CN110696615B - Method and system for displaying power meter of hybrid electric vehicle - Google Patents
Method and system for displaying power meter of hybrid electric vehicle Download PDFInfo
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Abstract
The invention provides a method and a system for displaying a power meter of a hybrid electric vehicle, and belongs to the technical field of hybrid electric vehicles. The method solves the problem that the running state of the hybrid electric vehicle is difficult to reasonably display in the prior art. A method for displaying a power meter of a hybrid electric vehicle comprises the following steps: calculating the percentage of the current required power in the sum of the current real-time available power of the motor and the real-time available power of the engine and displaying the percentage in a power meter; and calculating the percentage of the maximum working power of the current motor when the current motor is driven independently to the sum of the current real-time available power of the motor and the real-time available power of the engine, and displaying the percentage in a power meter. A power meter display system of a hybrid electric vehicle comprises a vehicle control unit, a motor controller, an engine controller and an instrument controller, wherein the motor controller and the engine controller are respectively connected with the vehicle control unit, and the instrument controller is connected with the output end of the vehicle control unit. The invention can reasonably display the running state of the hybrid vehicle and prompt a driver to reasonably operate the vehicle.
Description
Technical Field
The invention belongs to the technical field of hybrid vehicles, and relates to a method and a system for displaying a power meter of a hybrid vehicle.
Background
The power system of the hybrid electric vehicle consists of a plurality of power sources, and the driving mode comprises pure electric driving, namely a vehicle driven by motor power consumption alone, pure oil driving, namely a vehicle driven by engine power consumption alone, and hybrid driving, namely a vehicle driven by the motor and the engine working simultaneously.
Compared with the traditional fuel vehicle, the hybrid electric vehicle has the advantages of good dynamic property, quick response and long working time of the fuel engine, has the advantages of no pollution and low noise of the motor, and achieves the optimal matching of the engine and the motor. Therefore, more and more people are selected to select the hybrid electric vehicle as the primary choice for self traveling.
The display of the vehicle running state is an essential link on the vehicle, and a driver needs to perform related driving operations such as acceleration, deceleration, refueling, charging, fuel-saving driving and the like through the display of the vehicle running state. Because a traditional fuel vehicle is driven by a single driving source, a speedometer or an engine tachometer is usually used as a main display meter for selecting a combination meter, and a hybrid vehicle has multiple driving modes, so that the engine tachometer cannot be used as the main display meter, and the information display requirement cannot be met, and therefore, a power meter is usually used as the main display meter for displaying the existing hybrid vehicle meter.
The conventional hybrid vehicle power meter display method is, as shown in a hybrid vehicle display device of chinese patent application No. CN201610589964.3, in which a display processing unit calculates power output ratios of respective modes and outputs a display command to a display unit, the display unit receives the display command and displays the display command in a display screen, the display screen displays a first graphic and a second graphic, the first graphic and the second graphic are concentric circles, and a circumference of the second graphic is divided into regions corresponding to respective driving modes of a plurality of driving modes, wherein the first graphic displays a fuel mileage by a change in filled highlight region ratio, and the second graphic includes a remaining power amount display section, an energy recovery section, and a power output section of a power storage device, wherein the power output section includes an electric power driving section, an electric power output section, and a power output section, The system comprises an engine driving section and a dual-drive mode driving section, wherein the power output section adopts scales of 0-100, the 0-30 section displays electric driving information, the 30-100 section displays the engine driving information, the 0-100 extension section displays the dual-drive mode driving information, the electric driving information is provided with the ratio of pure electric actual output power to pure electric working condition maximum output power for display, the engine driving information is displayed according to the ratio of pure oil actual output power to pure oil working condition maximum output power, and the dual-drive mode driving information is displayed according to the ratio of dual-drive mode actual output power to drive mode maximum output power.
Although the display device for the hybrid electric vehicle is divided into a plurality of display sections to display the driving states of the hybrid electric vehicles, the display effect is improved to a certain extent, a driver does not know when pure electric drive is converted into engine drive or parallel drive, and the vehicle is more oil-saving in a pure electric mode, so that the display device for the hybrid electric vehicle is difficult to prompt the driver to enable the vehicle to be in the pure electric mode as much as possible, and the display device for the hybrid electric vehicle is difficult to play a role in guiding the driver to reasonably operate the vehicle and improving the economy. Meanwhile, after the power output section is divided into a plurality of sections, each section respectively represents different drives, and scales of other sections are not related when one section is adopted, but all display sections in the power output section are connected in series and are close to each other, so that a driver can easily count scales of other sections when one section is indicated, and the driver can easily understand the driving capability state of the current vehicle, and the driver can operate the vehicle by mistake. Therefore, in the prior art, the running state of the hybrid electric vehicle is difficult to reasonably display, and then the driver is difficult to be prompted to reasonably operate the vehicle.
Disclosure of Invention
The invention provides a method and a system for displaying a power meter of a hybrid electric vehicle, aiming at the problems in the prior art, and the method and the system solve the technical problem of how to reasonably display the running state of the hybrid electric vehicle and prompt a driver to reasonably operate the vehicle.
The invention is realized by the following technical scheme: a method for displaying a power meter of a hybrid electric vehicle comprises the following steps:
vehicle drive display: obtaining the required power of a driver after a vehicle is started, obtaining the real-time available power of a motor and the real-time available power of an engine, calculating the sum of the current real-time available power of the motor and the real-time available power of the engine, calculating the percentage of the current required power in the sum of the current real-time available power of the motor and the real-time available power of the engine, and displaying the calculated percentage in a power meter;
calculating and displaying an engine start-stop zone bit: the method comprises the steps of obtaining the maximum working power of the current motor during independent driving according to the current real-time available power of the motor and the power which can be maximally distributed to the motor by the current vehicle control unit, calculating the percentage of the maximum working power of the current motor during independent driving to the sum of the current real-time available power of the motor and the real-time available power of an engine, using the percentage as an engine start-stop flag bit, and displaying the percentage in a power meter.
The vehicle driving display in the method for displaying the power meter of the hybrid electric vehicle adopts the percentage of the required power of the current driver to the sum of the real-time available power of the motor and the real-time available power of the engine to display, thereby adopting a standard to display in the driving mode, knowing the proportion of the current power output to the total power of the current driving system (the sum of the real-time available power of the motor and the real-time available power of the engine is the total power of the current driving system) according to the percentage regardless of pure motor driving, pure engine driving or parallel driving of the motor and the engine, thereby being capable of knowing the driving power of the current vehicle according to the current proportion, avoiding the situation that the driver understands the driving power of the current operating vehicle by the different proportions and is close together in each display section in the power output section, thereby causing the driver to operate the vehicle by mistake, and the ratio represents the ratio of the required power of the driver to the total capability of the current driving system, so that the driver can more easily understand the required driving power, and the reasonable display can be performed in the mode so that the driver can more reasonably operate the vehicle. And meanwhile, an engine starting and stopping zone bit is displayed, when the percentage of the current required power to the sum of the current motor real-time available power and the current engine real-time available power is greater than the percentage corresponding to the engine starting and stopping zone bit, the engine is started, otherwise, the engine is closed, and the engine starting and stopping zone bit is set so that a driver can clearly know when the engine is started, so that the driver can be guided to not start the engine as much as possible, the vehicle is driven by the motor as much as possible, namely, electrically driven, the vehicle is low in oil consumption and good in economical efficiency when running electrically, and the environment can be protected.
In the method for displaying the power meter of the hybrid electric vehicle, the motor operation identifier is lightened in a display interface of the power meter when the motor works to drive the vehicle; an engine operation indicator is illuminated in the power meter display interface while the vehicle is being driven by the engine operation. Whether the current engine is driven to work and the motor is driven to work is visually displayed through the operation, and a driver can know the driving state of the current vehicle according to the corresponding identification, so that the driver can drive the vehicle better and more reasonably.
In the method for displaying the power meter of the hybrid electric vehicle, in the calculation and display of the engine start-stop zone bit, the real-time available power of the current motor is compared with the maximum power which can be distributed to the motor by the current vehicle control unit, and a smaller object is selected as the maximum working power when the current motor is driven independently. The current real-time available power of the motor is the maximum output capacity of the current motor, the current vehicle control unit can maximally distribute the power to the motor, namely, the power which is output by the power battery to electric equipment such as an air conditioner, a DCDC converter and the like and the power which is reserved by the power battery are eliminated, the power battery can provide the maximum power for the motor to work, and the power is distributed to the motor by the vehicle control unit. The current real-time available power of the motor and the maximum power which can be distributed to the motor by the current vehicle control unit are mutually limited, and the selected smaller value is the maximum working power when the current motor is driven independently.
In the method for displaying the power meter of the hybrid electric vehicle, the display interface of the power meter comprises 0% to 100% of driving power scales, a pointer is arranged in the display interface of the power meter, and the pointer points to the corresponding scales in the driving power scales according to the percentage of the current required power to the sum of the current real-time available power of the motor and the real-time available power of the engine. Thereby through the position of above-mentioned setting through the pointer just can directly perceivedly understand the proportion of driver demand power when operating the vehicle at present, the timely effectual operation vehicle of driver of being convenient for traveles.
In the method for displaying the power meter of the hybrid electric vehicle, in the calculation and display of the engine start-stop mark position, the percentage corresponding to the calculated engine start-stop mark position is indicated on the scale corresponding to the percentage in the driving power scale by the set indication mark, the left side of the indication mark is provided with the motor operation mark, the right side of the indication mark is provided with the engine operation mark, and the motor operation mark and the engine operation mark synchronously move along with the movement of the indication mark. Through the operation, a driver can know when the engine is started according to the indication mark corresponding to the engine start-stop zone bit, and the engine start-stop zone bit is obtained through real-time calculation and accords with the actual working condition that the engine is changed during starting and stopping of the vehicle, so that the start-stop position of the engine of the driver can be accurately prompted in real time. Meanwhile, the motor operation mark is arranged on the left side, the engine operation mark is arranged on the right side, the motor operation can be accurately prompted to the driver when the pointer reaches the side of the motor operation mark, and the engine can be started when the pointer reaches the side of the engine operation mark, so that the display is reasonable, and the driver can know how to reasonably select the own driving operation without much thought.
In the method for displaying the power meter of the hybrid electric vehicle, a displayed maximum percentage value is set in the calculation and display of the engine start-stop flag bit, when the percentage of the maximum output power of the current motor when the motor is driven independently, which accounts for the sum of the real-time available power of the current motor and the real-time available power of the engine, is calculated to be larger than the displayed maximum percentage value, the displayed maximum percentage value is taken as the percentage value corresponding to the engine start-stop flag bit, and the selected range of the displayed maximum percentage value is 0-50% of the driving power scale. Through the operation, the problem that the calculated maximum output power of the motor when the motor is driven independently accounts for the sum of the current real-time available power of the motor and the real-time available power of the engine due to error calculation is infinite in percentage, so that an indication mark corresponding to an engine starting and stopping marker bit far exceeds an indication upper limit, and therefore the instrument is damaged is solved.
In the above method for displaying the power meter of the hybrid electric vehicle, the display interface of the power meter includes-100% to 0% of the energy recovery scale, the energy recovery scale and the driving power scale share 0% of the scale, and the pointer indicates the percentage of the energy recovery power when the pointer is within the energy recovery scale interval, where the percentage is the ratio of the current energy recovery power to the current maximum allowable recovery power. The vehicle not only includes the power take off drive section when driving, also can have the operating mode that ability of sliding retrieved or braking ability retrieved, through above-mentioned operation, point to the energy recuperation scale when the vehicle is in energy recuperation to the power of going condition of vehicle is shown more comprehensively, and the driver of also being convenient for knows the size of current ability retrieval, makes the driver make reasonable driving operation.
A power meter display system of a hybrid electric vehicle comprises a vehicle control unit, a motor controller, an engine controller and an instrument controller, wherein the vehicle control unit can obtain the required power of a driver and calculate the maximum power which can be distributed to a motor, the motor controller is used for sending the real-time available power of the motor, the engine controller is used for sending the real-time available power of the engine, the instrument controller is used for receiving information sent by the vehicle control unit to perform power meter display control, the power meter display system is characterized in that the motor controller and the engine controller are respectively connected with the vehicle control unit, the instrument controller is connected with the output end of the vehicle control unit, the vehicle control unit calculates the percentage of the current required power in the sum of the current real-time available power of the motor and the real-time available power of the engine and controls the power meter to display the percentage, and the vehicle control unit obtains the maximum working power when the current motor is driven independently And calculating the percentage of the maximum working power of the current motor when the current motor is driven independently to the sum of the current real-time available power of the motor and the real-time available power of the engine, and controlling the power meter to display the percentage through an instrument controller, wherein the percentage is used as an engine start-stop zone bit.
The vehicle control unit in the hybrid electric vehicle power meter display respectively obtains information sent by the motor controller and the engine controller to obtain real-time available power of the motor and real-time available power of the engine, and simultaneously obtains required power of a driver, the vehicle control unit controls the power meter to display the percentage of the required power of the driver to the sum of the real-time available power of the motor and the real-time available power of the engine, so that a standard is adopted for display in a driving mode, and the proportion of the current power output to the total power of a current driving system (the sum of the real-time available power of the motor and the real-time available power of the engine is the total power of the current driving system) is known according to the percentage regardless of pure motor driving or pure engine driving or parallel driving of the motor and the engine, so that the driver can know the current driving condition according to the current proportion, the situation that the driver mistakenly operates the vehicle cannot occur because the display sections in the power output section show different proportions and are close to each other, so that the driver understands the driving power of the vehicle which is operated mistakenly currently, and the proportion shows the ratio of the required power of the driver to the total capacity of the current driving system, so that the driver can easily understand the required driving power, and the reasonable display can be performed in the mode, so that the driver can conveniently and reasonably operate the vehicle. Meanwhile, the percentage of the maximum working power of the current motor when the current motor is driven independently to the sum of the current real-time available power of the motor and the real-time available power of the engine is used as an engine start-stop flag bit for displaying, when the percentage of the current required power to the sum of the current real-time available power of the motor and the real-time available power of the engine is larger than the percentage corresponding to the start-stop flag bit of the engine, the engine is started, otherwise, the engine is closed, the setting of the engine start-stop flag bit enables the driver to know clearly when the engine is started, thereby guiding the driver not to start the engine as much as possible, and enabling the vehicle to adopt motor drive as much as possible during running, namely pure electric drive, the system has the advantages of low vehicle oil consumption and good economical efficiency during pure electric driving, and can protect the environment, so that the system can guide a driver to operate the vehicle more reasonably, so that the vehicle is more economical and environment-friendly to drive.
In the display system of the hybrid electric vehicle power meter, a display interface of the power meter comprises a pointer, an inner ring, an outer ring and an indication mark of an engine start-stop mark position, 0% to 100% of driving power scales are arranged between the outer ring and the inner ring, a mark ring is arranged on the inner side of the inner ring, two ends of the pointer are respectively connected with the outer ring and the mark ring, the pointer can move along the outer ring and the mark ring and can point to any scale in the 0% to 100% of scales, the indication mark is positioned on the outer side of the outer ring and can point to any scale in the 0% to 100% of scales, a motor operation mark which is lightened when the motor works to drive the vehicle and an engine operation mark which is lightened when the engine works to drive the vehicle are arranged between the outer ring and the inner ring, the motor operation mark is positioned on the left side of the indication mark, and the engine operation mark is positioned on the right side of the, the motor operation mark and the engine operation mark can move along with the indicating mark. Thereby can make power meter display interface rationally show current drive state and engine start and stop the marker bit through above-mentioned setting, make the driver can directly perceivedly know the holistic drive state of vehicle through power meter display interface, the driver of being convenient for rationally operates the vehicle.
In the above-mentioned power meter display system of the hybrid electric vehicle, the vehicle control unit can obtain the energy recovery power of the current vehicle, the vehicle control unit is connected with a battery manager, the vehicle control unit obtains the current maximum allowable recovery power of the vehicle according to the maximum power generated by the motor sent by the motor controller and the maximum charging power of the power battery sent by the battery manager, the vehicle control unit calculates the ratio of the current energy recovery power to the current maximum allowable recovery power to obtain the current capacity recovery power percentage and controls a power meter display interface to display the current capacity recovery power percentage, the display interface of the power meter also comprises-100% to 0% of energy recovery scales arranged between the outer ring and the inner ring, the energy recovery scales and the driving power scales share 0% of scales, and the pointer indicates the percentage of energy recovery power when in an energy recovery scale interval. The vehicle not only includes the power take off drive section when driving, also can have the operating mode that ability of sliding retrieved or braking ability retrieved, through above-mentioned operation, point to the energy recuperation scale when the vehicle is in energy recuperation to the power of going condition of vehicle is shown more comprehensively, and the driver of also being convenient for knows the size of current ability retrieval, makes the driver make reasonable driving operation.
Compared with the prior art, the method and the system for displaying the power meter of the hybrid electric vehicle have the following advantages:
1. the driving mode of the invention adopts a standard to display, and according to the proportion of the current power output to the total capability of the current driving system, the driver can know the current driving condition, and the condition that the driver mistakenly operates the vehicle because the driver understands the driving power of the vehicle which is operated mistakenly at present can not occur, so that the reasonable display can be carried out, and the driver can conveniently and reasonably operate the vehicle.
2. The power meter displays the engine start-stop flag bit, and the driver can clearly know when the engine is started by setting the engine start-stop flag bit, so that the driver can be guided not to start the engine as much as possible, the vehicle is driven by the motor as much as possible during running, namely, the vehicle is driven by pure electricity, the vehicle is low in oil consumption and good in economical efficiency during pure electricity running, the environment can be protected, and the driver can be guided to operate the vehicle more reasonably so that the vehicle runs more economically and more environmentally.
Drawings
Fig. 1 is a power meter display interface according to an embodiment of the invention.
Fig. 2 is a schematic main flow chart of a method according to a first embodiment of the present invention.
Fig. 3 is a schematic diagram of a system connection structure according to an embodiment of the present invention.
In the figure, 1, a vehicle control unit; 2. a motor controller; 3. an engine controller; 4. a meter; 5. an instrument controller; 6. a pointer; 7. an inner ring; 8. an outer ring; 9. an indication mark; 10. driving the power scale; 11. a motor operation identifier; 12. an engine operation identifier; 13. energy recovery scales; 14. a marker ring; 15. a battery manager; 16. and an electric quantity display section.
Detailed Description
The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described with reference to the drawings, but the present invention is not limited to these embodiments.
The first embodiment is as follows:
as shown in fig. 1 and fig. 2, a method for displaying a power meter of a hybrid electric vehicle includes the following steps:
vehicle drive display: the method comprises the steps of obtaining required power of a driver after a vehicle is started, obtaining real-time available power of a motor and real-time available power of an engine, calculating the sum of the current real-time available power of the motor and the real-time available power of the engine, calculating the percentage of the current required power in the sum of the current real-time available power of the motor and the real-time available power of the engine, and displaying the calculated percentage in a power meter. The current demand power accounts for the percentage of the sum of the current real-time available power of the motor and the real-time available power of the engine, namely the current demand power is divided by the sum of the current real-time available power of the motor and the real-time available power of the engine.
The power meter is used as a display main meter of the meter 4, and the running power condition of the vehicle is known through the power meter. The real-time available power of the motor is the real-time self maximum output capacity of the motor, namely the real-time maximum energy output power of the motor, and the real-time available power of the engine is the real-time self maximum output capacity of the engine, namely the real-time maximum energy output power of the engine. The calculation and acquisition of the real-time available power of the motor, the real-time available power of the engine and the power demanded by the driver are all the prior art.
When the motor works to drive the vehicle, the motor operation identifier 11 is lightened in a display interface of the power meter; the engine operation indicator 12 is illuminated in the power meter display interface while the vehicle is being driven by engine operation. Whether the current engine is driven to work and the motor is driven to work is visually displayed through the operation, and a driver can know the driving state of the current vehicle according to the corresponding identification, so that the driver can drive the vehicle better and more reasonably.
The display interface of the power meter comprises a driving power scale 10 of 0% to 100% (101 scales in the section of the driving power scale 10 indicated in fig. 1 represent 0 to 100%, and increase clockwise from the 0 scale by 1%, namely 0, 1%, 2%. 98%, 99%, 100%. the position of 0% is marked by "READY" in fig. 1), and the pointer 6 points to the corresponding scale by the percentage of the current required power to the sum of the current real-time available power of the motor and the real-time available power of the engine. If the current percentage is 40% then the pointer 6 points to the 40% scale. The proportion of the power required by the driver when the vehicle is operated at present can be intuitively known through the position of the pointer 6, so that the driver can timely and effectively operate the vehicle to run. The pointer 6 can indicate 100% of scale at the maximum, namely the scale of 100% is indicated when the percentage of the current required power to the sum of the current real-time available power of the motor and the real-time available power of the engine exceeds 100%, so that the problem that the pointer 6 far exceeds the indication upper limit to damage the instrument 4 due to the fact that the percentage of the calculated current required power to the sum of the current real-time available power of the motor and the real-time available power of the engine is infinite caused by wrong data calculation of the sum of the current real-time available power of the motor and the real-time available power of the engine.
The motor operation mark 11 and the engine operation mark 12 may be set manually, and may be characters or figures, such as circles, triangles, and the like, a lightning pattern mark is used in this embodiment of the motor operation mark 11, and an oil drop pattern mark is used in this embodiment of the engine operation mark 12. Lightening a lightning graphic identifier in a display interface of the power meter when the motor works to drive the vehicle, otherwise, turning the lightning graphic identifier to be gray; when the engine works to drive the vehicle, the oil drop pattern mark is lightened, and conversely, the oil drop pattern mark is grayed. When the vehicle is started, the gear is in the D gear or the R gear, and the motor torque is larger than a certain value, the motor works to drive the vehicle, the lightning graphic mark is lightened, the certain value can be set manually, and the certain value is preferably 3Nm (Nm). When the engine running is met and the torque is larger than a certain value, the engine is indicated to work to drive the vehicle, the oil drop graphic identification is lightened, the fixed value can be set manually, and the fixed value is preferably 2Nm (Nm).
When the vehicle is started and is not in an idle state, the gear is in a D gear or an R gear, the engine is started, the engine torque is greater than 2Nm, the motor torque is greater than 3Nm, and the accelerator opening is greater than 2%, the oil drop graphical identification and the lightning graphical identification are simultaneously lightened. The oil drop graphic mark and the lightning graphic mark are lighted together to indicate that the power of the motor and the engine drives the vehicle to work. As another scheme, the lightning graphical identification is lightened when the motor torque is more than 3Nm, and the oil drop graphical identification is lightened when the engine torque is more than 2 Nm. The acquisition of a vehicle starting state, a vehicle non-idle state, an engine starting state, a gear, a motor torque, an engine torque and an accelerator opening degree is the prior art. The motor torque and the engine torque are distributed by the hybrid control unit 1, which is also known in the art.
Calculating and displaying an engine start-stop zone bit: the method comprises the steps of obtaining the maximum working power of the current motor during independent driving according to the current real-time available power of the motor and the power which can be maximally distributed to the motor by the current vehicle control unit 1, calculating the percentage of the maximum working power of the current motor during independent driving to the sum of the current real-time available power of the motor and the real-time available power of an engine, using the percentage as an engine start-stop flag bit, and displaying the percentage in a power meter. The maximum working power of the current motor when the current motor is driven independently accounts for the percentage of the sum of the current real-time available power of the motor and the real-time available power of the engine, namely the maximum working power of the current motor when the current motor is driven independently is divided by the sum of the current real-time available power of the motor and the real-time available power of the engine. And comparing the current real-time available power of the motor with the current maximum power which can be distributed to the motor by the vehicle control unit 1, and selecting a smaller object as the current maximum working power when the motor is driven independently. At present, the vehicle control unit 1 can allocate the maximum power to the motor, that is, the maximum power that the power battery can supply to the motor after eliminating the power consumption power that the power battery outputs to the air conditioner, the DCDC converter and other electric devices and the power reserved by the power battery, and the power is allocated to the motor by the vehicle control unit 1. The calculation of the maximum power that can be allocated to the electric machine of the vehicle control unit 1 is known from the prior art. The current real-time available power of the motor and the current maximum power which can be distributed to the motor by the vehicle control unit 1 are mutually limited, and a smaller value is selected to be the maximum working power when the current motor is driven independently.
The calculated percentage corresponding to the engine start-stop flag bit is indicated on the scale corresponding to the percentage in the 0% -100% driving power scale 10 by the set indication mark 9, the left side of the indication mark 9 is provided with a motor operation mark 11, the right side of the indication mark 9 is provided with an engine operation mark 12, and the motor operation mark 11 and the engine operation mark 12 both synchronously move along with the movement of the indication mark 9. If the percentage corresponding to the engine start-stop flag bit is 50%, the indication mark 9 indicates a scale of 50% in the driving power scale 10. When the scale indicated by the pointer 6 exceeds the scale indicated by the indication mark 9, the vehicle controller 1 controls the engine to start and drive the vehicle, at this time, the motor and the engine drive the vehicle together, and the engine drives the vehicle independently, and the specific motor is indicated by the motor indication mark 9 when participating in work. When the scale indicated by the pointer 6 does not exceed and is between the scale of 0% and the scale corresponding to the percentage corresponding to the engine start-stop mark position, it indicates that the vehicle controller 1 controls the motor to drive the vehicle independently. Through the operation, a driver can know when the engine is started according to the indication mark 9 corresponding to the engine start-stop zone bit, and the engine start-stop zone bit is obtained through real-time calculation and accords with the actual working condition that the engine is changed during starting and stopping of the vehicle, so that the start-stop position of the engine of the driver can be accurately prompted in real time. Meanwhile, the motor operation mark 11 is arranged on the left side, the engine operation mark 12 is arranged on the right side, the motor operation can be accurately prompted to the driver when the pointer 6 reaches the side of the motor operation mark 11, and the engine can be started when the pointer 6 reaches the side of the engine operation mark 12, so that the display is reasonable, and the driver can know how to reasonably select the driving operation without much thought. The indication mark 9 may be a graphic or a character, and a triangle, a circle, a diamond, etc. may be selected when selecting the graphic, as can be seen from fig. 1, in this embodiment, the triangle is used as the mark only, and a corner of the triangle indicates the scale. Indicator 9 still is connected with the extension line, and indicator 9 is connected to extension line one end, and the other end is located one side of 0% scale, instructs 0% scale.
When the percentage of the maximum output power of the motor which is driven independently to the sum of the real-time available power of the motor and the real-time available power of the engine is calculated to be larger than the maximum percentage value, the maximum percentage value is taken as the percentage value corresponding to the engine start-stop mark position, the maximum percentage value is selected to be 0% -50% of the driving power scale 10, and the maximum percentage value is preferably displayed to be 50%. Through the operation, the problem that the calculated maximum output power of the motor when the motor is driven independently accounts for the sum of the current real-time available power of the motor and the real-time available power of the engine due to error calculation is infinite in percentage, so that the indication mark 9 corresponding to the engine start-stop marker bit far exceeds the indication upper limit, and the instrument 4 is damaged is solved.
When the vehicle is driven, the vehicle not only comprises a power output driving section, but also has the working condition of sliding capacity recovery or braking capacity recovery. Therefore, the power meter display interface comprises an energy recovery scale 13 of-100% to 0%, the energy recovery scale 13 shares a scale at 0% with the driving power scale 10 (in fig. 1, 101 scales in the energy recovery scale 13 represent-100% to 0%, and the counterclockwise increase from the 0 scale is increased by 1% each time, namely 0, -1%, -2% > -98%, -99%, -100% > "- (minus sign)" represents a direction only), and the pointer 6 indicates the energy recovery power percentage when in the energy recovery scale 13 interval, wherein the percentage is the ratio of the current energy recovery power to the current maximum allowable recovery power. If the ratio of the current energy recovery power to the current maximum allowed recovery power is 40%, the pointer 6 is pointed on the-40% scale. When the vehicle is started, the gear is in a D gear or an R gear, the vehicle speed is in a set interval, the accelerator opening is in a set interval, the wheel end required torque is a negative value, and the actual torque of the motor is a negative value, the vehicle enters a capacity recovery state, the pointer 6 does not indicate in the vehicle driving scale at the moment, and the pointer 6 moves in the energy recovery scale 13. The set interval of the vehicle speed is 7km/h to 13km/h, and the set interval of the accelerator opening is 0 to 2 percent.
The acquisition and calculation of the vehicle speed and the calculation of the current energy recovery power and the current maximum allowable recovery power are prior art. Through the operation, the pointer 6 points to the energy recovery scale 13 when the vehicle is in energy recovery, so that the running power condition of the vehicle is displayed more comprehensively, a driver can know the current capacity recovery conveniently, and the driver can perform reasonable driving operation. When the pointer 6 indicates that the capacity recovery scale interval is reached, the engine start-stop flag bit is displayed normally, and the real-time available power of the motor is not zero.
As shown in fig. 1 and fig. 3, a power meter display system for a hybrid electric vehicle, which uses the above display method, includes a vehicle control unit 1 capable of obtaining the power required by the driver and calculating the maximum power allocatable to the motor, a motor controller 2 for transmitting the real-time available power of the motor, an engine controller 3 for transmitting the real-time available power of the engine, and an instrument controller 5 for receiving the information transmitted by the vehicle control unit 1 to perform power meter display control. The vehicle control unit 1 is a vehicle control element, the motor controller 2 is an element for controlling the motor action and state on the vehicle, and the engine controller 3 is an element for controlling the engine action and state on the vehicle. The power required by the driver and the maximum power that can be allocated to the electric machine are calculated as the functions of the vehicle control unit 1 itself. The required power of the driver is obtained by looking up a table according to the opening degree of an accelerator pedal and the vehicle speed, which is the prior art. The input end of the vehicle control unit 1 is connected with an accelerator pedal sensor and a vehicle speed sensor (connection relation is not shown in fig. 3), and the opening of the accelerator pedal is obtained according to information sent by the accelerator pedal sensor, and the vehicle speed is obtained according to vehicle speed information sent by the vehicle speed sensor. The motor controller 2 can obtain the real-time available power of the motor, which is obtained mainly according to the available torque and the rotating speed of the motor, and the calculation of the real-time available power of the motor is the prior art. The engine controller 3 can obtain the real-time available power of the engine as the engine has functions, the real-time available power of the engine is mainly obtained according to the engine rotating speed and the maximum torque limit of the engine, and the calculation of the real-time available power of the engine is the prior art. The meter controller 5 controls the meter 4 to display information to be the function of the meter, the meter 4 comprises an electronic display screen, and the meter controller 5 controls the power meter to be displayed on a main meter of the meter 4 in an electronic display mode.
The motor controller 2 and the engine controller 3 are respectively connected with the vehicle control unit 1, and the instrument controller 5 is connected with the output end of the vehicle control unit 1. The output end of the instrument controller 5 is connected with an instrument 4.
After the vehicle is started, the vehicle control unit 1 calculates the sum of the current real-time available power of the motor and the real-time available power of the engine, calculates the percentage of the current required power in the sum of the current real-time available power of the motor and the real-time available power of the engine, and sends the percentage information to the instrument controller 5, and the instrument controller 5 controls a power meter in the display of the instrument 4 to display the percentage. The vehicle control unit 1 may obtain vehicle start information through a vehicle start module, which is not described herein in detail for the prior art. The method comprises the steps that while the percentage of current required power in the sum of current motor real-time available power and engine real-time available power is displayed, the vehicle control unit 1 obtains the maximum working power of the current motor during independent driving according to the current motor real-time available power and the current power which the vehicle control unit 1 can maximally allocate to the motor, and the smaller value of the current motor real-time available power and the current power which the vehicle control unit 1 can maximally allocate to the motor is the maximum working power of the current motor during independent driving. The vehicle control unit 1 calculates the percentage of the maximum working power of the current motor when the current motor is driven independently to the sum of the current motor real-time available power and the engine real-time available power, and controls the instrument controller 5 to display the percentage in the power meter, wherein the percentage is used as an engine start-stop zone bit.
The power meter comprises a pointer 6, an inner ring 7, an outer ring 8 and an indication mark 9 of an engine start-stop mark position, a 0% to 100% driving power scale 10 is arranged between the outer ring 8 and the inner ring 7, a mark ring 14 is arranged on the inner side of the inner ring 7, two ends of the pointer 6 are respectively connected with the outer ring 8 and the mark ring 14, the pointer 6 can move along the outer ring 8 and the mark ring 14 and can point to any scale in the 0% to 100% scale, and the pointer 6 points to the corresponding scale by the percentage of the current required power to the sum of the current motor real-time available power and the current engine real-time available power. If the current percentage is 40% then the pointer 6 points to the 40% scale. The indication mark 9 is located on the outer side of the outer ring 8 and can point to any scale in the scales from 0% to 100%, after the percentage corresponding to the engine start-stop mark position is calculated, the indication mark 9 indicates on the scale corresponding to the percentage in the driving power scales 10 from 0% to 100%, and if the percentage corresponding to the engine start-stop mark position is 50%, the indication mark 9 indicates 50% of the scale in the indication driving power scales 10.
A motor operation mark 11 which is lightened when the motor works to drive the vehicle and an engine operation mark 12 which is lightened when the engine works to drive the vehicle are arranged between the outer ring 8 and the inner ring 7, the motor operation mark 11 is positioned on the left side of the indicating mark 9, the engine operation mark 12 is positioned on the right side of the indicating mark 9, and the motor operation mark 11 and the engine operation mark 12 can move along with the indicating mark 9. Thereby can make power meter display interface rationally show current drive power state and engine start and stop the marker bit through above-mentioned setting, make the driver can directly perceivedly know the holistic drive power state of vehicle through power meter display interface, the driver of being convenient for rationally operates the vehicle.
When the vehicle is started, the gear is in the D gear or the R gear, and the motor torque is larger than a certain value, the vehicle control unit 1 controls the instrument controller 5 to light the lightning graphic identifier, wherein the certain value can be set manually, and preferably is 3Nm (Nm). When the engine running is met and the torque is larger than a certain value, the vehicle control unit 1 controls the instrument controller 5 to light the oil drop graphic identifier, the certain value can be set manually, and the certain value is preferably 2Nm (Nm). When the vehicle is started and is not in an idle state, the gear is in a D gear or an R gear, the engine is started, the engine torque is greater than 2Nm, the motor torque is greater than 3Nm, and the accelerator opening is greater than 2%, the oil drop graphical identification and the lightning graphical identification are simultaneously lightened. The oil drop graphic mark and the lightning graphic mark are lighted together to indicate that the power of the motor and the engine drives the vehicle to work. The vehicle control unit 1 obtains vehicle driving information through a vehicle starting module, obtains whether the vehicle is in idle speed or not through a vehicle speed state obtained through a vehicle speed sensor, obtains whether the engine is in a starting state and engine torque or not through information sent by an engine controller 3, obtains the motor torque through information sent by a motor controller 2, obtains a gear through a gear sensor, and obtains accelerator opening through an accelerator opening sensor.
When the vehicle is driven, the vehicle not only comprises a power output driving section, but also has the working condition of sliding capacity recovery or braking capacity recovery. The vehicle control unit 1 can obtain the current vehicle energy recovery power, and the function is the function of the vehicle control unit 1 itself and is not described herein for the prior art. The vehicle control unit 1 is connected with a battery manager 15 (also called a battery management system, BMS in english), and the vehicle control unit 1 obtains the current maximum allowable recovery power of the vehicle according to the maximum power generated by the motor sent by the motor controller 2 and the maximum charging power of the power battery sent by the battery manager 15. The motor controller 2 can send the maximum power generated by the motor as its own function, and the maximum charging power of the power battery sent by the battery manager 15 as its own function. The maximum power of the motor generator sent by the motor controller 2 and the maximum charging power of the power battery sent by the battery manager 15 are mutually restricted, and the minimum power of the two is taken as the maximum allowable recovery power of the current vehicle.
When the vehicle is started, the gear is in a D gear or an R gear, the vehicle speed is in a set interval, the accelerator opening is in a set interval, the wheel end required torque is a negative value, and the actual torque of the motor is a negative value, the vehicle enters a capacity recovery state, the pointer 6 does not indicate in the vehicle driving scale at the moment, and the pointer 6 moves in the energy recovery scale 13. The set interval of the vehicle speed is 7km/h to 13km/h, and the set interval of the accelerator opening is 0 to 2 percent. The vehicle control unit 1 is connected with a wheel end controller, and the wheel end required torque is obtained through signals sent by the wheel end controller. When the vehicle enters the energy recovery state, the vehicle control unit 1 calculates the ratio of the current energy recovery power to the current maximum allowable recovery power to obtain the current energy recovery power percentage and controls the display interface of the power meter to display, the display interface of the power meter further comprises an energy recovery scale 13 which is arranged between the outer ring 8 and the inner ring 7 and ranges from-100% to 0%, the energy recovery scale 13 and the driving power scale 10 share a 0% scale, and the pointer 6 indicates the energy recovery power percentage when being in the energy recovery scale 13 interval. Through the operation, the pointer 6 points to the energy recovery scale 13 when the vehicle is in energy recovery, so that the running power condition of the vehicle is displayed more comprehensively, a driver can know the current capacity recovery conveniently, and the driver can perform reasonable driving operation. When the driver releases the accelerator pedal when the vehicle enters the capability recovery state, the required power is 0.
The power meter display interface also comprises a power display section 16. The vehicle control unit 1 receives a signal sent by the battery manager 15 to obtain the electric quantity of the current power battery and sends the electric quantity to the instrument controller 5, the instrument controller 5 controls the electric quantity display section 16 on the power meter to display electric quantity information, the electric quantity display section 16 is arranged on the outer side of the bottom of the outer ring 8, the electric quantity display section 16 is arc-shaped, and the arc length is longer when the electric quantity is higher. In the power meter display interface, the inside of the sign ring 14 may display the average vehicle speed of the vehicle in text, for example, the average vehicle speed is "37.5 km/h", which is not shown in fig. 1. An OFF mark is further arranged between the outer ring 8 and the inner ring 7 in the power meter display interface, the OFF mark is positioned on the anticlockwise side of the 100% scale and is close to the 100% scale, the pointer 6 points to the OFF mark when the vehicle is powered OFF, and the power meter is turned OFF and displayed in the whole state after a period of time. The content displayed on the power meter display interface is the power meter.
The method and the structure driving mode both adopt a standard for displaying, whether pure motor driving or pure engine driving or parallel motor and engine driving is realized according to the percentage, the proportion of the current power output to the total capacity of the current driving system (the sum of the real-time available power of the motor and the real-time available power of the engine is the total capacity of the current driving system) is known, so that a driver can know the current driving situation according to the current proportion, the situation that the driver mistakenly operates the vehicle because the display sections in the power output section show different proportions and are close together can not occur, the driver understands the driving power of the current operating vehicle, and the proportion shows the ratio of the required power of the driver to the total capacity of the current driving system, thereby the driver can more easily understand the required driving power, therefore, the reasonable display can be carried out in the mode, so that the driver can operate the vehicle more reasonably. The engine start and stop zone bit is displayed simultaneously, so that a driver can clearly know when the engine is started, the driver can be guided to start the engine as far as possible, the vehicle is driven by the motor as far as possible during running, namely, the vehicle is driven by pure electricity, the fuel consumption of the vehicle is low during pure electricity running, the economical efficiency is good, and the environment can be protected, so that the system can guide the driver to operate the vehicle more reasonably, and the vehicle runs more economically and more environmentally.
Example two:
the structure and principle of the second embodiment are basically the same as those of the first embodiment, and the difference is that: the instrument controller 5 is connected with an accelerator pedal switch, the accelerator pedal switch is a switch which triggers an output signal when an accelerator pedal is fully stepped on and is further stepped on, and the instrument controller 5 is further connected with the engine controller 3, the motor controller 2 and the air conditioner controller. When any one of conditions that an accelerator pedal switch sends a trigger signal, an engine controller 3 sends a self-starting engine signal, a motor controller 2 sends motor fault information, an air conditioner controller sends a request for starting an engine signal and the engine controller 3 sends an engine prohibition stop condition is met, an indicator 9 corresponding to an engine starting and stopping flag bit in a power meter is controlled by a meter controller 5 to point to 10% of scales. When any one of the above conditions is met, the engine needs to be forcibly started no matter the current driving condition, which are normal phenomena, the current pointer 6 easily exceeds the indication mark 9 by pointing the indication mark 9 corresponding to the engine start-stop mark bit to 10% of scales, so that the driver is prevented from mistakenly considering the vehicle fault, and when the conditions are not met, the indication mark 9 corresponding to the engine start-stop mark bit normally indicates, namely, the indication is displayed after calculation of the vehicle controller 1.
Example three:
the third embodiment is basically the same as the first embodiment in structure and principle, and the difference is that: the power meter display interface displays numbers and symbols, and the calculated percentage of the current required power to the sum of the current motor real-time available power and the current engine real-time available power is directly expressed in a number coincidence manner, such as displaying 41%. And displaying the engine start and stop flag bit by numbers and symbols, wherein the engine start and stop flag bit comprises the following steps: 40% ", energy recovery power percentage, also shown directly in numbers and symbols," energy recovery: 50% ". The engine operation indicator 12 and the motor operation indicator 11 are located on both sides of the displayed number. Through the arrangement, the display is visual, and a driver can know the running state of the vehicle conveniently. The vehicle control unit 1 obtains the actual power feedback quantity and the maximum feedback power under the common working condition, and the energy recovery power percentage is obtained by dividing the actual power feedback quantity by the maximum feedback power under the common working condition.
The specific embodiments described herein are merely illustrative of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the terms vehicle control unit 1, motor controller 2, engine controller 3, meter 4, meter controller 5, pointer 6, inner ring 7, outer ring 8, indicator 9, driving power scale 10, motor running indicator 11, engine running indicator 12, energy recovery scale 13, flag ring 14, battery manager 15, power display section 16, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (9)
1. A method for displaying a power meter of a hybrid electric vehicle is characterized by comprising the following steps:
vehicle drive display: obtaining the required power of a driver after a vehicle is started, obtaining the real-time available power of a motor and the real-time available power of an engine, calculating the sum of the current real-time available power of the motor and the real-time available power of the engine, calculating the percentage of the current required power in the sum of the current real-time available power of the motor and the real-time available power of the engine, and displaying the calculated percentage in a power meter;
calculating and displaying an engine start-stop zone bit: obtaining the maximum working power of the current motor during independent driving according to the current real-time available power of the motor and the maximum power which can be distributed to the motor by the current vehicle control unit (1), calculating the percentage of the maximum working power of the current motor during independent driving to the sum of the current real-time available power of the motor and the real-time available power of the engine, taking the percentage as an engine start-stop flag bit, and displayed in the power meter, the display interface of the power meter comprises 0% to 100% of driving power scales (10), the percentage corresponding to the calculated engine starting and stopping flag bit is indicated on the scale corresponding to the percentage in the driving power scale (10) by the set indication mark (9), the left side of the indication mark (9) is provided with a motor operation mark (11), the right side of the indication mark is provided with an engine operation mark (12), and the motor operation mark (11) and the engine operation mark (12) synchronously move along with the movement of the indication mark (9).
2. The hybrid vehicle power meter display method according to claim 1, wherein the motor operation indicator (11) is lighted in a display interface of the power meter when the motor operates to drive the vehicle; an engine operation indicator (12) is illuminated in a display interface of the power meter while the vehicle is driven by the engine operation.
3. The hybrid electric vehicle power meter display method according to claim 2, wherein in the calculation and display of the engine start-stop flag bit, the current real-time available power of the motor is compared with the current maximum power which can be allocated to the motor by the vehicle control unit (1), and a smaller object is selected as the current maximum working power when the motor is driven alone.
4. The hybrid electric vehicle power meter display method according to claim 2 or 3, characterized in that a pointer (6) is arranged in a display interface of the power meter, and the pointer (6) points to a corresponding scale in the driving power scale (10) according to the percentage of the current required power to the sum of the current motor real-time available power and the current engine real-time available power.
5. The hybrid electric vehicle power meter display method according to claim 4, wherein a display maximum percentage value is set in the calculation and display of the engine start-stop flag bit, when the percentage of the maximum output power of the current motor when the motor is driven alone, which accounts for the sum of the current real-time available power of the motor and the real-time available power of the engine, is greater than the display maximum percentage value, the display maximum percentage value is taken as the percentage value corresponding to the engine start-stop flag bit, and the display maximum percentage value is selected from the range of 0% to 50% of the driving power scale (10).
6. The hybrid electric vehicle power meter display method according to claim 4, wherein the power meter display interface comprises an energy recovery scale (13) of-100% to 0%, the energy recovery scale (13) shares a scale at 0% with the driving power scale (10), and the pointer (6) indicates the energy recovery power percentage when in the energy recovery scale (13) interval, wherein the percentage is the ratio of the current energy recovery power to the current maximum allowable recovery power.
7. A hybrid electric vehicle power meter display system comprises a vehicle control unit (1) capable of obtaining the required power of a driver and calculating the maximum power capable of being distributed to a motor, a motor controller (2) used for sending the real-time available power of the motor, an engine controller (3) used for sending the real-time available power of the engine and an instrument controller (5) used for receiving information sent by the vehicle control unit (1) to perform power meter display control, and is characterized in that the motor controller (2) and the engine controller (3) are respectively connected with the vehicle control unit (1), the instrument controller (5) is connected with the output end of the vehicle control unit (1), the vehicle control unit (1) calculates the percentage of the current required power in the sum of the current real-time available power of the motor and the real-time available power of the engine, and controls the power meter to display the percentage through the instrument controller (5), the vehicle control unit (1) obtains the maximum working power of the current motor during independent driving according to the current real-time available power of the motor and the maximum power which can be allocated to the motor by the current vehicle control unit (1), calculates the percentage of the maximum working power of the current motor during independent driving to the sum of the current real-time available power of the motor and the real-time available power of an engine, controls the power meter to display the percentage through an instrument controller (5), the percentage is used as an engine start-stop mark bit, a display interface of the power meter comprises an indication mark (9) of the engine start-stop mark bit and a driving power scale (10) of 0% -100%, the indication mark (9) indicates the calculated percentage corresponding to the engine start-stop mark bit on the scale of the corresponding percentage in the driving power scale (10), and a motor running mark (11) is arranged on the left side of the indication mark (9), an engine operation mark (12) is arranged on the right side, and the motor operation mark (11) and the engine operation mark (12) synchronously move along with the movement of the indication mark (9).
8. The hybrid vehicle power meter display system according to claim 7, wherein a pointer (6), an inner ring (7) and an outer ring (8) are further included in the display interface of the power meter, the 0% to 100% driving power scale (10) is arranged between the outer ring (8) and the inner ring (7), a mark ring (14) is arranged on the inner side of the inner ring (7), the pointer (6) is connected with the outer ring (8) and the mark ring (14) at two ends respectively, the pointer (6) can move along the outer ring (8) and the mark ring (14) and can point to any scale in the 0% to 100% scales, the indication mark (9) is positioned on the outer side of the outer ring (8) and can point to any scale in the 0% to 100% scales, the motor operation mark (11) and the engine operation mark (12) are arranged between the outer ring (8) and the inner ring (7), the motor operation mark (11) is lightened in a display interface of the power meter when the motor works to drive the vehicle, and the engine operation mark (12) is lightened when the engine works to drive the vehicle.
9. The hybrid electric vehicle power meter display system according to claim 8, wherein the vehicle control unit (1) is capable of obtaining the current vehicle energy recovery power, the vehicle control unit (1) is connected with a battery manager (15), the vehicle control unit (1) obtains the current vehicle maximum allowable recovery power according to the maximum motor power sent by the motor controller (2) and the maximum power charged by the power battery sent by the battery manager (15), the vehicle control unit (1) calculates the ratio of the current energy recovery power to the current maximum allowable recovery power to obtain the current energy recovery power percentage and controls a display interface of the power meter to display, the display interface of the power meter further includes an energy recovery scale (13) of-100% to 0% arranged between the outer ring (8) and the inner ring (7), the energy recovery scale (13) and the driving power scale (10) share the scale at 0%, and the pointer (6) indicates the percentage of energy recovery power when being in the interval of the energy recovery scale (13).
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FR3013643B1 (en) * | 2013-11-27 | 2017-03-03 | Technoboost | DISPLAY DEVICE FOR A HYBRID VEHICLE COMPRISING AN INTERNAL COMBUSTION ENGINE AND AT LEAST ONE HYBRIDIZING MOTOR POWER SOURCE |
CN107415931A (en) * | 2016-04-08 | 2017-12-01 | 三菱自动车工业株式会社 | Driving ancillary equipment |
CN106042932A (en) * | 2016-07-21 | 2016-10-26 | 浙江吉利汽车研究院有限公司 | Hybrid vehicle display apparatus |
CN108944449A (en) * | 2017-05-18 | 2018-12-07 | 三菱自动车工业株式会社 | A kind of display device of hybrid vehicle |
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