Charging method, charging device, equipment and storage medium for auxiliary starting battery

Abstract

This application discloses a charging method, charging device, equipment, and storage medium for a starting assist battery, belonging to the field of vehicle control technology. The charging method for the starting assist battery includes: acquiring state information of the starting assist battery in the vehicle; determining the battery's charge level based on the state information; charging the starting assist battery according to a first charging voltage when the charge level is below a charge threshold; determining a second charging voltage based on the state information when the charge level reaches the charge threshold, wherein the second charging voltage is lower than the first charging voltage and higher than the rated voltage of the starting assist battery; and charging the starting assist battery according to the second charging voltage. By utilizing the starting assist battery's state information, this application can accurately determine the real-time charge level in the starting assist state, thereby achieving differentiated and precise charging control, which is beneficial for extending the battery life of the starting assist battery.

Description

Technical Field

[0001] This application relates to the field of vehicle control technology, and in particular to a charging method, charging device, equipment and storage medium for a start-up auxiliary battery. Background Technology

[0002] As the requirements for vehicle energy consumption limits continue to increase, vehicle energy management strategies are becoming increasingly important. Against this backdrop, the charging strategy for the start-up auxiliary battery, as a crucial component of vehicle energy management, is a key element in improving overall vehicle energy efficiency and meeting stringent energy consumption limits.

[0003] In related technologies, the charging strategy for low-voltage batteries usually adopts constant voltage charging method. For example, a DC-DC converter outputs a fixed voltage value higher than the rated voltage as the charging voltage, and maintains this charging voltage throughout the charging process to charge the start-up auxiliary battery.

[0004] However, constant-voltage charging has limitations in adapting to the real-time state of the starting auxiliary battery. For example, in scenarios involving frequent starts and stops, temperature fluctuations, and sudden changes in electrical load during vehicle operation, low-voltage charging cannot meet the real-time charging needs of the starting auxiliary battery. Furthermore, prolonged use of high-voltage charging can easily lead to overcharging, significantly shortening the battery life of the starting auxiliary battery. Summary of the Invention

[0005] This application provides a charging method, charging device, equipment, and storage medium for a startup auxiliary battery to solve the technical problems existing in related technologies. Specifically, it includes the following technical solutions.

[0006] In a first aspect, this application provides a charging method for a start-up assist battery, the method comprising: acquiring state information of a start-up assist battery in a vehicle; determining the charge level of the start-up assist battery based on the state information; charging the start-up assist battery according to a first charging voltage when the charge level is lower than a charge threshold; determining a second charging voltage based on the state information when the charge level reaches the charge threshold, wherein the second charging voltage is lower than the first charging voltage and higher than the rated voltage of the start-up assist battery; and charging the start-up assist battery according to the second charging voltage.

[0007] In some possible implementations, the state information includes the charge state, health state, and temperature of the environment in which the start-up auxiliary battery is located. Determining the second charging voltage based on the state information includes: if the accuracy of the charge state is greater than an accuracy threshold, determining the second charging voltage as a first preset voltage, the accuracy indicating the deviation between the charge state and the true value; if the accuracy of the charge state does not reach the accuracy threshold, determining the second charging voltage based on the charge state, the health state, and the temperature.

[0008] In some possible implementations, determining the second charging voltage based on the charge state, the health state, and the temperature includes: correcting the charge state based on the health state; and determining the second charging voltage based on the corrected charge state and the temperature.

[0009] In some possible implementations, determining the second charging voltage based on the corrected state of charge and the temperature includes: querying a mapping table based on the corrected state of charge and the temperature, and determining the second charging voltage based on the query result of the mapping table; wherein the mapping table is used to indicate the mapping relationship between different usage scenarios of the start-up auxiliary battery and different second charging voltages, and the usage scenarios are related to the corrected state of charge and the temperature.

[0010] In some possible implementations, the status information includes a first measured voltage of the startup auxiliary battery, and the method further includes: generating an abnormality warning message when the first measured voltage is less than a first voltage threshold, the abnormality warning message being used to indicate a voltage abnormality in the startup auxiliary battery.

[0011] In some possible implementations, charging the startup auxiliary battery according to the second charging voltage includes: adjusting the voltage value of the first charging voltage to the voltage value of the second charging voltage, and then charging the startup auxiliary battery with the voltage value of the second charging voltage; wherein the voltage change rate when adjusting the voltage value of the first charging voltage is less than a change rate threshold.

[0012] In some possible implementations, the method further includes: obtaining a second measured voltage of the start-up auxiliary battery after charging according to the second charging voltage; if the second measured voltage is continuously greater than a second voltage threshold for a preset time period, adjusting the second charging voltage to a second preset voltage, wherein the second preset voltage is greater than the rated voltage and less than the first charging voltage; and charging the start-up auxiliary battery according to the voltage value of the second preset voltage.

[0013] Secondly, this application provides a charging device for a start-up assist battery. The device includes an acquisition module, a determination module, and a charging module. The acquisition module is configured to acquire status information of the start-up assist battery in a vehicle. The determination module is configured to determine the charge level of the start-up assist battery based on the status information. The charging module is configured to charge the start-up assist battery according to a first charging voltage when the charge level is below a charge threshold, and to determine a second charging voltage based on the status information and charge the start-up assist battery according to the second charging voltage when the charge level reaches the charge threshold. The second charging voltage is less than the first charging voltage and higher than the rated voltage of the start-up assist battery.

[0014] In some possible implementations, the status information includes the charge state, health state, and temperature of the environment in which the start-up auxiliary battery is located. The charging module, when determining the second charging voltage based on the status information, is configured to: determine the second charging voltage as a first preset voltage if the accuracy of the charge state is greater than an accuracy threshold, wherein the accuracy is used to indicate the deviation between the charge state and the true value; and determine the second charging voltage based on the charge state, the health state, and the temperature if the accuracy of the charge state does not reach the accuracy threshold.

[0015] In some possible implementations, when the charging module determines the second charging voltage based on the charge state, the health state, and the temperature, it is configured to: correct the charge state based on the health state; and determine the second charging voltage based on the corrected charge state and the temperature.

[0016] In some possible implementations, when the charging module determines the second charging voltage based on the corrected state of charge and the temperature, it is configured to: query a mapping table based on the corrected state of charge and the temperature, and determine the second charging voltage based on the query result of the mapping table; wherein the mapping table is used to indicate the mapping relationship between different usage scenarios of the start-up auxiliary battery and different second charging voltages, and the usage scenarios are related to the corrected state of charge and the temperature.

[0017] In some possible implementations, the status information includes a first measured voltage of the start-up auxiliary battery, and the device further includes a warning module; the warning module is configured to generate abnormal warning information when the first measured voltage is less than a first voltage threshold, the abnormal warning information being used to indicate an abnormal voltage in the start-up auxiliary battery.

[0018] In some possible implementations, when the charging module charges the startup auxiliary battery according to the second charging voltage, it is configured to: adjust the voltage value of the first charging voltage to the voltage value of the second charging voltage, and then charge the startup auxiliary battery with the voltage value of the second charging voltage; wherein the voltage change rate when adjusting the voltage value of the first charging voltage is less than a change rate threshold.

[0019] In some possible implementations, the acquisition module is further configured to acquire a second measured voltage of the start-up auxiliary battery after it has been charged according to the second charging voltage; if the second measured voltage is continuously greater than a second voltage threshold for a preset period of time, adjust the second charging voltage to a second preset voltage, wherein the second preset voltage is greater than the rated voltage and less than the first charging voltage; and charge the start-up auxiliary battery according to the voltage value of the second preset voltage.

[0020] Thirdly, this application provides an electronic device for charging a start-up auxiliary battery, comprising: a memory storing at least one program instruction for charging the start-up auxiliary battery; and a processor, wherein when the program instruction is executed by the processor, it causes a vehicle to implement the method of the first aspect of this application or any possible implementation thereof.

[0021] Fourthly, this application provides a computer program (product) including computer program / instructions, which are executed by a processor to cause a vehicle to implement the method of the first aspect of this application or any possible implementation of the first aspect.

[0022] Fifthly, this application provides a computer-readable storage medium having stored thereon program instructions for charging a start-up auxiliary battery, which, when executed by one or more processors, cause a vehicle to implement the method of the first aspect of this application or any possible implementation thereof.

[0023] In a sixth aspect, this application provides a vehicle that includes the apparatus described in the second aspect of this application or any possible embodiment of the second aspect.

[0024] The beneficial effects of the technical solution provided in this application include at least the following:

[0025] The technical solution provided in this application, on the one hand, can accurately determine the real-time power level of the start-up auxiliary battery by obtaining its status information, which helps to avoid the risk of undercharging or overcharging. On the other hand, by designing differentiated charging strategies, such as using a fixed first charging voltage when the power level is below a power threshold, and determining a second charging voltage based on the status information of the start-up auxiliary battery when the power level reaches the power threshold, this application embodiment can take into account both the rapid charging needs at lower power levels and the safety adaptation needs at higher power levels, achieving differentiated and precise charging control across the entire power range, which helps to extend the battery life of the start-up auxiliary battery. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of an implementation scenario provided in the embodiments of this application;

[0028] Figure 2 This is a flowchart of the charging method for the startup auxiliary battery provided in the embodiments of this application;

[0029] Figure 3 This is a schematic diagram of the charging device for the start-up auxiliary battery provided in an embodiment of this application;

[0030] Figure 4 This is a schematic diagram of the structure of an electronic device for charging a startup auxiliary battery provided in an embodiment of this application. Detailed Implementation

[0031] 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.

[0032] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0033] Figure 1 This is a schematic diagram of an implementation scenario provided in an embodiment of this application. (Reference) Figure 1 The implementation scenarios provided in this application include a start-up auxiliary battery 11, a voltage conversion unit 12, a power battery 13, and a control unit 14.

[0034] The starting auxiliary battery 11, also known as a low-voltage battery, is used, but is not limited to, to start the engine in a vehicle, and to provide power to in-vehicle electrical equipment that uses low-voltage electricity, such as the in-vehicle entertainment system, ECU (electric control unit), sensors, lights, wipers, and central locking system. The voltage range of the low-voltage battery is, for example, 12V-24V.

[0035] The power battery 13, also known as a high-voltage battery, is used, but is not limited to, to provide a power source for the vehicle's drive motor to support vehicle operation, and to power electrical equipment that uses high-voltage electricity, such as air conditioning compressors and PTC (positive temperature coefficient) heaters. The voltage range of the high-voltage electricity is, for example, 200V-800V.

[0036] The voltage conversion unit 12 is used, but is not limited to, to convert the high-voltage electricity input to the power battery 13 into a low-voltage output, so that the starting auxiliary battery 11 can be charged via the low-voltage electricity, or power other electrical devices in the vehicle that use low-voltage electricity can be supplied via the low-voltage electricity. The voltage conversion unit 12 is, for example, a DC-DC converter or any other type of device that can realize high-low voltage DC-DC conversion, stably output target voltage, and has power regulation capability.

[0037] The control unit 14 is used, but not limited to, to monitor the status information of the start-up auxiliary battery 11 and to adjust the low voltage output of the voltage conversion unit 12 according to the working status of the start-up auxiliary battery 11 so that the low voltage output of the voltage conversion unit 12 matches the status information of the start-up auxiliary battery.

[0038] Optionally, the control unit 14 may be a terminal controller or a control system composed of multiple terminal controllers installed in the vehicle. For example, the control unit 14 may be a control system composed of an IBS (intelligent battery sensor), a BDC (body domain controller), and a VCU (vehicle controller unit). The IBS collects, but is not limited to, the status information of the start-up assist battery 11 and transmits this information to the BDC via wired or wireless communication. The BDC receives the status information transmitted by the IBS, performs preliminary analysis and filtering, and forwards the analyzed and filtered status information to the VCU, for example, sending some key information from the status information to the VCU. The VCU adjusts the low-voltage output of the voltage conversion unit 12 based on the status information forwarded by the BDC, so that the low-voltage output of the voltage conversion unit 12 matches the status information of the start-up assist battery.

[0039] The control unit 14 can also be a server, a server cluster consisting of multiple servers, or a cloud computing service center.

[0040] In some embodiments, the IBS includes a sensor and a data processing module. The sensor is used, but is not limited to, measuring information such as voltage, current, and temperature of the start-up auxiliary battery 11 to obtain measured voltage, measured current, and temperature of the start-up auxiliary battery 11. The data processing module is used, but is not limited to, performing preliminary processing on the measured voltage, measured current, and temperature of the start-up auxiliary battery 11 to obtain information such as SOC (stage of charge, also known as remaining charge percentage), SOH (stage of health, SOC), and SOC accuracy of the start-up auxiliary battery 11. In this case, the state information of the start-up auxiliary battery 11 can be the raw information such as measured voltage, measured current, and temperature of the start-up auxiliary battery 11, or it can be the pre-processed information such as SOC, SOH, and SOC accuracy. This application does not impose any limitations in this regard.

[0041] Those skilled in the art should understand that the above-described starting auxiliary battery 11, voltage conversion unit 12, power battery 13, and control unit 14 are merely examples. Other existing or future starting auxiliary batteries, voltage conversion units, power batteries, and control units that are applicable to this application should also be included within the scope of protection of this application, and are hereby incorporated by reference.

[0042] Figure 2 This is a flowchart of a charging method for a startup auxiliary battery provided in an embodiment of this application. This method can, for example, be... Figure 1The control unit shown performs the actions, and this application makes no limitations in this regard. See also Figure 2 The charging method for the start-up auxiliary battery provided in this application embodiment may include steps S210-S250.

[0043] Step S210: Obtain the status information of the vehicle's starter battery.

[0044] For example, the status information of the start-up auxiliary battery can be any type of information describing the energy storage status, health status, operating environment status, and charge / discharge capability status of the start-up auxiliary battery. The status information could be, for example, raw information such as measured voltage, measured current, and temperature obtained by measuring the voltage, current, and temperature of the start-up auxiliary battery using sensors; or, the status information could be information such as SOC, SOH, and the accuracy of SOC obtained after preliminary processing of the raw information such as measured voltage, measured current, and temperature; or, the status information could be, for example, raw information such as measured voltage, measured current, and temperature, as well as information such as the accuracy of SOC, SOH, and SOC. This application makes no limitations in this regard.

[0045] Step S220: Determine the power level of the auxiliary battery based on the status information.

[0046] Considering that in practical applications, the charging characteristics of the auxiliary starting battery may differ depending on its charge level, such as significant polarization, stable battery reactivity, or increased terminal voltage, different phenomena may occur. Therefore, the method provided in this application embodiment can monitor the charge level of the auxiliary starting battery in real time based on state information, thereby adaptively adjusting the charging strategy and improving the charging efficiency of the auxiliary starting battery.

[0047] Optionally, when the status information includes, for example, the measured voltage, measured current, and temperature of the start-up auxiliary battery, the method for determining the charge of the start-up auxiliary battery based on the status information includes, for example,: querying a pre-stored three-dimensional calibration curve of "temperature-open circuit voltage-SOC" based on the temperature and measured voltage of the start-up auxiliary battery to obtain an estimated SOC value; then, correcting the estimated SOC value based on the time integral of the measured current; and then determining the corrected SOC as the charge of the start-up auxiliary battery.

[0048] The "temperature-open-circuit voltage-SOC" three-dimensional calibration curve is used to indicate the data model that has been experimentally measured and stored in the vehicle's control unit in advance. Essentially, it represents the correspondence between the temperature, open-circuit voltage, and SOC of the auxiliary battery. It is used, but not limited to, to output a third parameter based on any two of the input parameters: temperature, open-circuit voltage, and SOC. The time integral of the measured current indicates the cumulative change in the charging and discharging current of the auxiliary battery per unit time, i.e., the actual amount of electricity charged or discharged. It is used, but not limited to, to dynamically compensate for the deviation between the estimated and actual SOC values, eliminating errors caused by factors such as battery polarization, instantaneous voltage fluctuations, and temperature drift in the initial SOC estimate obtained solely from the "temperature-open-circuit voltage-SOC" three-dimensional calibration curve.

[0049] When the status information includes SOC, SOH, and the accuracy of SOC, a method for determining the starting auxiliary battery capacity based on the status information may include, for example, determining the starting auxiliary battery capacity based on SOC.

[0050] Step S230: When the battery level is lower than the battery level threshold, charge the startup auxiliary battery according to the first charging voltage.

[0051] For example, the charge threshold is used to indicate a charge cutoff point determined based on the changing charging characteristics of the starter battery at different charge levels. This cutoff point needs to adapt to the dynamic changes in the polarization effect, reactivity, and overcharge risk of the starter battery. The first charging voltage is, for example, a fixed voltage value determined based on the charging characteristics of the starter battery when its charge level is below the charge threshold. This voltage is used, but is not limited to, to enable rapid charging of the starter battery when its charge level is below the charge threshold, thereby ensuring the stability of low-voltage electricity in the vehicle.

[0052] When the starting auxiliary battery's charge level falls below the charge threshold, the polarization effect within it becomes significant, allowing it to withstand a larger charging current. At this point, a first charging voltage of a fixed value can overcome the battery's polarization barrier, increasing the charging current density and rapidly replenishing the starting auxiliary battery's charge, thus restoring its power supply capability. Therefore, the first charging voltage value is, for example, a larger value within the safe charging voltage range of the starting auxiliary battery. The safe charging voltage range of the starting auxiliary battery and the value of the first charging voltage can be adjusted according to the actual application scenario, and this application does not impose any restrictions on either.

[0053] In step S240, when the power level reaches the power threshold, a second charging voltage is determined based on the status information. The second charging voltage is higher than the rated voltage of the start-up auxiliary battery.

[0054] Because starting auxiliary batteries of the same capacity exhibit different charging needs under different health states and operating environment conditions, and because the impact of differences in health state and operating environment conditions on charging safety, charging efficiency, and battery life is significantly amplified as the starting auxiliary battery's capacity increases, this application proposes a second charging voltage for the starting auxiliary battery after it reaches a capacity threshold, based on its status information. This allows for differentiated charging strategies for starting auxiliary batteries under different health and operating environment conditions, i.e., determining the second charging voltage based on the real-time status information of the starting auxiliary battery. This improves the adaptability of the charging strategy to the real-time status of the starting auxiliary battery, balancing charging efficiency, battery life, and system stability.

[0055] Considering that in practical applications, the accuracy of state information acquisition or measurement is easily affected by environmental interference, leading to fluctuations in the accuracy of state information. For example, frequent vehicle start-stop cycles can cause instantaneous changes in the measured current, and extreme temperature environments can interfere with sensor measurement accuracy. Therefore, the second charging voltage of the start-up auxiliary battery is designed differently for charge states with varying accuracies. This avoids the risk of overcharging / undercharging due to fluctuations in state information, while ensuring the charging efficiency and battery life of the start-up auxiliary battery. Accuracy indicates the deviation between the measured value and the true value of the charge state. Higher accuracy indicates a larger deviation from the true value, meaning the charge state is less reliable; lower accuracy indicates a smaller deviation from the true value, meaning the charge state is more reliable.

[0056] In some embodiments, the state information includes the charge state, health state, and temperature of the environment in which the auxiliary battery is located. Determining the second charging voltage based on the state information includes: if the accuracy of the charge state is greater than an accuracy threshold, determining the second charging voltage as a first preset voltage, where the accuracy indicates the deviation between the charge state and the true value; if the accuracy of the charge state does not reach the accuracy threshold, determining the second charging voltage based on the charge state, health state, and temperature. The voltage value of the first preset voltage can be adjusted according to the actual application scenario, and this application does not impose any restrictions on it. Similarly, the value of the accuracy threshold can be adjusted according to the actual application scenario, and this application does not impose any restrictions on it.

[0057] Furthermore, considering that in practical applications, when the health state of the auxiliary battery varies, there may be a deviation between the theoretical and actual values ​​of the charge state determined based on measured voltage, measured current, temperature, and other state information. Therefore, in some embodiments, the method for determining the second charging voltage based on the charge state, health state, and temperature includes, for example, correcting the charge state based on the health state; and determining the second charging voltage based on the corrected charge state and temperature. This significantly improves the compatibility of the second charging voltage with the actual SOC and health level of the auxiliary battery, avoiding overcharging / undercharging problems caused by SOC deviations, and ensuring the charging efficiency and battery life of the auxiliary battery.

[0058] Optionally, the method for determining the second charging voltage based on the corrected state of charge and temperature includes, for example, looking up a mapping table based on the corrected state of charge and temperature, and determining the second charging voltage based on the lookup result of the mapping table. The mapping table indicates the mapping relationship between different usage scenarios of the auxiliary starting battery and different second charging voltages, and the usage scenarios are related to the corrected state of charge and temperature. Table 1 is an exemplary mapping table; the method of looking up the mapping table based on the corrected state of charge and temperature will be further explained below in conjunction with Table 1:

[0059] Table 1

[0060]

[0061] As shown in Table 1, the mapping table includes two variable dimensions: SOC and temperature. Each variable dimension is divided into multiple interval nodes according to its corresponding value range. For example, the SOC value range of 0%-100% includes multiple SOC interval nodes such as 0%, 20%, 40%, 60%, 70%, 80%, 90%, and 100%. The temperature value range of -20℃-70℃ includes multiple temperature interval nodes such as -20℃, 0℃, 10℃, 20℃, 30℃, 40℃, 50℃, 60℃, and 70℃. Once the current corrected SOC and temperature of the auxiliary battery are determined, a unique second charging voltage can be determined in the mapping table based on the SOC interval node that is closest to the current corrected SOC of the auxiliary battery, and the temperature interval node that is closest to the current temperature of the auxiliary battery.

[0062] It should be noted that Table 1 is merely an example and not a limitation. The value range of the SOC variable dimension, the SOC interval node, the value range of the temperature variable dimension, the temperature interval node, and the corresponding second charging voltage index can be adjusted according to the actual application scenario. This application does not impose any restrictions in this regard.

[0063] Step S250: Charge the startup auxiliary battery according to the second charging voltage.

[0064] In some embodiments, the method of charging the startup auxiliary battery according to the second charging voltage includes, for example, adjusting the voltage value of the first charging voltage to the voltage value of the second charging voltage, and then charging the startup auxiliary battery at the voltage value of the second charging voltage.

[0065] In some embodiments, the rate of change of voltage when adjusting the voltage value of the first charging voltage is less than a rate of change threshold, so as to ensure a smooth transition of the charging voltage and avoid affecting the battery life of the auxiliary starting battery due to voltage sudden changes. The value of the rate of change of voltage can be adjusted according to the actual application scenario, and this application does not impose any restrictions in this regard.

[0066] When the starter battery is undercharged or overcharged, its lifespan is significantly shortened, its power supply capacity decreases, and it may even pose safety hazards, thus affecting the stability of vehicle operation. Therefore, monitoring for undercharging or overcharging of the starter battery is crucial to ensure it is in a safe and efficient charging state, extending its lifespan and providing continuous and stable energy support to the vehicle, preventing breakdowns or malfunctions of core equipment due to battery failure.

[0067] For example, when the status information includes the first measured voltage of the start-up auxiliary battery, the charging method for the start-up auxiliary battery provided in this application embodiment further includes: generating abnormal warning information when the first measured voltage is less than a first voltage threshold. The abnormal warning information is used to indicate an abnormal voltage in the start-up auxiliary battery, so as to trigger an emergency handling strategy in a timely manner, remind the driver or maintenance personnel to check the cause of the battery undercharging, and avoid the vehicle failing to start or the equipment power supply being interrupted due to the voltage being continuously too low. The abnormal warning information can be any type of information, such as visual information, auditory information, tactile information, etc., and this application does not impose any limitations in this regard.

[0068] Alternatively, when the starting auxiliary battery has a high charge level, the charging method for the starting auxiliary battery provided in this application embodiment further includes: obtaining a second measured voltage of the starting auxiliary battery after charging according to a second charging voltage; adjusting the second charging voltage to a second preset voltage when the second measured voltage is greater than a second voltage threshold and the duration of the second measured voltage being greater than the second voltage threshold is greater than a duration threshold; and charging the starting auxiliary battery according to the voltage value of the second preset voltage to quickly avoid the risk of overcharging and ensure the battery life of the starting auxiliary battery and the energy management efficiency of the vehicle. Wherein, the second preset voltage is greater than the rated voltage, and the voltage value of the second preset voltage is, for example, any value greater than the rated voltage within the safe charging voltage range of the starting auxiliary battery; this application does not impose any limitations in this regard.

[0069] The technical solution provided in this application, on the one hand, can accurately determine the real-time charge level of the start-up auxiliary battery by acquiring its status information, which helps to avoid the risk of undercharging or overcharging. On the other hand, by designing differentiated charging strategies, such as using a fixed first charging voltage when the charge level is below a threshold, and determining a second charging voltage based on the start-up auxiliary battery's status information when the charge level reaches the threshold, this application embodiment can take into account both the rapid charging needs in the low-charge stage and the safety adaptation needs in the medium-to-high-charge stage, achieving differentiated and precise charging control across the entire charge range, which helps to extend the battery life of the start-up auxiliary battery.

[0070] In some other possible implementations, this application also provides a charging device for starting an auxiliary battery. Figure 3 This is a schematic diagram of the charging device for the start-up auxiliary battery provided in an embodiment of this application. (Reference) Figure 3 The charging device for the vehicle start-up assist battery provided in this application embodiment includes an acquisition module 310, a determination module 320, and a charging module 330.

[0071] The acquisition module 310 is configured to acquire the status information of the starter battery in the vehicle.

[0072] The determination module 320 is configured to determine the charge level of the start-up auxiliary battery based on the status information.

[0073] The charging module 330 is configured to charge the startup auxiliary battery according to a first charging voltage when the battery level is below a battery level threshold; and to determine a second charging voltage according to status information when the battery level reaches the battery level threshold, and to charge the startup auxiliary battery according to the second charging voltage.

[0074] The second charging voltage is lower than the first charging voltage, and the second charging voltage is higher than the rated voltage of the starting auxiliary battery.

[0075] In some embodiments, the status information includes the charge state, health state, and temperature of the environment in which the auxiliary battery is located. The charging module 330 is configured to determine the second charging voltage based on the status information as follows: if the accuracy of the charge state is greater than an accuracy threshold, determine the second charging voltage as a first preset voltage, where the accuracy is used to indicate the deviation between the charge state and the true value; if the accuracy of the charge state does not reach the accuracy threshold, determine the second charging voltage based on the charge state, health state, and temperature.

[0076] In some embodiments, when determining the second charging voltage based on the charge state, health state, and temperature, the charging module 330 is configured to: correct the charge state based on the health state; and determine the second charging voltage based on the corrected charge state and temperature.

[0077] In some embodiments, when determining the second charging voltage based on the corrected state of charge and temperature, the charging module 330 is configured to: query a mapping table based on the corrected state of charge and temperature, and determine the second charging voltage based on the query result of the mapping table; wherein the mapping table is used to indicate the mapping relationship between different usage scenarios of the start-up auxiliary battery and different second charging voltages, and the usage scenarios are related to the corrected state of charge and temperature.

[0078] In some embodiments, the status information includes a first measured voltage of the startup auxiliary battery, and the device further includes a warning module; the warning module is configured to generate abnormal warning information when the first measured voltage is less than a first voltage threshold, the abnormal warning information being used to indicate an abnormal voltage in the startup auxiliary battery.

[0079] In some embodiments, when the charging module 330 charges the startup auxiliary battery according to the second charging voltage, it is configured to: adjust the voltage value of the first charging voltage to the voltage value of the second charging voltage, and then charge the startup auxiliary battery with the voltage value of the second charging voltage; wherein the voltage change rate when adjusting the voltage value of the first charging voltage is less than the change rate threshold.

[0080] In some possible implementations, the acquisition module 310 is further configured to acquire a second measured voltage of the start-up auxiliary battery after it has been charged according to the second charging voltage; if the second measured voltage is continuously greater than a second voltage threshold for a preset period of time, adjust the second charging voltage to a second preset voltage, wherein the second preset voltage is greater than the rated voltage and less than the first charging voltage; and charge the start-up auxiliary battery according to the voltage value of the second preset voltage.

[0081] It should be understood that the charging device for the starting auxiliary battery and the charging method for the starting auxiliary battery provided in the above embodiments belong to the same concept, and the specific implementation process can be found in the charging method for the starting auxiliary battery embodiments.

[0082] In some other possible implementations, this application also provides an electronic device for charging a startup auxiliary battery. Figure 4 This is a schematic diagram of the structure of an electronic device for controlling an on-board thermal management system provided in an embodiment of this application. See also... Figure 4 The electronic device for controlling the vehicle thermal management system provided in this application embodiment includes the following structure.

[0083] Memory 410 stores at least one program instruction for charging the start-up auxiliary battery. Processor 420 executes the aforementioned program instructions, causing the vehicle to achieve the above-mentioned combination. Figure 2The steps of the described method and its various embodiments are described below. Depending on the implementation, the processor 420 may be one or more types of processors, including but not limited to DSP (digital signal processor), ASIC (application-specific integrated circuit), FPGA (field-programmable gate array), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc., and the number of such devices may be determined according to actual needs.

[0084] In some other possible implementations, this application also provides a computer program (product) comprising computer programs / instructions, which are executed by a processor to enable the vehicle to achieve the above-described combination. Figure 2 The steps of the described method and its various embodiments.

[0085] In some other possible embodiments, this application also provides a computer-readable storage medium storing program instructions for charging a start-up auxiliary battery, which, when executed by one or more processors, cause the vehicle to achieve the above-mentioned combination. Figure 2 The steps of the described method and its various embodiments are described. The computer-readable storage medium can be a readable signal medium or a readable storage medium. A readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof.

[0086] In some other possible implementations, this application also provides a vehicle, the vehicle including Figure 3 The apparatus described in several embodiments thereof.

[0087] It should also be noted that the terms "first," "second," etc. (if applicable) in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0088] The term "and / or" in the embodiments of this application is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0089] The above description is only for the purpose of enabling those skilled in the art to understand the technical solution of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this application shall be included within the scope of protection of this application.

Claims

1. A method of charging a starting aid battery, characterized in that The method includes: Obtain the status information of the vehicle's starter battery; The charge level of the start-up auxiliary battery is determined based on the status information; If the battery level is lower than the battery level threshold, the startup auxiliary battery is charged according to the first charging voltage. If the power level reaches the power threshold, a second charging voltage is determined based on the status information. The second charging voltage is less than the first charging voltage and higher than the rated voltage of the start-up auxiliary battery. The start-up auxiliary battery is charged according to the second charging voltage; The status information includes charge status, health status, and the temperature of the surrounding environment; If the accuracy of the charge state is greater than the accuracy threshold, the second charging voltage is determined to be the first preset voltage, and the accuracy indicates the deviation of the charge state from the true value; If the accuracy of the charge state does not reach the accuracy threshold, the second charging voltage is determined based on the charge state, the health state, and the temperature.

2. The method according to claim 1, characterized in that, Determining the second charging voltage based on the charge state, the health state, and the temperature includes: The charge state is corrected based on the health status; The second charging voltage is determined based on the corrected charge state and the temperature.

3. The method according to claim 2, characterized in that, Determining the second charging voltage based on the corrected charge state and the temperature includes: The second charging voltage is determined by querying the mapping table based on the corrected charge state and the temperature, and based on the query result of the mapping table. The mapping table is used to indicate the mapping relationship between different usage scenarios of the start-up auxiliary battery and different second charging voltages, wherein the usage scenarios are related to the corrected state of charge and the temperature.

4. The method according to any one of claims 1-3, characterized in that, The status information also includes a first measured voltage of the start-up auxiliary battery, and the method further includes: If the first measured voltage is less than the first voltage threshold, an abnormal warning message is generated, which is used to indicate an abnormal voltage in the start-up auxiliary battery.

5. The method according to any one of claims 1-3, characterized in that, The step of charging the startup auxiliary battery according to the second charging voltage includes: After adjusting the voltage value of the first charging voltage to the voltage value of the second charging voltage, the starting auxiliary battery is charged with the voltage value of the second charging voltage. Wherein, the rate of change of voltage when adjusting the voltage value of the first charging voltage is less than the rate of change threshold.

6. The method according to any one of claims 1-3, characterized in that, The method further includes: Obtain the second measured voltage of the start-up auxiliary battery after it has been charged according to the second charging voltage; If the second measured voltage remains greater than the second voltage threshold for a preset duration, the second charging voltage is adjusted to a second preset voltage, wherein the second preset voltage is greater than the rated voltage and less than the first charging voltage; The start-up auxiliary battery is charged according to the voltage value of the second preset voltage.

7. A charging device for a starting auxiliary battery, characterized in that, The device includes an acquisition module, a determination module, and a charging module; The acquisition module is configured to acquire the status information of the starter battery in the vehicle; The determining module is configured to determine the charge level of the start-up auxiliary battery based on the status information; The charging module is configured to charge the startup auxiliary battery according to a first charging voltage when the battery level is lower than a battery level threshold. When the battery level reaches the battery threshold, a second charging voltage is determined based on the status information, and the startup auxiliary battery is charged according to the second charging voltage. Wherein, the second charging voltage is less than the first charging voltage, and the second charging voltage is higher than the rated voltage of the start-up auxiliary battery, and the status information includes charge status, health status and ambient temperature; If the accuracy of the charge state is greater than the accuracy threshold, the second charging voltage is determined to be the first preset voltage, and the accuracy indicates the deviation of the charge state from the true value; If the accuracy of the charge state does not reach the accuracy threshold, the second charging voltage is determined based on the charge state, the health state, and the temperature.

8. An electronic device, characterized in that, include: A memory, wherein the memory stores program instructions for charging the startup auxiliary battery; as well as, A processor, when the program instructions are executed by the processor, causes the vehicle to perform the method described in any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, A computer-readable storage medium stores program instructions for charging a start-up auxiliary battery, which, when executed by one or more processors, cause the vehicle to perform the method described in any one of claims 1-6.

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