The invention discloses a vehicle poison filtering and ventilating device and system and a control method, the vehicle poison filtering and ventilating device comprises a booster fan, an air outlet of the booster fan is connected with a main air inlet pipe, and the main air outlet pipe is communicated with air in a vehicle; the system further comprises a control unit, an overpressure detection unit and an air quality alarm unit, the overpressure detection unit is communicated with air inside the automobile and air outside the automobile and used for monitoring the air pressure of the air inside the automobile and the air pressure of the air outside the automobile, and the air quality alarm unit is communicated with the air outside the automobile and used for monitoring the quality of the air outside the automobile. The booster fan, the overpressure detection unit, the air quality alarm unit, the cleaning ventilation valve and the poison filtering ventilation valve are all connected with the control unit. The system is high in intelligence and integration degree, the ventilation air volume and the in-vehicle overpressure environment can be conveniently adjusted in real time according to the environment outside the vehicle, the filtering absorber is not in the high-air-volume working condition for a long time, the service life of the filtering absorber is prolonged, and the system is simple in structure and convenient to use.

本发明公开了一种车辆滤毒通风装置、系统及控制方法，包括增压风机，其出风口主进气管连接，所述主出气管与车内空气连通；还包括控制单元、超压检测单元、空气质量报警单元，其中，所述超压检测单元分别与车内空气和车外空气相通，用于监测车内空气和车外空气的气压，所述空气质量报警单元与车外空气相通，用于监测车外空气质量；所述增压风机、超压检测单元、空气质量报警单元、清洁通风阀和滤毒通风阀均与控制单元连接。本发明智能化、集成化程度高，通风风量及车内超压环境可方便的根据车外环境实时调节，使过滤吸收器不在长期处于高风量工况下，延长了过滤吸收器的寿命，结构简单，使用方便。