DOE EV Data Collection - Charging Data

Charging data are collected from one of three sources, each with varying levels of additional information. These sources, in approximate order from most to least additional information, are: • The electric vehicle supply equipment (charger) • Onboard the vehicle itself • From a utility submeter. Many chargers provide software that allows for the collection and reporting of charging session data. If unavailable, data may be recorded by the charging vehicle’s onboard systems. If neither of these options is available, data can be acquired from utility submeters that simply track the energy flowing to one or more chargers. Data collected directly from the electric vehicle supply equipment (EVSE) are typically the most accurate and highest frequency. However, it is not always possible to discern which exact vehicle is being charged during any one session. EVSE-side data can be identified where a single charger ID but a range of vehicle IDs are present (e.g., CH001, EV001-EV005). Data collected from the vehicle’s onboard systems usually does not provide information on which exact charger is being used. Vehicle-side data can be identified where a single Vehicle ID but a range of Charger IDs are present (e.g., EV001, CH001-CH005).Data collected from utility submeters provide no information on which specific vehicle is charging or which specific charger is in use. Submeter data can be identified where multiple Vehicle IDs and multiple Charger IDs are present, but only a single Fleet ID is present (e.g., EV001-EV005, CH001-CH005, Fleet01).

充电数据收集自三个不同的来源，每个来源所提供的信息量级不尽相同。这些来源按信息量级从高到低依次为：
• 电动汽车充电设备（充电器）
• 车辆本身
• 来自公用事业分表。众多充电器提供了用于收集和报告充电会话数据的软件。若软件不可用，数据可能由充电车辆的自带系统记录。若上述两种选择均不可行，则可从仅追踪流向一个或多个充电器的电能的公用事业分表中获取数据。直接从电动汽车充电设备（EVSE）收集的数据通常最为精确，且频率最高。然而，并非总能在任何一次充电会话中识别出具体是哪一辆车辆正在充电。当存在单个充电器ID但多个车辆ID时，可以识别EVSE端数据（例如，CH001，EV001-EV005）。从车辆自带系统收集的数据通常不提供关于使用的是哪一台具体充电器的信息。当存在单个车辆ID但多个充电器ID时，可以识别车辆端数据（例如，EV001，CH001-CH005）。来自公用事业分表的数据不提供关于具体哪辆车辆正在充电或具体哪台充电器正在使用的任何信息。当存在多个车辆ID和多个充电器ID，但只有一个车队ID时，可以识别分表数据（例如，EV001-EV005，CH001-CH005，Fleet01）。