Samsung Sdi Co., Inc.

Takao Abe

Dae-Kyu Kim

Byoung-Min Chun

Shin-Jung Kim

One aspect of the present invention provides a rechargeable battery that is capable of preventing a vent from being oxidized by preserving a plating layer of a surface of a vent. An exemplary embodiment of the present invention provides a rechargeable battery, including: an electrode assembly for performing charging and discharging operations; a case for accommodating the electrode assembly; and a cap assembly combined to an opening of the case and sealing the case. The case includes a vent at one side, and the vent has a plurality of ends in a thickness direction of the case and includes a plating layer on its surface.

Rechargeable battery with multi-layer vent

A rechargeable battery includes an electrode assembly including a positive electrode and a negative electrode, a case for accommodating the electrode assembly, a cap plate combined to the case, a vent plate disposed under the cap plate and formed with a notch, a middle plate disposed under the vent plate, and a heat-resistant insulating layer disposed between the vent plate and the middle plate.

Rechargeable battery having heat-resistant insulating layer

A rechargeable battery including an electrode assembly; a case accommodating the electrode assembly; and a cap assembly coupled with an opening of the case with a gasket between the cap assembly and the case, wherein the cap assembly includes a vent plate that is electrically connected to a cap plate; a middle plate that is separated from the vent plate, that includes a through-hole that is penetrated by a vent protruding from the vent plate, and that is electrically connected to the second electrode; an insulator interposed between the vent plate and the middle plate; and a sub-plate electrically connecting the vent with the middle plate, wherein at least one of the vent plate or the middle plate includes a protrusion and a groove facing the insulator, the protrusion being coupled with a complementary groove in the insulator and the groove being coupled with a complementary protrusion in the insulator.

Rechargeable battery

A rechargeable battery includes an electrode assembly including a positive electrode and a negative electrode, a case receiving the electrode assembly, a cap plate coupled to the case, a vent plate under the cap plate, the vent plate including a notch, a middle plate under the vent plate, and a laminating insulating layer between the vent plate and the middle plate, the laminating insulating layer being laminated to the vent plate or the middle plate.

Rechargeable battery having insulation layer

A secondary battery includes an electrode assembly having a first electrode plate, a second electrode plate and a separator interposed between the first and second electrode plates; a lower case accommodating the electrode assembly therein; and a cap assembly sealing the lower case. In the secondary battery, the lower case has the electrode assembly and a vent portion, and includes a surface facing the cap assembly. The vent portion includes an intersecting portion formed inside the surface, first and second curved portions curved to extend from the intersecting portion, and an extending portion extended in a straight line from the intersecting portion. The thickness of the intersecting portion includes the minimum thickness of the surface.

Growing community of inventors

Yongin-si, South Korea

Takao Abe