[Battery Testing] Electrical resistance evaluation of Li-Ion battery electrodes

Want to maximize efficiency and take the lead in the competition?

Acquire an accurate and efficient method of characterizing battery electrode.

Want to reduce cost by avoiding unnecessary investments during product development ?

Acquire the capabilities to take logical measures to solve cell characterization issues as they arise.

Continued investment and growing marketability

Research and development investment in secondary batteries for EV / PHV reached $71M worldwide (2014), and the shipment growth rate is estimated to remain at 37% (MWh basis from 2014 to 2020). In the future, it will be essential for battery makers to achieve higher efficiency than competitors' products for their survival and maxim profit.

Are you compromising the evaluation environment?

Is it impossible to measure electrical resistance at the μΩ level with high accuracy when several hundred amperes are applied to simulate the real environment?

It is actually highly feasible to create an evaluation environment with the necessary parameters for pursuing advanced battery technologies and developing highly efficient batteries.

Tabs cannot be ignored

In order to create a highly efficient battery, it is important to accurately understand and improve the characterization of a battery’s self-discharge, charge and discharge behavior, etc.

One of the important factors to check is the electrical resistance characteristics of the battery electrodes, through which a large current of several hundred amperes flows. Keysight is actively engaged with major industry players to explore these verification methods.

High-accuracy current source

An analyzer widely used for evaluating electrical characteristics of power devices is used as a current source. Current can be applied with basic accuracy of ± 0.6%.

Capacity to apply hundreds of amperes

Up to 500 A (std.) and up to 1500 A (opt.). It allows verification of resistance characteristics when a large current close to the actual operation is applied.

Pulse width 10 μsec

An extremely short current pulse with the minimum duration of 10 μsec can be applied. Evaluation of the true resistance characteristics becomes possible without the influence of heat generation.

High accuracy voltmeter

Applied voltage is measured with a digitizer with a sampling rate of 20 MSa/s and ADC resolution of 16 bits. It enables electrical resistance measurement of several μΩ levels.

Variable pulse width

The pulse width of an applied current can be set arbitrarily by the user. Time-dependent resistance can also be examined.

As a foundation technology for verification of every in-vehicle battery

Can be used to examine the resistance characteristics of the electrode sections of lithium-ion batteries and nickel-metal hydride and all solid batteries.

Battery evaluation

Keysight is now offering various solutions for evaluating self-discharging, charge and discharge, and other characteristics of in-vehicle batteries and the characterization of electrical parts of powertrains such as DC / DC.