Desain dan implementasi sistem manajemen baterai Lithium Ion 18650

Nurhadi, Muhamad Fauzan (2023) Desain dan implementasi sistem manajemen baterai Lithium Ion 18650. Sarjana thesis, UIN Sunan Gunung Djati Bandung.

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Abstract

INDONESIA : Setiap material baterai memiliki karakteristik yang berbeda, sehingga membutuhkan manajemen yang berbeda pula dengan kelebihan dan kekurangannya masing-masing. Pengoperasian baterai Lithium-ion sangat sensitif terhadap suhu, akumulasi charge-discharge, laju charge-discharge, dan faktor lainnya. Sedangkan kinerja baterai memiliki pengaruh penting pada keselamatan, efisiensi, dan ekonomi pengoperasiannya. Untuk menanggulangi hal tersebut dibuat sebuah sistem manajemen baterai untuk memantau tegangan, temperatur 4 buah sel, dan arus beban serta sistem proteksi yang direalisasikan pada baterai Lithium-ion 18650. Alat bekerja apabila mendeteksi sel yang berada di kondisi < 3 V (under voltage), < -20 C (under temperatur), dan > 60 C (over temperature) lalu sistem proteksi MOSFET menghentikan aliran arus ke beban. Sistem yang dibuat terintegrasi dengan Internet of Things (IoT), informasi tegangan, temperatur setiap sel, arus beban dan indikator MOSFET dapat dilihat melalui aplikasi Blynk. Fitur notifikasi dan Wireless Fidelity (WiFi) provisioning digunakan pada aplikasi Blynk. Dari hasil pengujian yang telah dilakukan didapat rata-rata akurasi 99.75% untuk pengukur tegangan, 98.78% untuk pengukur temperatur dan 99.55% untuk pengukur arus. Pengujian Blynk mampu menampilkan data ke User Interface pada Blynk dengan waktu 5 detik sekali. Nilai yang ditampilkan serempak baik itu di serial monitor, Blnyk website maupun mobile. Pengujian keseluruhan pada sistem manajemen baterai berjalan dengan baik dengan menggunakan LED 15 V dan kipas 12 V sampai batas tegangan 3 V sehingga sistem memutuskan aliran arus ke beban dengan kondisi temeperatur yang aman. ENGLISH : Each battery material has different characteristics, so it requires different management, each with its advantages and disadvantages. Lithium-ion battery operation is very sensitive to temperature, charge-discharge accumulation, charge-discharge rate, and other factors. Meanwhile, battery performance has an essential influence on its operation's safety, efficiency and economics. To overcome this, a battery management system was created to monitor the voltage, temperature of 4 cells, and load current as well as a protection system implemented on the 18650 Lithium-ion battery. The tool works if it detects cells that are in a condition < 3 V (under voltage), < -20 C (under temperature), and > 60 C (over temperature) then the MOSFET protection system stops current flow to the load. The system created is integrated with the Internet of Things (IoT), information on voltage, temperature of each cell, load current and MOSFET indicators can be seen via the Blynk application. Notification features and Wireless Fidelity (WiFi) provisioning are used in the Blynk application. From the results of the tests carried out, an average accuracy of 99.75% was obtained for voltage meters, 98.78% for temperature meters and 99.55% for current meters. The Blynk test was able to display data to the User Interface on Blynk within 5 seconds. The values are displayed simultaneously on the serial monitor, many websites and mobile. The overall test on the battery management system went well using a 15 V LED and a 12 V fan up to a voltage limit of 3 V so that the system cut off current flow to the load with safe temperature conditions.

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