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首页> 外文会议>6th Hybrid and Electric Vehicles Conference >Off-vehicle energy store selection for high rate EV charging station
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Off-vehicle energy store selection for high rate EV charging station

机译：高速率电动汽车充电站的车外储能器选择

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Fast Electric Vehicle (EV) charging, defined as a charging power greater than 120kW, is needed to help overcome range anxiety, the worry of an EV owner that an EV battery will run out of energy before a destination is reached. Fast charging stations require a high power grid connection, which limits the available installation locations and increases grid connection costs. A stationary off-vehicle energy store can be used at a fast charging station to buffer the power between the grid and the EV to minimise and control the grid connection power. It is shown that for a charging station in the near future, which is used infrequently, a small (-50kWh) offvehicle energy store that can accept high C-Rates (1-10C) during charge and discharge may be used. It is suggested that lithium iron phosphate batteries are used for this purpose and experiments are currently being undertaken to validate this. For a charging station further in the future, which is used more frequently, a much larger (4MWh) off-vehicle energy store with lower C-Rates (<;1C) is required. It is suggested that lead-acid batteries or flow batteries are used for this purpose. If flow batteries are chosen, supercapacitors or lithium-ion batteries could be used in a hybrid system to deal with power fluctuations that occur as different numbers of EVs arrive to charge.
机译：需要快速电动汽车（EV）充电（定义为大于120kW的充电功率）来帮助克服范围焦虑，这是因为EV所有者担心EV电池在到达目的地之前会耗尽能量。快速充电站需要高功率的电网连接，这限制了可用的安装位置并增加了电网连接成本。可以在快速充电站使用固定的非车载储能器，以缓冲电网和EV之间的功率，以最小化并控制电网连接功率。结果表明，对于不经常使用的不久的充电站，可以使用小型（-50kWh）的汽车储能器，该储能器在充电和放电期间可以接受较高的C额定值（1-10C）。建议将磷酸铁锂电池用于此目的，目前正在进行实验以验证这一点。对于将来更频繁使用的充电站，需要具有较低C额定值（<; 1C）的更大的（4MWh）车载能量存储。建议为此使用铅酸电池或液流电池。如果选择液流电池，则可以在混合动力系统中使用超级电容器或锂离子电池来应对由于不同数量的电动汽车充电而发生的功率波动。

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