This paper presents an 2 kW commercial Li-ion(lithium-ion) battery model using PSIM simulation. An in-house designed transformer was employed to measure the leakage and magnetic inductance and determine the resonant frequency. The LLC resonant converter’s transfer function was derived using the FHA method, and voltage gain characteristics were analyzed concerning frequency, Q factor, and inductance variations. The CC-CV charge mode was evaluated at different C-rates, targeting the charging voltage for e-bikes. The results demonstrated that battery voltage increased with SOC until reaching the final charging voltage.

Abstract
1. 서 론
2. 본 론
    2.1 변압기 코어 크기 선정
    2.2 LLC 공진형 컨버터 모 델링
3. 시뮬레이션
4. 결 론
후 기
References

• 임성준(Dept. of Electrical Eng., Wonkwang University) | SeongJun Lim
• 정민창(CEPT Co., Ltd.) | MinChang Jeong
• 김재혁(Professor, Dept. of Electrical Engineering, Wonkwang University) | Jaehyuck Kim Corresponding author