Product Description
Gen 4 · 3.3KW HK-M Series OBC
CAN Bus
Liquid / Air Cooling
IP67
Key Features
- Wide input range: AC 90V~264V (45~65Hz)
- High efficiency & PF: ≥93% efficiency, Power Factor ≥0.99
- Extreme temperature range: -40°C to +85°C (operation), -40°C to +105°C (storage)
- Dual cooling options: Liquid cooling (HK-MW series) or Enforced air cooling (HK-MF series)
- Smart control: CAN bus control or enable line control
- Complete protection: Output OVP, OCP, short circuit, reverse polarity, input UVP/OVP, over‑temperature
- Mechanical durability: Meets QC/T 895‑2011 (shock & vibration resistance)
- Ingress protection: IP67 (dust‑tight & waterproof)
Core Advantages
The 4th generation HK-M series OBC delivers 3.3KW of reliable power, designed for harsh environments. With both liquid‑cooled and forced‑air‑cooled variants, it perfectly matches 144V, 312V and 540V lithium battery packs. CAN bus communication ensures seamless integration with vehicle BMS.
Compact dimensions (air‑cooled): 198(L) x 244(W) x 95(H) mm
Lightweight & rugged design – ideal for EV, heavy trucks, construction machinery, and stationary storage.
Basic Specifications
| Parameter | Value / Condition |
|---|---|
| Input Voltage Range | AC 90V ~ 264V (single phase) |
| Frequency Range | 45Hz ~ 65Hz |
| Power Factor | ≥0.99 (typical) |
| Full Load Efficiency | ≥93% |
| Mechanical Shock & Vibration | QC/T 895‑2011 compliant |
| Protection Class | IP67 |
| Operating Temperature | -40°C ~ +85°C |
| Storage Temperature | -40°C ~ +105°C |
| Cooling Method | Liquid cooling (HK-MW) / Enforced air cooling (HK-MF) |
| Control Interface | CAN bus (standard) or enable line |
| Protections | Output overvoltage, overcurrent, short circuit, reverse polarity; input undervoltage/overvoltage; over‑temperature |
| Dimensions (Air‑cooled) | 198mm (L) x 244mm (W) x 95mm (H) |
Available Models – Output & Cooling Options
| Rated Voltage | Rated Current | Output Voltage Range | Cooling Method | Li‑ion Battery Model (CAN controlled) |
|---|---|---|---|---|
| 144V | 23A | 50~198V | Liquid Cooling | HK-MW-144-23 |
| 312V | 10A | 110~440V | Liquid Cooling | HK-MW-312-10 |
| 540V | 7A | 163~650V | Liquid Cooling | HK-MW-540-07 |
| 144V | 23A | 50~198V | Enforced Air Cooling | HK-MF-144-23 |
| 312V | 10A | 110~440V | Enforced Air Cooling | HK-MF-312-10 |
| 540V | 7A | 163~650V | Enforced Air Cooling | HK-MF-540-07 |
All models support CAN bus charging control, compatible with 144V/312V/540V Li‑ion battery packs.
Applications & System Integration
Heavy Machinery
High‑voltage EVs
Stationary Energy Storage
Marine & Industrial
Why choose Gen 4 HK-M series? Designed for extreme reliability: liquid cooling for high‑density applications, forced air for cost‑effective installation. CAN 2.0B communication, ISO 26262 oriented safety, and field‑proven in global EV projects.
