Heat dissipation piece and vehicle

Abstract

The utility model provides a heat dissipation piece and a vehicle. The heat dissipation piece comprises an annular shell. The shell is provided with an input port, an output port and a heat dissipation flow channel communicated with the input port and the output port. The heat dissipation flow channels comprise a pair of input flow channels and a pair of output flow channels. The pair of input flow channels extend towards the two sides from the input opening in the circumferential direction of the shell. The pair of output flow channels extends towards the two sides from the output port in the circumferential direction of the shell. And the input flow channel and the output flow channel which extend towards the same side of the shell are communicated. The cooling liquid only moves in the circumferential direction when flowing into the shell and flowing out of the shell, the axial flowing part is omitted, the water resistance of the heat dissipation flow channel is reduced, the flowing speed of the cooling liquid is increased, and the heat dissipation effect of the heat dissipation piece is enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a heat dissipation piece and a vehicle. BACKGROUND

[0002] With the gradual development of vehicle technology, new energy vehicles have gradually become popular. As a driving component of new energy vehicles, the motor gradually increases the requirements for its speed, efficiency and power density. The motor generates a large amount of heat when it is running, and the temperature is an important factor affecting the output performance of the motor. When the temperature rises, the output performance of the motor will decrease. Therefore, a corresponding heat dissipation flow channel is arranged in the motor for heat dissipation. At present, the path of the heat dissipation flow channel is relatively complex and has many bends, which results in large water resistance and reduces the heat dissipation efficiency of the heat dissipation piece. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a heat dissipation piece and a vehicle to solve the related technical problems.

[0004] The present application provides a heat dissipation piece, which comprises an annular shell; the shell is provided with an input port, an output port and a heat dissipation flow channel communicating the input port and the output port; the heat dissipation flow channel comprises a pair of input flow channels and a pair of output flow channels; the pair of input flow channels respectively extend to both sides along the circumference of the shell from the input port; the pair of output flow channels respectively extend to both sides along the circumference of the shell from the output port; the input flow channel and the output flow channel extending towards the same side of the shell are in communication.

[0005] Further, the input flow channel and / or the output flow channel is in the shape of a semicircular ring.

[0006] Further, the heat dissipation flow channel further comprises a return flow channel, the return flow channel communicates the input flow channel and the output flow channel; the return flow channel comprises a first section and a second section, the first section and the second section extend in opposite directions in the circumferential direction of the shell.

[0007] Further, the number of the return flow channels is set to at least two, and the two return flow channels respectively communicate the input flow channel and the output flow channel extending towards the same side of the shell.

[0008] Further, on one side of the circumference of the shell, the return flow channel comprises a return inlet communicating to the input flow channel and a return outlet communicating to the output flow channel.

[0009] The first section extends from the return inlet in a direction opposite to the input flow channel, and the second section extends from the end of the first section in a direction opposite to the first section to the return outlet.

[0010] Further, on one side of the shell in the circumferential direction, the number of the turn-back flow channels is multiple, and the multiple turn-back flow channels are distributed in communication along the axial direction of the shell.

[0011] Further, the input port and the output port are in the same direction.

[0012] Further, the cross section of the heat dissipation flow channel is rectangular.

[0013] Further, the input port and the output port are respectively arranged close to the two ends of the shell.

[0014] The application also provides a vehicle comprising an electric machine and the heat dissipation member described above, wherein the electric machine comprises a stator core, and the shell is abuttingly mounted with the stator core.

[0015] Since the pair of input flow channels extend to both sides in the circumferential direction from the input port, and the pair of output flow channels extend to both sides in the circumferential direction from the output port, the cooling liquid only moves in the circumferential direction when flowing into and out of the shell, and the axial flow part is omitted, the water resistance of the heat dissipation flow channel is reduced, the flow speed of the cooling liquid is improved, and the heat dissipation effect of the heat dissipation member is enhanced.

[0016] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present specification. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings incorporated into the specification and forming part of the specification, show embodiments consistent with the present specification, and together with the specification, serve to explain the principles of the present specification.

[0018] Figure 1 is a structural diagram of a shell in an exemplary embodiment of the present application;

[0019] Figure 2 is Figure 1 is a structural diagram of the shell in another angle in the present application;

[0020] Figure 3 is Figure 1 is a structural diagram of the shell in a top view.

[0021] BRIEF DESCRIPTION OF DRAWINGS: Shell-10; Abutting surface-100; Input port-11; Output port-12; Heat dissipation flow channel-13; Input flow channel-131; Output flow channel-132; Turn-back flow channel-133; First section-1331; Second section-1332; Turn-back inlet-1333; Turn-back outlet-1334; Communication port-1335; First joint-20; Second joint-30. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments (or modes of implementation) of the present application will be clearly and completely described with reference to the drawings. When the following description refers to the drawings, identical or similar elements in different drawings represent identical or similar elements or features unless otherwise specified.

[0023] If the application embodiments involve terms related to directionality or positional relationship (for example, up, down, left, right, front, back, in, out, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement, etc. between components in a certain specific posture (as shown in the drawings); if the specific posture changes, the directionality or positional relationship will also change accordingly. In addition, the terms "first", "second", etc. in the application embodiments are only used for convenience of description, and cannot be understood as indicating or implying relative importance.

[0024] With the continuous development of new energy vehicles, the performance requirements of electric machines are gradually increasing. Temperature is an important factor affecting the output performance of the electric machine. When the temperature rises, the output performance of the electric machine will decrease. In order to cool the electric machine, a flow channel is usually arranged in the electric machine. At present, the path of the heat dissipation flow channel is relatively complex, so that the cooling path of the refrigerant is relatively long, which causes the water resistance of the heat dissipation flow channel to be relatively large, thereby reducing the heat dissipation efficiency of the heat dissipation member. The present application provides a heat dissipation member and a vehicle to solve the related technical problems.

[0025] As shown in Figure 1 and Figure 2 The present application provides a heat dissipation member, which includes an annular housing 10. The inner side of the housing 10 is provided with an abutting surface 100 for abutting with the electric machine. The housing 10 is provided with an input port 11, an output port 12, and a heat dissipation flow channel 13 communicating the input port 11 and the output port 12. The heat dissipation flow channel 13 includes a pair of input flow channels 131 and a pair of output flow channels 132. The pair of input flow channels 131 respectively extend to both sides along the circumferential direction of the housing 10 from the input port 11. The pair of output flow channels 132 respectively extend to both sides along the circumferential direction of the housing 10 from the output port 12. The input flow channels 131 and the output flow channels 132 extending to the same side of the housing 10 are in communication.

[0026] Since the pair of input flow channels 131 extend to both sides along the circumferential direction from the input port 11, and the pair of output flow channels 132 extend to both sides along the circumferential direction from the output port 12, the cooling liquid only moves in the circumferential direction when flowing into and out of the housing 10, thereby saving the axial flow part, reducing the complexity of the heat dissipation flow channel 13, reducing the water resistance of the heat dissipation flow channel 13, improving the flow speed of the cooling liquid, and enhancing the heat dissipation effect of the heat dissipation member.

[0027] The structures of the pair of input channels 131 may be the same or different. Similarly, the structures of the pair of output channels 132 may be the same or different. In an embodiment in which the pair of input channels 131 have the same structure, the input channels 131 may be semicircular, with the input channels 131 on both sides each occupying half of the complete circumference, so that the input channels 131 are neither too long nor too short. Therefore, the problem of excessive water resistance caused by an excessively long input channel 131 and the problem of insufficient heat dissipation caused by an excessively short input channel 131 are avoided, thereby comprehensively enhancing the heat dissipation effect of the heat sink.

[0028] In an embodiment where the pair of output channels 132 have the same structure, the output channels 132 may also be semicircular. Similar to the embodiment where the input channels 131 are semicircular, since the output channels 132 are semicircular, each of the output channels 132 on either side occupies half of the entire circumference, the output channels 132 are neither too long nor too short. This avoids the problem of excessive water resistance caused by an overly long output channel 132, and also avoids the problem of insufficient heat dissipation caused by a too short output channel 132, thereby comprehensively enhancing the heat dissipation effect of the heat sink.

[0029] The input channel 131 and the output channel 132 may both be semicircular. Alternatively, only the input channel 131 or only the output channel 132 may be semicircular. In an embodiment where the input channels 131 have different structures, one of the input channels 131 may be an arc smaller than a semicircle, while the other may be an arc larger than a semicircle.

[0030] In an embodiment where the structures of the pair of output channels 132 are different, one of the output channels 132 may be an arc smaller than a semicircle, and the other of the output channels 132 may be an arc larger than a semicircle. In other embodiments, the specific structures of the input channel 131 and the output channel 132 are not limited.

[0031] In one embodiment, if Figure 2 and Figure 3 As shown, the heat dissipation channel 13 may further include a return channel 133. The return channel 133 connects the input channel 131 and the output channel 132. The return channel 133 includes a first section 1331 and a second section 1332. The first section 1331 and the second section 1332 extend in opposite directions in the circumferential direction of the housing 10.

[0032] Since the return channel 133 includes a first section 1331 and a second section 1332 extending in opposite directions, the coolant will experience a return during the flow process, which can remove more heat and improve the heat dissipation capacity of the heat sink. In other embodiments, the specific structure of the heat dissipation channel 13 is not limited.

[0033] like Figure 2As shown, on one side of the casing 10 in the circumferential direction, the turn-back flow channel 133 includes a turn-back inlet 1333, a turn-back outlet 1334 and a communication port 1335. The turn-back inlet 1333 is communicated to the input flow channel 131, and the turn-back outlet 1334 is communicated to the output flow channel 132. The first section 1331 and the second section 1332 are communicated through the communication port 1335. In an embodiment, the first section 1331 extends from the turn-back inlet 1333 in a direction opposite to the input flow channel 131, and the second section 1332 extends from the end of the first section 1331 in a direction opposite to the first section 1331 to the turn-back outlet 1334.

[0034] The first section 1331 and the second section 1332 are arranged adjacently, which improves the compactness of the turn-back flow channel 133, and the heat dissipation member can achieve efficient heat dissipation in a limited space. In other embodiments, other flow channels can be arranged between the first section 1331 and the second section 1332 according to requirements. The specific structural form of the turn-back flow channel 133 is not limited.

[0035] In an embodiment, the number of the turn-back flow channels 133 can be at least two. The two turn-back flow channels 133 are respectively communicated to the input flow channel 131 and the output flow channel 132 extending towards the same side of the casing 10. On both sides of the casing 10 in the circumferential direction, the cooling liquid will be turned back on the path from the input flow channel 131 to the output flow channel 132, which further improves the heat dissipation effect of the heat dissipation member.

[0036] In other embodiments, the specific number of the turn-back flow channels 133 is not limited. For example, the number of the turn-back flow channels 133 can be only one, which is only communicated to the input flow channel 131 and the output flow channel 132 on one side of the casing 10 in the circumferential direction, and the input flow channel 131 and the output flow channel 132 on the other side of the casing 10 in the circumferential direction can be communicated by flow channels of other structural forms.

[0037] In an embodiment, on one side of the casing 10 in the circumferential direction, the number of the turn-back flow channels 133 is multiple, and the multiple turn-back flow channels 133 are distributed and communicated along the axial direction of the casing 10. By arranging multiple turn-back flow channels 133 in the axial direction, the number of times of turning back of the cooling liquid can be increased, which further improves the heat dissipation capacity of the heat dissipation member. In other embodiments, on one side of the casing 10 in the circumferential direction, the number of the turn-back flow channels 133 is not limited, and the number of the turn-back flow channels 133 can be arranged according to the size of the stator core of the motor.

[0038] In the embodiment in which the input flow channel 131 and the output flow channel 132 are semicircular, the turn-back flow channel 133 can also be semicircular, so that the entire heat dissipation flow channel 13 is spiral-shaped. The spiral-shaped heat dissipation flow channel 13 has better water flow uniformity, which can further improve the heat dissipation capacity of the heat dissipation member.

[0039] In the embodiment in which the input flow channel 131 and the output flow channel 132 are semicircular, the turn-back flow channel 133 can also be semicircular, so that the entire heat dissipation flow channel 13 is spiral-shaped. The spiral-shaped heat dissipation flow channel 13 has better water flow uniformity, which can further improve the heat dissipation capacity of the heat dissipation member. Figure 2The cooling liquid enters the input port 11 and extends to both sides in the circumferential direction. The cooling liquid on one side reaches the output port 12 in the order of a, b, c, d, e, f in the direction indicated by the arrow. The cooling liquid on the other side reaches the output port 12 in the order of a', b', c', d', e', f' in the direction indicated by the arrow. The cooling liquid undergoes five turns during the travel, and the heat dissipation member can have a better heat dissipation effect.

[0040] In an embodiment, the input port 11 and the output port 12 can have the same orientation. The input port 11 and the output port 12 are located in the same direction in the circumferential direction of the housing 10, which is beneficial for the assembly of the motor. Specifically, as shown in the figure, the first connector 20 and the second connector 30 can be provided on the housing 10. The input port 11 is provided on the first connector 20. The output port 12 is provided on the second connector 30. Figure 2

[0041] In an embodiment, the input port 11 and the output port 12 are respectively arranged near the two ends of the housing 10. This arrangement reduces the required extension distance of the heat dissipation flow channel 13 in the axial direction of the housing 10, further reduces the water resistance of the heat dissipation flow channel 13, and improves the heat dissipation effect of the heat dissipation member.

[0042] If the input port 11 or the output port 12 is located in the middle of the housing 10, taking the case where the output port 12 is located in the middle as an example, in order to ensure the heat dissipation effect, the heat dissipation flow channel 13 needs to pass the output port 12 in the axial direction of the housing 10 and then return to the output port 12 in the axial direction, which increases the length of the heat dissipation flow channel 13, increases the water resistance of the heat dissipation flow channel 13, and reduces the heat dissipation efficiency of the heat dissipation member.

[0043] In an embodiment, the cross section of the heat dissipation flow channel 13 is rectangular, which can increase the heat dissipation area and further improve the heat dissipation effect of the heat dissipation member. Specifically, the size of the heat dissipation flow channel 13 can be 25mm x 4mm, that is, the length of the cross section of the heat dissipation flow channel 13 in the axial direction of the housing 10 is 25mm, and the length of the cross section of the heat dissipation flow channel 13 in the radial direction of the housing 10 is 4mm. In other embodiments, the shape and size of the cross section of the heat dissipation flow channel 13 are not limited, and the size of the heat dissipation flow channel 13 can be set according to the length of the stator core in the motor.

[0044] The application also provides a vehicle comprising a motor and the heat dissipation member described above. The motor comprises a stator core. The housing is installed in abutment with the stator core. Since the heat dissipation member has a good heat dissipation efficiency, the motor of the application has good performance, so that the vehicle of the application has good power performance. The vehicle of the application can be an electric vehicle, a hybrid vehicle, etc., and the specific type is not limited.

[0045] ​It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of the present application is not limited to the precise structure described in the above embodiments and shown in the accompanying drawings; any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the present application.

Claims

1. A heat sink, characterized in that: The application relates to a heat dissipation device for an electric machine. The heat dissipation device comprises a ring-shaped housing, an input port, an output port and a heat dissipation flow channel connecting the input port and the output port. The heat dissipation flow channel comprises a pair of input flow channels and a pair of output flow channels. The pair of input flow channels respectively extend to two sides along the circumference of the housing from the input port. The pair of output flow channels respectively extend to two sides along the circumference of the housing from the output port.

2. The heat dissipating member according to claim 1, wherein The input flow channel and the output flow channel extending to the same side of the housing are connected.

3. The heat dissipating member according to claim 1, wherein The input flow channel and / or the output flow channel is in a semi-circular ring shape.

4. The heat dissipating member according to claim 3, wherein The heat dissipation flow channel further comprises a turn-back flow channel connecting the input flow channel and the output flow channel.

5. The heat dissipating member according to claim 4, wherein The turn-back flow channel comprises a first section and a second section, and the first section and the second section extend in opposite directions along the circumference of the housing. The number of the turn-back flow channels is at least two, and the two turn-back flow channels respectively connect the input flow channel and the output flow channel extending to the same side of the housing.

6. The heat dissipating member according to claim 3, wherein On one side of the circumference of the housing, the turn-back flow channel comprises a turn-back inlet connected to the input flow channel and a turn-back outlet connected to the output flow channel.

7. The heat dissipating member according to claim 1, wherein The first section extends from the turn-back inlet in a direction opposite to the input flow channel, and the second section extends from the end of the first section in a direction opposite to the first section to the turn-back outlet.

8. The heat dissipating member according to claim 1, wherein On one side of the circumference of the housing, the number of the turn-back flow channels is multiple, and the multiple turn-back flow channels are connected and distributed along the axial direction of the housing.

9. The heat dissipating member according to claim 1, wherein The input port and the output port are in the same direction.

10. A vehicle characterized by comprising: The cross section of the heat dissipation flow channel is in a rectangular shape. The input port and the output port are respectively arranged close to two ends of the housing. The application further relates to an electric machine comprising the heat dissipation device and a stator core. The housing is abutted and mounted with the stator core.

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