Film Cell Arrangement with Venting Frame
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Solution Overview
Problem
Conventional battery cell arrangements face challenges in compactly and reliably fixing film cells, ensuring safety against fluid leakage, and efficiently dissipating heat, particularly in tightly packed configurations like those in hybrid or electrical vehicles.
Innovation Solution
A battery cell arrangement featuring a flat cell body with a flexible rim, surrounded by a frame arrangement that includes vent openings for fluid escape, cooling channels for heat dissipation, and a clamping apparatus for secure fixation, using identical frame elements to reduce production costs and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If battery cell arrangements are arranged packed as tightly as possible to save space, then space utilization is improved, but the requirements on support components for fixing and safety increase
Solution Approach 1:
The support structure is divided into multiple frame elements (first frame element, second frame element, third frame element, fourth frame element) that collectively form a frame arrangement. Each frame element provides localized support and fixing functions, distributing the mechanical loads and safety requirements across multiple components rather than concentrating them in a single structure, thereby enabling tight packing while maintaining reliability.
Solution Approach 2:
The frame elements extend in multiple spatial dimensions to surround the cell body on all sides. The first and second frame elements extend in a first direction, while the third and fourth frame elements extend in a second direction perpendicular to the first, creating a three-dimensional support structure that provides comprehensive fixing and safety protection in densely packed configurations.
2Ease of operation
If end faces of cell body are left free for access, then ease of operation is improved, but fluid leakage can damage adjacent components
Solution Approach 1:
The frame elements act as intermediary protective structures between the cell body and the external environment. The first and second frame elements surround the cell body on the long sides, while the third and fourth frame elements surround the end faces, creating a protective barrier that allows access to end faces for operation while preventing fluid leakage from directly damaging adjacent components or battery cell arrangements.
3Reliability
If frame elements surround cell body on all sides, then fixing reliability is improved, but manufacturing complexity increases
Solution Approach 1:
The frame elements are designed with homogeneous characteristics where the first frame element is identical to the second frame element, and the third frame element is identical to the fourth frame element. This homogeneity allows for standardized manufacturing processes and simplifies production, as only two unique frame element designs need to be manufactured and assembled in different orientations to provide complete surrounding protection.
4Ease of manufacture
If identical frame elements are used, then manufacturing cost is reduced, but adaptability to different cell configurations decreases
Solution Approach 1:
While the frame elements themselves are symmetric and identical in pairs, their arrangement and orientation create an asymmetric overall structure that adapts to the specific geometry of the cell body. The first and second frame elements are positioned on opposite long sides, while the third and fourth frame elements are positioned on opposite end faces, with perpendicular orientations that provide universal applicability to different cell configurations without requiring different frame element designs.
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 provides reliable fixation, efficient heat dissipation, and safety against fluid damage, while maintaining compactness and cost-effectiveness, even in densely packed configurations.
Implementation Method 1
cooling channels for heat dissipation
Implementation Method 2
At least one vent opening is provided on a side of the frame arrangement which faces away from the end faces of the cell body, in order to allow fluid, in particular gas, to emerge from the battery cell arrangement in the event of damage
Data Source
AI summary
A battery cell arrangement having a battery cell which is in the form of a film cell and includes a flat cell body with two end faces, a flexible cell rim surrounding the cell body, and two contact sections arranged on a rim side of the battery cell. The battery cell arrangement further has a frame arrangement which includes a first frame element and a second frame element which frames the cell body on all sides on the rim. At least one vent opening is provided on a side of the frame arrangement which faces away from the end faces of the cell body, in order to allow fluid, in particular gas, to emerge from the battery cell arrangement in the event of damage.