Can electric car batteries accurately display their charge level?

For electric vehicles, the battery life of the vehicle is also a concern for everyone. When the vehicle is in use, people may worry that the battery life may be inaccurate due to sudden driving, resulting in a sudden power outage and a breakdown on the road. Why can't electric vehicles accurately display the battery life when in use?

The power display of electric vehicles today is a reference power. It is not so easy to accurately reflect the remaining power of the battery. Take any electronic product as an example. There will be some errors in the remaining power. The power display of electric vehicles will also be caused by some factors. The display and calculation of the car's power are predicted and calculated through the SOC estimation method. There are many factors involved in the calculation of this SOC. For electric vehicles, the power generated by the vehicle when it is driving is different. There are large and small power discharge situations, and even parking brakes and other situations. It also includes the feedback of braking energy generated when it is working.

Furthermore, battery materials are diverse, and the conductivity and discharge brought by different materials are consistent. So for this thing, to a certain extent, it indirectly leads to the calculation and measurement of the amount of charge in the electric vehicle battery to form a more abstract data. When the battery is working, its internal complex working state is also the detected value and cannot accurately determine the battery SOC through a single measurement.

In summary, the road conditions of pure electric vehicles are different. When in use, it will be difficult to estimate the power of the battery inside the electric vehicle due to the influence of various factors. Therefore, there may be certain errors in the accuracy of the battery, which leads to its inaccurate display.