Persbericht: NEDO, Sharp, and Toyota begin public road trials of electrified vehicles equipped with high-efficiency solar batteries



NEDO, Sharp Corporation (Sharp), and Toyota Motor Corporation (Toyota) announce today a plan to commence public road trials from late July 2019. The trials aim to assess the effectiveness of improvements in cruising range and fuel efficiency of electrified vehicles equipped with high-efficiency solar batteries.

To facilitate the execution of this trial, Sharp modularized its world-class, high-efficiency solar battery cells*1(conversion efficiency of 34 percent-plus*2), previously developed for a NEDO-led project*3, to create an onboard solar battery panel. Toyota installed this panel on the roof, hood, rear hatch door, and other parts of its “Prius PHV” and produced a demo car for public road trials. By enhancing the solar battery panel’s efficiency and expanding its onboard area, Toyota was able to achieve a rated power generation output of around 860 W*4, which is approximately 4.8-times higher in comparison with the commercial model Prius PHV (equipped with a solar charging system). In addition to substantially boosting its power generation output, the demo car employs a system that charges the driving battery while the vehicle is parked and also while it’s being driven, a development that is expected to lead to considerable improvements in electric-powered cruising range and fuel efficiency.

Toyota plans to conduct the trials under various driving conditions in Toyota City, Aichi Prefecture, Tokyo, and other areas. Various data, including the power generation output of the solar battery panel and the amount the drive battery is charged, will be obtained and verified, and then used in the development of an onboard solar recharging system. Toyota plans to share a selection of trial data results with NEDO and Sharp. The PV-powered Vehicle Strategy Committee*5(PV: photovoltaic), sponsored by NEDO and other entities will evaluate the benefits based on improvements in CO2emissions reductions and convenience, such as the number of times a vehicle >

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