| Title |
Development of a Card-Type Storage Battery System to Prevent Fire and Safety Accidents in Storage Batteries for Railway Signal Communication |
| Authors |
김영수(Young Soo Kim) ; 서기범(Ki Bum Suh) |
| DOI |
https://doi.org/10.5370/KIEE.2024.73.12.2427 |
| Keywords |
Thermal runaway; Lithium ion battery; Abnomalysign; Overcharge; Overheat; Pre-detection |
| Abstract |
Thermal runaway is the representative cause of lithium-based storage batteries currently operating in Korea's railway electricity sector, and a battery module pack with a battery cell surface temperature detection function suggested as an effective variable that can detect thermal runaway abnormalities of lithium batteries in advance and a card-type battery-type product that can prevent safety accidents caused by heavy object drop accidents were developed and compared. Existing products have a single mechanism that operates the protection circuit at 75°C by detecting only the temperature inside the battery module. This development was carried out in a two-stage temperature monitoring method of module pack and cell unit sensing. In addition, an alarm is generated when the temperature is 55°C so that users can recognize and safely respond to dangerous situations before a fire accident and before reaching 65°C, the recommended maximum temperature for safety standards. |