Limited energy supply restricts the exploration of the ocean by underwater profiling platforms.As a clean energy

ocean temperature difference energy provides an effective solution for the energy supply of the profiling platforms.A phase change material(PCM)-based ocean temperature difference energy power generation system is designed to supply power to underwater profiling platforms

and a new temprature difference energy power generation efficiency tracking method based on load matching is proposed.This tracking method establishes a data model based on the data-driven principle

implements load control through the PID algorithm

and ultimately achieves the goal of highly efficient temperature difference power generation.Experimental results show that under the condition of loading 10kg PCM with a volume change rate of 10%

the power generation capacity reaches 1.88Wh per single profile.At this time

the power generation efficiency is 45.4%.When the load control follows the pressure change

the error ratio is within 10%.This tracking method can be implemented by embedding a general-purpose microprocessor chip

providing new ideas for the development of marine new energy for underwater profiling platforms

and facilitating the development of lightweight

versatile ocean temperature difference power generation profiling platforms.