CN113669435B - Lubricating and cooling system of hybrid power type driving system and vehicle - Google Patents

Lubricating and cooling system of hybrid power type driving system and vehicle Download PDF

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Publication number
CN113669435B
CN113669435B CN202110801056.7A CN202110801056A CN113669435B CN 113669435 B CN113669435 B CN 113669435B CN 202110801056 A CN202110801056 A CN 202110801056A CN 113669435 B CN113669435 B CN 113669435B
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CN
China
Prior art keywords
oil
shaft
cooling
communicated
gear
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Active
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CN202110801056.7A
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Chinese (zh)
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CN113669435A (en
Inventor
柯孟龙
余家佳
唐琛
刘浩凌
雷君
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Dongfeng Motor Corp
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Dongfeng Motor Corp
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Classifications

    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/045—Lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting lubricant in the upper part of a gear case
    • F16H57/0452—Oil pans
    • 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/40—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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 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 assembly or relative disposition of components
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0402—Cleaning of lubricants, e.g. filters or magnets
    • F16H57/0404—Lubricant filters
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0469—Bearings or seals
    • F16H57/0471—Bearing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H02K7/1846—Rotary generators structurally associated with wheels or associated parts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Abstract

The invention discloses a lubrication cooling system of a hybrid power type driving system, relates to the technical field of hybrid power lubrication cooling, and solves the technical problem of complex lubrication cooling of a hybrid power electric driving system in the related art. A gear cavity is formed between the right shell and the left shell, a motor cavity is formed between the rear end cover and the left shell, the left shell is arranged between the right shell and the rear end cover, a cooling oil duct is formed in the rear end cover, a cooling pump is connected between the gear cavity and a cooling module, an oil splashing guide groove is formed in the cooling pump, one end of the cooling oil duct is communicated with the cooling module, the other end of the cooling oil duct is communicated with an oil spraying pipe in the motor cavity, a shaft core hole of a driving motor and a shaft core hole of a generator, and a cooling oil guiding groove of the gear cavity, so that a stator of the driving motor and the generator are sprayed and cooled respectively, and a rotor of the driving motor and the generator is cooled and lubricated with a motor shaft bearing and a right bearing of a gear shaft system. Not only meets the cooling or lubricating requirements of all parts, but also effectively improves the utilization rate of lubricating oil, and has compact overall structure.

Description

Lubricating and cooling system of hybrid power type driving system and vehicle
Technical Field
The invention relates to the technical field of hybrid power lubrication and cooling, in particular to a lubrication and cooling system of a hybrid power type driving system and a vehicle.
Background
For a hybrid power type electric drive system with a drive motor, a generator and a gear box, multiple parts such as a motor stator, a motor rotor, a bearing, an oil seal, a gear and the like are required to be lubricated and cooled, and compared with a traditional gearbox, the difficulty of a lubrication and cooling mode which can meet requirements only by splash lubrication is higher. In particular, the shaft systems are arranged side by side rather than in a planetary arrangement, and it is difficult to direct oil to the high gear shaft system simply by gear agitation splash.
The cooling of the motor and the lubrication of the gear in the gearbox are performed separately in the related art, which increases the complexity of the system.
Disclosure of Invention
The application provides a lubrication cooling system of a hybrid power type driving system and a vehicle, which solve the technical problem of complex lubrication cooling of the hybrid power type electric driving system in the related technology.
The application provides a hybrid drive system's lubrication and cooling system, including left side shell, right side shell, the rear end cap, cooling module and cooling pump, form the gear chamber of holding gear shafting between right side shell and the left side shell, form the motor chamber of holding driving motor and generator between rear end cap and the left side shell, the left side shell sets up between right side shell and rear end cap, the cooling oil duct has been seted up on the rear end cap, the cooling pump is connected between gear chamber and cooling module, wherein, be provided with the oil groove that splashes on the inner face table of at least one of them of left side shell and right side shell, cooling oil duct one end and cooling module intercommunication, the other end and the oil pipe in the motor chamber, the axial core hole of driving motor and generator, the cooling oil groove intercommunication in gear chamber, with the stator of spray cooling driving motor and generator respectively, the rotor and motor shaft bearing of cooling lubrication driving motor and generator, lubrication gear shafting's right bearing.
Optionally, the motor shaft bearing comprises a motor shaft left bearing and a motor shaft right bearing, one end of the cooling oil duct is communicated to the motor shaft left bearing, and the cooling oil duct is communicated with shaft core holes of shaft cores of the driving motor and the generator;
the shaft core is provided with a first oil hole and a second oil hole which are distributed radially, one end of the first oil hole is communicated with the shaft core hole, the other end of the first oil hole is communicated with the motor rotor, one end of the second oil hole is communicated with the shaft core hole, and the other end of the second oil hole is communicated with the right bearing of the motor shaft;
the motor shaft left bearing comprises a left bearing of a driving motor shaft and a left bearing of a generator shaft, the motor rotor comprises a motor rotor of the driving motor and a motor rotor of the generator, and the motor shaft right bearing comprises a right bearing of the driving motor shaft and a right bearing of the generator shaft.
Optionally, the rear end cover is further provided with an oil guiding ring, the oil guiding ring comprising:
the annular wall penetrates through the shaft core hole and forms an oil passing gap with the wall of the shaft core hole of the shaft core, one end of the oil passing gap is communicated with the shaft core hole, and the other end of the oil passing gap is communicated to the left bearing of the motor shaft; and
and the oil guide cavity is formed by encircling the annular wall, one end of the oil guide cavity is communicated with the cooling oil duct, and the other end of the oil guide cavity is communicated with the shaft core hole.
Optionally, the lubrication cooling system is provided with an oil collecting box, the oil collecting box is arranged in the gear cavity, and the cooling oil duct, the oil collecting box and the cooling oil guide groove are sequentially connected to lubricate the right bearing of the gear shaft system.
Optionally, the driving system comprises a driving motor, a differential, a clutch and a generator, the gear shaft system comprises a driving motor shaft, an intermediate shaft, a differential shaft, a clutch shaft, an engine shaft and a generator shaft, which are sequentially connected in a meshed transmission way, the intermediate shaft, the differential shaft, the clutch shaft and the engine shaft are respectively arranged on the left shell through left bearings, the right shell through right bearings, the driving motor shaft and the generator shaft are respectively arranged on the rear end cover through left bearings, and the driving motor shaft and the generator shaft are respectively arranged on the left shell through right bearings;
the cooling oil guide groove is configured to guide oil to the right bearings of the intermediate shaft, the differential shaft, the clutch shaft, and the engine shaft for lubrication;
the left shell is provided with a clutch pump, an output oil duct from the clutch pump to the clutch and an oil suction oil duct of the clutch pump, and the oil suction oil duct of the clutch pump is communicated with the gear cavity so as to control the locking and the disconnection of the clutch.
Optionally, the cooling oil guide groove includes:
the middle shaft is cooled and guided to the oil groove, the top end is communicated with the oil collecting box through a long nozzle, and the bottom end is communicated to the right bearing of the middle shaft;
the differential shaft is cooled and guided to the oil groove, the top end is communicated with the oil collecting box through a long nozzle, and the bottom end is communicated to the right bearing of the differential shaft;
the clutch shaft is cooled to lead the oil groove, the top end is communicated with the oil collecting box through a long nozzle, and the bottom end is communicated to the right bearing of the clutch shaft; and
the top end of the engine shaft cooling oil guide groove is communicated with the oil collecting box through a long nozzle, and the bottom end of the engine shaft cooling oil guide groove is communicated to a right bearing of the engine shaft;
wherein, the long mouth is along vertical arrangement, and the long mouth is equipped with V-arrangement and leads the oil groove, and V-arrangement leads the oil groove and is configured to reduce along the lateral dimension of decurrent direction gradually.
Optionally, the splash oil guiding groove includes a first splash oil guiding groove located on the right shell for forward gear, one end guides the oil flow stirred up by the differential, the other end guides to the right bearing of the differential shaft and the right bearing of the intermediate shaft respectively, and located on the left shell:
the second splash oil guide groove is used for guiding oil flow stirred by the differential mechanism into the forward gear at one end and guiding the oil flow to the left bearing of the differential shaft at the other end;
the third splash oil guide groove is used for forward gear and reverse gear, one end of the third splash oil guide groove is used for guiding oil flow stirred by the differential mechanism, and the other end of the third splash oil guide groove is used for guiding the left bearing of the intermediate shaft;
the fourth splash oil guide groove is used for guiding the oil flow stirred by the differential mechanism into the forward gear at one end, and the oil flow is guided to the oil collecting box through the first oil baffle rib at the high position of the intermediate shaft;
a fifth splash oil guide groove, which is used for reversing gear, one end of which is used for guiding oil flow stirred by the differential mechanism, and the other end of which is used for guiding the oil flow to the gear part of the intermediate shaft;
a sixth splash oil guide groove, which is used for forward gear and reverse gear, one end of which is used for guiding oil flow stirred up by the clutch, and the other end of which is used for guiding the oil flow to the left bearing of the clutch;
a seventh splash oil guide groove for guiding the oil flow stirred up by the engine shaft gear to one end of the forward gear and guiding the oil flow to the left bearing of the engine shaft to the other end of the splash oil guide groove; and
an eighth splash oil guide groove, which is used for the forward gear, one end of the eighth splash oil guide groove is used for guiding the oil flow stirred up by the engine shaft gear, and the oil flow is guided to the oil collecting box through a second oil baffle rib at the high part of the engine shaft;
the left shell is also provided with an oil return channel which is communicated with the gear cavity and the motor cavity, so that oil flow in the motor cavity flows back into the gear cavity.
Optionally, the oil return passage includes:
the first oil return groove is arranged close to the cooling pump;
the second oil return groove is arranged towards the left bearing of the differential shaft;
the third oil return hole is arranged towards the left bearing of the intermediate shaft; and
and the fourth oil return groove is arranged towards the left bearing of the clutch shaft.
Optionally, the lubrication cooling system is further provided with a filter in the gear cavity, the filter is fixed on the left shell, and the filter is connected with the cooling pump.
A vehicle comprises the lubricating and cooling system.
The beneficial effects of the application are as follows: the utility model provides a hybrid drive system's lubrication and cooling system, including the left side shell, the rear end cap, cooling module, the cooling pump, the cooling oil duct and splash oil guide groove, splash oil guide groove locates the gear chamber, with splash lubrication gear shaft system's bearing, wherein, the cooling oil duct is connected with the oil spray pipe and is in order to spray cooling driving motor and generator's stator, be connected with the axle core of driving motor and generator and cool off lubrication driving motor and generator's rotor and motor shaft bearing, be connected with gear chamber's cooling oil guide groove and be in order to lubricate gear shaft system's right side bearing, through single cooling pump and single cooling module, combine oil spray pipe and axle core relevant pipeline, can realize the lubrication to driving motor and generator's stator, rotor and motor shaft bearing, through splash oil guide groove, the cooling oil guide groove cooperation cooling oil duct, adopt splash lubrication and initiative lubrication combined mode, the forced lubrication to gear shaft system's bearing frame and oil blanket, not only satisfy the cooling or the lubrication demand of each spare part, the utilization ratio of lubricating oil has effectively been improved, and the overall structure is compact.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention.
FIG. 1-1 is a first overall schematic of a lubrication and cooling system provided herein;
FIGS. 1-2 are second general structural schematic illustrations of a lubrication and cooling system provided herein;
FIG. 2 is an oil flow diagram of the lubrication cooling system provided herein;
FIG. 3 is a schematic view of a portion of the active lubrication of FIG. 2;
FIG. 4-1 is a first schematic structural view of a housing in the lubrication and cooling system provided herein;
FIG. 4-2 is a second schematic view of the housing of the lubrication and cooling system provided herein;
FIGS. 4-3 are schematic views of a third configuration of a housing in the lubrication and cooling system provided herein;
FIGS. 4-4 are fourth schematic illustrations of a housing in the lubrication and cooling system provided herein;
FIGS. 4-5 are schematic views of a fifth configuration of a housing in the lubrication and cooling system provided herein;
FIG. 5 is a schematic diagram of a specific structure of the spray cooling stator of the spray pipe of FIG. 2;
FIG. 6 is a schematic diagram showing a specific structure of lubrication of the rotor shaft core of the motor in FIG. 2
FIG. 7 is a schematic illustration of the specific configuration of active lubrication and splash lubrication of the right shell of FIG. 2;
fig. 8 is a schematic diagram showing a specific structure of splash lubrication of the left shell in fig. 2.
The drawings are marked: 1-left housing, 2-right housing, 3-rear end cap, 5-gearbox oil, 6-gear cavity, 7-oil pump cavity, 8-motor cavity, 101-drive motor shaft, 102-intermediate shaft, 103-differential shaft, 104-clutch shaft, 105-engine shaft, 106-generator shaft, 108-drive motor, 109-generator, 110-cooling pump, 111-clutch pump, 112-oil injection pipe, 113-shaft core, 113-1-first oil hole, 113-2-second oil hole, 114-oil collection box, 115-cooling module, 117-rotor, 118-stator, 120-filter, 133-left housing internal cooling pump oil channel, 140-left housing internal oil collection box oil channel, 201-intermediate shaft right bearing, 202-differential shaft right bearing, 203-clutch shaft right bearing, 205-engine shaft right bearing, 207-drive motor shaft right bearing, 208-intermediate shaft left bearing, 209-differential shaft left bearing, 210-clutch shaft left bearing, 211-engine shaft left bearing, 212-engine shaft left bearing 217-generator shaft right bearing, 212-engine shaft left bearing 217-differential shaft, left bearing 218-differential shaft left oil guide groove, 222-third oil guide groove, 231-fourth oil guide groove, and fourth oil guide groove.
Detailed Description
The embodiment of the application solves the technical problem of complex lubrication and cooling of the hybrid electric drive system in the related art by providing the lubrication and cooling system of the hybrid electric drive system and the vehicle.
The technical scheme in the embodiment of the application aims to solve the technical problems, and the overall thought is as follows:
the utility model provides a hybrid drive system's lubrication and cooling system, including left side shell, right side shell, the rear end cap, cooling module and cooling pump, form the gear chamber of holding gear shafting between right side shell and the left side shell, form the motor chamber of holding driving motor and generator between rear end cap and the left side shell, the left side shell sets up between right side shell and rear end cap, the cooling oil duct has been seted up on the rear end cap, the cooling pump is connected between gear chamber and cooling module, wherein, be provided with the oil duct that splashes on the inner face table of at least one of left side shell and right side shell, cooling oil duct one end and cooling module intercommunication, the other end and the oil duct of motor intracavity, the axial core hole of driving motor and generator, the cooling oil duct intercommunication in gear chamber, with the stator of spray cooling driving motor and generator respectively, the rotor and motor shaft bearing of cooling lubrication driving motor and generator, lubrication gear shafting's right bearing.
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
The present embodiment provides a lubrication cooling system of a hybrid drive system, wherein the hybrid drive system includes a housing including a left housing 1, a right housing 2, and a rear end cover 3, as shown in fig. 1-1, 1-2, and 4-1 to 4-5, the left housing 1 being disposed between the right housing 2 and the rear end cover 3. Wherein right shell 2 encloses with left shell 1 and closes and form gear chamber 6, and gear chamber 6 is used for holding the gear shaft system, and left shell 1 encloses with rear end cover 3 and closes and form motor chamber 7, and motor chamber 7 is used for holding driving motor 108 and generator 109. Fig. 4-1 and 4-2 show a left shell-right shell coupling flange surface 219 and a left shell-rear end cap coupling flange surface 220, wherein the left shell 1 and the right shell 2 can be connected through a flange, and the left shell 1 and the rear end cap 3 can be connected through a flange.
The left side of the left case is not limited in azimuth, but is described by a name, and the right side of the right case and the rear end cover are not limited in azimuth.
Specifically, the hybrid drive system includes a drive motor 108, a differential, a clutch 111, and a generator 109. Referring to fig. 1-1, 1-2 and 4-1 to 4-5, the gear shaft system includes a drive motor shaft 101, a middle shaft 102, a differential shaft 103, a clutch shaft 104, an engine shaft 105 and a generator shaft 106, and the drive motor shaft 101, the middle shaft 102, the differential shaft 103, the clutch shaft 104, the engine shaft 105 and the generator shaft 106 are sequentially engaged and in driving connection. The intermediate shaft 102, the differential shaft 103, the clutch shaft 104, and the engine shaft 105 are mounted on the left housing 1 through left bearings, on the right housing 2 through right bearings, respectively, and the drive motor shaft 101 and the generator shaft 106 are mounted on the rear end cover 3 through left bearings, and on the left housing 1 through right bearings, respectively.
The power transmission paths of the drive motor 108, the intermediate shaft 102 and the differential mechanism realize direct drive of the vehicle by the motor, and the power transmission paths of the engine and the generator 109 realize power generation. The clutch is positioned between the two power transmission paths, and the series and parallel modes of the hybrid power type driving system are switched through locking and disconnecting of the clutch.
The clutch is provided with a clutch pump 111 for controlling the locking and unlocking of the clutch, wherein the clutch pump 111 is arranged on the left shell 1, and an output oil duct from the clutch pump to the clutch and an oil suction duct of the clutch pump are correspondingly arranged.
Referring to fig. 1-1 to 3 and fig. 7 and 8, the lubrication and cooling system includes splash lubrication and active lubrication, wherein the active lubrication is provided by a cooling module 115 and a cooling pump 110 provided by the lubrication and cooling system, and the splash lubrication is provided by splash oil guiding grooves provided in a left housing 1 and a right housing 2 in a gear cavity to splash lubricate a bearing of a gear shaft system. In which a gearbox oil 5 is shown in fig. 2.
The splash guard of the present embodiment includes a left case 1 and a right case 2, or may be provided in the left case 1 or the right case 2. Specifically, a splash oil guide groove is arranged on the inner surface of at least one of the left shell and the right shell, and the inner surface refers to a side surface, close to the right shell, of the left shell.
1-4-5, the cooling pump 110 is mounted on the left casing 1, one end of the cooling pump 110 is communicated with the gear cavity 6, the other end of the cooling pump 110 is connected with the cooling module 115, and FIG. 3 shows an oil outlet channel 133 of the cooling pump inside the left casing and realizes connection of the cooling pump and the cooling module through a pipe joint 132. Therefore, oil in the gear cavity is pumped to the cooling module for cooling, and active lubrication is performed subsequently. The cooling module 115 may be disposed in an external connection or in a housing, as compared to a housing of the hybrid drive system.
The lubrication cooling system is provided with a cooling oil duct in the rear end cover 3, the cooling module 115 is connected with the cooling oil duct, and the cooling module guides the cooled oil to a target position through the cooling oil duct to complete active lubrication. Wherein the target position comprises an oil spray pipe 112 connected with the cooling oil passage to spray-cool the stator 118 of the drive motor 108 and the generator 109; a core hole of the core 113 communicating with the cooling oil passage, including a core hole of the core 113 of the drive motor 108 and a core hole of the core 113 of the generator 109, to cool and lubricate the rotor 117 of the drive motor 108 and the motor shaft bearing, and the rotor 117 of the generator 109 and the motor shaft bearing; and the cooling oil guide groove is communicated with the cooling oil passage and is arranged in the gear cavity 6 so as to lubricate the right bearing of the gear shaft system.
In summary, in the lubrication cooling system of the hybrid power type driving system provided in this embodiment, through a single cooling pump and a single cooling module, by combining the oil injection pipe 112 and the related pipeline of the shaft core 113, lubrication on the stator, the rotor and the motor shaft bearings of the driving motor 108 and the generator 109 can be realized, by the splash oil guiding groove and the cooling oil guiding groove matched with the cooling oil duct, the forced lubrication on the bearing seat and the oil seal of the gear shaft system is realized by adopting a mode of combining splash lubrication and active lubrication, so that the cooling or lubrication requirements of each part are met, and the utilization rate of lubricating oil is effectively improved.
Optionally, as shown in fig. 1-1 to 3, the lubrication cooling system is further provided with a filter 120 in the gear cavity, the filter 120 is fixed to the left housing 1, and the filter 120 is connected to the cooling pump 110. The oil in the gear cavity 6 at the bottom of the shell is connected with the cooling module 115 through the filter 120, the cooling pump 110, the left shell oil duct 133 and the straight-through pipe joint 132, cooled and sent to the inside of the rear end cover, and distributed through the plurality of oil ducts 131, and part of the oil is sprayed and cooled to the motor stator 118 through the oil spraying pipe 112, wherein the distribution and spraying state of the oil spraying pipe are shown in fig. 3 and 5.
The motor shaft bearing comprises a left bearing and a right bearing. The cooling oil passage communicates with the shaft core 113 to cool and lubricate the rotor 117 and the motor shaft bearing of the drive motor 108, and the rotor 117 and the motor shaft bearing of the generator 109. As shown in fig. 6, one end of the cooling oil passage is communicated to the left bearing of the motor shaft, and the cooling oil passage is communicated with the shaft core hole of the shaft core 113. The shaft core 113 is provided with a first oil hole 113-1 and a second oil hole 113-2 which are distributed radially, one end of the first oil hole 113-1 is communicated with the shaft core hole, the other end of the first oil hole is communicated to the motor rotor 117, one end of the second oil hole 113-2 is communicated with the shaft core hole, and the other end of the second oil hole is communicated to the right bearing of the motor shaft.
Wherein, the shaft core 113 includes the shaft core 113 of the driving motor 108 and the shaft core 113 of the generator 109, the corresponding shaft core hole includes the shaft core hole of the driving motor 108 and the shaft core hole of the generator 109, the motor shaft left bearing 125 includes the left bearing 217 of the driving motor shaft 101 and the left bearing 218 of the generator shaft 106, the motor rotor includes the motor rotor of the driving motor 108 and the motor rotor of the generator 109, and the motor shaft right bearing 126 includes the right bearing 207 of the driving motor shaft 101 and the right bearing 212 of the generator shaft 106.
Specifically, an oil duct 221 for delivering oil from the cooling module 115 to the motor shaft is provided in the rear end cover 3, the oil duct 221 and the motor shaft core hole 113 are formed, a part of the oil is led to the left bearing 125 of the motor shaft, the other part of the oil enters the core hole, and after the oil is dispersed by centrifugal force during rotation of the shaft, the motor rotor 117 is cooled through the first oil hole 113-1, and the right bearing 126 of the motor shaft is lubricated through the second oil hole 113-2.
In one embodiment, one end of the cooling oil passage is connected to the left bearing 125 of the motor shaft, and an oil guiding ring 223 is disposed on the rear end cover. As shown in fig. 6, the oil guiding ring 223 includes an oil guiding cavity formed by surrounding a ring wall and a ring wall, the ring wall is penetrated through the shaft core hole, the ring wall and the wall of the shaft core hole of the shaft core 113 form an oil passing gap 222, one end of the oil passing gap 222 is communicated with the shaft core hole, and the other end is communicated to the left bearing 125 of the motor shaft. One end of the oil guiding cavity is communicated with the cooling oil duct, and the other end of the oil guiding cavity is communicated with the shaft core hole, so that the cooling oil duct, the oil guiding cavity, the shaft core hole and the oil passing gap are sequentially communicated, and lubricating oil cooled by the cooling module 115 is led to the left bearing 125 of the motor shaft. In the scheme, the oil guide ring 223 is utilized, the additional oil duct is avoided, and the whole structure is compact.
Alternatively, as shown in fig. 2 and 7, the lubrication cooling system is provided with an oil collecting box 114, the oil collecting box 114 is arranged in the gear cavity 6, the cooling oil duct, the oil collecting box 114 and the cooling oil guiding groove are sequentially connected, and forced lubrication is performed on the right bearing and the oil seal of the gear shaft system through the oil collecting box 114. Wherein, as shown in fig. 3, the connection of the cooling oil passage and the oil collecting box 114 is realized by the left shell inside oil inlet collecting box oil passage 140 and the pipe joint 141. In addition to the function of distributing oil, the oil collection box 114 reduces oil at the bottom of the gear cavity when oil is stored, reduces oil stirring loss of the gears, and improves transmission efficiency of the whole electric drive system.
In the above-described scheme in which the cooling oil guide groove communicates with the cooling oil passage to lubricate the right bearing of the gear shaft system, the cooling oil guide groove specifically includes guiding oil to the right bearings of the intermediate shaft 102, the differential shaft 103, the clutch shaft 104, and the engine shaft 105 to complete lubrication.
Alternatively, as shown in FIG. 7, the cooling oil guide grooves include a countershaft cooling oil guide groove 236, a differential shaft cooling oil guide groove 235, a clutch shaft cooling oil guide groove 237, and an engine shaft cooling oil guide groove 238. The top end of the intermediate shaft cooling oil guide groove 236 is communicated with the oil collecting box 114 through a long nozzle, and the bottom end is communicated to the right bearing 201 of the intermediate shaft. The top end of the differential shaft cooling oil guide groove 235 is communicated with the oil collecting box 114 through a long nozzle, and the bottom end is communicated to the right bearing 202 of the differential shaft. The top end of the clutch shaft cooling oil guide groove 237 is communicated with the oil collecting box 114 through a long nozzle, and the bottom end is communicated to the right bearing 203 of the clutch shaft. The top end of the engine shaft cooling oil guide groove 238 communicates with the oil collection box 114 through a long nozzle, and the bottom end communicates with the right bearing 205 of the engine shaft.
As shown in fig. 7, the long nozzles are vertically arranged, the long nozzles are provided with V-shaped oil guiding grooves, the V-shaped oil guiding grooves are configured to gradually decrease in transverse dimension along the downward direction, and oil in the oil collecting box 114 is guided into each cooling oil guiding groove through the cooperation of the long nozzles to lubricate and cool the related right bearing.
With respect to the above splash guide groove, the splash lubrication is completed, and the splash guide grooves are provided in the left and right cases 1 and 2, and in one embodiment, the splash guide groove includes a first splash guide groove located in the right case, and second to eighth splash guide grooves located in the left case.
Specifically, as shown by the arrow in fig. 7, the first splash oil guide groove is used for the forward gear, one end of the first splash oil guide groove is led into the oil flow 250 stirred up by the differential mechanism, and the other end is respectively led to the right bearing of the differential shaft and the right bearing of the intermediate shaft, on the one hand, along the inner wall of the housing, on the other hand, through the upper part oil guide groove 251 of the housing, to the right bearing 202 of the differential shaft, on the other hand, upward in the direction 252 along the inner wall of the housing, and through the part oil guide groove 236, to the right bearing 201 of the intermediate shaft, so that lubrication of the right bearing of the differential shaft and the right bearing of the intermediate shaft is completed.
As shown in fig. 8, the broken line in fig. 8 is the outline of each shafting gear, and the stirring oil of the gear is guided to the bearing position to be lubricated by the guiding of the oil guiding structure of the shell.
The second splash oil guiding groove is used for a forward gear and comprises a part of oil guiding groove 224 and an oil guiding hole 225 positioned on a left bearing 209 seat of the differential shaft as shown in fig. 8, one end of the second splash oil guiding groove guides oil flow stirred up by the differential mechanism, the other end of the second splash oil guiding groove guides the oil flow to the left bearing 209 of the differential shaft through the part of oil guiding groove 224 and the oil guiding hole 225, and splash lubrication of the left bearing 209 of the differential shaft is completed.
The third splash oil deflector is used for forward and reverse gears, one end of the third splash oil deflector is used for guiding oil flow stirred by the differential mechanism to the left bearing 208 of the intermediate shaft, and the other end of the third splash oil deflector is used for guiding the oil flow stirred by the differential mechanism to the gear part of the intermediate shaft along the direction of 246 by the diversion of a rib 244 above the left side of the differential mechanism in the figure, and then guiding the oil flow stirred by the differential mechanism to the left bearing 208 hole of the intermediate shaft along the rib 229 and the oil deflector 228. Wherein the ribs 229 are annularly arranged along the lower edge of the left bearing 208 seat of the intermediate shaft, and the oil guiding groove transversely penetrates through the upper side of the left bearing 208 of the intermediate shaft.
It should be noted that the plurality of arrows in the annular distribution outside the large ring of the differential in fig. 8 represent clockwise rotation of the differential gear in the forward gear, the left side of the graph in fig. 8 being near the rear of the vehicle and the right side being near the front of the vehicle. In the reverse state, the differential gear rotates counterclockwise in fig. 8. In the reverse gear state, the oil guide groove 228 can also block and guide the lubricating oil splashed by the gears into the left bearing 208 of the intermediate shaft.
As shown in fig. 8, the fourth splash oil guide groove is used for the forward gear, one end of the fourth splash oil guide groove guides the oil flow stirred up by the differential mechanism, the oil flow is divided by 244 ribs, a part of the fourth splash oil guide groove is collided with the first oil baffle rib 247 at the high position of the intermediate shaft, and the rear oil flow is returned to the oil collecting box 114.
As shown in fig. 8, the fifth splash oil guide groove is used for reverse gear, one end of the fifth splash oil guide groove guides oil flow stirred up by the differential mechanism, and the splash oil flow is guided to the gear part of the intermediate shaft through the rib 227. The rib 227 is specifically annular and arranged on the upper right side of the differential mechanism, and is arranged on a moving path of splashing oil caused by counterclockwise rotation of the differential mechanism during reverse gear.
As shown in fig. 8, a sixth splash oil deflector for forward and reverse gears, one end of which directs the oil stream churned up by the clutch, and the other end of which directs to the left bearing 210 of the clutch. The sixth splash oil guide groove is specifically an oil return groove 231 in fig. 8, the oil return groove 231 is provided with two vertical groove walls, a notch is formed at the upper end of the groove wall of the oil return groove 231, and splash oil enters the oil return groove 231 through the notch and is guided to the left bearing 210 of the clutch. Further, the oil return groove 231 may also communicate with the motor cavity 8 to guide the lubricating oil in the motor cavity 8 into the left bearing 210 of the clutch in the gear cavity 6, improving the lubrication effect and the lubricating oil utilization rate.
As shown in fig. 8, the seventh splash oil guide is for forward gears, one end of which guides the oil flow stirred up by the engine shaft gear, along the bead 233 and through the oil guide groove 232, and the other end of which guides to the left bearing 211 of the engine shaft. The ribs 233 are disposed along the upper annular edge of the left bearing 211 seat of the engine shaft, and the oil guide grooves 232 are disposed laterally in the region of the left bearing 211 bore of the engine shaft to block and guide splash oil into the left bearing 211 of the engine shaft.
As shown in fig. 8, the eighth splash oil guide groove is used for a forward gear, one end of the eighth splash oil guide groove guides oil flow stirred up by a gear of an engine shaft, and one end of the eighth splash oil guide groove collides with a second oil baffle rib 248 at the high position of the engine shaft through a rib 233 to guide the oil flow to an oil collecting box.
As shown in fig. 8, the left shell is further provided with an oil return channel, and the oil return channel is communicated with the gear cavity and the motor cavity, so that oil in the motor cavity flows back into the gear cavity.
Alternatively, as shown in fig. 8, the oil return passage includes a first oil return groove provided near the cooling pump, a second oil return groove 226 provided toward the left bearing 209 of the differential shaft, a third oil return hole 230 provided toward the left bearing 208 of the intermediate shaft, and a fourth oil return groove 231 provided toward the left bearing 210 of the clutch shaft. The oil return channel is fully arranged, so that the utilization rate of lubricating oil is improved, and the lubricating effect on the left bearing of the differential shaft, the left bearing of the intermediate shaft and the left bearing of the clutch shaft is improved.
The first oil return groove provided near the cooling pump includes a main oil return groove 240, and oil return holes 241, 242, and 243 shown in fig. 8 to return oil of the motor chamber 8 to the gear chamber 6 for reuse in lubrication and cooling work. The arrangement close to the cooling pump is beneficial to the operation of the cooling pump. As shown in fig. 8, the oil return hole 241 is also provided relatively close to the left bearing 210 of the clutch shaft.
Alternatively, as shown in fig. 1-1, 1-2 and 2, the clutch pump 111 and the cooling pump 110 are disposed close to each other, and an oil pump chamber 7 accommodating the clutch pump 111 and the cooling pump 110 is provided in the housing.
The embodiment also provides a vehicle, which comprises the lubricating and cooling system, meets the cooling or lubricating requirements of all parts of the hybrid power driven vehicle, and effectively improves the utilization rate of lubricating oil.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (9)

1. A lubrication and cooling system of a hybrid drive system, comprising:
a left shell;
a gear cavity for accommodating a gear shaft system is formed between the right shell and the left shell;
a motor cavity for accommodating a driving motor and a generator is formed between the rear end cover and the left shell, and a cooling oil duct is formed in the rear end cover; the left shell is arranged between the right shell and the rear end cover;
a cooling module; and
a cooling pump connected between the gear cavity and the cooling module;
wherein, splash oil guiding grooves are arranged on the inner surface of at least one of the left shell and the right shell; one end of the cooling oil duct is communicated with the cooling module, and the other end of the cooling oil duct is communicated with an oil injection pipe in the motor cavity, a shaft core hole of the driving motor and the generator and a cooling oil guide groove of the gear cavity, so that the driving motor and a stator of the generator are cooled in a spraying manner, a rotor of the driving motor and the generator and a motor shaft bearing are cooled and lubricated, and a right bearing of the gear shaft system is lubricated;
the lubricating and cooling system is provided with an oil collecting box, the oil collecting box is arranged in the gear cavity, the cooling oil duct is sequentially connected with the oil guiding groove, so that the cooling oil duct is communicated with the oil guiding groove to lubricate a right bearing of the gear shaft system, and the cooling oil duct is sequentially connected with the oil collecting box through an oil spraying pipe, a left shell inner oil inlet box oil duct and a pipe joint.
2. The lubrication cooling system according to claim 1, wherein the motor shaft bearing includes a motor shaft left bearing and a motor shaft right bearing, one end of the cooling oil passage is communicated to the motor shaft left bearing, and the cooling oil passage is communicated with the shaft core holes of the shaft cores of the drive motor and the generator;
the shaft core is provided with a first oil hole and a second oil hole which are distributed radially, one end of the first oil hole is communicated with the shaft core hole, the other end of the first oil hole is communicated with the motor rotor, one end of the second oil hole is communicated with the shaft core hole, and the other end of the second oil hole is communicated with the right bearing of the motor shaft;
the shaft core comprises a shaft core of the driving motor and a shaft core of the generator, the corresponding shaft core hole comprises a shaft core hole of the driving motor and a shaft core hole of the generator, the left bearing of the motor shaft comprises a left bearing of the driving motor shaft and a left bearing of the generator shaft, the motor rotor comprises a motor rotor of the driving motor and a motor rotor of the generator, and the right bearing of the motor shaft comprises a right bearing of the driving motor shaft and a right bearing of the generator shaft.
3. The lubrication and cooling system according to claim 2, wherein the rear end cover is further provided with an oil guide ring, the oil guide ring comprises a ring wall and an oil guide cavity formed by encircling the ring wall, the ring wall penetrates through the shaft core hole, an oil passing gap is formed between the ring wall and the shaft core hole wall of the shaft core, one end of the oil passing gap is communicated with the shaft core hole, and the other end of the oil passing gap is communicated to a left bearing of a motor shaft; one end of the oil guiding cavity is communicated with the cooling oil duct, and the other end of the oil guiding cavity is communicated with the shaft core hole.
4. The lubrication and cooling system according to claim 1, wherein the drive system includes the drive motor, differential, clutch and generator, the gear shaft system includes a drive motor shaft, an intermediate shaft, a differential shaft, a clutch shaft, an engine shaft and a generator shaft, which are sequentially engaged in driving connection, the intermediate shaft, differential shaft, clutch shaft and engine shaft being mounted to the left housing by left bearings, to the right housing by right bearings, respectively, the drive motor shaft and generator shaft being mounted to the rear end cap by left bearings, to the left housing by right bearings, respectively;
the cooling oil guide groove is configured to guide oil to right bearings of the intermediate shaft, the differential shaft, the clutch shaft, and the engine shaft for lubrication;
the left shell is provided with a clutch pump, an output oil duct from the clutch pump to the clutch and an oil suction oil duct of the clutch pump, and the oil suction oil duct of the clutch pump is communicated with the gear cavity so as to control the locking and the disconnection of the clutch.
5. The lubrication and cooling system according to claim 4, wherein the cooling oil guide groove includes:
the middle shaft is cooled and guided to the oil groove, the top end is communicated with the oil collecting box through a long nozzle, and the bottom end is communicated to the right bearing of the middle shaft;
the top end of the differential shaft cooling oil guide groove is communicated with the oil collecting box through a long nozzle, and the bottom end of the differential shaft cooling oil guide groove is communicated to a right bearing of the differential shaft;
the clutch shaft is cooled and guided to the oil groove, the top end is communicated with the oil collecting box through a long nozzle, and the bottom end is communicated to the right bearing of the clutch shaft; and
the top end of the engine shaft cooling oil guide groove is communicated with the oil collecting box through a long nozzle, and the bottom end of the engine shaft cooling oil guide groove is communicated to a right bearing of the engine shaft;
wherein the long mouth is arranged vertically, the long mouth is provided with a V-shaped oil guiding groove, and the V-shaped oil guiding groove is configured to gradually reduce in transverse dimension along the downward direction.
6. The lubrication cooling system of claim 4, wherein the splash oil guide includes a first splash oil guide groove in the right housing for forward gear, one end leading into the oil flow churned up by the differential, the other end leading to the right bearing of the differential shaft and the right bearing of the intermediate shaft, respectively, and the left housing:
the second splash oil guide groove is used for guiding the oil flow stirred by the differential mechanism into the forward gear at one end and guiding the oil flow to the left bearing of the differential shaft at the other end;
the third splash oil guide groove is used for forward gear and reverse gear, one end of the third splash oil guide groove is used for guiding oil flow stirred by the differential mechanism, and the other end of the third splash oil guide groove is used for guiding the left bearing of the intermediate shaft;
the fourth splash oil guide groove is used for guiding the oil flow stirred by the differential mechanism into the forward gear at one end, and the oil flow is guided to the oil collecting box through the first oil baffle rib at the high position of the intermediate shaft;
a fifth splash oil guiding groove, which is used for reversing gear, one end of which is used for guiding oil flow stirred by the differential mechanism, and the other end of which is used for guiding the oil flow to the gear part of the intermediate shaft;
a sixth splash oil guide groove, which is used for forward gear and reverse gear, one end of which is used for guiding the oil flow stirred up by the clutch, and the other end of which is used for guiding the left bearing of the clutch;
a seventh splash oil guide groove for guiding the oil flow stirred up by the engine shaft gear to one end of the forward gear and guiding the oil flow to the left bearing of the engine shaft to the other end of the splash oil guide groove; and
an eighth splash oil guide groove, which is used for guiding the oil flow stirred up by the engine shaft gear to the oil collecting box through a second oil baffle rib at the high position of the engine shaft at one end of the eighth splash oil guide groove;
the left shell is further provided with an oil return channel which is communicated with the gear cavity and the motor cavity, so that oil in the motor cavity flows back into the gear cavity.
7. The lubrication and cooling system according to claim 6, wherein said oil return passage includes:
the first oil return groove is arranged close to the cooling pump;
the second oil return groove is arranged towards the left bearing of the differential shaft;
the third oil return hole is arranged towards the left bearing of the intermediate shaft; and
and the fourth oil return groove is arranged towards the left bearing of the clutch shaft.
8. The lubrication and cooling system according to claim 1 or 7, wherein a filter is further provided in the gear chamber, the filter being fixed to the left housing, the filter being connected to the cooling pump.
9. A vehicle comprising a lubrication and cooling system according to any one of claims 1-8.
CN202110801056.7A 2021-07-15 2021-07-15 Lubricating and cooling system of hybrid power type driving system and vehicle Active CN113669435B (en)

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