CN216490031U

CN216490031U - Motor casing with water-cooling structure

Info

Publication number: CN216490031U
Application number: CN202122482435.2U
Authority: CN
Inventors: 周结玩; 罗良; 徐旭东; 林国峰
Original assignee: Ningbo Xusheng Auto Technology Co Ltd
Current assignee: Ningbo Xusheng Group Co ltd
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2022-05-10
Anticipated expiration: 2031-10-14

Abstract

The utility model relates to a motor shell with a water cooling structure, which comprises an inner shell and an outer shell sleeved outside the inner shell, wherein a gap is reserved between the bottom of the inner shell and the bottom of the outer shell, and the motor shell is characterized in that: a cooling channel for flowing of cooling liquid is arranged on the inner shell or the outer shell, and a communication opening capable of communicating the cooling channel with the gap is arranged on the inner shell or the outer shell; compared with the prior art, the utility model has the advantages that: the cooling channel is provided with the communicating port, so that the gap between the bottoms of the inner shell and the outer shell can be communicated with the cooling channel through the communicating port, and the phenomenon of air blowby can be effectively avoided when the air tightness of the cooling channel is detected, so that the air tightness of the cooling channel is prevented from being misjudged; in addition, air in the assembly time gap can be discharged outwards through the communication port, and the structure is simple and easy to implement.

Description

Motor casing with water-cooling structure

Technical Field

The utility model relates to the technical field of motor housings, in particular to a motor housing with a water cooling structure.

Background

With the rapid development of the new energy automobile industry in recent years, the motor product serving as a main output structure of automobile power is continuously updated; the motor needs to be radiated because a large amount of heat is generated during the operation of the motor, and the overall performance of the motor can be enhanced due to a good radiating structure; the existing motor heat dissipation structure adopts water-cooled heat dissipation, a spiral water channel is directly arranged on a shell of a motor, and cooling liquid flows in the water channel to take away heat so as to achieve the purpose of heat dissipation; as the Chinese utility model 'Motor shell water-cooling structure' with patent number ZL201920419993.4, the utility model discloses a water-cooling structure, which comprises a motor shell and an inner water jacket arranged in the motor shell, the motor shell and a reducer box body are of an integral structure, the motor shell and the reducer box body are separated by an arranged partition wall, a motor front bearing seat is arranged on the partition wall, a water passing groove spirally surrounding the circumference is arranged on the outer circumference of the inner water jacket, a boss is arranged on the end wall at one end of the inner water jacket, an assembly through hole is arranged at the center of the boss, the end wall of the inner water jacket is fixed with the motor front bearing seat in an interference fit way through the assembly through hole, the fit joint at the position is sealed by welding, the other end of the inner water jacket is fixed with the motor shell in an interference fit way, the fit joint at the position is sealed by welding, and the front end side wall of the motor shell is provided with a water inlet, the side wall of the rear end is provided with a water outlet, and the water inlet and the water outlet are communicated with the water through groove of the inner water jacket to form a closed cooling water channel.

Although this structure provides a good heat dissipation effect, the following drawbacks also exist: during assembly, the bottom of the outer shell is not arranged in an open manner but is provided with a partition, when the inner shell is assembled from the top, a gap exists between the bottom of the inner shell and the bottom of the outer shell, and the inner shell and the outer shell are assembled in an interference fit manner, so that air in the gap cannot be discharged; in addition, after the assembly is finished, the air tightness of the water channel needs to be detected, and the phenomenon of air blowby between the water channel and the gap can occur due to the existence of the gap during the detection, so that the air tightness of the cooling channel is misjudged; for this reason, further improvements to the prior art are needed.

Disclosure of Invention

The present invention provides a motor housing with a water cooling structure, which can avoid misjudgment of air tightness detection of a cooling channel, in view of the above technical situation.

The technical scheme adopted by the utility model for solving the technical problems is as follows: this motor casing with water-cooling structure, establish including interior casing and cover the outer shell body of inner shell body is external, interior casing with leave clearance, its characterized in that between the bottom of shell body: and a cooling channel for flowing of cooling liquid is arranged on the inner shell or the outer shell, and a communication port capable of communicating the cooling channel with the gap is arranged on the inner shell or the outer shell.

Preferably, the communication port includes an inlet through which the cooling fluid enters the gap and an outlet through which the cooling fluid flows out of the gap. The provision of the inlet and outlet enables the coolant to enter and exit the gap to better dissipate heat from the motor housing.

In order to better allow the cooling liquid to flow into the cooling channel, preferably, the cooling channel includes a water inlet end and a water outlet end, and correspondingly, a liquid inlet communicated with the water inlet end and a liquid outlet communicated with the water outlet end are arranged on the outer shell.

In order to reduce the resistance of the cooling liquid flowing through the cooling channel, the cooling channel is preferably helical and arranged along the axis of the inner shell or the outer shell.

Compared with the prior art, the utility model has the advantages that: the cooling channel is provided with the communication port, so that the gap between the bottoms of the inner shell and the outer shell can be communicated with the cooling channel through the communication port, and the phenomenon of air blowby can be effectively avoided when the air tightness of the cooling channel is detected, so that the air tightness of the cooling channel is prevented from being misjudged; in addition, air in the assembly time gap can be discharged outwards through the communication port, and the structure is simple and easy to implement.

Drawings

Fig. 1 is a partial sectional view of a motor housing having a water-cooled structure according to an embodiment of the present invention;

FIG. 2 is a bottom view of the inner housing in an embodiment of the present invention;

fig. 3 is an exploded view of a motor housing having a water-cooled structure according to an embodiment of the present invention.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

As shown in FIGS. 1 to 3, the preferred embodiment of the present invention is shown. The motor casing with water-cooling structure of this embodiment, including interior casing 1 and the shell body 2 of cover establishing outside interior casing 1, leave clearance 3 between the bottom of interior casing 1 and shell body 2, be provided with cooling channel 4 that supplies the coolant liquid to flow on interior casing 1 or the shell body 2 to be provided with the intercommunication mouth 41 that can communicate cooling channel 4 and clearance 3 on interior casing 1 or the shell body 2, intercommunication mouth 41 is including the import 411 that the coolant liquid got into clearance 3 and the export 412 that supplies the coolant liquid to flow from clearance 3. The cooling channel 4 is provided with the communication port 41, so that the gap 3 between the bottom of the inner shell 1 and the bottom of the outer shell 2 can be communicated with the cooling channel 4 through the communication port 41, and the phenomenon of air blow-by can be effectively avoided when the air tightness of the cooling channel 4 is detected, so that the air tightness of the cooling channel 4 is prevented from being misjudged; in addition, air in the gap 3 can be discharged outward through the communication port 41 at the time of assembly; while the communication port 41 including the inlet 411 and the outlet 412 allows the coolant to enter and exit the gap 3, thereby better dissipating heat from the motor housing.

In order to accelerate the cooling speed, the cooling channel 4 of the present embodiment includes a water inlet end 42 and a water outlet end 43, and correspondingly, the outer casing 2 is provided with a liquid inlet 21 communicated with the water inlet end 42 and a liquid outlet 22 communicated with the water outlet end 43; in addition, the cooling channel 4 is helical and arranged along the axis of the inner casing 1 or the outer casing 2. Wherein, the coolant liquid of circulation flow can take away the heat fast for refrigerated speed.

In summary, the motor housing with the water cooling structure is used as follows: sleeving the outer shell 2 outside the inner shell 1 through interference fit;

A. when assembling, the air in the gap 3 between the outer case 2 and the bottom of the inner case 1 is discharged to the outside through the communication port 41;

B. since the cooling channel 4 is already communicated with the gap 3, when the air tightness of the cooling channel 11 is detected, the phenomenon of misjudgment caused by the blow-by of the cooling channel 4 and the gap 3 is avoided;

C. when the motor shell needs to be cooled, cooling liquid enters the cooling channel 11 from the liquid inlet 21 and flows out from the liquid outlet 22 to take away heat on the surface of the inner shell 1, so that the heat dissipation process is completed;

D. in addition, the communication port 41 formed by the inlet 411 and the outlet 412 enables the cooling liquid to enter the gap 3 from the inlet 411, and after absorbing heat, the cooling liquid flows out from the outlet 412 to dissipate heat to the bottom of the motor housing.

Claims

1. The utility model provides a motor casing with water-cooling structure, establishes including interior casing (1) and cover interior casing (1) outer shell body (2), interior casing (1) with leave clearance (3), its characterized in that between the bottom of shell body (2): the cooling channel (4) for cooling liquid to flow is arranged on the inner shell (1) or the outer shell (2), and a communication port (41) capable of communicating the cooling channel (4) with the gap (3) is arranged on the inner shell (1) or the outer shell (2).

2. The motor housing having a water-cooling structure according to claim 1, wherein: the communication opening (41) comprises an inlet (411) for the cooling liquid to enter the gap (3) and an outlet (412) for the cooling liquid to flow out of the gap (3).

3. The motor housing having a water-cooling structure according to claim 2, wherein: the cooling channel (4) comprises a water inlet end (42) and a water outlet end (43), and correspondingly, a liquid inlet (21) communicated with the water inlet end (42) and a liquid outlet (22) communicated with the water outlet end (43) are arranged on the outer shell (2).

4. The motor housing having a water-cooling structure according to claim 3, wherein: the cooling channel (4) is spiral and is arranged along the axis of the inner shell (1) or the outer shell (2).