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thermal runaway

   Also found in: Wikipedia 0.01 sec.
thermal runaway
A repeating cycle in which excessive heat causes more heat until the operation ceases or an explosion occurs. For example, lithium ion batteries have been known to exhibit thermal runaway and explode. In germanium-based bipolar transistors, high temperatures cause current to leak. This, in turn, causes the transistor to heat even more and eventually become unstable or self-destruct. Obviously, after thermal runaway appears in new systems, the product is re-engineered to prevent it.
thermal runaway [′thər·məl ′rən·ə‚wā]
(electronics)
A condition that may occur in a power transistor when collector current increases collector junction temperature, reducing collector resistance and allowing a greater current to flow, which, in turn, increases the heating effect.


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Advantages The DOSBAS can isolate any over-heated cell(s) caused by internal short-circuiting via a fuse device, and, it certainly will help prevent the normal cells from the thermal runaway of the system.
Other technologies used include its cell safety technology that uses a heat-resistant insulating layer(2) between the positive and negative electrodes to prevent short circuits and thermal runaway (overheating) which can be caused when foreign particles get mixed into the battery cell.
Because of this feature, a thermal runaway is less likely to occur in case of an internal short-circuit, so the risks of burst and combustion are reduced, according to Toshiba.
 
 
 
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