CN109742420A - A kind of fuel battery double plates of tree-shaped flow field structure - Google Patents
A kind of fuel battery double plates of tree-shaped flow field structure Download PDFInfo
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- CN109742420A CN109742420A CN201811631970.6A CN201811631970A CN109742420A CN 109742420 A CN109742420 A CN 109742420A CN 201811631970 A CN201811631970 A CN 201811631970A CN 109742420 A CN109742420 A CN 109742420A
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
A kind of fuel battery double plates of tree-shaped flow field structure, including anode plate and cathode plate are equipped with anode plate fuel runner, cathode plate oxidant flow channel and cathode plate cooling liquid flowing channel.Anode plate fuel runner, cathode plate oxidant flow channel and cathode plate cooling liquid flowing channel are made of entrance, the tree-shaped flow field of entrance, parallel flow field, the tree-shaped flow field in outlet and outlet.Wherein the tree-shaped flow field of entrance is identical with tree-shaped flow field structure is exported, it is symmetrically connected to the two sides of parallel flow field, its main function is to evenly distribute fuel, oxidant, coolant liquid in bipolar plates, guarantees that fluid is identical in the flow and flow rate of runner, i.e. the pressure drop of guarantee fluid each runner in flow field is identical.The present invention can effectively solve the uniform distribution of fuel in bipolar plates, oxidant and coolant liquid, and air-liquid, the heat management for improving battery are horizontal, promote fuel battery performance.Meanwhile the present invention helps to reduce the pressure drop of reaction gas and coolant liquid, reduces system pump work, lifting system generating efficiency.
Description
Technical field
The present invention relates to field of fuel cell technology, the fuel battery double plates of espespecially a kind of tree-shaped flow field structure.
Background technique
Fuel cell is a kind of without burning, can directly be filled using the efficiency power generation of fuel and oxidant chemical energy
Set, the advantages that due to its energy conversion efficiency height, zero-emission, fast load responding speed, in recent years in power train in vehicle application, distributed supply
It makes substantial progress in terms of the technologies such as energy, backup power source and industrialization.
Fuel battery double plates, also known as collector plate, are the important components of fuel cell, and main function is to separate combustion
Reaction gas, and imported into fuel cell by material and oxidant by flow field, collects and conduct electric current, support membrane electrode and
Undertake heat dissipation and the drain function of entire fuel cell.The flow Field Design of bipolar plates is that Proton Exchange Membrane Fuel Cells is most important
One of research hotspot.The superiority and inferiority in flow field or not directly influence distribution, transmission, water management and the fuel of inside battery reaction gas
Utilization rate, and finally influence the output performance of battery.
The key of bipolar plate flow field design is the uniformity design in flow field, this is because being uniformly distributed for flow field can promote
Catalyst layer reaction gas is uniformly distributed, to make the reaction of effective activation region sufficiently, guarantees that current density and temperature are uniform
Distribution avoids part from generating limiting current density, reduces the loss of voltage caused by concentration polarization, promotes the performance of fuel cell.
Meanwhile flow field uniformity design helps to reduce the pressure drop of reaction gas and coolant liquid, reduces system pump work, lifting system power generation
Efficiency.Therefore the uniformity flow Field Design of bipolar plates is extremely important to fuel cell.In the prior art, such as a kind of tree stream
The dual polar plates of proton exchange membrane fuel cell (number of patent application CN201010299498.8) of field, it is tree-shaped to provide a kind of bipolar plates
Structure flow Field Design scheme, but the flow field structure of the patent only meets fluid under certain flow and uniformly divides in flow field structure
Match.In practical applications once changing flow, deviate design conditions, it is impossible to guarantee fluid evenly distributing in bipolar plates.
Summary of the invention
The object of the present invention is to provide a kind of fuel battery double plates of tree-shaped flow field structure, realize anode plate fuel and
The oxidant of cathode plate evenly distributes, and fuel and oxidant is promoted sufficiently to react in activation of fuel cell region, promotes fuel
Battery performance.
Technical solution provided by the invention is as follows:
A kind of fuel battery double plates of tree-shaped flow field structure, comprising:
Anode plate and cathode plate；
Fuel flow field face of the anode plate close to membrane electrode side is successively arranged along fuel circulating direction: fuel inlet
Tree-shaped flow field, fuel parallel flow field, the tree-shaped flow field of fuel outlet；The fuel for communicating fuel in the fuel parallel flow field
The quantity of parallel channels is 2a；The tree-shaped flow field of fuel inlet and the tree-shaped flow field of the fuel outlet are centrosymmetric and are set to
The both ends of the fuel parallel flow field；The tree-shaped flow field of fuel inlet along fuel circulating direction with first term be 1, common ratio 2
Geometric Sequence arrange that and two fuel channels of next node are with the fuel of the upper node communicated therewith in binary tree
The central axis in channel is symmetric；Minor details fuel in the minor details fuel flow field of fuel parallel flow field setting is logical
The quantity in road is 2a-1, the central axis of a minor details fuel channel is the two fuel parallel channels communicated therewith
Line of symmetry；Wherein, a >=2；And/or
Oxidant flow field face of the cathode plate close to membrane electrode side is successively arranged along oxidant circulating direction: oxidation
The tree-shaped flow field of agent entrance, oxidant parallel flow field, the tree-shaped flow field of oxidant outlet；It is used to flow in the oxidant parallel flow field
The quantity of the oxidant parallel channels of logical oxidant is 2b；The tree-shaped flow field of oxidant inlet and the oxidant outlet are tree-shaped
Flow field, which is centrosymmetric, is set to the both ends of the oxidant parallel flow field；The tree-shaped flow field of oxidant inlet is along oxidant
Circulating direction is with first term for 1, and the Geometric Sequence that common ratio is 2 is arranged in binary tree, and two oxidant channels of next node
It is symmetric with the central axis of the oxidant channel of the upper node communicated therewith；Close to the oxidant parallel flow field
The quantity of minor details oxidant channel in the minor details oxidant flow field of setting is 2b-1, in a minor details oxidant channel
Mandrel line is the line of symmetry of the two oxidant parallel channels communicated therewith, wherein b >=2.
In the technical program, two channels (fuel parallel channels, oxidant parallel channels) of next node be and its
Channel center's axisymmetrical arrangement of a upper node for connection, so that a upper node-flow is to two channels of next node
Distribution situation it is identical, ensure that the tapping condition in two channels of next node is consistent, simultaneously because in next node
Two channels in flow reduce half, fuel and oxidant pressure drop reduce, reduce system pump work, lifting system power generation effect
Rate.Under conditions of identical channel cross-section and same traffic, compared to serpentine channel, passage length of the invention is reduced to 1/
2n(2nFor number of channels), single pass flow velocity is reduced to the 1/2 of serpentine channeln, when fluid is laminar flow in fuel battery inside
When, pressure drop is reduced to the 1/ (2 of serpentine channeln)5, greatly reduce pump work, lifting system generating efficiency.In summary, the present invention is real
Evenly distributing for the oxidant of the fuel and cathode plate of existing anode plate, promotes fuel and oxidant to fill in activation of fuel cell region
Divide reaction, improves fuel battery performance.
It is further preferred that fuel parallel channels and oxidant parallel channels one one or more one or more than one are correspondingly arranged.
In the technical program, in practical applications, fuel parallel channels and oxidant parallel channels can be corresponded and be set
Set, can also for many-one or it is one-to-many be arranged, can specifically be configured according to actual needs, can specifically guarantee fuel
With sufficiently reacting for oxidant, improve based on fuel battery performance.In practical applications, fuel parallel channels are parallel with oxidant
The sectional dimension in channel can be identical also not identical, can specifically be configured according to actual needs, can specifically guarantee fuel with
The abundant reaction of oxidant improves based on fuel battery performance.
It is further preferred that the cathode plate is equipped with coolant liquid flow field far from the coolant liquid flow field face of membrane electrode side.
In the technical program, the cooling and timely heat extraction of cathode plate are realized by coolant liquid flow field, to guarantee bipolar plates
It works under low temperature environment, ensure that fuel battery performance, extend the service life of fuel cell.
It is further preferred that the coolant liquid flow field is successively arranged along coolant liquid circulating direction: coolant inlet tree flow
Field, coolant liquid parallel flow field, the tree-shaped flow field of cooling liquid outlet；The cold of coolant liquid that circulate is used in the coolant liquid parallel flow field
But the quantity of liquid parallel channels is 2c；The tree-shaped flow field of coolant inlet and the tree-shaped flow field of the cooling liquid outlet are in center pair
Claim the both ends for being set to the coolant liquid parallel flow field；The tree-shaped flow field of coolant inlet is along coolant liquid circulating direction with head
It is 1, the Geometric Sequence that common ratio is 2 is in binary tree arrangement, and two cooling passages of next node are to communicate therewith
The central axis of the cooling passage of a upper node is symmetric；Minor details close to coolant liquid parallel flow field setting are cold
But the quantity of the minor details cooling passage in liquid stream field is 2c-1, the central axis of a minor details cooling passage be and its
The line of symmetry of two coolant liquid parallel channels of connection；Wherein, c >=1.
In the technical program, the binary tree in coolant liquid flow field is distributed, ensure that entire cathode plate heat extraction and heat dissipation it is equal
Weighing apparatus property, the temperature consistency of cathode plate is preferable, and the heat management for improving fuel cell is horizontal, avoids because non-uniform temperature is drawn
The part risen generates limiting current density, improves fuel battery performance and service life.
It is further preferred that the position that the anode plate corresponds to the coolant inlet in the tree-shaped flow field of the coolant inlet is set
There is coolant inlet；The position that the anode plate corresponds to the cooling liquid outlet in the tree-shaped flow field of the cooling liquid outlet is equipped with coolant liquid
Outlet.
It is further preferred that the position that the anode plate corresponds to the oxidant inlet in the tree-shaped flow field of oxidant inlet is equipped with oxygen
Agent entrance；The position that the anode plate corresponds to the oxidant outlet in the tree-shaped flow field of oxidant outlet is equipped with oxidant outlet.
It is further preferred that the position that the cathode plate corresponds to the fuel inlet in the tree-shaped flow field of fuel inlet enters equipped with fuel
Mouthful；The position that the cathode plate corresponds to the fuel outlet in the tree-shaped flow field of fuel outlet is equipped with fuel outlet.
A kind of fuel battery double plates of tree-shaped flow field structure provided by the invention, can bring following at least one beneficial
Effect:
1, in the present invention, two channels (fuel parallel channels, oxidant parallel channels) of next node are connected with it
Channel center's axisymmetrical of a logical upper node arranges, so that a upper node-flow is to two channels of next node
Distribution situation is identical, ensure that the tapping condition in two channels of next node is consistent, reduces fuel and oxidant pressure drop,
Reduction system pump work, lifting system generating efficiency.It is logical compared to snakelike under conditions of identical channel cross-section and same traffic
Road, passage length of the invention are reduced to 1/2n(2nFor number of channels), single pass flow velocity is reduced to 1/2n, when fluid is firing
When expecting that inside battery is laminar flow, pressure drop is reduced to the 1/ (2 of serpentine channeln)5, greatly reduce pump work, lifting system generating efficiency.
In summary, the present invention realizes that the fuel of anode plate and the oxidant of cathode plate evenly distribute, and promotes the fuel and oxidant to exist
Activation of fuel cell region is sufficiently reacted, and fuel battery performance is improved.
2, in the present invention, the cooling and timely heat extraction of cathode plate are realized by coolant liquid flow field, to guarantee this bipolar plates
It works under low temperature environment, ensure that fuel battery performance, extend the service life of fuel cell.Further by coolant liquid
Flow field is arranged to binary tree distribution, ensure that the harmony of heat extraction and the heat dissipation of entire cathode plate, the temperature consistency of cathode plate
Preferably, the heat management for improving fuel cell is horizontal, and it is close that the part caused by avoiding because of non-uniform temperature generates carrying current
Degree, improves fuel battery performance and service life.
Detailed description of the invention
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, to the fuel of tree-shaped flow field structure
Above-mentioned characteristic, technical characteristic, advantage and its implementation of cell bipolar plate are further described.
Fig. 1 is a kind of embodiment section figure structure schematic representation of the invention；
Fig. 2 is a kind of example structure schematic diagram of anode plate of the invention；
Fig. 3 is a kind of example structure schematic diagram in the tree-shaped flow field of fuel inlet of anode plate of the invention；
Fig. 4 is a kind of example structure schematic diagram of cathode plate of the invention；
Fig. 5 is another example structure schematic diagram of cathode plate of the invention.
Drawing reference numeral explanation:
1. anode plate, 1-1. fuel boss, 1-2. fuel parallel channels, 2. cathode plates, 2-1. oxidant boss, 2-2. oxygen
Agent parallel channels, 2-3. coolant liquid boss, 2-4. coolant liquid parallel channels, 3. membrane electrodes, 4. fuel inlets, 4 ' fuel go out
Mouthful, 5. oxidant inlets, 5 ' oxidant outlets, 6. coolant inlets, 6 ' cooling liquid outlets, the tree-shaped flow field of 7. fuel inlets,
The tree-shaped flow field father runner of 7-1., 7-2. tree flow ground runner, the tree-shaped flow field grandson runner of 7-3., the 7 ' tree-shaped flow fields of fuel outlet,
8. fuel parallel flow field, the tree-shaped flow field of 9. oxidant inlets, the 9 ' tree-shaped flow fields of oxidant outlet, 10. oxidant parallel flow fields,
11. the tree-shaped flow field of coolant inlet, the 11 ' tree-shaped flow fields of cooling liquid outlet, 12. coolant liquid parallel flow fields.
Specific embodiment
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, Detailed description of the invention will be compareed below
A specific embodiment of the invention.It should be evident that drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, and obtain other embodiments.
To make simplified form, part related to the present invention is only schematically shown in each figure, their not generations
Its practical structures as product of table.In addition, there is identical structure or function in some figures so that simplified form is easy to understand
Component, only symbolically depict one of those, or only marked one of those.Herein, "one" not only table
Show " only this ", can also indicate the situation of " more than one ".Herein, it should be noted that unless otherwise specific
Regulation and restriction, term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to
It is detachably connected, or is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also lead to
It crosses intermediary to be indirectly connected, can be the connection inside two elements.It for the ordinary skill in the art, can be with
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In example 1, as shown in Figure 1-3, a kind of fuel battery double plates of tree-shaped flow field structure, comprising: anode plate
1, membrane electrode 3 and cathode plate 2；Membrane electrode 3 is located between anode plate 1 and cathode plate 2；Anode plate 1 is close to 3 side of membrane electrode
Fuel flow field face is successively arranged along fuel circulating direction: the tree-shaped flow field 7 of fuel inlet, fuel parallel flow field 8, fuel outlet tree
Shape flow field 7 '；The quantity of the fuel parallel channels 1-2 for communicating fuel in fuel parallel flow field 8 is 2a；Fuel inlet tree
Shape flow field 7 and the tree-shaped flow field 7 ' of fuel outlet are centrosymmetric and are set to the both ends of fuel parallel flow field 8；Fuel inlet tree flow
7 along fuel circulating direction with first term for 1, Geometric Sequence that common ratio is 2 is in binary tree arrangement, and two of next node
Fuel channel is symmetric with the central axis of the fuel channel of the upper node communicated therewith；Close to fuel parallel flow field
The quantity of minor details fuel channel in the minor details fuel flow field of 8 settings is 2a-1, the central axis of a minor details fuel channel be with
The line of symmetry of its two fuel parallel channels 1-2 being connected to；Wherein, a >=2.
The present embodiment realizes evenly distributing for the fuel of anode plate 1.In practical applications, a be more than or equal to 2 it is any from
So number.It is worth noting that 2aThe sectional dimension of a fuel parallel channels 1-2 is all the same, and 2a-1The section of a minor details fuel channel
Size is also all the same, i.e. the sectional dimension of all fuel channels on each node is all the same, and each node is wherein
One fuel channel is the 1/2 of the area of section of one of fuel channel of a upper node, and next node is all
The summation of the area of section of fuel channel is identical as the summation of area of section of all fuel channels of a upper node, and fuel is flat
All fuel parallel channels 1-2 (i.e. 2 in row flow field 8aA fuel parallel channels 1-2) area of section summation and each section
The summation of the area of section of all fuel channels of point is identical；The flow velocity of each fuel channel and each fuel parallel channels
The flow velocity of 1-2 is identical.
In example 2, as shown in Figs 1-4, a kind of fuel battery double plates of tree-shaped flow field structure, comprising: anode plate
1, membrane electrode 3 and cathode plate 2；Membrane electrode 3 is located between anode plate 1 and cathode plate 2；Cathode plate 2 is close to 3 side of membrane electrode
Oxidant flow field face is successively arranged along oxidant circulating direction: the tree-shaped flow field 9 of oxidant inlet, oxidant parallel flow field 10,
The tree-shaped flow field 9 ' of oxidant outlet；The oxidant parallel channels 2-2's of the oxidant that is used to circulate in oxidant parallel flow field 10
Quantity is 2b；The tree-shaped flow field 9 of oxidant inlet is centrosymmetric with the tree-shaped flow field 9 ' of oxidant outlet, and to be set to oxidant parallel
The both ends in flow field 10；The tree-shaped flow field 9 of oxidant inlet along oxidant circulating direction with first term be 1, common ratio be 2 Geometric Sequence
It is arranged in binary tree, and two oxidant channels of next node are with the oxidant channel of the upper node communicated therewith
Central axis is symmetric；Minor details oxidant channel in the minor details oxidant flow field that oxidant parallel flow field 10 is arranged
Quantity be 2b-1, the central axis of a minor details oxidant channel is pair of the two oxidant parallel channels 2-2 communicated therewith
Claim line, wherein b >=2.
The present embodiment realizes evenly distributing for the oxidant of cathode plate 2.In practical applications, b is any more than or equal to 2
Natural number.It is worth noting that 2bThe sectional dimension of a oxidant parallel channels 2-2 is all the same, and 2b-1A minor details oxidant channel
Sectional dimension it is also all the same, i.e. the sectional dimension of the oxidant channel of each node is all the same, and each node its
In oxidant channel be a upper node one of oxidant channel area of section 1/2, and next node
All oxidant channels area of section summation and a upper node all oxidant channels area of section summation
It is identical, all oxidant parallel channels 2-2 (i.e. 2 of oxidant parallel flow field 10bA oxidant parallel channels 2-2) section face
Long-pending summation is identical as the summation of area of section of all oxidant channels of each node；The stream of each oxidant channel
Speed is identical with the flow velocity of each oxidant parallel channels 2-2.
In the third embodiment, as shown in Figs. 1-5, a kind of fuel battery double plates of tree-shaped flow field structure, comprising: anode plate
1, membrane electrode 3 and cathode plate 2；Membrane electrode 3 is located between anode plate 1 and cathode plate 2；Anode plate 1 is close to 3 side of membrane electrode
Fuel flow field face is successively arranged along fuel circulating direction: the tree-shaped flow field 7 of fuel inlet, fuel parallel flow field 8, fuel outlet tree
Shape flow field 7 '；The quantity of the fuel parallel channels 1-2 for communicating fuel in fuel parallel flow field 8 is 2a；Fuel inlet tree
Shape flow field 7 and the tree-shaped flow field 7 ' of fuel outlet are centrosymmetric and are set to the both ends of fuel parallel flow field 8；Fuel inlet tree flow
7 along fuel circulating direction with first term for 1, Geometric Sequence that common ratio is 2 is in binary tree arrangement, and two of next node
Fuel channel is symmetric with the central axis of the fuel channel of the upper node communicated therewith；Close to fuel parallel flow field
The quantity of minor details fuel channel in the minor details fuel flow field of 8 settings is 2a-1, the central axis of a minor details fuel channel be with
The line of symmetry of its two fuel parallel channels 1-2 being connected to；Wherein, a >=2；Oxidant of the cathode plate 2 close to 3 side of membrane electrode
Flow field face is successively arranged along oxidant circulating direction: the tree-shaped flow field 9 of oxidant inlet, oxidant parallel flow field 10, oxidant
Export tree-shaped flow field 9 '；The quantity of oxidant parallel channels 2-2 for the oxidant that circulates in oxidant parallel flow field 10 is
2b；The tree-shaped flow field 9 of oxidant inlet and the tree-shaped flow field 9 ' of oxidant outlet are centrosymmetric and are set to oxidant parallel flow field 10
Both ends；The tree-shaped flow field 9 of oxidant inlet along oxidant circulating direction with first term be 1, common ratio be 2 Geometric Sequence be in y-bend
Tree arrangement, and two oxidant channels of next node are with the central axis of the oxidant channel of the upper node communicated therewith
Line is symmetric；The quantity of minor details oxidant channel in the minor details oxidant flow field that oxidant parallel flow field 10 is arranged
It is 2b-1, the central axis of a minor details oxidant channel is the line of symmetry of the two oxidant parallel channels 2-2 communicated therewith,
Wherein, b >=2.
Evenly distributing for the oxidant of the fuel and cathode plate 2 of the present embodiment realization anode plate 1, promotes fuel and oxidant
It is sufficiently reacted in activation of fuel cell region, improves fuel battery performance.In practical applications, a is any more than or equal to 2
Natural number.It is worth noting that 2aThe sectional dimension of a fuel parallel channels 1-2 is all the same, and 2a-1A minor details fuel channel is cut
Face size is also all the same, i.e. the sectional dimension of all fuel channels on each node is all the same, and each node its
In fuel channel be a upper node one of fuel channel area of section 1/2, and the institute of next node
Have that the summation of the area of section of fuel channel is identical as the summation of area of section of all fuel channels of a upper node, fuel
All fuel parallel channels 1-2 (i.e. 2 of parallel flow field 8aA fuel parallel channels 1-2) area of section summation and each
The summation of the area of section of all fuel channels of node is identical；The flow velocity of each fuel channel is parallel with each fuel to be led to
The flow velocity of road 1-2 is identical.Same situation is also applied for cathode plate 2, and b is any natural number more than or equal to 2.It is worth explanation
It is 2bThe sectional dimension of a oxidant parallel channels 2-2 is all the same, and 2b-1The sectional dimension of a minor details oxidant channel is also homogeneous
Together, i.e. the sectional dimension of the oxidant channel of each node is all the same, and one of oxidant channel of each node
It is the 1/2 of the area of section of one of oxidant channel of a upper node, and all oxidant channels of next node
Area of section summation it is identical as the summation of area of section of all oxidant channels of a upper node, oxidant concurrent flow
All oxidant parallel channels 2-2 (i.e. 2 of field 10bA oxidant parallel channels 2-2) area of section summation and each
The summation of the area of section of all oxidant channels of node is identical；The flow velocity of each oxidant channel and each oxidant
The flow velocity of parallel channels 2-2 is identical.
In practical applications, the value of a and b may be the same or different.And the sectional dimension and oxidant channel of fuel channel
Sectional dimension may be the same or different.The sectional dimension of fuel parallel channels 1-2 and the sectional dimension of oxidant parallel channels 2-2
It may be the same or different.It can be adaptively adjusted above according to practical situations.
In example IV, as shown in Figs. 1-5, on the basis of embodiment one, two or three, cathode plate 2 is far from membrane electrode 3
The coolant liquid flow field face of side is equipped with coolant liquid flow field.Preferably, coolant liquid flow field is successively arranged along coolant liquid circulating direction:
The tree-shaped flow field 11 of coolant inlet, coolant liquid parallel flow field 12, the tree-shaped flow field 11 ' of cooling liquid outlet；Coolant liquid parallel flow field 12
In for circulate coolant liquid coolant liquid parallel channels 2-4 quantity be 2c；The tree-shaped flow field 11 of coolant inlet and coolant liquid
It exports tree-shaped flow field 11 ' and is centrosymmetric and be set to the both ends of coolant liquid parallel flow field 12；Tree-shaped 11 edge of flow field of coolant inlet
Coolant liquid circulating direction with first term for 1, the Geometric Sequence that common ratio is 2 is in binary tree arrangement, and two of next node are cold
But liquid channel is symmetric with the central axis of the cooling passage of the upper node communicated therewith；It is parallel close to coolant liquid
The quantity for the minor details cooling passage in minor details coolant liquid flow field that flow field 12 is arranged is 2c-1, minor details cooling passage
Central axis is the line of symmetry of the two coolant liquid parallel channels 2-4 communicated therewith；Wherein, c >=1.In practical applications, c is
Any natural number more than or equal to 1.It is worth noting that 2cThe sectional dimension of a coolant liquid parallel channels 2-4 is all the same, and 2c-1
The sectional dimension of a minor details cooling passage is also all the same, i.e. the sectional dimension of the cooling passage of each node is all the same,
And each cooling passage is gradually reduced along the sectional dimension of coolant liquid circulating direction.
In embodiment five, as shown in Figs. 1-5, on the basis of embodiment one, two, three or four, fuel parallel channels 1-2
It is arranged in a one-to-one correspondence with oxidant parallel channels 2-2.Preferably, the cooling in the corresponding tree-shaped flow field 11 of coolant inlet of anode plate 1
The position of liquid entrance 6 is equipped with coolant inlet 6；The cooling liquid outlet 6 ' in the corresponding tree-shaped flow field 11 ' of cooling liquid outlet of anode plate 1
Position is equipped with cooling liquid outlet 6 '；The position of the oxidant inlet 5 in the corresponding tree-shaped flow field 9 of oxidant inlet of anode plate 1 is equipped with oxygen
Agent entrance 5；The position of the oxidant outlet 5 ' in the corresponding tree-shaped flow field 9 ' of oxidant outlet of anode plate 1 is equipped with oxidant outlet
5′；The position of the fuel inlet 4 in the corresponding tree-shaped flow field 7 of fuel inlet of cathode plate 2 is equipped with fuel inlet 4；Cathode plate 2 corresponds to fuel
The position for exporting the fuel outlet 4 ' in tree-shaped flow field 7 ' is equipped with fuel outlet 4 '.So that 6 He of coolant inlet of anode plate 1
The coolant inlet 6 of cathode plate 2 communicates；The cooling liquid outlet 6 ' of anode plate 1 and the cooling liquid outlet 6 ' of cathode plate 2 communicate；Sun
The fuel inlet 4 of pole plate 1 and the fuel inlet 4 of cathode plate 2 communicate；The fuel outlet 4 ' of anode plate 1 and the fuel of cathode plate 2 go out
Mouth 4 ' communicates；The oxidant inlet 5 of anode plate 1 and the oxidant inlet 5 of cathode plate 2 communicate；The oxidant outlet 5 ' of anode plate 1
It is communicated with the oxidant outlet 5 ' of cathode plate 2；Consequently facilitating coolant liquid, fuel and oxidant circulate in anode plate 1 and cathode plate 2
Smoothness.
Since the tree-shaped flow field 7 of fuel inlet, the tree-shaped flow field 7 ' of fuel outlet, the tree-shaped flow field 9 of oxidant inlet, oxidant go out
The tree-shaped flow field 9 ' of mouth, the tree-shaped flow field 11 of coolant inlet, the tree-shaped flow field 11 ' of cooling liquid outlet are binary tree arrangement, exemplary
, as shown in the A in Fig. 3, by taking the tree-shaped flow field 7 of fuel inlet as an example, define the fuel channel being directly connected to fuel inlet 4
For tree-shaped flow field father runner 7-1, the fuel channel being directly connected to tree-shaped flow field father runner 7-1 is tree flow ground runner 7-2,
The fuel channel being directly connected to tree flow ground runner 7-2 is tree-shaped flow field grandson runner 7-3, positioned at 2 trees of first node
The quantity of shape flow field father's runner 7-1 is the 2 (2 of the quantity of fuel inlet 4 (only 1)1) times；Positioned at next node (i.e.
Two nodes) 4 tree flow ground runner 7-2 quantity be tree-shaped flow field father runner 7-1 quantity 2 (21) times, it is located at the
The 4 (2 of two nodes2) a tree flow ground runner 7-2 quantity be fuel inlet 4 quantity 4 (22) times；Positioned at second node
Next node (i.e. third node) 8 (23) quantity of a tree-shaped flow field grandson runner 7-3 is tree flow ground runner 7-2
The 2 (2 of quantity1) times, the quantity positioned at 8 tree-shaped flow field grandson runner 7-3 of third node is the number of tree-shaped flow field father runner 7-1
The 4 (2 of amount2) times；Quantity positioned at 8 tree-shaped flow field grandson runner 7-3 of third node is the 8 (2 of the quantity of fuel inlet 43)
Times；Fourth node has 16 (24) a tree-shaped flow field great-grandson runner；And this 16 (24) a tree-shaped flow field great-grandson runner and 32 (25) a
Fuel parallel channels 1-2 connection.It is worth noting that being then located at the section when the fuel channel of each node is variable diameter passage
The line of symmetry of the fuel channel of point next node is the axis shaft close to the end of its own nearest upper fuel channel
Line is line of symmetry.Same situation is also suitable fuel parallel channels 1-2, oxidant parallel channels 2-2, coolant liquid parallel channels 2-
4, oxidant channel and cooling passage.
Preferably, fuel parallel channels 1-2, fuel channel be by the recessed formation of fuel flow field face, and be disposed adjacent
Two fuel parallel channels 1-2 or fuel channel are separated by fuel boss 1-1, so that two adjacent fuel parallel channels 1-
2 or fuel channel it is mutually indepedent.Preferably, oxidant parallel channels 2-2, oxidant channel are recessed by oxidant flow field face
It is formed, and the two oxidant parallel channels 2-2 or oxidant channel that are disposed adjacent are separated by oxidant boss 2-1, so that
Two adjacent oxidant parallel channels 2-2 or oxidant channel are mutually indepedent.Preferably, coolant liquid parallel channels 2-4, cooling
Liquid channel is by the recessed formation of coolant liquid flow field face, and the two coolant liquid parallel channels 2-4 or coolant liquid that are disposed adjacent are logical
Road is separated by coolant liquid boss 2-3, so that two adjacent coolant liquid parallel channels 2-4 or cooling passage are mutually indepedent；
Wherein oxidant flow field face and coolant liquid flow field face are oppositely arranged.
It should be noted that above-described embodiment can be freely combined as needed.The above is only of the invention preferred
Embodiment, it is noted that for those skilled in the art, in the premise for not departing from the principle of the invention
Under, several improvements and modifications can also be made, these modifications and embellishments should also be considered as the scope of protection of the present invention.
Claims (7)
1. a kind of fuel battery double plates of tree-shaped flow field structure characterized by comprising
Anode plate and cathode plate；
Fuel flow field face of the anode plate close to membrane electrode side is successively arranged along fuel circulating direction: fuel inlet is tree-shaped
Flow field, fuel parallel flow field, the tree-shaped flow field of fuel outlet；The fuel for communicating fuel in the fuel parallel flow field is parallel
The quantity in channel is 2a；The tree-shaped flow field of fuel inlet and the tree-shaped flow field of the fuel outlet be centrosymmetric be set to it is described
The both ends of fuel parallel flow field；The tree-shaped flow field of fuel inlet along fuel circulating direction with first term be 1, common ratio be 2 etc.
It is arranged than ordered series of numbers in binary tree, and two fuel channels of next node are with the fuel channel of the upper node communicated therewith
Central axis be symmetric；The minor details fuel channel in minor details fuel flow field that the close fuel parallel flow field is arranged
Quantity is 2a-1, the central axis of a minor details fuel channel is pair of the two fuel parallel channels communicated therewith
Claim line；Wherein, a >=2；And/or
Oxidant flow field face of the cathode plate close to membrane electrode side is successively arranged along oxidant circulating direction: oxidant enters
The tree-shaped flow field of mouth, oxidant parallel flow field, the tree-shaped flow field of oxidant outlet；The oxygen that circulates is used in the oxidant parallel flow field
The quantity of the oxidant parallel channels of agent is 2b；The tree-shaped flow field of oxidant inlet and the tree-shaped flow field of the oxidant outlet
It is centrosymmetric and is set to the both ends of the oxidant parallel flow field；It circulates along oxidant in the tree-shaped flow field of oxidant inlet
Direction with first term be 1, common ratio be 2 Geometric Sequence in binary tree arrangement, and two oxidant channels of next node with
The central axis of the oxidant channel of its upper node being connected to is symmetric；It is arranged close to the oxidant parallel flow field
Minor details oxidant flow field in minor details oxidant channel quantity be 2b-1, the central axis of a minor details oxidant channel
Line is the line of symmetry of the two oxidant parallel channels communicated therewith, wherein b >=2.
2. the fuel battery double plates of tree-shaped flow field structure according to claim 1, it is characterised in that: fuel parallel channels
It is correspondingly arranged with oxidant parallel channels one one or more one or more than one.
3. the fuel battery double plates of tree-shaped flow field structure according to claim 1, it is characterised in that: the cathode plate is remote
Coolant liquid flow field face from membrane electrode side is equipped with coolant liquid flow field.
4. the fuel battery double plates of tree-shaped flow field structure according to claim 3, it is characterised in that:
The coolant liquid flow field is successively arranged along coolant liquid circulating direction: the tree-shaped flow field of coolant inlet, coolant liquid parallel flow field,
The tree-shaped flow field of cooling liquid outlet；
The quantity of the coolant liquid parallel channels for the coolant liquid that circulates in the coolant liquid parallel flow field is 2c；The coolant liquid
The tree-shaped flow field of entrance and the tree-shaped flow field of the cooling liquid outlet, which are centrosymmetric, is set to the both ends of the coolant liquid parallel flow field；
The tree-shaped flow field of coolant inlet along coolant liquid circulating direction with first term be 1, common ratio be 2 Geometric Sequence be in binary tree cloth
It sets, and two cooling passages of next node are in the central axis of the cooling passage of the upper node communicated therewith
It is symmetrical；The quantity of minor details cooling passage in the minor details coolant liquid flow field of coolant liquid parallel flow field setting is
2c-1, the central axis of a minor details cooling passage is the symmetrical of the two coolant liquid parallel channels communicated therewith
Line；Wherein, c >=1.
5. the fuel battery double plates of tree-shaped flow field structure according to claim 4, it is characterised in that:
The position that the anode plate corresponds to the coolant inlet in the tree-shaped flow field of the coolant inlet is equipped with coolant inlet；
The position that the anode plate corresponds to the cooling liquid outlet in the tree-shaped flow field of the cooling liquid outlet is equipped with cooling liquid outlet.
6. the fuel battery double plates of tree-shaped flow field structure described in -5 any one according to claim 1, it is characterised in that:
The position that the anode plate corresponds to the oxidant inlet in the tree-shaped flow field of oxidant inlet is equipped with oxidant inlet；
The position that the anode plate corresponds to the oxidant outlet in the tree-shaped flow field of oxidant outlet is equipped with oxidant outlet.
7. the fuel battery double plates of tree-shaped flow field structure described in -5 any one according to claim 1, it is characterised in that:
The position that the cathode plate corresponds to the fuel inlet in the tree-shaped flow field of fuel inlet is equipped with fuel inlet；
The position that the cathode plate corresponds to the fuel outlet in the tree-shaped flow field of fuel outlet is equipped with fuel outlet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811631970.6A CN109742420A (en) | 2018-12-29 | 2018-12-29 | A kind of fuel battery double plates of tree-shaped flow field structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631970.6A CN109742420A (en) | 2018-12-29 | 2018-12-29 | A kind of fuel battery double plates of tree-shaped flow field structure |
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| CN109742420A true CN109742420A (en) | 2019-05-10 |
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| CN201811631970.6A Pending CN109742420A (en) | 2018-12-29 | 2018-12-29 | A kind of fuel battery double plates of tree-shaped flow field structure |
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| CN113571729A (en) * | 2020-04-29 | 2021-10-29 | 未势能源科技有限公司 | Bipolar plate and stack structure for fuel cell |
| CN115528263A (en) * | 2022-10-18 | 2022-12-27 | 中国科学院青岛生物能源与过程研究所 | Rectangular polar plate for high-power electrolytic cell |
| CZ309461B6 (en) * | 2020-10-16 | 2023-02-01 | Ústav Termomechaniky Av Čr, V. V. I. | Fuel cell distribution board |
| CN115832346A (en) * | 2022-12-12 | 2023-03-21 | 大连理工大学 | Fuel cell metal polar plate and manufacturing method thereof |
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Application publication date: 20190510 |