Rechargeable Battery Wall Element for Electrolyte Mixing
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Solution Overview
Problem
Conventional rechargeable batteries face challenges in optimizing the function of their wall elements, leading to inefficient electrolyte mixing and potential acid coating issues, especially during movement stress such as in vehicles.
Innovation Solution
A wall element design featuring a combination of upper, lower, and central partition walls that form communicating volumes, allowing for controlled electrolyte flow and mixing, with features like insertion chamfers and openings to prevent damage and ensure effective sealing, and can be inserted into existing battery housings without requiring new molds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional battery housing design is used, then manufacturing is simpler, but electrolyte mixing efficiency deteriorates leading to acid coating issues
Solution Approach 1:
The battery housing is segmented into multiple cavities by intermediate walls, with each cavity containing electrode plates and separators. This segmentation allows for controlled electrolyte distribution and mixing in each compartment while maintaining overall manufacturing simplicity through modular construction.
Solution Approach 2:
A wall element is introduced as an intermediary component between battery cavities. This wall element features openings that control electrolyte flow between cavities, enabling efficient mixing and preventing acid coating without requiring complete redesign of the battery housing structure.
2Productivity
If the battery housing is redesigned for improved electrolyte mixing, then mixing efficiency improves, but manufacturing complexity increases requiring new molds
Solution Approach 1:
The mixing function is extracted from the main battery housing structure and embodied in a separate wall element. This wall element can be produced independently and inserted into existing battery housings, avoiding the need for new molds while achieving improved electrolyte mixing through its specific opening configuration.
Solution Approach 2:
The wall element serves multiple functions: it separates battery cavities, controls electrolyte flow between cavities through its openings, and prevents acid coating. This multi-functionality allows a single component to address multiple issues without proportionally increasing overall device complexity.
3Object-affected harmful factors
If a wall element is inserted to improve electrolyte mixing, then acid coating is reduced, but assembly complexity increases
Solution Approach 1:
The wall element is pre-assembled with the electrode plates and separators within each battery cavity before final housing assembly. This preliminary arrangement ensures proper positioning and reduces assembly complexity, as the wall element with its specific opening pattern is already in place to guide electrolyte flow and prevent acid coating.
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 design enhances electrolyte mixing, reduces acid coating, and allows for efficient operation during movement stress, preventing electrolyte circulation and ensuring that sludge remains at the base, while allowing for easy assembly and cost-effective production.
Implementation Method 1
The wall element is used to mix the electrolytes such that an acid coating is eliminated or at least considerably reduced
Data Source
AI summary
The invention relates to a rechargeable battery comprising a battery housing which has a cell cavity, or several cell cavities separated by dividing walls. One or more of the cell cavities have at least one respective positive and negative electrode, separated from each other by at least one separator, and a liquid electrolyte. One or more of the cell cavities have a respective wall element, which partitions the respective cell cavity into at least two volume chambers which communicate with one another. At least in the lower regions of the volume chambers, a communicating connection between the volume chambers for the liquid electrolytes is provided and in the upper region of the volume chambers, a pressure compensation connection between the volume chambers for assuring equal air pressure in the volume chambers communicating chambers is provided. Also disclosed is a wall element for such a rechargeable battery, and a battery housing.