| Title |
Design of Fuse Elements of Current Sensing Type Protection Device for Portable Secondary Battery Protection System |
| Authors |
강창룡(Chang-Yong Kang) ; 김은민(Eun-Min Kim) |
| DOI |
http://doi.org/10.5370/KIEE.2018.67.12.1619 |
| Keywords |
Current sensing fuse ; Low melting point alloy ; I-T curve ; Secondary battery ; V-T curve |
| Abstract |
Portable electronic devices secondary batteries can cause fire and explosion due to micro-current change in addition to the situation of short-circuit inrush current, safety can not be secured with a general operation limited current fuse. Therefore, in secondary battery, it is necessary for the protector to satisfy both the limit current type operation in the open-short-circuit inrush current and the current detection operation characteristic in the micro current change situation and for this operation, a fuse for the current detection type secondary battery protection circuit can be applied. The purpose of this study is to design a protection device that operates stably in the hazardous situation of small capacity secondary battery for portable electronic devices through the design of low melting fuse elements alloy of sensing type fuse and secures stability in abnormal current state. As a result of the experiment, I-T and V-T operation characteristics are satisfied in a the design of the alloy of the current sensing type self-contained low melting point fuse and the resistance of the heating resistor. It is confirmed that it can prevent accidents of short circuit over-current and micro current change of secondary battery. |