wiring/sheets/PU-W-202.svg
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<?xml version="1.0" encoding="UTF-8"?><svg xmlns="http://www.w3.org/2000/svg" width="1587" height="1123" viewBox="0 0 1587 1123"><title>PU-W-202 — Battery pack sub-assembly wiring</title><desc>PoppyUp — Phase 1 Hardware Design; Wiring & Interconnect Diagram Set; Rev A; 2026-09-27; DRAFT — FOR REVIEW; A3 landscape 420 × 297 mm at 96 dpi</desc><rect width="100%" height="100%" fill="#fff"/><g id="L-BORDER"><rect x="20.0" y="20.0" width="1547.0" height="1083.0" rx="0" fill="none" stroke="#222" stroke-width="1.89" /><rect x="40.0" y="40.0" width="1507.0" height="1043.0" rx="0" fill="none" stroke="#222" stroke-width="0.94" /><text x="134.2" y="34.0" font-size="9" text-anchor="middle" fill="#333" font-family="Helvetica, Arial, sans-serif">1</text><text x="134.2" y="1097.0" font-size="9" text-anchor="middle" fill="#333" font-family="Helvetica, Arial, sans-serif">1</text><line x1="228.4" y1="20.0" x2="228.4" y2="40.0" stroke="#222" stroke-width="0.68"/><line x1="228.4" y1="1083.0" x2="228.4" 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font-family="Helvetica, Arial, sans-serif" font-weight="bold">Battery pack sub-assembly wiring</text><text x="915.0" y="1039.0" font-size="9" text-anchor="start" fill="#333" font-family="Helvetica, Arial, sans-serif">Baseline: ADR v0.3 Generated from wiring/model.py + wiring/build.py</text><text x="915.0" y="1059.0" font-size="10" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">Scale: NTS — NOT TO SCALE</text><text x="915.0" y="1075.0" font-size="9" text-anchor="start" fill="#333" font-family="Helvetica, Arial, sans-serif">Units: mm where dimensioned Signal names per docs/02 §8, docs/09 §8–9</text><text x="1265.0" y="1025.0" font-size="13" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif" font-weight="bold">Sheet PU-W-202</text><text x="1265.0" y="1039.0" font-size="10" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">Rev A 2026-09-27</text><text x="1265.0" y="1059.0" font-size="10" text-anchor="start" fill="#9c1f1f" font-family="Helvetica, Arial, sans-serif" font-weight="bold">Status: DRAFT — FOR REVIEW</text><text x="1265.0" y="1075.0" font-size="10" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">Sheet 7 of 10</text><text x="1430.0" y="1025.0" font-size="9" text-anchor="start" fill="#333" font-family="Helvetica, Arial, sans-serif">Prepared: hw architecture</text><text x="1430.0" y="1039.0" font-size="9" text-anchor="start" fill="#333" font-family="Helvetica, Arial, sans-serif">(auto-generated set)</text><text x="1430.0" y="1059.0" font-size="9" text-anchor="start" fill="#333" font-family="Helvetica, Arial, sans-serif">Reviewed: —</text><text x="1430.0" y="1075.0" font-size="9" text-anchor="start" fill="#333" font-family="Helvetica, Arial, sans-serif">Approved: —</text><rect x="48.0" y="987.0" width="492.0" height="70.0" rx="0" fill="#fff" stroke="#222" stroke-width="0.68" /><text x="54.0" y="1000.0" font-size="9" text-anchor="start" fill="#111" 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height="50.0" rx="3" fill="#f7f7f7" stroke="#222" stroke-width="1.32" /><text x="660.0" y="196.0" font-size="10" text-anchor="middle" fill="#111" font-family="Helvetica, Arial, sans-serif" font-weight="bold">CHG / DSG FETs</text><text x="660.0" y="210.0" font-size="8.5" text-anchor="middle" fill="#333" font-family="Helvetica, Arial, sans-serif">driven by BQ40Z50-R2</text><text x="660.0" y="221.0" font-size="8.5" text-anchor="middle" fill="#333" font-family="Helvetica, Arial, sans-serif">placement per TI ref. 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Arial, sans-serif">(same nodes as gauge)</text><line x1="800.0" y1="262.0" x2="800.0" y2="268.0" stroke="#222" stroke-width="1.32"/><rect x="580.0" y="262.0" width="140.0" height="200.0" rx="3" fill="#f7f7f7" stroke="#222" stroke-width="1.32" /><text x="650.0" y="278.0" font-size="10.5" text-anchor="middle" fill="#111" font-family="Helvetica, Arial, sans-serif" font-weight="bold">BQ40Z50-R2</text><text x="650.0" y="292.0" font-size="8.5" text-anchor="middle" fill="#333" font-family="Helvetica, Arial, sans-serif">gauge + protector, SBS 1.1</text><text x="650.0" y="303.0" font-size="8.5" text-anchor="middle" fill="#333" font-family="Helvetica, Arial, sans-serif">Impedance Track · balancing</text><text x="650.0" y="314.0" font-size="8.5" text-anchor="middle" fill="#333" font-family="Helvetica, Arial, sans-serif">OV 4.25 / UV 2.8 V/cell · OCD 15 A</text><text x="650.0" y="325.0" font-size="8.5" text-anchor="middle" fill="#333" font-family="Helvetica, Arial, sans-serif">SC 40 A · temp · SHA-1 auth</text><line x1="580.0" y1="352.0" x2="586.0" y2="352.0" stroke="#222" stroke-width="1.32"/><text x="589.0" y="355.0" font-size="8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">VC2 B+</text><line x1="580.0" y1="372.0" x2="586.0" y2="372.0" stroke="#222" stroke-width="1.32"/><text x="589.0" y="375.0" font-size="8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">VC1 mid</text><line x1="580.0" y1="392.0" x2="586.0" y2="392.0" stroke="#222" stroke-width="1.32"/><text x="589.0" y="395.0" font-size="8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">VC0 A−</text><line x1="580.0" y1="422.0" x2="586.0" y2="422.0" stroke="#222" stroke-width="1.32"/><text x="589.0" y="425.0" font-size="8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">TS1</text><line x1="580.0" y1="442.0" x2="586.0" y2="442.0" stroke="#222" stroke-width="1.32"/><text x="589.0" y="445.0" font-size="8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">TS2</text><line x1="622.0" y1="262.0" x2="622.0" y2="268.0" stroke="#222" stroke-width="1.32"/><line x1="664.0" y1="262.0" x2="664.0" y2="268.0" stroke="#222" stroke-width="1.32"/><line x1="657.0" y1="462.0" x2="657.0" y2="456.0" stroke="#222" stroke-width="1.32"/><line x1="685.0" y1="462.0" x2="685.0" y2="456.0" stroke="#222" stroke-width="1.32"/><rect x="528.0" y="414.0" width="46.0" height="16.0" rx="2" fill="#fff" stroke="#222" stroke-width="0.94" /><text x="551.0" y="425.0" font-size="7.5" text-anchor="middle" fill="#111" font-family="Helvetica, Arial, sans-serif">NTC 1 10 k</text><rect x="528.0" y="434.0" width="46.0" height="16.0" rx="2" fill="#fff" stroke="#222" stroke-width="0.94" /><text x="551.0" y="445.0" font-size="7.5" text-anchor="middle" fill="#111" font-family="Helvetica, Arial, sans-serif">NTC 2 10 k</text><rect x="580.0" y="610.0" width="280.0" height="44.0" rx="3" fill="#fff" stroke="#222" stroke-width="1.32" /><line x1="608.0" y1="610.0" x2="608.0" y2="616.0" stroke="#222" stroke-width="1.32"/><text x="611.0" y="625.0" font-size="7.5" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">6 PRES#</text><line x1="652.8" y1="610.0" x2="652.8" y2="616.0" stroke="#222" stroke-width="1.32"/><text x="655.8" y="625.0" font-size="7.5" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">5 NTC</text><line x1="697.6" y1="610.0" x2="697.6" y2="616.0" stroke="#222" stroke-width="1.32"/><text x="700.6" y="625.0" font-size="7.5" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">2 PACK−</text><line x1="742.4" y1="610.0" x2="742.4" y2="616.0" stroke="#222" stroke-width="1.32"/><text x="745.4" y="625.0" font-size="7.5" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">3 SMB_CLK</text><line x1="787.2" y1="610.0" x2="787.2" y2="616.0" stroke="#222" stroke-width="1.32"/><text x="790.2" y="625.0" font-size="7.5" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">4 SMB_DAT</text><line x1="832.0" y1="610.0" x2="832.0" y2="616.0" stroke="#222" stroke-width="1.32"/><text x="835.0" y="625.0" font-size="7.5" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">1 PACK+</text><line x1="608.0" y1="654.0" x2="608.0" y2="648.0" stroke="#222" stroke-width="1.32"/><line x1="652.8" y1="654.0" x2="652.8" y2="648.0" stroke="#222" stroke-width="1.32"/><line x1="697.6" y1="654.0" x2="697.6" y2="648.0" stroke="#222" stroke-width="1.32"/><line x1="742.4" y1="654.0" x2="742.4" y2="648.0" stroke="#222" stroke-width="1.32"/><line x1="787.2" y1="654.0" x2="787.2" y2="648.0" stroke="#222" stroke-width="1.32"/><line x1="832.0" y1="654.0" x2="832.0" y2="648.0" stroke="#222" stroke-width="1.32"/><text x="720.0" y="646.0" font-size="8.5" text-anchor="middle" fill="#111" font-family="Helvetica, Arial, sans-serif" font-weight="bold">J1 pack output — 6 pos., locking · pin order PROPOSED · PRES# tied to PACK− on PB · mates MB J12 (09 §9.3)</text><rect x="580.0" y="760.0" width="280.0" height="60.0" rx="3" fill="#f7f7f7" stroke="#222" stroke-width="1.32" /><text x="720.0" y="776.0" font-size="12" text-anchor="middle" fill="#111" font-family="Helvetica, Arial, sans-serif" font-weight="bold">MB J12 — Battery pack connector (main board)</text><text x="720.0" y="790.0" font-size="8.5" text-anchor="middle" fill="#333" font-family="Helvetica, Arial, sans-serif">PACK+ → BQ25792 BAT (P-04) · PACK− → one-point GND bond (W-20) · SMBus → EC PACK_SMBUS</text><text x="720.0" y="801.0" font-size="8.5" text-anchor="middle" fill="#333" font-family="Helvetica, Arial, sans-serif">NTC → BQ25792 TS · PRES# → EC (pull-up) — see PU-W-102 / PU-W-204</text><line x1="608.0" y1="760.0" x2="608.0" y2="766.0" stroke="#222" stroke-width="1.32"/><line x1="652.8" y1="760.0" x2="652.8" y2="766.0" stroke="#222" stroke-width="1.32"/><line x1="697.6" y1="760.0" x2="697.6" y2="766.0" stroke="#222" stroke-width="1.32"/><line x1="742.4" y1="760.0" x2="742.4" y2="766.0" stroke="#222" stroke-width="1.32"/><line x1="787.2" y1="760.0" x2="787.2" y2="766.0" stroke="#222" stroke-width="1.32"/><line x1="832.0" y1="760.0" x2="832.0" y2="766.0" stroke="#222" stroke-width="1.32"/></g><g id="L-CONN-POWER"><line x1="135.0" y1="240.0" x2="135.0" y2="226.0" stroke="#111" stroke-width="2.08"/><line x1="135.0" y1="356.0" x2="135.0" y2="370.0" stroke="#111" stroke-width="2.08"/><line x1="215.0" y1="240.0" x2="215.0" y2="226.0" stroke="#111" stroke-width="2.08"/><line x1="215.0" y1="356.0" x2="215.0" y2="370.0" stroke="#111" stroke-width="2.08"/><line x1="325.0" y1="240.0" x2="325.0" y2="226.0" stroke="#111" stroke-width="2.08"/><line x1="325.0" y1="356.0" x2="325.0" y2="370.0" stroke="#111" stroke-width="2.08"/><line x1="405.0" y1="240.0" x2="405.0" y2="226.0" stroke="#111" stroke-width="2.08"/><line x1="405.0" y1="356.0" x2="405.0" y2="370.0" stroke="#111" stroke-width="2.08"/><path d="M100.0,226.0 L250.0,226.0" fill="none" stroke="#111111" stroke-width="2.08" stroke-linejoin="round" stroke-linecap="round"/><path d="M100.0,370.0 L250.0,370.0" fill="none" stroke="#111111" stroke-width="2.08" stroke-linejoin="round" stroke-linecap="round"/><path d="M290.0,226.0 L440.0,226.0" fill="none" stroke="#111111" stroke-width="2.08" stroke-linejoin="round" stroke-linecap="round"/><path d="M290.0,370.0 L440.0,370.0" fill="none" stroke="#111111" stroke-width="2.08" stroke-linejoin="round" stroke-linecap="round"/><circle cx="135.0" cy="226.0" r="2.6" fill="#111111" stroke="none" stroke-width="1"/><circle cx="135.0" cy="370.0" r="2.6" fill="#111111" stroke="none" stroke-width="1"/><circle cx="215.0" cy="226.0" r="2.6" fill="#111111" stroke="none" stroke-width="1"/><circle cx="215.0" cy="370.0" r="2.6" fill="#111111" stroke="none" stroke-width="1"/><circle cx="325.0" cy="226.0" r="2.6" fill="#111111" stroke="none" stroke-width="1"/><circle cx="325.0" cy="370.0" r="2.6" fill="#111111" stroke="none" stroke-width="1"/><circle cx="405.0" cy="226.0" r="2.6" fill="#111111" stroke="none" stroke-width="1"/><circle cx="405.0" cy="370.0" r="2.6" fill="#111111" stroke="none" stroke-width="1"/><path d="M250.0,226.0 L270.0,226.0 L270.0,370.0 L290.0,370.0" fill="none" stroke="#111111" stroke-width="2.08" stroke-linejoin="round" stroke-linecap="round"/><path d="M440.0,226.0 L470.0,226.0 L470.0,205.0 L600.0,205.0" fill="none" stroke="#111111" stroke-width="2.08" stroke-linejoin="round" stroke-linecap="round"/><path d="M470.0,352.0 L580.0,352.0" fill="none" stroke="#111111" stroke-width="2.08" stroke-linejoin="round" stroke-linecap="round"/><circle cx="470.0" cy="352.0" r="2.6" fill="#111111" stroke="none" stroke-width="1"/><path d="M470.0,226.0 L470.0,352.0" fill="none" stroke="#111111" stroke-width="2.08" stroke-linejoin="round" stroke-linecap="round"/><path d="M440.0,370.0 L490.0,370.0 L490.0,372.0 L580.0,372.0" fill="none" stroke="#111111" stroke-width="2.08" stroke-linejoin="round" stroke-linecap="round"/><path d="M100.0,370.0 L90.0,370.0 L90.0,420.0 L510.0,420.0 L510.0,392.0 L580.0,392.0" fill="none" stroke="#111111" stroke-width="2.08" stroke-linejoin="round" stroke-linecap="round"/><path d="M860.0,205.0 L870.0,205.0 L870.0,590.0 L832.0,590.0 L832.0,610.0" fill="none" stroke="#111111" stroke-width="2.08" stroke-linejoin="round" stroke-linecap="round"/><path d="M300.0,420.0 L300.0,582.0 L697.6,582.0 L697.6,610.0" fill="none" stroke="#111111" stroke-width="2.08" stroke-linejoin="round" stroke-linecap="round"/><circle cx="300.0" cy="420.0" r="2.6" fill="#111111" stroke="none" stroke-width="1"/><circle cx="608.0" cy="582.0" r="2.6" fill="#111111" stroke="none" stroke-width="1"/><path d="M697.6,654.0 L697.6,760.0" fill="none" stroke="#111111" stroke-width="2.08" stroke-linejoin="round" stroke-linecap="round"/><path d="M832.0,654.0 L832.0,760.0" fill="none" stroke="#111111" stroke-width="2.08" stroke-linejoin="round" stroke-linecap="round"/><path d="M697.6,820.0 L697.6,836.0" fill="none" stroke="#111111" stroke-width="2.08" stroke-linejoin="round" stroke-linecap="round"/></g><g id="L-CONN-CTRL"><path d="M574.0,422.0 L580.0,422.0" fill="none" stroke="#1b7a3a" stroke-width="1.06" stroke-linejoin="round" stroke-linecap="round" stroke-dasharray="7 3"/><path d="M574.0,442.0 L580.0,442.0" fill="none" stroke="#1b7a3a" stroke-width="1.06" stroke-linejoin="round" stroke-linecap="round" stroke-dasharray="7 3"/><path d="M622.0,262.0 L622.0,230.0" fill="none" stroke="#1b7a3a" stroke-width="1.06" stroke-linejoin="round" stroke-linecap="round" stroke-dasharray="7 3"/><path d="M664.0,262.0 L664.0,230.0" fill="none" stroke="#1b7a3a" stroke-width="1.06" stroke-linejoin="round" stroke-linecap="round" stroke-dasharray="7 3"/><path d="M800.0,262.0 L800.0,230.0" fill="none" stroke="#1b7a3a" stroke-width="1.06" stroke-linejoin="round" stroke-linecap="round" stroke-dasharray="7 3"/><path d="M608.0,582.0 L608.0,610.0" fill="none" stroke="#1b7a3a" stroke-width="1.06" stroke-linejoin="round" stroke-linecap="round" stroke-dasharray="7 3"/><path d="M551.0,450.0 L551.0,560.0 L652.8,560.0 L652.8,610.0" fill="none" stroke="#1b7a3a" stroke-width="1.06" stroke-linejoin="round" stroke-linecap="round" stroke-dasharray="7 3"/><path d="M608.0,654.0 L608.0,760.0" fill="none" stroke="#1b7a3a" stroke-width="1.06" stroke-linejoin="round" stroke-linecap="round" stroke-dasharray="7 3"/><path d="M652.8,654.0 L652.8,760.0" fill="none" stroke="#1b7a3a" stroke-width="1.06" stroke-linejoin="round" stroke-linecap="round" stroke-dasharray="7 3"/></g><g id="L-CONN-BUS"><path d="M657.0,462.0 L657.0,478.0 L742.4,478.0 L742.4,610.0" fill="none" stroke="#8a4b00" stroke-width="1.06" stroke-linejoin="round" stroke-linecap="round" stroke-dasharray="9 3 2 3"/><path d="M685.0,462.0 L685.0,492.0 L787.2,492.0 L787.2,610.0" fill="none" stroke="#8a4b00" stroke-width="1.06" stroke-linejoin="round" stroke-linecap="round" stroke-dasharray="9 3 2 3"/><path d="M742.4,654.0 L742.4,760.0" fill="none" stroke="#8a4b00" stroke-width="1.06" stroke-linejoin="round" stroke-linecap="round" stroke-dasharray="9 3 2 3"/><path d="M787.2,654.0 L787.2,760.0" fill="none" stroke="#8a4b00" stroke-width="1.06" stroke-linejoin="round" stroke-linecap="round" stroke-dasharray="9 3 2 3"/></g><g id="L-CONN-BOND"><line x1="697.6" y1="836.0" x2="697.6" y2="844.0" stroke="#4c7c1c" stroke-width="0.94"/><line x1="687.6" y1="844.0" x2="707.6" y2="844.0" stroke="#4c7c1c" stroke-width="0.94"/><line x1="691.6" y1="847.0" x2="703.6" y2="847.0" stroke="#4c7c1c" stroke-width="0.94"/><line x1="695.6" y1="850.0" x2="699.6" y2="850.0" stroke="#4c7c1c" stroke-width="0.94"/></g><g id="L-ANNOTATION"><text x="60.0" y="70.0" font-size="14" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif" font-weight="bold">BATTERY PACK SUB-ASSEMBLY WIRING — 2S2P 21700 pack, pack PCB (PB), harness W-02 to main board J12</text><text x="60.0" y="86.0" font-size="8.5" text-anchor="start" fill="#333" font-family="Helvetica, Arial, sans-serif">Logical wiring, NTS. Sources: docs/05 §2.5, §8, §9, §12; docs/09 §1, §2.3, §9.3; docs/08 §11. FET placement, sense-resistor position and balance network per the TI BQ40Z50-R2 reference design — verify at schematic capture.</text><text x="70.0" y="116.0" font-size="8.5" text-anchor="start" fill="#333" font-family="Helvetica, Arial, sans-serif" font-weight="bold">BATTERY PACK SUB-ASSEMBLY (PACK) — built and tested by the pack vendor; certified as a unit: UN 38.3 + IEC 62133-2 (05 §2.5, 11)</text><text x="70.0" y="128.0" font-size="7.8" text-anchor="start" fill="#555" font-family="Helvetica, Arial, sans-serif">Service-replaceable behind the screw-down door: 4 screws, one connector (08 §11). Holder PC + 30 % GF, 1.0 mm between cells, 2 mm to enclosure; 2 mm PORON; fish paper / Kapton over the strips (05 §2.5).</text><text x="100.0" y="218.0" font-size="8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">A+ (nickel strip bus, 0.15 × 8 mm, spot-welded)</text><text x="290.0" y="218.0" font-size="8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">B+ = PACK+ node (7.2 V nom., 8.4 V max)</text><text x="100.0" y="386.0" font-size="8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">A− = PACK− node</text><text x="290.0" y="386.0" font-size="8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">B− = mid-tap (A+ = B−, 3.6 V)</text><text x="276.0" y="298.0" font-size="8" text-anchor="middle" fill="#111111" font-family="Helvetica, Arial, sans-serif" transform="rotate(-90 276.0 298.0)">series link</text><text x="70.0" y="146.0" font-size="8" text-anchor="start" fill="#333" font-family="Helvetica, Arial, sans-serif">2S2P: two parallel pairs in series · INR21700-50E / M50LT / P45B class · 7.2 V 10 Ah 72 Wh (05 §2.2, §2.4)</text><text x="320.0" y="442.0" font-size="7.5" text-anchor="start" fill="#333" font-family="Helvetica, Arial, sans-serif">2× 10 k NTC glued to the cell cans, one per parallel group;</text><text x="320.0" y="452.0" font-size="7.5" text-anchor="start" fill="#333" font-family="Helvetica, Arial, sans-serif">leads to PB → BQ40Z50 TS1 / TS2 (05 §2.5)</text><text x="620.0" y="250.0" font-size="7.5" text-anchor="end" fill="#1b7a3a" font-family="Helvetica, Arial, sans-serif">CHG</text><text x="667.0" y="250.0" font-size="7.5" text-anchor="start" fill="#1b7a3a" font-family="Helvetica, Arial, sans-serif">DSG</text><text x="806.0" y="260.0" font-size="7.5" text-anchor="middle" fill="#1b7a3a" font-family="Helvetica, Arial, sans-serif" transform="rotate(-90 806.0 260.0)">blow</text><text x="464.0" y="201.0" font-size="8" text-anchor="end" fill="#111" font-family="Helvetica, Arial, sans-serif">B+ → FETs → fuse → PACK+</text><text x="494.0" y="364.0" font-size="7.5" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">mid</text><text x="300.0" y="416.0" font-size="8" text-anchor="middle" fill="#111111" font-family="Helvetica, Arial, sans-serif">A− → VC0 · PACK−</text><text x="876.0" y="405.5" font-size="8" text-anchor="middle" fill="#111111" font-family="Helvetica, Arial, sans-serif" transform="rotate(-90 876.0 405.5)">PACK+</text><text x="358.8" y="578.0" font-size="8" text-anchor="middle" fill="#111111" font-family="Helvetica, Arial, sans-serif">PACK−</text><text x="599.9" y="556.0" font-size="7.5" text-anchor="middle" fill="#1b7a3a" font-family="Helvetica, Arial, sans-serif">NTC → J1-5 (BQ25792 TS, secondary — 05 §8)</text><text x="699.7" y="474.0" font-size="7.5" text-anchor="middle" fill="#8a4b00" font-family="Helvetica, Arial, sans-serif">SMBus CLK / DAT (100 kHz)</text><text x="735.0" y="512.0" font-size="7.5" text-anchor="end" fill="#8a4b00" font-family="Helvetica, Arial, sans-serif">pull-ups on the main board (3.3 V AON)</text><text x="874.0" y="722.0" font-size="8.5" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif" font-weight="bold">W-02 6-way discrete-wire pack harness, locking connector</text><text x="874.0" y="734.0" font-size="8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">length TBD (~60 mm est. from the docs/08 layout); connector family open — OI-3</text><text x="874.0" y="746.0" font-size="8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">(JST GH/XA class per 09 vs Molex Micro-Fit / JST GH per 05 vs Nano-Fit for 10 A per 09)</text><text x="874.0" y="758.0" font-size="8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">PACK+ / PACK− one pin each → ≥ 5 A/pin needed (5 A charge, 7 A system peak)</text><text x="713.6" y="852.0" font-size="8" text-anchor="start" fill="#4c7c1c" font-family="Helvetica, Arial, sans-serif">W-20 battery negative bonded to MB GND at one point near the charger (09 §6)</text><text x="70.0" y="690.0" font-size="8" text-anchor="start" fill="#555" font-family="Helvetica, Arial, sans-serif" font-style="italic">pack boundary</text><text x="940.0" y="116.0" font-size="9.5" text-anchor="start" fill="#333" font-family="Helvetica, Arial, sans-serif" font-weight="bold">J1 (PB) / J12 (MB) PIN ALLOCATION — signal list Verified (05 §2.5); pin order PROPOSED (Assumed)</text><rect x="940.0" y="122.0" width="600.0" height="15.8" rx="0" fill="#e9e9e9" stroke="#444" stroke-width="0.49" /><text x="943.0" y="132.8" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif" font-weight="bold">Pin</text><line x1="974.0" y1="122.0" x2="974.0" y2="137.8" stroke="#444" stroke-width="0.49"/><text x="977.0" y="132.8" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif" font-weight="bold">Signal</text><line x1="1054.0" y1="122.0" x2="1054.0" y2="137.8" stroke="#444" stroke-width="0.49"/><text x="1057.0" y="132.8" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif" font-weight="bold">Notes</text><rect x="940.0" y="137.8" width="600.0" height="25.5" rx="0" fill="#fff" stroke="#444" stroke-width="0.49" /><text x="943.0" y="148.6" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">1</text><line x1="974.0" y1="137.8" x2="974.0" y2="163.2" stroke="#444" stroke-width="0.49"/><text x="977.0" y="148.6" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">PACK+</text><line x1="1054.0" y1="137.8" x2="1054.0" y2="163.2" stroke="#444" stroke-width="0.49"/><text x="1057.0" y="148.6" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">to BQ25792 BAT; ≥ 5 A/pin — one pin per rail is only viable on a ≥ 5 A/pin family (Micro-Fit 3.0 / Nano-Fit); JST GH</text><text x="1057.0" y="158.3" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">(1 A) / XA (3 A) cannot carry 5 A on one pin</text><rect x="940.0" y="163.2" width="600.0" height="15.8" rx="0" fill="#fafafa" stroke="#444" stroke-width="0.49" /><text x="943.0" y="174.1" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">2</text><line x1="974.0" y1="163.2" x2="974.0" y2="179.0" stroke="#444" stroke-width="0.49"/><text x="977.0" y="174.1" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">PACK−</text><line x1="1054.0" y1="163.2" x2="1054.0" y2="179.0" stroke="#444" stroke-width="0.49"/><text x="1057.0" y="174.1" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">one-point bond to MB GND near the charger</text><rect x="940.0" y="179.0" width="600.0" height="15.8" rx="0" fill="#fff" stroke="#444" stroke-width="0.49" /><text x="943.0" y="189.8" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">3</text><line x1="974.0" y1="179.0" x2="974.0" y2="194.8" stroke="#444" stroke-width="0.49"/><text x="977.0" y="189.8" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">SMB_CLK</text><line x1="1054.0" y1="179.0" x2="1054.0" y2="194.8" stroke="#444" stroke-width="0.49"/><text x="1057.0" y="189.8" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">BQ40Z50-R2 SMBus, pull-ups on 3.3 V AON</text><rect x="940.0" y="194.8" width="600.0" height="15.8" rx="0" fill="#fafafa" stroke="#444" stroke-width="0.49" /><text x="943.0" y="205.6" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">4</text><line x1="974.0" y1="194.8" x2="974.0" y2="210.5" stroke="#444" stroke-width="0.49"/><text x="977.0" y="205.6" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">SMB_DAT</text><line x1="1054.0" y1="194.8" x2="1054.0" y2="210.5" stroke="#444" stroke-width="0.49"/><rect x="940.0" y="210.5" width="600.0" height="15.8" rx="0" fill="#fff" stroke="#444" stroke-width="0.49" /><text x="943.0" y="221.3" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">5</text><line x1="974.0" y1="210.5" x2="974.0" y2="226.2" stroke="#444" stroke-width="0.49"/><text x="977.0" y="221.3" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">NTC</text><line x1="1054.0" y1="210.5" x2="1054.0" y2="226.2" stroke="#444" stroke-width="0.49"/><text x="1057.0" y="221.3" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">pack NTC to BQ25792 TS (secondary, 05 §8); primary NTCs read by BQ40Z50</text><rect x="940.0" y="226.2" width="600.0" height="15.8" rx="0" fill="#fafafa" stroke="#444" stroke-width="0.49" /><text x="943.0" y="237.1" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">6</text><line x1="974.0" y1="226.2" x2="974.0" y2="242.0" stroke="#444" stroke-width="0.49"/><text x="977.0" y="237.1" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">PRES#</text><line x1="1054.0" y1="226.2" x2="1054.0" y2="242.0" stroke="#444" stroke-width="0.49"/><text x="1057.0" y="237.1" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">pack-present, tied to PACK− on PB (EC pull-up)</text><text x="940.0" y="264.0" font-size="9.5" text-anchor="start" fill="#333" font-family="Helvetica, Arial, sans-serif" font-weight="bold">PROTECTION LAYERS AND PACK RULES (05 §8, §9, §12)</text><rect x="940.0" y="270.0" width="600.0" height="15.8" rx="0" fill="#e9e9e9" stroke="#444" stroke-width="0.49" /><text x="943.0" y="280.8" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif" font-weight="bold">Layer</text><line x1="1030.0" y1="270.0" x2="1030.0" y2="285.8" stroke="#444" stroke-width="0.49"/><text x="1033.0" y="280.8" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif" font-weight="bold">Rule / rating</text><rect x="940.0" y="285.8" width="600.0" height="25.5" rx="0" fill="#fff" stroke="#444" stroke-width="0.49" /><text x="943.0" y="296.6" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">Primary</text><line x1="1030.0" y1="285.8" x2="1030.0" y2="311.2" stroke="#444" stroke-width="0.49"/><text x="1033.0" y="296.6" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">BQ40Z50-R2 FETs: OV 4.25 V/cell, UV 2.8 V/cell, OCD 15 A, SC 40 A, temperature; cell balancing (bleed); Impedance Track</text><text x="1033.0" y="306.3" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">SOH / cycle count; SHA-1 authentication</text><rect x="940.0" y="311.2" width="600.0" height="15.8" rx="0" fill="#fafafa" stroke="#444" stroke-width="0.49" /><text x="943.0" y="322.1" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">Secondary</text><line x1="1030.0" y1="311.2" x2="1030.0" y2="327.0" stroke="#444" stroke-width="0.49"/><text x="1033.0" y="322.1" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">BQ294xx opens the chemical fuse at 4.35 V/cell (independent of the gauge)</text><rect x="940.0" y="327.0" width="600.0" height="25.5" rx="0" fill="#fff" stroke="#444" stroke-width="0.49" /><text x="943.0" y="337.8" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">Charger</text><line x1="1030.0" y1="327.0" x2="1030.0" y2="352.5" stroke="#444" stroke-width="0.49"/><text x="1033.0" y="337.8" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">BQ25792 own OVP / OCP; charge 8.40 V (option 8.30 V longevity), 5.0 A fast charge (verify vs cell spec), pre-charge 500</text><text x="1033.0" y="347.6" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">mA < 6.0 V, termination 250 mA; JEITA 0–45 °C via BQ40Z50 NTCs (primary) and TS pin (secondary)</text><rect x="940.0" y="352.5" width="600.0" height="25.5" rx="0" fill="#fafafa" stroke="#444" stroke-width="0.49" /><text x="943.0" y="363.3" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">Cell temperature</text><line x1="1030.0" y1="352.5" x2="1030.0" y2="378.0" stroke="#444" stroke-width="0.49"/><text x="1033.0" y="363.3" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">2 NTCs; charge window 0–45 °C; discharge cut-off −20 / +60 °C by the protector; skin-temperature throttling acts first</text><text x="1033.0" y="373.1" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">(06)</text><rect x="940.0" y="378.0" width="600.0" height="25.5" rx="0" fill="#fff" stroke="#444" stroke-width="0.49" /><text x="943.0" y="388.8" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">Fuse / path</text><line x1="1030.0" y1="378.0" x2="1030.0" y2="403.5" stroke="#444" stroke-width="0.49"/><text x="1033.0" y="388.8" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">10 A / 32 V chemical fuse (05 §2.5) — 09 §2.3 states '10 A continuous, 20 A fuse'; PCB traces sized for 2× fuse rating —</text><text x="1033.0" y="398.6" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">reconcile (OI-3)</text><rect x="940.0" y="403.5" width="600.0" height="15.8" rx="0" fill="#fafafa" stroke="#444" stroke-width="0.49" /><text x="943.0" y="414.3" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">Mechanical</text><line x1="1030.0" y1="403.5" x2="1030.0" y2="419.2" stroke="#444" stroke-width="0.49"/><text x="1033.0" y="414.3" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">PC+GF holder, 2 mm PORON drop isolation, fish paper / Kapton; UN 38.3 T3/T4/T6 on the sub-assembly</text><rect x="940.0" y="419.2" width="600.0" height="15.8" rx="0" fill="#fff" stroke="#444" stroke-width="0.49" /><text x="943.0" y="430.1" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">Low battery</text><line x1="1030.0" y1="419.2" x2="1030.0" y2="435.0" stroke="#444" stroke-width="0.49"/><text x="1033.0" y="430.1" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">5 % graceful pause, 3 % EC hard cut, cell UVLO 2.8 V (pack 5.6 V); RTC kept by MS621 coin cell on the MB (05 §10.1)</text><rect x="940.0" y="435.0" width="600.0" height="25.5" rx="0" fill="#fafafa" stroke="#444" stroke-width="0.49" /><text x="943.0" y="445.8" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">Transport</text><line x1="1030.0" y1="435.0" x2="1030.0" y2="460.5" stroke="#444" stroke-width="0.49"/><text x="1033.0" y="445.8" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">≤ 100 Wh (72 Wh); ≤ 30 % SoC for air freight of finished goods, IATA PI 967 Section II label; Wh statement etched on the</text><text x="1033.0" y="455.6" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">bottom face</text><rect x="940.0" y="472.5" width="600.0" height="99.0" rx="0" fill="#fff" stroke="#222" stroke-width="0.68" /><text x="948.0" y="487.5" font-size="9.5" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif" font-weight="bold">Notes</text><text x="948.0" y="504.6" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">1. The pack is permanently in circuit (NVDC): it is the hold-up for PD unplug and for the Pro Port A / Port C mux hand-over; no</text><text x="960.0" y="514.8" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">supercapacitor (05 §10.2).</text><text x="948.0" y="524.9" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">2. Only PACK+, PACK−, SMBus, one NTC and PRES# leave the pack. The gauge reads the two cell-group NTCs; the MB reads one of them on the</text><text x="960.0" y="535.0" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">charger TS pin as a secondary check (05 §8).</text><text x="948.0" y="545.2" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">3. OI-3: connector family and per-pin current, fuse rating (10 A vs 20 A) and pack-path continuous rating (10 A per 09 §2.3) are inconsistent</text><text x="960.0" y="555.3" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">between 05 and 09 — fix before the pack RFQ.</text><text x="948.0" y="565.5" font-size="7.8" text-anchor="start" fill="#111" font-family="Helvetica, Arial, sans-serif">4. Cell make/model is a class choice (05 §2.4); the golden-image learning cycle and chemistry ID are set per cell type at PVT (05 §9).</text></g></svg>