Abstract
In electric vehicle (EV) powertrains, establishing robust electromechanical connections between the inverter and the electric motor's stator busbars (U, V, W phases) is critical. Traditional terminal blocks utilize a fixed-type geometry that cannot account for manufacturing and assembly tolerance variations. This rigidity introduces severe mechanical stress into the busbars, potentially leading to material fatigue, weld failures, and fluid leakage at the inverter’s overmolded housing seals. This proposed solution discloses an innovative, fully isolated floating nut terminal block. By integrating floating threaded subassemblies within a polyphenylene sulfide (PPS) overmolded bracket containing specific hexagonal grooves, the system allows multi-axis movement to absorb position shift and tolerance stack-up.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
"Fully Isolated Floating Nut Terminal Block for 3-Phase High Voltage Systems", Technical Disclosure Commons, (September 02, 2026)
https://www.tdcommons.org/dpubs_series/11559