Serpentine Battery Cooling Plate

Generate a complete, production-ready Python script using CadQuery (or OpenSCAD) to model the exact 3D CAD design of the serpentine cooling pipe layout shown in the reference image, integrated for a battery thermal management system. Use the following exact specifications: - Battery Pack Footprint (Plate Dimensions): 300 mm length × 200 mm width - Casing / Plate Thickness: 7.5 mm - Number of Passes / Channels: 7 parallel straight runs connected by 180-degree alternating U-bends (matching the snake/serpentine pattern in the image). - Pipe/Tube Outer Diameter: Choose an optimal standard size for battery cooling (e.g., 6 mm to 8 mm outer diameter) that snakes evenly across the 300x200 mm area. - Cell Reference Parameters (for spatial context): Cell diameter is 25 mm, cell height is 90 mm, total of 63 cells arranged underneath/around the cooling plate. - Layout Geometry: The pipe must start at one top corner, run horizontally across the 300 mm length, make a smooth 180-degree bend at the edge, run back in the opposite direction, and repeat symmetrically across the 200 mm width, ensuring uniform spacing between passes. Please output clean, executable code with comments explaining the coordinate layout and dimensions.

Parameters

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