The battery charge and discharge test system has excellent performance and broad test platform, which can test the battery pack in specific mode of charge, discharge, battery pack capacity, DC internal resistance, life and other items. According to the test standard, the comprehensive test of the electrical performance of different specifications of power battery can comprehensively evaluate the quality of power battery and check and screen the factory consistency. Dingyuan electric charge and discharge test system adopts advanced IGBT control technology and high-performance power quality control technology to realize bidirectional flow of energy and feedback of high power factor and low harmonic level of electric energy, and combines DSP digital processing technology and high- precision sampling control technology with software platform to complete high-speed dynamic response and accurate detection in the whole test process, Complete data, high efficiency, energy saving and no pollution to power grid provide reliable guarantee for the research and production of power battery.

The system topology adopts vector digital control technology based on SVPWM to realize bidirectional energy flow between power grid and battery, and realize high power factor and low harmonic. DC unit combines DSP digital signal fast processing and high-precision analog sampling to achieve high steady-state precision and fast dynamic switching.

Main Test Items

• Battery capacity test
• Battery cycle life test
• Battery charge / discharge characteristic test
• Battery charge / discharge efficiency test
• Battery overcharge / overdischarge capacity test
• Battery charge retention test
• DC internal resistance test
• Battery temperature characteristic test
• Voltage and temperature characteristic test of battery cell
• Working condition simulation test
• Battery pulse charge discharge test

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