Protective circuit module and secondary battery including the same

摘要

A protective circuit module and a secondary battery including the same. The secondary battery includes: an electrode assembly, a can to house the electrode assembly, and a cap assembly to seal an opening of the can. The protective circuit module includes: a first module electrically connected to the cap assembly; a second module electrically connected to a closed end of the can; and a third module electrically connecting the first module and the second module. The first module includes a mounting portion that is disposed in a groove between the can and the cap assembly.

主权项

1. A secondary battery comprising:
a bare cell comprising first and second electrode terminals; and a protective circuit module comprising:
a disk-shaped first module electrically connected to the first electrode terminal;a disk-shaped second module electrically connected to the second electrode terminal; anda third module electrically connected to the first module and the second module,wherein the first module comprises:a first board comprising an inner surface facing the bare cell and an outer surface facing away from the bare cell, wherein the inner surface and the outer surface comprise opposing major surfaces of the first board;a first plate disposed on the inner surface at a central area of the first board, wherein the inner surface faces the first electrode terminal; anda mounting portion comprising a housing structure that is disposed on the inner surface at a peripheral area of the first board, the housing structure defining a space for enclosing circuitry of the protective circuit module therein, wherein the mounting portion is spaced apart from and around the first plate,wherein the mounting portion is disposed inside a groove formed between the first electrode terminal and a can of the bare cell, and wherein the mounting portion is spaced apart from the bare cell.