Sun Yat-Senuniversity

Bak Electronic (Shenzhen) Co., Ltd.

Fang Liu

Zhiguang Chen

Yutong Lu

Chuntai Guo

Nong Xiao

Liren Zhu

A metadata management method, system and medium are provided. All directories and files in a file system are organized in a tree structure, and all directories and subfiles under a single directory are saved as a whole on a continuous address space of an underlying storage device in the order of creation in sequence. When metadata is updated, update operations on all subdirectories/subfiles under a directory are appended to the tail of the directory in the form of log in order, so that each metadata operation triggers only one IO request. In the process of metadata retrieval, parsing a subdirectory under a parent director requires reading all data on the continuous address space corresponding to the parent directory, and then searching for a match by means of multiple acceleration methods.

Metadata management method, system and medium

A connection structure for connecting a tab of a cell with a cover board comprising a tab and a cover board is provided. An insulating spacer and an elastic conductive ring are provided at an end of the cell. The tab passes through an orifice of the insulting spacer and then is electrically connected with the elastic conductive ring which is electrically connected with the cover board. An elastic pressing disc may be further provided on the elastic conductive ring. The elastic conductive ring is electrically connected with the cover board via the elastic pressing disc. A staple may be further provided on the elastic pressing disc and the elastic conductive ring. The staple has a slot on one end for matching with an elastic hook provided on the insulating spacer.

Connection structure for connecting a tab of a battery cell with a cover board

Growing community of inventors

Guangdong, China

Fang Liu