CN114670587A - Integrated electric drive axle - Google Patents
Integrated electric drive axle Download PDFInfo
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- CN114670587A CN114670587A CN202210412155.0A CN202210412155A CN114670587A CN 114670587 A CN114670587 A CN 114670587A CN 202210412155 A CN202210412155 A CN 202210412155A CN 114670587 A CN114670587 A CN 114670587A
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- drive axle
- planetary gear
- brake
- electric drive
- bridge body
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- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 63
- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 239000000725 suspension Substances 0.000 claims abstract description 33
- 230000001419 dependent effect Effects 0.000 claims description 8
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 abstract description 11
- 238000009434 installation Methods 0.000 abstract description 7
- 230000000712 assembly Effects 0.000 abstract description 4
- 238000000429 assembly Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/121—Power-transmission from drive shaft to hub
- B60B35/122—Power-transmission from drive shaft to hub using gearings
- B60B35/125—Power-transmission from drive shaft to hub using gearings of the planetary type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing
- B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
- B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The integrated electric drive axle comprises two drive motors, two planetary gear reducers and two brakes which are arranged in a cylindrical axle body in a centralized manner, wherein two sides of the axle body are respectively connected with two power transmission connecting assemblies. The invention connects a planetary gear reducer and a brake through each driving motor, thus form two independent differential power systems, under the same situation of total output power, can greatly reduce the volume, lower the height compared with existing electric drive axle, and can realize the smooth steering of the vehicle under the state of avoiding the differential mechanism, not only better meet the height and volume requirements of the electric vehicle with low floor and height limit requirement to the chassis to the electric drive axle distributed by the electric vehicle, meanwhile, can meet the installation and use requirements of the electric vehicle equipped with independent and non-independent suspensions, the applicability is extremely strong, and the design is novel and unique, the structure is compact and simple, therefore, the invention has great popularization and application value.
Description
Technical Field
The invention relates to a drive axle, in particular to an integrated electric drive axle, and belongs to the technical field of production and manufacturing of integrated electric drive axles.
Background
The drive axle is an axle that transmits driving force provided by a vehicle-mounted internal combustion engine or an electric motor to drive wheels, realizes speed reduction and torque increase, and changes the power transmission direction, wherein the drive axle transmitting the power of the electric motor is also called an electric drive axle and is one of main components of an electric automobile.
The electric drive axle is a connecting bridge between the frame and the wheels, and is required to bear the weight of the automobile, the vertical load between the ground and the frame, the braking force, the lateral force, the bending moment caused by the lateral force, and the like, and simultaneously bear the weight of various components forming the electric drive axle, so that the electric drive axle must firstly have the capacity of meeting the corresponding bearing requirement, and simultaneously, the electric drive axle also needs to meet the requirement that the frame and the ground can keep a certain height.
The electric drive axle generally comprises a drive motor, a speed reducer, a differential mechanism, an axle housing, a half axle and other components, wherein the drive motor and the speed reducer form a power source, and the differential mechanism is used for realizing differential motion of wheels on two sides and enabling the wheels on the two sides to steer at different rotating speeds, so that the driving safety of a vehicle is ensured.
In the prior art, most of electric drive axles adopt a power source which is formed by matching a drive motor and a speed reducer and enables a vehicle to move, and in order to ensure the moving power of the vehicle, the electric drive axles are generally required to be provided with the drive motor and the speed reducer with higher power;
in addition, because a driving structure formed by matching a single motor and a single reducer cannot independently control the driving force and the rotating speed of the wheels on one side, the electric drive axle in the prior art can realize the differential motion of the wheels on two sides only by configuring a differential mechanism, and the smooth steering of the vehicle is ensured; due to the existence of the differential, the existing electric drive axle assembly is various, large in size and complex in structure, so that the electric drive axle assembly is more difficult to arrange on a vehicle with limited chassis height and is not suitable for the configuration requirement of a low-floor vehicle;
meanwhile, just because the driving structure formed by matching the single motor and the single speed reducer cannot independently control the driving force and the rotating speed of the wheel on one side, the electric drive axle in the prior art cannot be used as a power source of the wheel of a vehicle with two wheels independently suspended on the two wheels without matching of a differential.
Because the electric drive axle in the prior art has the defects, the application of the electric drive axle is greatly limited, and the requirements of society on electric automobiles are difficult to meet.
Disclosure of Invention
In order to overcome the defects of the prior art, the embodiment of the invention provides an integrated electric drive axle, and aims to:
the integrated electric drive axle provided by the invention meets the requirements of an electric automobile with low floor and height limit requirement on a chassis on the height and the volume of a power distribution drive axle of the electric automobile, wherein the integrated electric drive axle can meet the requirements of configuring an electric vehicle with an independent suspension and configuring an electric vehicle with a non-independent suspension, and simultaneously further achieves the aims of simple and compact integral structure, small occupied space and strong applicability of the electric drive axle.
In order to achieve the above object, the present invention provides the following technical solutions.
An integrated electric transaxle for driving a wheel mounted to a suspension of an electric vehicle, comprising:
one bridge body, two driving motor, two planetary gear reducer, two brakers and two sets of power transmission coupling assembling, wherein:
the bridge body is a cylinder component, the cylindrical bridge body is horizontally arranged on a frame or an auxiliary frame of the electric automobile, and each driving motor, the planetary gear reducer and the brake are respectively arranged inside a cylinder of the bridge body; and is
The two driving motors are arranged side by side and are jointly located in the middle of a cylinder of the bridge body, the two planetary gear reducers are respectively arranged on two sides of the two driving motors and are respectively connected with one adjacent driving motor, a brake and one set of power transmission connecting assembly are sequentially arranged on the other side of each planetary gear reducer, a power output shaft of each planetary gear reducer respectively penetrates through the brake on one adjacent side of each planetary gear reducer and is connected with one end of the set of power transmission connecting assembly on the adjacent side of the brake, and the other end of each power transmission connecting assembly is respectively used for connecting and driving wheels mounted on a suspension of the electric automobile.
Further:
the driving motor comprises a stator and a rotor, wherein the stator is installed on the inner wall of the cylinder body of the bridge body, and the rotor is connected with the planetary gear reducer.
Further:
the planetary gear reducer further comprises an inner gear ring, a sun gear, a planetary gear and a planet carrier, wherein:
the inner gear ring and the cylinder body part of the bridge body are combined into one, the inner teeth of the inner gear ring are distributed on the inner wall of the cylinder body of the bridge body as the inner gear ring part of the planetary gear reducer, the sun gear is connected with the rotor of the driving motor, the plurality of planetary gears are distributed between the inner gear ring and the sun gear, one side of the planet carrier is connected on each planetary gear, and the other side of the planet carrier is connected with the power output shaft of the planetary gear reducer.
Further:
the brake includes a brake housing and a brake pad, wherein:
the brake shell and the cylinder part of the bridge body are combined into a whole, the brake disc is installed on the inner wall of the cylinder body of the bridge body as the brake shell part, and the brake disc is used for braking the power output shaft.
Optionally:
the power transmission connecting assembly comprises a transmission shaft, a driving shaft and two universal joints, wherein:
one end of the transmission shaft is connected with a power output shaft of the planetary gear reducer through one universal joint, the other end of the transmission shaft is connected with one end of the driving shaft through the other universal joint, and the other end of the driving shaft is used for being connected with and driving wheels mounted on an independent suspension of the electric automobile.
Optionally:
the power transmission connecting assembly is an external sleeve of the power output shaft;
and one end of each of the two external sleeves is respectively communicated with two ends of the cylinder of the bridge body, the other end of each of the external sleeves is respectively connected with the dependent suspension of the electric automobile, and the other end of each of the power output shafts respectively penetrates out of the other end of the external sleeve sleeved by each of the external sleeves for connecting and driving wheels mounted on the dependent suspension of the electric automobile.
Further, the outer sleeve and the bridge body are an integral component.
Further, the integrated electric drive axle further comprises:
a support member;
the supporting members are respectively arranged on two sides of each driving motor and one side or two sides of each brake, the supporting members arranged on two sides of each driving motor are used for supporting and stabilizing a rotating shaft of the driving motor, and the supporting members arranged on one side or two sides of each brake are used for supporting and stabilizing the power output shaft passing through the brake.
Further:
the supporting component comprises a supporting seat and a bearing or a shaft sleeve, the supporting seat is arranged on the cylindrical wall of the bridge body, and the bearing or the shaft sleeve is arranged on the supporting seat.
Further, the bridge body and the frame or the auxiliary frame are integrated members.
Compared with the prior art, the invention has the beneficial effects and obvious progress that:
1) the invention is characterized in that two driving motors, two planetary gear reducers and two brake driving motors are arranged in a cylindrical bridge body in a centralized manner, and two power transmission connecting assemblies are respectively connected to two sides of the bridge body, so that an integrated electric drive axle capable of driving wheels arranged on a suspension of an electric automobile is formed, wherein:
the two driving motors are arranged side by side and are jointly positioned in the middle of a cylinder body of the bridge body, the two planetary gear reducers are respectively arranged at two sides of the two driving motors and are respectively connected with the adjacent driving motors, the other side of each planetary gear reducer is sequentially provided with a brake and a set of power transmission connecting components, the power output shaft of each planetary gear reducer respectively penetrates through the brake at the adjacent side of each planetary gear reducer and is connected with one end of the set of power transmission connecting components at the adjacent side of the brake, and the other end of each power transmission connecting component is respectively used for connecting and driving wheels arranged on a suspension of the electric automobile;
2) it can be seen that, because the integrated electric drive axle provided by the invention uses two driving motors and two planetary gear reducers, under the condition of the same total output power, compared with the existing electric drive axle adopting one driving motor and one reducer, the integrated electric drive axle can greatly reduce the volume and the height of the electric drive axle, thereby meeting the requirements of the electric automobile with low floor and height limit requirements on a chassis on the height and the volume of the electric drive axle;
3) the integrated electric drive axle provided by the invention has the advantages that two driving motors, two planetary gear reducers and two brakes are adopted to form two independent power systems respectively, and each power system can independently operate and provide different rotating speeds and torques, so that the two power systems can mutually form a differential operation system, and the smooth steering of a vehicle can be realized without mounting a differential mechanism as in the prior art, so that the differential mechanism can be omitted, the integrated electric drive axle provided by the invention is simpler and more compact in structure and occupies smaller space, and the requirements of a low floor and an electric vehicle with a chassis height limit requirement on the height and the volume of the electric drive axle can be better met;
4) the integrated electric drive axle provided by the invention can realize the function of a differential mechanism through the combination of the drive motor, the planetary gear reducer and the brake, so that the mounting and use requirements of an electric vehicle provided with a non-independent suspension can be met, the mounting and use requirements of the electric vehicle provided with an independent suspension can be met, the integrated electric drive axle not only can be applied to a double-drive electric vehicle, but also can be applied to four-drive or even multi-wheel drive electric vehicles, each grounding wheel can be independently driven and controls the rotating speed, and the multi-mode traveling of the vehicle is realized, and the integrated electric drive axle has strong applicability;
5) in summary, the integrated electric drive axle provided by the invention has the advantages of unique and novel design, compact and simple structure, simple and convenient manufacture and installation, high reliability and applicability, provides a new idea and method for the development of electric automobiles, and has outstanding substantive characteristics and remarkable progress compared with the prior art, thereby having great popularization and application values.
Drawings
To more clearly illustrate the technical solution of the present invention, the drawings required for the embodiment of the present invention will be briefly described below.
It should be apparent that the drawings in the following description are only drawings of some embodiments of the invention, and that other drawings can be obtained by those skilled in the art without inventive exercise, and the other drawings also belong to the drawings required by the embodiments of the invention.
Fig. 1 is a schematic structural diagram of an integrated electric drive axle of an electric vehicle with an independent suspension according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an integrated electric drive axle suitable for an electric vehicle with dependent suspension according to an embodiment of the present invention.
In the figure:
10-a wheel;
100-a bridge;
200-drive motor, 210-stator, 220-rotor;
300-planetary gear reducer, 310-power output shaft, 320-internal gear ring, 330-sun gear, 340-planetary gear, 350-planet carrier;
400-brake, 410-brake pad;
511-drive shaft, 512-drive shaft, 513-universal joint, 520-outer sleeve;
600-a support member.
Detailed Description
In order to make the objects, technical solutions, advantages and significant progress of the embodiments of the present invention clearer and more obvious, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings provided in the embodiments of the present invention, it is obvious that all the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
It should be noted that the terms "first", "second", "third" (if present), etc. in the description and claims of the present invention and the accompanying drawings of the embodiments of the present invention are only used for distinguishing different objects, and are not used for describing a specific order;
furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to the listed steps or elements, but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It is to be understood that:
in the description of the embodiments of the present invention, the terms "upper", "lower", "top", "bottom", and other indicative orientations or positions are only used for describing the orientations or positional relationships based on the embodiments of the present invention and are used for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the devices or elements described must have a specific orientation, a specific orientation configuration and operation, and therefore, the present invention should not be construed as being limited thereto.
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be understood broadly, and for example, may be fixedly connected, detachably connected, movably connected, or integrated; the term "a" or "an" refers to a compound that can be directly connected or indirectly connected through an intermediate, and can be used in combination with or without other elements, unless otherwise specifically limited, and the specific meaning of the term in the present invention can be understood by those skilled in the art according to specific situations.
It should also be noted that:
the following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.
The technical means of the present invention will be described in detail below with specific examples.
Examples
The present embodiment provides an integrated electric transaxle for driving a wheel mounted on a suspension of an electric vehicle.
Fig. 1 is a schematic structural diagram of an integrated electric drive axle of an electric vehicle with independent suspension according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of an integrated electric drive axle of an electric vehicle with dependent suspension according to an embodiment of the present invention:
an integrated electric transaxle comprising:
one bridge body 100, two driving motors 200, two planetary gear reducers 300, two brakes 400 and two sets of power transmission connecting components, wherein:
the axle 100 is a cylindrical member, the cylindrical axle 100 is horizontally disposed on a frame (not shown) or a sub-frame (not shown) of an electric vehicle (not shown), and each driving motor 200, planetary gear reducer 300 and brake 400 are disposed inside the cylindrical member of the axle 100; and is
The two driving motors 200 are arranged side by side and located at the middle of the cylinder of the axle 100, the two planetary gear reducers 300 are respectively arranged at two sides of the two driving motors 200, and each of the two planetary gear reducers 300 is respectively connected with an adjacent driving motor 200, the other side of each planetary gear reducer 300 is sequentially provided with a brake 400 and a set of power transmission connecting components, the power output shaft 310 of each planetary gear reducer 300 respectively penetrates through the brake 400 at one side adjacent to each planetary gear reducer and is connected with one end of the set of power transmission connecting components at one side adjacent to the brake 400, and the other end of each power transmission connecting component is respectively used for connecting and driving the wheel 10 mounted on the suspension (not shown in the figure) of the electric vehicle (not shown in the figure).
From the above description, it can be seen that:
firstly, in the embodiment, two driving motors, two planetary gear reducers and two brake driving motors are intensively arranged in a cylindrical bridge body, and two power transmission connecting assemblies are respectively connected to two sides of the bridge body, so that an integrated electric drive axle capable of driving wheels mounted on a suspension of an electric automobile is formed, and the centralization and integration of all parts of the electric drive axle are realized;
secondly, the integrated electric drive axle provided by the embodiment uses two driving motors and two planetary gear reducers, so that under the condition of the same total output power, compared with the existing electric drive axle adopting one driving motor and one reducer, the integrated electric drive axle can greatly reduce the volume and the height of the electric drive axle, thereby meeting the requirements of the electric automobile with low floor and height limit requirements on a chassis on the height and the volume of the electric drive axle distributed by the electric automobile;
furthermore, the integrated electric drive axle provided by the embodiment adopts two driving motors to respectively form two independent power systems with two planetary gear reducers and two brakes, and each power system can independently operate and provide different rotating speeds and torques, so that a differential operation system of the electric drive axle is formed, and the smooth steering of a vehicle can be realized without mounting a differential mechanism in the electric drive axle in the prior art, thereby avoiding the differential mechanism, enabling the structure of the integrated electric drive axle provided by the embodiment to be simpler, more compact and less space occupied, and better meeting the requirements of a low floor and the height and volume of the electric drive axle of an electric vehicle with the height limit requirement on a chassis;
in addition, because the integrated electric drive axle that this embodiment provided, through driving motor, planetary gear reducer and the combination of stopper realized the function of differential mechanism, consequently, not only can satisfy the installation use needs of the electric vehicle who has configured non-independent suspension, and can satisfy the installation use needs of the electric vehicle who has configured independent suspension, not only can be applied to two-wheel drive electric motor car, and can be applied to four-wheel drive or even on the electric vehicle of many rounds of drives, let every ground connection wheel can both drive alone and control its rotational speed, thereby realize that the multiple mode of vehicle is marchd, therefore, the suitability is extremely strong.
Further, as can be seen from fig. 1 and 2, in the present embodiment:
the driving motor 200 includes a stator 210 and a rotor 220, wherein the stator 210 is mounted on an inner wall of a cylinder of the bridge 100, and the rotor 220 is connected to the planetary gear reducer 300.
It can be seen that, this is a non-conventional design, and the driving motor of the integrated electric drive axle provided in this embodiment does not have a conventional motor housing, and the motor housing and the axle body of the integrated electric drive axle are combined into one, so that not only is the structure simplified, but also the overall weight of the integrated electric drive axle can be reduced, and the height of the drive axle is reduced, thereby better satisfying the requirements of the electric vehicle with low floor and height limitation on the chassis on the height and volume of the electric drive axle distributed by the electric vehicle.
Further, as can be seen from fig. 1 and fig. 2, in this embodiment:
the planetary gear reducer 300 further includes an inner ring gear 320, a sun gear 330, planet gears 340, and a planet carrier 350, wherein:
the inner ring gear 320 is integrated with the cylinder of the bridge 100, the inner teeth of the inner ring gear 320 are distributed on the inner wall of the cylinder of the bridge 100 as the inner ring gear 320 of the planetary gear reducer 300, the sun gear 330 is connected with the rotor 220 of the driving motor 200, the plurality of planet gears 340 are distributed between the inner ring gear 320 and the sun gear 330, one side of the planet carrier 350 is connected with each planet gear 340, and the other side of the planet carrier 350 is connected with the power output shaft 310 of the planetary gear reducer 300.
It can be seen that, compared with the existing planetary gear reducer, the planetary gear reducer in this embodiment does not have an internal gear ring, but combines the internal gear ring and the axle body of the integrated electric drive axle into one, and the internal teeth on the internal gear ring are distributed on the inner wall of the cylinder body of the axle body, so that the structure is simplified, the overall weight of the integrated electric drive axle can be reduced, and the height of the drive axle is reduced, thereby better meeting the requirements of the electric automobile with low floor and height limitation on the chassis on the height and volume of the electric drive axle.
As can be further seen from fig. 1 and fig. 2, in the present embodiment:
brake 400 includes a brake housing and a brake pad 410, wherein:
the brake housing is integrated with the cylinder part of the bridge 100, and the brake disc 410 is mounted on the inner wall of the cylinder part of the bridge 100 as the brake housing part, and the brake disc 410 is used for braking the power output shaft 310.
Obviously, this is also an unusual design, the brake housing and the axle body are combined into one, and the brake piece is installed on the inner wall of the cylinder body of the axle body as the brake housing part, so that not only the structure is simplified, but also the overall weight of the integrated electric drive axle can be reduced, and the height of the drive axle is reduced, thereby better meeting the requirements of the electric automobile with low floor and height limitation on the chassis on the height and volume of the electric drive axle distributed by the electric automobile.
As an alternative embodiment, it can be seen from fig. 1:
the power transmission connection assembly comprises a drive shaft 511, a drive shaft 512 and two universal joints 513, wherein:
one end of the propeller shaft 511 is connected to the power take-off shaft 310 of the planetary gear reducer 300 through a universal joint 513, the other end of the propeller shaft 511 is connected to one end of the drive shaft 512 through another universal joint 513, and the other end of the drive shaft 512 is used for connecting and driving the wheel 10 mounted on an independent suspension (not shown) of the electric vehicle (not shown).
Obviously, through the power transmission connection assembly comprising the transmission shaft, the driving shaft and the universal joint, the main structural component of the integrated electric drive axle provided by the embodiment can be installed and connected on the electric automobile provided with the independent suspension to drive the wheels, and the installation is simple and convenient.
As an alternative embodiment, it can be seen from fig. 2:
the power transmission coupling assembly is the outer sleeve 520 of the power take-off shaft 310;
one end of each of the two outer sleeves 520 is respectively communicated with two ends of the cylinder of the axle 100, the other end of each of the outer sleeves 520 is respectively connected with a dependent suspension (not shown) of an electric vehicle (not shown), and the other end of each of the power output shafts 310 respectively penetrates out of the other end of the outer sleeve 520 sleeved with the power output shaft for connecting and driving the wheel 10 mounted on the dependent suspension (not shown) of the electric vehicle (not shown).
The external sleeve is used as a power transmission connecting assembly, so that the main structural component of the integrated electric drive axle provided by the embodiment can be installed and connected on the driving wheel of the electric automobile provided with the non-independent suspension, and the structure is simple and convenient.
Further, as can be seen from fig. 2, in the present embodiment, the outer sleeve 520 is an integral component with the axle body 100, so that the structure of the integrated electric drive axle provided in the present embodiment will become more compact.
As an optimization, as shown in fig. 1 and fig. 2, it can be further seen that the integrated electric transaxle provided in this embodiment further includes:
a support member 600;
the support members 600 are respectively provided at both sides of each driving motor 200 and one side or both sides of each brake 400, the support members 600 provided at both sides of each driving motor 200 are used to support the rotation shaft of the driving motor 200 stably, and the support members 600 provided at one side or both sides of each brake 400 are used to support the power take-off shaft 310 stably passing through the brake 400.
As an alternative embodiment:
the support member 600 includes a support seat provided on the cylindrical wall of the bridge body 100, and a bearing or a bushing mounted on the support seat.
Obviously, the supporting member is arranged in the integrated electric drive axle, so that the working stability of main components such as the driving motor and the planetary gear reducer can be further improved, and the reliability and the safety performance of the integrated electric drive axle are improved.
As an alternative embodiment, the present embodiment provides an integrated electric transaxle having an axle body 100 integrated with a frame (not shown) or a subframe (not shown).
The integrated component is designed by the bridge body and the frame or the auxiliary frame, so that the whole weight can be further reduced, and the structure can be further simplified, so that the electric automobile integrated with the electric drive axle and the frame or the auxiliary frame is lighter and more attractive, has more modern sense and high-tech sense, and is more popular.
In summary, it can be seen that:
the embodiment of the invention realizes the centralization and integration of all parts of the electric drive axle by intensively arranging the two driving motors, the two planetary gear reducers and the two brake driving motors in the cylindrical axle body and respectively connecting the two power transmission connecting assemblies at the two sides of the axle body, thereby forming the integrated electric drive axle which can be used for driving wheels arranged on the suspension of the electric automobile;
the integrated electric drive axle provided by the invention uses two drive motors and two planetary gear reducers, and under the condition of the same total output power, compared with the existing electric drive axle, the integrated electric drive axle can greatly reduce the volume and the height, and meets the requirements of an electric automobile with a low floor and a height limit requirement on a chassis on the height and the volume of the power distribution drive axle of the electric automobile;
secondly, the integrated electric drive axle provided by the invention forms two independent differential power systems through two drive motors, two planetary gear reducers and two brakes, and realizes smooth steering of the vehicle under the state of avoiding a differential mechanism, so that the structure of the electric drive axle can become simpler and more compact and occupies smaller space, the height and volume requirements of an electric vehicle with a low floor and a height limit requirement on a chassis on a power distribution drive axle of the electric vehicle are better met, meanwhile, the installation and use requirements of the electric vehicle provided with independent and non-independent suspensions can be met, and the applicability is extremely strong;
in a word, the integrated electric drive axle provided by the invention has the advantages of unique, bold and novel design idea, compact and simple product structure, simple and convenient manufacture and installation, strong reliability and applicability, has outstanding substantive characteristics and remarkable progress compared with the prior art, and provides a new idea and method for the development of electric automobiles, so that the integrated electric drive axle has great popularization and application values.
During the description of the above description:
the description of the terms "present embodiment," "as shown at … …," "further improved technical solution," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention, and the schematic representation of the terms in this specification is not necessarily intended to refer to the same embodiment or example, and the particular feature, structure, material, or characteristic described, etc., may be combined or coupled in any suitable manner in any one or more embodiments or examples;
furthermore, those of ordinary skill in the art may combine or combine features of different embodiments or examples and features of different embodiments or examples described in this specification without undue conflict.
Finally, it should be noted that:
although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made on the technical solutions described in the foregoing embodiments, or some or all of the technical features of the embodiments can be equivalently replaced, and the corresponding technical solutions do not depart from the technical solutions of the embodiments of the present invention.
Claims (10)
1. An integrated electric transaxle for driving a wheel mounted on a suspension of an electric vehicle, comprising:
one bridge body, two driving motor, two planetary gear reducer, two brakers and two sets of power transmission coupling assembling, wherein:
the bridge body is a cylinder component, the cylindrical bridge body is horizontally arranged on a frame or an auxiliary frame of the electric automobile, and each driving motor, the planetary gear reducer and the brake are respectively arranged inside a cylinder of the bridge body; and is
The two driving motors are arranged side by side and are jointly located in the middle of a cylinder of the bridge body, the two planetary gear reducers are respectively arranged on two sides of the two driving motors and are respectively connected with one adjacent driving motor, a brake and one set of power transmission connecting assembly are sequentially arranged on the other side of each planetary gear reducer, a power output shaft of each planetary gear reducer respectively penetrates through the brake on one adjacent side of each planetary gear reducer and is connected with one end of the set of power transmission connecting assembly on the adjacent side of the brake, and the other end of each power transmission connecting assembly is respectively used for connecting and driving wheels mounted on a suspension of the electric automobile.
2. The integrated electric drive axle of claim 1, wherein:
the driving motor comprises a stator and a rotor, wherein the stator is installed on the inner wall of the cylinder body of the bridge body, and the rotor is connected with the planetary gear reducer.
3. The integrated electric drive axle of claim 1, wherein:
the planetary gear reducer further comprises an inner gear ring, a sun gear, a planetary gear and a planet carrier, wherein:
the inner gear ring and the cylinder body part of the bridge body are combined into one, the inner teeth of the inner gear ring are distributed on the inner wall of the cylinder body of the bridge body as the inner gear ring part of the planetary gear reducer, the sun gear is connected with the rotor of the driving motor, the plurality of planetary gears are distributed between the inner gear ring and the sun gear, one side of the planet carrier is connected on each planetary gear, and the other side of the planet carrier is connected with the power output shaft of the planetary gear reducer.
4. The integrated electric drive axle of claim 1, wherein:
the brake includes a brake housing and a brake pad, wherein:
the brake shell and the cylinder part of the bridge body are combined into a whole, the brake disc is installed on the inner wall of the cylinder body of the bridge body as the brake shell part, and the brake disc is used for braking the power output shaft.
5. The integrated electric drive axle of claim 1, wherein:
the power transmission connecting assembly comprises a transmission shaft, a driving shaft and two universal joints, wherein:
one end of the transmission shaft is connected with a power output shaft of the planetary gear reducer through one universal joint, the other end of the transmission shaft is connected with one end of the driving shaft through the other universal joint, and the other end of the driving shaft is used for being connected with and driving wheels mounted on an independent suspension of the electric automobile.
6. The integrated electric drive axle of claim 1, wherein:
the power transmission connecting assembly is an external sleeve of the power output shaft;
and one end of each of the two external sleeves is respectively communicated with two ends of the cylinder of the bridge body, the other end of each of the external sleeves is respectively connected with the dependent suspension of the electric automobile, and the other end of each of the power output shafts respectively penetrates out of the other end of the external sleeve sleeved by each of the external sleeves for connecting and driving wheels mounted on the dependent suspension of the electric automobile.
7. The integrated electric drive axle of claim 6, wherein: the outer sleeve and the bridge body are an integral component.
8. The integrated electrical transaxle of claim 1 further comprising:
a support member;
the supporting members are respectively arranged on two sides of each driving motor and one side or two sides of each brake, the supporting members arranged on two sides of each driving motor are used for supporting and stabilizing a rotating shaft of the driving motor, and the supporting members arranged on one side or two sides of each brake are used for supporting and stabilizing the power output shaft passing through the brake.
9. The integrated electric drive axle of claim 8, wherein:
the supporting component comprises a supporting seat and a bearing or a shaft sleeve, the supporting seat is arranged on the cylindrical wall of the bridge body, and the bearing or the shaft sleeve is arranged on the supporting seat.
10. The integrated electric drive axle of claim 1, wherein: the bridge body and the frame or the auxiliary frame are integrated members.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210412155.0A CN114670587A (en) | 2022-04-19 | 2022-04-19 | Integrated electric drive axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210412155.0A CN114670587A (en) | 2022-04-19 | 2022-04-19 | Integrated electric drive axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114670587A true CN114670587A (en) | 2022-06-28 |
Family
ID=82077313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210412155.0A Pending CN114670587A (en) | 2022-04-19 | 2022-04-19 | Integrated electric drive axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114670587A (en) |
-
2022
- 2022-04-19 CN CN202210412155.0A patent/CN114670587A/en active Pending
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