Most electric vehicle charging stations that you find today in home, office, and private parking lots use AC charging. Charging speed depends on the car battery's capacity, power density, and charging power as well as the power available to the charging infrastructure, which is usually limited to 22 kW. DC charging stations, on the other hand, provide much higher charging capacity. Often deployed near highways or at public charging stations, DC charging stations are ideal solutions when you don't have too much time to recharge the car batteries. DC charging is also making its way into home charging stations with charging capacity up to 40KW, also called wallboxes, offering new possibilities for customers since it allows not only fast charging but also bidirectional charging where you can reuse available energy in the car batteries to load home battery storage systems.
主要挑战
壁挂式直流充电器除了易于安装和维护外，家庭和企业用户也看重以下特性：
- 紧凑的夹具、小巧的外形，以及实用的设计
- 智能壁挂式充电器解决方案旨在优化能量流和降低供电成本
- 针对直接供应给车辆电池的电力，实行精确传感和控制
- 高功率密度解决方案，支持宽泛的输出电压范围（200 - 1000 V）和灵活的充电电源（22 - 40 kW）
- 双向充电，面向车辆到电网（V2G）和车辆到家（V2H）应用
我们的产品和解决方案
为了满足市场对于交流和直流壁挂式充电器的需求，意法半导体基于STM32微控制器，以及快速开关、高性能功率器件（包括碳化硅和硅功率MOSFET）、SiC整流器和保护器件（TVS），以及隔离式栅极驱动器提供了完整的解决方案。
为了帮助开发高功率密度直流壁挂式充电器，意法半导体提供了SiC电源模块解决方案、用于实时能量监测和电网电源连接的计量装置，以及用于与电动汽车连接的CAN和电力线收发器。