An Improved Wireless Battery Charging System

Article English OPEN
Woo-Seok Lee ; Jin-Hak Kim ; Shin-Young Cho ; Il-Oun Lee (2018)
  • Publisher: MDPI AG
  • Journal: Energies (issn: 1996-1073)
  • Related identifiers: doi: 10.3390/en11040791
  • Subject: T | wireless battery charging system | wireless power transfer | Technology | series-series compensated circuit
    acm: Hardware_GENERAL
    arxiv: Computer Science::Networking and Internet Architecture

This paper presents a direct wireless battery charging system. The output current of the series-series compensated wireless power transfer (SS-WPT) system is used as a current source, and the output voltage of AC-DC converter controls the current source. Therefore, the proposed wireless battery charging system needs no battery charging circuit to carry out charging profiles, and can solve space constraints and thermal problems in many battery applications. In addition, the proposed wireless battery charging system can implement easily most other charging profiles. In this paper, the proposed wireless battery charging system is implemented and the feasibility is verified experimentally according to constant-current constant-voltage charging profile or multi-step current charging profile.
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