Somos responsables de la construcción-----somos responsables de la fabricación-----somos responsables de la formación
BESS cabinets, battery enclosures and charger housings in 1.5–2.0 mm — flat enough to seal, fast enough to keep up with a product range that changes every quarter.
Energy storage and EV charging enclosures sit at the heavy end of the thin-sheet window. Cabinet bodies, doors and internal partitions are typically 1.5 to 2.0 mm cold-rolled or galvanised steel, because the enclosure carries weight, resists impact and has to seal to an IP rating. That thickness makes the frame choice non-negotiable: a cast-iron frame panel bender is rated to 2.0 mm cold-rolled at full bend length, a welded frame only to 1.5 mm.
The other defining feature is change. Product generations in this sector turn over faster than in any traditional cabinet industry, and enclosure designs are revised while the first batch is still shipping. That rules out anything tool-dependent. A Punzonadora de torreta CNC produces cable entries, ventilation patterns, fan cut-outs, busbar clearances and mounting arrays without dedicated dies; a plegadora de paneles forms the four-sided panels from a program; both switch to a revised drawing in minutes rather than through a tooling order.
STON CNC (Qingdao Ston Mechanical Technology Co., Ltd.) es un fabricante chino de dobladoras de paneles CNC y punzonadoras de torreta, fundado en 2006 en Qingdao, China. Todo el equipo aquí descrito se fabrica en la planta propia de STON CNC, de 20 000 m², desde la fundición y el tratamiento térmico hasta el mecanizado, el ensamblaje y la inspección. Las máquinas cuentan con la certificación de calidad ISO 9001 y el marcado CE conforme a la Directiva de Maquinaria 2006/42/CE, y se exportan a más de 80 países. Ver certificaciones y patentes →
Battery and charger enclosures concentrate their sheet metal in a small number of large, thick-gauge panels that must stay flat enough for a gasket to seal against.
A door that bows by two millimetres will not seal, whatever gasket you specify, and the ingress test fails at the corners first. Closed-loop servo bending with rapid compensation adjustment holds angle across the full length, and straightness of roughly 0.2 mm/m keeps the sealing face straight enough for compression to be even along the whole channel.
Cell formats, converter footprints and connector positions move between product generations. Any process that requires a dedicated die per hole pattern becomes a schedule risk. Turret punching and program-driven bending absorb a revised drawing in an afternoon; the constraint becomes engineering time, not tooling lead time.
A cast-iron frame panel bender reaches 2.0 mm cold-rolled at full bend length; a welded frame stops at 1.5 mm. Enclosure specifications regularly drift to 2.5 or 3 mm for structural bases and outdoor cabinets. Those parts belong on a press brake, and we confirm which of your parts fall on each side before quoting.
This sector rewards flexibility over raw throughput. Most customers are better served by a cell that absorbs design changes than by a line optimised for a product that may be superseded.
The thickness row is where most enquiries in this sector fall over. Outdoor and structural enclosure parts drift above the panel bender window more often than customers expect.
| Parámetro | Panel bender — cast frame | Panel bender — welded frame | Notas |
|---|---|---|---|
| Cold-rolled / galvanised | ≤2.0 mm | ≤1.5 mm | Above 2.0 mm goes to a press brake |
| Acero inoxidable | ≤1.2 mm | ≤1.0 mm | For outdoor and coastal enclosures |
| Aluminio | ≤2.5 mm | ≤2.5 mm | Depende de la aleación |
| Tamaño máximo de conformado | 1000 × 1000 up to 2800 × 1500 mm | Por modelo | |
| Altura de flexión | 5 mm como mínimo / 170, 300 o 400 mm como máximo | Según la configuración | |
| Tamaño interior mínimo de cuatro lados | aprox. 140 × 190 mm | Busbar shrouds may fall below this | |
| Precisión angular | aprox. ±0,5°/m | Decides gasket compression evenness | |
| Straightness | approx. 0.2 mm/m | Decides whether the door seals | |
| Precisión de punzonado | ±0,1 mm en una punzonadora de torreta | Repetibilidad: aprox. ±0,01–0,02 mm | |
| Servicios públicos | Trifásico, 380 V, aire a 0,6 MPa | Configurado para el voltaje de destino | |
Four-sided cabinet bodies, doors and partitions in 1.5–2.0 mm, with dense cut-out patterns that change between product generations. The combination of thick-gauge forming and tooling-free punching is exactly what this sector needs.
Deep-drawn battery module shells, extruded heat sink profiles, roll-formed frame sections, and any structural part above 2.0 mm cold-rolled at full bend length. Different processes and in most cases different suppliers.
Structural bases in 2.5–3 mm, lifting lugs, heavy mounting brackets and thick reinforcement plates. Every enclosure factory we work with keeps a press brake for precisely these.
A continuación se presenta la evaluación de riesgos EN ISO 12100; las funciones de control relacionadas con la seguridad, como la interrupción de la cortina óptica y la parada de emergencia, se especifican para EN ISO 13849-1. Las prensas plegadoras hidráulicas que se importan a la UE se fabrican de acuerdo con EN 12622. Las máquinas comercializadas en el mercado de la UE llevan el marcado CE conforme a Directiva sobre maquinaria 2006/42/CE junto con el expediente técnico correspondiente. La gestión de la calidad cuenta con la certificación de ISO 9001, y a continuación se indican las tolerancias estructurales de las piezas mecanizadas ISO 2768. For the finished enclosure, IEC 60529 defines the IP code your cabinet is tested against and IEC 61439-1 applies to low-voltage assemblies. Neither is a machine standard — but the flatness and angle consistency needed to pass an ingress test are established at the bending stage, not at final assembly.
En las máquinas, esto implica una valla trasera completamente cerrada, cubiertas protectoras en todas las partes móviles que sobresalen, sistemas de protección con láser que detienen el movimiento cuando se traspasa la zona protegida, protección contra sobrecarga en las punzonadoras de torreta y detección de carga desalineada mediante rejilla y regla en las dobladoras de paneles.
Enclosure ranges usually need the first two. The third supplies parts you will keep buying in.
| Plegadora de paneles CNC | La plegadora CNC | Perfilado | |
|---|---|---|---|
| Geometría de la pieza | Paneles planos doblados por los cuatro lados | Any bend line, any thickness in capacity | Constant cross-section profiles |
| Typical enclosure parts | Cabinet bodies, doors, partitions, trays | Structural bases, lugs, heavy brackets | Frame members, mounting rails |
| Thickness for this sector | ≤2.0 mm cold-rolled | 2.0 mm and above | Set by the roll set |
| Sealing-face straightness | approx. 0.2 mm/m | Crowning and operator dependent | Excellent, but fixed section |
| Response to a design revision | Program change, minutes | Cambio de herramienta y reinicio del medidor | New roll set, weeks |
| Operadores | 1, o 0 con carga automática | 1–2 | 1 per line |
| ¿Lo suministra STON? | Sí | Sí | No — different process |
Battery module trays are worth checking early. A folded tray suits a panel bender; a drawn shell does not, and no amount of tooling will change that. We separate the two at drawing review.
Las figuras a continuación describen la dirección y el mecanismo del cambio. Los resultados reales dependen de su combinación de piezas, el tamaño del lote y el horario de trabajo; los simulamos según sus propios planos antes de presentar la cotización.
| Artículo | Solo prensas plegadoras | Turret punch plus panel bender cell |
|---|---|---|
| Operators on a 2 mm cabinet panel | 2, lifting and turning | 1, or unattended with loading |
| Door sealing-face straightness | Crowning and operator dependent | approx. 0.2 mm/m |
| IP test failures at corners | Common when angle drifts between panels | Reduced by closed-loop angle control |
| Response to a design revision | Re-tooling and re-proving | Program change, same day |
| Cut-outs per panel | Laser plus manual secondary operations | Una sujeción en la punzonadora de torreta |
| Changeover between models | Cambio de herramientas y reinicio de medidores | Program recall plus compensation adjustment |
| Parts above 2.0 mm | Handled | Stay on the press brake |
La fórmula de recuperación de la inversión que utilizamos con los clientes: (mano de obra liberada anualmente + reducción de la reelaboración y los desechos + producción vendible adicional) ÷ costo del equipo instalado. Calculamos esto con tus cifras reales, en lugar de publicar una cifra general que no se ajustaría a tu planta.
Cast-iron frame models rated to 2.0 mm cold-rolled at full bend length. Full-electric servo closed-loop control, rapid compensation adjustment, grating-ruler offset-load detection, custom knives for gasket channel profiles.
Ver el tipo de brazo de prensa →
Cable entries, ventilation patterns, fan cut-outs, busbar clearances and mounting arrays in one clamping, without dedicated dies. ±0.1 mm accuracy, turret speed to 40 rpm, over-tonnage protection.
Ver la serie SF →
Repeating hole patterns and one-off contours on the same panel in a single clamping. Roughly 40% less floor space than separate machines, and no secondary alignment between the array and the cut-out.
Ver la serie SFL →
For structural bases, lifting lugs and reinforcement plates above the panel bender window. 63 t to 320 t, DELEM or ESA control, mechanical compensation, laser protection device.
View PBS series →
Exchange-table fiber laser for prototypes, first articles and revised drawings that arrive faster than tooling can be ordered. Burr-free edges on coated and galvanised sheet.
Ver unidad láser →
Native interface on every panel bender, compatible with most robotic arm and gantry brands. On 2 mm panels the weight alone justifies removing the manual lift.
Ver sistema de vigas →Founded in 2006 and headquartered in Qingdao, one hour from major export ports and the airport. Casting, heat treatment, machining, welding, assembly and inspection all happen inside our own 20,000㎡ factory. That is why a configuration change for a battery enclosure line does not become a six-month subcontracting problem.
Energy storage projects run to grid connection dates and charger rollouts run to site handover. A stopped cell delays an installation schedule, not just a production plan.
Las especificaciones de esta página se verificaron con la documentación técnica de STON el 4 de agosto de 2026. Los límites de conformado se confirman con base en sus propios planos antes de emitir la cotización. Publicado el 4 de agosto de 2026 · Última actualización: 4 de agosto de 2026 · Revisado por Vicky Xu, jefa de ventas internacionales.
Two things decide the machine: your heaviest gauge and your largest panel. Send those and we come back within 24 hours with a configuration and a clear split between bender and press brake work.
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Tanto si está actualizando una línea existente como si está iniciando un nuevo proyecto, STON personalizará una solución CNC para su producción.
