CN114312489B - Fuel cell engine power control method - Google Patents
Fuel cell engine power control method Download PDFInfo
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- CN114312489B CN114312489B CN202011060177.2A CN202011060177A CN114312489B CN 114312489 B CN114312489 B CN 114312489B CN 202011060177 A CN202011060177 A CN 202011060177A CN 114312489 B CN114312489 B CN 114312489B
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- 239000000446 fuel Substances 0.000 title claims abstract description 122
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000010248 power generation Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides a fuel cell engine power control method, which comprises the steps of setting a power cell state of charge interval; calibrating rated power duty ratio corresponding to each power battery charge state interval; calculating average power duty ratio corresponding to each power battery charge state interval according to the rated power duty ratio; obtaining average output power of the fuel cell within the first N seconds; calculating the target power of the current fuel cell according to a battery charge state interval in which the current charge state of the power cell is, the average power within N seconds before the fuel cell and the rated power of the fuel cell; setting a target power interval of the current fuel cell according to the target power of the fuel cell; the fuel cell output power is controlled within the target power interval. The invention has the advantages that: the output power of the fuel cell can be controlled according to the state of the power cell and the change trend of the power demand of the whole vehicle, and the dynamic property of the fuel cell vehicle is optimized.
Description
Technical Field
The invention relates to the field of fuel cell vehicles, in particular to a power control method of a fuel cell engine.
Background
The hydrogen fuel cell is a power generation device for directly converting chemical energy generated by the reaction of hydrogen and oxygen into electric energy through electrochemical reaction, has the advantages of high power generation efficiency, small environmental pollution and the like, and is widely applied to the field of automobiles. A fuel cell is a power generation device that directly converts chemical energy present in fuel and oxidant into electrical energy. Unlike conventional batteries, however, fuel cells do not have the ability to store electrical energy, and the electrical energy generated thereby needs to be stored immediately or using conventional power cells, such as lithium batteries. Due to the characteristics of the fuel cell, the fuel cell vehicle generally adopts a power cell and a fuel cell to be matched as a power source of the whole vehicle at present, and the power cell and the fuel cell are matched with each other to drive the whole vehicle to operate.
The power output capability of the power cell is greatly affected by the state of charge of the power cell, so that the existing fuel cell engine power control method generally dynamically adjusts the power output of the fuel cell according to the state of charge (SOC) of the power cell, so that the SOC of the power cell is maintained at a target value. Another existing fuel cell engine power control method is to make the fuel cell fix the output power according to the state of charge of the power cell.
The disadvantage of the prior art fuel cell engine power control method described above is that the fuel cell engine power control strategy is overly dependent on the power cell and limited by the pull-up slope of the fuel cell system. The load gradient limit of the fuel cell system refers to the limit of the load gradient of the fuel cell Boner rule by the fuel cell engine power control method in order to prolong the service life of the fuel cell. Therefore, the existing fuel cell engine power control method cannot timely respond to the sudden increase of the power demand of the whole vehicle, and reduces the running dynamic property of the whole vehicle.
In view of the foregoing, there is a need for a fuel cell engine power control method that overcomes the shortcomings of the prior art.
Disclosure of Invention
The present invention aims to provide a fuel cell engine power control method which overcomes the drawbacks of the prior art. The invention aims at achieving the following technical scheme.
One embodiment of the present invention provides a fuel cell engine power control method, wherein the fuel cell engine power control method includes the steps of:
step 1: setting a power battery charge state interval SOC1 and SOC2 … SOCn;
step 2: calibrating rated power duty ratios a1 and a2 … an corresponding to the charge state intervals SOC1 and SOC2 … SOCn of the power batteries;
step 3: calculating average power duty ratios A1 and A2 … An corresponding to the charge state intervals of the power batteries according to the rated power duty ratios A1 and A2 … An;
step 4: obtaining the average output power Pv of the fuel cell in the first N seconds of the current moment;
step 5: calculating the target power P of the current fuel cell according to a battery charge state interval in which the current charge state of the power cell is, the average power Pv of the fuel cell in the first N seconds of the current moment and the rated power Pr of the fuel cell;
step 6: setting a target power interval of the current fuel cell to be P-Pa to P+Pb according to the target power P of the fuel cell, wherein Pa and Pb are power values calibrated in advance according to a battery charge state interval in which the current charge state of the power cell is, the capacity of the power cell and the charge and discharge rate of the power cell;
step 7: the fuel cell output power is controlled within the range of the target power interval P-Pa to p+pb.
The fuel cell engine power control method according to any one of the above embodiments of the present invention, wherein the step 7: controlling the fuel cell output power in the range of the target power interval P-Pa to p+pb includes:
step 701: adjusting the output power of the fuel cell to the target power P of the current fuel cell;
step 702: and correcting the output power of the fuel cell in real time within the range from the target power interval P-Pa to P+Pb according to the required power of the whole vehicle.
The fuel cell engine power control method provided according to any one of the above embodiments of the present invention, wherein the step 3: average power duty ratios A1, A2 … An corresponding to the respective power battery state of charge intervals are calculated from the rated power duty ratios A1, A2 … An, where a1=100% -A1, a2=100% -a2 … an=100% -An.
The fuel cell engine power control method provided according to any one of the above embodiments of the present invention, wherein the step 4: obtaining the average power Pv of the fuel cell over the first N seconds of the current time includes:
step 401: obtaining average output current Iv and average output voltage Uv of the fuel cell in the first N seconds of the current moment;
step 402: the average power Pv of the fuel cell in the first N seconds of the present moment is calculated from the average output current Iv and the average output voltage Uv.
The fuel cell engine power control method provided according to any one of the above embodiments of the present invention, wherein the step 5: calculating the target power P of the current fuel cell according to the battery charge state interval in which the current charge state of the power cell is, the average power Pv of the fuel cell in the first N seconds of the current moment and the rated power Pr of the fuel cell comprises:
step 501: obtaining a corresponding rated power duty ratio a and an average power duty ratio A according to a battery charge state interval in which the current charge state of the power battery is located;
step 502: and calculating the target power P of the current fuel cell according to the rated power duty ratio a, the average power duty ratio A, the average power Pv of the fuel cell in the first N seconds of the current moment and the rated power Pr of the fuel cell, wherein a calculation formula is P=Pr+Pv+A.
The fuel cell engine power control method has the advantages that: the output power of the fuel cell can be controlled according to the state of the power cell and the change trend of the power demand of the whole vehicle at the same time, so that the output power of the fuel cell accords with the state of charge of the current power cell and the change of the power demand of the current whole vehicle at the same time; by setting the target power representing the required power of the whole vehicle, the situation that the output power of the fuel cell system cannot be corresponding in time when the required power of the whole vehicle is rapidly increased is avoided, and the dynamic property of the fuel cell vehicle is optimized.
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The present disclosure will become more readily understood with reference to the accompanying drawings. As will be readily appreciated by those skilled in the art: the drawings are only for illustrating the technical scheme of the present invention and are not intended to limit the scope of the present invention. In the figure:
fig. 1 shows a flowchart of a fuel cell engine power control method according to an embodiment of the invention.
Detailed Description
Fig. 1 and the following description depict alternative embodiments of the invention to teach those skilled in the art how to make and reproduce the invention. In order to teach the technical solution of the present invention, some conventional aspects have been simplified or omitted. Those skilled in the art will appreciate variations or alternatives derived from these embodiments that fall within the scope of the invention. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the invention. Thus, the invention is not limited to the following alternative embodiments, but only by the claims and their equivalents.
Fig. 1 shows a flowchart of a fuel cell engine power control method according to an embodiment of the invention. As shown in fig. 1, the fuel cell engine power control method includes the steps of:
step 1: setting a power battery charge state interval SOC1 and SOC2 … SOCn;
step 2: calibrating rated power duty ratios a1 and a2 … an corresponding to the charge state intervals SOC1 and SOC2 … SOCn of the power batteries;
step 3: calculating average power duty ratios A1 and A2 … An corresponding to the charge state intervals of the power batteries according to the rated power duty ratios A1 and A2 … An;
step 4: obtaining the average output power Pv of the fuel cell in the first N seconds of the current moment;
step 5: calculating the target power P of the current fuel cell according to a battery charge state interval in which the current charge state of the power cell is, the average power Pv of the fuel cell in the first N seconds of the current moment and the rated power Pr of the fuel cell;
step 6: setting a target power interval of the current fuel cell to be P-Pa to P+Pb according to the target power P of the fuel cell, wherein Pa and Pb are power values calibrated in advance according to a battery charge state interval in which the current charge state of the power cell is, the capacity of the power cell and the charge and discharge rate of the power cell;
step 7: the fuel cell output power is controlled within the range of the target power interval P-Pa to p+pb.
The fuel cell engine power control method according to any one of the above embodiments of the present invention, wherein the step 7: controlling the fuel cell output power in the range of the target power interval P-Pa to p+pb includes:
step 701: adjusting the output power of the fuel cell to the target power P of the current fuel cell;
step 702: and correcting the output power of the fuel cell in real time within the range from the target power interval P-Pa to P+Pb according to the required power of the whole vehicle.
The fuel cell engine power control method provided according to any one of the above embodiments of the present invention, wherein the step 3: average power duty ratios A1, A2 … An corresponding to the respective power battery state of charge intervals are calculated from the rated power duty ratios A1, A2 … An, where a1=100% -A1, a2=100% -a2 … an=100% -An.
The fuel cell engine power control method provided according to any one of the above embodiments of the present invention, wherein the step 4: obtaining the average power Pv of the fuel cell over the first N seconds of the current time includes:
step 401: obtaining average output current Iv and average output voltage Uv of the fuel cell in the first N seconds of the current moment; the average output current Iv and the average output voltage Uv are obtained by calculation according to the actual current and the actual voltage output by the electric fuel cell within N seconds before the current moment;
step 402: the average power Pv of the fuel cell in the first N seconds of the present moment is calculated from the average output current Iv and the average output voltage Uv.
The fuel cell engine power control method provided according to any one of the above embodiments of the present invention, wherein the step 5: calculating the target power P of the current fuel cell according to the battery charge state interval in which the current charge state of the power cell is, the average power Pv of the fuel cell in the first N seconds of the current moment and the rated power Pr of the fuel cell comprises:
step 501: obtaining a corresponding rated power duty ratio a and an average power duty ratio A according to a battery charge state interval in which the current charge state of the power battery is located;
step 502: and calculating the target power P of the current fuel cell according to the rated power duty ratio a, the average power duty ratio A, the average power Pv of the fuel cell in the first N seconds of the current moment and the rated power Pr of the fuel cell, wherein a calculation formula is P=Pr+Pv+A.
The fuel cell engine power control method has the advantages that: the output power of the fuel cell can be controlled according to the state of the power cell and the change trend of the power demand of the whole vehicle at the same time, so that the output power of the fuel cell accords with the state of charge of the current power cell and the change of the power demand of the current whole vehicle at the same time; by setting the target power representing the required power of the whole vehicle, the situation that the output power of the fuel cell system cannot be corresponding in time when the required power of the whole vehicle is rapidly increased is avoided, and the dynamic property of the fuel cell vehicle is optimized.
It will of course be realised that while the foregoing has been given by way of illustrative example of this invention, such and other modifications and variations thereto as would be apparent to persons skilled in the art are deemed to fall within the broad scope and ambit of this invention as is herein set forth. Thus, although the invention has been described with reference to preferred embodiments, it is not intended to be limited thereby to the novel features but, on the contrary, it is intended to cover various modifications and equivalent arrangements included within the broad scope of the foregoing disclosure, and the appended claims.
Claims (3)
1. A fuel cell engine power control method, characterized by comprising the steps of:
step 1: setting a power battery charge state interval SOC1 and SOC2 … SOCn;
step 2: calibrating rated power duty ratios a1 and a2 … an corresponding to the charge state intervals SOC1 and SOC2 … SOCn of the power batteries;
step 3: calculating average power duty ratios A1 and A2 … An corresponding to the charge state intervals of the power batteries according to the rated power duty ratios A1 and A2 … An;
step 4: obtaining the average power Pv of the fuel cell in the first N seconds of the current moment; comprising the following steps:
step 401: obtaining average output current Iv and average output voltage Uv of the fuel cell in the first N seconds of the current moment;
step 402: calculating average power Pv of the fuel cell in the first N seconds of the current moment according to the average output current Iv and the average output voltage Uv;
step 5: calculating the target power P of the current fuel cell according to a battery charge state interval in which the current charge state of the power cell is, the average power Pv of the fuel cell in the first N seconds of the current moment and the rated power Pr of the fuel cell;
step 6: setting a target power interval of the current fuel cell to be P-Pa to P+Pb according to the target power P of the fuel cell, wherein Pa and Pb are power values calibrated in advance according to a battery charge state interval in which the current charge state of the power cell is, the capacity of the power cell and the charge and discharge rate of the power cell;
step 7: controlling the output power of the fuel cell within the range of the target power interval P-Pa to P+Pb;
wherein, the step 5: calculating the target power P of the current fuel cell according to the battery charge state interval in which the current charge state of the power cell is, the average power Pv of the fuel cell in the first N seconds of the current moment and the rated power Pr of the fuel cell comprises:
step 501: obtaining a corresponding rated power duty ratio a and an average power duty ratio A according to a battery charge state interval in which the current charge state of the power battery is located;
step 502: and calculating the target power P of the current fuel cell according to the rated power duty ratio a, the average power duty ratio A, the average power Pv of the fuel cell in the first N seconds of the current moment and the rated power Pr of the fuel cell, wherein a calculation formula is P=Pr+Pv+A.
2. The maximum output power control method of a fuel cell according to claim 1, characterized in that said step 7: controlling the fuel cell output power in the range of the target power interval P-Pa to p+pb includes:
step 701: adjusting the output power of the fuel cell to the target power P of the current fuel cell;
step 702: and correcting the output power of the fuel cell in real time within the range from the target power interval P-Pa to P+Pb according to the required power of the whole vehicle.
3. The maximum output power control method of a fuel cell according to claim 2, wherein said step 3: average power duty ratios A1, A2 … An corresponding to the respective power battery state of charge intervals are calculated from the rated power duty ratios A1, A2 … An, where a1=100% -A1, a2=100% -a2 … an=100% -An.
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| CN114889499B (en) * | 2022-05-18 | 2024-03-26 | 中汽创智科技有限公司 | Control method and device for fuel cell-lithium battery hybrid power system |
| CN116022035B (en) * | 2023-01-17 | 2024-04-05 | 宇通客车股份有限公司 | Power system of fuel cell heavy truck, energy management method and device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109532566A (en) * | 2018-12-24 | 2019-03-29 | 青岛理工大学 | Fuel cell power system and power cell charge state control method |
| CN110182071A (en) * | 2019-05-10 | 2019-08-30 | 中国第一汽车股份有限公司 | A kind of power follower type fuel cell vehicle energy management control method |
| CN110194065A (en) * | 2019-05-29 | 2019-09-03 | 中国第一汽车股份有限公司 | Vehicle energy control method, device, vehicle and the storage medium of vehicle |
| CN110281817A (en) * | 2019-06-04 | 2019-09-27 | 一汽解放汽车有限公司 | A kind of energy control method of fuel battery engines |
| CN110303946A (en) * | 2018-03-12 | 2019-10-08 | 郑州宇通客车股份有限公司 | A kind of control method and device of fuel cell car |
| CN111152691A (en) * | 2020-01-10 | 2020-05-15 | 风氢扬科技(杭州)有限公司 | Power control method, device and system, vehicle control unit and storage medium |
| CN111572411A (en) * | 2020-04-22 | 2020-08-25 | 郑州宇通客车股份有限公司 | Power system of fuel cell vehicle, energy control method and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040009370A (en) * | 2002-07-23 | 2004-01-31 | 현대자동차주식회사 | Method of controlling output power of fuel cell for fuel cell hybrid electric vehicle |
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- 2020-09-30 CN CN202011060177.2A patent/CN114312489B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110303946A (en) * | 2018-03-12 | 2019-10-08 | 郑州宇通客车股份有限公司 | A kind of control method and device of fuel cell car |
| CN109532566A (en) * | 2018-12-24 | 2019-03-29 | 青岛理工大学 | Fuel cell power system and power cell charge state control method |
| CN110182071A (en) * | 2019-05-10 | 2019-08-30 | 中国第一汽车股份有限公司 | A kind of power follower type fuel cell vehicle energy management control method |
| CN110194065A (en) * | 2019-05-29 | 2019-09-03 | 中国第一汽车股份有限公司 | Vehicle energy control method, device, vehicle and the storage medium of vehicle |
| CN110281817A (en) * | 2019-06-04 | 2019-09-27 | 一汽解放汽车有限公司 | A kind of energy control method of fuel battery engines |
| CN111152691A (en) * | 2020-01-10 | 2020-05-15 | 风氢扬科技(杭州)有限公司 | Power control method, device and system, vehicle control unit and storage medium |
| CN111572411A (en) * | 2020-04-22 | 2020-08-25 | 郑州宇通客车股份有限公司 | Power system of fuel cell vehicle, energy control method and device |
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