Electrode frame for all-vanadium flow battery

Abstract

The invention mainly discloses an electrode frame for all-vanadium flow battery. The technical scheme is as follows: an electrode cavity is arranged in the middle of an electrode frame main body, a positive liquid inlet, a positive liquid outlet, a negative liquid inlet and a negative liquid outlet are respectively arranged at four corners of the electrode frame; the positive liquid inlet is orderly connected with a positive liquid inlet main runner, a positive liquid inlet first sub-runner and a positive liquid inlet interlayer runner; the positive liquid outlet is orderly connected with a positive liquid outlet main runner, a positive liquid outlet first sub-runner and a positive liquid outlet interlayer runner; an ion exchange membrane is arranged at the reverse side of the electrode frame main body; sealing grooves are arranged at the positive liquid inlet, the positive liquid outlet, the electrode cavity and the edges around the ion exchange membrane, sealing strips are arranged at the sealing grooves, and the edges around the ion exchange membrane are fixed through the sealing strips. Through the electrode frame disclosed by the invention, the distribution uniformity of the electrolyte can be improved, the battery reaction efficiency is improved, and the split sealing design reduces the leakage current and the electric pile thickness, the assembling procedure is reduced,the assembling difficulty is lowered, and the electric pile cost is lowered.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to an electrode frame for an all-vanadium redox flow battery. Background technique [0002] All-vanadium redox flow battery operates at normal temperature and pressure, safe and reliable, even if the positive and negative electrolytes are mixed, there will be no explosion and combustion; long cycle life, deep charge and discharge, good charge and discharge characteristics, fast response, energy High efficiency; vanadium ions have high electrochemical reversibility, small electrochemical polarization, and are suitable for fast charging and discharging with large currents; power and capacity are determined by the number of batteries and electrolytes, so power and capacity can be independently designed and flexible; Environmentally friendly, the electrolyte can be recycled and regenerated. The all-vanadium redox flow battery mainly assembles electrodes, bipolar plates, ion exchange ...

AI Technical Summary

Problems solved by technology

[0003] At present, the volume of all-vanadium redox flow batteries is large, and the distribution of electrolyte is easy to be uneven, which affects the performance of the battery system; some electrode frame designs require more ion-exchange membranes and bipolar plate materials, which increases production costs; and processing and assembly require Punching the ion exchange membrane and bipolar plate increases the battery production process, which is not conducive to the industrialization of the battery system

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