CN212676312U - Hydrogen fuel cell thermal management system based on shape memory alloy - Google Patents
Hydrogen fuel cell thermal management system based on shape memory alloy Download PDFInfo
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- CN212676312U CN212676312U CN202021379582.6U CN202021379582U CN212676312U CN 212676312 U CN212676312 U CN 212676312U CN 202021379582 U CN202021379582 U CN 202021379582U CN 212676312 U CN212676312 U CN 212676312U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/30—Hydrogen technology
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Abstract
The utility model discloses a hydrogen fuel cell thermal management system based on shape memory alloy relates to battery heat dissipation technical field, including the cooling pipeline that runs through the hydrogen fuel cell pile, be equipped with coolant liquid holding vessel, circulating pump and heat abstractor on the cooling pipeline in proper order, heat abstractor's coolant liquid export and the coolant liquid import intercommunication of hydrogen fuel cell pile, the high temperature coolant liquid export of hydrogen fuel cell pile is respectively through the import intercommunication of coolant liquid holding vessel and cooling pipeline and circulating pump. The cooling liquid in the cooling liquid storage tank is conveyed to the hydrogen fuel cell stack through the circulating pump to cool the hydrogen fuel cell stack, and the cooling liquid absorbs heat and is heated through the hydrogen fuel cell stack and then is cooled through the heat dissipation device to form circulation. The utility model utilizes the deformation of the memory alloy to generate the driving force to drive the heat dissipation device to dissipate heat, thereby replacing the traditional motor drive; meanwhile, the performance of the heat dissipation device driven by the memory alloy is superior to that of a common water-cooling heat dissipation system.
Description
Technical Field
The utility model relates to a battery heat dissipation technical field especially relates to a hydrogen fuel cell thermal management system based on shape memory alloy.
Background
With the continuous improvement of living standard of people, the keeping quantity of automobiles is increased year by year, environmental pollution, greenhouse effect and climate warming caused by exhaust gas emitted by automobiles become hot points of attention of people, and one method for solving the problem is to develop a new energy automobile with zero pollution and zero emission. The hydrogen fuel cell is a power generation device which directly converts chemical energy of hydrogen and oxygen into electric energy, the generated electricity directly drives a motor to provide power for an automobile, and a reaction product is water, so that zero pollution and zero emission can be really realized.
One of the most critical issues facing hydrogen fuel cells today is heat dissipation and thermal management system optimization. Under the same vehicle running condition, the heat dissipation capacity of the hydrogen fuel cell is about 10% -20% greater than that of the traditional fuel engine, but the running temperature of the fuel cell system is lower, and the temperature difference with the environment is smaller, so that the heat dissipation requirement of the fuel cell is much higher than that of the traditional vehicle. If the heat dissipation area is increased, the heat dissipation system is too large; if the power of the radiator is increased, large electric energy is consumed, and the core concept of energy conservation and emission reduction of the hydrogen energy battery is not met. Therefore, how to optimize the thermal management system of the hydrogen energy battery, reduce the heat dissipation power consumption, and simultaneously meet the heat dissipation requirements required by the system is a direction which is worthy of research and exploration.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the not enough of above-mentioned prior art, provide a hydrogen fuel cell thermal management system based on shape memory alloy, dispel the heat as the power supply with the help of memory alloy's shape memory function, effectively improve radiating efficiency, reduce the energy consumption.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is:
the utility model provides a hydrogen fuel cell thermal management system based on shape memory alloy, is including the cooling pipeline who link up the hydrogen fuel cell pile, be equipped with coolant liquid holding vessel, circulating pump on the cooling pipeline in proper order and utilize the heat abstractor that memory alloy deformation made drive power, heat abstractor's coolant liquid export and the coolant liquid import of hydrogen fuel cell pile communicate, the high temperature coolant liquid export of hydrogen fuel cell pile communicates with the import of circulating pump through coolant liquid holding vessel and cooling pipeline respectively.
Preferably, a three-way valve is arranged on a cooling pipeline between the circulating pump and the heat dissipation device, an inlet of the three-way valve is connected with an outlet of the circulating pump, a first outlet of the three-way valve is connected with a first branch, a second outlet of the three-way valve is connected with a cooling liquid inlet of the heat dissipation device, a deionizer is arranged on the first branch, and an outlet end of the first branch is communicated with the cooling liquid inlet of the hydrogen fuel cell stack; the three-way valve is internally provided with a spiral memory alloy and is used for controlling the communication between the first outlet and the heat dissipation device when the cooling liquid is at a high temperature and the communication between the second outlet and the first branch circuit when the cooling liquid is at a low temperature.
Preferably, the three-way valve comprises a shell and a valve shaft, a valve plate, a push rod, a spring and spiral memory alloy which are arranged in the shell, wherein the spring and the spiral memory alloy are respectively arranged on the upper side and the lower side of the valve plate; the shell is in a cone shape, the first outlet is arranged in the middle of the side wall of the shell, and the second outlet is arranged at the top of the shell; the central axis of the push rod coincides with the central axis of the spring, the push rod is arranged above the valve shaft, the lower part of the push rod is fixedly connected with the valve plate, and the spring is sleeved on the upper part of the push rod; the push rod comprises a cover plate for plugging the second outlet and a push shaft externally sleeved with a spring, the spiral memory alloy is sleeved on the valve shaft, the upper end of the spiral memory alloy is fixedly connected with the lower end of the push shaft, and the lower end of the spiral memory alloy is fixedly connected with the valve shaft; the valve shaft and the push rod are both hollow tubes, a liquid inlet is formed in the lower end of the valve shaft, a liquid outlet communicated with the inner cavity of the shell below the valve plate is formed in the upper end of the valve shaft, an opening in the upper end of the push shaft is formed below the cover plate and communicated with the second outlet, and an outlet in the lower end of the push shaft is opposite to the liquid outlet of the valve shaft; the edge of the valve plate is a conical surface and is used for plugging the first outlet on the side surface of the shell.
Preferably, the middle part of the valve plate is provided with a bulge, and the periphery of the bulge is provided with an annular groove; the lower part of the spring is arranged in the groove, and the upper part of the spiral memory alloy is arranged in the convex part.
Preferably, the cooling system further comprises a second branch for adjusting the temperature of the cooling liquid, wherein a cooler and a heater are arranged on the second branch, and the cooler is an intercooler and used for cooling the cooling liquid; the heater is a PTC water heating heater and is used for heating the cooling liquid in cold weather; and the inlet of the second branch is respectively communicated with the cooling liquid outlet of the heat dissipation device and the outlet end of the first branch, and the outlet of the second branch is communicated with the inlet of the circulating pump through a cooling pipeline.
Preferably, the heat dissipation device comprises a hot water tank, a radiator, a fan and a driving mechanism for driving the fan to rotate, wherein the fan corresponds to the radiator and is arranged outside the hot water tank; the driving mechanism comprises a driving belt wheel, a driven belt wheel, a conveying belt and a memory alloy driving piece for driving the driving belt wheel; the driven belt wheel is coaxially fixed with a rotating shaft of the fan, the driving belt wheel is connected with the driven belt wheel through a conveying belt, and the rotating shafts of the driving belt wheel and the driven belt wheel are respectively connected with two ends of a connecting rod; the memory alloy driving part is connected with the driving belt wheel and arranged in the hot water tank.
Preferably, the memory alloy driving part is in a long strip shape, the driving belt wheel is coaxially fixed with the impeller, the memory alloy driving part is radially fixed on the impeller, and the tail end of the memory alloy driving part is provided with a shifting piece.
Preferably, the number of the fans is two, and the fans are symmetrically arranged on two sides of the radiator.
Preferably, the heat sink is a finned heat sink.
Preferably, the coolant outlet of the radiator is communicated with the coolant storage tank through a first branch, and the coolant outlet of the hydrogen fuel cell stack is communicated with the coolant storage tank through a second branch.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: compared with the prior art, the utility model discloses a coolant liquid in circulating pump and cooling pipeline carry the coolant liquid in with the coolant liquid holding vessel to the hydrogen fuel cell galvanic pile and cool down to it, and the coolant liquid cools down through heat abstractor heat dissipation again after the hydrogen fuel cell galvanic pile heat absorption intensifies, forms circulation cooling return circuit. The utility model utilizes the deformation of the memory alloy to generate the driving force to drive the heat dissipation device to dissipate heat, thereby replacing the traditional motor drive; meanwhile, under the same heat dissipation time, the performance of the heat dissipation device driven by the memory alloy is much higher than that of a common water-cooling heat dissipation system, and after the circulating pump is powered off, the memory alloy can still carry out waste heat dissipation under the drive of waste heat, so that the service life of the whole system is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a shape memory alloy-based hydrogen fuel cell thermal management system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the construction of the three-way valve of FIG. 1;
fig. 3 is a schematic structural diagram of a heat dissipation device according to an embodiment of the present invention;
fig. 4 is a schematic view illustrating the cooperation of the driving pulley and the impeller according to an embodiment of the present invention;
FIG. 5 is a left side view of the impeller of FIG. 4;
FIG. 6 is a sectional view taken along line A-A in FIG. 5;
in the figure: 1-a hydrogen fuel cell stack; 2-a coolant storage tank; 3-a circulating pump; 4-heat dissipation device, 40-hot water tank, 41-heat dissipation device, 42-fan, 43-driving pulley, 44-driven pulley, 45-transmission belt, 46-memory alloy driving piece, 47-connecting rod;
5-three-way valve, 50-shell, 51-first outlet, 52-second outlet, 53-valve shaft, 54-valve plate, 540-boss; 55-push rod, 550-cover plate, 551-push shaft; 56-spring, 57-helical memory alloy;
6-branch one; 7-a deionizer; 8-branch two; 9-a cooler; 10-a heater; 11-an impeller; 12-a plectrum; 13-branch one; 14-branch two; 15-four-way joint.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the technical solutions in the embodiments of the present invention are described below clearly and completely with reference to the accompanying drawings and specific embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the utility model provides a pair of hydrogen fuel cell thermal management system based on shape memory alloy, including the cooling pipeline who link up hydrogen fuel cell pile 1, be equipped with coolant liquid holding vessel 2, circulating pump 3 on the cooling pipeline in proper order and utilize memory alloy deformation to make heat abstractor 4 of drive power, heat abstractor 4's coolant liquid export and hydrogen fuel cell pile 1's coolant liquid import intercommunication, hydrogen fuel cell pile 1's high temperature coolant liquid export is through coolant liquid holding vessel 2 and cooling pipeline and circulating pump 3's import intercommunication respectively.
Compared with the prior art, the utility model discloses concrete simple structure is compact, the effectual advantage of cooling, utilize memory alloy's deformation to produce drive power and drive heat abstractor for cooling down the coolant liquid through heat abstractor, the coolant liquid after the cooling flows through the hydrogen fuel cell pile and cools down to it, the coolant liquid absorbs the heat back temperature of hydrogen fuel cell pile and risees, flows back and stores in the coolant liquid holding vessel, carries to heat abstractor through circulating pump and cooling line again and cools down, form circulation circuit. The utility model discloses utilize memory alloy's deformation to drive heat abstractor and dispel the heat to the coolant liquid, replaced traditional motor drive. Under the same heat dissipation time, the performance of the heat dissipation device driven by the memory alloy is superior to that of a common water-cooling heat dissipation system, and after the circulating pump is powered off, the memory alloy can still dissipate heat of waste heat of the heat dissipation device driven by the waste heat, so that the service life of the whole system is prolonged.
In a specific embodiment of the utility model, as shown in fig. 1, be equipped with three-way valve 5 on the cooling pipeline between circulating pump 3 and heat abstractor 4, three-way valve 5's import links to each other with circulating pump 3's export, three-way valve 5's first export 51 links to each other with branch road one 6, three-way valve 5's second export 52 links to each other with heat abstractor 4's coolant liquid import, being equipped with deionizer 7 on branch road one 6, utilizing deionizer to get rid of the conductive ion in the coolant liquid, avoid the high voltage to pass through the coolant liquid and transmit to the cooling pipeline in. The outlet end of the first branch 6 is communicated with a cooling liquid inlet of the hydrogen fuel cell stack 1; the three-way valve 5 is internally provided with a spiral memory alloy 8 for controlling the communication between the second outlet 52 and the heat sink 4 when the cooling liquid is at a high temperature and the communication between the first outlet 51 and the first branch 6 when the cooling liquid is at a low temperature. When the temperature of the cooling liquid in the cooling pipeline is low, the second outlet 52 of the three-way valve is closed, and the cooling liquid goes to the hydrogen fuel cell stack for heat exchange through the deionizer 7 to form a small circulation; when the temperature of the cooling liquid in the cooling pipeline is too high, the spiral memory alloy in the three-way valve is heated and deformed, and the opening degree of the first outlet is controlled according to the temperature of the cooling liquid, so that part of the cooling liquid enters the heat dissipation device to dissipate heat, a large circulation is formed, and the temperature of the cooling liquid is guaranteed to be maintained in the temperature range required by the system.
In an embodiment of the present invention, as shown in fig. 2, the three-way valve 5 includes a housing 50 and a valve shaft 53, a valve plate 54, a push rod 55, a spring 56 and a spiral memory alloy 57 inside the housing, wherein the spring 56 and the spiral memory alloy 57 are respectively disposed on the upper side and the lower side of the valve plate 54; the shell 50 is in a cone shape, the first outlet 51 is arranged in the middle of the side wall of the shell 50, and the second outlet 52 is arranged at the top of the shell 50; the central axis of the push rod 55 coincides with the central axis of the spring 56, the push rod 55 is arranged above the valve shaft 53, the lower part of the push rod 55 is fixedly connected with the valve plate 54, and the spring 56 is sleeved on the upper part of the push rod 55; the push rod 55 comprises a cover plate 550 for blocking the second outlet 52 and a push shaft 551 externally sleeved with a spring 56, the spiral memory alloy 57 is sleeved on the valve shaft 53, the upper end of the spiral memory alloy 57 is fixedly connected with the lower end of the push shaft 551, and the lower end of the spiral memory alloy 57 is fixedly connected with the valve shaft 53; the valve shaft 53 and the push rod 55 are both hollow tubes, a liquid inlet is formed in the lower end of the valve shaft 53, a liquid outlet communicated with the inner cavity of the shell 50 below the valve plate 54 is formed in the upper end of the valve shaft 53, an opening in the upper end of the push shaft 551 is formed below the cover plate 550 and communicated with the second outlet 52, and an outlet in the lower end of the push shaft 551 is opposite to the liquid outlet of the valve shaft 53; the edge of the valve plate 54 is a conical surface for blocking the first outlet 51 on the side surface of the housing 50. The three-way valve with the structure can realize the switching between the first outlet and the second outlet according to the temperature of the cooling liquid, and the specific working process is as follows:
when the temperature of the cooling liquid in the cooling pipeline is low, the spiral memory alloy 57 curls, deforms and contracts, and simultaneously drives the valve plate and the push rod 55 to move downwards under the action of the spring 56, so that the cover plate 550 is driven to plug the second outlet 52 at the top of the shell 50, the cooling liquid can only enter the inner cavity of the shell 50 from the middle part of the valve shaft 53 and is discharged from the first outlet 51 on the side wall of the shell 50, and the cooling liquid enters the first branch 6 and enters the hydrogen fuel cell stack for heat exchange through the deionizer 7, so that a small circulation is formed; when the temperature of the cooling liquid is too high, the spiral memory alloy 57 deforms by heat to push the push rod 55 upwards, the cover plate 550 moves upwards, the second outlet is opened, the valve plate 54 moves upwards under the driving of the push shaft 551, the conical surface around the valve plate 54 is close to the first outlet 51 on the side wall of the shell 50, the opening degree of the first outlet 51 is controlled according to the temperature of the cooling liquid, the first outlet 51 can be partially or completely blocked by the conical surface of the valve plate, and part or all of the cooling liquid enters the heat dissipation device 4 for heat dissipation to form a large circulation, so that the temperature of the cooling liquid is maintained within the temperature range required by the system. In conclusion, the spiral memory alloy can deform in different degrees according to different temperatures of the cooling liquid, the flow of the cooling liquid in the cooling pipeline is conveniently controlled, the function of opening and closing is achieved, and the influence of overhigh temperature on the performance of the system is prevented.
Further optimizing the above technical solution, as shown in fig. 2, a protruding portion 540 is disposed in the middle of the valve plate 54, and an annular groove 541 is disposed around the protruding portion 540; the lower portion of the spring 56 is disposed in the groove 541, and the upper portion of the spiral memory alloy 57 is disposed in the protrusion 540. Adopt this structure can carry out spacing to spring and heliciform memory alloy, avoid taking place to shift.
In a specific embodiment of the present invention, as shown in fig. 1, the present invention further includes a second branch 8 for adjusting the temperature of the cooling liquid, a cooler 9 and a heater 10 are disposed on the second branch 8, and the cooler 10 is an intercooler for cooling the cooling liquid; the heater 10 is a PTC water heating heater and is used for heating coolant in cold weather; and the inlet of the second branch 8 is respectively communicated with the coolant outlet of the heat dissipation device 4 and the outlet end of the first branch 6, and the outlet of the second branch 8 is communicated with the inlet of the circulating pump 3 through a cooling pipeline. The intercooler is used for realizing heat exchange between the cooling liquid and compressed air of the air compressor, and the cooling liquid is cooled; when the weather is cold, the PTC water heating heater is used for heating the cooling liquid to raise the temperature. With this structure, it is possible to ensure that the coolant entering the hydrogen fuel cell stack is maintained at an appropriate temperature.
In an embodiment of the present invention, as shown in fig. 3, the heat dissipation device 4 includes a hot water tank 40, a heat sink 41, a fan 42 and a driving mechanism for driving the fan to rotate, the fan 42 corresponds to the heat sink 41 and is disposed outside the hot water tank 40; the driving mechanism comprises a driving pulley 43, a driven pulley 44, a conveyor belt 45 and a memory alloy driving piece 46 for driving the driving pulley 43; the driven pulley 44 is coaxially fixed with the rotating shaft of the fan 42, the driving pulley 43 is connected with the driven pulley 44 through a conveyor belt 45, and the rotating shafts of the driving pulley 43 and the driven pulley 44 are respectively connected with two ends of a connecting rod 47; the memory alloy driving member 46 is connected to the driving pulley 43, and the memory alloy driving member 46 is disposed in the hot water tank 40. Wherein, the radiator can be a finned radiator. Utilize the deformation drive driving pulley rotation of memory alloy driving piece, and then drive driven pulleys through the conveyer belt and rotate, driven pulleys redrive fan is rotatory, utilizes the fan to cool down the radiator. As shown in fig. 1, the two fans 42 are symmetrically disposed on two sides of the heat sink 41.
In a specific embodiment of the present invention, as shown in fig. 4, 5 and 6, the memory alloy driving member 46 is a strip, the driving pulley 43 is coaxially fixed to the impeller 11, the memory alloy driving member 46 is radially fixed to the impeller 11, and the end of the memory alloy driving member 46 is provided with the shifting piece 12. When in use
The utility model discloses an in a specific embodiment, when memory alloy driving piece gets into below the liquid level, memory alloy absorbs the heat and takes place the bending, it is rotatory to drive the reaction force that the plectrum paddling produced and promote the pivot, when memory alloy driving piece is rolled out above the liquid level along with the plectrum, memory alloy driving piece is cooled down in the air and is straightened, the plectrum continues to rotate, memory alloy driving piece gets into below the liquid level again, memory alloy driving piece is heated the bending once more, memory alloy driving piece is cyclic deformation that begins to circulate repeatedly, realize driving pulley's continuous rotation, and then it is rotatory to drive the fan through driven pulley, the realization is to the cooling liquid cooling in the radiator, the cooling liquid after the cooling flows into the cooling liquid holding vessel from the radiator, realize the circulation of cooling. Even if the circulating pump is powered off, the memory alloy driving part still can enable the fan to rotate under the driving of waste heat, and then the waste heat of the radiator is dissipated, so that the service life of the whole system is prolonged.
Further optimizing the technical scheme, the cooling liquid outlet of the radiator 4 is communicated with the cooling liquid storage tank 2 through a first branch 13, and the cooling liquid outlet of the hydrogen fuel cell stack 1 is communicated with the cooling liquid storage tank 2 through a second branch 14. The flow of the cooling liquid in the cooling pipeline is adjusted by the first branch and the second branch, and the temperature of the cooling liquid in the cooling liquid storage tank is adjusted at the same time. The pipeline between the radiator and the hydrogen fuel cell stack, the pipeline between the deionizer and the hydrogen fuel cell stack and the junction of the branch circuit II are connected through a four-way joint 15, and valves are arranged at four outlets of the four-way joint and used for controlling the on-off of each pipeline.
Wherein, the memory alloy driving piece and the spiral memory alloy are both made of nickel-titanium alloy wires with the diameter of 0.8 mm.
In the heat dissipation process of the hydrogen fuel cell stack heat dissipation system, the cooling liquid drives the working medium of the cooling liquid to flow in the pipeline through the circulating pump. Under the drive of a circulating pump, cooling liquid firstly flows out of a cooling liquid storage tank and enters a hydrogen fuel cell stack, and the cooling liquid absorbs heat emitted by heating elements in the hydrogen fuel cell stack; the working medium of the cooling liquid after absorbing heat has higher temperature and is sequentially introduced into the hot water tank and the fins of the radiator for cooling; under the drive of high temperature in the hot water tank, the reaction force generated by the memory alloy deformation recovery effect drives the rotating shaft of the driving belt wheel to drive the fan connected with the driven belt wheel to rotate, so that the absorbed heat of the heating element is utilized to cool the cooling liquid flowing through the radiator; the cooling liquid flows out from the radiating fins after being cooled and returns to the cooling liquid storage tank. The utility model discloses utilized memory alloy to drive the fan rotation when taking place the shape and resume the great power that produces to reach energy-conserving purpose. In addition, in view of the characteristics of the memory alloy, after the heat source stops radiating, the fan can still continue to work under the driving of the waste heat, so that the waste heat in the system is dissipated, and the service life of each component is prolonged.
The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. A hydrogen fuel cell thermal management system based on shape memory alloy is characterized in that: including the cooling pipeline who link up the hydrogen fuel cell pile, be equipped with coolant liquid holding vessel, circulating pump in proper order on the cooling pipeline and utilize memory alloy deformation to make the heat abstractor of drive power, heat abstractor's coolant liquid export and the coolant liquid import intercommunication of hydrogen fuel cell pile, the high temperature coolant liquid export of hydrogen fuel cell pile is through coolant liquid holding vessel and cooling pipeline and circulating pump's import intercommunication respectively.
2. The shape memory alloy-based hydrogen fuel cell thermal management system according to claim 1, wherein: a three-way valve is arranged on a cooling pipeline between the circulating pump and the heat dissipation device, an inlet of the three-way valve is connected with an outlet of the circulating pump, a first outlet of the three-way valve is connected with a first branch, a second outlet of the three-way valve is connected with a cooling liquid inlet of the heat dissipation device, a deionizer is arranged on the first branch, and an outlet end of the first branch is communicated with the cooling liquid inlet of the hydrogen fuel cell stack; the three-way valve is internally provided with a spiral memory alloy and is used for controlling the communication between the first outlet and the heat dissipation device when the cooling liquid is at a high temperature and the communication between the second outlet and the first branch circuit when the cooling liquid is at a low temperature.
3. The shape memory alloy-based hydrogen fuel cell thermal management system according to claim 2, wherein: the three-way valve comprises a shell, and a valve shaft, a valve plate, a push rod, a spring and spiral memory alloy which are arranged in the shell, wherein the spring and the spiral memory alloy are respectively arranged on the upper side and the lower side of the valve plate; the shell is in a cone shape, the first outlet is arranged in the middle of the side wall of the shell, and the second outlet is arranged at the top of the shell; the central axis of the push rod coincides with the central axis of the spring, the push rod is arranged above the valve shaft, the lower part of the push rod is fixedly connected with the valve plate, and the spring is sleeved on the upper part of the push rod; the push rod comprises a cover plate for plugging the second outlet and a push shaft externally sleeved with a spring, the spiral memory alloy is sleeved on the valve shaft, the upper end of the spiral memory alloy is fixedly connected with the lower end of the push shaft, and the lower end of the spiral memory alloy is fixedly connected with the valve shaft; the valve shaft and the push rod are both hollow tubes, a liquid inlet is formed in the lower end of the valve shaft, a liquid outlet communicated with the inner cavity of the shell below the valve plate is formed in the upper end of the valve shaft, an opening in the upper end of the push shaft is formed below the cover plate and communicated with the second outlet, and an outlet in the lower end of the push shaft is opposite to the liquid outlet of the valve shaft; the edge of the valve plate is a conical surface and is used for plugging the first outlet on the side surface of the shell.
4. The shape memory alloy-based hydrogen fuel cell thermal management system according to claim 3, wherein: the middle part of the valve plate is provided with a bulge, and the periphery of the bulge is provided with an annular groove; the lower part of the spring is arranged in the groove, and the upper part of the spiral memory alloy is arranged in the convex part.
5. The shape memory alloy-based hydrogen fuel cell thermal management system according to claim 2, wherein: the cooling system further comprises a second branch for adjusting the temperature of the cooling liquid, wherein a cooler and a heater are arranged on the second branch, and the cooler is an intercooler and used for cooling the cooling liquid; the heater is a PTC water heating heater and is used for heating the cooling liquid in cold weather; and the inlet of the second branch is respectively communicated with the cooling liquid outlet of the heat dissipation device and the outlet end of the first branch, and the outlet of the second branch is communicated with the inlet of the circulating pump through a cooling pipeline.
6. A shape memory alloy based hydrogen fuel cell thermal management system according to any of claims 1-5, wherein: the heat dissipation device comprises a hot water tank, a radiator, a fan and a driving mechanism for driving the fan to rotate, wherein the fan corresponds to the radiator and is arranged outside the hot water tank; the driving mechanism comprises a driving belt wheel, a driven belt wheel, a conveying belt and a memory alloy driving piece for driving the driving belt wheel; the driven belt wheel is coaxially fixed with a rotating shaft of the fan, the driving belt wheel is connected with the driven belt wheel through a conveying belt, and the rotating shafts of the driving belt wheel and the driven belt wheel are respectively connected with two ends of a connecting rod; the memory alloy driving part is connected with the driving belt wheel and arranged in the hot water tank.
7. The shape memory alloy-based hydrogen fuel cell thermal management system according to claim 6, wherein: the memory alloy driving part is in a long strip shape, the driving belt wheel is coaxially fixed with the impeller, the memory alloy driving part is radially fixed on the impeller, and the tail end of the memory alloy driving part is provided with a shifting piece.
8. The shape memory alloy-based hydrogen fuel cell thermal management system according to claim 6, wherein: the two fans are symmetrically arranged on two sides of the radiator.
9. The shape memory alloy-based hydrogen fuel cell thermal management system according to claim 6, wherein: the radiator is a finned radiator.
10. The shape memory alloy-based hydrogen fuel cell thermal management system according to claim 9, wherein: and a cooling liquid outlet of the radiator is communicated with a cooling liquid storage tank through a first branch, and a cooling liquid outlet of the hydrogen fuel cell stack is communicated with the cooling liquid storage tank through a second branch.
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| CN202021379582.6U CN212676312U (en) | 2020-07-14 | 2020-07-14 | Hydrogen fuel cell thermal management system based on shape memory alloy |
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| CN202021379582.6U CN212676312U (en) | 2020-07-14 | 2020-07-14 | Hydrogen fuel cell thermal management system based on shape memory alloy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114739165A (en) * | 2022-04-15 | 2022-07-12 | 李光超 | Decarbonization of yellow phosphorus ore calcines system |
| CN114883598A (en) * | 2022-06-17 | 2022-08-09 | 苏州氢洁电源科技有限公司 | Fuel cell thermal management system and thermal management method |
-
2020
- 2020-07-14 CN CN202021379582.6U patent/CN212676312U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114739165A (en) * | 2022-04-15 | 2022-07-12 | 李光超 | Decarbonization of yellow phosphorus ore calcines system |
| CN114739165B (en) * | 2022-04-15 | 2024-04-19 | 襄阳高隆磷化工有限责任公司 | Decarbonization calcining system of yellow phosphorus ore |
| CN114883598A (en) * | 2022-06-17 | 2022-08-09 | 苏州氢洁电源科技有限公司 | Fuel cell thermal management system and thermal management method |
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