Flow battery system
A liquid flow battery and liquid flow technology, which is applied in the field of chemical energy storage, can solve the problems of a large amount of pump work and deterioration of the SOC state of the flow battery, and achieve the goal of improving utilization rate, reducing the influence of concentration polarization, and broad application prospects Effect
Active Publication Date: 2015-04-22
HUANENG CLEAN ENERGY RES INST +1
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Problems solved by technology
[0004] When the flow battery is working, the positive and negative electrolytes are continuously circulated through the liquid guide pump, which requires a lot of pump work. At the same time, with the circulation, the concentration of high and low valence ions in the positive and negative electrolytes changes continuously, making the discharge process The output voltage is constantly changing, and at the same time, due to the large concentration polarization phenomenon, the SOC state during the charge and discharge process of the flow battery is deteriorated
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[0027] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.
[0028] figure 1 A schematic structural diagram of a liquid flow battery system of the present invention is given, mainly including:
[0029] Flow battery or flow battery pack 8, positive high-level electrolyte storage tank 5, positive low-level electrolyte storage tank 4, negative high-level electrolyte storage tank 7, negative low-level electrolyte storage tank 6, etc. The spatial layout potential of the positive high-level electrolyte storage tank 5 is higher than the spatial layout potential of the positive low-level electrolyte storage tank 4, and the spatial layout potential of the negative high-level electrolyte storage tank 7 is higher than that of the negative low-level electrolyte storage tank. The spatial arrangement potential of tank 6. The ion valence state of the positive electrode electrolyte in the positive high-level electrolyt...
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The invention provides a flow battery system. The flow battery system comprises a flow battery or a flow battery pack, a positive electrode high-level electrolyte liquid storage tank, a positive electrode low-level electrolyte liquid storage tank, a negative electrode high-level electrolyte liquid storage tank and a negative electrode low-level electrolyte liquid storage tank, wherein the positive electrode high-level electrolyte liquid storage tank is connected with a positive electrode upper port of the flow battery or the flow battery pack by a pipeline; the positive electrode low-level electrolyte liquid storage tank is connected with a positive electrode lower port of the flow battery or the flow battery pack by a pipeline; the negative electrode high-level electrolyte liquid storage tank is connected with a negative electrode upper port of the flow battery or the flow battery pack by a pipeline; and the negative electrode low-level electrolyte liquid storage tank is connected with a negative electrode lower port of the flow battery or the flow battery pack by a pipeline. According to the flow battery system, part of pump power consumed in a charging process is converted into potential energy and then is stored so that the pump power consumption in a discharging process is reduced and the energy saving effect is realized; and meanwhile, the concentrations of positive electrode electrolyte and negative electrode electrolyte keep basically constant in the discharging process and the stability of voltage in the charging / discharging process can be ensured.
Description
technical field [0001] The invention relates to the technical field of chemical energy storage by electrochemical reaction, in particular to a liquid flow battery system. Background technique [0002] Energy is the material basis for promoting social progress and human survival. With the development of society and economy, the rate of global fossil energy consumption is increasing year by year, which has brought serious environmental problems such as global warming and ecological damage. Looking forward to the future energy of mankind, in addition to rationally developing and utilizing coal, oil, and natural gas, and emphasizing the development of hydraulic power, it is necessary to further develop new energy sources, mainly nuclear energy, solar energy, biomass energy, hydrogen energy, and various renewable energy sources, such as Geothermal energy, ocean energy, wind energy, etc. constitute a comprehensive world energy system with nuclear energy as the leading role. Rene...
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IPC IPC(8): H01M8/20H01M8/02H01M8/04276
CPCH01M8/18H01M8/2465Y02E60/50
Inventor 许世森刘明义郑建涛徐越韩临武裴杰徐海卫曹传钊
Owner HUANENG CLEAN ENERGY RES INST