However, the process of charging may have a large floating process, especially in the final stage, the floating is more serious, it is more difficult to calculate, and can only calculate a relatively close power. In the process of charging, the charging efficiency is not 100%, there will be a certain loss, after calculating the approximate power, it is generally multiplied by a multiple of 1.15-1.3.
Therefore, the charging problem of electric vehicles is a complex mathematical calculation problem, which requires programmers to design algorithms to calculate the charging amount accurately.
Electric vehicle power calculation is as follows: electric vehicles are charged with lead-acid batteries, generally charged to 1.05 times the capacity of the battery, and then calculated according to the charging voltage, according to the rated capacity of each discharge of electricity, electricity consumption = charging voltage * rated capacity of the battery *1.05.
For example, 48V20AH battery charging, according to the battery fully discharged (that is, the rated capacity) after a charge needs to be charged 20*1.05=21AH, the average charging voltage is 51.6V, the total power consumption is 51.6*21=1.0836KWH, the general charging time is about 8 hours, Therefore, the average power consumption per hour is 0.135 KWH. Formula: Charging current x charging voltage x charging time (hour) = kilowatt-hour.