KR20160150516A - Apparatus and method for idle charge of hybrid vehicle - Google Patents

Abstract

The present invention relates to a device and a method for idle charging for a hybrid vehicle. The present invention comprises: a hybrid starter and generator (HSG) which operates as a start motor connected to an engine to turn on the engine and operates as a generator to perform an idle charge when the engine is turned on; a battery electrically connected to a drive motor and the HSG; a deceleration pedal detection unit for detecting a displacement amount of a deceleration pedal; an accelerator pedal detector for detecting a displacement amount of an accelerator pedal; a gear shift level detecting unit for detecting a position of a gear shift level; and a hybrid controller which turns on the engine according to a state of charge (SOC) of the battery, when a vehicle is detected as a stop state while driving by detecting the displacement amount of the decelerating pedal, the position of the gear shift level, and a vehicle speed, and turns off the engine according to the displacement amount of the deceleration pedal to stop an idle charge.

Description

[0001] APPARATUS AND METHOD FOR IDLE CHARGE OF HYBRID VEHICLE [0002]

The present invention relates to an idle charging apparatus and method for a hybrid vehicle.

Recently, an electric vehicle or a hybrid vehicle has been developed and attracts attention for improving the fuel efficiency of the vehicle. The electric vehicle refers to a vehicle that generates driving torque of the vehicle by only a motor, and the hybrid vehicle refers to a vehicle that generates driving torque of the vehicle by an engine and a motor.

The hybrid vehicle is operated in various modes (for example, an electric vehicle mode, a hybrid mode, an engine mode, and the like) according to driving conditions. The hybrid mode is a mode in which drive torque is generated by a motor and an engine, and an engine mode is a mode in which a drive torque is generated only by an engine.

The TMED HEV (Transmission Mounted Electric Device Hybrid Electric Vehicle), which has a motor attached to the transmission and a wet clutch (engine clutch) inserted between the transmission and the engine, can be used to implement the EV mode and the HEV mode have.

In this TMED system, when the driver's requested torque is high, EV-to-HEV mode conversion occurs, and at this time, the HEV mode drives the vehicle using the power of the engine and the motor. Conversely, when the driver's requested torque is low, the HEV to EV mode conversion occurs, and at this time, the vehicle is driven only by the power of the motor in the EV mode.

On the other hand, in the TMED system, idle charging is performed during traveling or stopping. The idle charging is a method of charging the battery using the engine to maintain the SOC balance when the state of charge (hereinafter referred to as SOC) falls below a certain level during traveling or stopping.

That is, when the SOC becomes lower than a predetermined standard, the hybrid starter and generator (HSG) starts the engine and starts charging the battery using the engine torque. When the SOC becomes equal to or higher than a predetermined reference value, the engine is turned off to terminate the idle charging.

However, there may occur a situation in which idle charging is not required depending on the traveling road conditions. For example, as shown in FIG. 1, when the road is a road that changes from an uphill (a) to a downhill (b) road with a steep slope, the vehicle enters the HEV mode at an uphill road (a) and rapidly accelerates. At this time, when the vehicle is stopped by a signal waiting or the like and the SOC of the battery is lowered to a level lower than the reference, the charging condition of the idle is satisfied.

However, charging by regenerative braking of the motor is higher than charging by idling by HSG. Therefore, charging efficiency can be improved by charging the battery with the regenerative braking of the motor on the downward path (b) without idle charging in the stationary state of the vehicle. Therefore, there is a need for a scheme that can artificially release the vehicle even when the idling condition of the vehicle is met while the vehicle is in a stopped state.

An embodiment of the present invention is an apparatus and method for charging an idle vehicle of a hybrid vehicle capable of stopping idle charging by manually turning off the engine by only the operation of a deceleration pedal of the driver when the idle charging is performed in a stationary state while the vehicle is running to provide.

The idle charging device of the hybrid vehicle using the engine and the driving motor according to the present invention operates as a starting motor connected to the engine to turn on the engine, and operates as a generator for charging the idle when the engine is turned on HSG; A battery electrically connected to the driving motor and the HSG; A deceleration pedal detection unit for detecting a displacement amount of the deceleration pedal; An accelerator pedal detector for detecting a displacement amount of the accelerator pedal; A speed change stage detecting unit for detecting the position of the speed change stage; A vehicle speed detector for detecting a vehicle speed; And a control unit for performing the idle charging through the HSG by turning on the engine in accordance with the SOC of the battery when the shift amount of the deceleration pedal, the position of the speed change stage, and the vehicle speed are detected as a stop state during running, And a hybrid controller for turning off the engine to stop the idle charging.

Here, the hybrid controller detects the vehicle as a stop state during the running when the amount of displacement of the deceleration pedal is greater than zero, the vehicle speed is zero, and the speed change stage is located in either the traveling stage or the rearward diagnosis.

The hybrid controller performs the idle charging when the SOC of the battery satisfies the normal charging condition that is less than the first target charging amount. The hybrid controller satisfies the normal charging condition and inhibits the idle charging if the displacement amount of the deceleration pedal is larger than a preset reference displacement amount.

The hybrid controller may further include: a first forced charging condition in which the SOC of the battery is less than a second target amount after the engine is turned off, a number of times the engine is turned off once, At least one of a second forced charging condition exceeding a set first reference time and a third forced charging condition wherein the number of times the engine is turned off is twice and the time when the engine is turned off exceeds a preset second reference time The idle charging is performed.

If the SOC of the battery charged according to any one of the first to third forced charging conditions exceeds the third target charging amount and the displacement amount of the deceleration pedal is larger than a preset reference displacement amount, Lt; / RTI >

The hybrid controller may reset the idle charging if the amount of displacement of the deceleration pedal is zero, the vehicle speed is greater than a preset reference speed, or the amount of displacement of the accelerator pedal is greater than a preset reference acceleration displacement amount.

Also, the HSG and the driving motor, which are connected to the engine according to the embodiment of the present invention and operate as a start motor for performing start-up of the engine and operate as a generator for performing idle charging when the engine is turned on, An idle charging method for a hybrid vehicle including an electrically connected battery includes the steps of: detecting a stopping state of the vehicle from a shift amount of a speed reducing pedal, a vehicle speed and a gear position; Determining whether an idle state is being charged from the SOC of the battery and the ON state of the engine; And stopping the idle charging according to a displacement amount of the deceleration pedal when the idle charging is being performed.

The step of determining the stop state during traveling may include detecting whether the amount of displacement of the deceleration pedal is greater than zero, the vehicle speed is zero, and whether the speed change stage is located in a traveling stage or a backward diagnosis do. The step of stopping the idle charging switches the engine to the off state when the amount of displacement of the deceleration pedal is larger than a preset reference displacement amount.

The first forced charging condition in which the SOC of the battery is less than the first target charging amount after the idle charging is stopped, the number of times the engine is turned off once, the time when the engine is turned off is set to a first reference time And a third forced charging condition in which the number of times the engine is turned off twice and the time when the engine is turned off exceeds a second preset reference time, On state.

And stopping the idle charging according to the amount of displacement of the deceleration pedal when the SOC of the battery charged according to any one of the first to third forced charging conditions exceeds a third target charging amount.

And resetting the idle charging if the amount of displacement of the deceleration pedal is zero, the vehicle speed is greater than a preset reference speed, or the amount of displacement of the accelerator pedal is greater than a preset reference acceleration amount of displacement.

In the present invention, when the idle charging is performed while the vehicle is in the stop state while the vehicle is running, the engine is manually turned off by only the operation of the deceleration pedal of the driver to stop the idle charging so that the regenerative braking of the motor So that the charging efficiency can be improved.

Further, the vehicle can shut off exhaust gas emission by idle charging in a closed space such as a parking lot.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a diagram for explaining a conventional idle charging. Fig.
2 is a view showing a hybrid vehicle according to an embodiment of the present invention.
3 is a flowchart showing an idle charging method of a hybrid vehicle according to an embodiment of the present invention;
4 is a graph showing an idle charging method of a hybrid vehicle according to an embodiment of the present invention as SOC of time and battery.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention in the drawings, parts not related to the description are omitted. Like numbers refer to like parts throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "electrically connected" with another part in between. Also, when a part is referred to as "including " an element, it does not exclude other elements unless specifically stated otherwise.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a view showing a hybrid vehicle according to an embodiment of the present invention.

2, the hybrid vehicle 1 according to the embodiment of the present invention includes a deceleration abdomen detecting unit 10, an accelerator pedal detecting unit 12, a vehicle speed detecting unit 20, a speed change detecting unit 30, a battery manager 40 The battery 50, the hybrid controller 60, the inverter 70, the HSG 80, the engine 90, the engine controller 100, the engine clutch 110, the motor 120 and the automatic transmission 130, .

The deceleration pedal detection unit 10 detects the amount of displacement of the deceleration pedal and transmits it to the hybrid controller 60 via the network. The accelerator pedal detector 12 detects the amount of displacement of the accelerator pedal and transmits it to the hybrid controller 60 via the network. The vehicle speed detector 20 detects the vehicle speed and transmits it to the hybrid controller 60 via the network.

The speed change stage detecting unit 30 detects the position of the current speed change stage of the automatic transmission 130 and transmits it to the hybrid controller 60 via the network.

The battery manager 40 manages the SOC by detecting the information on the voltage, the current, and the temperature of the battery 50, and transmits the SOC of the battery 50 to the hybrid controller 60 through the network.

Also, the battery manager 40 controls the charge / discharge voltage of the battery 50 to prevent the battery 50 from being short-circuited because the battery 50 is overcharged below the limit voltage or overcharged beyond the limit voltage. The battery 50 is composed of a plurality of unit cells, and a high voltage for providing driving power to the motor 120 is stored.

The hybrid controller 60 is an uppermost controller, which integrally controls lower-level controllers connected to the network to control the output torque, and engages or disengages the engine clutch 110 to provide operation of the HEV mode and the EV mode.

The hybrid controller 60 according to the embodiment of the present invention controls on / off of the engine 90 according to the amount of displacement of the deceleration pedal, the traveling speed, the position of the speed change stage, and the SOC of the battery 50 . The hybrid controller 60 detects whether or not the vehicle is in a stop state while the vehicle is running in accordance with the amount of displacement of the deceleration pedal, the vehicle speed, and the position of the speed change stage, ), And stops charging the children according to the displacement amount of the deceleration pedal.

Specifically, the hybrid controller 60 turns on the engine 90 in accordance with the normal charging condition and the first to third forced charging conditions when the vehicle is in a stop state while the vehicle is running, ). Here, the normal charging condition is that the SOC of the battery 50 is less than the second target charging amount SOC_S. The first forced charging condition is a state in which the SOC of the battery 50 is less than the fourth target charging amount SOC_B after the engine 90 is turned off.

The second forced charging condition is a state in which the number of times that the engine 90 is turned off by the first charging prohibition condition is one time and the engine off time exceeds the preset first reference time T1. Here, the first reference time T1 may be set to about 90 seconds.

The third forced charging condition is a state in which the number of times that the engine 90 is turned off by the first and second charging prohibition conditions is twice and the engine off time exceeds the preset second reference time T2 . Here, the second reference time T2 may be set to about 60 seconds.

Then, the hybrid controller 60 turns off the engine 90 in accordance with the first and second charging prohibition conditions when the vehicle is in a stop state while the vehicle is running. Here, the first charge inhibiting condition satisfies the normal charging condition, and the amount of displacement of the deceleration pedal is larger than a preset reference displacement amount (A%).

The second charge prohibition condition is a condition in which the SOC of the battery 50 charged according to one of the first to third forced charging conditions exceeds the third target amount of charge SOC_C and the amount of displacement of the deceleration pedal exceeds a preset reference displacement amount A %).

Further, the hybrid controller 60 resets the idle charge according to the reset condition. Here, the reset condition is a condition where the amount of displacement of the deceleration pedal is zero or the vehicle speed is larger than a preset reference speed (for example, 5 km / h), or the amount of displacement of the accelerator pedal 12 is larger than a preset reference acceleration displacement amount to be.

The inverter 70 converts the DC voltage of the battery 50 into a three-phase AC voltage in accordance with a control signal provided to the network from the hybrid controller 60 and outputs the output torque and speed of the motor 120 in accordance with the required output of the driver . The inverter 70 is constituted by a plurality of power switching elements, and the power switching element may be composed of any one of IGBT (Insulated Gate Bipolar Transistor), MOSFET, transistor, and relay.

The inverter 70 boosts the power generation voltage output from the HSG 80 through the DC / DC conversion when the HSG 80 connected to the engine 90 is driven to output the generated voltage to charge the battery 50 Voltage. The inverter 70 boosts the power generation voltage generated by the regenerative torque of the motor 120 under the brake or regeneration condition through DC / DC conversion and supplies the boosted voltage to the battery 50.

The HSG 80 operates as a start motor and a generator and executes start-on of the engine 90 in accordance with a control signal applied through the network from the hybrid controller 60, on is maintained and supplies the generated voltage to the battery 50 through the inverter 70. [

The engine 90 is controlled by the engine controller 100 to control start-on / off and output. The engine controller 100 controls all operations of the engine 90 in accordance with a control signal applied through the network from the hybrid controller 60. [

The engine clutch 110 is disposed between the engine 90 and the motor 120 and interrupts the power connection between the engine 90 and the motor 120 according to the operation mode. The motor 120 is operated by the three-phase alternating voltage applied from the inverter 104 to generate torque, and the regenerative torque is controlled during braking to supply the charging voltage to the battery 50. The automatic transmission 130 combines a target speed change stage connected to the hybrid controller 60 via a network.

3 is a flowchart showing an idle charging method of a hybrid vehicle according to an embodiment of the present invention.

Referring to FIG. 3, the hybrid controller 60 detects the amount of displacement of the deceleration pedal through the deceleration pedal detector 10, and detects the vehicle speed through the speed detector 20. The hybrid controller (60) detects the position of the gear position via the speed change end detecting portion (30).

Then, the hybrid controller 60 detects the vehicle stopping state from the amount of displacement of the deceleration pedal, the vehicle speed, and the position of the shift position (step S1). That is, when the amount of displacement of the deceleration pedal is greater than 0, the vehicle speed is 0 km / h, and the speed change stage is located in at least one of the traveling stage (D stage) and the rear stage (R stage) It is detected that the vehicle is stationary.

Then, the hybrid controller 60 detects the SOC of the battery 50 through the battery manager 40. [ Then, the hybrid controller 60 detects the ON / OFF state of the engine 90 via the engine controller 100.

The hybrid controller 60 determines whether the SOC of the battery 50 is lower than the first target amount of charge SOC_E and the engine 90 is in the on idle state or the SOC of the battery 50 is in the second It is determined whether or not the engine is in an on state (second idle state), which is lower than the target charge amount SOC_S (step S2). That is, the hybrid controller 60 determines whether or not the engine 90 has been turned on to charge the battery 50.

The hybrid controller 60 determines whether the displacement amount of the deceleration pedal is greater than the reference displacement amount A% through the deceleration pedal detection unit 10 Prohibition condition) (step S3).

If it is determined that the amount of displacement of the deceleration pedal is larger than the reference displacement amount A%, the hybrid controller 60 controls the engine 90 to be off (step S4). For example, when the reference displacement amount A% is set to 30% and the driver steps on the deceleration pedal by 30% and steps on by 70% or more when the vehicle is in the stop state during travel, the hybrid controller 60 determines that the amount of displacement of the deceleration pedal Is larger than the displacement amount.

Likewise, even when the driver steps on the deceleration pedal by 90% and then steps off by 50% when the driver is in the stop state while driving, the hybrid controller 60 determines that the amount of displacement of the deceleration pedal is larger than the reference displacement amount.

That is, when the vehicle is in the stop state during running, the driver can reflect the willingness to manually turn off the engine 90 to the vehicle control by changing the magnitude of the pressing force on the deceleration pedal. Then, the hybrid controller 60 determines whether the driver intends to perform the manual engine-off control according to the amount of displacement of the deceleration pedal, and stops the charging of the idle wheels.

As described above, when the engine 90 is turned off, the charged amount of the battery 50 gradually decreases. In this state, the hybrid controller 60 determines whether the number of times that the SOC of the battery 50 is less than the fourth target charging amount SOC_B (the first forced charging condition) or the engine 90 is turned off is once (cnt = 1) and the time Toff at which the engine 90 is turned off exceeds the preset first reference time T1 (the second forced charging condition) or the engine 90 is turned off It is determined whether the time Toff when the number of times is twice (cnt = 2) and the engine 90 is turned off exceeds a preset second reference time T2 (third forced charging condition) Step S5).

As a result of the determination, if any one of the first to third forced charging conditions is not satisfied, the hybrid controller 60 maintains the off state of the engine 90. On the other hand, if any one of the first to third forced charging conditions is satisfied, the hybrid controller 60 switches the engine 90 to the on state to start charging the idle (S6).

Next, the hybrid controller 60 determines whether the SOC of the battery 50 exceeds a preset third target amount of charge SOC_C (step S7). As a result of the determination, if the third target amount of charge SOC_C is not exceeded, the charging of the idle continues.

As a result of the determination, if the third target amount of charge SOC_C is exceeded, the hybrid controller 60 keeps the engine 90 on because the SOC of the battery 50 is less than the first target amount of charge SOC_E (Second charge prohibition condition) (step S8). At this time, when the running speed of the vehicle is 0 km / h and the speed change stage is located in at least one of the running stage (D stage) and the rear stage (R stage), the hybrid controller (60) .

As a result of the determination, when the stationary state of the vehicle is maintained at the idle SOC where the SOC of the battery 50 is kept below the first target amount of charge SOC_E and the engine 90 remains on, the hybrid controller 60 proceeds to S3 Go back to step. That is, since the SOC of the battery 50 is less than the first target charge amount SOC_E but the third target SOC (SOC_C) is exceeded, the hybrid controller 60 stops the forced charging and stops the engine manual off by the driver Allow.

On the other hand, if it is determined that the vehicle is not stationary in the idle SOC state where the SOC of the battery 50 is kept below the first target amount of charge SOC_E and the engine 90 is on, the hybrid controller 60 Determines whether the SOC of the battery 50 is equal to or greater than the first target amount of charge SOC_E (S9).

If the SOC of the battery 50 is equal to or greater than the first target amount SOC_E, the hybrid controller 60 turns off the engine 90 to terminate the idle charging (step S10).

On the other hand, if it is determined in step S3 that the displacement amount of the deceleration pedal is smaller than the reference displacement amount A%, the hybrid controller 60 proceeds to step S9.

FIG. 4 is a graph showing the idle charging method of the hybrid vehicle according to the embodiment of the present invention in terms of time and SOC of the battery.

4, the hybrid controller 60 turns on the engine 90 when the SOC of the battery 50 is lower than the second target amount of charge SOC_S at the time t1, And charges the battery 50 through the HSG 80. Then, the SOC of the battery 50 starts to rise. At this time, when the amount of displacement of the deceleration pedal becomes larger than the reference displacement amount A% at time t2 (BPS> A), the hybrid controller 60 turns off the engine 90.

Therefore, when the SOC of the battery 50 begins to decrease and the SOC of the battery 50 becomes lower than the fourth target amount of charge SOC_B at time t3, the hybrid controller 60 turns on the engine 90, And the battery 50 is forcibly charged through the HSG 80.

Then, the SOC of the battery 50 rises and exceeds the third target amount of charge SOC_C at time t4. At this time, the hybrid controller 60 does not permit the engine manual off by the driver from the time t3 to the time t4.

Next, when the amount of displacement of the deceleration pedal is larger than the reference displacement amount A% at time t5 (BPS> A), the hybrid controller 60 turns off the engine 90. [ Then, when the SOC of the battery 50 starts to decrease and becomes lower than the fourth target amount of charge SOC_B at time t6, the hybrid controller 60 forcibly charges the battery 50 again. If there is no manual engine-off operation of the driver, the hybrid controller 60 charges the battery 50 until the SOC of the battery 50 exceeds the first target amount of charge SOC_E.

On the other hand, when the SOC of the battery 50 is equal to or more than the fourth target amount of charge SOC_B after the engine 90 is turned off at time t2 but the time Toff1 when the engine 90 is first turned off, The hybrid controller 60 turns on the engine 90 at the time t7 and forcibly charges the battery 50 through the HSG 80. At this time,

If the SOC of the battery 50 exceeds the third target amount of charge SOC_C and the amount of displacement of the deceleration pedal is larger than the reference displacement amount A% at time t8 (BPS> A), the hybrid controller 60 controls the engine 90 are turned off.

If the SOC of the battery 50 is equal to or greater than the fourth target amount of charge SOC_B but the second time Toff2 of the engine 90 is off exceeds the second reference time T2, 60 turns on the engine 90 at time t9 and forcibly charges the battery 50 through the HSG 80. [

That is, in the embodiment of the present invention, when the idle charging is performed when the vehicle is in the stop state while the vehicle is running, the engine 90 can be manually turned off by the operation of the deceleration pedal of the driver to stop the idle charging. As a result, the battery 50 can be charged by the regenerative braking of the motor 120, not the HSG 80, thereby improving the charging efficiency. In addition, it is possible to reduce the risk of exhaust gas emissions during parking in a closed space such as a parking lot.

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 belongs to the scope of right.

10: Deceleration pedal detector
20:
30:
40: Battery Manager
50: Battery
60: Hybrid controller
70: Inverter
80: HSG
90: engine
100: engine controller
110: engine clutch
120: motor
130: Automatic transmission

Claims (13)

An idle charging apparatus for a hybrid vehicle using an engine and a driving motor as a power source,
An HSG that operates as a start motor connected to the engine and turns on the engine, and operates as a generator that charges an idle when the engine is turned on;
A battery electrically connected to the driving motor and the HSG;
A deceleration pedal detection unit for detecting a displacement amount of the deceleration pedal;
An accelerator pedal detector for detecting a displacement amount of the accelerator pedal;
A speed change stage detecting unit for detecting the position of the speed change stage;
A vehicle speed detector for detecting a vehicle speed; And
When the shift amount of the deceleration pedal, the position of the speed change stage and the vehicle speed are detected as a stop state during running, the engine is turned on in accordance with the SOC of the battery to perform the idle charging through the HSG, A hybrid controller for turning off the engine to stop the idle charging,
And an idle charging device for the hybrid vehicle. The method according to claim 1,
The hybrid controller
And detects the vehicle as a stopped state during traveling if the amount of displacement of the deceleration pedal is greater than zero, the vehicle speed is zero, and the speed change stage is located in either the traveling stage or the rearward diagnosis. The method according to claim 1,
The hybrid controller
And performs the idle charging when the SOC of the battery satisfies the normal charging condition that is less than the first target charging amount. The method of claim 3,
The hybrid controller
Wherein the charging of the idle vehicle is prohibited if the normal charging condition is satisfied and the displacement amount of the deceleration pedal is larger than a preset reference displacement amount. The method according to claim 1,
The hybrid controller
A first forced charging condition in which the SOC of the battery is less than a second target amount after the engine is turned off, a number of times the engine is turned off once, and a time when the engine is off is set to a first predetermined reference time The third forced charging condition in which the number of times the engine is turned off is twice and the time when the engine is turned off exceeds a second reference time set in advance, An idle charging device of the hybrid vehicle performing the charging operation. 6. The method of claim 5,
The hybrid controller
Wherein when the SOC of the battery charged according to any one of the first to third forced charging conditions exceeds a third target charging amount and the amount of displacement of the deceleration pedal is greater than a preset reference displacement amount, Idle charge control device. The method according to claim 1,
The hybrid controller
And resetting the idle charging if the displacement amount of the deceleration pedal is zero, the vehicle speed is larger than a preset reference speed, or the amount of displacement of the accelerator pedal is larger than a preset reference acceleration displacement amount. And a hybrid electric vehicle, which is connected to the engine and operates as a start motor for performing start-up of the engine, and includes a HSG that operates as a generator that performs idle charging when the engine is turned on, a drive motor that is electrically connected to the HSG, In the idle charging method,
Detecting a stopping state of the vehicle from a displacement amount of the deceleration pedal, a vehicle speed, and a gear position;
Determining whether an idle state is being charged from the SOC of the battery and the ON state of the engine; And
Stopping the idle charging according to a displacement amount of the deceleration pedal when the idle charging is being performed
And a charging method of the hybrid vehicle. 9. The method of claim 8,
The step of determining the stop state during traveling
And detecting whether the amount of displacement of the deceleration pedal is greater than zero, the vehicle speed is zero, and whether the speed change stage is located in a traveling stage or a rearward diagnosis. 9. The method of claim 8,
The step of stopping the idle charging
And switches the engine to an off state when the amount of displacement of the deceleration pedal is larger than a preset reference displacement amount. 9. The method of claim 8,
After the child charging is stopped
A second forced charging condition in which the SOC of the battery is less than a first target charging amount, a second forced charging condition in which the number of times the engine is turned off once, the time when the engine is turned off exceeds a preset first reference time, Switching the engine to an on state according to at least one of a third forced charging condition in which the number of times the engine is turned off is twice and a time when the engine is turned off exceeds a preset second reference time
Further comprising the steps of: 12. The method of claim 11,
Stopping the idle charging according to a displacement amount of the deceleration pedal when the SOC of the battery charged according to any one of the first to third forced charging conditions exceeds a third target charging amount How to charge children. 12. The method of claim 11,
Further comprising the step of resetting the idle charging if the amount of displacement of the deceleration pedal is zero, the vehicle speed is greater than a preset reference speed, or the displacement amount of the accelerator pedal is greater than a preset reference acceleration displacement amount.

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