WO2022145708A1 - 에너지 저장 시스템의 배터리 오토 밸런싱 장치 및 방법 - Google Patents
에너지 저장 시스템의 배터리 오토 밸런싱 장치 및 방법 Download PDFInfo
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- WO2022145708A1 WO2022145708A1 PCT/KR2021/016622 KR2021016622W WO2022145708A1 WO 2022145708 A1 WO2022145708 A1 WO 2022145708A1 KR 2021016622 W KR2021016622 W KR 2021016622W WO 2022145708 A1 WO2022145708 A1 WO 2022145708A1
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- battery
- voltage
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- charging
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000004146 energy storage Methods 0.000 title claims abstract description 17
- 238000007599 discharging Methods 0.000 claims abstract description 45
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 238000004891 communication Methods 0.000 claims description 2
- 238000010248 power generation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000001803 electron scattering Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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Classifications
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- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
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- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
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- 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
- 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
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
-
- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- 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
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
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- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
-
- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
-
- 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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- 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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
-
- 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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
-
- 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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
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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
- 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
Definitions
- the present invention relates to an apparatus and method for auto-balancing a battery in an energy storage system, and to a system and method capable of performing auto-balancing regardless of a state of charge of a battery.
- An energy storage system is applied to renewable energy generation where the amount of charge is not constant, and stores the generated surplus power, and plays a role of supplementing when the amount of power generation is insufficient compared to the amount of power in the load stage.
- ESSs usually contain lithium-ion batteries and play an important role in next-generation power systems.
- Korean Patent Registration No. 10-1563075 (Apparatus and method for balancing a battery rack of an energy storage system, registered on October 19, 2015) describes an apparatus and method for balancing a battery rack.
- the ESS master BMS connects the output of the specific battery rack to the first load bank to separate the specific battery rack with voltage imbalance from the high voltage warning to make it an independent battery state, and discharges it It is a configuration that makes
- the above registered patent does not consider the overall state of the battery racks, and separates and discharges a high voltage battery rack, and when the voltage difference with other battery racks is large, it takes a lot of time to discharge, A plurality of relays are used for separation and individual discharge, and there is a problem in that the cost increases due to the complexity of the control program for controlling the plurality of relays.
- the problem to be solved by the present invention in view of the above problems is to provide an apparatus and method for auto-balancing a battery of an energy storage system suitable for an ESS.
- a battery auto balancing device for an energy storage system for solving the above technical problem includes a relay for controlling a battery and a battery to be connected to a power line and a battery management unit for detecting and transmitting the state of the battery Detects the state of each of the plurality of battery units and the plurality of battery units, groups the batteries into a charging group and a discharging group, and performs charging using batteries belonging to the charging group according to the battery operation mode, and a power converter for discharging using batteries belonging to the discharging group.
- the power conversion unit communicates with the battery management unit provided in each of the plurality of battery units, groups the batteries into a charging group and a discharging group, and a processor for controlling the relay according to the mode may include
- the processor detects a maximum voltage battery having the highest voltage and a minimum voltage battery having the lowest voltage among the batteries, and has a voltage value within a safe voltage range based on the maximum voltage.
- a battery unit including a battery may be set as a discharging group, and a battery unit including a battery having a voltage value within a safe voltage range based on the minimum voltage may be set as a charging group.
- the battery auto balancing method of the energy storage system comprises: a) checking the battery voltage of each of the battery units in the processor of the power conversion unit, and detecting the battery having the maximum voltage and the battery having the minimum voltage Steps, b) comparing the battery states of all battery parts based on the maximum voltage and minimum voltage battery, and grouping them into a charging group and a discharging group; c) Checking the battery operation mode in the processor, if the charging mode and performing balancing by charging batteries belonging to the charging group and discharging batteries belonging to the discharging group in a discharging mode.
- step a voltages of all batteries may be sequentially detected, and the maximum and minimum voltage values that can be updated may be extracted according to the values.
- step b) compares the maximum voltage with the voltages of all batteries, and sets the battery unit including the batteries having a voltage value within the safe voltage range based on the maximum voltage among the batteries as a discharge group and a battery unit including a battery having a voltage value within a safe voltage range based on the minimum voltage may be set as a charging group.
- the present invention divides the battery into a charging group and a discharging group according to the voltage of the installed batteries, and balancing the voltage of the batteries by charging or discharging the charging group or discharging the charging group according to the operation mode, thereby simplifying the configuration of the system and balancing Time can be shortened and cost is reduced, which has an effect suitable for ESS.
- the present invention detects a battery with a maximum voltage and a battery with a minimum voltage among installed batteries, classifies batteries having a similar voltage based on the maximum voltage and minimum voltage battery and assigns them into groups, and then sets the maximum voltage By designating a group including a battery as a discharging group and a group including a minimum voltage battery as a charging group, balancing can be performed while charging or discharging according to the ESS operation.
- FIG. 1 is a block diagram of an auto-balancing device for a home energy storage system according to a preferred embodiment of the present invention.
- FIG. 2 is a flowchart of an auto-balancing method of the present invention.
- step S10 in FIG. 2 is a detailed flowchart of step S10 in FIG. 2 .
- step S20 in FIG. 2 is a detailed flowchart of step S20 in FIG. 2 .
- FIG. 1 is a block diagram of an auto-balancing device of an energy storage system according to a preferred embodiment of the present invention.
- the charging group performing charging in the charging mode and discharging the discharging group in the discharging mode
- Each battery unit 20 while communicating with the battery unit 20 while converting power between the power grid 50 and the PV module 30 and the battery unit 20 to which the unit 20 and the load 40 are connected ) by checking the voltage and SOC, and grouping the battery unit 20 into the charging group and the discharging group in the initial installation state and includes a power conversion unit 10 for performing control.
- the power conversion unit 10 converts the power (DC) produced by the PV module 30 into the charging voltage of the battery unit 20, or converts the DC voltage of the battery unit 20 into an AC voltage to load ( 40) or the power grid 50 to which the power plant is connected, or serves to convert the AC voltage of the power grid 50 into a charging voltage.
- the PV module 30 may include all power generation devices to which the ESS system such as wind power generation is applied.
- the power conversion unit 10 includes a DC/DC converter 12 and a DC/AC converter 13 . It also includes a processor 11 for control.
- Each of the battery units 20 detects and manages a battery 21 , a relay 22 for selectively connecting the battery 21 to the power conversion unit 10 , and the state of the battery 21 . It may include a battery management unit 23 for
- the battery management unit 23 communicates with the processor 11 of the power conversion unit 10 so that the battery state of each battery unit 20 can be checked from the power conversion unit 10 .
- the battery management units 23 may receive power from the power conversion unit 10 to operate regardless of the state of their own battery 21 .
- the power conversion unit 10 may perform a master role of battery management together.
- Each battery 21 of the battery unit 20 is connected in parallel to the DC/DC converter 12 of the power conversion unit 10 through a power line 60 separated from the power grid 50 .
- the processor 11 checks all the states of the batteries 21 of each battery unit 20 ( S10 ), and the states of the batteries 21 .
- the processor 11 of the power conversion unit 10 checks the state of the battery 21 of each battery unit 20 as in step S10.
- each battery unit 20 operates as a slave of the battery management system (BMS), and transmits the state of the battery 21 of each battery unit 20 through communication with the power conversion unit 10 .
- BMS battery management system
- the battery management unit 23 of the battery unit 20 transmits the state of the battery 21 to the processor 11 of the power conversion unit 10 , respectively.
- the processor 11 identifies a specific battery having the highest voltage and a battery having the lowest voltage among the batteries 21 of all battery units 20 , and designates the maximum voltage battery and the minimum voltage battery, respectively.
- batteries having a value within delta V and the voltage of the minimum voltage battery are found and grouped into a charging group.
- the delta V becomes the maximum allowable voltage difference when connected in parallel.
- step S10 is a detailed flowchart of the step S10.
- Step S10 is a process of finding a maximum voltage and a minimum voltage among voltages of several batteries.
- step S11 is an initialization step, and a set reference maximum voltage and reference minimum voltage are set.
- step S12 it is checked whether the voltage of the first battery unit 20 #1 is greater than the set reference maximum voltage.
- step S12 If it is determined in step S12 that the voltage of the first battery unit 20 #1 is greater than the reference maximum voltage, the voltage of the battery 21 of the first battery unit 20 #1 is set as the maximum voltage as in step S13.
- step S12 If it is determined in step S12 that the voltage of the first battery unit 20 #1 is not greater than the reference maximum voltage, it is checked whether the voltage of the first battery unit 20 #1 is less than the reference voltage as in step S14.
- step S14 If it is determined in step S14 that the voltage of the first battery unit 20 #1 is less than the reference minimum voltage, the voltage of the first battery unit 20 #1 is set as the minimum voltage in step S15.
- N is the processing process of the first battery unit (20 #1), and after checking in step S16 whether N is the same as the number of installed batteries, if not the same, increase N by 1 as in step S17, step S12 re-run
- the battery voltage of the second battery unit 20 #2 is detected and compared with the battery voltage of the first battery unit 20 #1.
- the battery voltage of the first battery unit 20 #1 is higher than the reference voltage, it is set to the maximum voltage, and if it is low, it is set to the minimum voltage, and the maximum voltage or the minimum voltage and the second battery unit 20 #2 ) and compare the voltages.
- step S12 If it is determined in step S12 that the battery voltage of the second battery unit 20 #2 is higher than the battery voltage of the first battery unit 20 #1, the battery voltage of the second battery unit 20 #2 is set to the maximum voltage. It is set in step S13. At this time, the battery voltage of the first battery unit 20 #1 is set to the minimum voltage.
- the battery voltage of the second battery unit 20 #2 is set to the minimum voltage in step S15. set At this time, the battery voltage of the first battery unit 20 #1 is set to the maximum voltage.
- the maximum voltage and the minimum voltage may be changed while repeating the process of FIG. 3 .
- step S10 a battery having a maximum voltage and a battery having a minimum voltage may be detected from among the N batteries 21 currently connected to the system.
- step S20 is a detailed flowchart of step S20.
- Step S20 is a step of grouping the N batteries 21 .
- step S21 it is checked whether the result of subtracting the voltage of the first battery unit 20 #1 from the maximum voltage detected in step S10 is less than delta V.
- delta V is the maximum allowable voltage difference, and when batteries having a voltage difference greater than delta V are connected in parallel, overcurrent may occur.
- delta V is used as a safe voltage difference range for safety.
- step S21 If the determination of step S21 is satisfied, as in step S22, the first battery unit 20 #1 is set as a discharge group.
- step S21 determines whether the result of subtracting the minimum voltage from the battery voltage of the first battery unit 20 #1 is less than the safe voltage difference range (delta V) After checking, if the conditions are satisfied, it is set as a charging group as in step S24.
- steps S23 and S25 are performed, respectively. This is because one battery can belong to both a discharging group and a charging group.
- step S25 it is checked whether the grouping of all batteries is completed. If not, step S21 is re-performed for the next battery by adding N in step S26.
- the batteries 11 of all the battery units 20 installed through this process are grouped.
- the batteries within the safe voltage range from the maximum voltage become the discharge group, and the batteries within the safe voltage range from the minimum voltage become the charge group.
- step S30 the current battery operation mode is checked.
- the operation mode of the battery is charging or discharging
- charging is an operation of charging power of the PV module 30 or the power grid 50 to the battery
- discharging refers to a state in which the voltage of the battery is used by the load 40 .
- step S40 the power conversion unit 10 selects the battery 21 of the battery unit 20 of the charging group among the grouped battery units 20.
- the relay 22 is controlled so that it can be charged.
- the relay 22 of the battery unit 20 belonging to the charging group is closed to allow charging, and the relay 22 of the battery units 20 belonging to the discharging group, not the charging group, is opened so as not to perform a charging operation. do.
- step S50 the power conversion unit 10 controls the relay 22 of the battery unit 20 belonging to the discharging group among the grouped battery units 20. is closed, and the relay of the battery unit belonging to the charging group is opened to discharge the battery 21 of the battery unit 20 belonging to the discharging group.
- step S60 it is checked whether the balancing of the voltages of the batteries 21 of the battery units 20 is completed in the current operation mode.
- Balancing completion confirmation may be completed when the voltage of the entire battery is within the safe voltage range.
- step S70 of operating the entire battery unit 20 in a single operation mode is performed.
- step S10 may be re-performed.
- the present invention can safely perform balancing when installing an ESS while using a simple configuration.
- the present invention is to provide a battery balancing device and method suitable for home ESS using the laws of nature, and has industrial applicability.
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
Description
Claims (6)
- 각각 배터리와 배터리를 전력선에 연결 제어하는 릴레이 및 상기 배터리의 상태를 검출하여 송신하는 배터리관리부를 구비하는 다수의 배터리부; 및다수의 상기 배터리부 각각의 배터리의 상태를 검출하고, 배터리들을 충전 그룹과 방전 그룹으로 그룹화하고, 배터리 동작 모드에 따라 충전 그룹에 속한 배터리들을 이용하여 충전을 수행하거나, 방전 그룹에 속한 배터리들을 이용하여 방전을 수행하는 전력변환부를 포함하는 에너지 저장 시스템의 배터리 오토 밸런싱 장치.
- 제1항에 있어서,상기 전력변환부는,다수의 상기 배터리부 각각에 마련된 배터리관리부와 통신을 수행하며,상기 배터리들을 충전 그룹과 방전 그룹으로 그룹화하고,모드에 따라 상기 릴레이를 제어하는 프로세서를 포함하는 에너지 저장 시스템의 배터리 오토 밸런싱 장치.
- 제2항에 있어서,상기 프로세서는,상기 배터리들 중 전압이 가장 높은 최대 전압의 배터리와, 전압이 가장 낮은 최소 전압 배터리를 검출하고,상기 최대 전압을 기준으로 안전전압범위 내의 전압값을 가지는 배터리를 포함하는 배터리부를 방전 그룹으로 설정하고,상기 최소 전압을 기준으로 안전전압범위 내의 전압값을 가지는 배터리를 포함하는 배터리부를 충전 그룹으로 설정하는 것을 특징으로 하는 에너지 저장 시스템의 배터리 오토 밸런싱 장치.
- a) 전력변환부의 프로세서에서 배터리부들 각각의 배터리 전압을 확인하여, 최대 전압을 가지는 배터리와 최소 전압을 가지는 배터리를 검출하는 단계;b) 상기 최대 전압과 최소 전압 배터리를 기준으로 모든 배터리부들의 배터리 상태를 비교하여 충전 그룹과 방전 그룹으로 그룹화하는 단계; 및c) 상기 프로세서에서 배터리 동작 모드를 확인하여, 충전 모드이면 상기 충전 그룹에 속한 배터리들을 충전하고, 방전 모드이면 상기 방전 그룹에 속한 배터리들을 방전시켜, 밸런싱을 수행하는 단계를 포함하는 에너지 저장 시스템의 배터리 오토 밸런싱 방법.
- 제4항에 있어서,상기 a) 단계는,모든 배터리들의 전압을 순차적으로 검출하고, 그 값에 따라 갱신 가능한 최대 전압과 최소 전압값을 추출하는 것을 특징으로 하는 에너지 저장 시스템의 배터리 오토 밸런싱 방법.
- 제4항에 있어서,상기 b) 단계는,상기 최대 전압과 모든 배터리들의 전압을 비교하여 배터리들 중 최대 전압을 기준으로 안전전압범위 내의 전압값을 가지는 배터리를 포함하는 배터리부를 방전 그룹으로 설정하고,상기 최소 전압을 기준으로 안전전압범위 내의 전압값을 가지는 배터리를 포함하는 배터리부를 충전 그룹으로 설정하는 것을 특징으로 하는 에너지 저장 시스템의 배터리 오토 밸런싱 방법.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/257,210 US20240039302A1 (en) | 2020-12-31 | 2021-11-15 | Battery auto-balancing device and method for energy storage system |
EP21915506.6A EP4274053A1 (en) | 2020-12-31 | 2021-11-15 | Battery auto-balancing device and method for energy storage system |
AU2021412527A AU2021412527A1 (en) | 2020-12-31 | 2021-11-15 | Battery auto-balancing device and method for energy storage system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020200188941A KR102583291B1 (ko) | 2020-12-31 | 2020-12-31 | 에너지 저장 시스템의 배터리 오토 밸런싱 장치 및 방법 |
KR10-2020-0188941 | 2020-12-31 |
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JP2013158190A (ja) * | 2012-01-31 | 2013-08-15 | Toyota Industries Corp | 均等化装置 |
KR20140087503A (ko) * | 2012-12-31 | 2014-07-09 | 주식회사 포스코아이씨티 | 배터리 에너지 저장 시스템 및 그 제어 방법 |
KR101563075B1 (ko) | 2014-01-07 | 2015-10-23 | 에스케이이노베이션 주식회사 | 에너지 저장 시스템의 배터리 랙 밸런싱 장치 및 방법 |
KR101619268B1 (ko) * | 2015-03-20 | 2016-05-10 | 포항공과대학교 산학협력단 | 배터리셀의 밸런싱 방법 |
KR20200000060A (ko) * | 2018-06-22 | 2020-01-02 | 두산중공업 주식회사 | 에너지 저장 시스템의 셀 밸런싱 방법 |
KR20200086960A (ko) * | 2019-01-10 | 2020-07-20 | 주식회사 엘지화학 | 배터리 밸런싱 장치, 방법 및 이를 포함하는 배터리 팩 |
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KR20140128468A (ko) * | 2013-04-18 | 2014-11-06 | 에스케이이노베이션 주식회사 | 배터리 밸런싱 장치 및 방법 |
KR101906384B1 (ko) * | 2016-10-31 | 2018-10-11 | 한국전력공사 | 배터리 셀 밸런싱 장치 |
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JP2013158190A (ja) * | 2012-01-31 | 2013-08-15 | Toyota Industries Corp | 均等化装置 |
KR20140087503A (ko) * | 2012-12-31 | 2014-07-09 | 주식회사 포스코아이씨티 | 배터리 에너지 저장 시스템 및 그 제어 방법 |
KR101563075B1 (ko) | 2014-01-07 | 2015-10-23 | 에스케이이노베이션 주식회사 | 에너지 저장 시스템의 배터리 랙 밸런싱 장치 및 방법 |
KR101619268B1 (ko) * | 2015-03-20 | 2016-05-10 | 포항공과대학교 산학협력단 | 배터리셀의 밸런싱 방법 |
KR20200000060A (ko) * | 2018-06-22 | 2020-01-02 | 두산중공업 주식회사 | 에너지 저장 시스템의 셀 밸런싱 방법 |
KR20200086960A (ko) * | 2019-01-10 | 2020-07-20 | 주식회사 엘지화학 | 배터리 밸런싱 장치, 방법 및 이를 포함하는 배터리 팩 |
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AU2021412527A1 (en) | 2023-07-06 |
KR20220096471A (ko) | 2022-07-07 |
EP4274053A1 (en) | 2023-11-08 |
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