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).

The **Charge Data Daily/Session Dictionaries** contains definitions for each available parameter collected as part of an individual charging session, aggregated at either a daily or session level. The parameters available will vary between vehicles and chargers.

The **Charger Attributes** table contains specific charger characteristics, coded to at least one anonymous Charger ID and linked to either a single or a range of Vehicle IDs. Vehicle ID can be used as a key between charging data and vehicle attribute tables.

The **Charger Attributes Data Dictionary** contains definitions for each available parameter collected on the physical and operational characteristics of the charging hardware itself.

The **Vehicle Attributes Data Dictionary** contains definitions for each available parameter associated with a vehicle’s physical and functional attributes and fleet context.

The **Vehicle Attributes** table contains specific vehicle characteristics, coded to an anonymous Vehicle ID. This Vehicle ID can be used as a key between vehicle data and vehicle attribute tables, and in cases where charging data are supplied, links a vehicle with the charger(s) that supplied it power.

The **Charging Data** tables contain the data from each charger’s operations, coded to at least one anonymous Charger ID and linked to either a single or a range of Vehicle IDs. Vehicle ID can be used as a key between charging data and vehicle attribute tables.

Data is being uploaded quarterly through 2023 and subject to change until the conclusion of the project.

充电数据可通过三类来源采集，不同来源附带的附加信息层级有所差异。按附加信息从多到少的近似排序，三类来源依次为：
• 电动汽车供电设备（Electric Vehicle Supply Equipment, EVSE，即充电器）
• 车辆自身车载系统
• 公用事业分区电表

多数充电器搭载可采集并上报充电会话数据的软件。若该软件无法使用，则可通过充电车辆的车载系统记录数据。若上述两种方式均不可用，则可从公用事业分区电表获取数据——此类电表仅用于追踪流向一台或多台充电器的电能。

直接从EVSE采集的数据通常准确性最高、采样频率也最高。但此类数据往往无法分辨单次充电会话中具体正在充电的车辆。当数据中仅包含单一充电器ID，且对应一组车辆ID（例如CH001、EV001-EV005）时，即可判定为EVSE侧采集的数据。

从车辆车载系统采集的数据通常无法提供当前使用的具体充电器信息。当数据中仅包含单一车辆ID，且对应一组充电器ID（例如EV001、CH001-CH005）时，即可判定为车辆侧采集的数据。

从公用事业分区电表采集的数据则完全无法得知具体充电车辆与在用充电器的信息。当数据中包含多组车辆ID与多组充电器ID，但仅对应单一车队ID（例如EV001-EV005、CH001-CH005、Fleet01）时，即可判定为分区电表采集的数据。

**充电数据每日/会话字典**收录了单次充电会话采集的全部可用参数的定义，数据可按每日维度或会话维度进行聚合。可用参数会因车辆与充电器的不同而存在差异。

**充电器属性表**收录了具体的充电器特征信息，每条记录均对应至少一个匿名充电器ID，并关联单一或一组车辆ID。车辆ID可作为充电数据与车辆属性表之间的关联键。

**充电器属性数据字典**收录了充电硬件本身的物理与运行特征相关的全部可用参数的定义。

**车辆属性数据字典**收录了与车辆物理属性、功能属性及车队背景相关的全部可用参数的定义。

**车辆属性表**收录了具体的车辆特征信息，每条记录均对应一个匿名车辆ID。该车辆ID可作为车辆数据与车辆属性表之间的关联键；在提供充电数据的场景中，还可将车辆与为其供电的充电器建立关联。

**充电数据表**收录了各充电器的运行数据，每条记录均对应至少一个匿名充电器ID，并关联单一或一组车辆ID。车辆ID可作为充电数据与车辆属性表之间的关联键。

截至2023年，数据将按季度上传，且在项目正式收尾前可能会进行更新调整。

搜集汇总

背景与挑战

背景概述

该数据集是一个关于电动汽车充电数据的集合，包含来自充电设备、车辆和公用事业子表的多源数据，涵盖充电会话参数、充电器和车辆属性等信息。数据通过匿名ID关联，并定期更新，适用于电动汽车充电行为和相关硬件特性的研究。