What Causes Temporary Weakening of Regenerative Braking?
2 Answers
Energy recovery braking temporarily weakened reasons are as follows: Failure of the energy recovery system: Energy recovery refers to a technology applied in automobiles or rail transit that converts the heat energy generated during braking into mechanical energy. During this conversion process, if the energy is not stored in capacitors and the vehicle's motor malfunctions during processing, it can lead to temporary weakening of regenerative braking. Battery temperature too low: When the battery temperature is too low, the electronic control system limits the kinetic energy recovery current, which correspondingly reduces the braking force, resulting in temporary weakening of energy recovery braking. When the vehicle's battery temperature rises, the energy recovery braking returns to its original level.
I've been driving an electric vehicle for several years and have encountered a few instances where the regenerative braking suddenly weakened. One time, it was during a winter morning drive when I noticed significantly reduced regenerative force due to decreased battery activity in low temperatures, which automatically led the system to reduce regeneration intensity to avoid overvoltage issues. Another time, when the battery was fully charged, the vehicle suspended the regeneration function to protect the battery from overcharging, leaving only mechanical brakes for deceleration. I think there are quite a few influencing factors in daily driving, such as long downhill conditions where the system might temporarily adjust to prevent overheating. When encountering such weakening, I usually check if the regenerative braking option in the settings menu is functioning normally—sometimes, it's just a minor software glitch that resolves after a restart. If it occurs frequently, it's necessary to visit a service center to check for possible sensor damage. Developing a habit of preheating the car can help mitigate low-temperature issues. In conclusion, these temporary changes are mostly protective mechanisms and don't affect safe driving.
