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US 8,263,253 B2Granted
Secondary battery
AssigneeSamsung SDI Co., Ltd.
InventorHwa Il Uh
Life of this patent
Estimating the term…
Abstract
A secondary battery including an electrode assembly; a can having an opening at an upper portion thereof and housing the electrode assembly; a cap assembly sealing the opening of the can; and an insulation case disposed between the electrode assembly and the cap assembly, the insulation case having an impact absorber configured to deform and absorb an external impact.
Claims14
A secondary battery, comprising:
- an electrode assembly;
- a can having an opening at an upper portion thereof and housing the electrode assembly;
- a cap assembly sealing the opening of the can;
- and
- an insulation case disposed between the electrode assembly and the cap assembly, the insulation case having a first area contacting the electrode assembly and a second area located on a periphery of the first area such that there is a gap between the second area and the electrode assembly,
- wherein:
- the cap assembly contacts the insulation case on the second area,
- the cap assembly includes a cap plate, the cap plate has short edges with lower portions, and protrusions at the lower portions of the short edges;
- the insulation case includes:
- a body having a plate-like shape defining a bottom of the insulation case and having short edges, long edges and a lower surface, and
- first side walls protruding upward from the short edges of the body, and
- the second area includes first tapered portions tapered from a lower surface of the body toward the short edges of the body.
9 more elements
A secondary battery, comprising:
- an electrode assembly;
- a can having an opening at an upper portion thereof and housing the electrode assembly;
- a cap assembly sealing the opening of the can;
- and
- an insulation case disposed between the electrode assembly and the cap assembly, the insulation case having a first area contacting the electrode assembly and a second area located on a periphery of the first area such that there is a gap between the second area and the electrode assembly,
- wherein:
- the cap assembly contacts the insulation case on the second area
- the insulation case includes:
- a body having a plate-like shape defining a bottom of the insulation case and having short edges and long edges;
- and
- first side walls protruding upward from the short edges of the body, and
- the second area has a convex portion protruding upward along a direction substantially parallel to the long edges of the body.
9 more elements
A secondary battery, comprising:
- an electrode assembly;
- a can having an opening at an upper portion thereof and housing the electrode assembly;
- a cap assembly sealing the opening of the can;
- and
- an insulation case disposed between the electrode assembly and the cap assembly, the insulation case having a first area contacting the electrode assembly and a second area located on a periphery of the first area such that there is a gap between the second area and the electrode assembly,
- wherein:
- the cap assembly contacts the insulation case on the second area
- the insulation case includes:
- a body having a plate-like shape defining a bottom of the insulation case and having short edges and long edges;
- and
- first side walls protruding upward from the short edges of the body, and
- the second area and the first area respectively have alternating convex portions and concave portions along the body.
9 more elements
Dependencies are inferred from the claim text.