Electrolyte Injection Pallet With Deformable Inner-Housing Seal
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Solution Overview
Problem
Existing pallets for electrolyte injection in secondary batteries face challenges in ensuring easy insertion and achieving a complete seal, leading to potential electrolyte leakage due to imperfect contact with the battery housing's inner surface.
Innovation Solution
A pallet design featuring a hopper with a sealing member that includes a battery sealing portion with a deformable structure, allowing it to expand outward and conform to the battery's inner surface, and a core protection portion to manage electrolyte flow, ensuring a secure seal and minimizing leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the size of the end of the pallet is increased to improve sealing, then the sealability is improved, but the ease of insertion deteriorates
Solution Approach 1:
The end of the pallet is designed with a deformable sealing structure that can dynamically change its effective sealing diameter. During insertion, the end maintains a smaller effective diameter for easy insertion, and after insertion, it deforms outward to achieve a larger effective diameter for improved sealing contact with the housing inner surface.
Solution Approach 2:
The sealing structure's physical parameters (shape, diameter) are changed from a smaller insertion state to a larger sealing state through deformation. This parameter transformation allows the same component to satisfy both easy insertion and good sealability requirements at different stages of the process.
2Manufacturing precision
If the end of the pallet is made to closely contact the beading portion, then the positioning is improved, but the sealability deteriorates due to surface irregularities
Solution Approach 1:
The sealing structure uses a flexible, deformable material that can conform to the irregular inner surface of the housing. This flexibility allows the sealing surface to adapt to surface imperfections and maintain reliable sealing contact, overcoming the limitation of rigid contact with the beading portion.
Solution Approach 2:
The sealing structure transitions from a rigid positioning state to a flexible sealing state. After initial positioning by the beading portion, the deformable sealing structure expands and conforms to the housing inner surface, ensuring complete sealing contact despite surface irregularities.
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 design facilitates easy insertion and enhances sealability, reducing electrolyte leakage by adapting to the battery's inner surface irregularities and managing electrolyte flow effectively.
Implementation Method 1
the battery sealing portion is configured to come into close contact with the inner surface of the battery housing as an end of the battery sealing portion deforms outwards when pressed towards the battery
Data Source
AI summary
A pallet according to an embodiment of the present disclosure is a pallet for electrolyte injection configured to connect an electrolyte feeder for feeding an electrolyte to an open portion on a side of a housing of a battery, and includes a hopper having a hollow structure; and a sealing member including a hopper coupling portion coupled to the hopper and a battery sealing portion configured to seal the open portion, wherein the battery sealing portion comes into close contact with an inner surface of the housing of the battery.