KR101734664B1 - Method for controlling Idle Stop and Go - Google Patents

Method for controlling Idle Stop and Go Download PDF

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Publication number
KR101734664B1
KR101734664B1 KR1020150107225A KR20150107225A KR101734664B1 KR 101734664 B1 KR101734664 B1 KR 101734664B1 KR 1020150107225 A KR1020150107225 A KR 1020150107225A KR 20150107225 A KR20150107225 A KR 20150107225A KR 101734664 B1 KR101734664 B1 KR 101734664B1
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South Korea
Prior art keywords
battery
isg
state
entry
monitoring
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KR1020150107225A
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Korean (ko)
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KR20170014232A (en
Inventor
임영철
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현대자동차주식회사
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Priority to KR1020150107225A priority Critical patent/KR101734664B1/en
Publication of KR20170014232A publication Critical patent/KR20170014232A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
    • F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/042—Introducing corrections for particular operating conditions for stopping the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2403—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially up/down counters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
    • F02D2200/503—Battery correction, i.e. corrections as a function of the state of the battery, its output or its type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems
    • Y02T10/48—

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Secondary Cells (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The present invention relates to an ISG (Idle Stop and Go) control technique, and more particularly, to an ISG control method for improving fuel economy by improving ISG non-operation due to battery sensor error during long-term storage of a vehicle equipped with a black box .

Description

[0001] ISG CONTROL METHOD [0002]

The present invention relates to an ISG (Idle Stop and Go) control technique, and more particularly, to an ISG control method for improving fuel economy by improving ISG non-operation due to battery sensor error during long-term storage of a vehicle equipped with a black box .

In a typical Idle Stop and Go (ISG) system, when a constant current (for example, 100 mA) or more (for example, 168 hours) elapses in a vehicle equipped with a constant power black box, Send an error message. In this case, the ECU always enters the non-ISG state.

Battery voltage can not be stabilized due to excessive dark current (120 ~ 500mA) caused by black box during long time key off (KEY OFF). At this time, the battery sensor determines that the battery state of charge (SOC) calculated based on the battery stabilization voltage is unreliable, and sends an error message to the ECU.

If the ISG is not entered once, the battery will be overcharged due to the overcurrent caused by the black box at all times. Accordingly, there is a problem that the ISG is prohibited from entering at all times regardless of the state of charge of the battery during driving.

① Start OFF state Black box consumption current: 120 ~ 500mA

② Reactivation criterion of battery sensor: Vehicle current less than 100mA, 3 hours

③ Failure diagnosis related to reactivation: Judgment of failure in case of no reactivation for 168 hours (SOC reliability deterioration judgment)

1. Korean Patent Publication No. 10-2014-0045208 2. Korean Patent Publication No. 10-2012-0059202

The present invention has been proposed in order to solve the problem of the above-mentioned background art, and it is an object of the present invention to provide a vehicle control system capable of improving idle stop and go (ISG) And an object of the present invention is to provide an ISG control method for a box-equipped vehicle.

The present invention provides an ISG control method of a vehicle equipped with a black box in which a battery state is monitored such as a battery voltage of a vehicle for a predetermined period of time, an initial cranking current and a battery liquid temperature, and the ISG is re-entered when the battery is charged .

The ISG control method includes:

A method of controlling an ISG of a vehicle equipped with an ISG (Idle Stop and Go)

An error message generation step of sensing the battery using the battery sensor and generating an error message based on the sensing information;

A monitoring step of monitoring the battery as the error message is generated to generate monitoring information;

Determining whether the battery charging status information according to the monitoring information satisfies a predetermined ISG reentry condition; And

And an ISG mode re-entry step of re-entering an ISG mode or maintaining an uninitialized state of the ISG mode according to the determination result of the satisfaction of the ISG re-entry condition.

In addition, the ISG control method may include counting the number of ISG mode entry after the ISG mode re-entry step; And fully charging the battery for a predetermined period of time when the counted number is equal to or greater than a preset reference value.

Here, the sensing information may include a charging current of the battery and a duration of the charging current that is greater than or equal to a preset specific value.

The monitoring information may include a first battery voltage, a battery current, and a first battery liquid temperature of the battery.

The battery charge state information may include a battery charge accumulation value calculated using the monitoring information, a second battery voltage, and a second battery liquid temperature.

Also, the ISG re-entry condition may be such that the battery charge integration value is 10AH or more, the second battery liquid temperature is in the range of 0 to 60 ° C, and the second battery charge temperature is in the range of 0 to 60 ° C, And the battery voltage is 13.5 V or more.

At this time, the battery charge accumulation value, the second battery liquid temperature, and the second battery voltage may be maintained for more than a predetermined delay time in a state satisfying the re-entry condition.

Further, the vehicle may be characterized in that the vehicle is a vehicle in which a power-driven electrical component at all times is mounted.

In addition, the electrical power-using part may be a black box.

The battery charge integration value may be calculated using a combination of SOC (State Of Charge), SOH (State Of Health), and SOF (State Of Function).

The battery sensor may be an IBS (Intelligent Battery Sensor).

On the other hand, another embodiment of the present invention can provide an ISG (Idle Stop and Go) system and a method of controlling an ISG of a vehicle equipped with a constant power source electric component. According to another aspect of the present invention, there is provided an ISG control method including: generating an error message for sensing a battery using a battery sensor and generating an error message based on sensing information; A monitoring step of monitoring the battery as the error message is generated to generate monitoring information; Determining whether the battery charging status information according to the monitoring information satisfies a predetermined ISG reentry condition; An ISG mode re-entry step of re-entering an ISG mode or maintaining an uninitiated state of the ISG mode according to the determination result of the satisfaction of the ISG re-entry condition; And displaying the reentrant or non-reentrant state of the ISG mode on a display unit.

Here, the display may be a combination of a character, a graphic, and a voice.

According to the present invention, the ISG (Idle Stop and Go) does not normally enter when a battery sensor error due to an excessive vehicle dark current occurs. In this case, the battery condition such as a battery voltage, initial cranking current, Once recharged, re-entry of the ISG will improve fuel economy by improving the ISG system entry logic.

Another advantage of the present invention is that performance of NVH (Noise, Vibration, Harshness) can be improved.

1 is a block diagram of an idle stop and go (ISG) control system 100 according to an embodiment of the present invention.
2 is a conceptual diagram illustrating an ISG control logic according to an embodiment of the present invention.
3 is a flowchart illustrating an ISG control process according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Like reference numerals are used for similar elements in describing each drawing.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. The term "and / or" includes any combination of a plurality of related listed items or any of a plurality of related listed items.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be construed as ideal or overly formal in meaning unless explicitly defined in the present application Should not.

Hereinafter, a method of controlling an ISG of a vehicle equipped with a black box according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an idle stop and go (ISG) control system 100 according to an embodiment of the present invention. 1, the ISG control system 100 includes a battery 110, a battery sensor 120 for sensing the battery 110 to generate sensing information, a battery management system (BMS) for managing the battery 110, A controller 140 for acquiring vehicle information and / or battery information to determine an ISG mode re-entry, a display unit 150 for displaying vehicle information and / or battery information, and displaying an ISG mode re-entry and / A charger 160 for charging the battery 110, and the like.

The battery 110 may be a series and / or parallel battery cell (not shown), which may be a high voltage battery for an electric vehicle, such as a nickel metal battery, a lithium ion battery, a lithium polymer battery, . Generally, a high-voltage battery is a battery used as a power source for moving an electric vehicle and refers to a high voltage of 100 V or more.

However, the present invention is not limited to this, and a low voltage battery of 100 V or less is also possible. Examples of the vehicle include EV (Electric Vehicle), HEV (Hybrid Electric Vehicle), PHEV (Plug-in Hybrid Electric Vehicle), and fuel cell vehicle.

The battery sensor 120 senses input power and / or output power generated from the battery 110. Therefore, it consists of current, voltage sensor and so on. Although the battery sensor 120 is separately shown in FIG. 1 for the sake of understanding, the battery sensor 120 may be configured in the BMS 130.

In particular, the battery sensor 120 may be an IBS (Intelligent Battery Sensor). The IBS is mounted on the minus (-) terminal of the battery 110. The battery status is checked, but the IBS is also powered from the battery. Current, voltage and / or temperature in real time. Based on this measurement data, it is possible not only to determine the battery state but also to predict the subsequent state.

A BMS (Battery Management System) 130 manages charge and / or discharge states of the battery. In particular, the BMS 130 may be configured separately from the controller 140, or may be integrally configured.

The charger 160 can be classified into on-board type OBC (On Board Charger) and stationary type depending on whether the vehicle is mounted or not.

The display unit 150 may include audio, light emitting diodes (OLED), organic light emitting diode (OLED), liquid crystal display (LCD), and the like. Accordingly, the display unit 150 can output the information generated by the controller 140 in a combination of characters, graphics, and / or audio.

2 is a conceptual diagram illustrating an ISG control logic according to an embodiment of the present invention. Referring to FIG. 2, when the battery sensor 120 detects a battery voltage drop due to a battery voltage drop due to a vehicle dark current due to a constant power source electric component (for example, a black box, Can be an overcurrent.

Accordingly, when the battery current 202 satisfies the condition 220 requiring more than the predetermined set value 211 and the duration 201 is satisfied with the classic requiring more than a predetermined set value, When the product 230 is reached, an error message is sent to the controller 140. Of course, the controller 140 may maintain the non-entry state 251 of the ISG mode and display it on the display unit 150 in this state.

Instead of determining whether to enter the ISG according to the existing charging state and / or the battery liquid temperature, the controller 140 may determine that the battery current 202, battery voltage 204, battery charge integration value The battery temperature 205, the battery liquid temperature 207, and the duration 203 thereof.

If it is determined that the battery charging state is good as a result of the monitoring, the controller 1410 can re-enter the ISG mode with the battery charge accumulated value and display the re-entry state 252 on the display unit 150. [

On the other hand, if the ISG mode entry exceeds a predetermined number of times, the controller 140 activates the refresh logic for forcibly charging the battery 110 for a certain time.

3 is a flowchart illustrating an ISG control process according to an embodiment of the present invention. Referring to FIG. 3, the battery current is sensed using the battery sensor 120 and the delay time is measured (step S310).

It is determined whether or not the sensed battery current is equal to or greater than a predetermined reference value (for example, about 100 mA) and the duration of maintaining the state is equal to or greater than a preset reference value (for example, about 168 hr) (step S320).

If the two conditions are not satisfied, the process proceeds to step S310. If the two conditions are satisfied, the battery sensor 120 generates an error message (step S330).

Thereafter, as the error message is generated, the battery is monitored to generate monitoring information, and it is determined whether the battery charging status information according to the monitoring information satisfies a preset ISG re-entry condition (step S340).

Here, the monitoring information may include a first battery voltage, a battery current, and a first battery liquid temperature of the battery (110 in FIG. 1). The battery charge state information may include a battery charge accumulation value calculated using the monitoring information, a second battery voltage, and a second battery liquid temperature. Of course, the first battery voltage and the second battery voltage, the first battery liquid temperature, and the second battery liquid temperature may be the same value or different values.

Here, the ISG re-entry condition may be such that the battery charge accumulation value is 10AH or more, the second battery liquid temperature is in the range of 0 to 60 ° C under the condition that the vehicle reenters the ISG mode from the ISG underegulated state, The voltage may be 13.5 V or more. The battery charge accumulation value can be calculated using a combination of SOC (State Of Charge), SOH (State Of Health), and SOF (State Of Function).

3, if it is determined in step S340 that the ISG re-entry condition is not satisfied, the non-entry state of the ISG mode is maintained (step S360), and steps S310 to S340 are repeatedly performed.

Alternatively, if the ISG re-entry condition is satisfied in step S340, the system re-enters the ISG mode (step S350), counts the number of times of re-entry, and if it is equal to or greater than a predetermined value (for example, about 100 times) The battery 110 is fully charged (step S380).

Otherwise, if it is not greater than the specific value in step S370, the flow advances to step S350.

In general, initially, the ISG entry condition consists of the battery satisfying condition and the vehicle satisfying condition, and when both conditions are satisfied, the ISG entering mode is entered.

Such a battery satisfying condition is that there is no error message from the battery sensor, the battery voltage is 12.5 V or more, the battery liquid temperature is 60 ° C or less, and the battery SOC is 75% or more.

In addition, the vehicle satisfying conditions include vehicle speed condition (stopping after running at 10 kph or more), outside temperature (-2 to 35 ° C), coolant temperature (75 ° C or more), satisfaction of brake pressure condition, have.

100: Idle Stop and Go (ISG) control system
110: Battery
120: Battery sensor
130: Battery Management System (BMS)
140:
150:
160: Charger

Claims (12)

1. An ISG control method for a vehicle equipped with an idle stop and go (ISG) system and a constant power source electric component,
An error message generating step of generating an error message based on the sensing information by sensing the battery using the battery sensor after the ISG mode is not entered by the constant power source electric component;
A monitoring step of monitoring the battery by the battery sensor to generate monitoring information as the error message is generated;
Determining whether the battery charging status information according to the monitoring information satisfies a predetermined ISG reentry condition; And
And an ISG mode re-entry step of re-entering an ISG mode or maintaining an uninitiated state of the ISG mode according to the determination result of the satisfaction of the ISG re-entry condition,
Wherein the monitoring information includes a first battery voltage of the battery, a battery current, and a first battery liquid temperature,
Wherein the sensing information includes a charging current of the battery and a duration of the charging current that is maintained at a predetermined value or more,
Wherein the battery charge status information includes a battery charge accumulation value, a second battery voltage, and a second battery liquid temperature calculated using the monitoring information.
The method according to claim 1,
Counting the number of ISG mode entry after the ISG mode re-entry step; And
Further comprising: if the counted number is greater than or equal to a predetermined reference value, fully charging the battery for a predetermined period of time.
delete delete delete The method according to claim 1,
The ISG re-entry condition is such that the battery charging integrated value is 10AH or more, the second battery liquid temperature is in the range of 0 to 60 ° C, and the second battery voltage Is 13.5 V or more and is maintained for a predetermined delay time or longer in a state in which the battery charge integration value, the second battery liquid temperature, and the second battery voltage satisfy the re-entry condition.
delete The method according to claim 1,
Wherein the constant power source electric component is a black box.
The method according to claim 1,
Wherein the battery charge accumulation value is calculated using a combination of SOC (State Of Charge), SOH (State Of Health), and SOF (State Of Function).
The method according to claim 1,
Wherein the battery sensor is an IBS (Intelligent Battery Sensor).
1. An ISG control method for a vehicle equipped with an idle stop and go (ISG) system and a constant power source electric component,
An error message generating step of generating an error message based on the sensing information by sensing the battery using the battery sensor after the ISG mode is not entered by the constant power source electric component;
A monitoring step of monitoring the battery by the battery sensor to generate monitoring information as the error message is generated;
Determining whether the battery charging status information according to the monitoring information satisfies a predetermined ISG reentry condition;
An ISG mode re-entry step of re-entering an ISG mode or maintaining an uninitiated state of the ISG mode according to the determination result of the satisfaction of the ISG re-entry condition; And
And displaying a reentry state or an unentered state of the ISG mode on a display unit,
Wherein the monitoring information includes a first battery voltage of the battery, a battery current, and a first battery liquid temperature,
Wherein the sensing information includes a charging current of the battery and a duration of the charging current that is maintained at a predetermined value or more,
Wherein the battery charge status information includes a battery charge accumulation value, a second battery voltage, and a second battery liquid temperature calculated using the monitoring information.
12. The method of claim 11,
Wherein the display is a combination of a character, a graphic, and a voice.
KR1020150107225A 2015-07-29 2015-07-29 Method for controlling Idle Stop and Go KR101734664B1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010174827A (en) * 2009-01-30 2010-08-12 Daihatsu Motor Co Ltd Idling stop control device
JP2012112286A (en) * 2010-11-24 2012-06-14 Daihatsu Motor Co Ltd Control device of idle stop vehicle

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101189292B1 (en) 2010-11-30 2012-10-09 현대자동차주식회사 Apparatus and method for guiding deactivation of battery sensor of ISG vehicles
KR20140045208A (en) 2012-10-08 2014-04-16 현대모비스 주식회사 Apparatus and method activating battery sensor of isg vehicle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010174827A (en) * 2009-01-30 2010-08-12 Daihatsu Motor Co Ltd Idling stop control device
JP2012112286A (en) * 2010-11-24 2012-06-14 Daihatsu Motor Co Ltd Control device of idle stop vehicle

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