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Energy storage system

A technology of energy storage system and photovoltaic system, applied in the field of energy storage system, can solve the problems of waste of electricity, not allowing electricity to be sent back to the grid, unable to install energy storage system, etc., to avoid waste of electricity and overcome the effect of high cost

Inactive Publication Date: 2020-01-07
ZHEJIANG INTEPOWER ELECTRONIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The energy storage system needs to be installed at the same time as the photovoltaic module, and the energy storage system cannot be installed for the existing photovoltaic system
In addition, the existing photovoltaic system is usually a grid-connected system, and the excess electricity generated by it is sent to the grid, but most areas do not allow electricity to be sent back to the grid. Back-to-grid creates constraints, resulting in wasted electricity

Method used

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Embodiment Construction

[0031] The core of the present application is to provide an energy storage system that is independent from the photovoltaic system and can realize efficient utilization of the power generation of the photovoltaic system.

[0032] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0033] Please refer to figure 1 , figure 1 A schematic diagram of an energy storage system provided in the embodiment of this ap...

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Abstract

The invention discloses an energy storage system, which comprises a main controller, a lithium battery, a charger, an inverter and a current sensor. The current sensor is used for detecting electric power parameters; the charger is used for converting alternating current into direct current and charging the direct current into the lithium battery; the inverter is used for converting the direct current released by the lithium battery into alternating current and outputting the alternating current; and the main controller is used for analyzing photovoltaic system power generation and load powerconsumption conditions, starts the charger to charge the excessive power into the lithium battery when the power generation amount of the photovoltaic system is excessive, starts the lithium battery to release the power stored in the lithium battery for a load to use when the power generation amount of the photovoltaic system is insufficient, and adjusts the charging and discharging power according to power parameters. The energy storage system can be independent of the photovoltaic system and can realize efficient utilization of the generating capacity of the photovoltaic system.

Description

technical field [0001] The present application relates to the field of electric power technology, in particular to an energy storage system. Background technique [0002] At present, multiple photovoltaic modules in a photovoltaic energy storage system are connected in series and then connected to the grid through an energy storage system. The energy storage system includes an inverter charging integrated machine and a battery. The energy storage system needs to be installed at the same time as the photovoltaic modules, and the energy storage system cannot be installed for the existing photovoltaic system. In addition, the existing photovoltaic system is usually a grid-connected system, and the excess electricity generated by it is sent to the grid, but most areas do not allow electricity to be sent back to the grid. Back-to-grid creates constraints, resulting in wasted electricity. [0003] In view of this, how to solve the above technical defects has become a technical p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/32
CPCH02J3/32Y02E10/56Y02E70/30
Inventor 周懂明周宇峰罗宇浩
Owner ZHEJIANG INTEPOWER ELECTRONIC CO LTD
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