KR19990054616A - Electric car - Google Patents
Electric car Download PDFInfo
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- KR19990054616A KR19990054616A KR1019970074476A KR19970074476A KR19990054616A KR 19990054616 A KR19990054616 A KR 19990054616A KR 1019970074476 A KR1019970074476 A KR 1019970074476A KR 19970074476 A KR19970074476 A KR 19970074476A KR 19990054616 A KR19990054616 A KR 19990054616A
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- generator
- turbine
- compressor
- motor
- heat exchanger
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
- B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3223—Cooling devices using compression characterised by the arrangement or type of the compressor
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
전기자동차에 관해 개시된다. 개시된 전기자동차는 압축기로 공기를 압축하고 압축된 공기에 연료를 주입/연소시켜서 고온된 연소가스를 터빈에 보내어 터빈의 회전과 더불어 출력을 얻는 가스터빈엔진과, 상기 터빈과 연결되며 터빈의 회전에 의해 같이 회전되어 전기를 발생시키는 발전기와, 상기 발전기와 연결되며 발전기에서 출력된 전기에너지에 의해 구동되는 모타와, 상기 모타와 발전기에 연결되며 부족한 전기에너지를 모타에 보충해주고 남는 전기에너지를 저장시키는 배터리를 구비하며, 상기 압축기와 연결되어 압축기로부터 유입된 고압의 기체를 냉각시키는 열교환기와, 상기 열교환기와 연결되며 열교환기로부터 유입된 저온고압의 기체를 적정 온도로 팽창시켜 실내로 유입시키는 냉방 터빈을 더 포함하여 된 것을 특징으로 한다. 이로써, 냉매를 사용하지 않고도 자동차의 실내에 냉방을 할 수 있는 이점이 있다.Disclosed is an electric vehicle. The disclosed electric vehicle has a gas turbine engine that compresses air with a compressor and injects / combusses fuel in compressed air to send a high temperature combustion gas to a turbine to obtain output along with the rotation of the turbine. The generator rotates together to generate electricity, the motor connected to the generator and driven by the electric energy output from the generator, and the motor connected to the motor and the generator to replenish the motor with insufficient electric energy and store the remaining electric energy. A heat exchanger having a battery and connected to the compressor to cool the high pressure gas introduced from the compressor, and a cooling turbine connected to the heat exchanger and expanding the low temperature and high pressure gas introduced from the heat exchanger to an appropriate temperature to flow into the room; Characterized in that it further comprises. Thus, there is an advantage that can be cooled in the interior of the vehicle without using a refrigerant.
Description
본 발명은 전기자동차에 관한 것으로, 더 상세하게는 냉매가 필요없는 공기조화장치가 채용된 전기자동차에 관한 것이다.The present invention relates to an electric vehicle, and more particularly to an electric vehicle employing an air conditioner that does not require a refrigerant.
전기자동차는 전동기를 원동기로 사용하는 전동차 및, 전동차에 연결되는 제어차 및 부수차를 말하며, 직류에 의한 직류 전차와, 교류에 의한 교류 전차, 그리고, 그 양쪽으로 전환해서 사용할 수 있는 것을 교직류 전차라고 한다.Electric cars are electric cars using electric motors as motors, control cars and secondary cars connected to electric cars, and can be used by switching between a direct current tank by DC, an alternating current tank by AC, and both. It is called a tank.
도 1에 상기 전기자동차들의 공통된 구조를 개략적으로 나타내었다.1 schematically shows a common structure of the electric vehicles.
도면에서 실선으로 표시된 부분은 기계적인 결합상태를 나타내고, 점선으로 표시된 부분은 전기적인 결합상태를 나타내며, 실선의 화살표로 표시된 부분은 기체의 유동경로를 나타낸다.In the drawings, the part indicated by solid lines indicates a mechanically coupled state, the part indicated by dashed lines indicates an electrically coupled state, and the part indicated by solid arrows indicates the flow path of the gas.
도면을 참조하면, 전기자동차의 전후 이동을 담당하는 바퀴(14)는 기어박스(13)에 의해 모타(12)와 연결되어 모타(12)의 구동과 더불어 움직이게 된다. 상기 모타(12)는 발전기(15)에 의해 발전되는 전기에너지가 사용되어 작동되거나, 배터리(11)에 저장된 전기에너지가 사용되어 작동된다. 이때, 상기 발전기(15)는 가스터빈 엔진에 의해 작동된다. 가스터빈 엔진은 외부로부터 유입된 공기를 압축하는 압축기(16)와, 상기 압축기(16)로부터 유입된 고압의 공기를 연료와 혼합시켜 연소시키는 연소기(18)와, 상기 연소기(18)로부터 유입된 고온고압의 공기를 팽창시킴으로써 동력을 출력하여 발전기(15)를 구동시키는 터빈(17)으로 이루어진다. 미설명된 레큐퍼레이터(19)는 일종의 재생기로서, 터빈(17)으로부터 유출된 고온의 가스와 압축기(16)로부터 나온 저온 고압의 기체간의 열팽창을 이루게 하여 고온고압의 기체를 연소기로 보내고 저온 가스를 외부로 방출함으로써 엔진의 열효율을 상승시키는 역할을 한다.Referring to the drawings, the wheel 14 which is responsible for the forward and backward movement of the electric vehicle is connected to the motor 12 by the gear box 13 is moved with the drive of the motor 12. The motor 12 operates by using electrical energy generated by the generator 15 or by using electrical energy stored in the battery 11. At this time, the generator 15 is operated by a gas turbine engine. The gas turbine engine includes a compressor (16) for compressing air introduced from the outside, a combustor (18) for mixing and combusting high-pressure air introduced from the compressor (16) with fuel, and an inflow from the combustor (18). It consists of a turbine 17 which outputs power by driving high temperature and high pressure air to drive the generator 15. The unexplained recuperator 19 is a type of regenerator, which forms a thermal expansion between the high temperature gas discharged from the turbine 17 and the low temperature and high pressure gas from the compressor 16 to send the high temperature and high pressure gas to the combustor. By discharging to the outside serves to increase the thermal efficiency of the engine.
한편, 상기한 구조의 전기자동차는 공기조화장치가 구비되지 않아 냉방이 이루어지지 않는 문제점이 있다. 또한, 설령 기존의 공기조화장치를 사용하더라도 냉매를 사용해야 하기 때문에 그로 인해 환경 오염을 야기시키는 문제점이 발생하게 된다.On the other hand, the electric vehicle of the above structure is not provided with an air conditioner has a problem that the cooling is not made. In addition, even if a conventional air conditioner is used, a refrigerant must be used, thereby causing a problem of environmental pollution.
본 발명은 상기 문제점을 해결하기 위하여 창출된 것으로서, 냉매를 사용하지 않더라도 냉방작용이 가능한 공기조화장치를 구비한 전기자동차를 제공함에 그 목적이 있다.The present invention has been made to solve the above problems, and an object thereof is to provide an electric vehicle having an air conditioner capable of cooling without using a refrigerant.
도 1은 종래의 전기자동차를 도시한 개략적인 도면이다.1 is a schematic view showing a conventional electric vehicle.
도 2는 본 발명에 따른 전기자동차를 도시한 개략적인 도면이다 .2 is a schematic view showing an electric vehicle according to the present invention.
< 도면의 주요 부분에 대한 부호 설명 ><Explanation of Signs of Major Parts of Drawings>
11, 21...배터리 12, 22...모터11, 21 battery 12, 22 motor
13, 23...기어박스 14, 24...바퀴13, 23 ... gearbox 14, 24 ... wheels
15, 25...발전기 16, 26...압축기15, 25 ... generators 16, 26 ... compressors
17, 27...터빈 18, 28...연소기17, 27 ... turbine 18, 28 ... burner
19, 29...리큐퍼레이터 31...열교환기19, 29 ... recuperator 31 ... heat exchanger
32...냉방터빈 33...냉방압축기32.cooling turbine 33 ... cooling compressor
34...외부공기탱크 35...자동차 실내34 Outside air tank 35 Inside car
상기 목적을 달성하기 위하여 본 발명은 압축기로 공기를 압축하고 압축된 공기에 연료를 주입/연소시켜서 고온된 연소가스를 터빈에 보내어 터빈의 회전과 더불어 출력을 얻는 가스터빈엔진과, 상기 터빈과 연결되며 터빈의 회전에 의해 같이 회전되어 전기를 발생시키는 발전기와, 상기 발전기와 연결되며 발전기에서 출력된 전기에너지에 의해 구동되는 모타와, 상기 모타와 발전기에 연결되며 부족한 전기에너지를 모타에 보충해주고 남는 전기에너지를 저장시키는 배터리를 구비한 전기자동차에 있어서, 상기 압축기와 연결되어 압축기로부터 유입된 고압의 기체를 냉각시키는 열교환기와, 상기 열교환기와 연결되며 열교환기로부터 유입된 저온고압의 기체를 적정 온도로 팽창시켜 실내로 유입시키는 냉방 터빈을 더 포함하여 된 것을 특징으로 한다.In order to achieve the above object, the present invention provides a gas turbine engine that compresses air with a compressor and injects / combusses fuel into compressed air to send a high-temperature combustion gas to the turbine to obtain an output along with the rotation of the turbine. And a generator which is rotated together by the rotation of the turbine to generate electricity, a motor connected to the generator and driven by the electric energy output from the generator, and connected to the motor and the generator to supplement the motor with insufficient electric energy. An electric vehicle having a battery for storing electrical energy, comprising: a heat exchanger connected to the compressor to cool a high pressure gas introduced from the compressor, and a low temperature high pressure gas connected to the heat exchanger and introduced from the heat exchanger at an appropriate temperature. Characterized in that it further comprises a cooling turbine to expand and enter the room do.
이하, 첨부된 도면을 참조하여 본 발명에 따른 전기자동차의 일 실시예를 상세히 설명한다. 도 2는 본 발명에 따른 전기자동차의 일 실시예를 도시한 개략적인 도면이다.Hereinafter, an embodiment of an electric vehicle according to the present invention will be described in detail with reference to the accompanying drawings. 2 is a schematic view showing an embodiment of an electric vehicle according to the present invention.
점선으로 표시된 부분은 전기적인 연결관계를 나타내며, 실선으로 표시된 부분은 기계적인 연결관계를 나타내고, 실선의 화살표로 표시된 부분은 기체의 진행경로를 나타낸다.The part indicated by the dotted line indicates the electrical connection, the part indicated by the solid line indicates the mechanical connection, and the part indicated by the solid arrow indicates the path of the gas.
본 발명에 따른 전기자동차는 압축기(26)로 공기를 압축하고 압축된 공기와 연료를 연소기(28)에 주입하여 연소시켜서 고온으로 변환된 연소가스를 터빈(27)에 보내어 터빈(27)의 회전과 더불어 출력을 얻는 가스터빈엔진을 구비한다. 상기 터빈(27)에 발전기(25)가 연결되며 터빈(27)의 회전에 의해 발전기(25)내의 회전자가 같이 회전되어 발전기(25)내 고정자와의 상호작용으로 전기를 발생시키게 된다. 또한, 상기 발전기(25)에 모타(22)가 연결되는데, 상기 모타(22)는 발전기(25)에서 출력된 전기에너지에 의해 구동된다. 상기 모타(22)에는 기어박스(23)가 연결되며 상기 기억박스(23)는 자동차 바퀴(24)와 연결된다. 그리고, 상기 모타(22)와 발전기(25)에 배터리(21)가 연결되며 상기 배터리(21)는 부족한 전기에너지를 모타(22)에 보충해주고 남는 전기에너지를 저장시키게 된다. 상기 압축기(26)에는 열교환기(31)가 연결되며, 이 열교환기(31)는 압축기(26)로부터 유입된 고압의 기체를 외부공기에 의해 냉각시키게 된다. 상기 열교환기(31)에는 냉방터빈(32)이 연결되며 이 냉방터빈(32)은 열교환기(32)로부터 유입된 저온고압의 기체를 외부공기탱크(34)로부터 유입되는 공기와 혼합한 후에 팽창시켜 적정온도로 변환하여 실내(35)로 유입시키게 된다. 이때, 효율을 높이기 위해 냉방터빈(32)에 압축기(33)가 연결되어 사용된다. 미설명된 레큐퍼레이터(29)는 일종의 재생기로서, 상기 터빈(27)과 압축기(26)에 연결되며 터빈(27)과 압축기(26)로부터 사용하고 남은 기체를 일부 유입하여 연소기(28)로 보내게 된다.The electric vehicle according to the present invention compresses air with a compressor 26, injects compressed air and fuel into the combustor 28, burns the combustion gas, and sends the combustion gas converted to a high temperature to the turbine 27 to rotate the turbine 27. In addition, it is equipped with a gas turbine engine to obtain an output. The generator 25 is connected to the turbine 27 and the rotor in the generator 25 is rotated together by the rotation of the turbine 27 to generate electricity by interaction with the stator in the generator 25. In addition, the motor 22 is connected to the generator 25, the motor 22 is driven by the electrical energy output from the generator 25. A gear box 23 is connected to the motor 22, and the memory box 23 is connected to an automobile wheel 24. The battery 21 is connected to the motor 22 and the generator 25, and the battery 21 replenishes the insufficient electric energy to the motor 22 and stores the remaining electric energy. A heat exchanger 31 is connected to the compressor 26, and the heat exchanger 31 cools the gas of high pressure introduced from the compressor 26 by external air. A cooling turbine 32 is connected to the heat exchanger 31, and the cooling turbine 32 expands after mixing low-temperature, high-pressure gas introduced from the heat exchanger 32 with air introduced from the external air tank 34. It is converted into a proper temperature to be introduced into the room (35). At this time, the compressor 33 is connected to the cooling turbine 32 to increase the efficiency. The unexplained recuperator 29 is a type of regenerator, which is connected to the turbine 27 and the compressor 26 and uses some of the remaining gas from the turbine 27 and the compressor 26 to the combustor 28. Will be sent.
상기한 구조를 가지는 전기자동차에 의하면, 가스터빈엔진의 압축기(26)에 유입된 외부공기는 압축기(26)내에서 고압의 기체로 압축된 후, 레큐레이터(29)를 거쳐 연소기(28)내로 유입되어 공급된 연료와 혼합되어 연소된다. 이 혼합기체는 고온고압의 상태로 터빈(27)내로 유입되며 저압의 상태로 팽창되면서 그 압력차만큼의 일을 하게 된다. 상기 터빈(27)에 의해 만들어진 일은 상기 발전기(25)를 구동하게 되고 구동된 발전기(25)는 전기를 만들어내게 된다. 상기 발전기(25)에 의해 만들어진 전기에너지의 일부는 모타(22)를 구동하게 되고 나머지 전기에너지는 배터리(21)내에 저장된다. 상기한 과정에서 상기 압축기(26)로부터 일부를 유용하여 열교환기(31)로 보내게 되며, 열교환기로 유입된 고온고압의 기체는 외부공기에 의해 냉각된다. 열교환기(31)내에서 저온고압의 상태로 변환된 기체는 냉방터빈(32)으로 유입된다. 냉방터빈(32)으로 유입된 저온고압의 기체는 팽창되면서 더욱 더 낮은 저온의 기체로 변환되어 자동차 실내로 유입된다. 이때, 외부공기탱크(34)내의 외부공기량을 적당히 혼합시켜 적정온도를 유지하거나, 냉방터빈(32)의 팽창율을 조절하여 적정온도를 유지하는 것이 바람직하다.According to the electric vehicle having the above-described structure, the external air introduced into the compressor 26 of the gas turbine engine is compressed into a high-pressure gas in the compressor 26 and then into the combustor 28 through the accumulator 29. It is mixed with the fuel supplied and burned. This mixed gas is introduced into the turbine 27 in a state of high temperature and high pressure, and expands to a state of low pressure to perform work as much as the pressure difference. The work produced by the turbine 27 drives the generator 25 and the driven generator 25 generates electricity. Some of the electrical energy generated by the generator 25 drives the motor 22 and the remaining electrical energy is stored in the battery 21. In the above process, a part of the compressor 26 is usefully sent to the heat exchanger 31, and the gas of high temperature and high pressure introduced into the heat exchanger is cooled by external air. The gas converted into the state of low temperature and high pressure in the heat exchanger 31 flows into the cooling turbine 32. The gas of low temperature and high pressure introduced into the cooling turbine 32 is converted into a gas of lower temperature as it is expanded and introduced into the vehicle interior. At this time, it is preferable to maintain the proper temperature by appropriately mixing the amount of external air in the external air tank 34, or to maintain the proper temperature by adjusting the expansion rate of the cooling turbine (32).
상기한 전기자동차는 다음과 같은 효과가 수반된다.The electric vehicle is accompanied with the following effects.
첫째, 냉매가 필요없다.First, no refrigerant is required.
본 발명에 따른 전기자동차의 공기조화장치에 사용되는 냉방장치는 압축된 기체를 외부와 열교환 시키는 열교환기와, 열교환된 저온고압의 기체를 더욱 압축시키는 압축기와 저온 고압의 기체를 팽창시킴으로써 온도를 더욱 하강시키는 터빈으로 이루어지므로 냉매가 필요없게 되는 이점이 있다.The air conditioner used in the air conditioner of the electric vehicle according to the present invention further reduces the temperature by expanding a gas of a low temperature and high pressure, a heat exchanger for exchanging the compressed gas to the outside, and a compressor that further compresses the heat exchanged low temperature and high pressure gas. Since it is made of a turbine that has the advantage that no refrigerant is required.
둘째, 공해방지에 효과적이다.Second, it is effective in preventing pollution.
상기한 이유로 냉매가 필요없게 되기 때문에 오존층 파괴의 주원인이 되는 냉매가 사용되지 않으므로 공해방지에 효과적이다.Since the refrigerant is not required for the above reason, the refrigerant which is the main cause of the ozone layer destruction is not used, which is effective for preventing pollution.
본 발명은 도면에 도시된 일 실시예를 참고로 설명되었으나, 이는 예시적인 것에 불과하며, 당해 분야에서 통상적 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다. 따라서, 본 발명의 진정한 기술적 보호 범위는 첨부된 특허 청구범위에 한해서 정해져야 할 것이다.Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention should be defined only by the appended claims.
Claims (1)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970074476A KR100257403B1 (en) | 1997-12-26 | 1997-12-26 | Electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970074476A KR100257403B1 (en) | 1997-12-26 | 1997-12-26 | Electric vehicle |
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| Publication Number | Publication Date |
|---|---|
| KR19990054616A true KR19990054616A (en) | 1999-07-15 |
| KR100257403B1 KR100257403B1 (en) | 2000-05-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108749586A (en) * | 2018-07-06 | 2018-11-06 | 至玥腾风科技投资集团有限公司 | Extended-range electric vehicle energy-recuperation system |
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| KR101349288B1 (en) * | 2011-04-11 | 2014-01-10 | 한국과학기술연구원 | Electrical vehicle for low emission and range extending |
| CN104786858B (en) | 2015-03-24 | 2017-03-29 | 至玥腾风科技投资集团有限公司 | A kind of stroke-increasing electric automobile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108749586A (en) * | 2018-07-06 | 2018-11-06 | 至玥腾风科技投资集团有限公司 | Extended-range electric vehicle energy-recuperation system |
| CN108749586B (en) * | 2018-07-06 | 2024-03-19 | 刘慕华 | Energy recovery system of extended range electric vehicle |
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