KR970015166A

KR970015166A - Regenerative braking system for electric vehicles and its control method

Info

Publication number: KR970015166A
Application number: KR1019950029663A
Authority: KR
Inventors: 고성복
Original assignee: 한승준; 기아자동차 주식회사
Priority date: 1995-09-12
Filing date: 1995-09-12
Publication date: 1997-04-28

Abstract

본 발명은 전기자동차의 회생제동장치에 관한 것으로, 특히, 액셀레이터 페달의 가압상태를 검출하는 액셀레이터상태검출부(10)와; 브레이크 페달의 가압상태를 검출하는 브레이크상태검출부(50)와; 소정의 제어신호에 의해 전기자동차를 구동시키다가, 제동시 플레밍의 법칙에 의해 역기전력을 발생하는 구동모터(40)와; 소정의 제어신호에 의해 상기 구동모터(40)에 동력을 공급하는 구동배터리(70)와; 소정의 제어신호에 의해 상기 구동모터(40)와 구동배터리(70)의 동작을 제어하는 모터제어부(50)와; 상기 액셀레이터상태검출부(10)와 브레이크상태검출부(50)의 출력단과 모터제어부(50)의 제어신호 입력단 사이에 접속되어, 상기 액셀레이터와 브레이크의 가압상태를 검출하여, 상기 검출된 브레이크의 가압상태를, 브레이크의 가압상태에 따른 회생제동비율을 나타내는 소정의 데이타 테이블(DATA TABLE)과 비교하여, 구동모터(40)의 동작을 제어하는 소정의 제어신호를 상기 모터제어부(50)에 인가하는 마이컴(20)과; 상기 마이컴(20)에 접속되어, 회생제동비율을 선택하여 입력시키는 회생제동비율선택스위치부(60)를 포함하여 구성됨을 특징으로 하는 전기자동차의 회생제동장치와, 액셀레이터 페달의 가압상태와 브레이크 페달의 가압상태를 지속적으로 검출하여, 액셀레이터와 브레이크가 가압되지 않았을 경우에는, 운전자에게 순간적인 제동 충격을 주지 않는 소정의 값으로 초기 설정된 회생제동비율(A)로 브레이킹(BREAKING) 동작을 하는 상태검출 및 초기수행단계(100)와; 상기 상태검출 및 초기수행단계(100)를 수행한 결과, 브레이크 페달이 소정의 압력으로 가압 중인 것으로 판단됨에 따라, 브레이크 페달의 현재 가압 정도와 사용자에 의해 선택된 회생제동비율을 검출하는 회생제동모드검출단계(200)와; 회생제동비율이 각기 달리 선택된 다수의 회생제동모드로 이루어져, 상기 회생제동모드검출단계(200)에서 검출된 회생제동모드를 소정의 방법에 의해 수행하여 브레이킹 동작을 수행하는 회생제동모드수행단계(300)를 포함하여 구성됨을 특징으로 하는 전기자동차 회생구동장치의 제어방법이다.The present invention relates to a regenerative braking apparatus for an electric vehicle, and in particular, an accelerator state detection unit (10) for detecting a pressurized state of an accelerator pedal; A brake state detection unit 50 for detecting a pressurized state of the brake pedal; A driving motor 40 for driving the electric vehicle according to a predetermined control signal and generating back electromotive force by the law of Fleming during braking; A drive battery 70 for supplying power to the drive motor 40 by a predetermined control signal; A motor controller 50 for controlling the operation of the driving motor 40 and the driving battery 70 by a predetermined control signal; It is connected between the accelerator state detection unit 10 and the output terminal of the brake state detection unit 50 and the control signal input terminal of the motor control unit 50 to detect the pressurized state of the accelerator and the brake to detect the pressurized state of the detected brake. In comparison with a predetermined data table showing the regenerative braking ratio according to the pressurized state of the brake, a microcomputer for applying a predetermined control signal for controlling the operation of the driving motor 40 to the motor controller 50 ( 20); A regenerative braking apparatus for an electric vehicle, comprising a regenerative braking ratio selection switch unit 60 connected to the microcomputer 20 to select and input a regenerative braking ratio, and a pressurized state of an accelerator pedal and a brake pedal. When the accelerator and brake are not pressurized and the accelerator and brake are not pressurized, the state detection that performs the breaking operation at the regenerative braking ratio A initially set to a predetermined value that does not give the driver a momentary braking shock is detected. And initial performing step (100); As a result of performing the state detection and initial execution step 100, it is determined that the brake pedal is being pressurized to a predetermined pressure, so that the regenerative braking mode detection for detecting the current pressing degree of the brake pedal and the regenerative braking ratio selected by the user is performed. Step 200; Regenerative braking mode is composed of a plurality of regenerative braking mode, each differently selected, performing the regenerative braking mode detected in the regenerative braking mode detection step 200 by a predetermined method to perform the braking operation step 300 ) Is a control method of an electric vehicle regenerative driving apparatus, characterized in that the configuration including.

Description

Regenerative braking system for electric vehicles and its control method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명 "전기자동차의 회생제동장치"의 구성을 나타낸 블럭도,1 is a block diagram showing the configuration of the "regenerative braking apparatus for an electric vehicle" of the present invention;

제2도는 본 발명 "전기자동차의 회생제동장치"을 나타낸 신호 흐름도,2 is a signal flow diagram showing the "regenerative braking apparatus for an electric vehicle" of the present invention;

제3도는 본 발명 "전기자동차의 회생제동장치의 제어방법"에 있어서, 회생제동비율과 브레이크 페달의 가압률의 관계를 나타낸 도면.3 is a diagram showing the relationship between the regenerative braking ratio and the pressurization ratio of the brake pedal in the "control method of the regenerative braking apparatus of an electric vehicle" of the present invention.

Claims

An accelerator state detection unit for detecting a pressurized state of the accelerator pedal; A brake state detection unit detecting a pressurized state of the brake pedal; A driving motor which drives the electric vehicle by a predetermined control signal and generates counter electromotive force by the law of Fleming during braking; A drive battery for supplying power to the drive motor by a predetermined control signal; A motor control unit controlling the operation of the driving motor and the driving battery according to a predetermined control signal; It is connected between the output state of the accelerator state detection unit, the brake state detection unit, and the control signal input terminal of the motor control unit, and detects the pressurized state of the accelerator and the brake, thereby regulating the detected pressurized state of the brake according to the pressurized state of the brake. A microcomputer for applying a predetermined control signal for controlling the operation of a driving motor to the motor control unit in comparison with a predetermined data table indicating a ratio; A regenerative braking apparatus for an electric vehicle, comprising: a regenerative braking ratio selecting switch unit connected to the microcomputer to select and input a regenerative braking ratio.

By continuously detecting the pressurized state of the accelerator pedal and the pressurized state of the brake pedal, when the accelerator and the brake are not pressurized, the braking operation is performed at the regenerative braking rate set to a predetermined value that does not give the driver a momentary braking shock. State detection and initial performance steps; A regenerative braking mode detecting step of detecting a current degree of pressurization of the brake pedal and a regenerative braking ratio selected by the user as it is determined that the brake pedal is being pressed at a predetermined pressure as a result of performing the state detecting and initial performing step; The regenerative braking ratio is composed of a plurality of regenerative braking modes differently selected, and includes a regenerative braking mode performing step of performing a braking operation by performing a regenerative braking mode detected in the regenerative braking mode detecting step by a predetermined method. A control method of an electric vehicle regenerative drive device characterized in that.

The regenerative braking mode of each of the regenerative braking mode performing steps detects the pressurized state of the brake pedal until the accelerator pedal is pressed, and the detected pressurized state of the brake pedal is set to the pressurized state of the brake. Compared with the predetermined data table showing the regenerative braking ratio according to the present invention, when the current regenerative braking ratio does not reach the regenerative braking ratio according to the detected pressure state of the brake pedal, the regenerative braking corresponding to the pressure of the detected brake pedal is satisfied. And regulating the regenerative braking ratio until the ratio is reached, and ultimately reaching the regenerative braking ratio selected by the user.

※ Note: The disclosure is based on the initial application.