lithium ion powerwall.Lithium ion batteries: promising prospects for future energy storage applications

　　The storage energy density of lithium-ion batteries is relatively high, reaching 200-500Wh/L, and their weight is about 1/5-1/6 of that of batteries under the same volume. However, lithium-ion batteries have poor overcharging/discharging resistance, complex combination and protection circuits, high cost related to batteries, and the consistency and safety of individual batteries also need to be improved.

　　In 2016, lithium-ion batteries accounted for 50% of the new energy storage methods. By 2025, lithium-ion batteries are expected to continue to dominate, accounting for 80% of global power battery energy storage deployments.

　　Zhang Zifeng, Chief Engineer of BYD Electric Power Research Institute, stated that BYD will have more commercial lithium-ion energy storage and operation projects implemented from 2017 to 2018. BYD actively participates in the energy storage frequency modulation auxiliary service market, and its shipment volume for frequency modulation in the international market has exceeded 100MW.

　　Dong Mingzhu, along with multiple companies such as Wanda Group, JD.com, and CIMC Group, has invested in Yinlong. They are not only interested in car manufacturing, but also in lithium titanate energy storage batteries. In addition to being used in new energy vehicles, the larger application market for lithium-ion titanate batteries is the trillion level energy storage market. According to industry experts' analysis, unlike power lithium batteries, energy storage batteries place greater emphasis on the performance of batteries with long lifespan, low cost, and high safety, while lithium titanate energy storage batteries have obvious advantages in these aspects.

　　Li Changqing, General Manager of AVIC Lithium Battery Energy Storage Business Unit, stated that just like the hot electric vehicle market, the energy storage market will soon enter the market. In the strategic planning of AVIC Lithium Battery, the energy storage business and electric vehicle business are on par, and the company has made good reserves in terms of technology and production line layout.

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