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Current efforts and status of recycling technology development of electric vehicle battery in China
( Xiao Lin ),( Gangfeng Liu ),( Xue Wang ) 한국폐기물자원순환학회 2022 ISSE 초록집 Vol.2022 No.-
With the proposed goal of Carbon Neutrality, electric vehicles and other new energy industries are developing rapidly, the demand for lithium-ion batteries is increasing, which will certainly lead to a wave of scrapping in the future. On the one hand, the spent lithium-ion battery is flammable and explosive, and the organic toxic components contained requires harmless treatment; On the other hand, spent lithium-ion batteries have the property of resources e.g., Nickel, Cobalt, Manganese, Lithium and other valuable components. Therefore, the recycling of spent lithium-ion batteries can not only protect the environment, but also alleviate the global strategic metal resource tension and promote the healthy and sustainable development of new energy industry, which has become a hot topic in the global research. This article provides an overview of the lithium-ion battery recycling market, especially in China. Then we will share our research on the whole process recovery of lithium batteries, including the pre-treatment of spent Lithium-ion to obtain black powder that meets the requirements of the subsequent process, then the traditional hydrometallurgical recycling process for valuable metals in the black powder and ultra-short process developed by Botree Cycling will be introduced and compared. At last, the latest study on the life-cycle carbon footprint assessment for Lithium-ion batteries including the end-of-life stage will be mentioned.
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Gravity balance mechanism for a spatial robotic manipulator
Yanyan Chen,Yubin Liu,Changle Li,Gangfeng Liu,Yanhe Zhu,Jie Zhao,Hegao Cai 대한기계학회 2016 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.30 No.2
A gravity balance mechanism for spatial robotic manipulator is proposed. In this design, a parallelogram linkage mechanism, pulleys and springs are utilized to accomplish the balance. As a passive structure, it needs no motors or actuators, and safety is another great highlight of the mechanism. The balance mechanism can solve the balance problem of both planar 2-link mechanism and spatial 2-link mechanism (a roll-pitch-yaw-roll 2-link mechanism) by adding a rotational degree of freedom. This is a more simple and effective method to solve the balance problem of spatial linkage system, especially the linkage system of multi-degree of freedom joint. And the mechanism can be extended to solve a multilink balance problem.
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