| 摘要 |
PURPOSE:To effectively utilize a PTC device independent of battery life by installing the first package in which batteries are accommodated and the second package in which a PTC device is accommodated and which can be attached to and dettached from the first package. CONSTITUTION:Batteries 1, 2 are placed so that the polarities are reversed and accommodated in the first package 3 and terminals 1a, 1b, 2b, and 2a are installed. A PTC device 4 is accommodated in the second package 5 and terminals 4a, 4b are installed. The terminals 1b and 2a of the first package 3 are connected to the terminals 4a, 4b of the second package 5 respectively to form a packed battery system. Thereby, a power source circuit in which batteries 1, 2 are connected in series and the PTC device 4 is incorporated and terminals 1a, 2b are used as external terminals for appliance can be obtained. By separating the PTC device from the battery package, the waste of resource is prevented and cost is reduced. |
