Wholesale AC EV Wallbox Charger 7kW-22kW | Factory Manufacturer

Wholesale AC EV Wallbox Charger 7kW-22kW | Factory Manufacturer

OEM AC EV charger supplier offering 7kW, 11kW, 22kW wallbox units. Features dynamic load balancing, IP65 casing, and 3-year warranty. Low MOQ factory pricing.

Detailed Technical Description

Product Overview & System Integration

The HEMAO AC EV wallbox charger series supplies AC power directly to an electric vehicle's onboard charger (OBC). Built for residential garages and multi-family parking spaces, this unit operates across single-phase (230V ±15%) and three-phase (400V ±15%) electrical infrastructure. The charging station integrates directly with existing home photovoltaic systems and battery storage setups, enabling solar-only charging modes that bypass grid tariffs.

Our facility supports extensive OEM/ODM manufacturing customization. We deliver custom PCB layouts, specialized enclosure colors, laser-etched branding, customized cable lengths (5m standard, extendable to 10m), and pre-configured OCPP communication parameters for regional backend management.

Material & Technical Specifications

Packaging & Logistics Safety

We implement export-grade packaging protocols to eliminate transit damage during ocean and air freight:

Internal Protection: High-density EPE molded foam shell cradling the charger chassis, cable, and connector head to absorb mechanical shocks.

Moisture Barrier: Vacuum-sealed anti-static polybag containing industrial desiccant packs to prevent condensation during ocean transit.

Outer Carton: Double-wall 5-ply corrugated master carton (ECT-44 rated).

Palletization: Fumigated wooden pallets or plastic pallets secured with corner edge protectors, industrial stretch wrap, and heavy-duty PET strapping.

Typical Application Scenarios

Residential Garages & Carports: Wall-mounted 7kW/11kW units utilizing home dynamic load balancing to manage household energy distribution.

Multi-Family Residential Developments: Pedestal-mounted 22kW wallboxes integrated with RFID billing networks for shared parking access.

Commercial Building Parking Lots: Fleet charging points connected to enterprise OCPP management backends via RS485 or Ethernet.

Off-Grid & Microgrid Residences: Combined charging units interfaced with hybrid inverters to utilize excess rooftop solar production.

FAQ

Q: How does the dynamic load balancing function interface with existing home electrical panels?

A: The charger connects to an external current transformer (CT) clamp mounted on the main electrical service panel. The CT measures real-time household power consumption and transmits signals via RS485 to the charger, dynamically throttling EV charging current to prevent tripping the main breaker.

Q: Can this wallbox charger regulate current based on real-time solar inverter power production?

A: Yes. Utilizing RS485 or local network protocols, the wallbox communicates with solar inverters to capture excess PV generation data. It dynamically adjusts output from 6A to 32A, allowing the EV battery to charge exclusively on surplus solar power without drawing grid energy.

Q: What customization lead times apply for custom branding and specialized enclosure tooling?

A: Custom laser-engraved logos and custom-printed packaging require a lead time of 7 to 10 days for sample sign-off. If custom enclosure tooling or specialized mold modifications are needed, industrial design and sample production take 35 to 45 business days.

Q: What failure protection mechanisms prevent battery degradation during prolonged thermal stress?

A: The onboard temperature sensors continuously monitor terminal blocks and internal relays. If internal temperatures breach 75°C, the BMS logic automatically scales down output current. If temperatures exceed 85°C, the system initiates an immediate hard shutoff to safeguard the EV battery pack and charging components.

Call to Action

Request a precise system wiring diagram and wholesale project quote within 24 hours. Batch OEM samples available for quality testing.