Abstract: Through real-field tests in high altitude and low altitude areas, and using the air pressure chamber to simulate the air pressure conditions as different altitudes, the heating tests were carried out on the normal working state of hand-held vacuum cleaner and the discharge operation state of power battery. By comparing the test data and combining the working principle of the test sample, the test results are analyzed. The influence of high altitude and low-pressure environmental conditions on the heating of vacuum cleaner and its power battery during operation is explained.

Key words: High altitude, Low pressure, Heating test, Temperature rise, Loads