There are several safety measures related to electric vehicle (EV) charging that can influence charging speed, although they may not directly cause a decrease near full capacity. Here are some practices and technologies that could affect charging dynamics:
- Built-in Temperature Sensors and Automatic Shutdown: Some EV charging systems include temperature sensors that can detect overheating, which can be a risk as the battery approaches full charge. If the system detects excessive heat, it might reduce charging speed or even shut down to prevent damage or fire. This feature is more about preventing overheating hazards than specifically slowing charging speed near full capacity.
- Voltage and Current Limitations: Charging systems often have built-in voltage and current limiters to ensure safe operation. These safety measures might limit the maximum power input, potentially affecting how quickly a battery can charge, especially in fast-charging scenarios. However, this is more about maintaining safety standards throughout the charging cycle rather than specifically slowing charging near full capacity.
- Charger Efficiency and Design: Some charging systems are designed to reduce power input as the battery approaches full charge to prevent overcharging, which can degrade the battery. While this doesn’t directly decrease charging speed due to safety measures, it is a common practice that can result in slower charging rates during the final stages of charging.
- Residual Current Devices (RCDs): These devices can interrupt the power supply if a fault is detected, but they do not inherently slow down charging. However, if an RCD trips due to a fault, charging will be halted until the issue is resolved.
In summary, while safety features like temperature monitoring and automatic shutdowns are crucial for preventing hazards, they are not typically designed to decrease charging speed near full capacity directly. Instead, they ensure safe operation and can interrupt charging if necessary to prevent overheating or other issues. Charging speed reductions near full capacity are often inherent in charging protocols to prevent battery degradation rather than being a direct result of safety measures.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/are-there-any-safety-measures-that-cause-the-charging-speed-to-decrease-near-full-capacity/
