Double-loop household photovoltaic energy storage system and power supply method thereof
A photovoltaic energy storage and dual-circuit technology, which is applied in photovoltaic power generation, current collectors, electric vehicles, etc., can solve problems such as greater impact on the stability of photovoltaic energy storage systems, power outages at the user side, and impacts on normal electricity consumption by users
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Embodiment 1
[0031] Such as figure 1 As shown, a dual-circuit household photovoltaic energy storage system includes a mains input line 1, a photovoltaic module 2, an energy storage device 3, an inverter 4, a switching converter 5 and a user end 6, a photovoltaic module 2, a storage The energy devices 3 are all electrically connected to the inverter 4, the inverter 4 is electrically connected to the mains input line 1, the mains input line 1, and the inverter 4 are both electrically connected to the switching converter 5, and the electric energy of the switching converter 5 The output terminal 53 is electrically connected to the user terminal 6 , and the switching converter 5 is used to automatically switch the AC power flowing out from the mains input line 1 and the inverter 4 so as to supply power to multiple user terminals 6 . In operation, 1. When the inverter 4 is working normally, the switching converter 5 connects the inverter 4 and the user terminal 6, and the photovoltaic module 2 ...
Embodiment 2
[0042] Such as figure 1 As shown, a power supply method for a dual-circuit household photovoltaic energy storage system in Embodiment 1 includes the following steps:
[0043] When there is sufficient light, the photovoltaic module 2 generates power, and the inverter 4 converts the direct current output by the photovoltaic into alternating current to supply power to the user terminal 6;
[0044] When the output power of the photovoltaic module 2 is greater than the power consumption of the user end 6, the photovoltaic module 2 stores the excess electricity into the energy storage device 3 through the inverter 4;
[0045] When the light is insufficient, the photovoltaic module 2 stops discharging, and at this time the energy storage device 3 supplies power, and the inverter 4 converts direct current into alternating current to supply power to the user terminal 6;
[0046] When the photovoltaic module 2 and the energy storage device 3 stop supplying power, the inverter 4 switche...
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