CN116811600A - Energy-saving control method, equipment and medium for electric truck - Google Patents

Energy-saving control method, equipment and medium for electric truck Download PDF

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Publication number
CN116811600A
CN116811600A CN202311027178.0A CN202311027178A CN116811600A CN 116811600 A CN116811600 A CN 116811600A CN 202311027178 A CN202311027178 A CN 202311027178A CN 116811600 A CN116811600 A CN 116811600A
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China
Prior art keywords
preset
vehicle
torque
current
rotating speed
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CN202311027178.0A
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Chinese (zh)
Inventor
严江
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Weichai New Energy Commercial Vehicle Co Ltd
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Weichai New Energy Commercial Vehicle Co Ltd
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Priority to CN202311027178.0A priority Critical patent/CN116811600A/en
Publication of CN116811600A publication Critical patent/CN116811600A/en
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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
    • 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
    • B60L2240/421—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
    • B60L2240/423—Torque
    • 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
    • B60L2240/60—Navigation input
    • B60L2240/64—Road conditions
    • 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)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The embodiment of the application discloses an energy-saving control method, equipment and medium for an electric truck. Determining a preset reference motor efficiency high-efficiency area based on vehicle information of an electric truck; acquiring current road condition information and accelerator pedal opening information, and adjusting a preset reference motor efficiency high-efficiency area based on the current road condition information and the accelerator pedal opening information to obtain an actual motor efficiency high-efficiency area; under the condition that the electric cargo vehicle is in a non-full-load state, starting a vehicle preset economic mode; when the vehicle is in the running process of the vehicle in a preset economic mode, acquiring the current rotating speed and the current torque of the electric cargo vehicle; based on the actual motor efficiency high-efficiency area, the current rotating speed, the current torque and the preset double-speed-ratio drive axle, the running rotating state of the electric truck is adjusted so as to realize energy-saving control of the electric truck. By the method, the power performance of the vehicle can be maintained while the vehicle saves energy.

Description

Energy-saving control method, equipment and medium for electric truck
Technical Field
The application relates to the technical field of electric automobile control, in particular to an energy-saving control method, energy-saving control equipment and energy-saving control medium for an electric truck.
Background
With the gradual increase of the permeability of an electric cargo vehicle, how to increase the endurance mileage of the electric cargo vehicle is also an important technical problem for vehicle manufacturers. Generally, the energy consumption in the whole vehicle driving process is reduced by increasing an economic mode of the vehicle, so that the duration of the vehicle is increased. The main ones affecting the economy mode are motor systems, power battery systems, and other high voltage systems on the vehicle. When the vehicle starts the economy mode, the power performance of the whole vehicle part is reduced.
For electric cargo vehicles, because of the characteristics of wide cargo weight range, the electric motor with larger power and torque is usually matched, but the electric cargo vehicles can cause excessive power and increase energy consumption when being lightly loaded. The existing method generally reduces the energy consumption in light load by limiting the output torque of the vehicle, but the mode is difficult to ensure the dynamic property of the vehicle when encountering complex road conditions.
Disclosure of Invention
The embodiment of the application provides an energy-saving control method, equipment and medium for an electric truck, which are used for solving the following technical problems: in the prior art, the power consumption is reduced by limiting the output torque of the vehicle, so that the dynamic property of the vehicle is difficult to ensure when the vehicle encounters complex road conditions.
The embodiment of the application adopts the following technical scheme:
the embodiment of the application provides an energy-saving control method for an electric cargo vehicle. Determining a preset reference motor efficiency high-efficiency area based on vehicle information of an electric truck; acquiring current road condition information and accelerator pedal opening information, and adjusting a preset reference motor efficiency high-efficiency area based on the current road condition information and the accelerator pedal opening information to obtain an actual motor efficiency high-efficiency area; under the condition that the electric cargo vehicle is in a non-full-load state, starting a vehicle preset economic mode; when the vehicle is in the running process of the vehicle in a preset economic mode, acquiring the current rotating speed and the current torque of the electric cargo vehicle; based on the actual motor efficiency high-efficiency area, the current rotating speed, the current torque and the preset double-speed-ratio drive axle, the running rotating state of the electric truck is adjusted so as to realize energy-saving control of the electric truck.
According to the embodiment of the application, the preset reference motor efficiency high-efficiency area is determined, and the preset reference motor efficiency high-efficiency area is adjusted based on the current road condition information and the accelerator pedal opening degree information, so that the actual motor efficiency high-efficiency area is obtained. The motor high-efficiency area range can be adjusted based on factors such as different loads of the electric cargo truck, different driving conditions, driving habits of a driver and the like, so that the obtained motor high-efficiency area is more accurate. Secondly, the embodiment of the application adjusts the running state of the electric truck based on the effective area of the actual motor efficiency, the current rotating speed, the current torque and the preset double-speed-ratio drive axle, and can keep the dynamic property of the vehicle while saving the energy of the vehicle.
In one implementation of the present application, determining a preset reference motor efficiency efficient area based on vehicle information of an electric truck specifically includes: acquiring load information of an electric cargo vehicle; determining a full-load design value corresponding to the electric cargo vehicle based on vehicle model information of the electric cargo vehicle; determining a ratio relation corresponding to the electric truck based on the load information and the full-load design value; determining a preset reference motor efficiency high-efficiency area corresponding to the electric truck based on the ratio relation and a preset high-efficiency area information table; the preset high-efficiency area information table comprises a plurality of ratio relations and high-efficiency areas corresponding to the ratio relations respectively.
In one implementation of the application, the motor efficiency efficient region includes at least one or more of a minimum rotational speed, a maximum rotational speed, an optimal rotational speed, a minimum torque, a maximum torque, and an optimal torque.
In one implementation of the present application, the driving state of the electric truck is adjusted based on the actual motor efficiency efficient area, the current rotation speed, the current torque and the preset double speed ratio drive axle, and specifically includes: comparing the current torque with different torques corresponding to the efficient area of the actual motor efficiency, and comparing the current rotating speed with different rotating speeds corresponding to the efficient area of the actual motor efficiency; and adjusting the driving rotation state of the electric truck based on the torque comparison result, the rotation speed comparison result and the preset double-speed-ratio drive axle.
In one implementation of the present application, the method for adjusting the driving state of the electric truck based on the torque comparison result, the rotation speed comparison result and the preset two-speed ratio drive axle specifically includes: under the condition that the current torque is not greater than the highest torque corresponding to the effective area of the actual motor efficiency and the current rotating speed is not greater than the highest rotating speed corresponding to the effective area of the actual motor efficiency, switching the preset double-speed-ratio drive axle to a small-speed-ratio state; or switching the preset double-speed-ratio drive axle to a large-speed-ratio state under the condition that the current torque is larger than the optimal torque corresponding to the actual motor efficiency high-efficiency area and the current rotating speed is smaller than the lowest rotating speed corresponding to the actual motor efficiency high-efficiency area; or under the condition that the current torque is larger than the optimal torque corresponding to the actual motor efficiency high-efficiency area, the current rotating speed is larger than the lowest rotating speed corresponding to the actual motor efficiency high-efficiency area, and the current rotating speed is smaller than the optimal rotating speed corresponding to the actual motor efficiency high-efficiency area, the preset double-speed-ratio drive axle is switched to a large-speed-ratio state.
In one implementation of the present application, current road condition information and accelerator pedal opening information are obtained, and a preset reference motor efficiency efficient area is adjusted based on the current road condition information and accelerator pedal opening information to obtain an actual motor efficiency efficient area, which specifically includes: acquiring accelerator pedal opening information in real time, and comparing the accelerator pedal opening information with a preset accelerator pedal opening data table to determine a first reference maximum rotating speed and a first reference maximum torque corresponding to the accelerator pedal opening information; the preset accelerator pedal opening data table comprises a plurality of accelerator pedal openings, and also comprises a highest rotating speed and a highest torque which respectively correspond to the accelerator pedal openings; acquiring current road condition information in real time, and determining a second reference highest rotating speed and a second reference highest torque based on the road condition information; determining a reference maximum rotational speed based on the first reference maximum rotational speed and the second reference maximum rotational speed, and determining a reference maximum torque based on the first reference maximum torque and the second reference maximum torque; and adjusting the preset reference motor efficiency high-efficiency area based on the highest rotating speed and the highest torque so as to obtain the actual motor efficiency high-efficiency area.
In one implementation manner of the application, current road condition information is obtained in real time, and a second reference maximum rotating speed and a second reference maximum torque are determined based on the road condition information, which specifically comprises the following steps: acquiring the inclination angle of the current road and the road surface leveling condition in real time; under the condition that the inclination angle is larger than a preset angle threshold value, adjusting the preset highest rotating speed and the preset highest torque based on the difference value between the inclination angle and the preset angle threshold value to obtain a third reference rotating speed and a third reference torque; and obtaining a road surface flatness score based on the road surface flatness condition, and respectively adjusting the third reference rotating speed and the reference third torque based on the difference between the road surface flatness score and the preset flatness score threshold under the condition that the road surface flatness score is smaller than the preset flatness score threshold so as to obtain a second reference highest rotating speed and a second reference highest torque.
In one implementation manner of the present application, when the electric cargo vehicle is in a non-full load state, the method for starting the vehicle preset economic mode specifically includes: in the case that the electric cargo vehicle is in a non-full load state, the vehicle preset economy mode is started in response to an operation instruction transmitted by a multi-power switch provided on the cab console.
The embodiment of the application provides energy-saving control equipment of an electric cargo vehicle, which comprises the following components: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executable by the at least one processor to enable the at least one processor to: determining a preset reference motor efficiency high-efficiency area based on vehicle information of the electric truck; acquiring current road condition information and accelerator pedal opening information, and adjusting a preset reference motor efficiency high-efficiency area based on the current road condition information and the accelerator pedal opening information to obtain an actual motor efficiency high-efficiency area; under the condition that the electric cargo vehicle is in a non-full-load state, starting a vehicle preset economic mode; when the vehicle is in the running process of the vehicle in a preset economic mode, acquiring the current rotating speed and the current torque of the electric cargo vehicle; based on the actual motor efficiency high-efficiency area, the current rotating speed, the current torque and the preset double-speed-ratio drive axle, the running rotating state of the electric truck is adjusted so as to realize energy-saving control of the electric truck.
The non-volatile computer storage medium provided by the embodiment of the application stores computer executable instructions, and the computer executable instructions are set as follows: determining a preset reference motor efficiency high-efficiency area based on vehicle information of the electric truck; acquiring current road condition information and accelerator pedal opening information, and adjusting a preset reference motor efficiency high-efficiency area based on the current road condition information and the accelerator pedal opening information to obtain an actual motor efficiency high-efficiency area; under the condition that the electric cargo vehicle is in a non-full-load state, starting a vehicle preset economic mode; when the vehicle is in the running process of the vehicle in a preset economic mode, acquiring the current rotating speed and the current torque of the electric cargo vehicle; based on the actual motor efficiency high-efficiency area, the current rotating speed, the current torque and the preset double-speed-ratio drive axle, the running rotating state of the electric truck is adjusted so as to realize energy-saving control of the electric truck.
The above at least one technical scheme adopted by the embodiment of the application can achieve the following beneficial effects: according to the embodiment of the application, the preset reference motor efficiency high-efficiency area is determined, and the preset reference motor efficiency high-efficiency area is adjusted based on the current road condition information and the accelerator pedal opening degree information, so that the actual motor efficiency high-efficiency area is obtained. The motor high-efficiency area range can be adjusted based on factors such as different loads of the electric cargo truck, different driving conditions, driving habits of a driver and the like, so that the obtained motor high-efficiency area is more accurate. Secondly, the embodiment of the application adjusts the running state of the electric truck based on the effective area of the actual motor efficiency, the current rotating speed, the current torque and the preset double-speed-ratio drive axle, and can keep the dynamic property of the vehicle while saving the energy of the vehicle.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art. In the drawings:
FIG. 1 is a flow chart of an energy-saving control method for an electric cargo vehicle according to an embodiment of the application;
fig. 2 is a schematic structural diagram of an energy-saving control device for an electric cargo vehicle according to an embodiment of the present application.
Detailed Description
The embodiment of the application provides an energy-saving control method, equipment and medium for an electric cargo vehicle.
In order to make the technical solution of the present application better understood by those skilled in the art, the technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
The following describes the technical scheme provided by the embodiment of the application in detail through the attached drawings.
Fig. 1 is a flowchart of an energy-saving control method for an electric cargo vehicle according to an embodiment of the present application, where, as shown in fig. 1, the energy-saving control method for an electric cargo vehicle includes the following steps:
s101, determining a preset reference motor efficiency high-efficiency area based on vehicle information of the electric truck.
In one embodiment of the application, load information of an electric cargo vehicle is obtained. And determining a full-load design value corresponding to the electric cargo vehicle based on the vehicle model information of the electric cargo vehicle. And determining the corresponding ratio relation of the electric truck based on the load information and the full-load design value. Determining a preset reference motor efficiency high-efficiency area corresponding to the electric truck based on the ratio relation and a preset high-efficiency area information table; the preset high-efficiency area information table comprises a plurality of ratio relations and high-efficiency areas corresponding to the ratio relations respectively.
In one embodiment of the application, the motor efficiency efficient region includes at least one or more of a minimum rotational speed, a maximum rotational speed, an optimal rotational speed, a minimum torque, a maximum torque, and an optimal torque.
Specifically, the embodiment of the application sets the lowest rotation speed n1, the highest rotation speed n2, the optimal rotation speed n0, the lowest torque T1, the highest torque T2 and the optimal torque T0 according to the high-efficiency region of the motor efficiency characteristic.
Further, in the embodiment of the application, the highest rotating speed and the highest torque are set as a range value, and correspond to the high-efficiency area range of the motor. Vehicle load information is acquired through the load sensor, and full-load design values corresponding to the electric cargo car are determined through vehicle model information of the electric cargo car, and different vehicle models correspond to different full-load design values. And calculating the ratio of the vehicle load to the vehicle full-load design value to obtain the ratio relation between the vehicle load and the vehicle full-load design value.
Further, based on the ratio relation, inquiring is carried out in a preset high-efficiency area information table so as to determine a preset reference motor efficiency high-efficiency area corresponding to the ratio relation in the preset high-efficiency area information table, and accordingly, corresponding preset highest rotating speed and preset highest torque are determined according to the preset reference motor efficiency high-efficiency area. The embodiment of the application is provided with the preset high-efficiency area information table, different vehicle types are arranged in the preset high-efficiency area information table, different ratio relations are arranged based on the different vehicle types, and the preset high-efficiency area information table also comprises high-efficiency areas respectively corresponding to the different ratio relations.
S102, acquiring current road condition information and accelerator pedal opening information, and adjusting a preset reference motor efficiency high-efficiency area based on the current road condition information and the accelerator pedal opening information to obtain an actual motor efficiency high-efficiency area.
In one embodiment of the application, accelerator pedal opening information is acquired in real time, and the accelerator pedal opening information is compared with a preset accelerator pedal opening data table to determine a first reference maximum rotation speed and a first reference maximum torque corresponding to the accelerator pedal opening information. The preset accelerator pedal opening data table comprises a plurality of accelerator pedal openings, and also comprises a highest rotating speed and a highest torque which correspond to the accelerator pedal openings respectively, current road condition information is obtained in real time, and a second reference highest rotating speed and a second reference highest torque are determined based on the road condition information. The reference maximum rotational speed is determined based on the first reference maximum rotational speed and the second reference maximum rotational speed, and the reference maximum torque is determined based on the first reference maximum torque and the second reference maximum torque. And adjusting the preset reference motor efficiency high-efficiency area based on the highest rotating speed and the highest torque so as to obtain the actual motor efficiency high-efficiency area.
Specifically, the opening degree information of the accelerator pedal is acquired in real time during the running of the vehicle, and the stepping opening degree of the accelerator pedal is different depending on the driving habits of different drivers. The embodiment of the application is provided with a preset accelerator pedal opening data table in advance, wherein the preset accelerator pedal opening data table comprises different electric automobile types, accelerator pedal openings respectively corresponding to different vehicle types, and the preset accelerator pedal opening data table also comprises the highest rotating speed and the highest torque respectively corresponding to different accelerator pedal openings. And comparing the accelerator pedal opening information corresponding to the current driver with a preset accelerator pedal opening data table to determine a first reference maximum rotating speed and a first reference maximum torque corresponding to the current accelerator pedal opening information.
In one embodiment of the application, the inclination angle and the road surface leveling condition of the current road are obtained in real time. And under the condition that the inclination angle is larger than a preset angle threshold value, adjusting the preset highest rotating speed and the preset highest torque based on the difference value between the inclination angle and the preset angle threshold value so as to obtain a third reference rotating speed and a third reference torque. And obtaining a road surface flatness score based on the road surface flatness condition, and respectively adjusting the third reference rotating speed and the reference third torque based on the difference between the road surface flatness score and the preset flatness score threshold under the condition that the road surface flatness score is smaller than the preset flatness score threshold so as to obtain a second reference highest rotating speed and a second reference highest torque.
Specifically, during the running of the vehicle, road condition information, for example, an inclination angle of a road, flatness information of the road, and the like are acquired in real time. The larger the inclination angle of the road is, the larger the power required by the electric automobile in the running process is. The worse the road flatness, the greater the power required by the electric automobile in the driving process. According to the embodiment of the application, the preset angle threshold value is calculated based on the currently acquired road inclination angle, the difference between the preset angle threshold value and the preset angle threshold value is calculated, and the preset maximum rotating speed and the preset maximum torque are adjusted based on the difference. For example, the calculated current road inclination angle is larger than the preset angle threshold, and as the difference between the calculated current road inclination angle and the calculated current road inclination angle is larger, the adjustment range of the current preset maximum rotating speed is larger, namely, the current preset maximum rotating speed is subjected to the adjustment processing, and meanwhile, the adjustment range of the current preset maximum torque is also larger, namely, the current preset maximum torque is subjected to the adjustment processing. So as to obtain the third reference maximum rotation speed and the third reference maximum torque.
Further, the obtained flatness of the current road is analyzed to obtain a road surface flatness score corresponding to the flatness of the current road. And calculating the difference value between the road surface flatness score and the preset flatness score, and adjusting the third reference rotating speed and the third reference torque based on the difference value between the road surface flatness score and the preset flatness score. For example, if the road surface flatness score is greater than the preset flatness score, the difference between the road surface flatness score and the preset flatness score is greater, the third reference rotation speed is subjected to the step-up processing, and meanwhile the third reference torque is subjected to the step-up processing, so that the second reference maximum rotation speed and the second reference maximum torque are obtained.
Further, a first reference maximum rotational speed and a second reference maximum rotational speed determined based on the opening degree of the accelerator pedal are used for determining the reference maximum rotational speed, and the first reference maximum torque and the second reference maximum torque are compared for determining the reference maximum torque. The reference highest rotating speed is used as the highest rotating speed of a preset reference motor efficiency high-efficiency area, the optimal rotating speed and the lowest rotating speed area range of the preset reference motor efficiency high-efficiency area are adjusted based on the highest rotating speed, the reference highest torque is used as the highest torque of the preset reference motor efficiency high-efficiency area, and the optimal torque and the lowest torque of the preset reference motor efficiency high-efficiency area are adjusted based on the highest torque. And obtaining an actual motor efficiency high-efficiency area through the adjusted rotating speed area and torque area.
S103, starting a vehicle preset economic mode under the condition that the electric cargo vehicle is in a non-full-load state.
In one embodiment of the application, the vehicle preset economy mode is initiated in response to an operation command sent by a multi-power switch provided on the cab console with the electric cargo vehicle in a non-fully loaded state.
Specifically, when the electric cargo vehicle is in a non-full load state, a control switch on the cab console is turned on, and the vehicle control unit starts a vehicle preset economy mode.
S104, when the vehicle is in the running process of the vehicle in the preset economic mode, acquiring the current rotating speed and the current torque of the electric cargo vehicle.
In one embodiment of the application, when the vehicle is in the running process of the vehicle in the preset economic mode, the rotating speed and the torque of the electric vehicle are collected in real time, and the running state of the electric truck is regulated based on the obtained current rotating speed and the current torque so as to realize the energy-saving control of the electric truck based on the current rotating speed and the torque.
S105, adjusting the running state of the electric truck based on the actual motor efficiency high-efficiency area, the current rotating speed, the current torque and the preset double-speed-ratio drive axle so as to realize energy-saving control of the electric truck.
In one embodiment of the present application, the current torque is compared to different torques corresponding to the actual motor efficiency efficient region, and the current rotational speed is compared to different rotational speeds corresponding to the actual motor efficiency efficient region. And adjusting the driving rotation state of the electric truck based on the torque comparison result, the rotation speed comparison result and the preset double-speed-ratio drive axle.
In one embodiment of the present application, the preset double speed ratio drive axle is switched to the small speed ratio state when the current torque is not greater than the highest torque corresponding to the actual motor efficiency efficient region and the current rotation speed is not greater than the highest rotation speed corresponding to the actual motor efficiency efficient region. Or under the condition that the current torque is larger than the optimal torque corresponding to the effective area of the actual motor efficiency and the current rotating speed is smaller than the lowest rotating speed corresponding to the effective area of the actual motor efficiency, switching the preset double-speed-ratio drive axle to a large-speed-ratio state. Or under the condition that the current torque is larger than the optimal torque corresponding to the actual motor efficiency high-efficiency area, the current rotating speed is larger than the lowest rotating speed corresponding to the actual motor efficiency high-efficiency area, and the current rotating speed is smaller than the optimal rotating speed corresponding to the actual motor efficiency high-efficiency area, the preset double-speed-ratio drive axle is switched to a large-speed-ratio state.
Specifically, the current torque is compared with different torques corresponding to the actual motor efficiency efficient region, and the current rotational speed is compared with different rotational speeds corresponding to the actual motor efficiency efficient region. And if the current torque is not more than the highest torque T2 corresponding to the effective area of the actual motor efficiency, and the current rotating speed is not more than the highest rotating speed n2 corresponding to the effective area of the actual motor efficiency, switching the preset double-speed-ratio drive axle to a small speed ratio. If the current rotating speed is lower than the lowest rotating speed n1 corresponding to the actual motor efficiency high-efficiency area and the current torque is higher than the optimal torque T0 corresponding to the actual motor efficiency high-efficiency area, the preset double-speed-ratio drive axle is switched to a large speed ratio, the rotating speed of the vehicle is improved, and the load rate of the vehicle is reduced. If the current rotating speed is higher than the lowest rotating speed n1 corresponding to the efficient area of the actual motor and is lower than the optimal rotating speed n0, and the current torque is higher than the optimal torque T0 corresponding to the efficient area of the actual motor, the preset double-speed-ratio drive axle is switched to a large speed ratio, the rotating speed of the vehicle is improved, and the load rate of the vehicle is reduced.
In the embodiment of the application, n2 and T2 are set as a range value, and correspond to the efficient area range of the motor efficiency. And determining a preset T2 value and an n2 value according to the ratio relation between the vehicle load information acquired by the load sensor and the vehicle full-load design value. And the T2 value and the n2 value are adjusted in real time according to the road information of actual running and the information of the opening degree of the accelerator pedal. According to different loads and different running conditions, the running conditions of the vehicle are adjusted in real time, the purpose of improving the driving mileage of the vehicle is achieved, and the power performance is kept not bad. The transmission ratio of the vehicle is adjusted through the double-ratio drive axle, so that the power performance of the vehicle can be maintained while the vehicle saves energy.
Fig. 2 is a schematic structural diagram of an energy-saving control device for an electric cargo vehicle according to an embodiment of the present application. As shown in fig. 2, the energy-saving control device for an electric cargo vehicle includes: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to: determining a preset reference motor efficiency high-efficiency area based on vehicle information of the electric truck; acquiring current road condition information and accelerator pedal opening information, and adjusting the preset reference motor efficiency high-efficiency area based on the current road condition information and the accelerator pedal opening information to obtain an actual motor efficiency high-efficiency area; under the condition that the electric cargo vehicle is in a non-full-load state, starting a vehicle preset economic mode; when the vehicle is in the running process of the vehicle preset economic mode, acquiring the current rotating speed and the current torque of the electric truck; and adjusting the running state of the electric truck based on the actual motor efficiency high-efficiency area, the current rotating speed, the current torque and a preset double-speed-ratio drive axle so as to realize energy-saving control of the electric truck.
Embodiments of the present application also provide a non-volatile computer storage medium storing computer-executable instructions configured to: determining a preset reference motor efficiency high-efficiency area based on vehicle information of the electric truck; acquiring current road condition information and accelerator pedal opening information, and adjusting the preset reference motor efficiency high-efficiency area based on the current road condition information and the accelerator pedal opening information to obtain an actual motor efficiency high-efficiency area; under the condition that the electric cargo vehicle is in a non-full-load state, starting a vehicle preset economic mode; when the vehicle is in the running process of the vehicle preset economic mode, acquiring the current rotating speed and the current torque of the electric truck; and adjusting the running state of the electric truck based on the actual motor efficiency high-efficiency area, the current rotating speed, the current torque and a preset double-speed-ratio drive axle so as to realize energy-saving control of the electric truck.
The embodiments of the present application are described in a progressive manner, and the same and similar parts of the embodiments are all referred to each other, and each embodiment is mainly described in the differences from the other embodiments. In particular, for apparatus, devices, non-volatile computer storage medium embodiments, the description is relatively simple, as it is substantially similar to method embodiments, with reference to the section of the method embodiments being relevant.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the embodiments of the application by those skilled in the art. Such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. An energy-saving control method for an electric truck, which is characterized by comprising the following steps:
determining a preset reference motor efficiency high-efficiency area based on vehicle information of the electric truck;
acquiring current road condition information and accelerator pedal opening information, and adjusting the preset reference motor efficiency high-efficiency area based on the current road condition information and the accelerator pedal opening information to obtain an actual motor efficiency high-efficiency area;
under the condition that the electric cargo vehicle is in a non-full-load state, starting a vehicle preset economic mode;
when the vehicle is in the running process of the vehicle preset economic mode, acquiring the current rotating speed and the current torque of the electric truck;
and adjusting the running state of the electric truck based on the actual motor efficiency high-efficiency area, the current rotating speed, the current torque and a preset double-speed-ratio drive axle so as to realize energy-saving control of the electric truck.
2. The energy-saving control method for the electric cargo vehicle according to claim 1, wherein the determining the efficient area of the preset reference motor based on the vehicle information of the electric cargo vehicle specifically comprises:
acquiring load information of the electric cargo vehicle;
determining a full-load design value corresponding to the electric cargo vehicle based on the vehicle model information of the electric cargo vehicle;
determining a ratio relation corresponding to the electric truck based on the load information and the full-load design value;
determining a preset reference motor efficiency high-efficiency area corresponding to the electric truck based on the ratio relation and a preset high-efficiency area information table; the preset high-efficiency area information table comprises a plurality of ratio relations and high-efficiency areas corresponding to the ratio relations respectively.
3. The method of claim 2, wherein the motor efficiency efficient region includes at least one or more of a minimum rotational speed, a maximum rotational speed, an optimal rotational speed, a minimum torque, a maximum torque, and an optimal torque.
4. The energy-saving control method of an electric truck according to claim 1, wherein the adjusting the driving state of the electric truck based on the actual motor efficiency efficient area, the current rotation speed, the current torque and a preset two-speed ratio drive axle specifically comprises:
comparing the current torque with different torques corresponding to the actual motor efficiency high-efficiency area, and comparing the current rotating speed with different rotating speeds corresponding to the actual motor efficiency high-efficiency area;
and adjusting the running rotation state of the electric truck based on the torque comparison result, the rotation speed comparison result and the preset double-speed-ratio drive axle.
5. The energy-saving control method for an electric truck according to claim 4, wherein the adjusting the driving state of the electric truck based on the torque comparison result, the rotation speed comparison result and the preset two-speed ratio drive axle specifically comprises:
switching the preset double-speed-ratio drive axle to a small-speed-ratio state under the condition that the current torque is not greater than the highest torque corresponding to the actual motor efficiency high-efficiency area and the current rotating speed is not greater than the highest rotating speed corresponding to the actual motor efficiency high-efficiency area; or (b)
Switching the preset double-speed-ratio drive axle to a large-speed-ratio state under the condition that the current torque is larger than the optimal torque corresponding to the actual motor efficiency high-efficiency area and the current rotating speed is smaller than the lowest rotating speed corresponding to the actual motor efficiency high-efficiency area; or (b)
And under the condition that the current torque is larger than the optimal torque corresponding to the actual motor efficiency efficient area, the current rotating speed is larger than the lowest rotating speed corresponding to the actual motor efficiency efficient area, and the current rotating speed is smaller than the optimal rotating speed corresponding to the actual motor efficiency efficient area, switching the preset double-speed-ratio drive axle to a large-speed-ratio state.
6. The method for controlling energy saving of an electric truck according to claim 1, wherein the obtaining current road condition information and accelerator pedal opening information, and adjusting the preset reference motor efficiency efficient area based on the current road condition information and the accelerator pedal opening information to obtain an actual motor efficiency efficient area, specifically comprises:
acquiring accelerator pedal opening information in real time, and comparing the accelerator pedal opening information with a preset accelerator pedal opening data table to determine a first reference maximum rotating speed and a first reference maximum torque corresponding to the accelerator pedal opening information; the preset accelerator pedal opening data table comprises a plurality of accelerator pedal openings, and also comprises a highest rotating speed and a highest torque which respectively correspond to the accelerator pedal openings; and
acquiring current road condition information in real time, and determining a second reference highest rotating speed and a second reference highest torque based on the road condition information;
determining a reference maximum rotational speed based on the first reference maximum rotational speed and the second reference maximum rotational speed, and determining a reference maximum torque based on the first reference maximum torque and the second reference maximum torque;
and adjusting the preset reference motor efficiency high-efficiency area based on the highest rotating speed and the highest torque so as to obtain an actual motor efficiency high-efficiency area.
7. The method for controlling energy saving of an electric truck according to claim 6, wherein the obtaining current road condition information in real time, and determining the second reference maximum rotation speed and the second reference maximum torque based on the road condition information, specifically comprises:
acquiring the inclination angle of the current road and the road surface leveling condition in real time;
under the condition that the inclination angle is larger than a preset angle threshold value, adjusting a preset highest rotating speed and a preset highest torque based on a difference value between the inclination angle and the preset angle threshold value to obtain a third reference rotating speed and a reference third torque;
and obtaining a road surface flatness score based on the road surface flatness condition, and respectively adjusting the third reference rotating speed and the reference third torque based on the difference between the road surface flatness score and the preset flatness score threshold under the condition that the road surface flatness score is smaller than the preset flatness score threshold so as to obtain the second reference highest rotating speed and the second reference highest torque.
8. The method for controlling energy saving of an electric cargo vehicle according to claim 1, wherein when the electric cargo vehicle is in a non-fully loaded state, starting a preset economic mode of the vehicle specifically comprises:
and under the condition that the electric cargo vehicle is in a non-full-load state, responding to an operation instruction sent by a multi-power switch arranged on a cab console, and starting the vehicle to preset an economic mode.
9. An electric cargo vehicle energy saving control device comprising:
at least one processor; the method comprises the steps of,
a memory communicatively coupled to the at least one processor; wherein, the liquid crystal display device comprises a liquid crystal display device,
the memory stores instructions executable by the at least one processor to enable the at least one processor to:
determining a preset reference motor efficiency high-efficiency area based on vehicle information of the electric truck;
acquiring current road condition information and accelerator pedal opening information, and adjusting the preset reference motor efficiency high-efficiency area based on the current road condition information and the accelerator pedal opening information to obtain an actual motor efficiency high-efficiency area;
under the condition that the electric cargo vehicle is in a non-full-load state, starting a vehicle preset economic mode;
when the vehicle is in the running process of the vehicle preset economic mode, acquiring the current rotating speed and the current torque of the electric truck;
and adjusting the running state of the electric truck based on the actual motor efficiency high-efficiency area, the current rotating speed, the current torque and a preset double-speed-ratio drive axle so as to realize energy-saving control of the electric truck.
10. A non-transitory computer storage medium storing computer-executable instructions configured to:
determining a preset reference motor efficiency high-efficiency area based on vehicle information of the electric truck;
acquiring current road condition information and accelerator pedal opening information, and adjusting the preset reference motor efficiency high-efficiency area based on the current road condition information and the accelerator pedal opening information to obtain an actual motor efficiency high-efficiency area;
under the condition that the electric cargo vehicle is in a non-full-load state, starting a vehicle preset economic mode;
when the vehicle is in the running process of the vehicle preset economic mode, acquiring the current rotating speed and the current torque of the electric truck;
and adjusting the running state of the electric truck based on the actual motor efficiency high-efficiency area, the current rotating speed, the current torque and a preset double-speed-ratio drive axle so as to realize energy-saving control of the electric truck.
CN202311027178.0A 2023-08-15 2023-08-15 Energy-saving control method, equipment and medium for electric truck Pending CN116811600A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311027178.0A CN116811600A (en) 2023-08-15 2023-08-15 Energy-saving control method, equipment and medium for electric truck

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311027178.0A CN116811600A (en) 2023-08-15 2023-08-15 Energy-saving control method, equipment and medium for electric truck

Publications (1)

Publication Number Publication Date
CN116811600A true CN116811600A (en) 2023-09-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311027178.0A Pending CN116811600A (en) 2023-08-15 2023-08-15 Energy-saving control method, equipment and medium for electric truck

Country Status (1)

Country Link
CN (1) CN116811600A (en)

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