Abstract:Underwater unmanned underwater vehicle (UUV) has broad application prospects in military, science and technology, economy and other aspects due to its strong flexibility, concealment, high adaptability and other characteristics. The tasks performed by UUVs are becoming more and more complex and require greater autonomous operation capabilities. Its endurance is one of the key technologies that determine its performance, and the power energy of UUVs is a key factor determining the endurance of UUVs. The endurance of UUV is one of the key technologies that determine its performance, and the power source of UUV is the key factor to determine the endurance of UUV. This paper introduces the development, the advantages and disadvantages, and the latest technological progress of UUV energy technology, and discusses the development trend of UUV energy technology.