280Ah / 314Ah Prismatic Battery Sheet Metal End Plate | SPCC Electrophoresis End Plate for Energy Storage PACK

Product Overview

The performance of a 280Ah / 314Ah prismatic battery sheet metal end plate is settled long before it reaches the PACK line, by the grade of steel it is cut from, the way the blank is drawn, and how much wall thickness survives each bend. This plate starts from 1.2mm SPCC cold rolled steel and carries a tensile strength of >=240Mpa, giving it enough rigidity to hold large-format prismatic cells under compression without bowing, creeping or fatiguing over long charge and discharge cycles.

Forming is where most stamped accessories lose their margin. Here, precision deep drawing and bending leave every transition zone smooth and crack-free: no burrs, no creases, no localised thinning. Residual material thickness stays above 90% of the original gauge across all deformed areas, so mechanical stress spreads through the plate instead of concentrating at one weak line. The finished part measures 174mm (Width) x 188mm (Height) x 19.7mm (Thickness) and locates onto 280Ah and 314Ah cells without shimming. A full integral electrophoresis coating then seals the outer face, the inner holes and the bending corners alike.

Product Features

1.2mm SPCC Cold Rolled Steel Substrate

Industrial-grade SPCC steel at a consistent 1.2mm gauge forms the base of the plate. Its stable tensile strength of >=240Mpa supplies the pressure-bearing capacity that large-capacity cells demand, resisting deformation and extrusion stress as cells expand during cycling.

Crack-Free Drawing and Bend Transitions

Ordinary stamping tends to tear at draw radii. This plate is produced with a mature precision stretch-and-bend process, so bending and stretching areas finish with clean edges, with no cracks, burrs or creases that would otherwise become crack initiation points in service.

Thickness Retention Above 90% in Formed Zones

Wall thickness is measured, not assumed. More than 90% of the raw plate thickness remains after forming, eliminating the local stress concentration that thinning creates and keeping mechanical behaviour uniform from edge to centre.

Geometry Sized for Large-Format Cells, 174 x 188 x 19.7mm

The outline is dedicated to mainstream 280Ah and 314Ah energy storage cells. Tight dimensional tolerance keeps stacking gaps predictable, equalises stress distribution across the module and shortens assembly time on high-volume PACK builds.

Integral Electrophoresis Anti-Corrosion and Insulation Layer

The electrophoresis film is deposited over the entire body, including inner holes and bending corners, rather than sprayed on one face. Coverage this complete lifts insulation performance, weather resistance and oxidation resistance, isolating moisture and dust in outdoor and industrial settings and reducing leakage risk.

Technical Specifications

Application Scope

Because this component is a load path rather than a cosmetic cover, it belongs wherever large prismatic cells are stacked and compressed: industrial and commercial energy storage stations, grid-side storage, off-grid solar storage equipment and high-power backup power systems. In each case the requirement is the same, a plate that keeps its shape under sustained compression while the electrophoresis layer keeps the steel isolated from moisture.

Why Choose Us

Raw Material Screening

Only SPCC steel with verified, stable tensile strength enters production, so the >=240Mpa figure holds batch after batch.

Full-Process Inspection

Stamping, drawing, bending and electrophoresis are each checked, and finished plates pass mechanical and appearance tests.

Forming Discipline

The crack-free process is treated as a specification, not a target, which is why residual thickness stays above 90%.

Batch Stability and Stock

Standard 280Ah and 314Ah plates are held in stock and produced on automated precision lines for large orders.

Custom Geometry

Non-standard sizes, thicknesses and surface treatments can be produced to customer drawings and module designs.

Tags: 280Ah prismatic battery end plate, SPCC electrophoresis end plate, energy storage pack end plate