WO2022139201A2

WO2022139201A2 - Regenerative braking control system that is controllable by driver's foot

Info

Publication number: WO2022139201A2
Application number: PCT/KR2021/017371
Authority: WO
Inventors: 황성종
Original assignee: 황성종
Priority date: 2020-12-23
Filing date: 2021-11-24
Publication date: 2022-06-30
Also published as: WO2022139201A3

Abstract

According to an embodiment of the present invention, a regenerative braking system is provided, the regenerative braking system comprising: a pedal provided to be operated by the foot of a driver; a central control device which outputs a regenerative braking control signal to generate a regenerative braking force according to the amount of manipulation applied to the pedal; and a motor, the operation of which is controlled by the regenerative braking control signal.

Description

Regenerative braking control system that can be controlled by the driver's foot

The present invention relates to a regenerative braking control system that can be controlled by a driver's foot, and to a system that enables control of regenerative braking with a driver's foot using a pedal and a ratchet gear for regenerative braking control.

A brake system for performing braking is essential to a vehicle, and various types of brake systems have been proposed for the safety of drivers and passengers.

In addition, in recent years, as the market demand for eco-friendly vehicles increases, the popularity of electric vehicles or hybrid-driven vehicles is increasing. After that, a regenerative braking system that is used as an auxiliary to driving the vehicle is mounted.

On the other hand, today, there is still consumer demand for not only high-end or high-performance vehicles, but also economical compact or commercial vehicles. many.

Conventional regenerative braking systems were generally operated by the driver's hand.

Accordingly, there is a problem in that proper control of the regenerative braking system cannot be performed in a state in which the driver's hands are not free while driving.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems of the prior art described above.

An object of the present invention is to enable easy control of regenerative braking while driving by using a driver's feet.

Another object of the present invention is to enable linear control of regenerative braking through a driver's foot.

Another object of the present invention is to allow the driver to restore the pedal and the regenerative braking force through the release device while moving the pedal to a predetermined position, so as to control the regenerative braking force by manipulating the pedal up to the maximum displacement to increase the regenerative braking force. This is to ensure that the process of necessarily increasing is omitted.

Another object of the present invention is to move a pedal for controlling regenerative braking force to a hidden position so that it can be hidden.

Objects of the present invention are not limited to the objects mentioned above, and other objects not mentioned will be clearly understood from the description below.

According to an embodiment of the present invention for achieving the above object, the pedal is provided to be operated by the driver's foot; a central control unit outputting a regenerative braking control signal to generate regenerative braking force according to an operation amount applied to the pedal; and a motor whose operation is controlled by the regenerative braking control signal.

The regenerative braking system may further include a ratchet gear that mechanically transmits the manipulation of the pedal to the signal control circuit.

The signal control circuit may include a variable resistor for converting a signal from the ratchet gear into an electrical signal, and the central control unit may process the electrical signal to output the regenerative braking control signal.

The regenerative braking system may further include a release device connected to the fixing device of the ratchet gear and configured to restore the pedal to its initial displacement.

The pedal may be rotated in a direction different from a direction in which a manipulation amount is applied to the pedal to be hidden in a hidden position.

According to an embodiment of the present invention, it is possible to easily control the regenerative braking while driving through the feet of the driver.

According to an embodiment of the present invention, linear control of the regenerative braking is possible through the driver's foot.

According to an embodiment of the present invention, since the pedal and the regenerative braking force can be restored through the release device while the driver has moved the pedal to a predetermined position, the regenerative braking force is operated by operating the pedal up to the maximum displacement in order to adjust the regenerative braking force. It is possible to omit the process of necessarily increasing .

According to the embodiment of the present invention, since the pedal for controlling the regenerative braking force can be hidden by moving it to the hidden position, foot interference can be minimized in the driver's driving.

1 is a diagram schematically showing the configuration of a regenerative braking system according to an embodiment of the present invention.

2 is a graph illustrating a relationship between a pedal effort applied to a pedal and a regenerative braking force according to an exemplary embodiment of the present invention.

3 is a view for explaining that the pedal is moved to the hidden position according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0010] Reference is made to the accompanying drawings, which show by way of illustration specific embodiments in which the present invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be implemented in other embodiments with respect to one embodiment without departing from the spirit and scope of the invention. In addition, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the present invention. Accordingly, the following detailed description is not intended to be taken in a limiting sense, and the scope of the present invention, if properly described, is limited only by the appended claims, along with all scope equivalents to those claimed. Like reference numerals in the drawings refer to the same or similar functions throughout the various aspects.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily practice the present invention.

Referring to FIG. 1 , the system according to an embodiment of the present invention is configured to include a pedal 110 , a ratchet gear 120 , a signal control circuit 130 , a central control unit 140 , and a motor 150 . .

The pedal 110 is provided separately in addition to the accelerator and brake pedal inside the vehicle, and may be operated through the driver's foot. To this end, the pedal 110 may be disposed adjacent to the accelerator and brake pedal.

The ratchet gear 120 is a component that transmits the operation of the pedal 110 to the signal control circuit 130 . Different signals are mechanically transmitted to the signal control circuit 130 through the ratchet gear 120 according to the amount of operation of the pedal 110 . When the driver applies a certain amount of pedaling force to the pedal 110 , the ratchet gear 120 functions as a locking device for fixing the position of the pedal 110 at the corresponding position. When the driver applies pressure once more after reaching the maximum displacement of the pedal 110 , the locking device of the ratchet gear 120 is released, and both the pedal 110 and the regenerative braking force return to their initial displacements.

The signal control circuit 130 receives a signal having a magnitude proportional to the amount of operation of the pedal 110 through the ratchet gear 120 . This signal is a mechanical signal, which is converted into an electrical signal and transmitted to the central control unit 140 . The conversion into an electrical signal may use a method using a variable resistor. Specifically, an element having a variable resistance value according to the magnitude of a mechanical signal may be used. By the variable resistance element, electric signals (eg, voltage or current signals) of different magnitudes are output according to mechanical signals, and the electric signals converted in this way are transmitted to the central control unit 140 .

The central control unit 140 processes the electrical signal to generate a signal for controlling the motor 150 .

The central control unit 140 refers to an electric power control unit (EPCU) of a vehicle equipped with a motor, rather than an ECU of general automobile parts. Other elements are directly connected to the integrated power control device, and since the central control device 140 directly performs the following operation, the system according to the embodiment of the present invention can be applied without additional semiconductor components.

To this end, the central control unit 140 may include circuits such as a filter circuit, an analog-to-digital conversion circuit, a digital-to-analog conversion circuit, and a comparator.

The central control device 140 according to the embodiment of the present invention may generate the regenerative braking force to be linearly proportional to the amount of manipulation of the pedal, and accordingly generate the control signal for the motor 150 . In other words, the central control device 140 according to the embodiment of the present invention may generate the regenerative braking force linearly with respect to the operation amount of the pedal.

The operation of the motor 150 may be controlled by the regenerative braking force generation control signal generated by the central control unit 140 .

Meanwhile, when the driver operates the pedal 110 , the relationship between the pedal force and the regenerative braking force is as shown in FIG. 2 .

Referring to FIG. 2 , as the driver presses the pedal 110 , that is, the pedaling force increases, the regenerative braking force increases.

If the driver manipulates the pedal 110 with the first force to change to the “state to be reached” after the “current state” is reached, that is, to reduce the regenerative braking force, the driver operates the “current state” In "Status", you need to add more effort (No. ①).

That is, it is necessary to release the locking device of the ratchet gear 120 by stepping on the pedal 110 to the maximum displacement (No. ②, No. ③). When the locking device of the ratchet gear 120 is released, both the pedal 110 and the regenerative braking force return to their initial displacement. (110) should be placed.

Accordingly, a section in which the regenerative braking force is rather increased occurs while the driver fully depresses the pedal 110 , contrary to the intention of the driver.

Referring back to Figure 1, in the embodiment of the present invention, in order to prevent the above problem, the locking device of the ratchet gear 120 and connected to the unlocking device 160 is included.

Specifically, there is a fixing device functioning as a locking device of the ratchet gear 120 , and the unlocking device 160 is connected to the fixing device, whereby the driver is bidirectional rather than a unidirectional linear control method for the pedal 110 . Linear control is possible.

The unlocking device 160 may be operated by the driver, and is a component for releasing the locking device of the ratchet gear 120 .

Referring to FIG. 2 , in the "current state", when the driver operates the release device 160, the fixing device of the ratchet gear 120 is released, so that the pedal 110 and the ratchet gear 120 return to their initial displacement. can be

Meanwhile, according to an embodiment of the present invention, the pedal 110 may be hidden so as not to interfere with the driver's feet by rotating in a direction different from the direction in which the pedal force is applied to increase the regenerative braking force.

The hiding device 170 is a concept including a configuration that provides a moving force to the pedal 110 or a physical configuration that allows the pedal 110 to be fixed in a hidden position for hiding the pedal 110 .

As an example, the hiding device 170 may be implemented as shown in FIG. 3 .

Referring to FIG. 3 , the pedal 110 is provided separately from the brake pedal and the accelerator pedal in the foot space in the driver's seat, and may be provided to be operated in a direction parallel to the brake pedal and the accelerator pedal.

The driver rotates the pedal 110 in a direction other than the direction in which the pedal 110 is operated to increase the regenerative braking force, that is, the direction in which the pedaling force is applied, for example, in a direction perpendicular to the brake pedal and the accelerator pedal, to operate the pedal 110 . It can be moved to a hidden location.

Accordingly, when the driver does not control the regenerative braking force, foot interference can be minimized by hiding the pedal 110 in a hidden position.

According to an embodiment of the present invention, control of the regenerative braking may be performed by the driver's foot.

In addition, a control signal is generated linearly with respect to the amount of pedal operation of the driver, and accordingly, regenerative braking control for the motor is performed, so that the operation is easy and the regenerative braking force desired by the driver can be generated. do.

In addition, since the pedal and regenerative braking force can be restored through the release device while the driver has moved the pedal to a certain position, the process of increasing the regenerative braking force by manipulating the pedal up to the maximum displacement in order to control the regenerative braking force can be omitted.

Meanwhile, since the pedal for controlling the regenerative braking force can be hidden by moving it to the hidden position, foot interference can be minimized in the driver's driving.

The above description of the present invention is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a dispersed form, and likewise components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention.

Claims

a pedal provided to be operated by the driver's foot;

a central control unit outputting a regenerative braking control signal to generate regenerative braking force according to an operation amount applied to the pedal; and

and a motor whose operation is controlled by the regenerative braking control signal.
According to claim 1,

The regenerative braking system of claim 1, further comprising a ratchet gear that mechanically transmits an operation to the pedal to a signal control circuit.
3. The method of claim 2,

the signal control circuit includes a variable resistor for converting a signal from the ratchet gear into an electrical signal;

The central control unit processes the electrical signal to output the regenerative braking control signal.
3. The method of claim 2,

Connected to the fixing device of the ratchet gear, the regenerative braking system further comprising a release device for returning the pedal to the initial displacement.
According to claim 1,

The pedal is rotated in a direction different from a direction in which a manipulation amount is applied to the pedal and is hidden in a hidden position.