太陽能輔助下汽車冷卻恆溫系統之實現

The Development of a Solar-assisted Car Temperature Regulator System

本研究目的是在開發太陽能輔助車內冷卻恆溫系統，利用太陽能電池發電，將其能量轉存於車內鉛蓄電池，以便提供穩定電源，並透過可適性控制系統電路控制致冷晶片，使其冷端可隨設定溫度、太陽能發電量及電池電量調整功率消耗，且熱端冷卻風扇隨預設溫度啟動運轉並控制功率，以達降低整體功率消耗之目的。本文提出之系統能使車輛在停止且未啟動引擎狀態下，利用太陽能降低車內溫度保持舒適，且系統低功耗具設計可以減少鉛蓄電池電量消耗，控制系統可監控車用鉛蓄電池的電量，避免電池過度充電以致電池膨脹漏液或過度放電導致車輛無法發動。本系統採用PSOC 可程式控制晶片及LM35 溫度偵測器完成PWM 可適性調整減少整體系統之功率消耗。

The aim of this paper is to develop a solar-assisted temperature regulator system to regulate the internal temperature of a car. The current system uses solar cells to generate power and stores it in the lead-acid battery of the car so as to provide a stable power supply. It then utilizes adaptive control systems to control the TE cooler and adjust the temperature of the cold junction. It also uses both solar power and battery-generated electricity to regulate the power consumption. In addition, the hot junction controls the fan speed of the cooling fan and its power consumption until the desired temperature is achieved, thus reducing the overall power consumption. Moreover, this system is developed for the purpose of controlling the temperature of a parked car with ignition switched off while using solar power to reduce the temperature and thus maintains a comfortable temperature. Also, the low power consumption design of the system can reduce and efficiently control the power consumption on the lead-acid battery in order to avoid overcharging or discharging the battery that may cause start-up failure. Lastly, the current system uses PSOC programmable control chips, LM35 temperature sensor and PWM to adaptively adjust and reduce the overall power consumption of the system.