The basic structure of the seat heater is that the lower layer is a non-woven fabric, and the heating wire is arranged on the non-woven fabric. The heating wire is fixed on the non-woven fabric with a fixing belt, which is covered with knitted fabric and made into a shape similar to the heating part of the seat by knitting, and the heating wire is sewn in the seat cover.

In order to improve the comfort of the occupants in the car and control the heating temperature of the seat within a certain range, two temperature controllers are arranged in the seat heating pad:

(1) 50 5℃ off, 30 5℃ on;

(2) Disconnect at 43 5℃ and connect at 23 5℃. The backrest heater is connected to the power supply of the seat cushion heater through the connector, and the power supply of the seat cushion heater is connected to the instrument panel harness through the connector, and then connected to the battery power supply through the seat heating switch, fuse and ignition switch.