Fuel cell system
A technology of fuel cell system and fuel cell stack, which is applied in the direction of fuel cells, circuits, electrical components, etc., can solve the problems of difficult temperature control of fuel cell stacks, inert cooling requirements, etc., to reduce installation costs, improve temperature control, Realize the effect of temperature control
Inactive Publication Date: 2010-05-12
莱茵兹－迪茨通斯－有限责任公司
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Additional problems arise due to the fact that the electrical insulation between different components (such as connections for cooling medium and current extraction, etc.) must be separated from each other
Another disadvantage is that it makes temperature control of the fuel cell stack difficult even in the case of an end plate that meets the above requirements, because the end plate generally contains high-quality metal parts that, due to their heat capacity, make the Response inert to fuel cell stack cooling requirements
Method used
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Embodiment Construction
[0027] figure 1 A fuel cell system 1 according to the invention is shown. In this figure, a fuel cell stack 2 of intermediate plates can be seen, which consists of a plurality of plate-shaped fuel cells stacked on top of one another electrically connected in series. Such a fuel cell stack is arranged between two end plates 3 . The pressure on the fuel cell stack can be applied, for example, by means of clamping screws introduced through the through-holes 13 and locked on the side of the end plate facing away from the fuel cell stack, alternatively also with clamping straps or clamping The reed applies this pressure.
[0028] The detailed construction of a single end plate 3 is by means of figure 2 illustrate. The figure shows an end plate base body 4 and a contact panel 5 ( figure 2 Shows the not-yet-installed position of the touch panel 5, its finished installed position at figure 1 visible in the end plate). The end plate base body 4 has a line structure 6 for a cooli...
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The invention relates to a fuel cell system (1) which is characterized in that a fuel cell stack (2) comprised of a plurality of intermediate plates is enclosed between two end plates (3) to compressthe intermediate plates. At least one end plate (3) has an end plate base (4) and a contact surface plate (5) linked therewith to electrically contact the fuel cell stack. The end plate base (4) is furthermore provided with channel structures (6) designed for a cooling circuit for cooling the fuel cell stack. The end plate is deformed in such a manner that it is capable of applying an even compression to the fuel cell stack and to balance the setting behavior of the stack and of the end plate.
Description
technical field [0001] The present invention relates to fuel cell systems. Background technique [0002] Fuel cell systems are known in which a fuel cell stack (Brennstoffzellenstack) consisting of a plurality of intermediate plates is inserted between two end plates for pressing the intermediate plate, said fuel cell stack being a series of plate-shaped The fuel cell. [0003] This compaction is necessary for many reasons. On the one hand, the pressure action of the end plates causes the individual intermediate plates, that is to say the plates in the individual fuel cells, to be pressed against each other with as uniform a pressure as possible, so that the diffusion processes taking place in the individual fuel cells and the electrical conductivity from plate to plate are ensured. . Furthermore, in the construction of most fuel cell systems, the pressure of the end plates is required for the sealing function of the gas or liquid circulation between the intermediate plat...
Claims
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Login to View More IPC IPC(8): H01M8/00H01M8/247
CPCH01M8/247Y02E60/50
Inventor R·施特罗贝尔S·洛尔T·卡勒D·格拉夫尔D·塔施M·勒姆
Owner 莱茵兹－迪茨通斯－有限责任公司