Battery Vent Grid Reinforcement for Fracture-Resistant Terminal Posts
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Solution Overview
Problem
The existing energy storage apparatuses are prone to fracture failure due to the low structural strength of their grid structure, which is susceptible to shaking and impact during use.
Innovation Solution
The energy storage apparatus is designed with a grid structure that separates the through hole into multiple sub-holes, and a connector that covers at least part of these sub-holes, providing structural support and protection against breaking, while allowing gas to escape through the grid holes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a grid structure is used in the lower plastic member, then gas can escape through the grid holes, but the grid strips are thin and have low structural strength, making the energy storage apparatus prone to fracture failure
Solution Approach 1:
The patent introduces a reinforcement structure that acts as an intermediary element, spanning across the grid holes in the lower plastic member. This reinforcement structure provides mechanical support to the thin grid strips, preventing fracture while maintaining the gas escape function through the grid holes.
Solution Approach 2:
The patent employs a composite structure combining the plastic lower plastic member with an additional reinforcement structure (which may be made of different material properties). This composite approach allows the grid structure to maintain both its gas permeability function and enhanced structural strength through the combined properties of the two components.
2Object-generated harmful factors
If the grid strips are made thinner to maintain gas escape functionality, then gas flow is improved, but structural strength decreases and fracture failure becomes more likely
Solution Approach 1:
The reinforcement structure is designed to span across multiple grid holes, segmenting the load distribution. By distributing the mechanical stress across multiple support points and areas, the thin grid strips can maintain their gas escape function without bearing excessive localized stress that would cause fracture.
3Strength
If the grid structure is strengthened by making grid strips thicker, then structural strength improves, but gas escape capability is reduced
Solution Approach 1:
The reinforcement structure serves as a mediator that assumes the load-bearing function, allowing the original grid strips to remain thin and maintain their gas escape capability. The reinforcement structure bridges across the grid holes, providing structural support without blocking the gas flow paths.
Data Source
AI summary
An energy storage apparatus and an electric device are provided in the disclosure. The energy storage apparatus includes an upper cover, a deformation member, a lower plastic member, a terminal post, a connector, and a tab. The lower plastic member is provided with a grid structure at one side of the lower plastic member where the through hole is defined at the fourth surface, and the grid structure separates the through hole into multiple sub-holes. The connector extends from the first connection portion that is connected to the terminal post to the second connection portion that is disposed at one side of the grid structure facing away from the deformation member, and an orthographic projection of the connector on the fourth surface of the lower plastic member covers at least part of the multiple sub-holes.