Method and system for evaluating the impact of acceleration performance degradation of a hybrid electric vehicle driving performance
Patent Information
- Application Number
- CN202610837272.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-10
- Publication Date
- 2026-09-15
Smart Images
Figure CN122758643A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of health status assessment and power performance analysis of hybrid vehicles, and particularly relates to a method and system for assessing the impact of acceleration performance degradation on the driving performance of hybrid electric vehicles. Background Technology
[0002] In the long-term use of hybrid electric vehicles (including HEVs, PHEVs, and REEVs), the powertrain inevitably experiences performance degradation: the instantaneous discharge capacity of the battery decreases with the number of cycles, the maximum output power of the engine (or range extender) decreases due to mechanical wear, and the engine's power loading rate decreases due to increased mechanical lag. These degradation phenomena directly lead to a decline in vehicle acceleration performance, manifested as a "slower acceleration" perceived by the driver. Current technologies typically monitor steady-state power parameters (such as battery SOP and engine maximum power) through the battery management system or engine management system, and then use the degraded steady-state power parameters in the vehicle dynamics model to estimate changes in acceleration time, or trigger performance alarms through on-board diagnostic systems.
[0003] However, existing technologies still have the following shortcomings: First, most existing methods only focus on steady-state power degradation, neglecting the impact of engine power load rate degradation (i.e., slower dynamic response) on acceleration performance. This degradation often occurs earlier than the maximum power degradation and is difficult to quantify. Second, there is a lack of an analytical calculation framework that directly maps battery SOP degradation, engine maximum power degradation, and power load rate degradation to acceleration time extension. The evaluation conclusion remains at the abstract level of "power decreased by X%", and cannot output a perceptible conclusion such as "acceleration time extended by Y seconds". Third, when the three degradation modes occur simultaneously, existing methods cannot quantify their respective contributions to acceleration time, making it difficult to support accurate fault tracing and maintenance decisions. Summary of the Invention
[0004] To address the aforementioned technical problems, this invention provides a method for evaluating the impact of acceleration performance degradation on the driving performance of hybrid electric vehicles, comprising:
[0005] Obtain the nominal and current characteristic quantities of the hybrid electric vehicle power system, and determine the degradation amount of instantaneous battery discharge capacity, the degradation amount of maximum engine power, and the degradation amount of engine power loading rate based on the difference between the nominal and current characteristic quantities.
[0006] A nominal power supply characteristic curve is established based on the nominal characteristic quantity, and a degraded power supply characteristic curve is established based on the current characteristic quantity;
[0007] Within the nominal acceleration time, the degradation energy gap is calculated based on the area difference between the nominal energy supply characteristic curve and the degradation energy supply characteristic curve.
[0008] Based on the principle of area compensation, a compensation equation is established according to the degradation energy gap, and the acceleration time extension is solved according to the compensation equation to output the actual acceleration time after degradation.
[0009] Optionally, the degradation of battery instantaneous discharge capacity, engine maximum power, and engine power load rate are determined based on the difference between the nominal characteristic quantity and the current characteristic quantity, including:
[0010] The degradation amount of the battery's instantaneous discharge capacity is determined based on the comparison between the current instantaneous discharge capacity provided in real time by the battery management system and the nominal instantaneous discharge capacity at the factory.
[0011] The engine maximum power degradation is determined based on the comparison between the current maximum target power provided in real time by the engine management system and the factory-nominated maximum target power.
[0012] The degradation amount of the engine power loading rate is determined by comparing the current power loading rate dynamically estimated by the engine management system with the nominal power loading rate calibrated on the bench.
[0013] Optionally, a nominal power supply characteristic curve is established based on the nominal characteristic quantity, and a degraded power supply characteristic curve is established based on the current characteristic quantity, including:
[0014] Calculate the nominal engine saturation time based on the nominal engine maximum power and nominal power load rate, and establish the nominal energy supply characteristic curve based on the nominal engine saturation time;
[0015] Calculate the current engine saturation time based on the current engine maximum power and current power loading rate, and establish the degradation power supply characteristic curve based on the current engine saturation time.
[0016] Optionally, within the nominal acceleration time, the degradation energy gap is calculated based on the area difference between the nominal energy supply characteristic curve and the degradation energy supply characteristic curve, including:
[0017] Determine the relationship between the nominal acceleration time and the current engine saturation time;
[0018] If the nominal acceleration time is less than or equal to the current engine saturation time, the degradation energy gap is calculated according to the analytical formula corresponding to the unsaturated condition.
[0019] If the nominal acceleration time is greater than the current engine saturation time, the degradation energy gap is calculated according to the analytical formula corresponding to the saturation condition.
[0020] Optionally, the degradation energy gap is calculated according to the analytical formula corresponding to the unsaturated condition, including:
[0021] Based on the instantaneous discharge capacity degradation of the battery, the power loading rate degradation, and the nominal acceleration time, calculate the rectangular area loss caused by battery degradation and the triangular area increment caused by loading rate degradation, and use the sum of the rectangular area loss and the triangular area increment as the degradation energy gap.
[0022] Optionally, the degradation energy gap is calculated according to the analytical formula corresponding to the saturation condition, including:
[0023] The nominal acceleration time is divided into a ramp phase and a steady-state phase based on the current engine saturation time.
[0024] Calculate the area difference of the energy supply curves before and after degradation in the slope stage and the steady-state stage respectively, and take the sum of the area differences between the two stages as the degradation energy gap.
[0025] Optionally, based on the area compensation principle, a compensation equation is established according to the degradation energy gap, and the acceleration time extension is solved according to the compensation equation, including:
[0026] Determine the relationship between the nominal acceleration time and the current engine saturation time;
[0027] If the nominal acceleration time is less than or equal to the current engine saturation time, a univariate quadratic compensation equation is established, and the physical positive root is taken as the acceleration time extension.
[0028] If the nominal acceleration time is greater than the current engine saturation time, a linear compensation equation is established, and the acceleration time extension is solved directly.
[0029] Optionally, after taking the physical positive root as the acceleration time extension, the method further includes:
[0030] Verify whether the compensation process exceeds the current engine saturation time;
[0031] If the process is to be crossed, the compensation process will be divided into a slope section compensation and a steady-state section compensation. The slope section will be compensated using the current degraded power supply curve, and the remaining gap will be compensated by the steady-state section using the maximum net power.
[0032] On the other hand, the present invention also provides a system for evaluating the acceleration performance impact of hybrid electric vehicle drive performance degradation, comprising:
[0033] The feature acquisition module is used to acquire the nominal feature quantity and the current feature quantity, and determine the instantaneous discharge capacity degradation of the battery, the maximum power degradation of the engine, and the power loading rate degradation of the engine based on the difference between the nominal feature quantity and the current feature quantity.
[0034] The power supply curve establishment module is connected to the feature quantity acquisition module and is used to establish a nominal power supply characteristic curve based on the nominal feature quantity, and to establish a degraded power supply characteristic curve based on the current feature quantity.
[0035] An energy gap calculation module, connected to the energy supply curve establishment module, is used to calculate the degradation energy gap within the nominal acceleration time based on the area difference between the nominal energy supply characteristic curve and the degradation energy supply characteristic curve.
[0036] The area compensation solution module is connected to the energy gap calculation module. It is used to establish a compensation equation based on the area compensation principle and the degradation energy gap, and to solve for the acceleration time extension based on the compensation equation.
[0037] The evaluation output module, connected to the area compensation solution module, is used to output the actual acceleration time after degradation.
[0038] On the other hand, the present invention also provides an electronic device including a memory, a processor, and a computing program stored in the memory and executable on the processor, wherein the processor implements the method when executing the computing program.
[0039] On the other hand, the present invention also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the method.
[0040] Compared with the prior art, the present invention has the following advantages and technical effects:
[0041] (1) For the first time, a direct analytical correlation was established between three degradation characteristics and the acceleration time extension: This invention clearly defines the battery SOP degradation amount. Engine maximum power degradation and power loading rate degradation The three degradation characteristics are calculated by area calculation and area compensation of the degradation energy gap, and the acceleration time extension caused by degradation is directly output. This transforms the abstract concept of "power degradation" into the perceptible "acceleration time increased by X seconds," significantly improving the interpretability of the evaluation results.
[0042] (2) It can distinguish the differential impact of three degradation modes on acceleration performance: battery SOP degradation ( This causes the overall power supply curve to shift downward, affecting acceleration throughout the entire range; the engine's maximum power decreases. The main impact is on steady-state power supply; power loading rate degradation. This leads to increased area loss in the slope section, with a particularly significant impact on short acceleration processes. This invention can quantify the impact of the three modes separately, supporting accurate fault tracing.
[0043] (3) The physical meaning of the area compensation principle is clear and the calculation is efficient: the degradation energy gap is presented intuitively by the area difference in the Pt diagram. The area compensation equation has an algebraic closed solution (quadratic or linear equation) under both working conditions. The amount of calculation is extremely low. It can be evaluated online in real time in VCU without the need for an offline test bench. Attached Figure Description
[0044] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:
[0045] Figure 1 This is a schematic diagram of the overall process of the method for evaluating the acceleration performance impact of hybrid electric vehicle driving performance degradation according to an embodiment of the present invention;
[0046] Figure 2 This is a schematic diagram comparing the energy supply characteristic curves before and after degradation in an embodiment of the present invention (Pt coordinate system, unsaturated condition);
[0047] Figure 3 This is a schematic diagram comparing the energy supply characteristic curves before and after degradation in an embodiment of the present invention (Pt coordinate system, saturation condition). Detailed Implementation
[0048] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.
[0049] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.
[0050] Example 1
[0051] like Figure 1 As shown, this embodiment provides a method for evaluating the acceleration performance impact of hybrid electric vehicle driving performance degradation, including:
[0052] Collect the nominal and current characteristic quantities of the power system, and calculate three degradation characteristic quantities: battery SOP degradation. Engine maximum power degradation Power loading rate degradation ;
[0053] A nominal power supply characteristic curve is established based on the nominal characteristic quantity, and a degraded power supply characteristic curve is established based on the current characteristic quantity. The actual power upper limit constraint of the two curves is defined.
[0054] Within the nominal acceleration time, calculate the area difference enclosed by the energy supply characteristic curves before and after degradation, i.e., the degradation energy gap. The calculation is performed using analytical formulas for both unsaturated and saturated operating conditions.
[0055] Based on the principle of area compensation, delay The increased area between the degraded energy supply curve and the load curve equals the degraded energy deficit. Establish compensation equations and solve for the acceleration time extension. Output degraded actual acceleration time .
[0056] Specifically, it includes:
[0057] This embodiment defines three degradation features as core input parameters for quantifying the degree of performance degradation. All three features are defined based on the difference between the nominal state before degradation and the current state after degradation.
[0058] (1) Battery SOP degradation amount, denoted as The unit is kW. This quantity is defined as the decrease in the battery's instantaneous discharge power relative to its nominal value. It is calculated in real time by the battery management system, which outputs the current instantaneous discharge power and compares it with the factory nominal value. This degradation reflects the decrease in the instantaneous power supply capacity of the power battery due to aging, temperature, or changes in state of charge. Physically, the battery bears the base power (step segment) in the power supply curve. The degradation directly leads to an overall downward shift in the power supply curve, which is reflected in the power-time graph as a uniformly expanding rectangular area loss between the power supply curve and the curve before degradation throughout the entire acceleration period.
[0059] The ,in, This refers to the nominal value of the battery's instantaneous discharge power. This represents the actual instantaneous discharge power of the battery.
[0060] (2) The maximum power degradation of the engine, denoted as The unit is kW. This quantity is defined as the decrease in the engine's maximum target power relative to its nominal value. It is obtained by comparing the current maximum target power, provided in real time by the engine management system, with the factory nominal value. This degradation reflects the decrease in the engine's steady-state output capability due to mechanical wear and aging. The degradation of the power supply curve leads to a decrease in the upper limit of the power supply curve in the saturation segment, which is reflected in the power-time graph as a downward shift of the steady-state power supply curve and a reduction in the engine saturation time.
[0061] The ,in, This is the engine's nominal maximum power value. This is the actual value of the engine's maximum power.
[0062] (3) Engine power load rate degradation, denoted as The unit is kW / s. This quantity is defined as the decrease in engine power load rate relative to the nominal value, obtained through bench calibration. Pre-stored in VCU, and compared with the current EMS real-time estimate. The comparison shows that the current power load rate is obtained by dynamically estimating it through the engine management system and comparing it with the nominal value, i.e., the aforementioned... ,in, This is the nominal value of the engine power load rate. This represents the actual value of the engine power load rate. This degradation reflects the decrease in the engine's dynamic response capability due to increased mechanical hysteresis and slower response. The degradation leads to a decrease in the slope of the power supply curve, which is reflected in the power-time graph as a gentler slope and a shorter engine saturation time. As the slope is extended, the area of the triangle (or trapezoid) formed between the slope and the ideal curve increases.
[0063] Based on the three degradation characteristics mentioned above, this embodiment establishes energy supply characteristic curves for the nominal state before degradation and the current state after degradation, respectively. By comparing the area enclosed by the two curves on the power-time diagram, the energy loss caused by degradation is quantified.
[0064] like Figure 2 As shown, the nominal power supply characteristic curve (pre-degradation baseline curve) can be represented as:
[0065] ;
[0066] in, This is the nominal energy supply characteristic curve. This refers to the nominal engine saturation time.
[0067] The degraded energy supply characteristic curve (current actual curve) can be represented as:
[0068] ;
[0069] in, The curve shows the energy supply characteristics after degradation. Indicates the current power loading rate. This indicates the engine saturation time after degradation.
[0070] The saturation time of the degraded engine is:
[0071] ;
[0072] The area difference between the two energy supply characteristic curves on the Pt diagram represents the energy gap caused by degradation, and is the core input for area compensation calculation in this invention. The overall upper limit constraint for the energy supply curves is:
[0073] ;
[0074] That is, the actual power supply does not exceed the sum of the current battery SOP and the current engine maximum power at any time. This constraint ensures the physical feasibility of the power supply model.
[0075] This invention transforms the impact of degradation on acceleration performance into a problem of quantifying the area loss of the energy supply curve. At the nominal acceleration time... Within the ideal acceleration time calculated based on nominal characteristic quantities, the area difference enclosed by the energy supply curves before and after degradation is defined as the degradation energy gap. Its geometric meaning is: within the same time window, the total energy output less by the degraded dynamic system relative to the nominal state can be expressed as:
[0076] ;
[0077] The degradation energy gap is contributed by three degradation characteristics, based on the nominal acceleration time. With degradation saturation time The relationship is calculated under two working conditions:
[0078] Operating Condition 1: ≤ (Unsaturated working condition, still in the slope section after degradation);
[0079] If the engine power does not reach its maximum value after degradation at the end of acceleration, the degradation energy gap can be obtained by integration:
[0080]
[0081] ;
[0082] The first term is the rectangular area loss caused by battery SOP degradation, and the second term is the triangular area increase caused by the decrease in ramp slope due to power loading rate degradation.
[0083] Operating Condition 2: > (Saturation condition);
[0084] Under saturated conditions, the degradation energy gap includes both the ramp section and the steady-state section, therefore piecewise integration is required:
[0085] ;
[0086] Phase 1 At this point, it is still in the slope stage:
[0087]
[0088] ;
[0089] Substitution It can be obtained;
[0090] ;
[0091] Phase Two Power loading reaches saturation:
[0092]
[0093] ;
[0094] After integration and simplification, we get:
[0095] ;
[0096] The difference between the last two items is the difference in the area of the engine saturation triangle before and after degradation, representing the change in energy loss in the slope section caused by the combined degradation of maximum power and load rate.
[0097] Degradation energy gap Characterizes the nominal acceleration time of the degraded powertrain. The energy output is less than the nominal state. According to the principle of energy conservation, this energy deficit must be addressed by extending the acceleration time (i.e., in...). (Then, the driving force continues) to compensate, so that the vehicle can eventually reach the target speed. This compensation process is called area compensation: in the Pt diagram, the newly added area between the degraded power supply curve and the load curve during the delay period is exactly equal to... :
[0098] ;
[0099] Based on the principle of area compensation, a delay compensation equation is established: delay The net energy output of the internal degradation dynamic system equals the degradation energy deficit. Based on the delay start time (i.e.... (Time) Power supply status, solve in two cases :
[0100] Operating Condition 1: ≤ (Unsaturated working condition, still in the slope section after degradation);
[0101] ;
[0102] in, This refers to the power output of the degraded power supply curve at the theoretical acceleration time point. .
[0103] Organized into a list of things to do The quadratic equation in one variable, taking the positive root in a physical sense:
[0104] ;
[0105] Boundary constraint verification is also required.
[0106] ;
[0107] If you obtain This allows the compensation process to span Then, at the segmentation point—the remaining gap after compensation for the slope section—the steady-state section compensates for it with maximum net power.
[0108] ;
[0109] in The energy already compensated for on the slope section can be expressed as:
[0110] ;
[0111] Operating Condition 2: > (Saturation condition);
[0112] The engine has maintained maximum power at all times, and the power supply during the extended period remains constant. The compensation equation degenerates into a linear equation:
[0113] ;
[0114] The delay time is obtained by solving:
[0115] .
[0116] Figure 2 This is a schematic diagram comparing the energy supply characteristic curves before and after degradation (Pt coordinate system, unsaturated condition).
[0117] Figure 3 A schematic diagram comparing the energy supply characteristic curves before and after degradation (Pt coordinate system, saturated condition).
[0118] On the other hand, this embodiment also provides an electronic device, including a memory, a processor, and a computing program stored in the memory and executable on the processor, wherein the processor implements the method when executing the computing program.
[0119] On the other hand, this embodiment also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the method.
[0120] Example 2
[0121] This embodiment provides a system for assessing the acceleration performance impact of hybrid electric vehicle drive performance degradation, including:
[0122] Feature acquisition module: Reads the nominal feature quantities stored in the VCU (Volume Control Unit). , , ), and collects current characteristic quantities in real time via CAN bus ( , , ) .
[0123] in, This is the nominal value of the engine power load rate. This represents the actual value of the engine power loading rate.
[0124] Degradation Calculation Module: Calculates three degradation characteristics. , , Quantify the current degree of degradation of each component.
[0125] Energy supply curve establishment module: Based on nominal and current characteristic quantities, establish nominal energy supply characteristic curves and degraded energy supply characteristic curves respectively, and calculate the engine saturation time for each. and .
[0126] Energy Gap Calculation Module: Obtain Nominal Acceleration Time ,according to and Determine the operating conditions based on the relationship and calculate the degradation energy gap according to the corresponding formula. (That is, the difference in area enclosed by the two energy supply curves on the Pt diagram).
[0127] Area compensation solution module: based on degradation energy gap Based on the current degraded power supply state, establish an area compensation equation and solve for the acceleration time extension according to the operating conditions. Find the algebraic closed solution and verify the boundary constraints.
[0128] Evaluation output module: Output acceleration time extension Actual acceleration time after degradation And the contribution decomposition of each of the three degenerate features to the acceleration time extension; when When the threshold is exceeded, a performance degradation warning is triggered.
[0129] The above are merely preferred embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A method for evaluating the influence of acceleration performance degradation of hybrid electric drive vehicle driving performance, characterized by, include: Obtain the nominal and current characteristic quantities of the hybrid electric vehicle power system, and determine the degradation amount of instantaneous battery discharge capacity, the degradation amount of maximum engine power, and the degradation amount of engine power loading rate based on the difference between the nominal and current characteristic quantities. A nominal power supply characteristic curve is established based on the nominal characteristic quantity, and a degraded power supply characteristic curve is established based on the current characteristic quantity; Within the nominal acceleration time, the degradation energy gap is calculated based on the area difference between the nominal energy supply characteristic curve and the degradation energy supply characteristic curve. Based on the principle of area compensation, a compensation equation is established according to the degradation energy gap, and the acceleration time extension is solved according to the compensation equation to output the actual acceleration time after degradation.
2. The method of claim 1, wherein, The degradation of battery instantaneous discharge capacity, engine maximum power, and engine power load rate are determined based on the difference between the nominal characteristic quantity and the current characteristic quantity, including: The degradation amount of the battery's instantaneous discharge capacity is determined based on the comparison between the current instantaneous discharge capacity provided in real time by the battery management system and the nominal instantaneous discharge capacity at the factory. The engine maximum power degradation is determined based on the comparison between the current maximum target power provided in real time by the engine management system and the factory-nominated maximum target power. The degradation amount of the engine power loading rate is determined by comparing the current power loading rate dynamically estimated by the engine management system with the nominal power loading rate calibrated on the bench.
3. The method of claim 1, wherein, Establishing a nominal power supply characteristic curve based on the nominal characteristic quantity, and establishing a degraded power supply characteristic curve based on the current characteristic quantity, including: Calculate the nominal engine saturation time based on the nominal engine maximum power and nominal power load rate, and establish the nominal energy supply characteristic curve based on the nominal engine saturation time; Calculate the current engine saturation time based on the current engine maximum power and current power loading rate, and establish the degradation power supply characteristic curve based on the current engine saturation time.
4. The method of claim 1, wherein, Within the nominal acceleration time, the degradation energy gap is calculated based on the area difference between the nominal energy supply characteristic curve and the degradation energy supply characteristic curve, including: Determine the relationship between the nominal acceleration time and the current engine saturation time; If the nominal acceleration time is less than or equal to the current engine saturation time, the degradation energy gap is calculated according to the analytical formula corresponding to the unsaturated condition. If the nominal acceleration time is greater than the current engine saturation time, the degradation energy gap is calculated according to the analytical formula corresponding to the saturation condition.
5. The method according to claim 4, characterized in that, The degradation energy gap is calculated according to the analytical formula corresponding to the unsaturated operating condition, including: Based on the instantaneous discharge capacity degradation of the battery, the power loading rate degradation, and the nominal acceleration time, calculate the rectangular area loss caused by battery degradation and the triangular area increment caused by loading rate degradation, and use the sum of the rectangular area loss and the triangular area increment as the degradation energy gap.
6. The method according to claim 4, characterized in that, The degradation energy gap is calculated according to the analytical formula corresponding to the saturated condition, including: The nominal acceleration time is divided into a ramp phase and a steady-state phase based on the current engine saturation time. Calculate the area difference of the energy supply curves before and after degradation in the slope stage and the steady-state stage respectively, and take the sum of the area differences between the two stages as the degradation energy gap.
7. The method according to claim 1, characterized in that, Based on the principle of area compensation, a compensation equation is established according to the degradation energy gap, and the acceleration time extension is solved according to the compensation equation, including: Determine the relationship between the nominal acceleration time and the current engine saturation time; If the nominal acceleration time is less than or equal to the current engine saturation time, a univariate quadratic compensation equation is established, and the physical positive root is taken as the acceleration time extension. If the nominal acceleration time is greater than the current engine saturation time, a linear compensation equation is established, and the acceleration time extension is solved directly.
8. The method according to claim 1, characterized in that, After taking the physical positive root as the acceleration time extension, the method further includes: Verify whether the compensation process exceeds the current engine saturation time; If the process is to be crossed, the compensation process will be divided into a slope section compensation and a steady-state section compensation. The slope section will be compensated using the current degraded power supply curve, and the remaining gap will be compensated by the steady-state section using the maximum net power.
9. A system for evaluating the impact of acceleration performance degradation on the driving performance of hybrid electric vehicles, characterized in that, include: The feature acquisition module is used to acquire the nominal feature quantity and the current feature quantity, and determine the instantaneous discharge capacity degradation of the battery, the maximum power degradation of the engine, and the power loading rate degradation of the engine based on the difference between the nominal feature quantity and the current feature quantity. The power supply curve establishment module is connected to the feature quantity acquisition module and is used to establish a nominal power supply characteristic curve based on the nominal feature quantity, and to establish a degraded power supply characteristic curve based on the current feature quantity. An energy gap calculation module, connected to the energy supply curve establishment module, is used to calculate the degradation energy gap within the nominal acceleration time based on the area difference between the nominal energy supply characteristic curve and the degradation energy supply characteristic curve. The area compensation solution module is connected to the energy gap calculation module. It is used to establish a compensation equation based on the area compensation principle and the degradation energy gap, and to solve for the acceleration time extension based on the compensation equation. The evaluation output module, connected to the area compensation solution module, is used to output the actual acceleration time after degradation.
10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the method of any one of claims 1-8.