▎ 摘　　要

NOVELTY - The pack has a battery module (2), a battery management system, a bearing rod (3), a support and an outer shell. The battery module is arranged in a battery cabin cover area. The support is connected with the battery casing. The bearing rod is connected to a battery cabin cover (1). A battery management component is provided in the battery cabin cover area. An outer shell is provided with a composite structure. The composite structure layer is comprised with a wave-absorbing shell layer. A conductive layer is located on an inner surface of the wave-absorbing shell layers and an insulating isolation layer located on a surface of a conductivity layer. USE - The power battery pack is useful in invisible unmanned aerial vehicles, preferably terahertz stealth unmanned aerial vehicles (claimed) e.g. small aircraft and in military vehicle. ADVANTAGE - The shape of the battery pack is continuous without protrusion, which is good for reducing radar scattering area (RCS), and the shell material has excellent broadband wave absorbing capability, so that battery pack has terahertz stealth function. By preparing light, high-strength, broadband wave-absorbing composite material, and combining simple mechanical structure design and compact battery core arrangement scheme, overcomes the problem that the volume, weight and stealth properties in the existing solution are difficult to compromise, realizing the tera hertz stealth of the power battery pack. The battery pack shell has three-layer structure, the surface layer is a bearing wave absorbing layer composed of porous graphene/resin-based composite material and the middle layer is composed of conductive carbon film or conductive aluminum film, the inner layer is an insulating protective layer composed DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the preparation of power battery pack. DESCRIPTION OF DRAWING(S) - The drawing shows the structure schematic diagram of the battery pack. Battery cabin cover (1) Battery module (2) Bearing rod (3)