High-Voltage Battery Partition Wall for Thermal Vent Gas Isolation
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Solution Overview
Problem
In electrically operated vehicles, high-voltage batteries face a challenge where thermal events cause hot exhaust gas to impair the functionality of electronic components due to exposure, leading to temporary or permanent reduction in functionality.
Innovation Solution
A partition wall is introduced to separate the degassing space from the component compartment, with an intermediate floor extending horizontally between the housing cover and cell top, featuring an exhaust gas passage and sealing elements to direct hot exhaust gas into a degassing chamber, preventing it from reaching the electronic components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a degassing space is provided for hot exhaust gas flow from damaged battery cells, then thermal event safety is improved, but electronic components are exposed to hot exhaust gas leading to functionality reduction
Solution Approach 1:
The housing interior is divided into separate compartments using a partition wall. The partition wall creates distinct spaces: a battery cell compartment, a component compartment for electronic components, and a degassing space for hot exhaust gas. This segmentation prevents hot exhaust gas from reaching electronic components while maintaining thermal event safety pathways.
Solution Approach 2:
The partition wall acts as an intermediary barrier between the degassing space and the component compartment. It physically separates the hot exhaust gas flow path from the electronic components, allowing the degassing space to function safely without exposing sensitive components to thermal hazards.
2Object-affected harmful factors
If a partition wall is introduced to separate degassing space from component compartment, then protection of electronic components is improved, but device complexity increases
Solution Approach 1:
The partition wall serves multiple functions simultaneously: it separates the degassing space from the component compartment to protect electronics, provides structural support for the intermediate floor, and can be integrated with existing housing structures. This multi-functionality reduces the need for additional separate protective components.
Solution Approach 2:
The partition wall is implemented as a horizontal intermediate floor extending in the horizontal device plane between the housing cover and the cell top. This horizontal arrangement in the vertical dimension allows easy retrofitting of existing battery designs without requiring complex lateral modifications to the battery cell arrangement.
3Reliability
If an intermediate floor with exhaust gas passage is used, then sealing effectiveness is improved, but manufacturing complexity increases
Solution Approach 1:
The exhaust gas passage is integrated directly into the intermediate floor structure. The opening edge of the exhaust gas passage is supported on the cell top, combining the sealing function with the structural support function of the intermediate floor. This integration eliminates the need for separate sealing components and simplifies manufacturing.
Solution Approach 2:
A sealing element is introduced as an intermediary component between the opening edge of the exhaust gas passage and the cell top. This sealing element enhances the seal between the degassing space and component compartment while maintaining a simple structural implementation that can be easily manufactured and assembled.
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 ensures the functionality of electronic components remains intact during thermal events by isolating them from hot exhaust gas, allowing for efficient assembly and operation of high-voltage batteries with improved sealing and pressure equalization.
Implementation Method 1
a partition wall which separates the degassing space from the component compartment. The partition wall ensures in an advantageous manner that the hot exhaust gas does not interact with the electronic component
Implementation Method 2
the opening edge of the exhaust gas passage can be supported on the cell top with the interposition of a sealing element, by means of which the sealing effect between the degassing space and the component compartment can be increased
Data Source
AI summary
A high-voltage battery for an electrically operated vehicle, the battery housing of which has a housing cover and a housing lower part which delimit a housing interior which is divided into at least one battery cell compartment equipped with battery cells and at least one component compartment for electronic components. A degassing space is formed between a battery cell top of the battery cells and the housing cover, into which space hot exhaust gas flows during a thermal event in one of the battery cells from an exhaust gas outlet of the damaged battery cell. The high-voltage battery has a partition wall which separates the degassing space from the component compartment.