国庆假期返程高峰期间，部分高速公路服务区推出了充电"八分饱"措施，即在电量达到80%左右时引导车主结束充电。1 国庆假期新能源车平均出行量是日常的1.8倍，1 这一做法通过优化充电管理来应对出行压力。
该措施的关键在于充电效率的物理原理。锂电池在0-80%区间属于高效快充段，充电功率较高；超过80%后进入涓流慢充阶段，功率会断崖式下降。1 专家表示浅充浅放不会对电池造成影响。1 这种充电策略既能满足车主的基本出行需求，又能规避低效率充电的困扰。
实施效果明显。连霍高速江苏段彭城服务区在高峰时段采取充电上限动态调至80%-85%的措施，单小时最多可周转82台充电车辆，全区单桩周转效率较以往提升了20%左右。1 湖北交投枣阳北服务区也在高峰时段采取了充电"八分饱"措施，1 整体上减少了车主的等待时间，提高了服务区的运营效率。
During the National Day holiday return rush, several highway service areas have adopted an "80% charge" policy, guiding electric vehicle owners to stop charging once their batteries reach approximately 80% capacity.1 This measure aims to optimize turnover efficiency at charging stations while reducing wait times for drivers.1
The approach is based on battery chemistry principles: lithium batteries operate in their high-efficiency fast-charging phase between 0-80% capacity, with significantly higher charging power during this range.1 Once charging exceeds 80%, batteries enter a trickle-charge phase where charging power drops dramatically.1 According to battery experts, shallow charging and discharging cycles do not harm battery longevity.1
The demand for electric vehicle charging has surged during the holiday period, with average daily travel volume reaching 1.8 times normal levels.1 At peak times, some service areas have dynamically adjusted their charging limits to between 80-85% capacity.1 On the Lianhuo Expressway in Jiangsu Province, Pengcheng Service Area has achieved a maximum turnover of 82 charging sessions per hour.1 Overall, single-charger turnover efficiency across the region has improved by approximately 20% compared to previous periods.1 Hubei Transportation Investment Group's Zaoyang North Service Area has similarly implemented the "80% charge" strategy during peak hours.1
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