Soluble Cell Housing for Uniform Electrolyte in Parallel Batteries
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Solution Overview
Problem
The inconsistency in performance parameters such as capacity, resistance, and voltage among cells connected in parallel affects the overall performance and service life of high-capacity batteries due to varying electrolyte consumption and performance differences.
Innovation Solution
A cell housing with a soluble mechanism that allows electrolyte cavities to communicate without mechanical operation, using materials like ethylene propylene rubber and polymethyl methacrylate that dissolve in electrolyte to create a uniform electrolyte system among cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If cells are connected in parallel to form high-capacity battery, then battery capacity is improved, but performance inconsistency among cells worsens due to varying electrolyte consumption
Solution Approach 1:
The patent merges the electrolyte systems of multiple cells by dissolving the soluble mechanism (made of PMMA or other soluble materials) to create a shared electrolyte reservoir. This allows electrolyte to flow freely between cells, equalizing electrolyte levels and maintaining consistent performance across all cells in the parallel configuration.
Solution Approach 2:
The soluble mechanism acts as a temporary intermediary structure that initially separates cells but later dissolves to enable electrolyte communication. This mediator approach allows the system to transition from isolated cell electrolyte systems to a unified electrolyte system, resolving the consistency issue while maintaining battery capacity.
2Stability of the object's composition
If soluble mechanism is used to communicate electrolyte cavities, then electrolyte uniformity is improved, but device complexity increases due to additional components
Solution Approach 1:
The soluble mechanism is designed as a temporary, disposable component that performs its sealing function during manufacturing and storage, then dissolves automatically when exposed to electrolyte. This short-living structure simplifies the overall device by eliminating the need for complex mechanical valves or pumps to enable electrolyte communication.
Solution Approach 2:
The patent replaces complex mechanical systems (valves, pumps, switches) with a chemical dissolution process. The soluble mechanism automatically transitions from sealed to open state through chemical interaction with electrolyte, eliminating the need for mechanical operation and reducing device complexity.
3Stability of the object's composition
If soluble mechanism seals housing opening, then cell isolation is improved during storage, but manufacturing complexity increases due to soluble material requirements
Solution Approach 1:
The patent utilizes parameter changes in material properties - specifically the transition of the soluble mechanism from insoluble (during manufacturing and storage) to soluble (when exposed to electrolyte). This parameter change allows the same material to provide both isolation during manufacturing and communication during operation, simplifying the manufacturing process while maintaining cell isolation when needed.
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
The soluble mechanism ensures that cells are placed in a uniform electrolyte environment, reducing performance differences and extending the service life of high-capacity batteries by maintaining consistency and stability.
Implementation Method 1
The soluble mechanism is at least partially soluble in an electrolyte... after the soluble base layer is in contact with the electrolyte, the soluble base layer is dissolved
Data Source
AI summary
The disclosure provides a cell housing, a cell, and a high-capacity battery. The cell housing has a soluble mechanism, and an inner cavity of the cell housing is in communication with an exterior after the soluble mechanism is in contact with an electrolyte. The cell housing has a simple housing structure, such that electrolyte cavities of cells can be in communication without mechanical operation, a plurality of cells are in a uniform electrolyte system, and a performance of the battery is improved.