KR102470995B1 - Apparatus for managing power of vehicle and method for controlling the same - Google Patents

Abstract

The present invention relates to a vehicle power management device capable of efficiently blocking dark current and a control method thereof. A control method of an apparatus for managing power for a vehicle according to an embodiment of the present invention includes: entering a cut-off setting mode for individually setting a controller to be cut off from supplying power when a first preset condition is satisfied; selecting at least one controller from which power supply is to be cut off in the cut-off setting mode; and cutting off power supply to the at least one selected controller when a predetermined second condition is satisfied.

Description

Vehicle power management device and its control method {APPARATUS FOR MANAGING POWER OF VEHICLE AND METHOD FOR CONTROLLING THE SAME}

The present invention relates to a vehicle power management device capable of efficiently blocking dark current and a control method thereof.

In general, a fuse box equipped with a fuse for protecting circuits from power supplied to various electric devices is mounted in a vehicle. However, in recent years, Smart Junction Box (SJB), which is a multifunctional fuse box with a built-in microcontroller (Micom) to control the operating time of various relay circuits and some electrical devices, in addition to general fuse box functions. is a trend that is widely used.

1 shows an example of a general smart junction box structure.

Referring to FIG. 1, the smart junction box 100 converts power supplied from the battery 210 into a relay and an intelligent power switch (based on the control signal received through the communication unit 220 and the state of the vehicle switch 230). It includes a microcomputer 110 that controls to supply or cut off power to various loads in the vehicle by operating an IPS (Intelligent Power Switch). In addition, the smart junction box 100 is generally provided with a fuse switch 120 that is turned on when the vehicle is delivered to a customer after manufacturing the vehicle, and according to the state of the fuse switch 120, the microcomputer 120 supplies power to the vehicle. can be controlled in different ways. This will be described with reference to FIG. 2 .

2 is a flowchart illustrating an example of a process of managing vehicle power in a general smart junction box.

Referring to FIG. 2 , as an external switch input occurs or CAN (Controller Area Network) communication is activated, the smart junction box can supply power to various load systems in the vehicle (S201). When the sleep mode entry condition (for example, body CAN communication enters the sleep mode) is satisfied after the power supply is started (S202), the smart junction box enters the sleep mode (S203) and performs an operation to block the dark current. can do.

The operation for blocking the dark current may be different according to the state of the fuse switch (S204). Specifically, when the fuse switch is turned on when delivered to the customer, when the timer starts and a predetermined time (eg, 20 minutes) has elapsed (S205), the lamp load is first cut off (S206), and a longer time (eg, For example, when 12 hours) elapses (S207), the body electric load may be cut off (S208). When the body electric load is cut off, the micom is powered off (S209), and the corresponding state is maintained until a preset release condition is satisfied (S210). Here, when a locking signal is received through a remote control such as a smart key after the timer starts, the load shedding may start after a shorter time (eg, 5 seconds) has elapsed. In addition, the preset release condition may be a change in an external switch input and/or activation of CAN communication.

Meanwhile, when the fuse switch state is OFF, when a predetermined time (eg, 5 minutes) has elapsed since the timer started (S211), all loads may be cut off at once (S222).

However, when the above-described smart junction box is applied, it is inconvenient to manually operate the fuse switch of the smart junction box located inside the crush pad (C/PAD) during vehicle transportation, long-term parking at a dealer shop, or long-term personal parking. . In addition, structurally, the load that is blocked according to the logic in the smart junction box is limited to some (namely, lamp load and body load), and the dark current blocking function operates only by the logic according to the management policy decision of the automobile manufacturer. It is difficult to satisfy the driver's needs.

An object of the present invention is to provide a power management device capable of more efficiently blocking dark current and a control method thereof.

In particular, the present invention is to provide a power management device capable of selectively blocking dark current generation according to a driver's desire and a control method thereof.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below. You will be able to.

In order to solve the above problems, a control method of a power management device for a vehicle according to an embodiment of the present invention enters a cutoff setting mode for individually setting a controller to be cut off when a first predetermined condition is satisfied. doing; selecting at least one controller from which power supply is to be cut off in the cut-off setting mode; and cutting off power supply to the at least one selected controller when a predetermined second condition is satisfied.

In addition, a vehicle power management device according to an embodiment of the present invention includes a communication module for receiving information on a battery state; microcomputer; and a blocking means for cutting off power supply to each of the at least one controller under the control of the microcomputer. Here, the microcomputer enters a cut-off setting mode for individually setting controllers to be cut off when a first predetermined condition is satisfied, and at least one controller to be cut off is selected in the cut-off setting mode, When a predetermined second condition is satisfied, the blocking unit may be controlled to cut off power supply to the selected at least one controller.

According to at least one embodiment of the present invention, there are the following effects.

The dark current of the vehicle is effectively blocked to prevent unnecessary battery consumption.

In particular, since each controller is selectively blocked according to a driver's setting based on a vehicle wiring communication system, dark current can be blocked more efficiently.

The effects that can be obtained in the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description below. There will be.

1 shows an example of a general smart junction box structure.
2 is a flowchart illustrating an example of a process of managing vehicle power in a general smart junction box.
3 shows an example of a configuration of a power management system according to an embodiment of the present invention.
4 shows an example of a form in which information that can be visually provided to a driver is displayed according to an embodiment of the present invention.
5 illustrates an example of a process in which power management is performed in consideration of a battery state in a vehicle according to an embodiment of the present invention.

Hereinafter, the embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings, but the same or similar elements are given the same reference numerals regardless of reference numerals, and redundant description thereof will be omitted. The suffixes "module" and "unit" for components used in the following description are given or used together in consideration of ease of writing the specification, and do not have meanings or roles that are distinct from each other by themselves.

In addition, in describing the embodiments disclosed in this specification, if it is determined that a detailed description of a related known technology may obscure the gist of the embodiment disclosed in this specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in this specification, the technical idea disclosed in this specification is not limited by the accompanying drawings, and all changes included in the spirit and technical scope of the present invention , it should be understood to include equivalents or substitutes.

In one embodiment of the present invention, based on a network system in a vehicle, it is proposed to allow a driver to directly set blocking or releasing conditions of individual controllers in a non-starting (IGN Off) condition, and to perform dark current blocking accordingly. . In addition, it is proposed to allow the driver to conveniently check the state of charge (SOC level) information of the vehicle battery.

According to one aspect of the present embodiment, the communication method for implementing the network system is wired communication applicable to vehicles, such as CAN (Controller Area Network), LIN (Local Interconnect Network), Flexray, Ethernet, etc. It may include, but is not necessarily limited thereto.

In addition, according to one aspect of the present embodiment, the dark current cut-off condition for each controller set by the driver, restrictions thereon, and battery status information are displayed on a smart device owned by the driver or a display provided in the vehicle (eg, a head unit display, cluster, etc.). Accordingly, an environment in which startability of the vehicle battery is secured and functions in a non-start condition can be efficiently managed can be provided.

In addition, according to one aspect of the present embodiment, when a boundary condition for battery restartability is entered (eg, SoC 65%), an alarm is periodically provided to the driver, and the vehicle is remotely restarted according to the driver's selection to stabilize the battery. It can be charged up to a condition (eg, SoC 80%), and the result can be informed to the driver.

In addition, according to one aspect of the present embodiment, information on the state of charge of the battery may be obtained from the battery sensor, and in a state in which the ignition is off, a controller other than the engine controller controls the battery sensor (ie, from the battery sensor to the battery obtain status information and pass it to the power management device). Here, the other controller is preferably a controller that stays awake even when the ignition is turned off, such as a smart key controller (SMK). In particular, this configuration requires a controller that acts as a LIN master when the battery sensor uses the LIN (Local Interconnect Network) communication method to communicate with the outside, so the controller that always acts as the LIN master regardless of whether it is started There are advantages that can be provided. Alternatively, the battery sensor and the power management device may be directly connected through CAN communication. Alternatively, the power management device or a separate controller may periodically wake up the engine controller so that the engine controller obtains the battery sensor value and transmits the obtained battery sensor value to the power management device in the ignition-off state.

A vehicle power management system for this will be described with reference to FIG. 3 .

In this specification, it is assumed that the power management device of the vehicle is a smart junction box for convenience in the following description including FIG. 3 . However, this is an example, and the name may be ICU (Integrated Control Unit), and may be implemented as an integrated gateway & power control module (IGPM) power management module integrated with a gateway. In addition, the power management device according to the present embodiment may be implemented in a form instructing the smart junction box to perform the dark current blocking function after determining the battery state in another controller.

3 shows an example of a configuration of a power management system according to an embodiment of the present invention.

Referring to FIG. 3 , the battery sensor 320 detects a state of charge (SOC) of the battery 310 . In this case, when the battery sensor 320 transmits the sensed SOC information to the outside through LIN communication, the LIN master controller may be changed according to the starting state of the vehicle. For example, in an IGN ON state, an engine controller (EMS: Engine Management System, 330) serves as a LIN master controller. This is because, in the IGN ON state, the EMS 330 needs to periodically monitor battery state information from the battery sensor 320 to control power generation, and in the IGN ON state, the dark current blocking management of the vehicle is not required.

In addition, in the ignition off (IG OFF) state, the SOC information must be delivered to the SJB (350) to actively perform the dark current blocking function according to the vehicle battery state, so the smart key controller 340 plays the role of the LIN master controller can do.

In more detail, the battery sensor 320 periodically acquires SOC information of the battery, and when the SOC is less than a reference value (eg, 70%), the SMK 340 sends a predetermined communication message (eg, , Low SOC state value) to wake-up the SJB. At this time, the communication message may include only information indicating a state less than or equal to a specific value, or may include an actual SOC level value.

The awakened SJB 350 may perform a dark current blocking operation according to a procedure shown in FIG. 4 to be described later.

Of course, as described above, when the CAN communication method is applied to the battery sensor instead of the LIN communication method, the battery sensor 320 and the SJB 350 may be directly connected through CAN communication.

In addition, the SJB 350 displays a list of currently set blocking controllers, a list of controllers that can be blocked, a list of controllers that cannot be blocked, whether or not related functions can be executed according to whether or not blocked, Corresponding information may be provided to display information such as a current SOC level and a blocking threshold SOC level. In addition, the SJB 350 may also provide information that can be provided through the display to the communication module 370 so that the corresponding information is transmitted to the outside. Here, the display may include a display, touch screen, cluster, etc. of the AVN system of the vehicle, and the communication module may be a separate communication module for this function, or a telematics modem, Bluetooth module, and Wi-Fi provided in the AVN system. It may be a wireless communication module such as /3G/4G. If the communication module 370 is a wireless communication module such as Bluetooth, Wi-Fi, or 3G/4G, the corresponding information may be transmitted directly to the connectable driver's smart device, or if it is a telematics modem, the telematics service center provided by the vehicle manufacturer It can also be transmitted to the driver's smart device via (server, etc.). Also, a command for changing setting information and/or a remote start command may be received through the communication module 370 .

Meanwhile, controllers whose power is managed by SJB can be classified into two groups. One of them is the controllers 380 capable of blocking the dark current according to the driver's selection, and the other is the controllers 390 that do not allow the driver's cut-off setting, that is, are excluded from blocking. The controllers 380 capable of shutting off the dark current according to the driver's selection have a separate power cut-off unit (e.g., IPS) inside the SJB 350 so that they can be cut off for each controller or for each controller group classified by function. Preferably, each power cutoff means can be controlled by a microcomputer inside the SJB.

Next, a method for performing blocking setting for each controller according to the present embodiment will be described.

Block setting for each controller may be performed on a user interface provided through a display provided in a vehicle as described above, or may be performed through a driver's smart device connected to the vehicle.

Information on controllers capable of blocking dark current according to the driver's selection may be visually provided to the driver in the form shown in Table 1 below.

No.
ECU
Restriction function when blocking block One
seat heated
Limited seat heating function O
2
O/Side Mirror
Outside mirror folding/unfolding function limited

Outside mirror tilting function limited O
3
H/VAC
Limited air conditioning and heater functions X
4
power seat
module
Seat moving function limitation X
.
.
. .
.
. .
.
.

Referring to Table 1, information on controllers capable of blocking dark current may include a controller name, a function restricted when the corresponding controller is blocked, and information on blocking setting. Here, as the driver changes the cut-off setting, it may be determined whether dark current cut-off is performed when the battery SOC falls below the set value for each controller. Of course, the blocking itself may be performed immediately when the ignition is turned off regardless of the SOC level or when a predetermined condition (eg, a specific time elapses after the ignition is turned off, the setting of the dark current cutoff controller is completed, etc.) is satisfied.

In addition, as shown in Table 2 below, information on a controller that cannot be blocked may be visually provided. The information on the controller that cannot be blocked may include category classification information, a controller name, and information on a reason why blocking of the corresponding controller is excluded.

No.
division
ECU
Reasons for exclusion from blocking
One
CAS SMK Smart key
2
Law
E-call
Emergency call in case of traffic accident
3 Security IND
anti theft
4
startability
Stop Lamp SW
start-up condition
5
always
Hazard
Driver emergency status indication
6
MTS
App. based remote control
7
marketability

Lowering
DDM Operation after blocking ECU

Delay occurrence
8
Cluster
Preservation of training data and

vehicle status display
9
Clock
Time reset at initialization

The information of the non-blocking controller shown in Table 2 may be displayed through a display provided in the vehicle or through a driver's smart device connected to the vehicle.

Therefore, the driver can visually check the blockable controller and information related thereto, unblock the controller related to the function deemed necessary in the ignition off state, and set the controller related to the function deemed unnecessary to be selectively blocked. have.

Meanwhile, according to the present embodiment, the driver can directly set the SOC value of the battery at which the controller selected by the driver starts shutting down, and when the SOC of the battery drops enough to affect restarting, the driver may be notified of this. A user interface for this will be described with reference to FIG. 4 .

4 shows an example of a form in which information that can be visually provided to a driver is displayed according to an embodiment of the present invention. Each diagram of FIG. 4 may be displayed on a vehicle display (eg, AVN system display, cluster, etc.) or displayed on a display of a smart device connected to the vehicle, and a user command input related to each device may be displayed. It can be manipulated through means (eg, a touch screen, key buttons, dial, etc.).

Referring to (a) of FIG. 4 , the battery SOC level gauge is displayed through the display. The level gauge can be divided into stable state, normal state, and warning state for each level, and at the bottom of the level gauge, the controllers set to be cut off by the driver have a sub gauge to set the soc level at which the actual cutoff is performed while the engine is turned off. can be displayed

In (a) of FIG. 4, the sub-gauge is set at 70%, and when the driver wishes to block the controllers to be blocked at the SOC level of 75%, the sub-gauge corresponds to 75% as shown in (b) of FIG. position can be adjusted. At this time, the position of the sub gauge can be adjusted by dragging the sub gauge to the left if the display is a touch screen or by touching the position corresponding to 75%, and if there is a key button or dial corresponding to +/- , You can operate the key button or dial in the + direction until the sub gauge reaches 75%. Of course, it is obvious to those skilled in the art that these manipulation methods are exemplary and can be variously changed according to the type of command input means.

On the other hand, when the battery SOC level goes down to a specific value or less, a message for confirming restarting may be transmitted from the vehicle to the driver's smart device as shown in (c) of FIG. 4 to secure restartability, where the driver When restarting is selected, the starting state may be maintained until the SOC level of the battery reaches a certain level. The display of such a message and delivery of a command to the vehicle according to the determination of whether to start may be performed through an application running on the smart device.

Hereinafter, a power management procedure of the power management device according to the present embodiment will be described with reference to FIG. 5 .

5 illustrates an example of a process in which power management is performed in consideration of a battery state in a vehicle according to an embodiment of the present invention.

Referring to FIG. 5 , when the ignition is first turned off (S501), the smart junction box may enter the dark current blocking setting mode (S502). When the driver finishes the setting in the corresponding mode or has set it in advance (S503), the smart junction box blocks the driver when the set condition is satisfied (for example, when the battery SOC level falls below a specific value). The power supply to the controller is cut off (S504).

Afterwards, the remaining SOC level of the battery may be displayed through the display of the vehicle or a smart device connected thereto (S505).

If the SOC of the battery falls below the first predetermined threshold (here, 65%) for ensuring restartability (S506), a SOC level warning guide may be output through the display of the vehicle or a smart device connected thereto. (S507).

If the driver selects restart (remote start in the case of a smart device) according to the warning output (S508), the vehicle is started (S509), and when the SOC level reaches a certain level (here 80%, S510), the engine is turned off. It can (S511). When the ignition is turned off, information for notifying this may be output through an output means such as a display of a vehicle or a smart device connected thereto.

On the other hand, if the driver does not select restart in step S508, a notification output for the remaining SOC level of the battery is performed (S513), and if it is lower than the second threshold (here, 60%) lower than the first threshold ( S514) A warning notification may be output again (S515). Accordingly, the driver can select whether or not to restart (S516).

The above-described present invention can be implemented as computer readable code on a medium on which a program is recorded. The computer-readable medium includes all types of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable media include Hard Disk Drive (HDD), Solid State Disk (SSD), Silicon Disk Drive (SDD), ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc. there is

Accordingly, the above detailed description should not be construed as limiting in all respects and should be considered illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

Claims (21)

In the control method of a vehicle power management device,
entering a cut-off setting mode for individually setting controllers to be cut off from power supply when a preset first condition is satisfied;
selecting at least one controller from which power supply is to be cut off in the cut-off setting mode;
cutting off power supply to the at least one selected controller when a predetermined second condition is satisfied; and
When the battery state information satisfies a preset third condition, outputting a battery state warning notification; Including,
When a first command is input from the driver in response to the output of the notification, turning on the engine until the state information of the battery satisfies a preset fourth condition. According to claim 1,
The step of entering the blocking setting mode,
Displaying a list of controllers that can be blocked according to the driver's selection,
A control method of a vehicle power management device. According to claim 2,
The list of controllers capable of blocking is, for each controller,
A control method of a vehicle power management device comprising at least one of a name, a related function, and information on whether or not a blocking setting is set. According to claim 1,
The step of entering the blocking setting mode,
A control method of a vehicle power management device, comprising the step of displaying a list of controllers that cannot be blocked according to a driver's selection. According to claim 4,
The list of controllers that cannot be blocked is, for each controller,
A control method of a power management device for a vehicle, comprising at least one of category classification information, a name, and information on a reason for exclusion from blocking. delete delete According to claim 1,
The preset first condition is,
A control method of a power management device for a vehicle, comprising turning off the ignition. According to claim 1,
The preset second condition is,
A control method of a vehicle power management device, including at least one of a case in which setting is completed through the cut-off setting mode, a predetermined time elapses from satisfaction of the first condition, and a case in which battery state information satisfies a preset fifth condition. A computer readable recording medium recording a program for executing the control method of the vehicle power management device according to any one of claims 1 to 5 and 8. In the vehicle power management device,
a communication module for receiving information about a battery state;
microcomputer; and
Including a blocking means for cutting off the power supply to each of the at least one controller under the control of the micom,
The microcomputer,
When a preset first condition is satisfied, a cut-off setting mode for individually setting controllers to be cut off from power supply is entered, and after at least one controller to be cut off from power supply is selected in the cut-off setting mode, a preset second condition If is satisfied, controlling the blocking means so that power supply to the at least one selected controller is cut off;
When the battery state information satisfies a preset third condition, controlling a battery state warning notification to be output through a display inside the vehicle or a display of a smart device connected to the vehicle,
When a first command is received from the driver in response to the output of the notification, the vehicle power management device controls the ignition to be turned on until the state information of the battery satisfies a preset fourth condition. According to claim 11,
The micom, in the blocking setting mode,
A vehicle power management device that controls the communication module to display a list of controllers that can be blocked according to a driver's selection through a display inside the vehicle or a display of a smart device connected to the vehicle. According to claim 12,
The list of controllers capable of blocking is, for each controller,
A power management device for a vehicle, including at least one of a name, a related function, and information on whether or not a cutoff is set. According to claim 11,
The micom, in the blocking setting mode,
A vehicle power management device that controls the communication module to display a list of controllers that cannot be blocked according to a driver's selection through a display inside the vehicle or a display of a smart device connected to the vehicle. According to claim 14,
The list of controllers that cannot be blocked is, for each controller,
A power management device for a vehicle, including at least one of category classification information, a name, and information about a reason for being excluded from blocking. delete delete According to claim 11,
The preset first condition is,
A power management device for a vehicle, including ignition off. According to claim 11,
The preset second condition is,
A vehicle power management device comprising at least one of completion of setting through the cut-off setting mode, a case in which a predetermined time elapses from satisfaction of the first condition, and a case in which battery state information satisfies a preset fifth condition. According to claim 11,
The power management device includes a smart junction box,
Wherein the blocking means comprises an intelligent power switch (IPS). According to claim 11,
The microcomputer,
When the state information of the battery satisfies the third condition, controlling to transmit a message to a smart device connected to the vehicle, the vehicle power management device.

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