Sealed battery
AssigneeSamsung SDI Co., Ltd.
InventorsWan-Seog Oh, Sang-Won Lee, Soo-Min Park, Eung-Kil Choi
Life of this patent
Estimating the term…
Abstract
A sealed battery includes a can for receiving an electric generator, a shape-variable plate crimped on an opening of the can, a gasket disposed between the can and the shape-variable plate, a fixing plate disposed under the shape-variable plate, an insulating member disposed between the shape-variable plate and the fixing plate, and a projection extending from the fixing plate and welded on the shape-variable plate. The projection is provided with a mechanically weak portion which is designed to be broken at an internal pressure lower than that for separating a welding portion of the projection and the shape-variable plate.
Claims10
A sealed battery comprising:
- a can for receiving an electrical generator;
- a shape-variable plate being deformed in a direction where an internal pressure is applied and crimped on an opening of the can;
- a gasket disposed between the can and the shape-variable plate;
- a fixing plate having at least one air flow hole, and disposed under the shape-variable plate wherein an inner diameter of the gasket is less than an outer diameter of the fixing plate;
- an insulating member disposed between the shape-variable plate and the fixing plate;
- and
- a projection comprising a connection portion and a weld contact portion, the connection portion extending from the fixing plate to the weld contact portion, the weld contact portion having a uniform thickness being welded to the shape-variable plate, the projection being provided with a mechanically weak portion which is designed to be broken at an internal pressure lower than that for separating a welding portion of the projection and the shape-variable plate, wherein the mechanically weak portion consists of the weld contact portion.
A sealed battery comprising:
- a can for receiving an electric generator;
- a shape-variable plate crimped on an opening of the can;
- a gasket disposed between the can and the shape-variable plate;
- a fixing plate disposed under the shape-variable plate wherein an inner diameter of the gasket is less than an outer diameter of the fixing plate;
- an insulating member disposed between the shape-variable plate and the fixing plate;
- a projection comprising a connection portion and a weld contact portion, the connection portion extending from the fixing plate to the weld contact portion, the weld contact portion having a uniform thickness being welded to the shape-variable plate, the projection being provided with a mechanically weak portion which is designed to be broken at an internal pressure lower than that for separating a welding portion of the projection and the shape-variable plate, wherein the mechanically weak portion consists of the weld contact portion;
- wherein the mechanically weak portion cuts off a flow of a current by breaking the fixing plate;
- and
- means for exhausting an internal gas by breaking the shape-variable plate.
Dependencies are inferred from the claim text.