How far can electric cars go?

General electric cars running distance is related to electric motor power, battery capacity and voltage.

Such as motor power is 1500 w, with 72 v50ah batteries, theoretical range at about 108 kilometers.

But in fact the road with a 80 km is normal.

A run of a 20 and 30 kilometers is normal.

Calculation is as follows:

1) the average current at A constant speed = = 1500 w/power/voltage 1500 v = 20.8 A;

2) theory driving time = battery capacity/average current = 50 ah/A = 20.8 20.8 hours;

3) according to 45 kilometers per hour driving mileage calculation theory = time * speed of 45 km/H = 2.4 H * = 108 kilometers.

Completely discharge after charging time about 4.06 KWH.

Filling the electricity is generally 1.05 times of battery discharge capacity, calculated according to the charging voltage, power consumption = * 1.05 * battery charging voltage rated capacity. Calculation process is as follows:

Filling the charging amount = 50 * 1.05 = 52.5 AH.

Power consumption = 52.5 * 77.4 (average charging voltage) = 4063.5 WH.

1000 wh = 1 KWH, or a full charge will need about 4.06 KWH.

The design of the electric vehicles sold below 72 v defects; In terms of 72V, a charge can run 100 kilometers. The charging time is too long, need every night, the measured charging power of 300 watts, charging current of 4.16. 8.6 hours must be full of. Discharge the dog 240 watts, 0-60 kilometers per hour. Battery to 72 v, cannot completely discharge, to run 100 kilometers.

To see is how many v voltage, because the electric range is mainly related to the capacity of the battery, need to know the capacity of the battery to estimate mileage.

70 v battery is not in principle. The lead battery is 12 v/split, multi-purpose is 3, 4 blocks in series, namely, 36 v, 48 v, and another 18 v four series of 64 v, 70 v, in principle, you said is not. How many kilometers, the electric car can run industry called line continuation mileage, it not only has something to do and battery voltage, current, and motor type, rated power output, efficiency, load, etc. According to the 64 v20a batteries, power 500 w motor, line continuation mileage is about = 20 / (500 w / 64 v / 20 a) * 80% * 30 km/h = 61.44 km. That is to say, if your electric cars under normal driving conditions, road conditions is good, the temperature over 10 degrees below 35 degrees, only 1 case), the motor efficiency can reach 80%, so you can line continuation 61 km.

Now family with electric cars, there are two more words of the masses.

A 48 v12ah, four 12 ah battery series, a new battery, can run 40-50 kilometers, the old, according to the specific situation of the electric vehicle.

A 48 v20ah, four 20 ah battery series, 20 ah battery capacity is larger, the new battery can travel 70-80 km.

Electric cars can run far, now actually do not have to worry about, now many of the new electric car charger quickly, but also can maintain the battery, such as a new type of parallel electric charger, 48 v12ah electric cars, 1 -- 2 hours can be recharged, 48 v20ah 2-3 hours can full of electricity, so to avoid the charge for a long time due to security issues, and the parallel charging can make electric vehicle battery voltage is consistent, effectively prolong the service life of the battery, Taobao should have, mainly to solve the security problems caused by the electric vehicle charging time long.

70 v battery is not in principle. The lead battery is 12 v/split, multi-purpose is 3, 4 blocks in series, namely, 36 v, 48 v, and another 18 v four series of 64 v, 70 v, in principle, you said is not. How many kilometers, the electric car can run industry called line continuation mileage, it not only has something to do and battery voltage, current, and motor type, rated power output, efficiency, load, etc. According to the 64 v20a batteries, power 500 w motor, line continuation mileage is about = 20 / (500 w / 64 v / 20 a) * 80% * 30 km/h = 61.44 km. That is to say, if your electric cars under normal driving conditions, road conditions is good, the temperature over 10 degrees below 35 degrees, only 1 case), the motor efficiency can reach 80%, so you can line continuation 61 km.

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