Zinc-based single flow battery operation method
A liquid flow battery and operating method technology, which is applied in the direction of fuel cells, regenerative fuel cells, fuel cell additives, etc., can solve problems affecting battery performance and service life, reduce system energy efficiency, and reduce battery Coulombic efficiency. System pump consumption, reduced system pump consumption, and improved battery performance
Active Publication Date: 2022-05-13
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology
The existence of leakage current will reduce the coulombic efficiency of the battery, and the voltage uniformity will deteriorate, which will affect the performance and service life of the battery
In addition, the energy consumption of the circulating pump in the zinc-bromine single flow battery will also reduce the energy efficiency of the system
Method used
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Embodiment 1
[0030] Zinc-bromine single-flow battery includes 1 electric valve for positive liquid outlet, 2 electric valve for positive liquid inlet, 3 electric stacks, 4 electric valve for negative liquid outlet, 5 electric valve for negative liquid inlet, 6 liquid storage tank, and 7 cycles Pump. The zinc-bromine single flow battery includes a stack 3 formed by connecting five single cells in series; the positive liquid outlet of the electric stack 3 passes through the electric valve 1 of the positive liquid outlet, and the electric valve 4 of the negative liquid outlet passes through the electric valve 4 of the negative liquid outlet and their connecting pipelines are connected to the electrolyte liquid storage tank 6; the positive liquid inlet of the stack 3 is connected to the negative liquid inlet through the electric valve 5 of the negative liquid inlet through the electric valve 2 of the positive liquid inlet , and their connecting pipelines are connected to the electrolyte liquid...
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The invention relates to an operation method of a zinc-bromine single-flow battery. The zinc-bromine single-flow battery comprises a zinc-bromine single-flow single battery or an electric pile formed by connecting more than two single batteries in series; the method comprises the following steps: 1) after the zinc-bromine single flow battery is assembled and before the battery is charged and discharged for the first time, opening a positive electrode liquid outlet electric valve, a positive electrode liquid inlet electric valve, a negative electrode liquid outlet electric valve and a negative electrode liquid inlet electric valve, and circularly flowing electrolyte in the battery, so that an electrode is completely infiltrated by the electrolyte; 2) carrying out charging and discharging operation of the zinc-bromine single flow battery; in the charging process, the positive electrode liquid outlet electric valve and the positive electrode liquid inlet electric valve are always in a closed state, the negative electrode liquid outlet electric valve and the negative electrode liquid inlet electric valve are opened, and the circulating pump is started; in the discharging process, the positive electrode liquid outlet electric valve, the positive electrode liquid inlet electric valve, the negative electrode liquid outlet electric valve and the negative electrode liquid inlet electric valve are all in a closed state, and the circulating pump is closed. The battery performance and the voltage uniformity can be improved; and system pump consumption is reduced.
Description
technical field [0001] The invention relates to the technical field of flow batteries, in particular to the field of zinc-bromine single flow batteries. Background technique [0002] With the depletion of fossil energy, the development and utilization of renewable energy such as wind energy and solar energy has become the focus of attention of all countries. Due to the discontinuity and instability of wind energy and solar energy affected by weather and other factors, this will cause an impact on the grid during the grid connection process of renewable energy power generation, affecting the quality of power supply and the stability of the grid. Energy storage technology can solve this problem and ensure the efficient and stable operation of renewable energy power generation grid connection. Energy storage technologies are mainly divided into two categories: physical energy storage and chemical energy storage. Among them, chemical energy storage represented by all-vanadium ...
Claims
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IPC IPC(8): H01M8/04276H01M8/04955H01M8/18H01M8/2455
CPCH01M8/188H01M8/2455H01M8/04276H01M8/04955
Inventor 李先锋许鹏程张华民
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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