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Energy storage system, charge control device for photovoltaic energy storage, and control method of charge control device

A charging control, photovoltaic energy storage technology, applied in photovoltaic power generation, current collectors, electric vehicles, etc., to achieve the effects of simple structure, increased power storage, and improved charging efficiency

Inactive Publication Date: 2016-08-24
深圳智慧能源技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the research, the system effect of battery internal resistance and state of charge, a pair of related variables, has not been fully valued. The industry hopes to find a technology that can increase the system's stored power, effectively prolong the service life of the battery pack, and reduce the system's power generation cost. Program

Method used

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  • Energy storage system, charge control device for photovoltaic energy storage, and control method of charge control device
  • Energy storage system, charge control device for photovoltaic energy storage, and control method of charge control device
  • Energy storage system, charge control device for photovoltaic energy storage, and control method of charge control device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Design a low-power photovoltaic energy storage charging control equipment, and use this equipment together with two 12V100Ah lead-acid maintenance-free batteries and 200W photovoltaic modules to form a photovoltaic energy storage system.

[0070] The charging control device includes a measurement and control device 2, a photovoltaic input terminal 3, a power output interface 5, a photovoltaic collection device 6, and a patrol device 12. The measurement and control device 2 is electrically connected to the power output terminal of the photovoltaic module 1 through the photovoltaic input terminal 3; the patrol device The signal input terminals of 12 are respectively connected to the two ends of two storage batteries (battery modules), and the signal output terminals are connected to the measurement and control device 2; The switch connects the three external terminals of the two batteries connected in series, that is, respectively connects the two ends of the battery pack ...

Embodiment 2

[0078] Change the two 12V100Ah lead-acid maintenance-free storage batteries described in Example 1 into four 6V100Ah lead-acid maintenance-free storage batteries, and connect the four batteries in series to form the two extremes of the storage battery pack 4 and the three series taps in the middle, totaling five The external terminal; the power output interface 5 is correspondingly composed of 5 electronically controlled logic switches, and the measurement and control device 2 is respectively connected to the two extremes of the battery pack with 4 batteries connected in series and the middle 3 series tap terminals through the 5 electrically controlled logic switches. The connection method of the 5 electronically controlled logic switches and the 5 external terminals of the battery pack connected in series, and the remaining connection methods of the photovoltaic energy storage charging control device and the energy storage system are similar to those in Embodiment 1.

[0079] ...

Embodiment 3

[0081]Embodiment 2 is further modified, and four 6V100Ah lead-acid maintenance-free batteries are replaced by twelve 2V100Ah single lead-acid batteries. The external terminal of the battery module; the power output interface 5 is correspondingly designed to consist of 13 electronically controlled logic switches.

[0082] In this embodiment, the 13 electronically controlled logic switches of the power supply output interface 5 perform corresponding on / off combinations under the programming control of the measurement and control device 2, so that the charging intensity of the single battery can be realized under the state of weaker light energy. Indirect improvement, further utilizing the electric energy obtained by photovoltaic modules in low-light environment, and at the same time, charging 12 single batteries with time distribution and even distribution, so as to achieve the purpose of effective battery maintenance.

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Abstract

The present invention discloses an energy storage system, a charge control device for photovoltaic energy storage, and a control method of the charge control device. The charge control device includes a monitor and control apparatus, a photovoltaic input end, a power output interface, a photovoltaic acquisition apparatus and a patrol apparatus. The monitor and control apparatus is connected to the photovoltaic input end and the power output interface. The photovoltaic acquisition apparatus is connected to the photovoltaic input end and the monitor and control apparatus. The power output interface includes a plurality of electric control logic switches, is connected to two ends of a storage battery pack for photovoltaic energy storage and is in series connection with a tap end. The patrol apparatus is connected to the monitor and control apparatus and a controlled battery module. The energy storage system includes a photovoltaic component, a storage battery pack and a system control apparatus, and includes at least one set of charge control device. The storage battery is charged intelligently when the charge control device changes a combination state of the power output interface under a set control logic. A service life of the storage battery of the photovoltaic energy storage system is prolonged, and energy storage amount of the system is increased.

Description

technical field [0001] The invention relates to the design field of photovoltaic energy storage systems, in particular to a charging control device for photovoltaic energy storage, an energy storage system containing the device and a control method thereof. Background technique [0002] Photovoltaic application is a hot spot in the development of new energy. Photovoltaic modules, also commonly known as solar cells, are a technology that uses the photovoltaic effect of the semiconductor interface to directly convert light energy into electrical energy; narrowly defined photovoltaic power generation systems refer to photovoltaic modules, controllers and inverters. The three parts of the inverter do not involve the battery and mechanical parts. [0003] Photovoltaic power generation systems are divided into independent photovoltaic power generation systems, grid-connected photovoltaic power generation systems and distributed photovoltaic power generation systems, among which in...

Claims

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Application Information

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IPC IPC(8): H02J7/35H02J7/00
CPCH02J7/0013H02J7/35Y02E10/56
Inventor 刘粤荣陈方
Owner 深圳智慧能源技术开发有限公司
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