Viscosity Measuring System for Electrode Ink
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Solution Overview
Problem
Conventional methods cannot accurately measure the viscosity of electrode ink during manufacturing, as the viscosity changes due to external forces, and traditional sampling methods do not replicate the manufacturing conditions.
Innovation Solution
A viscosity measuring system comprising a tank, flow pathway, external force applying unit, pump, and pressure detection units that simulate manufacturing conditions, allowing continuous measurement of electrode ink viscosity without sampling, by applying external forces and calculating viscosity based on pressure differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a rotary rheometer is used to measure viscosity by sampling electrode ink, then measurement can be performed, but the measurement does not reflect the actual viscosity during manufacturing flow conditions
Solution Approach 1:
The patent creates a simplified flow pathway system that copies the essential characteristics of the manufacturing process (flow, external forces) to measure viscosity under representative conditions without requiring actual manufacturing equipment
Solution Approach 2:
The flow pathway acts as an intermediary between the stationary rheometer measurement and the actual manufacturing process, allowing the electrode ink to flow under controlled conditions that simulate manufacturing while enabling measurement
2Measurement precision
If electrode ink is sampled for viscosity measurement, then viscosity can be measured, but the total amount of flowing electrode ink cannot be assessed
Solution Approach 1:
The flow pathway system serves multiple functions simultaneously: it allows viscosity measurement, assesses the state of the total flowing ink, and simulates manufacturing conditions, rather than just measuring a small sample
3Reliability
If external forces are applied during viscosity measurement, then manufacturing conditions are simulated, but the measurement system becomes more complex
Solution Approach 1:
The patent applies external forces (such as pressure gradients or shear forces) to the electrode ink in the flow pathway to simulate manufacturing conditions, changing the physical parameters to match actual process conditions while keeping the overall system relatively simple
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate measurement of electrode ink viscosity under manufacturing conditions, improving process control and yield by simulating the external forces and flow conditions encountered during electrode manufacturing.
Implementation Method 1
a pump disposed in the flow pathway and configured to be capable of controlling a flow velocity or a flow rate of the electrode ink
Implementation Method 2
a first pressure detection unit disposed in the flow pathway, and configured to detect a pressure of the electrode ink flowing through the flow pathway, a second pressure detection unit disposed in a portion in the flow pathway on a more downstream side than the first pressure detection unit, and configured to detect the pressure of the electrode ink flowing through the flow pathway
Implementation Method 3
a detection processing unit configured to calculate a viscosity of the electrode ink based on the pressure detected by the first pressure detection unit and the pressure detected by the second pressure detection unit
Data Source
AI summary
A viscosity measuring system is equipped with a tank, a flow pathway, an external force applying unit, and a pump. The viscosity measuring system further comprises a first pressure detection unit which detects a pressure of the electrode ink, and a second pressure detection unit which detects the pressure of the electrode ink on a more downstream side than the first pressure detection unit. A detection processing unit calculates a viscosity of the electrode ink based on the pressure detected by the first pressure detection unit and the pressure detected by the second pressure detection unit.