公开(公告)号：US20200099098A1

公开(公告)日：2020-03-26

申请号：US16211853

申请日：2018-12-06

申请人： NINGDE AMPEREX TECHNOLOGY LIMITED

发明人： Kefei WANG ,  Qiao ZENG ,  Liangzhen XIAO ,  Fei WU

IPC分类号： H01M10/0566 ,  H01M10/0525

摘要： The present application relates to an electrolyte and an electrochemical device comprising the electrolyte. The electrolyte comprises a dinitrile compound, a trinitrile compound, and propyl propionate, wherein, based on the total weight of the electrolyte, the content X of the nitrile compound and the content Y of the trinitrile compound meet the conditions represented by Formula (1) and Formula (2): {about 2 wt %≤(X+Y)≤about 11 wt % . . . (1), about 0.1≤(X/Y)≤about 8 . . . (2)}. The electrolyte of the present application is capable of effectively inhibiting the increase in DC internal resistance of an electrochemical device so that the electrochemical device has excellent cycle and storage performance.

公开(公告)号：US20180083319A1

公开(公告)日：2018-03-22

申请号：US15649820

申请日：2017-07-14

申请人： NINGDE AMPEREX TECHNOLOGY LIMITED

发明人： Liangzhen XIAO ,  Qiao ZENG ,  Kefei WANG

IPC分类号： H01M10/0587 ,  H01M10/28 ,  H01M10/0525 ,  H01M10/04 ,  H01M10/14 ,  H01M10/12

CPC分类号： H01M10/0587 ,  H01M10/0431 ,  H01M10/0459 ,  H01M10/0525 ,  H01M10/125 ,  H01M10/14 ,  H01M10/286

摘要： Provided is a wound cell, formed by winding of a first and second separator, a first and second electrode plate from start ends thereof, outermost circle of second electrode plate includes second single-side coated area, surface of which facing center of the wound cell is second blank current collector area not coated with second active material, portion of first electrode plate opposite to second blank current collector area includes first single-side coated area, surface of which away from the center of the wound cell is first blank current collector area not coated with first active material; tail end of first electrode plate contains first blank foil area, portion of second electrode plate opposite to first blank foil area contains second blank foil area; start ends of first and second single-side coated area are located at two opposite sides in thickness direction of the cell.