Flow cell and flow cell stack
A technology of flow battery and flow frame, which is applied in the direction of regeneration fuel cell, fuel cell grouping, fuel cell components, etc., can solve the problems such as difficulty in improving the efficiency and power of flow battery, and achieves simple structure and low manufacturing cost. , the effect of reducing internal resistance
Active Publication Date: 2013-11-27
DONGFANG ELECTRIC (CHENGDU) HYDROGEN FUEL CELL TECH CO LTD
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Problems solved by technology
[0005] The present invention aims to provide a flow battery and a flow battery stack to solve the problem that the efficiency and power of the flow battery in the prior art are difficult to improve
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[0028] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in a variety of different ways defined and covered by the claims.
[0029] As the first aspect of the present invention, a flow battery is provided. Such as Figure 3 to Figure 6 As shown, the flow battery includes: a first bipolar plate 10, a second bipolar plate 20, two flow frames 40, two electrodes 50 and an ion exchange membrane 60, the ion exchange membrane 60 is clamped between the two electrodes 50 In between, the two electrodes 50 are embedded in the cavities of the two liquid flow frames 40 respectively, and a reaction space is formed between the collecting surfaces of the first bipolar plate 10 and the second bipolar plate 20 opposite to each other. The current collecting surface of the bipolar plate 10 includes a first concave portion 11, and the current collecting surface of the second bipolar pla...
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Abstract
The invention provides a flow cell and a flow cell stack. The flow cell comprises a first bipolar plate, a second bipolar plate, two flow frames, two electrodes and an ion exchange membrane, wherein the ion exchange membrane is clamped between the two electrodes; the two electrodes are embedded in cavities of the two flow frames respectively; a reaction space is formed between the opposite current collection surfaces of the first bipolar plate and the second bipolar plate; the current collection surface of the first bipolar plate comprises a first concave part; the current collection surface of the second bipolar plate comprises a first convex part which is matched with the first concave part; the two electrodes and the ion exchange membrane form a concave-convex structure which is adaptive to the shape of the reaction space, between the first bipolar plate and the second bipolar plate. Since the electrodes and the ion exchange membrane form the concave-convex structure, the areas of the electrodes and the ion exchange membrane are increased, the internal resistance of the flow cell is reduced, the current density of the flow cell is increased, and the purpose of improving the efficiency and the power of the flow cell can be achieved.
Description
Technical field [0001] The present invention relates to the field of batteries, and more specifically, to a flow battery and a flow battery stack. Background technique [0002] Such as figure 1 with figure 2 As shown, the flow battery in the prior art includes a first bipolar plate 10', a second bipolar plate 20', two flow frames 40', two electrodes 50' and an ion exchange membrane 60'. The membrane 60' is clamped between two electrodes 50', the two electrodes 50' are respectively embedded in the cavities of the two liquid flow frames 40', and the two liquid flow frames 40' are clamped in the first bipolar Between the plate 10' and the second bipolar plate 20'. When a plurality of flow batteries of the above structure are stacked and assembled in sequence, a flow battery stack is formed. [0003] The first bipolar plate 10', the second bipolar plate 20', the two electrodes 50' and the ion exchange membrane 60' in the prior art are all planar structures. Under the assembly press...
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IPC IPC(8): H01M8/18H01M8/24H01M8/02
CPCY02E60/528Y02E60/50
Inventor 谢光有房红琳杜坤李婷刘红丽汤浩
Owner DONGFANG ELECTRIC (CHENGDU) HYDROGEN FUEL CELL TECH CO LTD