WO2023096260A1 - 전기 차량을 위한 차량 진단 디바이스 - Google Patents
전기 차량을 위한 차량 진단 디바이스 Download PDFInfo
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- WO2023096260A1 WO2023096260A1 PCT/KR2022/018129 KR2022018129W WO2023096260A1 WO 2023096260 A1 WO2023096260 A1 WO 2023096260A1 KR 2022018129 W KR2022018129 W KR 2022018129W WO 2023096260 A1 WO2023096260 A1 WO 2023096260A1
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- 230000004044 response Effects 0.000 claims abstract description 36
- 238000012545 processing Methods 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 2
- 238000004891 communication Methods 0.000 description 28
- 238000003745 diagnosis Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 4
- 230000007704 transition Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002618 waking effect Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/008—Registering or indicating the working of vehicles communicating information to a remotely located station
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- H—ELECTRICITY
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- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
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- G—PHYSICS
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- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
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- 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
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- G—PHYSICS
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- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/0808—Diagnosing performance data
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- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40267—Bus for use in transportation systems
- H04L2012/40273—Bus for use in transportation systems the transportation system being a vehicle
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- H—ELECTRICITY
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- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/30—Arrangements in telecontrol or telemetry systems using a wired architecture
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- H—ELECTRICITY
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- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/80—Arrangements in the sub-station, i.e. sensing device
- H04Q2209/88—Providing power supply at the sub-station
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/80—Arrangements in the sub-station, i.e. sensing device
- H04Q2209/88—Providing power supply at the sub-station
- H04Q2209/883—Providing power supply at the sub-station where the sensing device enters an active or inactive mode
Definitions
- the present invention relates to a vehicle diagnostic device for an electric vehicle, and more particularly, is connectable to a D-CAN channel provided in a vehicle network system of the electric vehicle, and is connected to the D-CAN channel inside the electric vehicle.
- An electronic device that collects diagnostic data from at least one of the electronic devices connected to another CAN channel of the
- a vehicle network system of an electric vehicle is designed to support smooth and efficient communication between electronic devices of the electric vehicle, and CAN (Controller Area Network) communication is basically applied.
- CAN communication is a standard message-carrying communication protocol designed to allow microcontrollers or devices to communicate with each other without a host computer in electric vehicles as well as other industrial and medical equipment.
- Electronic devices provided in electric vehicles may be categorized into multiple groups according to their uses.
- the vehicle network system provides a plurality of CAN communication channels (eg, P-CAN, B-CAN, C-CAN, and D-CAN), and among electronic devices located inside and outside of the electric vehicle, a plurality of electronic devices of the same group of the CAN communication channels are connected in parallel through a specific communication channel.
- the vehicle network system outputs a wakeup pattern to one or two or more of a plurality of CAN communication channels according to the state of the electric vehicle. While operating in the sleep mode, the electronic devices switch from the sleep mode to the wakeup mode and operate in response to input of a predetermined wakeup pattern from the electric vehicle through a CAN communication channel to which they are connected.
- a relationship map between various states (eg, ignition on, ignition off, charging) that the electric vehicle can experience and a CAN communication channel to output a wakeup pattern in each state is recorded.
- states eg, ignition on, ignition off, charging
- CAN communication channel to output a wakeup pattern in each state
- the 'start-up On' state may be set so that the wakeup pattern is output to all CAN communication channels
- the 'start-up Off' state may be set such that the wakeup pattern is output only to the B-CAN.
- a communication port for diagnosis also referred to as 'OBD-II', is provided in a predetermined area in a cabin of an electric vehicle, and a D-CAN channel, one of a plurality of CAN communication channels provided in a vehicle network system, is connected to the communication port for diagnosis.
- An electronic device e.g., a diagnostic scanner
- diagnostic equipment for an electric vehicle is detachably provided to a diagnostic communication port through a connector provided therein, transmits a diagnostic request to a vehicle network system while being coupled to the diagnostic communication port, and , collects diagnostic data input from the vehicle network system as a response to the diagnostic request.
- the vehicle network system does not output a wake-up pattern to the D-CAN channel due to the electric vehicle being in a specific state (eg, charging), the electronic device is removed from the sleep mode even if the electronic device is connected to the communication port for diagnosis. There is a problem that the electronic device cannot collect diagnostic data related to the electric vehicle because it cannot be woken up.
- An object of the present invention is to provide an electronic device that collects diagnostic data from an electric vehicle by sensing a bias voltage to generate a wakeup signal and automatically being woken up from a sleep mode by the wakeup signal.
- a vehicle diagnostic device for an electric vehicle includes a connector detachably configured to a D-CAN channel provided in a vehicle network system of the electric vehicle; a CAN transceiver connected to the first signal line and the second signal line of the D-CAN channel through the connector; a wake-up circuit connected to the first signal line or the second signal line through the connector; and switching from the sleep mode to the wake-up mode in response to input of a first wake-up signal output by the CAN transceiver or a second wake-up signal output by the wake-up circuit in the sleep mode, and and a control circuit configured to collect diagnostic data from the vehicle network system through the CAN transceiver in an up mode.
- the CAN transceiver may be configured to output the first wakeup signal to the control circuit in response to a wakeup pattern being input from the D-CAN channel.
- the wakeup circuit may be configured to output the second wakeup signal to the control circuit in response to an input voltage from the first signal line or the second signal line being greater than a reference voltage.
- the wake-up circuit may include a voltage divider configured to generate the reference voltage by dividing a first power voltage from a power circuit provided in the electric vehicle.
- the wake-up circuit may include a comparator configured to output a high level voltage in response to the input voltage being greater than the reference voltage; and a signal transmitting circuit configured to output a power voltage from a power circuit provided in the electric vehicle to the control circuit as the second wake-up signal in response to the high level voltage.
- the signal transmission circuit may include a first transistor including a gate, a source, and a drain connected to an output pin of the comparator; a first resistor connected between the gate of the first transistor and the source of the first transistor; a second resistor connected between the source of the first transistor and ground; a second transistor including a gate, a source connected to the power circuit, and a drain connected to the control circuit; a third resistor connected between the gate of the second transistor and the source of the second transistor; and a fourth resistor connected between the gate of the second transistor and the drain of the first transistor.
- the first transistor may be an N-channel MOSFET.
- the second transistor may be a P-channel MOSFET.
- the control circuit may include a voltage regulator configured to step down the power supply voltage from a power supply circuit provided in the electric vehicle to the other voltage in response to input of the first wakeup signal or the second wakeup signal; and a data processing unit configured to operate in the wakeup mode in response to input of the second power supply voltage from the voltage regulator in the sleep mode.
- the control circuit may be configured to switch from the sleep mode to the wakeup mode in response to input of the first wakeup signal or the second wakeup signal continuing for a predetermined time in the sleep mode.
- the control circuit is switched from the sleep mode to the wakeup mode by the second wakeup signal, and then, in response to no input of the second wakeup signal for a predetermined period of time, the control circuit moves from the wakeup mode to the sleep mode. It can be configured to convert to.
- the bias voltage of the signal line of the D-CAN channel is detected.
- diagnostic data may be collected from the electric vehicle.
- FIG. 1 is a diagram showing an electric vehicle according to the present invention and a vehicle diagnostic device detachably provided from the outside of the electric vehicle to the electric vehicle by way of example.
- FIG. 2 is a diagram schematically illustrating the configuration of the vehicle diagnostic device shown in FIG. 1 .
- FIG. 3 is a timing chart referred to in explaining the operation of the wakeup circuit of FIG. 2 .
- control unit> means a unit that processes at least one function or operation, and may be implemented as hardware, software, or a combination of hardware and software.
- FIG. 1 is a diagram showing an electric vehicle 1 related to the present invention and a vehicle diagnostic device 410 detachably provided from the outside of the electric vehicle 1 to the electric vehicle 1 by way of example.
- an electric vehicle 1 includes a vehicle network system 10 , electronic devices 110 , 210 , and 310 , and a power circuit 20 .
- the vehicle network system 10 includes a P (Powertrain)-CAN channel 100, a B (Body)-CAN channel 200, a C (Chassis)-CAN channel 300, and a D (Diagnostic)-CAN channel 400. ) and the gateway 500.
- P Powertrain
- B Body
- C Chassis
- D Diagnostic
- Each of the electronic devices 110 , 210 , 310 is connected to one of the P-CAN channel 100 , the B-CAN channel 200 , the C-CAN channel 300 and the D-CAN channel 400 . From the viewpoint of the vehicle network system 10 , each of the electronic devices 110 , 210 , 310 , and 410 may be referred to as a 'node'. Two or more electronic devices may be connected in parallel to each of the P-CAN channel 100, the B-CAN channel 200, the C-CAN channel 300, and the D-CAN channel 400.
- the power circuit 20 is configured to supply a power voltage V CC required for operation of the vehicle network system 10 and the electronic devices 110 , 210 , and 310 .
- the power circuit 20 may include a battery (eg, a lead acid battery) and a voltage regulator that converts an output voltage of the battery into a power supply voltage (V CC ) of a predetermined constant voltage value (eg, 12 [V]).
- V CC power supply voltage
- a predetermined constant voltage value eg, 12 [V]
- the P-CAN channel 100 is provided for communication with electronic devices 110 related to driving functions of the electric vehicle 1, such as an engine, a steering wheel, an electric motor, and an electronic pedal.
- the B-CAN channel 200 communicates with electronic devices 210 unrelated to the driving function of the electric vehicle 1, such as smart key modules, lights, electronic doors, sunroofs, wipers, airbags, air conditioners, power windows, and the like. provided for communication.
- electronic devices 210 unrelated to the driving function of the electric vehicle 1, such as smart key modules, lights, electronic doors, sunroofs, wipers, airbags, air conditioners, power windows, and the like. provided for communication.
- the C-CAN channel 300 is provided for communication with electronic devices 310 that are in charge of functions related to the chassis of the electric vehicle 1, such as a cluster, a yaw rate sensor (YRS), etc. It can support high communication speed compared to
- the vehicle diagnostic device 410 positioned outside the electric vehicle 1 is configured to transmit information to at least one of the electronic devices 110, 210, and 310 positioned inside the electric vehicle 1. It is used to transmit a diagnostic request and transmit/receive diagnostic data output from the electronic devices 110, 210, and 310 as a response to the diagnostic request.
- the vehicle diagnosis device 410 is referred to as a 'vehicle diagnosis device'.
- the gateway 500 as a central component of the vehicle network system 10, transmits messages between the P-CAN channel 100, the B-CAN channel 200, the C-CAN channel 300, and the D-CAN channel 400. It is in charge of the functions of exchange, communication path setting, and communication speed control.
- the gateway 500 relays communication from any one of the P-CAN channel 100, the B-CAN channel 200, the C-CAN channel 300 and the D-CAN channel 400 to at least one of the others. .
- the gateway 500 enters the electric vehicle 1 related to the received diagnostic request.
- the electronic device 110 , 210 , 310 is identified, and a corresponding diagnosis request is input to the CAN channel 100 , 200 , 300 connected to the identified electronic device 110 , 210 , 310 . Then, the identified electronic devices 110, 210, and 310 receive a diagnosis request through the CAN channel 100, 200, and 300 to which they are connected, and access the diagnostic data of the content requested in the received diagnosis request. returned to the selected CAN channel (100, 200, 300). The returned diagnostic data is input to the vehicle diagnostic device 410 through the D-CAN channel 400 via the gateway 500 . The diagnostic data indicates the state of at least one component specified by the diagnosis request among a plurality of components mounted on the electric vehicle 1 .
- a diagnosis request for inquiring about the SOH (State Of Health) of a battery pack of the electric vehicle 1 is connected to the P-CAN channel 100 or the C-CAN channel 300 through the gateway 500. It is transmitted to a battery management system (BMS), which is one of the electronic devices 110 and 310 .
- BMS battery management system
- the BMS executes the calculation function of the SOH of the battery pack in response to the diagnosis request, and then transmits a message indicating the calculated SOH to the gateway 500 as diagnosis data.
- the gateway 500 is connected to the power circuit 20 and the ground (eg, chassis), respectively, and transmits the power voltage (V CC ) input from the power circuit 20 to the P-CAN channel 100 and the B-CAN channel.
- V CC power voltage
- 200, the C-CAN channel 300 and the D-CAN channel 400 are provided between the power pin (P) and the ground pin (G), respectively.
- each CAN channel is a bundle of four electrical lines: a first signal line (CAN-H line, H), a second signal line (CAN-L line, L), a power line (P) and a ground line (G) am.
- the first signal line (H) and the second signal line (L) are used for communication of the vehicle diagnostic device 410, and a pair of the first signal line (H) and the second signal line (L) is 'CAN- You can call it 'bus'.
- the ground line provides ground voltage (potential of the chassis) of the electric vehicle 1 .
- the power line P is connected to an output terminal of the power circuit 20 to provide a power voltage V CC .
- the power supply voltage (V CC ) is used for driving the electronic devices 110, 210, 310, and 410.
- the first signal line (H) is marked with 'CAN-H', 'CAN-high' or 'CAN+', and the twelfth signal line is 'CAN-L', 'CAN- low' or 'CAN-'.
- the gateway 500 in response to the electric vehicle 1 being in the first state (eg, starting on), the P-CAN channel 100, the B-CAN channel 200, the C-CAN channel 300, and A predetermined wakeup pattern may be output through the first signal line H and the second signal line L of both the D-CAN channel 400 .
- the wakeup pattern may be based on ISO 11898-2.
- the gateway 500 in response to the electric vehicle 1 being in the second state (eg, ignition off), the P-CAN channel 100, the B-CAN channel 200, the C-CAN channel 300, and It is possible to stop the output of a certain wake-up pattern to the CAN-bus of all D-CAN channels 400 .
- the second state eg, ignition off
- the gateway 500 in response to the electric vehicle 1 being in the third state (eg, starting preparation, charging), the P-CAN channel 100, the B-CAN channel 200 and the C-CAN channel 300 ) Stops the output of a predetermined wake-up pattern to the first signal line (H) and the second signal line (L) of at least one CAN channel of the CAN channel, and instead the first signal line (H) and A bias voltage of a predetermined constant voltage value (eg, 2.5V) may be output to at least one of the second signal lines (L).
- the starting preparation state is determined by the smart key module, which is one of the electronic devices 210 connected to the B-CAN channel 200, detecting that the smart key has approached within a certain distance from the electric vehicle 1.
- the start-on state of (1) can be said to be a state of preparation.
- the gateway 500 applies a predetermined constant voltage to at least one of the first signal line H and the second signal line L of the D-CAN channel 400 in response to the electric vehicle 1 being in the third state.
- a bias voltage of the value can be output.
- the gateway 500 outputs a predetermined wakeup pattern to at least one of the P-CAN channel 100, the B-CAN channel 200, and the C-CAN channel 300
- the D-CAN channel 400 A bias voltage of a predetermined constant voltage value may be output to at least one of the first signal line (H) and the second signal line (L).
- FIG. 2 is a diagram schematically illustrating the configuration of the vehicle diagnostic device 410 shown in FIG. 1 .
- the vehicle diagnostic device 410 includes a connector 411 , a CAN transceiver 412 , a wake-up circuit 413 and a control circuit 414 .
- the connector 411 is configured to be detachable to 4-pins (H, L, P, G) of the D-CAN channel 400 provided in the vehicle network system 10 of the electric vehicle 1.
- Each of the CAN transceiver 412, wakeup circuit 413 and control circuit 414 is connected to at least one of 4-pins (H, L, P, G) through a connector 411.
- CAN transceiver 412 is connected to the first signal line (H) and the second signal line (L) through the connector 411, the voltage difference between the first signal line (H) and the second signal line (L)
- a first wakeup signal is output from the wakeup pin (I) in response to the change of ⁇ matching a predetermined wakeup pattern.
- the wakeup pin (WU) of the control circuit 414 is connected to the wakeup pin (I) of the CAN transceiver 412 .
- the control circuit 414 converts the sleep mode into the wakeup mode in response to input of the first wakeup signal to the wakeup pin WU in the sleep mode.
- the control circuit 414 after waking up, can communicate with the electric vehicle 1 using the CAN transceiver 412.
- the signal output pin (T X ) of the control circuit 414 is connected to the signal input pin (R X ) of the CAN transceiver 412, and the signal input pin (R X ) of the control circuit 414 is connected to the CAN transceiver 412. It is connected to the signal output pin (T X ) of The CAN transceiver 412 transmits the message received through the first signal line H and the second signal line L to the signal of the control circuit 414 through the signal output pin T X of the CAN transceiver 412. It is delivered to the input pin (R X ).
- the CAN transceiver 412 receives a message output from the signal output pin (T X ) of the control circuit 414 through the signal input pin (R X ) of the CAN transceiver 412, and transmits the received message to a first signal. It is transferred to the gate way 500 through the line H and the second signal line L.
- the wakeup circuit 413 is configured to wake up the control circuit 414 independently of the wake up function of the CAN transceiver 412 relative to the control circuit 414 . Specifically, while the wake-up circuit 413 cannot output the first wake-up signal to the control circuit 414 because the wake-up pattern is not input through the D-CAN channel 400, the CAN transceiver 412 cannot output the first wake-up signal to the control circuit 414. In response to the voltage of the first signal line (H) or the second signal line (L) of the D-CAN channel 400 being greater than the reference voltage (V ref ), the second wake-up signal is configured to be output. The output pin of the wake-up circuit 413 is connected to the wake-up pin WU of the control circuit 414 . The control circuit 414 converts the sleep mode into the wakeup mode in response to input of the second wakeup signal to the wakeup pin WU in the sleep mode.
- Each of the first wakeup signal and the second wakeup signal may refer to a high level voltage equal to or greater than a predetermined voltage value.
- the wake-up circuit 413 includes a comparator 431 and a signal transfer circuit 432 and may further include a voltage divider 433 .
- the comparator 431 includes an input pin (+), an input pin (-), and an output pin.
- the voltage of the first signal line (H) is input to the input pin (+) through the connector 411 .
- 2 illustrates that the first signal line (H) is connected to the input pin (+).
- a reference voltage (V ref ) higher than a predetermined voltage value (eg, 2V) is input to the input pin (-).
- the reference voltage (V ref ) is less than the bias voltage output to the first signal line (H).
- the comparator 431 outputs a high level voltage of a predetermined voltage value from the output pin in response to the input voltage of the input pin (+) being greater than the input voltage (V ref ) of the input pin ( ⁇ ).
- the comparator 431 may operate using the power supply voltage (V CC ).
- the high level voltage output from the output pin of the comparator 431 may be equal to the power voltage V CC .
- the comparator 431 outputs a low-level voltage of a predetermined voltage value (eg, 0 [V]) from the output pin in response to the input voltage of the input pin (+) being smaller than the input voltage of the input pin (-). do.
- the low level voltage output from the output pin of the comparator 431 may be the same as the ground voltage.
- the signal transfer circuit 432 includes a first resistor R 1 , a second resistor R 2 , a first transistor T 1 , a third resistor R 3 , a fourth resistor R 4 , It is illustrated as including a second transistor (T 1 ).
- the gate of the first transistor T 1 is connected to the output pin of the comparator 431 .
- the first resistor R 1 is connected between the gate of the first transistor T 1 and the source of the first transistor T 1 .
- the second resistor R 2 is connected between the source of the first transistor T 1 and the ground.
- a source of the second transistor T 2 is connected to the power line P.
- the drain of the second transistor T 2 is connected to the wakeup pin WU of the control circuit 414 .
- the third resistor R 3 is connected between the gate of the second transistor T 2 and the source of the second transistor T 2 .
- the fourth resistor R 4 is connected between the gate of the second transistor T 2 and the drain of the first transistor T 1 .
- the first transistor T 1 may be an N-channel MOSFET.
- the second transistor T 2 may be a P-channel MOSFET. While a high level voltage is output from the output pin of the comparator 431, the first transistor T 1 is turned on. While the first transistor T 1 is in an on state, current flows through the third resistor R 3 , the fourth resistor R 4 , the first transistor T 1 , and the second resistor R 2 ; Accordingly, the voltage across the third resistor R 3 is input as the gate-source voltage of the second transistor T 2 , and the second transistor T 2 is turned on. While the second transistor T 2 is in an on state, the power supply voltage V CC is input as a second wake-up signal to the wake-up pin WU of the control circuit 414 .
- the voltage divider 433 includes a resistor R A and a resistor R B .
- the reference voltage (V ref ) is illustrated as being provided from the power supply voltage (V CC ), but the output voltage of a storage battery such as a coin cell may be used as the reference voltage (V ref ).
- the control circuit 414 may be configured to switch from the sleep mode to the wakeup mode in response to input of the first wakeup signal or the second wakeup signal continuing for a predetermined time in the sleep mode.
- the control circuit 414 includes a voltage regulator 441 and a data processing unit 442 .
- the voltage regulator 441 responds to the input of the first wakeup signal or the second wakeup signal to the wakeup pin WU, and the power supply voltage V input to the power supply pin P of the control circuit 414. CC ) to another voltage (eg 5 [V]).
- the data processing unit 442 is powered by receiving the voltage generated by the voltage regulator 441 from the power supply voltage V CC , and operates by switching from a sleep mode to a wakeup mode.
- the data processing unit 44 in terms of hardware, includes application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), It may be implemented using at least one of microprocessors and electrical units for performing other functions.
- ASICs application specific integrated circuits
- DSPs digital signal processors
- DSPDs digital signal processing devices
- PLDs programmable logic devices
- FPGAs field programmable gate arrays
- the control circuit 414 may switch from the sleep mode to the wake-up mode by the first wake-up signal, and then switch from the wake-up mode to the sleep mode in response to no input of the first wake-up signal for a predetermined period of time. There is. Of course, even if the first wakeup signal is not input for a predetermined period of time, if the second wakeup signal is being input, the control circuit 414 can maintain the wakeup state.
- the control circuit 414 may switch from the sleep mode to the wake-up mode by the second wake-up signal, and then switch from the wake-up mode to the sleep mode in response to no input of the second wake-up signal for a predetermined period of time. There is. Of course, even if the second wake-up signal is not input for a predetermined period of time, if the first wake-up signal is being input, the control circuit 414 can maintain the wake-up state.
- FIG. 3 is a timing chart referred to for explaining the operation of the wake-up circuit 413 of FIG. 2 .
- a state in which each of the first signal line (H) and the second signal line (L) is a bias voltage may be referred to as a 'recessive state'.
- the voltage (eg, 3.5 to 5 V) of the first signal line (H) is higher than the bias voltage and the voltage (eg, 0 to 1.5 V) of the second signal line (L) is lower than the bias voltage.
- 'dominant state' In the dominant state, a voltage difference between the first signal line H and the second signal line L may be about 2 to 5 V.
- the D-CAN channel 400 as well as the P-CAN channel 100, B as the electric vehicle 1 is in the second state.
- the -CAN channel 200 and the C-CAN channel 300 are also deactivated, that is, the voltage of the first signal line (H) and the second signal line (L) is 0 V.
- the first signal line H and the second signal line L of the D-CAN channel 400 generate a reference voltage V ref It transitions to the larger recessive state of 2.5 V and is maintained until the time point t 2 .
- the control circuit 414 switches from the sleep mode to the wakeup mode at the time point t 2 .
- the control circuit 414 may collect diagnostic data by communicating with the electric vehicle 1 using the CAN transceiver 412 while operating in a wakeup mode during a period from time t 2 to time t 3 .
- the wake-up circuit ( 413) stops outputting the second wake-up signal.
- the 1.2 V recessive state lasts for several seconds to several minutes from when the electric vehicle 1 switches from the third state to the second state, and then transitions to the 0 V recessive state at time t 4 .
- the recessive state of 1.2 V depends on the voltage difference between the electric vehicle 1 and the CAN buses H and L of the D-CAN channel 400 .
- the control circuit 414 responds to the first signal line (H) and the second signal line (L) being maintained in a recessive state lower than the reference voltage (V ref ) for a predetermined time or longer during operation in the wake-up mode, It switches back to sleep mode from wake-up mode.
- connector 411 connector 412: CAN transceiver
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Abstract
Description
Claims (10)
- 전기 차량을 위한 차량 진단 디바이스에 있어서,상기 전기 차량의 차량 네트워크 시스템에 마련된 D-CAN 채널에 탈착 가능하게 구성되는 커넥터;상기 커넥터를 통해 상기 D-CAN 채널의 제1 신호 라인 및 제2 신호 라인에 접속되는 CAN 트랜시버;상기 커넥터를 통해 상기 제1 신호 라인 또는 상기 제2 신호 라인에 접속되는 웨이크업 회로; 및슬립 모드에서 상기 CAN 트랜시버에 의해 출력되는 제1 웨이크업 신호 또는 상기 웨이크업 회로에 의해 출력되는 제2 웨이크업 신호가 입력된 것에 응답하여, 상기 슬립 모드에서 웨이크업 모드로 전환하고, 상기 웨이크업 모드에서 상기 CAN 트랜시버를 통해 상기 차량 네트워크 시스템으로부터 진단 데이터를 수집하도록 구성되는 제어 회로를 포함하는 차량 진단 디바이스.
- 제1항에 있어서,상기 CAN 트랜시버는,상기 D-CAN 채널로부터 웨이크업 패턴이 입력된 것에 응답하여, 상기 제1 웨이크업 신호를 상기 제어 회로에게 출력하도록 구성되는 차량 진단 디바이스.
- 제1항에 있어서,상기 웨이크업 회로는,상기 제1 신호 라인 또는 상기 제2 신호 라인으로부터의 입력 전압이 기준 전압보다 큰 것에 응답하여, 상기 제2 웨이크업 신호를 상기 제어 회로에게 출력하도록 구성되는 차량 진단 디바이스.
- 제3항에 있어서,상기 웨이크업 회로는,상기 전기 차량에 마련된 전원 회로로부터의 제1 전원 전압을 분압하여 상기 기준 전압을 생성하도록 구성되는 전압 디바이더를 포함하는 차량 진단 디바이스.
- 제3항에 있어서,상기 웨이크업 회로는,상기 입력 전압이 상기 기준 전압보다 큰 것에 응답하여, 하이 레벨 전압을 출력하도록 구성되는 비교기; 및상기 하이 레벨 전압에 응답하여, 상기 전기 차량에 마련된 전원 회로로부터의 전원 전압을 상기 제2 웨이크업 신호로서 상기 제어 회로에게 출력하도록 구성되는 신호 전달 회로를 포함하는 차량 진단 디바이스.
- 제5항에 있어서,상기 신호 전달 회로는,상기 비교기의 출력핀에 접속된 게이트, 소스 및 드레인을 포함하는 제1 트랜지스터;상기 제1 트랜지스터의 게이트와 상기 제1 트랜지스터의 소스 간에 접속되는 제1 저항;상기 제1 트랜지스터의 소스와 접지 간에 접속되는 제2 저항;게이트, 상기 전원 회로에 접속되는 소스 및 상기 제어 회로에 접속되는 드레인을 포함하는 제2 트랜지스터;상기 제2 트랜지스터의 게이트와 상기 제2 트랜지스터의 소스 간에 접속되는 제3 저항; 및상기 제2 트랜지스터의 게이트와 상기 제1 트랜지스터의 드레인 간에 접속되는 제4 저항을 포함하는 차량 진단 디바이스.
- 제6항에 있어서,상기 제1 트랜지스터는 N-채널 MOSFET이고,상기 제2 트랜지스터는 P-채널 MOSFET인 차량 진단 디바이스.
- 제1항에 있어서,상기 제어 회로는,상기 제1 웨이크업 신호 또는 상기 제2 웨이크업 신호가 입력된 것에 응답하여, 상기 전기 차량에 마련된 전원 회로로부터의 상기 전원 전압을 상기 다른 전압으로 강압하도록 구성되는 전압 레귤레이터; 및상기 슬립 모드에서 상기 전압 레귤레이터로부터 상기 제2 전원 전압이 입력되는 것에 응답하여, 상기 웨이크업 모드로 동작하도록 구성되는 데이터 처리 유닛을 포함하는 차량 진단 디바이스.
- 제1항에 있어서,상기 제어 회로는,상기 슬립 모드에서 상기 제1 웨이크업 신호 또는 상기 제2 웨이크업 신호의 입력이 일정 시간 지속된 것에 응답하여, 상기 슬립 모드에서 웨이크업 모드로 전환하도록 구성되는 차량 진단 디바이스.
- 제1항에 있어서,상기 제어 회로는,상기 제2 웨이크업 신호에 의해 상기 슬립 모드로부터 상기 웨이크업 모드로 전환된 다음, 상기 제2 웨이크업 신호가 일정 시간 동안 미입력되는 것에 응답하여, 상기 웨이크업 모드로부터 상기 슬립 모드로 전환하도록 구성되는 차량 진단 디바이스.
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JP2023541879A JP2024506799A (ja) | 2021-11-23 | 2022-11-16 | 電気車両のための車両診断デバイス |
EP22898942.2A EP4307256A1 (en) | 2021-11-23 | 2022-11-16 | Vehicle diagnostic device for electric vehicle |
US18/274,421 US20240089146A1 (en) | 2021-11-23 | 2022-11-16 | Vehicle diagnostic device for electric vehicle |
CN202280011119.1A CN116745823A (zh) | 2021-11-23 | 2022-11-16 | 用于电动车辆的车辆诊断装置 |
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KR10-2021-0162803 | 2021-11-23 | ||
KR1020210162803A KR20230076011A (ko) | 2021-11-23 | 2021-11-23 | 전기 차량을 위한 차량 진단 디바이스 |
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KR101553396B1 (ko) * | 2014-04-10 | 2015-09-15 | 주식회사 오토산업 | 차량 배터리 전원 공급 제어 장치 |
JP2015199444A (ja) * | 2014-04-09 | 2015-11-12 | 株式会社デンソー | 電子制御装置 |
KR20190012674A (ko) * | 2017-07-28 | 2019-02-11 | 현대자동차주식회사 | 차량 상태 모니터링 시스템 및 차량 |
KR20190051477A (ko) * | 2017-11-07 | 2019-05-15 | 주식회사 엘지화학 | Bms 웨이크업 장치, 이를 포함하는 bms 및 배터리팩 |
KR20200119729A (ko) * | 2019-04-08 | 2020-10-20 | 삼성에스디아이 주식회사 | 전지 시스템을 위한 제어 전자 장치, 전지 시스템을 위한 제어 전자 장치의 전력 공급 방법, 전지 시스템 및 차량 |
-
2021
- 2021-11-23 KR KR1020210162803A patent/KR20230076011A/ko unknown
-
2022
- 2022-11-16 WO PCT/KR2022/018129 patent/WO2023096260A1/ko active Application Filing
- 2022-11-16 US US18/274,421 patent/US20240089146A1/en active Pending
- 2022-11-16 CN CN202280011119.1A patent/CN116745823A/zh active Pending
- 2022-11-16 EP EP22898942.2A patent/EP4307256A1/en active Pending
- 2022-11-16 JP JP2023541879A patent/JP2024506799A/ja active Pending
Patent Citations (5)
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JP2015199444A (ja) * | 2014-04-09 | 2015-11-12 | 株式会社デンソー | 電子制御装置 |
KR101553396B1 (ko) * | 2014-04-10 | 2015-09-15 | 주식회사 오토산업 | 차량 배터리 전원 공급 제어 장치 |
KR20190012674A (ko) * | 2017-07-28 | 2019-02-11 | 현대자동차주식회사 | 차량 상태 모니터링 시스템 및 차량 |
KR20190051477A (ko) * | 2017-11-07 | 2019-05-15 | 주식회사 엘지화학 | Bms 웨이크업 장치, 이를 포함하는 bms 및 배터리팩 |
KR20200119729A (ko) * | 2019-04-08 | 2020-10-20 | 삼성에스디아이 주식회사 | 전지 시스템을 위한 제어 전자 장치, 전지 시스템을 위한 제어 전자 장치의 전력 공급 방법, 전지 시스템 및 차량 |
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US20240089146A1 (en) | 2024-03-14 |
EP4307256A1 (en) | 2024-01-17 |
JP2024506799A (ja) | 2024-02-15 |
KR20230076011A (ko) | 2023-05-31 |
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