Modern cars are to introduce the technique of solar panels, the new sonata can store more energy, in order to improve the trip mileage of the vehicle. But with Toyota, same old regenerative ball can also with the vehicle must be parked in the outdoor environment to recharge. Toyota has developed a solar panels, plan as a Toyota prius plug-in hybrid vehicles matching device, solar portal, systems engineering the device only when parking for the battery. After several companies such as Toyota and hyundai motor that has brought the solar panels business plan, namely installing solar panels on the roof, solar panels, but because of the low power systems engineering, solar equipment, main do this model did not work for a wide range of applications. Chinese polysilicon enterprises at present, solar panels, the existing solar panels on the market of the energy conversion efficiency is about 20%, can also with old regenerative ball by Toyota, sharp and related research institutions to develop solar panels, energy conversion efficiencies of over 34%, far higher than the average level of the ordinary products on the market at present. In sunny day, the vehicles parked in the open air environment, photovoltaic new applications can complete charging process. Because of the solar panel is only 0. 3 mm thickness, solar power network, so the panels can be placed on the roof, power stations work mainly do engine hatch cover, rear window and rear spoiler and car body parts surface, in order to maximize the exposure to the sun. It is reported, since July 2019, Toyota has been testing the solar panels, although it is not currently in the process of moving vehicles by charging, but Toyota still think this technology has very high use value.