KR20070016385A - Dark current control system and method thereof - Google Patents

Abstract

The present invention relates to a dark current control system and a method thereof, and more particularly, in a key off state of a vehicle, power supply is stopped after the final data of the electronic device of the vehicle is backed up, and the vehicle is turned on. ), By supplying power to the electronic device and transmitting the backed up data, it is possible to prevent the battery discharge due to dark current by maintaining the electronic device of the vehicle with the minimum current, and to reduce the discharge amount of the battery. The present invention relates to a dark current control system and a method for minimizing the life of a battery and reducing the battery capacity to increase fuel economy according to a weight reduction of a vehicle.

In the conventional invention, after a certain time such as MTS, the vehicle system is down and can no longer be used in the vehicle's key off state. On the other hand, the invention as described above has the advantage that, even after a long time, the drive signal is input without input of the vehicle system, the operation can be started immediately, so that stable power supply can be provided even when the vehicle is left for a long time to provide good performance. Has

Vehicle, Relay, PIC, Smart Key, Telematics, Dark Current, Battery

Description

Dark current control system and its method {DARK CURRENT CONTROL SYSTEM AND METHOD THEREOF}

1 is a schematic configuration diagram of a power supply control system installed in a conventional vehicle.

2 is a schematic diagram of a dark current control system according to the present invention.

3 is an internal configuration diagram of the dark current control module of the dark current control system according to the present invention.

4 is a flowchart illustrating a dark current control process according to the present invention.

* Explanation of symbols for the main parts of the drawings

10: battery 20: power connector

30: electronic device 32: first electronic device

34: second electronic device 36: third electronic device

38: fourth electronic device 40: relay unit

42: first relay unit 44: second relay unit

100: dark current control module 110: signal detection unit

120: data management unit 130: backup data DB

140: relay drive unit 150: microcomputer

160: power supply unit 200: PIC unit

220: smart key system 300: telematics system

The present invention relates to a dark current control system and a method thereof, and more particularly, in the key OFF state of a vehicle, the final data of the electronic device provided in the vehicle is backed up and the power supply is stopped, and the vehicle is turned on. ON), the power supply to the electronic device and transmits the backed up data to maintain the electronic device of the vehicle with a minimum current to prevent the battery current caused by the dark current in advance and the method It is about.

In general, dark current refers to a current flowing through a load or a line connected when a current conduction path is formed between a power generating unit and a load even when power consumption is not generated. Although the internal resistance of the battery increases small, the power generated by the battery is weakened.

Such a phenomenon is particularly severe in the case of a rechargeable battery, and when the battery is used for a long time without being used in an electronic device such as a cassette tape recorder or an electric shaver, the charge charge of the battery is long. This is a phenomenon often seen in the surroundings, such as when all the discharged, the electronic device does not work.

Moreover, in recent years, the only means for supplying the driving power to the electronic device equipped with the battery in a vehicle that is used a lot of electronic devices, the vehicle battery is for charging, so the life of the battery without limiting the dark current as described above You won't last long. Accordingly, in recent years, a policy of regulating the dark current versus the battery capacity of each vehicle has been proposed.

Hereinafter, a conventional vehicle power control system will be described with reference to the accompanying drawings.

1 is a schematic configuration diagram of a general power supply control system installed in a conventional vehicle.

Referring to the drawings, in general, the main component that supplies or cuts power to the electronic device 30 provided in the vehicle is a battery 10, the battery 10 and the various electronic devices 30 to connect The power connector 20 is provided so that the power stored in the battery 10 can be supplied to various electronic devices 34, 36, 38 mounted in the vehicle, and some of the electronic devices 32 are provided with the power supply. The circuit is configured to receive power directly from the battery 10 without going through the connector 20.

The power connector 20 can be detached when the vehicle is not in operation for a long time or when the power supply is stopped for repair of a vehicle, and can be attached when driving the vehicle again, thereby preventing battery discharge due to a dark current. It is provided to be.

However, a vehicle battery generally used as described above has a dark current of about 20 to 30 mA continuously flowing to the electronic device 30 even when the vehicle is turned off. This causes the battery 10 to be over-discharged, which makes it difficult to start later.

In addition to the case where the battery 10 is discharged by the dark current when the vehicle is left for a long time, the battery 10 may be discharged when the headlamp or the fog lamp is turned on for a long time while the ignition is turned off due to the driver's carelessness. Frequently occurring problems have arisen. In particular, in the case of an export vehicle, the electronic device 32, which is separately connected to the power connector 20, is left unstarted for a long time despite the removal of the power connector 20. Discharge often occurred, and therefore, there is a limit in reducing the capacity or size of the battery 10.

The present invention has been proposed to solve the above problems, and in the key OFF state of the vehicle, the power supply is stopped after the final data of the electronic device of the vehicle is backed up, and the vehicle is in the key ON state. By supplying power to the electronic device and transmitting the backup data, the electronic device of the vehicle can be maintained with a minimum current to prevent battery discharge due to dark current, and also minimize the discharge amount of the battery. It is an object of the present invention to provide a dark current control system and a method which can extend the life of the battery, and thus can reduce the battery capacity, thereby improving fuel economy according to the weight reduction of the vehicle.

In addition, in the conventional invention, after a certain time such as MTS, the vehicle system is down and can no longer be used in the key off state of the vehicle. On the other hand, the invention as described above, can be operated immediately if a drive signal is input without a down of the vehicle system even after a long time, it is possible to provide a stable power supply even when the vehicle is left for a long time can provide good performance Has the advantage that

In addition, by using the system as described above, it is possible to develop each module of the vehicle system in the future without constraints due to dark current, and does not need a separate circuit for dark current control, thereby reducing development costs by shortening the development period. It also has the advantage of being possible.

In order to achieve the above object, the present invention describes a dark current control system and method for controlling dark current to a minimum, and also proposes an internal configuration of a dark current control module for achieving the above processes.

In order to control the dark current, the present invention is provided in a battery and a vehicle for supplying power to the vehicle, and can be attached to and detached from a plurality of electronic devices operating by receiving power from the battery, and one end thereof is connected to the positive terminal of the battery. The other end is driven according to the signal transmitted from the power connector connected to the relay unit and the dark current control module to monitor the signal transmitted from the relay unit and the smart key system that supplies or cuts power to the electronic device and sends the signal to the dark current control module. And a dark current control module for controlling power supply of various electronic devices by controlling a relay unit according to a PIC unit to be transmitted and a signal received from the PIC unit.

In addition, the dark current control method in the dark current control system monitors the smart key system in the PIC unit, and if the operation signal is not detected from the smart key system for a predetermined time, the PIC unit transmits a 'power off signal' to the dark current control module. And the dark current control module receiving the 'power off signal' receives final data from various electronic devices, stores the final data in a DB, turns off the relay unit, and cuts off power supply to the connected electronic device, and the PIC unit. Monitors the smart key system, and when an operation signal is detected from the smart key system, transmitting a 'power supply signal' to the dark current control module, and the dark current control module receiving the 'power supply signal' drives the relay unit. Power the electronic device and transfer the final data stored in the DB to the corresponding electronic device. A step of.

In another embodiment, the present invention for controlling the dark current is provided in the battery and the vehicle for supplying power to the vehicle, it is possible to attach and detach with a plurality of electronic devices operating by receiving power from the battery, The other end is connected to the positive terminal of the battery, the other end is driven according to the signal transmitted from the power connector and the dark current control module connected to the relay unit to receive a signal from the relay unit and a telematics system for supplying or cutting off power to the electronic device relay unit It is provided with a dark current control module for controlling the power supply of various electronic devices.

In addition, the dark current control method of the dark current control system, the telematics system monitors the vehicle in real time, if it is detected that the driver is away from the vehicle, transmitting a 'power off signal' to the dark current control module, and the 'power off The dark current control module receiving the signal 'receives the final data from the various electronic devices and stores it in the backup data DB, turns off the relay unit to cut off the power supply to the connected electronic device, and the telematics system monitors the vehicle in real time. When the driver detects the approach to the vehicle, transmitting the 'power supply signal' to the dark current control module, and the dark current control module receiving the 'power supply signal' drives the relay unit to supply power to the electronic device. Transfers the final data stored in the backup data DB to the relevant electronic device The sending may be done.

Preferably, the dark current control module backs up the final data of the signal detection unit and various electronic devices that receive the power supply signal or the power cutoff signal from the PIC unit or the telematics system, and transmits the backed up data to the corresponding electronic device. Data management unit and backup data DB for storing the backup data received from the various electronic devices, the relay driver to turn on and off the relay unit by sending a signal to the relay unit and the power supplied from the battery of the vehicle safe to the dark current control module It is characterized by consisting of a power supply and a microcomputer to control the respective components so as to supply power.

Hereinafter, with reference to the accompanying drawings, the most preferred embodiment of the present invention will be described in detail as follows.

2 is a schematic diagram of a dark current control system according to the present invention.

Prior to describing the drawings, the smart key system, which is emerging these days, is a system in which a sensor embedded in a vehicle automatically recognizes a driver having a smart key so that a door can be opened without using a key. . Accordingly, in the current vehicle system, if the smart key is possessed, a system capable of starting the vehicle simply by turning the start switch without inserting the key has been introduced.

In addition, a telematics system that can provide the driver with vehicle accidents, theft detection, driving directions, traffic and life information in real time by incorporating mobile communication technology and location tracking technology into the vehicle is also rapidly related to the vehicle. Is developing.

In the present invention, the smart key system or the telematics system is applied to detect that the vehicle is not operated or driven for a predetermined time, and transmits it to the dark current control module so that power supplied to various electronic devices can be turned on and off.

Referring to the drawings, the dark current control system according to the present invention includes a battery 10 for supplying power to a vehicle, a plurality of electronic devices 30 provided in the vehicle, and a front end of the electronic devices 34, 36, 38. Detachable power supply connector 20 that can cut off the dark current at the time of export, the relay unit 40 for receiving a signal from the dark current control module to turn on and off the power supplied to the electronic device 30, and detects the operation of the vehicle As a result, the dark current control module 100 controls the driving of the relay unit 40 to control the power supply of the various electronic devices 30.

In the present invention, in addition to monitoring the signal transmitted from the smart key system 220 in order to detect the operation of the vehicle, when the signal is not detected for a certain period of time 'power off signal' or 'power supply to the dark current control module It may be further provided with a PIC unit 200 for transmitting a signal. In another embodiment, the present invention detects the operating state of the vehicle in real time and when the driver is detected to move away from the vehicle telematics system for transmitting a 'power off signal' or 'power supply signal' to the dark current control module 100 300 may be provided.

When the dark current control module 100 transmits a 'power off signal' from the PIC unit 200 or the telematics system 300, the dark current control module 100 backs up the final data from various electronic devices 30 and receives the relay unit 40. The power supply to the various electronic devices 30 may be cut off so that the current supplied by the vehicle to the electronic devices may be minimized. In detail, since power is supplied only to the two components, the PIC unit 200 and the dark current control module 100, it is possible to prevent the discharge of the battery by consuming only the minimum current.

In addition, when a 'power supply signal' is transmitted from the PIC unit 200 or the telematics system 300, the relay unit 40 is turned on to supply power to various electronic devices, and various electronic devices 30 By transmitting the final data backed up from), it is possible to operate immediately if only the drive signal is input without down of the vehicle system even after a long time, thereby providing good startability.

The relay unit 40 may connect the first relay unit 42 and the power connector 20 positioned in front of the first electronic device 32 to receive power from the battery 10 without passing through the power connector 20. The second relay unit 44 located at the front end of the other various electronic devices 34, 36, and 38 that make a phone call may be configured. Accordingly, the relay unit 40 may selectively turn on and off power supplied to the various electronic devices 30 by receiving a signal from the dark current control module.

In more detail, Figure 3 is an internal configuration of the dark current control module according to the present invention.

Referring to the drawings, the dark current control module 100 according to the present invention receives a 'power supply signal' or 'power off signal' from the PIC unit 200 or the telematics system 300 and transmits it to the microcomputer. 110, a data manager 120 for backing up the final data from the various electronic devices 30 and transmitting the final data back to the corresponding electronic device 30, and the data manager 120 from the various electronic devices 30. A backup data DB 130 for storing the received backup data, a relay driver 140 for driving the relay by transmitting an on-off signal to the relay unit 40 according to a command of the microcomputer, and a microcomputer for controlling the respective components. It consists of 150. In addition, the power supply unit 160 may be additionally provided to receive power from the battery 10 of the vehicle so as to supply safe power to the dark current control module 100.

When the microcomputer 150 transmits a 'power off signal' from the signal detecting unit 110, the microcomputer 150 adjusts the data managing unit 130 to back up the final data from the electronic device 30, and sends the relay driving unit 140 to the relay driving unit 140. It serves to cut off the power supplied to the electronic device 30 by adjusting. In addition, when a 'power off signal' is transmitted from the signal detecting unit 110, the relay driving unit 140 is adjusted to supply power to the electronic device 30, and the data managing unit 130 is adjusted to control the electronic device. It serves to transmit the backup data to 30.

When the 'power off signal' is transmitted from the microcomputer, the data manager 120 receives final data from various electronic devices 30 and stores the final data in the backup data DB 130, and transmits the 'power supply signal' from the microcomputer. Is transmitted to the electronic device 30 to transmit the backup data stored in the backup data DB (130).

4 is a flowchart illustrating a dark current control process according to the present invention.

Referring to the drawings, first, the PIC unit monitors whether a motion signal is not detected from the smart key system for a predetermined time, or in a telematics system, the driver turns off the vehicle and moves away from the vehicle in real time. Monitor (S102).

If the operation signal is not detected from the smart key system for a predetermined time (S104), the PIC unit transmits a 'power off signal' to the dark current control module (S106). Or, if the driver turns off the ignition and moves away from the vehicle, the telematics system sends a 'power off signal' to the dark current control module.

The signal detection unit of the dark current control module receives the 'power off signal' and transmits it to the microcomputer of the dark current control module, and the microcomputer commands the data management unit of the dark current control module to receive final data from various connected electronic devices. This is stored in the backup data DB (S108).

When the final data values of the various electronic devices are stored in the backup data DB, the microcomputer of the dark current control module issues a command to the relay driving unit to turn off the first relay unit and the second relay unit located at the front of the electronic device to connect the various electronic devices. To cut off the power supply (S110).

At this time, the vehicle is monitored and the power is supplied only to the two components, the PIC unit and the dark current control module, so that only the driving signal can be operated immediately. Can be.

Subsequently, the PIC unit monitors whether an operation signal is detected from the smart key system, or the telematics system monitors whether the driver returns to the vehicle (S112). When the operation signal is detected from the smart key system or the driver is returned to the vehicle (S114), the PIC unit or the telematics system transmits a 'power supply signal' to the dark current control module (S116).

The signal detecting unit of the dark current control module receiving the 'power supply signal' transfers it to the microcomputer of the dark current control module, and the microcomputer commands the relay driving unit to drive the relay unit to supply power to various electronic devices (S118), Command the data management unit to supply power to the electronic device and at the same time transfer the final data stored in the backup data DB to the corresponding various electronic devices (S120) to allow the vehicle to operate smoothly (S122). can do.

As mentioned above, although this invention was demonstrated in detail using the preferable Example, the scope of the present invention is not limited to a specific Example and should be interpreted by the attached Claim. In addition, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

As described above, the present invention backs up the data of the electronic device of the vehicle and stops the power supply in the key OFF state. When the vehicle is in the key ON state, the present invention provides power to the electronic device. By supplying the data backed up and maintaining, the electronic device of the vehicle can be maintained with the minimum current to prevent battery discharge due to dark current, and the battery life can be extended by minimizing the discharge of the battery. It is possible to reduce the battery capacity accordingly has the advantageous effect of the fuel economy increase effect according to the weight reduction of the vehicle.

In addition, in the conventional invention, after a certain time such as MTS, the vehicle system is down and can no longer be used in the key off state of the vehicle. On the other hand, the invention as described above, can be operated immediately if a drive signal is input without a down of the vehicle system even after a long time, it is possible to provide a stable power supply even when the vehicle is left for a long time can provide good performance That has the beneficial effect.

In addition, by using the system as described above, it is possible to develop each module of the vehicle system in the future without constraints due to dark current, and does not need a separate circuit for dark current control, thereby reducing development costs by shortening the development period. It has the effect of being possible.

Claims (11)

The battery that powers the vehicle A plurality of electronic devices provided in a vehicle and operated by receiving power from the battery; Removable, one end is connected to the positive terminal of the battery, the other end and the power connector connected to the relay unit A relay unit driven according to a signal transmitted from a dark current control module to supply or cut off power to an electronic device; PIC unit for monitoring the signal transmitted from the smart key system and transmitting the signal to the dark current control module; Dark current control module for controlling the power supply of various electronic devices by controlling the relay unit in accordance with the signal received from the PIC unit Dark current control system, characterized in that consisting of. The method of claim 1, wherein the dark current control module A signal detection unit receiving a 'power supply signal' or a 'power off signal' from the PIC unit; Data management unit for backing up the final data of the various electronic devices, and transfer the backed up data to the corresponding electronic device; A backup data DB for storing the backup data received from the various electronic devices by the data manager; A relay driver for transmitting a signal to the relay to turn the relay on and off; Micom to control the above components Dark current control system, characterized in that consisting of. The method according to claim 1 or 2, The PIC unit monitors the smart key system, If the operation signal is not detected from the smart key system for a certain time, transmit a 'power off signal' to the dark current control module, When the operation signal is transmitted from the smart key system, transmitting a 'power supply signal' to the dark current control module Dark current control system, characterized in that. The battery that powers the vehicle A plurality of electronic devices provided in a vehicle and operated by receiving power from the battery; Removable, one end is connected to the positive terminal of the battery, the other end and the power connector connected to the relay unit A relay unit driven according to a signal transmitted from a dark current control module to supply or cut off power to an electronic device; Dark current control module that controls the power supply of various electronic devices by controlling the relay part by receiving signal from telematics system Dark current control system, characterized in that consisting of. The method according to claim 4, wherein the dark current control module Signal detection unit for receiving a 'power supply signal' or 'power off signal' from the telematics system and A data management unit which backs up the final data of various electronic devices and transmits the backed up data to a corresponding electronic device; A backup data DB for storing the backup data received from the various electronic devices by the data manager; A relay driver for transmitting a signal to the relay to turn the relay on and off; Micom to control the above components Dark current control system, characterized in that consisting of. The method according to claim 4 or 5, The telematics system monitors the operating state of the vehicle in real time When the driver detects a distance from the vehicle, it transmits a 'power off signal' to the dark current control module. When the driver detects a return to the vehicle, it transmits a 'power supply signal' to the dark current control module. Dark current control system, characterized in that. The method according to claim 2 or 5, The dark current control module Power supply unit to supply safe power to dark current control module by receiving power from battery of vehicle Dark current control system, characterized in that is further provided. The first step of monitoring the smart key system in the PIC unit, if the operation signal is not detected from the smart key system for a predetermined time, the PIC unit transmits a 'power off signal' to the dark current control module. A second step in which the dark current control module receiving the 'power off signal' receives final data from various electronic devices, stores the final data in a DB, and turns off the relay unit to cut off power supply to the connected electronic device; A third step of monitoring the smart key system in the PIC unit and transmitting a 'power supply signal' to the dark current control module when an operation signal is detected from the smart key system A fourth step in which the dark current control module receiving the 'power supply signal' drives the relay unit to supply power to the electronic device and transmit the final data stored in the DB to the corresponding electronic device; Dark current control method characterized in that consisting of. The first step in which the telematics system monitors the vehicle in real time and transmits a 'power off signal' to the dark current control module when the driver is detected to be away from the vehicle. The second step in which the dark current control module receiving the 'power off signal' receives final data from various electronic devices, stores the final data in the backup data DB, and turns off the relay unit to cut off the power supply to the connected electronic device. The third step in which the telematics system monitors the vehicle in real time and transmits a 'power supply signal' to the dark current control module when it detects that the driver is approaching the vehicle. A fourth step in which the dark current control module receiving the 'power supply signal' drives the relay unit to supply power to the electronic device and transmit the final data stored in the backup data DB to the corresponding electronic device; Dark current control method characterized in that consisting of. The method according to claim 8 or 9, in the second step Step 2-1 of the signal detection unit of the dark current control module receiving the 'power off signal' to the microcomputer Step 2-2, the microcomputer receives the final data from various electronic devices connected to the data management unit and stores the final data in the backup data DB. Step 2-3 in which the microcomputer commands the relay driver to turn off the relay to cut off the power supply to the connected electronic device Dark current control method characterized in that consisting of. The method of claim 8 or 9, Signal detection unit receiving the 'power supply signal' transfers it to the microcomputer step 4-1 The microcomputer commands the relay driver to drive the relay unit to supply power to the electronic device. Step 4-3 in which the microcomputer commands the data manager to transmit the final data stored in the backup data DB to the corresponding electronic device. Dark current control method characterized in that consisting of.

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