CN109421524A - A kind of electric axle assembly - Google Patents
A kind of electric axle assembly Download PDFInfo
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- CN109421524A CN109421524A CN201710774408.8A CN201710774408A CN109421524A CN 109421524 A CN109421524 A CN 109421524A CN 201710774408 A CN201710774408 A CN 201710774408A CN 109421524 A CN109421524 A CN 109421524A
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- reducer
- differential
- axle housing
- drive motor
- shaft
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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
- 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
- B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing of change-speed gearing
- B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing of change-speed gearing of mechanical type
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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
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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
- 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
- B60K17/165—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing of differential gearing provided between independent half axles
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Motor Power Transmission Devices (AREA)
- Retarders (AREA)
Abstract
本发明的名称为一种电动车桥总成。属于汽车制造技术领域。它主要是解决现有电动车桥总成传动链较长的问题。它的主要特征是：包括驱动电机、减速器、差速器、左半轴、右半轴和轮端；驱动电机连接在左桥壳与右桥壳之间；所述减速器和差速器装于左桥壳内，减速器与差速器配合；所述驱动电机的输出轴为集成有一级主动齿轮的空腔齿轮轴，与减速器连接；所述左半轴将差速器和左轮端连接；右半轴从驱动电机的输出轴轴腔内穿过，将差速器和右轮端连接；集成整体式电动车桥总成。本发明具有结构紧凑，动力输出平稳损耗小，减小占用车厢乘客空间的特点，主要用于纯电动汽车深度集成的电动车桥总成。
The name of the invention is an electric axle assembly. It belongs to the field of automobile manufacturing technology. It mainly solves the problem of the long transmission chain of the existing electric axle assembly. Its main features are: including a drive motor, a reducer, a differential, a left half shaft, a right half shaft and a wheel end; the drive motor is connected between the left axle housing and the right axle housing; the reducer and the differential It is installed in the left axle housing, and the reducer is matched with the differential; the output shaft of the drive motor is a cavity gear shaft integrated with a first-stage driving gear, which is connected with the reducer; the left half shaft connects the differential and the left wheel. The right half shaft passes through the shaft cavity of the output shaft of the drive motor to connect the differential with the right wheel end; the integral electric axle assembly is integrated. The invention has the characteristics of compact structure, stable power output and low loss, and reduces the occupation of passenger space in the carriage, and is mainly used for the deep-integrated electric axle assembly of pure electric vehicles.
Description
技术领域technical field
本发明属于汽车制造技术领域，具体涉及一种用于纯电动汽车深度集成的电动车桥总成。The invention belongs to the technical field of automobile manufacturing, and in particular relates to an electric axle assembly for deep integration of pure electric vehicles.
背景技术Background technique
目前，绝大多数纯电动汽车均采用传统内燃机汽车的动力传动结构，包括驱动电机、传动轴、减速器/差速器总成、车桥半轴和轮端。传统结构传动链较长导致传动效率损耗较大且各零部件体积较大会占用部分汽车的空间影响车厢乘客载客量和电池布置空间影响车辆续驶里程。At present, most pure electric vehicles use the power transmission structure of traditional internal combustion engine vehicles, including drive motor, transmission shaft, reducer/differential assembly, axle half shaft and wheel end. The long transmission chain of the traditional structure leads to a large loss of transmission efficiency, and the large volume of each component will occupy part of the space of the car, which will affect the passenger capacity of the passenger compartment and the battery layout space, which will affect the cruising range of the vehicle.
发明内容SUMMARY OF THE INVENTION
为克服现有技术的不足，本发明的目的在于提供一种将电机、减速器、差速器和传统机械车桥通过深度集成为一个电动车桥总成。此种紧凑的结构布置可以缩短传动链提高效率，提升车厢乘客容量和增加车厢的电池容量，从而降低单位载质量能量消耗量。In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a motor, a reducer, a differential and a traditional mechanical axle through deep integration into an electric axle assembly. This compact structure arrangement can shorten the transmission chain and improve the efficiency, increase the passenger capacity of the carriage and increase the battery capacity of the carriage, thereby reducing the energy consumption per unit load.
为实现上述目的，本发明采用以下技术解决方案：一种电动车桥总成，包括桥壳、驱动电机、减速器、差速器、左半轴、右半轴和轮端，其特征在于：所述桥壳包括左桥壳、右桥壳；所述驱动电机位于左桥壳与右桥壳之间；所述减速器和差速器装于左桥壳内，减速器与差速器配合；所述驱动电机的输出轴为集成有一级主动齿轮的空腔齿轮轴，一级主动齿轮同减速器连接；所述左半轴两端分别与差速器左侧和左侧的轮端连接，右半轴穿过驱动电机的输出轴轴腔，两端分别与差速器右侧和右侧的轮端连接；集成整体式电动车桥总成。In order to achieve the above object, the present invention adopts the following technical solutions: an electric axle assembly, comprising an axle housing, a drive motor, a reducer, a differential, a left half shaft, a right half shaft and a wheel end, characterized in that: The axle housing includes a left axle housing and a right axle housing; the drive motor is located between the left axle housing and the right axle housing; the reducer and the differential are installed in the left axle housing, and the reducer and the differential are matched ; The output shaft of the drive motor is a cavity gear shaft integrated with a first-stage driving gear, and the first-stage driving gear is connected with the reducer; the two ends of the left half shaft are respectively connected with the left and left wheel ends of the differential. , the right half shaft passes through the shaft cavity of the output shaft of the drive motor, and the two ends are respectively connected to the right and right wheel ends of the differential; the integral electric axle assembly is integrated.
本发明的技术解决方案中所述的减速器包括一级从动齿轮和二级主动齿轮；所述差速器包括二级从动齿轮，行星齿轮、半轴齿轮和差壳；减速器的一级从动齿轮与驱动电机输出轴的一级主动齿轮配合，减速器的二级主动齿轮同差速器的二级从动齿轮配合；驱动电机输出轴同减速器齿轮轴为平行轴结构；驱动电机输出轴与轮端、左半轴、右半轴同轴。The reducer described in the technical solution of the present invention includes a first-stage driven gear and a second-stage driving gear; the differential includes a second-stage driven gear, a planetary gear, a side gear and a differential case; The secondary driven gear is matched with the primary driving gear of the output shaft of the drive motor, and the secondary driving gear of the reducer is matched with the secondary driven gear of the differential; the output shaft of the driving motor and the gear shaft of the reducer are in a parallel shaft structure; The motor output shaft is coaxial with the wheel end, the left half shaft and the right half shaft.
本发明的技术解决方案中所述的左桥壳包括轴承座孔，通过轴承支撑减速器和差速器；驱动电机同左桥壳、右桥壳连接，一同组成共同承载结构。The left axle housing described in the technical solution of the present invention includes a bearing seat hole, and supports the reducer and the differential through the bearing; the drive motor is connected with the left axle housing and the right axle housing to form a common bearing structure.
本发明的技术解决方案中所述的轴承座孔包括减速器壳体部分的轴承座孔和位于左桥壳中轴线上的轴承座孔；其中，减速器壳体部分的轴承座孔分别支撑减速器导向轴承、头轴承和尾轴承，对减速器总成起到支撑作用；位于左桥壳中轴线上的轴承座孔支撑差速器两端轴承，对差速器起到支撑作用。The bearing seat hole described in the technical solution of the present invention includes a bearing seat hole of the reducer housing part and a bearing seat hole located on the central axis of the left axle housing; wherein, the bearing seat holes of the reducer housing part respectively support the reduction gear The gear guide bearing, head bearing and tail bearing play a supporting role for the reducer assembly; the bearing seat holes located on the central axis of the left axle housing support the bearings at both ends of the differential gear and play a supporting role on the differential gear.
本发明基于现有的纯电动汽车的动力传动结构，将减速器、差速器和传统机械车桥通过深度集成为一个电动车桥总成，取消了传动轴，动力通过左、右半轴直接输入到轮端。Based on the existing power transmission structure of pure electric vehicles, the present invention deeply integrates the reducer, the differential and the traditional mechanical axle into an electric axle assembly, cancels the transmission shaft, and directly transmits the power through the left and right half shafts. Input to the wheel end.
附图说明Description of drawings
图1是本发明纯电动车桥结构示意图。FIG. 1 is a schematic structural diagram of a pure electric vehicle axle of the present invention.
图中：1. 驱动电机；2. 减速器；3. 差速器；4. 左半轴； 5. 右半轴；6、左桥壳；7、右桥壳；8. 一级主动齿轮；9. 一级从动齿轮；10. 二级主动齿轮；11. 二级从动齿轮；12.差壳；13行星轮；14、半轴齿轮。In the figure: 1. Drive motor; 2. Reducer; 3. Differential; 4. Left half shaft; 5. Right half shaft; 6. Left axle housing; 7. Right axle housing; 8. Primary driving gear; 9. Primary driven gear; 10. Secondary driving gear; 11. Secondary driven gear; 12. Differential housing; 13 Planetary gear; 14. Side gear.
具体实施方式Detailed ways
如图1所示，本发明一种电动车桥总成由驱动电机1、减速器2、差速器3、左半轴4、右半轴5、左桥壳6、右桥壳7和轮端组成。其中，驱动电机1连接于左桥壳6与右桥壳7之间。减速器2和差速器3装于左桥壳6内，减速器2与差速器3配合。驱动电机1输出轴为集成有一级主动齿轮8的空腔齿轮轴，一级主动齿轮8同减速器2连接。减速器2由一级从动齿轮9、二级主动齿轮10组成齿轮组。差速器3包括二级从动齿轮11、行星齿轮13、半轴齿轮14和差壳12。左半轴4两端分别与差速器3左侧和左侧的轮端连接，右半轴5穿过驱动电机1的输出轴轴腔，两端分别与差速器3右侧和右侧的轮端连接。集成整体式电动车桥总成。减速器2的一级从动齿轮9与驱动电机1输出轴的一级主动齿轮8配合，减速器2的二级主动齿轮10同差速器3的二级从动齿轮11配合。驱动电机1输出轴同减速器2齿轮轴为平行轴结构，驱动电机1输出轴与轮端、左半轴4、右半轴5同轴。左桥壳6包括轴承座孔，通过轴承支撑减速器2和差速器3。轴承座孔包括减速器2壳体部分的轴承座孔和位于左桥壳中轴线上的轴承座孔，其中，减速器2壳体部分的轴承座孔分别支撑减速器导向轴承、头轴承和尾轴承，对减速器总成起到支撑作用，位于左桥壳中轴线上的轴承座孔支撑差速器3两端轴承，对差速器3起到支撑作用。驱动电机1同左桥壳6、右桥壳7连接，一同组成共同承载结构。动力由一级主动齿轮8传递给减速器一级从动齿轮9，再通过二级主动齿轮10带动同差速器3一体的二级从动齿轮11，差速器3一边通过左半轴4将动力传送到轮端，同时通过右半轴5穿过电机轴腔将动力输送到对向轮端。左桥壳6包括轴承座孔，通过轴承分别支撑减速器2和差速器3。As shown in Figure 1, an electric axle assembly of the present invention consists of a drive motor 1, a reducer 2, a differential 3, a left half shaft 4, a right half shaft 5, a left axle housing 6, a right axle housing 7 and wheels end composition. The drive motor 1 is connected between the left axle housing 6 and the right axle housing 7 . The reducer 2 and the differential 3 are installed in the left axle housing 6 , and the reducer 2 is matched with the differential 3 . The output shaft of the drive motor 1 is a cavity gear shaft integrated with a primary driving gear 8 , and the primary driving gear 8 is connected with the reducer 2 . The reducer 2 consists of a first-stage driven gear 9 and a second-stage driving gear 10 to form a gear set. The differential 3 includes a secondary driven gear 11 , planetary gears 13 , side gears 14 and a differential case 12 . Both ends of the left half shaft 4 are respectively connected with the left and left wheel ends of the differential 3, and the right half shaft 5 passes through the output shaft cavity of the drive motor 1, and the two ends are respectively connected with the right and right sides of the differential 3. wheel end connection. Integrated integral electric axle assembly. The primary driven gear 9 of the reducer 2 is matched with the primary driving gear 8 of the output shaft of the drive motor 1 , and the secondary driving gear 10 of the reducer 2 is matched with the secondary driven gear 11 of the differential 3 . The output shaft of the drive motor 1 and the gear shaft of the reducer 2 are parallel shaft structures, and the output shaft of the drive motor 1 is coaxial with the wheel end, the left half shaft 4 and the right half shaft 5 . The left axle housing 6 includes a bearing seat hole, and supports the reducer 2 and the differential 3 through bearings. The bearing seat hole includes the bearing seat hole of the housing part of the reducer 2 and the bearing seat hole located on the central axis of the left axle housing, wherein the bearing seat hole of the housing part of the reducer 2 supports the guide bearing, head bearing and tail of the reducer respectively. Bearings play a supporting role for the reducer assembly, and the bearing seat holes located on the central axis of the left axle housing support the bearings at both ends of the differential gear 3 and play a supporting role on the differential gear 3 . The drive motor 1 is connected with the left axle housing 6 and the right axle housing 7 to form a common bearing structure. The power is transmitted from the primary driving gear 8 to the primary driven gear 9 of the reducer, and then drives the secondary driven gear 11 integrated with the differential 3 through the secondary driving gear 10. The differential 3 passes through the left half shaft 4 on one side. The power is transmitted to the wheel end, and the power is transmitted to the opposite wheel end through the right half shaft 5 through the motor shaft cavity. The left axle housing 6 includes a bearing seat hole, and supports the reducer 2 and the differential 3 respectively through bearings.
本发明纯电动车桥驱动单元总成整合了传统纯电动车驱动单元中传统机械车桥的功能，并在结构和功能上替代了它们。将减速器2安装于左桥壳6内与差速器3集成，驱动电机1的动力通过一级主动齿轮8、减速器2、差速器3、轮端半轴4、5输入到两侧轮端，取消了锥齿轮使得动力的输入和输出端位于同一轴线，因此动力输出平稳效率较高。取消传动轴减少了零件数量，使得其结构紧凑重量减轻，增加了车厢乘客空间和电池布置空间，提高了产品适用性和竞争力。The pure electric axle drive unit assembly of the present invention integrates the functions of the traditional mechanical axles in the traditional pure electric vehicle drive unit, and replaces them in structure and function. The reducer 2 is installed in the left axle housing 6 and integrated with the differential gear 3, and the power of the drive motor 1 is input to both sides through the primary driving gear 8, the reducer 2, the differential gear 3, and the wheel end axle shafts 4 and 5. At the wheel end, the bevel gear is eliminated so that the power input and output ends are located on the same axis, so the power output is smooth and efficient. The elimination of the drive shaft reduces the number of parts, making it compact and lightweight, increasing the passenger space and battery layout space, and improving product applicability and competitiveness.
Claims (4)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710774408.8A CN109421524A (en) | 2017-08-31 | 2017-08-31 | A kind of electric axle assembly |
| PCT/CN2018/103422 WO2019042387A1 (en) | 2017-08-31 | 2018-08-31 | Electric axle assembly |
| JP2019548943A JP2020531335A (en) | 2017-08-31 | 2018-08-31 | Electric axle assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710774408.8A CN109421524A (en) | 2017-08-31 | 2017-08-31 | A kind of electric axle assembly |
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| CN109421524A true CN109421524A (en) | 2019-03-05 |
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| CN201710774408.8A Pending CN109421524A (en) | 2017-08-31 | 2017-08-31 | A kind of electric axle assembly |
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Cited By (8)
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| CN112172489A (en) * | 2019-07-03 | 2021-01-05 | 潍坊佩特来电器有限公司 | Integrated coaxial electric drive axle system |
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| CN206067464U (en) * | 2016-09-23 | 2017-04-05 | 辽宁曙光汽车集团股份有限公司 | Clutch for clutch control type electric drive vehicle bridge |
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| CN111469606A (en) * | 2020-04-29 | 2020-07-31 | 广西玉柴机器股份有限公司 | Coaxial three-stage speed reduction electric drive axle adopting cylindrical gear differential mechanism |
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| CN112477568A (en) * | 2020-12-28 | 2021-03-12 | 重庆市佳南工贸有限公司 | Coaxial electric vehicle rear axle and electric vehicle |
| CN114290883A (en) * | 2022-01-10 | 2022-04-08 | 广西汽车集团有限公司 | A New Type of Mechatronics Electric Drive Axle Structure |
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Application publication date: 20190305 |