CN117254629B

CN117254629B - Automobile motor shell

Info

Publication number: CN117254629B
Application number: CN202311514985.5A
Authority: CN
Inventors: 陈良进; 来彩云; 谢名扬; 牟雄
Original assignee: Guangdong Qixin Auto Parts Co ltd
Current assignee: Guangdong Qixin Auto Parts Co ltd
Priority date: 2023-11-15
Filing date: 2023-11-15
Publication date: 2024-02-06
Anticipated expiration: 2043-11-15
Also published as: CN117254629A

Abstract

The application relates to the field of motor shells, in particular to an automobile motor shell, which comprises a shell, wherein a cooling flow passage is formed in the inner wall of the shell, the cooling flow passage is annular and is arranged around a cavity in the shell, the profile of the axial section of the cooling flow passage is long-strip-shaped and extends along the axial direction of the shell, and at least two cooling ports for cooling liquid circulation are formed in the cooling flow passage; the cooling runner is close to the inner wall of the shell and fixedly connected with a plurality of guide fins, and at least part of the guide fins are used for guiding the cooling liquid in different directions according to the temperature of the cooling liquid. The utility model discloses can effectually optimize the homogeneity of cooling chamber when using.

Description

Automobile motor shell

Technical Field

The present application relates to the field of motor housings, and in particular to an automotive motor housing.

Background

As one of the currently mainstream power components, the motor is widely used in industry, and as the current control technology and battery technology develop, the motor is also widely used in the power system of the automobile as a power component.

However, the use environment different from the industrial motor is relatively stable in the actual use process, and the environment of the motor is influenced by the environment and time of the automobile in the use process of the motor. For example, in summer, the outdoor temperature is relatively high, and the temperature of the road surface can reach 60 ℃ or more once. In order to cool the electrode, the prior art not only adopts the radiating fins of the motor shell, but also is provided with a spiral channel inside the shell, and the radiating treatment is carried out through cooling liquid so as to be used for the radiating treatment of the motor shell.

The heat dissipation of the flow channel is very easy to cause uneven heat dissipation, for example, the temperature of the cooling liquid at the input end of the channel is relatively low, and the temperature of the cooling liquid at the output end of the channel is relatively high; and adjacent spacer sections of the flow channels because lateral heat transfer is required to transfer heat into the flow channels for absorption by the coolant. Therefore, the automobile motor is extremely easy to generate the condition of uneven heat dissipation in summer, and the regular internal structural defect of the shell of the automobile motor can be caused along with the reciprocating change of temperature in the long-term use process. Therefore, how to optimize the uniformity of heat dissipation of the motor housing of the automobile is a problem to be solved.

Disclosure of Invention

In order to optimize the uniformity of heat dissipation during use, the present application provides an automotive motor housing.

The application provides an automobile motor shell, adopts following technical scheme:

the utility model provides an automobile motor shell, includes the casing, the inside shaping of inner wall of casing has the cooling runner, the cooling runner is annular and encircles the inside cavity setting of casing, the profile of cooling runner axial section is rectangular shape and extends along the axial of casing and set up, just the cooling runner is equipped with two at least cooling mouths that are used for the coolant liquid circulation; the cooling runner is close to the inner wall of the shell and fixedly connected with a plurality of guide fins, and at least part of the guide fins are used for guiding the cooling liquid in different directions according to the temperature of the cooling liquid.

By adopting the technical scheme, during cooling, the cooling liquid enters the cooling flow channel through one of the cooling ports, and the cooling flow channel extends along the axial direction of the shell, so that the inner cavity inside the shell can be relatively comprehensively covered, and the uniformity during cooling is optimized; meanwhile, when the temperature of the cooling liquid changes and the temperature inside the shell changes, the guiding fins can guide the cooling liquid in different directions so as to realize the change of the regularity of the cooling liquid flow path in the cooling flow channel at different temperatures, thereby reducing dead angles generated by vortex flow and the like of fluid flow, causing the possibility of overhigh local temperature and further optimizing the cooling uniformity.

Optionally, the upstream surface of the guide fin is provided with a tip.

By adopting the technical scheme, the resistance of the flowing of the cooling liquid can be reduced.

Optionally, the guide fin includes fin main part and two grafting and slides and set up in the guide pin of fin main part back of the body surface of water one end, two the slip direction of guide pin is V-arrangement and the opening of V-arrangement is towards the flow direction of coolant liquid, guide pin is concave to be cambered surface form structure towards upstream surface of water one side outer wall, the inside of fin main part is provided with the control piece according to different temperature control guide pin roll-off or shrink, just the fin main part sets up in the inner wall of cooling runner.

Through adopting above-mentioned technical scheme, when the inside temperature change of casing and coolant liquid temperature change, the control can trend guide pin roll-off or shrink, and the guide pin is cambered surface form structure towards the outer wall of upstream face this moment, can realize the purpose with coolant liquid direction different directions and angle through the difference of stretching out the route to when realizing different temperatures, the difference of coolant liquid flow path in the cooling runner.

Optionally, a return spring is disposed in the fin body, and the return spring is connected to the guide pin and is used for driving the guide pin to keep a state of contracting in the fin body.

By adopting the technical scheme, the reset spring trend guide pin keeps a state of contracting in the fin main body and extends out through the control member trend guide pin through temperature change.

Optionally, the guide pin comprises a guide part and at least one guide rod fixedly connected to one side of the guide part facing the upstream surface, and the outer wall of the guide part facing the upstream surface is in a concave cambered surface structure; the guide rod is inserted and glidingly connected to the fin body, the reset spring is sleeved outside the guide rod, and two ends of the reset spring are fixedly connected to the fin body and the guide rod respectively.

Through adopting above-mentioned technical scheme, the guide rod slides the guide portion and connects in the fin main part to guide the coolant liquid through the cambered surface structure of the guide portion that stretches out, and in this process, make the guide rod shrink in the fin main part through reset spring.

Optionally, the fin main part has the control chamber towards the inside shaping of upstream face one end, the control piece sets up in the control chamber and can stretch out and draw back according to the temperature, just the expansion end fixed connection of control piece is in the guide pin.

Through adopting above-mentioned technical scheme, when coolant temperature changes and the inside temperature of casing change, can realize the control of stretching out of guide pin through the flexible realization of control to the control of coolant flow direction when realizing different temperatures.

Optionally, the control piece includes the control box that is adapted to the control chamber and fixes and communicates the flexible pipe in the control box inside, control box and flexible pipe inside are filled with the fluidic medium that contracts according to the temperature, just flexible pipe fixed connection is in the guide pin and is used for driving the guide pin to stretch out.

By adopting the technical scheme, when the temperature of the cooling liquid changes and the temperature inside the shell changes, for example, when the temperature rises, the fluid medium in the control box expands and tends to extend out of the telescopic tube, and the extending telescopic tube can drive the guide pin to extend out; simultaneously, because the temperature is different, the expansion volume of fluid medium is different for the guide pin stretches out the degree different, and because two guide pins are the contained angle setting, the resistance and the angle that lead pin stretches out the volume and produce are all different when making different temperatures, thereby realize the purpose that the coolant flow is to the different directions when different temperatures.

Optionally, the control piece comprises two control brackets made of memory metal, two ends of the control brackets are respectively connected with the inner wall of the control cavity and the guide pin, and the metamorphosis temperature of the control brackets is 30-50 ℃.

By adopting the technical scheme, the temperature change in the motor of the automobile generally does not exceed eighty degrees, and the metamorphosis temperature of the support is controlled to be 30-50 ℃, so that when the temperature change is large, the extension amount of the guide pin is relatively large, the dead angle in the cooling flow channel is effectively reduced when the temperature is relatively high, and heat is fully taken away when cooling liquid flows.

Optionally, the lateral wall of cooling runner is fixed connection in the apron of casing, the apron is tubulose and cover and locates the casing, the apron butt is cooperated in the fin main part.

By adopting the technical scheme, the guide fin forming and processing method can be relatively simple and convenient in forming and processing the guide fin.

Optionally, two cooling ports of the cooling flow channel are provided, and a reversing assembly is arranged outside the shell and used for controlling the cooling liquid to be input from one cooling port and output from the other cooling port; or the reversing component is used for controlling the cooling liquid to circulate in the cooling flow channel through the two cooling ports.

By adopting the technical scheme, under the condition of relatively low temperature or low temperature, the condition that the working temperature in the shell is too low due to the fact that heat is taken away can be avoided by self-circulation of the cooling liquid in the cooling flow channel; and when the temperature is relatively normal or higher, the external circulation is realized, and the heat is timely taken away.

In summary, the present application includes at least one of the following beneficial technical effects:

during cooling, cooling liquid enters the cooling flow channel through one of the cooling ports, and the cooling flow channel extends along the axial direction of the shell, so that the inner cavity inside the shell can be relatively comprehensively covered, and the uniformity during cooling is optimized; meanwhile, when the temperature of the cooling liquid changes and the temperature inside the shell changes, the guiding fins can guide the cooling liquid in different directions so as to realize the change of the regularity of the cooling liquid flow path in the cooling flow channel at different temperatures, thereby reducing dead angles generated by vortex flow and the like of fluid flow, causing the possibility of overhigh local temperature and further optimizing the cooling uniformity.

Drawings

Fig. 1 is a schematic cross-sectional structure of embodiment 1 of the present application.

Fig. 2 is an enlarged schematic view of the portion a in fig. 1.

Fig. 3 is a partial cross-sectional view in embodiment 1 of the present application.

Fig. 4 is a schematic structural view of the guide fin in embodiment 1 of the present application.

Fig. 5 is an exploded view of the guide fin in example 1 of the present application.

Fig. 6 is a schematic structural view of the guide pin in embodiment 1 of the present application.

Fig. 7 is a schematic cross-sectional view of the line B-B in fig. 4.

Fig. 8 is a schematic structural view of a guide fin in embodiment 2 of the present application.

Fig. 9 is an exploded view of the guide fin in example 2 of the present application.

Reference numerals illustrate: 1. a housing; 11. a cooling flow passage; 111. a cooling port; 12. a cover plate; 2. a guide fin; 21. a fin body; 211. a return spring; 212. a control chamber; 22. a guide pin; 220. a guide surface; 221. a guide part; 222. a guide rod; 23. a control member; 231. a control box; 232. a telescopic tube; 233. a control bracket; 3. a reversing assembly; 30. driving a pump; 31. a reversing pipeline; 311. an input port; 312. an output port; 313. a connection port; 32. a reversing shaft; 321. reversing ring grooves; 33. a reversing expansion piece; 34. and connecting pipelines.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-9.

The embodiment of the application discloses an automobile motor shell.

Example 1

Referring to fig. 1, an automotive motor housing includes a housing 1, guide fins 2, and a reversing assembly 3. The inside shaping of casing 1 inner wall has cooling runner 11, and cooling runner 11 is annular and encircles the inside cavity setting of casing 1, and cooling runner 11 is rectangular shape and profile along the profile of axial cross section and extends along casing 1 axial and set up to can be relatively abundant when making the coolant flow with the partial contact of casing 1 inner wall dispel the heat, optimize radiating degree of consistency.

Specifically, the side of the cooling flow channel 11 far away from the internal cavity in the shell 1 is provided with an opening and is covered with a cover plate 12, the cover plate 12 is of a tubular structure and is sleeved on the shell 1, and the cover plate 12 is covered with a sealing connection at the edge of the outer opening of the cooling flow channel 11, and the cooling flow channel is fixed or directly welded and fixed specifically through a bolt matched with a sealing ring, and the outer opening of the cooling flow channel 11 is blocked, so that the cooling flow channel 11 is formed, and the processing difficulty is reduced.

Meanwhile, the cooling flow passage 11 is provided with at least two cooling ports 111 for the input and output of cooling liquid. In the embodiment 1, two cooling ports 111 are provided, and both cooling ports 111 are located on the cover plate 12, and the reversing assembly 3 is fixedly connected to the outer side wall of the cover plate 12 through bolts, and is used for controlling the cooling liquid to be input from one cooling port 111 and output from the other cooling port 111; or the reversing assembly 3 is used to control the circulation of the cooling liquid in the cooling channel 11 through the two cooling ports 111.

Referring to fig. 1, 2 and 3, specifically, the reversing assembly 3 is provided with four ports for inputting or outputting the cooling liquid respectively, two ports of the reversing assembly 3 are respectively communicated with two cooling ports 111 in a one-to-one correspondence through connecting pipes 34, one of the remaining two ports is used for inputting the cooling liquid, the last port is used for discharging the cooling liquid, and one of the connecting pipes 34 is provided with a driving pump 30, so that when the two ports of the connecting pipe 34 are communicated with each other, the cooling liquid can be driven to circulate in the cooling flow channel 11 by the driving pump 30.

Referring to fig. 1 and 2, the reversing assembly 3 includes a reversing pipe 31, a reversing shaft 32, and a reversing telescopic 33, and the reversing pipe 31 is fixedly connected to the outer wall of the cover plate 12 by bolts. And the reversing pipeline 31 is provided with an input port 311, an output port 312 and two connection ports 313 corresponding to the four ports, and the input port 311 and the output port 312 are respectively used for introducing and discharging cooling liquid. The two connection ports 313 are respectively communicated with the two cooling ports 111 through different connection pipelines 34 in a one-to-one correspondence manner, and the two connection ports 313 are partially overlapped in the vertical direction.

The reversing shaft 32 is penetrated and adapted to the interior of the reversing pipeline 31, the reversing shaft 32 and the reversing pipeline 31 are arranged in a sealing way through sealing rings, and the sealing rings are arranged avoiding the input port 311, the output port 312 and the two connecting ports 313. Two reversing ring grooves 321 are formed in the outer wall of the reversing shaft 32, the distance between the two reversing ring grooves 321 is equal to the distance between the input port 311 and the output port 312 along the axial direction of the reversing pipeline 31, so that when the reversing shaft 32 slides axially, one reversing ring groove 321 can be communicated with the input port 311 and one connecting port 313, the other reversing ring groove 321 can be communicated with the output port 312 and the other connecting port 313, and therefore cooling liquid can be input into the cooling flow channel 11 from the input port and discharged from the output port 312.

Meanwhile, when the reversing shaft 32 slides, one reversing ring groove 321 can be arranged on the inner wall of the reversing pipeline 31 in a sealing mode, and the other reversing ring groove 321 can be communicated with the two connecting ports 313, so that cooling liquid can circulate in the cooling flow passage 11, and the cooling liquid can be used for circulation heat preservation when the temperature is low. The reversing telescopic device 33 is fixedly connected to the outer wall of the cover plate 12 through bolts, and the telescopic end of the reversing telescopic device 33 is fixedly connected to the end part of the reversing shaft 32 so as to drive the reversing shaft 32 to axially slide and realize the conversion of the flow direction of the cooling liquid; the reversing retractor 33 is a cylinder, an electric push cylinder or a hydraulic cylinder, preferably an electric push cylinder in embodiment 1.

Referring to fig. 1 and 4, the guide fins 2 are disposed in the cooling flow channel 11 and at least partially used for guiding the cooling liquid in different directions according to the temperature of the cooling liquid, so as to guide the cooling liquid in different directions at different temperatures, and change the regular flow path when the temperature changes, thereby reducing the situation that temperature partitions are generated on the cooling shell 1 due to solidification of the flow path, and achieving the purpose of optimizing the cooling uniformity.

Referring to fig. 4 and 5, specifically, the guide fins 2 are uniformly distributed on the inner wall of the cooling flow channel 11 facing the inner side, the guide fins 2 comprise a fin main body 21 and two guide pins 22 inserted and slidingly arranged at one end of the back surface of the fin main body 21, the fin main body 21 is fixedly connected to the inner wall of the cooling flow channel 11 facing the inner side, and the fin main body 21 is abutted to the cover plate 12 so as to support the cover plate 12, so that the possibility of deformation during use is reduced. Wherein, part of the fin main body 21 is fixedly connected with the cover plate 12 through bolts, the profile of the cross section of the fin main body 21 is in a water drop shape, and the cross sections of the fin main body 21 facing the upstream surface and the downstream surface are in tip-shaped structures so as to reduce the resistance when the cooling liquid flows.

Referring to fig. 5 and 6, the sliding direction of the two guide pins 22 is V-shaped, the V-shaped opening faces the flowing direction of the cooling liquid, the guide pins 22 are concave to be arc-shaped structures towards the outer wall of the upstream side, and are formed with guide surfaces 220, the inside of the fin main body 21 is provided with control members 23 for controlling the guide pins 22 to slide out or shrink according to different temperatures, so that contact surfaces with the cooling liquid with different angles and widths can be formed by matching with the extension and shrinkage of the guide pins 22, and the purpose of guiding the cooling liquid in different directions according to different temperatures is achieved.

The guide pin 22 includes a guide portion 221 and at least one guide rod 222 fixedly connected to a side of the guide portion 221 facing the upstream surface. The outer wall of the guide part 221 facing the upstream surface is of an inward concave cambered surface structure, one side of the guide part 221 facing the upstream surface is of a cambered surface structure, and when the guide part 221 is integrally spliced and matched with the fin main body 21, the contour of the cambered surface of the guide part 221 facing the upstream surface is matched with the contour of the outer wall of the fin main body 21 facing the upstream surface. The two guide rods 222 are provided, the guide rods 222 are inserted into and slidingly connected to the fin body 21, the guide rods 222 on the two guide parts 221 are distributed in a V shape and are not intersected, and the guide rods 222 on the two guide parts 221 are mutually close to each other when contracting towards one side of the upstream surface.

Referring to fig. 5 and 7, a return spring 211 is disposed in the fin body 21, the return spring 211 is sleeved on the guide rod 222, and both ends of the return spring 211 are fixedly connected to the fin body 21 and the guide rod 222, respectively, and are used for driving the guide rod 222 to retract toward the inside of the fin body 21.

Specifically, the fin body 21 is formed with a control cavity 212 facing the inside of a section of the upstream surface, and the cross-sectional profile of the control cavity 212 is adapted to the profile of the end of the fin body 21 facing the upstream surface, so that the coolant can be transferred into the control cavity 212 relatively quickly when the temperature of the coolant changes or the temperature inside the housing 1 changes.

Referring to fig. 5 and 7, the control member 23 includes a control box 231 adapted to the control chamber 212 and a bellows 232 fixed to and communicated with the inside of the control box 231, the control box 231 and the bellows 232 being provided in a sealed state, the inside of the control box 231 and the bellows 232 being filled with a fluid medium expanding according to temperature, such as nitrogen and helium; or alcohol, water, etc., and the telescopic tube 232 is fixedly connected to the guide rod 222 and is used for driving the guide rod 222 to extend when the temperature rises, and the cooling liquid can regularly flow according to different paths along with the reciprocation of the temperature. When the temperature is relatively high, the guide part 221 fully stretches out, so that the resistance to the cooling liquid is the largest, the cooling liquid can flow in the cooling flow channel 11 relatively fully, dead angles during the flow of the cooling liquid are reduced, and the cooling sufficiency and uniformity are optimized; while at relatively low temperatures the resistance to the flow of the cooling fluid is relatively small, which enables a fast circulation of the cooling fluid, maintaining a relatively low and suitable temperature.

Example 2

Referring to fig. 8 and 9, the difference from embodiment 1 is that the control member 23 includes two control brackets 233 made of memory metal, and both ends of the control brackets 233 are respectively connected to the inner wall of the control chamber 212 and the guide rod 222, and the modification temperature of the control brackets 233 is 30-50 c, for example, nickel-titanium alloy material.

So that the control bracket 233 can be extended or contracted by the temperature change when the temperature is changed and the control bracket 233 is in the metamorphosis temperature range, thereby realizing the control of the extension or contraction of the guide rod 222.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. An automobile motor housing, characterized in that: the cooling device comprises a shell (1), wherein a cooling flow channel (11) is formed in the inner wall of the shell (1), the cooling flow channel (11) is annular and is arranged around an inner cavity of the shell (1), the profile of the axial section of the cooling flow channel (11) is long-strip-shaped and extends along the axial direction of the shell (1), and the cooling flow channel (11) is provided with at least two cooling ports (111) for cooling liquid to circulate;

the cooling flow channel (11) is fixedly connected with a plurality of guide fins (2) close to the inner wall of the shell (1), and at least part of the guide fins (2) are used for guiding cooling liquid in different directions according to the temperature of the cooling liquid;

the guide fin (2) comprises a fin main body (21) and two guide pins (22) which are inserted and arranged at one end of the back surface of the fin main body (21) in a sliding mode, the two guide pins (22) are in V-shaped and V-shaped openings towards the flowing direction of cooling liquid, the guide pins (22) are concave towards the outer wall of one side of the upstream surface to form a cambered surface structure, control pieces (23) which are used for controlling the guide pins (22) to slide out or shrink according to different temperatures are arranged in the fin main body (21), and the fin main body (21) is arranged on the inner wall of the cooling flow channel (11).

2. An automotive motor housing as described in claim 1, wherein: the upstream surface of the guide fin (2) is arranged in a tip.

3. An automotive motor housing as described in claim 1, wherein: a return spring (211) is arranged in the fin main body (21), and the return spring (211) is connected with the guide pin (22) and is used for driving the guide pin (22) to keep a state of being contracted in the fin main body (21).

4. A motor housing for an automobile as claimed in claim 3, wherein: the guide pin (22) comprises a guide part (221) and at least one guide rod (222) fixedly connected to one side of the guide part (221) facing the upstream surface, and the outer wall of the guide part (221) facing the upstream surface is of a concave cambered surface structure; the guide rod (222) is inserted into and slidingly connected with the fin main body (21), the return spring (211) is sleeved on the guide rod (222), and two ends of the return spring (211) are fixedly connected with the fin main body (21) and the guide rod (222) respectively.

5. An automotive motor housing as described in claim 1, wherein: the fin body (21) is provided with a control cavity (212) towards the inside of one end of the water facing surface, the control piece (23) is arranged in the control cavity (212) and can stretch and retract according to temperature, and the stretching end of the control piece (23) is connected with the guide pin (22).

6. An automotive motor housing as described in claim 5, wherein: the control piece (23) comprises a control box (231) which is matched with the control cavity (212) and a telescopic pipe (232) which is fixed and communicated with the inside of the control box (231), the inside of the control box (231) and the inside of the telescopic pipe (232) are filled with fluid media which expand and contract according to temperature, and the telescopic pipe (232) is fixedly connected with the guide pin (22) and is used for driving the guide pin (22) to extend.

7. An automotive motor housing as described in claim 5, wherein: the control piece (23) comprises two control brackets (233) made of memory metal, two ends of the control brackets (233) are respectively connected with the inner wall of the control cavity (212) and the guide pin (22), and the metamorphosis temperature of the control brackets (233) is 30-50 ℃.

8. An automotive motor housing as described in claim 1, wherein: the outer side wall of the cooling flow channel (11) is a cover plate (12) fixedly connected to the shell (1), the cover plate (12) is tubular and sleeved on the shell (1), and the cover plate (12) is in butt fit with the fin main body (21).

9. An automotive motor housing as described in claim 1, wherein: two cooling ports (111) of the cooling flow channel (11) are arranged, a reversing assembly (3) is arranged outside the shell (1), and the reversing assembly (3) is used for controlling cooling liquid to be input from one cooling port (111) and output from the other cooling port (111); or the reversing assembly (3) is used for controlling the cooling liquid to circulate in the cooling flow channel (11) through the two cooling ports (111).