ShiboSoftwareDev/solar-battery-charger-module

This hardware setup integrates a solar panel, a lithium-ion battery, and a multi-rail buck converter with a battery charging IC, protection circuitry, and monitoring components, enabling solar power harvesting, battery charging, and power distribution in an embedded system.

Version: 1.0.4
License: unset
Stars: 0

JLCPCB_ORDER_NOTES.txt

JLCPCB ORDER RECIPE — solar-battery-charger-module 1.0.4

PCB FILE
  fabrication/solar-battery-charger-gerbers.zip

PCB OPTIONS
  Layers: 2
  Material: FR-4
  Dimensions: 66.12 x 57.00 mm
  Thickness: 1.2 mm
  Copper weight: 1 oz ONLY
  Solder mask: Black
  Silkscreen: White
  Surface finish: ENIG
  Via hole option: 0.15 mm minimum
  Via-in-pad: Epoxy filled and capped (copper paste filled/capped is acceptable)
  Plated edges: Yes
  Electrical test: 100% flying probe
  V-scoring: No
  Engineering review: Yes

PCB ORDER REMARK
  Preserve the supplied Edge_Cuts outline. Eight intentional exposed top/bottom
  copper contacts meet the routed left/right edges around semicircular openings.
  Plate these contact-bearing edges and finish them with ENIG. Use filled-and-
  capped 0.15/0.35 mm via-in-pad. Do not pull copper back from the eight edge
  contacts. Stop for clarification rather than modifying the outline or contacts.

ASSEMBLY FILES
  BOM: fabrication/solar-battery-charger-assembly-bom.csv
  CPL/PnP: fabrication/solar-battery-charger-pick-and-place.csv
  Side: Top
  Purchased parts: 60 placements / 34 unique LCSC codes
  Process: SMT plus THT/manual soldering for J_SOLAR

PARTS-CONFIRMATION GATE
  Confirm every BOM row resolves to its exact LCSC Part # and footprint.
  Reject silent substitutions for U_CHG, U_GAUGE, U_3V3, Q12, L_CHG, L_3V3,
  R_CHG_SENSE, R_GAUGE_SENSE, J_SOLAR, and J_BAT.
  J_CTRL and J_IO are board copper and must not appear as assembly parts.

OPERATING REQUIREMENTS
  Use a protected 1S Li-ion pack with a 10k 103AT-compatible NTC.
  Use a 21V-class panel with Vmp near 17.8V and worst-case cold Voc below the
  BQ24650 limit. Current-limit first power-up and qualify a first article before
  unattended charging or volume manufacture.

DO NOT
  Do not select 2 oz copper: JLCPCB's 2-layer 2 oz minimum is 0.16/0.16 mm,
  while this release intentionally targets the 1 oz 0.10/0.10 mm process.
  Do not replace the routed outline with a rectangle.
  Do not leave via-in-pad open or merely soldermask-tented.