12M bus is including vehicle controller, integrated controller, 2-speed AMT powertrain. The integrated design of the integrated controller integrates the motor controller on the basis of meeting the needs of 10-12M buses for power distribution, oil and gas pump motor control, and low-voltage power consumption of the whole vehicle; the smaller permanent magnet motor matches the 2-speed AMT, the motor The integrated design with the transmission housing meets the needs of lightweight.