SPIRAL TYPE BATTERY

摘要

PURPOSE:To provide a spiral type battery having excellent heat radiation. CONSTITUTION:A heat radiation bar 9 having good heat conductivity is penetrated into a core opening which is mounted through in axial direction at the center of an electrode assembly 5 formed spirally, and abuts at one end thereof on a bottom face of a can body 1 directly or intervening a thin electrical insulating layer, so that heat from central part of the electrode assembly 5 is conducted to the metallic can body 1 through the heat radiation bar 9 and is radiated from the can body 1. And then temperature at the central part of the electrode assembly 5 of a spiral type battery is lowered accompanied by improvement of charge and discharge efficiency of a battery.