VendoCharge™ Universal EV Charger — White Paper (2026 Release)

Prepared for: Mark Anthony Brewer (Brewtanius)

Version: 0.9 (Draft) — September 3, 2025

Executive Summary

VendoCharge™ fuses a universal EV charging brain with a vending‑style connector delivery system. The result is a compact, theater‑worthy charger that speaks every major charging language (SAE J3400/NACS, CCS via ISO 15118, legacy CHAdeMO, regional GB/T now and ChaoJi next) while automatically dispensing the right connector and selecting the right power profile (from 120 V AC trickle to 1000 V DC high‑power). The system marries

• a modular hardware cartridge rack (hot‑swappable connector heads),

• a multi‑protocol control unit (NACS + ISO 15118 + legacy stacks), and

• a dynamic power module (bidirectional, grid‑aware),
  into a single product that can be deployed at homes, forecourts, fleet depots, towers, and vending‑style parking structures.

Why now: North America is converging on SAE J3400 (NACS), while back‑end software stacks are standardizing around OCPP 2.0.1 and ISO 15118 Plug & Charge. VendoCharge leverages this convergence to deliver a “USB‑C for EVs” experience—universal, elegant, and future‑proof.

1. Market Context

• Fragmentation → Convergence. For a decade, North America split between CCS/J1772 (most OEMs) and Tesla’s NACS. In 2024–2025, automakers announced migrations to SAE J3400 (NACS), seeking access to Tesla’s robust network and a smaller, simpler plug.

• User Experience Gap. Consumers prize “plug‑and‑go” reliability over raw power. Networks adopting ISO 15118 Plug & Charge and modern backends are closing the experience gap—but hardware uniformity is still catching up.

• Opportunity. A truly universal charger that selects the right connector and voltage on demand makes sites denser, faster to use, and cheaper to maintain. Add vending‑style presentation and it becomes a destination.

2. Product Overview — VendoCharge™

Tagline: Universal EV charging, dispensed.

Core idea: A kiosk that vends the correct connector to the car, then speaks the car’s native protocol and delivers the optimal power profile.

2.1 Key Capabilities

• Universal Physical Interface

  • Native SAE J3400 (NACS) tether.

  • Integrated “Magic‑Dock” adapter for CCS1 (auto‑released when a CCS vehicle authenticates).

  • Optional auxiliary heads: Type 2/CCS2 (EU), GB/T (CN), CHAdeMO (legacy), and ChaoJi (next‑gen high‑power).

• Selectable Voltage & Current

  • Menu‑based selection (or auto‑negotiated) from 120 V AC to 1000 V DC, up to 600 A with liquid‑cooled cables.

  • Profiles: Fast DC, Overnight AC, Battery‑friendly, Time‑of‑use optimized, V2H/V2G.

• Universal Translator (Protocols)

  • NACS stack (SAE J3400) and ISO 15118 (PnC) with OCPP 2.0.1 backend.

  • Legacy CHAdeMO support and regional options via modular software stacks and adapter policies.

2.2 Vending‑Style Experience

1. Drive in → 2) Select connector/speed → 3) Connector is dispensed by a robotic carriage → 4) Handshake occurs automatically → 5) Power flows dynamically → 6) Payment clears via Plug & Charge or NFC/QR.

3. System Architecture

3.1 Hardware

• Connector Cartridge Rack: Hot‑swappable head modules (NACS, CCS1/2, GB/T, CHAdeMO, ChaoJi). RFID‑tagged for inventory and lifecycle tracking.

• Robotic Dispense Module: X‑Y gantry (low‑cost) or articulated arm (premium) with vision‑guided alignment to vehicle inlet.

• Dock/Adapter Bay: Integrated CCS1 adapter for NACS tether; lockout interlocks and shroud detection.

• Power Module: Liquid‑cooled DC power stages; galvanic isolation; solid‑state switching; power‑factor correction; surge and ground‑fault protection.

• Thermal System: Closed‑loop coolant for high‑amp cables; thermal cameras for connector/inlet monitoring; derating logic.

• Enclosure: Outdoor‑rated (NEMA 3R/IP54 baseline, IP65 option); vandal‑resistant; ADA‑height interface.

3.2 Software

• Multi‑Protocol Control Unit (MPCU): Runs NACS and ISO 15118 in parallel, locks onto the first validated handshake; legacy CHAdeMO as needed.

• OCPP 2.0.1 station management (remote firmware, meter values, smart charging, security profiles).

• Security: TLS, mutual authentication (certificates), signed firmware, hardware root‑of‑trust; IEC 62443 practices.

• Payments: Plug & Charge default; NFC (EMV), QR, and app fallback; OCPI for roaming.

• Grid Integration: IEEE 2030.5 / SunSpec support for V2G aggregation; demand‑response APIs; carbon‑aware dispatch.

3.3 Parking Fusion (Optional)

• Vertical/puzzle parking integration: Each slot has a VendoCharge port; cars can charge while stacked.

• Retrieval theater: Vehicles are “dispensed” back to drivers fully charged—blending utility with spectacle.

4. Technical Specifications (Initial SKU)

• Power

  • AC Level 2: 11.5 kW (48 A @ 240 V) standard; 19.2 kW (80 A) option.

  • DC Fast: 150 kW base; 300–350 kW scalable (cabinet‑stacked); roadmap to 600+ kW via ChaoJi/next‑gen modules.

  • Voltage Range (DC): 350–1000 V; Current: up to 600 A (liquid‑cooled cable).

• Connectors: Native SAE J3400 (NACS) tether; integrated CCS1 adapter; optional CHAdeMO/GB‑T/CCS2/ChaoJi cartridges.

• Protocols: ISO 15118 (PnC), OCPP 2.0.1, legacy CHAdeMO.

• Enclosure: NEMA 3R/IP54; ‑30 °C to +50 °C; 95% RH non‑condensing; vandal‑resistant doors.

• Safety: GFCI, isolation monitoring, surge protection, emergency stop, cable break detection, access interlocks.

5. Compliance & Certification Plan

• Standards & Codes

  • SAE J3400 (NACS) connector & signaling (North America); Type 2/CCS2 (IEC 62196) for EU; GB/T 20234 (China); ChaoJi / CHAdeMO 3.0 in applicable markets.

  • NEC Article 625 (US) for EVSE installation and continuous‑load sizing.

• Safety Certification Targets

  • UL 2594 (AC EVSE), UL 2202 (DC EVSE), UL 2251 (couplers), UL 2252 (adapters), UL 9741 (EV power export equipment for V2G/V2H).

• Cybersecurity & Data

  • TLS 1.3; certificate pinning; signed telemetry; minimal PII; GDPR/CCPA‑aligned retention.

• Accessibility & Wayfinding

  • ADA reach ranges; haptic/voice prompts; high‑contrast UI; multi‑language support.

6. User Experience

• Walk‑Up Simplicity: Choose connector and charging speed (or let Plug & Charge decide). The right head is dispensed automatically.

• Transparency: Live kW, cost, time‑to‑target, carbon intensity.

• Accessibility: One‑hand plug latch, counterbalanced cable, voice guidance.

7. Deployments & Economics

• Form Factors: Single‑bay pedestal; dual‑bay; vertical stack (4–8 bays) for constrained lots; integrated into automated towers.

• Uptime by Design: Hot‑swap heads; modular power bricks; remote triage; predictive spares.

• Revenue Mix: Energy margin, idle fees, media screen ads, subscriptions (priority queueing), V2G grid services.

8. Roadmap (2026–2028)

• 2026 H1: Pilot in two cities; NACS native + CCS1 adapter; 150 kW DC SKU; ISO 15118 PnC + OCPP 2.0.1 certified.

• 2026 H2: 300 kW cabinet; liquid‑cooled 500 A cable; V2H beta (UL 9741); OCPI roaming.

• 2027: Regional cartridge sets (EU/China); ChaoJi module; vertical tower integration kits.

• 2028: Fleet optimizer; heavy‑duty option aligned with ChaoJi/Ultra‑ChaoJi and emerging megawatt systems.

9. Risks & Mitigations

• Standards drift: Track SAE/ISO/IEC updates; OTA firmware and modular heads.

• Adapter liability: Certified adapters (UL 2252); positive‑locking and thermal monitoring.

• Cable mass at high current: Liquid‑cooled leads; assisted docking.

• Roaming/payment fragmentation: OCPI integration; universal NFC/QR fallback.

10. Glossary

• NACS (SAE J3400): North American Charging Standard; compact connector used for AC & DC.

• CCS: Combined Charging System; J1772 AC with added DC pins (CCS1 in NA, CCS2 in EU).

• ISO 15118: EV‑to‑charger communication standard enabling Plug & Charge.

• OCPP: Open Charge Point Protocol for charger‑to‑cloud management.

• ChaoJi/CHAdeMO 3.0: Next‑gen high‑power DC standard (up to ~1500 V/600 A) with global harmonization goals.

References (selected)

• SAE International — J3400 North American Charging Standard (NACS) (overview and standard page).

• U.S. Drive Electric — SAE J3400 Charging Connector update (Aug 2024).

• Open Charge Alliance — OCPP 2.0.1 Specifications & Certification.

• ISO — ISO 15118: Road vehicles — Vehicle to grid communication interface (Plug & Charge).

• UL — EV Charging Infrastructure Services (UL 2202, UL 2594, UL 2251, UL 2252, UL 9741).

• NFPA — NEC Article 625: Electric Vehicle Power Transfer System.

• CHAdeMO Association — ChaoJi / CHAdeMO 3.0 High‑Power DC (up to 1.5 kV / 600 A).

• Plug In America — Charging on Tesla Superchargers with Magic Dock (CCS access).

• The Verge — Universal Plug & Charge framework (2025 rollout).

• Car and Driver / MotorTrend — Automaker adoption of NACS (2023–2025 timeline).