04/28/2025, 09:00 AM UTC
太阳能电动汽车充电：柏林工业大学对730户配备太阳能和电动汽车的家庭进行研究Solar Charging of Electric Vehicles: HTW Berlin Examines 730 Households with Solar Systems and Electric Vehicles
➀ 柏林工业大学研究显示，配备光伏、储能电池和电动汽车的家庭能源自给率达73%，年电网用电量从6900千瓦时降至1900千瓦时；
➁ 挑战包括电动车充电效率低（1.4千瓦时仅76%转化率）和待机能耗问题（充电桩待机功耗达20瓦/年耗电164千瓦时）；
➂ 动态余电充电技术将太阳能利用比例提升25%，15-20千瓦大型光伏系统可满足电动汽车62%的能源需求，显著降低碳足迹。
➀ A study by HTW Berlin shows households with PV systems, batteries, and EVs achieve 73% energy autonomy, reducing grid electricity use from 6,900 kWh to 1,900 kWh annually;
➁ Challenges include low charging efficiency (76% at 1.4 kW) and standby energy waste (Wallboxes consume up to 20W, costing 164 kWh/year);
➂ Dynamic surplus charging boosts solar usage by 25%, and larger PV systems (15-20 kW) cover 62% of EV energy needs, enhancing sustainability.
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