WO2021091190A1 - Appareil de charge utilisant un appareil d'ess - Google Patents

Appareil de charge utilisant un appareil d'ess Download PDF

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Publication number
WO2021091190A1
WO2021091190A1 PCT/KR2020/015199 KR2020015199W WO2021091190A1 WO 2021091190 A1 WO2021091190 A1 WO 2021091190A1 KR 2020015199 W KR2020015199 W KR 2020015199W WO 2021091190 A1 WO2021091190 A1 WO 2021091190A1
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WIPO (PCT)
Prior art keywords
ess
converter
voltage
module
target battery
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PCT/KR2020/015199
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English (en)
Korean (ko)
Inventor
백주원
김명호
김호성
류명효
Original Assignee
한국전기연구원
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Publication of WO2021091190A1 publication Critical patent/WO2021091190A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • B60L53/24—Using the vehicle's propulsion converter for charging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/19—Switching between serial connection and parallel connection of battery modules
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33538—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only of the forward type
    • H02M3/33546—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only of the forward type with automatic control of the output voltage or current
    • H02M3/33553—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only of the forward type with automatic control of the output voltage or current with galvanic isolation between input and output of both the power stage and the feedback loop
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/10—DC to DC converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Definitions

  • the present application relates to a charging device for a battery such as an electric vehicle, and to a charging device using an ESS device capable of reducing the device capacity of a converter required for the charging device and increasing the charging system efficiency.
  • the battery capacity is gradually increasing, and the battery charging voltage is also increasing in order to cope with the increase in battery capacity. Accordingly, the charger output voltage is also increasing to 1000V.
  • the capacity of the charger is also being increased in high voltage and high-capacity, and recently, large-capacity chargers of around 100-400kW are being developed.
  • the charging current capacity For rapid charging of the battery, the charging current capacity must be increased in proportion, and the charger capacity increases in proportion to the product of the output voltage of the charger and the charging current. Therefore, since the capacity and size of a fast large-capacity charger are directly linked to the rapid charging time and the battery capacity, the capacity of the charger is increasing in proportion to the battery size and charging time with the existing technology.
  • the present application aims to provide a charging device using an ESS device capable of reducing the device capacity of a converter required for the charging device and increasing the charging system efficiency while reducing the burden on the receiving capacity by utilizing the ESS device.
  • a charging device using an ESS (Energy Storage System) device includes an ESS device for storing electric energy; And a DC-DC converter in which a primary module is connected in parallel with the ESS device, and a secondary module is connected in series between the ESS device and a target battery, wherein the DC-DC converter comprises one end of the primary module. And one end of the secondary module are connected to each other, both ends of the primary module are connected in parallel with the ESS device, and the other end of the secondary module may be connected in series with the target battery.
  • ESS Electronicgy Storage System
  • the ESS voltage of the ESS device is lower than the discharge end voltage of the target battery, and the DC-DC converter may apply an output positive voltage to the target battery and an output negative voltage to the ESS device.
  • a charging device using an ESS (Energy Storage System) device includes an ESS device for storing electrical energy; And a DC-DC converter in which a primary module is connected in series between the ESS device and a target battery, and a secondary module is connected in parallel with the target battery, wherein the DC-DC converter comprises one end of the primary module and One end of the secondary module is connected to each other, the other end of the primary module is connected in series with the ESS device, and both ends of the secondary module may be connected in parallel with the target battery.
  • ESS Electronicgy Storage System
  • the ESS voltage of the ESS device is higher than the maximum charging voltage of the target battery, and the DC-DC converter may apply an output positive voltage to the ESS device and the output negative voltage to the target battery.
  • the DC-DC converter may be an insulated converter having an insulating structure.
  • a charging device using an ESS (Energy Storage System) device includes an ESS (Energy Storage System) device for storing electrical energy; A first DC-DC converter in which one end of the primary-side module and one end of the secondary-side module are connected to each other, and the ESS device is connected in parallel to the primary-side module; And a second DC-DC converter in which one end of the primary module and one end of the secondary module are connected to each other, and the target battery is connected in parallel to the secondary module, wherein the secondary module of the first DC-DC converter The other end of and the other end of the primary module of the second DC-DC converter may be connected in series with each other.
  • the first DC-DC converter when the voltage of the ESS device is lower than the voltage of the target battery, the first DC-DC converter operates, the second DC-DC converter bypasses, and the voltage of the ESS device is If the voltage is higher than the voltage, the second DC-DC converter may operate, and the first DC-DC converter may bypass.
  • the burden on receiving capacity can be reduced.
  • the sum voltage of the ESS voltage and the converter voltage of the DC-DC converter is applied to the target battery through a DC-DC converter connected in series to the ESS device. I can. Accordingly, it is possible to simultaneously reduce the device capacity required for the DC-DC converter and minimize the conversion loss occurring in the energy conversion process.
  • FIG. 1 is a block diagram showing a charging device using an ESS device according to an embodiment of the present invention.
  • FIG. 2 is a circuit diagram showing a charging device using an ESS device according to an embodiment of the present invention.
  • FIG. 3 is an equivalent circuit of a charging device using an ESS device according to an embodiment of the present invention.
  • FIG. 4 is a block diagram showing a charging device using an ESS device according to another embodiment of the present invention.
  • FIG. 5 is a block diagram showing a charging device using an ESS device according to another embodiment of the present invention.
  • FIG. 6 is a block diagram showing a charging device using a conventional ESS device.
  • a charging device for an electric vehicle it can be configured in a manner in which direct current rectified from the input AC voltage is linked to a charger, and depending on the embodiment, in order to prevent the lack of receiving capacity, a separate ESS (Energy Storage System) It may further include equipment and a converter for linking it.
  • ESS Electronicgy Storage System
  • an electric vehicle charging device may be composed of an insulated converter circuit according to the IEC (International Electronical Commission) standard, and a constant current for voltage fluctuations from the discharge final voltage of the electric vehicle battery to the maximum charging voltage. Control or constant voltage control can be performed. That is, initially, the charging current is supplied through constant constant current control, and then, constant voltage control may be performed after the battery of the electric vehicle reaches a constant charging voltage.
  • the isolated converter may be composed of various circuits, and a soft switching method may be used to improve efficiency.
  • the DC-DC converter 12 In the case of the conventional electric vehicle charging device 10, as shown in FIG. 6, after receiving an input from the ESS device 11 to generate an output, it may be directly connected to the target battery 1 in parallel.
  • the DC-DC converter 12 since the DC-DC converter 12 has a structure in which the ESS device 11 and the target battery 1 are connected in parallel on the input side and the output side, respectively, the DC-DC converter 12 is a device equal to the charging capacity of the entire system. It must be configured to have a capacity.
  • the charging capacity and the device capacity required for the DC-DC converter 12 are gradually increasing, and accordingly, problems such as economical efficiency and efficiency of the facility have arisen.
  • the charging device it is possible to implement a structure in which the DC-DC converter bears only a part of the output capacity. That is, it is possible to reduce the device capacity required for the DC-DC converter, and at the same time, it is possible to increase the system efficiency by minimizing the conversion loss during power conversion in the DC-DC converter.
  • a charging device according to an embodiment of the present invention will be described with reference to FIG. 1.
  • FIG. 1 is a block diagram showing a charging device using an ESS device according to an embodiment of the present invention.
  • a charging device 100 using an ESS device may include an ESS device 110 and a DC-DC converter 120.
  • FIG. 1 corresponds to a case where the ESS voltage of the ESS device 110 is lower than the lowest voltage of the target battery 1, that is, the discharge stop voltage.
  • the ESS device 110 can store electrical energy, and the electrical energy stored in the ESS device 110 is supplied to the target battery 1 through the DC-DC converter 120 to charge the target battery 1.
  • the ESS device 110 may receive and store power from the grid power connected to the charging device 100, and depending on the embodiment, power from energy modules that produce renewable energy such as solar, wind, and hydropower It is also possible to receive and store.
  • the target battery 1 may be a battery of an electric vehicle, and various types of batteries may be applicable.
  • the DC-DC converter 120 may convert a DC voltage or current output from the ESS device 110 into a DC voltage or current for charging the target battery 1.
  • the DC-DC converter 120 may include a primary side module 121, a transformer module 122, and a secondary side module 123.
  • the primary-side module 121 may convert the input ESS voltage V ess of the ESS device 110 into a first AC voltage. That is, in order to convert the received ESS voltage (V ess ) into an output voltage corresponding to the target battery 1, the primary module 121 first converts the DC ESS voltage V ess to the first AC voltage of AC. Can be converted.
  • the primary-side module 121 may include a plurality of switches and capacitors, and may convert a DC ESS voltage V ess into a first AC voltage by switching operations of the switches. The operation of each of the switches may be controlled by a control unit (not shown), and the converted first AC voltage may be applied to the transforming module 122 afterwards.
  • the primary-side module 121 may be implemented as an insulated converter having an insulation structure, and is implemented in the form of various types of insulated converters such as the structure of the full-bridge converter shown in FIG. 2 and the half-bridge converter. It is possible.
  • the transformation module 122 may receive a first AC voltage from the primary-side module 121 and may transform the first AC voltage into a second AC voltage according to a set winding ratio.
  • the secondary module 123 may rectify the second AC voltage received from the transformer module 122 to generate a DC output voltage.
  • the secondary module 123 may include a plurality of switches and capacitors, and may convert the second AC voltage into a DC output voltage by switching operations of the switches. Here, the operation of each of the switches may be controlled by a control unit (not shown), and the converted output voltage may be applied to the target battery 1.
  • the secondary module 123 may be implemented in various types of insulated converter structures such as a full-bridge converter and a half-bridge converter.
  • the primary-side module 121 is connected in parallel with the ESS device 110, and the secondary-side module 123 May be implemented to be connected in series between the ESS device 110 and the target battery 1. That is, one end (n1) of the primary-side module 121 and one end (n4) of the secondary-side module 123 are connected to each other by a connection lead (A), so that the secondary-side module 123 is connected to the ESS device 110 It can be implemented to be connected in series between the and the target battery (1). Through this, both ends (n1, n2) of the primary-side module 121 may be connected in parallel with the ESS device 110, and the other end (n3) of the secondary-side module 123 may be connected in series with the target battery (1).
  • the DC-DC converter 120 can bear only part of the charging capacity. Accordingly, the device capacity required for the DC-DC converter 120 can be significantly reduced.
  • FIG. 3 is an equivalent circuit of a charging device using an ESS device according to an embodiment of the present invention.
  • the ESS voltage (V ess ) is lower than the discharge end voltage, which is the minimum voltage of the target battery 1, the difference voltage (V ess -V bat ) is always less than 0.
  • the DC-DC converter 120 applies a positive output voltage to the target battery 1, and the output negative voltage of the DC-DC converter 120 is applied to the ESS device 110. So, an equivalent circuit can be implemented.
  • the total output power supplied to the target battery 1 is the product of the ESS voltage (V ess ) and the charging current (i ch ) of the ESS device 110 and the DC-DC converter 120. It is the sum of the product of the converter voltage (V dc ) and the charging current (i ch ). Therefore, in the total output power supplied to the target battery 1, the converter output power that the DC-DC converter 120 is responsible for becomes a part of the whole, and the lower the converter voltage (V dc ) of the DC-DC converter 120 becomes. The converter output power becomes smaller.
  • This feature can act as a very big advantage in terms of efficiency. That is, the DC-DC converter 120 generally causes conversion loss, but since the DC-DC converter 120 only takes charge of a part of the total output capacity, the ratio of the loss to the total power of the system decreases in proportion.
  • the instantaneous efficiency of the entire system can be expressed as follows.
  • ⁇ system is the instantaneous efficiency of the entire system
  • V bat is the battery voltage of the target battery 1
  • V dc is the converter voltage output from the DC-DC converter 120
  • V ess is the ESS voltage of the ESS device 10
  • i ch is the charging current
  • ⁇ dc corresponds to the instantaneous efficiency of the DC-DC converter 120. Accordingly, referring to Equation 1, it can be seen that only a part of the amount of power and loss of the DC-DC converter 120 is reflected in the instantaneous efficiency of the entire system.
  • the battery voltage (V bat ) of the target battery 1 when the battery voltage (V bat ) of the target battery 1 is charged from the discharge end voltage to the maximum charging voltage, the ESS voltage (V ess ) of the ESS device 110 and the battery voltage of the target battery 1 are initially charged.
  • the difference in (V bat ) is very small and gradually increases.
  • the more increase the battery voltage (V bat) of the target battery 1 is a direct current-direct current converter ( 120) converter output power gradually increases.
  • the average value of the converter voltage V dc corresponds to half of the difference voltage between the ESS voltage and the battery voltage after charging. That is, since the voltage applied to the DC-DC converter 120 is smaller when compared with the average voltage, the amount of output power and the loss ratio of the DC-DC converter 120 in the system instantaneous efficiency are reduced, and the system efficiency is reduced. You can see that it is rising.
  • the loss of the DC-DC converter 120 is reduced as a whole. It can occupy a very small proportion of the system efficiency.
  • FIG. 4 is a block diagram showing a charging device 200 using an ESS device according to another embodiment of the present invention, when the ESS voltage V ess of the ESS device 110 is higher than the maximum charging voltage of the target battery 1 Corresponds to.
  • the difference voltage (V--V bat ) between the ESS voltage (V ess ) and the battery voltage (V bat ) is always greater than 0, the output negative voltage of the DC-DC converter 130 is used as the target battery (1).
  • the positive output voltage may be applied to the ESS device 110.
  • the primary module is connected in series between the ESS device 110 and the target battery 1, and the secondary module is connected in parallel with the target battery 1.
  • the other end n1 of the primary module may be connected in series with the ESS device 110, and both ends n3 and n4 of the secondary module may be connected in parallel with the target battery 1.
  • the configuration of the charging device 200 using the ESS device according to another embodiment of the present invention is partially changed compared to the charging device 100 using the ESS device of FIG. 1, but the basic operation principle is the structure of FIG. same.
  • the charging device 300 it is possible to implement the charging device 300 as shown in FIG. 5. That is, in the case of the charging device 100 of FIG. 1, the rated voltage of the ESS device 110 must be set below the discharge end voltage of the battery voltage (V bat ). V dc ) can make up a significant portion of the total voltage. Accordingly, in another embodiment of the present invention, the rated voltage of the ESS device 110 and the rated voltage of the target battery 1 are the same, and a plurality of insulated DC-DC converters 120 and 130 are connected to the input terminal and the output terminal. It can be implemented in a structure that is placed at the same time.
  • the first DC-DC converter 120 and the second DC-DC converter 130 have one end of the primary-side module and one end of the secondary-side module connected to each other.
  • the other end of the secondary module of the 1 DC-DC converter 120 and the other end of the primary module of the second DC-DC converter 130 may be connected in series with each other.
  • the ESS device 110 may be connected in parallel to the primary module of the first DC-DC converter 120, and the target battery 1 may be connected in parallel to the secondary module of the second DC-DC converter 130.
  • the first DC-DC converter 120 when the ESS voltage (V ess ) of the ESS device 110 is lower than the battery voltage (V bat ) of the target battery 1, the first DC-DC converter 120 operates, and the second DC-DC The converter 130 may be controlled to bypass.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Dc-Dc Converters (AREA)

Abstract

La présente demande concerne un appareil de charge utilisant un appareil de système de stockage d'énergie (ESS). L'appareil de charge utilisant un appareil d'ESS, selon un mode de réalisation de la présente invention, comprend : l'appareil d'ESS pour stocker de l'énergie électrique ; et un convertisseur de courant continu-courant continu ayant un module côté primaire connecté en parallèle avec l'appareil d'ESS et un module côté secondaire connecté en série entre l'appareil d'ESS et une batterie cible. Selon l'invention, dans le convertisseur de courant continu-courant continu, une extrémité du module côté primaire et une extrémité du module côté secondaire sont connectées l'une à l'autre, les deux extrémités du module côté primaire sont connectées en parallèle avec l'appareil d'ESS, et l'autre extrémité du module côté secondaire est connectée en série à la batterie cible.
PCT/KR2020/015199 2019-11-05 2020-11-03 Appareil de charge utilisant un appareil d'ess WO2021091190A1 (fr)

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KR10-2019-0140146 2019-11-05
KR1020190140146A KR20210054247A (ko) 2019-11-05 2019-11-05 Ess 장치를 이용한 충전장치

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023236119A1 (fr) * 2022-06-08 2023-12-14 北京小米移动软件有限公司 Module de circuit et dispositif électronique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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