KR20200057519A - Appratus and method for controlling darkcurrent of vehicle - Google Patents

Abstract

According to the present invention, a dark current control apparatus of a vehicle comprises: a calculation unit which calculates a required current of a plurality of devices provided in the vehicle and a required time to which the required current is to be applied when the ignition of the vehicle is turned off; a determining unit for setting a priority based on the calculated required current and required time, but when a required current of a new device is additionally generated, variably setting the priority by reflecting the required current of the new device and a required time to which the required current should be applied; and a control unit which cuts off power to the plurality of devices and the new device based on the variably set priority. Accordingly, a dark current can be effectively controlled by changing a sequence of cut-off time by reflecting the additional required power generated from the vehicle update.

Description

Vehicle dark current control device and method {APPRATUS AND METHOD FOR CONTROLLING DARKCURRENT OF VEHICLE}

The present invention relates to a dark current control device and method for a vehicle.

When the vehicle is stopped from starting, the current flow from the battery to various accessories such as the starter and radio is blocked, but the current from the battery and other controllers are continuously supplied with battery current. This current is called the dark current.

Due to this, the battery is discharged in a state in which a minimum voltage for starting is not secured, causing inconvenience to the driver. In order to solve this inconvenience, a technology has been developed to turn off the switch or shut off the electric system sequentially based on a specific time using the state of charge (SOC) information before the battery level falls below a certain value. Is becoming.

However, according to these technologies, the power-off system and time are predefined, so when the time arrives, the power is cut off and the system cannot be operated after the cut-off point. Therefore, there is a problem in that it is difficult to cut off the power in a predetermined time sequence according to time.

One object of the present invention is to control the dark current by recalculating the required power changed according to the vehicle update.

The technical problems of 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 following descriptions.

The dark current control device according to an embodiment of the present invention includes a calculation unit that calculates the required currents of the plurality of devices provided in the vehicle and the required time to which the requested currents are to be applied when the vehicle is started off, and the calculated Priority is set based on the requested current and the requested time, but when the requested current of the new device is additionally generated, the priority is variable by reflecting the requested current of the new device and the requested time to which the requested current should be applied. It includes a determination unit for setting and a control unit for turning off the power of the plurality of devices and the new device based on the variable set priority.

In addition, the plurality of devices include devices that must be operated in the vehicle for the required time after the vehicle is started off.

In addition, when the required current of the new device is additionally generated, a case in which a vehicle update is performed is included.

In addition, the vehicle update is performed by OTA (Over The Air).

In addition, the vehicle update includes an update of the AVN device.

Then, the required current and the requested time of the added new device are calculated from the calculation unit.

In addition, the priority and the variably set priority are set in the order in which the request time is long.

In addition, the control unit includes a plurality of switches for controlling the power off of the plurality of devices.

Then, the control unit sets a power-off time sequence based on the variably set priority, and cuts off the power of the plurality of devices and the new device according to the power-off time sequence.

In addition, the power-off time sequence is set in the order in which the time at which the requested current is to be applied is short.

The method for controlling the dark current of a vehicle according to an embodiment of the present invention includes calculating the required currents of the plurality of devices provided in the vehicle and the required time to which the requested currents should be applied when the vehicle is started off, and the calculation Priority is set based on the requested current and the requested time, but when the current required for the new device is additionally generated, the priority is variable by reflecting the requested current of the new device and the requested time to which the requested current should be applied. And turning off the power of the plurality of devices and the new device based on the set priority and the variably set priority.

In addition, the plurality of devices include devices that must be operated in the vehicle for the required time after the vehicle is started off.

In addition, when the required current of the new device is additionally generated, a case in which a vehicle update is performed is included.

In addition, the vehicle update is performed by OTA (Over The Air).

In addition, the vehicle update includes an update of the AVN device.

In addition, when the required current of the new device is additionally generated, the method further includes calculating the required current and the required time of the added new device.

In addition, the priority and the variably set priority are set in the order in which the request time is long.

And, the step of turning off the power of the plurality of devices and the new device includes being controlled through a plurality of switches connected to the plurality of devices.

In addition, the step of turning off the power of the plurality of devices and the new device sets a power-off time sequence based on the variably set priority, and the plurality of devices and the new device according to the power-off time order. Turn off the power.

In addition, the power-off time sequence is set in the order in which the time at which the requested current is to be applied is short.

In the dark current control apparatus and method of a vehicle according to an embodiment of the present invention, the dark current is controlled by cutting off the power according to the time sequence, but by changing the order of the breaking time by reflecting the additional required power generated in the vehicle update, Increase efficiency.

In addition, as the efficiency of dark current control increases, stable power supply to the vehicle may be possible.

1 is a block diagram of a dark current control device according to an embodiment of the present invention.
2 is a detailed block diagram of a dark current control device according to an embodiment of the present invention.
3 is a flowchart illustrating a dark current control method according to an embodiment of the present invention.
4 is a graph showing dark current control according to an embodiment of the present invention.
5 is a block diagram showing a computing system executing a dark current control method according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. It should be noted that in adding reference numerals to the components of each drawing, the same components have the same reference numerals as possible even though they are displayed on different drawings. In addition, in describing the embodiments of the present invention, when it is determined that detailed descriptions of related well-known configurations or functions interfere with the understanding of the embodiments of the present invention, detailed descriptions thereof will be omitted.

In describing the components of the embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the component from other components, and the nature, order, or order of the component is not limited by the term. In addition, unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains. Terms such as those defined in a commonly used dictionary should be interpreted as having meanings consistent with meanings in the context of related technologies, and should not be interpreted as ideal or excessively formal meanings unless explicitly defined in the present application. Does not.

2 is a block diagram of a dark current control device according to an embodiment of the present invention.

As shown in FIG. 2, the dark current control device may include a calculation unit 11, a determination unit 12, and a control unit 13.

The calculator 11 may calculate a time when the vehicle is started off, that is, a current required to drive a plurality of devices provided in the vehicle and a time required to be applied before the communication unit enters the sleep mode. .

According to an embodiment of the present invention, a plurality of devices provided in a vehicle include a Smart Key (SMK) module that receives an RF signal from a driver's smart key, and an I-Box for modem wake-up for interworking with a mobile device owned by the driver. , Lamp controller, and the like.

As an example, the calculator 11 may calculate the required current of the SMK module as 800mA and the time at which the requested current should be applied to 336 hours, and the required current of the I-Box as 500mA and the time at which the requested current should be applied. It can be calculated as 168 hours, the required current of the lamp control can be calculated as 1A, and the time at which the required current should be applied can be calculated as 12 hours.

In addition, when a new device is added due to a vehicle update, the calculator 11 may calculate a current and time required for the new device.

For example, when the new device added due to the vehicle update is an AVN, the calculator 11 may calculate the required current of the AVN as 300 mA and the time at which the requested current should be applied as 0.5 hours.

The determination unit 12 sets the priority based on the requested current and time calculated by the calculation unit 11. Here, the priority may refer to a long order in which the required current should be applied. For example, the determination unit 12 may set the priority in order of SMK module, I-Box, and lamp controller.

The determination unit 12 may determine whether the vehicle is updated, and if it is determined that the vehicle has been updated, the priority may be variably set based on the current and time required for the device to be updated.

Vehicle update may be performed in an OTA (Over The Air) method, where OTA may refer to a wireless communication method established to transmit and receive information regarding vehicle system registration from a server. Vehicle update according to an embodiment of the present invention may include an update of the AVN device.

Since the determination unit 12 updates the OTA method at the time when the vehicle starts off, when a new device is added, the priority is variably set by reflecting the current and time required for the new device. The power of the devices may not be cut off according to the priority, and the power may be cut off according to the changed priority as the newly added new device is reflected.

That is, when the AVN device is updated by the OTA method when the vehicle starts off, the determination unit 12 may variably set the priority by reflecting the current and time required to update the AVN.

The control unit 13 may set a power-off time sequence based on a priority set by the determination unit 12 variably, and cut off power to the device according to the set power-off time sequence.

Here, the power-off time may refer to a time point when a time at which the required current of the device should be applied has elapsed from the time when the vehicle is started off.

The controller 13 may set the power-off time sequence in the order in which the time at which the requested current is to be applied is short.

For example, the control unit 13, the power cut-off time T1 before the priority is variably set in the determination unit 12 is the time to cut off the power of the lamp controller, T2 is the time to cut off the power of the I-Box, T3 is It can be set as the time to power off the SMK module.

However, in the present invention, since the control unit 13 sets the sequence of the power-off time based on the variably set priority, the NT before the power-off time T1 can be newly set, and the NT sets the time to power off the AVN device. Can mean

3 is a detailed block diagram of a dark current control device according to an embodiment of the present invention.

As shown in Figure 3, the dark current control device according to an embodiment of the present invention in more detail the device 10, the calculation unit 11, the determination unit 12, the control unit 13, the switch 14 and It may include a battery 15.

The device 10 may include a device that must be operated in the vehicle after the vehicle is started off, and various controllers for allowing the operation to be immediately performed when the vehicle is started and to continuously perform the basic operation of the electric device And the like.

The device 10 may be provided in plural, and is not limited to the number shown in FIG. 3.

One side of the device 10 is connected to the calculation unit 11, the other side of the device 10 may be connected to the switch unit 14.

The calculator 11 may be connected to the device 10 to calculate the required current and time required for the device at the time of starting the vehicle off.

The determination unit 12 may communicate with the calculation unit 11 in a can communication method.

The control unit 13 may communicate with the determination unit 12 through an Ethernet network, and may include a switch unit 14 to cut off power supplied from the battery 15. The number of switch parts 14 is not limited to the number of FIG. 4.

The switch unit 14 may cut off the power supplied to the device 10 from the battery 15 according to a set power-off time based on a variable priority set by the vehicle update determined by the determination unit 12.

The control unit 13 controls a switch on / off of the switch unit 14 based on SOC, SOC change amount, and SOH of the battery 15 to control whether or not the power supplied to the device 10 is cut off. Unit).

4 is a flowchart illustrating a dark current control method according to an embodiment of the present invention.

As illustrated in FIG. 4, the determination unit 12 determines the starting time of the vehicle to be turned off (S41). Further, the determination unit 12 transmits a signal requesting the required current required by devices that must be operated in the vehicle after the vehicle is started off to the calculation unit 11 (S42). Here, the device may include a Smart Key (SMK) module that receives an RF signal from the driver's smart key, an I-Box for modem wake-up for interworking with a portable device owned by the driver, a lamp controller, and the like.

The calculation unit 11 calculates the required current and the required time to which the required current is applied by devices that must be operated in the vehicle after the vehicle is started off, and calculates the requested current and the requested time to the determination unit 12 And transmit (S43).

In S43, the calculator 11 may calculate the required current of the SMK module as 800 mA and the time at which the requested current should be applied to 336 hours, the required current of the I-Box as 500 mA, and the time at which the requested current should be applied 168 It can be calculated as time, and the required current of lamp control can be calculated as 1A and the time at which the requested current should be applied can be calculated as 12 hours.

The determination unit 12 sets a priority based on the calculated request current and request time (S44).

The priority set by the determination unit 12 in S44 may mean an order in which the time for which the requested current is to be applied is long. For example, the determination unit 12 may set the priority in order of SMK module, I-Box, and lamp controller.

Then, the determination unit 12 transmits the set priority to the control unit 13 (S45).

At this time, the determination unit 12 determines the vehicle update, and if it is determined that the vehicle has been updated, the calculation unit 11 adds the device to be updated as a new device (S46).

Vehicle update may be performed in an OTA (Over The Air) method, where OTA may refer to a wireless communication method established to transmit and receive information regarding vehicle system registration from a server. Vehicle update according to an embodiment of the present invention may include an update of the AVN device.

The calculating unit 11 calculates the required current and the required time to which the requested current of the added new device is to be applied and transmits it to the determination unit 12 (S47).

In S47, when the new device added due to the vehicle update is the AVN, the calculator 11 may calculate the required current of the AVN as 300mA and the time at which the requested current should be applied as 0.5 hours.

The determining unit 12 may variably set the priority based on the requested current and the requested time of the new device received from the calculating unit 11 (S48).

Since the determination unit 12 updates the OTA method at the time when the vehicle starts off, when a new device is added, the priority is variably set by reflecting the current and time required for the new device. The power of the devices is not cut off according to the priority, but the power is cut off according to the priority in which the newly added new device is reflected.

That is, when the AVN device is updated by the OTA method when the vehicle starts off, the determination unit 12 may variably set the priority by reflecting the current and time required to update the AVN.

Then, the determination unit 12 transmits the variablely set priority to the control unit 13 (S49).

The control unit 13 sets the power-off time sequence based on the priority set by the determination unit 12 variably, and cuts off the power of the device according to the set power-off time sequence (S50).

The power-off time may refer to a time when a time at which the required current of the device should be applied has elapsed from the time when the vehicle is started off.

In S50, the controller 13 may set the power-off time sequence in the order in which the time at which the requested current is to be applied is short.

For example, the control unit 13 is the power-off time T1 before the priority is variably set in the determination unit 12 is the time to cut off the power of the lamp controller, T2 is the time to cut off the power of the I-Box, T3 is It can be set as the time to power off the SMK module.

However, according to an embodiment of the present invention, since the control unit 13 sets the sequence of the power-off time based on a variablely set priority, NT can be newly set before the power-off time T1, and NT powers the AVN device. It can mean the time to cut off.

5 is a graph showing dark current control according to an embodiment of the present invention.

As shown in FIG. 5, the control unit 13 may set the power-off time before the priority is variably set in the determination unit 12 to T1 to T4. The power-off time set by the control unit 13 is according to the embodiment and is not limited to T1 to T4. Here, T1 may mean a time for powering off the lamp controller, T2 for a time for powering off the I-Box, and T3 for a time for powering off the SMK module.

As described above, when the power of the device is cut off according to the power cutoff time set to T1 to T4, the power is cut off sequentially at T1 to T4 as in 'A', thereby reducing the dark current.

According to an embodiment of the present invention, since the control unit 13 sets the order of the power-off time based on the variablely set priority, NT may be newly set before the power-off time T1, for example, NT is the power of the AVN device. It can mean time to cut off.

Accordingly, when the power of the device is sequentially cut off from the newly set NT to T4, the power is cut off sequentially from NT to T4 as shown in 'B', so that the dark current can be reduced.

In the present invention, when an update is performed in an OTA manner when a vehicle is started off and a new device is added, the priority is previously set because the priority is variably set by reflecting the current and time required for the new device. The power of the devices is not cut off according to the power cut-off time set as a basis, and the power can be cut off according to the power cut-off time set based on the priority reflected by the newly added new device.

5 is a diagram illustrating a configuration of a computing system executing a method according to an embodiment of the present invention.

Referring to FIG. 5, the computing system 1000 includes at least one processor 1100, a memory 1300, a user interface input device 1400, a user interface output device 1500, and storage (connected through a bus 1200) 1600), and a network interface 1700.

The processor 1100 may be a central processing unit (CPU) or a semiconductor device that executes processing for instructions stored in the memory 1300 and / or storage 1600. The memory 1300 and the storage 1600 may include various types of volatile or nonvolatile storage media. For example, the memory 1300 may include read only memory (ROM) and random access memory (RAM).

Thus, steps of a method or algorithm described in connection with the embodiments disclosed herein may be directly implemented by hardware, software modules, or a combination of the two, executed by processor 1100. The software modules reside in storage media (ie, memory 1300 and / or storage 1600) such as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM. You may. An exemplary storage medium is coupled to the processor 1100, which can read information from and write information to the storage medium. Alternatively, the storage medium may be integral with the processor 1100. Processors and storage media may reside within an application specific integrated circuit (ASIC). The ASIC may reside in a user terminal. Alternatively, the processor and storage medium may reside as separate components within the user terminal.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and variations without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the claims below, and all technical spirits within the equivalent range should be interpreted as being included in the scope of the present invention.

Device 10
Output 11
Judgment 12
Control 13
Switch part 14
Battery 15
Processor 1100
Bus 1200
Memory 1300
ROM 1310
RAM 1320
User interface input device 1400
User interface output device 1500
Storage 1600
Network interface 1700

Claims (20)

A calculation unit for calculating a request current of a plurality of devices provided in the vehicle and a request time to which the request current is to be applied when the vehicle is started off;
Priority is set based on the calculated required current and the requested time, but when the requested current of the new device is additionally generated, the priority is reflected by reflecting the requested current of the new device and the requested time to which the requested current should be applied. A determination unit for variably setting the ranking; And
A dark current control device for a vehicle including a control unit for turning off the power of the plurality of devices and the new device based on the variably set priority. The method according to claim 1,
The plurality of devices
A dark current control device for a vehicle including devices that must be operated in the vehicle for the required time after the vehicle is turned off. The method according to claim 1,
A dark current control device for a vehicle, including a case in which a vehicle update is performed when the required current of the new device is additionally generated. The method according to claim 3,
The vehicle update is a dark current control device for a vehicle that is performed by OTA (Over The Air) method. The method according to claim 3,
The vehicle update includes an update of the AVN device Dark current control device of the vehicle. The method according to claim 1,
The dark current control device of the vehicle, wherein the required current and the requested time of the added new device are calculated from the calculation unit. The method according to claim 1,
The priority and the variably set priority is a dark current control device for a vehicle that is set in the order in which the request time is long. The method according to claim 1,
The control unit
A dark current control device for a vehicle including a plurality of switches for controlling power-off of the plurality of devices. The method according to claim 1,
The control unit
A dark current control device for a vehicle including a plurality of switches for controlling power-off of the plurality of devices. The method according to claim 9,
The power cut-off time sequence is a dark current control device for a vehicle that is set in a short order in which the time at which the requested current should be applied. Calculating a request current of a plurality of devices provided in the vehicle and a request time to which the request current is to be applied when the vehicle is started off;
Priority is set based on the calculated demand current and the request time, but when a request current of the new device is additionally generated, the priority is reflected by reflecting the request current of the new device and the request time to which the request current must be applied. Variably setting; And
And powering off the plurality of devices and the new device based on the variably set priority. The method according to claim 11,
The plurality of devices
A method for controlling dark current of a vehicle including devices that must be operated in the vehicle for the required time after the vehicle is turned off. The method according to claim 11,
A method of controlling a dark current of a vehicle, including when a vehicle update is performed when the required current of the new device is additionally generated. The method according to claim 13,
The vehicle update is a dark current control method of the vehicle is performed by OTA (Over The Air) method. The method according to claim 13,
The vehicle update is a method of controlling a dark current of a vehicle including an update of an AVN device. The method according to claim 11,
And when the required current of the new device is additionally generated, calculating the required current and the required time of the added new device. The method according to claim 11,
The priority and the variably set priority is a dark current control method of the vehicle is set in the order that the request time is long. The method according to claim 11,
The step of turning off the power of the plurality of devices and the new device is
A control method for a dark current of a vehicle, which is controlled through a plurality of switches connected to the plurality of devices. The method according to claim 11,
The step of turning off the power of the plurality of devices and the new device is
A dark current control method of a vehicle that sets a power-off time sequence based on the variably set priority and cuts off the power of the plurality of devices and the new device according to the power-off time sequence. The method according to claim 19,
The power-off time sequence is a vehicle dark current control method that is set in the order in which the time to which the required current is applied is short.

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