In actual use, how many kilometers can a new energy vehicle travel on a full charge? This depends on many factors. Factors related to the manufacturer are mainly the efficiency characteristics of the motor and the capacity and lifespan of the battery. Other objective factors include the rider's weight, the road conditions on which the rider usually rides, whether the brakes are used frequently, and the rider's riding habits, etc.
Another issue to note is that battery capacity gradually decreases over time, and the driving range on a full charge also decreases. When the maximum driving range of an old battery is no longer sufficient for a day's commuting needs, it is advisable to send the battery for maintenance or replace it with a new one.
Now that you know the main reasons for the shortened driving range of your electric vehicle, but you still can't determine the exact cause during normal use, check out the diagnostic methods below!
1. The first step is to check the electric vehicle battery. The battery is a major reason for the short driving range of electric vehicles. Severe sulfation and water loss, short circuits and open circuits on the plates, broken cells in individual cells, and poor consistency of the electric vehicle battery pack are the main causes of short driving range.
2. If the electric vehicle battery is found to be without problems after testing, other tests should be performed in sequence or other causes should be investigated.
1) Check if the charging port is loose. A loose charging port prevents the electric vehicle battery from fully charging, causing not only a short driving range but also, more importantly, prolonged low battery operation without the user's knowledge, ultimately leading to premature battery failure. Preventing loose charging ports is an urgent problem facing both electric vehicle manufacturers and dealers. The current remedial measure is to check for loose charging ports and tighten them whenever the battery box needs to be opened during repairs.
2) Is the electric vehicle's brake power-off function effective? The electric vehicle's brake power-off function is not optional; it must be effective, and there can be no ambiguity about this.
3) Malfunction of the electric vehicle's braking system. Loose motor bearings and other factors increase mechanical resistance, further exacerbating the already short driving range of the electric vehicle.
4) Decreased efficiency of electric vehicle motors. Prolonged high-current output, motor overheating, and severe mechanical vibration leading to demagnetization of the magnets are the main reasons for the decrease in motor efficiency.
3. Currently, it is not possible to accurately test the efficiency of electric vehicle motors at electric vehicle repair sites. The efficiency can only be roughly judged based on the electric vehicle's no-load speed and the heat generated by the motor during operation. However, this is not helpful for quantitative diagnosis and repair.
Short driving range in electric vehicles is a very complex and common problem, arguably one of the most difficult issues to resolve. However, no matter how intricate the reasons, the development of anything follows certain patterns. Many factors affect the driving range of an electric vehicle; therefore, it is crucial to choose a reputable vendor when purchasing and testing electric vehicle batteries to avoid wasting money.
