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

Abstract

The invention discloses a vehicle, a charging system and method thereof and a computer storage medium. The vehicle charging system comprises a plurality of charging interfaces used for connecting a plurality of charging piles; the detection unit is used for detecting the connection state of the plurality of charging interfaces; the communication conversion unit is used for mutually converting the first communication message and the second communication message; the controller is used for communicating with the corresponding charging pile through a first communication message according to the connection state of the plurality of charging interfaces, and / or communicating with the corresponding charging pile through a communication conversion unit so as to obtain corresponding charging information, the communication conversion unit communicates with the controller through a second communication message, and the communication conversion unit communicates with the controller through a third communication message. And the communication conversion unit communicates with the corresponding charging pile through the first communication message.

Description

Vehicle, charging system, charging method and computer storage medium 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 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 the related art, when dual charging piles are used for joint charging, the vehicle is charged after the two charging piles establish communication. This has high hardware requirements and application limitations.

[0004] Summary of the Invention

[0005] In view of the above problems, the present application provides a vehicle and its charging system, charging method and computer storage medium, which can reduce hardware requirements and expand the scope of application.

[0006] In a first aspect, the present application provides a vehicle charging system, which includes: multiple charging interfaces for connecting to multiple charging piles; a detection unit for detecting the connection status of the multiple charging interfaces; a communication conversion unit for converting a first communication message into a second communication message; a controller for communicating with the corresponding charging pile through a first communication message according to the connection status of the multiple charging interfaces, and / or communicating with the corresponding charging pile through the communication conversion unit to obtain corresponding charging information, wherein the communication conversion unit communicates with the controller through the second communication message, and the communication conversion unit communicates with the corresponding charging pile through the first communication message.

[0007] In the technical solution of the embodiment of the present application, multiple charging piles are connected through multiple charging interfaces, the connection status of the multiple charging interfaces is detected by a detection unit, and the first communication message and the second communication message are converted to each other by a communication conversion unit. The controller communicates with the corresponding charging pile through the first communication message according to the connection status of the multiple charging interfaces, and / or communicates with the corresponding charging pile through the communication conversion unit to obtain corresponding charging information, wherein the communication conversion unit and the controller communicate through the second communication message, and the communication conversion unit and the corresponding charging pile communicate through the first communication message. In this way, when the system is performing multi-interface charging, it confirms whether to turn on the communication conversion unit based on the connection status of the charging interface, and converts between the first communication message and the second communication message through the communication conversion unit. Therefore, during the charging process, the vehicle can communicate with the multiple connected charging piles, without the need to establish a communication connection between the charging piles in advance. Multiple independent charging piles can charge the vehicle at the same time, thereby improving the charging efficiency. At the same time, the charging pile operator can meet the vehicle's demand for high-power charging without upgrading the charging pile hardware, reducing hardware requirements and expanding the scope of application.

[0008] In some embodiments, the multiple charging interfaces include a first charging interface and a second charging interface, and the controller is specifically used to: if the first charging interface is in a connected state and the second charging interface is in a non-connected state, communicate with the charging pile connected to the first charging interface through a first communication message; if the first charging interface is in a non-connected state and the second charging interface is in a connected state, communicate with the charging pile connected to the second charging interface through a communication conversion unit; if both the first charging interface and the second charging interface are in a connected state, communicate with the charging pile connected to the first charging interface through the first communication message, and communicate with the charging pile connected to the second charging interface through the communication conversion unit.

[0009] In some embodiments, the controller is also used to: when communicating with the corresponding charging pile through the first communication message, use the first charging control state machine to charge the vehicle based on the corresponding charging information; when communicating with the corresponding charging pile through the communication conversion unit, use the second charging control state machine to charge the vehicle based on the corresponding charging information.

[0010] In some embodiments, the detection unit includes multiple detection circuits corresponding one-to-one to multiple charging interfaces, each detection circuit includes: a voltage divider circuit, the input end of the voltage divider circuit is connected to the first charging connection confirmation end of the corresponding charging interface, and is used to divide the voltage of the first charging 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 interface based on the second voltage.

[0011] 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 a first charging 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.

[0012] 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.

[0013] In some embodiments, each of the plurality of charging piles includes: a sixth resistor, a first end of the sixth resistor is connected to the second charging connection confirmation end of the corresponding charging pile, and a second end of the sixth resistor is grounded.

[0014] In a second aspect, the present application provides a vehicle comprising the above-mentioned vehicle charging system.

[0015] In the technical solution of the embodiment of the present application, the vehicle uses the above-mentioned vehicle charging system. When performing multi-port charging, the communication conversion unit is confirmed to be turned on through the connection status of the charging interface, and the first communication message and the second communication message are converted through the communication conversion unit. Therefore, during the charging process, the vehicle can communicate with multiple connected charging piles. There is no need to establish communication connections between the charging piles in advance. Multiple independent charging piles can charge the vehicle at the same time, which improves the charging efficiency. At the same time, the charging pile operator does not need to upgrade the charging pile hardware to meet the vehicle's demand for high-power charging, which reduces hardware requirements and expands the scope of application.

[0016] In a third aspect, the present application provides a vehicle charging method, the method comprising: obtaining the connection status of multiple charging interfaces of a vehicle; communicating with the corresponding charging pile through a first communication message according to the connection status of the multiple charging interfaces, and / or communicating with the corresponding charging pile through a communication conversion unit to obtain corresponding charging information, wherein the communication conversion unit communicates with the vehicle through a second communication message, and the communication conversion unit communicates with the corresponding charging pile through a first communication message.

[0017] In the technical solution of the embodiment of the present application, the connection status of multiple charging interfaces of the vehicle is obtained, and according to the connection status of the multiple charging interfaces, communication is carried out with the corresponding charging pile through the first communication message, and / or communication is carried out with the corresponding charging pile through the communication conversion unit to obtain corresponding charging information, wherein the communication conversion unit and the vehicle communicate through the second communication message, and the communication conversion unit and the corresponding charging pile communicate through the first communication message. In this way, when performing multi-interface charging, whether to turn on the communication conversion unit is confirmed by the connection status of the charging interface, and the conversion between the first communication message and the second communication message is performed by the communication conversion unit. Therefore, during the charging process, the vehicle can communicate with the multiple connected charging piles, and there is no need to establish a communication connection between the charging piles in advance. Multiple independent charging piles can charge the vehicle at the same time, thereby improving the charging efficiency. At the same time, the charging pile operator does not need to upgrade the charging pile hardware to meet the vehicle's demand for high-power charging, reducing hardware requirements and expanding the scope of application.

[0018] In some embodiments, the multiple charging interfaces include a first charging interface and a second charging interface. According to the connection status of the multiple charging interfaces, communication is performed with the corresponding charging pile through a first communication message, and / or communication is performed with the corresponding charging pile through a communication conversion unit, including: if the first charging interface is in a connected state and the second charging interface is in a non-connected state, communication is performed with the charging pile connected to the first charging interface through the first communication message; if the first charging interface is in a non-connected state and the second charging interface is in a connected state, communication is performed with the charging pile connected to the second charging interface through the communication conversion unit; if both the first charging interface and the second charging interface are in a connected state, communication is performed with the charging pile connected to the first charging interface through the first communication message, and communication is performed with the charging pile connected to the second charging interface through the communication conversion unit.

[0019] In some embodiments, the method further includes: when communicating with the corresponding charging pile through the first communication message, using the first charging control state machine to charge the vehicle based on the corresponding charging information; when communicating with the corresponding charging pile through the communication conversion unit, using the second charging control state machine to charge the vehicle based on the corresponding charging information.

[0020] 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.

[0021] 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, when multi-port charging is performed, the connection status of the charging interface is used to confirm whether the communication conversion unit is turned on, and the first communication message and the second communication message are converted through the communication conversion unit. Therefore, during the charging process, the controller can communicate with the multiple connected charging piles, and there is no need to establish a communication connection between the charging piles in advance. Multiple independent charging piles can charge the vehicle at the same time, thereby improving the charging efficiency. At the same time, the charging pile operator does not need to upgrade the charging pile hardware to meet the vehicle's demand for high-power charging, reducing hardware requirements and expanding the scope of application.

[0022] 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

[0023] 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:

[0024] FIG1 is a block diagram of a vehicle charging system according to some embodiments of the present application;

[0025] FIG2 is a schematic diagram of the architecture of a vehicle charging system according to some embodiments of the present application;

[0026] FIG3 is a schematic diagram of circuit connections of a detection circuit according to some embodiments of the present application;

[0027] FIG4 is a circuit topology diagram of a detection loop according to some embodiments of the present application;

[0028] FIG5 is a block diagram of a vehicle according to some embodiments of the present application;

[0029] FIG6 is a flow chart of a vehicle charging method according to some embodiments of the present application. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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).

[0036] In the related technology, in the dual charging pile joint charging technology solution, including a main charging pile and a slave charging pile, a communication connection is first established between the main charging pile and the slave charging pile, so that when the joint charging is working, the charging gun of the main charging pile and the charging gun of the slave charging pile can charge the vehicle at the same time.

[0037] In the above method, communication must be established between the main charging pile and the slave charging pile in order to realize the simultaneous charging of vehicles by the two piles, which puts additional requirements on the charging pile hardware. The existing charging piles on the market need to be improved before they can be applied to the dual-pile charging technology solution, resulting in limited applicability of this technical solution.

[0038] In order to solve the problem that existing charging piles need to be modified to implement dual charging and joint charging technology solutions, the present application provides a vehicle charging system, which connects multiple charging piles through multiple charging interfaces, detects the connection status of multiple charging interfaces through a detection unit, and converts a first communication message into a second communication message through a communication conversion unit. The controller communicates with the corresponding charging pile through the first communication message according to the connection status of the multiple charging interfaces, and / or communicates with the corresponding charging pile through the communication conversion unit to obtain corresponding charging information, wherein the communication conversion unit communicates with the controller through the second communication message, and the communication conversion unit communicates with the corresponding charging pile through the first communication message. In this way, when the system performs multi-interface charging, it confirms whether to turn on the communication conversion unit based on the connection status of the charging interface, and converts the first communication message into the second communication message through the communication conversion unit. Therefore, during the charging process, the vehicle can communicate with the multiple connected charging piles without establishing communication connections between the charging piles in advance. Multiple independent charging piles can charge the vehicle simultaneously, thereby improving charging efficiency. At the same time, the charging pile operator can meet the vehicle's demand for high-power charging without upgrading the charging pile hardware, reducing hardware requirements and expanding the scope of application.

[0039] According to some embodiments of the present application, referring to FIG. 1 , a vehicle charging system may include: a plurality of charging interfaces 10 , a detection unit 20 , a communication conversion unit 30 , and a controller 40 .

[0040] Among them, multiple charging interfaces 10 are used to connect multiple charging piles 50. The detection unit 20 is used to detect the connection status of multiple charging interfaces 10. The communication conversion unit 30 is used to convert the first communication message into the second communication message. The controller 40 is used to communicate with the corresponding charging pile 50 through the first communication message according to the connection status of the multiple charging interfaces 10, and / or communicate with the corresponding charging pile 50 through the communication conversion unit 30 to obtain corresponding charging information, wherein the communication conversion unit 30 and the controller 40 communicate through the second communication message, and the communication conversion unit 30 and the corresponding charging pile 50 communicate through the first communication message.

[0041] The vehicle is provided with a plurality of charging interfaces 10. When the charging interface 10 is connected to the charging pile 50, the charging pile 50 can perform a charging operation on the power battery in the vehicle. The detection unit 20 detects the connection status of each charging interface 10 and sends a detection signal to the controller 40. The controller 40 determines the connection status of each charging interface 10 based on the received detection signal. When it is determined that the vehicle has a charging interface 10 in a connected state, that is, the charging interface 10 is connected to the charging pile 50, the controller 40 can directly communicate with the charging pile 50 connected to the charging interface 10 through a first communication message, or communicate with the communication conversion unit 30 through a second communication message. The communication conversion unit 30 then converts the second communication message into a first communication message and sends it to the charging pile 50. For the first communication message sent by the charging pile 50, the communication conversion unit 30 receives the first communication message and converts it into a second communication message, and forwards it to the controller 40. Thus, based on the message conversion of the communication conversion unit 30, the communication interaction between the controller 40 and the corresponding charging pile 50 is realized.

[0042] The first communication message can be a national standard charging communication message, and the second communication message is a private communication message. The controller 40 includes two independent sets of external communication messages. One set uses standard international charging communication messages, allowing the controller 40 to communicate directly with the charging station 50; the other set is a private communication message for communication between the controller 40 and the communication conversion unit 30. The communication conversion unit 30 can convert the private communication message into a national standard charging communication message to achieve communication with the corresponding charging station 50.

[0043] Exemplarily, as shown in FIG2 , the controller and the vehicle's power battery are disposed within a battery management system 100 . The vehicle includes two charging interfaces 10 , denoted as charging interface A and charging interface B. Charging interface A is connected to charging pile A of charging piles 50 , and charging interface B is connected to charging pile B of charging piles 50 . When the controller determines that both charging interface A and charging interface B are connected, based on the connection status of charging interface A and charging interface B detected by the detection unit, the controller directly communicates with charging pile A using a standard national standard charging communication message, i.e., a first communication message. The controller then communicates with a communication conversion unit 30 using a private communication message, i.e., a second communication message. The communication conversion unit 30 and charging pile B communicate using international charging standard messages. Thus, the communication conversion unit 30 performs conversion between private communication messages and international charging standard messages, i.e., the controller communicates with charging pile B via the communication conversion unit 30. Through the above method, the controller can communicate with two independent national standard charging piles (charging pile A and charging pile B) at the same time, and dynamically allocate charging requirements according to the capacity and status of each charging pile, so as to achieve efficient charging of the vehicle by the two independent charging piles.

[0044] In the technical solution of the embodiment of the present application, when the system is performing multi-interface charging, the system confirms whether the communication conversion unit is turned on through the connection status of the charging interface. The communication conversion unit can convert between the first communication message and the second communication message. During the charging process, the controller directly communicates with the multiple connected charging piles without the need to establish communication between the charging piles. Multiple independent charging piles can charge the vehicle at the same time, improving the charging efficiency. At the same time, the charging pile operator does not need to upgrade the charging pile hardware to meet the vehicle's demand for high-power charging.

[0045] According to some embodiments of the present application, optionally, the multiple charging interfaces 10 include a first charging interface and a second charging interface, and the controller 40 is specifically used to: if the first charging interface is in a connected state and the second charging interface is in a non-connected state, communicate with the charging pile 50 connected to the first charging interface through a first communication message; if the first charging interface is in a non-connected state and the second charging interface is in a connected state, communicate with the charging pile 50 connected to the second charging interface through a communication conversion unit 30; if both the first charging interface and the second charging interface are in a connected state, communicate with the charging pile 50 connected to the first charging interface through the first communication message, and communicate with the charging pile 50 connected to the second charging interface through the communication conversion unit 30.

[0046] As shown in Figure 2, taking the example of the first charging interface being charging interface A, the second charging interface being charging interface B, the charging pile 50 connected to the first charging interface being charging pile A, and the charging pile 50 connected to the second charging interface being charging pile B, when the controller determines that charging interface A is connected to charging pile A and charging interface B is not connected to charging pile B, the controller communicates with charging pile A via a first message. When the controller determines that charging interface A is not connected to charging pile A and charging interface B is connected to charging pile B, the controller communicates with communication conversion unit 30 via a second communication message, and communication conversion unit 30 and charging pile B communicate via the first communication message. Thus, conversion between the first and second communication messages is achieved through communication conversion unit 30, thereby enabling interaction between the controller and charging pile B. When the controller determines that charging interface A is connected to charging pile A, and charging interface B is connected to charging pile B, the controller uses the first communication message to communicate directly with charging pile A, and uses the second communication message to communicate with the communication conversion unit 30. The communication conversion unit 30 and charging pile B use the first communication message to communicate. Therefore, the controller realizes communication with charging pile B based on the conversion function of the communication conversion unit 30 on the first communication message and the second communication message. As a result, the controller can simultaneously realize communication with charging pile A and charging pile B, thereby realizing dual charging pile joint charging.

[0047] Through the above method, the controller 40 can communicate with two independent national standard charging piles at the same time, and dynamically allocate charging requirements according to the capacity and status of each charging pile, so as to realize efficient charging of the vehicle by the two independent charging piles.

[0048] According to some embodiments of the present application, optionally, the controller 40 is also used to: charge the vehicle using a first charging control state machine based on the corresponding charging information when communicating with the corresponding charging pile 50 through a first communication message; and charge the vehicle using a second charging control state machine based on the corresponding charging information when communicating with the corresponding charging pile 50 through a communication conversion unit 30.

[0049] Two independent charging state machines are installed inside the vehicle. For charging piles 50 with which the controller 40 communicates directly via the first communication message, the first charging control state machine is used to charge the vehicle. For charging piles 50 with which the controller 40 communicates based on the communication conversion unit 30, the controller 40 uses the second charging control state machine to charge the vehicle.

[0050] For example, using Figure 2 as an example, when the controller determines that charging port A is connected to charging pile A and charging port B is not connected to charging pile B, the controller communicates with charging pile A via a first message and simultaneously uses a first charging state controller to cause charging pile A to charge the vehicle, thereby performing single-pile charging. When the controller determines that charging port A is not connected to charging pile A and charging port B is connected to charging pile B, the controller communicates with communication conversion unit 30 via a second communication message. Communication conversion unit 30 communicates with charging pile B via the first communication message, thereby converting the first communication message to the second communication message through communication conversion unit 30. Simultaneously, the controller uses a second charging state controller to cause charging pile B to charge the vehicle, thereby performing single-pile charging. When the controller determines that charging interface A is connected to charging pile A and charging interface B is connected to charging pile B, the controller uses the first communication message to communicate directly with charging pile A, communicates with charging pile B through the communication conversion unit 30, and uses the first charging state controller to control the charging process between charging pile A and the vehicle, and uses the second charging state controller to control the charging process between charging pile B and the vehicle, thereby realizing dual-pile charging.

[0051] In this embodiment, the first charging control state machine is used for the charging pile 50 that communicates directly through the first communication message; the second charging control state machine is used for the charging pile 50 that communicates through the communication conversion unit 30, so that two independent state machines can realize separate charging control of two independent charging piles 50.

[0052] According to some embodiments of the present application, optionally, with reference to Figures 3 and 4, the detection unit 20 includes multiple detection circuits 21 corresponding one-to-one to multiple charging interfaces 10, and each detection circuit 21 includes: a voltage divider circuit 201, wherein the input end of the voltage divider circuit 201 is connected to the first charging connection confirmation end 11 of the corresponding charging interface 10, and is used to divide the voltage of the first charging connection confirmation end 11 to obtain a first voltage V1; a filter circuit 202, wherein the input end of the filter circuit 202 is connected to the output end of the voltage divider circuit 201, and is used to filter the first voltage V1 to obtain a second voltage V2; and the controller 40 is connected to the output end of the filter circuit 201, and is used to determine the connection status of the corresponding charging interface 10 according to the second voltage V2.

[0053] The detection circuits 21 in the detection unit 20 are respectively connected to the corresponding charging interfaces 10. One detection circuit 21 is responsible for detecting the connection status of one charging interface 10, thereby detecting the connection status of each charging interface 10 in the vehicle, and feeding back the connection status of the corresponding charging interface 10 to the controller 40. The controller 40 determines the communication mode and the corresponding charging mode according to the connection status of each charging interface 10.

[0054] As an example, referring to FIG2 , a vehicle includes two charging ports 10, namely, charging port A and charging port B. The detection unit 20 includes two detection circuits 21, namely, detection circuit A and detection circuit B. Two charging piles 50, respectively, are connected to detection circuit A, which matches charging port A, and detection circuit B, which matches charging port B. The first connection confirmation terminal of charging port A is connected to detection circuit A. Detection circuit A determines whether charging pile A is connected to charging port A based on the voltage at the first charging connection confirmation terminal of charging port A. The first charging connection confirmation terminal of charging port B is connected to detection circuit B. Detection circuit B determines whether charging pile B is connected to charging port B based on the voltage at the first charging connection confirmation terminal of charging port B. The output of detection circuit A is connected to a detection input of a controller. The controller determines whether charging pile A is connected to charging port A based on the output signal of detection circuit A. The output of detection circuit B is connected to another detection input of the controller. The controller determines whether charging pile B is connected to charging port B based on the output signal of detection circuit B.

[0055] In the detection circuit 21, the input end of the voltage divider circuit 201 is connected to the first charging connection confirmation end 11 of the charging interface 10, and the voltage of the first charging connection confirmation end 11 is divided to obtain a first voltage V1, which is filtered by the filter circuit 202 to obtain a second voltage V2. The filtered second voltage V2 is sent to the controller 40, and the controller 40 determines the connection status of the corresponding charging interface 10 based on the second voltage V2.

[0056] In this embodiment, the voltage signal is first divided and output by the voltage divider circuit 201 to reduce the voltage value of the input controller, and then the filtering circuit 202 performs a filtering operation to eliminate signal interference and improve detection accuracy.

[0057] According to some embodiments of the present application, optionally, the voltage divider circuit 201 includes: a first resistor R1, wherein a first end of the first resistor R1 is connected to a preset power supply VCC; a second resistor R2, wherein a first end of the second resistor R2 is connected to a second end of the first resistor R1 and forms a first node a, a second end of the second resistor R2 is grounded, and the first node a is connected to a first charging connection confirmation terminal 11; a third resistor R3, wherein a first end of the third resistor R3 is connected to the first node a, and a second end of the third resistor R3 is connected to an input end of the filter circuit 202; and a fourth resistor R4, wherein a first end of the fourth resistor R4 is connected to a second end of the third resistor R3, and a second end of the fourth resistor R4 is grounded.

[0058] The output of the voltage divider circuit 201 is node O, formed by connecting the first end of the fourth resistor R4 and the second end of the third resistor R3. The voltage divider circuit 201 includes a first-stage voltage divider resistor consisting of a first resistor R1 and a second resistor R2, and a second-stage voltage divider circuit consisting of 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 first divided voltage is then divided by the third resistor R3 and the fourth resistor R4 to obtain a first voltage V1, which is output through node O. When the first charging connection confirmation terminal 11 of the charging interface 10 is connected to the charging station 50, the voltage divider circuit changes, thereby affecting the first voltage V1 output at node O. The changed first voltage V1 is filtered to output a second voltage V2, which is then input to the controller 40. The controller 40 can then determine whether the charging interface 10 is connected to the charging station 50 based on the changed second voltage V2. The controller 40 may pre-store a valid range of detection voltages. When the acquired second voltage V2 is within the valid range of detection voltages, it is determined that the corresponding charging interface 10 is connected to the charging pile 50 . Otherwise, it is considered that the charging interface 10 is not connected to the charging pile 50 .

[0059] When the charging interface 10 is connected to the charging pile 50, the connection confirmation terminal of the charging interface 10 can be connected to the corresponding electronic components in the charging pile 50 to change the voltage divider resistance or input voltage of the voltage divider circuit 201, thereby changing the first voltage V1 to achieve a change in the output signal of the detection circuit 21. For example, it can be connected to the grounding resistor in the charging pile 50, or to a preset electrical signal in the charging pile 50, which is not limited here. In addition, the voltage divider circuit 201 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 201 can also use a resistor module as the voltage divider resistance, which is not limited here.

[0060] 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 .

[0061] According to some embodiments of the present application, the filter circuit 202 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 201, and a second end of the fifth resistor R5 is connected to the controller 40; 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 40.

[0062] The above-mentioned filtering circuit 202 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 202 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.

[0063] According to some embodiments of the present application, optionally, each charging pile 50 of the multiple charging piles 50 includes: a sixth resistor R6, a first end of the sixth resistor R6 is connected to the second charging connection confirmation end 51 of the corresponding charging pile 50, and a second end of the sixth resistor R6 is grounded.

[0064] Continuing with Figure 2 as an example, the charging interface 10 in the vehicle includes a charging interface A and a charging interface B. Charging pile A in the charging pile 50 is connected to charging interface A, and charging pile B is connected to charging interface B. Charging pile A and charging pile B each have a built-in sixth resistor R6. In the charging pile 50, a first end of the sixth resistor R6 is connected to the second charging connection confirmation terminal 51 of the corresponding charging pile 50, and the other end is grounded. It is understood that when charging pile A is connected to charging interface A, the second charging connection confirmation terminal 51 of charging pile A is connected to the first charging connection confirmation terminal 11 of charging interface A. When charging pile B is connected to charging interface B, the second charging connection confirmation terminal 51 of charging pile B is connected to the first charging connection confirmation terminal 11 of charging interface B.

[0065] As shown in Figure 4 , when the charging pile 50 is connected to the charging interface 10, the second charging connection confirmation terminal 51 of the charging pile 50 is connected to the first charging connection confirmation terminal 11 of the charging interface 10. Since the first charging connection confirmation terminal 11 of the charging interface 10 is connected to the detection circuit 21, the first end of the sixth resistor R6 is connected to the first node a of the voltage divider circuit 201 in the detection circuit 21. At this time, the voltage divider circuit 201 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, and outputs a corresponding first voltage V1 to the filter circuit 202. The filter circuit 202 filters the first voltage V1 and outputs a second voltage V2 to the controller 40. The controller 40 determines the connection status of the charging interface 10 based on the second voltage V2. When the charging pile 50 is not connected to the charging interface 10, the voltage divider circuit 201 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 202. The filter circuit 202 filters the first voltage V1 and outputs a second voltage V2 to the controller 40. The controller 40 determines that the charging interface 10 is not connected based on the second voltage V2. Therefore, the controller 40 can determine the effective range of the detection voltage corresponding to the detection circuit 21 based on the parameter settings.

[0066] This embodiment adjusts the voltage value output by the detection circuit 21 through the sixth resistor R built into the charging pile 50, thereby detecting the connection status of the charging interface 10. This solution is low-cost and easy to implement.

[0067] After the vehicle's charging system is activated, the controller 40 detects the current connection status of the charging interface 10. Based on the connection status of each charging interface 10, it determines the number of charging interfaces 10 connected to the charging piles 50 and the number of charging interfaces 10 connected to the charging piles 50, thereby determining the number of charging piles currently integrated into the battery system's charging circuit. The controller 40 initiates different charging control processes based on the detected charging pile integration status.

[0068] Specifically, as shown in Figure 2, if the current controller determines through the charging interface check that only single-pile charging is currently being performed (only charging interface A is connected, or only charging interface B is connected), the system starts the single-pile charging process; if the current controller determines through the charging interface check that dual-pile charging is being performed (charging interface A is connected, and charging interface B is connected), the system starts the dual-pile charging process, that is, using the first communication message to directly communicate with charging pile A, and communicating with charging pile B through the communication conversion unit 30, while using the first charging state controller to control the charging process between charging pile A and the vehicle, and using the second charging state controller to control the charging process between charging pile B and the vehicle, thereby realizing dual-pile charging.

[0069] In addition, if a second charging pile is detected to be incorporated into the charging system during single-pile charging, the system can simultaneously start the charging process of the second charging pile when charging of the single pile has already started. For example, assuming that the current single-pile charging process is that charging pile A is charging the vehicle, that is, the controller communicates with charging pile A through a first message and uses the first charging state controller to charge the vehicle. During the process of charging pile A charging the vehicle, the controller determines that charging interface B is connected to charging pile B based on the voltage of the first charging connection end of charging interface B. The controller then establishes communication with charging pile B through the communication conversion unit 30 and uses the second charging state controller to enable charging pile B to charge the vehicle. At this time, charging piles A and B perform dual-pile charging of the vehicle.

[0070] According to some embodiments of the present application, referring to FIG. 5 , a vehicle 1000 includes the aforementioned vehicle charging system 1100 .

[0071] According to some embodiments of the present application, referring to FIG6 , a vehicle charging method may include:

[0072] S601, obtaining the connection status of multiple charging ports of the vehicle;

[0073] S603, according to the connection status of multiple charging interfaces, communicate with the corresponding charging pile through a first communication message, and / or communicate with the corresponding charging pile through a communication conversion unit to obtain corresponding charging information, wherein the communication conversion unit communicates with the vehicle through a second communication message, and the communication conversion unit communicates with the corresponding charging pile through a first communication message.

[0074] In some embodiments, the multiple charging interfaces include a first charging interface and a second charging interface. According to the connection status of the multiple charging interfaces, communication is performed with the corresponding charging pile through a first communication message, and / or communication is performed with the corresponding charging pile through a communication conversion unit, including: if the first charging interface is in a connected state and the second charging interface is in a non-connected state, communication is performed with the charging pile connected to the first charging interface through the first communication message; if the first charging interface is in a non-connected state and the second charging interface is in a connected state, communication is performed with the charging pile connected to the second charging interface through the communication conversion unit; if both the first charging interface and the second charging interface are in a connected state, communication is performed with the charging pile connected to the first charging interface through the first communication message, and communication is performed with the charging pile connected to the second charging interface through the communication conversion unit.

[0075] In some embodiments, the method further includes: when communicating with the corresponding charging pile through the first communication message, using the first charging control state machine to charge the vehicle based on the corresponding charging information; when communicating with the corresponding charging pile through the communication conversion unit, using the second charging control state machine to charge the vehicle based on the corresponding charging information.

[0076] 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.

[0077] It should be noted that for the description of the vehicle, method and storage medium, please refer to the description of the system.

[0078] 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: Multiple charging ports for connecting to multiple charging piles; a detection unit, configured to detect the connection status of the plurality of charging interfaces; A communication conversion unit, configured to convert the first communication message into the second communication message; A controller is configured to communicate with the corresponding charging pile through the first communication message and / or communicate with the corresponding charging pile through the communication conversion unit to obtain corresponding charging information based on the connection status of the multiple charging interfaces, wherein the communication conversion unit communicates with the controller through the second communication message, and the communication conversion unit communicates with the corresponding charging pile through the first communication message.

2. The vehicle charging system according to claim 1, characterized in that The multiple charging interfaces include a first charging interface and a second charging interface, and the controller is specifically configured to: If the first charging interface is in a connected state and the second charging interface is in a disconnected state, communicating with the charging pile connected to the first charging interface through the first communication message; If the first charging interface is in a disconnected state and the second charging interface is in a connected state, communicating with the charging pile connected to the second charging interface through the communication conversion unit; If the first charging interface and the second charging interface are both in a connected state, communication is performed with the charging pile connected to the first charging interface through the first communication message, and communication is performed with the charging pile connected to the second charging interface through the communication conversion unit.

3. The vehicle charging system according to claim 1 or 2, characterized in that: The controller is also used for: When communicating with the corresponding charging pile through the first communication message, charging the vehicle using a first charging control state machine based on the corresponding charging information; When communicating with the corresponding charging pile through the communication conversion unit, the vehicle is charged using a second charging control state machine based on the corresponding charging information.

4. The vehicle charging system according to claim 1, wherein: The detection unit includes a plurality of detection circuits corresponding one-to-one to the plurality of charging interfaces, and each detection circuit includes: a voltage divider circuit, wherein an input end of the voltage divider circuit is connected to a first charging connection confirmation end of a corresponding charging interface, and is configured to divide a voltage at the first charging 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 interface according to the second voltage.

5. The vehicle charging system according to claim 4, characterized in that: The voltage divider circuit comprises: 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 first charging connection confirmation end; A third resistor, 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 first node. 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.

6. The vehicle charging system according to claim 4, characterized in that 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.

7. The vehicle charging system according to any one of claims 4 to 6, characterized in that: Each of the plurality of charging piles comprises: A sixth resistor, wherein a first end of the sixth resistor is connected to the second charging connection confirmation end of the corresponding charging pile, and a second end of the sixth resistor is grounded.

8. A vehicle, characterized in that: The vehicle charging system comprises a vehicle charging system according to any one of claims 1 to 7.

9. A vehicle charging method, characterized in that: The method comprises: Get the connection status of multiple charging ports of the vehicle; According to the connection status of the multiple charging interfaces, communication is performed with the corresponding charging pile via a first communication message, and / or communication is performed with the corresponding charging pile via a communication conversion unit to obtain corresponding charging information, wherein the communication conversion unit communicates with the vehicle via a second communication message, and the communication conversion unit communicates with the corresponding charging pile via the first communication message.

10. The vehicle charging method according to claim 9, characterized in that: The multiple charging interfaces include a first charging interface and a second charging interface, and the communicating with the corresponding charging pile through the first communication message and / or communicating with the corresponding charging pile through the communication conversion unit according to the connection status of the multiple charging interfaces includes: If the first charging interface is in a connected state and the second charging interface is in a disconnected state, communicating with the charging pile connected to the first charging interface through the first communication message; If the first charging interface is in a disconnected state and the second charging interface is in a connected state, communicating with the charging pile connected to the second charging interface through the communication conversion unit; If the first charging interface and the second charging interface are both in a connected state, communication is performed with the charging pile connected to the first charging interface through the first communication message, and communication is performed with the charging pile connected to the second charging interface through the communication conversion unit.

11. The vehicle charging method according to claim 9 or 10, characterized in that: The method further comprises: When communicating with the corresponding charging pile through the first communication message, charging the vehicle using a first charging control state machine based on the corresponding charging information; When communicating with the corresponding charging pile through the communication conversion unit, the vehicle is charged using a second charging control state machine based on the corresponding charging information.

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 any one of claims 9 to 11 is implemented.

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