CN102146990A - Automatic speed changing system of electric automobile - Google Patents
Automatic speed changing system of electric automobile Download PDFInfo
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- CN102146990A CN102146990A CN2011101066924A CN201110106692A CN102146990A CN 102146990 A CN102146990 A CN 102146990A CN 2011101066924 A CN2011101066924 A CN 2011101066924A CN 201110106692 A CN201110106692 A CN 201110106692A CN 102146990 A CN102146990 A CN 102146990A
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- gear
- gear ring
- planetary
- planetary gear
- speed changing
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Abstract
The invention relates to an automatic speed changing system of an electric automobile. The system comprises an input shaft, a planetary frame, a first gear ring and a second gear ring, wherein a sun gear at the front end of the input shaft is respectively meshed with a first planetary gear and a second planetary gear; the first gear ring is respectively meshed with the first planetary gear, the second planetary gear, a third planetary gear and a fourth planetary gear; a clutch is arranged between the first gear ring and the planetary frame; the first gear ring and the planetary frame are respectively provided with a first brake and a second brake; the third planetary gear and the fourth planetary gear are all meshed with the second gear ring; and the second gear ring is connected with an output shaft. The invention has the beneficial effects of simple and compact structure, less volume and weight and higher transmission efficiency, the traditional fixed shaft type speed changing box is replaced by a planetary gear type speed changing box, relatively to the existing scheme, the link of speed regulating for the motor is saved, the gear shift time is shortened, the gear shift quality is improved, and the speed changing device corresponds to the light weight principle of the automobile.
Description
Technical field
The present invention relates to a kind of electric vehicle automatic speed-changing system.
Background technique
Fast development along with automotive engineering, the automatic gear for vehicle that various ways occurred, mainly contain: hydraulic mechanical type automatic transmission (AT), mechanical continuously-variable transmission (CVT), and exerting both at home and abroad the electric control mechanical type automatic speed variator (AMT) studied in recent years.The particularly development of electric control mechanical type automatic speed variator because it has the advantage of the existing manual transmission production investment of the desired high fuel economy of present automobile industry development, low emission and protection, just has been subjected to the attention of each big automobile factory.
The generation of electric control mechanical type automatic speed variator (hereinafter to be referred as AMT) is based on the development of traditional parallel-axis type manual transmission and comes.Among developmental research process to electric control mechanical type automatic speed variator, also discovery gradually its some shortcomings, can cause tangible power interruption when the problem of its maximum is shifted gears exactly, this power character to vehicle, travelling comfort have been brought certain influence.The shift process of common AMT is: cut-off clutch at first, and control gearshift then speed changer is plucked neutral, block selecting again, gearshift afterwards, last engaging clutch.The control of the separating and combining of clutch is a difficult point of this gearshift mode in this process.2008, the electric vehicle three retaining automatic mechanical transmissions of Beijing Institute of Technology's research and development have been cancelled clutch, adopt motor and the integrated control of gearbox, (motor is no longer exported torque to control motor freedom of entry pattern under this pattern when gearshift, only depend on the inertia rotation), the retaining action is plucked by the actuator of control gearshift afterwards, plucking retaining controls motor again after finishing and carries out speed governing, rotating speed is adjusted to the rotating speed of next gear, after finishing, motor speed-regulating returns free schema, gearshift actuator finishes the operation of hanging next gear, and last motor leaves free schema, the driven vehicle driving.The advantage of this mode is to have saved clutch, utilizes the integrated control of motor and AMT to realize the function of clutch, has alleviated system weight, has saved arrangement space, has reduced cost; It is long that shortcoming is that motor speed-regulating and gearshift are carried out the actuation time of plucking retaining, putting into gear, and the power character and the travelling comfort of vehicle affected greatly.
Summary of the invention
The purpose of this invention is to provide a kind of electric vehicle automatic speed-changing system, to overcome above-mentioned the deficiencies in the prior art.
The objective of the invention is to be achieved through the following technical solutions:
A kind of electric vehicle automatic speed-changing system, comprise input shaft, planet carrier, first gear ring and second gear ring, wherein planet carrier is provided with first planetary pinion, second planetary pinion, the third line star gear and fourth line star gear, and the sun gear of described input shaft front end is connected with a joggle with first planetary pinion and second planetary pinion respectively; First gear ring is connected with first planetary pinion, second planetary pinion, the third line star gear and fourth line star gear engagement respectively; Be provided with clutch between first gear ring and the planet carrier, be respectively equipped with first break and second break on first gear ring and the planet carrier; The third line star gear and fourth line star gear all are connected with a joggle with second gear ring, and second gear ring is connected with output shaft.
Beneficial effect of the present invention is: simple and compact for structure, volume weight is less, the direct-connected gearbox of main drive motor; The cancellation clutch, both can adopt during gearshift and not interrupt power, only rely on the shift clutch of operation gearbox, break is finished the mode of gearshift, also can adopt the mode of motor and the integrated control of gearbox, the control main drive motor enters a free schema when for example shifting gears, under this pattern, main drive motor is no longer exported torque, only depends on the inertia rotation, carries out gear shift operation thereby be convenient to gearbox, this kind structure transmission efficiency is higher, conventional fixed shaft type gearbox is changed to the planetary gear type gearbox, has saved the link of motor speed-regulating, shortened the gearshift time, improve shift quality, met automobile lightweight principle.
Description of drawings
With reference to the accompanying drawings the present invention is described in further detail below.
Fig. 1 is the schematic diagram of the described electric vehicle automatic speed-changing system of the embodiment of the invention;
Fig. 2 is the user mode reference drawing of the described electric vehicle automatic speed-changing system of the embodiment of the invention.
Among the figure:
1, input shaft; 2, planet carrier; 201, first planetary pinion; 202, second planetary pinion; 203, the third line star gear; 204, fourth line star gear; 3, first gear ring; 4, second gear ring; 5, clutch; 6, first break; 7, second break; 8, output shaft.
Embodiment
Shown in Fig. 1-2, the described a kind of electric vehicle automatic speed-changing system of the embodiment of the invention, comprise input shaft 1, planet carrier 2, first gear ring 3 and second gear ring 4, wherein planet carrier 2 is provided with first planetary pinion 201, second planetary pinion 202, the third line star gear 203 and fourth line star gear 204, and the sun gear of described input shaft 1 front end is connected with a joggle with first planetary pinion 201 and second planetary pinion 202 respectively; First gear ring 4 is connected with a joggle with first planetary pinion 201, second planetary pinion 202, the third line star gear 203 and fourth line star gear 204 respectively; Be provided with between first gear ring 4 and the planet carrier 2 and be respectively equipped with first break 6 and second break 7 on clutch 5, the first gear rings 4 and the planet carrier 2; The third line star gear 203 and fourth line star gear 204 all are connected with a joggle with second gear ring 4, and second gear ring 4 is connected with output shaft 8.
During concrete the use, during one retaining, first break 6 is fixing with first gear ring 3, power enters from input shaft 1, because first gear ring 3 is fixing, power is finally exported by second gear ring 4 through the third line star gear 203 and fourth line star gear 204 by planet carrier 2, and second gear ring 4 is connected with output shaft 8, the power transmission direction is a forward, for slowing down.
During two retainings, second break 7 is fixing with planet carrier 2, power enters from input shaft 1, because planet carrier 2 is fixing, power is finally exported by second gear ring 4 by the third line star gear 203 and fourth line star gear 204 through first gear ring 3, second gear ring 4 is connected with output shaft 8, and the power transmission direction is a forward, for slowing down.
During three retainings, clutch 5 closures, at this moment, first gear ring 4 is as a whole with planet carrier 2, it is as a whole to be inconjunction with first planetary pinion 201, second planetary pinion 202, the third line star gear 203 and fourth line star gear 204, is equivalent to direct retaining, and velocity ratio is 1.
Reversing gear reverses by motor realizes.
Claims (1)
1. electric vehicle automatic speed-changing system, comprise input shaft (1), planet carrier (2), first gear ring (3) and second gear ring (4), wherein planet carrier (2) is provided with first planetary pinion (201), second planetary pinion (202), the third line star gear (203) and fourth line star gear (204), it is characterized in that: the sun gear of described input shaft (1) front end is connected with a joggle with first planetary pinion (201) and second planetary pinion (202) respectively; First gear ring (4) is connected with a joggle with first planetary pinion (201), second planetary pinion (202), the third line star gear (203) and fourth line star gear (204) respectively; Be provided with clutch (5) between first gear ring (4) and the planet carrier (2), be respectively equipped with first break (6) and second break (7) on first gear ring (4) and the planet carrier (2); The third line star gear (203) and fourth line star gear (204) all are connected with a joggle with second gear ring (4), and second gear ring (4) is connected with output shaft (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101066924A CN102146990A (en) | 2011-04-27 | 2011-04-27 | Automatic speed changing system of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101066924A CN102146990A (en) | 2011-04-27 | 2011-04-27 | Automatic speed changing system of electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102146990A true CN102146990A (en) | 2011-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101066924A Pending CN102146990A (en) | 2011-04-27 | 2011-04-27 | Automatic speed changing system of electric automobile |
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| Country | Link |
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| CN (1) | CN102146990A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363034A (en) * | 2013-08-01 | 2013-10-23 | 南宁市坤捷机电设备制造有限公司 | Automatic speed changer for multifunctional garbage electric car |
| CN104827895A (en) * | 2014-12-08 | 2015-08-12 | 北汽福田汽车股份有限公司 | Transmission and execution system for pure electric sweeper, vehicle and control method |
| CN108317227A (en) * | 2018-04-08 | 2018-07-24 | 昆山德拉特兰传动科技有限公司 | Two speed transmissions |
| CN109578533A (en) * | 2017-09-29 | 2019-04-05 | 比亚迪股份有限公司 | The electronic assembly of three gears and its speed ratio determine method |
| CN114294386A (en) * | 2021-01-12 | 2022-04-08 | 花潍 | Double-speed transmission for electric automobile |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6592484B1 (en) * | 1999-08-09 | 2003-07-15 | Gregory A. Schultz | Transmission gearbox for parallel hybrid electric vehicles |
| JP3619419B2 (en) * | 2000-03-13 | 2005-02-09 | 株式会社エクセディ | Power transmission device for hybrid electric vehicles |
| CN1818418A (en) * | 2006-03-20 | 2006-08-16 | 北京理工大学 | Electric coupling assembly of double-row planet gear apparatus of mixed dynamic vehicle |
| CN101004204A (en) * | 2007-01-19 | 2007-07-25 | 重庆大学 | Multimode transmission system with double planet wheel rows of mixing dynamical automobile |
| CN202017737U (en) * | 2011-04-27 | 2011-10-26 | 北京理工华创电动车技术有限公司 | Automatic speed-change system for electric automobile |
-
2011
- 2011-04-27 CN CN2011101066924A patent/CN102146990A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6592484B1 (en) * | 1999-08-09 | 2003-07-15 | Gregory A. Schultz | Transmission gearbox for parallel hybrid electric vehicles |
| JP3619419B2 (en) * | 2000-03-13 | 2005-02-09 | 株式会社エクセディ | Power transmission device for hybrid electric vehicles |
| CN1818418A (en) * | 2006-03-20 | 2006-08-16 | 北京理工大学 | Electric coupling assembly of double-row planet gear apparatus of mixed dynamic vehicle |
| CN101004204A (en) * | 2007-01-19 | 2007-07-25 | 重庆大学 | Multimode transmission system with double planet wheel rows of mixing dynamical automobile |
| CN202017737U (en) * | 2011-04-27 | 2011-10-26 | 北京理工华创电动车技术有限公司 | Automatic speed-change system for electric automobile |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363034A (en) * | 2013-08-01 | 2013-10-23 | 南宁市坤捷机电设备制造有限公司 | Automatic speed changer for multifunctional garbage electric car |
| CN104827895A (en) * | 2014-12-08 | 2015-08-12 | 北汽福田汽车股份有限公司 | Transmission and execution system for pure electric sweeper, vehicle and control method |
| CN104827895B (en) * | 2014-12-08 | 2017-08-04 | 北汽福田汽车股份有限公司 | The transmission and execution system of pure electric sweeper truck, vehicle and control method |
| CN109578533A (en) * | 2017-09-29 | 2019-04-05 | 比亚迪股份有限公司 | The electronic assembly of three gears and its speed ratio determine method |
| CN108317227A (en) * | 2018-04-08 | 2018-07-24 | 昆山德拉特兰传动科技有限公司 | Two speed transmissions |
| CN108317227B (en) * | 2018-04-08 | 2024-04-12 | 昆山德拉特兰传动科技有限公司 | Two-speed transmission |
| CN114294386A (en) * | 2021-01-12 | 2022-04-08 | 花潍 | Double-speed transmission for electric automobile |
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Application publication date: 20110810 |