Patent ID: 9124137
Filing Date: 2015-09-01
Classification: H02J,Y04S

Abstract:
1. An energy management system connected between a power supply system and at least one load, wherein the power supply system comprises a grid power source, a renewable energy generation module and an energy storage module, the energy management system comprises: a power monitoring module connected to the power supply system to retrieve energy-supplying information of the power supply system, wherein the energy-supplying information comprises an energy production of the renewable energy generation module; a switch module to control a connection relation between the load and the power supply system; a load management module to retrieve load information of the load; and an intelligent control module to receive the energy-supplying information and the load information to instantly calculate a first energy threshold and a second energy threshold smaller than the first energy threshold; wherein when the energy production of the renewable energy generation module is smaller than or equal to the second energy threshold, the intelligent control module controls the switch module so that the grid power source or the energy storage module supplies energy to the load; when the energy production is between the first and the second energy thresholds, the intelligent control module controls the switch module so that the renewable energy generation module supplies energy to the load; and when the energy production is larger than the first energy threshold, the intelligent control module controls the switch module so that the renewable energy generation module supplies energy to the load and charges the energy storage module, wherein the energy-supplying information comprises an amount of stored energy in the energy storage module, in which when the energy production is smaller than or equal to the second energy threshold, the intelligent control module controls the switch module according to the amount of the stored energy, when the amount of stored energy is larger than a first energy storage threshold, the intelligent control module controls the switch module so that the energy storage module supplies energy to the load and the renewable energy generation module charges the energy storage module, and when the amount of the stored energy is smaller than or equal to the first energy storage threshold, the intelligent control module controls the switch module so that the grid power source supplies energy to the load and the renewable energy generation module charges the energy storage module.