Case Study
CCU PCBA Automated Functional Test System
This case focuses on automated functional testing for CCU PCBA, with the core theme of multi-domain calibration plus functional test. The system uses modular design, separated cabinet and fixture, custom control boards, RS485 communication and configurable platform software.
Case system visualCCU multi-domain calibration and functional test architecture diagram
Test SoftwareInstrumentationFixtureDUTTraceability
Software, instrumentation, fixture, DUT and production data integration.Project Overview
Multi-domain calibration and functional test case for CCU charging control units, covering ADC, high voltage, high current, PWM, IIC, SPI and CAN.
Testing Requirements
- Integrate ADC test/calibration, high-voltage calibration and high-current calibration.
- Cover CC detection, PWM test, IIC, SPI and CAN.
- Organize electrical measurement, calibration, communication and charging control signal verification in one FCT system.
System Architecture
Test SoftwareCalibration EngineADC / HV / HCIIC / SPI / CANFixture / InterfaceCCU DUT
Key Test Items
ADC Test / CalibrationHigh Voltage CalibrationHigh Current CalibrationCC DetectionPWM TestIICSPICAN
Engineering Challenges
- Multiple calibration tasks need to be integrated into one FCT flow.
- High-voltage/high-current resources need to coexist with standard signals and communication interfaces.
- The system needs modular test design and configurable software.
Implementation
- Platform test software manages test sequences, calibration logic, data logging and result judgment.
- Custom control boards and RS485 communication provide modular control.
- Separated cabinet and fixture design supports production maintenance and future reuse.
Engineering Outcome
- A multi-domain calibration and functional test system was built for CCU PCBA.
- The architecture covers electrical measurement, communication, PWM and charging control signal verification.
- Modular design supports engineering maintenance and platform expansion.
Related Solutions
Related Engineering Capabilities
MeasurementCalibrationCommunicationFixtureSoftware
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