Vehicle Starter Battery Venting Layout for Uniform Cell Gas Pressure
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Solution Overview
Problem
Conventional starter batteries for vehicles face issues with varying gas pressures and compositions across individual cells due to inconsistent vent valve functionality, leading to performance deterioration and potential cell failure, which complicates manufacturing and safety management.
Innovation Solution
A method for producing an energy storage system with a housing that includes partitions allowing fluid connections between cells, reducing the number of active vent valves and using blind closures, with a single active vent valve or two active valves for better gas management and equal cell venting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each battery cell is equipped with a separate vent valve, then gas pressure control is achieved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent combines multiple vent valves into a single common vent valve that serves all battery cells through a shared gas collection space. This merging approach maintains gas pressure control reliability while significantly reducing manufacturing complexity and cost by eliminating the need for multiple separate vent valve installations and adjustments.
Solution Approach 2:
The single common vent valve performs the venting function for all battery cells simultaneously, making it a universal component that serves multiple cells. This multi-functionality reduces the total number of vent valves needed while maintaining effective gas pressure control across all cells through the interconnected gas collection spaces.
2Reliability
If individual vent valves are used in each cell, then gas venting is achieved, but quality consistency deteriorates due to valve variability
Solution Approach 1:
By merging all cell gas spaces into a common interconnected space with a single vent valve, the patent eliminates the variability inherent in multiple individual valves. This ensures uniform gas pressure and composition across all cells, improving quality consistency while maintaining effective gas venting through the shared venting system.
3Reliability
If multiple active vent valves are used, then gas management is achieved, but manufacturing cost increases
Solution Approach 1:
The patent merges multiple venting functions into a single common vent valve, dramatically reducing the number of components that need to be manufactured, installed, and adjusted. This reduces manufacturing cost while maintaining effective gas management through the shared venting system that serves all battery cells.
Solution Approach 2:
Instead of installing multiple expensive active vent valves, the patent uses a single vent valve design that is replicated in function across all cells through the common gas space architecture. This reduces component costs while achieving the same gas management objectives.
4Stability of the object's composition
If separate sealed battery cells are used, then cell independence is achieved, but safety checks become more complex
Solution Approach 1:
The patent merges the gas management systems of all cells into a single common system while maintaining electrical independence. This reduces safety check complexity from multiple individual cell checks to a single unified system check, while preserving cell independence for electrical functions.
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 approach simplifies and cost-reduces the manufacturing process, improves battery quality by ensuring uniform gas pressures and compositions across cells, and enhances safety by reducing the complexity of gas management checks.
Implementation Method 1
a fluid connection is formed between the individual chambers
Implementation Method 2
a (separate) one-way valve that opens whenever the gas pressure in the upper area of the cell space reaches a predetermined or predeterminable opening pressure
Implementation Method 3
a significant amount of oxygen can diffuse toward the negative electrode plates during operation and undergo a recombination reaction to form water
Data Source
Figure 1
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Figure 4~5
AI summary
The invention relates to an energy storage system (100) for a vehicle (200), in particular a starter battery (100) for a vehicle (200), having a plurality of energy storage cells for providing and/or storing electric energy and a housing (40) which has a plurality of wall elements that delimit the interior of the housing (40). The housing (40) is designed to receive the plurality of energy storage cells in the interior of the housing (40). A plurality of separating walls (30) are arranged in the interior of the housing (40) in order to divide the interior of the housing (40) into a plurality of chambers (10), wherein each chamber (10) is designed to receive an energy storage cell. A fluidic connection is formed between the individual chambers (10), and a ventilation valve (20) is arranged on one of the wall elements, preferably a cover element, of the housing (40) in a respective region paired with the corresponding chamber (10). At least one of the ventilation valves (20) is an active ventilation valve (20a), and the remaining ventilation valves (20) are blind closures (20b).