As for the development trend of power expansion and cost reduction of vehicle charger products, there are two main technical trends: one is the development from one-way charging to two-way charging, and the other is the development from single-phase charging to three-phase charging. Technology Trend: one-way charging technology to two-way charging technology development. Vehicle Charger and DCDC integration, one-way low-power vehicle charger products will still be widely used, such as Phev, small EV field. The integrated design of the new system is used to optimize and reduce the cost, and an efficient and cheap vehicle charger is introduced. The integration of charger and DCDC function can reduce the electrical connection, reuse water-cooled substrate and part of Control Circuit. In addition, the development of intelligent driving technology of electric vehicle makes the wireless charging become the technical air port, the improvement of battery energy and the change of customer demand accelerate the development of two-way charging technology. Technology trend two: single-phase charging technology to three-phase charging technology development, focusing on integrated charger technology. There is great potential to increase the AC charging level within the existing charging standards. Many electric vehicles do not support AC charging power levels higher than 6.6 kw, so AC connectors are needed.
The standard charging power and EV AC charging function are not fully matched, and there is great potential to increase the AC charging level in the existing charging standards. The technical path to increasing charging power and reducing the cost, weight and space required for vehicle charging systems is the effective integration of battery chargers and motor drivers, integrated chargers designed for EV charging at these power levels, additional cooling system and component requirements need to be avoided. Recently, the vehicle charger is developing towards the direction of intelligentization, miniaturization, lightweight and high efficiency. It is pointed out that the research and development goals of the technology are: Intelligent charging, safe management of battery charging and discharging, improving the efficiency and power density of the vehicle charger, to realize the miniaturization of vehicle charger, under the demand pull and technology push, vehicle charging technology will realize continuous innovation.
Post time: Jun-09-2021