SEMICONDUCTOR REFRIGERATOR, AND SUPPLY VOLTAGE CONTROL METHOD OF SEMICONDUCTOR COOLING PIECE THEREOF

摘要

A semiconductor refrigerator, and a supply voltage control method of a semiconductor cooling piece (502) thereof, the control method comprising: a first data acquisition step (101): collecting hot end temperature (Thot) of the semiconductor cooling piece (502); a hot end safe temperature upper limit checking step (104): checking whether the warm end temperature (Thot) reaches or exceeds the hot end safe temperature upper limit; if yes, then performing the following first step of decreasing to Ukeep (106): decreasing or maintaining the supply voltage of the semiconductor cooling piece (502) to the preset Ukeep; if no, then performing the following step of refrigeration power supply (105): providing the supply voltage for the semiconductor cooling piece (502). The supply voltage control method balances protection and refrigeration effect of the semiconductor cooling piece (502).