珠海冠宇申请一种锂离子二次电池专利，能避免电池在发生机械滥用时正极集流体与负极片发生短路接触，使其具有优异的安全性能

Group 1 - The core viewpoint of the news is that Zhuhai Guanyu Battery Co., Ltd. has applied for a patent for a lithium-ion secondary battery, which aims to enhance safety and mechanical strength while improving energy density [1] - The patent application was filed on February 2024, and the patent number is CN120527588A [1] - The battery design includes a positive electrode sheet with a protective layer that prevents short-circuiting during mechanical abuse, thus improving safety performance [1] Group 2 - Zhuhai Guanyu Battery Co., Ltd. was established in 2007 and is located in Zhuhai City, primarily engaged in other manufacturing industries [2] - The company has a registered capital of approximately 1.12 billion RMB [2] - The company has invested in 10 enterprises, participated in 123 bidding projects, and holds 3,223 patent records [2]