KR20200032383A - 4wd electric vehicle with open platform - Google Patents

4wd electric vehicle with open platform Download PDF

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Publication number
KR20200032383A
KR20200032383A KR1020180111328A KR20180111328A KR20200032383A KR 20200032383 A KR20200032383 A KR 20200032383A KR 1020180111328 A KR1020180111328 A KR 1020180111328A KR 20180111328 A KR20180111328 A KR 20180111328A KR 20200032383 A KR20200032383 A KR 20200032383A
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South Korea
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wheel motor
open platform
electric vehicle
driving
rear wheel
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KR1020180111328A
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Korean (ko)
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최미경
김형수
옥정욱
김오복
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대경보스텍 주식회사
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Priority to KR1020180111328A priority Critical patent/KR20200032383A/en
Publication of KR20200032383A publication Critical patent/KR20200032383A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/90—Electric propulsion with power supplied within the vehicle using propulsion power supplied by specific means not covered by groups B60L50/10 - B60L50/50, e.g. by direct conversion of thermal nuclear energy into electricity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/423—Torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2260/00—Operating Modes
    • B60L2260/20—Drive modes; Transition between modes
    • B60L2260/28—Four wheel or all wheel drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/82—Four wheel drive systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

The present invention relates to a four-wheeled electric vehicle applied with an open platform, which is applied with an open platform capable of varying the length of a wheel base to produce various kinds of products in a single production line, and controls operations of front and rear wheels in accordance with a driving state to provide excellent driving efficiency. The four-wheeled electric vehicle applied with an open platform of the present invention comprises: a vehicle body; a battery mounted on the vehicle body; a front wheel motor for receiving electricity from the battery to drive a front wheel; a rear wheel motor for receiving electricity from the battery to drive a rear wheel; and a driving control unit for controlling operations of the front and rear wheel motors. The vehicle body is applied with an open platform capable of varying the length of a wheel base to produce various kinds of products in a single production line.

Description

개방형 플랫폼이 적용된 사륜구동 전기자동차{4WD ELECTRIC VEHICLE WITH OPEN PLATFORM}Four-wheel drive electric vehicle with open platform {4WD ELECTRIC VEHICLE WITH OPEN PLATFORM}

본 발명은 개방형 플랫폼이 적용된 사륜구동 전기자동차에 관한 것으로, 보다 상세하게는 휠베이스 길이의 가변이 가능한 개방형 플랫폼이 적용되어 단일의 생산라인에서 다품종의 생산이 가능하고, 주행상태에 따라 전륜 및 후륜의 작동을 제어하여 주행효율이 우수한 개방형 플랫폼이 적용된 사륜구동 전기자동차에 관한 것이다.The present invention relates to a four-wheel drive electric vehicle to which an open platform is applied, and more specifically, an open platform capable of varying the length of the wheel base is applied to enable production of multiple types in a single production line, and the front and rear wheels according to driving conditions. It relates to a four-wheel drive electric vehicle is applied to the open platform with excellent driving efficiency by controlling the operation of.

전기자동차는 배터리에 저장된 전기에너지를 동력원으로 사용할 수 있는 자동차이다.An electric vehicle is a vehicle that can use electric energy stored in a battery as a power source.

전기자동차는 매연이 없고, 소음이 적으며, 차체가 가볍다는 장점이 있다.Electric vehicles have the advantages of no fumes, low noise, and light body.

통상적인 전기자동차는 전륜 또는 후륜 구동을 채택하여 구동력이 약하다는 문제점이 있었다.Conventional electric vehicles have a problem in that the driving force is weak by adopting front or rear wheel driving.

이에 종래기술로 등록특허공보 제10-0254421호(2000.05.01. 공고)에는 전륜과 후륜을 모두 구동할 수 있는 "전기 자동차용 4륜 구동장치"가 제안된 바 있다.Accordingly, in the prior art, Patent Registration No. 10-0254421 (2000.05.01. Announcement) has proposed a "four-wheel drive device for electric vehicles" capable of driving both the front and rear wheels.

상기 종래기술에 따른 전기 자동차용 4륜 구동장치는 바퀴의 회전을 감지하는 휠 센서와; 자동차의 속도를 감지하는 차속 센서와; 동력을 공급하는 배터리와; 상기한 배터리의 출력을 온 또는 오프하는 온/오프 스위치와, 상기한 휠 센서와 상기한 차속 센서의 출력을 입력받으며, 제어 신호를 출력하는 제어부와; 상기한 배터리의 동력을 상기한 온/오프 스위치를 통해 입력받고 상기한 제어부로부터 구동 신호를 입력받는 모터와; 상기한 모터에 의해 구동되며, 자동차가 커브길을 회전시 좌우바퀴가 원활하게 회전하도록 하는 차동장치를 포함하여 이루어지는 것을 특징으로 한다.The four-wheel drive device for an electric vehicle according to the prior art is a wheel sensor for detecting the rotation of the wheel; A vehicle speed sensor that senses a vehicle speed; A battery that supplies power; An on / off switch for turning on or off the output of the battery, a control unit for receiving the outputs of the wheel sensor and the vehicle speed sensor, and outputting a control signal; A motor receiving the power of the battery through the on / off switch and receiving a driving signal from the controller; It is driven by the above-described motor, and is characterized in that it comprises a differential device that enables the left and right wheels to rotate smoothly when the vehicle rotates the curved road.

하지만, 종래기술은 단일의 생산라인에서 하나의 품종만이 생산할 수 있는 한계가 있었고, 상기 종래기술에 따른 전기 자동차용 4륜 구동장치는 차량의 다양한 주행상태에 따라 전륜 또는 후륜 모터의 작동을 효율적을 제어할 수 없는 단점이 있었다. However, the prior art has a limitation that only one variety can be produced on a single production line, and the four-wheel drive device for an electric vehicle according to the prior art can efficiently operate the front or rear wheel motor according to various driving conditions of the vehicle. There was a disadvantage that can not be controlled.

본 발명은 상기와 같은 종래기술의 문제점을 해결하기 위하여 안출된 것으로, 본 발명의 목적은 단일의 생산라인에서 다품종의 생산이 가능하고, 주행효율이 우수한 개방형 플랫폼이 적용된 사륜구동 전기자동차를 제공하는 데에 있다.The present invention has been devised to solve the problems of the prior art as described above, and an object of the present invention is to provide a four-wheel drive electric vehicle that is capable of producing multiple types in a single production line and has an open platform with excellent driving efficiency. Is in

상기와 같은 목적을 달성하기 위하여 본 발명에 따른 개방형 플랫폼이 적용된 사륜구동 전기자동차는 전기자동차에 있어서, 차체와; 상기 차체에 장착되는 배터리와; 상기 배터리로부터 전기를 공급받아 앞바퀴를 구동하는 전륜모터와; 상기 배터리로부터 전기를 공급받아 뒷바퀴를 구동하는 후륜모터와; 상기 전륜모터와 상기 후륜모터의 작동을 제어하는 구동제어부를; 포함하되, 상기 차체는, 단일의 생산라인에서 다품종의 생산이 가능하도록 휠베이스 길이의 가변이 가능한 개방형 플랫폼이 적용된 것을 특징으로 하는 개방형 플랫폼이 적용된 것을 특징으로 한다.In order to achieve the above object, a four-wheel drive electric vehicle to which the open platform according to the present invention is applied is an electric vehicle, comprising: a body; A battery mounted on the vehicle body; A front wheel motor that receives electricity from the battery to drive the front wheel; A rear wheel motor that receives electricity from the battery and drives a rear wheel; A drive control unit for controlling the operation of the front wheel motor and the rear wheel motor; Including, the vehicle body is characterized in that an open platform is applied, characterized in that an open platform variable in length of the wheel base is applied to enable production of multiple types in a single production line.

여기서, 상기 배터리는, 무게중심을 고려하여 차체의 중앙부에 배치되는 것을 특징으로 한다.Here, the battery is characterized in that it is disposed in the center of the vehicle body in consideration of the center of gravity.

또한, 본 발명에 따른 개방형 플랫폼이 적용된 사륜구동 전기자동차는 앞바퀴 또는 뒷바퀴의 회전력을 이용하여 상기 배터리에 전기를 충전할 수 있는 발전기와; 차량의 주행상태를 감지할 수 있는 주행상태감지부를; 더 포함하되, 상기 구동제어부는, 상기 주행상태감지부에 내리막이 감지되는 경우 상기 전륜모터 및 상기 후륜모터의 작동을 정지시키고, 상기 발전기를 작동시키는 것을 특징으로 한다.In addition, a four-wheel drive electric vehicle to which the open platform according to the present invention is applied includes a generator capable of charging electricity to the battery using the rotational force of the front wheel or the rear wheel; A driving state detecting unit capable of detecting a driving state of the vehicle; In addition, the drive control unit, when the downhill is detected in the driving state detection unit is characterized in that to stop the operation of the front wheel motor and the rear wheel motor, and to operate the generator.

여기서, 상기 전륜모터는 상기 후륜모터에 비해 용량 및 토크는 높고, 회전수는 낮게 형성된 것을 특징으로 한다.Here, the front wheel motor is characterized in that the capacity and torque are higher and the rotation speed is lower than that of the rear wheel motor.

여기서, 상기 주행상태감지부는, 차량의 주행상태를 기동, 오르막, 일반(저속), 논밭, 눈길, 빗길, 일반(고속), 내리막, 일반(과적) 상태로 구분하여 감지하고, 상기 구동제어부는, 상기 주행상태감지부에 기동, 오르막, 논밭, 눈길, 빗길, 일반(과적) 주행상태가 감지되는 경우에는 상기 전륜모터 및 상기 후륜모터를 동시에 작동시키고, 상기 주행상태감지부에 일반(저속) 주행상태가 감지되는 경우 상기 전륜모터를 작동시키고 상기 후륜모터의 작동은 정지시키며, 상기 주행상태감지부에 일반(고속) 주행상태가 감지되는 경우 상기 전륜모터는 정지시키고 상기 후륜모터를 작동시키는 것을 특징으로 한다.Here, the driving state detection unit detects the driving state of the vehicle by dividing it into a start, uphill, normal (low speed), paddy field, snowy road, rain, normal (high speed), downhill, normal (overload) state, and the driving control unit , When the driving, the uphill, paddy field, snow, rain, and general (overload) driving conditions are detected, the front wheel motor and the rear wheel motor are operated at the same time, and the general (low speed) is applied to the driving condition sensing unit. When the driving state is detected, the front wheel motor is operated, the operation of the rear wheel motor is stopped, and when the normal (high speed) driving state is detected in the driving state sensing unit, the front wheel motor is stopped and the rear wheel motor is operated. It is characterized by.

상기와 같은 구성에 의하여 본 발명에 따른 개방형 플랫폼이 적용된 사륜구동 전기자동차는 휠베이스 길이의 가변이 가능한 개방형 플랫폼이 적용되어 단일의 생산라인에서 다품종의 생산이 가능하고, 주행상태에 따라 전륜 및 후륜의 작동을 제어하여 초기 구동시 저전력 구동이 가능하고, 정속 주행구간 진입이 빠르며, 효율이 우수한 구간의 선별 사용이 가능하여 주행효율이 우수한 장점이 있다.The four-wheel drive electric vehicle to which the open platform according to the present invention is applied by the above-described configuration is applied to the open platform capable of varying the length of the wheel base, so that a variety of products can be produced in a single production line, and the front and rear wheels according to driving conditions. By controlling the operation of the low-power driving is possible during the initial driving, the entry into the constant-speed driving section is fast, and it is possible to selectively use the section with high efficiency, and thus has excellent driving efficiency.

도 1은 본 발명의 일실시예에 따른 개방형 플랫폼이 적용된 사륜구동 전기자동차의 구성도
도 2는 본 발명의 일실시예에 따른 개방형 플랫폼이 적용된 사륜구동 전기자동차의 평면도
도 3은 본 발명의 일실시예에 따른 개방형 플랫폼이 적용된 사륜구동 전기자동차의 측면도
도 4는 본 발명의 일실시예에 따른 가변형 플랫폼의 적용 예시도
도 5는 본 발명의 일실시예에 따른 주행상태감지부의 감지 상태 및 그에 따른 구동제어부의 제어 방식을 도시한 개념도
도 6은 단일구동, 다중구동 전륜, 다중구동 후륜 및 본 발명에 다른 사륜구동 전기자동차의 성능 비교 그래프
도 7은 단일구동, 일반 사륜구동 및 본 발명에 따른 사륜구동 전기자동차의 전력소모량을 비교한 그래프
도 8은 싱글모터, 엔진 및 본 발명에 따른 사륜구동 전기자동차의 토크를 비교한 그래프
도 9는 본 발명의 일실시예에 따른 개방형 플랫폼이 적용된 사륜구동 전기자동차의 속도 대비 효율을 비교한 그래프
도 10은 이륜구동과 본 발명에 따른 사륜구동 전기자동차의 정속 주행을 비교한 그래프1 is a configuration diagram of a four-wheel drive electric vehicle with an open platform according to an embodiment of the present invention
2 is a plan view of a four-wheel drive electric vehicle with an open platform according to an embodiment of the present invention
Figure 3 is a side view of a four-wheel drive electric vehicle with an open platform according to an embodiment of the present invention
4 is an application example of a variable platform according to an embodiment of the present invention
5 is a conceptual diagram showing a sensing state of a driving state detection unit and a control method of the driving control unit according to one embodiment of the present invention
Figure 6 is a single-drive, multi-drive front wheel, multi-drive rear wheel and the performance comparison graph of the four-wheel drive electric vehicle according to the present invention
7 is a graph comparing the power consumption of a single drive, a general four-wheel drive and a four-wheel drive electric vehicle according to the present invention
8 is a graph comparing torque of a single motor, an engine, and a four-wheel drive electric vehicle according to the present invention
9 is a graph comparing the efficiency of the speed of the four-wheel drive electric vehicle is applied to the open platform according to an embodiment of the present invention
10 is a graph comparing two-wheel drive and constant speed driving of a four-wheel drive electric vehicle according to the present invention

이하에서는 도면에 도시된 실시예를 참조하여 본 발명에 따른 개방형 플랫폼이 적용된 사륜구동 전기자동차를 보다 상세하게 설명하기로 한다.Hereinafter, a four-wheel drive electric vehicle to which the open platform according to the present invention is applied will be described in more detail with reference to the embodiment shown in the drawings.

도 1은 본 발명의 일실시예에 따른 개방형 플랫폼이 적용된 사륜구동 전기자동차의 구성도이과, 도 2는 본 발명의 일실시예에 따른 개방형 플랫폼이 적용된 사륜구동 전기자동차의 평면도이며, 도 3은 본 발명의 일실시예에 따른 개방형 플랫폼이 적용된 사륜구동 전기자동차의 측면도이고, 도 4는 본 발명의 일실시예에 따른 가변형 플랫폼의 적용 예시도이다.1 is a configuration diagram of a four-wheel drive electric vehicle with an open platform according to an embodiment of the present invention and FIG. 2 is a plan view of a four-wheel drive electric vehicle with an open platform according to an embodiment of the present invention, and FIG. A side view of a four-wheel drive electric vehicle to which an open platform according to an embodiment of the present invention is applied, and FIG. 4 is an example of application of a variable platform according to an embodiment of the present invention.

도 1 내지 도 4를 살펴보면, 본 발명의 일실시예에 따른 개방형 플랫폼이 적용된 사륜구동 전기자동차는 차체(10)와, 배터리(20)와, 전륜모터(30)와, 후륜모터(40)와, 발전기(50)와, 주행상태감지부(60)와, 구동제어부(70)를 포함하여 구성된다.1 to 4, a four-wheel drive electric vehicle with an open platform according to an embodiment of the present invention includes a body 10, a battery 20, a front wheel motor 30, a rear wheel motor 40, and , A generator 50, a driving state detection unit 60, and a driving control unit 70.

상기 차체(10)는 본 발명의 일실시예에 따른 개방형 플랫폼이 적용된 사륜구동 전기자동차의 뼈대가 되는 구성으로 본 발명의 일실시예에서는 도 4에 도시된 바와 같이 휠베이스(11) 길이의 가변이 가능한 개방형 플랫폼이 적용된다.The vehicle body 10 is configured to be a skeleton of a four-wheel drive electric vehicle to which an open platform according to an embodiment of the present invention is applied. In one embodiment of the present invention, the wheelbase 11 is variable in length as shown in FIG. 4. This possible open platform is applied.

즉, 본 발명에 따른 개방형 플랫폼이 적용된 사륜구동 전기자동차는 휠 베이스(11)의 길이의 가변이 가능한 개방형 플랫폼이 적용되어 단일의 생산라인에서 다품종의 생산이 가능하게 된다.That is, in the four-wheel drive electric vehicle to which the open platform according to the present invention is applied, an open platform capable of varying the length of the wheel base 11 is applied to enable production of multiple products in a single production line.

한편, 본 발명에 따른 개방형 플랫폼이 적용된 사륜구동 전기자동차는 상기 차체(10)의 길이가 길어지는 경우라도 최소 회전 반경을 가질 수 있도록 전, 후륜 동시 조향이 가능한 4WS(4 Wheel Steering) 조향 시스템을 채택하는 것이 바람직하다.On the other hand, a four-wheel drive electric vehicle with an open platform according to the present invention has a 4WS (4 Wheel Steering) steering system capable of simultaneous front and rear wheel steering so that the vehicle body 10 has a minimum turning radius even when the length of the vehicle body 10 is increased. It is desirable to adopt.

상기 배터리(20)는 본 발명에 따른 개방형 플랫폼이 적용된 사륜구동 전기자동차의 동력원으로서 상기 차체(10)에 장착되는데, 본 발명의 일실시예에서는 무게중심을 고려하여 상기 차체(10)의 중앙부에 배치된다.The battery 20 is mounted on the vehicle body 10 as a power source of a four-wheel drive electric vehicle to which the open platform according to the present invention is applied. In one embodiment of the present invention, the center of the vehicle body 10 is considered in consideration of the center of gravity. Is placed.

상기 전륜모터(30)는 상기 배터리(20)로부터 전기를 공급받아 앞바퀴(31)를 구동하는 구성이고, 상기 후륜모터(40)는 상기 배터리(20)로부터 전기를 공급받아 뒷바퀴(41)를 구동하는 구성이다.The front wheel motor 30 is configured to drive the front wheel 31 by receiving electricity from the battery 20, and the rear wheel motor 40 drives the rear wheel 41 by receiving electricity from the battery 20. It is a configuration.

본 발명의 일실시예에서 상기 전륜모터(30)는 상기 후륜모터(40)에 비해 용량 및 토크는 높고, 회전수는 낮게 형성된 것을 특징으로 한다.In one embodiment of the present invention, the front wheel motor 30 is characterized in that the capacity and torque are higher and the rotation speed is lower than that of the rear wheel motor 40.

예를 들면, 본 발명의 일실시에에서는 상기 전륜모터(30)는 5:1의 기어와 5Kw의 구동모터를 장착하고, 후방에는 10:1의 기어와 10Kw의 구동모터를 장착하게 된다.For example, in one embodiment of the present invention, the front wheel motor 30 is equipped with a 5: 1 gear and a 5Kw drive motor, and a rear 10: 1 gear and a 10Kw drive motor are mounted on the rear side.

상기 발전기(50)는 앞바퀴(31) 또는 뒷바퀴(41)의 회전력을 이용하여 상기 배터리(20)에 전기를 충전하는 구성이다.The generator 50 is configured to charge electricity to the battery 20 using the rotational force of the front wheel 31 or the rear wheel 41.

본 발명의 일실시예에서는 상기 발전기(50)는 주행상태가 내리막 상태에서 동작하도록 구성되는데 이에 대한 상세한 설명은 후술하기로 한다.In one embodiment of the present invention, the generator 50 is configured to operate in a downhill state, and a detailed description thereof will be described later.

상기 주행상태감지부(60)는 차속, 부하, 노면 상태 등을 통해 차량의 주행상태를 감지하는 구성으로 본 발명의 일실시예에서는 도 5에 도시된 바와 같이 차량의 주행상태를 기동, 오르막, 일반(저속), 논밭, 눈길, 빗길, 일반(고속), 내리막, 일반(과적) 상태로 구분하여 감지하도록 구성된다.The driving state detection unit 60 is configured to detect the driving state of the vehicle through a vehicle speed, a load, a road surface state, etc. In one embodiment of the present invention, the driving state of the vehicle is started, ascended, It is configured to be classified into general (slow), paddy field, snowy, rainy, normal (high speed), downhill, and normal (overload) conditions.

상기 구동제어부(70)는 상기 전륜모터(30)와, 상기 후륜모터(40) 및 상기 발전기(50)의 작동을 제어하는 구성이다.The drive control unit 70 is configured to control the operation of the front wheel motor 30, the rear wheel motor 40 and the generator 50.

본 발명의 일실시예에서 상기 구동제어부(70)는 상기 주행상태감지부(60)에 내리막이 감지되는 경우 상기 전륜모터(30) 및 상기 후륜모터(40)의 작동을 정지시키고, 상기 발전기(50)를 작동시키도록 구성된다.In one embodiment of the present invention, the drive control unit 70 stops the operation of the front wheel motor 30 and the rear wheel motor 40 when a downhill is detected by the driving state detection unit 60, and the generator ( 50).

또한, 본 발명의 일실시예에선 상기 구동제어부(70)는 상기 주행상태감지부(60)에 기동, 오르막, 논밭, 눈길, 빗길, 일반(과적) 주행상태가 감지되는 경우에는 상기 전륜모터(30) 및 상기 후륜모터(40)를 동시에 작동(사륜구동)시키고, 상기 주행상태감지부(60)에 일반(저속) 주행상태가 감지되는 경우 상기 전륜모터(30)를 작동시키고 상기 후륜모터(40)의 작동은 정지(전륜구동)시키며, 상기 주행상태감지부(60)에 일반(고속) 주행상태가 감지되는 경우 상기 전륜모터(30)는 정지시키고 상기 후륜모터(40)를 작동(후륜구동)시키도록 구성된다.In addition, in one embodiment of the present invention, the drive control unit 70 is the driving state detection unit 60 when the start, ascent, paddy field, snow, rain, general (overload) driving state is detected, the front wheel motor ( 30) and the rear wheel motor 40 is operated at the same time (four-wheel drive), and when the normal (low speed) driving condition is detected by the driving state detecting unit 60, the front wheel motor 30 is operated and the rear wheel motor ( The operation of 40) is stopped (front-wheel drive), and when the normal (high-speed) driving condition is detected by the driving state detecting unit 60, the front-wheel motor 30 is stopped and the rear-wheel motor 40 is operated (after Wheel drive).

본 발명에 따른 사륜구동 전기자동차는 접지력이 높아 타이어의 슬립현상이 낮기 때문에 기존의 시스템에 비해 효율이 50%이상 상승하는 효과가 있다.The four-wheel drive electric vehicle according to the present invention has an effect of increasing the efficiency by 50% or more compared to the existing system because the slip force of the tire is low due to the high gripping force.

또한, 상기 주행상태감지부(60)에서 주행상태를 일반(저속)과 일반(고속)으로 구분하여 감지하고 상기 구동제어부(70)가 저속과 고속의 영역을 분리하여 영역에 맞는 상기 전륜모터(30) 또는 상기 후륜모터(40)의 구동이 가능하므로 전체 전력 사용량을 낮추며 장시간 주행이 가능하게 된다. In addition, the driving state detection unit 60 detects the driving state by dividing it into a normal (low speed) and a normal (high speed), and the driving control unit 70 separates the low-speed and high-speed areas to match the front wheel motor ( 30) Alternatively, since the rear wheel motor 40 can be driven, it is possible to drive for a long time while reducing the total power consumption.

도 6은 단일구동, 다중구동 전륜, 다중구동 후륜 및 본 발명에 따른 사륜구동 전기자동차(E-4WD)의 성능 비교 그래프이다.6 is a performance comparison graph of a single-drive, multi-drive front wheel, multi-drive rear wheel, and a four-wheel drive electric vehicle (E-4WD) according to the present invention.

도 6을 살펴보면, 본 발명의 일실시예에 따른 개방형 플랫폼이 적용된 사륜구동 전기자동차(E-4WD)는 변속기어는 없지만 엔진과 동일한 성능의 구현이 가능하고, 10Kw 독립모터를 사용할 때보다 에너지 사용 효율이 상승되며, 초기 구동시 저전력 구동이 가능하고, 정속 주행 구간 진입이 빠르며, 효율이 우수한 구간 선별 사용이 가능함을 확인할 수 있다.Referring to FIG. 6, a four-wheel drive electric vehicle (E-4WD) with an open platform according to an embodiment of the present invention does not have a transmission gear, but can realize the same performance as an engine, and uses energy more efficiently than using a 10Kw independent motor. It can be seen that this is increased, low-power driving is possible during initial driving, fast entry into the constant-speed driving section is possible, and the use of a section with high efficiency is possible.

도 7은 단일구동(Single Drive), 일반 사륜구동(4WD) 및 본 발명에 따른 사륜구동 전기자동차(E-4WD)의 전력소모량을 비교한 그래프이다.7 is a graph comparing power consumption of a single drive, a general four-wheel drive (4WD), and a four-wheel drive electric vehicle (E-4WD) according to the present invention.

도 7을 살펴보면, 기존의 단일구동(Single Drive)과 본 발명에 다른 사륜구동 전기자동차(E-4WD)의 전류를 비교할 시 최대(Max) 전류가 140[A] vs 110[A]으로 본 발명에 따른 사륜구동 전기자동차(E-4WD)의 최대 전류가 더 작음을 확인할 수 있다.Looking at Figure 7, when comparing the current of the existing single drive (Single Drive) and the current of the four-wheel drive electric vehicle (E-4WD) in accordance with the present invention, the maximum current is 140 [A] vs 110 [A]. It can be seen that the maximum current of the four-wheel drive electric vehicle (E-4WD) is smaller.

또한, 일반 사륜구동(4WD)과 본 발명에 따른 사륜구동 전기자동차(E-4WD)의 소모전력을 비교하면 1.5kW vs 0.7kW로 본 발명에 따른 사륜구동 전기자동차(E-4WD)의 소모전력이 더 작음을 확인할 수 있다.In addition, comparing the power consumption of a general four-wheel drive (4WD) and a four-wheel drive electric vehicle (E-4WD) according to the present invention is 1.5kW vs 0.7kW, which consumes power of a four-wheel drive electric vehicle (E-4WD) according to the present invention. You can see that this is smaller.

도 8은 싱글모터(Single motor), 엔진(Engine) 및 본 발명에 따른 사륜구동 전기자동차(E-4WD)의 토크를 비교한 그래프이다.8 is a graph comparing torque of a single motor, an engine, and a four-wheel drive electric vehicle (E-4WD) according to the present invention.

도 8을 살펴보면, 통상은 엔진(Engine)과 같은 토크곡선이 가장 이상적인데, 현재의 전기자동차는 싱글모터(Single motor)처럼 동작하는게 일반적이고, 싱글모터(Single motor)의 경우 엔진(Engine)과 비교했을 때 A면적만큼 전력손실이 발생하게 된다.Referring to FIG. 8, a torque curve such as an engine is usually ideal, and current electric vehicles generally operate like a single motor, and in the case of a single motor, an engine and When compared, power loss is generated as much as A area.

그러나, 본 발명에 따른 사륜구동 전기자동차(E-4WD)는 상기 전륜모터(30)와 상기 후륜모터(40) 이렇게 두 대의 모터를 제어하면 엔진(Engine)과 같은 토크곡선을 얻을 수 있기 때문에 기어변속기능과 함께 에너지 소비도 줄일 수 있는 장점이 발생된다.However, in the four-wheel drive electric vehicle (E-4WD) according to the present invention, if the two motors such as the front wheel motor 30 and the rear wheel motor 40 are controlled, a torque curve such as an engine can be obtained. Along with the shifting function, an advantage of reducing energy consumption occurs.

도 9는 본 발명의 일실시예에 따른 개방형 플랫폼이 적용된 사륜구동 전기자동차(E-4WD)의 속도 대비 효율을 비교한 그래프이다.9 is a graph comparing the efficiency of the speed of the four-wheel drive electric vehicle (E-4WD) is applied to the open platform according to an embodiment of the present invention.

도 9를 살펴보면, 상기 전륜모터(30)로만 구동되면 효율이 좋은 구간으로 빨리 도달하지만 속도유지 시간이 짧다. Referring to FIG. 9, when only the front wheel motor 30 is driven, it quickly reaches a section with high efficiency, but the speed maintenance time is short.

반면 상기 후륜모터(40)는 속도유지는 좋지만 효율이 좋은 구간으로 가는데 시간이 오래 걸리기 때문에 에너지 손실이 많아지는 단점이 있다.On the other hand, the rear wheel motor 40 has a disadvantage in that the speed maintenance is good, but the energy loss is increased because it takes a long time to go to the efficient section.

그러나 본 발명에 따른 사륜구동 전기자동차(E-4WD)는 각각의 모터(30, 40)의 효율이 좋은 구간만을 사용할 수 있도록 제어가 가능하기 때문에 두 모터(30, 40)의 장점을 연결하여 사용함으로써 효율을 높일 수 있게 되는 것이다.However, since the four-wheel drive electric vehicle (E-4WD) according to the present invention can be controlled so that only the sections with high efficiency of each motor 30 and 40 can be used, the advantages of the two motors 30 and 40 are connected and used. By doing so, it is possible to increase the efficiency.

도 10은 이륜구동(2WD)과 본 발명에 따른 사륜구동 전기자동차(E-4WD)의 정속 주행을 비교한 그래프이다.10 is a graph comparing two-wheel drive (2WD) and constant-speed driving of a four-wheel drive electric vehicle (E-4WD) according to the present invention.

도 10을 살펴보면, 이륜구동(2WD)의 경우 초기구동 시 전력(Power) 사용시간이 본 발명에 따른 사륜구동 전기자동차(E-4WD)보다 길어지는 것을 볼 수 있고 정속 속도에 도달하는 시간도 본 발명에 따른 사륜구동 전기자동차(E-4WD)보다 길어지는 것을 볼 수 있다.Referring to FIG. 10, in the case of two-wheel drive (2WD), it can be seen that the power usage time during initial driving is longer than that of the four-wheel drive electric vehicle (E-4WD) according to the present invention, and the time to reach a constant speed is also seen. It can be seen that it is longer than the four-wheel drive electric vehicle (E-4WD) according to the invention.

따라서, 본 발명에 따른 사륜구동 전기자동차(E-4WD)가 기존의 방법보다 전력사용량은 낮으면서 정격속도에 도달하는 시간이 짧아 에너지 소비가 상대적으로 작은 것을 확인할 수 있다.Therefore, it can be seen that the four-wheel drive electric vehicle (E-4WD) according to the present invention has a lower power consumption and a shorter time to reach the rated speed than the conventional method, so that energy consumption is relatively small.

이는 본 발명에 따른 사륜구동 전기자동차(E-4WD)가 높은 토크가 필요한 초기 구동시 사륜으로 동작하고, 정속으로 가면서 전륜으로만 구동하는 기술을 적용하였기 때문이라고 할 수 있다.This can be said to be because the four-wheel drive electric vehicle (E-4WD) according to the present invention uses a technique of operating as a four-wheel at the time of initial driving requiring high torque, and driving only at the front wheel while going at constant speed.

앞에서 설명되고 도면에서 도시된 개방형 플랫폼이 적용된 사륜구동 전기자동차는 본 발명을 실시하기 위한 하나의 실시예에 불과하며, 본 발명의 기술적 사상을 한정하는 것으로 해석되어서는 안된다. 본 발명의 보호범위는 이하의 특허청구범위에 기재된 사항에 의해서만 정하여지며, 본 발명의 요지를 벗어남이 없이 개량 및 변경된 실시예는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 자명한 것인 한 본 발명의 보호범위에 속한다고 할 것이다.The four-wheel drive electric vehicle to which the open platform described above and illustrated in the drawings is applied is only one embodiment for carrying out the present invention and should not be interpreted as limiting the technical spirit of the present invention. The protection scope of the present invention is defined only by the matters described in the following claims, and the improved and modified embodiments without departing from the gist of the present invention are obvious to those skilled in the art to which the present invention pertains. It will be said that it belongs to the protection scope of the present invention.

10 차체
20 배터리
30 전륜모터
40 후륜모터
50 발전기
60 주행상태감지부
70 구동제어부10 Body
20 batteries
30 front wheel motor
40 rear motor
50 generator
60 Driving condition detection unit
70 Drive Control

Claims (5)

전기자동차에 있어서,
차체와;
상기 차체에 장착되는 배터리와;
상기 배터리로부터 전기를 공급받아 앞바퀴를 구동하는 전륜모터와;
상기 배터리로부터 전기를 공급받아 뒷바퀴를 구동하는 후륜모터와;
상기 전륜모터와 상기 후륜모터의 작동을 제어하는 구동제어부를; 포함하되,
상기 차체는, 단일의 생산라인에서 다품종의 생산이 가능하도록 휠베이스 길이의 가변이 가능한 개방형 플랫폼이 적용된 것을 특징으로 하는 개방형 플랫폼이 적용된 사륜구동 전기자동차.In electric vehicles,
A body;
A battery mounted on the vehicle body;
A front wheel motor that receives electricity from the battery to drive the front wheel;
A rear wheel motor that receives electricity from the battery and drives a rear wheel;
A drive control unit for controlling the operation of the front wheel motor and the rear wheel motor; Including,
The vehicle body is a four-wheel drive electric vehicle with an open platform, characterized in that an open platform with variable wheelbase length is applied to enable production of multiple types on a single production line. 제1항에 있어서,
상기 배터리는, 무게중심을 고려하여 차체의 중앙부에 배치되는 것을 특징으로 하는 개방형 플랫폼이 적용된 사륜구동 전기자동차.According to claim 1,
The battery is a four-wheel drive electric vehicle with an open platform, characterized in that disposed in the center of the vehicle body in consideration of the center of gravity. 제1항 또는 제2항에 있어서,
앞바퀴 또는 뒷바퀴의 회전력을 이용하여 상기 배터리에 전기를 충전할 수 있는 발전기와;
차량의 주행상태를 감지할 수 있는 주행상태감지부를; 더 포함하되,
상기 구동제어부는, 상기 주행상태감지부에 내리막이 감지되는 경우 상기 전륜모터 및 상기 후륜모터의 작동을 정지시키고, 상기 발전기를 작동시키는 것을 특징으로 하는 개방형 플랫폼이 적용된 사륜구동 전기자동차.The method according to claim 1 or 2,
A generator capable of charging electricity to the battery using the rotational force of the front wheel or the rear wheel;
A driving state detecting unit capable of detecting a driving state of the vehicle; Including more,
The driving control unit, the four-wheel drive electric vehicle is applied to the open platform, characterized in that to stop the operation of the front wheel motor and the rear wheel motor, when the downhill is detected in the driving state detection unit, and operates the generator. 제3항에 있어서,
상기 전륜모터는 상기 후륜모터에 비해 용량 및 토크는 높고, 회전수는 낮게 형성된 것을 특징으로 하는 개방형 플랫폼이 적용된 사륜구동 전기자동차.According to claim 3,
The front wheel motor has a higher capacity and torque than the rear wheel motor, and a four-wheel drive electric vehicle with an open platform, characterized in that the rotation speed is formed low. 제4항에 있어서,
상기 주행상태감지부는, 차량의 주행상태를 기동, 오르막, 일반(저속), 논밭, 눈길, 빗길, 일반(고속), 내리막, 일반(과적) 상태로 구분하여 감지하고,
상기 구동제어부는, 상기 주행상태감지부에 기동, 오르막, 논밭, 눈길, 빗길, 일반(과적) 주행상태가 감지되는 경우에는 상기 전륜모터 및 상기 후륜모터를 동시에 작동시키고, 상기 주행상태감지부에 일반(저속) 주행상태가 감지되는 경우 상기 전륜모터를 작동시키고 상기 후륜모터의 작동은 정지시키며, 상기 주행상태감지부에 일반(고속) 주행상태가 감지되는 경우 상기 전륜모터는 정지시키고 상기 후륜모터를 작동시키는 것을 특징으로 하는 개방형 플랫폼이 적용된 사륜구동 전기자동차.According to claim 4,
The driving state detection unit detects the driving state of the vehicle by dividing it into a start, uphill, normal (low speed), paddy field, snowy road, rain, normal (high speed), downhill, normal (overload) state,
When the driving control unit detects a driving, uphill, paddy field, snowy road, rain, or general (overload) driving condition, the driving state detecting unit simultaneously operates the front wheel motor and the rear wheel motor, and the driving state sensing unit When a normal (low speed) driving condition is detected, the front wheel motor is operated, and the operation of the rear wheel motor is stopped. When a normal (high speed) driving condition is detected in the driving state detecting unit, the front wheel motor is stopped and the rear wheel motor is stopped. Four-wheel drive electric vehicle with an open platform, characterized in that to operate.
KR1020180111328A 2018-09-18 2018-09-18 4wd electric vehicle with open platform KR20200032383A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116278796A (en) * 2023-03-13 2023-06-23 广州雷利诺车业有限公司 Intelligent running control system and control method for off-highway sightseeing trolley

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116278796A (en) * 2023-03-13 2023-06-23 广州雷利诺车业有限公司 Intelligent running control system and control method for off-highway sightseeing trolley

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