Photovoltaic energy storage device, cabinet and photovoltaic energy storage system

摘要

A photovoltaic energy storage device includes a first insulation compartment 101 containing a battery module group 1, a battery switching device 2, an energy management system (EMS) controller 3 and a second insulation compartment 102 containing a DC circuit breaker 4, an inverter 5 and an AC circuit breaker 6. A thermal-protective coating 103, which may be a metal plate insulation baffle and/or a heat insulation cotton material, is arranged between the compartments and can prevent heat convection and heat exchange. The batteries may comprise two module groups, and one may have the same of fewer batteries that the other, the former may allow for the battery switch to be placed. Also disclosed is a cabinet with two insulation compartments and which might house the energy storage device. The cabinet is shown in figures 3 having two doors (201, 202) to a first compartment and one door (203) to the second compartment. Ventilation openings may be provided in the doors and the cabinet to allow ventilation as the arrows of figure 4 show.