Methods, devices, vehicles, and dielectrics for preventing low-voltage lithium batteries in automobiles from losing charge.

Abstract

This application relates to a method, apparatus, vehicle, and medium for preventing low-voltage lithium batteries in automobiles from running out of power. The method includes: activating the low-voltage lithium battery of a target vehicle; determining the vehicle's charging strategy; when the charging strategy is an external power system on-demand charging strategy, activating a preset solar power system via the low-voltage lithium battery, and charging the low-voltage lithium battery via the solar power system when the light intensity, the preset solar power system, and the low-voltage lithium battery voltage meet preset external charging conditions; when the charging strategy is an internal power system on-demand charging strategy, charging the low-voltage lithium battery via a low-voltage power management system and a preset timed inspection circuit; and stopping charging the low-voltage lithium battery when the preset charging completion conditions are met. This application, by utilizing an external or internal power system on-demand charging strategy to automatically charge the low-voltage lithium battery, greatly reduces the risk of continuous vehicle power consumption and meets the user's need for unlocking and powering on.

Description

Technical Field

[0001] This application relates to the field of automotive electronics and electrical technology, and in particular to a method, device, vehicle, and medium for preventing low-voltage lithium batteries from running out of power. Background Technology

[0002] Because low-voltage lithium batteries have a small capacity, they are prone to running out of power, which can affect the user's vehicle use. In order to meet the requirements of lightweight design and the user's ability to unlock the vehicle and connect to high voltage, the low-voltage lithium batteries need to be fully charged and not run out of power.

[0003] Repeated instances of low-voltage lithium batteries running out of power can damage the battery and significantly increase the user's vehicle operating costs. To address this issue, existing technology allows for the disconnection of the discharge circuit when the low-voltage lithium battery's power level is too low during vehicle use. This disconnection cuts off the battery's external output and prevents it from running out of power.

[0004] However, existing technology cannot guarantee the charge of the low-voltage lithium battery when the vehicle is parked for a long time, and cannot meet the requirements for unlocking and powering on. In addition, after the existing technology cuts off the external output of the low-voltage lithium battery, the vehicle's remote control function will be unusable, which is not conducive to users remotely controlling the vehicle and greatly affects the user's driving experience. This issue urgently needs to be resolved. Summary of the Invention

[0005] This application provides a method, device, vehicle, and medium for preventing low-voltage lithium batteries from running out of power in automobiles, in order to solve the problems of existing technologies where it is difficult to guarantee the power of low-voltage lithium batteries when the vehicle is parked for a long time, thus failing to meet the requirements for unlocking and powering on; in addition, existing technologies disable the vehicle's remote control function after cutting off the external output of the low-voltage lithium battery, which is not conducive to users remotely controlling the vehicle and greatly affects the user's driving experience.

[0006] The first aspect of this application provides a method for preventing low-voltage lithium batteries in automobiles from running out of power, comprising the following steps: waking up a low-voltage lithium battery in a target vehicle that is in a dormant state based on a preset wake-up strategy; determining the charging strategy of the target vehicle; when the charging strategy is an external power system on-demand charging strategy, waking up a preset solar power supply system through the low-voltage lithium battery, and when the light intensity of the target vehicle's environment, the preset solar power supply system, and the voltage of the low-voltage lithium battery meet preset external charging conditions, using the preset solar power supply system to charge the low-voltage lithium battery until the low-voltage lithium battery meets preset charging completion conditions, at which point charging of the low-voltage lithium battery stops; when the charging strategy is an internal power system on-demand charging strategy, charging the low-voltage lithium battery through the target vehicle's low-voltage power management system and a preset timed inspection circuit, and stopping charging of the low-voltage lithium battery when the low-voltage lithium battery meets the preset charging completion conditions.

[0007] Optionally, in one embodiment of this application, the method further includes: detecting the current discharge current of the low-voltage lithium battery, and waking up the low-voltage lithium battery and generating an abnormal power consumption signal when the current discharge current meets a preset current wake-up condition; waking up the low-voltage power management system through the low-voltage lithium battery, and using the low-voltage power management system to determine whether the low-voltage lithium battery is in a normal power consumption state based on the abnormal power consumption signal; if the low-voltage lithium battery is in the normal power consumption state, reminding the user to start the target vehicle through acoustic and / or optical means; if the low-voltage lithium battery is not in the normal power consumption state, identifying an abnormal power consumption unit based on the abnormal power consumption signal, and performing a reset / restart or power-off operation on the abnormal power consumption unit through a preset abnormal power consumption processing strategy.

[0008] Optionally, in one embodiment of this application, the step of replenishing the low-voltage lithium battery through the low-voltage power management system of the target vehicle and a preset timed inspection circuit, and stopping the replenishment of the low-voltage lithium battery when the preset replenishment completion condition is met, includes: constructing a timed inspection circuit for the target vehicle based on a preset current sensor, anti-reverse diode, voltage stabilizing capacitor, and clock unit; acquiring the current temperature information of the environment of the target vehicle, and querying the state of charge threshold corresponding to the current temperature information according to a preset replenishment capacity assignment table; and acquiring the current temperature information through the timed inspection circuit. The current state of charge (SOC) of the low-voltage lithium battery is monitored, and when the current SOC is less than the SOC threshold, a recharge request message for the low-voltage lithium battery is generated and sent to the low-voltage power management system. The low-voltage power management system then invokes a high-voltage power-on strategy based on the recharge request message to recharge the low-voltage lithium battery. The system records the real-time SOC and recharge duration of the low-voltage lithium battery, and stops recharging the low-voltage lithium battery when the real-time SOC is greater than the SOC threshold or the recharge duration is greater than a preset duration threshold.

[0009] Optionally, in one embodiment of this application, after stopping the recharging of the low-voltage lithium battery, the method further includes: detecting the voltage and state of charge of the low-voltage lithium battery after recharging, and determining whether the low-voltage lithium battery meets a preset recharging failure condition based on the voltage and state of charge after recharging, wherein if the low-voltage lithium battery meets the preset recharging failure condition, the method controls the low-voltage lithium battery to perform a dormancy or periodically send a recharging signal operation to recharge the low-voltage lithium battery.

[0010] Optionally, in one embodiment of this application, after recharging the low-voltage lithium battery, the method further includes: when the recharged low-voltage lithium battery still meets the preset recharge failure condition, and the state of charge of the low-voltage lithium battery is less than or equal to a preset minimum safety threshold, generating a low-power signal and sending the low-power signal to the low-voltage power management system through the low-voltage lithium battery; based on the low-power signal, the low-voltage power management system collects the gear position information, vehicle function execution information, and vehicle speed information of the target vehicle, and determines whether the low-voltage lithium battery meets the preset low-power state through the gear position information, the vehicle function execution information, the vehicle speed information, and the preset low-power condition; wherein, if the low-voltage lithium battery meets the preset low-power state, a low-power command is sent to the low-voltage lithium battery through the low-voltage power management system; checking whether the low-voltage lithium battery receives the low-power command to generate a command reception result, and performing corresponding low-power operations according to the command reception result.

[0011] A second aspect of this application provides a device for preventing low-voltage lithium batteries in automobiles from running out of power, comprising: a first wake-up module, configured to wake up a low-voltage lithium battery of a target vehicle in a dormant state based on a preset wake-up strategy; an external charging module, configured to determine the charging strategy of the target vehicle, wherein when the charging strategy is an external power system on-demand charging strategy, a preset solar power supply system is woken up through the low-voltage lithium battery, and the preset external charging conditions are met by the light intensity of the environment where the target vehicle is located, the preset solar power supply system, and the voltage of the low-voltage lithium battery, and the preset external charging conditions are met, the preset solar power supply system is used to charge the low-voltage lithium battery until the low-voltage lithium battery meets the preset charging completion conditions, at which point the charging of the low-voltage lithium battery is stopped; and an internal charging module, configured to charge the low-voltage lithium battery through the low-voltage power management system of the target vehicle and a preset timed inspection circuit when the charging strategy is an internal power system on-demand charging strategy, and to stop charging the low-voltage lithium battery when the low-voltage lithium battery meets the preset charging completion conditions.

[0012] Optionally, in one embodiment of this application, it further includes: a detection module, configured to detect the current discharge current of the low-voltage lithium battery, and wake up the low-voltage lithium battery and generate an abnormal power consumption signal when the current discharge current meets a preset current wake-up condition; a second wake-up module, configured to wake up the low-voltage power management system through the low-voltage lithium battery, and use the low-voltage power management system to determine whether the low-voltage lithium battery is in a normal functional power consumption state based on the abnormal power consumption signal; a reminder module, configured to remind the user to start the target vehicle through acoustic and / or optical means if the low-voltage lithium battery is in the normal functional power consumption state; and a processing module, configured to determine an abnormal power consumption unit based on the abnormal power consumption signal if the low-voltage lithium battery is not in the normal functional power consumption state, and perform a reset / restart or power-off operation on the abnormal power consumption unit through a preset abnormal power consumption processing strategy.

[0013] Optionally, in one embodiment of this application, the internal charging module includes: a construction unit, configured to construct a timed inspection circuit for the target vehicle based on a preset current sensor, anti-reverse diode, voltage stabilizing capacitor, and clock unit; a query unit, configured to obtain the current temperature information of the environment of the target vehicle and query the state of charge threshold corresponding to the current temperature information according to a preset charging capacity assignment table; a sending unit, configured to obtain the current state of charge of the low-voltage lithium battery through the timed inspection circuit, and generate a charging request message for the low-voltage lithium battery when the current state of charge is less than the state of charge threshold, and send the charging request message to the low-voltage power management system; and a recording unit, configured to call a high-voltage power-on strategy according to the charging request message through the low-voltage power management system to charge the low-voltage lithium battery using the high-voltage power-on strategy, and record the real-time state of charge and charging duration of the low-voltage lithium battery, and stop charging the low-voltage lithium battery when the real-time state of charge is greater than the state of charge threshold or the charging duration is greater than a preset duration threshold.

[0014] Optionally, in one embodiment of this application, it further includes: a first judgment module, configured to detect the voltage and state of charge of the low-voltage lithium battery after the charging of the low-voltage lithium battery is stopped, and to determine whether the low-voltage lithium battery meets the preset charging failure condition based on the voltage and state of charge after the charging, wherein if the low-voltage lithium battery meets the preset charging failure condition, the module controls the low-voltage lithium battery to perform a hibernation or periodically send charging signal operation to recharge the low-voltage lithium battery.

[0015] Optionally, in one embodiment of this application, it further includes: a generation module, configured to generate a low-power signal when, after recharging the low-voltage lithium battery, the recharged low-voltage lithium battery still meets the preset recharging failure condition and the state of charge of the low-voltage lithium battery is less than or equal to a preset minimum safety threshold, and send the low-power signal to the low-voltage power management system through the low-voltage lithium battery; a second judgment module, configured to, based on the low-power signal, cause the low-voltage power management system to collect the gear position information, vehicle function execution information, and vehicle speed information of the target vehicle, and determine whether the low-voltage lithium battery meets the preset low-power state through the gear position information, the vehicle function execution information, the vehicle speed information, and the preset low-power condition, wherein, if the low-voltage lithium battery meets the preset low-power state, a low-power command is sent to the low-voltage lithium battery through the low-voltage power management system; and an execution module, configured to check whether the low-voltage lithium battery receives the low-power command, generate a command reception result, and execute the corresponding low-power operation according to the command reception result.

[0016] A third aspect of this application provides a vehicle, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method for preventing the low-voltage lithium battery of an automobile as described in the above embodiments.

[0017] A fourth aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method for preventing the discharge of a low-voltage lithium battery in an automobile.

[0018] Therefore, the embodiments of this application have the following beneficial effects:

[0019] This application's embodiments can wake up the low-voltage lithium battery of a target vehicle in a dormant state based on a preset wake-up strategy; determine the target vehicle's charging strategy; when the charging strategy is an external power system on-demand charging strategy, the preset solar power supply system is woken up through the low-voltage lithium battery, and when the light intensity of the target vehicle's environment, the preset solar power supply system, and the low-voltage lithium battery voltage meet preset external charging conditions, the preset solar power supply system charges the low-voltage lithium battery until the low-voltage lithium battery meets the preset charging completion conditions, at which point charging stops; when the charging strategy is an internal power system on-demand charging strategy, the low-voltage lithium battery is charged through the target vehicle's low-voltage power management system and a preset timed inspection circuit, and charging stops when the low-voltage lithium battery meets the preset charging completion conditions. This application, by utilizing an external or internal power system on-demand charging strategy to automatically charge the low-voltage lithium battery, greatly reduces the risk of continuous vehicle power consumption and meets the user's need for unlocking and powering on. This solves the problems of existing technologies that cannot guarantee the power of low-voltage lithium batteries when the vehicle is parked for a long time, thus failing to meet the requirements for unlocking and powering on; in addition, existing technologies cannot use the vehicle's remote control function after cutting off the external output of low-voltage lithium batteries, which is not conducive to users remotely controlling the vehicle and greatly affects the user's driving experience.

[0020] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0022] Figure 1 This is a flowchart illustrating a method for preventing low-voltage lithium batteries in automobiles from losing power, according to an embodiment of this application.

[0023] Figure 2A schematic diagram of a low-voltage lithium battery on-demand power replenishment judgment process is provided as an embodiment of this application;

[0024] Figure 3 A schematic diagram of a low-voltage lithium battery timed inspection and recharging circuit is provided as an embodiment of this application;

[0025] Figure 4 A schematic diagram of a low-voltage lithium battery current detection circuit is provided as an embodiment of this application;

[0026] Figure 5 This is an example diagram of a device for preventing the discharge of a low-voltage lithium battery in an automobile according to an embodiment of this application;

[0027] Figure 6 This is a schematic diagram of the vehicle structure provided in an embodiment of this application.

[0028] Among them, 10-a device for preventing power loss of automotive low-voltage lithium batteries; 100-first wake-up module, 200-external power replenishment module, 300-internal power replenishment module; 601-memory, 602-processor, 603-communication interface. Detailed Implementation

[0029] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0030] The following description, with reference to the accompanying drawings, outlines a method, apparatus, vehicle, and medium for preventing low-voltage lithium batteries in automobiles from running out of power. Addressing the problems mentioned in the background section, this application provides a method for preventing low-voltage lithium batteries in automobiles from running out of power. In this method, a low-voltage lithium battery in a target vehicle, currently in a dormant state, is awakened based on a preset wake-up strategy. A charging strategy for the target vehicle is determined. When the charging strategy is an external power system on-demand charging strategy, a preset solar power system is awakened via the low-voltage lithium battery. When the light intensity of the target vehicle's environment, the preset solar power system, and the low-voltage lithium battery voltage meet preset external charging conditions, the preset solar power system charges the low-voltage lithium battery until the low-voltage lithium battery meets preset charging completion conditions, at which point charging stops. When the charging strategy is an internal power system on-demand charging strategy, the low-voltage lithium battery is charged via the target vehicle's low-voltage power management system and a preset timed inspection circuit. Charging stops when the low-voltage lithium battery meets preset charging completion conditions. This application utilizes an on-demand power replenishment strategy from an external or internal power system to automatically recharge the low-voltage lithium battery, significantly reducing the risk of continuous vehicle power consumption and meeting the user's need for unlocking and powering on. This solves the problems of existing technologies where it is difficult to guarantee the low-voltage lithium battery's charge level when the vehicle is parked for extended periods, thus failing to meet the unlocking and power-on requirements; furthermore, existing technologies disable the vehicle's remote control functions after cutting off the low-voltage lithium battery's external output, hindering remote vehicle control and significantly impacting the user's driving experience.

[0031] Specifically, Figure 1 This is a flowchart illustrating a method for preventing the discharge of a low-voltage lithium battery for automobiles, provided as an embodiment of this application.

[0032] like Figure 1 As shown, the method for preventing the low-voltage lithium battery of this vehicle from losing power includes the following steps:

[0033] In step S101, the low-voltage lithium battery of the target vehicle, which is in a dormant state, is woken up based on a preset wake-up strategy.

[0034] In step S102, the charging strategy for the target vehicle is determined. When the charging strategy is an external power system on-demand charging strategy, the preset solar power system is activated by the low-voltage lithium battery. When the light intensity of the target vehicle's environment, the preset solar power system, and the voltage of the low-voltage lithium battery meet the preset external charging conditions, the preset solar power system is used to charge the low-voltage lithium battery until the low-voltage lithium battery meets the preset charging completion conditions, at which point the charging of the low-voltage lithium battery is stopped.

[0035] Those skilled in the art should understand that after the target vehicle enters a dormant state, the low-voltage lithium battery also enters a dormant state simultaneously. In order to replenish the low-voltage lithium battery in a timely manner, the embodiments of this application can wake up the low-voltage lithium battery of the target vehicle in a dormant state through various wake-up methods such as abnormal current wake-up or wake-up from other wake-up sources, and wake it up to enter the working mode. If the low-voltage lithium battery cannot enter a dormant state and the low-voltage lithium battery charge continues to drop to the set replenishment threshold, the low-voltage lithium battery wakes up the vehicle's low-voltage power management system to report the replenishment demand.

[0036] When the target vehicle's current charging strategy is an external power system on-demand charging strategy, embodiments of this application can wake up the 12V solar power supply system through the vehicle's low-voltage power management system. When the 12V solar power supply system detects that the light intensity meets the external power output conditions, the low-voltage lithium battery voltage is below 13V, and the 12V solar power supply system is fault-free, it performs a charging operation on the low-voltage lithium battery. Charging is complete when any of the following conditions are met, i.e., preset charging completion conditions, and then the charging of the low-voltage lithium battery stops:

[0037] 1. LBMS_SOC ≥ XX%.

[0038] 2. The charging time t ≥ XX min.

[0039] It should be noted that after the low-voltage lithium battery exits the charging process due to charging timeout, the low-voltage lithium battery judges the effect of this solar charging based on the increase or decrease of its power level. If the increase in the low-voltage lithium battery power level is less than the set threshold, the 12V solar charging will not be executed during the current sleep-wake cycle of the low-voltage lithium battery. Instead, the internal charging system power battery charging strategy will be executed. The specific execution process of this strategy will be described in detail below and will not be repeated here.

[0040] When the 12V solar charging system is unable to replenish the low-voltage lithium battery, the vehicle's low-voltage power management system calls the high-voltage power-on function to replenish the low-voltage lithium battery.

[0041] Therefore, the embodiments of this application can prioritize the on-demand power replenishment strategy through an external power system. When the low-voltage lithium battery is too low, the solar charging system is activated to replenish the low-voltage lithium battery, so that the low-voltage lithium battery is always in a state of sufficient power, thereby reducing the power consumption of the power battery and improving the vehicle's range.

[0042] Optionally, in one embodiment of this application, the method further includes: detecting the current discharge current of the low-voltage lithium battery, and waking up the low-voltage lithium battery and generating an abnormal power consumption signal when the current discharge current meets a preset current wake-up condition; waking up the low-voltage power management system through the low-voltage lithium battery, and using the low-voltage power management system to determine whether the low-voltage lithium battery is in a normal power consumption state based on the abnormal power consumption signal; if the low-voltage lithium battery is in a normal power consumption state, reminding the user to start the target vehicle through acoustic and / or optical means; if the low-voltage lithium battery is not in a normal power consumption state, identifying the abnormal power consumption unit based on the abnormal power consumption signal, and performing a reset, restart, or power-off operation on the abnormal power consumption unit through a preset abnormal power consumption processing strategy.

[0043] In actual implementation, when the low-voltage lithium battery enters sleep mode after the vehicle enters sleep mode, it will enter sleep mode simultaneously. The sleep mode retains the current detection function. The embodiments of this application can detect the current discharge current I of the low-voltage lithium battery in real time through the current acquisition module and determine whether the current discharge current meets the preset current wake-up condition. If the current discharge current I is greater than the set threshold for 3 seconds, the low-voltage lithium battery will be woken up and enter the working mode.

[0044] After entering the working mode, the low-voltage lithium battery wakes up the vehicle's low-voltage power management system and reports abnormal power consumption signals. The vehicle's low-voltage power management system can first detect whether the current power consumption belongs to normal function execution power consumption (i.e., whether it is in a normal function power consumption state) based on the abnormal power consumption signal. If it belongs to normal function execution power consumption, it can remind the user to start the vehicle as soon as possible through SMS reminders or other means to avoid continuous low-voltage power consumption leading to power depletion.

[0045] If the power consumption is abnormal, the embodiments of this application can locate the specific abnormal power consumption unit by detecting the abnormal wake-up signal, and reset the abnormal power consumption unit or reset and restart the abnormal power consumption unit by disconnecting and closing the power supply, so that the abnormal power consumption unit exits the abnormal power consumption state.

[0046] It should be noted that if resetting and restarting still cannot resolve the abnormal power consumption, the power supply to abnormal power consumption units that do not have memory function, are not safety components, do not have remote control function, or are not main control modules can be disconnected according to the graded power-off strategy to reduce abnormal power consumption and avoid low-voltage lithium battery depletion.

[0047] Therefore, the embodiments of this application monitor the current consumption of the whole vehicle after it goes into hibernation, so as to deal with the abnormal power consumption unit with abnormal current consumption fault in a timely manner, solve the power consumption problem from the source, reduce the abnormal power consumption current and continuous power consumption risk of the whole vehicle, and keep the low-voltage lithium battery in a state of sufficient power for a long time.

[0048] In step S103, when the power replenishment strategy is the internal power system on-demand power replenishment strategy, the low-voltage lithium battery is replenished through the target vehicle's low-voltage power management system and the preset timed inspection circuit, and the power replenishment of the low-voltage lithium battery is stopped when the low-voltage lithium battery meets the preset power replenishment completion conditions.

[0049] Furthermore, when the power replenishment strategy is an on-demand power replenishment strategy for the internal power system, the low-voltage lithium battery will continuously time in sleep mode. In embodiments of this application, when the clock unit reaches a set time, the low-voltage lithium battery will be woken up by the vehicle network to enter working mode to detect the calculation of LBMS_SOC. When it is detected that LBMS_SOC is lower than the set SOC threshold, LBMS_SOC, LBMS_MaxAllwChrgU, and LBMS_ReqChrgU messages are sent from the low-voltage lithium battery to the vehicle low-voltage power management system. Figure 2 As shown.

[0050] The vehicle can continuously replenish the low-voltage lithium battery while in operating mode. When the vehicle exits operating mode, if the low-voltage power management system detects that the LBMS_SOC is lower than the set SOC threshold, the high-voltage power battery system continues to maintain a high-voltage state to replenish the low-voltage lithium battery. The replenishment operation is completed and the replenishment of the low-voltage lithium battery stops when any of the above-mentioned replenishment completion conditions are met.

[0051] Therefore, the embodiments of this application replenish the low-voltage lithium battery with power through the on-demand replenishment strategy of the internal power system, thereby enriching the replenishment methods of low-voltage lithium batteries, greatly satisfying the power demand of low-voltage lithium batteries, and improving the safety and reliability of vehicles.

[0052] Optionally, in one embodiment of this application, the low-voltage lithium battery is recharged through the low-voltage power management system of the target vehicle and a preset timed inspection circuit, and the recharging of the low-voltage lithium battery is stopped when the low-voltage lithium battery meets the preset recharging completion conditions. This includes: constructing a timed inspection circuit for the target vehicle based on a preset current sensor, anti-reverse diode, voltage stabilizing capacitor, and clock unit; obtaining the current temperature information of the target vehicle environment, and querying the state of charge threshold corresponding to the current temperature information according to a preset recharging capacity assignment table; obtaining the current state of charge of the low-voltage lithium battery through the timed inspection circuit, and generating a recharging request message for the low-voltage lithium battery when the current state of charge is less than the state of charge threshold, and sending the recharging request message to the low-voltage power management system; calling the high-voltage power-on strategy through the low-voltage power management system according to the recharging request message to recharge the low-voltage lithium battery using the high-voltage power-on strategy, and recording the real-time state of charge and recharging duration of the low-voltage lithium battery, and stopping the recharging of the low-voltage lithium battery when the real-time state of charge is greater than the state of charge threshold or the recharging duration is greater than the preset duration threshold.

[0053] It should be noted that, in order to achieve the goal of on-demand recharging of low-voltage lithium batteries when their charge is low, the embodiments of this application construct a low-voltage lithium battery timed inspection and recharging circuit, such as... Figure 3 As shown, the low-voltage lithium battery timed inspection circuit mainly includes: a current detection circuit, a charging circuit, a battery status monitoring module, a battery control module, a clock unit, a chip power supply module, and a communication module. The current detection circuit consists of a current sensor, an anti-reverse diode, a voltage stabilizing capacitor, and a battery status monitoring module.

[0054] Specifically, embodiments of this application can utilize a low-voltage lithium battery state monitoring module to collect the current in the current detection circuit in real time through two chip interfaces, isense+ and isense-, such as... Figure 4 As shown; by detecting the voltage change across the current sensor, the current in the battery detection circuit can be obtained based on the internal resistance of the current sensor; the anti-reverse diode protects the current detection circuit from damage caused by external current backflow; the voltage stabilizing capacitor prevents voltage fluctuations and avoids affecting the detection accuracy; the clock unit continuously counts when the low-voltage lithium battery is in sleep mode, and wakes up the battery control module when t = XXh; the battery control module calculates LBMS_SOC based on the current fed back by the battery status monitoring module.

[0055] When the battery control module detects that the LBMS_SOC is lower than the set SOC (i.e., the state of charge threshold), it sends a charging request message (LBMS_ReChrgReq) to the external low-voltage power management system via its internal communication module to invoke the high-voltage power-on function to charge the low-voltage lithium battery. When the low-voltage power management system detects that the LBMS_SOC of the low-voltage lithium battery has reached the set SOC threshold for charging exit, or when the charging time t fed back by the clock unit is ≥ XX minutes, the low-voltage power management system determines that charging is complete, and the low-voltage lithium battery and the entire vehicle enter a dormant state.

[0056] As one possible approach, on-demand charging of low-voltage lithium batteries can determine whether charging is needed based on the battery's charge level. Since vehicles are used less frequently in low-temperature environments, the embodiments of this application can set the optimal charge threshold (i.e., state of charge threshold) for low-voltage lithium battery charging according to different scenarios to optimize charging frequency and reduce low-voltage power consumption.

[0057] In actual implementation, the embodiments of this application can first obtain the temperature information of the environment where the target vehicle is located, and use the vehicle power management system to query the built-in charging power assignment table to obtain the charging threshold (i.e., the state of charge threshold) corresponding to different temperatures. In this way, the charging threshold is adjusted by temperature to reduce the frequency of on-demand charging, so as to achieve earlier charging at low temperatures and reduce the charging frequency at normal and high temperatures.

[0058] Therefore, embodiments of this application employ an on-demand charging strategy for an internal power system and an adapted charging circuit to replenish the low-voltage lithium battery when its charge is too low through periodic checks. This timely replenishment ensures sufficient charge for the low-voltage lithium battery to meet the vehicle's low-voltage power requirements. While replenishing on demand, the replenishment threshold must also meet the power requirements for vehicle startup. Embodiments of this application calibrate the low-voltage lithium battery's replenishment threshold based on temperature. By continuously calibrating and lowering the replenishment threshold without affecting vehicle operation, the frequency of replenishment is reduced, avoiding battery degradation caused by frequent replenishment and improving the vehicle's range and user reliability.

[0059] Optionally, in one embodiment of this application, after stopping the charging of the low-voltage lithium battery, the method further includes: detecting the voltage and state of charge of the low-voltage lithium battery after charging, and determining whether the low-voltage lithium battery meets the preset charging failure condition based on the voltage and state of charge after charging. If the low-voltage lithium battery meets the preset charging failure condition, the method controls the low-voltage lithium battery to perform a hibernation or periodically send charging signal operation to recharge the low-voltage lithium battery.

[0060] Furthermore, embodiments of this application can detect the voltage and state of charge of the low-voltage lithium battery after recharging, thereby determining whether the low-voltage lithium battery meets the preset recharging failure conditions. When the low-voltage lithium battery fails to recharge, embodiments of this application can execute a sleep process on the low-voltage lithium battery. If sleep mode is not possible, the low-voltage lithium battery will be continuously woken up, and the low-voltage lithium battery can perform local timing, making a recharging request every Y minutes, up to a maximum of 5 times, to recharge the low-voltage lithium battery again.

[0061] Therefore, the embodiments of this application greatly improve the probability of successful charging after a failure to charge a low-voltage lithium battery by attempting to send charging signals a limited number of times. At the same time, limiting the number of charging requests effectively avoids the accelerated depletion of power caused by frequent charging requests.

[0062] Optionally, in one embodiment of this application, after recharging the low-voltage lithium battery, the method further includes: when the recharged low-voltage lithium battery still meets the preset recharging failure condition and the state of charge of the low-voltage lithium battery is less than or equal to a preset minimum safety threshold, generating a low-power signal and sending the low-power signal to the low-voltage power management system through the low-voltage lithium battery; based on the low-power signal, enabling the low-voltage power management system to collect the gear position information, vehicle function execution information, and vehicle speed information of the target vehicle, and determining whether the low-voltage lithium battery meets the preset low-power state through the gear position information, vehicle function execution information, vehicle speed information, and preset low-power conditions, wherein if the low-voltage lithium battery meets the preset low-power state, a low-power command is sent to the low-voltage lithium battery through the low-voltage power management system; checking whether the low-voltage lithium battery receives the low-power command to generate a command reception result, and performing the corresponding low-power operation according to the command reception result.

[0063] It should be noted that, if all the above-mentioned charging operations are successful and the low-voltage lithium battery charge is reduced to a low value (i.e., a preset minimum safety threshold), the embodiments of this application can send a low-power signal to the vehicle's low-voltage power supply system through the low-voltage lithium battery. This allows the vehicle's low-voltage power supply system to obtain the vehicle's gear position information, vehicle function execution information, and vehicle speed information based on the low-power signal, and to determine whether the low-voltage lithium battery can enter a low-power state based on the gear position information, vehicle function execution information, and vehicle speed information.

[0064] Furthermore, if the low-voltage lithium battery meets the preset low-power state, a low-power command is sent to the low-voltage lithium battery through the low-voltage power management system, and it is checked whether the low-voltage lithium battery has received the low-power command to generate a command reception result, thereby executing the corresponding low-power operation.

[0065] For example, when the vehicle is in packing mode or the vehicle speed is valid and less than a set value, and no safety functions are being executed, the vehicle's low-voltage power supply system can send a low-power command to the low-voltage lithium battery. After receiving the command, the low-voltage lithium battery will execute the low-power strategy. The vehicle's low-voltage power supply system will remind the user via SMS and App that the vehicle has entered a low-power state. When using the vehicle, the user needs to press and hold the tailgate switch to exit the low-power state and use the vehicle normally.

[0066] When the low-voltage lithium battery is at a low charge level and has not received a command from the vehicle's low-voltage power system to enter low power consumption mode, the low-voltage lithium battery continues to discharge, triggering its own low power consumption strategy. When the vehicle is in packing mode or the vehicle speed is valid and less than a set value, and no safety functions are being executed, the vehicle's low-voltage power system will notify the user via SMS and App that the vehicle has entered a low power consumption state. To exit the low power consumption state and use the vehicle normally, the user needs to press and hold the tailgate switch.

[0067] Therefore, in the embodiments of this application, when the low-voltage lithium battery has too low a charge and charging fails, a low-power strategy is implemented in the low-voltage lithium battery to save some charge in order to meet the vehicle's power requirements for starting the vehicle.

[0068] It is understood that the method for preventing low-voltage lithium batteries in automobiles according to the embodiments of this application monitors abnormal current in real time, handles abnormal power consumption in a timely manner, and supplements power as needed. When the low-voltage lithium battery has sufficient power, it provides low-voltage power, and the power battery does not discharge, thus ensuring the driving range. This effectively ensures that the low-voltage lithium battery has sufficient power and avoids the impact of low-voltage battery on the user's vehicle use.

[0069] The method for preventing low-voltage lithium batteries in automobiles according to the embodiments of this application involves waking up the low-voltage lithium battery of a target vehicle from a dormant state based on a preset wake-up strategy; determining the charging strategy of the target vehicle; and when the charging strategy is an external power system on-demand charging strategy, waking up a preset solar power supply system through the low-voltage lithium battery, and using the preset solar power supply system to charge the low-voltage lithium battery when the light intensity of the target vehicle's environment, the preset solar power supply system, and the low-voltage lithium battery voltage meet preset external charging conditions, until the low-voltage lithium battery meets the preset charging completion conditions, at which point charging of the low-voltage lithium battery stops; when the charging strategy is an internal power system on-demand charging strategy, charging of the low-voltage lithium battery is performed through the target vehicle's low-voltage power management system and a preset timed inspection circuit, and charging of the low-voltage lithium battery stops when the low-voltage lithium battery meets the preset charging completion conditions. This application, by utilizing an external or internal power system on-demand charging strategy to automatically charge the low-voltage lithium battery, greatly reduces the risk of continuous vehicle power consumption and meets the user's need for unlocking and powering on.

[0070] Secondly, with reference to the accompanying drawings, a device for preventing the discharge of a low-voltage lithium battery for automobiles according to an embodiment of this application is described.

[0071] Figure 5 This is a block diagram of a device for preventing the discharge of a low-voltage lithium battery in an automobile according to an embodiment of this application.

[0072] like Figure 5 As shown, the device 10 for preventing low-voltage lithium batteries in automobiles includes: a first wake-up module 100, an external power supply module 200, and an internal power supply module 300.

[0073] The first wake-up module 100 is used to wake up the low-voltage lithium battery of the target vehicle that is in a dormant state based on a preset wake-up strategy.

[0074] The external power supply module 200 is used to determine the power supply strategy of the target vehicle. When the power supply strategy is the external power system on-demand power supply strategy, the preset solar power supply system is activated through the low-voltage lithium battery. When the light intensity of the target vehicle's environment, the preset solar power supply system, and the voltage of the low-voltage lithium battery meet the preset external power supply conditions, the preset solar power supply system is used to supply power to the low-voltage lithium battery until the low-voltage lithium battery meets the preset power supply completion conditions, at which point the power supply to the low-voltage lithium battery is stopped.

[0075] The internal charging module 300 is used to charge the low-voltage lithium battery through the low-voltage power management system of the target vehicle and the preset timed inspection circuit when the charging strategy is the on-demand charging strategy of the internal power system, and to stop charging the low-voltage lithium battery when the low-voltage lithium battery meets the preset charging completion conditions.

[0076] Optionally, in one embodiment of this application, the device 10 for preventing low-voltage lithium batteries in automobiles further includes: a detection module, a second wake-up module, a reminder module, and a processing module.

[0077] The detection module is used to detect the current discharge current of the low-voltage lithium battery, and when the current discharge current meets the preset current wake-up conditions, wake up the low-voltage lithium battery and generate an abnormal power consumption signal.

[0078] The second wake-up module is used to wake up the low-voltage power management system through the low-voltage lithium battery, and use the low-voltage power management system to determine whether the low-voltage lithium battery is in a normal power consumption state based on the abnormal power consumption signal.

[0079] The reminder module is used to remind the user to start the target vehicle via acoustic and / or optical means if the low-voltage lithium battery is in a normal functional power consumption state.

[0080] The processing module is used to identify abnormal power consumption units based on abnormal power consumption signals if the low-voltage lithium battery is not in a normal power consumption state, and to perform reset, restart or power-off operations on the abnormal power consumption units according to the preset abnormal power consumption processing strategy.

[0081] Optionally, in one embodiment of this application, the internal power replenishment module 300 includes: a construction unit, a query unit, a sending unit, and a recording unit.

[0082] The construction unit is used to construct a timed inspection circuit for the target vehicle based on a preset current sensor, anti-reverse diode, voltage stabilizing capacitor and clock unit.

[0083] The query unit is used to obtain the current temperature information of the target vehicle's environment and query the state of charge threshold corresponding to the current temperature information according to the preset power replenishment value table.

[0084] The sending unit is used to obtain the current state of charge of the low-voltage lithium battery through the timed inspection circuit, and when the current state of charge is less than the state of charge threshold, generate a charging request message for the low-voltage lithium battery and send the charging request message to the low-voltage power management system.

[0085] The recording unit is used to call the high-voltage power-on strategy according to the power replenishment request message through the low-voltage power management system, so as to replenish the low-voltage lithium battery using the high-voltage power-on strategy, and record the real-time state of charge and replenishment duration of the low-voltage lithium battery. When the real-time state of charge is greater than the state of charge threshold or the replenishment duration is greater than the preset duration threshold, the replenishment of the low-voltage lithium battery is stopped.

[0086] Optionally, in one embodiment of this application, the device 10 for preventing low-voltage lithium battery discharge in automobiles further includes: a first judgment module, used to detect the voltage and state of charge of the low-voltage lithium battery after the charging is stopped, and to determine whether the low-voltage lithium battery meets the preset charging failure condition based on the voltage and state of charge. In the case that the low-voltage lithium battery meets the preset charging failure condition, the module controls the low-voltage lithium battery to perform a hibernation or periodically send a charging signal operation to recharge the low-voltage lithium battery.

[0087] Optionally, in one embodiment of this application, the device 10 for preventing low-voltage lithium batteries in automobiles further includes: a generation module, a second judgment module, and an execution module.

[0088] The generation module is used to generate a low-power signal when the low-voltage lithium battery still meets the preset charging failure conditions after being recharged and the state of charge of the low-voltage lithium battery is less than or equal to the preset minimum safety threshold. The low-power signal is then sent to the low-voltage power management system through the low-voltage lithium battery.

[0089] The second judgment module is used to enable the low-voltage power management system to collect the gear position information, vehicle function execution information and vehicle speed information of the target vehicle based on the low-power signal, and to determine whether the low-voltage lithium battery meets the preset low-power state through the gear position information, vehicle function execution information, vehicle speed information and preset low-power conditions. If the low-voltage lithium battery meets the preset low-power state, the low-voltage power management system sends a low-power command to the low-voltage lithium battery.

[0090] The execution module is used to check whether the low-voltage lithium battery has received a low-power command, generate a command reception result, and perform corresponding low-power operations based on the command reception result.

[0091] It should be noted that the explanation of the aforementioned method embodiment for preventing low-voltage lithium batteries in automobiles also applies to the device for preventing low-voltage lithium batteries in automobiles in this embodiment, and will not be repeated here.

[0092] The device for preventing low-voltage lithium batteries in automobiles according to the embodiments of this application includes a first wake-up module, used to wake up the low-voltage lithium battery of a target vehicle in a dormant state based on a preset wake-up strategy; an external charging module, used to determine the charging strategy of the target vehicle, and when the charging strategy is an external power system on-demand charging strategy, to wake up a preset solar power supply system through the low-voltage lithium battery, and to charge the low-voltage lithium battery using the preset solar power supply system when the light intensity of the target vehicle's environment, the preset solar power supply system, and the voltage of the low-voltage lithium battery meet the preset external charging conditions, until the low-voltage lithium battery meets the preset charging completion conditions, at which point the charging of the low-voltage lithium battery is stopped; and an internal charging module, used to charge the low-voltage lithium battery through the target vehicle's low-voltage power management system and a preset timed inspection circuit when the charging strategy is an internal power system on-demand charging strategy, and to stop charging the low-voltage lithium battery when the low-voltage lithium battery meets the preset charging completion conditions. This application utilizes an on-demand power replenishment strategy from an external or internal power system to automatically replenish the low-voltage lithium battery, greatly reducing the risk of continuous power consumption in the vehicle and meeting the user's need for unlocking and powering on.

[0093] Figure 6 A schematic diagram of the structure of a vehicle provided in an embodiment of this application. The vehicle may include:

[0094] The memory 601, the processor 602, and the computer program stored on the memory 601 and capable of running on the processor 602.

[0095] When the processor 602 executes the program, it implements the method for preventing the low-voltage lithium battery of an automobile provided in the above embodiments to prevent power loss.

[0096] Furthermore, the vehicle also includes:

[0097] Communication interface 603 is used for communication between memory 601 and processor 602.

[0098] The memory 601 is used to store computer programs that can run on the processor 602.

[0099] The memory 601 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.

[0100] If the memory 601, processor 602, and communication interface 603 are implemented independently, then the communication interface 603, memory 601, and processor 602 can be interconnected via a bus to complete communication between them. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of representation, Figure 6 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0101] Optionally, in a specific implementation, if the memory 601, processor 602, and communication interface 603 are integrated on a single chip, then the memory 601, processor 602, and communication interface 603 can communicate with each other through an internal interface.

[0102] The processor 602 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application.

[0103] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method for preventing the low-voltage lithium battery of an automobile from losing power.

[0104] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0105] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0106] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or N executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0107] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0108] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0109] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0110] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0111] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A method for preventing the discharge of a low-voltage lithium battery in an automobile, characterized in that, Includes the following steps: Based on a preset wake-up strategy, the low-voltage lithium battery of the target vehicle in a dormant state is woken up. The target vehicle's charging strategy is determined. When the charging strategy is an external power system on-demand charging strategy, the preset solar power system is activated through the low-voltage lithium battery. When the light intensity of the target vehicle's environment, the preset solar power system, and the voltage of the low-voltage lithium battery meet the preset external charging conditions, the preset solar power system is used to charge the low-voltage lithium battery until the low-voltage lithium battery meets the preset charging completion conditions, at which point the charging of the low-voltage lithium battery is stopped. When the power replenishment strategy is an on-demand power replenishment strategy for the internal power system, the low-voltage lithium battery is replenished through the low-voltage power management system of the target vehicle and the preset timed inspection circuit, and the power replenishment of the low-voltage lithium battery is stopped when the low-voltage lithium battery meets the preset power replenishment completion conditions. The process, including stopping the recharging of the low-voltage lithium battery, further includes: The voltage and state of charge of the low-voltage lithium battery after recharging are detected, and it is determined whether the low-voltage lithium battery meets the preset recharging failure condition based on the voltage and state of charge after recharging. If the low-voltage lithium battery meets the preset recharging failure condition, the low-voltage lithium battery is controlled to perform a sleep or periodically send a recharging signal operation to recharge the low-voltage lithium battery. After recharging the low-voltage lithium battery, the process also includes: When the low-voltage lithium battery still meets the preset charging failure condition after being recharged, and the state of charge of the low-voltage lithium battery is less than or equal to the preset minimum safety threshold, a low power signal is generated and sent to the low-voltage power management system through the low-voltage lithium battery. Based on the low-power signal, the low-voltage power management system collects the gear position information, vehicle function execution information and vehicle speed information of the target vehicle, and determines whether the low-voltage lithium battery meets the preset low-power state through the gear position information, the vehicle function execution information, the vehicle speed information and the preset low-power conditions. If the low-voltage lithium battery meets the preset low-power state, the low-voltage power management system sends a low-power command to the low-voltage lithium battery. Check whether the low-voltage lithium battery has received the low-power command, generate a command reception result, and perform the corresponding low-power operation according to the command reception result.

2. The method according to claim 1, characterized in that, Also includes: The current discharge current of the low-voltage lithium battery is detected, and if the current discharge current meets the preset current wake-up condition, the low-voltage lithium battery is woken up and an abnormal power consumption signal is generated. The low-voltage lithium battery wakes up the low-voltage power management system, and the low-voltage power management system uses the abnormal power consumption signal to determine whether the low-voltage lithium battery is in a normal power consumption state. If the low-voltage lithium battery is in the normal power consumption state, the user is alerted to start the target vehicle via acoustic and / or optical means; If the low-voltage lithium battery is not in the normal power consumption state, then the abnormal power consumption unit is determined according to the abnormal power consumption signal, and the abnormal power consumption unit is reset or powered off by a preset abnormal power consumption handling strategy.

3. The method according to claim 1, characterized in that, The step of replenishing the low-voltage lithium battery through the low-voltage power management system of the target vehicle and a preset timed inspection circuit, and stopping the replenishment of the low-voltage lithium battery when the preset replenishment completion condition is met, includes: Based on a preset current sensor, anti-reverse diode, voltage regulator capacitor and clock unit, a timed inspection circuit for the target vehicle is constructed. Obtain the current temperature information of the environment of the target vehicle, and query the state of charge threshold corresponding to the current temperature information according to the preset power replenishment value table; The current state of charge of the low-voltage lithium battery is obtained through the timed inspection circuit, and when the current state of charge is less than the state of charge threshold, a recharge request message for the low-voltage lithium battery is generated and sent to the low-voltage power management system. The low-voltage power management system invokes the high-voltage power-on strategy according to the power replenishment request message to replenish the low-voltage lithium battery. It records the real-time state of charge and replenishment duration of the low-voltage lithium battery. When the real-time state of charge is greater than the state of charge threshold or the replenishment duration is greater than the preset duration threshold, the replenishment of the low-voltage lithium battery is stopped.

4. A device for preventing the discharge of a low-voltage lithium battery in an automobile, characterized in that, include: The first wake-up module is used to wake up the low-voltage lithium battery of the target vehicle that is in a dormant state based on a preset wake-up strategy. An external power supply module is used to determine the power supply strategy of the target vehicle. When the power supply strategy is an on-demand power supply strategy of an external power system, the module wakes up the preset solar power supply system through the low-voltage lithium battery. When the light intensity of the target vehicle's environment, the preset solar power supply system, and the voltage of the low-voltage lithium battery meet the preset external power supply conditions, the module uses the preset solar power supply system to supply power to the low-voltage lithium battery until the low-voltage lithium battery meets the preset power supply completion conditions, at which point the power supply to the low-voltage lithium battery stops. An internal charging module is used to charge the low-voltage lithium battery through the low-voltage power management system of the target vehicle and a preset timed inspection circuit when the charging strategy is an on-demand charging strategy for the internal power system. When the low-voltage lithium battery meets the preset charging completion conditions, the charging of the low-voltage lithium battery is stopped. The device for preventing the low-voltage lithium battery of the vehicle also includes: The first judgment module is used to detect the voltage and state of charge of the low-voltage lithium battery after the charging is stopped, and to determine whether the low-voltage lithium battery meets the preset charging failure condition based on the voltage and state of charge. If the low-voltage lithium battery meets the preset charging failure condition, the module controls the low-voltage lithium battery to perform a sleep or periodically send a charging signal operation to recharge the low-voltage lithium battery. The device for preventing the low-voltage lithium battery of the vehicle also includes: The generation module is used to generate a low-power signal when, after the low-voltage lithium battery is recharged, the recharged low-voltage lithium battery still meets the preset recharge failure condition and the state of charge of the low-voltage lithium battery is less than or equal to a preset minimum safety threshold, and then sends the low-power signal to the low-voltage power management system through the low-voltage lithium battery. The second judgment module is used to enable the low-voltage power management system to collect the gear position information, vehicle function execution information and vehicle speed information of the target vehicle based on the low power signal, and to determine whether the low-voltage lithium battery meets the preset low power state through the gear position information, the vehicle function execution information, the vehicle speed information and the preset low power condition. If the low-voltage lithium battery meets the preset low power state, the low-voltage power management system sends a low power command to the low-voltage lithium battery. The execution module is used to check whether the low-voltage lithium battery has received the low-power command, generate a command reception result, and perform corresponding low-power operations based on the command reception result.

5. The apparatus according to claim 4, characterized in that, Also includes: The detection module is used to detect the current discharge current of the low-voltage lithium battery, and when the current discharge current meets the preset current wake-up conditions, wake up the low-voltage lithium battery and generate an abnormal power consumption signal. The second wake-up module is used to wake up the low-voltage power management system through the low-voltage lithium battery, and use the low-voltage power management system to determine whether the low-voltage lithium battery is in a normal power consumption state based on the abnormal power consumption signal. The reminder module is used to remind the user to start the target vehicle via acoustic and / or optical means if the low-voltage lithium battery is in the normal functional power consumption state; The processing module is used to determine the abnormal power consumption unit based on the abnormal power consumption signal if the low-voltage lithium battery is not in the normal power consumption state, and to perform a reset, restart or power-off operation on the abnormal power consumption unit through a preset abnormal power consumption processing strategy.

6. The apparatus according to claim 4, characterized in that, The internal power supply module includes: The construction unit is used to construct the timed inspection circuit of the target vehicle based on a preset current sensor, anti-reverse diode, voltage stabilizing capacitor and clock unit; The query unit is used to obtain the current temperature information of the environment of the target vehicle, and query the state of charge threshold corresponding to the current temperature information according to the preset power replenishment assignment table. The sending unit is configured to obtain the current state of charge of the low-voltage lithium battery through the timed inspection circuit, and when the current state of charge is less than the state of charge threshold, generate a charging request message for the low-voltage lithium battery and send the charging request message to the low-voltage power management system. The recording unit is used to invoke the high-voltage power-on strategy according to the power replenishment request message through the low-voltage power management system, so as to replenish the low-voltage lithium battery using the high-voltage power-on strategy, and record the real-time state of charge and replenishment duration of the low-voltage lithium battery, and stop replenishing the low-voltage lithium battery when the real-time state of charge is greater than the state of charge threshold or the replenishment duration is greater than the preset duration threshold.

7. A vehicle, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the program to implement the method for preventing power loss of a low-voltage lithium battery for automobiles as described in any one of claims 1-3.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to implement the method for preventing the low-voltage lithium battery of an automobile as described in any one of claims 1-3.

Images