CN104482137A - Double-clutch transmission and differential assembly - Google Patents
Double-clutch transmission and differential assembly Download PDFInfo
- Publication number
- CN104482137A CN104482137A CN201410803230.1A CN201410803230A CN104482137A CN 104482137 A CN104482137 A CN 104482137A CN 201410803230 A CN201410803230 A CN 201410803230A CN 104482137 A CN104482137 A CN 104482137A
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- Prior art keywords
- clutch
- platen
- heart
- speed
- differential assembly
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/10—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts with one or more one-way clutches as an essential feature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/037—Gearboxes for accommodating differential gearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention discloses a double-clutch transmission and differential assembly. The assembly comprises double clutches and a transmission and differential component, wherein the double clutches comprise a first clutch, a second clutch and a clutch operation mechanism; the first clutch and the second clutch are alternately joined or separated through the control of the clutch operation mechanism. The double-clutch transmission and differential assembly has the characteristics of low cost, small size and light weight, the application range of the double-clutch transmission and differential assembly can be greatly enhanced, and the double-clutch transmission and differential assembly is suitable for being carried on small-sized vehicles under serious cost control such as electric vehicles.
Description
Technical field
The present invention relates to automotive component field, specifically a kind of two clutch speed-changing differential assembly.
Background technique
Two clutch gearbox combines the advantage of manual transmission and automatic transmission case, do not use torque-converters, then clutch is overlapped in employing two, by the mutual alternation of two cover clutches, arrive the effect of gapless gearshift, not only make the driving variable of automobile obtain simpler, but also effectively improve the travelling comfort of automobile, power character and Security.Double clutch is responsible for gear switch, starting controls, transmission of power, torsion damping, the important function such as overload protection, it is the critical component of dual-clutch transmission system, existing double clutch applies to medium-to-high grade passenger car usually, two clutch packs of this double clutch are respectively by two independently electric & hydraulic control Systematical control, thus control the switching of double clutch two different gears respectively, this automatic control system complex structure, cost is higher, therefore, it is narrow that the existing pair of clutch speed-changing differential assembly is difficult to apply to the spaces such as electric motor car, the vehicle that cost space is less.
Therefore, for overcoming the above problems, need a kind of only need a set of operating mechanism can to two in double clutch independently clutch pack control, its structure simplified greatly and the low two clutch speed-changing differential assemblies of cost.
Summary of the invention
In view of this, the object of the invention is to overcome defect of the prior art, two clutch speed-changing differential assemblies that a kind of structure is simple, transmission efficiency is high, cost is low are provided.
Of the present invention pair of clutch speed-changing differential assembly, comprise double clutch and Transaxle assembly, described double clutch comprises first clutch, second clutch and clutch operation, and described first clutch controls alternately to engage or be separated by this clutch operation with second clutch;
Further, described clutch operation comprises the first platen and the second platen, has and be linked and engage for driving first clutch and second clutch to replace or be separated between the first platen and the second platen;
Further, described first clutch and second clutch are friction plate clutch, second platen is provided with the pretightening force that second clutch is engaged, and the first platen can overcome this pretightening force and be formed with the second platen and link and second clutch be separated and first clutch is engaged;
Further, described clutch operation also comprises the clutch heart cover be equipped with the input end transmission of double clutch, and the first platen and the second platen all overlap with the mode of the circumferencial direction transmission that slides axially and the clutch heart and to be connected and pretightening force is arranged at the clutch heart overlaps between the first platen or the clutch heart overlaps between the second platen;
Further, described second platen is provided with guide pillar vertically, and guide pillar is fixedly connected with the first platen through clutch heart cover, and pretightening force comprises and is arranged at the clutch heart and overlaps between the first platen or the clutch heart overlaps spring I between the second platen;
Further, described second platen is provided with guide pillar vertically, guide pillar through clutch heart cover and the second platen be fixedly connected on a push-plate, pretightening force comprise the spring I that is arranged between the first platen and push-plate and be arranged at the first platen and the clutch heart overlap between spring II;
Further, described guide pillar is provided with the limited step for carrying out axial limiting to the first platen, and the elasticity coefficient of spring I is greater than the elasticity coefficient of spring II;
Further, described first clutch comprises the first movable friction plate being fixed on clutch heart cover and the first static friction sheet coordinated with the first movable friction plate, and second clutch comprises the second movable friction plate being fixed on clutch heart cover and the second static friction sheet coordinated with the second movable friction plate; Described first clutch also comprises the first clutch shell be fixedly connected with the first static friction sheet, second clutch also comprises the second clutch shell be fixedly connected with the second static friction sheet, and first clutch shell and second clutch shell are coaxially arranged and first clutch shell is contained within second clutch shell;
Further, described Transaxle assembly also comprises speed changer and differential mechanism, described speed changer comprises input shaft and output shaft, input shaft is rotatably equipped with driving gear I and driving gear II, output shaft transmission is equipped with driven gear I and driven gear II, the input end of input shaft and clutch is in transmission connection, and driving gear I and driving gear II are in transmission connection with first clutch shell and second clutch shell respectively;
Further, described differential mechanism comprises differential casing and differential gear assembly and differential casing transmission is equipped with differential gear for coordinating with output shaft transmission.
The invention has the beneficial effects as follows: of the present invention pair of clutch speed-changing differential assembly, clutch operation controls first clutch and alternately engages with second clutch or be separated, therefore, the control of this double clutch can adopt the automatic control system of simple structure, even Non-follow control can be realized, therefore of the present invention pair of clutch speed-changing differential assembly, at the bottom of cost, volume is little, lightweight, greatly can strengthen the Applicable scope of two clutch, make it be applicable to being equipped on the vehicle that electric motor car etc. is small-sized, cost control is strict.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is structural representation of the present invention.
Embodiment
Fig. 1 is structural representation of the present invention, as shown in the figure, two clutch speed-changing differential assemblies of the present embodiment, comprise double clutch and Transaxle assembly, double clutch comprises first clutch, second clutch and clutch operation, described first clutch controls alternately to engage or be separated by this clutch operation with second clutch, therefore, the control of this pair of clutch speed-changing differential assembly can adopt the automatic control system of simple structure, even adopt Non-follow control, the double clutch of the present embodiment, at the bottom of its cost, volume is little, lightweight, greatly can strengthen the Applicable scope of two clutch, it is made to be applicable to being equipped on electric motor car etc. small-sized, the vehicle that cost control is strict,
In the present embodiment, described clutch operation comprises the first platen 13 and the second platen 7, have between first platen 13 and the second platen 7 and be linked and engage for driving first clutch and second clutch to replace or be separated, first clutch and second clutch can adopt all clutch configurations existing, as friction plate clutch, jaw clutch etc., and make first clutch with second clutch joint accordingly by the first platen 13 and the second platen 7 or be separated, can adopt between first platen 13 and the second platen 7 be fixedly connected with or elasticity connect thus formed be linked, and then while the first platen 13 compresses, second platen 7 is separated, same, when the second platen 7 compresses, the first platen 13 is separated, thus realizes first clutch and alternately engage with second clutch or be separated.
In the present embodiment, described first clutch and second clutch are friction plate clutch, second platen 7 is provided with the pretightening force that second clutch is engaged, first platen 13 can overcome this pretightening force and be formed with the second platen 7 and link and second clutch be separated and first clutch is engaged, the Engage and disengage of friction plate clutch is by compressing or the realization of disengaging friction sheet, described pretightening force can adopt the elastic elements such as spring to realize, thus second clutch is often engaged, first clutch is often separated, and when promotion the first platen 13, first platen 13 can overcome this pretightening force and compress first clutch, simultaneously, be linked owing to having between the first platen 13 and the second platen 7, realization is separated by the second platen 7, and then finally realize first clutch joint, first clutch is separated.
In the present embodiment, described clutch operation also comprise the clutch heart be equipped with the input end transmission of double clutch overlap the 5, first platen 13 and the second platen 7 all with the mode of the circumferencial direction transmission that slides axially and the clutch heart overlap 5 be connected and pretightening force be arranged at the clutch heart overlap 5 and first between platen 13 or the clutch heart overlap 5 and second between platen 7, the clutch heart overlaps 5 external cylindrical surfaces and is circumferentially provided with spacer ring 10, first platen 13 and the second platen 7 are respectively in spacer ring 10 both sides vertically, first clutch is between spacer ring 10 and the first platen 13, second clutch is between spacer ring 10 and the second platen 7, because clutch heart cover 5 and the first platen 13 and the second platen 7 are in transmission connection, therefore, first platen 13 and the second platen 7 will overlap 5 with the clutch heart, elastic force can adopt Compress Spring or extension spring, making the secondth platen 7 press to spacer ring 10 all the time when not being subject to external forces makes second clutch often engage.
In the present embodiment, described second platen 7 is provided with guide pillar 16 vertically, guide pillar 16 can be uniformly distributed multiple along the first platen 13 circumference, clutch heart cover 5 is correspondingly provided with via hole, guide pillar 16 is fixedly connected with (the first platen 13 through clutch heart cover 5 with the first platen 13, this fit form of the second platen 7 is not shown in figures), pretightening force comprise be arranged at clutch heart cover 5 and first between platen 13 or the clutch heart overlap 5 and second springs I 17 between platen 7, if spring I 17 adopts Compress Spring, then spring I 17 should be arranged between clutch heart cover 5 and the first platen 13, if spring I 17 adopts extension spring, then spring I 17 should be arranged between clutch heart cover 5 and the second platen 7.
In the present embodiment, first platen 13, following fit form can also be adopted: the second platen 7 is provided with guide pillar 16 vertically between second platen 7 and clutch heart cover 5, guide pillar 16 is uniformly distributed multiple along the first platen 13 circumference, guide pillar 16 is through clutch heart cover 5 and the second platen 7 and be fixedly connected on a push-plate 14, pretightening force comprises the spring I 17 that is arranged between the first platen 13 and push-plate 14 and is arranged at the first platen 13 and the clutch heart overlaps spring II 19 between 5, spring I 17 and spring II 19 are Compress Spring herein, when push-plate 14 is not by external forces effect, push-plate 14 will overlap 5 away from the clutch heart and move under spring I 17 with the acting in conjunction of spring II 19, and then drive the second platen 7 to press to spacer ring 10 second clutch is often engaged, first platen 13 also will, away from spacer ring 10, make first clutch often be separated at spring I 17 and the acting in conjunction of spring II 19, when push-plate 14 be subject to external forces make its to the clutch heart overlap 5 sides move time, the second platen 7 will move away from spacer ring 10, and second clutch is separated, and spring II 19 is compressed to the elastic force making the first platen 13 overcome spring I 17 when pressing to spacer ring 10 side, first clutch will be made to engage, in the present embodiment, push-plate 14 central rotatable connects one and promotes 15, push-plate 14 to-and-fro motion vertically can be promoted by handling distribution 15 movement vertically, thus control being separated and joint of first clutch and second clutch.
In the present embodiment, described guide pillar 16 is provided with the limited step 18 for carrying out axial limiting to the first platen 13, the elasticity coefficient of spring I 17 is greater than the elasticity coefficient of spring II 19, this limited step 18 can ensure when second clutch engages, second platen 7 is away from spacer ring 10, while guaranteeing that first clutch engages, second clutch is separated; On the other hand, the elasticity coefficient of spring I 17 is greater than the elasticity coefficient of spring II 19, when push-plate 14 push to the clutch heart overlap 5 time, ensure that the pressure of spring I 17 to the first platen 13 can make its elastic force overcoming rapidly spring II 19 make the first platen 13 compress first clutch and make it engage.
In the present embodiment, described first clutch comprises the first movable friction plate 11 being fixed on clutch heart cover 5 and the first static friction sheet 12 coordinated with the first movable friction plate 11, second clutch comprises the second movable friction plate 8 being fixed on clutch heart cover 5 and the second static friction sheet 9 coordinated with the second movable friction plate 8, first platen 13 can move and then compress the first movable friction plate 11 vertically with the first static friction sheet 12 makes it engage, because the first movable friction plate 11 is fixed on clutch heart cover 5, and clutch heart cover 5 is in transmission connection with clutch input, therefore, power can be passed to the first static friction sheet 12 by input end after compressing by the first platen 13, final output, second platen 7 is as the same, again be not repeated, described first clutch also comprises the first clutch shell 6 be fixedly connected with the first static friction sheet 12, second clutch also comprises the second clutch shell 4 be fixedly connected with the second static friction sheet 9, first clutch shell 6 and second clutch shell 4 be coaxial to be arranged and first clutch shell 6 is contained within second clutch shell 4, after first clutch engages, first clutch shell 6 will overlap 5 synchronous axial system with the clutch heart, first clutch shell 6 can be in transmission connection with output terminal, and then Driving Torque, equally, also by second clutch shell 4 Driving Torque after second clutch engages, again be not repeated, first clutch shell 6 and second clutch shell 4 be coaxial to be arranged and first clutch shell 6 is contained within second clutch shell 4, this arrangement can significantly improve the compactedness of double clutch construction.
In the present embodiment, described Transaxle assembly also comprises speed changer and differential mechanism, described speed changer comprises input shaft 1 and output shaft 22, input shaft 1 is rotatably equipped with driving gear I 3 and driving gear II 2, output shaft 22 transmission is equipped with driven gear I 20 and driven gear II 21, input shaft 1 is in transmission connection with the input end of clutch, driving gear I 3 and driving gear II 2 are in transmission connection with first clutch shell 6 and second clutch shell 4 respectively, when first clutch engages, driving gear I 3 and input shaft 1 are in transmission connection, now, transmission is engaged each other by driving gear I 3 and driven gear I 20 between input shaft 1 and output shaft 22, when second clutch engages, driving gear II 2 and input shaft 1 are in transmission connection, now, transmission is engaged each other by driving gear II 2 and driven gear II 21 between input shaft 1 and output shaft 22, thus realize gearshift.
In the present embodiment, described differential mechanism comprises differential casing 24 and differential gear assembly and the differential gear 23 that differential casing transmission is equipped with for coordinating with output shaft transmission outputs power to semiaxis eventually through the sun gear 25 in differential gear assembly.
What finally illustrate is, above embodiment is only in order to illustrate technological scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technological scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (10)
1. a two clutch speed-changing differential assembly, it is characterized in that: comprise double clutch and Transaxle assembly, described double clutch comprises first clutch, second clutch and clutch operation, and described first clutch controls alternately to engage or be separated by this clutch operation with second clutch.
2. according to claim 1 pair of clutch speed-changing differential assembly, it is characterized in that: described clutch operation comprises the first platen and the second platen having between described first platen and the second platen and be linked and engage for driving first clutch and second clutch to replace or be separated.
3. according to claim 2 pair of clutch speed-changing differential assembly, it is characterized in that: described first clutch and second clutch are friction plate clutch, second platen is provided with the pretightening force that second clutch is engaged, and the first platen can overcome this pretightening force and be formed with the second platen and link and second clutch be separated and first clutch is engaged.
4. according to claim 3 pair of clutch speed-changing differential assembly, it is characterized in that: described clutch operation also comprises the clutch heart cover be equipped with the input end transmission of double clutch, described first platen and the second platen all overlap with the mode of the circumferencial direction transmission that slides axially and the clutch heart and to be connected and described pretightening force is arranged at the clutch heart overlaps between the first platen or the clutch heart overlaps between the second platen.
5. according to claim 4 pair of clutch speed-changing differential assembly, it is characterized in that: described second platen is provided with guide pillar vertically, described guide pillar is fixedly connected with the first platen through clutch heart cover, and described pretightening force comprises and is arranged at the clutch heart and overlaps between the first platen or the clutch heart overlaps spring I between the second platen.
6. according to claim 4 pair of clutch speed-changing differential assembly, is characterized in that: described second platen is provided with guide pillar vertically, and described guide pillar overlaps with the second platen through the clutch heart and is fixedly connected on a push-plate; Described pretightening force comprise the spring I that is arranged between the first platen and push-plate and be arranged at the first platen and the clutch heart overlap between spring II.
7. according to claim 6 pair of clutch speed-changing differential assembly, is characterized in that: described guide pillar is provided with the limited step for carrying out axial limiting to the first platen, and the elasticity coefficient of described spring I is greater than the elasticity coefficient of spring II.
8. according to claim 4 pair of clutch speed-changing differential assembly, is characterized in that: described first clutch comprises the first movable friction plate being fixed on clutch heart cover and the first static friction sheet coordinated with the first movable friction plate; Described second clutch comprises the second movable friction plate being fixed on clutch heart cover and the second static friction sheet coordinated with the second movable friction plate; Described first clutch also comprises the first clutch shell be fixedly connected with the first static friction sheet; Described second clutch also comprises the second clutch shell be fixedly connected with the second static friction sheet; Described first clutch shell and second clutch shell are coaxially arranged and first clutch shell is contained within second clutch shell.
9. according to claim 8 pair of clutch speed-changing differential assembly, it is characterized in that: described Transaxle assembly also comprises speed changer and differential mechanism, described speed changer comprises input shaft and output shaft, described input shaft is rotatably equipped with driving gear I and driving gear II, and described output shaft transmission is equipped with driven gear I and driven gear II; The input end of described input shaft and double clutch is in transmission connection; Described driving gear I and driving gear II are in transmission connection with first clutch shell and second clutch shell respectively.
10. according to claim 9 pair of clutch speed-changing differential assembly, is characterized in that: described differential mechanism comprises differential casing and differential gear assembly and differential casing transmission is equipped with differential gear for coordinating with output shaft transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410803230.1A CN104482137B (en) | 2014-12-18 | 2014-12-18 | Double clutch speed-changing differential assemblies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410803230.1A CN104482137B (en) | 2014-12-18 | 2014-12-18 | Double clutch speed-changing differential assemblies |
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| Publication Number | Publication Date |
|---|---|
| CN104482137A true CN104482137A (en) | 2015-04-01 |
| CN104482137B CN104482137B (en) | 2017-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410803230.1A Active CN104482137B (en) | 2014-12-18 | 2014-12-18 | Double clutch speed-changing differential assemblies |
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| CN (1) | CN104482137B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546057A (en) * | 2016-02-04 | 2016-05-04 | 重庆青山工业有限责任公司 | Transmission system of two-gear pure electric double-clutch transmission |
| CN106979304A (en) * | 2016-01-15 | 2017-07-25 | 财团法人工业技术研究院 | Two-speed gearbox with double clutches for electric vehicle |
| CN107120392A (en) * | 2017-06-24 | 2017-09-01 | 重庆隆旺机电有限责任公司 | Double-clutch speed changer |
| CN107246445A (en) * | 2017-06-24 | 2017-10-13 | 重庆隆旺机电有限责任公司 | Half-clutching type double clutch |
| CN109723785A (en) * | 2019-03-15 | 2019-05-07 | 重庆青山工业有限责任公司 | A kind of two speed transmission based on pure electric automobile |
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| US3369639A (en) * | 1966-06-06 | 1968-02-20 | Twin Disc Clutch Co | Fluid actuated clutch with modulated exhaust valve |
| GB1217123A (en) * | 1968-01-19 | 1970-12-31 | Twin Disc Inc | Hydraulically operated friction clutch of the dual actuating chamber type having a sequencing valve |
| US4044869A (en) * | 1974-06-28 | 1977-08-30 | Motoren- Und Turbinen-Union Friedrichshafen Gmbh | Release stop for disc clutch |
| CA1182060A (en) * | 1981-04-14 | 1985-02-05 | Allis-Chalmers Corporation | Hydraulic and spring actuated double clutch |
| US6488138B1 (en) * | 1998-07-10 | 2002-12-03 | Zf Friedrichshafen Ag | Multi-disk clutch in a power split transmission |
| KR20120138193A (en) * | 2011-06-14 | 2012-12-24 | 현대자동차주식회사 | Two-step transmission unit for electric vehicle |
| DE102013204974A1 (en) * | 2012-04-12 | 2013-10-17 | Schaeffler Technologies AG & Co. KG | Dual clutch for connecting e.g. combustion engine, with dual clutch transmission of powertrain of motor car, has sealing carriers axially supported at support element that is axially fixed at rotor without any clearance |
| CN204327880U (en) * | 2014-12-18 | 2015-05-13 | 重庆隆旺机电有限责任公司 | The two clutch speed-changing differential mechanism of linking type |
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2014
- 2014-12-18 CN CN201410803230.1A patent/CN104482137B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3369639A (en) * | 1966-06-06 | 1968-02-20 | Twin Disc Clutch Co | Fluid actuated clutch with modulated exhaust valve |
| GB1217123A (en) * | 1968-01-19 | 1970-12-31 | Twin Disc Inc | Hydraulically operated friction clutch of the dual actuating chamber type having a sequencing valve |
| US4044869A (en) * | 1974-06-28 | 1977-08-30 | Motoren- Und Turbinen-Union Friedrichshafen Gmbh | Release stop for disc clutch |
| CA1182060A (en) * | 1981-04-14 | 1985-02-05 | Allis-Chalmers Corporation | Hydraulic and spring actuated double clutch |
| US6488138B1 (en) * | 1998-07-10 | 2002-12-03 | Zf Friedrichshafen Ag | Multi-disk clutch in a power split transmission |
| KR20120138193A (en) * | 2011-06-14 | 2012-12-24 | 현대자동차주식회사 | Two-step transmission unit for electric vehicle |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979304A (en) * | 2016-01-15 | 2017-07-25 | 财团法人工业技术研究院 | Two-speed gearbox with double clutches for electric vehicle |
| US10451146B2 (en) | 2016-01-15 | 2019-10-22 | Industrial Technology Research Institute | Two-speed transmission having two clutches for electric vehicle |
| CN105546057A (en) * | 2016-02-04 | 2016-05-04 | 重庆青山工业有限责任公司 | Transmission system of two-gear pure electric double-clutch transmission |
| CN107120392A (en) * | 2017-06-24 | 2017-09-01 | 重庆隆旺机电有限责任公司 | Double-clutch speed changer |
| CN107246445A (en) * | 2017-06-24 | 2017-10-13 | 重庆隆旺机电有限责任公司 | Half-clutching type double clutch |
| CN109723785A (en) * | 2019-03-15 | 2019-05-07 | 重庆青山工业有限责任公司 | A kind of two speed transmission based on pure electric automobile |
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| Publication number | Publication date |
|---|---|
| CN104482137B (en) | 2017-06-23 |
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