公开(公告)号：US07399322B2

公开(公告)日：2008-07-15

申请号：US10753633

申请日：2004-01-07

Applicant: Si-chul Yu

Inventor： Si-chul Yu

IPC: H01M10/04 ,  B05D5/00

CPC classification number: H01M10/0525 ,  H01M2/1653 ,  H01M10/0565 ,  H01M2300/0082 ,  H01M2300/0085 ,  Y10T29/4911 ,  Y10T29/49115

Abstract: The present invention relates to a method of making a polymeric porous separation membrane for a lithium ion polymer battery, the method comprising: providing a porous polyolefin membrane and a polymer solution of the concentration of 1–20 weight % in an organic solvent fabricated by dissolving in an organic solvent a polymer compound that is stable in an electrolyte containing a lithium salt and can be gelled in the electrolyte, at the temperature of 10–40° C.; and fabricating a polymeric porous separation membrane by coating the polymeric porous polyolefin membrane with the polymer solution. Thus, the porous separation membrane for a lithium ion polymer battery is fabricated by using the polymer solution fabricated at the low temperatures of 10–40° C., and the size of the pores of the coated is proper, so that the containing capacity of the electrolyte and the ion conductivity are good. Further gelling at low pressure is enabled and cohesive force to the electrodes is improved. In the lithium ion battery containing the porous separation membrane, the gelling is accomplished at atmospheric pressure or at low pressure for a few hours, so that problems caused by gelling for a short period at high pressure and high temperature such as the non uniform gelling of the battery, the deformation of the separation membrane and the weakened cohesion can be avoided. Moreover, the high-rate discharge, the cycle life becomes excellent.

Abstract translation: 本发明涉及一种制备用于锂离子聚合物电池的聚合物多孔分离膜的方法，该方法包括：在通过溶解制备的有机溶剂中提供浓度为1-20重量％的多孔聚烯烃膜和聚合物溶液 在有机溶剂中，在含有锂盐的电解质中稳定且可在电解质中凝胶化的聚合物化合物，温度为10-40℃; 以及通过用聚合物溶液涂覆聚合物多孔聚烯烃膜来制造聚合物多孔分离膜。 因此，通过使用在10-40℃的低温下制造的聚合物溶液制造用于锂离子聚合物电池的多孔分离膜，并且涂覆的孔的尺寸是适当的，使得 电解质和离子电导率都很好。 能够进一步在低压下凝胶化，并提高对电极的内聚力。 在含有多孔分离膜的锂离子电池中，胶凝在大气压或低压下进行数小时，因此在高压高温下凝胶化的问题，如非均匀胶凝 可以避免电池，分离膜的变形和弱化的内聚力。 此外，高倍率放电，循环寿命变得优异。

公开(公告)号：US20050005431A1

公开(公告)日：2005-01-13

申请号：US10753633

申请日：2004-01-07

Applicant: Young-sam Koo ,  Si-chul Yu ,  Jae-an Lee

Inventor： Young-sam Koo ,  Si-chul Yu ,  Jae-an Lee

IPC: B05D5/00 ,  H01M2/16 ,  H01M10/04 ,  H01M10/0525 ,  H01M10/0565 ,  H01M10/36

CPC classification number: H01M10/0525 ,  H01M2/1653 ,  H01M10/0565 ,  H01M2300/0082 ,  H01M2300/0085 ,  Y10T29/4911 ,  Y10T29/49115

Abstract: The present invention relates to a method of making a polymeric porous separation membrane for a lithium ion polymer battery, the method comprising: providing a porous polyolefin membrane and a polymer solution of the concentration of 1-20 weight % in an organic solvent fabricated by dissolving in an organic solvent a polymer compound that is stable in an electrolyte containing a lithium salt and can be gelled in the electrolyte, at the temperature of 10-40° C.; and fabricating a polymeric porous separation membrane by coating the polymeric porous polyolefin membrane with the polymer solution. Thus, the porous separation membrane for a lithium ion polymer battery is fabricated by using the polymer solution fabricated at the low temperatures of 10-40° C., and the size of the pores of the coated is proper, so that the containing capacity of the electrolyte and the ion conductivity are good. Further gelling at low pressure is enabled and cohesive force to the electrodes is improved. In the lithium ion battery containing the porous separation membrane, the gelling is accomplished at atmospheric pressure or at low pressure for a few hours, so that problems caused by gelling for a short period at high pressure and high temperature such as the non uniform gelling of the battery, the deformation of the separation membrane and the weakened cohesion can be avoided. Moreover, the high-rate discharge, the cycle life becomes excellent.

Abstract translation: 本发明涉及一种制备用于锂离子聚合物电池的聚合物多孔分离膜的方法，该方法包括：在通过溶解制备的有机溶剂中提供浓度为1-20重量％的多孔聚烯烃膜和聚合物溶液 在有机溶剂中，在含有锂盐的电解质中稳定且可在电解质中凝胶化的聚合物化合物，温度为10-40℃; 以及通过用聚合物溶液涂覆聚合物多孔聚烯烃膜来制造聚合物多孔分离膜。 因此，通过使用在10-40℃的低温下制造的聚合物溶液制造用于锂离子聚合物电池的多孔分离膜，并且涂覆的孔的尺寸是适当的，使得 电解质和离子电导率都很好。 能够进一步在低压下凝胶化，并提高对电极的内聚力。 在含有多孔分离膜的锂离子电池中，胶凝在大气压或低压下进行数小时，因此在高压高温下凝胶化的问题，如非均匀胶凝 可以避免电池，分离膜的变形和弱化的内聚力。 此外，高倍率放电，循环寿命变得优异。

公开(公告)号：US20090165290A1

公开(公告)日：2009-07-02

申请号：US12307950

申请日：2007-06-28

Applicant: Si-chul Yu ,  Jong yong Lee

Inventor： Si-chul Yu ,  Jong yong Lee

IPC: H01M2/02

CPC classification number: H01M2/0277 ,  H01M2/0275 ,  H01M2/0285 ,  H01M2/0287 ,  H01M2/06 ,  H01M2/08 ,  H01M10/0431 ,  H01M10/0587 ,  Y10T29/4911

Abstract: A method of manufacturing a cell using a pouch of aluminum multilayered film is disclosed. The pouch of an aluminum multilayered film is used as the outer case of the cell. The method includes: inserting an electrode assembly, which is composed of a negative electrode, separator, and positive electrode, in the pouch; sealing the electrode assembly; and bending the sealed portion of the cell once or twice. Therefore, the present invention can enhance the safety and energy density of the cell.

Abstract translation: 公开了使用铝多层膜的袋制造电池的方法。 使用铝多层膜的袋作为电池的外壳。 该方法包括：在袋中插入由负极，隔膜和正电极组成的电极组件; 密封电极组件; 并将电池的密封部分弯曲一次或两次。 因此，本发明可以提高电池的安全性和能量密度。