Battery separator structure, battery cell and battery

Abstract

The utility model belongs to the battery technical field, concretely relates to a battery diaphragm structure, electric core and battery, the battery diaphragm structure includes base film body, composite coating and liquid guide support layer, base film body is equipped with end section along the height direction, base film body is equipped with at least one coating face along the thickness direction, liquid guide support layer is connected on the coating face, the composite coating includes mutually connected insulating liquid absorption layer and liquid absorption adhesion layer, insulating liquid absorption layer and / or liquid absorption adhesion layer are connected on the side surface of liquid guide support layer away from base film body, and insulating liquid absorption layer and liquid absorption adhesion layer all set up on end section, the utility model can effectively reduce head and tail lithium risk in long cycle process, and improve the stability and security of use.

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