CN102637885A - Cooling system and fuel cell stack - Google Patents
Cooling system and fuel cell stack Download PDFInfo
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- CN102637885A CN102637885A CN2012101291537A CN201210129153A CN102637885A CN 102637885 A CN102637885 A CN 102637885A CN 2012101291537 A CN2012101291537 A CN 2012101291537A CN 201210129153 A CN201210129153 A CN 201210129153A CN 102637885 A CN102637885 A CN 102637885A
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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
The invention provides a cooling system and a fuel cell stack. The cooling system comprises a liquid inlet pipe, multiple liquid inlet branch pipes, a liquid outlet pipe and multiple liquid outlet branch pipes, wherein the liquid inlet pipe comprises a liquid inlet main pipe which is provided with liquid inlets at an upstream end, the liquid inlets are arranged at two ends of the liquid inlet main pipe, the multiple liquid inlet branch pipes are connected between the liquid inlet main pipe and a fuel cell stack body; the liquid outlet pipe is provided with a liquid outlet at a downstream end, the liquid outlet is arranged at the middle part of the liquid outlet pipe; and multiple liquid outlet branch pipes are connected between the liquid outlet main pipe and the fuel cell stack body, wherein the liquid outlet is connected with the liquid inlets through a circulation loop so as to form a cooling circulation loop of the fuel cell. The cooling system and the fuel cell stack provided by the invention can effectively solve the problem of uneven temperature distribution between a single battery of a fuel stack end plate and a single battery of a middle position in the prior art.
Description
Technical field
The present invention relates to fuel cell cooling technology field, in particular to a kind of cooling system and fuel cell pack.
Background technology
Fuel cell is a kind of electrochemical reaction appts, can be directly, the chemical energy of realization response thing and the conversion between the electric energy efficiently.Fuel cell have the energy conversion efficiency height, pollution-free, can supply power continuously, the reliability advantages of higher, be widely used in fields such as Aero-Space, military affairs, electric automobile, uninterrupted power supply.
In the fuel cell of prior art, fuel is continuously imported anode (negative pole), and negative electrode (positive pole) is continuously imported in the simultaneous oxidation agent, on two electrodes, electrochemical reaction takes place, and produces electric current.The basic physical structure of fuel cell is made up of the electrode layer on dielectric substrate and both sides thereof.Wherein there is best working temperature in electrolyte, is about 80 ℃ like the electrolytical optimum working temperature of Proton Exchange Membrane Fuel Cells.
There are bigger temperature contrast in the end plate single battery of battery pile and center single battery; Pile the gas feed temperature of end plate single battery and gas feed temperature and the out temperature gradient that the out temperature gradient all will be lower than the center single battery like proton membrane fuel battery; Cause end plate single battery performance to quicken decay, reduced the useful life of entire cell heap.
Summary of the invention
The present invention aims to provide a kind of cooling system and fuel cell pack, with the problem that temperature distributing disproportionation is spared between battery pile end plate single battery and the centre position single battery in the solution prior art.
To achieve these goals, according to an aspect of the present invention, a kind of cooling system is provided, comprising: feed tube comprises: feed liquor is responsible for, and has the inlet that is positioned at upstream extremity, and inlet is positioned at the two ends that feed liquor is responsible for; A plurality of feed liquor arms are connected between the feed liquor person in charge and the fuel cell reator body; Drain pipe comprises: fluid is responsible for, and has the liquid outlet that is positioned at downstream, and liquid outlet is positioned at the middle part that fluid is responsible for; A plurality of fluid arms are connected between the fluid person in charge and the fuel cell reator body, and wherein, liquid outlet links to each other with inlet to form the cooling circuit of fuel cell through circulation circuit.
Further, it is one or two that feed liquor is responsible for, and feed liquor is responsible for a side or the relative both sides that are arranged on the fuel cell reator body.
Further; Every feed liquor is responsible for and is included first pipeline section and second pipeline section; First pipeline section and second pipeline section all extend towards the middle part along stacking direction of fuel cell reator body from the end plate of fuel cell reator body; First pipeline section and second pipeline section each other away from the end on respectively be provided with an inlet, wherein, be connected between first pipeline section and second pipeline section or isolated.
Further, feed liquor is responsible for when being one, and fluid is responsible for the opposite side with respect to the feed liquor person in charge that is arranged on the fuel cell reator body, and feed liquor is responsible for when being two, and fluid is responsible for the below, middle part, bottom surface that is arranged on the fuel cell reator body.
Further, cooling system of the present invention also comprises: be connected to register, coolant feed pump and heat exchanger between the inlet that is exported to feed tube of drain pipe in turn.
According to another aspect of the present invention, a kind of fuel cell pack is provided also, has comprised fuel cell reator body and the cooling system that is connected with the fuel cell reator body, cooling system is above-mentioned cooling system.
Further; The fuel cell reator body comprises a plurality of stacked inferior battery pile; Each inferior battery pile includes a plurality of bipolar plates and is arranged on the membrane electrode assembly between two adjacent bipolar plates; Has coolant flow field on the side of membrane electrode assembly dorsad at least one bipolar plates in two bipolar plates that are in contact with one another in two adjacent inferior battery pile; Coolant flow field comprises coolant entrance and coolant outlet, and the feed liquor arm is connected with coolant entrance, and the fluid arm is connected with coolant outlet.。
Further; The fuel cell reator body comprises a plurality of stacked inferior battery pile, and each inferior battery pile includes a plurality of bipolar plates and is arranged on the membrane electrode assembly between two adjacent bipolar plates, is provided with coldplate between two adjacent inferior battery pile; Has coolant flow field at least one side of coldplate; Coolant flow field comprises coolant entrance and coolant outlet, and the feed liquor arm is connected with coolant entrance, and the fluid arm is connected with coolant outlet.
Further, coolant flow field comprises: the coolant entrance passage has the coolant entrance of the upstream extremity that is positioned at coolant flow field; The coolant outlet passage, the coolant outlet with the downstream that is positioned at coolant flow field; Many runner ditches spaced apart and runner ridge, runner ditch and runner ridge extend between coolant entrance passage and coolant outlet passage concurrently.
Further; The surface configuration of runner ditch is the rough surface with roughness of setting; And; The roughness along the rough surface of the runner ditch of the coolant flow field at the middle part of stacking direction of fuel cell reator body is maximum, from the fuel cell reator body along the middle part of stacking direction on the end plate bearing of trend of fuel cell reator body, the roughness of the rough surface of the runner ditch of coolant flow field reduces gradually.
Further; Each coolant flow field includes the area in many cross sections and/or the runner ditch that girth equates; And; The area and/or the girth along the cross section of the runner ditch of the coolant flow field at the middle part of stacking direction of fuel cell reator body are maximum, from the fuel cell reator body along the middle part of stacking direction on the end plate bearing of trend of fuel cell reator body, the area and/or the girth in the cross section of the runner ditch of coolant flow field reduce gradually.
Further, on the bearing of trend of coolant entrance passage, the area and/or the girth in the cross section of the runner ditch in the middle of being positioned in many runner ditches are maximum, and reduce gradually at area and/or the girth towards the cross section of the direction upper runner ditch of both sides.
Further, coolant entrance and coolant outlet are one, and coolant entrance and coolant outlet are respectively near the position at two diagonal angles of bipolar plates; Perhaps, coolant entrance is two, and coolant outlet is one, and two coolant entrances lay respectively at two ends of coolant entrance passage, and coolant outlet is positioned at the middle part of coolant outlet passage.
Further; The surface configuration of runner ditch is the rough surface with roughness of setting; And; On the bearing of trend of coolant entrance passage, the runner ditch in the middle of being positioned in many runner ditches the roughness of rough surface maximum, and reduce gradually in roughness towards the rough surface of the direction upper runner ditch of both sides.
In technical scheme of the present invention, cooling system comprises: feed tube and drain pipe, liquid outlet links to each other with inlet to form the cooling circuit of fuel cell through circulation circuit.Feed tube comprises: feed liquor is responsible for and the feed liquor arm, and feed liquor is responsible for has the inlet that is positioned at upstream extremity, and inlet is positioned at the two ends that feed liquor is responsible for, and a plurality of feed liquor arms are connected between the feed liquor person in charge and the fuel cell reator body; Drain pipe comprises: fluid is responsible for and a plurality of fluid arm, and fluid is responsible for has the liquid outlet that is positioned at downstream, and liquid outlet is positioned at the middle part that fluid is responsible for, and a plurality of fluid arms are connected between the fluid person in charge and the fuel cell reator body.
In technique scheme, inlet is arranged on the two ends that feed liquor is responsible for, and liquid outlet is arranged on the middle part that fluid is responsible for; To form double Z shaped structure, utilize Z type structure to have the characteristic that big pressure reduction changes, two big end matchings of Z type structure runner pressure reduction are placed altogether the centre position of fuel cell reator body; Increase the flow velocity of the interior cooling agent of feed liquor arm in fuel cell reator body centre position; Like this, the feed liquor arm of the single battery in centre position and the pressure reduction between the fluid are maximum, and; Reduce gradually along pressure reduction on the direction of battery pile end plate from middle position; Like this, realized that thermal diffusion relatively poor relatively single battery in centre position cools off quickly, and then solved in the prior art the even problem of temperature distributing disproportionation between the battery pile end plate single battery and centre position single battery effectively.
Description of drawings
The Figure of description that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows according to the embodiment one of cooling system of the present invention and the sketch map that is connected of fuel cell reator body;
Fig. 2 shows the pressure reduction distribution schematic diagram of cooling system between feed liquor arm on the stacking direction of fuel cell reator body and fluid arm of Fig. 1;
Fig. 3 shows according to the embodiment two of cooling system of the present invention and the sketch map that is connected of fuel cell reator body;
Fig. 4 shows the decomposition texture sketch map according to fuel cell reator body among the embodiment of fuel cell pack of the present invention;
Fig. 5 shows a kind of sketch map of structure of coldplate of the fuel cell reator body of Fig. 4;
Fig. 6 shows the sketch map of another kind of structure of coldplate of the fuel cell reator body of Fig. 4;
Fig. 7 shows the connection sketch map of the cooling system of Fig. 1.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the present invention.
As shown in Figure 1, the cooling system of embodiment one comprises: feed tube and drain pipe, liquid outlet links to each other with inlet to form the cooling circuit of fuel cell through circulation circuit.Wherein, feed tube comprises: the feed liquor person in charge 50 and feed liquor arm 52, and feed liquor is responsible for 50 and is had two inlets that are positioned at upstream extremity, and inlet is positioned at feed liquor and is responsible for 50 two ends; A plurality of feed liquor arms 52 are connected between the feed liquor person in charge 50 and the fuel cell reator body 1; Drain pipe comprises: the fluid person in charge 51 and fluid arm 53, and fluid is responsible for 51 and is had the liquid outlet that is positioned at downstream, and this liquid outlet is positioned at fluid and is responsible for 51 middle part; A plurality of fluid arms 53 are connected between the fluid person in charge 51 and the fuel cell reator body 1.
In the present embodiment, inlet is arranged on feed liquor is responsible for 50 two ends, and liquid outlet is arranged on the fluid person in charge 51 middle part; To form double Z shaped structure, utilize Z type structure to have the characteristic that big pressure reduction changes, two big end matchings of Z type structure runner pressure reduction are placed altogether the centre position of fuel cell reator body; Increase the flow velocity of the interior cooling agent of feed liquor arm in fuel cell reator body centre position, like this, the feed liquor arm of the single battery in centre position and the pressure reduction between the fluid are maximum; And, reduce gradually along pressure reduction on the direction of battery pile end plate from middle position, as illustrated in fig. 1 and 2; In Fig. 1 and 2, the P at inlet place
InThe expression feed liquor is responsible for the pressure in 50, the P at liquid outlet place
OutThe expression fluid is responsible for the pressure in 51, and L is the stack length of fuel cell reator body, and Δ P representes pressure reduction.
Like this, realized that thermal diffusion relatively poor relatively single battery in centre position cools off quickly, and then solved in the prior art the even problem of temperature distributing disproportionation between the battery pile end plate single battery and centre position single battery effectively.
The feed liquor person in charge 50 can be one or two in the feed tube; Among the embodiment one shown in Fig. 1, it is one that feed liquor is responsible for 50, and this feed liquor person in charge 50 is arranged on a side of fuel cell reator body 1; A feed liquor is responsible for 50 and is comprised the first pipeline section 50a and the second pipeline section 50b; The first pipeline section 50a and the second pipeline section 50b all extend towards the middle part along stacking direction of fuel cell reator body 1 from the end plate of fuel cell reator body 1, the first pipeline section 50a and the second pipeline section 50b each other away from the end be provided with an inlet, this inlet is near two end plates of fuel cell reator body 1; Wherein, be connected between the first pipeline section 50a and the second pipeline section 50b or isolated.At this moment, the fluid person in charge 51 is arranged on the opposite side with respect to the feed liquor person in charge 50 of fuel cell reator body 1.The feed liquor person in charge 50 and the fluid person in charge 51 are positioned at the position of two opposite side of fuel cell reator body 1.The turnover mode of coolant can be to go out under enterprising, also can adopt down.
In embodiment one, as shown in Figure 1, feed tube is connected with the coldplate 16 of fuel cell reator body 1 with drain pipe, and further, feed tube is connected with the coolant flow field of drain pipe with the coldplate 16 of fuel cell reator body 1.Perhaps in other not shown embodiment, the fuel cell reator body does not have coldplate, and in not having the fuel cell reator body of coldplate, feed tube is connected with the bipolar plates of drain pipe with the fuel cell reator body.Further, feed tube is connected with the coolant flow field of drain pipe with bipolar plates 12.
As shown in Figure 3; In embodiment two, feed liquor is responsible for 50 also can be two, and two feed liquor persons in charge 50 are separately positioned on the relative both sides of fuel cell reator body 1; Every feed liquor is responsible for 50 and is included first pipeline section and second pipeline section; First pipeline section and second pipeline section all extend towards the middle part along stacking direction of fuel cell reator body 1 from the end plate of fuel cell reator body 1, first pipeline section and second pipeline section each other away from the end on be provided with an inlet accordingly, this inlet is near the end plate of fuel cell reator body 1; Wherein, be connected between first pipeline section and second pipeline section or isolated.At this moment, the fluid person in charge 51 is arranged on the bottom surface of fuel cell reator body 1.
Embodiment according to fuel cell pack of the present invention comprises fuel cell reator body and the cooling system that is connected with the fuel cell reator body, and cooling system is above-mentioned cooling system.As shown in Figure 4, the fuel cell reator body comprises a plurality of stacked inferior battery pile 18 and the end plate 11 that is arranged on 18 two ends of a plurality of inferior battery pile, and inferior battery pile 18 can be made up of a single battery; Comprise two bipolar plates and be arranged on a membrane electrode assembly between two bipolar plates, perhaps, inferior battery pile 18 also can be made up of a plurality of single batteries; Such as, in the present embodiment, as shown in Figure 4; Each inferior battery pile 18 includes two single batteries, particularly, comprises three bipolar plates 12 and two membrane electrode assemblies 15; Membrane electrode assembly 15 is arranged between two adjacent bipolar plates 12; Positive pole and negative reaction gas flow 13 are arranged between two adjacent bipolar plates 12, between bipolar plates 12 and membrane electrode assembly 15, are provided with sealing ring 14, are provided with coldplate 16 between two adjacent inferior battery pile 18; Have coolant flow field 17 at least one side of coldplate 16, feed liquor arm 52 all is connected with coldplate 16 with fluid arm 53.
In not shown embodiment; The fuel cell reator body comprises a plurality of stacked inferior battery pile; Each inferior battery pile includes a plurality of bipolar plates and is arranged on the membrane electrode assembly between two adjacent bipolar plates; Have coolant flow field 17 on the side of membrane electrode assembly 15 dorsad at least one bipolar plates in two bipolar plates that are in contact with one another in two adjacent inferior battery pile, the feed liquor arm all is connected with bipolar plates with the fluid arm.
Coolant flow field can be arranged on coldplate 16 or the bipolar plates 12, and this coolant flow field comprises: coolant entrance passage 121, coolant outlet passage 122, many runner ditches 123 spaced apart and runner ridge 124.Wherein, coolant entrance passage 121 has the coolant entrance of the upstream extremity that is positioned at coolant flow field; Coolant outlet passage 122 has the coolant outlet of the downstream that is positioned at coolant flow field, and many runner ditches 123 spaced apart and runner ridge 124 extend between coolant entrance passage 121 and coolant outlet passage 122 concurrently; Preferred embodiment the most a kind of, coolant outlet passage 122 is parallel to coolant entrance passage 121, and runner ditch 123 and runner ridge 124 are all perpendicular to coolant entrance passage 121.
A kind of preferred embodiment in; The surface configuration of runner ditch 123 is the rough surface with roughness of setting; And; The roughness along the rough surface of the runner ditch 123 of the coolant flow field at the middle part of stacking direction of fuel cell reator body 1 is maximum, from the fuel cell reator body along the middle part of stacking direction on the end plate bearing of trend of fuel cell reator body, the roughness of the rough surface of the runner ditch 123 of coolant flow field reduces gradually.In the heat transfer process that no phase transformation takes place, the runner wall that roughness is big can promote the convection current of boundary layer fluid to mix, and improves heat exchange rate.Simultaneously, the runner wall that roughness is big helps increasing heat exchange area.In the heat transfer process that gas-liquid phase transition takes place, the runner inner surface that roughness is big can promote the forming core of cenotype, accelerates the suction exothermic process of phase transformation, improves heat exchange rate.Runner ditch 123 roughness along the coolant flow field at the middle part of stacking direction of fuel cell reator body 1 are maximum; Help the relatively poor relatively single battery of middle heat diffusion and cool off quickly, and then help uniformity of temperature profile between battery pile end plate single battery and the centre position single battery.
In another preferred embodiment; Each coolant flow field includes the area in many cross sections and/or the runner ditch 123 that girth equates; And; The area and/or the girth along the cross section of the runner ditch 123 of the coolant flow field at the middle part of stacking direction of fuel cell reator body are maximum, from the fuel cell reator body along the middle part of stacking direction on the end plate bearing of trend of fuel cell reator body, the area and/or the girth in the cross section of the runner ditch 123 of coolant flow field reduce gradually.Said structure has increased relatively poor relatively single battery coolant rate or the heat exchange area of middle heat diffusion effectively; Help the relatively poor relatively single battery of middle heat diffusion and cool off quickly, and then help uniformity of temperature profile between battery pile end plate single battery and the centre position single battery.
In another preferred embodiment; Be directed to the even cooling of each single battery; Particularly; On the bearing of trend of coolant entrance passage 121, the area and/or the girth in the cross section of the runner ditch 123 in the middle of being positioned in many runner ditches 123 are maximum, and reduce gradually at area and/or the girth towards the cross section of the direction upper runner ditch 123 of both sides.Above-mentioned flow field has increased the coolant rate or the heat exchange area of single battery center effectively, and the center that makes cooling effect be not so good as the edge is cooled off faster, and then makes the Temperature Distribution of each single battery more even.
When the person in charge of the feed liquor in the feed tube 50 is one; Like Fig. 1 and shown in Figure 5; The coolant entrance of the coolant flow field of coldplate 16 or bipolar plates 12 and coolant outlet are one, and coolant entrance and coolant outlet are respectively near the position at two diagonal angles of bipolar plates 12.
When the person in charge of the feed liquor in the feed tube 50 is two; Like Fig. 3 and shown in Figure 6; The coolant entrance of the coolant flow field of coldplate 16 or bipolar plates 12 is two; Coolant outlet is one, and two coolant entrances lay respectively at two ends of coolant entrance passage 121, and coolant outlet is positioned at the middle part of coolant outlet passage 122.
Preferably; The surface configuration of runner ditch 123 is the rough surface with roughness of setting; And; On the bearing of trend of coolant entrance passage 121, the roughness of the rough surface of the runner ditch 123 in the middle of being positioned in many runner ditches 123 is maximum, and reduces gradually in the roughness towards the rough surface of the direction upper runner ditch 123 of both sides.As preferred embodiment a kind of, adopt coarse runner wall in the position that the heat radiation of the center of the single battery of fuel cell reator body is slow, adopt smooth runner wall in the position that the thermal diffusion of fuel cell edge is fast.In the heat transfer process that no phase transformation takes place, the runner wall that roughness is big can promote the convection current of boundary layer fluid to mix, and improves heat exchange rate.Simultaneously, the runner wall that roughness is big helps increasing heat exchange area.In the heat transfer process that gas-liquid phase transition takes place, the runner inner surface that roughness is big can promote the forming core of cenotype, accelerates the suction exothermic process of phase transformation, improves heat exchange rate.
The variation tendency of roughness comprises but is not limited to the variation pattern of successional variation pattern and noncontinuity (ladder property).Said method may cause runner ditch internal pressure loss to increase, and reduces the flow of cooling fluid in the runner ditch, and actual cooling effect is relevant with roughness.
The method of change runner roughness comprises but is not limited to adopt the method for hot investment casting or machining being processed to form groove on the bottom surface of runner ditch 123 and/or on the relative side of adjacent fluid channels ridge 124.And change on the bottom surface of runner ditch 123 through the density degree that changes groove and/or the roughness on the relative side of adjacent fluid channels ridge 124.Generally, on the bearing of trend of coolant entrance passage 121, the groove pitch of the runner ditch 123 in the middle of being positioned at is minimum, and increases gradually in the spacing towards the groove of the direction upper runner ditch of both sides.
As shown in Figure 7, fuel cell reator body 1 is connected to heat exchanger 2, coolant delivery pump 3 and register 4 respectively through circulation line 5.Wherein, air cooling blower fan 6 is used for cold wind to heat exchanger 2 being provided.Fuel cell reator body 1 can be any fuel stack body that can produce power, like proton membrane fuel battery reator body or DMFC reator body etc.
Heat exchanger 2 can select for use air or water as the cold junction medium, and as in certain embodiments, the cold junction medium can be dry air or humid air.And in other embodiments, the cold junction medium can be the water or the aqueous solution.The type of cooling of heat exchanger can adopt water-water cooling or water-air cooling but, also can adopt water-water-water cooling or water-water-air cooling but.Register 4 is used to regulate the temperature of the coolant that gets into fuel cell; Mainly comprise temperature sensor, control element and executive component; Wherein temperature sensor can be but be not limited to thermocouple; Control element can be for having electronic system or the special control system of the cooling of integrated platform and fuel cell, and executive component comprises cooling element and heating element or one of them.
The coolant that is used for the fuel cell reator body can be the fluid that can carry heat of any kind, and as in certain embodiments, fluid cooling media can be the combination of pure water or water and additive.And in other embodiments, fluid cooling media can be a liquid metal, for example, and based on the low-melting alloy of gallium indium.In certain embodiments, fluid cooling media experiences gas-liquid phase transition when heat exchange, and in other embodiments, fluid cooling media does not undergo phase transition.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. a cooling system is characterized in that, comprising:
Feed tube comprises:
Feed liquor is responsible for (50), has the inlet that is positioned at upstream extremity, and said inlet is positioned at the two ends that said feed liquor is responsible for (50);
A plurality of feed liquor arms (52) are connected said feed liquor and are responsible between (50) and the fuel cell reator body (1); Drain pipe comprises:
Fluid is responsible for (51), has the liquid outlet that is positioned at downstream, and said liquid outlet is positioned at the middle part that said fluid is responsible for (51);
A plurality of fluid arms (53) are connected said fluid and are responsible between (51) and the said fuel cell reator body (1),
Wherein, said liquid outlet links to each other to form the cooling circuit of said fuel cell with said inlet through circulation circuit.
2. cooling system according to claim 1 is characterized in that, it is one or two that said feed liquor is responsible for (50), and said feed liquor is responsible for a side or the relative both sides that (50) are arranged on said fuel cell reator body (1).
3. cooling system according to claim 2; It is characterized in that; Every feed liquor is responsible for (50) and is included first pipeline section (50a) and second pipeline section (50b); Said first pipeline section (50a) and said second pipeline section all extend towards the middle part along stacking direction of said fuel cell reator body (1) from the end plate of said fuel cell reator body (1); Said first pipeline section (50a) and second pipeline section (50b) each other away from the end on respectively be provided with a said inlet, wherein, be connected between said first pipeline section and said second pipeline section or isolated.
4. cooling system according to claim 2; It is characterized in that; When the said feed liquor person in charge (50) is one; Said fluid is responsible for the opposite side with respect to the said feed liquor person in charge (50) that (51) are arranged on said fuel cell reator body (1), and when the said feed liquor person in charge (50) was two, said fluid was responsible for the below, middle part, bottom surface that (51) are arranged on said fuel cell reator body (1).
5. cooling system according to claim 1 is characterized in that, also comprises: be connected to register (4), coolant feed pump (3) and heat exchanger (2) between the inlet that is exported to said feed tube of said drain pipe in turn.
6. a fuel cell pack comprises fuel cell reator body and the cooling system that is connected with said fuel cell reator body, it is characterized in that, said cooling system is each described cooling system in the claim 1 to 5.
7. fuel cell pack according to claim 6; It is characterized in that; Said fuel cell reator body comprises a plurality of stacked inferior battery pile (18); Each said inferior battery pile (18) includes a plurality of bipolar plates (12) and is arranged on the membrane electrode assembly (15) between adjacent two bipolar plates (12); Has coolant flow field on the side of said dorsad membrane electrode assembly (15) at least one bipolar plates (12) in two bipolar plates (12) that are in contact with one another in adjacent two said inferior battery pile (18); Said coolant flow field comprises coolant entrance and coolant outlet, and the feed liquor arm (52) of said cooling system is connected with said coolant entrance, and the fluid arm (53) of said cooling system is connected with said coolant outlet.
8. fuel cell pack according to claim 6; It is characterized in that; Said fuel cell reator body comprises a plurality of stacked inferior battery pile (18); Each said inferior battery pile (18) includes a plurality of bipolar plates (12) and is arranged on the membrane electrode assembly (15) between adjacent two bipolar plates (12); Be provided with coldplate (16) between adjacent two said inferior battery pile (18), have coolant flow field at least one side of said coldplate (16), said coolant flow field comprises coolant entrance and coolant outlet; The feed liquor arm (52) of said cooling system is connected with said coolant entrance, and the fluid arm (53) of said cooling system is connected with said coolant outlet.
9. according to claim 7 or 8 described fuel cell pack cooling systems, it is characterized in that said coolant flow field also comprises: coolant entrance passage (121) has the said coolant entrance of the upstream extremity that is positioned at said coolant flow field; Coolant outlet passage (122), the said coolant outlet with the downstream that is positioned at said coolant flow field; Many runner ditches (123) spaced apart and runner ridge (124), said runner ditch (123) and runner ridge (124) extend between said coolant entrance passage (121) and said coolant outlet passage (122) concurrently.
10. fuel cell pack according to claim 9; It is characterized in that; The surface configuration of said runner ditch (123) is the rough surface with roughness of setting; And; The roughness along the rough surface of the runner ditch (123) of the coolant flow field at the middle part of stacking direction of said fuel cell reator body (1) is maximum, from said fuel cell reator body (1) along the middle part of stacking direction on the end plate bearing of trend of said fuel cell reator body (1), the roughness of the rough surface of the runner ditch (123) of coolant flow field reduces gradually.
11. fuel cell pack according to claim 9; It is characterized in that; Each said coolant flow field includes the area in many cross sections and/or the said runner ditch (123) that girth equates; And; The area and/or the girth along the cross section of the runner ditch (123) of the coolant flow field at the middle part of stacking direction of said fuel cell reator body (1) are maximum, from said fuel cell reator body (1) along the middle part of stacking direction on the end plate bearing of trend of said fuel cell reator body (1), the area and/or the girth in the cross section of the runner ditch (123) of coolant flow field reduce gradually.
12. fuel cell pack according to claim 9; It is characterized in that; On the bearing of trend of said coolant entrance passage (121); The area in the cross section of the said runner ditch (123) in the middle of being positioned in said many runner ditches (123) and/or girth are maximum, and reduce gradually at area and/or the girth towards the cross section of the above runner ditch (123) of direction of both sides.
13. fuel cell pack according to claim 12 is characterized in that, said coolant entrance and said coolant outlet are one, and a said coolant entrance and coolant outlet are respectively near the position at two diagonal angles of said bipolar plates (12); Perhaps, said coolant entrance is two, and said coolant outlet is one, and said two coolant entrances lay respectively at two ends of said coolant entrance passage (121), and said coolant outlet is positioned at the middle part of said coolant outlet passage (122).
14. fuel cell pack according to claim 9; It is characterized in that; The surface configuration of said runner ditch (123) is the rough surface with roughness of setting, and, on the bearing of trend of said coolant entrance passage (121); The roughness of the rough surface of the said runner ditch (123) in the middle of being positioned in said many runner ditches (123) is maximum, and reduces gradually in the roughness towards the rough surface of the above runner ditch (123) of direction of both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101291537A CN102637885A (en) | 2012-04-27 | 2012-04-27 | Cooling system and fuel cell stack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101291537A CN102637885A (en) | 2012-04-27 | 2012-04-27 | Cooling system and fuel cell stack |
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| CN102637885A true CN102637885A (en) | 2012-08-15 |
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| CN2012101291537A Pending CN102637885A (en) | 2012-04-27 | 2012-04-27 | Cooling system and fuel cell stack |
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| CN105633505A (en) * | 2016-03-18 | 2016-06-01 | 重庆长安汽车股份有限公司 | Power battery liquid-cooling apparatus |
| CN106784932A (en) * | 2016-12-30 | 2017-05-31 | 浙江省能源与核技术应用研究院 | Fuel cell unit |
| CN108306028A (en) * | 2018-02-24 | 2018-07-20 | 广东国鸿氢能科技有限公司 | A kind of conversion equipment, fuel cell pile test device and test method |
| CN109904483A (en) * | 2019-03-01 | 2019-06-18 | 山东大学 | Fuel battery double plates flow field, bipolar plates and electric pile structure |
| CN112190274A (en) * | 2020-09-09 | 2021-01-08 | 武汉中科医疗科技工业技术研究院有限公司 | Imaging device, liquid separation cooling device and layout method thereof |
| CN112952135A (en) * | 2019-12-11 | 2021-06-11 | 未势能源科技有限公司 | Cooling flow field device and fuel cell |
| CN114447362A (en) * | 2020-11-05 | 2022-05-06 | 未势能源科技有限公司 | Electrochemical device |
| CN114497669A (en) * | 2022-01-25 | 2022-05-13 | 广东国鸿氢能科技有限公司 | Fuel cell stack structure and assembling method thereof |
| KR20220132181A (en) * | 2021-03-23 | 2022-09-30 | 한국수력원자력 주식회사 | A fuel cell cooling system |
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| CN109904483B (en) * | 2019-03-01 | 2021-02-05 | 山东大学 | Flow field of bipolar plate of fuel cell, bipolar plate and electric pile structure |
| CN112952135A (en) * | 2019-12-11 | 2021-06-11 | 未势能源科技有限公司 | Cooling flow field device and fuel cell |
| CN112952135B (en) * | 2019-12-11 | 2022-06-28 | 未势能源科技有限公司 | Cooling flow field device and fuel cell |
| CN112190274A (en) * | 2020-09-09 | 2021-01-08 | 武汉中科医疗科技工业技术研究院有限公司 | Imaging device, liquid separation cooling device and layout method thereof |
| CN114447362A (en) * | 2020-11-05 | 2022-05-06 | 未势能源科技有限公司 | Electrochemical device |
| CN114447362B (en) * | 2020-11-05 | 2024-01-26 | 未势能源科技有限公司 | Electrochemical device |
| KR20220132181A (en) * | 2021-03-23 | 2022-09-30 | 한국수력원자력 주식회사 | A fuel cell cooling system |
| KR102558108B1 (en) * | 2021-03-23 | 2023-07-24 | 한국수력원자력 주식회사 | A fuel cell cooling system |
| CN114497669A (en) * | 2022-01-25 | 2022-05-13 | 广东国鸿氢能科技有限公司 | Fuel cell stack structure and assembling method thereof |
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Application publication date: 20120815 |