CN203032365U - Range-extending type electric vehicle power system - Google Patents
Range-extending type electric vehicle power system Download PDFInfo
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- CN203032365U CN203032365U CN201220475640.4U CN201220475640U CN203032365U CN 203032365 U CN203032365 U CN 203032365U CN 201220475640 U CN201220475640 U CN 201220475640U CN 203032365 U CN203032365 U CN 203032365U
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Abstract
The utility model relates to a range-extending type electric vehicle power system. The range-extending type electric vehicle power system mainly comprises an internal-combustion engine, a first motor, a second motor, a double-clutch transmission device and a variable gear mechanism; a crankshaft of the internal-combustion engine is connected with a shell body of the double-clutch transmission device; a first clutch of the double-clutch transmission device is connected with a first transmission gear through a transmission shaft; a second clutch of the double-clutch transmission device is connected with a first motor rotor; and a second motor rotor is connected with a second transmission gear. The switchover between a series connection operational mode and a parallel connection operational mode of the range-extending type electric vehicle power system can be achieved through controlling of combination or separation of the first clutch and the second clutch of the double-clutch transmission device. The variable gear mechanism formed by the first transmission gear and the second transmission gear can increase output torque of the second motor.
Description
Technical field
The utility model relates to a kind of stroke-increasing electric automobile, particularly has combustion engine and two electrical motors and can carry out combustion engine and the electrical motor stroke-increasing electric automobile power system that drives in parallel.
Background technology
Become today of auto trade development topic in energy-conservation and environmental protection, hybrid vehicle has become the object of various countries automobile vendor primary study.Hybrid vehicle (Hybrid Electrical Vehicle is called for short HEV) refers to equip simultaneously the automobile of two kinds of power resources-heat dynamic resources (being produced by traditional spark ignition engine or diesel engine) and electrodynamic source (electrokinetic cell and electrical motor).Hybrid vehicle does not need external charge; be to be the electronlmobil in major impetus source with the driving engine; by hybrid power functions such as engine idle shutdown, braking energy recovery, low speed pure motor driving, driving generating, driving power-assisted and the independent drivings of driving engine; make driving engine to regulate and control flexibly according to the actual operating mode of car load; remain on the interior work in zone of Combination property the best, thereby reduce oil consumption and discharging.
Compare with hybrid vehicle, pure electric automobile (Battery Electric vehicle is called for short BEV) relies on electric direct motor drive vehicle fully, and its energy source has been realized zero-emission from electrical network, the efficiency height, and noise is little.But be subjected to current driving force battery technology horizontal constraints, its energy density can't satisfy automobile-used demand, and the car load continual mileage is limited, can not satisfy the daily operating needs of user.
In order to prolong the continual mileage of pure electric automobile, people have increased a high efficiency internal combustion engine in power system of electric automobile, and when electrokinetic cell voltage reduced, it can drive electrical generator power is provided, and reach the purpose that prolongs continual mileage with this.This class battery-driven car is called as stroke-increasing electric automobile (Range-extended Electric Vehicle is called for short REEV).According to the power system structure, the stroke-increasing electric automobile that exists can be divided into series connection stroke-increasing electric automobile and series-parallel connection stroke-increasing electric automobile at present.Series connection stroke-increasing electric automobile advantage aspect cost increase (comparing with traditional vehicle) is bigger, and dynamic property is difficult to satisfy the vehicle performance requirement under electric quantity maintaining stage, and the fuel economy of running at high speed is also relatively poor.Series-parallel connection stroke-increasing electric automobile dynamic property and oil consumption under electric quantity maintaining stage all are better than the stroke-increasing electric automobile of connecting, but power system complexity, cost are higher;
(1) because the combustion engine of traditional vehicle (or hybrid vehicle) need be operated in bottom gear with full
Foot acceleration demand, the low and load of its rate of load condensate and rotation speed change are fast, influence the car load economy;
(2) in existing hybrid power configuration, motor is mainly used to regulate the work area of combustion engine, thereby combustion engine is worked as far as possible between optimum economic zone, the power that driving vehicle needs is still mainly provided by combustion engine, therefore the power of combustion engine is very big, influences car load economy and emission performance;
(3) in existing hybrid power configuration, the first electrical motor form generally has two kinds, BSG(Belt Starter Generator) and ISG (Integrated Starter Generator), they directly link to each other with combustion engine usually, can drive them during internal combustion engine rotates always, this not only can produce mechanical friction loss, also can produce the electromagnetism loss, influences the car load economy;
(4) though pure electric automobile can be realized zero consumption of fuel and zero-emission, because the volume of electrokinetic cell and the restriction of energy density, its continual mileage is very limited;
(5) the series connection stroke-increasing electric automobile is increasing under the journey pattern, has energy secondary conversion loss, and fuel economy is low.
Summary of the invention
The purpose of this utility model is to provide a kind of stroke-increasing electric automobile power system, and it adopts the combustion engine of a miniwatt grade and second electrical motor of a high-power grade.When internal combustion engine drive, prevent from driving the rotation of first electrical motor, reduced friction and the electromagnetism loss of first electrical motor.Provide a bigger speed ratio by change gear mechanism for second electrical motor, give full play to motor by the high-performance characteristics of realization of High Speed, car load dynamic property demand is satisfied by second electrical motor, reduced the power of combustion engine, improve the rate of load condensate of combustion engine, improved car load fuel economy and emission performance.When the electrokinetic cell electric weight was not enough, tandem drive vehicle during low speed was given power battery charging by internal combustion engine drive first electrical motor, keeps electric quantity balancing; The vehicle that drives in parallel during high speed, the energy transfer efficiency height on the basis that guarantees vehicle power, has further prolonged the continual mileage of vehicle.
The technical solution of the utility model is achieved in that a kind of stroke-increasing electric automobile power system, be made up of combustion engine, first electrical motor, second electrical motor, dual clutch transmission and a cover change gear mechanism, wherein change gear mechanism is made up of first transmission gear and second transmission gear; It is characterized in that: the bent axle of combustion engine is connected with the housing of dual clutch transmission, the first clutch of dual clutch transmission is connected with first transmission gear by transmission shaft, second clutch is connected with first motor rotor, second motor rotor is connected with second transmission gear, by the torque that change gear mechanism increases second electrical motor, can satisfy the maximum climbable gradient of vehicle requirement.
Described combustion engine is by the first transmission gear outputting power, and second electrical motor is by the change gear mechanism outputting power.
Described first clutch combination is carried out transmission of power between combustion engine and second electrical motor, and first clutch separates, and transmission of power disconnects between combustion engine and second electrical motor; Described second clutch combination, carry out transmission of power between combustion engine and first electrical motor, second clutch separates, and transmission of power disconnects between combustion engine and first electrical motor, also can cancel second clutch, first electrical motor becomes to be rigidly connected with the housing of dual clutch transmission.
Good effect of the present utility model is to adopt change gear mechanism, reduces vehicle to the second motor torque demand, reduces the second electrical motor volume; First electrical motor, second electrical motor, the integrated design of change gear mechanism make system architecture compacter, realize the lightweight of power system; Compare the same level hybrid vehicle, power of IC engine is little, has improved the rate of load condensate of combustion engine when vehicle travels; When the second clutch of dual clutch transmission separates, drive the rotation of first electrical motor when preventing internal combustion engine drive, reduced loss due to friction and the electromagnetism loss of first electrical motor, thereby improved the fuel economy of car load; During the cancellation second clutch, the power system structure is compacter, can reduce integral vehicle cost.During low vehicle speeds, power system can be pure electronic or series model work; During high vehicle speeds, power system can be electric-only mode work, also can be in conjunction with first clutch, make driving engine participate in vehicular drive, this moment, power system energy transfer efficiency height on the basis that guarantees the car load dynamic property, can further prolong the continual mileage of vehicle.Based on power system of the present utility model, can cancel combustion engine, dual clutch transmission and first electrical motor, power system is worked under electric-only mode always, the utility model develops into a kind of pure electric automobile power system, and the dynamical system that can realize stroke-increasing electric automobile and pure electric automobile is platform altogether.
Description of drawings
Fig. 1 is depicted as the structural representation of stroke-increasing electric automobile power system.
Figure 2 shows that two kinds of working stages of power system.Wherein SOC is the state-of-charge of electrokinetic cell.The SOC height illustrates electrokinetic cell electric weight abundance; SOC is low, and electrokinetic cell electric weight deficiency is described.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described: as shown in Figure 1, this stroke-increasing electric automobile power system possesses: combustion engine 1, dual clutch transmission housing 2, first clutch 3, second clutch 4, dual clutch transmission 5, the first motor stators 6, first motor rotor 7, second transmission gear, 8, the second motor stators, 9, the second motor rotors 10, first transmission gear 11, power output gear 12.
The bent axle of combustion engine 1 is connected with the housing of dual clutch transmission 2.The first clutch 3 of dual clutch transmission is connected with first transmission gear 11 by transmission shaft 13, and second clutch 4 is connected with first motor rotor 7.Second motor rotor 10 is connected with second transmission gear 8.
Second clutch 4 combinations are carried out transmission of power between combustion engine 1 and first motor rotor 7.Second clutch 4 separates, and transmission of power disconnects between combustion engine 1 and first motor rotor 7.
First clutch 3 combinations are carried out transmission of power between combustion engine 1 and second motor rotor 10.First clutch 3 separates, and transmission of power disconnects between combustion engine 1 and second motor rotor 10.
According to power battery charged state SOC, power system has two working stages: electric quantity consumption CD stage and electric weight are kept the CS stage.When the electrokinetic cell electric weight was sufficient, system works was in the CD stage, and when the electrokinetic cell electric weight was reduced to a certain degree, system entered into the CS stage.CD under the stage power system following several mode of operation is arranged: low speed electric-only mode, high speed electric-only mode, the independent drive pattern of high speed combustion engine and high-speed joint drive pattern.CS under the stage power system following several mode of operation is arranged: low speed series model, high speed traveling power generation mode, the independent drive pattern of high speed combustion engine and high-speed joint drive pattern.
Under the electric-only mode, combustion engine 1 quits work, and first clutch 3 separates, and first electrical motor quits work, and second electrical motor drives vehicle separately and travels.
Under the series model, combustion engine 1 work, first clutch 3 separates, second clutch 4 combinations, the generating of first electrical motor, second electrical motor drives vehicle separately and travels.
Under the driving power generation mode, combustion engine 1 work, first clutch 3 combinations, second clutch 4 combinations, the generating of first electrical motor, second electrical motor is with commentaries on classics, and combustion engine 1 drives vehicle and travels.
Under the independent drive pattern of combustion engine, combustion engine 1 work, first clutch 3 combinations, second clutch 4 separates, and first electrical motor quits work, and second electrical motor is with commentaries on classics, and combustion engine 1 drives vehicle and travels.
Under the associating drive pattern, combustion engine 1 work, first clutch 3 combinations, second clutch 4 separates, and first electrical motor quits work, and second electrical motor and combustion engine 1 are united the driving vehicle and are travelled.As shown in the table:
Claims (4)
1. a stroke-increasing electric automobile power system is made up of combustion engine, first electrical motor, second electrical motor, dual clutch transmission and a cover change gear mechanism, and wherein change gear mechanism is made up of first transmission gear and second transmission gear; It is characterized in that: the bent axle of combustion engine is connected with the housing of dual clutch transmission, the first clutch of dual clutch transmission is connected with first transmission gear by transmission shaft, second clutch is connected with first motor rotor, second motor rotor is connected with second transmission gear, by the torque that change gear mechanism increases second electrical motor, can satisfy the maximum climbable gradient of vehicle requirement.
2. stroke-increasing electric automobile power system according to claim 1 is characterized in that described combustion engine by the first transmission gear outputting power, and second electrical motor is by the change gear mechanism outputting power.
3. stroke-increasing electric automobile power system according to claim 1, it is characterized in that described first clutch combination, carry out transmission of power between combustion engine and second electrical motor, first clutch separates, and transmission of power disconnects between combustion engine and second electrical motor; Described second clutch combination, carry out transmission of power between combustion engine and first electrical motor, second clutch separates, and transmission of power disconnects between combustion engine and first electrical motor, also can cancel second clutch, first electrical motor becomes to be rigidly connected with the housing of dual clutch transmission.
4. stroke-increasing electric automobile power system according to claim 1, it is characterized in that described combustion engine, dual clutch transmission and first electrical motor can cancel, power system is worked under electric-only mode always and is a kind of pure electric automobile power system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220475640.4U CN203032365U (en) | 2012-09-18 | 2012-09-18 | Range-extending type electric vehicle power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220475640.4U CN203032365U (en) | 2012-09-18 | 2012-09-18 | Range-extending type electric vehicle power system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203032365U true CN203032365U (en) | 2013-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220475640.4U Expired - Lifetime CN203032365U (en) | 2012-09-18 | 2012-09-18 | Range-extending type electric vehicle power system |
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| Country | Link |
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| CN (1) | CN203032365U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102874095A (en) * | 2012-09-18 | 2013-01-16 | 中国第一汽车股份有限公司 | Range extended electric vehicle power system |
-
2012
- 2012-09-18 CN CN201220475640.4U patent/CN203032365U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102874095A (en) * | 2012-09-18 | 2013-01-16 | 中国第一汽车股份有限公司 | Range extended electric vehicle power system |
| CN102874095B (en) * | 2012-09-18 | 2016-04-20 | 中国第一汽车股份有限公司 | A kind of range extended electric vehicle power system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |
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| CX01 | Expiry of patent term |