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The battery industry is currently growing by using lithium-ion batteries, which are used in various wireless machines and equipment due to their excellent storage capacity and energy efficiency. These outstanding performance features have expanded the range of battery applications beyond essential devices in modern society, such as automobiles, mobility devices, and smart gadgets, to diverse devices that were previously far from battery technology. As a result, we have entered the era of the BoT(Battery of Things), in which everything is connected and moves with the help of batteries.
The aviation and space industries are also following the trends of modern technology. In aviation, research on battery-powered personal air vehicles (PAVs), unmanned aerial vehicles (UAVs), and drones is actively being conducted, departing from conventional fossil fuel-powered aircraft. Additionally, research on new systems that utilize batteries, such as an electric pump system that supplies rocket propulsion systems with battery power, is being actively investigated.
However, batteries used in space are exposed to harsh environmental factors, such as heat, vacuum, vibration, and radiation. These conditions can significantly degrade the performance and stability of batteries, making thorough ground testing essential to ensure their safe operation in space environments. Therefore, It is crucial to secure the performance and stability of batteries through precise testing so that they can be operated safely in space.
To validate the performance and stability of batteries in vacuum and high discharge-rate environments, CNU High speed Propulsion Combustion Laboratory(HPCL) has improved the current vacuum chamber facility and constructed additional testing equipment. The HPCL has installed charging and discharging devices, as well as battery temperature measurement devices, and applied a pressure control valve and control system to adjust the pressure change due to altitude. Through this equipment construction, the HPCL has enabled the more precise validation of the performance and stability of batteries in space environments, ensuring safe battery operation.
References
[1] Kim G. Y., Lee H. J., Kim J. and Huh H.: Static Flow Characteristics of an Electric Pump-fed Cycle Space Propulsion System Using Valve and Pump RPM Control, Transactions of the Korean Society of Mechanical Engineers B, Vol. 46, No. 9(2022), pp. 515~527
[2] Kim H., Sin G., Yoon D. and Huh H.: Improvement plan of Vacuum Chamber for High Altitude Space Thermal Environment Test, Conference of The Korean Society for Aeronautical and Space Sciences, (2009), pp. 627-630.
[3] Kim H. and Huh H.: Study of Knudsen Pump using Vacuum Chamber and It's Upgrade Plan to Thermal Vacuum Chamber, The Korean Society for Propulsion Engineers, (2009), pp. 361-364.
| Keywords | Environment Test, Vacuum Chamber, Battery Test, Electric Pump-fed Cycle |
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