VANADIUM FLOW BATTERY USING DIFFERENT-LAYER ARRANGEMENT

WIPO Patent Application WO/2024/031923

A1

Provided in the present invention is a vanadium flow battery using different-layer arrangement. The battery comprises a power unit, an electrolyte storage tank and a liquid pipeline, wherein an anode side and a cathode side of the power unit are separately provided with an electrolyte loop; the electrolyte storage tank comprises an anode electrolyte storage tank and a cathode electrolyte storage tank; and a gas phase balance pipe is connected between a gas space of the anode electrolyte storage tank and a gas space of the cathode electrolyte storage tank. The battery further comprises a negative-pressure protection channel, which makes the gas spaces of the electrolyte storage tank be in communication with the liquid pipeline. In the present invention, after a pump stops working, the negative-pressure protection channel can suck in gas from the gas spaces of the electrolyte storage tank, such that electrolyte in the liquid pipeline can smoothly fall back to the electrolyte storage tank, and the power unit being damaged by a negative pressure occurring in the power unit due to the difference between the heights of the power unit and the electrolyte storage tank is avoided, thereby improving the safety of the vanadium flow battery.

WANG XIN (CN)
NAN YI (CN)
LIN BOSHENG (CN)
JIANG HONGDONG (CN)

PCT/CN2022/143493

February 15, 2024

December 29, 2022

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WONTAI POWER CO LTD (CN)

H01M8/04228; H01M8/18

WO2015174282A1

2015-11-19

CN217822889U	2022-11-15
JP2003123807A	2003-04-25
JP2012164530A	2012-08-30
CN108598529A	2018-09-28
JP2015232960A	2015-12-24

SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)

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