| 摘要 |
A device for keeping battery pack of portable computer at operable temperature includes a battery pack for supplying power to the portable computer; a thermal sensor installed in the battery pack for sensing a battery temperature; a heating film installed tightly close to the battery pack; and a microprocessor connected to the thermal sensor for receiving the battery temperature sensed by the thermal sensor. When detecting the battery temperature is lower than a first predetermined temperature, the microprocessor enables the battery pack to connect to and supply power to the heating film for heating the battery pack. When detecting the battery temperature is higher than a second predetermined temperature, the microprocessor enables the battery pack to disconnect from the heating film. The first predetermined temperature is lower than a minimum operable temperature and the second predetermined temperature is higher than the first predetermined temperature.
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