Pure electric vehicle remote power battery maintenance method and system

Abstract

The invention relates to the technical field of power battery maintenance, and discloses a remote power battery maintenance method and system for a pure electric vehicle, and the method comprises the steps: remotely obtaining the operation information of a vehicle end, and if the vehicle end is recognized to be offline for a long time, starting the vehicle end when the operation information representing the restarting of the vehicle end after the vehicle end is offline for a long time is remotely obtained; remotely issuing a target battery maintenance instruction to the vehicle end; the vehicle end remotely receives and prompts a target battery maintenance instruction, and determines whether to carry out battery maintenance; if so, sending a battery maintenance signal to a battery management system; the battery management system identifies the battery maintenance signal and executes a corresponding battery maintenance strategy; and the battery management system judges whether the current maintenance is valid or not so as to determine whether the vehicle end continues to remotely issue a target battery maintenance instruction to the vehicle end when the vehicle end is online again after the current maintenance. According to the invention, an intelligent and closed-loop remote battery maintenance mechanism is constructed, so that the optimal operation state of the power battery is recovered after the power battery is parked for a long time, and the service life of the power battery is prolonged.

Description

Technical Field

[0001] This invention relates to the field of power battery maintenance technology, specifically to a method and system for remote power battery maintenance of pure electric vehicles. Background Technology

[0002] With the rapid development of the electric vehicle market, the performance and lifespan of the on-board power battery, as a core component of electric vehicles, directly affect the overall performance of the vehicle and the user experience. Therefore, to ensure battery performance, certain maintenance strategies are necessary. In particular, if the power battery is not properly maintained after long-term storage, it will face the risk of significant performance degradation or even permanent damage. This is because after long-term storage, the cell capacity will decrease, affecting normal user operation; cell consistency will deteriorate; charge and discharge performance will decline; and battery degradation will accelerate. This will not only shorten the battery's cycle life but may also cause irreversible damage. Therefore, effective maintenance of on-board power batteries after long-term storage is particularly important.

[0003] However, current practices for handling vehicle power batteries after long-term parking only follow the conventional charging process, lacking a timely and effective battery maintenance strategy to ensure battery health and extend service life, which may lead to potential capacity degradation and performance decline. Summary of the Invention

[0004] The present invention aims to provide a method and system for remote maintenance of power batteries in pure electric vehicles. By constructing an intelligent and closed-loop remote battery maintenance mechanism, the power battery can be restored to its optimal operating state after long-term storage, thereby extending its service life.

[0005] The basic solution provided by this invention is: a method for remote maintenance of the power battery of a pure electric vehicle, comprising: S1, the platform remotely monitors the vehicle's operating information and identifies the vehicle's usage status; if the vehicle is identified as being offline for a long time, when the platform remotely obtains operating information indicating that the vehicle has been offline for a long time and then restarts, it remotely sends a target battery maintenance command to the vehicle. S2, the vehicle remotely receives and prompts the target battery maintenance command, and confirms whether to perform battery maintenance; if maintenance is required, a battery maintenance signal is sent to the battery management system on the vehicle. S3, the battery management system recognizes the battery maintenance signal and executes the corresponding battery maintenance strategy; S4, through signal interaction, the vehicle terminal determines whether the maintenance is effective, so as to determine whether the platform terminal should remotely send the target battery maintenance command to the vehicle terminal again when the vehicle terminal is started next time.

[0006] The present invention also provides a remote power battery maintenance system for pure electric vehicles to perform a remote power battery maintenance method for pure electric vehicles. The system includes a monitoring terminal with remote communication connection and several vehicle terminals. The monitoring terminal includes a data acquisition module, a computing module, and an interaction module; The data acquisition module is used to obtain the vehicle's operating information and send it to the computing module and the interaction module. The calculation module is used to identify the usage status of the vehicle terminal based on the vehicle terminal's operating information. If the vehicle terminal is identified as being offline for an extended period of time, the information is sent to the interaction module. The interaction module is used to send a target battery maintenance command to the vehicle when it receives operating information indicating that the vehicle has been offline for a long time or has been restarted after being offline for a long time; it is also used to receive a signal from the vehicle indicating whether the maintenance is effective. On the vehicle side, this includes the electrically connected vehicle controller, command prompt module, command confirmation module, and battery management system; The vehicle controller is used to receive target battery maintenance instructions remotely issued by the monitoring terminal; it is also used to determine whether the current maintenance is effective, so as to determine whether the target battery maintenance instructions should be remotely issued to the vehicle terminal again when the vehicle is started next time. The instruction prompting module is used to prompt the received target battery maintenance instructions; The instruction confirmation module is used to confirm whether battery maintenance is required. The battery management system is used to identify battery maintenance signals and execute corresponding maintenance strategies.

[0007] The working principle and advantages of this invention are as follows: Compared with existing technologies, this invention constructs an intelligent and closed-loop remote battery maintenance mechanism, realizing comprehensive monitoring of the operating status of all connected vehicles and automatic and continuous response to battery maintenance, ensuring that the power battery recovers to its optimal operating state after long-term parking and extending its service life.

[0008] By continuously collecting and analyzing vehicle status data, the battery maintenance process is immediately triggered once a vehicle is identified as meeting preset long-term parking conditions. The battery maintenance command is remotely and forcibly issued as soon as the vehicle comes back online, ensuring that battery maintenance actions can be executed immediately after the vehicle has been parked for a long time, thus improving the timeliness and safety of battery maintenance in this situation. At the same time, because the battery maintenance process takes much longer than the normal charging time, a battery maintenance confirmation step is set up, allowing users to confirm whether maintenance should be performed based on the actual situation, thus improving the user-friendly configuration of the battery maintenance process.

[0009] More importantly, the effectiveness of this maintenance is closely linked to the logic behind the issuance of the maintenance command. For example, if it is determined that the current maintenance was not successfully completed or did not achieve the expected results, the maintenance command will be pushed again the next time the vehicle comes online, until the maintenance is confirmed to be effective. This mechanism significantly improves the execution efficiency and coverage of the battery maintenance strategy, effectively preventing maintenance omissions caused by human error or communication anomalies.

[0010] By applying this invention, not only can the capacity degradation rate of the power battery in a vehicle that has been parked for a long time be significantly slowed down, the battery life be improved, the degradation be delayed, and the battery consistency management level be improved, but the safety and reliability of the whole vehicle under complex usage scenarios can also be enhanced, which has good engineering application prospects and market promotion value. Attached Figure Description

[0011] Figure 1 This is a schematic flowchart of a remote power battery maintenance method for a pure electric vehicle provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a remote power battery maintenance system for pure electric vehicles provided in an embodiment of the present invention. Detailed Implementation

[0012] The following detailed explanation illustrates the specific implementation methods: The basic implementation examples are as follows: Figure 1 As shown: A method for remote maintenance of the power battery of a pure electric vehicle, comprising: S1, remotely acquire vehicle terminal operating information and identify vehicle terminal usage status; if the vehicle terminal is identified as being offline for a long period of time, when remotely acquire operating information indicating that the vehicle terminal has been offline for a long period of time and then restarts, remotely send a target battery maintenance command to the vehicle terminal. S2, the vehicle remotely receives and prompts the target battery maintenance command, and confirms whether to perform battery maintenance; if maintenance is required, a battery maintenance signal is sent to the battery management system on the vehicle. S3, the battery management system recognizes the battery maintenance signal and executes the corresponding battery maintenance strategy; S4, through signal interaction, the vehicle terminal determines whether the maintenance is effective, so as to determine whether the platform will remotely send the target battery maintenance command to the vehicle terminal again when the vehicle terminal starts up next time.

[0013] Specifically: In S1, the operational information also includes the vehicle's offline time and vehicle's online time.

[0014] Each offline time is recorded as an offline event on the vehicle, and each online time is recorded as an online event on the vehicle. In this embodiment, the vehicle's offline and online signals are acquired, and time synchronization technologies (such as NTP or GPS) are used to timestamp the acquired signals, thus obtaining the vehicle's offline and online times. Through this process, offline event times are accurately recorded, the corresponding offline start point is identified through an offline event detection mechanism, and the time information is stored through a log recording function, ultimately achieving reliable mapping and analysis from signal to time.

[0015] In S1, the offline time of the vehicle is calculated based on the vehicle's operating information. It is then determined whether the offline time exceeds a threshold. If it does, the vehicle is identified as being offline for an extended period.

[0016] The threshold can be set to one month or reasonably based on the operating characteristics of the power battery used in the vehicle. The offline duration is calculated by subtracting the vehicle's most recent online time from its most recent offline time. If the last time obtained from the vehicle is an offline time, it means the vehicle is currently parked and turned off. After obtaining the latest online time after this offline time, the difference between the two times is calculated to obtain the offline duration. For example, if the vehicle's log records show the last time as "Vehicle offline time, May 12, 2025, 08:45," and no other times are recorded afterward, and the log records are updated to show the last time as "Vehicle online time, May 15, 2025, 16:20," the interval between the two times does not exceed the threshold of one month, indicating the vehicle has not been parked for a long time. If the log records are updated to show the last time as "Vehicle online time, June 15, 2025, 16:20," the interval between the two times exceeds the threshold of one month, indicating the vehicle has been parked for a long time.

[0017] In S1, when the customer is driving normally, if the vehicle speed is greater than 10km / h, it is determined that the vehicle has started.

[0018] It should be noted that when the vehicle is offline, the platform stops sending signals. When the vehicle is powered on (online), it will enter monitoring normally. After the vehicle is powered on, there are two situations: one is a power-off stop state, in which case the vehicle is only woken up by low voltage and no offline time is judged; the other is a power-on high voltage state, in which case the customer starts the vehicle normally and drives in parallel, and offline time is judged. If the vehicle is brought back online but is not started and driven, it is not considered a valid start and is not included in the vehicle offline time statistics; it will be considered a valid start and the vehicle offline time will be calculated until the vehicle is brought back online and started driving again.

[0019] Understandably, if a vehicle is completely offline for more than the threshold (30 days), a target battery maintenance command will be remotely issued immediately once it is online and started. If the vehicle is online but not started within the threshold (30 days), the power-on is invalid and the number of days will continue to be accumulated. If the vehicle is online and started within the threshold (30 days), the offline time will be recalculated.

[0020] In S2, confirming whether battery maintenance is required includes mandatory system confirmation. After receiving the target battery maintenance instruction, the vehicle immediately sends a battery maintenance signal to the vehicle's battery management system.

[0021] S2 also includes confirmation of whether battery maintenance should be performed, including operator confirmation. After the vehicle receives the target battery maintenance command, it displays the command on the instrument panel, and the operator performs the corresponding operation based on the displayed command, choosing to perform battery maintenance or not. This method adds an operator confirmation environment, allowing the operator to assess the surrounding environment, reducing external interference to battery maintenance, ensuring the safe conduct of the battery maintenance, and improving the safety of battery maintenance.

[0022] In S3, the maintenance strategy includes current limiting during charging to charge the battery at a preset rate to ensure cell balancing and correction. The preset rate can be 0.1-0.2C, and the actual charging rate can be adjusted according to different cells; the specific requirements are to be specified by the battery manufacturer. The charging window can be adjusted according to actual conditions. In this embodiment, charging starts at 70% SOC according to the preset rate.

[0023] In S4, the vehicle-side battery management system executes the maintenance strategy and interacts with the vehicle-side vehicle controller. After the vehicle-side vehicle controller determines whether the maintenance is interrupted or successful, it remotely sends a flag indicating maintenance failure or success to the platform for processing.

[0024] The vehicle determines that the maintenance is valid and uploads a flag indicating successful maintenance to the platform. After receiving the flag indicating successful maintenance, the target battery maintenance instruction disappears and no more target battery maintenance instructions are sent to the vehicle. The battery maintenance of the target battery maintenance instruction is completed, and the platform continues to monitor the vehicle.

[0025] The vehicle determines that the maintenance is invalid and uploads a flag indicating maintenance failure to the platform. After receiving the flag indicating maintenance failure, the platform remotely sends the target battery maintenance command to the vehicle again when the vehicle starts up next time. During this process, the target battery maintenance command will not disappear until the maintenance is successful and will no longer be sent.

[0026] like Figure 2As shown, this embodiment also provides a remote power battery maintenance system for pure electric vehicles, which implements a remote power battery maintenance method for pure electric vehicles. The system includes a monitoring terminal (which may be a vehicle network platform) and several vehicle terminals connected by remote communication. The system includes a monitoring terminal with remote communication connection and several vehicle terminals; The monitoring terminal includes a data acquisition module, a computing module, and an interaction module; The data acquisition module is used to obtain the vehicle's operating information and send it to the computing module and the interaction module. The calculation module is used to identify the usage status of the vehicle terminal based on the vehicle terminal's operating information. If the vehicle terminal is identified as being offline for an extended period of time, the information is sent to the interaction module. The interaction module is used to send a target battery maintenance command to the vehicle when it receives operating information indicating that the vehicle has been offline for a long time or has been restarted after being offline for a long time; it is also used to receive a signal from the vehicle indicating whether the maintenance is effective. The vehicle-side components include a connected vehicle controller, a command prompt module (which can be an instrument cluster for command display), a command confirmation module, and a battery management system. The vehicle controller is used to receive target battery maintenance instructions remotely issued by the monitoring terminal; it is also used to determine whether the current maintenance is effective, so as to determine whether the target battery maintenance instructions should be remotely issued to the vehicle terminal again when the vehicle is started next time. The instruction prompting module is used to prompt the received target battery maintenance instructions; The instruction confirmation module is used to confirm whether battery maintenance is required. The battery management system is used to identify battery maintenance signals and execute corresponding maintenance strategies.

[0027] It is understandable that the above system can execute the above method completely and achieve the same effect, so it will not be elaborated further here.

[0028] This embodiment provides a method and system for remote power battery maintenance of pure electric vehicles. It constructs an intelligent and closed-loop remote battery maintenance mechanism, enabling comprehensive monitoring of the operating status of all connected vehicles and automatic, continuous response to battery maintenance. This ensures that the power battery recovers to its optimal operating state after long-term parking, extending its service life. By continuously collecting and analyzing vehicle status data, once a vehicle is identified as meeting preset long-term parking conditions, the battery maintenance process is immediately triggered. The battery maintenance command is remotely and forcibly issued the moment the vehicle comes back online, ensuring that battery maintenance actions can be executed immediately after long-term parking, improving the timeliness and safety of battery maintenance in such situations. Furthermore, because the battery maintenance process takes much longer than normal charging, a battery maintenance confirmation step is included. Users can confirm whether maintenance should be performed based on the actual situation, improving the user-friendliness of the battery maintenance process. More importantly, the effectiveness of this maintenance is closely related to the logic of the maintenance command issuance. For example, if it is determined that the current maintenance was not successfully completed or did not achieve the expected results, the maintenance command will be repeatedly pushed the next time the vehicle comes online until the maintenance is confirmed to be effective. This mechanism significantly improves the execution efficiency and coverage of battery maintenance strategies, effectively preventing maintenance omissions caused by human negligence or communication anomalies. Through the application of this invention, not only can the capacity degradation rate of power batteries in vehicles with long-term parking be significantly slowed down, increasing battery lifespan, delaying degradation, and improving battery consistency management, but it can also enhance the safety and reliability of the entire vehicle under complex usage scenarios, demonstrating promising engineering application prospects and market promotion value.

[0029] The above descriptions are merely embodiments of the present invention. Commonly known structures and characteristics of the solutions are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of the present invention. These should also be considered within the scope of protection of the present invention, and will not affect the effectiveness of the implementation of the present invention or the practicality of the patent.

Claims

1. A method for remote maintenance of the power battery of a pure electric vehicle, characterized in that, include: S1, the platform remotely monitors the vehicle's operating information and identifies the vehicle's usage status; If the vehicle terminal is identified as having been offline for a long period of time, when the remote acquisition of the operation information indicating that the vehicle terminal has been offline for a long period of time and has been restarted, the target battery maintenance command is remotely sent to the vehicle terminal. S2, the vehicle remotely receives and prompts the target battery maintenance command, and confirms whether to perform battery maintenance; if maintenance is required, a battery maintenance signal is sent to the battery management system on the vehicle. S3, the battery management system recognizes the battery maintenance signal and executes the corresponding battery maintenance strategy; S4, through signal interaction, the vehicle terminal determines whether the maintenance is effective, so as to determine whether the platform terminal should remotely send the target battery maintenance command to the vehicle terminal again when the vehicle terminal is started next time.

2. The method for remote maintenance of a pure electric vehicle's power battery according to claim 1, characterized in that, In S1, the operational information also includes the vehicle's offline time and vehicle's online time.

3. The method for remote maintenance of a pure electric vehicle's power battery according to claim 1, characterized in that, In S1, the operation information also includes vehicle offline signal and vehicle online signal. Combined with time synchronization technology, the acquired signals are timestamped to obtain the vehicle offline time and vehicle online time.

4. The method for remote maintenance of a pure electric vehicle's power battery according to claim 1, characterized in that, In S1, the offline time of the vehicle is calculated based on the vehicle's operating information. It is then determined whether the offline time exceeds a threshold. If it does, the vehicle is identified as being offline for an extended period.

5. The method for remote maintenance of a pure electric vehicle's power battery according to claim 1, characterized in that, In S2, confirming whether battery maintenance is required includes mandatory system confirmation. After receiving the target battery maintenance instruction, the vehicle immediately sends a battery maintenance signal to the vehicle's battery management system.

6. The method for remote maintenance of a pure electric vehicle's power battery according to claim 1, characterized in that, In S2, confirming whether battery maintenance should be performed includes operator confirmation. After the vehicle receives the target battery maintenance command, the command is displayed on the instrument panel inside the vehicle. The operator performs the corresponding operation on the displayed command to choose whether to perform battery maintenance or not.

7. The method for remote maintenance of a pure electric vehicle's power battery according to claim 1, characterized in that, In S3, the maintenance strategy includes current limiting during charging to charge the battery at a preset current rate.

8. The method for remote maintenance of a pure electric vehicle's power battery according to claim 1, characterized in that, In S4, the vehicle determines that the maintenance is valid and uploads a flag indicating successful maintenance to the platform. After receiving the flag indicating successful maintenance, the platform will no longer issue target battery maintenance instructions to the vehicle and will continue to monitor the vehicle.

9. A method for remote maintenance of a power battery in a pure electric vehicle according to claim 1, characterized in that, In S4, the vehicle determines that the maintenance is invalid and uploads a flag indicating maintenance failure to the platform. After receiving the flag indicating maintenance failure, the platform remotely sends the target battery maintenance command to the vehicle again when the vehicle starts up next time, until the maintenance is successful and no further commands are sent.

10. A remote power battery maintenance system for pure electric vehicles, characterized in that, A method for remote power battery maintenance of a pure electric vehicle as described in any one of claims 1-9; the system includes a monitoring terminal with remote communication connection and several vehicle terminals; The monitoring terminal includes a data acquisition module, a computing module, and an interaction module; The data acquisition module is used to obtain the vehicle's operating information and send it to the computing module and the interaction module. The calculation module is used to identify the usage status of the vehicle terminal based on the vehicle terminal's operating information. If the vehicle terminal is identified as being offline for an extended period of time, the information is sent to the interaction module. The interaction module is used to send the target battery maintenance command to the vehicle when it receives operating information indicating that the vehicle has been offline for a long time or has been restarted after being offline for a long time. It is also used to receive signals from the vehicle side indicating whether maintenance is effective; On the vehicle side, this includes the electrically connected vehicle controller, command prompt module, command confirmation module, and battery management system; The vehicle controller is used to receive and send target battery maintenance instructions remotely sent from the monitoring terminal; It is also used to determine whether the maintenance is effective, so as to determine whether the target battery maintenance command will be remotely sent to the vehicle again when the vehicle is started next time; The instruction prompting module is used to prompt the received target battery maintenance instructions; The instruction confirmation module is used to confirm whether battery maintenance is required. The battery management system is used to identify battery maintenance signals and execute corresponding maintenance strategies.

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