Fan-Shaped Grid Assembly for Lead-Acid Battery Electrodes
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Solution Overview
Problem
Existing grid arrangements for plate-shaped battery electrodes in electrochemical accumulators, particularly lead-acid batteries, require significant amounts of lead, leading to high material and weight costs, while existing solutions fail to optimize electrical conductivity and material usage effectively.
Innovation Solution
A grid arrangement featuring vertically oriented bars angled in a fan shape, with a center of gravity line intersecting the connecting lug at specific distances and angles, optimizing material usage and electrical conductivity by tilting the vertical bars towards the connecting lug, thereby reducing lead usage and enhancing electrical performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If traditional grid arrangements with uniform vertical bars are used, then structural stability is maintained, but lead usage and weight are excessive
Solution Approach 1:
The patent applies asymmetry by arranging vertical bars at different angles rather than uniformly. The vertical bars are positioned at angles α1, α2, α3, etc., relative to the horizontal centerline, creating an asymmetric fan-shaped pattern that optimizes both structural integrity and material reduction. This asymmetric arrangement allows strategic placement of bars to maintain strength while reducing overall lead quantity.
Solution Approach 2:
The patent implements local quality by varying the angular distribution of vertical bars across different regions of the grid. Bars closer to the center have smaller angles while outer bars have larger angles, creating region-specific optimizations. This localized variation in bar orientation allows the structure to maintain stability where needed while minimizing material usage in less critical areas.
2Reliability
If more lead is used in the grid arrangement, then electrical conductivity improves, but weight increases
Solution Approach 1:
The patent changes the geometric parameters of the grid arrangement by varying the angles of vertical bars. By optimizing the angular parameters α1, α2, α3, etc., the design achieves improved electrical conductivity through better current distribution paths while simultaneously reducing the total amount of lead required, thus lowering weight.
Solution Approach 2:
The patent introduces angular variation as an additional design dimension beyond the traditional uniform grid structure. By considering the angular orientation of vertical bars as a variable parameter, the design optimizes both electrical conductivity and weight through three-dimensional spatial arrangement rather than simple two-dimensional planar configuration.
3Quantity of substance
If vertical bars are arranged in a fan shape at different angles, then material usage is optimized, but manufacturing complexity increases
Solution Approach 1:
The patent segments the grid structure into distinct vertical bars positioned at specific angles, allowing each bar to be independently optimized for material efficiency. This segmentation enables precise control over material distribution while maintaining manufacturing feasibility through modular construction approaches.
Data Source
AI summary
The invention relates to a grid arrangement for a plate-shaped battery electrode of an electrochemical accumulator having a frame and a grid arranged thereon, wherein the frame comprises at least one upper frame element having a connecting lug of the battery electrode disposed on its side facing away from the grid, and wherein the grid is at least formed by horizontal bars, which are bars extending substantially horizontally, and vertical bars, which are bars extending substantially vertically, wherein at least some of the vertical bars are arranged at different angles to one another in the shape of a fan. The invention further relates to an accumulator.