CN207542327U - Hydrogen cell automobile high-pressure hydrogen storing pressure tank energy retracting device - Google Patents
Hydrogen cell automobile high-pressure hydrogen storing pressure tank energy retracting device Download PDFInfo
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- CN207542327U CN207542327U CN201720557257.6U CN201720557257U CN207542327U CN 207542327 U CN207542327 U CN 207542327U CN 201720557257 U CN201720557257 U CN 201720557257U CN 207542327 U CN207542327 U CN 207542327U
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- pressure
- hydrogen
- expansion
- expanding machine
- energy
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The utility model provides a kind of hydrogen cell automobile high-pressure hydrogen storing pressure tank energy retracting device, including：High pressure hydrogen tank (1) and pressure energy recovery system (2), the pressure energy recovery system (2) includes one or more levels expansion system, and every grade of expansion system includes an expanding machine (3) and a heat exchanger (4).High pressure hydrogen is flowed out from high pressure hydrogen tank (1), flows into expansion systems at different levels successively；In expansion systems at different levels, expanding machine (3) decrease temperature and pressure is first passed through, external output work, then inflow heat exchanger (4) heat absorption heating, improving its operating temperature makes its expansion process export more expansion works close to constant temperature process.The utility model is recycled the pressure energy in high pressure hydrogen tank by power energy recovery system (2), improves capacity usage ratio.
Description
Technical field
The present invention relates to hydrogen energy source energy recovery apparatus for vehicle, the pressure energy recycling dress of more particularly to a kind of high-pressure hydrogen storing tank
It puts.
Background technology
With the development of fuel cell technology, hydrogen cell automobile is increasingly becoming what world car manufacturer mutually researched and developed unexpectedly
Hot spot.Fuel of the hydrogen as fuel cell car needs to be stored in the car.Common hydrogen storage mode has high-pressure gaseous storage
Hydrogen, liquefaction hydrogen storage, hydride hydrogen-storing, activated carbon hydrogen storage, carbon-nanotube hydrogen sorption etc., the hydrogen storage mode of most common of which is high
State of calming the anger hydrogen storage.Since hydrogen is the gas of known density minimum in the world, need that it is compressed to meet running car
It is required that.External hydrogen storage pressure has reached 70Mpa, and domestic hydrogen storage pressure has developed to 35Mpa.The fuel of conventional fuel oil automobile need not
Compression can directly store in the car, and hydrogen cell automobile needs to store again after hydrogen is compressed, the process of compression hydrogen
It needs to consume a large amount of work(.The theoretical electrical efficiency of hydrogen fuel cell is practical due to there is polarization and Irreversible factor up to 83%
For electrical efficiency still up to 40%, but because compression hydrogen consumes big energy, the vehicle energy efficiency for making fuel cell is relatively low.It is practical
On, 1 kilogram of hydrogen theory produces electricl energy about 115MJ, and 1 kilogram of hydrogen is compressed to 70Mpa by atmospheric pressure needs to consume
The theoretical work(of 41MJ, compression hydrogen energy consumption account for fuel cell produces electricl energy 35%, greatly reduce the entirety of fuel-cell vehicle
Efficiency.In fact, the work done during compression that compression hydrogen is consumed does not disappear, but gas cylinder is stored in the form of pressure energy
In.But existing hydrogen cell automobile mesohigh hydrogen is depressured by throttle valve or injector, supply fuel electricity
The low pressure hydrogen that pond needs, the pressure energy that should be stored in gas cylinder in the process waste completely, cause the extreme of the energy
Waste.For this purpose, patent of the present invention proposes to use pressure energy recovery system in Hydrogen Fuel-cell Vehicles by the pressure in high pressure hydrogen tank
Power can recycle, and improve energy utilization efficiency.
As shown in Figure 1, it is found that reversible constant temperature process is done, expansion work is most, and reversible thermal insulation is swollen by expanding machine operation principle
Swollen acting is minimum, and reversible polytropic process therebetween, and increases with the reduction of Polytropic exponent n, so making process
It is the most advantageous close to constant temperature process.As shown in Fig. 2, in order to make real process expanding machine output expansion work as much as possible, often
By the way of multiple expansion resuperheat, classification is more, closer to constant temperature process, then can make more work(.In fact,
Classification is unsuitable too many, and otherwise machinery is complicated, and the irreversible losses such as mechanical loss and flow resistance increase therewith, and general most four
Grade.As shown in figure 3, during multiple expansion reheat in stage, when expander outlet temperature is T2, the concurrent heating of T2 is higher than using temperature
Mode, reheat temperature reach T1 more than T2, as seen from the figure, higher using reheat temperature, and it is more to be made work(, therefore, is pressing
In power energy recovery system, can intermediate concurrent heating further be carried out higher than the recirculated water of environment temperature using temperature, recycle more pressures
Power energy.
Invention content
It is an object of the present invention in view of the deficiencies of the prior art, provide a kind of pressure energy recycling dress of high pressure hydrogen tank
It puts, improves the vehicle energy utilization efficiency of hydrogen cell automobile.
The technical scheme is that a kind of hydrogen cell automobile high-pressure hydrogen storing pressure tank energy retracting device, including：It is high
Pressure hydrogen gas tank (1) and pressure energy recovery system (2), the pressure energy recovery system (2) include one or more levels expansion system, often
Grade expansion system includes an expanding machine (3) and a heat exchanger (4).High pressure hydrogen is flowed out from high pressure hydrogen tank (1), is flowed successively
Enter expansion systems at different levels；In expansion systems at different levels, expanding machine (3) decrease temperature and pressure is first passed through, then external output work is flowed into and changed
Hot device (4) heat absorption heating, improving its operating temperature makes its expansion process export more expansion works close to constant temperature process.
The expanding machine is axial-flow type expanding machine, radial-flow type expanding machine, diameter axial-flow type expanding machine, scroll expansion machine, spiral shell
Expander or piston expansion engine.Expanding machine plays the role of reducing Hydrogen Vapor Pressure, while recycled the pressure of high pressure hydrogen
Power energy, external output work, so as to compensate for the energy dissipation of conventional throttle valve decompression.
The origin of heat of heat patching device is in air or fuel cell cooling circulation water among the expansion system.Using sky
Gas forced convertion or free convection concurrent heating do not need to add pipeline, save interior space；Using cooling circulating water concurrent heating, no
Efficiently using for hydrogen fuel cell waste heat is only realized, and improves expander inlet temperature, makes the external amount of work of expanding machine
It further improves.
The expanding machine output work can directly drive automobile advance, air compressor can also be driven to work, can be with
It is further converted into electric energy to be stored in accumulator, the wasted works equipment such as interior compressor of air conditioner can also be driven, saved hydrogen combustion
Expect the energy consumption of battery car motor, be conducive to safe driving, be also the hybrid power providing method of Hydrogen Fuel-cell Vehicles.
The expansion system can be level-one, two-stage or three-level, can be according to the different demands of client and selection different designs
Pattern has a wide range of application, and can ensure that the reliable implementation of above-mentioned pressure energy recovery method, effectively improves Hydrogen Fuel-cell Vehicles energy profit
With rate.
Description of the drawings
Fig. 1 is that the P-V of expansion process schemes.
Fig. 2 is that the P-V of multiple expansion schemes.
Fig. 3 is that the P-V of multiple expansion resuperheat schemes.
Fig. 4 drives compressor map for expanding machine.
Fig. 5 is expanding machine drive transmission device figure.
Fig. 6 is expansion machine driving generator figure.
Fig. 7 supplies flow chart for hydrogen cell automobile.
Specific embodiment
Following case study on implementation is used to illustrate the present invention, but be not limited to the scope of the present invention.
Below in conjunction with the accompanying drawings and case study on implementation, the specific embodiment of the present invention is described in further detail.
Case study on implementation 1
As shown in figure 4, a kind of automobile-used high-pressure hydrogen storing pressure tank energy retracting device of hydrogen energy source, including：High pressure hydrogen tank (1),
Pressure energy recovery system (2), the pressure energy recovery system (2) include expanding machine (3) and heat exchanger (4), compressor (5).This
Case uses compound expansion system, and high pressure hydrogen is flowed out from high pressure hydrogen tank (1), flows into expansion systems at different levels successively；In level-one
In expansion system, first stage piston formula expanding machine (3) decrease temperature and pressure is first passed through, then external output work flows into level-one water-cooled and changes
Hot device (4) absorbs the heat of cooling water of fuel cell and realizes heating；Stage piston-type expanding machine (3) is flowed into again continues expansion drop
Then pressure externally acting flows into light breeze cold type heat exchanger (4) and absorbs atmospheric heat.
As shown in figure 4, using compound expansion system, this part work(amount can drive air compressor (5) to run, extra work(
Interior compressor of air conditioner can also be driven or charged for accumulator.Outdoor air needs to be compressed to certain pressure infeed fuel cell
Cathode, the driving force of conventional fuel cell automobile air compressor driven from motor, this scheme using expanding machine, raising
The stability of running car.
Case study on implementation 2
As shown in figure 5, a kind of automobile-used high-pressure hydrogen storing pressure tank energy retracting device of hydrogen energy source, including：High pressure hydrogen tank (1),
Pressure energy recovery system (2), the pressure energy recovery system (2) include expanding machine (3) and heat exchanger (4), transmission mechanism (6).
This case uses three-level expansion system, and high pressure hydrogen is flowed out from high pressure hydrogen tank (1), flows into expansion systems at different levels successively.One
In grade expansion system, hydrogen flows into level-one scroll expansion machine (3) decrease temperature and pressure, then it is air-cooled to flow into level-one for external output work
Formula heat exchanger (4) absorbs heat and realizes Wen Sheng；Two level scroll expansion machine (3) expansion decompression is flowed into again, is externally done work, is flowed into
Light breeze cold type heat exchanger (4) absorbs heat；It finally flows into scroll expansion machine (3) and expands decompression, externally do work, flow into three-level
Air-cooled heat exchanger (4) absorbs atmospheric heat.
As shown in figure 5, using three-level expansion system, expansion work can drive rear-wheel transmission mechanism or front wheel drive machine
Structure.
Case study on implementation 3
As shown in fig. 6, a kind of automobile-used high-pressure hydrogen storing pressure tank energy retracting device of hydrogen energy source, including：High pressure hydrogen tank (1),
Pressure energy recovery system (2), the pressure energy recovery system (2) include expanding machine (3) and heat exchanger (4), and generator (7) stores
Battery (8).Present case uses one-stage expansion, and high pressure hydrogen is flowed out from high pressure hydrogen tank (1), by centripetal axial-flow type expanding machine
(3) then decrease temperature and pressure, external output work flow into water-cooled heat exchanger (4) and absorb the heat of cooling circulating water and realize heating,
Fuel cell waste heat rationally is utilized.
As shown in fig. 6, externally being done work using one-stage expansion, this demi-inflation work(drives generator (7) externally to export electric work,
Complete the charging of accumulator (8).Accumulator climbs in vehicle as auxiliary power source or acceleration is short of power or Reduced Speed Now
When driving vehicle operation, realize the combined drive power of fuel-cell vehicle.Case study on implementation 4
As shown in fig. 7, hydrogen cell automobile air supply system, including：High pressure hydrogen tank (1), pressure energy retracting device
(2), compressor (5), hydrogen heater (9), hydrogen humidifier (10), water tank (11), water knockout drum (12), air humidifier
(13), fuel cell (14), water knockout drum (15), air heater (16).Anode supply air line：Hydrogen flows out high pressure hydrogen tank
(1), decompression cooling is expanded by pressure energy recovery system (2), flows into thermal resistance hydrogen heater (9) and heat to 70~80
DEG C, it flows into film hydrogen humidifier (10) and humidifies, flow into fuel cell (14) anode, complete electrochemical reaction, externally export electric work,
Extra hydrogen flows back to supply air line by water knockout drum (12), and water is discharged by water knockout drum (12) outside vehicle；Cathode supply air line：It is outdoor
Air passes through after removal filtration, and 0.4Mpa or so is compressed to through compressor (5), flows into thermal resistance air heater (16) and heats
Heating, then film air humidifier (13) humidification is flowed into, it finally flows into fuel battery negative pole and hydrogen completes electrochemical reaction, it is right
Outer output electric work, extra air flow through air heater by water knockout drum (15), intake air are tentatively heated, water warp
Water pump flows back to circulation waterway.
As shown in fig. 7, hydrogen fuel cell optimum working temperature, at 70~80 DEG C, hydrogen-oxygen fuel cell is exothermic reaction, is
Maintenance optimum working temperature, needs to cool down fuel cell.Cooling cycle water lines：Cooling water is from water tank (11)
Outflow, is divided into three flow paths, one flows through hydrogen humidifier (10), and another flows through air humidifier (13), to film humidifier
Moisturizing is carried out, also one flows through the temperature that fuel cell (14) absorbs heat reduction fuel cell, then flows through pressure energy and returns
Receipts system (2) carries out concurrent heating to pressure energy recovery system, increases expansion work amount.
Claims (4)
1. a kind of hydrogen cell automobile high-pressure hydrogen storing pressure tank energy retracting device, including：High pressure hydrogen tank (1), pressure energy are returned
Receipts system (2), the pressure energy recovery system are connected in series by expanding machine (3) and heat exchanger (4), and high pressure hydrogen is from high pressure hydrogen
Tank (1) flows out, and expands and is depressured by expanding machine (3), high pressure hydrogen pressure energy is converted to expansion work and is externally exported, then flow into and change
Hot device (4) heat absorption heating, improving expanding machine (3) intake air temperature makes its expansion process recycle more expansions close to constant temperature process
Work(, it is characterized in that：The pressure energy recovery system (2) of the present invention connected with heat exchanger (4) by one or more levels expanding machine (3) and
Into.
2. hydrogen cell automobile high-pressure hydrogen storing pressure tank energy retracting device according to claim 1, it is characterised in that：Institute
Expanding machine is stated as axial-flow type expanding machine, radial-flow type expanding machine, diameter axial-flow type expanding machine, scroll expansion machine, screw type expansion machine
Or piston expansion engine.
3. hydrogen cell automobile high-pressure hydrogen storing pressure tank energy retracting device according to claim 1, it is characterized in that：It is intermediate
The heat of heat patching device derives from air or fuel cell cooling circulation water.
4. hydrogen cell automobile high-pressure hydrogen storing pressure tank energy retracting device according to claim 1, it is characterized in that：It is described
Pressure energy recovery system (2) can be that two level or three-level expanding machine (3) are connected with heat exchanger (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720557257.6U CN207542327U (en) | 2017-05-18 | 2017-05-18 | Hydrogen cell automobile high-pressure hydrogen storing pressure tank energy retracting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720557257.6U CN207542327U (en) | 2017-05-18 | 2017-05-18 | Hydrogen cell automobile high-pressure hydrogen storing pressure tank energy retracting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207542327U true CN207542327U (en) | 2018-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720557257.6U Expired - Fee Related CN207542327U (en) | 2017-05-18 | 2017-05-18 | Hydrogen cell automobile high-pressure hydrogen storing pressure tank energy retracting device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198157A (en) * | 2021-11-03 | 2022-03-18 | 蜂巢蔚领动力科技(江苏)有限公司 | Fuel cell energy recovery system and control method |
| CN115207397A (en) * | 2022-09-08 | 2022-10-18 | 国网浙江省电力有限公司宁波供电公司 | Hydrogen fuel cell and compressed air energy storage combined operation system and control method thereof |
-
2017
- 2017-05-18 CN CN201720557257.6U patent/CN207542327U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198157A (en) * | 2021-11-03 | 2022-03-18 | 蜂巢蔚领动力科技(江苏)有限公司 | Fuel cell energy recovery system and control method |
| CN114198157B (en) * | 2021-11-03 | 2023-12-05 | 蜂巢蔚领动力科技(江苏)有限公司 | Fuel cell energy recovery system and control method |
| CN115207397A (en) * | 2022-09-08 | 2022-10-18 | 国网浙江省电力有限公司宁波供电公司 | Hydrogen fuel cell and compressed air energy storage combined operation system and control method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180626 Termination date: 20190518 |
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| CF01 | Termination of patent right due to non-payment of annual fee |