Battery Cell Assembly With Wobble Spray Adhesive Bonding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional double-sided tapes used in battery modules have limitations such as fixed application width, high cost, adhesive deterioration, and difficulty in customization, leading to issues like slipping and reduced adhesive strength over time.
Innovation Solution
A battery module using a spray-type adhesive with a wobble pattern applied directly to the battery cells, allowing for customizable application and easy removal during rework, reducing physical scratches and chemical residues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If double-sided tape is used for adhesive application, then adhesive strength is initially sufficient, but adhesive strength deteriorates over time and slipping occurs
Solution Approach 1:
The patent changes the chemical composition and physical state of the adhesive from a pre-formed tape with fixed adhesive properties to a sprayable adhesive that can be applied in controlled patterns. This allows optimization of adhesive parameters for both initial strength and long-term durability, resolving the contradiction between initial adhesion and long-term performance.
Solution Approach 2:
The invention transitions from a static adhesive application (double-sided tape with fixed width and pattern) to a dynamic spray application system that can adapt the adhesive pattern, width, and coverage based on real-time requirements. This dynamic approach allows the adhesive system to maintain optimal performance characteristics throughout its service life.
2Ease of manufacture
If double-sided tape is used, then adhesive application is simple, but customization is restricted and application width is fixed
Solution Approach 1:
The spray-type adhesive system enables dynamic adjustment of application parameters including width, pattern, and coverage area, allowing full customization while maintaining ease of application through automated spray mechanisms.
Solution Approach 2:
The spray adhesive system serves multiple functions: it can apply adhesive in various patterns, widths, and densities, and can be easily removed and reapplied for rework, making it universally adaptable to different manufacturing requirements.
3Ease of manufacture
If double-sided tape is used, then adhesive application is straightforward, but rework is difficult and physical scratches occur
Solution Approach 1:
The spray adhesive is designed to be easily removable and replaceable, functioning as a temporary bonding solution that can be cleanly removed for rework without causing damage, unlike permanent tape adhesives.
Solution Approach 2:
The adhesive properties can be modified through spray parameters and curing conditions to achieve optimal balance between bonding strength and removability, facilitating easy rework when needed.
4Ease of manufacture
If double-sided tape is used, then adhesive application is simple, but unit price is high and profitability deteriorates
Solution Approach 1:
The spray adhesive system allows precise control of adhesive application parameters to optimize material usage, reducing waste and overall material costs compared to fixed-width tape applications.
Solution Approach 2:
The spray system can apply adhesive only where needed in precise patterns, avoiding excessive adhesive application and reducing material consumption while maintaining effective bonding.
5Productivity
If spray-type adhesive with wobble pattern is used, then adhesive application efficiency is improved, but application precision control is required
Solution Approach 1:
The wobble pattern is created through dynamic movement of the spray nozzle, converting a potentially imprecise spray process into a controlled patterned application that improves both efficiency and precision.
Solution Approach 2:
The wobble motion creates a periodic spray pattern that distributes adhesive uniformly across the target area, improving application efficiency while maintaining precise control through rhythmic motion control.
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 spray-type adhesive enables efficient adhesive application directly on the manufacturing line, minimizing rework difficulties and material costs while maintaining adhesive strength and preventing damage to battery cells.
Implementation Method 1
among the plurality of battery cells, the battery cells adjacent to each other are coupled with a first adhesive member on which the spray-type adhesive is cured
Implementation Method 2
a first adhesive member on which the spray-type adhesive is cured
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A battery module according to the embodiment of the present disclosure includes a battery cell stack containing a plurality of battery cells stacked in one direction, and a module frame for housing the battery cell stack, wherein among the plurality of battery cells, the battery cells adjacent to each other are coupled with a first adhesive member on which the spray-type adhesive is cured, and wherein the first adhesive member has at least one wobble pattern that is extended along a direction different from one direction in which the plurality of battery cells are stacked.