Thermal abnormality detection system and method

A thermal abnormality detection method for determining whether a first heat dissipation system or a second heat dissipation system is abnormal, the method comprising steps of:

• measuring an actual temperature of the first heat dissipation system;
• measuring an actual temperature of the second heat dissipation system;
• setting a reference temperature;
• substituting the reference temperature into a first estimated temperature calculation formula that conforms to the first heat dissipation system to calculate an upper limit temperature of the first heat dissipation system;
• substituting the reference temperature into a second estimated temperature calculation formula that conforms to the second heat dissipation system to calculate an upper limit temperature of the second heat dissipation system;
• setting an error threshold value Error1_level of the first heat dissipation system;
• setting an error threshold value Error2_level of the second heat dissipation system;
• and
• assuming that the difference between the actual temperature of the first heat dissipation system and the upper limit temperature of the first heat dissipation system is d1, and the difference between the actual temperature of the second heat dissipation system and the upper limit temperature of the second heat dissipation system is d2, when a value of d1−d2 is greater than the error threshold value Error1_level, the first heat dissipation system is determined to be abnormal, and when the value of d1−d2 is less than the error threshold value Error2_level, the second heat dissipation system is determined to be abnormal.