Side-Terminal Battery Module Structure for Busbar Impact Isolation
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Solution Overview
Problem
Battery modules used in electric vehicles are prone to short circuits and explosions due to external collisions, which can occur when terminals on the side surfaces of battery cells are damaged.
Innovation Solution
A battery module design that includes a reinforcing member connected to the busbar holder, comprising a first and second reinforcing cover with different materials for enhanced structural robustness, and a buffer member to absorb impact, along with securing members to stabilize these components within the module housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a busbar holder is disposed between the side plate and the battery cell to connect to the cell terminal, then electrical connection is improved, but the busbar holder becomes vulnerable to external impact causing short circuit
Solution Approach 1:
A reinforcing member is introduced as an intermediary component between the side plate and the busbar holder. This reinforcing member absorbs and distributes external impact forces, preventing direct transmission to the busbar holder while maintaining the electrical connection function.
Solution Approach 2:
The reinforcing member is positioned in advance between the side plate and busbar holder to provide protective cushioning against potential external impacts. This pre-positioned protection prevents damage before it occurs to the vulnerable busbar holder.
2Strength
If the reinforcing member is made with high rigidity materials, then structural strength is improved, but the reinforcing member may transmit excessive impact force to the busbar holder
Solution Approach 1:
The reinforcing member is designed with specific dimensional parameters and material properties that balance rigidity and shock absorption. By optimizing thickness, length, and material selection, the reinforcing member provides structural strength while limiting impact force transmission to acceptable levels.
Solution Approach 2:
The reinforcing member may utilize composite material structures that combine rigid and flexible properties. This allows the reinforcing member to maintain structural integrity and strength while providing shock absorption capabilities to reduce impact force transmission.
3Stability of the object's composition
If multiple securing members are added to stabilize the reinforcing member and buffer member, then structural stability is improved, but device complexity increases
Solution Approach 1:
Multiple securing functions are merged into integrated securing members that simultaneously perform multiple stabilization tasks. The securing members are designed to anchor both the reinforcing member and buffer member in a single structural solution, reducing the total number of separate components.
Solution Approach 2:
The securing members are designed as multi-functional components that provide both mechanical anchoring and structural stabilization. Each securing member serves multiple purposes: fixing the reinforcing member, supporting the buffer member, and maintaining the overall structural integrity.
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
Prevents direct transmission of external impact to the busbar holder, reducing the risk of short circuits and enhancing the structural integrity of the battery module, while the buffer member absorbs impact to minimize load on the reinforcing member.
Implementation Method 1
a buffer member connected to the reinforcing member and absorbing impact applied to the reinforcing member
Data Source
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AI summary
Disclosed is a battery module and a vehicle including the same, and a problem to be solved is to provide a battery module capable of preventing short circuit of battery cells due to external collision and a vehicle including the same. To this end, disclosed in an example embodiment is a battery module that includes: a battery cell; a module housing provided with a side plate facing a side surface of the battery cell; a cell terminal protruding from the battery cell towards the side plate; a busbar holder disposed 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.