Dynamic metal-anode flow battery energy-storage system

Patent metadata

Field	Value
Publication number	US-2019296410-A1
Application number	US-201816119387-A
Country	US
Kind code	A1
Filing date	Aug 31, 2018
Priority date	Mar 23, 2018
Publication date	Sep 26, 2019
Grant date	—

Abstract

A dynamic metal-anode flow battery energy-storage system includes a discharge module, a charging module, and a delivery device. The discharge module includes a plurality of discharge reactants to be oxidized to discharge electric energy. The charging module is electrically connected to the discharge module and includes at least one electrolysis device and at least one removal device. The electrolysis device includes a conductive member which is to be energized with electricity, such that a plurality of electrolysis products having the same material with the discharge reactants are adhered to a surface thereof. The removal device includes a scraper adapted to remove the adhered electrolysis products from the surface of the conductive member. The delivery device is adapted to deliver the electrolysis products into the first electrolyte as the discharge reactants, and deliver the discharged products into the second electrolyte as the electrolysis reactants.

First claim

What is claimed is:

1 . A dynamic metal-anode flow battery energy-storage system, comprising:
a discharge module including at least one metal-air battery which includes a plurality of discharge reactants in a first electrolyte, wherein the discharge reactants react with oxygen in air to form a plurality of discharged products and discharge electric energy; a charging module, being electrically connected to the discharge module and including at least one electrolysis device and at least one removal device, wherein the at least one electrolysis device includes a conductive member and a plurality of electrolysis reactants immersed in a second electrolyte; the electrolysis reactants are electrolyzed to form a plurality of electrolysis products which are adhered to a surface of the conductive member; the electrolysis products and the discharge reactants are of the same material; the at least one removal device includes a scraper adapted to remove the adhered electrolysis products from the surface of the conductive member; and a delivery device adapted to deliver the electrolysis products into the first electrolyte as the discharge reactants, and deliver the discharged products into the second electrolyte as the electrolysis reactants.

2 . The system of claim 1 , further comprising an energy management system, wherein the energy management system is electrically connected to the discharge module, the charging module, and the delivery device; the energy management system is adapted to control the discharge module to output power to a load or the charging module, and control an amount of the discharged products delivered by the delivery device.

3 . The system of claim 2 , wherein the discharge module is electrically connected to the load to form a first path, and the discharge module is electrically connected to the charging module to form a second path; the energy management system includes a sensing unit, a switch unit and a control unit, wherein the sensing unit is electrically connected to the first path to detect a first current and a first voltage on the first path; the switch unit is electrically connected to the second path; the control unit is adapted to control a power output of the discharge module according to a power supply of the discharge module and a power consumption of the load; the control unit controls the switch unit to be turned off or controls the delivery device to increase the amount of the electrolysis product to be delivered to the first electrolyte when the first current and the first voltage detected by the sensing unit is lower than a predetermined value.

4 . The system of claim 1 , wherein the discharge reactants and the electrolysis products include a zinc-based material.

5 . The system of claim 1 , wherein the conductive member has a rod shape; the scrapper has a via hole adapted to be passed through by the conductive member; the scrapper is controllable to move along an axial direction of the conductive member.

6 . The system of claim 1 , further comprising a separation device adapted to separate the discharged products from the first electrolyte, and separate the electrolysis products from the second electrolyte.

7 . The system of claim 6 , further comprising two storage tanks which are respectively adapted to store the discharged products and the electrolysis products separated from the separation device.

8 . The system of claim 6 , further comprising a mixing device adapted to mix the first electrolyte and the electrolysis products separated from the separation device, and mix the second electrolyte and the discharged products separated from the separation device.

9 . The system of claim 8 , further comprising four storage tanks which are respectively adapted to store the first electrolyte, the discharged products, the second electrolyte, and the electrolysis products; the mixing device includes two mixing tanks, wherein one of the mixing tanks communicates with the storage tanks which are stored with the first electrolyte and the electrolysis products; another one of the mixing tanks communicates with the storage tanks which are stored with the second electrolyte and the discharged products.

Assignees

• Univ Nat Taipei Technology

Inventors

• Huang Kuohsiu David
• Hsu Ting-Wei
• Chen Jhang-Cheng
• Yan Wei-Mon

Classifications

• H02J7/50

  acting upon multiple batteries simultaneously or sequentially · CPC title

• H01M8/225 Primary

  Fuel cells in which the fuel is based on materials comprising particulate active material in the form of a suspension, a dispersion, a fluidised bed or a paste · CPC title

• H01M8/04589

  of fuel cell stacks · CPC title

• H01M8/04753

  of fuel cell reactants · CPC title

• H01M16/003

  of fuel cells with other electrochemical devices, e.g. capacitors, electrolysers · CPC title