Cavity Bus Bar Joint for Screwless Connection and Field Uniformity
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Solution Overview
Problem
Conventional bus bar connection methods require a large number of screws and an additional electric field shielding, especially for non-flat bus bars, which increases complexity and reduces efficiency due to the need for end flattening and uneven electric field distribution.
Innovation Solution
A bus bar system with a cavity connection portion that eliminates the need for screw-based connections and additional shielding by using a component within the cavity to couple bus bars, allowing for improved heat dissipation through convection and uniform electric field distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional screw-based connection methods are used for bus bars, then the connection is secure, but a large number of screws are required and the structure becomes complex
Solution Approach 1:
The patent merges multiple connection functions into a single integrated connection component that houses the coupling mechanism within a cavity structure. This single component replaces what would traditionally require multiple screws and associated hardware, achieving secure bus bar connections while significantly reducing the number of separate parts and simplifying the overall connection structure.
2Adaptability or versatility
If non-flat bus bars (e.g., cylindrical) are connected using conventional methods, then connection is possible, but end flattening is required which adds processing steps and time
Solution Approach 1:
The patent segments the connection system into a separate connection component with an internal cavity that receives the bus bar ends. This cavity is specifically designed to accommodate non-flat bus bar shapes (such as cylindrical ends) without requiring them to be flattened. The bus bar ends are inserted into the cavity where they are secured by the coupling mechanism, eliminating the need for end flattening operations while maintaining connection integrity.
3Strength
If screws are used to connect bus bars, then mechanical connection is achieved, but uneven electric field distribution occurs near the bus bar ends
Solution Approach 1:
The patent extracts the coupling mechanism from the traditional external screw connection approach and places it inside a cavity structure. This internal positioning of the coupling within the cavity allows for more uniform electric field distribution near the bus bar ends, as the coupling is shielded and contained within the cavity rather than protruding externally where it would create field inhomogeneities. The connection strength is maintained through the coupling's engagement with the bus bar ends within the cavity.
4Object-affected harmful factors
If additional electric field shielding is added to compensate for uneven electric fields, then electric field uniformity is improved, but the number of parts and device complexity increases
Solution Approach 1:
The connection component with its cavity structure serves multiple functions simultaneously: it provides the mechanical coupling mechanism for securing bus bars, it creates a shielded environment that ensures uniform electric field distribution, and it accommodates various bus bar end shapes without additional processing. This multi-functional design eliminates the need for separate electric field shielding components, as the cavity itself provides the necessary field uniformity while reducing the overall number of parts.
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
This solution reduces the number of parts and assembly time, enhances heat dissipation, and maintains uniform electric field distribution, eliminating the need for extra shielding and end flattening, resulting in a more efficient and reliable bus bar connection.
Implementation Method 1
the hollow cavity of the connection portion allows convection of the fluid within the cavity, thereby improving the heat dissipation performance of the bus bar system
Data Source
AI summary
A bus bar system and an apparatus for bus bar connection. The bus bar system includes a plurality of members, and a component configured to couple the plurality of members to form a connection portion having a cavity. Further, the component is arranged in the cavity such that it is possible to achieve a significant reduction in the number of parts for bus bar connection without requiring a large number of screws or electric field shieldings.