CN108343732B - Power device and vehicle using same - Google Patents
Power device and vehicle using same Download PDFInfo
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- CN108343732B CN108343732B CN201710050406.4A CN201710050406A CN108343732B CN 108343732 B CN108343732 B CN 108343732B CN 201710050406 A CN201710050406 A CN 201710050406A CN 108343732 B CN108343732 B CN 108343732B
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- lubricating oil
- motor
- installation position
- baffle
- oil
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- 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
- F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
- F16H57/0424—Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes
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- 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
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps; Pressure control
- F16H57/0436—Pumps
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- 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
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- 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
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0482—Gearings with gears having orbital motion
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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
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention relates to a power device and a vehicle using the power device, the power device comprises a device shell, the device shell is divided into a motor cavity and a planet row cavity by a baffle, a motor is arranged in the motor cavity, a planet row is arranged in the planet row cavity, a bearing installation position for installing corresponding bearings is also arranged on the device shell, a baffle oil guide channel which is communicated with the planet row cavity and the motor cavity is arranged at the bottom of the baffle, the power device also comprises a lubricating oil pump, an oil inlet of which is connected with the corresponding cavity, the power device also comprises a lubricating oil channel which is connected with an oil outlet of the lubricating oil pump and is used for guiding lubricating oil to the planet row and the corresponding bearing installation position, and the lubricating oil channel is formed by an oil pipe and/or an oil hole which is arranged on the device shell. The invention solves the problem that the lubrication part is easy to lubricate and lose efficacy due to the lubrication of the lubricating grease in the prior art.
Description
Technical Field
The present invention relates to a power device and a vehicle using the same.
Background
Along with the increasing of environmental pollution pressure, the environmental pollution problem is increasingly prominent, and the development of energy-saving and environment-friendly automobiles is one of the important tasks of automobile manufacturers at present. Vehicles using hybrid power systems are increasingly supported by consumers and industries because of their advantages of being unaffected by charging equipment and charging time, unlimited range, and their remarkable energy saving and consumption reducing properties.
The common hybrid power system has three forms of series connection, parallel connection and series-parallel connection, the kinetic energy output by an engine in the series hybrid power system is converted into electric energy by a first motor and then drives a vehicle to run, and the energy loss is overlarge due to the fact that the energy is converted twice, so that the energy saving effect is relatively poor. The parallel system only has a single motor to lead the engine to be directly and mechanically connected with the vehicle, and the vehicle speed and the engine speed are in linear relation, so that the engine cannot be operated in a high-efficiency area for a long time. The existing hybrid power system is a double-planet-row hybrid power system disclosed by publication No. CN201325317Y, the hybrid power system comprises an engine and a power device, the power device comprises a device shell, the device shell is divided into a first motor cavity, a planet row cavity and a second motor cavity by a front partition board and a rear partition board, the first motor cavity is internally provided with a first motor, the second motor cavity is internally provided with a second motor, a front planet row and a rear planet row are arranged in the planet row cavity, a gear ring of the front planet row is connected with a planet carrier of the rear planet row, a sun gear of the front planet row is connected with a rotor of the first motor, the planet carrier of the front planet row is connected with the engine, a sun gear of the rear planet row is connected with a rotor of the second motor, and the system can realize multiple working modes such as quick start and stop of the engine, pure electric drive, hybrid drive, braking energy recovery and the like. But the system currently has the following problems: the device shell and corresponding parts arranged on the device shell are required to realize running fit through bearings, for example, front and rear transmission shaft bearing seats are required at the front and rear ends of the device shell respectively, bearings are arranged on the front and rear transmission shaft bearing seats to realize running fit of the device shell and the transmission shaft, front and rear motor bearing seats are required to be arranged at the two ends of the first motor chamber and the planet row chamber respectively, running fit of a rotor and the device shell is realized through bearings arranged on the front and rear motor bearing seats, lubrication is required at the positions of the bearings, and lubrication is required at the positions of the planet row, the lubricating mode used at present is to fill lubricating grease at the positions which need to be lubricated, the lubricating grease has the following defects in lubrication of the positions, the lubricating grease can be shifted from the positions to be lubricated, the positions to be lubricated cannot be continuously lubricated, and damage to the bearings, gears and the like can be caused; the lubricating grease can not take away impurities generated by abrasion, the heat dissipation effect is poor, and meanwhile, the replacement of the lubricating grease is troublesome.
Disclosure of Invention
The invention aims to provide a power device to solve the problem that lubrication parts are easy to lubricate and lose efficacy due to the adoption of lubricating grease in the prior art; the invention also aims to provide a vehicle using the power device.
In order to solve the problems, the technical scheme of the power device in the invention is as follows:
the power device comprises a device shell, wherein the device shell is divided into a motor cavity and a planet row cavity by a baffle, a motor is arranged in the motor cavity, a planet row is arranged in the planet row cavity, a bearing installation position for corresponding to bearing installation is further arranged on the device shell, a baffle oil guide channel for communicating the planet row cavity with the motor cavity is arranged at the bottom of the baffle, the power device further comprises a lubricating oil pump, an oil inlet of which is connected with the corresponding cavity, the power device further comprises a lubricating oil channel which is connected with an oil outlet of the lubricating oil pump and used for guiding lubricating oil to the planet row and corresponds to the bearing installation position, and the lubricating oil channel is formed by an oil pipe and/or an oil hole formed in the device shell.
The motor chamber is arranged on the front side of the planetary row chamber.
The bearing installation position comprises a transmission shaft bearing installation position and a rotor front bearing installation position arranged at the front end of the motor cavity, the transmission shaft bearing installation position is positioned at the front side of the rotor front bearing installation position, the lubricating oil channel comprises a first lubricating oil channel, the first lubricating oil channel comprises a first lubricating oil channel first part used for guiding lubricating oil to the transmission shaft bearing installation position, a channel outlet of the first lubricating oil channel first part is positioned at the front side of the transmission shaft bearing installation position, a transmission shaft oil seal is arranged at the front side of a channel outlet of the first lubricating oil channel first part on the device shell, and the first lubricating oil channel further comprises a first lubricating oil channel second part used for conducting the transmission shaft bearing installation position and the rotor front bearing installation position.
The rear side of the front bearing installation position of the rotor on the device shell is provided with a front motor oil baffle, and the front motor oil baffle is provided with an oil drain hole for conducting the front bearing installation position of the rotor and a motor cavity, and the position of the oil drain hole is higher than the lowest position of the front bearing installation position of the rotor.
The bearing mounting position comprises a rotor rear bearing mounting position positioned at the rear end of the motor cavity, the lubricating oil channel comprises a second lubricating oil channel, the second lubricating oil channel comprises an axial oil channel hole extending along the front-rear direction, the axial oil channel hole penetrates through a baffle between the motor cavity and the planet row cavity, the front end orifice of the axial oil channel hole guides lubricating oil to the rotor rear bearing mounting position, and the rear end orifice of the axial oil channel hole guides lubricating oil to the planet row in the planet row cavity.
The front side of the motor rear bearing installation position is provided with a motor rear oil baffle.
The motor chamber comprises a first motor chamber positioned at the front side of the planetary row chamber and a second motor chamber positioned at the rear side of the planetary row chamber, and the baffle comprises a first baffle positioned between the first motor chamber and the planetary row chamber and a second baffle positioned between the second motor chamber and the planetary row chamber.
The planet row chamber is provided with an oil return groove which is lower than the first motor chamber and the second motor chamber, and the lubricating oil pump is arranged in the oil return groove.
The bearing installation position comprises an input shaft bearing installation position and a first rotor front bearing installation position arranged at the front end of the first motor cavity, the input shaft bearing installation position is positioned at the front side of the first rotor front bearing installation position, the lubricating oil channel comprises a first lubricating oil channel, the first lubricating oil channel comprises a first lubricating oil channel first part for guiding lubricating oil to the input shaft bearing installation position, a channel outlet of the first lubricating oil channel first part is positioned at the front side of the input shaft bearing installation position, an input shaft oil seal is arranged at the front side of a channel outlet of the first lubricating oil channel first part on the device shell, and the first lubricating oil channel further comprises a first lubricating oil channel second part for conducting the input shaft bearing installation position and the first rotor front bearing installation position.
The device shell is provided with a first motor front oil baffle plate at the rear side of the first rotor front bearing installation position, and an oil drain hole for conducting the first rotor front bearing installation position and the first motor cavity is formed in the first motor front oil baffle plate, wherein the position of the oil drain hole is higher than the lowest position of the first rotor front bearing installation position.
The bearing mounting position further comprises a first rotor rear bearing mounting position located at the rear end of the first motor cavity, the lubricating oil channel comprises a second lubricating oil channel, the second lubricating oil channel comprises a first baffle axial oil channel hole extending along the front-rear direction, the first baffle axial oil channel hole penetrates through the first baffle, a front end orifice of the first axial oil channel hole guides lubricating oil to the first rotor rear bearing mounting position, and a rear end orifice of the axial oil channel hole guides lubricating oil to a planet row in the planet row cavity.
The front side of the first motor rear bearing installation position is provided with a first motor rear oil baffle.
The bearing installation position comprises an output shaft bearing installation position and a second rotor rear bearing installation position arranged at the rear end of the second motor cavity, the output shaft bearing installation position is positioned at the rear side of the second rotor rear bearing installation position, the lubricating oil channel comprises a third lubricating oil channel, the third lubricating oil channel comprises a third lubricating oil channel first part for guiding lubricating oil to the output shaft bearing installation position, a channel outlet of the third lubricating oil channel first part is positioned at the rear side of the output shaft bearing installation position, an output shaft oil seal is arranged at the rear side of a channel outlet of the third lubricating oil channel first part on the device shell, and the third lubricating oil channel further comprises a third lubricating oil channel second part for conducting the output shaft bearing installation position and the second rotor rear bearing installation position.
The device shell is provided with a second motor rear oil baffle plate at the front side of the second rotor rear bearing installation position, and an oil drain hole for conducting the second rotor rear bearing installation position and the second motor cavity is formed in the second motor rear oil baffle plate, and the position of the oil drain hole is higher than the lowest position of the second rotor rear bearing installation position.
The bearing mounting position further comprises a second rotor front bearing mounting position located at the front end of the second motor cavity, the lubricating oil channel comprises a fourth lubricating oil channel, the fourth lubricating oil channel comprises a second baffle axial oil channel hole extending along the front-rear direction, the second baffle axial oil channel hole penetrates through the second baffle, a front end orifice of the second axial oil channel hole guides lubricating oil to a planet row in the planet row cavity, and a rear end orifice of the axial oil channel hole guides lubricating oil to the second rotor front bearing mounting position.
The rear side of the second motor front bearing installation position is provided with a second motor front oil baffle.
The technical scheme of the vehicle in the invention is as follows:
the vehicle comprises a frame, the last power device that is provided with of frame, power device include the device casing, and the device casing is separated into motor cavity and planet row's cavity by separating, is provided with the motor in the motor cavity, is provided with the planet row in the planet row's cavity, still is provided with the bearing installation position that is used for corresponding bearing installation on the device casing, separates to keep off the bottom and is provided with the oil channel of keeping off of the intercommunication planet row's cavity and motor cavity, and power device still includes the oil inlet and corresponds the lubrication pump that the cavity links to each other, power device still include with the oil-out of lubrication pump links to each other be used for with lubrication oil direction planet row and correspond the lubrication oil channel of bearing installation position, lubrication oil channel comprises oil pipe and/or the oilhole of seting up on the device casing.
The motor chamber is arranged on the front side of the planetary row chamber.
The bearing installation position comprises a transmission shaft bearing installation position and a rotor front bearing installation position arranged at the front end of the motor cavity, the transmission shaft bearing installation position is positioned at the front side of the rotor front bearing installation position, the lubricating oil channel comprises a first lubricating oil channel, the first lubricating oil channel comprises a first lubricating oil channel first part used for guiding lubricating oil to the transmission shaft bearing installation position, a channel outlet of the first lubricating oil channel first part is positioned at the front side of the transmission shaft bearing installation position, a transmission shaft oil seal is arranged at the front side of a channel outlet of the first lubricating oil channel first part on the device shell, and the first lubricating oil channel further comprises a first lubricating oil channel second part used for conducting the transmission shaft bearing installation position and the rotor front bearing installation position.
The rear side of the front bearing installation position of the rotor on the device shell is provided with a front motor oil baffle, and the front motor oil baffle is provided with an oil drain hole for conducting the front bearing installation position of the rotor and a motor cavity, and the position of the oil drain hole is higher than the lowest position of the front bearing installation position of the rotor.
The bearing mounting position comprises a rotor rear bearing mounting position positioned at the rear end of the motor cavity, the lubricating oil channel comprises a second lubricating oil channel, the second lubricating oil channel comprises an axial oil channel hole extending along the front-rear direction, the axial oil channel hole penetrates through a baffle between the motor cavity and the planet row cavity, the front end orifice of the axial oil channel hole guides lubricating oil to the rotor rear bearing mounting position, and the rear end orifice of the axial oil channel hole guides lubricating oil to the planet row in the planet row cavity.
The front side of the motor rear bearing installation position is provided with a motor rear oil baffle.
The motor chamber comprises a first motor chamber positioned at the front side of the planetary row chamber and a second motor chamber positioned at the rear side of the planetary row chamber, and the baffle comprises a first baffle positioned between the first motor chamber and the planetary row chamber and a second baffle positioned between the second motor chamber and the planetary row chamber.
The planet row chamber is provided with an oil return groove which is lower than the first motor chamber and the second motor chamber, and the lubricating oil pump is arranged in the oil return groove.
The bearing installation position comprises an input shaft bearing installation position and a first rotor front bearing installation position arranged at the front end of the first motor cavity, the input shaft bearing installation position is positioned at the front side of the first rotor front bearing installation position, the lubricating oil channel comprises a first lubricating oil channel, the first lubricating oil channel comprises a first lubricating oil channel first part for guiding lubricating oil to the input shaft bearing installation position, a channel outlet of the first lubricating oil channel first part is positioned at the front side of the input shaft bearing installation position, an input shaft oil seal is arranged at the front side of a channel outlet of the first lubricating oil channel first part on the device shell, and the first lubricating oil channel further comprises a first lubricating oil channel second part for conducting the input shaft bearing installation position and the first rotor front bearing installation position.
The device shell is provided with a first motor front oil baffle plate at the rear side of the first rotor front bearing installation position, and an oil drain hole for conducting the first rotor front bearing installation position and the first motor cavity is formed in the first motor front oil baffle plate, wherein the position of the oil drain hole is higher than the lowest position of the first rotor front bearing installation position.
The bearing mounting position further comprises a first rotor rear bearing mounting position located at the rear end of the first motor cavity, the lubricating oil channel comprises a second lubricating oil channel, the second lubricating oil channel comprises a first baffle axial oil channel hole extending along the front-rear direction, the first baffle axial oil channel hole penetrates through the first baffle, a front end orifice of the first axial oil channel hole guides lubricating oil to the first rotor rear bearing mounting position, and a rear end orifice of the axial oil channel hole guides lubricating oil to a planet row in the planet row cavity.
The front side of the first motor rear bearing installation position is provided with a first motor rear oil baffle.
The bearing installation position comprises an output shaft bearing installation position and a second rotor rear bearing installation position arranged at the rear end of the second motor cavity, the output shaft bearing installation position is positioned at the rear side of the second rotor rear bearing installation position, the lubricating oil channel comprises a third lubricating oil channel, the third lubricating oil channel comprises a third lubricating oil channel first part for guiding lubricating oil to the output shaft bearing installation position, a channel outlet of the third lubricating oil channel first part is positioned at the rear side of the output shaft bearing installation position, an output shaft oil seal is arranged at the rear side of a channel outlet of the third lubricating oil channel first part on the device shell, and the third lubricating oil channel further comprises a third lubricating oil channel second part for conducting the output shaft bearing installation position and the second rotor rear bearing installation position.
The device shell is provided with a second motor rear oil baffle plate at the front side of the second rotor rear bearing installation position, and an oil drain hole for conducting the second rotor rear bearing installation position and the second motor cavity is formed in the second motor rear oil baffle plate, and the position of the oil drain hole is higher than the lowest position of the second rotor rear bearing installation position.
The bearing mounting position further comprises a second rotor front bearing mounting position located at the front end of the second motor cavity, the lubricating oil channel comprises a fourth lubricating oil channel, the fourth lubricating oil channel comprises a second baffle axial oil channel hole extending along the front-rear direction, the second baffle axial oil channel hole penetrates through the second baffle, a front end orifice of the second axial oil channel hole guides lubricating oil to a planet row in the planet row cavity, and a rear end orifice of the axial oil channel hole guides lubricating oil to the second rotor front bearing mounting position.
The rear side of the second motor front bearing installation position is provided with a second motor front oil baffle.
The beneficial effects of the invention are as follows: in the invention, the lubricating oil pumped by the lubricating oil pump is used for carrying out forced lubrication on the planetary row and the bearing at the position corresponding to the bearing mounting position, so that the problems existing in the prior art due to the use of lubricating grease are solved, meanwhile, the planetary row cavity and the motor cavity are communicated by the oil separation and guide channel, thus the lubricating oil in each cavity is communicated, the lubrication on the corresponding part to be lubricated can be realized by using one lubricating oil pump, and the structure of the product is simplified.
Drawings
FIG. 1 is a schematic structural diagram of a hybrid powertrain in one embodiment of a vehicle of the present invention;
FIG. 2 is a schematic illustration of the power plant of FIG. 1;
fig. 3 is a control logic diagram of the hybrid system of the present invention.
Detailed Description
Examples of the vehicle are shown in fig. 1 to 3: the vehicle comprises a vehicle frame and a power system arranged on the vehicle frame, wherein the power system in the embodiment is a series-parallel hybrid power system, the vehicle frame belongs to the prior art, and the structure of the vehicle frame is not described in detail. The series-parallel hybrid power system comprises an engine 35 and a power device, the power device comprises a device shell, the device shell is formed by a first motor shell 41, a planet row shell 42 and a second motor shell 43 which are arranged front and back, a first baffle 47 and a second baffle 48 are respectively formed on a rear end cover of the first motor shell and a front end cover of the second motor, the two baffles divide the device shell into a first motor cavity, a planet row cavity and a second motor cavity, a first motor 5 is arranged in the first motor cavity, a first planet row 45 and a second planet row 46 are arranged in the planet row cavity, and a second motor 14 is arranged in the second motor cavity. The power device further comprises an input shaft 1 and an output shaft 19 which are coaxially arranged, the front end of the input shaft 1 is connected with a flywheel of the engine through a clutch 40, the rear end of the input shaft 1 is connected with a planet carrier of a first planet row, a rotor 6 of a first motor is connected with a sun gear 30 of the first planet row, a gear ring 10 of the first planet row is connected with a planet carrier of a second planet row, a sun gear 26 of the second planet row is connected with a rotor 16 of the second motor, the output shaft 19 is connected with the planet carrier of the second planet row, and the output shaft is used as a power output of a series-parallel power system and is in transmission connection with an axle 44.
The both ends of first motor cavity are provided with first motor front bearing installation position and first motor rear bearing installation position respectively, be provided with first motor front bearing 3 on the first motor front bearing installation position, be provided with first motor rear bearing 8 on the first motor rear bearing installation position, rotor 6 of first motor passes through first motor front bearing 3, first motor rear bearing 8 sets up on first motor housing, the front end of first motor housing is provided with input shaft bearing installation position, be provided with input shaft bearing 2 on the input shaft bearing installation position, the front end of input shaft passes through input shaft bearing 2 and sets up on first motor housing. An inner rotating bearing 11 is arranged between the planet carrier of the first planet row and the planet carrier of the second planet row, and the planet carrier of the second planet row is connected with the planet row shell through an outer rotating bearing 12. The both ends of second motor cavity are provided with second motor front bearing installation position and second motor rear bearing installation position respectively, be provided with second motor front bearing 15 on the second motor front bearing installation position, be provided with second motor rear bearing 17 on the second motor rear bearing installation position, the rotor of second motor passes through second motor front bearing 15, second motor rear bearing 17 sets up on the second motor casing, the rear end of second motor casing is provided with output shaft bearing installation position, be provided with output shaft bearing 18 on the output shaft bearing installation position, the rear end of output shaft passes through output shaft bearing 18 and sets up on the second motor casing. The bearing mounting positions referred to in this embodiment refer to bearing mounting structures for mounting corresponding bearings, and in this embodiment, each bearing mounting position is a bearing mounting groove structure.
The baffle bottoms of two adjacent chambers are respectively provided with a baffle oil guide channel used for conducting two adjacent chambers, the baffle oil guide channel on the first baffle 47 is called a first baffle oil guide channel 31, the baffle oil guide channel on the second baffle 48 is called a second baffle oil guide channel 24, the planet row chamber is provided with an oil return groove lower than the first motor chamber and the second motor chamber, a lubricating oil pump 29 is arranged in the oil return groove, and a filter screen 28 is arranged at the oil inlet of the lubricating oil pump. The device housing is provided with a lubrication oil channel for guiding lubrication oil to the planet row and to the corresponding bearing mounting location, which lubrication oil channel in this embodiment is formed by an oil hole provided in the device housing, which is connected to the oil outlet 27 of the lubrication oil pump. The lubricant pump 29 is a gear pump with an input end as an input gear, and output teeth which are meshed with the input gear on the gear pump are arranged on the periphery of the gear ring 10 of the first planetary row, and the gear pump is driven to work through the first planetary row. The lubrication oil passage includes a first lubrication oil passage for guiding lubrication oil to the input shaft bearing mounting position and the first motor front bearing mounting position, a second lubrication oil passage for guiding lubrication oil to the first motor rear bearing mounting position and the first planet row, a third lubrication oil passage 21 for guiding lubrication oil to the output shaft bearing mounting position and the second motor rear bearing mounting position, and a fourth lubrication oil passage 25 for guiding lubrication oil to the second motor front bearing mounting position and the second planet row, the first lubrication oil passage, the third lubrication oil passage being in a symmetrical arrangement, the second lubrication oil passage, and the fourth lubrication oil passage being in a symmetrical arrangement, so that only the first lubrication oil passage and the second lubrication oil passage will be described in detail in this embodiment. The first lubrication oil passage includes a first lubrication oil passage first portion 33 for guiding lubrication oil to the input shaft bearing mounting position, a passage outlet of the first lubrication oil passage first portion 33 is located on a front side of the input shaft bearing 2, an input shaft oil seal 34 is provided on the device housing on a front side of the passage outlet of the first lubrication oil passage first portion, and the first lubrication oil passage further includes a first lubrication oil passage second portion 50 for communicating the input shaft bearing mounting position with the first rotor front bearing mounting position. The first motor shell is provided with a first motor front oil baffle 4 at the rear side of the first rotor front bearing 3, and the first motor front oil baffle is provided with an oil drain hole 51 for conducting the first rotor front bearing installation position and the first motor cavity, and the position of the oil drain hole 51 is higher than the lowest position of the first rotor front bearing installation position. The second lubrication oil passage 32 includes an axial oil passage hole 52 extending in the front-rear direction, which penetrates through the first baffle, the front end opening of the axial oil passage hole 52 guides the lubrication oil to the first rotor rear bearing mounting position, the rear end opening of the axial oil passage hole guides the lubrication oil to the first planet row, the first lubrication oil passage further includes an oil baffle hole connecting the axial oil passage hole and the lubrication oil pump, and the front side of the first motor rear bearing mounting position is provided with the first motor rear oil baffle 7.
Item 37 in FIG. 1 represents a vehicle control unit, item 39 represents a power source, and item 38 represents an integrated controller; item 36 represents an engine ECU. Item 9 in fig. 2 represents the planet wheels of the first row of planet wheels; item 13 represents the planet wheels of the second planet row; item 23 represents a second motor front oil baffle; item 22 represents a second motor rear oil baffle; item 20 represents the output shaft oil seal.
When the hybrid power system of the invention works, the gear ring of the first planet row drives the lubricating oil pump to work, lubricating oil in the oil return groove enters the lubricating oil pump after being filtered by the filter screen, and then the lubricating oil is pumped to a corresponding position to be lubricated by the lubricating oil channel, for example, the process of lubricating oil passing through the first lubricating oil channel is as follows: the first part of the lubricating oil is sent to the bearing installation position of the input shaft through the first lubricating oil duct to lubricate the bearing of the input shaft, then the bearing on the bearing installation position before the first motor is lubricated through the second part of the first lubricating oil duct, the front oil baffle plate of the first motor enables the bearing installation position before the first motor to always store a certain amount of lubricating oil, when the lubricating oil is not smooth in circulation or the oil pump does not work, the bearing can be fully lubricated, when the lubricating oil is higher than the oil drain hole, the lubricating oil flows into the second motor through the oil drain hole, and then flows back to the planet row cavity through the first baffle oil guide channel; the process of lubricating oil passing through the second lubricating oil duct is as follows: the lubricating oil flows into the axial oil passage holes on the first baffle through the oil baffle holes, and the axial oil passage holes guide the lubricating oil to the first motor rear bearing installation position and the first planet row respectively, so that the lubricating oil on corresponding positions is lubricated.
The hybrid power system of the invention can realize various working modes of the vehicle: an engine rapid start-stop mode, a pure electric driving mode, an engine independent driving and generating mode, an engine and second motor parallel driving mode and a braking energy recovery mode.
Quick start-stop mode of engine: an engine idle stop is one of the important measures for energy saving of a hybrid vehicle. In particular, buses, the engine is idling for a long time because of the frequent parking of the vehicle. The invention can realize the quick start of the engine by quickly dragging the engine through the first motor, and can realize the quick stop of the engine by dragging the engine through the first motor.
Pure electric operation mode: in this mode, the engine is stopped, and the second motor transmits torque to the rear-row planetary carrier through the rear-row sun gear, so that the torque is transmitted to the output shaft to drive the vehicle. The output torque of the output shaft is improved through the speed reduction and torque increase effects of the motor output torque from the sun gear to the planet carrier, so that the small-torque motor can be used for meeting the climbing performance of the vehicle.
Power generation mode: this mode is applicable to lower power supply SOC conditions. The battery needs to be charged when the power source SOC is low, and the engine is operated. The engine output torque is fully transferred to the first electric machine for generating electricity when the vehicle is stationary; when the vehicle runs, the engine increases power output to drive the first motor to generate power under the condition that the vehicle runs, and three-phase alternating current generated by the first motor is converted into direct current through the integrated controller to charge the power supply.
Engine individual drive and power generation modes: the mode is suitable for the medium-low speed uniform running condition of the vehicle. When the vehicle runs at a constant speed at a medium and low speed, the required power and torque of the whole vehicle are smaller, and at the moment, the engine works, and the engine output torque is respectively transmitted to the input shaft and the first motor due to the system connection mode. The torque transmitted to the output shaft is used for driving the vehicle to run at a constant speed, the torque transmitted to the first motor is used for driving the first motor to generate power, and the three-phase alternating current generated by the first motor is converted into direct current through the integrated controller and then charges the power supply.
Engine and second motor parallel drive mode: this mode is used for high-speed running and acceleration running conditions of the vehicle. When the vehicle runs at a high speed or accelerates, the required torque and the power of the whole vehicle are larger, the torque output by the engine alone cannot meet the requirement of the vehicle, so that the second motor needs to assist to drive the vehicle to run, and the engine and the second motor jointly output the torque to drive the vehicle to run.
Braking energy recovery mode: this mode is applicable to vehicle braking and coasting conditions. When the vehicle brakes or slides, the second motor is in a power generation working mode, and the kinetic energy of the vehicle is converted into electric energy to be stored in a power supply.
The control method logic of the hybrid power system is as shown in fig. 3:
wherein V is the speed of the vehicle, V Pure electric Switching speed limits for pure mode and hybrid mode, SOC L Low SOC lower limit value for vehicle power supply, SOC brk Power source SOC upper limit value, P for braking energy recovery ned For the whole vehicle to demand power, P L Switching power limits, P, for pure and hybrid modes Eng And outputting power for an engine high-efficiency area.
And when the brake pedal is depressed or the accelerator pedal is not depressed, the second step is carried out, and otherwise, the third step is carried out.
Step two, according to whether the SOC value of the whole vehicle power supply is lower than the upper limit value SOC of the brake power supply brk Judging whether the vehicle enters an electric braking feedback mode or not, and when the SOC of the power supply is less than or equal to SOC brk And if not, canceling the electric brake feedback.
Third, according to whether the SOC value of the whole vehicle power supply is lower than the SOC lower limit value of the power supply L Judging whether the vehicle enters a power generation mode or not, and when the SOC of the power supply is less than or equal to SOC L When the power generation module is inAnd (5) otherwise, entering a fourth step.
Fourth, according to the power P of the whole car Eng And the vehicle speed V judges whether the vehicle enters a pure electric operation mode or not, and when the vehicle needs power P ned Less than or equal to the upper limit value P of the pure electric driving power L And the vehicle speed V is the highest speed limit value V of the vehicle speed less than or equal to the pure electric mode Pure electric And if not, entering a fifth step.
Fifth step, according to the whole vehicle demand power P Eng Whether or not it is smaller than the output power P of the high-efficiency region of the engine Eng It is determined whether the vehicle enters an engine individual drive and power generation mode. When the whole vehicle requires power P Eng Less than or equal to the output power P of the high-efficiency region of the engine Eng And when the vehicle enters an engine independent driving and power generation mode, otherwise, the vehicle enters an engine second motor parallel driving mode.
The invention can realize the quick start and stop of the first motor, realize the quick start and stop of the engine, and solve the problem that the starting of the existing vehicle-mounted engine can not meet the frequent start and stop of the engine; the decoupling of the engine speed and the vehicle speed solves the problems that the vehicle speed and the engine speed of the existing hybrid vehicle are in a linear relation and the like, realizes the decoupling of the engine speed and the vehicle speed, can enable the engine to work at any torque under any vehicle speed, enables the engine to work in a high-efficiency area all the time, and improves the fuel economy of the vehicle; the climbing capacity of the vehicle is improved, and the torque of the output shaft is increased through the speed reduction and torque increase effects of the second planetary gear set, so that the climbing capacity of the vehicle is improved; the first motor and the second motor are oil motors, and the forced lubrication mode is used, so that the use of oil seals is reduced, splash lubrication resistance and oil seal resistance are reduced, the mechanical efficiency of a driving system is improved, and the forced lubrication improves the lubrication effect and the heat dissipation capacity of the system.
In other embodiments of the invention: the lubricating oil pump can also work without being driven by the planet row, for example, the lubricating oil pump can be an electric pump, and the electric power of the electric pump can be taken from a power supply; the lubricating oil pump can also be arranged in the first motor chamber or the second motor chamber; the first lubricating oil duct and the third lubricating oil duct also do not adopt symmetrical structures, and the second lubricating oil duct and the fourth lubricating oil duct also do not adopt symmetrical structures in the same way; the input shaft bearing and the output shaft bearing are not required to be arranged; when aiming at different types of power systems, the corresponding structure can also be changed, for example, when the power system is a serial hybrid power system, only one motor is arranged, and only one planetary row is arranged; when the power system is a pure electric power system, an engine and an input shaft can be omitted, and the power device comprises two planetary rows, two motors and an output shaft; the lubricating oil channel can also be formed by an oil pipe, or the lubricating oil channel is formed by an inner hole on the device shell and the oil pipe together; the lubricating oil pump and the planet row can also be connected through a toothed belt transmission.
Examples of the power plant are shown in fig. 1 to 3: the specific construction of the power plant is the same as that described in the above-described vehicle embodiments and will not be described in detail here.
Claims (17)
1. The power device comprises a device shell, wherein the device shell is separated into a motor cavity provided with a motor and a planet row cavity provided with a planet row by a baffle, and a bearing installation position for installing a corresponding bearing is further arranged on the device shell, and the power device is characterized in that: the bottom of the baffle is provided with a baffle oil guide channel which is communicated with the planetary row cavity and the motor cavity, the power device also comprises a lubricating oil pump with an oil inlet connected with the corresponding cavity and a lubricating oil channel which is connected with an oil outlet of the lubricating oil pump and is used for guiding lubricating oil to the planetary row and the corresponding bearing installation position, the lubricating oil channel is formed by an oil pipe and/or an oil hole arranged on a device shell, and the motor cavity is provided with one and is positioned at the front side of the planetary row cavity; the bearing installation position comprises a transmission shaft bearing installation position and a rotor front bearing installation position arranged at the front end of the motor cavity, the transmission shaft bearing installation position is positioned at the front side of the rotor front bearing installation position, the lubricating oil channel comprises a first lubricating oil channel, the first lubricating oil channel comprises a first lubricating oil channel first part used for guiding lubricating oil to the transmission shaft bearing installation position, a channel outlet of the first lubricating oil channel first part is positioned at the front side of the transmission shaft bearing installation position, a transmission shaft oil seal is arranged at the front side of a channel outlet of the first lubricating oil channel first part on the device shell, and the first lubricating oil channel further comprises a first lubricating oil channel second part used for conducting the transmission shaft bearing installation position and the rotor front bearing installation position.
2. The power plant according to claim 1, characterized in that: the rear side of the front bearing installation position of the rotor on the device shell is provided with a front motor oil baffle, and the front motor oil baffle is provided with an oil drain hole for conducting the front bearing installation position of the rotor and a motor cavity, and the position of the oil drain hole is higher than the lowest position of the front bearing installation position of the rotor.
3. A power plant according to claim 1 or 2, characterized in that: the bearing mounting position comprises a rotor rear bearing mounting position positioned at the rear end of the motor cavity, the lubricating oil channel comprises a second lubricating oil channel, the second lubricating oil channel comprises an axial oil channel hole extending along the front-rear direction, the axial oil channel hole penetrates through a baffle between the motor cavity and the planet row cavity, the front end orifice of the axial oil channel hole guides lubricating oil to the rotor rear bearing mounting position, and the rear end orifice of the axial oil channel hole guides lubricating oil to the planet row in the planet row cavity.
4. A power plant according to claim 3, characterized in that: the front side of the motor rear bearing installation position is provided with a motor rear oil baffle.
5. The power device comprises a device shell, wherein the device shell is separated into a motor cavity provided with a motor and a planet row cavity provided with a planet row by a baffle, and a bearing installation position for installing a corresponding bearing is further arranged on the device shell, and the power device is characterized in that: the motor cavity comprises a first motor cavity positioned at the front side of the planet row cavity and a second motor cavity positioned at the rear side of the planet row cavity, the baffle comprises a first baffle positioned between the first motor cavity and the planet row cavity and a second baffle positioned between the second motor cavity and the planet row cavity, the bearing mounting position comprises an input shaft bearing mounting position and a first rotor front bearing mounting position arranged at the front end of the first motor cavity, the input shaft bearing mounting position is positioned at the front side of the first rotor front bearing mounting position, the lubricating oil passage comprises a first lubricating oil passage, the first lubricating oil passage comprises a first lubricating oil passage part which guides lubricating oil to the input shaft bearing mounting position, a passage outlet of the first lubricating first part is positioned at the front side of the input shaft bearing mounting position, the first lubricating oil passage is positioned at the front side of the input shaft bearing mounting position, and the first lubricating oil passage is arranged at the front side of the first rotor front bearing mounting position.
6. The power plant according to claim 5, characterized in that: the planet row chamber is provided with an oil return groove which is lower than the first motor chamber and the second motor chamber, and the lubricating oil pump is arranged in the oil return groove.
7. The power plant according to claim 5, characterized in that: the device shell is provided with a first motor front oil baffle plate at the rear side of the first rotor front bearing installation position, and an oil drain hole for conducting the first rotor front bearing installation position and the first motor cavity is formed in the first motor front oil baffle plate, wherein the position of the oil drain hole is higher than the lowest position of the first rotor front bearing installation position.
8. The power device comprises a device shell, wherein the device shell is separated into a motor cavity provided with a motor and a planet row cavity provided with a planet row by a baffle, and a bearing installation position for installing a corresponding bearing is further arranged on the device shell, and the power device is characterized in that: the bottom of the baffle is provided with a baffle oil guide channel which is communicated with the planetary row chamber and the motor chamber, the power device also comprises a lubricating oil pump with an oil inlet connected with the corresponding chamber and a lubricating oil channel which is connected with an oil outlet of the lubricating oil pump and is used for guiding lubricating oil to the planetary row and the corresponding bearing installation position, the lubricating oil channel is formed by an oil pipe and/or an oil hole arranged on a device shell, the motor chamber comprises a first motor chamber positioned at the front side of the planetary row chamber and a second motor chamber positioned at the rear side of the planetary row chamber, and the baffle comprises a first baffle positioned between the first motor chamber and the planetary row chamber and a second baffle positioned between the second motor chamber and the planetary row chamber; the bearing mounting position further comprises a first rotor rear bearing mounting position located at the rear end of the first motor cavity, the lubricating oil channel comprises a second lubricating oil channel, the second lubricating oil channel comprises a first baffle axial oil channel hole extending along the front-rear direction, the first baffle axial oil channel hole penetrates through the first baffle, a front end orifice of the first axial oil channel hole guides lubricating oil to the first rotor rear bearing mounting position, and a rear end orifice of the axial oil channel hole guides lubricating oil to a planet row in the planet row cavity.
9. The power plant of claim 8, wherein: the front side of the first motor rear bearing installation position is provided with a first motor rear oil baffle.
10. The power device comprises a device shell, wherein the device shell is separated into a motor cavity provided with a motor and a planet row cavity provided with a planet row by a baffle, and a bearing installation position for installing a corresponding bearing is further arranged on the device shell, and the power device is characterized in that: the bottom of the baffle is provided with a baffle oil guide channel which is communicated with the planetary row chamber and the motor chamber, the power device also comprises a lubricating oil pump with an oil inlet connected with the corresponding chamber and a lubricating oil channel which is connected with an oil outlet of the lubricating oil pump and is used for guiding lubricating oil to the planetary row and the corresponding bearing installation position, the lubricating oil channel is formed by an oil pipe and/or an oil hole arranged on a device shell, the motor chamber comprises a first motor chamber positioned at the front side of the planetary row chamber and a second motor chamber positioned at the rear side of the planetary row chamber, and the baffle comprises a first baffle positioned between the first motor chamber and the planetary row chamber and a second baffle positioned between the second motor chamber and the planetary row chamber; the bearing installation position comprises an output shaft bearing installation position and a second rotor rear bearing installation position arranged at the rear end of the second motor cavity, the output shaft bearing installation position is positioned at the rear side of the second rotor rear bearing installation position, the lubricating oil channel comprises a third lubricating oil channel, the third lubricating oil channel comprises a third lubricating oil channel first part for guiding lubricating oil to the output shaft bearing installation position, a channel outlet of the third lubricating oil channel first part is positioned at the rear side of the output shaft bearing installation position, an output shaft oil seal is arranged at the rear side of a channel outlet of the third lubricating oil channel first part on the device shell, and the third lubricating oil channel further comprises a third lubricating oil channel second part for conducting the output shaft bearing installation position and the second rotor rear bearing installation position.
11. The power plant according to claim 10, characterized in that: the device shell is provided with a second motor rear oil baffle plate at the front side of the second rotor rear bearing installation position, and an oil drain hole for conducting the second rotor rear bearing installation position and the second motor cavity is formed in the second motor rear oil baffle plate, and the position of the oil drain hole is higher than the lowest position of the second rotor rear bearing installation position.
12. A power plant according to claim 10 or 11, characterized in that: the bearing mounting position further comprises a second rotor front bearing mounting position located at the front end of the second motor cavity, the lubricating oil channel comprises a fourth lubricating oil channel, the fourth lubricating oil channel comprises a second baffle axial oil channel hole extending along the front-rear direction, the second baffle axial oil channel hole penetrates through the second baffle, a front end orifice of the second axial oil channel hole guides lubricating oil to a planet row in the planet row cavity, and a rear end orifice of the axial oil channel hole guides lubricating oil to the second rotor front bearing mounting position.
13. The power plant according to claim 12, characterized in that: the rear side of the second motor front bearing installation position is provided with a second motor front oil baffle.
14. Vehicle, including the frame, its characterized in that: the power device of any one of claims 1-4 is arranged on the frame.
15. Vehicle, including the frame, its characterized in that: the power device according to any one of claims 5 to 7 is arranged on the frame.
16. Vehicle, including the frame, its characterized in that: the power device according to any one of claims 8 to 9 is arranged on the frame.
17. Vehicle, including the frame, its characterized in that: the power device according to any one of claims 10 to 13 is arranged on the frame.
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| CN110939690A (en) * | 2019-12-27 | 2020-03-31 | 中车戚墅堰机车车辆工艺研究所有限公司 | Vehicle dual-drive speed reducer and automobile |
| EP4438922A1 (en) | 2023-03-31 | 2024-10-02 | Volvo Truck Corporation | Powertrain assembly for an industrial vehicle |
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