CN116373695A - Energy output control method and device for cloud-based fuel cell - Google Patents
Energy output control method and device for cloud-based fuel cell Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 48
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- 239000001257 hydrogen Substances 0.000 claims abstract description 139
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 139
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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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
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Abstract
The embodiment of the invention provides an energy output control method and device of a cloud-based fuel cell, and the method relates to the technical field of vehicle control, and comprises the following steps: determining a current health value of the hydrogen fuel cell according to the material value and the current output power by utilizing the cloud server, wherein the current health value is determined according to a preset lookup table or according to the following formula: hc=αp0/(w1+w2); when the current temperature is smaller than a first preset temperature value, the cloud server is utilized to send the current health value to the whole vehicle controller; the method comprises the steps that a whole vehicle controller is utilized to adjust expected output power of a user according to a current health value so as to obtain adjusted output power; and controlling the output power of the hydrogen fuel cell by the whole vehicle controller according to the adjusted output power so as to enable the output power of the hydrogen fuel cell to be matched with the expected output power. The method can realize high-precision control of the energy output of the fuel cell.
Description
Technical Field
The invention relates to the technical field of vehicle control, in particular to an energy output control method and device of a cloud-based fuel cell.
Background
A fuel cell is a power generation device that directly converts fuel chemical energy into electric energy. Compared with the traditional internal combustion engine, the fuel cell does not generate harmful gases such as carbon dioxide and the like, and is a clean and efficient energy supply mode. At present, the hydrogen fuel cell has the advantages of high energy conversion rate, low noise, zero emission and the like, can be widely applied to the fields of vehicles such as automobiles, airplanes, trains and the like, and can also be applied to fixed power stations.
However, the wide range of applications for fuel cells remains a bottleneck due to the high cost of the fuel cells themselves and the hydrogen gas. Improving the life and efficiency of fuel cells is a key factor in accelerating the development of fuel cells. Although fuel cell technology is difficult to break through significantly in a short period of time, energy management technology is one of the most effective and practical technical means for realizing fuel cell development.
In practical applications, fuel cells have the problem of inaccurate control of energy output, resulting in some waste of energy output. Specifically, the relationship between the energy of the fuel cell and the load is very complex and is affected by many factors such as the temperature, humidity and air pressure of the fuel cell, the load variation frequency of the load, and the like. Therefore, accurate control of fuel cell energy output on demand is of great importance.
Disclosure of Invention
Accordingly, the present invention is directed to a cloud-based energy output control method and apparatus for a fuel cell, which are based on analysis and processing of a cloud server, and implement high-precision control of energy output of the fuel cell by calculating a current health value of the hydrogen fuel cell and adjusting an expected output power of a user according to the current health value.
In order to achieve the above object, the technical scheme adopted by the embodiment of the invention is as follows:
in a first aspect, the invention provides an energy output control method based on a cloud fuel cell, which is applied to an energy output control device of the fuel cell, wherein the energy output control device comprises a cloud server, a whole vehicle controller and a detection device, the detection device and the whole vehicle controller are arranged on a fuel cell automobile, the detection device is connected with the whole vehicle controller, and the whole vehicle controller is in wireless connection with the cloud server. The method of the first aspect comprises the following steps: detecting a hydrogen fuel cell in the fuel cell automobile by using the detection device to obtain a material value input into the hydrogen fuel cell, and the current output power and the current temperature of the hydrogen fuel cell, wherein the material value comprises the current fuel gas flow and the current oxidation gas flow; the whole vehicle controller is used for sending the material value, the current output power and the current temperature to the cloud server; determining a current health value of the hydrogen fuel cell according to the material value and the current output power by using the cloud server, wherein the current health value is determined according to a preset lookup table or according to the following formula: hc=αp0/(w1+w2); wherein HC represents the current health value, P0 represents the current output power, W1 represents the current fuel gas flow, W2 represents the current oxidation gas flow, α is a first preset constant, and a preset lookup table includes a plurality of data sets, each of the data sets including an output power, a fuel gas flow, an oxidation gas flow, and a corresponding health value; when the current temperature is smaller than a first preset temperature value, the cloud server is utilized to send the current health value to the whole vehicle controller; adjusting the expected output power of the user according to the current health value by using the whole vehicle controller to obtain an adjusted output power; and controlling the output power of the hydrogen fuel cell by the whole vehicle controller according to the adjusted output power so as to enable the output power of the hydrogen fuel cell to be matched with the expected output power.
In a second aspect, the present invention provides an energy output control device of a cloud-based fuel cell (may also be referred to as an energy output control system of a cloud-based fuel cell). The device comprises a cloud server, a whole vehicle controller and a detection device, wherein the detection device and the whole vehicle controller are arranged on a fuel cell automobile, the detection device is connected with the whole vehicle controller, and the whole vehicle controller is in wireless connection with the cloud server; the detecting device is used for detecting a hydrogen fuel cell in the fuel cell automobile to obtain a material value input into the hydrogen fuel cell, and the current output power and the current temperature of the hydrogen fuel cell, wherein the material value comprises the current fuel gas flow and the current oxidation gas flow; the whole vehicle controller is used for sending the material value, the current output power and the current temperature to the cloud server; the cloud server is used for determining a current health value of the hydrogen fuel cell according to the material value and the current output power, and the current health value is determined according to a preset lookup table or according to the following formula: hc=αp0/(w1+w2); wherein HC represents the current health value, P0 represents the current output power, W1 represents the current fuel gas flow, W2 represents the current oxidation gas flow, α is a first preset constant, and a preset lookup table includes a plurality of data sets, each of the data sets including an output power, a fuel gas flow, an oxidation gas flow, and a corresponding health value; the cloud server is further configured to send the current health value to the vehicle controller when the current temperature is less than a first preset temperature value; the whole vehicle controller is also used for adjusting the expected output power of the user according to the current health value so as to obtain the adjusted output power; and the whole vehicle controller is further used for controlling the output power of the hydrogen fuel cell according to the adjusted output power so as to enable the output power of the hydrogen fuel cell to be matched with the expected output power.
In an optional embodiment of the invention, the adjusting the expected output power of the user according to the current health value to obtain the adjusted output power includes: acquiring a first initial health value by using the whole vehicle controller, wherein the first initial health value is determined according to the following formula: h01 =αp0/(w01+w02); wherein H01 represents the first initial health value, W01 represents the fuel gas flow rate of the hydrogen fuel cell before delivery when the output power is controlled to the current output power, and W02 represents the oxidized gas flow rate of the hydrogen fuel cell before delivery when the output power is controlled to the current output power; and adjusting the expected output power by using the whole vehicle controller according to the ratio of the current health value to the first initial health value so as to obtain the adjusted output power.
In an alternative embodiment of the invention, the regulated output power is calculated according to the following formula: pt=βpe/(HC/H01) +θ; wherein PT represents the adjusted output power, PE represents the desired output power, β is a second preset constant, and θ is a third preset constant.
In an optional embodiment of the present invention, when the current temperature is greater than or equal to the first preset temperature value, the detecting device is further configured to detect a hydrogen fuel cell in the fuel cell vehicle, so as to obtain a discharge initial voltage, an open-circuit voltage, and a discharge current of the hydrogen fuel cell when the output power is controlled to be the current output power; the whole vehicle controller is further used for sending the discharge initial voltage, the open circuit voltage and the discharge current to the cloud server; the cloud server is further configured to determine a first health adjustment value of the hydrogen fuel cell according to the discharge initial voltage, the open circuit voltage, and the discharge current, where the first health adjustment value is determined according to the following formula: hz1= (VD 0-VOP)/IC, where HZ1 represents the first health adjustment value, VD0 represents the discharge initial voltage, VOP represents the open circuit voltage, and IC represents the discharge current; the cloud server is further configured to adjust the current health value according to the first health adjustment value to obtain an adjusted first health value when the current temperature is greater than or equal to the first preset temperature value and less than a second preset temperature value, and send the adjusted first health value to the vehicle controller; the whole vehicle controller is further used for adjusting the expected output power of the user according to the adjusted first health value so as to obtain adjusted output power; and the whole vehicle controller is also used for controlling the output power of the hydrogen fuel cell according to the adjusted output power so as to enable the output power of the hydrogen fuel cell to be matched with the expected output power.
In an alternative embodiment of the present invention, the adjusted first health value is a mean value of the current health value and the first health adjustment value.
In an optional embodiment of the invention, the adjusting the expected output power of the user according to the adjusted first health value to obtain an adjusted output power includes: obtaining a second initial health value by using the whole vehicle controller, wherein the second initial health value is determined according to the following formula: h02 = (αp0/(w01+w02) + (VD 0' -VOP)/IC)/2; wherein H02 represents the second initial health value, W01 represents the fuel gas flow rate of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, W02 represents the oxidized gas flow rate of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, VD0 ' represents the discharge initial voltage of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, VOP ' represents the open circuit voltage of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, and IC ' represents the discharge current of the hydrogen fuel cell before shipment when the output power is controlled to the current output power; and adjusting the expected output power by using the whole vehicle controller according to the ratio of the adjusted first health value to the second initial health value so as to obtain the adjusted output power.
In an optional embodiment of the present invention, the cloud server is further configured to obtain, when the current temperature is greater than or equal to the second preset temperature value, a current water vapor emission amount of the hydrogen fuel cell when the output power is controlled to be the current output power; the cloud server is further configured to determine a second health adjustment value of the hydrogen fuel cell according to the current water vapor emission amount and the current output power, where the second health adjustment value is determined according to the following formula: hz2=p0/SDC, wherein HZ2 represents the second health adjustment value and SDC represents the current water vapor emission amount; the cloud server is further configured to adjust the current health value according to the first health adjustment value and the second health adjustment value to obtain an adjusted second health value, and send the adjusted second health value to the whole vehicle controller; the whole vehicle controller is further used for adjusting the expected output power of the user according to the adjusted second health value so as to obtain adjusted output power; and the whole vehicle controller is also used for controlling the output power of the hydrogen fuel cell according to the adjusted output power so as to enable the output power of the hydrogen fuel cell to be matched with the expected output power.
In an alternative embodiment of the present invention, the adjusted second health value is a mean of the current health value, the first health adjustment value and the second health adjustment value.
In an optional embodiment of the invention, the adjusting the expected output power of the user according to the adjusted second health value to obtain an adjusted output power includes: obtaining a third initial health value by using the whole vehicle controller, wherein the third initial health value is determined according to the following formula: h03 = (αp0/(w01+w02) + (VD 0 '-VOP)/IC' +p0/SD 0)/3; wherein H03 represents the third initial health value, W01 represents the fuel gas flow rate of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, W02 represents the oxidized gas flow rate of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, VD0 ' represents the initial discharge voltage of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, VOP ' represents the open-circuit voltage of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, IC ' represents the discharge current of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, SD0 represents the water vapor discharge rate of the hydrogen fuel cell before shipment when the output power is controlled to the current output power; and adjusting the expected output power by using the whole vehicle controller according to the ratio of the adjusted second health value to the third initial health value so as to obtain the adjusted output power.
The hydrogen fuel cell is aged due to electrode corrosion, catalyst polymerization, membrane degradation and the like during long-time use, and thus the control accuracy of the existing fuel cell energy output control technology is not high. Based on the embodiments provided in the above aspects, the aging degree of the hydrogen fuel cell is quantified by calculating the current health value of the hydrogen fuel cell, and the output power of the hydrogen fuel cell is controlled using the current health value so that the output power of the hydrogen fuel cell matches the desired output power of the user. Therefore, the method provided by the embodiment of the invention can realize high-precision control of the energy output of the fuel cell. Specifically, the method provided by the embodiment of the invention is based on analysis and processing of the cloud server, and realizes high-precision control of energy output of the fuel cell by calculating the current health value of the hydrogen fuel cell and adjusting the expected output power of the user according to the current health value.
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments of the present invention will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and should not be considered as limiting the scope, and other related drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a block diagram of an energy output control device of a fuel cell according to an embodiment of the present invention;
fig. 2 is a flow chart of a method for controlling energy output of a cloud-based fuel cell according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
In order to solve the above problems in the prior art: the hydrogen fuel cell is aged due to electrode corrosion, catalyst polymerization, membrane degradation and the like in the long-time use process, so that the control precision of the energy output control technology of the existing fuel cell is not high. The embodiment of the invention provides a technical scheme, which comprises an energy output control method and device of a cloud-based fuel cell. According to the scheme, based on analysis and processing of the cloud server, the high-precision control of the energy output of the fuel cell is realized by calculating the current health value of the hydrogen fuel cell and adjusting the expected output power of the user according to the current health value.
It should be noted that, the technical problems of the prior art solutions described above are all results obtained by the inventor after careful practical study, and therefore, the discovery process of the problems described above and the solutions provided by the embodiments of the present invention below for the problems described above should be all contributions of the inventor to the implementation of the present invention.
First, the energy output control device of the cloud-based fuel cell will be described below with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a block diagram of an energy output control device of a fuel cell according to an embodiment of the invention. Wherein, the energy output control device 100 includes: the cloud server 110, the whole vehicle controller 121 and the detection device 122, the detection device 122 and the whole vehicle controller 121 are arranged on the fuel cell automobile 120, the detection device 122 is connected with the whole vehicle controller 121, and the whole vehicle controller 121 is in wireless connection with the cloud server 110 (for example, through 4G, 5G network connection, satellite communication and other modes).
In an alternative embodiment, fuel cell vehicle 120 includes an unmanned vehicle or a manned vehicle, without limitation. The hydrogen fuel cell is mounted in the fuel cell vehicle 120.
In an alternative embodiment, the sensing device 122 may include sensors capable of sensing various operating parameters of the hydrogen fuel cell. Specifically, the detection device 122 includes, but is not limited to, the following sensors: hydrogen flow sensor, oxygen flow sensor, temperature sensor, power sensor, voltage sensor, current sensor and vapor sensor.
In an alternative embodiment, the vehicle controller 121 may be a micro control unit (Micro controller Unit, MCU) in the vehicle.
Further, an implementation of the energy output control method of the cloud-based fuel cell is given below. Referring to fig. 2, fig. 2 is a flow chart illustrating a method for controlling energy output of a cloud-based fuel cell according to an embodiment of the present invention.
The energy output control method of the cloud-based fuel cell may be applied to the energy output control apparatus 100 shown in fig. 1 described above. Specifically, the energy output control method of the cloud-based fuel cell may include the following steps S210 to S260, which are sequentially described below.
S210, detecting the hydrogen fuel cell in the fuel cell vehicle 120 by using the detecting device 122 to obtain a material value of the input hydrogen fuel cell, where the material value includes a current fuel gas flow and a current oxidation gas flow, and a current output power and a current temperature of the hydrogen fuel cell.
The fuel gas flow rate includes a hydrogen gas input amount of the hydrogen fuel cell, and the oxidation gas flow rate includes an oxygen gas input amount of the hydrogen fuel cell. Alternatively, the current output power, the current temperature, and the material values may be detected using hydrogen flow sensors, oxygen flow sensors, temperature sensors, and power sensors in the detection device 122.
S220, the whole vehicle controller 121 is utilized to send the material value, the current output power and the current temperature to the cloud server 110.
S230, determining a current health value of the hydrogen fuel cell according to the material value and the current output power by utilizing the cloud server 110, wherein the current health value is determined according to a preset lookup table or according to the following formula:
HC=αP0/(W1+W2) (equation 1)
Wherein HC represents a current health value, P0 represents a current output power, W1 represents a current fuel gas flow, W2 represents a current oxidation gas flow, alpha is a first preset constant, and the preset lookup table comprises a plurality of data sets, and each data set comprises the output power, the fuel gas flow, the oxidation gas flow and the corresponding health value.
Alternatively, the preset lookup table may be obtained by testing a large number of hydrogen fuel cells to collect health values of each hydrogen fuel cell under the conditions of multiple output powers, multiple fuel gas flows and multiple oxidation gas flows. That is, the health value in the preset lookup table may be an empirical value.
In one embodiment, the current health value may be determined only according to the formula 1.
S240, when the current temperature is smaller than the first preset temperature value, the cloud server 110 is utilized to send the current health value to the whole vehicle controller 121.
S250, the whole vehicle controller 121 is utilized to adjust the expected output power of the user according to the current health value so as to obtain the adjusted output power.
The desired output power of the user may be determined based on the magnitude of the accelerator pedal signal of the driver of the vehicle 120, among other things.
For example, when the current health value is lower than a standard value, the desired output power is increased to obtain an adjusted output power. In this way, after the current health value is used to calibrate the expected output power, the output power of the hydrogen fuel cell in S260 can be matched with the expected output power, so as to realize high-precision control of energy output of the fuel cell.
S260, controlling the output power of the hydrogen fuel cell by the whole vehicle controller 121 according to the adjusted output power so that the output power of the hydrogen fuel cell matches the desired output power.
It is understood that the adjustment manner of S260 may refer to the existing process of adjusting the output power of the hydrogen fuel cell according to a certain power requirement, which is not described herein.
It is understood that the hydrogen fuel cell may be degraded due to electrode corrosion, catalyst polymerization, membrane degradation, etc. during long-term use, and thus the control accuracy of the existing energy output control technology of the fuel cell is not high. In the steps S210 to S260, the aging degree of the hydrogen fuel cell is quantified by calculating the current health value of the hydrogen fuel cell, and the output power of the hydrogen fuel cell is controlled by using the current health value, so that the output power of the hydrogen fuel cell matches with the expected output power of the user. Therefore, the method provided by the embodiment of the invention can realize high-precision control of the energy output of the fuel cell. Specifically, the method provided by the embodiment of the invention can realize high-precision control of energy output of the fuel cell by calculating the current health value of the hydrogen fuel cell and adjusting the expected output power of the user according to the current health value based on analysis and processing of the cloud server.
In one embodiment, when the current temperature is greater than or equal to the first preset temperature value, the output power of the hydrogen fuel cell may also be controlled using S240-S260 described above, so that the output power of the hydrogen fuel cell matches the desired output power.
Since the same flow of hydrogen and oxygen is supplied to the hydrogen fuel cell of the same aging degree under different temperature conditions, the output power thereof is also affected. In order to solve the problem, the embodiment of the present invention also provides the following further method to further improve the control accuracy of the hydrogen fuel cell. The following describes the further method in detail with reference to specific examples:
1. and an energy output control process of the fuel cell when the current temperature is less than a first preset temperature value:
in one embodiment, please continue to refer to the method embodiment shown in fig. 2, S250, the whole vehicle controller 121 is utilized to adjust the desired output power of the user according to the current health value to obtain the adjusted output power, which may include the following steps 1.1 to 1.2:
step 1.1, a first initial health value is obtained by the vehicle controller 121, and the first initial health value is determined according to the following formula:
H01 =αp0/(w01+w02) (equation 2)
Where H01 represents a first initial health value, W01 represents a fuel gas flow rate when the output power of the hydrogen fuel cell before shipment is controlled to the current output power, and W02 represents an oxidation gas flow rate when the output power of the hydrogen fuel cell before shipment is controlled to the current output power.
Step 1.2, the desired output power is adjusted by the vehicle controller 121 according to the ratio of the current health value to the first initial health value, so as to obtain an adjusted output power.
Specifically, the regulated output power may be calculated according to the following formula:
pt=βpe/(HC/H01) +θ (formula 3)
Wherein PT represents the regulated output power, PE represents the desired output power, β is a second preset constant, and θ is a third preset constant.
2. And an energy output control process of the fuel cell when the current temperature is greater than or equal to the first preset temperature value and less than the second preset temperature value:
in one embodiment, please continue to refer to the method embodiment shown in fig. 2, when the current temperature is greater than or equal to the first preset temperature value, the energy output control method further includes the following steps 2.1-2.6:
in step 2.1, the hydrogen fuel cell in the fuel cell vehicle 120 is detected by the detecting device 122 to obtain the discharge initial voltage, the open-circuit voltage, and the discharge current of the hydrogen fuel cell when the output power is controlled to the current output power.
For example, the discharge initiation voltage, the open circuit voltage, and the discharge current are detected by a voltage sensor and a current sensor in the detection device 122.
Step 2.2, the vehicle controller 121 is utilized to send the discharge initial voltage, the open circuit voltage and the discharge current to the cloud server 110.
Step 2.3, determining, by the cloud server 110, a first health adjustment value of the hydrogen fuel cell according to the discharge initial voltage, the open-circuit voltage and the discharge current, where the first health adjustment value is determined according to the following formula:
HZ1= (VD 0-VOP)/IC (equation 4)
Where HZ1 represents a first health adjustment value, VD0 represents a discharge initial voltage, VOP represents an open circuit voltage, and IC represents a discharge current. The discharge initiation voltage may refer to: the hydrogen fuel cell is operated at the instant discharge voltage when the output power is controlled to the current output power and the connection load starts to operate. The open circuit voltage may refer to: the open circuit voltage of the hydrogen fuel cell when the output power is controlled to the present output power and no load is connected (not operating). The discharge current may refer to: the hydrogen fuel cell discharges current when the output power is controlled to the present output power and the connection load starts to operate.
Step 2.4, when the current temperature is greater than or equal to the first preset temperature value and less than the second preset temperature value, the cloud server 110 is utilized to adjust the current health value according to the first health adjustment value to obtain an adjusted first health value, and the adjusted first health value is sent to the vehicle controller 121.
In an alternative embodiment, the adjusted first health value is a mean of the current health value and the first health adjustment value. That is, the adjusted first health value= (hc+hz 1)/2.
Step 2.5, the vehicle controller 121 is utilized to adjust the desired output power of the user according to the adjusted first health value, so as to obtain the adjusted output power.
Specifically, step 2.5, adjusting the desired output power of the user by using the vehicle controller 121 according to the adjusted first health value to obtain the adjusted output power may include the following steps 2.51 to 2.52:
step 2.51, obtaining a second initial health value by using the vehicle controller 121, where the second initial health value is determined according to the following formula:
h02 = (αp0/(w01+w02) + (VD 0 '-VOP)/IC')/2 (formula 5)
Where H02 denotes a second initial health value, W01 denotes a fuel gas flow rate of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, W02 denotes an oxidation gas flow rate of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, VD0 ' denotes a discharge initial voltage of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, VOP ' denotes an open circuit voltage of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, and IC ' denotes a discharge current of the hydrogen fuel cell before shipment when the output power is controlled to the current output power.
Step 2.52, adjusting the desired output power by using the vehicle controller 121 according to the ratio of the adjusted first health value to the second initial health value, so as to obtain the adjusted output power.
This step 2.52 is implemented in a similar manner to the step 1.2 described above, and the execution principle can be referred to the step 1.2 described above.
For example, pt=βpe/(adjusted first health value/H02) +θ. Wherein PT represents the regulated output power, PE represents the desired output power, β is a second preset constant, and θ is a third preset constant.
Step 2.6, the output power of the hydrogen fuel cell is controlled by the vehicle controller 121 according to the adjusted output power, so that the output power of the hydrogen fuel cell matches the desired output power.
3. And an energy output control process of the fuel cell when the current temperature is greater than or equal to the second preset temperature value:
in the step 2.1 to 2.6, when the current temperature is greater than or equal to the second preset temperature value, the energy output control method further includes the following steps 3.1 to 3.5:
step 3.1, the cloud server 110 is utilized to obtain the current water vapor emission of the hydrogen fuel cell when the output power is controlled to be the current output power.
Specifically, the hydrogen fuel cell in the fuel cell vehicle 120 may be detected by the detecting device 122 to obtain the water vapor discharge amount of the hydrogen fuel cell when the output power is controlled to the current output power. And transmitting the water vapor discharge amount to the cloud server 110 by the vehicle controller 121.
Step 3.2, determining, by the cloud server 110, a second health adjustment value of the hydrogen fuel cell according to the current water vapor emission amount and the current output power, the second health adjustment value being determined according to the following formula:
HZ2=P0/SDC (equation 6)
Where HZ2 represents a second health adjustment value and SDC represents the current water vapor emission amount.
Step 3.3, the cloud server 110 is utilized to adjust the current health value according to the first health adjustment value and the second health adjustment value to obtain an adjusted second health value, and the adjusted second health value is sent to the vehicle controller 121.
In an alternative embodiment, the adjusted second health value is a mean of the current health value, the first health adjustment value, and the second health adjustment value. That is, the adjusted second health value= (hc+hz1+hz2)/3.
And 3.4, adjusting the expected output power of the user by using the whole vehicle controller 121 according to the adjusted second health value to obtain the adjusted output power.
Specifically, step 3.4 of adjusting the desired output power of the user by using the vehicle controller 121 according to the adjusted second health value to obtain the adjusted output power may include the following steps 3.41 to 3.42:
Step 3.41, obtaining a third initial health value by using the vehicle controller 121, where the third initial health value is determined according to the following formula:
h03 = (αp0/(w01+w02) + (VD 0 ' -VOP ')/IC ' +p0/SD 0)/3 (formula 7)
Where H03 denotes a third initial health value, W01 denotes a fuel gas flow rate of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, W02 denotes an oxidation gas flow rate of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, VD0 ' denotes a discharge initial voltage of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, VOP ' denotes an open circuit voltage of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, IC ' denotes a discharge current of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, and SD0 denotes a water vapor discharge rate of the hydrogen fuel cell before shipment when the output power is controlled to the current output power.
Step 3.42, adjusting the desired output power by using the vehicle controller 121 according to the ratio of the adjusted second health value to the third initial health value, so as to obtain the adjusted output power.
This step 3.42 is implemented in a similar manner to step 1.2 described above, and the execution principle can be referred to step 1.2 described above.
For example, pt=βpe/(second health value after adjustment/H03) +θ. Wherein PT represents the regulated output power, PE represents the desired output power, β is a second preset constant, and θ is a third preset constant.
And 3.5, controlling the output power of the hydrogen fuel cell by using the whole vehicle controller 121 according to the adjusted output power so as to enable the output power of the hydrogen fuel cell to be matched with the expected output power.
In one embodiment, the first preset temperature value is selected in a range of (20 ℃,40 ℃) and the second preset temperature value is selected in a range of (70 ℃,100 ℃). Specifically, the first preset temperature value is 31 ℃, and the second preset temperature value is 86 ℃.
It can be understood that in the steps 1.1 to 1.2, 2.1 to 2.6 and 3.1 to 3.5, the output power of the hydrogen fuel cell is controlled by setting and calculating different health values in different temperature sections, so that the control accuracy of the hydrogen fuel cell can be further improved.
Based on the above embodiments, the present invention further provides a computer readable storage medium having a computer program stored thereon, which when executed by a processor performs the steps of the energy output control method of a cloud-based fuel cell described above.
Specifically, the storage medium may be a general-purpose storage medium, such as a mobile magnetic disk, a hard disk, or the like, and when a computer program on the storage medium is executed, the method in the above embodiment can be executed, so as to solve the problem that the "the hydrogen fuel cell is aged due to electrode corrosion, catalyst polymerization, membrane degradation, and the like during long-time use, and thus the control accuracy of the existing energy output control technology of the fuel cell is not high". Therefore, an object of the present invention is to provide a method and an apparatus for controlling energy output of a cloud-based fuel cell, which are based on analysis and processing of a cloud server, and implement high-precision control of energy output of the fuel cell by calculating a current health value of a hydrogen fuel cell and adjusting an expected output power of a user according to the current health value.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.
Further, the units described as separate units may or may not be physically separate, and units displayed as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
Furthermore, functional modules in various embodiments of the present invention may be integrated together to form a single portion, or each module may exist alone, or two or more modules may be integrated to form a single portion.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The above description is only an example of the present invention and is not intended to limit the scope of the present invention, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The energy output control method based on the cloud fuel cell is characterized by being applied to an energy output control device of the fuel cell, wherein the energy output control device comprises a cloud server, a whole vehicle controller and a detection device, the detection device and the whole vehicle controller are arranged on a fuel cell automobile, the detection device is connected with the whole vehicle controller, and the whole vehicle controller is in wireless connection with the cloud server; the energy output control method comprises the following steps:
detecting a hydrogen fuel cell in the fuel cell automobile by using the detection device to obtain a material value input into the hydrogen fuel cell, and the current output power and the current temperature of the hydrogen fuel cell, wherein the material value comprises the current fuel gas flow and the current oxidation gas flow;
the whole vehicle controller is used for sending the material value, the current output power and the current temperature to the cloud server;
determining a current health value of the hydrogen fuel cell according to the material value and the current output power by using the cloud server, wherein the current health value is determined according to a preset lookup table or according to the following formula: hc=αp0/(w1+w2); wherein HC represents the current health value, P0 represents the current output power, W1 represents the current fuel gas flow, W2 represents the current oxidation gas flow, α is a first preset constant, and a preset lookup table includes a plurality of data sets, each of the data sets including an output power, a fuel gas flow, an oxidation gas flow, and a corresponding health value;
When the current temperature is smaller than a first preset temperature value, the cloud server is utilized to send the current health value to the whole vehicle controller;
adjusting the expected output power of the user according to the current health value by using the whole vehicle controller to obtain an adjusted output power; and
and controlling the output power of the hydrogen fuel cell by using the whole vehicle controller according to the adjusted output power so as to enable the output power of the hydrogen fuel cell to be matched with the expected output power.
2. The method for controlling energy output of a cloud-based fuel cell according to claim 1, wherein said adjusting, by the vehicle controller, the desired output power of the user according to the current health value to obtain the adjusted output power includes:
acquiring a first initial health value by using the whole vehicle controller, wherein the first initial health value is determined according to the following formula: h01 =αp0/(w01+w02);
wherein H01 represents the first initial health value, W01 represents the fuel gas flow rate of the hydrogen fuel cell before delivery when the output power is controlled to the current output power, and W02 represents the oxidized gas flow rate of the hydrogen fuel cell before delivery when the output power is controlled to the current output power;
And adjusting the expected output power by using the whole vehicle controller according to the ratio of the current health value to the first initial health value so as to obtain the adjusted output power.
3. The energy output control method of a cloud-based fuel cell according to claim 2, wherein the adjusted output power is calculated according to the following formula: pt=βpe/(HC/H01) +θ;
wherein PT represents the adjusted output power, PE represents the desired output power, β is a second preset constant, and θ is a third preset constant.
4. The energy output control method of a cloud-based fuel cell according to claim 1, characterized in that when the current temperature is greater than or equal to the first preset temperature value, the energy output control method further comprises:
detecting a hydrogen fuel cell in the fuel cell automobile by using the detection device to obtain a discharge initial voltage, an open-circuit voltage and a discharge current of the hydrogen fuel cell when the output power is controlled to be the current output power;
transmitting the discharge initial voltage, the open circuit voltage and the discharge current to the cloud server by using the whole vehicle controller;
Determining a first health adjustment value of the hydrogen fuel cell according to the discharge initial voltage, the open-circuit voltage and the discharge current by using the cloud server, wherein the first health adjustment value is determined according to the following formula: hz1= (VD 0-VOP)/IC,
wherein HZ1 represents the first health adjustment value, VD0 represents the discharge initial voltage, VOP represents the open circuit voltage, and IC represents the discharge current;
when the current temperature is greater than or equal to the first preset temperature value and less than a second preset temperature value, the cloud server is utilized to adjust the current health value according to the first health adjustment value so as to obtain an adjusted first health value, and the adjusted first health value is sent to the whole vehicle controller;
the whole vehicle controller is utilized to adjust the expected output power of the user according to the adjusted first health value so as to obtain adjusted output power; and
and controlling the output power of the hydrogen fuel cell by using the whole vehicle controller according to the adjusted output power so as to enable the output power of the hydrogen fuel cell to be matched with the expected output power.
5. The method of claim 4, wherein the adjusted first health value is a mean of the current health value and the first health adjustment value.
6. The method for controlling energy output of a cloud-based fuel cell according to claim 5, wherein said adjusting, by the vehicle controller, the desired output power of the user according to the adjusted first health value to obtain the adjusted output power, comprises:
obtaining a second initial health value by using the whole vehicle controller, wherein the second initial health value is determined according to the following formula: h02 = (αp0/(w01+w02) + (VD 0' -VOP)/IC)/2;
wherein H02 represents the second initial health value, W01 represents the fuel gas flow rate of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, W02 represents the oxidized gas flow rate of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, VD0 ' represents the discharge initial voltage of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, VOP ' represents the open circuit voltage of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, and IC ' represents the discharge current of the hydrogen fuel cell before shipment when the output power is controlled to the current output power;
And adjusting the expected output power by using the whole vehicle controller according to the ratio of the adjusted first health value to the second initial health value so as to obtain the adjusted output power.
7. The energy output control method of a cloud-based fuel cell of claim 4, wherein when said current temperature is greater than or equal to said second preset temperature value, said energy output control method further comprises:
acquiring the current water vapor emission amount of the hydrogen fuel cell when the output power is controlled to be the current output power by using the cloud server;
determining a second health adjustment value of the hydrogen fuel cell by the cloud server according to the current water vapor emission amount and the current output power, wherein the second health adjustment value is determined according to the following formula: hz2=p0/SDC,
wherein HZ2 represents the second health adjustment value and SDC represents the current water vapor emission amount;
the cloud server is utilized to adjust the current health value according to the first health adjustment value and the second health adjustment value to obtain an adjusted second health value, and the adjusted second health value is sent to the whole vehicle controller;
Adjusting the expected output power of the user by using the whole vehicle controller according to the adjusted second health value to obtain an adjusted output power; and
and controlling the output power of the hydrogen fuel cell by using the whole vehicle controller according to the adjusted output power so as to enable the output power of the hydrogen fuel cell to be matched with the expected output power.
8. The method of claim 7, wherein the adjusted second health value is a mean of the current health value, the first health adjustment value, and the second health adjustment value.
9. The method for controlling energy output of a cloud-based fuel cell according to claim 8, wherein adjusting, with the vehicle controller, the desired output power of the user according to the adjusted second health value to obtain an adjusted output power, comprises:
obtaining a third initial health value by using the whole vehicle controller, wherein the third initial health value is determined according to the following formula: h03 = (αp0/(w01+w02) + (VD 0 '-VOP)/IC' +p0/SD 0)/3;
wherein H03 represents the third initial health value, W01 represents the fuel gas flow rate of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, W02 represents the oxidized gas flow rate of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, VD0 ' represents the initial discharge voltage of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, VOP ' represents the open-circuit voltage of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, IC ' represents the discharge current of the hydrogen fuel cell before shipment when the output power is controlled to the current output power, SD0 represents the water vapor discharge rate of the hydrogen fuel cell before shipment when the output power is controlled to the current output power;
And adjusting the expected output power by using the whole vehicle controller according to the ratio of the adjusted second health value to the third initial health value so as to obtain the adjusted output power.
10. The energy output control device of the cloud-based fuel cell is characterized by comprising a cloud server, a whole vehicle controller and a detection device, wherein the detection device and the whole vehicle controller are arranged on a fuel cell automobile, the detection device is connected with the whole vehicle controller, and the whole vehicle controller is in wireless connection with the cloud server; wherein, the liquid crystal display device comprises a liquid crystal display device,
the detecting device is used for detecting the hydrogen fuel cell in the fuel cell automobile to obtain a material value input into the hydrogen fuel cell, and the current output power and the current temperature of the hydrogen fuel cell, wherein the material value comprises the current fuel gas flow and the current oxidation gas flow;
the whole vehicle controller is used for sending the material value, the current output power and the current temperature to the cloud server;
the cloud server is used for determining a current health value of the hydrogen fuel cell according to the material value and the current output power, and the current health value is determined according to a preset lookup table or according to the following formula: hc=αp0/(w1+w2); wherein HC represents the current health value, P0 represents the current output power, W1 represents the current fuel gas flow, W2 represents the current oxidation gas flow, α is a first preset constant, and a preset lookup table includes a plurality of data sets, each of the data sets including an output power, a fuel gas flow, an oxidation gas flow, and a corresponding health value;
The cloud server is further configured to send the current health value to the vehicle controller when the current temperature is less than a first preset temperature value;
the whole vehicle controller is also used for adjusting the expected output power of the user according to the current health value so as to obtain the adjusted output power; and
and the whole vehicle controller is also used for controlling the output power of the hydrogen fuel cell according to the adjusted output power so as to enable the output power of the hydrogen fuel cell to be matched with the expected output power.
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