Multi-Step Constant Current-Constant Voltage Charging Strategy for a Valve Regulated Lead-Acid Battery

2021 ◽  
pp. 1-1
Author(s):  
Sandhya Lavety ◽  
Ritesh Keshri ◽  
Madhuri A Chaudhari
Keyword(s):  
Constant Current ◽  
Constant Voltage ◽  
Lead Acid Battery ◽  
Charging Strategy ◽  
Lead Acid

scholarly journals Contactless power transfer system for sealed lead acid battery charging

2017 ◽  
Vol 5 (1) ◽  
pp. 20-26 ◽  
Author(s):  
Gautam Rituraj ◽  
Brijesh Kumar Kushwaha ◽  
Praveen Kumar
Keyword(s):  
Constant Current ◽  
Optimum Operating ◽  
Transfer System ◽  
Control Parameters ◽  
Power Transfer ◽  
Constant Voltage ◽  
Lead Acid Battery ◽  
Battery Bank ◽  
Contactless Power Transfer ◽  
Lead Acid

In this paper, an experimental study is carried out while charging the sealed lead acid battery bank using a series-parallel (SP) compensated contactless power transfer (CPT) system. Constant current (CC) and constant voltage (CV) modes are used for charging the battery bank. An expression of optimum operating frequency is derived to maintain the maximum compensated coil efficiency throughout the load variation in charging process. An experimental setup of SP compensated CPT system is built for charging the battery bank. The variation of compensated coil efficiency and the load phase angle with respect to different operating frequencies in CC and CV modes is verified with the measurement. Based on the analysis, the control parameters are identified.

Fast Charging Lead-Acid Battery Technology Theory Analysis

2014 ◽  
Vol 1070-1072 ◽  
pp. 525-529
Author(s):  
Kuang Cheng Li ◽  
Zheng Liu ◽  
Ya Long Liu ◽  
Yan Liu
Keyword(s):  
Raw Materials ◽  
Pulse Discharge ◽  
Active Material ◽  
Constant Current ◽  
Constant Voltage ◽  
Lead Acid Battery ◽  
Current Limit ◽  
Fast Charging ◽  
Battery Technology ◽  
Lead Acid

Lead-acid battery has perfect characteristics, such as good performance, rich raw materials and low prices, it plays an important role as starting power and auxiliary power in vehicles, Because of inadequate understanding internal active material in physical or chemistry reaction in charging process or technical conditions of limit ,the charging methods mainly contents the constant voltage ,constant voltage the current limit, constant current .These methods fail to damages such as overcharging ,short-charging, gas chromatography and high electrolyte temperature. So, this paper analyzes concentration polarization and electrochemical polarization in fast charging based on the MAS theorems. However, pulse discharge technology can change the concentration of ions near the electrode, which speeds up the electrochemical reaction rate and increase the energy into the chemical energy efficiency.

Numerical and Experimental Study of Lead-Acid Battery

2016 ◽  
Author(s):  
Vicente D. Munoz-Carpio ◽  
Jerry Mason ◽  
Ismail Celik ◽  
Francisco Elizalde-Blancas ◽  
Alejandro Alatorre-Ordaz
Keyword(s):  
Experimental Study ◽  
Renewable Energy Sources ◽  
Operating Conditions ◽  
Constant Current ◽  
Lead Acid Battery ◽  
Physical Processes ◽  
Lead Acid Batteries ◽  
Secondary Battery ◽  
Industrial Storage ◽  
Lead Acid

Lead-Acid battery was the earliest secondary battery to be developed. It is the battery that is most widely used in applications ranging from automotive to industrial storage. Nowadays it is often used to store energy from renewable energy sources. There is a growing interest to continue using Lead-Acid batteries in the energy systems due to the recyclability and the manufacturing infrastructure which is already in place. Due to this rising interest, there is also a need to improve the efficiency and extend the life cycle of Lead-Acid batteries. To achieve these objectives, it is necessary to gain a better understanding of the physics taking place within individual batteries. A physics based computational model can be used to simulate the mechanisms of the battery accurately and describe all the processes that are happening inside; including the interactions between the battery elements, based upon the physical processes that the model takes into account. In the present paper, we present a discharge/charge experimental study that has been carried out with small Lead-Acid batteries (with a capacity of 7 Ah). The experiments were performed with a constant current rate of 0.1C [A]1 for two different battery arrangements. An in-house zero dimensional model was developed to perform simulations of Lead-Acid batteries under different operating conditions. A validation analysis of the model was executed to confirm the accuracy of the results obtained by the model compared to the aforementioned experiments. Additional simulations of the battery were carried out under different current rates and geometry modifications in order to study how the performance of the battery may change under these conditions.

scholarly journals Modeling of Photovoltaic MPPT Lead Acid Battery Charge Controller for Standalone System Applications

2020 ◽  
Vol 182 ◽  
pp. 03005
Author(s):  
Rodney H.G. Tan ◽  
Chee Kang Er ◽  
Sunil G. Solanki
Keyword(s):  
Maximum Power ◽  
Maximum Point ◽  
Solar Pv ◽  
Lead Acid Battery ◽  
Pv System ◽  
Photovoltaic Panel ◽  
Battery Charge ◽  
Pv Panel ◽  
Charging Strategy ◽  
Lead Acid

This paper presents the circuitry modeling of the solar photovoltaic MPPT lead-acid battery charge controller for the standalone system in MATLAB/Simulink environment. A buck topology is utilized as a DC-DC converter for the charge controller implementation. The maximum power of the photovoltaic panel is tracked by the Perturb and Observe MPPT algorithm. The battery charge controller charges the lead-acid battery using a three-stage charging strategy. The three charging stages include the MPPT bulk charge, constant voltage absorption charge, and float charge stage. The performance analysis of the model is carried out in the following aspects, there are MPPT tracking performance, battery charging performance and overall charge controller efficiency performance are benchmarked with commercial MPPT charge controller for validation. The performance result shows that the MPPT is capable to track to the PV panel maximum point at any solar irradiance variation within 0.5 seconds with maximum power tracking efficiency up to 99.9 %. The three-stage charging strategy also successfully demonstrated. The overall charge controller average efficiency achieved up to 98.3 % which matches many high end commercial solar PV MPPT charge controller product specifications. This validated model contributes to a better sizing of PV panel and battery energy storage for the small and medium standalone PV system.

scholarly journals Pengaruh Penggunaan Pulsa Tegangan sebagai Desulfator terhadap Pemulihan Kapasitas Baterai Berbahan Lead Acid

2015 ◽  
Vol 2 (4) ◽  
pp. 224
Author(s):  
Ahmad Juang Pratama ◽  
Hamzah Firdaus
Keyword(s):  
Life Cycle ◽  
Lead Sulfate ◽  
Constant Current ◽  
Battery Life ◽  
Lead Acid Battery ◽  
Time Duration ◽  
Pulse Technique ◽  
Battery Capacity ◽  
Speed Up ◽  
Lead Acid

<p><em>Abstrak–</em><strong>Pengecasan dengan menggunakan teknik pulsa arus adalah salah satu teknik yang dapat digunakan untuk mengatasi kehilangan kapasitas aki secara prematur. Teknik ini bisa mempercepat proses pengecasan aki dan memperpanjang siklus hidup sebesar 3 sampai 4 kali dibandingkan dengan pengecasan konvensional dengan arus konstan. Lebih panjangnya siklus hidup baterai berbahan <em>lead acid</em> (BLA) ini dikarenakan teknik pulsa tegangan bersifat sebagai desulfator yaitu pengurai Kristal senyawa timbal sulfat (PbSO<sub>4</sub>) yang menempel pada elektroda dan menjadi penyebab utama BLA kehilangan kapasitas secara prematur. Penelitian dilakukan untuk melihat efek pemulihan / desulfator, dimana BLA yang sudah lemah karena sudah terpakai di <em>treatment</em> dengan pulsa tegangan akan mengembalikan kapastias simpan BLA, menggunakan <em>prototype</em> yang telah dibuat. Dari eksperimen yang dilakukan terlihat peningkatan nilai Daya <em>starter</em> dan peningkatan durasi pembebanan pada BLA.</strong></p><p> </p><p><em>Abstract – </em><strong>Battery charging using pulse technique is a technique that can be used to overcome the premature loss of battery capacity. This technique can speed up the process of charging and extended battery life cycle 3 to 4 times compared with conventional charging using constant current. The Longer  life cycle of Lead Acid Battery is because the technique has desulfator effect. Voltage pulse decomposite timbale sulfate (PbSO<sub>4</sub>) attached to the electrode which is  the main cause of the premature loss of capacity . This study will investigate the effects of the recovery of battery capacity for used weak Lead Acid Battery. Voltage pulses will be applied to the battery using a charger/desulfator prototype. The experiment results show that there is improvement of Cold Cranking Amps Level and Load time duration of the Lead Acid Battery.</strong></p><p><em> </em></p><p><strong><em>Keywords –</em></strong><em> BLA(Lead Acid Battery) desulfator, pulse voltage, lead sulfate</em></p>

scholarly journals A Smart Two-Stage Charging Strategy Implemented on a PV Module Array with a Simple MPPT for LiFePO4 Batteries

2018 ◽  
Author(s):  
Pi-Yun Chen ◽  
Kuei-Hsiang Chao ◽  
Yu-Sheng Tsai
Keyword(s):  
High Speed ◽  
Current Mode ◽  
Buck Converter ◽  
Constant Current ◽  
Storage Device ◽  
Photovoltaic Module ◽  
Constant Voltage ◽  
Battery Charger ◽  
Two Stage ◽  
Charging Strategy

This paper aims to present a smart high speed battery charger, powered by a photovoltaic module array, for a LiFePO4 battery as a solar energy storage device. With a battery charging strategy, the presented battery charger involves a Buck converter as the core equipped with a simple maximum power point (MPP) tracker. Considering complexity reduction and easy hardware implementation, a constant voltage MPP tracking approach is adopted such that the maximum amount of output power can be delivered to the load in response to an arbitrary change in the solar radiation. A smart two-stage charging strategy, with a constant current mode followed by a constant voltage mode, is employed in such a way that the battery charge process can be accelerated largely, while the damage caused by overcharging can be prevented. In the end, the performance of this proposal is validated experimentally.

A Kind of Intelligent Fast Charger of the Lead Acid Battery Based on MCU

2014 ◽  
Vol 8 (1) ◽  
pp. 229-233
Author(s):  
Lun-qiong Chen ◽  
Bei Li ◽  
Lin Yu
Keyword(s):  
Duty Cycle ◽  
Control Unit ◽  
Constant Current ◽  
Measurement Unit ◽  
Lead Acid Battery ◽  
Pulse Charging ◽  
Discharge Unit ◽  
Constant Current Charging ◽  
Unit Pulse ◽  
Lead Acid

Based on pulse fast charge of the lead acid battery, this paper designed a kind of intelligent battery charger, including mainly a minimum system of 16 bit MCU as intelligent center, the constant resistance discharge unit to complete SOC prediction and duty cycle of the pulse charging waveform, the voltage-current-temperature measurement unit, pulse charging control unit. The duty cycle of this charger agreed with SOC of the battery, then using short floating charge in the later stage, thus greatly optimizing the pulse charging mode. Finally, compared with the conventional constant voltage and constant current charging, the charger greatly reduced the charging time.

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