CN202628961U - Variable-speed drive device of electric automobile - Google Patents
Variable-speed drive device of electric automobile Download PDFInfo
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- CN202628961U CN202628961U CN 201220311122 CN201220311122U CN202628961U CN 202628961 U CN202628961 U CN 202628961U CN 201220311122 CN201220311122 CN 201220311122 CN 201220311122 U CN201220311122 U CN 201220311122U CN 202628961 U CN202628961 U CN 202628961U
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- gear ring
- input shaft
- power input
- gear
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Abstract
A variable-speed drive device of an electric automobile comprises a shell, a power input shaft and a power output shaft, wherein the power input shaft and the power output shaft are arranged at two ends of the shell; a sun gear and a gear ring are coaxially arranged on the power input shaft; the sun gear is fixedly connected with the power input shaft; the gear ring is movably sleeved on the power input shaft; the power output shaft is fixedly connected with a planet carrier; the planet carrier is provided with a plurality of planet gears; and the planet gears are arranged between the gear ring and the sun gear and are simultaneously meshed with the gear ring and the sun gear. By the structure, second-gear speed variation can be realized by matching a first clutch with a second clutch; requirements on different drive ratios under the condition that the power output shaft rotates at high speed and the resistance is high can be met by the stepless speed variation of a motor; phenomena that a traction motor works in an overload state or in an underload state are reduced; and the service life of the traction motor is prolonged.
Description
Technical field
The utility model relates to a kind of variable speed drive, and is particularly a kind of with the electric automobile gear transmission device of motor as power source.
Background technique
The driver part of electric vehicle is a motor, and relatively traditional combustion engine has the operating range of broad, but zero-speed operation, moment of torsion and rotating speed can accurately control, and the characteristic of perseverance power is more suitable for the vehicle operating demand when permanent torque is with high speed during motor low speed.
Because but motor itself just has the speed adjustable range and the zero-speed operation of broad; Generally, only need rotating speed, can realize higher property of automatic shft through control input power (motor); And motor self the realization gear reversing function that can reverse; Therefore, be difficult to satisfy the automobile of the traditional internal combustion engine driving of actual road conditions needs, as the automobile of power source the degree of dependence of speed changer be significantly less than the automobile of traditional internal combustion engine driving with motor than the torque excursion.
Yet, in the traditional electric automobile, carry out speed change, transmission with following dual mode usually:
1, directly utilize the rotating speed of motor self to realize speed change.Adopt such structure, only directly export through the rotating speed of motor, when starting motor with overload work, not only the moment of output less, be short of power, cause the vehicle starting time for acceleration longer, and the electric motor overheating amount is big, working life is short.
2, continue to use variable transmission mechanism in the automobile of traditional internal combustion engine driving; But motor self just has the speed adjustable range of broad; If too much gear is set, has then increased unnecessary speed Control difficulty, and reduced the riding manipulation convenience that electric vehicle should have; And, the variable transmission mechanism that automobile adopted of traditional internal combustion engine driving, bulky.
The model utility content
The technical problem that the utility model will solve is to overcome the above-mentioned deficiency of existing technology, and a kind of electric automobile gear transmission device that can when starting, export big instantaneous torque is provided.
For solving the problems of the technologies described above, the utility model provides following technological scheme:
A kind of electric automobile gear transmission device; Comprise housing; And the power input shaft and the pto that are arranged at the housing two ends, being coaxially arranged with sun gear and gear ring on the said power input shaft, said sun gear is fixedly connected with power input shaft; Said gear ring is movably set on the power input shaft; Said pto is fixedly connected with planet carrier, and said planet carrier is provided with several planetary pinions, and said planetary pinion is arranged between gear ring and the sun gear and with gear ring and sun gear and meshes simultaneously; Be provided with first clutch between said housing and the gear ring, said first clutch makes housing combine with gear ring or separates, and is provided with second clutch between said power input shaft and the gear ring, and said second clutch makes power input shaft combine with gear ring or separates.
Adopt such structure; Can be through first clutch and the second clutch realization two stage speed change that cooperatively interacts; And the stepless time adjustment of combination motor self; Can satisfy under the high-drag condition and the demand of different drive ratios during the high rotating speed of pto, reduce the situation of traction motor overload work or underloading work, the working life of improving traction motor.
When automobile goes under high-drag road conditions such as starting, climbing; Pto needs bigger instantaneous torque to satisfy the requirement of tractive force and acceleration; At this moment, planetary gears is adjusted to working method of slowing down at the same level, makes between power input shaft and the pto to have than big speed ratio through first clutch and second clutch; Realize high moment of torsion output; And slowed down the operating load of motor under the high-drag road conditions, reduce the situation of electromotor overload work, thereby prolonged the working life of motor;
When vehicle normal or when running at high speed; The rotating speed that need prevent power input shaft is too high; At this moment, planetary gears is adjusted to the working method with speed at the same level, makes to have between power input shaft and the pto far below the velocity ratio under the high-drag condition through first clutch and second clutch; When making the rotating speed of power input shaft remain in the nominal situation speed range of motor, increased the rotating speed of pto; Thereby the raising Vehicle Speed, and avoided vehicle after starting in the running process motor with light condition work, thereby prolonged working life of motor.In addition, adopt said structure, compare, have variable-speed operating control beneficial effect easily and efficiently with the manual transmission gear shift operation.Simultaneously, adopt above-mentioned first clutch and second clutch to combine to realize the two-stage speed change with planetary gears, compare with the mode of two-stage hand speed changer, volume, thickness size are littler.
Preferably, said first clutch is an electric control clutch.Adopt such structure, have beneficial effect simple in structure, that clutch is easy to operate.
Preferably, said second clutch is a magnetic clutch.Adopt such structure, have beneficial effect simple in structure, that clutch is easy to operate.
Preferably, when said first clutch combined housing and gear ring, said second clutch made power input shaft separate with gear ring; When said first clutch made housing separate with gear ring, said second clutch combined power input shaft and gear ring.
A kind of electric automobile gear transmission device; Comprise housing; And the power input shaft and the pto that are arranged at the housing two ends, being coaxially arranged with sun gear and gear ring on the said power input shaft, said sun gear is fixedly connected with power input shaft; Said gear ring is movably set on the power input shaft; Said pto is fixedly connected with planet carrier, and said planet carrier is provided with several planetary pinions, and said planetary pinion is arranged between gear ring and the sun gear and with gear ring and sun gear and meshes simultaneously; Be provided with first clutch between said housing and the gear ring, said first clutch makes housing combine with gear ring or separates, and is provided with second clutch between said pto and the gear ring, and said second clutch makes pto combine with gear ring or separates.
Preferably, said first clutch is an electric control clutch.
Preferably, said second clutch is a magnetic clutch.
Preferably, when said first clutch combined housing and gear ring, said second clutch made pto separate with gear ring; When said first clutch made housing separate with gear ring, said second clutch combined pto and gear ring.
Compared with prior art, the beneficial effect of the utility model:
1, through first clutch and the second clutch realization two stage speed change that cooperatively interacts; And the stepless time adjustment of combination motor self; Can satisfy under the high-drag condition and the demand of different drive ratios during the high rotating speed of pto; Reduce the situation of traction motor overload work or underloading work, improve the working life of traction motor.
2, compare with manual dual-range transmission, adopt first clutch and second clutch to combine realization two-stage speed change with planetary gears, volume, thickness size are littler; Simultaneously, variable-speed operating control is convenient, fast.
Description of drawings
Fig. 1 is the structural principle schematic representation of the utility model electric automobile gear transmission device.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
The mode of execution of the utility model is not limited to following examples, all belongs within the protection domain of the utility model in the various variations of making under the prerequisite that does not break away from the utility model aim.
As shown in Figure 1, electric automobile gear transmission device in the present embodiment comprises housing 6; And the power input shaft 1 and pto 9 that are arranged at housing 6 two ends; Be coaxially arranged with sun gear 8 and gear ring 3 on the power input shaft 1, sun gear 8 is fixedly connected with power input shaft 1, and gear ring 3 is movably set on the power input shaft 1; Pto 9 is fixedly connected with planet carrier 5; Planet carrier 5 is provided with several planetary pinions 4, and planetary pinion 4 is arranged between gear ring 3 and the sun gear 8 and with gear ring 3 and sun gear 8 and meshes simultaneously, constitutes planetary gears.Between housing 6 and gear ring 3, be provided with first clutch 7, first clutch 7 makes housing 6 combine with gear ring 3 or separates.Wherein, first clutch 7 is an electric control clutch, according to operational order be combined into one linkage or housing separated with gear ring 3 and each autorotation of housing 6 and gear ring 3.On power input shaft 1, be set with second clutch 2, second clutch 2 makes power input shaft 1 combine with gear ring 3 or separates.Wherein, second clutch 2 is a magnetic clutch, according to operational order be combined into one linkage or power input shaft 1 separated with gear ring 3 and relatively rotate of power input shaft 1 and gear ring 3.
When first clutch 7 made housing 6 combine with gear ring 3, second clutch 2 made power input shaft 1 separate with gear ring 3; When first clutch 7 made housing 6 separate with gear ring 3, said second clutch 2 combined power input shaft 1 and gear ring 3.
Need to prove that in the described mode of execution of this specification, motor self is stepless speed regulation and the rotating speed of power input shaft 1 regulated within the specific limits all.
When pto 9 is worked under with high-drag, slow-speed of revolution condition, under situation such as starting, climbing, export high moment of torsion through the forward gears that slows down in the same way, can avoid motor with overload work;
When galloping; For avoid power input shaft 1 rotating speed too high, make motor in light condition work; Mode through fast is together in the same way carried out transmission, and according to road conditions motor is adjusted to rational output power work, thereby improves the working life of motor.
The working method of present embodiment is following:
The output shaft of motor connects after-applied live axle power with power input shaft 1; In whole planetary gears, because sun gear 8 is fixedly set in the end of power input shaft 1, sun gear 8 is a driving wheel; After planetary gears speed change or transmission, export to pto 9.
When vehicle start, earlier first clutch 7 is combined into one housing 6 and gear ring 3, and opens, make power input shaft 1 and gear ring 3 to be separated from each other second clutch 2.At this moment, in the planetary gears, housing 6 is static relatively with gear ring 3; Sun gear 8 is a driving wheel, and planet carrier 5 is driven, and power is after sun gear 8 inputs; The rotating speed of gear ring 3 is lower than the rotating speed of sun gear 8; Be arranged on the planet carrier 5 planetary pinion 4 with sun gear 8 engagement in, with gear ring 3 inner mesh, drive planet carrier 5 around the rotational of sun gear 8, promptly realize the driven of planet carrier 5, power exports pto 9 to through planet carrier 5 the most at last.At this moment; Velocity ratio between power input shaft 1 and the pto 9 equals the rotating speed of the rotating speed of sun gear 8 divided by planet carrier 5, and since the rotating speed of planet carrier 5 far below the rotating speed of sun gear 8, so velocity ratio is greater than one; Can realize slowing down in the same way; Under the constant situation of motor output torque, can be to the bigger driving torque of pto 9 outputs, thus vehicle start is more prone to.
When vehicle is accomplished torque demand after the higher acceleration starting stage; Pto 9 rotating speeds of automobile are higher; In order to prevent motor, at this moment, need to reduce the velocity ratio between power input shaft 1 and the pto 9 with underloading and the too high state work of rotating speed; Concrete mode is following: at first through first clutch 7 housing 6 and gear ring 3 are separated from each other, through second clutch 2 power input shaft 1 and gear ring 3 are combined into one.At this moment; The rotating speed of sun gear 8 is identical with gear ring 3 rotating speeds; Planetary pinion 4 is static relatively with sun gear 8 and gear ring 3, and planetary pinion 4 drive planet carriers 5 and sun gear 8, gear ring 3 are in the same way, speed is rotated together, and the velocity ratio between power input shaft 1 and the pto 9 is one.
When automobile need quicken or slow down, can switch the working state of first clutch 7 and second clutch 2 as required or, all can play the effect of regulating power input shaft 1 rotating speed through regulating the voltage of motor.
When parking of automobile, the power supply of cut-out motor is also extremely zero with the rotational speed regulation of power input shaft 1, at this moment, and power cut.
When rolling-back of car, regulate the motor counter-rotating, turning to of promptly changeable power input shaft 1, pto 9 realizes reversing.
In the present embodiment; Be with embodiment's 1 difference: be provided with second clutch 2; Said second clutch makes pto combine with gear ring or separates; Second clutch 2 is fixedly set between pto 9 and the gear ring 3, and pto 9 is combined with gear ring 3 or separates through being arranged at second clutch 2 on the pto 9.
Accomplish when automobile after the acceleration starting stage of high moment of torsion; In order to prevent that motor is with underloading and the too high state work of rotating speed; At first housing 6 and gear ring 3 are separated from each other through first clutch 7; Be combined into one with gear ring 3 through output power axle 9 of second clutch 2 then, realize that pto 9 and gear ring 3 rotate ratio transmissions such as realization in the same way with speed.
All the other structures and the method for operation see also embodiment 1.
The utility model is not limited to aforesaid embodiment.The utility model expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (8)
1. electric automobile gear transmission device; Comprise housing; And the power input shaft and the pto that are arranged at the housing two ends, it is characterized in that: be coaxially arranged with sun gear and gear ring on the said power input shaft, said sun gear is fixedly connected with power input shaft; Said gear ring is movably set on the power input shaft; Said pto is fixedly connected with planet carrier, and said planet carrier is provided with several planetary pinions, and said planetary pinion is arranged between gear ring and the sun gear and with gear ring and sun gear and meshes simultaneously; Be provided with first clutch between said housing and the gear ring, said first clutch makes housing combine with gear ring or separates, and is provided with second clutch between said power input shaft and the gear ring, and said second clutch makes power input shaft combine with gear ring or separates.
2. electric automobile gear transmission device according to claim 1 is characterized in that: said first clutch is an electric control clutch.
3. electric automobile gear transmission device according to claim 2 is characterized in that: said second clutch is a magnetic clutch.
4. according to arbitrary described electric automobile gear transmission device in the claim 1 to 3, it is characterized in that: when said first clutch combined housing and gear ring, said second clutch made power input shaft separate with gear ring; When said first clutch made housing separate with gear ring, said second clutch combined power input shaft and gear ring.
5. electric automobile gear transmission device; Comprise housing; And the power input shaft and the pto that are arranged at the housing two ends, it is characterized in that: be coaxially arranged with sun gear and gear ring on the said power input shaft, said sun gear is fixedly connected with power input shaft; Said gear ring is movably set on the power input shaft; Said pto is fixedly connected with planet carrier, and said planet carrier is provided with several planetary pinions, and said planetary pinion is arranged between gear ring and the sun gear and with gear ring and sun gear and meshes simultaneously; Be provided with first clutch between said housing and the gear ring, said first clutch makes housing combine with gear ring or separates, and is provided with second clutch between said pto and the gear ring, and said second clutch makes pto combine with gear ring or separates.
6. electric automobile gear transmission device according to claim 5 is characterized in that: said first clutch is an electric control clutch.
7. electric automobile gear transmission device according to claim 6 is characterized in that: said second clutch is a magnetic clutch.
8. according to arbitrary described electric automobile gear transmission device in the claim 5 to 7, it is characterized in that: when said first clutch combined housing and gear ring, said second clutch made pto separate with gear ring; When said first clutch made housing separate with gear ring, said second clutch combined pto and gear ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220311122 CN202628961U (en) | 2012-06-29 | 2012-06-29 | Variable-speed drive device of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220311122 CN202628961U (en) | 2012-06-29 | 2012-06-29 | Variable-speed drive device of electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202628961U true CN202628961U (en) | 2012-12-26 |
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ID=47382166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220311122 Expired - Lifetime CN202628961U (en) | 2012-06-29 | 2012-06-29 | Variable-speed drive device of electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202628961U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705457A (en) * | 2012-06-29 | 2012-10-03 | 成都凯迈科技有限公司 | Variable-speed transmission device for electric automobile |
| CN106931103A (en) * | 2015-12-31 | 2017-07-07 | 重庆硬核派传动科技有限公司 | One kind uses planetary three-speed gear |
| CN113551013A (en) * | 2021-08-25 | 2021-10-26 | 富勒传动设备盐城有限公司 | Stepless speed change transmission speed reducer |
-
2012
- 2012-06-29 CN CN 201220311122 patent/CN202628961U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705457A (en) * | 2012-06-29 | 2012-10-03 | 成都凯迈科技有限公司 | Variable-speed transmission device for electric automobile |
| CN106931103A (en) * | 2015-12-31 | 2017-07-07 | 重庆硬核派传动科技有限公司 | One kind uses planetary three-speed gear |
| CN113551013A (en) * | 2021-08-25 | 2021-10-26 | 富勒传动设备盐城有限公司 | Stepless speed change transmission speed reducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121226 |
|
| CX01 | Expiry of patent term |