Application of lithium titanate in energy storage

The development of renewable energy industry is an important pillar for promoting green energy development. 2017 was a year of rapid development of renewable energy in China and rapid progress of global energy reform.

Data show that by the end of 2017, China had installed 340 million kilowatts of hydropower, 164 million kilowatts of wind power and 130 million kilowatts of photovoltaic power, with renewable energy accounting for 26 percent of total power generation. It can be seen that China has made great progress in renewable energy power generation.

Energy storage and renewable energy are like "twin brothers", so how big is the energy storage industry? According to some analysis, energy storage accounts for 10%-15% of the power industry. How to achieve the goal of 80% renewable energy by 2050 without energy storage? If renewable energy is uncontrollable, how to achieve 80%? The industry believes that the market price mechanism is the key to the development of energy storage, then, through what policies, reflect the value of power grid stability. Chen haisheng, deputy director of the institute of engineering thermophysics of the Chinese academy of sciences and chairman of the zhongguancun energy storage industry technology alliance, believes that "we should have confidence in the development of the system and mechanism and in the development of energy storage technology itself."

Yes, how can any enterprise do well if it has no confidence in the industry? Today, I'd like to tell you about this company -- yinlong new energy co., LTD. (hereinafter referred to as "yinlong new energy").

What has happened to yinlong new energy in this decade? How did energy storage technology evolve?

Energy storage technology comes from the United States aotaiyinlong new energy has been in the storage of energy

The international market is riding high. Energy storage technology of the new energy comes from the United States Olympic silver titanium company (hereinafter referred to as "titanium"), the most valuable of the titanium technology in energy storage, in December 2007, the titanium power company AES sales to the United States for two 1 mw frequency control system, in 2009 formally put into commercial operation, verified by successful application of battery technology to the potential of grid; From 2013 to 2016, oti successively sold three sets of lithium titanate battery energy storage systems for smoothing new energy power generation and frequency modulation to Hawaii institute of natural energy, a total of 4MW/1MWh. During this period, it delivered 1MW/250KWh lithium titanate frequency modulation system to vestas and put it into operation in 2014. In the same year, another 2MW/397KWh energy storage system was sold to TSK and put into operation in 2015.

It is not difficult to find that the scale of the above demonstration projects is not very large, are a single set of systems 1 mw to 2 mw. Through these projects, we have demonstrated the capabilities of aotec and yinlong new energy. At the same time, it also faces many challenges: first, how to make the energy storage system operate economically; Secondly, the design life of the lithium titanate system of oti is 20-25 years, the earliest one is 9 years now, how to prove to the customer really has such a long life? Therefore, during the process from design to delivery, the project also developed the simulation platform software -- thermal management system. The excellent technical strength of otti in thermal management plays a crucial role in the safety, life, reliability and comprehensive performance of lithium titanate energy storage system. According to polestar power network, in order to make the battery to achieve the best temperature state, 24V/70Ah module in every two cells between the design of heat conductivity, in order to further improve the heat dissipation performance, 36V module than 48V module reduced the number of cells, but also increased the thickness of the internal thermal conductivity of aluminum sheet to improve the thermal conductivity coefficient.

"For the international market, we escaped from the international market for a period of time, but we have been in the reserves, energy storage as the project delivery, silver long new energy from 2010 to 2012, completed acquisition of the titanium companies in the United States has 100% this year full control of the titanium companies in the United States, now silver long new energy focus on electric vehicle, profit growth quickly. At the same time, we are returning to the international energy storage market. Li jing, senior sales director.

The alti-ess container energy storage system improves operational efficiency and reduces carbon emissions

At the international energy storage summit and exhibition 2018 just held in the past, yinlong new energy was well prepared and launched a major attack with the alti-ess container energy storage system.

Advanced energy storage technologies are contributing to grid reform to make the grid more efficient in responding to power generation, consumption and policy changes. According to polestar power network, alti-ess container energy storage system is a cleaner, more energy efficient and more efficient power grid stability management system. It is a set of energy management platform that can be universal, intelligent and with expandable power. Based on advanced lithium titanate technology, alti-ess responds to frequency fluctuations in milliseconds by releasing or absorbing power from the grid, thereby improving the utilization rate of equipment and production capacity, improving operational efficiency and reducing carbon emissions.

Alti-ess has more than 8 years of experience in commercial frequency modulation operation in the United States. After installation, the system was tested at the end of the first year and the end of the second year. The battery performance was verified and the battery life was in line with the expectation of more than 25 years.

While other lithium battery technologies on the market may achieve the same charge/discharge ratios, they lack the long life cycles needed to provide economical solutions. Only otec achieves a 6C multiplier over the extended life cycle required by grid regulation.

Compared with the previous generation, the new generation of multi-advantage alti-ess energy storage system improves the energy by 2.5 times at a lower cost while maintaining the superior performance of other lithium titanates in the same standard 40-foot shipping container.

"Due to the high cost of energy storage, we need to find the application scenarios suitable for lithium titanate, some of the high power, safety and life requirements of some of the application scenarios, so that it can be reflected. "KEMA, an independent consulting company providing testing and validation services for the power grid and energy sector, demonstrated advanced lithium titanate battery energy storage systems with advanced technology, rapid response and over 90 percent round-trip efficiency," said lee.

Over the years, yinlong new energy has been committed to improving the energy density of lithium titanate batteries. By focusing on research and development and technical upgrading, the company's research and development of the fourth generation of high energy density yinlong titanium battery, compared with previous generations of products, life, capacity, maximum power, stability, internal resistance, etc., have been greatly improved.

Aiming at the problem of low energy density of short board, lee jiing said: "the domestic energy storage dozens mw project, we still haven't participate in, but the future will consider large-scale projects with high energy density of electrochemical energy storage do together, play lithium titanate high power on the front end fast response, energy storage support behind by high energy battery, now also in developing this solution. We are confident that the domestic and foreign markets will be fully expanded this year and next.

Adhering to innovation-driven development and constantly improving products and services, yinlong new energy will continue to work in the field of energy storage and make greater contributions to the development of China's new energy cause.

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