CN204998322U - Power drive system that car was used and used car of this power drive system - Google Patents
Power drive system that car was used and used car of this power drive system Download PDFInfo
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- CN204998322U CN204998322U CN201520759731.4U CN201520759731U CN204998322U CN 204998322 U CN204998322 U CN 204998322U CN 201520759731 U CN201520759731 U CN 201520759731U CN 204998322 U CN204998322 U CN 204998322U
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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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Abstract
The utility model provides a power drive system that car was used and used car of this power drive system. The power drive system that the car was used includes: inverter unit for it becomes the alternating current to supply with the direct current electrical energy conversion who comes with the outside, the motor unit is used for coming from inverter unit's alternating current can be transformed into mechanical rotation, from output shaft output, the gearbox unit makes from the next rotation speed reduction back output of input shaft transmission. Motor unit, gearbox unit, inverter unit have relatively independent encapsulation casing respectively to be in the same place the mode of gearbox unit clamp in the centre, the mutual fixed connection of detachably along the axial of the input shaft of gearbox unit with motor unit and inverter unit. Inverter unit's encapsulation casing the ascending thickness of axle is minimum.
Description
Technical field
The present invention relates to the power drive system of automobile, particularly relating to electrical motor is the electronlmobil in Power output source or the compact power drive system of Hybrid Vehicle.
Background technology
Electronlmobil or hybrid vehicle are owing to make use of electric energy as propulsion source, compare traditional simple automobile that is propulsion source with gasoline or diesel oil etc., in reduced exhaust amount, economize energy etc., there is significant advantage, therefore in the current epoch promoting environmental protection, become just gradually development of automobile industry take advantage of a favourable situation institute to.
Above-mentioned be in the drive system of propulsion source with electric energy, based on viewpoints such as cost, structure complexity, maintenance convenience and work efficiencys, usually adopt alternating-current motor/AC motor (hereinafter referred to as electrical motor) as Power output source.But, as the closed-centre system (battery pack etc.) in electronlmobil or hybrid vehicle, what it exported is direct current (DC), therefore for driving alternating-current motor/AC motor, need between closed-centre system and alternating-current motor/AC motor, to configure inverter, so that converting direct-current power into alternating-current power is supplied electrical motor.Electrical motor is with the alternating current come from inverter supply for power supply carries out work, and its output shaft is connected to change speed gear box, is supplied to wheel after being slowed down by change speed gear box, makes it to rotate.
For ensureing the horsepower output of inverter and electrical motor, having to strengthen its oad, this increase that drive system entirety will be caused to take up room, and guaranteeing that the riding space of automobile forms contradiction as far as possible.Especially the rear wheel position of automobile, due to the space of the larger power drive system of Gong the configuration sized not having headstock machinery space such, therefore cannot for the such power drive system of the drive arrangements of trailing wheel, the principle of otherwise designed of having to drive system and layout, cause the increase of cost.
In patent documentation 1, disclose the compact power drive system of a kind of pressure-bearing type arrangement, inverter, change speed gear box, electrical motor along the input shaft direction straight line arrangement abreast of change speed gear box, thus are reduced the longitudinally height of power drive system by it, and the longitudinal direction can saving power drive system takes up room.
[patent documentation 1] US9030063 (B2)
Summary of the invention
But, in the invention that this patent documentation 1 is recorded, after inverter, change speed gear box, electrical motor laterally arrangement, the lateral dimension of power drive system becomes excessive, be set up the requirement that still cannot meet axletree installing space at space cloth, especially at the axletree of rear wheel that installing space is more limited, this power drive system cannot be adopted to carry out back-wheel drive, therefore need driving or the power-transmission system of a set of back-wheel drive of development and Design separately, cause the increase of the costs such as design, production, maintenance.
In addition, in the invention that patent documentation 1 is recorded, this power drive system is integrated into one, be encapsulated in a housing, this will cause power drive system when test or later period maintenance are rolled off the production line in production, cannot carry out respectively testing or keeping in repair, change by unit for inverter, change speed gear box, electrical motor, cause the increasing of test and maintenance cost.
The present invention researches and develops in view of above-mentioned prior art Problems existing, and one of its object is to provide a kind of power drive system that further shorten the automobile of lateral dimension.In addition, another object of the present invention is to provide one both compact conformations, be convenient to again the power drive system of the automobile tested and keep in repair.In addition, another object of the present invention is to provide a kind of power drive system that improve the automobile of the insulation protection of the electrical connection of inverter unit and motor unit.It should be noted that at this, above-mentioned each object is only the illustration of technique effect of the present invention, not requires that the present invention must realize above-mentioned whole object simultaneously.
The power drive system of the automobile of the present invention's scheme comprises: inverter unit, converts alternating current to for direct current energy outside supply come; Motor unit, for the AC energy from described inverter unit is transformed into mechanical rotation, exports from output shaft; Transmission unit, exports after the rotation come is slowed down from input shaft transmission.Described motor unit, described transmission unit, described inverter unit have relatively independent encapsulating housing respectively, and in described motor unit and the described inverter unit mode axially described transmission unit is clipped in the middle along the described input shaft of described transmission unit, be removably mutually permanently connected together.The described thickness axially of the described encapsulating housing of described inverter unit is minimum.
Can comprise one or more inverter circuit board in described inverter unit, described inverter circuit board is approximately perpendicular to described axial mode with its circuit card face and is configured.
The described encapsulating housing of described inverter unit can be the box shape that the projection of shape of the outline of each circuit card of bottom shape and its inside matches.
Dividing plate can be provided with in described transmission unit, to gear transmission cavity be divided in transmission unit and be used for the dry chamber of the electrical interconnection inserting described motor unit and described inverter unit, described dry chamber can comprise described motor unit is connected with the electrical interconnection of described inverter unit dock region.
Described electrical interconnection can organize connection lead more.Can be provided with collets in described docking region, described collets can with making the insulation grid of isolating that insulate between each group of connection lead of described electrical interconnection.
Described electrical interconnection can be busbar.The busbar of described motor unit can dock region stacked on top of one another described with the busbar of described inverter unit, and is interconnected with detouchable connection mode.
Can be the described output shaft of described motor unit be the hollow shaft with female splines, the described input shaft of described transmission unit be stretch out from the encapsulating housing of described transmission unit, front end has the axle of male splines.The described input shaft of described transmission unit inserts in the described output shaft of described motor unit, male splines described in it coordinates with the described female splines of the described output shaft of described motor unit and connects, and the described input shaft of described transmission unit is rotated with the rotation of the described output shaft of described motor unit.
Another program of the present invention is a kind of automobile, and it adopts the power drive system of automobile as above as f-w-d system.
Described automobile can also adopt the power drive system of same another set of above-mentioned automobile as rear wheel drive system.
Accompanying drawing explanation
Fig. 1 schematically shows the power drive system of the embodiment of the present invention being configured in electronlmobil and the figure of related system thereof.
Fig. 2 is the figure of the power drive system representing embodiment of the present invention, and wherein (a) of Fig. 2 is the front view of the outward appearance after schematically showing power drive system assembling; (b) of Fig. 2 is the longitudinal sectional view of the power drive system after schematically showing assembling.
Fig. 3 be the structure of the collets schematically shown in embodiment of the present invention and the figure of installation site, Fig. 3 (a) and (b) respectively for illustration of the transmission unit shown in Fig. 2 (a) inverter side housing and be assemblied in the left view of collets and the birds-eye view in its docking region.
Fig. 4 is the figure of the mounting means for illustration of the inverter internal circuit pcb board disclosed in patent documentation 1 as a comparison case.
Fig. 5 is the exploded view of assembly relation schematically showing the motor unit of embodiment of the present invention, transmission unit, inverter unit.
Detailed description of the invention
Embodiments of the present invention will be illustrated based on accompanying drawing below, in the drawings and in which, identical label has been marked to identical or equivalent inscape, and suitably the description thereof will be omitted.
Fig. 1 schematically shows to be configured in the power drive system of the present invention of electronlmobil and the figure of related system thereof.In this Fig. 1, for electronlmobil, indicate the configuration of power drive system of the present invention and related system thereof, eliminate the expression of other system needed for electronlmobil.As shown in Figure 1, the electronlmobil of embodiment of the present invention comprises power drive system 10, power control system 20, energy storage system 30, front-wheel semiaxis 40, trailing wheel semiaxis 50.Wherein, power drive system 10 comprises inverter unit 100, transmission unit 200, and as the motor unit 300 of alternating-current motor/AC motor, inverter unit 100 accepts the direct current energy from energy storage system 30 (can be the battery pack such as vehicle-mounted energy storage type power supply or fuel cell power source), under the power of power control system 20 controls, converting direct-current power into alternating-current power is supplied to motor unit 300, rotor in motor unit 300 rotates under the effect in the magnetic field that alternating current produces, thus converting electric energy is become mechanical rotation power, this turning effort is exported to transmission unit 200 by output shaft, transmission unit 200 makes this rotation slow down by the cooperation of each gear mechanism of its inside, and after the adjustment of differential gear, export semiaxis (the front-wheel semiaxis 40 of wheel to, trailing wheel semiaxis 50), drive vehicle wheel rotation.
Fig. 2 is the figure of the power drive system representing embodiment of the present invention, and wherein (a) of Fig. 2 is the front view of the outward appearance after schematically showing power drive system assembling; (b) of Fig. 2 is the longitudinal sectional view of the power drive system after schematically showing assembling.The architectural feature of the power drive system of present embodiment is illustrated below based on Fig. 2.
As shown in (a) and (b) of Fig. 2, motor unit 300, transmission unit 200, inverter unit 100 have separately independently encapsulating housing, form relatively independent unit respectively.Motor unit 300, transmission unit 200, inverter unit 100 are laterally arranged point-blank along the direction (being also the direction of the output shaft 303 of motor unit 300, hereinafter referred to as axis) of the input shaft 202 of transmission unit 200 simultaneously.The flange connection surface 309 of the output shaft side of motor unit 300 is connected by bolt removably with the flange connection surface of the motor side housing 210 of transmission unit 200, and the flange connection surface of the inverter side housing 211 of transmission unit 200 is connected by bolt removably with the flange connection surface 106 of inverter unit 100.
It should be noted that, in the present embodiment, be bolted between motor unit 300, transmission unit 200, inverter unit 100 three and realize removable mechanical connection, but also can adopt other removable machinery or the on-mechanical connection modes such as buckle connection, chain connection, as required, joint face may not be flange face.Thus, using motor unit 300, transmission unit 200, inverter unit 100 as an integrally easy disassembly, therefore test and the maintenance, repair of each unit can be convenient to.
The main inside structure that motor unit 300, transmission unit 200, inverter unit 100 are respective is schematically illustrated in (b) of Fig. 2.In addition, the cooling system of each unit and the diagram of concrete electronic circuit is eliminated in fig. 2.
(motor unit)
As shown in (b) of Fig. 2, motor unit 300 comprises stator 301 relatively-stationary with housing, be energized based on stator 301 after the magnetic field that produces and rotate rotor 302, with rotor 301 relative to the fixing and output shaft 303 rotated integratedly, the two groups of bearings 304 and 305 rotatably support output shaft 303 respectively in the both end sides of output shaft 303 and the busbar 307 for powering to motor unit 300 be electrically connected with stator 301.Wherein, output shaft 303 is hollow shaft configuration, is provided with the female splines 306 that the male splines for the input shaft with transmission unit 200 matches in the inner side of hollow shaft.
(transmission unit)
As shown in (b) of Fig. 2, the cavity that motor side housing 210 and the inverter side housing 211 of transmission unit 200 surround is divided into the dry chamber 201 of top and the airtight gear transmission cavity 213 of Figure below in figure by the dividing plate 212 of inside.Not filling lubricating oil in dry chamber 201, is formed with the busbar perforation of the busbar 307 for inserting motor unit 300 at the end face by motor unit 300 side in dry chamber 201.In addition, above the dividing plate 212 of inverter side housing 211, be formed as the recess configurations of upper opening in figure, what become the busbar 307 of motor unit 300 and the busbar 105 of inverter unit 100 docks region 214.The boring a hole with the busbar of the busbar 105 be formed for inserting inverter unit 100 on the flange connection surface that inverter unit 100 connects, in the region corresponding with docking region 214 of inverter side housing 211 of transmission unit 200.In addition, in docking region 214, internal fixtion has collets 209, the busbar 307 in docking region 214 is inserted into and busbar about 105 overlaps on collets 209 via the perforation of each busbar, by with bolt through busbar 307 and the respective overlapping place of busbar 105 establish for the bolt hole that docks and to carry out spiral shell solid, the busbar 307 of motor unit 300 is electrically connected with the busbar 105 of inverter unit 100, and is relatively fixed on the inverter side housing 211 of transmission unit 200.About the concrete structure of collets 209, will describe in detail below.
The input shaft 202 of the male splines matched with the female splines of the output shaft with motor unit 300 in the front end of externally stretching out from the motor side housing 210 of transmission unit 200 is provided with at the gear transmission cavity 213 of transmission unit 200, rotatably support two groups of bearings 215 and 216 of input shaft 202, be meshed with input shaft 202 and the miniature gears 203 rotated along with the rotation of input shaft 202, be meshed with miniature gears 203 and the big gear wheel 204 rotating along with miniature gears 203 and rotate, the differential gear set 205 matched with big gear wheel 204, as output axle shaft 215a and 215b of the output of differential gear set 205, and rotatably support bearing 207a and 207b of output axle shaft 215a and 215b respectively.In gear transmission cavity 213, for lubricating the rotation of each gear cluster and being filled with lubricating oil, be provided with oil sealing component 216 for preventing oil leak at the position that input shaft 202 stretches out from the motor side housing 210 of transmission unit 200.
To lubricating oil be filled in the gear transmission cavity of transmission unit 200 described above, therefore for preventing the effect of the oil sealing component 216 of oil leak with regard to outbalance.Input shaft according to transmission unit 200 be female splines hollow shaft, make the output shaft of electrical motor insert the structure of transmission unit 200 splined, then oil sealing component 216 may in the test in later stage or maintenance process because of the repeatedly insertion of the splined output shaft of electrical motor, to extract etc. and suffer damage or shorten the life-span.And in motor unit 300, do not fill lubrication wet goods, without the need to oil sealing component, therefore by as in the present embodiment adopt make the input shaft 202 of transmission unit 200 for stretch out the band male splines of change speed gear box axle, make the output shaft of motor unit 300 be the structure of hollow axle with inner spline, can reduce makes the oil sealing component of transmission unit 200 suffer damage or short-life situation that contracts in the test or maintenance process in later stage, makes oil sealing component 216 keep producing level when rolling off the production line with coordinating of input shaft 202.
In addition, in the present embodiment, for ease of illustrating, describing transmission unit 200 for the fixed teeth of single speed than change speed gear box, but can certainly multi speed transmission etc. be adopted.
(collets)
Fig. 3 schematically shows the structure of collets 209 and the figure of installation site thereof.(a) and (b) of Fig. 3 respectively for illustration of the transmission unit 200 shown in Fig. 2 (a) inverter side housing 211 and be assemblied in the left view of collets 209 and the birds-eye view in its docking region 214.
As shown in (a) of Fig. 3, above the dividing plate 212 of the inverter side housing 211 of transmission unit 200, what the busbar 105 of the busbar 307 and inverter unit 100 that are formed with electric motor unit 300 passed windows 217.That is, these 217 inverter side housings 211 running through transmission unit 200 vertically of windowing.By this window 217 and the recess space that surrounds of dividing plate 212 form the busbar 307 of motor unit 300 and the busbar 105 of inverter unit 100 dock region 214.In this docking region 214, be provided with collets 209, collets 209 are bolted and are fixed on inverter side housing 211.Collets 209 can adopt various inorganic, organic or mix insulation material, as long as have the insulating power of design.
As shown in (a) of Fig. 3, collets 209 are provided with insulation grid 218 that extend along busbar direction of routing, projection upward.In the present embodiment, motor unit 300 and inverter unit 100 are respectively equipped with three busbars be made up of copper or other conductive material and connect, therefore collets 209 are provided with four insulation grids 218 altogether, form the docking space for busbar 307 and the overlapping docking of busbar 105 between adjacent insulation grid 218.
As shown in (b) of Fig. 3, be provided with the bolt hole 219 for the solid busbar 307 of spiral shell and busbar 105 at each docking space place.When actual assembling, make corresponding busbar 307 and busbar 105 overlapping up and down in the docking space of the correspondence of collets, and the bolt hole of each busbar docks space bolt hole with this is aimed in the vertical direction coaxially, with bolt through the bolt hole being fixed at docking space after the busbar 307 aimed at, busbar 105, make three relatively fixing.Or the bolt hole of collets 209 also can be made to be through hole, and bolt blind hole is set in the relevant position of inverter side housing 211, after the bolt hole in the busbar 307 bolt being passed aimed at, busbar 105 and docking space, be fixed in the corresponding bolt blind hole of inverter side housing 211, make busbar 307, busbar 105, collets 209, inverter side housing 211 4 relatively fixing.
In the technology disclosed in patent documentation 1, also use busbar between its inverter and electrical motor to be electrically connected, each busbar adopt 12 centimeter length, 2 centimetres wide, the conductive material of 0.5 cm thick magnitude makes, to ensure its rigidity.Unlike this, in the present embodiment, owing to being also provided with collets 209 at the busbar 307 of motor unit 300 with the region of docking of the busbar 105 of inverter unit 100, the insulation grid 218 of collets 209 can play a role as making the insulating component of each three groups of busbars extended in parallel, and the docking space simultaneously formed between each insulation grid 218 also plays a role as the supporting member of carrying busbar.Therefore, compared with the technology disclosed in patent documentation 1, the present invention can reduce the rigid requirements of busbar, saving material cost, simultaneously effectively can also preventing from the bolt for docking busbar in Long-Time Service process when causing loosening because to jolt etc. being short-circuited between busbar, causing the situation of power drive system major failure.
In addition, in the above description, fixing for each busbar and collets and/or gear box casing, is illustrated for bolt connection, this connection mode is not limited to bolt and connects, and can also be machinery or the on-mechanical connection mode of other dismantled and assembled modes such as buckle connection, chain connection.Thus, easily by each parts dismounting, the test of each parts, maintenance, repair can be convenient to.
(inverter unit)
The following describes the inverter unit of present embodiment and the arrangement mode of internal circuit board thereof.In the present invention, inverter is AC/DC (DC/AC) electrical energy transformer, and the direct supply for being supplied by energy storage system 30 is transformed to the source of AC needed for driving motor unit 300 (alternating-current motor/AC motor).In the present invention, inverter unit 300 can be the High Performance DC/AC electrical energy transformer of active inverter, passive inverter and multiple various combination.
Before inverter circuit pcb board in the housing of inverter unit 100 that present embodiment is described and the arrangement mode of relevant components and parts thereof, first utilize the arrangement mode of inverter internal circuit pcb board in Fig. 4 brief description patent documentation 1 as a comparison case and relevant components and parts thereof.Fig. 4 corresponds to the accompanying drawing 8 of patent documentation 1, illustrates the mounting means of inverter internal circuit pcb board.In the diagram, dotted line frame 400 schematically shows the shell of its inverter, and label 401 represents the mounting base of inverter circuit pcb board, and label 402 represents the mounting interface of inverter circuit pcb board, and label 403 represents inverter circuit pcb board.It should be noted that, in the technology disclosed in patent documentation 1, inverter circuit has three pieces of pcb boards, and wherein one piece of pcb board 403 is only shown in Fig. 4.Three pieces of pcb boards 403 are inserted in mounting interface 402 set on the mounting base that becomes one with change speed gear box respectively, and three pieces of pcb boards be that triangular shape is arranged.As shown in Figure 4, inverter circuit pcb board 403 in the inverter of patent documentation 1 assembles along the direction (hereinafter referred to as axis) parallel with transmission input shaft, after the suit inverter shell of outside, the axial length of inverter must be greater than the axial length of pcb board 403, cause the axial length of inverter long, and then cause the axial length of power drive system entirety long.In addition, the arrangement in triangular shape of its three pieces of pcb boards 403, and inverter shell 400 is drum, the wasted space between pcb board 403 and shell 400 is excessive, has both caused the waste in space, is unfavorable for again the structure of the safety methods such as the damping of pcb board.
As shown in (b) of Fig. 2, mainly comprising two-layer inverter circuit pcb board 101,102 in the inverter unit of embodiment of the present invention, it being separately installed with the various electronic devices and components for realizing inverter function.Circuit due to inverter is formed and the not inventive point place of the present invention such as DC/AC shift theory, can adopt various existing inverter circuit principle and formation, therefore omit its detailed description at this.Two-layer pcb board 101,102 is arranged along the direction substantially vertical with the input shaft direction (hereinafter referred to as axis) of transmission unit 200, near between the pcb board 101 of flange connection surface 106 and the housing of inverter unit 100 of inverter unit 100 and interfixed by the many fixed legs extended vertically 103 between each pcb board, thus, each pcb board is fixed in stacked mode within the shell of inverter unit 100.Certainly, also can not be connected to each other between each pcb board fixing, but be individually fixed in the housing of inverter unit 100.
The housing of inverter unit 100 is box shape that the projection of shape of the outline of each pcb board of bottom shape and its inside matches, in the present embodiment, because the shape of each pcb board 101,102 is quadrangle, therefore the shell of inverter unit 100 is the casing with rectangular shape.
The axial width of the inverter circuit pcb board 101,102 after being assembled together with overlapped way is less than length and the width of pcb board itself, therefore by each pcb board in such arrangement inverter unit 100 and relevant components and parts thereof, the axial length of inverter unit 100 can be shortened, and then shorten the axial length of power drive system entirety.In addition; shell due to inverter unit 100 is the box shape that the projection of shape of the outline of each pcb board of bottom shape and its inside matches; therefore each pcb board and shell assemble after inner space degree of utilization higher, and be convenient to build actv. circuit card safety method.
In addition, the example of inverter unit 100 built with two pieces of inverter circuit pcb boards is described in description of the present embodiment at above, but the quantity of this pcb board is obviously not limited thereto, also one deck pcb board can be only had, or have the stacked of more multi-layered pcb board, as long as ensure in the thickness of all directions of the encapsulating housing of inverter unit 100, described thickness is axially minimum.
Fig. 5 is the exploded view of assembly relation schematically showing the motor unit 300 of present embodiment, transmission unit 200, inverter unit 100.As shown in Figure 5, motor unit 300, transmission unit 200, inverter unit 100 are along axis (in figure shown in the single dotted broken line) arrangement of the input shaft 202 of transmission unit 200, the input shaft 202 of transmission unit 200 from stretch into after the input shaft through hole of motor side housing 210 stretches out motor unit 300 as the output shaft 303 of hollow shaft, its male splines coordinates with the female splines in the output shaft 303 of motor unit 300 and connects and can rotate integratedly with output shaft 303.Simultaneously, the busbar 307 of motor unit 300 stretches in the dry chamber of transmission unit 200, after windowing above the dividing plate of the inverter side housing 211 of transmission unit 200 is stretched out, under the directional tagging of the insulation grid of collets 209, enter busbar docking region 214.In addition, the flange connection surface almost parallel with the plane at its internal inverters circuit pcb board place of inverter unit 100 is fixed at the inverter side housing 211 of transmission unit 200 along the axis of the input shaft 202 of transmission unit 200, the busbar 105 of inverter unit 100 extend into docking region 214, with busbar 307 stacked on top of one another of motor unit 300 from the windowing of inverter side housing 211 of transmission unit 200 simultaneously.Finally, between motor unit 300, transmission unit 200, inverter unit 100 respectively with the detouchable such as such as bolt connection machinery or on-mechanical connection mode relatively fixing, form power drive system.
Compared with the pressure-bearing type compact power drive system of the prior aries such as patent documentation 1, the axial length of compact power drive system of the present invention is further compressed, thus can not only be configured at the front axle of vehicle, can also be configured at the rear axle of vehicle as drive system.As an example, based on the axial overall length of the compact power drive system actual product of patent documentation 1 about more than 880cm, the requirements of installation space of the vehicle rear axle that assembly space is extremely restricted cannot be met, and compact power drive system of the present invention is owing to have compressed the axial length of inverter unit at least further, therefore can the axial length of power drive system entirety be controlled at about 700cm, thus the power drive system designed equally both can be arranged on automobile front-axle place, be arranged on again vehicle rear axle place, simply to design the four wheel drive demand realizing vehicle with structure.
In addition, because transmission unit of the present invention is provided with the dry chamber of the electrical interconnection for interspersed motor unit and inverter unit, can the connection lead of power drive system be imbedded within housing, thus electrical interconnection can be avoided to be subject to the impact of the lubrication wet goods of outside muddy water or inside, power drive system entirety can be made simultaneously more succinct, decrease the interference of outside cabling, ensure that insulativity.
In addition, due to the present invention motor unit and inverter unit electrical interconnection dock the collets that region is also provided with tape insulation grid, therefore the insulativity between each electrical interconnection can be increased.Simultaneously, due to the buffer action of the grid that insulate, electrical interconnection without the need to the technology as patent documentation 1 for guaranteeing the busbar that rigidity adopts thickness thicker, the busbar that thinner thickness, rigidity are lower can be selected, or select electric conductivity better but the conductive material that self rigidity is lower, add the degree of freedom of design and material selection.Or, also traditional flexible wire harness that has can be adopted to be used as electrical interconnection, but the drive system of inverter and electrical motor is connected compared to traditional employing wire harness, the arrangement mode of power drive system of the present invention can make rattail shorter, thus significantly simplifies system, significantly expendable weight, reduces current loss between inverter and electrical motor.In addition, in present embodiment exemplified with inverter by three busbars for motor provides the mode of three plase alternating current, but busbar quantity is not limited thereto, and also can arrange two or busbar more than three according to the type etc. of motor.
In addition, the present invention is not defined in above-mentioned embodiment and variation, can in the scope not departing from technological thought, inscape is out of shape and specialize.Can by by appropriately combined for the multiple inscapes disclosed in above-mentioned embodiment and variation and form various invention.In addition, also several inscape can be deleted from all inscapes shown in above-mentioned embodiment and variation.
Claims (9)
1. a power drive system for automobile, is characterized in that, comprising:
Inverter unit, converts alternating current to for direct current energy outside supply come,
Motor unit, for the AC energy from described inverter unit is transformed into mechanical rotation, exports from output shaft, and
Transmission unit, exports after the rotation come is slowed down from input shaft transmission;
Wherein, described motor unit, described transmission unit, described inverter unit have relatively independent encapsulating housing respectively, and in described motor unit and the described inverter unit mode axially described transmission unit is clipped in the middle along the described input shaft of described transmission unit, be removably mutually permanently connected together;
The described thickness axially of the described encapsulating housing of described inverter unit is minimum.
2. the power drive system of automobile as claimed in claim 1, is characterized in that,
Comprise one or more layers inverter circuit board in described inverter unit, described inverter circuit board is approximately perpendicular to described axial mode with its circuit card face and is configured.
3. the power drive system of automobile as claimed in claim 2, is characterized in that,
The described encapsulating housing of described inverter unit is the box shape that the projection of shape of the outline of each circuit card of profile and its inside matches.
4. the power drive system of the automobile as described in any one of claims 1 to 3, is characterized in that,
Be provided with dividing plate in described transmission unit, will gear transmission cavity be divided in transmission unit and be used for the dry chamber of the electrical interconnection inserting described motor unit and described inverter unit;
Described dry chamber comprise described motor unit is connected with the electrical interconnection of described inverter unit dock region.
5. the power drive system of automobile as claimed in claim 4, is characterized in that,
Described electrical interconnection organizes connection lead more;
In described docking region, be provided with collets, described collets are with making the insulation grid of isolating that insulate between each group of connection lead of described electrical interconnection.
6. the power drive system of automobile as claimed in claim 5, is characterized in that,
Described electrical interconnection is busbar;
The busbar of described motor unit docks region stacked on top of one another with the busbar of described inverter unit described, and is interconnected with detouchable connection mode.
7. the power drive system of automobile as claimed in claim 1, is characterized in that,
The described output shaft of described motor unit is the hollow shaft with female splines;
The described input shaft of described transmission unit be stretch out from the encapsulating housing of described transmission unit, front end has the axle of male splines;
The described input shaft of described transmission unit inserts in the described output shaft of described motor unit, male splines described in it coordinates with the described female splines of the described output shaft of described motor unit and connects, and the described input shaft of described transmission unit is rotated with the rotation of the described output shaft of described motor unit.
8. an automobile, adopts the power drive system of the automobile as described in any one of claim 1 to 7 as f-w-d system.
9. automobile as claimed in claim 8, is characterized in that,
Also adopt the power drive system of the automobile as described in any one of claim 1 to 7 as rear wheel drive system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520759731.4U CN204998322U (en) | 2015-09-28 | 2015-09-28 | Power drive system that car was used and used car of this power drive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520759731.4U CN204998322U (en) | 2015-09-28 | 2015-09-28 | Power drive system that car was used and used car of this power drive system |
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| Publication Number | Publication Date |
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| CN204998322U true CN204998322U (en) | 2016-01-27 |
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| CN201520759731.4U Active CN204998322U (en) | 2015-09-28 | 2015-09-28 | Power drive system that car was used and used car of this power drive system |
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|---|---|
| CN (1) | CN204998322U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105216598A (en) * | 2015-09-28 | 2016-01-06 | 蔚来汽车有限公司 | A kind of power drive system of automobile and employ the automobile of this power drive system |
| JP2020040572A (en) * | 2018-09-12 | 2020-03-19 | 本田技研工業株式会社 | vehicle |
| WO2024061450A1 (en) * | 2022-09-20 | 2024-03-28 | Gkn Automotive Limited | Housing assembly and electric drive with such a housing assembly |
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2015
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105216598A (en) * | 2015-09-28 | 2016-01-06 | 蔚来汽车有限公司 | A kind of power drive system of automobile and employ the automobile of this power drive system |
| US10988013B2 (en) | 2015-09-28 | 2021-04-27 | Nio (Anhui) Holding Co., Ltd. | Electric drive system for motor vehicle and motor vehicle using same |
| JP2020040572A (en) * | 2018-09-12 | 2020-03-19 | 本田技研工業株式会社 | vehicle |
| CN110893755A (en) * | 2018-09-12 | 2020-03-20 | 本田技研工业株式会社 | Vehicle with a steering wheel |
| US11451109B2 (en) | 2018-09-12 | 2022-09-20 | Honda Motor Co., Ltd. | Vehicle |
| CN110893755B (en) * | 2018-09-12 | 2023-03-10 | 本田技研工业株式会社 | Vehicle with a steering wheel |
| WO2024061450A1 (en) * | 2022-09-20 | 2024-03-28 | Gkn Automotive Limited | Housing assembly and electric drive with such a housing assembly |
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Effective date of registration: 20201028 Address after: Susong Road West and Shenzhen Road North, Hefei Economic and Technological Development Zone, Anhui Province Patentee after: Weilai (Anhui) Holding Co., Ltd Address before: Room 502, Bank of America building, Cecil Harcourt Road, central, Hongkong, China, 12 Patentee before: NIO NEXTEV Ltd. |
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