WO2022032520A1 - 一种同轴式异步电驱系统 - Google Patents

一种同轴式异步电驱系统 Download PDF

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WO2022032520A1
WO2022032520A1 PCT/CN2020/108639 CN2020108639W WO2022032520A1 WO 2022032520 A1 WO2022032520 A1 WO 2022032520A1 CN 2020108639 W CN2020108639 W CN 2020108639W WO 2022032520 A1 WO2022032520 A1 WO 2022032520A1
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motor
electric drive
drive system
asynchronous electric
shaft
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PCT/CN2020/108639
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French (fr)
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任传委
毕路
刘怀远
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蔚然（南京）动力科技有限公司
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Priority to PCT/CN2020/108639 priority Critical patent/WO2022032520A1/zh
Priority to US18/041,088 priority patent/US20230302886A1/en
Priority to CN202080104171.2A priority patent/CN116133886A/zh
Priority to EP20949019.2A priority patent/EP4199321A4/en
Publication of WO2022032520A1 publication Critical patent/WO2022032520A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60K1/00—Arrangement or mounting of electrical propulsion units
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    • 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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    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
    • F16H37/0806—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with a plurality of driving or driven shafts
    • F16H37/0813—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with a plurality of driving or driven shafts with only one input shaft
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H02K17/32—Structural association of asynchronous induction motors with auxiliary mechanical devices, e.g. with clutches or brakes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
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    • H02K7/083—Structural association with bearings radially supporting the rotary shaft at both ends of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B60K17/356—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having fluid or electric motor, for driving one or more wheels
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    • B60—VEHICLES IN GENERAL
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    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/001—Arrangement or mounting of electrical propulsion units one motor mounted on a propulsion axle for rotating right and left wheels of this axle
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    • 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
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/006—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric motors
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    • B60—VEHICLES IN GENERAL
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    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
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    • B60Y2400/60—Electric Machines, e.g. motors or generators
    • B60Y2400/604—AC Machines, e.g. asynchronous motors
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    • F16H57/00—General details of gearing
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Abstract

本发明公开了一种同轴式异步电驱系统，包括：减速机、电机和主壳体，还包括电机控制器，电机和减速机连接后成为电机减速器总成并安装在主壳体内，电机控制器固定在主壳体上且与电机减速器总成连接，本发明的系统降低了纯电动四驱汽车辅助电驱动系统的寄生损耗，提升整车续航，并且尺寸紧凑，浑然一体的同轴电驱系统，利于实现整车可用空间最大化利用。

Description

一种同轴式异步电驱系统 技术领域
本发明涉及电动汽车领域，具体是一种同轴式异步电驱系统。
背景技术
气候变化、能源和环境问题是人类社会共同面对的长期问题。随着美国表示回归COP15(《联合国气候变化框架公约》缔约方第15次会议)和以中国、印度为代表的新兴国家被纳入到其中，以及主要国家积极实施能源和环境保护战略，全球进入了真正解决人类社会共同问题的时代。交通运输领域的温室气体排放、能源消耗和尾气排放三大问题是否有效解决直接影响人类共同问题能够有效解决，为此，全球主要国家政府、组织、汽车生产商、能源供应商、风险投资企业共同行动起来，推动全球汽车工业产业结构升级和动力系统电动化战略转型，促进具有多层次结构的电动汽车社会基础产业形成和相应的政策、组织保障体系建设，助推可持续发展电动汽车社会的形成。
作为世界能源消耗大国和环境保护的重要力量，中国积极实施电动汽车科技战略，促进汽车工业产业结构升级和动力系统电动化转型，培育和发展电动汽车社会，并取得了一定效果，降低交通领域温室气体排放是解决全球气候变化重要手段，是建设可持续发展电动汽车社会前提条件。电动汽车无内燃机汽车工作时产生的废气，不产生排气污染，对环境保护和空气的洁净是十分有益的，几乎是“零污染”。另一方面，电动汽车的应用可有效地减少对石油资源的依赖，可将有限的石油用于更重要的方面。
目前，纯电动四驱汽车、P4型电桥四驱混合动力汽车等大多采用永磁同步电机然而在大部分情况下，特别是高速巡航时，永磁辅助驱动系统不输出扭矩但需要消耗能量实现零扭矩控制，这样会降低整车续航里程。目前大部分电驱系统采用平行轴减速器，这种减速器虽结构简单，但具有较大的尺寸，特别是沿车长方向，不利于整车可用空间最大化利用。
发明内容
发明目的：为了解决现有技术的不足，本发明提供了一种可以提升整车续航，并且结构紧凑的同轴式异步电驱系统。
技术方案：为了实现以上目的，本发明提供的一种同轴式异步电驱系统，包括：减速机、电机和主壳体，还包括电机控制器，电机和减速机连接后成为电机减速器总成并安装在主壳体内，电机控制器固定在主壳体上且与电机减速器总成连接；
减速器的输入轴与输出轴在同一条直线上，电机的中空电机轴上有减速器输入齿轮；
电机控制器控制驱动电机的中空电机轴上齿轮与中间轴总成啮合后将扭矩传递至整体式差速器，经整体式差速器向两侧输出，其一侧差速器半轴齿轮花键与整车半轴连接，另一侧差速器半轴齿轮花键与一根短半轴连接，且短半轴穿过电机转子并在电机露出端有花键与挡圈用来与整车半轴内花键连接。
作为本发明的进一步优选，中间轴总成通过第一中间轴锥轴承与第二中间轴锥轴承分别支撑在齿轮箱壳盖与主壳体总成上。
作为本发明的进一步优选，差速器半轴齿轮花键与电机侧短半轴连接。
作为本发明的进一步优选，电机侧短半轴和高速油封旋转密封，高速油封外圈与中空电机轴过盈密封，油封随电机轴一起旋转，油封内侧与电机侧短半轴旋转密封。
作为本发明的进一步优选，电机侧短半轴通过电机侧短半轴支撑轴承支撑在电机侧短半轴轴承座上。
作为本发明的进一步优选，主壳体上设有后悬置用螺纹组、前悬置用螺纹组、电机侧前悬置用螺纹组和电机侧后悬置用螺纹组。
作为本发明的进一步优选，后悬置用螺纹组用于安装系统齿轮箱侧的近差速器悬置支架。
作为本发明的进一步优选，前悬置用螺纹组用于安装系统齿轮箱侧的远差速器悬置支架。
作为本发明的进一步优选，侧前悬置用螺纹组用于安装系统电机侧的前悬置支架。
作为本发明的进一步优选，电机侧后悬置用螺纹组用于安装系统电机侧的后悬置支架。
作为本发明的进一步优选，位于主壳体上的电机控制器的进水口水嘴与电机出水口水嘴在同侧。
作为本发明的进一步优选，电机控制器从自身密封的壳体中露出电机控制器侧三相铜排与电机控制器侧温度与旋变信号及接口，电机控制器通过电机后端盖的四个固定螺栓安装在电机减速器总成上。
作为本发明的进一步优选，电机控制器的顶部和齿轮箱侧输出端圆心处之间的距离不大于210mm，该尺寸直接影响整车EDS上方可用空间。
作为本发明的进一步优选，齿轮箱侧输出端圆心处和主壳体底部之间的距离不大于143mm，该尺寸影响整车离地间隙。
作为本发明的进一步优选，齿轮箱侧输出端圆心处和主壳体上车头方向的端部之间的距离不大于188mm，该尺寸占据车辆前悬空间尺寸，较小的L31更有利于整车集成较大的前备箱。
作为本发明的进一步优选，齿轮箱侧输出端圆心处和主壳体上车头反方向的端部之间的距离不大于143mm，该尺寸占据车辆两轴间的长度尺寸，该尺寸直接影响电池包长度尺寸布置。
作为本发明的进一步优选，齿轮箱侧输出端圆心处和电机侧输出端之间的距离不大于520mm，该尺寸占据车辆驱动轮的两轮间有限尺寸，直接影响两侧半轴长度，该尺寸长则导致半轴短，半轴过短直接影响万向节的寿命，NVH性能甚至超出极限运动范围。
有益效果：本发明提供的一种同轴式异步电驱系统，与现有技术相比，具有以下优点：
1、降低了纯电动四驱汽车辅助电驱动系统寄生损耗，提升整车续航；
2、尺寸紧凑，浑然一体的同轴电驱系统，利于实现整车可用空间最大化利用。
附图说明
图1为本发明的剖视与动力传递路径图。
图2为本发明安装完成后的结构示意图；
图3为本发明的正视图；
图4为本发明的后视图；
图5为本发明的左视图；
图6为本发明的右视图；
图7为本发明的零件图。
其中，附图标记说明如下：
1 电机后端盖
2 主壳体
3 电机水道外壳
4 定子总成
5   铸铝转子
6   中空电机轴
8   高速轴承
9   差速器支撑座
12  整体式差速器
13  齿轮箱壳盖
15  齿轮箱侧输出油封
17  中间轴总成
19  电机控制器进水口
20  电机控制器
21  电机侧短半轴
22  电机侧输出油封
23  电机侧短半轴支撑轴承
24  电机侧短半轴轴承座
25  旋变总成
26  电机后端高速轴承
61  中空电机轴上齿轮
171 中间轴总成一级被动齿轮
172 中间轴总成二级主动齿轮
200 电机
211 电机侧短半轴露出端外花键与挡圈
300 减速机
2011 电机控制器侧三相铜排
2012 电机控制器侧温度与旋变信号及接口
2015 电机的三相铜排
2018 电机后端盖
A7    高速油封
A11 差速器锥轴承
A16 第一中间轴锥轴承
AM1 后悬置用螺纹组
BM2 前悬置用螺纹组
CM3 电机侧前悬置用螺纹组
DM4 电机侧后悬置用螺纹组
B10 高速油封
B14 差速器锥轴承
B18 第二中间轴锥轴承
W1 端面搅拌摩擦焊缝
W2 环形搅拌摩擦焊
Y1   进水口水嘴
Y2   出水口水嘴
AB1、BB2、CB3、DB4 螺栓
具体实施方式
下面结合附图和具体实施例，进一步阐明本发明。
本发明的一种同轴式异步电驱系统，如图1所示，电机200和减速机300连接后成为电机减速器总成并安装在主壳体2内，电机控制器20通过螺栓固定在主壳体2上且与电机减速器总成连接。
如图2、图3所示，主壳体上设有后悬置用螺纹组AM1、前悬置用螺纹组BM2、电机侧前悬置用螺纹组CM3和电机侧后悬置用螺纹组DM4，后悬置用螺纹组AM1用于安装系统齿轮箱侧的近差速器悬置支架,前悬置用螺纹组BM2用于安装系统齿轮箱侧的远差速器悬置支架,侧前悬置用螺纹组CM3用于安装系统电机侧的前悬置支架,电机侧后悬置用螺纹组DM4用于安装系统电机侧的后悬置支架。
如图2、图3、图4所示，电机控制器的顶部和齿轮箱侧输出端圆心处之间的距离不大于210mm，该尺寸直接影响整车EDS上方可用空间；齿轮箱侧输出端圆心处和主壳体底部之间的距离不大于143mm，该尺寸影响整车离地间隙；齿轮箱侧输出端圆心处和主壳体上车头方向的端部之间的距离不大于188mm，该尺寸占据车辆前悬空间尺寸，较小的L31更有利于整车集成较大的前备箱；齿轮箱侧输出端圆心处和主壳体上车头反方向的端部之间的距离不大于143mm，该尺寸占据车辆两轴间的长度尺寸，该尺寸直接影响电池包长度尺寸布置；齿轮箱侧输出端圆心处和电机侧输出端之间的距离不大于520mm，该尺寸占据车辆驱动轮的两轮间有限尺寸，直接影响两侧半轴长度，该尺寸长则导致半轴短，半轴过短直接影响万向节的寿命，NVH性能甚至超出极限运动范围。
如图5所示，位于主壳体2上的电机控制器20的进水口水嘴Y1与电机出水口水嘴Y2在同侧。
如图6所示，电机控制器20从自身密封的壳体中露出电机控制器侧三相铜排2011与电机控制器侧温度与旋变信号及接口2012，电机控制器20通过电机后端盖2018，即通过螺栓AB1、螺栓BB2、螺栓CB3和螺栓DB4这4个固定螺栓 安装在电机减速器总成上，实现无露出连接。电机控制器侧三相铜排2011与电机的三相铜排2015，电机控制器侧温度与旋变信号及接口2012均通过电机后端盖内实现无露出连接。
如图7所示，本发明提供的一种同轴式异步电驱系统，包括：电机后端盖1、主壳体2、电机水道外壳3、定子总成4、铸铝转子5、中空电机轴6、中空电机轴上齿轮61、高速油封A7、高速轴承8、差速器支撑座9、高速油封B10、差速器锥轴承A11、整体式差速器12、齿轮箱壳盖13、差速器锥轴承B14、齿轮箱侧输出油封15、第一中间轴锥轴承A16、中间轴总成17、中间轴总成一级被动齿轮171、中间轴总成二级主动齿轮172、第二中间轴锥轴承B18、电机控制器进水口19、电机控制器20、电机侧短半轴21、电机侧短半轴露出端外花键与挡圈211、电机侧输出油封22、电机侧短半轴支撑轴承23、电机侧短半轴轴承座24、旋变总成25、电机后端高速轴承26、端面搅拌摩擦焊缝W1和环形搅拌摩擦焊W2。
电机后端盖1与主壳体2总成采用螺栓连接在一起，主壳体2与电机水道外壳3间采用端面搅拌摩擦焊缝W1与环形搅拌摩擦焊W2，形成主壳体2，定子总成4过盈压入主壳体2。
中空电机轴6过盈压入铸铝转子5，高速油封A7的外圈与主壳体2过盈密封并与中空电机轴6旋转密封，差速器支撑座9通过螺栓固定在主壳体2上，其一侧压紧高速轴承8的外圈实现该轴承限位，高速油封2的外圈与中空电机轴6过盈密封，油封随中空电机轴6一起旋转，油封内侧与电机侧短半轴21旋转密封；差速器锥轴承A11的外圈安装在差速器支撑座9的轴承座孔内，支撑差速器一侧；整体式差速器12的第二级被动齿轮直接与差速器一侧壳体整体加工，待差速齿轮系统装配后与另一侧差速器壳体激光焊接，差速器锥轴承B14的外圈安装在齿轮箱壳盖13轴承座孔内，支撑差速器一侧；齿轮箱侧输出油封15与整车半轴内节旋转密封，中间轴总成17通过第一中间轴锥轴承A16与第二中间轴锥轴承B18分别支撑在齿轮箱壳盖13与主壳体2上；电机侧短半轴21与差速器半轴齿轮花键连接且与高速油封B10旋转密封，通过电机侧短半轴支撑轴承23支撑在电机侧短半轴轴承座24上；电机侧输出油封22安装在电机侧短半轴轴承座24上，其内侧与电机侧短半轴21旋转密封；旋变总成25的定子固定安装在电机侧短半轴轴承座24上，其转子安装在中空电机轴6上。
实施例
电机控制器20将直流电电流转变为异步电机100所需的三相交变电流驱动电机转子，进而从中空电机轴上齿轮61输出扭矩，传递至与中空电机轴上齿轮 61啮合的中间轴总成一级被动齿轮171，扭矩经第一级齿轮副完成第一次增扭；扭矩经中间轴总成17的中间轴总成二级主动齿轮172传递至与啮合的整体式差速器12，扭矩经第二级齿轮副完成第二次增扭；再经整体式差速器12向两侧输出；由于本发明的整体式差速器12与异步电机100在同一轴线上，因此采用电机侧短半轴21，其一侧与差速器半轴齿轮花键连接，另一侧穿过电机转子并在其露出端设有电机侧短半轴露出端外花键与挡圈211，用于与整车电机侧半轴内节的内花键连接与轴向限位；整车齿轮箱侧半轴内节采用常规外花键，直接插入整体式差速器12内与半轴齿轮连接并限位。
对比实验数据
尺寸 本发明 平行轴结构
L1 <210mm 200-210mm
L2 <143mm 145-155mm
L3 <331mm 450-470mm
L31 <188mm 320-350mm
L32 <143mm 145-155mm
L4 <520mm 480-500mm
上述实施方式只为说明本发明的技术构思及特点，其目的是让熟悉该技术领域的技术人员能够了解本发明的内容并据以实施，并不能以此来限制本发明的保护范围。凡根据本发明精神实质所做出的等同变换或修饰，都应涵盖在本发明的保护范围之内。
以上所述仅为本实用新型的优选实施例而已，并不用于限制本实用新型，对于本领域的技术人员来说，本实用新型可以有各种更改和变化。凡在本实用新型的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本实用新型的保护范围之内。

Claims (17)

  1. 一种同轴式异步电驱系统，包括：减速机、电机和主壳体，其特征在于：还包括电机控制器，所述电机和所述减速机连接后成为电机减速器总成并安装在所述主壳体内，所述电机控制器固定在所述主壳体上且与所述电机减速器总成连接；
    所述减速器的输入轴与输出轴在同一条直线上，所述电机的中空电机轴上有减速器输入齿轮；
    所述电机控制器控制驱动所述电机的中空电机轴上齿轮与中间轴总成啮合后将扭矩传递至整体式差速器，经所述整体式差速器向两侧输出，其一侧差速器半轴齿轮花键与整车半轴连接，另一侧差速器半轴齿轮花键与一根短半轴连接，且短半轴穿过电机转子并在电机露出端有花键与挡圈用来与整车半轴内花键连接。
  2. 根据权利要求1所述的一种同轴式异步电驱系统，其特征在于：所述的中间轴总成通过第一中间轴锥轴承与第二中间轴锥轴承分别支撑在齿轮箱壳盖与主壳体总成上。
  3. 根据权利要求1所述的一种同轴式异步电驱系统，其特征在于：所述差速器半轴齿轮花键与电机侧短半轴连接。
  4. 根据权利要求3所述的一种同轴式异步电驱系统，其特征在于：所述电机侧短半轴和高速油封旋转密封。
  5. 根据权利要求3所述的一种同轴式异步电驱系统，其特征在于：所述电机侧短半轴通过电机侧短半轴支撑轴承支撑在电机侧短半轴轴承座上。
  6. 根据权利要求1所述的一种同轴式异步电驱系统，其特征在于：所述主壳体上设有后悬置用螺纹组、前悬置用螺纹组、电机侧前悬置用螺纹组和电机侧后悬置用螺纹组。
  7. 根据权利要求6所述的一种同轴式异步电驱系统，其特征在于：所述后悬置用螺纹组用于安装系统齿轮箱侧的近差速器悬置支架。
  8. 根据权利要求6所述的一种同轴式异步电驱系统，其特征在于：所述前悬置用螺纹组用于安装系统齿轮箱侧的远差速器悬置支架。
  9. 根据权利要求6所述的一种同轴式异步电驱系统，其特征在于：所述侧前悬置用螺纹组用于安装系统电机侧的前悬置支架。
  10. 根据权利要求6所述的一种同轴式异步电驱系统，其特征在于：所述电 机侧后悬置用螺纹组用于安装系统电机侧的后悬置支架。
  11. 根据权利要求1所述的一种同轴式异步电驱系统，其特征在于：位于主壳体上的电机控制器的进水口水嘴与电机出水口水嘴在同侧。
  12. 根据权利要求1所述的一种同轴式异步电驱系统，其特征在于：所述电机控制器从自身密封的壳体中露出电机控制器侧三相铜排与电机控制器侧温度与旋变信号及接口，电机控制器通过电机后端盖的四个固定螺栓安装在电机减速器总成上。
  13. 根据权利要求1所述的一种同轴式异步电驱系统，其特征在于：所述电机控制器的顶部和齿轮箱侧输出端圆心处之间的距离不大于210mm。
  14. 根据权利要求1所述的一种同轴式异步电驱系统，其特征在于：所述齿轮箱侧输出端圆心处和主壳体底部之间的距离不大于143mm。
  15. 根据权利要求1所述的一种同轴式异步电驱系统，其特征在于：所述齿轮箱侧输出端圆心处和主壳体上车头方向的端部之间的距离不大于188mm。
  16. 根据权利要求1所述的一种同轴式异步电驱系统，其特征在于：所述齿轮箱侧输出端圆心处和主壳体上车头反方向的端部之间的距离不大于143mm。
  17. 根据权利要求1所述的一种同轴式异步电驱系统，其特征在于：所述齿轮箱侧输出端圆心处和电机侧输出端之间的距离不大于520mm。
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CN110829707A (zh) * 2019-11-07 2020-02-21 菲仕绿能科技(宁波)有限公司 一种同轴电驱动总成传动系统

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CN114475189A (zh) * 2022-02-24 2022-05-13 联合汽车电子有限公司 一种电驱动桥

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