CN113335137A - Control method of fuel cell system capable of recycling energy - Google Patents
Control method of fuel cell system capable of recycling energy Download PDFInfo
- Publication number
- CN113335137A CN113335137A CN202110475835.2A CN202110475835A CN113335137A CN 113335137 A CN113335137 A CN 113335137A CN 202110475835 A CN202110475835 A CN 202110475835A CN 113335137 A CN113335137 A CN 113335137A
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- CN
- China
- Prior art keywords
- fuel cell
- energy
- cell system
- control method
- heater ptc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004064 recycling Methods 0.000 title abstract description 4
- 238000011084 recovery Methods 0.000 claims description 14
- 239000001257 hydrogen Substances 0.000 claims description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 4
- 239000002826 coolant Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
Images
Classifications
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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
- B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
-
- 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
- B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
- B60L58/32—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for controlling the temperature of fuel cells, e.g. by controlling the electric load
- B60L58/34—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for controlling the temperature of fuel cells, e.g. by controlling the electric load by heating
-
- 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
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/24—Electrodynamic brake systems for vehicles in general with additional mechanical or electromagnetic braking
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel Cell (AREA)
Abstract
The invention belongs to the technical field of fuel cell control, and discloses a control method of a fuel cell system capable of recycling energy. The electric energy generated by the fuel cell automobile during braking is generally recovered by a power battery so as to save the energy consumption of the whole automobile. However, when the whole vehicle runs on a long downhill, the SOC of the power battery is often full. The invention can recover energy through the fuel battery system component heater PTC and the air compressor when the energy of the whole vehicle is recovered, thereby saving the energy consumption of the whole vehicle.
Description
Technical Field
The invention belongs to a control method of a fuel cell system, and particularly relates to a control method of a fuel cell system capable of recycling energy.
Background
The fuel cell is a power generation device using hydrogen as fuel, and is mostly applied to the field of automobiles at present to provide kinetic energy for the automobiles. The electric energy generated by the fuel cell vehicle during braking is generally recovered by a power battery. However, when the whole vehicle is in a long downhill state, the SOC of the power battery is often in a high level, so that the whole vehicle must be braked by mechanical braking, energy loss is caused, and the hydrogen utilization rate of the fuel battery is reduced.
Disclosure of Invention
In view of the above, the present invention provides a method for controlling a fuel cell system capable of recovering energy, so as to improve the above problems.
The invention adopts the following scheme: a control method of a fuel cell system capable of recovering energy, in which not only energy can be supplied but also energy can be recovered, is provided.
Preferably, when the fuel cell automobile brakes, the energy is recovered by the power battery preferentially, and when the SOC of the power battery is too high, the SOC generally exceeds a certain limit value, namely 60-90%, preferably 80%, and the energy is recovered by the fuel cell system.
Preferably, the heater PTC is prioritized for energy recovery when the fuel cell system power is below a certain value, i.e. 0-10kW, preferably 3kW, and the stack temperature is below a certain value, i.e. 50-90 ℃, preferably 60 ℃.
Preferably, when the fuel cell system recovers energy through the heater PTC, the water pump is operated to make the heating loop liquid flow so as not to overheat the heater.
Preferably, when the fuel cell system performs energy recovery by the heater PTC, the fuel cell system is in an idle state, and the temperature inside the fuel cell can be raised by heating the coolant by the heater PTC.
Preferably, when the fuel cell system does not satisfy the heater PTC on condition, i.e., the fuel cell system power is above a certain value, preferably 3kW, or the stack temperature is above a certain value, preferably 60 ℃, energy recovery is performed by operating the air compressor. At this time, the intake valve and the back pressure valve are closed, and only the bypass valve is opened, so that the hydrogen concentration in the tail gas is reduced.
Preferably, the fuel cell system performs energy recovery preferentially through a heater PTC and an air compressor; and other power consumption parts, such as a water pump and a hydrogen pump.
In summary, the control method of the fuel cell system capable of recovering energy provided by the invention can increase the recovered energy when the fuel cell vehicle brakes and reduce the hydrogen consumption. Meanwhile, when the recovered energy is used for the heater PTC, the temperature of the fuel cell stack can be kept in a proper range and can be started at any time; when the recovered energy is used for the air compressor, the tail gas purging can be enhanced, and the tail hydrogen discharge concentration is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic diagram of the energy flow of a fuel cell vehicle power system according to an embodiment of the present invention.
Fig. 2 is a schematic view of a fuel cell system according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of the control logic for a recoverable energy fuel cell system of an embodiment of the present invention.
Detailed Description
In order to make 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 described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, 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 obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 3, the present invention provides a method for controlling a fuel cell system capable of recovering energy. In particular, the control method realizes the following steps:
in the embodiment, particularly, when the fuel cell automobile brakes, the energy is recovered by the power battery preferentially, and when the SOC of the power battery is higher than 80% and the fuel cell system is in an idle state, the energy is recovered by the fuel cell system.
In the present embodiment, in particular, when the fuel cell system power is below a certain value P0, preferably 3kW, and the stack temperature is below a certain value T0, preferably 60 ℃, the heater PTC is prioritized for energy recovery.
In this embodiment, particularly, when the fuel cell system recovers energy by the heater PTC, the water pump is operated to flow the heating circuit liquid so as not to overheat the heater.
In the present embodiment, particularly, when the fuel cell system performs energy recovery by the heater PTC, the coolant can be heated by the heater PTC to keep the temperature inside the fuel cell from decreasing;
in the present embodiment, in particular, when the fuel cell system does not satisfy the heater PTC on condition, i.e., the fuel cell system power is higher than a certain value P0, preferably 3kW, or the stack temperature is higher than a certain value T0, preferably 60 ℃, the energy recovery is performed by operating the air compressor. At this time, the intake valve and the back pressure valve are closed, and only the bypass valve is opened, so that the hydrogen concentration in the tail gas is reduced.
In the present embodiment, in particular, the fuel cell system preferentially performs energy recovery by the heater PTC and the air compressor; and other power consumption parts, such as a water pump and a hydrogen pump.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Claims (8)
1. A method for controlling a fuel cell system capable of recovering energy, wherein the fuel cell system not only supplies energy but also recovers energy in a power system.
2. The control method according to claim 1, characterized in that energy is recovered by the power battery preferentially when the whole vehicle is braked, and energy is recovered by the fuel cell system only when the SOC of the power battery is too high.
3. The control method according to claim 1, wherein the fuel cell system performs energy recovery preferably by a heater PTC, an air compressor; and other power consumption parts, such as a water pump and a hydrogen pump.
4. The control method according to claim 1, wherein when the power of the fuel cell system is lower than a certain value and the temperature of the stack is lower than a certain value, the energy recovery is preferentially performed by the heater PTC.
5. A control method as claimed in claim 4 wherein, in the recovery of energy by the heater PTC, the heating circuit liquid is caused to flow by operating the water pump so as not to overheat the heater.
6. The control method according to claim 4, wherein the fuel cell system is in an idle state when energy recovery is performed by the heater PTC, and the temperature inside the fuel cell is raised by heating the coolant by the heater PTC.
7. The control method according to claim 1, wherein when the fuel cell system does not satisfy the heater PTC on condition, energy recovery is performed by operating an air compressor.
8. The control method according to claim 7, wherein when energy recovery is performed by the air compressor, the intake valve and the back pressure valve are closed, and only the bypass valve is opened to reduce the hydrogen concentration in the tail gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110475835.2A CN113335137A (en) | 2021-04-29 | 2021-04-29 | Control method of fuel cell system capable of recycling energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110475835.2A CN113335137A (en) | 2021-04-29 | 2021-04-29 | Control method of fuel cell system capable of recycling energy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113335137A true CN113335137A (en) | 2021-09-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110475835.2A Pending CN113335137A (en) | 2021-04-29 | 2021-04-29 | Control method of fuel cell system capable of recycling energy |
Country Status (1)
| Country | Link |
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| CN (1) | CN113335137A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109795326A (en) * | 2019-01-28 | 2019-05-24 | 汉腾汽车有限公司 | Hydrogen cell automobile brake energy recovering system and its method for recovering brake energy |
| US10449859B2 (en) * | 2016-05-11 | 2019-10-22 | Volkswagen Ag | Fuel cell vehicle having a plurality of selectable operating modes |
| CN110576751A (en) * | 2019-08-22 | 2019-12-17 | 武汉格罗夫氢能汽车有限公司 | fuel cell braking energy recovery system of hydrogen energy automobile |
| CN110605977A (en) * | 2019-09-04 | 2019-12-24 | 武汉格罗夫氢能汽车有限公司 | Fuel cell energy management system of hydrogen energy automobile |
| CN110861538A (en) * | 2019-11-01 | 2020-03-06 | 深圳国氢新能源科技有限公司 | Fuel cell automobile hybrid power control method and system |
| CN110957503A (en) * | 2019-11-29 | 2020-04-03 | 同济大学 | Air heating reflux system for low-temperature starting of fuel cell and control method |
| CN111409509A (en) * | 2020-04-04 | 2020-07-14 | 东风汽车集团有限公司 | Fuel cell system and idle speed control method thereof |
| CN211376826U (en) * | 2020-03-25 | 2020-08-28 | 北京亿华通科技股份有限公司 | All-in-one controller for fuel cell system and fuel cell system |
| CN111911254A (en) * | 2020-06-28 | 2020-11-10 | 东风汽车集团有限公司 | Energy recovery device of fuel cell system |
| CN111952638A (en) * | 2020-07-31 | 2020-11-17 | 同济大学 | Performance recovery system and method of vehicle fuel cell |
| CN112172612A (en) * | 2020-10-19 | 2021-01-05 | 中车资阳机车有限公司 | Control method for fuel cell and power cell hybrid power shunting locomotive |
-
2021
- 2021-04-29 CN CN202110475835.2A patent/CN113335137A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10449859B2 (en) * | 2016-05-11 | 2019-10-22 | Volkswagen Ag | Fuel cell vehicle having a plurality of selectable operating modes |
| CN109795326A (en) * | 2019-01-28 | 2019-05-24 | 汉腾汽车有限公司 | Hydrogen cell automobile brake energy recovering system and its method for recovering brake energy |
| CN110576751A (en) * | 2019-08-22 | 2019-12-17 | 武汉格罗夫氢能汽车有限公司 | fuel cell braking energy recovery system of hydrogen energy automobile |
| CN110605977A (en) * | 2019-09-04 | 2019-12-24 | 武汉格罗夫氢能汽车有限公司 | Fuel cell energy management system of hydrogen energy automobile |
| CN110861538A (en) * | 2019-11-01 | 2020-03-06 | 深圳国氢新能源科技有限公司 | Fuel cell automobile hybrid power control method and system |
| CN110957503A (en) * | 2019-11-29 | 2020-04-03 | 同济大学 | Air heating reflux system for low-temperature starting of fuel cell and control method |
| CN211376826U (en) * | 2020-03-25 | 2020-08-28 | 北京亿华通科技股份有限公司 | All-in-one controller for fuel cell system and fuel cell system |
| CN111409509A (en) * | 2020-04-04 | 2020-07-14 | 东风汽车集团有限公司 | Fuel cell system and idle speed control method thereof |
| CN111911254A (en) * | 2020-06-28 | 2020-11-10 | 东风汽车集团有限公司 | Energy recovery device of fuel cell system |
| CN111952638A (en) * | 2020-07-31 | 2020-11-17 | 同济大学 | Performance recovery system and method of vehicle fuel cell |
| CN112172612A (en) * | 2020-10-19 | 2021-01-05 | 中车资阳机车有限公司 | Control method for fuel cell and power cell hybrid power shunting locomotive |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210903 |
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| RJ01 | Rejection of invention patent application after publication |