WO2023206717A1 - Essieu moteur électrique de changement de vitesse à engrenages multiples et véhicule électrique - Google Patents

Essieu moteur électrique de changement de vitesse à engrenages multiples et véhicule électrique Download PDF

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Publication number
WO2023206717A1
WO2023206717A1 PCT/CN2022/097257 CN2022097257W WO2023206717A1 WO 2023206717 A1 WO2023206717 A1 WO 2023206717A1 CN 2022097257 W CN2022097257 W CN 2022097257W WO 2023206717 A1 WO2023206717 A1 WO 2023206717A1
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WO
WIPO (PCT)
Prior art keywords
gear
transmission
sliding sleeve
speed
shaft
Prior art date
Application number
PCT/CN2022/097257
Other languages
English (en)
Chinese (zh)
Inventor
李杉
邓跃跃
闫宏翔
Original Assignee
特百佳动力科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 特百佳动力科技有限公司 filed Critical 特百佳动力科技有限公司
Publication of WO2023206717A1 publication Critical patent/WO2023206717A1/fr

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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
    • 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
    • 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
    • B60K20/00—Arrangement or mounting of change-speed gearing control devices in vehicles

Definitions

  • the invention relates to the field of vehicle technology, and in particular to a multi-speed electric drive axle and an electric vehicle.
  • the multi-speed transmission system of new energy vehicles is a vehicle transmission system.
  • the transmission system is an important part of the electric drive axle.
  • the main task of the transmission system is to transfer the power from the drive motor or other equipment through meshing gear transmission.
  • Mechanisms such as gear meshing can achieve deceleration and torque increase or direct drive power output, thereby driving the movement and operation of vehicles or other transportation machinery, allowing the vehicle to obtain a certain speed, provide sufficient traction, and have high efficiency.
  • the present invention provides a multi-speed electric drive axle and an electric vehicle.
  • the transmission system has an innovative structural design layout and effectively combines the two transmission modules at the front and rear of the axle housing through a coupling gear mechanism. , which can effectively solve the problems in the background technology.
  • a multi-speed electric drive axle including a drive assembly, a power coupling gear, a first gear transmission assembly, a differential, a first half shaft and a second half shaft
  • the drive assembly is used to drive the differential.
  • the drive assembly includes a first motor and a first transmission mechanism that is transmission connected to the first motor.
  • the power coupling gear is provided on the first half shaft or the second half shaft.
  • the first transmission mechanism is drivingly connected to the first gear transmission assembly through the power coupling gear, and the first gear transmission assembly is drivingly connected to the differential.
  • the first gear transmission assembly Includes second transmission mechanism.
  • the first transmission mechanism and the second transmission mechanism each include a planetary gear mechanism or a plurality of first gear pairs.
  • the driving assembly includes a sliding sleeve shifting mechanism, the sliding sleeve of the sliding sleeve shifting mechanism is provided on the output shaft of the driving assembly, and the first transmission mechanism is a planetary gear shifting mechanism. gear mechanism;
  • the first sliding sleeve shift mechanism is drivingly connected to the planet carrier of the planetary gear mechanism;
  • the first sliding sleeve shift mechanism is drivingly connected to the central shaft of the planetary gear mechanism.
  • the first gear transmission assembly includes a first intermediate shaft and a first transmission shaft
  • the second transmission mechanism includes two first gear pairs, each of the first gear pairs The two gears are respectively provided on the first intermediate shaft and the first transmission shaft;
  • the second speed change mechanism includes a second sliding sleeve shift mechanism, the sliding sleeve of the second sliding sleeve shift mechanism is provided on the first transmission shaft, and the second sliding sleeve shift mechanism is used to communicate with both sides.
  • At least one half shaft of the differential is provided with a second gear pair, and the first intermediate shaft is drivingly connected to the differential through the second gear pair.
  • the driving assembly further includes a second intermediate shaft and a second gear provided on the second intermediate shaft, the output shaft of the driving assembly is provided with a first gear, and the The second gear meshes with the first gear and the power coupling gear respectively, the first intermediate shaft is provided with a third gear, and the first transmission shaft is provided with a fourth gear that meshes with the third gear. , the third gear is also meshed with the power coupling gear.
  • the driving assembly and the first gear transmission assembly are respectively provided on opposite sides of the power coupling gear.
  • the driving assembly includes a first motor and a second motor, the first motor is drivingly connected to the first transmission mechanism, and the second motor is connected to the output shaft of the driving assembly. Transmission connection.
  • the electric drive axle further includes a shift control unit electrically connected to the first sliding sleeve shift mechanism and the second sliding sleeve shift mechanism.
  • the shift control unit uses In the low speed mode, the sliding sleeve of the first sliding sleeve shift mechanism is controlled to be drivingly connected to the planet carrier of the planetary gear mechanism; in the high speed mode, the sliding sleeve of the first sliding sleeve shift mechanism is controlled.
  • the sleeve is transmission connected with the central shaft of the planetary gear mechanism, and the shift control unit is also used to control the sliding sleeve of the second sliding sleeve shift mechanism to be transmission connected with one of the two first gear pairs.
  • any of the above-mentioned multi-speed electric drive axles are applicable to electric vehicles.
  • the present invention provides a multi-speed variable speed electric drive axle and an electric vehicle, which have the following beneficial effects: the multi-speed variable speed electric drive axle and the electric vehicle can enable the electric vehicle to obtain optimized vehicle speed and traction force And efficiency balance, to maximize the requirements for traction, speed and efficiency in various working conditions such as light load, heavy load, flat road operation, slope operation, etc., reduce energy consumption and increase efficiency.
  • Figure 1 is a schematic diagram of the overall structure of a multi-speed variable speed electric drive axle according to the present invention
  • Figure 2 is a schematic structural diagram of the I-speed power transmission route of the multi-speed electric drive axle in the embodiment of the present invention
  • Figure 3 is a schematic structural diagram of the II gear power transmission route of the multi-speed electric drive axle in the embodiment of the present invention.
  • Figure 4 is a schematic structural diagram of the III-speed power transmission route of the multi-speed electric drive axle in the embodiment of the present invention.
  • Figure 5 is a schematic structural diagram of the IV gear power transmission route of the multi-speed electric drive axle in the embodiment of the present invention.
  • Figure 6 is a schematic structural diagram of the first sliding sleeve shifting mechanism in the multi-speed electric drive axle in the embodiment of the present invention.
  • Figure 7 is a schematic structural diagram of the second sliding sleeve shift mechanism in the multi-speed electric drive axle in the embodiment of the present invention.
  • connection should be understood in a broad sense.
  • connection or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components.
  • connection or integral connection
  • connection or integral connection
  • connection can be a mechanical connection or an electrical connection
  • it can be a direct connection or an indirect connection through an intermediate medium
  • it can be an internal connection between two components.
  • specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • a multi-speed electric drive axle includes a drive assembly 1, a power coupling gear 2, a first gear transmission assembly 3, a differential 4, a first half shaft 5 and a second half shaft 6 , the drive assembly 1 is used to drive the differential 4.
  • the drive assembly 1 includes a first motor 7 and a first transmission mechanism 8 that is transmission connected to the first motor 7.
  • the power coupling gear 2 is located on the first half shaft 5 or the second half shaft.
  • the power coupling gear 2 is provided on the second half shaft 6, the first transmission mechanism 8 is transmission connected to the first gear transmission assembly 3 through the power coupling gear 2, and the first gear transmission assembly 3 is connected to the differential
  • the first gear transmission assembly 3 includes a second transmission mechanism 9 .
  • the driving assembly 1 drives the position of the differential 4, and is equipped with a motor and a transmission mechanism inside. At least one half shaft of the differential 4 is provided with a power coupling gear 2, which is connected to the transmission assembly through the power coupling gear 2 to drive the transmission.
  • the transmission component is also equipped with a transmission mechanism.
  • the innovative structural design layout of the transmission system effectively combines the two transmission modules at the front and rear of the axle housing through a coupling gear mechanism to form a multi-speed gear transmission system to achieve a variety of power.
  • the flow transfer mode matched with the motor, is applied to the electric drive axle assembly of commercial vehicles.
  • the first transmission mechanism 8 and the second transmission mechanism 9 both include a planetary gear mechanism 10 or two first gear pairs 11.
  • the driving assembly 1 includes a sliding sleeve shift mechanism.
  • the sliding sleeve shift mechanism Sleeved on the output shaft 13 of the driving assembly, the first transmission mechanism 8 is a planetary gear mechanism 10.
  • the first sliding sleeve shift mechanism 12 and the planet carrier transmission of the planetary gear mechanism 10 connection when the electric drive axle is in the high-speed mode, the first sliding sleeve shift mechanism 12 is drivingly connected to the central shaft of the planetary gear mechanism 10 .
  • the structural design and layout of the transmission assembly, gear pair and planetary gear mechanism 10 can enlarge the speed ratio range and realize a high-speed and low-torque motor drive scheme to reduce weight and hardware costs.
  • the transmission mechanisms at both ends are distributed on the axle housing.
  • the front and rear sides of the body make the weight on both sides of the axle housing more balanced and the stress on the load-bearing body is improved.
  • the first gear transmission assembly 3 includes a first intermediate shaft 14 and a first transmission shaft 15.
  • the second transmission mechanism 9 includes two first gear pairs 11, and the two gears of each first gear pair 11 are respectively provided at On the first intermediate shaft 14 and the first transmission shaft 15, the second transmission mechanism 9 includes a second sliding sleeve shift mechanism 16.
  • the sliding sleeve of the second sliding sleeve shift mechanism 16 is provided on the first transmission shaft 15.
  • the sliding sleeve shift mechanism 16 is used for transmission connection with one of the two first gear pairs 11.
  • At least one half shaft of the differential 4 is provided with a second gear pair 17.
  • the first intermediate shaft 14 is connected to the second gear pair 17 through the second gear pair 17.
  • the differential 4 is transmission connected.
  • the drive assembly 1 also includes a second intermediate shaft 18 and a second gear 19 provided on the second intermediate shaft 18.
  • the first gear 20 is provided on the output shaft 13 of the drive assembly.
  • the second gears 19 are respectively Mesh with the first gear 20 and the power coupling gear 2.
  • the first intermediate shaft 14 is provided with a third gear 21.
  • the first transmission shaft 15 is provided with a fourth gear 22 that meshes with the third gear 21.
  • the third gear 21 is also provided with The power coupling gear 2 meshes.
  • the drive assembly 1 and the first gear transmission assembly 3 are respectively located on opposite sides of the power coupling gear 2.
  • the drive assembly 1 includes a first motor 7 and a second motor 23.
  • the first motor 7 and a first transmission mechanism 8 transmission connection, the second motor 23 is transmission connection with the drive assembly output shaft 13.
  • the electric drive axle also includes a shift control unit electrically connected to the first sliding sleeve shift mechanism 12 and the second sliding sleeve shift mechanism 16.
  • the shift control unit is used to control the first sliding sleeve shift mechanism in the low speed mode.
  • the sliding sleeve of the gear mechanism 12 is drivingly connected to the planet carrier of the planetary gear mechanism 10.
  • the sliding sleeve of the first sliding sleeve shifting mechanism 12 is drivingly connected to the central shaft of the planetary gear mechanism 10.
  • the shift control unit also uses The sliding sleeve used to control the second sliding sleeve shifting mechanism 16 is drivingly connected to one of the two first gear pairs 11 .
  • variable speed electric drive axle including any of the above items is suitable for new energy vehicles.
  • FIG. 1-7 it includes a drive assembly 1, a power coupling gear 2, a first gear transmission assembly 3, a differential 4, a first half shaft 5 and a second half shaft 6.
  • the drive assembly 1 is used to drive the differential.
  • the drive assembly 1 includes a first motor 7 and a first transmission mechanism 8 that is transmission connected to the first motor 7.
  • the power coupling gear 2 is provided on the first half shaft 5 or the second half shaft 6.
  • the power coupling gear 2 is provided on the second half shaft 6.
  • the first transmission mechanism 8 is transmission connected to the first gear transmission assembly 3 through the power coupling gear 2.
  • the first gear transmission assembly 3 is transmission connection to the differential 4.
  • the first gear The transmission assembly 3 includes a second transmission mechanism 9.
  • the first transmission mechanism 8 and the second transmission mechanism 9 each include a planetary gear mechanism 10 or a plurality of first gear pairs 11.
  • the driving assembly 1 includes a sliding sleeve shifting mechanism.
  • the sliding sleeve shifting mechanism The sliding sleeve of the mechanism is arranged on the output shaft 13 of the drive assembly.
  • the first transmission mechanism 8 is a planetary gear mechanism 10.
  • the electric drive axle also includes a shift control unit electrically connected to the sliding sleeve shift mechanism.
  • the shift control unit also uses The sliding sleeve used to control the second sliding sleeve shifting mechanism 16 is drivingly connected to one of the two first gear pairs 11 .
  • the first sliding sleeve shift mechanism 12 is drivingly connected to the planet carrier of the planetary gear mechanism 10, and the shift control unit is used to control the The sliding sleeve of the first sliding sleeve shift mechanism 12 is drivingly connected to the planet carrier of the planetary gear mechanism 10; decelerating and increasing the torque input form a low-speed gear, forming I gear and II gear.
  • the first sliding sleeve shifting mechanism 12 when the electric drive axle is in the high-speed mode, the first sliding sleeve shifting mechanism 12 is drivingly connected to the central shaft of the planetary gear mechanism 10. In the high-speed mode, the first sliding sleeve shifting mechanism is controlled. The sliding sleeve of the mechanism 12 is drivingly connected to the central shaft of the planetary gear mechanism 10 to form a high-speed gear, forming III gear and IV gear; the shifter is connected to the shift fork, and the shifter is used to drive the shift fork to move. The first sliding sleeve shifting mechanism 12 switches between different gears.
  • the 2X2 four-speed transmission system enables the electric drive axle to achieve multiple power output modes.
  • the cargo loading capacity of commercial vehicles varies widely, the transportation mileage varies, and the transportation road conditions are diverse.
  • the requirements for vehicle speed and traction are also diverse. At the same time, they also require high operating efficiency to save energy and increase efficiency.
  • the design of multi-speed electric drive axles and electric vehicles should try to meet the diverse operating conditions of commercial vehicles in terms of space layout and performance requirements. For example, large traction is required when climbing hills and sufficient traction is needed; for example, transportation time needs to be reduced.
  • the required vehicle speed can be obtained and transportation efficiency improved; at the same time, operating efficiency can be improved as much as possible under various working conditions.
  • FIG. 6 An exemplary structural diagram of a sliding sleeve shift mechanism is shown in Figure 6; the sliding sleeve shift mechanism includes a sliding sleeve 25.
  • the sliding sleeve 25 is sleeved on the gear through splines.
  • One end of the shift fork is connected to The sliding sleeve 25 is connected so that the sliding sleeve 25 slides between the engaging teeth of the output shaft 13 of the drive assembly and the engaging teeth of the planet carrier of the planetary gear mechanism 10 .
  • the outer surface of the sliding sleeve 25 is provided with external teeth, and the inner surface is provided with internal teeth; the inner surface of the planetary gear mechanism 10 is provided with internal teeth, and the outer surface of the drive assembly output shaft 13 is provided with external teeth.
  • the second sliding sleeve shift mechanism 16 includes a sliding sleeve 25, which is sleeved on the shaft through splines, so that The sliding sleeve 25 slides between the engaging teeth of the gear and the engaging teeth of the gear.
  • the outer surface of the sliding sleeve 25 is provided with external teeth, and the inner surfaces of the gear and the gear are provided with internal teeth; when the sliding sleeve 25 slides to the position where transmission is required , the external teeth of the sliding sleeve 25 can mesh with the gear or the engaging teeth of the gear for power transmission.
  • axle housing should also have the structure and interface for installing brakes, brake chambers, mounting brackets and ABS sensor components;
  • the electric drive axle In order to meet the load-bearing function, the electric drive axle needs to be connected to the vehicle frame, and the electric drive axle housing should have a vehicle suspension system installation structure and interface.
  • the three transmission modules form a power coupling and transmission power.
  • Each module can be independent of each other or highly integrated.
  • the four-speed transmission setting optimizes and satisfies the needs of electric commercial vehicles for electric drive axles in terms of speed ratio and power flow mode to the greatest extent possible, and best meets the balanced needs of commercial vehicles for traction, vehicle speed, and high operating efficiency, which is especially beneficial for long-distance driving. Tow vehicle.
  • the input power may be a permanent magnet synchronous motor or a switched reluctance motor.
  • multi-speed transmission system of the present disclosure can be applied to the electric drive axle assembly of commercial vehicles, and can also be applied to the electric drive axles of other transportation vehicles with similar functions to electric commercial vehicles.
  • the electric drive axle of the multi-speed transmission system of the present disclosure can choose to set different specific speed ratios according to different vehicles, different working conditions and loads, so as to achieve the optimal power and torque transmission of the vehicle and meet the traction requirements of the vehicle. , speed and efficiency requirements to achieve the lowest vehicle energy consumption requirements.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Arrangement Of Transmissions (AREA)

Abstract

L'invention concerne un essieu moteur électrique de système de changement de vitesse à engrenages multiples d'un véhicule à énergie nouvelle, comprenant un ensemble d'entraînement (1), un engrenage d'accouplement de puissance (2), un premier ensemble de transmission à engrenages (3), un différentiel (4), un premier demi-arbre (5) et un second demi-arbre (6). L'ensemble d'entraînement (1) sert à entraîner le différentiel (4) et comprend un premier moteur (7) et un premier mécanisme de changement de vitesse (8) en liaison de transmission avec le premier moteur (7).
PCT/CN2022/097257 2022-04-25 2022-06-07 Essieu moteur électrique de changement de vitesse à engrenages multiples et véhicule électrique WO2023206717A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210442639.X 2022-04-25
CN202210442639.XA CN114670619B (zh) 2022-04-25 2022-04-25 一种多档变速电驱桥及电动汽车

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Publication Number Publication Date
WO2023206717A1 true WO2023206717A1 (fr) 2023-11-02

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PCT/CN2022/097257 WO2023206717A1 (fr) 2022-04-25 2022-06-07 Essieu moteur électrique de changement de vitesse à engrenages multiples et véhicule électrique

Country Status (2)

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CN (1) CN114670619B (fr)
WO (1) WO2023206717A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108016277A (zh) * 2016-10-31 2018-05-11 比亚迪股份有限公司 动力传动系统以及具有其的车辆
CN114030348A (zh) * 2021-10-31 2022-02-11 如果科技有限公司 电驱动桥
CN114030346A (zh) * 2021-10-31 2022-02-11 如果科技有限公司 电桥驱动系统
CN216231648U (zh) * 2021-11-18 2022-04-08 特百佳动力科技有限公司 一种集成式电驱桥系统
CN114619874A (zh) * 2022-04-14 2022-06-14 特百佳动力科技有限公司 一种电驱桥和电动汽车

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Publication number Priority date Publication date Assignee Title
CN103448528B (zh) * 2013-08-09 2017-02-01 浙江吉利汽车研究院有限公司 混合动力耦合装置
CN107323255A (zh) * 2016-04-28 2017-11-07 舍弗勒技术股份两合公司 变速驱动桥及其双速驱动模块
CN208359899U (zh) * 2018-06-21 2019-01-11 安徽维德电源有限公司 一种电动工业车辆驱动系统
CN210390640U (zh) * 2019-07-26 2020-04-24 比亚迪股份有限公司 驱动桥和具有其的车辆
DE102020114063A1 (de) * 2020-05-26 2021-12-02 Man Truck & Bus Se Achsgetriebe für eine elektrisch angetriebene Achse eines Kraftfahrzeugs
CN113978225A (zh) * 2021-11-18 2022-01-28 特百佳动力科技有限公司 一种分布式电驱桥系统及车辆

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108016277A (zh) * 2016-10-31 2018-05-11 比亚迪股份有限公司 动力传动系统以及具有其的车辆
CN114030348A (zh) * 2021-10-31 2022-02-11 如果科技有限公司 电驱动桥
CN114030346A (zh) * 2021-10-31 2022-02-11 如果科技有限公司 电桥驱动系统
CN216231648U (zh) * 2021-11-18 2022-04-08 特百佳动力科技有限公司 一种集成式电驱桥系统
CN114619874A (zh) * 2022-04-14 2022-06-14 特百佳动力科技有限公司 一种电驱桥和电动汽车

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Publication number Publication date
CN114670619A (zh) 2022-06-28
CN114670619B (zh) 2022-11-22

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