Samsung Sdi Co., Inc.

Hongkeun Choi

Jiho Lee

Mincheol Bae

Kyounghwan Noh

Ikjae Jeong

Ik-Jae Jeong

A battery pack is disclosed. In one aspect, the battery pack includes a battery cell and an electrode terminal including a plate member electrically connected to the battery cell, and a bolt passing through the plate member. The bolt includes a plurality of catch jaws disposed on opposing sides of the plate member in a length direction of the bolt and a thread portion exposed from the plate member. The plate member and the bolt include different metallic materials.

Battery pack including electrode terminal having catch jaws

A secondary battery includes an electrode assembly, a case, a cap plate, and a terminal plate. The electrode assembly includes a separator between first and second plates. The case includes the electrode assembly and has an opening. The cap plate seals the opening of the case and has a hole. The terminal plate is on the cap plate and includes a discharge hole aligned with the hole in the cap plate. A short circuit area with a vent may be included in the hole of the cap plate.

Secondary battery

A battery module according to aspects of the present invention includes a plurality of battery cells each having a terminal, a reflective portion on the terminal, and a bus-bar coupled to the terminal to electrically connect the plurality of battery cells. The bus-bar may have an opening exposing at least a portion of the reflective portion. The reflective portion may be configured to reflect laser incident thereon through the opening. A method of manufacturing the battery module may include placing a bus-bar electrically connecting terminals of a plurality of battery cells, each of the terminals having a reflective portion on a top surface thereof, and the bus-bar having an opening exposing at least a portion of the reflective portion, and welding the bus-bar and the terminal to each other. The task of welding the bus bar may include irradiating a laser through the opening in the bus-bar.

Growing community of inventors

Yongin-si, South Korea

Hongkeun Choi