SECONDARY BATTERY AND BATTERY MODULE INCLUDING THE SAME
A secondary battery includes an electrode assembly having a first electrode plate, a second electrode plate, and a separator located between the first and second electrode plates, wherein the first electrode plate and the second electrode plate each have a coated portion and a non-coated portion; a case housing the electrode assembly; a first current collector and a second current collector electrically coupled to the electrode assembly; and a retainer coupled to the electrode assembly and to the first current collector to fix the first current collector to the electrode assembly.
1 . A secondary battery comprising:
an electrode assembly comprising a first electrode plate, a second electrode plate, and a separator located between the first and second electrode plates, wherein the first electrode plate and the second electrode plate each have a coated portion and a non-coated portion;
a case housing the electrode assembly;
a first current collector and a second current collector electrically coupled to the electrode assembly; and
a retainer coupled to the electrode assembly and to the first current collector to fix the first current collector to the electrode assembly.
2 . The secondary battery of claim 1 , wherein the retainer is a clip.
3 . The secondary battery of claim 1 , wherein the retainer comprises a backing and two ribs extending from the backing to define an accommodation portion configured to receive a portion of the electrode assembly.
4 . The secondary battery of claim 3 , wherein the two ribs have different thicknesses.
5 . The secondary battery of claim 1 , wherein the retainer comprises an electrically insulating material.
6 . The secondary battery of claim 1 , wherein the retainer comprises an elastic material.
7 . The secondary battery of claim 1 , wherein the retainer biases the first current collector toward the electrode assembly.
8 . The secondary battery of claim 7 , wherein the retainer biases the first current collector in a thickness direction of the electrode assembly.
9 . The secondary battery of claim 1 , wherein the retainer is coupled to the electrode assembly by an interference fit.
10 . The secondary battery of claim 1 , wherein the retainer has an opening 180 ″.
11 . The secondary battery of claim 1 , wherein the retainer interacts between the case and the electrode assembly.
12 . The secondary battery of claim 1 , wherein the retainer contacts the case.
13 . The secondary battery of claim 12 , wherein the retainer is fixed to the case.
14 . The secondary battery of claim 1 , further comprising a second retainer coupled to the electrode assembly and to the second current collector.
15 . The secondary battery of claim 1 , wherein the first current collector is electrically coupled to the first electrode non-coated portion and the second current collector is electrically coupled to the second electrode non-coated portion.
16 . The secondary battery of claim 1 , wherein the retainer is fixed to the first electrode non-coated portion.
17 . The secondary battery of claim 16 , wherein the retainer is also fixed to the first electrode coated portion.
18 . A battery module comprising:
a plurality of secondary batteries, each of the secondary batteries comprising:
an electrode assembly comprising a first electrode plate, a second electrode plate, and a separator located between the first electrode plate and the second electrode plate, wherein the first electrode plate and the second electrode plate each have a coated portion and a non-coated portion;
a case housing the electrode assembly;
a first current collector and a second current collector electrically coupled to the electrode assembly; and
a retainer coupled to the electrode assembly and to the first current collector to fix the first current collector to the electrode assembly.