Rechargeable battery
A rechargeable battery including a plurality of electrode assemblies; a case accommodating the plurality of electrode assemblies, the case having an opening; a cap assembly coupled to the opening to seal the case; one or more electrode terminals electrically connected to the electrode assemblies; and a lower insulating member coupled to the one or more electrode terminals and installed in the case, wherein the lower insulating member includes a first portion fixed to the electrode terminal, the first portion having a first width, and a second portion extending from one end of the first portion, the second portion having a second width, and a width-direction end of the second portion lies in a plane between an inner surface of the case and a center of a top surface of an outermost electrode assembly among the electrode assemblies, the top surface facing the second portion.
1 . A rechargeable battery, comprising:
a plurality of electrode assemblies;
a case accommodating the plurality of electrode assemblies, the case having an opening;
a cap assembly coupled to the opening to seal the case;
one or more electrode terminals electrically connected to the electrode assemblies; and
a lower insulating member coupled to the one or more electrode terminals and installed in the case, wherein:
the lower insulating member includes:
a first portion fixed to the electrode terminal, the first portion having a first width, and
a second portion extending from one end of the first portion, the second portion having a second width, and
a width-direction end of the second portion lies in a plane between an inner surface of the case and a center of a top surface of an outermost electrode assembly among the electrode assemblies, the top surface facing the second portion.
2 . The rechargeable battery as claimed in claim 1 , wherein the top surface of the electrode assembly facing the second portion of the lower insulating member includes a curved portion.
3 . The rechargeable battery as claimed in claim 1 , wherein the second width of the second portion is about equal to a width of the cap plate.
4 . The rechargeable battery as claimed in claim 1 , wherein the second width of the second portion is larger than the first width.
5 . The rechargeable battery as claimed in claim 1 , wherein the second portion includes an edge facing the electrode assembly, the edge including an inclined surface.
6 . The rechargeable battery as claimed in claim 5 , wherein: the inclined surface of the edge of the second portion is a rounded-inclined surface.
7 . The rechargeable battery as claimed in claim 5 , wherein the inclined surface of the edge of the second portion is a flat-inclined surface.
8 . The rechargeable battery as claimed in claim 1 , wherein the lower insulating member includes:
a first fixation protrusion on a surface of the first portion, the first fixation protrusion facing the cap assembly; and
a second fixation protrusion on a surface of the second portion, the second fixation protrusion facing the cap assembly.
9 . The rechargeable battery as claimed in claim 1 , further comprising a protection member covering a portion of an outside of the electrode assembly, the portion of the outside of the electrode assembly corresponding to the lower insulating member.
10 . The rechargeable battery as claimed in claim 9 , wherein the protection member is a tape covering the outside of the electrode assembly.
11 . The rechargeable battery as claimed in claim 1 , wherein the lower insulating member is made of an elastic material.
12 . The rechargeable battery as claimed in claim 1 , wherein the one or more electrode terminals is electrically connected to the electrode assemblies through an electrode current collecting member.
13 . The rechargeable battery as claimed in claim 12 , wherein the electrode current collecting member includes a terminal junction portion, the terminal junction portion being electrically connected to the one or more electrode terminals.
14 . The rechargeable battery as claimed in claim 13 , wherein the electrode current collecting member includes at least one tab branch, the at least one tab branch being electrically connected to at least one of the plurality of electrode assemblies and the terminal junction portion.