WO2022141237A1 - Dispositif de protection de couple destiné à être utilisé dans une transmission de puissance hybride et transmission - Google Patents

Dispositif de protection de couple destiné à être utilisé dans une transmission de puissance hybride et transmission Download PDF

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Publication number
WO2022141237A1
WO2022141237A1 PCT/CN2020/141561 CN2020141561W WO2022141237A1 WO 2022141237 A1 WO2022141237 A1 WO 2022141237A1 CN 2020141561 W CN2020141561 W CN 2020141561W WO 2022141237 A1 WO2022141237 A1 WO 2022141237A1
Authority
WO
WIPO (PCT)
Prior art keywords
torque
input shaft
friction plate
transmission input
protection device
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.)
Ceased
Application number
PCT/CN2020/141561
Other languages
English (en)
Chinese (zh)
Inventor
石海鹏
王瑞平
钱宗行
宋伟
谭艳军
林霄喆
安聪慧
肖逸阁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yiwu Geely Automatic Transmission Co Ltd
Zhejiang Geely Holding Group Co Ltd
Ningbo Geely Royal Engine Components Co Ltd
Zhejiang Geely Power Train Co Ltd
Original Assignee
Yiwu Geely Automatic Transmission Co Ltd
Zhejiang Geely Holding Group Co Ltd
Ningbo Geely Royal Engine Components Co Ltd
Zhejiang Geely Power Train Co Ltd
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 Yiwu Geely Automatic Transmission Co Ltd, Zhejiang Geely Holding Group Co Ltd, Ningbo Geely Royal Engine Components Co Ltd, Zhejiang Geely Power Train Co Ltd filed Critical Yiwu Geely Automatic Transmission Co Ltd
Priority to PCT/CN2020/141561 priority Critical patent/WO2022141237A1/fr
Priority to CN202080105952.3A priority patent/CN116472414A/zh
Publication of WO2022141237A1 publication Critical patent/WO2022141237A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/22—Friction clutches with axially-movable clutching members
    • F16D13/38—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs
    • F16D13/52—Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member

Definitions

  • the invention relates to the field of vehicle parts, in particular to a torque protection device and a gearbox used in a hybrid gearbox.
  • the hybrid gearbox pointed out in this paper requires the engine to drive directly.
  • the direct drive of the engine can improve fuel efficiency and avoid the conversion of fuel into electrical energy and then into kinetic energy. loss.
  • Most of the hybrid gearboxes on the market do not use torque protection devices.
  • One of them is that the hybrid gearbox does not have an engine direct drive mode, and the other is that a conventional wet clutch is used to connect the engine input, and a clutch is commonly used
  • the engine is incorporated into the drive system, so that the engine is directly driven when the vehicle is running at high speed, so as to improve the fuel economy of the vehicle.
  • the complex structure of conventional wet clutches and the need for a complete hydraulic control system and high-pressure oil pump system the cost of design and development, components and software control has increased.
  • the present invention provides a torque protection device for the interior of a hybrid transmission that does not require a high-cost clutch device equipped with a complete hydraulic system and can protect the torque of the shifting structure.
  • a torque protection device used in a hybrid transmission which is characterized in that it includes: a transmission input shaft, a motor support, a friction plate group, a diaphragm spring and a fixed part; one end of the transmission input shaft is used to receive engine transmission The other end of the transmission input shaft is used to transmit torque to one end of the friction plate group; the motor bracket is used to transmit torque to the other end of the friction plate group; the diaphragm spring is arranged at the between the friction plate group and the fixing piece; one end of the fixing piece is fixed on the motor bracket, and the other end of the fixing piece presses the diaphragm spring; When the fluctuation range of the torque transmitted by the motor bracket to the friction plate group exceeds a preset torque fluctuation range, the friction plate group generates internal friction and heat under the pressure of the diaphragm spring to release the conversion energy.
  • the transmission input shaft, the friction plate set and the The motor bracket is rigidly connected.
  • the motor bracket is provided with a first end surface; the axial position of the transmission input shaft passes through the first end surface of the motor bracket and the transmission input shaft The axial fixing structure is fixed.
  • the axial fixing structure of the transmission input shaft includes a pressure plate and a pressure plate snap ring; one side of the pressure plate is used to define the axial position of the transmission input shaft, and the other side of the pressure plate is connected by a spline connected with the motor bracket in a way; the pressing plate snap ring is used to define the axial position of the pressing plate.
  • the friction plate group includes at least one friction plate and a pair of steel plates matched with the friction plates; the friction plates and the pair of steel plates are alternately arranged; the friction plates are used to receive the transmission of the transmission input shaft. Torque; the dual steel sheet is used to transmit torque to the motor bracket.
  • the transmission input shaft includes a fixedly connected inner shaft structure and an outer hub structure; the inner shaft structure and the outer hub structure are connected by welding or riveting; the inner shaft structure is used to receive the engine The transmitted torque; the outer hub structure is used to output torque to the friction plate set.
  • the transmission input shaft is respectively connected with the engine and the friction plate group by means of spline connection to form torque transmission.
  • an oil hole for discharging oil is provided on the motor support at a position opposite to the diaphragm spring.
  • an overheat protection device is also included, and the overheat protection device is configured to issue a warning signal when the temperature of the torque protection device is higher than a preset temperature.
  • the invention also discloses a gearbox, which includes the torque protection device used in the hybrid gearbox according to any of the above solutions.
  • the torque protection device and the gearbox for use in the hybrid gearbox provided by the present invention have the following beneficial effects: only by increasing the diaphragm spring and the friction plate group, and thus changing the structure of the motor bracket and the transmission input shaft , so that the torque protection device used in the hybrid gearbox of the present invention can maintain a stable torque protection state when the torque fluctuation at the engine end or the output end of the transmission exceeds the torque protection range;
  • the torque protection device inside the gearbox has a simple structure, lower cost, and stable torque state protection.
  • FIG. 1 is a schematic structural diagram of a torque protection device used in a hybrid transmission according to an embodiment of the present invention.
  • 1-transmission input shaft 11-inner shaft structure, 12-outer hub structure, 2-motor bracket, 21-first end face, 22-oil hole, 3-friction plate group, 31-friction plate, 32- Dual steel sheet, 4-diaphragm spring, 5-fixed piece, 6-axial fixing structure of transmission input shaft, 61-pressing plate, 62-pressing plate snap ring.
  • references herein to "one embodiment” or “an embodiment” refers to a particular feature, structure, or characteristic that may be included in at least one implementation of the present invention.
  • the orientations or positional relationships indicated by the terms “upper”, “lower”, “top”, “bottom”, etc. are based on the orientations or positional relationships shown in the accompanying drawings, only for the purpose of It is convenient to describe the present invention and to simplify the description, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.
  • the torque protection device used in the hybrid transmission includes: a transmission input shaft 1 , a motor bracket 2 , a friction plate group 3 , a diaphragm spring 4 and a fixing member 5 ;
  • One end of the transmission input shaft 1 is used to receive the torque transmitted by the engine; the other end of the transmission input shaft 1 is used to transmit torque to one end of the friction plate set 3; the motor bracket 2 is used to transmit torque to the The other end of the friction plate group 3; the diaphragm spring 4 is arranged between the friction plate group 4 and the fixing member 5.
  • the diaphragm spring 4 can pass the return spring group, and more One end of the fixing member 5 is fixed on the motor bracket 2, and the other end of the fixing member 5 presses the diaphragm spring 4; when the transmission input shaft is driven by the transmission input shaft 1 or when the fluctuation range of the torque transmitted from the motor bracket 2 to the friction plate group 3 exceeds the preset torque fluctuation range, the friction plate group 3 generates internal friction under the pressure of the diaphragm spring 4 to generate heat. The conversion energy is released to form torque protection for the transmission components inside the hybrid transmission. .
  • the torque protection device used in the hybrid gearbox only increases the diaphragm spring 4 and the friction plate group 3, and thus changes the structure of the motor bracket 2 and the transmission input shaft 1, so that the The torque protection device used in the hybrid gearbox can maintain a stable torque protection state when the torque fluctuation at the engine end or the output end of the transmission exceeds the torque protection range; the invention relates to the torque protection used in the hybrid gearbox. Simple device structure, lower cost, stable torque state protection
  • the transmission input shaft 1 or the motor bracket 2 to the friction plate set 3 when the fluctuation range of the torque transmitted by the transmission input shaft 1 or the motor bracket 2 to the friction plate set 3 does not exceed a preset torque fluctuation range, the transmission input The shaft 1 , the friction plate group 3 and the motor bracket 2 are rigidly connected.
  • the torque protection device for the interior of the hybrid gearbox further includes a transmission input shaft axial fixing structure 6; the The motor bracket 2 is provided with a first end surface 21 ; the axial position of the transmission input shaft 1 is fixed by the first end surface 21 of the motor bracket 2 and the transmission input shaft axial fixing structure 6 .
  • the axial fixing structure 6 of the transmission input shaft includes a pressure plate 61 and a pressure plate snap ring 62; one side of the pressure plate 61 is used to define the The axial position of the transmission input shaft 1, the other side of the pressure plate 61 is connected to the motor bracket 2 by spline connection; the pressure plate snap ring 62 is used to limit the axial position of the pressure plate 61 , it is worth noting that the pressure plate snap ring 62 can be realized by bolt connection or other equivalent connection form.
  • the diaphragm spring 4 defines the axial position of the transmission input shaft 1 and eliminates said pressure plate snap ring 62 .
  • the friction plate group 3 includes at least one friction plate 31 and a pair of steel plates 32 matched with the friction plate 31; the friction plate 31 and the pair of steel plates 32 are alternately arranged; the friction plate 31 is used to receive the torque transmitted by the transmission input shaft 4 ; the dual steel plate 32 is used to transmit the torque to the motor bracket 2 .
  • the torque protection device can be adapted to different preset torque protection ranges by adjusting the thickness of at least one pair of steel sheets 32 . It is worth noting that the torque fluctuation may be generated by the side of the pair of steel sheets 32, and the torque direction at this time is opposite to the direction described above.
  • the transmission input shaft 1 includes an inner shaft structure 11 and an outer hub structure 12 that are fixedly connected; the inner shaft structure 11 and the outer hub structure 12 are connected by welding or riveting; The inner shaft structure 11 is used for receiving the torque transmitted by the engine; the outer hub structure 12 is used for outputting the torque to the friction plate set 3 .
  • the transmission input shaft 1 is respectively connected with the engine and the friction plate set 3 by means of spline connection to form torque transmission.
  • an oil hole 22 for discharging oil is provided on the motor bracket 2 at a position opposite to the diaphragm spring 4 .
  • an overheating protection device is further included, and the overheating protection device is configured to issue a warning signal when the temperature of the torque protection device is higher than a preset temperature; specifically, Overheating protection can be programmed through the transmission program for the risk that the engine will not be able to drive directly if the torque protection device fails.
  • the torque protection device can also determine whether the actual torque protection value is consistent with the designed torque protection range through offline detection.
  • the torque protection device used in the hybrid transmission includes: a transmission input shaft 1 , a motor bracket 2 , a friction plate group 3 , a diaphragm spring 4 and a fixing member 5 ;
  • One end of the transmission input shaft 1 is used to receive the torque transmitted by the engine; the other end of the transmission input shaft 1 is used to transmit torque to one end of the friction plate set 3; the motor bracket 2 is used to transmit torque to the The other end of the friction plate group 3; the diaphragm spring 4 is arranged between the friction plate group 4 and the fixing member 5.
  • the diaphragm spring 4 can pass the return spring group, and more One end of the fixing member 5 is fixed on the motor bracket 2, and the other end of the fixing member 5 presses the diaphragm spring 4; when the transmission input shaft is driven by the transmission input shaft 1 or when the fluctuation range of the torque transmitted from the motor bracket 2 to the friction plate group 3 exceeds the preset torque fluctuation range, the friction plate group 3 generates internal friction under the pressure of the diaphragm spring 4 to generate heat.
  • the torque protection device used inside the hybrid gearbox further includes a transmission input shaft axial fixing structure 6; the motor bracket 2 is provided with a first end face 21; the axial position of the transmission input shaft 1 passes through The first end surface 21 of the motor bracket 2 and the transmission input shaft are fixed to the axial fixing structure 6 .
  • the axial fixing structure 6 of the transmission input shaft includes a pressure plate 61 and a pressure plate snap ring 62; one side of the pressure plate 61 is used to define the axial position of the transmission input shaft 1, so The other side of the pressure plate 61 is connected to the motor bracket 2 by spline connection; the pressure plate snap ring 62 is used to limit the axial position of the pressure plate 61.
  • the pressure plate snap The ring 62 can be realized by bolt connection or other equivalent connection form, in addition, regardless of the assembly sequence, the pressure plate 61 can define the shaft of the transmission input shaft 1 through the fixing member 5 or the diaphragm spring 4 position and remove the platen snap ring 62.
  • the friction plate group 3 includes at least one friction plate 31 and a pair of steel plates 32 matched with the friction plate 31; the friction plates 31 and the pair of steel plates 32 are alternately arranged; The torque transmitted by the transmission input shaft 4 ; the dual steel sheet 32 is used to transmit the torque to the motor bracket 2 .
  • the torque protection device can be adapted to different preset torque protection ranges by adjusting the thickness of at least one pair of steel sheets 32 .
  • the transmission input shaft 1 includes a fixedly connected inner shaft structure 11 and an outer hub structure 12; the inner shaft structure 11 and the outer hub structure 12 are connected by welding or riveting; the inner shaft structure 11 is used for receiving The torque transmitted by the engine; the outer hub structure 12 is used to output torque to the friction plate set 3 .
  • the transmission input shaft 1 is respectively connected with the engine and the friction plate set 3 by means of spline connection to form torque transmission.
  • an oil hole 22 for draining oil is provided on the motor bracket 2 at a position opposite to the diaphragm spring 4 .
  • the torque protection device further includes an overheat protection device, and the overheat protection device is used to issue a warning signal when the temperature of the torque protection device is higher than a preset temperature; specifically, the overheating can be set through a transmission program It is used for the risk that the engine cannot be directly driven due to the failure of the torque protection device.
  • the torque protection device can also determine whether the actual torque protection value is consistent with the designed torque protection range through offline detection.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Operated Clutches (AREA)
  • General Details Of Gearings (AREA)

Abstract

La présente invention concerne un dispositif de protection de couple destiné à être utilisé dans une transmission de puissance hybride, comprenant : un arbre d'entrée de transmission (1), un support de moteur (2), un ensemble de plaques de friction (3), un ressort diaphragme (4) et un élément de fixation (5). Une extrémité de l'arbre d'entrée de transmission (1) est utilisée pour recevoir un couple transmis par un moteur et l'autre extrémité de l'arbre d'entrée de transmission (1) est utilisée pour transmettre un couple à une extrémité de l'ensemble de plaques de friction (3). Le support de moteur (2) est utilisé pour transmettre un couple à l'autre extrémité de l'ensemble de plaques de friction (3). Le ressort diaphragme (4) est disposé entre l'ensemble de plaques de friction (3) et l'élément de fixation (5). Une extrémité de l'élément de fixation (5) est fixée sur le support de moteur (2) et l'autre extrémité de l'élément de fixation (5) est appuyée sur le ressort diaphragme (4). Lorsque la plage de fluctuation de couple transmis par l'arbre d'entrée de transmission (1) ou le support de moteur (2) à l'ensemble de plaques de friction (3) dépasse une plage de fluctuation de couple prédéfinie, l'ensemble de plaques de friction (3), sous la pression du ressort diaphragme (4), génère de la chaleur au moyen d'un frottement interne pour libérer l'énergie convertie.
PCT/CN2020/141561 2020-12-30 2020-12-30 Dispositif de protection de couple destiné à être utilisé dans une transmission de puissance hybride et transmission Ceased WO2022141237A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2020/141561 WO2022141237A1 (fr) 2020-12-30 2020-12-30 Dispositif de protection de couple destiné à être utilisé dans une transmission de puissance hybride et transmission
CN202080105952.3A CN116472414A (zh) 2020-12-30 2020-12-30 一种用于混合动力变速箱内部的扭矩保护装置及变速箱

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/141561 WO2022141237A1 (fr) 2020-12-30 2020-12-30 Dispositif de protection de couple destiné à être utilisé dans une transmission de puissance hybride et transmission

Publications (1)

Publication Number Publication Date
WO2022141237A1 true WO2022141237A1 (fr) 2022-07-07

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Application Number Title Priority Date Filing Date
PCT/CN2020/141561 Ceased WO2022141237A1 (fr) 2020-12-30 2020-12-30 Dispositif de protection de couple destiné à être utilisé dans une transmission de puissance hybride et transmission

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CN (1) CN116472414A (fr)
WO (1) WO2022141237A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59151624A (ja) * 1983-02-19 1984-08-30 Honda Motor Co Ltd 車両の動力伝達系における捩り振動吸収装置
US20120083386A1 (en) * 2010-09-30 2012-04-05 Volkswagen Aktiengesellschaft Drive arrangement for a hybrid vehicle and method for operating an electric engine in a hybrid vehicle
CN106415056A (zh) * 2014-05-16 2017-02-15 舍弗勒技术股份两合公司 用于混合动力车辆的转矩传递设备
CN107054047A (zh) * 2017-05-12 2017-08-18 上海萨克斯动力总成部件系统有限公司 混合动力系统
DE102018131309A1 (de) * 2018-12-07 2020-06-10 Schaeffler Technologies AG & Co. KG Vorspannfederkraftreduzierender Drehmomentbegrenzer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130065419A (ko) * 2011-12-09 2013-06-19 현대자동차주식회사 하이브리드 차량의 토크 리미터
DE102014221196A1 (de) * 2013-11-13 2015-05-13 Schaeffler Technologies AG & Co. KG E-Clutch mit Modulationsfeder
DE102016217220A1 (de) * 2016-09-09 2018-03-15 Schaeffler Technologies AG & Co. KG Hybridmodul
DE102019102108A1 (de) * 2019-01-29 2020-07-30 Schaeffler Technologies AG & Co. KG Hybridmodul mit einem Abtriebsbauteil

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59151624A (ja) * 1983-02-19 1984-08-30 Honda Motor Co Ltd 車両の動力伝達系における捩り振動吸収装置
US20120083386A1 (en) * 2010-09-30 2012-04-05 Volkswagen Aktiengesellschaft Drive arrangement for a hybrid vehicle and method for operating an electric engine in a hybrid vehicle
CN106415056A (zh) * 2014-05-16 2017-02-15 舍弗勒技术股份两合公司 用于混合动力车辆的转矩传递设备
CN107054047A (zh) * 2017-05-12 2017-08-18 上海萨克斯动力总成部件系统有限公司 混合动力系统
DE102018131309A1 (de) * 2018-12-07 2020-06-10 Schaeffler Technologies AG & Co. KG Vorspannfederkraftreduzierender Drehmomentbegrenzer

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