An electric drive device, system, and vehicle for a vehicle

Abstract

The application provides an electric drive device for a vehicle, comprising: diagonal drive devices, the diagonal drive devices comprising a first diagonal drive device; a wheel assembly, the wheel assembly comprising a first wheel and a second wheel, the first wheel and the second wheel being arranged on a diagonal line of the vehicle respectively; a differential control assembly, the differential control assembly comprising a first differential and a first differential lock; wherein the first diagonal drive device is connected with the first wheel and the second wheel respectively, the first differential is connected with the first diagonal drive device, and the first differential lock is connected with the first differential. The application is used for solving the problem that the vehicle cannot normally travel when slipping, and mainly relates to an electric drive device, which can make the wheels on the other diagonal line normally work by locking one drive device, so as to ensure the normal travel of the vehicle.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle driving, in particular to an electric driving device for a vehicle. BACKGROUND

[0002] Most of the existing electric four-wheel drive vehicles adopt two differential devices in front and back, wherein the front differential realizes power transmission and differential of the front axle, and the rear differential realizes power transmission and differential of the rear axle. When driving in complex road conditions such as ice and snow, mud and marsh, the diagonal (also known as cross axle) two wheels are likely to be suspended or slip, resulting in the vehicle unable to drive normally.

[0003] A common measure is to use an ESP system (electronic stability control system) to control the slip of the wheels by braking, which is called an electronic limited slip system. However, when the electronic limited slip system intervenes, the turning performance will be affected. In order to ensure the turning performance, the electronic limited slip function will be weakened, and the electronic limited slip system will lose the limited slip function when it works for a long time. SUMMARY

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present application is to provide an electric driving device, system and vehicle for a vehicle, which solves the problem that the vehicle cannot drive normally when it slips in the prior art, mainly relates to an electric driving device, and provides a diagonal wheel driving method and a use method of a mechanical differential lock.

[0005] The present application provides an electric driving device for a vehicle, comprising:

[0006] a diagonal driving device, the diagonal driving device comprising a first diagonal driving device;

[0007] a wheel assembly, the wheel assembly comprising a first wheel and a second wheel, the first wheel and the second wheel being respectively arranged on a first diagonal line of the vehicle;

[0008] a differential control assembly, the differential control assembly comprising a first differential and a first differential lock;

[0009] wherein the first diagonal driving device is connected with the second wheel, the first differential is connected with the first diagonal driving device, and the first differential lock is connected with the first differential.

[0010] In an embodiment of the present application, the first differential differentially outputs power to the first wheel and the second wheel through the connection with the first diagonal driving device, so as to ensure normal work when turning.

[0011] In one embodiment of the present application, the first differential comprises half shaft gears and a differential case, the first differential lock comprises a meshing sleeve and a differential lock solenoid, the first differential lock drives the meshing sleeve to fix the half shaft gears with the differential case through the differential lock solenoid, so as to realize the locking of the first differential.

[0012] In one embodiment of the present application, the diagonal driving device further comprises a second diagonal driving device; the wheel assembly further comprises a third wheel and a fourth wheel, the third wheel and the fourth wheel are respectively arranged on a second diagonal line intersecting with the first diagonal line of the vehicle; the differential control assembly further comprises a second differential and a second differential lock; wherein the second diagonal driving device is connected with the third wheel, the second differential is connected with the second diagonal driving device, and the second differential lock is connected with the second differential.

[0013] In one embodiment of the present application, the transmission assembly comprises a hollow transmission shaft and a solid transmission shaft, the solid transmission shaft is arranged inside the hollow transmission shaft, the hollow transmission shaft is connected with the first wheel and the first diagonal driving device respectively, and the solid transmission shaft is connected with the fourth wheel and the second diagonal driving device respectively, the transmission assembly transmits power to the first wheel and the fourth wheel respectively.

[0014] In one embodiment of the present application, when one wheel of the vehicle slips, the driving device connected with the wheel stops working, while the other driving device normally works and drives the wheel on the diagonal line connected therewith to rotate, so as to make the vehicle normally run.

[0015] In one embodiment of the present application, when the vehicle is in a complex terrain, one or two wheels of the vehicle are in the air, and the corresponding differential lock of the differential assembly can lock the corresponding differential, so as to relatively increase the power output to other wheels.

[0016] The present application provides an electric driving system for a vehicle, comprising:

[0017] A driving system, the driving system comprising a first driving system;

[0018] A wheel system, the wheel system comprising a first wheel and a second wheel, the first driving system driving the first wheel and the second wheel arranged on a diagonal line;

[0019] A differential system, the differential system realizing diagonal differential of the first wheel and the second wheel driven by the first driving system.

[0020] In one embodiment of the present application, a locking system is further included, which controls the operation of the differential system; the driving system further includes a composite transmission system, which provides power to the wheels.

[0021] The present application provides a vehicle including the electric driving device or electric driving system as described above, which has the function of driving and differentially controlling the wheels on the diagonal.

[0022] The present application provides an electric driving device for a vehicle, which can drive the wheels on the diagonal by the motor and realize differential through the differential, and can ensure normal turning of the vehicle when the wheels slip.

[0023] Further, the electric driving device of the present application further provides a mechanical differential lock on the differential, which can ensure the differential lock to work while overheating, and can increase the power of the wheels when the wheels are off the ground. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed for the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0025] Figure 1 The structure schematic diagram of the electric driving device in one embodiment of the present application is shown;

[0026] Figure 2 The structure schematic diagram of the first driving device and the driving wheels thereof in one embodiment of the present application is shown;

[0027] Figure 3 The structure schematic diagram of the second driving device and the driving wheels thereof in one embodiment of the present application is shown;

[0028] Figure 4 The structure schematic diagram of the differential and the differential lock in one embodiment of the present application is shown

[0029] Figure 5 The structure schematic diagram of the composite transmission shaft in one embodiment of the present application is shown;

[0030] Figure 6 The architecture diagram of the electric driving system in one embodiment of the present application is shown

[0031] Element number explanation:

[0032] Drive device 100, first drive device 110, second drive device 120, first motor 111, second motor 121, fourth wheel power output drive gear 122, fourth wheel power output driven gear 123, fourth wheel power input drive gear 124, fourth wheel power input driven gear 125, fourth wheel half shaft 126, first wheel power output drive gear 112, first wheel power output driven gear 113, first wheel power input drive gear 114, first wheel power input driven gear 115, first wheel half shaft 116; differential assembly 300, first differential 310, first differential lock 320, second differential 330, second differential lock 340, differential housing 331, differential reduction input gear 332, axle shaft gear 333, engagement sleeve 341, differential lock yoke 342, differential lock solenoid 343, differential housing lock spline 344, axle shaft gear lock spline 345; wheel assembly 200, first wheel 210, second wheel 220, third wheel 230, fourth wheel 240, transmission assembly 400, hollow drive shaft 410, solid drive shaft 420, solid drive shaft support bearing 421. DETAILED DESCRIPTION

[0033] The present application is herein described, by way of example only, with reference to the accompanying drawings, wherein:

[0034] It should be noted that the following examples and features thereof can be combined with each other, if there is no conflict. It should also be understood that the terms used in the embodiments of the present application are intended to describe specific embodiments, and are not intended to limit the protection scope of the present application. The test methods in the following examples, if not specified, are generally carried out under conventional conditions, or under the conditions recommended by the manufacturers.

[0035] Reference will now be made to Figures 1 to 6It is to be understood that the structures, proportions, sizes, etc. shown in the drawings accompanying the present specification are merely intended to assist in understanding and reading the present specification, and are not intended to limit the conditions under which the present application can be implemented, and therefore do not have technical significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, which does not affect the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", and "one" used in the present specification are only for the purpose of clear description, and are not intended to limit the scope of the present application. The change or adjustment of the relative relationship without substantial change of the technical content should also be considered as the scope of the present application.

[0036] The present application provides an electric drive device for a vehicle, which can normally turn when the vehicle slips. Specifically, as shown in Figure 1 The electric hidden handle device of the present application comprises: diagonal driving devices 100, the diagonal driving devices 100 comprising first diagonal driving devices 110 and second diagonal driving devices 120; wheel assemblies 200, the wheel assemblies 200 comprising first wheels 210, second wheels 220, third wheels 230 and fourth wheels 240, the first wheels 210 and the second wheels 220 being respectively arranged on one diagonal line of the vehicle, the third wheels 230 and the fourth wheels 240 being respectively arranged on the first diagonal line of the vehicle; differential control assemblies 300, the differential control assemblies 300 comprising first differentials 310 and first differential locks 320; wherein the first diagonal driving devices 110 are connected with the second wheels 220, the second diagonal driving devices 120 are respectively connected with the third wheels 230 and the fourth wheels 240. The first differentials 310 are connected with the first diagonal driving devices 110, and the first differential locks 320 are connected with the first differentials 310.

[0037] As shown in Figure 2As shown, the first driving device 110 is loaded at the rear end of the vehicle. The first driving device 110 includes a first driving motor 111, a first wheel power output driving gear 112, a first wheel power output driven gear 113, a first wheel power input driving gear 114, a first wheel power input driven gear 115 and a first wheel half shaft 116. The first driving device 110 is connected with the second wheel 220, and the first driving device 110 is connected through the hollow transmission shaft 410 of the composite transmission shaft 400. When the vehicle is running, the first wheel power output driving gear 112 drives the first wheel power output driven gear 113 to rotate, and the power is transmitted to the hollow transmission shaft 410, the hollow transmission shaft 410 drives the first wheel power input driving gear 114 to rotate, and further drives the first wheel power input driven gear 115 to rotate, so as to transmit the power to the first wheel 210 through the first wheel half shaft 116. The first differential mechanism 310 is connected with the first driving device 110, and is used for balancing the kinetic energy output by the first driving device 110 to the first wheel 210 and the second wheel 220, so that the speeds of the first wheel 210 and the second wheel 220 realize differential speed when turning, and the vehicle can be ensured to normally run when turning. The first differential lock 320 is connected with the first differential mechanism 310, and can stop the first differential mechanism 310 from working in a mechanical locking manner when needed.

[0038] As shown, Figure 3 The second driving device 120 is loaded at the front end of the vehicle. The second driving device 120 includes a second driving motor 121, a fourth wheel power output driving gear 122, a fourth wheel power output driven gear 123, a fourth wheel power input driving gear 124, a fourth wheel power input driven gear 125 and a fourth wheel half shaft 126. The second driving device 120 is connected with the third wheel 230, and the second driving device 120 is connected with the fourth wheel 240 through the solid transmission shaft 420 of the composite transmission shaft 400. When the vehicle is running, the fourth wheel power output driving gear 122 drives the fourth wheel power output driven gear 123 to rotate, and the power is transmitted to the solid transmission shaft 420, the solid transmission shaft 420 drives the fourth wheel power input driving gear 124 to rotate, and further drives the fourth wheel power input driven gear 125 to rotate, so as to transmit the power to the fourth wheel 240 through the fourth wheel half shaft 126. The second differential mechanism 330 is connected with the second driving device 120, and is used for balancing the kinetic energy output by the second driving device 120 to the third wheel 230 and the fourth wheel 240, so that the speeds of the third wheel 230 and the fourth wheel 240 realize differential speed when turning, and the vehicle can be ensured to normally run when turning. The second differential lock 340 is connected with the second differential mechanism 330, and can stop the second differential mechanism 330 from working in a mechanical locking manner when needed.

[0039] As shown, Figure 4The mechanical structure of the differential lock is shown. The first differential lock 320 and the second differential lock 340 have the same working principle. The mechanical structure of the second differential 330 and the second differential lock 340 is taken as an example for illustration. The second differential 330 comprises a differential housing 331, a differential reduction input gear 332 and a half shaft gear 333. The second differential lock 340 comprises an engaging sleeve 341, a differential lock yoke 342, a differential lock solenoid 343 and a differential housing locking spline 344. In the normal state, the engaging sleeve 341 is engaged with the differential housing locking spline 344. When the differential housing 331 rotates, the engaging sleeve 341 idles. When the wheels are in the air, the rotation speed of the wheels in the air is greater than that of the differential, which drives the differential planetary gear to rotate. At this time, the half shaft gear 333 stops rotating, that is, the two half shaft gears on the left and right have a large speed difference relative to the differential housing 331. When the driver presses the differential lock operation switch, the differential lock solenoid 343 receives an electric signal, drives the differential lock yoke 342 to move, further drives the engaging sleeve 341 to move towards the half shaft gear locking spline 345, so that the engaging sleeve 341, the differential housing locking spline 344 and the half shaft gear locking spline 345 are fixedly connected together, and finally the half shaft gear 333 and the differential housing 331 are fixedly connected together, and the rotation speed of the two is synchronized. At this time, the differential planetary gear revolves, but cannot rotate, and the rotation speed of the half shaft gear 333 is limited to be the same as that of the differential housing 331, that is, the differential is locked. When the differential lock operation switch is pressed again, the differential lock solenoid 343 receives an electric signal, drives the differential lock yoke 342 to move, further drives the engaging sleeve 341 to reset, so that the differential housing locking spline 344 and the half shaft gear locking spline 344 are disengaged, and the differential function is restored. The locking function of the differential lock makes the wheels in the air rotate at the same speed as the wheels on the ground, which increases the power of the wheels in contact with the ground, and makes the vehicle more suitable for complex terrain. At the same time, the differential lock structure is a mechanical structure, which is different from the traditional electronic limited slip device, and prevents the device from overheating and failing after long time work.

[0040] As Figures 1-4 shown, when any one wheel slips, the driving device driving the wheel stops working without locking the differential. At this time, the two wheels on the other diagonal line can still drive the vehicle to move forward, because any differential is not locked, so the steering performance is not affected. Moreover, in actual driving, four wheels are usually at least two wheels on one diagonal line (with good adhesion), but sometimes the adhesion is on one diagonal line and sometimes on the other diagonal line. The present application can adapt to the situation, without locking the differential, so the steering is not affected. The vehicle with the common three differential arrangement must lock the differential, which affects the steering at this time.

[0041] For example, when the first wheel 210 or the second wheel 240 slips, the first driving device 110 stops power output, the first wheel 210 and the second wheel 220 lose power at the same time, but at this time the third wheel 230 and the fourth wheel 240 on the other diagonal line continue to work, without affecting the turning. When the third wheel 230 or the fourth wheel 240 slips, the second driving device 120 stops power output, the third wheel 230 and the fourth wheel 240 lose power at the same time, but at this time the first wheel 210 and the second wheel 220 on the other diagonal line continue to work, without affecting the turning, and the vehicle drives normally.

[0042] For example, when the first wheel 210 or the second wheel 220 is lifted, the first differential lock 320 starts to work and locks the first differential 310, and the power output by the first driving device 110 does not have differential, and the driving force of the other wheel is relatively increased. When the third wheel 230 or the fourth wheel 240 is lifted, the second differential lock 340 starts to work and locks the second differential 330, and the power output by the second driving device 120 does not have differential, and the driving force of the other wheel is relatively increased. When the first wheel 210 and the third wheel or the fourth wheel are lifted at the same time, the first differential lock 320 and the second differential lock 340 work at the same time to lock the first differential 310 and the second differential 330 respectively, and the power output by the first driving device 110 and the second driving device 120 does not have differential, and the driving force of the other two wheels is relatively increased. When the second wheel 210 and the third wheel or the fourth wheel are lifted at the same time, the first differential lock 320 and the second differential lock 340 work at the same time to lock the first differential 310 and the second differential 330 respectively, and the power output by the first driving device 110 and the second driving device 120 does not have differential, and the driving force of the other two wheels is relatively increased.

[0043] As shown in Figure 5 The structure of the composite transmission shaft 400 is shown in the figure. The two ends of the composite transmission shaft 400 are connected with the first wheel power output driven gear 113, the first wheel power input driving gear 114, the fourth wheel power output driven gear 123 and the fourth wheel power input driving gear 124 respectively. The hollow transmission shaft 410 of the composite transmission shaft 400 transmits power to the first wheel 210 through the first wheel power output driven gear 113 and the first wheel power input driving gear 114, and the fourth wheel power output driven gear 123 and the fourth wheel power input driving gear 124 transmit power to the fourth wheel. The hollow transmission shaft 410 is composed of a hollow transmission shaft and gears at both ends, and the solid transmission shaft 420 is composed of a solid transmission shaft and gears at both ends. The solid transmission shaft 410 passes through the hollow transmission shaft 420 to form a set of composite transmission shaft 400.

[0044] As shown in Figure 6As shown, the application also provides an electric drive system for a vehicle, comprising: a drive system, the drive system comprising a first drive system; a wheel system, the wheel system comprising a first wheel and a second wheel, the first drive system driving the first wheel and the second wheel located on a diagonal line; a differential system, the differential system realizing differential of the first wheel and the second wheel driven by the first drive system on the diagonal line. Meanwhile, the electric drive system further comprises a locking system, the locking system controlling the working of the differential system; the drive system further comprises a composite transmission system, the composite transmission system transmitting kinetic energy to the wheels.

[0045] The application also provides a vehicle, which is equipped with the above-mentioned electric drive device or electric drive system, and has the function of driving and differentially controlling the wheels on the diagonal line.

[0046] The application provides an electric drive device, system and vehicle for a vehicle, which drives the wheels on different diagonal lines by two drive devices respectively, controls the power output by the two drive devices by two differentials respectively, and controls the working of the differentials by using a mechanical differential lock, so that the differential lock can lock the differential when the vehicle needs.

[0047] The application drives the wheels on the diagonal line by the drive device, so that when the vehicle slips, the differential controlling the slipping wheel can be locked by the differential lock connected thereto, and the wheels and the drive device on the other diagonal line continue to work, so that the vehicle can normally drive.

[0048] Further, the application transmits the power to the wheels by the composite transmission shaft, so as to reduce the use of internal space.

[0049] Therefore, the electric drive device, system and vehicle for a vehicle can achieve the effect of normal driving when the vehicle slips.

[0050] The above-mentioned embodiments only exemplarily illustrate the principle and effect of the application, and are not used to limit the application. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought of the application should be covered by the claims of the application.

Claims

1. An electric drive device for a vehicle, characterized by comprising: The utility model relates to a kind of vehicle differential locking mechanism, including: Diagonal driving device (100), the diagonal driving device (100) includes first diagonal driving device (110) and second diagonal driving device (120); Wheel assembly (200), the wheel assembly (200) includes first wheel (210) and second wheel (220) and third wheel (230) and fourth wheel (240), the first wheel (210) and the second wheel (220) are respectively located on the first diagonal line of the vehicle, the third wheel (230) and fourth wheel (240) are respectively located on the second diagonal line of the vehicle crossing the first diagonal line, the first wheel (210) and the third wheel (230) are front side wheel, the second wheel (220) and the fourth wheel (240) are rear side wheel; Differential control assembly (300), the differential control assembly (300) includes first differential (310) and first differential lock (320) and second differential (330) and second differential lock (340); Wherein, the first diagonal driving device (110) is connected with the second wheel (220), the first differential (310) is connected with the first diagonal driving device (110), the first differential lock (320) is connected with the first differential (310), and the first differential (310) is stopped by mechanical locking mode;The second diagonal driving device (120) is connected with the third wheel (230), the second differential (330) is connected with the second diagonal driving device (120), the second differential lock (340) is connected with the second differential (330), and the second differential (330) is stopped by mechanical locking mode; When the vehicle slips, the diagonal driving device (100) connected with the wheel stops working, and the other diagonal driving device (100) works normally and drives the wheel on the diagonal line connected with it to rotate, so that the vehicle runs normally.

2. The electric drive device for a vehicle according to claim 1, characterized by, The first differential (310) is connected with the first diagonal driving device (110), so that the power differential of the first wheel (210) and the second wheel (220) is output, to ensure normal work when turning.

3. The electric drive device for a vehicle according to claim 1, characterized by, The first differential (310) includes half shaft gear and differential housing, the first differential lock (320) includes engagement sleeve and differential lock solenoid, the first differential lock (320) drives the engagement sleeve to make the half shaft gear and the differential housing fixedly connected by the differential lock solenoid, so as to realize the locking of the first differential (310).

4. The electric drive apparatus for a vehicle according to claim 1, characterized by, The transmission assembly (400) includes a hollow transmission shaft (410) and a solid transmission shaft (420), the solid transmission shaft (420) is arranged inside the hollow transmission shaft (410), the hollow transmission shaft (410) is connected with the first wheel (210) and the first diagonal driving device (110) respectively, the solid transmission shaft (420) is connected with the fourth wheel (240) and the second diagonal driving device (120) respectively, and the transmission assembly (400) transmits power to the first wheel (210) and the fourth wheel (240) respectively.

5. The electric drive apparatus for a vehicle according to claim 1, characterized by, When the vehicle is in complex terrain, one or two wheels of the vehicle are in the air, and the corresponding differential lock of the differential control assembly (300) can lock the corresponding differential, thereby relatively increasing the power output to the other wheels.

6. A vehicle comprising the electric drive device according to any one of claims 1-5.

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