WO2018074808A1 - 충전전압 공급장치 및 공급방법 - Google Patents
충전전압 공급장치 및 공급방법 Download PDFInfo
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- WO2018074808A1 WO2018074808A1 PCT/KR2017/011446 KR2017011446W WO2018074808A1 WO 2018074808 A1 WO2018074808 A1 WO 2018074808A1 KR 2017011446 W KR2017011446 W KR 2017011446W WO 2018074808 A1 WO2018074808 A1 WO 2018074808A1
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- Prior art keywords
- voltage
- cell balancing
- cell
- charging
- voltage source
- Prior art date
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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
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
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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
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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
-
- 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
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
-
- 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
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
- H02J7/0049—Detection of fully charged condition
-
- 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
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
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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
- H02J7/007—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
- H02J7/007184—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage in response to battery voltage gradient
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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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
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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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/40—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries adapted for charging from various sources, e.g. AC, DC or multivoltage
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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 a charging voltage supply device and method, and more particularly, when cell balancing is required, a charging voltage for supplying a fast and stable charging voltage to a corresponding cell through a cell balancing voltage source of two separately configured charging voltage sources. It relates to a supply apparatus and a method.
- Batteries such as lithium ion batteries are used as power sources for various electronic devices.
- a battery is composed of a plurality of unit cells (cell), the plurality of cells are different in charge voltage due to the difference in the individual dynamic state due to the coulombic efficiency and capacity as time passes by use Phenomenon occurs.
- the battery will not only charge but also discharge even if all other cells have the appropriate charge voltage. Problems that cannot be performed may occur.
- battery packs require cell balancing, which means that the individual voltages charged in a cell are controlled to remain within an acceptable range based on a constant level.
- the conventional cell balancing method as the voltage of a cell having a high level flows through a resistor, the voltage is consumed by thermal energy to reduce voltage variation with other cells or use an element that stores energy such as an inductor and a capacitor. Since the voltage of a cell with a high level is moved to a cell with a low level, the entire cell has a uniform value. Therefore, the charger is supplied with a pack charge voltage that can only charge the battery pack.
- a method of performing balancing is used. However, a method of performing cell balancing by individually charging each cell in which a simpler imbalance occurs is not presented.
- the present invention provides a charging voltage supply device and a supply method that can quickly and efficiently perform charging of each unbalanced cell.
- the charging voltage supply device is a charging voltage supply device for supplying a charging voltage through two voltage sources providing a different voltage, the input unit for receiving an AC input power from the outside, the alternating current coming from the input unit
- a converter for converting an input power into a DC input power
- an MCU controlling the voltage of the DC input power converted by the converter to be transmitted to and supplied to one of the two voltage sources, and one of the two voltage sources under control of the MCU
- a switching unit connected to one voltage source circuit to transfer the voltage of the DC input power, wherein the two voltage sources convert the voltage of the DC input power so as to charge a battery pack including two or more battery cells.
- a pack charging voltage source for outputting the two or more It converts the voltage of the direct current input power to the battery cell to charge the battery cell that requires cell balancing of the cell consists of a balancing voltage source for outputting a cell balance voltage.
- a voltage output unit configured to input voltages of the pack charging voltage source and the cell balancing voltage source and output them to the battery pack or the plurality of battery cells.
- the switching unit includes a plurality of switches connected to the MCU and the converter.
- the charging voltage supply method is a method for supplying a charging voltage so that the voltage of two or more battery cells configured in the battery pack is uniformly charged, the battery pack charging step of performing the charging of the battery pack, In the battery pack charging step, if a cell imbalance is generated in a cell in the battery pack being charged and cell balancing is required, the cell balancing diagnosis step and the cell balancing diagnosis step diagnoses that cell balancing is necessary. And a switch control step of connecting a circuit that has been connected to the pack charging voltage source with the cell balancing voltage source so that the cell balancing voltage is supplied to the corresponding cell requiring cell balancing.
- the cell balancing diagnosis step may include: a cell voltage measurement step of periodically measuring respective voltages of the at least two battery cells; a voltage deviation calculation step between the cells using two or more battery cell voltages measured in the cell voltage measurement step; And a voltage deviation comparison step of comparing the voltage deviation between cells calculated in the deviation calculation step and the voltage deviation in a predetermined range.
- the switch control step if the voltage deviation between cells is larger than the predetermined voltage deviation, the switch control step is performed.
- the switch connecting the converter and the pack charging voltage source is turned off, and the switch connecting the converter and the cell balancing voltage source is turned on.
- the converter and the pack charging voltage source are switched off so as to be connected to the battery pack charging circuit by switching off the circuit connected to the converter and the cell balancing voltage source to perform cell balancing. Turn on the switch.
- the switch of the circuit connected to the converter and the cell balancing voltage source is turned off to perform cell balancing.
- a charging voltage supply device and a supply method further include a cell balancing voltage source in an existing charger to supply cell balancing voltage only to a corresponding cell when voltage imbalance occurs. Cell balancing can be performed.
- FIG. 1 is a block diagram of a charging voltage supply device according to an embodiment of the present invention.
- FIG. 2 is a flow chart of a charging voltage supply method according to an embodiment of the present invention.
- FIG. 3 is a flow chart of a cell balancing diagnostic step of the charging voltage supply method according to an embodiment of the present invention.
- first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of identifying one component from another component.
- first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.
- the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.
- the charging voltage supply device of the present invention additionally configures a cell balancing voltage source in a pack charging voltage source and provides a cell balancing voltage so that the cell is charged when cell balancing is required.
- FIG. 1 is a block diagram of a charging voltage supply device according to an embodiment of the present invention.
- the charging voltage supply device 100 may provide an input unit 110 for receiving an AC input power from the outside as the charging voltage is supplied through two voltage sources providing different voltages.
- MCU 130 for instructing to be transmitted to the voltage source of the control unit and the switching unit 140 is connected to one of the voltage source circuit of the two voltage sources according to the command of the MCU 130 to transfer the voltage of the DC input power. do.
- the converter 120 is electrically connected to the ground.
- the cells of the battery pack may be connected in parallel to increase the capacity of the battery pack and have a constant voltage.
- the two voltage sources provide a cell charging voltage such that the cell needs a cell balancing voltage to be charged from a pack charging voltage source 150 providing a pack charging voltage to charge the battery pack and a plurality of battery cells constituting the battery pack. It refers to the voltage source 160.
- the cell balancing voltage source 160 may output a predetermined cell balancing voltage by converting the voltage of the DC input power to supply the cell balancing voltage to the corresponding cell to perform cell balancing. Can be.
- the pack charging voltage is set to 16.8V but is not limited thereto.
- the predetermined cell balancing voltage is set to 5V according to an embodiment, but is not limited thereto.
- the pack charging voltage source 150 and the cell balancing voltage source 160 further include a configuration for dropping the voltage of the DC input power converted by the converter 120 to the appropriate output voltage.
- the cell balancing voltage source 160 drops and outputs an input external power supply to a voltage required for balancing battery cells.
- the cell balancing voltage source 160 may include a voltage drop circuit that receives an external input voltage and drops it to the cell balancing voltage.
- the pack charging voltage source 150 drops and outputs an input external power supply to a voltage required for charging the battery pack.
- the pack charging voltage source 150 may include a voltage drop circuit that receives an external input voltage and drops it to the pack charging voltage.
- the output of the pack charging voltage source 150 and the cell balancing voltage source 160 may be output to the battery pack or the plurality of battery cells through the voltage output unit 170.
- the MCU 130 is controlled by a BMS (not shown) of the battery pack, and the MCU 130 and the BMS (not shown) communicate with each other using communication.
- the communication may transmit a command using an internal communication scheme such as I2C, SMBus, CAN, UART, and SPI.
- the BMS may stop the supply of the pack charging voltage to the MCU 130 and convert the pack charging voltage into the cell balancing voltage to supply the command. send.
- the BMS (not shown) determines that an additional pack charging voltage is required after the cell balancing ends, the BMS (not shown) stops supplying the cell balancing voltage to the MCU 130 and converts the cell balancing voltage into the pack charging voltage. Send the command to switch to supply.
- the switching unit 140 is composed of a plurality of switches connected and controlled with the MCU 130 so that the converter 120 and the pack charging voltage source 150 or the cell balancing voltage source 160 is connected or disconnected.
- the switch of the circuit in which the pack charging voltage source 150 is connected is turned off, and the switch in which the cell balancing voltage source 160 is connected is turned on to the converter (
- the voltage of the DC charging power converted from 120 may be supplied. Accordingly, when the cell balancing voltage is required, the charging voltage supply device 100 of the present invention is applied to the cell balancing voltage by the cell balancing voltage source 160, and the cell balancing voltage is not necessary and the battery pack needs to be charged.
- the pack charging voltage is applied to the battery pack by the pack charging voltage source 150.
- the switch device of the switching unit 140 may be used using a metal oxide field effect transistor (MOSFET), a bipolar junction transistor (BJT), an insulated gate bipolar transistor (IGBT), or the like.
- MOSFET metal oxide field effect transistor
- BJT bipolar junction transistor
- IGBT insulated gate bipolar transistor
- the charging voltage supply device 100 receives the AC input power input from the outside through the input unit 110, the received AC input power is converted into a DC input power by the converter 120.
- the BMS (not shown) diagnoses cell balancing and performs cell balancing on the MCU 130 when cell balancing is required. Send the command.
- the MCU 130 receiving the cell balancing command switches the circuit through the switching unit 140 and supplies the voltage of the DC input power converted by the converter 120 to the cell balancing voltage source 160.
- the switch connected to the pack charging voltage source 150 of the switching unit 140 is turned off and the switch connected to the cell balancing voltage source 160 is turned on.
- the BMS determines whether to recharge the battery pack or stop charging.
- the BMS transmits a battery pack charging resume command to the MCU (130).
- the MCU 130 receiving the battery pack charging resume command controls the switching unit 140 to switch the circuit so that the circuit connected to the cell balancing voltage source 160 is connected to the pack charging voltage source 150 again.
- the switch connected to the cell balancing voltage source 160 is turned off and the switch connected to the pack charging voltage source 150 is turned on.
- the BMS determines that the charge of the battery pack and cell balancing is complete and stops charging
- the BMS transmits a battery pack charge stop command to the MCU 130
- the MCU 130 controls the switching unit 140 to release the circuit connection between the pack charging voltage source 150 and the cell balancing voltage source 160.
- the switch connected to the cell balancing voltage source 160 of the switching unit 140 is turned off.
- the driving method is a method of determining whether or not cell balancing is performed in real time.
- This method has a disadvantage in that an algorithm is complicated because a voltage must be measured and determined in real time.
- another driving method is a method of performing cell balancing after completing the charging of the battery pack.
- the BMS measures the voltage of each cell of the battery pack and compares the measured cell voltage value with a predetermined voltage value.
- the switching unit 140 is controlled to switch the circuit connected to the pack charging voltage source 150 to be connected to the cell balancing voltage source 160.
- the switch connected to the pack charging voltage source 150 of the switching unit 140 is turned off and the switch connected to the cell balancing voltage source 160 is turned on.
- the circuit connected to the cell balancing voltage source 160 allows the voltage of the DC input power converted by the converter 120 to be supplied.
- the BMS (not shown) transmits a battery pack charging stop command to the MCU 130, and the MCU 130 switches.
- the control unit 140 controls the circuit connection between the pack charging voltage source 150 and the cell balancing voltage source 160.
- the switch connected to the cell balancing voltage source 160 of the switching unit 140 is turned off.
- the charging voltage supplying method of the present invention is a method for supplying a cell balancing voltage to a corresponding cell requiring cell balancing by converting the pack charging voltage supplying circuit into a cell balancing voltage supplying circuit when cell balancing is required when charging a battery pack.
- FIG. 2 is a flow chart of a charging voltage supply method according to an embodiment of the present invention.
- the charging voltage supply method first performs the charging of the battery pack from the power source from the outside (battery pack charging step: S210), the voltage imbalance in the cells of the battery pack being charged When it occurs, it is diagnosed whether the corresponding cell needs cell balancing (cell balancing diagnosis step: S220).
- cell balancing diagnosis step: S220 the switch is controlled to be connected to a circuit for performing cell balancing in a connected circuit to charge an existing battery pack.
- the circuit for performing cell balancing refers to a circuit in which a cell balancing voltage is supplied to a cell requiring cell balancing.
- the switch control in the switch control step (S230) is turned off the switch connecting the converter 120 and the pack charging voltage source 150, the switch connecting the converter 120 and the cell balancing voltage source 160 on Let's do it.
- the charging voltage for charging the battery pack is set to 16.8V as an embodiment, but is not limited thereto.
- the cell balancing voltage is set to 5V as the voltage used in the cell, but is not limited thereto.
- the switch connected to the cell balancing voltage source 160 is turned off so that the circuit connected to the battery pack charging circuit is again connected to perform cell balancing.
- the switch connected to the charging voltage source 150 is turned on.
- the switch connected to the cell balancing voltage source 160 is turned off to perform cell balancing.
- the cell balancing diagnosis step S220 will be described in detail with reference to FIG. 3.
- FIG. 3 is a flowchart illustrating a cell balancing diagnosis step of a charging voltage supply method according to an embodiment of the present invention.
- each voltage of the two or more battery cells is periodically measured (cell voltage measuring step S221), and the voltage between cells using two or more battery cell voltages measured in the cell voltage measuring step S221.
- the deviation is calculated (voltage deviation calculation step: S222).
- the voltage deviation of the cell calculated in the voltage deviation calculation step S222 is compared with the voltage deviation in a predetermined range (voltage deviation comparison step: S223).
- the switch control step (S230) is performed.
- the cycle is a cycle arbitrarily set by the user and the interval is set within a range in which the charging efficiency of the battery pack is not lowered.
- the voltage deviation calculation method is a method of subtracting the voltage value of each cell from the highest value using the highest value among the voltages measured in each cell.
- the predetermined voltage range is set to a range in which efficient battery pack charging is possible while reducing the time for charging a cell requiring cell balancing with a small amount of cell balancing voltage.
- the embodiment is a method of determining whether or not cell balancing is performed in real time.
- This method has a disadvantage in that an algorithm is complicated because voltage should be measured and determined in real time.
- Another embodiment is a method of performing cell balancing after completing the charging of a battery pack.
- the battery pack is charged using an external power source, and each voltage of two or more battery cells is measured.
- the switching switch is switched to be connected from the connected circuit to a circuit for performing cell balancing.
- the circuit connected to the cell balancing voltage source 160 is switched off to block the cell balancing.
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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
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- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
Description
Claims (9)
- 상이한 전압을 제공하는 두 개의 전압원을 통해 충전전압을 공급하는 충전전압 공급장치에 있어서,외부로부터 들어오는 교류 입력전원을 수용하는 입력부;상기 입력부로부터 들어오는 교류 입력전원을 직류 입력전원으로 변환하는 컨버터;상기 컨버터에서 변환된 직류 입력전원의 전압이 상기 두 개의 전압원 중 하나의 전압원으로 전달되어 공급되도록 제어하는 MCU; 및상기 MCU의 제어에 따라 상기 두 개의 전압원 중 하나의 전압원 회로와 연결시켜 상기 직류 입력전원의 전압을 전달하는 스위칭부; 를 포함하여 구성되고,상기 두 개의 전압원은,둘 이상의 배터리 셀로 구성된 배터리 팩이 충전되도록 상기 직류 입력전원의 전압을 변환하여 팩 충전전압을 출력하는 팩 충전 전압원; 및상기 둘 이상의 배터리 셀 중 셀 밸런싱이 필요한 배터리 셀이 충전되도록 상기 직류 입력전원의 전압을 변환하여 셀 밸런싱 전압을 출력하는 셀 밸런싱 전압원; 으로 구성되는 것을 특징으로 하는 충전전압 공급장치.
- 청구항 1에 있어서,상기 팩 충전 전압원 및 셀 밸런싱 전압원의 전압이 입력되어 상기 배터리 팩 또는 둘 이상의 배터리 셀에 출력하는 전압 출력부; 를 추가로 포함하여 구성되는 것을 특징으로 하는 충전전압 공급장치.
- 청구항 1에 있어서,상기 스위칭부는, 상기 MCU 및 컨버터와 연결되는 복수 개의 스위치로 구성되는 것을 특징으로 하는 충전전압 공급장치.
- 둘 이상의 배터리 셀의 전압이 균일하게 충전되도록 전압을 공급하는 방법에 있어서,상기 둘 이상의 배터리 셀을 구성하는 배터리 팩의 충전을 수행하는 배터리 팩 충전단계;상기 배터리 팩 충전단계에서 충전 중인 배터리 팩 내 셀에 전압 불균형이 발생되어 셀 밸런싱을 필요로 하는지 진단하는 셀 밸런싱 진단단계; 및상기 셀 밸런싱 진단단계에서 셀 밸런싱이 필요한 것으로 진단된 경우, 스위치를 제어하여 셀 밸런싱이 필요한 해당 셀에 셀 밸런싱 전압이 공급되도록 팩 충전 전압원과 연결되었던 회로를 셀 밸런싱 전압원과 연결시키는 스위치 제어단계;를 포함하여 구성되는 것을 특징으로 하는 충전전압 공급방법.
- 청구항 4에 있어서,상기 셀 밸런싱 진단단계는,상기 둘 이상의 배터리 셀의 각 전압을 주기적으로 측정하는 셀 전압 측정단계;상기 셀 전압 측정단계에서 측정된 둘 이상의 배터리 셀 전압을 이용하여 셀간의 전압편차를 연산하는 전압편차 연산단계; 및상기 전압편차 연산단계에서 연산된 셀간의 전압편차와 기 설정된 소정 범위의 전압편차를 비교하는 전압편차 비교단계;를 포함하여 구성되는 것을 특징으로 하는 충전전압 공급방법.
- 청구항 5에 있어서,상기 전압편차 비교단계에서 셀간의 전압편차가 기 설정된 소정 범위의 전압편차보다 큰 경우, 상기 스위치 제어단계를 수행하는 것을 특징으로 하는 충전전압 공급방법.
- 청구항 4에 있어서,상기 스위치 제어단계는, 상기 컨버터와 팩 충전 전압원을 연결하는 스위치를 오프 시키고, 컨버터와 셀 밸런싱 전압원을 연결하는 스위치를 온 시키는 것을 특징으로 하는 충전전압 공급방법.
- 청구항 4에 있어서,셀 밸런싱 종료 후 상기 배터리 팩에 추가적인 충전이 필요하다고 판단한 경우, 셀 밸런싱을 수행하기 위하여 상기 컨버터와 셀 밸런싱 전압원이 연결된 회로의 스위치를 오프 시키고, 다시 배터리 팩 충전회로로 연결되도록 컨버터와 팩 충전 전압원의 스위치를 온 시키는 것을 특징으로 하는 충전전압 공급방법.
- 청구항 4에 있어서,셀 밸런싱 종료 후 상기 배터리 팩이 충전이 완료된 것으로 판단한 경우, 셀 밸런싱을 수행하기 위하여 상기 컨버터와 셀 밸런싱 전압원이 연결된 회로의 스위치를 오프 시키는 것을 특징으로 하는 충전전압 공급방법.
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EP17861491.3A EP3393000B1 (en) | 2016-10-21 | 2017-10-17 | Charging voltage supply apparatus and supply method |
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US10811887B2 (en) | 2020-10-20 |
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US20190052099A1 (en) | 2019-02-14 |
JP2019502350A (ja) | 2019-01-24 |
EP3393000B1 (en) | 2021-04-21 |
JP6591683B2 (ja) | 2019-10-16 |
CN108604810A (zh) | 2018-09-28 |
KR20180044484A (ko) | 2018-05-03 |
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