AUTOMOBILE AIR CONDITIONING UNIT, METHOD FOR CONTROLLING SAID AUTOMOBILE AIR CONDITIONING UNIT, AND CONTROLLER FOR SAID AIR CONDITIONING UNIT

A vehicle air-conditioning box is provided, and includes a main air duct (1), an air-conditioning air duct (2), a blower (3), a first heat dissipation structure (4), and a semiconductor refrigeration chip (5). The main air duct (1) is in communication with the air-conditioning air duct (2). The blower (3), the first heat dissipation structure (4), and the semiconductor refrigeration chip (5) are disposed in the main air duct (1). A first end of the semiconductor refrigeration chip (5) is in contact with the first heat dissipation structure (4). A method for controlling a vehicle air-conditioning box, an air conditioner controller, and a vehicle defogging system are further provided.