FIELD: electrical engineering.
SUBSTANCE: battery is equipped with safety device comprising first metal plate, second metal plate and pressure sensitive conducting film, placed by both metal plates and designed for electric conduction efficiency as specified or higher pressure is applied. First and second metal plates are electrically connected to positive and negative electrodes respectively. Safety device connected to battery prevents cell failure or at least its inflammation or explosion even if battery is affected by external action caused by mechanical pressure, nails, nippers or by external pressure by means of current transfer from battery to safety device and battery discharge before the moment battery is failure under the influence of external action or external pressure.
EFFECT: reduction of battery charged state before failure.
9 cl, 7 dwg, 3 ex8
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