CN202703266U - Power splitting type double-speed electric driving assembly - Google Patents
Power splitting type double-speed electric driving assembly Download PDFInfo
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- CN202703266U CN202703266U CN2012202669327U CN201220266932U CN202703266U CN 202703266 U CN202703266 U CN 202703266U CN 2012202669327 U CN2012202669327 U CN 2012202669327U CN 201220266932 U CN201220266932 U CN 201220266932U CN 202703266 U CN202703266 U CN 202703266U
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Abstract
The utility model provides a power splitting type double-speed electric driving assembly which comprises a motor, a clutch, an overrunning clutch, a power splitting gear transmission device, a two-stage gear main reducer, a differential mechanism and a half-shaft, wherein the boxes, such as, the motor, the power splitting gear transmission device, the two-stage gear main reducer, a half-shaft bearing, and the like, are prepared into an integrated structure; the motor is used for dividing power into two paths of split flows through a central power gear; the clutch is used for controlling the switch-on/off of each path of power; and one transmission ratio is realized by each path of power. A speed switching process of the double-speed electric driving assembly is free from power interruption and impact; the shift stability is excellent; the structure is simple; the transmission efficiency is high; the volume is small; the weight is light; and the cost is low.
Description
Technical field:
The utility model relates to the pure electric automobile field, especially relates to a kind of power dividing type double speed electronlmobil electricity consumption and drives assembly.
Background technology:
Pure electric automobile is outstanding with performances such as energy-conserving and environment-protective, becomes the important vehicle and make it replace gradually orthodox car.For now, most of pure electric automobile power assemblies adopt the drive mechanism of motor+fixed speed ratio retarder+diff, yet, for driving cycles such as the maximum speed that satisfies automobile, anxious acceleration and max. climb slope, the used for pure electric vehicle machine just need to possess the characteristics such as rotation speed change scope large (0-12000rpm), low speed high torque, this demand characteristics can cause problems: cause the power brick discharge peak currents very large, the travelled distance that this will greatly damage the service life of power brick and reduce electronlmobil; Range of motor speeds is large, causes the motor average operating efficiency low; The motor bearing bearing life is short, cost is high; High-speed cruising has brought such as a series of problems such as gear lubrication, bearing lubrication, churning loss, kinetic balance processing, resonance range processing; Motor output end driver pinion quality requirements is high, cost is high; In case when battery supply feed maybe needs to climb long slope, can cause that without the low gear operation outputting power is not enough; Acceleration capability is poor, course continuation mileage is low.Therefore, need to propose a kind of double speed electricity and drive assembly, solve motor low speed high torque demand with low gear, high speed gear solves the problems such as the too high and degree of cyclic irregularity scope of motor speed is large.
The utility model content:
The purpose of this utility model is: provide a kind of power dividing type double speed used for pure electric vehicle to drive assembly, this double speed electricity drives assembly speed handoff procedure power-interruption free, nothing is impacted, the gearshift stationarity is good, simple in structure, driving efficiency is high, volume is little, lightweight, cost is low, reliability is high.Drive assembly with traditional fixed speed ratio electricity and compare, have larger advantage at aspects such as dynamic property, reliability, battery life, course continuation mileage, vibration noise, costs.
Technical solution of the present utility model is:
A kind of power dividing type double speed used for pure electric vehicle drives assembly, comprise that motor, power-transfer clutch, overriding clutch, power dividing gear driving device, secondary gear main reduction gear, diff and semiaxis supporting form, motor is high speed, low speed two-way drive path by the center power gear with dynamic branch, by the break-make of the every road of clutch control power, each road power is realized a transmitting ratio.
During described low speed rotation route work, high-speed clutch and low-speed clutch all are in disengaged position, and power is by the output of power dividing gear driving device, and overriding clutch locking, dynamic assembly are pressed low speed power path ratio transmissions.
During described high-speed drive route work, the high-speed clutch combination, low-speed clutch breaks away from, and power is by the output of power dividing gear driving device, and overriding clutch is surmounted, and dynamic assembly is by high speed power path ratio transmissions.
During described neutral state, high-speed clutch and low-speed clutch all are in disengaged position, and overriding clutch is reversed and surmounts, and dynamic assembly interrupts.
Described reversing gear during state, high-speed clutch disconnects, the low-speed clutch combination, power is by the output of power dividing gear driving device, and dynamic assembly is pressed low speed power path ratio transmissions.
The casings such as described motor, the distinguished and admirable driving device of power, main reduction gear and semiaxis supporting are integrated.
Good effect of the present utility model is:
1, range of motor speeds is compared with fixing reduction ratio, has greatly reduced the motor speed setting range, and its operation average effiiciency is improved.
2, effective reduction of motor speed has alleviated electric machine design pressure, has greatly prolonged bearing life.
3, the motor torque fluctuation range reduces, and has alleviated design and the control presssure of motor, has effectively reduced the peak current intensity of power brick, thereby has improved its discharge time and service life.When vehicle static is started to walk, adopt the bottom gear starting to accelerate, compare with fixing reduction ratio, can reduce by 50% peak current intensity.Especially for the driving cycle of urban district Fraquent start, acceleration and deceleration, and because pure electric automobile travelled distance problem, it only adapts to city ride basically.Thereby, alleviated to a great extent the surge intensity to power brick; In addition, when power brick is in feed condition, can adopt the little electric current driving mode of bottom gear, slowly drive to the battery-charging station place.
4, reduce final driver ratio, improved its driving efficiency.This be because, the high speed gear period of service ratio of dual drive probably is 80%, its high speed gear efficient takes full advantage of the high characteristics of high speed gear efficient near 99%.Reduced simultaneously the requirement to the gear quality.
The problem that has produced when 5, having solved preferably a series of high-speed cruising such as gear lubrication, noise, kinetic balance, bearing lubrication and resonance.
6, neutral has been cut off the power between motor and driving vehicle, when needs slide, and owing to rotor remains static, thereby, prolonged and slided mileage.
7, when decelerating and braking energy reclaims, when the initial deceleration speed of a motor vehicle is higher, can adopt direct gear brake snub recuperated energy; When the speed of a motor vehicle is low, can adopt bottom gear brake snub recuperated energy (utilizing the large characteristics of over-speed gear ratio), improved the decelerating and braking energy percent recovery.
8, reverse gear adopts low gear, and steadily safety meets the fast requirement of 20% the highest reversing.
9, shift process power-interruption free, without impacting, reliability is high, and ride comfort is good.
Description of drawings:
Fig. 1 is the utility model structural representation and practical application schematic diagram.
The specific embodiment:
For the ease of understanding the utility model, provide specific embodiment below in conjunction with description of drawings, the utility model is further set forth explanation.Its effect is understood to be further concrete elaboration the of the present utility model, and is not that the utility model is consisted of any type of restriction.That need further statement is the person of ordinary skill in the field, can also make according to the utility model the variation of various ways, all falls into protection domain of the present utility model.
Several mode expansion explanations such as the low gear when now travelling according to pure electric automobile as shown in Figure 1,, high speed gear, neutral gear, reverse gear, the recovery of electric braking energy.
High-speed clutch rotating plate 9 and high-speed clutch driven disc 10 form power-transfer clutch C1, and low-speed clutch rotating plate 35 and low-speed clutch driven disc 37 form power-transfer clutch C2; Gear 5, gear 6, gear 7, gear 11, gear 14 and gear 38 consist of torque-splitting transmission; Gear 16, gear 19, gear 21 and gear 22 consist of secondary gear main reduction gear (also can directly adopt gear 16 and gear 22 as the single gear main reduction gear).Gear 6 and electric machine main shaft divide two-way transmission with gear 5 and gear 7 engagements with power by spline joint, and the transmitting ratio of gear 6 and gear 5 is less than the transmitting ratio of gear 6 with gear 7, thus formation high-speed drive path and low speed rotation path.Gear 14 is connected with Driven Gear of Final Reduction Gear (1) 16 by castellated shaft, and meshes the power of accepting from the two with gear 11 and gear 38 respectively.Driven Gear of Final Reduction Gear (1) 22 is connected with differential casing, and right axle shaft finishing bevel gear cuter 25 passes through spline joint with right axle shaft 23, and left half axle finishing bevel gear cuter 27 passes through spline joint with left half axle 30.The low speed gear 38 that confluxes links to each other with low speed kinetic current axle 39 by overriding clutch, also links to each other with low-speed clutch driven disc 35 simultaneously.
Neutral mode: when power-transfer clutch C1 and power-transfer clutch C2 are in disengaged position; when motor was in stopped status, dynamic assembly was in the power interruption state, at this moment; if vehicle is in driving process overriding clutch 34 and is reversed and surmounts, dynamic assembly also is in the power interruption state.
The low gear pattern: power-transfer clutch C1 and power-transfer clutch C2 are in disengaged position, motor 1 passes to power output center gear 14 with power by low speed shunting gear 7, the low speed gear 38 that confluxes by power input sun gear 6, at this moment, overriding clutch 34 lockings, gear 14 to the secondary main reduction gear, passes to left and right sides semiaxis through diff with transmission of power; Because power-transfer clutch C1 is in released state, therefore the high speed power path is in interruption status, dynamic assembly is pressed low speed power path ratio transmissions.
High speed gear pattern: power-transfer clutch C1 combination, power-transfer clutch C2 disconnects, motor 1 by power input sun gear 6 with power by shunt at a high speed gear 5, the gear 11 that confluxes passes to power output center gear 14 at a high speed, at this moment, the rotating speed of gear 38 is higher than low speed kinetic current axle 39 because low speed confluxes, overriding clutch 34 is surmounted, and gear 14 to the secondary main reduction gear, passes to left and right sides semiaxis through diff with transmission of power; Because power-transfer clutch C2 is in and separates and overriding clutch 34 is in and surmounts state, therefore the low speed power path is in interruption status, dynamic assembly is pressed high speed power path ratio transmissions.
Low speed-high-speed gear-shifting process: because overriding clutch locking transfer motion power is adopted in the low gear path, when power-transfer clutch C1 enters cohesive process, only have when the conflux rotating speed of gear 38 of low speed and be higher than low speed kinetic current axle 39, overriding clutch 34 just can be surmounted, and in the power-transfer clutch C1 cohesive process, power on the sun gear 14 can't be interrupted, therefore nothing is impacted power-interruption free in the shift process.
Reverse gear mode: during reverse gear, power-transfer clutch C1 disconnects, power-transfer clutch C2 combination, motor 1 passes to power output center gear 14 with power by low speed shunting gear 7, the low speed gear 38 that confluxes by power input sun gear 6, at this moment, conflux gear 38 and low speed kinetic current axle 39 of low speed is combined by power-transfer clutch C2, and gear 14 to the secondary main reduction gear, passes to left and right sides semiaxis through diff with transmission of power; Because power-transfer clutch C1 is in released state, therefore the high speed power path is in interruption status, dynamic assembly is pressed low speed power path ratio transmissions.
Double speed electric braking energy take-back model: when the speed of a motor vehicle is higher, power-transfer clutch C1 combination, power-transfer clutch C2 disconnects, wheel passes to the secondary main reduction gear with power through left and right sides semiaxis and diff, and through power output center gear 14 with this power by the gear 11 that confluxes at a high speed, shunt gear 5 and power input sun gear 6 at a high speed and pass to motor 1, carry out reverse speedup transmission by the high speed gear transmitting ratio this moment; When the speed of a motor vehicle is low, power-transfer clutch C1 disconnects, power-transfer clutch C2 combination, wheel passes to the secondary main reduction gear with power through left and right sides semiaxis and diff, and through power output center gear 14 this power being passed to motor 1 by conflux gear 38 and power input sun gear 6 of low speed shunting gear 7, low speed, carry out reverse speedup transmission by the low gear transmitting ratio this moment.
Semiaxis and main reduction gear lower box 28 are carried out integrated structure design with motor and dynamic assembly casing 8, help to increase semiaxis support stiffness and assembly structure intensity, and preferably effect is played in the heat radiation of motor.
Claims (6)
1. a power dividing type double speed electricity drives assembly, comprise that motor, power-transfer clutch, overriding clutch, power dividing gear driving device, secondary gear main reduction gear, diff and semiaxis supporting form, it is characterized in that: motor is high speed, low speed two-way drive path by the center power gear with dynamic branch, by the break-make of the every road of clutch control power, each road power is realized a transmitting ratio.
2. driving assembly according to claim 1, it is characterized in that: during described low speed rotation route work, high-speed clutch and low-speed clutch all are in disengaged position, power is by the output of power dividing gear driving device, overriding clutch locking, dynamic assembly are pressed low speed power path ratio transmissions.
3. driving assembly according to claim 1 is characterized in that: during described high-speed drive route work, and the high-speed clutch combination, low-speed clutch breaks away from, power is by the output of power dividing gear driving device, and overriding clutch is surmounted, and dynamic assembly is by high speed power path ratio transmissions.
4. driving assembly according to claim 1, it is characterized in that: during described neutral state, high-speed clutch and low-speed clutch all are in disengaged position, and overriding clutch is reversed and surmounts, and dynamic assembly interrupts.
5. driving assembly according to claim 1 is characterized in that: described reversing gear during state, and high-speed clutch disconnects, the low-speed clutch combination, power is by the output of power dividing gear driving device, and dynamic assembly is pressed low speed power path ratio transmissions.
6. driving assembly according to claim 1, it is characterized in that: the casings such as described motor, the distinguished and admirable driving device of power, main reduction gear and semiaxis supporting are integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202669327U CN202703266U (en) | 2012-06-07 | 2012-06-07 | Power splitting type double-speed electric driving assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202669327U CN202703266U (en) | 2012-06-07 | 2012-06-07 | Power splitting type double-speed electric driving assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202703266U true CN202703266U (en) | 2013-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202669327U Expired - Fee Related CN202703266U (en) | 2012-06-07 | 2012-06-07 | Power splitting type double-speed electric driving assembly |
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| Country | Link |
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| CN (1) | CN202703266U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107225953A (en) * | 2016-03-24 | 2017-10-03 | 爱信精机株式会社 | Motor driver |
| WO2018058867A1 (en) * | 2016-09-28 | 2018-04-05 | 精进电动科技股份有限公司 | Electric drive assembly of vehicle |
| CN108237905A (en) * | 2016-12-27 | 2018-07-03 | 比亚迪股份有限公司 | Drive shaft locking system and power-driven system and vehicle |
| CN109466294A (en) * | 2018-11-30 | 2019-03-15 | 浙江伊控动力***有限公司 | Two gear coaxial power shift power drive systems and process for gear |
-
2012
- 2012-06-07 CN CN2012202669327U patent/CN202703266U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107225953A (en) * | 2016-03-24 | 2017-10-03 | 爱信精机株式会社 | Motor driver |
| WO2018058867A1 (en) * | 2016-09-28 | 2018-04-05 | 精进电动科技股份有限公司 | Electric drive assembly of vehicle |
| US10363804B2 (en) | 2016-09-28 | 2019-07-30 | Jing-Jin Electric Technologies Co., Ltd. | Vehicle electrically driving assembly |
| CN108237905A (en) * | 2016-12-27 | 2018-07-03 | 比亚迪股份有限公司 | Drive shaft locking system and power-driven system and vehicle |
| CN108237905B (en) * | 2016-12-27 | 2020-03-31 | 比亚迪股份有限公司 | Drive shaft locking device, power drive system and vehicle |
| CN109466294A (en) * | 2018-11-30 | 2019-03-15 | 浙江伊控动力***有限公司 | Two gear coaxial power shift power drive systems and process for gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20150607 |
|
| EXPY | Termination of patent right or utility model |