Solar energy is so convenient, why don't new energy vehicles use solar energy?

At the beginning of this year, new energy vehicles were officially renamed as clean energy vehicles. At present, the energy of traditional electric vehicles is still highly polluting thermal power, which obviously runs counter to our original intention of pursuing clean travel.

At present, the sources of clean energy are solar energy, wind power, tides, hydropower, nuclear energy and biomass energy. Among them, hydropower, tidal energy and wind power are more restricted by geographical environment, the technical standard of nuclear energy is too high, and the conversion rate of biomass energy is not high, so solar energy is left as an artifact. As long as the sun rises as usual, there will be energy conversion. ...

Why don't pure electric vehicles install solar panels for self-charging? It is not impossible to use solar panels in new energy vehicles, but at this stage, this technology is still in the bottleneck period, and the energy conversion rate of solar cells will not be greatly broken in the short term.

According to the current statistics, the laboratory energy conversion rate of monocrystalline silicon can reach 25%, polycrystalline silicon 20%, and thin film 10%~ 15%. The module efficiency converted into actual scale production: single crystal 16%~ 18%, polycrystalline 15%~ 17%, and thin film 6%~8% (domestic).

? This energy conversion rate is pitiful for a new energy vehicle driven by pure electricity, and it can't meet the charging demand at all. PHEV plug-in hybrid or household electric charging is the most direct and effective means, which is still to ensure the maximum solar angle. If there is no sunlight on cloudy days, there is basically no energy conversion.

Some time ago, Toyota applied to the US Trademark and Patent Office to protect solar cell technology. This technology will be initially applied to the Prius (parameter | picture). As Toyota's first batch of hybrid electric vehicles (HEV hybrid vehicles), the Prius has achieved a high market response in the United States. This time, Toyota installed a solar cell system on the roof of the Prius to simply assist the battery charging.

This system will integrate the car networking system and benefit from the current advanced weather forecasting system. This system will give priority to navigation for vehicles on the ground with the highest solar altitude angle, or park vehicles in places with the sun to achieve the best energy conversion. The chief engineer of the Prius predicts that it will add about 65,438+00 kilometers of cruising time every day.