Lithium-ion battery power generation control methods, systems, devices, and computer-readable storage media

Abstract

A lithium battery power generation control method, system, device, and computer-readable storage medium are disclosed, relating to the field of electrical control. Specifically, a target charge threshold corresponding to the current driving mode is determined based on real-time ambient temperature, current driving mode, parking air conditioning activation status, and battery health level; power generation control of the lithium battery is then performed based on the target charge threshold. This application avoids the poor adaptability of lithium battery power generation control under complex operating conditions.

Description

Technical Field

[0001] This application relates to the field of electrical control, specifically to a lithium battery power generation control method, system, device, and computer-readable storage medium. Background Technology

[0002] With the continuous development of automotive technology, the number of low-voltage electrical devices in vehicles is increasing, and the power supply reliability of low-voltage lithium batteries directly affects vehicle operation safety and user experience. For models with parking air conditioning, matching a large-capacity battery can dynamically adjust the alternator's operation, thereby achieving fuel savings. However, current automotive low-voltage lithium battery power generation control mostly adopts a fixed SOC (State of Charge) threshold strategy, considering only a single scenario dimension and failing to achieve multi-scenario collaborative adaptation. This results in poor adaptability under complex operating conditions, leading to problems such as low-temperature power loss, insufficient power supply at high temperatures, and high energy consumption at normal temperatures.

[0003] Therefore, how to avoid poor adaptability of lithium battery power generation control under complex operating conditions is an urgent problem to be solved. Summary of the Invention

[0004] This application provides a lithium battery power generation control method, system, device, and computer-readable storage medium, which can avoid the poor adaptability of lithium battery power generation control under complex operating conditions.

[0005] In a first aspect, embodiments of this application provide a lithium battery power generation control method, the lithium battery power generation control method comprising: The target battery level threshold corresponding to the current driving mode is determined based on real-time ambient temperature, current driving mode, parking air conditioning activation status, and battery health level. The lithium battery's power generation is controlled based on the target power threshold.

[0006] In conjunction with the first aspect, in one implementation, determining the target battery level threshold corresponding to the current driving mode based on real-time ambient temperature, current driving mode, parking air conditioning activation status, and battery health level includes: If the current driving mode is detected to be economy mode, the target battery threshold is determined based on the real-time ambient temperature, the activation status of the parking air conditioner, and the first preset temperature threshold. If the current driving mode is detected as the target power preservation mode, the target power threshold is determined based on the real-time ambient temperature, the activation status of the parking air conditioner, the battery health level, the first preset temperature threshold, the second preset temperature threshold, and the third preset temperature threshold. The first preset temperature threshold, the second preset temperature threshold, and the third preset temperature threshold are ordered from largest to smallest as follows: first preset temperature threshold, second preset temperature threshold, and third preset temperature threshold.

[0007] In conjunction with the first aspect, in one implementation, determining the target battery threshold based on real-time ambient temperature, the activation status of the parking air conditioner, and a first preset temperature threshold includes: If the real-time ambient temperature is lower than the first preset temperature threshold, then the first preset power threshold will be used as the target power threshold. If the real-time ambient temperature is not less than the first preset temperature threshold and the parking air conditioner is activated, then the second preset power threshold is used as the target power threshold, and the first preset power threshold is less than the second preset power threshold.

[0008] In conjunction with the first aspect, in one implementation, if the target power preservation mode is the first power preservation mode, the step of determining the target power threshold based on real-time ambient temperature, parking air conditioning activation status, battery health level, a first preset temperature threshold, a second preset temperature threshold, and a third preset temperature threshold includes: If the real-time ambient temperature is detected to be lower than the third preset temperature threshold, the target power threshold is determined based on the third preset power threshold and the battery health level. If the real-time ambient temperature is detected to be between the third preset temperature threshold and the second preset temperature threshold, the target power threshold is determined based on the fourth preset power threshold and the battery health level. If the real-time ambient temperature is detected to be between the second preset temperature threshold and the first preset temperature threshold, the target power threshold is determined based on the fifth preset power threshold and the battery health level. If the real-time ambient temperature is detected to be not less than the first preset temperature threshold and the parking air conditioner is activated, then the target battery threshold is determined based on the sixth preset battery threshold and the battery health level. The third, fourth, fifth, and sixth preset battery thresholds are ordered from largest to smallest as follows: third preset battery threshold, fourth preset battery threshold, fifth preset battery threshold, and sixth preset battery threshold.

[0009] In conjunction with the first aspect, in one embodiment, the battery health level includes a sub-health level and an aging level, and the step of determining the target power threshold based on a third preset power threshold and the battery health level includes: If the battery health level is sub-healthy, the target power threshold is determined based on the third preset power threshold and the first preset power increment. If the battery health level is aging level, the target power threshold is determined based on the third preset power threshold and the second preset power increment, where the second preset power increment is greater than the first preset power increment.

[0010] In conjunction with the first aspect, in one implementation, after the step of determining the target battery level threshold corresponding to the current driving mode based on the real-time ambient temperature, the current driving mode, the activation status of the parking air conditioning, and the battery health level, the method further includes: If the target vehicle is detected to meet the preset high-temperature operating conditions and the user has a habit of parking, the target vehicle will be controlled to adjust to the target battery level threshold for a preset time.

[0011] In conjunction with the first aspect, in one implementation, prior to the step of determining the target battery level threshold corresponding to the current driving mode based on real-time ambient temperature, current driving mode, parking air conditioning activation status, and battery health level, the method further includes: If the detected battery health level is not less than the first preset health status value, the battery health level is determined to be healthy. If the detected battery health level is not less than the second preset health status value and is greater than the first preset health status value, the battery level is determined to be sub-healthy. If the detected battery health level is lower than the second preset health status value, the battery level is determined to be the aging level, and the first preset health status value is greater than the second preset health status value.

[0012] Secondly, embodiments of this application provide a lithium battery power generation control system, the lithium battery power generation control system comprising: The first processing module is used to determine the target battery level threshold corresponding to the current driving mode based on the real-time ambient temperature, current driving mode, parking air conditioning activation status and battery health level. The second processing module is used to control the power generation of the lithium battery based on the target power threshold.

[0013] Thirdly, embodiments of this application provide a lithium battery power generation control device, which includes a processor, a memory, and a lithium battery power generation control program stored in the memory and executable by the processor. When the lithium battery power generation control program is executed by the processor, it implements the steps of the lithium battery power generation control method as described in any of the preceding claims.

[0014] Fourthly, embodiments of this application provide a computer-readable storage medium storing a lithium battery power generation control program, wherein when the lithium battery power generation control program is executed by a processor, it implements the steps of the lithium battery power generation control method as described in any of the preceding claims.

[0015] The beneficial effects of the technical solutions provided in this application include: By integrating multi-dimensional parameters such as real-time ambient temperature, current driving mode, parking air conditioning activation status, and battery health level, a target power threshold matching the current driving mode is dynamically determined, and power generation control of the lithium battery is performed based on the target power threshold. This application realizes the adaptive adjustment of the power generation control strategy with changes in the scenario, effectively solving the problems of poor scenario adaptability, insufficient power supply reliability, and high vehicle energy consumption caused by the fixed threshold strategy in the prior art. Attached Figure Description

[0016] Figure 1 This is a flowchart illustrating an embodiment of the lithium battery power generation control method of this application; Figure 2 This is a schematic diagram of the hardware structure of an embodiment of the lithium battery power generation control method of this application; Figure 3 This is a detailed flowchart illustrating an embodiment of the lithium battery power generation control method of this application; Figure 4 This is a schematic diagram of the hardware structure of the lithium battery power generation control device involved in the embodiments of this application. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0019] In a first aspect, embodiments of this application provide a lithium battery power generation control method.

[0020] In one embodiment, reference is made to Figure 1 , Figure 1 This is a flowchart illustrating an embodiment of the lithium battery power generation control method of this application. Figure 1 As shown, the lithium battery power generation control method includes: Step S10: Determine the target battery level threshold corresponding to the current driving mode based on the real-time ambient temperature, current driving mode, parking air conditioning activation status, and battery health level.

[0021] As an example, the hardware in this embodiment consists of an ambient temperature sensor installed in the front of the cab, a low-voltage lithium battery management system (BMS) installed on both sides of the vehicle frame, a generator installed on the engine, a generator controller (PCU) installed in the cab to control the generator control logic, an air conditioning controller (AC / C) that collects the parking air conditioning activation status signal, and a CAN (Controller Area Network) bus module that enables signal interaction between the modules. The PCU receives signals from each module via the CAN bus and collects multi-dimensional scene perception parameters in real time, including the real-time ambient temperature obtained by the temperature sensor, the current driving mode determined by the vehicle operating mode signal, the parking air conditioning activation status collected by the air conditioning controller, and the battery health level determined based on the battery health status (SOH) collected by the BMS.

[0022] It should be understood that the real-time ambient temperature is collected by a temperature sensor to characterize the external thermodynamic environment of the battery; the current driving mode is determined by receiving vehicle operating mode signals via the CAN bus to define the strategy guidance for vehicle operation; the parking air conditioning activation status is collected by the air conditioning controller to identify special high-load power consumption scenarios; the battery health level is determined based on the battery health status (SOH) collected by the BMS to assess the degree of battery aging; the acquisition cycle of all parameters is preferably 1 second to ensure real-time control; through the fusion of the above multi-parameters, the target charge threshold (i.e., the target SOC threshold) is adaptively adjusted according to the scenario, thereby overcoming the adaptability defects of the fixed threshold strategy under complex operating conditions.

[0023] Step S20: Control the power generation of the lithium battery based on the target power threshold.

[0024] As an example, in this embodiment, the current state of charge (SOC value) of the lithium battery is collected in real time, and the current SOC value is compared with a target SOC threshold. Based on the comparison result, a power generation control command is generated. When the current SOC value is lower than the target SOC threshold, the generator is started or its output power is increased to increase the charge. When the current SOC value reaches or exceeds the target SOC threshold, the generator is stopped or its output power is reduced to avoid overcharging. Through this closed-loop feedback regulation mechanism, the lithium battery charge is always maintained within a safe range near the target SOC threshold, ensuring a balance between power supply reliability and energy economy.

[0025] It should be noted that, referring to Figure 2As shown, the AC / C sensor collects information on the parking air conditioning status, the temperature sensor collects the ambient temperature, the BMS collects the SOH and SOC values, the navigation module collects the temperature of the next destination, and the onboard storage module collects user usage habits. These parameters are then input to the PCU for conditional judgment. The PCU dynamically determines the target battery level threshold based on these conditions, performs a comprehensive judgment, and outputs the result to the scene output mode. The scene output mode then determines the start / stop action of the generator based on the comparison between the target battery level threshold and the real-time SOC value. This entire process achieves lithium battery generator control based on driving environment, battery status, navigation, and user habits.

[0026] This application dynamically determines a target power threshold that matches the current driving mode by fusing multiple parameters, including real-time ambient temperature, current driving mode, parking air conditioning activation status, and battery health level. Based on the target power threshold, it controls the power generation of the lithium battery. This application achieves adaptive adjustment of the power generation control strategy according to changes in the scenario, effectively solving the problems of poor scenario adaptability, insufficient power supply reliability, and high vehicle energy consumption caused by the fixed threshold strategy in the prior art.

[0027] Further, in one embodiment, determining the target battery level threshold corresponding to the current driving mode based on real-time ambient temperature, current driving mode, parking air conditioning activation status, and battery health level includes: If the current driving mode is detected to be economy mode, the target battery threshold is determined based on the real-time ambient temperature, the activation status of the parking air conditioner, and the first preset temperature threshold. If the current driving mode is detected as the target power preservation mode, the target power threshold is determined based on the real-time ambient temperature, the activation status of the parking air conditioner, the battery health level, the first preset temperature threshold, the second preset temperature threshold, and the third preset temperature threshold. The first preset temperature threshold, the second preset temperature threshold, and the third preset temperature threshold are ordered from largest to smallest as follows: first preset temperature threshold, second preset temperature threshold, and third preset temperature threshold.

[0028] As an example, in the embodiments of this application, the specific values ​​of the first preset temperature threshold T1℃, the second preset temperature threshold T2℃, and the third preset temperature threshold T3℃ can be determined according to actual needs. It is sufficient that the first preset temperature threshold, the second preset temperature threshold, and the third preset temperature threshold are ordered from largest to smallest as follows: first preset temperature threshold, second preset temperature threshold, third preset temperature threshold. No limitation is made here. Specifically, the economic mode aims to prioritize the energy economy of the whole vehicle (prioritize energy consumption optimization, less power generation and more shutdown). The target power protection mode includes the first power protection mode (i.e., the regular power protection mode, prioritizing range protection, more power generation and less shutdown) and the second power protection mode (i.e., the deep power protection mode, prioritizing emergency backup and continuous power generation), which aims to prioritize the reliability of power supply.

[0029] It should be understood that the above mode dynamically determines the target battery threshold through a parameter fusion strategy of different dimensions. The specific control logic is as follows: if the current driving mode is detected to be the economy mode, the target battery threshold is determined by matching calculation based on the real-time ambient temperature, the activation status of the parking air conditioner, and the first preset temperature threshold; if the current driving mode is detected to be the target battery protection mode, the battery health level is further introduced as a compensation parameter, and multi-dimensional fine matching is performed based on the real-time ambient temperature, the activation status of the parking air conditioner, the first preset temperature threshold, the second preset temperature threshold, and the third preset temperature threshold. The first preset temperature threshold, the second preset temperature threshold, and the third preset temperature threshold are sorted from largest to smallest to divide different temperature ranges. The target battery threshold is corrected through the synergistic effect of multi-temperature range determination and battery health level compensation, thereby reducing the generator load to achieve energy saving in the economy mode and ensuring sufficient battery power under extreme conditions in the target battery protection mode through multi-parameter redundancy, thus achieving adaptive matching between driving strategy and power generation control.

[0030] Further, in one embodiment, determining the target battery threshold based on real-time ambient temperature, the activation status of the parking air conditioner, and a first preset temperature threshold includes: If the real-time ambient temperature is lower than the first preset temperature threshold, then the first preset power threshold will be used as the target power threshold. If the real-time ambient temperature is not less than the first preset temperature threshold and the parking air conditioner is activated, then the second preset power threshold is used as the target power threshold, and the first preset power threshold is less than the second preset power threshold.

[0031] In this exemplary embodiment, the specific values ​​of the first preset power threshold and the second preset power threshold can be determined according to actual needs, as long as the first preset power threshold is less than the second preset power threshold, which is not limited here; if the real-time ambient temperature is less than the first preset temperature threshold, it indicates that the current situation is a low-temperature scenario that requires compensation for battery activity, then the first preset power threshold is used as the target power threshold X1% to increase the charging upper limit; on this basis, it can also be combined with recent (e.g., 30 days) historical operating data and user driving habits for self-learning optimization, dynamically adjusting the target power threshold (e.g., adjusting ±3%) with an upper limit not exceeding 100%, to obtain a new The target battery capacity threshold is determined by the following: If the real-time ambient temperature is not lower than the first preset temperature threshold and the parking air conditioner is activated, it indicates that the current situation is a high-temperature, high-load scenario that requires long-term power supply. In this case, the second preset battery capacity threshold is used as the target battery capacity threshold multiplied by 2%. Based on this, the target battery capacity threshold can be dynamically adjusted (e.g., adjusted by ±3%) by combining the user's historical high-temperature parking time and power load data to obtain a new target battery capacity threshold. Through logical judgment of different condition branches, the target battery capacity threshold is accurately matched with the real-time operating conditions to ensure that the battery has sufficient energy reserves under low temperature or high load conditions, while avoiding unnecessary overcharging.

[0032] Further, in one embodiment, if the target power preservation mode is the first power preservation mode, the step of determining the target power threshold based on real-time ambient temperature, parking air conditioning activation status, battery health level, a first preset temperature threshold, a second preset temperature threshold, and a third preset temperature threshold includes: If the real-time ambient temperature is detected to be lower than the third preset temperature threshold, the target power threshold is determined based on the third preset power threshold and the battery health level. If the real-time ambient temperature is detected to be between the third preset temperature threshold and the second preset temperature threshold, the target power threshold is determined based on the fourth preset power threshold and the battery health level. If the real-time ambient temperature is detected to be between the second preset temperature threshold and the first preset temperature threshold, the target power threshold is determined based on the fifth preset power threshold and the battery health level. If the real-time ambient temperature is detected to be not less than the first preset temperature threshold and the parking air conditioner is activated, then the target battery threshold is determined based on the sixth preset battery threshold and the battery health level. The third, fourth, fifth, and sixth preset battery thresholds are ordered from largest to smallest as follows: third preset battery threshold, fourth preset battery threshold, fifth preset battery threshold, and sixth preset battery threshold.

[0033] As an example, in the embodiments of this application, the specific values ​​of the third preset power threshold, the fourth preset power threshold, the fifth preset power threshold, and the sixth preset power threshold can be determined according to actual needs, as long as they are ordered from largest to smallest as: the third preset power threshold, the fourth preset power threshold, the fifth preset power threshold, and the sixth preset power threshold, without limitation here; specifically, if the target power protection mode is the first power protection mode (normal power protection mode), the real-time ambient temperature is compared with the third preset temperature threshold, the second preset temperature threshold, and the first preset temperature threshold to determine the current temperature zone. When the real-time ambient temperature is less than the third preset temperature threshold, it indicates that the battery is in an extremely low temperature condition and its electrochemical activity is severely limited. Then, based on the third preset power threshold and combined with the battery health level, the target power threshold X3% is determined to compensate for the low-temperature activity loss; when the real-time ambient temperature is between the third preset temperature threshold and the second preset temperature threshold, it indicates that the battery is in a low-temperature condition and its usable capacity is slightly reduced. Then, based on the fourth preset power threshold and combined with the battery health level, the target power threshold X4% is determined.

[0034] It should be noted that when the real-time ambient temperature is between the second preset temperature threshold and the first preset temperature threshold, it indicates that the battery is operating at normal temperature and its performance is stable. In this case, the target charge threshold is determined by multiplying the fifth preset charge threshold by 5% based on the battery health level. When the real-time ambient temperature is not lower than the first preset temperature threshold and the parking air conditioner is activated, it indicates that the battery is operating under high temperature and high load conditions with a surge in heat dissipation and discharge demands. In this case, the target charge threshold is determined by multiplying the sixth preset charge threshold by 6% based on the battery health level. The above strategy establishes a mapping relationship between temperature ranges and basic charge thresholds, and superimposes compensation corrections based on battery health levels. This achieves dual adaptation based on battery physical characteristics and environmental load, avoiding start-up failures caused by poor activity at low temperatures, ensuring continuous power supply capability under high temperature and high load conditions, and eliminating the capacity decay effect caused by battery aging. This significantly improves the power supply reliability and energy economy throughout the entire temperature range and lifespan. It should be noted that the above preset temperature threshold settings are only a presentation of an example. More or fewer preset temperature thresholds can be set according to actual needs, which is not limited here.

[0035] It should be understood that if the target power protection mode is the second power protection mode (deep power protection mode), this mode focuses on power supply safety under extreme operating conditions; if the detected real-time ambient temperature is lower than the third preset temperature threshold, it indicates that the battery is in an extremely low temperature environment and its electrochemical activity is significantly reduced, then the target power threshold is determined by 7% based on the seventh preset power threshold and the battery health level to reserve sufficient starting energy; if the detected real-time ambient temperature is between the third and second preset temperature thresholds, it indicates that the battery is in a low temperature environment and its usable capacity is limited, then the target power threshold is determined by 8% based on the eighth preset power threshold and the battery health level; if the detected real-time ambient temperature is between the second and first preset temperature thresholds, it indicates that the battery is in a normal temperature environment and its performance is stable, then the target power threshold is determined by 9% based on the ninth preset power threshold and the battery health level; if the detected real-time ambient temperature is not lower than the first preset temperature threshold and the parking air conditioner is activated, it indicates that the battery is in a high temperature and high load environment and its discharge demand is surging, then the target power threshold is determined by X% based on the tenth preset power threshold and the battery health level. 10 %.

[0036] It should be understood that the core purpose of the second power supply mode, compared to the conventional power supply mode, is to ensure continuous power generation capacity and power supply security under extreme operating conditions. Therefore, a higher basic power threshold can be set to encourage the generator to work for longer periods. Specifically, the seventh, eighth, ninth, and tenth preset power thresholds correspond to the deep power supply basic thresholds for extremely low temperature, low temperature, normal temperature, and high temperature and high load scenarios, respectively. The seventh preset power threshold is higher than the third preset power threshold, the eighth preset power threshold is higher than the fourth preset power threshold, the ninth preset power threshold is higher than the fifth preset power threshold, and the tenth preset power threshold is higher than the sixth preset power threshold. This results in a higher frequency of generator start-up or a longer single-run duration under deep power supply mode, thereby achieving continuous power generation to cope with power consumption in scenarios where starting is difficult at low temperatures or prolonged parking at high temperatures. This achieves hierarchical differentiation between modes and reliable power supply under extreme scenarios.

[0037] It should be noted that in the deep power preservation mode, in addition to compensating for the power threshold through the health level, compensation can also be made based on the power lock status. Since the compensation method is the same under different temperature conditions, for the sake of simplicity, the scenario where the real-time ambient temperature is less than the third preset temperature threshold is used as an example for description: If the lithium battery is detected to be in a power lock state, it means that the battery's available capacity is limited and there is a risk of power depletion. Then, the target power threshold is further corrected based on the preset power lock compensation amount to obtain the corrected target power threshold, and the lithium battery's power generation is controlled according to the corrected target power threshold. By raising the target power threshold, the reduction in available capacity caused by power lock is offset, ensuring that the battery can still store enough absolute energy to support continuous power generation needs in the power lock state. The specific value of the preset power lock compensation amount can be adjusted according to the power lock ratio or safety strategy fed back by the battery management system, and is not limited here.

[0038] Further, in one embodiment, the battery health level includes a sub-health level and an aging level, and the step of determining the target battery threshold based on a third preset battery power threshold and the battery health level includes: If the battery health level is sub-healthy, the target power threshold is determined based on the third preset power threshold and the first preset power increment. If the battery health level is aging level, the target power threshold is determined based on the third preset power threshold and the second preset power increment, where the second preset power increment is greater than the first preset power increment.

[0039] In this embodiment, the specific values ​​of the second preset power increment and the first preset power increment can be determined according to actual needs, as long as the second preset power increment is greater than the first preset power increment, which is not limited here; for example, the second preset power increment can preferably be 10%, and the first preset power increment can preferably be 5%. The sub-health level in the battery health level indicates that the battery performance has initially deteriorated but has not yet reached a serious level, while the aging level indicates that the battery performance has significantly deteriorated and there is a high risk of power supply failure. The two are used to distinguish the degree of battery degradation in order to implement differentiated compensation. The specific control logic is as follows: if the battery health level is sub-healthy, the first preset power increment is added to the third preset power threshold to obtain the target power threshold; if the battery health level is aging, the second preset power increment is added to the third preset power threshold to obtain the target power threshold; by superimposing the power increment corresponding to the health level on the basic threshold, the reduction in the available battery capacity is compensated, ensuring that the degraded battery can still maintain sufficient reserve power, thereby improving the power supply reliability under different health states. It should be noted that the battery health level compensation strategy in other temperature ranges is the same as above, and will not be repeated here for the sake of simplicity.

[0040] Furthermore, in one embodiment, after the step of determining the target battery level threshold corresponding to the current driving mode based on the real-time ambient temperature, current driving mode, parking air conditioning activation status, and battery health level, the method further includes: If the target vehicle is detected to meet the preset high-temperature operating conditions and the user has a habit of parking, the target vehicle will be controlled to adjust to the target battery level threshold for a preset time.

[0041] In this embodiment, as an example, the preset high-temperature operating condition triggering condition is generated by the PCU by comparing the data collected by the real-time ambient temperature sensor and the destination ambient temperature prediction value provided by the navigation module with the preset high-temperature threshold. When the real-time temperature or the predicted temperature exceeds the preset high-temperature threshold (the specific value can be determined according to actual needs and is not limited here), it is determined that the condition is met. The user's parking habits are obtained by the PCU through the analysis of the vehicle's historical operating data collected by the vehicle storage module. Specifically, this includes statistically analyzing the frequency of parking periods and the average parking time under historical high-temperature conditions. When the parking period frequency exceeds the preset frequency and the average parking time exceeds the preset time (the specific value can be determined according to actual needs and is not limited here), it is determined that the user has parking habits. The accuracy and reliability of the triggering condition are ensured by multi-source data fusion.

[0042] It should be understood that if the target vehicle is detected to meet the preset high-temperature operating conditions and the user has a habit of parking, it means that the vehicle is about to enter a high-temperature environment and there will be a subsequent parking power demand. In this case, the target vehicle is controlled to adjust to the target power threshold for a preset time. Through this forward-looking power reserve control, power outages due to insufficient power are avoided after the parking air conditioner is turned on, ensuring user experience and power supply reliability in high-temperature scenarios, and achieving spatiotemporal matching between load demand and power generation strategy.

[0043] Furthermore, in one embodiment, before the step of determining the target battery level threshold corresponding to the current driving mode based on real-time ambient temperature, current driving mode, parking air conditioning activation status, and battery health level, the method further includes: If the detected battery health level is not less than the first preset health status value, the battery health level is determined to be healthy. If the detected battery health level is not less than the second preset health status value and is greater than the first preset health status value, the battery level is determined to be sub-healthy. If the detected battery health level is lower than the second preset health status value, the battery level is determined to be the aging level, and the first preset health status value is greater than the second preset health status value.

[0044] As an example, in the embodiments of this application, the specific values ​​of the first preset health status value and the second preset health status value can be determined according to actual needs. It is only necessary to satisfy that the first preset health status value is greater than the second preset health status value. There is no limitation here. For example, the first preset health status value can preferably be 80%, and the second preset health status value can preferably be 50%. It should be noted that the above setting of preset health status values ​​is only a presentation of the embodiment. It can also be divided into more or fewer levels of preset health status values ​​according to actual needs. There is no limitation here.

[0045] Specifically, if the detected battery health level is not less than the first preset health state value, it indicates that the battery's internal chemical activity is stable and its usable capacity is sufficient, and the battery health level is determined to be healthy. If the detected battery health level is less than the first preset health state value but not less than the second preset health state value, it indicates that the battery performance has initially deteriorated but is still within a safe range, and the battery health level is determined to be sub-healthy. If the detected battery health level is less than the second preset health state value, it indicates that the battery performance has significantly decreased and there is a high risk of power supply failure, and the battery health level is determined to be aging. By implementing a differentiated threshold compensation strategy through graded determination, it avoids overcharging losses of healthy batteries and ensures the absolute energy reserves of aging batteries, thereby improving the power supply reliability throughout the entire life cycle.

[0046] It should be noted that when the BMS built-in timing module detects that the self-calibration cycle has arrived, the BMS sends a self-calibration request to the PCU. During driving, the PCU controls the generator to start and continuously charge the low-voltage lithium battery until the battery level reaches 100% to complete the self-calibration. After the self-calibration is completed, the PCU controls the generator to stop generating electricity and resumes the power generation control logic of the normal scenario. At the same time, the target battery level threshold can also be optimized through self-learning during the self-calibration process. Specifically, this can be achieved by preferentially collecting the vehicle's historical operating data and user driving habit data from the past 30 days through the on-board storage module. The historical operating data covers changes in battery level, power generation duration, and electrical load in various scenarios, while user driving habits cover common operating modes, parking frequency, and preferences for electrical equipment. The generator controller PCU uses built-in algorithms to model and analyze the above data, and performs dynamic calibration on the basic battery level threshold for each scenario once a month. The calibration adjustment range is preferably controlled within ±2% to ±% to make the target battery level threshold adapt to the user's actual driving habits, thereby further improving scenario adaptability.

[0047] It should be understood that, with reference Figure 3As shown, the system first prioritizes the BMS self-calibration command. If the self-calibration cycle is detected, the PCU executes the generator start command, controls the generator to start, and continuously charges until the SOC reaches 100% to complete the battery capacity baseline correction. If the self-calibration command is not triggered, the system enters the main process. The system comprehensively collects multi-source data such as ambient temperature, SOH, SOC value, parking air conditioning status, temperature of the next target location, and user usage habits. The PCU judges the multi-dimensional scenario based on the collected data, identifies the current temperature range and load mode, and then the system enters the processing stage of scenario-specific SOC threshold matching + self-learning + load prediction + SOH compensation. Based on the basic threshold, various compensation values ​​are superimposed to finally obtain the target capacity threshold for each scenario, realizing adaptive matching of power generation strategy and complex operating conditions.

[0048] It should be noted that this application, through multi-scenario fusion sensing and hierarchical power status threshold dynamic adjustment, has the following advantages compared to existing fixed threshold strategies: (1) Improved adaptability across all scenarios: Real-time ambient temperature, current driving mode, and parking air conditioner activation status are accurately adapted to multiple scenarios, avoiding power loss in low temperatures, ensuring parking power supply in high temperatures, and optimizing energy consumption in normal temperatures, thus improving the reliability of vehicle operation across all scenarios by more than 30%. (2) Battery management accuracy optimization: The active self-calibration mechanism corrects the drift of the state of charge estimation, and the accuracy of the state of charge estimation is improved to within ±2%, extending the service life of low-voltage lithium batteries by more than 15%. (3) Balance between energy consumption and range: Differentiated threshold control by mode and temperature zone, while ensuring power supply, reduces the generator frequency, and reduces the energy consumption of the vehicle's low-voltage system by 8% to 12%; (4) Enhanced emergency response capability: The progressive control and power-locking compensation of the deep power protection mode ensure the basic power needs of the vehicle in extreme scenarios; (5) User experience optimization: Avoid problems such as parking air conditioner power loss and low temperature start failure, make generator start and stop more smoothly, reduce vehicle vibration and noise, and improve user comfort; (6) Enhanced optimization effects: The self-learning optimization of the power status threshold makes the threshold adaptable to the user's driving habits and historical operation data, improving the scene adaptability by more than 20%; by predicting the power consumption scene in advance, temporary power loss is avoided, and the power generation response speed is improved by 3 to 5 minutes; the battery health level compensation ensures that batteries in different health states can provide stable power supply, and the power supply reliability of aging batteries is improved by more than 15%; the three extended functions work together with the original control logic to further optimize energy consumption and user experience, while extending the battery life.

[0049] Secondly, embodiments of this application also provide a lithium battery power generation control system, which includes: The first processing module is used to determine the target battery level threshold corresponding to the current driving mode based on the real-time ambient temperature, current driving mode, parking air conditioning activation status and battery health level. The second processing module is used to control the power generation of the lithium battery based on the target power threshold.

[0050] Furthermore, in one embodiment, the first processing module is specifically used for: If the current driving mode is detected to be economy mode, the target battery threshold is determined based on the real-time ambient temperature, the activation status of the parking air conditioner, and the first preset temperature threshold. If the current driving mode is detected as the target power preservation mode, the target power threshold is determined based on the real-time ambient temperature, the activation status of the parking air conditioner, the battery health level, the first preset temperature threshold, the second preset temperature threshold, and the third preset temperature threshold. The first preset temperature threshold, the second preset temperature threshold, and the third preset temperature threshold are ordered from largest to smallest as follows: first preset temperature threshold, second preset temperature threshold, and third preset temperature threshold.

[0051] Furthermore, in one embodiment, the first processing module is specifically used for: If the real-time ambient temperature is lower than the first preset temperature threshold, then the first preset power threshold will be used as the target power threshold. If the real-time ambient temperature is not less than the first preset temperature threshold and the parking air conditioner is activated, then the second preset power threshold is used as the target power threshold, and the first preset power threshold is less than the second preset power threshold.

[0052] Furthermore, in one embodiment, if the target power-saving mode is the first power-saving mode, the first processing module is specifically used for: If the real-time ambient temperature is detected to be lower than the third preset temperature threshold, the target power threshold is determined based on the third preset power threshold and the battery health level. If the real-time ambient temperature is detected to be between the third preset temperature threshold and the second preset temperature threshold, the target power threshold is determined based on the fourth preset power threshold and the battery health level. If the real-time ambient temperature is detected to be between the second preset temperature threshold and the first preset temperature threshold, the target power threshold is determined based on the fifth preset power threshold and the battery health level. If the real-time ambient temperature is detected to be not less than the first preset temperature threshold and the parking air conditioner is activated, then the target battery threshold is determined based on the sixth preset battery threshold and the battery health level. The third, fourth, fifth, and sixth preset battery thresholds are ordered from largest to smallest as follows: third preset battery threshold, fourth preset battery threshold, fifth preset battery threshold, and sixth preset battery threshold.

[0053] Furthermore, in one embodiment, the battery health level includes a sub-health level and an aging level, and the first processing module is specifically used for: If the battery health level is sub-healthy, the target power threshold is determined based on the third preset power threshold and the first preset power increment. If the battery health level is aging level, the target power threshold is determined based on the third preset power threshold and the second preset power increment, where the second preset power increment is greater than the first preset power increment.

[0054] Furthermore, in one embodiment, the first processing module is specifically used for: If the target vehicle is detected to meet the preset high-temperature operating conditions and the user has a habit of parking, the target vehicle will be controlled to adjust to the target battery level threshold for a preset time.

[0055] Furthermore, in one embodiment, the first processing module is specifically used for: If the detected battery health level is not less than the first preset health status value, the battery health level is determined to be healthy. If the detected battery health level is not less than the second preset health status value and is greater than the first preset health status value, the battery level is determined to be sub-healthy. If the detected battery health level is lower than the second preset health status value, the battery level is determined to be the aging level, and the first preset health status value is greater than the second preset health status value.

[0056] This application dynamically determines a target power threshold that matches the current driving mode by fusing multiple parameters, including real-time ambient temperature, current driving mode, parking air conditioning activation status, and battery health level. Based on the target power threshold, it controls the power generation of the lithium battery. This application achieves adaptive adjustment of the power generation control strategy according to changes in the scenario, effectively solving the problems of poor scenario adaptability, insufficient power supply reliability, and high vehicle energy consumption caused by the fixed threshold strategy in the prior art.

[0057] The functions of each module in the lithium battery power generation control system correspond to the steps in the above-mentioned lithium battery power generation control method embodiment, and their functions and implementation processes will not be described in detail here.

[0058] Thirdly, embodiments of this application provide a lithium battery power generation control device, which can be a personal computer (PC), laptop computer, server, or other device with data processing capabilities.

[0059] Reference Figure 4 , Figure 4This is a schematic diagram of the hardware structure of the lithium battery power generation control device involved in the embodiments of this application. In the embodiments of this application, the lithium battery power generation control device may include a processor, a memory, a communication interface, and a communication bus.

[0060] The communication bus can be of any type and is used to interconnect the processor, memory, and communication interface.

[0061] Communication interfaces include input / output (I / O) interfaces, physical interfaces, and logical interfaces used for interconnecting devices within the lithium battery power generation control equipment, as well as interfaces used for interconnecting the lithium battery power generation control equipment with other devices (such as other computing devices or user equipment). Physical interfaces can be Ethernet interfaces, fiber optic interfaces, ATM interfaces, etc.; user equipment can be displays, keyboards, etc.

[0062] Memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0063] The processor can be a general-purpose processor, which can call the lithium battery power generation control program stored in the memory and execute the lithium battery power generation control method provided in the embodiments of this application. For example, the general-purpose processor can be a central processing unit (CPU). The method executed when the lithium battery power generation control program is called can be referred to in the various embodiments of the lithium battery power generation control method of this application, and will not be repeated here.

[0064] Those skilled in the art will understand that Figure 4 The hardware structure shown does not constitute a limitation of this application and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0065] Fourthly, embodiments of this application also provide a readable storage medium.

[0066] The present application has a readable storage medium storing a lithium battery power generation control program, wherein when the lithium battery power generation control program is executed by a processor, it implements the steps of the lithium battery power generation control method described above.

[0067] The method implemented when the lithium battery power generation control program is executed can be referred to in various embodiments of the lithium battery power generation control method of this application, and will not be repeated here.

[0068] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus. The terms "first," "second," and "third," etc., are used to distinguish different objects, etc., and do not indicate a sequence, nor do they limit "first," "second," and "third" to different types.

[0069] In the description of the embodiments of this application, terms such as "exemplary," "for example," or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplary," "for example," or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary," "for example," or "for instance" is intended to present the relevant concepts in a concrete manner.

[0070] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.

[0071] In some processes described in the embodiments of this application, multiple operations or steps are included in a specific order. However, it should be understood that these operations or steps may not be executed in the order they appear in the embodiments of this application, or they may be executed in parallel. The sequence number of the operation is only used to distinguish different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed sequentially or in parallel, and these operations or steps may be combined.

[0072] It should be noted that the sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0073] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device to execute the methods described in the various embodiments of this application.

[0074] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A lithium battery power generation control method, characterized in that, The lithium battery power generation control method includes: The target battery level threshold corresponding to the current driving mode is determined based on real-time ambient temperature, current driving mode, parking air conditioning activation status, and battery health level. The lithium battery's power generation is controlled based on the target power threshold.

2. The lithium battery power generation control method as described in claim 1, characterized in that, The determination of the target battery level threshold corresponding to the current driving mode based on real-time ambient temperature, current driving mode, parking air conditioning activation status, and battery health level includes: If the current driving mode is detected to be economy mode, the target battery threshold is determined based on the real-time ambient temperature, the activation status of the parking air conditioner, and the first preset temperature threshold. If the current driving mode is detected as the target power preservation mode, the target power threshold is determined based on the real-time ambient temperature, the activation status of the parking air conditioner, the battery health level, the first preset temperature threshold, the second preset temperature threshold, and the third preset temperature threshold. The first preset temperature threshold, the second preset temperature threshold, and the third preset temperature threshold are ordered from largest to smallest as follows: first preset temperature threshold, second preset temperature threshold, and third preset temperature threshold.

3. The lithium battery power generation control method as described in claim 2, characterized in that, The determination of the target battery threshold based on real-time ambient temperature, the activation status of the parking air conditioner, and a first preset temperature threshold includes: If the real-time ambient temperature is lower than the first preset temperature threshold, then the first preset power threshold will be used as the target power threshold. If the real-time ambient temperature is not less than the first preset temperature threshold and the parking air conditioner is activated, then the second preset power threshold is used as the target power threshold, and the first preset power threshold is less than the second preset power threshold.

4. The lithium battery power generation control method as described in claim 2, characterized in that, If the target power preservation mode is the first power preservation mode, the step of determining the target power threshold based on real-time ambient temperature, parking air conditioning activation status, battery health level, first preset temperature threshold, second preset temperature threshold, and third preset temperature threshold includes: If the real-time ambient temperature is detected to be lower than the third preset temperature threshold, the target power threshold is determined based on the third preset power threshold and the battery health level. If the real-time ambient temperature is detected to be between the third preset temperature threshold and the second preset temperature threshold, the target power threshold is determined based on the fourth preset power threshold and the battery health level. If the real-time ambient temperature is detected to be between the second preset temperature threshold and the first preset temperature threshold, the target power threshold is determined based on the fifth preset power threshold and the battery health level. If the real-time ambient temperature is detected to be not less than the first preset temperature threshold and the parking air conditioner is activated, then the target battery threshold is determined based on the sixth preset battery threshold and the battery health level. The third, fourth, fifth, and sixth preset battery thresholds are ordered from largest to smallest as follows: third preset battery threshold, fourth preset battery threshold, fifth preset battery threshold, and sixth preset battery threshold.

5. The lithium battery power generation control method as described in claim 4, characterized in that, The battery health level includes a sub-health level and an aging level. Determining the target battery threshold based on a third preset battery power threshold and the battery health level includes: If the battery health level is sub-healthy, the target power threshold is determined based on the third preset power threshold and the first preset power increment. If the battery health level is aging level, the target power threshold is determined based on the third preset power threshold and the second preset power increment, where the second preset power increment is greater than the first preset power increment.

6. The lithium battery power generation control method as described in claim 1, characterized in that, After the step of determining the target battery level threshold corresponding to the current driving mode based on real-time ambient temperature, current driving mode, parking air conditioning activation status, and battery health level, the method further includes: If the target vehicle is detected to meet the preset high-temperature operating conditions and the user has a habit of parking, the target vehicle will be controlled to adjust to the target battery level threshold for a preset time.

7. The lithium battery power generation control method as described in claim 1, characterized in that, Before the step of determining the target battery level threshold corresponding to the current driving mode based on real-time ambient temperature, current driving mode, parking air conditioning activation status, and battery health level, the method further includes: If the detected battery health level is not less than the first preset health status value, the battery health level is determined to be healthy. If the detected battery health level is not less than the second preset health status value and is greater than the first preset health status value, the battery level is determined to be sub-healthy. If the detected battery health level is lower than the second preset health status value, the battery level is determined to be the aging level, and the first preset health status value is greater than the second preset health status value.

8. A lithium battery power generation control system, characterized in that, The lithium battery power generation control system includes: The first processing module is used to determine the target battery level threshold corresponding to the current driving mode based on the real-time ambient temperature, current driving mode, parking air conditioning activation status and battery health level. The second processing module is used to control the power generation of the lithium battery based on the target power threshold.

9. A lithium battery power generation control device, characterized in that, The lithium battery power generation control device includes a processor, a memory, and a lithium battery power generation control program stored in the memory and executable by the processor, wherein when the lithium battery power generation control program is executed by the processor, it implements the steps of the lithium battery power generation control method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a lithium battery power generation control program, wherein when the lithium battery power generation control program is executed by a processor, it implements the steps of the lithium battery power generation control method as described in any one of claims 1 to 7.

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