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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12774666 B1

PDFFull Text
Date of Patent:
Oct. 27, 2026

Filed:

Dec. 08, 2021

Multistage-compression energy storage apparatus and method based on carbon dioxide gas-liquid phase change

Applicant:

Exa Energy Technology (Shenzhen) Co. Ltd., Shenzhen, CN;

Inventors:

Yonghui Xie, Shenzhen, CN;

Qin Wang, Shenzhen, CN;

Lei Sun, Shenzhen, CN;

Yuqi Wang, Shenzhen, CN;

Di Zhang, Shenzhen, CN;

Yongliang Guo, Shenzhen, CN;

Xiaoyong Wang, Shenzhen, CN;

Feng Yang, Shenzhen, CN;

Assignee:

EXA ENERGY TECHNOLOGY (SHENZHEN) CO. LTD., Shenzhen, CN;

Attorney:

Ballard Spahr LLP

Primary Examiner:

Craig M Schneider

Int. Cl.
CPC ...
F01K 3/12 (2006.01); F01K 3/14 (2006.01); F01K 25/10 (2006.01);
U.S. Cl.
CPC ...
F01K 3/12 (2013.01); F01K 3/14 (2013.01); F01K 25/103 (2013.01); Y02E 60/14 (2013.01); Y02E 60/16 (2013.01);
Abstract

An energy storage apparatus and method based on carbon dioxide gas-liquid phase change. The energy storage apparatus comprises a gas storage reservoir; a liquid storage tank; an energy storage assembly, provided between the gas storage reservoir and the liquid storage tank, wherein the energy storage assembly comprises a condenser and at least two compression energy storage parts, the compression energy storage parts each comprise a compressor and an energy storage heat exchanger; an energy release assembly, provided between the gas storage reservoir and the liquid storage tank, wherein the energy release assembly comprises an evaporator, an energy release cooler, and at least one expansion energy release part, the expansion energy release part comprises an expander and an energy release heat exchanger; and a heat exchange assembly, comprising a cool storage tank, a heat storage tank, and a heat recovery heat exchanger.

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Xie, Yonghui. (2026). Multistage-compression energy storage apparatus and method based on carbon dioxide gas-liquid phase change (U.S. Patent No. 12774666). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12774666

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