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As the 1990 s developed a new type of chemical power, the development of lithium-ion batteries has increasingly attracted worldwide research and attention. With the lithium-ion batteries from portable devices with energy battery to power the vehicle battery is becoming widespread in application, the lithium-ion battery performance testing electrochemical test equipment has entered a period of rapid development.Traditional electrochemical test instruments based analog circuit designing have been gradually replaced by digital, intelligent and modern real-time electrochemical test equipment. According to the characteristics of lithium-ion battery performance parameters, the thesis used time-domain analysis testing methods to design and develop a set of time-domain test system including the acquisition module and the test data processing and parameter-extracting module. The test system is not only able to conduct the independent test and analysis, but also expand the function of the existing electrochemical workstation’s domain testing. In this thesis, the design completed the following four main areas:1、According to the basic principle of the lithium battery characteristics testing, the thesis has researched and analyzed the overall design framework of lithium time-domain test system. Design and completed a multi-scale switching analog test module contains four electrodes, two test synchronous channels with constant voltage /constant current dual-test mode. To match the data acquisition test of analog test module,this thesis has designed a synchronized signal acquisition board with dual-channel,high-precision to realize real-time time-domain test signal acquisition.2、To complete the basic testing function of the testing and acquisition module, the thesis has designed the control logic of the acquisition module. After studying the SPI communication protocols and the data storage technology, the thesis designed chip-logic based on SPI transfer protocol and FIFO data storage logic based on storage technology,and implemented in the FPGA of system board. In order to guarantee the synchronization precision of test, the thesis designed the channel offset and gain calibration logic and the time error calibration logic based on variable time delay filter based on Farrow structure after the study of synchronous calibration technology.3 、 According to the characteristics of the interference and noise in the lithium battery voltammetry-test response waveform, in order to improve the processing precision of the subsequent analysis of extract parameters, the thesis designed the error correction algorithm based on Panta criterion and optimized the algorithm. According to the size of the amount of data collected, the system can artificial adopt smoothing algorithm of weighted moving average or smoothing algorithm based on orthogonal polynomial for data processing to improve the system efficiency.4、The thesis has achieved functional modules to achieve performance parameters functional modules. The thesis has studied the electrochemical test basic theory and system model parameter identification technology. Designing a parameter extraction module based on lithium-based equivalent circuit model and RWLS. The module has solved the problem of excessive data storage and it’s identification accuracy can reach5%.Finally, this thesis tests and verifies the function and performance of the acquisition module on the platform. According to the result of test and verification, both the function and performance meet the requirements of the system.