Vehicle, charging system, charging method, and computer-readable storage medium thereof

Abstract

A vehicle and its charging system, charging method and computer-readable storage medium, wherein the vehicle charging system comprises: a first detection circuit (10) for detecting the connection status of a first charging gun (11); a second detection circuit (20) for detecting the connection status of multiple second charging guns (21); a first charging circuit (30) for charging a power battery of the vehicle through the first charging gun (11); multiple second charging circuits (40), the multiple second charging circuits (40) corresponding to the multiple second charging guns (21) one-to-one, each second charging circuit (40) for charging the power battery through the corresponding second charging gun (21); a controller (50) for determining the connection status of the first charging gun (11) and the connection status of the multiple second charging guns (21), and controlling the first charging circuit (30) and the multiple second charging circuits (40) according to the charging parameters corresponding to the connection status to charge the power battery. Thus, the system can realize multi-gun fast charging based on the two detection circuits.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a vehicle and its charging system, charging method, and computer-readable storage medium. Background Art

[0002] Electric vehicles are environmentally friendly vehicles that are equipped with power batteries to provide driving power. When the power is insufficient, the power batteries are charged through charging stations.

[0003] In related technologies, the vehicle's DC charging gun connection signal detection resources correspond to the charging gun, making it difficult to achieve multi-gun fast charging. Summary of the Invention

[0004] In view of the above problems, the present application provides a vehicle and its charging system, charging method and computer-readable storage medium, which can achieve multi-gun fast charging.

[0005] In the first aspect, the present application provides a vehicle charging system, which includes: a first detection circuit for detecting the connection status of a first charging gun; a second detection circuit for detecting the connection status of multiple second charging guns; a first charging circuit for charging a power battery of a vehicle through the first charging gun; multiple second charging circuits, the multiple second charging circuits corresponding one-to-one to the multiple second charging guns, and each second charging circuit for charging the power battery through a corresponding charging gun; a controller for determining the connection status of the first charging gun and the connection status of the multiple second charging guns, and controlling the first charging circuit and the multiple second charging circuits according to the charging parameters corresponding to the connection status to charge the power battery.

[0006] In the technical solution of the embodiment of the present application, the connection status of the first charging gun is detected by the first detection circuit, and the connection status of multiple second charging guns is detected by the second detection circuit. The first charging circuit charges the vehicle's power battery through the first charging gun, and the multiple second charging circuits correspond one-to-one to the multiple second charging guns. Each second charging circuit charges the power battery through the corresponding charging gun. The controller determines the connection status of the first charging gun and the connection status of the multiple second charging guns, and controls the first charging circuit and the multiple second charging circuits according to the charging parameters corresponding to the connection status to charge the power battery. In this way, during the vehicle charging process, the connection status of multiple charging guns can be detected through the two-way detection circuit, thereby determining the number of charging guns currently in the connected state, and determining the corresponding charging parameters based on the connection status of the charging guns to control the charging circuit. Therefore, the system can realize multi-gun fast charging based on the two-way detection circuit.

[0007] In some embodiments, the vehicle charging system also includes: a first charging interface, the first connection confirmation end of the first charging interface is connected to the first detection circuit, and the connection status of the first charging gun is determined by detecting the voltage of the first connection confirmation end by the first detection circuit; multiple second charging interfaces, the second connection confirmation end of each second charging interface in the multiple second charging interfaces is connected to the second detection circuit after being connected, and the connection status of the multiple second charging guns is determined by detecting the voltage of the second connection confirmation end by the second detection circuit.

[0008] In some embodiments, both the first detection circuit and the second detection circuit include: a voltage divider circuit, the input end of the voltage divider circuit is connected to the corresponding connection confirmation end, and is used to divide the voltage of the corresponding connection confirmation end to obtain a first voltage; a filter circuit, the input end of the filter circuit is connected to the output end of the voltage divider circuit, and is used to filter the first voltage to obtain a second voltage; and a controller is connected to the output end of the filter circuit, and is used to determine the connection status of the corresponding charging gun based on the second voltage.

[0009] In some embodiments, the voltage divider circuit includes: a first resistor, wherein the first end of the first resistor is connected to a preset power supply; a second resistor, wherein the first end of the second resistor is connected to the second end of the first resistor and forms a first node, the second end of the second resistor is grounded, and the first node is connected to the corresponding connection confirmation end; a third resistor, wherein the first end of the third resistor is connected to the first node, and the second end of the third resistor is connected to the input end of the filter circuit; and a fourth resistor, wherein the first end of the fourth resistor is connected to the second end of the third resistor, and the second end of the fourth resistor is grounded.

[0010] In some embodiments, the filtering circuit includes: a fifth resistor, the first end of the fifth resistor is connected to the output end of the voltage divider circuit, and the second end of the fifth resistor is connected to the controller; a first capacitor, the first end of the first capacitor is connected to the second end of the fifth resistor, and the second end of the first capacitor is grounded.

[0011] In some embodiments, the first charging gun and each of the plurality of second charging guns include: a sixth resistor, a first end of the sixth resistor being connected to the third connection confirmation end of the corresponding charging gun, and a second end of the sixth resistor being grounded.

[0012] In some embodiments, the first charging circuit includes: a first charging switch, wherein the first end of the first charging switch is connected to the positive terminal of the power battery, and the second end of the first charging switch is connected to the first positive charging connection terminal of the first charging interface; and a second charging switch, wherein the first end of the second charging switch is connected to the negative terminal of the power battery, and the second end of the second charging switch is connected to the first negative charging connection terminal of the first charging interface.

[0013] In some embodiments, the second charging circuit includes: a third charging switch, wherein a first end of the third charging switch is connected to the positive terminal of the power battery, and a second end of the third charging switch is respectively connected to the second charging connection positive terminal of each second charging interface in the multiple second charging interfaces; and a fourth charging switch, wherein a first end of the fourth charging switch is connected to the negative terminal of the power battery, and a second end of the fourth charging switch is respectively connected to the second charging connection negative terminal of each second charging interface in the multiple second charging interfaces.

[0014] In some embodiments, when the number of multiple second charging guns is two, the controller is also used to: if the first charging gun is in a connected state and each of the two second charging guns is in a non-connected state, determine that the charging mode is a single-gun charging mode; if the first charging gun is in a non-connected state and each of the two second charging guns is in a connected state, determine that the charging mode is a dual-gun charging mode; if the first charging gun and each of the two second charging guns are in a connected state, determine that the charging mode is a three-gun charging mode.

[0015] In some embodiments, the controller is also used to: if the charging mode is a single-gun charging mode, interact with the charging pile by modifying the offset; if the charging mode is a dual-gun charging mode, interact with the charging pile by modifying the offset; if the charging mode is a three-gun charging mode, interact with the charging pile by using a complement code.

[0016] In some embodiments, the maximum charging current of the power battery corresponding to the single-gun charging mode is 200A, the maximum charging current of the power battery corresponding to the dual-gun charging mode is 400A, and the maximum charging current of the power battery corresponding to the triple-gun charging mode is 600A.

[0017] In a second aspect, the present application provides a vehicle comprising the above-mentioned vehicle charging system.

[0018] The vehicle of the embodiment of the present application is based on the above-mentioned vehicle charging system. During the vehicle charging process, the connection status of multiple charging guns can be detected through two detection circuits, so as to determine the number of charging guns currently in a connected state, and determine the corresponding charging parameters based on the connection status of the charging guns to control the charging circuit. Therefore, the system can realize multi-gun fast charging based on the two detection circuits.

[0019] In a third aspect, the present application provides a vehicle charging method, which includes: determining the connection status of multiple charging guns; and controlling multiple charging circuits of the vehicle according to charging parameters corresponding to the connection status to charge the power battery.

[0020] In the technical solution of the embodiment of the present application, the charging mode of the vehicle's power battery is determined based on the connection status of multiple charging guns, and the charging mode is interacted with the corresponding charging pile. Then, based on the interaction information, the multiple charging circuits of the vehicle are controlled to charge the power battery. In this way, during the vehicle charging process, by detecting the connection status of multiple charging guns, the number of charging guns currently in a connected state is determined, and the multiple charging circuits are controlled based on the connection status of the charging guns. As a result, this method can achieve multi-gun fast charging of the vehicle.

[0021] In some embodiments, the method further includes: determining a charging mode of the vehicle's power battery according to the connection status; and interacting with charging piles corresponding to a plurality of charging guns according to the charging mode.

[0022] In some embodiments, if the charging mode is a single-gun charging mode, the offset modification method is used to interact with the charging pile; if the charging mode is a dual-gun charging mode, the offset modification method is used to interact with the charging pile; if the charging mode is a three-gun charging mode, the complement method is used to interact with the charging pile.

[0023] In some embodiments, the maximum charging current of the power battery corresponding to the single-gun charging mode is 200A, the maximum charging current of the power battery corresponding to the dual-gun charging mode is 400A, and the maximum charging current of the power battery corresponding to the triple-gun charging mode is 600A.

[0024] In a fourth aspect, the present application provides a computer-readable storage medium having a program stored thereon, which implements the above-mentioned vehicle charging method when executed by a processor.

[0025] In the technical solution of the embodiment of the present application, when the computer-readable storage medium executes the program, through the aforementioned vehicle charging method, during the vehicle charging process, the connection status of multiple charging guns can be detected through two detection circuits, thereby determining the number of charging guns currently in a connected state, and controlling the charging circuit based on the connection status of the charging guns, thereby realizing multi-gun fast charging of the vehicle.

[0026] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0028] Figure 1 This is a block diagram of a vehicle charging system according to some embodiments of the present application;

[0029] Figure 2 A circuit topology diagram of a vehicle charging system according to some embodiments of the present application;

[0030] Figure 3 A circuit topology diagram of a first detection loop and a second detection loop in some embodiments of the present application;

[0031] Figure 4 This is an example diagram of the application of the first detection circuit in some embodiments of the present application;

[0032] Figure 5 This is an example diagram of the application of the second detection circuit in some embodiments of the present application;

[0033] Figure 6 A circuit topology diagram of a vehicle charging system in related art;

[0034] Figure 7 A schematic structural diagram of a vehicle according to some embodiments of the present application;

[0035] Figure 8 This is a flow chart of a vehicle charging method according to some embodiments of the present application. DETAILED DESCRIPTION

[0036] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0038] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0039] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0041] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0042] In related technologies, the vehicle is equipped with two DC charging gun connection signal detection resources, which detect the connection status of the two charging guns separately, making it difficult to achieve multi-gun fast charging.

[0043] In order to solve the problem that it is difficult for the above-mentioned vehicles to achieve multi-gun fast charging, the present application provides a vehicle charging system, which detects the connection status of the first charging gun through a first detection circuit, and detects the connection status of multiple second charging guns through a second detection circuit. The first charging circuit charges the vehicle's power battery through the first charging gun, and the multiple second charging circuits correspond one-to-one to the multiple second charging guns. Each second charging circuit charges the power battery through the corresponding charging gun. The controller determines the charging mode of the power battery according to the connection status of the first charging gun and the connection status of the multiple second charging guns, and interacts with the first charging gun and the multiple second charging guns according to the charging mode, and controls the first charging circuit and the multiple second charging circuits according to the interaction information to charge the power battery. In this way, during the vehicle charging process, the connection status of multiple charging guns can be detected through the two-way detection circuit, thereby determining the number of charging guns currently in the connected state, and determining the interaction method with the charging gun and the charging mode of the power battery based on the connection status of the charging gun. Therefore, the system can achieve multi-gun fast charging based on the two-way detection circuit.

[0044] According to some embodiments of the present application, referring to Figure 1 The vehicle charging system includes: a first detection circuit 10, a second detection circuit 20, a first charging circuit 30, a plurality of second charging circuits 40 and a controller 50.

[0045] The first detection circuit 10 is used to detect the connection status of the first charging gun 11. The second detection circuit 20 is used to detect the connection status of multiple second charging guns 21. The first charging circuit 30 is used to charge the vehicle's power battery through the first charging gun 11. Multiple second charging circuits 40 correspond one-to-one to the multiple second charging guns 21, and each second charging circuit 40 is used to charge the power battery through a corresponding charging gun. The controller 50 is used to determine the connection status of the first charging gun 11 and the connection status of the multiple second charging guns 21, and to control the first charging circuit 30 and the multiple second charging circuits 40 according to the charging parameters corresponding to the connection status to charge the power battery.

[0046] The power battery is the vehicle's energy storage unit and source of power. When the power battery is low, it can be recharged by connecting the charging gun of a charging station to the corresponding charging port on the vehicle. The charging port is a charging socket equipped on the vehicle that matches the charging gun.

[0047] Reference Figure 1As shown, the charging pile includes a first charging gun 11 and multiple second charging guns 21. The first charging gun 11 and / or multiple second charging guns 21 are connected to the charging interface on the vehicle to charge the vehicle's power battery. When the first charging gun 11 is connected to the corresponding charging interface on the vehicle, the first charging circuit 30 in the vehicle is controlled to be conductive, thereby charging the vehicle's power battery. When multiple second charging guns 21 are connected to the corresponding charging interfaces on the vehicle, the multiple second charging circuits 40 are controlled to be conductive, thereby charging the vehicle's power battery. Among them, the charging circuits in the vehicle correspond one-to-one with the vehicle's charging interfaces.

[0048] The controller 50 evaluates whether the vehicle's charging port is connected to the charging gun based on the charging gun's connection status. If the charging port is connected, the controller 50 controls the conduction of the charging circuit corresponding to the charging port to charge the power battery. It will be appreciated that different connection states may correspond to different charging modes. Specifically, the first detection circuit 10 detects the connection status of the first charging gun 11 and outputs a first detection signal to the controller 50. The second detection circuit 20 simultaneously detects the connection status of multiple second charging guns 21 and outputs a second detection signal to the controller 50. The controller 50 determines the connection status of the first charging gun 11 and the vehicle's charging port based on the first detection signal, and determines the connection status of the multiple second charging guns 21 and the vehicle's charging port based on the second detection signal. The controller 50 then determines the charging mode of the power battery based on the connection status of the first charging gun 11 and the multiple second charging guns 21, and determines the charging parameters based on the charging mode to charge the power battery.

[0049] Charging parameters can be obtained through communication between the charging gun and the controller 50. Specifically, the controller 50 determines the charging mode of the power battery based on the connection status of the first charging gun 11 and the multiple second charging guns 21. Based on the charging mode, it determines the interaction method used between the charging pile corresponding to the first charging gun 11 and the charging piles corresponding to the multiple second charging guns 21. Based on the interaction information, it controls the first charging circuit 30 and the second charging circuit 40 to charge the power battery. During the interaction process, the interaction information is sent in the form of messages. First, the charging pile sends a handshake message and a fast charge message to the vehicle through the charging gun. After receiving these messages, the vehicle replies with a fast charge message to the charging pile. After receiving the fast charge response message and vehicle identification message sent by the vehicle, the corresponding charging pile outputs a corresponding high current according to the current value in the vehicle's message to charge the vehicle. Charging parameters may include parameters of the vehicle's power battery obtained by the controller 50, parameters such as the charging voltage and charging current that the power battery can receive, and may also include charging output voltage and charging output current sent by the charging gun. In addition, the above-mentioned interaction information may also include an alarm signal.

[0050] The charging mode of the power battery can be a single-gun charging mode, a dual-gun charging mode, a triple-gun charging mode, etc. according to the number of charging guns in the connected state. Among them, the controller 50 can determine the number of charging guns successfully connected to the charging interface of the vehicle based on the connection status of the first charging gun 11 and multiple second charging guns 21, thereby controlling the charging mode according to the number and type of charging guns.

[0051] In this embodiment, during the vehicle charging process, the connection status of multiple charging guns can be detected through two detection circuits, so as to determine the number of charging guns currently in a connected state, and charge the power battery based on the charging parameters corresponding to the connection status of the charging guns. Therefore, the system can realize multi-gun fast charging based on the two detection circuits.

[0052] According to some embodiments of the present application, optionally, the vehicle charging system also includes: a first charging interface, the first connection confirmation end of the first charging interface is connected to the first detection circuit 30, and the connection status of the first charging gun 11 is determined by detecting the voltage of the first connection confirmation end by the first detection circuit 10; multiple second charging interfaces, the second connection confirmation end of each second charging interface in the multiple second charging interfaces is connected to the second detection circuit 20 after being connected, and the connection status of the multiple second charging guns 21 is determined by detecting the voltage of the second connection confirmation end by the second detection circuit 20.

[0053] The first charging interface is a charging socket that matches the first charging gun 11, and the second charging interface is a charging socket that matches the second charging gun 21. During the connection process between the vehicle and the charging pile, the first charging gun 11 matches the first charging interface and is connected, and the second charging gun 21 matches the second charging interface and can be connected. The first detection circuit 10 determines whether the first charging interface is connected to the first charging gun 11 based on the current voltage of the first connection confirmation end of the first charging interface to determine the connection status of the first charging gun 11. The second detection circuit 20 determines whether the second charging interface is connected to the second charging gun 21 based on the current voltage of the second connection confirmation end of the second charging interface to determine the connection status of the second charging gun 21.

[0054] As an example, the first detection circuit 10 and the second detection circuit 20 are set in the battery management module (BMS) of the vehicle, referring to Figure 2As shown, the vehicle includes three charging ports: charging port A, charging port B, and charging port C. Charging port A is the first charging port, and charging ports B and C are the second charging ports. That is, the vehicle includes one first charging port and two second charging ports. The charging pile includes a charging gun A that matches charging port A, a charging gun B that matches charging port B, and a charging gun C that matches charging port C. That is, the charging pile is equipped with one first charging gun, namely charging gun A, and two second charging guns, namely charging guns B and C. The first connection confirmation terminal of charging port A is connected to a first detection circuit 10. The first detection circuit 10 determines whether charging gun A is connected to charging port A based on the voltage at the first connection confirmation terminal of charging port A. The second connection confirmation terminals of charging ports B and C are connected to a second detection circuit 20. The second detection circuit 20 determines the connection status of charging guns B and C based on the voltages output in parallel by the second connection confirmation terminals of charging port B and charging port C. The output end of the first detection circuit 10 is connected to a detection input end of the controller. The controller determines whether charging gun A is connected to charging port A based on the output signal of the first detection circuit 10. The output end of the second detection circuit 20 is connected to another detection input end of the controller. The controller determines whether charging gun B is connected to charging port B and charging gun C is connected to charging port C based on the output signal of the second detection circuit 20, or whether one of charging guns B and charging gun C is connected to the corresponding charging port, or whether charging gun B is not connected to charging port B and charging gun C is not connected to charging port C, thereby determining the connection status of multiple second charging guns based on the output signal of the second detection circuit 20.

[0055] In this embodiment, the first detection circuit 10 determines the connection status of the first charging gun 11 based on the voltage of the first connection confirmation end of the first charging interface, and the second detection circuit 20 determines the connection status of the multiple second charging guns 21 based on the output voltage after the second connection confirmation end of each of the multiple second charging interfaces is connected. This allows the detection of the connection status of multiple charging guns based on two detection circuits, reducing application costs.

[0056] According to some embodiments of the present application, optionally, referring to Figure 3 The first detection circuit and the second detection circuit both include: a voltage divider circuit 101, wherein the input end of the voltage divider circuit 101 is connected to the corresponding connection confirmation end, and is used to divide the voltage of the corresponding connection confirmation end to obtain a first voltage V1; a filter circuit 102, wherein the input end of the filter circuit 102 is connected to the output end of the voltage divider circuit 101, and is used to filter the first voltage V1 to obtain a second voltage V2; and a controller 50 is connected to the output end of the filter circuit 102, and is used to determine the connection status of the corresponding charging gun according to the second voltage V2.

[0057] In the first detection circuit 10, the input end of the voltage divider circuit 101 is connected to the first connection confirmation end of the first charging interface. The voltage at the first connection confirmation end is divided to obtain a first voltage V1, which is then filtered by the filter circuit 102 to obtain a second voltage V2. The controller 50 determines the connection status of the first charging gun based on the second voltage V2. In the second detection circuit 20, the input end of the voltage divider circuit 101 is connected to the node after the second connection confirmation end of each second charging interface of the multiple second charging interfaces is connected. The voltage output from this node is divided to obtain a first voltage V1. The first voltage V1 is filtered by the filter circuit 102 to output a second voltage V2. The controller 50 determines the connection status of the multiple second charging guns based on the second voltage V2.

[0058] In this embodiment, the voltage signal is first divided and output by the voltage divider circuit 101 to reduce the detection voltage value of the controller 50, and then the filtering operation based on the filtering circuit 102 is performed to eliminate signal interference and improve detection accuracy.

[0059] According to some embodiments of the present application, optionally, the voltage divider circuit 101 includes: a first resistor R1, wherein the first end of the first resistor R1 is connected to a preset power supply VCC; a second resistor R2, wherein the first end of the second resistor R2 is connected to the second end of the first resistor R1 and forms a first node a, the second end of the second resistor R2 is grounded, and the first node a is connected to a corresponding connection confirmation end; a third resistor R3, wherein the first end of the third resistor R3 is connected to the first node a, and the second end of the third resistor R3 is connected to the input end of the filter circuit 102; and a fourth resistor R4, wherein the first end of the fourth resistor R4 is connected to the second end of the third resistor R3, and the second end of the fourth resistor R4 is grounded.

[0060] The output of the voltage divider circuit 101 is node O, formed by the connection of the first end of the fourth resistor R4 and the second end of the third resistor R3. The voltage divider circuit 101 includes a first-stage voltage divider circuit formed by a first resistor R1 and a second resistor R2, and a second-stage voltage divider circuit formed by a third resistor R3 and a fourth resistor R4. When the connection confirmation terminal is not connected to the charging gun, the first resistor R1 and the second resistor R2 divide the preset power supply VCC, outputting a corresponding first divided voltage from the first node a. The third resistor R3 and the fourth resistor R4 then divide the first divided voltage to obtain a first voltage V1, which is output through node O. When the connection confirmation terminal is connected to the charging gun, the voltage divider circuit changes, affecting the first voltage V1 output at node O. The changed first voltage V1 is filtered to produce a second voltage V2. Based on the changed second voltage V2, the controller 50 can determine that the charging gun is connected to the charging port. The controller 50 can pre-store a valid detection voltage range. When the acquired second voltage V2 is within the valid detection voltage range, the controller determines that the charging gun is connected to the charging port. Otherwise, the controller determines that the charging gun is not connected to the charging port. It is understandable that the effective ranges of the detection voltages corresponding to the first detection circuit 10 and the second detection circuit 20 should be set differently, and no limitation is imposed here.

[0061] When the charging gun is connected to the corresponding charging port, the connection confirmation end of the charging port can be connected to the corresponding electronic component in the charging gun to change the voltage divider resistance or input voltage of the voltage divider circuit 101, thereby changing the first voltage V1 to achieve a change in the output signal of the detection circuit. For example, it can be connected to the ground resistor in the charging gun, or to a preset electrical signal in the charging gun, and no limitation is given here. In addition, the voltage divider circuit 101 can also be set to a single-stage voltage divider, or other multi-stage voltage divider, which can be set specifically according to the performance of the control chip and the detection quality. In addition, the voltage divider circuit 101 can also use a resistor module as the voltage divider resistor, and no limitation is given here.

[0062] In this embodiment, the output voltage value is reduced by performing voltage division through the first resistor R1 , the second resistor R2 , the third resistor R3 and the fourth resistor R4 .

[0063] According to some embodiments of the present application, the filter circuit 102 optionally includes: a fifth resistor R5, wherein a first end of the fifth resistor R5 is connected to the output end of the voltage divider circuit 101, and a second end of the fifth resistor R5 is connected to the controller 50; and a first capacitor C1, wherein a first end of the first capacitor C1 is connected to the second end of the fifth resistor R5, and a second end of the first capacitor C1 is grounded. In other words, the first voltage V1 output from the node O is input to an RC filter formed by the fifth resistor R5 and the first capacitor C1, and the RC filter performs a filtering operation on the first voltage V1 and outputs a second voltage V2 to the controller 50.

[0064] The above-mentioned filtering circuit 102 composed of the fifth resistor R5 and the first capacitor C1 is only one possible implementation method of the present application and can be specifically set according to actual conditions. For example, the filtering circuit 102 can be composed only of filtering capacitors, or can be constructed using other filtering forms to filter out interference signals in the first voltage V1 and ensure detection accuracy.

[0065] According to some embodiments of the present application, optionally, referring to Figure 4 and Figure 5 As shown, the first charging gun 11 and each of the plurality of second charging guns 21 include: a sixth resistor R6, a first end of the sixth resistor R6 is connected to the third connection confirmation end of the corresponding charging gun, and a second end of the sixth resistor R6 is grounded.

[0066] Continue with Figure 2 For example, a vehicle includes charging port A, charging port B, and charging port C, where charging port A is the first charging port, and charging ports B and C are the second charging ports. The charging gun A of the charging pile is connected to charging port A and is the first charging gun 11; charging guns B and charging guns C are connected to charging port B and charging port C, respectively, and serve as two second charging guns 21. Charging guns A, B, and C each have a built-in sixth resistor R6. In charging gun A, the first end of the sixth resistor R6 is connected to the third connection confirmation terminal of the corresponding charging gun, and the other end is grounded. It is understood that when the first charging gun 11 is connected to the first charging port, the third connection confirmation terminal of the first charging gun 11 is connected to the first connection confirmation terminal of the first charging port. When the second charging gun 21 is connected to the second charging port, the third connection confirmation terminal of the second charging gun 21 is connected to the second connection confirmation terminal of the second charging gun.

[0067] Reference Figure 4As shown, when the first charging gun 11, or charging gun A, is connected to the first charging port, or charging port A, the third connection terminal of charging gun A is connected to the first connection confirmation terminal of charging port A. Since the first connection confirmation terminal of charging port A is connected to the first detection circuit, the first end of the sixth resistor R6 is connected to the first node a of the voltage divider circuit 101 in the first detection circuit. At this time, the voltage divider circuit 101 performs a voltage division operation based on the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, and the sixth resistor R6, outputting a corresponding first voltage V1 to the filter circuit 102. The filter circuit 102 filters the first voltage V1 and outputs a second voltage V2 to the controller 50. The controller 50 determines the connection status of charging gun A based on the second voltage V2. When charging gun A is not connected to charging port A, the voltage divider circuit 101 performs a voltage divider based on the first resistor R1, the second resistor R2, the third resistor R3, and the fourth resistor R4, outputting a corresponding first voltage V1 to the filter circuit 102. The filter circuit 102 filters the first voltage V1 and outputs a second voltage V2 to the controller 50. The controller 50 determines that charging gun A is not connected based on the second voltage V2. Thus, the controller 50 can determine the effective range of the first detection voltage corresponding to the first detection circuit 10 based on the parameter settings.

[0068] Reference Figure 5As shown, when charging gun B in the second charging gun 21 is connected to charging port B in the second charging interface, and charging gun C in the second charging gun 21 is connected to charging port C in the second charging interface, the third connection terminal of charging gun B is connected to the second connection confirmation terminal of charging port B, and the third connection terminal of charging gun C is connected to the second connection confirmation terminal of charging port C. Because the second connection confirmation terminal of charging port B is connected to the second connection confirmation terminal of charging port C before being connected to the second detection circuit, the first end of the sixth resistor R6 in charging guns B and charging guns C is connected and then connected to the first node a of the voltage divider circuit 101 in the second detection circuit. At this time, the voltage divider circuit 101 performs a voltage divider operation based on the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, and the two sixth resistors R6, outputting a corresponding first voltage V1 to the filter circuit 102. The filter circuit 102 filters the first voltage V1 and outputs a second voltage V2 to the controller 50. The controller 50 determines the connection status of charging gun A based on the second voltage V2. When charging gun B is not connected to charging port B and charging gun C is connected to charging port C, or when charging gun C is not connected to charging port C and charging gun B is connected to charging port B, the voltage divider circuit 101 performs a voltage divider operation based on the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, and a sixth resistor R6, outputting a corresponding first voltage V1 to the filter circuit 102. The filter circuit 102 filters the first voltage V1 and outputs a second voltage V2 to the controller 50. The controller 50 determines that one of the charging guns B and C is connected based on the voltage value of the second voltage V2. When charging gun B is not connected to charging port B and charging gun C is not connected to charging port C, the voltage divider circuit 101 performs a voltage divider operation based on the first resistor R1, the second resistor R2, the third resistor R3, and the fourth resistor R4, outputting a corresponding first voltage V1 to the filter circuit 102. The filter circuit 102 filters the first voltage V1 and outputs a second voltage V2 to the controller 50. The controller 50 determines that neither charging gun B nor charging gun C is connected based on the voltage value of the second voltage V2. Thus, the controller 50 can determine the number of charging guns B and C that are connected based on the second voltage V2 output by the second detection circuit 20, thereby controlling the second detection circuit. The controller 50 can determine the effective range of the second detection voltage corresponding to the second detection circuit 20 based on parameter settings and determine the connection status of multiple second charging guns 21 based on the second voltage V2 output by the second detection circuit 20.Among them, the two sixth resistors R6 in the charging gun B and the charging gun C are connected in parallel to the second detection circuit 20. The connection resistance of the charging gun B and the charging gun C becomes smaller after being connected in parallel. Therefore, relative to the first detection voltage value obtained by the above-mentioned first detection circuit 10, the second detection voltage value of the second detection circuit 20 is smaller. For example, the first detection voltage obtained by the first detection circuit 10 is 1.1v-1.36v, and the second detection voltage value of the second detection circuit 20 is 0.5v-1.09v.

[0069] This embodiment adjusts the voltage value output by the detection circuit through the sixth resistor R6 built into the charging gun, thereby realizing detection of the connection status of the charging gun.

[0070] According to some embodiments of the present application, optionally, the first charging circuit 30 includes: a first charging switch k1, wherein the first end of the first charging switch k1 is connected to the positive terminal of the power battery, and the second end of the first charging switch k1 is connected to the first charging connection positive terminal of the first charging interface; and a second charging switch k2, wherein the first end of the second charging switch k2 is connected to the negative terminal of the power battery, and the second end of the second charging switch k2 is connected to the first charging connection negative terminal of the first charging interface.

[0071] Reference Figure 2 As shown, the first charging circuit and the second charging circuit are arranged in a measured battery energy distribution unit (BDU).

[0072] When the controller controls the first charging circuit to be turned on, it is necessary to simultaneously control the first charging switch k1 and the second charging circuit k2 to be closed. Figure 2 For example, when charging gun A is connected to charging interface A, the first charging connection positive terminal of charging interface A is connected to the charging connection positive terminal of charging gun A, and the first charging connection negative terminal of charging interface A is connected to the charging connection negative terminal of charging gun A. When the controller 50 controls the first charging switch k1 to be closed, the charging connection positive terminal of charging gun A is connected to the positive terminal of the power battery. When the controller 50 controls the second charging switch k1 to be closed, the charging connection negative terminal of charging gun A is connected to the negative terminal of the power battery. At this time, the first charging circuit is turned on, and charging gun A charges the power battery through the first charging circuit.

[0073] According to some embodiments of the present application, optionally, the second charging circuit 40 includes: a third charging switch k3, wherein the first end of the third charging switch is connected to the positive terminal of the power battery, and the second end of the third charging switch k3 is respectively connected to the second charging connection positive terminal of each second charging interface in the multiple second charging interfaces; and a fourth charging switch k4, wherein the first end of the fourth charging switch is connected to the negative terminal of the power battery, and the second end of the fourth charging switch k4 is respectively connected to the second charging connection negative terminal of each second charging interface in the multiple second charging interfaces.

[0074] When the controller 50 controls the second charging circuit 40 to be turned on, it is necessary to simultaneously control the third charging switch k3 and the fourth charging switch k4 to be closed. At this time, all the second charging interfaces in the vehicle are connected to the power battery through the second charging circuit 40. That is, the controller 50 controls the third charging switch k3 and the fourth charging switch k4 to simultaneously turn on or off multiple charging circuits, so as to enable multiple second charging guns to charge or stop charging the power battery at the same time.

[0075] by Figure 2 For example, a vehicle includes two second charging ports, namely, port B and port C. Correspondingly, the second charging guns are respectively port B and port C. There are two second charging circuits, one corresponding to port B and port C. When charging gun B is connected to port B and charging gun C is connected to port C, the positive charging terminal of port B is connected to the positive charging terminal of charging gun B, and the negative charging terminal of port B is connected to the negative charging terminal of charging gun B. The positive charging terminal of port C is connected to the positive charging terminal of charging gun C, and the negative charging terminal of port C is connected to the negative charging terminal of charging gun C. When the controller 50 controls the third charging switch k3 to close, the positive charging terminals of charging guns B and C are connected to the positive terminal of the power battery. When the controller 50 controls the fourth charging switch k4 to close, the negative charging terminals of charging guns C and B are connected to the negative terminal of the power battery. At this point, the two second charging circuits are connected, and charging guns B and C charge the power battery through the two second charging circuits.

[0076] According to some embodiments of the present application, optionally, when the number of the multiple second charging guns 21 is two, the controller 50 is specifically used to: if the first charging gun 11 is in a connected state and each of the two second charging guns 21 is in a disconnected state, determine that the charging mode is a single-gun charging mode; if the first charging gun 11 is in a disconnected state and each of the two second charging guns 21 is in a connected state, determine that the charging mode is a dual-gun charging mode; if the first charging gun 11 and each of the two second charging guns 21 are in a connected state, determine that the charging mode is a three-gun charging mode.

[0077] by Figure 2 For example, a charging pile includes charging guns A, B, and C, where charging gun A is the first charging gun and charging guns B and C are two second charging guns. A vehicle includes charging ports A, B, and C, where charging port A is the first charging port and charging ports B and C are two second charging ports, corresponding to charging guns B and C, respectively.

[0078] When the controller confirms the connection status of charging gun A based on the first detection circuit, and confirms the connection status of charging guns B and C based on the second detection circuit. When the controller confirms that charging gun A is connected to charging port A, and charging guns B and C are not connected, it determines that the charging mode is single-gun charging mode, controls the first charging circuit to be conductive, and enters charging of gun A. When the controller 50 confirms that charging gun A is not connected, charging gun B is connected to charging port B, and charging gun C is connected to charging port C, it determines that the charging mode is dual-gun charging mode, controls the second charging circuit to be conductive, and enters charging of gun BC. When the controller 50 confirms that charging gun A is connected to charging port A, charging gun B is connected to charging port B, and charging gun C is connected to charging port C, it determines that the charging mode is triple-gun charging mode, controls both the first charging circuit and the second charging circuit to be conductive, and enters charging of guns ABC.

[0079] This embodiment determines the charging mode based on the connection status of the charging guns, thereby charging the vehicle's power battery. This allows for single-, dual-, or triple-charger charging of the vehicle. Furthermore, if the controller 50 determines, based on the second detection circuit, that only charging gun B or charging gun C is connected, it controls the charging circuit to remain disconnected, disabling charging.

[0080] According to some embodiments of the present application, optionally, the controller 50 is also used to: if the charging mode is a single-gun charging mode, interact with the corresponding charging pile by modifying the offset; if the charging mode is a dual-gun charging mode, interact with the corresponding charging pile by modifying the offset; if the charging mode is a three-gun charging mode, interact with the corresponding charging pile by using a complement code method.

[0081] The offset modification method is to increase the amount of data to be transmitted. The complement method is based on the inverse code, adding 1 to the lowest bit, or the sign bit remains unchanged, and the absolute value of the number starts from the rightmost end to the left, and the first bit with the binary code of "1" is found. The bit remains unchanged, and the remaining bits to the left are inverted.

[0082] Specifically, when the controller 50 determines that charging gun A is in a connected state through the first detection circuit 10, and determines that charging gun B and charging gun C are not connected through the second detection circuit 20, it determines to adopt a single-gun charging mode, controls the first charging circuit 30 to be turned on, and at the same time controls the vehicle's battery management module and the charging pile to interact by modifying the offset. The charging of charging gun A is compatible with the national standard charging pile.

[0083] When the controller 50 determines through the first detection circuit 10 that charging gun A is not connected and determines through the second detection circuit 20 that charging guns B and charging guns C are in a connected state, it determines to adopt the dual-gun charging mode, controls the second charging circuit 40 to be turned on, and at the same time controls the vehicle's battery management module and the charging pile to interact by modifying the offset. The charging of charging guns B and charging guns C is compatible with the national standard charging pile.

[0084] When the controller 50 determines through the first detection circuit 10 and the second detection circuit 20 that charging guns A, B and C are all in a connected state, it determines to adopt the three-gun charging mode, controls the first charging circuit 30 and the second charging circuit 40 to be turned on at the same time, and controls the vehicle's battery management module and the charging pile to interact in a complementary code manner, so that the vehicle can be charged with a large current on a specific three-gun charging pile.

[0085] The interactive information may include information such as the total battery capacity, current capacity, and charging current of the vehicle sent by the controller 50, and may also include information such as the charging output current and charging output voltage sent by the charging gun.

[0086] In this embodiment, when the charging mode is a single-gun charging mode or a dual-gun charging mode, the controller 50 interacts with the charging pile corresponding to the first charging gun 11 or the charging pile corresponding to the second charging gun 21 by modifying the offset, so that its single-gun charging mode and dual-gun charging mode can be compatible with the national standard charging pile; when the charging mode is a three-gun mode, the complement method is used to interact with the charging pile corresponding to the first charging gun 11 and the charging pile corresponding to the second charging gun 21, so that the vehicle can be charged with a large current on a specific three-gun charging pile, and at the same time its single-gun and dual-gun charging modes are compatible with national standard pile charging.

[0087] According to some embodiments of the present application, optionally, the maximum charging current of the power battery corresponding to the single-gun charging mode is 200A, the maximum charging current of the power battery corresponding to the dual-gun charging mode is 400A, and the maximum charging current of the power battery corresponding to the triple-gun charging mode is 600A.

[0088] When the controller 50 determines that only charging gun A is connected through the first detection circuit 10, it determines to use the single-gun charging mode, controls the first charging circuit 30 to be conductive, and enters charging gun A for charging, with a maximum charging current of 200A. When the controller 50 determines that only charging guns B and C are connected through the second detection circuit 20, it determines to use the dual-gun charging mode, controls the second charging circuit 40 to be conductive, and enters charging guns B and C for charging, with a maximum charging current of 400A, with each charging circuit sharing 200A of current. When the controller 50 determines that charging guns A, B, and C are all connected through the first detection circuit 10 and the second detection circuit 20, it determines to use the three-gun charging mode, and enters charging guns A, B, and C for charging simultaneously, with a maximum charging current of 600A, with each charging circuit sharing 200A of current.

[0089] For example, when a high current of 600A is charged, Figure 6 In the two-way dual-gun technical solution shown, each charging circuit needs to withstand a charging current of 300A. For the vehicle side and the charging pile side, it is easy to cause the charging interface and the charging gun head to overheat, triggering the over-temperature protection, resulting in charging current limiting. For the battery side, it is easy to cause the high-voltage control relay to overload, reducing the life of the relay. The present application adds a third charging circuit, wherein the third charging circuit and the second charging circuit share the third charging switch k3 and the fourth charging switch k4, and the charging interface C is added to the vehicle side. When performing high-current 600A charging, the dual-gun solution shares 300A current per charging circuit, while the three-gun solution of the present application shares 200A current per charging circuit. In contrast, during high-current charging, the three-gun solution is not prone to overheating of the charging interface and the charging gun head, resulting in charging current limiting, while reducing the load on electronic devices, ensuring the normal use of the devices, and maintaining their service life.

[0090] According to some embodiments of the present application, referring to Figure 7 As shown, vehicle 1000 includes the vehicle charging system 1100 described above.

[0091] According to some embodiments of the present application, referring to Figure 8 As shown, the vehicle charging method may include:

[0092] S801, determining the connection status of multiple charging guns;

[0093] S803: Control multiple charging circuits of the vehicle according to charging parameters corresponding to the connection status to charge the power battery.

[0094] In some embodiments, the vehicle charging method further includes: determining a charging mode of the vehicle's power battery according to the connection status; and interacting with charging piles corresponding to multiple charging guns according to the charging mode.

[0095] In some embodiments, if the charging mode is a single-gun charging mode, the offset modification method is used to interact with the charging pile; if the charging mode is a dual-gun charging mode, the offset modification method is used to interact with the charging pile; if the charging mode is a three-gun charging mode, the complement method is used to interact with the charging pile.

[0096] In some embodiments, the maximum charging current of the power battery corresponding to the single-gun charging mode is 200A, the maximum charging current of the power battery corresponding to the dual-gun charging mode is 400A, and the maximum charging current of the power battery corresponding to the triple-gun charging mode is 600A.

[0097] According to some embodiments of the present application, a computer-readable storage medium stores a program thereon, and when the program is executed by a processor, the above-mentioned vehicle charging method is implemented.

[0098] It should be noted that for the description of the vehicle, method and storage medium, please refer to the description of the system.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A vehicle charging system, characterized in that: The system comprises: A first detection circuit, used to detect the connection status of the first charging gun; A second detection circuit is used to detect the connection status of multiple second charging guns; a first charging circuit, configured to charge the vehicle's power battery via the first charging gun; a plurality of second charging circuits, each of the plurality of second charging circuits corresponding to the plurality of second charging guns, and each second charging circuit being used to charge the power battery through a corresponding charging gun; a controller, configured to determine a connection status of the first charging gun and a connection status of the plurality of second charging guns, and control the first charging circuit and the plurality of second charging circuits according to charging parameters corresponding to the connection statuses to charge the power battery; Wherein, the first detection circuit and the second detection circuit both include: a voltage divider circuit, wherein an input end of the voltage divider circuit is connected to the corresponding connection confirmation end, and is used to divide the voltage of the corresponding connection confirmation end to obtain a first voltage; a filter circuit, wherein an input end of the filter circuit is connected to an output end of the voltage divider circuit, and is configured to filter the first voltage to obtain a second voltage; The controller is connected to the output end of the filter circuit and is used to determine the connection status of the corresponding charging gun according to the second voltage; Wherein, the voltage divider circuit includes: a first resistor, wherein a first end of the first resistor is connected to a preset power supply; a second resistor, wherein a first end of the second resistor is connected to the second end of the first resistor and forms a first node, the second end of the second resistor is grounded, and the first node is connected to the corresponding connection confirmation end; a third resistor, wherein a first end of the third resistor is connected to the first node, and a second end of the third resistor is connected to the input end of the filter circuit; a fourth resistor, wherein a first end of the fourth resistor is connected to the second end of the third resistor, and a second end of the fourth resistor is grounded.

2. The vehicle charging system according to claim 1, characterized in that The system further comprises: a first charging interface, wherein a first connection confirmation end of the first charging interface is connected to the first detection circuit, and the connection status of the first charging gun is determined by detecting a voltage at the first connection confirmation end through the first detection circuit; Multiple second charging interfaces, wherein the second connection confirmation end of each of the multiple second charging interfaces is connected to the second detection circuit after being connected, and the connection status of the multiple second charging guns is determined by detecting the voltage of the second connection confirmation end through the second detection circuit.

3. The vehicle charging system according to claim 1, wherein: The filtering circuit comprises: a fifth resistor, wherein a first end of the fifth resistor is connected to the output end of the voltage divider circuit, and a second end of the fifth resistor is connected to the controller; A first capacitor, wherein a first end of the first capacitor is connected to the second end of the fifth resistor, and a second end of the first capacitor is grounded.

4. The vehicle charging system according to any one of claims 2 to 3, characterized in that: The first charging gun and each of the plurality of second charging guns include: A sixth resistor, wherein a first end of the sixth resistor is connected to the third connection confirmation end of the corresponding charging gun, and a second end of the sixth resistor is grounded.

5. The vehicle charging system according to claim 2, wherein: The first charging circuit includes: a first charging switch, wherein a first end of the first charging switch is connected to the positive terminal of the power battery, and a second end of the first charging switch is connected to the first positive charging connection terminal of the first charging interface; A second charging switch, wherein a first end of the second charging switch is connected to the negative terminal of the power battery, and a second end of the second charging switch is connected to the first charging connection negative terminal of the first charging interface.

6. The vehicle charging system according to claim 2, wherein: The second charging circuit includes: a third charging switch, wherein a first end of the third charging switch is connected to the positive terminal of the power battery, and a second end of the third charging switch is respectively connected to the second positive charging connection terminal of each second charging interface of the plurality of second charging interfaces; a fourth charging switch, wherein a first end of the fourth charging switch is connected to the negative terminal of the power battery, and a second end of the fourth charging switch is respectively connected to the second charging connection negative terminal of each second charging interface of the plurality of second charging interfaces.

7. The vehicle charging system according to claim 1, wherein: When the number of the plurality of second charging guns is two, the controller is further configured to: If the first charging gun is in a connected state and each of the two second charging guns is in a disconnected state, determining that the charging mode is a single-gun charging mode; If the first charging gun is in a disconnected state and each of the two second charging guns is in a connected state, determining that the charging mode is a dual-gun charging mode; If the first charging gun and each of the two second charging guns are in a connected state, it is determined that the charging mode is a three-gun charging mode.

8. The vehicle charging system according to claim 7, characterized in that: The controller is also used to: If the charging mode is the single-gun charging mode, interacting with the charging pile is performed by modifying the offset; If the charging mode is the dual-gun charging mode, interacting with the charging pile is performed by modifying the offset; If the charging mode is the three-gun charging mode, a complement code method is used to interact with the charging pile.

9. The vehicle charging system according to claim 7 or 8, characterized in that: The maximum charging current of the power battery corresponding to the single-gun charging mode is 200A, the maximum charging current of the power battery corresponding to the dual-gun charging mode is 400A, and the maximum charging current of the power battery corresponding to the three-gun charging mode is 600A.

10. A vehicle, characterized in that: The vehicle charging system comprises a vehicle charging system according to any one of claims 1 to 9.

11. A vehicle charging method, characterized in that: The method comprises: Determine the connection status of multiple charging guns; controlling the plurality of charging circuits of the vehicle according to the charging parameters corresponding to the connection state to charge the power battery; determining a charging mode of a power battery of the vehicle according to the connection state; interacting with the charging piles corresponding to the plurality of charging guns according to the charging mode; If the charging mode is a single-gun charging mode, interacting with the charging pile is performed by modifying the offset; If the charging mode is a dual-gun charging mode, interacting with the charging pile is performed by modifying the offset; If the charging mode is a three-gun charging mode, the complement method is used to interact with the charging pile; Among them, the maximum charging current of the power battery corresponding to the single-gun charging mode is 200A, the maximum charging current of the power battery corresponding to the dual-gun charging mode is 400A, and the maximum charging current of the power battery corresponding to the three-gun charging mode is 600A.

12. A computer-readable storage medium, characterized in that A program is stored thereon, and when the program is executed by a processor, the vehicle charging method according to claim 11 is implemented.

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