Electric two-wheel/tricycle controller

The utility model discloses an electric two-wheel/tricycle controller which comprises a shell bottom plate, an aluminum substrate and a cover plate, the aluminum substrate is arranged on the shell bottom plate, and a field effect transistor is arranged between the aluminum substrate and the cover plate. According to the electric two-wheel/tricycle controller, the field-effect tubes are flatly laidon the two sides of the PCB, centralized heat dissipation of the field-effect tubes is changed into scattered heat dissipation, heat concentration is avoided, heat transfer loss of the aluminum substrate is reduced compared with that of an aluminum substrate directly passing through the bottom plate of the outer shell, and the electric two-wheel/tricycle controller is matched with an existing vertical 90-degree arrangement mode. The heat dissipation area can be increased to the greatest extent; during production, the process is simple, working hours can be saved, the cost can be reduced, andthe failure rate can be gr