Electrode assembly with centrally wound separator member
AssigneeSamsung SDI Co., Ltd.
InventorsChangbum Ahn, Jeongsoon Shin, Youngbae Sohn
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Abstract
An electrode assembly for a secondary battery and a method of manufacturing the same are disclosed. An electrode assembly comprises: a plurality of separator members formed by winding a central separator member, wherein the central separator member is a predeterminated portion of the separator; and a plurality of electrode members positioned between each of the separator members; wherein the separator including the plurality of separator members and the central separator member is one of the plurality of separator members, and wherein both opposite ends of the central separator member is curved in opposite directions, respectively.
Claims13
An electrode assembly comprising;
- a plurality of separator members formed by winding a separator on the basis of a central separator member, wherein the central separator member is a predeterminated portion of the separator;
- and
- a plurality of electrode members positioned between each of the separator members wherein the plurality of electrode members are attached to opposing sides of the separator member;
- wherein the separator including the plurality of separator members and the central separator member is one of the plurality of separator members and wherein the plurality of electrode members comprise a first and second electrode member having inner and outer surfaces wherein the inner surfaces of the first and second electrode members are attached to the central separator member, and
- wherein both opposite ends of the central separator member are curved in opposite directions, respectively,
- wherein the plurality of electrodes members comprises an electrode collector, respectively,
- wherein each of the electrode collectors is physically divided from each other on the winding separator so that no electrode member is attached to two portions of the winding separator immediately adjacent both sides of the central separator member and wherein the portions of the winding separator having no electrode member attached thereto cover the outer surface of the first and second electrode members.
A method of forming an electrode assembly comprising:
- forming a plurality of electrode members aligned in a first direction on a separator;
- forming a plurality of first and second electrode members on both surfaces of a separator, respectively by attaching the first and second electrode members to both of the surfaces of a central separator member of the separator;
- and
- winding the separator from the central separator member to form a plurality of separator members interposed between the electrode members wherein the plurality of electrode members comprise a first and second electrode member having inner and outer surfaces wherein the inner surfaces of the first and second electrode members are separated by the central separator member;
- wherein the central separator is a predeterminated portion of the separator;
- and
- wherein winding causes both opposite ends of the central separator member to be is curved in opposite directions, respectively,
- wherein the plurality of electrode members comprises an electrode collector, respectively,
- wherein each of the electrode collectors are physically divided from each other on the winding separator so that no electrode member is attached to two a portions of the winding separator immediately adjacent both sides of the central separator member and wherein the two portions of the winding separator having no electrode member attached thereto cover the outer surface of the first and second electrode members.
Dependencies are inferred from the claim text.