Vehicle Battery Pack Structure With Shared Module Reinforcement
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Solution Overview
Problem
Existing battery packs face a challenge in maximizing the space for battery cells while maintaining structural rigidity to prevent damage from external impacts, as the use of reinforcing members can reduce available space.
Innovation Solution
A battery pack structure that minimizes the number of reinforcing members by using module fixing bolts, connection support bars, and support bolts to connect adjacent battery modules, while ensuring sufficient structural rigidity through symmetric recessed portions and overlapping end plates, allowing for efficient accommodation of battery cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a plurality of reinforcing members are provided in the battery case to secure structural rigidity, then structural rigidity is improved, but the space for mounting battery cells is reduced
Solution Approach 1:
The connection support bar merges multiple functions: it connects adjacent battery modules, provides structural reinforcement, and serves as a mounting surface for support bolts. By combining these functions into a single integrated component, the design eliminates the need for separate reinforcing members, thereby maximizing battery cell space while maintaining structural rigidity
Solution Approach 2:
The connection support bar performs multiple roles simultaneously: it acts as a connector between modules, a reinforcing element for structural rigidity, and a support structure for fastening. This multi-functionality allows the design to achieve both structural strength and space efficiency without requiring additional dedicated reinforcing members
Data Source
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AI summary
A vehicle battery pack structure includes: a lower case, a plurality of battery modules accommodated in the lower case, an upper case coupled to an upper portion of the lower case and configured to cover a space accommodating the battery modules, and a plurality of module fixing bolts configured to penetrate end plates of the battery modules and fixed to the lower case. The vehicle battery pack structure further includes: a connection support bar disposed on upper sides of the end plates so as to connect the end plates of the battery modules adjacent to each other, and a plurality of support bolts configured to respectively penetrate the upper case and the connection support bar and fixed to the end plates.