What Does Insulation Fault in New Energy Vehicles Mean?
3 Answers
Insulation fault in new energy vehicles refers to a leakage in the electrical circuit. The following is a detailed introduction to insulation faults in electric vehicles: 1. Cause: Insulation faults occur when the electrolyte inside the battery leaks, leading to liquid seepage. When the liquid seeps to a certain extent, the insulation layer is compromised, creating a conductive circuit between the battery modules and cells, which triggers the fault warning. If there is only a single point of insulation failure in the system, it may not immediately cause noticeable effects. However, multiple points of insulation failure can result in leakage current flowing between these points, potentially leading to a fire. 2. Precautions: Operators must wear protective equipment that meets national safety standards, such as insulated gloves and insulated shoes. In the event of an insulation fault, the faulty battery pack usually needs to be replaced. If multiple insulation faults occur, the entire battery may need to be replaced.
In simple terms, an insulation fault in a new energy vehicle means there's a leakage in the high-voltage system. The first time I encountered this alarm while driving an electric car, it really made me nervous. It means the insulation layer of the battery or wiring is damaged, and current may leak, potentially causing electric shock or even a fire. Common causes include battery aging, poor sealing allowing moisture ingress, severe vibrations damaging the wiring, or even factory defects. A friend's car triggered the alarm after heavy rain, and the mechanic later diagnosed it as having too low insulation resistance. The solution? Stop driving immediately and have a professional technician use diagnostic tools to locate the exact fault point, then replace the faulty parts or reinforce the sealing. For regular maintenance, it's important to inspect the wiring and avoid parking in damp places for extended periods. Safety should always come first.
Insulation failure in electric vehicles refers to the loss of good isolation in the power system, increasing the risk of leakage. Common causes include failure of battery pack sealing rings, damage to high-voltage wiring harnesses, connector corrosion, or degradation of insulation materials due to high temperature and humidity. I remember once seeing a technician diagnose a similar issue—first using a megohmmeter to measure insulation resistance, which triggered an alarm if it fell below the standard. Preventive measures are quite simple: avoid driving through waterlogged roads, conduct regular insulation tests, and don’t ignore any abnormalities. Repairs may involve replacing battery modules or rewiring harnesses, but the key is not to delay. Untreated, this fault can lead to serious accidents, shorten the vehicle’s lifespan, and endanger other components.
