BI-ENERGY

TECHNOLOGY & PRODUCTS

Five business segments

The conversion technology built for EV wireless charging branched in four directions. Robotics is the same technology made smaller, the data centre is the same technology pushed to higher density, and renewable energy is the same technology scaled up. Monitoring is the layer that attaches to all of them.

EV wireless charging2022 — the starting pointRoboticsthe same technology, smallerData centrethe same technology, denserRenewablesthe same technology, largerMonitoringa layer over everything
EV wireless charging branches into robotics, data centres and renewables, with monitoring layered over all of them

CORE TECHNOLOGY

Moving power across a gap

Sending power across the air gap from a pad in the ground to a pad under a vehicle, and stepping grid voltage down to what a processor consumes inside a data centre, are the same problem. Switch at high frequency, cut the losses with resonance, carry it through magnetics.

AIR GAP

Power across an air gap

EV and robot wireless charging
  • Transmit and receive pad design with resonant circuits
  • SAE J2954 WPT classes — from slow charging to fast
  • Receive pad with integrated rectifier and in-house control boards
  • Foreign-object and living-object detection with automatic alignment
VOLTAGE GAP

Power across a voltage drop

AI server power · ESS conversion
  • AI server power supplies — high power density design
  • The data-centre feed path from grid to silicon
  • High-efficiency conversion on SiC and GaN
  • Grid-tied bidirectional power conversion
AIR GAP — crossing the gapTransmit padReceive padair gapVOLTAGE GAP — crossing the voltage dropGridMid-stageLow voltageSiliconResonant conversionhigh frequency · SiC · GaN
Wireless power transfer across an air gap and power conversion across a voltage drop rest on the same high-frequency resonant technology
85kHz resonant power conversionSiC · GaN · Planar Magnetics

POWER RANGE

From 1 kW to 1 MW

A different power level asks for a different design. We develop in three bands and carry what we prove in one band across to the others.

1 – 10 kWRobots · micro EVsMICRO22 – 75 kWPassenger & commercial EVsMACRO125 kW – 1 MWCharging · data centres · gridGRIDsmallerlargerOne conversion core, divided into three bands by power levelCircuit, control and thermal design proven in one band carries across to the others
Three power bands — micro, macro and grid
MICRO
1 – 10 kW
Robots · AGVs · micro EVs

We demonstrated micro-EV wireless charging on public roads in the Gyeongbuk regulatory free zone. Since 2026 we have been developing receive modules for outdoor mobile robots under a public project and a commercial contract at the same time.

MACRO
22 – 75 kW
Passenger and commercial EVs

We hold physical receive pads with integrated rectifiers built to SAE J2954. The fast wireless transmitter is being developed with operational compatibility secured alongside it.

GRID
125 kW – 1 MW
Charging infrastructure · data centres · grid

We are building a wireless charging reference model that scales by paralleling unit modules, together with a real-environment testbed. The grid-tied PCS and AI server power cover the feed path from grid to load.

Product

Product line-up

ProductCategoryApplication
Wireless receive pad
Receive module with the rectifier stage inside the pad, removing a separate unit
WirelessPassenger and commercial EVs
Wireless transmitter
Fast transmit pad compatible with slow-charging receivers
WirelessCharging infrastructure
Wired / wireless hybrid charger
Wired fast charging and wireless charging in one unit
WirelessCharge point operators, sites
Robot wireless charging module
Receive module and safety control for outdoor mobile robots
WirelessMobile robots, AMRs
Slow charger
Intelligent slow charging with app control
WiredApartments, workplaces
Fast charger
Fast charger supporting multiple wireless communication standards
WiredPublic stations
Distributed fast charger & power bank
Dispenser-type high-capacity charging with multiple plug standards
WiredCharging hubs, logistics
On-board charger (OBC) & LDC
On-board charger and low-voltage DC/DC converter
EV componentsOEMs and tier-1 suppliers
Grid-tied PCS
Bidirectional power conversion system (in development)
ConversionESS and solar
AI server power supply (PSU)
High-density server power supply (in development)
ConversionAI data centres

CAPABILITY

Build it, test it, certify it

Running the 2024 performance evaluation of 40kW power-bank conversion components as lead institution gave us an evaluation framework alongside the ability to build the components.

Power test facilities

We hold power conversion test equipment including bidirectional power supplies, and are adding equipment in step with the fast transmitter development.

Demonstration environments

We use the RAPA IoT technology support centre and the Kyungpook National University testbed as staged demonstration environments, and have carried work through vehicle modification, mounting and on-road operation.

Certification

EMC and EMF certification sit within our own scope of work. Ingress protection is designed to the required class, from outdoor robot use to vehicle mounting.

Standards

We design against SAE J2954, ISO 15118-20 and OCPP 2.0.1, and take part in international standardisation activity in wireless power transfer.

ROADMAP

What we are preparing next

Technical directions we are preparing at the research and development stage.

Point-of-load feed stage

A multi-stage structure that steps grid power down to the point directly ahead of the compute silicon. It is the next step beyond the AI server power module now in development.

Data centre power backup

Devices that answer the transient load swings and outages of an AI data centre. High-density conversion and bidirectional control apply here directly.

Solid-state transformers and microgrids

Load-side conversion for high-efficiency solid-state transformers connected to microgrids, together with predictive maintenance.

Security and diagnostics for conversion equipment

Adding IEC-standard monitoring and security to conversion equipment already installed, through an add-on module.

We are looking for people to build with

Tell us what you need and we will send material that fits. Development, supply and joint research enquiries reach us at the same address.