Method and system for displaying efficiency of regenerative braking for environmentally-friendly vehicle

Abstract

A method and a system for displaying efficiency of regenerative braking for an environmentally-friendly vehicle to better educate drivers in regards to their braking habits and hopefully teach them how to improve the fuel efficiency of the vehicle through adjustment of their braking habits while improving the quality of a vehicle by displaying the regenerative braking efficiency in comparison to a total amount of braking during the braking of the environmentally-friendly vehicle on a cluster. In particular, a total amount of braking while the vehicle is braking, and a ratio of the amount of regenerative braking included in the total amount of braking is calculated by a controller. Then the controller determines whether the vehicle is stopped due to braking. Once the vehicle has stopped due to braking, the calculated ratio of the amount of regenerative braking is displayed on a cluster in the vehicle.

Claims

1. A method of displaying efficiency of regenerative braking for an environmentally-friendly vehicle, comprising: calculating, by a controller, a total amount of braking while braking the vehicle; calculating, by the controller, a ratio of an amount of regenerative braking included in the total amount of braking; and displaying, on a display, the ratio of the amount of regenerative braking calculated by the controller, wherein after the calculated ratio of the amount of regenerative braking is displayed on the cluster, once an accelerator pedal of the vehicle is operated and a signal from an acceleration of an accelerator pedal position sensor generated due to the operation of the accelerator pedal is input, the calculated ratio of the amount of regenerative braking is reset, and the display on the cluster disappears.

2. The method of claim 1, wherein: the calculating of the total amount of braking and the calculating of the ratio of the amount of regenerative braking are performed based upon receiving a signal of an active hydraulic boost (AHB) of the environmentally-friendly vehicle.

3. The method of claim 2, wherein: the calculated ratio of the amount of regenerative braking is displayed on a cluster in a pop-up form.

4. A system for displaying efficiency of regenerative braking of an environmentally-friendly vehicle, comprising: a brake pedal sensor (BPS) configured to detect an operation of a brake pedal; an accelerator pedal sensor (APS) configured to detect an operation of an accelerator pedal; an active hydraulic boost (AHB) configured to calculate a total amount of braking required for braking and an amount of regenerative braking included in the total amount of braking while braking; a cluster configured to display various information about the vehicle; and a controller configured to receive signals from the BPS, the APS, and the AHB, and control display of efficiency of regenerative braking of the vehicle on the cluster based on the received signals, wherein the regenerative braking is displayed on the cluster, once an accelerator pedal of the vehicle is operated and a signal from an acceleration of an accelerator pedal position sensor generated due to the operation of the accelerator pedal is input, the calculated amount of regenerative braking is reset, and the display on the cluster disappears.

5. A non-transitory computer readable medium containing program instructions executed by a processor on a controller, the computer readable medium comprising: program instructions that calculate a total amount of braking while braking the vehicle; program instructions that calculate a ratio of an amount of regenerative braking included in the total amount of braking; and program instructions that display the ratio of the amount of regenerative braking calculated by the controller, wherein after the calculated ratio of the amount of regenerative braking is displayed on the cluster, once an accelerator pedal of the vehicle is operated and a signal from an acceleration of an accelerator pedal position sensor generated due to the operation of the accelerator pedal is input, the calculated ratio of the amount of regenerative braking is reset, and the display on the cluster disappears.

6. The method of claim 5, wherein: the calculating of the total amount of braking and the calculating of the ratio of the amount of regenerative braking are performed based upon receiving a signal of an active hydraulic boost (AHB) of the environmentally-friendly vehicle.

7. The method of claim 5, wherein: the calculated ratio of the amount of regenerative braking is displayed on a cluster in a pop-up form.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a block configuration diagram schematically illustrating a hybrid vehicle, which is an example of an environmentally-friendly vehicle.

(2) FIG. 2 is a display state of a cluster notifying a regenerative braking state of an environmentally-friendly vehicle.

(3) FIGS. 3A-B are graphs illustrating a comparison of a magnitude of electrical energy converted during sudden braking and gradual braking.

(4) FIG. 4 is a configuration diagram illustrating a system for displaying efficiency of regenerative braking for the environmentally-friendly vehicle according to an exemplary embodiment of the present invention.

(5) FIG. 5 is a flowchart illustrating a method of displaying efficiency of regenerative braking of an environmentally-friendly vehicle according to an exemplary embodiment of the present invention.

(6) FIG. 6 is an example of a display of efficiency of regenerative braking displayed on a cluster according to the exemplary embodiment of the present invention.

DETAILED DESCRIPTION OF THE EMBODIMENTS

(7) Hereinafter, the present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

(8) In the specification, unless explicitly described to the contrary, the word comprise and variations such as comprises or comprising will be understood to imply the inclusion of stated elements but not the exclusion of any other elements. Like reference numerals designate like elements throughout the specification.

(9) It is understood that the term vehicle or vehicular or other similar term as used herein is inclusive of motor vehicles in general such as passenger automobiles including sports utility vehicles (SUV), buses, trucks, various commercial vehicles, watercraft including a variety of boats and ships, aircraft, and the like, and includes hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles, fuel cell vehicles and other alternative fuel vehicles (e.g. fuels derived from resources other than petroleum). As referred to herein, a hybrid vehicle is a vehicle that has two or more sources of power, for example both gasoline-powered and electric-powered vehicles.

(10) Additionally, it is understood that the below methods are executed by at least one controller. The term controller refers to a hardware device that includes a memory and a processor configured to execute one or more steps that should be interpreted as its algorithmic structure. The memory is configured to store algorithmic steps and the processor is specifically configured to execute said algorithmic steps to perform one or more processes which are described further below.

(11) Furthermore, the control logic of the present invention may be embodied as non-transitory computer readable media on a computer readable medium containing executable program instructions executed by a processor, controller or the like. Examples of the computer readable mediums include, but are not limited to, ROM, RAM, compact disc (CD)-ROMs, magnetic tapes, floppy disks, flash drives, smart cards and optical data storage devices. The computer readable recording medium can also be distributed in network coupled computer systems so that the computer readable media is stored and executed in a distributed fashion, e.g., by a telematics server or a Controller Area Network (CAN).

(12) The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms a an and the are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms comprises and/or comprising, when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term and/or includes any and all combinations of one or more of the associated listed items.

(13) FIG. 4 is a block diagram schematically illustrating a system for displaying efficiency of regenerative braking for the environmentally-friendly vehicle according to an exemplary embodiment of the present invention. The system for displaying efficiency of regenerative braking for the environmentally-friendly vehicle according to the exemplary embodiment of the present invention is a system for displaying efficiency of the amount of regenerative braking to a total amount of braking while braking on a cluster.

(14) The system for displaying efficiency of regenerative braking for the environmentally-friendly vehicle according to the exemplary embodiment of the present invention includes: a brake pedal sensor (BPS) that is configured to and senses an operation of a brake pedal 301; an accelerator pedal sensor (APS) 320 that is configured to and detects an operation of an accelerator pedal 302; an active hydraulic boost 400 that is configured to an calculates a total amount of braking required for braking and the amount of regenerative braking included in the total amount of braking during the braking, a cluster 600 that is configured to and displays various information about the environmentally-friendly vehicle; a controller 300 that is configured to and receives signals from the BPS 310, the APS 320, and the AHB 400, and displays on the cluster 600 efficiency of regenerative braking of environmentally-friendly vehicle based on the received signal; and a controller area network (CAN) communicator 500 for transmitting a signal and/or information processed by the controller 300 to the cluster 600.

(15) More specifically, the BPS 310 inputs a signal according to operational force applied to the brake pedal 301 to the controller 300 upon force being applied to the brake pedal 301, and the APS 320 inputs a signal according to operational force applied to the accelerator pedal 302 to the controller 300 during the operation of the accelerator pedal 302.

(16) The AHB 400 and the CAN communicator 500 may be any AHB and a CAN communicator that is typically applied to a vehicle according to the related art, so that detailed descriptions thereof will be omitted.

(17) The cluster 600 utilizes a pop up type format to notify the user of the regenerative braking efficiency, and as such may utilize a cluster that is already utilized in a vehicle according to the related art.

(18) The controller 300, as mentioned above, may be made up of one or more microprocessors operated by a predetermined program and/or a hardware including the microprocessors. Non-transitory program instructions may be executed thereby as a series of commands for performing the method of displaying efficiency of regenerative braking for an environmentally-friendly vehicle according to an exemplary embodiment of the present invention to be described below.

(19) Additionally, in the exemplary embodiment of the present invention, the controller 300 may be included in the AHB 400 or may include the AHB 400. Alternatively, in a case where the controller 300 is applied to the hybrid vehicle, the controller 300 may be included in the hybrid control unit (HCU) 200 illustrated in FIG. 1, or the controller 300 may include the hybrid control unit. Even further, the controller 300 may be included in a body control unit (BCU) (not illustrated) or include the body control unit.

(20) Hereinafter, a method of displaying efficiency of regenerative braking for an environmentally-friendly vehicle according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

(21) FIG. 5 is a flowchart illustrating a method of displaying efficiency of regenerative braking of an environmentally-friendly vehicle according to an exemplary embodiment of the present invention. As illustrated in FIG. 5, when a driver applies the brakes by stepping on the brake pedal 301, the BPS 310 applies a signal corresponding to operational force applied to the brake pedal 301 to the controller 300 and the AHB 400 (S100).

(22) Once the signal generated by the braking is input to the controller 300 and the AHB 400 from the BPS 310, the controller 300 and/or the AHB 400 calculate a total amount of braking required for the braking based on the input braking signal (S200). The total amount of braking calculated may be, for example, a total amount of braking generally calculated by the AHB 400.

(23) Once the total amount of braking is calculated in step S200, the controller 300 calculates a ratio of the amount of regenerative braking included in the total amount of braking based on the signal of the AHB 400 (S300). Once the ratio of the amount of regenerative braking is calculated, the controller 300 determines whether the environmentally-friendly vehicle has stopped due to the braking (S400).

(24) For example, when a signal of a velocity sensor (not illustrated) of the vehicle is 0, it may be determined that the environmentally-friendly vehicle has stopped. However, it should not be understood that the scope of the present invention is essentially limited thereto.

(25) Once the controller 300 has determined that the environmentally-friendly vehicle is stopped as a result of the determination in step S400, the controller 300 transmits the calculated ratio of the amount of regenerative braking to the cluster 600 through the CAM communicator 500 to be displayed in a pop-up form (S500). A display of the ratio of the amount of regenerative braking displayable on the cluster 600 according to the exemplary embodiment of the present invention is illustrated in FIG. 6.

(26) Referring to FIG. 6, the controller 300 may display the ratio of the amount of regenerative braking on the cluster 600 in an analog form and/or a digital form. When a driver operates the accelerator pedal 302 when the ratio of the amount of regenerative braking is displayed as illustrated in FIG. 6, the controller 300 receives a signal according to the operation of the accelerator pedal 302 from the APS 320 to initialize or reset the calculated ratio of the amount of regenerative braking, and clears the display of the ratio of the amount of regenerative braking displayed on the cluster 600 (S600 and S700).

(27) While this invention has been described in connection with what is presently considered to be practical exemplary embodiments, 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 appended claims.

DESCRIPTION OF SYMBOLS

(28) 300: Controller

(29) 310: BPS (brake pedal sensor)

(30) 320: APS (acceleration position sensor)

(31) 400: Active hydraulic boost (AHB)

(32) 600: Cluster