Application of ITECH Bidirectional DC Power Supply in Power Battery Test

“my country’s automobile industry is developing rapidly, and new breakthroughs have been made in production and sales. At the same time, the fuel crisis and environmental pollution problems are also increasing day by day. Therefore, vigorously develop new energy vehicles, replace oil with electricity, reduce polluting gas emissions, and become the automobile industry in my country and the world. direction of industrial development.

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my country’s automobile industry is developing rapidly, and new breakthroughs have been made in production and sales. At the same time, the fuel crisis and environmental pollution problems are also increasing day by day. Therefore, vigorously develop new energy vehicles, replace oil with electricity, reduce polluting gas emissions, and become the automobile industry in my country and the world. direction of industrial development.

As the power source of the new energy vehicle, the battery, its performance directly determines the cruising range and quality of the new energy vehicle. Performance testing is crucial.

Following the development direction of the industry, ITECH has introduced a series of new energy testing programs. Among them, the IT 6500C series DC programmable power supply can not only output current as a power supply, but also support external power dissipators, and also function as a load to absorb current. In addition, the IT6500C power supply provides greater discharge capacity, and the ratio of source-to-load power can be extended to 1:3, which can meet the customer’s higher power discharge test requirements in the most cost-effective way. Not only that, IT6500C power supply as a high-speed two-quadrant power supply has LOOP-MODE function, which can realize high-speed source and current-carrying mode conversion, so as to continuously and quickly switch between output and sink current, effectively avoiding voltage or current overcharge.

Figure 1 IT6500C power supply

Figure 2 Current switching

The following is a battery charging and discharging test performed by a car company user with a 6500C+ power dissipator and a hot and cold cycle system. Set charging voltage 53V, current 2A; SYSTEM/CONFIG/LOAD-ON (Extemal/Num) set external load mode, load quantity, SETUP/LOAD/I-SET set the load current value of the load, turn on the power ON, and start charging the battery to charge. When it is necessary to discharge, it is only necessary to set the power supply voltage value to be lower than the battery protection value and automatically switch the power dissipator to absorb the current seamlessly. This customer uses the program developed by Labview to realize the control of charging and discharging by the host computer. Save the data through the host computer software, after the charge and discharge test, you can draw the battery charge and discharge IV curve through the data to analyze the battery performance.

IT6500C series DC programmable power supply is not only widely used in the battery industry, but the product also supports independent setting of various mode edges, adjustable rise and fall time, support for solar Panel IV curve simulation function, built-in 20 standard automotive power grids Using the voltage curve, it has very good application prospects in photovoltaic, automotive and new energy industries.