Conductive Wall Section for Sodium-Nickel Chloride Cell
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Solution Overview
Problem
Conventional electrochemical storage devices experience significant ohmic losses and heat production at high current densities, leading to reduced reliability and efficiency, particularly in high-power applications like sodium-nickel chloride cell technology.
Innovation Solution
Incorporating a partly flat, electrically conductive conductor portion with higher surface conductivity than the surrounding wall portion, which is connected to the wall via a surface, to reduce ohmic losses and enhance current conduction in electrochemical storage devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional wall structures are used in electrochemical storage devices, then device simplicity is maintained, but ohmic losses and heat production increase at high current densities
Solution Approach 1:
The patent applies local quality by integrating a conductor portion with higher electrical conductivity specifically at the wall region where high current densities occur. This localized enhancement of electrical conductivity properties reduces ohmic losses and heat generation at critical areas without requiring complete structural redesign of the entire device, thus resolving the contradiction between energy loss reduction and device complexity.
2Productivity
If high current densities are operated to increase power output, then productivity improves, but thermal power loss and heat production increase
Solution Approach 1:
The patent changes the electrical conductivity parameter of the wall structure by incorporating a conductor portion with higher conductivity than the base wall material. This parameter change enables the system to handle higher current densities more efficiently, allowing increased power output while reducing the thermal power loss that would normally accompany high-current operation.
3Reliability
If wall conductivity is increased to reduce ohmic losses, then electrical conduction improves, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent employs composite materials by combining the base wall material with a conductor portion that has superior electrical conductivity. This composite structure achieves improved electrical conduction and reliability while maintaining manufacturability, as the conductor portion can be integrated as a separate component or layer rather than requiring complete material substitution throughout the entire wall structure.
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
This configuration allows for reduced thermal power loss and improved operational efficiency at higher current densities, enabling high-efficiency cell operation and minimizing mechanical stress and maintenance needs in thermal modules.
Implementation Method 1
the wall has an electrically conductive wall portion, which is associated as anode with the anode compartment
Implementation Method 2
the anode compartment is separated from the cathode compartment by an ion-conductive solid electrolyte
Implementation Method 3
the electrode designated as anode is the one which, on discharge of the electrochemical storage device, brings about oxidation of the anode material
Data Source
AI summary
An electrochemical storage device has an anode chamber filled with anode material during operation, and a cathode chamber filled with cathode material. The anode chamber is separated from the cathode chamber by solid body electrolyte guiding ions, and the anode chamber is limited on one side by the solid body electrolyte, on another side by a wall at least partially surrounding the solid body electrolyte. The wall is surrounded by a head part of the device, by a base part arranged opposite the head part and/or by a lateral part arranged between the head and base part. The wall has an electrical conductive wall section as an anode to the anode chamber, an at least partially flat, electrical conductive line section electrically connected to the wall section by a surface, and conductivity per surface of the line section greater than conductivity of the wall per surface of the wall section.