CN209730059U - A kind of fuel cell pile started quickly at low temperature system - Google Patents
A kind of fuel cell pile started quickly at low temperature system Download PDFInfo
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- CN209730059U CN209730059U CN201920861608.1U CN201920861608U CN209730059U CN 209730059 U CN209730059 U CN 209730059U CN 201920861608 U CN201920861608 U CN 201920861608U CN 209730059 U CN209730059 U CN 209730059U
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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
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Abstract
A kind of fuel cell pile started quickly at low temperature system, including cold-starting water tank, cold-starting water pump, four valves and a heat-exchanger rig, cold-starting water tank, cold-starting water pump and four valves constitute the dedicated lesser circulation of cold-starting, and heat-exchanger rig is serially connected between the outlet and entrance of fuel cell pile cooling cavities.Starting method is: first pile being activated and purged；After the completion, valve I and valve III, Open valve II and valve IV are closed, cold-starting water pump, the dedicated lesser circulation operation of cold-starting, into cold-starting are opened；After success, Open valve I and valve III close valve II and valve IV, close cold-starting water pump, operate normally into pile.Beneficial effect is: system structure is simple, practical, effective, and starting method is simple, shortens the cold-starting time, promotes the power output of cold-starting, and without additional hot cell, no additional energy consumption is not damaged to pile.
Description
Technical field
The utility model belongs to field of fuel cell technology more particularly to fuel cell pile started quickly at low temperature technology.
Background technique
Fuel cell cold-starting is always one of the key factor for restricting fuel cell car commercialization.Fuel cell electricity
When piling up subzero quick start, since the water that inside battery reaction generates under low temperature environment is easy to freeze, to reduce electricity
Heap response area and barrier gas channel, cause cold-starting to fail.Therefore, by pile internal temperature rise rapidly to zero degree with
On, it is that the pass of fuel cell cold-starting is crucial.
To solve the problems, such as started quickly at low temperature, there are many methods in the prior art, immediate with the present invention to be:
A kind of low-temperature start system being provided with the dedicated lesser circulation of cold-starting, the dedicated lesser circulation of cold-starting
Including a cold-starting water tank, cold-starting water pump and four valves, the water outlet of cold-starting water tank by pipeline with it is low
Startup temperature unit fixed on water pump suction is connected, and cold-starting exit of pump passes through pipeline and fuel cell pile cooling cavities entrance pipe phase
Even, the water inlet of cold-starting water tank is connected by pipeline with fuel cell pile cooling cavities export pipeline, four valves two
A to be separately positioned in fuel cell pile cooling cavities export pipeline and inlet ductwork, two to be separately positioned on cold-starting special
With on lesser circulation and fuel cell pile cooling cavities export pipeline and inlet ductwork, by four valves two-by-two open and
It closes, realizes that cooling system is operating normally the switching with the dedicated lesser circulation operation of cold-starting, it is dedicated small with cold-starting
The water tank of the circulatory system is small, and the coolant liquid in the water tank of lesser circulation can quickly be made to heat up, and heats electricity with the coolant liquid of heat
Heap reaches started quickly at low temperature.
The technology of other fuel cell cold-startings is such as:
Patent " a kind of the air return heating system and its method of fuel cell cold-starting " discloses and uses air return
The system and method for heating heat pile and its components using the compressed high temperature air of air compressor machine, accelerate
The thawing of ice crystal on electrode enables fuel cell quick start at a lower temperature.
Patent " a kind of -20 DEG C of quick start proton exchange film fuel battery systems " discloses a kind of pair of pile air intake
The low-temperature start system of additional auxiliary heat heats pile inlet air by adding heating tape outside air inlet side, shortens low temperature
Start the time.Meanwhile having installed the high molecular polymer of thermal coefficient very little additional between end battery and pile end plate, to reduce heat
To external transmitting, improve the low phenomenon of edge list in start-up course.
Patent " a kind of heat management system and its method of low temperature starting of fuel cell power generation " discloses inner loop
The system that water tank installs heater additional, promotes coolant temperature by being heated to water tank, increases stack temperature rapidly, keep away
Exempt from battery in start-up course and freezeout occurs.
Patent " Proton Exchange Membrane Fuel Cells of a kind of 0 DEG C or less quick start " proposes the etched recesses on end plate,
And sealing is laid with heating wire in the trench, increases lip temperature rapidly using external heat source heating, guarantees lip temperature distribution
Uniformly, the low influence to low-temperature startup performance of edge list is reduced.
Patent " proton exchanging film fuel battery is in sub-zero starting method " is proposed a certain proportion of hydrogen
Oxygen gas mixture is passed through cathode or anode, and using hydrogen, oxidation heat liberation improves battery temperature on MEA catalyst, can make fuel cell
Quick start is realized at a lower temperature.
The deficiencies in the prior art are:
Cold-starting may be implemented in the low-temperature start system for being provided with the dedicated lesser circulation of cold-starting, but starts speed
It is relatively slow, the coolant liquid of fuel cell pile cooling cavities outlet high-temperature is not made full use of, but fuel cell pile is cooling
The coolant liquid of cavity outlet high-temperature enters water tank, and the coolant liquid in water tank is heated.
The deficiency of other patented technologies is:
Patent " a kind of the air return heating system and its method of fuel cell cold-starting ", effect is limited, works as pile
When temperature is lower, pile outlet temperature is very low, and the heating effect after reflux to pile is unobvious, and Measurement of Gas Thermal Conductivity
Small, heating effect is poor.
Patent " a kind of -20 DEG C of quick start proton exchange film fuel battery systems ", needs external power supply to be powered, and
The electricity that external power supply provides at low ambient temperatures is limited.
Patent " a kind of heat management system and its method of low temperature starting of fuel cell power generation ", needs external power supply to mention
For electric energy, corollary equipment is complicated and energy consumption is more.
Patent " Proton Exchange Membrane Fuel Cells of a kind of 0 DEG C or less quick start ", needs external power supply equipment, increases
The complexity of system.
Patent " method that a proton exchanging film fuel battery starts in subzero " can generate to a certain degree electrode
Corrosion, influence its service life.
Summary of the invention
The purpose of this utility model is to provide a kind of fuel cell pile low temperature for not needing additional auxiliary thermal source is quick
Activation system.It is cold to pile entrance by installing a kind of small high efficient heat exchanger between fuel cell pile outlet and entrance
But liquid heats, and promotes coolant temperature, reduces cold shock of the coolant liquid to pile, and the edge list during improvement cold-starting is low
Phenomenon shortens the fuel cell pile cold-starting time.
The technical solution of the utility model is: a kind of fuel cell pile started quickly at low temperature system, including a set of low temperature
Start dedicated lesser circulation, the dedicated lesser circulation of cold-starting include a cold-starting water tank, cold-starting water pump and
The water outlet of four valves, cold-starting water tank is connected by pipeline with cold-starting unit fixed on water pump suction, cold-starting exit of pump
It is connected by pipeline with fuel cell pile cooling cavities entrance pipe, the water inlet of cold-starting water tank passes through pipeline and fuel
Battery stack cooling cavities export pipeline is connected, and four valves are respectively: being connected to fuel cell pile cooling cavities inlet tube
The valve I of road, the valve III being connected on fuel cell pile cooling cavities export pipeline, it is dedicated small to be connected to cold-starting
The cold-starting water pump of the circulatory system is connected with fuel cell pile cooling cavities entrance pipe on pipeline valve II and even
Connect what the cold-starting water tank in the dedicated lesser circulation of cold-starting was connected with fuel cell pile cooling cavities export pipeline
Valve IV on pipeline, the tie point that the pipeline of valve II is connected with fuel cell pile cooling cavities entrance pipe is in valve I
On pipeline between fuel cell pile cooling cavities entrance, the pipeline and fuel cell pile cooling cavities of valve IV are exported
The connected tie point of pipeline is on the pipeline between valve III and the outlet of fuel cell pile cooling cavities, it is characterised in that；Institute
Stating fuel cell pile started quickly at low temperature system further includes a heat-exchanger rig, the heat-exchanger rig first fluid import and fuel
Battery pile cooling cavities entrance pipe is connected, pipeline of the tie point between valve II and fuel cell pile cooling cavities entrance
On, first fluid outlet is connected with fuel cell pack cooling cavities entrance, the import of heat-exchanger rig second fluid and fuel cell pack
Cooling cavities outlet is connected, and second fluid outlet is connected with the inlet ductwork of valve IV.
A kind of fuel cell pile started quickly at low temperature system described in the utility model, it is characterised in that；The low-temperature starting
The volume of dynamic water tank is V, 1L≤V≤3L.
The starting method of the fuel cell pile started quickly at low temperature system of the utility model is as follows
Valve I and valve III, Open valve II and valve IV are closed, the low temperature of the dedicated lesser circulation of cold-starting is started
Start water pump, the dedicated lesser circulation operation of cold-starting, starting fluid battery system, into cold-starting, to fuel cell
Output power reach setting value, cold-starting success, at this point, Open valve I and valve III, close valve II and valve IV,
The cold-starting water pump for stopping cold-starting lesser circulation is operated normally into pile.
The principles of the present invention are: heat-exchanger rig of having connected in cold-starting partial circulating, the cold flow of pile coolant liquid
Body enters in heat-exchanger rig first fluid by valve 2, and the hot fluid of pile cooling chamber outlet enters heat-exchanger rig second
In vivo, the cold fluid of the first-class intracorporal pile coolant liquid of heat-exchanger rig with hot fluid in heat-exchanger rig second fluid by exchanging heat
Enter pile afterwards, fuel cell pile temperature promoted rapidly by the cold fluid heating to pile cooling chamber inlet in this way,
Complete fuel cell pile started quickly at low temperature.
The theoretical calculation of heat-exchanger rig is as follows: to heat-exchanger rig known to parameter, can be counted using effectiveness-NTU method
Temperature value of the cold fluid after heat-exchanger rig is calculated,
Number of transfer units are as follows:
In formula: k: the heat transfer coefficient of heat-exchanger rig
A: the heat exchange area of heat-exchanger rig
qm: liquid mass flow
C: fluid density
For determining heat-exchanger rig, heat transfer system k and heat exchange area A are known parameters, after determining NTU, according to heat exchange
Corresponding ε-NTU the relational graph of device can determine heat-exchanger rig efficiency value ε.
Cold fluid and hot fluid heat flow are as follows:
In formula: t '1: hot fluid inlet temperature
t′2: cold fluid inlet temperature
Cold fluid outlet temperature can be acquired according to thermal balance relational expression are as follows:
In formula: t "2: cold fluid outlet temperature
Pile coolant inlet temperature increases with the increase of loading current, and loading current is bigger, and unit time pile produces
Raw heat is more, and the hot fluid of pile cooling liquid outlet is through heat-exchanger rig to the cold fluid heating effect of pile cooling chamber entrance
It is more significant, i.e., in formula 3It is worth bigger.
The beneficial effects of the utility model are: system structure is simple, practical, effective, starting method is simple, can substantially shorten
The fuel cell cold-starting time promotes the power output of fuel cell pile cold-starting, is not necessarily to additional auxiliary heating element,
It is consumed without additional energy, it is not damaged to pile.
Detailed description of the invention
Fig. 1 is not install output power and coolant inlet during heat-exchanger rig cold-starting under -20 DEG C of environment temperatures
Temperature profile, solid line indicates that the output power of pile during cold-starting, dotted line indicate electricity during cold-starting in figure
Heap coolant inlet temperature.
Fig. 2 is that output power and coolant inlet temperature during heat-exchanger rig cold-starting are installed under -20 DEG C of environment temperatures
It writes music line chart, solid line indicates that the output power of pile during cold-starting, dotted line indicate pile during cold-starting in figure
Coolant inlet temperature.
Fig. 3 is fuel cell pile started quickly at low temperature system schematic.
In figure, 1, cold-starting water pump, 2, heat-exchanger rig, 3, fuel cell pile, 4, gas vent, 5, cold-starting water
Case, S1, valve I, S2, valve II, S3, valve III, S4, valve IV.
Specific embodiment
Below in conjunction with the drawings and specific embodiments to being originally described further.
A kind of fuel cell pile started quickly at low temperature system, including the dedicated lesser circulation of a set of cold-starting and one change
Thermal 2, the dedicated lesser circulation of cold-starting include a cold-starting water tank 5, cold-starting water pump 1 and four valves,
The water outlet of cold-starting water tank 5 is connected by pipeline with 1 import of cold-starting water pump, and the outlet of cold-starting water pump 1 passes through pipe
Road is connected with fuel cell pile cooling cavities entrance pipe, and the water inlet of cold-starting water tank 5 passes through pipeline and fuel cell
Pile cooling cavities export pipeline is connected, and four valves are respectively: being connected on fuel cell pile cooling cavities entrance pipe
Valve I S1, it is dedicated small to be connected to cold-starting III S3 of valve being connected on fuel cell pile cooling cavities export pipeline
II S2 of valve on the pipeline that the cold-starting water pump 1 of the circulatory system is connected with fuel cell pile cooling cavities entrance pipe and
The cold-starting water tank 5 for being connected to the dedicated lesser circulation of cold-starting is connected with fuel cell pile cooling cavities export pipeline
Pipeline on IV S4 of valve, the tie point that the pipeline of II S2 of valve is connected with fuel cell pile cooling cavities entrance pipe exists
On pipeline between valve I S1 and fuel cell pile cooling cavities entrance, the pipeline and fuel cell pile of IV S4 of valve is cold
But on pipeline of the connected tie point of cavity outlet pipeline between III S3 of valve and the outlet of fuel cell pile cooling cavities；It changes
2 first fluid import of thermal is connected with fuel cell pack cooling cavities entrance pipe, and tie point is in II S2 of valve and fuel electricity
On pipeline between the pile cooling cavities entrance of pond, first fluid outlet is connected with fuel cell pack cooling cavities entrance, exchanges heat
2 second fluid import of device is connected with the outlet of fuel cell pack cooling cavities, the inlet tube of second fluid outlet and IV S4 of valve
Road is connected.Valve I S1, II S2 of valve, III S3 of valve and IV S4 of valve are check valves.The volume of cold-starting water tank 5 is V, 1L
≤V≤3L。
The starting method method of fuel cell pile started quickly at low temperature system is as follows:
Before the starting of fuel cell pile started quickly at low temperature system, first I S1 of Open valve and III S3 of valve close valve II
IV S4 of S2 and valve, activates pile and is purged, after the completion, close valve I S1 and III S3 of valve, II S2 of Open valve and
IV S4 of valve starts the cold-starting water pump 1 of the dedicated lesser circulation of cold-starting, the dedicated lesser circulation fortune of cold-starting
Row, starting fluid battery system, into cold-starting, the output power to fuel cell reaches setting value, and cold-starting is successful,
At this point, III S3 of I S1 of Open valve and valve, closes II S2 of valve and IV S4 of valve, stop the low of cold-starting lesser circulation
Startup temperature water pump 1 is operated normally into pile.
Claims (2)
1. a kind of fuel cell pile started quickly at low temperature system, including the dedicated lesser circulation of a set of cold-starting, low-temperature starting
Moving dedicated lesser circulation includes a cold-starting water tank (5), cold-starting water pump (1) and four valves, cold-starting water
The water outlet of case (5) is connected by pipeline with cold-starting water pump (1) import, cold-starting water pump (1) outlet pass through pipeline and
Fuel cell pile cooling cavities entrance pipe is connected, and the water inlet of cold-starting water tank (5) passes through pipeline and fuel cell electricity
Heap cooling cavities export pipeline is connected, and four valves are respectively: being connected on fuel cell pile cooling cavities entrance pipe
Valve I (S1), the valve III (S3) being connected on fuel cell pile cooling cavities export pipeline, it is dedicated to be connected to cold-starting
The valve II on pipeline that the cold-starting water pump (1) of lesser circulation is connected with fuel cell pile cooling cavities entrance pipe
(S2) and be connected to the dedicated lesser circulation of cold-starting cold-starting water tank (5) and fuel cell pile cooling cavities export
Valve IV (S4) on the connected pipeline of pipeline, pipeline and the fuel cell pile cooling cavities entrance pipe phase of valve II (S2)
Tie point even is on the pipeline between valve I (S1) and fuel cell pile cooling cavities entrance, the pipeline of valve IV (S4)
The tie point being connected with fuel cell pile cooling cavities export pipeline is in valve III (S3) and fuel cell pile cooling cavities
On pipeline between outlet, it is characterised in that；The fuel cell pile started quickly at low temperature system further includes a heat exchange dress
It sets (2), heat-exchanger rig (2) the first fluid import is connected with fuel cell pack cooling cavities entrance pipe, and tie point is in valve
On pipeline between II (S2) of door and fuel cell pile cooling cavities entrance, first fluid outlet and fuel cell pack cooling chamber
Body entrance is connected, and the outlet of heat-exchanger rig (2) second fluid import and fuel cell pack cooling cavities is connected, second fluid export and
The inlet ductwork of valve IV (S4) is connected.
2. a kind of fuel cell pile started quickly at low temperature system as described in claim 1, it is characterised in that；The cold-starting
The volume of water tank (5) is V, 1L≤V≤3L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920861608.1U CN209730059U (en) | 2019-06-10 | 2019-06-10 | A kind of fuel cell pile started quickly at low temperature system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920861608.1U CN209730059U (en) | 2019-06-10 | 2019-06-10 | A kind of fuel cell pile started quickly at low temperature system |
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| Publication Number | Publication Date |
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| CN209730059U true CN209730059U (en) | 2019-12-03 |
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| CN201920861608.1U Active CN209730059U (en) | 2019-06-10 | 2019-06-10 | A kind of fuel cell pile started quickly at low temperature system |
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- 2019-06-10 CN CN201920861608.1U patent/CN209730059U/en active Active
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