Low cost battery equalizer using buck-boost and series LC converter with synchronous phase-shift control

Weigui, Ji; Lu, Xi; Yuan, Jing; Tang, Yingbin; Ran, Feng; Peng, Fang Zheng

doi:10.1109/apec.2013.6520444

Cited by 13 publications

(12 citation statements)

References 29 publications

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“…I 1 is the fundamental wave amplitude of the resonance current i. (9) shows that the amplitude of the resonance current decides the balancing speed, which is not affected by L 1 or C 1 values.…”

Section: ) F (T)mentioning

confidence: 99%

“…According to the energy flow, they can be classified into five groups: adjacent cell-tocell methods (ACTCMs) [5], [7]- [9], direct cell-to-cell methods (DCTCMs) [4], [10], cell-to-pack methods (CTPMs) [11]- [12], pack-to-cell methods (PTCMs) [13]- [14], and any cell(s) to any cell(s) methods (ACTACMs) [15]. For the ACTCMs and DCTCMs, due to the small voltage difference between cells and the voltage drop across the power devices, the balancing current is very small (only about C/100-C/50) [5], resulting in a long equalization time.…”

Section: Introductionmentioning

confidence: 99%

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A crossed pack-to-cell equalizer based on quasi-resonant LC converter with adaptive fuzzy logic equalization control for series-connected lithium-ion battery strings

Shang

Cui

Guerrero

et al. 2015

2015 IEEE Applied Power Electronics Conference and Exposition (APEC)

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The equalization speed, efficiency, and control are the key issues of battery equalization. This paper proposes a crossed pack-to-cell equalizer based on quasi-resonant LC converter (QRLCC). The battery string is divided into M modules, and each module consists of N series-connected cells. The energy can be transferred directly from a battery module to the lowest voltage cell (LVC) in the next adjacent module, which results in an enhancement of equalization efficiency and current. The QRLCC is employed to gain zero-current switching (ZCS), leading to a reduction of power losses and electromagnetic interference (EMI). Furthermore, an adaptive fuzzy logic control (AFLC) algorithm is employed to online regulate the equalization period according to the voltage difference between cells and the cell voltage, not only greatly abbreviating the balancing time but also effectively preventing over-equalization. A prototype with eight lithiumion battery cells is implemented. Experimental results show the proposed scheme exhibits outstanding balancing performance, and the equalization efficiency is higher than 98%. The proposed AFLC algorithm abridges the total equalization time about 47%, and reduces the switching cycle about 62% compared with the traditional fuzzy logic control (FLC) algorithm.

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Section: ) F (T)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A crossed pack-to-cell equalizer based on quasi-resonant LC converter with adaptive fuzzy logic equalization control for series-connected lithium-ion battery strings

Shang

Cui

Guerrero

et al. 2015

2015 IEEE Applied Power Electronics Conference and Exposition (APEC)

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“…Perlunya baterai sebagai sumber energi pada sumber listrik menitikberatkan pada keandalan baterai dan keamanan dalam penggunaanya. Baterai Lithium dalam bentuk pack memungkinkan memiliki perbedaan karakteristik pada setiap sel di dalamnya baik dalam karakteristik kimia maupun kelistrikannya [3]. Ketidaksamaan ini dapat menyebabkan baterai panas dengan keadaan terparahnya terbakar yang membuat ekualisasi baterai menjadi tidak terdispensasi untuk menjaga baterai dan memanjangkan umur baterai [3].…”

Section: Pendahuluanunclassified

“…Baterai Lithium dalam bentuk pack memungkinkan memiliki perbedaan karakteristik pada setiap sel di dalamnya baik dalam karakteristik kimia maupun kelistrikannya [3]. Ketidaksamaan ini dapat menyebabkan baterai panas dengan keadaan terparahnya terbakar yang membuat ekualisasi baterai menjadi tidak terdispensasi untuk menjaga baterai dan memanjangkan umur baterai [3]. Metode yang digunakan pada proses ekualisasi pun bermacam-macam, proses ekualisasi harus efisien dan juga mudah diaplikasikan serta mempunyai keandalan yang tinggi.…”

Section: Pendahuluanunclassified

Pemantauan, Proteksi, dan Ekualisasi Baterai Lithium-Ion Tersusun Seri Menggunakan Konverter Buck-Boost dan LC Seri dengan Kontrol Synchronous Phase SHift

Arfianto

Fahmi

Asfani

2016

JTITS

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Baterai jenis lithium-ion kini dipilih sebagai penyimpan energi pada kendaraan lsitrik dikarenakan power density dan energy density yang lebih besar dibandingkan baterai jenis lain. Namun, baterai lithium ion memiliki kekurangan yakni sangat sensitif terhadap overcharge. Selain itu, masalah ketidakseimbangan kapasitas baterai tersusun seri dapat mempengaruhi performa baterai secara keseluruhan. Dalam tugas akhir ini diimplementasikan skala laboratorium sistem pemantauan dan proteksi pada empat sel baterai lithiumion tersusun seri agar baterai lebih aman dari overvoltage, undervoltage dan overheat. Selain itu ekualisasi untuk menyeimbangkan kapasistas baterai sehingga masa hidup dan kapasitas baterai dapat diperpanjang. Hasil pengujian skala laboratorium menunjukan pemantauan tegangan mendapat error terbesar 1,25% dan pemantauan suhu mencapai error terbesar 4,97%. Sistem proteksi baterai dapat bekerja memutus koneksi baterai sehingga menjadi sirkuit terbuka jika mendeteksi overvoltage, undervoltage, dan overheat. Serta ekualisasi 4 baterai lithium tersusun seri dapat dialkukan dengan waktu tempuh 48 menit. Kata kunci-Baterai Lithium-ion, Pemantauan dan Proteksi Baterai, Ekualisasi, Konverter Buck-Bosot dan LC seri.

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“…This article will use non-energy consumption balance technology based on the flyback converter [8], and can achieve the effect of supplementing the energy of several battery cells by using the battery pack energy at the same time. Each battery cell has a PhotoMOS switch.…”

Section: Introductionmentioning

confidence: 99%

A Battery Equalizing Scheme Using Flyback Converter and PhotoMOS Switch

Ran

Yuan

et al. 2016

Electronics, Communications and Networks V

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This article presents the concept of a series battery balance circuit using flyback converter to implement multiple filling valley balance. The optoelectronic switches are used as the control components for increased safety. Each battery cell has a Photo Metal-Oxide-Semiconductor Field-Effect Transistor (PhotoMOS) switch. The switch is used to determine the time at which the battery cell should be charged. The equalization current can reach 2A, hence the equalization speed is faster. The simulation and experimental results verify the operating characteristics of this proposed topology and method, and show that the circuit is straightforward and has been a low cost implementation.

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Low cost battery equalizer using buck-boost and series LC converter with synchronous phase-shift control

Cited by 13 publications

References 29 publications

A crossed pack-to-cell equalizer based on quasi-resonant LC converter with adaptive fuzzy logic equalization control for series-connected lithium-ion battery strings

A crossed pack-to-cell equalizer based on quasi-resonant LC converter with adaptive fuzzy logic equalization control for series-connected lithium-ion battery strings

Pemantauan, Proteksi, dan Ekualisasi Baterai Lithium-Ion Tersusun Seri Menggunakan Konverter Buck-Boost dan LC Seri dengan Kontrol Synchronous Phase SHift

A Battery Equalizing Scheme Using Flyback Converter and PhotoMOS Switch

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