What Causes the Charging Current of New Energy Vehicles to Decrease?
3 Answers
New energy vehicle charging current reduction can be caused by a damaged generator regulator or poor connection/oxidation of the generator output line. Below are specific explanations about new energy vehicles: 1. Definition: New energy vehicles refer to automobiles that utilize unconventional vehicle fuels as power sources (or use conventional vehicle fuels with new onboard power devices), integrating advanced technologies in power control and driving systems to form vehicles with advanced technical principles, new technologies, and novel structures. 2. Classification: New energy vehicles include pure electric vehicles, range-extended electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, hydrogen engine vehicles, etc.
I often drive new energy vehicles, and there can be various reasons for encountering reduced charging current. For example, poor contact of the charging gun, or dust and oxides causing increased resistance, naturally reducing the current. Low battery temperature is also a common factor; when it falls below the safe value, the system automatically limits the current to protect the battery. Issues with the charger itself are also common, such as unstable power from home charging piles or aging cables leading to insufficient output. There's also the possibility of mistakenly setting the APP to slow charging mode, which limits the current; or the battery management system reducing charging speed due to battery aging. It's recommended to first check if the gun head is clean and try a different charging point; check the APP to see if the settings are correct; if temperature is the issue, preheat before charging. If this persists, quickly get the battery health checked to ensure driving safety. Avoid letting minor issues turn into major faults, affecting daily travel.
After driving for over a decade, I've found that reduced charging current in new energy vehicles is related to hardware and external conditions. Faulty charging guns or stations are the primary cause, where connector wear or cable damage leads to poor contact and decreased current. Battery temperatures that are too high or too low trigger protection mechanisms, with the BMS system limiting current to prevent damage. Unstable household power voltage also affects charging, as the current automatically decreases when voltage is too low. Issues may also arise from the vehicle's charging module, where internal relay or circuit faults disrupt normal current. DIY troubleshooting includes ensuring the gun is securely plugged in and cables are intact; checking charging logs via the app; and testing if household voltage is stable at 220V. If problems persist, don't push through—seek professional repair to avoid battery failure. Safety first, as maintaining new energy vehicles is a science.
