Abstract:
A porous polymer membrane and a method for preparing the same are provided. The porous polymer membrane comprises a carbon material dispersed therein. The method comprises steps of: preparing a first polymer solution comprising a first polymer, a first carbon material, a first pore-forming agent and a first solvent; applying the first polymer solution to a polymeric substrate; and removing the first pore-forming agent and the first solvent from the first polymer solution so as to obtain a first polymeric layer on the polymeric substrate. A polymer composite electrolyte comprising the porous polymer membrane is provided. A battery comprising the polymer composite electrolyte and a method for preparing the same are also provided.
Abstract:
A rubber valve for a lithium ion battery may be provided. The rubber valve may comprise: an upper projecting portion (11); a columnar portion (12) having an end connected with the upper projecting portion (11); and a lower projecting portion (13) connected with the other end of the columnar portion (12). A gas venting groove (14) may be formed into a projecting surface of the lower projecting portion (13) dividing the projecting surface into at least two parts. A lithium ion battery comprising the same may also be provided.
Abstract:
An end cover assembly (100) for a lithium secondary battery is provided. The assembly (100) comprises: a sealing member (2) having an accommodating portion (21) therein for accommodating an upper cap (1), a thermal-sensitive member (7) disposed under the upper cap (1), and a metal bottom plate (6) disposed under the thermal sensitive member (7). A skirt portion (61) of the metal bottom plate (6) is flanged upwardly to wrap the thermal-sensitive member (7) and the upper cap (1) respectively with an insulating member (8) being disposed between the upper cap (1) and the metal bottom plate (6) for preventing the upper cap (1) from electrically contacting the metal bottom plate (6). Further, a lithium ion battery (200) having the end cover assembly (100) as described above is provided.
Abstract:
An end cover assembly (100) for a lithium secondary battery is provided. The assembly (100) comprises: a sealing member (2) having an accommodating portion (21) therein for accommodating an upper cap (1), a thermal-sensitive member (7) disposed under the upper cap (1), and a metal bottom plate (6) disposed under the thermal sensitive member (7). A skirt portion (61) of the metal bottom plate (6) is flanged upwardly to wrap the thermal-sensitive member (7) and the upper cap (1) respectively with an insulating member (8) being disposed between the upper cap (1) and the metal bottom plate (6) for preventing the upper cap (1) from electrically contacting the metal bottom plate (6). Further, a lithium ion battery (200) having the end cover assembly (100) as described above is provided.