CN105459815B - Power drive system for vehicle and the vehicle with the power drive system - Google Patents

Abstract

The invention discloses a kind of power drive system for vehicle and the vehicles with the power drive system.The power drive system include: can differential rotation pair of wheels；First motor generator and the second motor generator, the first motor generator are arranged to be arranged to and another linkage in pair of wheels with a linkage in pair of wheels, the second motor generator；And anti-skidding synchronizer, anti-skidding synchronizer are arranged to optionally synchronize pair of wheels, so that pair of wheels synchronous rotary.Power drive system of the invention can be not provided with the mechanical no-spin lockup structure of conventional power transmission system, but the function of tradition machinery formula no-spin lockup functionally but may be implemented by the synchronous effect of anti-skidding synchronizer, so that the structure of power drive system according to an embodiment of the present invention is more compact, cost is lower.

Description

Powertrain for vehicle and vehicle having the same

technical field

The present invention relates to the technical field of automobiles, and in particular, to a power transmission system for a vehicle and a vehicle having the power transmission system.

Background technique

Chinese invention patent application (application number: 89209460.5) discloses an automobile drive axle with differential lock. The automobile drive axle has components such as planetary gears, differentials, half shafts, axle sleeves, jaw clutches and shift forks. It is mainly that the above-mentioned jaw clutch is arranged on one or two half shafts of the car. When the driving wheel of the car slips, the jaw clutch is controlled by the shift fork to selectively work to form a rigid connection between the two half shafts. , the differential locks and the differential function is lost.

However, when this type of drive axle structure realizes the differential lock function, the action of the shift fork needs to be realized by turning on and off the electromagnet, so that the shift fork drives the clutch to mechanically connect the two half shafts, which is not only complicated in structure , and the clutch needs to be installed and fixed on the differential housing and the axle sleeve of the half shaft, especially when the clutch is installed on both half shafts, it will further increase the complexity of the system, take up a lot of space, and have a large mass. high cost.

SUMMARY OF THE INVENTION

The present invention aims to solve one of the above-mentioned technical problems in the prior art at least to a certain extent. Therefore, an object of the present invention is to provide a power transmission system for a vehicle, which can realize the synchronous rotation of the two wheels through the synchronizing action of the synchronizer when the driving wheel slips, thereby greatly improving the wheels Slip phenomenon, increase the passability of the vehicle, and have low cost and small size.

Another object of the present invention is to propose a vehicle having a powertrain as described above.

A power transmission system for a vehicle according to an embodiment of the present invention includes: a pair of wheels that are differentially rotatable; a first motor-generator and a second motor-generator, the first motor-generator being arranged to communicate with the one interlocking one of the wheels, the second motor generator arranged to interlock with the other of the pair of wheels; and an anti-skid synchronizer arranged to selectively synchronize the pair of wheels , so that the pair of wheels rotate synchronously.

The power transmission system according to the embodiment of the present invention may not be provided with the mechanical self-locking differential structure of the conventional power transmission system, but functionally, the function of the traditional mechanical self-locking differential can be realized through the synchronizing action of the anti-skid synchronizer. Therefore, the structure of the power transmission system according to the embodiment of the present invention is more compact and the cost is lower.

A vehicle according to another embodiment of the present invention includes a powertrain for a vehicle as described above.

Description of drawings

1 is a schematic diagram of a powertrain system according to one embodiment of the present invention;

2 is a schematic diagram of a powertrain system according to yet another embodiment of the present invention;

3 is a schematic diagram of a powertrain system according to yet another embodiment of the present invention;

4 is a schematic diagram of a powertrain system according to yet another embodiment of the present invention.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore It should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

The power transmission system 100 according to the embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 4 . The power transmission system 100 is suitable for use in a vehicle and can lock the pair of driving wheels when the wheels 203 and 303 slip, so as to Improve slippage and improve vehicle passing performance.

The power transmission system 100 according to the embodiment of the present invention may include a pair of wheels 203 , 303 , a first motor generator 201 , a second motor generator 301 , and an anti-skid synchronizer 503 .

A pair of wheels 203, 303 can rotate at a differential speed, in other words, the two wheels 203, 303 can rotate independently at different speeds without interfering with each other, for example, when the anti-skid synchronizer 503 is in a disconnected state, the two wheels 203, 303 303 may be in a non-fixed state, and at this time, the two wheels 203 and 303 can rotate at a differential speed.

The first motor-generator 201 is arranged to be linked with one of the wheels, in other words, the first motor-generator 201 cooperates with one wheel 203 of the pair of wheels for transmission, for example, the first motor-generator 201 can output power to the one wheel The wheel drives the one wheel 203 to rotate. For another example, the first motor generator 201 can also absorb energy from the one wheel 203 to generate electricity.

Similarly, the second motor-generator 301 is arranged to be linked with the other wheel 303 in the pair of wheels, in other words, the second motor-generator 301 cooperates with the other wheel 303 for transmission, for example, the second motor-generator 301 may The power is output to the other wheel 303 to drive the other wheel 303 to rotate. For another example, the second motor generator 301 can also absorb energy from the other wheel 303 to generate electricity.

The anti-skid synchronizer 503 is arranged to selectively synchronize the pair of wheels 203, 303 so that the pair of wheels 203, 303 rotate synchronously, in other words, after the anti-skid synchronizer 503 synchronizes the pair of wheels 203, 303 (ie, anti-skid The synchronizer 503 is in an engaged state), and the pair of wheels 203 and 303 form a fixed connection, so as to rotate synchronously without differential rotation. When the anti-skid synchronizer 503 is in the disconnected state, the first motor-generator 201 and the second motor-generator 301 can respectively drive the corresponding wheels to rotate at different speeds to realize the differential rotation function of the two wheels 203 and 303 . Of course, the first motor generator 201 and the second motor generator 301 may also drive the pair of wheels 203 and 303 to rotate at the same rotational speed.

Therefore, according to the power transmission system 100 of the embodiment of the present invention, by setting the first motor generator 201 and the second motor generator 301 to drive the two wheels 203 and 303 independently, the difference between the two wheels 203 and 303 can be realized. When one of the wheels slips, the anti-skid synchronizer 503 can synchronize the two wheels 203, 303 to make the two wheels 203, 303 rotate synchronously, so as to realize the power coupling of the output of the two motors and jointly drive the two wheels 203 and 303 work to improve the wheel slip phenomenon and improve the passing ability of the vehicle. In particular, when one of the wheels slips, the power of the first motor-generator 201 and the second motor-generator 301 can jointly drive the other wheel without slippage, so that the other wheel without slippage can obtain two The power of one motor greatly improves the slipping phenomenon.

In short, the power transmission system 100 according to the embodiment of the present invention may not be provided with the mechanical self-locking differential structure of the conventional power transmission system, but functionally, the traditional mechanical self-locking differential can be realized through the synchronizing action of the anti-skid synchronizer 503 . The function of locking the differential, thereby making the structure of the power transmission system 100 according to the embodiment of the present invention more compact and lower in cost.

The transmission mode of the motor-generator and the wheels will be described in detail below with reference to the examples of FIGS. 1-4 .

In some embodiments, as shown in FIGS. 1-4 , the first motor-generator 201 and the corresponding wheel 203 are indirectly driven through a gear structure. Similarly, the second motor-generator 301 and the corresponding wheel 303 are indirectly driven. Indirect transmission is also possible through this gear structure.

The transmission through the gear structure is easy to realize and has a simple structure, and the required transmission ratio can be obtained, and the transmission is reliable. In addition, the two motor generators and the corresponding wheels 203 and 303 perform power transmission through the same gear structure, which also improves the versatility of the gear structure, and at the same time makes the power transmission system 100 have a high symmetry, avoiding the excessive center of gravity. The deviation of one side enables the center of gravity to be better positioned at or near the middle of the two wheels 203 , 303 , thereby improving the stability and reliability of the power transmission system 100 .

Further, as an optional embodiment, the gear structure adopted between the first motor generator 201 and the corresponding wheel 203 may include four first gears 401 , second gears 402 , third gears 403 and fourth gears 404 gear. The first gear 401 may be disposed on the first motor power output shaft 202 corresponding to the first motor generator 201 , and the first gear 401 may rotate synchronously with the first motor power output shaft 202 . The wheel 203 corresponding to the first motor generator 201 is connected with the first half shaft 204 , the second gear 402 is arranged on the first half shaft 204 and can rotate synchronously with the first half shaft 204 , and the third gear 403 and the first gear 401 meshes and the fourth gear 404 meshes with the second gear 402, and the third gear 403 and the fourth gear 404 are coaxially arranged and synchronously rotatable.

Similarly, the gear structure adopted between the second motor generator 301 and the corresponding wheel 303 may include four gears, a fifth gear 405 , a sixth gear 406 , a seventh gear 407 and an eighth gear 408 . The fifth gear 405 may be disposed on the second motor power output shaft 302 corresponding to the second motor generator 301 and may rotate synchronously with the second motor power output shaft 302 . The wheel 303 corresponding to the second motor generator 301 is connected with the second half shaft 304 , the sixth gear 406 is arranged on the second half shaft 304 and can rotate synchronously with the second half shaft 304 , the seventh gear 407 and the fifth gear 405 meshes and the eighth gear 408 meshes with the sixth gear 406, and the seventh gear 407 and the eighth gear 408 are arranged synchronously and can rotate synchronously.

Preferably, the first motor PTO shaft 202 may be the motor shaft of the first motor generator 201 , and the second motor PTO shaft 302 may be the motor shaft of the second motor generator 301 . Of course, optionally, the first motor power output shaft 202 and the motor shaft of the first motor generator 201 may also be two separate components. In this case, the first motor power output shaft 202 and the motor of the first motor generator 201 The shafts can be connected. Similarly, the second motor power output shaft 302 and the motor shaft of the second motor generator 301 may also be two separate components, and in this case, the second motor power output shaft 302 is connected with the motor shaft of the second motor generator 301, that is Can.

Preferably, the size and number of teeth of the first gear 401 and the fifth gear 405, the second gear 402 and the sixth gear 406, the third gear 403 and the seventh gear 407, and the fourth gear 404 and the eighth gear 408 may be the same, respectively, Thus, the versatility of the gear structure is improved.

As an optional embodiment, the third gear 403 and the fourth gear 404 can be fixed on the first gear shaft 501 , and the seventh gear 407 and the eighth gear 408 can be fixed on the second gear shaft 502 . Of course, the third gear 403 and the fourth gear 404 can also be configured as stepped gears or a geared gear structure. Similarly, the seventh gear 407 and the eighth gear 408 can also be configured as stepped gears or a geared gear structure.

In one example, as shown in FIG. 1 , the anti-skid synchronizer 503 may be provided on the first axle shaft 204 and configured to selectively engage the sixth gear 406 , eg, the sixth gear 406 toward a side of the anti-skid synchronizer 503 . The side can be provided with an engagement ring gear, and the engagement sleeve of the anti-skid synchronizer 503 is fitted with the engagement ring gear. Thus, after the anti-skid synchronizer 503 is engaged, the pair of gears will rotate synchronously.

In another example, as shown in FIG. 2 , an anti-skid synchronizer 503 is provided on the first motor PTO shaft 202 and is configured to selectively engage the fifth gear 405 , eg, the fifth gear 405 faces the anti-skid synchronizer 503 An engaging ring gear can be provided on one side of the fuselage, and the engaging sleeve of the anti-skid synchronizer 503 is adapted to the engaging ring gear. Thus, after the anti-skid synchronizer 503 is engaged, the pair of gears will rotate synchronously.

In yet another example, as shown in FIG. 3 , the anti-skid synchronizer 503 is provided on the first gear shaft 501 and is configured to selectively engage the seventh gear 407 , eg, the seventh gear 407 faces an angle of the anti-skid synchronizer 503 . The side can be provided with an engagement ring gear, and the engagement sleeve of the anti-skid synchronizer 503 is fitted with the engagement ring gear. Thus, after the anti-skid synchronizer 503 is engaged, the pair of gears will rotate synchronously.

Optionally, in the example of FIG. 4 , the first motor generator 201 is coaxially connected to the corresponding wheel 203 and the second motor generator 301 is coaxially connected to the corresponding wheel 303 . Further, both the first motor-generator 201 and the second motor-generator 301 may be wheel-side motors, so that the transmission chain is short, the transmission energy loss is small, and the transmission efficiency is high.

Further, as shown in FIG. 4 , the anti-skid synchronizer 503 may be disposed on the first motor PTO shaft 202 corresponding to the first motor generator 201 and configured to selectively engage the second motor corresponding to the second motor generator 301 PTO shaft 302 . Thus, after the anti-skid synchronizer 503 is engaged, the pair of gears will rotate synchronously.

Furthermore, embodiments in accordance with the present invention further provide a vehicle including the powertrain 100 as described above. It should be understood that, other components of the vehicle according to the embodiment of the present invention, such as a driving system, a steering system, a braking system, etc., are already in the prior art and are well known to those of ordinary skill in the art. Description is omitted here.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Embodiments are subject to variations, modifications, substitutions and variations.

Claims (11)

1. a kind of power drive system for vehicle characterized by comprising

Can differential rotation pair of wheels；

First motor generator and the second motor generator, first motor generator be arranged to in the pair of wheel One linkage, second motor generator are arranged to and another linkage in the pair of wheel；And

Anti-skidding synchronizer, the anti-skidding synchronizer are arranged to optionally synchronize the pair of wheel, so that described one To wheel synchronous rotary；

When the anti-skidding synchronizer is further configured to that a wheel has skidded wherein, by first motor generator and institute State the wheel that the power of the second motor generator drives another not skid jointly.

2. the power drive system according to claim 1 for vehicle, which is characterized in that first motor generator And the corresponding wheel and second motor generator pass through gear structure indirect drive with the corresponding wheel.

3. the power drive system according to claim 2 for vehicle, which is characterized in that

First gear, the first electronic hair are provided on the corresponding first motor power output shaft of first motor generator The corresponding wheel of motor is connected with the first semiaxis, is provided with second gear on first semiaxis；The powertrain System further include: third gear and the 4th gear, the third gear is engaged with the first gear and the 4th gear and institute Second gear engagement is stated, the third gear is coaxially arranged with the 4th gear and can synchronous rotary；And

The 5th gear, the second electronic hair are provided on the corresponding second motor power output shaft of second motor generator The corresponding wheel of motor is connected with the second semiaxis, is provided with the 6th gear on second semiaxis；The powertrain System further include: the 7th gear and eighth gear, the 7th gear is engaged with the 5th gear and the eighth gear and institute The engagement of the 6th gear is stated, the 7th gear is coaxially arranged with the eighth gear and can synchronous rotary.

4. the power drive system according to claim 3 for vehicle, which is characterized in that the third gear with it is described 4th gear is fixed on first gear axis；And

7th gear and the eighth gear are fixed on second gear axis.

5. the power drive system according to claim 3 for vehicle, which is characterized in that the anti-skidding synchronizer setting On first semiaxis and it is arranged to be selectively engageable the 6th gear.

6. the power drive system according to claim 3 for vehicle, which is characterized in that the anti-skidding synchronizer setting On the first motor power output shaft and it is arranged to be selectively engageable the 5th gear.

7. the power drive system according to claim 4 for vehicle, which is characterized in that the anti-skidding synchronizer setting On the first gear axis and it is arranged to be selectively engageable the 7th gear.

8. the power drive system according to claim 1 for vehicle, which is characterized in that first motor generator And the corresponding wheel is coaxially connected and second motor generator is coaxially connected with the corresponding wheel.

9. the power drive system according to claim 8 for vehicle, which is characterized in that the anti-skidding synchronizer setting On the corresponding first motor power output shaft of first motor generator and it is arranged to be selectively engageable described second The corresponding second motor power output shaft of motor generator.

10. the power drive system according to claim 3 or 9 for vehicle, which is characterized in that the first motor is dynamic Power output shaft is the motor shaft of first motor generator；And

The second motor power output shaft is the motor shaft of second motor generator.

11. a kind of vehicle, which is characterized in that passed including the power according to claim 1 to 10 for vehicle Dynamic system.