Battery Pack Lead Shock Absorbing Unit Design
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Solution Overview
Problem
Conventional battery packs face damage to welded connection portions due to external shock or vibration, compromising their durability.
Innovation Solution
Incorporating a shock absorbing unit with multiple bent portions and a buffer space into the leads connecting battery cells, which protrude in opposite directions to absorb and minimize shock or vibration, thereby protecting the welded connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If leads are rigidly connected to battery cells, then electrical connection is stable, but welded connection portions are damaged by shock or vibration
Solution Approach 1:
The patent applies beforehand cushioning by incorporating a shock-absorbing unit with bent portions into the lead structure before the welded connection is subjected to shock or vibration. The bent portions are pre-formed to create elastic deformation zones that will absorb impact energy during operation, protecting the welded connection portion from damage while maintaining electrical connectivity.
2Reliability
If shock absorbing unit is added to the lead structure, then durability against shock is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the lead into distinct functional segments: a rigid portion for electrical connection, a shock-absorbing unit with bent portions for impact protection, and connection portions for welding. This segmentation allows each part to perform its specific function optimally while keeping the overall structure manageable and manufacturable.
Solution Approach 2:
The patent applies curvature by forming bent portions in the shock-absorbing unit of the lead. These curved or bent sections provide elastic deformation capability to absorb shock and vibration energy, transforming the rigid linear structure into a more resilient form that can withstand mechanical stresses without compromising electrical connectivity.
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 solution effectively reduces damage to the welded connection portions of the battery pack leads, enhancing their durability and resilience against external shocks and vibrations.
Implementation Method 1
each of the leads is formed with a welded connection portion and a shock absorbing unit bent between the welded connection portion and each of the battery cells
Data Source
AI summary
The battery pack according to the present invention includes a plurality of battery cells generating an electric current to which leads are connected in order to supply the generated electric current. At least two of the leads of the battery cells are welded in the plurality of battery cells. A shock absorbing unit is formed bent between the welded connection portion and the battery cell of each of the leads. Therefore, it is possible to minimize damage to the connection portions of the leads caused by external vibration or shock, and to improve the durability of the leads.