What Causes an Electric Vehicle to Intermittently Lose Power?
2 Answers
The reasons for an electric vehicle intermittently losing power are as follows: Loose Battery Connection: An electric vehicle's battery is subjected to vibrations multiple times a day. Over time, this can cause the battery connections to loosen, resulting in intermittent contact issues that lead to the vehicle stopping and starting unpredictably. In such cases, the user only needs to inspect the battery, locate the loose connection, and reattach it properly to resolve the issue. Faulty Brake Power Cutoff Switch: A malfunctioning brake power cutoff switch can also cause the electric vehicle to stop and start intermittently. The principle behind this is that when the vehicle brakes, the brake switch sends a signal to the controller to either disconnect or connect, which then stops the drive motor, cutting off power. If the switch is faulty, it can send incorrect signals, leading to intermittent operation. To fix this, the brake power cutoff switch usually needs to be replaced. Faulty Hall Sensor: If the Hall sensor malfunctions, the electric vehicle may operate abnormally, causing it to stop and start intermittently. The typical solution for this issue is to replace the Hall sensor to restore normal operation.
I've encountered a similar issue before. My friend's electric vehicle sometimes runs smoothly but suddenly loses power, which is really annoying. After analyzing, it might be due to battery aging. After three to five years of use, the performance noticeably declines, and in low temperatures, the power comes slowly with sudden drops. Another possibility is a charging system problem, like a loose charging cable or a faulty charging station, which can cause false power readings. There could also be a software bug in the battery management system—just like a phone, it needs firmware updates; otherwise, it might malfunction. For daily maintenance, remember to regularly visit a shop for a full inspection to check for wear and corrosion on the wiring harness. Don't try to save money by making do—safety first. If this happens on the highway with a sudden loss of power, it's dangerous. Quickly find a reliable technician for a diagnosis to prevent small issues from turning into major repairs.
