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Electronics 2018, 7(12), 454; https://doi.org/10.3390/electronics7120454

Open and Flexible Li-ion Battery Tester Based on Python Language and Raspberry Pi

Dipartimento di Ingegneria dell’Informazione (DII), University of Pisa, Via Caruso 16, 56122 Pisa, Italy
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Received: 29 October 2018 / Revised: 3 December 2018 / Accepted: 14 December 2018 / Published: 19 December 2018
(This article belongs to the Section Computer Science & Engineering)
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Abstract

Technology improvements and cost reduction allow electrochemical energy storage systems based on Lithium-ion cells to massively be used in medium-power applications, where the low system cost is the major constraint. Battery pack maintenance services are expected to be required more often in the future. For this reason, a low-cost instrumentation able to characterize the cells of a battery pack is needed. Several works use low-cost programmable units as Li-ion cell tester, but they are generally based on proprietary-software running on a personal computer. This work introduces an open-source software architecture based on Python language to control common low-cost commercial laboratory instruments. The Python software application is executed on a Raspberry Pi board, which represents the control block of the hardware architecture, instead of a personal computer. The good results obtained during the validation process demonstrate that the proposed cell station tester features measurement accuracy and precision suitable for the characterization of Li-ion cells. Finally, as a simple example of application, the state of health of twenty 40 Ah LiFePO4 cells belonging to a battery pack used in an E-scooter was successfully determined. View Full-Text
Keywords: open-source; python; raspberry Pi; cell station tester; state-of-Health; lithium-ion cells; programmable test open-source; python; raspberry Pi; cell station tester; state-of-Health; lithium-ion cells; programmable test
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Carloni, A.; Baronti, F.; Di Rienzo, R.; Roncella, R.; Saletti, R. Open and Flexible Li-ion Battery Tester Based on Python Language and Raspberry Pi. Electronics 2018, 7, 454.

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