Charge equalisation for series‐connected LiFePO
            <sub>4</sub>
            battery strings

Hua, Chih‐Chiang; Fang, Yi-Hsiung; Li, Pei-Hong

doi:10.1049/iet-pel.2014.0567

Cited by 24 publications

(17 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, the energy stored in the inductor must be utilized during the discharge period which is formulated as eqn. (1). where i L is the inductor current, V L is the voltage across the inductor and T s is the switching period.…”

Section: B Analysis Of Charge Equalizermentioning

confidence: 99%

“…The equalizer can be classified into two categories namely dissipative and non-dissipative. The dissipative method used the shunt resistors that are connected across the battery string in order dissipate the excess voltage [1]. In dissipative shunting method [2], the dissipative resistors are used for equalizing which are connected across the batteries using switches or relays.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Buck Boost Based Battery Charge Equalization Controller for an Electrical Vehicle

R¹

2019

IJRTE

View full text Add to dashboard Cite

The conventional automobiles are the major source for the air pollution in the world. By the deficit of the fuels and the environmental point of view, many researches focused on the electric vehicle. Electricity can be stored in economically with the help of batteries. In order to meet the demand of the vehicles, the batteries are connected in series. These series connected batteries supply higher voltage and consequently reduces losses. The battery string with imbalance voltage condition causes the potential damage to the battery and its life diminishes. Hence, the battery charging system is required to improve the life of batteries and it is necessary for equal charging and discharging of the batteries. Buck boost based charge equalizer topology is proposed to reduce voltage imbalance in the battery string. The control algorithm for that equalizer is formulated and it has been verified with the developed prototype model. Both the simulation and hardware results obtained are discussed in detail.

show abstract

Section: B Analysis Of Charge Equalizermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Buck Boost Based Battery Charge Equalization Controller for an Electrical Vehicle

R¹

2019

IJRTE

View full text Add to dashboard Cite

show abstract

“…Many non-dissipative schemes for higher efficiency were proposed in literature [1,2,3,4,5,6,8,9,10,11,12,13,14]. However, in most of the schemes, the costs are relatively high because each battery cell needs two or more electrical switches [2,5,7,9,10,11,13].…”

Section: Introductionmentioning

confidence: 99%

“…However, in most of the schemes, the costs are relatively high because each battery cell needs two or more electrical switches [2,5,7,9,10,11,13]. Or the voltage tolerance of each switch is high when the switch is connected to series battery cells [3,5,14,15], or much more diodes and capacitors are used [4,12], and are not able to do modularization either.…”

Section: Introductionmentioning

confidence: 99%

A low cost battery equalizing scheme with buck-boost and series LC converter using synchronous phase-shift controller

Weigui

Ran

Yuan

et al. 2017

IEICE Electron. Express

View full text Add to dashboard Cite

This paper presents a modularized buck-boost and series LC converter (BBSLCC) circuit for series battery equalizers. The proposed topology has numerous advantages. First, the number of switches in the equalizer is equal to the number of the battery cells needs to be balanced in the string. This is so called one-switch-per-cell, which is a great advantage over the traditional buck-boost converter, since it requires almost twoswitch-per-cell to balance. Second, unlike many other existing one-switchper-cell equalizers, the proposed circuit has the advantage in the modularization design and low voltage stress requirement on the switches. Third, the peak current of the balancing capacitor are suppressed by the synchronous phase-shift controller (SPSC) which can be easily implemented by sensing the zero crossing of the LC resonant current. By using the proposed controller, the speed of the battery equalizing process is also accelerated. In this paper, the proposed topology is first presented, and the operating principle is illustrated. Afterwards, the phase-shift time and the transferred energy of the BBSLCC circuit are calculated to demonstrate the proposed control strategy details. The relationships between the phase-shift time and other circuit parameters such as the inductance and the capacitance are also analyzed. The simulation results and the experimental results are finally demonstrated and verified the theoretical analysis on the performance of the proposed BBSLCC circuit.

show abstract

“…When multiple supercapacitors are connected in series, the cell imbalance is a serious problem [12,13]. The cell imbalance of supercapacitors is typically caused by manufacturing and environmental factors [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

A High-Efficiency Voltage Equalization Scheme for Supercapacitor Energy Storage System in Renewable Generation Applications

Huang

et al. 2016

Sustainability

View full text Add to dashboard Cite

Due to its fast charge and discharge rate, a supercapacitor-based energy storage system is especially suitable for power smoothing in renewable energy generation applications. Voltage equalization is essential for series-connected supercapacitors in an energy storage system, because it supports the system's sustainability and maximizes the available cell energy. In this paper, we present a high-efficiency voltage equalization scheme for supercapacitor energy storage systems in renewable generation applications. We propose an improved isolated converter topology that uses a multi-winding transformer. An improved push-pull forward circuit is applied on the primary side of the transformer. A coupling inductor is added on the primary side to allow the switches to operate under the zero-voltage switching (ZVS) condition, which reduces switching losses. The diodes in the rectifier are replaced with metal-oxide-semiconductor field-effect transistors (MOSFETs) to reduce the power dissipation of the secondary side. In order to simplify the control, we designed a controllable rectifying circuit to achieve synchronous rectifying on the secondary side of the transformer. The experimental results verified the effectiveness of the proposed design.

show abstract

Charge equalisation for series‐connected LiFePO ₄ battery strings

Cited by 24 publications

References 36 publications

Buck Boost Based Battery Charge Equalization Controller for an Electrical Vehicle

Buck Boost Based Battery Charge Equalization Controller for an Electrical Vehicle

A low cost battery equalizing scheme with buck-boost and series LC converter using synchronous phase-shift controller

A High-Efficiency Voltage Equalization Scheme for Supercapacitor Energy Storage System in Renewable Generation Applications

Contact Info

Product

Resources

About

Charge equalisation for series‐connected LiFePO 4 battery strings

Cited by 24 publications

References 36 publications

Buck Boost Based Battery Charge Equalization Controller for an Electrical Vehicle

Buck Boost Based Battery Charge Equalization Controller for an Electrical Vehicle

A low cost battery equalizing scheme with buck-boost and series LC converter using synchronous phase-shift controller

A High-Efficiency Voltage Equalization Scheme for Supercapacitor Energy Storage System in Renewable Generation Applications

Contact Info

Product

Resources

About

Charge equalisation for series‐connected LiFePO ₄ battery strings