Prismatic Lead Accumulator Fixing Element Shaking Resistance
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Solution Overview
Problem
Existing lead-acid accumulators require thick, heavy housings to withstand severe shaking loads, leading to high material consumption and manufacturing costs due to stringent geometric accuracy requirements for both the housing and plate stack.
Innovation Solution
A fixing element is firmly connected to the housing, surrounding the plate stack in a circumferential direction, and attached to the housing using methods like adhesive bonding or welding, reducing the geometric requirements for the plate stack and increasing shaking resistance while minimizing material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the housing is designed with thick walls to withstand severe shaking loads, then the shaking resistance is improved, but the weight and material consumption increase
Solution Approach 1:
The patent introduces a fixing element as an intermediary component between the plate stack and the housing. This fixing element absorbs and distributes the shaking loads, allowing the housing to have thinner walls while maintaining overall shaking resistance. The fixing element acts as a mediator that protects the plate stack without requiring the housing to be heavily reinforced.
2Strength
If the housing walls are thickened to ensure shaking resistance, then the strength is improved, but the manufacturing cost increases due to higher material consumption
Solution Approach 1:
The fixing element serves as a cost-effective intermediary that provides the necessary shock absorption and load distribution. By using this separate component, the housing can be manufactured with less material, reducing overall manufacturing costs while maintaining shaking resistance.
3Reliability
If the plate stack is manufactured with high geometric accuracy, then the reliability under shaking loads is improved, but the manufacturing cost increases
Solution Approach 1:
The fixing element acts as a buffer that compensates for variations in plate stack geometry. By providing this intermediary component that can accommodate geometric tolerances, the plate stack can be manufactured with lower precision requirements while still maintaining reliable performance under shaking loads.
4Weight of stationary object
If the housing wall thickness is reduced, then the material consumption and weight are decreased, but the shaking resistance deteriorates
Solution Approach 1:
The fixing element compensates for the reduced structural support from thinner housing walls. It provides the necessary mechanical support and shock absorption that would otherwise require thicker housing walls, enabling weight reduction without sacrificing shaking resistance.
5Ease of manufacture
If the geometric requirements for the plate stack are reduced, then the manufacturing cost decreases, but the risk of damage during insertion increases
Solution Approach 1:
The fixing element serves as a protective intermediary during the insertion process. It provides a interface that guides and protects the plate stack, reducing the risk of damage even when geometric tolerances are more relaxed. The fixing element absorbs misalignment stresses that would otherwise damage the plate stack during insertion.
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
This solution enhances shaking resistance and reduces manufacturing costs by allowing thinner housings and easier assembly, minimizing the risk of damage during plate stack insertion and reducing material consumption.
Implementation Method 1
It is particularly advantageous for the fixing element to be adhesively bonded to the housing.
Implementation Method 2
Examples of fixing elements are sealing straps, casings, sheaths having recesses, or meshes. By way of example, fixing elements can be connected to the plate stack by adhesive bonding or welding to the plate stack, looping and/or adhesive bonding to the plate stack.
Data Source
AI summary
The invention relates to an accumulator (10), particularly a prismatic lead accumulator, comprising a housing and (a) at least one stack (29) of plates, (b) which has a plurality of spaced-apart pole plates (14, 16) that are entirely suspended by a fixing element (28) in at least one circumferential direction (U). According to the invention, the fixing element (28) is fixedly connected to the housing (19).