公开(公告)号：US20150140412A1

公开(公告)日：2015-05-21

申请号：US14220003

申请日：2014-03-19

Applicant: DongGuan Amperex Technology Limited

Inventor： Songcai ZHONG ,  Mingliang MO ,  Hongwei YAN

IPC: H01M2/02

CPC classification number: H01M2/0257 ,  H01M2/026 ,  H01M2/0262 ,  H01M2/0287 ,  H01M2/1653 ,  H01M2/18 ,  H01M10/052 ,  H01M10/058 ,  H01M2002/0297

Abstract: A soft-packaged lithium-ion battery includes: a battery cell, a package used for accommodating the battery cell and an electrolyte filled into the package, wherein the bottom and/or top of the battery cell are/is provided with a porous material layer. Compared with conventional art, the disclosure can realize a buffer function between the battery cell and the package by providing a porous material layer at the bottom and/or top of the battery cell, thereby reducing impact of the battery cell on the package and improving the reliability of the battery cell packaging. In addition, since the porous material layer has an excellent absorbent property, thereby increasing the contact area between the electrolyte and the battery cell, and realizing rapid infiltration of electrolyte in the battery cell with high-energy density and big thickness (thickness ≧4 mm).

Abstract translation: 软包装的锂离子电池包括：电池单元，用于容纳电池单元的封装和填充到封装中的电解质，其中电池单元的底部和/或顶部设置有多孔材料层 。 与传统技术相比，本发明可以通过在电池单元的底部和/或顶部设置多孔材料层来实现电池单元与封装之间的缓冲功能，从而减少电池单元对封装的影响，并改善 电池单元封装的可靠性。 此外，由于多孔材料层具有优异的吸收性能，因此增加了电解质与电池单体之间的接触面积，并且实现了高能量密度和大厚度（厚度≥4mm）在电池单元中快速渗透电解质 ）。