Can You Sit in the Car While It's Charging?
1 Answers
Theoretically, you can, but for safety reasons, it's not recommended to sit inside the car during high-voltage charging. This is because the car is connected to a high-voltage interface while charging, and the internal conditions differ from normal operation. Accidents are unpredictable, and the high voltage used during charging makes it unsafe for occupants. The reasons for the noticeable slowdown in charging speed are as follows: 1. Safety considerations: To increase charging speed, many modern electric vehicle chargers feature fast-charging capabilities, typically reaching 80% charge in about half an hour. However, most chargers use high current in this mode, which can easily cause short circuits or overload risks. To reduce danger, the battery temperature must be maintained within a safe range, leading to a significant slowdown in charging speed once the battery reaches around 80%. 2. Extending battery lifespan: Generally, as temperature rises, the chemical reactions inside the battery accelerate, and the chemical activity of the cells diminishes. This manifests as increased internal resistance, reduced output power, and degraded performance. To maintain optimal battery performance, charging speed slows down at around 80% to lower the temperature and delay internal chemical reactions. 3. Cycle life limitations: Typically measured in charge-discharge cycles, lithium-ion batteries gradually degrade with each cycle. After a certain number of cycles, battery performance declines significantly. Excess heat and rising temperatures during charging also affect the battery's cycle life and can trigger unwanted side reactions in the battery's chemistry.
