リチウムイオン電池 (LIB) 急速充電技術の開発動向
Lithium Ion Battery Quick Charge Technology Development Trend
|出版日||ページ情報||英文 180 Pages
|リチウムイオン電池 (LIB) 急速充電技術の開発動向 Lithium Ion Battery Quick Charge Technology Development Trend|
|出版日: 2018年03月31日||ページ情報: 英文 180 Pages||
当レポートでは、リチウムイオン電池 (LIB) 急速充電技術について調査分析し、コンセプト、関連技術の問題、動向 (国別、メーカー別) 、応用例 (主要メーカー別) 、特許分析など、体系的な情報を提供しています。
As IT mobile devices become ubiquitous, consumer demand for a longer use continues to rise. Currently, lithium-ion secondary batteries are widely used in various mobile IT devices and electric vehicles, and fast charging technology for lithium-ion batteries is essential to meet the ever-increasing consumer demand.
Increasing power consumption and capacity of electronic devices have stimulated the development of fast charging technologies, mostly for smartphones. In general, charging speed can be improved by using a higher voltage and current during charging, and output is controlled to an appropriate level based on the general usage of electronic devices and batteries. Recently, technologies allowing device-charger communication during charging have made great advances and improved charging speed.
The charging method of electric vehicles can use three types: direct charging in which energy is supplied through a plug, replacement type in which a battery is periodically replaced, and non-contact charging in which batteries are charged by transmitting energy through electromagnetic induction. The most common direct charging methods can be further divided into slow and fast charging. Fast charging uses direct current and features a faster charging speed than slow charging. The current charging technology of the electric vehicle battery industry is capable of charging up to 80% of battery capacity within 20 to 30 minutes. Fast charging can completely charge most batteries in 6 hours. It is faster than slow charging method, but still significantly longer than the time required to fill up the gas tanks of conventional internal combustion engine vehicles.
The current fast charging technologies for lithium-ion secondary batteries suffer from energy density loss, limiting their industrial applications. To realize commercially viable fast charging technology, new approaches for design and development of novel and innovative battery materials, based on a fundamental understanding of the electrochemical reaction mechanisms governing the charging process. During fast charging, lithium ions need to be rapidly extracted in the cathode oxide crystal structure and required performance parameters for anode materials include a low discharge potential, high unit weight, and specific capacity per unit volume. Besides graphite anodes, which are widely used in small-sized lithium-ion batteries, next-generation anode materials need to be developed to ensure a high capacity, safety, and durability of batteries.
In this report, we will overview the most recent status of fast charging technologies, battery materials, and cell technologies, and provide trends and outlooks of fast charging technologies for IT devices and electric vehicles by country and manufacturer.
The strong points of this report include,
Also, this report presents information essential to keep up with the rapidly evolving fast charging technologies.