Low-voltage platforms
- E-bikes, e-bicycles, three-wheelers
- 48V to 72V
- Fixed or swappable packs
- PMSM with FOC control, or SRM
- Urban delivery, ride-hailing and last-mile fleets
Two voltage classes. One engineering discipline.
On the home page you met our two sectors. This is how we build them. A HILMIL programme takes a vehicle from a blank sheet to validated hardware: low-voltage platforms for e-bikes, e-bicycles and three-wheelers, and high-voltage platforms for passenger cars and hypercars. The same team designs the pack, the drive train, the charger and the telematics, so every part is designed around the others.
How we build.
Step 1: Define
We start with the duty cycle: daily distance, payload, gradients, climate, charging access and target cost. These set the voltage class, pack size and motor rating.
Step 2: Engineer
Electrical, mechanical and thermal design run in parallel. We simulate pack heat, motor efficiency maps and vehicle energy use before cutting metal, and write the BMS and motor-control firmware in-house.
Step 3: Prototype
We build cell modules, packs, harnesses and drive units ourselves, so design changes turn around in days, not months.
Step 4: Test on the bench
Cells are graded, packs are cycled and characterised, and motors and controllers run on the dynamometer across their full speed and torque range.
Step 5: Validate
Systems are tested for vibration, thermal stress, water ingress and abuse conditions, aligned to international standards including UN ECE R100 for battery safety, ISO 6469 for electric vehicle safety, ISO 26262 for functional safety and UN 38.3 for transport.
Step 6: Industrialise
We freeze the design, apply design-for-manufacture, complete documentation and support type approval, including cybersecurity and software-update management under UN R155 and R156 for connected vehicles.
Platform comparison
High-voltage platforms
- Passenger cars and hypercars
- Up to 800V
- Fixed, liquid-cooled packs
- Axial- or radial-flux PMSM, with optional two-speed gear train
- Range, performance and fast charging
Built for Asian streets.
Tropical heat shortens battery life. Monsoon rain finds every seal. Dense traffic means constant stop-start. We design for all of it: thermal margins sized for 45°C ambient temperatures, sealed enclosures, and drive trains tuned for low-speed torque and regenerative braking.