Driving system and vehicle

Abstract

The invention discloses a driving system and a vehicle, and belongs to the technical field of automobiles. The driving system comprises a driving motor, a differential mechanism and a transmission rod. The driving motor can directly drive the differential mechanism to work through cooperation of the first driving gear on the motor shaft and the second driven gear on the differential mechanism, an intermediate shaft structure is omitted, a transmission structure between the driving motor and the differential mechanism is simplified, the structure of a driving system is further simplified, and cost is greatly saved. And the driving system provides power through the two driving motors, so that the problem of insufficient power output possibly caused by single-motor driving is solved, and the whole vehicle is higher in safety and higher in response speed. And the first driving gear and the second driven gear are herringbone gears, so that the problem of axial force of a helical gear in the prior art can be avoided.

Description

Technical Field

[0001] This application relates to the technical field of automobiles, and particularly relates to a drive system and a vehicle. Background Art

[0002] The drive system is the main execution structure for a vehicle to travel. The vehicle provides power to the wheels through the drive system to drive the vehicle forward. The drive system of the vehicle determines the main performance indicators of the vehicle's travel. However, with the continuous improvement of vehicle performance, the drive system cannot meet the performance requirements of the vehicle, and the drive system has become an important bottleneck restricting the development of the vehicle.

[0003] Currently, the structure in the drive system of the prior art is complex and difficult to meet the requirements for vehicle performance. Summary of the Invention

[0004] Embodiments of this application provide a drive system and a vehicle, which can solve the problem of the complex structure of the drive system in the prior art. The technical solutions are as follows:

[0005] On the one hand, a drive system is provided, including: two drive motors, a differential, and a transmission rod; the drive motor includes: a drive motor body and a first drive gear; the drive motor body has a motor shaft, one end of the motor shaft extends out of the drive motor body, and the first drive gear is connected to the part of the motor shaft that extends out of the drive motor body;

[0006] The differential includes: a second driven gear, a differential housing, and a gear assembly. The gear assembly is connected to the differential housing inside the differential housing, and the second driven gear is connected to the outer surface of the differential housing;

[0007] One end of the transmission rod is in transmission connection with the gear assembly, and the other end of the transmission rod is used to be connected to a wheel;

[0008] Wherein, the two first drive gears in the two drive motors are both meshed with the second driven gear.

[0009] Optionally, the second driven gear is a gear ring, and the gear ring is sleeved on the differential housing and fixedly connected to the differential housing;

[0010] Wherein, the gear ring is located between the two first drive gears in a second direction, and the two relatively arranged ends of the gear ring in the second direction are respectively meshed with the two first drive gears; the second direction intersects with the axis of the gear ring.

[0011] Optionally, the first drive gear and the motor shaft are an integral structure;

[0012] Alternatively, the drive motor further includes: a connecting member, and the first drive gear is connected to the outer surface of the motor shaft through the connecting member.

[0013] Optionally, the first drive gear has a plurality of first herringbone teeth, and the second driven gear has a plurality of second herringbone teeth;

[0014] Wherein, some of the first herringbone teeth are engaged with some of the second herringbone teeth.

[0015] Optionally, the first herringbone tooth has a first helical tooth and a second helical tooth arranged in a first direction; the second herringbone tooth has a third helical tooth and a fourth helical tooth arranged in the first direction;

[0016] Wherein, the extending direction of the first helical tooth intersects with the extending direction of the second helical tooth, and the extending direction of the third helical tooth intersects with the extending direction of the fourth helical tooth; and the extending directions of the first helical tooth, the second helical tooth, the third helical tooth and the fourth helical tooth all intersect with the first direction; some of the first helical teeth are engaged with some of the third helical teeth, and some of the second helical teeth are engaged with some of the fourth helical teeth; the first direction is parallel to the axis of the gear ring.

[0017] Optionally, the first drive gear further has a first gap groove located between the plurality of first helical teeth and the plurality of second helical teeth;

[0018] And / or, the second driven gear further has a second gap groove located between the plurality of third helical teeth and the plurality of fourth helical teeth.

[0019] Optionally, the drive motor further includes: two first rolling ball bearings, and the two first rolling ball bearings are sleeved on the motor shaft and connected to the drive motor body.

[0020] Optionally, the gear assembly includes: two planetary gears oppositely arranged in a second direction and having coincident axes, and two half-axle gears oppositely arranged in a first direction and having coincident axes; the first direction and the second direction intersect;

[0021] The gear shafts of the two planetary gears are both connected to the differential housing, and the two planetary gears are both engaged with the two half-axle gears;

[0022] The number of the transmission rods is two, and the two transmission rods correspond to the two half-axle gears one by one, and one end of each transmission rod is in transmission connection with the corresponding half-axle gear.

[0023] Optionally, the drive system further includes: a transmission housing and at least two second rolling ball bearings. The at least two second rolling ball bearings are respectively sleeved on two opposite ends of the differential housing in a first direction, and are connected to the transmission housing; the first direction is parallel to the axis of the gear ring.

[0024] On the other hand, a vehicle is also provided, including: a vehicle body, wheels, and a drive system. The drive system is installed inside the vehicle body and is in transmission connection with the wheels, and the drive system is any one of the above-mentioned drive systems.

[0025] The beneficial effects brought by the technical solutions provided in the embodiments of the present application at least include:

[0026] The drive motor can directly drive the differential to work through the cooperation of the first drive gear on the motor shaft and the second drive gear on the differential, eliminating the intermediate shaft structure, simplifying the transmission structure between the drive motor and the differential, and further simplifying the structure of the drive system, greatly saving costs. And the wheels in the vehicle can be driven by two drive motors, solving the problem of insufficient power output that may be caused by a single motor drive, making the vehicle safer and faster in response. And both the first drive gear and the second drive gear are herringbone gears, which can avoid the problem of axial force of helical gears in the prior art. Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 is a schematic structural diagram of a drive system provided by an embodiment of the present application;

[0029] Figure 2 is a power transmission path diagram of a drive system provided by an embodiment of the present application;

[0030] Figure 3 is a schematic structural diagram of another drive system provided by an embodiment of the present application;

[0031] Figure 4 is a schematic diagram of the power transmission path of another drive system provided by an embodiment of the present application;

[0032] Figure 5 is a plan view of a first drive gear and a second driven gear provided by an embodiment of the present application. Detailed Embodiments

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the following will further describe the embodiments of this application in detail with reference to the accompanying drawings.

[0034] Currently, the drive system of a vehicle may include: a motor and a differential. The motor in the drive system can drive the wheels in the vehicle to rotate by driving the differential to rotate. The differential can enable the left and right wheels in the vehicle to rotate at different speeds to meet the requirement that the left and right wheels have different speeds when the vehicle turns, ensuring the stability and safety of turning.

[0035] However, in the prior art, a complex transmission mechanism is required between the motor and the differential to achieve transmission, resulting in a complex structure of the drive system. Consequently, the transmission smoothness of the drive system is poor and the cost is high. By way of example, the motor shaft of the motor in the prior art needs to cooperate with an intermediate shaft to drive the differential to work through the intermediate shaft, leading to a complex transmission structure between the motor and the differential.

[0036] An embodiment of this application provides a drive system. Please refer to Figure 1 and Figure 2 , Figure 1 which is a schematic structural diagram of a drive system provided by an embodiment of this application, Figure 2 and

[0037] which is a power transmission path diagram of a drive system provided by an embodiment of this application. The drive system may include: two drive motors 100, a differential 200, and a transmission rod 300.

[0038] The drive motor 100 in the drive system may include: a drive motor body 101 and a first drive gear A1. The drive motor body 101 may have a motor shaft 1021. One end of the motor shaft 1021 may extend out of the drive motor body 101. The first drive gear A1 may be connected to the part of the motor shaft 1021 that extends out of the drive motor body 101. Here, the motor shaft 1021 is the motor shaft that exists after the drive motor 100 is manufactured. During the operation of the drive motor 100, the drive motor 100 directly drives the motor shaft 1021 to rotate.

[0039] The differential 200 in the drive system may include: a second driven gear A2, a differential housing 201, and a gear assembly 202. The gear assembly 202 in the differential 200 may be connected to the differential housing 201 inside the differential housing 201. The second driven gear A2 may be connected to the outer surface of the differential housing 201.

[0040] Here, during the process of the driving motor 100 driving the rotation of the motor shaft 1021, through the meshing connection between the first driving gear A1 and the second driven gear A2, the first driving gear A1 can drive the second driven gear A2 to rotate, and then drive the differential housing 201 to rotate, so as to drive the differential 200 to work. Here, when the vehicle is driving straight, the differential 200 can drive the two transmission rods 300 to rotate through the gear assembly 202, and then drive the left and right wheels to rotate, so as to drive the vehicle forward or backward. When the vehicle turns, the differential 200 can adapt to the different rotational speed requirements of the left and right wheels through the gear assembly 202, so as to drive the left and right wheels to rotate at different speeds through the two transmission rods 300, ensuring the stability and safety of the vehicle during turning.

[0041] In this way, when the driving motor 100 drives the rotation of the motor shaft 1021, the driving motor 100 can directly drive the differential housing 201 to rotate through the cooperation between the first driving gear A1 on the motor shaft 1021 and the second driven gear A2 on the differential housing 201, so as to drive the differential 200 to work. In this way, the driving motor can directly drive the differential 200 through the motor shaft, eliminating the intermediate shaft structure, simplifying the transmission structure between the driving motor 100 and the differential 200, and further simplifying the structure of the driving system, greatly saving costs.

[0042] And the driving system can include two driving motors 100, and the two first driving gears A1 in the two driving motors 100 can both mesh with the second driven gear A2 of the differential housing 201. That is to say, the driving system can provide power through two driving motors. In this way, compared with the problem of insufficient power output that may be caused by single-motor drive in the prior art, the two driving motors 100 in the driving system can provide stronger power output and better handling stability, making the vehicle have higher overall vehicle safety and faster response speed.

[0043] In summary, the embodiment of the present application provides a driving system, including: a driving motor, a differential, and a transmission rod. When the driving motor starts to work to drive the rotation of the motor shaft, through the cooperation between the first driving gear on the motor shaft and the second driven gear on the differential housing, the motor shaft directly drives the differential housing to rotate, so as to drive the differential to work, so as to drive the wheels in the vehicle to rotate through the transmission rod. In this way, the driving motor can directly drive the differential through the motor shaft, eliminating the intermediate shaft structure, simplifying the transmission structure between the driving motor and the differential, and further simplifying the structure of the driving system, greatly saving costs. And the driving system provides power through two driving motors, solving the problem of insufficient power output that may be caused by single-motor drive, making the vehicle have higher overall vehicle safety and faster response speed.

[0044] It should be noted that the two drive motors 100 in the drive system can select different drive modes according to different loads. For example, when a single drive motor 100 can meet the load demand, the drive system can drive the wheels to rotate only through one drive motor 100, and the other drive motor 100 remains idling. When the load is large, the drive system can drive the wheels to rotate through the two drive motors 100, and the load sharing ratio of the two drive motors 100 can be allocated according to the most power-saving state. It should also be noted that when a single drive motor 100 can meet the load demand, the drive system can also drive through the two drive motors 100 simultaneously and achieve the purpose of power saving by distributing the load.

[0045] Optionally, as Figure 3 and Figure 4 shown, Figure 3 is a schematic diagram of the power transmission path of another drive system provided by an embodiment of the present application. Figure 4 is a schematic diagram of the power transmission path of another drive system provided by an embodiment of the present application. The second driven gear A2 in the differential 200 can be a gear ring 2012. The gear ring 2012 can be sleeved on the differential housing 201 and can be fixedly connected to the differential housing 201.

[0046] Wherein, the gear ring 2012 can be located between the two first drive gears A1 in the second direction Y. And both ends of the gear ring 2012 in the second direction X can be meshed with the two first drive gears A1 respectively. In this way, the differential 200 can rotate under the drive of the two drive motors 100, and then drive the wheels to rotate. Here, the second direction Y can intersect with the axis of the gear 2012.

[0047] In the present application, the first drive gear A1 and the motor shaft 1021 can be an integral structure, that is, the motor shaft 1021 in the drive motor 100 can be a gear shaft with the first drive gear A1. Or the drive motor 100 can further include a connecting member, and the first drive gear A1 can be connected to the outer surface of the motor shaft 1021 through the connecting member. Here, the connecting member can be a spline.

[0048] Optionally, as Figure 5 shown, Figure 5It is a plan view of a first driving gear and a second driven gear provided by an embodiment of the present application. The first driving gear A1 may have a plurality of first herringbone teeth A10, and the second driven gear A2 may have a plurality of second herringbone teeth A20. Here, some of the first herringbone teeth A10 of the first driving gear A1 may mesh with some of the second herringbone teeth A20 of the second driven gear A2. That is to say, the first driving gear A1 and the second driven gear A2 are herringbone gears in meshing connection. The herringbone gear itself has a higher contact ratio and higher load-carrying capacity. Therefore, compared with the transmission achieved by helical gears in the prior art, the transmission through the first driving gear A1 and the second driven gear A2 can make the driving system have better transmission smoothness and can avoid the axial force problem of helical gears. Moreover, compared with helical gears, herringbone gears have better noise, vibration, and harshness (English name: Noise, Vibration, Harshness, abbreviated as: NVH) performance, and can effectively alleviate noise problems such as whistling generated during gear rotation.

[0049] Optionally, as Figure 5 shown, the first herringbone teeth A10 of the first driving gear A1 may have a plurality of first helical teeth A11 and a plurality of second helical teeth A12 arranged in the first direction X. The second herringbone teeth A20 of the second driven gear A2 may have a plurality of third helical teeth A21 and a plurality of fourth helical teeth A22 arranged in the first direction X.

[0050] Among them, the extending direction of the first helical teeth A11 in the first herringbone teeth A10 may intersect with the extending direction of the second helical teeth A12. The extending direction of the third helical teeth A21 in the second herringbone teeth A20 may intersect with the extending direction of the fourth helical teeth A22. Moreover, the extending directions of the first helical teeth A11 and the second helical teeth A12 of the first herringbone teeth A10, and the extending directions of the third helical teeth A21 and the fourth helical teeth A22 of the second herringbone teeth A20 may all intersect with the first direction X. Here, the first direction X may be parallel to the axis of the gear ring 2012.

[0051] Some of the first helical teeth A11 may mesh with some of the third helical teeth A21, and some of the second helical teeth A12 may mesh with some of the fourth helical teeth A22, so as to achieve that some of the first herringbone teeth A10 can mesh with some of the second herringbone teeth A20.

[0052] It should be noted that the first driving gear A1 of the motor shaft 1021 is structurally equivalent to a helical gear with a first helical tooth A11 and a helical gear with a second helical tooth A12 mounted side by side in the first direction X. Similarly, the second driven gear A2 of the differential housing 201 is structurally equivalent to a helical gear with a third helical tooth A21 and a helical gear with a fourth helical tooth A22 mounted side by side in the first direction X. When the first driving gear A1 and the second driven gear A2 are engaged, the helical gear with the first helical tooth A11 can be engaged with the helical gear with the third helical tooth A21, and the helical gear with the second helical tooth A12 can be engaged with the helical gear with the fourth helical tooth A22.

[0053] Optionally, as Figure 5 shown, the first driving gear A1 may further have a first gap groove S1 located between a plurality of first helical teeth A11 and a plurality of second helical teeth A12. And / or, the second driven gear A2 may further have a second gap groove S2 located between a plurality of third helical teeth A21 and a plurality of fourth helical teeth A22.

[0054] That is to say, after the first driving gear A1 and the second driven gear A2 are engaged, the following three situations may occur: in the first situation, the first driving gear A1 may have the first gap groove S1, and the second driven gear A2 does not have the second gap groove S2. In the second situation, the first driving gear A1 does not have the first gap groove S1, and the second driven gear A2 has the second gap groove S2. In the third situation, the first driving gear A1 has the first gap groove S1, and the second driven gear A2 has the second gap groove S2.

[0055] In this way, there is a first gap groove S1 between the first helical tooth A11 and the second helical tooth A12 with different extension directions in the first driving gear A1, and / or there is a second gap groove S2 between the third helical tooth A21 and the fourth helical tooth A22 with different extension directions in the second driven gear A2, which can facilitate the cooling and lubrication of the first driving gear A1 and the second driven gear A2.

[0056] Moreover, the first driving gear A1 has a first clearance groove S1, that is, in the first direction X, there is a certain distance between the first helical tooth A11 and the second helical tooth A12. In this way, compared with the connection between the end of the first helical tooth facing the second helical tooth and the end of the second helical tooth facing the first helical tooth, the first driving gear A1 having the first clearance groove S1 can reduce the processing difficulty of the first driving gear A1. Similarly, the second driven gear A2 has a second clearance groove S2, that is, in the first direction X, there is a certain distance between the third helical tooth A21 and the fourth helical tooth A22. In this way, compared with the connection between the end of the third helical tooth facing the fourth helical tooth and the end of the fourth helical tooth facing the third helical tooth, the second driven gear A2 having the first clearance groove S2 can reduce the processing difficulty of the second driven gear A2.

[0057] Optionally, as Figure 3 shown, the drive motor 100 in the drive system may further include: two first rolling ball bearings 103. The two first rolling ball bearings 103 in the drive motor 100 can be sleeved on the motor shaft 1021 and can be connected to the drive motor body 101. In this way, the two first rolling ball bearings 103 can support the motor shaft 102 and can ensure that the motor shaft 102 can rotate under the drive of the drive motor 100.

[0058] It should be noted that the first driving gear A1 and the second driven gear A2 are two herringbone gears in meshing connection. The herringbone gear itself has a higher contact ratio and higher load-bearing capacity. Therefore, compared with the transmission achieved by helical gears in the prior art, the transmission through the first driving gear A1 and the second driven gear A2 can make the drive system have better transmission smoothness and can avoid the axial force problem of helical gears.

[0059] In the case where the herringbone gear does not have an axial force, the first rolling ball bearings 103 can be used to support the motor shaft 102 to replace the tapered bearings used to bear the axial force in the prior art. Here, compared with tapered bearings, ball bearings have lower manufacturing costs and smaller transmission energy losses, thus further saving costs and improving the overall transmission efficiency of the drive system.

[0060] Optionally, as Figure 3 and Figure 4 shown, as Figure 4 and Figure 5 shown, the gear assembly 200 may include: two planetary gears disposed opposite to each other in the second direction Y and having coincident axes, and two half-axle gears disposed opposite to each other in the first direction X and having coincident axes. Here, the first direction X may intersect with the second direction Y. By way of example, the first direction X may intersect perpendicularly with the second direction Y.

[0061] The gear shafts of the two planetary gears 2021 in the gear assembly 202 can both be connected to the differential housing 201, and the two planetary gears 2021 can both mesh with the two half-axle gears 2022. The number of transmission rods 300 in the drive system can be two, and the two transmission rods 300 can correspond to the two half-axle gears 2022 one by one. One end of each transmission rod 300 can be drivingly connected to the corresponding half-axle gear 200, and the other end can be connected to the wheel 010.

[0062] It should be noted that the rotation axis of the housing body 2011 in the differential housing 201 coincides with the rotation axis of the gear ring 2022, which is the rotation axis of the differential housing 201. And the rotation axis of the differential housing 201 coincides with the rotation axes of the two half-axle gears 2022, and thus can intersect with the rotation axes of the two planetary gears 2021.

[0063] It should also be noted that the drive system can further include a rotating shaft fixedly connected to the two planetary gears 2021, and the axis of this rotating shaft coincides with the axes of the two planetary gears 2021. The two planetary gears 2021 can be connected to the housing body 2011 through this rotating shaft.

[0064] When the drive system is installed in a vehicle, the two transmission rods 300 in the drive system are respectively connected to the two left and right wheels of the vehicle, and the two left and right wheels in the vehicle are two wheels whose arrangement direction intersects with the forward direction of the vehicle.

[0065] After the drive motor 100 in the drive system drives the differential housing 201 to rotate through the cooperation of the first driving gear A1 and the second driven gear A2, and then through the connection between the rotating shaft of the two planetary gears 2021 and the housing body 2011 in the differential housing 201, the housing body 2011 can drive the two planetary gears 2021 to rotate around the rotation axis of the differential housing 201. Furthermore, through the meshing of the two planetary gears 2021 and the two half-axle gears 2022, the two half-axle gears 2022 can rotate around the axes of the half-axle gears 2022, and then can drive the wheels to rotate through the transmission rods 300 to drive the vehicle to move forward or backward.

[0066] When the vehicle is turning, to meet the requirement of different rotational speeds of the left and right wheels, during the process of the two planetary gears 2021 rotating around the axis of the differential housing 2011, they will also rotate around their own axes of the planetary gears 2021. Furthermore, they can drive the two half-axle gears 2022 to drive the left and right two wheels to rotate at different speeds through the two transmission rods 300 to ensure the stability and safety of the vehicle during turning.

[0067] Optionally, such as Figure 3As shown, the drive system may further include: a transmission housing and at least two second rolling ball bearings 400. The at least two second rolling ball bearings 400 in the drive system may be respectively sleeved on two opposite ends of the differential housing 201 in the first direction X, and may be connected to the transmission housing. In this way, the second rolling ball bearings 400 may support the differential 200 and ensure that the differential 200 can rotate.

[0068] Similarly, since the first driving gear A1 and the second driven gear A2 are two meshingly connected herringbone gears, the herringbone gears themselves have a higher overlap and a higher load-bearing capacity. Therefore, compared with the transmission achieved through helical gears in the prior art, the transmission through the first driving gear A1 and the second driven gear A2 can make the drive system have better transmission smoothness and avoid the axial force problem of helical gears.

[0069] In the case where the herringbone gear does not have an axial force, the second rolling ball bearing 400 can be used to support the transmission rod 300 to replace the cone bearing used in the prior art to withstand the axial force. Here, compared with the cone bearing, the ball bearing has a lower manufacturing cost and less transmission energy loss, which further saves costs and improves the overall transmission efficiency of the drive system.

[0070] In summary, an embodiment of the present application provides a drive system, including: a drive motor, a differential and a transmission rod. The drive motor can directly drive the differential to work through the cooperation of the first drive gear on the motor shaft and the second driven gear on the differential, eliminating the intermediate shaft structure, simplifying the transmission structure between the drive motor and the differential, and then simplifying the structure of the drive system, greatly saving costs. The wheels in the vehicle can be driven by two drive motors, which solves the problem of insufficient power output that may be caused by single-motor drive, making the vehicle safer and more responsive. The first drive gear and the second driven gear are both herringbone gears, which can avoid the axial force problem of the helical gears in the prior art.

[0071] The embodiment of the present application further provides a vehicle, which may include: a vehicle body, wheels, and a drive system. The drive system in the vehicle may be the drive system in the above embodiment, the drive system in the vehicle may be installed inside the vehicle body, and may be connected to the wheels in a transmission manner, and the drive system may drive the wheels to rotate, so as to drive the vehicle to travel.

[0072] Here, the wheels in a vehicle can be divided into driving wheels and driven wheels. The wheels in the vehicle that are directly driven by the drive system to rotate are driving wheels. In the forward direction of the vehicle, the driving wheels in the vehicle can be the left and right two wheels arranged in the front, or can be the left and right two wheels arranged in the rear. That is to say, the vehicle in this application can be a front-wheel drive vehicle or a rear-wheel drive vehicle, and the embodiments of this application do not make any limitations in this regard.

[0073] In addition, the vehicle in this application can be a hybrid vehicle driven by a combination of an internal combustion engine and an electric motor, or can be a pure electric vehicle. The embodiments of this application do not make any limitations in this regard.

[0074] In this application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless otherwise clearly defined.

[0075] The above are only optional embodiments of this application and are not intended to limit this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims

1. A drive system, characterized in that, Including: Two drive motors (100), a differential (200) and a transmission rod (300); The drive motor (100) includes: a drive motor body (101) and a first drive gear (A1); the drive motor body (101) has a motor shaft (1021), one end of the motor shaft (1021) extends outside the drive motor body (101), and the first drive gear (A1) is connected to the part of the motor shaft (1021) that extends outside the drive motor body (101); The differential (200) includes: a second driven gear (A2), a differential housing (201) and a gear assembly (202), the gear assembly (202) is connected to the differential housing (201) inside the differential housing (201), and the second driven gear (A2) is connected to the outer surface of the differential housing (201); One end of the transmission rod (300) is in transmission connection with the gear assembly (202), and the other end of the transmission rod (300) is used for connection with a wheel (010); Wherein, the two first drive gears (A1) in the two drive motors (100) are both meshed with the second driven gear (A2).

2. The drive system according to claim 1, characterized in that The second driven gear (A2) is a gear ring (2012), and the gear ring (2012) is sleeved on the differential housing (201) and fixedly connected to the differential housing (201); Wherein, the gear ring (2012) is located between the two first drive gears (A1) in a second direction (Y), and the two opposite ends of the gear ring (2012) in the second direction (Y) are respectively meshed with the two first drive gears (A1); the second direction (Y) intersects with the axis of the gear ring (2012).

3. The drive system according to claim 1, characterized in that, The first drive gear (A1) and the motor shaft (1021) are of an integral structure; Or, the drive motor (100) further includes: a connecting piece, and the first drive gear (A1) is connected to the outer surface of the motor shaft (1021) through the connecting piece.

4. The drive system according to any one of claims 1-3, characterized in that, The first drive gear (A1) has a plurality of first herringbone teeth (A10), and the second driven gear (A2) has a plurality of second herringbone teeth (A20); Wherein, some of the first herringbone teeth (A10) are meshed with some of the second herringbone teeth (A20).

5. The drive system according to claim 4, characterized in that, The first herringbone teeth (A10) have a first helical tooth (A11) and a second helical tooth (A12) arranged in a first direction (X); the second herringbone teeth (A20) have a third helical tooth (A21) and a fourth helical tooth (A22) arranged in the first direction (X); Wherein, the extending direction of the first helical tooth (A11) intersects with the extending direction of the second helical tooth (A12), and the extending direction of the third helical tooth (A21) intersects with the extending direction of the fourth helical tooth (A22); moreover, the extending directions of the first helical tooth (A11), the second helical tooth (A12), the third helical tooth (A21), and the fourth helical tooth (A22) all intersect with the first direction (X); part of the first helical tooth (A11) meshes with part of the third helical tooth (A21), and part of the second helical tooth (A12) meshes with part of the fourth helical tooth (A22); the first direction (X) is parallel to the axis of the gear ring (2012).

6. The drive system according to claim 5, wherein, The first driving gear (A1) further has a first gap groove body (S1) located between the plurality of first helical teeth (A11) and the plurality of second helical teeth (A12); and / or, the second driven gear (A2) further has a second gap groove body (S2) located between the plurality of third helical teeth (A21) and the plurality of fourth helical teeth (A22).

7. The drive system according to claim 4, wherein The drive motor (100) further includes: two first rolling ball bearings (103), and the two first rolling ball bearings (103) are sleeved on the motor shaft (1021) and connected to the drive motor body (101).

8. The drive system according to any one of claims 1-3, 5-7, characterized in that The gear assembly (202) includes: two planetary gears (2021) oppositely arranged in the second direction (Y) and having coincident axes, and two half-axle gears (2022) oppositely arranged in the first direction (X) and having coincident axes; the first direction (X) and the second direction (Y) intersect; The gear shafts of the two planetary gears (2021) are both connected to the differential housing (201), and the two planetary gears (2021) both mesh with the two half-axle gears (2022); The number of the transmission rods (300) is two, and the two transmission rods (300) correspond to the two half-axle gears (2022) one by one, and one end of each transmission rod (300) is in transmission connection with the corresponding half-axle gear (2022).

9. The drive system according to claim 8, wherein The drive system further includes: a gearbox housing and at least two second rolling ball bearings (400), and the at least two second rolling ball bearings (400) are respectively sleeved on the two opposite ends of the differential housing (201) in the first direction (X) and connected to the gearbox housing; the first direction (X) is parallel to the axis of the gear ring (2012).

10. A vehicle, characterized in that, Comprising: A vehicle body, wheels, and a drive system, the drive system is installed inside the vehicle body and is in transmission connection with the wheels, and the drive system is the drive system according to any one of claims 1-9 above.

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