CN210852023U - Pure electric drive system with double motors and pure electric vehicle - Google Patents
Pure electric drive system with double motors and pure electric vehicle Download PDFInfo
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- CN210852023U CN210852023U CN201921613212.1U CN201921613212U CN210852023U CN 210852023 U CN210852023 U CN 210852023U CN 201921613212 U CN201921613212 U CN 201921613212U CN 210852023 U CN210852023 U CN 210852023U
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- hollow rotor
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Abstract
The utility model discloses a bi-motor electricelectric moves actuating system, including the solid shaft motor and the hollow shaft motor of coaxial arrangement, the output shaft of solid shaft motor runs through the hollow rotor of hollow shaft motor and is connected with the synchronous rotation of hollow rotor. The scheme makes full use of the inner space of the hollow rotor of the hollow shaft motor and realizes the coaxial installation and arrangement structure of the two motors, thereby further simplifying the structure of the double-motor pure electric system and being easier to install and arrange. The utility model also provides an electricelectric motor vehicle of including above-mentioned two electricelectric motor drive system.
Description
Technical Field
The utility model relates to an electric vehicle technical field especially relates to a pure electric drive system of bi-motor and pure electric vehicle.
Background
The pure electric drive system is a drive system with only a power battery as a unique power source. The existing dual-motor pure electric driving system adopts a parallel-shaft dual-motor driving system, specifically, two motors are installed side by side, and output shafts of the two motors are input into a rear axle after being meshed through gears. Wherein, two motors are common solid shaft motors, one is a low-speed large-torque motor, and the other is a high-speed motor.
In the prior art, because the two motors are installed in a side-by-side structure, the requirement on the installation and arrangement space on the vehicle is high, and the design requirement on the installation support is also high.
Therefore, how to design a dual-motor pure electric drive system which is easy to install and arrange is a technical problem which needs to be solved by the technical personnel in the field at present.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a pure electric drive system of bi-motor, this system simple structure, it is lower to the installation space requirement of arranging, easy installation and arrangement. Another object of the present invention is to provide a pure electric vehicle including the above dual-motor pure electric drive system.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the dual-motor pure electric driving system comprises a solid shaft motor and a hollow shaft motor which are coaxially arranged, wherein an output shaft of the solid shaft motor penetrates through a hollow rotor of the hollow shaft motor and is synchronously and rotatably connected with the hollow rotor.
Preferably, the output shaft is connected with the hollow rotor through a connecting sleeve in a synchronous rotating mode, a first rotation limiting structure is arranged between the output shaft and the connecting sleeve, and a second rotation limiting structure is arranged between the connecting sleeve and the hollow rotor.
Preferably, the first and second rotational limit structures are both splines.
Preferably, one end of the connecting sleeve, which extends out of the hollow rotor, is provided with a motor output flange.
The utility model provides a pure electric drive system of bi-motor, including the solid core shaft motor and the hollow shaft motor of coaxial arrangement, the output shaft of solid core shaft motor runs through the hollow rotor of hollow shaft motor and is connected with hollow rotor synchronous rotation. The scheme makes full use of the inner space of the hollow rotor of the hollow shaft motor and realizes the coaxial installation and arrangement structure of the two motors, thereby further simplifying the structure of the double-motor pure electric system and being easier to install and arrange.
The utility model also provides an electricelectric motor vehicle of including above-mentioned two electricelectric motor drive system. The derivation process of the beneficial effects of the pure electric vehicle is substantially similar to the derivation process of the beneficial effects brought by the dual-motor pure electric drive system, and therefore the derivation process is not repeated herein.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a coaxial arrangement structure of a solid shaft motor and a hollow shaft motor in an embodiment of the present invention.
In fig. 1:
1-solid shaft motor, 2-output shaft, 3-hollow shaft motor, 4-hollow rotor, 5-connecting sleeve and 6-motor output flange.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic view of a coaxial arrangement structure of a solid shaft motor and a hollow shaft motor according to an embodiment of the present invention.
The utility model provides a pure electric drive system of bi-motor, including the solid shaft motor 1 and the hollow shaft motor 3 of coaxial arrangement, output shaft 2 of solid shaft motor 1 runs through hollow rotor 4 of hollow shaft motor 3 and is connected with hollow rotor 4 synchronous rotation. The scheme makes full use of the inner space of the hollow rotor 4 of the hollow shaft motor 3, and realizes the coaxial installation and arrangement structure of the two motors, thereby further simplifying the structure of the double-motor pure electric system and being easier to install and arrange.
It should be noted that the output shaft 2 in this embodiment may be synchronously and rotatably connected to the hollow rotor 4 in a variety of ways, for example, through a flat key connection, a spline connection, or a connection way adopting an interference fit, and preferably, the output shaft 2 is synchronously and rotatably connected to the hollow rotor 4 through the connection sleeve 5, and a first rotation limiting structure is disposed between the output shaft 2 and the connection sleeve 5, and is used for limiting the relative rotation between the output shaft 2 and the connection sleeve 5; and a second rotation limiting structure is arranged between the connecting sleeve 5 and the hollow rotor 4 and used for limiting the relative rotation between the connecting sleeve 5 and the hollow rotor 4. Further preferably, the first rotation limiting structure and the second rotation limiting structure are both splines. Through the spline connection structure, the acting force between two parts that can make mutually supporting distributes more evenly, avoids local stress concentration to appear, extension part life.
It should be noted that, in this scheme, an independent connecting sleeve 5 can be arranged to connect the output shaft 2 and the hollow rotor 4, and an existing motor output flange can be modified, and the inner and outer walls of the connecting sleeve portion of the motor output flange are designed with a rotation limiting structure, such as a spline structure, which can also function to coaxially connect the output shaft 2 and the hollow rotor 4. Preferably, the end of the connecting sleeve 5 extending out of the hollow rotor 4 is provided with a motor output flange 6, as shown in fig. 1, the connecting sleeve 5 and the motor output flange 6 can be designed into an integral structure, the inner wall and the outer wall of the connecting sleeve 5 are both provided with a spline and other rotation limiting structures, the outer spline is connected with the hollow rotor 4, and the inner spline is connected with the solid output shaft 2.
The utility model also provides an electricelectric motor vehicle of including above-mentioned two electricelectric motor drive system. The derivation process of the beneficial effects of the pure electric vehicle is substantially similar to the derivation process of the beneficial effects brought by the dual-motor pure electric drive system, and therefore the derivation process is not repeated herein.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. The dual-motor pure electric driving system is characterized by comprising a solid shaft motor (1) and a hollow shaft motor (3) which are coaxially arranged, wherein an output shaft (2) of the solid shaft motor (1) penetrates through a hollow rotor (4) of the hollow shaft motor (3) and is synchronously and rotatably connected with the hollow rotor (4).
2. The double-motor pure electric driving system according to claim 1, wherein the output shaft (2) is synchronously and rotatably connected with the hollow rotor (4) through a connecting sleeve (5), a first rotation limiting structure is arranged between the output shaft (2) and the connecting sleeve (5), and a second rotation limiting structure is arranged between the connecting sleeve (5) and the hollow rotor (4).
3. The dual-motor electric-only drive system of claim 2, wherein the first and second rotational limit structures are both splines.
4. The dual-motor pure electric drive system according to claim 2 or 3, wherein one end of the connecting sleeve (5) extending out of the hollow rotor (4) is provided with a motor output flange (6).
5. A pure electric vehicle characterized by comprising the dual-motor pure electric drive system according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921613212.1U CN210852023U (en) | 2019-09-25 | 2019-09-25 | Pure electric drive system with double motors and pure electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921613212.1U CN210852023U (en) | 2019-09-25 | 2019-09-25 | Pure electric drive system with double motors and pure electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210852023U true CN210852023U (en) | 2020-06-26 |
Family
ID=71304289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921613212.1U Active CN210852023U (en) | 2019-09-25 | 2019-09-25 | Pure electric drive system with double motors and pure electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210852023U (en) |
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2019
- 2019-09-25 CN CN201921613212.1U patent/CN210852023U/en active Active
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