CN104633015A

CN104633015A - Two-gear automatic transmission for battery electric vehicle

Info

Publication number: CN104633015A
Application number: CN201410829232.8A
Authority: CN
Inventors: 陈志峰; 徐向阳; 刘艳芳
Original assignee: Beihang University
Current assignee: Beihang University
Priority date: 2014-12-26
Filing date: 2014-12-26
Publication date: 2015-05-20

Abstract

A two-speed automatic transmission for pure electric vehicles, which includes an input shaft, an intermediate shaft, a first spur gear pair, a second spur gear pair, a third spur gear pair, a first torque transmission device, and a second torque transmission device , and the differential assembly; the rotation centerlines of the input shaft, the intermediate shaft, and the differential assembly are parallel to each other; the present invention integrates the driving motor, the automatic transmission and the drive axle, expands the transmission ratio range, and greatly reduces The performance requirements for the driving motor are simple and compact structure, light weight, stable transmission, wide range of transmission ratio, high power transmission efficiency, low energy consumption, improved power and economy of the vehicle, and greatly reduced manufacturing costs.

Description

Two-speed automatic transmission for pure electric vehicles

技术领域technical field

本发明涉及一种两挡变速器，特别是涉及一种应用于纯电动汽车的两挡自动变速器，属于汽车技术领域。The invention relates to a two-speed transmission, in particular to a two-speed automatic transmission applied to pure electric vehicles, belonging to the technical field of automobiles.

背景技术Background technique

动力传动技术属于纯电动汽车的核心技术，其类型与性能直接决定了纯电动汽车的动力性能与能耗水平。在驱动电机性能一定的情况下，为了进一步提高驱动轮的转矩，达到纯电动汽车的动力性要求，并能够调节电机转速和车速之间的关系，往往使用变速传动装置。目前，纯电动汽车多采用单挡减速器，其结构简单、体积小、质量轻、成本低，在运行过程中无需换挡，不存在动力中断的情况。Power transmission technology is the core technology of pure electric vehicles, and its type and performance directly determine the power performance and energy consumption level of pure electric vehicles. In the case of a certain drive motor performance, in order to further increase the torque of the drive wheel, meet the power requirements of pure electric vehicles, and be able to adjust the relationship between the motor speed and vehicle speed, a variable speed transmission is often used. At present, pure electric vehicles mostly use single-speed reducers, which are simple in structure, small in size, light in weight, and low in cost. There is no need to change gears during operation, and there is no power interruption.

但是，采用单挡减速器时，对驱动电机要求较高，要求驱动电机既能在恒转矩区提供较高的驱动转矩，又能在恒功率区提供较高的转速，以满足车辆加速、爬坡与高速行驶的要求。同时，采用单挡减速器不利于提高电驱动总成系统的效率。这是因为单一传动比通常无法同时兼顾纯电动汽车的动力性和经济性，行驶过程中驱动电机多数情况无法处于高效率工作点，尤其是在最高或最低车速以及低负荷条件下，驱动电机效率一般会降至60-70％以下，严重浪费了车载电能而减少续驶里程。另外，单挡减速器也不利于采用高效率、轻量化的驱动电机。为了使纯电动汽车能更好地发挥其优越性，同时降低对驱动电机和电池的要求，纯电动汽车电驱动系统应采用多挡变速器，通过对多挡变速器的操纵来保证驱动电机能够更多地工作在较为理想的高效率区域，从而提高整车的动力性、经济性等指标。However, when a single-speed reducer is used, the requirements for the drive motor are relatively high, and the drive motor is required to provide both high drive torque in the constant torque area and high speed in the constant power area to meet the needs of vehicle acceleration. , climbing and high-speed driving requirements. At the same time, the use of a single-speed reducer is not conducive to improving the efficiency of the electric drive assembly system. This is because a single transmission ratio usually cannot take into account the power and economy of a pure electric vehicle at the same time, and the driving motor cannot be at a high-efficiency operating point in most cases during driving, especially at the highest or lowest speed and low load conditions. Generally, it will drop below 60-70%, which seriously wastes the vehicle electric energy and reduces the driving range. In addition, the single-speed reducer is not conducive to the use of high-efficiency, lightweight drive motors. In order to make pure electric vehicles take full advantage of their advantages and reduce the requirements for drive motors and batteries, the electric drive system of pure electric vehicles should use a multi-speed transmission. Work in an ideal high-efficiency area, thereby improving the vehicle's power, economy and other indicators.

相较于更多挡位甚至无级变速变速器，两挡变速器由于结构更简单紧凑，功率密度更高，可实现动力换挡，技术相对成熟，对电机要求更低，电驱动系统综合成本更低，同时能保证较高的传动效率，在纯电动汽车领域大范围推广应用的可能性更高，能更快产业化和市场化，从而具有更大的可行性。Compared with more gears or even continuously variable transmissions, two-speed transmissions have a simpler and more compact structure, higher power density, and can realize power shifting. The technology is relatively mature, the requirements for the motor are lower, and the overall cost of the electric drive system is lower. , At the same time, it can ensure high transmission efficiency, and the possibility of large-scale promotion and application in the field of pure electric vehicles is higher, and it can be industrialized and marketized faster, so it has greater feasibility.

发明内容Contents of the invention

(1)目的(1. Purpose

本发明的目的在于提供一种纯电动汽车用两挡自动变速器，以解决现有的纯电动汽车用单挡减速器对驱动电机和电池要求较高、驱动电机运行效率较低等问题，提高纯电动汽车的动力性和经济性。The purpose of the present invention is to provide a two-speed automatic transmission for pure electric vehicles, so as to solve the problems of the existing single-speed reducer for pure electric vehicles, which have high requirements on the driving motor and battery, and the operating efficiency of the driving motor is low, and improve the efficiency of the pure electric vehicle. The power and economy of electric vehicles.

(2)技术方案(2) Technical solution

本发明一种纯电动汽车用两挡自动变速器，包含输入轴、中间轴、第一圆柱齿轮副、第二圆柱齿轮副、第三圆柱齿轮副、第一转矩传递装置、第二转矩传递装置，以及差速器总成。其中：The present invention is a two-speed automatic transmission for pure electric vehicles, comprising an input shaft, an intermediate shaft, a first cylindrical gear pair, a second cylindrical gear pair, a third cylindrical gear pair, a first torque transmission device, and a second torque transmission device. device, and the differential assembly. in:

1)所述输入轴横截面为圆形；1) The cross section of the input shaft is circular;

2)所述中间轴横截面为圆形；2) The cross-section of the intermediate shaft is circular;

3)所述第一圆柱齿轮副可以是直齿圆柱齿轮副或斜齿圆柱齿轮副，包括第一圆柱齿轮副主动齿轮和第一圆柱齿轮副从动齿轮；3) The first spur gear pair can be a spur gear pair or a helical spur gear pair, including the driving gear of the first spur gear pair and the driven gear of the first spur gear pair;

4)所述第二圆柱齿轮副可以是直齿圆柱齿轮副或斜齿圆柱齿轮副，包括第二圆柱齿轮副主动齿轮和第二圆柱齿轮副从动齿轮；4) The second spur gear pair can be a spur gear pair or a helical spur gear pair, including the second spur gear pair driving gear and the second spur gear pair driven gear;

5)所述第三圆柱齿轮副可以是直齿圆柱齿轮副或斜齿圆柱齿轮副，包括第三圆柱齿轮副主动齿轮和第三圆柱齿轮副从动齿轮；5) The third cylindrical gear pair can be a spur gear pair or a helical cylindrical gear pair, including the driving gear of the third cylindrical gear pair and the driven gear of the third cylindrical gear pair;

6)所述第一转矩传递装置可以是离合器、同步器或接合套等，包括第一转矩传递装置主动端和第一转矩传递装置从动端，其中，所述第一转矩传递装置主动端和第一转矩传递装置从动端可以选择性地接合，将输入轴和第一圆柱齿轮副主动齿轮暂时地连接起来；6) The first torque transmission device may be a clutch, a synchronizer or an engagement sleeve, etc., including a driving end of the first torque transmission device and a driven end of the first torque transmission device, wherein the first torque transmission device the drive end of the device and the driven end of the first torque transmitting device are selectively engageable to temporarily connect the input shaft and the drive gear of the first spur gear pair;

7)所述第二转矩传递装置可以是离合器、同步器或接合套等，包括第二转矩传递装置主动端和第二转矩传递装置从动端，其中，所述第二转矩传递装置主动端和第二转矩传递装置从动端可以选择性地接合，将输入轴和第二圆柱齿轮副主动齿轮暂时地连接起来；7) The second torque transmission device may be a clutch, a synchronizer, or an engagement sleeve, etc., including a driving end of the second torque transmission device and a driven end of the second torque transmission device, wherein the second torque transmission device the drive end of the device and the driven end of the second torque transmitting device are selectively engageable to temporarily connect the input shaft and the drive gear of the second spur gear pair;

8)所述差速器总成可选用市场上的现成产品。8) The differential gear assembly can be a ready-made product on the market.

因此，本发明的齿轮结构和转矩传递装置结构会因具体的设计要求的变化而有多种变化的技术方案，基于本发明而获得的其他齿轮结构方案或转矩传递装置结构方案均在本发明的权利主张内。Therefore, the gear structure and the torque transmission device structure of the present invention can have various technical solutions due to changes in specific design requirements, and other gear structure solutions or torque transmission device structure solutions obtained based on the present invention are all included in this document. Invention claims.

它们之间的相互关系优化方案是：The optimization scheme of the interrelationship between them is:

1)所述输入轴、中间轴以及差速器总成的旋转中心线相互平行；1) The rotation centerlines of the input shaft, the intermediate shaft and the differential assembly are parallel to each other;

2)所述输入轴、第一转矩传递装置、第二转矩传递装置、第一圆柱齿轮副主动齿轮和第二圆柱齿轮副主动齿轮的旋转中心线重合；2) The centerlines of rotation of the input shaft, the first torque transmission device, the second torque transmission device, the first spur gear secondary driving gear and the second spur gear secondary driving gear coincide;

3)所述中间轴、第一圆柱齿轮副从动齿轮、第二圆柱齿轮副从动齿轮和第三圆柱齿轮副主动齿轮的旋转中心线重合；3) The centerlines of rotation of the intermediate shaft, the driven gear of the first cylindrical gear pair, the driven gear of the second cylindrical gear pair and the driving gear of the third cylindrical gear pair coincide;

4)所述差速器总成和第三圆柱齿轮副从动齿轮的旋转中心线重合；4) The centerlines of rotation of the differential gear assembly and the driven gear of the third cylindrical gear pair coincide;

5)所述输入轴与第一转矩传递装置主动端固定连接；5) The input shaft is fixedly connected to the driving end of the first torque transmission device;

6)所述输入轴与第二转矩传递装置主动端固定连接；6) The input shaft is fixedly connected to the driving end of the second torque transmission device;

7)所述中间轴与第一圆柱齿轮副从动齿轮固定连接；7) The intermediate shaft is fixedly connected with the driven gear of the first cylindrical gear pair;

8)所述中间轴与第二圆柱齿轮副从动齿轮固定连接；8) The intermediate shaft is fixedly connected with the driven gear of the second cylindrical gear pair;

9)所述中间轴与第三圆柱齿轮副主动齿轮固定连接；9) The intermediate shaft is fixedly connected to the driving gear of the third cylindrical gear pair;

10)所述差速器总成的外壳与第三圆柱齿轮副从动齿轮固定连接；10) The housing of the differential gear assembly is fixedly connected with the driven gear of the third cylindrical gear pair;

11)所述第一圆柱齿轮副主动齿轮与第一转矩传递装置从动端固定连接；11) The driving gear of the first cylindrical gear pair is fixedly connected to the driven end of the first torque transmission device;

12)所述第二圆柱齿轮副主动齿轮与第二转矩传递装置从动端固定连接；12) The driving gear of the second cylindrical gear pair is fixedly connected with the driven end of the second torque transmission device;

13)所述第一圆柱齿轮副主动齿轮空套在输入轴上；13) The driving gear of the first spur gear pair is idling on the input shaft;

14)所述第二圆柱齿轮副主动齿轮空套在输入轴上；14) The driving gear of the second cylindrical gear pair is idly sleeved on the input shaft;

15)所述第一转矩传递装置、第一圆柱齿轮副主动齿轮、第二圆柱齿轮副主动齿轮、第二转矩传递装置在输入轴上从靠近输入端到远离输入端地依次排列，所述第三圆柱齿轮副主动齿轮、第一圆柱齿轮副从动齿轮、第二圆柱齿轮副从动齿轮在中间轴上从靠近输入端到远离输入端地依次排列；15) The first torque transmission device, the first spur gear secondary driving gear, the second spur gear secondary driving gear, and the second torque transmission device are arranged sequentially on the input shaft from close to the input end to away from the input end, so The driving gear of the third cylindrical gear pair, the driven gear of the first cylindrical gear pair, and the driven gear of the second cylindrical gear pair are arranged sequentially on the intermediate shaft from close to the input end to away from the input end;

也可以是：所述第一转矩传递装置、第一圆柱齿轮副主动齿轮、第二转矩传递装置、第二圆柱齿轮副主动齿轮在输入轴上从靠近输入端到远离输入端地依次排列，所述第三圆柱齿轮副主动齿轮、第一圆柱齿轮副从动齿轮、第二圆柱齿轮副从动齿轮在中间轴上从靠近输入端到远离输入端地依次排列；It may also be: the first torque transmission device, the first spur gear secondary driving gear, the second torque transmission device, and the second spur gear secondary driving gear are arranged in sequence on the input shaft from close to the input end to away from the input end , the driving gear of the third cylindrical gear pair, the driven gear of the first cylindrical gear pair, and the driven gear of the second cylindrical gear pair are arranged sequentially on the intermediate shaft from close to the input end to away from the input end;

也可以是：所述第一圆柱齿轮副主动齿轮、第一转矩传递装置、第二圆柱齿轮副主动齿轮、第二转矩传递装置在输入轴上从靠近输入端到远离输入端地依次排列，所述第三圆柱齿轮副主动齿轮、第一圆柱齿轮副从动齿轮、第二圆柱齿轮副从动齿轮在中间轴上从靠近输入端到远离输入端地依次排列；It may also be that: the first spur gear secondary driving gear, the first torque transmission device, the second spur gear secondary driving gear, and the second torque transmission device are arranged sequentially on the input shaft from close to the input end to far away from the input end , the driving gear of the third cylindrical gear pair, the driven gear of the first cylindrical gear pair, and the driven gear of the second cylindrical gear pair are arranged sequentially on the intermediate shaft from close to the input end to away from the input end;

也可以是：所述第一圆柱齿轮副主动齿轮、第一转矩传递装置、第二转矩传递装置、第二圆柱齿轮副主动齿轮在输入轴上从靠近输入端到远离输入端地依次排列，所述第三圆柱齿轮副主动齿轮、第一圆柱齿轮副从动齿轮、第二圆柱齿轮副从动齿轮在中间轴上从靠近输入端到远离输入端地依次排列；It may also be: the first spur gear secondary driving gear, the first torque transmission device, the second torque transmission device, and the second spur gear secondary driving gear are arranged in sequence on the input shaft from close to the input end to far away from the input end , the driving gear of the third cylindrical gear pair, the driven gear of the first cylindrical gear pair, and the driven gear of the second cylindrical gear pair are arranged sequentially on the intermediate shaft from close to the input end to away from the input end;

也可以是：所述第一转矩传递装置、第一圆柱齿轮副主动齿轮、第二圆柱齿轮副主动齿轮、第二转矩传递装置在输入轴上从靠近输入端到远离输入端地依次排列，所述第一圆柱齿轮副从动齿轮、第三圆柱齿轮副主动齿轮、第二圆柱齿轮副从动齿轮在中间轴上从靠近输入端到远离输入端地依次排列；It may also be: the first torque transmission device, the first spur gear secondary driving gear, the second spur gear secondary driving gear, and the second torque transmission device are arranged in sequence on the input shaft from close to the input end to away from the input end , the first spur gear secondary driven gear, the third spur gear secondary driven gear, and the second spur gear secondary driven gear are arranged sequentially on the intermediate shaft from close to the input end to away from the input end;

也可以是：所述第一转矩传递装置、第一圆柱齿轮副主动齿轮、第二转矩传递装置、第二圆柱齿轮副主动齿轮在输入轴上从靠近输入端到远离输入端地依次排列，所述第一圆柱齿轮副从动齿轮、第三圆柱齿轮副主动齿轮、第二圆柱齿轮副从动齿轮在中间轴上从靠近输入端到远离输入端地依次排列；It may also be: the first torque transmission device, the first spur gear secondary driving gear, the second torque transmission device, and the second spur gear secondary driving gear are arranged in sequence on the input shaft from close to the input end to away from the input end , the first spur gear secondary driven gear, the third spur gear secondary driven gear, and the second spur gear secondary driven gear are arranged sequentially on the intermediate shaft from close to the input end to away from the input end;

也可以是：所述第一圆柱齿轮副主动齿轮、第一转矩传递装置、第二圆柱齿轮副主动齿轮、第二转矩传递装置在输入轴上从靠近输入端到远离输入端地依次排列，所述第一圆柱齿轮副从动齿轮、第三圆柱齿轮副主动齿轮、第二圆柱齿轮副从动齿轮在中间轴上从靠近输入端到远离输入端地依次排列；It may also be that: the first spur gear secondary driving gear, the first torque transmission device, the second spur gear secondary driving gear, and the second torque transmission device are arranged sequentially on the input shaft from close to the input end to far away from the input end , the first spur gear secondary driven gear, the third spur gear secondary driven gear, and the second spur gear secondary driven gear are arranged sequentially on the intermediate shaft from close to the input end to away from the input end;

也可以是：所述第一圆柱齿轮副主动齿轮、第一转矩传递装置、第二转矩传递装置、第二圆柱齿轮副主动齿轮在输入轴上从靠近输入端到远离输入端地依次排列，所述第一圆柱齿轮副从动齿轮、第三圆柱齿轮副主动齿轮、第二圆柱齿轮副从动齿轮在中间轴上从靠近输入端到远离输入端地依次排列。It may also be: the first spur gear secondary driving gear, the first torque transmission device, the second torque transmission device, and the second spur gear secondary driving gear are arranged in sequence on the input shaft from close to the input end to far away from the input end , the first spur gear secondary driven gear, the third spur gear secondary driven gear, and the second spur gear secondary driven gear are arranged sequentially on the intermediate shaft from close to the input end to away from the input end.

它们的设计参数为：Their design parameters are:

1)所述输入轴直径不大于200毫米；1) The diameter of the input shaft is not greater than 200 mm;

2)所述中间轴直径不大于200毫米；2) The diameter of the intermediate shaft is not greater than 200 mm;

3)所述第一圆柱齿轮副、第二圆柱齿轮副和第三圆柱齿轮副法向模数不大于10.00毫米；3) The normal modulus of the first cylindrical gear pair, the second cylindrical gear pair and the third cylindrical gear pair is not greater than 10.00 mm;

4)所述第一圆柱齿轮副主动齿轮、第二圆柱齿轮副主动齿轮和第三圆柱齿轮副主动齿轮齿数不多于100个；4) The number of teeth of the driving gear of the first cylindrical gear pair, the driving gear of the second cylindrical gear pair and the driving gear of the third cylindrical gear pair is not more than 100;

5)所述第一圆柱齿轮副从动齿轮、第二圆柱齿轮副从动齿轮和第三圆柱齿轮副从动齿轮齿数不多于200个；5) The number of teeth of the driven gear of the first cylindrical gear pair, the driven gear of the second cylindrical gear pair and the driven gear of the third cylindrical gear pair is not more than 200;

6)所述第一转矩传递装置和第二转矩传递装置转矩容量不大于2000牛顿米。6) The torque capacities of the first torque transmission device and the second torque transmission device are not greater than 2000 Nm.

本发明中涉及的传动方案通过控制所述第一转矩传递装置和第二转矩传递装置的接合或分离，产生一挡和二挡两个挡位。本发明的工作原理简介如下：The transmission scheme involved in the present invention generates two gears, first gear and second gear, by controlling the engagement or disengagement of the first torque transmission device and the second torque transmission device. The working principle of the present invention is briefly as follows:

1)当所述第一转矩传递装置和第二转矩传递装置都处于分离状态时，该纯电动汽车用两挡自动变速器的自由度为2，动力无法从输入轴传递至差速器总成；1) When the first torque transmission device and the second torque transmission device are both in the disengaged state, the degree of freedom of the two-speed automatic transmission for pure electric vehicles is 2, and the power cannot be transmitted from the input shaft to the differential gear assembly. become;

2)当所述第一转矩传递装置处于接合状态、第二转矩传递装置处于分离状态时，该纯电动汽车用两挡自动变速器的自由度为1，处于一挡，动力从输入轴经第一转矩传递装置、第一圆柱齿轮副、中间轴和第三圆柱齿轮副传递至差速器总成，输入轴与第三圆柱齿轮副从动齿轮转速的比值为一挡的传动比；2) When the first torque transmission device is in the engaged state and the second torque transmission device is in the disengaged state, the degree of freedom of the two-speed automatic transmission for pure electric vehicles is 1, and it is in the first gear, and the power is transmitted from the input shaft through The first torque transmission device, the first spur gear pair, the intermediate shaft and the third spur gear pair are transmitted to the differential assembly, and the ratio of the rotational speed of the input shaft to the driven gear of the third spur gear pair is the transmission ratio of the first gear;

3)当所述第二转矩传递装置处于接合状态、第一转矩传递装置处于分离状态时，该纯电动汽车用两挡自动变速器的自由度为1，处于二挡，动力从输入轴经第二转矩传递装置、第二圆柱齿轮副、中间轴和第三圆柱齿轮副传递至差速器总成，输入轴与第三圆柱齿轮副从动齿轮转速的比值为二挡的传动比。3) When the second torque transmission device is in the engaged state and the first torque transmission device is in the disengaged state, the degree of freedom of the two-speed automatic transmission for pure electric vehicles is 1, and it is in the second gear, and the power is transmitted from the input shaft through The second torque transmission device, the second spur gear pair, the intermediate shaft and the third spur gear pair are transmitted to the differential assembly, and the ratio of the input shaft to the driven gear speed of the third spur gear pair is the transmission ratio of the second gear.

4)其中，当输入轴正向旋转时，所述一挡和二挡为前进一挡和前进二挡；当输入轴反向旋转时，所述一挡和二挡为倒一挡和倒二挡。所述前进一挡与倒一挡的传动比相同，为7～17；所述前进二挡与倒二挡的传动比相同，为3～13。4) Wherein, when the input shaft rotates forward, the first gear and the second gear are forward first gear and forward second gear; when the input shaft rotates reversely, the first gear and second gear are reverse first gear and reverse second gear block. The transmission ratios of the first forward gear and the first reverse gear are the same, ranging from 7 to 17; the transmission ratios of the second forward gear and the second reverse gear are the same, ranging from 3 to 13.

(3)优点(3) Advantages

1)本发明将驱动电机、自动变速器与驱动桥集成为一体，结构简单紧凑、质量较轻，可以大幅降低制造成本；1) The present invention integrates the drive motor, the automatic transmission and the drive axle, has a simple and compact structure, is light in weight, and can greatly reduce manufacturing costs;

2)本发明的传动方案采用两挡自动变速，扩大了传动比范围，可以大幅降低对驱动电机的性能要求，允许采用高效率、轻量化的驱动电机，进一步降低纯电动汽车电驱动系统的总体积、总质量、总成本；2) The transmission scheme of the present invention adopts two-speed automatic transmission, which expands the transmission ratio range, can greatly reduce the performance requirements for the drive motor, allows the use of high-efficiency, lightweight drive motors, and further reduces the total cost of the electric drive system of pure electric vehicles. volume, total mass, total cost;

3)本发明结构简单紧凑、传动平稳、传动比范围宽，既可以使纯电动汽车获得更好的动力性能，也能够让电机更多地运行在高效率区，降低能耗水平，增加续驶里程，提高整车的动力性和经济性；3) The present invention has a simple and compact structure, stable transmission, and a wide range of transmission ratios, which can not only enable pure electric vehicles to obtain better power performance, but also allow motors to run more in high-efficiency areas, reduce energy consumption levels, and increase continuous driving Mileage, improve the power and economy of the vehicle;

4)本发明各个挡位的传动损失都较小，具备极高的功率传递效率；4) The transmission loss of each gear in the present invention is small, and has extremely high power transmission efficiency;

5)本发明的所有转矩传递装置都可以选择性地与输入轴相连，所需转矩容量较小，有利于减少转矩传递装置的磨损，并有利于缩小转矩传递装置的尺寸，进一步降低纯电动汽车电驱动系统的总体积、总质量、总成本。5) All torque transmission devices of the present invention can be selectively connected with the input shaft, and the required torque capacity is relatively small, which is conducive to reducing the wear and tear of the torque transmission device, and is conducive to reducing the size of the torque transmission device, further Reduce the total volume, total mass and total cost of the pure electric vehicle electric drive system.

附图说明Description of drawings

图1是本发明的实施例1的结构示意图，图2是本发明的实施例2的结构示意图，图3是本发明的实施例3的结构示意图，图4是本发明的实施例4的结构示意图，图5是本发明的实施例5的结构示意图，图6是本发明的实施例6的结构示意图，图7是本发明的实施例7的结构示意图，图8是本发明的实施例8的结构示意图，图中序号、符号、代号、单位说明如下：Fig. 1 is a schematic structural view of embodiment 1 of the present invention, Fig. 2 is a schematic structural view of embodiment 2 of the present invention, Fig. 3 is a schematic structural view of embodiment 3 of the present invention, Fig. 4 is a structure of embodiment 4 of the present invention Schematic diagram, Figure 5 is a schematic structural view of Embodiment 5 of the present invention, Figure 6 is a schematic structural view of Embodiment 6 of the present invention, Figure 7 is a schematic structural view of Embodiment 7 of the present invention, and Figure 8 is a schematic structural view of Embodiment 8 of the present invention Schematic diagram of the structure, the serial numbers, symbols, codes and units in the figure are as follows:

1输入轴；2中间轴；3第一圆柱齿轮副主动齿轮；4第一圆柱齿轮副从动齿轮；5第二圆柱齿轮副主动齿轮；6第二圆柱齿轮副从动齿轮；7第三圆柱齿轮副主动齿轮；8第三圆柱齿轮副从动齿轮；9第一转矩传递装置主动端；10第一转矩传递装置从动端；11第二转矩传递装置主动端；12第二转矩传递装置从动端；13差速器总成；G1第一圆柱齿轮副；G2第二圆柱齿轮副；G3第三圆柱齿轮副；C1第一转矩传动装置；C2第二转矩传动装置。1 Input shaft; 2 Intermediate shaft; 3 Driving gear of the first cylindrical gear pair; 4 Driven gear of the first cylindrical gear pair; 5 Driving gear of the second cylindrical gear pair; 6 Driven gear of the second cylindrical gear pair; 7 Third cylindrical gear Gear pair driving gear; 8 third cylindrical gear pair driven gear; 9 first torque transmission device driving end; 10 first torque transmission device driven end; 11 second torque transmission device driving end; 12 second rotation Driven end of torque transmission device; 13 differential assembly; G1 first cylindrical gear pair; G2 second cylindrical gear pair; G3 third cylindrical gear pair; C1 first torque transmission device; C2 second torque transmission device .

具体实施方式Detailed ways

实施例1如图1所示，本发明一种纯电动汽车用两挡自动变速器，包含输入轴1、中间轴2、第一圆柱齿轮副G1、第二圆柱齿轮副G2、第三圆柱齿轮副G3、第一转矩传递装置C1、第二转矩传递装置C2，以及差速器总成13。其中：Embodiment 1 As shown in Figure 1, a two-speed automatic transmission for pure electric vehicles in the present invention includes an input shaft 1, an intermediate shaft 2, a first cylindrical gear pair G1, a second cylindrical gear pair G2, and a third cylindrical gear pair G3 , the first torque transmission device C1 , the second torque transmission device C2 , and the differential assembly 13 . in:

1)所述输入轴1横截面为圆形；1) The cross section of the input shaft 1 is circular;

2)所述中间轴2横截面为圆形；2) The cross section of the intermediate shaft 2 is circular;

3)所述第一圆柱齿轮副G1为斜齿圆柱齿轮副，包括第一圆柱齿轮副主动齿轮3和第一圆柱齿轮副从动齿轮4；3) The first cylindrical gear pair G1 is a helical cylindrical gear pair, including the first cylindrical gear pair driving gear 3 and the first cylindrical gear pair driven gear 4;

4)所述第二圆柱齿轮副G2为斜齿圆柱齿轮副，包括第二圆柱齿轮副主动齿轮5和第二圆柱齿轮副从动齿轮6；4) The second cylindrical gear pair G2 is a helical cylindrical gear pair, including the second cylindrical gear pair driving gear 5 and the second cylindrical gear pair driven gear 6;

5)所述第三圆柱齿轮副G3为斜齿圆柱齿轮副，包括第三圆柱齿轮副主动齿轮7和第三圆柱齿轮副从动齿轮8；5) The third cylindrical gear pair G3 is a helical cylindrical gear pair, including the third cylindrical gear pair driving gear 7 and the third cylindrical gear pair driven gear 8;

6)所述第一转矩传递装置C1为多片式湿式离合器，包括第一转矩传递装置主动端9和第一转矩传递装置从动端10，其中，所述第一转矩传递装置主动端9和第一转矩传递装置从动端10可以选择性地接合，将输入轴1和第一圆柱齿轮副主动齿轮3暂时地连接起来；6) The first torque transmission device C1 is a multi-plate wet clutch, including a first torque transmission device driving end 9 and a first torque transmission device driven end 10, wherein the first torque transmission device The driving end 9 and the driven end 10 of the first torque transmission device are selectively engageable, temporarily connecting the input shaft 1 and the driving gear 3 of the first spur gear pair;

7)所述第二转矩传递装置C2为多片式湿式离合器，包括第二转矩传递装置主动端11和第二转矩传递装置从动端12，其中，所述第二转矩传递装置主动端11和第二转矩传递装置从动端12可以选择性地接合，将输入轴1和第二圆柱齿轮副主动齿轮5暂时地连接起来；7) The second torque transmission device C2 is a multi-plate wet clutch, including a second torque transmission device driving end 11 and a second torque transmission device driven end 12, wherein the second torque transmission device The driving end 11 and the driven end 12 of the second torque transmission device are selectively engageable, temporarily connecting the input shaft 1 and the driving gear 5 of the second spur gear pair;

8)所述差速器总成13选用桑塔纳2000型轿车差速器。8) The differential gear assembly 13 is a Santana 2000 car differential gear.

1)所述输入轴1、中间轴2以及差速器总成13的旋转中心线相互平行；1) The rotation centerlines of the input shaft 1, the intermediate shaft 2 and the differential assembly 13 are parallel to each other;

2)所述输入轴1、第一转矩传递装置C1、第二转矩传递装置C2、第一圆柱齿轮副主动齿轮3和第二圆柱齿轮副主动齿轮5的旋转中心线重合；2) The rotation centerlines of the input shaft 1, the first torque transmission device C1, the second torque transmission device C2, the first spur gear secondary driving gear 3 and the second cylindrical gear secondary driving gear 5 coincide;

3)所述中间轴2、第一圆柱齿轮副从动齿轮4、第二圆柱齿轮副从动齿轮6和第三圆柱齿轮副主动齿轮7的旋转中心线重合；3) The centerlines of rotation of the intermediate shaft 2, the first spur gear secondary driven gear 4, the second spur gear secondary driven gear 6 and the third spur gear secondary driving gear 7 coincide;

4)所述差速器总成13和第三圆柱齿轮副从动齿轮8的旋转中心线重合；4) The centerlines of rotation of the differential assembly 13 and the third cylindrical gear secondary driven gear 8 coincide;

5)所述输入轴1与第一转矩传递装置主动端9固定连接；5) The input shaft 1 is fixedly connected to the driving end 9 of the first torque transmission device;

6)所述输入轴1与第二转矩传递装置主动端11固定连接；6) The input shaft 1 is fixedly connected to the driving end 11 of the second torque transmission device;

7)所述中间轴2与第一圆柱齿轮副从动齿轮4固定连接；7) The intermediate shaft 2 is fixedly connected to the driven gear 4 of the first cylindrical gear pair;

8)所述中间轴2与第二圆柱齿轮副从动齿轮6固定连接。8) The intermediate shaft 2 is fixedly connected with the second cylindrical gear secondary driven gear 6 .

9)所述中间轴2与第三圆柱齿轮副主动齿轮7固定连接；9) The intermediate shaft 2 is fixedly connected with the driving gear 7 of the third cylindrical gear pair;

10)所述差速器总成13的外壳与第三圆柱齿轮副从动齿轮8固定连接；10) The shell of the differential gear assembly 13 is fixedly connected with the driven gear 8 of the third spur gear pair;

11)所述第一圆柱齿轮副主动齿轮3与第一转矩传递装置从动端10固定连接；11) The driving gear 3 of the first cylindrical gear pair is fixedly connected to the driven end 10 of the first torque transmission device;

12)所述第二圆柱齿轮副主动齿轮5与第二转矩传递装置从动端12固定连接；12) The driving gear 5 of the second cylindrical gear pair is fixedly connected with the driven end 12 of the second torque transmission device;

13)所述第一圆柱齿轮副主动齿轮3空套在输入轴1上；13) The driving gear 3 of the first cylindrical gear pair is idly sleeved on the input shaft 1;

14)所述第二圆柱齿轮副主动齿轮5空套在输入轴1上；14) The driving gear 5 of the second cylindrical gear pair is idly sleeved on the input shaft 1;

15)所述第一转矩传递装置C1、第一圆柱齿轮副主动齿轮3、第二圆柱齿轮副主动齿轮5、第二转矩传递装置C2在输入轴1上从靠近输入端到远离输入端地依次排列，所述第三圆柱齿轮副主动齿轮7、第一圆柱齿轮副从动齿轮4、第二圆柱齿轮副从动齿轮6在中间轴2上从靠近输入端到远离输入端地依次排列。15) The first torque transmission device C1, the first cylindrical gear secondary driving gear 3, the second cylindrical gear secondary driving gear 5, and the second torque transmission device C2 are on the input shaft 1 from close to the input end to far away from the input end The third cylindrical gear secondary driven gear 7, the first cylindrical gear secondary driven gear 4, and the second cylindrical gear secondary driven gear 6 are arranged sequentially on the intermediate shaft 2 from close to the input end to away from the input end .

它们的设计参数为：Their design parameters are:

1)所述输入轴1直径为25毫米；1) The diameter of the input shaft 1 is 25 millimeters;

2)所述中间轴2直径为60毫米；2) The diameter of the intermediate shaft 2 is 60 mm;

3)所述第一圆柱齿轮副G1、第二圆柱齿轮副G2和第三圆柱齿轮副G3法向模数分别为1.75毫米、1.75毫米和2.00毫米；3) The normal modules of the first cylindrical gear pair G1, the second cylindrical gear pair G2 and the third cylindrical gear pair G3 are 1.75 mm, 1.75 mm and 2.00 mm respectively;

4)所述第一圆柱齿轮副主动齿轮3、第二圆柱齿轮副主动齿轮5和第三圆柱齿轮副主动齿轮7齿数分别为29个、37个和39个；4) The number of teeth of the first cylindrical gear pair driving gear 3, the second cylindrical gear pair driving gear 5 and the third cylindrical gear pair driving gear 7 are 29, 37 and 39 respectively;

5)所述第一圆柱齿轮副从动齿轮4、第二圆柱齿轮副从动齿轮6和第三圆柱齿轮副从动齿轮8齿数分别为100个、92个和98个；5) The number of teeth of the first cylindrical gear secondary driven gear 4, the second cylindrical gear secondary driven gear 6 and the third cylindrical gear secondary driven gear 8 are 100, 92 and 98 respectively;

6)所述第一转矩传递装置C1和第二转矩传递装置C2转矩容量均为330牛顿米。6) The torque capacities of the first torque transmission device C1 and the second torque transmission device C2 are both 330 Nm.

本发明中涉及的传动方案通过控制所述第一转矩传递装置C1和第二转矩传递装置C2的接合或分离，产生一挡和二挡两个挡位。本发明的工作原理简介如下：The transmission scheme involved in the present invention generates two gears, the first gear and the second gear, by controlling the engagement or disengagement of the first torque transmission device C1 and the second torque transmission device C2. The working principle of the present invention is briefly as follows:

1)当所述第一转矩传递装置C1和第二转矩传递装置C2都处于分离状态时，该纯电动汽车用两挡自动变速器的自由度为2，动力无法从输入轴1传递至差速器总成13；1) When the first torque transmission device C1 and the second torque transmission device C2 are both in the disengaged state, the degree of freedom of the two-speed automatic transmission for pure electric vehicles is 2, and the power cannot be transmitted from the input shaft 1 to the differential Gear assembly 13;

2)当所述第一转矩传递装置C1处于接合状态、第二转矩传递装置C2处于分离状态时，该纯电动汽车用两挡自动变速器的自由度为1，处于一挡，动力从输入轴1经第一转矩传递装置C1、第一圆柱齿轮副G1、中间轴2和第三圆柱齿轮副G3传递至差速器总成13，输入轴1与第三圆柱齿轮副从动齿轮8转速的比值为一挡的传动比；2) When the first torque transmission device C1 is in the engaged state and the second torque transmission device C2 is in the disengaged state, the degree of freedom of the two-speed automatic transmission for pure electric vehicles is 1, it is in the first gear, and the power is input from the The shaft 1 is transmitted to the differential assembly 13 through the first torque transmission device C1, the first spur gear pair G1, the intermediate shaft 2 and the third spur gear pair G3, and the input shaft 1 and the third spur gear pair driven gear 8 The speed ratio is the transmission ratio of the first gear;

3)当所述第二转矩传递装置C2处于接合状态、第一转矩传递装置C1处于分离状态时，该纯电动汽车用两挡自动变速器的自由度为1，处于二挡，动力从输入轴1经第二转矩传递装置C2、第二圆柱齿轮副G2、中间轴2和第三圆柱齿轮副G3传递至差速器总成13，输入轴1与第三圆柱齿轮副从动齿轮8转速的比值为二挡的传动比。3) When the second torque transmission device C2 is in the engaged state and the first torque transmission device C1 is in the disengaged state, the degree of freedom of the two-speed automatic transmission for pure electric vehicles is 1, it is in the second gear, and the power is input from the The shaft 1 is transmitted to the differential assembly 13 through the second torque transmission device C2, the second spur gear pair G2, the intermediate shaft 2 and the third spur gear pair G3, and the input shaft 1 and the third spur gear pair driven gear 8 The speed ratio is the transmission ratio of the second gear.

4)其中，当输入轴1正向旋转时，所述一挡和二挡为前进一挡和前进二挡；当输入轴1反向旋转时，所述一挡和二挡为倒一挡和倒二挡。所述前进一挡与倒一挡的传动比相同，为8.6649；所述前进二挡与倒二挡的传动比相同，为6.2481。4) Wherein, when the input shaft 1 rotates forward, the first gear and the second gear are the forward first gear and the forward second gear; when the input shaft 1 rotates reversely, the first gear and the second gear are the reverse first gear and the forward second gear. Reverse second gear. The transmission ratio of the first forward gear and the first reverse gear is the same, which is 8.6649; the transmission ratio of the second forward gear and the second reverse gear is the same, which is 6.2481.

实施例2如图2所示，本发明一种纯电动汽车用两挡自动变速器，包含输入轴1、中间轴2、第一圆柱齿轮副G1、第二圆柱齿轮副G2、第三圆柱齿轮副G3、第一转矩传递装置C1、第二转矩传递装置C2，以及差速器总成13。其中：Embodiment 2 As shown in Figure 2, a two-speed automatic transmission for pure electric vehicles in the present invention includes an input shaft 1, an intermediate shaft 2, a first cylindrical gear pair G1, a second cylindrical gear pair G2, and a third cylindrical gear pair G3 , the first torque transmission device C1 , the second torque transmission device C2 , and the differential assembly 13 . in:

2)所述输入轴1、第一转矩传递装置C1、第二转矩传递装置C2、第一圆柱齿轮副主动2) The input shaft 1, the first torque transmission device C1, the second torque transmission device C2, and the first cylindrical gear pair drive

齿轮3和第二圆柱齿轮副主动齿轮5的旋转中心线重合；The centerlines of rotation of the gear 3 and the driving gear 5 of the second cylindrical gear pair coincide;

15)所述第一转矩传递装置C1、第一圆柱齿轮副主动齿轮3、第二转矩传递装置C2、第二圆柱齿轮副主动齿轮5在输入轴1上从靠近输入端到远离输入端地依次排列，所述第三圆柱齿轮副主动齿轮7、第一圆柱齿轮副从动齿轮4、第二圆柱齿轮副从动齿轮6在中间轴2上从靠近输入端到远离输入端地依次排列。15) The first torque transmission device C1, the first spur gear auxiliary driving gear 3, the second torque transmission device C2, and the second cylindrical gear auxiliary driving gear 5 are on the input shaft 1 from close to the input end to far away from the input end The third cylindrical gear secondary driven gear 7, the first cylindrical gear secondary driven gear 4, and the second cylindrical gear secondary driven gear 6 are arranged sequentially on the intermediate shaft 2 from close to the input end to away from the input end .

它们的设计参数为：Their design parameters are:

实施例3如图3所示，本发明一种纯电动汽车用两挡自动变速器，包含输入轴1、中间轴2、第一圆柱齿轮副G1、第二圆柱齿轮副G2、第三圆柱齿轮副G3、第一转矩传递装置C1、第二转矩传递装置C2，以及差速器总成13。其中：Embodiment 3 As shown in Figure 3, a two-speed automatic transmission for pure electric vehicles in the present invention includes an input shaft 1, an intermediate shaft 2, a first cylindrical gear pair G1, a second cylindrical gear pair G2, and a third cylindrical gear pair G3 , the first torque transmission device C1 , the second torque transmission device C2 , and the differential assembly 13 . in:

15)所述第一圆柱齿轮副主动齿轮3、第一转矩传递装置C1、第二圆柱齿轮副主动齿轮5、第二转矩传递装置C2在输入轴1上从靠近输入端到远离输入端地依次排列，所述第三圆柱齿轮副主动齿轮7、第一圆柱齿轮副从动齿轮4、第二圆柱齿轮副从动齿轮6在中间轴2上从靠近输入端到远离输入端地依次排列。15) The first spur gear secondary driving gear 3, the first torque transmission device C1, the second spur gear secondary driving gear 5, and the second torque transmission device C2 are on the input shaft 1 from close to the input end to far away from the input end The third cylindrical gear secondary driven gear 7, the first cylindrical gear secondary driven gear 4, and the second cylindrical gear secondary driven gear 6 are arranged sequentially on the intermediate shaft 2 from close to the input end to away from the input end .

它们的设计参数为：Their design parameters are:

实施例4如图4所示，本发明一种纯电动汽车用两挡自动变速器，包含输入轴1、中间轴2、第一圆柱齿轮副G1、第二圆柱齿轮副G2、第三圆柱齿轮副G3、第一转矩传递装置C1、第二转矩传递装置C2，以及差速器总成13。其中：Embodiment 4 As shown in Figure 4, a two-speed automatic transmission for pure electric vehicles in the present invention includes an input shaft 1, an intermediate shaft 2, a first cylindrical gear pair G1, a second cylindrical gear pair G2, and a third cylindrical gear pair G3 , the first torque transmission device C1 , the second torque transmission device C2 , and the differential assembly 13 . in:

15)所述第一圆柱齿轮副主动齿轮3、第一转矩传递装置C1、第二转矩传递装置C2、第二圆柱齿轮副主动齿轮5在输入轴1上从靠近输入端到远离输入端地依次排列，所述第三圆柱齿轮副主动齿轮7、第一圆柱齿轮副从动齿轮4、第二圆柱齿轮副从动齿轮6在中间轴2上从靠近输入端到远离输入端地依次排列。15) The first spur gear secondary driving gear 3, the first torque transmission device C1, the second torque transmission device C2, and the second spur gear secondary driving gear 5 are on the input shaft 1 from close to the input end to far away from the input end The third cylindrical gear secondary driven gear 7, the first cylindrical gear secondary driven gear 4, and the second cylindrical gear secondary driven gear 6 are arranged sequentially on the intermediate shaft 2 from close to the input end to away from the input end .

它们的设计参数为：Their design parameters are:

实施例5如图5所示，本发明一种纯电动汽车用两挡自动变速器，包含输入轴1、中间轴2、第一圆柱齿轮副G1、第二圆柱齿轮副G2、第三圆柱齿轮副G3、第一转矩传递装置C1、第二转矩传递装置C2，以及差速器总成13。其中：Embodiment 5 As shown in Figure 5, a two-speed automatic transmission for pure electric vehicles in the present invention includes an input shaft 1, an intermediate shaft 2, a first cylindrical gear pair G1, a second cylindrical gear pair G2, and a third cylindrical gear pair G3 , the first torque transmission device C1 , the second torque transmission device C2 , and the differential assembly 13 . in:

15)所述第一转矩传递装置C1、第一圆柱齿轮副主动齿轮3、第二圆柱齿轮副主动齿轮5、第二转矩传递装置C2在输入轴1上从靠近输入端到远离输入端地依次排列，所述第一圆柱齿轮副从动齿轮4、第三圆柱齿轮副主动齿轮7、第二圆柱齿轮副从动齿轮6在中间轴2上从靠近输入端到远离输入端地依次排列。15) The first torque transmission device C1, the first cylindrical gear secondary driving gear 3, the second cylindrical gear secondary driving gear 5, and the second torque transmission device C2 are on the input shaft 1 from close to the input end to far away from the input end The first spur gear secondary driven gear 4, the third spur gear secondary driven gear 7, and the second spur gear secondary driven gear 6 are arranged sequentially on the intermediate shaft 2 from close to the input end to away from the input end .

它们的设计参数为：Their design parameters are:

实施例6如图6所示，本发明一种纯电动汽车用两挡自动变速器，包含输入轴1、中间轴2、第一圆柱齿轮副G1、第二圆柱齿轮副G2、第三圆柱齿轮副G3、第一转矩传递装置C1、第二转矩传递装置C2，以及差速器总成13。其中：Embodiment 6 As shown in Figure 6, a two-speed automatic transmission for pure electric vehicles in the present invention includes an input shaft 1, an intermediate shaft 2, a first cylindrical gear pair G1, a second cylindrical gear pair G2, and a third cylindrical gear pair G3 , the first torque transmission device C1 , the second torque transmission device C2 , and the differential assembly 13 . in:

15)所述第一转矩传递装置C1、第一圆柱齿轮副主动齿轮3、第二转矩传递装置C2、第二圆柱齿轮副主动齿轮5在输入轴1上从靠近输入端到远离输入端地依次排列，所述第一圆柱齿轮副从动齿轮4、第三圆柱齿轮副主动齿轮7、第二圆柱齿轮副从动齿轮6在中间轴2上从靠近输入端到远离输入端地依次排列。15) The first torque transmission device C1, the first spur gear auxiliary driving gear 3, the second torque transmission device C2, and the second cylindrical gear auxiliary driving gear 5 are on the input shaft 1 from close to the input end to far away from the input end The first spur gear secondary driven gear 4, the third spur gear secondary driven gear 7, and the second spur gear secondary driven gear 6 are arranged sequentially on the intermediate shaft 2 from close to the input end to away from the input end .

它们的设计参数为：Their design parameters are:

实施例7如图7所示，本发明一种纯电动汽车用两挡自动变速器，包含输入轴1、中间轴2、第一圆柱齿轮副G1、第二圆柱齿轮副G2、第三圆柱齿轮副G3、第一转矩传递装置C1、第二转矩传递装置C2，以及差速器总成13。其中：Embodiment 7 As shown in Figure 7, a two-speed automatic transmission for pure electric vehicles in the present invention includes an input shaft 1, an intermediate shaft 2, a first cylindrical gear pair G1, a second cylindrical gear pair G2, and a third cylindrical gear pair G3 , the first torque transmission device C1 , the second torque transmission device C2 , and the differential assembly 13 . in:

15)所述第一圆柱齿轮副主动齿轮3、第一转矩传递装置C1、第二圆柱齿轮副主动齿轮5、第二转矩传递装置C2在输入轴1上从靠近输入端到远离输入端地依次排列，所述第一圆柱齿轮副从动齿轮4、第三圆柱齿轮副主动齿轮7、第二圆柱齿轮副从动齿轮6在中间轴2上从靠近输入端到远离输入端地依次排列。15) The first spur gear secondary driving gear 3, the first torque transmission device C1, the second spur gear secondary driving gear 5, and the second torque transmission device C2 are on the input shaft 1 from close to the input end to far away from the input end The first spur gear secondary driven gear 4, the third spur gear secondary driven gear 7, and the second spur gear secondary driven gear 6 are arranged sequentially on the intermediate shaft 2 from close to the input end to away from the input end .

它们的设计参数为：Their design parameters are:

实施例8如图8所示，本发明一种纯电动汽车用两挡自动变速器，包含输入轴1、中间轴2、第一圆柱齿轮副G1、第二圆柱齿轮副G2、第三圆柱齿轮副G3、第一转矩传递装置C1、第二转矩传递装置C2，以及差速器总成13。其中：Embodiment 8 As shown in Figure 8, a two-speed automatic transmission for pure electric vehicles according to the present invention includes an input shaft 1, an intermediate shaft 2, a first cylindrical gear pair G1, a second cylindrical gear pair G2, and a third cylindrical gear pair G3 , the first torque transmission device C1 , the second torque transmission device C2 , and the differential assembly 13 . in:

15)所述第一圆柱齿轮副主动齿轮3、第一转矩传递装置C1、第二转矩传递装置C2、第二圆柱齿轮副主动齿轮5在输入轴1上从靠近输入端到远离输入端地依次排列，所述第一圆柱齿轮副从动齿轮4、第三圆柱齿轮副主动齿轮7、第二圆柱齿轮副从动齿轮6在中间轴2上从靠近输入端到远离输入端地依次排列。15) The first spur gear secondary driving gear 3, the first torque transmission device C1, the second torque transmission device C2, and the second spur gear secondary driving gear 5 are on the input shaft 1 from close to the input end to far away from the input end The first spur gear secondary driven gear 4, the third spur gear secondary driven gear 7, and the second spur gear secondary driven gear 6 are arranged sequentially on the intermediate shaft 2 from close to the input end to away from the input end .

它们的设计参数为：Their design parameters are:

最后说明的是，以上实施例仅用以说明本发明的技术方案而非限制，尽管参照较佳实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的宗旨和范围，其均应涵盖在本发明的权利要求范围当中。Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims

1. a pure electric automobile two-shift automatic speed variator, it is characterized in that: it comprises input shaft, jack shaft, the first cylindrical gear pair, the second cylindrical gear pair, three cylindrical gear pair, the first torque transmitter, the second torque transmitter, and differential assembly; Wherein:

1) described input shaft cross section is circular;

2) described jack shaft cross section is circular;

3) described first cylindrical gear pair is the one in the secondary and helical gear pair of straight toothed spur gear, comprises the first cylindrical gear pair driving gear and the first cylindrical gear pair driven gear;

4) described second cylindrical gear pair is the one in the secondary and helical gear pair of straight toothed spur gear, comprises the second cylindrical gear pair driving gear and the second cylindrical gear pair driven gear;

5) described three cylindrical gear pair is the one in the secondary and helical gear pair of straight toothed spur gear, comprises three cylindrical gear pair driving gear and three cylindrical gear pair driven gear;

6) described first torque transmitter is the one in clutch, synchronizer and clutch collar three, comprise the first torque transmitter drive end and the first torque transmitter driven end, wherein, described first torque transmitter drive end and the first torque transmitter driven end can optionally engage, and input shaft and the first cylindrical gear pair driving gear are temporarily coupled together;

7) described second torque transmitter is the one in clutch, synchronizer and clutch collar three, comprise the second torque transmitter drive end and the second torque transmitter driven end, wherein, described second torque transmitter drive end and the second torque transmitter driven end can optionally engage, and input shaft and the second cylindrical gear pair driving gear are temporarily coupled together;

8) described differential assembly selects the off-the-shelf on market;

Correlation optimized project between them is:

1) rotation centerline of described input shaft, jack shaft and differential assembly is parallel to each other;

2) rotation centerline of described input shaft, the first torque transmitter, the second torque transmitter, the first cylindrical gear pair driving gear and the second cylindrical gear pair driving gear overlaps;

3) rotation centerline of described jack shaft, the first cylindrical gear pair driven gear, the second cylindrical gear pair driven gear and three cylindrical gear pair driving gear overlaps;

4) rotation centerline of described differential assembly and three cylindrical gear pair driven gear overlaps;

5) described input shaft is fixedly connected with the first torque transmitter drive end;

6) described input shaft is fixedly connected with the second torque transmitter drive end;

7) described jack shaft is fixedly connected with the first cylindrical gear pair driven gear;

8) described jack shaft is fixedly connected with the second cylindrical gear pair driven gear;

9) described jack shaft is fixedly connected with three cylindrical gear pair driving gear;

10) shell of described differential assembly is fixedly connected with three cylindrical gear pair driven gear;

11) described first cylindrical gear pair driving gear is fixedly connected with the first torque transmitter driven end;

12) described second cylindrical gear pair driving gear is fixedly connected with the second torque transmitter driven end;

13) described first cylindrical gear pair driving gear empty set is on input shaft;

14) described second cylindrical gear pair driving gear empty set is on input shaft;

15) described first torque transmitter, the first cylindrical gear pair driving gear, the second cylindrical gear pair driving gear, the second torque transmitter are arranged in order near input end to away from input end on input shaft, and described three cylindrical gear pair driving gear, the first cylindrical gear pair driven gear, the second cylindrical gear pair driven gear are arranged in order near input end to away from input end on jack shaft;

Their design parameter is:

1) described input shaft diameter is not more than 200 millimeters;

2) described jack shaft diameter is not more than 200 millimeters;

3) described first cylindrical gear pair, the second cylindrical gear pair and three cylindrical gear pair normal module are not more than 10.00 millimeters;

4) described first cylindrical gear pair driving gear, the second cylindrical gear pair driving gear and no more than 100 of the three cylindrical gear pair driving gear number of teeth;

5) described first cylindrical gear pair driven gear, the second cylindrical gear pair driven gear and no more than 200 of the three cylindrical gear pair driven gear number of teeth;

6) described first torque transmitter and the second torque transmitter torque capacity are not more than 2000 Newton meters.

2. a kind of pure electric automobile two-shift automatic speed variator according to claim 1, it is characterized in that: the in described correlation optimized project the 15th) item also can be: described first torque transmitter, first cylindrical gear pair driving gear, second torque transmitter, second cylindrical gear pair driving gear is arranged in order near input end to away from input end on input shaft, described three cylindrical gear pair driving gear, first cylindrical gear pair driven gear, second cylindrical gear pair driven gear is arranged in order near input end to away from input end on jack shaft.

3. a kind of pure electric automobile two-shift automatic speed variator according to claim 1, it is characterized in that: the in described correlation optimized project the 15th) item also can be: described first cylindrical gear pair driving gear, first torque transmitter, second cylindrical gear pair driving gear, second torque transmitter is arranged in order near input end to away from input end on input shaft, described three cylindrical gear pair driving gear, first cylindrical gear pair driven gear, second cylindrical gear pair driven gear is arranged in order near input end to away from input end on jack shaft.

4. a kind of pure electric automobile two-shift automatic speed variator according to claim 1, it is characterized in that: the in described correlation optimized project the 15th) item also can be: described first cylindrical gear pair driving gear, first torque transmitter, second torque transmitter, second cylindrical gear pair driving gear is arranged in order near input end to away from input end on input shaft, described three cylindrical gear pair driving gear, first cylindrical gear pair driven gear, second cylindrical gear pair driven gear is arranged in order near input end to away from input end on jack shaft.

5. a kind of pure electric automobile two-shift automatic speed variator according to claim 1, it is characterized in that: the in described correlation optimized project the 15th) item also can be: described first torque transmitter, first cylindrical gear pair driving gear, second cylindrical gear pair driving gear, second torque transmitter is arranged in order near input end to away from input end on input shaft, described first cylindrical gear pair driven gear, three cylindrical gear pair driving gear, second cylindrical gear pair driven gear is arranged in order near input end to away from input end on jack shaft.

6. a kind of pure electric automobile two-shift automatic speed variator according to claim 1, it is characterized in that: the in described correlation optimized project the 15th) item also can be: described first torque transmitter, first cylindrical gear pair driving gear, second torque transmitter, second cylindrical gear pair driving gear is arranged in order near input end to away from input end on input shaft, described first cylindrical gear pair driven gear, three cylindrical gear pair driving gear, second cylindrical gear pair driven gear is arranged in order near input end to away from input end on jack shaft.

7. a kind of pure electric automobile two-shift automatic speed variator according to claim 1, it is characterized in that: the in described correlation optimized project the 15th) item also can be: described first cylindrical gear pair driving gear, first torque transmitter, second cylindrical gear pair driving gear, second torque transmitter is arranged in order near input end to away from input end on input shaft, described first cylindrical gear pair driven gear, three cylindrical gear pair driving gear, second cylindrical gear pair driven gear is arranged in order near input end to away from input end on jack shaft.

8. a kind of pure electric automobile two-shift automatic speed variator according to claim 1, it is characterized in that: the in described correlation optimized project the 15th) item also can be: described first cylindrical gear pair driving gear, first torque transmitter, second torque transmitter, second cylindrical gear pair driving gear is arranged in order near input end to away from input end on input shaft, described first cylindrical gear pair driven gear, three cylindrical gear pair driving gear, second cylindrical gear pair driven gear is arranged in order near input end to away from input end on jack shaft.