New energy vehicle maintenance control method and vehicle

Abstract

The invention discloses a new energy vehicle maintenance control method and a vehicle. The method comprises the steps that first information is collected and obtained, and whether the vehicle is in a maintenance state or not is judged according to the first information; triggering the vehicle to enter a maintenance mode when the vehicle is in the maintenance state; and in the maintenance mode, the TBOX logs out from the enterprise monitoring data platform and stops uploading the whole vehicle data to the enterprise monitoring platform. The problem of vehicle false alarm caused in the maintenance process of the vehicle in the service station is solved.

Description

Technical Field

[0001] The present invention relates to the field of new energy vehicle Internet of Vehicles control, and particularly to a new energy vehicle maintenance control method and vehicle. Background Art

[0002] New energy vehicles are in a critical period of industrial development. The safety issues in the popularization and application of new energy vehicles not only involve the life and property safety of the people, but also are related to the sustainable development of the new energy vehicle industry. In existing new energy vehicles, generally, the safety status information data related to new energy vehicles is uploaded to the enterprise monitoring data platform. The enterprise monitoring data platform sets an interface for the national monitoring data platform and forwards the whole vehicle data of the licensed vehicles to the national monitoring data platform.

[0003] Since the safety-related data of new energy vehicles will be uploaded to the national monitoring data platform, and because new energy vehicles are prone to malfunction alarms due to maintenance errors during vehicle maintenance at service stations, the malfunction alarm information data will be actively reported by the vehicle-end TBOX to the enterprise monitoring data platform and at the same time forwarded to the national monitoring data platform, causing the national regulatory authorities to mistakenly believe that the vehicle has potential safety hazards and require the enterprise to avoid this problem. To solve the problem of false alarms of vehicles caused by vehicle maintenance at service stations and affecting the quality of enterprise vehicle data, a new energy vehicle maintenance control method has been developed to solve this problem. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a new energy vehicle maintenance control method and vehicle, so as to solve the problem that false alarms of vehicles caused by vehicle maintenance at service stations lead to the requirement of rectification by the national regulatory authorities for enterprises.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] A new energy vehicle maintenance control method includes collecting and obtaining the first information and judging whether the vehicle is in a maintenance state according to the first information; when in the maintenance state, triggering the vehicle to enter the maintenance mode; in the maintenance mode, the TBOX logs out from the enterprise monitoring data platform and stops uploading the whole vehicle data to the enterprise monitoring platform.

[0007] The obtained first information includes the status signal of the maintenance mode switch, and judges whether it is in the maintenance state according to the on and off states of the maintenance switch.

[0008] In the maintenance mode, the TBOX sends a speed limit instruction to the VCU, and the VCU executes the speed limit instruction to limit the vehicle speed in the maintenance mode within the set vehicle speed threshold.

[0009] The state of the maintenance switch is manually triggered and the on and off state of the maintenance switch will only be switched after being triggered according to the preset logic.

[0010] Whether to end the maintenance mode is determined based on the first information collected. After determining to end the maintenance mode, the maintenance mode is exited. At this time, TBOX logs in and interacts with the enterprise monitoring data platform and establishes a data interaction link between TBOX and the enterprise monitoring data platform after the login is completed. At the same time, TBOX sends a vehicle speed limit release command to the VCU to release the speed limit.

[0011] The TBOX is connected to the on-board ICM and is used to display maintenance mode entry and exit status information and reminder signals through the ICM.

[0012] When the vehicle is driving in maintenance mode, the lighting status of the vehicle lights is controlled to issue an alarm indication corresponding to the maintenance mode.

[0013] In maintenance mode, TBOX reads vehicle data during maintenance through the vehicle CAN bus and stores the vehicle data in the vehicle-side storage for a set time.

[0014] After the maintenance mode switch is turned on or off, it is determined whether the vehicle is currently stationary and the gear is in the set gear. If so, the maintenance mode is switched on or off according to the state of the maintenance mode switch.

[0015] A new energy vehicle adopts the above-mentioned maintenance control method to perform maintenance control on the vehicle.

[0016] The advantages of the present invention are: by establishing a login and logout strategy with the enterprise monitoring platform through the vehicle VCU, TBOX, ICM and other controllers, the vehicle fault alarm data of new energy vehicles during the maintenance process will not be mistakenly transmitted to the enterprise data platform, and will not be mistakenly transmitted to the national data platform, thereby avoiding misleading the enterprise in analyzing the fault data and saving supervision costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following is a brief description of the contents and symbols in the drawings of the present invention:

[0018] Figure 1 This is a flowchart for executing the new energy vehicle maintenance mode of the present invention.

[0019] in:

[0020] ICM: automotive instrument cluster;

[0021] TBOX: Internet of Vehicles terminal;

[0022] VCU: Vehicle Controller. DETAILED DESCRIPTION

[0023] The specific implementation of the present invention will be further explained in detail below by describing the best embodiment with reference to the accompanying drawings.

[0024] This embodiment provides a new energy vehicle maintenance mode to solve the problem of fault alarms generated by manual maintenance during the maintenance of new energy vehicles at service stations. The fault alarm information data is actively reported by the vehicle-side TBOX to the enterprise monitoring data platform and forwarded to the national monitoring data platform. As a result, the national regulatory authorities believe that the vehicle has safety hazards and require the company to avoid the problem.

[0025] The technical solution adopted by the present invention includes:

[0026] Before vehicle maintenance, the ICM instrument panel switches the vehicle into new energy vehicle maintenance mode. Upon receiving the ICM maintenance mode signal, TBOX stops uploading vehicle data to the enterprise monitoring data platform and logs out. This prevents fault data from being accidentally uploaded to the enterprise monitoring data platform during vehicle maintenance and forwards it to the national monitoring data platform. TBOX also sends a vehicle speed limit (20 km / h) to the VCU, ensuring that the vehicle can only travel below 20 km / h at the service station. This prevents vehicles from leaving the service station without exiting maintenance mode, potentially preventing new energy vehicle data from being uploaded to the national monitoring data platform as required by national regulations. Simultaneously, the ICM illuminates the maintenance indicator and speed limit indicator, and the vehicle's hazard lights. After vehicle maintenance is complete, the ICM instrument panel switches off new energy vehicle maintenance mode. Upon receiving the ICM maintenance mode signal, TBOX logs back into the enterprise monitoring data platform and resumes uploading vehicle data to the platform. The TBOX sends a command to the VCU to release the vehicle speed limit. At the same time, the ICM removes the maintenance indicator and speed limit indicator, and the vehicle removes the double flash indicator lights, and the vehicle returns to normal.

[0027] This embodiment provides a new energy vehicle maintenance control method, which is applicable to the control of new energy vehicles in maintenance mode, reducing or avoiding the defects of false alarms of the monitoring platform and misjudging the vehicle as being in a fault state due to the maintenance process. The method includes collecting first information and determining whether the vehicle is in a maintenance state based on the first information;

[0028] When the vehicle is in maintenance status, it is triggered to enter maintenance mode; in maintenance mode, TBOX logs out from the enterprise monitoring data platform and stops uploading vehicle data to the enterprise detection platform. Since TBOX has logged out of the enterprise monitoring data platform, it can no longer send vehicle data to the enterprise monitoring data platform, and the national data monitoring platform will not receive vehicle data during the maintenance process. This can prevent vehicle fault data during the maintenance process from being mistakenly sent to the platform, and avoid false alarms caused by maintenance process data.

[0029] In this embodiment, the first information obtained includes the status signal of the maintenance mode switch, and it is determined whether the vehicle is in the maintenance state based on the on and off states of the maintenance switch. The maintenance switch can be implemented by the ICM instrument switch. The switch connected to the instrument is used to input the user's intention, so as to manually control the opening and closing of the maintenance mode. The instrument ICM is connected to the switch, and the switch is used to give the ICM a switch signal. The ICM determines whether to enter the maintenance mode according to the switch signal. The maintenance mode can be quickly and simply entered through the manual switch.

[0030] In this embodiment, in order to avoid accidental triggering of the maintenance mode switch, an anti-misoperation mechanism is set: the state of the maintenance switch is manually triggered and the opening and closing state of the maintenance switch will only change after being triggered according to the preset logic. That is, when the maintenance switch is turned on and turned on continuously twice or more within the set time, it means that the user wants the vehicle to enter the maintenance mode without accidental triggering at this time. Therefore, the entry and exit of the maintenance mode will be switched at this time, so as to avoid incorrect triggering caused by accidentally touching the maintenance switch once. The maintenance personnel can select to turn on the maintenance mode through the ICM switch, and the switch needs to be used again to confirm whether to turn on the maintenance mode to avoid accidental touch;

[0031] When confirming to turn on the maintenance mode, although the switch can determine that the vehicle needs to enter the maintenance mode at present, it is also necessary to judge the vehicle state to determine whether the current vehicle meets the conditions for entering the maintenance. Only after the opening and closing state of the maintenance mode switch is triggered, it is judged whether the current vehicle is in a stationary state and the gear is in the set gear. If so, the maintenance mode is switched on or off according to the state of the maintenance mode switch. For example, if the switch is triggered and the vehicle is stationary and the gear is in N gear, the maintenance mode is entered; otherwise, the maintenance mode is not entered. In this way, the entry of the maintenance mode can be accurately realized.

[0032] In this embodiment, the maintenance mode can be entered not only through the maintenance switch but also through the automatic detection method. The automatic detection methods include: detecting whether the current vehicle state meets the state during maintenance. If it meets, it is judged to enter the maintenance mode; where meeting the state during maintenance includes: the front hood of the vehicle is opened for a long time, and the four wheels of the vehicle are off the ground for a long time. If any state is met, it is judged to automatically enter the maintenance mode.

[0033] In this embodiment, a combination of manual and automatic methods is used for the entry and exit of the maintenance mode;

[0034] When the maintenance switch is turned on and the vehicle is in a stationary state and the gear is in the set gear, or it is detected that the front hood of the vehicle is opened for a long time and the four wheels of the vehicle are off the ground for a long time, it is judged to enter the maintenance mode. This method can comprehensively consider various maintenance scenarios to achieve the purpose of automatically and quickly entering the maintenance mode in combination with the manual method.

[0035] When the maintenance switch is turned off, the maintenance mode is exited.

[0036] In this embodiment, because the vehicle operates in an abnormal mode during maintenance mode, to improve safety and mitigate vehicle safety issues in maintenance mode, the TBOX sends a speed limit command to the VCU. The VCU executes the speed limit command, limiting the vehicle's speed in maintenance mode to a set speed threshold. For example, the speed limit is set to a maximum speed of 20 km / h. This allows for vehicle movement during maintenance but prevents high-speed travel, improving safety in maintenance mode. To enhance driving safety due to the speed limit, the vehicle's lights are controlled to illuminate during maintenance mode to issue a warning corresponding to maintenance mode. The indicator lights use double flashes to provide a warning, thereby enhancing safety during speed-limited driving in maintenance mode.

[0037] Based on the collected information, it is determined whether to exit maintenance mode. Based on the collected first information, it is determined whether to end maintenance mode. After determining to end maintenance mode, maintenance mode is exited. At this time, TBOX logs in and interacts with the enterprise monitoring data platform. After the login is completed, a data exchange link is established between TBOX and the enterprise monitoring data platform. At the same time, TBOX issues a vehicle speed limit release command to the VCU to release the speed limit, realizing normal vehicle data upload and speed limit release after the maintenance mode ends. Normal upload requires TBOX to re-establish a connection with the enterprise monitoring data platform and then upload data according to the preset cycle or conditions after the connection is completed.

[0038] In this embodiment, to provide maintenance mode reminders, the TBOX is connected to the vehicle's ICM, which displays maintenance mode entry and exit status information and reminder signals through the ICM. Both entry and exit of maintenance mode are displayed on the ICM, and corresponding reminders can be provided by illuminating the turtle light and maintenance light.

[0039] In a preferred embodiment, in maintenance mode, TBOX reads vehicle data during the maintenance process via the vehicle CAN bus and stores the data in vehicle-side storage for a set period of time. A new storage unit is added to TBOX to specifically store vehicle data during maintenance mode. Vehicle data can be stored periodically or in a cyclic overwrite format. Although maintenance process data may cause false alarms, it is still useful for post-maintenance fault analysis and subsequent accident accountability. Therefore, after each maintenance, although the data will not be uploaded to the platform, it needs to be stored locally in the vehicle to provide basic data traceability for possible subsequent problems.

[0040] The maintenance control method of this embodiment is applicable to new energy vehicles. By adopting this method, new energy vehicles can reduce the occurrence of problems such as false alarms when the vehicle enters the maintenance mode, and at the same time improve the vehicle safety in the maintenance mode.

[0041] As Figure 1 shown, in the vehicle control method in the maintenance mode of this solution, it includes three parts: ICM, TBOX, and VCU. ICM, TBOX, and VCU are connected to each other through in-vehicle CAN communication; a maintenance mode switch is correspondingly set on the ICM instrument and is connected to the ICM instrument through the switch, so as to achieve the purpose of manually controlling the entry and exit of the maintenance mode. The functions of each part in ICM, TBOX, and VCU are as follows:

[0042] The main functions of ICM are as follows:

[0043] 1. The ICM maintenance mode of the whole vehicle off the production line is defaulted to the closed state; in the state of no any handling, ICM is defaulted to the closed state

[0044] 2. Maintenance personnel can select to turn on the maintenance mode through the ICM switch, and need to confirm again through the switch whether to turn on the maintenance mode to avoid accidental touch;

[0045] 3. After the ICM maintenance mode is confirmed to be turned on, ICM sends a maintenance mode on signal 0x452: ICM_Maintmodeswitch: ON (event cycle signal) to TBOX;

[0046] 4. ICM receives the maintenance mode on signal 0x520: Maintmodeswitchfedback: ON fed back by TBOX, and ICM performs corresponding "text + icon" display, long displays "The vehicle has entered the maintenance mode", and lights up the instrument maintenance light;

[0047] 5. ICM receives 0x403 sent by VCU: VCU_SystemWarnLightSts: Lamp ON, and at the same time lights up the instrument speed limit turtle lamp;

[0048] 6. In the on state of the maintenance mode, maintenance personnel can select to turn off the maintenance mode through ICM, and need to confirm again through the switch whether to turn off the maintenance mode to avoid accidental touch;

[0049] 7. After ICM confirms the shutdown, it sends a maintenance mode off signal 0x452: ICM_Maintmodeswitch: OFF event cycle signal to TBOX;

[0050] 8. The ICM receives the maintenance mode off signal 0x520: Maintmodeswitchfedback: OFF from the TBOX, displays the corresponding "text + icon", displays "Vehicle has exited maintenance mode" for a short time, and turns off the maintenance light;

[0051] 9. The ICM receives the VCU_SystemWarnLightSts: Lamp OFF message from the VCU, turning off the speed limit turtle light and the "Power output limited" message.

[0052] TBOX's main functions are as follows:

[0053] 1. Receive the maintenance mode start signal 0x452: ICM_Maintmodeswitch: ON from the ICM, and determine whether the following conditions are met simultaneously: ① The vehicle is stationary and ② The vehicle is in neutral. After receiving the maintenance mode start signal from the ICM, log out from the enterprise monitoring data platform and stop uploading vehicle data to the enterprise monitoring data platform. If the ICM receives multiple start or stop signals, the TBOX responds to the most recent command.

[0054] 2. TBOX sends the maintenance mode on feedback signal 0x520: Maintmodeswitchfedback: ON to the ICM. However, TBOX does not receive the maintenance mode off command and remains in maintenance mode on.

[0055] 3. TBOX sends 0x520: TBOX_SpeedLimit: Speed limit 20 km / h to the VCU to limit the speed of the entire vehicle. At the same time, it sends the speed limit reason TBOX_SpeedLimitSource: Self-speed limit to the vehicle CAN network to facilitate vehicle diagnosis of the speed limit reason.

[0056] 4. TBOX receives the maintenance mode off signal 0x452 (ICM_Maintmodeswitch: OFF) from the ICM and determines that the following conditions are met simultaneously: ① The vehicle is stationary and ② The vehicle is in neutral. TBOX then logs back into the enterprise monitoring data platform, resumes uploading vehicle data to the platform, and all functions return to normal. If TBOX receives multiple on / off signals from the ICM, it responds to the most recent command.

[0057] 5. TBOX sends the maintenance mode off feedback signal 0x520: Maintmodeswitchfedback: OFF to the ICM. If TBOX does not receive the maintenance mode on command, it remains in the maintenance mode off state.

[0058] 6. TBOX simultaneously sends the signal 0x520: TBOX_SpeedLimit: Normal to the VCU to release the vehicle speed limit. The VCU mainly implements the following functions:

[0059] 1. The VCU receives the TBOX_SpeedLimit: speed limit 20 km / h signal from the TBOX and simultaneously sends the VCU_SystemWarnLightSts: Lamp ON signal to the ICM.

[0060] 2. After the VCU receives the TBOX_SpeedLimit: Normal signal from the TBOX, it removes the speed limit for the entire vehicle and simultaneously sends VCU_SystemWarnLightSts: Lamp OFF to the ICM.

[0061] In this embodiment, the relevant signals transmitted between the components VCU, TBOX, and ICM are shown in the following table:

[0062]

[0063]

[0064] like Figure 1 This is the execution flow chart of the new energy vehicle maintenance mode, and its steps are as follows:

[0065] 1. The vehicle offline maintenance mode is closed by default;

[0066] 2. Maintenance personnel can use the ICM switch to select maintenance mode, and need to switch it again to confirm whether it is on to avoid accidental activation;

[0067] 3. The ICM sends the maintenance mode start signal 0x452: ICM_Maintmodeswitch: ON to the TBOX. The TBOX determines that ① the vehicle is stationary and ② the vehicle is in neutral gear, and directly logs out of the enterprise monitoring data platform and stops uploading vehicle data.

[0068] 4. The TBOX maintenance mode start signal 0x520: Maintmodeswitchfedback: ON is sent to the ICM, which displays the corresponding "text + icon" and displays "Vehicle has entered maintenance mode" for a long time, and lights up the instrument panel maintenance light. At the same time, the TBOX sends 0x520: TBOX_SpeedLimit: Speed limit 20km / h to the VCU;

[0069] 5. The VCU sends 0x403: VCU_SystemWarnLightSts: Lamp ON to the ICM. At the same time, the ICM turns on the speed limit indicator light on the instrument panel.

[0070] 6. Maintenance personnel can choose to turn off the maintenance mode through the ICM and need to switch it on and off again to confirm whether it is turned off to avoid accidental activation;

[0071] 7. The ICM sends the maintenance mode off signal 0x452: ICM_Maintmodeswitch: OFF to TBOX. TBOX determines that ① the vehicle is stationary and ② the vehicle is in neutral. TBOX then logs back into the enterprise monitoring data platform, and the vehicle data resumes uploading to the platform. All functions return to normal.

[0072] 8. TBOX sends the maintenance mode off signal 0x520: Maintmodeswitchfedback: OFF to the ICM, which displays the corresponding “text + icon” and displays “Vehicle has exited maintenance mode” briefly. The maintenance light goes off. At the same time, TBOX sends the signal 0x520: TBOX_SpeedLimit: Normal to the VCU.

[0073] 9. The VCU sends VCU_SystemWarnLightSts: Lamp OFF to the ICM, and the ICM turns off the speed limit turtle light and the "Power output limited" message;

[0074] This solution establishes a login and logout strategy between the vehicle's VCU, TBOX, ICM and other controllers and the enterprise monitoring platform to ensure that the fault alarm data of new energy vehicles during the vehicle maintenance process will not be mistakenly transmitted to the enterprise data platform, and will not be mistakenly transmitted to the national data platform, so as to avoid misleading the enterprise to analyze the fault data and save regulatory costs.

[0075] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A maintenance control method for a new energy vehicle, characterized in that: It includes collecting and obtaining first information and judging whether the vehicle is in a maintenance state based on the first information; triggering the vehicle to enter a maintenance mode when it is in a maintenance state; in the maintenance mode, TBOX logs out from the enterprise monitoring data platform and stops uploading vehicle data to the enterprise monitoring platform.

2. The method for controlling the maintenance of a new energy vehicle according to claim 1, wherein: The first information obtained includes a status signal of a maintenance mode switch, and whether the state is maintenance state is determined according to the on and off status of the maintenance switch.

3. The method for controlling the maintenance of a new energy vehicle according to claim 1, characterized in that: In maintenance mode, TBOX sends a speed limit command to the VCU. The VCU executes the speed limit command to limit the vehicle speed in maintenance mode to the set speed threshold.

4. The method for maintaining control of a new energy vehicle according to claim 2, wherein: The maintenance switch will switch to the on / off state only after it is manually triggered and triggered according to the preset logic.

5. A new energy vehicle maintenance control method according to any one of claims 1-4, characterized in that: Whether to end the maintenance mode is determined based on the first information collected. After determining to end the maintenance mode, the maintenance mode is exited. At this time, TBOX logs in and interacts with the enterprise monitoring data platform and establishes a data interaction link between TBOX and the enterprise monitoring data platform after the login is completed. At the same time, TBOX sends a vehicle speed limit release command to the VCU to release the speed limit.

6. A new energy vehicle maintenance control method according to any one of claims 1-4, characterized in that: The TBOX is connected to the on-board ICM and is used to display maintenance mode entry and exit status information and reminder signals through the ICM.

7. The method for maintaining control of a new energy vehicle according to claim 3, wherein: When the vehicle is driving in maintenance mode, the lighting status of the vehicle lights is controlled to issue an alarm indication corresponding to the maintenance mode.

8. A new energy vehicle maintenance control method according to any one of claims 1-4, characterized in that: In maintenance mode, TBOX reads vehicle data during maintenance through the vehicle CAN bus and stores the vehicle data in the vehicle-side storage for a set time.

9. The method for controlling the maintenance of a new energy vehicle according to claim 2, characterized in that: After the maintenance mode switch is turned on or off, it is determined whether the vehicle is currently stationary and the gear is in the set gear. If so, the maintenance mode is switched on or off according to the state of the maintenance mode switch.

10. A new energy vehicle, characterized in that, The automobile adopts the maintenance control method according to any one of claims 1 to 9 to perform maintenance control on the vehicle.

Images