An electrode frame structure of a single cell in a flow battery, a single cell and a stack

Abstract

The invention discloses an electrode frame structure of single batteries in a redox flow battery as well as the single battery and an electric pile, wherein the structure of the electric pile is formed by sequentially combining a cover plate, an end plate, a collector plate, a plurality of single batteries, a collector plate, a shunt plate, a collector plate, a plurality of single batteries, a collector plate, an end plate and a cover plate, and the two cover plates arranged at the two ends are respectively fastened by a fastener in a mechanical way; an electrode frame assembly comprises a film frame and an electrode frame which are sealed by a sealing strip or a buckle, or in a combining way; the physical structure stability of an ionic membrane is greatly improved by the structure of the film frame in the assembly process, the electric pile is convenient to assemble, and the stability of an electric pile module is improved; due to the design that the film frame is integrated with the electrode frame, the distribution of a flow field is optimized, the contact resistance between the membrane and an electrode is reduced, and the battery efficiency is improved. The electric pile is formed by N half piles, so that the power of the single pile can be improved, the distribution uniformity of electrolyte of a main pipeline can be effectively guaranteed, the effects of pre-assembling and pre-checking the half piles for the assembly of the electric pile can be achieved, and the electric pile is convenient to maintain.

Description

technical field [0001] The invention relates to the technical field of a liquid flow battery, in particular to an electrode frame structure of a single cell in a liquid flow battery, a single cell and an electric stack. Background technique [0002] Flow battery (flow redox battery or redox flow battery) is a new type of large-scale electrochemical energy storage battery. It is different from batteries that usually use solid material electrodes or gas electrodes. The active substance is a flowing electrolyte solution, and the positive and negative electrodes The electrolytes are separated and circulated separately, and its most notable feature is large-scale power storage and independent design of power and capacity. Flow battery is a kind of high-performance battery, which has the characteristics of high capacity, wide application field (environment), and long cycle life. Under the situation of widespread use of renewable energy, flow batteries, as an energy storage produc...

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Problems solved by technology

[0004] In view of this, the present invention proposes an electrode frame structure of a single cell in a flow battery, a single cell, and a stack to solve the problem of leakage of the stack due to the aging of the polymer material during the long-term operation of the stack in the existing battery. liquid problem

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