Otii 
Battery Toolbox

Otii 
Battery Toolbox

Elevate Otii Arc to powerful battery profiler and emulator.

Profile the batteries for different applications and scenarios, and replaying them on the device under test. Pick the right battery to achieve product longevity.

Otii Battery Toolbox is a subscription-based software.

Features

Features

Simple set-up

Three things needed: Otii Arc, a battery of your choice, and a battery holder.

What battery can be handled? Otii Arc can sink currents up to 2.5 A and source currents up to 5 A. Monitor load currents from 50nA to 5 A with high accuracy up to 0.1%.

Battery Profiling


Create discharge profiles of the batteries with specific conditions for the discharge. The conditions are set by how your application is intended to run, so the profiling gives you a more realistic battery performance.

The profiling will stop when the defined Open Circuit Voltage (OCV) or loaded battery voltage falls below their set values, with a minimum of 600 mV.

The loads will be iterated until one of the exit conditions is met, and then a battery profile .json file will be created.

Constant current

Discharge the battery with a constant current. The current will not change as the battery voltage drops. This is similar to as if there were a linear regulator as load.

Constant power

Discharge the battery with constant power. Voltage is measured and discharge current is calculated to get set power. The discharge current will increase as the battery voltage drops during the profiling.

Constant power

Discharge the battery with constant power. Voltage is measured and discharge current is calculated to get set power. The discharge current will increase as the battery voltage drops during the profiling.

Constant resistance

Discharge the battery by simulating a resistance connected to the battery. The discharge current will decrease as the battery voltage drops during the profiling.

Battery Emulation


Otii acts as a battery, following the profiled discharge curve. Choose a battery profile and the discharge curve will be shown for that battery for the conditions set during the profiling.

There are two curves, one shows the unloaded battery voltage (OCV) for the complete discharge and the other curve shows a calculated loaded battery voltage, not necessary the one used in the profiling. Otii Arc will adjust the output voltage depending on the load, just like a real battery with increasing internal resistance and decreasing open circuit voltage.

Track

The Track option will simulate a discharge over the time you are recording. Choose “Track” if you want the tool to emulate the battery and change behavior as the energy is consumed from the battery. Position in the discharge curve will then move as your device consumes energy.

Constant

Select Constant to simulate the battery with a constant “Used capacity”. Pick a spot on the discharge curve and Otii will remain in this position, emulating the battery at this specific position (position = how much used capacity that is drawn from the battery).

Constant

Select Constant to simulate the battery with a constant “Used capacity”. Pick a spot on the discharge curve and Otii will remain in this position, emulating the battery at this specific position (position = how much used capacity that is drawn from the battery).

Parallel and series battery set-ups

Emulate set-ups with battery cells in parallel and/or series – up to 4 batteries for each set-up. Note the max Open Circuit Voltage (OCV) of 5V.


Multi set-up

Connect as many units as there are batteries that are going to be discharged. More than two Otii Arcs are easily connected with a powered USB hub. All connected batteries will be discharged with the same chosen profile.

4-wire set-up

Compensate for the cable resistance when discharging batteries with high current or if battery cables are very thin. Connect Sense+ to battery positive pole and Sense- to battery negative pole, and Otii Arc will then compensate for the voltage drop in the cables by using 4 terminal sensing.

4-wire set-up

Compensate for the cable resistance when discharging batteries with high current or if battery cables are very thin. Connect Sense+ to battery positive pole and Sense- to battery negative pole, and Otii Arc will then compensate for the voltage drop in the cables by using 4 terminal sensing.

Create, edit and share battery models

All battery profiles created with Otii Arc and Otii Battery Toolbox are .json files. Easy to edit and share! Find examples on Qoitech Github, contribute and share yours with your peers!

Tech Spec

Tech Spec

Battery Model Parameters (using Otii Arc)
Points in Emulation as many as no of iterations
ESR Range (1) up to 5 kohm
ESR Resolution down to 1 mohm
Voc Range 0 to 5 V
Voc Resolution 1 mV
Capacity Range no limit
Capacity Resolution 1 µAh
(1) Otii Battery Toolbox emulates the total ESR.

Dive into the documentation

Dive into the documentation

Sounds great, but how does it look in action?

Sounds great, but how does it look in action?

Follow Us

Terms of Use      Privacy Policy

Newsletter

Copyright © 2020 Qoitech AB. All Rights Reserved.