Device for measuring electrode potential
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Solution Overview
Problem
Conventional methods for measuring electrode potential in three-electrode systems, particularly in cylindrical secondary batteries, face challenges in achieving consistent data and efficiently managing electrolyte usage, leading to significant deviations and excessive electrolyte consumption.
Innovation Solution
A device with specific insertion parts and terminals for a cylindrical secondary battery, including a body part with an insertion part for the battery, a cover part with working and counter electrode terminals, and a reference electrode injection part, utilizing spring parts for secure connections and a transparent observation part to manage electrolyte injection and minimize waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods are used to measure electrode potential by immersing the battery in electrolyte, then the measurement can be performed, but significant deviations occur in measurement data and excessive electrolyte is consumed
Solution Approach 1:
The device divides the measurement system into separate components: a measurement chamber that holds the three-electrode system and a reservoir for electrolyte. This segmentation allows precise control of electrolyte volume in the measurement chamber while maintaining adequate electrolyte supply, thereby improving measurement consistency and reducing overall electrolyte consumption.
Solution Approach 2:
The patent introduces a measurement chamber as an intermediary component between the battery and the electrolyte reservoir. This chamber contains the battery electrodes and provides a controlled environment for electrolyte interaction, enabling consistent measurements with minimal electrolyte volume while the reservoir ensures continuous supply.
2Measurement precision
If the beaded part is cut to access electrodes for measurement, then electrode potential can be measured, but internal short-circuits may occur and data reliability decreases
Solution Approach 1:
The device extracts only the necessary components for measurement (electrodes and electrolyte interface) into a separate measurement chamber, while the battery's beaded part remains intact. This extraction allows electrode access for measurement without cutting the beaded part, preventing internal short-circuits and maintaining data reliability.
3Stability of the object's composition
If a fixed amount of electrolyte is injected into the battery, then the battery structure is maintained, but measurement consistency cannot be achieved due to varying electrolyte levels
Solution Approach 1:
The patent adds a vertical dimension to electrolyte management by separating the electrolyte reservoir from the measurement chamber. This dimensional change allows the battery to maintain its fixed electrolyte content for structural stability, while the measurement chamber receives a controlled, consistent electrolyte volume for reliable measurements.
Data Source
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AI summary
A device for measuring electrode potential according to an embodiment of the present disclosure includes a body part, in which an insertion part, into which a cylindrical secondary battery with a separated beaded partis inserted, is formed on one surface thereof, a cover part covering the one surface of the body part, a working electrode terminal fixed to the body part and connected to a first electrode of the cylindrical secondary battery; and a counter electrode terminal fixed to the body part and connected to a second electrode of the cylindrical secondary battery, wherein the insertion part includes a first insertion part, into which a cap assembly of the cylindrical secondary battery is inserted, a second insertion part, into which a case of the cylindrical secondary battery is inserted, and a third insertion part, into which a first electrode tab of the cylindrical secondary battery is inserted, wherein the second insertion part comprises a case insertion part, into which the case of the cylindrical secondary battery is inserted, and an injection part that extends from the case insertion part to an opening direction of the case of the cylindrical secondary battery and can inject an electrolyte, and wherein a reference electrode terminal is connected to the injection part.