Hermetic Battery Assembly With Dry Gas to Prevent Condensation
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Solution Overview
Problem
The condensation of humidity in battery containers of electric or hybrid vehicles can lead to short circuits due to the accumulation of liquefied water at the bottom, posing a risk as the battery temperature drops.
Innovation Solution
A hermetic battery assembly with an inner volume filled with a gaseous medium comprising dry air and/or inert gas, minimizing humidity and preventing condensation formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery container is made hermetic and filled with dry air and inert gas, then the risk of condensation and short circuits is reduced, but the device complexity increases
Solution Approach 1:
The patent applies the inert atmosphere principle by filling the hermetic battery container with a gaseous medium comprising dry air and/or inert gas. This creates an environment that prevents condensation formation by eliminating moisture, thereby reducing the risk of short circuits while maintaining battery operation. The inert gas displaces humid air that would otherwise condense on cold battery surfaces.
Solution Approach 2:
The patent applies parameter changes by modifying the atmospheric composition within the battery container from ordinary humid air to a controlled mixture of dry air and/or inert gas. This parameter change (from humid to dry atmosphere) fundamentally alters the condensation behavior, preventing water vapor from condensing on the battery surfaces during temperature variations.
2Reliability
If the battery container is made hermetic, then condensation is prevented, but the manufacturing complexity increases
Solution Approach 1:
The patent applies the inert atmosphere principle by filling the hermetic battery container with a gaseous medium comprising dry air and/or inert gas. This creates an environment that prevents condensation formation by eliminating moisture, thereby reducing the risk of short circuits while maintaining battery operation. The inert gas displaces humid air that would otherwise condense on cold battery surfaces.
Solution Approach 2:
The patent applies parameter changes by modifying the atmospheric composition within the battery container from ordinary humid air to a controlled mixture of dry air and/or inert gas. This parameter change (from humid to dry atmosphere) fundamentally alters the condensation behavior, preventing water vapor from condensing on the battery surfaces during temperature variations.
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 use of a dry air and/or inert gas medium within the battery assembly significantly reduces the risk of condensation and subsequent short circuits, ensuring efficient operation and safety by maintaining a low humidity environment.
Implementation Method 1
the humidity of the air naturally present in the battery container tends to condense as the battery temperature drops
Data Source
AI summary
A battery assembly for a motor vehicle is described comprising a case defining an inner volume which is fluidically isolated from the external atmospheric air, and a plurality of batteries arranged in the inner volume. The inner volume contains a gaseous medium comprising dry air and inert gas.