CN113525066A - Hybrid drive system's casing and vehicle - Google Patents
Hybrid drive system's casing and vehicle Download PDFInfo
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- CN113525066A CN113525066A CN202110800282.3A CN202110800282A CN113525066A CN 113525066 A CN113525066 A CN 113525066A CN 202110800282 A CN202110800282 A CN 202110800282A CN 113525066 A CN113525066 A CN 113525066A
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- oil
- clutch
- gear
- cavity
- motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- 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
- B60K6/405—Housings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- 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
- B60K6/42—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 the architecture of the hybrid electric vehicle
- B60K6/44—Series-parallel type
- B60K6/442—Series-parallel switching type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R17/00—Arrangements or adaptations of lubricating systems or devices
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- 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
- Y02T10/62—Hybrid vehicles
Abstract
The invention discloses a shell of a hybrid power type driving system, relates to the technical field of hybrid power driving, and solves the technical problem of hidden trouble of insufficient active lubrication caused by vehicle steering or inclination in the related art. Including left shell, rear end cap and right shell, between right shell and the rear end cap are located to the left shell, form the gear chamber of holding gear shaft system between right shell and the left shell, form the motor chamber of holding driving motor and generator between rear end cap and the left shell, wherein, be equipped with the oil gallery on the left shell, the oil gallery both ends communicate with motor chamber and gear chamber respectively to with the leading-in gear intracavity of lubricating oil in motor chamber, the oil gallery is greater than 20 with level line's contained angle. Through the arrangement angle of the oil return grooves, lubricating oil in a motor cavity of the whole vehicle in an extreme state such as a right-turn acceleration of 0.36G or a 20-degree left slope can be smoothly guided to a bearing part in a gear cavity along the oil return grooves, and sufficient lubrication is guaranteed.
Description
Technical Field
The invention relates to the technical field of hybrid power driving, in particular to a shell 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, a plurality of parts such as a motor stator and a motor rotor, a bearing, an oil seal, a gear and the like need to be lubricated and cooled, and compared with the traditional gear box, the difficulty of a lubricating and cooling mode which can meet the requirement only by means of splash lubrication is higher. Particularly, the shafting is arranged side by side instead of a planetary gear type, and the oil is difficult to be guided to a high-position gear shafting only by means of gear stirring splashing.
When a combination mode of active lubrication and splash lubrication is adopted, the hidden trouble of insufficient lubrication caused by oil return defect due to the fact that steering and inclining conditions exist when a vehicle runs is urgently needed to be improved.
Disclosure of Invention
The application provides a hybrid drive system's casing has solved among the relevant art because the vehicle turns to or the slope condition leads to having the technical problem of the hidden danger of initiative lubrication deficiency.
The application provides a hybrid drive system's casing, including left shell, rear end cap and right shell, form the gear chamber of holding gear shaft system between right side shell and the left shell, form the motor chamber of holding driving motor and generator between rear end cap and the left shell, the left shell is located between right shell and the rear end cap, wherein, be equipped with the oil gallery on the left shell, the oil gallery both ends communicate with motor chamber and gear chamber respectively, in order to the leading-in gear intracavity of lubricating oil with the motor chamber, the oil gallery is greater than 20 with water flat line's contained angle.
Optionally, the oil return groove comprises a differential oil return groove, the differential oil return groove is arranged in the left shell, one end of the differential oil return groove is communicated to a left differential bearing hole of the left shell, and an included angle between the differential oil return groove and a horizontal line is greater than 20 degrees, so that the left bearing or oil seal of the differential is guaranteed to be lubricated by oil in the left limited state of the whole vehicle on a left inclined slope with a right rotation acceleration of 0.36G or 20 degrees.
Optionally, the oil return groove comprises a clutch oil return groove, the clutch oil return groove is arranged on the left shell, one end of the clutch oil return groove is communicated to a clutch left bearing hole of the left shell, and an included angle between the clutch oil return groove and a horizontal line is greater than 20 degrees, so that oil return lubrication of a left bearing or an oil seal of the clutch is guaranteed when the whole vehicle is in an extreme state such as a right-turning acceleration of 0.36G or a 20-degree left slope.
Optionally, the groove bottom surface of the oil return groove is in a planar arrangement, and one end of the oil return groove close to the motor cavity is higher than one end of the oil return groove close to the gear cavity.
Optionally, the bottom of the rear end cover is provided with an inward protrusion to reduce the space at the bottom of the motor cavity.
Optionally, a driving motor and a generator are arranged in the motor cavity, the generator is arranged lower than the driving motor, and the protrusions are arranged at intervals along the outer edge profile of the generator.
Optionally, a driving motor and a generator are arranged in the motor cavity, an intermediate shaft, a differential, a clutch and an engine shaft are arranged in the gear cavity, and the driving motor, the intermediate shaft, the differential, the clutch, the engine and the generator are sequentially in gear engagement connection.
Optionally, a cooling pump cavity and a clutch pump cavity are arranged at the bottom of the left shell, the cooling pump cavity is used for installing a cooling oil pump so as to guide lubricating oil in the gear cavity to the motor cavity and the gear cavity after being guided to the cooling module, and the clutch pump cavity is used for accommodating the clutch pump so as to control the locking and the disconnection of the clutch;
the left shell is provided with an oil suction duct of the cooling oil pump, an output oil duct of the cooling oil pump, an oil suction duct of the clutch pump and an output oil duct from the clutch pump to the clutch.
Optionally, the left shell and the right shell are provided with splash lubrication oil ducts, each splash lubrication oil duct is formed by a triangular rib, the triangular rib is arranged above the side, which rotates upwards, of the gear of the differential when the vehicle moves forward, so that the oil stirred by the differential is divided into three strands, the three strands of oil are guided to a bearing seat of the differential, one strand of oil is guided to a gear of the intermediate shaft, and the other strand of oil rushes to the top of the gear cavity, so that the oil is guided to a lubrication part below through a protruding rib at the top of the gear cavity.
A vehicle comprises the shell of the hybrid power type driving system.
The beneficial effect of this application is as follows: the shell is composed of a left shell, a rear end cover and a right shell, a motor cavity and a gear cavity are formed, the motor cavity and the gear cavity are used for a hybrid power driving system, the gear cavity is used for each shaft gear transmission pipe, the motor cavity is used for accommodating a motor of the hybrid power driving system, the motor comprises a driving motor and a generator, the left shell is provided with an oil return groove, lubricating oil conveyed to the motor cavity in the cooling and lubricating process of the motor is guided back to the gear cavity, the lubricating efficiency is improved, the included angle between the oil return groove and a horizontal line is greater than 20 degrees, so that when the speed changing box examines a left slope or a right slope or a turning working condition and examines 36% of slope or 0.36G of acceleration at most, the arrangement angle of the oil return groove is set, the lubricating oil in the motor cavity can be smoothly guided to a bearing part in the gear cavity along the oil return groove under the extreme states of the right-turn acceleration of 0.36G or 20 degrees of left slope and the like, and sufficient lubrication is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
1-1 is a first schematic illustration of a mechanism of a hybrid drive system provided herein;
FIGS. 1-2 are second schematic diagrams of the mechanism of the hybrid drive system provided herein
FIG. 2-1 is a first schematic illustration of a housing of a hybrid drive system provided herein;
2-2 are second schematic illustrations of a housing of a hybrid drive system provided herein;
2-3 are third schematic illustrations of a housing of a hybrid drive system provided herein;
2-4 are fourth schematic illustrations of a housing of a hybrid drive system provided herein;
2-5 are fifth schematic illustrations of a housing of a hybrid drive system provided herein;
FIG. 3 is a schematic view of the left housing of FIG. 2;
FIG. 4 is a schematic structural view of an oil return groove communicating a motor cavity and a gear cavity in FIG. 3;
fig. 5 is a schematic view illustrating an oil storing state at the bottom of a motor cavity in a housing according to the present application.
The attached drawings are marked as follows:
1-left shell, 2-right shell, 3-rear end cap, 6-gear cavity, 8-motor cavity, 101-drive motor shaft, 102-intermediate gear shaft, 103-differential shaft, 104-clutch shaft, 105-engine shaft, 106-generator shaft, 108-drive motor, 109-generator, 110-cooling oil pump, 111-clutch oil pump, 201-intermediate shaft right bearing hole, 202-differential right bearing hole, 203-clutch right bearing hole, 205-engine shaft right bearing hole, 207-drive motor right bearing hole, 208-intermediate shaft left bearing hole, 209-differential left bearing hole, 210-clutch left bearing hole, 211-engine shaft left bearing hole, 212-generator right bearing hole, 215-cooling pump cavity, 216-clutch pump cavity, 217-drive motor left bearing hole, 218-generator left bearing hole, 226-differential oil return groove, 231-clutch oil return groove, 239-bump, 244-triangular rib, 247-bump rib, 251-horizontal line.
Detailed Description
The embodiment of the application solves the technical problem of the hidden trouble of insufficient active lubrication caused by the steering or inclining condition of the vehicle in the related technology by providing the shell of the hybrid power type driving system.
In order to solve the technical problems, the general idea of the embodiment of the application is as follows:
the utility model provides a hybrid drive system's casing, including left shell, rear end cap and right shell, form the gear chamber of holding gear shaft system between right shell and the left shell, form the motor chamber of holding driving motor and generator between rear end cap and the left shell, the left shell is located between right shell and the rear end cap, wherein, be equipped with the oil gallery on the left shell, the oil gallery both ends communicate with motor chamber and gear chamber respectively, in order to the leading-in gear intracavity of lubricating oil with the motor chamber, the oil gallery is greater than 20 with level line's contained angle.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
As shown in fig. 1-1 and 1-2, the hybrid drive system includes a drive motor 108, a generator 109, a differential (differential shaft 103), and a clutch (clutch shaft 104), wherein a drive motor shaft 101 is connected to the differential shaft 103 via an intermediate shaft 102, and a motor shaft 105 is connected to a generator shaft 106 and the clutch shaft 104, respectively. The electric drive system is connected side by side according to the sequence of a drive motor shaft 101, an intermediate gear shaft 102, a differential shaft 103, a clutch shaft 104, an engine shaft 105 and a generator shaft 106, a power transmission route of the drive motor shaft 101, the intermediate shaft 102 and the differential shaft 103 realizes that a motor directly drives a vehicle, a power transmission path of the engine shaft 105 and the generator shaft 106 realizes power generation, a clutch is positioned between the two power transmission paths, the clutch is locked and disconnected, and the conversion of a series mode or a parallel mode is realized.
As shown in fig. 2-1 to 2-5, the housing includes a left housing 1, a right housing 2, and a rear cover 3. The space enclosed by the left and right housings 1 and 2 after being combined by the flange face 219 forms a gear chamber 6 (the gear chamber 6 is schematically shown in fig. 4) for accommodating a gear shaft system such as the intermediate shaft 102, the differential shaft 103, the clutch shaft 104, and the engine shaft 105. The left shell 1 is provided with a differential left bearing hole 209, an intermediate shaft left bearing hole 208, a driving motor right bearing hole 207, a clutch left bearing hole 210, an engine shaft left bearing hole 211 and an engine right bearing hole 212. The gear chamber 6 is provided with a space for accommodating an oil pump filter, and the oil pump filter is used for filtering before oil enters the external cooling module. The right shell 2 is provided with a middle shaft right bearing hole 201, a differential right bearing hole 202, a clutch right bearing hole 203 and an engine shaft right bearing hole 205. The rear end cover 3 is provided with a driving motor left bearing hole 217 and a generator left bearing hole 218.
It should be noted that, the left side of the left shell is not limited by the orientation, but the name is used for description, and similarly, the right shell and the right and rear of the rear end cover are not limited by the orientation.
As shown in fig. 1-1 to 2-5, the left housing 1 and the rear end cover 3 are combined by the flange surface 220 to form a motor cavity 8 (the motor cavity 8 is schematically shown in fig. 4) for accommodating the driving motor 108 and the generator 109.
As shown in fig. 1-1 to 2-5, the left housing is provided, between the gear chamber 6 and the motor chamber 8, with a cooling pump chamber 215 that accommodates the cooling oil pump 110 and its motor, a clutch pump chamber 216 that accommodates the clutch oil pump 111 and its motor. The left shell is provided with an oil suction duct of the cooling oil pump, an output oil duct of the cooling oil pump, an oil suction duct of the clutch pump, and an output oil duct from the clutch pump to the clutch, which are respectively used for oil inlet and outlet of the cooling oil pump 110 and oil inlet and outlet of the clutch pump 111. Wherein, through cooling oil pump 110 with gear intracavity lubricating oil lead to the cooling module, lead to motor chamber 8 and gear chamber 6 after cooling, clutch pump 111 is used for controlling the locking and the disconnection of clutch.
As shown in fig. 3, the left case 1 is provided with an oil return groove and an oil return hole for introducing oil of the motor chamber 8 into the gear chamber 6. In fig. 3, dotted lines indicate outer contours of the shafting gears. The left bearing seat of the differential of the left shell 1 is provided with an oil guide groove 224 and a hole 225 penetrating through the bearing seat in a gear cavity and used for guiding oil stirred by a gear to enter a bearing and an oil seal; a differential oil return groove 226 is arranged between the gear cavity 6 and the motor cavity 8 near a left bearing seat of the differential of the left shell 1 to guide oil in the motor cavity to enter a differential left bearing hole 209; ribs 227 surrounding the differential gear are arranged on one side, upwards stirring oil, of the vehicle backward differential gear of the left shell; an oil guide groove 228 is formed beside a bearing seat of a left bearing hole 208 of the middle shaft of the left shell, an arc rib 229 is arranged to surround the middle shaft gear, oil stirred by the gear is guided to the bearing seat along the arc rib 229 through the oil guide groove 228 (similarly acting, the arc rib 233 with the position of the engine shaft 105 and the oil guide groove 232 are formed, the oil stirred by the engine gear passes through the oil guide groove 232 along the arc rib 233), an oil return hole 230 communicating the gear cavity 6 with the motor cavity 8 is formed in the bottom of the bearing seat, and the oil in the motor cavity 8 can enter the bearing seat of the left bearing hole 208 of the middle shaft through the oil return hole 230; the clutch bearing seat of the left shell is provided with a clutch oil return groove 231 for communicating the gear cavity 6 with the motor cavity 8, and oil in the motor cavity 8 and oil in the gear cavity 6 are guided to enter the clutch bearing seat.
As shown in fig. 3, a triangular rib 244 is arranged on the left housing 1 at the side obliquely above the upward rotating side of the differential gear when the vehicle is moving forward, so that oil stirred up along the inner wall of the housing of the differential is divided into three strands, one strand flows to a bearing seat of the differential along an oil guide groove 224, the other strand rushes to a gear part of a middle shaft along the direction 246, and the other strand rushes to the upper part of the transmission along the wall 245 of the housing.
With continued reference to fig. 3, the left housing 1 has raised ribs 247 at the upper portion of the gear chamber 6 to block and direct oil stirred up from the bottom of the transmission to devices that collect oil or lubricate other components such as gears, shafts, etc. The lubricating oil stirred up by the gear is divided by the structures such as the triangular ribs 244 and the like and flows to different positions respectively, so that the structure which is higher in position or difficult to reach in a splash lubrication mode is effectively lubricated, and the design is ingenious.
Similarly, there is a rib 248, and the oil stirred up by the gear of the engine shaft 105 is flushed along the oil guiding groove 233 of the engine shaft to the upper part of the gear box and is guided to the oil collecting device through the rib 248 above the engine shaft to lubricate the gear and shaft below.
It is to be noted that, as described above with respect to splash lubrication of the left shell, a splash lubrication oil passage may be specifically formed. The right shell is also provided with a splash lubrication oil channel to carry out splash lubrication on a right bearing seat and the like of the intermediate shaft.
As shown in fig. 4, the angle 250 between the oil return groove and the horizontal line 251 is larger than 20 ° on the upper part of the differential and clutch shaft bearing seat of the left housing 1. By taking the differential oil return groove 226 as an example, the differential oil return groove 226 is arranged on the left housing 1, one end of the differential oil return groove 226 is conducted to the differential left bearing hole 209 of the left housing 1, and the included angle between the differential oil return groove 226 and the horizontal line 251 is greater than 20 degrees, so that the bearing or the oil seal of the differential shaft 102 can be ensured to be lubricated in the extreme states of the finished vehicle, such as a right-turn acceleration of 0.36G or a 20-degree left slope, and the like. Specifically, for example, in the case of a left incline of 20 °, the angle 250 between the horizontal line 251 and the differential oil return groove 226 is greater than 20 °, so that the differential oil return groove 226 can still incline toward the gear cavity 6, and the oil 252 flowing down from the motor cavity forms the oil 253 flowing back to the gear cavity along the oil return groove as shown in fig. 4, and can smoothly flow to the bearing portion 254.
It should be noted that the angle 250 between the horizontal line 251 and the differential return slot 226 is greater than 20 °, as shown in fig. 4, and the horizontal line 251 refers to the horizontal line of the vehicle when the housing is horizontally disposed.
Similarly, the clutch oil return groove 231 is arranged on the left shell 1, one end of the clutch oil return groove 231 is communicated to the clutch left bearing hole 210 of the left shell 1, and the included angle between the clutch oil return groove 231 and the horizontal line 251 is greater than 20 degrees, so that the left bearing or oil seal of the oil return lubrication clutch in the upper limit state of the right-turning acceleration of the whole vehicle at 0.36G or 20 degrees left slope is ensured.
The arrangement of the differential oil return groove 226 and the clutch oil return groove 231 all belongs to the oil return grooves, two ends of each oil return groove are respectively communicated with the motor cavity 8 and the gear cavity 6, so that lubricating oil in the motor cavity 8 is led into the gear cavity 6, and the included angle between each oil return groove and a horizontal line is larger than 20 degrees. The oil return groove may be provided in the intermediate shaft, in addition to the differential oil return groove 226 and the clutch oil return groove 231.
Optionally, as shown in fig. 4, the groove bottom surface of the oil return groove is in a planar arrangement, and one end of the oil return groove close to the motor cavity is higher than one end of the oil return groove close to the gear cavity, and includes working conditions such as forward movement, left rotation, right rotation, and inclination of the vehicle, so that the differential, the clutch bearing, and the oil seal can be lubricated under various working conditions. In more possibilities, the bottom surface of the oil return groove comprises an arc-shaped arrangement or the like.
As shown in fig. 5, the bottom of the rear end cover 3 is provided with an inward protrusion 239, so that in the base that the rear end cover 3 and the left shell 1 form the motor cavity 8, the protrusion 239 forms an inward concave effect at the lowest part of the motor cavity 8, and the space at the bottom of the motor cavity is reduced to prevent the adverse situation that oil is accumulated at the bottom of the motor cavity 8 and cannot be fully utilized when the whole vehicle inclines to the right or turns to the left. As shown in fig. 5, if there is no protrusion 239, the oil that cannot be used by the oil pump chamber 257 due to accumulation in the bottom of the motor chamber 8 is the sum of the volumes of the space 255 and the space 256, and when the protrusion 239 is provided, the oil in the space 255 flows to the gear chamber to be used, so as to improve the utilization rate of the lubricating oil.
Alternatively, as shown in fig. 1-1 through 2-5, the generator 109 in the motor cavity 8 is lower than the drive motor 108, and the protrusion 239 may be primarily disposed with respect to the generator 109. As shown in fig. 5, the protrusions have a profile similar to the outer edge profile of the generator, with the protrusions being spaced along the outer edge profile of the generator.
This embodiment still provides a vehicle, including foretell hybrid drive system's casing, specifically is hybrid drive vehicle, is favorable to splashing the lubrication to gear intracavity eminence to and the oil gallery of guarantee whole car steering, slope, each operating mode of going straight is fully lubricated, still sets up the utilization ratio that improves lubricating oil through the arch of rear end cap bottom.
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. Therefore, it is intended that the appended claims be interpreted as including 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 changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A housing for a hybrid drive system, comprising:
a left shell;
the right shell and the left shell form a gear cavity for accommodating a gear shaft system;
the rear end cover and the left shell form a motor cavity for accommodating a driving motor and a generator; the left shell is arranged between the right shell and the rear end cover;
the left shell is provided with an oil return groove, two ends of the oil return groove are communicated with the motor cavity and the gear cavity respectively so as to guide lubricating oil in the motor cavity into the gear cavity, and an included angle between the oil return groove and a horizontal line is larger than 20 degrees.
2. The hybrid drive system of claim 1, wherein the oil-return grooves comprise differential oil-return grooves, the differential oil-return grooves are disposed on the left housing, one end of the differential oil-return grooves is connected to a left differential bearing hole of the left housing, and an included angle between the differential oil-return grooves and the horizontal posture direction of the entire vehicle is greater than 20 ° so as to ensure that the entire vehicle returns oil to lubricate a left bearing or an oil seal of the differential in an extreme state, such as a right-turn acceleration of 0.36G or a 20 ° left incline.
3. The hybrid drive system of claim 1, wherein the oil-return grooves comprise clutch oil-return grooves, the clutch oil-return grooves are disposed on the left housing, one end of the clutch oil-return grooves is connected to a clutch left bearing hole of the left housing, and an included angle between the clutch oil-return grooves and the horizontal posture direction of the whole vehicle is greater than 20 ° so as to ensure that the left bearing or oil seal of the clutch is lubricated by oil-return under extreme conditions such as a right-turn acceleration of 0.36G or a 20 ° left incline.
4. A hybrid drive system housing as set forth in any of claims 1-3, wherein said oil gallery has a floor surface, and wherein an end of said oil gallery adjacent said motor cavity is located higher than an end of said oil gallery adjacent said gear cavity.
5. A hybrid drive system housing as claimed in any one of claims 1 to 3, wherein the bottom of the rear end cap is provided with an inwardly directed projection to reduce the space at the bottom of the motor cavity.
6. A hybrid drive system housing as set forth in claim 5, wherein said motor cavity houses a drive motor and a generator disposed below said drive motor, said protrusions being spaced along an outer peripheral contour of said generator.
7. The hybrid drive system of claim 1, wherein the motor chamber houses a drive motor and a generator, the gear chamber houses an intermediate shaft, a differential, a clutch, and an engine shaft, and the drive motor, the intermediate shaft, the differential, the clutch, the engine, and the generator are sequentially connected in gear engagement.
8. The hybrid drive system housing of claim 7, wherein the bottom of the left casing is provided with a cooling pump cavity and a clutch pump cavity, the cooling pump cavity is used for installing a cooling oil pump to guide the lubricating oil in the gear cavity to the cooling module and then to the motor cavity and the gear cavity, and the clutch pump cavity is used for accommodating a clutch pump to control the locking and the disconnection of the clutch;
the left shell is provided with an oil suction duct of the cooling oil pump, an output oil duct of the cooling oil pump, an oil suction duct of the clutch pump and an output oil duct from the clutch pump to the clutch.
9. The hybrid drive system of claim 7, wherein the left and right cases are provided with splash lubrication ducts, the splash lubrication ducts comprising a triangular rib formed at a side obliquely above a side of the differential gear that rotates upward when the vehicle advances, so that the oil stirred up by the differential is divided into three streams, including a stream of oil that is guided to a bearing seat of the differential, a stream of oil that is guided to the intermediate shaft, and a stream of oil that is directed to a top of the gear cavity so as to be guided to a portion to be lubricated below by a protruding rib at the top of the gear cavity.
10. A vehicle characterized by comprising a housing of the hybrid drive system of any one of claims 1 to 9.
Priority Applications (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023185190A1 (en) * | 2022-03-30 | 2023-10-05 | 比亚迪股份有限公司 | Vehicle transmission, power assembly and vehicle |
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| CN113525066B (en) | 2022-11-01 |
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