Battery Cell Tray with Volatile Rust Inhibitor for Corrosion Prevention
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Solution Overview
Problem
Cylinder type battery cells are vulnerable to corrosion during transportation and storage due to exposure to high temperature and humidity, with existing desiccants providing inadequate protection.
Innovation Solution
Incorporating a volatile rust inhibitor into the tray members, which vaporizes at room temperature to form a rust-proofing film on the battery cells, including nickel plating on the battery case and cap assembly materials to enhance corrosion prevention, and applying the inhibitor through coating to ensure comprehensive coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a desiccant such as silica gel is included in the package member, then the battery cell is protected from moisture, but the corrosion prevention effect is insufficient
Solution Approach 1:
The patent changes the chemical composition parameter of the anti-corrosive agent from conventional desiccants like silica gel to volatile rust inhibitors containing nitrogen, phosphorus, or sulfur compounds. This parameter change enables the anti-corrosive agent to form protective films through chemical reactions with metal surfaces, significantly improving corrosion prevention effectiveness while maintaining simplicity in implementation
Solution Approach 2:
The volatile rust inhibitor acts as an intermediary substance that mediates between the battery cell metal components and the corrosive environment. It forms a protective film layer on the metal surface, preventing direct contact between corrosive elements and the battery cell, thereby enhancing corrosion protection beyond what conventional desiccants can provide
2Strength
If the battery cell is stored in a tray made of synthetic resin, then the battery cell is protected from physical damage, but corrosion occurs during transportation and storage
Solution Approach 1:
The patent merges the physical protection function of the synthetic resin tray with the corrosion prevention function of the volatile rust inhibitor. The anti-corrosive agent is incorporated into the tray structure, combining mechanical protection and chemical corrosion prevention into a single integrated packaging solution, thereby protecting battery cells from both physical damage and corrosion simultaneously
3Object-affected harmful factors
If nickel plating is applied to the battery case and cap assembly, then corrosion resistance is improved, but manufacturing complexity increases
Solution Approach 1:
The patent employs a disposable volatile rust inhibitor that provides corrosion protection through chemical film formation rather than requiring permanent structural modifications like nickel plating. This approach achieves comparable corrosion resistance with simpler manufacturing processes, as the anti-corrosive agent is applied during normal tray production without additional plating steps
Solution Approach 2:
The patent replaces the mechanical/physical nickel plating process with a chemical approach using volatile rust inhibitors. Instead of applying metal coatings through electroplating or other mechanical processes, the invention uses chemical vapor deposition of protective films, thereby reducing manufacturing complexity while maintaining corrosion resistance
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
Effectively suppresses corrosion on the battery cells by forming a gamma-iron trioxide film, preventing further oxidation and maintaining the structural integrity of the tray members while ensuring stable storage and transportation.
Implementation Method 1
the volatile rust inhibitor is vaporized at room temperature to form a rust-proofing film on the surfaces of the battery cells
Implementation Method 2
the volatile rust inhibitor is vaporized at room temperature to form a rust-proofing film on the surfaces of the battery cells
Implementation Method 3
Effectively suppresses corrosion on the battery cells by forming a gamma-iron trioxide film, preventing further oxidation
Data Source
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AI summary
The present disclosure relates to a battery cell tray, which is a tray configured to accommodate a plurality of cylinder type battery cells in a storage of a first packaging member, including a first tray member having a plate type structure in which a plurality of first recessed portions surrounding one side end portions of the battery cells are formed; and a second tray member having a plate type structure in which a plurality of second recessed portions surrounding the other side end portions facing the one side end portions of the battery cells are formed, and the first and second tray members includes a volatile rust inhibitor which is vaporized at room temperature to form a rust-proofing film on surfaces of the battery cells.