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정해원(Hae-Won Cheong),강승호(Sung-Ho Kang),김기열(Kiyoul Kim),조장현(Jang-Hyeon Cho),백승수(Seung-Su Baek) 한국추진공학회 2018 한국추진공학회 학술대회논문집 Vol.2018 No.5
열전지의 전해질은 용융염이 주성분이라서, 용융염 전지라고도 불린다. 용융염 전해질은 평소에는 전기가 흐르지 않는 고체이지만, 화약 열원에 의해 녹으면 탁월한 이온 전도체가 된다. 따라서 열전지는 일종의 `화약 전지`이다. 화약의 열에너지로 용융염 전해질을 녹여야만 비로소 작동하게 되기 때문이다. 열전지에 사용되는 파이로테크닉 부품은 착화기, 점화스트립, 열원이 있다. 이들 파이로테크닉 부품의 신뢰성은 열전지의 안전성은 물론 성능에도 큰 영향을 미친다. 본 논문에서 열전지가 요구하는 파이로테크닉 성능을 중심으로 부품 개발 연구결과를 정리하였다. Thermal batteries are also called molten-salt batteries as the main composition of electrolyte is molten salt. The molten-salt electrolyte is a solid that does not conduct electricity at room temperature, but when it is melted by the pyrotechnic heat source, it becomes an excellent ion conductor. Thermal battery is a kind of pyrotechnic battery because it operates only when the solid electrolyte is melted by the heat energy of pyrotechnic materials. Pyrotechnic components used in a thermal battery include heat sources, fuse strips, and an igniter. The reliability of these pyrotechnic components greatly affects the safety and performance of the battery. This paper summarizes the results of the research focusing on the pyrotechnic devices and their performance required by thermal batteries.
정해원(Hae-Won Cheong),강승호(Sung-Ho Kang),김기열(Kiyoul Kim),조장현(Jang-Hyeon Cho),류병태(Byungtae Ryu),백승수(Seung-Su Baek) 한국추진공학회 2019 한국추진공학회지 Vol.23 No.1
Thermal batteries are also called molten-salt batteries as the electrolyte is mainly composed of molten salt. The molten-salt electrolyte is a solid that does not conduct electricity at room temperature, but when it is melted by a pyrotechnic heat source, it becomes an excellent ionic conductor. Thermal batteries are a kind of pyrotechnic battery because they operate only when the solid electrolyte is melted by the heat energy provided by pyrotechnic materials. Pyrotechnic components used in a thermal battery include heat sources, fuse strips, and an igniter. The reliability of these pyrotechnic components critically affects the reliability and performance of the battery that must supply electricity stably to guided munitions even under extreme environmental conditions. Different igniter types offer different advantages: notch-type igniters offer improved ignition probability, whereas film-type igniters offer improved safety. The addition of metal oxides to the heat paper could improve the burn rate, and the ignition reliability could be greatly improved by using it with a flame igniter at the same time. Using a two-step reduction process, high-purity Fe particles in coral form can be safely obtained.