WO2012160964A1 - Procédé de charge de batterie au moyen d'une sortie d'énergie naturelle - Google Patents

Procédé de charge de batterie au moyen d'une sortie d'énergie naturelle Download PDF

Info

Publication number
WO2012160964A1
WO2012160964A1 PCT/JP2012/061814 JP2012061814W WO2012160964A1 WO 2012160964 A1 WO2012160964 A1 WO 2012160964A1 JP 2012061814 W JP2012061814 W JP 2012061814W WO 2012160964 A1 WO2012160964 A1 WO 2012160964A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
voltage
charging
current
charged
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.)
Ceased
Application number
PCT/JP2012/061814
Other languages
English (en)
Japanese (ja)
Inventor
山口　昌男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Publication of WO2012160964A1 publication Critical patent/WO2012160964A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/28—Arrangements for balancing of the load in networks by storage of energy
    • H02J3/32—Arrangements for balancing of the load in networks by storage of energy using batteries or super capacitors with converting means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/90—Regulation of charging or discharging current or voltage
    • H02J7/933—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/46—Accumulators structurally combined with charging apparatus
    • 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
    • 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
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin

Definitions

  • the present invention relates to a method of charging a battery with natural energy such as a solar cell or wind power generation, and more particularly to a charging method capable of charging the battery to a state close to full charge.
  • a battery charging method using solar cells that generate electricity using natural energy has been developed.
  • This charging method needs to detect the full charge of the battery and stop the charging. This is to prevent deterioration due to overcharging of the battery and to ensure safety.
  • the full charge of the battery can be determined by detecting that the battery voltage rises to the full charge voltage.
  • a lithium ion battery can be fully charged by charging at a constant voltage / constant current. This battery is charged at constant current until the voltage rises to the maximum voltage of 4.2V / cell to 4.3V / cell, and after the battery voltage rises to this voltage, it is charged at constant voltage and fully charged. When the charging current becomes smaller than the set value in the constant voltage charging state, it can be determined that the battery is fully charged.
  • the method of charging a lithium-ion battery with a commercial power source can be fully charged by constant voltage / constant current charging as described above because the output of the commercial power source is stable.
  • a natural energy generator such as a solar cell
  • the output of the solar cell that generates power with natural energy varies depending on the weather. unable to charge.
  • the method of charging using natural energy determines that the battery is fully charged and stops charging when the voltage of the battery rises to the maximum voltage.
  • the charging method for determining whether the battery is fully charged by this method cannot be charged until the battery is fully charged, in other words, the remaining capacity is 100%.
  • the remaining capacity becomes smaller than 100% when the battery is determined to be fully charged and charging is stopped. For example, in a state where the charging current of the battery is charged at a charging current of 0.5 C, charging can be stopped until the remaining capacity reaches 90% by stopping charging at the maximum voltage, but charging is performed at 2C to 3C. In this case, when the charging is stopped at the maximum voltage, the remaining capacity is considerably reduced to about 60%.
  • Patent Document 1 discloses a method of charging by gradually reducing the current for charging a battery with the output of a solar cell that generates power with natural energy.
  • a solar cell system for charging a battery with a solar cell is also disclosed in Patent Document 2.
  • Patent Document 1 gradually decreases the charging current of the battery after the voltage of the battery to be charged rises to the maximum voltage.
  • This charging method can charge the remaining capacity larger than the method of stopping charging in a state where the voltage of the battery rises to the maximum voltage.
  • this method reduces the charging current so that the battery voltage does not increase after the battery voltage is charged to the maximum voltage, so the charging current after the battery voltage first increases to the maximum voltage is considerably reduced. There is a need to. For this reason, there is a drawback that it takes time to charge to increase the remaining capacity after rising to the maximum voltage.
  • An important object of the present invention is to provide a method for charging a battery with an output of natural energy that can charge the battery more quickly and with a larger remaining capacity with the output of a natural energy generator such as a solar cell. is there.
  • the battery charging method by the output of the natural energy according to the present invention charges the battery 3 with the output of the natural energy power generation device 1 by limiting the rechargeable battery 3 to a constant current limit, and the voltage of the battery 3 to be charged is full. It detects that the charging voltage rises, determines that it is fully charged, and stops charging. Furthermore, the battery charging method is performed by reducing the limit current value for charging the battery 3 as the voltage of the battery 3 to be charged increases.
  • the above charging method is characterized in that the battery can be charged more quickly with a natural energy output such as a solar cell to a state that is closer to full charge, that is, a state in which the remaining capacity is increased. This is because the above charging method restricts the charging current to be smaller as the voltage of the battery to be charged becomes higher.
  • the natural energy power generation device 1 can be either a solar cell 2 or a wind power generator.
  • the battery 3 to be charged can be a lithium ion battery.
  • the above charging method can prevent the lithium ion battery from deteriorating and can be charged safely and quickly to a state close to full charge.
  • the battery charging method by the output of natural energy stores the current reduction voltage for reducing the limit current of the battery 3 and the limit current value for the current reduction voltage in the memory 7 and is charged with the natural energy. Can be charged by limiting the current for charging the battery 3 to the limit current value.
  • the above charging method has a feature that it can be charged quickly to a state close to full charge by a simple method because charging is performed by limiting the charging current in a stepwise manner every time the voltage of the battery to be charged rises.
  • the battery charging method by the output of natural energy according to the present invention stores a plurality of current reduction voltages and a limit current value with respect to the current reduction voltage, and the voltage of the battery 3 charged by the natural energy power generation device 1 becomes the current reduction voltage. Each time it rises, the limit current value for charging the battery 3 can be reduced.
  • the above charging method limits the current to be charged stepwise every time the voltage of the battery charged with natural energy rises, thus preventing the battery from deteriorating and even more quickly to a state near full charge safely. There is a feature that can be charged.
  • FIG. 1 shows a system for charging a battery by a method according to an embodiment of the present invention.
  • This system uses a natural energy power generation device 1 as a solar cell 2 and charges the battery 3 with the solar cell 2.
  • the charging method of the present invention does not specify a natural energy power generation device as a solar cell, and can be, for example, a wind power generator, a tidal power generator, or the like, and can be any power generation device that generates power with natural energy.
  • FIG. 1 is a system for charging a battery 3 with a solar cell 2, and this solar cell system includes a solar cell 2, a battery 3 charged with electric power output from the solar cell 2, a solar cell 2 and a battery 3. And a stabilizing circuit 4 that supplies the output of the solar cell 2 to the battery 3 and a control circuit 5 that controls the stabilizing circuit 4.
  • the rated output of the solar cell 2 that is the natural energy power generation apparatus 1 is set to a magnitude that sets the charging current of the battery 3 to 0.5C or more, preferably 1C to 3C.
  • the solar cell 2 can fully charge the battery 3 quickly by increasing the rated output.
  • the solar cell 2 that charges the battery 3 with a charging current of 1C to 3C charges the battery 3 with a capacity of 10 (Ah) with a current of 10A to 30A.
  • the large-capacity battery 3 has a plurality of unit cells 6 connected in series to increase the output voltage, and a plurality of unit cells 6 connected in parallel to increase the charging current.
  • the solar cell 2 that charges the battery 3 has an output in which the charging current of each unit cell 6 is in the above-described range.
  • the battery 3 is a lithium ion battery.
  • the lithium ion battery is characterized in that the charging efficiency when the output of the solar battery 2 is low can be increased, and the capacity with respect to the size and weight can be increased.
  • any battery 3 that can be charged by a natural energy generator such as a solar battery, such as a nickel metal hydride battery or a nickel cadmium battery, can be used as the battery.
  • the stabilization circuit 4 is a DC / DC converter having a constant voltage / constant current characteristic that outputs the output of the solar cell 2 in a constant voltage / constant current characteristic.
  • the stabilization circuit 4 composed of a DC / DC converter having constant voltage / constant current characteristics limits the direct current voltage and current input from the solar cell 2 to a constant value and outputs them to the battery 3.
  • the constant voltage / constant current circuit stabilization circuit 4 charges the lithium ion battery with a preferred current and voltage.
  • the present invention does not specify a stabilization circuit as a constant voltage / constant current circuit. This is because the battery voltage is detected and charged while limiting the charging current of the battery, so that the battery can be charged using the stabilization circuit as a constant current circuit.
  • the output of the solar cell 2 that is the natural energy power generation device 1 varies depending on the intensity of the incident sunlight.
  • the stabilizing circuit 4 charges the battery 3 while limiting the current and voltage for charging the battery 3 to a certain value or less, or restricting the current to a certain value or less.
  • the solar cell 2 is charged while limiting the current of the battery 3 to 10A. Therefore, in a state where the intensity of the solar light incident on the solar cell 2 is larger than the set value, the solar cell 2 charges the battery 3 with a current of 10A.
  • the stabilization circuit 4 charges the battery 3 while limiting the current and voltage for charging the battery 3, but the current and voltage for charging the battery 3 vary depending on the output of the solar cell 2.
  • the solar cell system that charges the battery 3 by controlling the output of the solar cell 2 with the stabilization circuit 4 charges the battery 3 with a varying current and voltage.
  • the voltage of the battery 3 charged in this state increases as it approaches full charge.
  • the battery 3 is remarkably deteriorated and the safety is also lowered.
  • lithium ion batteries are particularly harmful when charged at a voltage higher than the maximum voltage.
  • the control circuit 5 detects the voltage of the battery 3 and controls the stabilization circuit 4 of the DC / DC converter in order to reduce the deterioration of the battery 3 and charge it quickly and safely.
  • the control circuit 5 controls the stabilization circuit 4 of the DC / DC converter so that the limiting current for charging the battery 3 is reduced and charged as the voltage of the battery 3 to be charged increases.
  • FIG. 2 shows the current and voltage at which the control circuit 5 controls the stabilization circuit 4 to charge the battery 3. As shown in this figure, the control circuit 5 controls the stabilization circuit 4 so as to reduce the limiting current for charging the battery 3 as the voltage of the battery 3 increases.
  • FIG. 2 illustrates current and voltage characteristics when the battery 3 is a lithium ion battery.
  • the first limit current value is 3C and the second current decrease voltage is 4C until the voltage of the charged lithium ion battery rises to 4.0V which is the first current decrease voltage.
  • the second limited current value is set to 2C until the voltage increases to 1V, and further, the limited current value is set to 0.1C until the voltage reaches 4.2V which is the full charge voltage.
  • the battery is charged to a state almost full.
  • the control circuit 5 stores in the memory 7 a current decrease voltage that decreases the limit current of the battery 3 and a limit current value corresponding to the current decrease voltage, and the voltage of the battery 3 charged by the solar cell 2 is the current decrease voltage.
  • the stabilization circuit 4 is controlled to limit the current for charging the battery 3 to the limit current value.
  • the control circuit 5 that controls the stabilization circuit 4 includes a plurality of current reduction voltages, that is, 4.0V, 4.1V, and 4.2V, and a limiting current value for the current reduction voltage, that is, 3C. 2C and 0.1C are stored.
  • the current decrease voltage for decreasing the limit current of the battery indicates a voltage value for one series of batteries.
  • FIG. 2 stores three current reduction voltages and a limit current value for each current decrease voltage, but four or more current decrease voltages and a limit current value for the current decrease voltage Can be stored and the stabilization circuit 4 can be controlled.
  • the control circuit 5 controls the stabilization circuit 4 to reduce the charging current of the battery 3 to a small value, and the limit current value for the current decreasing voltage is close to full charging of the battery 3 more quickly.
  • the voltage and current that can be charged to the state are set.
  • the solar cell system that charges the battery 3 with the characteristics shown in FIG. 2 charges the battery 3 as follows.
  • the following charging method shows a state in which one series battery is charged. Therefore, when charging a battery formed by connecting a plurality of batteries in n series, charging is controlled by comparing a current decrease voltage obtained by multiplying the following voltage value by n with the total voltage of the battery.
  • (1) A state in which the voltage of the battery 3 is lower than the lowest first current decrease voltage of 4.0 V. In this state, the control circuit 5 detects the voltage of the battery 3 and controls the stabilization circuit 4. Then, the battery 3 is charged by controlling the maximum value of the current for charging the battery 3 to be 3C which is the first limit current value.
  • the charged battery 3 outputs commercial power via a DC / AC inverter.
  • the solar cell system shown in the block diagram of FIG. 1 includes a DC / AC inverter 8 connected to a battery 3 charged with the solar cell 2.
  • the DC / AC inverter 8 converts the output of the battery 3 into an alternating current of a commercial power source and outputs it. Therefore, the DC / AC inverter 8 is connected to an outlet 9 that is connected to a commercial power source.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

L'invention concerne un procédé de charge rapide de batterie présentant un niveau de charge élevé au moyen d'une sortie de dispositif de production d'énergie naturelle, tel que des cellules solaires. Le procédé de charge de batterie au moyen d'une sortie d'énergie naturelle consiste à charger une batterie rechargeable (3) au moyen de la sortie d'un dispositif de production d'énergie naturelle (1) par réduction de la charge à une valeur de courant restreinte donnée et à arrêter la charge de la batterie (3) lorsqu'on a déterminé que la batterie (3) en charge a atteint sa charge totale par détection de la montée de la tension de la batterie (3) à une tension de charge totale. De plus, ce procédé permet de charger une batterie (3) par réduction de la valeur de courant restreinte à mesure que la tension de la batterie (3) en charge devient plus élevée.
PCT/JP2012/061814 2011-05-25 2012-05-09 Procédé de charge de batterie au moyen d'une sortie d'énergie naturelle Ceased WO2012160964A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-117419 2011-05-25
JP2011117419A JP2014150592A (ja) 2011-05-25 2011-05-25 自然エネルギーの出力によるバッテリの充電方法

Publications (1)

Publication Number Publication Date
WO2012160964A1 true WO2012160964A1 (fr) 2012-11-29

Family

ID=47217045

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/061814 Ceased WO2012160964A1 (fr) 2011-05-25 2012-05-09 Procédé de charge de batterie au moyen d'une sortie d'énergie naturelle

Country Status (2)

Country Link
JP (1) JP2014150592A (fr)
WO (1) WO2012160964A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022133975A1 (fr) * 2020-12-25 2022-06-30 宁德新能源科技有限公司 Procédé de charge, appareil électronique et support de stockage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2566677C1 (ru) * 2014-12-04 2015-10-27 Федеральное государственное бюджетное учреждение науки Институт проблем морских технологий Дальневосточного отделения Российской академии наук (ИПМТ ДВО РАН) Устройство для ограничения зарядного тока конденсатора нагрузки

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09121462A (ja) * 1995-10-24 1997-05-06 Matsushita Electric Ind Co Ltd 定電流・定電圧充電装置
JP2007221993A (ja) * 2006-02-16 2007-08-30 Summit Microelectronics Inc スイッチングレギュレータを用いた電池充電システムおよび電池充電方法
WO2009060996A1 (fr) * 2007-11-09 2009-05-14 Nec Toshiba Space Systems, Ltd. Système de commande d'alimentation électrique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09121462A (ja) * 1995-10-24 1997-05-06 Matsushita Electric Ind Co Ltd 定電流・定電圧充電装置
JP2007221993A (ja) * 2006-02-16 2007-08-30 Summit Microelectronics Inc スイッチングレギュレータを用いた電池充電システムおよび電池充電方法
WO2009060996A1 (fr) * 2007-11-09 2009-05-14 Nec Toshiba Space Systems, Ltd. Système de commande d'alimentation électrique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022133975A1 (fr) * 2020-12-25 2022-06-30 宁德新能源科技有限公司 Procédé de charge, appareil électronique et support de stockage

Also Published As

Publication number Publication date
JP2014150592A (ja) 2014-08-21

Similar Documents

Publication Publication Date Title
CN102882221B (zh) 一种光伏并网发电的超级电容器和蓄电池混合储能能量管理电路
US9865901B2 (en) Battery system and method for connecting a battery to the battery system
RU2565235C2 (ru) Регулирование вклада вторичных источников энергии в электрораспределительную сеть
JP5028517B2 (ja) 直流給電システム
JP5541982B2 (ja) 直流配電システム
CN104779645A (zh) 一种光伏发电系统及其控制方法
US10355320B2 (en) Power storage device for a battery group and connection control of capacitor and switching device
US20150263564A1 (en) Energy storage system and method for driving the same
CN110535178B (zh) 基于单粒子物理模型的光伏/锂电池混合系统能量控制策略
WO2015133136A1 (fr) Système de source d'alimentation
JP6495038B2 (ja) 充電器
KR20160070509A (ko) 슈퍼커패시터와 재충전배터리를 이용한 발광장치
CN103199312B (zh) 电池电流的管理方法及装置
JP6614010B2 (ja) 蓄電池システム
KR20150085227A (ko) 에너지 저장 시스템 및 그의 제어 방법
US9257870B2 (en) Battery energy storage, battery energy storage system, method, computer program and computer program product
WO2012160964A1 (fr) Procédé de charge de batterie au moyen d'une sortie d'énergie naturelle
JP4977805B1 (ja) 独立型電源装置
JP2011160635A (ja) 蓄電池の充電方法および太陽光発電システム
JPWO2018155442A1 (ja) 直流給電システム
JP2017077124A (ja) 蓄電装置
JP6361708B2 (ja) 太陽光発電システム
JP2016015803A (ja) 負荷平準化装置
CN108879925A (zh) 光伏发电离网系统
KR101523941B1 (ko) 에너지 저장 시스템

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12790233

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12790233

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP