CN110549847A - Driving transmission device for automobile power system - Google Patents

Driving transmission device for automobile power system Download PDF

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Publication number
CN110549847A
CN110549847A CN201910901728.4A CN201910901728A CN110549847A CN 110549847 A CN110549847 A CN 110549847A CN 201910901728 A CN201910901728 A CN 201910901728A CN 110549847 A CN110549847 A CN 110549847A
Authority
CN
China
Prior art keywords
gear
planet
transmission device
ring
clutch
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN201910901728.4A
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Chinese (zh)
Inventor
吴燕开
Original Assignee
吴燕开
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 吴燕开 filed Critical 吴燕开
Priority to CN201910901728.4A priority Critical patent/CN110549847A/en
Publication of CN110549847A publication Critical patent/CN110549847A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K17/00Arrangement or mounting of transmissions in vehicles
    • B60K17/02Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K17/00Arrangement or mounting of transmissions in vehicles
    • B60K17/04Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/06Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
    • B60K17/08Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K17/00Arrangement or mounting of transmissions in vehicles
    • B60K17/04Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/16Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/06Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
    • B60T1/062Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels acting on transmission parts

Abstract

the invention discloses an electric drive transmission device for an automobile power system, which comprises a motor, a planetary gear mechanism, a reduction gear, a differential mechanism, a shifting element and the like. The combination of the planetary gear mechanism and the gear shifting element is adopted to realize a two-gear pure electric drive mode, a four-gear hybrid drive mode and an E-CVT drive mode. The transmission device can simultaneously give consideration to the use requirements of pure electric driving and hybrid power driving, and is suitable for a non-plug-in hybrid system and a plug-in hybrid system. The scheme is an electrically driven transmission device adopting a single motor, has the advantage of low cost, and can better meet market demands.

Description

Driving transmission device for automobile power system
Technical Field
The invention belongs to the technical field of vehicle power transmission, and particularly relates to an electric drive transmission device for an automobile power system.
Background
The motorization of the automobile power system becomes a development trend, the hybrid power system is mature in technology and is produced in large batch, and the motorization becomes an important energy-saving technical route of the traditional automobile. The typical hybrid products in the market at present are dual-motor hybrid systems of Japanese automobile companies such as Toyota and Honda. The dual-motor hybrid power system has higher cost, and a special dual-motor controller is adopted, so that the key parts have higher technical requirements, and the factors limit the route selection of domestic autonomous automobile companies to a certain extent. At present, more automobile companies in China add motors to existing gearboxes to achieve electromotion, and the motor and controller cost is superposed on the cost of the existing gearboxes, so that competitiveness is lacked. The development of a single-motor multi-gear special hybrid power system is an optional technical route, a single motor and a transmission system are integrated, the motors are not directly added on the existing gearbox, and the specialized design is favorable for simplifying the structure of the gearbox and reducing the product cost. The single-motor special hybrid system can optimize the working range of the engine in the whole vehicle speed range, reduces the oil consumption of the whole vehicle, has the cost advantage, and can well meet the use requirement of domestic autonomous vehicles.
Disclosure of Invention
The invention aims to provide a driving transmission device for an automobile power system, which is used for a non-plug-in hybrid electric system or a plug-in hybrid electric system and is a platform technical scheme.
In order to realize the purpose of the invention, the following technical scheme is provided:
The utility model provides a drive transmission for automobile power system, it includes double planetary gear mechanism, its characterized in that: the double-planet gear mechanism comprises a first planet row mechanism and a second planet row mechanism, the first planet row mechanism comprises a first sun wheel, a first planet wheel, a first inner gear ring and a first planet carrier, the second planet row mechanism comprises a second sun wheel, a second planet wheel, a second inner gear ring and a second planet carrier, the first sun wheel is meshed with the first planet wheel, the first planet wheel is meshed with the first inner gear ring at the same time, a plurality of first planet wheels are arranged on the circumference of the first planet carrier, the second sun wheel is meshed with the second planet wheel, the second planet wheel is meshed with the second inner gear ring at the same time, a plurality of second planet wheels are arranged on the circumference of the second planet carrier, the first sun wheel and the second sun wheel are connected with a motor shaft at the same time, a motor shaft is connected with a rotor of the motor EM, a stator of the motor EM is fixed on a transmission device shell, the first planet carrier is connected with the second inner gear ring, a first brake is arranged between the second inner gear ring and the transmission device shell, a second brake is arranged between the first inner gear ring and the transmission device shell, a first clutch is arranged between the transmission device input shaft and the motor shaft, a second clutch is arranged between the transmission device input shaft and the first planet carrier, the second planet carrier is connected with the power output shaft, and the power output shaft transmits power to the differential mechanism through a gear mechanism or a chain mechanism.
Further, a one-way clutch OWC with a rotation speed limiting function is arranged between the second inner gear ring and the transmission device shell, and the one-way clutch OWC only allows the second inner gear ring to rotate in the same direction as the engine.
Furthermore, the first clutch, the second clutch and the second brake are wet friction plate type mechanisms, the first brake is a wet friction plate type mechanism or a one-way clutch with controllable steering, and the one-way clutch with controllable steering can control the allowed rotation direction according to requirements.
Advantageous effects
The invention provides a driving transmission device for an automobile power system, which integrates a single motor and a multi-gear transmission mechanism to realize a pure electric mode with two gears and various hybrid power driving modes. The pure electric mode of two fender positions can satisfy the performance requirement of inserting electric hybrid to pure electric traveling, improves the work efficiency of motor simultaneously. The transmission scheme can realize a four-gear parallel mode and a power split working mode in a hybrid power mode. And the single-motor hybrid system has the advantage of low cost and can meet the use requirements of vehicles of different levels.
Drawings
FIG. 1 is a schematic diagram of a drive transmission for an automotive powertrain according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Examples
As shown in fig. 1, an electric drive transmission device for an automotive power system comprises a double-planet-row mechanism, an electric machine EM, a reduction gear, a differential, a clutch, a brake and the like, wherein the double-planet-row gear mechanism comprises two single-planet-row mechanisms, the first planet-row mechanism comprises a first sun gear 6, a first planet gear 7, a first inner gear ring 8 and a first planet carrier 9, the second planet-row mechanism comprises a second sun gear 10, a second planet gear 11, a second inner gear ring 12 and a second planet carrier 13, the first sun gear 6 is meshed with the first planet gear 7, the first planet gear 7 is simultaneously meshed with the first inner gear ring 8, a plurality of first planet gears 7 are arranged on the circumference of the first planet carrier 9, the second sun gear 10 is meshed with the second planet gear 11, the second planet gear 11 is simultaneously meshed with the second inner gear ring 12, a plurality of second planet gears 11 are arranged on the circumference of the second planet carrier 13, the first sun gear 6 and the second sun gear 10 are simultaneously connected with a motor shaft 5, the motor shaft 5 is connected with a rotor 3 of the motor EM, a stator 4 of the motor EM is fixed on a transmission device shell 0, the first planet carrier 9 is connected with the second ring gear 12, a first brake B1 is arranged between the second ring gear 12 and the transmission device shell 0, a second brake B2 is arranged between the first ring gear 8 and the transmission device shell 0, a first clutch C1 is arranged between the transmission device input shaft 1 and the motor shaft 5, a second clutch C2 is arranged between the transmission device input shaft 1 and the first planet carrier 9, and a second planet carrier 13 is connected with the power output shaft 2. A one-way clutch OWC having a rotation speed limiting function is provided between the second ring gear 12 and the transmission housing 0, and the one-way clutch OWC allows only the second ring gear 12 to rotate in the same direction as the engine. The input shaft 1 of the transmission is directly connected to a flywheel damper FW of the engine ICE.
A reduction gear 14 is arranged on the power output shaft 2 and is meshed with a reduction gear 15 on a gear coupling 18 to form a first-stage speed reduction; the small reduction gear 16 on the gear coupling 18 meshes with the differential main reduction gear 17, forming a second reduction. The power of the power output shaft 2 is transmitted to a differential 20 through two-stage reduction gears, and then the vehicle is driven through a half shaft 19.
In this scheme, the first brake B1, the second brake B2, the first clutch C1 and the second clutch C2 are wet friction plate type mechanisms commonly used in an automatic transmission AT. When the brake is closed, the rotating shaft is locked to zero rotating speed, and when the clutch is closed, the rotating shafts at two ends are connected into a shaft to realize the rotation at the same rotating speed. Various driving modes are realized by controlling different brakes and clutches, and the running condition of the whole vehicle is met. The control logic relationship between the operating modes and the shift elements that can be realized by the present embodiment is shown in table 1. To better illustrate the modes of operation, the rotational speeds and torque directions of the various components are defined as positive rotational speeds and positive torques when they are in agreement with the engine and negative rotational speeds and negative torques when they are in opposition to the engine.
TABLE 1 Power System modes
Mode of operation OWC B1 B2 C1 C2
EV-1
EV-2
HEV-1
HEV-2
HEV-3
HEV-4
E-CVT
Parking power generation
Reverse driving
Note: good component-open state (OWC showing the axis being rotatable)
● -closed state (OWC is shown as limiting shaft rotation)
When the motor is driven alone, the first clutch (C1) and the second clutch (C2) are both in an open state to disconnect the engine. The one-way clutch (OWC) limits the negative rotation speed of the second inner gear ring (12), when the first-gear pure electric vehicle (EV-1) runs in the positive direction, only the motor (EM) needs to be controlled to drive the vehicle, the one-way clutch (OWC) provides a torque fulcrum, and the advantage of strong bearing capacity of the one-way clutch (OWC) is exerted. When the speed is increased to the second-gear pure electric (EV-2) driving mode, the one-way clutch (OWC) does not limit the forward rotation of the second inner gear ring (12), and the gear-up can be completed only by controlling the second brake (B2) to be closed independently. The use of the one-way clutch (OWC) reduces the difficulty of gear shifting control and improves the gear shifting smoothness of the whole vehicle.
In the hybrid mode, the engine is connected to the planetary gear train element via two clutches to perform power input. When the hybrid drive mode (HEV-1) is driven, the first clutch (C1) is closed, the engine and the motor (EM) are coaxially driven, and the one-way clutch (OWC) serves as a torque fulcrum. On the basis, when the two-gear hybrid drive (HEV-2) is started, only the second brake (B2) needs to be closed, and the two gears are consistent with the two gears of the pure electric mode. As vehicle speed continues to increase, the second brake (B2) is opened while the first clutch (C1) and the second clutch (C2) are closed, at which time the planetary gear set is rotating as a whole, and direct drive is achieved, defined as HEV-3 mode. When the planet row mechanism integrally rotates, each planet row element does not move in a meshing way, so that the mechanical loss can be reduced, and the noise problem of the planet row mechanism is solved. When the hybrid vehicle runs at a high speed, the second clutch (C2) and the second brake (B2) are simultaneously closed, the hybrid system enters an overdrive driving mode (HEV-4), the engine can run in an economic region at a high vehicle speed and can be directly driven, and the motor (EM) performs power assistance and braking energy recovery when necessary.
The pure electric drive is preferred when the vehicle starts in the forward direction, and the parking power generation mode or the E-CVT mode can be adopted for starting when the electric quantity is insufficient. When the vehicle is parked for power generation, the first clutch (C1) is closed, and the engine directly drives the motor (EM) to generate power. And (3) independently closing the second clutch (C2) in the E-CVT mode, starting the vehicle from zero rotating speed by the second planet carrier (13), enabling the motor (EM) to be in a negative rotating speed and positive torque power generation state, enabling the engine to work at a certain rotating speed, and controlling the rotating speed of the motor to increase the rotating speed of the output shaft (2) to finish the vehicle starting.
When the vehicle is backed up, the first brake (B1) is closed to back up the vehicle at a first gear ratio, and at the moment, the one-way clutch (OWC) can not provide a torque fulcrum, so that the first brake (B1) needs to be closed when the vehicle is backed up, the first brake (B1) is only used under the working condition of backing up the vehicle, the number of friction plates of the first brake can be controlled, and the idle dragging friction loss is reduced.

Claims (3)

1. A drive transmission for an automotive power system, comprising a double planetary gear mechanism, characterized in that: the double-planet-row gear mechanism comprises a first planet-row mechanism and a second planet-row mechanism, the first planet-row mechanism comprises a first sun gear (6), a first planet gear (7), a first inner gear ring (8) and a first planet carrier (9), the second planet-row mechanism comprises a second sun gear (10), a second planet gear (11), a second inner gear ring (12) and a second planet carrier (13), the first sun gear (6) is meshed with the first planet gear (7), the first planet gear (7) is simultaneously meshed with the first inner gear ring (8), a plurality of first planet gears (7) are arranged on the circumference of the first planet carrier (9), the second sun gear (10) is meshed with the second planet gear (11), the second planet gear (11) is simultaneously meshed with the second inner gear ring (12), a plurality of second planet gears (11) are arranged on the circumference of the second planet carrier (13), the first sun gear (6) and the second sun gear (10) are simultaneously connected with a motor shaft (5), the motor shaft (5) is connected with a rotor (3) of the motor EM, a stator (4) of the motor EM is fixed on the transmission device shell (0), the first planet carrier (9) is connected with a second ring gear (12), a first brake (B1) is arranged between the second ring gear (12) and the transmission device shell (0), a second brake (B2) is arranged between the first ring gear (8) and the transmission device shell (0), a first clutch (C1) is arranged between the transmission device input shaft (1) and the motor shaft (5), a second clutch (C2) is arranged between the transmission input shaft (1) and the first planet carrier (9), the second planet carrier (13) is connected with the power output shaft (2), and the power output shaft (2) transmits power to the differential (20) through a gear mechanism or a chain mechanism.
2. A drive transmission for an automotive power system according to claim 1, characterized in that: and a one-way clutch OWC with a rotation speed limiting function is arranged between the second ring gear (12) and the transmission device shell (0), and the one-way clutch OWC only allows the second ring gear (12) to rotate in the same direction as the engine.
3. A drive transmission for an automotive power system according to claim 1, characterized in that: the first clutch (C1), the second clutch (C2) and the second brake (B2) are wet friction plate type mechanisms, the first brake (B1) is a wet friction plate type mechanism or a one-way clutch with controllable steering, and the one-way clutch with controllable steering can control the allowed rotation direction according to requirements.
CN201910901728.4A 2019-09-23 2019-09-23 Driving transmission device for automobile power system Pending CN110549847A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910901728.4A CN110549847A (en) 2019-09-23 2019-09-23 Driving transmission device for automobile power system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910901728.4A CN110549847A (en) 2019-09-23 2019-09-23 Driving transmission device for automobile power system

Publications (1)

Publication Number Publication Date
CN110549847A true CN110549847A (en) 2019-12-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910901728.4A Pending CN110549847A (en) 2019-09-23 2019-09-23 Driving transmission device for automobile power system

Country Status (1)

Country Link
CN (1) CN110549847A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111619331A (en) * 2020-05-25 2020-09-04 奇瑞汽车股份有限公司 Hybrid powertrain system and control method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111619331A (en) * 2020-05-25 2020-09-04 奇瑞汽车股份有限公司 Hybrid powertrain system and control method
CN111619331B (en) * 2020-05-25 2022-03-15 奇瑞汽车股份有限公司 Hybrid powertrain system and control method

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