Vehicle and control method thereof

Abstract

The present invention provides a vehicle and a control method thereof, wherein the vehicle can lock / unlock a door through a remote controller even when a main battery of the vehicle cannot supply power normally. A vehicle includes: a door locking device configured to lock / unlock a door; and a controller configured to: drive the door locking device using power from a first battery, charge a second battery using power from the first battery, and drive the door locking device using power from the second battery when power is not supplied from the first battery.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the priority of Korean Patent Application No. 10-2020-0083093 filed on July 6, 2020 in the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present invention relates to a vehicle, and to locking / unlocking of a door locking device of the vehicle. Background Art

[0004] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.

[0005] The vehicle remote controller includes a vehicle key fob or a mobile communication terminal equipped with various functions. The user can unlock the vehicle doors and luggage compartment and start the engine using the remote controller. The remote key type remote controller allows the user to perform the above various operations only by carrying the remote controller, which is based on wireless communication between the vehicle and the remote controller.

[0006] In order to use the remote controller, it is necessary to ensure power for driving related devices, including communication between the vehicle and the remote controller, user authentication, and electric driving of the door locking device. Summary of the invention

[0007] The present invention provides a vehicle capable of locking / unlocking vehicle doors by a remote controller even when a main battery of the vehicle cannot normally supply power.

[0008] According to one aspect of the present invention, a vehicle includes: a door locking device configured to perform locking / unlocking of a door; and a controller configured to drive the door locking device using power from a first battery, charge a second battery using power from the first battery, and drive the door locking device using power from the second battery when power is not supplied from the first battery.

[0009] The controller may include: a first controller configured to drive a door locking device using power from a first battery when power is supplied from the first battery; and a second controller configured to control charging of a second battery when power is supplied from the first battery, and to control driving of the door locking device when power is not supplied from the first battery.

[0010] The vehicle may further include: a related controller configured to perform communication with a remote controller configured to remotely lock / unlock a door locking device, and the related controller may be configured to receive power from the first battery when power is supplied from the first battery, and to receive power from the second battery when power is not supplied from the first battery.

[0011] The controller may be configured to control power supplied to the relevant controller and user authentication by performing boost control of the second battery in response to an emergency operation signal generated when power is not supplied from the first battery.

[0012] The door locking device may include a door latch configured to mechanically operate by a driving force of a motor to participate in locking / unlocking of the door, and the motor may be configured to be driven by power of a first battery or power of a second battery.

[0013] According to one aspect of the present invention, a control method for a vehicle includes a door locking device configured to perform locking / unlocking of a door, the method comprising: driving the door locking device using power from a first battery; charging a second battery using power from the first battery; and driving the door locking device using power from the second battery when power is not supplied from the first battery.

[0014] The vehicle may further include a related controller configured to communicate with a remote controller configured to remotely lock / unlock a door locking device, and the control method may further include: when power is supplied from the first battery, supplying power from the first battery to the related controller, and when power is not supplied from the first battery, supplying power from the second battery to the related controller.

[0015] The vehicle may further include a door latch configured to be mechanically operated by a driving force of a motor to participate in locking / unlocking of the door, and the motor may be configured to be driven by power of the first battery or power of the second battery.

[0016] According to one aspect of the present invention, a vehicle includes: a door locking device configured to perform locking / unlocking of a door; and a controller configured to drive the door locking device using power from a first battery, determine a target charge amount of the second battery based on a state of charge of the first battery when a second battery is charged using power from the first battery, and drive the door locking device using power from the second battery when power is not supplied from the first battery.

[0017] The controller may be configured to: increase the target charge capacity of the second battery as the charge state of the first battery decreases; and decrease the target charge capacity of the second battery as the charge state of the first battery increases.

[0018] The controller may be configured to determine the target charge capacity of the second battery by applying a minimum reference value among a plurality of preset reference values ​​when an engine of the vehicle is turned on.

[0019] The controller may include: a first controller configured to drive a door locking device using power from a first battery when power is supplied from the first battery; and a second controller configured to control charging of a second battery when power is supplied from the first battery, and to control driving of the door locking device when power is not supplied from the first battery.

[0020] The vehicle may further include: a related controller configured to perform communication with a remote controller set to remotely lock / unlock a door locking device, and the related controller may be configured to: receive power from the first battery when power is supplied from the first battery, and receive power from the second battery when power is not supplied from the first battery.

[0021] The controller may be configured to control power supplied to the relevant controller and authenticate a user by performing a voltage boost control of the second battery in response to an emergency operation signal generated when power is not supplied from the first battery.

[0022] The door locking device may include a door latch configured to mechanically operate by a driving force of a motor to participate in locking / unlocking of the door, and the motor may be configured to be driven by power of a first battery or power of a second battery.

[0023] According to one aspect of the present invention, a control method for a vehicle includes a door locking device configured to perform locking / unlocking of a door, the method comprising: driving the door locking device using electricity from a first battery, and when charging a second battery using electricity from the first battery, determining a target charge amount of the second battery based on the power state of the first battery; and driving the door locking device using electricity from the second battery when no electricity is supplied from the first battery.

[0024] Determining the target charge capacity may include: increasing the target charge capacity of the second battery as the charge state of the first battery decreases; and decreasing the target charge capacity of the second battery as the charge state of the first battery increases.

[0025] Determining the target charge capacity may include determining the target charge capacity of the second battery by applying a minimum reference value among a plurality of preset reference values ​​when an engine of the vehicle is turned on.

[0026] The vehicle may further include a related controller configured to communicate with a remote controller configured to remotely lock and unlock a door locking device, and the control method may further include: when power is supplied from the first battery, supplying power from the first battery to the related controller, and when power is not supplied from the first battery, supplying power from the second battery to the related controller.

[0027] The control method may further include controlling power supplied to the relevant controller and authenticating a user by performing boost control of the second battery in response to an emergency operation signal generated when power is not supplied from the first battery.

[0028] Further areas of applicability will become apparent from the description provided herein.It should be understood that the description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order that the present invention may be better understood, various embodiments of the present invention will be described by way of example with reference to the accompanying drawings, in which:

[0030] These and / or other aspects of the present invention will become apparent and more readily understood through the following description of various embodiments of the present invention in conjunction with the accompanying drawings, in which:

[0031] Figure 1 is a schematic diagram showing a vehicle according to one embodiment of the present invention;

[0032] Figure 2 is a schematic diagram showing a control system of a vehicle according to an embodiment of the present invention;

[0033] Figure 3 is a schematic diagram showing the operation of a control system when a main battery of a vehicle is operating normally according to an embodiment of the present invention;

[0034] Figure 4 is a schematic diagram showing the operation of a control system when a main battery of a vehicle does not operate normally according to an embodiment of the present invention;

[0035] Figure 5 is a schematic diagram showing a method for charging a backup battery of a vehicle according to an embodiment of the present invention;

[0036] Figure 6 is a schematic diagram showing charging of a backup battery of a vehicle according to an embodiment of the present invention; and

[0037] Figure 7is a schematic diagram illustrating a vehicle control method when a main battery of the vehicle does not function normally according to an embodiment of the present invention.

[0038] The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. DETAILED DESCRIPTION

[0039] The following description is merely exemplary in nature and is not intended to limit the invention, its application, or uses. It should be understood that throughout the drawings, corresponding reference numerals indicate the same or corresponding components and features.

[0040] Figure 1 is a schematic diagram showing a vehicle according to an embodiment of the present invention. Figure 1 The vehicle 100 shown in FIG. 1 has the following structure in appearance.

[0041] The windshield 112 is provided at the front upper part of the main body 110 to provide a front view to the passengers inside the vehicle 100 and protect the passengers from airflow. The exterior rearview mirrors 114 provide the passengers with a side and rear view of the vehicle 100. One exterior rearview mirror 114 may be provided on each of the left and right doors 190.

[0042] The door 190 is rotatably provided on the left and right sides of the main body 110, and when the door 190 is opened, the occupants can enter and leave the vehicle, and when the door 190 is closed, the interior of the vehicle 100 can be isolated from the outside. The door 190 can be locked / unlocked using a door locking device 192. The locking / unlocking of the door locking device 192 can include a method in which a user approaches the vehicle 100 and directly operates a button or handle of the door locking device 192, and a method in which the user remotely locks / unlocks using a remote controller 172, 174, etc. at a location away from the vehicle 100. The door locking device 192 includes a door latch that mechanically participates in locking / unlocking the door 190, and the door latch is driven by a motor. That is, when power is supplied to the motor and the motor rotates, the door latch mechanically moves to lock or unlock the door 190.

[0043] The antenna 152 is used to receive telematics, such as broadcast / communication signals of DMB, digital TV, and GPS. The antenna 152 may be a multifunctional antenna for receiving various types of broadcast / communication signals, or may be a single-function antenna for receiving any one type of broadcast / communication signal.

[0044] The front wheels 122 and the rear wheels 124 are located at the front and rear of the vehicle 100, respectively, and are configured to rotate by receiving power from an engine (not shown). The remote controller 174 is a device through which a user can remotely control the vehicle 100 through an application (also referred to as an "APP") installed on the mobile communication terminal 174. In addition, the remote controller 172 may be a vehicle remote control key 172 equipped with various functions. The user can unlock the doors and luggage compartment of the vehicle 100 and start the engine by utilizing the remote controllers 172 and 174. The remote control key type remote controller 172 allows the user to perform the above-mentioned various operations only by carrying the remote controller 172, which is based on wireless communication between the vehicle 100 and the remote controller 172. The mobile communication terminal type remote controller 174 allows the user to perform the above-mentioned various operations through an application installed in the mobile communication terminal and short-range communication (e.g., NFC technology). The remote control key type remote controller 172 can use the vehicle 100 only when the user carries the remote control key type remote controller 172. However, since it is impossible to prepare a large number of remote key type remote controllers 172 for one vehicle 100, it has played a limiting role in car sharing in which multiple users share the vehicle 100. In contrast, since the remote controller 174 in the form of a mobile communication terminal performs various operations of the vehicle 100 through an application and short-range communication technology, anyone who has a mobile communication terminal can use the vehicle 100 through user authentication. Therefore, in terms of car sharing, it is no longer necessary to ensure a large number of remote key type remote controllers 172. However, we have found that in order to use the remote controllers 172, 174, power for driving related devices should be ensured, including communication between the vehicle 100 and the remote controllers 172 and 174, user authentication, and electric driving of the door locking device 192.

[0045] Therefore, in one embodiment of the present invention, a method for storing a battery even in a main battery (first battery) of a vehicle 100 (see Figure 2 When the power supply 206 in FIG. 206 cannot be supplied normally, a backup battery and a control method thereof can be provided for locking / unlocking the doors 190 of the vehicle 100 through the remote controllers 172 and 174.

[0046] Figure 2 1 is a schematic diagram showing a control system of a vehicle according to an embodiment of the present invention. Even in the case where the main battery 204 of the vehicle 100 cannot supply power normally, Figure 2 The control system of the vehicle 100 shown in FIG. 1 is also used to lock / unlock the doors 190 of the vehicle 100 via remote controllers 172 and 174 .

[0047] The integrated controller 202 receives a request from another controller and generates an output signal for operating a desired function after processing by the control logic of the integrated controller 202 itself. When a door lock / unlock request of the vehicle 100 according to one embodiment of the present invention occurs, the integrated controller 202 controls the power required for door lock / unlock to be supplied from the main battery 204 or the backup battery (second battery) 206 according to the state of the main battery 204.

[0048] The integrated controller 202 of the vehicle 100 according to one embodiment of the present invention includes a first controller (ICUMCU) 208 and a second controller (DKEA MCU, digital key emergency access MCU) 210. When a door lock / unlock request of the vehicle 100 according to the present invention is generated, the first controller 208 controls to supply the power required for door lock / unlock from the main battery 204. When power cannot be supplied from the main battery 204, the first controller 208 cooperates with the second controller 210 to provide the emergency power required for door lock / unlock from the backup battery 206 to the door locking device 192 and the related controller 212. That is, when power cannot be supplied from the main battery 204, the second controller 210 allows the backup battery 206 to generate the emergency power required for door lock / unlock. The related controller 212 participates in communication and user authentication with the remote controller 174. In the process, the related controller 212 can generate a user authentication signal.

[0049] The first controller 208 receives information about the main battery 204 detected by the battery sensor 214 through a LIN (Local Interconnect Network) transceiver 216. The information about the main battery 204 includes information about a state of charge (SOC) of the main battery 204.

[0050] The power B+ of the main battery 204 is converted to V by the main regulator 218. cc voltage and supplies it to the first controller 208. The main regulator 218 may operate in response to at least one of the engine start signal IGN and the INH signal of the LIN transceiver 216.

[0051] The first controller 208 converts the power B+ of the main battery 204 and the emergency power V emergency Any one of them is used as controller power to supply to the relevant controller 212. In addition, the first controller 208 supplies the power B+ of the main battery 204 and the emergency power V emergencyAny one of them is supplied to the door locking device 192 as the door locking / unlocking power. When the door locking / unlocking power is supplied to the door locking device 192, under the control of the first controller 208, the door locking device 192 is operated by driving the motor driver 220 to perform locking / unlocking of the door 190.

[0052] The second controller 210 controls the charging of the backup battery 206 and the preparation of emergency power in response to the request of the first controller 208. The voltage V of the backup battery 206 is converted by the emergency regulator 222. bub To generate the operating voltage V of the second controller 210 cc The emergency regulator 222 operates in response to receiving an emergency operation signal input through the external interface 224. When the supply of power from the main battery 204 is not performed normally, for example, when the main battery 204 is fully discharged, or when the power of the main battery 204 is not supplied due to physical damage such as a disconnection, the emergency operation signal may occur when a user operates a switch outside the vehicle to open and close a door.

[0053] The backup battery 206 is charged by the voltage B+ of the main battery 204. That is, when the second controller 210 generates a charging control signal, the charger 226 operates to charge the backup battery 206. When the main battery 204 operates normally, the backup battery 206 is charged.

[0054] When an emergency operation signal occurs because the main battery 204 does not work properly, the second controller 210 activates the booster 228 in response to the emergency operation signal, and the voltage V bub The voltage is increased by the operation of the booster 228 to generate the emergency power V emergency However, assuming that a user authentication signal of the relevant controller 212 is received, the second controller 210 generates the emergency power V emergency .

[0055] Figure 3 is a schematic diagram showing the operation of a control system when a main battery of a vehicle operates normally according to an embodiment of the present invention.

[0056] like Figure 3 As shown, when the main battery 204 of the vehicle 100 according to one embodiment of the present invention operates normally, the power of the main battery 204 is normally supplied to the first controller 208 and the second controller 210, the motor driver 220, the related controller 212, the door locking device 192, etc., and the related controller 212 and the user authentication of the door locking device 192 are normally driven. That is, when the main battery 204 operates normally, the locking / unlocking of the door locking device 192 is normally performed by utilizing the power supplied from the main battery 204.

[0057] In addition, when the main battery 204 of the vehicle 100 according to one embodiment of the present invention is operating normally, the backup battery 206 is charged under the control of the second controller 210. That is, the power B+ supplied from the main battery 204 is transferred to the backup battery 206 through the charger 226, that is, the backup battery 206 is charged. The second controller 210 determines the target charge amount of the backup battery 206 in consideration of the SOC of the main battery 204, which will be referred to in detail later. Figure 5 and Figure 6 Describe in detail.

[0058] from Figure 3 It can be seen that when the main battery 204 of the vehicle 100 according to one embodiment of the present invention operates normally, the emergency power V of the backup battery 206 is not activated. emergency The supply involves an external interface 224 , an emergency regulator 222 and a booster 228 .

[0059] Figure 4 is a schematic diagram showing the operation of a control system when a main battery of a vehicle does not function normally according to an embodiment of the present invention.

[0060] like Figure 4 As shown, when power is not supplied from the main battery 204 due to complete discharge or disconnection (i.e., when the main battery 204 does not operate normally), the first controller 208, the second controller 210, the associated controller 212, and the door lock device 192 do not receive power (B+) from the main battery 204. Therefore, when the main battery 204 does not operate normally, locking / unlocking of the door lock device 192 controlled by the first controller 208 using the power B+ of the main battery 204 is not performed.

[0061] In the vehicle 100 according to one embodiment of the present invention, when the main battery 204 does not operate normally, the power V of the backup battery 206 is increased. bub To generate emergency power V emergency and supplies the emergency power V to the second controller 210 and the motor driver 220, the relevant controller 212, and the door locking device 192 emergency The user authentication of the relevant controller 212 and the driving of the door locking device 192 are normally performed. That is, when the main battery 204 is operating normally, the backup battery 206 is charged by the power B+ of the main battery 204, and when the main battery 204 is not operating normally, the locking / unlocking of the door locking device 192 of the vehicle 100 is performed by the power V of the backup battery 206. bubTherefore, even when the main battery 204 does not operate normally, locking / unlocking of the door locking device 192 can be normally performed by the operation of the backup battery 206 according to the present invention.

[0062] Figure 5 is a schematic diagram illustrating a method of charging a backup battery of a vehicle according to an embodiment of the present invention. Figure 6 is a schematic diagram illustrating charging a backup battery of a vehicle according to an embodiment of the present invention.

[0063] Previously, in Figure 3 In the description of FIG. 1 , it has been mentioned that the target charge amount of the backup battery 206 is determined taking into account the SOC of the main battery 204. Figure 5 As can be seen in the figure, in the vehicle 100 according to the present invention, the target charge amount of the backup battery 206 is applied differently depending on what percentage of the SOC of the main battery 204 is. For example, as the percentage of the state of charge (SOC) of the main battery 204 decreases, the target charge amount of the backup battery 206 increases. This will be described in detail below.

[0064] exist Figure 5 and Figure 6 , the reference values ​​Vth1, Vth2, and Vth3 for determining the target charge amount of the backup battery 206 have a relationship of Vth1<Vth2<Vth3.

[0065] like Figure 5 and Figure 6 As shown, when the engine of the vehicle 100 is turned on (ING ON) (“YES” in step 502 ), and the main battery 204 operates normally, the second controller 210 controls the charging of the backup battery 206 by applying the minimum reference value Vth1 (step 508 ).

[0066] If the engine of the vehicle 100 is not turned on (IGN OFF) ("No" in step 502) and the main battery 204 is not operating normally, the second controller 210 confirms what the percentage of the state of charge (SOC) of the main battery 204 detected by the battery sensor 214 is ("Yes" in step 514). In one embodiment of the present invention, the state of charge (SOC) of the main battery 204 is divided into three parts: "SOC ≥ 65%", "65% > SOC ≥ 30%", and "SOC < 30%". The backup battery 206 is charged by applying any one of the reference values ​​of Vth1, Vth2, and Vth3 according to which part of the three parts the SOC of the main battery 204 belongs to.

[0067] In the case where the engine of the vehicle 100 is turned off, if the state of charge (SOC) of the main battery 204 is "SOC ≥ 65%" ("Yes" in step 516), the second controller 210 controls the charging of the backup battery 206 by applying the minimum reference value Vth1 (step 508). When the engine of the vehicle 100 is turned on, the main battery 204 can be fully charged, and even when the engine is turned off, if the state of charge (SOC) of the main battery 204 is "SOC ≥ 65%", relatively sufficient power can be supplied from the main battery 204. In this case, the backup battery 206 is charged to 90% (reference value Vth1) by applying the minimum reference value Vth1. Figure 6 “SOC ≥ 65%” section).

[0068] When the engine of the vehicle 100 is turned off ("Yes" in step 526), ​​if the state of charge (SOC) of the main battery 204 is "65%>SOC≥30%", the second controller 210 controls the charging of the backup battery 206 by applying the reference value Vth2, which is an intermediate value between Vth1 and Vth3 (step 528). In the case where the engine of the vehicle 100 is turned off, when the state of charge (SOC) of the main battery 204 is "65%>SOC≥30%", even if the power obtained from the main battery 204 is insufficient, since the backup battery 206 can receive a relatively stable level of power, in this case, the backup battery 206 is charged to 95% (reference value Vth2) by applying the intermediate reference value Vth2. Figure 6 The “65%>SOC≥30%” part).

[0069] When the engine of the vehicle 100 is turned off, if the state of charge (SOC) of the main battery 204 is "SOC < 30%" ("No" in step 526), ​​the second controller 210 controls the charging of the backup battery 206 by applying the maximum reference value Vth3 (step 538). When the engine of the vehicle 100 is turned off, when the state of charge (SOC) of the main battery 204 is "SOC < 30%", since the power that can be supplied from the main battery 204 is relatively insufficient, in this case, in order to actively use the backup battery 206 when an emergency occurs, the backup battery 206 is charged to 98% (reference value Vth3) by applying the maximum reference value Vth3. Figure 6 “SOC<30%” part).

[0070] As described above, in one embodiment of the present invention, when the power of the main battery 204 is unavailable, the backup battery 206 may be actively utilized by adjusting the target charge amount of the backup battery 206 in consideration of the SOC of the main battery 204 .

[0071] Figure 7is a schematic diagram illustrating a vehicle control method when a main battery of the vehicle does not function normally according to an embodiment of the present invention.

[0072] like Figure 7 As shown, when the battery sensor 214 detects that the state of the main battery 204 is abnormal, an emergency operation signal is generated. When the emergency operation signal is generated and input through the external interface 224 ("Yes" in step 702), the second controller 210 drives the booster 228 to increase the backup voltage V bub Boost to a predetermined level to generate emergency power V emergency (Step 704). The emergency power V generated in this way emergency Supplied to the relevant controller 212 to prepare for operation of the user's remote controllers 172 and 174.

[0073] When power is supplied to the relevant controller 212 and the user operates the remote controllers 172 and 174 to open or close the vehicle door 190, the relevant controller 212 requests user authentication to the second controller 210 based on the signals received from the remote controllers 172 and 174, and the second controller 210 performs user authentication on the authenticated user (step 706). When the user authentication is completed ("Yes" in step 708), the second controller 210 supplies power for door locking / unlocking to the vehicle door locking device 192 through the control of the motor driver 220, thereby allowing the vehicle door locking device 192 to be opened or closed (step 710).

[0074] The above description is only an illustration of the technical idea, and a person skilled in the art of the present invention will be able to make various modifications, changes and substitutions without departing from the essential features. Therefore, the disclosed embodiments and drawings are not intended to limit the technical idea, but to describe the technical idea, and the scope of the technical idea is not limited by these embodiments and drawings. The scope of protection should be interpreted by the scope of the attached claims, and all technical ideas within the same scope should be understood to be included in the scope of rights.

[0075] According to an aspect of the present invention, even in a case where a main battery of a vehicle cannot normally supply power, vehicle doors can be locked / unlocked by a remote controller.

Claims

1. A vehicle comprising: a vehicle door locking device configured to perform locking and unlocking of the vehicle door; as well as The controller is configured as: The door locking device is driven by the electric power of the first battery. charging the second battery using the power of the first battery, When power is not supplied from the first battery, the door locking device is driven using power from the second battery; The controller is configured as follows: when the engine of the vehicle is turned off, when the power state of the first battery is greater than or equal to 65%, the second battery is charged to a reference value Vth1 using the power of the first battery; when the power state of the first battery is less than 65% and greater than or equal to 30%, the second battery is charged to a reference value Vth2 greater than the reference value Vth1 using the power of the first battery; when the power state of the first battery is less than 30%, the second battery is charged to a reference value Vth3 greater than the reference value Vth2 using the power of the first battery.

2. The vehicle according to claim 1, wherein: The controller comprises: a first controller configured to drive the door locking device using electric power of the first battery when electric power is supplied from the first battery; and The second controller is configured to control charging of the second battery when power is supplied from the first battery, and to control driving of the door locking device when power is not supplied from the first battery.

3. The vehicle according to claim 1, further comprising: The relevant controller is configured as follows: Communicate with the remote control, When power is supplied from the first battery, power is received from the first battery, When power is not supplied from the first battery, power is received from the second battery, Wherein, the remote controller is configured to provide communication to remotely lock and unlock the vehicle door locking device.

4. The vehicle according to claim 3, wherein: The controller is configured to control power supplied to the relevant controller and authenticate a user by performing a voltage boost control of the second battery in response to an emergency operation signal generated when power is not supplied from the first battery.

5. The vehicle of claim 1, wherein: The door locking device includes a door latch configured to be mechanically operated by a driving force of a motor, The motor is configured to be driven by power from the first battery or power from the second battery.

6. A control method for a vehicle, the vehicle comprising a door locking device configured to perform locking and unlocking of a vehicle door, the method comprising: The door locking device is driven by the electric power of the first battery. charging the second battery using power from the first battery; When power is not supplied from the first battery, the door locking device is driven using power from the second battery; Among them, when the engine of the vehicle is turned off, when the power state of the first battery is greater than or equal to 65%, the power of the first battery is used to charge the second battery to a reference value Vth1; when the power state of the first battery is less than 65% and greater than or equal to 30%, the power of the first battery is used to charge the second battery to a reference value Vth2 greater than the reference value Vth1; when the power state of the first battery is less than 30%, the power of the first battery is used to charge the second battery to a reference value Vth3 greater than the reference value Vth2.

7. The control method according to claim 6, further comprising: When power is supplied from the first battery, the power of the first battery is supplied to the relevant controller, and when power is not supplied from the first battery, the power of the second battery is supplied to the relevant controller, Wherein, the vehicle further includes a related controller, which is configured to communicate with a remote controller configured to remotely lock and unlock the vehicle door locking device.

8. The control method according to claim 6, wherein: The door locking device further includes a door latch configured to be mechanically operated by a driving force of the motor, The motor is configured to be driven by power from the first battery or power from the second battery.

9. A vehicle comprising: a vehicle door locking device configured to perform locking and unlocking of the vehicle door; as well as The controller is configured as: The door locking device is driven by the electric power of the first battery. When charging the second battery with the power of the first battery, determining a target charge capacity of the second battery based on the charge state of the first battery; When power is not supplied from the first battery, the door locking device is driven using power from the second battery; Wherein, the controller is configured as follows: when the engine of the vehicle is turned off, when the state of charge of the first battery is greater than or equal to 65%, the second battery is charged to a reference value Vth1 using the power of the first battery; when the state of charge of the first battery is less than 65% and greater than or equal to 30%, the second battery is charged to a reference value Vth2 greater than the reference value Vth1 using the power of the first battery; when the state of charge of the first battery is less than 30%, the second battery is charged to a reference value Vth3 greater than the reference value Vth2 using the power of the first battery; The controller is configured to determine the target charge capacity of the second battery by applying a minimum reference value Vth1 when the engine of the vehicle is turned on and the first battery is operating normally.

10. The vehicle according to claim 9, wherein: The controller comprises: a first controller configured to drive the door locking device using electric power of the first battery when electric power is supplied from the first battery; and The second controller is configured to control charging of the second battery when power is supplied from the first battery, and to control driving of the door locking device when power is not supplied from the first battery.

11. The vehicle of claim 9, further comprising: The relevant controller is configured as follows: Communicate with the remote control, When power is supplied from the first battery, power is received from the first battery, When power is not supplied from the first battery, power is received from the second battery, Wherein, the remote controller is configured to provide communication to remotely lock and unlock the vehicle door locking device.

12. The vehicle according to claim 11, wherein: The controller is configured to control power supplied to the relevant controller and authenticate a user by performing a voltage boost control of the second battery in response to an emergency operation signal generated when power is not supplied from the first battery.

13. The vehicle of claim 9, wherein: The door locking device includes a door latch configured to be mechanically operated by a driving force of a motor, The motor is configured to be driven by power from the first battery or power from the second battery.

14. A control method for a vehicle, the vehicle comprising a door locking device configured to perform locking and unlocking of a vehicle door, the method comprising: using the electric power of the first battery to drive the door locking device; When charging the second battery with the power of the first battery, determining a target charge capacity of the second battery based on the charge state of the first battery; When power is not supplied from the first battery, the door locking device is driven using power from the second battery; Wherein, when the engine of the vehicle is turned off, when the state of charge of the first battery is greater than or equal to 65%, the power of the first battery is used to charge the second battery to a reference value Vth1; when the state of charge of the first battery is less than 65% and greater than or equal to 30%, the power of the first battery is used to charge the second battery to a reference value Vth2 greater than the reference value Vth1; when the state of charge of the first battery is less than 30%, the power of the first battery is used to charge the second battery to a reference value Vth3 greater than the reference value Vth2; Wherein, determining the target charge amount of the second battery includes: when the engine of the vehicle is turned on and the first battery operates normally, applying the minimum reference value Vth1.

15. The control method according to claim 14, further comprising: When power is supplied from the first battery, the power of the first battery is supplied to the relevant controller, and when power is not supplied from the first battery, the power of the second battery is supplied to the relevant controller, Wherein, the vehicle further includes a related controller, which is configured to communicate with a remote controller configured to remotely lock and unlock the vehicle door locking device.

16. The control method according to claim 15, further comprising: In response to an emergency operation signal generated when power is not supplied from the first battery, power supplied to the relevant controller is controlled and a user is authenticated by performing a voltage boost control of the second battery.

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