The pursuit of long life, security and ease of use of energy storage battery to set sumitomo electric smart in the integration of all vanadium flow batteries ~

First of all, let's take a look at the structure and principle of "flow battery"."Oxidation also concentrate stream" of "Redox" (Redox) is composed of active substances (substances produced by chemical changes in the electrical) reduction (reduction) and oxygen (oxidation) of vocabulary, through "Flow (Flow)" refers to the pumps make external tank storage of active substances in solution (the electrolyte) form a loop (Flow).As the name implies, the vanadium flow batteries is a kind of form in pumps make electrolyte circulation, through ion REDOX reaction for large energy storage battery charging and discharging.Its basic form is very simple, including the cell stack (formed from liquid reflux type battery monomer stack), electrolyte, electrolyte storage tank, electrolyte circulation pumps and pipe fittings.The electrolyte used vanadium sulphate aqueous solution.All vanadium flow batteries took advantage of the current flow is negative valence vanadium ion (ion charge number) will change reaction respectively.Number for the adjustment of the cathode electron, proton move through the diaphragm of separating the poles, the resulting current, this is the principle.

Known as the large capacity storage battery including lithium batteries, sodium sulfur (NAS) batteries, etc.Lithium battery, in particular, are widely used in smart phones, PC and electric cars, and other areas of the people's livelihood.In contrast, the vanadium flow batteries need tanks and pumps, the whole system is very large, so mainly as a fixed type energy storage device and supply in the market.

Compared with other battery, full of vanadium flow batteries specialty lies in the "long life".It is not through the electrode, but through the electrolyte ion REDOX reaction of charge and discharge, so the electrodes and the electrolyte degradation is rarely.The electrolyte can be used semi - permanent.Design life of 20 years.Due to its life is not about cycle count, so the cycle count indefinitely.The second specialty is "high security".Electrolyte aqueous solution USES incombustible, all sorts of equipment is made up of flame retardant materials, so the fire risk is extremely low.The third one is a specialty "the design of the high degree of freedom".The quantity of discharge time capacity, battery electrolyte reactor number decision power, so the energy storage battery to achieve the design of the capacity of independent power and time.In addition, it is from the same tanks to supply general electrolyte battery monomer, so each monomer battery charging status always stay the same, easy to use.In addition, the vanadium flow batteries can also be in the process of charging and discharging test its electromotive force, in terms of performance, suitable for generating irregular renewable energy and system stabilization cases of complex charging and discharging.In conclusion, the vanadium flow batteries for meet the demand of energy storage battery relevant optimization design.

Although total vanadium flow batteries structure simple, but want to make sure that in 20 years durable, is not easy.Sumitomo electric将长期积累的知识与见解投入到该电池的开发中，包括20年不漏液电池单体的开发、将薄壁大面积平板状材料堆叠成约100个电池单体的构造设计、以及构成电池堆的电极、隔膜和双极板之类功能材料等的选择。1985年，住友电工着手开发全钒液流电池；2001年，全钒液流电池得以事业化，并被依次引进至客户处。从其优点来说，客户储存低价夜间电力并在白天用电高峰期放电，可节约电费，而电力公司则实现了负荷平准化。2010年左右，可再生能源作为全球变暖对策被引进至世界各国，人们指出了大容量储能电池的重要性，对大容量储能电池的关注也持续至今。

In the field of renewable energy, is one of the effectiveness of the energy storage battery can power fluctuations.After using energy storage battery, wave power can be absorbed, flat wave.In addition, it also is very effective for frequency control.In view of the fluctuation of supply and demand, the energy storage battery can instantly realize the equilibrium of supply and demand, maintain a certain frequency.

Europe and the United States and China have begun to rapidly promote the whole development of vanadium flow batteries related.Sumitomo electric has accumulated knowledge and insight in the field of practice.Sumitomo electric的全钒液流电池事业于2015年迎来了关键性节点。即在北海道和美国加州开展的大规模实证事业。现在，这些实证事业已结束，并进入到实际运用的阶段。换言之，做好万全准备后，全钒液流电池的市场开拓活动已然起步。

Inside the sumitomo electric industries, energy systems, business development department is responsible for all vanadium flow batteries.The department's goal is to "with the introduction of renewable energy, new energy market expanding, according to the market to develop a series of products and solutions, and implement its ShiYeHua" minister yano filial piety (the department).One of the biggest task is all the ShiYeHua vanadium flow batteries.In order to achieve this, what needs to be done?

"In Japan, a large number of the introduction of renewable energy electricity services, and actively introduce renewable energy customers are our priority.In Japan, first target is the world's largest market -- North America.After empirical experiments in California, the product has entered the stage of commercial.Many power companies are focused on long-term battery for long life and safety of all vanadium flow batteries to give great expectations.Especially in the electrolyte can be half a permanent use this, use the longer the time, is not only the cost, also can alleviate the pressure on the environment.In addition, in Australia, one of the main producing area of vanadium as the pin mode of origin, locally build relationships at the same time, we also conducted all vanadium flow batteries supply business.Australia's environmental protection consciousness strongly, is an advanced region of decarburization related measures, employment is also very important, of course.In the long run, as one of the candidates to fill the coal industry to cut vacancy industries, people to give hope to the relevant industries of vanadium.In Europe, we have to Belgium's factory, is committed to conduct KuoXiao business in Europe.In the future, I want to cut costs further, let customers will all vanadium flow batteries grid used all over the world, contribute to building a decarburization society."(yano)