Battery Pack Housing With Hollow Frame for Rigidity and Gas Venting
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Solution Overview
Problem
Conventional battery pack housings are structurally fragile and lack sufficient rigidity, posing a risk in applications where they are exposed to high temperatures and gas generation during battery cell combustion.
Innovation Solution
A battery pack housing design featuring a hollow frame structure with a thermally deformable material filled inside, providing enhanced rigidity and a venting passage for gases generated during combustion, while maintaining mechanical integrity and preventing foreign substance infiltration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a hollow structure is used as battery pack housing, then gas venting passage is provided, but structural rigidity is insufficient
Solution Approach 1:
The patent applies composite materials by combining a thermally deformable material with a frame structure. The thermally deformable material is filled within the frame to create a composite construction that provides both structural rigidity and gas venting capability. This composite approach allows the housing to maintain strength while incorporating the hollow structure's venting function.
Solution Approach 2:
The patent utilizes parameter changes through the thermally deformable material that changes its physical properties in response to temperature variations. When exposed to heat from battery combustion, the material deforms to create or expand gas venting passages, thereby adapting the structural parameters dynamically to balance rigidity and venting requirements.
2Strength
If thermally deformable material is filled inside the frame, then rigidity is enhanced, but complexity of structure increases
Solution Approach 1:
The patent merges multiple functions into a single integrated structure. The frame and thermally deformable material are combined to simultaneously provide structural support and gas venting capabilities. This merging eliminates the need for separate reinforcement elements, thereby reducing overall structural complexity while achieving enhanced rigidity.
Solution Approach 2:
The thermally deformable material serves multiple functions: it acts as a structural filler to enhance rigidity, a thermal response element to create venting passages when heated, and a sealing material to maintain gas tightness when cool. This multi-functionality reduces the need for additional components, simplifying the overall structure.
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 solution enhances the structural rigidity of the battery pack housing, ensures safe venting of high-temperature gases, and maintains mechanical properties and gas tightness, effectively addressing the fragility issues of conventional designs.
Implementation Method 1
at least a portion of one or more of the side beam and the base portion may include a frame of a hollow structure and a thermally deformable material filled inside the frame
Data Source
AI summary
A battery pack housing according to an embodiment of the present disclosure includes: a base portion; a side beam formed on an outer circumference of the base portion; and an accommodating portion defined as an internal space surrounded by the base portion and the side beam, wherein at least a portion of one or more of the side beam and the base portion includes a frame of a hollow structure and a thermally deformable material filled inside the frame.