废旧锂离子电池回收预处理专利综述

Summarize of pretreatment patent for spent Li-ion battery recycling

对废旧锂离子电池回收预处理技术国内专利进行分析。选择预处理技术涉及的电池安全放电、拆解破碎、集流体与活性物质的分离、污染防治等关键词,并结合国际专利分类(IPC)号,以国家知识产权局专利数据库中1990-2020年的检索结果为样本,分析国内锂离子电池回收预处理技术的专利及变化情况,总结回收预处理技术现状与发展趋势。

The domestic patents for pretreatment technology of spent Li-ion battery recycling were analyzed.The key words related to the pretreatment technology were selected,such as battery safety discharge,battery disassembly and crushing,separation of collectors and active materials,pollution prevention,etc.Combined with international patent classification(IPC)numbers,taking the search results from 1990 to 2020 in the patent database of the China National Intellectual Property Administration as the sample,the patent layout and changes of domestic pretreatment technology of Li-ion battery recycling were analyzed,the current situation and future development trend of pretreatment technology of Li-ion battery recycling were summarized.