What are the reasons for the low charging current of new energy vehicles?
2 Answers
Possible reasons include a damaged generator regulator, poor or oxidized connections in the generator's output wiring, or poor grounding. Below are some charging precautions: 1. Correctly grasp the charging time: Generally, battery charging takes about ten hours, and overcharging should be avoided. Plan charging stops in advance when preparing for a trip to avoid running out of power while driving. 2. Protect the charger: Try to avoid bumps and vibrations to the charger. To reduce costs, most chargers today are not designed for high vibration resistance. Many chargers experience internal potentiometer drift after vibration, leading to parameter shifts and abnormal charging. If the charger must be moved, it's best to wrap it in plastic foam. 3. Daily charging is recommended: Even if the daily driving distance is short, it's advisable to charge the battery daily to keep it in a shallow cycle, which can extend its lifespan. 4. Periodic deep discharge: Perform a deep discharge regularly to activate the battery. 5. Avoid storing the battery in a discharged state: Storing the battery in a discharged state can easily lead to sulfation, where lead sulfate crystals form on the plates, blocking ion channels and causing insufficient charging and reduced battery capacity. The longer the battery remains idle in a discharged state, the more severe the damage. Therefore, when the battery is not in use, it should be recharged once a month to maintain its health.
Last year when I was driving a new energy vehicle, I also encountered the issue of charging current not increasing. After struggling for a while, I realized the problem was with the charging station configuration. The power output mode of the charging station was set incorrectly, and selecting the lowest gear naturally resulted in slow charging. Additionally, aging and loosening of the charging gun interface increased contact resistance, causing the current to drop. Once during rainy weather, I also noticed that poor heat dissipation of the charging station triggered overheating protection, automatically reducing the operating current. I suggest you first check if the charging station settings are correct, then inspect the charging gun interface for carbon deposits or oxidation, and finally feel the surface temperature of the charging station to see if it's abnormal. I've experienced all these situations, and replacing the old station and upgrading the cables solved the problem.
