scholarly journals Lithium-Ion Battery SoC Equilibrium: An Artificial Potential Field-Based Method

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5691
Author(s):  
Hongtao Liao ◽  
Fu Jiang ◽  
Cheng Jin ◽  
Yue Wu ◽  
Heng Li ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Potential Field ◽  
Lithium Ion ◽  
Artificial Potential Field ◽  
Control Law ◽  
Efficient Operation ◽  
Virtual Force ◽  
Communication Topology ◽  
Charging Current ◽  
Circuit Components

Battery balance methods are the key technology to ensure the safe and efficient operation of the energy storage systems. Nevertheless, convenient balance methods experience slow convergence and difficult to adapt to quick charging applications. To solve the problem, in this paper, an artificial potential field-based lithium-ion battery balance method is proposed. Firstly, a cyber-physical model of the battery equalization system is proposed, in which the physical layer models the circuit components and the cyber layer represents the communication topology between the batteries. Then the virtual force function is established by artificial potential field to attract the voltage and state-of-charge of each cell to nominal values. With a feedback control law, the charging current of the battery is reasonably distributed to realize the rapid balance among batteries. The experimental results verify the effectiveness and superiority of the proposed method.

scholarly journals An Artificial Potential Field-Based Lithium-ion Battery SOC Equilibrium Method in Electric Vehicles

2020 ◽  
Vol 53 (2) ◽  
pp. 12682-12687
Author(s):  
Fu Jiang ◽  
Cheng Jin ◽  
Hongtao Liao ◽  
Heng Li ◽  
Yue Wu ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Electric Vehicles ◽  
Potential Field ◽  
Lithium Ion ◽  
Artificial Potential Field ◽  
Equilibrium Method

An Active Equalizer for Serially Connected Lithium-Ion Battery Cells

2013 ◽  
Vol 732-733 ◽  
pp. 809-812 ◽  
Author(s):  
Hong Rui Liu ◽  
Chao Ying Xia
Keyword(s):  
Lithium Ion Battery ◽  
Lithium Ion ◽  
State Of Charge ◽  
Experimental Results ◽  
Battery Cell ◽  
Charging Current ◽  
In Series ◽  
Battery Cells

This paper proposes an equalizer for serially connected Lithium-ion battery cells. The battery cell with the lowest state of charge (SOC) is charged by the equalizer during the process of charging and discharging, and the balancing current is constant and controllable. Three unbalanced lithium-ion battery cells in series are selected as the experimental object by this paper. The discharging current under a certain UDDS and 20A charging current are used to complete respectively one time balancing experiment of discharging and charging to the three lithium-ion battery cells. The validity of the balancing strategy is confirmed in this paper according to the experimental results.

scholarly journals Design of Connectivity Preserving Flocking Using Control Lyapunov Function

2016 ◽  
Vol 2016 ◽  
pp. 1-12
Author(s):  
Bayu Erfianto ◽  
Riyanto T. Bambang ◽  
Hilwadi Hindersah ◽  
Intan Muchtadi-Alamsyah
Keyword(s):  
Lyapunov Function ◽  
Potential Field ◽  
Control Design ◽  
Artificial Potential Field ◽  
Control Input ◽  
Control Lyapunov Function ◽  
Communication Topology ◽  
The Common ◽  
Flocking Motion

This paper investigates cooperative flocking control design with connectivity preserving mechanism. During flocking, interagent distance is measured to determine communication topology of the flocks. Then, cooperative flocking motion is built based on cooperative artificial potential field with connectivity preserving mechanism to achieve the common flocking objective. The flocking control input is then obtained by deriving cooperative artificial potential field using control Lyapunov function. As a result, we prove that our flocking protocol establishes group stabilization and the communication topology of multiagent flocking is always connected.

Study on the Charging Characteristics of Lithium-Ion Batteries for Electric Vehicles Regenerative Braking

2013 ◽  
Vol 853 ◽  
pp. 389-394
Author(s):  
Shi Gang Song ◽  
Xiao Ping Li ◽  
Ze Chang Sun
Keyword(s):  
Lithium Ion Battery ◽  
Electric Vehicles ◽  
Energy Recovery ◽  
Lithium Ion ◽  
Regenerative Braking ◽  
Coupling Mechanism ◽  
Charging Current ◽  
Model Efficiency ◽  
Recovery Models ◽  
The Impact

In order to evaluate the lithium-ion battery charging during electric vehicles regenerative braking, by testing on different initial SOC, charging current and temperature, the charging curves of lithium-ion battery are drawn under different conditions, and various parameters are derived. Based on a single factor in the impact of change on energy recovery, analyzed the influencing factors of coupling mechanism. Get approximation functions between energy recovery and multi-factor using multiple regression analysis method, and built energy recovery models. According to some experimentation with measured value and the calculated value, indicated the set of polynomials energy recovery model efficiency.

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