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Redox-Flow Battery for Borehole Applications

IP.com Disclosure Number: IPCOM000245823D
Publication Date: 2016-Apr-12
Document File: 1 page(s) / 8K

Publishing Venue

The IP.com Prior Art Database

Abstract

A rechargeable battery usable in a high temperature borehole environment. The battery utilizes the redox flow principle with two chemical liquid components (electrolytes) separated by a membrane held between two electrodes. While both liquids are circulated by pumps in their respective compartments ions are exchanged through the membrane and a Redox (Reduction - Oxidation) reaction generates a difference in electrical potential between the electrodes. By applying a voltage at the electrodes this process can be reverted and the battery is charged. Alternatively the electrolytes could be replaced by newly "charged" ones. Due to the physical separation of the electrolytes this type of battery is very safe which is of quite some importance in the high temperature downhole environment.

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Title:

Redox-Flow Battery for Borehole Applications

Abstract:

A rechargeable battery usable in a high temperature borehole environment. The battery utilizes the redox flow principle with two chemical liquid components (electrolytes) separated by a membrane held between two electrodes. While both liquids are circulated by pumps in their respective compartments ions are exchanged through the membrane and a Redox (Reduction - Oxidation) reaction generates a difference in electrical potential between the electrodes. By applying a voltage at the electrodes this process can be reverted and the battery is charged. Alternatively the electrolytes could be replaced by newly "charged" ones. Due to the physical separation of the electrolytes this type of battery is very safe which is of quite some importance in the high temperature downhole environment.

Description:

The principle of a redox-flow battery is well known and used in wind and solar energy storage, smart home, and car applications. This idea concentrates on the introduction of a redox-flow battery in a downhole battery sub replacing today's common non- rechargeable lithium battery technology. The benefits are:

- low risk of unwanted chemical reactions (self-heating, etc.) due to the separation of chemical components and by using adequate wide temperature electrolytes.
- the battery can be recharged downhole even in a high temperature environment. - the battery capacity can be quickly recharged on the rig site with...