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Charging measuring and control equipment for photovoltaic energy storage, energy storage system and control method thereof

A technology of measurement and control equipment and photovoltaic energy storage, which is applied in photovoltaic power generation, current collectors, electric vehicles, etc., to achieve the effects of increased power storage, diversified combinations, and simple structure

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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  • Charging measuring and control equipment for photovoltaic energy storage, energy storage system and control method thereof
  • Charging measuring and control equipment for photovoltaic energy storage, energy storage system and control method thereof
  • Charging measuring and control equipment for photovoltaic energy storage, energy storage system and control method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0067] Design a low-power photovoltaic energy storage charging measurement and 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.

[0068] The charging measurement and control equipment includes a measurement and control device 2, a photovoltaic input terminal 3, a power output interface 5 and a photovoltaic acquisition device 6. 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; control logic switch, the measurement and control device 2 is connected to the three external terminals of the two batteries in series through the three electric control logic switches of the power output interface 5, that is, the two ends of the battery pack 4 connected in series with the two batteries in series and the two batteries in series The middle tap end...

Embodiment 2

[0075] 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 rest of the connection methods of the photovoltaic energy storage charging measurement and control equipment and the energy storage system are similar to those in Emb...

Embodiment 3

[0079] 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.

[0080] 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 invention discloses charging measuring and control equipment for photovoltaic energy storage, an energy storage system and a control method thereof. The charging measuring and control equipment comprises a measuring and control device, a photovoltaic input end, a power output interface and a photovoltaic acquisition device; the measuring and control device is connected with the photovoltaic input end and the power output interface; the photovoltaic acquisition device is connected with the photovoltaic input end and the measuring and control device; the power output interface is composed of a plurality of electronic control logic switches, and is connected with the two ends of a storage battery for photovoltaic energy storage and a series tap end of the storage battery; the energy storage system comprises a photovoltaic module, the storage battery and a system control device, and comprises at least one set of the charging measuring and control equipment; and the charging measuring and control equipment realizes a conversion of the composite state of the power output interface under a set measurement and control logic, so as to realize intelligent charging of a storage battery. The charging measuring and control equipment for photovoltaic energy storage, the energy storage system and the control method thereof provided by the invention can prolong the service life of a storage battery of the photovoltaic energy storage system, and increase the electricity storage capacity of the system.

Description

technical field [0001] The invention relates to the design field of photovoltaic energy storage systems, in particular to a charging measurement and 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...

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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