CN1571206A - A large-scale integrated fuel battery capable of being modularized assembled - Google Patents
A large-scale integrated fuel battery capable of being modularized assembled Download PDFInfo
- Publication number
- CN1571206A CN1571206A CNA031418406A CN03141840A CN1571206A CN 1571206 A CN1571206 A CN 1571206A CN A031418406 A CNA031418406 A CN A031418406A CN 03141840 A CN03141840 A CN 03141840A CN 1571206 A CN1571206 A CN 1571206A
- Authority
- CN
- China
- Prior art keywords
- fuel cell
- central
- plate
- modules
- cell stack
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention relates to a large-scale integrated fuel battery able to be assembled by modularization, composed of at least two groups of fuel battery piles and a central current collecting plate, where each fuel battery pile is singly packaged so as to compose as an independent module, which corresponds to the fastening holes on the central current collecting plate through those on the back-end plate and is fastened by bolts, and six fluid holes on the front end plate of the independent module also correspond to six branch body holes on the central current collecting plate, respectively; the similar polar plates of the modules on the left and right sides of the central current collecting plate are manufactured completely alike but manufactured with those of the adjacent modules in mirror mode. As compared with existing technique, the invention can modularize high-power, even superhigh-power integrated fuel battery, convenient to rapidly assemble and disassemble; and can make it more convenient and reasonable to implement series and parallel connection between modules, easier to meet the voltage, current and power requirement of actual application.
Description
Technical Field
The present invention relates to a fuel cell, and more particularly, to a large-scale integrated fuel cell that can be modularly assembled.
Background
An electrochemical fuel cell is a device capable of converting hydrogen and an oxidant into electrical energy and reaction products. The inner core component of the device is a Membrane Electrode (MEA), which is composed of a proton exchange Membrane and two porous conductive materials sandwiched between two surfaces of the Membrane, such as carbon paper. The membrane contains a uniform and finely dispersed catalyst, such as a platinum metal catalyst, for initiating an electrochemical reaction at the interface between the membrane and the carbon paper. The electrons generated in the electrochemical reaction process can be led out by conductive objects at two sides of the membrane electrode through an external circuit to form a current loop.
At the anode end of the membrane electrode, fuel can permeate through a porous diffusion material (carbon paper) and undergo electrochemical reaction on the surface of a catalyst to lose electrons to form positive ions, and the positive ions can pass through a proton exchange membrane through migration to reach the cathode end at the other end of the membrane electrode. At the cathode end of the membrane electrode, a gas containing an oxidant (e.g., oxygen), such as air, forms negative ions by permeating through a porous diffusion material (carbon paper) and electrochemically reacting on the surface of the catalyst to give electrons. The anions formed at the cathode end react with the positive ions transferred from the anode end to form reaction products.
In a pem fuel cell using hydrogen as the fuel and oxygen-containing air as the oxidant (or pure oxygen as the oxidant), the catalytic electrochemical reaction of the fuel hydrogen in the anode region produces hydrogen cations (or protons). The proton exchange membrane assists the migration of positive hydrogen ions from the anode region to the cathode region. In addition, the proton exchange membrane separates the hydrogen-containing fuel gas stream from the oxygen-containing gas stream so that they do not mix with each other to cause explosive reactions.
In the cathode region, oxygen gains electrons on the catalyst surface, forming negative ions, which react with the hydrogen positive ions transported from the anode region to produce water as a reaction product. In a proton exchange membrane fuel cell using hydrogen, air (oxygen), the anode reaction and the cathode reaction can be expressed by the following equations:
and (3) anode reaction:
and (3) cathode reaction:
in a typical pem fuel cell, a Membrane Electrode (MEA) is generally placed between two conductive plates, and the surface of each guide plate in contact with the MEA is die-cast, stamped, or mechanically milled to form at least one or more channels. The flow guide polar plates can be polar plates made of metal materials or polar plates made of graphite materials. The diversion pore canals and the diversion grooves on the diversion polar plates respectively lead the fuel and the oxidant into the anode area and the cathode area on two sides of the membrane electrode. In the structure of a single proton exchange membrane fuel cell, only one membrane electrode is present, and a guide plate of anode fuel and a guide plate of cathode oxidant are respectively arranged on two sides of the membrane electrode. The guide plates are used as current collector plates and mechanical supports at two sides of the membrane electrode, and the guide grooves on the guide plates are also used as channels for fuel and oxidant to enter the surfaces of the anode and the cathode and as channels for taking away water generated in the operation process of the fuel cell.
In order to increase the total power of the whole proton exchange membrane fuel cell, two or more single cells can be connected in series to form a battery pack in a straight-stacked manner or connected in a flat-laid manner to form a battery pack. In the direct-stacking and serial-type battery pack, two surfaces of one polar plate can be provided with flow guide grooves, wherein one surface can be used as an anode flow guide surface of one membrane electrode, and the other surface can be used as a cathode flow guide surface of another adjacent membrane electrode, and the polar plate is called a bipolar plate. A series of cells are connected together in a manner to form a battery pack. The battery pack is generally fastened together into one body by a front end plate, a rear end plate and a tie rod.
A typical battery pack generally includes: (1) the fuel (such as hydrogen, methanol or hydrogen-rich gas obtained by reforming methanol, natural gas and gasoline) and the oxidant (mainly oxygen or air) are uniformly distributed in the diversion trenches of the anode surface and the cathode surface; (2) the inlet and outlet of cooling fluid (such as water) and the flow guide channel uniformly distribute the cooling fluid into the cooling channels in each battery pack, and the heat generated by the electrochemical exothermic reaction of hydrogen and oxygen in the fuel cell is absorbed and taken out of the battery pack for heat dissipation; (3) the outlets of the fuel gas and the oxidant gas and the corresponding flow guide channels can carry out liquid and vapor water generated in the fuel cell when the fuel gas and the oxidant gas are discharged. Typically, all fuel, oxidant, and cooling fluid inlets and outlets are provided in one or both end plates of the fuel cell stack.
The proton exchange membrane fuel cell can be used as a power system of vehicles such as vehicles and ships, and can also be used as a mobile or fixed power station.
The fuel cell power generation system mainly comprises a fuel cell stack and a stack support operation system. The fuel cell power generation system for vehicle, ship power or high power of a power station is required to output tens of kilowatts, even hundreds of kilowatts. For such high power output requirements, a fuel cell stack and supporting operation system with corresponding high power output are necessary.
The engineering design and manufacture of the fuel cell stack with high power output are analyzed from the aspects of technology and manufacturing cost, and a huge high-power single stack method consisting of a plurality of polar plates with large active area cannot be adopted generally, but a method for achieving the high-power output requirement by integrating a plurality of medium and small power fuel cell stack modules together is adopted.
The inlets and outlets of all oxidant (air), fuel (hydrogen) and cooling fluid (water) on several (more than 2) fuel cell stacks are uniformly integrated and connected into six channels. The oxidant (air), fuel (hydrogen) and cooling fluid (water) in the six channels are uniformly distributed to each fuel cell stack, and the oxidant (air), fuel (hydrogen) and cooling fluid (water) in each fuel cell stack are discharged and uniformly converged on the oxidant (air), fuel (hydrogen) and cooling fluid (water) in the six channels, so that the operating conditions of a plurality of fuel cell stacks are uniform. This integration technique of several fuel cell stacks is generally achieved by the following method: several fuel cell stacks are arranged into a fuel cell stack array, and six fluid pipelines are respectively arranged beside the array, such as: the large pipeline for oxidant (air) is branched into several uniform thin branch pipes, each thin branch pipe is connected with oxidant (air) in each fuel cell stack, and the other five large pipelines are also branched into several uniform thin branch pipes, and connected with correspondent identical fluid in each fuel cell stack.
Currently, the widely-implemented fuel cell flow guide channel integrated panel design and multiple fuel cell stack integration technology have the following defects:
the six diversion channels are directly converged on the same panel at the front end of the fuel cell stack, so that the diversion channels in the fuel cell stack are correspondingly long, fluid resistance is easy to generate, larger pressure loss is caused, and further, the fluid is unevenly distributed in each single cell in the fuel cell stack, and the performance difference of each single cell is caused.
The six channels in the fuel cell stack are collected on two panels at the front and rear ends of the fuel cell stack, for example: the design makes the inlet and outlet of the flow guide channel at the front and back ends respectively to force the pipelines not to be concentrated together but to be dispersed at the two ends, when the fuel cell is used as a vehicle-mounted or ship-mounted power system, the pipelines are dispersed to be not beneficial to the arrangement of the cell.
The method for connecting the inlet and outlet of all air, hydrogen and cooling water on a plurality of fuel cell stacks into six fluid channels by unified integration and branching a plurality of uniform thin branch pipes to be connected with the inlet and outlet of fluid in each fuel cell stack has the technical defects that the leakage is easy to generate due to too many pipelines and the congestion problem is very prominent, so that the design and installation are very difficult.
Patent of shanghai Shenli company- "an integrated fuel cell" [ application number of the invention patent application: 02136045.6, respectively; the patent number of the utility model patent: 02265512.3]to overcome the above-mentioned drawbacks of the prior art and to provide an integrated fuel cell having a compact structure, low resistance and pressure loss, and easy installation. Such an integrated fuel cell is characterized in that: the fuel cell stack comprises at least two groups of fuel cell stacks and a collector plate, wherein a total hydrogen inlet channel, a total cooling water inlet channel and a total air inlet channel are arranged in the collector plate; a main air outlet channel, a main cooling water outlet channel and a main hydrogen outlet channel; the main channels are respectively provided with at least one branch hydrogen inlet channel, a branch cooling water channel and a branch air channel which are vertically communicated with the main channels; an air outlet channel, a cooling water outlet channel and a hydrogen outlet channel; the branch passages are connected to respective inlet and outlet fluid passages of each fuel cell. The fluid channels of the collecting plate are in different areas or different layers in the same plate andare not in series flow with each other; the fuel cell stack comprises at least one group of monocells, a positive and negative current collecting mother board and two bottom end boards; the current collecting plate is fixedly matched with the bottom end plate of each cell stack to form an integrated fuel cell.
The current collecting plate is a cuboid plate, the inlet and the outlet of each fluid main channel are respectively arranged on the front surface and the back surface, and the inlet and the outlet of each fluid branch channel are arranged on the side surface connected with the corresponding cell stack.
The current collecting plate is a cuboid plate, the inlet and outlet of each fluid main channel are arranged on the front surface, and the inlet and outlet of each fluid branch channel are arranged on the side surface connected with the corresponding cell stack.
The fuel cell stack is divided into two groups, each fluid main channel of the collector plate is internally provided with a branch channel which is vertically communicated with the fluid main channel, and the branch channels are connected with the corresponding inlet and outlet fluid channels of each fuel cell; the two groups of cells are stacked on two side surfaces of the current collecting plate and clamped and share the current collecting plate, so that the two-in-one integrated fuel cell is formed.
The fuel cell stack is divided into four groups, each fluid main channel of the collector plate is internally provided with two branch channels which are vertically communicated with the fluid main channel, and the branch channels are connected with the corresponding fluid inlet and outlet channels of each fuel cell; the four groups of cells are stacked on two side surfaces of the current collecting plate, clamped in pairs and share the current collecting plate, so that the four-in-one integrated fuel cell is formed.
The guide current led out by the flow collecting mother board of each fuel cell stack can be output after being connected in series or in parallel.
The single cell comprises a flow guide polar plate and a proton exchange membrane electrode, and two flow guide polar plates are respectively clamped at two sides of the proton exchange membrane electrode to form the single cell.
Compared with other technologies, the integrated fuel cell has the following advantages:
1. the flow guide channels are concentrated on one collector plate in the middle of the fuel cell stack, so that the whole fuel cell can be more compact, and the volume is reduced.
2. Six total fluid channels are arranged on a collector plate in the middle of the fuel cell stack and are connected with the fluid channels of each fuel cell stack through branch fluid channels, so that the whole fuel cell stack can be arranged in a plurality of groups, and because the collector plate is arranged in the middle of the fuel cell stack, each fluid channel is half the length of the whole fuel cell stack, the problems of resistance, pressure loss and the like caused by overlong fluid channels are avoided, and the fluid is distributed in each single cell in the fuel cell stack more uniformly.
3. The fuel cell stack can perform various fluid distribution from the middle, and the integration is more convenient and easy, and the assembly is simple. The whole integrated fuel cell array is more compact in volume.
4. The flow distance of the fluid is shortened, the circulation is accelerated, the electrochemical reaction is more uniform, the heat dissipation is facilitated, and the reaction efficiency is improved.
5. The maintenance is convenient, and if one cell stack has a fault, the cell stack is only required to be disassembled for maintenance.
Disclosure of Invention
The invention aims to make extension and improvement of further technical invention on the basis of the technical invention of the integrated fuel cell, so that the integrated fuel cell with high power and even ultra-high power can realize modularization, simplicity, convenience, quick assembly, disassembly and maintenance; and the serial and parallel connection between each modularized fuel cell stack is more convenient and reasonable, and the voltage, current and power requirements of practical application can be more easily met.
The purpose of the invention can be realized by the following technical scheme:
a can large-scale integrated fuel cell that the modularization assembles, it is made up of at least two groups of fuel cell stacks and a central collecting flow board, there are total hydrogen inlet channels, total cooling water inlet channels, total air outlet channels, total cooling water outlet channels, total hydrogen outlet channels in the said central collecting flow board, there is at least one branch that communicates with it vertically that enters hydrogen channel, branch and enters the cooling water channel, branch and enters the air channel, pays the cooling water channel, pays the hydrogen channel, these branch channels are connected with the corresponding fluid channel of entering and leaving of each fuel cell stack separately; the fluid channels of the central collecting plate are in different areas or different layers in the same plate and are not in series flow with each other; the fuel cell stack comprises at least one group of monocells, a positive and negative current collecting mother board, a front end plate and a rear end plate; the central total current collecting plate is fixedly matched with the end plate of each fuel cell stack to form an integrated fuel cell; the fuel cell stack is characterized in that each fuel cell stack is packaged independently to form an independent module, the independent module corresponds to the fastening hole on the central main collecting plate through the fastening hole on the rear end plate of the independent module and is fastened through a screw, and six fluid hole openings of the front end plate of the independent module also correspond to six branch fluid hole openings on the central main collecting plate.
The independent module is packaged by a packaging belt method, the front end plate and the rear end plate of the independent module are made of insulating materials, and the surfaces of the front end plate and the rear end plate, which are contacted with the packaging belt, are milled into wide belt shapes with a certain depth through mechanical processing, so that the packaging belt is just fixed in the wide belt range and is completely contacted with the surface of the fuel cell stack.
The packaging belt is a stainless steel belt, and an insulating material is filled on the contact surface of the stainless steel belt and the fuel cell stack, wherein the insulating material comprises engineering plastics, epoxy plates, bakelite plate materials or plastic films.
The independent module is packaged by a sleeve frame method, a sleeve frame made of plastic materials or stainless steel materials is firstly processed, six fluid channel holes are formed in the front end plate of the sleeve frame and can be directly connected with a central current collecting plate, a sleeve frame flanging is arranged at the rear end of the sleeve frame, a plurality of fastening holes are formed in the peripheral edge of the flanging, an upper cover end plate is arranged on the flanging, a plurality of fastening holes are formed in the peripheral edge ofthe end plate and correspond to the fastening holes in the peripheral edge of the flanging one by one, and the whole battery stack can be fastened into an independent battery stack module through bolt fastening.
Four groups of independent modules can be integrated on the central collecting plate, and the left side and the right side are respectively provided with two groups, and the total number is four.
Six groups of independent modules can be integrated on the central total flow collecting plate, and the left side and the right side are respectively provided with three groups, namely six groups.
Eight groups of independent modules can be integrated on the central collecting plate, and the left side and the right side of the central collecting plate are respectively provided with four groups, so that eight groups are formed; and so on, even more groups can be integrated.
The central main flow collecting plate can be a cuboid or a cube, the inlet and the outlet of each fluid main channel are respectively arranged on the front surface and the back surface or are arranged on the front surface, and the inlet and the outlet of each fluid branch channel are arranged on the side surface connected with the corresponding independent module.
In the processing of the modularized fuel cell stack, the fuel cells in the same two modules in the same group on the left side and the right side of the central total current collecting plate are processed completely in the same way, so that the positive and negative electrode orientations of each single cell are completely consistent, and the two modules can be directly connected in series; the same type pole plates of the fuel cells in the two modules of the other adjacent group are processed completely the same, but the same type pole plates of the fuel cells in the adjacent group are processed in a mirror image mode, so that the orientation and the arrangement of the positive and negative poles of each single cell in the group are completely consistent, but are just opposite to the orientation of the positive and negative poles of the adjacent group.
The front end and the rear end of the independent module are respectively provided with a current collecting mother board for the positive pole and the negative pole of the led-out current, and the current led out by the current collecting mother board can be output after being randomly connected in series and in parallel.
The inlets of all the fluid main channels of the central main flow collecting plate are arranged on the front surface and respectively comprise: a total fuel hydrogen channel inlet, a total oxidant air channel inlet, a total cooling fluid channel inlet; the outlets of all the fluid main channels are arranged on the back surface and respectively comprise: a total fuel hydrogen channel outlet, a total oxidant air channel outlet, a total cooling fluid channel outlet; the left side surface and the right side surface of the central total current collecting plate are respectively provided with a plurality of six branch fluid channel ports corresponding to each cell stack module, the six branch fluid channel ports are not mutually connected in series, and each branch fuel hydrogen inlet channel port in all the cell stack modules is connected with a total fuel hydrogen inlet channel on the central total current collecting plate; each of the branch air inlet channels of all of the stack modules is connected to the main air inlet channel, and each of the branch cooling fluid inlet channels of all of the stack modules is connected to the main cooling fluid inlet channel; each branch fuel hydrogen outlet channel port in all other stack modules is connected with the total fuel hydrogen outlet channel on the central total flow collecting plate, each branch air outlet channel portin all stack modules is connected with the total air outlet channel, and each branch cooling fluid outlet channel port in all stack modules is connected with the total cooling fluid outlet channel.
Therefore, the integration of a plurality of independently packaged cell stack modules can be realized on the same central total current collecting plate, each cell stack module is independently connected with the central total current collecting plate through a fastening screw rod, if the cell stack modules are required to be disassembled, each cell stack module can be independently disassembled without influencing other modules, three total fluid inlet channels (respectively hydrogen, air and cooling fluid) are arranged in front of the central total current collecting plate, and three total fluid outlet channels (respectively hydrogen, air and cooling fluid) are arranged on the back of the central total current collecting plate, the pipeline connection is simple and convenient, the size is small, and the safety problems of disorder, leakage and the like are not easy to cause.
The front end and the rear end of each fuel cell module which is packaged independently are respectively provided with a current motherboard which is used as a positive electrode and a negative electrode for leading out current. In order to make the connection of the positive and negative poles between each cell stack module in the whole multi-module integrated fuel cell more reasonable in space and distance, the invention also has the following characteristics in the technology:
1. the first pair of left and right corresponding two groups of battery pile modules on the central current collecting plate adopt the same polar plates, the polar plates have the same flow guide function and flow guide field design and processing, and the function design and processing of the cooling fluid flow guide field in the bipolar plate, and all the bipolar plates in the two groups of battery pile modules corresponding to the left side and the right side are the same in the arrangement orientation, so that the positive and negative arrangement orientations of the two groups of battery pile modules can be ensured to be the same, the current collecting mother plates on the two groups of battery pile modules can easily realize the serial connection of the positive and negative poles, and the connection distance in space is very close and reasonable. Referring to fig. 7, in fig. 7, 7a is a first pair of two corresponding stack modules, 7b, a second pair of two corresponding stack modules, 12 is a central current collecting plate, and 18, 19 are positive and negative current collecting plates in the stack modules, which are connected in series.
2. The same polar plates are also adopted in the two groups of cell stack modules corresponding to the second pair (adjacent to the first pair) on the central total flow collecting plate, the polar plates are designed and processed in the flow guide function and the flow guide field of the bipolar plate, the flow guide field of cooling fluid in the bipolar plate and other functional designs and processes are the same, but the flow guide plates of the two cell stack modules are completely mirror-symmetrical to the polar plates adopted in the first pair in terms of physical shape from mechanical processing. Thus, all bipolar plates in the second pair of two corresponding stack modules have the same positive and negative orientations, but are exactly opposite to the positive and negative orientations of all plates in the first pair of two corresponding stack modules. Therefore, the current collecting mother boards on the second pair of corresponding battery stack modules can easily realize the serial connection of the positive electrode and the negative electrode, and the connection distance is very close and reasonable in space. As shown in fig. 8, 7a is a first pair of corresponding two-cell stack modules, 7b is a second pair of corresponding two-cell stack modules, 7c and 7d are a third pair and a fourth pair of corresponding two-cell stack modules, and 20, 21, 22, 23, 24, 25, 26 and 27 are current collecting motherboards on each cell stack module, which serve as positive and negative poles. Therefore, this plate design and arrangement allows for the series connection of the second pair of stack modules 7b (current collectors 25 directly connect the positive and negative poles of 26, closely spaced, rational), and the series connection of the second pair of stack modules 7b with the first pair of stack modules 7a (current collectors 24 directly connect 20, closely spaced, rational).
Drawings
FIG. 1 is a schematic diagram of the structure of an individual module packaged by the tape-in-package method of the present invention;
FIG. 2 is a schematic view of the front and rear end plates of the individual module of FIG. 1;
FIG. 3 is a schematic structural diagram of a first independent module packaged by a frame-in-frame method according to the present invention;
FIG. 4 is a schematic structural diagram of a second independent module packaged by a frame-in-frame method according to the present invention;
FIG. 5 is a schematic view of the connection of the independent modules to the central manifold according to the present invention;
FIG. 6 is a schematic view showing the structure of a central bus plate according to the present invention;
FIG. 7 is a schematic structural diagram of a plate assembly of the present invention;
FIG. 8 is a schematic structural diagram of another plate assembly of the present invention;
FIG. 9 is a schematic structural diagram of an embodiment of the present invention;
fig. 10 is a schematic diagram of the structure of the present invention.
Detailed Description
A can large-scale integrated fuel cell that the modularization assembles, it is made up of at least two groups of fuel cell stacks and a central collecting flow board, there are total hydrogen inlet channels, total cooling water inlet channels, total air outlet channels, total cooling water outlet channels, total hydrogen outlet channels in the said central collecting flow board, there is at least one branch that communicates with it vertically that enters hydrogen channel, branch and enters the cooling water channel, branch and enters the air channel, pays the cooling water channel, pays the hydrogen channel, these branch channels are connected with the corresponding fluid channel of entering and leaving of each fuel cell stack separately; the fluid channels of the central collecting plate are in different areas or different layers in the same plate and are not in series flow with each other; the fuel cell stack comprises at least one group of monocells, a positive and negative current collecting mother board, a front end plate and a rear end plate; the central total current collecting plate is fixedly matched with the end plate of each fuel cell stack to form an integrated fuel cell; the fuel cell stack is characterized in that each fuel cell stack is packaged independently to form an independent module, the independent module corresponds to the fastening hole on the central main collecting plate through the fastening hole on the rear end plate of the independent module and is fastened through a screw, and six fluid hole openings of the front end plate of the independent module also correspond to six branch fluid hole openings on the central main collecting plate.
The independent module can be packaged by a packaging belt method, as shown in fig. 1 and fig. 2, the independent module comprises a front end plate 1, a rear end plate 2, a packaging belt 3, a screw cap 4, a screw rod 5 and a fuel cell stack 7, wherein the front end plate and the rear end plate are made of insulating materials, the surfaces of the front end plate and the rear end plate, which are contacted with the packaging belt, are machined to form a wide belt shape with a certain depth, so that the packaging belt is just fixed in the wide belt range, and the packaging belt is completely contacted with the surface of the fuel cell stack.
The independent module can be packaged by a frame-in-frame method, as shown in fig. 3 and 4, the independent module comprises a fuel cell stack 7, a connecting screw 8, a jacking screw 9, a frame-in cover 10 and a frame-in cover 11, wherein a frame made of plastic material or stainless steel material is firstly processed, six fluid channel holes are formed in a front end plate of the frame-in-frame and can be directly connected with a central main current collecting plate, a frame-in-frame flanging is arranged at the upper end of the frame-in-frame flanging, a plurality of fastening holes are formed in the peripheral edge of the flanging, an upper cover end plate is arranged on the flanging, a plurality of fastening holes are formed in the peripheral edge of the end plate and correspond to the fastening holes in the peripheral edge of the flanging one-to-one, and the.
Four groups, six groups, eight groups or even more groups of independent modules can be integrated on the central current collecting plate and are respectively arranged at the left side and the right side of the central current collecting plate.
As shownin fig. 5, it is a schematic structural diagram of the connection between the central current collecting plate 12 and the independent module, and the diagram includes an air through hole 13, a cooling water through hole 14, a hydrogen through hole 15, a connecting screw hole 16, and a current collecting mother plate 17.
As shown in fig. 6, the central manifold 12 may be a rectangular parallelepiped or a square, with the inlets and outlets of the fluid main channels on the front side, the back side, or both the front side, and the inlets and outlets of the fluid branch channels on the side connected to the corresponding independent modules.
The front end and the rear end of the independent module are respectively provided with a current collecting mother board for the positive pole and the negative pole of the led-out current, and the current led out by the current collecting mother board can be output after being randomly connected in series and in parallel.
As shown in fig. 9, in an embodiment of the present invention, there are 8 cell stack modules, each of which is individually packaged and then fixed on the central current collecting plate, and in an example where 8 cell stack modules are all connected in series, the spatial connection can be achieved to be close and reasonable, and in fig. 9, 7a, 7b, 7c, and 7d are four groups of cell stack modules corresponding to a first pair, a second pair, a third pair, and a fourth pair, respectively; the same polar plates in the four battery stack modules of the 7a and 7c groups are processed completely the same, the positive and negative polarities of the single batteries in the four battery stack modules are completely the same, the same polar plates in the four battery stack modules of the 7b and 7d groups are processed completely the same, but the same polar plates are processed in a mirror image manner with the same polar plates in the four battery stack modules of the 7a and 7c groups, the positive and negative polarities of the single batteries in the four battery stack modules of the 7b and 7d groups are completely the same, but the positive and negative polarities of the single batteries in the four battery stack modules of the 7a and 7c groups are just opposite; the central collecting flow plates 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35 are current collecting motherboards on each cell stack module, and serve as positive and negative electrodes, wherein the central collecting flow plates 21, 22 are directly connected in series, 20, 24 are directly connected in series, 25, 26 are directly connected in series, 27, 31 are directly connected in series, 29, 30 are directly connected in series, 28, 32 are directly connected in series, 33, 34 are directly connected in series, and finally the current collecting motherboards 23, 35 can serve as positive and negative electrode outward output ends of the whole integrated fuel cell.
Referring to fig. 10, which is a specific structural diagram of the present invention, the air flow channels of the group 7a (7c, not shown) and the air flow channels of the adjacent group 7b (7d, not shown) H are mirror-processed, and the hydrogen flow channels of the group 7a (7c, not shown) and the hydrogen flow channels of the adjacent group 7b (7d, not shown) L are mirror-processed; and 12 is a central collecting plate.
Claims (10)
1. A can large-scale integrated fuel cell that the modularization assembles, it is made up of at least two groups of fuel cell stacks and a central collecting flow board, there are total hydrogen inlet channels, total cooling water inlet channels, total air outlet channels, total cooling water outlet channels, total hydrogen outlet channels in the said central collecting flow board, there is at least one branch that communicates with it vertically that enters hydrogen channel, branch and enters the cooling water channel, branch and enters the air channel, pays the cooling water channel, pays the hydrogen channel, these branch channels are connected with the corresponding fluid channel of entering and leaving of each fuel cell stack separately; the fluid channels of the central collecting plate are in different areas or different layers in the same plate and are not in series flow with each other; the fuel cell stack comprises at least one group of monocells, a positive and negative current collecting mother board, a front end plate and a rear end plate; the central total current collecting plate is fixedly matched with the end plate of each fuel cell stack to form an integrated fuel cell; the fuel cell stack is characterized in that each fuel cell stack is packaged independently to form an independent module, the independent module corresponds to the fastening hole on the central main collecting plate through the fastening hole on the rear end plate of the independent module and is fastened through a screw, and six fluid hole openings of the front end plate of the independent module also correspond to six branch fluid hole openings on the central main collecting plate.
2. The modularly assemblable large scale integrated fuel cell of claim 1 wherein said individual modules are packaged in a packaging tape method, wherein the front and back end plates are made of insulating material, and the surfaces of said front and back end plates that contact the packaging tape are machined to a depth that provides a wide tape shape that fits snugly within the wide tape and provides full contact between the packaging tape and the surface of the fuel cell stack.
3. The large-scale integrated fuel cell capable of being modularly assembled as claimed in claim 2, wherein said packaging tape is astainless steel tape, and an insulating material is filled on the contact surface of the stainless steel tape and the fuel cell stack, and the insulating material comprises engineering plastics, epoxy board, bakelite board material or plastic film.
4. The large-scale integrated fuel cell of claim 1, wherein the independent modules are packaged in a frame-in-frame manner by first processing a frame made of plastic or stainless steel, the front end plate of the frame has six fluid passage holes for directly connecting to the central manifold, the rear end of the frame has a frame flange, the flange has a plurality of fastening holes around its periphery, the flange has an upper cover end plate, the end plate has a plurality of fastening holes around its periphery corresponding to the fastening holes around its periphery, and the fastening holes are fastened by bolts to form an independent stack module.
5. The modularly assemblable large scale integrated fuel cell of claim 1 wherein said central manifold has four sets of independent modules, two sets on each of left and right sides, for four sets.
6. The modularly assemblable large scale integrated fuel cell of claim 1 wherein said central manifold has six groups of independent modules, three on each of the left and right sides, for a total of six groups.
7. The modularly assemblable large scale integrated fuel cell of claim 1 wherein said central manifold has eight groups of independent modules, four groups on each of the left and right sides, eight groups; and so on, even more groups can be integrated.
8. The modularly assemblable large scale integrated fuel cell as set forth in claim 1, wherein said central manifold is rectangular parallelepiped or square in shape, and each of said fluid main channel inlets and outlets is provided on the front surface, the rear surface or both of the front surfaces, and each of said fluid branch channel inlets and outlets is provided on the side surface connected to the corresponding independent module.
9. The large-scale integrated fuel cell capable of being modularly assembled according to claim 1, wherein the modularized fuel cell stack is processed such that the same type of plates of the fuel cells in the same two modules in the same group on the left and right sides of the central current collecting plate are processed completely the same, and the positive and negative electrode orientations of the single cells are completely the same, so that the two modules can be directly connected in series; the same type pole plates of the fuel cells in the two modules of the other adjacent group are processed completely the same, but the same type pole plates of the fuel cells in the adjacent group are processed in a mirror image mode, so that the orientation and the arrangement of the positive and negative poles of each single cell in the group are completely consistent, but are just opposite to the orientation of the positive and negative poles of the adjacent group.
10. The large-scale integrated fuel cell capable of being modularly assembled according to claim 1, wherein the front end and the rear end of the independent module are respectively provided with a current collecting mother plate for positive and negative electrodes for leading out current, and the current led out by the current collecting mother plate can be output after being connected in series or in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031418406A CN100444452C (en) | 2003-07-25 | 2003-07-25 | A large-scale integrated fuel battery capable of being modularized assembled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031418406A CN100444452C (en) | 2003-07-25 | 2003-07-25 | A large-scale integrated fuel battery capable of being modularized assembled |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1571206A true CN1571206A (en) | 2005-01-26 |
| CN100444452C CN100444452C (en) | 2008-12-17 |
Family
ID=34471072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031418406A Expired - Lifetime CN100444452C (en) | 2003-07-25 | 2003-07-25 | A large-scale integrated fuel battery capable of being modularized assembled |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100444452C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100414762C (en) * | 2005-05-26 | 2008-08-27 | 上海神力科技有限公司 | Single module type fuel cell |
| CN104716376A (en) * | 2015-04-02 | 2015-06-17 | 浙江高成绿能科技有限公司 | Fuel cell stack structure |
| CN106374128A (en) * | 2016-11-07 | 2017-02-01 | 新源动力股份有限公司 | Modular fuel cell system |
| CN108183246A (en) * | 2017-12-20 | 2018-06-19 | 新源动力股份有限公司 | A kind of combined fuel cell module of double heaps |
| CN109065934A (en) * | 2018-09-07 | 2018-12-21 | 骆驼集团武汉光谷研发中心有限公司 | A kind of high power fuel cell pile |
| CN110233278A (en) * | 2019-07-17 | 2019-09-13 | 新源动力股份有限公司 | A kind of galvanic pile module of fuel cell fluid-dispensing structure |
| WO2021109278A1 (en) * | 2019-12-04 | 2021-06-10 | 浙江中合天空科技股份有限公司 | Large proton exchange membrane fuel cell power station process system |
| CN113022332A (en) * | 2021-03-26 | 2021-06-25 | 大连擎研科技有限公司 | System for high-power dual-fuel cell electric pile vehicle and using method thereof |
| CN115050980A (en) * | 2021-03-08 | 2022-09-13 | 上海轩玳科技有限公司 | Proton exchange membrane fuel cell structure |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5789091C1 (en) * | 1996-11-19 | 2001-02-27 | Ballard Power Systems | Electrochemical fuel cell stack with compression bands |
| JPH10214634A (en) * | 1997-01-30 | 1998-08-11 | Japan Storage Battery Co Ltd | Fuel cell |
| JP3516892B2 (en) * | 1999-11-09 | 2004-04-05 | 松下電器産業株式会社 | Polymer electrolyte fuel cell stack |
| JP3952744B2 (en) * | 2001-11-12 | 2007-08-01 | 日産自動車株式会社 | Fuel cell |
| CN2554809Y (en) * | 2002-07-15 | 2003-06-04 | 上海神力科技有限公司 | Integral fuel cell |
| CN2632867Y (en) * | 2003-07-25 | 2004-08-11 | 上海神力科技有限公司 | Large-scale integral fuel battery with modular assembly |
-
2003
- 2003-07-25 CN CNB031418406A patent/CN100444452C/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100414762C (en) * | 2005-05-26 | 2008-08-27 | 上海神力科技有限公司 | Single module type fuel cell |
| CN104716376A (en) * | 2015-04-02 | 2015-06-17 | 浙江高成绿能科技有限公司 | Fuel cell stack structure |
| CN106374128A (en) * | 2016-11-07 | 2017-02-01 | 新源动力股份有限公司 | Modular fuel cell system |
| CN106374128B (en) * | 2016-11-07 | 2023-07-28 | 新源动力股份有限公司 | Modular fuel cell system |
| CN108183246A (en) * | 2017-12-20 | 2018-06-19 | 新源动力股份有限公司 | A kind of combined fuel cell module of double heaps |
| CN109065934A (en) * | 2018-09-07 | 2018-12-21 | 骆驼集团武汉光谷研发中心有限公司 | A kind of high power fuel cell pile |
| CN109065934B (en) * | 2018-09-07 | 2024-04-23 | 骆驼集团武汉光谷研发中心有限公司 | High-power fuel cell stack |
| CN110233278A (en) * | 2019-07-17 | 2019-09-13 | 新源动力股份有限公司 | A kind of galvanic pile module of fuel cell fluid-dispensing structure |
| WO2021109278A1 (en) * | 2019-12-04 | 2021-06-10 | 浙江中合天空科技股份有限公司 | Large proton exchange membrane fuel cell power station process system |
| CN115050980A (en) * | 2021-03-08 | 2022-09-13 | 上海轩玳科技有限公司 | Proton exchange membrane fuel cell structure |
| CN113022332A (en) * | 2021-03-26 | 2021-06-25 | 大连擎研科技有限公司 | System for high-power dual-fuel cell electric pile vehicle and using method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100444452C (en) | 2008-12-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1641918A (en) | Integrated fuel cell pile packaging and fastening device | |
| CN1571206A (en) | A large-scale integrated fuel battery capable of being modularized assembled | |
| CN2632867Y (en) | Large-scale integral fuel battery with modular assembly | |
| CN1469502A (en) | Integrated fuel cell | |
| CN1194436C (en) | Improved fuel cell | |
| CN1815789A (en) | Flow-collection mother-board and end-plate composite structure for fuel cells | |
| CN2554809Y (en) | Integral fuel cell | |
| CN1866592A (en) | Combined type flow guide polar plate suitable for normal pressure or low pressure fuel cell | |
| CN1320679C (en) | Inner wetting proton exchanging film fuel battery | |
| CN1770527A (en) | Integrated fuel cell for optimization design for hydrogen gas access channels and circulating uses | |
| CN2802738Y (en) | Individual module type fuel battery pile | |
| CN200950456Y (en) | Package structure of integrated fuel cell | |
| CN2763992Y (en) | Flow concentration motherboard and end board combined structure for fuel cell | |
| CN1381917A (en) | Fuel battery with higher output power | |
| CN2763993Y (en) | Flow guiding double-pole board or membrane electrod seal structure for fuel cell | |
| CN2674658Y (en) | Dual-fuel cell power system capable of parallelly operating | |
| CN1508898A (en) | Guide polar plate capable of increnasing operation stability of fuel cell | |
| CN1635657A (en) | A double fuel cell power system capable of parallel working | |
| CN2676423Y (en) | A packaging and fixing apparatus for integrated fuel cell pile | |
| CN2672882Y (en) | Stacking fuel cell on guide flow polar plate operated at low voltage or constant voltage | |
| CN1303716C (en) | Fuel cell with high output voltage | |
| CN2775853Y (en) | Integrated fuel cell for hydrogen entrance and exit passway and circulation use for optimizing design | |
| CN2796122Y (en) | Integrated fuel cell capable of resonably arranging positive and negtive pole leads | |
| CN1870340A (en) | Single module type fuel cell | |
| CN1571201A (en) | An improved fuel battery pile assembly and method for making same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI SHEN-LI HIGH TECH. CO., LTD. STATE GRID C Effective date: 20121214 Owner name: SHANGHAI MUNICIPAL ELECTRIC POWER COMPANY Free format text: FORMER OWNER: SHANGHAI SHEN-LI HIGH TECH. CO., LTD. Effective date: 20121214 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201400 FENGXIAN, SHANGHAI TO: 200122 PUDONG NEW AREA, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20121214 Address after: 200122 Shanghai City, Pudong New Area source deep road, No. 1122 Patentee after: SHANGHAI MUNICIPAL ELECTRIC POWER Co. Patentee after: Shanghai Shenli Technology Co.,Ltd. Patentee after: State Grid Corporation of China Address before: 201400, 10, Pu Pu Industrial Zone, Shanghai, No. 111, Pu Pu Avenue Patentee before: Shanghai Shenli Technology Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081217 |