ELECTRIC, hybrid and fuel cell vehicles have attracted significant attention in the past decades due to the exhaustion of fossil fuel consumption and their environmental concerns. Electric vehicles use electronic subsystems—in comparison to conventional vehicles, which include electric machines, power electronics, electronic continuously variable transmissions (CVT), onboard chargers, and embedded powertrain controllers. Advanced energy storage systems, such as Li-ion batteries, ultra-capacitors, and fuel cells, together with intelligent energy management algorithms, are introduced in the next generation powertrains. In addition to these electrification components or subsystems, conventional internal combustion engines (ICE), mechanical and hydraulic systems may still present. As a result, the complexity of new powertrain designs and dependence on embedded software is a cause of concern to automotive research and development efforts. This leads to an increasing difficulty in predicting interactions among various vehicle components and systems. Therefore, the design and implementation of the mechanical and electrical components need to be considered carefully. In order to understand the difficulty and prospected challenge of the vehicle electrification, this Special Issue is a review of the state-of-art contributions and new discoveries in the field of power electronics and applications for the electric vehicle. The Special Issue on Vehicle Electrification collected 4 papers on diverse topics, ranging from the overview to the new contributions on the power electronics for vehicle electrification. The first paper entitled “Parameter Identification of Capacitive Power Transfer System Based on Spectrum Analysis” as written by Chen Chen and his colleagues at the Institute of Electrical Engineering, Chinese Academy of Science (China). The multi-parameter identification method based on spectral information which using the rational fractional fitting algorithm and network synthesis theory is proposed in this paper. Some known-parameters are added to this method, the noise tolerance of the identification result is highly improved, resulting in z better accuracy. The experiment of the double-sided LC matched CPT system model with the vector network analyzer to collect the spectrum information of the circuit shows good results in effectively identifying the unknown parameters in the system model and achieving high accuracy. The second paper on the “Adaptive DC-Link Voltage Control of LLC Resonant Converter” was proposed by Li-Chung Shih, Yi-Hua Liu and Yi-Feng Luo from National Taiwan University of Science and Technology, Taiwan. In this control technique, the DC-link voltage increases to compensate the voltage drop caused by load variation, which facilities the LLC resonant converter operates near the resonant frequency. Therefore, the frequency variation range can be reduced, and the efficiency is improved. The third paper contributed by Tuopu Na and his colleagues from Harbin Institute of Technology (China) is the “Active Power Filter for Single-Phase Quasi-Z-Source Integrated On-Board Charger”. The paper proposes an active power filter (APF) quasi-z-source single phase integrated on-board charger for EV application which can eliminate the second harmonic power on the DC-link. Compared with the conventional quasi-z-source network, this proposed topology only need a small capacitance and inductance, results in space and weight savings. This paper also discussed the design of the APF, and the experimental prototype was built to verify this design. The last paper is the “Adaptive Charging Strategy with Temperature Rise Mitigation and Cycle Life Extension for Li-ion Batteries” from Shun-Chung Wang and his colleagues from Lunghwa University of Science and Technology, Taiwan. The digitally controlled Li-ion battery charger with an adaptive charging strategy has been employed in this paper. The devised charger can generate the desired charging profile depending on the battery SOC state and temperature variation. Accordingly, the proposed strategy remains the capacity charging with fuzzy temperature control approach that can avoid using the high C-rate current to charge the battery with high RSOC; thus, the phenomenon of the battery aging aggravation due to the extreme electrochemical stress can be subdued. The control strategy is implemented in the power stage of synchronous rectified buck converter for further conduction loss reduction. The GUI is also employed by a low-cost microcontroller and LabVIEW software. The experimental results show the significant improvement of the average temperature-rise, charging efficiency, estimated cycle life compared with the conventional CC-CV control strategy. We would like to express our big appreciation to the industriousness and carefulness of the guest associate editors for this Special Issue in the selection of these high-quality papers from numerous submitted manuscripts in consideration for publication. We would like to appreciate the tremendous efforts of the expert reviewers who have provided invaluable, in-depth comments and suggestions to improve papers into the highest quality. We also would like to thank all the authors who have a great passion to achieve the best goal of their research for this Special Issue publication.