Energy storage system based on ejector chemical heat pump

The ejector-based chemical heat pump energy storage system utilizes the ejector to recover expansion work and store heat from chemical reactants, solving the problem of low efficiency in heat pump energy storage systems. This achieves efficient electrical energy conversion and stable energy storage, making it suitable for diverse clean energy needs.

CN122359934APending Publication Date: 2026-07-10STATE POWER INVESTMENT CORPORATION RESEARCH INSTITUTE
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
STATE POWER INVESTMENT CORPORATION RESEARCH INSTITUTE
Filing Date
2025-01-09
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing heat pump energy storage systems suffer from large throttling losses and low system efficiency.

Method used

A chemical heat pump energy storage system based on an ejector is adopted, which includes an energy storage circuit, an energy release circuit, a chemical energy storage tank and a working fluid storage tank. The ejector is used to recover the expansion work of the working fluid throttling process, and the heat is stored and released in combination with chemical reactants. The system efficiency is improved through the ejector and heat exchanger.

Benefits of technology

It improves the efficiency of energy storage and system circulation, realizes efficient storage and conversion of electrical energy into thermal energy, combines safety performance and environmental protection characteristics, is suitable for the diversified needs of clean energy, has significant peak shaving and valley filling capabilities, and promotes the stable operation of the power grid.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122359934A_ABST
    Figure CN122359934A_ABST
Patent Text Reader

Abstract

The ejector-based chemical heat pump energy storage system of the present invention includes: an energy storage circuit comprising a first compressor and an ejector, wherein the outlet of the ejector is connected to the inlet of the first compressor via a first pipeline, and the outlet of the first compressor is connected to the ejector cavity of the ejector via a second pipeline; an energy release circuit comprising a second compressor and an expander, wherein the outlet of the second compressor is connected to the inlet of the expander via a fourth pipeline, and the outlet of the expander is connected to the inlet of the second compressor via a fifth pipeline; and a chemical energy storage tank containing chemical reactants, the chemical energy storage tank having an energy storage medium inlet, an energy storage medium outlet, an energy release medium inlet, and an energy release medium outlet. Therefore, the ejector-based chemical heat pump energy storage system according to the present invention facilitates energy storage and improves the efficiency of system circulation.
Need to check novelty before this filing date? Find Prior Art