It utilizes advanced electromagnetic simulation technology and adopts new designs of stator and rotor grooves, yoke and teeth sizes, and uses reasonable gap flux density value at the yoke and teeth of the electric motor. Though the product uses common electromagnetic materials, compared with electric motor of the same power, it features less materials, small size, light weight, low noise, even heat dissipation, high efficiency and high power density, etc.

The electric motor control system adopts sine wave vector control technology which features advantages like high efficiency, stability, low noise and easy installation. The series control devices can work with relatively smaller battery current while providing good acceleration and gradeability. Meanwhile, the regenerative brake system can gather the energy during brake, which can effectively increase the cruising mileage and reduce energy consumption. It adopts large power MOSFET high frequency design and its efficiency is up to 96%. It also features precision control with a powerful intelligent microprocessor. 

The VMS (vehicle management system) has complete functions and stable and reliable performance. It has been applied in the Zhidou electric cars which has achieved good market performance. The system can be used in various kinds of electric vehicles. The VMS and CAN bus net gathers the operating signals and electric control parts information in real time and realizes weak current control, strong current management, operating status control, brake energy recovery, fault protection and instrument display functions through the integrated electric control system.

The EV series BMS (battery management system) utilizes international advanced BMS technology, featuring high precision voltage test, current test, temperature test (compatible with NTC and digital temperature sensor), SOC estimation, SOH estimation, energy estimation, etc. It can accurately monitor the working status of the lithium battery which can avoid the battery being overcharged or overdischarged. The system also has various functions including equalization management , equalization failure diagnosis, hardware wake-up and CAN bus remote wake-up, quick charging and temperature management, open circuit diagnosis, hardware self-checking, and 24-hour battery monitoring function, etc. I can be used in the full series lithium ion battery electric vehicles.