Composite battery cell, lithium ion battery and electronic equipment

The utility model provides a composite battery cell, a lithium ion battery and electronic equipment. Wherein the composite battery cell comprises a first positive plate, a first composite unit, a second composite unit and a second positive plate which are overlapped in sequence; the first composite unit comprises a first diaphragm, a first negative plate, a second diaphragm and a third positive plate which are overlapped in sequence; the second composite unit comprises a third diaphragm, a second negative plate and a fourth diaphragm which are overlapped in sequence; wherein the first positiveplate comprises a first smooth surface layer and a first coating layer which are positioned on two opposite surfaces of the first positive plate; wherein the first coating layer is overlapped with the first diaphragm, the third positive plate is overlapped with the third diaphragm, the second positive plate comprises a second smooth surface layer and a second coating layer which are positioned ontwo opposite surfaces of