Heat-sensitive plastic film and soft package film

Abstract

The invention discloses a heat-sensitive plastic film which comprises a plastic layer and a heat-sensitive material layer made of a heat-sensitive material, the number of the plastic layers is n, andn is a positive integer larger than or equal to 1. The number of the heat-sensitive material layers is 1 to n+1; and when the number of the heat-sensitive material layers is larger than or equal to 2,at least one plastic layer is arranged between every two adjacent heat-sensitive material layers. The invention also discloses a soft package film, which comprises a metal layer, and the thermal sensitive plastic film is compounded on at least one side surface of the metal layer. According to the soft package film, by arranging the heat-sensitive material layer, in the heating process of a soft package battery, a heat-sensitive material absorbs heating heat and converts the heating heat into electric energy, the electric energy can be led out from positive and negative tabs of the soft package battery to supply power outwards, and the technical purpose of increasing battery energy is achieved.

Description

technical field [0001] The invention relates to a film, in particular to a heat-sensitive plastic film and a soft film. Background technique [0002] Heating of lithium batteries is a common phenomenon in daily life. It often occurs in wireless household appliances such as mobile phones and notebook computers that use lithium batteries as power sources. When lithium batteries are discharged, chemical reactions will occur inside the batteries, generating a large amount of heat, resulting in The temperature of the battery increases, so that we will feel the temperature when we touch it with our hands, which is a common phenomenon in most lithium batteries. [0003] The main hazards of heating to lithium batteries are: [0004] 1. Excessive heating of the battery for a long time will cause the temperature of the internal parts to rise and affect the normal operation of the parts; [0005] 2. Long-term heating of the battery will increase the heat of the battery itself. If it ...

AI Technical Summary

Problems solved by technology

[0004] 1. Excessive heating of the battery for a long time will cause the temperature of the internal parts to rise and affect the normal operation of the parts;

[0005] 2. Long-term heating of the battery will increase the heat of the battery itself. If it is a sealed battery, the internal air will expand violently, causing the battery to protrude, and the battery will explode if it is serious;

[0006] 3. Long-term excessive heating of the battery will accelerate the aging process of the product itself and shorten its life

[0007] Some existing lithium batteries are packaged with soft-packed films, which generally contain multiple laminated lithium batteries, so the internal heat generation is relatively large, and the heat dissipation performance of the existing soft-packed films is not good, increasing Safety risks of lithium batteries packaged in soft packages

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