Lithium-Ion Battery Base Model in 1D
Application ID: 18437
This application example is useful for investigation of the following:
polarization (voltage drop),
state-of-charge (SOC), and
in lithium-ion batteries under isothermal conditions.
Some of the listed properties play an important role in battery management systems (BMS) in, for instance, electric and hybrid electric vehicles (see figure). The more properties that can be monitored accurately, the easier it is to manage the battery in a manner maximizing energy output and lifetime, and guaranteeing safety.
For battery manufacturers, the same properties can be looked upon when optimizing the design of the battery, for example choice of materials and thickness of electrodes.
This model setup is done in the Lithium-Ion Battery interface with Initial Cell Charge Distribution feature and incorporates mainly default physical properties. The material properties are taken from the Batteries & Fuel Cells Material Library.
For running the model you only need to decide upon which initial cell voltage (or initial cell SOC), battery capacity, and thicknesses of electrodes and separator you want.
This model example illustrates applications of this type that would nominally be built using the following products:
however, additional products may be required to completely define and model it. Furthermore, this example may also be defined and modeled using components from the following product combinations:
The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Specification Chart and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.