Power supply control system for electric vehicles and method therefor

Abstract

A power supply control system for an electric vehicle and a method thereof, the power supply control system including a communication device performing wireless communication with an electronic key and a body controller connected with the communication device. The body controller determines a power supply control mode as a factory mode or an electronic key discharge mode based on whether the electronic key is learned and whether a battery of the electronic key is discharged, and controls a vehicle power conversion according to a power conversion logic matching the determined power supply control mode.

Description

[0001] Cross-references to related applications

[0002] This application claims the benefit of priority to Korean Patent Application No. 10-2020-0180236, filed on December 21, 2020, with the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to a power control system and method for electric vehicles. Background Technology

[0004] With the development of information technology (IT), various electronic keys, such as remote keyless entry (FOBs), smart keys, and digital keys, have emerged that enable opening and closing car doors or starting the engine without the use of a mechanical key. Electronic keys can embed unique identification information. When approaching a vehicle, the electronic key can wirelessly transmit the embedded unique identification information to the vehicle's electronic control unit (ECU). The ECU can receive the unique identification information from the electronic key to perform user authentication. When user authentication is successfully performed, the ECU can open and close the doors or start the vehicle according to the user's actions. When using a vehicle employing an electronic key, if user authentication fails or cannot be performed, the doors cannot be opened and closed or the vehicle cannot be started. For example, when sharing a digital key from a vehicle owner to use a vehicle such as a car-sharing service or robotaxi, the vehicle will not be able to perform authentication if it is in factory mode (not yet learned by the smart key) or if the remote key's battery is discharged. Therefore, because user authentication cannot be performed, the digital key cannot control the vehicle. Summary of the Invention

[0005] This disclosure has been made to address the aforementioned problems in the prior art while maintaining the advantages achieved by the prior art.

[0006] One aspect of this disclosure provides a power control system for electric vehicles to facilitate vehicle power switching in situations where user authentication using an electronic key is difficult in vehicles without a starter actuator. Another aspect of this disclosure provides a power control method for electric vehicles.

[0007] The technical problems to be solved by this disclosure are not limited to those described above. Any other technical problems not mentioned herein should be clearly understood by those skilled in the art from the following description.

[0008] According to an aspect of the disclosure, a power supply control system for an electric vehicle can include a communication device performing wireless communication with an electronic key, and a body controller connected with the communication device. The body controller can determine a power supply control mode as a factory mode or an electronic key discharge mode based on whether the electronic key is learned and whether a battery of the electronic key is discharged. The body controller can control a vehicle power transition according to a power transition logic matching the determined power supply control mode.

[0009] The body controller can determine the power supply control mode as the factory mode when the electronic key is not learned. The body controller can determine the power supply control mode as the electronic key discharge mode when the electronic key is learned, when the electronic key is not detected outside the vehicle, and when a door is opened by a mechanical key.

[0010] The body controller can output an emergency start guide pop-up window when the electronic key discharge mode is determined.

[0011] The body controller can verify a door status using a door switch in the electronic key discharge mode to determine whether a driver is seated in the vehicle.

[0012] The body controller can transition a vehicle power state to a vehicle powered state when the electronic key is capable of performing an immobilizer communication and when there is a P-level switch input. The body controller can transition the vehicle power state to an electric vehicle (EV) ready state when there is a brake input in the vehicle powered state.

[0013] The body controller can transition the vehicle power state to a vehicle powered-off state when there is a P-level switch input in the vehicle powered state. The body controller can transition the vehicle power state to the vehicle powered-off state when there is a brake input and a P-level switch input in an EV ready state.

[0014] The body controller can perform an external authentication or an internal authentication of the electronic key in the vehicle powered-off state, and can transition the vehicle power state to the vehicle powered state when the driver is seated in the vehicle or when a P-level switch input is detected.

[0015] The body controller can perform the internal authentication of the electronic key in the vehicle powered state, and can transition the vehicle power state to the EV ready state when a brake input or a P-level switch input is detected.

[0016] When a door is unlocked using the shared electronic key, the body controller can switch the power control mode to the shared mode. When at least one door is opened and then all doors are closed in the vehicle powered off state, the body controller can transition to the vehicle powered on state. When a drive start request is received in the vehicle powered on state, the body controller can transition to the EV ready state. When the vehicle reaches a destination, at least one door is opened and then all doors are closed, the body controller can transition to the vehicle powered on state. When a door is locked using the shared electronic key in the vehicle powered on state, the body controller can transition to the vehicle powered off state.

[0017] When the vehicle speed is less than or equal to a reference speed in the EV ready state, the body controller can switch to a Bluetooth talk mode when internal authentication of the electronic key is not performed.

[0018] According to another aspect of the disclosure, a power control method for an electric vehicle can include determining a power control mode as a factory mode or an electronic key discharge mode based on whether an electronic key is learned and whether a battery of the electronic key is discharged. The power control method can further include controlling a vehicle power transition according to a power transition logic matching the determined power control mode.

[0019] Determining the power control mode can include determining the power control mode as the factory mode when the electronic key is not learned. Determining the power control mode can further include determining the power control mode as the electronic key discharge mode when the electronic key is learned, when the electronic key is not detected outside the vehicle, and when a door is opened by a mechanical key.

[0020] Determining the power control mode as the factory mode or the electronic key discharge mode can further include outputting an emergency start guide pop-up window when the electronic key discharge mode is determined.

[0021] Controlling the vehicle power transition can include verifying a door status using a door switch to determine whether a driver is seated in the vehicle in the electronic key discharge mode.

[0022] Controlling the vehicle power transition can include transitioning the vehicle power state to the vehicle powered on state when the electronic key is capable of performing an immobilizer communication and when there is a P-level switch input. Controlling the vehicle power transition can further include transitioning the vehicle power state to the EV ready state when there is a brake input in the vehicle powered on state.

[0023] Controlling the vehicle power transition can further include transitioning the vehicle power state to the vehicle powered off state when there is a P-level switch input in the vehicle powered on state. Controlling the vehicle power transition can further include transitioning the vehicle power state to the vehicle powered off state when there is a brake input and a P-level switch input in the EV ready state.

[0024] The power supply control method can further include performing external authentication or internal authentication of the electronic key in the vehicle power-off state, and transitioning the vehicle power supply state to the vehicle power-on state when the driver is seated in the vehicle or when a P-stage switch input is detected.

[0025] The power supply control method can further include performing internal authentication of the electronic key in the vehicle power-on state, and transitioning the vehicle power supply state to the EV ready state when a brake input or a P-stage switch input is detected.

[0026] The power supply control method can further include switching the power supply control mode to the sharing mode when unlocking the door using the shared electronic key. The power supply control method can further include transitioning to the vehicle power-on state when at least one door is opened and then all doors are closed in the vehicle power-off state. The power supply control method can further include transitioning to the EV ready state when a travel start request is received in the vehicle power-on state. The power supply control method can further include transitioning to the vehicle power-on state when the vehicle reaches a destination, at least one door is opened and then all doors are closed. The power supply control method can further include transitioning to the vehicle power-off state when locking the door using the shared electronic key in the vehicle power-on state.

[0027] The power supply control method can further include switching to the Bluetooth talk mode when the vehicle speed is less than or equal to a reference speed in the EV ready state when internal authentication of the electronic key is not performed. BRIEF DESCRIPTION OF DRAWINGS

[0028] The above and other objects, features and advantages of the present disclosure will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0029] Figure 1 is a block diagram illustrating a configuration of a power supply control system for an electric vehicle according to an embodiment of the present disclosure;

[0030] Figure 2 is a flowchart illustrating a vehicle power supply control method according to an embodiment of the present disclosure;

[0031] Figure 3 is a flowchart illustrating a vehicle power supply control method according to another embodiment of the present disclosure;

[0032] Figure 4 is a flowchart illustrating a vehicle power supply control method according to another embodiment of the present disclosure;

[0033] Figure 5 is a flowchart illustrating a vehicle power supply control method according to another embodiment of the present disclosure;

[0034] Figure 6 is a flowchart illustrating a vehicle power supply control method according to another embodiment of the disclosure; and

[0035] Figure 7 is a block diagram illustrating a computing system for performing a vehicle power supply control method according to an embodiment of the disclosure. DETAILED DESCRIPTION

[0036] Hereinafter, some embodiments of the disclosure are described in detail with reference to the accompanying drawings. When a reference numeral is added to a component of each drawing, it should be noted that the same or equivalent components are denoted by the same numeral even when they are shown on other drawings. Also, in describing the embodiments of the disclosure, detailed descriptions of well-known features or functions have been omitted in order not to unnecessarily obscure the gist of the disclosure. Also, when components, devices, or elements, etc. of the disclosure are described as having a purpose or performing an operation, function, etc., the components, devices, or elements should be construed herein as being "configured to" satisfy the purpose or perform the operation or function.

[0037] In describing components according to embodiments of the disclosure, terms such as first, second, "A", "B", (a), (b), etc. can be used. These terms are merely intended to distinguish one component from another component, and the terms do not limit the nature, order or sequence of constituting components. Unless otherwise defined, all terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the disclosure belongs. Such terms as defined in a generally used dictionary are to be interpreted as having a meaning consistent with the context of the relevant technical field. Such terms should not be interpreted in an ideal or overly formal sense unless expressly so defined in the present application.

[0038] Embodiments of the disclosure relate to a technology that facilitates a vehicle power supply transition in a case where it is difficult to perform user authentication using an electronic key (e.g., a remote key, a key fob, a smart key, a digital key, etc.) in an electric vehicle that deletes a start manipulator (e.g., a start key). The case where it is difficult to perform user authentication using an electronic key can be when a vehicle system is in a factory mode (in a state where the electronic key is not learned), when a battery of the electronic key is discharged (i.e., not charged), when a shared digital key is used, etc.

[0039] Figure 1 is a block diagram illustrating a configuration of a power supply control system for an electric vehicle according to an embodiment of the disclosure.

[0040] REFERENCE Figure 1The power control system 100 can include a communication device 110, a navigation device 120, a door switch 130, a seat sensor 140, a shift-by-wire (SBW) 150, a brake switch 160, an autonomous controller 170, a power relay 180, a body controller 190, etc.

[0041] The communication device 110 can facilitate or perform communication with electronic devices located inside or outside the vehicle. The communication device 110 can include an antenna coil 111, a low frequency / radio frequency (LF / RF) module 112, a near field communication (NFC) module 113, a Bluetooth module 114, etc.

[0042] The antenna coil 111 can support communication between a theft alarm and a transponder of the electronic key 200. The antenna coil 111 can be separately installed near a console in the vehicle, and in the vehicle, a start manipulator is not included. The antenna coil 111 can be used so that the vehicle system (e.g., a smart key system) learns the electronic key 200 in a factory mode. For example, after the electronic key 200 is placed within a communication possible distance (i.e., within a communication range) that can be covered by the antenna coil 111, the antenna coil 111 can cause the vehicle system to learn the electronic key 200.

[0043] The LF / RF module 112 can determine whether the electronic key 200 is located in the vehicle using LF communication and RF communication. In other words, the LF / RF module 112 can be used for internal authentication of the electronic key 200. The LF / RF module 112 can include an LF antenna and / or an RF receiver. The LF / RF module 112 can transmit a response request signal for internal authentication of the electronic key 200 via the LF antenna. The LF / RF module 112 can receive a response signal transmitted from the electronic key 200 using RF communication.

[0044] The NFC module 113 can facilitate external authentication and / or internal authentication of the electronic key 200 through NFC communication with the electronic key 200. The NFC module 113 can be installed in an outer door handle, a wireless power control unit (WPC), etc. When the electronic key 200 is externally authenticated, the NFC module 113 installed on the outer door handle can be used to detect whether the electronic key 200 is located outside the vehicle. When the electronic key 200 is internally authenticated, the NFC module 113 installed on the WPC can be used to detect whether the electronic key 200 is located inside the vehicle.

[0045] The Bluetooth module 114 can support wireless communication with a user terminal. For example, the Bluetooth module 114 can support a Bluetooth call. The user terminal can be an electronic device capable of performing wireless and / or wired communication, which can be a smartphone, a tablet, a personal digital assistant (PDA), a portable multimedia player (PMP), a laptop, etc.

[0046] When a destination is set, the navigation device 120 can search for a driving route to the destination and can guide a driver along the driving route. The navigation device 120 can search for an optimal route (e.g., shortest distance, minimum time, etc.) by reflecting real-time traffic information when searching for a driving route. Although not shown in the drawings, the navigation device 120 can include a memory for storing map data, a global positioning system (GPS) receiver for measuring a vehicle position, a communication module for receiving traffic information from the outside, a display (e.g., a touch screen) for overlapping and displaying a vehicle position and a driving route on map data, a processor for searching for a driving route and guiding a driver along the found driving route, etc.

[0047] A door switch 130 can be installed in each of the vehicle doors to transmit a signal indicating a door state to the body controller 190. For example, the door switch 130 can transmit a signal indicating whether a door is opened, whether a door is closed, whether a door is locked, whether a door is unlocked, etc.

[0048] A seat sensor 140 can be installed on a seat (e.g., a driver's seat) in a vehicle to sense whether a user is seated in the seat. A weight sensor, a pressure sensor, etc. can be applied to or as the seat sensor 140.

[0049] An SBW 150 can adjust a gear of a transmission according to a user's manipulation. The gear can be divided into a park (P) level, a drive (D) level, a reverse (R) level, a neutral (N) level, etc. The SBW 150 can transmit a signal indicating whether a P level switch, a D level switch, an R level switch, an N level switch, etc. are input to the body controller 190. The SBW 150 can be applied in the form of a button, a dial, a lever, etc.

[0050] A brake switch 160 can detect a brake state according to a manipulation of a brake. The brake switch 160 can transmit a signal indicating a brake state (i.e., whether a brake is input) to the body controller 190. For example, when a user turns on or activates a brake, the brake switch 160 can output '1', and when the user does not turn on or activate the brake, the brake switch 160 can output '0'.

[0051] The autonomous controller 170 can identify a vehicle state and a driving environment using various sensors (e.g., a camera, a radar, a light detection and ranging (LiDAR), an ultrasonic sensor, etc.) provided in the vehicle. The autonomous controller 170 can control a behavior (e.g., steering, acceleration, deceleration, braking, etc.) of the vehicle with respect to the identified vehicle state and the identified driving environment to perform autonomous driving. The autonomous controller 170 can interact with the navigation device 120 to plan a driving route and can drive the vehicle along the driving route. When the vehicle reaches a destination, the autonomous controller 170 can notify the body controller 190 that the vehicle reaches the destination. Although not shown in the drawings, the autonomous controller 170 can include a processor and can include a memory installed inside and / or outside the autonomous controller 170.

[0052] The power relay 180 can set a transmission path of a power source, and can be implemented as a switching element. In other words, the power relay 180 can perform a vehicle power conversion at the instruction of the body controller 190. The power relay 180 can convert a vehicle power state. The vehicle power state can be divided into a vehicle power-off state, a vehicle power-on state, an electric vehicle (EV) ready state, etc. The vehicle power-on state can be a state in which power is supplied to all electrical devices in the vehicle, and the EV ready state can be a state in which power can be supplied to a drive motor loaded in the vehicle.

[0053] The body controller 190 can be an integrated body control unit (IBU) in which electronic control units such as a body control module (BCM), an intelligent key system, a parking assist system, a tire pressure monitoring system, and / or an immobilizer are integrated into one. The body controller 190 can include a processor 191 and a memory 192. The processor 191 can perform overall control of the body controller 190. The processor 191 can include at least one or more processing devices such as an application-specific integrated circuit (ASIC), a digital signal processor (DSP), a programmable logic device (PLD), a field programmable gate array (FPGA), a central processing unit (CPU), a microcontroller, and / or a microprocessor. The memory 192 can be a non-transitory storage medium that stores instructions executed by the processor 191. The present embodiment includes the memory 192 located inside the body controller 190, but the present disclosure is not limited thereto. For example, the memory 192 can be located outside the body controller 190. The memory 192 can include at least one storage medium such as a flash memory, a hard disk, a solid state drive (SSD), a static RAM (SRAM), a read-only memory (ROM), a programmable ROM (PROM), an electrically erasable programmable ROM (EEPROM), an erasable programmable ROM (EPROM), and / or a register.

[0054] The body controller 190 can perform user authentication (electronic key authentication) and / or vehicle power conversion control in an electric vehicle that does not include a start manipulator (e.g., a start button). The body controller 190 can be woken up when a predetermined event signal is received.

[0055] When woken up, the body controller 190 can determine whether the electronic key 200 is learned in the vehicle system. The body controller 190 can determine a power control module according to whether the electronic key 200 is learned in the vehicle system. When the electronic key 200 is not learned in the vehicle system, the body controller 190 can determine the power control module as a factory mode.

[0056] The body controller 190 can determine whether the electronic key 200 can perform an immobilizer communication (hereinafter referred to as "IMMO communication") in the factory mode. In other words, the body controller 190 can determine whether communication between the electronic key 200 and the antenna coil 111 can be performed. When the P-stage switch input is maintained for more than a predetermined time (e.g., 2 seconds) in a state in which the IMMO communication can be performed, the body controller 190 can provide a vehicle power for vehicle diagnosis. In other words, the body controller 190 can switch (convert) the vehicle power state from a vehicle power-off state to a vehicle power-on state.

[0057] In addition, the body controller 190 can operate the vehicle power state in the vehicle power-on state or the EV ready state to perform a vehicle check in the factory mode. The body controller 190 can determine to convert from the vehicle power-on state or the EV ready state to the vehicle power-off state based on the P-stage switch input, a brake input, etc. For example, when the P-stage switch input is maintained for more than 2 seconds in the EV ready state, the body controller 190 can switch to the vehicle power-off state. When a brake input and a P-stage switch input for more than 2 seconds are detected in the vehicle power-on state, the body controller 190 can switch to the vehicle power-off state.

[0058] When the vehicle system learns the electronic key 200, the body controller 190 can determine whether the battery of the electronic key 200 is discharged. When the electronic key 200 is not detected outside the vehicle and when the door is unlocked by the mechanical key, the body controller 190 can determine that the battery of the electronic key 200 is discharged to determine the power supply control mode as the electronic key discharge mode. Because the internal authentication of the electronic key 200 cannot be performed using the LF communication and the RF communication when the battery of the electronic key 200 is discharged, the electronic key discharge mode is determined. When the electronic key discharge mode is determined, the body controller 190 can output a pop-up window (emergency start guide pop-up window) that provides a notification of an emergency start method (internal authentication method) using the IMMO communication on the cluster. Thereafter, the body controller 190 can determine whether the driver is seated in the vehicle using the seat sensor 140 and the door switch 130.

[0059] When the driver is seated in the vehicle, the body controller 190 can determine to transition the vehicle power supply state based on information such as a state in which the electronic key 200 can perform the IMMO communication, the P-stage switch input, and / or the brake input. When the electronic key 200 is within a communication possible distance (i.e., within a communication range) of the antenna coil 111 near the console in the vehicle, the body controller 190 can determine that the electronic key 200 can perform the IMMO communication. When the electronic key 200 can perform the IMMO communication in the vehicle power-off state and when the P-stage switch input is maintained for 2 seconds or more, the body controller 190 can control the power supply relay 180 to transition to the vehicle power-on state. When the electronic key 200 can perform the IMMO communication in the vehicle power-off state or the vehicle power-on state, when the P-stage switch input is maintained for 2 seconds or more, and when there is the brake input, the body controller 190 can transition to the EV ready state.

[0060] When the P-stage switch input of the SBW 150 for 2 seconds or more is detected in the EV ready state, the body controller 190 can transition to the vehicle power-off state. When the brake input is detected using the brake switch 160 in the vehicle power-on state and the P-stage switch input for 2 seconds or more is detected through the SBW 150, the body controller 190 can transition to the vehicle power-off state.

[0061] The body controller 190 can perform the internal authentication using the NFC communication only for the electronic key 200 authorized by the vehicle owner. The vehicle owner can grant the user the authority to use the electronic key 200. At this time, the vehicle owner can limit the available time, available functions, etc. of the electronic key 200. For example, the vehicle owner can grant the user the authority to use the electronic key 200 at a time requested by the user. In addition, the vehicle owner can grant the user the authority to use functions such as the door lock, the door unlock, the trunk and tailgate, the power control, etc.

[0062] When the driver's door is opened and the internal authentication of the electronic key 200 is successfully performed, when at least one of the doors is opened and then all the doors are closed and the internal authentication of the electronic key 200 is successfully performed, or when the P-stage switch is input and the internal authentication of the electronic key 200 is successfully performed, the body controller 190 can transition from the vehicle power-off state to the vehicle power-on state. When there is a brake input in the vehicle power-on state and when the internal authentication of the electronic key 200 is successfully performed, the body controller 190 can transition to the EV ready state. When at least one door is opened in a state in which the driver is not seated in the vehicle, the vehicle speed is less than a threshold speed, and the gear is the P-stage, or when at least one door is opened and then all the doors are closed, the electronic key 200 is not present inside the vehicle, and the gear is the P-stage, the body controller 190 can transition from the EV ready state to the vehicle power-on state. When the doors are switched to the locked state in the vehicle power-on state and the gear is the P-stage, or when the P-stage switch is input during a predetermined time, the body controller 190 can transition from the vehicle power-on state to the vehicle power-off state.

[0063] Further, when unlocking the door using the shared electronic key 200, the body controller 190 can change the power conversion logic. When at least one of the doors is opened in the vehicle power-off state and then all the doors are closed, the body controller 190 can transition to the vehicle power-on state. When a travel start request is received in the vehicle power-on state, the body controller 190 can transition from the vehicle power-on state to the EV ready state. For example, when a user inputs a travel start button, the body controller 190 can display the travel start button on the display of the navigation device 120 and can convert the vehicle power state to the EV ready state.

[0064] After the vehicle arrives at the destination, when at least one of the doors is opened and then all the doors are closed, the body controller 190 can transition from the EV ready state to the vehicle power-on state. When a user locks the door using the authorized electronic key or marks the authorized electronic key to the outside handle to lock the door, the body controller 190 can transition from the vehicle power-on state to the vehicle power-off state.

[0065] The body controller 190 can perform the external authentication or the internal authentication of the electronic key 200 and can identify the user's intention to be seated in the vehicle based on information about the seat sensor 140 and the P-stage switch input regarding the SBW 150. After the user unlocks the driver's door through NFC communication between the electronic key 200 and the NFC module 113, when it is detected that the user is seated in the driver's seat or when the P-stage switch input is detected, the body controller 190 can switch from the vehicle power-off state to the vehicle power-on state.

[0066] For example, in a state where external authentication of the electronic key 200 is successfully performed using NFC communication outside the vehicle, when the user sits in the driver's seat or when the P-stage switch is input, the body controller 190 can switch the vehicle power state from the vehicle power-off state to the vehicle power-on state. At this time, the external authentication of the electronic key 200 can be maintained during a predetermined time (for example, 30 seconds). When the authentication of the electronic key 200 expires due to the lapse of the predetermined time, when it is detected that the driver is seated in the vehicle or when the P-stage switch is input, the body controller 190 can output a pop-up window "Put the phone on the wireless charger" on the cluster. The body controller 190 can perform internal authentication of the electronic key 200 by NFC communication with the WPC in the vehicle power-off state, and can transition to the vehicle power-on state when it is detected that the driver is seated in the vehicle or when the P-stage switch is input. The body controller 190 can perform internal authentication of the electronic key 200 in the vehicle power-on state, and can transition to the EV ready state when the brake input or the P-stage switch input is maintained for 10 seconds or more. When the vehicle speed moves less than or equal to a reference speed (for example, 5 kph) in the EV ready state and when internal authentication of the electronic key 200 is not performed, the body controller 190 can output a pop-up window asking about switching to a Bluetooth talk mode on the cluster.

[0067] The body controller 190 can perform internal authentication of the electronic key 200 in the vehicle power-off state, and can transition to the EV ready state when the P-stage switch input is maintained for 10 seconds or more. When internal authentication of the electronic key 200 is not performed in the EV ready state and when at least one door is opened and then all doors are closed and the P-stage switch is input, the body controller 190 can transition to the vehicle power-on state. When the user tags the electronic key 200 to the NFC module 113 of the outer door handle in the vehicle power-on state, the body controller 190 can transition to the vehicle power-off state.

[0068] Figure 2 FIG. 1 is a flowchart illustrating a vehicle power control method according to one embodiment of the present disclosure.

[0069] In S100, Figure 1 The body controller 190 of FIG. 1 can operate in the vehicle power-off state. The body controller 190 can operate in a sleep mode in the vehicle power-off state, and can switch the sleep mode to a wake-up mode when a predetermined event signal is received.

[0070] In S105, the body controller 190 can determine whether the vehicle system learns the electronic key 200 in the vehicle power-off state. When woken up, the body controller 190 can determine whether the vehicle system learns the electronic key 200.

[0071] When the vehicle system does not learn the electronic key 200, in S110, the body controller 190 can determine the power control mode as a factory mode. The body controller 190 can change the default power control logic to the power control logic matching the factory mode.

[0072] When the vehicle system learns the electronic key 200 in S105, in S115, the body controller 190 can determine whether the electronic key 200 is detected outside the vehicle. The body controller 190 can determine whether the electronic key 200 is located outside the vehicle using the communication device 110 of Figure 1 When the electronic key 200 is located outside the vehicle, the body controller 190 can maintain the vehicle power-off state. When the electronic key 200 is not located outside the vehicle, the body controller 190 can perform S120. The body controller 190 can determine whether a user approaching the vehicle has the electronic key 200.

[0073] When the electronic key 200 is not detected outside the vehicle, in S120, the body controller 190 can determine whether the door is opened by the mechanical key. The body controller 190 can determine whether the user enters (sits in) the vehicle using the mechanical key.

[0074] When the door is opened by the mechanical key, in S125, the body controller 190 can determine the power control mode as an electronic key discharge mode. Because it is possible to open the door of the vehicle using only the mechanical key when the battery of the electronic key 200 is discharged, the body controller 190 can determine that the battery of the electronic key 200 is discharged when the door is opened by the mechanical key.

[0075] When the electronic key discharge mode is determined, in S130, the body controller 190 can output an emergency start guide pop-up window. The body controller 190 can output a welcome pop-up window, and can output the emergency start guide pop-up window on a cluster or a navigation device 120 of a display device (for example, Figure 1 ).

[0076] While the emergency start guide pop-up window is output, in S135, the body controller 190 can determine whether the driver's door is opened. The body controller 190 can determine whether the driver's door is opened using the door switch 130 installed on the driver's door.

[0077] When the driver's door is not opened, in S140, the body controller 190 can determine whether the door other than the driver's door is opened. The body controller 190 can determine whether the door other than the driver's door is opened using the door switch 130 installed on the corresponding door that is not the driver's door.

[0078] When the door other than the driver's door is opened, the body controller 190 can determine whether all the doors are closed in S145. The body controller 190 can determine that all the doors are closed using the door switches 130 installed on each of the vehicle doors.

[0079] When all the doors are closed, the body controller 190 can determine whether IMMO communication can be performed with the electronic key 200 in S150. When it is determined that all the doors of the vehicle are closed, the body controller 190 can determine whether communication between the electronic key 200 and the antenna coil 111 of the SBW 150 can be performed. Figure 1

[0080] When the IMMO communication can be performed with the electronic key 200, the body controller 190 can determine whether there is a P-stage switch input in S155. The body controller 190 can detect the P-stage switch input through the SBW 150. Figure 1 The body controller 190 can determine whether the P-stage switch input is maintained for a predetermined time (e.g., 2 seconds).

[0081] When there is the P-stage switch input, the body controller 190 can transition to the vehicle power-on state in S160. When the P-stage switch input is maintained for 2 seconds or more, the body controller 190 can switch from the vehicle power-off state to the vehicle power-on state.

[0082] The body controller 190 can determine whether there is a brake input in the vehicle power-on state in S165. The body controller 190 can determine whether there is the brake input using the brake switch 160. Figure 1

[0083] When there is the brake input, the body controller 190 can transition to the EV ready state in S170. When there is the brake input in the vehicle power-on state, the body controller 190 can determine that the user has a driving intention to switch from the vehicle power-on state to the EV ready state.

[0084] When the power control mode is determined to be the factory mode in S110 or when it is determined that the driver's door is opened in S135, the body controller 190 can perform S150.

[0085] When it is determined that the door other than the driver's door is closed in S140 or when it is determined that at least one door of the vehicle is opened in S145, the body controller 190 can return to S130.

[0086] When the electronic key 200 cannot perform the IMMO communication in S150, when there is no P-stage switch input in S155, or when there is no brake input in S165, the body controller 190 can return to S110. ​​

[0087] According to the above-described embodiment, because the door opening and closing conditions cannot be determined in the factory mode, the body controller 190 can not be able to consider whether the door is open or closed when determining the power conversion. Further, because the internal authentication of the electronic key 200 cannot be performed using the LF communication and the RF communication in the factory mode or the electronic key discharge mode, the body controller 190 can perform the internal authentication of the electronic key 200 using the IMMO communication using the antenna coil 111.

[0088] Figure 3 is a flowchart illustrating a vehicle power control method according to another embodiment of the disclosure. The present embodiment uses a vehicle such as a shared car or a robot taxi.

[0089] Reference Figure 3 In S200, the body controller 190 of the vehicle can operate in a default mode. The body controller 190 can perform Figure 1 the internal authentication and / or the external authentication of the electronic key 200, and can control the conversion of the vehicle power state based on whether the driver is seated in the vehicle, a brake input, and the like. Figure 1 In S205, the body controller 190 can determine whether to unlock the door by a shared electronic key in the default mode. The shared electronic key can be a digital key authorized by the vehicle owner, which can be limited in terms of available time (e.g., a time requested by the user) and functions (e.g., door lock, door unlock, trunk and tailgate, power control functions, and the like).

[0090] When the door is unlocked by the shared electronic key, in S210, the body controller 190 can switch the power control mode from the default mode to a shared mode. The body controller 190 can change the power conversion logic when the user unlocks the door using the shared electronic key or when the user tags the shared electronic key to the NFC module 113 installed on the outer door handle to unlock the door. Because the door is unlocked using the authorized electronic key when entering the shared mode, the body controller 190 can not be able to perform the internal authentication process of the shared electronic key after entering the shared mode.

[0091] After switching the power control mode to the shared mode, in S215, the body controller 190 can maintain the vehicle power state as the vehicle power-off state.

[0092] In S220, the body controller 190 can determine whether at least one of the vehicle doors is open in the vehicle power-off state. The body controller 190 can detect that at least one of the vehicle doors is open using

[0093] the door switch 130. Figure 1

[0094] ​After at least one door is opened, in S225, the body controller 190 can determine whether all doors are closed. When at least one door is detected to be open using the door switch 130, the body controller 190 can determine whether all doors of the vehicle are closed.

[0095] When all doors are closed, in S230, the body controller 190 can switch to the vehicle energized state. When at least one door is open and then all doors are closed in the vehicle de-energized state, the body controller 190 can be used... Figure 1 The power relay 180 switches the vehicle from a power-off state to a power-on state.

[0096] In S235, the body controller 190 can determine whether a driving start request has been received while the vehicle is powered on. Figure 1 The navigation device 120 displays the start button, and can determine whether the start button was input by the user. Furthermore, the body controller 190 can... Figure 1 The autonomous controller 170 receives the driving start request.

[0097] When a driving start request is received, in S240, the body controller 190 can switch from the vehicle powered-on state to the EV ready state.

[0098] In S245, the body controller 190 can determine whether the vehicle has reached its destination while in EV-ready state. The body controller 190 can... Figure 1 The navigation device 120 and / or autonomous controller 170 receive destination arrival information.

[0099] When the vehicle arrives at its destination, in S250, the body control unit 190 can determine whether at least one door is open. The body control unit 190 can use the door switch 130 to determine that at least one of the doors is open.

[0100] After detecting that at least one of the vehicle doors is open, in S255, the body control 190 can determine whether all doors are closed. The body control 190 can use the door switch 130 to determine that all doors are closed.

[0101] When all doors are closed, in S260, the body controller 190 can switch the vehicle power state from EV ready state to vehicle powered state. When at least one of the users in the vehicle disembarks after the vehicle arrives at its destination, the body controller 190 can switch back to vehicle powered state.

[0102] In S265, the body controller 190 can determine whether to lock the doors using a shared electronic key while the vehicle is powered on.

[0103] When the door is locked using a shared electronic key, the body controller 190 in S270 can switch to a vehicle power-off state. When the user locks the door using the shared electronic key, the body controller 190 can switch the vehicle power state to a vehicle power-off state.

[0104] When the vehicle is switched to a power-off state, in S275, the body controller 190 can switch the power control mode to the default mode.

[0105] Figure 4 This is a flowchart illustrating a vehicle power control method according to another embodiment of the present disclosure.

[0106] In S300, Figure 1 The body controller 190 can operate in EV-ready mode.

[0107] In S305, the body controller 190 can determine whether a P-level switch input exists in the EV-ready state. The body controller 190 can use... Figure 1 The SBW 150 is used to determine whether the gear remains in P for 2 seconds.

[0108] When a P-level switch input is present, the body controller 190 can switch to the vehicle power-off state in S310. When the gear is held in P-level for more than 2 seconds, the body controller 190 can switch the vehicle power state to the vehicle power-off state.

[0109] In S315, the body controller 190 can operate while the vehicle is powered on.

[0110] In S320, the body controller 190 can determine whether there is a braking input when the vehicle is powered on. The body controller 190 can use... Figure 1 The brake switch 160 determines whether there is a brake input.

[0111] When a brake input is present, in S325, the body controller 190 can determine whether a P-level switch input is present. The body controller 190 can use SBW 150 to determine whether a P-level switch input is present.

[0112] When a P-level switch input is present in S325, the body controller 190 can switch to the vehicle power-off state in S310. When the P-level switch input is held for more than 2 seconds, the body controller 190 can switch the vehicle power state from the vehicle power-on state to the vehicle power-off state.

[0113] Figure 5is a flowchart illustrating a vehicle power supply control method according to another embodiment of the disclosure.

[0114] In S400, the body controller 190 can determine whether to perform external authentication or internal authentication of the electronic key 200 in the vehicle power-off state. Figure 1 The body controller 190 can operate in the vehicle power-off state.

[0115] In S405, the body controller 190 can determine whether to perform external authentication or internal authentication of the electronic key 200. The body controller 190 can perform external authentication through communication between the electronic key 200 and the NFC module 113 installed on the outdoor door handle. In addition, the body controller 190 can perform internal authentication through communication between the electronic key 200 and the NFC module 113 installed on the WPC. Figure 1

[0116] After performing external authentication or internal authentication of the electronic key 200, in S410, the body controller 190 can determine whether the driver is seated in the vehicle or whether there is a P-stage switch input. After successfully performing external authentication or internal authentication of the electronic key 200 through NFC communication, the body controller 190 can determine whether the user is seated in the driver's seat using the seat sensor 140 installed on the driver's seat. The body controller 190 can determine whether the driver is seated in the vehicle according to whether the user is seated in the driver's seat. In addition, the body controller 190 can determine whether there is a P-stage switch input using the SBW 150. Figure 1

[0117] When the driver is seated in the vehicle or when there is a P-stage switch input, in S415, the body controller 190 can transition to the vehicle power-on state. When the user is seated in the driver's seat or when the gear is set to the P-stage, the body controller 190 can switch from the vehicle power-off state to the vehicle power-on state.

[0118] In S420, the body controller 190 can determine whether to perform internal authentication of the electronic key 200 in the vehicle power-on state. The body controller 190 can perform internal authentication of the electronic key 200 using wireless communication with the NFC module 113 installed on the WPC in the vehicle power-on state.

[0119] After performing internal authentication of the electronic key 200, in S425, the body controller 190 can determine whether there is a brake input or a P-stage switch input. The body controller 190 can determine whether there is a brake input using the brake switch 160, and can determine whether there is a P-stage switch input using the SBW 150. Figure 1

[0120] ​​​When there is a brake input or a P lever switch input, the body controller 190 can transition to the EV ready state in S430. When there is a brake input or when the P lever switch input is maintained for 10 seconds or more, the body controller 190 can control the power supply relay 180 to switch the vehicle power supply state from the vehicle power-on state to the vehicle power-off state.

[0121] Figure 6 FIG. 1 is a flowchart illustrating a vehicle power supply control method according to another embodiment of the disclosure.

[0122] In S500, the body controller 190 of the vehicle 100 can operate in the EV ready state. Figure 1 The body controller 190 of the vehicle 100 can operate in the EV ready state.

[0123] In S505, the body controller 190 can determine whether the vehicle speed is less than or equal to a reference speed (e.g., 5 kph) in the EV ready state. The body controller 190 can verify the vehicle speed through the vehicle speed sensor 111, Figure 1 the navigation device 120 of the vehicle 100, Figure 1 the autonomous controller 170 of the vehicle 100, etc.

[0124] When the vehicle speed is less than or equal to the reference speed, the body controller 190 can determine whether the internal authentication of the electronic key 200 is not performed in S510. The body controller 190 can determine whether the internal authentication of the electronic key 200 is successfully performed through communication with the LF / RF module 112, Figure 1 the navigation device 120 of the vehicle 100, Figure 1 the NFC module 113 installed in the interior of the vehicle, etc.

[0125] When the internal authentication of the electronic key 200 is not performed, the body controller 190 can switch to the busy mode in S515. When the internal authentication of the electronic key 200 fails, the body controller 190 can determine that the user terminal equipped with the electronic key 200 will switch the operation mode to the busy mode during the call.

[0126] In S520, the body controller 190 can output a query pop-up window for verifying the intention to switch to the Bluetooth call mode. The body controller 190 can output a message suggesting a change in the channel using Bluetooth on the display of the cluster or Figure 7 the navigation device 120 of the vehicle 100.

[0127] In S525, the body controller 190 can determine whether a positive confirmation of the change in the Bluetooth call mode is received.

[0128] When the positive confirmation is received, the body controller 190 can switch to the Bluetooth call mode in S530.

[0129] When the positive confirmation is received, the body controller 190 can switch to the Bluetooth call mode in S530.

[0129] When the positive confirmation is received, the body controller 190 can switch to the Bluetooth call mode in S530.

[0129] Figure 7 is a block diagram illustrating a computing system for performing a vehicle power supply control method according to an embodiment of the disclosure.

[0130] Referring to ​ , the computing system 1000 can include at least one processor 1100, a memory 1300, a user interface input device 1400, a user interface output device 1500, a storage device 1600, and a network interface 1700 connected to each other via a bus 1200.

[0131] The processor 1100 can be a central processing unit (CPU) or a semiconductor device that processes instructions stored in the memory 1300 and / or the storage device 1600. The memory 1300 and the storage device 1600 can include various types of volatile or non-volatile storage media. For example, the memory 1300 can include read-only memory (ROM) 1310 and random access memory (RAM) 1320.

[0132] Accordingly, the operations of the methods or algorithms described in connection with the embodiments disclosed herein can be embodied directly in hardware, in software modules executed by the processor 1100, or in a combination of hardware and software modules. The software modules can reside on a storage medium (i.e., the memory 1300 and / or the storage device 1600) such as RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, a removable disk, and CD-ROM. The storage medium can be coupled to the processor and the processor can read information from, and record information to, the storage medium. Alternatively, the storage medium can be integrated into the processor 1100. The processor 1100 and the storage medium can reside in an application-specific integrated circuit (ASIC). The ASIC can reside in a user terminal. In another case, the processor 1100 and the storage medium can reside as discrete components in a user terminal.

[0133] According to an embodiment of the disclosure, the power supply control system can facilitate a vehicle power conversion in a case where it is difficult to perform user authentication using an electronic key in a vehicle in which a starting manipulator is removed.

[0134] In addition, according to an embodiment of the disclosure, the power supply control system can perform user authentication and can control power conversion in a case where a driver other than a vehicle owner operates a vehicle such as a shared car or a robot taxi, thereby increasing usability or convenience of a user.

[0135] In addition, according to an embodiment of the disclosure, the power supply control system can strengthen security through dual control of authentication and power conversion of a driver other than a vehicle owner.

[0136] Further, according to an embodiment of the disclosure, the power control system can facilitate power transition control in a factory mode (in a state where the electronic key is not learned) to supply the vehicle power in a process required to supply the vehicle power, and can control the power transition based on a separate electronic key internal authentication means, a P-stage switch input, and a brake switch input regarding a factory work environment to provide work convenience to a worker.

[0137] Further, according to an embodiment of the disclosure, when a battery of an electronic key (e.g., a remote control key) is discharged, the power control system can facilitate power transition control, and in an emergency, can guide a driver to perform an emergency start method to facilitate vehicle travel, thereby providing usability and convenience to a user.

[0138] In the foregoing, although the disclosure has been described with reference to several embodiments and drawings, the disclosure is not limited thereto. Those of ordinary skill in the art to which the disclosure pertains can make various modifications and changes to the embodiments without departing from the spirit and scope of the disclosure claimed in the appended claims. Accordingly, the embodiments of the disclosure are provided to explain the spirit and scope of the disclosure, not to limit the spirit and scope of the disclosure, so that the spirit and scope of the disclosure are not limited by the embodiments. The scope of the disclosure should be interpreted based on the appended claims, and all technical ideas within the scope equivalent to the claims should be included in the scope of the disclosure.

Claims

1. A power control system for an electric vehicle that does not include a start manipulator, the power control system comprising: a communication device configured to perform wireless communication with an electronic key; and a body controller connected with the communication device, wherein the body controller is configured to determine a power control mode as a factory mode or an electronic key discharge mode based on whether an electronic key is learned and whether a battery of the electronic key is discharged; and to control a vehicle power transition according to a power transition logic matching the determined power control mode.

2. The power control system of claim 1, wherein, The body controller determines the power control mode as the factory mode when the electronic key is not learned; and determines the power control mode as the electronic key discharge mode when the electronic key is learned, when the electronic key is not detected outside the vehicle, and when a door is opened by a mechanical key.

3. The power control system of claim 1, wherein, The body controller outputs an emergency start guide pop-up window when the electronic key discharge mode is determined.

4. The power control system of claim 1, wherein, The body controller verifies a door status using a door switch in the electronic key discharge mode to determine whether a driver is seated in the vehicle.

5. The power control system of claim 1, wherein, The body controller transitions a vehicle power state to a vehicle powered state when the electronic key is capable of performing an immobilizer communication and when there is a P-level switch input; and transitions the vehicle power state to an electric vehicle ready state when there is a brake input in the vehicle powered state.

6. The power control system of claim 5, wherein, The body controller transitions the vehicle power state to a vehicle powered-off state when there is the P-level switch input in the vehicle powered state; and transitions the vehicle power state to the vehicle powered-off state when there are the brake input and the P-level switch input in the electric vehicle ready state.

7. The power control system of claim 1, wherein, The body controller performs an external authentication or an internal authentication of the electronic key in a vehicle powered-off state, and transitions a vehicle power state to a vehicle powered state when a driver is seated in the vehicle or when a P-level switch input is detected.

8. The power control system of claim 7, wherein, The body controller performs the internal authentication of the electronic key in the vehicle powered state, and transitions the vehicle power state to an electric vehicle ready state when a brake input or the P-level switch input is detected.

9. The power control system of claim 1, wherein, The body controller switches a power control mode to a shared mode when a door is unlocked using a shared electronic key; transitions to a vehicle powered state when at least one door is opened and then all doors are closed in a vehicle powered-off state; transitions to an electric vehicle ready state when a travel start request is received in the vehicle powered state; transitions to the vehicle powered state when the vehicle reaches a destination, at least one door is opened and then all doors are closed; and transitions to the vehicle powered-off state when a vehicle door is locked using the shared electronic key in the vehicle powered state.

10. The power control system of claim 9, wherein, When the vehicle speed is less than or equal to a reference speed in the electric vehicle ready state, the body controller switches to a Bluetooth talk mode when internal authentication of the electronic key is not performed.

11. A power control method for an electric vehicle that does not include a start manipulator, the power control method comprising the steps of: determining a power control mode to be a factory mode or an electronic key discharge mode based on whether an electronic key is learned and whether a battery of the electronic key is discharged; and controlling a vehicle power transition according to power transition logic matching the determined power control mode.

12. The power supply control method according to claim 11, wherein determining the power control mode to be the factory mode or the electronic key discharge mode includes the steps of: determining the power control mode to be the factory mode when the electronic key is not learned; and determining the power control mode to be the electronic key discharge mode when the electronic key is learned, when the electronic key is not detected outside the vehicle, and when a door is opened by a mechanical key.

13. The power supply control method according to claim 12, wherein determining the power control mode to be the factory mode or the electronic key discharge mode further includes the steps of: outputting an emergency start guide pop-up window when the electronic key discharge mode is determined.

14. The power control method of claim 11, wherein, controlling the vehicle power transition includes the steps of: verifying a door state using a door switch in the electronic key discharge mode to determine whether a driver is seated in the vehicle.

15. The power control method of claim 11, wherein, controlling the vehicle power transition includes the steps of: transitioning a vehicle power state to a vehicle powered state when the electronic key is capable of performing an immobilizer communication and when there is a P-level switch input; and transitioning the vehicle power state to an electric vehicle ready state when there is a brake input in the vehicle powered state.

16. The power control method of claim 15, wherein, controlling the vehicle power transition further includes the steps of: transitioning the vehicle power state to a vehicle powered off state when there is the P-level switch input in the vehicle powered state; and transitioning the vehicle power state to the vehicle powered off state when there are the brake input and the P-level switch input in the electric vehicle ready state.

17. The power control method according to claim 11, further comprising the steps of: performing external authentication or internal authentication of the electronic key in a vehicle powered off state, and transitioning a vehicle power state to a vehicle powered on state when a driver is seated in the vehicle or when a P-level switch input is detected.

18. The power control method according to claim 17, further comprising the steps of: performing the internal authentication of the electronic key in the vehicle powered on state, and transitioning the vehicle power state to an electric vehicle ready state when a brake input or the P-level switch input is detected.

19. The power control method according to claim 11, further comprising the steps of: switching a power control mode to a shared mode when a door is unlocked using a shared electronic key; transitioning to a vehicle powered on state when at least one door is opened and then all doors are closed in a vehicle powered off state; when a travel start request is received in the vehicle powered state, transition to an electric vehicle ready state; when the vehicle reaches a destination, at least one door is opened and then all doors are closed, transition to the vehicle powered state; and when a door is locked using the shared electronic key in the vehicle powered state, transition to a vehicle powered off state.

20. The power supply control method according to claim 19, further comprising the steps of: when a vehicle speed is less than or equal to a reference speed in the electric vehicle ready state, when internal authentication of the electronic key is not performed, switching to a Bluetooth talk mode.

Images