Lithium ion battery, as a new type of energy storage equipment, has small size, large power density, high individual voltage, low rate of self-discharging and small self-resistance etc. It substitutes the traditional power battery in AGV. Since it will disconnect from the electric power system after charging, it only has to rely on the energy left to finish all tasks, research on power consumption of its protection circuit is especially important. Experiments prove that the power consumption of improved protection board could be reduced by around 50%, efficiently improves the performance of lithium ion battery protection circuit.

Halbach motor is a new type permanent magnet synchronous motor: unique permanent magnet structure makes its magnetic field unilateral and distributed sinusoidal, increases the magnetic density of air gap while decreases the magnetic density of rotor. It helps to raise the power density and efficiency of power, reduces the size of motor and the pulsating torque. The full-digital variable frequency adjustable speed AGV system with halbach motor based on the TMS320F2812 is designed, and its experiment result proves that it performed well and environment-friendly, saving the energy as well.