KR101693946B1 - A sbw control method for hybrid vehicle and a control apparatus thereof - Google Patents

Abstract

The present invention relates to a SBW control method for a hybrid vehicle and a control apparatus therefor. A SBW control method for a hybrid vehicle according to an embodiment of the present invention includes a D-step input step (SlOO) for inputting a D-stage to a transmission of a hybrid vehicle and starting traveling; A regenerative braking step (S200) of performing regenerative braking at the time of deceleration during running after the step D100 (step S100); An N-step input blocking step (S300) for blocking input of an N-step to the transmission of the hybrid vehicle in the regenerative braking step (S200); A step S400 of determining whether or not regenerative braking is unnecessary after the N-step input interception step S300; And an N-step input permitting step (S500) for permitting N-step input if it is determined that the regenerative braking is not necessary in the determining step (S400). According to the present invention, the speed change stage that induces the optimum fuel consumption during driving is popped up, so that the fuel consumption of the hybrid vehicle can be maximized.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an SBW control method for a hybrid vehicle,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a SBW control method and a control apparatus for a hybrid vehicle, and more particularly, to a SBW control method and a control apparatus for a hybrid vehicle that enable a driver to perform an optimum fuel mileage.

In recent years, interest in energy efficiency and environmental pollution has become increasingly important, and development of environmentally friendly vehicles capable of substantially replacing internal combustion engine vehicles has been required. Such environmentally friendly vehicles are usually powered by fuel cells or electric vehicles, And a hybrid vehicle driven by an engine and a battery. A hybrid vehicle is a next generation vehicle for reducing exhaust gas and improving fuel economy. The hybrid vehicle includes an electric motor for driving wheels of a vehicle other than the engine. The hybrid vehicle includes a battery for discharging electric power to electric components including the electric motor.
When the drive motor is stopped (particularly, when the brake pedal is pressed) in such an electric vehicle or a hybrid vehicle, the torque applied in the traveling direction of the drive motor is cut off and the torque applied to the drive motor So that the vehicle can be braked by the drive motor by applying the torque to rotate in the opposite direction. That is, when the brake pedal is pressed while the electric vehicle or the hybrid vehicle is running, the power supplied to the drive motor is cut off and the back electromotive force generated inversely at the power supply terminal of the drive motor rotating by the forward inertial force of the vehicle is transmitted to the drive motor The braking force is generated by causing the driving motor to rotate in the reverse direction with respect to the traveling direction. Such braking force generation is referred to as " regenerative braking. &Quot;
In general, the driver is shifted to the N-stage in order to improve the fuel economy in the case of running on the D-stage, on the downhill, or on the other-way. However, in the case of the hybrid vehicle, when the vehicle is shifted to the N-th stage, the regenerative braking can not be performed at the N-th stage because the motor is not driven while the connection between the vehicle wheel and the motor shaft is released. Therefore, a general driver who does not know such a problem has a problem of causing fuel consumption loss rather than N-speed.
In order to prevent such a problem, conventionally, even when the N-step is inputted during the running from the hybrid vehicle in which the SBW (Shift by Wire, electronic transmission control system) is applied to the D-stage, the shift to the N-stage is prevented. However, the conventional technology has a problem that the driver can doubt the vehicle abnormality and recognize that the driver can not drive the fuel economy, thereby greatly deteriorating the merchantability.
In addition, even when the N-stage running is advantageous to the fuel economy rather than the regenerative braking, such as when the battery charging of the hybrid vehicle is completed, the N-stage shift is forcibly prevented, which is disadvantageous in terms of actual fuel consumption.

Open Patent Publication No. 10-2012-0119231 (Oct. 31, 2012)

SUMMARY OF THE INVENTION It is an object of the present invention to provide an SBW control method of a hybrid vehicle that interrupts an N-stage input during regenerative braking of a hybrid vehicle and a control apparatus therefor.

A SBW control method for a hybrid vehicle according to an embodiment of the present invention includes a D-step input step (SlOO) for inputting a D-stage to a transmission of a hybrid vehicle and starting traveling; A regenerative braking step (S200) of performing regenerative braking at the time of deceleration during running after the step D100 (step S100); An N-step input blocking step (S300) for blocking input of an N-step to the transmission of the hybrid vehicle in the regenerative braking step (S200); A step S400 of determining whether or not regenerative braking is unnecessary after the N-step input interception step S300; And an N-step input permitting step (S500) for permitting N-step input if it is determined that the regenerative braking is not necessary in the determining step (S400).
If it is determined in the determining step S400 that regenerative braking is necessary, the N-step input blocking step S300 is performed.
In the N-step input blocking step S300, the N-speed shift button of the shift button assembly 200 is popped down.
In the N-step input allowing step S500, the N-speed shift button of the shift button assembly 200 is popped up.
The determining step (S400) includes a charging amount sensing step (S410) of sensing a charged amount of the battery.
The determining step S400 may include determining whether the battery is completely charged (S420).
A SBW controller of a hybrid vehicle according to another embodiment of the present invention includes a battery 100 that stores and supplies power for driving a hybrid vehicle; A shift button assembly 200 for inputting a running mode of the hybrid vehicle; And an ECU (300) for determining whether or not regenerative braking is necessary according to the charged amount of the battery (100) and controlling the shift button assembly (200).
A button guide 211 protrudes from one side of the shift button assembly 200 and a cylindrical button groove 212 is formed upward from a center of the bottom surface of the shift button assembly 200. The button groove 212 has a button- (210).
The shift button assembly 200 includes a button 220 disposed on an upper surface of the button housing 210 and pressed downward by a driver's operation.
And a leaf spring 230 disposed under the button 220 and restoring the button 220 when the button 220 is not operated by the driver.
And a pressure sensor 240 disposed under the leaf spring 230 for sensing whether the button 220 is operated.
And a screw 250 that is bolted to the button groove 212 and supports the button housing 210.
And a motor 260 connected to the screw 250 to rotate the screw 250.
And a guide groove 271 into which the button guide 211 is inserted is formed in the operating direction of the button 220 and a main housing 270 surrounding the button 220.

As described above, according to the present invention, the gear stage leading to the optimal fuel economy during driving is popped up, so that the fuel economy of the hybrid vehicle can be maximized.
In addition, it is easy to recognize that the driver is currently driving the optimum fuel economy, and thus the commerciality can be improved.

1 is a flowchart of a SBW control method of a hybrid vehicle according to an embodiment of the present invention;
2 is a detailed flowchart of a SBW control method of a hybrid vehicle according to an embodiment of the present invention;
3 is a block diagram of an SBW control apparatus for a hybrid vehicle according to another embodiment of the present invention.
4 is a plan view and a perspective view of a button assembly of a SBW control device of a hybrid vehicle according to another embodiment of the present invention.
5 is a partial perspective view of an SBW control apparatus for a hybrid vehicle according to another embodiment of the present invention.
6 is a perspective view of a SBW control device of a hybrid vehicle according to another embodiment of the present invention.
7 is a view for explaining pop-up and pop-down operations of an SBW control device of a hybrid vehicle according to another embodiment of the present invention;
8 is a view for explaining operation of a SBW control device of a hybrid vehicle according to another embodiment of the present invention when a button is pressed.

It is to be understood that the words or words used in the present specification and claims are not to be construed in a conventional or dictionary sense and that the inventor can properly define the concept of a term to describe its invention in the best way And should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a flowchart of a SBW control method of a hybrid vehicle according to an embodiment of the present invention, and FIG. 2 is a detailed flowchart of a SBW control method of a hybrid vehicle according to an embodiment of the present invention. 1 and 2, an SBW control method of a hybrid vehicle according to an embodiment of the present invention includes a D-step input step S100, a regenerative braking step S200, an N-step input blocking step S300, (S400) and an N-step input permission step (S500).
The D-step input step (SlOO) is a step of inputting the D-stage to the transmission of the hybrid vehicle and starting running. In the case of a hybrid vehicle, regenerative braking can be performed only in the D-stage input state in which the vehicle wheels and the motor shaft are connected. Therefore, it is required to input the D-stage to the transmission of the hybrid vehicle.
The regenerative braking step (S200) is a step of performing regenerative braking at the time of deceleration during running after the step (S100) of the step (D). The regenerative braking is a method in which when the brake pedal is pressed while the hybrid vehicle is in progress, the power supplied to the driving motor is cut off and the back electromotive force generated in the power supply terminal of the driving motor rotating by the forward inertia force of the vehicle is applied again to the driving motor The driving motor is rotated in the reverse direction with respect to the traveling direction, thereby generating the braking force.
The N-step input interception step S300 is a step of interrupting input of the N-th stage to the transmission of the hybrid vehicle in the regenerative braking step S200. In the case of a hybrid vehicle, when the vehicle is shifted to the N-th stage, since the motor is not driven while the connection between the vehicle wheel and the motor shaft is released, regenerative braking can not be performed at the N-stage. In order to prevent this, in the N-step input blocking step S300, an N-stage shift button among the buttons 220 of the shift button assembly 200 to be described later is popped down and input of the N-stage into the transmission of the hybrid vehicle is blocked .
The determining step S400 is a step of determining whether or not regenerative braking is unnecessary after the N-step input blocking step S300. The determining step S400 includes a charging amount sensing step S410 for sensing a battery charging amount and a battery charging completion determination step S420 for determining whether charging of the battery is completed. That is, it is determined whether the regenerative braking is unnecessary or whether the N-stage running is more favorable to the fuel economy than the regenerative braking. If it is determined in step S400 that regenerative braking is necessary, the N-step input blocking step S300 is performed.
The N-step input permitting step S500 is a step of permitting the N-step input if it is determined that regenerative braking is not necessary in the determining step S400. That is, when it is determined that the regenerative braking is unnecessary or the N-stage running is more favorable to the fuel economy than the regenerative braking, the N-speed shift button of the shift button assembly 200 pops up and allows N-step input.
According to the control method described above, the N-speed shift button pops up when the shift is unnecessary at the N-th stage, and the N-shift button is popped up when the fuel efficiency rises at the N-shift. Therefore, the driver can easily recognize whether or not the N-stage running is favorable to the fuel economy as compared with the regenerative braking and can induce the N-stage or D-stage shifting of the driver to maximize the fuel efficiency of the hybrid vehicle while driving .
FIG. 3 is a block diagram of an SBW control apparatus for a hybrid vehicle according to another embodiment of the present invention, and FIG. 4 is a plan view and a perspective view of a button assembly of a SBW control apparatus for a hybrid vehicle according to another embodiment of the present invention. FIG. 5 is a partial perspective view of an SBW control device of a hybrid vehicle according to another embodiment of the present invention, and FIG. 6 is a perspective view of a SBW control device of a hybrid vehicle according to another embodiment of the present invention. 3 to 6, an SBW control apparatus for a hybrid vehicle according to another embodiment of the present invention includes a battery 100, a shift button assembly 200, and an ECU 300.
The battery 100 is a component for storing and supplying electric power for running the hybrid vehicle. The shift button assembly 200 is a component for inputting the running mode of the hybrid vehicle, and the ECU 300 controls the battery 100 And determines the necessity of regenerative braking according to the charged amount of the shift button assembly 200 and controls the shift button assembly 200.
The shift button assembly 200 includes a button housing 210, a button 220, a leaf spring 230, a pressure sensor 240, a screw 250, a motor 260, and a main housing 270.
A button guide 211 protrudes from one side of the button housing 210 and a cylindrical button groove 212 is formed upward from the bottom center of the button housing 210. A thread is formed on the inner wall of the button groove 212. The button 220 is disposed on the upper surface of the button housing 210 and is depressed downward by the operation of the driver.
The leaf spring 230 is disposed under the button 220 and restores the button 220 when the driver does not operate. The pressure sensor 240 is disposed below the leaf spring 230 to detect whether the button 220 is operated.
The screw (250) is bolted to the button groove (212) to support the button housing (210). The motor 260 is connected to the rotation shaft and the screw 250 to rotate the screw 250.
The main housing 270 is formed with a guide groove 271 into which the button guide 211 is inserted in an operating direction of the button 220 and surrounds the button 220.
7 is a view for explaining pop-up and pop-down operations of an SBW control apparatus of a hybrid vehicle according to another embodiment of the present invention. 7, in the SBW control apparatus for a hybrid vehicle according to another embodiment of the present invention, a button (for example, an N-step shift button in the N-step input permission step S500) 260 rotate in one direction, and accordingly, the screw 250 connected to the rotation axis of the motor 260 also rotates in the same direction. However, the button housing 210 including the screw hole 250 and the button hole 212 coupled with the bolt-nut can not be rotated by the button guide 211 and the guide groove 271 of the main housing 270 It will rise.
On the other hand, when the motor 260 of the button requiring the pop-down (for example, the N-speed change button in the N-step input blocking step S300) rotates in the direction opposite to the motor 260 of the button requiring the pop-up The screw 250 connected to the rotation axis of the motor 260 also rotates in the same direction. However, the button housing 210 including the screw hole 250 and the button hole 212 coupled with the bolt-nut can not be rotated by the button guide 211 and the guide groove 271 of the main housing 270 .
8 is a view for explaining operation of the SBW control device of the hybrid vehicle according to another embodiment of the present invention when a button is pressed. When the driver inputs the button 220 in the pop-up state of the button 220, the leaf spring 230 disposed under the button 220 is pressed to press the pressure sensor 240. Accordingly, when the transmission signal is transmitted to the pressure sensor 240, the transmission operates. On the contrary, after the driver inputs the button 220, the button 220 is raised to its original position by the restoring force of the leaf spring 230.
It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory only and are not restrictive of the invention, as claimed, and will be fully understood by those of ordinary skill in the art. The present invention is not limited thereto. It will be apparent to those skilled in the art that various substitutions, modifications and variations are possible within the scope of the present invention, and it is obvious that those parts easily changeable by those skilled in the art are included in the scope of the present invention .

100 battery
200 shift button assembly
210 Button housing
211 Button Guide
212 Button Home
220 buttons
230 leaf spring
240 pressure sensor
250 screw
260 Motor
270 Main housing
271 Guide home
300 ECU

Claims (14)

A D-stage input step (SlOO) for inputting a D-stage to the transmission of the hybrid vehicle and starting traveling;
A regenerative braking step (S200) of performing regenerative braking at the time of deceleration during running after the step D100 (step S100);
An N-step input blocking step (S300) for blocking input of an N-step to the transmission of the hybrid vehicle in the regenerative braking step (S200);
A step S400 of determining whether or not regenerative braking is unnecessary after the N-step input interception step S300; And
If it is determined in step S400 that regenerative braking is not required, an N-step input permitting step (S500) for permitting N-step input;
The SBW control method of a hybrid vehicle according to claim 1,
In the N-step input blocking step S300, the N-speed shift button of the shift button assembly 200 pops down,
The SBW control device of the hybrid vehicle includes:
A battery 100 for storing and supplying electric power for running the hybrid vehicle;
A shift button assembly 200 for inputting a traveling mode of the hybrid vehicle and including the N-speed shift button; And
An ECU (300) for determining whether the regenerative braking is necessary according to the charged amount of the battery (100) and controlling the shift button assembly (200);
Lt; / RTI >
A button guide 211 protrudes from one side of the shift button assembly 200 and a cylindrical button groove 212 is formed upward from a center of the bottom surface of the shift button assembly 200. The button groove 212 has a button- (210);
A screw (250) bolt-nut-coupled to the button groove (212) to support the button housing (210); And
A motor 260 coupled to the rotating shaft to rotate the screw 250;
/ RTI >
In the N-step input blocking step S300, the motor 260 rotates the screw 250 in a direction in which the N-speed change button is popped down. The method according to claim 1,
If it is determined in the determining step S400 that regenerative braking is necessary, the N-step input blocking step S300 is performed. delete The method according to claim 2, wherein
Wherein the N-step shift button of the shift button assembly (200) pops up in the N-step input allowance step (S500). The method according to claim 1,
Wherein the determining step (S400) includes a charging amount sensing step (S410) of sensing a charged amount of the battery. 6. The method of claim 5,
Wherein the determining step S400 includes a step S420 of determining whether the battery charging is completed or not (S420). A battery 100 for storing and supplying electric power for running the hybrid vehicle;
A shift button assembly 200 for inputting a running mode of the hybrid vehicle and including an N-speed shift button; And
An ECU (300) for determining whether the regenerative braking is necessary according to the charged amount of the battery (100) and controlling the shift button assembly (200);
The SBW controller of the hybrid vehicle includes:
A button guide 211 protrudes from one side of the shift button assembly 200 and a cylindrical button groove 212 is formed upward from a center of the bottom surface of the shift button assembly 200. The button groove 212 has a button- (210);
A screw (250) bolt-nut-coupled to the button groove (212) to support the button housing (210); And
A motor 260 coupled to the rotating shaft to rotate the screw 250;
/ RTI >
Wherein when the regenerative braking is required, the motor (260) rotates the screw (250) in a direction in which the N-speed shift button is popped down. delete 8. The method of claim 7,
Wherein the shift button assembly (200) comprises a button (220) disposed on an upper surface of the button housing (210) and pressed downward by an operation of a driver. 10. The method of claim 9,
And a leaf spring (230) disposed under the button (220) and restoring the button (220) to the original state when there is no operation by the driver. 11. The method of claim 10,
And a pressure sensor (240) disposed at a lower portion of the leaf spring (230) for sensing whether the button (220) is operated or not. delete delete 10. The method of claim 9,
Wherein the guide groove (271) in which the button guide (211) is inserted is formed in an operating direction of the button (220), and a main housing (270) surrounding the button (220) SBW control device.

Images