KR20200126135A - Mileage increase method by using load control of electric vehicle - Google Patents

Mileage increase method by using load control of electric vehicle Download PDF

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KR20200126135A
KR20200126135A KR1020190049718A KR20190049718A KR20200126135A KR 20200126135 A KR20200126135 A KR 20200126135A KR 1020190049718 A KR1020190049718 A KR 1020190049718A KR 20190049718 A KR20190049718 A KR 20190049718A KR 20200126135 A KR20200126135 A KR 20200126135A
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load
mileage
driving distance
vehicle
electric vehicle
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KR1020190049718A
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Korean (ko)
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최용상
남일규
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쌍용자동차 주식회사
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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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0092—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption with use of redundant elements for safety purposes
    • 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
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • 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
    • B60L2240/421—Speed
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/547—Voltage
    • 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
    • B60L2250/00—Driver interactions
    • B60L2250/10—Driver interactions by alarm
    • 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
    • B60L2260/40—Control modes
    • B60L2260/50—Control modes by future state prediction
    • B60L2260/52—Control modes by future state prediction drive range estimation, e.g. of estimation of available travel distance
    • 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
    • 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
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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

Abstract

The present invention relates to a mileage increasing method using a load control of an electric vehicle capable of calculating a distance to being fully discharged after comprehensive consideration of information such as the driver′s driving state, load state, and road environment while the vehicle is driving to increase the distance to being fully discharged through load control if a driver selects a mileage increase mode when the distance to being fully discharged is rapidly decreasing. The present invention provides a mileage increasing method using load control of the electric vehicle comprising: a step of detecting a vehicle load and the state of charge (SOC) of a battery with a vehicle control unit controlling the entire operation of the electric vehicle estimates the distance to being fully discharged; a step of turning on a warning light through a cluster if the estimated distance to being fully discharged is a warning limit value or less; a step of limiting the load when a switch for the emergency mileage increase mode is turned on after the warning light is turned on so as to increase the mileage; and a step of re-estimating the distance to being fully discharged after limiting the load and then turning off the lighted warning light when the re-estimated distance to empty is the warning limit value or greater.

Description

전기 자동차의 부하제어를 이용한 주행거리 증대방법{Mileage increase method by using load control of electric vehicle}Mileage increase method by using load control of electric vehicle

본 발명은 전기 자동차의 부하제어를 이용한 주행거리 증대방법에 관한 것으로, 특히 차량 주행 중 사용자의 운전 상태, 부하상태, 도로 환경 등의 정보를 종합적으로 고려하여 주행 가능 거리를 계산하고, 주행가능 거리가 급격히 줄어드는 상태에서 운전자가 주행거리 연장 모드를 선택하면 부하 제어를 통해 주행 가능 거리를 연장할 수 있도록 한 전기 자동차의 부하제어를 이용한 주행거리 증대방법에 관한 것이다.The present invention relates to a method for increasing a mileage using load control of an electric vehicle, and in particular, calculates a driable distance by comprehensively considering information such as a user's driving state, load state, and road environment while driving a vehicle, and The present invention relates to a method of increasing the mileage using load control of an electric vehicle, in which, when the driver selects the mileage extension mode in a state where is rapidly reduced, the available distance can be extended through load control.

근래의 전기 차량은 구조적 크게 순수 전기차(Pure EV), Hybrid 개념인 Range Extender 전기차(REEV), 그리고 Fuel Cell을 적용한 수소 전기차(FCEV)로 분류할 수 있다. 예컨대, 파워 소스(Power Source)를 순수하게 배터리로만 공급받을 것인지(EV), 부가적인 발전기를 적용하여 배터리와 발전기로부터 공급받을 것인지(REEV), Fuel-Cell Stack System을 적용하여 스택(Stack)으로부터 공급받을 것인지(FCEV)로 나눌 수 있다. 순수 전기차(Pure EV)는 기본적으로 REEV나 FCEV 보다 상대적으로 고용량의 배터리 시스템(Battery System)을 적용하지 않으면 만족할만한 주행거리를 달성할 수 없다. 즉, 배터리 자체의 에너지(Energy) 밀도의 한계적인 기술을 인정하지 않으면 안되는 실정이다.Modern electric vehicles can be structurally classified into pure electric vehicles (Pure EV), hybrid concept range extender electric vehicles (REEV), and hydrogen electric vehicles (FCEV) using fuel cells. For example, whether the power source will be supplied purely by battery (EV), whether it will be supplied from the battery and generator by applying an additional generator (REEV), or from the stack by applying the Fuel-Cell Stack System. It can be divided into whether to receive supply (FCEV). Pure EVs cannot achieve a satisfactory mileage unless a battery system with a relatively higher capacity than REEV or FCEV is applied. In other words, it is necessary to acknowledge the limiting technology of the energy density of the battery itself.

이하 전기차는 상기 순수 전기차, 주행거리 확장형 전기차, 수소 전기차 등을 통칭하는 개념이다.Hereinafter, the electric vehicle is a concept collectively referred to as the pure electric vehicle, a mileage extended electric vehicle, and a hydrogen electric vehicle.

일반적인 전기차는 배터리의 충전량을 기반으로 주행거리를 계산하여 이를 운전자에게 알려주고, 주행거리가 일정 거리 이하로 낮아지면 운전자에게 경고를 한다. 전기차에서 주행거리 확장을 위해, 회생제동모드라는 주행모드를 이용하여 주행거리를 증대하기도 한다.A typical electric vehicle calculates the mileage based on the amount of charge of the battery, informs the driver, and warns the driver when the mileage falls below a certain distance. In order to extend the mileage in electric vehicles, the mileage is also increased by using a driving mode called regenerative braking mode.

주행거리 확장을 위해 종래에 제안된 전기차에 대한 기술이 <특허문헌 1> 에 개시되어 있다.A technique for an electric vehicle that has been proposed in the prior art for extending the mileage is disclosed in <Patent Document 1>.

<특허문헌 1> 에 개시된 종래기술은 복합 에너지 소스, 복합 에너지 소스를 통해 생성된 에너지를 저장 및 변환하는 에너지 저장수단 및 상기 에너지 저장수단에서 출력되는 에너지 또는 변환된 전력을 저장하고, 저장한 에너지를 이용하여 전력을 생산하며, 상기 변환된 전력 또는 생산한 전력을 인-휠 모터에 직접 인가하여 동력전달 손실을 최소화하는 파워 트레인 시스템(power train system)을 포함하여, 주행거리 확장형 전기차 시스템을 구현한다.The prior art disclosed in <Patent Document 1> is a composite energy source, an energy storage means for storing and converting energy generated through the composite energy source, and energy output from the energy storage means or converted power, and stored energy. Implementing an electric vehicle system for extending the mileage, including a power train system that generates power using and minimizes power transmission loss by directly applying the converted power or the generated power to the in-wheel motor. do.

이러한 구성을 통해, 차량별로 독립적인 파워 소스(power source)를 융합 혹은 분리하여 배터리에 공급하도록 하고, 동력을 별도의 동력전달장치(예를 들어, 트랜스미션, 구동모터)를 이용하지 않고 인-휠 모터(In-Wheel Motor)에 직접 인가하여 구동 효율을 극대화하여 주행거리를 확장한다.Through this configuration, independent power sources are fused or separated for each vehicle to be supplied to the battery, and power is supplied to the battery without using a separate power transmission device (e.g., transmission, drive motor). It is applied directly to the motor (In-Wheel Motor) to maximize driving efficiency and extend the driving distance.

대한민국 등록특허 10-1853803(2018.04.25. 등록)(주행거리 확장형 전기차 시스템)Korean Patent Registration 10-1853803 (Registered on April 25, 2018) (Extended mileage electric vehicle system)

그러나 상기와 같은 일반적인 전기차 및 종래기술은 주행 가능 거리를 계산하여 운전자에게 알려 주고, 일정 거리 이하로 낮아질 경우 운전자에게 경고를 해주는 단순한 방식으로서, 운전자의 운전상태 및 도로환경(Up/Down) 등에 따라 주행 가능 거리가 급격히 줄어들 경우에는 운전자가 대처할 수 없는 상황을 초래하는 단점이 있다.However, the general electric vehicle and the prior art as described above are a simple method of calculating the driving distance and notifying the driver, and giving a warning to the driver when it falls below a certain distance, depending on the driver's driving condition and road environment (Up/Down). If the driving distance is drastically reduced, there is a drawback of causing a situation that the driver cannot cope with.

따라서 본 발명은 상기와 같은 종래기술에서 발생하는 제반 문제점을 해결하기 위해서 제안된 것으로서, 차량 주행 중 사용자의 운전 상태, 부하상태, 도로 환경 등의 정보를 종합적으로 고려하여 주행 가능 거리를 계산하고, 주행가능 거리가 급격히 줄어드는 상태에서 운전자가 주행거리 연장 모드를 선택하면 부하 제어를 통해 주행 가능 거리를 연장할 수 있도록 한 전기 자동차의 부하제어를 이용한 주행거리 증대방법을 제공하는 데 그 목적이 있다.Accordingly, the present invention has been proposed to solve the problems occurring in the prior art as described above, and calculates the driving distance by comprehensively considering information such as the driving state, load state, and road environment of the user while driving the vehicle, An object of the present invention is to provide a method of increasing the mileage using load control of an electric vehicle in which the mileage extension mode can be extended through load control when the driver selects the mileage extension mode in a state where the mileage is rapidly reduced.

상기한 바와 같은 목적을 달성하기 위하여, 본 발명에 따른 "전기 자동차의 부하제어를 이용한 주행거리 증대방법"은, (a) 전기 자동차의 전체 동작을 제어하는 차량 제어부에서 차량 부하 및 배터리 잔여용량(SOC)을 검출하여 주행가능거리를 예측하는 단계; (b) 상기 차량 제어부에서 예측한 주행가능거리가 경고 한계치 이하이면 클러스터를 통해 경고등을 점등시켜주는 단계; (c) 상기 차량 제어부에서 경고등 점등 후 긴급 주행거리연장 모드 스위치가 온 상태로 조작되면 부하를 제한하여 주행거리를 연장하는 단계; (d) 상기 차량 제어부에서 부하 제한 후 주행가능거리를 재예측하고, 재예측한 주행가능거리가 상기 경고 한계치보다 크면 점등시킨 경고등을 오프하는 단계를 포함하는 것을 특징으로 한다.In order to achieve the above object, the "method for increasing mileage using load control of an electric vehicle" according to the present invention includes (a) vehicle load and battery residual capacity in a vehicle controller that controls the entire operation of an electric vehicle ( Predicting an available driving distance by detecting SOC); (b) turning on a warning light through a cluster when the driving distance predicted by the vehicle control unit is less than or equal to the warning threshold; (c) extending the driving distance by limiting the load when the emergency driving distance extension mode switch is operated in the ON state after the warning light is turned on in the vehicle control unit; (d) the vehicle control unit re-predicting the driving distance after limiting the load, and turning off the lighted warning lamp when the re-predicted driving distance is greater than the warning threshold.

상기에서 (a)단계는 고전압 부하, 고전압 배터리 잔여 용량, 저전압 부하, 저전압 배터리 용량을 기초로 주행가능거리를 예측하는 것을 특징으로 한다.In the above step (a), it is characterized in that the driving distance is predicted based on the high voltage load, the high voltage battery remaining capacity, the low voltage load, and the low voltage battery capacity.

상기에서 (c)단계는 고전압 부하 오프, 공조장치 오프, 바디 부하 오프, 배터리 충전동작 중지, 모터 토크 제한을 통해 주행거리를 연장하는 것을 특징으로 한다.In the above step (c), the driving distance is extended by turning off the high voltage load, turning off the air conditioner, turning off the body load, stopping the battery charging operation, and limiting the motor torque.

상기에서 (c)단계의 모터 토크 제한은 전기 모터의 최고 효율 구간 안에서만 동작하도록 속도 및 토크를 제한하는 것을 특징으로 한다.In the above, the motor torque limit in step (c) is characterized in that the speed and torque are limited so as to operate only within the maximum efficiency range of the electric motor.

본 발명에 따르면 차량 주행 중 사용자의 운전 상태, 부하상태, 도로 환경 등의 정보를 종합적으로 고려하여 주행 가능 거리를 계산하고, 주행가능 거리가 급격히 줄어드는 상태에서 운전자가 긴급 주행거리 연장모드를 선택하면 부하 제어를 통해 주행 가능 거리를 연장하여, 주행가능거리가 급격히 줄어드는 경우에도 운전자가 이에 대비할 수 있도록 도모해주는 효과가 있다.According to the present invention, if the driving distance is calculated by comprehensively considering information such as the user's driving status, load condition, and road environment while driving the vehicle, and the driver selects the emergency driving distance extension mode while the driving distance is rapidly reduced By extending the driving distance through the load control, there is an effect that the driver can prepare for this even when the driving distance is rapidly reduced.

도 1은 본 발명에 따른 전기 자동차의 부하제어를 이용한 주행거리 증대방법이 적용되는 전기 자동차 시스템 구성도,
도 2는 본 발명에 따른 전기 자동차의 부하제어를 이용한 주행거리 증대방법을 보인 흐름도이다.1 is a configuration diagram of an electric vehicle system to which a method for increasing a mileage using a load control of an electric vehicle according to the present invention is applied;
2 is a flowchart showing a method of increasing a driving distance using load control of an electric vehicle according to the present invention.

이하 본 발명의 바람직한 실시 예에 따른 전기 자동차의 부하제어를 이용한 주행거리 증대방법을 첨부된 도면을 참조하여 상세하게 설명한다.Hereinafter, a method of increasing a mileage using load control of an electric vehicle according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 바람직한 실시 예에 따른 전기 자동차의 부하제어를 이용한 주행거리 증대방법이 적용되는 전기 자동차 시스템의 개략 구성도로서, 배터리를 관리하는 배터리 관리 시스템(BMS)(101), 저전압 부하 검출부(102), 12V 부하 및 배터리 상태 신호를 입력받기 위한 배터리 센서 케이블(103), 운전자가 급격하게 주행거리가 감소되는 경우 긴급 주행거리 연장을 요청하는 긴급 주행거리 연장모드 스위치(104), 주행거리 계산과 주행거리 경고등 점등 및 소등, 주행거리 연장을 위한 부하 제어 등을 수행하는 차량 제어부(105)를 포함한다.1 is a schematic configuration diagram of an electric vehicle system to which a method for increasing mileage using load control of an electric vehicle according to a preferred embodiment of the present invention is applied, a battery management system (BMS) 101 for managing a battery, and a low voltage load The detection unit 102, a battery sensor cable 103 for receiving 12V load and battery status signals, an emergency mileage extension mode switch 104 for requesting an emergency mileage extension when the mileage is rapidly reduced by the driver, driving It includes a vehicle control unit 105 that performs distance calculation, turning on and off a mileage warning light, and controlling a load for extending a mileage.

또한, 본 발명이 적용되는 전기 자동차 시스템은 상기 차량 제어부(105)의 제어에 따라 견인 전동기(106)를 동작시키는 견인 전동기 구동부(107), 상기 차량 제어부(105)의 제어에 따라 동작하는 압축기(108), 상기 차량 제어부(105)의 제어에 따라 동작하는 배터리 히터(109), 상기 차량 제어부(105)의 제어에 따라 공조 장치인 히터(111)와 에어컨(112)과 블로워(113)를 제어하는 공조 제어부(110), 상기 차량 제어부(105)의 제어에 따라 바디 부하인 시트 워머(121)와 휠 워머(122)를 제어하는 바디 제어부(120), 상기 차량 제어부(105)의 제어에 따라 경고등(131)을 점등 또는 소등시키는 클러스터(130), 상기 차량 제어부(105)의 제어에 따라 12V 배터리(141)를 충전시키는 직류/직류 컨버터(140)를 포함한다.In addition, the electric vehicle system to which the present invention is applied includes a traction motor driving unit 107 that operates the traction motor 106 under control of the vehicle control unit 105, and a compressor that operates under control of the vehicle control unit 105 ( 108), the battery heater 109 operating under the control of the vehicle control unit 105, and control the heater 111, the air conditioner 112, and the blower 113, which are air conditioning units, according to the control of the vehicle control unit 105 The body control unit 120 that controls the seat warmer 121 and the wheel warmer 122, which are body loads, according to the control of the air conditioning control unit 110, the vehicle control unit 105, and the vehicle control unit 105 It includes a cluster 130 for turning on or off the warning light 131, and a DC/DC converter 140 for charging the 12V battery 141 under the control of the vehicle controller 105.

도 2는 본 발명에 따른 전기 자동차의 부하제어를 이용한 주행거리 증대방법을 보인 흐름도로서, (a) 전기 자동차의 전체 동작을 제어하는 차량 제어부(105)에서 차량 부하 및 배터리 잔여용량(SOC)을 검출하여 주행가능거리를 예측하는 단계(S101 - S102), (b) 상기 차량 제어부(105)에서 예측한 주행가능거리가 경고 한계치 이하이면 클러스터(130)를 통해 경고등을 점등시켜주는 단계(S103 - S104), (c) 상기 차량 제어부(105)에서 경고등 점등 후 긴급 주행거리연장 모드 스위치가 온(on) 상태로 조작되면 부하를 제한하여 주행거리를 연장하는 단계(S105 - S110), (d) 상기 차량 제어부(105)에서 부하 제한 후 주행가능거리를 재예측하고, 재예측한 주행가능거리가 상기 경고 한계치보다 크면 점등시킨 경고등을 오프하는 단계(S111 - S113)를 포함한다.2 is a flow chart showing a method of increasing a mileage using load control of an electric vehicle according to the present invention. (a) Vehicle load and battery residual capacity (SOC) are calculated by the vehicle controller 105 that controls the entire operation of the electric vehicle. Steps of detecting and predicting the available driving distance (S101-S102), (b) turning on the warning light through the cluster 130 when the driving distance predicted by the vehicle control unit 105 is less than the warning limit value (S103- S104), (c) step of extending the mileage by limiting the load when the emergency mileage extension mode switch is operated in the on state after the warning light is turned on in the vehicle control unit 105 (S105-S110), (d) The vehicle control unit 105 re-predicts the driving distance after the load is limited, and turns off the lighted warning lamp when the re-predicted driving distance is greater than the warning threshold value (S111 to S113).

상기 (a)단계는 고전압 부하, 고전압 배터리 잔여 용량(SOC), 저전압 부하, 저전압 배터리 용량을 기초로 주행가능거리를 예측하며, 상기 (c)단계는 고전압 부하 오프, 공조장치 오프, 바디 부하 오프, 배터리 충전동작 중지, 모터 토크 제한을 통해 주행거리를 연장한다.The step (a) predicts the driving distance based on the high voltage load, the high voltage battery remaining capacity (SOC), the low voltage load, and the low voltage battery capacity, and the step (c) is the high voltage load off, the air conditioner off, and the body load off. , Battery charging operation is stopped, and motor torque is limited to extend the mileage.

이와 같이 구성된 본 발명에 따른 전기 자동차의 부하제어를 이용한 주행거리 증대방법을 구체적으로 설명하면 다음과 같다.A method of increasing the mileage using the load control of an electric vehicle according to the present invention configured as described above will be described in detail as follows.

먼저, 본 발명은 전기 자동차 주행 중 사용자의 운전 상태, 부하상태, 도로환경 등에 의한 주행가능 거리를 계산하고, 주행가능거리가 급격히 줄어 운전자가 긴급 주행거리 연장모드를 요청하면, 특정 고전압 부하 및 저전압 부하의 동작을 줄인다. 동시에 저전압 배터리를 충전하는 저전압 DC/DC 컨버터를 오프하여 12V 배터리의 잔여용량을 일정량 이하까지 줄인다. 아울러 견인 전동기(106)를 최대 효율 구간 내에서만 작동하도록 속도/토크를 제한하여 주행가능거리를 연장하여, 긴급 상황에 대하여 운전자가 대처하고, 운전자의 안전을 도모한다.First, the present invention calculates the driving distance due to the user's driving state, load state, road environment, etc. while driving the electric vehicle, and when the driver requests the emergency driving distance extension mode because the driving distance is rapidly reduced, a specific high voltage load and low voltage Reduce the operation of the load. At the same time, the low voltage DC/DC converter that charges the low voltage battery is turned off to reduce the remaining capacity of the 12V battery to a certain amount or less. In addition, the driving distance is extended by limiting the speed/torque so that the traction motor 106 operates only within the maximum efficiency range, so that the driver responds to an emergency situation and promotes the driver's safety.

예컨대, 전기 자동차의 주행이 시작되면, 차량 제어부(105)는 단계 S101 및 S102와 같이 차량 부하 및 배터리 잔여용량(SOC)을 검출하여 주행가능거리를 예측한다. 여기서 차량 부하는 고전압 부하, 저전압 부하를 포함하며, 배터리 잔여 용량은 고전압 배터리 잔여용량 및 저전압 배터리 잔여 용량을 포함한다. 여기서 주행가능거리 예측은 기존 전기 자동차에서 수행하는 주행가능 거리 계산 방식을 그대로 채택하여 수행할 수 있다.For example, when the driving of the electric vehicle starts, the vehicle control unit 105 predicts the available driving distance by detecting the vehicle load and the remaining battery capacity (SOC) as in steps S101 and S102. Here, the vehicle load includes a high voltage load and a low voltage load, and the battery residual capacity includes a high voltage battery residual capacity and a low voltage battery residual capacity. Here, the driable distance prediction may be performed by adopting the driable distance calculation method performed by the existing electric vehicle as it is.

다음으로, 단계 S103에서 상기 차량 제어부(105)는 예측한 주행가능거리와 경고 한계치를 비교한다. 여기서 경고 한계치는 도로 환경(언덕), 운전자의 주행 상태(고속), 부하 상태에 따라 급격히 주행가능거리가 감소하는 것을 판단하기 위해 미리 설정된 기준 값이다. 상기 예측한 주행가능거리와 경고 한계치를 비교한 결과, 상기 예측한 주행가능거리가 상기 경고 한계치 이하이면 단계 S104로 이동하여 클러스터(130)를 통해 경고등(131)을 점등시켜 운전자에게 해당 상황을 경고해준다. 여기서 경고는 클러스터를 이용하여 수행하는 것도 가능하고, 차량에 기본적으로 구비된 오디오장치(오디오/비디오 장치, 오디오/비디오/내비게이션 장치)를 이용하여 시청각으로 경고하는 것도 가능하다.Next, in step S103, the vehicle control unit 105 compares the predicted driving distance and the warning threshold. Here, the warning threshold is a preset reference value in order to determine that the driving distance is rapidly decreased depending on the road environment (hill), the driving state of the driver (high speed), and the load state. As a result of comparing the predicted driving distance and the warning limit value, if the predicted driving distance is less than the warning limit value, the process moves to step S104 and the warning light 131 is turned on through the cluster 130 to warn the driver of the situation. Do. Here, the warning may be performed using a cluster, and an audio/visual warning may be performed using an audio device (audio/video device, audio/video/navigation device) basically provided in the vehicle.

이러한 경고를 인지한 사용자가 긴급하게 주행가능거리를 연장하기 위해서 긴급 주행거리 연장모드 스위치(104)를 온(on) 상태로 조작하면(S105), 상기 차량 제어부(105)는 단계 S106 내지 S110에서 부하를 제한하여 주행거리를 연장한다.When the user who recognizes this warning operates the emergency mileage extension mode switch 104 in an on state (S105) in order to urgently extend the available mileage, the vehicle control unit 105 is in steps S106 to S110. Limit the load to extend the mileage.

예컨대, 단계 S106과 같이 압축기(108)와 배터리 히터(109)와 같은 고전압 부하를 오프시키고, 단계 S107과 같이 공조 제어부(111)를 제어하여 히터(111)와 에어컨(112)과 블로워(113)와 같은 공조 장치를 오프시킨다. 아울러 단계 S108과 같이 바디 제어부(120)를 제어하여 시트 워머(121)와 휠 워머(122)와 같은 바디 부하를 오프시키고, 단계 S109와 같이 직류/직류 컨버터(130)를 오프시켜 12V 배터리의 충전을 중지시켜 소모 전력을 줄인다. 또한, 단계 S110과 같이 전기 모터인 견인 전동기(106)를 최고효율 구간 안에서만 동작하도록 견인 전동기 구동부(107)를 제어하여 속도 및 토크를 제한한다. 이러한 과정을 통해 주행가능거리를 연장한다.For example, high voltage loads such as the compressor 108 and the battery heater 109 are turned off as in step S106, and the air conditioning control unit 111 is controlled as in step S107 to control the heater 111, the air conditioner 112 and the blower 113. Turn off the air conditioning equipment such as. In addition, as in step S108, the body control unit 120 is controlled to turn off body loads such as the seat warmer 121 and the wheel warmer 122, and the DC/DC converter 130 is turned off as in step S109 to charge the 12V battery. To reduce power consumption. In addition, as in step S110, the speed and torque are limited by controlling the traction motor driving unit 107 so that the traction motor 106, which is an electric motor, operates only within the maximum efficiency section. Through this process, the driving distance is extended.

다음으로, 상기 차량 제어부(105)는 상기와 같은 과정을 통해 부하를 제한한 후, 단계 S111로 이동하여 상기와 같은 방식으로 주행가능거리를 재예측한다.Next, after limiting the load through the process as described above, the vehicle control unit 105 moves to step S111 and re-predicts the available driving distance in the same manner as described above.

이어, 단계 S112로 이동하여 상기 재예측한 주행가능거리와 상기 경고 한계치를 다시 비교하여, 상기 재예측한 주행가능거리가 상기 경고 한계치보다 크면 단계 S113으로 이동하여 점등시킨 경고등을 오프하여, 운전자에게 주행가능거리가 연장되었음을 알린다.Subsequently, the process moves to step S112 and compares the re-predicted driving distance and the warning limit value again, and when the re-predicted driving distance is greater than the warning limit value, the warning light goes to step S113 to turn off, and the driver Informs that the driving distance has been extended.

이와 같이 본 발명은 전기 자동차 주행 중 사용자의 운전 상태, 부하상태, 도로환경 등에 의한 주행가능 거리를 계산하고, 주행가능거리가 급격히 줄어 운전자가 긴급 주행거리연장 모드를 요청하면, 특정 고전압 부하 및 저전압 부하의 동작을 줄인다. 동시에 저전압 배터리를 충전하는 저전압 DC/DC 컨버터를 오프하여 12V 배터리의 잔여용량을 일정량 이하까지 줄인다. 아울러 전기 모터를 최대 효율 구간 내에서만 작동하도록 속도/토크를 제한하여 주행가능거리를 연장하여, 긴급 상황에 대하여 운전자가 대처하고, 운전자의 안전을 도모한다.As described above, the present invention calculates the driving distance due to the user's driving state, load state, road environment, etc. while driving the electric vehicle, and when the driver requests the emergency mileage extension mode due to a sharp decrease in the driving distance, a specific high voltage load and low voltage Reduce the operation of the load. At the same time, the low voltage DC/DC converter that charges the low voltage battery is turned off to reduce the remaining capacity of the 12V battery to a certain amount or less. In addition, the driving distance is extended by limiting the speed/torque so that the electric motor operates only within the maximum efficiency section, so that the driver responds to an emergency situation and promotes the driver's safety.

이상 본 발명자에 의해서 이루어진 발명을 상기 실시 예에 따라 구체적으로 설명하였지만, 본 발명은 상기 실시 예에 한정되는 것은 아니고 그 요지를 이탈하지 않는 범위에서 여러 가지로 변경 가능한 것은 이 기술분야에서 통상의 지식을 가진 자에게 자명하다.Although the invention made by the present inventor has been described in detail according to the above embodiment, the present invention is not limited to the above embodiment, and it is common knowledge in the art that various changes can be made without departing from the gist of the invention. It is self-evident to those who have

101: 배터리 관리 시스템 102: 저전압 부하 검출부
103: 배터리 센서 케이블 104: 긴급 주행거리연장 모드 스위치
105: 차량 제어부 106: 견인 전동기
107: 견인 전동기 구동부 108: 압축기
109: 배터리 히터 110: 공조 제어부
111: 히터 112: 에어컨
113: 블로워 120: 바디 제어부
121: 시트 워머 122: 휠 워머
130: 클러스터 131: 경고등
140: DC/DC 컨버터 141: 12V 배터리101: battery management system 102: low voltage load detection unit
103: battery sensor cable 104: emergency mileage extension mode switch
105: vehicle control unit 106: traction motor
107: traction motor drive unit 108: compressor
109: battery heater 110: air conditioning control unit
111: heater 112: air conditioner
113: blower 120: body control unit
121: seat warmer 122: wheel warmer
130: cluster 131: warning light
140: DC/DC converter 141: 12V battery

Claims (4)

전기 자동차의 부하제어를 통해 주행거리를 연장하기 위한 방법으로서,
(a) 전기 자동차의 전체 동작을 제어하는 차량 제어부에서 차량 부하 및 배터리 잔여용량(SOC)을 검출하여 주행가능거리를 예측하는 단계;
(b) 상기 차량 제어부에서 예측한 주행가능거리가 경고 한계치 이하이면 클러스터를 통해 경고등을 점등시켜주는 단계;
(c) 상기 차량 제어부에서 경고등 점등 후 긴급 주행거리연장 모드 스위치가 온 상태로 조작되면 부하를 제한하여 주행거리를 연장하는 단계; 및
(d) 상기 차량 제어부에서 부하 제한 후 주행가능거리를 재예측하고, 재예측한 주행가능거리가 상기 경고 한계치보다 크면 점등시킨 경고등을 오프하는 단계를 포함하는 것을 특징으로 하는 전기 자동차의 부하제어를 이용한 주행거리 증대방법.
As a method for extending the mileage through load control of an electric vehicle,
(a) predicting an available driving distance by detecting a vehicle load and a remaining battery capacity (SOC) in a vehicle controller that controls the entire operation of the electric vehicle;
(b) turning on a warning light through a cluster when the driving distance predicted by the vehicle control unit is less than or equal to the warning threshold;
(c) extending the driving distance by limiting the load when the emergency mileage extension mode switch is operated in the ON state after the warning light is turned on in the vehicle control unit; And
(d) the vehicle control unit re-predicting the driving distance after limiting the load, and turning off the lighted warning lamp when the re-predicted driving distance is greater than the warning limit value. How to increase the mileage used.
 청구항 1에서, 상기 (a)단계는 고전압 부하, 고전압 배터리 잔여 용량, 저전압 부하, 저전압 배터리 용량을 기초로 주행가능거리를 예측하는 것을 특징으로 하는 전기 자동차의 부하제어를 이용한 주행거리 증대방법.
The method of claim 1, wherein the step (a) predicts a driving distance based on a high voltage load, a high voltage battery remaining capacity, a low voltage load, and a low voltage battery capacity.
 청구항 1에서, 상기 (c)단계는 고전압 부하 오프, 공조장치 오프, 바디 부하 오프, 배터리 충전동작 중지, 모터 토크 제한을 통해 주행거리를 연장하는 것을 특징으로 하는 전기 자동차의 부하제어를 이용한 주행거리 증대방법.
In claim 1, wherein step (c) is a driving distance using load control of an electric vehicle, characterized in that the high voltage load is off, the air conditioner is off, the body load is off, the battery charging operation is stopped, and the driving distance is extended by limiting the motor torque. Augmentation method.
 청구항 3에서, 상기 모터 토크 제한은 전기 모터의 최고효율 구간 안에서만 동작하도록 속도 및 토크를 제한하는 것을 특징으로 하는 전기 자동차의 부하제어를 이용한 주행거리 증대방법.







The method of claim 3, wherein the motor torque limit limits speed and torque so as to operate only within a maximum efficiency section of the electric motor.
KR1020190049718A 2019-04-29 2019-04-29 Mileage increase method by using load control of electric vehicle KR20200126135A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116853015A (en) * 2023-09-05 2023-10-10 合肥开关厂有限公司 Automatic power supply control method, system and storage medium based on artificial intelligence
EP4328081A1 (en) * 2022-08-26 2024-02-28 Scania CV AB Method and control arrangement for setting a remaining distance to empty parameter in an electric vehicle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101853803B1 (en) 2016-05-31 2018-05-03 쌍용자동차 주식회사 Range extender electric vehicle system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101853803B1 (en) 2016-05-31 2018-05-03 쌍용자동차 주식회사 Range extender electric vehicle system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4328081A1 (en) * 2022-08-26 2024-02-28 Scania CV AB Method and control arrangement for setting a remaining distance to empty parameter in an electric vehicle
WO2024043815A1 (en) * 2022-08-26 2024-02-29 Scania Cv Ab Method and control arrangement for setting a remaining distance to empty parameter in an electric vehicle
CN116853015A (en) * 2023-09-05 2023-10-10 合肥开关厂有限公司 Automatic power supply control method, system and storage medium based on artificial intelligence
CN116853015B (en) * 2023-09-05 2023-11-21 合肥开关厂有限公司 Automatic power supply control method, system and storage medium based on artificial intelligence

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