New energy vehicle charging control methods and vehicles

Abstract

This application provides a charging control method for new energy vehicles, belonging to the field of new energy vehicle overall control. When the vehicle is charging and the charging port is locked, the body domain controller monitors the unlock signal. If the unlock signal is triggered when the distance between the remote key and the body domain controller is less than a preset distance, it indicates that the user may only be returning to the vehicle to retrieve items and does not wish to stop charging. In this case, only the door is unlocked, keeping the charging port locked and not reducing the charging current. Conversely, if the unlock signal is triggered by the unlock button on the remote key or the unlock button on the door handle, it indicates that the user may indeed need to unlock the charging port and stop charging. In this case, the charging port is unlocked, and the charging current is reduced. This method flexibly determines whether to unlock the charging port and reduce the charging current based on the user's actual operation, simplifying the user's operation and improving efficiency.

Description

Technical Field

[0001] This application relates to the field of new energy vehicle control, and in particular to a new energy vehicle charging control method and vehicle. Background Technology

[0002] With the gradual improvement of supporting facilities such as charging piles and the increasing economic advantages of new energy vehicles, new energy vehicles have achieved a high penetration rate.

[0003] After the charging gun is inserted into the charging port of a new energy vehicle, the locking / unlocking status of the charging gun and the charging / not charging status are generally synchronized with the locking / unlocking status of the whole vehicle. When the whole vehicle is locked, the charging gun is locked and cannot be directly unplugged. When the whole vehicle is unlocked, the charging gun is unlocked and the charging status switches to the not charging status.

[0004] Because some models are equipped with the function of automatically unlocking the vehicle when the remote key approaches the vehicle and automatically unlocking the vehicle when it moves away from the vehicle, in actual use, the locked / unlocked state of the charging gun and the charging / not charging state may not be consistent with the user's actual needs. For example, if the user still wants to continue charging but the charging is accidentally stopped, the user needs to operate it again to continue charging, or if the user wants to stop charging and drive the vehicle, it is not convenient to stop charging and unlock the charging gun. Summary of the Invention

[0005] In view of this, this application provides a charging control method for new energy vehicles, which can simplify user operation and improve efficiency. The method includes:

[0006] On the one hand, this application provides a charging control method for new energy vehicles, the method including:

[0007] When the charging gun is connected to the vehicle's charging port and charging is performed with the first current, and both the charging port and the door are locked, the unlock signal is monitored using the vehicle domain controller.

[0008] When an unlock signal is detected by the vehicle domain controller, the trigger type of the unlock signal is determined.

[0009] When the unlock signal is triggered by distance, the vehicle domain controller unlocks the door and keeps the charging port locked.

[0010] When the unlock signal is triggered manually, the vehicle domain controller unlocks the doors and charging port, and the vehicle inverter reduces the charging current to a second current, where the second current is less than the first current. Distance trigger means that the unlock signal is triggered when the distance between the remote key and the vehicle domain controller is less than a preset distance. Manual trigger means that the unlock signal is triggered when the first unlock button on the remote key or the second unlock button on the door handle is pressed.

[0011] Alternatively, the method may also include:

[0012] When an unlock signal is detected using the vehicle domain controller, the charging time is obtained.

[0013] Determine if the charging time is less than the first preset time.

[0014] When the charging time is less than the first preset time, the vehicle domain controller unlocks the door and keeps the charging port locked.

[0015] When the charging time exceeds the first preset time, the vehicle domain controller unlocks the doors and charging port, and the on-board inverter reduces the charging current to the second current.

[0016] Alternatively, the method may also include:

[0017] When an unlock signal is detected by the vehicle domain controller, the current battery percentage is obtained from the battery management system.

[0018] Determine if the current battery percentage is less than a preset percentage.

[0019] When the current battery charge percentage is less than a preset percentage, the vehicle domain controller unlocks the doors and keeps the charging port locked.

[0020] When the current battery charge percentage is not less than the preset percentage, the vehicle domain controller unlocks the doors and charging port, and the on-board inverter reduces the charging current to the second current.

[0021] Alternatively, the method may also include:

[0022] When the vehicle domain controller continuously monitors two unlock signals within a second preset time, the vehicle domain controller unlocks the door and the charging port, and the on-board inverter reduces the charging current to the second current.

[0023] Alternatively, the method may also include:

[0024] After the charging port is unlocked, the locking signal is monitored using the vehicle domain controller.

[0025] After a third preset time has elapsed and no locking signal has been detected by the vehicle domain controller, the charging port is locked.

[0026] On the other hand, this application provides a vehicle configured as follows:

[0027] When the charging gun is connected to the vehicle's charging port and charging is performed with the first current, and both the charging port and the door are locked, the unlock signal is monitored using the vehicle domain controller.

[0028] When an unlock signal is detected by the vehicle domain controller, the trigger type of the unlock signal is determined.

[0029] When the unlock signal is triggered by distance, the vehicle domain controller unlocks the door and keeps the charging port locked.

[0030] When the unlock signal is triggered manually, the vehicle domain controller unlocks the doors and charging port, and the vehicle inverter reduces the charging current to a second current, where the second current is less than the first current. Distance trigger means that the unlock signal is triggered when the distance between the remote key and the vehicle domain controller is less than a preset distance. Manual trigger means that the unlock signal is triggered when the first unlock button on the remote key or the second unlock button on the door handle is pressed.

[0031] Alternatively, the vehicle is also configured as follows:

[0032] When an unlock signal is detected using the vehicle domain controller, the charging time is obtained.

[0033] Determine if the charging time is less than the first preset time.

[0034] When the charging time is less than the first preset time, the vehicle domain controller unlocks the door and keeps the charging port locked.

[0035] When the charging time exceeds the first preset time, the vehicle domain controller unlocks the doors and charging port, and the on-board inverter reduces the charging current to the second current.

[0036] Alternatively, the vehicle is also configured as follows:

[0037] When an unlock signal is detected by the vehicle domain controller, the current battery percentage is obtained from the battery management system.

[0038] Determine if the current battery percentage is less than a preset percentage.

[0039] When the current battery charge percentage is less than a preset percentage, the vehicle domain controller unlocks the doors and keeps the charging port locked.

[0040] When the current battery charge percentage is not less than the preset percentage, the vehicle domain controller unlocks the doors and charging port, and the on-board inverter reduces the charging current to the second current.

[0041] Alternatively, the vehicle is also configured as follows:

[0042] When the vehicle domain controller continuously monitors two unlock signals within a second preset time, the vehicle domain controller unlocks the door and the charging port, and the on-board inverter reduces the charging current to the second current.

[0043] Alternatively, the vehicle is also configured as follows:

[0044] After the charging port is unlocked, the locking signal is monitored using the vehicle domain controller.

[0045] After a third preset time has elapsed and no locking signal has been detected by the vehicle domain controller, the charging port is locked.

[0046] The new energy vehicle charging control method provided in this application, when the vehicle is charging and both the charging port and the doors are locked, monitors the unlocking signal using the vehicle domain controller. If the unlocking signal is triggered when the distance between the remote key and the vehicle domain controller is less than a preset distance, it indicates that the user may only be returning to the vehicle to retrieve items and does not wish to stop charging. In this case, only the doors are unlocked, while the charging port remains locked, maintaining normal charging without reducing the charging current. Conversely, if the unlocking signal is triggered by the first unlock button on the remote key or the second unlock button on the door handle, it indicates that the user may indeed need to unlock the charging port and stop charging. In this case, both the doors and the charging port are unlocked, and the charging current is reduced to ensure safety. This method flexibly determines whether to unlock the charging port and reduce the charging current based on the user's actual operation, avoiding the need for the user to manually unlock the charging port or reconnect the charger, simplifying the user's operation and improving efficiency. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of this application, 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 A flowchart of a new energy vehicle charging control method provided in an embodiment of this application;

[0049] Figure 2 Another flowchart of the new energy vehicle charging control method provided in the embodiments of this application;

[0050] Figure 3 This is a diagram of the vehicle architecture provided in an embodiment of this application. Detailed Implementation

[0051] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0052] This application provides a method for controlling the charging of new energy vehicles, such as... Figure 1 As shown, the method includes steps S101, S102, S103, and S104, wherein:

[0053] In step S101, when the charging gun is connected to the vehicle's charging port and the vehicle is charged with a first current, and both the charging port and the door are locked, the unlocking signal is monitored by the vehicle domain controller.

[0054] In step S102, when an unlock signal is detected by the vehicle domain controller, the trigger type of the unlock signal is determined.

[0055] In step S103, when the unlock signal is triggered by distance, the vehicle domain controller unlocks the door and keeps the charging port locked.

[0056] In step S104, when the unlock signal is triggered manually, the vehicle domain controller unlocks the doors and charging ports, and the on-board inverter reduces the charging current to the second current.

[0057] Among them, the second current is less than the first current, the distance trigger means that the unlock signal is triggered when the distance between the remote key and the vehicle domain controller is less than a preset distance, and the manual trigger means that the unlock signal is triggered when the first unlock button on the remote key or the second unlock button on the door handle is pressed.

[0058] In some optional embodiments, the method further includes:

[0059] When an unlock signal is detected using the vehicle domain controller, the charging time is obtained.

[0060] Determine if the charging time is less than the first preset time.

[0061] When the charging time is less than the first preset time, the vehicle domain controller unlocks the door and keeps the charging port locked.

[0062] When the charging time exceeds the first preset time, the vehicle domain controller unlocks the doors and charging port, and the on-board inverter reduces the charging current to the second current.

[0063] In some optional embodiments, the method further includes:

[0064] When an unlock signal is detected by the vehicle domain controller, the current battery percentage is obtained from the battery management system.

[0065] Determine if the current battery percentage is less than a preset percentage.

[0066] When the current battery charge percentage is less than a preset percentage, the vehicle domain controller unlocks the doors and keeps the charging port locked.

[0067] When the current battery charge percentage is not less than the preset percentage, the vehicle domain controller unlocks the doors and charging port, and the on-board inverter reduces the charging current to the second current.

[0068] In some optional embodiments, the method further includes:

[0069] When the vehicle domain controller continuously monitors two unlock signals within a second preset time, the vehicle domain controller unlocks the door and the charging port, and the on-board inverter reduces the charging current to the second current.

[0070] In some optional embodiments, the method further includes:

[0071] After the charging port is unlocked, the locking signal is monitored using the vehicle domain controller.

[0072] After a third preset time has elapsed and no locking signal has been detected by the vehicle domain controller, the charging port is locked.

[0073] The new energy vehicle charging control method provided in this application, when the vehicle is charging and both the charging port and the doors are locked, monitors the unlocking signal using the vehicle domain controller. If the unlocking signal is triggered when the distance between the remote key and the vehicle domain controller is less than a preset distance, it indicates that the user may only be returning to the vehicle to retrieve items and does not wish to stop charging. In this case, only the doors are unlocked, while the charging port remains locked, maintaining normal charging without reducing the charging current. Conversely, if the unlocking signal is triggered by the first unlock button on the remote key or the second unlock button on the door handle, it indicates that the user may indeed need to unlock the charging port and stop charging. In this case, both the doors and the charging port are unlocked, and the charging current is reduced to ensure safety. This method flexibly determines whether to unlock the charging port and reduce the charging current based on the user's actual operation, avoiding the need for the user to manually unlock the charging port or reconnect the charger, simplifying the user's operation and improving efficiency.

[0074] This application provides a method for controlling the charging of new energy vehicles, such as... Figure 2 As shown, the method includes steps S201, S202, S203, S204, S205, and S206, wherein:

[0075] In step S201, when the charging gun is connected to the vehicle's charging port and the vehicle is being charged with a first current, and both the charging port and the door are locked, the unlocking signal is monitored using the vehicle domain controller.

[0076] In some optional embodiments, the charging port can refer to a slow charging port (receiving DC or AC power) or a fast charging port (receiving DC power). When the user inserts the charging gun into the charging port and controls the charging pile to start charging using NFC, Bluetooth, or QR code scanning, the vehicle's charging port will establish an electrical connection with the charging gun, and the vehicle will be charged with a first current under the control of the on-board inverter.

[0077] In step S202, when an unlock signal is detected by the vehicle domain controller, the trigger type of the unlock signal is determined.

[0078] Understandably, for vehicles equipped with the function of automatically unlocking when the remote key approaches the vehicle and automatically unlocking when it moves away from the vehicle, when the unlock signal is detected by the body domain controller, it may indicate the following three situations:

[0079] Scenario 1: A user accidentally approaches the vehicle with the remote key and enters the unlocking range, triggering the automatic unlocking function when the remote key approaches the vehicle. However, the user does not actually want to unlock the vehicle, nor does he / she want to unlock the charging port and stop charging (after stopping charging, the user needs to repeatedly use NFC, Bluetooth, or QR code scanning to control the charging station to start charging again).

[0080] Scenario 2: The user approaches the vehicle with the remote key and enters the unlocking range, triggering the automatic unlocking function when the remote key approaches the vehicle. However, the user actually only wants to return to the car to retrieve a forgotten item and does not want to unlock the charging port and stop charging (after stopping charging, the user needs to repeatedly use NFC, Bluetooth, or QR code scanning to control the charging station to restart charging).

[0081] Scenario 3: The user approaches the vehicle with the remote key and enters the unlocking range, triggering the automatic unlocking function when the remote key approaches the vehicle, and the user actually wants to unlock the charging port and stop charging.

[0082] In the first two scenarios, unlocking the charging port and stopping charging would obviously require the user to repeatedly use NFC, Bluetooth, or QR code scanning to restart charging, which is very cumbersome. Both of these scenarios are triggered when the user approaches the vehicle with the remote key, entering the unlocking range and triggering the automatic unlocking function. Therefore, when the vehicle domain controller detects an unlock signal, it's necessary to further determine the trigger type and implement corresponding charging control strategies to better meet user needs and simplify operations.

[0083] In step S203, when the unlock signal is triggered by distance, the vehicle domain controller unlocks the door and keeps the charging port locked.

[0084] Distance trigger means that the unlock signal is triggered when the distance between the remote key and the vehicle domain controller is less than a preset distance.

[0085] Understandably, when the unlock signal trigger type is distance-triggered, it indicates that the user has approached the vehicle with the remote key and entered the unlocking range, triggering the automatic unlocking function when the remote key approaches the vehicle. In this case, if the user's needs correspond to situations 1 and 2 above—that is, the user does not want to stop charging—the charging port should not be unlocked, and charging should continue at the first current. Therefore, when the unlock signal trigger type is determined to be distance-triggered, the vehicle domain controller only unlocks the door and keeps the charging port locked. Simultaneously, the onboard inverter continues to maintain the charging current at the first current, i.e., continues normal charging.

[0086] If the user's need corresponds to scenario 3 above, i.e., the user wants to stop charging and unlock the charging port so that they can subsequently unplug the charging gun and drive the vehicle away, then step S203 cannot meet the user's needs. However, the user can also conveniently and quickly stop charging and unlock the charging port with just one additional manual operation. This manual operation can be pressing the first unlock button on the remote key or pressing the second unlock button on the door handle. Further implementation methods are described in step S204:

[0087] In step S204, when the unlock signal is triggered manually, the vehicle domain controller unlocks the doors and charging ports, and the on-board inverter reduces the charging current to the second current.

[0088] It is understandable that the manual trigger means that the unlock signal is triggered when the first unlock button on the remote key or the second unlock button on the door handle is pressed.

[0089] The vehicle inverter reduces the charging current to a second current, which is less than the first current, thus ensuring safety when plugging and unplugging the charging gun. The second current can be 16A.

[0090] Understandably, after a user approaches the vehicle with the remote key and enters the unlocking range, triggering the automatic unlocking function when the remote key approaches the vehicle, although step S203 cannot unlock the charging port and stop charging, requiring the user to perform an additional manual operation and further utilize step S204 to unlock the charging port and stop charging, this additional manual operation (i.e., pressing the first unlock button on the remote key or the second unlock button on the door handle) is significantly simpler and faster than the operation of controlling the charging station to restart charging via NFC, Bluetooth, or QR code scanning after an incorrect charging stop, thus improving user efficiency.

[0091] Understandably, if a user accidentally presses the first unlock button on the remote key or the second unlock button on the door handle, causing the charging port to unlock and stop charging, but the user does not actually want the charging port to be unlocked and charging to stop, then a method is needed to automatically relock the charging port and resume charging, simplifying the user's operation.

[0092] Therefore, after unlocking the charging port using step S204, the method also includes steps S205 and S206:

[0093] In step S205, the vehicle body domain controller is used to monitor the locking signal.

[0094] The locking signal can be triggered when the distance between the remote key and the vehicle domain controller is greater than a preset distance, or it can be triggered by the first locking button on the remote key or the second locking button on the door handle (the second locking button and the second unlocking button on the door handle can be the same button, and its function alternates between locking and unlocking depending on the user's operation).

[0095] In step S206, after a third preset time has elapsed and no locking signal is detected by the vehicle domain controller, the charging port is locked.

[0096] Understandably, if a user accidentally unlocks the charging port and no locking signal is detected after the third preset time, it means the user is unaware that their action has unlocked the charging port and has not taken any action to relock it after a period of time. In this case, the charging port can be locked directly to prevent others from unplugging the charging gun.

[0097] In some optional embodiments, after locking the charging port using step S206, if the charging gun and the charging port are not detected to be disconnected after a third preset time, and the charging current is not detected to return to the first current after a third preset time, the vehicle inverter can control the charging current to return to the first current.

[0098] The third preset time can be 10 minutes.

[0099] Understandably, if a user accidentally stops charging and no disconnection is detected between the charging gun and the charging port after the third preset time, it means that the user is unaware that their operation caused the charging to stop and has not taken any corresponding action to resume charging after a period of time. In this case, based on step S206, the vehicle inverter can control the charging current to return to the first current, thus resuming normal charging.

[0100] Understandably, whether a user wants to stop charging generally depends on the charging time and the current battery percentage. If the charging time is very short or the current battery percentage is very low, and an unlock signal is detected, it usually indicates that the user has accidentally touched the button or simply wants to return to the vehicle to retrieve an item and does not want to stop charging.

[0101] Therefore, in some alternative embodiments, the method further includes:

[0102] When an unlock signal is detected using the vehicle domain controller, the charging time is obtained.

[0103] Determine if the charging time is less than the first preset time.

[0104] When the charging time is less than the first preset time, the vehicle domain controller unlocks the door and keeps the charging port locked.

[0105] Understandably, when the charging time is less than the first preset time, the vehicle domain controller unlocks the door, keeps the charging port locked, and the on-board inverter maintains the charging current at the first current.

[0106] When the charging time exceeds the first preset time, the vehicle domain controller unlocks the doors and charging port, and the on-board inverter reduces the charging current to the second current.

[0107] The first preset time can be 5 minutes.

[0108] In some optional embodiments, the method further includes:

[0109] When an unlock signal is detected by the vehicle domain controller, the current battery percentage is obtained from the battery management system.

[0110] Determine if the current battery percentage is less than a preset percentage.

[0111] When the current battery charge percentage is less than a preset percentage, the vehicle domain controller unlocks the doors and keeps the charging port locked.

[0112] Understandably, when the current battery charge percentage is less than the preset percentage, the vehicle domain controller unlocks the doors, keeps the charging port locked, and the on-board inverter simultaneously maintains the charging current at the first current.

[0113] When the current battery charge percentage is not less than the preset percentage, the vehicle domain controller unlocks the doors and charging port, and the on-board inverter reduces the charging current to the second current.

[0114] The default percentage can be 10%.

[0115] In some optional embodiments, the method further includes:

[0116] When the vehicle domain controller continuously monitors two unlock signals within a second preset time, the vehicle domain controller unlocks the door and the charging port, and the on-board inverter reduces the charging current to the second current.

[0117] Understandably, if a user triggers the unlock signal twice in a short period of time, it indicates that the unlock signal was not generated by the user's accidental touch. Alternatively, the user may have approached the vehicle with the remote key, entered the unlocking range, triggered the automatic unlocking function when the remote key approaches the vehicle, and wished to unlock the charging port, stop charging, and unplug the charging gun. However, due to step S203, if the user finds they cannot unplug the charging gun, they can leave the unlocking range and re-enter it. This satisfies the condition of triggering the unlock signal twice in a short period. In this case, the triggering method of the unlock signal can be disregarded, and the door and charging port can be unlocked directly. The vehicle inverter reduces the charging current to a second current, allowing the user to successfully unplug the charging gun after leaving and re-entering the unlocking range.

[0118] In some optional embodiments, if the vehicle inverter receives a lock signal and the vehicle inverter is in a charging, discharging, or heating state, the charging port is locked.

[0119] In some optional embodiments, if the charging port is a slow charging port, the charging port can also be connected to a discharge gun to achieve external discharge. When the discharge gun is connected to the charging port, the charging port will be unlocked if the release switch on the discharge gun is pressed.

[0120] If the charging port performs three unlocking and locking operations within the fourth preset time, the electronic lock of the charging port will report an error status and will not perform unlocking or locking operations on the charging port again within a power-on cycle.

[0121] The charging port can have terminals such as CC, CP, L, N, and PE to receive signal transmission and current output from the charging pile and the vehicle inverter, while also executing the control requirements of the vehicle inverter and locking or unlocking the electronic lock of the charging port.

[0122] The vehicle also includes a low-voltage wiring harness for connecting the charging port, on-board inverter, body domain controller, etc., to form a low-voltage circuit to ensure the transmission of their respective signals and electrical energy.

[0123] The new energy vehicle charging control method provided in this application, when the vehicle is charging and both the charging port and the doors are locked, monitors the unlocking signal using the vehicle domain controller. If the unlocking signal is triggered when the distance between the remote key and the vehicle domain controller is less than a preset distance, it indicates that the user may only be returning to the vehicle to retrieve items and does not wish to stop charging. In this case, only the doors are unlocked, while the charging port remains locked, maintaining normal charging without reducing the charging current. Conversely, if the unlocking signal is triggered by the first unlock button on the remote key or the second unlock button on the door handle, it indicates that the user may indeed need to unlock the charging port and stop charging. In this case, both the doors and the charging port are unlocked, and the charging current is reduced to ensure safety. This method flexibly determines whether to unlock the charging port and reduce the charging current based on the user's actual operation, avoiding the need for the user to manually unlock the charging port or reconnect the charger, simplifying the user's operation and improving efficiency.

[0124] This application also provides a vehicle, such as... Figure 3 As shown, the vehicle includes a body domain controller 301 and an on-board inverter 302 connected via a CAN bus, and the vehicle is configured as follows:

[0125] When the charging gun is connected to the vehicle's charging port and charging is performed with the first current, and both the charging port and the door are locked, the unlock signal is monitored by the body domain controller 301.

[0126] When the unlock signal is detected by the vehicle domain controller 301, the trigger type of the unlock signal is determined.

[0127] When the unlock signal is triggered by distance, the vehicle domain controller 301 unlocks the door and keeps the charging port locked.

[0128] When the unlock signal is triggered manually, the vehicle domain controller 301 unlocks the doors and charging port, and the vehicle inverter 302 reduces the charging current to a second current, wherein the second current is less than the first current. Distance trigger means that the unlock signal is triggered when the distance between the remote key and the vehicle domain controller 301 is less than a preset distance. Manual trigger means that the unlock signal is triggered when the first unlock button on the remote key or the second unlock button on the door handle is pressed.

[0129] Alternatively, the vehicle is also configured as follows:

[0130] When the unlock signal is detected by the vehicle domain controller 301, the charging time is obtained.

[0131] Determine if the charging time is less than the first preset time.

[0132] When the charging time is less than the first preset time, the vehicle domain controller 301 unlocks the door and keeps the charging port locked.

[0133] When the charging time exceeds the first preset time, the vehicle domain controller 301 unlocks the doors and charging port, and the on-board inverter 302 reduces the charging current to the second current.

[0134] Alternatively, the vehicle is also configured as follows:

[0135] When an unlock signal is detected by the vehicle domain controller 301, the current battery percentage is obtained from the battery management system.

[0136] Determine if the current battery percentage is less than a preset percentage.

[0137] When the current battery charge percentage is less than a preset percentage, the vehicle domain controller 301 unlocks the doors and keeps the charging port locked.

[0138] When the current battery charge percentage is not less than the preset percentage, the vehicle domain controller 301 unlocks the doors and charging port, and the vehicle inverter 302 reduces the charging current to the second current.

[0139] Alternatively, the vehicle is also configured as follows:

[0140] When the vehicle domain controller 301 continuously monitors two unlock signals within a second preset time, the vehicle domain controller 301 unlocks the door and the charging port, and the vehicle inverter 302 reduces the charging current to the second current.

[0141] Alternatively, the vehicle is also configured as follows:

[0142] After the charging port is unlocked, the locking signal is monitored using the vehicle domain controller 301.

[0143] After a third preset time has elapsed and no locking signal has been detected by the vehicle domain controller 301, the charging port is locked.

[0144] Using the vehicle provided in this application, when the vehicle is charging and both the charging port and the doors are locked, the vehicle body domain controller 301 monitors the unlock signal. If the unlock signal is triggered when the distance between the remote key and the vehicle body domain controller 301 is less than a preset distance, it indicates that the user may only be returning to the vehicle to retrieve items and does not wish to stop charging. In this case, only the doors are unlocked, while the charging port remains locked, maintaining normal charging without reducing the charging current. Conversely, if the unlock signal is triggered by the first unlock button on the remote key or the second unlock button on the door handle, it indicates that the user may indeed need to unlock the charging port and stop charging. In this case, both the doors and the charging port are unlocked, and the charging current is reduced to ensure safety. This allows for flexible determination of whether to unlock the charging port and reduce the charging current based on the user's actual operation, avoiding the need for the user to manually unlock the charging port or reconnect the charging, simplifying the user's operation and improving efficiency.

[0145] In this application, it should be understood that the terms “first”, “second”, etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0146] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

[0147] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

[0148] The above description is only for the purpose of enabling those skilled in the art to understand the technical solution of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A charging control method for new energy vehicles, characterized in that, The method includes: When a charging gun is connected to the vehicle's charging port and charging is performed with a first current, and both the charging port and the door are locked, the unlocking signal is monitored using the vehicle domain controller. When the unlock signal is detected by the vehicle domain controller, the trigger type of the unlock signal is determined. When the unlock signal is triggered by distance, the vehicle domain controller unlocks the door and keeps the charging port locked. When the unlock signal is triggered manually, the vehicle domain controller unlocks the door and the charging port. The on-board inverter reduces the charging current to a second current, where the second current is less than the first current. Distance triggering means the unlock signal is triggered when the distance between the remote key and the vehicle domain controller is less than a preset distance. Manual triggering means the unlock signal is triggered when the first unlock button on the remote key or the second unlock button on the door handle is pressed. The method further includes: When the vehicle domain controller continuously monitors two unlocking signals within a second preset time, the vehicle domain controller unlocks the door and the charging port, and the vehicle inverter reduces the charging current to the second current. After the charging port is unlocked, the locking signal is monitored using the vehicle domain controller; After a third preset time has elapsed and no locking signal has been detected by the vehicle domain controller, the charging port is locked.

2. The new energy vehicle charging control method according to claim 1, characterized in that, The method further includes: When the unlock signal is detected by the vehicle domain controller, the charging time is obtained. Determine whether the charging time is less than a first preset time; When the charging time is less than the first preset time, the vehicle domain controller unlocks the door and keeps the charging port locked. When the charging time exceeds the first preset time, the vehicle domain controller unlocks the door and the charging port, and the vehicle inverter reduces the charging current to the second current.

3. The new energy vehicle charging control method according to claim 1, characterized in that, The method further includes: When the unlock signal is detected by the vehicle domain controller, the current battery percentage is obtained from the battery management system. Determine whether the current battery percentage is less than a preset percentage; When the current battery charge percentage is less than the preset percentage, the vehicle domain controller unlocks the door and keeps the charging port locked. When the current battery charge percentage is not less than the preset percentage, the vehicle domain controller unlocks the door and the charging port, and the vehicle inverter reduces the charging current to the second current.

4. A vehicle, characterized in that, The vehicle is configured as follows: When a charging gun is connected to the vehicle's charging port and charging is performed with a first current, and both the charging port and the door are locked, the unlocking signal is monitored using the vehicle domain controller. When the unlock signal is detected by the vehicle domain controller, the trigger type of the unlock signal is determined. When the unlock signal is triggered by distance, the vehicle domain controller unlocks the door and keeps the charging port locked. When the unlock signal is triggered manually, the vehicle domain controller unlocks the door and the charging port. The on-board inverter reduces the charging current to a second current, where the second current is less than the first current. Distance triggering means the unlock signal is triggered when the distance between the remote key and the vehicle domain controller is less than a preset distance. Manual triggering means the unlock signal is triggered when the first unlock button on the remote key or the second unlock button on the door handle is pressed. The vehicle is also configured to: When the vehicle domain controller continuously monitors two unlocking signals within a second preset time, the vehicle domain controller unlocks the door and the charging port, and the vehicle inverter reduces the charging current to the second current. After the charging port is unlocked, the locking signal is monitored using the vehicle domain controller; After a third preset time has elapsed and no locking signal has been detected by the vehicle domain controller, the charging port is locked.

5. The vehicle according to claim 4, characterized in that, The vehicle is also configured to: When the unlock signal is detected by the vehicle domain controller, the charging time is obtained. Determine whether the charging time is less than a first preset time; When the charging time is less than the first preset time, the vehicle domain controller unlocks the door and keeps the charging port locked. When the charging time exceeds the first preset time, the vehicle domain controller unlocks the door and the charging port, and the vehicle inverter reduces the charging current to the second current.

6. The vehicle according to claim 4, characterized in that, The vehicle is also configured to: When the unlock signal is detected by the vehicle domain controller, the current battery percentage is obtained from the battery management system. Determine whether the current battery percentage is less than a preset percentage; When the current battery charge percentage is less than the preset percentage, the vehicle domain controller unlocks the door and keeps the charging port locked. When the current battery charge percentage is not less than the preset percentage, the vehicle domain controller unlocks the door and the charging port, and the vehicle inverter reduces the charging current to the second current.

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