On-Board Charger ATS
On-board charger (OBC) converts the AC power of the charging station (EVSE) into DC power to charge the EV battery. Currently common OBC power specifications include 3.3kW, 6.6kW, 11kW, and 22kW. However, the future will bring increasing numbers of bidirectional on-board chargers (BOBCs) that apply to the EV through V2X modes. Chroma ATE provides test items that comply with GB/T 40432 and other relevant test standards, assisting users with complete verification of various application modes on the unit under test (UUT).
OBC Test Architecture
BOBC Test Architecture
Standard Test Items
Charge Mode
- CAN Communication Test
- Input/Output Test
- Phase Angle Deviation Test
- Inrush Current Test
- Output Accuracy Test
- Ripple & Noise Test
- Overshoot Test
- Load Dump Test
- Line Regulation Test
- Load Regulation Test
- Fin Ramp Shut Down Test
- Fin Ramp Start Up Test
- Vin Ramp Shut Down Test
- Vin Ramp Start Up Test
- OVP/UVP/OPP Test
- Phase Failure Protection Test
- Open/Short Circuit Test
- PWM Interruption Test
Discharge Mode
- Voltage Accuracy Test
- Frequency Accuracy Test
- Dynamic Load Response Test
- Voltage Distortion Test
- DC Component Test
- Discharging Efficiency Test
- Static Power Test
- Overload Capacity Test
- OVP/UVP/OCP Test
Multifunctional Test Platform (Chroma 80700)
Chroma 80701
- 4 independent CAN/CAN FD channels
- 2 independent LIN Bus channels
- Can output multiple trigger signals
- Live counters, CRC, and UDS functions
Chroma 80702
- 12 DI/DO channels
- 2 channels of PWM output
- 8 channels each of TTL input/output
- DI/DO trigger interlock function
Chroma 80703
- EV/EVSE switchable modes
- CP PWM signal adjustment and measurement function
- Supports simulation of CP and CC signal interruption and grounding
- Programmable CP and CC loop resistance values
On-board Charger/DC-DC Converter Switchable Fixtures
- Integrated I/O interface for easy and quick switching of DUTs
- Supports single and bidirectional OBC
- Provides ports for AC single/three-phase power, DC high/low voltage, and auxiliary power
- Optional DC 600V/1200V HV port
- DMM signal measurement port
- Temperature simulation functionality
DC-DC Converter ATS
Each EV will contain at least one DC-DC converter, the function of which is to convert the power of the battery into an auxiliary power output for system use. Chroma offers ATSs that comply with GB/T 24347 specifications, and can provide customized test solutions according to specific user needs.
Standard Test Items
- CAN Communication Test
- Efficiency-weighted Test
- Rated Power Test
- Output Voltage Accuracy Test
- Output Current Accuracy Test
- Overshoot & Recovery Time Test
- Ripple & Noise Test
- Line Regulation Test
- Load Regulation Test
- Total Regulation Test
- Vin Ramp Shut Down Test
- Vin Ramp Start Up Test
- Output Response Time Test
- OVP/UVP/OCP Test
