2012年5月18日星期五

Mobile phone battery heat expansion theory and hazard


Often see the "steak" fever, the steak is just easier to fever fills. General use lithium-powered products (we are here mainly refers to the cell phone) to be used continuously for a long time will be fever, which is also very simple principle, that is, our middle school class school knowledge of physics.

The principle of battery fever

      Phone when in standby power consumption is very small, so put a point current is also small, so put a long time and will not heat. However, the phone call or when playing games, according to the principle of the flow circuit, the battery equivalent load resistance is small, work in a high-current discharge. Let go of part of the electric battery, resistance increases, but the current mobile phone work can not be reduced, then, a considerable part of energy consumption in the internal resistance of the battery, causing the battery to heat the same time, the battery discharge acceleration, the battery usage time will soon be shortened.

The hazards of battery fever

        Under normal circumstances, cell phone batteries slight fever will not have any problem, but long fever will have an impact on the mobile phone, which is mainly manifested in the following three aspects:

        Mobile phone batteries for a long time heat will cause mechanical heat inside the phone, allowing the phone to restart, or to suddenly hang up the phone call.

Mobile phone battery for a long time heat will make the battery itself, increase the heat, if it is sealed (like ordinary models to replace the battery is sealed, like the iPhone's built-in battery is sealed) battery will make the internal air violent swell, causing the battery is like outside, yea, a serious cause explosions.

Mobile phone batteries for a long time to heat will make the phone's internal components to accelerated aging, thus shortening the useful life in fact.

        If the general mobile phone battery is bulging because of heat, we suggest that you change a new, if you really want to continue to use, there are also a relatively simple solution. With your fingers to find the gap of the battery (cell phone batteries on the back near the mobile phone charging electrodes party, go a little soft), using for poke a small hole inside the air ran out on the line

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