CN115042629B - Pure electric bus economic driving prompting method and system - Google Patents
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Abstract
The invention provides an economic driving prompting method for a pure electric bus, and belongs to the technical field of electric automobiles; acquiring operation parameter data of a pure electric bus; generating a power meter reminder, an instantaneous electricity consumption value, an average electricity consumption value and a driving range evaluation value according to the acquired parameter data, and displaying the power meter reminder, the instantaneous electricity consumption value, the average electricity consumption value and the driving range evaluation value on an instrument panel; the invention can display instant electricity consumption and average electricity consumption in real time, help a driver to intuitively know the electricity consumption condition of the whole vehicle in the driving process, can display the driving mileage of the vehicle in real time, provide reference for the evaluation of the subsequent driving mileage, can display the progress bar of the driving power meter in real time, display the progress bar according to areas with different colors, and carry out real-time visual feedback on the driving normalization of the driver.
Description
Technical Field
The invention relates to the technical field of electric automobiles, in particular to an economic driving prompting method and system for a pure electric bus.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
With the aggravation of environmental pollution in the world, new energy automobiles are paid attention to in recent years, and under the strong support of government, automobile enterprises raise a new energy automobile hot tide, and especially in the field of buses, pure electric buses become the main stream of markets.
The inventor finds that with the development of the pure electric passenger car, the requirements of customers on the pure electric passenger car are higher and higher, and particularly the attention to the energy consumption, the endurance mileage and the like of the vehicle is higher; however, at present, no scheme for guiding a driver how to drive a vehicle more power-saving and more reasonable in real time exists, so that a customer is easy to complain about a host factory when the energy consumption value of the vehicle is higher or the endurance mileage is not satisfied.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides an economic driving prompt method and system for a pure electric bus, which can display instantaneous electricity consumption and average electricity consumption in real time and help a driver to intuitively and clearly know the electricity consumption of the whole bus in the driving process; the driving mileage of the vehicle can be displayed in real time, and a reference is provided for the evaluation of the subsequent driving mileage; meanwhile, the progress bar of the driving power meter can be displayed in real time, and real-time visual feedback can be carried out on the driving normalization of the driver according to the display of areas with different colors.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the invention provides an economic driving prompting method for a pure electric bus.
An economic driving prompting method for a pure electric bus comprises the following steps:
acquiring operation parameter data of a pure electric bus;
generating a power meter reminder, an instantaneous electricity consumption value, an average electricity consumption value and a driving range evaluation value according to the acquired parameter data, and displaying the power meter reminder, the instantaneous electricity consumption value, the average electricity consumption value and the driving range evaluation value on an instrument panel;
wherein, the power meter is reminded and is included:
when the opening of the brake pedal exists, the percentage of the power meter is the opening of the brake pedal; when the opening degree of the brake pedal is not available, the percentage of the power meter is the percentage of the power of the driving system; the power meter reminder is displayed in the form of a progress bar, with different colors representing different power percentage partitions.
As an alternative implementation, the power percentage PM% is:
p0 is the drive system instantaneous power, and P1 is the drive system peak power.
As an alternative to this implementation,
the instantaneous electricity consumption at the display unit of Kwh/H is: int=i×u/1000;
the instantaneous electricity consumption at display unit Kwh/Km is:
wherein I is the working current of the pure electric bus, and U is the working voltage of the pure electric bus.
As an alternative implementation manner, the average power consumption logic calculation is performed by taking a period as a unit, the upper high voltage of the nth vehicle is finished as a period starting point, the lower high voltage of the nth vehicle is finished as a period ending point, the interval is an independent period, the power consumption unit is Kwh/Km, the calculation period is DeltaT, the message transmission period is DeltaT 1, and the whole vehicle ON gear power supply is effectively controlled to start transmission;
when the travel distance is less than or equal to 5Km, the average power consumption transmission value AVG Transmitting ＝0.95*S Average of ，S Average of AVG used for last calculation of driving range of whole vehicle controller Calculation of ；
When the driving distance is more than 5Km, the average power consumption is transmitted
Wherein I is the working current of the pure electric bus, and U is the working voltage of the pure electric bus.
Further, when the travel distance is less than or equal to 5Km, if there is no stored S Average of Average power consumption transmission value AVG Transmitting Is 0.
Further, the average power consumption transmission value AVG from power-up to time T is transmitted at time T Transmit T AVG is transmitted 1 time per interval Δt1 in the T to t+ [ delta ] T period Transmit T The average power consumption value AVG from the power-up to the time T+DeltaT is transmitted at the time T+DeltaT Transmitting T+ [ delta ] T Each time within a period of T+DeltaT starting the next DeltaT1 AVG transmission at intervals of DeltaT 1 Transmitting T+ [ delta ] T 。
As an alternative implementation manner, the driving range assessment is carried out by taking a period as a unit, the high voltage is completed by the vehicle for the nth time as a period starting point, the high voltage is completed by the vehicle for the nth time as a period ending point, the period is an independent period, the electricity consumption unit is Kwh/Km, the calculation period is Deltat, the message transmission period is Deltat 1, and the whole vehicle ON gear power supply is effectively controlled to start transmission;
when the vehicle travel distance is less than or equal to 5Km,
when the vehicle travel distance is greater than 5Km,
further, when the running distance of the vehicle is less than or equal to 5Km, no S is stored in the whole vehicle controller Average of The driving mileage sending value is zero, S Average of Continuously updating the coverage;
transmitting driving range S from power-on to time T Transmit T S is transmitted 1 time per interval Deltat 1 in the period of T to T+ Deltat Transmit T S from power-up to T+DeltaT is transmitted at T+DeltaT Transmitting T+Deltat The AVG is transmitted 1 time per interval Deltat 1 within the period of time of T+Deltat beginning the next Deltat Transmitting T+Deltat 。
The invention provides an economical driving prompt system for a pure electric bus.
An economic driving prompt system of a pure electric bus comprises a whole vehicle controller and an instrument panel communicated with the whole vehicle controller;
the whole vehicle controller is configured to execute the pure electric bus economic driving prompt method of the first aspect, and the instrument panel receives and displays the power meter prompt to be displayed, the instantaneous electricity consumption value, the average electricity consumption value and the driving range evaluation value sent by the whole vehicle controller.
The third aspect of the invention provides a pure electric bus, and the pure electric bus economic driving prompting method is utilized.
The fourth aspect of the invention provides a pure electric bus, which comprises the pure electric bus economic driving prompt system disclosed by the second aspect of the invention.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the pure electric bus economic driving prompting method and system, based on the intelligent algorithm of the pure electric bus power battery management system, the instant electricity consumption and the average electricity consumption value are displayed in real time by the instrument, so that a driver can intuitively and clearly check the electricity consumption condition of the whole electric bus.
2. The method and the system for prompting the economic driving of the pure electric bus are realized based on the calculation of big data of the whole bus controller, and the instrument displays the driving mileage in real time so as to provide visual reference for the subsequent driving mileage evaluation.
3. The method and the system for prompting the economic driving of the pure electric bus are realized based on the cooperation of the vehicle brake pedal and the power algorithm of the driving system, the percentage of the power meter is displayed in real time according to the different-color partition progress bars, and the driving normalization such as stepping on the accelerator and braking of the driver is subjected to real-time visual feedback prompting.
Additional aspects of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
Fig. 1 is a schematic diagram of a message sending cycle provided in embodiment 1 of the present invention.
Fig. 2 is a display effect diagram provided in embodiment 1 of the present invention.
Fig. 3 is a flowchart of the operation provided in embodiment 1 of the present invention.
FIG. 4 is a percentage progress bar of the power meter provided in example 1 of the present invention.
Fig. 5 is a driving range icon provided in embodiment 1 of the present invention.
Detailed Description
The invention will be further described with reference to the drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
Embodiments of the invention and features of the embodiments may be combined with each other without conflict.
Example 1:
as shown in fig. 1, 2 and 3, embodiment 1 of the present invention provides an economical driving prompting method for a pure electric bus, which includes: and the intelligent power meter reminds, instantaneous electricity consumption and average electricity consumption are displayed in real time, and the driving mileage is estimated intelligently.
First, the terms of this embodiment are explained as follows:
in a first aspect, the intelligent power meter reminding technical scheme is as follows:
(1) when the opening degree of the brake pedal exists, the percentage of the power meter is the opening degree of the brake pedal, namely P% =B% (negative value);
(2) when the opening degree of the brake pedal is not available, the percentage of the power meter is the percentage of the power of the driving system, namely, P% = PM;
note that: the brake pedal opening takes precedence.
The power percentage of the driving system is calculated by the whole vehicle controller according to the following formula:
drive system instantaneous power P0 units: KW, taking the message value sent by the driving system controller (neglecting the negative value in calculation and taking only the positive value);
drive system peak power P1 unit: KW, the message value (positive value) sent by the driving system controller is taken.
In the second aspect, the technical scheme for displaying the instantaneous power consumption and the average power consumption in real time is as follows:
(1) Instantaneous power consumption INT
The display units are "Kwh/H" and "Kwh/Km". After high voltage is applied, the whole vehicle controller sends corresponding numerical values, and the instrument displays the numerical values correspondingly;
(1) the INT algorithm with display unit "Kwh/H" is: int=i×u/1000;
(2) the INT algorithm with display unit "Kwh/Km" is:
(2) Average power consumption AVG Transmitting
The power consumption logic calculation is carried out by taking the period as a unit, the upper high voltage of the nth vehicle is finished as a period starting point, the lower high voltage of the nth vehicle is finished as a period ending point, and the interval is an independent period. The average power consumption unit is Kwh/Km, the calculation period is 1min, and the message sending period is 1s. And after the vehicle ON-gear power supply is effective, the vehicle controller starts to transmit.
(1) The whole vehicle controller uses the stored S Average of I.e. AVG Transmitting ＝0.95*S Average of 。
Note that:
a)S average of The algorithm is shown in the following range part;
b) If no S is stored in the whole vehicle controller at the moment Average of (the operation mileage of all power-on cycles in the life cycle is more likely to be less than or equal to 5 Km), the value 0 is sent.
(2) When the driving distance is more than 5Km
The whole vehicle controller calculates the unit of Kwh/Km according to the power consumption and the running mileage of the period, and the calculation method is as follows:
AVG transmitting ＝0.95*AVG Calculation of
Note that:
a) The power consumption logic calculation period (namely a complete power-on and power-off period) is adopted, and the power consumption value and the accumulated mileage value in the period are calculated by the whole vehicle controller;
b) The calculation period is 1min, and the message sending period is 1s (as shown in fig. 1: for example, transmitting average power consumption value AVG from power-up to time T Transmit T AVG is transmitted 1 time per second in a period of T to t+1min Transmit T The method comprises the steps of carrying out a first treatment on the surface of the Transmitting average power consumption value AVG from power-up to time T+1min at time T+1min Send T+1min AVG is transmitted 1 time per second within the next 1min period starting at t+1min Send T+1min )。
In a third aspect, the following technical solution is provided for intelligent evaluation of driving range:
(1) the vehicle driving distance is less than or equal to 5Km, and the calculation method comprises the following steps:
note that: if no S is stored in the whole vehicle controller at the moment Average of (the operation mileage of all power-on cycles in the life cycle is more likely to be less than or equal to 5 Km), the driving mileage is sent to 0.
(2) The vehicle driving distance is more than 5Km, and the VCU calculating method comprises the following steps:
note that:
a) The calculation period of the driving mileage is 5min, and the message sending period is 1s. The specific transmission mode is the same as the AVG above Transmitting ；
b)S Average of AVG used for last calculation of driving range of whole vehicle controller Calculation of And stored (continuous overlay update).
Specifically, examples are as follows:
in a first aspect, the intelligent power meter alert display scheme is as follows:
the meter does not display "drive system instantaneous power" and "display remaining power" specific values, but displays the power meter percentages in the form of a progress bar, as shown in fig. 4.
(1) Color division of progress bars:
green area (-25% less than or equal to 30% of power percentage less than or equal to 70% of power percentage), yellow area (30% less than or equal to 70% of power percentage less than or equal to-100% less than or equal to-25% of power percentage, < -25%) and red area (70% less than or equal to 100% of power percentage);
(2) The real-time display resolution of the progress bar is divided according to the percentage average in the area, each scale cell represents 10% of display, and the actual progress bar display precision is 1% (namely, each scale cell is divided into 10 invisible cells to be displayed in real time);
green areas (-25% is less than or equal to 30% of power percentage) display 5.5 scale grids in total;
yellow area (30% < power percentage less than or equal to 70%), totally displaying 4 scale grids;
yellow area (-100% is less than or equal to power percentage < -25%), and total 7.5 scale grids are displayed;
red area (70% < power percentage less than or equal to 100%), totally displaying 3 scale grids;
(3) 0-100%, wherein-100% -0 are two independent areas, and positive and negative are not displayed at the same time; when the power percentage value covers two or more color areas simultaneously, the covered area percentage progress bars are displayed simultaneously.
Examples:
when the power percentage=20%, only a forward green area is displayed, and the other area progress bars are not displayed;
when the power percentage=50%, the forward green area and the forward yellow partial area are displayed simultaneously;
when the power percentage=80%, the forward green area, the forward yellow area, and the forward yellow partial area are simultaneously displayed;
and vice versa.
In the second aspect, the real-time display scheme of the instantaneous power consumption and the average power consumption is as follows:
the instantaneous power consumption and the average power consumption of the instrument are displayed when the vehicle is in an ON gear state. The electricity consumption display is divided into an instant electricity consumption and an average electricity consumption, and the control logic is described below.
Instantaneous electricity consumption
The icon is "INT", and the display unit is "Kwh/H" and "Kwh/Km";
when the vehicle speed is less than or equal to 5Km/H, the display unit is Kwh/H; when the vehicle speed is more than 5Km/H, the display unit at the same position is 'Kwh/Km', and the corresponding message is read.
Average power consumption
The icon is AVG, the display unit is Kwh/Km, the message sending period is 1S, and the calculation period is 60S.
In a third aspect, the following is a range intelligent evaluation display scheme:
the meter displays a "range" icon, as shown in FIG. 5, in Km, with a resolution of 0.1Km. The whole vehicle controller calculates according to the formula, and sends the value to the combination instrument for display in a message form through a CAN communication protocol, wherein the period is 1s. After the power supply of the ON gear of the whole vehicle is valid, the VCU starts to send a first frame of driving mileage information.
Example 2:
the embodiment 2 of the invention provides an economic driving prompt system of a pure electric bus, which comprises a whole bus controller and an instrument panel communicated with the whole bus controller;
the whole vehicle controller is configured to execute the method for prompting the economic driving of the pure electric bus described in the embodiment 1, and the instrument panel receives and displays the power meter prompt to be displayed, the instantaneous electricity consumption value, the average electricity consumption value and the driving range evaluation value sent by the whole vehicle controller.
Example 3:
the embodiment 3 of the invention provides a pure electric bus, and the pure electric bus economic driving prompting method disclosed by the embodiment 1 of the invention is utilized.
Example 4:
the embodiment 4 of the invention provides a pure electric bus, which comprises the pure electric bus economic driving prompt system described in the embodiment 2 of the invention.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Those skilled in the art will appreciate that implementing all or part of the above-described methods in accordance with the embodiments may be accomplished by way of a computer program stored on a computer readable storage medium, which when executed may comprise the steps of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), or the like.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A pure electric bus economic driving prompting method is characterized in that:
the method comprises the following steps:
acquiring operation parameter data of a pure electric bus;
generating a power meter reminder, an instantaneous electricity consumption value, an average electricity consumption value and a driving range evaluation value according to the acquired parameter data, and displaying the power meter reminder, the instantaneous electricity consumption value, the average electricity consumption value and the driving range evaluation value on an instrument panel;
wherein, the power meter is reminded and is included:
when the opening of the brake pedal exists, the percentage of the power meter is the opening of the brake pedal; when the opening degree of the brake pedal is not available, the percentage of the power meter is the percentage of the power of the driving system; the power meter prompt is displayed in the form of a progress bar, and different colors represent different power percentage partitions;
wherein PM% is the power percentage, P0 is the instantaneous power of the driving system, and P1 is the peak power of the driving system;
the instantaneous electricity consumption at the display unit of Kwh/H is: int=i×u/1000;
the instantaneous electricity consumption at display unit Kwh/Km is:
wherein I is the working current of the pure electric bus, and U is the working voltage of the pure electric bus;
the average power consumption logic calculation is carried out by taking a period as a unit, the upper high voltage of the nth vehicle is completed as a period starting point, the lower high voltage of the nth vehicle is completed as a period end point, the period is an independent period, the power consumption unit is Kwh/Km, the calculation period is delta T, the message transmission period is delta T1, and the whole vehicle ON gear power supply is effectively controlled to start transmission;
when the travel distance is less than or equal to 5Km, the average power consumption transmission value AVG Transmitting ＝0.95*S Average of ，S Average of AVG used for last calculation of driving range of whole vehicle controller Calculation of ；
When the driving distance is more than 5Km, the average power consumption is transmitted
Wherein I is the working current of the pure electric bus, and U is the working voltage of the pure electric bus;
when the driving distance is less than or equal to 5Km, if there is no stored S Average of Average power consumption transmissionValue AVG Transmitting Is 0;
transmitting average power consumption transmission value AVG from power-up to time T Transmit T AVG is transmitted 1 time per interval Δt1 in the T to t+ [ delta ] T period Transmit T The average power consumption value AVG from the power-up to the time T+DeltaT is transmitted at the time T+DeltaT Transmitting T+ [ delta ] T The AVG is transmitted 1 time per interval DeltaT 1 in the period of T+DeltaT beginning the next DeltaT Transmitting T+ [ delta ] T 。
2. The method for prompting economic driving of a pure electric bus according to claim 1, wherein:
the driving mileage evaluation is carried out by taking a period as a unit, the upper high voltage of the nth vehicle is completed as a period starting point, the lower high voltage of the nth vehicle is completed as a period end point, the period is an independent period, the electricity consumption unit is Kwh/Km, the calculation period is Deltat, the message transmission period is Deltat 1, and the whole vehicle ON gear power supply is effectively controlled to start transmission;
when the driving distance of the vehicle is less than or equal to 5Km, the driving mileage is continued
When the driving distance of the vehicle is greater than 5Km, the driving mileage is increased
3. The method for prompting economic driving of a pure electric bus according to claim 2, wherein:
when the running distance of the vehicle is less than or equal to 5Km, the whole vehicle controller has no stored S Average of The driving mileage sending value is zero, S Average of Continuously updating the coverage;
transmitting driving range S from power-on to time T Transmit T S is transmitted 1 time per interval Deltat 1 in the period of T to T+ Deltat Transmit T S from power-up to T+DeltaT is transmitted at T+DeltaT Transmitting T+Deltat The AVG is transmitted 1 time per interval Deltat 1 within the period of time of T+Deltat beginning the next Deltat Transmitting T+Deltat 。
4. An economic driving prompt system of a pure electric bus is characterized in that:
the system comprises a whole vehicle controller and an instrument panel communicated with the whole vehicle controller;
the vehicle controller is configured to execute the pure electric bus economic driving prompt method according to any one of claims 1-3, and the instrument panel receives and displays the power meter prompt to be displayed, the instantaneous electricity consumption value, the average electricity consumption value and the driving range evaluation value sent by the vehicle controller.
5. The utility model provides a pure [ electric ] motor coach which characterized in that:
an economical driving prompt method for a pure electric bus according to any one of claims 1-3;
or,
comprising the pure electric bus economic driving prompt system as set forth in claim 4.
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| PCT/CN2022/110060 WO2023245825A1 (en) | 2022-06-24 | 2022-08-03 | Economical driving prompting method and system for pure electric bus |
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| KR20200132430A (en) * | 2019-05-17 | 2020-11-25 | 현대자동차주식회사 | Method and system for accelerator pedal guidance of electric vehicle |
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| CN113910912A (en) * | 2021-11-16 | 2022-01-11 | 重庆金康赛力斯新能源汽车设计院有限公司 | Display method of power of electric automobile and vehicle-mounted electronic equipment |
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- 2022-06-24 CN CN202210725182.3A patent/CN115042629B/en active Active
- 2022-08-03 WO PCT/CN2022/110060 patent/WO2023245825A1/en unknown
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| JP2014026387A (en) * | 2012-07-25 | 2014-02-06 | Toshiba Corp | Electronic apparatus and power consumption display method |
| CN114475257A (en) * | 2022-01-25 | 2022-05-13 | 中通客车股份有限公司 | Method and system for calculating driving range of pure electric bus |
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| Publication number | Publication date |
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| CN115042629A (en) | 2022-09-13 |
| WO2023245825A1 (en) | 2023-12-28 |
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