CN216122041U

CN216122041U - Range extender structure with annular water channel and rotary transformer front-mounted device

Info

Publication number: CN216122041U
Application number: CN202121839147.1U
Authority: CN
Inventors: 杨军; 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 range extender structure with an annular water channel and a rotary transformer preposed installation structure.A motor shell is provided with the annular water channel, the longitudinal section of the water channel is in a strip shape, the axial length of the water channel is 0.9-1.1 times of the length of a stator component, and the installation position of a rotary transformer is positioned between an engine body and a rotor component. The motor has the advantages of good heat dissipation effect, simple structure, compact space, mature and simple process and optimal cost.

Description

Range extender structure with annular water channel and rotary transformer front-mounted device

Technical Field

The utility model relates to the technical field of range extenders for new energy vehicles, in particular to a range extender structure with an annular water channel and a rotary transformer mounted in front.

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 shortcomings, and the motor shell is not provided with a good cooling structure and is easy to overheat.

SUMMERY OF THE UTILITY MODEL

The utility model provides a range extender structure with an annular water channel and a rotary transformer pre-mounted structure, which has the advantages of good heat dissipation effect of a motor, simple structure, compact space, mature and simple process and optimal cost.

The fore-aft direction of the present invention is defined as the engine block being forward and the rear end cover being rearward.

The utility model comprises an engine body, a crankshaft, a first bolt, a connecting plate, a motor shell, a stator assembly, a rotor assembly, a second bolt, a rear end cover, a rotary transformer and a third bolt, wherein the rear end cover is fixedly connected with the rear end of the motor shell through the second bolt, the connecting plate is fixed on the motor shell through the third bolt, and the connecting plate is connected with the engine body through the first bolt, so that the whole engine is short in length and simple and reliable in development.

The crankshaft extends out of the engine body to the rear of the connecting plate and is fixedly connected with the rotor assembly, the stator assembly and the rotor assembly are coaxially arranged and are arranged inside the motor shell, and the motor is rigidly and directly connected with the engine crankshaft, so that the structure is simple.

The motor shell is provided with the single annular water channel, the motor shell is mature and simple in process, optimal in cost and good in heat dissipation effect, and the longitudinal section of the water channel is in a long strip shape, the axial length of the water channel is 0.9-1.1 times of the length of the stator component. The axial length of the water channel is 0.9-1.1 times of the length of the stator assembly, so that the water channel basically covers the stator assembly in the axial direction, the cooling effect is good, and the mounting positions of the second bolt and the third bolt are ensured to be sufficient.

The mounting position of the rotary transformer is positioned between the engine body and the rotor assembly, the structure is simple, and the space is compact

Preferably, the water passage is arranged outside the stator assembly in a superposed manner as viewed in the axial direction. The water channel can completely cover the stator assembly, and the cooling effect is good.

Preferably, the water channel is integrated in the motor shell, and the motor shell is provided with a water inlet and a water outlet communicated with the water channel. The water inlet and the water outlet are connected with an external cooling system, the water channel is formed by casting in one step without being matched with other parts, and the cost is low.

Drawings

FIG. 1 is a cross-sectional structural view of a belt-shaped water channel and a range extender structure mounted in a rotary-transformer preposed manner.

Fig. 2 is a structural diagram of the water channel of the present invention, namely, a schematic diagram of a motor casing with an outer casing cut away.

In the figure: 1-an engine body, 2-a crankshaft, 3-a first bolt, 4-a connecting plate, 5-a motor shell, 6-a stator assembly, 7-a rotor assembly, 8-a second bolt, 9-a rear end cover, 10-a rotary transformer, 11-a third bolt and 12-a water channel.

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 range extender structure with an annular water channel and a rotary transformer pre-mounted structure comprises an engine body 1, a crankshaft 2, a first bolt 3, a connecting plate 4, a motor casing 5, a stator assembly 6, a rotor assembly 7, a second bolt 8, a rear end cover 9, a rotary transformer 10 and a third bolt 11, wherein the rear end cover 9 is fixedly connected with the rear end of the motor casing 5 through the second bolt 8, the connecting plate 4 is fixed on the motor casing 5 through the third bolt 11, the connecting plate 4 is connected with the engine body 1 through the first bolt 3, the crankshaft 2 extends out of the engine body 1 to the rear of the connecting plate 4 and is fixedly connected with the rotor assembly 7, the stator assembly 6 and the rotor assembly 7 are coaxially arranged and are all arranged in the motor casing 5,

as shown in fig. 2, an annular water channel 12 is formed in the motor housing 5, the longitudinal section of the water channel 12 is configured to be long, the axial length of the water channel 12 is 0.9 times the length of the stator assembly 6, and it is ensured that the reserved installation positions of the second bolt 8 and the third bolt 11 are sufficient.

As shown in fig. 1, the resolver 10 is installed between the engine body 1 and the rotor assembly 7.

The working principle of the utility model is that the output power of the crankshaft 2 is transmitted to the rotor assembly 7 rigidly connected with the crankshaft 2, the rotor assembly 7 and the electromagnetic generator of the stator assembly 6 generate electricity, the electric energy is output to the generator controller through a cable, and finally the electric energy is output for the whole vehicle through the generator controller.

Example 2:

as shown in fig. 1, the present embodiment includes an engine body 1, a crankshaft 2, a first bolt 3, a connecting plate 4, a motor casing 5, a stator assembly 6, a rotor assembly 7, a second bolt 8, a rear end cover 9, a rotary transformer 10 and a third bolt 11, the rear end cover 9 is fixedly connected to the rear end of the motor casing 5 through the second bolt 8, the connecting plate 4 is fixed to the motor casing 5 through the third bolt 11, and the connecting plate 4 is connected to the engine body 1 through the first bolt 3, so that the overall length is short, and the development is simple and reliable.

In this embodiment, the crankshaft 2 extends out of the engine body 1 to the rear of the connecting plate 4 and is fixedly connected with the rotor assembly 7, the stator assembly 6 and the rotor assembly 7 are coaxially arranged and are both arranged inside the motor housing 5, and the motor is rigidly and directly connected with the engine crankshaft 2, so that the structure is simple.

As shown in fig. 2, in the present embodiment, an annular water channel 12 is disposed on the motor housing 5, a longitudinal cross section of the water channel 12 is configured in a long strip shape, an axial length of the water channel 12 is 1.1 times a length of the stator assembly 6, and the motor housing 5 having the single annular water channel 12 is disposed, so that the process is mature and simple, the cost can be optimized, and the heat dissipation effect is good. The axial length of the water channel 12 is 1.1 times of the length of the stator assembly 6, so that the water channel 12 can basically cover the stator assembly 6 in the axial direction, and the cooling effect is good.

In this embodiment, the mounting position of the rotary transformer 10 is located between the engine body 1 and the rotor assembly 7, so that the structure is simple and the space is compact

In the present embodiment, the water passage 12 is provided outside the stator assembly 6 in a superposed manner when viewed in the axial direction. The water channel 12 can completely cover the stator assembly 6, and the cooling effect is good.

In this embodiment, the water channel 12 is integrally formed inside the motor casing 5, and the motor casing 5 is provided with a water inlet and a water outlet communicated with the water channel 12. The water inlet and the water outlet are connected with an external cooling system, the water channel 12 is formed by casting in one step without being matched with other parts, and the cost is low.

Claims

1. The utility model provides a take annular water course and increase journey ware structure of leading installation of rotary transformer, includes engine body (1), bent axle (2), first bolt (3), connecting plate (4), motor casing (5), stator module (6), rotor subassembly (7), second bolt (8), rear end cap (9), rotary transformer (10) and third bolt (11), its characterized in that: rear end cap (9) are fixed with the rear end of motor casing (5) through second bolt (8), connecting plate (4) are fixed on the body of motor casing (5) through third bolt (11), and connecting plate (4) are connected with engine body (1) through first bolt (3), bent axle (2) are followed engine body (1) stretch out to connecting plate (4) rear and with rotor subassembly (7) fixed connection, stator module (6) with rotor subassembly (7) coaxial arrangement and all set up inside motor casing (5), be provided with an annular water course (12) on the body of motor casing (5), water course (12) longitudinal section structure is rectangular form, the axial length of water course (12) is 0.9 ~ 1.1 times stator module (6) length, resolver (10) mounted position is in engine body (1) with between the rotor subassembly (7) .

2. The belt ring waterway and rotary transformer forward-mounted range extender structure of claim 1, wherein: the water channel (12) is arranged outside the stator assembly (6) in an overlapping manner when viewed in the axial direction.

3. The belt ring waterway and rotary transformer forward-mounted range extender structure of claim 1 or 2, wherein: the water channel (12) is integrally arranged inside the motor shell (5), and a water inlet and a water outlet which are communicated with the water channel (12) are formed in the motor shell (5).