scholarly journals Design of Rapid Energy-saving Intelligent Fast Charging Device

2016 ◽  
Vol 10 (1) ◽  
pp. 58-68
Author(s):  
Zhang Lefang ◽  
Li Xiaohong ◽  
Ren Zhihong
Keyword(s):  
Energy Saving ◽  
Software Process ◽  
Constant Voltage ◽  
Charging Time ◽  
Pulse Charging ◽  
Fast Charging ◽  
Low Charge

As known that the traditional DC constant voltage charging equipment not only can cause the battery overcharge or insufficient charging, but also the charging time is too long. In the paper, based on the theory of pulse charging method and the design of the pulsed fast intelligent charging equipment is presented, the implementation of hardware and software process of the system is given out, the analysis of the results show that it can effectively prevent overcharge and low charge phenomenon in the charging process of battery.

Surrogate Model Assisted Lithium-Ion Battery Co-Design for Fast Charging and Cycle Life Performances

2020 ◽  
Author(s):  
Tonghui Cui ◽  
Zhuoyuan Zheng ◽  
Pingfeng Wang
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Cycle Life ◽  
Design Approach ◽  
Design Framework ◽  
Coupling Effects ◽  
Charging Time ◽  
Battery Design ◽  
Fast Charging

Abstract As one of the significant enablers of portable devices and electric vehicles, lithium-ion batteries are drawing much attention for their high energy density and low self-discharging rate. A major hindrance to their further development has been the “range anxiety”, that fast-charging of Li-ion battery is not attainable without sacrificing battery life. In the past, much effort has been carried out to resolve such a problem by either improve the battery design or optimize the charging/discharging protocols, while limited work has been done to address the problem simultaneously, or through a control co-design framework, for a system-level optimum. The control co-design framework is ideal for lithium-ion batteries due to the strong coupling effects between battery design and control optimization. The integration of such coupling effects can lead to improved performances as compared with traditional sequential optimization approaches. However, the challenge of implementing such a co-design framework has been updating the dynamics efficiently for design variations. In this study, we optimize the charging time and cycle life of a lithium-ion battery as a control co-design problem. Specifically, the anode volume fraction and particle size, and the corresponding charging current profile are optimized for a minimum charging time with health-management considerations. The battery is modeled as a coupled electro-thermal-aging dynamical system. The design-dependent dynamics is parameterized thru a Gaussian Processes model, that has been trained with high-fidelity multiphysics simulation samples. A nested co-design approach was implemented using direct transcription, which achieves a better performance than the sequential design approach.

scholarly journals Perceived Usage Potential of Fast-Charging Locations

2018 ◽  
Vol 9 (1) ◽  
pp. 14 ◽  
Author(s):  
Julia Krause ◽  
Stefan Ladwig ◽  
Lotte Saupp ◽  
Denis Horn ◽  
Alexander Schmidt ◽  
...  
Keyword(s):  
Electric Vehicles ◽  
Point Of View ◽  
Charging Infrastructure ◽  
Charging Time ◽  
Points Of Interest ◽  
Fast Charging ◽  
Business Perspective ◽  
Charging Stations ◽  
User Perspectives ◽  
Model Point

Fast-charging infrastructure with charging time of 20–30 min can help minimizing current perceived limitations of electric vehicles, especially considering the unbalanced and incomprehensive distribution of charging options combined with a long perceived charging time. Positioned on optimal location from user and business perspective, the technology is assumed to help increasing the usage of an electric vehicle (EV). Considering the user perspectives, current and potential EV users were interviewed in two different surveys about optimal fast-charging locations depending on travel purposes and relevant location criteria. The obtained results show that customers prefer to rather charge at origins and destinations than during the trip. For longer distances, charging locations on axes with attractive points of interest are also considered as optimal. From the business model point of view, fast-charging stations at destinations are controversial. The expensive infrastructure and the therefore needed large number of charging sessions are in conflict with the comparatively time consuming stay.

The Design of Fast Charge and Energy-Saving Charge System of Battery

2013 ◽  
Vol 631-632 ◽  
pp. 1211-1214
Author(s):  
Xin Yuan Meng ◽  
Chao Zhang ◽  
Chao Wei Duan
Keyword(s):  
Energy Saving ◽  
Power Supply ◽  
Power Conversion ◽  
Pulsed Discharge ◽  
Charge System ◽  
Battery Charging ◽  
Fast Charge ◽  
Fast Charging ◽  
Circuit Structure

This thesis is based on the battery theories and the technologies of battery charging. On the design of fast charging and energy-saving system of battery, it combines the features of pulsed charge and the rapid interrupt charge methods, and simplifies the circuit structure of the power supply, which reduces the loss of energy and enhances the efficiency of power conversion. It also uses capacitors for storing the energy of the pulsed discharge, and then charging back to the battery, so as to achieve both the aims of fast charging and energy saving.

scholarly journals CC-CV Controlled Fast Charging Using Fuzzy Type-2 for Battery Lithium-Ion

2021 ◽  
Vol 5 (2) ◽  
Author(s):  
Ahmad Zidan Falih ◽  
Mohammad Zaenal Efendi ◽  
Farid Dwi Murdianto
Keyword(s):  
Energy Storage ◽  
Solar Energy ◽  
Alternative Energy ◽  
Lithium Ion ◽  
Buck Converter ◽  
Constant Current ◽  
Constant Voltage ◽  
Battery Lifetime ◽  
Fast Charging

Energy dependency is increasing along with the increase in population growth rate, while the fossil energy is decreasing. Alternative energy such as solar energy is one solution to provide renewable energy, but solar energy cannot provide an intense supply of energy. Therefore, the equipment needs an energy storage. The battery has important role in energy storage with the performance of the battery that need an attention. The method and type of battery used  must be considered to maintain battery lifetime and  reduce overcharging. The purpose of this research is to understand the process of fast charging the CC-CV (Constant Current Constant Voltage) method on Lithium-Ion battery which is expected to reduce battery overcharging. In this method, the current is maintained constant until certain conditions then followed by constant voltage to prevent overcharging. The voltage from the solar panel is very high, voltage reduction is needed as the charging voltage for the battery. The DC-DC Converter used is Buck Converter which is given Fuzzy Type-2 algorithm to maintain a current of 10 Ampere during CC conditions and  a voltage of 14.4 Volt during CV conditions with switch of CC conditions to CV conditions on SoC 99.25%.Keywords: battery charging, buck converter, CC-CV, lithium-ion, type-2 fuzzy.

scholarly journals Automatic Design of Battery Charging System Power Supply from Photovoltaic Sources Base on Voltage

2021 ◽  
Vol 2117 (1) ◽  
pp. 012011
Author(s):  
S Triwijaya ◽  
A Pradipta ◽  
T Wati
Keyword(s):  
Power Supply ◽  
Control Method ◽  
Automatic Design ◽  
Constant Voltage ◽  
Battery Charging ◽  
Charging System ◽  
Charging Time ◽  
Control Scheme ◽  
Charging Control ◽  
System Power

Abstract Short charging times are desirable from a battery powered system. However, the short charging time must also be considered the reliability of the system. Where the short charging time does not cause damage to the control system and battery. The battery has an important role as a source of power supply when the sun is not bright. By minimizing battery charging time, the battery can be maximally utilized as a power store. So the minimum charging time is obtained, but with maximum storage power. We present battery charging control method and auto switch off on this system. The controller is based on a constant voltage (CV) charge control scheme. In order to keep the parameters constant, this research prototype uses a DC-DC controller. The experimental results show that, the new controller charging period is significantly reduced. Moreover, the proposed controller has high accuracy and minimized battery overcharging.

Economic Analysis of On-Route Fast Charging for Battery Electric Buses: Case Study in Utah

2019 ◽  
Vol 2673 (5) ◽  
pp. 119-130 ◽  
Author(s):  
Zhaocai Liu ◽  
Ziqi Song ◽  
Yi He
Keyword(s):  
Economic Analysis ◽  
Operating Time ◽  
Capital Costs ◽  
Charging Time ◽  
Fast Charging ◽  
Driving Range ◽  
Transit Agencies ◽  
Battery Technology ◽  
Charging Stations ◽  
The Impact

Battery electric buses (BEBs) are increasingly being embraced by transit agencies as an energy-efficient and emission-free alternative to bus fleets. However, because of the limitations of battery technology, BEBs suffer from limited driving range, great battery cost, and time-consuming charging processes. On-route fast charging technology is gaining popularity as a remedy, reducing battery cost, extending driving range, and reducing charging time. With on-route fast charging, BEBs are as capable as their diesel counterparts in relation to range and operating time. However, transit agencies may have the following concerns about on-route fast charging: 1) on-route fast charging stations require massive capital costs; 2) on-route fast charging may lead to high electricity power demand charges; and 3) charging during peak hours may increase electricity energy charges. This study conducts a quantitative economic analysis of on-route fast charging for BEBs, thereby providing some guidelines for transit agencies. An integrated optimization model is first proposed to determine battery size, charger type, and recharging schedule for a general BEB route. Based on the model, an economic analysis of on-route fast charging is then performed on 10 real-world bus routes and a simplified general bus route with different parameters. The results demonstrate that given the current prices of on-route fast charging stations and batteries, it is always beneficial to install on-route fast charging stations for BEBs. A sensitivity analysis is also conducted to show the impact of potential price reductions of batteries.

Research of Pulse Current Charge Method for all Vanadium Redox Battery

2014 ◽  
Vol 971-973 ◽  
pp. 1121-1124
Author(s):  
Zhen Dong Sun ◽  
Sen Wang ◽  
Ye Qin ◽  
Jian Guo Liu ◽  
Chuan Wei Yan
Keyword(s):  
Pulse Current ◽  
Constant Voltage ◽  
Vanadium Redox Battery ◽  
Battery Charging ◽  
Discharge Performance ◽  
Pulse Charging ◽  
Discharge Efficiency ◽  
Vanadium Redox ◽  
Charge Discharge

From the perspective of vanadium battery charging-discharge efficiency, studies vanadium battery charging method by a series of charging and discharging tests, based on the principle of pulse, an pulse charging method with constant-voltage was introduced, compared with other charge method,the proposed method got the Stable discharge performance and the better charge-discharge efficiency.

scholarly journals Fast-charging Blumlein pulse forming line

1997 ◽  
Vol 15 (2) ◽  
pp. 249-257 ◽  
Author(s):  
K. Masugata ◽  
S. Tsuchida ◽  
H. Saitou ◽  
K. Yatsui ◽  
K. Shibata ◽  
...  
Keyword(s):  
Pulse Length ◽  
Output Pulse ◽  
Energy Transfer Efficiency ◽  
Pulsed Power ◽  
Marx Generator ◽  
Output Pulse Energy ◽  
Charging Time ◽  
Fast Charging ◽  
Charging Energy ◽  
A Current

A fast-charging, discharge-switch-free Blumlein pulse forming line has been developed for high-voltage pulsed power generation. In the BL, a saturable charging inductor (CI) of amorphous metallic core is utilized and, as a result, fast-charging (charging time ≈220 ns) is obtained with a reduced prepulse. In addition, by using CI as a step-up transformer, the impedance of the output pulse can be converted to 4Z, Z, Z/4. By using the BL with a Marx generator of 300 kV and 1.1 kJ, an output of —580 kV at 24 kA and a pulse length of 60 ns are obtained, with a current rise time of less than 16 ns. The energy transfer efficiency of the line (output pulse energy/charging energy of a pulse forming line) is evaluated to be more than 92%.

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