ANGULAR TYPE LITHIUM SECONDARY BATTERY

摘要

PURPOSE:To provide an angular form lithium secondary battery, which can be prevented from firing and rupture due to local internal shortcircuiting. CONSTITUTION:A plastic film 3a forming a positive electrode plate 3 is covered with a metal film. This metal film is patterned by etching to form segment electrodes 3b of independent patterns, a current collector part 3c, and a fuse part 3d to connect each segment electrode 3b with the current collector part 3c. Positive electrode active material 3e is laid over each segment electrode 3b. A plurality of such positive electrode plates 3 and negative electrode plates chiefly containing lithium are laminated alternately with separators interposed.