KR20180004478A - Background Current Prevent System for Enhancing Re-Starting Performance of Vehicle - Google Patents

Abstract

The present invention relates to a background current prevention system for enhancing re-starting performance of a vehicle and, more specifically, relates to technique to secure re-starting performance of a vehicle by effectively preventing a background current leading to battery discharge of the vehicle. Moreover, before selling a vehicle, a conventional background current prevention system prevents battery discharge in a long-term shipment or piling-up step. The present invention relates to technique to prevent battery discharge while a vehicle is actually driven.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a background current preventive system for enhancing re-

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a dark current blocking system in which the restartability of a vehicle is enhanced,

The present invention relates to a technology for efficiently shutting off a dark current which causes a battery discharge of a vehicle, thereby ensuring re-startability of the vehicle. Furthermore, the conventional dark current blocking system is a technique for blocking battery discharge during a long-term shipment or a full-charge stage before a vehicle is sold, and is thus vulnerable to dark current management in the use of a vehicle room. On the other hand, And to a technique for preventing such a problem.

Generally, a power source provided in a vehicle is configured to be supplied by a battery power source and a generator power source, and the power source of the battery is used to drive a starter motor at an initial start or to supply power at an engine stop.

However, the amount of electric power that can be supplied only to the vehicle battery is limited because the charging capacity of the vehicle battery is limited. Therefore, when power is supplied to the vehicle with only the battery for a long time in a state where the engine of the vehicle is stopped and the power supply from the generator is not performed, the battery is discharged.

In addition, even if the vehicle battery is not used directly, the discharge is continuously performed. Therefore, when the vehicle is left for a long time, the battery is completely discharged, so that the problem that the restartability is not ensured arises. These cases are often seen around us, and for beginners who have not experienced the discharge of the vehicle battery, it can be very difficult to respond directly to the situation. In addition, in the case of a commercial vehicle, if it is impossible to take immediate action (jump charge, etc.), it may lead to financial damage due to inability to operate.

Meanwhile, recently developed vehicles are equipped with a number of convenience devices or network controllers that operate at all times by using the vehicle battery power in the vehicle. In addition to consuming a lot of battery power in use, The battery discharge is promoted due to the background current. The dark current refers to a current continuously supplied so that operation is not stopped even when the vehicle is turned off or the power supply is shut off.

Therefore, a dark current blocking system for blocking the dark current generated in various devices is known and used. Fig. 1 schematically shows a conventional dark current interruption circuit.

However, since the conventional dark current cut-off circuit shown in FIG. 1 is designed to block the lamp load only for the purpose of preventing battery discharge until the point of sale after manufacture of the vehicle, Is a difficult configuration. In addition, since the fuse switch is used, the reliability of the contact point is poor in structure. Further, when the relay is used, unwanted current is generated at the coil of the relay, which lowers the overall efficiency.

Therefore, it is required to develop a technique for securing the restartability of the vehicle by preventing the battery discharge caused by various devices commonly installed in the vehicle and overcoming the disadvantages of the conventional dark current interruption circuit.

The present invention has been made to solve the above problems,

The present invention relates to a technology for efficiently shutting off a dark current which causes a battery discharge of a vehicle, thereby ensuring re-startability of the vehicle. Furthermore, the conventional dark current blocking system is a technique for blocking battery discharge during a long-term shipment or a full-charge stage before a vehicle is sold, and is thus vulnerable to dark current management in use in a vehicle room. Thereby preventing battery discharge.

According to an aspect of the present invention,

A can current communication system comprising: a can communication module connected to a can communication line of a vehicle and performing can communication with an in-vehicle electronic control module; A local switch module connected to a local switch of the vehicle and receiving a switching signal of the local switch; At least one latch relay which is turned on and off to control a current applied to at least one load of the vehicle, respectively; And a microcomputer for performing a dark current shutdown logic according to a signal received from any one of the can communication module and the local switch module, wherein the dark current shutdown logic controls the at least one latch relay to control the at least one load And is a logic that cuts off an applied current.

The microcomputer is connected to the cluster system of the vehicle through the can communication module and is configured to modify the setting of the dark current shutdown logic of the microcomputer by using the input device of the cluster system.

The microcomputer monitors the battery SOC by receiving a battery SOC signal of the vehicle from the can communication module. When the battery SOC falls below a preset value, the microcomputer stops the current applied to the at least one load And at least one latch relay is controlled.

The first control mode and the second control mode at the time of long-term parking are pre-set in the microcomputer, and the dark current blocking logic of the first control mode and the second control mode are set differently from each other, And the control mode and the second control mode can be set through the cluster system of the vehicle in cooperation with the can communication module.

Further, the at least one load is characterized in that one latch relay is assigned to one load.

In addition, the dark current shutdown logic set in the microcomputer may control the at least one latch relay to shut off the current applied to the at least one load due to an entry condition received from at least one of the switch module and the can communication module .

The entry condition may include at least one signal selected from the group consisting of a Key Off signal, a door lock setting signal, a door closing signal, a battery SOC signal, an external temperature signal, or an anti-theft setting signal .

Also, the dark current shutdown logic set in the microcomputer may control the at least one latch relay to apply power to the at least one load according to a release condition received from at least one of the switch module and the can communication module .

The release condition may include at least one signal selected from the group consisting of a key on signal, a door unlock signal, a door open signal, a brake switch signal, or an emergency light switch signal.

According to the above-described configuration, the dark current blocking system enhancing the re-startability of the vehicle of the present invention provides the following characteristic advantages.

1) It is possible to effectively prevent the discharge of the battery by blocking the dark current which causes the battery discharge of the vehicle by optimizing the state of the vehicle through the configuration in which the dark current of the vehicle is blocked by the different logic at the time of general use and long- And thus provides an advantage of securing the restartability of the vehicle.

2) In addition, the present invention provides a dark current shutdown system according to a general use mode and a long-term parking mode of a vehicle, thereby preventing battery discharge in a process of using an actual vehicle, There is an effect of solving all of the disadvantages due to the battery discharge prevention technology limited to the long-term shipment or stacking stage before the sale is made.

3) Finally, the fuse switch included in the conventional dark current blocking system of the present invention is eliminated, and the current applied to the load is controlled through the latch relay, so that the use inconvenience Performance and low-contact reliability.

Fig. 1 schematically shows a conventional dark current interruption circuit.
FIG. 2 shows a circuit configuration of a dark current blocking system in which the re-startability of a vehicle is enhanced according to a preferred embodiment of the present invention.
3 shows a cluster screen displayed to set the operating mode of the dark current shutdown logic using a user setup menu USM in a cluster of vehicles as an input module according to a preferred embodiment of the present invention.
4 is a table showing one embodiment of the dark current blocking logic.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The word is described based on the principle that the inventor can properly define the concept of a term in order to explain his or her invention in the best way. The word is interpreted as a meaning and concept consistent with the technical idea of the present invention. . Therefore, the embodiments described in this specification and the technical structures shown in the drawings are only the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It should be understood that various equivalents and modifications are possible. In addition, the terms used herein are used for the purpose of easy understanding of specific embodiments, and are not intended to limit the present invention. It is to be understood that the elements described in the singular form in this specification include plural forms unless otherwise specified.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a dark current blocking system that enhances re-startability of a vehicle, and more particularly, to a technique for effectively preventing a dark current from causing battery discharge in a vehicle, thereby ensuring re-startability of the vehicle. Furthermore, the conventional dark current blocking system is a technique for blocking battery discharge during a long-term shipment or a full-charge stage before a vehicle is sold, and is thus vulnerable to dark current management in the use of a vehicle room. On the other hand, And to a technique for preventing such a problem.

Hereinafter, the present invention having such a basic configuration as described above will be described in detail with reference to the drawings.

FIG. 2 shows a circuit configuration of a dark current blocking system in which the re-startability of a vehicle is enhanced according to a preferred embodiment of the present invention.

As shown in the figure, the dark current shutdown system with enhanced restartability of the vehicle according to the present invention is connected to each of load groups composed of various loads 50, 51 and 52 in the vehicle, At least one latch relay (20, 21, 22) that is turned on / off to control each of the at least one latch relay (20, 21, 22) And a microcomputer 10 for performing the operation.

A local switch module 30 connected to the local switch of the vehicle for receiving the switching signal of the local switch and inputting the switching signal to the microcomputer 10, And a can communication module (40) for inputting vehicle information to the microcomputer (10).

In the preferred embodiment of the present invention, the local switch module 30 and the CAN communication module 40 are connected to the microcomputer 10, but are not limited thereto. The microcomputer 10 Or may be configured as a modularized component.

The microcomputer 10 controls the at least one latch relay 20, 21, 22 to block the current applied to the load group of the vehicle, thereby blocking the dark current. To this end, the microcomputer 10 performs predetermined dark current shutdown logic do. The microcomputer 10 (microcontroller unit (MCU)) is a dedicated processor for controlling a specific system, and is a non-memory semiconductor (system semiconductor) device used in most electronic devices and acting as a brain.

The latching relay uses an iron core having a large coercive force so that the magnetic force is maintained even after the operation of the contact breaks the exciting current. It is a well-known relay suitable for returning and controlling by pulse. Since the latch relays 20, 21 and 22 operate at a low electric power, the latch relays 20, 21 and 22 are used in place of the conventional general relays so that the electric power of the closed circuit system The efficiency can be increased. The present invention is configured to block the dark current by applying latch relays (20, 21, 22) to each of the loads (50, 51, 52) instead of the general relay applied to the conventional dark current blocking system. Advantageously, said at least one load (50, 51, 52) is assigned one latch relay per load.

The dark current shutdown logic to be set in the microcomputer 10 is controlled by the microcomputer 10 so that the at least one latch relay 20, To thereby effectively block the dark current in the vehicle.

More specifically, the closed-circuit current shut-down logic is used to shut off the current applied to the at least one load (50, 51, 52) by the entry condition received from at least one of the switch module or the can communication module Logic for controlling said at least one latch relay (20, 21, 22)

Here, the entry condition includes at least one signal selected from the group consisting of a key off signal, a door lock setting signal, a door closing signal, a battery SOC signal, an external temperature signal, or an anti-theft setting signal .

In the preferred embodiment of the present invention, the entry condition of the dark current shutdown logic set in the microcomputer 10 may be the battery SOC capacity in the vehicle. To this end, the microcomputer 10 pre-allocates one or more different battery SOC values to each of the loads 50, 51, and 52 for blocking the dark current in advance, (50, 51, 52) to shut off the current applied to the at least one load (50, 51, 52) when the battery SOC falls below a predetermined one or more values by receiving the SOC signal and monitoring the battery SOC , 21, 22, respectively. The battery SOC capacity is an important factor for ensuring the re-startability of the vehicle. In the dark current cutoff logic of the preferred embodiment of the present invention, the battery SOC capacity monitoring procedure is performed as described above.

The dark current shutdown logic set in the microcomputer 10 is applied to the at least one load 50, 51, 52 by the release condition received from at least one of the switch module or the can communication module 40 Logic to control said at least one latch relay (20, 21, 22)

Here, the release condition includes at least one signal selected from the group consisting of a key on signal, a door unlock signal, a door open signal, a brake switch signal, or an emergency light switch signal.

As shown in FIG. 2, three loads 50, 51 and 52 are provided for controlling the three loads 50, 51 and 52 by the microcomputer 10 It should be noted that although the invention is described, the number of loads is not limited thereto.

The closed-circuit current shut-off logic is provided to the three loads 50, 51, 52, that is, the first load 50 (50), if the specific conditions obtained through the input signals received from the switch module ), The second load 51 and the third load 52, and the application of the current is controlled in sequence according to the conditions.

In the preferred embodiment of the present invention, the dark current shutdown logic set in the microcomputer 10 is set to a normal use mode (first control mode) corresponding to the general use of the vehicle and a long-term parking mode Control mode) are respectively preset and stored, and the dark current blocking logic of the normal use mode and the long-term parking mode are set differently from each other.

Therefore, the driver of the vehicle to which the present invention is applied can differently set the configuration for blocking the dark current when the vehicle is used normally and the configuration for blocking the dark current when the vehicle is parked for a long time, thereby improving the dark current blocking efficiency do.

Preferably, the general use mode and the long-term parking mode are configured to be configurable through an input module (not shown) communicating with the can communication module 40 in can communication.

The input module is a component provided to set the ON / OFF control of the dark current shutdown system that enhances the re-startability of the vehicle of the present invention and to set the operation mode of the dark current shutdown logic to the user arbitrarily, The user controls ON / OFF of at least one of the at least one latch relays (20, 21, 22) by controlling the ON / OFF of the at least one latch relays , 22) can be set.

In a preferred embodiment of the present invention, the input module may include an input device provided in a vehicle interior. The input devices may correspond to any input devices disposed on a dashboard, cluster or steering wheel provided in known vehicles.

More preferably, the input module is connected to the cluster system of the vehicle through the can communication module 40 and the microcontroller 10 uses the input device of the cluster system, Can be configured so as to modify the setting of < RTI ID = 0.0 >

3 shows a cluster screen displayed to set the operating mode of the dark current shutdown logic using a user setup menu USM in a cluster of vehicles as an input module according to a preferred embodiment of the present invention.

As shown in the figure, the operation mode of the user selectable dark current blocking logic is displayed through the user setting menu in the cluster 60, and the user selects one of the operation modes of the displayed dark current blocking logic, The mode of the dark current blocking logic of the dark current blocking logic can be changed.

At this time, the items that can be selected by the user include, for example, a normal use mode, a long term parking mode, a mode entry period (for example, one week leave, two weeks leave, one month leave) (For example, smart keys, anti-theft devices), and any other load, entry, or release conditions that may be placed in the vehicle may be included in this item.

FIG. 4 is a table showing an embodiment of the dark current blocking logic set through the above configuration.

As shown in the figure, the dark current blocking logic set in the microcomputer 10 is set to perform different logic in the normal use mode and the long-term parking mode.

Long-term parking mode

Upon long-term parking of the vehicle, the user sets the long-term parking mode of the dark current blocking system for the user setting mode of the cluster system of the vehicle.

After setting the long-term parking mode, if the key-off occurs according to the vehicle stop,

The latch relay 20 connected to the first load 50 is turned OFF after the entry condition Key Off 5 seconds and the supply of current to the first load 50 is stopped and the door is closed 20 minutes after Key Off or all doors are closed The latch relay 21 connected to the second load 51 is turned off to stop the current supply to the second load 51. If the battery SOC value drops below 50% The latch relay 22 connected to the third load 52 is turned OFF and the supply of current to the third load 52 is stopped.

Here, the first load 50 is a convenience load using an ordinary power source such as an interior light, a radio, a cluster, etc. The second load 51 is a convenience load not related to regulation or safety, The third load (52) is a load that must always operate in connection with safety regulations or safety such as theft alarm.

The dark current shutdown logic of the dark current shutdown system under the long term parking mode operated as described above is released upon input of the release condition, and the operation of the dark current shutdown logic is released. Here, the release condition may be any one of Key On, door unlock, and door open.

Normal use mode

In normal use of the vehicle, the user sets the general use mode of the dark current blocking system for the user setting mode of the cluster system of the vehicle.

After setting the normal use mode, if the key off occurs according to the vehicle stop,

The latch relay 20 connected to the first load 50 is turned OFF after 20 minutes of key off as an entry condition or 5 seconds after closing all the doors and locking the current so that the current supply to the first load 50 is stopped , If the battery SOC value is less than 55% or the smart key cutoff setting is made after Key Off, the latch relay 21 connected to the second load 51 is turned OFF to stop the current supply to the second load 51, The latch relay 22 connected to the third load 52 is turned OFF and the third load 52 is turned OFF when the battery SOC value drops to 50% The current supply is interrupted.

Also, the first load 50 is a convenience load using an ordinary power source such as an interior light, a radio, a cluster, etc. The second load 51 is a convenience load not related to regulation or safety, The third load (52) is a load that must always operate in relation to the law or safety such as a burglar alarm.

The dark current shutdown logic of the dark current shutdown system under the above-described general usage mode is released upon input of the release condition, and the operation of the dark current shutdown logic is released. Here, the release condition may be any one of a key on, a door unlock, a door open, a brake switch, or a emergency light switch signal.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is not. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

10: Microcomputer
20, 21, 22: latch relay
30: Local switch module
40: CAN communication module
50, 51, 52: load
60: Cluster

Claims (9)

A dark current blocking system enhancing re-startability of a vehicle,
A can communication module connected to a can communication line of the vehicle and performing can communication with an in-vehicle electronic control module;
A local switch module connected to a local switch of the vehicle and receiving a switching signal of the local switch;
At least one latch relay which is turned on and off to control a current applied to at least one load of the vehicle, respectively; And
A microcomputer for performing a dark current shutdown logic according to a signal received from either the can communication module or the local switch module;
/ RTI >
Wherein the dark current blocking logic is logic that controls the at least one latch relay to shut off a current applied to the at least one load.
The method according to claim 1,
The microcomputer,
The can communication module being associated with the cluster system of the vehicle,
Wherein the setting of the dark current shutdown logic of the microcomputer is modified using an input device of the cluster system.
The method according to claim 1,
The microcomputer,
Receiving the battery SOC signal of the vehicle from the can communication module and monitoring the battery SOC,
Wherein the at least one latch relay controls the at least one latch relay to shut off the current applied to the at least one load when the battery SOC falls below a predetermined value or more.
The method according to claim 1,
A first control mode for general use and a second control mode for long-term parking are preset in the microcomputer,
The dark current blocking logic of the first control mode and the dark current blocking logic of the second control mode are set differently,
Wherein the first control mode and the second control mode can be set through a cluster system of the vehicle in cooperation with the can communication module.
The method according to claim 1,
Said at least one load,
And one latch relay is assigned to each load.
The method according to claim 1,
The dark current blocking logic set in the microcomputer includes:
By an entry condition received from at least one of the switch module or the can communication module,
Wherein the logic circuit controls the at least one latch relay to shut off the current applied to the at least one load.
The method according to claim 6,
The entry condition is,
Wherein the at least one signal comprises at least one signal selected from the group consisting of a key off signal, a door lock setting signal, a door closing signal, a battery SOC signal, an external temperature signal, Closed-circuit current blocking system.
The method according to claim 1,
The dark current blocking logic set in the microcomputer includes:
By a release condition received from at least one of said switch module or said can communication module,
And the at least one latch relay is controlled so that power is applied to the at least one load.
9. The method of claim 8,
The above-
Wherein the at least one signal includes at least one signal selected from the group consisting of a key on signal, a door unlock signal, a door open signal, a brake switch signal, or an emergency light switch signal.

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