What are the reasons for battery failure indication in new energy vehicles?
2 Answers
New energy vehicles display battery failure for the following reasons: 1. Excessive battery temperature difference: This is caused by loose cooling fan connectors or cooling fan malfunction. 2. Battery temperature too high or too low: Reasons include loose cooling fan connectors; cooling fan malfunction; or damaged temperature probes. 3. Insulation failure: Causes may include water ingress in the battery box or connectors; electrolyte leakage from battery cells; high environmental humidity; or false insulation alarms. Relevant information about new energy vehicles is as follows: 1. New energy vehicles: These refer to vehicles that use unconventional vehicle fuels as power sources (or use conventional vehicle fuels with new types of onboard power devices), integrating advanced technologies in vehicle power control and driving, resulting in advanced technical principles and featuring new technologies and structures. 2. Classification: New energy vehicles include four major types: hybrid electric vehicles (HEV), battery electric vehicles (BEV, including solar-powered vehicles), fuel cell electric vehicles (FCEV), and other new energy (such as supercapacitors, flywheels, and other high-efficiency energy storage devices) vehicles.
Hey, my electric car has been running for over three years and has encountered several battery fault warnings. There are quite a few reasons: first, battery aging itself, like frequent fast charging or full discharges reducing cell lifespan; second, temperature effects—extreme cold in winter or high heat in summer can trigger false system protection alarms; third, connection issues, like loose plugs or corroded wiring causing signal interruptions. That time on the highway, I pulled over immediately, called the service hotline, and it turned out to be dust buildup on the sensor causing a false alarm. My advice: pay attention to regular maintenance, avoid overusing fast charging, and ideally get a professional scan for fault codes at a 4S shop. Safety first—don’t risk getting stranded mid-trip, it’s a huge hassle.
