CN112389178A - Axle assembly and vehicle - Google Patents
Axle assembly and vehicle Download PDFInfo
- Publication number
- CN112389178A CN112389178A CN201910765600.XA CN201910765600A CN112389178A CN 112389178 A CN112389178 A CN 112389178A CN 201910765600 A CN201910765600 A CN 201910765600A CN 112389178 A CN112389178 A CN 112389178A
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- Prior art keywords
- motor
- differential
- housing
- electric machine
- vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The invention relates to an electric vehicle and discloses an axle assembly, which comprises a first motor (1) and a second motor assembly (2) connected with the first motor (1); the first electric machine (1) comprises an output shaft (13), the second electric machine assembly (2) comprises a second electric machine and a differential (23), and a shell of the differential (23) is supported on a shell of the second electric machine; the output shaft (13) extends into the second motor and is connected with a shell of the differential (23). In addition, the invention also discloses a vehicle comprising the axle assembly. The invention has compact structure and small occupied space, and is beneficial to the arrangement of the battery pack of the electric vehicle; when any motor fails, the other motor can still drive the whole vehicle to run; the system can adapt to various working conditions with high efficiency, further reduce energy consumption and improve the driving range and the economic performance of the whole vehicle.
Description
Technical Field
The invention relates to an electric vehicle, in particular to an axle assembly. The invention further relates to a vehicle.
Background
With the continuous development of society and vehicle engineering technology, the quantity of automobile reserves is increasing, and great pressure is exerted on the environment and energy. In order to solve the above problems, new energy vehicles will undoubtedly become the development direction of future vehicles.
However, the existing electric automobile is only provided with one motor, and when the motor fails, the whole automobile cannot be normally driven, so that the stability and the safety of the whole automobile are affected; and the single motor can not adapt to various working conditions with high efficiency all the time, and the energy consumption can be further improved.
In addition, the coaxial integrated structure generally comprises a transmission shaft, so that the transmission efficiency is influenced, the assembly time of parts of the whole vehicle is increased, and the labor cost is increased; in addition, the planetary reduction mechanism and the motor generally share a shell, so that the maintenance is inconvenient; and the differential mechanism and the planetary reduction mechanism are generally arranged between the double motors, so that the axial size of the coaxial bridge is increased, and the planetary reduction mechanism is inconvenient to maintain.
In view of the above, a new bridge assembly is needed.
Disclosure of Invention
The invention aims to solve the technical problem firstly to provide a bridge assembly which has compact structure and small occupied space and is beneficial to the arrangement of a battery pack of an electric vehicle; when any motor fails, the other motor can still drive the whole vehicle to run; the system can adapt to various working conditions with high efficiency, further reduce energy consumption and improve the driving range and the economic performance of the whole vehicle.
In addition, the invention also aims to solve the problem of providing a vehicle which has compact structure and small occupied space and is beneficial to the arrangement of a battery pack of the electric vehicle; when any motor fails, the other motor can still drive the whole vehicle to run; the system can adapt to various working conditions with high efficiency, further reduce energy consumption and improve the driving range and the economic performance of the whole vehicle.
In order to solve the technical problem, the invention provides a bridge assembly, which comprises a first motor and a second motor assembly connected with the first motor; the first motor comprises an output shaft, the second motor assembly comprises a second motor and a differential mechanism, and a shell of the differential mechanism is supported on a shell of the second motor; the output shaft extends into the second motor and is connected with the shell of the differential.
Specifically, still include left axle housing and right axle housing, the one end of right axle housing with the casing of first motor is connected, the one end of left axle housing with the casing of second motor is connected.
In the above-described embodiment, more specifically, the left axle housing and the right axle housing are respectively provided with a left brake and a right brake; the other end of left side axle housing is equipped with left planet reduction gears, the other end of right side axle housing is equipped with right planet reduction gears.
Furthermore, a left half shaft and a right half shaft are arranged in the left axle housing and the right axle housing, one end of the left half shaft is connected with the differential, and the other end of the left half shaft is connected with the left planetary reduction mechanism; one end of the right half shaft penetrates through the output shaft to be connected with the differential mechanism, and the other end of the right half shaft is connected with the right planetary reduction mechanism.
Specifically, the first motor further comprises a first stator and a first rotor, wherein the first stator is arranged on a shell of the first motor; the output shaft is rigidly connected with the first rotor, and the first rotor is arranged opposite to the first stator.
Specifically, the output shaft is a hollow shaft.
As a specific implementation manner, the second motor further includes a second stator and a second rotor, and the second stator is disposed on a housing of the second motor; the differential is connected with the second rotor, and the second rotor is opposite to the second stator.
In a specific embodiment, the output shaft is splined to the housing of the differential.
Specifically, the left planetary reduction mechanism and the right planetary reduction mechanism respectively comprise a planetary reducer, a hub and a brake disc.
On the basis of the technical scheme, the invention further provides a vehicle which comprises the axle assembly.
Through the technical scheme of the invention, the invention has the advantages that,
(1) the invention integrates the differential mechanism and the motor, so that the coaxial bridge further reduces the size in the axial direction;
(2) according to the invention, through the coaxial integrated structure, a transmission shaft of a traditional automobile is omitted, so that the transmission efficiency is improved, the structure of the whole automobile is more compact, the assembly time of parts of the whole automobile is reduced, and the labor cost is reduced;
(3) through the cooperation of the double motors, each motor can run in a high-efficiency interval under the condition of meeting different operating conditions of the whole vehicle, the transmission efficiency of the whole vehicle is improved, the energy consumption is further reduced, and the driving range and the economic performance of the whole vehicle are improved;
(4) when the emergency brake is performed, the first motor and the second motor simultaneously participate in auxiliary brake, so that the brake force is further improved, and the brake safety performance of the whole vehicle is improved;
(5) when any one of the first motor or the second motor fails but the running condition of the rotor is not influenced, the whole vehicle can still be normally driven by the other motor, so that the stability and the safety of the whole vehicle are further improved;
(6) the planetary reduction mechanism and the motor do not share the shell, so that the planetary reduction mechanism is convenient to maintain.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:
FIG. 1 is a schematic front view of one embodiment of a bridge assembly of the present invention;
FIG. 2 is a schematic cross-sectional view of one embodiment of a bridge assembly of the present invention;
fig. 3 is a schematic structural diagram of a vehicle according to an embodiment of the present invention.
Description of the reference numerals
1 first electric machine 2 second electric machine assembly
3a left axle housing and 3b right axle housing
4a left brake 4b right brake
5a left planetary reduction gear 5b right planetary reduction gear
6a left half shaft 6b right half shaft
11 first stator 12 first rotor
13 second stator of output shaft 21
22 second rotor 23 differential
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
It should be noted that, in the following description of the technical solutions of the present invention, the terms "left" and "right" are used to define the technical definition with reference to the left and right sides of the vehicle in normal running, and the terms "left" and "right" are used to define the orientations of the two-speed axle assembly, which are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the protection scope of the transmission of the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "contacting" are to be interpreted broadly, e.g., the connection may be a direct connection or an indirect connection via an intermediate (e.g., a spline). The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1 and 2, a bridge assembly according to a basic embodiment of the present invention includes a first motor 1 and a second motor assembly 2 connected to the first motor 1; the first electric machine 1 comprises an output shaft 13, the second electric machine assembly 2 comprises a second electric machine and a differential 23, a shell of the differential 23 is rotatably supported on a shell of the second electric machine; the output shaft 13 projects into the interior of the second electric machine and is connected to the housing of the differential 23.
As a specific implementation mode, the electric vehicle further comprises a left axle housing 3a and a right axle housing 3b, wherein one end of the right axle housing 3b is connected with the housing of the first electric machine 1, and one end of the left axle housing 3a is connected with the housing of the second electric machine.
More specifically, the left axle housing 3a and the right axle housing 3b are respectively provided with a left brake 4a and a right brake 4 b; the other end of the left axle housing 3a is provided with a left planetary reduction mechanism 5a, and the other end of the right axle housing 3b is provided with a right planetary reduction mechanism 5 b.
In the above embodiment, furthermore, a left half shaft 6a and a right half shaft 6b are arranged in the left axle housing 3a and the right axle housing 3b, one end of the left half shaft 6a is connected with the differential 23, and the other end is connected with the left planetary reduction mechanism 5 a; one end of the right half shaft 6b passes through the output shaft 13 to be connected to the differential 23, and the other end is connected to the right planetary reduction mechanism 5 b.
It should be specifically described herein that the first motor 1 and the second motor are electric driving devices, and the first motor 1 and the second motor may be selected from motors with the same power and different single high-efficiency areas, or may be selected from one large motor and one small motor, that is, one motor ensures a high-efficiency area at a low rotation speed and one motor ensures a high-efficiency area at a high rotation speed, the large motor works under a low-speed and high-torque working condition, the small motor works under a high-speed and low-torque working condition, or the two motors are driven simultaneously (a main motor and an auxiliary motor), so as to ensure that the power is always sufficient under each working condition, and to ensure that the motors operate in the high-efficiency area to the maximum extent; the left and right axle housings 3a and 3b are a load bearing device; the left brake and 4a and the right brake 4b are a brake device; the left planetary reduction gear 5a and the right planetary reduction gear 5b are one kind of transmission.
As a specific embodiment, the first electric machine 1 further includes a first stator 11 and a first rotor 12, the first stator 11 is disposed on a housing of the first electric machine 1; the output shaft 13 is rigidly connected to the first rotor 12, and the first rotor 12 is disposed opposite to the first stator 11.
In the above-described embodiment, the output shaft 13 is preferably a hollow shaft.
In the embodiment of the above technical solution, specifically, the second motor further includes a second stator 21 and a second rotor 22, the second stator 21 is disposed on a housing of the second motor; the differential 23 is connected to the second rotor 22, and the second rotor 22 is disposed opposite to the second stator 21.
As an embodiment of the present invention, the output shaft 13 is splined to the housing of the differential 23.
As a specific embodiment of the present invention, the left planetary reduction mechanism 5a and the right planetary reduction mechanism 5b include a planetary reduction gear, a hub, and a brake disk, respectively.
The single-motor working mode of the invention is as follows: when the first motor 1 or the second motor works alone, the specific transmission route is as follows: the first motor 1 or the second motor, the differential 23, the left half shaft 6a, the right half shaft 6b, the left planetary reduction mechanism 5a and the right planetary reduction mechanism 5b, meet the power requirement of the whole vehicle, and enable the motor to always operate in the high-efficiency region of the motor when the vehicle operates.
In addition, the dual-motor working mode of the invention is as follows: when the first motor 1 and the second motor work simultaneously, the specific transmission route is as follows: the first motor 1+ the second motor-the differential 23-the left half shaft 6a, the right half shaft 6 b-the left planetary reduction gear 5a, the right planetary reduction gear 5 b-the whole vehicle; the power requirement of the whole vehicle is met, and the motor always runs in a high-efficiency area of the motor when the vehicle runs.
Referring to fig. 3, a second aspect of the present invention further provides a vehicle comprising an axle assembly according to any of the above embodiments, thereby providing at least all of the benefits of the embodiments of the axle assembly described above.
As can be seen from the above description, the advantages of the present invention are: the coaxial bridge is further reduced in size in the axial direction through the integration of the differential and the motor; through the coaxial integrated structure, a transmission shaft of a traditional automobile is omitted, so that the transmission efficiency is improved, the structure of the whole automobile is more compact, the assembly time of parts of the whole automobile is reduced, and the labor cost is reduced; through the cooperation of the double motors, each motor can run in a high-efficiency interval under the condition of meeting different operation conditions of the whole vehicle, the transmission efficiency of the whole vehicle is improved, the energy consumption is further reduced, and the driving range and the economic performance of the whole vehicle are improved; during emergency braking, the first motor 1 and the second motor participate in auxiliary braking at the same time, so that the braking force is further improved, and the braking safety performance of the whole vehicle is improved; when any one of the first motor 1 or the second motor fails but the running condition of the rotor is not influenced, the whole vehicle can still be normally driven by the other motor, so that the stability and the safety of the whole vehicle are further improved; the planetary reduction mechanism and the motor do not share the shell, so that the planetary reduction mechanism is convenient to maintain.
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications all belong to the protection scope of the embodiments of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention do not describe every possible combination.
In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.
Claims (10)
1. A bridge assembly, characterized by comprising a first electric machine (1) and a second electric machine assembly (2) connected to the first electric machine (1);
the first motor (1) comprises an output shaft (13), the second motor assembly (2) comprises a second motor and a differential (23), and a shell of the differential (23) is mounted on a shell of the second motor; the output shaft (13) extends into the second motor and is connected with a shell of the differential (23).
2. The axle assembly of claim 1, further comprising a left axle housing (3a) and a right axle housing (3b), one end of the right axle housing (3b) being connected to the housing of the first electric machine (1), one end of the left axle housing (3a) being connected to the housing of the second electric machine.
3. The axle assembly according to claim 2, characterized in that said left axle housing (3a) and said right axle housing (3b) are provided with a left brake (4a) and a right brake (4b), respectively; the other end of left axle housing (3a) is equipped with left planet reduction gears (5a), the other end of right axle housing (3b) is equipped with right planet reduction gears (5 b).
4. The axle assembly according to claim 3, characterized in that a left half shaft (6a) and a right half shaft (6b) are arranged in the left axle housing (3a) and the right axle housing (3b), one end of the left half shaft (6a) is connected with the differential (23), and the other end is connected with the left planetary reduction mechanism (5 a); one end of the right half shaft (6b) penetrates through the output shaft (13) to be connected with the differential (23), and the other end of the right half shaft is connected with the right planetary reduction mechanism (5 b).
5. The bridge assembly according to claim 1, characterized in that the first electrical machine (1) further comprises a first stator (11) and a first rotor (12), the first stator (11) being provided on a housing of the first electrical machine (1); the output shaft (13) is rigidly connected with the first rotor (12), and the first rotor (12) is arranged opposite to the first stator (11).
6. The axle assembly according to claim 1, characterized in that the output shaft (13) is a hollow shaft.
7. The bridge assembly according to claim 1, characterized in that the second electrical machine further comprises a second stator (21) and a second rotor (22), the second stator (21) being provided on a housing of the second electrical machine; the differential (23) is connected to the second rotor (22), and the second rotor (22) is disposed opposite to the second stator (21).
8. The axle assembly according to claim 1, characterized in that the output shaft (13) is splined to the housing of the differential (23).
9. The axle assembly according to claim 1, wherein the left planetary reduction mechanism (5a) and the right planetary reduction mechanism (5b) include a planetary reduction gear, a hub, and a brake disc, respectively.
10. A vehicle, characterized in that it comprises an axle assembly according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910765600.XA CN112389178A (en) | 2019-08-19 | 2019-08-19 | Axle assembly and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910765600.XA CN112389178A (en) | 2019-08-19 | 2019-08-19 | Axle assembly and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112389178A true CN112389178A (en) | 2021-02-23 |
Family
ID=74603511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910765600.XA Withdrawn CN112389178A (en) | 2019-08-19 | 2019-08-19 | Axle assembly and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112389178A (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2759821Y (en) * | 2004-10-29 | 2006-02-22 | 王明祥 | Electric vehicle double-engine driving bridge |
| CN2764646Y (en) * | 2004-12-24 | 2006-03-15 | 王明祥 | Combined driving and braking axle for electric vehicle |
| CN201038919Y (en) * | 2007-03-15 | 2008-03-19 | 王爱传 | A rear bridge |
| CN201257895Y (en) * | 2008-07-30 | 2009-06-17 | 无锡开普动力有限公司 | Motor-driven drive axle |
| CN101602326A (en) * | 2009-07-06 | 2009-12-16 | 奇瑞汽车股份有限公司 | A kind of differential retarder |
| CN101707412A (en) * | 2009-11-13 | 2010-05-12 | 北京科技大学 | Driving motor with function of differential speed output |
| CN201490832U (en) * | 2009-06-29 | 2010-05-26 | 童助林 | Differential mechanism assembly of brushless motor of electric vehicle |
| CN202703240U (en) * | 2012-05-21 | 2013-01-30 | 南通哈兰机械有限公司 | Drive axle having electric motor, gear deceleration mechanism, and braking system |
| CN103887917A (en) * | 2012-12-19 | 2014-06-25 | 耀马车业(中国)有限公司 | Brushless motor provided with built-in differential mechanism |
| CN105034798A (en) * | 2015-04-27 | 2015-11-11 | 谷伟 | Electric car powertrain |
| CN105186770A (en) * | 2015-08-01 | 2015-12-23 | 谷伟 | Differential dual-output motor |
| CN205622367U (en) * | 2016-05-10 | 2016-10-05 | 谷伟 | Recessed formula differential dual output motor of end cover |
| CN106427533A (en) * | 2016-11-16 | 2017-02-22 | 陕西理工学院 | Electric vehicle driving axle and driving and speed-regulating method thereof |
| CN107781378A (en) * | 2016-08-26 | 2018-03-09 | 东风德纳车桥有限公司 | A kind of motor differential assembly |
| CN207449605U (en) * | 2017-09-11 | 2018-06-05 | 广州精传科技有限公司 | Coaxial line distribution shaft dual-motor drive system |
-
2019
- 2019-08-19 CN CN201910765600.XA patent/CN112389178A/en not_active Withdrawn
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2759821Y (en) * | 2004-10-29 | 2006-02-22 | 王明祥 | Electric vehicle double-engine driving bridge |
| CN2764646Y (en) * | 2004-12-24 | 2006-03-15 | 王明祥 | Combined driving and braking axle for electric vehicle |
| CN201038919Y (en) * | 2007-03-15 | 2008-03-19 | 王爱传 | A rear bridge |
| CN201257895Y (en) * | 2008-07-30 | 2009-06-17 | 无锡开普动力有限公司 | Motor-driven drive axle |
| CN201490832U (en) * | 2009-06-29 | 2010-05-26 | 童助林 | Differential mechanism assembly of brushless motor of electric vehicle |
| CN101602326A (en) * | 2009-07-06 | 2009-12-16 | 奇瑞汽车股份有限公司 | A kind of differential retarder |
| CN101707412A (en) * | 2009-11-13 | 2010-05-12 | 北京科技大学 | Driving motor with function of differential speed output |
| CN202703240U (en) * | 2012-05-21 | 2013-01-30 | 南通哈兰机械有限公司 | Drive axle having electric motor, gear deceleration mechanism, and braking system |
| CN103887917A (en) * | 2012-12-19 | 2014-06-25 | 耀马车业(中国)有限公司 | Brushless motor provided with built-in differential mechanism |
| CN105034798A (en) * | 2015-04-27 | 2015-11-11 | 谷伟 | Electric car powertrain |
| CN105186770A (en) * | 2015-08-01 | 2015-12-23 | 谷伟 | Differential dual-output motor |
| CN205622367U (en) * | 2016-05-10 | 2016-10-05 | 谷伟 | Recessed formula differential dual output motor of end cover |
| CN107781378A (en) * | 2016-08-26 | 2018-03-09 | 东风德纳车桥有限公司 | A kind of motor differential assembly |
| CN106427533A (en) * | 2016-11-16 | 2017-02-22 | 陕西理工学院 | Electric vehicle driving axle and driving and speed-regulating method thereof |
| CN207449605U (en) * | 2017-09-11 | 2018-06-05 | 广州精传科技有限公司 | Coaxial line distribution shaft dual-motor drive system |
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Application publication date: 20210223 |