KR0184799B1 - A power control apparatus of an electric vehicle - Google Patents
A power control apparatus of an electric vehicle Download PDFInfo
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- KR0184799B1 KR0184799B1 KR1019940026640A KR19940026640A KR0184799B1 KR 0184799 B1 KR0184799 B1 KR 0184799B1 KR 1019940026640 A KR1019940026640 A KR 1019940026640A KR 19940026640 A KR19940026640 A KR 19940026640A KR 0184799 B1 KR0184799 B1 KR 0184799B1
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- South Korea
- Prior art keywords
- power
- inverter circuit
- electric vehicle
- current
- magnetic switch
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- 239000003990 capacitor Substances 0.000 claims abstract description 13
- 230000008878 coupling Effects 0.000 claims abstract description 13
- 238000010168 coupling process Methods 0.000 claims abstract description 13
- 238000005859 coupling reaction Methods 0.000 claims abstract description 13
- 230000002159 abnormal effect Effects 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 230000002265 prevention Effects 0.000 claims description 5
- 238000013021 overheating Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
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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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/51—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by AC-motors
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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
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/003—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to inverters
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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
- B60L2270/00—Problem solutions or means not otherwise provided for
- B60L2270/20—Inrush current reduction, i.e. avoiding high currents when connecting the battery
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Inverter Devices (AREA)
Abstract
본 발명은 전기자동차의 전원 제어장치 및 그 방법에 관한 것으로, 특히 전기자동차의 초기시동시 모터를 제어하는 인버터회로에 과 돌입전류, 전압을 방지하는 전기자동차의 전원 제어장치 및 그 방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vehicle power supply control apparatus and method thereof, and more particularly to an electric vehicle power supply control apparatus and method for preventing over-rush current and voltage in an inverter circuit for controlling a motor at initial startup of the electric vehicle. .
이를 위하여 전기자동차에 직류전원을 공급하는 축전지, 상기 직류전원을 교류전원으로 변환하는 인버터회로, 상기 인버터회로의 초기 구동시 전류량의 급격한 변화에 대응하기 위한 결합콘덴서, 상기 변환된 교류전원에 의해 동력을 생성하는 구동모터, 키의 조작에 따라 전기자동차의 시동을 가능하게 하는 키뭉치를 구비한 전기자동차의 전원 제어장치에 있어서, 상기 축전지와 인버터회로사이에 접속되어 축전지의 전원을 구동모터에 공급하는 제2마그네틱스위치, 상기 제2마그네틱스위치와 병렬 접속되고 제1마그네틱스위치 및 저항으로 이루어져 상기 결합콘덴서에 유입되는 과 돌입전류를 방지하여 인버터회로에 인가되는 이상전류를 방지하는 돌입전류방지부, 상기 제1 및 제2 마그네틱스위치의 접점 상태를 제어하는 제1 및 제2릴레이, 상기 키뭉치의 접점 상태에 따라 상기 제1 및 제2마그네틱스위치를 선택적으로 동작시키는 제어부, 상기 인버터회로에 과열발생이나 과전압·전류, 저전류가 인가될 경우 상기 제어부에 인터럽트신호를 출력하는 이상 상태검출부로 이루어진 것이다.To this end, a battery for supplying DC power to an electric vehicle, an inverter circuit for converting the DC power to AC power, a coupling capacitor for responding to a sudden change in the amount of current during the initial driving of the inverter circuit, and the power of the converted AC power In a power control apparatus for an electric vehicle provided with a key motor for starting the electric vehicle according to the operation of the key, the drive motor for generating a key, connected between the battery and the inverter circuit to supply the power of the battery to the drive motor A second magnetic switch which is connected in parallel with the second magnetic switch and is formed of a first magnetic switch and a resistor to prevent an inrush current flowing into the coupling capacitor to prevent an abnormal current applied to the inverter circuit; First and second relays for controlling contact states of the first and second magnetic switches; A control unit for selectively operating the first and second magnetic switches according to the contact state of the bundle, and an abnormal state detection unit outputting an interrupt signal to the control unit when an overheat generation, an overvoltage, a current, or a low current is applied to the inverter circuit. It is done.
Description
제1도는 본 발명에 따른 전기자동차 전원 제어장치의 회로도.1 is a circuit diagram of an electric vehicle power control apparatus according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 축전지 2 : 인버터회로1: storage battery 2: inverter circuit
3 : 구동모터 4 : 키뭉치3: drive motor 4: key bundle
5 : 제어부 6 : 이상상태검출부5: control unit 6: abnormal state detection unit
7 : 돌입전류방지부 9 : 제1릴레이7: inrush current prevention unit 9: first relay
10 : 제2릴레이 11 : 결합콘덴서10: second relay 11: coupling capacitor
본 발명은 전기자동차의 전원 제어장치에 관한 것으로, 특히 전기자동차의 초기시동시 모터를 제어하는 인버터회로에 과 돌입전류, 전압을 방지하는 전기자동차의 전원 제어장치에 관한 것이다.The present invention relates to a power supply control apparatus for an electric vehicle, and more particularly, to a power control apparatus for an electric vehicle that prevents over-rush current and voltage in an inverter circuit for controlling a motor at initial startup of the electric vehicle.
일반적으로 전기자동차의 구동전원은 축전지에서 저장되는 직류전류를 이용하여 인버터회로를 동작하여 모터를 회전시킴으로서 이 회전력에 의하여 전기자동차를 주행시키는 방식이며, 이러한 전기자동차의 전원 제어장치에서는 초기시동시 인버터회로에 순간적인 돌입전압이 공급됨에 따라 부하에 따른 전류량의 급격한 변화에 대응하기 위하여 축전지와는 별도로 결합콘덴서를 장착하고 있다.In general, the driving power of an electric vehicle is to drive an electric vehicle by operating the inverter circuit using a direct current stored in a battery to rotate the motor. This power control device of the electric vehicle drives the inverter at initial startup. As the instantaneous inrush voltage is supplied to the circuit, a coupling capacitor is installed separately from the storage battery to cope with a sudden change in the amount of current according to the load.
그러나, 전기자동차의 초기 시동시에는 상기 결합콘덴서에 많은 양의 과 돌입전류, 전압이 순간적으로 인가되어 인버터회로에 내장되어 있는 전력 트랜지스터의 수명단축 및 주변 전기소자의 손상을 초래하게 되고, 이로 인하여 전기자동차의 정밀제어가 어렵게되는 문제점이 발생하게 된다.However, during the initial start-up of the electric vehicle, a large amount of over-rush current and voltage are instantaneously applied to the coupling capacitor, which shortens the lifespan of the power transistor embedded in the inverter circuit and damages the peripheral electric devices. The problem is that the precise control of the electric vehicle becomes difficult.
본 발명은 이러한 문제점을 해서하기 위해 보호회로를 채택하여 초기시동시 결합 콘덴서에 인가되는 과 돌입전류, 전압의 양을 감압하여 모터를 제어하는 인버터회로의 내부 전력트랜지스터의 수명증가 및 주변 전기소자의 손상을 방지하여 전기자동차의 전원 제어장치의 신뢰성을 향상시키고, 별도의 전기배선의 변경없이 기존의 자동차에 적용할 수 있도록 하는 전기자동차 전원 제어장치를 제공하는데 목적이 있는 것이다.In order to solve such a problem, the present invention adopts a protection circuit to increase the lifespan of an internal power transistor of an inverter circuit for controlling a motor by reducing the amount of over-rush current and voltage applied to a coupling capacitor during initial startup, and It is an object of the present invention to improve the reliability of the electric vehicle power control device by preventing damage, and to provide an electric vehicle power control device that can be applied to an existing vehicle without changing an electric wiring.
이와 같은 목적을 수행하기 위한 본 발명은, 전기자동차에 직류전원을 공급하는 축전지, 상기 직류전원을 교류전원으로 변환하는 인버터회로, 상기 인버터회로의 초기구동시 전류량의 급격한 변화에 대응하기 위한 결합 콘덴서, 상기 변환된 교류전원에 의해 동력을 생성하는 구동모터, 키의 조작에 따라 전기자동차의 시동을 가능하게 하는 키뭉치를 구비한 전기자동차의 전원 제어장치에 있어서, 상기 축전지와 인버터회로사이에 접속되어 축전지의 전원을 구동모터에 공급하는 제2마그네틱스위치, 상기 제2마그네틱스위치와 병렬 접속되고 제1마그네틱스위치 및 저항으로 이루어져 상기 결합콘덴서에 유입되는 과 돌입 전류를 방지하여 인버터회로에 인가되는 이상전류를 방지하는 돌입전류방지부, 상기 제1 및 제2 마그네틱스위치의 접점 상태를 제어하는 제1 및 제2릴레이, 상기 키뭉치의 접점 상태에 따라 상기 제1 및 제2마그네틱스위치를 선택적으로 동작시키는 제어부, 상기 인버터회로에 과열발생이나 과전압·전류, 저전류가 인가될 경우 상기 제어부에 인터럽트신호를 출력하는 이상 상태검출부로 이루어진 것이다.The present invention for performing the above object, the storage battery for supplying a DC power to an electric vehicle, the inverter circuit for converting the DC power to AC power, the coupling capacitor for responding to a sudden change in the amount of current during the initial drive of the inverter circuit A power control apparatus for an electric vehicle having a drive motor for generating power by the converted AC power and a key bundle for starting an electric vehicle in response to manipulation of a key, comprising: a connection between the storage battery and an inverter circuit A second magnetic switch for supplying power of a battery to a driving motor, the second magnetic switch is connected in parallel, and is composed of a first magnetic switch and a resistor to prevent an inrush current flowing into the coupling capacitor and to be applied to an inverter circuit. Inrush current prevention unit for preventing a current, the contact state of the first and second magnetic switch A control unit for selectively operating the first and second magnetic switches according to the first and second relays, the contact state of the key bundle, and when the overheating, overvoltage, current, or low current is applied to the inverter circuit. The abnormal state detection unit outputs an interrupt signal to the control unit.
이하 첨부된 도면에 의해 상세히 설명하면 다음과 같다.Hereinafter, described in detail by the accompanying drawings as follows.
제1도는 본 발명에 따른 전기자동차 전원 제어장치의 회로도로서, 전기자동차의 모든 장치에 구동전원을 공급하는 축전지(1)의 출력측에는 병렬 접속된 제1마그네틱스위치(MC2)와 돌입전류방지부(7)를 통해 구동모터(3)의 위상을 제어하는 인버터회로(2)에 접속되며, 제1 및 제2 마그네틱스위치(MC1)(MC2)일측에는 제1, 제2릴레이(9)(10)가 연결되어 있다1 is a circuit diagram of an electric vehicle power control apparatus according to the present invention, the first magnetic switch (MC2) and the inrush current prevention unit connected in parallel to the output side of the storage battery (1) for supplying driving power to all devices of the electric vehicle ( 7) is connected to the inverter circuit 2 for controlling the phase of the driving motor 3, and the first and second relays 9 and 10 on one side of the first and second magnetic switches MC1 and MC2. Is connected
또한 운전자의 키조작에 의해 접점이 변화되는 키뭉치(4)에는 키접점 변화에 따라 제1 및 제2 릴레이(9)(10)를 제어하는 제어부(5)가 접속되며, 전원공급부(6)에 의해 모든회로 및 장치에 소정전원을 공급토록 되어 있고, 인버터회로(2)의 입력측 양단에는 초기 구동시 모터(3)의 부하에 따른 전류량의 급격한 변화에 대응하기 위해 결합콘덴서(11)가 접속되며, 제어부(5)의 입력단에는 인버터회로(2)에 과열발생이나 과전압·전류, 저전류가 인가될 경우 인터럽트신호를 출력하는 이상상태검출부(6)가 연결되어 있다.In addition, a control unit 5 for controlling the first and second relays 9 and 10 according to the key contact change is connected to the key bundle 4 whose contact is changed by the driver's key operation, and the power supply unit 6 The predetermined power supply is supplied to all circuits and devices, and the coupling capacitor 11 is connected to both ends of the input side of the inverter circuit 2 in order to cope with a sudden change in the amount of current according to the load of the motor 3 during initial driving. An abnormal state detection unit 6 is connected to an input terminal of the control unit 5 to output an interrupt signal when an overheat generation, an overvoltage, a current, or a low current is applied to the inverter circuit 2.
이와 같이 구성되는 본 발명의 전기자동차 전원 제어장치의 상세한 동작을 제1도에 의해 설명하면 다음과 같다.The detailed operation of the electric vehicle power control apparatus of the present invention configured as described above will be described with reference to FIG. 1 as follows.
먼저 운전자가 전기자동차의 시동을 위하여 키뭉치(4)에 키를 삽입시켜 조작함으로서 키가 온 상태에 있을 경우, 제어부(5)에서는 초기 시동시에 인버터회로(2)의 결합콘덴서(C)에 과 돌입전류의 인가를 방지하기 위하여 제1릴레이(9)를 먼저 동작시켜 돌입전류방지부(7)의 제1마그네틱스위치(MC1)를 턴온상태로 접속시킴에 따라 축전지(1)의 전류는 제1마그네틱스위치(MC1)와 저항(R)에 의해 적정레벨로 감압된 후 인버터회로(2)로 인가됨으로서 인버터회로(2)에 인가되는 초기의 과전류·전압을 방지하게 된다.First, when the driver is in the ON state by inserting and operating a key into the key bundle 4 to start the electric vehicle, the controller 5 controls the coupling capacitor C of the inverter circuit 2 at the initial start-up. In order to prevent the application of the over-rush current, the first relay 9 is operated first to connect the first magnetic switch MC1 of the inrush current prevention unit 7 to the turned-on state. Since the pressure is reduced to an appropriate level by the one magnetic switch MC1 and the resistor R, it is applied to the inverter circuit 2 to prevent the initial overcurrent / voltage applied to the inverter circuit 2.
한편 운전자가 시동을 위해 키뭉치(4)에 삽입된 키를 조작하여 스타트(ST)위치에 접속될 경우 제어부(5)에서는 시동상태임을 인지함에 따라 제2릴레이(10)를 구동시키며, 이로 인해, 제2마그네틱스위치(MC2)를 턴온상태로 접속시키게 되어 축전지(1)의 전원이 제2마그네틱스위치(MC2)를 통해 인버터회로(2)에 공급됨으로서 모터(3)에 정상적인 구동전원이 인가되는 것이다.On the other hand, when the driver operates the key inserted in the key bundle 4 for starting, and is connected to the start (ST) position, the control unit 5 drives the second relay 10 in recognition of the starting state. The second magnetic switch MC2 is turned on so that the power of the battery 1 is supplied to the inverter circuit 2 through the second magnetic switch MC2 so that normal driving power is applied to the motor 3. will be.
그러므로 키의 초기조작시는 인버터회로(2)에 제1마그네틱 스위치(MC1)에 직렬로 연결된 저항(R)에 의해 제한된 전류가 인가되어 단시간에 정상 구동전압까지 유화된 즉, 부드러운 정상전류를 공급하고, 시동시에는 상기 저항(R)에 병렬로 제2마그네틱스위치(MC2)를 턴온시킴으로서 인버터회로(2)에 유입되는 전력의 손실을 방지한다. 한편 이상상태검출부(6)에서는 인버터회로(2)에 인가되는 전압·전류를 감지하여 과전압·전류 및 저전류가 인가되거나 과열이 감지될 경우 제어부(5)에 인터럽트신호를 출력하게 되며, 상기 제어부(5)에서는 인터럽트가 인가되면 인버터회로(2)에 이상상태가 발생하였음을 인지하여 제1 및 제2릴레이(9)(10)의 동작을 정지시킴에 따라 제1 및 제2마그네틱스위치(MC1)(MC2)를 오프시키게 되어 인버터회로(2)에 공급되는 축전지(1)의 전원을 차단함으로서 이상상태가 발생시 인버터회로(2)와 모터(3)를 보호하게 되는 것이다.Therefore, during the initial operation of the key, a limited current is applied to the inverter circuit 2 by a resistor R connected in series with the first magnetic switch MC1 to supply a smooth steady current, which is emulsified to a normal driving voltage in a short time. At the time of start-up, the second magnetic switch MC2 is turned on in parallel with the resistor R to prevent loss of power flowing into the inverter circuit 2. On the other hand, the abnormal state detection unit 6 detects the voltage and current applied to the inverter circuit 2, and outputs an interrupt signal to the control unit 5 when overvoltage, current and low current are applied or overheating is detected. In (5), when an interrupt is applied, the inverter circuit 2 recognizes that an abnormal state has occurred and stops the operation of the first and second relays 9 and 10, thereby stopping the first and second magnetic switches MC1. By turning off the MC2, the power supply of the storage battery 1 supplied to the inverter circuit 2 is cut off to protect the inverter circuit 2 and the motor 3 when an abnormal state occurs.
이상에서 상술한 바와 같이 본 발명은, 초기시동시 결합콘덴서 및 인버터회로에 인가되는 과돌입전류·전압의 양을 감압 공급함으로서 모터를 제어하는 인버터회로의 내부 전력트랜지스터의 수명증가 및 주변 전기소자의 손상을 방지하여 전기자동차의 전원 제어장치의 신뢰성을 향상시키고, 별도의 전기배선의 변경없이 기존의 자동차에 적용할 수 있는 것이다.As described above, the present invention provides an increase in the lifetime of the internal power transistor of the inverter circuit for controlling the motor by supplying the amount of over-rush current and voltage applied to the coupling capacitor and the inverter circuit at initial startup, It prevents damage and improves the reliability of the electric vehicle power control device, and can be applied to an existing vehicle without changing electric wiring.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940026640A KR0184799B1 (en) | 1994-10-18 | 1994-10-18 | A power control apparatus of an electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940026640A KR0184799B1 (en) | 1994-10-18 | 1994-10-18 | A power control apparatus of an electric vehicle |
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| Publication Number | Publication Date |
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| KR960013792A KR960013792A (en) | 1996-05-22 |
| KR0184799B1 true KR0184799B1 (en) | 1999-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1019940026640A KR0184799B1 (en) | 1994-10-18 | 1994-10-18 | A power control apparatus of an electric vehicle |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005008858A1 (en) * | 2003-07-16 | 2005-01-27 | Tyco Electronics Amp Korea Limited | Power controller for vehicle |
| KR20110037058A (en) * | 2009-10-05 | 2011-04-13 | 한국전자통신연구원 | The apparatus for power management |
| WO2013018972A1 (en) * | 2011-08-04 | 2013-02-07 | 주식회사 엘지화학 | Over-current protection device of secondary battery, protection method thereof, and battery pack thereof |
| US8582269B2 (en) | 2011-08-04 | 2013-11-12 | Lg Chem, Ltd. | Overcurrent protection apparatus for secondary battery, protection method and battery pack |
| KR101353953B1 (en) * | 2012-02-20 | 2014-01-23 | 계명대학교 산학협력단 | A relay device and drive control method for power supply of electrical vehicle its |
| US10020648B2 (en) | 2016-04-27 | 2018-07-10 | Lsis Co., Ltd. | Apparatus for detecting malfunction of relay |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100623743B1 (en) * | 2004-07-29 | 2006-09-19 | 현대자동차주식회사 | An open circuit voltage determination device of vehicle using 42 voltage power system and method thereof |
-
1994
- 1994-10-18 KR KR1019940026640A patent/KR0184799B1/en not_active IP Right Cessation
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005008858A1 (en) * | 2003-07-16 | 2005-01-27 | Tyco Electronics Amp Korea Limited | Power controller for vehicle |
| KR20110037058A (en) * | 2009-10-05 | 2011-04-13 | 한국전자통신연구원 | The apparatus for power management |
| WO2013018972A1 (en) * | 2011-08-04 | 2013-02-07 | 주식회사 엘지화학 | Over-current protection device of secondary battery, protection method thereof, and battery pack thereof |
| US8582269B2 (en) | 2011-08-04 | 2013-11-12 | Lg Chem, Ltd. | Overcurrent protection apparatus for secondary battery, protection method and battery pack |
| KR101353953B1 (en) * | 2012-02-20 | 2014-01-23 | 계명대학교 산학협력단 | A relay device and drive control method for power supply of electrical vehicle its |
| US10020648B2 (en) | 2016-04-27 | 2018-07-10 | Lsis Co., Ltd. | Apparatus for detecting malfunction of relay |
Also Published As
| Publication number | Publication date |
|---|---|
| KR960013792A (en) | 1996-05-22 |
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