Battery Module Adhesive End Sealing for Higher Energy Density
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery modules have large overall weight and low space utilization, leading to reduced energy density due to bulky casings that occupy a significant space.
Innovation Solution
A battery module design that includes a casing with an opening filled by an adhesive block covering the tab side of the cell stack, eliminating the need for additional end plates and reducing weight, while also incorporating a flexible printed circuit board connected to the cell stack through an elastic clamp for improved stability and heat insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bulky casing is used to enclose the battery components, then the structural integrity and protection are improved, but the overall weight increases and space utilization decreases
Solution Approach 1:
The adhesive block serves multiple functions simultaneously: it blocks the opening of the casing, covers and protects the tab side of the cell stack, provides thermal insulation, and forms part of the outer wall structure. This multi-functionality eliminates the need for separate end plates and reduces overall component count and weight.
Solution Approach 2:
The adhesive block is designed as a universal component that performs blocking, covering, insulating, and structural support functions. By making the adhesive block multi-functional, the patent reduces the number of dedicated components needed, thereby reducing weight while maintaining structural integrity.
2Reliability
If a bulky casing is used to enclose the battery components, then the structural integrity and protection are improved, but the space utilization and energy density decrease
Solution Approach 1:
The adhesive block merges the functions of opening blocking, tab coverage, thermal insulation, and outer wall formation into a single component. This consolidation eliminates the volume occupied by separate end plates and mounting structures, improving space utilization within the casing.
Solution Approach 2:
The adhesive block acts as a flexible sealing and insulating element that conforms to the internal geometry of the casing and cell stack. This allows for more efficient use of internal volume compared to rigid end plates, while still providing structural protection.
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 space utilization and energy density by reducing weight and parts, providing thermal protection and heat insulation, and lowering costs without requiring additional components.
Implementation Method 1
The adhesive block is filled at the opening to block the opening and cover the tab side of the cell stack... providing thermal protection and heat insulation
Implementation Method 2
The sampling element includes an elastic clamp connected to the flexible printed circuit board and clamped and fixed onto the tab of the cell stack
Data Source
AI summary
A battery module and a battery pack are provided. The battery module includes a casing having an opening, a cell stack having a tab side and mounted in the casing, and an adhesive block filled at the opening to block the opening. A tab side of the cell stack corresponds to the opening. The adhesive block covers the tab side of the cell stack. An outer wall of the adhesive block forms a portion of an outer wall of the battery module.