Seat heating and ventilating device and control method

Abstract

A seat heating and ventilating device and a control method relate to the field of vehicle heating or ventilating devices. A seat heating and ventilating control circuit of the device controls seat heating and ventilating or only controls seat heating or only controls seat ventilating according to a request. As the seat heating and ventilating control circuit can output two PWM signals, any combination of heating and ventilating can be realized, the seat heating and ventilating control circuit can satisfy the control demands of different configuration models for seat heating and ventilating, and the development of controllers and even finished vehicles is reduced greatly. Meanwhile, the seat heating and ventilating device is reasonable in design, small and light, the device can be arranged according to different models and different configuration requirements of vehicle OEMs, and the development cost of OEMs is greatly reduced.

Description

Technical field [0001] The invention relates to a heating or ventilation device for a vehicle, in particular to a seat heating and ventilation device and a control method. Background technique [0002] In recent years, with the rapid development of my country's automobile industry, the demand for and possession of automobiles has increased year by year, and automobiles will no longer be just a means of transportation for people. In this context, people's requirements for car comfort are also rising. Seat heating and ventilation functions are increasingly appearing in passenger cars of all levels. It is no longer just an exclusive equipment for luxury cars, and now more and more B-class cars and even A-class cars are equipped with seat heating and even ventilation functions. [0003] At present, there are two main ways of heating and ventilating seats: one is the "resistance wire type". This heating method has no module control. The seat is heated by heating the resistance wire, a...

AI Technical Summary

Problems solved by technology

[0003] At present, there are mainly two ways of seat heating and ventilation: one is "resistance wire type", this heating method has no module control, the seat is heated by heating resistance wire, and the heating function is turned off through the physical deformation of special materials. That is, when the material is heated to a certain temperature, it will deform, thereby disconnecting the heating circuit. The biggest disadvantage of this heating method is that simply relying on the physical deformation of the heating material to terminate the heating cannot effectively ensure the stability and safety of heating. There is a risk of fire; the other is "module control", the general seat module simply reads the heating or ventilation switch command through the hard line, and controls the heating pad and ventilation motor through the driver chip inside the module to realize seat heating and ventilation function

Does not have Coding, LIN, CAN network communication functions, cannot read soft switch input, and participate in vehicle network management

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