About the lithium battery research and design of automatic test system

Source: 2020 - 04 - 11 disguise hits: time along with the development of green energy and low carbon economy, customers for the manufacture of lithium-ion batteries quality put forward higher and higher requirements. The performance test is necessary for the quality of the product. The testing process of real-time monitoring and information feedback is the assurance of performance test reliability. At present, the electrical performance test in the lithium ion battery generally standardized measuring instrument for manual testing. Not suitable for large-scale industrial production automation and intelligent testing information management. The test efficiency is low, the cost is high, can't effective monitoring of the defective product in real time. Use of the existing test instrument and embedded system realize the real-time collection and analysis of test data, the real-time monitoring of the quality of product and the good human-machine interface. Considering the factors such as production costs, we developed a reliable performance, reasonable price of lithium battery test equipment, can realize unmanned operation, to provide real-time test information feedback. The equipment is controlled by single chip microcomputer testing instruments, collecting battery electric performance parameters, implement automatic test battery performance. 1. Practice shows that the test function analysis ability, life, security, and so on the main performance indexes of lithium-ion batteries can be displayed from the lithium battery internal resistance, lithium battery internal resistance is smaller, the greater the capacity, internal resistance value changes can predict battery life and safety performance, lithium battery internal resistance is an important technical measure of battery performance indicators. Lithium battery performance test is mainly internal resistance and voltage testing. The test system is mainly realized the lithium battery internal resistance and voltage measurement, data analysis, test information, real-time display and transmission, and other functions. 2 hardware system this system adopts the S3C2410 chip as the core processor, is a 32-bit MCU from samsung, using 32-bit ARM920T kernel, frequency up to 203 MHZ, built-in 16 KB program memory and data memory, three way UART, four-way DMA, etc. FLASH extension 64 m used to store WINDOWS CE embedded operating system, application code, etc. Through the Ethernet controller CS8900A extend 10 m Ethernet port, the system is connected to the INTERNAT for remote monitoring. System also designed the keyboard and LCD display, man-machine interface is realized. As shown in figure 1, S3C2410 USES the serial bus control agilent 34401 multimeter measure the internal resistance and voltage. Microcontroller reads the data, set according to the scope of the test data analysis, processing and display, and the real-time transmission of data to a PC for remote monitoring. Microcontroller also according to the program automatic control relay, the operation of the actuators, and use the complete automatic test instrument. System can also be manually set button to control the test system.