The high temperature solid-liquid phase change thermal energy storage container can combine with alkali metal thermal-electricity direct switch technology and form regenerative alkali metal thermal-electricity direct switch device, it can be used in the diving device under water and serves as motive force source on the spacecraft. 高温固液相变蓄热器可以与碱金属热电直接转换技术相结合构成蓄热式热电直接转换装置,它可用于水下潜器和航天器上作为动力源使用。