced at a rate of i2A / s; when ΔI<0A and maintained for time t3, the actual requested current is equal to the actual required charging current value of the battery, and its compensation charging current value does not exceed the compensation upper limit of the SOC stage.

[0121] When the actual required charging current value of the battery changes, the actual requested current is set equal to the actual required charging current value of the battery. After the real-time charging current stabilizes again, the start condition is met and steps 1 to 3 are repeated.

[0122] The following describes the stop conditions for turning on / off the safety control function.

[0123] Shutdown condition 1: When the real-time charging current ≥ the actual required charging current value of the battery * K, the real-time charging current overcurrent flag is set to 1; otherwise, the real-time charging current overcurrent flag is set to 0, where K is the charging overcurrent protection coefficient.

[0124] Shutdown condition 2: When |charging device output current - actual battery required charging current value ≥ I6, the charging device output current overcurrent flag position is 1, otherwise, the charging device output current overcurrent flag position is 0.

[0125] When the real-time charging current overcurrent flag or the charging device output current overcurrent flag is set to 1, the charging demand self-compensation control function is turned off.

[0126] Figure 5 is a schematic diagram of a cloud-edge collaborative intelligent charging management method according to an embodiment of the present disclosure, such as Figure 5 As shown, the method includes: cloud charging control function, function of monitoring and verifying edge and cloud operation results, charging data statistics function (normal charging data, abnormal charging data, etc.), and data collaborative interaction function.

[0127] A charging verification function is added to the cloud. Through the charging data uploaded by the edge, the charging control function is synchronously run in the cloud. Using the same charging control architecture as the edge, the edge and cloud operation results are monitored and verified, and compared with the charging time. A protection encryption strategy is added to the cloud-edge interaction data to ensure the security of data transmission. This method can provide dual protection for charging control and can also perform multi-sample charging data statistics through the cloud, thereby optimizing the charging control function of the edge. In addition, the cloud data monitoring platform can also identify the capabilities of charging equipment in different regions and brands, as well as power consumption statistics in different time periods, and send charging equipment capability statistical parameters, charging demand safety protection parameters and other information to the edge. The data collaborative interaction module performs data analysis and verification processing, and interacts with the charging demand calculation module to achieve intelligent management of cloud-edge collaborative charging needs.

[0128] The charging data that the cloud data monitoring platform and the edge collaboratively interact with include but are not limited to the maximum charging current / voltage of the charging device, the charging current response rate, the high-voltage matching parameters of the charging device, the charging time, etc. The addition of this module can optimize the user experience during charging and can be expanded to meet user-customized charging needs.

[0129] In the related technology, an AC / DC combined charging control system for electric vehicles is provided, including an AC / DC combined charging interface identification module, an AC / DC combined charging handshake module, a charging mode selection and parameter configuration module, a human-computer interaction module, a charging settlement module, and a charging exception handling module; it ensures that electric vehicles are reliably and flexibly connected to the power grid for charging. The use of AC / DC combined charging can improve the flexibility of charging, improve the utilization efficiency of charging parking spaces, and reduce the land construction area of ​​charging stations, thereby saving land and reducing infrastructure costs. The present disclosure proposes a charging control architecture compatible with multiple modes, adds a charging mode arbitration module, weighs the charging efficiency of different charging modes, and efficiently manages the charging process. The control interaction process is not only compatible with AC / DC charging, but also covers battery replacement, wireless charging and other modes, and uses interactive management with a cloud monitoring platform to improve charging efficiency.

[0130] A related art method for compensating charging current for a capacitive touch screen sensor provides the following: first, within a preset time T, each scan line of the capacitive touch screen is driven sequentially with a preset drive current I, and the signal voltage output of each scan line is measured; then, the signal voltage output is compared with a predetermined voltage value of the scan line to obtain a voltage deviation value; then, based on the preset capacitance operation value and the voltage deviation value, the current change difference is calculated, and finally, the actual drive current of each scan line of the capacitive touch screen is determined. This method can enhance the sensitivity of touch sensing, making the processing process quick and convenient, and the working performance stable and reliable. However, the present disclosure uses the difference between the real-time charging current and the actual charging demand of the battery for compensation calculation, rather than the voltage deviation value, to avoid the influence of voltage sampling error and improve compatibility with functional application objects.

[0131] In the related technology, a charging pile system that can improve charging quality is provided. In this system, a surge protection device is connected to the input end of the charging power grid to eliminate instantaneous violent pulses when the charging pile is turned on; a harmonic filtering device is used to filter multiple harmonics of the charging voltage and current; an intelligent monitoring and control module is used to monitor and control the voltage and current of the power grid, the voltage and current of the circuit compensation module, and the voltage and current of the charging terminal module in real time; the circuit compensation module is used to compensate the charging voltage and current in real time; the charging terminal module charges the battery pack of the electric vehicle and communicates with the battery management system of the electric vehicle. The system can effectively resist interference, eliminate the harmonics of the charging system, track the charging status of the battery pack in real time, and control and adjust the charging current and voltage in real time, thereby improving the charging quality of the charging pile. The present disclosure adopts a method of setting the upper limit of the charging demand current compensation by multiple SOC segments, which improves the charging efficiency while reducing the risk of battery overcharging. Based on the difference between the real-time charging current and the actual charging current required by the battery, as well as the current stability, an adaptive compensation current rate adjustment strategy is added to be compatible with the current response rates of different charging devices, preventing overcompensation (overcharging) or undercompensation (slow charging) of the charging current caused by different current response rates of charging devices.

[0132] In the related art, a multi-level edge computing architecture based on cloud-edge collaboration and its implementation method are provided. The multi-level edge computing architecture based on the cloud-edge system includes a core cloud data center, edge data nodes, and distribution network and user side devices. The edge data nodes collect data based on the rule of collecting data nearby and upload the collected data to the core cloud data center for data analysis and utilization in the core cloud data center. The edge data nodes include regional edge computing nodes and station-level edge computing nodes. The edge data nodes and the local distribution network and user-side configured power equipment and edge intermediate devices together form a three-level routing structure and transmit data based on high-speed power line carriers. The present disclosure adds a charging verification function to the cloud. Through the charging data uploaded by the edge, the charging control function is synchronously run in the cloud. The same charging control architecture as the edge is used to monitor and verify the edge and cloud operation results, and compare the charging time. The present invention can provide dual protection for charging control and can also perform multi-sample charging data statistics through the cloud, thereby optimizing the charging control function at the edge.

[0133] In the above-mentioned embodiments of the present disclosure, a battery charging control method, device, system and vehicle are provided, including: a compatible multi-mode charging control architecture, a battery charging demand compensation self-identification control method, a cloud-edge collaborative intelligent charging management method, and a vehicle, battery system, battery management system, charging controller, battery energy storage charging control equipment, etc. that apply the battery charging control method, thereby improving the compatibility of the charging control functions of various charging methods. Through self-identification charging demand compensation control, the charging time can be shortened while ensuring the battery charging safety. The cloud-edge collaborative intelligent management method is adopted to add double safety protection to the charging control function while adding a charging key parameter interaction strategy, which can optimize the user's charging experience, thereby solving the technical problem of low battery charging efficiency and achieving the technical effect of improving the battery charging efficiency.

[0134] Example 3

[0135] The present disclosure also provides a method for executing Figure 1 The embodiment shown provides a battery charging control method and a battery charging control device.

[0136] Figure 6 is a schematic diagram of a battery charging control device according to an embodiment of the present disclosure, such as Figure 6 As shown, the battery charging control device 60 may include: an acquisition unit 61 , a response unit 62 , a compensation unit 63 , and a control unit 64 .

[0137] an acquiring unit 61, configured to acquire a first actual charging current of the battery when charging the vehicle;

[0138] a response unit 62 for obtaining a first difference current between the first actual charging current and a target charging current in response to the first actual charging current satisfying a target condition, wherein the target charging current is a charging current required by the vehicle;

[0139] a compensation unit 63, configured to compensate the actual charging current based on the first difference current to obtain a second actual charging current, wherein the second actual charging current does not exceed an upper limit charging current of the battery under a current state of charge;

[0140] The control unit 64 controls charging of the vehicle based on the second actual charging current.

[0141] Optionally, the device further includes: a first response unit, configured to determine an upper limit charging current corresponding to the first threshold range in response to a current state of charge value being within a first threshold range.

[0142] Optionally, the compensation unit 63 includes: a first response module, used to determine current compensation data corresponding to the second threshold range in response to the first difference current being within the second threshold range; and a compensation module, used to compensate the actual charging current based on the current compensation data to obtain a second actual charging current.

[0143] Optionally, the device includes: a first determination unit, configured to determine whether the first actual current meets the target condition, wherein the first determination unit includes at least one of the following: a first determination module, a second determination module, and a third determination module, wherein the first determination module includes: a first acquisition submodule, configured to obtain an average charging current of the battery during a first duration of charging the vehicle; a second acquisition submodule, configured to obtain a second difference current between the average charging current and the actual charging current; a first response submodule, configured to set a first flag position as a target value in response to the second difference current being less than a first threshold value for a duration greater than a first predetermined duration; and a first determination submodule, configured to determine whether the first actual current meets the target condition based on the first flag position being the target value. The charging current meets the target condition; the second determination module includes: a third acquisition submodule, used to obtain the charging current change rate of the battery during the first time period of charging the vehicle; a second response submodule, used to set the second flag position to the target value in response to the charging current change rate being less than the second threshold value for a duration greater than the second predetermined time period; the second determination submodule, used to determine that the first actual charging current meets the target condition based on the second flag position being the target value; the third determination submodule includes: a third response submodule, used to set the third flag position to the target value in response to the first difference current being greater than the third threshold value; the third determination submodule, used to determine that the first actual charging current is in accordance with the target condition based on the third flag position being the target value.

[0144] Optionally, the device also includes: a second response unit, used to end compensating the actual charging current in response to the second actual charging current being greater than or equal to a fourth threshold, and / or in response to the third difference current between the output current of the battery and the target charging current being greater than or equal to a fifth threshold.

[0145] Optionally, the device further includes: a second determining unit, configured to determine a target charging current based on a load operating current of the vehicle.

[0146] Optionally, the device further includes: an uploading unit, configured to upload charging data of the battery when charging the vehicle to a server, so that the server at least runs the charging data to obtain an operation result.

[0147] Optionally, the operation result is verified by the server to obtain a verification result, which is used to enable the server to determine the charging parameters. The control unit 64 includes: a control module, which is used to control the charging of the vehicle based on the second actual charging current and the charging parameters sent by the server.

[0148] In the battery charging control device of this embodiment, the first actual charging current of the battery when charging the vehicle is obtained through the acquisition unit 61; the response unit 62, in response to the first actual charging current meeting the target condition, obtains a first difference current between the first actual charging current and the target charging current, wherein the target charging current is the charging current required by the vehicle; the compensation unit 63 compensates the actual charging current based on the first difference current to obtain a second actual charging current, wherein the second actual charging current does not exceed the upper limit charging current of the battery in the current state of charge; the control unit 64 controls the charging of the vehicle based on the second actual charging current and the charging parameters, thereby solving the technical problem of low charging efficiency of the battery and achieving the technical effect of improving the charging efficiency of the battery.

[0149] Example 4

[0150] According to an embodiment of the present invention, a battery charging control system is also provided. The system may include: a server for obtaining charging parameters of a vehicle; a client for obtaining a first actual charging current of the battery when charging the vehicle; in response to the first actual charging current satisfying a target condition, obtaining a first difference current between the first actual charging current and a target charging current, wherein the target charging current is the charging current required by the vehicle; compensating the actual charging current based on the first difference current to obtain a second actual charging current, wherein the second actual charging current does not exceed the upper limit charging current of the battery at the current state of charge; and controlling vehicle charging based on the second actual charging current and the charging parameters.

[0151] Example 5

[0152] According to an embodiment of the present disclosure, the present disclosure also provides a vehicle for executing the battery charging control method of the embodiment of the present disclosure.

[0153] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0154] In the above embodiments of the present invention, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0155] In the several embodiments provided in the present disclosure, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only exemplary. For example, the division of the units can be a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or models, which can be electrical or other forms.

[0156] The units described as separate components may or may not be physically separate, and 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 may be selected according to actual needs to achieve the purpose of the present embodiment.

[0157] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0158] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, 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. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk, etc. Various media that can store program codes.

[0159] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A battery charging control method, characterized in that: include: Obtaining a first actual charging current of the battery when charging the vehicle; In response to the first actual charging current satisfying a target condition, obtaining a first difference current between the first actual charging current and a target charging current; compensating the actual charging current based on the first difference current to obtain a second actual charging current, wherein the second actual charging current does not exceed an upper limit charging current of the battery under a current state of charge; controlling charging of the vehicle based on the second actual charging current; Wherein, determining whether the first actual charging current meets the target condition includes at least one of the following: obtaining the average charging current of the battery during the first time period of charging the vehicle; obtaining a second difference current between the average charging current and the actual charging current; in response to the second difference current being less than a first threshold for a duration greater than a first predetermined duration, setting a first flag position to a target value; determining that the first actual charging current meets the target condition based on the first flag position of the target value; obtaining the charging current change rate of the battery during the first time period of charging the vehicle; in response to the charging current change rate being less than a second threshold for a duration greater than a second predetermined duration, setting a second flag position to the target value; determining that the first actual charging current meets the target condition based on the second flag position of the target value.

2. The method according to claim 1, characterized in that The method further comprises: In response to the current state of charge value being within a first threshold range, the upper limit charging current corresponding to the first threshold range is determined.

3. The method according to claim 1, characterized in that Compensating the actual charging current based on the first difference current to obtain a second actual charging current includes: In response to the first difference current being within a second threshold range, determining current compensation data corresponding to the second threshold range; The actual charging current is compensated based on the current compensation data to obtain the second actual charging current.

4. The method according to claim 1, wherein The method further comprises: In response to the second actual charging current being greater than or equal to a fourth threshold, and / or in response to a third difference current between the output current of the battery and the target charging current being greater than or equal to a fifth threshold, compensating the actual charging current is terminated.

5. The method according to claim 1, wherein The method further comprises: The target charging current is determined based on a load operating current of the vehicle.

6. The method according to any one of claims 1 to 5, characterized in that The method further comprises: The charging data of the battery when charging the vehicle is uploaded to the server, so that the server at least runs the charging data to obtain an operation result.

7. The method according to claim 6, characterized in that The server verifies the operation result to obtain a verification result, and the verification result is used to enable the server to determine charging parameters and control charging of the vehicle based on the second actual charging current, including: Charging of the vehicle is controlled based on the second actual charging current and the charging parameters sent by the server.

8. A battery charging control system, characterized in that: include: The server is used to obtain the charging parameters of the vehicle; The client is configured to obtain a first actual charging current of the battery when charging the vehicle; In response to the first actual charging current satisfying a target condition, obtaining a first difference current between the first actual charging current and a target charging current; compensating the actual charging current based on the first difference current to obtain a second actual charging current, wherein the second actual charging current does not exceed an upper limit charging current of the battery at a current state of charge; and controlling charging of the vehicle based on the second actual charging current and the charging parameters; The client is also used to determine whether the first actual charging current meets the target condition, including at least one of the following: obtaining the average charging current of the battery during the first time period of charging the vehicle; obtaining a second difference current between the average charging current and the actual charging current; in response to the second difference current being less than a first threshold for a duration greater than a first predetermined duration, setting a first flag position to a target value; determining that the first actual charging current meets the target condition based on the first flag position of the target value; obtaining the charging current change rate of the battery during the first time period of charging the vehicle; in response to the charging current change rate being less than a second threshold for a duration greater than a second predetermined duration, setting a second flag position to the target value; determining that the first actual charging current meets the target condition based on the second flag position of the target value.

9. A vehicle, characterized in that: Used to execute the battery charging control method according to any one of claims 1 to 7.

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