What is the principle of seat heating?
2 Answers
A non-woven fabric with heating wires is arranged under the seat cushion. When the seat heating switch in the car is turned on, the heating wires are electrified, and the seat will generate heat. Generally, a temperature sensor is installed in the electric heating pad to monitor the temperature change of the seat, thereby controlling the power on and off of the heating wires to keep the seat heating temperature within a suitable range: 1. Disconnect at 50±5℃, connect at 30±5℃; 2. Disconnect at 43±5℃, connect at 23±5℃. Especially in the cold northern regions, where the morning temperature is very low, the driver will no longer face a freezing cold seat. Moreover, seat heating poses no safety hazards during use, and the internal materials will not easily short-circuit, break, or age even under harsh conditions. Common misconceptions about seat heating: 1. It does not heat up immediately; the heating temperature can be adjusted, with higher gears corresponding to higher temperatures. 2. Seat heating has temperature settings and does not keep heating indefinitely. 3. Repeated use of seat heating will not damage genuine leather seats.
The principle of seat heating is actually quite interesting, and I've studied it for a while. Simply put, some heating elements are embedded in the seat, usually made of metal alloy resistance wires or thin sheets. When you turn on the switch, current flows from the car battery and passes through these materials, generating heat due to resistance. The whole system also has a thermostat to monitor the temperature. If the set value is too high or too low, it automatically adjusts the current to ensure it doesn't burn or fluctuate between hot and cold. Modern cars with multi-level adjustable settings make this function more flexible. For example, in my car, it can gradually warm up from a low setting until you're satisfied. By the way, this heating function starts much faster than the air conditioning heater—it heats up instantly once the engine is started, making it perfect for those rushed winter mornings. However, be aware that if the wiring ages or water seeps in, it might cause localized heating issues, so it's important to regularly check if the connectors are tight.
