CN114954420A - Constant-speed cruise control method and system for hybrid electric vehicle - Google Patents
Constant-speed cruise control method and system for hybrid electric vehicle Download PDFInfo
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- CN114954420A CN114954420A CN202210828143.6A CN202210828143A CN114954420A CN 114954420 A CN114954420 A CN 114954420A CN 202210828143 A CN202210828143 A CN 202210828143A CN 114954420 A CN114954420 A CN 114954420A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000003993 interaction Effects 0.000 claims description 4
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- 239000000446 fuel Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 210000000481 breast Anatomy 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/20—Control strategies involving selection of hybrid configuration, e.g. selection between series or parallel configuration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/14—Adaptive cruise control
- B60W30/143—Speed control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/24—Energy storage means
- B60W2510/242—Energy storage means for electrical energy
- B60W2510/244—Charge state
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2720/00—Output or target parameters relating to overall vehicle dynamics
- B60W2720/10—Longitudinal speed
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- 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
- Y02T10/62—Hybrid vehicles
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- Automation & Control Theory (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a constant-speed cruise control method of a hybrid electric vehicle, which comprises the steps of judging that the vehicle meets the condition of starting a constant-speed cruise after obtaining a signal for starting the constant-speed cruise function, and if the vehicle meets the condition of starting the constant-speed cruise; calculating cruise required torque according to the vehicle speed, and distributing the torque; if the SOC is larger than or equal to the set SOC upper limit value and the cruise demand torque is smaller than or equal to the set torque lower limit value, the pure electric mode cruise is started, and otherwise, the engine is started to execute the hybrid mode cruise. The cruise control system can automatically switch between the pure electric mode cruise and the hybrid mode cruise, the cruise control operation is simple, the control burden of a hybrid electric vehicle on a driver is reduced, and the driving safety is improved.
Description
Technical Field
The invention relates to the field of whole vehicles, in particular to a constant-speed cruising device of a hybrid electric vehicle.
Background
With the increasing enhancement of energy crisis and human environmental awareness, the traditional fuel vehicles face a serious challenge, and hybrid vehicles are used as transition products of traditional internal combustion engines and pure electric vehicles, and are the most practical technical route for solving the problems of energy crisis, environmental pollution and the like at present. In the face of increasing automobile functions, the operation burden of drivers is urgently needed to be relieved so as to reduce traffic accidents caused by improper handling and untimely response of the drivers.
Because the difference between the power systems of the traditional fuel vehicle and the hybrid electric vehicle is large, the traditional fuel vehicle mainly adopts an engine EMS as a main control system, and a hybrid electric vehicle HCU as a main control system, and the constant cruise scheme of the traditional fuel vehicle cannot meet the requirements of the hybrid electric vehicle. In order to solve the problem, a constant-speed cruising device of the hybrid electric vehicle needs to be designed.
Disclosure of Invention
The invention aims to solve the technical problem of realizing a constant-speed cruising device of a hybrid electric vehicle, which has a reliable structure and is convenient to operate and control.
In order to achieve the purpose, the invention adopts the technical scheme that: a constant speed cruise control method of a hybrid electric vehicle comprises the steps of judging whether a vehicle meets a constant speed cruise starting condition after a signal for starting a constant speed cruise function is obtained, and if so, executing the constant speed cruise function;
calculating cruise required torque according to the vehicle speed, and distributing the torque;
if the SOC is larger than or equal to the set SOC upper limit value and the cruise demand torque is smaller than or equal to the set torque lower limit value, the pure electric mode cruise is started, and otherwise, the engine is started to execute the hybrid mode cruise.
When the constant-speed cruising function is executed and an acceleration or deceleration signal is received, the system increases or decreases the cruising driving constant speed.
And when the constant-speed cruise function is executed, if a brake pedal signal, an accelerator signal or a signal of upwards shifting the hand gear is received, the constant-speed cruise function is quitted.
The signal for starting the constant-speed cruising function is sent to a system through a key arranged in the vehicle, and the conditions required to be met by the constant-speed cruising include that the vehicle speed is greater than a set value and the key in the vehicle is triggered according to the requirement.
The requirements of constant-speed cruising include that the speed is more than or equal to 40km/h, and the bicycle is shifted down for two times.
The requirement for meeting the constant-speed cruise condition further comprises that the road condition is good.
A constant-speed cruise control system of a hybrid electric vehicle is characterized in that the system is connected with EMS, TCU, HCU, ESP, ICM, MFS, GSM and BMS through a CAN bus and performs mutual information interaction, the EMS is connected with an engine and controls the engine to work, the TCU is connected with DHT and controls the DHT to work, a power supply end of the DHT is connected with a power battery through an MCU, the HCU is connected with a brake pedal and an accelerator pedal, and the system executes the constant-speed cruise control method of the hybrid electric vehicle.
The vehicle is internally provided with a key for sending a signal for starting the constant-speed cruising function to the system.
And sending a key for controlling the driving constant speed of the constant speed cruise function to the system.
The GSM is connected with a hand-held gear shifting lever, and the hand-held gear shifting lever is provided with gears which are shifted upwards and downwards.
The cruise control system can automatically switch between the pure electric mode cruise and the hybrid mode cruise, the cruise control operation is simple, the control burden of a hybrid electric vehicle on a driver is reduced, and the driving safety is improved.
Drawings
The following is a brief description of the contents of each figure in the description of the present invention:
FIG. 1 is a block diagram of a constant speed cruise system of a hybrid electric vehicle;
FIG. 2 is a flow chart of a constant-speed cruise control method of a hybrid electric vehicle.
Detailed Description
The following description of the embodiments with reference to the drawings is provided to describe the embodiments of the present invention, and the embodiments of the present invention, such as the shapes and configurations of the components, the mutual positions and connection relationships of the components, the functions and working principles of the components, the manufacturing processes and the operation and use methods, etc., will be further described in detail to help those skilled in the art to more completely, accurately and deeply understand the inventive concept and technical solutions of the present invention.
As shown in fig. 1, the constant speed cruise system of the hybrid electric vehicle mainly includes the following components, namely, an HCU (vehicle control unit), an ESP (electronic stability system for vehicle), a brake pedal, an accelerator pedal, a power battery, a BMS (battery management system), a GSM (parking controller), an MFS (steering controller), an ICM (combination instrument module), a CDU (charging system), an electric air conditioner, an MCU (dual-motor controller), a TCU (transmission controller), an EMS (engine controller), an engine, and a DHT (hybrid box), wherein the engine is connected with the DHT (hybrid box) through mechanical transmission, and a wet clutch is disengaged; the power battery is in strong current connection with a double motor inside the DHT (hybrid electric box) through an MCU (double motor controller), the power battery is in strong current connection with the electric air conditioner through a CDU (charging system), and the CDU (charging system) provides power for a low-voltage apparatus through internal DC/DC; the HCU (vehicle control Unit) is in weak current connection with the EMS (Engine controller), the TCU (Transmission controller), the BMS (Battery management System), the GSM (Portable Gear controller), the MFS (steering wheel controller), the ESP (electronic stability System for vehicle), the ICM (Combined Instrument Module) and the like to realize information interaction, and the EMS, the TCU, the HCU, the ESP, the ICM, the MFS, the GSM and the BMS are connected through the CAN bus and perform mutual information interaction
The system is provided with a key for sending a signal for starting a constant-speed cruise function to the system in the vehicle, wherein the key can be a certain entity key, such as a multifunctional key on a steering wheel, and can also be integrated in a central control screen and embodied in a virtual key mode, and the GSM is connected with a pocket gear shifting lever which is provided with gears which are shifted upwards and downwards. A constant-speed cruising device of a hybrid electric vehicle comprises a vehicle control unit (HCU), a hand Gear (GSM), a steering wheel (MFS), a brake pedal and an accelerator pedal, wherein the HCU calculates required torque according to vehicle speed and distributes torque, the GSM realizes cruising entry and exit, the MFS adjusts cruise speed to increase and decrease, and the brake pedal and the accelerator pedal are stepped to realize cruising exit.
During specific operation, an ESP (electronic stability program) feeds the collected current speed back to an ICM (combination instrument module), a driver judges whether external conditions of cruising can be met or not according to road conditions and the speed, if the road conditions are good, the current speed is more than or equal to 40km/h, the conditions of cruising are met, the driver dials down a bosom gear twice, a GSM (bosom gear controller) sends requirements to an HCU (vehicle control unit), the HCU calculates the cruising requirement torque according to the speed, and if the BMS detects that the SOC is more than or equal to a set value and the HCU calculates the torque which can be provided by a motor of which the cruising requirement torque is less than or equal to a DHT (hybrid case), the pure electric mode cruising is achieved. If the BMS detects that the SOC is low and the HCU calculates the cruise demand torque and has a large demand, the engine is started to participate in driving, and the hybrid mode cruise is carried out. If a driver wants to adjust the cruising speed, an add-subtract key on a steering wheel is adjusted, an MFS (steering wheel controller) feeds back the requirement to an HCU (hybrid control unit), the HCU adjusts the vehicle speed according to the times of adding and subtracting the key, and the cruising speed upper limit meets the requirement of the regulation; if the driver wants to quit cruising, the driver can quit by stepping on the brake pedal, the accelerator pedal and pulling up the hand gear.
Whether the road condition is good or not can be analyzed through the platform comprehensive navigation information, if the current driving road section is congested, repaired, controlled by traffic and the like, the road condition is judged to be poor, the constant-speed cruise is not allowed to enter, and if the road condition is good, the constant-speed cruise function is allowed to enter.
According to the constant-speed cruising device of the hybrid electric vehicle, an HCU (vehicle control unit) automatically switches between pure electric mode cruising and hybrid mode cruising according to the requirements of a driver and the state of a hybrid system; the speed is more than or equal to 40km/h, and the hand gear is downwards pulled for two times, so that the vehicle can quickly enter a cruising state; the brake pedal, the accelerator pedal and the hand gear can be withdrawn after being stepped on. The cruise control system has the advantages that the cruise control system is very simple in cruise entering and exiting, the control burden of a driver is fully reduced, and the driving safety is improved.
The present invention has been described in detail with reference to the accompanying drawings, and it is to be understood that the invention is not limited to the specific embodiments described above, and that various insubstantial modifications of the inventive concepts and solutions, or their direct application to other applications without modification, are intended to be covered by the scope of the invention.
Claims (10)
1. A constant-speed cruise control method for a hybrid electric vehicle is characterized by comprising the following steps: after obtaining a signal for starting the constant-speed cruising function, judging that the automobile meets the condition for starting the constant-speed cruising function, and if the automobile meets the condition for starting the constant-speed cruising function, executing the constant-speed cruising function;
calculating cruise required torque according to the vehicle speed, and distributing the torque;
if the SOC is larger than or equal to the set SOC upper limit value and the cruise demand torque is smaller than or equal to the set torque lower limit value, the pure electric mode cruise is started, and otherwise, the engine is started to execute the hybrid mode cruise.
2. The control method according to claim 1, characterized in that: when the constant-speed cruising function is executed and an acceleration or deceleration signal is received, the system increases or decreases the cruising driving constant speed.
3. The control method according to claim 2, characterized in that: and when the constant-speed cruise function is executed, if a brake pedal signal, an accelerator signal or a signal of upwards shifting the hand gear is received, the constant-speed cruise function is quitted.
4. The control method according to claim 1, 2 or 3, characterized in that: the signal for starting the constant-speed cruising function is sent to the system through a key arranged in the vehicle, and the constant-speed cruising requirement meeting conditions comprise that the vehicle speed is greater than a set value and the key in the vehicle is triggered as required.
5. The control method according to claim 4, characterized in that: the requirement for meeting the constant-speed cruise condition further comprises that the road condition is good.
6. The control method according to claim 5, characterized in that: the requirements of constant-speed cruising include that the speed is more than or equal to 40km/h, and the bicycle is shifted down for two times.
7. A constant-speed cruising system of a hybrid electric vehicle is characterized in that the system is connected with EMS, TCU, HCU, ESP, ICM, MFS, GSM and BMS through a CAN bus and performs mutual information interaction, the EMS is connected with an engine and controls the engine to work, the TCU is connected with DHT and controls the DHT to work, a power supply end of the DHT is connected with a power battery through an MCU, and the HCU is connected with a brake pedal and an accelerator pedal, and the constant-speed cruising system of the hybrid electric vehicle is characterized in that: the system executes the constant-speed cruise control method of the hybrid electric vehicle according to any one of claims 1-6.
8. The hybrid vehicle cruise control system according to claim 7, characterized in that: the vehicle is internally provided with a key for sending a signal for starting the constant-speed cruising function to the system.
9. The hybrid vehicle cruise control system according to claim 8, characterized in that: and sending a key for controlling the driving constant speed of the constant speed cruise function to the system.
10. The hybrid vehicle cruise control system according to claim 7, 8 or 9, characterized in that: the GSM is connected with a hand-held gear shifting lever, and the hand-held gear shifting lever is provided with gears which are shifted upwards and downwards.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210828143.6A CN114954420A (en) | 2022-07-13 | 2022-07-13 | Constant-speed cruise control method and system for hybrid electric vehicle |
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| CN202210828143.6A CN114954420A (en) | 2022-07-13 | 2022-07-13 | Constant-speed cruise control method and system for hybrid electric vehicle |
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| CN114954420A true CN114954420A (en) | 2022-08-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116494946A (en) * | 2023-05-18 | 2023-07-28 | 广州汽车集团股份有限公司 | Hybrid power drive control method and device, electronic equipment and storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116494946A (en) * | 2023-05-18 | 2023-07-28 | 广州汽车集团股份有限公司 | Hybrid power drive control method and device, electronic equipment and storage medium |
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