Purpose-Built Onboard Charger for Diverse Electric Vehicles
The LK1033 is engineered to meet the charging demands of various pure electric vehicles, including A0/A00 passenger cars, logistics vehicles, specialty vehicles, and EV conversions. This ev onboard charger targets automotive manufacturers and system integrators requiring reliable on-board battery chargers with precise voltage and current control. The product supports a wide range of output voltages and currents, allowing seamless integration into different vehicle platforms. Its design addresses the need for compact, high-density power solutions in the evolving EV market, positioning it as an essential component for enhanced energy management and operational efficiency.
Advanced Technology Enhancing Performance and Efficiency
Incorporating fully digital control with phase-shifted PWM zero-voltage/zero-current soft-switching technology, the LK1033 ensures low electromagnetic interference and high operational stability. Utilizing high-performance SiC devices, the charger maintains a peak efficiency over 94%, optimizing energy conversion and reducing thermal losses. The unit supports input voltages from 90VAC to 265VAC and frequencies of 46–65Hz, featuring automotive-grade, IP67-rated die-cast aluminum housing for protection and longevity. The forced-air cooling system and robust protections—including over/under voltage and reverse polarity self-recovery—guarantee continuous operation under challenging conditions, meeting stringent industry reliability standards.
Integration and Application in Electric Vehicle Ecosystems
The LK1033 serves a critical role in the design, testing, and production phases of new energy vehicles. It is suitable for OEMs and Tier 1 suppliers involved in EV onboard charger integration and validation. Its modular and compact architecture facilitates after-market retrofit projects and EV conversions requiring high-density, customizable power supplies. Additionally, this onboard lithium battery charger supports technical demonstration setups and training environments, providing valuable reliability and compliance assessments in development cycles. Overall, the LK1033 enhances system compatibility and supports rapid charging infrastructure within the automotive sector’s expanding EV portfolios.
Product Advantages
Design and Structural Excellence Supporting Integration
The LK1033’s modular design with a compact footprint enables straightforward incorporation into various vehicle architectures while maintaining a lightweight profile under 6 kg. The IP67-rated die-cast aluminum housing delivers robust protection against dust and water ingress, fulfilling automotive-grade durability requirements. Furthermore, the use of advanced SiC devices and phase-shifted PWM soft-switching reflects a well-engineered power inverter manufacturer approach, ensuring minimal switching losses and EMI. This design facilitates custom dc power supply implementations and seamless collaboration with dc dc converter manufacturers, enhancing the charger’s adaptability within diverse EV battery management systems.
Enhanced Operational Efficiency and Reliability for End Users
This onboard charger provides a superior balance of efficiency, protection, and ease of use. Achieving over 94% peak efficiency translates into reduced charging times and improved energy utilization, critical for logistics vehicles and specialty EV applications. Protection features like short circuit and reverse connection self-recovery reduce maintenance and downtime risks. Its compatibility with varied voltage and current levels supports flexible system designs and integration with dc ev charger manufacturers’ platforms. The intuitive digital control system enables precise power delivery and system monitoring, ensuring predictable performance and higher ROI for vehicle producers and fleet operators.
Product Overview
The 3.3kW Air-Cooled On-board Charger Assembly is a high-performance, intelligent charging solution designed for pure electric vehicles, including A0/A00-class passenger cars, logistics vehicles, specialty vehicles, and converted EVs.
The system adopts fully digital control technology for flexible and intelligent operation, enhanced protection, and strong system robustness. Utilizing advanced phase-shifted PWM zero-voltage and zero-current soft-switching technology combined with high-performance SiC devices, the charger ensures excellent stability and achieves a peak efficiency of over 94%.
With an IP67-rated die-cast aluminum housing and automotive-grade components, the charger delivers high power density, lightweight design, and reliable performance across various EV charging applications.
General Specifications
| Model Number | ||||||
| Vehicle Power Suppply Type | Vehicle on-board charger | |||||
| Model Number | LK1607 | LK1606 | LK1605 | LK1604 | LK1603 | LK1602 |
| Input Characteristic | ||||||
| Input Voltage Range | 90VAC~265VAC | |||||
| Input Frequency Range | 46~65Hz | |||||
| Starting Impule Current | ≤16A | |||||
| Input Power Factor | ≥0.99 (@220Vin, Pomax) | |||||
| Output Characteristic | ||||||
| Rated Output Power | 3300W | |||||
| Rated Output Voltage | 24 | 48 | 72 | 108 | 144 | 360 |
| Output Voltage Range | 0~36 | 0~70 | 0~95 | 0~136 | 0~180 | 0~440 |
| Output Current Range | 0~100 | 0~60 | 0~45 | 0~30 | 0~22 | 0~9 |
| Voltage/Current Regulation | ±1% & ±5% | |||||
| Output Response Time | ≤5S | |||||
| Typical Efficiency | ≥94% | |||||
| Protective Characteristic | ||||||
| Over and Under Voltage Protection | Input over and under voltage shutdown can be self-recovery,output over andunder voltage shutdown can be self-recovery | |||||
| Output Reverse Connection and Short Circuit Protcetion Output |
Output short circuit and reverse connection shutdown can beself-recovery | |||||
| Over Temperature Protection | When the heat sink temperature is higher than 75°C, it will reduce the output power. And it will disconnect the circuit when the temperature is higher than 95°C. It will restore the output when the charging temperature is lower than 85°C | |||||
| Enivromental Condition | ||||||
| Operating Ambient Temperature | -20°C~ +65°C | |||||
| Relative Humidity | 5%~95% | |||||
| Dust Proof and Waterproof | IP67 | |||||
| Cooling Method | Forced-Air Cooling | |||||
| Communication Function | CAN network | |||||
| Charging Function | Receive charging instructions to charge normally; No command charger is in standby state | |||||
| Others | ||||||
| Operating Noise | ≤60dB | |||||
| Product Size (mm) | 184*322*126 | |||||
| Product Weight | ≤6kg | |||||
