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Lithium-ion laptop battery test and energy recycling

Zhou, J.X.; Wang, Q.; Wang, J.

Authors

J.X. Zhou



Abstract

Before recycling used lithium-ion laptop batteries, testing and sorting work is needed through charge and discharge tests. For current lithium-ion battery charge and discharge tests, the battery is discharged through a resistor. Thus, the energy in the process is all dissipated. In this paper, an energy-recycling battery test system model is introduced. In the system, a Li-ion 18650 battery can be charged at a constant current mode and a constant voltage mode and discharged at a constant current mode, which are realized by PWM-controlled DC-DC converters. The modes are automatically switched through a controller. In the discharging process, energy is transferred from the under-test battery to a storage battery, which can also serve as a charging source instead of the DC power supply to recycle the energy. The system is simulated using Matlab Simulink. Its test accuracy and energy-transferring efficiency is considerable. According to the simulation results, the system can save about 50% energy overall in one charge and discharge cycle.

Citation

Zhou, J., Wang, Q., & Wang, J. (2017). Lithium-ion laptop battery test and energy recycling. In Proceedings of the ASME 2017 International Design Engineering Technical Conference and Computers and Information in Engineering Conference (IDETC/CIE 2017) : August 6-9, 2017, Cleveland, Ohio, USA. https://doi.org/10.1115/detc2017-67803

Conference Name ASME 2017 International Design Engineering Technical Conference and Computers and Information in Engineering Conference
Conference Location Cleveland, Ohio, USA
Start Date Aug 6, 2017
End Date Aug 9, 2017
Acceptance Date Mar 24, 2017
Online Publication Date Aug 6, 2017
Publication Date Aug 6, 2017
Deposit Date Apr 18, 2017
Publicly Available Date Mar 29, 2024
Publisher American Society of Mechanical Engineers
Volume 4
Series Number 58165
Book Title Proceedings of the ASME 2017 International Design Engineering Technical Conference and Computers and Information in Engineering Conference (IDETC/CIE 2017) : August 6-9, 2017, Cleveland, Ohio, USA.
DOI https://doi.org/10.1115/detc2017-67803