Patent Number: 7,611,797

Title: Lithium secondary battery with safety device

Abstract: A lithium secondary battery includes a can made of a conductive metal. The can houses an electrode unit having positive and negative electrode plates with a separator interposed therebetween with an electrolytic solution. An upper opening of the can is sealed by a cap assembly. A bottom plate is welded to an outer bottom surface of the can, and a lead plate having a first end welded to the outer bottom surface of the can and a second end connected to a safety device so that the can is electrically connected to the safety device.

Inventors: Kim; Chang-Seob (Cheonan, KR), Han; Su-Jin (Cheonan, KR), Gong; Min-Ho (Cheonan, KR), Kang; Jun-Won (Cheonan, KR), Maeng; Soo-Youn (Incheon, KR), Kim; Ju-Hyung (Cheonan, KR)

Assignee: Samsung SDI Co., Ltd.

International Classification: H01M 2/34 (20060101); H01M 10/48 (20060101); H01M 2/12 (20060101); B23K 20/10 (20060101)

Expiration Date: 1/03/02017