CN212627538U

CN212627538U - Water-cooling heat dissipation casing of driving motor

Info

Publication number: CN212627538U
Application number: CN202021879222.2U
Authority: CN
Inventors: 陈文龙; 王武广; 廖春琴
Original assignee: Xiamen Shituo Yuneng Technology Co Ltd
Current assignee: Xiamen Shituo Yuneng Technology Co Ltd
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2021-02-26
Anticipated expiration: 2030-09-01

Abstract

The utility model relates to the technical field of driving motors, in particular to a water-cooling heat dissipation casing of a driving motor, which comprises a casing body, wherein a hollow cavity for flowing cooling liquid and a plurality of ribs for guiding the cooling liquid are arranged on the casing body, and a plurality of stepped water channel grooves for flowing cooling liquid are formed between the ribs; the cooling machine shell comprises a machine shell body and is characterized in that a water inlet used for cooling liquid to enter and a water outlet used for cooling liquid to discharge are formed in the machine shell body, and the water inlet is communicated with the water outlet through a water channel groove. The coolant liquid flows from the water inlet into the stepped water channel groove in the hollow cavity and is discharged from the water outlet, the heat of the driving motor is taken away to dissipate heat and cool the driving motor, the coolant liquid flows in the stepped water channel groove in a reciprocating and circulating manner, and the stepped arrangement ensures that the coolant liquid in the water channel groove has certain flow velocity, so that the generation of vortex is reduced, the flowing resistance of the coolant liquid is reduced, meanwhile, the heat dissipation area is increased, and the heat dissipation efficiency of the driving motor is effectively improved.

Description

Water-cooling heat dissipation casing of driving motor

Technical Field

The utility model relates to a driving motor technical field, in particular to driving motor water-cooling casing.

Background

With the development of new energy automobiles, China insists on propelling electric automobiles, and the energy conservation and environmental protection wave of the electric automobiles is out of gear. The driving motor, one of the core "three-electric systems" of the electric vehicle, is moving toward high power density, higher efficiency, higher reliability and lower cost, with the consequent higher heat generation and more uneven temperature field distribution. The performance of the driving motor is reduced due to the overhigh temperature, and the driving motor is burnt in serious cases; the uneven temperature field can concentrate the local thermal stress of the driving motor, which affects the stability of the structure and can cause the structure to fail in serious cases.

The water-cooled shell of the driving motor realizes heat exchange by direct contact heat transfer with the outer wall surface of the stator, and takes away heat through cooling liquid flowing through a water channel. However, for the driving motor, as shown in fig. 1, the heat productivity of the stator core is distributed along the axial direction and is higher at two ends and lower at the middle, that is, the two ends of the motor are the relatively high temperature regions of the motor, and the middle of the motor is the relatively low temperature region of the motor.

The existing water cooling machine shell generally adopts two water channels, namely a zigzag water channel and a spiral water channel, wherein a water inlet of the traditional spiral water channel is positioned at one end of a motor, and a water outlet is positioned at the other end of the motor, for example, the water cooling machine shell and a vehicle of the motor disclosed by Chinese patent (with publication number of CN208638162U), the water cooling machine shell is the spiral water channel, but because the temperature at the two ends of the motor is higher, low-temperature cooling liquid enters the water channel from one end of the motor, is heated by the high temperature at one end and flows to the high temperature zone at the other end after flowing through the middle part, and the temperature of the cooling liquid is raised to a higher degree at the moment, the cooling effect at the water outlet end, namely the high temperature zone at the other end of the motor, is poor, so that the temperature. Although the inverted-V-shaped water channel can realize the back-and-forth flow of the cooling liquid, the flow resistance in the water channel is high due to the fact that the flow direction of the cooling liquid is changed for 180 degrees for multiple times, the flowing performance of the cooling liquid is poor, and eddy currents are easy to generate in the water channel, so that the heat dissipation efficiency is low.

SUMMERY OF THE UTILITY MODEL

For solving the not high not enough of above-mentioned prior art well water-cooling casing messenger driving motor radiating efficiency, the utility model provides a pair of driving motor water-cooling casing can improve driving motor's radiating efficiency.

The utility model provides a water-cooling heat dissipation casing of a driving motor, which comprises a casing body, wherein a hollow cavity for flowing cooling liquid and a plurality of ribs for guiding the cooling liquid are arranged on the casing body, and a plurality of stepped water channel grooves for flowing cooling liquid are formed between the ribs; the cooling machine shell comprises a machine shell body and is characterized in that a water inlet used for cooling liquid to enter and a water outlet used for cooling liquid to discharge are formed in the machine shell body, and the water inlet is communicated with the water outlet through a water channel groove.

Further, the casing body includes middle part casing, middle part casing is including tensile integrated into one piece's middle part shells outer wall and middle part shells inner wall, middle part shells outer wall with cavity formation between the middle part shells inner wall the cavity.

Furthermore, a plurality of ribs for guiding cooling liquid are arranged inside the hollow cavity.

Furthermore, the rib includes the switching-over rib, the one end of switching-over rib with middle part casing side be connected, the other end of switching-over rib with middle part casing side is not connected.

Furthermore, the reversing ribs comprise a first reversing rib and a second reversing rib, the first reversing rib is connected with one side edge of the middle shell, and the second reversing rib is connected with the other side edge of the middle shell.

Furthermore, the rib still includes the water conservancy diversion rib, the water conservancy diversion rib is located first switching-over rib with between the second switching-over rib, the both ends of water conservancy diversion rib all with the side of middle part casing is not connected.

Furthermore, the water conservancy diversion rib is relative the setting placed in the middle of middle part casing, first switching-over rib the water conservancy diversion rib with the second switching-over rib is the stairstepping setting in proper order.

Further, the casing body further comprises a front end cover and a rear end cover, and the front end cover and the rear end cover are used for blocking the cooling liquid to enable the cooling liquid to flow in a reversing reciprocating mode.

Furthermore, two side faces of the middle shell are annularly provided with sealing glue, and the middle shell is respectively sealed with the front end cover and the rear end cover through the sealing piece.

The utility model also provides a driving motor, including driving motor body and driving motor casing, the driving motor body is located in the driving motor casing, the driving motor casing adopts as above arbitrary one a driving motor water-cooling heat dissipation casing.

Compared with the prior art, the utility model provides a pair of driving motor water-cooling casing, through set up the rib that is used for cavity and a plurality of water conservancy diversion coolant liquid that the coolant liquid flows that is used for on casing body, form a plurality of stairstepping water channels grooves that supply the coolant liquid to flow between the rib, the coolant liquid flows from the water inlet entering stairstepping water channels inslot in cavity and discharges from the delivery port, the heat of taking away driving motor gives driving motor heat dissipation and cools down, the coolant liquid is at the reciprocal circulation flow in water channels groove, the stairstepping sets up the coolant liquid that makes the water channels inslot and all has certain velocity of flow, thereby reduce the production of vortex, reduce coolant liquid flow resistance, the heat radiating area has still been increased simultaneously, driving motor radiating efficiency has been improved effectively.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic diagram of axial temperature of a stator core in the prior art

Fig. 2 is an exploded view of the water-cooled heat dissipation housing of the driving motor according to the present invention;

fig. 3 is a side view of the middle housing provided by the present invention;

fig. 4 is a schematic view of the circumference of the middle casing according to the present invention.

Reference numerals:

10 casing body 11 middle shell 111 middle shell outer wall

112 front end cover 13 and rear end cover of middle shell inner wall 12

20 hollow cavity 30 rib 31 reversing rib

32 first direction-changing ribs 33 and second direction-changing ribs 34

40 water inlet 41 water outlet

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 2 to 4, the water-cooled heat dissipation casing of the driving motor provided by the present invention includes a casing body 10, wherein the casing body 10 is provided with a hollow cavity 20 for flowing of the cooling liquid and a plurality of ribs 30 for guiding the cooling liquid, and a plurality of stepped water channels for flowing of the cooling liquid are formed between the ribs 30; the machine shell body 10 is provided with a water inlet 40 for the entering of cooling liquid and a water outlet 41 for the discharging of the cooling liquid, and the water inlet 40 is communicated with the water outlet 41 through a water channel.

In specific implementation, as shown in fig. 2 to 4, the water-cooling heat dissipation casing of the driving motor includes a casing body 10, the casing body 10 includes a middle casing 11, a front end cover 12 and a rear end cover 13, the middle casing 11 is integrally formed by stretching, the middle casing 11 includes a middle casing outer wall 111 and a middle casing inner wall 112, and a hollow cavity 20 is formed between the middle casing outer wall 111 and the middle casing inner wall 112 in a hollow manner; the hollow cavity 20 is internally provided with a plurality of ribs 30 for guiding cooling liquid, a plurality of stepped water channel grooves for flowing the cooling liquid are formed between the ribs 30, and the stepped arrangement ensures that the cooling liquid in the water channel grooves has certain flow velocity, thereby reducing the generation of vortex, reducing the flow resistance of the cooling liquid, simultaneously increasing the heat dissipation area and effectively improving the heat dissipation efficiency of the driving motor.

The machine shell body 10 is also provided with a water inlet 40 for the entering of cooling liquid and a water outlet 41 for the discharging of the cooling liquid, specifically, the water inlet 40 and the water outlet 41 are arranged on the middle shell body 11, the water inlet 40 and the water outlet 41 are arranged on the outer wall 111 of the middle shell body, and the water inlet 40 and the water outlet 41 are communicated through a water channel; the cooling liquid enters the hollow cavity 20 from the water inlet 40, flows in the hollow cavity and is discharged from the water outlet 41, and the heat of the driving motor is taken away to dissipate heat and reduce the temperature of the driving motor.

As shown in fig. 2, the front end cover 12 and the rear end cover 13 are both connected with the middle housing 11 in a sealing manner, the front end cover 12 and the rear end cover 13 are fixed on the middle housing 11 through bolts, sealing members are annularly arranged on two side surfaces of the middle housing 11, the front end cover 12 and the rear end cover 13 are sealed with the middle housing 11 through the sealing members, the front end cover 12 and the rear end cover 13 block the continuous flow of the cooling liquid so as to change the direction of the cooling liquid by 180 degrees, and the cooling liquid flows back and forth in the hollow cavity 20; preferably, the sealing member can be a sealant in this embodiment, and the use of the sealant can reduce the use of the middle casing sealing groove and the sealing ring, thereby improving the sealing effect while reducing the process complexity and the manufacturing cost.

Fig. 4 is a schematic diagram of the circumference expansion of the middle shell, as shown in fig. 3 and fig. 4, the rib 30 is disposed inside the hollow cavity 20, the rib 30 includes a reversing rib 31 and a flow guiding rib 34, one end of the reversing rib 31 is connected to one side of the middle shell 11, the other end of the reversing rib 31 is not connected to the side of the middle shell 11, specifically, the reversing rib 31 includes a first reversing rib 32 and a second reversing rib 33;

specifically, one end of the first reversing rib 32 is connected to the top edge of the middle housing 11, and the other end of the first reversing rib 32 is suspended in the hollow cavity 20 and is not connected to the bottom edge of the middle housing 11; one end of the second reversing rib 33 is connected with the bottom edge of the middle shell 11, and the other end of the second reversing rib 33 is suspended in the hollow cavity 20 and is not connected with the top edge of the middle shell 11; the first and second direction-changing

ribs

32 and 33 match the cross-sectional area of the water channel at the turning with the cross-sectional area of the water channel in the axial direction, thereby effectively reducing the flow resistance of the cooling liquid.

As shown in fig. 4, the flow guiding ribs 34 are disposed between the first and second

direction changing ribs

32 and 33, the flow guiding ribs 34 are disposed in the center of the middle housing 11, and preferably, the lengths of the first direction changing ribs 32, the flow guiding ribs 34 and the second direction changing ribs 33 are the same; first switching-over rib 32, water conservancy diversion rib 34 and second switching-over rib 33 are the stairstepping setting in proper order, and the coolant liquid is shunted to two parallel water channel grooves by water conservancy diversion rib 34 after the turning phase change that blocks of front end housing 12 or rear end housing 13, makes the coolant liquid in the water channel groove all have certain velocity of flow to reduce the production of vortex, reduce coolant liquid flow resistance, still increased heat radiating area simultaneously, improved driving motor radiating efficiency effectively.

The utility model also provides a driving motor, including driving motor body and driving motor casing, in the driving motor casing was located to the driving motor body, the driving motor casing adopted as above arbitrary a driving motor water-cooling heat dissipation casing.

The utility model provides a driving motor water-cooling heat dissipation casing, when actually dispelling the heat to driving motor, the coolant liquid flows in cavity 20 from water inlet 40, water conservancy diversion rib 34 is located between first switching-over rib 32 and the second switching-over rib 33, the coolant liquid flows and is shunted to two parallel water channel grooves by water conservancy diversion rib 34, first switching-over rib 32 and second switching-over rib 33 make the sectional area of water channel at the turn department and the sectional area of water channel in the axial phase-match, reduced coolant liquid flow resistance; the front end cover 12 or the rear end cover 13 blocks the flow of the cooling liquid and makes the cooling liquid change the direction by 180 degrees, then the cooling liquid flows in a reciprocating and circulating manner in the water channel groove, and finally flows out from the water outlet 41 to take away the heat of the driving motor to dissipate the heat and reduce the temperature of the driving motor.

Although terms such as cabinet body, middle housing, front cover, rear cover, hollow cavity, ribs, reversing ribs, and flow guide ribs are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a driving motor water-cooling heat dissipation casing which characterized in that: the cooling machine shell comprises a machine shell body (10), wherein a hollow cavity (20) for flowing of cooling liquid and a plurality of ribs (30) for guiding the cooling liquid are arranged on the machine shell body (10), and a plurality of stepped water channel grooves for flowing of the cooling liquid are formed among the ribs (30);

the cooling machine shell comprises a machine shell body (10), wherein a water inlet (40) for cooling liquid to enter and a water outlet (41) for cooling liquid to discharge are formed in the machine shell body (10), and the water inlet (40) is communicated with the water outlet (41) through a water channel groove.

2. The water-cooling heat dissipation casing of the driving motor as recited in claim 1, wherein: casing body (10) include middle part casing (11), middle part casing (11) are including stretching integrated into one piece's middle part shells outer wall (111) and middle part shells inner wall (112), middle part shells outer wall (111) with cavity formation between middle part shells inner wall (112) cavity (20).

3. The water-cooling heat dissipation casing of the driving motor as recited in claim 2, wherein: a plurality of ribs (30) for guiding cooling liquid are arranged in the hollow cavity (20).

4. The water-cooling heat dissipation casing of the driving motor as recited in claim 3, wherein: the ribs (30) comprise reversing ribs (31), one ends of the reversing ribs (31) are connected with the side edge of the middle shell (11), and the other ends of the reversing ribs (31) are not connected with the side edge of the middle shell (11).

5. The water-cooling heat dissipation casing of the driving motor as recited in claim 4, wherein: the reversing ribs (31) comprise first reversing ribs (32) and second reversing ribs (33), the first reversing ribs (32) are connected with one side edge of the middle shell (11), and the second reversing ribs (33) are connected with the other side edge of the middle shell (11).

6. The water-cooling heat dissipation casing of the driving motor as recited in claim 5, wherein: ribs (31) still include water conservancy diversion rib (34), water conservancy diversion rib (34) are located first switching-over rib (32) with between second switching-over rib (33), the both ends of water conservancy diversion rib (34) all not with the side of middle part casing (11) is connected.

7. The water-cooling heat dissipation casing of the driving motor as recited in claim 6, wherein: the water conservancy diversion rib (34) are relative middle part casing (11) set up in the middle of, first switching-over rib (32) water conservancy diversion rib (34) with second switching-over rib (33) are the stairstepping setting in proper order.

8. The water-cooling heat dissipation casing of the driving motor as recited in claim 2, wherein: the machine shell body (10) further comprises a front end cover (12) and a rear end cover (13), wherein the front end cover (12) and the rear end cover (13) are used for blocking cooling liquid to enable the cooling liquid to flow in a reversing and reciprocating mode.

9. The water-cooling heat dissipation casing of the driving motor as recited in claim 8, wherein: and sealing elements are annularly arranged on two side surfaces of the middle shell (11), and the middle shell (11) is respectively sealed with the front end cover (12) and the rear end cover (13) through the sealing elements.

10. A driving motor is characterized by comprising a driving motor body and a driving motor shell, wherein the driving motor body is arranged in the driving motor shell, and the driving motor shell adopts the water-cooling heat dissipation shell of the driving motor as claimed in any one of claims 1 to 9.