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A lithium-ion battery is an combination of Base elements in serie and/or in parallel (XSYP). A battery falls into a Category which refers to its geometrical shape.

There are 4 Category levels.

 

Category level #1: cells

Cylindrical cells, pouch cells and prismatic cells fall into this first level. They are simple cells (1S1P).
 

 

Category level #2: modules

Battery modules and Rack-mount modules fall into this second level. They are made from simple cells combined in serie and/or in parallel (XSYP). A rack-mount module is a battery module specially designed to be racked in order to save space (PVSyst will consider equally those 2 categories during the simulation). The base element of those batteries is the cell.

 

 

Category level #3: cabinets&racks

Battery modules and Rack-mount modules may be further combined in serie and/or in parallel to build higher voltage and/or higher capacity packages. Those packages will fall either into the cabinet category - when a battery modules is the base element of the package - or into the Rack category -when the base element is a rack-mount module (PVSyst will consider equally those 2 categories in the system). The base element is either the Battery module or the Rack-mount module.

 

 

Category level #4: the container

Once again, Cabinets and Racks may be further combined in serie and/or in parallel and then disposed into a container. The base element is either the Cabinets or the rack.

Containers are not considered as "components" in the PVsyst database: they will be specified as a number of racks in series/parallel in the framework of the system definition.