Electric vehicle (EV) architectures are getting more complex. Electrified powertrains, high-voltage systems, and integrated thermal management all add critical connections that must be installed correctly the first time.
Manuel Martinez
The cost of catching an installation error late in production or after a vehicle has shipped continues to rise.
Assembly confirmation is one of the approaches manufacturers are using to close that gap. The idea is to verify installation the moment it happens, rather than relying on downstream inspection to catch issues that may have already moved through several stages.
In this interview, Manuel Martinez, technical sales engineer with ARaymond, discusses how that shift is playing out across automotive manufacturing and where EV platforms are accelerating demand. The discussion reflects ARaymond’s perspective as a fastening and assembly supplier while focusing on broader trends in quality, traceability, and assembly validation.
Here’s what Martinez has to say…
How is EV complexity changing the verification requirements for assembly?
EV platforms contain more critical connections than conventional vehicles, and the consequences of a mis-installation are larger. A loose fastener in a body panel might create a rattle. A loose high-voltage connection or a misrouted cable can create thermal, electrical, or safety risks that propagate through the rest of the vehicle.
That difference in stakes has manufacturers reconsidering when verification happens. Traditional inspection at end-of-line tests whether the assembled vehicle works. In-process verification tests whether each critical step was performed correctly before the vehicle advances.
For EV platforms, the second approach addresses the underlying risk more directly.
Why is real-time confirmation replacing end-of-line inspection?
The further downstream a defect is caught, the more costly it becomes to fix. An issue identified at end-of-line testing may require disassembly to access and correct. One that reaches the dealership raises costs significantly. One that reaches the customer carries warranty claims, recalls, and the time and resources to investigate the failure.
Assembly confirmation systems use machine vision to verify that a component has been fully installed before the assembly process can continue.
Real-time verification creates a quality gate at the point of installation. The issue is identified before the vehicle moves to the next station, which keeps the correction cost small and prevents the defect from compounding.
What does in-process verification look like in practice?
The principle is that the installation has to be verified at the moment it happens, before the vehicle can advance to the next station. One approach uses machine vision to read a code or feature that is only visible or readable when the component is fully and correctly seated. If the installation isn’t complete, the verification fails and the station flags the issue.
In some line configurations, the conveyor can be set up so it will not advance until verification passes. That creates a hard gate at each critical interface rather than a soft inspection step that can be bypassed under production pressure.
Which EV subsystems benefit most from this kind of verification?
High-voltage cable routing is one of the most important applications. The safety consequences of a routing error are significant, and the verification opportunity exists at the point of installation rather than requiring a separate inspection step.
Busbars and flat cable holders are another. Battery connections, cooling and brake lines, and safety-related electrical interfaces fall in the same category. The common thread is that these are systems where downstream inspection can miss routing or installation errors that are easier to identify during assembly.
How does this kind of verification support quality investigations?
Verification data carries traceability with it. When a component is verified at installation, that event can be precisely logged with the time, the station, and the vehicle identifier.
If a quality issue surfaces months or years later, the investigation can narrow quickly to the specific population of vehicles where that component was installed under the conditions in question. Instead of expanding the scope across an entire model year, manufacturers can isolate the affected population and respond faster.
Assembly confirmation technologies can be integrated into cable-routing and retention systems, helping verify that critical EV connections are installed correctly during assembly.
How does in-process verification change the work on the line?
Traditional bolted assembly involves tools, torque sequences, and repetitive motion. Verification-enabled retention systems can simplify the operation to a push-and-confirm step, which reduces physical strain and lowers operator cognitive load.
Consistency across shifts improves because the verification step performs the same way regardless of who is at the station. Training also becomes simpler because the operator does not need to interpret torque feedback or memorize visual cues for correct installation. The system confirms the result directly.
How does verification connect to sustainability goals?
Every avoided defect is material that does not get scrapped, labor that does not get spent on rework, and a replacement part that does not have to be manufactured. Quality improvement and waste reduction are largely the same conversation viewed from two different angles.
Catching the error at the station, rather than after final assembly, also avoids scrapping the work that went into the vehicle downstream of that step.
Where is assembly confirmation heading over the next five years?
Manufacturers continue to pursue zero-defect production, digital traceability across the line, and safer electrified platforms. In-process verification is likely to become standard practice at critical interfaces rather than an exception applied to specific components.
The broader shift is toward production lines that verify themselves continuously rather than relying on inspection layers at the end.
Filed Under: Featured Contributions, Q&As