In 1974, NASA's first to put forward the principle of flow battery.At the same time, Japan's industrial technology research institute (research) * 1 also started the basic research.Around the year 1980, with the air conditioning popularity in Japan, power demand difference between day and night has become a big issue.Standardization countermeasures of people think is "load", the stored surplus electricity at night, for the day power consumption.In addition, Japan also launched the national project "moonlight" plan, set out to develop, including all vanadium flow batteries, 4 kinds of new type of energy storage batteries, used to store electricity.During the period, sumitomo electric industries to get rid of relying too much on the cause of the cable constitution, began to grope for a new business subject.One is that the power storage battery.Because sumitomo electric think in addition to the generation and transmission, battery will be indispensable in the future.Then "material" development task the whole development of vanadium flow batteries have been adopted as the new theme.At the time of the couple, toshio heavy pine was promoted to head of the development.It was in 1982.

But to get through to heavy pine and other development team members.You to consider using our proposal in a university of vanadium electrolyte.After implementation of the test, after the accumulation of monomer battery materials technology also come in handy, fast results are drawn.With chromium iron electrolysis liquid ratio, using class vanadium electrolyte electromotive force is 1.4 times that of power to achieve 2 times, the energy density is about three times, the generated hydrogen also dropped sharply.Team members saw ShiYeHua dawn.

* 1 at the time of electronic technology research institute

As the change of The Times, in the late 1990 s, with the progress of the liberalization of electricity, electricity prices fell.Electric power company changed the policy, that is, from the viewpoint of effective application of power in the middle of the night, in a setting customer energy storage battery and sell cheap electric power in the middle of the night.For such demand, sumitomo electric industries since 2001 to the university and the factory supply all vanadium flow batteries products.But the heavy expectations pine and other team members.Vanadium flow batteries all of the time are not durable, use after a period of time, will appear one after another of the electrolyte leakage fault.Because of the problem difficult to solve, in 2005, the management decided to pull out all vanadium flow batteries business.Subsequently, troubleshooting became the focus.

The turning point came in 2009.Put forward the green New Deal in the United States, by the large volume of renewable energy for electricity storage battery demand in the market gradually.In Japan, the timing of the introduction of renewable energy have been mature.Sumitomo electric在开展设备撤除等善后工作的同时，致力于查明以往故障的原因并探讨对策。RF电池开发部长山西克也认为“时机已成熟”。

In 2012, yokohama, making the 1000 kw level test system is built up, began to develop technical inspection test.The equipment to harvest a lot of, in the process of communication with the market also.In 2015, with the Energy resources hall, subsidies, Hokkaido electric power co., LTD (hereinafter referred to as the "Hokkaido electric power") began to implement large-scale empirical studies, and Japan's national research and Development as a legal person of New Energy and Industrial Technology Development Organization (New Energy and Industrial Technology Development Organization, hereinafter referred to as the "NEDO) together in California has carried out positive career, Hokkaido electric co., LTD (hereinafter referred to as the" grid "Hokkaido) adopted total vanadium flow batteries equipment.

On the other hand, to the bold challenges of the vanadium flow batteries has continues today.The biggest issue is how to achieve customer satisfaction.As a cost-cutting measure, team members to high power, high energy density and the development of low electrolyte.

Key elements to cut costs is to "high power".The key lies in the cell stack.Shanxi team members around the "high power" such as the performance increase point, promote the related measures.

"We expect by modified electrode materials and membrane materials, development of pressure loss can be reduced while the electrolyte circulation battery monomer structure and so on, to achieve high power.Development of electrolyte and high power is ours.We according to the properties of the electrolyte, committed to the development of a cell stack optimize materials and structure design.In addition, we hope that by the container to receive the whole equipment and so on, to survey perspective to grasp the overall system, thus realize the miniaturization, that it is also necessary for cutting costs.At the same time, we are in the development through the optimization of the overall target system development."(shanxi)

In addition, the team members also devoted to the development for a new era of cheap new electrolyte.Electrolyte development lead dong grace since induction, has been engaged in the development of new electrolyte.