Electric drive axle arrangement and vehicle

Abstract

The application discloses an electric drive axle device and a vehicle, relates to the technical field of drive axles, and discloses an electric drive axle device, which comprises a first motor drive module, a second motor drive module, a drive output module, wherein the output end of the second motor drive module is connected with the output end of the first motor drive module; the first end of the drive output module is connected with the output end of the first motor drive module; the second end of the drive output module is connected with a drive axle; 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. The application realizes no power interruption of the electric drive axle device during gear shifting.

Description

Technical Field

[0001] This application relates to the field of drive axle technology, and more particularly to an electric drive axle device and vehicle. Background Technology

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

[0003] Traditional electric drive axle devices drive vehicles using a single-motor electric drive axle. However, this type of electric drive axle device suffers from a shift interruption during gear shifts, meaning there is a loss of power at the moment of gear shift. Therefore, there is an urgent need for a new type of electric drive axle device that can achieve uninterrupted power during gear shifts.

[0004] The above content is only used to help understand the technical solution of this application and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main objective of this application is to provide an electric drive axle device and vehicle, which aims to solve the technical problem of how to achieve uninterrupted power during gear shifting in the electric drive axle device.

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

[0007] First motor drive module;

[0008] A second motor drive module, the output terminal of which is connected to the output terminal of the first motor drive module;

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

[0010] In one embodiment, the electric drive axle device further includes a motor coupling module, wherein the first motor drive module includes:

[0011] The first motor has its output terminal serving as the output terminal of the first motor drive module, and is connected to the output terminal of the second motor drive module via the motor coupling module.

[0012] A first output gear, the first end of which is connected to the output end of the first motor;

[0013] A first gearbox, wherein the input end of the first gearbox is connected to the second end of the first output gear, and the output end of the first gearbox is connected to the 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 includes:

[0015] First gearbox sliding sleeve;

[0016] The first gear of the first gearbox has a first end connected to the second end of the first output gear through the first gearbox sliding sleeve. The second end of the first gear is connected to the first end of the drive output module. The second end of the first gear rotates synchronously with the first end of the first gear.

[0017] The first gearbox has a second gear, the first end of which is connected to the second end of the first output gear via the first gearbox sliding sleeve. The second end of the first gearbox is connected to the first end of the drive output module. The second end of the first gearbox rotates synchronously with the first end of the first gearbox.

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

[0019] The second motor has its output terminal serving as the output terminal of the second motor drive module and is connected to the output terminal of the first motor drive module.

[0020] The second output gear, the first end of which is connected to the output end of the second motor;

[0021] The second gearbox has its input end connected to the second end of the second output gear, and its output end 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 includes:

[0023] Second gearbox sliding sleeve;

[0024] The first gear of the second gearbox has its first end connected to the second end of the second output gear via the second gearbox sliding sleeve. The second end of the first gear of the second gearbox is connected to the first end of the drive output module. 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 gear of the second gearbox has a first end connected to the second end of the second output gear via the second gearbox sliding sleeve. The second end of the second gear of the second gearbox is connected to the first end of the drive output module. The second end of the second gear of the second gearbox rotates synchronously with the first end of the second gear of the second gearbox.

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

[0027] The first meshing gear, the first end of the first meshing gear is connected to the output end of the first motor drive module;

[0028] The second meshing gear, the first end of the second meshing gear is connected to the output end of the second motor drive module;

[0029] The differential has a first input end connected to the second end of the first meshing gear, a second input end connected to the second end of the second meshing gear, and an output end connected to the drive axle. 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 drive module includes:

[0031] The first motor shaft connects the first motor in the first motor drive module and the first output gear in the first motor drive module.

[0032] The second motor drive module includes:

[0033] The second motor shaft connects the second motor in the second motor drive module and the second output gear in the second motor drive module.

[0034] In addition, to achieve the above objectives, this application also provides a vehicle that includes the aforementioned electric drive axle device.

[0035] In one embodiment, the vehicle includes:

[0036] The 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 coincide.

[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 module in the electric drive axle is symmetrically distributed on the drive axle.

[0038] This application provides an electric drive axle device, including a first motor drive module; a second motor drive module, the output terminal of which is connected to the output terminal of the first motor drive module; and a drive output module, the first end of which is connected to the output terminal of the first motor drive module, and the second end of which is connected to the drive axle. When the first motor drive module is in a shifting state, the second motor drive module is in a normal power output state; conversely, when the second motor drive module is in a shifting state, the first motor drive module is in a normal power output state. By designing two motor drive modules in the electric drive axle device, when one motor drive module is in a shifting state, the other is in a normal power output state, thereby avoiding the power loss phenomenon that occurs during gear shifting in a single-motor electric drive axle. This electric drive axle device overcomes the problem of power loss during gear shifting by designing two motor drive modules, thus achieving uninterrupted power during gear shifting. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the frame of the first embodiment of the electric drive axle device of this application;

[0040] Figure 2 This is an equivalent schematic diagram of the first motor drive module in the electric drive bridge device of this application;

[0041] Figure 3 This is an equivalent schematic diagram of the electric drive axle device of this application;

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

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

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

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

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

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

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

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

[0050] Explanation of icon numbers:

[0051] 10. First motor drive module; 20. Second motor drive module; 30. Drive output module; 40. Motor engagement 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 Implementation

[0052] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0053] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0054] Parallel-axis electric drive axles are currently the most widely used electric drive axle devices. Their design structure is relatively simple, but the entire electric drive axle device suffers from significant gear shifting interruptions due to its single-motor design, which greatly affects the user experience.

[0055] Therefore, based on the shortcomings of the above-mentioned electric drive axle devices, the electric drive axle device of this application is proposed. The main solution of the embodiments of this application is to design two motor drive modules in the electric drive axle device so that when one motor drive module is in the shifting state, the other is in the normal power output state, thereby avoiding the phenomenon of power loss at the moment of shifting in a single-motor electric drive axle. This electric drive axle device overcomes the problem of power loss at the moment of shifting by designing two motor drive modules, thereby achieving uninterrupted power output during shifting.

[0056] Based on this, the embodiments of this application provide an electric drive bridge device, referring to... Figure 1 , Figure 1 This is a schematic diagram of the frame of the first embodiment of the electric drive axle device of this application.

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

[0058] First motor drive module 10;

[0059] The output of the second motor drive module 20 is connected to the output of the first motor drive module 10 through the motor coupling module 40.

[0060] The drive output module 30 has a first end connected to the output end of the first motor drive module 10 and a second end connected to the drive axle 200. When the first motor drive module 10 is in a shifting state, the second motor drive module 20 is in a normal power output state, and when the second motor drive module 20 is in a shifting state, the first motor drive module 10 is in a normal power output state.

[0061] In this embodiment, based on the problem of gear shifting interruption in the parallel-axis electric drive axle, the electric drive axle device of this 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. Since the output terminal of the drive output module 30 is connected to the output terminal of the first motor drive module 10 and the output terminal of the second motor drive module 20, the drive output module 30 can receive driving force from the first motor drive module 10 and / or the second motor drive module 20 to drive the drive axle 200. The motor coupling module 40 can be a gear or other coupling device to combine the outputs of the first motor drive module 10 and the second motor drive module 20, that is, the motors in the two drive modules are combined into one 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, if one of the two motor drive modules is in the shifting state, the other is in the normal power output state, thus avoiding the problem of power interruption during shifting and improving the user experience. It is worth noting that both the first motor drive module 10 and the second motor drive module 20 use conventional motor drive circuits for driving, which will not be described in detail here. The power transmission of the entire electric drive axle device can be a combination of motor shaft and gears. For example, 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. The drive output module 30 then drives the drive axle 200 to rotate through the gear transmission, and the rotation of the drive axle 200 drives the vehicle to rotate. The above is only one transmission method, and the transmission method between the modules is not limited here. At this point, the design of two motor drive modules can overcome the problem of power loss during gear shifting of the electric drive axle, thus achieving uninterrupted power during gear shifting of the electric drive axle device.

[0062] In this embodiment, the electric drive axle device includes a first motor drive module; a second motor drive module, the output terminal of which is connected to the output terminal of the first motor drive module; and a drive output module, the first end of which is connected to the output terminal of the first motor drive module, and the second end of which is connected to the drive axle. When the first motor drive module is in a shifting state, the second motor drive module is in a normal power output state; conversely, when the second motor drive module is in a shifting state, the first motor drive module is in a normal power output state. By designing two motor drive modules in the electric drive axle device, when one motor drive module is in a shifting state, the other is in a normal power output state, thereby avoiding the power loss phenomenon that occurs during gear shifting in a single-motor electric drive axle. This electric drive axle device overcomes the problem of power loss during gear shifting by designing two motor drive modules, thus achieving uninterrupted power during gear shifting.

[0063] Furthermore, based on the first embodiment of this application described above, a second embodiment of the electric drive axle device of this application is proposed, with reference to... Figure 2 , Figure 2 This is an equivalent schematic diagram of the first motor drive module in the electric drive axle device of this application. The electric drive axle device also includes a motor coupling module 40. The first motor drive module 10 includes:

[0064] The first motor 11, the output end of the first motor 11 serves as the first end of the first motor drive module 10, and is connected to the first end of the second motor drive module 20 through the motor connection module 40;

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

[0066] The first gearbox 13 (not shown in the figure) has its input end connected to the second end of the first output gear 12 and its output end connected to the first end of the drive output module 30. 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 includes:

[0068] First gearbox sliding sleeve 1A;

[0069] The first gear 1B of the first gearbox has its first end connected to the second end of the first output gear 12 via the first gearbox sliding sleeve 1A. The second end of the first gear 1B is connected to the first end of the drive output module 30. The second end of the first gear 1B rotates synchronously with the first end of the first gear 1B.

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

[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. The first motor 11 provides rotational power to drive the first output gear 12 to output power. The first gearbox 13 is used to change the speed of the output driving force. For example, by selecting different gears based on the first gearbox 13, the rotational speed of the final output to the drive output module 30 can be controlled to be different. The principle of the first gearbox 13 is to control the first end of the first gear 1B of the first gearbox to be connected to the first end of the drive output module 30, or to control the first end of the second gear 1C of the first gearbox to be connected to the first end of the drive output module 30, or to control the first end of the second gear 1C and the first end of the first gear 1B of the first gearbox to be disconnected from the first end of the drive output module 30. Therefore, it is feasible to control the specific position to achieve the above functions, and no limitation is made here. This explanation uses the first gearbox 13 as an example with two gears (multiple gears can also be set, i.e., by controlling the first gearbox sliding sleeve 1A to connect the second end of the first output gear 12 to the gearbox gear corresponding to the gear, and the explanation is based on the first gearbox sliding sleeve 1A controlling the connection between the first end of the first gearbox first gear 1B and the second end of the first output gear 12). That is, by operating the first gearbox sliding sleeve 1A, the first end of the first gearbox first gear 1B is connected to the second end of the first output gear 12, and the rotational kinetic energy of the second end of the first output gear 12 can be output to the drive output module 30 through the first gearbox first gear 1B; when the first gearbox sliding 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 can be output to the drive output module 30 through the first gearbox second gear 1C. It is worth noting that the synchronous rotation of the second end of the first gear 1B of the first gearbox with the first end of the first gear 1B (including the synchronous rotation of the first and second ends of subsequent gears) means that the same gear controls the synchronous rotation of the first and second ends. It could also be multiple concentric and fixed gears with their first and second ends rotating synchronously; this is not limited here. The principle behind the first gearbox 13's ability to control different gears lies in the fact that the first gear 1B and the second gear 1C of the first gearbox are designed with different numbers of teeth for power transmission, thereby achieving different speeds (generally reflected in gear positions). Of course, other control methods are also possible; the control method for different gear positions is not limited here. At this point, the axle 200 can be driven to rotate based on the first motor drive module 10 to achieve vehicle drive.

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

[0073] The output end of the second motor 21 serves as the first end of the second motor drive module 20 and is connected to the first end of the first motor drive module 10.

[0074] The second output gear 22, the first end of which is connected to the output end of the second motor 21;

[0075] The second gearbox 23 (not shown in the figure) has its input end connected to the second end of the second output gear 22 and its output end connected to the first end of the drive output module 30. 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 includes:

[0077] Second gearbox sliding sleeve 2A;

[0078] The first end of the first gear 2B of the second gearbox is connected to the second end of the second output gear 22 through the second gearbox sliding sleeve 2A. The second end of the first gear 2B of the second gearbox is connected to the first end of the drive output module 30. The second end of the first gear 2B of the second gearbox rotates synchronously with the first end of the first gear 2B of the second gearbox.

[0079] The second gear 2C of the second gearbox has its first end connected to the second end of the second output gear 22 via the second gearbox sliding sleeve 2A. The second end of the second gear 2C is connected to the first end of the drive output module 30. The second end of the second gear 2C rotates synchronously with the first end of the 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. The internal components of the second motor drive module 20 have the same function as those of the first motor drive module 10, and will not be described again here. The second gearbox 23 is also described here with two gears. By operating the second gearbox sliding sleeve 2A, the first end of the first gear of the second gearbox 2B is connected to the second end of the second output gear 22, thereby transmitting the rotational kinetic energy of the second end of the second output gear 22 to the drive output module 30 via the first gear of the second gearbox 2B. Similarly, by operating the second gearbox sliding sleeve 2A, the first end of the second gear of the second gearbox 2C is connected to the second end of the second output gear 22, thereby transmitting the rotational kinetic energy of the second end of the second output gear 22 to the drive output module 30 via the second gear of the second gearbox 2C. At this point, the second motor drive module 20 can drive the axle 200 to rotate, thus achieving vehicle drive.

[0081] In one embodiment, the entire electric drive axle device is powered by a first motor 11 and a second motor 21. The two motors can be driven individually or in combination (dual motors combined for high power output), achieving multi-mode coupling of the power system. Simultaneously, the first gearbox 13 and the second gearbox 23 can achieve gear shifting with different speed ratios and reduce speed while increasing torque. They can be driven by a single gear or both gears simultaneously to meet different power output requirements. Because two motors and their corresponding first and second gearboxes 13 and 23 are used, when the first gearbox 13 is in gear control, the second gearbox sleeve 2A in the second gearbox 23 can be controlled to connect to a gear, such as connecting to the first gear 2B to engage the first gear; or connecting to the second gear 2C to engage the second gear. This allows for seamless gear shifting without power interruption, significantly improving shift smoothness during driving and providing the driver with a better driving experience.

[0082] Furthermore, based on the first, second, and / or third embodiments of this application described above, a fourth embodiment of the electric drive axle device of this application is proposed, with reference to... Figure 3 , Figure 3 This is a schematic diagram of the framework of the third embodiment of the electric drive axle device of this application. The drive output module 30 includes:

[0083] The first meshing gear 32 has its first end connected to the second end of the first motor drive module 10;

[0084] The second meshing gear 31 has its first end connected to the second end of the second motor drive module 20.

[0085] Differential 33 has its first input end connected to the second end of the first meshing gear 32, its second input end connected to the second end of the second meshing gear 31, and its output end connected to the drive axle 200. The first end of the first meshing gear 32 and the second end of the first meshing gear 32, as well as 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 drive module 10 includes:

[0087] The first motor shaft connects the first motor 11 in the first motor drive module 10 and the first output gear 12 in the first motor drive module 10.

[0088] The second motor drive module 20 includes:

[0089] The second motor shaft connects the second motor 21 in the second motor drive module 20 and the second output gear 22 in the second motor drive module 20.

[0090] In this embodiment, the drive output module 30 includes a first engagement gear 32, a second engagement gear 31, and a differential 33. The second engagement gear 31 and the differential 33 can output the driving force of the second motor drive module 20 to the drive axle 200, and the first engagement gear 32 and the differential 33 can output the driving force of the first motor drive module 10 to the drive axle 200, thereby driving the wheels to rotate. The first engagement gear 32, the second engagement gear 31, and the differential 33 can all use existing common engagement gears and gearboxes, which are not limited here. The drive output module 30 can selectively output the driving force of the first motor drive module 10 and / or the second motor drive module 20. Meanwhile, both the first motor drive module 10 and the second motor drive module 20 can include a motor shaft, through which the driving force of the motor is output. At this time, the two motor shafts can be designed to coincide with the drive axle 200, thereby reducing the mass distribution of the entire electric drive axle 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 axle device caused by uneven mass distribution.

[0091] In one embodiment, based on the composition of the first motor drive module 10, the second motor drive module 20, and the drive output module 30 described above, a schematic diagram of the gear control scenario for the entire electric drive axle device is presented, which can be referred to. Figure 4 , Figure 4This is an equivalent schematic diagram of the first embodiment of the electric drive axle device of this application. The diagram shows a scenario where the second motor drive module 20 performs drive control independently (the bolded part in the diagram indicates the direction of the driving force). 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 sliding sleeve 2A within the second gearbox 23 to select the first gear 2B of the second gearbox for output. The final output power is then transmitted to the drive axle 200 through the second meshing gear 31 and the differential 33, ultimately achieving vehicle drive. (See also...) Figure 5 , Figure 5 This is an equivalent schematic diagram of the second embodiment of the vehicle control method of this application. The diagram also shows a scenario where the second motor drive module 20 performs drive control independently. In this case, the second motor 21 outputs driving force to the second gearbox 23 through the second output gear 22. Within the second gearbox 23, the second gearbox sliding sleeve 2A selects the second gear 2C for output, and the final output power is transmitted to the drive axle 200 through the second meshing gear 31 and the differential 33, ultimately achieving vehicle drive. (See also...) Figure 6 , Figure 6 This is an equivalent schematic diagram of the third embodiment of the electric drive axle device of this application. The diagram shows a scenario where the first motor drive module 10 performs drive control independently. In this case, the first motor 11 outputs driving force to the first gearbox 13 through the first output gear 12, and controls the first gearbox sliding sleeve 1A within the first gearbox 13 to select the first gear 1B for output. The final output power is then transmitted to the drive axle 200 through the second meshing gear 31 and the differential 33, ultimately achieving vehicle drive. (See also...) Figure 7 , Figure 7 This is an equivalent schematic diagram of the fourth embodiment of the electric drive axle device of this application. The diagram also shows a scenario where the first motor drive module 10 performs drive control independently. In this case, the first motor 11 outputs driving force to the first gearbox 13 through the first output gear 12, and within the first gearbox 13, controls the first gearbox sliding sleeve 1A to select the second gear 1C for output. The final output power is then transmitted to the drive axle 200 through the second meshing gear 31 and the differential 33, ultimately achieving vehicle drive. (See reference...) Figure 8 , Figure 8This is an equivalent schematic diagram of the fifth embodiment of the electric drive axle device of this application. The diagram shows a scenario where 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 coupling module 40. The two motors can output to their respective gearboxes through their respective output gears. For example, the first motor 11 outputs the driving force to the first gearbox 13 through the first output gear 12, and controls the first gearbox sliding sleeve 1A to select the first gearbox within the first gearbox 13. The first gear 1B of the transmission outputs power, while the second motor 21 outputs driving force to the second transmission 23 via the second output gear 22. Within the second transmission 23, the second transmission sleeve 2A selects the second gear 2C for output. The final output power from both transmissions is transmitted to the drive axle 200 via the second engagement gear 31, the first engagement gear 32, and the differential 33. This allows for simultaneous control of both motors, significantly increasing output torque. In scenarios involving both motors operating while climbing an incline, this greatly expands the functionality of the electric drive axle. (See reference...) Figure 9 , Figure 9 This is an equivalent schematic diagram of the sixth embodiment of the electric drive axle device of this application. The diagram shows a scenario where the first motor drive module 10 and the second motor drive module 20 are driven simultaneously. In this case, 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 coupling module 40. At this time, the two motors can output to the corresponding gearbox through one of the output gears. For example, if the first motor drive module 10 is selected for output, the first motor 11 outputs the driving force to the first gearbox 13 through the first output gear 12, and the first gearbox slide sleeve 1A is controlled within the first gearbox 13 to select the first gear 1B of the first gearbox for output. At the same time, the second motor 11 can output directly. 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 be the same or different. In this case, the number of gearbox speed ratios can be used to design the entire electric drive axle device as four or six gears, which can greatly improve 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 including the above-described electric drive axle device.

[0093] In this embodiment, the vehicle incorporates two motor drive modules in its electric drive axle assembly. When one motor drive module is in shifting mode, the other remains in normal power output mode, thus avoiding the power loss that occurs during gear shifts in a single-motor electric drive axle. This electric drive axle assembly overcomes the power loss problem during gear shifts by using two motor drive modules, thereby achieving uninterrupted power output during gear shifts.

[0094] Based on the first embodiment of the vehicle described above, a second embodiment of the vehicle of this application is proposed, the vehicle comprising:

[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 axle device. The drive axle 200, the first motor shaft of the first motor drive module 10 in the electric drive axle device and the second motor shaft of the second motor drive module 20 in the electric drive axle device coincide.

[0096] Specifically, 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 axle device is symmetrically distributed on the drive axle 200.

[0097] In this embodiment, a typical electric drive axle is arranged parallel to the axle, which results in a wider Y-axis (from front to rear of the vehicle) axle. This is especially true when higher power is required, such as when there are two drive motors. In this case, the two motors are placed on opposite sides of the axle, increasing the overall size and weight of the axle. Due to the unique structural characteristics of the electric drive axle, its excessive weight has a significant impact on the axle's strength and the overall vehicle weight. At this point, by adopting a coaxial design between the electric drive axle and the drive shaft 200, and maximizing the axial symmetry of the modules within the entire electric drive axle (i.e., the first motor drive module 10 and the second motor drive module 20 are symmetrically distributed on both sides of the drive shaft 200, and the drive output module 30 in the electric drive axle is symmetrically distributed on the drive shaft 200), the center of gravity of the entire electric drive axle will fall on the drive shaft 200, improving the service life of each component and avoiding wear deviations caused by uneven mass distribution. At the same time, the coaxial electric drive axle (i.e., the drive shaft 200, the first motor shaft of the first motor drive module 10 in the electric drive axle, and the second motor shaft of the second motor drive module 20 in the electric drive axle coincide) is more compact in structure and smaller in overall size, allowing 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 can also be an electric drive axle device, a vehicle, and a vehicle control method), which is applied to a vehicle including an electric drive axle device, the electric drive axle device having the composition of the above embodiments, and in this case, the vehicle control method includes:

[0099] Obtain the shifting requirements of the electric drive axle unit;

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

[0101] In this embodiment, by acquiring the shifting requirements of the electric drive axle device, i.e., whether to control the transmission shifting information, the state of the two transmissions can be directly obtained, or the vehicle's shifting requirements can be acquired, such as gear position switch or lever information (which can also be judged in combination with pedal, vehicle speed, and throttle information). Then, when the shifting requirements match the preset shifting start state, the shifting start state refers to the defined shifting start state, such as the user's lever movement from 3rd to 4th gear, the target motor drive module will be determined. The target motor drive module refers to the motor drive module that is not in the shifting state. If the first motor drive module is in the shifting start state, then the second motor drive module is the target motor drive module. The second motor drive module can then be in the power output state. The power output state can be a suitable custom power output or the most suitable power output for the current situation, which is not limited here. The target motor drive module can be controlled to be in the normal power output state to avoid the electric drive axle from having a power loss at the moment of shifting, thereby realizing that the electric drive axle device achieves no power interruption during shifting. Furthermore, the entire control process can also be as follows: based on the shifting requirements, the corresponding transmission connection state is determined in the preset gear table, and then the transmission is controlled based on the transmission connection state. Here, the preset gear table refers to the table that defines different gears and transmission connection states. The transmission connection state refers to selecting which gear of the transmission to connect. For example, if both transmissions have two gears, then the combined control of the two transmissions will have 4 gears. Adding the 2 gears of the individual transmission itself, 8 gears can be controlled, which can greatly improve the functionality of the electric drive axle device.

[0102] It should be noted that the above examples are only for understanding this application and do not constitute a limitation on the vehicle of this application. Any simple modifications based on this technical concept are within the protection scope of this application.

[0103] This application provides a vehicle (specifically, a transmission controller on a vehicle), the vehicle including: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the vehicle control method in the above embodiment 1.

[0104] The following is for reference. Figure 10 The diagram illustrates a structural schematic of a vehicle suitable for implementing embodiments of this application. The vehicle in these embodiments may include, but is not limited to, mobile terminals such as mobile phones, laptops, digital radio receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 10 The car shown is merely an example and should not be construed as limiting the functionality and scope of use of the embodiments of this application.

[0105] like Figure 10 As shown, the automobile may include a processing unit 1001 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 1002 or a program loaded from a storage device 1003 into a random access memory (RAM) 1004. The RAM 1004 also stores various programs and data required for automobile operation. The processing unit 1001, ROM 1002, and RAM 1004 are interconnected via a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following devices can be connected to the I / O interface 1006: input devices 1007 including, for example, a touchscreen, touchpad, keyboard, mouse, image sensor, microphone, accelerometer, gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), speaker, vibrator, etc.; storage devices 1003 including, for example, magnetic tape, hard disk, etc.; and communication devices 1009. The communication device 1009 allows the vehicle to communicate wirelessly or wiredly with other devices to exchange data. Although a vehicle with various devices is shown in the figure, it should be understood that it is not required to implement or possess all of the devices shown. More or fewer devices may be implemented or possessed alternatively.

[0106] Specifically, according to the embodiments disclosed in this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments disclosed in this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from storage device 1003, or installed from ROM 1002. When the computer program is executed by processing device 1001, it performs the functions defined in the methods of the embodiments disclosed in this application.

[0107] The automobile provided in this application, employing the vehicle control method described in the above embodiments, can solve the technical problem of how to achieve uninterrupted power transmission during gear shifting in the electric drive axle device. Compared with the prior art, the beneficial effects of the automobile provided in this application are the same as those of the vehicle control method provided in the above embodiments, and other technical features of the automobile are the same as those disclosed in the previous embodiment method, and will not be repeated here.

[0108] It should be understood that the various parts disclosed in this application can be implemented using 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 suitable manner in one or more embodiments or examples.

[0109] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0110] This application provides a computer-readable storage medium having computer-readable program instructions (i.e., a computer program) stored thereon, the computer-readable program instructions being used to execute the vehicle control method in the above embodiments.

[0111] The computer-readable storage medium provided in this 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: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution apparatus, device, or device. 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 aforementioned computer-readable storage medium may be included in the vehicle or may exist independently and not installed in the vehicle.

[0113] The aforementioned computer-readable storage medium carries one or more programs that, when executed by the vehicle, cause the vehicle to:

[0114] Obtain the shifting requirements of the electric drive axle unit;

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

[0116] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a Local Area Network (LAN) or a Wide Area Network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0117] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using dedicated hardware-based apparatus to perform the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0118] The modules described in the embodiments of this application can be implemented in software or hardware. The names of the modules do not necessarily limit the functionality of the unit itself.

[0119] The readable storage medium provided in this application is a computer-readable storage medium that stores computer-readable program instructions (i.e., a computer program) for executing the above-described vehicle control method, thereby solving the technical problem of how to achieve uninterrupted power transmission during gear shifting in an electric drive axle device. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in this application are the same as those of the vehicle control method provided in the above embodiments, and will not be repeated here.

[0120] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the vehicle control method described above.

[0121] The computer program product provided in this application solves the technical problem of how to achieve uninterrupted power transmission during gear shifting in an electric drive axle device. Compared with the prior art, the beneficial effects of the computer program product provided in this application are the same as those of the vehicle control method provided in the above embodiments, and will not be repeated here.

[0122] The above description is only a part of the embodiments of this application and does not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. An electric drive bridge device, characterized in that, The electric drive bridge device includes: First motor drive module; A second motor drive module, the output terminal of which is connected to the output terminal of the first motor drive module; A drive output module is provided, with its first end connected to the output end of the first motor drive module and its second end connected to the drive axle. When the first motor drive module is in a shifting state, the second motor drive module is in a normal power output state; conversely, when the second motor drive module is in a shifting state, the first motor drive module is in a normal power output state. The vehicle's drive axle, the first motor axle of the first motor drive module, and the second motor axle of the second motor drive module overlap. The first and second motor drive modules are symmetrically distributed on both sides of the drive axle. The drive output modules are symmetrically distributed on the drive axle. The electric drive axle device also includes a motor coupling module. The first motor drive module includes: A first motor, the output end of which serves as the output end of the first motor drive module, and is connected to the output end of the second motor drive module via the motor coupling module; a first output gear, the first end of which is connected to the output end of the first motor; a first gearbox, the input end of which is connected to the second end of the first output gear, and the output end of which is connected to the 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, and the first motor in the first motor drive module and the second motor in the second motor drive module control the first motor drive module and the second motor drive module to drive synchronously via the motor coupling module.

2. The electric drive axle device as described in claim 1, characterized in that, The first gearbox includes: First gearbox sliding sleeve; The first gear of the first gearbox has a first end connected to the second end of the first output gear through the first gearbox sliding sleeve. The second end of the first gear is connected to the first end of the drive output module. The second end of the first gear rotates synchronously with the first end of the first gear. The first gearbox has a second gear, the first end of which is connected to the second end of the first output gear via the first gearbox sliding sleeve. The second end of the first gearbox is connected to the first end of the drive output module. The second end of the first gearbox rotates synchronously with the first end of the first gearbox.

3. The electric drive axle device as described in claim 1, characterized in that, The second motor drive module includes: The second motor has its output terminal serving as the output terminal of the second motor drive module and is connected to the output terminal of the first motor drive module. The second output gear, the first end of which is connected to the output end of the second motor; The second gearbox has its input end connected to the second end of the second output gear, and its output end 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.

4. The electric drive axle device as described in claim 3, characterized in that, The second gearbox includes: Second gearbox sliding sleeve; The first gear of the second gearbox has its first end connected to the second end of the second output gear via the second gearbox sliding sleeve. The second end of the first gear of the second gearbox is connected to the first end of the drive output module. 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 gear of the second gearbox has a first end connected to the second end of the second output gear via the second gearbox sliding sleeve. The second end of the second gear of the second gearbox is connected to the first end of the drive output module. The second end of the second gear of the second gearbox rotates synchronously with the first end of the second gear of the second gearbox.

5. The electric drive axle device as described in claim 1, characterized in that, The drive output module includes: The first meshing gear, the first end of the first meshing gear is connected to the output end of the first motor drive module; The second meshing gear, the first end of the second meshing gear is connected to the output end of the second motor drive module; The differential has a first input end connected to the second end of the first meshing gear, a second input end connected to the second end of the second meshing gear, and an output end connected to the drive axle. 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.

6. The electric drive axle device according to any one of claims 1 to 5, characterized in that, The first motor drive module includes: The first motor shaft connects the first motor in the first motor drive module and the first output gear in the first motor drive module. The second motor drive module includes: The second motor shaft connects the second motor in the second motor drive module and the second output gear in the second motor drive module.

7. A vehicle, characterized in that, The vehicle includes the electric drive axle assembly as described in any one of claims 1 to 6.

8. The vehicle as described in claim 7, characterized in that, The vehicles include: The drive axle is connected to the right wheel, the left wheel, and the output of the differential in the electric drive axle assembly.

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