CN115123183A - Plug-in hybrid electric vehicle acceleration control method and device - Google Patents

Abstract

The application provides an electric hybrid vehicle acceleration control method, which relates to the field of control of an electric control system of a whole vehicle. When the opening speed of the accelerator pedal is monitored to be high, the condition that a driver has a sudden acceleration request is indicated, at the moment, the corresponding relation between the opening degree of the accelerator pedal and the output torque is updated, the gain torque relation table is used for replacing the original torque relation table, and the output torque corresponding to the same opening degree of the accelerator pedal in the gain torque relation table is larger than the output torque in the original torque relation table. And finally, the motor output torque corresponding to the opening degree of the accelerator pedal is obtained from the replaced gain torque relation table, so that the motor can output larger torque in advance, the power responsiveness is improved, and the acceleration time is shortened.

Description

Acceleration control method and device for plug-in hybrid electric vehicle

Technical Field

The application relates to the field of control of a whole electric control system, in particular to an acceleration control method and device for an electric hybrid vehicle.

Background

For a Plug-in hybrid electric vehicle (PHEV), the power modes thereof generally include three modes, including a pure electric mode, a hybrid mode and a pure gasoline mode, wherein the hybrid mode further includes a series mode (an engine charges a battery, the battery supplies torque to a motor) and a parallel mode (the engine and the motor output torque to wheels together), and the modes can be switched in real time according to different vehicle working conditions and specific requirements of a driver.

Specifically, after recognizing that the driver depresses the accelerator pedal, the vehicle determines a required torque corresponding to the opening degree of the accelerator pedal by means of a table lookup, controls the vehicle to switch to a proper power mode, and controls at least one of the internal combustion engine and the motor to output a specific torque.

However, the conventional technical solution only considers the opening degree of the accelerator pedal and the smoothness of the motor output, but when the driver has a sudden acceleration request, the corresponding motor output torque may not be enough to meet the acceleration requirement, resulting in poor vehicle dynamic responsiveness and long acceleration time.

Disclosure of Invention

In view of the above, the present application provides an acceleration control method for a plug-in hybrid vehicle, which can improve the power responsiveness of the vehicle and shorten the acceleration time when a driver has a sudden acceleration request.

Specifically, the method comprises the following technical scheme:

on one hand, the application provides an acceleration control method for a plug-in hybrid electric vehicle, which comprises the following steps:

and acquiring vehicle working condition parameters, and judging whether the working condition parameters meet preset working condition conditions.

And when the working condition parameters meet the preset working condition conditions, monitoring the opening rate and the opening degree of the accelerator pedal.

And when the fact that the opening speed of the accelerator pedal is larger than the preset speed is monitored, replacing the original torque relation table with a gain torque relation table, wherein the gain torque relation table and the original torque relation table both store the relation between the opening degree of the accelerator pedal and the output torque of the motor, and the corresponding output torque of the same opening degree of the accelerator pedal in the gain torque relation table is larger than the corresponding output torque in the original torque relation table.

An output torque corresponding to the accelerator opening is determined from the gain torque relationship table.

And controlling the input parameters of the motor to enable the motor to output the output torque.

Optionally, obtain vehicle operating mode parameter to judge whether operating mode parameter satisfies the operating mode condition that predetermines, include:

the vehicle power mode, the driving mode and the remaining capacity are obtained.

And judging whether the vehicle power mode is a hybrid mode or not, whether the driving mode is a sport mode or not and whether the residual electric quantity is larger than the preset electric quantity or not.

And when the three conditions that the vehicle power mode is the hybrid mode, the driving mode is the motion mode and the residual electric quantity is larger than the preset electric quantity are all met, judging that the working condition parameters meet the preset working condition.

Optionally, after monitoring the accelerator pedal opening rate and the accelerator pedal opening, the method further comprises:

and when the opening degree of the accelerator pedal is monitored to be larger than the preset opening degree, replacing the original torque relation table with the gain torque relation table.

Optionally, after replacing the original torque relationship table with the gain torque relationship table, before determining the output torque corresponding to the accelerator opening from the gain torque relationship table, the method further comprises:

and judging whether the vehicle is currently in a series hybrid mode.

And when the vehicle is judged to be in the series hybrid mode at present, switching the vehicle to a parallel hybrid mode.

Optionally, the method further comprises:

and when the working condition parameters are judged to meet the preset working condition conditions and the opening speed of the accelerator pedal is monitored to be greater than the preset speed, judging whether the water temperature of the engine is less than the preset water temperature.

And when the engine water temperature is judged to be less than the preset water temperature, replacing the original torque relation table with the maximum torque relation table, wherein the output torque corresponding to the same accelerator pedal opening degree in the maximum torque relation table is greater than the output torque corresponding to the same accelerator pedal opening degree in the gain torque relation table.

On the other hand, this application still provides an electricity of inserting and mixes automobile acceleration control device, and the device includes:

and the parameter judgment module is configured to acquire the working condition parameters of the vehicle and judge whether the working condition parameters meet the preset working condition.

And the pedal monitoring module is configured to monitor the opening rate and the opening degree of the accelerator pedal when the working condition parameters are judged to meet the preset working condition.

And the relationship updating module is configured to replace the original torque relationship table with the gain torque relationship table when the fact that the opening rate of the accelerator pedal is greater than the preset rate is monitored, the gain torque relationship table and the original torque relationship table both store the relationship between the opening degree of the accelerator pedal and the output torque of the motor, and the output torque corresponding to the same opening degree of the accelerator pedal in the gain torque relationship table is greater than the output torque corresponding to the same opening degree of the accelerator pedal in the original torque relationship table.

A torque determination module configured to determine an output torque corresponding to an accelerator pedal opening from a gain torque relationship table.

A motor control module configured to control an input parameter of the motor to cause the motor to output the output torque.

Optionally, the parameter determining module includes:

an acquisition submodule configured to acquire a vehicle power mode, a driving mode, and a remaining amount of power.

And the judging submodule is configured to judge whether the vehicle power mode is a hybrid mode, whether the driving mode is a sport mode, and whether the residual electric quantity is larger than the preset electric quantity.

The judging submodule is further configured to judge that the working condition parameters meet the preset working condition when three conditions that the vehicle power mode is judged to be the hybrid mode, the driving mode is the sport mode and the residual electric quantity is larger than the preset electric quantity are all met.

Optionally, the relationship updating module is further configured to replace the original torque relationship table with the gain torque relationship table when it is monitored that the opening degree of the accelerator pedal is greater than the preset opening degree.

Optionally, the apparatus further comprises a mode control module:

the mode control module is configured to determine whether the vehicle is currently in the series hybrid mode before determining an output torque corresponding to the accelerator opening from the gain-torque relationship table after replacing the original torque relationship table with the gain-torque relationship table.

The mode control module is further configured to switch the vehicle to the parallel hybrid mode when it is determined that the vehicle is currently in the series hybrid mode.

Optionally, the device further comprises a water temperature monitoring module, wherein the water temperature monitoring module is configured to determine whether the engine water temperature is less than a preset water temperature when the working condition parameter is determined to meet the preset working condition and the accelerator pedal opening rate is monitored to be greater than a preset rate.

The relationship update module is further configured to replace the original torque relationship table with a maximum torque relationship table when it is determined that the engine water temperature is less than the preset water temperature, the same accelerator pedal opening corresponding to an output torque in the maximum torque relationship table being greater than an output torque in the gain torque relationship table.

By adopting the plug-in hybrid electric vehicle acceleration control method provided by the application, when the working condition parameters of the vehicle meet the preset working condition, the opening degree of the accelerator pedal is monitored, and the opening rate of the accelerator pedal is also monitored, so that whether the driver has an urgent acceleration request is judged. When the opening speed of the accelerator pedal is monitored to be high, the condition that a driver has a sudden acceleration request is indicated, at the moment, the corresponding relation between the opening degree of the accelerator pedal and the output torque is updated, the gain torque relation table is used for replacing the original torque relation table, and the output torque corresponding to the same opening degree of the accelerator pedal in the gain torque relation table is larger than the output torque in the original torque relation table. And finally, the motor output torque corresponding to the opening degree of the accelerator pedal is obtained from the replaced gain torque relation table, so that the motor can output larger torque in advance, the power responsiveness is improved, and the acceleration time is shortened.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a flowchart of an acceleration control method for a plug-in hybrid electric vehicle according to an embodiment of the present application;

FIG. 2 is another flowchart of a method for controlling acceleration of a plug-in hybrid electric vehicle according to an embodiment of the present disclosure;

fig. 3 is a structural diagram of an acceleration control device of a plug-in hybrid electric vehicle according to an embodiment of the present application;

fig. 4 is a structural diagram of a parameter determination module of an acceleration control device of an electric plug hybrid vehicle according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides an acceleration control method for a plug-in hybrid electric vehicle, as shown in fig. 1, the method includes steps S101, S102, S103, S104 and S105, wherein:

in step S101, a vehicle condition parameter is obtained, and it is determined whether the condition parameter satisfies a preset condition.

In step S102, when it is determined that the operating condition parameter satisfies the preset operating condition, the accelerator pedal opening rate and the accelerator pedal opening degree are monitored.

In step S103, when it is monitored that the accelerator opening rate is greater than the preset rate, the gain torque relationship table is used to replace the original torque relationship table, where the gain torque relationship table and the original torque relationship table both store the relationship between the accelerator opening and the output torque of the motor, and the output torque corresponding to the same accelerator opening in the gain torque relationship table is greater than the output torque corresponding to the original torque relationship table.

In step S104, an output torque corresponding to the accelerator opening is determined from the gain torque relationship table.

In step S105, the input parameters of the motor are controlled so that the motor outputs the output torque.

By adopting the plug-in hybrid electric vehicle acceleration control method provided by the application, when the working condition parameters of the vehicle meet the preset working condition, the opening degree of the accelerator pedal is monitored, and the opening rate of the accelerator pedal is also monitored, so that whether the driver has an urgent acceleration request is judged. When the opening speed of the accelerator pedal is monitored to be high, the condition that a driver has a sudden acceleration request is indicated, at the moment, the corresponding relation between the opening degree of the accelerator pedal and the output torque is updated, the gain torque relation table is used for replacing the original torque relation table, and the output torque corresponding to the same opening degree of the accelerator pedal in the gain torque relation table is larger than the output torque in the original torque relation table. And finally, obtaining the output torque of the motor corresponding to the opening degree of the accelerator pedal from the replaced gain torque relation table, so that the motor can output larger torque in advance, the power responsiveness is improved, and the acceleration time is shortened.

The embodiment of the application provides an acceleration control method for a plug-in hybrid electric vehicle, as shown in fig. 2, the method includes steps S201, S202, S203, S204, S205, S206, S207, S208, S209, S210, S211, S212, S213 and S214, wherein:

because the plug-in hybrid electric vehicle is not suitable for rapid acceleration under all working conditions, vehicle working condition parameters need to be obtained in advance before judging whether a driver has a rapid acceleration request, and whether the working condition parameters meet preset working condition conditions is judged.

Specifically, in step S201, a vehicle power mode, a driving mode, and a remaining amount of power are acquired.

It will be appreciated that the vehicle power mode is used to indicate the current energy output mode of the vehicle, including an electric-only mode, a hybrid mode, and a gasoline-only mode. The driving mode is used to indicate the degree of aggressiveness of the current torque output of the vehicle, including an economy mode, a normal mode, and a sport mode. The vehicle power mode and the driving mode can be set in the central control screen by a driver or by physical entity keys.

The remaining capacity refers to the remaining capacity of the vehicle power battery pack, and can be obtained from a battery management system.

In some alternative embodiments, it is also desirable to determine in advance whether the vehicle high voltage power is energized, rather than in a mode where only the low voltage power is energized to power the in-vehicle electrical equipment.

In step S202, it is determined whether three conditions, that is, the vehicle power mode is the hybrid mode, the driving mode is the sport mode, and the remaining power is greater than the preset power, are satisfied.

It can be understood that in the pure electric mode, only the motor works, and the engine is in a flameout state. In the pure gasoline mode, the vehicle only works with the engine, and the motor is in a closed state, so that the vehicle can not output the maximum power in the pure gasoline mode and the pure gasoline mode. And the hybrid mode refers to a mode in which the engine and the motor operate simultaneously, and in this mode, the vehicle can obtain larger torque. The gear shifting speed threshold value of the gearbox and the output power of the motor of the vehicle are both adjusted downwards in the economy mode and the normal mode, and the power of the vehicle cannot be fully output. And the motion mode refers to the mode with the most aggressive torque output, and in the motion mode, the gear shifting rotating speed threshold of the gearbox is increased, namely the rotating speed of the engine can be increased to the interval of outputting higher torque, and meanwhile, the limitation on the output power of the motor is removed, so that the motor can output the maximum power. And in the sport mode, the delay time of the motor is shortest, and the response of the accelerator pedal is fastest.

It is understood that corresponding torque maps representing the relationship between the accelerator opening and the motor output torque and the engine output torque may be set in advance for different power modes and driving modes.

The residual electric quantity and the residual endurance of the vehicle have a direct relation, if the residual electric quantity is too small, the output power of the motor and the maximum speed of the vehicle can be limited from a safe angle, so that the motor works in a most power-saving mode, the electric quantity consumption of the power battery is reduced, the descending speed of the endurance mileage is reduced, and the vehicle can smoothly arrive at a charging station for charging. Only when the remaining capacity is greater than the preset capacity, the vehicle can safely output the power sufficiently.

It can be understood that when the three conditions that the vehicle power mode is the hybrid mode, the driving mode is the sport mode and the remaining power is greater than the preset power are all met, the vehicle is ready to output the maximum power at the moment, and the output torque can be amplified according to the rapid acceleration requirement of the driver.

Therefore, when the three conditions that the vehicle power mode is the hybrid mode, the driving mode is the sport mode, and the remaining power is greater than the preset power are all satisfied, it is determined that the working condition parameters satisfy the preset working condition, and step S203 is executed.

In step S203, the accelerator pedal opening rate and the accelerator pedal opening degree are monitored.

It is understood that the opening rate and degree of opening of the accelerator pedal are the parameters that most directly characterize the driver's acceleration demand. The opening rate of the accelerator pedal refers to the angular velocity of the accelerator pedal, and the direction of the angular velocity is from the initial position of the accelerator pedal to the position with the maximum opening degree of the accelerator pedal, and the larger the opening rate of the accelerator pedal, that is, the larger the angular velocity, the larger the force used by the driver to press down the accelerator pedal, the faster the velocity, and there is a sudden acceleration demand. Similarly, if the accelerator pedal opening is larger, it means that the driver has a sudden acceleration request as the driver presses the pedal deeper.

When the working condition parameters are judged not to meet the preset working condition, the vehicle cannot output the maximum power at the moment, even if the subsequent torque amplification process is carried out, the vehicle cannot obtain better acceleration feeling, and the vehicle endurance can be reduced rapidly. In this case, the process returns to step S201, and continues to cyclically obtain the vehicle power mode, the driving mode, and the remaining power, and determine whether the operating parameters satisfy the preset operating conditions, so as to prepare for the next amplification of the output torque.

It will be appreciated that in certain specific situations, even if the driving mode is a hybrid mode, i.e. the engine and the electric machine are working simultaneously, the engine may not be in an optimal working state, for example, the engine water temperature is too low, the water temperature is too low, which represents too low temperature of the engine oil, the engine oil has poor fluidity in the engine, the distribution is uneven, and the proper lubrication effect cannot be achieved. Therefore, in this case, the motor is preferentially made to output a larger torque to compensate for the torque gap of the engine.

Specifically, in step S204, when it is detected that the accelerator pedal opening rate is greater than the preset rate, it is determined whether the engine water temperature is less than the preset water temperature.

It will be appreciated that the preset water temperature may be 70-90.

When it is determined that the engine water temperature is not less than the preset water temperature as one of the determination results of step S204, it goes to step S205.

In step S205, the original torque relationship table is replaced with the gain torque relationship table.

Specifically, the gain torque relation table and the original torque relation table each store a relation between an accelerator pedal opening and an output torque of the motor, and the same accelerator pedal opening corresponds to an output torque larger than that in the original torque relation table in the gain torque relation table.

Specifically, the gain torque relationship table and the raw torque relationship table may be both stored in advance in a storage unit of the vehicle control unit. Because the output characteristic curve of the motor is different from that of the engine, the maximum torque interval of the motor is wider than that of the engine, and larger torque can be exploded in a short time. Therefore, in consideration of acceleration smoothness, in a general state, the vehicle determines the relationship between the opening degree of the accelerator pedal and the output torque of the motor according to the original torque relationship table, so that the output torque of the motor is gradually increased along with the increase of the opening degree of the accelerator pedal, the acceleration characteristic of the engine is simulated, and the acceleration smoothness is improved. When it is determined that the driver has a sudden acceleration request and the engine water temperature is appropriate and not less than the preset water temperature through the aforementioned steps S201-S204, it indicates that the original torque relationship table can be replaced by the gain torque relationship table, and since the same accelerator opening degree is in the gain torque relationship table and the corresponding output torque is greater than the corresponding output torque in the original torque relationship table, the vehicle can amplify the output torque of the motor when determining the relationship between the accelerator opening degree and the output torque of the motor according to the gain torque relationship table.

As another judgment result of the step S204, and the parallel step of the step S205, when it is judged that the engine water temperature is less than the preset water temperature, it goes to the step S206.

In step S206, the original torque relationship table is replaced with the maximum torque relationship table.

The same accelerator opening degree is larger in the maximum torque relationship table than in the gain torque relationship table.

As described above, when it is determined that the engine water temperature is less than the preset water temperature, it indicates that the engine is not in the optimal operating state, and in this case, the motor is preferentially made to output a larger torque to compensate for the torque gap of the engine. In order to realize larger torque output of the motor, the original torque relation table is replaced by the maximum torque relation table, and the maximum torque relation table can also be stored in the storage unit of the whole vehicle controller in advance. Because the same accelerator pedal opening degree and the corresponding output torque in the maximum torque relation table are larger than the corresponding output torque in the gain torque relation table, when the vehicle determines the relation between the accelerator pedal opening degree and the output torque of the motor according to the maximum torque relation table, the further amplification of the output torque of the motor can be realized so as to make up for the torque gap of the engine.

In some alternative embodiments, the use of accelerator pedal opening may also assist in determining whether the driver has a sudden acceleration request. Specifically, a kick-down switch may be provided in the accelerator pedal, and when the accelerator pedal opening is greater than a preset opening, the kick-down switch is triggered, which indicates that the driver has performed a deep step operation on the accelerator pedal at this time, and there is a sudden acceleration demand. Therefore, as another judgment means, after monitoring the accelerator pedal opening rate and the accelerator pedal opening, the method further includes, as a step performed simultaneously with step S204:

in step S207, when it is monitored that the accelerator opening is greater than the preset opening, the original torque relationship table is replaced with the gain torque relationship table.

In some alternative embodiments, similarly to the above steps S204-S206, when it is detected that the opening degree of the accelerator pedal is greater than the preset opening degree, the relationship between the engine water temperature and the preset water temperature may also be determined, the original torque relationship table is replaced by the gain torque relationship table only when the engine water temperature is greater than the preset water temperature, and the original torque relationship table is replaced by the maximum torque relationship table when the engine water temperature is less than the preset water temperature.

In some optional embodiments, the engine water temperature may also be used as a vehicle operating condition parameter, and it is determined in advance whether the engine water temperature is less than the preset water temperature directly by using the above steps S201 to S202.

It can be understood that, since the hybrid mode further includes the series hybrid mode and the parallel hybrid mode, the vehicle can output the maximum power only in the parallel hybrid mode, and the vehicle power output in the series hybrid mode is low, after the gain torque relationship table is used to replace the original torque relationship table, it is also necessary to determine whether the current vehicle is in the series hybrid mode.

Specifically, after replacing the original torque relationship table with the gain torque relationship table using step S205 or step S207, the method further comprises:

in step S208, it is determined whether the vehicle is currently in the series hybrid mode.

When it is determined that the vehicle is currently in the series hybrid mode, it jumps to step S209.

In step S209, the vehicle is switched to the parallel hybrid mode.

It is understood that when the vehicle is not currently in the series hybrid mode as determined in step S208, which indicates that the vehicle is in the parallel hybrid mode, the process may directly go to step S210 without executing step S209.

In step S210, an output torque corresponding to the accelerator opening is determined from the gain torque relationship table.

In step S211, the input parameters of the motor are controlled to cause the motor to output the output torque.

Similarly, after replacing the original torque relationship table with the maximum torque relationship table, it is also necessary to determine whether the current vehicle is in the series hybrid mode.

Therefore, after replacing the original torque relationship table with the maximum torque relationship table in step S206, the method also includes:

in step S212, it is determined whether the vehicle is currently in the series hybrid mode.

When it is determined that the vehicle is currently in the series hybrid mode, it jumps to step S213.

In step S213, the vehicle is switched to the parallel hybrid mode.

It is understood that when the vehicle is not currently in the series hybrid mode in step S212, which indicates that the vehicle is in the parallel hybrid mode, the process may directly go to step S214 without executing step S213.

In step S214, the output torque corresponding to the accelerator pedal opening is determined from the maximum torque relationship table.

After the output torque is finally determined in step S214, the process also goes to step S211, i.e., the input parameters of the motor are controlled to make the motor output the output torque.

After the motor is controlled to output the output torque in step S211, the vehicle can output a large output torque even when the opening degree of the accelerator pedal is small, so that the motor power can be output early, and the driver' S rapid acceleration demand can be satisfied. It will be appreciated that the early output herein refers to the early output of the motor power not before the driver depresses the accelerator pedal, which is obviously unreasonable and unsafe. The motor power is output in advance, namely, in the process that an accelerator pedal is stepped on, compared with the common smooth acceleration condition, the same accelerator pedal opening degree can correspondingly output higher output torque, so that the motor torque is released quickly in advance.

By adopting the plug-in hybrid electric vehicle acceleration control method provided by the application, when the working condition parameters of the vehicle meet the preset working condition, the opening degree of the accelerator pedal is monitored, and the opening rate of the accelerator pedal is also monitored, so that whether the driver has an urgent acceleration request is judged. When the opening speed of the accelerator pedal is monitored to be high, the condition that a driver has a sudden acceleration request is indicated, at the moment, the corresponding relation between the opening degree of the accelerator pedal and the output torque is updated, the gain torque relation table is used for replacing the original torque relation table, and the output torque corresponding to the same opening degree of the accelerator pedal in the gain torque relation table is larger than the output torque in the original torque relation table. And finally, obtaining the output torque of the motor corresponding to the opening degree of the accelerator pedal from the replaced gain torque relation table, so that the motor can output larger torque in advance, the power responsiveness is improved, and the acceleration time is shortened.

The embodiment of the application also provides an acceleration control device of an electric hybrid vehicle, as shown in fig. 3, the device includes:

the parameter determining module 301 is configured to obtain a vehicle operating condition parameter, and determine whether the operating condition parameter meets a preset operating condition.

A pedal monitoring module 302 configured to monitor an accelerator pedal opening rate and an accelerator pedal opening when the operating condition parameter is determined to satisfy the preset operating condition.

And the relationship updating module 303 is configured to replace the original torque relationship table with a gain torque relationship table when it is monitored that the accelerator opening rate is greater than the preset rate, wherein the gain torque relationship table and the original torque relationship table both store the relationship between the accelerator opening and the output torque of the motor, and the output torque corresponding to the same accelerator opening in the gain torque relationship table is greater than the output torque corresponding to the original torque relationship table.

A torque determination module 304 configured to determine an output torque corresponding to an accelerator pedal opening from the gain torque relationship table.

A motor control module 305 configured to control an input parameter of the motor to cause the motor to output the output torque.

In some optional embodiments, as shown in fig. 4, the parameter determining module 301 includes:

the acquisition submodule 3011 is configured to acquire a vehicle power mode, a driving mode, and a remaining amount of power.

The determining sub-module 3012 is configured to determine whether the vehicle power mode is a hybrid mode, whether the driving mode is a sport mode, and whether the remaining power is greater than a preset power.

The determining sub-module 3012 is further configured to determine that the operating condition parameter meets the preset operating condition when three conditions, that is, the vehicle power mode is the hybrid mode, the driving mode is the sport mode, and the remaining power is greater than the preset power, are all met.

In some optional embodiments, the relationship updating module 303 is further configured to replace the original torque relationship table with the gain torque relationship table when it is monitored that the opening degree of the accelerator pedal is greater than the preset opening degree.

In some optional embodiments, the apparatus further comprises a mode control module 306:

the mode control module 306 is configured to determine whether the vehicle is currently in the series hybrid mode before determining the output torque corresponding to the accelerator opening from the gain-torque relationship table after replacing the original torque relationship table with the gain-torque relationship table.

The mode control module 306 is further configured to switch the vehicle to the parallel hybrid mode when it is determined that the vehicle is currently in the series hybrid mode.

In some optional embodiments, the apparatus further comprises a water temperature monitoring module 307, wherein the water temperature monitoring module 307 is configured to determine whether the engine water temperature is less than a preset water temperature when the working condition parameter is determined to satisfy the preset working condition and the accelerator pedal opening rate is detected to be greater than a preset rate.

The relationship update module 303 is further configured to replace the original torque relationship table with a maximum torque relationship table when it is determined that the engine water temperature is less than the preset water temperature, the same accelerator pedal opening corresponding to an output torque in the maximum torque relationship table being greater than a corresponding output torque in the gain torque relationship table.

Adopt the electric hybrid vehicle acceleration control device that inserts that this application provided, when the operating mode parameter of vehicle satisfied preset operating mode condition, not only monitored accelerator pedal aperture, still monitored accelerator pedal opening rate to judge whether the driver has urgent acceleration request. When the opening speed of the accelerator pedal is monitored to be high, the condition that a driver has a sudden acceleration request is indicated, at the moment, the corresponding relation between the opening degree of the accelerator pedal and the output torque is updated, the gain torque relation table is used for replacing the original torque relation table, and the output torque corresponding to the same opening degree of the accelerator pedal in the gain torque relation table is larger than the output torque in the original torque relation table. And finally, the motor output torque corresponding to the opening degree of the accelerator pedal is obtained from the replaced gain torque relation table, so that the motor can output larger torque in advance, the power responsiveness is improved, and the acceleration time is shortened.

The present embodiment and the method embodiment are based on the same inventive concept and are device embodiments corresponding to the method embodiment, so that it should be understood by those skilled in the art that the description of the method embodiment is also applicable to the present embodiment, and some technical details are not described in the present embodiment.

The embodiment of the application also provides a vehicle which comprises the plug-in hybrid electric vehicle acceleration control device provided by the previous embodiment.

In the present application, it is to be understood that the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

The above description is only for facilitating the understanding of the technical solutions of the present application by those skilled in the art, and is not intended to limit the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. An electric hybrid vehicle acceleration control method is characterized by comprising the following steps:

obtaining vehicle working condition parameters, and judging whether the working condition parameters meet preset working condition conditions or not;

when the working condition parameters are judged to meet the preset working condition, monitoring the opening rate and the opening degree of an accelerator pedal;

when the fact that the opening speed of the accelerator pedal is larger than a preset speed is monitored, replacing an original torque relation table with a gain torque relation table, wherein the gain torque relation table and the original torque relation table both store the relation between the opening degree of the accelerator pedal and the output torque of a motor, and the corresponding output torque of the same opening degree of the accelerator pedal in the gain torque relation table is larger than the corresponding output torque in the original torque relation table;

determining the output torque corresponding to the accelerator pedal opening degree from the gain torque relation table;

and controlling input parameters of the motor to enable the motor to output the output torque.

2. The method of claim 1, wherein the obtaining vehicle operating condition parameters and determining whether the operating condition parameters satisfy preset operating condition conditions comprises:

acquiring a vehicle power mode, a driving mode and a residual electric quantity;

judging whether the vehicle power mode is a hybrid mode or not, whether the driving mode is a sport mode or not and whether the residual electric quantity is larger than a preset electric quantity or not;

and when the vehicle power mode is judged to be the hybrid mode, the driving mode is the motion mode, and the three conditions that the residual electric quantity is greater than the preset electric quantity are all met, judging that the working condition parameters meet the preset working condition.

3. The method of claim 1, wherein after said monitoring an accelerator pedal opening rate and an accelerator pedal opening, said method further comprises:

and when the opening degree of the accelerator pedal is monitored to be larger than the preset opening degree, replacing the original torque relation table with the gain torque relation table.

4. The method of claim 1, wherein after said replacing an original torque relationship table with a gain torque relationship table and before said determining said output torque corresponding to said accelerator pedal opening from said gain torque relationship table, said method further comprises:

judging whether the vehicle is in a series hybrid mode at present;

and when the vehicle is judged to be in the series hybrid mode at present, switching the vehicle to a parallel hybrid mode.

5. The method of claim 1, further comprising:

when the working condition parameters are judged to meet the preset working condition conditions and the opening speed of the accelerator pedal is monitored to be greater than the preset speed, judging whether the water temperature of the engine is smaller than the preset water temperature;

and when the engine water temperature is judged to be smaller than the preset water temperature, replacing the original torque relation table with a maximum torque relation table, wherein the output torque corresponding to the same accelerator pedal opening degree in the maximum torque relation table is larger than the output torque corresponding to the same accelerator pedal opening degree in the gain torque relation table.

6. An electric plug-in hybrid vehicle acceleration control device, characterized in that the device comprises:

the parameter judgment module is configured to acquire vehicle working condition parameters and judge whether the working condition parameters meet preset working condition conditions;

the pedal monitoring module is configured to monitor the opening rate and the opening degree of an accelerator pedal when the working condition parameters are judged to meet the preset working condition;

a relationship updating module configured to replace an original torque relationship table with a gain torque relationship table when it is monitored that the accelerator pedal opening rate is greater than a preset rate, wherein the gain torque relationship table and the original torque relationship table both store a relationship between the accelerator pedal opening and an output torque of a motor, and the same accelerator pedal opening is greater than the corresponding output torque in the original torque relationship table in the gain torque relationship table;

a torque determination module configured to determine the output torque corresponding to the accelerator opening from the gain torque relationship table;

a motor control module configured to control an input parameter of a motor to cause the motor to output the output torque.

7. The apparatus of claim 6, wherein the parameter determining module comprises:

an acquisition submodule configured to acquire a vehicle power mode, a driving mode, and a remaining capacity;

the judging submodule is configured to judge whether the vehicle power mode is a hybrid mode or not, whether the driving mode is a sport mode or not and whether the residual electric quantity is larger than a preset electric quantity or not;

the judging submodule is further configured to judge that the working condition parameter meets the preset working condition when three conditions that the vehicle power mode is judged to be a hybrid mode, the driving mode is a motion mode, and the residual electric quantity is larger than a preset electric quantity are all met.

8. The apparatus of claim 6, wherein the relationship update module is further configured to replace the original torque relationship table with the gain torque relationship table when it is monitored that the accelerator pedal opening is greater than a preset opening.

9. The apparatus of claim 6, further comprising a mode control module to:

the mode control module is configured to determine whether the vehicle is currently in a series hybrid mode after the replacing an original torque relationship table with a gain torque relationship table and before the determining the output torque corresponding to the accelerator pedal opening from the gain torque relationship table;

the mode control module is further configured to switch the vehicle to a parallel hybrid mode when it is determined that the vehicle is currently in the series hybrid mode.

10. The device of claim 6, further comprising a water temperature monitoring module configured to determine whether engine water temperature is less than a preset water temperature when the operating condition parameter is determined to satisfy the preset operating condition and the accelerator pedal opening rate is monitored to be greater than a preset rate;

the relationship updating module is further configured to replace the original torque relationship table with a maximum torque relationship table when it is determined that the engine water temperature is less than a preset water temperature, the same accelerator pedal opening degree in the maximum torque relationship table corresponding to the output torque being greater than the output torque in the gain torque relationship table.

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