充电方案
电动汽车充电器
21世纪最大的挑战之一将是传统交通的脱碳，这将导致全球二氧化碳排放量的25%以上。脱碳必须在不牺牲我们对现代性的期望的互联性的情况下进行。预计2030年将有1.57亿辆电动汽车，因此充电基础设施需要并行进行，有时还需要预计电动汽车存量。LEM通过提供非常高技术的传感器和仪表，为电动汽车充电站的部署做出积极贡献，使充电站更可靠、更安全、更经济、更智能。
EV CHARGERS
One of the biggest challenge of the 21st century will be to decarbonized the traditional transportation accountable for over 25% of global CO2 emissions. Decarbonization must be done without sacrificing the interconnectedness we've come to expect from modernity. With a fleet of 157 mil of EVs expected in 2030, the charging infrastructure needs to proceed in parallel, and sometimes anticipate that of the EV stock. LEM actively contributes to the deployment of electric vehicle charging stations, by supplying very high technology sensors and meters making the charging stations more reliable, safer, more affordable, and smarter.
电动汽车供电设备
ELECTRIC VEHICLE SUPPLY EQUIPMENT (EVSE)
为电动汽车（EV）充电的两个主要系列在市场上占据主导地位，交流充电器用于交流充电器，直流充电器用于直流充电器
AC充电器也称为模式2（级别1）和模式3（级别2）或是市场上最主要的充电系列。这种充电模式能够通过标准家用插座直接为电动汽车充电，无论是从公共还是私人车库都可以轻松访问。AC充电器的技术也更实惠，因为它的电气结构不那么复杂，并且由于没有功率转换级而更紧凑，因此更易于运输。然而，他的主要缺点是其权力限制。交流充电器能够提供3.7千瓦至44千瓦的功率，但这种充电功率能力也受到电动汽车（OBC，车载充电器）内部转换级功率的限制。事实上，电动汽车电池必须用直流电充电，所以在车内放置一个AC/DC逆变器来实现这种能量转换。因此，EV的充电时间可以在12小时和2小时之间变化。
直流充电器，也称为3级或直流快速充电（DCFC）。该充电系统在进入汽车之前将电网中的交流电转换为直流电，并在不需要逆变器的情况下为电池充电。通常称为直流快速充电或3级充电，其工作功率从25千瓦到350千瓦以上。因此，EV电池能够接收高达350kW的直接功率，最快在15分钟内显著减少充电。
Two main families to charge a Electric Vehicle (EV) are dominant on the market, AC chargers, for Alternative Current charger and DC charger for Direct Current charger
AC chargers also known as Mode 2 (level 1) and Mode 3 (level 2) or are the most dominant charging family present on the market. This charging mode is able to charge an EV directly via a standard homehold socket, easily accessible from a garage, public or private. The technology of AC charger is also more affordable to due a less complexe electrical architecture and more compact due to the absence of power conversion stages, so more transportable. Nevertheless, his main drawback is its power limitation. AC chargers are able to deliver a power between 3.7 kilowatts and 44 kilowatts, but this charging power capability is also limited by the power of the conversion stage present inside the EV (OBC, On-Board Charger). Indeed EV batteries must be charged with a DC current, so an AC/DC inverter is placed inside the car to achieve this energy conversion. Thus, the charging time of an EV can vary between 12 and 2 hours.
DC chargers, also known as level 3 or direct-current fast charging (DCFC). This charging system converts the AC from the grid to DC before it enters the car and charges the battery without the need for an inverter. Usually called direct-current fast charging or level 3, it operates at powers from 25 kilowatts to more than 350 kilowatts. Thus the EV battery is able to receive a direct power up to 350kW, reducing significantly the charging at 15 minutes for the fastest.
泄漏电流传感器
LEM剩余电流检测（RCD）产品组合，适用于符合IEC 62752和UL 2231标准的6 mA DC/30 mA AC。
采用紧凑型解决方案设计，
具有单相和三相版本
数字输出（SPI总线）和模拟
跳闸信号，
可通过SPI设置阈值选项（在设计后期灵活决定适当标准）
为客户测试绕组
符合工业（CDSR）和汽车（CDT）级标准
LEAKAGE CURRENT SENSOR
LEM Residual Current Detection (RCD) portfolio for 6 mA DC / 30 mA AC compliant with IEC 62752 and UL 2231 standards.
Design with compact solutions with single & 3 phase version
Digital output (SPI bus) and Analog
Tripping Signal, with settable threshold option via SPI (Flexibility to decide the adequate standard late in design)
Tests windings for customer
Complies with standards Industrial (CDSR) and Automotive (CDT) grade versions
电源模块的电流传感器
电源模块的电流控制回路
LEM为功率模块转换器提供广泛的电流传感器，将交流电转换为直流电。功率转换器被放置在堆叠中，以增加直流快速充电站的功率，达到400kW。平均有八个转换器。在每个功率模块中，需要电流传感器来确保控制回路功能，以调节逆变器的稳定性和功率。
CURRENT SENSORS FOR POWER MODULE
Current control loop for Power modules
LEM provides a wide range of current sensors for power module converters, transforming the Alternative Current to a Direct Current. Power converters are placed in stacks to increase the power of DC fast charging stations, up to 400kW. In average eight converters are present. In each power module, current sensors are necessary to ensure the control loop function which regulate the stability and the power of inverters.
电动汽车充电器直流表
LEM的新型直流计费表（DCBM）是一种智能、紧凑的计费解决方案，将帮助电动汽车充电站利用直流充电的优势。
DCBM提供25kW至600kW的功率测量范围，是一种合法且经认证的计量表，可提供直流充电器的准确计费。
为了将充电时间缩短至几分钟，充电器制造商将交流转换为车外直流（DC），绕过车载充电器（OBC），直接为电动汽车的电池组供电。这种方法可以将充电功率提高到400千瓦。然而，这一转换阶段会产生电力损失，而最终用户（电动汽车的所有者）无需为此支付费用。因此，在转换阶段之后放置一个电表，以监控和计费传递到电动车辆的准确能量。
DC METER FOR EV CHARGERS
The new DC Billing Meter (DCBM) from LEM is a smart and compact billing solution that will help electric vehicle charging stations take advantage of the benefits of DC charging.
Offering a power measurement range from 25kW to 600kW, the DCBM is a legal and certified meter that provides accurate billing of DC chargers.
To reduce this charging time to only a few minutes, charger manufacturers convert the AC into a direct current (DC) outside the car, bypassing the On-Board-Charger (OBC) and supplying the battery pack of the electric vehicle directly. This method can boost charging power up to 400 kilowatts. However, this conversion stage generates power losses, which do not have to be paid for by the end user, the EV’s owner. Thus, an electric meter is placed after the conversion stage to monitor and bill the exact energy transferred to the electric vehicle.
