Pouch Battery Cell Assembly With Uniform Adhesive Stacking
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Solution Overview
Problem
Existing battery module assembly methods for pouch-type secondary batteries lack mechanical strength and uniform bonding, leading to quality issues and electrical connection disruptions due to external vibrations.
Innovation Solution
A system comprising a battery cell supply unit, transfer unit, and adhesion unit that stacks and bonds pouch-type secondary batteries using a precise adhesive application system, ensuring uniform adhesion and mechanical stability through a combination of loading frames, height adjustment, barcode recognition, vacuum transfer, and controlled adhesive application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If separate coupling members are used to bond pouch-type secondary batteries, then mechanical strength and protection from external impacts is improved, but device complexity and manufacturing difficulty increases
Solution Approach 1:
The patent extracts the bonding function from separate coupling members and integrates it into the battery cell structure itself through edge overlapping and direct bonding. This eliminates the need for additional coupling components while maintaining mechanical strength and impact protection.
Solution Approach 2:
The patent merges the structural support function and bonding function into a single integrated system where battery cell edges overlap and bond directly. This combines multiple functions (mechanical support, bonding, impact resistance) into one unified structure, reducing overall device complexity.
2Ease of manufacture
If battery cells are stacked by applying surface pressure with overlapping edges, then ease of manufacture is improved, but bonding uniformity and product quality deteriorates
Solution Approach 1:
The patent replaces the simple surface pressure application method with a more sophisticated bonding system that uses localized pressure application through bonding members. This substitution maintains ease of manufacture while achieving uniform bonding through controlled pressure distribution and specialized bonding structures.
3Device complexity
If battery cells are bonded only at edges or with non-uniform bonding, then device complexity is reduced, but reliability and electrical connection stability deteriorates under external vibration
Solution Approach 1:
The patent applies local quality by concentrating bonding force at specific edge locations through overlapping structures and bonding members. This localized bonding approach ensures critical electrical connections are securely fixed while maintaining overall system simplicity and avoiding uniform complex bonding across entire surfaces.
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 system ensures uniform adhesive application, enhancing product quality, reducing production inefficiencies, and improving mechanical strength by maintaining consistent bonding across battery cells, thereby improving marketability and production efficiency.
Implementation Method 1
a transfer unit configured to adsorb and transfer the battery cell from the battery cell supply unit
Data Source
AI summary
A system for assembling a battery module includes a battery cell supply unit, a transfer unit, and a battery cell adhesion unit, where the battery cell supply unit is configured to stack a plurality of battery cells each being formed by packaging of a negative electrode plate having a negative electrode terminal, a positive electrode plate having a positive electrode terminal, and a separator interposed between the negative electrode plate and positive electrode plate, by an exterior member, the transfer unit is configured to adsorb and transfer the battery cell from the battery cell supply unit, and the battery cell adhesion unit is configured to apply an adhesive to an adhesion surface of the battery cell transferred by the transfer unit, and to conjoin the battery cells while stacking the battery cells in stacking device such that the adhesion surfaces of the battery cells face a preset direction.