Understand the Development Trend of EV On-board Charging Technology

To make electric vehicles more competitive with gas-powered vehicles, it is important to address the problem of "range anxiety" for consumers. Keeping up with the national financial subsidy policy, automakers are now rolling out electrification solutions (including new battery technologies) to extend the range of their vehicles.

At present, in the absence of a major breakthrough in battery technology, the relatively simple and crude but effective way to solve this problem is to increase the capacity of power battery. Whereas, the following long-time charging experience will inevitably hamper the good user experience of EVs. Since the portable EV fast charger has not been fully popularized yet, the long-time charging is then still exerting great influences on the vehicles that use household charging.

EV Car Chargers

The main charging solutions for electric vehicles are contact charging (AC & DC charging) and non-contact charging (wireless charging). In addition to the DC charging system, electric cars should also be equipped with different E car chargers, charging sockets and plugs according to different charging form. By using devices like type 2 EV charging socket and type 2 EV charging cable, the electric cars can be charged using ordinary household power socket.

The E car charger installed on electric vehicles is mainly composed of power circuit (rectifier +PFC+ phase-shifting full bridge &LLC) and control circuit. As an on-board power electronic component, a good E car charger needs to have the following characteristics: safe, reliable, efficient, high-quality and low price.

The Development Trend of E Car Chargers

With the increase of EV vehicle range (350~500 km), the battery power is now generally greater than 60 kWh. The traditional 3.3 kW and 6.6 kW e car charger power can no longer meet the current slow charging (6~8 h) demand for pure electric vehicles. In the future, it is imperative to expand the power capacity of e car chargers.

In order to ensure the long driving range as much as possible after a single charge, high power and high efficiency are the design trends of the future EV charging systems. Although automobile OEMs can rely on the construction of DC quick charging facilities to provide quick charging solutions, there will also be additional cost and space requirements on DC quick charging infrastructures. With the development of value-added services such as V2G&V2L&V2V charging technologies, improving the charging power of e car chargers and using high-power e car chargers to charge vehicles are also important ways to provide charging solutions for private use electric vehicles and public facilities.

Although currently, the existing AC charging solutions still cannot meet the power levels above DC 50 kW, it is believed that the additional cost of redundant power electronics will definitely drive the continuous innovation in the integrated charging technologies. With the continuous evolution and improvement of wireless charging technology, it is believed that e car charging technology, such as the update of the existing EV cable type 2 and EV type 2 charger, will become an important competition point for electric vehicles. Meanwhile, AG Electrical will pay close attention to the industry dynamics at any time, so as to make the best response to production decisions.