., Irawan (2016) Pengaruh Variasi Depth Of Discharge Terhadap Kerusakan Baterai Vrla. Undergraduate thesis, Institut Teknologi Sepuluh Nopember Surabaya.
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Abstract
Pada masa sekarang ini baterai Valve Regulated Lead Acid
(VRLA) menjadi salah satu jenis baterai yang telah banyak
beredar di pasaran. Baterai VRLA banyak digunakan sebagai
Uninterrupted Power Supply (UPS) pada bidang telekomunikasi,
perbankan, pengujian dan lain sebagainya. Selain itu, juga
digunakan untuk media penyimpanan energi pada pembangkit
listrik tenaga surya atau angin, mobil golf, forklift dan kursi roda.
Masalah yang sering dihadapi ketika pemakaian baterai VRLA
adalah grid corrosion pada elektroda positif dan sulphation pada
elektroda negatif baterai sehingga mengakibatkan umur siklus
yang relatif singkat. Umur siklus dari baterai ditentukan juga dari
seberapa besar depth of discharge (DoD) pada setiap siklusnya.
Penelitian ini dilakukan dengan beberapa baterai VRLA yang
telah dipreparasi dua sel tiap pengujian. Baterai yang telah siap
kemudian diuji menggunakan alat Autolab PGSTAT302.
Pengujian dengan Autolab dimaksudkan untuk melakukan variasi
depth of discharge mulai dari 40% selama 101 siklus dan 80
siklus, 60% selama 80 siklus, serta 80% selama 80 siklus dan 60
siklus dengan laju arus konstan yaitu 2C pada baterai VRLA.
Skala DoD ditentukan berdasarkan penggunaan UPS yang
cenderung pada discharge yang relatif besar. Selanjutnya,
pengujian dilakukan dengan Scanning Electron Microscope
(SEM) dan X-Ray Diffraction (XRD) untuk mengetahui kerusakan
yang terdapat pada elektroda positif dan elektroda negatif. Dari
hasil pengujian tersebut dapat ditentukan seberapa lama umur
pakai baterai dan kerusakan yang terjadi pada baterai.
Semakin besar depth of discharge yang diaplikasikan pada
baterai VRLA akan membuat umur siklus semakin menurun.
Penurunan umur siklus terjadi karena terdapat persentase PbSO4
(timbal sulfat) yang cukup besar pada elektroda negatif ketika
dilakukan pengujian XRD yaitu mencapai 76%. Kemudian terjadi
kenaikan rata-rata ukuran kristal timbal sulfat pada elektroda
baterai seiring dengan kenaikan DoD, namun kristal yang paling
besar ukurannya terjadi pada elektroda positif
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At present this Valve Regulated Lead Acid (VRLA) batteries
into one type of battery are widely used in the market. VRLA
batteries are widely used as Uninterrupted Power Supply (UPS)
in the field of telecomunications, banking, testing, etc. In
addition, it is also used for energy storage media on a solar
power plant or wind, golf cars, forklifts and wheelchairs. The
problems often encountered when a VRLA battery application is
corrosion grid on the positive electrode and a sulphation on the
negative electrode battery reduced in a lifetime. Cycle life of
batteries specified is also from how deep the depth of discharge
(DoD) during each cycle.
This research was conducted with some of the VRLA battery
have the preparation of two cells each testing. The battery is
ready then tested using Autolab PGSTAT302N. Testing with
Autolab intended to do variations of the depth of discharge
ranging from 40% for 101 cycle and 80 cycle, 60% for 80 cycle,
as well as 80% for 80 cycle and 60 cycle with constant current
rate i.e 2C on VRLA batteries. The scale of the DoD is
determined based on the use of the UPS tend to be deep in
discharge. Furthermore, testing is done with the Scanning
Electron Microscope (SEM) and X-ray Diffraction (XRD) to know
there is failure on the positive electrode and negative electrode.
From the results of these tests can be determined how long
lifetime battery and the failure that occurs in the battery.
The greater depth of discharge that was applied on VRLA
battery will make the lifetime of declining. The drop in the
lifetime occurs because there is a percentage of PbSO4 (lead
sulfate) that is higher on the negative electrode when done testing
XRD i.e. achieved a 76%. Then happened the increase in the
average crystal size of lead sulfate on the battery's electrodes
along with increase in DoD, but most large size crystals occur at
the positive electrode
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSM 621.312 42 Ira p |
| Uncontrolled Keywords: | Autolab, baterai VRLA, depth of discharge (DoD), SEM, XRD |
| Subjects: | T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL220 Electric vehicles and their batteries, etc. |
| Divisions: | Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | EKO BUDI RAHARJO |
| Date Deposited: | 23 Jun 2020 05:48 |
| Last Modified: | 23 Jun 2020 05:48 |
| URI: | http://repository.its.ac.id/id/eprint/76205 |
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