Battery and electric equipment

The invention discloses a battery and electric equipment. The battery comprises a battery cell body and a protective layer, the battery cell body comprises a metal shell and an electrode assembly arranged in the metal shell, the protective layer is formed on the outer surface of the metal shell, the protective layer comprises a polymer matrix, filler and a functional additive, and the protective layer can be formed through a jet printing process, a transfer printing process, a coating process or a deposition process, the thickness D of the protective layer and the particle size d of the filler meet the condition that d is smaller than or equal to 0.75*D, and the thickness of the protective layer is smaller. The packaging process of the metal shell can be simplified, electrical insulation and corrosion prevention are achieved, the safety, reliability and heat dissipation performance are improved, and the battery capacity can be improved. 本申请公开一种电池及用电设备。电池包括电芯本体和保护层，电芯本体包括金属壳体和内置于金属壳体中的电极组件，保护层形成于金属壳体的外表面上，保护层包