In the Battery Management System (BMS) of new energy vehicles, common-mode chokes are employed to filter out high-frequency harmonics generated during battery pack charging and discharging. This safeguards the accuracy of data acquisition, prevents misjudgements of battery status caused by electromagnetic noise interference, and ensures the precision and stability of energy management.

During the braking process of electric vehicles, transformers participate in the energy recovery system, converting kinetic energy generated during braking into electrical energy and storing it back into the battery. This enhances the vehicle's energy utilisation efficiency and extends its range. For new energy vehicles equipped with energy storage systems (such as supercapacitors), high-frequency transformers can be employed to achieve efficient connection and energy conversion between the energy storage system and the battery system or other electrical systems. This optimises the performance of the energy storage system, enabling flexible energy allocation and management.

In motor drive systems, transformers are employed to convert direct current into alternating current, thereby providing the motor with an appropriate drive signal. The application of high-frequency transformers enables smaller, more efficient inverters, enhancing the overall performance of the motor drive system.

Amorphous cores exhibit high permeability and low losses, rendering them highly effective in high-frequency applications. This capability significantly reduces iron losses and improves motor efficiency.

Enhancing charging efficiency: High-frequency transformers operate at elevated frequencies, enabling reduced size and weight while boosting charging efficiency and shortening charging times to accommodate fast-paced lifestyles. These transformers allow charging equipment to adapt flexibly to varying voltage and current requirements, enhancing versatility and convenience.

In new energy vehicles, the high-voltage direct current from the battery must be converted into low-voltage direct current suitable for in-vehicle electronic equipment. High-frequency transformers are employed in DC/DC converters to efficiently achieve voltage transformation, providing a stable power supply for in-car lighting, audio systems, control systems, and other components. Future improvements in their efficiency and power density will better meet the growing power demands of the increasing number of electronic devices within the vehicle.