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Granite Falls works · assembly hall 2

A 21700 module leaves the stacker every 34 s, and every tab weld on it is logged against its own force and energy window.

Stations are welded and wired in the Granite Falls hall, then run at production takt in the commissioning bay next door for 96 h before anything is crated. FAT is witnessed here with your cells, SAT on your floor, and our engineers stay through operator training.

Station catalogue Talk to an engineer
21700 · 4680 · prismatic · pouch
Battery module assembly hall with automated stations along a clean production aisle
01 Cell sorting OCV + ACIR probes
02 Tab welding
03 Module stacking
Battery pack assembly line with conveyor pallets and station frames
04 Pack assembly
Cell sorting takt, parts per minute
31 ppm
OCV spread allowed inside one module group
4.2 mV
Cell-to-datum alignment held across a stack
±0.12 mm

Built to your cell drawing

Fixtures are cut to the can dimensions and tab geometry on your print, not to a catalogue format.

Runoff before crating

Every station runs 96 h at takt in the commissioning bay, with the open-issue list closed on paper.

Weld and torque data kept

Force, energy and angle land in the log under the module ID, ready for a warranty question three years out.

Serviceable with plant tools

Sonotrodes, probes and anvils are catalogue parts with published change intervals.

Off the floor

Stations that leave our floor most weeks

Eight builds currently repeating across module and pack projects.

Milestones

Cell drawings in, runoff witnessed, first shift covered

Each milestone carries a date on the order confirmation.

  1. Cell drawing and takt

    Can or pouch dimensions, tab geometry, module print and the parts per minute the station has to hold.

  2. Fixture and recipe study

    Gripper reach, datum scheme, weld schedule and probe layout come back as a drawing set with the price.

  3. Build and 96 h runoff

    Welded, wired, then run at takt in the commissioning bay until the issue list is empty.

  4. SAT and first shift

    Placement, utility checks, alignment, operator training and an engineer on the floor through the first shift.

Line map

Where each station sits on the line

Nine families, listed in the order a cell meets them.

01 Cell Sorting 2 models Cell Sorting 02 Tab Welding 2 models Tab Welding 03 Module Stacking 2 models Module Stacking 04 Pack Assembly 2 models Pack Assembly 05 Testing Systems 2 models Testing Systems 06 Aging & Cycling 2 models Aging & Cycling 07 Enclosure & Sealing 2 models Enclosure & Sealing 08 Thermal Assembly 2 models Thermal Assembly 09 Handling & Logistics 2 models Handling & Logistics

Shop floor

Heard on the module line and in the pack bay

The welder arrived with our joint recipes loaded and the acceptance record in the crate. First shift, first modules, no surprises.
Elena V. Production manager, module assembly
A probe fixture wore mid-quarter and the replacement was on a flight with the drawings updated. That is what support means on a running line.
Marcus T. Maintenance lead, pack plant
Our own technicians service every Voltform station with the plant's standard tools. Nothing needs a vendor laptop on site.
Ingrid S. Plant engineering lead
Frames, fixtures and control cabinets are welded and wired in the same hall

Assembly hall

Frames, fixtures and control cabinets are welded and wired in the same hall

Frames are welded and stress-relieved in bay 1, fixture plates ground and pinned in bay 2, cabinets wired and point-to-point checked in bay 3. Nothing waits on a subcontractor drawing revision.

Safety & testing

Notes

Welds, grading windows and dry-room habits

What our commissioning engineers write up after a ramp.

FAT in our commissioning bay, SAT on your floor, one issue list across both

Acceptance

FAT in our commissioning bay, SAT on your floor, one issue list across both

The bay runs your cells where the project allows, at the takt the order confirmation states. Whatever recipe passes FAT ships as the delivered default, and the same numbered issue list carries into SAT.

Request a quote

Send the cell drawing and the takt you need to hit

Can dimensions, tab geometry, module print and parts per minute. A station list with fixture scope and a price comes back inside one business day.

Start your inquiry