Search

DE-112023006482-T5 - DIFFERENTIAL, DRIVETRAIN AND VEHICLE

DE112023006482T5DE 112023006482 T5DE112023006482 T5DE 112023006482T5DE-112023006482-T5

Abstract

A differential is specified. The differential includes an integrated wheel-end decoupler (840) and differential lock (850). The wheel-end decoupler (840) and differential lock (850) are configured to implement coupling with a wheel end (100), decoupling from a wheel end (100), differential rotation with a wheel end (100), and synchronous rotation with a wheel end (100). A drivetrain is specified. The drivetrain includes a reduction gear (600). The reduction gear (600) includes the differential. Additionally, a vehicle is specified. The vehicle includes the drivetrain. The differential, the drivetrain, and the vehicle implement functions of coupling or decoupling with a wheel end and differential or synchronous rotation with a wheel end. Furthermore, the level of integration is high and the space requirement is small.

Inventors

  • Haibo Zhu
  • Jian Wang
  • Yan Yao

Assignees

  • BYD COMPANY LIMITED

Dates

Publication Date
20260513
Application Date
20231108
Priority Date
20230612

Claims (20)

  1. Differential (700), comprising: an integrated wheel-end decoupler (840) and differential lock (850); wherein the wheel-end decoupler and the differential lock are configured to implement coupling with a wheel end (100), decoupling from the wheel end, differential rotation with the wheel end, and synchronous rotation with the wheel end.
  2. differential after Claim 1 , comprising: a differential gear, wherein the wheel end decoupler and the differential lock are arranged on two sides of the differential gear.
  3. differential after Claim 1 , comprising: a differential gear, wherein the wheel end decoupler and the differential lock are arranged on the same side of the differential gear.
  4. differential after Claim 2 , comprising: a differential housing (710), wherein the differential housing comprises a first sub-housing (711) and a second sub-housing (712); wherein the wheel end decoupler is housed in the first sub-housing and wherein the differential lock is housed in the second sub-housing.
  5. differential after Claim 3 , wherein the differential housing is connected to the differential gear, the differential comprising: a first half-shaft (400), wherein a first end of the wheel end decoupler is connected to the first half-shaft and a second end of the wheel end decoupler can be selectively connected to the differential gear; and a second half-shaft (500), wherein the second half-shaft is connected to the differential gear.
  6. differential after Claim 5 , wherein the differential lock is configured to implement a connection between the second half-shaft and the differential housing, and is configured to implement a separation between the second half-shaft and the differential housing.
  7. differential after Claim 5 or 6 , wherein the differential gear comprises: a first half-shaft gear (730) and a second half-shaft gear (740), wherein the second half-shaft gear is connected to the second half-shaft and wherein the wheel end decoupler can be selectively connected to the first half-shaft gear.
  8. differential after Claim 7 , wherein the wheel end decoupler comprises: a first engagement section (844) wherein the first engagement section is configured to be connected to the first half-shaft; and a decoupling mechanism wherein the decoupling mechanism is configured to drive the first engagement section and can be selectively connected to the first half-shaft wheel.
  9. differential after Claim 8 , wherein the first engagement section is located in the differential housing and the decoupling mechanism is located on a first side of the differential housing.
  10. differential after Claim 8 or 9 , wherein the decoupling mechanism comprises: a decoupling drive disk (841), wherein the decoupling drive disk has a first working surface (8431) and distances between different positions located on the first working surface and in the circumferential direction and the first half-shaft wheel are different; a push rod (846), wherein the push rod is located between the first working surface and the first engagement section; and a first actuator (842), wherein the first actuator is configured to switch a synchronization state between the first half-shaft wheel and the first engagement section.
  11. differential after Claim 10 , wherein the decoupling drive disc is movably mounted on the differential housing and the first actuator is a attracting device designed to attract the decoupling drive disc.
  12. Differential after one of the Claims 8 until 11 , further comprising: a first restoring element (847), wherein the first restoring element is elastically connected between the first half-shaft wheel and the first engagement section.
  13. Differential after one of the Claims 7 until 12 , wherein the differential lock comprises: a second engagement section (852) wherein the second engagement section is connected to the differential housing; and a locking mechanism wherein the locking mechanism is configured to drive the second engagement section and can be selectively connected to the second half-shaft gear.
  14. differential after Claim 13 , wherein a main body part of the second engagement section is located in the differential housing and the locking mechanism is located on a second side of the differential housing.
  15. differential after Claim 13 or 14 , wherein the locking mechanism comprises: a differential lock drive disk (854), wherein the differential lock drive disk has a second working surface, wherein distances between different positions located on the second working surface and in the circumferential direction and the second half-shaft gear are different, wherein the second engagement section bears against the second working surface; and a second actuator (855), wherein the second actuator is configured to switch a synchronization state between the differential lock drive disk and the differential housing.
  16. differential after Claim 15 , wherein the differential lock drive disc is movably mounted on the differential housing and the second actuator is a pulling device designed to pull the differential lock drive disc.
  17. differential after Claim 15 or 16 , wherein the second engagement section has a rod body (853) and the rod body extends through the differential housing and rests against the second working surface.
  18. Differential after one of the Claims 13 until 17 , further comprising: a second restoring element (851), wherein the second restoring element is elastically connected between the second half-shaft wheel and the second engagement section.
  19. Drivetrain comprising: a reduction gear (600), wherein the reduction gear engages the differential according to one of the Claims 1 until 18 includes.
  20. Powertrain Claim 19 , comprising: a drive motor (300) wherein the drive motor is connected to the reduction gear; and a control unit (200) wherein the control unit is electrically connected to the drive motor and the reduction gear.

Description

CROSS-REFERENCE TO RELATED REGISTRATIONS The present disclosure is based on Chinese patent application No. 2023214967433, filed on June 12, 2023, and claims priority of that Chinese patent application, which is incorporated herein in its entirety by reference. TECHNICAL AREA The present disclosure relates to the field of vehicle design technologies, in particular a differential, a powertrain and a vehicle. BACKGROUND In a related technology, a vehicle's differential has only the function of implementing differential rotation with one wheel end and synchronous rotation with the other wheel end by disengaging or locking a differential lock. Therefore, the problem is that of a single function. SUMMARY The present disclosure aims to solve at least one of the technical problems of existing technologies. Therefore, the present disclosure provides a differential, a drivetrain, and a vehicle to implement functions of coupling or decoupling with a wheel end and differential or synchronous rotation with the wheel end. Furthermore, the level of integration is high and the space requirement is small. According to a first aspect, the present revelation provides a differential, comprising: a wheel end decoupler and a differential lock that are integrated; wherein the wheel end decoupler and the differential lock are configured to implement coupling with a wheel end, to implement decoupling from the wheel end, to implement differential rotation with the wheel end, and to implement synchronous rotation with the wheel end. According to the differential provided in embodiments of the present disclosure, functions of coupling or decoupling with the wheel end and coupling or decoupling with a differential housing can be implemented, and the level of integration is high and the space requirement is small. According to one embodiment of the present disclosure, the differential comprises: a differential gear, wherein the wheel end decoupler and the differential lock are arranged on two sides of the differential gear. According to one embodiment of the present disclosure, the differential comprises: a differential gear wherein the wheel end decoupler and the differential lock are arranged on the same side of the differential gear. According to one embodiment of the present disclosure, the differential comprises: a differential housing, wherein the differential housing comprises a first sub-housing and a second sub-housing; the wheel end decoupler is housed in the first sub-housing and the differential lock is housed in the second sub-housing. According to one embodiment of the present disclosure, the differential housing is connected to the differential gear, and the differential comprises: a first half-shaft, wherein a first end of the wheel end decoupler is connected to the first half-shaft and a second end of the wheel end decoupler can be selectively connected to the differential gear; and a second half-shaft, wherein the second half-shaft is connected to the differential gear. According to one embodiment of the present disclosure, the differential lock is configured to implement a connection between the second half-shaft and the differential housing, and to implement a separation between the second half-shaft and the differential housing. According to one embodiment of the present disclosure, the differential gear comprises: a first half-shaft wheel and a second half-shaft wheel, wherein the second half-shaft wheel is connected to the second half-shaft and the wheel end decoupler can be selectively connected to the first half-shaft wheel. According to one embodiment of the present disclosure, the wheel end decoupler comprises: a first engagement section, wherein the first engagement section is configured to be connected to the first half-wave; and a decoupling mechanism, wherein the decoupling mechanism is configured to drive the first engagement section and can be selectively connected to the first half-shaft wheel. According to one embodiment of the present disclosure, the first engagement section is located in the differential housing and the decoupling mechanism is located on a first side of the differential housing. According to one embodiment of the present disclosure, the decoupling mechanism comprises: a decoupling drive disk, wherein the decoupling drive disk has a first working surface and distances between different positions located on the first working surface and in the circumferential direction and the first half-shaft wheel are different; a push rod, wherein the push rod lies between the first working surface and the first engagement section; and a first actuator, wherein the first actuator is configured to switch a synchronization state between the first half-shaft wheel and the first engagement section. According to one embodiment of the present disclosure, the decoupling drive disk is movably mounted on the differential housing, and the first actuator is an attraction device configured to attract the decoup