AU2015203095A1 - A control system for energy storage - Google Patents

A control system for energy storage Download PDF

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Publication number
AU2015203095A1
AU2015203095A1 AU2015203095A AU2015203095A AU2015203095A1 AU 2015203095 A1 AU2015203095 A1 AU 2015203095A1 AU 2015203095 A AU2015203095 A AU 2015203095A AU 2015203095 A AU2015203095 A AU 2015203095A AU 2015203095 A1 AU2015203095 A1 AU 2015203095A1
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AU
Australia
Prior art keywords
module
lithium battery
output terminal
electric supply
battery pack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
AU2015203095A
Inventor
Xiangqian Sun
Xin Zhao
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CHEN MARCO
Original Assignee
CHEN MARCO
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CHEN MARCO filed Critical CHEN MARCO
Publication of AU2015203095A1 publication Critical patent/AU2015203095A1/en
Assigned to CHEN, MARCO reassignment CHEN, MARCO Request for Assignment Assignors: CHEN, WEIWEI
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • 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
    • Y02E10/70—Wind energy
    • Y02E10/76—Power conversion electric or electronic aspects

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The control system for energy storage in present application comprises a charger AC/DC module connected to an electric supply output terminal, a solar power charging system and a lithium battery pack. Output terminals of the charger AC/DC module and the solar power charging system are connected to an input terminal of the lithium battery pack. An output terminal of the lithium battery pack is connected to a UPS module. An input terminal of the UPS module is connected to the electric supply output terminal via an isolating switch. The present application can store the electric power obtained by the wind or solar power generation device in the lithium battery for saving the power consumption from the electrical network, and also can store the electric power of low price obtained from the electrical network during the lower phase of the electric supply in the lithium battery, then during the higher phase of the electric supply, the connection between the user and the electrical network is cut off and the lithium battery is used as the power source, such that the cost is greatly reduced. Fig.1

Description

A CONTROL SYSTEM FOR ENERGY STORAGE FIELD OF THE INVENTION The present application relates to a technical field of supplying power from stored energy, and more particularly relates to a control system for energy storage used to supply stored energy obtained from solar energy and electrical power during the lower phase of the electric supply. BACKGROUND OF THE INVENTION Wind power generation and solar power generation both have inherent intermittent problems which have troubled the development of the new energy. This problem becomes more urgent as the scale of the new energy generation continues to extend. It is the focus for solving the inherent intermittent problems of the new energy that the surplus energy can be stored during the lower phase of the electric supply and then released during the higher phase of the electric supply. In additional, the load in the electrical network has a peak and valley difference, so the electricity price during the lower phase of the electric supply has a preferential discount. Accordingly, an energy storage inverter system can be used to store the electricity having a lower price and then use the same during the higher phase of the electric supply, so as to save money. Moreover, the surplus energy also can be sold to the electrical network. TECHNICAL PROBLEM For a long time, nobody thinks out that the electrical power which can not be run down temporarily can be stored and then released when a power supplying is demanded, or the electrical power during the lower phase of the electric supply can be stored and then released during the higher phase of the electric supply. 1 Moreover, there is no such device in the prior art. TECHNICAL SOLUTION FOR SOLVING THE TECHNICAL PROBLEM The present application relates to a control system for energy storage used to store the surplus energy and then release the same during the higher phase of the electric supply, aiming at solving the mentioned technical problem. According to an aspect, the control system for energy storage in present application comprises a charger AC/DC module connected to an electric supply output terminal, a solar power charging system and a lithium battery pack. An output terminal of the charger AC/DC module and an output terminal of the solar power charging system both are connected to an input terminal of the lithium battery pack. An output terminal of the lithium battery pack is connected to a UPS module. An input terminal of the UPS module is connected to the electric supply output terminal via an isolating switch. The control system for energy storage in present application further comprises a MCU control module whose input terminal connected to the electric supply output terminal through an electric supply input sampling module, to the output terminal of the lithium battery pack through a battery parameters sampling module, and to an output terminal of the UPS module through an output sampling module, and whose output terminal connected to a charger control switch, to an input terminal of the isolating switch, and to the input terminal of the UPS module via a UPS control module, wherein, the charger AC/DC module is connected to the electric supply output terminal through the charger control switch. The MCU control module is further connected to a LCD display screen, wherein input terminals of the LCD display screen and the MCU control module are connected to a power supply module. The input terminal of the lithium battery pack is further connected to a wind power charging system. 2 BENEFICIAL EFFECT The control system for energy storage according to present application can store the electric power obtained by the wind or solar power generation device in the lithium battery for saving the power consumption from the electrical network, and also can store the electric power of low price obtained from the electrical network during the lower phase of the electric supply in the lithium battery. Then during the higher phase of the electric supply, the connection between the user and the electrical network is cut off and the lithium battery is used as the power source, such that the cost is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows a block diagram of present application, in which: 1-ouput terminal of an electric supply, 2-charger AC/DC module, 3-solar power charging system, 4-lithium battery pack, 5-UPS module, 6-isolating switch, 7-MCU control module, 8-electric supply input sampling module, 9-battery parameters sampling module, 10- output sampling module, 11-charger control switch, 12-UPS control module, 13- LCD display screen, 14-power supply module, 15-wind power charging system. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The present application will be more fully understand from the following description and drawings. The control system for energy storage as shown in Fig. 1 comprises a charger AC/DC module 2 connected to an electric supply output terminal 1, a solar power charging system 3, a lithium battery pack 4 comprising a polymer lithium ion battery, and a MCU control module 7. The output terminals of the charger AC/DC 3 module 2 and the solar power charging system 3 both are connected to the input terminal of the lithium battery pack 4 whose output terminal is connected to a UPS module 5. The input terminal of the UPS module 5 is connected to the electric supply output terminal 1 through an isolating switch 6. The input terminal of the lithium battery pack 4 is further connected to a wind power charging system 15. The input terminal of the MCU control module 7 is connected to the electric supply output terminal 1 through an electric supply input sampling module 8, to the output terminal of the lithium battery pack 4 through a battery parameters sampling module 9, and to an output terminal of the UPS module 5 through an output sampling module 10. The output terminal of the MCU control module 7 is connected to a charger control switch 11, to an input terminal of the isolating switch 6, and to the input terminal of the UPS module 5 via a UPS control module 12. The charger AC/DC module 2 is connected to the electric supply output terminal 1 through the charger control switch 11. The MCU control module 7 is further connected to a LCD display screen 13. The input terminals of the LCD display screen 13 and the MCU control module 7 are connected to a power supply module 14. The LCD display screen 13 and the MCU control module 7 communicate with each other via a RS 485 bus, so that the LCD display screen 13 can be operated remotely for parameter setting and manual operation. The LCD display screen 13 can display a voltage, current, frequency, and battery remaining capacity and so on. The present application has following operation principle and working process. 1. Power supplying of the control system for energy storage The power supply module 14 supplies the electric power to the MCU control module 7, the LCD display screen 13, the electric supply input sampling module 8, the battery parameters sampling module 9 and the output sampling module 10 for maintaining normal operation of the control system. The power supply module 14 4 has two power supplying modes. In mode a, the lithium battery pack 4 provides a DC voltage of 24 V to the LCD display screen 12, and a DC voltage of +/- 15V to the electric supply input sampling module 8, the battery parameters sampling module 9 and the output sampling module 10, and a DC voltage of +/- 5V to the basic power source of the MCU control module 7 via a DC/DC mode. In mode b when the lithium battery pack 4 has lower or no power, the electric supply from the electric network is converted into a DC voltage of 48V by the power supply module 14 and then converted into a demanded DC voltage via a DC/DC mode. By providing the above power supplying modes, the system works normally when each one of the battery and the electric supply fails. 2) The energy storage process during the lower phase of the electric supply 23:00-7:00 belongs to the lower phase of the electric supply, in which the power consumption of industry and citizen is low. The MCU control module 7 turns on the charger control switch 11. The output terminal of the electric supply 1 outputs the AC current for charging the lithium battery pack 4 via the charger AC/DC module 2. Meanwhile, the MCU control module 7 turns on the isolating switch 6, so that the electric supply is outputted via a Bypass mode in which no electric supply is converted into a DC voltage via the AC/DC mode and further converted into a AC voltage via the DC/AC inverting mode in the UPS module 5. Accordingly, in the bypass mode, the power consumption efficiency is about 99%, and the inverting efficiency is about 85%. In such a way, the loss in the inverting process is reduced. 3) The energy storage process during the higher phase of the electric supply The MCU control module 7 turns off the charger control switch 11 and the isolating switch 6, then the electric power stored in the lithium battery pack 4 is provided to the electric devices in a DC/DC mode via the UPS module 5. 5 During the process of storing the electric power from the electric supply into the lithium battery pack 4 via an AC/DC conversion, and then converting the DC voltage in the lithium battery pack 4 to an AC current via a DC/AC conversion, the conversion efficiency is 55%. As in many countries, such as Japan, the electricity price during the lower phase of the electric supply is just a third of that during the higher phase of the electric supply, so the cost would be reduced about 20-30%. 4) Solar energy storing mode In the daytime, the solar power charging system supplies electrical power to the electric devices via a DC/DC conversion by the MCU control module 7 and then an inverting process by the UPS module 5. As the solar power charging system is not stable, the MCU control module 7 would control its power supply according to the power of the solar panels. When the electrical power is sufficient, it would be supplied to the UPS module 5 for the inverting process, and if not, the MCU control module 7 would control the solar power charging system to charge the batteries only. Meanwhile, the electric supply would be used to supply electrical power to the electric devices. When the voltage of the lithium battery pack 4 reaches the demanded inverting voltage, the UPS module 5 would be cut off from the electric supply and the lithium battery pack 4 would be used to supply the electric power. In such a way, the power consumption of the electric supply can be reduced. The switch voltage of the lithium battery pack 4 can be arranged by the user via the operation screen on the LCD display screen 13. 5) Energy storing during the lower phase of the electric supply mode and solar energy storing mode The present application can support both energy storing during the lower phase of the electric supply mode and solar energy storing mode, so that the power consumption from the electric network can be saved a lot, so that the present application is especially suitable for the areas and countries where the electricity price is high or is lack of non-renewable resources. 6 The parts of the present application which are not described in detail belong to the prior art. 7

Claims (3)

1. A control system for energy storage comprising a charger AC/DC module (2) connected to an electric supply output terminal (1), a solar power charging system (3) and a lithium battery pack (4), wherein an output terminal of the charger AC/DC module (2) and an output terminal of the solar power charging system (3) are connected to an input terminal of the lithium battery pack (4), an output terminal of the lithium battery pack (4) is connected to a UPS module (5) whose input terminal is connected to the electric supply output terminal (1) via an isolating switch (6), wherein the control system for energy storage further comprises a MCU control module (7) whose input terminal connected to the electric supply output terminal (1) through an electric supply input sampling module (8), to the output terminal of the lithium battery pack (4) through a battery parameters sampling module (9), and to an output terminal of the UPS module (5) through an output sampling module (10), and whose output terminal connected to a charger control switch (11), to an input terminal of the isolating switch (6), and to the input terminal of the UPS module (5) via a UPS control module (12), wherein, the charger AC/DC module (2) is connected to the electric supply output terminal (1) through the charger control switch (11).
2. The control system for energy storage according to claim 1, wherein the MCU control module (7) is further connected to a LCD display screen (19), wherein input terminals of the LCD display screen (13) and the MCU control module (7) are connected to a power supply module (14).
3. The control system for energy storage according to claim 1 or 2, wherein the input terminal of the lithium battery pack (4) is further connected to a wind power charging system (15). 8
AU2015203095A 2014-01-20 2015-01-19 A control system for energy storage Pending AU2015203095A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201420033787 2014-01-20
CN2014200337877 2014-01-20
PCT/CN2015/071026 WO2015106721A1 (en) 2014-01-20 2015-01-19 Energy storage control system

Publications (1)

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AU2015203095A1 true AU2015203095A1 (en) 2015-08-06

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AU2015101163A Expired AU2015101163A4 (en) 2014-01-20 2015-01-19 A control system for energy storage

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Application Number Title Priority Date Filing Date
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JP (1) JP3210532U (en)
CN (1) CN203859588U (en)
AU (2) AU2015203095A1 (en)
DE (1) DE202015105041U1 (en)
WO (1) WO2015106721A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203859588U (en) * 2014-01-20 2014-10-01 武汉中聚能源科技有限公司 Energy storage control system
CN106357006A (en) * 2016-08-31 2017-01-25 安徽远东船舶有限公司 High-power DC (direct current) power storage station
US12040656B2 (en) 2019-12-09 2024-07-16 Westgen Technologies Inc. Engineered power on demand
WO2021113953A1 (en) * 2019-12-09 2021-06-17 Westgen Technologies Inc. Engineered power on demand
CN113682186A (en) * 2021-07-20 2021-11-23 青岛能蜂电气有限公司 Electric vehicle charging system, method, electronic device and computer readable medium
CN114423127A (en) * 2022-01-19 2022-04-29 厦门普为光电科技有限公司 Lighting device with off-peak electricity utilization management mechanism and method thereof

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JP5644020B2 (en) * 2010-01-21 2014-12-24 エリーパワー株式会社 Power storage system, power storage method and program
CN102882237B (en) * 2011-07-15 2014-12-10 珠海银隆新能源有限公司 Intelligent energy storage machine and operating method thereof
CN102290841A (en) * 2011-08-13 2011-12-21 罗俊亚 Peak clipping and valley filling electric vehicle swapping station for distribution network
CN203859588U (en) * 2014-01-20 2014-10-01 武汉中聚能源科技有限公司 Energy storage control system

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JP3210532U (en) 2017-06-01
WO2015106721A1 (en) 2015-07-23
AU2015101163A4 (en) 2015-10-01
CN203859588U (en) 2014-10-01
DE202015105041U1 (en) 2015-10-29

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PC1 Assignment before grant (sect. 113)

Owner name: CHEN, MARCO

Free format text: FORMER APPLICANT(S): CHEN, WEIWEI

DA3 Amendments made section 104

Free format text: THE NATURE OF THE AMENDMENT IS: APPLICATION IS TO PROCEED UNDER THE NUMBER 2015101163