Electrical Transfer Tab Layout for Balanced Current and Heat Flow
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Solution Overview
Problem
The electrification of automobility poses challenges in safely conducting high power and heat in vehicle networks, particularly due to increased demands on conductive components like cables and transfer tabs, which require high electrical and thermal conductivity, low contact resistances, and effective heat dissipation to prevent overheating and safety hazards.
Innovation Solution
A transfer tab design featuring two connecting flat parts with distinct orientations and geometries, including recesses and conductor sections, to ensure balanced current paths and efficient heat transfer, while maintaining electrical insulation and environmental sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the transfer tab allows a change in the orientation of the contacts to achieve compact wiring, then the wiring compactness is improved, but the current paths have different geometric properties (different lengths) which deteriorates the electrical balance and conductivity uniformity
Solution Approach 1:
The transfer tab employs connecting flat parts with different geometries and orientations tailored to specific connection requirements. Each connecting flat part is designed with specific dimensions, shapes, and orientations to optimize local electrical and thermal properties while maintaining overall compactness. This local customization allows different current paths to have appropriate geometric properties for their specific functions.
Solution Approach 2:
The transfer tab uses asymmetric design where connecting flat parts have different geometries and orientations rather than uniform symmetric structures. This asymmetry allows the transfer tab to accommodate different contact orientations for compact wiring while compensating for path length differences through tailored designs of individual connecting flat parts, thus maintaining electrical balance.
2Productivity
If high currents and voltages are used to charge the accumulator quickly, then the charging speed is improved, but the heat generation from ohmic losses increases which deteriorates thermal safety
Solution Approach 1:
The transfer tab merges electrical conduction and thermal conduction functions into a single integrated component. The same conductive material and structural elements that carry high currents for fast charging also serve as heat dissipation pathways, conducting heat away from critical areas to prevent overheating during high-power charging operations.
Solution Approach 2:
The transfer tab utilizes materials with both high electrical conductivity and high thermal conductivity properties. These composite or multi-functional materials enable the component to efficiently conduct both the high currents required for fast charging and the heat generated from ohmic losses, addressing both charging speed and thermal safety requirements.
3Ease of operation
If the transfer tab connects the energy storage device to the interior of the vehicle, then the electrical connection functionality is improved, but the sealing against environmental influences deteriorates
Solution Approach 1:
The transfer tab design segments the sealing function from the electrical connection function. The transfer tab itself handles electrical connections, while separate sealing elements (such as seals or gaskets integrated with the housing) handle environmental protection. This segmentation allows each component to optimize its specific function without compromising the other.
Solution Approach 2:
The transfer tab acts as an intermediary component between the sealed energy storage device interior and the vehicle interior. It provides electrical connection functionality while working in conjunction with sealing elements to maintain the protective barrier against environmental influences, allowing electrical connectivity without compromising sealing integrity.
4Volume of moving object
If the connecting flat parts have different orientations for compact wiring, then the space utilization is improved, but the manufacturing complexity increases
Solution Approach 1:
The transfer tab is pre-formed during manufacturing with the required complex geometries and orientations of connecting flat parts. By incorporating these features into the base design and manufacturing process (through techniques like stamping, forming, or additive manufacturing), the complexity is handled upfront rather than requiring complex post-assembly operations, thus maintaining ease of manufacture while achieving compact wiring.
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 enhances electrical and thermal conductivity, balances current paths, and prevents overheating, thereby ensuring safe and efficient energy transfer in electric vehicles.
Implementation Method 1
a first connecting flat part (100) and a second connecting flat part (110), each having a first connecting section (102, 112) and a second connecting section (106, 116)
Implementation Method 2
Conductive components must have high electrical and thermal conductivities, as well as high heat capacities. It must also be possible to release large amounts of heat into the environment.
Data Source
AI summary
Electrical transfer tab for high power requirements, allowing a transition between at least two first connecting sections in a first arrangement and second connecting sections in a second arrangement different from the first.