Quick charge relay control method, vehicle, device, equipment and program product

Abstract

The invention relates to the technical field of vehicles, in particular to a fast charging relay control method, a vehicle, a device, equipment and a program product. The method comprises the steps of obtaining a gun insertion state of a charging gun inserted into a vehicle charging port; based on the detection opportunity corresponding to the gun insertion state, whether a fast charging relay is adhered or not is detected, the fast charging relay is used for controlling the electric connection state between the vehicle and a charging pile, and the charging pile comprises a charging gun. According to the application, the detection opportunity of adhesion detection of the fast-charging relay can be flexibly adjusted based on the gun insertion state, so that the influence of excess pressure fluctuation of the charging pile on adhesion detection is avoided, and the accuracy and reliability of adhesion detection of the fast-charging relay are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a fast-charging relay control method, a vehicle, an apparatus, an equipment and a program product. BACKGROUND

[0002] With the rapid development of the electric vehicle industry, the importance of the high-voltage part of the power battery as the power output circuit of the electric vehicle is increasingly valued. The fast-charging relay is installed in the high-voltage charging circuit of the battery system, and responds to the closing instruction of the controller to perform the direct current charging process. After the charging is completed, the fast-charging relay is controlled to be disconnected in response to the disconnection instruction of the controller. If the fast-charging relay sticks during use, it cannot respond to the disconnection instruction of the controller after the charging is completed, and the fast-charging relay will always be in a closed state. Once the fast-charging relay sticks, the vehicle charging port will be electrified after the vehicle high voltage is powered on, which poses a high-voltage safety risk. Currently, the fast-charging relay detection is usually performed after the vehicle system is initialized, and the fast-charging relay is directly detected for sticking during the high-voltage process. However, before the fast-charging relay sticking detection is completed, the user directly connects the charging pile and the vehicle for charging, which will cause the fast-charging relay sticking detection to be affected by the residual voltage fluctuation of the charging pile, and there is a risk of false detection, reducing the reliability of the detection result. SUMMARY

[0003] Based on the defects and deficiencies of the prior art described above, the present application provides a fast-charging relay control method, a vehicle, an apparatus, an equipment and a program product, which can flexibly adjust the detection timing of the fast-charging relay sticking detection based on the plug-in state, thereby avoiding the influence of the residual voltage fluctuation of the charging pile on the sticking detection, and improving the accuracy and reliability of the fast-charging relay sticking detection.

[0004] According to a first aspect of the present application, a fast-charging relay control method is provided, comprising: obtaining a plug-in state of a charging gun inserted into a vehicle charging port; and detecting whether the fast-charging relay sticks based on a detection timing corresponding to the plug-in state, wherein the fast-charging relay is used to control the electrical connection state between the vehicle and a charging pile, and the charging pile includes the charging gun.

[0005] According to the fast-charging relay control method provided by the first aspect of the present application, the detection of whether the fast-charging relay sticks based on the detection timing corresponding to the plug-in state comprises: if the plug-in state indicates that the charging gun is not inserted into the vehicle charging port, detecting whether the fast-charging relay sticks.

[0006] According to the fast charging relay control method provided in the first aspect of the present application, the detection of whether the fast charging relay is stuck based on the detection timing corresponding to the gun insertion state comprises: powering on the high-voltage system of the vehicle if the gun insertion state indicates that the charging gun has been inserted into the vehicle charging port; and detecting whether the fast charging relay is stuck if the battery charging preparation is not ready under the condition that the high-voltage system is powered on and the battery charging preparation is not ready.

[0007] According to the fast charging relay control method provided in the first aspect of the present application, in the process of detecting whether the fast charging relay is stuck, the method further comprises: stopping the detection of whether the fast charging relay is stuck and powering on the high-voltage system of the vehicle if the gun insertion state is updated to indicate that the charging gun has been inserted into the vehicle charging port.

[0008] According to the fast charging relay control method provided in the first aspect of the present application, the powering on of the high-voltage system of the vehicle comprises: closing a pre-charge relay of a pre-charge circuit in the high-voltage system, wherein a buffer resistor is connected in series in the pre-charge circuit; closing a negative electrode relay of a main circuit in the high-voltage system; closing a positive electrode relay of the main circuit; and disconnecting the pre-charge relay.

[0009] According to the fast charging relay control method provided in the first aspect of the present application, after the detection of whether the fast charging relay is stuck, the method further comprises: prohibiting the fast charging relay from being closed if the fast charging relay is stuck; and closing the fast charging relay to enable the charging pile to charge the vehicle through the fast charging relay if the fast charging relay is not stuck.

[0010] According to the second aspect of the present application, a vehicle is provided, which comprises a fast charging relay and a vehicle charging port; and the fast charging relay is controlled by the fast charging relay control method according to any one of the first aspect.

[0011] According to the third aspect of the present application, a fast charging relay control device is provided, which comprises: an acquisition module configured to acquire a gun insertion state of a charging gun inserted into a vehicle charging port; and a detection module configured to detect whether a fast charging relay is stuck based on a detection timing corresponding to the gun insertion state, wherein the fast charging relay is configured to control an electrical connection state between the vehicle and a charging pile, and the charging pile comprises the charging gun.

[0012] According to the fourth aspect of the present application, an electronic device is provided, which comprises: a memory and a processor; the memory is connected with the processor and is configured to store a program; and the processor is configured to realize the fast charging relay control method according to the first aspect by running the program in the memory.

[0013] According to a fifth aspect of the present application, a computer program product is provided, comprising computer program instructions; the computer program instructions cause the processor to execute the fast charging relay control method according to the first aspect when the computer program instructions are run by the processor.

[0014] In the present application, the plug-in state of the charging gun inserted into the vehicle charging port is acquired; based on the detection opportunity corresponding to the plug-in state, it is detected whether the fast charging relay is stuck, wherein the fast charging relay is used to control the electrical connection state between the vehicle and the charging pile, and the charging pile comprises the charging gun. In the above process, based on the plug-in state of the charging gun inserted into the vehicle charging port, the detection opportunity of the fast charging relay sticking detection is flexibly adjusted, thereby avoiding the influence of the residual pressure fluctuation of the charging pile on the sticking detection, and improving the accuracy and reliability of the fast charging relay sticking detection. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0016] FIG. 1 A flowchart of a fast charging relay control method provided by the prior art.

[0017] FIG. 2 A flowchart of a fast charging relay control method provided by an embodiment of the present application.

[0018] FIG. 3 A connection diagram of a high-voltage system not powered provided by an embodiment of the present application.

[0019] FIG. 4 A connection diagram of a high-voltage system powered provided by an embodiment of the present application.

[0020] FIG. 5 A flowchart of a fast charging relay control method provided by an embodiment of the present application.

[0021] FIG. 6 A block diagram of a fast charging relay control device provided by an embodiment of the present application.

[0022] FIG. 7 A structural diagram of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0023] 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 some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] SUMMARY Further analysis will be conducted on the commonly used fast-charging relay adhesion detection method. For example... FIG. 1 As shown, after completing system initialization, the vehicle immediately performs a sticking detection on the fast charging relay. If the fast charging relay is stuck, a fault message indicating sticking is reported, and the vehicle's high-voltage system is prohibited from being powered on. If the fast charging relay is not stuck, the vehicle's high-voltage system is powered on upon receiving the high-voltage command. After the high-voltage system is powered on, if the charging gun on the charging station is not inserted into the vehicle's charging port, the high-voltage system enters the discharge process to supply power to the high-voltage load on the vehicle; if the charging gun is inserted into the vehicle's charging port, the high-voltage battery charging process begins. The vehicle and the charging station exchange charging messages. After the vehicle sends a Battery Ready OK (BRO) message to the charging station indicating that the vehicle's Battery Management System (BMS) is not ready to charge, BRO=00. The Battery Management System (BMS) sends BRO=00 to the charging station, informing it "I am preparing, please wait." Then, the BMS closes the fast-charging relay. That is, at the same time as or after sending BRO=00, the BMS completes internal safety checks and executes the operation of closing the fast-charging relay. The BMS then sends BRO=AA to the charging station. Once the fast-charging relay is successfully closed and all system checks pass, the BMS changes the message status from 00 to AA, indicating "battery ready." Only after receiving BRO=AA will the charging station close its internal relay and begin delivering a large current, meaning the charging station begins charging the vehicle.

[0025] In the aforementioned process, after the vehicle system initialization, a fast-charging relay sticking detection is immediately performed regardless of whether the charging gun is inserted into the vehicle's charging port. If a sticking fast-charging relay is detected, the vehicle's high-voltage system is prevented from receiving power, thus affecting the user experience. If the user inserts the charging gun into the vehicle's charging port before the fast-charging relay sticking detection is complete, the vehicle's high-voltage system will connect to the charging station. Due to fluctuations in the charging station's residual voltage, there is a significant risk of false detection, leading to poor accuracy in the fast-charging relay sticking detection results. Furthermore, charging under conditions where the fast-charging relay is sticking and goes undetected poses a substantial safety hazard.

[0026] Exemplary method In view of the problems in the prior art, the present application provides a fast-charging relay control method, which can be implemented in the form of a software algorithm. The software algorithm implementing the method can run on any device with data processing functions, such as a controller of a vehicle, a cloud server capable of communicating with the vehicle, a smart mobile device, etc. The protection scope of the present application is not limited by the type of the device running the software algorithm implementing the method.

[0027] In one embodiment, as shown in FIG. 1, the flow steps of the fast-charging relay control method include: FIG. 2 Step 201: Obtain a plug-in state of a charging gun inserted into a vehicle charging port.

[0028] In the present embodiment, the vehicle is a vehicle powered by electricity, which stores and provides power through a power battery. In order to ensure the normal operation of the vehicle, the power battery needs to be charged, and the charging pile can input external power to the power battery of the vehicle. Specifically, a vehicle charging port is provided on the vehicle, and the charging pile includes a charging gun. When the vehicle needs to be charged, the user can insert the charging gun into the vehicle charging port to complete the connection of the power transmission channel between the charging pile and the vehicle, thereby providing a basis for charging the vehicle. The plug-in state represents whether the charging gun has been inserted into the vehicle charging port and a reliable connection has been established. Alternatively, determining whether the charging gun is inserted into the vehicle charging port includes a process of determining through a specific connection pin after the charging gun is completely inserted and locked, and a process of confirming through a specific low-voltage pin.

[0029] Step 202: Detect whether the fast-charging relay is stuck based on a detection time corresponding to the plug-in state, wherein the fast-charging relay is used to control the electrical connection state between the vehicle and the charging pile, and the charging pile includes the charging gun.

[0030] In the present embodiment, the plug-in state includes an unplug-in state in which the charging gun is not inserted into the vehicle charging port, and a plug-in state in which the charging gun has been inserted into the vehicle charging port. In order to avoid the influence of the residual voltage fluctuation of the charging pile on the stuck detection when the charging gun is inserted into the vehicle charging port during the stuck detection process of the fast-charging relay, the detection time is flexibly adjusted based on different plug-in states. Only when the fast-charging relay does not have a sticking problem, the vehicle can be charged by the charging pile through the electrical connection state between the vehicle and the charging pile.

[0031] In one embodiment, detecting whether the fast-charging relay is stuck based on a detection time corresponding to the plug-in state includes: if the plug-in state indicates that the charging gun is not inserted into the vehicle charging port, detecting whether the fast-charging relay is stuck.

[0032] ​In this embodiment, if the charging gun status indicator shows that the charging gun is not inserted into the vehicle's charging port, then the physical connection between the charging gun and the vehicle has not yet been established. After the vehicle system is initialized, a fast-charging relay sticking detection is performed immediately. This stage occurs when the vehicle has just been activated, but the vehicle's high-voltage system has not yet been powered on. At this time, the high-voltage electricity from the battery pack has not yet been connected to the entire vehicle system, providing ample time to detect whether the fast-charging relay is sticking. Therefore, the fast-charging relay sticking detection process can be initiated immediately, thereby achieving the primary goal of safety risk prevention.

[0033] In one embodiment, detecting whether the fast charging relay is stuck based on the detection timing corresponding to the plug-in state includes: if the plug-in state indicates that the charging gun has been inserted into the vehicle's charging port, then powering on the vehicle's high-voltage system; after the high-voltage system is powered on, and if the battery charging ready status message indicates that the vehicle has not completed charging preparation, detecting whether the fast charging relay is stuck.

[0034] In this embodiment, if the vehicle must complete the lengthy fast-charging adhesion detection before responding to the "plug in" command, the user will experience a noticeable delay. To ensure a better user experience, the vehicle is allowed to prioritize responding to user requests for plug-in charging, prioritizing the power-on of the high-voltage system to quickly put the vehicle into charging preparation mode. Furthermore, the charging process is a multi-layered safety process. Between the power-on of the vehicle's high-voltage system and the actual charging, there are multiple data interactions between the vehicle and the charging station. Therefore, a final adhesion detection under real high voltage can be performed after the high-voltage system is powered on, thereby ensuring charging safety.

[0035] In one embodiment, the process of detecting whether the fast charging relay is stuck also includes: if the plug status is updated to the point that the charging gun has been inserted into the vehicle's charging port, then the detection of whether the fast charging relay is stuck is stopped, and the vehicle's high-voltage system is powered on.

[0036] In this embodiment, if, during the process of detecting whether the fast-charging relay is stuck while the charging gun is not yet inserted into the vehicle's charging port (indicating the charging gun is not in the charging port status), the user inserts the charging gun into the vehicle's charging port according to actual needs, before the detection is complete, the charging gun status changes. At this point, the detection of whether the fast-charging relay is stuck immediately stops, and the user's charging needs are prioritized by powering on the vehicle's high-voltage system. Furthermore, after the high-voltage system has been powered on, if the battery charging ready status message indicates that the vehicle is not ready to charge, the fast-charging relay can be re-detected for sticking, thereby ensuring charging safety.

[0037] In one embodiment, energizing the vehicle's high-voltage system includes: closing a pre-charge relay in the pre-charge circuit of the high-voltage system, wherein a buffer resistor is connected in series in the pre-charge circuit; closing a negative relay in the main circuit of the high-voltage system; closing a positive relay in the main circuit; and opening the pre-charge relay.

[0038] In this embodiment, as FIG. 3 As shown, the vehicle's high-voltage system main circuit includes a high-voltage power battery, a pre-charge relay, a buffer resistor, a positive relay, a negative relay, and a fast-charge relay. The main circuit, including the positive and negative relays, supplies power to the vehicle's high-voltage load. The pre-charge circuit includes a pre-charge relay and a buffer resistor connected in series. The fast-charge relay connects the high-voltage system to the charging station.

[0039] In this embodiment, before applying high voltage, the pre-charge relay, positive relay, negative relay, and fast-charge relay are all disconnected. After receiving the high-voltage application command, the vehicle first closes the pre-charge relay, then closes the negative relay, forming a pre-charge circuit through the buffer resistor. Then, the positive relay is closed, short-circuiting the pre-charge relay and the buffer resistor. After closing the positive relay, the pre-charge relay is disconnected. At this point, the vehicle's high-voltage system is powered on. The high-voltage system after power-on is as follows... FIG. 4 As shown in the diagram. During the above process, the fast charging relay remains in the off state.

[0040] In this embodiment, the fast charging relay is always in the open state during the fast charging relay adhesion detection process. While the fast charging relay is in the open state, the voltage (denoted as U1) between the fast charging relay connection interface and the negative terminal of the power battery is detected. If U1 is equal to the voltage across the power battery (denoted as Upack), the fast charging relay is considered to be adhered. If U1 is much smaller than Upack, close to 0, the relay is considered not adhered.

[0041] In one embodiment, after detecting whether the fast charging relay is stuck, the method further includes: if the fast charging relay is stuck, then prohibiting the fast charging relay from closing; if the fast charging relay is not stuck, then closing the fast charging relay so that the charging pile can charge the vehicle through the fast charging relay.

[0042] In this embodiment, if the fast-charging relay becomes stuck, its closure will be prohibited, and the charging station will be prohibited from charging the vehicle to avoid safety accidents. The fault information regarding the stuck fast-charging relay can also be reported, prompting relevant personnel to troubleshoot the problem as soon as possible. If the fast-charging relay is not stuck, it will be closed, allowing the charging station to charge the vehicle through the relay, ensuring smooth charging.

[0043] In a specific embodiment, such as FIG. 5 As shown, the specific process of implementing the fast charging relay control method includes: Step 501, Vehicle system initialization; Step 502: Determine whether the charging gun is inserted into the vehicle's charging port. If yes, proceed to step 507; otherwise, proceed to step 503. Step 503: Perform fast charging relay adhesion detection, and simultaneously execute steps 504 and 506; Step 504: Determine if the fast charging relay is stuck. If yes, proceed to step 505; otherwise, proceed to step 507. Step 505: Disable power to the vehicle's high-voltage system; proceed to step 507. Step 506: The gun insertion status changes; proceed to step 507. Step 507: Determine whether a high voltage command has been received. If yes, proceed to step 508. If no, continue to determine whether a high voltage command has been received. Step 508: Based on the high-voltage command, power is applied to the vehicle's high-voltage system; Step 509, proceed with the charging process; Step 510: The vehicle and the charging station exchange messages. Step 511: The vehicle sends BRO=00 to the charging station; Step 512: Perform fast charging relay adhesion detection; Step 513: Determine if the fast charging relay is stuck. If yes, proceed to step 514; otherwise, proceed to step 515. Step 514: Prohibit the charging station from charging the vehicle and report the fast charging relay sticking fault information; Step 515: Close the fast charging relay; Step 516: The charging station begins charging the vehicle.

[0044] In this embodiment, if the fast-charging relay becomes stuck when the charging gun is not inserted into the vehicle's charging port, the vehicle's high-voltage system will be directly prevented from being powered on. Without power to the high-voltage system, the charging station cannot charge the vehicle. Even if the fast-charging relay becomes stuck when the charging gun is inserted into the vehicle's charging port, the charging station can still prevent charging the vehicle by preventing the fast-charging relay from closing, thus ensuring vehicle safety. In this application, the insertion state of the charging gun into the vehicle's charging port is obtained. Based on the detection timing corresponding to the insertion state, the sticking of the fast-charging relay is detected. The fast-charging relay controls the electrical connection between the vehicle and the charging station, which includes the charging gun. In this process, the detection timing for fast-charging relay sticking detection is flexibly adjusted based on the insertion state of the charging gun into the vehicle's charging port, thereby avoiding the influence of charging station residual pressure fluctuations on sticking detection and improving the accuracy and reliability of fast-charging relay sticking detection.

[0045] Exemplary vehicle Accordingly, this application also provides a vehicle, which includes a fast charging relay and a vehicle charging port; the fast charging relay is controlled by the fast charging relay control method provided in any of the above embodiments.

[0046] It should be noted that the fast charging relay is used to control the electrical connection between the vehicle and the charging station, which includes a charging gun. Thus, provided that the fast charging relay is not stuck and all charging safety requirements are met, the charging station charges the vehicle through the fast charging relay.

[0047] The vehicle provided in this embodiment belongs to the same application concept as the fast-charging relay control method provided in the above embodiments of this application. It can apply the fast-charging relay control method provided in any of the above embodiments of this application and has the corresponding functional modules and beneficial effects of the execution method. Technical details not described in detail in this embodiment can be found in the specific processing content of the fast-charging relay control method provided in the above embodiments of this application, and will not be repeated here.

[0048] Exemplary apparatus Accordingly, embodiments of this application also provide a fast-charging relay control device, such as... FIG. 6 As shown, the device may include: The acquisition module 601 is used to acquire the insertion status of the charging gun when it is inserted into the vehicle's charging port. The detection module 602 is used to detect whether the fast charging relay is stuck based on the detection timing corresponding to the charging gun state. The fast charging relay is used to control the electrical connection state between the vehicle and the charging pile, and the charging pile includes a charging gun.

[0049] In one embodiment, the detection module 602 is used to detect whether the fast charging relay is stuck if the charging gun status indicator is not inserted into the vehicle charging port.

[0050] In one embodiment, the detection module 602 is used to power on the vehicle's high-voltage system if the charging gun status indicator shows that the charging gun has been inserted into the vehicle's charging port; and after the high-voltage system is powered on, if the battery charging ready status message indicates that the vehicle has not completed charging preparation, to detect whether the fast charging relay is stuck.

[0051] In one embodiment, the detection module 602 is used to stop detecting whether the fast charging relay is stuck during the process of detecting whether the fast charging relay is stuck, and to power on the vehicle's high-voltage system if the charging gun status is updated to indicate that the charging gun has been inserted into the vehicle's charging port.

[0052] In one embodiment, the detection module 602 is used to close the pre-charge relay of the pre-charge circuit in the high-voltage system, wherein a buffer resistor is connected in series in the pre-charge circuit; close the negative relay of the main circuit in the high-voltage system; close the positive relay of the main circuit; and open the pre-charge relay.

[0053] In one embodiment, the fast charging relay control device further includes a control module for detecting whether the fast charging relay is stuck. If the fast charging relay is stuck, the fast charging relay is prevented from closing; if the fast charging relay is not stuck, the fast charging relay is closed so that the charging pile can charge the vehicle through the fast charging relay.

[0054] The fast-charging relay control device provided in this embodiment belongs to the same application concept as the fast-charging relay control method provided in the above embodiments of this application. It can execute the fast-charging relay control method provided in any of the above embodiments of this application and has the corresponding functional modules and beneficial effects of the execution method. Technical details not described in detail in this embodiment can be found in the specific processing content of the fast-charging relay control method provided in the above embodiments of this application, and will not be repeated here.

[0055] Exemplary electronic device This application also provides an electronic device, such as... FIG. 7 As shown, the electronic device includes a memory 700 and a processor 701.

[0056] The memory 700 is connected to the processor 701 and is used to store programs.

[0057] The processor 701 is used to implement the fast charging relay control method in the above embodiments by running the program stored in the memory 700.

[0058] Specifically, the aforementioned electronic device may also include: a communication interface 702, an input device 703, an output device 704, and a bus 705.

[0059] The processor 701, memory 700, communication interface 702, input device 703, and output device 704 are interconnected via a bus. Among them: Bus 705 may include a pathway for transmitting information between various components of a computer system.

[0060] The processor 701 can be a general-purpose processor, such as a general-purpose central processing unit (CPU), a microprocessor, etc., or an application-specific integrated circuit (ASIC), or one or more integrated circuits used to control the execution of the program of the present invention. It can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0061] The processor 701 may include a main processor, as well as a baseband chip, modem, etc.

[0062] The memory 700 stores a program that executes the technical solution of this invention, and may also store an operating system and other key business functions. Specifically, the program may include program code, which includes computer operation instructions. More specifically, the memory 700 may include read-only memory (ROM), other types of static storage devices capable of storing static information and instructions, random access memory (RAM), other types of dynamic storage devices capable of storing information and instructions, disk storage, flash memory, etc.

[0063] Input device 703 may include a device for receiving data and information input by a user, such as a keyboard, mouse, camera, scanner, light pen, voice input device, touch screen, pedometer, or gravity sensor.

[0064] Output device 704 may include devices that allow information to be output to a user, such as a display screen, printer, speaker, etc.

[0065] The communication interface 702 may include a device that uses any transceiver to communicate with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), Wireless Local Area Network (WLAN), etc.

[0066] The processor 701 executes the program stored in the memory 700 and calls other devices, which can be used to implement the various steps of the fast charging relay control method provided in the above embodiments of this application.

[0067] Exemplary computer program product and storage medium In addition to the methods and devices described above, embodiments of this application may also be computer program products, which include computer program instructions that, when executed by a processor, cause the processor to perform the steps in the fast-charging relay control method described in the embodiments of this application.

[0068] The computer program product can be written in any combination of one or more programming languages ​​to perform the operations of the embodiments of this application. The programming languages ​​include object-oriented programming languages ​​such as Java and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0069] Furthermore, embodiments of this application may also be storage media storing a computer program, which is executed by a processor of the steps in the fast-charging relay control method described in the embodiments of this application.

[0070] For the foregoing method embodiments, in order to simplify the description, they are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, because according to this application, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0071] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For apparatus embodiments, since they are basically similar to method embodiments, the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0072] The steps in the methods of the various embodiments of this application can be adjusted, merged, or deleted in order according to actual needs, and the technical features described in each embodiment can be replaced or combined.

[0073] The modules and sub-modules in the devices and terminals provided in the various embodiments of this application can be merged, divided, and deleted according to actual needs.

[0074] It should be understood that the disclosed terminals, devices, and methods can be implemented in other ways, given the several embodiments provided in this application. For example, the terminal embodiments described above are merely illustrative. For instance, the division of modules or sub-modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple sub-modules or modules may be combined or integrated into another module, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or modules, and may be electrical, mechanical, or other forms.

[0075] The modules or submodules described as separate components may or may not be physically separate. The components that constitute a module or submodule may or may not be physical modules or submodules; that is, they may be located in one place or distributed across multiple network modules or submodules. Some or all of the modules or submodules can be selected to achieve the purpose of this embodiment's solution, depending on actual needs.

[0076] Furthermore, the functional modules or sub-modules in the various embodiments of this application can be integrated into one processing module, or each module or sub-module can exist physically separately, or two or more modules or sub-modules can be integrated into one module. The integrated modules or sub-modules described above can be implemented in hardware or in the form of software functional modules or sub-modules.

[0077] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0078] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software unit executed by a processor, or a combination of both. The software unit can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0079] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0080] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fast-charging relay control method, characterized in that, include: Get the plug-in status of the charging gun when it is inserted into the vehicle's charging port; Based on the detection timing corresponding to the charging gun state, it is detected whether the fast charging relay is stuck. The fast charging relay is used to control the electrical connection state between the vehicle and the charging pile, and the charging pile includes the charging gun.

2. The fast-charging relay control method according to claim 1, characterized in that, The step of detecting whether the fast charging relay is stuck based on the detection timing corresponding to the insertion state includes: If the charging gun status indicates that the charging gun is not inserted into the vehicle's charging port, then check whether the fast charging relay is stuck.

3. The fast-charging relay control method according to claim 1, characterized in that, The step of detecting whether the fast charging relay is stuck based on the detection timing corresponding to the insertion state includes: If the plug-in status indicates that the charging gun has been plugged into the vehicle's charging port, then the vehicle's high-voltage system is powered on. After the high-voltage system is powered on, and the battery charging ready status message indicates that the vehicle has not completed charging preparation, check whether the fast charging relay is stuck.

4. The fast-charging relay control method according to claim 2, characterized in that, The process of detecting whether the fast charging relay is stuck also includes: If the charging gun status is updated to indicate that the charging gun has been inserted into the vehicle's charging port, then the detection of whether the fast charging relay is stuck will stop, and the high-voltage system of the vehicle will be powered on.

5. The fast-charging relay control method according to claim 3, characterized in that, The step of energizing the high-voltage system of the vehicle includes: Close the pre-charge relay of the pre-charge circuit in the high-voltage system, wherein a buffer resistor is connected in series in the pre-charge circuit; Close the negative relay of the main circuit in the high-voltage system; Close the positive relay of the main circuit; Disconnect the precharge relay.

6. The fast-charging relay control method according to claim 1, characterized in that, After detecting whether the fast charging relay is stuck, the method further includes: If the fast charging relay becomes stuck, then closing the fast charging relay is prohibited; If the fast charging relay does not stick, then the fast charging relay is closed so that the charging pile can charge the vehicle through the fast charging relay.

7. A vehicle, characterized in that, The vehicle includes a fast charging relay and a vehicle charging port; The fast charging relay is controlled by the fast charging relay control method as described in any one of claims 1-6.

8. A fast-charging relay control device, characterized in that, include: The acquisition module is used to acquire the insertion status of the charging gun when it is inserted into the vehicle's charging port. The detection module is used to detect whether the fast charging relay is stuck based on the detection timing corresponding to the state of the charging gun. The fast charging relay is used to control the electrical connection state between the vehicle and the charging pile, and the charging pile includes the charging gun.

9. An electronic device, characterized in that, include: Memory and processor; The memory is connected to the processor and is used to store programs; The processor is used to implement the fast charging relay control method as described in any one of claims 1-7 by running the program in the memory.

10. A computer program product, characterized in that, Includes computer program instructions; When the computer program instructions are executed by the processor, the processor causes the processor to perform the fast charging relay control method as described in any one of claims 1-7.

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