Battery module and vehicle including the same
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Solution Overview
Problem
Battery modules used in electric vehicles are prone to short circuits and potential ignition or explosion due to external collisions, particularly when terminals on side surfaces of battery cells are compromised.
Innovation Solution
A battery module design featuring a reinforcing member with a metallic second reinforcing cover and a resin first reinforcing cover, connected via insert-injection molding, along with a buffer member and securing members to absorb and distribute impact, preventing direct transmission of external forces to the busbar holder and reducing the risk of short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If battery modules use terminals on side surfaces of battery cells to expand charge and discharge capacity, then charge and discharge capacity is improved, but the battery module becomes vulnerable to short circuits and ignition due to side collision
Solution Approach 1:
The patent applies beforehand cushioning by introducing a buffer member positioned between the side plate and the busbar holder before external impact reaches the terminal. This buffer member absorbs and attenuates collision forces, preventing direct transmission to the terminal and busbar holder, thereby maintaining reliability while preserving the high-capacity terminal configuration
Solution Approach 2:
The patent uses an intermediary approach by introducing a buffer member as a mediator between the external collision source and the critical electrical components (terminal and busbar holder). This intermediary component protects the electrical connection from mechanical impact without requiring changes to the terminal configuration, thus maintaining both power capacity and short circuit prevention
2Reliability
If a reinforcing member is added to prevent short circuits from external collision, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies merging by integrating the reinforcing function into the existing side plate structure. The reinforcing member is coupled to the side plate, combining the protective function with the existing structural component, thereby improving reliability while minimizing the increase in device complexity through functional integration
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 design effectively prevents short circuits by reinforcing the busbar holder and absorbing impact, enhancing structural robustness and stability, thereby ensuring safer operation of battery modules in vehicles.
Implementation Method 1
The buffer member may be elastically deformable
Data Source
AI summary
A battery module and a vehicle including the same are provided. In an example embodiment a battery module includes: a battery cell; a module housing including a side plate facing a side surface of the battery cell; a cell terminal protruding from the battery cell toward the side plate; a busbar holder between the side plate and the battery cell and connected to the cell terminal; and a reinforcing member connected to the busbar holder and reinforcing the busbar holder.