Power control method of electric vehicle and electric vehicle controlled by same

Abstract

The invention provides a power control method of an electric vehicle and the electric vehicle controlled by the method. The electric vehicle includes a start button, a high voltage battery, a driving essential device configured to receive power from the high voltage battery, a convenience device configured to receive power from the high voltage battery, and a controller configured to convert a power mode to one of a first power mode and a second power mode. The method includes: converting, by a controller, a power mode to a first power mode in response to a start button being operated once in an off mode; transitioning the power mode to a second power mode in response to operating the start button and operating the brake in the off mode or the first power mode; and converting the power mode to an off mode in response to a first set time elapsed in the first power mode.

Description

Technical Field

[0001] The present disclosure relates to a power control method of an electric vehicle, and to an electric vehicle controlled by the method. Background Art

[0002] In a conventional electric vehicle, the electric mode consists of the following four mode systems: an OFF mode, an adaptive cruise control mode (ACC mode), an ignition control mode (IGN mode), and a READY mode.

[0003] Here, the ACC mode is a mode in which power is applied to convenience devices in the vehicle, the IGN mode is a mode in which power is applied to all devices in the vehicle, and the READY mode is a mode in which the vehicle can be driven at any time by releasing the brake pedal and depressing the accelerator pedal.

[0004] If the start button is pressed without brake operation, the electric mode switches from OFF mode to ACC mode, and if the start button is pressed twice without brake operation in OFF mode, the electric mode switches to IGN mode. If the brake pedal is depressed and the start button is pressed with the shift lever in the parking position (hereinafter referred to as P range) or the neutral position (hereinafter referred to as N range), the electric mode switches to READY mode. Summary of the invention

[0005] The present disclosure provides a method of simplifying a power mode in an electric vehicle and preventing excessive consumption of a battery in the simplified power mode system.

[0006] The present disclosure provides a control method for effectively converting a power mode by adding a utility mode in an electric vehicle.

[0007] The present disclosure provides a method for switching to a power-off mode during driving or when a shift lever is not in a P gear.

[0008] According to an embodiment of the present disclosure, a power control method for an electric vehicle is provided. The electric vehicle includes a start button, a high-voltage battery, at least one essential driving device configured to be powered from the high-voltage battery, at least one convenience device configured to be powered from the high-voltage battery, and a controller configured to convert the power mode to one of an off mode, a first power mode, and a second power mode. The method includes: by the controller, in response to determining that the start button is operated once in the off mode, converting the power mode to the first power mode. The method further includes: in response to determining that the start button is operated in the off mode or the first power mode and the brake is operated, converting the power mode to the second power mode. The method further includes: in response to determining that a first set time has passed in the first power mode, converting the power mode to the off mode. The first power mode is a mode in which power is applied to at least one convenience device, and the second power mode is a mode in which power is applied to at least one essential driving device.

[0009] In at least one embodiment of the present disclosure, the method may further include: converting, by the controller, the power mode to the off mode in response to determining that the start button is operated before a first set time has passed in the first power mode.

[0010] In at least one embodiment of the present disclosure, the method may further include: by a controller, in response to determining that the shift lever is not in the P gear or the start button is operated during driving, converting the power mode from the second power mode to the first power mode.

[0011] In at least one embodiment of the present disclosure, the method may further include: by the controller, in response to determining that the third power mode is selected through a user setting menu of the user interface in the first power mode or the second power mode, converting the power mode to a third power mode. The third power mode is a mode in which power is applied to the at least one convenience device.

[0012] In at least one embodiment of the present disclosure, the method may further include: outputting, by the controller, a pop-up window requesting the user to select conversion to the third power mode through the user interface before the first set time elapses.

[0013] In at least one embodiment of the present disclosure, the method may further include: in response to determining that a state of charge (SOC) of the high voltage battery is equal to or greater than a first set SOC, automatically converting the power mode to a third power mode.

[0014] In at least one embodiment of the present disclosure, the method may further include: outputting, by the controller, a warning message through a user interface in response to determining that the SOC of the high voltage battery reaches the second set SOC in the third power mode.

[0015] In at least one embodiment of the present disclosure, the method may further include: by the controller, in response to determining that the brake and the start button are operated in the third power mode, converting the power mode to the second power mode.

[0016] In at least one embodiment of the present disclosure, when the second set time has passed, in response to recognizing that the digital key is in the electric vehicle, the third power mode is converted to the second power mode. When the second set time has not passed, the conversion is performed without recognizing that the digital key is in the electric vehicle.

[0017] In at least one embodiment of the present disclosure, in response to determining that the first power mode is converted to the third power mode, a second set time is counted from the first power mode. In response to determining that the second power mode is converted to the third power mode, a second set time is counted from the third power mode.

[0018] In at least one embodiment of the present disclosure, the method may further include: by a controller, in response to determining that a start button is operated during driving in the second power mode, converting the power mode to the first power mode and converting the shift lever to the P gear, and converting the first power mode to the off mode.

[0019] In at least one embodiment of the present disclosure, converting the power mode to the second power mode includes: when a second set time has passed since the start of the first power mode, in response to recognizing that the digital key is in the electric vehicle, converting the power mode to the second power mode. Converting the power mode to the second power mode further includes: when the second set time has not passed, converting the power mode to the second power mode without recognizing that the digital key is in the electric vehicle.

[0020] In at least one embodiment of the present disclosure, the method may further include: outputting a warning message through a controller in at least one of the following situations: in the first situation, when the shift lever is not in the P gear in the second power mode, switching to a closing mode or opening the door is performed according to an operation request of a start button; in the second situation, when the shift lever is not in the P gear in the first power mode, switching to the second power mode is performed through an operation request of a start button; and in the third situation, when the shift lever is not in the P gear, switching to the second power mode is performed through an operation request of a brake and a start button.

[0021] According to an embodiment of the present disclosure, an electric vehicle includes: a start button; a high-voltage battery; at least one driving essential device configured to receive power from the high-voltage battery; at least one convenience device configured to receive power from the high-voltage battery; and a controller configured to convert a power mode to one of an off mode, a first power mode, and a second power mode. The first power mode is a mode in which power is applied to at least one convenience device, and the second power mode is a mode in which power is applied to at least one driving essential device. The controller is further configured to: in response to determining that the start button is operated once in the off mode, convert the power mode to the first power mode. The controller is further configured to: in response to determining that the start button is operated in the off mode or the first power mode and the brake is operated, convert the power mode to the second power mode. The controller is further configured to: in response to determining that a first set time has passed in the first power mode, convert the power mode to the off mode.

[0022] In at least one embodiment of the present disclosure, the controller is further configured to convert the power mode to the off mode in response to determining that the start button is operated before a first set time has passed in the first power mode.

[0023] In at least one embodiment of the present disclosure, the controller is further configured to: in response to determining that the shift lever is not in the P gear or the start button is operated during driving, switch the power mode from the second power mode to the first power mode.

[0024] In at least one embodiment of the present disclosure, the controller is further configured to: in response to determining that the third power mode is selected through a user setting menu of the user interface in the first power mode or the second power mode, convert the power mode to a third power mode. The third power mode is a mode in which power is applied to the at least one convenience device.

[0025] In at least one embodiment of the present disclosure, the controller may output a pop-up window requesting the user to select conversion to the third power mode through the user interface before the first set time elapses.

[0026] In at least one embodiment of the present disclosure, the controller is further configured to automatically convert the power mode to the third power mode in response to determining that the state of charge (SOC) of the high voltage battery is equal to or greater than a first set SOC.

[0027] In at least one embodiment of the present disclosure, the controller is further configured to: in response to determining that the SOC of the high voltage battery reaches the second set SOC in the third power mode, output a warning message through the user interface.

[0028] The methods and apparatus of the present disclosure have other features and advantages which shall be apparent from or set forth in more detail in the accompanying drawings and the following detailed description, which together serve to explain certain principles of the present disclosure.

[0029] According to the embodiments of the present disclosure, the power mode in an electric vehicle can be further simplified, and excessive battery consumption in such a simplified power mode system can be prevented.

[0030] In addition, a control method for efficiently switching a power mode by adding a utility mode in an electric vehicle can be provided.

[0031] In addition, the electric mode can be switched to the off mode during driving or when the shift lever is not in the P position. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a conceptual diagram showing a main configuration of an electric vehicle according to an embodiment of the present disclosure.

[0033] Figure 2 A conversion state of a power mode according to an embodiment of the present disclosure is shown.

[0034] Figure 3 A pop-up window for utility mode switching is shown.

[0035] Figure 4 A standby state control process in a first power mode according to an embodiment of the present disclosure is shown.

[0036] Figure 5 It is shown that a warning message is output to a driver by checking a battery state of charge (SOC) according to an embodiment of the present disclosure.

[0037] Figure 6 A control process of switching to the off mode during driving or in a gear state other than the P gear according to an embodiment of the present disclosure is shown.

[0038] It is to be understood that the drawings are not necessarily drawn to scale, presenting slightly simplified representations of various features illustrating the basic principles of the present disclosure. The specific design features of the present disclosure, including, for example, specific dimensions, directions, positions, and shapes, included herein should be determined in part according to the specific intended application and use environment.

[0039] In the drawings, like reference numerals refer to the same or equivalent parts of the present disclosure throughout the several figures of the drawing. DETAILED DESCRIPTION

[0040] Since various modifications can be made to the present disclosure and various embodiments are possible, specific embodiments are illustrated in the drawings and described in the present disclosure. However, the specific embodiments are not intended to limit the present disclosure to the specific embodiments, but should be understood to include all changes, equivalents or alternatives included in the spirit and technical scope of the present disclosure.

[0041] The suffixes "module" and "section" used herein are used only for name distinction between components and should not be interpreted as having a premise of physical and chemical classification or separation.

[0042] Terms including ordinal numbers such as "first" and "second" may be used to explain various components, but the components are not limited by these terms. These terms may only be used in the names to distinguish one component from another, and the order between them is identified by the context of the description rather than by the names.

[0043] The term "and / or" is used to include all cases of any combination of plural items subject to the target constraint. For example, "A and / or B" refers to all three cases of "A", "B", "A and B".

[0044] When a component is referred to as being “connected” or “linked” to another component, the component may be directly connected or linked to the other component, but it should be understood that there may be another component therebetween.

[0045] The terms used in this disclosure are used to explain specific embodiments and are not intended to limit the disclosure. Singular terms in this disclosure include plural terms unless they are clearly expressed in the context in singular form. In this disclosure, terms such as "including" or "having" are intended to indicate the presence of features, numbers, steps, operations, components or parts described in this disclosure, or combinations thereof. It should be understood that the presence or possibility of adding numbers, steps, operations, components, parts or combinations thereof is not excluded in advance.

[0046] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as those commonly understood by ordinary technicians in the technical field to which the present disclosure belongs. Terms such as commonly used terms in dictionaries should be interpreted as having the meaning of the relevant technical context, and unless clearly defined in the present disclosure, they are not interpreted as ideal or overly formal meanings.

[0047] In addition, "unit", "control unit", "control device" or "controller" are terms widely used as names of devices that control functions, and do not represent general functional units. For example, a device using one of the above names may include a communication device that communicates with another controller or sensor to control a function, a recording medium that can be read by a computer and stores an operating system, logic commands, input and output information, etc., and one or more processors that perform judgments, operations, and decisions required for function control.

[0048] In addition, the processor may include a semiconductor integrated circuit and / or an electronic device that performs at least one or more of comparison, judgment, operation, and decision-making to implement a programmed function. For example, the processor may be any one or a combination of a computer, a microprocessor, a CPU, an ASIC, and an electronic circuit (circuit, logic circuit).

[0049] In addition, the computer-readable recording medium (or simply storage) includes various storage devices that can be read by the computer system. For example, the storage medium may include at least one of a flash memory, a hard disk storage, a micro memory, a card storage, a secure digital (SD) card, an extreme digital (XD) card, a random access memory (RAM), a static RAM, a read-only memory (ROM), a programmable ROM (PROM), an electrically erasable PROM (EEPROM), a magnetic RAM (MRAM), a magnetic disk storage, or an optical disk storage.

[0050] Such a recording medium may be electrically connected to a processor, and the processor may load and record data from the recording medium. The recording medium and the processor may be integrated or physically separated.

[0051] Hereinafter, embodiments of the present disclosure are described in detail with reference to the accompanying drawings.

[0052] Figure 1 is a conceptual diagram showing a main configuration of an electric vehicle according to an embodiment of the present disclosure, Figure 2 A conversion state of a power mode according to an embodiment of the present disclosure is shown.

[0053] The electric vehicle according to the present embodiment includes a start button (SSB), a high-voltage battery (HVB), a driving essential device that receives power from the high-voltage battery (HVB), a convenience device that receives power from the high-voltage battery (HVB), and a controller that converts a power mode into one of an off mode, a first power mode, and a second power mode.

[0054] In addition, the electric vehicle includes a DC / DC converter (LDC) that converts power of a high voltage battery (HVB) into low voltage power and then supplies it to electronic devices including driving essential devices and convenience devices.

[0055] The high voltage battery (HVB) may include a plurality of battery cells, and the unit voltage output by the battery cells is between 2.7V and 4.2V. The high voltage battery (HVB) may further include a module formed by connecting a predetermined number of battery cells in series or in parallel. The high voltage battery HVB may have the following form: Because the battery modules are connected in series or in parallel, one or more battery modules are packaged as a battery pack to output a voltage of, for example, about 400V, about 800V, or several thousand volts.

[0056] The high voltage battery (HVB) may include a battery management system BMS, which may include a battery management unit (BMU), a cell monitoring unit (CMU), and a battery junction box (BJB).

[0057] BMS performs cell balancing functions to ensure the performance of the entire battery pack by continuously maintaining the voltage of each cell; performs state of charge (SOC) functions, which calculate the capacity of the entire battery system; performs battery cooling, charging and discharging control, etc.

[0058] The BMU receives information of all cells from the CMU and performs the functions of the BMS based on the information.

[0059] The BMU may include two micro control units (MCUs), each MCU having a CAN communication port. A CAN interface may be included for communicating with a vehicle controller that may correspond to a superior device of the BMS, and a CAN interface may be included for collecting information of a CMU that may correspond to a subordinate device of the BMS.

[0060] The CMU can be directly attached to the battery cell to sense voltage, current, temperature, etc. The CMU does not perform operations related to the BMS algorithm and can only perform sensing. Multiple battery cells can be connected to one CMU, and the information of each cell is transmitted to the BMU via the CAN interface.

[0061] The BJB is the battery pack level detection mechanism of the BMS and the connection medium between the high voltage battery (HVB) and the powertrain. It measures and records the battery voltage and the current flowing in and out of the battery to accurately calculate the SOC. In addition, the BJB can perform important safety functions such as overcurrent detection and insulation monitoring.

[0062] The essential driving devices are necessary for driving the vehicle and may vary depending on the type of vehicle. In an embodiment, the essential driving devices may include a power domain controller (PDC), a motor control unit (MCU), a motor-driven power steering (MDPS), an integrated electric brake (IEB), a vehicle control unit (VCU), an electric power control unit (EPCU), an electric oil pump (EOP), a headlight, a turn signal, a brake light, a wiper, an instrument panel (instrument cluster), a door unlocking device and / or a body domain controller (BDC), etc.

[0063] Here, the PDC controls a high voltage battery (HVB) and / or a DC / DC converter (LDC) according to an input command to supply power to various electronic devices.

[0064] The MCU controls the drive motor according to the input command.

[0065] MDPS refers to a power steering system in which a motor is connected to a steering shaft connected to the front wheels of a vehicle so that the steering wheel of the vehicle can be turned with a small force.

[0066] IEB stands for Integrated Electric Brake.

[0067] In addition, the VCU performs drive motor control, regenerative braking control, air conditioning load control, electronic load power supply control, combination instrument display, remaining drivable distance (DTE), scheduled / remote charging / air conditioning and / or analog / digital signal processing and diagnosis, etc.

[0068] EPCU is a device that controls the overall movement of the vehicle while controlling the drive motor in an electric vehicle. The functions of EPCU are similar to those of the electronic control unit (ECU) and transmission control unit (TCU) of existing internal combustion engine vehicles.

[0069] EOP is a device responsible for cooling and lubrication of the reducer.

[0070] BDC refers to a platform controller that provides electronic functions for the vehicle body area. BDC performs at least one of the following functions: body control function, digital key access / start function, tire pressure monitoring function, anti-theft function, or digital key verification and autonomous parking control function.

[0071] The digital key can be a FOB key, or it can be registered on a smartphone or NFC card and used as a mobile key or card key.

[0072] In the present embodiment, the BDC functions as a controller for switching the power mode, but the embodiment is not necessarily limited thereto.

[0073] The BDC outputs a command to the junction block according to the power mode, and the junction block operates the relay according to the command to enable power supply in the corresponding power mode.

[0074] On the other hand, the convenience devices are not essential for driving and include electronic devices related to driver convenience, a representative example of which is audio video navigation (AVN).

[0075] In addition, the start button (SSB) includes a mechanical or electronic (eg, touch-sensitive) button provided in the vehicle.

[0076] Reference Figure 2 In this embodiment, the power mode includes an off mode, a first power mode, a second power mode, and a third power mode.

[0077] In this embodiment, the first power mode is named "power-on" mode, the second power mode is named "EV READY" or "READY" mode, and the third power mode is named utility mode, but this embodiment is not limited to the names of the power modes.

[0078] The power-on mode is a mode in which power is applied to the convenience devices, and the EV READY mode is a mode in which power is applied to all electronic devices in the vehicle including devices essential for driving and convenience devices.

[0079] When the BDC decides to switch to the EV READY mode, the BDC may transmit an EV READY request to the VCU, and the VCU accordingly switches the state to a control mode in which the vehicle can be started at any time.

[0080] On the other hand, even in the power-on mode, power may be applied to all electronic devices in the circuit, but since the EV READY request is not transmitted to the VCU, the vehicle cannot be started immediately.

[0081] The utility mode is a mode in which power is applied to the convenience device. The utility mode is different from the power-on mode in that the utility mode can be selected through a user setting menu provided by a user interface, which is described below, and there is no off mode transition according to a set time, which is described below.

[0082] In the following, reference is made to Figure 2 Describes the switching between each mode in detail.

[0083] First, when the start button (SSB) is pressed once in the off mode, that is, the start button (SSB) is operated once, the power mode is converted to the power-on mode.

[0084] In addition, when the brake is operated in the OFF mode or the energizing mode and the start button (SSB) is operated at the same time, the electric mode switches to the EV READY mode.

[0085] When the start button (SSB) is operated in the power-on mode or the first set time has passed, the power mode is switched to the off mode. In other words, if the start button (SSB) is operated before the first set time has passed, the mode is switched to the off mode, and if the first set time has passed without operating the start button (SSB), the mode is automatically switched to the off mode.

[0086] Reference Figure 3 At this time, a pop-up window (PW) requesting the user to select whether to switch to the practical mode before the first set time elapses may be displayed through the AVN screen (SC) providing the user interface.

[0087] When the user selects to switch to the utility mode through the pop-up window (PW), the power mode is switched accordingly. At this time, if the user does not select after the first set time, the power mode is switched to the off mode as described above.

[0088] In the EV READY mode, when the shift lever is placed in the parking position, ie, the P position, and the start button (SSB) is operated when the vehicle is below a set speed (eg, 5 kph) or stopped, the electric mode is switched to the off mode.

[0089] In EV READY mode, if the shift lever is not in the P position or the start button (SSB) is operated while the vehicle is running, the electric mode switches to the energizing mode.

[0090] The user may select the utility mode through a user setting menu provided by the AVN screen, and the power mode is accordingly switched from the power-on mode or the EV READY mode to the utility mode.

[0091] Additionally, in addition to such user selection, if the state of charge (SOC) of the high voltage battery (HVB) is equal to or greater than a first set SOC, the power mode may be automatically switched to the utility mode.

[0092] In utility mode, unlike power-up mode, there is no time limit like the first setting time.

[0093] However, due to long-term use, the SOC of the high-voltage battery (HVB) may become insufficient. As a countermeasure, a warning message may be output on the AVN screen when the SOC of the high-voltage battery (HVB) reaches the second set SOC.

[0094] When the brake and start button (SSB) are operated in the utility mode, the electric mode switches to the EV READY mode.

[0095] In addition, in the utility mode, when the start button (SSB) is operated without operating the brake or by selection of the user setting menu, the electric mode is switched to the off mode.

[0096] The condition for switching from the OFF mode to the POWER mode and the EV READY mode is that the digital key is recognized as being present in the vehicle.

[0097] In addition, when switching from the power-on mode to the EV READY mode or from the utility mode to the EV READY mode, the digital key is not required as long as it is within the second set time. However, after the second set time has passed, the condition for switching from the power-on mode to the EV READY mode or from the utility mode to the EV READY mode is that the digital key is present in the vehicle.

[0098] Here, when switching from the utility mode to the EV READY mode, the second set time is counted from the power-on mode when switching from the power-on mode to the utility mode, and when switching from the EV READY mode to the utility mode, the second set time is counted from the utility mode.

[0099] When the power-on mode is switched to the EV READY mode, the second set time is counted from the start of the power-on mode.

[0100] On the other hand, in the case where the start button (SSB) is operated and a switch to the off mode is requested or the door is opened when the shift lever is not in the P range in EV READY mode, in the case where the start button (SSB) is operated and a switch to the EV READY mode is requested when the shift lever is not in the P range in power-on mode, or in the case where the brake and start button (SSB) is operated and a switch to the EV READY mode is requested when the shift lever is not in the P range.

[0101] Figure 4 The standby state control process in the power-on mode is shown and the process is described in detail below.

[0102] First, when entering the power-on mode ( S10 ), a timer operation is started in step S20 .

[0103] When the timer reaches 14 minutes, that is, 1 minute before the first set time (eg, 15 minutes), a popup window (PW) inquiring about switching to the utility mode is output through the AVN screen in step S30.

[0104] If the user chooses to switch to the utility mode in the pop-up window (PW) (“Yes” in S30 ), the utility mode is entered in step S40 .

[0105] If the user chooses not to switch to the utility mode in the pop-up window (PW) (“No” in S30 ), the process returns to step S20 and continues to run the timer.

[0106] As an example of the first set time in step S20, when 15 minutes have passed, the standby mode is canceled in step S80, and as described above, since the first set time has passed, the mode is switched to the off mode.

[0107] When charging of the electric vehicle starts in step S20 , the timer operation is canceled in step S60 .

[0108] In addition, if the utility mode is selected through the AVN user setting menu in step S20, the utility mode is entered (S40).

[0109] The timer operation in step S20 is canceled in step S60 by the decision ( S50 ) as to whether to enter the utility mode or charge the electric vehicle.

[0110] On the other hand, if the brake is operated before 15 minutes have passed after the power-on mode is started in step S20, the timer is suspended in step S70. At this time, when the brake is released, it returns to step S20 and continues to run the timer.

[0111] If the utility mode is selected through the AVN user setting menu in step S70, the utility mode is entered (S40). In addition, when charging of the electric vehicle starts in step S70, the timer operation is canceled in step S60.

[0112] On the other hand, referring to Figure 5 , if the SOC of the high voltage battery (HVB) is lower than the set value, a warning message about using the utility mode may be output on the AVN screen. This may be performed after step S30. In other words, a warning message may be output before entering the utility mode after step S30. Figure 5 Warning message shown.

[0113] Figure 6 The control process of switching to the off mode during driving or in a gear state other than the P range is shown.

[0114] First, if the user attempts to switch to the off mode in the EV READY mode or the power-on mode ( S110 ), the gear position of the shift lever and the vehicle speed information are determined in step S120 .

[0115] In addition, if, as a result of the determination, the shift lever is in the P range and the vehicle speed is less than a set vehicle speed (eg, 5 kph), the off mode is entered in step S130.

[0116] If the shutdown mode is determined, a command for the relay switch is output to the wiring block. The wiring block controls the relay according to the command and switches to the power supply state in the shutdown mode.

[0117] On the other hand, if the shift lever is not in the P range or the vehicle speed is equal to or greater than the set vehicle speed (e.g., 5 kph) as a result of the determination in step S120, the EV READY mode is determined in step S140, and an EV READY mode off request is transmitted to the VCU. In step S150, the VCU turns off the EV READY mode and attempts to shift to the P range of the transmission gear.

[0118] In addition, when the EV READY mode is turned off in step S160 , the VCU transmits information about the state to the BDC, the BDC enters the power-on mode in step S180 , and determines the position of the transmission gear in step S190 .

[0119] At this time, if a restart is attempted in step S180 , that is, when the driver steps on the brake and operates the start button (SSB), the EV READY mode is re-entered in step S200 .

[0120] On the other hand, when the shifting of the transmission range to the P range is completed in step S170, the VCU notifies the BDC of information about the shifting.

[0121] When the BDC enters the power-on mode in step S180 or receives a notification of shifting to the P range from the VCU, the BDC determines the position of the transmission range in step S190 .

[0122] In step S190 , if the transmission gear is in the P gear, the shutdown mode is entered in step S210 , and if the transmission gear is not in the P gear, the EV READY mode is re-entered in step S200 .

[0123] And, after steps S200 and S210 , the output of the EV READY mode off request sent to the VCU is stopped in step S220 .

Claims

1. A power control method for an electric vehicle, the electric vehicle comprising a start button, a high voltage battery, at least one driving essential device receiving power from the high voltage battery, at least one convenience device receiving power from the high voltage battery, and a controller converting a power mode into one of an off mode, a first power mode, and a second power mode, the method comprising: By the controller, in response to determining that the start button is operated once in the off mode, converting the power mode to the first power mode; In response to determining that the start button is operated and a brake is operated in the off mode or the first power mode, converting the power mode to the second power mode; as well as In response to determining that a first set time has elapsed in the first power mode, converting the power mode to the off mode, wherein the first power mode is a mode in which power is applied to the at least one convenience device, and The second power mode is a mode in which power is applied to the at least one driving-essential device.

2. The method according to claim 1, further comprising: By the controller, in response to determining that the start button is operated before the first set time elapses in the first power mode, the power mode is converted to the off mode.

3. The method according to claim 1, further comprising: By the controller, in response to determining that the start button is operated in a state where the shift lever is not in a parking position (P position) or during driving, the power mode is switched from the second power mode to the first power mode.

4. The method according to claim 1, further comprising: By the controller, in response to determining that a third power mode is selected through a user setting menu of a user interface in the first power mode or the second power mode, converting the power mode to the third power mode, Herein, the third power mode is a mode in which power is applied to the at least one convenience device.

5. The method according to claim 4, further comprising: The controller outputs a pop-up window requesting the user to select conversion to the third power mode through the user interface before the first set time elapses.

6. The method according to claim 4, further comprising: In response to determining that the state of charge (SOC) of the high voltage battery is equal to or greater than a first set SOC, the power mode is automatically switched to the third power mode.

7. The method according to claim 4, further comprising: By the controller, in response to determining that the SOC of the high voltage battery reaches a second set SOC in the third power mode, a warning message is output through the user interface.

8. The method according to claim 4, further comprising: By the controller, in response to determining that the brake and the start button are operated in the third power mode, the power mode is converted into the second power mode.

9. The method according to claim 8, wherein: When a second set time has elapsed, in response to recognizing that the digital key is within the electric vehicle, performing conversion of the third power mode to the second power mode, and When the second set time has not elapsed, the switching is performed without recognizing that the digital key is in the electric vehicle.

10. The method according to claim 9, wherein: In response to determining that the first power mode is converted to the third power mode, counting the second set time from the start of the first power mode, and In response to determining that the second power mode is converted to the third power mode, the second set time is counted from the start of the third power mode.

11. The method according to claim 1, further comprising: By the controller, in response to determining that the start button is operated during driving in the second power mode, the power mode is switched to the first power mode and the shift lever is switched to the P range, and the first power mode is switched to the off mode.

12. The method according to claim 1, wherein: Converting the power mode to the second power mode includes: switching the power mode to the second power mode in response to recognizing that a digital key is within the electric vehicle when a second set time has elapsed from the start of the first power mode; and When the second set time has not elapsed, the power mode is switched to the second power mode without recognizing that the digital key is in the electric vehicle.

13. The method according to claim 1, further comprising: The controller outputs a warning message in at least one of the following situations: in the first situation, when the shift lever is not in the parking position, i.e., the P gear, in the second power mode, the vehicle is switched to the closing mode or the door is opened according to the operation request of the start button; in the second situation, when the shift lever is not in the P gear in the first power mode, the vehicle is switched to the second power mode according to the operation request of the start button; And in a third situation, when the shift lever is not in the P range, the mode is switched to the second electric power mode by operating the brake and the start button.

14. An electric vehicle comprising: Start button; High voltage battery; at least one essential driving device receiving power from the high voltage battery; at least one convenience device that receives power from the high voltage battery; as well as a controller, converting the power mode into one of an off mode, a first power mode, and a second power mode, wherein the first power mode is a mode in which power is applied to the at least one convenience device, The second power mode is a mode in which power is applied to the at least one driving essential device, and The controller further: In response to determining that the start button is operated once in the off mode, converting the power mode to the first power mode, In response to determining that the start button is operated and the brake is operated in the off mode or the first power mode, converting the power mode to the second power mode, and In response to determining that a first set time has elapsed in the first power mode, the power mode is converted to the off mode.

15. The electric vehicle according to claim 14, wherein: The controller further converts the power mode to the off mode in response to determining that the start button is operated before the first set time elapses in the first power mode.

16. The electric vehicle according to claim 14, wherein: The controller further switches the electric power mode from the second electric power mode to the first electric power mode in response to determining that the start button is operated when the shift lever is not in the parking position (P position) or during driving.

17. The electric vehicle according to claim 14, wherein: The controller further: in response to determining that a third power mode is selected through a user setting menu of a user interface in the first power mode or the second power mode, converts the power mode to the third power mode, and The third power mode is a mode in which power is applied to the at least one convenience device.

18. The electric vehicle according to claim 17, wherein: The controller further outputs a pop-up window requesting the user to select conversion to the third power mode through the user interface before the first set time elapses.

19. The electric vehicle according to claim 17, wherein: The controller further automatically converts the power mode to the third power mode in response to determining that the state of charge (SOC) of the high voltage battery is equal to or greater than a first set SOC.

20. The electric vehicle according to claim 17, wherein: The controller further outputs a warning message through the user interface in response to determining that the SOC of the high-voltage battery reaches a second set SOC in the third power mode.

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