Vehicle Battery Pack Separator Layout for Higher Capacity Density
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Solution Overview
Problem
The increasing demand for longer driving ranges and more electrical equipment in vehicles leads to a need for more powerful battery packs that occupy more space and have complex internal structures, necessitating a more compact and efficient design.
Innovation Solution
A vehicle battery pack design featuring a first and second battery cell with positive and negative electrode terminals oriented towards a separator, which accommodates busbars and forms exhaust channels, utilizing thermal isolation plates and separators to integrate electrical isolation and connection structures, and includes cooling plates and frames for support and coolant distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the battery pack is designed to provide longer driving range and more power, then the electricity capacity increases, but the occupied space and structural complexity increase
Solution Approach 1:
The separator is designed to perform multiple functions simultaneously: it provides electrical isolation between battery cells, serves as a structural support element, and integrates busbar accommodation features. This merging of functions reduces the need for separate components, thereby increasing electricity capacity without proportionally increasing occupied space.
Solution Approach 2:
The separator structure is designed as a multi-functional component that combines electrical insulation, mechanical support, and electrical connection features. By making the separator universal in its functions, the battery pack achieves higher power density without requiring additional dedicated components for each function.
2Power
If the battery pack is designed to provide longer driving range and more power, then the electricity capacity increases, but the structural complexity increases
Solution Approach 1:
The separator integrates multiple structural features including busbar accommodation chambers and support ribs into a single component. This merging reduces the number of separate parts needed in the battery pack, thereby increasing electricity capacity while minimizing the increase in structural complexity.
Solution Approach 2:
The separator is designed as a universal component that handles electrical isolation, mechanical support, and electrical connection tasks. This multi-functionality approach allows the battery pack to achieve higher power output without adding proportional structural complexity.
3Volume of moving object
If the electrode terminals are oriented towards the separator, then the space utilization efficiency improves, but the manufacturing complexity may increase
Solution Approach 1:
The battery cells are designed with asymmetric terminal orientation towards the separator, allowing for more efficient space utilization in the battery pack layout. This asymmetric design enables better packing density while the separator's integrated busbar accommodation features help manage the manufacturing process.
Solution Approach 2:
The separator is pre-designed with integrated busbar accommodation features and structural support elements before assembly. This preliminary action of incorporating multiple features into the separator reduces the complexity of the overall assembly process, offsetting the manufacturing challenges introduced by the asymmetric terminal orientation.
Data Source
AI summary
The present disclosure relates to the field of vehicles and provides a vehicle battery pack and a vehicle having the same. The vehicle battery pack includes a first battery cell, a second battery cell, and a separator located between the first battery cell and the second battery cell. The first battery cell and the second battery cell include positive and negative electrode terminals oriented towards the separator.