1. The Death of the Charging Cable
For decades, the promise of “wireless” technology was tethered by a short leash—the charging cable. Even standard Qi wireless charging requires precise alignment and direct contact. But what if power could transcend physical barriers?
Enter Long-Distance Wireless Charging (also known as Hidden or Under-Table Charging). This technology is transforming furniture into active power hubs. At Honghao Electronics, we have spent years perfecting the PCBA architecture that makes this “invisible power” not just a luxury, but a reliable infrastructure for the modern workspace.
2. Defining Long-Distance Wireless Charging
Unlike traditional inductive charging, which operates at a distance of 3-8mm, Long-Distance Wireless Charging utilizes Magnetic Resonance or enhanced Long-Range Induction to bridge gaps of 10mm to 45mm.
The Technical Edge of Honghao Electronics
Our proprietary PCBA designs focus on three core pillars:
Resonant Frequency Stability: Maintaining a stable 127.5kHz or 300kHz (depending on custom specs) through thick wood, marble, or glass.
Vertical Penetration: Our coils are engineered to minimize energy dispersion, ensuring that the flux lines are concentrated vertically toward the receiver.
FOD (Foreign Object Detection): A critical safety feature. Our boards can distinguish between a smartphone and a stray coin or set of keys on the table, preventing overheating.
3. Why the Office Sector is Transitioning Now
The “Clean Desk Policy” is no longer just about aesthetics; it’s about productivity.
Aesthetic Integration: No holes drilled into expensive conference tables.
Durability: No exposed ports or pads to be damaged by spilled coffee or heavy use.
Flexibility: Easily installed under existing furniture, making it a “retrofit” favorite for facility managers.
4. Deep Dive: The Engineering Behind the Board (PCBA Excellence)
Note to User: This section establishes your authority as a manufacturer.
At Honghao Electronics, we don’t just assemble products; we design the “brain” of the charger. The challenge of long-distance charging is thermal management. When you push 10W-15W of power through 35mm of solid oak, efficiency is everything.
Our PCBA Innovations:
High-Q Coils: We use custom-wound Litz wires with high Quality Factors (Q) to reduce skin effect losses.
Smart Power Negotiation: Our boards feature advanced ICs that support PD (Power Delivery) and QC (Quick Charge) protocols, ensuring the charger only draws what is necessary.
EMC/EMI Shielding: We implement multi-layer PCB shielding to ensure our devices don’t interfere with office Wi-Fi or Bluetooth signals.
| Feature | Standard Qi Charging | Honghao Long-Distance Tech |
| Distance | 3mm – 8mm | 10mm – 45mm |
| Installation | Top-mounted (Visible) | Under-table (Invisible) |
| Furniture Modification | Required (Hole cutting) | None (Adhesive/Screw) |
| Material Compatibility | Plastic/Leather | Wood, Glass, Stone, Marble |
6. Real-World Applications: From Coffee Shops to Boardrooms
The Smart Office: Integrating chargers into standing desks.
Hospitality: Providing “Invisible Power” at hotel nightstands without cluttering the guest’s space.
Public Spaces: Vandal-proof charging solutions for airports and libraries.
7. Quality Assurance: The Honghao Standard
Why choose Honghao Electronics over generic suppliers?
Industrial-Grade Components: We use NPO capacitors and low-RDS(on) MOSFETs to ensure a lifespan exceeding 20,000 charging hours.
Rigorous Testing: Every batch of PCBA undergoes high-temperature aging tests and efficiency verification.
Global Certifications: Our solutions are designed to meet CE, FCC, and RoHS standards, easing the path for your international distribution.
8. Partnering for the Future
The question is no longer “Does it work?” but “How soon can we implement it?” Long-distance wireless charging is the ultimate marriage of interior design and electronic engineering.
Whether you are looking for OEM/ODM finished products or a custom PCBA partner to integrate wireless power into your own furniture line, Honghao Electronics has the manufacturing scale and technical expertise to bring your vision to life.