CN113611902B - Method and device for calculating total residual energy of hydrogen fuel cell vehicle - Google Patents
Method and device for calculating total residual energy of hydrogen fuel cell vehicle Download PDFInfo
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Abstract
The invention discloses a method and a device for calculating total residual energy of a hydrogen fuel cell vehicle, wherein the method comprises the following steps: acquiring electric quantity data of the hydrogen fuel cell vehicle, acquiring working conditions of the hydrogen fuel cell vehicle according to the electric quantity data, acquiring corresponding hydrogen consumption data according to the working conditions of the hydrogen fuel cell vehicle, calculating to obtain first energy according to the hydrogen consumption data and the electric quantity data, and calculating to obtain total residual energy of the hydrogen fuel cell vehicle according to the first energy; wherein the first energy is the electrical energy converted by the unit of hydrogen. By adopting the embodiment of the invention, the accuracy of calculating the total residual energy of the hydrogen fuel cell vehicle can be improved.
Description
Technical Field
The invention relates to the technical field of hydrogen fuel cell vehicles, in particular to a method and a device for calculating total residual energy of a hydrogen fuel cell vehicle.
Background
At present, the energy of most domestic hydrogen fuel cell vehicles is displayed as two parts: the hydrogen residual quantity and the battery residual quantity are usually displayed in percentage values, and the total residual energy display value of the hydrogen residual quantity and the battery residual quantity is not available.
In daily life, although part of hydrogen fuel cell vehicles can calculate the total residual energy after converting the residual amount of hydrogen into electric energy, in the prior art, the hydrogen consumption of the hydrogen fuel cell vehicles under different working conditions is not considered, so that the calculation of the residual amount of hydrogen is not accurate enough, and finally the accuracy of calculating the total residual energy is not high.
Disclosure of Invention
The embodiment of the invention provides a method and a device for calculating the total residual energy of a hydrogen fuel cell vehicle, which improve the accuracy of calculating the total residual energy of the hydrogen fuel cell vehicle.
A first aspect of an embodiment of the present application provides a method for calculating total remaining energy of a hydrogen fuel cell vehicle, including:
acquiring electric quantity data of the hydrogen fuel cell vehicle;
acquiring the working condition of the hydrogen fuel cell vehicle according to the electric quantity data;
acquiring corresponding hydrogen consumption data according to the working condition of the hydrogen fuel cell vehicle, calculating to obtain first energy according to the hydrogen consumption data and the electric quantity data, and calculating to obtain total residual energy of the hydrogen fuel cell vehicle according to the first energy; wherein the first energy is the electric energy converted by the unit hydrogen.
In a possible implementation manner of the first aspect, the obtaining of the operating condition of the hydrogen fuel cell vehicle according to the electric quantity data specifically includes:
the electric quantity data comprises: a first current and a second current;
the working conditions of the hydrogen fuel cell vehicle comprise a first working condition, a second working condition and a third working condition;
when the first current is larger than or equal to a preset value, judging that the working condition of the hydrogen fuel cell vehicle is a first working condition and obtaining the working condition;
when the first current is smaller than a preset value and the negative value of the first current is smaller than the second current, judging that the working condition of the hydrogen fuel cell vehicle is the second working condition and obtaining the working condition;
and when the first current is smaller than the preset value and the negative value of the first current is larger than the second current, judging that the working condition of the hydrogen fuel cell vehicle is a third working condition and obtaining the third working condition.
In a possible implementation manner of the first aspect, the calculating the first energy according to the hydrogen consumption data and the electric quantity data is specifically:
the first energy comprises total unit hydrogen converted electricity and small unit hydrogen converted electricity;
when the hydrogen fuel cell vehicle runs, calculating to obtain the conversion electric quantity of hydrogen in a small unit according to the hydrogen consumption data and the electric quantity data;
and when the hydrogen fuel cell vehicle runs, updating the total unit hydrogen conversion electric quantity according to the unit hydrogen conversion electric quantity in small units.
In a possible implementation manner of the first aspect, the total remaining energy of the hydrogen fuel cell vehicle is calculated according to the first energy, and specifically:
the total remaining energy of the hydrogen fuel cell vehicle includes: a first total residual energy and a second total residual energy;
when a hydrogen fuel cell vehicle is started, acquiring initial hydrogen residual quantity and initial battery residual quantity, and calculating to obtain first total residual energy according to total unit hydrogen conversion electric quantity;
and when the hydrogen fuel cell vehicle runs, acquiring the real-time residual hydrogen and the real-time residual battery, and calculating to obtain a second total residual energy according to the converted electric quantity of hydrogen in a small unit.
In a possible implementation manner of the first aspect, the method further includes:
acquiring and displaying the total residual energy of the hydrogen fuel cell vehicle, specifically:
when the hydrogen fuel cell vehicle is started, acquiring and displaying first total residual energy;
and when the hydrogen fuel cell vehicle runs, acquiring a sub-mileage value, and when the sub-mileage value is a preset numerical value, acquiring and displaying second total residual energy.
A second aspect of the embodiments of the present application provides a device for calculating total remaining energy of a hydrogen fuel cell vehicle, including: the device comprises a first acquisition module, a second acquisition module and a calculation module;
the first acquisition module is used for acquiring electric quantity data of the hydrogen fuel cell vehicle;
the second acquisition module is used for acquiring the working condition of the hydrogen fuel cell vehicle according to the electric quantity data;
the calculation module is used for acquiring corresponding hydrogen consumption data according to the working condition of the hydrogen fuel cell vehicle, calculating to obtain first energy according to the hydrogen consumption data and the electric quantity data, and then calculating to obtain the total residual energy of the hydrogen fuel cell vehicle according to the first energy; wherein the first energy is the electric energy converted by the unit hydrogen.
In a possible implementation manner of the second aspect, the obtaining of the operating condition of the hydrogen fuel cell vehicle according to the electric quantity data specifically includes:
the electric quantity data comprises: a first current and a second current;
the working conditions of the hydrogen fuel cell vehicle comprise a first working condition, a second working condition and a third working condition;
when the first current is larger than or equal to a preset value, judging that the working condition of the hydrogen fuel cell vehicle is a first working condition and obtaining the working condition;
when the first current is smaller than a preset value and the negative value of the first current is smaller than the second current, judging that the working condition of the hydrogen fuel cell vehicle is the second working condition and obtaining the working condition;
and when the first current is smaller than the preset value and the negative value of the first current is larger than the second current, judging that the working condition of the hydrogen fuel cell vehicle is a third working condition and obtaining the third working condition.
In a possible implementation manner of the second aspect, the first energy is calculated according to the hydrogen consumption data and the electric quantity data, and specifically:
the first energy comprises total unit hydrogen converted electricity and small unit hydrogen converted electricity;
when the hydrogen fuel cell vehicle runs, calculating to obtain the conversion electric quantity of hydrogen in a small unit according to the hydrogen consumption data and the electric quantity data;
and when the hydrogen fuel cell vehicle runs, updating the total unit hydrogen conversion electric quantity according to the unit hydrogen conversion electric quantity in small units.
In a possible implementation manner of the second aspect, the total remaining energy of the hydrogen fuel cell vehicle is calculated according to the first energy, and specifically:
the total remaining energy of the hydrogen fuel cell vehicle includes: a first total residual energy and a second total residual energy;
when a hydrogen fuel cell vehicle is started, acquiring initial hydrogen residual quantity and initial battery residual quantity, and calculating to obtain first total residual energy according to total unit hydrogen conversion electric quantity;
and when the hydrogen fuel cell vehicle runs, acquiring the real-time residual hydrogen and the real-time residual battery, and calculating to obtain a second total residual energy according to the converted electric quantity of hydrogen in a small unit.
In a possible implementation manner of the second aspect, the method further includes:
acquiring and displaying the total residual energy of the hydrogen fuel cell vehicle, specifically:
when the hydrogen fuel cell vehicle is started, acquiring and displaying first total residual energy;
and when the hydrogen fuel cell vehicle runs, acquiring a sub-mileage value, and when the sub-mileage value is a preset numerical value, acquiring and displaying second total residual energy.
Compared with the prior art, the method and the device for calculating the total residual energy of the hydrogen fuel cell vehicle have the advantages that: the calculation method provided by the embodiment of the invention comprises the steps of firstly obtaining electric quantity data of the hydrogen fuel cell vehicle, then obtaining the working condition of the hydrogen fuel cell vehicle according to the electric quantity data, finally obtaining corresponding hydrogen consumption data according to the working condition of the hydrogen fuel cell vehicle, and after obtaining first energy according to the hydrogen consumption data and the electric quantity data, obtaining the total residual energy of the hydrogen fuel cell vehicle according to the first energy; wherein the first energy is the electric energy converted by the unit hydrogen. According to the embodiment of the invention, hydrogen consumption data under different working conditions are calculated, and the accuracy of calculating the residual amount of hydrogen is improved, so that the accuracy of calculating the electric energy converted by unit hydrogen is improved, and the accuracy of calculating the total residual energy of the hydrogen fuel cell vehicle is finally improved.
In addition, in the process of calculating the total residual energy of the hydrogen fuel cell vehicle, the discharging efficiency and the charging efficiency of the power cell pack are also considered, so that the problem of inaccurate calculation of the total residual energy caused by the fact that the difference of the conversion efficiency of the power cell pack under the charging and discharging working conditions is not considered in the prior art can be solved, and the accuracy of calculating the total residual energy is further improved.
Finally, the total residual energy of the hydrogen fuel cell vehicle calculated by the embodiment of the invention comprises a first residual total energy and a second residual total energy. When the hydrogen fuel cell vehicle is started, acquiring and displaying first total residual energy; and when the hydrogen fuel cell vehicle runs, acquiring a subtotal mileage value, and when the subtotal mileage value is a preset numerical value, acquiring and displaying second total remaining energy. When the hydrogen fuel cell vehicle is started, no new small unit hydrogen conversion electric quantity exists, so that the first total residual energy of the hydrogen fuel cell vehicle is calculated according to the total unit hydrogen conversion electric quantity obtained by accumulating the historical small unit hydrogen conversion electric quantity, the initial hydrogen residual quantity and the initial battery residual quantity, and whether the vehicle owner can successfully arrive at the destination or not can be roughly preliminarily judged according to the first total residual energy before the vehicle owner departs; when the hydrogen fuel cell vehicle runs, a new small unit hydrogen conversion electric quantity can be obtained, and then the second total residual energy of the hydrogen fuel cell vehicle is calculated according to the new small unit hydrogen conversion electric quantity, the real-time hydrogen residual quantity and the real-time battery residual quantity.
The two total residual energy calculation methods and the two total residual energy display methods are different, can be flexibly applied to diversified scenes, and can ensure the accuracy of the total residual energy no matter when the hydrogen fuel cell vehicle is just started or when the hydrogen fuel cell vehicle is running.
Drawings
Fig. 1 is a schematic flow chart of a method for calculating total remaining energy of a hydrogen fuel cell vehicle according to an embodiment of the present invention;
FIG. 2 is a schematic view illustrating the operation of a hydrogen fuel cell vehicle according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a device for calculating total remaining energy of a hydrogen fuel cell vehicle according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a flow chart of a method for calculating total remaining energy of a hydrogen fuel cell vehicle according to an embodiment of the present invention is schematically illustrated, including S101, S102, and S103, as follows:
s101: and acquiring the electric quantity data of the hydrogen fuel cell vehicle.
S102: and acquiring the working condition of the hydrogen fuel cell vehicle according to the electric quantity data.
In this embodiment, the obtaining the operating condition of the hydrogen fuel cell vehicle according to the electric quantity data specifically includes: the electric quantity data includes: a first current and a second current; the working conditions of the hydrogen fuel cell vehicle comprise a first working condition, a second working condition and a third working condition; when the first current is larger than or equal to a preset value, judging that the working condition of the hydrogen fuel cell vehicle is a first working condition and obtaining the working condition; when the first current is smaller than the preset value and the negative value of the first current is smaller than the second current, judging that the working condition of the hydrogen fuel cell vehicle is a second working condition and obtaining the working condition; and when the first current is smaller than the preset value and the negative value of the first current is larger than the second current, judging that the working condition of the hydrogen fuel cell vehicle is a third working condition and obtaining the third working condition.
In one embodiment, the first current and the second current are the power cell current (I _ BMS) and the hydrogen stack output current (I _ DCF), respectively, and the preset value is 0. Therefore, the working condition of the hydrogen fuel cell vehicle is obtained according to the electric quantity data, and the working condition is as follows:
when the I _ BMS is more than or equal to 0, the power battery of the hydrogen fuel cell vehicle does work outwards, and the power consumption of the electric appliance of the whole hydrogen fuel cell vehicle is judged, so that the working condition of the hydrogen fuel cell vehicle is the first working condition;
when I _ BMS <0 and-I _ BMS < I _ DCF, the power battery of the hydrogen fuel cell vehicle is charged, and the power consumption of the electric appliance of the whole hydrogen fuel cell vehicle is consumed, the working condition of the hydrogen fuel cell vehicle is judged to be a second working condition;
and when I _ BMS <0 and I _ BMS > I _ DCF, the power battery of the hydrogen fuel cell vehicle is charged, and the whole hydrogen fuel cell vehicle is in the power generation state of the energy recovery motor, and the working condition of the hydrogen fuel cell vehicle is judged to be a third working condition.
S103: and acquiring corresponding hydrogen consumption data according to the working condition of the hydrogen fuel cell vehicle, calculating to obtain first energy according to the hydrogen consumption data and the electric quantity data, and calculating to obtain the total residual energy of the hydrogen fuel cell vehicle according to the first energy.
Wherein the first energy is electrical energy converted per unit of hydrogen.
In this embodiment, the calculating the first energy according to the hydrogen consumption data and the electric quantity data specifically includes: the first energy comprises total unit hydrogen conversion electricity and small unit hydrogen conversion electricity; when the hydrogen fuel cell vehicle runs, calculating to obtain the conversion electric quantity of the hydrogen in the sub-unit according to the hydrogen consumption data and the electric quantity data; and when the hydrogen fuel cell vehicle finishes running, updating the total unit hydrogen conversion electric quantity according to the small unit hydrogen conversion electric quantity.
In this embodiment, the calculating the total remaining energy of the hydrogen fuel cell vehicle according to the first energy specifically includes: the total remaining energy of the hydrogen fuel cell vehicle includes: a first total residual energy and a second total residual energy; when the hydrogen fuel cell vehicle is started, acquiring initial hydrogen residual quantity and initial battery residual quantity, and calculating to obtain first total residual energy according to the total unit hydrogen conversion electric quantity; and when the hydrogen fuel cell vehicle runs, acquiring the real-time residual hydrogen and the real-time residual battery, and calculating to obtain the second total residual energy according to the converted electric quantity of the hydrogen of the small metering unit.
In this embodiment, the method further includes: acquiring and displaying the total residual energy of the hydrogen fuel cell vehicle, specifically: when the hydrogen fuel cell vehicle is started, acquiring and displaying the first total residual energy; and when the hydrogen fuel cell vehicle runs, acquiring a subtotal mileage value, and when the subtotal mileage value is a preset numerical value, acquiring and displaying the second total remaining energy.
To further explain the process of calculating the total remaining energy of the hydrogen fuel cell vehicle according to the operating conditions of the hydrogen fuel cell vehicle, please refer to fig. 2, and fig. 2 is an operating condition illustration schematic diagram of a hydrogen fuel cell vehicle according to an embodiment of the present invention.
Specifically, 1, 2, and 3 in fig. 2 represent a fuel cell, a power battery system, and a hydrogen fuel cell vehicle electrical appliance, respectively. For convenience of description, fig. 2 shows a current value (I _ car) and a voltage value (U _ car) of the hydrogen fuel cell vehicle electrical equipment.
After the working condition of the hydrogen fuel cell vehicle is obtained, corresponding hydrogen consumption data is obtained firstly, then first energy is obtained through calculation according to the hydrogen consumption data and the electric quantity data, and finally the total residual energy of the hydrogen fuel cell vehicle can be obtained through calculation according to the first energy.
Wherein the hydrogen consumption data comprises: the hydrogen consumption H2con1 when the working condition of the hydrogen fuel cell vehicle is the first working condition, the hydrogen consumption H2con2 when the working condition of the hydrogen fuel cell vehicle is the second working condition, and the hydrogen consumption H2con3 when the working condition of the hydrogen fuel cell vehicle is the third working condition.
The electric quantity data comprises: power cell data and hydrogen stack output data; wherein, the power battery data is the data of the power battery system, including: the method comprises the steps of measuring the current (I _ BMS) of a power battery, the voltage (U _ BMS) of the power battery, the charging efficiency (eta 1) of a power battery pack and the discharging efficiency (eta 2) of the power battery pack; the data of the output end of the hydrogen stack is the data of the fuel cell, and comprises the following steps: a hydrogen stack output terminal voltage (U _ DCF) and a hydrogen stack output terminal current (I _ DCF). The power battery current (I _ BMS) and the hydrogen stack output end current (I _ DCF) in the electric quantity data are respectively a first current and a second current required by the working condition judgment.
When the working condition of the hydrogen fuel cell vehicle is a first working condition, I _ BMS is more than or equal to 0, namely, a power battery of the hydrogen fuel cell vehicle does work outwards, and electric appliances of the whole hydrogen fuel cell vehicle consume power (I _ car is more than 0).
Recording the hydrogen consumption H2con1 when the working condition of the hydrogen fuel cell vehicle is the first working condition, and then calculating the electric energy Ele1 of hydrogen conversion under the first working condition according to the electric quantity data, which can be expressed by the following formula:
Ele1＝(∑U_DCF*I_DCF*T/η2)/1000/3600
wherein T is a preset period.
When the working condition of the hydrogen fuel cell vehicle is the second working condition, I _ BMS <0, and-I _ BMS < I _ DCF, namely the power battery of the hydrogen fuel cell vehicle is charged, and the electric appliances of the whole hydrogen fuel cell vehicle consume electricity (i.e. I _ car > 0).
Recording the hydrogen consumption H2con2 when the working condition of the hydrogen fuel cell vehicle is the second working condition, and then calculating the electric energy Ele2 converted from hydrogen under the second working condition according to the electric quantity data, which can be expressed by the following formula:
Ele2＝(η1*∑U_BMS*I_BMS*T+∑U_DCF*(I_DCF-I_BMS)*T/η2)
/1000/3600
wherein, T is a preset period.
And when the working condition of the hydrogen fuel cell vehicle is the third working condition, I _ BMS <0, and-I _ BMS > I _ DCF, namely the power battery of the hydrogen fuel cell vehicle is charged, and the whole hydrogen fuel cell vehicle is in the power generation state of the energy recovery motor (namely I _ car < 0).
Recording the hydrogen consumption H2con3 when the working condition of the hydrogen fuel cell vehicle is the third working condition, and then calculating the electric energy Ele converted from hydrogen under the third working condition according to the electric quantity data, which can be expressed by the following formula:
Ele3＝(η1*∑U_DCF*I_DCF*T)/1000/3600
wherein, T is a preset period.
And calculating first energy according to the hydrogen consumption and the electric energy converted from the hydrogen, wherein the first energy comprises the total unit of the electric quantity converted from the hydrogen and a small unit of the electric quantity converted from the hydrogen.
And when the hydrogen fuel cell vehicle runs, calculating to obtain the converted electricity quantity of the hydrogen in the sub-unit according to the hydrogen consumption data and the electricity quantity data. The method specifically comprises the following steps:
the hydrogen consumption data H2con1, H2con2 and H2con3 are obtained first, then Ele, ele and Ele calculated according to the electric quantity data are obtained, and then small unit hydrogen conversion electric quantity thisH2ele is calculated according to H2con1, H2con2, H2con3, ele1, ele and Ele, specifically:
thisH2ele＝(Ele1+Ele2+Ele3)/(H2con1+H2con2+H2con3)
from the time of the new hydrogen fuel cell vehicle being off-line, the total unit hydrogen conversion electricity amount totalH2ele is obtained by accumulating the small unit hydrogen conversion electricity amount thisH2ele obtained by calculation after the hydrogen fuel cell vehicle finishes running each time, so that the total unit hydrogen conversion electricity amount totalH2ele is updated according to the small unit hydrogen conversion electricity amount thisH2ele every time the hydrogen fuel cell vehicle finishes running.
Therefore, the total remaining energy of the hydrogen fuel cell vehicle is calculated according to the first energy, specifically:
the total remaining energy of the hydrogen fuel cell vehicle includes: a first total residual energy and a second total residual energy.
When the hydrogen fuel cell vehicle is started, acquiring initial hydrogen remaining quantity A1 and initial battery remaining quantity B1, and calculating to obtain the first total remaining energy Wrest1 according to total unit hydrogen converted electricity totalH2ele, which can be represented by the following formula:
Wrest1＝(A1*totalH2ele+B1)/(H2full*totalH2ele+Batteryfull)
A1＝H2rest1*H2full
B1＝SOC1*Batteryfull
wherein, H2rest1 is the percentage of the initial hydrogen residual, and H2full is the maximum hydrogen loading capacity; SOC1 is the percentage of the initial power battery residual quantity, and Battery full is the power battery capacity.
When the hydrogen fuel cell vehicle runs, acquiring the real-time hydrogen remaining amount A2 and the real-time battery remaining amount B2, and calculating to obtain the second total remaining energy Wrest2 according to the small unit hydrogen converted electricity amount thisH2ele, which can be represented by the following formula:
Wrest2＝(A2*thisH2ele+B2)/(H2full*totalH2ele+Batteryfull)
A2＝H2rest2*H2full
B2＝SOC2*Batteryfull
wherein H2rest2 is the real-time hydrogen residual percentage, and H2full is the maximum hydrogen loadable quantity; SOC2 is the real-time power battery residual quantity percentage, and Battery full is the power battery capacity.
Specifically, a specific flow of displaying the total remaining energy of the hydrogen fuel cell vehicle is as follows:
when the hydrogen fuel cell vehicle is started, acquiring and displaying first total residual energy; and when the hydrogen fuel cell vehicle runs, acquiring a subtotal mileage value, and when the subtotal mileage value is a preset numerical value, acquiring and displaying second total remaining energy. Preferably, the preset value is a positive integer multiple of 20 km.
When the hydrogen fuel cell vehicle is started, no new small unit hydrogen conversion electricity quantity thisH2ele exists, so that a first total residual energy Wrest1 of the hydrogen fuel cell vehicle is calculated according to a total unit hydrogen conversion electricity quantity totalH2ele obtained by accumulating historical small unit hydrogen conversion electricity quantities thisH2ele, an initial hydrogen residual quantity A1 and an initial battery residual quantity B1, and whether the vehicle can successfully arrive at a destination or not can be roughly preliminarily judged according to the first total residual energy Wrest1 before a vehicle owner departs; when the hydrogen fuel cell vehicle runs, a new small unit hydrogen conversion electricity amount thisH2ele can be obtained, then a second total residual energy Wrest2 of the hydrogen fuel cell vehicle is calculated according to the new small unit hydrogen conversion electricity amount thisH2ele, the real-time hydrogen residual amount A2 and the real-time battery residual amount B2, after the hydrogen fuel cell vehicle runs on the road, the driving behavior and the road condition of a vehicle owner have diversity and difficult predictability, so when the vehicle owner runs on the road but does not reach the destination, the total residual energy is updated in time, the real-time performance and the accuracy of the total residual energy are improved, and the vehicle owner can specifically judge that the vehicle owner can not smoothly reach the destination.
In addition, in order to fully consider the situation that no parameter is recorded when the new vehicle is off-line, an experience hundred kilometers electricity consumption initial value initcon is required to be set so as to calculate the remaining total energy Wrest 0 of the new vehicle when the new vehicle is on the road.
The method specifically comprises the following steps: acquiring a total mileage value Totaltrip, judging that the new vehicle is a new vehicle when the total mileage value Totaltrip is less than a preset mileage value, calculating the remaining total energy Wrest 0 of the new vehicle according to the electric quantity IniH2ele converted by the experience unit of hydrogen energy, and expressing the remaining total energy Wrest 0 by using the following formula:
Wrest0＝(H2rest0*H2full0*IniH2ele+SOC0*Batteryfull0)/(IniH2ele
*H2full0+Batteryfull0)
wherein H2rest0 is the percentage of the residual quantity of the hydrogen of the new vehicle, and H2full0 is the maximum loading quantity of the hydrogen of the new vehicle; SOC0 is the percentage of the residual quantity of the power battery of the new vehicle, and Battery full0 is the capacity of the power battery of the new vehicle.
When the total mileage value Totaltrip is greater than the preset mileage value, it is determined that the vehicle is not a new vehicle, and the remaining total energy of the non-new vehicle is the first remaining total energy Wrest1 and the second remaining total energy Wrest2, which can be obtained by calculating according to the above formula, and will not be described herein again.
To further explain the device for calculating the total remaining energy of the hydrogen fuel cell vehicle, please refer to fig. 3, where fig. 3 is a schematic structural diagram of the device for calculating the total remaining energy of the hydrogen fuel cell vehicle according to an embodiment of the present invention, including: a first acquisition module 301, a second acquisition module 302, and a calculation module 303.
The first obtaining module 301 is configured to obtain electric quantity data of the hydrogen fuel cell vehicle.
The second obtaining module 302 is configured to obtain a working condition of the hydrogen fuel cell vehicle according to the electric quantity data.
In this embodiment, the obtaining the operating condition of the hydrogen fuel cell vehicle according to the electric quantity data specifically includes:
the electric quantity data includes: a first current and a second current;
the working conditions of the hydrogen fuel cell vehicle comprise a first working condition, a second working condition and a third working condition;
when the first current is larger than or equal to a preset value, judging that the working condition of the hydrogen fuel cell vehicle is a first working condition and obtaining the working condition;
when the first current is smaller than the preset value and the negative value of the first current is smaller than the second current, judging that the working condition of the hydrogen fuel cell vehicle is a second working condition and obtaining the working condition;
and when the first current is smaller than the preset value and the negative value of the first current is larger than the second current, judging that the working condition of the hydrogen fuel cell vehicle is a third working condition and obtaining the third working condition.
The calculation module 303 is configured to obtain corresponding hydrogen consumption data according to a working condition of the hydrogen fuel cell vehicle, calculate to obtain first energy according to the hydrogen consumption data and the electric quantity data, and calculate to obtain total remaining energy of the hydrogen fuel cell vehicle according to the first energy; wherein the first energy is electrical energy converted per unit of hydrogen.
In this embodiment, the calculating the first energy according to the hydrogen consumption data and the electric quantity data specifically includes:
the first energy comprises total unit hydrogen conversion electricity and small unit hydrogen conversion electricity;
when the hydrogen fuel cell vehicle runs, calculating to obtain the converted electric quantity of the hydrogen in the sub-unit according to the hydrogen consumption data and the electric quantity data;
and when the hydrogen fuel cell vehicle finishes running, updating the total unit hydrogen conversion electric quantity according to the small unit hydrogen conversion electric quantity.
In this embodiment, the calculating the total remaining energy of the hydrogen fuel cell vehicle according to the first energy specifically includes:
the total remaining energy of the hydrogen fuel cell vehicle includes: a first total residual energy and a second total residual energy;
when the hydrogen fuel cell vehicle is started, acquiring initial hydrogen residual quantity and initial cell residual quantity, and calculating to obtain first total residual energy according to the total unit hydrogen conversion electric quantity;
and when the hydrogen fuel cell vehicle runs, acquiring the real-time residual hydrogen and the real-time residual battery, and calculating to obtain the second total residual energy according to the converted electric quantity of the hydrogen of the small metering unit.
In this embodiment, the calculation device for the total remaining energy of the hydrogen fuel cell vehicle further includes: a display module; the display module is used for acquiring and displaying the total residual energy of the hydrogen fuel cell vehicle, and specifically comprises the following steps: when the hydrogen fuel cell vehicle is started, acquiring and displaying the first total residual energy; and when the hydrogen fuel cell vehicle runs, acquiring a subtotal mileage value, and when the subtotal mileage value is a preset numerical value, acquiring and displaying the second total remaining energy.
According to the embodiment of the invention, firstly, electric quantity data of a hydrogen fuel cell vehicle is acquired through a first acquisition module 301, then, working conditions of the hydrogen fuel cell vehicle are acquired through a second acquisition module 302 according to the electric quantity data, finally, corresponding hydrogen consumption data are acquired through a calculation module 303 according to the working conditions of the hydrogen fuel cell vehicle, after first energy is calculated according to the hydrogen consumption data and the electric quantity data, total residual energy of the hydrogen fuel cell vehicle is calculated according to the first energy; wherein the first energy is the electric energy converted by the unit hydrogen. According to the embodiment of the invention, hydrogen consumption data under different working conditions are calculated, and the accuracy of calculating the residual amount of hydrogen is improved, so that the accuracy of calculating the electric energy converted by unit hydrogen is improved, and the accuracy of calculating the total residual energy of the hydrogen fuel cell vehicle is finally improved.
In addition, in the process of calculating the total residual energy of the hydrogen fuel cell vehicle, the discharging efficiency and the charging efficiency of the power cell pack are also considered, so that the problem of inaccurate calculation of the total residual energy caused by the fact that the difference of the conversion efficiency of the power cell pack under the charging and discharging working conditions is not considered in the prior art can be solved, and the accuracy of calculating the total residual energy is further improved.
Finally, the total residual energy of the hydrogen fuel cell vehicle calculated by the embodiment of the invention comprises a first residual total energy and a second residual total energy. When the hydrogen fuel cell vehicle is started, acquiring and displaying first total residual energy; and when the hydrogen fuel cell vehicle runs, acquiring a subtotal mileage value, and when the subtotal mileage value is a preset numerical value, acquiring and displaying second total remaining energy. When the hydrogen fuel cell vehicle is started, no new small unit hydrogen conversion electric quantity exists, so that the first total residual energy of the hydrogen fuel cell vehicle is calculated according to the total unit hydrogen conversion electric quantity obtained by accumulating the historical small unit hydrogen conversion electric quantity, the initial hydrogen residual quantity and the initial battery residual quantity, and whether the vehicle owner can successfully arrive at the destination or not can be roughly preliminarily judged according to the first total residual energy before the vehicle owner departs; when the hydrogen fuel cell vehicle runs, a new small unit hydrogen conversion electric quantity can be obtained, and then the second total residual energy of the hydrogen fuel cell vehicle is calculated according to the new small unit hydrogen conversion electric quantity, the real-time hydrogen residual quantity A2 and the real-time battery residual quantity.
The two total residual energy calculation methods and the two total residual energy display methods are different, can be flexibly applied to diversified scenes, and can ensure the accuracy of the total residual energy no matter when the hydrogen fuel cell vehicle is just started or when the hydrogen fuel cell vehicle is running.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (8)
1. A method for calculating total remaining energy of a hydrogen fuel cell vehicle, comprising:
acquiring electric quantity data of the hydrogen fuel cell vehicle;
acquiring the working condition of the hydrogen fuel cell vehicle according to the electric quantity data; the method comprises the following specific steps:
the electric quantity data includes: a first current and a second current; wherein the first current is a power battery current; the second current is the current at the output end of the hydrogen stack; the working conditions of the hydrogen fuel cell vehicle comprise a first working condition, a second working condition and a third working condition; when the first current is larger than or equal to a preset value, judging that the working condition of the hydrogen fuel cell vehicle is a first working condition and obtaining the working condition; when the first current is smaller than the preset value and the negative value of the first current is smaller than the second current, judging that the working condition of the hydrogen fuel cell vehicle is a second working condition and obtaining the working condition; when the first current is smaller than the preset value and the negative value of the first current is larger than the second current, judging that the working condition of the hydrogen fuel cell vehicle is a third working condition and obtaining the third working condition;
acquiring corresponding hydrogen consumption data according to the working condition of the hydrogen fuel cell vehicle, calculating to obtain first energy according to the hydrogen consumption data and the electric quantity data, and calculating to obtain total residual energy of the hydrogen fuel cell vehicle according to the first energy; wherein the first energy is electrical energy converted per unit of hydrogen.
2. The method for calculating the total remaining energy of the hydrogen fuel cell vehicle according to claim 1, wherein the first energy is calculated according to the hydrogen consumption data and the electric quantity data, and specifically comprises:
the first energy comprises total unit hydrogen conversion electricity and small unit hydrogen conversion electricity;
when the hydrogen fuel cell vehicle runs, calculating to obtain the converted electric quantity of the hydrogen in the sub-unit according to the hydrogen consumption data and the electric quantity data;
and when the hydrogen fuel cell vehicle finishes running, updating the total unit hydrogen conversion electric quantity according to the small unit hydrogen conversion electric quantity.
3. The method for calculating the total remaining energy of the hydrogen fuel cell vehicle according to claim 2, wherein the calculating the total remaining energy of the hydrogen fuel cell vehicle according to the first energy specifically includes:
the total remaining energy of the hydrogen fuel cell vehicle includes: a first total residual energy and a second total residual energy;
when the hydrogen fuel cell vehicle is started, acquiring initial hydrogen residual quantity and initial cell residual quantity, and calculating to obtain first total residual energy according to the total unit hydrogen conversion electric quantity;
and when the hydrogen fuel cell vehicle runs, acquiring the real-time residual hydrogen and the real-time residual battery, and calculating to obtain the second total residual energy according to the converted electric quantity of the hydrogen of the small metering unit.
4. The method for calculating the total remaining energy of the hydrogen fuel cell vehicle according to claim 3, further comprising:
acquiring and displaying the total residual energy of the hydrogen fuel cell vehicle, specifically:
when the hydrogen fuel cell vehicle is started, acquiring and displaying the first total residual energy;
and when the hydrogen fuel cell vehicle runs, acquiring a subtotal mileage value, and when the subtotal mileage value is a preset numerical value, acquiring and displaying the second total remaining energy.
5. A device for calculating a total remaining energy of a hydrogen fuel cell vehicle, comprising: the device comprises a first acquisition module, a second acquisition module and a calculation module;
the first acquisition module is used for acquiring electric quantity data of the hydrogen fuel cell vehicle;
the second acquisition module is used for acquiring the working condition of the hydrogen fuel cell vehicle according to the electric quantity data; the method specifically comprises the following steps:
the electric quantity data includes: a first current and a second current; wherein the first current is a power battery current; the second current is the current at the output end of the hydrogen stack; the working conditions of the hydrogen fuel cell vehicle comprise a first working condition, a second working condition and a third working condition; when the first current is larger than or equal to a preset value, judging that the working condition of the hydrogen fuel cell vehicle is a first working condition and obtaining the working condition; when the first current is smaller than the preset value and the negative value of the first current is smaller than the second current, judging that the working condition of the hydrogen fuel cell vehicle is a second working condition and obtaining the working condition; when the first current is smaller than the preset value and the negative value of the first current is larger than the second current, judging that the working condition of the hydrogen fuel cell vehicle is a third working condition and obtaining the third working condition;
the calculation module is used for acquiring corresponding hydrogen consumption data according to the working condition of the hydrogen fuel cell vehicle, calculating to obtain first energy according to the hydrogen consumption data and the electric quantity data, and then calculating to obtain total residual energy of the hydrogen fuel cell vehicle according to the first energy; wherein the first energy is electrical energy converted per unit of hydrogen.
6. The device for calculating the total remaining energy of the hydrogen fuel cell vehicle according to claim 5, wherein the first energy is calculated according to the hydrogen consumption data and the electricity data, and specifically comprises:
the first energy comprises total unit hydrogen conversion electricity and small unit hydrogen conversion electricity;
when the hydrogen fuel cell vehicle runs, calculating to obtain the conversion electric quantity of the hydrogen in the sub-unit according to the hydrogen consumption data and the electric quantity data;
and when the hydrogen fuel cell vehicle finishes running, updating the total unit hydrogen conversion electric quantity according to the small unit hydrogen conversion electric quantity.
7. The device for calculating the total remaining energy of the hydrogen fuel cell vehicle according to claim 6, wherein the total remaining energy of the hydrogen fuel cell vehicle is calculated according to the first energy, and specifically comprises:
the total remaining energy of the hydrogen fuel cell vehicle includes: a first total residual energy and a second total residual energy;
when the hydrogen fuel cell vehicle is started, acquiring initial hydrogen residual quantity and initial battery residual quantity, and calculating to obtain first total residual energy according to the total unit hydrogen conversion electric quantity;
and when the hydrogen fuel cell vehicle runs, acquiring the real-time residual hydrogen and the real-time residual battery, and calculating to obtain the second total residual energy according to the converted electric quantity of the hydrogen of the small metering unit.
8. The apparatus for calculating the total remaining energy of a hydrogen fuel cell vehicle according to claim 7, further comprising:
acquiring and displaying the total residual energy of the hydrogen fuel cell vehicle, specifically:
when the hydrogen fuel cell vehicle is started, acquiring and displaying the first total residual energy;
and when the hydrogen fuel cell vehicle runs, acquiring a subtotal mileage value, and when the subtotal mileage value is a preset numerical value, acquiring and displaying the second total remaining energy.
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