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Electric car powertrain

A powertrain and electric vehicle technology, applied in gearboxes, motor transmission technology, and automotive powertrain fields, can solve the problems of large powertrain volume, complex structure, low transmission efficiency, etc., and achieve less kinetic energy loss and high transmission efficiency High and highly integrated effect

Active Publication Date: 2015-11-11
谷伟
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose an electric vehicle powertrain solution with smaller volume and simpler structure in view of the above-mentioned problems of large volume, complex structure and low transmission efficiency of the current electric vehicle powertrain

Method used

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  • Electric car powertrain
  • Electric car powertrain
  • Electric car powertrain

Examples

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Embodiment Construction

[0022] refer to figure 1 , this figure shows a simple schematic diagram of an embodiment of the automobile power assembly of the present invention, the power assembly is mainly composed of two major parts of the motor 19 and the differential 18, the differential 18 is located at the front end of the motor, and the motor rotor The shaft 16 adopts a hollow structure design, and the front end of the hollow rotor central shaft 16 is directly fixedly connected with the differential case 5 to realize the power transmission between the motor rotor central shaft and the differential. The differential rear output shaft 14 is arranged in the rotor central shaft 16 through a bearing, and the differential rear output shaft 14 is coaxial with the rotor central shaft 16 . The output shafts on the front and rear sides of the differential are respectively used to connect the wheel drive shafts.

[0023] The inner side of the motor rear end cover 10 is provided with a bearing seat for assembl...

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Abstract

The invention belongs to the field of car driving technology, and discloses an electric car powertrain. The electric car powertrain comprises one or two motors and differential mechanisms, a middle shaft of a motor rotor is a hollow shaft, output shafts at one or two sides of a differential mechanism penetrate the middle shaft of one motor or respectively penetrate middle shafts of two motors, and the middle shafts of the motor rotors are connected with a housing of the differential mechanism. According to the electric car powertrain, the hollow shafts are employed to be the middle shafts of the motor rotors, and at least one output shaft of the differential mechanism is assembled in the middle shafts of the rotors. Compared with a present electric car powertrain having motors and differential mechanisms in parallel, the maximal difference is that the motors and the differential mechanisms are integrated, the transverse space occupation of the powertrain is small, no radial shearing force exists between the middle shafts of the motors and the output shafts of the differential mechanisms, the power loss is low during power transmission, and the transmission efficiency is high.

Description

technical field [0001] The invention belongs to the field of automobile driving and relates to automobile power assembly, motor cooling technology, motor transmission technology and gearbox technology. Background technique [0002] The powertrain of an electric vehicle mainly includes an electric motor and a differential, and the electric motor is also connected to the differential through a reduction gear set. In the powertrain of an existing electric vehicle (such as Tesla and other brands), the differential The output shaft of the motor is arranged parallel to the central axis of the rotor of the motor, and the motor and the differential are arranged side by side. The motor is located on one side of the output shaft of the differential and occupies a relatively large volume. The middle shaft of the motor rotor is connected with the differential through a gear set. The structure is complex and the transmission efficiency is low. Contents of the invention [0003] The p...

Claims

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Application Information

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IPC IPC(8): B60K17/12B60K17/16
Inventor 谷伟
Owner 谷伟
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