CN109677269A - A kind of scaling method and system of power-efficient point - Google Patents
A kind of scaling method and system of power-efficient point Download PDFInfo
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- CN109677269A CN109677269A CN201811562067.9A CN201811562067A CN109677269A CN 109677269 A CN109677269 A CN 109677269A CN 201811562067 A CN201811562067 A CN 201811562067A CN 109677269 A CN109677269 A CN 109677269A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/12—Recording operating variables ; Monitoring of operating variables
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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Abstract
The present invention provides the scaling method and system of a kind of power-efficient point, is applied to hydrogen cell automobile.This method is by when detecting plus when hydrogen commencing signal, obtain the current operating conditions parameter of automobile.Based on current hydrogen pressure value and present hydrogen bottle temperature, hydrogen consumption quality is calculated.Based on current driving mileage, electric quantity change value and hydrogen consumption quality, rate of consumption of hydrogen is calculated.If the difference of the peak efficiency of current hydrogen fuel cell and the difference and rate of consumption of hydrogen of calibration efficiency and calibration consumption rate outside preset range, determines the power-efficient point migration of hydrogen fuel cell.Based on peak efficiency, the quality of hydrogen consumption and runing time, determines the newest power-efficient point of hydrogen fuel cell and demarcated.By above-mentioned scaling method, do not need using the new power-efficient point of hydrogen fuel cell is re-scaled again after artificial Timing measurement, to realize the purpose for improving vehicle operation efficiency, reducing specific fuel consumption, reducing vehicle operating cost and maintenance cost.
Description
Technical field
The present invention relates to technical field of data processing, and in particular to a kind of scaling method and system of power-efficient point.
Background technique
With the development of science and technology, environmental protection also becomes one of all trades and professions focus of attention.In automobile industry, new energy
Automobile is increasingly becoming one of main vehicles, such as hydrogen cell automobile.
The vehicle structure of hydrogen cell automobile mainly includes: hydrogen fuel cell, power battery, motor and subsidiary engine.It is expert at
During sailing, power required for hydrogen cell automobile travels is mainly to be provided by power battery, when power battery provides
Power when being unsatisfactory for vehicle demand, hydrogen fuel cell provides additional power for vehicle as supplemental power source.For example, when dynamic
When the remaining capacity of power battery is more, for vehicle in the suddenly transient conditions such as acceleration, hydrogen fuel cell can the offer of auxiliary power battery
Power needed for vehicle.When the remaining capacity of power battery is lower, hydrogen fuel cell provides vehicle demand power for vehicle.Hydrogen
Fuel cell will do it energy distribution when exporting energy, and part energy meets the needs of vehicle, and remaining another part is
Power battery charges.
Relatively conventional hydrogen fuel cell energy distributing method is Constant Voltage Energy Distribution Algorithm at present, is by by vehicle
Demand voltage is set as fixed voltage value, and selects one or two power-efficient point of hydrogen fuel cell output, in conjunction with fixation
Voltage value and power-efficient point calculate the demand current of vehicle and the efficiency of hydrogen fuel cell.But hydrogen cell automobile exists
The complex working conditions such as starting, idle and dynamically load can be undergone in operational process, be will affect hydrogen fuel cell performance, are led to original
First power-efficient point changes.Power-efficient point is solidificated in and calculates demand current and hydrogen fuel cell efficiency by the prior art
Formula in, need manually periodically go measure and demarcate hydrogen fuel cell new power-efficient point, when calibration not in time or choosing
Take the value of power-efficient point that can seriously affect the performance of hydrogen fuel cell when there is large error.Therefore, there is dimension in the prior art
The problems such as protecting performance that is at high cost and being easy influence hydrogen fuel cell.
Summary of the invention
In view of this, the embodiment of the present invention provides the scaling method and system of a kind of power-efficient point, to solve existing skill
Art is there are maintenance cost height and is easy the problems such as influencing the performance of hydrogen fuel cell.
To achieve the above object, the embodiment of the present invention provides the following technical solutions:
First aspect of the embodiment of the present invention discloses a kind of scaling method of power-efficient point, is applied to hydrogen fuel cell vapour
Vehicle, which comprises
When detecting plus when hydrogen commencing signal, obtain the current operating conditions parameter of automobile, the current operating conditions ginseng
Number includes current driving mileage Li, in preset time period every time the electric quantity change value of power battery before and after external charge power supply, when
Preceding hydrogen pressure value Pi, present hydrogen bottle temperature TiWith the runing time of hydrogen fuel cell in the preset time period, the preset time
Section is that primary plus hydrogen completes signal extremely detection when the period between front-end hydrogenation commencing signal before detecting；
Based on the current hydrogen pressure value PiWith present hydrogen bottle temperature Ti, useCalculate hydrogen
The quality Δ m of consumption, wherein Pi-1And Ti-1Primary plus hydrogen completes the hydrogen pressure value measured after signal and hydrogen before respectively detecting
Bottle temperature value, V are hydrogen cylinder volume, and M is the molal weight of hydrogen, and R is gas constant；
Based on the current driving mileage Li, electric quantity change value and hydrogen consumption quality Δ m, calculate rate of consumption of hydrogen；
If the peak efficiency of current hydrogen fuel cell and the difference of calibration efficiency are outside preset range, and the hydrogen disappears
The difference of consumption rate and calibration consumption rate is outside preset range, it is determined that the power-efficient point of the previous calibration of the hydrogen fuel cell
Migration is reminded and re-scales power-efficient point；
Based on the peak efficiency, the quality Δ m of hydrogen consumption and runing time, newest power-efficient point is determined, it is right
It is fixed that the power-efficient of the hydrogen fuel cell clicks through rower.
Optionally, described to be based on the current driving mileage Li, electric quantity change value and hydrogen consumption quality Δ m, calculate
Rate of consumption of hydrogen, comprising:
Use Δ L=Li-Li-1The mileage travelled changing value Δ L is calculated, wherein Li-1To be primary before detecting plus
Hydrogen completes the mileage travelled measured after signal；
It usesThe rate of consumption of hydrogen λ is calculated, wherein LΔSOCIt is described external for external charge mileage
The mileage that charges has with the electric quantity change value presets corresponding relationship.
Optionally, described based on the peak efficiency, the quality Δ m of hydrogen consumption and runing time, determine newest function
Rate high-efficiency point, comprising:
It usesIt calculates and obtains the newest power-efficient point P, whereinFor hydrogen stream
Amount,For hydrogen calorific value, η is the peak efficiency, the hydrogen flowing quantity by the hydrogen consumption quality Δ m divided by
The runing time obtains.
Optionally, the method also includes:
When detecting plus hydrogen completes signal, record current hydrogen pressure value, present hydrogen bottle temperature, current power battery it is surplus
Remaining electricity SOC and current driving mileage.
Optionally, it is described the hydrogen fuel cell is demarcated after, further includes:
Judge the difference between the peak efficiency and the preceding peak efficiency once obtained that currently obtain whether in preset range
It is interior；
If so, showing the instruction information that instruction verification passes through on automobile instrument panel；
If it is not, then show that instruction verifies unsanctioned instruction information on automobile instrument panel, and by the newest power
The power-efficient point that high-efficiency point is once calculated before being set as.
Optionally, it is described the hydrogen fuel cell is demarcated after, further includes:
Record the newest power-efficient point.
Second aspect of the embodiment of the present invention discloses a kind of calibration system of power-efficient point, is applied to hydrogen fuel cell vapour
Vehicle, the system comprises:
Acquiring unit, it is described to work as when detecting plus when hydrogen commencing signal, obtain the current operating conditions parameter of automobile
Preceding running state parameter includes current driving mileage Li, in preset time period every time before and after external charge power supply power battery electricity
Measure changing value, current hydrogen pressure value Pi, present hydrogen bottle temperature TiWith the runing time of hydrogen fuel cell in the preset time period,
The preset time period is that primary plus hydrogen completes signal to detection when the period between front-end hydrogenation commencing signal before detecting；
Quality calculation unit, for being based on the current hydrogen pressure value PiWith present hydrogen bottle temperature Ti, use
Calculate the quality Δ m of hydrogen consumption, wherein Pi-1And Ti-1Primary plus hydrogen completes the hydrogen pressure measured after signal before respectively detecting
Value and hydrogen cylinder temperature value, V are hydrogen cylinder volume, and M is the molal weight of hydrogen, and R is gas constant；
Consumption rate computing unit, for being based on the current driving mileage Li, electric quantity change value and hydrogen consumption quality
Δ m calculates rate of consumption of hydrogen；
Determination unit, if for the peak efficiency of current hydrogen fuel cell and the difference of calibration efficiency outside preset range,
And the difference of the rate of consumption of hydrogen and calibration consumption rate is outside preset range, it is determined that the previous mark of the hydrogen fuel cell
Fixed power-efficient point migration, reminds and re-scales power-efficient point；
Calibration unit determines newest for quality Δ m and runing time based on the peak efficiency, hydrogen consumption
It is fixed to click through rower to the power-efficient of the hydrogen fuel cell for power-efficient point.
Optionally, the consumption rate computing unit includes:
Mileage calculation module, for using Δ L=Li-Li-1The mileage travelled changing value Δ L is calculated, wherein
Li-1To detect that preceding primary plus hydrogen completes the mileage travelled measured after signal；
Consumption rate computing module, for usingThe rate of consumption of hydrogen λ is calculated, wherein LΔSOCIt is outer
Charging mileage is connect, the external charge mileage and the electric quantity change value have default corresponding relationship.
Optionally, the calibration unit includes:
Power-efficient point determining module, for usingIt calculates and obtains the newest power-efficient
Point P, whereinFor hydrogen flowing quantity,For hydrogen calorific value, η is the peak efficiency, and the hydrogen flowing quantity is by described
The quality Δ m of hydrogen consumption is obtained divided by the runing time.
Optionally, the system also includes:
Verification unit, the difference between peak efficiency and the preceding peak efficiency once obtained for judging currently to obtain are
It is no within a preset range, if so, the instruction information that passes through of instruction verification is shown on automobile instrument panel, if it is not, then in automobile
It shows that instruction verifies unsanctioned instruction information on instrument board, and is once calculated before setting the newest power-efficient point to
Obtained power-efficient point.
Scaling method and system based on a kind of power-efficient point that the embodiments of the present invention provide, are applied to hydrogen fuel
Battery car, this method comprises: when detecting plus when hydrogen commencing signal, obtaining the current operating conditions parameter of automobile.Based on working as
Preceding hydrogen pressure value and present hydrogen bottle temperature calculate hydrogen consumption quality.Disappeared based on current driving mileage, electric quantity change value and hydrogen
Quality is consumed, rate of consumption of hydrogen is calculated.If currently the difference of the peak efficiency of hydrogen fuel cell and calibration efficiency is outside preset range,
And the difference of rate of consumption of hydrogen and calibration consumption rate is outside preset range, it is determined that the power of the previous calibration of hydrogen fuel cell
High-efficiency point migration, reminds and re-scales power-efficient point.Based on peak efficiency, the quality of hydrogen consumption and runing time, determine
It is fixed to click through rower to the power-efficient of hydrogen fuel cell for newest power-efficient point.In scheme provided by the invention, by adopting
The current operating conditions parameter for collecting automobile, calculates the hydrogen consumption quality and rate of consumption of hydrogen of hydrogen fuel cell, judges hydrogen fuel
Whether the power-efficient point of the previous calibration of battery migrates, and re-scales power-efficient point if so, reminding and determines newest function
It is fixed to click through rower to the power-efficient of hydrogen fuel cell for rate high-efficiency point.By above-mentioned scaling method do not need artificial Timing measurement,
The new power-efficient point of artificial calibration hydrogen fuel cell, can be avoided the property because of hydrogen fuel cell caused by measuring and demarcating not in time
The problem of capable of declining, improves vehicle operation efficiency, reduces specific fuel consumption, reduces vehicle operating cost and reduce vehicle to realize
The purpose of maintenance cost.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of scaling method flow chart of power-efficient point provided in an embodiment of the present invention；
Fig. 2 is the flow chart provided in an embodiment of the present invention for calculating rate of consumption of hydrogen；
Fig. 3 is a kind of structural block diagram of the calibration system of power-efficient point provided in an embodiment of the present invention；
Fig. 4 is a kind of structural block diagram of the calibration system of power-efficient point provided in an embodiment of the present invention；
Fig. 5 is a kind of structural block diagram of the calibration system of power-efficient point provided in an embodiment of the present invention；
Fig. 6 is a kind of structural block diagram of the calibration system of power-efficient point provided in an embodiment of the present invention；
Fig. 7 is a kind of structural block diagram of the calibration system of power-efficient point provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In this application, the terms "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion,
So that the process, method, article or equipment for including a series of elements not only includes those elements, but also including not having
The other element being expressly recited, or further include for elements inherent to such a process, method, article, or device.Do not having
There is the element limited in the case where more limiting by sentence "including a ...", it is not excluded that in the mistake including the element
There is also other identical elements in journey, method, article or equipment.
It can be seen from background technology that hydrogen cell automobile can undergo starting, idle and dynamic to add in the process of running
The complex working conditions such as load, will affect hydrogen fuel cell performance, original power-efficient point are caused to change.The prior art is by power
High-efficiency point is solidificated in the formula for calculating demand current and hydrogen fuel cell efficiency, needs manually periodically to go to measure and demarcate hydrogen combustion
The new power-efficient point for expecting battery, can serious shadow when demarcating the value for not in time or choosing power-efficient point and large error occur
Ring the performance of hydrogen fuel cell.Therefore, there are maintenance cost height and the easy performance etc. for influencing hydrogen fuel cell to ask for the prior art
Topic.
Therefore, the present invention provides the scaling method and system of a kind of power-efficient point, can judge the power of hydrogen fuel cell
Whether high-efficiency point migrates.When the migration of power-efficient point, newest power-efficient point is determined, to the power-efficient of hydrogen fuel cell
It is fixed to click through rower.It does not need artificial Timing measurement and demarcates the new power-efficient point of hydrogen fuel cell, avoid because measuring and demarcating
It causes the performance of hydrogen fuel cell to decline not in time, vehicle operation efficiency can be improved, specific fuel consumption is reduced, reduce vehicle operation
Cost and reduction vehicle maintenance cost.Specific implementation process is illustrated with the following examples.
With reference to Fig. 1, a kind of scaling method flow chart of power-efficient point provided in an embodiment of the present invention, the side are shown
Method the following steps are included:
Step S101: when detecting plus when hydrogen commencing signal, obtain the current operating conditions parameter of automobile.
During implementing step S101, the current operating conditions parameter includes current driving mileage Li, it is pre-
If the electric quantity change value of each external charge power supply front and back power battery, current hydrogen pressure value P in the periodi, present hydrogen bottle temperature
Spend TiWith the runing time of hydrogen fuel cell in the preset time period.
The preset time period is that hydrogen is once added to complete signal to detection when between front-end hydrogenation commencing signal before detecting
Period.
It should be noted that hydrogen fuel cell is provided with hydrogen cylinder, and when adding hydrogen into hydrogen cylinder, hydrogen fuel cell
An indication signal is sent to the entire car controller of automobile.
Such as: when hydroprocessing is carrying out, the indication signal is set 1, at the end of hydroprocessing, by the finger
Show that signal sets 0.I.e. when starting to carry out hydroprocessing, the indication signal is set to 1 by 0, and the indication signal has a rising
Edge simultaneously remains 1, and at the end of hydroprocessing, the indication signal is set to 0 by 1, and the indication signal has a failing edge simultaneously
Remain 0.The preset time period is the previous failing edge of the indication signal to the duration between current rising edge, works as inspection
It is indicated when measuring the failing edge of the indication signal plus hydrogen terminates, indicate to start when detecting the rising edge of the indication signal
Add hydrogen.
It should be noted that the electric quantity change value of power battery is before and after each external charge power supply in preset time period
Refer to: in the preset time period, when the use of external charge power supply being each time the power battery charging, recording the power
The electric quantity change value of battery.Remaining capacity i.e. after charging complete subtracts remaining capacity when starting to charge.
Step S102: it is based on the current hydrogen pressure value PiWith present hydrogen bottle temperature Ti, hydrogen, which is calculated, using formula (1) disappears
The quality Δ m of consumption.
The formula (1) are as follows:
Wherein, Pi-1And Ti-1Primary plus hydrogen completes the hydrogen pressure value and hydrogen cylinder temperature measured after signal before respectively detecting
Value, V are hydrogen cylinder volume, and M is the molal weight of hydrogen, and R is gas constant.
Step S103: it is based on the current driving mileage Li, electric quantity change value and hydrogen consumption quality Δ m, calculate hydrogen
Gas consumption rate.
Due to the mileage and consumption hydrogen fuel electricity that the total kilometrage of hydrogen powered vehicle operation is generated by consumption power battery electricity
The mileage composition that hydrogen in pond generates.During implementing step S103, pass through the current driving mileage LiWith
Electric quantity change value, the mileage that the hydrogen being calculated in consumption hydrogen fuel cell generates, in conjunction with the quality Δ of the hydrogen consumption
M calculates the rate of consumption of hydrogen.
Step S104: whether the difference of the peak efficiency and calibration efficiency that judge current hydrogen fuel cell is in preset range
Outside, and whether the difference of the rate of consumption of hydrogen and calibration consumption rate is outside preset range, if so, S105 is thened follow the steps,
If it is not, then the power-efficient point of the hydrogen fuel cell does not need to demarcate.
During implementing step S104, the peak efficiency from pre-recorded efficiency record sheet by looking into
It askes and obtains, the calibration efficiency and calibration consumption rate carry out test to the hydrogen fuel cell before factory by the automobile and obtain
?.If the peak efficiency of current hydrogen fuel cell and the difference of calibration efficiency are outside preset range, and the rate of consumption of hydrogen
Difference with calibration consumption rate then illustrates that the power-efficient point of the hydrogen fuel cell has occurred and that migration outside preset range.
It should be noted that the peak efficiency be the preset time period in peak efficiency, the preset range by
Technical staff is configured according to the actual situation.
Step S105: based on the peak efficiency, the quality Δ m of hydrogen consumption and runing time, newest power is determined
It is fixed to click through rower to the power-efficient of the hydrogen fuel cell for high-efficiency point.
During implementing step S105, is calculated using formula (2) and obtain the newest power-efficient point P.
The formula (2) are as follows:
Wherein,For hydrogen flowing quantity,For hydrogen calorific value, η is the peak efficiency, the hydrogen flowing quantity by
The quality Δ m of the hydrogen consumption is obtained divided by the runing time.
It should be noted that rower timing is clicked through in the power-efficient to the hydrogen fuel cell, by the mark of the automobile
Fixed switch is opened, and is read the band electric erazable programmable that the newest power-efficient point is assigned to the automobile using calibrating function
Variable in memory write (Electrically Erasable Programmable read only memory, EEPROM),
It is fixed that rower is clicked through to the power-efficient of the hydrogen fuel cell.
Preferably, when detecting plus hydrogen completes signal, current hydrogen pressure value, present hydrogen bottle temperature, current power are recorded
The remaining capacity (State Of Charge, SOC) and current driving mileage of battery.
Preferably, after executing the step S105, judge that the peak efficiency currently obtained once obtains most with preceding
Within a preset range whether the difference between high efficiency, indicate to verify the instruction passed through if so, showing on automobile instrument panel
Information.If it is not, then show that instruction verifies unsanctioned instruction information on automobile instrument panel, and by the newest power-efficient
The power-efficient point that point is once calculated before being set as.The preset range is set according to the actual situation by technical staff
It sets.
Preferably, after executing the step S105, the newest power-efficient point is recorded.
In embodiments of the present invention, by acquiring the current operating conditions parameter of automobile, the hydrogen of hydrogen fuel cell is calculated
Quality and rate of consumption of hydrogen are consumed, judges whether the power-efficient point of the previous calibration of hydrogen fuel cell migrates, if so, reminding weight
New nominal power high-efficiency point simultaneously determines newest power-efficient point, and it is fixed to click through rower to the power-efficient of hydrogen fuel cell.It is not required to
The new power-efficient point for wanting artificial Timing measurement, artificial calibration hydrogen fuel cell, can be avoided and make not in time because measuring and demarcating
The problem of declining at the performance of hydrogen fuel cell improves vehicle operation efficiency, reduces specific fuel consumption, reduces vehicle to realize
Operating cost and the purpose for reducing vehicle maintenance cost.
The process for the calculating rate of consumption of hydrogen being related in above-mentioned Fig. 1 step S103 is shown of the invention real with reference to Fig. 2
The flow chart of the calculating rate of consumption of hydrogen of example offer is provided, comprising the following steps:
Step S201: the mileage travelled changing value Δ L is calculated using formula (3).
The formula (3) are as follows:
Δ L=Li-Li-1 (3)
Wherein, Li-1To detect that preceding primary plus hydrogen completes the mileage travelled measured after signal.
Step S202: being based on the mileage travelled changing value Δ L, calculates the rate of consumption of hydrogen λ using formula (4).
The formula (4) are as follows:
Wherein LΔSOCFor external charge mileage, the external charge mileage has default corresponding pass with the electric quantity change value
System.It should be noted that the external charge mileage is the external charge electricity operation of power battery described in the automobile consumption
Mileage.Wherein, it is based on the electric quantity change value, inquires and is obtained in the external charge from pre-recorded mileage record table
Journey.
In embodiments of the present invention, by acquiring the current operating conditions parameter of automobile, the hydrogen of hydrogen fuel cell is calculated
Quality and rate of consumption of hydrogen are consumed, judges whether the power-efficient point of the previous calibration of hydrogen fuel cell migrates, if so, reminding weight
New nominal power high-efficiency point simultaneously determines newest power-efficient point, and it is fixed to click through rower to the power-efficient of hydrogen fuel cell.It is not required to
The new power-efficient point for wanting artificial Timing measurement, artificial calibration hydrogen fuel cell, can be avoided and make not in time because measuring and demarcating
The problem of declining at the performance of hydrogen fuel cell improves vehicle operation efficiency, reduces specific fuel consumption, reduces vehicle to realize
Operating cost and the purpose for reducing vehicle maintenance cost.
It is corresponding with the scaling method of a kind of power-efficient point that the embodiments of the present invention provide, with reference to Fig. 3, the present invention
Embodiment additionally provides a kind of structural block diagram of the calibration system of power-efficient point, the system comprises: acquiring unit 301, matter
Measure computing unit 302, consumption rate computing unit 303, determination unit 304 and calibration unit 305.
Acquiring unit 301, for when detecting plus when hydrogen commencing signal, obtain the current operating conditions parameter of automobile, institute
Stating current operating conditions parameter includes current driving mileage Li, power battery before and after external charge power supply every time in preset time period
Electric quantity change value, current hydrogen pressure value Pi, present hydrogen bottle temperature TiWith in the preset time period when operation of hydrogen fuel cell
Between, the preset time period is that primary plus hydrogen completes signal to detection when the time between front-end hydrogenation commencing signal before detecting
Section.The corresponding content of step S101 that particular content is disclosed referring to embodiments of the present invention Fig. 1.
Quality calculation unit 302, for being based on the current hydrogen pressure value PiWith present hydrogen bottle temperature Ti, use formula (1)
Calculate the quality Δ m of hydrogen consumption, wherein Pi-1And Ti-1Primary plus hydrogen completes the hydrogen pressure measured after signal before respectively detecting
Value and hydrogen cylinder temperature value, V are hydrogen cylinder volume, and M is the molal weight of hydrogen, and R is gas constant.Particular content is referring to above-mentioned
The corresponding content of step S102 that Fig. 1 of the embodiment of the present invention is disclosed.
Consumption rate computing unit 303, for being based on the current driving mileage Li, electric quantity change value and hydrogen consumption matter
Δ m is measured, rate of consumption of hydrogen is calculated.Particular content is corresponding interior referring to the step S103 that embodiments of the present invention Fig. 1 is disclosed
Hold.
Determination unit 304, if for the peak efficiency of current hydrogen fuel cell and the difference of calibration efficiency in preset range
Outside, and the difference of the rate of consumption of hydrogen and calibration consumption rate is outside preset range, it is determined that before the hydrogen fuel cell
The power-efficient point migration of one calibration, reminds and re-scales power-efficient point.Particular content is referring to embodiments of the present invention Fig. 1
The open corresponding content of step S104.
Calibration unit 305 determines newest for quality Δ m and runing time based on the peak efficiency, hydrogen consumption
Power-efficient point, it is fixed that rower is clicked through to the power-efficient of the hydrogen fuel cell.Particular content is implemented referring to aforementioned present invention
The open corresponding content of step S105 of example diagram 1.
In embodiments of the present invention, by acquiring the current operating conditions parameter of automobile, the hydrogen of hydrogen fuel cell is calculated
Quality and rate of consumption of hydrogen are consumed, judges whether the power-efficient point of the previous calibration of hydrogen fuel cell migrates, if so, reminding weight
New nominal power high-efficiency point simultaneously determines newest power-efficient point, and it is fixed to click through rower to the power-efficient of hydrogen fuel cell.It is not required to
The new power-efficient point for wanting artificial Timing measurement, artificial calibration hydrogen fuel cell, can be avoided and make not in time because measuring and demarcating
The problem of declining at the performance of hydrogen fuel cell improves vehicle operation efficiency, reduces specific fuel consumption, reduces vehicle to realize
Operating cost and the purpose for reducing vehicle maintenance cost.
With reference to Fig. 4, a kind of structural block diagram of the calibration system of power-efficient point provided in an embodiment of the present invention, institute are shown
Stating consumption rate computing unit 303 includes:
Mileage calculation module 3031, for the mileage travelled changing value Δ L to be calculated using formula (3), wherein
Li-1To detect that preceding primary plus hydrogen completes the mileage travelled measured after signal.Particular content is referring to embodiments of the present invention Fig. 2
The open corresponding content of step S201.
Consumption rate computing module 3032, for calculating the rate of consumption of hydrogen λ using formula (4), wherein L Δ SOC is outer
Charging mileage is connect, the external charge mileage and the electric quantity change value have default corresponding relationship.Particular content is referring to above-mentioned
The corresponding content of step S202 that Fig. 2 of the embodiment of the present invention is disclosed.
In embodiments of the present invention, by acquiring the current operating conditions parameter of automobile, the hydrogen of hydrogen fuel cell is calculated
Quality and rate of consumption of hydrogen are consumed, judges whether the power-efficient point of the previous calibration of hydrogen fuel cell migrates, if so, reminding weight
New nominal power high-efficiency point simultaneously determines newest power-efficient point, and it is fixed to click through rower to the power-efficient of hydrogen fuel cell.It is not required to
The new power-efficient point for wanting artificial Timing measurement, artificial calibration hydrogen fuel cell, can be avoided and make not in time because measuring and demarcating
The problem of declining at the performance of hydrogen fuel cell improves vehicle operation efficiency, reduces specific fuel consumption, reduces vehicle to realize
Operating cost and the purpose for reducing vehicle maintenance cost.
With reference to Fig. 5, a kind of structural block diagram of the calibration system of power-efficient point provided in an embodiment of the present invention, institute are shown
Stating calibration unit 305 includes:
Power-efficient point determining module 3051 obtains the newest power-efficient point P for calculating using formula (2),
Wherein,For hydrogen flowing quantity,For hydrogen calorific value, η is the peak efficiency, and the hydrogen flowing quantity is by the hydrogen
The quality Δ m of consumption is obtained divided by the runing time.The step that particular content is disclosed referring to embodiments of the present invention Fig. 1
The corresponding content of S105.
In embodiments of the present invention, by acquiring the current operating conditions parameter of automobile, the hydrogen of hydrogen fuel cell is calculated
Quality and rate of consumption of hydrogen are consumed, judges whether the power-efficient point of the previous calibration of hydrogen fuel cell migrates, if so, reminding weight
New nominal power high-efficiency point simultaneously determines newest power-efficient point, and it is fixed to click through rower to the power-efficient of hydrogen fuel cell.It is not required to
The new power-efficient point for wanting artificial Timing measurement, artificial calibration hydrogen fuel cell, can be avoided and make not in time because measuring and demarcating
The problem of declining at the performance of hydrogen fuel cell improves vehicle operation efficiency, reduces specific fuel consumption, reduces vehicle to realize
Operating cost and the purpose for reducing vehicle maintenance cost.
With reference to Fig. 6, a kind of structural block diagram of the calibration system of power-efficient point provided in an embodiment of the present invention, institute are shown
State calibration system further include:
Verification unit 306, the difference between peak efficiency and the preceding peak efficiency once obtained for judging currently to obtain
Within a preset range whether value, indicate to verify the instruction information passed through, if it is not, then existing if so, showing on automobile instrument panel
It shows that instruction verifies unsanctioned instruction information on automobile instrument panel, and sets preceding primary for the newest power-efficient point
The power-efficient point being calculated.
In embodiments of the present invention, by acquiring the current operating conditions parameter of automobile, the hydrogen of hydrogen fuel cell is calculated
Quality and rate of consumption of hydrogen are consumed, judges whether the power-efficient point of the previous calibration of hydrogen fuel cell migrates, if so, reminding weight
New nominal power high-efficiency point simultaneously determines newest power-efficient point, and it is fixed to click through rower to the power-efficient of hydrogen fuel cell.It is not required to
The new power-efficient point for wanting artificial Timing measurement, artificial calibration hydrogen fuel cell, can be avoided and make not in time because measuring and demarcating
The problem of declining at the performance of hydrogen fuel cell improves vehicle operation efficiency, reduces specific fuel consumption, reduces vehicle to realize
Operating cost and the purpose for reducing vehicle maintenance cost.
With reference to Fig. 7, a kind of structural block diagram of the calibration system of power-efficient point provided in an embodiment of the present invention, institute are shown
State calibration system further include:
Recording unit 307, for when detect plus hydrogen complete signal when, record current hydrogen pressure value, present hydrogen bottle temperature,
The remaining capacity SOC and current driving mileage of current power battery.
Preferably, the recording unit 307 is also used to record the newest power-efficient point.
In conclusion the embodiment of the present invention provides the scaling method and system of a kind of power-efficient point, it is applied to hydrogen fuel
Battery car, this method comprises: when detecting plus when hydrogen commencing signal, obtaining the current operating conditions parameter of automobile.Based on working as
Preceding hydrogen pressure value and present hydrogen bottle temperature calculate hydrogen consumption quality.Disappeared based on current driving mileage, electric quantity change value and hydrogen
Quality is consumed, rate of consumption of hydrogen is calculated.If currently the difference of the peak efficiency of hydrogen fuel cell and calibration efficiency is outside preset range,
And the difference of rate of consumption of hydrogen and calibration consumption rate is outside preset range, it is determined that the power of the previous calibration of hydrogen fuel cell
High-efficiency point migration, reminds and re-scales power-efficient point.Based on peak efficiency, the quality of hydrogen consumption and runing time, determine
It is fixed to click through rower to the power-efficient of hydrogen fuel cell for newest power-efficient point.In scheme provided by the invention, by adopting
The current operating conditions parameter for collecting automobile, calculates the hydrogen consumption quality and rate of consumption of hydrogen of hydrogen fuel cell, judges hydrogen fuel
Whether the power-efficient point of the previous calibration of battery migrates, and re-scales power-efficient point if so, reminding and determines newest function
It is fixed to click through rower to the power-efficient of hydrogen fuel cell for rate high-efficiency point.By above-mentioned scaling method, does not need artificial timing and survey
The new power-efficient point of amount, artificial calibration hydrogen fuel cell, can be avoided because of hydrogen fuel cell caused by measuring and demarcating not in time
Performance decline the problem of, improve vehicle operation efficiency to realize, reduce specific fuel consumption, reduce vehicle operating cost and drop
The purpose of low vehicle maintenance cost.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system or
For system embodiment, since it is substantially similar to the method embodiment, so describing fairly simple, related place is referring to method
The part of embodiment illustrates.System and system embodiment described above is only schematical, wherein the conduct
The unit of separate part description may or may not be physically separated, component shown as a unit can be or
Person may not be physical unit, it can and it is in one place, or may be distributed over multiple network units.It can root
According to actual need that some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.Ordinary skill
Personnel can understand and implement without creative efforts.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of scaling method of power-efficient point, which is characterized in that be applied to hydrogen cell automobile, which comprises
When detecting plus when hydrogen commencing signal, obtain the current operating conditions parameter of automobile, the current operating conditions parameter packet
Include current driving mileage Li, the electric quantity change value of power battery, current hydrogen before and after external charge power supply every time in preset time period
Pressure value Pi, present hydrogen bottle temperature TiWith the runing time of hydrogen fuel cell in the preset time period, the preset time period is
Primary plus hydrogen completes signal to detection when the period between front-end hydrogenation commencing signal before detecting；
Based on the current hydrogen pressure value PiWith present hydrogen bottle temperature Ti, useCalculate hydrogen consumption
Quality Δ m, wherein Pi-1And Ti-1Primary plus hydrogen completes the hydrogen pressure value and hydrogen cylinder temperature measured after signal before respectively detecting
Angle value, V are hydrogen cylinder volume, and M is the molal weight of hydrogen, and R is gas constant；
Based on the current driving mileage Li, electric quantity change value and hydrogen consumption quality Δ m, calculate rate of consumption of hydrogen；
If the peak efficiency of current hydrogen fuel cell and the difference of calibration efficiency are outside preset range, and the rate of consumption of hydrogen
Difference with calibration consumption rate is outside preset range, it is determined that the power-efficient point of the previous calibration of the hydrogen fuel cell moves
It moves, reminds and re-scale power-efficient point；
Based on the peak efficiency, the quality Δ m of hydrogen consumption and runing time, newest power-efficient point is determined, to described
It is fixed that the power-efficient of hydrogen fuel cell clicks through rower.
2. the method according to claim 1, wherein described be based on the current driving mileage Li, electric quantity change value
With the quality Δ m of hydrogen consumption, rate of consumption of hydrogen is calculated, comprising:
Use Δ L=Li-Li-1The mileage travelled changing value Δ L is calculated, wherein Li-1To detect that preceding primary plus hydrogen is complete
At the mileage travelled measured after signal；
It usesThe rate of consumption of hydrogen λ is calculated, wherein LΔSOCFor external charge mileage, the external charge
Mileage and the electric quantity change value have default corresponding relationship.
3. the method according to claim 1, wherein described based on the peak efficiency, the quality of hydrogen consumption
Δ m and runing time determine newest power-efficient point, comprising:
It usesIt calculates and obtains the newest power-efficient point P, whereinFor hydrogen flowing quantity,For hydrogen calorific value, η is the peak efficiency, and the hydrogen flowing quantity is by the quality Δ m of the hydrogen consumption divided by described
Runing time obtains.
4. the method according to claim 1, wherein further include:
When detecting plus hydrogen completes signal, it is electric to record current hydrogen pressure value, present hydrogen bottle temperature, the residue of current power battery
Measure SOC and current driving mileage.
5. the method according to claim 1, wherein it is described the hydrogen fuel cell is demarcated after, also
Include:
Within a preset range whether the difference between peak efficiency and the preceding peak efficiency once obtained that judgement currently obtains；
If so, showing the instruction information that instruction verification passes through on automobile instrument panel；
If it is not, then show that instruction verifies unsanctioned instruction information on automobile instrument panel, and by the newest power-efficient
The power-efficient point that point is once calculated before being set as.
6. the method according to claim 1, wherein it is described the hydrogen fuel cell is demarcated after, also
Include:
Record the newest power-efficient point.
7. a kind of calibration system of power-efficient point, which is characterized in that it is applied to hydrogen cell automobile, the system comprises:
Acquiring unit, for when detecting plus when hydrogen commencing signal, obtain the current operating conditions parameter of automobile, the current fortune
Row state parameter includes current driving mileage Li, the electricity of power battery becomes before and after external charge power supply every time in preset time period
Change value, current hydrogen pressure value Pi, present hydrogen bottle temperature TiIt is described with the runing time of hydrogen fuel cell in the preset time period
Preset time period is that primary plus hydrogen completes signal to detection when the period between front-end hydrogenation commencing signal before detecting；
Quality calculation unit, for being based on the current hydrogen pressure value PiWith present hydrogen bottle temperature Ti, use
Calculate the quality Δ m of hydrogen consumption, wherein Pi-1And Ti-1Primary plus hydrogen completes the hydrogen pressure measured after signal before respectively detecting
Value and hydrogen cylinder temperature value, V are hydrogen cylinder volume, and M is the molal weight of hydrogen, and R is gas constant；
Consumption rate computing unit, for being based on the current driving mileage Li, electric quantity change value and hydrogen consumption quality Δ m, meter
Calculate rate of consumption of hydrogen；
Determination unit, if for the peak efficiency of current hydrogen fuel cell and the difference of calibration efficiency outside preset range, and
The difference of the rate of consumption of hydrogen and calibration consumption rate is outside preset range, it is determined that the previous calibration of the hydrogen fuel cell
The migration of power-efficient point, reminds and re-scales power-efficient point；
It demarcates unit and determines newest power for quality Δ m and runing time based on the peak efficiency, hydrogen consumption
It is fixed to click through rower to the power-efficient of the hydrogen fuel cell for high-efficiency point.
8. system according to claim 7, which is characterized in that the consumption rate computing unit includes:
Mileage calculation module, for using Δ L=Li-Li-1The mileage travelled changing value Δ L is calculated, wherein Li-1For inspection
Primary plus hydrogen completes the mileage travelled measured after signal before measuring；
Consumption rate computing module, for usingThe rate of consumption of hydrogen λ is calculated, wherein LΔSOCIt is filled to be external
Electric mileage, the external charge mileage and the electric quantity change value have default corresponding relationship.
9. system according to claim 7, which is characterized in that the calibration unit includes:
Power-efficient point determining module, for usingIt calculates and obtains the newest power-efficient point P,
Wherein,For hydrogen flowing quantity,For hydrogen calorific value, η is the peak efficiency, and the hydrogen flowing quantity is by the hydrogen
The quality Δ m of consumption is obtained divided by the runing time.
10. system according to claim 7, which is characterized in that the system also includes:
Verification unit, the difference between peak efficiency and the preceding peak efficiency once obtained for judging currently to obtain whether
In preset range, if so, the instruction information that instruction verification passes through is shown on automobile instrument panel, if it is not, then in automobile instrument
It shows that instruction verifies unsanctioned instruction information on disk, and is once calculated before setting the newest power-efficient point to
Power-efficient point.
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