CN214154120U - Photovoltaic UPS lithium battery energy storage system - Google Patents

Photovoltaic UPS lithium battery energy storage system Download PDF

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Publication number
CN214154120U
CN214154120U CN202022340201.XU CN202022340201U CN214154120U CN 214154120 U CN214154120 U CN 214154120U CN 202022340201 U CN202022340201 U CN 202022340201U CN 214154120 U CN214154120 U CN 214154120U
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Prior art keywords
module
detection module
lithium battery
voltage
photovoltaic
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林广宙
林庆德
林靖佳
李知斌
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Guangxi Yangsheng New Energy Co ltd
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Guangxi Yangsheng New Energy Co ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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Abstract

The utility model discloses a photovoltaic UPS lithium battery energy storage system, which comprises a plurality of lithium battery packs of lithium batteries, a photovoltaic module, a grid-connected inverter, a dual-power automatic transfer switch, an electric energy meter, a lithium battery management system, a battery pack balancing device and a power management module; the lithium battery management system comprises a CPU, a voltage detection module, a current detection module, a temperature detection module, an ampere-hour integral estimation module, an open-circuit voltage estimation module, a storage module and a display module; the voltage detection module, the current detection module and the temperature detection module are respectively connected with each lithium battery; the open-circuit voltage estimation module is respectively connected with the voltage detection module and the temperature detection module; the ampere-hour integral estimation module is respectively connected with the current detection module and the temperature detection module. The utility model discloses uninterrupted power supply manages every lithium cell, acquires the comparatively accurate surplus of battery of lithium cell, carries out accurate photovoltaic for the lithium cell and charges or discharge, prevents to overcharge and cross to put.

Description

Photovoltaic UPS lithium battery energy storage system
Technical Field
The utility model relates to a photovoltaic energy storage field, more specifically relates to a photovoltaic UPS lithium cell energy storage system.
Background
The development of the energy storage technology plays an important role in applications of small-sized terminal consumer products such as electric vehicles, unmanned planes, smart phones and smart watches, large-sized terminal consumer products such as communication base stations, distributed micro-grids and renewable energy power generation systems. The minimum energy storage unit of the energy storage technology is a battery, and a lithium battery in a current common energy storage battery has the advantages of high energy density, long service life, stable work and the like, so that the current energy storage battery is the mainstream choice. Nowadays, solar photovoltaic power generation has very broad prospect, novel environmental protection, renewable and pollution-free solar energy, the energy value radiated to the earth surface of people every year is 3.5 ten thousand times of the total energy consumption of the world at present, and the solar photovoltaic power generation is an inexhaustible source.
Photovoltaic power generation technology is a new clean energy industry, develops rapidly in recent years, and compared with traditional energy, the photovoltaic power generation technology has the advantages of environmental protection, reusability and the like. UPS has been widely used in industrial production and in various situations of residential life as a breakpoint protection device for important loads. The advantages of the photovoltaic lithium battery and the UPS can be better played by combining the photovoltaic lithium battery and the UPS, and the maximum utilization of resources is realized. Once the UPS is put into operation, no matter what mode the UPS is in, the UPS supplies power to important equipment, and the power supply cannot be interrupted, so that the UPS can be automatically and rapidly replaced to adapt to the requirement of uninterrupted power supply when the commercial power or the battery is required to supply power; the condition of the lithium battery, especially the more accurate surplus of battery is mastered to carry out accurate photovoltaic charging or discharging for the lithium battery, prevent to overcharge overdischarge.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve the technical problem of description in the background art, provide an uninterrupted power supply, manage every lithium cell, acquire the comparatively accurate battery surplus of lithium cell, carry out accurate photovoltaic charging or discharge for the lithium cell, prevent to overcharge the photovoltaic UPS lithium cell energy storage system who puts.
In order to solve the problems, the photovoltaic UPS lithium battery energy storage system comprises a plurality of lithium battery packs of lithium batteries, a photovoltaic module, a grid-connected inverter, a dual-power automatic transfer switch, an electric energy meter, a lithium battery management system, a battery pack balancing device and a power supply management module; the lithium battery management system comprises a CPU, a voltage detection module, a current detection module, a temperature detection module, an ampere-hour integral estimation module, an open-circuit voltage estimation module, a storage module and a display module; the voltage detection module, the current detection module and the temperature detection module are respectively connected with each lithium battery; the open-circuit voltage estimation module is respectively connected with the voltage detection module and the temperature detection module; the ampere-hour integral estimation module is respectively connected with the current detection module and the temperature detection module; the CPU is respectively connected with the voltage detection module, the current detection module, the temperature detection module, the ampere-hour integral estimation module, the open-circuit voltage estimation module, the storage module, the display module and the power management module; the power management module is respectively connected with the photovoltaic module, the grid-connected inverter, the dual-power automatic transfer switch, the battery pack balancing device and the electric energy meter; the battery pack balancing device, the photovoltaic module and the grid-connected inverter are respectively connected with the lithium battery pack; the electric energy meter is connected with a mains supply; the dual-power automatic transfer switch is respectively connected with the grid-connected inverter and the commercial power.
In particular, the socket is also included; the output end of the dual-power automatic transfer switch is connected with the socket.
Particularly, the power management module adopts a TMS470 series single chip microcomputer chip.
In particular, the model of the dual-power automatic transfer switch is WATSGB-160/4P.
In particular, the voltage detection module comprises a voltage sensor and a voltage A/D converter; the input end of the voltage sensor is connected with the lithium battery; the output end of the voltage sensor is connected with the input end of the voltage A/D converter; the output end of the voltage A/D converter is connected with the open-circuit voltage estimation module; and the control end of the voltage A/D converter is connected with the CPU.
In particular, the current detection module comprises a current sensor and a current A/D converter; the input end of the current sensor is connected with the lithium battery; the output end of the current sensor is connected with the input end of the current A/D converter; the output end of the current A/D converter is connected with an ampere-hour integral estimation module; and the control end of the current A/D converter is connected with the CPU.
In particular, the temperature detection module comprises a temperature sensor and a temperature A/D converter; the input end of the temperature sensor is connected with the lithium battery; the output end of the temperature sensor is connected with the input end of the temperature A/D converter; the output end of the temperature A/D converter is respectively connected with the open-circuit voltage estimation module and the ampere-hour integral estimation module; and the control end of the temperature A/D converter is connected with the CPU.
Particularly, the display module is a touch display screen.
The utility model has the advantages that:
the utility model discloses utilize ampere hour integral estimation module and open circuit voltage estimation module to come through ampere hour-open circuit voltage estimation battery SOC, can acquire the comparatively accurate battery surplus of battery, CPU can show the calculated result through the display module to through these data of memory storage, make things convenient for managers to manage. The consistency of the lithium battery pack is controlled through the battery pack balancing device, and the capacity loss of the lithium battery pack caused by monomer difference is reduced. The utility model discloses an electric energy meter measures the commercial power electric quantity, and power management module can control dual supply automatic transfer switch to use the lithium cell power supply through the grid-connected inverter when commercial power cuts off the power supply, accomplishes incessant power supply; the power management module receives SOC data of the CPU, can manage each battery, controls the photovoltaic module battery to carry out accurate photovoltaic charging or discharging, and prevents overcharge and overdischarge.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic circuit diagram according to an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.
As shown in fig. 1, the energy storage system for the lithium battery of the photovoltaic UPS of the present embodiment includes a lithium battery pack including a plurality of lithium batteries, and the lithium battery pack is a lithium iron phosphate battery pack.
The system further comprises a photovoltaic module, a grid-connected inverter, a dual-power automatic transfer switch, an electric energy meter, a lithium battery management system, a battery pack balancing device and a power management module. The lithium battery management system comprises a CPU, a voltage detection module, a current detection module, a temperature detection module, an ampere-hour integral estimation module, an open-circuit voltage estimation module, a storage module and a display module. The voltage detection module, the current detection module and the temperature detection module are respectively connected with each lithium battery. The open-circuit voltage estimation module is respectively connected with the voltage detection module and the temperature detection module. The ampere-hour integral estimation module is respectively connected with the current detection module and the temperature detection module. The CPU is respectively connected with the voltage detection module, the current detection module, the temperature detection module, the ampere-hour integral estimation module, the open-circuit voltage estimation module, the storage module, the display module and the power management module; the power management module is respectively connected with the photovoltaic module, the grid-connected inverter, the dual-power automatic transfer switch, the battery pack balancing device and the electric energy meter. The battery pack balancing device, the photovoltaic module and the grid-connected inverter are respectively connected with the lithium battery pack. The electric energy meter is connected with the mains supply. The dual-power automatic transfer switch is respectively connected with the grid-connected inverter and the commercial power. The output end of the double-power automatic transfer switch is connected with the socket. The power management module adopts a TMS470 series single chip microcomputer chip. The model of the dual-power automatic transfer switch is WATSGB-160/4P. The voltage detection module includes a voltage sensor and a voltage A/D converter. The input end of the voltage sensor is connected with the lithium battery. The output end of the voltage sensor is connected with the input end of the voltage A/D converter. The output end of the voltage A/D converter is connected with the open-circuit voltage estimation module. The control end of the voltage A/D converter is connected with the CPU. The current detection module includes a current sensor and a current A/D converter. The input end of the current sensor is connected with the lithium battery. The output end of the current sensor is connected with the input end of the current A/D converter. The output end of the current A/D converter is connected with the ampere-hour integral estimation module. The control end of the current A/D converter is connected with the CPU. The temperature detection module comprises a temperature sensor and a temperature A/D converter. The input end of the temperature sensor is connected with the lithium battery. The output end of the temperature sensor is connected with the input end of the temperature A/D converter. The output end of the temperature A/D converter is respectively connected with the open-circuit voltage estimation module and the ampere-hour integral estimation module. The control end of the temperature A/D converter is connected with the CPU. The display module is a touch display screen.
The working principle and the using method of the embodiment of the utility model are as follows:
the electric energy meter and the dual-power automatic transfer switch are connected with a mains supply power grid, the current sensor, the voltage sensor and the temperature sensor are connected with the lithium battery pack, and the photovoltaic module is connected with the lithium battery pack through a photovoltaic module; finally, the photovoltaic module is placed in a position capable of receiving solar energy. When the plug is operated, the power management module controls to use commercial power or use a lithium battery to supply power for important equipment on the plug as required, controls the photovoltaic module to charge, and can check data such as temperature, current, voltage and SOC of the lithium battery through the display screen.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, various changes and modifications can be made by the owner within the scope of the appended claims, and the protection scope of the present invention should not be exceeded by the claims.

Claims (9)

1. The utility model provides a photovoltaic UPS lithium cell energy storage system, includes the lithium cell group of a plurality of lithium cell, its characterized in that: the system also comprises a photovoltaic module, a grid-connected inverter, a dual-power automatic transfer switch, an electric energy meter, a lithium battery management system, a battery pack balancing device and a power management module; the lithium battery management system comprises a CPU, a voltage detection module, a current detection module, a temperature detection module, an ampere-hour integral estimation module, an open-circuit voltage estimation module, a storage module and a display module; the voltage detection module, the current detection module and the temperature detection module are respectively connected with each lithium battery; the open-circuit voltage estimation module is respectively connected with the voltage detection module and the temperature detection module; the ampere-hour integral estimation module is respectively connected with the current detection module and the temperature detection module; the CPU is respectively connected with the voltage detection module, the current detection module, the temperature detection module, the ampere-hour integral estimation module, the open-circuit voltage estimation module, the storage module, the display module and the power management module; the power management module is respectively connected with the photovoltaic module, the grid-connected inverter, the dual-power automatic transfer switch, the battery pack balancing device and the electric energy meter; the battery pack balancing device, the photovoltaic module and the grid-connected inverter are respectively connected with the lithium battery pack; the electric energy meter is connected with a mains supply; the dual-power automatic transfer switch is respectively connected with the grid-connected inverter and the commercial power.
2. The energy storage system of a photovoltaic UPS lithium battery of claim 1, wherein: the lithium battery pack is a lithium iron phosphate battery pack.
3. The energy storage system of a photovoltaic UPS lithium battery of claim 1, wherein: also includes a socket; the output end of the dual-power automatic transfer switch is connected with the socket.
4. The energy storage system of a photovoltaic UPS lithium battery of claim 1, wherein: the power management module adopts a TMS470 series single chip microcomputer chip.
5. The energy storage system of a photovoltaic UPS lithium battery of claim 1, wherein: the model of the dual-power automatic transfer switch is WATSGB-160/4P.
6. The energy storage system of a photovoltaic UPS lithium battery of claim 1, wherein: the voltage detection module comprises a voltage sensor and a voltage A/D converter; the input end of the voltage sensor is connected with the lithium battery; the output end of the voltage sensor is connected with the input end of the voltage A/D converter; the output end of the voltage A/D converter is connected with the open-circuit voltage estimation module; and the control end of the voltage A/D converter is connected with the CPU.
7. The energy storage system of a photovoltaic UPS lithium battery of claim 1, wherein: the current detection module comprises a current sensor and a current A/D converter; the input end of the current sensor is connected with the lithium battery; the output end of the current sensor is connected with the input end of the current A/D converter; the output end of the current A/D converter is connected with an ampere-hour integral estimation module; and the control end of the current A/D converter is connected with the CPU.
8. The energy storage system of a photovoltaic UPS lithium battery of claim 1, wherein: the temperature detection module comprises a temperature sensor and a temperature A/D converter; the input end of the temperature sensor is connected with the lithium battery; the output end of the temperature sensor is connected with the input end of the temperature A/D converter; the output end of the temperature A/D converter is respectively connected with the open-circuit voltage estimation module and the ampere-hour integral estimation module; and the control end of the temperature A/D converter is connected with the CPU.
9. The energy storage system of a photovoltaic UPS lithium battery of claim 1, wherein: the display module is a touch display screen.
CN202022340201.XU 2020-10-20 2020-10-20 Photovoltaic UPS lithium battery energy storage system Active CN214154120U (en)

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CN202022340201.XU CN214154120U (en) 2020-10-20 2020-10-20 Photovoltaic UPS lithium battery energy storage system

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Application Number Priority Date Filing Date Title
CN202022340201.XU CN214154120U (en) 2020-10-20 2020-10-20 Photovoltaic UPS lithium battery energy storage system

Publications (1)

Publication Number Publication Date
CN214154120U true CN214154120U (en) 2021-09-07

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