WO2021221220A1 - Appareil de commande de batterie et procédé associé - Google Patents

Appareil de commande de batterie et procédé associé Download PDF

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Publication number
WO2021221220A1
WO2021221220A1 PCT/KR2020/006002 KR2020006002W WO2021221220A1 WO 2021221220 A1 WO2021221220 A1 WO 2021221220A1 KR 2020006002 W KR2020006002 W KR 2020006002W WO 2021221220 A1 WO2021221220 A1 WO 2021221220A1
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Prior art keywords
signal
epo
battery
control unit
contactor
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PCT/KR2020/006002
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English (en)
Korean (ko)
Inventor
강정수
남상현
김민철
Original Assignee
에너테크인터내셔널 주식회사
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Publication of WO2021221220A1 publication Critical patent/WO2021221220A1/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
    • B60L53/10—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
    • B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
    • 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
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
    • 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
    • B60L53/30—Constructional details of charging stations
    • 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
    • B60L53/30—Constructional details of charging stations
    • B60L53/305—Communication interfaces
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G01R19/16576—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing DC or AC voltage with one threshold
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/005—Testing of electric installations on transport means
    • G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
    • 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
    • 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
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • 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
    • 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
    • Y02T90/12—Electric charging stations
    • 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
    • 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
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Definitions

  • the present invention relates to a battery control device and a method therefor, and more particularly, when an EPO (Emergency Power OFF) signal is abnormally detected in the operation of the battery, the operation of the contactor of the battery is stopped by a circuit switching operation (OFF) ), it relates to a battery control device and method using an EPO signal that allows to control the operation of a battery without a specific control signal by a microcontroller.
  • EPO Electronic Power OFF
  • BMS battery management system
  • the BMS is a device that plays an important role in battery management, such as predicting battery replacement timing and detecting battery problems in advance by monitoring the voltage, current, and temperature of the battery pack and maintaining it in an optimal state.
  • an object of the present invention is to use an EPO (Emergency Power OFF) signal provided by a vehicle control unit (ECU) in operating an electric vehicle system. , to check whether the connector and wiring connections between the vehicle and the battery are normal.
  • EPO Emergency Power OFF
  • the present invention aims to implement a H/W switching operation sequence capable of forcibly stopping the battery without a control signal from the microcontroller of the BMS by using the EPO signal when an emergency situation occurs during battery startup.
  • an object of the present invention is to implement stable battery operation by allowing the BMS to identify a problem through the EPO signal and provide information to the vehicle through CAN communication.
  • a battery control device for solving the above technical problem is a vehicle control unit that generates and supplies an EPO (Emergency Power OFF) signal having a predetermined voltage, and receives the EPO signal supplied from the vehicle control unit to receive the battery pack Detects the voltage value of the PDU (Power Distribution Unit) transmitted to the PDU and the EPO signal transmitted from the PDU, and when it is detected as an error value, stops the operation of the battery only by the switching operation of the circuit, and transmits the detection information of the EPO signal to the vehicle It may include a battery pack provided to the control unit.
  • EPO Electronic Power OFF
  • the EPO signal of the present invention may be a signal maintained at a constant voltage of any one of a voltage of 24V or 12V.
  • the error value of the EPO signal of the present invention may be a voltage value sensed as 0V (OFF) or a difference between the sensed voltage and the given constant voltage by more than a certain range.
  • the battery pack of the present invention detects an EPO signal transmitted through a battery contactor for switching battery driving according to a provided contactor control signal and an EPO signal line, and receives a contactor control signal provided to the battery contactor. It may include a BMS that controls to shut off or feed.
  • the BMS of the present invention detects the EPO signal, and when the EPO signal detection unit that transmits the EPO detection signal to the contactor control unit and the BMS control unit, and the EPO detection signal received from the EPO signal detection unit is a normal voltage, normal (ON) When the EPO signal received from the EPO signal detection unit is input as an error value, the switching state is maintained, and a contactor control signal for driving the battery contactor is formed to form an OFF switching state.
  • a contactor control unit that normally supplies or cuts off the battery contactor, receives an EPO detection signal transmitted through the EPO signal detection unit, and a contactor control signal ( battery contactor control) and may include a BMS control unit that is provided to the contactor control unit.
  • the EPO signal of the present invention is transmitted from a connector connected to the vehicle control unit through a connector connected to the PDU, and through a wiring connection circuit of a battery connection terminal connected in the battery pack, and may be a signal detected by the EPO signal detection unit. .
  • the BMS of the present invention may further include a CAN communication unit for providing information generated according to the EPO signal transmitted from the BMS control unit through the EPO signal detection unit to the vehicle control unit through a CAN communication line.
  • the EPO signal line is generated from the vehicle control unit (ECU) and supplied through a connector connected to the PDU (Power Distribution Unit), and the EPO signal detected by being connected to the vehicle control unit (ECU).
  • An error by detecting the voltage value of the EPO signal through a CAN communication line for transmitting the generated detection information, a battery contactor for switching battery operation according to a provided battery contactor control, and the EPO signal line
  • the battery contactor control signal (battery contactor control) for driving the battery contactor is blocked only by a switching operation of the circuit, and may include a BMS that provides detection information of the EPO signal to the vehicle controller.
  • the EPO signal line of the present invention may be a signal line transmitted through a wiring connection circuit of a battery connection terminal connected within the battery pack.
  • the BMS of the present invention senses the voltage value of the EPO signal input through the EPO signal line, and the EPO signal detection unit that transmits the detection signal to the contactor control unit and the BMS control unit, and the EPO signal received from the EPO signal detection unit. If it is a normal voltage, it is maintained in a normal (ON) switching state, and when the EPO signal received from the EPO signal detection unit is input as an error value, a blocking (OFF) switching state is formed, so that the contactor for driving the battery contactor A contactor control unit that normally supplies or blocks a control signal to the battery contactor, receives an EPO detection signal transmitted through the EPO signal detection unit, and a contactor control signal for driving the battery contactor. control) and may include a BMS control unit that is provided to the contactor control unit.
  • the BMS of the present invention may further include a CAN communication unit configured to provide the BMS control unit with information generated according to the EPO signal transmitted through the EPO signal sensing unit to the vehicle control unit through a CAN communication line.
  • a CAN communication unit configured to provide the BMS control unit with information generated according to the EPO signal transmitted through the EPO signal sensing unit to the vehicle control unit through a CAN communication line.
  • the battery control method the step of transmitting an EPO (Emergency Power OFF) signal having a constant voltage from the vehicle control unit to the battery pack through the EPO signal line, the EPO signal sensing unit of the battery pack
  • EPO Electronic Power OFF
  • the EPO signal of the present invention is a voltage value maintained at a constant voltage of either 24V or 12V, and the error value means that the voltage sensed by the EPO signal sensing unit differs from the given constant voltage by more than a certain range or Alternatively, it may be a voltage value sensed as 0V (OFF).
  • the EPO signal line of the present invention is detected by the EPO signal detection unit through a wiring connection circuit of a battery connection terminal connected within the battery pack through a connector connected to a PDU (Power Distribution Unit) from a connector connected to the vehicle control unit. It may be a signal line formed.
  • PDU Power Distribution Unit
  • the contactor control unit In the step of controlling the ON/OFF driving of the battery contactor of the present invention, when the EPO detection signal received from the EPO signal detection unit is a given constant voltage, the contactor control unit is set to a normal (ON) switching state.
  • the response message according to the EPO signal of the present invention is a message confirming that the EPO signal is normal when the EPO detection signal is a given constant voltage, and when the EPO detection signal is detected as an error value, one or more connectors and wiring connections This may be a message reporting an incomplete contact.
  • the BMS in the battery pack receives the EPO (Emergency Power OFF) signal through the EPO signal line provided from the vehicle control unit, and solves the problem of wiring and connectors before driving the battery.
  • EPO Emergency Power OFF
  • the microcontroller when using the EPO signal of the present invention, when a situation occurs that the battery cannot be turned off through key-off and CAN communication, if either one of the PDU connector or the ECU connector is removed immediately, the microcontroller There is an advantage that the battery can be immediately stopped (OFF) without a control signal.
  • FIG. 1 is an exemplary diagram illustrating a block configuration of a battery control device using an EPO signal for operation of a battery in an electric vehicle according to the present invention.
  • FIG. 2 is a flowchart of a battery control method using an EPO signal according to the present invention.
  • FIG. 3 is a flowchart illustrating a step of controlling the driving of a battery contactor in the battery control method of FIG. 2 according to the present invention.
  • FIG. 1 is an exemplary diagram illustrating a block configuration of a battery control device using an EPO signal for operation of a battery in an electric vehicle according to the present invention.
  • the present invention is a device configured for battery control using an EPO signal in an electric vehicle (EV) system, and includes a vehicle control unit (ECU) 100 and a power distribution unit (PDU) 200 . and a battery pack 300 , the battery pack 300 may include a battery contactor 310 and a Battery Management System (BMS) 320 .
  • ECU vehicle control unit
  • PDU power distribution unit
  • BMS Battery Management System
  • the BMS 320 may include an EPO signal detection unit 321 , a contactor control unit 322 , a CAN communication unit 323 , and a BMS control unit 324 .
  • the vehicle controller 100 is an electronic control device that controls various devices (devices) inside the vehicle, and may be referred to as an Electronic Control Unit (ECU).
  • ECU Electronic Control Unit
  • the vehicle control unit 100 uses the CAN protocol together with a line for transmitting a signal such as power for driving the BMS 320 and EPO (Emergency Power OFF), and the BMS 320 and battery driving and battery status, warning , and has the configuration of a CAN communication line for sending or receiving messages for checking errors, etc.
  • a signal such as power for driving the BMS 320 and EPO (Emergency Power OFF)
  • EPO Emergency Power OFF
  • the BMS 320 controls the battery connector 310 in the battery pack 300 according to various signals and message commands by the vehicle controller 100, so that the actual battery Efficient charging/discharging can be made, and operation and maintenance of the battery are performed.
  • the vehicle control unit 100 connects the CAN communication line for transmitting and receiving messages with the BMS 320 and the EPO signal line for transmitting the EPO signal to the PDU 200 ECU connector 101.
  • the PDU (Power Distribution Unit) 200 is a device for distributing power in the EV system, and is connected to the DC Link 110 through a PDU line, and a high voltage cable (HV+, HV- Cable) passing through the DC Link 110 . ) to supply power from the external charging system (Charger) to the battery through the battery contactor 310, or to transmit power from the battery through the battery contactor 310 to be used as power in the EV system. do.
  • the DC Link 110 may be referred to as a device for maintaining a constant voltage to be supplied during power conversion through a converter/inverter.
  • the PDU 200 is a PDU line connected to the DC Link 110 and a high-voltage connector connecting the EPO signal line to the BMS 320 to transmit the EPO signal transmitted to the vehicle control unit 100 to the PDU.
  • a connector 201 is provided.
  • the battery pack 300 includes a battery module (not shown) in which a plurality of batteries are combined in series or in parallel, and consists of a battery contactor 310 and a BMS (Battery Management System) 320 for switching battery operation. , may include a plurality of components not shown in addition to.
  • a battery module (not shown) in which a plurality of batteries are combined in series or in parallel, and consists of a battery contactor 310 and a BMS (Battery Management System) 320 for switching battery operation.
  • BMS Battery Management System
  • the battery contactor 310 is connected to the contactor control unit 322 of the BMS 320, and is a relay device that turns on/off the battery driving according to a battery contactor control signal. It performs a switching function for power transmission through a high voltage cable (HV+, HV- Cable) passing through the Link 110 .
  • HV+, HV- Cable high voltage cable
  • the BMS 320 is a device that plays an important role in battery management, such as monitoring the voltage, current and temperature of the battery and maintaining it in an optimal state, predicting when to replace the battery and detecting battery problems in advance.
  • a BMS control unit 324 which can be called a microcontroller module or a micro-com, on which an embedded control application is mounted.
  • the BMS 320 detects the EPO signal provided from the vehicle control unit 100 and received through the EPO signal line passing through the PDU 200 and transmits it to the BMS control unit 324 or the battery contactor 310. It includes an EPO signal detection unit 321 that is transmitted to the contactor control unit 322 that directly controls it.
  • the EPO (Emergency Power OFF) signal in the present invention is a signal (Signal) that is constantly maintained at any one of a voltage of 24V or 12V from the vehicle control unit 100 .
  • the EPO signal is transmitted from the ECU connector 101 through the PDU connector 201 through the EPO signal line through a wiring connection circuit in the battery pack 300 and is detected by the EPO signal detecting unit 321 .
  • the contactor control unit 322 functions as a switch circuit that transmits a control signal (battery contactor control signal) for controlling the battery contactor 310 through the BMS control unit 324 or the EPO signal detection unit 321. do.
  • the BMS 320 is a response message confirming that the EPO signal is normal, depending on whether there is an abnormality in the EPO signal detected by the BMS control unit 324 through the EPO signal detection unit 321, or a wiring problem or emergency stop. and a CAN communication unit 323 for transmitting message information to the vehicle control unit 100 through the CAN communication line.
  • the EPO signal is provided from the vehicle control unit 100, is maintained at any one of 24V or 12V, and is provided to the PDU connector 201 connected to the PDU 200 through the ECU connector 101, and the battery pack It is transmitted to the EPO signal detection unit 321 in the BMS 320 through the wiring connection in the 300 .
  • the EPO signal is not normally input to the EPO signal detecting unit 321 .
  • the EPO signal When the EPO signal is not normal, it is not recognized as either a voltage of 24V or 12V, which is a voltage supplied as an EPO signal, and the voltage becomes 0V or is different from the supplied voltage by more than a certain range and is detected as an error. When voltage is detected.
  • the EPO signal may not be normally supplied to the EPO signal detection unit 321 .
  • the PDU connector 201 is properly connected, if there is a problem in the wiring connection through which other EPO signals pass, the EPO signal may not be normally supplied to the EPO signal detecting unit 321 .
  • the EPO signal detection unit 321 supplies a normal signal (ON) to the contactor control unit 322 and the contactor control unit 322 is A normal (ON) switching state is maintained.
  • the EPO signal is normally input to the BMS control unit 324, and the BMS control unit 324 returns the contactor control signal for controlling the battery contactor 310 to the contactor control unit 322 as normal ( ON) is supplied according to the switching state so that the battery contactor 310 operates the battery normally.
  • the BMS control unit 324 sends a response message confirming that the EPO signal is normal to the vehicle control unit 100 through the CAN communication unit 323 .
  • the EPO signal voltage may be 0V (OFF) or it may be detected as an error value that is different than a certain range from the normal voltage range. At this time, the EPO signal detecting unit 321 determines that the EPO signal is not normal. judge
  • the EPO signal detection unit 321 supplies a blocking signal OFF to the contactor control unit 322 to implement switching of the OFF state.
  • the contactor control signal (battery contactor control) provided from the BMS control unit 324 is not supplied to the battery contactor 310 .
  • the battery contactor 310 cannot receive the contactor control signal provided to the BMS control unit 324, so that the operation is stopped (OFF).
  • the BMS control unit 324 sends a response message indicating that the EPO signal is not normal due to an incomplete contact of one or more connectors and wiring connections through the CAN communication line of the CAN communication unit 323 to the vehicle control unit 100. do.
  • the EPO signal detecting unit 321 directly This is to immediately stop (OFF) the battery contactor 310 by blocking (OFF) the contactor control signal (battery contactor control) of the contactor control unit (322).
  • the BMS control unit 324 Using the functions of the EPO signal detection unit 321 and the contactor control unit 322, the BMS control unit 324 immediately stops (OFF) the battery contactor 310 by a command through the key-off and CAN communication line. ), when the ECU connector 101 or the PDU connector 201 is arbitrarily removed, the supply of the EPO signal is turned OFF, and thus the contactor control signal to the battery contactor 310 occurs. ) is not supplied, so that the battery contactor 310 can be immediately stopped (OFF).
  • FIG. 2 is a flowchart of a battery control method using an EPO signal according to the present invention
  • FIG. 3 is a flowchart illustrating a step of controlling the operation of the battery contactor in FIG. 2 .
  • the battery control method of the BMS using the EPO signal includes the steps of transmitting the EPO signal to the battery pack (S100), detecting and transmitting the EPO signal (S200), and controlling the operation of the battery contactor (S100). S300) and providing the EPO signal detection information to the vehicle controller (S400).
  • the step S100 of transmitting the EPO signal to the battery pack is a step in which an emergency power OFF (EPO) signal having a predetermined voltage is transmitted from the vehicle control unit (ECU) to the battery pack through the EPO signal line.
  • EPO emergency power OFF
  • an EPO signal maintained at a constant voltage of either 24V or 12V is generated from the vehicle control unit (ECU).
  • the EPO signal is transmitted from a connector connected to the vehicle control unit through a high voltage connector connected to a PDU (Power Distribution Unit), and through an EPO signal line passing through a wiring connection circuit of a battery connection terminal connected within the battery pack, the EPO signal detection unit of the BMS. is transmitted to be detected.
  • PDU Power Distribution Unit
  • the step (S200) of detecting and transmitting the EPO signal is a step of transmitting the EPO signal detected by the EPO signal detecting unit of the BMS to the contactor control unit and the BMS control unit through the EPO signal line.
  • the step of controlling the driving of the battery contactor (S300) is the on/off driving of the battery contactor through a switching operation of the contactor control circuit according to the EPO signal detected by the EPO signal sensing unit. is the step to control.
  • the normal operation of the battery contactor is maintained through the step of normally supplying a battery contactor control signal for driving the battery contactor to the battery contactor (S322), and the battery is operated normally (S323).
  • the contactor control unit is cut off (OFF) in a switching state (S331), by stopping (OFF) the battery contactor through the step (S332) of blocking the supply of the contactor control signal (battery contactor control) for driving the battery contactor to the battery contactor,
  • the battery will stop driving (S333),
  • the step of providing the EPO signal detection information to the vehicle control unit ( S400 ) is a step of providing a confirmation message of the detection information of the EPO signal detected by the EPO signal detection unit from the BMS control unit to the vehicle control unit.
  • the EPO signal is a normal signal having a normal voltage
  • a confirmation message indicating that the wiring connection between the vehicle and the battery is normal is provided to the vehicle controller through the CAN communication line.
  • the EPO signal is a signal measured as an error value rather than a normal voltage
  • a response message indicating that an abnormality has occurred in the EPO signal line and the wiring connection between the vehicle and the battery is not normal is provided to the vehicle controller through the CAN communication line.
  • the present invention continuously detects the EPO signal from the EPO signal detection unit in the BMS when the battery is driven during initial startup or when the connector and wiring are incompletely connected, and a contactor control signal for driving the battery contactor. (battery contactor control) to provide a sequence and a BMS signal processing method capable of immediately stopping (OFF) the operation of the battery by switching to cut off (OFF) the supply to the battery contactor.
  • the present invention immediately stops (OFF) the operation of the battery when the EPO signal in the EPO signal sensing unit is unstable due to contact resistance when the battery is driven in a state where the contact of the battery connector is incomplete, and the EPO signal line Provides a sequence and BMS signal processing method that can prevent heat generation during battery operation by providing a response message that the wiring connection between the vehicle and the battery is not normal to the vehicle control unit through the CAN communication line. will be.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

La présente invention concerne le fonctionnement d'une opération d'une batterie et un appareil de commande de batterie utilisant un signal d'arrêt d'urgence (EPO) et un procédé associé, l'appareil de commande de batterie fournissant les étapes consistant à : transmettre un signal d'EPO ayant une tension constante d'une unité de commande de véhicule électrique à un bloc-batterie par l'intermédiaire d'une ligne de signal d'EPO ; détecter le signal d'EPO par une unité de détection de signal d'EPO du bloc-batterie et transmettre le signal d'EPO détecté à une unité de commande de contacteur et à une unité de commande de BMS ; commander la commande marche/arrêt d'un contacteur de batterie par l'intermédiaire d'une opération de commutation de circuit de l'unité de commande de contacteur, en fonction du signal d'EPO détecté par l'unité de détection de signal d'EPO ; et fournir, de l'unité de commande de BMS à l'unité de commande de véhicule électrique, des informations de détection du signal d'EPO détecté par l'unité de détection de signal d'EPO, ce qui permet de commander l'entraînement d'une batterie même sans signal de commande spécifique par l'intermédiaire de l'unité de commande de BMS par mise hors circuit du contacteur de batterie par l'intermédiaire de l'opération de commutation de circuit lorsque le signal d'EPO est détecté comme étant anormal.
PCT/KR2020/006002 2020-04-28 2020-05-07 Appareil de commande de batterie et procédé associé WO2021221220A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2020-0051694 2020-04-28
KR1020200051694A KR20210133028A (ko) 2020-04-28 2020-04-28 배터리 제어 장치 및 그 방법

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040045747A (ko) * 2002-11-25 2004-06-02 현대자동차주식회사 연료 전지 하이브리드 전기 차량의 파워 라인 연결부제어장치 및 방법
KR20120005729A (ko) * 2010-07-09 2012-01-17 (주)브이이엔에스 전기자동차 및 그 동작방법
KR20120012662A (ko) * 2010-08-02 2012-02-10 (주)브이이엔에스 전기자동차 및 그 비상제어방법
JP2013182477A (ja) * 2012-03-02 2013-09-12 Nsk Ltd マイクロプロセッサ外部監視回路、電子制御装置及び電動パワーステアリング装置
KR20180008224A (ko) * 2016-07-15 2018-01-24 주식회사 엘지화학 실시간 동작 감지를 통한 컨텍터의 비정상 개방 방지 시스템 및 방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040045747A (ko) * 2002-11-25 2004-06-02 현대자동차주식회사 연료 전지 하이브리드 전기 차량의 파워 라인 연결부제어장치 및 방법
KR20120005729A (ko) * 2010-07-09 2012-01-17 (주)브이이엔에스 전기자동차 및 그 동작방법
KR20120012662A (ko) * 2010-08-02 2012-02-10 (주)브이이엔에스 전기자동차 및 그 비상제어방법
JP2013182477A (ja) * 2012-03-02 2013-09-12 Nsk Ltd マイクロプロセッサ外部監視回路、電子制御装置及び電動パワーステアリング装置
KR20180008224A (ko) * 2016-07-15 2018-01-24 주식회사 엘지화학 실시간 동작 감지를 통한 컨텍터의 비정상 개방 방지 시스템 및 방법

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