Photovoltaic energy storage high-voltage wiring harness with flame retardant property and preparation method thereof

The invention relates to the technical field of new energy automobile wire harnesses, in particular to a photovoltaic energy storage high-voltage wire harness with flame retardant property and a preparation method thereof. According to the invention, silicon nitride, acetamide aluminum hydroxide ionic liquid and dopamine hydrochloride are used as raw materials to prepare polydopamine-coated aluminum oxide/silicon nitride with excellent insulativity and electromagnetic shielding performance, and the polydopamine-coated aluminum oxide/silicon nitride is applied to a high-voltage wiring harness insulating layer of a new energy automobile; compared with a structure of two insulating layers and one shielding layer of a traditional high-voltage wire harness of the new energy automobile, the high-voltage wire harness manufactured by the manufacturing method has the advantages that the insulating property and the electromagnetic shielding property are ensured, the wire harness structure is greatly simplified, the tec