Pouch Battery Coupling Holes Eliminate Cartridge
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Solution Overview
Problem
The existing secondary battery modules with pouch-type batteries require additional cartridges for fixing batteries to cooling pins, leading to increased module size, complexity in assembly, and higher component counts.
Innovation Solution
A pouch-type secondary battery design featuring a pouch case with coupling holes at the outer peripheral area, including a reinforcing member, allows direct attachment to a cooling pin without a cartridge, using bolts and washers for secure coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cartridge is used to fix pouch-type secondary batteries to a cooling pin, then the coupling strength and reliability are improved, but the device complexity and number of components increase
Solution Approach 1:
The invention extracts and eliminates the cartridge component from the system. Instead of using a separate cartridge to fix the pouch-type secondary battery to the cooling pin, the battery case itself is designed with an integrated fixing structure (protrusion and groove mechanism) that directly couples to the cooling pin, thereby reducing component count while maintaining coupling reliability
Solution Approach 2:
The invention merges the fixing function previously performed by a separate cartridge into the battery case structure itself. The case now includes integrated protrusions and grooves that directly engage with the cooling pin, combining the housing and mounting functions into a single integrated component
2Stability of the object's composition
If a cartridge is used to hold pouch-type secondary batteries, then the assembly is more stable, but the manufacturing cost and assembly process complexity increase
Solution Approach 1:
The cartridge component is completely removed from the assembly process. The battery case is designed with built-in protrusions and grooves that provide inherent stability and positioning when mounted on the cooling pin, eliminating the need for separate holding components and simplifying both manufacturing and assembly
Solution Approach 2:
The battery case structure provides its own stabilization and positioning functions through the integrated protrusion-groove mechanism. The case serves both as the housing for the battery and as the mounting interface, eliminating the need for additional stabilizing components
3Reliability
If additional cartridges are used for coupling batteries to cooling pins, then the coupling reliability is improved, but the module size increases
Solution Approach 1:
The coupling function is merged into the battery case structure itself through integrated protrusions and grooves. This eliminates the need for additional external cartridges or mounting hardware, maintaining coupling reliability while minimizing the overall module volume by using the existing battery case boundaries
Data Source
AI summary
A secondary battery module according to the present disclosure includes a pouch-type secondary battery including an electrode assembly in which a cathode plate and an anode plate are stacked with a separator interposed between the cathode plate and the anode plate, an electrode tab extending from the electrode assembly, and a pouch case to receive the electrode assembly, including an upper pouch and a lower pouch, and having a coupling hole formed at an outer peripheral area passing through in a vertical direction, and a cooling pin coupled with the pouch-type secondary battery by the coupling hole. According to the present disclosure, there is an effect of fixing a plurality of pouch-type secondary batteries to the cooling pin without a cartridge for holding the pouch-type secondary batteries.