Battery Cell Housing Insulation Using Rolled Adhesive Strips
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Solution Overview
Problem
Existing methods for insulating battery cell housings are costly and difficult to handle due to the need for individually prefabricated sections with recesses, which are expensive to produce and challenging to apply effectively around electrical contact elements.
Innovation Solution
A method using rolled-up strips of insulation material with self-adhesive coating and pre-introduced recesses, which are unrolled and separated to fit around the battery cell, allowing for cost-effective and efficient electrical insulation of regions between the contact element and the insulating layer, with the option to combine sections for complex geometries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If individually prefabricated sections with recesses are used to insulate regions between the contact element and the insulating layer, then effective electrical insulation is achieved, but material costs and device complexity increase significantly
Solution Approach 1:
The insulation system is segmented into two functional parts: a rolled-up insulating layer for general surface insulation and separate insulating sections for targeted insulation of regions between contact elements and the insulating layer. This segmentation allows each part to be optimized for its specific function while maintaining overall simplicity.
Solution Approach 2:
The rolled-up insulating layer serves multiple functions: it provides general electrical insulation for the battery housing surface and can be positioned to partially cover regions near contact elements. This multi-functional approach reduces the need for complex specialized insulation components.
2Adaptability or versatility
If individually prefabricated sections with recesses are produced on substrate materials, then adaptation to specific regions is improved, but material costs increase
Solution Approach 1:
The insulating sections are designed with local quality variations: they have recesses only in the specific areas where contact elements need to be accommodated, while the rest of the section provides continuous insulation. This localized adaptation reduces material usage compared to fully custom-shaped sections.
Solution Approach 2:
The insulating sections are created as simple copies or replicas of the required insulation shape, punched from rolled-up insulating material. This copying approach is much more cost-effective than producing individually prefabricated sections on expensive substrate materials with complex geometries.
3Reliability
If prefabricated sections with enclosed narrow strips are used, then insulation effectiveness is improved, but handling difficulty increases
Solution Approach 1:
The insulating sections are designed with flexible narrow strips that can dynamically adapt to the geometry of the battery housing regions and contact elements. These strips can be bent and shaped during assembly to achieve proper fit, making handling easier compared to rigid enclosed structures.
Solution Approach 2:
The insulating sections are prepared in advance by punching them from rolled-up material with pre-formed recesses, but they are left in a flexible, unenclosed state that allows easy manipulation. This preliminary preparation maintains insulation effectiveness while preserving handling ease during assembly.
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
Significantly reduces material costs and simplifies the insulation process by using continuous rolled-up strips, enabling effective electrical insulation of battery cell regions with reduced handling difficulties and adaptable geometry for various shapes.
Implementation Method 1
a section of an insulation material is adhesively bonded to a region of the battery housing situated between the electrical contact element and the insulating layer
Data Source
AI summary
A method for insulating a battery cell is provided. The battery cell has a battery housing with an electrical contact element for electrically contacting a pole of the battery cell. A portion of the battery housing of the battery cell is provided with an insulating layer, and a section of an insulation material is adhesively bonded to a region of the battery housing situated between the electrical contact element and the insulating layer, and this region of the battery housing is thus electrically insulated. The insulation material is provided as a rolled-up strip, and the section is rolled off from the rolled-up strip and separated before the section is adhesively bonded to the battery housing.