一种低电压透明电热膜

Low-voltage transparent electrothermal film

Abstract

The invention discloses a low-voltage transparent electrothermal film, including a transparent base material, a transparent conducting layer and electrodes. The transparent conducting layer is formed on at least one side of the transparent base material; the electrodes are formed by bus bars and inner electrodes, and the inner electrodes extend oppositely from the bus bars to form interdigital electrodes; the bus bars are connected with a positive electrode or a negative electrode of a power supply, so that the two adjacent inner electrodes are opposite in polarity, and in energization, current provided by the positive electrode bus bar flows from the positive inner electrodes into the corresponding negative inner electrodes and finally all converges into the negative electrode bus bar; and the electrodes are located on the transparent conducting layer and is in electrical contact with the transparent conducting layer. The low-voltage transparent electrothermal film is provided with the bus bars and the inner electrodes, an interval of two electrodes is reduced to enable resistance of the transparent conducting layer between the two electrodes to be reduced, thus low voltage can be used to supply power, and normally, the low-voltage transparent electrothermal film can be heated to 90 to 180 DEG C rapidly by adoption of voltage of a lithium battery of everyday use. Two sets of electrodes can be arranged on two sides of graphene, and the inner electrodes of the two sets of electrodes are staggered at a certain distance, thereby further ensuring heating uniformity, and improving heating temperature under the same low voltage.
本发明公开了一种低电压透明电热膜,包括透明基材、透明导电层、电极;透明导电层形成于透明基材的至少一侧;电极由汇流条和内电极构成,内电极由汇流条相向延伸形成叉指电极;汇流条接电源的正极或负极,使得两相邻的内电极极性相反,通电时正极汇流条提供的电流由各正极内电极流入对应负极内电极最终全部汇入负极汇流条;电极位于透明导电层上且与透明导电层电接触。本发明通过汇流条和内电极的设置、减小两电极间的间距使得两电极间的透明导电层的电阻减小,从而可以使用低电压供电,正常可以采用日用的锂电池电压,即可达到迅速加热至90-180℃。可以在石墨烯两面设置两套电极,这两套电极的内电极错开一定距离,这样可进一步保证加热的均匀性,在同样的低电压下提高加热的温度。

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