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

Abstract

The application discloses a vehicle and a charging system, a charging method and a computer storage medium thereof. The vehicle charging system comprises a plurality of charging interfaces for connecting a plurality of charging piles; a detection unit for detecting the connection state of the plurality of charging interfaces; a communication conversion unit for mutual conversion between a first communication message and a second communication message; and a controller for communicating with the corresponding charging pile through the first communication message according to the connection state of the plurality of charging interfaces, and / or communicating with the corresponding charging pile through the communication conversion unit to obtain the 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.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, specifically to a vehicle and its charging system, charging method, and computer storage medium. Background Technology

[0002] Electric vehicles are environmentally friendly modes of transportation, equipped with batteries that provide power for their operation. When the battery is low, it can be charged using charging stations.

[0003] In related technologies, when charging two charging piles together, the two charging piles need to establish communication before charging the vehicle. This has high hardware requirements and limited application. Summary of the Invention

[0004] In view of the above problems, this 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.

[0005] In a first aspect, this application provides a vehicle charging system, the system comprising: multiple charging interfaces for connecting multiple charging piles; a detection unit for detecting the connection status of the multiple charging interfaces; a communication conversion unit for converting between a first communication message and a second communication message; and a controller for communicating with the corresponding charging piles via the first communication message and / or communicating with the corresponding charging piles via the communication conversion unit, based on the connection status of the multiple charging interfaces, to obtain corresponding charging information, wherein the communication conversion unit communicates with the controller via the second communication message, and the communication conversion unit communicates with the corresponding charging piles via the first communication message.

[0006] In the technical solution of this application embodiment, multiple charging interfaces are connected to multiple charging piles. A detection unit detects the connection status of the multiple charging interfaces, and a communication conversion unit performs mutual conversion between a first communication message and a second communication message. The controller communicates with the corresponding charging pile via the first communication message and / or via the communication conversion unit, based on the connection status of the multiple charging interfaces, to obtain the corresponding charging information. The communication conversion unit communicates with the controller via the second communication message, and with the corresponding charging pile via the first communication message. Thus, when the system performs multi-interface charging, it determines whether to activate the communication conversion unit based on the connection status of the charging interfaces and performs the conversion between the first and second communication messages. Therefore, during charging, the vehicle can communicate with multiple connected charging piles without prior communication connections between the charging piles. Multiple independent charging piles can simultaneously charge the vehicle, improving charging efficiency. Furthermore, charging pile operators do not need to upgrade the charging pile hardware to meet the vehicle's high-power charging needs, reducing hardware requirements and expanding the scope of application.

[0007] In some embodiments, the plurality of charging interfaces include a first charging interface and a second charging interface. 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, communicate with the charging pile connected to the first charging interface through a first communication message; if the first charging interface is in a disconnected 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 a first communication message, and communicate with the charging pile connected to the second charging interface through a communication conversion unit.

[0008] In some embodiments, the controller is further configured to: charge the vehicle using a first charging control state machine based on the corresponding charging information when communicating with the corresponding charging pile via 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 via a communication conversion unit.

[0009] In some embodiments, the detection unit includes multiple detection loops corresponding one-to-one with multiple charging interfaces. Each detection loop includes: a voltage divider circuit, the input terminal of which is connected to the first charging connection confirmation terminal of the corresponding charging interface, for dividing the voltage of the first charging connection confirmation terminal to obtain a first voltage; a filter circuit, the input terminal of which is connected to the output terminal of the voltage divider circuit, for filtering the first voltage to obtain a second voltage; and a controller connected to the output terminal of the filter circuit, for determining the connection status of the corresponding charging interface based on the second voltage.

[0010] In some embodiments, the voltage divider circuit includes: a first resistor, the first end of which is connected to a preset power supply; a second resistor, the first end of which is connected to the second end of the first resistor to form a first node, the second end of which is grounded, and the first node is connected to a first charging connection confirmation terminal; a third resistor, the first end of which is connected to the first node, and the second end of which is connected to the input terminal of a filter circuit; and a fourth resistor, the first end of which is connected to the second end of the third resistor, and the second end of which is grounded.

[0011] In some embodiments, the filter circuit includes: a fifth resistor, the first end of which is connected to the output terminal of the voltage divider circuit, and the second end of which is connected to the controller; and a first capacitor, the first end of which is connected to the second end of the fifth resistor, and the second end of which is grounded.

[0012] In some embodiments, each of the plurality of charging piles includes a sixth resistor, the first end of which is connected to the second charging connection confirmation terminal of the corresponding charging pile, and the second end of which is grounded.

[0013] Secondly, this application provides a vehicle including the aforementioned vehicle charging system.

[0014] In the technical solution of this application embodiment, when the vehicle is charging through multiple interfaces using the aforementioned vehicle charging system, the connection status of the charging interface is used to determine whether the communication conversion unit is activated. The communication conversion unit performs the conversion between the first communication message and the second communication message. Thus, during the charging process, the vehicle can communicate with 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 simultaneously, improving charging efficiency. At the same time, charging pile operators do 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.

[0015] Thirdly, this application provides a vehicle charging method, the method comprising: acquiring the connection status of multiple charging interfaces of the vehicle; communicating with a corresponding charging pile via a first communication message according to the connection status of the multiple charging interfaces, and / or communicating 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 a first communication message.

[0016] In the technical solution of this application embodiment, the connection status of multiple charging ports of the vehicle is obtained, and based on the connection status of the multiple charging ports, communication is established with the corresponding charging pile via a first communication message, and / or with the corresponding charging pile via a communication conversion unit to obtain the corresponding charging information. The communication conversion unit communicates with the vehicle via a second communication message, and with the corresponding charging pile via the first communication message. Thus, when charging multiple ports, the connection status of the charging ports determines whether the communication conversion unit should be activated, and the communication conversion unit performs the conversion between the first and second communication messages. Therefore, during the charging process, the vehicle can communicate with multiple connected charging piles without prior communication between the charging piles. Multiple independent charging piles can simultaneously charge the vehicle, improving charging efficiency. Furthermore, charging pile operators do not need to upgrade the charging pile hardware to meet the vehicle's high-power charging needs, reducing hardware requirements and expanding the scope of application.

[0017] In some embodiments, the plurality of charging interfaces include a first charging interface and a second charging interface. Depending on the connection status of the plurality of charging interfaces, communication is established with the corresponding charging pile via a first communication message, and / or via a communication conversion unit. This includes: if the first charging interface is in a connected state and the second charging interface is in a disconnected state, then communication is established with the charging pile connected to the first charging interface via a first communication message; if the first charging interface is in a disconnected state and the second charging interface is in a connected state, then communication is established with the charging pile connected to the second charging interface via a communication conversion unit; if both the first and second charging interfaces are in a connected state, then communication is established with the charging pile connected to the first charging interface via a first communication message, and also with the charging pile connected to the second charging interface via a communication conversion unit.

[0018] In some embodiments, the method further includes: when communicating with the corresponding charging pile via a first communication message, charging the vehicle using a first charging control state machine based on the corresponding charging information; and when communicating with the corresponding charging pile via a communication conversion unit, charging the vehicle using a second charging control state machine based on the corresponding charging information.

[0019] Fourthly, this application provides a computer-readable storage medium having a program stored thereon that, when executed by a processor, implements the above-described vehicle charging method.

[0020] In the technical solution of this application embodiment, when the computer-readable storage medium executes the program, the aforementioned vehicle charging method, during multi-interface charging, determines whether to activate the communication conversion unit based on the connection status of the charging interface, and performs conversion between the first communication message and the second communication message through the communication conversion unit. Thus, during the charging process, the controller can communicate with 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 simultaneously, improving charging efficiency. At the same time, charging pile operators do 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.

[0021] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0023] Figure 1 This is a block diagram of a vehicle charging system according to some embodiments of this application;

[0024] Figure 2 This is a schematic diagram of the architecture of a vehicle charging system according to some embodiments of this application;

[0025] Figure 3 This is a schematic diagram of the circuit connection of the detection loop in some embodiments of this application;

[0026] Figure 4 This is a circuit topology diagram of the detection loop in some embodiments of this application;

[0027] Figure 5 A block diagram of a vehicle according to some embodiments of this application;

[0028] Figure 6 A flowchart illustrating a vehicle charging method according to some embodiments of this application. Detailed Implementation

[0029] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0031] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0032] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0033] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0034] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0035] In related technologies, the dual-charging-pile joint charging technology solution includes a main charging pile and a slave charging pile. The main charging pile and the slave charging pile first establish a communication connection so that the charging guns of the main charging pile and the slave charging pile can charge the vehicle simultaneously during joint charging.

[0036] The above method requires communication between the main charging pile and the secondary charging pile to enable simultaneous charging of vehicles by both piles, which places additional demands on the charging pile hardware. Existing charging piles on the market need to be improved to be applicable to the dual-pile charging technology solution, thus limiting the applicability of this technology solution.

[0037] To address the issue that existing charging piles require modifications to implement dual-charging solutions, this application provides a vehicle charging system. This system connects multiple charging piles to multiple charging interfaces. A detection unit monitors the connection status of the charging interfaces, and a communication conversion unit converts between first and second communication messages. The controller communicates with the corresponding charging piles via the first communication message and / or via the communication conversion unit, based on the connection status of the charging interfaces, to obtain relevant charging information. The communication conversion unit communicates with the controller via the second communication message and with the corresponding charging pile via the first communication message. Thus, when charging through multiple interfaces, the system determines whether to activate the communication conversion unit based on the connection status of the charging interfaces and converts between the first and second communication messages. This allows the vehicle to communicate with multiple connected charging piles during charging without prior communication connections between the charging piles. Multiple independent charging piles can charge the vehicle simultaneously, improving charging efficiency. Furthermore, charging pile operators can meet the high-power charging needs of vehicles without upgrading the charging pile hardware, reducing hardware requirements and expanding the applicability.

[0038] According to some embodiments of this application, refer to Figure 1 The vehicle charging system may include: multiple charging interfaces 10, a detection unit 20, a communication conversion unit 30, and a controller 40.

[0039] The system includes multiple charging interfaces 10 for connecting to multiple charging piles 50. A detection unit 20 detects the connection status of the multiple charging interfaces 10. A communication conversion unit 30 performs mutual conversion between a first communication message and a second communication message. A controller 40 communicates with the corresponding charging pile 50 via a first communication message, and / or via the communication conversion unit 30, based on the connection status of the multiple charging interfaces 10, to obtain corresponding charging information. The communication conversion unit 30 communicates with the controller 40 via a second communication message, and communicates with the corresponding charging pile 50 via a first communication message.

[0040] The vehicle is equipped with multiple charging ports 10. When a charging port 10 is connected to a charging pile 50, the charging pile 50 can charge the vehicle's power battery. The detection unit 20 detects the connection status of each charging port 10 and sends the detection signal to the controller 40. The controller 40 determines the connection status of each charging port 10 based on the received detection signal. When it is determined that there is a charging port 10 in a connected state, i.e., the charging port 10 is connected to the charging pile 50, the controller 40 can communicate directly with the charging pile 50 connected to the charging port 10 via a first communication message, or it can communicate with the communication conversion unit 30 via 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, converts it into a second communication message, and forwards it to the controller 40. Thus, based on the message conversion by the communication conversion unit 30, the controller 40 achieves communication interaction with the corresponding charging pile 50.

[0041] The first communication message can be a national standard charging communication message, and the second communication message is a proprietary communication message. The controller 40 includes two independent sets of external communication messages. One set uses a standard international charging communication message, which allows the controller 40 to communicate directly with the charging pile 50. The other set is a proprietary communication message, used for communication between the controller 40 and the communication conversion unit 30. The communication conversion unit 30 can convert the proprietary communication message into a national standard charging communication message to enable communication with the corresponding charging pile 50.

[0042] For example, such as Figure 2 As shown, the controller and the vehicle's power battery are housed within the battery management system 100. The vehicle includes two charging interfaces 10, denoted as charging interface A and charging interface B, respectively. Charging interface A is connected to charging pile A in the charging pile 50, and charging interface B is connected to charging pile B in the charging pile 50. When the controller determines that both charging interfaces A and B are connected based on the connection status detected by the detection unit, the controller uses the standard national standard charging communication message (i.e., the first communication message) to communicate directly with charging pile A; and uses a private communication message (i.e., the second communication message) to communicate with the communication conversion unit 30. The communication conversion unit 30 communicates with charging pile B using the international charging standard message, thereby achieving the conversion between the private communication message and the international charging standard message through the communication conversion unit 30. In other words, the controller communicates with charging pile B through the communication conversion unit 30. Through the above methods, the controller can communicate with two independent national standard charging piles (charging pile A and charging pile B) simultaneously, and dynamically allocate charging needs 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.

[0043] In the technical solution of this application embodiment, when the system is charging through multiple interfaces, it determines whether to activate the communication conversion unit by 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 communicates directly with multiple connected charging piles without the need to establish communication between the charging piles. Multiple independent charging piles can charge the vehicle simultaneously, 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.

[0044] According to some embodiments of this application, optionally, the plurality of charging interfaces 10 include a first charging interface and a second charging interface. The controller 40 is specifically configured to: if the first charging interface is in a connected state and the second charging interface is in a disconnected state, then 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 disconnected state and the second charging interface is in a connected state, then 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, then communicate with the charging pile 50 connected to the first charging interface through a first communication message, and also communicate with the charging pile 50 connected to the second charging interface through the communication conversion unit 30.

[0045] Reference Figure 2 As shown, taking the first charging interface as charging interface A, the second charging interface as charging interface B, the charging pile 50 connected to the first charging interface as charging pile A, and the charging pile 50 connected to the second charging interface as charging pile B as an example, 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 through 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 the communication conversion unit 30 using a second communication message. The communication conversion unit 30 communicates with charging pile B using the first communication message, thereby realizing the conversion between the first and second communication messages through the communication conversion unit 30, thus realizing the 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 communicates directly with charging pile A using a first communication message and simultaneously communicates with communication conversion unit 30 using a second communication message. Communication conversion unit 30 communicates with charging pile B using the first communication message. Thus, the controller realizes communication with charging pile B based on the conversion function of the first and second communication messages of communication conversion unit 30. Therefore, the controller can simultaneously realize communication with charging pile A and charging pile B, achieving dual-charging-pile joint charging.

[0046] Through the above methods, the controller 40 can communicate with two independent national standard charging piles simultaneously, and dynamically allocate charging needs 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.

[0047] According to some embodiments of this application, optionally, the controller 40 is further configured 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 via 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 via the communication conversion unit 30.

[0048] The vehicle is equipped with two charging state machines that operate independently. For charging piles 50 where the controller 40 communicates directly with the first communication message, the first charging control state machine is used to charge the vehicle. For charging piles 50 where the controller 40 communicates with the communication conversion unit 30, the controller 40 uses the second charging control state machine to charge the vehicle.

[0049] For example, with Figure 2 For example, when the controller determines that charging interface A is connected to charging pile A, but charging interface B is not connected to charging pile B, the controller communicates with charging pile A via a first message. Simultaneously, the controller uses a first charging state controller to enable charging pile A to charge the vehicle, thus performing single-pile charging. When the controller determines that charging interface A is not connected to charging pile A, but charging interface 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 a first communication message, thereby enabling the conversion between the first and second communication messages through communication conversion unit 30. Simultaneously, the controller uses a second charging state controller to enable charging pile B to charge the vehicle, thus 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 directly communicates with charging pile A using the first communication message and communicates with charging pile B through the communication conversion unit 30. At the same time, the first charging status controller controls the charging process between charging pile A and the vehicle, and the second charging status controller controls the charging process between charging pile B and the vehicle, thereby realizing dual-pile charging.

[0050] In this embodiment, a first charging control state machine is used for the charging pile 50 that communicates directly through the first communication message; a second charging control state machine is used for the charging pile 50 that communicates through the communication conversion unit 30, so that the two independent state machines can control the charging of the two independent charging piles 50 separately.

[0051] According to some embodiments of this application, optionally, reference is made to... Figure 3 and Figure 4 The detection unit 20 includes multiple detection loops 21 corresponding to multiple charging interfaces 10. Each detection loop 21 includes: a voltage divider circuit 201, the input terminal of which is connected to the first charging connection confirmation terminal 11 of the corresponding charging interface 10, for dividing the voltage of the first charging connection confirmation terminal 11 to obtain a first voltage V1; a filter circuit 202, the input terminal of which is connected to the output terminal of the voltage divider circuit 201, for filtering the first voltage V1 to obtain a second voltage V2; and a controller 40 connected to the output terminal of the filter circuit 202, for determining the connection status of the corresponding charging interface 10 based on the second voltage V2.

[0052] The detection circuits 21 in the detection unit 20 are respectively connected to the charging interfaces 10. Each 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 method and the corresponding charging mode based on the connection status of each charging interface 10.

[0053] As an example, refer to Figure 2 As shown, the vehicle includes two charging ports 10, designated as charging port A and charging port B. The detection unit 20 includes two detection loops 21, designated as detection loop A and detection loop B. Two charging piles 50 are designated as charging pile A (matched with charging port A) and charging pile B (matched with charging port B). The first connection confirmation terminal of charging port A is connected to detection loop A. Detection loop A confirms whether charging pile A is connected to charging port A based on the voltage at the first connection confirmation terminal of charging port A. Similarly, the first connection confirmation terminal of charging port B is connected to detection loop B. Detection loop B determines whether charging pile B is connected to charging port B based on the voltage at the first connection confirmation terminal of charging port B. The output terminal of detection loop A is connected to one detection input terminal of the controller. The controller determines whether charging pile A is connected to charging port A based on the output signal of detection loop A. The output terminal of detection loop B is connected to the other detection input terminal of the controller. The controller determines whether charging pile B is connected to charging port B based on the output signal of detection loop B.

[0054] In the detection circuit 21, the input terminal of the voltage divider circuit 201 is connected to the first charging connection confirmation terminal 11 of the charging interface 10. The voltage of the first charging connection confirmation terminal 11 is divided, and the first voltage V1 is obtained by voltage division. The second voltage V2 is obtained by filtering through the filter circuit 202. The filtered second voltage V2 is sent to the controller 40. The controller 40 determines the connection status of the corresponding charging interface 10 based on the second voltage V2.

[0055] In this embodiment, the voltage signal is first divided and output by the voltage divider circuit 201 to reduce the voltage value input to the controller. Then, the filtering operation of the filter circuit 202 is used to eliminate signal interference and improve detection accuracy.

[0056] According to some embodiments of this application, optionally, the voltage divider circuit 201 includes: a first resistor R1, the first end of which is connected to a preset power supply VCC; a second resistor R2, the first end of which is connected to the second end of the first resistor R1 to form a first node a, the second end of which is grounded, and the first node a is connected to a first charging connection confirmation terminal 11; a third resistor R3, the first end of which is connected to the first node a, and the second end of which is connected to the input terminal of the filter circuit 202; and a fourth resistor R4, the first end of which is connected to the second end of the third resistor R3, and the second end of which is grounded.

[0057] 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 composed of the first resistor R1 and the second resistor R2, and a second-stage voltage divider circuit composed of the third resistor R3 and the fourth resistor R4. When the connection confirmation terminal is not connected to the charging gun, the first resistor R1 and the second resistor R2 perform a voltage divider operation on the preset power supply VCC, and the corresponding first voltage divider is output from the first node a. Then, the first voltage divider is further divided by the third resistor R3 and the fourth resistor R4 to obtain the first voltage V1, which is then output through node O. When the first charging connection confirmation terminal 11 of the charging interface 10 is connected to the charging pile 50, the voltage divider circuit changes, thereby affecting the first voltage V1 output by node O. The filtered output of the changed first voltage V1, the second voltage V2, is input to the controller 40. At this time, the controller 40 can determine that the charging interface 10 is connected to the charging pile 50 based on the changed second voltage V2. The controller 40 can pre-store the effective range of the detection voltage. When the acquired second voltage V2 is within the effective range of the detection voltage, it determines 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.

[0058] 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 a corresponding electronic component in the charging pile 50 to change the voltage divider resistor or input voltage of the voltage divider circuit 201, thereby changing the first voltage V1 and thus changing 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; this is not limited here. In addition, the voltage divider circuit 201 can also be set as a single-stage voltage divider or other multi-stage voltage dividers, which can be set according to the performance of the control chip and the detection quality. Furthermore, the voltage divider circuit 201 can also use a resistor module as the voltage divider resistor; this is not limited here.

[0059] This embodiment uses a voltage divider consisting of a first resistor R1, a second resistor R2, a third resistor R3, and a fourth resistor R4 to reduce the output voltage.

[0060] According to some embodiments of this application, optionally, the filter circuit 202 includes: a fifth resistor R5, the first end of which is connected to the output terminal of the voltage divider circuit 201, and the second end of which is connected to the controller 40; and a first capacitor C1, the first end of which is connected to the second end of the fifth resistor R5, and the second end of the first capacitor C1 is grounded. That is, the first voltage V1 output from node O is input to the RC filter composed of the fifth resistor R5 and the first capacitor C1, and the RC filter performs a filtering operation on the first voltage V1, outputting a second voltage V2 to the controller 40.

[0061] The filter circuit 202 constructed by the fifth resistor R5 and the first capacitor C1 described above is only one possible implementation method of this application. The specific implementation method can be set according to the actual situation. For example, the filter circuit 202 can be composed of only a filter capacitor, or it can be constructed using other filtering methods to filter out interference signals in the first voltage V1 and ensure detection accuracy.

[0062] According to some embodiments of this application, optionally, each of the plurality of charging piles 50 includes: a sixth resistor R6, the first end of the sixth resistor R6 being connected to the second charging connection confirmation terminal 51 of the corresponding charging pile 50, and the second end of the sixth resistor R6 being grounded.

[0063] Continue with Figure 2For example, the charging interface 10 in the vehicle includes charging interface A and 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, the 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 can be 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; similarly, 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.

[0064] Reference Figure 4 As shown, 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 divider 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 the 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. Thus, the controller 40 can determine the effective range of the detection voltage corresponding to the detection circuit 21 according to the parameter settings.

[0065] This embodiment uses the sixth resistor R built into the charging pile 50 to adjust the voltage value output by the detection circuit 21, thereby realizing the detection of the connection status of the charging interface 10. This solution is low in cost and easy to implement.

[0066] In this charging system, after the vehicle is awakened for charging, the controller 40 detects the current connection status of the charging interfaces 10. Based on the connection status of each charging interface 10, it determines the number of charging interfaces 10 connected to the charging pile 50 and the number of charging interfaces 10 connected to the charging pile 50, thus determining the number of charging piles currently connected to the battery system charging circuit. The controller 40 initiates different charging control processes according to the detected charging pile connection status.

[0067] Specifically, refer to Figure 2 As shown, if the current controller determines through the charging interface that only single-pile charging is currently in progress (only charging interface A is connected, or only charging interface B is connected), the system initiates the single-pile charging process. If the current controller determines through the charging interface that dual-pile charging is in progress (both charging interface A and charging interface B are connected), the system initiates the dual-pile charging process. This involves using a first communication message to communicate directly with charging pile A, and communicating with charging pile B through the communication conversion unit 30. Simultaneously, a first charging status controller controls the charging process between charging pile A and the vehicle, and a second charging status controller controls the charging process between charging pile B and the vehicle, thereby achieving dual-pile simultaneous charging.

[0068] Furthermore, if a second charging pile is detected joining the charging system during single-pile charging, the system can simultaneously initiate the charging process of the second charging pile even when the single-pile charging has already started. For example, assuming the current single-pile charging process is charging the vehicle via charging pile A, the controller communicates with charging pile A through a first message and uses a first charging status controller to charge the vehicle. During the charging process of charging pile A, the controller determines that charging interface B is connected to charging pile B based on the voltage of the first charging connection terminal of charging interface B. Then, the controller establishes communication with charging pile B through the communication conversion unit 30 and simultaneously uses the second charging status controller to enable charging pile B to charge the vehicle. At this time, charging piles A and B perform dual-pile simultaneous charging of the vehicle.

[0069] According to some embodiments of this application, refer to Figure 5 The vehicle 1000 includes the aforementioned vehicle charging system 1100.

[0070] According to some embodiments of this application, refer to Figure 6 Vehicle charging methods may include:

[0071] S601, obtain the connection status of multiple charging ports of the vehicle;

[0072] S603, based on the connection status of multiple charging interfaces, communicates with the corresponding charging pile via a first communication message, and / or communicates with the corresponding charging pile via a communication conversion unit to obtain the 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 a first communication message.

[0073] In some embodiments, the plurality of charging interfaces include a first charging interface and a second charging interface. Depending on the connection status of the plurality of charging interfaces, communication is established with the corresponding charging pile via a first communication message, and / or via a communication conversion unit. This includes: if the first charging interface is in a connected state and the second charging interface is in a disconnected state, then communication is established with the charging pile connected to the first charging interface via a first communication message; if the first charging interface is in a disconnected state and the second charging interface is in a connected state, then communication is established with the charging pile connected to the second charging interface via a communication conversion unit; if both the first and second charging interfaces are in a connected state, then communication is established with the charging pile connected to the first charging interface via a first communication message, and also with the charging pile connected to the second charging interface via a communication conversion unit.

[0074] In some embodiments, the method further includes: when communicating with the corresponding charging pile via a first communication message, charging the vehicle using a first charging control state machine based on the corresponding charging information; and when communicating with the corresponding charging pile via a communication conversion unit, charging the vehicle using a second charging control state machine based on the corresponding charging information.

[0075] According to some embodiments of this application, a computer-readable storage medium stores a program thereon that, when executed by a processor, implements the vehicle charging method described above.

[0076] It should be noted that for descriptions of vehicles, methods, and storage media, please refer to the description of the system.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A vehicle charging system, characterized by, The system comprises: a plurality of charging interfaces for connecting a plurality of charging piles; a detection unit for detecting connection states of the plurality of charging interfaces; a communication conversion unit for converting first communication messages and second communication messages, and determining whether to start the communication conversion unit according to the connection states of the plurality of charging interfaces; a controller for communicating with corresponding charging piles directly through the first communication messages according to the connection states of the plurality of charging interfaces, and / or communicating with corresponding charging piles through the communication conversion unit to obtain corresponding charging information, wherein the communication conversion unit and the controller communicate through the second communication messages, and the communication conversion unit and corresponding charging piles communicate through the first communication messages.

2. The vehicle charging system of claim 1, wherein, The plurality of charging interfaces comprises a first charging interface and a second charging interface, and the controller is specifically configured to: if the first charging interface is in a connection state and the second charging interface is in a non-connection state, communicate with a charging pile connected to the first charging interface directly through the first communication messages; if the first charging interface is in a non-connection state and the second charging interface is in a connection state, communicate with a 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 connection states, communicate with a charging pile connected to the first charging interface directly through the first communication messages, and communicate with a charging pile connected to the second charging interface through the communication conversion unit.

3. The vehicle charging system of claim 1 or 2, wherein, The controller is further configured to: when communicating with corresponding charging piles directly through the first communication messages, charge the vehicle based on the corresponding charging information by using a first charging control state machine; when communicating with corresponding charging piles through the communication conversion unit, charge the vehicle based on the corresponding charging information by using a second charging control state machine.

4. The vehicle charging system of claim 1, wherein, The detection unit comprises a plurality of detection circuits corresponding to the plurality of charging interfaces one by one, and each detection circuit comprises: a voltage dividing circuit, an input end of the voltage dividing circuit being connected to a first charging connection confirmation end of a corresponding charging interface, for dividing a voltage of the first charging connection confirmation end to obtain a first voltage; a filter circuit, an input end of the filter circuit being connected to an output end of the voltage dividing circuit, for filtering the first voltage to obtain a second voltage; the controller being connected to an output end of the filter circuit, for determining the connection state of the corresponding charging interface according to the second voltage.

5. The vehicle charging system of claim 4, wherein, The voltage dividing circuit comprises: a first resistor, a first end of the first resistor being connected to a preset power supply; a second resistor, a first end of the second resistor being connected to a second end of the first resistor and forming a first node, a second end of the second resistor being grounded, and the first node being connected to the first charging connection confirmation end; a third resistor, a first end of the third resistor being connected to the first node, and a second end of the third resistor being connected to an input end of the filter circuit. A fourth resistor, a first end of the fourth resistor being connected with a second end of the third resistor, and a second end of the fourth resistor being grounded.

6. The vehicle charging system of claim 4, wherein, The filter circuit comprises: A fifth resistor, a first end of the fifth resistor being connected with an output end of the voltage dividing circuit, and a second end of the fifth resistor being connected with the controller; A first capacitor, a first end of the first capacitor being connected with the second end of the fifth resistor, and a second end of the first capacitor being grounded.

7. The vehicle charging system of any one of claims 4-6, wherein, Each of the plurality of charging piles comprises: A sixth resistor, a first end of the sixth resistor being connected with a second charging connection confirmation end of the corresponding charging pile, and a second end of the sixth resistor being grounded.

8. A vehicle characterized by comprising: The vehicle charging system according to any one of claims 1-7.

9. A vehicle charging method characterized by, The method comprises: Obtaining connection states of a plurality of charging interfaces of a vehicle; Confirming whether to start a communication conversion unit according to the connection states of the plurality of charging interfaces; According to the connection states of the plurality of charging interfaces, directly communicating with the corresponding charging pile through a first communication message, and / or communicating 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 a second communication message, and the communication conversion unit and the corresponding charging pile communicate through the first communication message.

10. The vehicle charging method according to claim 9, characterized by, The plurality of charging interfaces comprises a first charging interface and a second charging interface, and the directly communicating with the corresponding charging pile through the first communication message and / or the communicating with the corresponding charging pile through the communication conversion unit according to the connection states of the plurality of charging interfaces comprises: If the first charging interface is in a connection state and the second charging interface is in a non-connection state, directly communicating with the charging pile connected with the first charging interface through the first communication message; If the first charging interface is in a non-connection state and the second charging interface is in a connection state, communicating with the charging pile connected with the second charging interface through the communication conversion unit; If the first charging interface and the second charging interface are both in connection states, directly communicating with the charging pile connected with the first charging interface through the first communication message, and communicating with the charging pile connected with the second charging interface through the communication conversion unit.

11. The vehicle charging method according to claim 9 or 10, characterized by, The method further comprises: When directly communicating with the corresponding charging pile through the first communication message, charging the vehicle by 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, charging the vehicle by 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 the program is executed by a processor to implement the vehicle charging method according to any one of claims 9-11.

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