Adjustable charging control method and system, electric vehicle

Abstract

The application relates to the technical field of electric vehicle charging, and discloses an adjustable charging control method and system and an electric vehicle, the method comprising the following steps: when a charging gun is inserted into a charging seat, a vehicle-mounted charging machine generates a wake-up signal, the battery management system, the vehicle controller and the instrument are woken up through the wake-up signal, the vehicle-mounted charging machine acquires charging gun information of the charging gun and battery rated voltage of a power battery, the battery management system sends a charging request current to the vehicle-mounted charging machine, the vehicle-mounted charging machine judges whether the maximum output current of the charging gun matches the charging request current according to the charging gun information, the battery information and the charging request information, and when the judgment result indicates that the maximum output current of the charging gun does not match the charging request current, the instrument prompts a user to input a target request current. It can be seen that the application can enable the user to autonomously select a charging current according to actual conditions, can match charging lines of different specifications through control of the charging current, and improves the flexibility and safety of the charging process.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle charging technology, and more particularly to an adjustable charging control method and system, and an electric vehicle. Background Technology

[0002] In the wave of electrification in construction machinery, electric excavators, as core equipment, have seen their charging systems' intelligence and compatibility become a key focus of the industry. Current mainstream charging solutions use fixed-specification charging cables (such as 8A, 10A, 11A, 13A, etc.) in conjunction with standard AC charging modes, achieving charging through interaction between the cable control box and the on-board charger (OBC). During this process, the vehicle's instrument panel can only passively display the charging current and cannot actively intervene in the charging process. This situation forces users to frequently change charging cables according to different socket specifications (such as household 10A and 16A sockets), resulting in high operational complexity and potential safety hazards due to mismatched specifications.

[0003] In existing technologies, the control logic of charging systems mainly revolves around "fixed current matching fixed cable," transmitting charging cable specification information through an on-board control box, and the on-board charger executes the charging process according to preset parameters. While this solution can meet basic charging needs, it exposes significant drawbacks: First, the charging cable specification is strongly tied to the socket type, requiring users to equip themselves with multiple sets of charging cables, increasing usage costs and management complexity; second, the vehicle control system lacks the ability to adjust the charging current in real time, failing to dynamically optimize charging power based on the power environment, leading to overcurrent risks under non-standard power conditions; third, the instrument panel's functions are limited to status display and are not deeply integrated into the charging control chain, making it difficult to achieve intelligent human-machine interaction for intervention in the charging process. Therefore, proposing a technical solution that can control the charging current to improve charging flexibility and safety is particularly important. Summary of the Invention

[0004] This 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] To address the aforementioned technical problems, the first aspect of this invention discloses an adjustable charging control method. This method is applied in an adjustable charging control system, which includes a charging dock, an on-board charger, a battery management system, a vehicle controller, an instrument panel, and a power battery. The method includes: When the charging gun is inserted into the charging socket, the on-board charger generates a wake-up signal and wakes up the battery management system, the vehicle controller, and the instrument panel through the wake-up signal; The on-board charger acquires the charging gun information of the charging gun and the battery information of the power battery. 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 battery management system sends a charging request information to the on-board charger, the charging request information including a charging request current. 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. 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 input the target request current.

[0006] As an optional implementation, 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 determination result, including: Obtain the 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; 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. If 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. If 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 implementation, in the first aspect of the present invention, when the determination result indicates that the maximum output current of the charging gun does not match the charging request current, the instrument prompts the user to input the 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 the charging request current range that matches the charging gun based on the charging gun information and the battery constant voltage, and sends the charging request current range to the instrument. The instrument prompts the user to input the target requested current based on the range of the requested charging current. And, after the instrument prompts the user to input a target requested current based on the charging requested current range, the method further includes: The instrument acquires 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 a preset filtering rule, and charges the power battery according to the final current. The on-board charger sends the final current to the instrument, which calculates charging information based on the final current and displays the charging information, including the remaining charging time.

[0008] As an optional implementation, in the first aspect of the present invention, when the charging gun is inserted into the charging socket, the method further includes: 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 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 cluster via the wake-up signal, the method further includes: 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 perform the operation of obtaining the charging gun information.

[0009] As an optional implementation, in the first aspect of the present invention, the adjustable charging control system further includes a power distribution box, the power distribution box including a charging relay; After the on-board charger wakes up the battery management system, the vehicle controller, and the instrument cluster via 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; And, the on-board charger acquires the battery information of the power battery, including: The on-board charger obtains the battery information of the power battery through the charging relay.

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

[0011] A second aspect of this invention discloses an adjustable charging control system, comprising a charging dock, an on-board charger, a battery management system, a vehicle controller, an instrument panel, 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 transmission module, and the instrument panel includes a reminder module. The first generation module is used to generate a wake-up signal when the charging gun is inserted into the charging socket, and to wake up the battery management system, the vehicle controller and the instrument panel through the wake-up signal; The first acquisition module is used to acquire the charging gun information of the charging gun and the battery information of the power battery. 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 is used to send charging request information to the on-board charger, the charging request information including a charging request current; The judgment module is used to determine 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 to obtain a judgment result. The reminder module is used to remind the user to input the target requested current when the judgment result indicates that the maximum output current of the charging gun does not match the charging request current.

[0012] As an optional implementation, in a second aspect of the present invention, the determining 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 method for obtaining the determination result specifically includes: Obtain the 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; 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. If 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. If 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, in a second aspect of the present invention, when the determination 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 request current in the following ways: 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 constant voltage, and sends the charging request current range to the instrument. The instrument prompts the user to input the target requested current based on the range of the requested charging current. Furthermore, the instrument also 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 used to acquire the target request current input by the user after the reminder module reminds the user to input the target request current according to the charging request current range, and send the target request current to the on-board charger; The filtering module is used to filter the final current from the target requested current and the maximum output current of the charging gun according to the preset filtering rules, and to charge the power battery according to the final current. The second transmitting module is used to transmit the final current to the instrument; The display module is used to calculate charging information based on the final current and display the charging information, which includes the remaining charging time.

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

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

[0016] As an optional implementation, in a second aspect of the present invention, the method by which the first acquisition module acquires the charging gun information of the charging gun specifically includes: Obtain the charging voltage and control guidance signal of the charging gun; The duty cycle of 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 this invention discloses an electric vehicle, wherein the electric vehicle includes part or all of the adjustable charging control system described in any of the second aspects of this invention. The adjustable charging control system includes a charging dock, an on-board charger, a battery management system, a vehicle controller, an instrument panel, 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 socket is used to insert the charging gun. The second end of the charging socket is electrically connected to the first end of the on-board charger. The second end of the on-board 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 panel. 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 panel. The third end of the vehicle controller is electrically connected to the power battery through the low-voltage interface of the power distribution box and the charging relay. The third end of the on-board charger is electrically connected to the power battery through the charging relay of the power distribution box.

[0018] A fourth aspect of the present invention discloses an adjustable charging control device, the device comprising: Memory containing executable program code; A processor coupled to the memory; The processor calls the executable program code stored in the memory to execute some or all of the steps in the adjustable charging control method according to any of the first aspects of the present invention.

[0019] The fourth aspect of the present invention discloses a computer storage medium storing computer instructions, which, when invoked, are used to execute some or all of the steps in the adjustable charging control method described in any of the first aspects of the present invention.

[0020] Compared with the prior art, the present invention has the following beneficial effects: In this embodiment of the invention, when the charging gun is inserted into the charging socket, a wake-up signal is generated by the on-board charger. This 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 voltage of the power battery. The battery management system sends a charging request current to the on-board charger. Based on the charging gun information, battery information, and charging request information, the on-board charger determines whether the maximum output current of the charging gun matches the charging request current, 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 panel prompts the user to input the target requested current. Therefore, implementing this invention allows users to independently select the charging current according to actual conditions and can match different specifications of charging cables by controlling the charging current, improving the flexibility and safety of the charging process. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a flowchart illustrating an adjustable charging control method disclosed in an embodiment of the present invention. Figure 2 This is a flowchart illustrating another adjustable charging control method disclosed in an embodiment of the present invention. 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 4 This is a schematic diagram of another adjustable charging control system disclosed in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of an electric vehicle disclosed in an embodiment of the present invention; Figure 6This is a schematic diagram of the structure of an adjustable charging control device disclosed in an embodiment of the present invention. Detailed Implementation

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

[0024] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product, or end that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or ends.

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

[0026] This invention discloses an adjustable charging control method and system, and an electric vehicle, enabling users to independently select the charging current according to actual conditions. It also allows for matching different specifications of charging cables by controlling the charging current, improving the flexibility and safety of the charging process. These are described in detail below.

[0027] Example 1 Please see Figure 1 , Figure 1 This is a schematic flowchart of an adjustable charging control method disclosed in an embodiment of the present invention. Wherein, Figure 1 The described adjustable charging control method can be applied to an adjustable charging control system, which may include a charging dock, an on-board charger, a battery management system, a vehicle controller, an instrument panel, 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; however, this embodiment of the invention does not limit the scope. Figure 1As shown, the adjustable charging control method may include the following operations: 101. When the charging gun is inserted into the charging socket, the on-board charger generates a wake-up signal, which wakes up the battery management system, vehicle controller, and instrument panel.

[0028] In this embodiment of the invention, optionally, when the charging gun is inserted into the charging socket, the charging gun will output a signal to wake up the on-board charger. Then the on-board charger generates a wake-up signal and wakes up the battery management system, vehicle controller and instrument panel through the wake-up signal. The wake-up signal may include a 12V low-voltage electrical signal, which is not limited in this invention.

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

[0030] In this embodiment of the 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 a 220V voltage, and the battery information of the power battery may include the battery rated voltage, such as 48V. This invention does not limit the information.

[0031] In this embodiment of the invention, optionally, before the on-board charger obtains the battery information of the power battery, the following may also be included: The on-board charger detects the voltage of the power battery and determines whether the voltage is within a preset voltage range. When the voltage is outside the preset range, the on-board charger reports a battery fault and enters a sleep state. When the voltage is within the preset range, the on-board charger obtains the battery information.

[0032] Among them, the voltage V of the power battery bat Taking 48V as an example, the preset voltage range can be 44V-56V, and this invention does not limit it.

[0033] 103. The battery management system sends a charging request to the on-board charger.

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

[0035] In this embodiment of the 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 the start of charging. At this time, the battery management system enters the charging state.

[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, battery information, and charging request information, and obtains the judgment result.

[0037] In this embodiment of the invention, optionally, the on-board charger can calculate the requested input power based on 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, 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, thereby obtaining the determination 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 instrument will remind the user to input the target request current.

[0039] In this embodiment of the 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 socket may be slightly charged after long-term operation. At this time, the instrument reminds the user to input the target request current and charges according to the target request current, wherein the target request current is less than the charging request current.

[0040] It is evident that implementation Figure 1 The described adjustable charging control method generates a wake-up signal via the on-board charger when the charging gun is inserted into the charging socket. This 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 voltage of the power battery. The battery management system sends a charging request current to the on-board charger. Based on the charging gun information, battery information, and charging request information, the on-board charger determines whether the maximum output current of the charging gun matches the charging request current. If the result indicates a mismatch between the maximum output current of the charging gun and the charging request current, the instrument panel prompts the user to input the target request current. The user can independently select the charging current according to the actual situation. By controlling the charging current, different specifications of charging cables can be matched, improving the flexibility and safety of the charging process.

[0041] In an optional embodiment, when the determination result indicates that the maximum output current of the charging gun does not match the requested charging current, the instrument prompting the user to input the target requested 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 set voltage, and sends the charging request current range to the instrument. The meter prompts the user to input the target requested current based on the range of the requested charging current; Furthermore, after the meter prompts the user to input the target requested current based on the charging request current range, the adjustable charging control method may also include the following operations: The instrument panel acquires 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 selection rules, and charges the power battery according to the final current. The on-board charger sends the final current to the instrument panel, which calculates and displays the charging information based on the final current, including the remaining charging time.

[0042] In this optional embodiment, 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's set voltage. The maximum power corresponding to the charging request current range is less than the maximum output power of the charging gun, and the charging request current range is sent to the instrument panel. The instrument panel reminds the user to input the target request current based on the charging request current range. The instrument panel may include a visual display screen. After parsing the charging request current range, the instrument panel displays the charging request current range through the visual display screen to remind the user to input the target request current. The charging request current range can be converted into a preset graphic for display, such as a bar chart or column chart. The reminder to the user can include light reminders, sound reminders, etc. The user can input the corresponding current value or click or drag the graphic displayed on the screen to complete the input of the target request current. The user can also input the current via voice. This embodiment does not limit this method.

[0043] In this optional embodiment, the instrument may acquire the target requested current input by the user and send the target requested current to the on-board charger. Specifically, when the system conversion efficiency is 0.95, the charging requested current is 60A, and the battery rated voltage is 48V, the requested input power P is... 请求输入 = (60*48) / 0.95=3031W, the charging head's charging voltage is 220V, when the charging gun's duty cycle is 16%, the maximum output current of the charging gun is Imax=(D*100)*0.6=9.6A, then the maximum input power P of the charging gun at this time is... 最大输出 =220V * 9.6A = 2112W. If the user's target current request 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, 2112W. At this time, 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 filtering 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 instrument. The instrument 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] As can be seen, implementing this optional embodiment enables the on-board charger to determine the range of charging request current that matches the charging gun based on the charging gun information and the battery's set voltage when the judgment result indicates a mismatch between the maximum output current of the charging gun and the requested charging current. This range is then sent to the instrument panel, which prompts the user to input the target requested current. This improves the accuracy and reliability of the user's adjustment of the charging current, thereby enhancing the safety of the charging process. The instrument panel obtains the user's input target requested current and sends it to the on-board charger. The on-board charger filters the target requested current from the maximum output current of the charging gun according to preset filtering rules and charges the power battery based on the final current. The on-board charger sends the final current to the instrument panel, which calculates and displays the charging information. Users can independently select the charging current according to their actual situation. Controlling the charging current allows for matching different specifications of charging cables, improving the flexibility and safety of the charging process. Furthermore, the ability to visualize charging information enhances the efficiency of user access to charging information and improves the user experience.

[0045] In another alternative embodiment, when the charging gun is inserted into the charging dock, 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 via a communication circuit. Furthermore, after the on-board charger wakes up the battery management system, vehicle controller, and instrument cluster via a wake-up signal, the adjustable charging control method may also 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, it triggers the on-board charger to perform the operation of obtaining the charging gun information.

[0046] In this optional embodiment, when the charging gun is inserted into the charging socket, the on-board charger can identify the charging gun connection signal, i.e., the CC signal. After receiving the charging gun connection signal sent by the charging gun, the on-board charger activates its communication circuit 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 to indicate that the charging gun has been connected. Specifically, the CAN message can include ID: 0x18020201, where 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. Since 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, after the on-board charger wakes up the battery management system, vehicle controller, and instrument panel via 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 perform the operation of obtaining the charging gun information. When the charging gun lock is not closed, the on-board charger reports an electronic lock fault and enters a sleep state. This embodiment does not limit this.

[0048] As can be seen, implementing this optional embodiment enables the on-board charger to receive the charging gun connection signal sent by the charging gun, 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 according to the position feedback signal. When the charging gun lock is closed, it triggers the on-board charger to perform 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, which includes a charging relay. After the on-board charger wakes up the battery management system, vehicle controller, and instrument panel via a wake-up signal, the adjustable charging control method may also include the following operations: The battery management system generates control messages and sends them to the vehicle controller. The vehicle controller controls the charging relay in the power distribution box to close according to the control message; In addition, the on-board charger's acquisition of battery information from the power battery can include the following operations: The on-board charger obtains battery information from the power battery through the charging relay.

[0050] In this optional embodiment, the adjustable charging control system may further include a power distribution box, which includes a charging relay. After the on-board charger wakes up the battery management system, vehicle controller, and instrument panel via a wake-up signal, the battery management system generates a control message and sends it 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 generated B2V control word message at this time is: 0x18020203 01 00 00 00 0000 00.

[0051] In this optional embodiment, the vehicle controller controls the charging relay in the power distribution box to close according to the control message. After the charging relay closes, 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 fault and enters a sleep state. This embodiment does not limit this.

[0052] As can be seen, implementing this optional embodiment enables the on-board charger to wake up the battery management system, vehicle controller, and instrument cluster via a wake-up signal. The battery management system then 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 based on the control message. 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, as well as the efficiency and accuracy of obtaining the battery information of the power battery.

[0053] In yet another optional embodiment, the on-board charger acquiring the charging gun information of the charging gun may include the following operations: The on-board charger acquires the charging voltage and control guidance signals from the charging gun; The on-board charger determines the 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.

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

[0055] As can be seen, implementing 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 of 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, and thus improving the accuracy of subsequent current regulation.

[0056] Example 2 Please see Figure 2 , Figure 2 This is a schematic flowchart of an adjustable charging control method disclosed in an embodiment of the present invention. Wherein, Figure 2 The described adjustable charging control method can be applied to an adjustable charging control system, which may include a charging dock, an on-board charger, a battery management system, a vehicle controller, an instrument panel, 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; however, this embodiment of the invention does not limit the scope. Figure 1 As shown, the adjustable charging control method may include the following operations: 201. When the charging gun is inserted into the charging socket, the on-board charger generates a wake-up signal, which wakes up the battery management system, vehicle controller and instrument panel.

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

[0058] 203. The battery management system sends a charging request to the on-board charger.

[0059] 204. Obtain the 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 this embodiment of the invention, optionally, the system energy conversion efficiency represents the efficiency of the adjustable charging control system in converting input into output. In this embodiment, an example of a system conversion efficiency of 0.95 is used. The requested input power can be calculated based on the system energy conversion efficiency, the requested charging current, and the battery rated voltage.

[0061] Where η represents the system energy conversion efficiency, I 请 Indicates the charging request current, V bat This indicates the battery's rated voltage. When η = 0.95, I 请 =60A, V bat At 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 this embodiment of the 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... 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 this embodiment of the invention, optionally, it can be determined 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 dock 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 instrument will remind the user to input the target request current.

[0067] In this embodiment of the invention, for other descriptions of steps 201-203 and step 207, please refer to the detailed description of steps 101-103 and step 105 in Embodiment 1 of the invention. These descriptions will not be repeated in this embodiment of the invention.

[0068] It is evident that implementation Figure 2The described adjustable charging control method generates a wake-up signal via the on-board charger when the charging gun is inserted into the charging socket. This 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 voltage of the power battery. The battery management system sends a charging request current to the on-board charger, obtains the system energy conversion efficiency, and calculates the requested input power based on the system energy conversion efficiency, the charging request current, and the rated battery voltage. It also calculates the maximum input power of the charging gun based on the charging voltage and the maximum output current. The method can determine whether the maximum output current of the charging gun matches the requested charging current, improving the accuracy and reliability of the judgment. This, in turn, improves the accuracy of the subsequent input of the target requested current via the instrument panel. When the judgment result indicates a mismatch between the maximum output current of the charging gun and the requested charging current, the instrument panel prompts the user to input the target requested current. The user can independently select the charging current according to the actual situation. The method can also match different specifications of charging cables by controlling the charging current, improving the flexibility and safety of the charging process.

[0069] Example 3 Please see Figure 3 , Figure 3 This is a schematic diagram of an adjustable charging control system disclosed in an embodiment of the present invention. Figure 3 The described adjustable charging control system may include a charging dock 301, an on-board charger 302, a battery management system 303, a vehicle controller 304, an instrument panel 305, and a power battery 306. The on-board 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 transmission module 3031. The instrument panel 305 includes a reminder module 3051, wherein: The first generation module 3021 is used to generate a wake-up signal when the charging gun 401 is inserted into the charging socket 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 used to acquire the charging gun information of the charging gun 401 and the 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 used to send charging request information to the on-board charger 302, the charging request information including charging request current; The judgment module 3023 is used to determine 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 to obtain the judgment result. The reminder module 3051 is used to remind the user to input the target requested current when the judgment result indicates that the maximum output current of the charging gun does not match the charging request current.

[0070] It is evident that implementation Figure 3 The described adjustable charging control system generates a wake-up signal via the on-board charger when the charging gun is inserted into the charging socket. This wake-up signal then 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 voltage of the power battery. The battery management system sends a charging request current to the on-board charger. Based on the charging gun information, battery information, and charging request information, the on-board charger determines whether the maximum output current of the charging gun matches the requested charging current. If the result indicates a mismatch between the maximum output current and the requested charging current, the instrument panel prompts the user to input the target requested current. The user can then select the charging current according to the actual situation. By controlling the charging current, the system can match different specifications of charging cables, improving the flexibility and safety of the charging process.

[0071] In an optional embodiment, such as Figure 4 As shown, the judgment module 3023 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. The specific methods for obtaining the judgment result include: Obtain the 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; 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. If 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 requested charging current. If 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 requested charging current.

[0072] It is evident that implementation Figure 4The described adjustable charging control system generates a wake-up signal via the on-board charger when the charging gun is inserted into the charging socket. This wake-up signal wakes up the battery management system, vehicle controller, and instrument panel. The system obtains the charging voltage and maximum output voltage of the charging gun from the on-board charger, as well as the rated voltage of the power battery. The battery management system sends a charging request current to the on-board charger, obtains the system energy conversion efficiency, and calculates the requested input power based on the system energy conversion efficiency, the charging request current, and the battery rated voltage. It also calculates the maximum input power of the charging gun based on the charging voltage and the maximum output current. The system can determine whether the maximum output current of the charging gun matches the requested charging current, improving the accuracy and reliability of the judgment. This, in turn, improves the accuracy of the subsequent input of the target requested current via the instrument panel. When the judgment result indicates a mismatch between the maximum output current of the charging gun and the requested charging current, the instrument panel prompts the user to input the target requested current. The user can independently select the charging current according to the actual situation. The system can also match different specifications of charging cables by controlling the charging current, improving the flexibility and safety of the charging process.

[0073] In another alternative embodiment, such as Figure 4 As shown, when the judgment result indicates that the maximum output current of the charging gun does not match the requested charging current, the reminder module 3051 reminds the user to input the target requested current in the following ways: 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 302 determines the charging request current range that matches the charging gun based on the charging gun information and the battery set voltage, and sends the charging request current range to the instrument 305. The instrument 305 prompts the user to input the target requested current based on the range of the requested charging current; Furthermore, the instrument panel 305 also includes a second acquisition module 3052 and a display module 3053, and the on-board charger 302 also includes a screening module 3024 and a second sending module 3025, wherein: The second acquisition module 3052 is used to acquire the target request current input by the user after the reminder module 3051 reminds the user to input the target request current according to the charging request current range, and send the target request current to the on-board charger 302. The filtering module 3024 is used to filter the final current from the target requested current and the maximum output current of the charging gun according to the preset filtering rules, and to charge the power battery according to the final current. The second transmitting module 3025 is used to transmit the final current to the meter 305; The display module 3053 is used to calculate charging information based on the final current and display the charging information, including the remaining charging time.

[0074] It is evident that implementation Figure 4 The described adjustable charging control system, when the judgment result indicates a mismatch between the charging gun's maximum output current and the requested charging current, determines the range of the requested charging current that matches the charging gun based on the charging gun information and the battery's set voltage. This range is then sent to the instrument panel. The instrument panel prompts the user to input the target requested current, improving the accuracy and reliability of the user's charging current adjustment, thereby enhancing the safety of the charging process. The instrument panel acquires the user's input target requested current and sends it to the on-board charger. The on-board charger filters the target requested current from the charging gun's maximum output current according to preset filtering rules and charges the power battery based on the final current. The on-board charger sends the final current to the instrument panel, which calculates and displays the charging information. Users can independently select the charging current according to their actual needs. The system can match different specifications of charging cables by controlling the charging current, improving the flexibility and safety of the charging process. Furthermore, the system provides a visual display of charging information, improving the efficiency of user access to charging information and enhancing the user experience.

[0075] In yet another alternative embodiment, such as Figure 4 As shown, the on-board charger 302 also includes a receiving module 3026 and a third transmitting module 3027, wherein: The receiving module 3026 is used to receive the charging gun connection signal sent by the charging gun 401 when the charging gun 401 is inserted into the charging socket 301, and to activate the communication circuit of the on-board charger 302 according to the charging gun connection signal. The third transmitting module 3027 is used to send a charging gun connection signal to the battery management system 303 through a communication circuit; In addition, the on-board charger 302 also 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 to determine whether the charging gun lock is closed based on the position feedback signal; when the charging gun lock is closed, the first acquisition module 3022 is triggered to perform the operation of acquiring the charging gun information of the charging gun.

[0076] It is evident that implementation Figure 4The described adjustable charging control system 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 according to the position feedback signal. When the charging gun lock is closed, it triggers the on-board charger to perform the operation of obtaining the charging gun information, which can improve the safety and reliability of the charging process.

[0077] In yet another alternative embodiment, such as Figure 4 As shown, the adjustable charging control system also includes a power distribution box 307, which includes a charging relay. The battery management system 303 also includes a second generation module 3032, and the vehicle controller 304 includes a control module 3041, wherein: The second generation module 3032 is used to generate a control message and send the control message to the vehicle controller 304 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. Control module 3041 is used to control the closing of the charging relay in the power distribution box 307 according to the control message; Furthermore, the specific methods by which the first acquisition module 3022 acquires the battery information of the power battery 306 include: The first acquisition module 3022 acquires the battery information of the power battery 306 through the charging relay.

[0078] It is evident that implementation Figure 4 The described adjustable charging control system enables the on-board charger to wake up the battery management system, vehicle controller, and instrument panel via a wake-up signal. The battery management system then 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 based on the control message. The on-board charger obtains battery information from the power battery through the charging relay, which improves the charging safety and reliability of the power battery, as well as the efficiency and accuracy of obtaining battery information.

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

[0080] It is evident that implementation Figure 4The described adjustable charging control system 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 of 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, and thus improving the accuracy of subsequent current regulation.

[0081] Example 4 Please see Figure 5 , Figure 5 This is a structural schematic diagram 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 base 301, an on-board charger 302, a battery management system 303, a vehicle controller 304, an instrument panel 305, a power battery 306, and a power distribution box 307. The power distribution box 307 includes a charging relay K1 and a low-voltage interface K2, wherein: The first end of the charging socket 301 is used to insert the charging gun 401. The second end of the charging socket 301 is electrically connected to the first end of the on-board charger 302. The second end of the on-board 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 panel 305. 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 panel 305. The third end of the vehicle controller 304 is electrically connected to the power battery 306 through the low-voltage interface K2 of the power distribution box 307 and the charging relay K1. The third end of the on-board charger 302 is electrically connected to the power battery through the charging relay K1 of the power distribution box 307.

[0082] In this embodiment of the invention, electric vehicles may include electric excavators, electric forklifts, aerial work platforms, electric loaders, and other electric construction machinery.

[0083] It is evident that implementation Figure 5 The described electric vehicle can generate a wake-up signal via the on-board charger when the charging gun is inserted into the charging socket. This 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 voltage of the power battery. The battery management system sends a charging request current to the on-board charger. Based on the charging gun information, battery information, and charging request information, the on-board charger determines whether the maximum output current of the charging gun matches the charging request current. If the result indicates a mismatch between the maximum output current of the charging gun and the charging request current, the instrument panel prompts the user to input the target request current. The user can independently select the charging current according to the actual situation. By controlling the charging current, different specifications of charging cables can be matched, improving the flexibility and safety of the charging process.

[0084] Example 5 Please see 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: Memory 501 storing executable program code; Processor 502 coupled to memory 501; The processor 502 calls the executable program code stored in the memory 501 to execute the steps in the adjustable charging control method described in Embodiment 1 or Embodiment 2 of the present invention.

[0085] Example 6 This invention discloses a computer storage medium storing computer instructions. When these computer instructions are invoked, they are used to execute some or all of the steps in any of the adjustable charging control methods disclosed in Embodiment 1 of this invention.

[0086] Example 7 This 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 perform the steps in the adjustable charging control method described in Embodiment 1 or Embodiment 2.

[0087] The device embodiments described above are merely illustrative. The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0088] Through the detailed description of the above embodiments, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, including read-only memory (ROM), random access memory (RAM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), one-time programmable read-only memory (OTPROM), electrically-Erasable Programmable Read-Only Memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, disk storage, magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.

[0089] Finally, it should be noted that the adjustable charging control method and system and electric vehicle disclosed in the embodiments of the present invention are merely preferred embodiments of the present invention, and are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the 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 dock, an on-board charger, a battery management system, a vehicle controller, an instrument panel, and a power battery. The method includes: When the charging gun is inserted into the charging socket, the on-board charger generates a wake-up signal and wakes up the battery management system, the vehicle controller, and the instrument panel through the wake-up signal; The on-board charger acquires the charging gun information of the charging gun and the battery information of the power battery. 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 battery management system sends a charging request information to the on-board charger, the charging request information including a charging request current. 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. 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 input the target request current; And, 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 input the 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 the 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 instrument. The instrument prompts the user to input the target requested current based on the range of the requested charging current. And, after the instrument prompts the user to input a target requested current based on the charging requested current range, the method further includes: The instrument acquires 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 current with the smaller power from the target requested current and the maximum output current of the charging gun as the final current, and charges the power battery according to the final current; The on-board charger sends the final current to the instrument, which calculates charging information based on the final current and displays the charging information, including the remaining charging time.

2. The adjustable charging control method according to claim 1, characterized in that, The on-board charger determines whether the maximum output current of the charging gun matches the requested charging current based on the charging gun information, the battery information, and the charging request information, and obtains a determination result, including: Obtain the 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; 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. If 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. If 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 charging gun is inserted into the charging dock, the method further includes: 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 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 cluster via the wake-up signal, the method further includes: 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 perform the operation of obtaining the charging gun information.

4. The adjustable charging control method according to claim 1 or 2, characterized in that, The adjustable charging control system also 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 cluster via 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; And, the on-board charger acquires the battery information of the power battery, including: The on-board charger obtains the battery information of the power battery through the charging relay.

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

6. An adjustable charging control system, characterized in that, The adjustable charging control system includes a charging base, an on-board charger, a battery management system, a vehicle controller, an instrument panel, 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 transmission module. The instrument panel includes a reminder module. The first generation module is used to generate a wake-up signal when the charging gun is inserted into the charging socket, and to wake up the battery management system, the vehicle controller and the instrument panel through the wake-up signal; The first acquisition module is used to acquire the charging gun information of the charging gun and the battery information of the power battery. 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 is used to send charging request information to the on-board charger, the charging request information including a charging request current; The judgment module is used to determine 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 to obtain a judgment result. The reminder module is used to remind the user to input the target requested current when the judgment result indicates that the maximum output current of the charging gun does not match the charging request current; Furthermore, when the judgment result indicates that the maximum output current of the charging gun does not match the requested charging current, the reminder module prompts the user to input the target requested current in the following ways: 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, and sends the charging request current range to the instrument. The instrument prompts the user to input the target requested current based on the range of the requested charging current. Furthermore, the instrument also 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 used to acquire the target request current input by the user after the reminder module reminds the user to input the target request current according to the charging request current range, and send the target request current to the on-board charger; The filtering module is used to filter the current with smaller power from the target requested current and the maximum output current of the charging gun as the final current, and to charge the power battery according to the final current. The second transmitting module is used to transmit the final current to the instrument; The display module is used to calculate charging information based on the final current and display the charging information, which includes the remaining charging time.

7. An electric vehicle, characterized in that, The electric vehicle includes the adjustable charging control system as described in claim 6, the adjustable charging control system further including a power distribution box, the power distribution box including a charging relay and a low-voltage interface, wherein: The first end of the charging socket is used to insert the charging gun. The second end of the charging socket is electrically connected to the first end of the on-board charger. The second end of the on-board 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 panel. 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 panel. The third end of the vehicle controller is electrically connected to the power battery through the low-voltage interface of the power distribution box and the charging relay. The third end of the on-board charger is electrically connected to the power battery through the charging relay of the power distribution box.

8. An adjustable charging control device, characterized in that, The device includes: Memory containing 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 as described in any one of claims 1-5.

9. A computer storage medium, characterized in that, The computer storage medium stores computer instructions, which, when invoked, are used to execute the adjustable charging control method as described in any one of claims 1-5.

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