What is the current status of domestic lithium battery energy storage industry?

As a new energy power, China's new energy industry has developed rapidly in recent years, and the energy storage field has been closely watched. Faced with huge market demand and potential, domestic energy storage companies such as sleeping lions are ready to go, this article from the market status quo of capacity, market distribution, technology and cost, and business model are discussed.

Energy storage market - total capacity is considerable, user side potential is huge

The new energy installed capacity will contribute 90% of the energy consumption increment. The power of the supporting energy storage device is calculated according to 15% of the wind power and photovoltaic installed capacity. By 2030, the demand for energy storage batteries is expected to reach 850 million kWh, in units of kilowatt hours. Energy system (lithium battery) 1,200 Yuan price calculation, China's scenery storage energy market space is expected to reach 1 trillion Yuan (RMB).

Opposite such a huge market share, domestic commercial giants can't help but start to move. At the beginning of January this year, at the China Manufacturing Summit Forum, Mingzhu Dong, Dalian Wanda Group, CIMC and other companies signed a capital increase with Zhuhai Yinlong New Energy Co., Ltd. Agreement, a total capital increase of 3 billion Yuan, to obtain a 22.388% stake in Zhuhai Yinlong.

In the current application field, the three major areas of energy storage include: large-scale wind energy storage, backup power supply for communication base stations, and household energy storage. Among them, the backup power supply field of communication base stations currently accounts for a large proportion. The household energy storage has a large space for further development and expansion through the "energy family" wave set up by Tesla. The large-scale scenery storage energy seems to have little momentum in the short term.

However, in the case of lithium electronics, lithium batteries are not suitable for every energy storage field. The chart below shows the application share of China's energy storage capacity in various fields from 2000 to 2016.

These markets have been used in the past due to the economic reasons of the energy storage system, but will explode rapidly in the near future:

According to reports, by 2030, the annual production capacity of electric vehicles will reach 20 million, and the utilization of power batteries will greatly reduce the cost of the energy storage industry. The rapid development of new energy vehicles will also promote the expansion of the energy storage industry on a large scale.

A number of policies promote the development of the industry at the same time - energy storage in the "Energy Technology Revolution Innovation Action Plan (2016-2030)", "National Innovation Driven Development Strategy Outline", "Made in China 2025 - Energy Equipment Implementation Plan" and many other policies Named in the middle, these policies portrayed the innovative development roadmap for energy storage technology, focusing on technical research, demonstration and demonstration, and the application of energy storage technology and equipment.

Steady development of the distributed photovoltaic industry - distributed photovoltaic is undoubtedly a stable and strong development of the energy storage industry. Clean energy and energy storage build an energy ecosystem and build a stable platform for each other. According to the statistics of the National Energy Administration, it will be 17 years. At the end of June, the national distributed PV installed capacity reached 17.43 million kilowatts.

Lithium battery energy storage - technology is nearing maturity and overall cost is reduced

Lithium-ion batteries are currently the most common energy storage technology on the market, and are widely used in a variety of personal electronic products, mobile devices and even car batteries for electric vehicles. Usually, the lithium battery we refer to refers to a lithium-ion battery, which is generally classified into a storage lithium battery and a power lithium battery according to the use. The energy storage lithium battery is used for photovoltaic or UPS, the internal resistance is relatively large, the charging and discharging speed is slow, generally 0.5-1C, the power battery is generally used in electric vehicles, the internal resistance is small, the charging and discharging speed is fast, generally can reach 3- 5C, the price is about 1.5 times more expensive than the energy storage battery.

Energy density, power density, safety performance, charging time, and high temperature and low temperature resistance are the five indicators for evaluating the performance of lithium batteries. At present, China has achieved preliminary standards in the last four points of lithium battery technology, but further improvement in energy density is required for progress. On March 1, 2017, the Ministry of Industry and Information Technology, the National Development and Reform Commission, the Ministry of Science and Technology and the Ministry of Finance jointly issued the Action Plan for Promoting the Development of Automotive power battery Industry. The Program requires major breakthroughs in key materials and components for power batteries. By 2020, key materials and components such as positive and negative electrodes, diaphragms and electrolytes will reach the international first-class level, and the upstream industrial chain will achieve balanced and coordinated development, forming an innovative backbone enterprise with core competitiveness. The program's specific energy requirements for batteries are bound to trigger a new wave of high-energy density materials.

At present, the hot lithium titanate material is also worthy of attention. It can replace graphite as a negative electrode material. Although the energy density is not high, lithium titanate allows the battery to achieve high rate charge and discharge, and has excellent safety performance and long cycle life. It is reported that the fourth-generation high-energy-density lithium titanate battery developed by Yinlong has reduced the cost by 40% and the energy density by 60% compared with the third generation. The industry is optimistic that the future lithium titanate battery may form a three-pronged situation with the ternary lithium battery and lithium iron phosphate battery.

Although the high cost of lithium-ion batteries is a serious challenge for the development of the industry, many companies have been working to improve the price/performance ratio of lithium-ion batteries. According to the analysis of the price of lithium batteries by Energy Trend analyst Duff (Lishun Lv), the price of lithium batteries has a slight increase in the first, second and third quarters of 17 years, but overall, in recent years, with the market for lithium batteries Demand continues to expand, and the mass production of lithium batteries is decreasing year by year. The current price is sufficient for commercial development and widespread use.

In addition, after the power lithium battery is attenuated to less than 80% of the initial capacity, it can be used in the energy storage field in a stepwise manner, further reducing the cost of the energy storage lithium battery.

The page contains the contents of the machine translation.