How to charge electric vehicles with solar panels

A professional manufacturer of solar panels and dual range solar devices for electric vehicles will give you the answer: three 20W12V solar panels are connected in series with 60W36V. The actual voltage can reach 48-60V under good lighting conditions, which barely meets the requirements. 48V charging requirements for electric vehicles. For voltage, it is better to connect another 20W 12V battery board in series with the same specifications. Finally, connect it in parallel with the battery and test it to see if the battery board can charge the battery. Most of today's dual-span solar electric vehicle devices use each special 72V 130W solar electric vehicle panel. Because the voltage is related to the weather, a single high voltage panel can reach the rated charging voltage in the morning, afternoon and rainy days. When it comes to charging vehiclesElectric batteries, low voltage batteries cannot be charged in low light conditions. Calculation of the charging time of the 130 W battery panel on the battery: 48 V20 Ah*60% (battery discharge level) ÷ (130 W*80%) (power consumption and charging efficiency) = 5.5 hours for a full charge.