Method, device and storage medium for adjusting state of charge of range extender

Abstract

The application relates to a range extender starting state of charge adjustment method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring the number of external charging times of a vehicle in a current mileage unit; judging a number range of the number of external charging times, wherein the number range comprises an up-regulation range, a maintenance range or a down-regulation range; on the other hand, obtaining a comprehensive evaluation value according to vehicle parameters; adjusting the starting state of charge according to a first adjustment value corresponding to the number range and a second adjustment value corresponding to the comprehensive evaluation value, to obtain a target state of charge; and taking the target state of charge as the starting state of charge of the range extender in a next mileage unit. The method can solve the problem that the fixed starting SOC of the range extender in the prior art cannot adapt to flexible driving habits.

Description

Technical Field

[0001] This application relates to the field of range-extended vehicle control technology, and in particular to a method, apparatus, computer equipment, and storage medium for adjusting the starting state of charge of a range extender. Background Technology

[0002] A range-extended vehicle is a hybrid vehicle equipped with a range extender, which drives a generator to power an electric motor and also charges the battery. The electric motor provides the primary driving force for the vehicle. Range-extended vehicles typically also have a high-capacity battery for storing electrical energy.

[0003] The range extender activates when the battery's State of Charge (SOC) drops to a certain value, determined by the vehicle's driving needs and the battery management system's strategy. Generally, the range extender's activation SOC should meet the demands of driving tasks and strike a balance between battery capacity and lifespan. Currently, the activation SOC is typically tied to the driving mode. For example, in pure electric priority mode, the activation SOC is fixed at a lower value, suitable for short-distance travel; in fuel priority mode, the activation SOC is fixed at a higher value, suitable for long-distance travel. However, this rigid approach cannot adapt to users' flexible driving habits and changing driving scenarios. Summary of the Invention

[0004] Based on this, a method, apparatus, computer device, and storage medium for adjusting the starting state of charge of a range extender are provided to improve the problem that the fixed starting SOC of the range extender in the prior art cannot adapt to flexible driving habits and driving scenarios.

[0005] On the one hand, a method for adjusting the starting state of charge of a range extender is provided, the method comprising:

[0006] Get the number of times the vehicle has been externally charged within the current mileage unit;

[0007] Determine the range of the number of times the external charging is connected. The range of the number of times the external charging is connected includes an upward range, a stable range, or a downward range. The number of times the downward range corresponds to is greater than the number of times the stable range corresponds to, and the number of times the upward range corresponds to is less than the number of times the stable range corresponds to.

[0008] A comprehensive evaluation value reflecting the vehicle's battery consumption rate is obtained based on vehicle parameters, including ambient temperature, load, and battery health.

[0009] The starting state of charge is adjusted according to the first adjustment value corresponding to the range of the number of times and the second adjustment value corresponding to the comprehensive evaluation value to obtain the target state of charge. The value of the second adjustment value is positively correlated with the vehicle's power consumption rate.

[0010] The target state of charge is used as the starting state of charge for the range extender in the next mileage unit.

[0011] In one embodiment, obtaining the number of times the vehicle has been externally charged within the current mileage unit includes:

[0012] Get the external charging status and charging time;

[0013] When the external charging status is valid and the charging time is greater than the time threshold, the current external charging is determined to be a valid external charging.

[0014] The number of external charging attempts is obtained by statistically analyzing the effective external charging attempts.

[0015] In one embodiment, the reduction range includes at least one reduction sub-interval. When the number of external charging cycles falls within the reduction range, after determining the range of the number of external charging cycles, the method further includes:

[0016] Determine the sub-range of the external charging count to determine the adjustment value corresponding to the sub-range of the external charging count as the first adjustment value;

[0017] The value of the down-adjustment is positively correlated with the number of times the down-adjustment sub-interval is reached.

[0018] In one embodiment, after obtaining the target state of charge, the method further includes:

[0019] Determine whether the target state of charge exceeds a state of charge threshold, wherein the state of charge threshold includes an upper limit threshold;

[0020] When the target state of charge is greater than the upper limit threshold, the upper limit threshold is determined as the starting state of charge of the next mileage unit, wherein the upper limit threshold is configured as the starting state of charge corresponding to the fuel priority mode of the range-extended vehicle.

[0021] In one embodiment, the state of charge threshold further includes a lower limit threshold, and determining whether the target state of charge exceeds the state of charge threshold further includes:

[0022] When the target state of charge is less than the lower threshold, the lower threshold is determined as the starting state of charge of the next mileage unit, wherein the lower threshold is configured as the starting state of charge corresponding to the pure electric priority mode of the range-extended vehicle.

[0023] In one embodiment, obtaining a comprehensive evaluation value reflecting the vehicle's battery consumption rate based on vehicle parameters includes:

[0024] A single-parameter evaluation value is obtained based on a single vehicle parameter;

[0025] The comprehensive evaluation value is obtained based on the single-parameter evaluation value according to the weighting rule.

[0026] In one embodiment, obtaining a single-parameter evaluation value based on a single vehicle parameter includes:

[0027] A temperature evaluation value is determined based on the deviation between the ambient temperature and the battery's rated operating temperature, wherein the temperature evaluation value is negatively correlated with the deviation.

[0028] A load evaluation value is determined based on the load, wherein the load evaluation value is negatively correlated with the load.

[0029] A health evaluation value is determined based on the battery health status, wherein the health evaluation value is positively correlated with the battery health status;

[0030] The comprehensive evaluation value is obtained by weighting the temperature evaluation value, load evaluation value, and health evaluation value according to the aforementioned temperature evaluation value, load evaluation value, and health evaluation value.

[0031] The second adjustment value is negatively correlated with the comprehensive evaluation value.

[0032] On the other hand, a start-up state-of-charge adjustment device for a range extender is provided, the device comprising:

[0033] The acquisition module is used to acquire the number of times the vehicle has been externally charged within the current mileage unit, and to obtain a comprehensive evaluation value reflecting the vehicle's power consumption rate based on vehicle parameters, including ambient temperature, load, and battery health.

[0034] The judgment module is used to determine the range of the number of times the external charging is connected. The range of the number of times the external charging is connected includes an upward range, a stable range, or a downward range, wherein the number of times the downward range corresponds to is greater than the number of times the stable range corresponds to, and the number of times the upward range corresponds to is less than the number of times the stable range corresponds to.

[0035] The adjustment module is used to adjust the starting charge state according to the first adjustment value corresponding to the range of times and the second adjustment value corresponding to the comprehensive evaluation value to obtain the target charge state, and use the target charge state as the starting charge state of the range extender in the next mileage unit. The value of the second adjustment value is positively correlated with the vehicle's battery consumption rate.

[0036] In one embodiment, the acquisition module is further configured to determine valid external charging based on the external charging status and charging time. When the external charging status is valid and the charging time is greater than a time threshold, the current external charging is determined to be valid. The acquisition module performs statistics based on the valid external charging to obtain the number of external charging cycles.

[0037] In another aspect, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the method.

[0038] A computer-readable storage medium is also provided, on which a computer program is stored, which, when executed by a processor, implements the steps of the method.

[0039] The aforementioned range extender starting state of charge adjustment method, device, computer equipment, and storage medium acquire the number of times the vehicle has been externally charged within the current mileage unit, and adjust the starting state of charge according to the range of the number of external charging times: increasing the state of charge when the number of external charging times is low, maintaining it when the number of external charging times is moderate, and decreasing it when the number of external charging times is high. On the other hand, a comprehensive evaluation value reflecting the vehicle's power consumption rate is obtained based on vehicle parameters. The initial starting state of charge is adjusted based on the first adjustment value corresponding to the number of external charging times and the second adjustment value corresponding to the comprehensive evaluation value. The adjusted target state of charge is used as the starting state of charge for the next mileage unit, thereby learning the user's charging habits and dynamically adapting to the vehicle usage scenario. Attached Figure Description

[0040] Figure 1 This is a flowchart illustrating a method for adjusting the state of charge at startup of a range extender in one embodiment.

[0041] Figure 2 This is a structural block diagram of the range extender start-up state of charge adjustment device in one embodiment;

[0042] Figure 3 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0044] Range-extended vehicles use range extenders to convert fuel into electricity, which can be used directly to drive the vehicle or charge the battery, making it an effective means of extending driving range.

[0045] The timing of range extender activation significantly impacts the driving experience. Generally, the battery's State of Charge (SOC) is used as a benchmark. The range extender's initial SOC should be sufficient to meet the demands of the driving task, striking a balance between battery capacity and lifespan. For example, during long-distance driving or when charging is unavailable, the range extender's initial SOC might be set higher to ensure adequate driving power. Conversely, during city driving or when frequent charging is possible, the range extender's initial SOC might be lower to reduce fuel consumption and extend battery life.

[0046] Currently, the start-up SOC of range extenders is tied to the driving mode. If users need to change the start-up timing of the range extender, they need to adjust the driving mode themselves, which does not provide users with a more intelligent and flexible adjustment solution.

[0047] This application provides a method for adjusting the starting state of charge (SOC) of a range extender in intelligent mode. Based on the judgment of the number of times the user has connected to an external charger, the method adjusts the starting SOC of the range extender, thereby improving its adaptability to different driving habits.

[0048] In one embodiment, such as Figure 1 As shown, the method includes the following steps:

[0049] Step 101: Obtain the number of times the vehicle has been externally charged within the current mileage unit.

[0050] For example, the mileage unit refers to a fixed length of mileage. The mileage unit is further 1-2 times the pure electric driving range of the vehicle. If the mileage unit is defined too short, such as 50 kilometers, the number of external charging times for most mileage units will be zero, which is not of reference value. If the mileage unit is defined too long, the interval is too long, and the number of external charging times within the mileage unit cannot accurately reflect the user's active charging habits.

[0051] Generally, 500 kilometers is a suitable mileage unit for range-extended vehicles. In this embodiment, the number of external charging times within 500 kilometers is counted, and the target SOC value in intelligent mode is adjusted by different external charging times. When the vehicle mileage reaches 500 kilometers (the total driving mileage reaches 500 kilometers, 1000 kilometers, 1500 kilometers, 2000 kilometers, and so on), the number of external charging times is reset.

[0052] External charging refers to the use of charging piles, vehicle-to-vehicle charging, and other technologies to replenish the battery. Replenishing the battery with electricity generated by the range extender is not counted as external charging.

[0053] It should be noted that it is necessary to assess the validity of the number of charging cycles in order to filter out invalid data and improve data accuracy.

[0054] In one embodiment, the determination is made based on the vehicle's external charging status and charging time. When the vehicle is externally charged, the vehicle's external charging status and charging time are obtained. If the external charging status is valid and the charging time is greater than a time threshold, then the current external charging is determined to be a valid external charging, and the number of valid external charging is counted as the number of external charging cycles.

[0055] For example, external charging may include DC charging and AC charging;

[0056] The principle behind calculating the number of AC charging cycles is as follows:

[0057] 1. Obtain the AC charging status of the BMS (Battery Management System) BmsAcChrgStauts (0x0: init; 0x1: No Charge; 0x2: Ac Charge; 0x3: DC Charge);

[0058] 2. Obtain charging time:

[0059] When BmsAcChrgStauts = 0x2: Ac Charge starts timing the charging time; otherwise, the charging time is reset to zero.

[0060] 3. If both of the following conditions are met, the number of charging cycles is incremented by 1; otherwise, the number remains unchanged:

[0061] ①BmsAcChrgStauts=0x2:Ac Charge;

[0062] ② Charging time > 900s (15min).

[0063] The principle behind calculating the number of DC charging cycles is as follows:

[0064] 1. Obtain the AC charging status of the BMS: BmsAcChrgStauts(0x0: init; 0x1: No Charge; 0x2: AcCharge; 0x3: DC Charge)

[0065] 2. Obtain charging time:

[0066] When BmsAcChrgStauts = 0x3: Dc Charge starts timing; otherwise, the charging time is reset to zero.

[0067] 3. If both of the following conditions are met, the number of charging cycles is incremented by 1; otherwise, the number remains unchanged:

[0068] ①BmsAcChrgStauts=0x3:Dc Charge;

[0069] ②ChargeTime>900s(15min).

[0070] Step 102: Determine the range of the number of times the external charging is performed.

[0071] The number of external charging attempts can be adjusted upwards or downwards. When the number of attempts falls within the upward adjustment range, the starting SOC is increased; when the number of attempts falls within the downward adjustment range, the starting SOC is decreased. Furthermore, for the same vehicle model, there will be a relatively common and reasonable number of external charging attempts per 500 kilometers of driving. Therefore, a maintenance range is also included. When the number of external charging attempts falls within the maintenance range, the current starting SOC is maintained. Every 500 kilometers driven, the number of external charging attempts will fall into one of the aforementioned three ranges.

[0072] It's worth noting that different definition methods have different effects when defining the range for adjustment, maintenance, or reduction. For example, the size of the maintenance range may vary for different new energy vehicles. For range-extended vehicles, the typical number of external charging trips is 1-2 per 500 kilometers. If the number of external charging trips is lower than this range, users may be more accustomed to consuming fuel or find it difficult to charge, making it necessary to increase the range extender's starting SOC. If the number of external charging trips is higher than this range, users may be more accustomed to consuming electric power and find external charging more convenient, making it necessary to decrease the range extender's starting SOC to ensure that electric power is fully utilized, increase the pure electric driving range per charge, improve the user experience, and extend battery life.

[0073] Based on this, in this embodiment, the start-up SOC adjustment strategy corresponding to the number of external charging cycles is as follows:

[0074] ① External charging cycles = 0 times, SOC starts up;

[0075] ② External charging cycles = 1-2 times, startup SOC remains unchanged;

[0076] ③ The number of times external charging is used is ≥3 times, and the number of times the SOC is started is reduced.

[0077] Based on the actual vehicle calibration results, the specific first adjustment value corresponding to different ranges of calibration times can be determined.

[0078] Step 103: Obtain a comprehensive evaluation value reflecting the vehicle's battery consumption rate based on vehicle parameters.

[0079] The vehicle parameters are those that can affect the rate of vehicle battery consumption under different scenarios, such as ambient temperature, vehicle load, and battery health. In some implementations, the actual values ​​of the vehicle parameters when the vehicle reaches the end of the mileage unit are used as a reference, while in other implementations, statistical values ​​such as the average or median of historical values ​​may be used as a reference.

[0080] In this embodiment, the final evaluation value is obtained by separately calculating the evaluation value for each vehicle parameter and then performing a weighted calculation.

[0081] Ambient temperature affects battery performance. The greater the deviation between the ambient temperature and the battery's rated operating temperature, the greater the impact on battery performance. Therefore, the temperature evaluation value can be determined based on the deviation between the ambient temperature and the battery's rated operating temperature. The temperature evaluation value is negatively correlated with the deviation.

[0082] The vehicle's load affects its driving power, so a load evaluation value can be determined based on the load. The load evaluation value is negatively correlated with the load.

[0083] Battery health reflects the battery's charging and discharging performance. A health evaluation value can be determined based on the battery's health, and the health evaluation value is positively correlated with the battery's health.

[0084] For example, the evaluation of ambient temperature A is carried out in the following way:

[0085] High temperatures (above 40°C): have a very negative impact on battery life and performance, and are given a lower score;

[0086] Moderate temperature (20℃-40℃): has little impact on battery life and performance, and is given a moderate score;

[0087] Low temperatures (-10℃ to 20℃): Battery capacity will decrease at low temperatures, but the impact on lifespan and performance is relatively small, so a moderate score is given.

[0088] Extremely low temperature (below -10℃): Battery performance and capacity will be greatly reduced at extremely low temperatures, resulting in a lower score.

[0089] The evaluation of vehicle load capacity B can be done in the following way:

[0090] Light load (less than the vehicle's rated load): has less impact on range and performance, and is given a higher score;

[0091] Fully loaded (reaching the vehicle's rated load capacity): This has a certain impact on range and performance, and is given a moderate score.

[0092] Overloading (exceeding the vehicle's rated load): This has a significant impact on range and performance, and is given a lower score.

[0093] The battery health level C is evaluated using the following method:

[0094] Good (battery health greater than 90%): Minimal impact on battery life and performance, awarded a high score;

[0095] General (battery health between 80% and 90%): Has some impact on battery life and performance, and is given a moderate score;

[0096] Poor (battery health less than 80%): Significantly impacts battery life and performance, resulting in a lower score.

[0097] The above evaluation method is only an example. In some implementations, mathematical models, neural networks, feature weight learning algorithms, fuzzy statistics, and other methods can also be used to predict and score the vehicle's battery consumption rate.

[0098] The weighting rules for the above single-parameter evaluation values ​​can be determined using methods such as real-vehicle calibration. In this embodiment, the weighting is 3:1:1, that is:

[0099] The overall evaluation value K = (3A+B+C) / (3+1+1).

[0100] Based on the above evaluation method, when the range and performance are greatly affected, a lower comprehensive evaluation value will be obtained. Correspondingly, under the same initial charge and driving conditions, the lower the comprehensive evaluation value of the vehicle, the faster the charge will drop when driving on electric power. In this case, configuring a relatively high starting state of charge is beneficial to battery protection.

[0101] In actual implementation, different comprehensive evaluation values ​​are configured with different second adjustment values, and the value of the second adjustment value is positively correlated with the vehicle's battery consumption rate.

[0102] Step 104: Adjust the starting state of charge according to the first adjustment value corresponding to the range of times and the second adjustment value corresponding to the comprehensive evaluation value to obtain the target state of charge.

[0103] For the first adjustment value, in order to prevent the change in SOC from being too large every 500 kilometers, the above strategy is used to control the change within [-10%, 5%].

[0104] For example, if the initial SOC value of the current mileage unit is 50%, and the number of external charging times is 4 when the current mileage unit ends, then the initial value is reduced by 10%, resulting in the first adjusted SOC = 40%.

[0105] For the second adjustment value, if the vehicle's battery consumption rate is evaluated on a percentage basis, for example:

[0106] A higher score (K > 80) indicates that the impact on battery life and performance is relatively small, and the second adjustment value is 0.

[0107] When the score is low (60 < K < 80): it indicates that the battery life and performance are somewhat affected, and the second adjustment value is increased by 5%;

[0108] When the score is extremely low (K < 60): it indicates that the battery life and performance are significantly affected, and the second adjustment value is increased by 10%.

[0109] The target state of charge is obtained by adding a second adjustment value to the first adjustment.

[0110] Step 105: The target state of charge is used as the starting state of charge of the range extender in the next mileage unit.

[0111] Using the above method, based on the number of times the range-extended vehicle is externally charged within a certain mileage and the prediction of power consumption, the starting SOC of the range extender is adjusted. When the number of external charges is within a common and reasonable range and the power consumption rate is not significantly affected, the current level can be maintained. If the number of external charges is low and the power consumption rate is significantly affected, the starting SOC can be increased to allow the range extender to intervene earlier and meet the user's fuel priority needs. When the number of external charges is high, the starting SOC is decreased to ensure that the electric energy is fully utilized. On the other hand, the power consumption rate varies in different scenarios. Adjusting the starting SOC based on the prediction of the power consumption rate is beneficial for battery protection and improving the driving experience.

[0112] In some embodiments, the adjustment range or the adjustment range can be divided into more sub-intervals to allow for more gradient adjustments. Taking the adjustment range as an example, the adjustment range may include two adjustment sub-intervals:

[0113] First sub-section: External charging times = 3-4 times, SOC startup time reduced by 5%;

[0114] Second sub-range: External charging times > 4 times, SOC startup time reduced by 10%.

[0115] When the vehicle has traveled 500 kilometers, the system determines the lowering range of the number of external charging cycles and sets the lowering value corresponding to the lowering range as the first adjustment value, thereby obtaining a new starting SOC.

[0116] It's worth noting that the more times a vehicle is externally charged within a 500-kilometer driving range, the greater the corresponding reduction value.

[0117] In one embodiment, the upper limit threshold (maximum value) and lower limit threshold (minimum value) of the start-up SOC are limited. For example, the initial value of the start-up SOC and the minimum value of the start-up SOC are referenced to the start-up SOC in pure electric priority mode, and in this embodiment, they are set to 20%.

[0118] The maximum startup SOC is referenced to the startup SOC in fuel priority mode, which is set to 70% in this embodiment.

[0119] If the adjusted target SOC is less than 20% after driving 500 kilometers, then 20% will be taken as the final target SOC; if the adjusted target SOC is greater than 70%, then 70% will be taken as the final target SOC.

[0120] By adopting the above-mentioned restriction method, after learning the user's charging habits over a long period of time, the range extender's starting SOC can gradually approach the fuel priority mode or pure electric priority mode, enabling the vehicle to automatically complete the mode selection and improve the user's driving experience.

[0121] In the specific implementation process, a storage unit is used to record data such as the current number of external charging attempts, total mileage, and initial SOC. This data is then cleared, reset, or updated when certain conditions are met. Specifically, when the vehicle's total mileage equals 500 * k, the number of external charging attempts is cleared (where k = 1, 2, 3, 4...), and the charging attempt reset flag is triggered to position 1. The charging attempt reset flag is cleared after 3 seconds, and then the initial SOC adjustment steps are initiated.

[0122] (1) The startup SOC increases by 5% when the following conditions are met simultaneously:

[0123] ① Reset charging count flag = 1;

[0124] ②Number of charging cycles = 0 times.

[0125] (2) The SOC startup remains unchanged when the following conditions are met simultaneously:

[0126] ① Reset charging count flag = 1;

[0127] ② Number of charging cycles = 1-2 times.

[0128] (3) The startup SOC is reduced by 5% when the following conditions are met simultaneously:

[0129] ① Reset charging count flag = 1;

[0130] ② Number of charging cycles = 3-4 times.

[0131] (4) The startup SOC will be reduced by 10% when the following conditions are met simultaneously:

[0132] ① Reset charging count flag = 1;

[0133] ②Number of charging cycles > 4 times.

[0134] In the above method, the start-up state of charge adjustment process is only performed when the total driving mileage meets k times the mileage unit, thus avoiding repeated adjustments of the start-up SOC during driving.

[0135] It should be understood that, although Figure 1 The steps in the flowchart are shown sequentially as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order in which these steps are executed, and they can be performed in other orders. Figure 1 At least some of the steps in the process may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.

[0136] In one embodiment, such as Figure 2 As shown, a starting state of charge adjustment device for a range extender is provided, comprising: an acquisition module, a judgment module, and an adjustment module, wherein:

[0137] The acquisition module is used to acquire the number of times the vehicle has been externally charged within the current mileage unit, and to obtain a comprehensive evaluation value reflecting the vehicle's power consumption rate based on vehicle parameters, including ambient temperature, load, and battery health.

[0138] The judgment module is used to determine the range of the number of times the external charging is connected. The range of the number of times the external charging is connected includes an upward range, a stable range, or a downward range, wherein the number of times the downward range corresponds to is greater than the number of times the stable range corresponds to, and the number of times the upward range corresponds to is less than the number of times the stable range corresponds to.

[0139] The adjustment module is used to adjust the starting charge state according to the first adjustment value corresponding to the range of times and the second adjustment value corresponding to the comprehensive evaluation value to obtain the target charge state, and use the target charge state as the starting charge state of the range extender in the next mileage unit. The value of the second adjustment value is positively correlated with the vehicle's battery consumption rate.

[0140] Using the aforementioned device, the number of times the vehicle has been externally charged within the current mileage unit is obtained. The starting state of charge is adjusted according to the range of the number of external charging times: if the number of times is low, it is increased; if the number of times is moderate, it is maintained; and if the number of times is high, it is decreased. On the other hand, a comprehensive evaluation value reflecting the vehicle's power consumption rate is obtained based on vehicle parameters. The initial starting state of charge is adjusted by combining the first adjustment value corresponding to the number of external charging times and the second adjustment value corresponding to the comprehensive evaluation value. The adjusted target state of charge is used as the starting state of charge for the next mileage unit, thereby learning the user's charging habits and dynamically adapting to the scenario.

[0141] In one embodiment, the acquisition module filters valid external charging based on the external charging status and charging time. Specifically, the acquisition module acquires the external charging status and charging time. When the external charging status is valid and the charging time is greater than a time threshold, the current external charging is determined to be a valid external charging. The number of external charging attempts is obtained by statistical analysis based on the valid external charging attempts.

[0142] In one embodiment, when determining the range of external charging counts, the determining module further determines the sub-interval of the external charging counts. For example, the adjustment range includes multiple different adjustment sub-intervals, and different adjustment sub-intervals correspond to different adjustment values.

[0143] In one embodiment, the adjustment module further includes a threshold judgment unit for judging whether the target state of charge exceeds a state of charge threshold. For example, when the threshold judgment unit judges that the target state of charge is greater than the upper limit threshold, the adjustment module can determine the upper limit threshold as the starting state of charge of the next mileage unit; when the threshold judgment module judges that the target state of charge is less than the lower limit threshold, the adjustment module determines the lower limit threshold as the starting state of charge of the next mileage unit.

[0144] In one embodiment, the device further includes a mileage recording unit for acquiring and storing the total mileage of the vehicle, and triggering an adjustment to the starting state of charge and a reset of the number of external charging cycles when the total mileage of the vehicle reaches k times the mileage unit.

[0145] In one embodiment, the acquisition module obtains a single-parameter evaluation value based on vehicle parameters; and obtains the comprehensive evaluation value based on the single-parameter evaluation value according to a weighting rule.

[0146] In one embodiment, the acquisition module determines a temperature evaluation value based on the deviation between the ambient temperature and the battery's rated operating temperature, wherein the temperature evaluation value is negatively correlated with the deviation; determines a load evaluation value based on the load, wherein the load evaluation value is negatively correlated with the load; determines a health evaluation value based on the battery health, wherein the health evaluation value is positively correlated with the battery health; and then obtains a comprehensive evaluation value based on the temperature evaluation value, load evaluation value, and health evaluation value according to a weighted rule; wherein the second adjustment value is negatively correlated with the comprehensive evaluation value.

[0147] Specific limitations regarding the range extender startup state of charge adjustment device can be found in the limitations of the range extender startup state of charge adjustment method described above, and will not be repeated here. Each module in the aforementioned range extender startup state of charge adjustment device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in hardware or independently of the processor in a computer device, or stored in software in the memory of a computer device, so that the processor can call and execute the corresponding operations of each module.

[0148] In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 3 As shown, the computer device includes a processor, memory, network interface, display screen, and input devices connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The network interface is used to communicate with external terminals via a network connection. When executed by the processor, the computer program implements a method for adjusting the state of charge (SOC) at startup of a range extender. The display screen can be an LCD screen or an e-ink screen. The input devices can be a touch layer covering the display screen, buttons, a trackball, or a touchpad mounted on the computer device casing, or an external keyboard, touchpad, or mouse.

[0149] Those skilled in the art will understand that Figure 3 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0150] In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to perform the following steps:

[0151] Get the number of times the vehicle has been externally charged within the current mileage unit;

[0152] Determine the range of the number of times the external charging is connected. The range of the number of times the external charging is connected includes an upward range, a stable range, or a downward range. The number of times the downward range corresponds to is greater than the number of times the stable range corresponds to, and the number of times the upward range corresponds to is less than the number of times the stable range corresponds to.

[0153] A comprehensive evaluation value reflecting the vehicle's battery consumption rate is obtained based on vehicle parameters, including ambient temperature, load, and battery health.

[0154] The starting state of charge is adjusted according to the first adjustment value corresponding to the range of the number of times and the second adjustment value corresponding to the comprehensive evaluation value to obtain the target state of charge. The value of the second adjustment value is positively correlated with the vehicle's power consumption rate.

[0155] The target state of charge is used as the starting state of charge for the range extender in the next mileage unit.

[0156] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0157] Get the external charging status and charging time;

[0158] When the external charging status is valid and the charging time is greater than the time threshold, the current external charging is determined to be a valid external charging.

[0159] The number of external charging attempts is obtained by statistically analyzing the effective external charging attempts.

[0160] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0161] Determine the sub-range of the external charging count to determine the adjustment value corresponding to the sub-range of the external charging count as the first adjustment value;

[0162] The value of the down-adjustment is positively correlated with the number of times the down-adjustment sub-interval is reached.

[0163] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0164] The system determines whether the target state of charge (SOC) exceeds a SOC threshold, which includes an upper threshold. When the target SOC is greater than the upper threshold, the upper threshold is determined as the starting SOC for the next mileage unit, wherein the upper threshold is configured as the starting SOC corresponding to the fuel-priority mode of the range-extended vehicle. The SOC threshold also includes a lower threshold. When the target SOC is less than the lower threshold, the lower threshold is determined as the starting SOC for the next mileage unit, wherein the lower threshold is configured as the starting SOC corresponding to the pure electric priority mode of the range-extended vehicle.

[0165] In one embodiment, when the processor executes the computer program, it further performs the following steps: obtaining the total mileage of the vehicle; when the total mileage is k times the mileage unit, performing a state of charge adjustment and resetting the number of external charging cycles.

[0166] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor:

[0167] Get the number of times the vehicle has been externally charged within the current mileage unit;

[0168] Determine the range of the number of times the external charging is connected. The range of the number of times the external charging is connected includes an upward range, a stable range, or a downward range. The number of times the downward range corresponds to is greater than the number of times the stable range corresponds to, and the number of times the upward range corresponds to is less than the number of times the stable range corresponds to.

[0169] A comprehensive evaluation value reflecting the vehicle's battery consumption rate is obtained based on vehicle parameters, including ambient temperature, load, and battery health.

[0170] The starting state of charge is adjusted according to the first adjustment value corresponding to the range of the number of times and the second adjustment value corresponding to the comprehensive evaluation value to obtain the target state of charge. The value of the second adjustment value is positively correlated with the vehicle's power consumption rate.

[0171] The target state of charge is used as the starting state of charge for the range extender in the next mileage unit.

[0172] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0173] Get the external charging status and charging time;

[0174] When the external charging status is valid and the charging time is greater than the time threshold, the current external charging is determined to be a valid external charging.

[0175] The number of external charging attempts is obtained by statistically analyzing the effective external charging attempts.

[0176] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0177] Determine the sub-range of the external charging count to determine the adjustment value corresponding to the sub-range, which is the first adjustment value; wherein the value of the adjustment value is positively correlated with the number of times the sub-range corresponds to.

[0178] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0179] Determine whether the target state of charge exceeds a state of charge threshold, wherein the state of charge threshold includes an upper limit threshold;

[0180] When the target state of charge is greater than the upper threshold, the upper threshold is determined as the starting state of charge for the next mileage unit, wherein the upper threshold is configured as the starting state of charge corresponding to the fuel priority mode of the range-extended vehicle; the state of charge threshold also includes a lower threshold, and when the target state of charge is less than the lower threshold, the lower threshold is determined as the starting state of charge for the next mileage unit, wherein the lower threshold is configured as the starting state of charge corresponding to the pure electric priority mode of the range-extended vehicle.

[0181] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0182] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0183] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A method for adjusting the state of charge at startup of a range extender, characterized in that, include: Get the number of times the vehicle has been externally charged within the current mileage unit; Determine the range of the number of times the external charging is connected. The range of the number of times the external charging is connected includes an upward range, a stable range, or a downward range. The number of times the downward range corresponds to is greater than the number of times the stable range corresponds to, and the number of times the upward range corresponds to is less than the number of times the stable range corresponds to. A comprehensive evaluation value reflecting the vehicle's battery consumption rate is obtained based on vehicle parameters, including ambient temperature, load, and battery health. The starting state of charge is adjusted according to the first adjustment value corresponding to the range of the number of times and the second adjustment value corresponding to the comprehensive evaluation value to obtain the target state of charge. The value of the second adjustment value is positively correlated with the vehicle's power consumption rate. The target state of charge is used as the starting state of charge for the range extender in the next mileage unit.

2. The method for adjusting the starting state of charge of a range extender according to claim 1, characterized in that, The process of obtaining the number of times the vehicle has been externally charged within the current mileage unit includes: Get the external charging status and charging time; When the external charging status is valid and the charging time is greater than the time threshold, the current external charging is determined to be a valid external charging. The number of external charging attempts is obtained by statistically analyzing the effective external charging attempts.

3. The method for adjusting the starting state of charge of a range extender according to claim 1, characterized in that, The downward adjustment range includes at least one downward adjustment sub-interval. When the number of external charging cycles falls within the downward adjustment range, after determining the range of the number of external charging cycles, the method further includes: Determine the sub-range of the external charging count to determine the adjustment value corresponding to the sub-range of the external charging count as the first adjustment value; The value of the down-adjustment is positively correlated with the number of times the down-adjustment sub-interval is reached.

4. The method for adjusting the starting state of charge of a range extender according to claim 1, characterized in that, After obtaining the target state of charge, the process further includes: Determine whether the target state of charge exceeds a state of charge threshold, wherein the state of charge threshold includes an upper limit threshold; When the target state of charge is greater than the upper limit threshold, the upper limit threshold is determined as the starting state of charge of the next mileage unit, wherein the upper limit threshold is configured as the starting state of charge corresponding to the fuel priority mode of the range-extended vehicle.

5. The method for adjusting the starting state of charge of a range extender according to claim 4, characterized in that, The state of charge threshold also includes a lower limit threshold, and the step of determining whether the target state of charge exceeds the state of charge threshold further includes: When the target state of charge is less than the lower threshold, the lower threshold is determined as the starting state of charge of the next mileage unit, wherein the lower threshold is configured as the starting state of charge corresponding to the pure electric priority mode of the range-extended vehicle.

6. The method for adjusting the starting state of charge of a range extender according to claim 1, characterized in that, The comprehensive evaluation value obtained based on vehicle parameters, reflecting the vehicle's battery consumption rate, includes: A single-parameter evaluation value is obtained based on a single vehicle parameter; The comprehensive evaluation value is obtained based on the single-parameter evaluation value according to the weighting rule.

7. The method for adjusting the starting state of charge of a range extender according to claim 6, characterized in that, The process of obtaining a single-parameter evaluation value based on a single vehicle parameter includes: A temperature evaluation value is determined based on the deviation between the ambient temperature and the battery's rated operating temperature, wherein the temperature evaluation value is negatively correlated with the deviation. A load evaluation value is determined based on the load, wherein the load evaluation value is negatively correlated with the load. A health evaluation value is determined based on the battery health status, wherein the health evaluation value is positively correlated with the battery health status; The comprehensive evaluation value is obtained by weighting the temperature evaluation value, load evaluation value, and health evaluation value according to the aforementioned temperature evaluation value, load evaluation value, and health evaluation value. The second adjustment value is negatively correlated with the comprehensive evaluation value.

8. A starting state of charge adjustment device for a range extender, characterized in that, The device includes: The acquisition module is used to acquire the number of times the vehicle has been externally charged within the current mileage unit, and to obtain a comprehensive evaluation value reflecting the vehicle's power consumption rate based on vehicle parameters, including ambient temperature, load, and battery health. The judgment module is used to determine the range of the number of times the external charging is connected. The range of the number of times the external charging is connected includes an upward range, a stable range, or a downward range, wherein the number of times the downward range corresponds to is greater than the number of times the stable range corresponds to, and the number of times the upward range corresponds to is less than the number of times the stable range corresponds to. The adjustment module is used to adjust the starting charge state according to the first adjustment value corresponding to the range of times and the second adjustment value corresponding to the comprehensive evaluation value to obtain the target charge state, and use the target charge state as the starting charge state of the range extender in the next mileage unit. The value of the second adjustment value is positively correlated with the vehicle's battery consumption rate.

9. A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 7.

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