CN216121999U

CN216121999U - Motor structure with rear support and integrated flywheel housing and motor body

Info

Publication number: CN216121999U
Application number: CN202121826162.2U
Authority: CN
Inventors: 廖子富; 毛正松; 吴苾曜; 陈涛; 欧阳石坤; 吴天华; 司政勇; 曾强; 林志强
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2022-03-22
Anticipated expiration: 2031-08-06

Abstract

The utility model provides a motor structure with a rear support and integrated flywheel housing and a motor body, wherein a rear end cover extends forwards to form a support shaft, the support shaft is provided with a rolling bearing inner ring, a rotor assembly is provided with a rolling bearing outer ring, the motor housing and an engine flywheel housing are integrated into a whole, a rotary transformer is arranged between the rotor assembly and an engine body, the motor housing is connected with the engine body through a second bolt, a water channel is arranged in the motor housing, and the water channel is of an annular structure with more than 2. The utility model has better supporting effect and more compact integral structure, and can ensure that the temperature of the motor can be kept to work at proper temperature.

Description

Motor structure with rear support and integrated flywheel housing and motor body

Technical Field

The utility model relates to the technical field of range extenders of new energy vehicles, in particular to a motor structure with a rear support and integrated flywheel housing and a motor body.

Background

The extended range electric vehicle is characterized in that the whole vehicle can achieve all power performances in a pure electric mode, and when the vehicle-mounted rechargeable battery cannot meet the driving range requirement, the vehicle-mounted auxiliary power generation device is turned on to provide electric energy for the power system so as to prolong the driving range. The range extending type electric automobile has a range extender which generally comprises an engine and a generator, charges a power battery of the automobile and can directly drive a motor to run.

The range extender mainly comprises an engine and a generator, the bottleneck problem restricting the wide application of the range extender is the lack of the generator with high efficiency, high reliability and stable output voltage, the connection mode of the generator determines the conversion efficiency of energy, the structure and the weight of the range extender are influenced, and the structural arrangement and the performance of the whole vehicle are further influenced.

The range extender can effectively solve the problem of mileage anxiety of the pure electric vehicle and becomes the development trend of new energy vehicles. The range extender is generally composed of an engine + a generator. For example, chinese patent CN108995542A discloses a range extender for an electric vehicle with an integrated motor. This motor integrated form is range extender for electric automobile includes: an engine body; an engine output shaft; a connecting plate; and a generator comprising: the motor comprises a rotary transformer, a motor rotor assembly, a motor stator assembly, a motor shell and a motor rear cover, wherein the motor shell is fixed on a connecting plate, and the motor stator assembly is put into the motor shell from the front end of the motor shell and is sleeved on the motor shell in a hot manner; the motor rotor assembly is coaxially disposed within the motor stator assembly and has a motor rotor support that extends into the connection plate and is directly connected to the engine output shaft, the resolver comprising: a resolver stator and a resolver rotor. The rotary transformer rotor is arranged on the motor rotor bracket, and the rotary transformer stator is arranged on the connecting plate.

The structure still has some defects, the flywheel shell and the motor shell of the engine are designed in a split way, the installation is complex, and the volume is large; the rear end of the motor is not provided with a support, so that the motor is unstable in operation; the motor is not provided with a good cooling structure and is easy to overheat.

SUMMERY OF THE UTILITY MODEL

The utility model provides a motor structure with a rear support and integrated flywheel housing and motor body, which has better support effect and more compact integral structure and can ensure that the temperature of the motor can be kept at a proper temperature for working.

In the present invention, the front end refers to the front end in the power transmission direction, that is, the engine is located at the front end, and the rear end cover is located at the rear end.

A motor structure with a rear support and integrated flywheel housing and a motor body comprises an engine body, a crankshaft, a first bolt, a second bolt, a motor housing, a rotary transformer, a stator assembly, a rotor assembly, a third bolt, a rear end cover and a rolling bearing, wherein the rotor assembly is connected with the crankshaft through the first bolt, the rear end cover is connected with the rear end of the motor housing through the third bolt,

the rear end cover extends forwards to form a support shaft, the support shaft is provided with the rolling bearing inner ring, the rotor assembly is provided with the rolling bearing outer ring, and the support structure adopting the rolling bearing outer ring rotation and the inner ring fixation has better support effect.

The motor casing and the engine flywheel casing are integrated into a whole, the structure is compact, and the installation procedures are reduced.

The rotary transformer is arranged between the rotor assembly and the engine body, so that the axial length of the motor is reduced, and the structure is more compact.

The motor casing pass through the second bolt with engine body connects, motor casing inside is provided with the water course, the water course constructs for the annular structure more than 2. The motor shell adopts a multi-ring-shaped water channel with better cooling effect, and the temperature of the motor can be ensured to be kept at proper temperature for working. The water channel is completely integrated inside the motor shell, and a water inlet and a water outlet are processed outside the motor shell and connected with an external cooling system.

Preferably, the support shaft is configured as a hollow shaft, which contributes to a reduction in the weight of the support structure.

Preferably, the inner wall of the rotor assembly is provided with a limiting boss, and the limiting boss is abutted to the rolling bearing. The installation of antifriction bearing can be guaranteed to spacing boss and firm, ensures that motor bearing structure supports stably, and the motor operation is more steady.

Preferably, the water channel and the motor casing are integrally cast. The casting mode is adopted for one-time casting molding, and the die does not need to be matched with other parts, and is convenient to install and simple in structure.

Drawings

Fig. 1 is a schematic cross-sectional structural view of a motor structure with a rear support and integrated flywheel housing and motor body.

Fig. 2 is a schematic view of the mounting structure of the rolling bearing according to the present invention.

Fig. 3 is a schematic diagram of a waterway in accordance with the present invention.

In the figure: 1. the engine comprises an engine body, 2, a crankshaft, 3, a first bolt, 4, a second bolt, 5, a motor shell, 501, a water channel, 6, a rotary transformer, 7, a stator assembly, 8, a rotor assembly, 801, a limiting boss, 9, a third bolt, 10, a rear end cover, 1001, a support shaft, 11 and a rolling bearing.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and detailed description, wherein the exemplary embodiments and descriptions are provided for illustration of the utility model and not for limitation of the utility model.

In the description of the present invention, it is to be understood that the terms "left", "right", "upper", "lower", "front", "rear", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that a device or structure referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

Example 1:

as shown in fig. 1, a motor structure with a rear support and integrated flywheel housing and motor body comprises an engine body 1, a crankshaft 2, a first bolt 3, a second bolt 4, a motor housing 5, a rotary transformer 6, a stator assembly 7, a rotor assembly 8, a third bolt 9, a rear end cover 10 and a rolling bearing 11, wherein the rotor assembly 8 is connected with the crankshaft 2 through the first bolt 3, the rear end cover 10 is connected with the rear end of the motor housing 5 through the third bolt 9,

as shown in fig. 2, the rear end cover 10 is provided with a support shaft 1001 extending forward, the support shaft 1001 is provided with an inner ring of the rolling bearing 11, the rotor assembly 8 is provided with an outer ring of the rolling bearing 11, the motor housing 5 and the engine flywheel housing are integrated, the resolver 6 is provided at a position between the rotor assembly 8 and the engine body 1, the motor housing 5 is connected with the engine body 1 by a second bolt 4,

as shown in fig. 3, a water channel 501 is disposed inside the motor casing 5, and the water channel 501 is configured as an annular structure with 2 or more.

The working principle of the embodiment is as follows: the motor is a generator, and the power transmission path is as follows: the engine crankshaft 2 outputs power, the engine crankshaft 2 is connected to drive a motor rotor to rotate, a generator generates power and is used for driving a vehicle, electric energy is output to a generator controller through a cable, the electric energy is output through the generator controller to be used by the whole vehicle, and meanwhile the motor is cooled through a water channel 501.

Example 2:

as shown in fig. 2, the rear end cap 10 is provided with a support shaft 1001 extending forward, the support shaft 1001 is provided with an inner ring of the rolling bearing 11, the rotor assembly 8 is provided with an outer ring of the rolling bearing 11, and the support structure adopting the rotation of the outer ring and the fixation of the inner ring of the rolling bearing 11 has a better support effect.

The motor casing 5 and the engine flywheel casing are integrated, the structure is compact, and the installation procedures are reduced.

The rotary transformer 6 is arranged between the rotor assembly 8 and the engine body 1, so that the axial length of the motor is reduced, and the structure is more compact

As shown in fig. 3, in the present embodiment, the motor case 5 is connected to the engine body 1 by a second bolt 4, a water channel 501 is provided inside the motor case 5, and the water channel 501 is configured as an annular structure with 2 or more. The motor shell 5 adopts a multi-ring-shaped water channel 501 with better cooling effect, so that the motor can be ensured to work at a proper temperature. The water channel 501 is completely integrated inside the motor housing 5, and a water inlet and a water outlet are processed outside the motor housing 5 and connected with an external cooling system.

In this embodiment, the support shaft 1001 is configured as a hollow shaft, which is beneficial to reduce the weight of the support structure.

In this embodiment, the inner wall of the rotor assembly 8 is provided with a limiting boss 801, and the limiting boss 801 is abutted to the rolling bearing 11. The limiting boss 801 can ensure that the rolling bearing 11 is stably installed, the supporting stability of the motor supporting structure is ensured, and the motor runs more stably.

In this embodiment, the water channel 501 and the motor case 5 are integrally cast. The casting mode is adopted for one-time casting molding, and the die does not need to be matched with other parts, and is convenient to install and simple in structure.

Claims

1. The utility model provides a take rear support and flywheel housing and motor body integrated motor structure, includes engine body (1), bent axle (2), first bolt (3), second bolt (4), motor housing (5), resolver (6), stator module (7), rotor subassembly (8), third bolt (9), rear end cap (10) and antifriction bearing (11), rotor subassembly (8) through first bolt (3) with bent axle (2) are connected, rear end cap (10) through third bolt (9) with motor housing (5) rear end is connected, its characterized in that: rear end housing (10) extend to the place ahead and be provided with back shaft (1001), back shaft (1001) installation antifriction bearing (11) inner circle, rotor subassembly (8) installation antifriction bearing (11) outer lane, motor casing (5) and engine flywheel shell are integrated as an organic whole, resolver (6) set up rotor subassembly (8) with position between engine body (1), motor casing (5) through second bolt (4) with engine body (1) are connected, motor casing (5) inside is provided with water course (501), water course (501) structure is the annular structure more than 2.

2. The motor structure with the rear support and the flywheel housing integrated with the motor body as claimed in claim 1, wherein: the support shaft (1001) is designed as a hollow shaft.

3. The motor structure with the rear support and the flywheel housing integrated with the motor body as claimed in claim 1 or 2, wherein: the inner wall of the rotor assembly (8) is provided with a limiting boss (801), and the limiting boss (801) is abutted to the rolling bearing (11).

4. The motor structure with the rear support and the flywheel housing integrated with the motor body as claimed in claim 1 or 2, wherein: the water channel (501) and the motor shell (5) are integrally cast and formed.