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.:
Date of Patent:
Aug. 25, 2026
Filed:
Dec. 08, 2021
Exa Energy Technology (Shenzhen) Co. Ltd., Shenzhen, CN;
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;
EXA ENERGY TECHNOLOGY (SHENZHEN) CO. LTD., Shenzhen, CN;
Abstract
An energy storage device and method based on carbon dioxide gas-liquid phase change. The energy storage device based on carbon dioxide gas-liquid phase change comprises: a gas storage (); a liquid storage tank (); an energy storage assembly (), the energy storage assembly () being arranged between the gas storage () and the liquid storage tank (), and carbon dioxide being changed from a gas state to a liquid state through the energy storage assembly (); an energy release assembly (), the energy release assembly () being arranged between the gas storage () and the liquid storage tank (), and the carbon dioxide being changed from the liquid state to the gas state through the energy release assembly (); a heat exchange assembly (), the energy storage assembly () and the energy release assembly () being both connected to the heat exchange assembly (), and the heat exchange assembly () being capable of transferring some of the energy generated in the energy storage assembly () to the energy release assembly (); and a heat recovery assembly, at least one of energy released when the carbon dioxide is changed from the gas state to the liquid state, energy released when the carbon dioxide is cooled before entering the gas storage (), and energy released when a heat exchange medium is cooled being recovered by the heat recovery assembly and used for evaporation of the carbon dioxide. The device can reduce energy waste in storage and release processes and improve the energy utilization rate.