Battery Pack Corner Ribs for Shock Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Battery packs are prone to deformation and disconnection of parts due to external shocks, which can lead to failures such as fire or electrolyte leakage, especially when subjected to impact.
Innovation Solution
The battery pack design incorporates a first and second case with rib units at the corners, featuring ribs with varying thickness and reinforcement ribs, which enhance the coupling force and prevent deformation by engaging coupling grooves and protrusions, thereby reinforcing the structural integrity against external shocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the battery pack uses a simple case structure without additional reinforcement, then the manufacturing cost and device complexity are reduced, but the case becomes prone to deformation and disconnection under external shocks
Solution Approach 1:
The patent applies local quality by adding rib units specifically at the corner regions of the case rather than uniformly reinforcing the entire structure. These rib units concentrate structural strength at the most vulnerable locations (corners) while keeping the rest of the case structure simple, thus improving coupling force without proportionally increasing device complexity
Solution Approach 2:
The rib units are pre-formed as integral parts of the case structure during manufacturing, creating reinforcement features before the case is assembled. This preliminary action ensures that the coupling force is already built into the structure, preventing deformation before external shocks occur rather than requiring additional corrective measures
2Stability of the object's composition
If the battery pack uses a simple case structure without reinforcement, then the manufacturing process is simplified, but the case is prone to deformation under external shocks
Solution Approach 1:
The rib units are localized at corner regions where structural support is most needed, providing targeted reinforcement that maintains structural integrity without requiring complex manufacturing processes for the entire case. This localized approach allows standard manufacturing techniques to be used for the majority of the case while adding simple reinforcement features only where necessary
3Reliability
If the battery pack case lacks corner reinforcement, then the device complexity is reduced, but the case becomes vulnerable to deformation and disconnection during external shocks
Solution Approach 1:
The rib units provide localized reinforcement at corner regions, which are the most vulnerable points during external shocks. This targeted approach improves reliability by strengthening exactly where needed without adding complex structures throughout the entire case, thus minimizing the increase in device complexity while maximizing shock resistance
Solution Approach 2:
The rib units act as pre-positioned structural cushions at the corners, ready to absorb and distribute impact forces before they can cause deformation or disconnection. This beforehand reinforcement ensures the case maintains its integrity during external shocks without requiring active response mechanisms
Data Source
AI summary
A battery pack having a case configured to prevent deformation. The battery pack includes a plurality of bare cells, a circuit module electrically connected to the plurality of bare cells, and a case accommodating the plurality of bare cells and the circuit module. The case includes a first case having one side opened to accommodate the plurality of bare cells and the circuit module and a second case covering the opened one side of the first case. The first case has a first planar part that is a bottom surface on which the plurality of bare cells are mounted, and first case side parts bent from the first planar part and extending toward the second case. The first case has corners formed by connecting neighboring first case side parts. A first rib unit is formed at inside of at least one of the corners.