Supercharge Your Innovation With Domain-Expert AI Agents!

Redox flow battery system and cell stack

A battery pack and battery technology, applied in battery pack components, fuel cell grouping, fuel cells, etc., can solve problems such as pitting corrosion, reduction in electrical efficiency of redox system induction, etc., to reduce water transfer imbalance and overcome imbalance The effect of water transfer

Inactive Publication Date: 2004-11-03
SQUIRREL HLDG
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0034] Shunt currents in the manifolds of the battery pack can cause severe pitting corrosion phenomena on the (half-cell) discharge surface, even if no corrosion is induced, can degrade the overall inductive electrical efficiency of the redox system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Redox flow battery system and cell stack
  • Redox flow battery system and cell stack
  • Redox flow battery system and cell stack

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0080] exist figure 1 A schematic depiction of a typical redox flow battery system operating in recirculation mode. In the figure, only the unit battery pack 1 of a plurality of bipolar batteries assembled in a filter press structure is shown. Of course, a high-capacity device may include multiple battery packs or accumulators electrically connected in series and / or parallel.

[0081] The respective circuits of the positive half-cell electrolyte and the negative half-cell electrolyte are schematically depicted in the figure. In the illustrated case of recirculation mode operation, the positive half-cell electrolyte circuit includes storage tank 2, pump 3, transfer line 10, inlet manifold 4 and outlet manifold 5, and return line 11, inlet manifold 4 and outlet Manifold 5 is used to distribute the electrolyte of the respective positive half-cell flow compartments, indicated by the respective symbols in circles.

[0082] The negative half-cell electrolyte circuit is completely...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A redox flow battery composed of a plurality of cells in electrical series defined by a stacked and repetitive arrangement of a conductive intercell separator having a generally bipolar function, a positive electrode, an ion exchange membrane, a negative electrode and another conductive intercell separator, is operated by flowing a positive half-cell electrolyte containing reducible and oxidizable ions of a first redox couple through the compartments containing the positive electrodes and a negative half-cell electrolyte containing reducible and oxidizable ions of a second redox couple through the compartments containing the negative electrodes in cascade in a counter or equi-current mode. The difference of cell voltage between the first and the last cell of the stack is sensibly reduced and by-pass currents are substantially eliminated thus resulting in an increased overall faradic efficiency. A cell stack architecture provided with ducting for implementing the two counter current cascaded flows of the positive and negative electrolytes is described. The alternated used of cationic and anionic membranes compensate for unbalanced water transport through the membranes.

Description

technical field [0001] The present invention relates generally to reusable electrochemical energy storage by redox flow battery systems, and more particularly to vanadium redox secondary batteries. Background technique [0002] Electrochemical systems have long been considered ideal energy conversion systems due to their theoretically high efficiency. Secondary batteries in particular are considered to be a very attractive option for energy storage systems. Load balancing and peaking for power generation, distribution, and consumption exist everywhere, and secondary batteries can provide a very effective solution. [0003] In secondary batteries, so-called redox flow batteries or simply redox (battery) batteries employ the solution of storing energy; the battery hardware simply provides for parallel reduction and oxidation during both modes of operation, i.e. during charging and discharging processes. Appropriate support for (redox) half-cell reactions. [0004] The use o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01M8/04H01M8/18H01M50/77
CPCY02E60/528H01M2/40H01M8/188H01M8/04186Y02E60/50Y02E60/10H01M50/77H01M8/20H01M8/24
Inventor 阿尔伯特·皮勒格里巴里·M·布勒曼
Owner SQUIRREL HLDG
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com