A method and system for intelligent charging of low-voltage batteries in vehicles

Abstract

This application discloses a method and system for intelligently replenishing a vehicle's low-voltage battery. It determines whether the vehicle's low-voltage battery is depleted and whether the vehicle meets the conditions for replenishing the battery based on vehicle status information; it also determines the vehicle's entry / exit status. When the low-voltage battery is depleted and the vehicle meets the replenishment conditions, the system controls the vehicle's high-voltage system to directly replenish the low-voltage battery based on the vehicle's entry / exit status, or sends a replenishment request to a preset mobile terminal. This system differentiates the implementation scenarios for automatically replenishing the vehicle's low-voltage battery. For vehicles still in the garage with a depleted battery, the high-voltage system is directly controlled to automatically replenish the battery. For vehicles already out of the garage with a depleted battery, a replenishment request is sent to a mobile terminal, allowing the user to participate in the decision-making process for replenishment, thereby reducing the safety hazards associated with replenishing the vehicle's low-voltage battery.

Description

Technical Field

[0001] This application relates to the field of low-voltage battery charging technology for vehicles, and in particular to a smart charging method and system for low-voltage batteries in vehicles. Background Technology

[0002] With the development and popularization of electric vehicles, their functions are becoming increasingly complex and complete, resulting in a growing number of functional components and a sharp increase in the vehicle's static power consumption. Simultaneously, improper driver operation, such as failing to promptly disconnect the constant power switch after operation or prolonged vehicle parking, can lead to additional power consumption in the vehicle's low-voltage battery. This significantly increases the probability of the low-voltage battery becoming depleted, causing considerable inconvenience to normal driving.

[0003] In related technologies, to address the issue of low-voltage battery depletion in vehicles, the battery management system can automatically activate the high-voltage battery in the high-voltage system to replenish the low-voltage battery when its voltage is low. However, while this method solves the problem of low-voltage battery depletion, it may pose certain safety hazards in some specific scenarios. For example, if a repair technician energizes the high-voltage system to replenish the low-voltage battery during vehicle maintenance, the technician risks electric shock.

[0004] Therefore, improving the safety of vehicle charging is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] The main purpose of this application is to provide a method and system for intelligently replenishing low-voltage batteries in vehicles, aiming to solve the technical problem of potential electric shock safety hazards that may arise when replenishing low-voltage batteries in related technologies.

[0006] In a first aspect, this application provides a method for intelligent charging of a vehicle's low-voltage battery, the method comprising the following steps:

[0007] Based on the vehicle status information, determine whether the vehicle's low-voltage battery is depleted, and whether the vehicle meets the conditions for charging the low-voltage battery:

[0008] Determine the vehicle's entry and exit status;

[0009] When the low-voltage battery is depleted and the vehicle meets the charging conditions, the high-voltage system of the vehicle is controlled to directly charge the low-voltage battery according to the vehicle's entry and exit status, or a charging request message is sent to a preset mobile terminal.

[0010] In some embodiments, a power supply control switch is provided on the vehicle. When the power supply control switch is closed, the high-voltage system of the vehicle is normally enabled, and when it is open, the high-voltage system is kept in a de-energized state.

[0011] When the low-voltage battery is depleted, the vehicle meets the charging conditions, and the charging control switch is closed, the high-voltage system of the vehicle is controlled to directly charge the low-voltage battery according to the vehicle's entry and exit status, or a charging request message is sent to a preset mobile terminal.

[0012] In some embodiments, when the low-voltage battery is depleted, the vehicle meets the charging conditions, and the charging control switch is closed, the high-voltage system of the vehicle is controlled to directly charge the low-voltage battery according to the vehicle's entry / exit status, or a charging request message is sent to a preset mobile terminal, including:

[0013] If the vehicle is in the garage state, the high-voltage system of the vehicle is controlled to directly replenish the low-voltage battery;

[0014] If the vehicle is already out of the garage, the charging request information is sent to the mobile terminal.

[0015] In some embodiments, after sending the power replenishment request information to the mobile terminal, the method further includes:

[0016] If the mobile terminal returns a power replenishment authorization message, the high-voltage system is enabled to replenish the low-voltage battery.

[0017] In some embodiments, enabling the high-voltage system to replenish the low-voltage battery further includes:

[0018] Obtain the charging status information of the low-voltage battery and send the charging status information to the mobile terminal;

[0019] Alternatively, if a power-stopping message is received from the mobile terminal, the high-voltage system is enabled to stop powering the low-voltage battery.

[0020] In some embodiments, after enabling the high-voltage system to replenish the low-voltage battery, the method further includes:

[0021] Obtain the charging duration of the low-voltage battery during this charging process;

[0022] When the charging time reaches a preset time threshold, the high-voltage system is powered off to stop charging the low-voltage battery.

[0023] In some embodiments, after enabling the high-voltage system to replenish the low-voltage battery, the method further includes:

[0024] If a power supply control switch disconnect signal is received, the high-voltage system is powered down to stop supplying power to the low-voltage battery.

[0025] In some embodiments, the vehicle status information includes low-voltage battery voltage information, high-voltage system status information, power battery charge information, vehicle ignition lock status information, vehicle speed information, handbrake status information, and gear position information. Based on the vehicle status information, it is determined whether the vehicle's low-voltage battery is depleted and whether the vehicle meets the conditions for recharging, including:

[0026] If the voltage of the low-voltage battery is lower than a preset voltage threshold, then the low-voltage battery is determined to be depleted.

[0027] If the vehicle's high-voltage system is fault-free, the power battery charge is greater than the preset charge threshold, the ignition lock is in the LOCK state, the vehicle speed is less than the preset vehicle speed threshold, the handbrake is engaged, and the gear is in neutral, then the vehicle is determined to meet the charging conditions; otherwise, the vehicle is determined not to meet the charging conditions.

[0028] Secondly, this application also provides an intelligent low-voltage battery charging system for vehicles, the system comprising:

[0029] High-voltage system;

[0030] The vehicle terminal is used to determine whether the vehicle's low-voltage battery is depleted based on vehicle status information, and whether the vehicle meets the conditions for charging the low-voltage battery.

[0031] The vehicle monitoring platform is used to determine the vehicle's entry and exit status, and when the low-voltage battery is depleted and the vehicle meets the charging conditions, it controls the vehicle's high-voltage system to directly charge the low-voltage battery according to the vehicle's entry and exit status, or sends a charging request to a preset mobile terminal.

[0032] In some embodiments, the system further includes:

[0033] The power supply control switch, when closed, enables the vehicle's high-voltage system to function normally, and when open, controls the high-voltage system to remain powered down.

[0034] The vehicle monitoring platform is also used to control the high-voltage system of the vehicle to directly replenish the low-voltage battery according to the vehicle's entry and exit status when the low-voltage battery is depleted, the vehicle meets the replenishment conditions, and the replenishment control switch is closed, or to send a replenishment request message to a preset mobile terminal.

[0035] This application provides a method and system for intelligently replenishing a vehicle's low-voltage battery. It determines whether the vehicle's low-voltage battery is depleted and whether the vehicle meets the conditions for replenishment based on vehicle status information; it also determines the vehicle's entry / exit status. When the low-voltage battery is depleted and the vehicle meets the replenishment conditions, the system controls the vehicle's high-voltage system to directly replenish the low-voltage battery based on the vehicle's entry / exit status, or sends a replenishment request to a preset mobile terminal. This differentiates the implementation scenarios for automatic low-voltage battery replenishment. For vehicles still in the garage experiencing low-voltage battery depletion, the high-voltage system is directly controlled to automatically replenish the battery. For vehicles already out of the garage experiencing low-voltage battery depletion, a replenishment request is sent to a mobile terminal, allowing the user to participate in the decision-making process for replenishment, thereby reducing the safety hazards associated with replenishing the vehicle's low-voltage battery. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 A flowchart illustrating a smart charging method for a vehicle low-voltage battery provided in this application embodiment;

[0038] Figure 2 This is a schematic block diagram of a vehicle low-voltage battery intelligent charging system provided in an embodiment of this application.

[0039] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0040] 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, 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.

[0041] The flowchart shown in the attached diagram is for illustrative purposes only and does not necessarily include all content and operations / steps, nor does it necessarily have to be performed in the order described. For example, some operations / steps can be broken down, combined, or partially merged, so the actual execution order may change depending on the actual situation.

[0042] This application provides a method and system for intelligent charging of low-voltage batteries in vehicles.

[0043] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0044] Please refer to Figure 1 , Figure 1 This is a flowchart illustrating an intelligent charging method for a vehicle low-voltage battery, provided as an embodiment of this application.

[0045] like Figure 1 As shown, the method includes steps S1 to S3.

[0046] Step S1: Determine whether the vehicle's low-voltage battery is depleted based on the vehicle status information, and whether the vehicle meets the conditions for charging the low-voltage battery.

[0047] Step S2: Determine the vehicle's entry and exit status.

[0048] Step S3: When the low-voltage battery is depleted and the vehicle meets the charging conditions, control the high-voltage system of the vehicle to directly charge the low-voltage battery according to the vehicle's entry and exit status, or send a charging request to a preset mobile terminal.

[0049] It is worth noting that the intelligent low-voltage battery charging method in this embodiment can be used in conjunction with, for example... Figure 2 The intelligent power replenishment system shown is implemented. For example... Figure 2 As shown, the power replenishment system used to implement the intelligent power replenishment method for low-voltage batteries in this embodiment includes an on-board terminal, a vehicle monitoring platform, a vehicle controller, and a high-voltage system.

[0050] Specifically, the vehicle-mounted terminal acquires vehicle status information, including the low-voltage battery voltage signal. Based on the acquired measurement status information, the terminal determines whether the vehicle's low-voltage battery is depleted and whether the vehicle meets the conditions for low-voltage battery recharging. When the low-voltage battery is depleted and the vehicle meets the recharging conditions, the acquired vehicle status information is sent to the vehicle monitoring platform. The measurement and monitoring platform determines the vehicle's entry and exit status. Upon receiving the low-voltage battery depletion signal from the vehicle-mounted terminal, it combines this information with the vehicle's entry and exit status to determine whether to control the vehicle's high-voltage system to directly recharge the low-voltage battery, or to have the customer's mobile terminal send a recharging request.

[0051] In a preferred embodiment, the method further includes: setting a power replenishment control switch on the vehicle; when the power replenishment control switch is closed, the high-voltage system of the vehicle is normally enabled; when it is open, the high-voltage system is kept in a de-energized state; when the low-voltage battery is depleted, the vehicle meets the power replenishment conditions, and the power replenishment control switch is closed, the high-voltage system of the vehicle is controlled to directly replenish the low-voltage battery according to the vehicle's entry and exit status, or a power replenishment request message is sent to a preset mobile terminal.

[0052] As an example, the charging control switch can be installed externally on the vehicle in an easily accessible location. The signal from the charging control switch is connected to the vehicle controller. When the charging control switch is turned off, the vehicle controller no longer receives remote charging requests, keeping the high-voltage system in a de-energized state. When the charging control switch is closed, the vehicle's high-voltage system operates normally according to the instructions from the vehicle controller. Therefore, the vehicle monitoring platform, based on the low-voltage battery being depleted, the vehicle meeting the aforementioned charging conditions, and the charging control switch being closed, combined with the vehicle's entry / exit status, determines whether to directly charge the low-voltage battery using the vehicle's high-voltage system, or to send a charging request via the customer's mobile terminal. The high-voltage system, receiving instructions from the vehicle controller to power on and off, charges the low-voltage battery.

[0053] It is worth noting that the vehicle status information includes low-voltage battery voltage information, high-voltage system status information, power battery charge information, vehicle ignition lock status information, vehicle speed information, handbrake status information, and gear position information. Based on the vehicle status information, it is determined whether the vehicle's low-voltage battery is depleted and whether the vehicle meets the conditions for recharging. This includes: if the low-voltage battery voltage is lower than a preset voltage threshold, then the low-voltage battery is determined to be depleted; if the vehicle's high-voltage system is fault-free, the power battery charge is greater than a preset charge threshold, the ignition lock is in the LOCK state, the vehicle speed is less than a preset speed threshold, the handbrake is engaged, and the gear is in neutral, then the vehicle meets the recharging conditions; otherwise, the vehicle does not meet the recharging conditions.

[0054] As an example, the on-board terminal periodically wakes up and acquires vehicle status information, including vehicle fault information, vehicle status (ignition lock status, vehicle speed, handbrake, gear position, etc.), high-voltage power battery SOC, low-voltage battery voltage, and charging control switch status. When the low-voltage battery voltage is lower than a preset voltage threshold, the power battery SOC is greater than 20%, the vehicle's high-voltage system is fault-free, the vehicle is in a power-off and stationary state, and the charging control switch is closed, the on-board terminal reports the vehicle's low battery information to the vehicle monitoring platform. The vehicle monitoring platform makes a judgment based on the vehicle's entry and exit status. If the vehicle has not yet left the warehouse, the platform does not need to push the low battery information to the mobile terminal. The vehicle monitoring platform sends the vehicle's not-yet-left information to the on-board terminal, and the on-board terminal directly wakes up the vehicle controller to control the high-voltage system to automatically charge the low-voltage battery. If the vehicle has already left the warehouse, the vehicle monitoring platform pushes the charging request information to the mobile terminal, notifying the user that authorization for charging is required.

[0055] Understandably, if any of the following conditions are not met: the low-voltage battery voltage is lower than the preset voltage threshold, the power battery SOC is greater than 20%, the vehicle's high-voltage system is fault-free, the vehicle is in a power-off and stationary state, and the charging control switch is in the closed state, the on-board terminal will not report the vehicle's low battery information to the vehicle monitoring platform.

[0056] It is worth noting that when a vehicle enters a garage or parking lot, a security guard device will take a photo to identify the vehicle. The vehicle monitoring platform can interact with the security guard device to determine the vehicle's entry and exit status.

[0057] Furthermore, when the low-voltage battery is depleted, the vehicle meets the charging conditions, and the charging control switch is closed, the high-voltage system of the vehicle is controlled to directly charge the low-voltage battery according to the vehicle's entry / exit status, or a charging request message is sent to a preset mobile terminal. This includes: if the vehicle is in the garage entry state, the high-voltage system of the vehicle is controlled to directly charge the low-voltage battery; if the vehicle is out of the garage state, the charging request message is sent to the mobile terminal.

[0058] As an example, if the vehicle is still in the garage, there is no need to push the charging request information to the mobile terminal. The onboard terminal directly controls the vehicle controller to wake up the high-voltage system and automatically charge the low-voltage battery. If the vehicle has already left the garage, the charging request information needs to be pushed to the mobile terminal, allowing the user to decide whether to automatically charge the battery. It is understood that when the vehicle is in the garage, it indicates that the vehicle is not currently under repair or being used, and the high-voltage system directly charging the low-voltage battery can improve the vehicle's charging efficiency. When the vehicle has left the garage, the user participates in deciding whether to charge the battery, reducing the safety hazards associated with charging the low-voltage battery.

[0059] Furthermore, after sending the power replenishment request information to the mobile terminal, the method further includes: if the mobile terminal returns power replenishment authorization information, enabling the high-voltage system to replenish the low-voltage battery.

[0060] Enabling the high-voltage system to replenish the low-voltage battery further includes: acquiring the replenishment status information of the low-voltage battery and sending the replenishment status information to the mobile terminal; or, if a stop replenishment information is received from the mobile terminal, enabling the high-voltage system to stop replenishing the low-voltage battery.

[0061] As an example, after receiving the authorization information, the vehicle controller sends a power-on command to the high-voltage system, thereby enabling the high-voltage system to replenish the low-voltage battery. During the replenishment process, the vehicle controller feeds back the low-voltage battery replenishment status information to the on-board terminal, which in turn feeds it back to the vehicle monitoring platform. The vehicle monitoring platform then pushes the information to the mobile terminal, allowing the user to view the vehicle's low-voltage replenishment information via the mobile terminal.

[0062] During the charging process, users can also stop the charging process via their mobile devices. When a user sends an authorization to stop the charging process via their mobile device, the vehicle monitoring platform receives the authorization and transmits it to the on-board terminal. The on-board terminal then forwards the charging stop information to the vehicle controller. Upon receiving the charging stop information, the vehicle controller sends a power-off command to the high-voltage system, thereby stopping the charging of the low-voltage battery. After the charging stop is completed, the vehicle controller sends the charging stop information back to the on-board terminal, which in turn sends it back to the vehicle monitoring platform. The vehicle monitoring platform then pushes the information to the mobile device, allowing the user to view the vehicle's charging stop information on their mobile device.

[0063] Preferably, after enabling the high-voltage system to replenish the low-voltage battery, the method further includes: obtaining the replenishment duration of the low-voltage battery during this replenishment; when the replenishment duration reaches a preset duration threshold, enabling the high-voltage system to power down to stop replenishing the low-voltage battery.

[0064] It's worth noting that the vehicle terminal has a pre-set charging timing program, which maps the low-voltage battery voltage to the automatic charging time. Based on the voltage, when the charging time threshold is reached, the vehicle terminal sends a charging end command to the vehicle controller. The vehicle controller receives the command and sends a power-off command to the high-voltage system, thus stopping the charging of the low-voltage battery. After charging is complete, the vehicle controller sends the charging end information back to the vehicle terminal, which then sends it to the vehicle monitoring platform. The vehicle monitoring platform pushes the information to the mobile terminal, allowing users to view the low-voltage charging end information on their mobile devices.

[0065] Furthermore, after enabling the high-voltage system to replenish the low-voltage battery, the method further includes: if a power replenishment control switch disconnection signal is received, then enabling the high-voltage system to power down to stop replenishing the low-voltage battery.

[0066] As an example, during automatic power replenishment, if the vehicle requires repair, even if the repair does not involve the high-voltage system, there is still a risk of electric shock for the repair personnel. From a functional safety perspective, the vehicle must have a way to immediately disconnect the high voltage, and the power replenishment control switch serves this purpose. Before repairs, especially in scenarios where the vehicle has already left the depot, the mobile terminal's push to the owner to turn off automatic power replenishment may be delayed. In this case, the repair personnel can turn off the power replenishment control switch. The signal from the power replenishment control switch is directly connected to the vehicle controller. Upon receiving the signal, the vehicle controller sends a rapid power-down command to the high-voltage system. After the high-voltage system is powered down, the vehicle controller sends the power replenishment termination information back to the onboard terminal, which in turn sends it to the vehicle monitoring platform. The vehicle monitoring platform then pushes the information to the mobile terminal, allowing the user to view the power replenishment termination information on the mobile terminal, while the repair personnel can proceed with the next repair work.

[0067] When a vehicle's low-voltage battery is nearing full charge, but the vehicle unexpectedly activates automatic charging, although the onboard terminal has a preset charging timer program and the charging timer is very short when the battery is nearly full, for functional safety reasons, the vehicle must also have a way to immediately disconnect the high voltage. In the event of unexpected automatic charging activation, the vehicle owner can turn off the charging control switch. Upon receiving this, the vehicle controller sends a rapid power-down command to the high-voltage system. Once the high-voltage system is powered down, the vehicle controller sends the charging stop information back to the onboard terminal, which in turn sends it to the vehicle monitoring platform. The vehicle monitoring platform then pushes the information to a mobile terminal, allowing the user to view the charging stop information on their mobile device, while maintenance personnel can proceed with the next steps of the repair work.

[0068] This application provides a method for intelligently replenishing low-voltage vehicle batteries. Its advantages are twofold: First, it improves the safety of automatic battery replenishment at the vehicle end. By adding a battery replenishment control switch at the vehicle end, the activation and deactivation of the automatic battery replenishment function can be directly controlled, thereby quickly cutting off the high voltage of the entire vehicle. This ensures that in maintenance scenarios and unexpected activation of automatic battery replenishment, users or nearby personnel can quickly cut off the high voltage of the entire vehicle, thus protecting personal safety. Second, it differentiates the implementation scenarios of automatic battery replenishment. The vehicle monitoring platform judges the vehicle's entry and exit status. For vehicles that have not yet left the warehouse and are experiencing battery depletion, the vehicle-side controller is directly activated via the onboard terminal to automatically replenish the battery. For vehicles that have already left the warehouse and are experiencing battery depletion, the platform pushes a notification to a mobile terminal, allowing the user to participate in the decision-making process regarding battery replenishment. User participation in the decision-making process reduces the safety hazards associated with replenishing low-voltage vehicle batteries.

[0069] Please refer to Figure 2 , Figure 2 This is a schematic block diagram of a vehicle low-voltage battery intelligent charging system provided in an embodiment of this application.

[0070] like Figure 2 As shown, the system includes:

[0071] High-voltage system;

[0072] The vehicle terminal is used to determine whether the vehicle's low-voltage battery is depleted based on vehicle status information, and whether the vehicle meets the conditions for charging the low-voltage battery.

[0073] The vehicle monitoring platform is used to determine the vehicle's entry and exit status, and when the low-voltage battery is depleted and the vehicle meets the charging conditions, it controls the vehicle's high-voltage system to directly charge the low-voltage battery according to the vehicle's entry and exit status, or sends a charging request to a preset mobile terminal.

[0074] As an example, the vehicle-mounted terminal acquires vehicle status information, including the low-voltage battery voltage signal. Based on the acquired measurement status information, the terminal determines whether the vehicle's low-voltage battery is depleted and whether the vehicle meets the conditions for low-voltage battery recharging. When the low-voltage battery is depleted and the vehicle meets the recharging conditions, the acquired vehicle status information is sent to the vehicle monitoring platform. The measurement and monitoring platform determines the vehicle's entry and exit status. Upon receiving the low-voltage battery depletion signal from the vehicle-mounted terminal, it combines this information with the vehicle's entry and exit status to determine whether to control the vehicle's high-voltage system to directly recharge the low-voltage battery, or to have the customer's mobile terminal send a recharging request.

[0075] The system also includes:

[0076] The power supply control switch, when closed, enables the vehicle's high-voltage system to function normally, and when open, controls the high-voltage system to remain powered down.

[0077] The vehicle monitoring platform is also used to control the high-voltage system of the vehicle to directly replenish the low-voltage battery according to the vehicle's entry and exit status when the low-voltage battery is depleted, the vehicle meets the replenishment conditions, and the replenishment control switch is closed, or to send a replenishment request message to a preset mobile terminal.

[0078] As an example, the charging control switch can be installed externally on the vehicle in an easily accessible location. The signal from the charging control switch is connected to the vehicle controller. When the charging control switch is turned off, the vehicle controller no longer receives remote charging requests, keeping the high-voltage system in a de-energized state. When the charging control switch is closed, the vehicle's high-voltage system operates normally according to the instructions from the vehicle controller. Therefore, the vehicle monitoring platform, based on the low-voltage battery being depleted, the vehicle meeting the aforementioned charging conditions, and the charging control switch being closed, combined with the vehicle's entry / exit status, determines whether to directly charge the low-voltage battery using the vehicle's high-voltage system, or to send a charging request via the customer's mobile terminal. The high-voltage system, receiving instructions from the vehicle controller to power on and off, charges the low-voltage battery.

[0079] It is worth noting that the vehicle status information includes low-voltage battery voltage information, high-voltage system status information, power battery charge information, vehicle ignition lock status information, vehicle speed information, handbrake status information, and gear position information. Based on the vehicle status information, it is determined whether the vehicle's low-voltage battery is depleted and whether the vehicle meets the conditions for recharging. This includes: if the low-voltage battery voltage is lower than a preset voltage threshold, then the low-voltage battery is determined to be depleted; if the vehicle's high-voltage system is fault-free, the power battery charge is greater than a preset charge threshold, the ignition lock is in the LOCK state, the vehicle speed is less than a preset speed threshold, the handbrake is engaged, and the gear is in neutral, then the vehicle meets the recharging conditions; otherwise, the vehicle does not meet the recharging conditions.

[0080] It's worth noting that if the vehicle is still in the garage, there's no need to push the charging request to the mobile terminal; the onboard terminal directly controls the vehicle controller to wake up the high-voltage system and automatically charge the low-voltage battery. If the vehicle has already left the garage, the charging request needs to be pushed to the mobile terminal, allowing the user to decide whether to automatically charge the battery. Understandably, when the vehicle is in the garage, it means it's not currently under repair or being used, and the high-voltage system directly charging the low-voltage battery improves charging efficiency. When the vehicle has left the garage, user participation in the decision-making process reduces the safety hazards associated with charging the low-voltage battery.

[0081] In some embodiments, exemplary, after receiving authorization information, the vehicle controller sends a power-on command to the high-voltage system, thereby enabling the high-voltage system to replenish the low-voltage battery. During the replenishment process, the vehicle controller feeds back the low-voltage battery replenishment status information to the on-board terminal, which in turn feeds it back to the vehicle monitoring platform. The vehicle monitoring platform then pushes the information to the mobile terminal, allowing the user to view the vehicle's low-voltage replenishment information via the mobile terminal.

[0082] During the charging process, users can also stop the charging process via their mobile devices. When a user sends an authorization to stop the charging process via their mobile device, the vehicle monitoring platform receives the authorization and transmits it to the on-board terminal. The on-board terminal then forwards the charging stop information to the vehicle controller. Upon receiving the charging stop information, the vehicle controller sends a power-off command to the high-voltage system, thereby stopping the charging of the low-voltage battery. After the charging stop is completed, the vehicle controller sends the charging stop information back to the on-board terminal, which in turn sends it back to the vehicle monitoring platform. The vehicle monitoring platform then pushes the information to the mobile device, allowing the user to view the vehicle's charging stop information on their mobile device.

[0083] Preferably, the vehicle terminal has a pre-set charging timing program, which maps the low-voltage battery voltage to the automatic charging time. Based on the voltage, when the charging time threshold is reached, the vehicle terminal sends a charging end command to the vehicle controller. The vehicle controller receives the command and sends a power-off command to the high-voltage system, thus stopping the charging of the low-voltage battery. After charging is complete, the vehicle controller sends the charging end information back to the vehicle terminal, which then sends it to the vehicle monitoring platform. The vehicle monitoring platform pushes the information to the mobile terminal, allowing the user to view the low-voltage charging end information on their mobile device.

[0084] It's worth noting that during automatic power replenishment, if the vehicle requires repairs, even if the repairs don't involve the high-voltage system, there's still a risk of electric shock for repair personnel. From a functional safety perspective, the vehicle must have a way to immediately disconnect the high voltage, and the power replenishment control switch fulfills this function. Before repairs, especially when the vehicle has already left the depot, the mobile terminal's push to the owner to disable automatic power replenishment might be delayed. In this case, the repair personnel can disconnect the power replenishment control switch. The signal from the power replenishment control switch is directly connected to the vehicle controller. Upon receiving the signal, the vehicle controller sends a rapid power-down command to the high-voltage system. Once the high-voltage system is powered down, the vehicle controller sends the power replenishment termination information back to the onboard terminal, which in turn sends it to the vehicle monitoring platform. The vehicle monitoring platform then pushes the information to the mobile terminal, allowing the user to view the power replenishment termination information, while the repair personnel can proceed with the next repair task.

[0085] When a vehicle's low-voltage battery is nearing full charge, but the vehicle unexpectedly activates automatic charging, although the onboard terminal has a preset charging timer program and the charging timer is very short when the battery is nearly full, for functional safety reasons, the vehicle must also have a way to immediately disconnect the high voltage. In the event of unexpected automatic charging activation, the vehicle owner can turn off the charging control switch. Upon receiving this, the vehicle controller sends a rapid power-down command to the high-voltage system. Once the high-voltage system is powered down, the vehicle controller sends the charging stop information back to the onboard terminal, which in turn sends it to the vehicle monitoring platform. The vehicle monitoring platform then pushes the information to a mobile terminal, allowing the user to view the charging stop information on their mobile device, while maintenance personnel can proceed with the next steps of the repair work.

[0086] It should be noted that those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the above-described device and its modules and units can be referred to the corresponding processes in the foregoing embodiments, and will not be repeated here.

[0087] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system 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 system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0088] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above descriptions are merely specific implementations of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for intelligent charging of a vehicle's low-voltage battery, characterized in that, include: Based on the vehicle status information, determine whether the vehicle's low-voltage battery is depleted and whether the vehicle meets the conditions for charging the low-voltage battery. Determine the vehicle's entry and exit status; A power supply control switch is installed on the vehicle. When the power supply control switch is closed, the high-voltage system of the vehicle is normally enabled. When the switch is open, the high-voltage system is kept in a de-energized state. When the low-voltage battery is depleted, the vehicle meets the charging conditions, and the charging control switch is closed, if the vehicle is in the garage, the high-voltage system of the vehicle is controlled to directly charge the low-voltage battery; if the vehicle has left the garage, a charging request message is sent to the mobile terminal.

2. The intelligent charging method for low-voltage vehicle batteries according to claim 1, characterized in that, After sending the power request information to the mobile terminal, the method further includes: If the mobile terminal returns a power replenishment authorization message, the high-voltage system is enabled to replenish the low-voltage battery.

3. The intelligent charging method for low-voltage vehicle batteries according to claim 2, characterized in that, Enabling the high-voltage system to replenish the low-voltage battery further includes: Obtain the charging status information of the low-voltage battery and send the charging status information to the mobile terminal; Alternatively, if a power-stopping message is received from the mobile terminal, the high-voltage system is enabled to stop powering the low-voltage battery.

4. The intelligent charging method for low-voltage vehicle batteries according to claim 2, characterized in that, After enabling the high-voltage system to replenish the low-voltage battery, the system further includes: Obtain the charging duration of the low-voltage battery during this charging process; When the charging time reaches a preset time threshold, the high-voltage system is powered off to stop charging the low-voltage battery.

5. The intelligent charging method for low-voltage vehicle batteries according to claim 2, characterized in that, After enabling the high-voltage system to replenish the low-voltage battery, the system further includes: If a power supply control switch disconnect signal is received, the high-voltage system is powered down to stop supplying power to the low-voltage battery.

6. The intelligent charging method for low-voltage vehicle batteries according to claim 1, characterized in that, The vehicle status information includes low-voltage battery voltage information, high-voltage system status information, power battery charge information, vehicle ignition lock status information, vehicle speed information, handbrake status information, and gear position information. Based on the vehicle status information, it is determined whether the vehicle's low-voltage battery is depleted and whether the vehicle meets the conditions for recharging, including: If the voltage of the low-voltage battery is lower than a preset voltage threshold, then the low-voltage battery is determined to be depleted. If the vehicle's high-voltage system is fault-free, the power battery charge is greater than the preset charge threshold, the ignition lock is in the LOCK state, the vehicle speed is less than the preset vehicle speed threshold, the handbrake is engaged, and the gear is in neutral, then the vehicle is determined to meet the charging conditions; otherwise, the vehicle is determined not to meet the charging conditions.

7. A smart charging system for low-voltage vehicle batteries, characterized in that, include: High-voltage system; The vehicle terminal is used to determine whether the vehicle's low-voltage battery is depleted based on vehicle status information, and whether the vehicle meets the conditions for charging the low-voltage battery. The power supply control switch, when closed, enables the vehicle's high-voltage system to function normally, and when open, controls the high-voltage system to remain powered down. The vehicle monitoring platform is used to determine the vehicle's entry and exit status. When the low-voltage battery is depleted, the vehicle meets the charging conditions, and the charging control switch is closed, if the vehicle is in the garage entry state, the platform controls the vehicle's high-voltage system to directly charge the low-voltage battery. If the vehicle has left the garage, the platform sends a charging request to the mobile terminal.

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