CN118182442A - Range extender control method and device based on gradient identification, electronic equipment and medium - Google Patents
Range extender control method and device based on gradient identification, electronic equipment and medium Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/40—Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
- B60L50/62—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles charged by low-power generators primarily intended to support the batteries, e.g. range extenders
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- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
- B60W20/12—Controlling the power contribution of each of the prime movers to meet required power demand using control strategies taking into account route information
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/02—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to ambient conditions
- B60W40/06—Road conditions
- B60W40/076—Slope angle of the road
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Abstract
The application provides a gradient identification-based range extender control method, a gradient identification-based range extender control device, electronic equipment and a gradient identification-based range extender medium. The method comprises the following steps: receiving a first pitch angle and a valid bit signal, and acquiring a second pitch angle; judging whether the first pitch angle is effective or not according to the effective bit signal, setting the gradient as the first pitch angle when the first pitch angle is effective, correcting the second pitch angle when the first pitch angle is ineffective, and taking the corrected second pitch angle as the gradient; when the vehicle is in an uphill state, determining a generated power increasing value according to the current speed and the gradient of the vehicle, and adjusting the generated power of the range extender by using the generated power increasing value; when the vehicle is in a downhill state, a power generation power adjustment strategy is determined according to the relation between the gradient and a preset power generation power adjustment gradient threshold value, and the power generation power of the range extender is adjusted according to the power generation power adjustment strategy. The application improves the gradient recognition precision and realizes accurate range extender energy management and power generation adjustment.
Description
Technical Field
The application relates to the technical field of new energy automobiles, in particular to a range extender control method and device based on gradient identification, electronic equipment and a medium.
Background
With the development of electric automobile technology, extended range automobiles are becoming more and more important as a solution combining the advantages of electric drive and conventional internal combustion engines. The automobile charges a battery through the built-in range extender (an auxiliary engine), and the endurance mileage of the automobile is improved. Nevertheless, energy management systems for extended range automobiles present challenges, particularly when traveling on a hill.
The ramp control strategy is critical to the energy efficiency and cruising performance of the extended range vehicle. When the vehicle is driving on a slope, the energy management system needs to adjust the power generation strategy and the energy distribution in time according to the gradient change so as to keep the optimal driving performance and the optimal energy utilization rate. In the prior art, extended range automobiles rely on simpler grade signals to adjust their energy management and power generation strategies. These grade signals are typically derived from the navigation system or tilt sensor of the vehicle, but the accuracy and reliability of these signals are often limited by the accuracy of the sensor and environmental factors.
The main problem in the prior art is that the accuracy of the gradient signal is insufficient, so that the energy management and the generated power adjustment of the range extender cannot be accurately implemented, and the drivability and the economy of the vehicle are affected. Furthermore, while modern automobiles are equipped with high-order intelligent driving systems, these systems are not effectively utilized to optimize the energy management strategy of extended range automobiles while traveling on a slope. Therefore, there is an urgent need to develop a method capable of accurately identifying the gradient and optimizing the range extender control strategy accordingly, so as to improve the performance and energy efficiency of the range extender automobile under various driving conditions.
Disclosure of Invention
In view of the above, the embodiment of the application provides a range extender control method, a device, electronic equipment and a medium based on gradient identification, so as to solve the problem that in the prior art, the gradient signal accuracy is low, and the energy management and the generated power adjustment of the range extender cannot be accurately performed.
In a first aspect of the embodiment of the present application, a range extender control method based on gradient identification is provided, including: receiving a first pitch angle and a valid bit signal sent by an inertial navigation system, and acquiring a second pitch angle calculated by a vehicle chassis system; judging whether the first pitch angle is effective or not according to the effective bit signal, setting the gradient as the first pitch angle when the first pitch angle is effective, correcting the second pitch angle when the first pitch angle is ineffective, and taking the corrected second pitch angle as the gradient; determining a gradient threshold range according to the current residual oil quantity of the vehicle, comparing the gradient with the gradient threshold range, and performing start-stop control on the range extender according to a comparison result so as to start or close the range extender; when the vehicle is in an uphill state, determining a generated power increasing value according to the current speed and the gradient of the vehicle, and adjusting the generated power of the range extender by using the generated power increasing value; when the vehicle is in a downhill state, a corresponding power generation power adjustment strategy is determined according to the relation between the gradient and a preset power generation power adjustment gradient threshold value, and the power generation power of the range extender is adjusted according to the power generation power adjustment strategy.
In a second aspect of the embodiment of the present application, there is provided a range extender control device based on gradient identification, including: the receiving module is configured to receive a first pitch angle and a valid bit signal sent by the inertial navigation system and acquire a second pitch angle calculated by the vehicle chassis system; the judging module is configured to judge whether the first pitch angle is effective or not according to the effective bit signal, set the gradient as the first pitch angle when the first pitch angle is effective, correct the second pitch angle when the first pitch angle is ineffective, and take the corrected second pitch angle as the gradient; the control module is configured to determine a gradient threshold range according to the current residual oil quantity of the vehicle, compare the gradient with the gradient threshold range, and perform start-stop control on the range extender according to a comparison result so as to start or close the range extender; the first adjusting module is configured to determine a generated power increasing value according to the current speed and the gradient of the vehicle when the vehicle is in an ascending state, and adjust the generated power of the range extender by using the generated power increasing value; the second adjusting module is configured to determine a corresponding power adjusting strategy according to the relation between the gradient and a preset power adjusting gradient threshold when the vehicle is in a downhill state, and adjust the power of the range extender according to the power adjusting strategy.
In a third aspect of the embodiments of the present application, there is provided an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the above method when executing the computer program.
In a fourth aspect of the embodiments of the present application, there is provided a computer readable storage medium storing a computer program which, when executed by a processor, implements the steps of the above method.
The above at least one technical scheme adopted by the embodiment of the application can achieve the following beneficial effects:
Receiving a first pitch angle and a valid bit signal sent by an inertial navigation system, and acquiring a second pitch angle calculated by a vehicle chassis system; judging whether the first pitch angle is effective or not according to the effective bit signal, setting the gradient as the first pitch angle when the first pitch angle is effective, correcting the second pitch angle when the first pitch angle is ineffective, and taking the corrected second pitch angle as the gradient; determining a gradient threshold range according to the current residual oil quantity of the vehicle, comparing the gradient with the gradient threshold range, and performing start-stop control on the range extender according to a comparison result so as to start or close the range extender; when the vehicle is in an uphill state, determining a generated power increasing value according to the current speed and the gradient of the vehicle, and adjusting the generated power of the range extender by using the generated power increasing value; when the vehicle is in a downhill state, a corresponding power generation power adjustment strategy is determined according to the relation between the gradient and a preset power generation power adjustment gradient threshold value, and the power generation power of the range extender is adjusted according to the power generation power adjustment strategy. The application improves the gradient recognition precision and realizes accurate range extender energy management and power generation adjustment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a range extender control method based on gradient identification according to an embodiment of the present application;
Fig. 2 is a schematic structural diagram of a range extender control device based on gradient recognition according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate, such that embodiments of the application may be practiced otherwise than as specifically illustrated and described herein, and that the objects identified by "first," "second," etc. are generally of the same type and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
Furthermore, it should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
The following describes the technical scheme of the present application in detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic flow chart of a range extender control method based on gradient identification according to an embodiment of the present application. The range extender control method of fig. 1 based on grade identification may be performed by a vehicle control system. As shown in fig. 1, the range extender control method based on gradient identification specifically includes:
S101, receiving a first pitch angle and a valid bit signal sent by an inertial navigation system, and acquiring a second pitch angle calculated by a vehicle chassis system;
S102, judging whether a first pitch angle is effective or not according to an effective bit signal, setting the gradient as the first pitch angle when the first pitch angle is effective, correcting a second pitch angle when the first pitch angle is ineffective, and taking the corrected second pitch angle as the gradient;
s103, determining a gradient threshold range according to the current residual oil quantity of the vehicle, comparing the gradient with the gradient threshold range, and performing start-stop control on the range extender according to a comparison result so as to start or close the range extender;
s104, when the vehicle is in an uphill state, determining a generated power increasing value according to the current speed and the gradient of the vehicle, and adjusting the generated power of the range extender by using the generated power increasing value;
s105, when the vehicle is in a downhill state, determining a corresponding power generation adjustment strategy according to the relation between the gradient and a preset power generation power adjustment gradient threshold value, and adjusting the power generation power of the range extender according to the power generation power adjustment strategy.
In some embodiments, before determining from the valid bit signal whether the first pitch angle is valid, the method further comprises:
Calculating a second pitch angle of the vehicle by using a vehicle chassis system, and monitoring the current speed of the vehicle in real time; and monitoring the current residual oil quantity of the vehicle in real time by using an instrument, receiving a start failure zone bit sent by the range extender control system, and sending a second pitch angle, the current speed of the vehicle, the current residual oil quantity of the vehicle and the start failure zone bit to the vehicle control system.
Specifically, in the vehicle state identification phase, the system first needs to acquire and process the running state information of the vehicle to ensure accurate implementation of subsequent gradient judgment and range extender control strategies. In practical applications, the acquisition of the vehicle running state information includes the following contents:
And receiving a vehicle speed signal provided by a chassis system and a calculated pitch angle alpha 2 signal. The vehicle speed signal reflects the real-time operating speed of the vehicle, while the pitch angle α2 signal provides the degree of inclination of the vehicle relative to the horizontal, although this signal may be subject to a number of factors and some error.
And receiving a residual oil quantity signal sent by the instrument panel. This signal directly influences the start-stop decision of the range extender, in particular ensuring the continuity of the energy supply when the residual oil quantity is low.
And receiving a start failure flag bit sent by the range extender control system. The signal is critical to identify potential operational problems of the range extender, and can help the system take measures in time to avoid interruption of energy supply at critical moments.
Further, all collected information (vehicle speed signal, pitch angle α2 signal, residual oil amount signal, start failure flag) will be transmitted to the vehicle control system, which will comprehensively analyze such information to develop the most appropriate energy management and range extender control strategy.
In one or more examples, the vehicle control system may utilize the received data to perform a number of functions, including, but not limited to: a) Based on the vehicle speed signal and the pitch angle alpha 2 signal, the road condition change (such as the running on a slope) to be faced is predicted, and the running mode of the range extender is adjusted in advance. b) And optimizing a start-stop strategy of the range extender according to the residual oil quantity signal and the predicted driving condition, and ensuring that high-efficiency energy supply can be maintained when the oil quantity is low. c) And the health state of the range extender is monitored by using the start failure zone bit, and once the condition of continuous start failure is found, preventive measures can be taken to avoid emergency in the driving process.
By the method, intelligent control of the range extender can be realized on the basis of integrating various running state information of the vehicle, so that energy efficiency and reliability of the range extender automobile in the process of driving on a slope are improved.
In some embodiments, determining whether the first pitch angle is valid according to the valid bit signal, setting the slope to the first pitch angle when the first pitch angle is valid, correcting the second pitch angle when the first pitch angle is invalid, and taking the corrected second pitch angle as the slope includes:
in particular, the slope α identification is a very critical ring in the present technical solution, and is aimed at precisely controlling the energy management and the power generation of the extended range automobile under different slope conditions, so as to optimize the performance and the economy of the automobile. The specific implementation process and steps of slope α identification will be explained in detail below in connection with specific embodiments:
First, the present system receives a pitch angle α1 signal from the inertial navigation system of the higher-order intelligent driving system, which is relatively accurate for directly representing the current grade (uphill or downhill) of the vehicle. At the same time, the system also receives a second pitch angle alpha 2 signal from the chassis calculation as an auxiliary signal for slope calculation when the first pitch angle alpha 1 signal is not available.
Further, when the first pitch angle α1 signal is active, the system directly sets the grade α to the first pitch angle α1, at which time energy management and range extender control may be based on this accurate value. When the first pitch angle α1 signal is inactive, the system will use the corrected second pitch angle α2 signal to determine the slope α, i.e., α=k×α2, where k is a correction factor. In this case, energy management and control of the increase would take more conservative measures. Wherein alpha is positive number when ascending and negative number when descending.
In some embodiments, correcting the second pitch angle includes:
Recording a first pitch angle and a second pitch angle corresponding to the vehicle when the first pitch angle is effective, counting the recording times, and keeping the value of the second pitch angle unchanged when the recording times are smaller than or equal to a time threshold value; when the recording times are larger than the times threshold, calculating a correction coefficient by using a preset accumulated averaging formula, and adjusting the value of the second pitch angle by using the correction coefficient to obtain a corrected second pitch angle.
Specifically, in the normal running process of the vehicle, when a first pitch angle alpha 1 signal of the high-order intelligent driving system is valid, the system can record the value of the first pitch angle alpha 1 and the value of a second pitch angle alpha 2 calculated by the vehicle chassis system at the same time. The system will continuously monitor and record both pitch angle data while counting the number n of active recordings.
Further, in the second pitch angle correction stage, when the number of times of recording n is less than or equal to a set number of times threshold (for example, 5 times), the system considers that the existing data is not sufficient for accurate correction, thus keeping the value of the second pitch angle α2 unchanged; when the recording times n is greater than the times threshold, the system calculates a correction coefficient k of the second pitch angle alpha 2 by using an accumulated averaging method, and a specific calculation formula is as follows: k= [5α2+n times α1 sum-5 (n times α1 sum/n) ]/n. In this formula, α2 is the current second pitch angle value and α1 is the effective first pitch angle value. And finally, correcting the second pitch angle alpha 2 by using the calculated correction coefficient k to obtain a corrected second pitch angle value for more accurate gradient judgment. Through the above calculation, a mapping relation table corresponding to k coefficients of different second pitch angles α2 can be obtained, and it should be noted that the mapping relation table is valid only for the current vehicle.
In one example, in an actual application scenario, the system may use the corrected second pitch angle value in combination with other vehicle sensor data, such as vehicle speed, acceleration, etc., to achieve more accurate and dynamic grade identification. The combined use can further optimize the power generation strategy of the range extender, and particularly ensures that the range extender can be started and stopped at the best moment under the condition of complex road conditions and variable gradients, thereby improving the energy utilization efficiency and the running performance of the vehicle.
By using the correction factor k, the value of the second pitch angle α2 can be adjusted according to the actual situation, ensuring that the system is able to perform relatively accurate grade determination and corresponding energy management even when high-order navigation signals are not available. By the method of the embodiment, the system can more accurately identify and respond to the gradient of the vehicle in various driving environments, so that more efficient and accurate energy management and range extender control are realized. The method effectively improves the performance and economy of the extended range automobile in the ramp running process, and simultaneously enhances the driving safety and comfort.
In some embodiments, determining a gradient threshold range according to the current residual oil amount of the vehicle, comparing the gradient with the gradient threshold range, and performing start-stop control on the range extender according to a comparison result, wherein the method comprises the following steps:
inquiring the mapping relation by utilizing the current residual oil quantity of the vehicle according to the mapping relation between the preset residual oil quantity and the gradient threshold value range to obtain the gradient threshold value range;
When the gradient is within the gradient threshold range and the range extender is judged to need to be started, the vehicle control system sends a starting instruction to the range extender so as to control the range extender to absorb oil through the oil pump to generate electricity; when the gradient is not within the gradient threshold range, the vehicle control system sends a closing instruction to the range extender to control the range extender to stop generating power.
Specifically, the range extender control is a key part of the technical scheme about how to efficiently utilize the range extender to generate power for a vehicle, and the embodiment of the application particularly emphasizes the steps of intelligently adjusting the start-stop and power generation behaviors of the range extender according to the actual ramp condition and the residual fuel quantity of the vehicle. The following will describe the start-stop control process of the range extender in detail with reference to specific embodiments, and may specifically include the following:
In the range extender control system, a residual fuel quantity variable x is first set, which represents the current fuel level in the vehicle fuel tank. The system has preset slope thresholds y and z, based on the different amounts x of remaining oil, which define the slope range over which the range extender can start and generate power for a particular amount of oil. The thresholds y and z are obtained through the previous oil tank oil absorption experiment, so that the range extender can be ensured to effectively absorb oil in the gradient range to generate electricity.
Further, the system monitors the current remaining oil amount x and the calculated gradient α in real time while the vehicle is traveling. If the current grade value alpha of the vehicle is within the range defined by z and y (z.ltoreq.alpha.ltoreq.y), and if the system detects that the range extender is in need of starting (for example, the battery is low and needs to be charged), the system instructs the range extender to start and absorbs oil from the oil tank through the oil pump to generate electricity. Conversely, when the grade is not within the grade threshold range (α < z, or α > y), the vehicle control system sends a shutdown command to the range extender to control the range extender to stop generating power.
The start-stop control based on the real-time oil quantity and the gradient information can ensure that the range extender is effectively started when the range extender is most needed, and meanwhile, the difficulty in oil absorption or the failure in starting caused by unsuitable gradient is avoided. Through such control logic, the range extender can effectively generate power for the vehicle under various driving conditions, particularly under different ramp conditions, and the continuity and efficiency of the power generation process are ensured. The intelligent control not only improves the energy utilization efficiency of the range-extending automobile, but also enhances the running stability and reliability of the automobile.
In some embodiments, determining the generated power increase value based on the current vehicle speed and grade comprises:
Inquiring a preset power generation power accurate control mapping relation or a power generation power conservation control mapping relation by utilizing the current speed and gradient of the vehicle to obtain a power generation power increase value in an accurate control mode or a power generation power increase value in a conservation control mode;
The power generation accurate control mapping relation or the power generation conservation control mapping relation is stored in a two-dimensional table, the abscissa in the two-dimensional table is the current speed of the vehicle, the ordinate is the gradient, and the table lookup value is the power generation increase value.
Specifically, the embodiment of the application also provides a method for dynamically adjusting the power generation power according to the speed and the gradient in the range-extended automobile, so as to improve the energy utilization efficiency and adapt to different running conditions. The following describes the process of controlling the generated power of the range extender in detail with reference to specific embodiments, and may specifically include the following:
The generated power adjustment strategy defines: the method comprises two generated power adjustment modes: a precise control mode and a conservative control mode. Each mode determines the increasing value of the generated power according to the current speed and gradient of the vehicle, and the specific differences are as follows: the accurate control mode aims at balancing the power generation efficiency and the economy, and unnecessary energy waste is avoided; while the conservative control mode focuses on ensuring sufficient power supply, the power demand of the vehicle is preferentially ensured, especially in the scene of faster energy consumption.
Further, the application of the generated power adjustment data table: the power generation adjustment strategy relies on a preset two-dimensional data table that records the power generation increase at various vehicle speeds and gradients. The specific application process is as follows: when the vehicle climbs a slope, the control system refers to the current speed and the slope, and searches a corresponding generated power increasing value in a corresponding generated power control mapping table; for the precise control mode, the table provides optimized generated power increment values under various vehicle speed and gradient combinations to reduce unnecessary energy consumption; for the conservative control mode, a set of generated power increment values aiming at ensuring sufficient electric quantity supply are provided in the table.
In one example, the following are the generated power precise control map and the generated power conservative control map, respectively:
TABLE 1 Power generation accurate control mapping relationship table
The method for calibrating the added value under the accurate control is that under the environment bin of 20 ℃, two groups of vehicles with the ramp of 0 and the ramp alpha run at the speed of 0, 19, 20, 40, 70 and 90kph, the driving power difference value is the added value calibration approach value, and meanwhile, the obtained added value of the generated power is combined with the high generation efficiency point on the generation efficiency map.
TABLE 2 Power conservation control mapping Table
The method for calibrating the increment value under the conservative control is to obtain the increment value of the generated power by taking the increment value of the generated power under the accurate control as the calibration lower limit and combining the high generation efficiency point on the generation efficiency map, wherein the error of alpha 1 and alpha 2 is within 20% through statistical analysis.
In one example, during actual driving of the vehicle, the control system may adjust the generated power of the range extender in real time according to the climbing situation of the vehicle. By reading the current vehicle speed and gradient value, and searching the corresponding generated power increasing value in a preset generated power control mapping relation table (table 1 or table 2). For example, in the accurate control mode, if the vehicle speed is 40kph and the gradient is 5, the table look-up determines that the generated power increase value is 8, and thus the generated power is adjusted according to the increase value 8. In the conservative control mode, a higher increment value (e.g., 10) may be selected under the same conditions to ensure that there is sufficient power to cope with the potentially high power consumption situation.
By the method of the embodiment, the energy management efficiency of the range-extended automobile under different running conditions, particularly during climbing is effectively improved, the stability of electric energy supply is ensured, and meanwhile, the economy is also considered, so that the energy is optimally used.
In some embodiments, determining a corresponding power adjustment strategy according to a relationship between a grade and a preset power adjustment grade threshold, and adjusting the power of the range extender according to the power adjustment strategy includes:
Comparing the gradient with a power generation power adjustment gradient threshold, and when the gradient is within a first power generation power adjustment gradient threshold range, not adjusting the power generation power; when the gradient is within the second power generation power adjustment gradient threshold range, reducing the power generation power according to the actual recovered power; when the gradient is within the gradient threshold value range of the third generation power adjustment, the range extender is controlled to stop generating electricity;
the gradient absolute values corresponding to the first power generation gradient adjustment threshold, the second power generation gradient adjustment threshold and the third power generation gradient adjustment threshold become larger in sequence.
Specifically, the embodiment of the application also provides a method for adjusting the power generation power according to the gradient in the range-extending automobile, which aims to adjust the output of the range extender according to specific requirements under different gradient conditions so as to optimize the energy utilization efficiency and ensure the power supply. The following describes the process of controlling the generated power of the range extender in detail with reference to specific embodiments, and may specifically include the following:
The system first compares the detected current grade alpha with a preset power adjustment grade threshold to determine an applicable power adjustment strategy. For gradients in different ranges, the system adopts different power adjustment measures:
A first range: when the vehicle is on a slight downhill slope (for example, -2 is less than or equal to alpha < 0 under precise control and-3 is less than or equal to alpha < 0 under conservative control), the generation power does not need to be adjusted.
Second range: when the vehicle is on a moderate downhill slope (for example, -5 < alpha < -2 under accurate control and-7 < alpha < -3 under conservative control), the generated power is reduced according to the actual recovered power.
Third range: when the vehicle is on a steep downhill slope (for example, alpha < -5 under precise control and alpha < -7 under conservative control), the range extender stops, and power generation is stopped.
And a generation power adjustment execution stage: when the vehicle runs downhill, the control system calculates the proper generation power adjustment value in real time. The specific adjustment method depends on which threshold range the current gradient falls within, and the control mode (precise control or conservative control). For adjustment in each gradient range, the system can dynamically adjust the power generation power of the range extender according to a set strategy, so that the power generation efficiency is optimized, and meanwhile, energy waste is avoided.
In further embodiments, the system may integrate more sensor data (e.g., accelerometer, GPS, etc.) to enhance the accuracy of grade detection, thereby further optimizing the generated power adjustment strategy. In addition, the system can also predict the gradient condition to be encountered by learning the driving habit and the route preference of the driver, so as to adjust the power generation strategy of the range extender in advance, thereby realizing higher energy efficiency and better driving experience.
By the method of the embodiment, the power generation power of the range extender can be intelligently adjusted under different downhill driving conditions, the recovery energy of the vehicle is effectively utilized, the energy consumption is reduced, the stability of power supply is ensured, and therefore the overall energy efficiency and performance of the range extender automobile are improved.
In some embodiments, the method further comprises:
respectively monitoring and recording the start failure times of the range extender under the conditions of different gradients, comparing the start failure times of the range extender with a preset failure time threshold, and setting the range extender to be in a start prohibition state when the failure time threshold is exceeded;
continuously monitoring the residual oil quantity of the vehicle after the range extender is prohibited from being started, and maintaining the prohibited starting state of the range extender when the residual oil quantity of the vehicle is the target oil quantity until the residual oil quantity of the vehicle is no longer the target oil quantity, and setting the range extender to be in a starting state; and when the residual oil quantity of the vehicle is not the target oil quantity, maintaining the range extender in a start-forbidden state until the vehicle is electrified again, and setting the range extender in a start-able state.
Specifically, the fault diagnosis of the range extender combined with the gradient provided by the embodiment of the application is a mechanism for improving the reliability of the range extender automobile, and whether potential faults exist is judged by monitoring whether the range extender is started successfully under different gradient conditions. The implementation process of the gradient-based fault diagnosis method is described in detail below with reference to specific embodiments, and may specifically include the following:
Recording the number of start failure times of the range extender: the system can monitor and record the number of start failures of the range extender under two conditions respectively: when the vehicle is on any grade (α+.0) and when the vehicle is on a flat road (α=0). Counters are set for these two cases respectively: m1 is used to record the number of times the vehicle fails to start on the hill and m2 is used to record the number of times the vehicle fails to start on the road.
Further, fault diagnosis logic is set: for range extender start on a ramp, if m1 (the number of times the range extender fails to start under non-flat road conditions) is greater than or equal to 2, the system will determine that there is a potential failure and prohibit the range extender from starting. For range extender start on flat roads, if m2 (the number of times the range extender fails to start on flat roads) is greater than or equal to 1, it will also be determined as a fault and range extender start is prohibited.
Further, fault handling and recovery logic: once the range extender activation is disabled, the system will enter a wait state whose release depends on the current fuel level display of the vehicle. For example, if the displayed oil amount is 0, the system will maintain the start-up disabled state of the range extender until the oil amount is no longer displayed as 0; if the displayed oil is not 0, the system will wait until the vehicle is powered up again and will not allow the range extender to start.
Through this fault diagnosis and process flow, the system is able to respond in time when a continuous start failure is detected, preventing possible mechanical damage or other fault-induced problems by preventing further start of the range extender. The vehicle reliability is improved, the driving safety is guaranteed, and particularly, the vehicle is driven at a key moment when the range extender is required to provide auxiliary power.
According to the technical scheme provided by the embodiment of the application, the embodiment of the application has at least the following advantages:
By comprehensively utilizing the accurate gradient information provided by the high-order intelligent driving system and the data of the vehicle chassis system, the method can select a proper generation power control mode (accurate control or conservative control) according to real-time driving conditions, so that the optimal balance of energy use is realized. In the accurate control mode, the method optimizes energy use, reduces unnecessary energy consumption and improves economy; under the protection control mode, the driving performance and the safety are mainly ensured, and particularly under the condition of higher uncertainty of energy demand.
According to the technical scheme, the gradient data provided by the chassis is intelligently corrected, and the accuracy of the generated power control is improved by combining the accurate gradient information of the high-order intelligent driving system. The intelligent correction mechanism not only enhances the economy under the conservation control mode, but also ensures that the generated power is adjusted more finely so as to adapt to different gradient conditions, thereby effectively utilizing each energy and enhancing the energy efficiency of the whole vehicle.
By implementing the application, the work of the range extender is more fit with the actual running requirement, the energy management is optimized, the high-efficiency energy utilization under various ramp conditions is ensured, and the running continuity and stability of the vehicle are further ensured. In addition, the scheme also comprises fault prevention and diagnosis functions, potential faults are effectively prevented by continuously monitoring and intelligently analyzing the operation state of the range extender, and the overall reliability and safety of the system are improved.
The following are examples of the apparatus of the present application that may be used to perform the method embodiments of the present application. For details not disclosed in the embodiments of the apparatus of the present application, please refer to the embodiments of the method of the present application.
Fig. 2 is a schematic structural diagram of a range extender control device based on gradient recognition according to an embodiment of the present application. As shown in fig. 2, the range extender control device based on gradient identification includes:
the receiving module 201 is configured to receive a first pitch angle and a valid bit signal sent by the inertial navigation system, and acquire a second pitch angle calculated by using the vehicle chassis system;
A judging module 202 configured to judge whether the first pitch angle is valid according to the valid bit signal, set the gradient as the first pitch angle when the first pitch angle is valid, correct the second pitch angle when the first pitch angle is invalid, and take the corrected second pitch angle as the gradient;
the control module 203 is configured to determine a gradient threshold range according to the current residual oil quantity of the vehicle, compare the gradient with the gradient threshold range, and perform start-stop control on the range extender according to a comparison result so as to start or close the range extender;
The first adjustment module 204 is configured to determine a generated power increasing value according to the current speed and the gradient of the vehicle when the vehicle is in an uphill state, and adjust the generated power of the range extender by using the generated power increasing value;
The second adjustment module 205 is configured to determine a corresponding power adjustment strategy according to a relationship between a gradient and a preset power adjustment gradient threshold when the vehicle is in a downhill state, and adjust the power of the range extender according to the power adjustment strategy.
In some embodiments, the receiving module 201 of fig. 2 calculates a second pitch angle of the vehicle using the vehicle chassis system and monitors the current vehicle speed in real time before determining whether the first pitch angle is valid based on the valid bit signal; and monitoring the current residual oil quantity of the vehicle in real time by using an instrument, receiving a start failure zone bit sent by the range extender control system, and sending a second pitch angle, the current speed of the vehicle, the current residual oil quantity of the vehicle and the start failure zone bit to the vehicle control system.
In some embodiments, the determining module 202 of fig. 2 records the first pitch angle and the second pitch angle corresponding to the vehicle when the first pitch angle is valid, counts the number of records, and maintains the value of the second pitch angle unchanged when the number of records is less than or equal to the number threshold; when the recording times are larger than the times threshold, calculating a correction coefficient by using a preset accumulated averaging formula, and adjusting the value of the second pitch angle by using the correction coefficient to obtain a corrected second pitch angle.
In some embodiments, the control module 203 of fig. 2 queries the mapping relationship with the current remaining oil amount of the vehicle according to the mapping relationship between the predetermined remaining oil amount and the gradient threshold range, to obtain the gradient threshold range; when the gradient is within the gradient threshold range and the range extender is judged to need to be started, the vehicle control system sends a starting instruction to the range extender so as to control the range extender to absorb oil through the oil pump to generate electricity; when the gradient is not within the gradient threshold range, the vehicle control system sends a closing instruction to the range extender to control the range extender to stop generating power.
In some embodiments, the first adjustment module 204 of fig. 2 queries a predetermined power generation precise control mapping relationship or a power generation conservative control mapping relationship by using the current speed and the gradient of the vehicle to obtain a power generation increase value in the precise control mode or a power generation increase value in the conservative control mode; the power generation accurate control mapping relation or the power generation conservation control mapping relation is stored in a two-dimensional table, the abscissa in the two-dimensional table is the current speed of the vehicle, the ordinate is the gradient, and the table lookup value is the power generation increase value.
In some embodiments, the second adjustment module 205 of fig. 2 compares the grade to a power generation adjusted grade threshold, and does not adjust the power generation when the grade is within the first power generation adjusted grade threshold; when the gradient is within the second power generation power adjustment gradient threshold range, reducing the power generation power according to the actual recovered power; when the gradient is within the gradient threshold value range of the third generation power adjustment, the range extender is controlled to stop generating electricity; the gradient absolute values corresponding to the first power generation gradient adjustment threshold, the second power generation gradient adjustment threshold and the third power generation gradient adjustment threshold become larger in sequence.
In some embodiments, the fault diagnosis module 206 of fig. 2 monitors and records the number of range extender start failures of the vehicle under different gradient conditions, and compares the number of range extender start failures with a preset failure number threshold, and sets the range extender to a disabled start state when the failure number threshold is exceeded; continuously monitoring the residual oil quantity of the vehicle after the range extender is prohibited from being started, and maintaining the prohibited starting state of the range extender when the residual oil quantity of the vehicle is the target oil quantity until the residual oil quantity of the vehicle is no longer the target oil quantity, and setting the range extender to be in a starting state; and when the residual oil quantity of the vehicle is not the target oil quantity, maintaining the range extender in a start-forbidden state until the vehicle is electrified again, and setting the range extender in a start-able state.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present application.
Fig. 3 is a schematic structural diagram of an electronic device 3 according to an embodiment of the present application. As shown in fig. 3, the electronic apparatus 3 of this embodiment includes: a processor 301, a memory 302 and a computer program 303 stored in the memory 302 and executable on the processor 301. The steps of the various method embodiments described above are implemented when the processor 301 executes the computer program 303. Or the processor 301 when executing the computer program 303 performs the functions of the modules/units in the above-described device embodiments.
Illustratively, the computer program 303 may be partitioned into one or more modules/units, which are stored in the memory 302 and executed by the processor 301 to complete the present application. One or more of the modules/units may be a series of computer program instruction segments capable of performing a specific function for describing the execution of the computer program 303 in the electronic device 3.
The electronic device 3 may be an electronic device such as a desktop computer, a notebook computer, a palm computer, or a cloud server. The electronic device 3 may include, but is not limited to, a processor 301 and a memory 302. It will be appreciated by those skilled in the art that fig. 3 is merely an example of the electronic device 3 and does not constitute a limitation of the electronic device 3, and may include more or fewer components than shown, or may combine certain components, or different components, e.g., the electronic device may also include an input-output device, a network access device, a bus, etc.
The Processor 301 may be a central processing unit (Central Processing Unit, CPU) or other general purpose Processor, digital signal Processor (DIGITAL SIGNAL Processor, DSP), application SPECIFIC INTEGRATED Circuit (ASIC), field-Programmable gate array (Field-Programmable GATE ARRAY, FPGA) or other Programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 302 may be an internal storage unit of the electronic device 3, for example, a hard disk or a memory of the electronic device 3. The memory 302 may also be an external storage device of the electronic device 3, for example, a plug-in hard disk provided on the electronic device 3, a smart memory card (SMART MEDIA CARD, SMC), a Secure Digital (SD) card, a flash memory card (FLASH CARD), or the like. Further, the memory 302 may also include both an internal storage unit and an external storage device of the electronic device 3. The memory 302 is used to store computer programs and other programs and data required by the electronic device. The memory 302 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, the specific names of the functional units and modules are only for distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided by the present application, it should be understood that the disclosed apparatus/computer device and method may be implemented in other manners. For example, the apparatus/computer device embodiments described above are merely illustrative, e.g., the division of modules or elements is merely a logical functional division, and there may be additional divisions of actual implementations, multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present application may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, and the computer program may be stored in a computer readable storage medium, where the computer program, when executed by a processor, may implement the steps of each of the method embodiments described above. The computer program may comprise computer program code, which may be in source code form, object code form, executable file or in some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (10)
1. The gradient identification-based range extender control method is characterized by comprising the following steps of:
Receiving a first pitch angle and a valid bit signal sent by an inertial navigation system, and acquiring a second pitch angle calculated by a vehicle chassis system;
Judging whether the first pitch angle is effective or not according to the effective bit signal, setting the gradient as the first pitch angle when the first pitch angle is effective, correcting the second pitch angle when the first pitch angle is ineffective, and taking the corrected second pitch angle as the gradient;
Determining a gradient threshold range according to the current residual oil quantity of the vehicle, comparing the gradient with the gradient threshold range, and performing start-stop control on the range extender according to a comparison result so as to start or close the range extender;
When the vehicle is in an uphill state, determining a generated power increasing value according to the current speed of the vehicle and the gradient, and adjusting the generated power of the range extender by using the generated power increasing value;
When the vehicle is in a downhill state, a corresponding power generation power adjustment strategy is determined according to the relation between the gradient and a preset power generation power adjustment gradient threshold value, and the power generation power of the range extender is adjusted according to the power generation power adjustment strategy.
2. The method of claim 1, wherein prior to said determining from said valid bit signal whether said first pitch angle is valid, said method further comprises:
Calculating a second pitch angle of the vehicle by using the vehicle chassis system, and monitoring the current speed of the vehicle in real time; and monitoring the current residual oil quantity of the vehicle in real time by using an instrument, receiving a start failure zone bit sent by a range extender control system, and sending the second pitch angle, the current speed of the vehicle, the current residual oil quantity of the vehicle and the start failure zone bit to the vehicle control system.
3. The method of claim 1, wherein said correcting said second pitch angle comprises:
Recording a first pitch angle and a second pitch angle corresponding to the vehicle when the first pitch angle is effective, counting the recording times, and keeping the value of the second pitch angle unchanged when the recording times are smaller than or equal to a time threshold value; and when the recorded times are greater than a times threshold, calculating a correction coefficient by using a preset accumulated averaging formula, and adjusting the value of the second pitch angle by using the correction coefficient to obtain the corrected second pitch angle.
4. The method of claim 1, wherein the determining a gradient threshold range according to the current remaining oil amount of the vehicle, comparing the gradient with the gradient threshold range, and performing start-stop control on the range extender according to the comparison result comprises:
inquiring the mapping relation by utilizing the current residual oil quantity of the vehicle according to the mapping relation between the preset residual oil quantity and the gradient threshold range to obtain the gradient threshold range;
When the gradient is within the gradient threshold range and the range extender is judged to need to be started, the vehicle control system sends a starting instruction to the range extender so as to control the range extender to absorb oil through an oil pump to generate electricity; and when the gradient is not within the gradient threshold range, the vehicle control system sends a closing instruction to the range extender so as to control the range extender to stop generating power.
5. The method of claim 1, wherein determining the generated power increase value based on the current vehicle speed and the grade comprises:
Inquiring a preset power generation power accurate control mapping relation or a power generation power conservation control mapping relation by utilizing the current speed and the gradient of the vehicle to obtain a power generation power increase value in an accurate control mode or a power generation power increase value in a conservation control mode;
The power generation accurate control mapping relation or the power generation conservation control mapping relation is stored in a two-dimensional table, the abscissa in the two-dimensional table is the current speed of the vehicle, the ordinate is the gradient, and the table lookup value is the power generation increase value.
6. The method of claim 1, wherein determining a corresponding power adjustment strategy based on the relationship between the grade and a preset power adjustment grade threshold, and adjusting the power of the range extender based on the power adjustment strategy comprises:
comparing the gradient with the generated power adjustment gradient threshold, and when the gradient is within a first generated power adjustment gradient threshold range, not adjusting the generated power; when the gradient is within a second power generation power adjustment gradient threshold range, reducing the power generation power according to the actual recovered power; when the gradient is within a third generation power adjustment gradient threshold range, controlling the range extender to stop generating power;
and the gradient absolute values corresponding to the first power generation gradient adjustment threshold, the second power generation gradient adjustment threshold and the third power generation gradient adjustment threshold become larger in sequence.
7. The method according to claim 1, wherein the method further comprises:
respectively monitoring and recording the start failure times of the range extender under different gradient conditions of the vehicle, comparing the start failure times of the range extender with a preset failure time threshold, and setting the range extender to be in a start prohibition state when the failure time threshold is exceeded;
continuously monitoring the residual oil quantity of the vehicle after the range extender is prohibited from being started, and maintaining the range extender in a state of prohibiting the starting of the range extender when the residual oil quantity of the vehicle is the target oil quantity until the residual oil quantity of the vehicle is no longer the target oil quantity, and setting the range extender in a state of being started; and when the residual oil quantity of the vehicle is not the target oil quantity, maintaining a range extender prohibited starting state until the range extender is set to be in a starting state after the vehicle is electrified again.
8. Range extender control device based on slope identification, characterized by comprising:
the receiving module is configured to receive a first pitch angle and a valid bit signal sent by the inertial navigation system and acquire a second pitch angle calculated by the vehicle chassis system;
the judging module is configured to judge whether the first pitch angle is effective according to the effective bit signal, set the gradient as the first pitch angle when the first pitch angle is effective, correct the second pitch angle when the first pitch angle is ineffective, and take the corrected second pitch angle as the gradient;
The control module is configured to determine a gradient threshold range according to the current residual oil quantity of the vehicle, compare the gradient with the gradient threshold range, and perform start-stop control on the range extender according to a comparison result so as to start or close the range extender;
the first adjusting module is configured to determine a generated power increasing value according to the current speed of the vehicle and the gradient when the vehicle is in an ascending state, and adjust the generated power of the range extender by using the generated power increasing value;
And the second adjusting module is configured to determine a corresponding power generation adjustment strategy according to the relation between the gradient and a preset power generation power adjustment gradient threshold value when the vehicle is in a downhill state, and adjust the power generation power of the range extender according to the power generation power adjustment strategy.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method of any one of claims 1 to 7 when executing the computer program.
10. A computer readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the method according to any one of claims 1 to 7.
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Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6332103B1 (en) * | 1999-06-30 | 2001-12-18 | Deka Products Limited Partnership | Apparatus and method for a pitch state estimator for a personal vehicle |
| JP2009090735A (en) * | 2007-10-04 | 2009-04-30 | Honda Motor Co Ltd | Control device for hybrid vehicle |
| US20100131139A1 (en) * | 2008-11-25 | 2010-05-27 | Denso Corporation | Charge planning apparatus |
| JP2010173361A (en) * | 2009-01-27 | 2010-08-12 | Toyota Motor Corp | Hybrid automobile |
| US20140067318A1 (en) * | 2012-08-30 | 2014-03-06 | Caterpillar Inc. | Inclination determination system |
| US20140244091A1 (en) * | 2011-10-12 | 2014-08-28 | Toyota Jidosha Kabushiki Kaisha | Vehicle drive apparatus control apparatus |
| JP2014202519A (en) * | 2013-04-02 | 2014-10-27 | パイオニア株式会社 | Guiding device |
| US20150134174A1 (en) * | 2012-12-18 | 2015-05-14 | Emerald Automotive Llc | Optimization of extended range electric vehicle |
| CN106660457A (en) * | 2014-07-24 | 2017-05-10 | 三菱电机株式会社 | Power management device, power management system, and motor vehicle |
| US20180120841A1 (en) * | 2016-10-28 | 2018-05-03 | Toyota Jidosha Kabushiki Kaisha | Vehicle control system |
| CN108731676A (en) * | 2018-05-04 | 2018-11-02 | 北京摩高科技有限公司 | A kind of posture fusion enhancing measurement method and system based on inertial navigation technology |
| KR20210045571A (en) * | 2019-10-16 | 2021-04-27 | 현대자동차주식회사 | Apparatus and method for monitoring information of vehicle |
| US20210347369A1 (en) * | 2018-09-18 | 2021-11-11 | Jaguar Land Rover Limited | Method of estimating a vehicle load |
| CN114383861A (en) * | 2021-12-06 | 2022-04-22 | 江铃汽车股份有限公司 | Vehicle loop minimum oil mass analysis method and device, storage medium and equipment |
| CN115476840A (en) * | 2022-09-26 | 2022-12-16 | 深圳市易孔立出软件开发有限公司 | Battery charging method, device, vehicle and medium |
| CN115782854A (en) * | 2022-11-28 | 2023-03-14 | 成都赛力斯科技有限公司 | Range extender control method, system and equipment based on application scene |
| CN115923768A (en) * | 2022-11-28 | 2023-04-07 | 成都赛力斯科技有限公司 | Range extender control method and system based on gradient |
| CN116001595A (en) * | 2022-11-30 | 2023-04-25 | 成都赛力斯科技有限公司 | Power generation power control method and device, whole vehicle controller and vehicle |
| CN116101257A (en) * | 2023-02-02 | 2023-05-12 | 重庆赛力斯新能源汽车设计院有限公司 | Control method, device, equipment and storage medium for reducing range-extended automobile oil consumption |
| CN116853019A (en) * | 2023-07-24 | 2023-10-10 | 合众新能源汽车股份有限公司 | Control method of range extender, range extender controller and vehicle |
| CN117382603A (en) * | 2023-11-09 | 2024-01-12 | 中国重汽集团济南动力有限公司 | Energy recovery method, device and equipment for extended range mine truck based on road gradient |
| CN117507861A (en) * | 2023-11-21 | 2024-02-06 | 东风汽车集团股份有限公司 | Range-extending electric automobile, range extender control method and device thereof and storage medium |
-
2024
- 2024-03-20 CN CN202410322372.XA patent/CN118182442B/en active Active
Patent Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6332103B1 (en) * | 1999-06-30 | 2001-12-18 | Deka Products Limited Partnership | Apparatus and method for a pitch state estimator for a personal vehicle |
| JP2009090735A (en) * | 2007-10-04 | 2009-04-30 | Honda Motor Co Ltd | Control device for hybrid vehicle |
| US20100131139A1 (en) * | 2008-11-25 | 2010-05-27 | Denso Corporation | Charge planning apparatus |
| JP2010173361A (en) * | 2009-01-27 | 2010-08-12 | Toyota Motor Corp | Hybrid automobile |
| US20140244091A1 (en) * | 2011-10-12 | 2014-08-28 | Toyota Jidosha Kabushiki Kaisha | Vehicle drive apparatus control apparatus |
| US20140067318A1 (en) * | 2012-08-30 | 2014-03-06 | Caterpillar Inc. | Inclination determination system |
| US20150134174A1 (en) * | 2012-12-18 | 2015-05-14 | Emerald Automotive Llc | Optimization of extended range electric vehicle |
| JP2014202519A (en) * | 2013-04-02 | 2014-10-27 | パイオニア株式会社 | Guiding device |
| CN106660457A (en) * | 2014-07-24 | 2017-05-10 | 三菱电机株式会社 | Power management device, power management system, and motor vehicle |
| US20180120841A1 (en) * | 2016-10-28 | 2018-05-03 | Toyota Jidosha Kabushiki Kaisha | Vehicle control system |
| CN108731676A (en) * | 2018-05-04 | 2018-11-02 | 北京摩高科技有限公司 | A kind of posture fusion enhancing measurement method and system based on inertial navigation technology |
| US20210347369A1 (en) * | 2018-09-18 | 2021-11-11 | Jaguar Land Rover Limited | Method of estimating a vehicle load |
| KR20210045571A (en) * | 2019-10-16 | 2021-04-27 | 현대자동차주식회사 | Apparatus and method for monitoring information of vehicle |
| CN114383861A (en) * | 2021-12-06 | 2022-04-22 | 江铃汽车股份有限公司 | Vehicle loop minimum oil mass analysis method and device, storage medium and equipment |
| CN115476840A (en) * | 2022-09-26 | 2022-12-16 | 深圳市易孔立出软件开发有限公司 | Battery charging method, device, vehicle and medium |
| CN115782854A (en) * | 2022-11-28 | 2023-03-14 | 成都赛力斯科技有限公司 | Range extender control method, system and equipment based on application scene |
| CN115923768A (en) * | 2022-11-28 | 2023-04-07 | 成都赛力斯科技有限公司 | Range extender control method and system based on gradient |
| CN116001595A (en) * | 2022-11-30 | 2023-04-25 | 成都赛力斯科技有限公司 | Power generation power control method and device, whole vehicle controller and vehicle |
| CN116101257A (en) * | 2023-02-02 | 2023-05-12 | 重庆赛力斯新能源汽车设计院有限公司 | Control method, device, equipment and storage medium for reducing range-extended automobile oil consumption |
| CN116853019A (en) * | 2023-07-24 | 2023-10-10 | 合众新能源汽车股份有限公司 | Control method of range extender, range extender controller and vehicle |
| CN117382603A (en) * | 2023-11-09 | 2024-01-12 | 中国重汽集团济南动力有限公司 | Energy recovery method, device and equipment for extended range mine truck based on road gradient |
| CN117507861A (en) * | 2023-11-21 | 2024-02-06 | 东风汽车集团股份有限公司 | Range-extending electric automobile, range extender control method and device thereof and storage medium |
Non-Patent Citations (2)
| Title |
|---|
| 席利贺;张欣;耿聪;薛奇成;: "基于动态规划算法的增程式电动汽车能量管理策略优化", 交通运输工程学报, no. 03, 15 June 2018 (2018-06-15) * |
| 王俊;过学迅;杨胜兵;: "并联式轻度混合动力客车性能仿真研究", 轻型汽车技术, no. 03, 15 March 2011 (2011-03-15) * |
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