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How do motor stator busbars reduce electric vehicle (EV) motor weight and assembly time?

DIRECT ANSWER

Motor stator busbars reduce EV motor weight and assembly time by replacing bulky, complex wiring with a compact, lightweight, single-piece design. This streamlined approach minimizes space constraints, facilitates direct connections, and eliminates time-consuming manual wiring errors.

Electric traction motors are the powerhouse behind electric and hybrid vehicles, converting electrical energy into the mechanical force thatโ€™s crucial for propelling the vehicle. Technological advancements in EV traction motors focus on achieving greater efficiency, reduced weight, and increased durability to meet the growing demands of the EV industry. 

ENNOVI has developed a range of products that redefine whatโ€™s possible for EV traction motors, such as the Phase Busbar and Motor Stator Busbar. The Motor Stator Busbar, for instance, connects the stator windings to the power source in a single, lightweight unit, reducing errors and assembly time while improving motor efficiency.

Can Single-Part Integration Significantly Lower Motor Weight?

Our single-part Motor Stator Busbars offer a lightweight, one-piece solution to connect stator windings to their power source. This innovative, compact design minimizes material usage and reduces the weight and size of motors. Furthermore, it simplifies assembly, eliminates wiring errors, and reduces assembly time on the production line, maximizing reliability and delivering reliable connections even in the harshest environments.

How Do Structured Busbars Streamline Assembly and Error-Proofing?

Our single-part Motor Stator Busbars offer a lightweight, one-piece solution that eliminates wiring errors and reduces assembly time on the production line. This innovative, compact design minimizes material usage and reduces the weight and size of motors, delivering reliable connections in demanding operating conditions.

Do Advanced Busbars Successfully Navigate Tight Space Constraints?

Your application brings weight and space constraints. Thatโ€™s why our Phase Busbars deliver enhanced connections in the smallest applications and harshest environments. ENNOVI Phase Busbars can integrate control circuitry directly into the busbar assemblies, increasing functionality while minimizing size, weight, and complexity. 

Customizable to your application, options include laminate magnetic cores, current sensing, gaskets & cured sealants, high-performance plastics, high-performance resin with bushing, and connections to motor stators, inverters, and drive modules.

Does Optimized Electrical Routing Improve Power Transmission?

Motor stator busbars provide a more efficient pathway for electricity, reducing heat build-up and extending the life of the motor. The design incorporates advanced materials that enhance the performance of their busbars, enabling them to withstand the demanding conditions found in hybrid and electric motors. These busbars are also designed to reduce resistance and improve electrical flow, which contributes to more efficient motor operation and ensures the motorโ€™s long-term reliability.

Engineering Leaner and Faster Electric Drive Systems

Integrated motor stator busbars are critical for creating smaller, lighter, and more reliable electric traction systems. Choosing advanced power interfaces enables manufacturers to optimize vehicle range while lowering manufacturing costs. These single-piece solutions provide the efficiency and durability required for next-generation electric mobility.

Contact ENNOVI today to learn more about our motor stator busbars and how they can enhance your motor design.

Have a specific project in mind?

Our application engineers work on BTS and BTP programmes across global EV OEM and Tier-1 projects. Tell us your pack architecture and current profile and we’ll recommend the right bus bar approach.

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Bus Bar Selection Guide

ENNOVIโ€™s full material selection guide for HV bus bars โ€” Al, Cu, laminated, and flexible options with specification data.

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HAVE A SPECIFIC PROJECT?

Speak to an Application Engineer

Our engineers work on BTS and BTP projects across global EV OEM and Tier-1 programmes

Brief details

Portfolio

Power

Products

Bus bars (Al/Cu, laminated, flexible), SealTech, BusMate, HV Connectors, Overmoulded Bus bars

Buyer stage

Manufacturing & Cost Efficiency

Author

ENNOVI

Last updated

June 2026

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