Radial Lead Battery Grid Layout for AGM Current Distribution
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Solution Overview
Problem
Existing lead acid batteries, particularly AGM batteries, suffer from drawbacks related to their rectilinear grid patterns, which can lead to premature failure and inefficient power distribution, among other issues.
Innovation Solution
A battery grid composed almost entirely of virgin lead or high purity lead, featuring a radial configuration with a frame and radial grid wires emanating from a point outside the frame boundary, along with horizontal cross wires, optimized for improved current conduction and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a rectilinear grid pattern is used in AGM batteries, then manufacturing is simplified, but the battery suffers from premature failure and inefficient power distribution
Solution Approach 1:
The patent inverts the conventional rectilinear grid pattern by using a radial configuration where grid wires emanate from a central point outside the frame boundary. This inversion creates more uniform current distribution paths and reduces localized stress concentrations, thereby improving battery reliability and service life while maintaining manufacturing feasibility through a single-die punching process
2Device complexity
If a rectilinear grid pattern is used, then grid structure is simple, but power distribution efficiency is reduced
Solution Approach 1:
The patent replaces the straight-line rectilinear grid pattern with curved radial lines that emanate from a central point. This curvature creates more efficient current distribution paths that radiate outward uniformly, improving power distribution efficiency while the overall radial symmetry maintains relative structural simplicity
3Reliability
If different grids are used for positive and negative polarities, then electrical performance is optimized, but manufacturing complexity and cost increase
Solution Approach 1:
The patent creates a universal radial grid design that can be used for both positive and negative polarities. The radial configuration provides optimized electrical performance for both polarities simultaneously, eliminating the need for separate grid designs and enabling manufacturing using a single die, thereby reducing complexity and cost
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 new grid design enhances power distribution, reduces the risk of premature failure, and lowers manufacturing costs by allowing a single die to be used for both positive and negative polarities, while maintaining strength and efficiency.
Implementation Method 1
The lead, lead dioxide and electrolyte cause a chemical reaction that releases electrons, allowing them to flow through conductors to produce electricity
Data Source
AI summary
A grid for an absorbent glass mat lead acid battery is also disclosed. The grid has a frame formed of a top frame element having a current collection lug, a first side frame element, a second side frame element, and a bottom frame element. A plurality of grid wires are arranged in radial configuration within the frame which radial configuration emanates from a radiant point located outside a boundary of the frame. A plurality of horizontal grid wires cross the plurality of grid wires arranged the radial configuration. The grid comprises virgin lead or high purity lead or highly purified secondary lead. An absorbent glass mat lead acid battery is also disclosed.