WO2022039409A1 - 콘택터 관리 방법 및 그 방법을 제공하는 배터리 시스템 - Google Patents
콘택터 관리 방법 및 그 방법을 제공하는 배터리 시스템 Download PDFInfo
- Publication number
- WO2022039409A1 WO2022039409A1 PCT/KR2021/010007 KR2021010007W WO2022039409A1 WO 2022039409 A1 WO2022039409 A1 WO 2022039409A1 KR 2021010007 W KR2021010007 W KR 2021010007W WO 2022039409 A1 WO2022039409 A1 WO 2022039409A1
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- WIPO (PCT)
- Prior art keywords
- contactor
- main contactor
- operating voltage
- level
- control unit
- 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.)
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Classifications
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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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
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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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
-
- 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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/04—Cutting off the power supply under fault conditions
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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
- B60L53/10—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 the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
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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
- 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
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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
- 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
- B60L58/20—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 having different nominal voltages
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/006—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of too high or too low voltage
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- 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
- H02J7/60—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements
- H02J7/62—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements against overcurrent
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- 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
- H02J7/60—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements
- H02J7/663—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements using battery or load disconnect circuits
- H02J7/667—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements using battery or load disconnect circuits disconnection of loads if battery is not under charge, e.g. in vehicle if engine is not running
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/10—Vehicle control parameters
- B60L2240/12—Speed
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/48—Drive Train control parameters related to transmissions
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/547—Voltage
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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
- B60L2270/00—Problem solutions or means not otherwise provided for
- B60L2270/20—Inrush current reduction, i.e. avoiding high currents when connecting the battery
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- 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
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- 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
- B60Y2200/92—Hybrid vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/30—Sensors
- B60Y2400/308—Electric sensors
- B60Y2400/3086—Electric voltages sensors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
- H01H47/32—Energising current supplied by semiconductor device
- H01H47/325—Energising current supplied by semiconductor device by switching regulator
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/546—Contact arrangements for contactors having bridging contacts
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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
- 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
Definitions
- the present invention relates to a method for managing a main contactor electrically connecting a battery and an external device, and to a battery system providing the method.
- the electric vehicle may include a contactor that electrically connects or disconnects a battery and a load. When the contactor is closed, power is supplied from the battery to the load.
- the contactor is closed when the driving voltage is supplied, and is opened when the driving voltage is not supplied. If the driving voltage temporarily fluctuates in an unintended situation for some reason, the contactor may be opened momentarily. Because of the unintentional opening of the contactor, the control unit can automatically control the contactor to close again. In this case, when the DC-link load is large, the contactor is damaged by high inrush current, and when the damage is large, it can be welded in a closed state or an open state. Since the fused contactor cannot open or close under the control of the controller, replacement is required.
- the open state for the main contactor is maintained or re-closed (re). -close) to provide a contactor management method for determining whether or not and a battery system providing the method.
- the present invention provides a contactor management method for performing pre-charge using a pre-charge contactor when a main contactor needs to be re-closed, and a battery system providing the same.
- a battery system includes a main contactor connected between a battery pack and an external device, a precharge contactor connected in parallel with the main contactor, a voltage measuring unit for measuring an operating voltage supplied to the main contactor, and a control unit that determines an open event of the main contactor based on a change in the operating voltage measured by the voltage measuring unit, wherein the control unit includes, when the open event occurs, the operating voltage in a driving mode in which the vehicle is running
- the level of a driving signal that is controlled to be applied to the main contactor is determined. If the level of the driving signal is an enable level, the precharge contactor is closed and then the main contactor is closed, and the main contactor is closed. After a predetermined time has elapsed, the precharge contactor is opened.
- the controller may control the main contactor to maintain an open state when the level of the driving signal is a disabled level as a result of the determination.
- the controller may determine that the open event has occurred when the operating voltage supplied to the main contactor is not supplied.
- the control unit may determine the driving mode when the speed of the vehicle exceeds a preset reference speed or when the gear shift of the vehicle is a reverse gear, a neutral gear, or a drive gear.
- the control unit may further include a driving unit that receives the driving signal from the control unit and supplies the operating voltage to the main contactor according to the driving signal.
- the control unit may be a battery management system (BMS) that transmits the driving signal to the driving unit to control execution of an opening or closing operation of the main contactor.
- BMS battery management system
- the voltage measuring unit may be an analog-to-digital converter (ADC) that converts the operating voltage into a digital signal and transmits it to the control unit.
- ADC analog-to-digital converter
- a method for managing a contactor is a method in which a controller controls a main contactor connected between a battery pack and an external device and a precharge contactor connected in parallel with the main contactor to manage the main contactor, A step of generating an open event in which the main contactor is opened occurs; when the open event occurs, determining whether the vehicle is in a driving mode in which the vehicle is running; in the driving mode, a driving signal for controlling the operating voltage to be applied to the main contactor determining the level of , and if the level of the driving signal is an enable level as a result of the determination, the precharge contactor is closed and then the main contactor is closed, and the precharge contactor is closed after a predetermined time has elapsed in the closed state of the main contactor and opening the charge contactor.
- the step of determining whether the vehicle is in the driving mode in which it is running may include determining the driving mode when the speed of the vehicle exceeds a preset reference speed or the gear shift of the vehicle is a reverse gear, a neutral gear, or a drive gear. .
- the contactor management method may further include controlling the main contactor to maintain an open state when the level of the driving signal is a disabled level as a result of the determination.
- the present invention can protect the main contactor by maintaining the main contactor in an open state so that a high inrush current does not occur when the vehicle is in the parking mode in which the operation is stopped or the driving signal is at a disable level.
- FIGS. 2 and 3 are views illustrating before and after driving of a contactor according to an embodiment.
- FIG. 4 is a flowchart illustrating a method for managing a contactor according to an embodiment.
- FIG. 1 is a view for explaining a battery system according to an embodiment.
- the battery system 1 includes a battery pack 10 , a contactor 20 , a driving unit 30 , a voltage measuring unit (Analog-Digital Converter; ADC) 40 , and a control unit 50 .
- ADC Analog-Digital Converter
- the battery pack 10 includes a plurality of battery cells connected in series, and is connected between two output terminals OUT1 and OUT2 of the battery system 1 .
- a contactor 20 is connected between the positive electrode of the battery pack 10 and the output terminal OUT1 .
- the contactor 20 is connected between the battery pack 10 and an external device, and may include a main contactor 21 and a precharge contactor 22 connected in parallel with the main contactor 21 .
- the precharge contactor 22 is connected in series with the precharge resistor R, is closed according to the second driving signal SC2 of the enable level, and is driven with the second driving signal of the disable level. It may be opened according to the signal SC2.
- the contactor 20 is not clearly distinguished from a relay, and may be used in combination.
- the contactor 20 when opening and closing a circuit of high power (eg, 5KW or more), and when opening and closing a circuit of high power or less (eg, less than 5KW) may be referred to as a relay.
- the contactor 20 can be linked with an independent circuit, and has an advantage that it can electrically connect or disconnect a circuit of a large current due to the operation of a circuit composed of a low voltage meter such as 5V.
- the coil part and the contact part in the contactor 20 are insulated and separated, there is an advantage that it can be electrically insulated from an external device.
- the contactor 20 according to the embodiment may include a relay.
- the second switch 33 is connected between the precharge contactor 22 and the auxiliary battery 31 , and may be switched according to the enable level of the second driving signal SC2 .
- the second switch 33 controls the electrical connection between the precharge contactor 22 and the auxiliary battery 31 .
- the precharge contactor 22 and the auxiliary battery 31 are electrically connected. Then, the second operating voltage is supplied from the auxiliary battery 31 to the precharge contactor 22 , and the precharge contactor 22 is closed.
- the second switch 33 is turned off according to the second driving signal SC2 of the disable level, the precharge contactor 22 and the auxiliary battery 31 are electrically separated. Then, the second operating voltage is not supplied to the precharge contactor 22 , and the precharge contactor 22 is opened.
- the first operating voltage and the second operating voltage may be at the same level.
- the first operating voltage and the second operating voltage may be a voltage level corresponding to 12V, but is not limited thereto, and various voltage levels may be set as the operating voltage.
- the voltage measuring unit (ADC) 40 measures first and second operating voltages supplied to each of the main contactor 21 and the precharge contactor 22 , and sets the measured first and second operating voltages to the first and the second digital signal CV1/CV2. Specifically, the voltage measuring unit (ADC) 40 calculates the analog values of the first and second operating voltages supplied to the main contactor 21 and the precharge contactor 22, respectively, to the first and second digital signals CV1 . /CV2) and may be transmitted to the control unit 50 .
- the voltage measuring unit (ADC) 40 when a second operating voltage of 12V is supplied to the precharge contactor 22 , the voltage measuring unit (ADC) 40 outputs a second digital signal CV2 indicating a voltage level of 12V to the control unit 50 . can be forwarded to When the second operating voltage is not supplied to the precharge contactor 22 , the voltage measuring unit (ADC) 40 may transmit the second digital signal CV2 indicating a voltage level of 0V to the control unit 50 .
- the controller 50 may transmit the first driving signal SC1 and the second driving signal SC2 to the driving unit 30 to control switching of the main contactor 21 and the precharge contactor 22 .
- the control unit 50 may determine whether the main contactor 21 is physically open or closed based on a change in the first operating voltage measured by the voltage measuring unit (ADC) 40 .
- the controller 50 may be implemented as a battery management system (BMS) that generally controls and manages the battery system 1 .
- BMS battery management system
- the controller 50 may determine the physically open or closed state of the main contactor 21 without error based on the change in the first operating voltage.
- the control unit 50 When the main contactor 21 is opened, the control unit 50 maintains or restarts the open state with respect to the main contactor 21 based on the driving state of the vehicle and the first driving signal SC1. You can decide to re-close. Then, it is possible to prevent the main contactor 21 from being damaged by a high inrush current.
- the contactor 20 connects or disconnects the first and second points cut off on the power line L to control the flow of current between the battery pack 10 and an external device. can do.
- the control unit 50 transmits the first control signal SC1 of an enable level to the driving unit 30 .
- the first switch 32 is turned on.
- the power discharged from the auxiliary battery 31 may be supplied to the main contactor 21 .
- the level of power supplied to the main contactor 21 may be within a range (eg, 9V to 16V) of a rated operating voltage that allows the main contactor 21 to operate normally.
- the voltage measuring unit (ADC) 40 may measure the operating voltage supplied to the main contactor 21 and transmit information indicating the level of the measured operating voltage to the control unit 50 .
- the range of the rated operating voltage may vary depending on the type of the main contactor 21 .
- the contactor 20 may be configured in a plunger type including a contact unit 210 , a coil unit 220 , a plunger unit 214 , and a housing 230 .
- the contactor 20 is not limited to the plunger type, and as an electronic switch such as a hinge type electromagnetic relay type, when current flows through the coil and becomes an electromagnet, it pulls the iron piece and opens or closes the contact point attached to the iron piece. It may include a type of switch that operates as
- the contact unit 210 may include a first fixed contact unit 211 , a second fixed contact unit 212 , and a moving contact unit 213 .
- the first fixed contact unit 211 and the second fixed contact unit 212 are respectively connected to the first and second points disconnected from each other on the power line L, and the moving contact unit 213 is connected to the first and The second fixed contact units 211 and 212 are disposed to be spaced apart from each other by a predetermined distance.
- the moving contact unit 213 may be formed in a metal plate shape.
- the moving contact unit 213 may be in contact with or separated from the first and second fixed contact units 211 and 212 to control the flow of a large current on the power line L.
- the contact or release of contact between the moving contact unit 213 and the first and second fixed contact units 211 and 212 follows a linear reciprocating motion of the plunger unit 214 .
- the contactor 20 may have a different rated operating voltage according to the standard of the coil unit 220 .
- the contactor 20 may perform a close operation when an operating voltage (eg, 12V) of a predetermined level is supplied, and may perform an open operation when the operating voltage is not supplied.
- the electric vehicle may include an auxiliary battery 31 of 12V voltage in addition to the high voltage battery pack 10 , and may be used as a power source for supplying an operating voltage to the contactor 20 .
- the auxiliary battery 31 may be used as a power source for starting the engine or for various electrical components such as a vehicle headlight.
- the fix core 217 serves to limit the moving distance between the moving core 215 and the plunger shaft 216 .
- the fixed core 217 is fixed in the central passage of the coil unit 220 , and has an inner diameter through which the plunger shaft 216 can pass but the moving core 215 cannot pass through in a hollow shape.
- the moving core 215 comes into contact with the fixed core 217 by the electromagnetic force of the coil unit 220 in the +Y-axis direction. can move to In this case, the moving distance of the moving core 215 corresponds to the distance between the moving contact unit 213 and the first and second fixed contact units 211 and 212 .
- the main contactor 21 is closed when the first operating voltage is supplied, and is opened when the 1 operating voltage is not supplied.
- the voltage measuring unit (ADC) 40 may measure the first operating voltage supplied to the main contactor 21 , convert the measured first operating voltage into a first digital signal CV1 , and transmit it to the control unit 50 . there is.
- the controller 50 may determine a physical open event of the main contactor 21 based on a change in the first operating voltage measured by the voltage measuring unit (ADC) 40 . When the first operating voltage is not supplied to the main contactor 21 , the controller 50 may determine that an open event of the main contactor 21 occurs.
- ADC voltage measuring unit
- control unit 50 determines whether the level of the first driving signal is an enable level (S130).
- the main contactor 21 may be maintained in an open state without being closed to control so that an overcurrent is not applied to the main contactor 21 .
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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)
- Electric Propulsion And Braking For Vehicles (AREA)
- Keying Circuit Devices (AREA)
Abstract
Description
Claims (11)
- 배터리 팩과 외부 장치 사이에 연결되는 메인 콘택터,상기 메인 콘택터와 연결되는 프리차지 콘택터,상기 메인 콘택터에 공급되는 작동전압을 측정하는 전압 측정부, 그리고상기 전압 측정부에서 측정된 작동전압의 변화에 기초하여 상기 메인 콘택터의 개방 이벤트를 판단하는 제어부를 포함하고,상기 제어부는,상기 개방 이벤트가 발생하면, 차량이 운행 중인 주행모드에서 상기 작동전압이 상기 메인 콘택터에 인가되도록 제어하는 구동신호의 레벨을 판단하고,상기 구동신호의 레벨이 인에이블(enable) 레벨이면, 상기 프리차지 콘택터를 닫은 후 상기 메인 콘택터를 닫고, 상기 메인 콘택터가 닫힘 상태에서 소정 시간 경과 후 상기 프리차지 콘택터를 개방시키는, 배터리 시스템.
- 제1항에 있어서,상기 제어부는,상기 판단결과 상기 구동신호의 레벨이 디스에이블(disable) 레벨이면, 상기 메인 콘택터가 개방 상태를 유지하도록 제어하는, 배터리 시스템.
- 제1항에 있어서,상기 제어부는,상기 메인 콘택터에 공급되던 작동전압이 공급되지 않으면 상기 개방 이벤트가 발생한 것으로 판단하는, 배터리 시스템.
- 제1항에 있어서,상기 제어부는,상기 차량의 속도가 기 설정된 기준속도를 초과하거나,상기 차량의 기어 변속이 후진기어, 중립기어, 또는 드라이브 기어이면 상기 주행모드로 판단하는, 배터리 시스템.
- 제1항에 있어서,상기 제어부로부터 상기 구동신호를 수신하고, 상기 구동신호에 따라 상기 작동전압을 상기 메인 콘택터에 공급하는 구동부를 더 포함하는, 배터리 시스템.
- 제5항에 있어서,상기 제어부는,상기 구동신호를 상기 구동부에 전달하여 상기 메인 콘택터의 개방 또는 닫힘을 제어하는 BMS(Battery Management System)인 것을 특징으로 하는, 배터리 시스템.
- 제1항에 있어서,상기 전압 측정부는,상기 작동전압을 디지털 신호로 변환하여 상기 제어부에 전달하는 ADC(Analog-to-digital converter)인 것을 특징으로 하는, 배터리 시스템.
- 제어부가 배터리 팩과 외부 장치 사이에 연결되는 메인 콘택터와, 상기 메인 콘택터와 연결되는 프리차지 콘택터를 제어하여 상기 메인 콘택터를 관리하는 방법으로서,상기 메인 콘택터가 개방되는 개방 이벤트가 발생하는 단계,상기 개방 이벤트가 발생하면, 차량이 운행 중인 주행모드인지 판단하는 단계,상기 주행모드이면, 상기 작동전압이 상기 메인 콘택터에 인가되도록 제어하는 구동신호의 레벨을 판단하는 단계, 그리고상기 판단결과 구동신호의 레벨이 인에이블(enable) 레벨이면, 상기 프리차지 콘택터를 닫은 후 상기 메인 콘택터를 닫고, 상기 메인 콘택터가 닫힘 상태에서 소정 시간 경과 후 상기 프리차지 콘택터를 개방시키는 단계를 포함하는, 콘택터 관리 방법.
- 제8항에 있어서,상기 차량이 운행 중인 주행모드인지 판단하는 단계는,상기 차량의 속도가 기 설정된 기준속도를 초과하거나, 상기 차량의 기어 변속이 후진기어, 중립기어, 또는 드라이브 기어이면 상기 주행모드로 판단하는, 콘택터 관리 방법.
- 제8항에 있어서,상기 메인 콘택터가 개방되는 개방 이벤트가 발생하는 단계는,상기 메인 콘택터에 공급되는 작동전압을 측정하는 전압 측정부에서 측정된 작동전압의 변화에 기초하여 상기 개방 이벤트의 발생을 판단하는, 콘택터 관리 방법.
- 제8항에 있어서,상기 판단결과 구동신호의 레벨이 디스에이블(disable) 레벨이면, 상기 메인 콘택터가 개방 상태를 유지하도록 제어하는 단계를 더 포함하는, 콘택터 관리 방법.
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| EP21858496.9A EP4029721A4 (en) | 2020-08-20 | 2021-07-30 | CONTACTOR MANAGEMENT METHOD AND BATTERY SYSTEM IMPLEMENTING IT |
| US17/768,889 US11999264B2 (en) | 2020-08-20 | 2021-07-30 | Contactor management method and battery system providing method |
| JP2022518906A JP7401132B2 (ja) | 2020-08-20 | 2021-07-30 | コンタクタ管理方法およびその方法を提供するバッテリシステム |
| CN202180005991.0A CN114585534B (zh) | 2020-08-20 | 2021-07-30 | 接触器管理方法和提供该方法的电池系统 |
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| US20230112801A1 (en) * | 2021-10-13 | 2023-04-13 | Ford Global Technologies, Llc | Systems and methods for predicting charging events and preparing electrified vehicles for charging |
| CN120933119B (zh) * | 2025-10-14 | 2026-01-23 | 深蓝汽车科技有限公司 | 继电器、控制装置、电池包和车辆 |
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| EP4029721A4 (en) | 2023-01-11 |
| JP2022550720A (ja) | 2022-12-05 |
| KR102833786B1 (ko) | 2025-07-11 |
| KR20220023202A (ko) | 2022-03-02 |
| CN114585534A (zh) | 2022-06-03 |
| CN114585534B (zh) | 2024-04-09 |
| JP7401132B2 (ja) | 2023-12-19 |
| US20240025298A1 (en) | 2024-01-25 |
| US11999264B2 (en) | 2024-06-04 |
| EP4029721A1 (en) | 2022-07-20 |
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