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Disconnected differential mechanism and electric drive transmission system with same

A differential, disconnected technology, applied in the direction of differential transmission, transmission, clutch, etc.

Pending Publication Date: 2022-07-05
XPT EDS (HEFEI) CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The present invention aims to solve the above-mentioned technical problems, that is, to solve the state that the existing disconnected differential cannot realize the reverse power transmission such as coasting while ensuring the differential speed of the normal differential and the forward and reverse power transmission functions. In the case of selectively interrupting power transmission from time to time, it can also avoid the problem of NVH when combining

Method used

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  • Disconnected differential mechanism and electric drive transmission system with same
  • Disconnected differential mechanism and electric drive transmission system with same
  • Disconnected differential mechanism and electric drive transmission system with same

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Embodiment Construction

[0027] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principle of the present invention, and are not intended to limit the protection scope of the present invention. Those skilled in the art can adjust it as needed to adapt to specific applications.

[0028]It should be noted that, in the description of the present invention, the terms of the direction or positional relationship indicated by the terms "left", "right", etc. are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, not Any indication or implication that the device must have a particular orientation, be constructed and operate in a particular orientation should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for ...

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Abstract

The invention relates to the field of vehicle electric drive transmission systems, in particular to a disconnected differential mechanism and an electric drive transmission system with the disconnected differential mechanism. The disconnected differential mechanism comprises a first one-way clutch, a second one-way clutch and an interrupting device, and the first one-way clutch and the second one-way clutch are opposite in locking direction and coaxially arranged between a planet carrier and a differential mechanism shell in a sleeving mode. The interruption device comprises a power part and an interruption part, the power part is located on the inner wall of the speed reducer box, the interruption part is located on the differential shell, all rolling bodies of the one-way clutch locked under the forward rotation sliding working condition can be shifted under the action of the power part, and the locking function of the one-way clutch is selectively relieved. Therefore, when the functions of differential, forward and reverse power transmission and the like of a normal differential mechanism are achieved, power transmission can be selectively interrupted when a vehicle is in the state of reverse power transmission such as sliding, the structure is novel, the operation precision is high, and meanwhile the NVH problem during combination can be avoided.

Description

technical field [0001] The present invention relates to the field of vehicle electric drive transmission system, and in particular provides a disconnected differential and an electric drive transmission system having the disconnected differential. Background technique [0002] In order to reduce friction loss and avoid the resistance torque generated by the back-EMF of the permanent magnet motor, thereby saving energy consumption and increasing the cruising range, it is often necessary to add a power interruption mechanism to the single-speed electric powertrain products mounted on the vehicle. The electric powertrain is disconnected from the wheels when the vehicle is coasting or when the output of the electric powertrain is not required. Such a power interruption mechanism is preferably located close to the wheel drive shaft to minimize vehicle load and friction losses. The commonly used power interruption mechanism is generally set in the differential assembly, called th...

Claims

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Application Information

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IPC IPC(8): F16H48/08F16H48/20F16H48/24F16H48/38F16D41/067F16D41/08
CPCF16H48/08F16H48/20F16H48/24F16H48/38F16D41/067F16D41/088B60K17/16B60K17/26B60K23/04F16D2041/0665F16D27/108B60K2023/046F16H48/06F16H48/40F16H57/0006F16H2048/202
Inventor 范鑫黄正诚
Owner XPT EDS (HEFEI) CO LTD
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