Adjustable charging control method and system and electric vehicle

Abstract

The invention relates to the technical field of electric vehicle charging, and discloses an adjustable charging control method and system and an electric vehicle. The method comprises the steps that when a charging gun is inserted into a charging base, a vehicle-mounted charger generates a wake-up signal, and a battery management system, a vehicle control unit and an instrument are awakened through the wake-up signal; the vehicle-mounted charger obtains charging gun information of the charging gun and the battery rated voltage of the power battery, the battery management system sends charging request current to the vehicle-mounted charger, and the vehicle-mounted charger judges whether the maximum output current of the charging gun is matched with the charging request current or not according to the charging gun information, the battery information and the charging request information; and when the judgment result shows that the maximum output current of the charging gun is not matched with the charging request current, the instrument reminds a user to input a target request current. Therefore, by implementing the method and the device, a user can autonomously select the charging current according to the actual situation, and charging wires of different specifications can be matched by controlling the charging current, so that the flexibility and the safety of the charging process are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle charging, and in particular to an adjustable charging control method and system, and an electric vehicle. Background Art

[0002] Amid the surge in electrification of construction machinery, electric excavators, as core equipment, have drawn significant industry attention to the intelligent and compatible charging systems of their equipment. Current mainstream charging solutions utilize fixed-specification charging cables (e.g., 8A, 10A, 11A, 13A, etc.) coupled with a standard AC charging mode. Charging is achieved through interaction between an on-cable control box and an onboard charger (OBC). During this process, the vehicle's instrument cluster can only passively display the charging current, with no active control over the charging process. This situation forces users to frequently change charging cables to accommodate different socket specifications (e.g., household 10A and 16A sockets), resulting in significant complexity and potential safety hazards due to mismatched specifications.

[0003] In existing technology, the control logic of charging systems primarily revolves around "fixed current matching fixed cables." A cable control box transmits charging cable specifications, and the onboard charger executes the charging process according to preset parameters. While this solution meets basic charging needs, it has significant drawbacks: First, the charging cable specifications are tightly coupled to the socket type, requiring users to equip multiple sets of charging cables, increasing costs and management complexity. Second, the vehicle control system lacks the ability to adjust the charging current in real time, making it unable to dynamically optimize charging power based on the power supply environment. This leads to overcurrent risks under non-standard power conditions. Third, the instrumentation is limited to status display and lacks deep integration into the charging control chain, making it difficult to implement intelligent human-machine interaction to intervene in the charging process. Therefore, it is particularly important to develop a technical solution that can control the charging current to improve charging flexibility and safety. Summary of the Invention

[0004] The present invention provides an adjustable charging control method and system, and an electric vehicle, which can control the charging current to improve charging flexibility and safety.

[0005] In order to solve the above technical problems, the first aspect of the present invention discloses an adjustable charging control method, which is applied to an adjustable charging control system. The adjustable charging control system includes a charging base, an on-board charger, a battery management system, a vehicle controller, an instrument, and a power battery. The method includes: When the charging gun is inserted into the charging base, the on-board charger generates a wake-up signal and wakes up the battery management system, the vehicle controller and the instrument through the wake-up signal; The on-board charger obtains charging gun information of the charging gun and battery information of the power battery, wherein the charging gun information includes charging voltage and maximum output current of the charging gun, and the battery information includes rated battery voltage; The battery management system sends charging request information to the on-board charger, wherein the charging request information includes a charging request current; The on-board charger determines, based on the charging gun information, the battery information, and the charging request information, whether the maximum output current of the charging gun matches the charging request current, and obtains a determination result; When the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, the meter prompts the user to input a target request current.

[0006] As an optional embodiment, in the first aspect of the present invention, the on-board charger determines whether the maximum output current of the charging gun matches the charging request current based on the charging gun information, the battery information, and the charging request information, and obtains a judgment result, including: Obtaining a system energy conversion efficiency, and calculating a requested input power based on the system energy conversion efficiency, the requested charging current, and the rated voltage of the battery; Calculating the maximum input power of the charging gun according to the charging voltage and the maximum output current of the charging gun; Determine whether the requested input power is less than or equal to the maximum input power. When the requested input power is less than or equal to the maximum input power, determine that the maximum output current of the charging gun matches the charging request current. When the requested input power is greater than the maximum input power, determine that the maximum output current of the charging gun does not match the charging request current.

[0007] As an optional embodiment, in the first aspect of the present invention, when the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, the meter prompts the user to input a target requested current, including: When the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, the on-board charger determines a charging request current range that matches the charging gun based on the charging gun information and the battery rated voltage, and sends the charging request current range to the meter; The meter prompts the user to input a target requested current according to the charging requested current range; Furthermore, after the meter prompts the user to input a target requested current according to the charging requested current range, the method further includes: The meter obtains the target requested current input by the user and sends the target requested current to the on-board charger; The on-board charger selects a final current from the target requested current and the maximum output current of the charging gun according to a preset screening rule, and charges the power battery according to the final current; The on-board charger sends the final current to the meter, and the meter calculates charging information according to the final current and displays the charging information, where the charging information includes the remaining charging time.

[0008] As an optional embodiment, in the first aspect of the present invention, when the charging gun is inserted into the charging base, the method further includes: The on-board charger receives a charging gun connection signal sent by the charging gun, and activates a communication circuit of the on-board charger according to the charging gun connection signal; The on-board charger sends the charging gun connection signal to the battery management system through the communication circuit; Furthermore, after the on-board charger wakes up the battery management system, the vehicle controller, and the instrument through the wake-up signal, the method further includes: The on-board charger detects a position feedback signal of the charging gun lock, and determines whether the charging gun lock is closed according to the position feedback signal; When the charging gun lock is closed, the on-board charger is triggered to execute an operation of acquiring charging gun information of the charging gun.

[0009] As an optional embodiment, in the first aspect of the present invention, the adjustable charging control system further includes a power distribution box, and the power distribution box includes a charging relay; After the on-board charger wakes up the battery management system, the vehicle controller, and the instrument through the wake-up signal, the method further includes: The battery management system generates a control message and sends the control message to the vehicle controller; The vehicle controller controls the charging relay in the power distribution box to close according to the control message; Furthermore, the on-board charger obtains battery information of the power battery, including: The on-board charger obtains battery information of the power battery through the charging relay.

[0010] As an optional implementation manner, in the first aspect of the present invention, the on-board charger obtains the charging gun information of the charging gun, including: The on-board charger obtains the charging voltage and control guidance signal of the charging gun; The on-board charger determines a duty cycle corresponding to the charging gun according to the control guidance signal, and calculates a maximum output current of the charging gun according to the duty cycle.

[0011] A second aspect of the present invention discloses an adjustable charging control system, which includes a charging station, an on-board charger, a battery management system, a vehicle controller, an instrument, and a power battery. The on-board charger includes a first generation module, a first acquisition module, and a judgment module. The battery management system includes a first sending module. The instrument includes a reminder module, wherein: The first generating module is configured to generate a wake-up signal when a charging gun is inserted into the charging base, and wake up the battery management system, the vehicle controller, and the instrument through the wake-up signal; a first acquisition module, configured to acquire charging gun information of the charging gun and battery information of the power battery, wherein the charging gun information includes charging voltage and maximum output current of the charging gun, and the battery information includes rated battery voltage; a first sending module, configured to send charging request information to the on-board charger, wherein the charging request information includes a charging request current; a judgment module, configured to judge whether the maximum output current of the charging gun matches the charging request current based on the charging gun information, the battery information, and the charging request information, and obtain a judgment result; The reminder module is used to remind the user to input a target requested current when the judgment result indicates that the maximum output current of the charging gun does not match the charging requested current.

[0012] As an optional implementation manner, in the second aspect of the present invention, the judgment module determines whether the maximum output current of the charging gun matches the charging request current based on the charging gun information, the battery information, and the charging request information, and the manner of obtaining the judgment result specifically includes: Obtaining a system energy conversion efficiency, and calculating a requested input power based on the system energy conversion efficiency, the requested charging current, and the rated voltage of the battery; Calculating the maximum input power of the charging gun according to the charging voltage and the maximum output current of the charging gun; Determine whether the requested input power is less than or equal to the maximum input power. When the requested input power is less than or equal to the maximum input power, determine that the maximum output current of the charging gun matches the charging request current. When the requested input power is greater than the maximum input power, determine that the maximum output current of the charging gun does not match the charging request current.

[0013] As an optional implementation manner, in the second aspect of the present invention, when the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, the reminder module reminds the user to input the target requested current in a manner specifically including: When the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, the on-board charger determines a charging request current range that matches the charging gun based on the charging gun information and the battery rated voltage, and sends the charging request current range to the meter; The meter prompts the user to input a target requested current according to the charging requested current range; Furthermore, the instrument further includes a second acquisition module and a display module, and the on-board charger further includes a screening module and a second sending module, wherein: the second acquisition module is configured to acquire the target requested current input by the user after the reminder module reminds the user to input a target requested current according to the charging requested current range, and send the target requested current to the on-board charger; The screening module is configured to screen a final current from the target requested current and the maximum output current of the charging gun according to a preset screening rule, and charge the power battery according to the final current; The second sending module is used to send the final current to the meter; The display module is used to calculate charging information based on the final current and display the charging information, where the charging information includes the remaining charging time.

[0014] As an optional embodiment, in the second aspect of the present invention, the on-board charger further includes a receiving module and a third sending module, wherein: The receiving module is configured to receive a charging gun connection signal sent by the charging gun when the charging gun is inserted into the charging base, and activate the communication circuit of the on-board charger according to the charging gun connection signal; The third sending module is configured to send the charging gun connection signal to the battery management system through the communication circuit; Furthermore, the on-board charger further includes a detection module, wherein: The detection module is configured to detect a position feedback signal of a charging gun lock after the first generation module wakes up the battery management system, the vehicle controller, and the instrument through the wake-up signal, and determine whether the charging gun lock is closed based on the position feedback signal; when the charging gun lock is closed, trigger the first acquisition module to execute an operation of acquiring charging gun information of the charging gun.

[0015] As an optional embodiment, in the second aspect of the present invention, the adjustable charging control system further includes a power distribution box, and the power distribution box includes a charging relay; The battery management system further includes a second generation module, and the vehicle controller includes a control module, wherein: The second generating module is configured to generate a control message and send the control message to the vehicle controller after the first generating module wakes up the battery management system, the vehicle controller and the instrument through the wake-up signal; The control module is used to control the charging relay in the distribution box to close according to the control message; Furthermore, the manner in which the first acquisition module acquires the battery information of the power battery specifically includes: The first acquisition module acquires battery information of the power battery through the charging relay.

[0016] As an optional implementation manner, in the second aspect of the present invention, the manner in which the first acquisition module acquires the charging gun information of the charging gun specifically includes: Obtaining the charging voltage and control guidance signal of the charging gun; The duty cycle corresponding to the charging gun is determined according to the control guidance signal, and the maximum output current of the charging gun is calculated according to the duty cycle.

[0017] A third aspect of the present invention discloses an electric vehicle, comprising part or all of the adjustable charging control system described in any one of the second aspects of the present invention, wherein the adjustable charging control system comprises a charging station, an onboard charger, a battery management system, a vehicle controller, an instrument, a power battery, and a distribution box, wherein the distribution box comprises a charging relay and a low-voltage interface, wherein: The first end of the charging seat is used to insert a charging gun, the second end of the charging seat is electrically connected to the first end of the vehicle charger, the second end of the vehicle charger is electrically connected to the first end of the battery management system, the first end of the vehicle controller and the first end of the instrument respectively, the second end of the vehicle controller is electrically connected to the second end of the battery management system and the second end of the instrument respectively, the third end of the vehicle controller is electrically connected to the power battery through the low-voltage interface of the distribution box and the charging relay, and the third end of the vehicle charger is electrically connected to the power battery through the charging relay of the distribution box.

[0018] A fourth aspect of the present invention discloses an adjustable charging control device, comprising: a memory storing executable program code; a processor coupled to the memory; The processor calls the executable program code stored in the memory to execute part or all of the steps in any one of the adjustable charging control methods described in the first aspect of the present invention.

[0019] A fourth aspect of the present invention discloses a computer storage medium, which stores computer instructions. When the computer instructions are called, they are used to execute some or all of the steps in the adjustable charging control method described in any one of the first aspects of the present invention.

[0020] Compared with the prior art, the present invention has the following beneficial effects: In an embodiment of the present invention, when a charging gun is inserted into a charging dock, a wake-up signal is generated by the on-board charger, and the wake-up signal wakes up the battery management system, the vehicle controller, and the instrument. The on-board charger obtains the charging voltage and maximum output voltage of the charging gun, as well as the rated voltage of the power battery. The battery management system sends a charging request current to the on-board charger. The on-board charger determines whether the maximum output current of the charging gun matches the charging request current based on the charging gun information, battery information, and charging request information, and obtains a judgment result. When the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, the instrument prompts the user to enter the target request current. It can be seen that the implementation of the present invention allows users to independently select the charging current according to actual conditions, and can match charging cables of different specifications by controlling the charging current, thereby improving the flexibility and safety of the charging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a flow chart of an adjustable charging control method disclosed in an embodiment of the present invention; Figure 2 This is a flow chart of another adjustable charging control method disclosed in an embodiment of the present invention; Figure 3 This is a schematic structural diagram of an adjustable charging control system disclosed in an embodiment of the present invention; Figure 4 It is a structural diagram of another adjustable charging control system disclosed in an embodiment of the present invention; Figure 5 This is a schematic structural diagram of an electric vehicle disclosed in an embodiment of the present invention; Figure 6It is a structural schematic diagram of an adjustable charging control device disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0023] 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 accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0024] The terms "first," "second," and so on, in the description and claims of the present invention and the accompanying drawings are used to distinguish between different items, not to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product, or end comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed therein, or may optionally include other steps or elements inherent to such process, method, product, or end.

[0025] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] The present invention discloses an adjustable charging control method and system, as well as an electric vehicle, that allows users to independently select the charging current based on actual conditions. This control of the charging current can be used to match charging cables of different specifications, thereby improving the flexibility and safety of the charging process. These are described in detail below.

[0027] Example 1 See also Figure 1 , Figure 1 This is a flow chart of an adjustable charging control method disclosed in an embodiment of the present invention. Figure 1 The adjustable charging control method described can be applied to an adjustable charging control system, which may include a charging station, an onboard charger, a battery management system, a vehicle controller, an instrument, and a power battery. It may also include an intelligent server or intelligent platform for controlling the charging gun. The intelligent server may include a local server or a cloud server, which is not limited in the embodiment of the present invention. Figure 1As shown, the adjustable charging control method may include the following operations: 101. When the charging gun is inserted into the charging base, the on-board charger generates a wake-up signal and wakes up the battery management system, vehicle controller and instrument through the wake-up signal.

[0028] In an embodiment of the present invention, optionally, when the charging gun is inserted into the charging base, the charging gun will output a signal to wake up the on-board charger, and then the on-board charger will generate a wake-up signal and wake up the battery management system, the vehicle controller and the instrument through the wake-up signal. The wake-up signal may include a 12V low-voltage electrical signal, which is not limited by the present invention.

[0029] 102. The on-board charger obtains the charging gun information of the charging gun and obtains the battery information of the power battery.

[0030] In an embodiment of the present invention, optionally, the charging gun information may include the charging voltage and the maximum output voltage of the charging gun. The charging voltage may include 220V. The battery information of the power battery may include the battery rated voltage, such as 48V, which is not limited in the present invention.

[0031] In the embodiment of the present invention, optionally, before the on-board charger obtains the battery information of the power battery, the following steps may also be included: The on-board charger detects the voltage of the power battery and determines whether the voltage of the power battery is within a preset voltage range. When the voltage of the power battery is not within the preset voltage range, the on-board charger reports a battery fault and enters a dormant state; when the voltage of the power battery is within the preset voltage range, the on-board charger obtains the battery information of the power battery.

[0032] Among them, the voltage of the power battery V bat =48V as an example, the preset voltage range can be 44V-56V, which is not limited in the present invention.

[0033] 103. The battery management system sends a charging request message to the onboard charger.

[0034] In the embodiment of the present invention, optionally, the charging request information may include a charging request current, for example, 60A (48V).

[0035] In an embodiment of the present invention, optionally, after the on-board charger obtains the voltage of the power battery and confirms that the voltage is normal, the battery management system sends a control word message to the on-board charger: 0x18010102, where 0x01 indicates a message to start charging. At this time, the battery management system enters a state where charging is possible.

[0036] 104. The on-board charger determines whether the maximum output current of the charging gun matches the charging request current based on the charging gun information, the battery information, and the charging request information, and obtains a determination result.

[0037] In an embodiment of the present invention, optionally, the on-board charger can calculate the requested input power based on the charging request current and the rated voltage of the battery, calculate the maximum input power of the charging gun based on the charging voltage and the maximum output current of the charging gun, and determine whether the maximum output current of the charging gun matches the charging request current based on the requested input power and the maximum input power to obtain a judgment result.

[0038] 105. When the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, the meter reminds the user to input the target request current.

[0039] In an embodiment of the present invention, optionally, when the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, the charging base may be slightly damaged during long-term operation. At this time, the meter reminds the user to enter the target request current and charges according to the target request current. The target request current is less than the charging request current.

[0040] It can be seen that implementation Figure 1 The adjustable charging control method described can generate a wake-up signal through the on-board charger when the charging gun is inserted into the charging base, and wake up the battery management system, vehicle controller and instrument through the wake-up signal, obtain the charging voltage and maximum output voltage of the charging gun and the rated voltage of the power battery through the on-board charger, send a charging request current to the on-board charger through the battery management system, and judge whether the maximum output current of the charging gun matches the charging request current based on the charging gun information, battery information and charging request information through the on-board charger to obtain a judgment result. When the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, the instrument reminds the user to enter the target request current. The user can independently select the charging current according to the actual situation. By controlling the charging current, it can match charging cables of different specifications, thereby improving the flexibility and safety of the charging process.

[0041] In an optional embodiment, when the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, the meter prompting the user to enter the target request current may include the following operations: When the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, the on-board charger determines the charging request current range that matches the charging gun based on the charging gun information and the battery voltage, and sends the charging request current range to the instrument; The meter reminds the user to input the target requested current based on the charging requested current range; Furthermore, after the meter prompts the user to input a target requested current according to the charging requested current range, the adjustable charging control method may further include the following operations: The meter obtains the target requested current input by the user and sends the target requested current to the on-board charger; The on-board charger selects the final current from the target requested current and the maximum output current of the charging gun according to the preset screening rules, and charges the power battery according to the final current; The on-board charger sends the final current to the meter, which calculates the charging information based on the final current and displays the charging information, including the remaining charging time.

[0042] In this optional embodiment, optionally, when the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, the on-board charger determines the charging request current range that matches the charging gun based on the charging gun information and the battery rated voltage, the maximum power corresponding to the charging request current range is less than the maximum output power of the charging gun, and sends the charging request current range to the meter, and the meter reminds the user to enter the target request current based on the charging request current range, wherein the meter may include a visual display screen, after the meter parses the charging request current range, the charging request current range is displayed through the visual display screen to remind the user to enter the target request current, wherein the charging request current range can be converted into a preset graphic for display, such as a bar chart, a column chart, etc. The way to remind the user may include light reminder, sound reminder, etc. The user can enter the corresponding current value or click or pull the graphic displayed on the screen by touching the screen to complete the input of the target request current, and can also input by voice, which is not limited in this embodiment.

[0043] In this optional embodiment, the meter obtains the target requested current input by the user and sends the target requested current to the on-board charger. Specifically, when the system conversion efficiency is 0.95, the charging request current is 60A, and the battery rated voltage is 48V, the requested input power P 请求输入 = (60*48) / 0.95=3031W, the charging voltage of the charging head is 220V, when the duty cycle of the charging gun is 16%, the maximum output current of the charging gun Imax=(D*100)*0.6=9.6A, then the maximum input power P of the charging gun at this time 最大输出 =220V*9.6A=2112W. If the target current requested by the user is 40A, then P 仪表输入= (40 * 48) / 0.95 = 2021W, which is less than the maximum input power of the charging gun of 2112W. At this time, the on-board charger selects the final current between the target requested current and the maximum output current of the charging gun according to the preset screening rules. Specifically, the smaller power between the target requested current and the maximum output current of the charging gun can be selected as the final current, and the power battery is charged according to the final current. The on-board charger sends the final current to the meter, and the meter calculates the charging information based on the final current and displays the charging information. The charging information may include the remaining charging time, which is not limited in this embodiment.

[0044] It can be seen that the implementation of this optional embodiment can, when the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, the on-board charger determines the charging request current range that matches the charging gun based on the charging gun information and the battery voltage, and sends the charging request current range to the meter. The meter prompts the user to enter the target request current based on the charging request current range, which can improve the accuracy and reliability of the user's adjustment of the charging current, thereby improving the safety of the charging process. The meter obtains the target request current entered by the user and sends the target request current to the on-board charger. The on-board charger filters the final current between the target request current and the maximum output current of the charging gun according to preset filtering rules, and charges the power battery according to the final current. The on-board charger sends the final current to the meter, and the meter calculates charging information based on the final current and displays the charging information. The user can independently select the charging current according to the actual situation. By controlling the charging current, it can match charging cables of different specifications, improve the flexibility and safety of the charging process, and can visualize the charging information, improve the efficiency of the user's acquisition of charging information, and improve the user experience.

[0045] In another optional embodiment, when the charging gun is inserted into the charging base, the adjustable charging control method may further include the following operations: The on-board charger receives the charging gun connection signal sent by the charging gun and activates the communication circuit of the on-board charger according to the charging gun connection signal; The on-board charger sends a charging gun connection signal to the battery management system through the communication circuit; Furthermore, after the onboard charger wakes up the battery management system, the vehicle controller, and the instrument panel through the wake-up signal, the adjustable charging control method may further include the following operations: The on-board charger detects the position feedback signal of the charging gun lock and determines whether the charging gun lock is closed based on the position feedback signal; When the charging gun lock is closed, the on-board charger is triggered to execute an operation of obtaining the charging gun information of the charging gun.

[0046] In this optional embodiment, optionally, when the charging gun is inserted into the charging base, the on-board charger can identify the charging gun connection signal of the charging gun, that is, the CC signal. After the on-board charger receives the charging gun connection signal sent by the charging gun, it activates the communication circuit of the on-board charger according to the charging gun connection signal. The communication circuit includes an MCU and a CAN circuit. The on-board charger sends the charging gun connection signal to the battery management system through the communication circuit. Specifically, the on-board charger can send a CAN message to the battery management system through the communication circuit box to prompt the battery management system that the charging gun is connected. Specifically, the CAN message can include ID: 0x18020201, the 0th byte represents the charging gun connection signal, where 01 represents that the AC charging gun is connected and 02 represents that it is not connected. Because the CC signal is normal, the CAN message at this time is: 0x18020201 01 00 00 00 00 00 00.

[0047] In this optional embodiment, optionally, after the on-board charger wakes up the battery management system, the vehicle controller and the instrument through a wake-up signal, the on-board charger can detect the position feedback signal of the charging gun lock, and determine whether the charging gun lock is closed based on the position feedback signal. When the charging gun lock is closed, the on-board charger can be triggered to execute the operation of obtaining the charging gun information of the charging gun. When the charging gun lock is not closed, the on-board charger reports an electronic lock failure and enters a sleep state. This embodiment does not limit this.

[0048] It can be seen that the implementation of this optional embodiment can receive the charging gun connection signal sent by the charging gun through the on-board charger, and activate the communication circuit of the on-board charger according to the charging gun connection signal. The on-board charger sends the charging gun connection signal to the battery management system through the communication circuit. The on-board charger detects the position feedback signal of the charging gun lock and determines whether the charging gun lock is closed based on the position feedback signal. When the charging gun lock is closed, the on-board charger is triggered to execute the operation of obtaining the charging gun information of the charging gun, which can improve the safety and reliability of the charging process.

[0049] In yet another optional embodiment, the adjustable charging control system further includes a power distribution box, the power distribution box including a charging relay; After the onboard charger wakes up the battery management system, vehicle controller, and instrument panel through the wake-up signal, the adjustable charging control method may further include the following operations: The battery management system generates a control message and sends it to the vehicle controller; The vehicle controller controls the charging relay in the power distribution box to close according to the control message; Furthermore, the on-board charger may obtain the battery information of the power battery by performing the following operations: The on-board charger obtains battery information of the power battery through the charging relay.

[0050] In this optional embodiment, optionally, the adjustable charging control system also includes a distribution box, which includes a charging relay. After the on-board charger wakes up the battery management system, the vehicle controller and the instrument through a wake-up signal, the battery management system generates a control message and sends the control message to the vehicle controller. Specifically, the battery management system generates a B2V control word message: 0x18020203 and sends it to the vehicle controller. The 0th byte represents the charging type signal, where 01 represents AC charging and 02 represents DC charging. Therefore, the B2V control word message at this time is: 0x18020203 01 00 00 00 0000 00.

[0051] In this optional embodiment, optionally, the vehicle controller controls the charging relay in the distribution box to close according to the control message. After the charging relay is closed, the on-board charger can identify the voltage of the power battery, that is, the on-board charger obtains the battery information of the power battery through the charging relay. If the charging relay fails to close, the on-board charger reports a charging relay failure and enters a dormant state. This is not limited in this embodiment.

[0052] It can be seen that the implementation of this optional embodiment can enable the on-board charger to wake up the battery management system, the vehicle controller and the instrument through a wake-up signal, and then the battery management system generates a control message and sends the control message to the vehicle controller. The vehicle controller controls the charging relay in the distribution box to close according to the control message, and the on-board charger obtains the battery information of the power battery through the charging relay, which can improve the charging safety and reliability of the power battery, and improve the efficiency and accuracy of obtaining the battery information of the power battery.

[0053] In another optional embodiment, the on-board charger may obtain the charging gun information of the charging gun by performing the following operations: The on-board charger obtains the charging voltage and control guidance signal of the charging gun; The on-board charger determines the duty cycle corresponding to the charging gun according to the control guidance signal, and calculates the maximum output current of the charging gun according to the duty cycle.

[0054] In this optional embodiment, the on-board charger obtains the charging voltage and the control guidance signal of the charging gun, the control guidance signal being the CP signal. The on-board charger determines the duty cycle corresponding to the charging gun according to the control guidance signal, and calculates the maximum output current of the charging gun according to the duty cycle. Specifically: Imax=(D*100)*0.6 Where D represents the duty cycle.

[0055] It can be seen that the implementation of this optional embodiment can obtain the charging voltage and control guidance signal of the charging gun through the on-board charger. The on-board charger determines the duty cycle corresponding to the charging gun according to the control guidance signal, and calculates the maximum output current of the charging gun according to the duty cycle, thereby improving the accuracy and reliability of obtaining the maximum output current and charging voltage of the charging gun, thereby improving the accuracy of subsequent current regulation.

[0056] Example 2 See also Figure 2 , Figure 2 This is a flow chart of an adjustable charging control method disclosed in an embodiment of the present invention. Figure 2 The adjustable charging control method described can be applied to an adjustable charging control system, which may include a charging station, an onboard charger, a battery management system, a vehicle controller, an instrument, and a power battery. It may also include an intelligent server or intelligent platform for controlling the charging gun. The intelligent server may include a local server or a cloud server, which is not limited in the embodiment of the present invention. Figure 1 As shown, the adjustable charging control method may include the following operations: 201. When the charging gun is inserted into the charging base, the on-board charger generates a wake-up signal and wakes up the battery management system, vehicle controller and instrument through the wake-up signal.

[0057] 202. The on-board charger obtains charging gun information of the charging gun and obtains battery information of the power battery.

[0058] 203. The battery management system sends a charging request message to the onboard charger.

[0059] 204. Obtain system energy conversion efficiency, and calculate the requested input power based on the system energy conversion efficiency, the charging request current, and the battery rated voltage.

[0060] In the embodiment of the present invention, the system energy conversion efficiency optionally represents the efficiency of the adjustable charging control system in converting input into output. In the embodiment of the present invention, a system conversion efficiency of 0.95 is used as an example for illustration. The requested input power can be calculated based on the system energy conversion efficiency, the requested charging current, and the rated voltage of the battery:

[0061] Where η represents the system energy conversion efficiency, I 请 Indicates the charging request current, V bat Indicates the rated voltage of the battery. When η=0.95, I 请 =60A, V bat =48V, P 请求输入 =(60*48) / 0.95=3031W.

[0062] 205. Calculate the maximum input power of the charging gun based on the charging voltage and the maximum output current of the charging gun.

[0063] In the embodiment of the present invention, optionally, the charging voltage of the charging head is 220V, and when the maximum output current of the charging gun is 9.6A, the maximum input power P of the charging gun is 220V. 最大输出 =220V*9.6A=2112W.

[0064] 206. Determine whether the requested input power is less than or equal to the maximum input power. When the requested input power is less than or equal to the maximum input power, determine that the maximum output current of the charging gun matches the charging request current. When the requested input power is greater than the maximum input power, determine that the maximum output current of the charging gun does not match the charging request current.

[0065] In an embodiment of the present invention, it is optional to determine whether the requested input power is less than or equal to the maximum input power. When the requested input power is less than or equal to the maximum input power, it can be determined that the maximum output current of the charging gun matches the charging request current. When the requested input power is greater than the maximum input power, long-term charging will cause the charging base to overheat. At this time, it is determined that the maximum output current of the charging gun does not match the charging request current.

[0066] 207. When the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, the meter reminds the user to input the target request current.

[0067] In the embodiment of the present invention, for other descriptions of steps 201 to 203 and step 207, please refer to the detailed description of steps 101 to 103 and step 105 in the first embodiment of the present invention, which will not be repeated in this embodiment of the present invention.

[0068] It can be seen that implementation Figure 2The adjustable charging control method described can generate a wake-up signal through the on-board charger when the charging gun is inserted into the charging dock. The wake-up signal wakes up the battery management system, vehicle controller, and instrument panel. The on-board charger obtains the charging voltage and maximum output voltage of the charging gun, as well as the rated battery voltage of the power battery. The battery management system sends a charging request current to the on-board charger to obtain the system energy conversion efficiency. The requested input power is calculated based on the system energy conversion efficiency, the charging request current, and the rated battery voltage. The maximum input power of the charging gun is calculated based on the charging voltage and the maximum output current of the charging gun. The method can determine whether the maximum output current of the charging gun matches the charging request current based on the requested input power and the maximum input power of the charging gun, improving the accuracy and reliability of the judgment, thereby improving the accuracy of the target requested current subsequently input through the instrument panel. When the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, the instrument panel prompts the user to enter the target requested current. The user can then independently select the charging current based on the actual situation. By controlling the charging current, the method can match charging cables of different specifications, improving the flexibility and safety of the charging process.

[0069] Example 3 See also Figure 3 , Figure 3 This is a schematic diagram of the structure of an adjustable charging control system disclosed in an embodiment of the present invention. Figure 3 The adjustable charging control system described may include a charging station 301, an onboard charger 302, a battery management system 303, a vehicle controller 304, an instrument 305, and a power battery 306. The onboard charger 302 includes a first generation module 3021, a first acquisition module 3022, and a judgment module 3023. The battery management system 303 includes a first sending module 3031. The instrument 305 includes a reminder module 3051. The first generating module 3021 is used to generate a wake-up signal when the charging gun 401 is inserted into the charging base 301, and wake up the battery management system 303, the vehicle controller 304 and the instrument 305 through the wake-up signal; The first acquisition module 3022 is configured to acquire charging gun information of the charging gun 401 and battery information of the power battery 306 . The charging gun information includes the charging voltage and the maximum output current of the charging gun, and the battery information includes the rated voltage of the battery. The first sending module 3031 is configured to send charging request information to the onboard charger 302, where the charging request information includes a charging request current; The judgment module 3023 is used to judge whether the maximum output current of the charging gun matches the charging request current based on the charging gun information, the battery information and the charging request information, and obtain a judgment result; The reminder module 3051 is used to remind the user to input a target requested current when the judgment result indicates that the maximum output current of the charging gun does not match the charging requested current.

[0070] It can be seen that implementation Figure 3 The adjustable charging control system described can generate a wake-up signal through the on-board charger when the charging gun is inserted into the charging base, and wake up the battery management system, vehicle controller and instrument through the wake-up signal, obtain the charging voltage and maximum output voltage of the charging gun and the rated voltage of the power battery through the on-board charger, send a charging request current to the on-board charger through the battery management system, and judge whether the maximum output current of the charging gun matches the charging request current based on the charging gun information, battery information and charging request information through the on-board charger to obtain a judgment result. When the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, the instrument reminds the user to enter the target request current. The user can independently select the charging current according to the actual situation. By controlling the charging current, it can match charging cables of different specifications, thereby improving the flexibility and safety of the charging process.

[0071] In an optional embodiment, if Figure 4 As shown, the judgment module 3023 judges whether the maximum output current of the charging gun matches the charging request current based on the charging gun information, battery information and charging request information. The specific method of obtaining the judgment result includes: Obtaining the system energy conversion efficiency, and calculating the requested input power based on the system energy conversion efficiency, the charging request current, and the battery rated voltage; Calculate the maximum input power of the charging gun based on the charging voltage and the maximum output current of the charging gun; Determine whether the requested input power is less than or equal to the maximum input power. When the requested input power is less than or equal to the maximum input power, determine that the maximum output current of the charging gun matches the charging request current. When the requested input power is greater than the maximum input power, determine that the maximum output current of the charging gun does not match the charging request current.

[0072] It can be seen that implementation Figure 4The adjustable charging control system described can generate a wake-up signal through the on-board charger when the charging gun is inserted into the charging dock. The wake-up signal wakes up the battery management system, vehicle controller, and instrument cluster. The on-board charger obtains the charging voltage and maximum output voltage of the charging gun, as well as the rated voltage of the power battery. The battery management system sends a charging request current to the on-board charger to obtain the system energy conversion efficiency. The system energy conversion efficiency is then calculated based on the requested input power, the requested charging current, and the rated battery voltage. The maximum input power of the charging gun is calculated based on the charging voltage and the maximum output current of the charging gun. The system can determine whether the maximum output current of the charging gun matches the requested charging current based on the requested input power and the maximum input power of the charging gun, improving the accuracy and reliability of the judgment and, in turn, the accuracy of the target requested current subsequently input through the instrument cluster. If the judgment result indicates that the maximum output current of the charging gun does not match the requested charging current, the instrument cluster prompts the user to enter the target requested current. The user can then independently select the charging current based on the actual situation. By controlling the charging current, the system can match charging cables of different specifications, improving the flexibility and safety of the charging process.

[0073] In another optional embodiment, Figure 4 As shown, when the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, the specific method of the reminder module 3051 reminding the user to input the target request current includes: When the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, the onboard charger 302 determines the charging request current range that matches the charging gun based on the charging gun information and the battery voltage, and sends the charging request current range to the meter 305; The meter 305 prompts the user to input a target requested current according to the charging requested current range; Furthermore, the meter 305 further includes a second acquisition module 3052 and a display module 3053, and the onboard charger 302 further includes a screening module 3024 and a second sending module 3025, wherein: The second acquisition module 3052 is configured to acquire the target requested current input by the user after the reminder module 3051 reminds the user to input the target requested current according to the charging requested current range, and send the target requested current to the on-board charger 302; A screening module 3024 is configured to screen a final current from the target requested current and the maximum output current of the charging gun according to a preset screening rule, and charge the power battery according to the final current; The second sending module 3025 is used to send the final current to the meter 305; The display module 3053 is used to calculate the charging information according to the final current and display the charging information, including the remaining charging time.

[0074] It can be seen that implementation Figure 4 The adjustable charging control system described herein can, when the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, determine the charging request current range that matches the charging gun based on the charging gun information and the battery voltage, and send the charging request current range to the meter. The meter prompts the user to enter the target request current based on the charging request current range, which can improve the accuracy and reliability of the user's adjustment of the charging current, thereby improving the safety of the charging process. The meter obtains the target request current entered by the user and sends the target request current to the on-board charger. The on-board charger selects the final current between the target request current and the maximum output current of the charging gun according to preset screening rules, and charges the power battery according to the final current. The on-board charger sends the final current to the meter, which calculates charging information based on the final current and displays the charging information. The user can independently select the charging current according to the actual situation. By controlling the charging current, it can match charging cables of different specifications, improving the flexibility and safety of the charging process. The charging information can also be displayed visually, improving the efficiency of users in obtaining charging information and improving the user experience.

[0075] In another optional embodiment, Figure 4 As shown, the onboard charger 302 further includes a receiving module 3026 and a third sending module 3027, wherein: The receiving module 3026 is used to receive a charging gun connection signal sent by the charging gun 401 when the charging gun 401 is inserted into the charging base 301, and activate the communication circuit of the on-board charger 302 according to the charging gun connection signal; The third sending module 3027 is used to send a charging gun connection signal to the battery management system 303 through the communication circuit; Furthermore, the onboard charger 302 further includes a detection module 3028, wherein: The detection module 3028 is used to detect the position feedback signal of the charging gun lock after the first generation module 3021 wakes up the battery management system 303, the vehicle controller 304 and the instrument 305 through the wake-up signal, and determine whether the charging gun lock is closed based on the position feedback signal; when the charging gun lock is closed, trigger the first acquisition module 3022 to execute the operation of obtaining the charging gun information of the charging gun.

[0076] It can be seen that implementation Figure 4The adjustable charging control system described can receive a charging gun connection signal sent by the charging gun through the on-board charger, and activate the communication circuit of the on-board charger according to the charging gun connection signal. The on-board charger sends the charging gun connection signal to the battery management system through the communication circuit. The on-board charger detects the position feedback signal of the charging gun lock and determines whether the charging gun lock is closed based on the position feedback signal. When the charging gun lock is closed, the on-board charger is triggered to execute the operation of obtaining the charging gun information of the charging gun, which can improve the safety and reliability of the charging process.

[0077] In another optional embodiment, Figure 4 As shown, the adjustable charging control system further includes a distribution box 307, which includes a charging relay; The battery management system 303 further includes a second generation module 3032, and the vehicle controller 304 includes a control module 3041, wherein: The second generating module 3032 is configured to generate a control message and send the control message to the vehicle controller 304 after the first generating module 3021 wakes up the battery management system 303, the vehicle controller 304, and the meter 305 through the wake-up signal; The control module 3041 is used to control the charging relay in the distribution box 307 to close according to the control message; Furthermore, the specific manner in which the first acquisition module 3022 acquires the battery information of the power battery 306 includes: The first acquisition module 3022 acquires battery information of the power battery 306 through the charging relay.

[0078] It can be seen that implementation Figure 4 The adjustable charging control system described can enable the on-board charger to wake up the battery management system, vehicle controller and instrument through a wake-up signal. The battery management system then generates a control message and sends the control message to the vehicle controller. The vehicle controller controls the charging relay in the distribution box to close according to the control message. The on-board charger obtains battery information of the power battery through the charging relay, which can improve the charging safety and reliability of the power battery and improve the efficiency and accuracy of obtaining battery information of the power battery.

[0079] In another optional embodiment, Figure 4 As shown, the first acquisition module 3022 acquires the charging gun information of the charging gun in the following manner: Obtain the charging voltage and control guidance signal of the charging gun 401; The duty cycle corresponding to the charging gun 401 is determined according to the control guidance signal, and the maximum output current of the charging gun 401 is calculated according to the duty cycle.

[0080] It can be seen that implementation Figure 4The adjustable charging control system described can obtain the charging voltage and control guidance signal of the charging gun through the on-board charger. The on-board charger determines the corresponding duty cycle of the charging gun based on the control guidance signal, and calculates the maximum output current of the charging gun based on the duty cycle, thereby improving the accuracy and reliability of obtaining the maximum output current and charging voltage of the charging gun, thereby improving the accuracy of subsequent current regulation.

[0081] Example 4 See also Figure 5 , Figure 5 This is a schematic diagram of the structure of an electric vehicle disclosed in an embodiment of the present invention. Figure 5 As shown, the electric vehicle includes an adjustable charging control system, which includes a charging station 301, an onboard charger 302, a battery management system 303, a vehicle controller 304, a meter 305, a power battery 306 and a distribution box 307. The distribution box 307 includes a charging relay K1 and a low-voltage interface K2, wherein: The first end of the charging seat 301 is used to insert the charging gun 401, the second end of the charging seat 301 is electrically connected to the first end of the vehicle charger 302, the second end of the vehicle charger 302 is electrically connected to the first end of the battery management system 303, the first end of the vehicle controller 304 and the first end of the instrument 305 respectively, the second end of the vehicle controller 304 is electrically connected to the second end of the battery management system 303 and the second end of the instrument 305 respectively, the third end of the vehicle controller 304 is electrically connected to the power battery 306 through the low-voltage interface K2 of the distribution box 307 and the charging relay K1, and the third end of the vehicle charger 302 is electrically connected to the power battery through the charging relay K1 of the distribution box 307.

[0082] In the embodiment of the present invention, the electric vehicle may include electric engineering machinery such as an electric excavator, an electric forklift, an aerial platform, and an electric loader.

[0083] It can be seen that implementation Figure 5 The described electric vehicle can generate a wake-up signal through the on-board charger when the charging gun is inserted into the charging base, and wake up the battery management system, vehicle controller and instrument through the wake-up signal, obtain the charging voltage and maximum output voltage of the charging gun and the battery rated voltage of the power battery through the on-board charger, send a charging request current to the on-board charger through the battery management system, and judge whether the maximum output current of the charging gun matches the charging request current through the on-board charger based on the charging gun information, battery information and charging request information, and obtain a judgment result. When the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, the instrument reminds the user to input the target request current. The user can independently select the charging current according to the actual situation. The charging current can be controlled to match charging cables of different specifications, thereby improving the flexibility and safety of the charging process.

[0084] Example 5 See also Figure 6 , Figure 6 This is a schematic diagram of the structure of an adjustable charging control device disclosed in an embodiment of the present invention. Figure 6 As shown, the adjustable charging control device may include: A memory 501 storing executable program code; a processor 502 coupled to the memory 501; The processor 502 calls the executable program code stored in the memory 501 to execute the steps of the adjustable charging control method described in the first embodiment or the second embodiment of the present invention.

[0085] Example 6 An embodiment of the present invention discloses a computer storage medium storing computer instructions. When the computer instructions are called, they are used to execute some or all of the steps in any one of the adjustable charging control methods disclosed in the first embodiment of the present invention.

[0086] Example 7 An embodiment of the present invention discloses a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to execute the steps of the adjustable charging control method described in the first or second embodiment.

[0087] The device embodiments described above are merely illustrative, wherein the modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules, i.e., they may be located in one place or distributed across multiple network modules. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Those skilled in the art can understand and implement the present invention without inventive effort.

[0088] Through the detailed description of the above embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, or of course, by means of hardware. Based on this understanding, the above technical solution, in essence, or the portion that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as a read-only memory (ROM), a random access memory (RAM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), a one-time programmable read-only memory (OTPROM), an electronically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM), or other optical disk storage, magnetic disk storage, magnetic tape storage, or any other computer-readable medium capable of carrying or storing data.

[0089] Finally, it should be noted that the adjustable charging control method and system, and the electric vehicle disclosed in the embodiments of the present invention are only preferred embodiments of the present invention, and are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, it should be understood by those skilled in the art that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An adjustable charging control method, characterized in that: The method is applied to an adjustable charging control system, which includes a charging station, an on-board charger, a battery management system, a vehicle controller, an instrument, and a power battery. The method includes: When the charging gun is inserted into the charging base, the on-board charger generates a wake-up signal and wakes up the battery management system, the vehicle controller and the instrument through the wake-up signal; The on-board charger obtains charging gun information of the charging gun and battery information of the power battery, wherein the charging gun information includes charging voltage and maximum output current of the charging gun, and the battery information includes rated battery voltage; The battery management system sends charging request information to the on-board charger, wherein the charging request information includes a charging request current; The on-board charger determines, based on the charging gun information, the battery information, and the charging request information, whether the maximum output current of the charging gun matches the charging request current, and obtains a determination result; When the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, the meter prompts the user to input a target request current.

2. The adjustable charging control method according to claim 1, characterized in that: The on-board charger determines, based on the charging gun information, the battery information, and the charging request information, whether the maximum output current of the charging gun matches the charging request current, and obtains a determination result, including: Obtaining a system energy conversion efficiency, and calculating a requested input power based on the system energy conversion efficiency, the requested charging current, and the rated voltage of the battery; Calculating the maximum input power of the charging gun according to the charging voltage and the maximum output current of the charging gun; Determine whether the requested input power is less than or equal to the maximum input power. When the requested input power is less than or equal to the maximum input power, determine that the maximum output current of the charging gun matches the charging request current. When the requested input power is greater than the maximum input power, determine that the maximum output current of the charging gun does not match the charging request current.

3. The adjustable charging control method according to claim 1 or 2, characterized in that: When the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, the meter prompts the user to input a target request current, including: When the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, the on-board charger determines a charging request current range that matches the charging gun based on the charging gun information and the battery rated voltage, and sends the charging request current range to the meter; The meter prompts the user to input a target requested current according to the charging requested current range; Furthermore, after the meter prompts the user to input a target requested current according to the charging requested current range, the method further includes: The meter obtains the target requested current input by the user and sends the target requested current to the on-board charger; The on-board charger selects a final current from the target requested current and the maximum output current of the charging gun according to a preset screening rule, and charges the power battery according to the final current; The on-board charger sends the final current to the meter, and the meter calculates charging information according to the final current and displays the charging information, where the charging information includes the remaining charging time.

4. The adjustable charging control method according to claim 1 or 2, characterized in that: When the charging gun is inserted into the charging base, the method further includes: The on-board charger receives a charging gun connection signal sent by the charging gun, and activates a communication circuit of the on-board charger according to the charging gun connection signal; The on-board charger sends the charging gun connection signal to the battery management system through the communication circuit; Furthermore, after the on-board charger wakes up the battery management system, the vehicle controller, and the instrument through the wake-up signal, the method further includes: The on-board charger detects a position feedback signal of the charging gun lock, and determines whether the charging gun lock is closed according to the position feedback signal; When the charging gun lock is closed, the on-board charger is triggered to execute an operation of acquiring charging gun information of the charging gun.

5. The adjustable charging control method according to claim 1 or 2, characterized in that: The adjustable charging control system further includes a power distribution box, which includes a charging relay; After the on-board charger wakes up the battery management system, the vehicle controller, and the instrument through the wake-up signal, the method further includes: The battery management system generates a control message and sends the control message to the vehicle controller; The vehicle controller controls the charging relay in the power distribution box to close according to the control message; Furthermore, the on-board charger obtains battery information of the power battery, including: The on-board charger obtains battery information of the power battery through the charging relay.

6. The adjustable charging control method according to claim 1 or 2, characterized in that: The on-board charger obtains charging gun information of the charging gun, including: The on-board charger obtains the charging voltage and control guidance signal of the charging gun; The on-board charger determines a duty cycle corresponding to the charging gun according to the control guidance signal, and calculates a maximum output current of the charging gun according to the duty cycle.

7. An adjustable charging control system, characterized in that: The adjustable charging control system includes a charging station, an on-board charger, a battery management system, a vehicle controller, an instrument, and a power battery. The on-board charger includes a first generation module, a first acquisition module, and a judgment module. The battery management system includes a first sending module. The instrument includes a reminder module. The first generating module is configured to generate a wake-up signal when a charging gun is inserted into the charging base, and wake up the battery management system, the vehicle controller, and the instrument through the wake-up signal; a first acquisition module, configured to acquire charging gun information of the charging gun and battery information of the power battery, wherein the charging gun information includes charging voltage and maximum output current of the charging gun, and the battery information includes rated battery voltage; a first sending module, configured to send charging request information to the on-board charger, wherein the charging request information includes a charging request current; a judgment module, configured to judge whether the maximum output current of the charging gun matches the charging request current based on the charging gun information, the battery information, and the charging request information, and obtain a judgment result; The reminder module is used to remind the user to input a target requested current when the judgment result indicates that the maximum output current of the charging gun does not match the charging requested current.

8. An electric vehicle, characterized in that: The electric vehicle includes an adjustable charging control system, which includes a charging station, an on-board charger, a battery management system, a vehicle controller, an instrument, a power battery, and a power distribution box. The power distribution box includes a charging relay and a low-voltage interface, wherein: The first end of the charging seat is used to insert a charging gun, the second end of the charging seat is electrically connected to the first end of the vehicle charger, the second end of the vehicle charger is electrically connected to the first end of the battery management system, the first end of the vehicle controller and the first end of the instrument respectively, the second end of the vehicle controller is electrically connected to the second end of the battery management system and the second end of the instrument respectively, the third end of the vehicle controller is electrically connected to the power battery through the low-voltage interface of the distribution box and the charging relay, and the third end of the vehicle charger is electrically connected to the power battery through the charging relay of the distribution box.

9. An adjustable charging control device, characterized in that: The device comprises: a memory storing executable program code; a processor coupled to the memory; The processor calls the executable program code stored in the memory to execute the adjustable charging control method according to any one of claims 1 to 6.

10. A computer storage medium, characterized in that The computer storage medium stores computer instructions, and when the computer instructions are called, they are used to execute the adjustable charging control method according to any one of claims 1 to 6.

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