The market sampling test shows that current limit values of the controllers are generally higher for vehicles produced by electric bicycle manufacturers, especially for luxury electric bikes. As we all know, increasing the current limit value directly affects the battery life is obvious.
The same group of batteries, the greater the current l, the lower the terminal voltage U, the same current discharge for different specifications of the battery, the greater the capacity, U is higher, the efficiency of the motor is related to the current. If the current limit of the control is already in the motor efficiency, the falling region of the curve, even if the efficiency curve falls below the inflection point, then the increase of the current limit value is futile.
Therefore, considering the voltage drop of the battery under the current load, the motor efficiency value cannot be ignored. The current limit value of the controller must be within the inflection point of the drop of the motor efficiency curve, and the current limit value cannot be increased blindly.