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논문 기본 정보

자료유형
학술대회자료
저자정보
Nguyen-Anh Nguyen (University of Ulsan) Phuong-Ha La (University of Ulsan) Sung-Jin Choi (University of Ulsan)
저널정보
전력전자학회 ICPE(ISPE)논문집 ICPE 2023-ECCE Asia
발행연도
2023.5
수록면
2,125 - 2,131 (7page)

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초록· 키워드

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The charging efficiency of lithium-ion batteries becomes significantly low in the cold environment since its impedance increases while its capacity reduces. To enhance the charging efficiency, the lithium-ion battery (LiB) pack must be pre-heated before every fast-charging process. The conventional methods utilize the external heater or the existing equalizer to heat the LiB pack based on the energy dissipation scheme, but the processing time is longer. This paper proposes a rapid internal pre-heating method to heat the LiB pack by using the pulsed-current (PC) driving scheme, which can be embedded into the existing charger. A thermal model of the heating process under the pulsed-current driving is introduced in order to re-enact the process. The performance of the proposed method is verified by various test scenarios on the Matlab/Simulink platform. The proposed method can increase the battery temperature from -20℃ to 0℃ after 30s and to 25℃ after 376s, respectively. The proposed method can be implemented directly by the existing system without any additional circuit.

목차

Abstract
I. INTRODUCTION
II. THERMAL MODEL OF LIB UNDER PULSED-CURRENT DRIVING PROCESS
III. PROPOSED PREHEATING STRATEGY
IV. VERIFICATION
V. CONCLUSIONS
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