Multi-gun charging method and system, storage medium, program product, electronic equipment and vehicle

Abstract

The invention discloses a multi-gun charging method and system, a storage medium, a program product, electronic equipment and a vehicle, according to the scheme, under the condition that charging guns are connected to at least two charging interfaces, vehicle charging is controlled according to a target charging mode, and the target charging mode is configured based on a user; the target charging mode is determined based on a target message on a charging communication bus or determined based on a target message on the charging communication bus, and the target message is used for identifying the target charging mode; wherein the target charging mode comprises an independent charging mode and a master-slave charging mode. Therefore, different charging modes of multi-gun independent charging and multi-gun master-slave charging can be simultaneously supported on the same trolley by means of user configuration or communication detection without changing the design of a communication wire harness of a charging network, and the compatibility of the vehicle to different chargers is improved.

Description

Technical Field

[0001] This invention relates to the field of intelligent vehicle technology, and in particular to a multi-gun charging method and system, storage medium, software product, electronic device and vehicle. Background Technology

[0002] As DC charging technology matures, multi-gun charging is becoming increasingly common. This method allows vehicles to connect to multiple chargers simultaneously, enabling high-power charging when a single charger or corresponding power module cannot meet the vehicle's power requirements, thereby improving charging efficiency and shortening charging time.

[0003] However, due to the lack of national standards for multi-gun charging, there are various multi-gun charging methods on the market, with differences in standards and compatibility issues. This means that the same vehicle often cannot be charged using multiple charging stations, limiting the application scenarios of multi-gun charging. Summary of the Invention

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a multi-gun charging method and system, a storage medium, a program product, an electronic device, and a vehicle. This solution, when at least two charging ports are connected to charging guns, controls vehicle charging according to a target charging mode. The target charging mode is based on user configuration or determined based on a target message on the charging communication bus, whereby the target message is used to identify the target charging mode. The target charging mode includes independent charging mode and master-slave charging mode. Thus, through user configuration or communication detection, different charging modes, such as multi-gun independent charging and multi-gun master-slave charging, can be supported simultaneously on the same vehicle without changing the charging network communication harness design, improving the vehicle's compatibility with different chargers. This solves the problem of incompatibility with diverse multi-gun charging methods in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] In a first aspect, this application provides a multi-gun charging method, comprising: when at least two charging ports are connected to charging guns, controlling vehicle charging according to a target charging mode, wherein the target charging mode is based on user configuration or determined based on a target message on a charging communication bus; wherein the target charging mode includes an independent charging mode and a master-slave charging mode.

[0007] In this way, by using user configuration or communication detection, different charging modes such as multi-gun independent charging and multi-gun master-slave charging can be supported simultaneously on the same vehicle without changing the charging network communication harness design, thus improving the vehicle's compatibility with different chargers. This solves the problem of existing technologies being unable to support diverse multi-gun charging methods.

[0008] In some embodiments of this application, the method further includes: when the user has not configured the target charging mode, determining the target charging mode based on the target message on the charging communication bus.

[0009] In some embodiments of this application, the method further includes: determining a target charging mode based on a target message on the charging communication bus, wherein the target message includes a first message or a second message.

[0010] In some embodiments of this application, determining the target charging mode based on the target message on the charging communication bus includes: if a first message is received on any charging communication bus, then the charging mode is determined to be a master-slave charging mode; the first message is a message sent by the charging gun end.

[0011] In some embodiments of this application, after receiving the first message on any one of the charging communication buses, the method further includes: forwarding the first message to other charging communication buses so that the charging gun end completes multi-gun charging confirmation.

[0012] In some embodiments of this application, determining the target charging mode based on the target message on the charging communication bus includes: controlling any one charging control unit to receive the first message sent by the charging gun end on the corresponding charging communication bus, and then determining the charging mode as master-slave charging.

[0013] In some embodiments of this application, after controlling any one charging control unit to receive the first message sent by the charging gun end on the corresponding charging communication bus, the method further includes: controlling other charging control units to forward the first message to the corresponding charging communication bus so that the charging gun end completes multi-gun charging confirmation.

[0014] In some embodiments of this application, determining the target charging mode based on the target message on the charging communication bus includes: after sending a second message on the first charging communication bus, and receiving the second message on another charging communication bus other than the first charging communication bus, then determining the charging mode as master-slave charging.

[0015] In some embodiments of this application, determining the target charging mode based on the target message on the charging communication bus includes: determining the charging mode as master-slave charging based on first identification information. The first identification information is sent by other charging control units after receiving the second message, which is sent by the first charging control unit on its charging communication bus. The first charging control unit is the control unit corresponding to the first charging interface into which the charging gun is inserted.

[0016] In some embodiments of this application, the method further includes: if the first message and the second message are not received on the charging communication bus, then the charging mode is determined to be an independent charging mode.

[0017] In some embodiments of this application, after determining the charging mode as a master-slave charging mode, the method further includes: continuously receiving a first message sent by the charging gun end on any one of the charging communication buses, and continuously forwarding the first message to other charging communication buses.

[0018] In some embodiments of this application, the method further includes: determining whether there is an abnormality in the corresponding charging circuit based on the current and / or temperature of the first charging interface, wherein the first charging interface is any charging interface.

[0019] In some embodiments of this application, determining whether there is an abnormality in the corresponding charging circuit based on the current of the first charging interface includes: determining that there is an abnormality in the corresponding charging circuit if the current of the first charging interface is less than or equal to a set value.

[0020] In some embodiments of this application, determining whether there is an abnormality in the corresponding charging circuit based on the temperature of the first charging interface includes: if the difference between the current temperature of the first charging interface and the temperature at the previous time is greater than or equal to a first threshold, or if the difference between the current temperature of the first charging interface and the temperature at the previous time is less than or equal to a second threshold, then it is determined that there is an abnormality in the corresponding charging circuit.

[0021] In some embodiments of this application, determining whether there is an abnormality in the corresponding charging circuit based on the current and temperature of the first charging interface includes: if the current of the first charging interface is less than or equal to a set value and the difference between the current temperature of the charging interface and the temperature at the previous moment is greater than or equal to a first threshold, then it is determined that there is an abnormality in the corresponding charging circuit; or, if the current of the first charging interface is less than or equal to a set value and the difference between the current temperature of the first charging interface and the temperature at the previous moment is less than or equal to a first threshold, then it is determined that there is an abnormality in the corresponding charging circuit.

[0022] In some embodiments of this application, the method further includes: when there is an abnormality in the charging circuit, disconnecting the contactor of the charging circuit and outputting an abnormality alert.

[0023] In some embodiments of this application, the method further includes: outputting operation guidance information on the vehicle interface to indicate the resumption of normal charging.

[0024] In some embodiments of this application, the method further includes: recording the current charging mode when all charging circuits are normal; and / or, reminding the user to update the charging mode on the vehicle interface when all charging circuits are normal and the current charging mode is inconsistent with the previously recorded charging mode.

[0025] In some embodiments of this application, controlling vehicle charging according to a target charging mode includes: when the target charging mode is a master-slave charging mode, controlling a second charging control unit to send second identification information on the vehicle bus so that the vehicle can interact with the charger through the second charging control unit to perform master-slave charging; the second charging control unit is the first control unit to receive the handshake message of the national standard charging protocol.

[0026] In some embodiments of this application, controlling vehicle charging according to a target charging mode includes: when the target charging mode is an independent charging mode, controlling each charging control unit to interact with the charger on its respective connected charging communication bus to perform independent charging.

[0027] Secondly, this application provides a multi-gun charging system, comprising: at least two charging interfaces connected to charging guns via a charging communication bus; at least two charging control units, each charging interface corresponding to one charging control unit, each charging interface being connected to a corresponding charging control unit, the charging control units being connected to each other via an in-vehicle bus; at least two of the charging control units being connected to a vehicle controller via the in-vehicle bus, the vehicle controller being used to execute the method described in the first aspect.

[0028] Thirdly, this application provides a multi-gun charging system, comprising: at least two charging interfaces connected to a charging gun and a vehicle controller via a charging communication bus; the vehicle controller is used to execute the method described in the first aspect.

[0029] Fourthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, causes the computer to perform the method as described in the first aspect.

[0030] Fifthly, this application provides a computer program product that stores instructions which, when executed by a computer, cause the computer to perform the method described in the first aspect.

[0031] In a sixth aspect, this application provides an electronic device, comprising: a memory having a computer program stored thereon; and a processor for executing the computer program in the memory to implement the method as described in the first aspect.

[0032] In a seventh aspect, this application provides a vehicle comprising: a system as described in the second or third aspect; or an electronic device as described in the fourth aspect; or a processor configured to perform the method as described in the first aspect.

[0033] The advantages and control methods of the vehicle and electronic equipment compared to the prior art are the same, and will not be elaborated here.

[0034] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0037] Figure 1 This is a schematic diagram of a charging system structure provided according to an embodiment of the present invention;

[0038] Figure 2 This is a schematic diagram of another charging system structure provided according to an embodiment of the present invention;

[0039] Figure 3 This is a schematic diagram of independent charging interaction of the multi-gun charging method provided in the embodiment of the present invention;

[0040] Figure 4 This is a schematic diagram of a master-slave charging interaction in a multi-gun charging method provided by an embodiment of the present invention;

[0041] Figure 5 This is another master-slave charging interaction diagram of the multi-gun charging method provided in the embodiment of the present invention;

[0042] Figure 6 This is a schematic flowchart of a multi-gun charging method provided according to an embodiment of the present invention;

[0043] Figure 7 This is a schematic diagram of the structure of an electronic device provided according to an embodiment of the present invention. Detailed Implementation

[0044] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0045] To facilitate understanding of the implementation schemes provided in this application, the relevant application background of the audio processing method provided in this application will be explained first.

[0046] Reference Figure 1 and Figure 2 The diagram shown is a schematic diagram of the charging system structure provided in an embodiment of the present invention. The charging system consists of two objects: a charger system and a vehicle.

[0047] The charging system includes all charging guns plugged into the vehicle's charging port simultaneously, and the corresponding charger control unit on the charger side. Depending on the charger manufacturer's design, the combination of charging guns and charger control units can take many forms, resulting in two types of multi-gun charging: independent charging and master-slave charging. For example:

[0048] In independent charging mode, each charging gun is equipped with a charger control unit, and each charger control unit communicates independently with the vehicle. In master-slave charging mode, multiple charging gun communication harnesses are connected in parallel to form a charger control unit, which communicates with the vehicle. Alternatively, each charging gun is equipped with a charger control unit, but only one of the units communicates with the vehicle. They exchange messages on the communication bus to determine whether the corresponding charging gun is plugged into the same vehicle and to identify which charger control unit is communicating with the vehicle.

[0049] The vehicle refers to a vehicle that is being charged via a charging port with a charging gun inserted. Each charging port is equipped with a charging control unit, and each charging control unit can communicate independently with the charging gun. In one implementation of this invention, each charging control unit is connected to the vehicle controller via an internal bus, sending data to identify the multi-gun charging method. After receiving and analyzing the data, the vehicle controller directs the communication between each charging control unit and the charging gun on the internal bus, such as... Figure 1 In another implementation of this invention, the charging control unit for each charging port can also be integrated into the vehicle controller, with the vehicle controller communicating with the charging gun, as described above. Figure 2 The situation is shown below.

[0050] The aforementioned vehicle controller can be an onboard BMS (Battery Management System) or VCU (Vehicle Control Unit), or other control units, as long as it has charging control capabilities and functions of power control and charging control.

[0051] The bus through which the charger control unit on the charger side communicates with the charging control unit on the vehicle side can be called a charging network, a charging channel, or a charging circuit.

[0052] Reference Figure 3 The diagram shown illustrates the independent charging interaction of the multi-gun charging method provided in this embodiment of the invention. The charger system includes multiple charger control units, and the vehicle side includes multiple charging control units. Charger control unit 1 is connected to charging control unit 2 via a charging communication bus 1, and they interact according to an international standard charging protocol. Charger control unit 2 is connected to charging control unit 3 via a communication bus 2, and they interact according to the same international standard charging protocol. Similarly, charger control unit N is connected to charging control unit N via a charging communication bus N. This allows for independent charging between each charging path, without communication interaction between them.

[0053] Reference Figure 4 The diagram shown illustrates a master-slave charging interaction method for a multi-gun charging system provided in this embodiment of the invention. The charger system includes a charging control unit and multiple charger energy output modules. The vehicle side includes multiple charging control units. All charging communication buses on the charger side are connected in parallel to the charger control unit 1. The vehicle side is connected to its corresponding charging control unit 1 via each charging communication bus. In the master-slave charging mode, the charger control unit 1 corresponding to the master gun 1 acts as the primary communication unit interacting with the vehicle side. The remaining slave guns do not have communication functions and only serve as energy output units providing power charging during charging.

[0054] Reference Figure 5 The diagram illustrates another master-slave charging interaction method for the multi-gun charging approach provided in this embodiment of the invention. The charger system includes multiple charger control units, and the vehicle side includes multiple charging control units. The charger control units are connected to their respective charging control units via a charging communication bus. In the master-slave charging mode, the charger control unit corresponding to each charging gun can communicate with the vehicle side. During the actual charging process, any charger control unit corresponding to any charging gun can be used as the primary communication unit to communicate with the vehicle side as needed.

[0055] The lack of national standards for multi-gun charging has led to a variety of multi-gun charging methods on the market, with differences in standards and compatibility issues. This means that the same vehicle often cannot be charged using multiple charging stations, limiting the application scenarios of multi-gun charging.

[0056] To address the aforementioned issues, this solution controls vehicle charging based on a target charging mode when at least two charging ports are connected to the charging gun. This target charging mode is either user-configured or determined by a target message on the charging communication bus. The target charging mode includes independent charging mode and master-slave charging mode. Thus, by using user configuration or target message detection, the same vehicle can simultaneously support different charging modes, including multi-gun independent charging and multi-gun master-slave charging, without altering the charging network communication harness design, thereby improving vehicle compatibility with different chargers.

[0057] like Figure 6 The diagram shown is a flowchart illustrating a multi-gun charging method according to an embodiment of the present invention. The method includes:

[0058] 201. When at least two charging ports are connected to the charging gun, control the vehicle charging according to the target charging mode, which is based on user configuration or determined based on the target message on the charging communication bus.

[0059] The aforementioned target message is used to identify the target charging mode, which includes independent charging mode and master-slave charging mode.

[0060] This invention determines the target charging mode by user configuration or target message detection, enabling vehicles to be compatible with charging equipment from different manufacturers. It can achieve both independent charging and master-slave charging, and supports multi-mode charging switching without changing the physical wiring harness on the charger side, thereby improving charging efficiency and safety.

[0061] As an optional implementation, the method further includes: 202. When the user has not configured a target charging mode, determine the target charging mode based on the target message on the charging communication bus.

[0062] For example, the aforementioned "user not configured target mode" could mean that the user has not configured a target charging mode by default if neither the user has selected a master-slave charging mode nor an independent charging mode; or it could mean that an adaptive mode is set in the user interface, and when the user selects the adaptive mode, the user is also assumed not to have configured a target charging mode. In these cases, the user is unaware of which charging modes the charger supports, and the vehicle needs to determine the appropriate charging mode to achieve autonomous charging.

[0063] This invention allows the vehicle controller or charging control unit (BMS) to monitor the charging interface status in real time. When multiple charging guns are detected inserted, the system first reads the charging mode configuration preset by the user on the vehicle's infotainment system (set via the vehicle display or mobile app). If the user has not set a charging mode through the infotainment system or app, the system enters an automatic identification process. Then, it controls the vehicle to charge based on the corresponding target charging mode.

[0064] Optionally, the above method further includes: 200, determining the target charging mode based on the target message on the charging communication bus.

[0065] The target message mentioned above includes either the first message or the second message.

[0066] In this embodiment of the invention, the target charging mode can be determined through passive identification and active identification. Passive identification can be based on either a first message or a second message on the charging communication bus. Similarly, active identification can also be based on either a first message or a second message on the charging communication bus. It should be noted that the first and second messages are not used to limit the specific identification method, but only to distinguish between different identification methods. The following explanation uses passive identification based on the first message to determine the target charging mode, while primarily uses identification based on the second message as an example to illustrate the specific implementation process of step 200 above.

[0067] The passive identification process is as follows:

[0068] As an optional implementation, step 200 above includes the following: 200a. If a first message is received on any charging communication bus, the charging mode is determined to be a master-slave charging mode.

[0069] The first message mentioned above is a message sent by the charging gun end. This message is used by the charger to confirm whether multiple charging guns are plugged into the same vehicle.

[0070] Specifically, upon receiving the first message on the charging communication bus, the vehicle can assume that the charger supports master-slave charging mode and thus confirm the charging mode as master-slave charging mode. For example, assuming that the first message 0x18FF0004 sent by charging gun 1 is received on charging communication bus 1, charging gun 2 can respond with confirmation, thus determining that it is in master-slave charging mode.

[0071] Optionally, after receiving the first message on any charging communication bus in step 200a above, the method further includes: forwarding the first message to other charging communication buses so that the charger can complete the multi-gun charging confirmation. This invention guides the charger to complete the charging mode determination by forwarding the received message to other charging communication buses, ensuring that the multi-gun charging mode of the vehicle and the charger are consistent, thus improving multi-gun charging compatibility.

[0072] As another optional implementation, step 200 above specifically includes the following: 200b, controlling any one of the charging control units to receive the first message sent by the charging gun end on the corresponding charging communication bus, then determining the charging mode as master-slave charging.

[0073] Optionally, after step 200b above, which controls any one charging control unit to receive the first message sent by the charging gun on the corresponding charging communication bus, the method further includes: other charging control units forwarding the first message to the corresponding charging communication bus so that the charging gun completes multi-gun charging confirmation. This invention guides the charger to complete charging mode determination by forwarding the received message to other charging communication buses, ensuring that the multi-gun charging mode of the vehicle and the charger are consistent, thus improving multi-gun charging compatibility.

[0074] Specifically, the communication unit of the charging gun attempts to receive messages with non-standard charging protocol IDs on the charging network. These messages are confirmation messages from the charger that multiple charging guns are plugged into the same vehicle; for ease of understanding, they are referred to as external messages. Any receiving communication unit forwards this message to the internal bus, while other charging gun communication units forward the message to their respective charging networks, enabling the charger to confirm multi-gun charging. When the vehicle controller receives this message via the internal bus, it confirms the charging mode as a master-slave charging mode. For example, suppose the charging gun at charging interface A sends the first message 0x18FF0004. The charging control unit A forwards this message via the vehicle bus to the communication buses of charging interfaces B and C. If charging guns B and C respond with confirmation on their respective charging communication buses (e.g., sending a 0x18FF0006 frame), it is determined to be in master-slave mode. The master control unit A then allocates power quotas, for example, proportionally distributing current based on the rated power of the charging gun.

[0075] After confirming the master-slave charging mode in steps 200a and 200b above, proceed accordingly. Figure 5 Adapt to the corresponding master-slave mode.

[0076] The difference between steps 200a and 200b is that the implementation process of step 200a is based on... Figure 2 The structural topology shown is based on the implementation process of step 200b. Figure 1 The structural topology is shown.

[0077] The active identification process is as follows:

[0078] As an optional implementation, step 200 above includes the following: 200c, after sending a second message on the first charging communication bus, and receiving a second message on another charging communication bus other than the first charging communication bus, the charging mode is determined to be master-slave charging.

[0079] The second message mentioned above is a message actively sent by the vehicle. This message contains the sequence number of the charging control unit or charging communication bus that sent the second message, so that the charging control unit or charging communication bus that receives the second message can confirm that it is in the same charging network or charging channel as the communication unit that sent the message.

[0080] Specifically, the vehicle controller sends a second message 0x18FF0005 on the charging communication bus A. If the message is detected being transmitted back on buses B and C (e.g., charging guns B and C forward the message via buses B / C), then the system is determined to be in master-slave mode. This mechanism verifies the connectivity of the multi-gun communication link through message transmission, ensuring that all charging guns participate in master-slave mode.

[0081] As an optional implementation, step 200 above includes the following: 200d, determining the charging mode as master-slave charging based on the first identification information, wherein the first identification information is sent by other charging control units after the first charging control unit sends the second message on its charging communication bus, and the first charging control unit is the control unit corresponding to the first charging interface into which the charging gun is inserted.

[0082] The first identification information includes the serial number of the charging control unit (charging communication bus) that sent the second message and the serial number of the charging control unit (charging communication bus) that sent the identification. The first identification information is used to inform the vehicle that the first control unit and other charging control units belong to the same charging network or charging channel, so that the vehicle can determine the charging mode as a master-slave charging mode.

[0083] Specifically, the charging control unit (master unit) corresponding to the first inserted charging port sends a second message 0x18FF0005. Upon receiving this message, other charging control units send a first identifier (e.g., 0x18FF0007) to the vehicle bus. The vehicle controller, upon receiving this first identifier, determines the master-slave mode. This process confirms the multi-barrel communication readiness status through an identifier feedback mechanism, thereby determining the charging mode.

[0084] After confirming the master / slave charging mode for 200c and 200d using the above steps, proceed accordingly. Figure 4 Adapt to the corresponding master-slave mode.

[0085] The difference between steps 200c and 200d is that the implementation process of step 200c is based on... Figure 2 The structural topology shown is based on the implementation process of step 200d. Figure 1 The structural topology is shown.

[0086] It should be noted that, since the charging identification time is usually very short, steps S3 and S4 can usually be started simultaneously.

[0087] The multi-gun charging mode determination method proposed in this solution is characterized by determining the communication topology of the charger through the transmission and reception of message signals on the communication bus, thereby identifying the charging mode. It also has the function of forwarding the received messages to other communication buses, guiding the charger to complete the charging mode determination, so that the multi-gun charging mode of the vehicle and the charger are consistent, thus improving the compatibility of multi-gun charging.

[0088] Further optionally, the above method also includes: 200e, if the first message and the second message are not received on the charging communication bus, then the charging mode is determined to be an independent charging mode.

[0089] For example, the system can be configured to default to independent mode if no first or second message is detected within a preset time (e.g., 3 seconds). Alternatively, if no first or second message is received before receiving the international charging protocol message, the charging mode is determined to be independent charging mode. In this case, each charging control unit communicates independently with the charger using the national standard charging protocol, without interference. For example, the charging control unit of charging interface A negotiates power only with charger A, and the charging control unit of charging interface B negotiates power only with charger B.

[0090] As a preferred implementation, after determining the charging mode as a master-slave charging mode, the method further includes: continuously receiving the first message sent by the charging gun on the charging communication bus, and continuously forwarding the first message to other charging communication buses.

[0091] Specifically, in this solution, after continuously receiving the first message sent by the charging gun on the charging communication bus, the first message is continuously forwarded to other charging communication buses. This external message receiving and forwarding action can prevent the multi-gun mode of the charger from malfunctioning, thus enabling multi-gun charging to proceed normally.

[0092] For example, step 201 above, controlling vehicle charging according to the target charging mode, specifically includes the following: when the target charging mode is a master-slave charging mode, controlling the second charging control unit to send second identification information on the in-vehicle bus, so that the vehicle can interact with the charger through the second charging control unit to perform master-slave charging.

[0093] The second charging control unit mentioned above is the first control unit to receive the handshake message of the national standard charging protocol. The second charging control unit and the first charging control unit can be the same charging control unit or different charging control units.

[0094] Specifically, the first charging control unit to receive the handshake message of the national standard charging protocol sends an identifier on the internal bus, causing the vehicle controller to send a charging request to it, enabling it to interact with the charger. Other communication units, upon receiving this, close the interaction of the national standard charging protocol to avoid network anomalies.

[0095] In master-slave charging mode, the second charging control unit (the first to receive the handshake message from the charger) interacts with the charger using the national standard charging protocol. It sends the charging demand calculated by the vehicle controller to the charging gun and transmits the charging parameters and charging status sent by the charger via the national standard protocol to the vehicle controller for dynamic charging control. Simultaneously, charging control units other than those receiving the first message send the first message back to their respective charging networks until charging is complete to ensure the charger correctly identifies the multi-gun connection status. At this point, the first charging control unit (the first to plug in a gun) stops sending the second message (sent by the vehicle) to reduce network load.

[0096] For example, step 201 above, controlling vehicle charging in the target charging mode, further includes the following: when the target charging mode is an independent charging mode, each charging control unit is controlled to interact with the charger on its respective connected charging communication bus for independent charging. In practice, each charging control unit independently executes the charging process according to the national standard protocol (such as GB / T34657-2017). For instance, the control unit of charging interface A negotiates power with charger A, and the control unit of charging interface B negotiates power with charger B, without affecting each other. This process achieves physical isolation through an independent communication bus, avoiding signal interference.

[0097] In independent charging mode, each charging control unit communicates with the charger using the national standard charging protocol and sends the charging parameters and charging status of the charging gun to the vehicle controller. Based on this, the vehicle controller sends a charging request to each charging control unit. In independent charging mode, each charging control unit neither processes the first message nor sends the second message.

[0098] The multi-gun mode identification and adaptation used in this embodiment of the invention has a certain failure rate, so the vehicle needs to have fault identification capability. The above method also includes: 202, determining whether there is an abnormality in the corresponding charging circuit based on the current and / or temperature of the first charging interface, where the first charging interface is any charging interface.

[0099] For example, step 202 above can be implemented as follows: 202a. If the current of the first charging interface is less than or equal to a set value, an abnormality is determined in the corresponding charging circuit. In specific implementation, the set value is dynamically adjusted according to the rated power of the charging gun. For example, the rated power of charging interface A is 120kW (corresponding to a current of approximately 150A). If the current is detected to be below 80A (the set value) for 5 consecutive seconds, it is determined to be abnormal. This set value can be adaptively adjusted based on the charging gun type (e.g., fast charging / slow charging) or ambient temperature (e.g., lowering the threshold at high temperatures).

[0100] For example, step 202 above can also be implemented in the following way: 202b. If the difference between the current temperature of the first charging interface and the temperature at the previous moment is greater than or equal to a first threshold, or if the difference between the current temperature of the first charging interface and the temperature at the previous moment is less than or equal to a second threshold, then it is determined that there is an abnormality in the corresponding charging circuit. In specific implementation, the first threshold (e.g., 5℃ / s) is used to detect a sudden temperature rise (e.g., overheating due to poor contact), and the second threshold (e.g., -2℃ / s) is used to detect a sudden temperature drop (e.g., cooling system failure). For example, if the temperature of charging interface B rises from 40℃ to 48℃ within 1 second (difference of 8℃), then multi-gun charging is abnormal; if it drops from 45℃ to 38℃ within 1 second (difference of -7℃), then multi-gun charging is abnormal.

[0101] For example, step 202 above can also be implemented in the following way: 202c, if the current of the first charging interface is less than or equal to a set value and the difference between the current temperature of the charging interface and the temperature at the previous moment is greater than or equal to a first threshold, then it is determined that the corresponding charging circuit is abnormal; or, if the current of the first charging interface is less than or equal to a set value and the difference between the current temperature of the first charging interface and the temperature at the previous moment is less than or equal to a first threshold, then it is determined that the corresponding charging circuit is abnormal. In specific implementation, a logical "AND" relationship is used for comprehensive judgment. For example, if the current of charging interface C is 40A (lower than the set value of 80A) and the temperature rises sharply by 8℃ / s, then it is determined that the multi-gun charging is abnormal; if the current is 40A and the temperature drops sharply by 7℃ / s, then it is determined that the multi-gun charging is abnormal. This mechanism avoids misjudgment based on a single parameter and improves the reliability of fault diagnosis.

[0102] In this embodiment of the invention, during the charging interaction, the vehicle controller monitors the real-time current of each charging port. Under normal circumstances, the current value of each charging port should be basically the same. If the current of a certain charging port is abnormally low, then there is an abnormality in the current multi-gun charging. The standard for abnormally low current and the judgment time standard can be formulated according to actual needs.

[0103] In this embodiment of the invention, the vehicle controller also monitors the temperature of the charging ports. Under normal circumstances, the temperature rise of each charging port should be basically the same. If the temperature rise of a certain charging port is slower or faster, then there is an abnormality in the current multi-gun charging. The temperature rise detection cycle length and the standard for temperature rise value can be determined according to actual needs.

[0104] Optionally, the above method also includes: when an abnormality occurs in the charging circuit, disconnecting the contactor of the charging circuit and outputting an abnormality alert. Specifically, after determining an abnormality, the vehicle controller sends a power-off signal (e.g., CAN ID 0x18FF0008) to the contactor of the faulty charging interface, while simultaneously displaying a red warning icon on the vehicle's infotainment screen and playing a voice alert (e.g., "Charging interface A is abnormal, please check the connection"). If the user does not handle the issue promptly, the system will record a fault log and restrict subsequent charging functionality.

[0105] In this embodiment of the invention, if an anomaly is detected in the current multi-gun charging, the contactor of the charging circuit with the abnormal current value and temperature rise value should be cut off as soon as possible, and a reminder should be made on the user interface to guide the user to handle the problem. The handling method is usually to prompt the user that there is an anomaly in the multi-gun charging and ask the user to exit the current charging and set another charging mode before trying to charge again, or to prompt the user to maintain the current charging mode and unplug the abnormal charging gun to try again.

[0106] Optionally, the above method also includes: 203. Outputting operation guidance information on the vehicle's infotainment interface to indicate the resumption of normal charging. In practice, the vehicle's infotainment interface displays step-by-step instructions, such as: "1. Disconnect the charging gun; 2. Check the interface for foreign objects; 3. Reinsert the charging gun; 4. Click 'Restart Charging'." After the user completes the operation, the system automatically resets the contactor and resumes charging.

[0107] Optionally, the above method further includes: 204. Recording the current charging mode when no abnormalities occur in all charging circuits; and / or, 205. When no abnormalities occur in all charging circuits and the current charging mode is inconsistent with the historically recorded charging mode, reminding the user to update the charging mode on the vehicle's infotainment system interface. In specific implementation, the vehicle controller records the current charging mode type (such as master-slave mode or independent mode) to non-volatile memory (such as EEPROM) after charging is completed. If the next charging mode is inconsistent with the historical record (such as switching from master-slave mode to independent mode), a prompt will pop up on the vehicle's infotainment system interface: "A change in charging mode has been detected. Update to the current mode?". After the user confirms, the new mode is automatically saved.

[0108] In this embodiment of the invention, after the charging is completed correctly, the charging mode of the vehicle during the current charging is compared with the recorded mode. If the recorded mode is adaptive or the current charging mode is inconsistent with the recorded mode, a prompt is displayed on the user interface asking whether to update the multi-gun charging configuration so that the vehicle can automatically charge according to the correct configuration the next time, reducing the number of attempts.

[0109] This invention provides a multi-gun charging system, comprising: at least two charging interfaces connected to charging guns via a charging communication bus; at least two charging control units, each charging interface corresponding to one charging control unit, each charging interface being connected to a corresponding charging control unit, and each charging control unit being connected to each other via an in-vehicle bus; and at least two charging control units being connected to a vehicle controller via the in-vehicle bus, the vehicle controller being used to execute the method described above.

[0110] like Figure 1 As shown, embodiments of the present invention can employ a distributed architecture: each charging port is equipped with an independent charging control unit, which communicates with the vehicle controller (such as the VCU) via a charging communication bus. For example, charging control unit 1 is connected to charging gun A via charging communication bus 1, charging control unit 2 is connected to charging gun B via charging communication bus 2, and all charging control units are connected to the VCU via an in-vehicle communication bus. The VCU is responsible for coordinating the switching of multi-gun charging modes and fault handling.

[0111] This invention provides a multi-gun charging system, comprising: at least two charging interfaces connected to a charging gun and a vehicle controller via a charging communication bus; the vehicle controller is used to execute the method described above.

[0112] like Figure 2 As shown, embodiments of the present invention can also employ a centralized architecture: all charging interfaces are connected to the vehicle controller (VCU) via different charging communication buses (such as CAN buses). The vehicle controller integrates multiple independent CAN transceivers, each connected to the charging communication bus of each charging gun. The vehicle controller can simultaneously process communications on multiple communication buses and directly perform multi-gun charging mode switching and fault handling.

[0113] Figure 7 This is a schematic diagram of the structure of an electronic device according to an embodiment of this specification. The electronic device 700 includes a processor 701 with one or more processing cores, a memory 702 with one or more computer-readable storage media, and a computer program stored on the memory 702 and executable on the processor. The processor 701 and the memory 702 are electrically connected.

[0114] The processor 701 is the control center of the electronic device 700. It connects various parts of the electronic device 700 via various interfaces and lines. By running or loading software programs and / or units stored in the memory 702, and by calling data stored in the memory 702, it executes various functions and processes data of the electronic device 700, thereby providing overall monitoring of the electronic device 700. The processor 701 can be a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), a Network Processor (NP), etc., and can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application.

[0115] In this embodiment of the application, the processor 701 in the electronic device 700 loads the computer program corresponding to the process of one or more applications into the memory 702 according to the method or steps of the above embodiment, and the processor 701 runs the applications stored in the memory 702 to execute the above method.

[0116] The electronic device according to embodiments of the present invention, by executing the above-described method through user configuration or communication detection, enables simultaneous support for different charging modes—multi-gun independent charging and multi-gun master-slave charging—without altering the charging network communication harness design on the same vehicle, thereby improving the vehicle's compatibility with different chargers. This solves the problem in the prior art of incompatibility with diverse multi-gun charging methods.

[0117] Embodiments of the present invention also provide a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, enables the computer to perform the methods described above. For example, the computer-readable storage medium may be the aforementioned memory including program instructions, which may be executed by a processor of an electronic device to implement or execute the methods, steps, and logic diagrams disclosed in the embodiments of this application.

[0118] This invention also provides a computer program product storing instructions that, when executed by a computer, cause the computer to perform the methods described above. For example, when executed by a computer, the instructions implement or execute the methods, steps, and logic diagrams disclosed in the embodiments of this application.

[0119] Embodiments of the present invention also provide a vehicle comprising the electronic equipment described above, or a processor, the processor being used to execute the methods described above. The vehicle may be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this specification does not specifically limit it.

[0120] According to embodiments of the present invention, vehicles can simultaneously support different charging modes—multi-gun independent charging and multi-gun master-slave charging—without changing the charging network communication harness design, through user configuration or communication detection by electronic devices, control systems, or controllers. This improves the vehicle's compatibility with different chargers and solves the problem of incompatibility with diverse multi-gun charging methods in the prior art.

[0121] The above-described embodiments are only used to illustrate the technical solutions of applying the above methods to vehicles, and are not intended 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 the method can also be used in motor vehicles, trains, and ships, etc., without causing the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0122] In one embodiment, the vehicle can be configured for fully or partially autonomous driving. For example, the vehicle can control itself while in autonomous driving mode, and can determine the current state of the vehicle and its surrounding environment through human intervention, determine the possible behaviors of at least one other vehicle in the surrounding environment, and determine the confidence level corresponding to the probability of that other vehicle performing a possible behavior, and control the vehicle based on the determined information. When the vehicle is in autonomous driving mode, it can be configured to operate without human interaction.

[0123] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0124] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0125] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Although the descriptions of each embodiment in this application have different focuses, and the parts not described in detail in a certain embodiment can be referred to the relevant embodiments of other embodiments, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A multi-gun charging method, characterized in that, include: When at least two charging ports are connected to the charging gun, the vehicle charging is controlled according to the target charging mode, which is based on user configuration or determined based on target messages on the charging communication bus. The target messages are used to identify the target charging mode. The target charging mode includes independent charging mode and master-slave charging mode.

2. The method according to claim 1, characterized in that, Also includes: When the user has not configured the target charging mode, the target charging mode is determined based on the target message on the charging communication bus.

3. The method according to claim 2, characterized in that, Also includes: The target charging mode is determined based on the target message on the charging communication bus, wherein the target message includes a first message or a second message.

4. The method according to claim 3, characterized in that, The step of determining the target charging mode based on the target message on the charging communication bus includes: If the first message is received on any charging communication bus, the charging mode is determined to be master-slave charging mode; the first message is a message sent by the charging gun.

5. The method according to claim 4, characterized in that, After receiving the first message on any one of the charging communication buses, the method further includes: forwarding the first message to other charging communication buses so that the charging gun end can complete the multi-gun charging confirmation.

6. The method according to claim 3, characterized in that, The step of determining the target charging mode based on the target message on the charging communication bus includes: If any charging control unit receives the first message sent by the charging gun on the corresponding charging communication bus, the charging mode is determined to be master-slave charging.

7. The method according to claim 6, characterized in that, After controlling any one of the charging control units to receive the first message sent by the charging gun on the corresponding charging communication bus, the method further includes: controlling other charging control units to forward the first message to the corresponding charging communication bus so that the charging gun can complete the multi-gun charging confirmation.

8. The method according to claim 3, characterized in that, The step of determining the target charging mode based on the target message on the charging communication bus includes: After sending the second message on the first charging communication bus, and receiving the second message on other charging communication buses besides the first charging communication bus, the charging mode is determined to be master-slave charging.

9. The method according to claim 3, characterized in that, The step of determining the target charging mode based on the target message on the charging communication bus includes: The charging mode is determined as master-slave charging based on the first identification information. The first identification information is sent by other charging control units after the first charging control unit sends the second message on its charging communication bus. The first charging control unit is the control unit corresponding to the first charging interface into which the charging gun is inserted.

10. The method according to any one of claims 4-9, characterized in that, Also includes: If neither the first message nor the second message is received on the charging communication bus, the charging mode is determined to be the independent charging mode.

11. The method according to any one of claims 4-9, characterized in that, After determining the charging mode as master-slave charging mode, the following is also included: The system continuously receives the first message sent by the charging gun on any one of the charging communication buses and continuously forwards the first message to other charging communication buses.

12. The method according to claim 1, characterized in that, Also includes: The presence of an abnormality in the corresponding charging circuit is determined based on the current and / or temperature of the first charging interface, where the first charging interface can be any charging interface.

13. The method according to claim 12, characterized in that, The step of determining whether there is an abnormality in the corresponding charging circuit based on the current of the first charging interface includes: If the current at the first charging interface is less than or equal to the set value, it is determined that there is an abnormality in the corresponding charging circuit.

14. The method according to claim 12, characterized in that, The step of determining whether there is an abnormality in the corresponding charging circuit based on the temperature of the first charging interface includes: If the difference between the current temperature and the previous temperature of the first charging interface is greater than or equal to a first threshold, or if the difference between the current temperature and the previous temperature of the first charging interface is less than or equal to a second threshold, then it is determined that there is an abnormality in the corresponding charging circuit.

15. The method according to claim 12, characterized in that, The step of determining whether there is an abnormality in the corresponding charging circuit based on the current and temperature of the first charging interface includes: If the current at the first charging interface is less than or equal to a set value and the difference between the current temperature and the previous temperature of the charging interface is greater than or equal to a first threshold, then it is determined that there is an abnormality in the corresponding charging circuit; or, If the current of the first charging interface is less than or equal to a set value and the difference between the current temperature of the first charging interface and the temperature of the previous time is less than or equal to a first threshold, then it is determined that there is an abnormality in the corresponding charging circuit.

16. The method according to any one of claims 13-15, characterized in that, Also includes: When an abnormality occurs in the charging circuit, the contactor of the charging circuit is disconnected and an abnormality alert is output.

17. The method according to claim 16, characterized in that, Also includes: The vehicle's infotainment system displays instructions on how to resume normal charging.

18. The method according to claim 12, characterized in that, Also includes: Record the charging mode if no abnormalities occur in any of the charging circuits; And / or, when all charging circuits are normal and the current charging mode is different from the historically recorded charging mode, the user will be prompted to update the charging mode on the vehicle's infotainment system.

19. The method according to claim 1, characterized in that, The method of controlling vehicle charging according to the target charging mode includes: When the target charging mode is master-slave charging mode, the second charging control unit is controlled to send the second identification information on the vehicle bus so that the vehicle can interact with the charger through the second charging control unit to perform master-slave charging; the second charging control unit is the first control unit to receive the handshake message of the national standard charging protocol.

20. The method according to claim 1, characterized in that, The method of controlling vehicle charging according to the target charging mode includes: When the target charging mode is independent charging mode, each charging control unit is controlled to interact with the charger on its respective connected charging communication bus to perform independent charging.

21. A multi-gun charging system, characterized in that, include: It has at least two charging ports, which are connected to the charging gun via a charging communication bus; At least two charging control units, one charging control unit corresponding to each charging interface, and each charging interface is connected to the corresponding charging control unit. The charging control units are connected to each other via an in-vehicle bus. At least two of the charging control units are connected to a vehicle controller via the in-vehicle bus, the vehicle controller being used to perform the method according to any one of claims 1-20.

22. A multi-gun charging system, characterized in that, include: It has at least two charging ports, which are connected to the charging gun and the vehicle controller via a charging communication bus; The vehicle controller is used to perform the method according to any one of claims 1-20.

23. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it causes the computer to perform the method according to any one of claims 1 to 20.

24. A computer program product, characterized in that, The computer program product stores instructions that, when executed by a computer, cause the computer to perform the method according to any one of claims 1 to 20.

25. An electronic device, characterized in that, include: A memory on which computer programs are stored; A processor for executing the computer program in the memory to implement the method of any one of claims 1 to 20.

26. A vehicle, characterized in that, include: The system as described in claim 21 or 22; Or, the electronic device as claimed in claim 25; Alternatively, a processor, said processor being configured to perform the method of any one of claims 1-20.

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