Rechargeable Battery Support Plate Insulation Adhesive Segmentation
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Solution Overview
Problem
Lithium ion rechargeable batteries used in automobiles face challenges in safety and reliability during extreme conditions such as puncture and collapse tests, where excessive temperature increase is a concern.
Innovation Solution
A rechargeable battery design featuring a support plate with an insulation layer and adhesive sections to stabilize the plate and prevent excessive heat generation during puncture or collapse, utilizing a thick plate shape and low-resistance conductive materials to ensure quick current consumption and prevent swelling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the support plate is made thick and rigid to prevent case swelling, then structural strength is improved, but heat generation during puncture or collapse increases
Solution Approach 1:
The support plate is divided into multiple sections with different adhesive properties. Adhesive sections are placed at specific locations to provide structural support and prevent case swelling, while non-adhesive sections are positioned to minimize heat generation during puncture or collapse events. This segmentation allows different regions of the support plate to serve different functions simultaneously.
2Stability of the object's composition
If adhesive is applied to the entire insulation plate to stabilize the support plate, then structural stability is improved, but heat generation during puncture or collapse increases
Solution Approach 1:
The insulation plate features non-uniform adhesive distribution with distinct adhesive sections and non-adhesive sections. The adhesive sections provide localized structural stability where needed, while the non-adhesive sections reduce heat generation during safety events. This local quality variation resolves the contradiction between overall structural stability and heat generation.
3Reliability
If the support plate is designed with extensive adhesive coverage to prevent case swelling, then reliability is improved, but the complexity of manufacturing increases
Solution Approach 1:
The adhesive pattern is segmented into discrete adhesive sections rather than continuous coverage. This segmentation simplifies the manufacturing process by reducing adhesive application complexity while maintaining reliability at critical locations. The segmented approach also facilitates quality control and inspection.
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 design enhances safety and reliability by minimizing heat generation and preventing case swelling during puncture or collapse, thereby improving the battery's performance under extreme conditions.
Implementation Method 1
an adhesive section is between the insulation layer and the first conductive plate
Implementation Method 2
utilizing a thick plate shape and low-resistance conductive materials to ensure quick current consumption and prevent swelling
Data Source
AI summary
A rechargeable battery includes a case; an electrode assembly housed in the case, wherein the electrode assembly includes a first electrode, a second electrode and a separator between the first electrode and the second electrode; and a support plate between the electrode assembly and the case, the support plate having a first conductive plate electrically coupled to the electrode assembly; wherein an insulation layer is between the first conductive plate and the electrode assembly and wherein an adhesive section is between the insulation layer and the first conductive plate.