압출 각형 전지의 Vent 위치에 따른 파단 효율성에 관한 연구
Study on fracture efficiency according to Vent location of extrusion prismatic battery case
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초록
Safety vent plays an important role in the safety of the prismatic battery. The fracture pressure of the vent varies depending on the size, shape and location of the vent, and there is also a risk of chain explosion according to the vent fracture angle. This study investigated fracture efficiency of extruded prismatic battery focusing on the vent location. The experimental subjects were divided into 3 groups, one with vent in the center of the CAN, another with vent at the edge of the CAN and the other with vent on the cap assembly. The result shows that the farther the vent is from the source of pressure, the higher the fracture pressure, which may not be able to prevent explosion of the battery. The distance between the vent and the source of pressure in the battery is inversely proportional to venting open ratio. The vent in the center of the CAN has closest distance and it has a stable vent fracture pressure and smallest burst angle.
Abstract
Safety vent plays an important role in the safety of the prismatic battery. The fracture pressure of the vent varies depending on the size, shape and location of the vent, and there is also a risk of chain explosion according to the vent fracture angle. This study investigated fracture efficiency of extruded prismatic battery focusing on the vent location. The experimental subjects were divided into 3 groups, one with vent in the center of the CAN, another with vent at the edge of the CAN and the other with vent on the cap assembly. The result shows that the farther the vent is from the source of pressure, the higher the fracture pressure, which may not be able to prevent explosion of the battery. The distance between the vent and the source of pressure in the battery is inversely proportional to venting open ratio. The vent in the center of the CAN has closest distance and it has a stable vent fracture pressure and smallest burst angle.
참고문헌 (9)
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