Electric drive axle device and vehicle

Abstract

The invention discloses an electric drive axle device and a vehicle, relates to the technical field of drive axles, and discloses the electric drive axle device which comprises a first motor drive module and a second motor drive module. The output end of the second motor driving module is connected with the output end of the first motor driving module; the first end of the driving output module is connected with the output end of the first motor driving module, the second end of the driving output module is connected with a driving axle, and when the first motor driving module is in a gear shifting state, the second motor driving module is in a normal power output state; and when the second motor driving module is in a gear shifting state, the first motor driving module is in a normal power output state. The electric drive axle device is free of power interruption during gear shifting.

Description

Technical Field

[0001] The present application relates to the technical field of drive axles, and in particular to an electric drive axle device and a vehicle. Background Art

[0002] As various types of motor-driven vehicles become increasingly popular, users are also placing higher demands on the design of electric drive axles.

[0003] The traditional electric drive axle device drives the vehicle by using an electric drive axle with a single motor. This electric drive axle device has a gear shift interruption phenomenon when the electric drive axle with a single motor shifts gears, that is, there is a power loss at the moment of gear shifting. Therefore, there is an urgent need for a new electric drive axle device to achieve no power interruption when shifting gears.

[0004] The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are prior art. Summary of the invention

[0005] The main purpose of the present application is to provide an electric drive axle device and a vehicle, aiming to solve the technical problem of how to achieve no power interruption when the electric drive axle device shifts gears.

[0006] To achieve the above objectives, the present application provides an electric drive axle device, the electric drive axle device comprising:

[0007] A first motor drive module;

[0008] a second motor driving module, wherein an output end of the second motor driving module is connected to an output end of the first motor driving module;

[0009] A drive output module, wherein the first end of the drive output module is connected to the output end of the first motor drive module, and the second end of the drive output module is connected to the drive axle, wherein when the first motor drive module is in a gear shifting state, the second motor drive module is in a normal power output state, and when the second motor drive module is in a gear shifting state, the first motor drive module is in a normal power output state.

[0010] In one embodiment, the electric drive bridge device further includes a motor combination module, and the first motor drive module includes:

[0011] A first motor, wherein an output end of the first motor serves as an output end of the first motor driving module and is connected to an output end of the second motor driving module through the motor combining module;

[0012] a first output gear, wherein a first end of the first output gear is connected to an output end of the first motor;

[0013] A first gearbox, wherein an input end of the first gearbox is connected to a second end of the first output gear, and an output end of the first gearbox is connected to a first end of the drive output module, wherein the second end of the first output gear rotates synchronously with the first end of the first output gear.

[0014] In one embodiment, the first gearbox comprises:

[0015] First gearbox sleeve;

[0016] a first gearbox first gear, wherein a first end of the first gearbox first gear is connected to a second end of the first output gear through the first gearbox sliding sleeve, and the second end of the first gearbox first gear is connected to a first end of the drive output module, wherein the second end of the first gearbox first gear rotates synchronously with the first end of the first gearbox first gear;

[0017] The second gear of the first gearbox, the first end of the second gear of the first gearbox is connected to the second end of the first output gear through the first gearbox sleeve, the second end of the second gear of the first gearbox is connected to the first end of the drive output module, wherein the second end of the second gear of the first gearbox rotates synchronously with the first end of the second gear of the first gearbox.

[0018] In one embodiment, the second motor driving module includes:

[0019] A second motor, an output end of the second motor serving as an output end of the second motor driving module and connected to an output end of the first motor driving module;

[0020] a second output gear, a first end of the second output gear being connected to an output end of the second motor;

[0021] A second gearbox, an input end of the second gearbox is connected to the second end of the second output gear, and an output end of the second gearbox is connected to the first end of the drive output module, wherein the second end of the second output gear rotates synchronously with the first end of the second output gear.

[0022] In one embodiment, the second gearbox comprises:

[0023] Second gearbox sleeve;

[0024] a first gear of a second gearbox, wherein a first end of the first gear of the second gearbox is connected to a second end of the second output gear through a second gearbox sleeve, and the second end of the first gear of the second gearbox is connected to a first end of the drive output module, wherein the second end of the first gear of the second gearbox rotates synchronously with the first end of the first gear of the second gearbox;

[0025] The second gearbox second gear, the first end of the second gearbox second gear is connected to the second end of the second output gear through the second gearbox sleeve, the second end of the second gearbox second gear is connected to the first end of the drive output module, wherein the second end of the second gearbox second gear rotates synchronously with the first end of the second gearbox second gear.

[0026] In one embodiment, the drive output module includes:

[0027] A first meshing gear, wherein a first end of the first meshing gear is connected to an output end of the first motor driving module;

[0028] A second meshing gear, a first end of the second meshing gear being connected to an output end of the second motor driving module;

[0029] A differential, wherein the first input end of the differential is connected to the second end of the first meshing gear, the second input end of the differential is connected to the second end of the second meshing gear, and the output end of the differential is connected to the driving axle, wherein the first end of the first meshing gear and the second end of the first meshing gear, as well as the first end of the second meshing gear and the second end of the second meshing gear all rotate synchronously.

[0030] In one embodiment, the first motor driving module includes:

[0031] a first motor shaft, through which the first motor in the first motor driving module and the first output gear in the first motor driving module are connected;

[0032] The second motor driving module comprises:

[0033] A second motor shaft, the second motor in the second motor driving module and the second output gear in the second motor driving module are connected through the second motor shaft.

[0034] In addition, to achieve the above-mentioned purpose, the present application also provides a vehicle, which includes the above-mentioned electric drive axle device.

[0035] In one embodiment, the vehicle comprises:

[0036] A drive axle is connected to the right wheel, the left wheel and the output end of the differential in the electric drive axle device, wherein the drive axle, the first motor shaft of the first motor drive module in the electric drive axle device and the second motor shaft of the second motor drive module in the electric drive axle device overlap.

[0037] In one embodiment, the first motor drive module and the second motor drive module are symmetrically distributed on both sides of the drive axle, and the drive output modules in the electric drive axle device are symmetrically distributed on the drive axle.

[0038] The embodiment of the present application provides an electric drive bridge device, including a first motor drive module; a second motor drive module, the output end of the second motor drive module is connected to the output end of the first motor drive module; a drive output module, the first end of the drive output module is connected to the output end of the first motor drive module, and the second end of the drive output module is connected to the drive axle, wherein when the first motor drive module is in a gear shifting state, the second motor drive module is in a normal power output state, and when the second motor drive module is in a gear shifting state, the first motor drive module is in a normal power output state. By designing two motor drive modules in the electric drive bridge device, when one of the motor drive modules is in a gear shifting state, the other is in a normal power output state, thereby avoiding the phenomenon of power loss in the electric drive bridge of a single motor at the moment of gear shifting. This electric drive bridge device overcomes the problem of power loss in the electric drive bridge at the moment of gear shifting by designing two motor drive modules, thereby realizing that the electric drive bridge device has no power interruption when shifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A schematic diagram of the framework of the first embodiment of the electric drive axle device of the present application;

[0040] Figure 2 is an equivalent schematic diagram of a first motor drive module in the electric drive axle device of the present application;

[0041] Figure 3 An equivalent schematic diagram of the electric drive axle device of the present application;

[0042] Figure 4 This is an equivalent schematic diagram of the first embodiment of the electric drive axle device of the present application;

[0043] Figure 5 This is an equivalent schematic diagram of the second embodiment of the vehicle control method of the present application;

[0044] Figure 6 This is an equivalent schematic diagram of the third embodiment of the electric drive axle device of the present application;

[0045] Figure 7 This is an equivalent schematic diagram of the fourth embodiment of the electric drive axle device of the present application;

[0046] Figure 8 This is an equivalent schematic diagram of the fifth embodiment of the electric drive axle device of the present application;

[0047] Fig. 9This is an equivalent schematic diagram of the sixth embodiment of the electric drive axle device of the present application;

[0048] Fig.10 This is a schematic diagram of the device structure of the hardware operating environment involved in this application.

[0049] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings.

[0050] Description of Figure Numbers:

[0051] 10. First motor drive module; 20. Second motor drive module; 30. Drive output module; 40. Motor combination module; 200. Drive axle; 11. First motor; 12. First output gear; 1A. First gearbox sleeve; 1B. First gearbox first gear; 1C. First gearbox second gear; 21. Second motor; 22. Second output gear; 2A. Second gearbox sleeve; 2B. Second gearbox first gear; 2C. Second gearbox second gear; 32. First meshing gear; 31. Second meshing gear; 33. Differential; 210. Left wheel; 220. Right wheel; 13. First gearbox; 23. Second gearbox. DETAILED DESCRIPTION

[0052] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0053] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0054] The parallel shaft electric drive axle is the most commonly used electric drive axle device at present. Its design structure is relatively simple, but the entire electric drive axle device will have obvious gear shift interruption problems due to the single motor design, which greatly affects the user experience.

[0055] Therefore, based on the above shortcomings of the electric drive axle device, the electric drive axle device of the present application is proposed. The main solution of the embodiment of the present application is: designing two motor drive modules in the electric drive axle device to make the other one in a normal power output state when one of the motor drive modules is in a gear shifting state, thereby avoiding the phenomenon of power loss in the electric drive axle of a single motor at the moment of gear shifting. This electric drive axle device overcomes the problem of power loss in the electric drive axle at the moment of gear shifting by designing two motor drive modules, thereby achieving no power interruption of the electric drive axle device during gear shifting.

[0056] Based on this, the embodiment of the present application provides an electric drive bridge device, referring to Figure 1 , Figure 1 It is a schematic framework diagram of the first embodiment of the electric drive axle device of the present application.

[0057] Reference Figure 1 The present application provides an electric drive axle device, the electric drive axle device comprising:

[0058] A first motor driving module 10;

[0059] A second motor driving module 20, wherein an output end of the second motor driving module 20 is connected to an output end of the first motor driving module 10 via a motor combining module 40;

[0060] A driving output module 30, wherein a first end of the driving output module 30 is connected to an output end of the first motor driving module 10, and a second end of the driving output module 30 is connected to a driving axle 200, wherein when the first motor driving module 10 is in a gear shifting state, the second motor driving module 20 is in a normal power output state, and when the second motor driving module 20 is in a gear shifting state, the first motor driving module 10 is in a normal power output state.

[0061] In this embodiment, based on the problem of gear shift interruption in the parallel-axis electric drive axle, an electric drive axle device of the present application is proposed. The entire electric drive axle device includes a first motor drive module 10, a second motor drive module 20 and a drive output module 30. Because the output end of the drive output module 30 is connected to the output end of the first motor drive module 10 and the output end of the second motor drive module 20, that is, the drive output module 30 can accept the driving force from the first motor drive module 10 and / or the second motor drive module 20 to drive the drive axle 200, wherein the motor combining module 40 can be a gear or other combining device, etc., to combine the outputs of the first motor drive module 10 and the second motor drive module 20, that is, to use the motors in the two drive modules as a large motor to output a large driving force. At this time, when the first motor drive module 10 is in the shifting state, the second motor drive module 20 is in the normal power output state, and when the second motor drive module 20 is in the shifting state, the first motor drive module 10 is in the normal power output state, that is, one of the two motor drive modules is in the shifting state (in the shifting situation), and the other is in the normal power output state, thereby avoiding the problem of power interruption during shifting, thereby improving the user experience. It is worth noting that the first motor drive module 10 and the second motor drive module 20 are both driven by conventional motor drive circuits, which are not described in detail here, and the power transmission of the entire electric drive bridge device can be a motor shaft combined with a gear, such as the motor shaft is connected to the rotation position of the motor in the motor drive module, and the final output end is transmitted to the drive output module 30 through the gear connection method, and the drive output module 30 drives the drive axle 200 to rotate through the gear transmission method, and then drives the vehicle to rotate based on the rotation of the drive axle 200. The above is only a transmission method, and the transmission method between each module is not limited here. At this time, the design of two motor drive modules can overcome the problem of power loss of the electric drive axle at the moment of gear shifting, thereby achieving no power interruption of the electric drive axle device when shifting gears.

[0062] In this embodiment, the electric drive bridge device includes a first motor drive module; a second motor drive module, the output end of the second motor drive module is connected to the output end of the first motor drive module; a drive output module, the first end of the drive output module is connected to the output end of the first motor drive module, and the second end of the drive output module is connected to the drive axle, wherein when the first motor drive module is in a gear shifting state, the second motor drive module is in a normal power output state, and when the second motor drive module is in a gear shifting state, the first motor drive module is in a normal power output state. By designing two motor drive modules in the electric drive bridge device, when one of the motor drive modules is in a gear shifting state, the other is in a normal power output state, thereby avoiding the phenomenon of power loss in the electric drive bridge of a single motor at the moment of gear shifting. This electric drive bridge device overcomes the problem of power loss in the electric drive bridge at the moment of gear shifting by designing two motor drive modules, thereby realizing that the electric drive bridge device has no power interruption when shifting.

[0063] Further, based on the above-mentioned first embodiment of the present application, a second embodiment of the electric drive axle device of the present application is proposed, referring to Figure 2 , Figure 2 This is an equivalent schematic diagram of the first motor drive module in the electric drive bridge device of the present application. The electric drive bridge device further includes a motor combination module 40. The first motor drive module 10 includes:

[0064] A first motor 11, wherein an output end of the first motor 11 serves as a first end of the first motor driving module 10 and is connected to a first end of the second motor driving module 20 through a motor combining module 40;

[0065] A first output gear 12, a first end of the first output gear 12 is connected to an output end of the first motor 11;

[0066] The first gearbox 13 (not shown in the figure), the input end of the first gearbox 13 is connected to the second end of the first output gear 12, and the output end of the first gearbox 13 is connected to the first end of the drive output module 30, wherein the second end of the first output gear 12 rotates synchronously with the first end of the first output gear 12.

[0067] In one embodiment, the first gearbox 13 comprises:

[0068] First gearbox sliding sleeve 1A;

[0069] A first gearbox first gear 1B, a first end of the first gearbox first gear 1B is connected to a second end of the first output gear 12 through a first gearbox sliding sleeve 1A, and a second end of the first gearbox first gear 1B is connected to a first end of the drive output module 30, wherein the second end of the first gearbox first gear 1B rotates synchronously with the first end of the first gearbox first gear 1B;

[0070] The first gearbox second gear 1C, the first end of the first gearbox second gear 1C is connected to the second end of the first output gear 12 through the first gearbox sleeve 1A, the second end of the first gearbox second gear 1C is connected to the first end of the drive output module 30, wherein the second end of the first gearbox second gear 1C rotates synchronously with the first end of the first gearbox second gear 1C.

[0071] In this embodiment, the first motor drive module 10 includes a first motor 11, a first output gear 12 and a first gearbox 13, wherein the first motor 11 is used to provide rotational power, thereby driving the first output gear 12 to output, and the first gearbox 13 is used to perform speed change processing on the output driving force, such as selecting different gears based on the first gearbox 13, thereby controlling the speed of the final output to the drive output module 30 to be different. The principle of the first gearbox 13 is to control the first end of the first gearbox first gear 1B to be connected to the first end of the drive output module 30 based on the first gearbox slide 1A, or to control the first end of the first gearbox second gear 1C to be connected to the first end of the drive output module 30, or to control the first end of the first gearbox second gear 1C and the first end of the first gearbox first gear 1B to be disconnected from the first end of the drive output module 30, so it is feasible to specifically control which position to achieve the above functions, and it is not limited here. Here, the first gearbox 13 is described as having two gears (a plurality of gears may also be set, that is, the first gearbox sleeve 1A is controlled to connect the second end of the first output gear 12 to the gearbox gear corresponding to the gear, and the first gearbox sleeve 1A controls the first end of the first gearbox first gear 1B to connect with the second end of the first output gear 12 for description), that is, the first gearbox sleeve 1A may be operated to connect the first end of the first gearbox first gear 1B to the second end of the first output gear 12, and then the rotational kinetic energy of the second end of the first output gear 12 may be output to the drive output module 30 through the first gearbox first gear 1B; when the first gearbox sleeve 1A is operated to connect the first end of the first gearbox second gear 1C to the second end of the first output gear 12, the rotational kinetic energy of the second end of the first output gear 12 may be output to the drive output module 30 through the first gearbox second gear 1C. It is worth noting that the second end of the first gearbox first gear 1B rotates synchronously with the first end of the first gearbox first gear 1B (including the first end of other subsequent gears rotating synchronously with the second end) means that the same gear controls the first end and the second end to rotate synchronously, and it can also be that the first end and the second end of multiple concentric and fixed gears rotate synchronously, which is not limited here. The principle that the first gearbox 13 can control different gears is that the first gearbox first gear 1B and the first gearbox second gear 1C are designed with gears with different numbers of teeth for power transmission to achieve output at different speeds (generally reflected as gears). Of course, it can also be other control methods, and the control methods of different gears are not limited here. At this time, the axle 200 can be driven to rotate based on the first motor drive module 10 to achieve vehicle driving.

[0072] In one embodiment, based on the first embodiment and / or the second embodiment of the present application, a third embodiment of the electric drive axle device of the present application is proposed, referring to Figure 3 , Figure 3 This is an equivalent schematic diagram of the electric drive bridge device of the present application. The second motor drive module 20 includes:

[0073] A second motor 21, wherein an output end of the second motor 21 serves as a first end of the second motor driving module 20 and is connected to a first end of the first motor driving module 10;

[0074] A second output gear 22, a first end of the second output gear 22 is connected to an output end of the second motor 21;

[0075] A second gearbox 23 (not shown in the figure), the input end of the second gearbox 23 is connected to the second end of the second output gear 22, and the output end of the second gearbox 23 is connected to the first end of the drive output module 30, wherein the second end of the second output gear 22 rotates synchronously with the first end of the second output gear 22.

[0076] In one embodiment, the second gearbox 23 comprises:

[0077] Second gearbox sliding sleeve 2A;

[0078] A second gearbox first gear 2B, wherein a first end of the second gearbox first gear 2B is connected to a second end of the second output gear 22 through a second gearbox sleeve 2A, and a second end of the second gearbox first gear 2B is connected to a first end of the drive output module 30, wherein the second end of the second gearbox first gear 2B rotates synchronously with the first end of the second gearbox first gear 2B;

[0079] The second gearbox second gear 2C, the first end of the second gearbox second gear 2C is connected to the second end of the second output gear 22 through the second gearbox sleeve 2A, the second end of the second gearbox second gear 2C is connected to the first end of the drive output module 30, wherein the second end of the second gearbox second gear 2C rotates synchronously with the first end of the second gearbox second gear 2C.

[0080] In this embodiment, the second motor drive module 20 includes a second motor 21, a second output gear 22, and a second gearbox 23, wherein the functions of the internal components of the second motor drive module 20 are the same as those of the first motor drive module 10, and are not repeatedly defined herein. Here, the second gearbox 23 is also described as having two gears, that is, the first end of the second gearbox first gear 2B can be connected to the second end of the second output gear 22 by operating the second gearbox sleeve 2A, and then the rotational kinetic energy of the second end of the second output gear 22 can be output to the drive output module 30 through the second gearbox first gear 2B; when the second gearbox sleeve 2A is operated to connect the first end of the second gearbox second gear 2C to the second end of the second output gear 22, the rotational kinetic energy of the second end of the second output gear 22 can be output to the drive output module 30 through the second gearbox second gear 2C. At this time, the axle 200 can be driven to rotate based on the second motor drive module 20 to achieve vehicle driving.

[0081] In one embodiment, the entire electric drive axle device is powered by the first motor 11 and the second motor 21. The two motors can be driven separately or jointly (double motors with high power output) to achieve multi-mode coupling of the power system; at the same time, the first gearbox 13 and the second gearbox 23 can achieve gear shifting with different speed ratios and reduce speed and increase torque, and can be driven by a single gearbox gear or driven by two gears at the same time to meet the power output under different power requirements. Because two motors and the first gearbox 13 and the second gearbox 23 corresponding to each other are used at this time, when the first gearbox 13 is controlled, the second gearbox sleeve 2A in the second gearbox 23 can be controlled to connect to a gear, such as connecting the second gearbox first gear 2B to enter the gear of the second gearbox first gear 2B; connecting the second gearbox second gear 2C to enter the gear of the second gearbox second gear 2C, so that the gear shifting can be realized without power interruption, which will greatly improve the smoothness of the gear shifting during driving, and the driver will get a better driving experience.

[0082] Further, based on the first embodiment, the second embodiment and / or the third embodiment of the present application, a fourth embodiment of the electric drive axle device of the present application is proposed, referring to Figure 3 , Figure 3 This is a schematic diagram of the framework of the third embodiment of the electric drive axle device of the present application. The drive output module 30 includes:

[0083] A first meshing gear 32, a first end of the first meshing gear 32 is connected to a second end of the first motor driving module 10;

[0084] A second meshing gear 31, a first end of the second meshing gear 31 is connected to a second end of the second motor driving module 20;

[0085] The differential 33, the first input end of the differential 33 is connected to the second end of the first meshing gear 32, the second input end of the differential 33 is connected to the second end of the second meshing gear 31, and the output end of the differential 33 is connected to the driving axle 200, wherein the first end of the first meshing gear 32 and the second end of the first meshing gear 32, and the first end of the second meshing gear 31 and the second end of the second meshing gear 31 all rotate synchronously.

[0086] In one embodiment, the first motor driving module 10 includes:

[0087] A first motor shaft, through which the first motor 11 in the first motor driving module 10 and the first output gear 12 in the first motor driving module 10 are connected;

[0088] The second motor driving module 20 includes:

[0089] The second motor shaft, the second motor 21 in the second motor driving module 20 and the second output gear 22 in the second motor driving module 20 are connected through the second motor shaft.

[0090] In this embodiment, the drive output module 30 includes a first meshing gear 32, a second meshing gear 31 and a differential 33. The driving force of the second motor drive module 20 can be output to the drive axle 200 through the second meshing gear 31 and the differential 33. The driving force of the first motor drive module 10 can be output to the drive axle 200 through the first meshing gear 32 and the differential 33, thereby driving the wheels to rotate. The first meshing gear 32, the second meshing gear 31 and the differential 33 can all use existing commonly used meshing gears and gearboxes, which are not limited here. The driving output module 30 can selectively output the driving force of the first motor drive module 10 and / or the second motor drive module 20. At the same time, the first motor drive module 10 and the second motor drive module 20 may each include a motor shaft, and the driving force of the motor is output through the motor shaft. At this time, the two motor shafts can be designed to overlap with the drive axle 200, thereby reducing the mass distribution of the entire electric drive bridge device. At the same time, the first motor drive module 10 and the second motor drive module 20 are symmetrically distributed along the drive axle 200, thereby greatly reducing the wear deviation of the entire electric drive bridge device caused by uneven mass distribution.

[0091] In one embodiment, based on the above composition of the first motor drive module 10, the second motor drive module 20 and the drive output module 30, a schematic diagram of the gear control scenario of the entire electric drive bridge device is proposed, which can be referred to as Figure 4 , Figure 4This is an equivalent schematic diagram of the first embodiment of the electric drive axle device of this application. The figure shows a scene diagram of the second motor drive module 20 performing drive control alone (the bold part in the figure is the direction of the drive force). At this time, the second motor 21 outputs the drive force to the second gearbox 23 through the second output gear 22, and controls the second gearbox sleeve 2A in the second gearbox 23 to select the second gearbox first gear 2B for output, and transmits the final output power to the drive axle 200 through the second meshing gear 31 and the differential 33, and finally realizes vehicle drive. Please refer to Figure 5 , Figure 5 This is an equivalent schematic diagram of the second embodiment of the vehicle control method of the present application. The figure also shows a scene diagram of the second motor drive module 20 performing drive control alone. At this time, the second motor 21 outputs the driving force to the second gearbox 23 through the second output gear 22, and controls the second gearbox sleeve 2A in the second gearbox 23 to select the second gearbox second gear 2C for output, and transmits the final output power to the drive axle 200 through the second meshing gear 31 and the differential 33, and finally realizes vehicle driving. Please refer to Figure 6 , Figure 6 This is an equivalent schematic diagram of the third embodiment of the electric drive axle device of the present application. The figure shows a scene diagram of the first motor drive module 10 performing drive control alone. At this time, the first motor 11 outputs the driving force to the first gearbox 13 through the first output gear 12, and controls the first gearbox sleeve 1A in the first gearbox 13 to select the first gearbox first gear 1B for output, and transmits the final output power to the drive axle 200 through the second meshing gear 31 and the differential 33, and finally realizes vehicle driving. Please refer to Figure 7 , Figure 7 This is an equivalent schematic diagram of the fourth embodiment of the electric drive axle device of the present application. The figure also shows a scene diagram of the first motor drive module 10 performing drive control alone. At this time, the first motor 11 outputs the driving force to the first gearbox 13 through the first output gear 12, and controls the first gearbox slide 1A in the first gearbox 13 to select the first gearbox second gear 1C for output, and transmits the final output power to the drive axle 200 through the second meshing gear 31 and the differential 33, and finally realizes vehicle driving. Please refer to Figure 8 , Figure 8This is an equivalent schematic diagram of the fifth embodiment of the electric drive axle device of the present application, which shows a scene in which the first motor drive module 10 and the second motor drive module 20 are driven simultaneously. At this time, the first motor 11 in the first motor drive module 10 and the second motor 21 in the second motor drive module 20 output the driving force of the two motors through the motor combination module 40. At this time, the two motors can be output to their respective gearboxes through their respective output gears, such as the first motor 11 outputs the driving force to the first gearbox 13 through the first output gear 12, and controls the first gearbox sleeve 1A to select the first gearbox 13. The first gear of the gearbox 1B is output, and at the same time, the second motor 21 outputs the driving force to the second gearbox 23 through the second output gear 22, and controls the second gearbox sleeve 2A in the second gearbox 23 to select the second gearbox second gear 2C for output, and finally transmits the output power of the two gearboxes to the drive axle 200 through the second meshing gear 31, the first meshing gear 32 and the differential 33, so that the two motors can be controlled to output at the same time, thereby greatly improving the output torque, such as the scene in which the two motors output in the form of climbing, thereby greatly expanding the functionality of the electric drive axle device. Fig. 9 , Fig. 9 This is an equivalent schematic diagram of the sixth embodiment of the electric drive axle device of the present application. The figure shows a scene in which the first motor drive module 10 and the second motor drive module 20 are driven simultaneously. At this time, the first motor 11 in the first motor drive module 10 and the second motor 21 in the second motor drive module 20 output the driving force of the two motors through the motor combination module 40. At this time, the two motors can output to the corresponding gearbox through one of the output gears. For example, the first motor drive module 10 is selected for output, and the first motor 11 outputs the driving force to the first gearbox 13 through the first output gear 12, and the first gearbox slide 1A is controlled in the first gearbox 13 to select the first gearbox first gear 1B for output, and the second motor 11 can be directly output. It is worth noting that the speed ratio of the first gearbox 13 and the second gearbox 23 of the electric drive axle device can adopt the same speed ratio or different speed ratios. At this time, the number of gearbox speed ratios can design the entire electric drive axle device into four gears or six gears, thereby greatly improving the functionality of the electric drive axle device.

[0092] Based on the above embodiments of the electric drive axle device, a vehicle is proposed. The vehicle includes the above electric drive axle device.

[0093] In this embodiment, the above vehicle designs two motor drive modules in the electric drive axle device so that when one of the motor drive modules is in the gear shifting state, the other is in the normal power output state, thereby avoiding the phenomenon of power loss in the electric drive axle of a single motor at the moment of gear shifting. This electric drive axle device overcomes the problem of power loss in the electric drive axle at the moment of gear shifting by designing two motor drive modules, thereby achieving no power interruption in the electric drive axle device during gear shifting.

[0094] Based on the first embodiment of the vehicle above, a second embodiment of the vehicle of the present application is proposed, and the vehicle includes:

[0095] The drive axle 200 is connected to the right wheel 220, the left wheel 210 and the output end of the differential 33 in the electric drive bridge device, wherein the drive axle 200, the first motor shaft of the first motor drive module 10 in the electric drive bridge device and the second motor shaft of the second motor drive module 20 in the electric drive bridge device overlap.

[0096] Specifically, the first motor driving module 10 and the second motor driving module 20 are symmetrically distributed on both sides of the driving axle 200 , and the driving output modules 30 in the electric drive axle device are symmetrically distributed on the driving axle 200 .

[0097] In this embodiment, the general electric drive axle is arranged in parallel along the axle, which will make the whole bridge wider in the Y direction (i.e. from the front to the rear of the vehicle), especially when a larger power is required, such as when there are two drive motors, the two motors are placed on both sides of the axle, and the whole bridge volume and weight are larger. Due to the unique structural characteristics of the electric drive axle, the weight is too heavy, which has a great impact on the strength of the axle and the weight of the whole vehicle. At this time, the electric drive bridge device is coaxially designed with the drive axle 200, and the modules in the entire electric drive bridge device will achieve axial symmetry to the maximum extent (that is, the first motor drive module 10 and the second motor drive module 20 are symmetrically distributed on both sides of the drive axle 200, and the drive output module 30 in the electric drive bridge device is symmetrically distributed on the drive axle 200), so that the center of gravity of the entire electric drive bridge device will fall on the drive axle 200, thereby improving the service life of each component and avoiding wear deviation caused by uneven mass distribution. At the same time, the coaxial electric drive bridge (that is, the drive axle 200, the first motor shaft of the first motor drive module 10 in the electric drive bridge device and the second motor shaft of the second motor drive module 20 in the electric drive bridge device coincide with each other) is more compact in structure and smaller in overall size, leaving more space for components such as batteries.

[0098] In one embodiment, a vehicle control method is also provided (i.e., the electric drive axle device and the vehicle may also be the electric drive axle device, the vehicle and the vehicle control method). The vehicle control method is applied to a vehicle including the electric drive axle device, and the electric drive axle device is composed of the above-mentioned embodiment. In this case, the vehicle control method includes:

[0099] Obtaining the shifting requirements of the electric drive axle device;

[0100] When the gear shift demand matches the preset gear shift start state, the target motor drive module is controlled to be in a normal power output state.

[0101] In this embodiment, by obtaining the shift demand of the electric drive axle device, that is, whether to control the information of the transmission shift, the status of the two transmissions can be directly obtained, and the shift demand of the vehicle can also be obtained, such as the switch or handle information of the gear position (it can also be judged in combination with the pedal, vehicle speed and throttle information), etc., and then when the shift demand matches the preset shift start state, the shift start state refers to the defined shift start state, such as the movement of the handle when the user shakes from the 3rd gear to the 4th gear, etc., the target motor drive module will be determined, and the target motor drive module refers to the motor drive module of the two motor drive modules that is not in the shift. If the first motor drive module is in the shift start state, the second motor drive module is the target motor drive module, and then the second motor drive module can be in the power output state, wherein the power output state can be to select a suitable custom power output, or to select a power output that is most suitable for the current situation, which is not limited here, and then the target motor drive module can be controlled to be in a normal power output state to avoid the situation where the electric drive axle has power loss at the moment of shifting, and then the electric drive axle device can achieve no power interruption during shifting. Furthermore, the entire control process can also be to determine the corresponding transmission connection status in the preset gear table based on the gear shifting demand, and then control the transmission based on the transmission connection status, wherein the preset gear table refers to a table that defines different gears and transmission connection states, and the transmission connection state refers to selecting which gear of the transmission to connect. If both transmissions have two gears, then the combined control of the two transmissions will have four gears. Combined with the two gears of the single transmission itself, eight gears can be controlled, thereby greatly improving the functionality of the electric drive axle device.

[0102] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the vehicle of the present application. More simple transformations based on this technical concept are all within the scope of protection of the present application.

[0103] The present application provides a car (specifically, it can be a transmission controller on the car), the car includes: at least one processor; and a memory that is communicatively connected to the at least one processor; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the vehicle control method in the above-mentioned embodiment one.

[0104] Reference below Fig.10 , which shows a schematic diagram of the structure of a car suitable for implementing the embodiment of the present application. The car in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Fig.10 The car shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0105] like Fig.10 As shown, the automobile may include a processing device 1001 (e.g., a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM: Random Access Memory) 1004. In RAM1004, various programs and data required for the operation of the automobile are also stored. The processing device 1001, ROM1002, and RAM1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following devices can be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the car to communicate with other devices wirelessly or by wire to exchange data. Although the figure shows a car with various devices, it should be understood that it is not required to implement or have all the devices shown. More or fewer devices can be implemented or have alternatively.

[0106] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0107] The automobile provided by the present application adopts the vehicle control method in the above embodiment, which can solve the technical problem of how to achieve no power interruption when the electric drive axle device is shifted. Compared with the prior art, the beneficial effects of the automobile provided by the present application are the same as the beneficial effects of the vehicle control method provided by the above embodiment, and the other technical features of the automobile are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0108] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0109] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0110] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, and the computer-readable program instructions are used to execute the vehicle control method in the above-mentioned embodiment.

[0111] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor devices, apparatuses or components, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution device, apparatus or component. The program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0112] The computer-readable storage medium may be included in the automobile, or may exist independently without being installed in the automobile.

[0113] The computer-readable storage medium carries one or more programs. When the one or more programs are executed by the automobile, the automobile:

[0114] Obtaining the shifting requirements of the electric drive axle device;

[0115] When the gear shift demand matches the preset gear shift start state, the target motor drive module is controlled to be in a normal power output state.

[0116] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0117] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the device, method and computer program product according to various embodiments of the present application. In this regard, each box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based device that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0118] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0119] The readable storage medium provided in the present application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned vehicle control method, and can solve the technical problem of how to achieve no power interruption when the electric drive axle device is shifted. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in the present application are the same as the beneficial effects of the vehicle control method provided in the above-mentioned embodiment, and will not be repeated here.

[0120] The present application also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the steps of the vehicle control method as described above are implemented.

[0121] The computer program product provided by the present application can solve the technical problem of how to achieve no power interruption when the electric drive axle device is shifted. Compared with the prior art, the beneficial effects of the computer program product provided by the present application are the same as the beneficial effects of the vehicle control method provided by the above embodiment, which will not be repeated here.

[0122] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. An electric drive axle device, characterized in that: The electric drive axle device comprises: A first motor drive module; a second motor driving module, wherein an output end of the second motor driving module is connected to an output end of the first motor driving module; A drive output module, wherein the first end of the drive output module is connected to the output end of the first motor drive module, and the second end of the drive output module is connected to the drive axle, wherein when the first motor drive module is in a gear shifting state, the second motor drive module is in a normal power output state, and when the second motor drive module is in a gear shifting state, the first motor drive module is in a normal power output state.

2. The electric drive axle device according to claim 1, characterized in that: The electric drive bridge device further includes a motor combination module, and the first motor drive module includes: A first motor, wherein an output end of the first motor serves as an output end of the first motor driving module and is connected to an output end of the second motor driving module through the motor combining module; a first output gear, wherein a first end of the first output gear is connected to an output end of the first motor; A first gearbox, wherein an input end of the first gearbox is connected to a second end of the first output gear, and an output end of the first gearbox is connected to a first end of the drive output module, wherein the second end of the first output gear rotates synchronously with the first end of the first output gear.

3. The electric drive axle device according to claim 2, characterized in that: The first gearbox comprises: First gearbox sliding sleeve; a first gearbox first gear, wherein a first end of the first gearbox first gear is connected to a second end of the first output gear through the first gearbox sliding sleeve, and the second end of the first gearbox first gear is connected to a first end of the drive output module, wherein the second end of the first gearbox first gear rotates synchronously with the first end of the first gearbox first gear; The second gear of the first gearbox, the first end of the second gear of the first gearbox is connected to the second end of the first output gear through the first gearbox sleeve, the second end of the second gear of the first gearbox is connected to the first end of the drive output module, wherein the second end of the second gear of the first gearbox rotates synchronously with the first end of the second gear of the first gearbox.

4. The electric drive axle device according to claim 1, characterized in that: The second motor driving module comprises: A second motor, an output end of the second motor serving as an output end of the second motor driving module and connected to an output end of the first motor driving module; a second output gear, a first end of the second output gear being connected to an output end of the second motor; A second gearbox, an input end of the second gearbox is connected to the second end of the second output gear, and an output end of the second gearbox is connected to the first end of the drive output module, wherein the second end of the second output gear rotates synchronously with the first end of the second output gear.

5. The electric drive axle device according to claim 4, characterized in that: The second gearbox comprises: Second gearbox sleeve; a first gear of a second gearbox, wherein a first end of the first gear of the second gearbox is connected to a second end of the second output gear through a second gearbox sleeve, and the second end of the first gear of the second gearbox is connected to a first end of the drive output module, wherein the second end of the first gear of the second gearbox rotates synchronously with the first end of the first gear of the second gearbox; The second gearbox second gear, the first end of the second gearbox second gear is connected to the second end of the second output gear through the second gearbox sleeve, the second end of the second gearbox second gear is connected to the first end of the drive output module, wherein the second end of the second gearbox second gear rotates synchronously with the first end of the second gearbox second gear.

6. The electric drive axle device according to claim 1, characterized in that: The drive output module comprises: A first meshing gear, wherein a first end of the first meshing gear is connected to an output end of the first motor driving module; A second meshing gear, a first end of the second meshing gear being connected to an output end of the second motor driving module; A differential, wherein the first input end of the differential is connected to the second end of the first meshing gear, the second input end of the differential is connected to the second end of the second meshing gear, and the output end of the differential is connected to the driving axle, wherein the first end of the first meshing gear and the second end of the first meshing gear, as well as the first end of the second meshing gear and the second end of the second meshing gear all rotate synchronously.

7. The electric drive axle device according to any one of claims 1 to 6, characterized in that: The first motor driving module comprises: a first motor shaft, through which the first motor in the first motor driving module and the first output gear in the first motor driving module are connected; The second motor driving module comprises: A second motor shaft, the second motor in the second motor driving module and the second output gear in the second motor driving module are connected through the second motor shaft.

8. A vehicle, characterized in that: The vehicle comprises the electric drive axle device according to any one of claims 1 to 7.

9. The vehicle according to claim 8, characterized in that The vehicle comprises: A drive axle is connected to the right wheel, the left wheel and the output end of the differential in the electric drive axle device, wherein the drive axle, the first motor shaft of the first motor drive module in the electric drive axle device and the second motor shaft of the second motor drive module in the electric drive axle device overlap.

10. The vehicle according to claim 9, characterized in that The first motor drive module and the second motor drive module are symmetrically distributed on both sides of the drive axle, and the drive output modules in the electric drive axle device are symmetrically distributed on the drive axle.

Images