difficult for new battery to replace lithium-Lithium - Ion Battery Equipment

It is difficult for new battery to replace lithium battery in the short term -Lithium - Ion Battery Equipment

Testing, scoring and verification are terms and conditions that project developers and investors like. After all, the adoption of these measures can reduce investment risks and increase trust in new technologies, regardless of the industry. In view of this, DNVGL, a global quality assurance and risk management consultancy, recently released the third generation battery performance scorecard.

In DNVGL's evaluation this year, 22 battery manufacturers provided DNVGL battery scorecards with battery products for testing. The company said that even if no battery manufacturer is willing to disclose its name, DNVGL will continue to cooperate with its technical partners to improve transparency, which is still an ongoing process.

Industry analysts said that, based on the technology and market development trend in recent years, lithium iron phosphate (LFP) battery was once again welcomed by users, including batteries used for fixed energy storage systems. This battery once dominated the market from 2012 to 2015, but was replaced by nickel manganese cobalt (NMC) ternary lithium battery and nickel cobalt aluminum (NCA) ternary lithium battery after 2016. However, at present, Ningde Times and BYD and other Chinese battery manufacturers see the potential and trend of this battery development to promote the development and production of lithium iron phosphate (LFP) battery technology.(Lithium - Ion Battery Equipment)

The third annual battery scorecard released by DNVGL tested the charge discharge and temperature dependent behavior of 22 types of batteries with different chemical properties, and identified important product trends.

More and more battery capacity

Another obvious trend is that the battery capacity of the energy storage system is getting larger and larger, and the current lithium iron phosphate battery capacity is about 200Ah. The reason is that the battery unit with large capacity can save the cost of raw materials.

It is expected that there will be further innovations in the selection of electrode materials, battery structure and system architecture, while major innovations in battery technology will not occur in the next few years. DNVGL believes that lithium-ion batteries still maintain their preferred position in the field of energy storage. The company said that it is expected that other battery technologies will not replace lithium-ion batteries in the next three to seven years, because lithium-ion batteries will benefit from economies of scale in the application of transportation, consumer electronics and energy storage applications.

According to the research of DNVGL, the cost of lithium-ion battery is about US $100/kWh at present. Analysts of the company predict that the price of battery energy storage system will drop significantly in the next decade.

Deploy more solar energy+energy storage projects

Another trend observed by analysts is that more and more energy storage systems are co located with solar power facilities or wind power facilities. Therefore, energy storage project developers and users require that the battery life of their battery energy storage system be 20 to 25 years to match the working life of solar cell power generation facilities. The developers deploying grid scale battery storage systems have responded to this demand, and the deployment contract of battery storage systems includes comprehensive overhaul, enhancement, operation and maintenance services.

DNVGL said that the use of batteries will also change. In the early application of the energy storage system, the commercial service project is mainly the user side energy storage system. Nowadays, more and more battery energy storage systems need to transfer the solar power generation from the daytime to the peak power demand period at night. This puts forward different requirements for battery technology, including charge discharge stability and battery degradation under different charging conditions.

DNVGL tested the charge and discharge stability of 22 products of the scorecard, and determined the number of charges and discharges required to cause a capacity loss of 1%. In this year's scorecard, the average number of charge and discharge times required to cause 1% capacity loss is 381, and these different batteries are very different in this respect: 135-448 times for lithium iron phosphate batteries, 180-849 times for NMC ternary lithium ion batteries, 143-330 times for NCA batteries, and 1067 times for titanate batteries with the best performance.



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