CN2840491Y - Electric vehicle hub electric machine differential driving device - Google Patents
Electric vehicle hub electric machine differential driving device Download PDFInfo
- Publication number
- CN2840491Y CN2840491Y CN 200520035635 CN200520035635U CN2840491Y CN 2840491 Y CN2840491 Y CN 2840491Y CN 200520035635 CN200520035635 CN 200520035635 CN 200520035635 U CN200520035635 U CN 200520035635U CN 2840491 Y CN2840491 Y CN 2840491Y
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- wheel hub
- assembly
- differential
- hub
- motor
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Abstract
The utility model discloses an electric vehicle hub motor differential driving device, which comprises a hub for wheels, a motor, a cross-bridge assembly, a differential mechanism assembly and a brake assembly. The utility model can design the electric vehicle hub motor into single machine driving from two machine driving; two driving wheels has speed difference when running; one differential mechanism assembly is arranged between the two wheels; thereby, the differential speed problem of the two wheels can be solved. The utility model can increase the effective power of a hub motor of a four-wheel electric vehicle and increase the mileage running mileage of an electric vehicle; the utility model can also enlarge a dynamic force area and increase a dynamic force performance.
Description
Technical field
The utility model relates to a kind of driving device for electric vehicle, relates in particular to a kind of wheel hub electric motor of electric vehicle differential drive device.
Background technology
At present, the drive unit of four-wheel electric motor car has two kinds, a kind ofly be that mechanical speed change drives, this type of drive is to give gearbox by motor with transmission of power, pass to driving wheel by differential mechanism after the bending moment speed change, another kind of electric motor car is direct driving, and this mode is that motor is installed in the hub for vehicle wheel, be called wheel hub motor, with the direct drive wheels of wheel hub motor.The former driving system structure complexity, quality weigh, efficient is low.Latter's driving system structure is simple, light weight, relative efficiency are higher, is the direction of electric motor car development.Yet wheel hub motor drives and has had two defectives: the one, and two motors must be worked simultaneously when electric motor car travelled, and copper loss during bi-motor work and iron loss influence the distance travelled of electric motor car than single motor height; The 2nd, what wheel hub motor disposed is the motor of constant power, and the rated power of two motors is set by peak load, and electric motor car is in the actual travel process, the utilization rate of rated power is less than 10%, just there is high-power configuration in this, and the problem that small-power is used causes the electric motor car overall efficiency low.
Summary of the invention
The purpose of this utility model provides a kind of effective power that can improve the four-wheel electric motor car wheel hub motor, increases the distance travelled of electric motor car, and enlarges its power zone, improves the wheel hub electric motor of electric vehicle differential drive device of power performance.
The purpose of this utility model is achieved in that
A kind of wheel hub electric motor of electric vehicle differential drive device comprises hub for vehicle wheel, motor, cross-bridges assembly, differential assembly, brake assembly, it is characterized in that: described hub for vehicle wheel is connected as a single entity through differential assembly by semiaxis, semiaxis dish; Described motor is the wheel hub motor of two non-constant powers; Described wheel hub motor rotor is arranged in the interior circle of hub for vehicle wheel circle, and stator is fixed on the cross-bridges assembly axle sleeve; Described brake assembly is arranged in the differential assembly U shell body.
Described hub for vehicle wheel comprises the tire groove of the wheel hub plate by the bearing location that is enclosed within on the axle sleeve, the hub circle that is positioned at wheel hub plate one side, hub circle outer end.
Described cross-bridges assembly comprises cross-bridges, the differential mechanism fixed mount that is positioned at cross-bridges one side that is connected with the hub spindle cover, the damping spring seat that is arranged at wheel hub axle sleeve one end.
Described differential assembly comprises the half-axile sleeve that is connected with semiaxis, the differential casing that is connected with half-axile sleeve and semiaxis tooth, the planet tooth that is connected with the semiaxis tooth.
Described brake assembly comprises the brake disc, brake strip, the friction plate return spring that is connected with brake strip in the differential assembly U shell body that are connected with differential casing, is arranged on the hydraulic cylinder between two brake strips.
The utility model has the advantages that:
Energy consumption height when the utility model uses the double wheel hub motor-driven at four-wheel electric motor car, little and the lower problem of overall efficiency of power adjustment scope, proposed four-wheel electric motor car double wheel hub motor-driven is designed to single-wheel hub motor-driven, single-wheel hub motor-driven than the motor-driven advantage of double wheel hub is: under the prerequisite of equal-wattage, iron loss and copper loss reduce 60% than double wheel hub motor during single-wheel hub machine operation, overall efficiency improves 10%, if two powers of motor are designed to two levels time, motor has formed three power-section, it is the low-power district, big power-section and synthesized-power district, when travelling, electric motor car can use different power-section according to different road conditions, both reached purpose of energy saving, improved the power performance of electric motor car again, simultaneously, during two wheel hub motor alternations, solved the heat dissipation problem of motor effectively.
Description of drawings
Fig. 1 is the utility model structural representation
Embodiment
A kind of wheel hub electric motor of electric vehicle differential drive device comprises hub for vehicle wheel, motor, cross-bridges assembly 6, differential assembly, brake assembly, and hub for vehicle wheel is connected as a single entity through differential assembly by semiaxis 15, semiaxis dish 14; Two-semiaxle 15 passes from wheel hub axle sleeve 18 holes, is connected with differential assembly, and the semiaxis dish is fixed on the wheel hub plate; Motor is the wheel hub motor of two non-constant powers; Wheel hub motor rotor 10 is arranged in the hub for vehicle wheel circle 8 interior circles, and stator 11 is fixed on cross-bridges assembly 6 axle sleeves 18; Cross-bridges assembly 6 is made of axle sleeve 18 and cross-bridges 1; Brake assembly is arranged in the differential assembly U shell body.Hub for vehicle wheel comprises the tire groove 21 of the wheel hub plate 9 by the bearing location that is enclosed within on the axle sleeve 18, the hub circle 8 that is positioned at wheel hub plate 9 one sides, hub circle 8 outer ends.Described cross-bridges assembly 6 comprises cross-bridges 1, the differential mechanism fixed mount 2 that is positioned at cross-bridges 1 one sides that is connected with axle sleeve 18, the damping spring seat 16 that is arranged at axle sleeve 18 1 ends.Differential assembly comprises the half-axile sleeve 20 that is connected with semiaxis 15, the differential casing 3 that is connected with half-axile sleeve 20 and semiaxis tooth 5, the planet tooth 4 that is connected with semiaxis tooth 5.Brake assembly comprises brake disc 25, brake strip 22, the friction plate return spring 23 that is connected with brake strip 22 in the differential assembly U shell body that is connected with differential casing 3, the hydraulic cylinder 24 that is arranged on 22 of two brake strips.
Cross-bridges assembly 6 one ends are connected with vehicle frame through hanger pin 7, and the spring base 16 of the other end is connected with vehicle frame through spring 19.Wheel hub plate 9 is enclosed within on the axle sleeve 18, and by cone bearing 12 location, wheel hub 8,9,12 and rotor 10 are a rotary integral, around axle sleeve 18 rotations.Cone bearing 12 sides are provided with securing member 17, and motor stator 11 is fixed on above the axle sleeve 18, and the rotor 10 formation wheel hub motors with corresponding also are provided with dust cap 26 on the wheel hub motor.
Described brake fluid cylinder pressure 24 is fixed on the cross-bridges 1, and two counter motion pistons are arranged in the cylinder, and two piston rods are connected with friction plate 22 respectively, and return spring 23 is a tension spring, and two ends are connected on the friction plate 22.
Described two semiaxis dishes 14 are fixed on above the wheel hub plate 9 by standing screw 13, and semiaxis 15, semiaxis dish 14 and vehicle wheel hub are a rotary integral.
Below in conjunction with accompanying drawing the utility model is done detailed elaboration.
As shown in Figure 1: wheel hub electric motor of electric vehicle differential drive device described in the utility model, be by hub for vehicle wheel, wheel hub motor, cross-bridges assembly 6, differential assembly, brake assembly and semiaxis 15 are formed, hub for vehicle wheel motor direct-drive wheel, be separately installed with the motor that two power do not wait on two wheels, one is big motor, another is a small machine, big small machine can work alone and can work simultaneously, generally speaking, small machine is in non operating state during big machine operation, when big machine operation, drive corresponding wheel rotation by big rotor, wheel is given the wheel hub of small machine correspondence through semiaxis and differential mechanism with transmission of power, makes the wheel of small machine correspondence, realizes the effect of single motor-driven two-wheel.When small machine was worked, big motor was in non operating state, and the wheel of big motor correspondence given transmission of power in the same way by semiaxis and differential mechanism.Realize the effect of single motor-driven two-wheel.Under special circumstances, big motor and small machine are worked simultaneously, form the synthesized-power of big small machine, to satisfy the power needs of special road conditions.
When electric motor car starts and go up a slope, need bigger tractive effort, at this moment by big machine operation, when vehicle reach at the uniform velocity travel after, need less tractive effort, at this moment big motor quits work, by the small machine powered vehicle, when loaded vehicle startup or wide-angle upward slope, need superpower tractive effort, at this moment just work simultaneously by big small machine.
In the driving process of whole vehicle, the time of big machine operation is about 15%, the time of small machine work is about 80%, the big cooperative time of small machine is about 5%, this shows, in the whole driving process of electric motor car, the time of small machine work accounts for major part, and this is energy-conservation very favourable to realizing.
With wheel hub electric motor of electric vehicle from two-shipper drive be designed to unit and drive after, there is speed difference under steam in two driving wheels, and a differential assembly is installed between two-wheeled, have just solved the differential problem of two-wheeled.
After adopting single-wheel hub motor-driven four-wheel electric motor car, the load difference of motor when vehicle is turned in different directions is controlled the torque and the rotating speed of Ackermann steer angle motor with rotation direction sensor, and the vehicle held stationary is travelled.
Claims (5)
1, a kind of wheel hub electric motor of electric vehicle differential drive device comprises hub for vehicle wheel, motor, cross-bridges assembly, differential assembly, brake assembly, it is characterized in that: described hub for vehicle wheel is connected as a single entity through differential assembly by semiaxis (15), semiaxis dish (14); Described motor is the wheel hub motor of two non-constant powers; Described wheel hub motor rotor (10) is arranged in the interior circle of hub for vehicle wheel circle, and stator (11) is fixed on the cross-bridges assembly axle sleeve (18); Described brake assembly is arranged in the differential assembly U shell body.
2, wheel hub electric motor of electric vehicle differential drive device according to claim 1 is characterized in that: described hub for vehicle wheel comprises the tire groove (21) of the wheel hub plate (9) by bearing (12) location that is enclosed within on the axle sleeve (18), the hub circle (8) that is positioned at wheel hub plate (9) one sides, hub circle (8) outer end.
3, wheel hub electric motor of electric vehicle differential drive device according to claim 1 is characterized in that: described cross-bridges assembly (6) comprises cross-bridges (1), the differential mechanism fixed mount (2) that is positioned at cross-bridges (1) one side that is connected with wheel hub axle sleeve (18), the spring base (16) that is arranged at wheel hub axle sleeve (18) one ends.
4, wheel hub electric motor of electric vehicle differential drive device according to claim 1 is characterized in that: described differential assembly comprises the half-axile sleeve (20) that is connected with semiaxis (15), the differential casing (3) that is connected with half-axile sleeve (20) and semiaxis tooth (5), the planet tooth (4) that is connected with semiaxis tooth (5).
5, wheel hub electric motor of electric vehicle differential drive device according to claim 1 is characterized in that: described brake assembly comprises brake strip (22), the friction plate return spring (23) that is connected with brake strip (22) in the brake disc (25) that is connected with differential casing (3), the differential assembly U shell body, is arranged on the hydraulic cylinder (24) between two brake strips (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035635 CN2840491Y (en) | 2005-09-29 | 2005-09-29 | Electric vehicle hub electric machine differential driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035635 CN2840491Y (en) | 2005-09-29 | 2005-09-29 | Electric vehicle hub electric machine differential driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2840491Y true CN2840491Y (en) | 2006-11-22 |
Family
ID=37428463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520035635 Expired - Fee Related CN2840491Y (en) | 2005-09-29 | 2005-09-29 | Electric vehicle hub electric machine differential driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2840491Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102390224A (en) * | 2011-10-11 | 2012-03-28 | 魏海兵 | Differential mechanism of hub motor driven vehicle |
| CN101596860B (en) * | 2009-07-24 | 2013-02-13 | 上海中上汽车科技有限公司 | Split differential motor drive axle |
| CN104691320A (en) * | 2013-12-10 | 2015-06-10 | 北汽福田汽车股份有限公司 | Wheel edge motor driving mechanism and vehicle |
| DE102018210626B3 (en) | 2018-06-28 | 2019-09-19 | Ford Global Technologies, Llc | axle assembly |
-
2005
- 2005-09-29 CN CN 200520035635 patent/CN2840491Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101596860B (en) * | 2009-07-24 | 2013-02-13 | 上海中上汽车科技有限公司 | Split differential motor drive axle |
| CN102390224A (en) * | 2011-10-11 | 2012-03-28 | 魏海兵 | Differential mechanism of hub motor driven vehicle |
| CN104691320A (en) * | 2013-12-10 | 2015-06-10 | 北汽福田汽车股份有限公司 | Wheel edge motor driving mechanism and vehicle |
| DE102018210626B3 (en) | 2018-06-28 | 2019-09-19 | Ford Global Technologies, Llc | axle assembly |
| US10807462B2 (en) | 2018-06-28 | 2020-10-20 | Ford Global Technologies, Llc | Axle assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |