SEALED RECTANGULAR BATTERY AND BATTERY MODULE USING SAME

摘要

Provided is a sealed rectangular battery with excellent volumetric efficiency and pressure resistance with a simple structure. In a sealed rectangular battery (C) equipped with an electrode assembly (15) that comprises a positive electrode (12) and a negative electrode (13), a rectangular frame member (17) that forms a cell case (22) for housing the aforementioned electrode assembly (15) and an electrolyte, a first cover part (19), and a second cover part (21), the aforementioned first cover part (19) has a main body part (19a) that covers one of the openings (17a) in the aforementioned frame member (17), and a side part (19b) provided extending from the main body part (19a) to roughly follow at least one set of mutually opposing sides (17b) of the aforementioned rectangular frame member (17). The aforementioned second cover part (21) has a main body part that covers the other opening (17c) in the aforementioned frame member (17) and a side part (21b) provided extending from the main body part to roughly follow at least one set of mutually opposing sides (17b) of the aforementioned rectangular frame member (17).