KR20130068419A - Apparatus and method for preventing battery discharge of vehicle - Google Patents

Abstract

PURPOSE: A vehicle battery discharge preventing apparatus and a method thereof are provided to prevent a vehicle battery from being discharged, thereby preventing a starting failure situation caused by a discharged vehicle battery in advance. CONSTITUTION: A vehicle battery discharge preventing apparatus includes a voltage and current detecting unit, a control unit and a starting unit. The voltage and current detecting unit connected to a battery of a vehicle includes a sensor for detecting at least one of a voltage or a current. The control unit controls starting of the vehicle after receiving occurrence of an abnormal voltage or current of the battery from the voltage and current detecting unit. The starting unit starts or stops the vehicle according to the control unit. A vehicle battery discharge preventing method includes following steps. At least one of the voltage or the current of the battery of the vehicle is detected. If a detected voltage or current is determined to be the abnormal voltage or current, the vehicle is checked whether the starting is in an off state or not. If the starting is determined to be in the off state, the battery is charged by forcibly starting the vehicle and operating an alternator. The starting is in the off state if charging the battery is completed. [Reference numerals] (110) Battery; (120) Voltage/current detection unit; (140) Starting unit; (150) Alternator; (160) Cluster

Description

Apparatus and method for preventing battery discharge of vehicle}

The present invention relates to a battery discharge apparatus and method of a vehicle, and more particularly, to a battery discharge apparatus and method of a vehicle to detect the possibility of battery discharge and to be charged before a discharge situation occurs.

A battery is simply an electrical bank that can store electricity and pull it when needed. Recently, the requirements for car batteries are specific and constantly increasing. Also, it is no longer a luxury to decorate automobiles with various electronic devices these days, and these electronic devices all need battery power.

Normally, while driving a car, power is generated by the alternator, so there is no shortage of power required by the engine. The problem is that the starter motor is used because the engine has to be rotated from the outside to compress the mixer. The battery also stores the electricity generated by the alternator.

Temperature variations affect battery performance in many ways. When the weather is cold, the starting capacity of the battery is reduced and the viscosity of the engine oil is also increased, thereby increasing the burden on the battery to start the engine. At this time, if you try to turn the starter over and over again, the battery will naturally discharge.

Commonly referred to as an alternator, the alternator acts as a generator to make up for the lack of electricity in the battery. If a problem occurs with this generator, it will not be able to store electricity in the battery and will have to continue to use the electricity stored in the battery. This results in 'discharge of the battery'.

The battery also discharges very little by just storing it. For example, in a car that only burns about once every two weeks, the battery is very likely to cause a natural discharge, and because a small current flows due to the always-on electrical equipment such as a clock, the battery may be discharged little by little. have.

That is, the cause of the battery discharge is caused by sudden temperature drop in winter, excessive dark current of various electrical devices connected to the battery power, and the headlamp turned on for a long time with the engine off. There may be various things such as long-term use of navigation, air conditioning, and the like.

When the battery is discharged, the vehicle cannot be turned on, so it is very inconvenient to use a method such as connecting the battery of another vehicle to charge the discharged battery and turning on the vehicle.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described technical background, and an object thereof is to provide an apparatus and a method capable of monitoring a battery state of a vehicle and preventing battery discharge.

Another object of the present invention is to provide an apparatus and a method capable of improving vehicle durability by preventing battery discharge of a vehicle and providing convenience of vehicle management to a driver.

In order to solve such a problem, the present invention connects a voltage / current detector to a battery of a vehicle to detect an abnormal situation and take appropriate measures when a battery abnormal condition occurs to prevent the discharge of the vehicle battery by charging the battery or stopping using the battery. do.

That is, an apparatus for preventing battery discharge of a vehicle according to an embodiment of the present invention includes a voltage / current detector connected to a battery of the vehicle and including a sensor capable of detecting at least one of voltage or current, and from the voltage / current detector. And a control unit configured to receive the occurrence of the abnormal voltage or the abnormal current of the battery to control the starting of the vehicle, and a starter to turn on / off the starting of the vehicle under the control of the controller.

Herein, the display unit may further include an alternator operating as the start-up is turned on by the starter and connected to the battery to charge the battery. Alternatively, the display unit may be connected to the control unit to warn an abnormal state of the battery. It may also include.

The controller may control the starting unit when the voltage or current detection value transmitted from the voltage / current detection unit does not reach a minimum voltage or current value capable of operating the starter motor of the vehicle and operating the ignition system. When an abnormal voltage or an abnormal current is detected from the voltage / current detector, it is preferable to control to switch to forced start mode when the start is OFF and to turn off start by force if the ignition / ACC ON state.

According to another aspect of the present invention, a method for preventing vehicle battery discharge includes detecting at least one of a voltage or a current of a battery of a vehicle, and when the current of the detected voltage is an abnormal voltage or an abnormal current, starting is turned off. Checking whether the engine is in an off state; if it is determined that the engine is in the OFF state, forcibly turning on the engine to drive the alternator to charge the battery; and turning off the engine when the battery is fully charged. Steps.

According to still another aspect of the present invention, there is provided a method of preventing vehicle discharge of a vehicle, the method including detecting at least one of a voltage or a current of a battery of a vehicle, and when it is determined that the current of the detected voltage is an abnormal voltage or an abnormal current, Checking whether the ACC ON state, and if it is determined that the ignition / ACC ON state in the checking step, including forcibly starting to turn off, after the step of turning off the forcibly, the driver has a battery fault It may further comprise the step of warning.

According to the present invention, it is possible to prevent the discharge of the vehicle battery, it is possible to prevent the start-up situation due to the discharge of the battery in advance.

In addition, it is possible to prevent the battery failure or life degradation due to frequent discharge of the battery has the effect of improving the durability of the vehicle and reduce the vehicle management cost.

In addition, the battery is protected from being discharged to provide the driver with convenience of vehicle management.

1 is a block diagram showing the configuration of a vehicle battery discharge preventing apparatus according to an embodiment of the present invention.
2 is a flowchart illustrating a vehicle battery discharge preventing method according to an exemplary embodiment of the present invention.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It is noted that the terms "comprises" and / or "comprising" used in the specification are intended to be inclusive in a manner similar to the components, steps, operations, and / Or additions.

Hereinafter, with reference to the accompanying drawings will be described in detail a vehicle battery discharge preventing apparatus and method according to an embodiment of the present invention.

1 is a block diagram showing the configuration of a vehicle battery discharge preventing apparatus according to an embodiment of the present invention.

As shown in FIG. 1, an apparatus for preventing battery discharge of a vehicle according to an exemplary embodiment of the present invention includes a battery 110 and a voltage / current detector 120 connected to the battery 110.

The voltage / current detection unit 120 is left in a parked state for a long time, the battery discharge due to the dark current of the vehicle, or when the engine is left with the headlamp turned on for a long time (ignition situation 1) or ignition Detects abnormal voltages / currents that can occur when battery discharge occurs due to multiple uses such as audio / navigation / electronics for a long time in the ACC ON state (discharge situation 2). That is, the voltage / current detector 120 detects the abnormal voltage and current, including a sensor capable of detecting the voltage level and the output current amount of the battery 110.

In addition, the voltage / current detector 120 is connected to the ECU 130 of the vehicle to continuously consume current of the battery 110 due to a sudden decrease in an abnormal voltage / current, that is, an output voltage / current of the battery 110 or a dark current. When it detects the occurrence it is transmitted to the ECU (130).

At this time, the reference value of the abnormal voltage / current determination may be set to a minimum voltage / current value that the battery 110 can operate the starter motor and the ignition system.

The ECU 130 may be connected to the starter 140 to enter a forced start mode according to the type of discharge situation (discharge situation 1), or may turn off the start (discharge situation 2).

That is, when the battery is discharged by the dark current of the vehicle by leaving the vehicle parked for a long time, or when the vehicle is left with the head lamp turned on for a long time while the ignition is turned off, in the "discharge situation 1" through the starter 140 Enter the forced start mode, whereby battery 110 drives a starter motor (not shown) and supplies current to the ignition system to turn on the start. When the start-up is turned on, the battery 110 is charged by the operation of the alternator 150, and the start-up state is maintained until the voltage / current of the battery 110 returns to a normal value as a result of the monitoring of the voltage / current detector 120. To charge the battery 110.

When charging is completed, the voltage / current detection unit 120 sends a signal to the ECU 130. Accordingly, the ECU 130 controls to terminate the forced start mode and turn off the start.

On the other hand, in the "discharge situation 2" in which the discharge of the battery due to various uses of audio, navigation, electronics, etc. for a long time in the ignition / ACC ON state, when the voltage / current detection unit 120 detects an abnormal voltage / current By sending a signal to the ECU 130, the control is forcibly turned off.

Next, the driver is notified of the state of the vehicle by lighting the battery warning light and generating a warning sound through the cluster 160 of the vehicle.

Now, the vehicle battery discharge prevention method according to an embodiment of the present invention will be described in detail. 2 is a flowchart illustrating a vehicle battery discharge preventing method according to an exemplary embodiment of the present invention.

As shown in FIG. 2, the voltage / current detector (FIG. 1: 120) measures voltage and current (S210) to determine whether an abnormal voltage or an abnormal current occurs (S212). If an abnormal voltage or abnormal current is detected as a result of the determination (YES in S212), it is checked whether the starting is turned off (S214).

If the starting state is OFF, the discharge situation 1 corresponds to the case of the forced start mode and starts the start (S216). Accordingly, the alternator is driven (S218), and charging of the battery is started (S220). When charging is completed as a result of the measurement of the voltage / current detection unit (S222), the start-up is again turned off (S224) and ends.

If an abnormal voltage or an abnormal current is detected (YES in S212), but the start-up is not OFF (NO in S214), it is determined whether the ignition / ACC ON state is in S226. If the determination result of step S226 is the ignition / ACC ON state (YES in step S226), since the discharge situation 2, the start is turned off to prevent further discharge (S228), and a warning is output to the driver (S230). As described above, the warning output method can be such that the battery warning light is turned on and a warning sound is generated.

As described above, the discharge of the battery may be prevented by detecting the discharge state of the battery in advance by using a voltage / current sensor connected to the battery and taking a corresponding action. When the battery is prevented from being discharged, the possibility of battery failure may be reduced, thereby improving durability of the vehicle, reducing vehicle management costs, and providing a driver with convenience of vehicle management.

While the invention has been described in terms of the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Accordingly, the appended claims are intended to embrace all such modifications and variations as fall within the true spirit of the invention.

Claims (9)

A voltage / current detector connected to a battery of the vehicle and including a sensor capable of detecting at least one of voltage and current;
A control unit which receives the abnormal voltage or abnormal current generation of the battery from the voltage / current detection unit and controls the starting of the vehicle;
And a starter configured to turn on / off the starting of the vehicle under the control of the controller. The method of claim 1,
And an alternator which is operated when the starting is turned on by the starting unit and is connected to the battery to charge the battery. The method of claim 1,
And a display unit connected to the control unit and configured to warn an abnormal state of the battery. The method of claim 1,
The control unit discharges the vehicle battery for controlling the starting unit when the voltage or current detection value transmitted from the voltage / current detection unit does not reach the minimum voltage or current value capable of operating the starter motor and the ignition system of the vehicle. Prevention device. The method of claim 1,
And the control unit controls to switch to a forced start mode when an abnormal voltage or an abnormal current is detected from the voltage / current detector, when the starting is OFF. The method of claim 1,
And the controller is configured to forcibly turn off starting when an ignition / ACC ON state is detected when an abnormal voltage or an abnormal current is detected from the voltage / current detector. Detecting at least one of voltage or current of the battery of the vehicle;
If it is determined that the current of the detected voltage is an abnormal voltage or an abnormal current, checking whether the starting is OFF;
Charging the battery by driving the alternator by forcibly turning on the startup when it is determined that the startup is in the OFF state in the checking step;
The vehicle battery discharge prevention method comprising the step of turning off the start when the charging of the battery is completed. Detecting at least one of voltage or current of the battery of the vehicle;
If it is determined that the current of the detected voltage is an abnormal voltage or abnormal current, checking whether the ignition / ACC ON state;
If it is determined that the ignition / ACC ON state in the confirming step, the vehicle battery discharge prevention method comprising the step of forcibly turning off the start. 9. The method of claim 8,
And after the step of forcibly turning off the vehicle, warning the driver of a battery failure.

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