What is a battery charge / discharge cycle test system?

High precision, integrated battery charge / discharge cycle test systems designed for lithium ion and other chemistries. Advanced features include regenerative discharge systems that recycles energy from the battery back into the channels in the system or to the grid.

What is charge/discharge testing?

In battery cycling, the classic charge/discharge testing measures the net result of all the electrochemical processes taking place inside the cell. In addition to charge/discharge testing, the use of Electrochemical Impedance Spectroscopy (one of the control modes) has become more popular in recent years.

How accurate are charge/discharge tests based on a 5 V / 100 a power supply?

Based on a 5 V / 100 A power supply, charge/discharge tests up to a maximum of 5 V / 1600 A are possible. The high precision and fast response allow higher accuracy evaluations. ※ 1:Time from less than 90% of the pre-change set current value to 90% or more of the post-change set current value

Should a charge/discharge test and impedance measurement system be integrated?

Previously, the charge/discharge system and impedance measurement system were separate systems. Integrating them eliminates the need to move the batteries between the charge/discharge test and impedance measurement systems.

How do you charge a battery with an SMU instrument?

To charge a battery using an SMU instrument, set the voltage source to the battery's voltage rating and the current limit of the source to the desired charging current. At the start of the charging cycle, since the battery voltage is less than the SMU instrument’s voltage output, current will flow into the battery.

What is a discharge/charge cycle?

In battery characterization, a discharge/charge cycle is a common test performed using a programmable power supply, an electronic load, an electronic switch, a voltmeter, and an ammeter to verify battery specifications and screen out defective products.