INGAR   05399
INSTITUTO DE DESARROLLO Y DISEÑO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Solar microgeneration and accumulation in Lithium ion Batteries. Simplified phenomenological model
Autor/es:
E. R. HENQUÍN, P. A. AGUIRRE
Lugar:
Buenos Aires
Reunión:
Congreso; 20th Topical Meeting of the International Society of Electrochemistry,; 2017
Institución organizadora:
International Society of Electrochemistry,
Resumen:
Electricity storage is an important problem of discontinuous sources of energy such as solar and wind. The potential of lithium ions batteries has been extensively tested in small devices, since its creation. This has attracted the attention of several manufacturers in the world to achieve the same performance in electric or hybrid vehicles and in stationary applications such as energy storage houses, public buildings and even neighbourhoodsHowever, the net effect of these systems depends critically on the design of the device power consumption, technological design of the battery, the time pattern of delivery of power, recharge times and capabilities of batteries re-charging systems.To analyze these interactions and to provide results that can generate applicable technologies in different areas, it is desirable to have mathematical models that integrate the phenomenological description of lithium ion batteries, with computer models of recharging a battery pack as well as mathematical models of power distribution logistics.Argentina is one of the most important global reserves of lithium mineral. In previous years, a phenomenological simplified, flexible and robust mathematical model to represent all temporary physico-chemical phenomena produced in a battery (voltage cell, potentials, overpotential, reaction rates, concentrations), and can be solved even in a spreadsheet [1], has been developed. More recently, a mathematical model, also simplified and based on [1], but considering that the electrodes of the lithium battery is composed by a particle size distribution [2] has been shown. When considering more than one particle size, temporary responses of all physicochemical properties of the battery, changes drastically. On the other hand, the evaluation of energy use in a typical Canadian household connected to the electricity grid and equipped with a system of microgeneration, comprising: a stiling Motor, coupled to a set of lithium batteries 2kW and 6kWh, [3], was made. The mathematical model used for this study, has no easy solution because of the highly nested differential equations and nonalgebraic boundary conditions.In this paper, simplified models [1] and [2] are used to perform the energy analysis and to assess the autonomy and performance of battery LiPO4Fe connected to the power grid and a solar panel. Consumption curves and solar panel generation shown above are average curves countries of South America in summer. Based on these curves, the energy necessary for the operation of the home, and the battery size are calculated.[1] AIChE J., 61: 90?102.[2] Phenomenological Model-Based Analysis of Lithium Batteries Considering Particle Size Distribution. AIChE J. In press.[3] Applied Energy 111 (2013) 853?861.