WO2021136320A1 - 一种固体氧化物燃料电池堆 - Google Patents

一种固体氧化物燃料电池堆 Download PDF

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Publication number
WO2021136320A1
WO2021136320A1 PCT/CN2020/141137 CN2020141137W WO2021136320A1 WO 2021136320 A1 WO2021136320 A1 WO 2021136320A1 CN 2020141137 W CN2020141137 W CN 2020141137W WO 2021136320 A1 WO2021136320 A1 WO 2021136320A1
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WIPO (PCT)
Prior art keywords
sealing
cover plate
solid oxide
oxide fuel
cell stack
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PCT/CN2020/141137
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English (en)
French (fr)
Inventor
王蔚国
何长荣
陈涛
彭军
翟惠娟
谢光华
陈治根
覃朝晖
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宁波索福人能源技术有限公司
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Publication of WO2021136320A1 publication Critical patent/WO2021136320A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
    • H01M8/026—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant characterised by grooves, e.g. their pitch or depth
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
    • H01M8/0265—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant the reactant or coolant channels having varying cross sections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2465—Details of groupings of fuel cells
    • H01M8/2484—Details of groupings of fuel cells characterised by external manifolds
    • 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

Definitions

  • the utility model relates to the technical field of solid oxide fuel cells, in particular to a solid oxide fuel cell stack.
  • the solid oxide fuel cell (Solid Oxide Fuel Cell, SOFC) power generation system is an efficient energy conversion device that can directly convert the chemical energy in natural gas, hydrogen, synthesis gas and other fuels into electrical energy.
  • the new-type energy conversion device of the integrated power generation system has a good commercial application prospect.
  • the battery stack is the core component of the SOFC power generation system, which is composed of multiple cells and corresponding accessories.
  • the electrochemical conversion is completed in the battery stack.
  • the design of the battery stack array is one of the keys to the design of the SOFC power generation system.
  • the existing Chinese patent "A flat-plate type solid oxide fuel cell stack" with the patent number 201820917507.7 includes at least one battery unit, and each battery unit includes at least one single cell, an upper connector, an anode current collector, Cathode collector net and lower connector, two adjacent battery cells are stacked up and down and share the same connector; the sealing cover plate and the sealing support plate are sealed and fixed, the upper connector, the sealing cover plate, the sealing support plate, and the lower connection
  • the parts are equipped with anode air inlet and anode air outlet.
  • the battery stack with this structure solves the problem of string leakage of the battery stack, and greatly enhances the stability and life of the battery stack.
  • the manufacturing process is not standardized and modular enough, and the quality is not well controlled. Therefore, further improvements are needed in the structure.
  • the technical problem to be solved by the utility model is to provide a solid oxide fuel cell stack with simple structure and good stability in view of the above-mentioned technical status.
  • a solid oxide fuel cell stack which is characterized in that: the solid oxide fuel cell stack includes at least one modularized basic unit of the battery stack, and a modularized battery stack
  • the basic unit contains several single cell sealing units, and each single cell sealing unit includes a sealing support plate, a single cell, and a sealing cover arranged from bottom to top, and the single cell sealing units are stacked up and down through connectors.
  • Connect, the anode gas flow channel and the cathode gas flow channel are respectively provided on both sides of the connecting piece.
  • the edges of both sides of the connecting piece are coated with sealant for sealing connection.
  • the top and bottom of the basic unit of the modular battery stack are respectively provided
  • the top cover plate and the bottom cover plate, the side of the top cover plate facing the single cell contains the cathode gas flow channel, the other side is a smooth surface, the side of the bottom cover plate facing the single cell contains the anode gas flow channel, and the other side It is glossy.
  • the sealing support plate and the sealing cover plate are in a hollow structure, the sealing support plate and the sealing cover plate are sealed and bonded by a sealant, and the single cell is contained in the sealing support plate and the sealing cover plate.
  • the sealing support plate and the sealing cover plate are clamped and fixed.
  • the single cell of the single cell sealing unit is one or more single cells tiled to form a window structure.
  • the single cell sealing unit consists of multiple single cells tiled to form a window structure, the corresponding sealing
  • the size of the support plate and the sealing cover plate are matched according to the multiple single cells, and have a corresponding hollow structure.
  • the two or more single cells are located on the same plane, and two adjacent single cells are not in contact.
  • the connecting piece is a metal plate
  • the left and right sides of the connecting piece are respectively provided with anode gas vent holes and cathode gas vent holes
  • the left and right sides of the sealing support plate and the sealing cover plate are provided with corresponding anode gas vents.
  • the gas holes and the cathode gas vent holes, the left and right sides of the top cover plate and the bottom cover plate are provided with corresponding anode gas vent holes and cathode gas vent holes.
  • each modular battery stack basic unit may contain the same number or different numbers of single cells, and each modular battery stack basic unit is connected and fixed by a metal gasket. .
  • the left and right sides of the metal gasket are provided with anode gas vents and cathode gas vents corresponding to the anode gas vents and cathode gas vents of the single cell sealing unit, and the surrounding edges of the metal gasket are coated
  • a sealant for sealing between the basic units of a modular battery stack and the two sides of the metal gasket are coated with silver paste for current collection.
  • top cover plate and the sealing cover plate are sealed and bonded by a sealant
  • bottom cover plate and the sealing support plate are sealed and bonded by a sealant
  • the modularized battery stack basic unit contains 1-20 single cell sealing units.
  • the utility model has the advantage that the battery stack is composed of at least one modular battery stack basic unit, and each modular battery stack basic unit contains 1-20 single-cell sealing units.
  • the battery sealing units are connected by connecting pieces, and the modular battery stack basic units are connected by metal gaskets;
  • the single battery sealing unit has an outer manifold structure, that is, the single battery itself has no vent holes, and the vent holes are arranged in
  • the single cell sealing unit may only include a single cell, or it may be composed of multiple single cells tiled to form a window structure.
  • the utility model has a reasonable structure.
  • FIG. 1 is a schematic diagram of the structure of a single cell sealing unit with a single cell in Embodiment 1 of the utility model;
  • Figure 2 is an exploded view of Figure 1;
  • FIG. 3 is a schematic diagram of the assembly of the basic unit of the modularized battery stack according to the first embodiment of the utility model
  • FIG. 4 is a schematic structural diagram of a four-piece window-type single cell sealing unit according to the second embodiment of the present invention.
  • Fig. 5 is an exploded view of Fig. 4.
  • a solid oxide fuel cell stack the solid oxide fuel cell stack includes at least one modular battery stack basic unit, the modular battery stack basic unit contains 1-20 single cell package
  • Each unit cell sealing unit 100 includes a sealing support plate 2, a unit cell 3, and a sealing cover plate 4 sequentially arranged from bottom to top.
  • the sealing support plate 2 and the sealing cover plate 4 are in a hollow structure, The sealing support plate 2 and the sealing cover plate 4 are sealed and bonded by a sealant.
  • the single cell 3 in this embodiment is one piece, and the single cell 3 is accommodated in the hollow structure of the sealing support plate 2 and the sealing cover plate 4
  • the sealing support plate 2 and the sealing cover plate 4 are clamped and fixed.
  • the single cell sealing units 100 are stacked and connected up and down by a connecting piece 6.
  • the connecting piece 6 is a metal plate.
  • the two sides of the connecting piece 6 are respectively provided with anode gas flow channels and cathode gas flow channels.
  • the edges of the two sides of the connecting piece 6 are coated
  • a top cover plate 5 and a bottom cover plate 1 are respectively provided at the top and bottom of the basic unit of the modular battery stack.
  • the side of the top cover plate 5 facing the single cell 3 contains a cathode gas flow channel.
  • the other side is a smooth surface
  • the side of the bottom cover 1 facing the single cell 3 contains an anode gas flow channel
  • the other side is a smooth surface.
  • the left and right sides of the connecting piece 6 are respectively provided with anode gas vent holes 61 and cathode gas vent holes 62, and the left and right sides of the sealing support plate 2 and the sealing cover plate 4 are provided with corresponding anode gas vent holes 21 and 51 and the cathode.
  • the gas vent holes 22 and 42, the left and right sides of the top cover plate 5 and the bottom cover plate 1 are provided with corresponding anode gas vent holes 51 and 11 and cathode gas vent holes 52.
  • the anode gas enters from one side of the anode gas vent hole and exits from the other side of the anode gas vent hole.
  • the cathode gas vent holes 52, 12, 22, and 42 are designed to be elongated, and the cathode gas enters from one side of the cathode gas vent hole and exits from the other side of the cathode gas vent hole.
  • the top cover plate 5 and the sealing cover plate 4 are sealed and bonded by a sealant, and the bottom cover plate 1 and the sealing support plate 2 are sealed and bonded by a sealant;
  • FIG. 3 is the assembly process of the battery stack with two single cell sealing units 100.
  • the assembly process of the modular battery stack basic unit containing a plurality of single cell sealing units 100 is the same as the above-mentioned process by stacking connection members 6 up and down.
  • each modularized battery stack basic unit may include the same number or different numbers of single cells 3, but the number of single cells 3 is between 1 and 20.
  • the basic units of the modular battery stack are connected and fixed by metal gaskets.
  • the left and right sides of the metal gasket are provided with anode gas vents and cathodes corresponding to the anode gas vents and cathode gas vents of the single cell sealing unit 100.
  • Gas vents, the peripheral edges of the metal gasket are coated with sealant for sealing between the basic units of the modular battery stack, and the middle of the two sides of the metal gasket is coated with silver paste for current collection.
  • the modular battery stack The number of basic units of the battery stack is determined according to needs.
  • the single cell 3 of the single cell sealing unit 100 of this embodiment is four, and the four single cells 3 are tiled to form a window-type single cell sealing unit 100
  • the structure of the four single cells 3 is on the same plane, and the two adjacent single cells are not in contact.
  • the bottom cover 1, the sealing support plate 2, the sealing cover 4, and the top cover 5 are one piece each, the size of which is four
  • the single cell 3 matches exactly and has four hollow structures.
  • the window-type cell sealing unit 100 has an outer manifold structure, that is, the battery 3 itself has no vent holes, and the vent holes are arranged on the sealing support plate 2 and the sealing cover plate. 4, including anode vent and cathode vent.
  • the structural principles of the bottom cover 1, the sealing support plate 2, the sealing cover 4, and the top cover 5 are the same as in Embodiment 1, and the connection is also sealed and fixed by a sealant.
  • connection between the window-type single cell sealing unit 100 is the same as that of the first embodiment, and is assembled into a modular battery stack basic unit through the connection plate 6; the size of the connection plate 6 is adapted to the four single cells 3, and the connection piece An anode gas flow channel and a cathode gas flow channel are respectively provided on both sides of the connector 6, and the edges of the two sides of the connecting member 6 are coated with sealant for sealing connection.
  • the modular battery stack basic unit After the modular battery stack basic unit is assembled, the modular battery stack basic unit is assembled into the battery stack required by the user.
  • the modular battery stack basic unit is connected and fixed by metal gaskets, such as containing 4 modules
  • the basic unit of a modularized battery stack is a battery stack or a battery stack containing 6 modularized battery stack basic units.
  • the number of modularized battery stack basic units in the battery stack is determined according to needs.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

一种固体氧化物燃料电池堆，包括至少一模块化的电池堆基本单元，模块化的电池堆基本单元含有若干个单电池封接单元（100），每个单电池封接单元（100）包括由下至上依次设置的封接支撑板（2）、单电池（3）和封接盖板（4），单电池封接单元（100）之间通过连接件（6）上下堆叠连接，连接件（6）两面分别设有阳极气体流道和阴极气体流道，连接件（6）两面边缘涂敷密封胶，模块化的电池堆基本单元的最顶部和最底部分别设有顶盖板（5）和底盖板（1），顶盖板（5）面对单电池（3）一侧含有阴极气体流道，另一侧光面，底盖板（1）面对单电池（3）一侧含有阳极气体流道，另一侧是光面。上述固体氧化物燃料电池堆结构合理，通过采用模块化的基本电池堆单元组装电池堆，不仅电池密封性好，长期运行稳定，而且电池堆制造过程更加标准化，质量更加可控。

Description

一种固体氧化物燃料电池堆 技术领域
本实用新型涉及固体氧化物燃料电池技术领域，具体涉及一种固体氧化物燃料电池堆。
背景技术
固体氧化物燃料电池(Solid Oxide Fuel Cell，SOFC)发电系统是一种高效的能源转化装置，能将天然气、氢气、合成气等燃料中的化学能直接转化为电能，是一种可用于构建分布式发电系统的新型能源转化装置，具有很好的商业应用前景。
电池堆是SOFC发电系统的核心部件，由多个电池片以及相应的附件组成，电化学转化在电池堆中完成，电池堆阵列的设计是SOFC发电系统设计的关键之一。
经查，现有专利号为201820917507.7的中国专利《一种平板式固体氧化物燃料电池堆》，包括至少一个电池单元，每一个电池单元包括至少一片单电池、上连接件、阳极集流网、阴极集流网和下连接件，相邻两电池单元上下堆叠且共用同一连接件；封接盖板和封接支撑板密封固定，上连接件、封接盖板、封接支撑板、下连接件均设有阳极进气孔和阳极出气孔。该结构电池堆解决了电池堆的串漏气问题，使得电池堆的稳定性和寿命大为增强，但是制造过程还不够标准化、模块化，质量不好控制，因此在结构上还需进一步改进。
发明内容
本实用新型所要解决的技术问题是针对上述的技术现状而提供一种结构简单、稳定性好的固体氧化物燃料电池堆。
本实用新型解决上述技术问题所采用的技术方案为：一种固体氧化物燃料电池堆，其特征在于：该固体氧化物燃料电池堆包括至少一个模块化的电池堆基本单元，模块化的电池堆基本单元含有若干个单电池封接单元，每个单电池封接单元包括由下至上依次设置的封接支撑板、单电池和封接盖板，单电池封接单元之间通过连接件上下堆叠连接，连接件的两面分别设有阳极气体流道和阴极气体流道，连接件的两面边缘涂敷有用于密封连接的密封胶，模块化的电池堆基本单元的最顶部和最底部分别设有顶盖板和底盖板，顶盖板面对单电池的一侧含有阴极气体流道，另一侧是光面，底盖板面对单电池的一侧含有阳极气体流道，另一侧是光面。
作为改进，所述封接支撑板和封接盖板呈中空结构，封接支撑板和封接盖板之间通 过密封胶密封粘接，单电池容纳在封接支撑板和封接盖板的中空结构中通过封接支撑板和封接盖板夹紧固定。
再改进，所述单电池封接单元的单电池为一个或者多片单电池平铺组成窗口式结构，当单电池封接单元由多片单电池平铺组成窗口式结构时，相应的封接支撑板、封接盖板的大小根据多片单电池进行匹配，并具有对应中空结构。
进一步，所述单电池封接单元的单电池为二片或二片以上时，二片或二片以上的单电池位于同一平面、且相邻两片单电池不接触。
再改进，所述连接件为金属板，连接件的左右两侧分别设有阳极气体通气孔和阴极气体通气孔，封接支撑板和封接盖板的左右两侧设有对应的阳极气体通气孔和阴极气体通气孔，顶盖板和底盖板的左右两侧设有对应的阳极气体通气孔和阴极气体通气孔。
进一步，所述模块化的电池堆基本单元为一个以上，各个模块化的电池堆基本单元可包含相同数量或不同数量的单电池，各个模块化的电池堆基本单元之间通过金属垫片连接固定。
再进一步，所述金属垫片的左右两侧设有与单电池封接单元的阳极气体通气孔和阴极气体通气孔相应的阳极气体通气孔和阴极气体通气孔，金属垫片的四周边缘涂敷有用于模块化的电池堆基本单元之间密封的密封胶，金属垫片的两边中间涂敷有作为集流用的银浆。
进一步，所述顶盖板与封接盖板之间通过密封胶密封粘接，底盖板与封接支撑板之间通过密封胶密封粘接。
最后，所述模块化的电池堆基本单元含有1～20个单电池封接单元。
与现有技术相比，本实用新型的优点在于：电池堆是由至少一个模块化的电池堆基本单元组成，每个模块化的电池堆基本单元含有1～20个单电池封接单元，单电池封接单元之间通过连接片连接，模块化的电池堆基本单元之间通过金属垫片连接；单电池封接单元具有外歧管结构，即单电池本身没有通气孔，通气孔均布置在封接支撑板、封接盖板和连接件上面，单电池封接单元可以只包含一片单电池，也可以由多片单电池平铺组成窗口式结构。本实用新型结构合理，通过采用模块化的基本电池堆单元组装电池堆，不仅电池密封性好，长期运行稳定，而且电池堆的制造过程更加标准化，质量更加可控。
附图说明
图1为本实用新型实施例1中单电池为一片的单电池封接单元的结构示意图；
图2为图1的分解图；
图3为本实用新型实施例1的模块化的电池堆基本单元组装的结构示意图；
图4本实用新型实施例2的单电池为四片的窗口式单电池封接单元的结构示意图；
图5为图4的分解图。
具体实施方式
以下结合附图实施例对本实用新型作进一步详细描述。
实施例1
如图1～3所示，一种固体氧化物燃料电池堆，该固体氧化物燃料电池堆包括至少一个模块化的电池堆基本单元，模块化的电池堆基本单元含有1～20个单电池封接单元100，每个单电池封接单元100包括由下至上依次设置的封接支撑板2、单电池3和封接盖板4，封接支撑板2和封接盖板4呈中空结构，封接支撑板2和封接盖板4之间通过密封胶密封粘接，本实施例的单电池3为一片，单电池3容纳在封接支撑板2和封接盖板4的中空结构中通过封接支撑板2和封接盖板4夹紧固定。单电池封接单元100之间通过连接件6上下堆叠连接，连接件6为金属板，连接件6的两面分别设有阳极气体流道和阴极气体流道，连接件6的两面边缘涂敷有用于密封连接的密封胶，模块化的电池堆基本单元的最顶部和最底部分别设有顶盖板5和底盖板1，顶盖板5面对单电池3的一侧含有阴极气体流道，另一侧是光面，底盖板1面对单电池3的一侧含有阳极气体流道，另一侧是光面。连接件6的左右两侧分别设有阳极气体通气孔61和阴极气体通气孔62，封接支撑板2和封接盖板4的左右两侧设有对应的阳极气体通气孔21和51和阴极气体通气孔22和42，顶盖板5和底盖板1的左右两侧设有对应的阳极气体通气孔51和11和阴极气体通气孔52。阳极气体从阳极气体通气孔的一侧进入，从阳极气体通气孔另一侧出去。阴极气体通气孔52、12、22和42设计为长条形，阴极气体从阴极气体通气孔的一侧进入，从阴极气体通气孔另一侧出去。顶盖板5与封接盖板4之间通过密封胶密封粘接，底盖板1与封接支撑板2之间通过密封胶密封粘接；
图3是二个单电池封接单元100的电池堆的组装过程，含有多个单电池封接单元100的模块化的电池堆基本单元的组装过程与上述过程一样通过连接件6上下堆叠连接。
电池堆包括一个以上的模块化的电池堆基本单元时，各个模块化的电池堆基本单元可以包含相同数量或不同数量的单电池3，但单电池3的数量在1至20之间。模块化的电池堆基本单元之间通过金属垫片连接固定，金属垫片的左右两侧设有与单电池封接单元100的阳极气体通气孔和阴极气体通气孔相应的阳极气体通气孔和阴极气体通气孔，金属垫片的四周边缘涂敷有用于模块化的电池堆基本单元之间密封的密封胶，金属垫片的两边中间涂敷有作为集流用的银浆，电池堆中模块化的电池堆基本单元的数量据需要而定。
实施例2
如图4、5所示，与实施例1的区别在于：本实施例的单电池封接单元100的单电池3为四片，四片单电池3平铺组成窗口式单电池封接单元100的结构，四片单电池3位于同一平面、且相邻两片单电池不接触，底盖板1、封接支撑板2、封接盖板4、顶盖板5为各一片，大小与四片单电池3正好匹配，具有四个中空结构，窗口式单电池封接单元100具有外歧管结构，即电池3本身没有通气孔，通气孔均布置在封接支撑板2和封接盖板4上，包括阳极通气孔和阴极通气孔。底盖板1、封接支撑板2、封接盖板4、顶盖板5的结构原理实施例1相同，连接也是采用密封胶密封固定。
窗口式单电池封接单元100之间的连接与实施例1一样也是通过连接板6连接组装成模块化的电池堆基本单元，连接板6的大小与四片单电池3相适配，连接件6的两面分别设有阳极气体流道和阴极气体流道，连接件6的两面边缘涂敷有用于密封连接的密封胶。
模块化的电池堆基本单元组装好之后，由这个模块化的电池堆基本单元组装成用户所需要的电池堆，模块化的电池堆基本单元之间通过金属垫片连接固定，如含有4个模块化的电池堆基本单元的电池堆或者含有6个模块化的电池堆基本单元的电池堆，电池堆中模块化的电池堆基本单元的数量据需要而定。
以上所述仅是本实用新型的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本实用新型技术原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本实用新型的保护范围。

Claims (9)

  1. 一种固体氧化物燃料电池堆，其特征在于：该固体氧化物燃料电池堆包括至少一个模块化的电池堆基本单元，模块化的电池堆基本单元含有若干个单电池封接单元，每个单电池封接单元包括由下至上依次设置的封接支撑板、单电池和封接盖板，单电池封接单元之间通过连接件上下堆叠连接，连接件的两面分别设有阳极气体流道和阴极气体流道，连接件的两面边缘涂敷有用于密封连接的密封胶，模块化的电池堆基本单元的最顶部和最底部分别设有顶盖板和底盖板，顶盖板面对单电池的一侧含有阴极气体流道，另一侧是光面，底盖板面对单电池的一侧含有阳极气体流道，另一侧是光面。
  2. 根据权利要求1所述的固体氧化物燃料电池堆，其特征在于：所述封接支撑板和封接盖板呈中空结构，封接支撑板和封接盖板之间通过密封胶密封粘接，单电池容纳在封接支撑板和封接盖板的中空结构中通过封接支撑板和封接盖板夹紧固定。
  3. 根据权利要求2所述的固体氧化物燃料电池堆，其特征在于：所述单电池封接单元的单电池为一个或者多片单电池平铺组成窗口式结构，当单电池封接单元由多片单电池平铺组成窗口式结构时，相应的封接支撑板、封接盖板的大小根据多片单电池进行匹配，并具有对应中空结构。
  4. 根据权利要求3所述的固体氧化物燃料电池堆，其特征在于：所述单电池封接单元的单电池为二片或二片以上时，二片或二片以上的单电池位于同一平面、且相邻两片单电池不接触。
  5. 根据权利要求1所述的固体氧化物燃料电池堆，其特征在于：所述连接件为金属板，连接件的左右两侧分别设有阳极气体通气孔和阴极气体通气孔，封接支撑板和封接盖板的左右两侧设有对应的阳极气体通气孔和阴极气体通气孔，顶盖板和底盖板的左右两侧设有对应的阳极气体通气孔和阴极气体通气孔。
  6. 根据权利要求5所述的固体氧化物燃料电池堆，其特征在于：所述模块化的电池堆基本单元为一个以上，各个模块化的电池堆基本单元可包含相同数量或不同数量的单电池，各个模块化的电池堆基本单元之间通过金属垫片连接固定。
  7. 根据权利要求6所述的固体氧化物燃料电池堆，其特征在于：所述金属垫片的左右两侧设有与单电池封接单元的阳极气体通气孔和阴极气体通气孔相应的阳极气体通气孔和阴极气体通气孔，金属垫片的四周边缘涂敷有用于模块化的电池堆基本单元之间密封的密封胶，金属垫片的两边中间涂敷有作为集流用的银浆。
  8. 根据权利要求1至7任一权利要求所述的固体氧化物燃料电池堆，其特征在于：所述顶盖板与封接盖板之间通过密封胶密封粘接，底盖板与封接支撑板之间通过密封胶密封粘接。
  9. 根据权利要求1至7任一权利要求所述所述的固体氧化物燃料电池堆，其特征在于：所述模块化的电池堆基本单元含有1～20个单电池封接单元。
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