CN116278789A - Single pedal mode control method and device for electric automobile and storage medium - Google Patents

Single pedal mode control method and device for electric automobile and storage medium Download PDF

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Publication number
CN116278789A
CN116278789A CN202211564889.7A CN202211564889A CN116278789A CN 116278789 A CN116278789 A CN 116278789A CN 202211564889 A CN202211564889 A CN 202211564889A CN 116278789 A CN116278789 A CN 116278789A
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CN
China
Prior art keywords
deceleration
automobile
power recovery
total
power
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Pending
Application number
CN202211564889.7A
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Chinese (zh)
Inventor
李璞
李陈勇
刘小飞
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Hozon New Energy Automobile Co Ltd
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Hozon New Energy Automobile Co Ltd
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Priority to CN202211564889.7A priority Critical patent/CN116278789A/en
Publication of CN116278789A publication Critical patent/CN116278789A/en
Pending legal-status Critical Current

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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
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • 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
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B60L15/2009—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for braking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/12—Speed
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The application discloses a single pedal mode control method, a single pedal mode control device and a storage medium of an electric automobile, wherein the single pedal mode control method comprises the following steps: acquiring working condition parameters in the decelerating and braking process of the electric automobile, and determining the total deceleration of the current requirement of the automobile according to the working condition parameters; determining the current power recovery deceleration of the automobile according to the working condition parameters, and judging whether the power recovery deceleration reaches the total deceleration or not; if the power recovery deceleration is judged to reach the total deceleration, the motor of the automobile is driven by the recovery power to provide the power recovery deceleration so as to realize the total deceleration; if the power recovery deceleration is judged not to reach the total deceleration, the motor of the power driven automobile is used for recovering the power to provide the power recovery deceleration, meanwhile, the hydraulic brake is used for providing the supplementary deceleration, and the total deceleration is realized through the power recovery deceleration and the supplementary deceleration. Therefore, the deceleration of the automobile brake is provided through the recharging of the automobile battery and the hydraulic brake, and the normal starting of the single pedal function is ensured.

Description

Single pedal mode control method and device for electric automobile and storage medium
Technical Field
The application relates to the technical field of automobiles, in particular to a single pedal mode control method and device for an electric automobile and a storage medium.
Background
The single pedal technology is an important technology which can be applied to new energy automobiles, not only can simplify driving operation, but also can achieve the effect of energy conservation through reversing braking of a motor. In the prior art, the single pedal function cannot be started when the battery state is in a state where recharging is not allowed or recharging power is allowed to be smaller. If the battery is in an extreme temperature state in cold winter, the recovery capacity of the automobile is poor, so that the automobile cannot use a single pedal function, and the driving experience is poor.
Disclosure of Invention
The purpose of the application is to provide a single pedal mode control method, a device and a storage medium of an electric automobile, and the deceleration of automobile braking is provided through recharging of an automobile battery and hydraulic braking, so that the starting of a single pedal function is ensured, and the driving stability is facilitated.
To achieve the above object:
in a first aspect, an embodiment of the present application provides a method for controlling a single pedal mode of an electric vehicle, including the following steps:
acquiring working condition parameters in the decelerating and braking process of the electric automobile, and determining the total deceleration of the current requirement of the automobile according to the working condition parameters;
determining the power recovery deceleration which can be provided by the automobile at present according to the working condition parameters, and judging whether the power recovery deceleration reaches the total deceleration or not;
if the power recovery deceleration is judged to reach the total deceleration, the motor of the automobile is driven by the recovery power to provide the power recovery deceleration so as to realize the total deceleration;
and if the power recovery deceleration is judged not to reach the total deceleration, providing the power recovery deceleration by the motor of the automobile driven by the recovery power, and providing the supplementary deceleration by hydraulic braking, wherein the total deceleration is realized by the power recovery deceleration and the supplementary deceleration together.
Optionally, the obtaining the working condition parameter in the deceleration braking process of the electric automobile, determining the total deceleration of the current requirement of the automobile according to the working condition parameter, includes:
presetting an automobile single pedal deceleration two-dimensional table, wherein the automobile single pedal deceleration two-dimensional table comprises the corresponding relation of the opening degree of an automobile pedal and the real-time speed to the total deceleration;
and acquiring real-time speed and pedal opening information of the automobile in the process of decelerating and braking, and searching the total deceleration of the current requirement of the automobile according to a preset automobile single-pedal deceleration two-dimensional table through the real-time speed and pedal opening information.
Optionally, the determining, according to the working condition parameter, the power recovery deceleration that the automobile can currently provide, and determining whether the power recovery deceleration reaches the total deceleration includes:
acquiring battery energy of the automobile, and determining battery recharging capability of the automobile according to the battery energy and current environmental information;
and determining the power recovery deceleration which can be provided by the recovery power generated by the automobile in the battery recharging process according to the battery recharging capability of the automobile, and judging whether the power recovery deceleration reaches the total deceleration.
Optionally, if the power recovery deceleration is determined to reach the total deceleration, the power recovery deceleration is provided only by the motor of the vehicle driven by the recovered power to achieve the total deceleration, including:
if the power recovery deceleration is judged to reach the total deceleration, energy recovery is carried out through the automobile battery;
and driving a motor of the automobile to apply reverse torque according to the recovery force obtained by recharging the battery so as to realize the total deceleration required by the automobile.
Optionally, if it is determined that the power recovery deceleration cannot reach the total deceleration, a motor for driving the automobile by the recovery power provides the power recovery deceleration, and also provides a supplementary deceleration by hydraulic braking, and the total deceleration is achieved by the power recovery deceleration and the supplementary deceleration together, including:
if the power recovery deceleration can not reach the total deceleration, determining the deceleration provided by battery recharging in the automobile deceleration braking process;
calculating the deceleration of the automobile deficiency according to the deceleration provided by the battery recharging and the total deceleration required by the automobile;
and determining corresponding supplementary deceleration according to the deceleration of the automobile deficiency, and applying pressure to brake oil in a brake master cylinder through hydraulic braking to provide the corresponding supplementary deceleration.
In a second aspect, an embodiment of the present application provides an electric vehicle single pedal mode control device, including:
the deceleration determining module is used for acquiring working condition parameters in the decelerating and braking process of the electric automobile and determining the total deceleration of the current requirement of the automobile according to the working condition parameters;
the judging module is used for determining the power recovery deceleration which can be provided by the automobile at present according to the working condition parameters and judging whether the power recovery deceleration reaches the total deceleration or not;
the processing module is used for providing the power recovery deceleration only by the motor of the automobile driven by the recovery power to realize the total deceleration if the power recovery deceleration is judged to reach the total deceleration; and if the power recovery deceleration is judged not to reach the total deceleration, providing the power recovery deceleration by the motor of the automobile driven by the recovery power, and providing the supplementary deceleration by hydraulic braking, wherein the total deceleration is realized by the power recovery deceleration and the supplementary deceleration together.
Optionally, the processing module includes a whole vehicle controller and an integrated chassis domain controller, and is specifically configured to:
in the process of realizing the automobile deceleration and braking, when the automobile battery is charged back to realize the power recovery deceleration, the whole automobile controller controls the automobile battery to recover energy, and the motor of the automobile is driven to apply reverse torque so as to drive the automobile to realize the power deceleration;
when the supplementary deceleration is realized through the hydraulic braking of the automobile, the supplementary deceleration required to be executed is obtained, and the pressure is applied to the brake oil in the brake master cylinder through the integrated chassis domain controller by means of the hydraulic braking so as to realize the automobile supplementary deceleration.
In a third aspect, an embodiment of the present application discloses an electronic device, including: a memory storing executable program code; a processor coupled to the memory; the processor invokes the executable program code stored in the memory for executing the electric vehicle single pedal mode control method according to the first aspect.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium having a computer program stored therein, which when executed by a processor of an electronic device, enables the electronic device to implement the electric vehicle single pedal mode control method according to the first aspect.
In a fifth aspect, embodiments of the present application also provide a vehicle configured with the electric vehicle single pedal mode control device as above.
The embodiment of the application provides a single pedal mode control method, a single pedal mode control device and a storage medium for an electric automobile, which comprise the following steps: acquiring working condition parameters in the decelerating and braking process of the electric automobile, and determining the total deceleration of the current requirement of the automobile according to the working condition parameters; determining the current power recovery deceleration of the automobile according to the working condition parameters, and judging whether the power recovery deceleration reaches the total deceleration or not; if the power recovery deceleration is judged to reach the total deceleration, the motor of the automobile is driven by the recovery power to provide the power recovery deceleration so as to realize the total deceleration; if the power recovery deceleration is judged not to reach the total deceleration, the motor of the power driven automobile is used for recovering the power to provide the power recovery deceleration, meanwhile, the hydraulic brake is used for providing the supplementary deceleration, and the total deceleration is realized through the power recovery deceleration and the supplementary deceleration. Therefore, the deceleration of the automobile brake is provided through the recharging of the automobile battery and the hydraulic brake, and the starting of the single pedal function is ensured.
Drawings
Fig. 1 is a flow chart of a single pedal mode control method for an electric vehicle according to a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of a single pedal mode control device for an electric vehicle according to a preferred embodiment of the present invention;
fig. 3 is a schematic structural diagram of a single pedal mode control device for an electric vehicle according to another preferred embodiment of the present invention.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the accompanying claims.
It should be noted that, in this document, step numbers such as S101 and S102 are used for the purpose of more clearly and briefly describing the corresponding content, and not to constitute a substantial limitation on the sequence, and those skilled in the art may execute S102 first and then S101 when implementing the present invention, which is within the scope of protection of the present application.
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
Referring to fig. 1, in an example of application of an electric vehicle single pedal mode control device to a server, the electric vehicle single pedal mode control method provided by the embodiment of the application may be executed by an electric vehicle single pedal mode control device provided by the embodiment of the application, and the electric vehicle single pedal mode control device may be implemented in a software and/or hardware manner, where the electric vehicle single pedal mode control device is provided by the embodiment of the application as an example, the electric vehicle single pedal mode control method provided by the embodiment includes the following steps:
step S101: working condition parameters in the decelerating and braking process of the electric automobile are obtained, and the total deceleration of the current requirement of the automobile is determined according to the working condition parameters.
In an embodiment, before the working condition parameters in the deceleration braking process of the electric automobile are obtained, judging whether the current state of the automobile allows the single pedal function to be started, if so, displaying a start success signal through a display, and if not, displaying a start failure signal through the display.
In one embodiment, an automobile single-pedal deceleration two-dimensional table is preset, and the automobile single-pedal deceleration two-dimensional table comprises the corresponding relation between the opening degree of an automobile pedal and the real-time speed of the automobile and the total deceleration. And acquiring real-time speed and pedal opening information of the vehicle in the current decelerating and braking process, and searching the total deceleration of the current decelerating and braking requirement of the automobile according to the preset automobile single-pedal decelerating two-dimensional table through the real-time speed and pedal opening information.
Step S102: and determining the power recovery deceleration which can be provided by the automobile at present according to the working condition parameters, and judging whether the power recovery deceleration reaches the total deceleration.
In one embodiment, the current battery energy of the automobile is obtained, and the current battery recharging capability of the automobile is determined according to the battery energy and the current environmental information of the automobile. And determining the power recovery deceleration which can be provided by the recovery power generated in the recharging process of the automobile battery according to the determined battery recharging capability, and judging whether the power recovery deceleration reaches the total deceleration required by the automobile deceleration braking.
Step S103: and if the power recovery deceleration is judged to reach the total deceleration, the motor of the automobile is driven by the recovery power to provide the power recovery deceleration so as to realize the total deceleration.
In one embodiment, if the power recovery deceleration is judged to reach the total deceleration, energy recovery is performed by the vehicle battery; and acquiring recovery force according to the battery recharging so as to drive a motor of the automobile to apply reverse torque so as to drive the automobile to realize the total deceleration required by the automobile deceleration braking.
Step S104: and if the power recovery deceleration is judged not to reach the total deceleration, providing the power recovery deceleration by the motor of the automobile driven by the recovery power, and providing the supplementary deceleration by hydraulic braking, wherein the total deceleration is realized by the power recovery deceleration and the supplementary deceleration together.
In one embodiment, if it is determined that the power recovery deceleration cannot reach the total deceleration, a deceleration provided by battery recharging during the vehicle deceleration braking is determined, where the vehicle battery provides a deceleration by applying a reverse torque to the energy recovery drive motor. According to the deceleration provided by the battery recharging and the total deceleration required by the automobile, the deceleration of the automobile is calculated, the corresponding supplementary deceleration is determined according to the deceleration of the automobile, and the pressure is applied to brake oil in a brake master cylinder through hydraulic braking to provide the supplementary deceleration, so that the deceleration braking of the automobile is realized.
In one embodiment, if the vehicle battery does not allow energy recovery, i.e., the vehicle deceleration provided by battery recharging is 0, the pressure applied to the brake fluid in the master cylinder by hydraulic braking provides the total deceleration demanded by the vehicle hydraulic braking.
In summary, in the method for controlling the single pedal mode of the electric vehicle provided in the above embodiment, by judging the deceleration provided by recharging the battery of the vehicle and the total deceleration required by the vehicle for decelerating and braking, when the battery recharging cannot provide the total deceleration required by the vehicle, the hydraulic braking assistance is performed to provide the missing deceleration, so as to ensure the starting of the single pedal function.
The method provided in the foregoing embodiments will be described in detail by way of a specific example based on the same inventive concept as the foregoing embodiments.
Referring to fig. 2, in order to provide a single pedal mode control device for an electric vehicle according to an embodiment of the present application, the single pedal mode control system for an electric vehicle includes a deceleration determining module, a judging module, and a processing module, where,
the deceleration determining module is used for acquiring working condition parameters in the decelerating and braking process of the electric automobile and determining the total deceleration of the current requirement of the automobile according to the working condition parameters;
the judging module is used for determining the power recovery deceleration which can be provided by the automobile at present according to the working condition parameters and judging whether the power recovery deceleration reaches the total deceleration or not;
the processing module is used for providing the power recovery deceleration only by the motor of the automobile driven by the recovery power to realize the total deceleration if the power recovery deceleration is judged to reach the total deceleration; and if the power recovery deceleration is judged not to reach the total deceleration, providing the power recovery deceleration by the motor of the automobile driven by the recovery power, and providing the supplementary deceleration by hydraulic braking, wherein the total deceleration is realized by the power recovery deceleration and the supplementary deceleration together.
In an embodiment, the deceleration determining module is specifically configured to determine, before the working condition parameters in the deceleration braking process of the electric vehicle are obtained, whether the current state of the electric vehicle allows the single pedal function to be started, if it is determined that the single pedal function is allowed to be started, display a start success signal through the display, and if it is determined that the single pedal function is not allowed to be started, display a start failure signal through the display.
In one embodiment, an automobile single-pedal deceleration two-dimensional table is preset, and the automobile single-pedal deceleration two-dimensional table comprises the corresponding relation between the opening degree of an automobile pedal and the real-time speed of the automobile and the total deceleration. And acquiring real-time speed and pedal opening information of the vehicle in the current decelerating and braking process, and searching the total deceleration of the current decelerating and braking requirement of the automobile according to the preset automobile single-pedal decelerating two-dimensional table through the real-time speed and pedal opening information.
In an embodiment, the determining module is specifically configured to obtain current battery energy of the vehicle, and determine current battery recharging capability of the vehicle according to the battery energy and current environmental information of the vehicle. And determining the power recovery deceleration which can be provided by the recovery power generated in the recharging process of the automobile battery according to the determined battery recharging capability, and judging whether the power recovery deceleration reaches the total deceleration required by the automobile deceleration braking.
In an embodiment, the processing module includes a vehicle controller and an integrated chassis domain controller, and is specifically configured to, when implementing deceleration braking of an automobile, control the automobile battery to perform energy recovery through the vehicle controller and drive a motor of the automobile to apply a reverse torque to drive the automobile to implement deceleration of power recovery; when the supplementary deceleration is realized through the hydraulic braking of the automobile, the supplementary deceleration required to be executed is obtained, and the pressure is applied to the brake oil in the brake master cylinder through the integrated chassis domain controller by means of the hydraulic braking so as to realize the supplementary deceleration.
In one embodiment, if the power recovery deceleration is judged to reach the total deceleration, energy recovery is performed by the vehicle battery; and acquiring recovery force according to the battery recharging so as to drive a motor of the automobile to apply reverse torque so as to drive the automobile to realize the total deceleration required by the automobile deceleration braking.
In one embodiment, if it is determined that the power recovery deceleration cannot reach the total deceleration, a deceleration provided by battery recharging during the vehicle deceleration braking is determined, where the vehicle battery provides a deceleration by applying a reverse torque to the energy recovery drive motor. According to the deceleration provided by the battery recharging and the total deceleration required by the automobile, the deceleration of the automobile is calculated, the corresponding supplementary deceleration is determined according to the deceleration of the automobile, and the pressure is applied to brake oil in a brake master cylinder through hydraulic braking to provide the supplementary deceleration, so that the deceleration braking of the automobile is realized.
In one embodiment, if the vehicle battery does not allow energy recovery, i.e., the vehicle deceleration provided by battery recharging is 0, the pressure applied to the brake fluid in the master cylinder by hydraulic braking provides the total deceleration demanded by the vehicle hydraulic braking.
In summary, in the single pedal mode control device for an electric vehicle provided in the foregoing embodiment, the deceleration determination module obtains the working condition parameters during the deceleration braking of the vehicle, and the judgment module judges the deceleration provided by the recharging of the vehicle battery and the total deceleration required by the deceleration braking of the vehicle, and the processing module controls the recharging of the vehicle battery and the hydraulic braking to provide the total deceleration required by the braking of the vehicle, so as to help to ensure the normal starting of the single pedal function of the vehicle.
Based on the same inventive concept as the previous embodiments, the embodiment of the present invention provides a single pedal mode control device of an electric vehicle, as shown in fig. 3, including: a processor 210 and a memory 211 storing a computer program; the number of the processors 210 illustrated in fig. 3 is not used to refer to one number of the processors 210, but is merely used to refer to a positional relationship of the processors 210 with respect to other devices, and in practical applications, the number of the processors 210 may be one or more; likewise, the memory 211 illustrated in fig. 3 is also used in the same sense, that is, only to refer to the positional relationship of the memory 211 with respect to other devices, and in practical applications, the number of the memories 211 may be one or more. When the processor 210 runs the computer program, the electric vehicle single pedal mode control method applied to the above device is implemented.
The apparatus may further include: at least one network interface 212. The various components in the device are coupled together by a bus system 213. It is understood that the bus system 213 is used to enable connected communication between these components. The bus system 213 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration the various buses are labeled as bus system 213 in fig. 3.
The memory 211 may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. Wherein the nonvolatile Memory may be Read Only Memory (ROM), programmable Read Only Memory (PROM, programmable Read-Only Memory), erasable programmable Read Only Memory (EPROM, erasable Programmable Read-Only Memory), electrically erasable programmable Read Only Memory (EEPROM, electrically Erasable Programmable Read-Only Memory), magnetic random access Memory (FRAM, ferromagnetic random access Memory), flash Memory (Flash Memory), magnetic surface Memory, optical disk, or compact disk Read Only Memory (CD-ROM, compact Disc Read-Only Memory); the magnetic surface memory may be a disk memory or a tape memory. The volatile memory may be random access memory (RAM, random Access Memory), which acts as external cache memory. By way of example, and not limitation, many forms of RAM are available, such as static random access memory (SRAM, static Random Access Memory), synchronous static random access memory (SSRAM, synchronous Static Random Access Memory), dynamic random access memory (DRAM, dynamic Random Access Memory), synchronous dynamic random access memory (SDRAM, synchronous Dynamic Random Access Memory), double data rate synchronous dynamic random access memory (ddr SDRAM, double Data Rate Synchronous Dynamic Random Access Memory), enhanced synchronous dynamic random access memory (ESDRAM, enhanced Synchronous Dynamic Random Access Memory), synchronous link dynamic random access memory (SLDRAM, syncLink Dynamic Random Access Memory), direct memory bus random access memory (DRRAM, direct Rambus Random Access Memory). The memory 211 described in embodiments of the present invention is intended to comprise, without being limited to, these and any other suitable types of memory.
The memory 211 in the embodiment of the present invention is used to store various types of data to support the operation of the apparatus. Examples of such data include: any computer program for operating on the device, such as an operating system and application programs; contact data; telephone book data; a message; a picture; video, etc. The operating system includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application programs may include various application programs such as a Media Player (Media Player), a Browser (Browser), etc. for implementing various application services. Here, a program for implementing the method of the embodiment of the present invention may be included in an application program.
Based on the same inventive concept as the previous embodiments, the present embodiment further provides a computer readable storage medium having a computer program stored therein, where the computer readable storage medium may be a Memory such as a magnetic random access Memory (FRAM, ferromagnetic random access Memory), a Read Only Memory (ROM), a programmable Read Only Memory (PROM, programmable Read-Only Memory), an erasable programmable Read Only Memory (EPROM, erasable Programmable Read-Only Memory), an electrically erasable programmable Read Only Memory (EEPROM, electrically Erasable Programmable Read-Only Memory), a Flash Memory (Flash Memory), a magnetic surface Memory, a compact disc, or a compact disc Read Only Memory (CD-ROM, compact Disc Read-Only Memory); but may be a variety of devices including one or any combination of the above-described memories, such as a mobile phone, computer, tablet device, personal digital assistant, or the like. The computer program stored in the computer readable storage medium realizes the single pedal mode control method of the electric automobile applied to the device when being run by a processor. The specific step flow implemented when the computer program is executed by the processor is described with reference to the embodiment shown in fig. 1, and will not be described herein.
An embodiment of yet another aspect of the present application provides a vehicle including the electric vehicle single pedal mode control device described in fig. 2 above.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
In this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a list of elements is included, and may include other elements not expressly listed.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The single pedal mode control method of the electric automobile is characterized by comprising the following steps of:
acquiring working condition parameters in the decelerating and braking process of the electric automobile, and determining the total deceleration of the current requirement of the automobile according to the working condition parameters;
determining the power recovery deceleration which can be provided by the automobile at present according to the working condition parameters, and judging whether the power recovery deceleration reaches the total deceleration or not;
if the power recovery deceleration is judged to reach the total deceleration, the motor of the automobile is driven by the recovery power to provide the power recovery deceleration so as to realize the total deceleration;
and if the power recovery deceleration is judged not to reach the total deceleration, providing the power recovery deceleration by the motor of the automobile driven by the recovery power, and providing the supplementary deceleration by hydraulic braking, wherein the total deceleration is realized by the power recovery deceleration and the supplementary deceleration together.
2. The method according to claim 1, wherein the obtaining the working condition parameter in the deceleration braking process of the electric vehicle, and determining the total deceleration currently required by the vehicle according to the working condition parameter, includes:
presetting an automobile single pedal deceleration two-dimensional table, wherein the automobile single pedal deceleration two-dimensional table comprises the corresponding relation of the opening degree of an automobile pedal and the real-time speed to the total deceleration;
and acquiring real-time speed and pedal opening information of the automobile in the process of decelerating and braking, and searching the total deceleration of the current requirement of the automobile according to a preset automobile single-pedal deceleration two-dimensional table through the real-time speed and pedal opening information.
3. The method of claim 1, wherein determining the power recovery deceleration currently available to the vehicle based on the operating condition parameters, determining whether the power recovery deceleration reaches the total deceleration, comprises:
acquiring battery energy of the automobile, and determining battery recharging capability of the automobile according to the battery energy and current environmental information;
and determining the power recovery deceleration which can be provided by the recovery power generated by the automobile in the battery recharging process according to the battery recharging capability of the automobile, and judging whether the power recovery deceleration reaches the total deceleration.
4. The method according to claim 1, wherein if it is determined that the power recovery deceleration reaches the total deceleration, the power recovery deceleration is provided only by the motor that drives the vehicle with the recovery power to achieve the total deceleration, comprising:
if the power recovery deceleration is judged to reach the total deceleration, energy recovery is carried out through the automobile battery;
and driving a motor of the automobile to apply reverse torque according to the recovery force obtained by recharging the battery so as to realize the total deceleration required by the automobile.
5. The method according to claim 1, wherein if it is determined that the power recovery deceleration cannot reach the total deceleration, a supplementary deceleration is provided by hydraulic braking along with the power recovery deceleration provided by a motor that drives the vehicle with the recovered power, the total deceleration being achieved by the power recovery deceleration and the supplementary deceleration together, comprising:
if the power recovery deceleration can not reach the total deceleration, determining the deceleration provided by battery recharging in the automobile deceleration braking process;
calculating the deceleration of the automobile deficiency according to the deceleration provided by the battery recharging and the total deceleration required by the automobile;
and determining corresponding supplementary deceleration according to the deceleration of the automobile deficiency, and applying pressure to brake oil in a brake master cylinder through hydraulic braking to provide the corresponding supplementary deceleration.
6. An electric vehicle single pedal mode control device, characterized in that the device comprises:
the deceleration determining module is used for acquiring working condition parameters in the decelerating and braking process of the electric automobile and determining the total deceleration of the current requirement of the automobile according to the working condition parameters;
the judging module is used for determining the power recovery deceleration which can be provided by the automobile at present according to the working condition parameters and judging whether the power recovery deceleration reaches the total deceleration or not;
the processing module is used for providing the power recovery deceleration only by the motor of the automobile driven by the recovery power to realize the total deceleration if the power recovery deceleration is judged to reach the total deceleration; and if the power recovery deceleration is judged not to reach the total deceleration, providing the power recovery deceleration by the motor of the automobile driven by the recovery power, and providing the supplementary deceleration by hydraulic braking, wherein the total deceleration is realized by the power recovery deceleration and the supplementary deceleration together.
7. The apparatus of claim 6, wherein the processing module comprises a vehicle controller and an integrated chassis domain controller, specifically configured to:
in the process of realizing the automobile deceleration and braking, when the automobile battery is charged back to realize the power recovery deceleration, the whole automobile controller controls the automobile battery to recover energy, and the motor of the automobile is driven to apply reverse torque so as to drive the automobile to realize the power recovery deceleration;
when the supplementary deceleration is realized through the hydraulic braking of the automobile, the supplementary deceleration required to be executed is obtained, and the pressure is applied to the brake oil in the brake master cylinder through the integrated chassis domain controller by means of the hydraulic braking so as to realize the supplementary deceleration.
8. An electronic device, comprising: a processor and a memory; wherein the memory stores a computer program for loading and executing the method of single pedal mode control of an electric vehicle according to any one of claims 1 to 5 by the processor.
9. A computer readable storage medium storing instructions for loading and executing the method of single pedal mode control of an electric vehicle according to any one of claims 1-5 by a processor.
10. An automobile comprising the electric automobile single pedal mode control apparatus according to any one of claims 6 to 7.
CN202211564889.7A 2022-12-07 2022-12-07 Single pedal mode control method and device for electric automobile and storage medium Pending CN116278789A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211564889.7A CN116278789A (en) 2022-12-07 2022-12-07 Single pedal mode control method and device for electric automobile and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211564889.7A CN116278789A (en) 2022-12-07 2022-12-07 Single pedal mode control method and device for electric automobile and storage medium

Publications (1)

Publication Number Publication Date
CN116278789A true CN116278789A (en) 2023-06-23

Family

ID=86827537

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211564889.7A Pending CN116278789A (en) 2022-12-07 2022-12-07 Single pedal mode control method and device for electric automobile and storage medium

Country Status (1)

Country Link
CN (1) CN116278789A (en)

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