CIRCUIT BOARD OF PROTECTIVE CIRCUIT FOR STORAGE BATTERY, PROTECTIVE CIRCUIT FOR STORAGE BATTERY, AND STORAGE BATTERY PACK

摘要

A protective circuit device (3) prevents overcharge to a storage battery (2). The protective circuit device (3) comprises a circuit board body (32) having predetermined circuit patterns, and islands (33, 34) including a plurality of external terminals (30) on the surface and connected with the circuit board body (32) through metal pieces (35, 36). The islands (33, 34) preferably comprised first and second islands. The first island (33) preferably comprises external terminals (30) and is parallel to the circuit board body (32). The second island (34) is preferably arranged between the first island (33) and the circuit board body (32) and is vertical to the circuit board body (32).