CN105329080A - Electrically driven rear axle assembly for electric vehicle - Google Patents
Electrically driven rear axle assembly for electric vehicle Download PDFInfo
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- CN105329080A CN105329080A CN201510814155.3A CN201510814155A CN105329080A CN 105329080 A CN105329080 A CN 105329080A CN 201510814155 A CN201510814155 A CN 201510814155A CN 105329080 A CN105329080 A CN 105329080A
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- back axle
- motor
- rear axle
- diff
- electric vehicle
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Abstract
The invention provides an electrically driven rear axle assembly for an electric vehicle. The electrically driven rear axle assembly for the electric vehicle comprises a rear axle sub assembly and a secondary cylindrical gear transmission; a differential mechanism of the rear axle sub assembly does not contain a differential mechanism driving bevel gear and a driven bevel gear; an outer shell in the differential mechanism is fixedly connected with a driven cylindrical gear; an output gear of the secondary cylindrical gear transmission is directly meshed with the driven cylindrical gear; the secondary cylindrical gear transmission is driven by virtue of a first driving motor and a second auxiliary motor, and a hub of the rear axle sub assembly is fixedly connected with a wheel-side reducer. The electrically driven rear axle assembly for the electric vehicle has the advantages that the structure of the differential mechanism is optimized, and power is output to the differential mechanism in a cylindrical gear drive manner, so that transmission efficiency is improved; large transmission ratio output is realized, and total transmission ratio can be more than 22; two motors are arranged, large torque output is realized without increasing motor power, and transmission efficiency is improved; and the first driving motor and the second auxiliary motor can work simultaneously and also can work alone.
Description
Technical field
The present invention relates to electric automobiles, especially electric vehicle electric drive back axle assembly.
Background technology
In recent years electronlmobil due to its environmental-protecting performance and the development of cheap usage charges rapidly, the back axle manufacture of battery-driven car and demand present fast development trend, two semiaxis that back axle on battery-driven car generally adopts a motor directly to access on diff driving back axle rotate, this back axle is arranged a motor, the use occasion for miniwatt, low moment of torsion can meet the demands substantially; But can not meet the demands on the one hand for the use occasion of superpower, high pulling torque, the moment of torsion transmitted on the other hand and power excessive when motor easily damage.
In recent years, battery-driven car is more and more extensive as the use of goods carrying vehicle, larger power and moment of torsion is needed to export when goods carrying vehicle, for this reason, having occurred the back axle assembly of Dual-motors Driving, is generally that employing two motor reducer assemblies (motor and retarder integrated) access diff and drive two semiaxis on back axle to rotate.
Such as, publication number is that the utility model patent of CN203611711U discloses " Dual-motors Driving motor rear axle ", is exactly to adopt two motor reducer assemblies (motor and retarder integrated) to access diff to drive two semiaxis on back axle to rotate.Although reach the object that larger power and moment of torsion export, 1, its technology realizes than relying on the retarder of motor reducer assembly, total reduction gear ratio is below 10; If want that the reduction ratio by strengthening retarder realizes the increase of total reduction gear ratio, this is unpractical; Because strengthen the reduction ratio of retarder, will certainly strengthen the volume of retarder, the ground Clearance of back axle reduces, and causes back axle to use; 2, when back axle works, two retarders are all in running, and watt loss is large; 3, big speed ratio cannot be realized export.
Current back axle (back axle branch unit) is the General Construction in openly a lot of year: comprise axle housing, the diff of axle housing medium position, two semiaxis, two wheel hubs.
Summary of the invention
The present invention proposes electric vehicle electric drive back axle assembly, adopt two electric-powered source input, realize big speed ratio and export, the basis not increasing power of motor realizes high pulling torque and exports, and improve driving efficiency.
Technical scheme of the present invention is as follows: electric vehicle electric drive back axle assembly, comprises back axle branch unit, secondary cylindrical wheel change-speed box, below the diff of back axle branch unit is defined as " diff ", it is characterized in that:
There is no diff drive bevel gear (little basin angle tooth) in diff, by dynamic bevel gear (large basin angle tooth), the body skin in diff be fixedly connected with a passive cylindrical wheel;
Secondary cylindrical wheel change-speed box is directly fixed on the axle housing of back axle branch unit, and the output gear of secondary cylindrical wheel change-speed box directly engages with passive cylindrical wheel;
On back axle, the both sides of secondary cylindrical wheel change-speed box are respectively arranged with the first active motor, the second helper motor: the first initiatively rotating shaft of motor, the rotating shaft of the second helper motor are connected directly between the two ends of the input shaft of secondary gear change-speed box;
The wheel hub of back axle branch unit is fixedly connected with wheel reduction gear.
Further restriction to technique scheme: a described second helper motor genemotor substitutes; Described genemotor is the motor that current collection moves output, electricity generate function is integrated.
Beneficial effect: the present invention, by optimizing the structure of diff, adopts the mode outputting power of spur gear drive to passing diff, thus improves driving efficiency; The present invention adopts secondary cylindrical wheel change-speed box, the combination of wheel reduction gear realizes big speed ratio and exports, and overall gear ratio can reach more than 22, thus significantly can improve moment of torsion output; Adopt two motor arrangements, the basis not increasing power of motor realizes high pulling torque and exports, and improve driving efficiency; On the other hand, in the electronlmobil starting stage, two motors work simultaneously, and electronlmobil is started to walk smoothly; When electronlmobil is walked, can only make a machine operation by vehicle-mounted central control system; After the second helper motor substitutes by genemotor, during electronlmobil walking, can generate electricity to Vehicular accumulator cell and store.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is fundamental diagram of the present invention.
Detailed description of the invention
As shown in Figure 1, further describe the present invention as follows: electric vehicle electric drive back axle assembly, comprise back axle branch unit 1, secondary cylindrical wheel change-speed box 4, the following diff back axle branch unit is defined as " diff ", there is no diff drive bevel gear (little basin angle tooth) in diff 101, by dynamic bevel gear (large basin angle tooth), the body skin in diff be fixedly connected with a passive cylindrical wheel 6;
Secondary cylindrical wheel change-speed box 4 is directly fixed on the axle housing of back axle branch unit 1, and the output gear 402 of secondary cylindrical wheel change-speed box directly engages with passive cylindrical wheel 6;
The two ends that the both sides of secondary cylindrical wheel change-speed box are respectively arranged with the first initiatively motor 3, second helper motor 5: the first initiatively rotating shaft of motor 3 on back axle, the rotating shaft of the second helper motor 5 is connected directly between the input shaft 401 of secondary gear change-speed box; The wheel hub 103 of back axle branch unit is fixedly connected with wheel reduction gear 2.
As shown in Figure 1, the inner side of wheel hub 103 is provided with drg 104, and he is also a part for back axle branch unit 1.
The second helper motor 5 shown in Fig. 1 can substitute by a genemotor; Described genemotor is the motor that current collection moves output, electricity generate function is integrated, and can realize transmission like this, or generating stores to Vehicular accumulator cell.
As shown in Figure 2, principle of work of the present invention: the first active motor 3, second helper motor 5 inputs to secondary cylindrical wheel change-speed box 4(by secondary cylinder retarder power and is directly fixed on the axle housing of back axle branch unit), then by semiaxis 102, wheel reduction gear 2 to wheel A.
Claims (2)
1. electric vehicle electric drive back axle assembly, comprises back axle branch unit, secondary cylindrical wheel change-speed box, below the diff of back axle branch unit is defined as " diff ", it is characterized in that:
There is no diff drive bevel gear in diff, by dynamic bevel gear, the body skin in diff be fixedly connected with a passive cylindrical wheel;
Secondary cylindrical wheel change-speed box is directly fixed on the axle housing of back axle branch unit, and the output gear of secondary cylindrical wheel change-speed box directly engages with passive cylindrical wheel;
On back axle, the both sides of secondary cylindrical wheel change-speed box are respectively arranged with the first active motor, the second helper motor: the first initiatively rotating shaft of motor, the rotating shaft of the second helper motor are connected directly between the two ends of the input shaft of secondary gear change-speed box;
The wheel hub of back axle branch unit is fixedly connected with wheel reduction gear.
2. electric vehicle electric drive back axle assembly according to claim 1, is characterized in that: a described second helper motor genemotor substitutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510814155.3A CN105329080A (en) | 2015-11-23 | 2015-11-23 | Electrically driven rear axle assembly for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510814155.3A CN105329080A (en) | 2015-11-23 | 2015-11-23 | Electrically driven rear axle assembly for electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105329080A true CN105329080A (en) | 2016-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510814155.3A Pending CN105329080A (en) | 2015-11-23 | 2015-11-23 | Electrically driven rear axle assembly for electric vehicle |
Country Status (1)
| Country | Link |
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| CN (1) | CN105329080A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224471A (en) * | 2016-08-05 | 2016-12-14 | 宋宝玲 | Planet is distributed to dislocation or to coaxial many motor gear box |
| CN107345558A (en) * | 2016-05-06 | 2017-11-14 | 陕西汉德车桥有限公司 | Pure electronic two grades of transaxles and electric car |
| CN107344488A (en) * | 2016-05-06 | 2017-11-14 | 陕西汉德车桥有限公司 | Pure two grades of transaxles of electric commercial vehicle and pure electric commercial vehicle |
| CN107791861A (en) * | 2016-09-07 | 2018-03-13 | 昶洧新能源汽车发展有限公司 | Integrated powertrain system |
| CN109466297A (en) * | 2018-11-30 | 2019-03-15 | 汽解放汽车有限公司 | A kind of double AMT electric drive axle assemblies of center integrated form bi-motor |
| CN109677253A (en) * | 2018-12-19 | 2019-04-26 | 青岛青特众力车桥有限公司 | A kind of integrated form bi-motor mechanical differential electric drive axle |
| CN110143132A (en) * | 2019-06-21 | 2019-08-20 | 湖北三众车桥股份有限公司 | Dual-motors Driving rear axle assy |
| CN111954604A (en) * | 2018-02-19 | 2020-11-17 | 艾里逊变速箱公司 | Axle assembly for frame rail vehicle |
| CN113217601A (en) * | 2021-06-04 | 2021-08-06 | 一汽解放汽车有限公司 | Speed reducer assembly and hybrid drive axle |
| WO2023272582A1 (en) * | 2021-06-30 | 2023-01-05 | 华为数字能源技术有限公司 | Power assembly system and electric vehicle |
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|---|---|---|---|---|
| EP0786365A2 (en) * | 1996-01-24 | 1997-07-30 | Siemens Aktiengesellschaft | Chassis for utility vehicle |
| DE19958403A1 (en) * | 1999-12-03 | 2001-06-07 | Daimler Chrysler Ag | Hybrid drive train for vehicle; has internal combustion engine, electric motors and balancing planetary gear and electric motor to generate torque and compensate jerking movement in crankshaft |
| CN201800514U (en) * | 2010-09-01 | 2011-04-20 | 安徽欧霖机电有限公司 | Dual-motor driving assembly for electric vehicle |
| CN202669483U (en) * | 2012-06-05 | 2013-01-16 | 范兆军 | Dual-motor differential rear axle |
| CN103895482A (en) * | 2012-12-27 | 2014-07-02 | 重庆茂田机械有限公司 | Electric vehicle rear axle powered by two coaxial motors |
| CN104553714A (en) * | 2013-10-29 | 2015-04-29 | 林州市合鑫铸业有限公司 | Double-motor-driving electric vehicle rear axle |
| CN205130896U (en) * | 2015-11-23 | 2016-04-06 | 十堰精密制造有限公司 | Electric drive rear axle assembly for electric motor car |
-
2015
- 2015-11-23 CN CN201510814155.3A patent/CN105329080A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0786365A2 (en) * | 1996-01-24 | 1997-07-30 | Siemens Aktiengesellschaft | Chassis for utility vehicle |
| DE19958403A1 (en) * | 1999-12-03 | 2001-06-07 | Daimler Chrysler Ag | Hybrid drive train for vehicle; has internal combustion engine, electric motors and balancing planetary gear and electric motor to generate torque and compensate jerking movement in crankshaft |
| CN201800514U (en) * | 2010-09-01 | 2011-04-20 | 安徽欧霖机电有限公司 | Dual-motor driving assembly for electric vehicle |
| CN202669483U (en) * | 2012-06-05 | 2013-01-16 | 范兆军 | Dual-motor differential rear axle |
| CN103895482A (en) * | 2012-12-27 | 2014-07-02 | 重庆茂田机械有限公司 | Electric vehicle rear axle powered by two coaxial motors |
| CN104553714A (en) * | 2013-10-29 | 2015-04-29 | 林州市合鑫铸业有限公司 | Double-motor-driving electric vehicle rear axle |
| CN205130896U (en) * | 2015-11-23 | 2016-04-06 | 十堰精密制造有限公司 | Electric drive rear axle assembly for electric motor car |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345558A (en) * | 2016-05-06 | 2017-11-14 | 陕西汉德车桥有限公司 | Pure electronic two grades of transaxles and electric car |
| CN107344488A (en) * | 2016-05-06 | 2017-11-14 | 陕西汉德车桥有限公司 | Pure two grades of transaxles of electric commercial vehicle and pure electric commercial vehicle |
| CN106224471A (en) * | 2016-08-05 | 2016-12-14 | 宋宝玲 | Planet is distributed to dislocation or to coaxial many motor gear box |
| CN107791861A (en) * | 2016-09-07 | 2018-03-13 | 昶洧新能源汽车发展有限公司 | Integrated powertrain system |
| CN111954604A (en) * | 2018-02-19 | 2020-11-17 | 艾里逊变速箱公司 | Axle assembly for frame rail vehicle |
| CN111954604B (en) * | 2018-02-19 | 2023-12-08 | 艾里逊变速箱公司 | Axle assembly for a frame rail vehicle |
| CN109466297B (en) * | 2018-11-30 | 2023-11-21 | 一汽解放汽车有限公司 | Central integrated double-motor double-AMT electric drive axle assembly |
| CN109466297A (en) * | 2018-11-30 | 2019-03-15 | 汽解放汽车有限公司 | A kind of double AMT electric drive axle assemblies of center integrated form bi-motor |
| CN109677253A (en) * | 2018-12-19 | 2019-04-26 | 青岛青特众力车桥有限公司 | A kind of integrated form bi-motor mechanical differential electric drive axle |
| CN110143132A (en) * | 2019-06-21 | 2019-08-20 | 湖北三众车桥股份有限公司 | Dual-motors Driving rear axle assy |
| CN113217601B (en) * | 2021-06-04 | 2022-04-29 | 一汽解放汽车有限公司 | Speed reducer assembly and hybrid drive axle |
| CN113217601A (en) * | 2021-06-04 | 2021-08-06 | 一汽解放汽车有限公司 | Speed reducer assembly and hybrid drive axle |
| WO2023272582A1 (en) * | 2021-06-30 | 2023-01-05 | 华为数字能源技术有限公司 | Power assembly system and electric vehicle |
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Application publication date: 20160217 |