Radiator, motor controller and vehicle

Abstract

The utility model relates to a radiator, a motor controller and a vehicle, the radiator comprises a first plate body and a second plate body, the first plate body is provided with a heat dissipation groove, a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are both communicated with the heat dissipation groove; the second plate body is arranged on one side of the first plate body in the first direction, a plurality of fins are arranged on the side, back on to the first plate body, of the second plate body, the fins are arranged in the heat dissipation grooves, and the second plate body is connected with the first plate body in a sealed mode. Wherein the fins are arranged between the liquid inlet and the liquid outlet in the second direction, the fins extend in the second direction, the multiple fins are arranged in parallel and arranged at intervals in the third direction, and the first direction, the second direction and the third direction are orthogonal in pairs. According to the radiator, the fins are arranged, so that the heat exchange area of the radiator can be increased, and the radiating effect of the radiator can be improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of radiators, and in particular to a radiator, a motor controller and a vehicle. Background Art

[0002] The power module is the core heating element for the motor controller to realize its functions. Its main function is to convert the external input direct current into three-phase alternating current output. The conversion process is accompanied by energy consumption and a large amount of heat is generated. Therefore, a radiator is needed to achieve heat dissipation of the power module to prevent the chip temperature inside the power module from being too high and causing failure. In the related art, the power module usually adopts a liquid-cooled radiator for heat dissipation. In order to improve the heat dissipation effect of the liquid-cooled radiator, a plurality of fin columns are arranged between the water inlet and the water outlet of the liquid-cooled radiator, such as an elliptical column, a diamond column, a hexagonal column, etc. Due to the limitations of the forging process, the minimum distance between adjacent fin columns is large, resulting in poor heat dissipation effect of the radiator. Utility Model Content

[0003] The present disclosure aims to solve one of the technical problems in the related art at least to some extent.

[0004] To this end, the present disclosure proposes a heat sink to improve the heat dissipation effect of the heat sink.

[0005] The radiator disclosed in the present invention comprises a first plate body and a second plate body, the first plate body being provided with a heat dissipation groove, a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet being both connected to the heat dissipation groove; the second plate body being provided on one side of the first plate body in a first direction, a side of the second plate body facing away from the first plate body being provided with a plurality of fins, the fins being provided in the heat dissipation groove, and the second plate body being sealed and connected to the first plate body; wherein the fins are provided between the liquid inlet and the liquid outlet in the second direction, the fins extending along the second direction, the plurality of fins being provided in parallel and spaced apart along the third direction, and the first direction, the second direction and the third direction being orthogonal to each other.

[0006] Optionally, a distance between two adjacent fins in the third direction is 0.1 mm to 1.0 mm; and / or a thickness of the fin in the third direction is 0.1 mm to 1.0 mm.

[0007] Optionally, the projection of the fin in the first direction is in a straight line shape or a wave shape.

[0008] Optionally, the liquid inlet and the liquid outlet are both arranged on a side of the first plate body away from the second plate body.

[0009] Optionally, the heat dissipation groove has a first groove wall and a second groove wall arranged relatively to each other along the second direction, and the first groove wall, the second groove wall and the fin are spaced apart along the second direction; the liquid inlet is arranged close to the first groove wall, and at least a part of the liquid inlet is arranged between the fin and the first groove wall in the second direction, and / or the liquid outlet is arranged close to the second groove wall, and at least a part of the liquid outlet is arranged between the fin and the second groove wall in the second direction.

[0010] Optionally, the first groove wall includes a first section and a second section connected in sequence, the liquid inlet is arranged at the connection between the first section and the second section, the first section gradually tilts along the direction away from the second section toward the direction close to the second groove wall, and the second section gradually tilts along the direction away from the first section toward the direction close to the second groove wall; and / or, the second groove wall includes a third section and a fourth section connected in sequence, the liquid outlet is arranged at the connection between the third section and the fourth section, the third section gradually tilts along the direction away from the fourth section toward the direction close to the first groove wall, and the fourth section gradually tilts along the direction away from the third section toward the direction close to the first groove wall.

[0011] Optionally, the first plate body and the second plate body are connected by threaded fasteners, the first plate body has a first connecting hole for the threaded fastener to pass through, the second plate body has a second connecting hole for the threaded fastener to pass through, and the first connecting hole is arranged outside the heat dissipation groove; the groove wall of the heat dissipation groove includes a protrusion, and the protrusion is arranged to protrude toward the inside of the heat dissipation groove to avoid the first connecting hole.

[0012] Optionally, the protrusion is in an arc shape.

[0013] Optionally, at least one of the fins is an intermittent fin, which includes a first fin segment and a second fin segment, the first fin segment and the second fin segment are arranged at intervals along the second direction, and the protrusion is arranged between the first fin segment and the second fin segment in the second direction.

[0014] Optionally, the heat sink further includes a sealing ring, the first plate body is provided with an annular sealing groove, the sealing groove is arranged around the heat dissipation groove, the sealing ring is arranged in the sealing groove, and the sealing ring is clamped between the first plate body and the second plate body.

[0015] Optionally, the first plate body and the second plate body are connected by threaded fasteners, and a plurality of crimping bosses are provided on a side of the second plate body away from the first plate body.

[0016] Optionally, one of the first plate body and the second plate body is provided with a positioning column, and the other of the first plate body and the second plate body is provided with a positioning hole, and the positioning column is inserted into the positioning hole and is positioned and matched with the positioning hole.

[0017] Optionally, a surface of the second plate body away from the first plate body is a connecting surface, and the connecting surface is provided with a welding portion for welding with a heating element;

[0018] The connection surface is provided with an annular limiting boss, the limiting boss surrounds a solder groove, the welding part is arranged in the solder groove, and / or the welding part is provided with a connecting boss, and the connecting boss is used to contact the heating element.

[0019] The present disclosure also provides a motor controller.

[0020] The motor controller disclosed in the present invention includes a heat sink and a power module, wherein the heat sink is any one of the heat sinks described above; the power module is arranged on a side of the second plate body away from the first plate body, and the power module is connected to the second plate body.

[0021] The present disclosure also provides a vehicle.

[0022] The vehicle disclosed herein includes the motor controller described in any one of the above items.

[0023] The radiator disclosed in the present invention is provided with fins on the second plate body, the fins extend along the second direction, and a plurality of fins are provided in parallel and spaced apart along the third direction, so that a flow channel for the cooling medium to flow through is formed between adjacent fins. The fins are provided in the heat dissipation groove, so that the cooling medium in the heat dissipation groove can flow along the length direction of the flow channel. As shown in the figure, when the radiator is in use, the heating element is connected to the second plate body, and the heat generated by the heating element during operation is transferred to the second plate body; the cooling medium enters the heat dissipation groove from the liquid inlet, and then the cooling medium flows along the second direction, exchanging heat with the fins during the flow of the cooling medium; finally, the cooling medium flows out through the liquid outlet, thereby taking away the heat generated by the heating element, and realizing cooling and heat dissipation of the heating element. The radiator disclosed in the present invention can increase the heat exchange area of ​​the radiator by providing fins, thereby improving the heat dissipation effect of the radiator. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a side view of a heat sink according to an embodiment of the present disclosure.

[0025] Figure 2 yes Figure 1 AA view.

[0026] Figure 3 yes Figure 1 BB direction view.

[0027] Figure 4 yes Figure 1 A stereoscopic image of one viewing angle of the first plate.

[0028] Figure 5 yes Figure 1 A stereoscopic image of the first plate from another perspective.

[0029] Figure 6 yes Figure 1 A three-dimensional image of one viewing angle of the second plate.

[0030] Figure 7 yes Figure 1 A bottom view of the second plate.

[0031] Figure 8 yes Figure 7 A partial enlarged view of point C in the middle.

[0032] Fig. 9 yes Figure 1 A side view of the second plate.

[0033] Fig.10 yes Figure 1 A stereoscopic image of the second plate from another perspective.

[0034] Fig.11 yes Figure 1 A top view of the second plate.

[0035] Fig.12 It is an exploded diagram of a power module and a heat sink of a motor controller according to an embodiment of the present disclosure.

[0036] Fig.13 yes Fig.12 Schematic diagram of the assembly structure of the second plate and the power module.

[0037] Fig.14 yes Fig.12 Schematic diagram of the assembly structure of the second plate and the sealing ring.

[0038] Reference numerals:

[0039] 10. Radiator;

[0040] 1. first plate body; 11. heat dissipation groove; 111. first groove wall; 1111. first section; 1112. second section; 112. second groove wall; 1121. third section; 1122. fourth section; 113. raised portion; 114. third groove wall; 115. fourth groove wall; 12. liquid inlet; 13. liquid outlet; 14. first connecting hole; 15. sealing groove; 16. positioning column;

[0041] 2. second plate; 21. fin; 211. discontinuous fin; 2111. first fin segment; 2112. second fin segment; 212. continuous fin; 22. second connecting hole; 23. positioning hole; 24. crimping boss; 25. welding portion; 26. limiting boss; 27. connecting boss;

[0042] 3. Sealing ring;

[0043] 4. Threaded fasteners;

[0044] 20. Heating element. DETAILED DESCRIPTION

[0045] Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, but should not be understood as limiting the present disclosure.

[0046] like Figures 1 to 11 As shown, the heat sink 10 of the present disclosure includes a first plate body 1 and a second plate body 2. The first plate body 1 is provided with a heat dissipation groove 11, a liquid inlet 12 and a liquid outlet 13. The liquid inlet 12 and the liquid outlet 13 are both connected to the heat dissipation groove 11. The second plate body 2 is arranged on one side of the first plate body 1 in the first direction. The second plate body 2 is provided with a plurality of fins 21 on the side facing away from the first plate body 1. The fins 21 are arranged in the heat dissipation groove 11. The second plate body 2 is sealed and connected to the first plate body 1. The fins 21 are arranged between the liquid inlet 12 and the liquid outlet 13 in the second direction. The fins 21 extend along the second direction. The plurality of fins 21 are arranged in parallel and spaced apart along the third direction. The first direction, the second direction and the third direction are orthogonal to each other.

[0047] The heat sink 10 disclosed in the present invention is provided with fins 21 on the second plate 2, the fins 21 extend along the second direction, and the plurality of fins 21 are provided in parallel and arranged at intervals along the third direction, so that a flow channel for the cooling medium to flow through is formed between adjacent fins 21. By providing the fins 21 in the heat dissipation slot 11, the cooling medium in the heat dissipation slot 11 can flow along the length direction of the flow channel. Fig.12 As shown, when the radiator 10 is used, the heating element 20 is connected to the second plate body 2, and the heat generated by the heating element 20 when working is transferred to the second plate body 2; the cooling medium enters the heat dissipation groove 11 from the liquid inlet 12, and then the cooling medium flows along the second direction, and exchanges heat with the fins 21 during the flow of the cooling medium; finally, the cooling medium flows out through the liquid outlet 13, thereby taking away the heat generated by the heating element 20, and realizing cooling and heat dissipation of the heating element 20. The radiator 10 disclosed in the present invention can increase the heat exchange area of ​​the radiator 10 by providing the fins 21, thereby improving the heat dissipation effect of the radiator 10.

[0048] In some embodiments, Figure 2 , Figures 6 to 8 As shown in FIG. 1 , the projection of the fin 21 in the first direction is in the shape of a straight line. In other words, the fin 21 is in the shape of a flat plate.

[0049] By setting the fin 21 to have a straight line projection in the first direction, the flow resistance of the flow channel surrounded by the fin 21 is reduced, which helps to increase the flow speed of the cooling medium, so that the heat of the heating element 20 can be quickly taken away by the cooling medium, which helps to further improve the heat dissipation effect of the radiator 10.

[0050] In some other embodiments, the projection of the fin 21 in the first direction is wavy. In other words, the fin 21 is in a wavy plate shape.

[0051] By setting the projection of the fin 21 in the first direction to be wavy, the contact area between the fin 21 and the cooling medium is increased, thereby increasing the heat dissipation area of ​​the radiator 10 and further improving the heat dissipation effect of the radiator 10 .

[0052] Alternatively, if Figure 3 and Fig.12 As shown, the heat sink 10 further includes a sealing ring 3, which is clamped between the first plate body 1 and the second plate body 2. The first plate body 1 is provided with an annular sealing groove 15, which is arranged around the heat dissipation groove 11, and the sealing ring 3 is arranged in the sealing groove 15.

[0053] By providing the sealing ring 3 between the first plate body 1 and the second plate body 2, it is helpful to improve the sealing between the first plate body 1 and the second plate body 2, avoid the cooling medium from leaking from between the first plate body 1 and the second plate body 2, and help improve the reliability of the heat sink 10. In addition, by providing the sealing groove 15 and arranging the sealing ring 3 in the sealing groove 15, when assembling the heat sink 10, the sealing ring 3 can be placed in the sealing groove 15 first, and the groove wall of the sealing groove 15 can be used to limit the sealing ring 3, and then the sealing ring 3 can be clamped between the first plate body 1 and the second plate body 2 to prevent the sealing ring 3 from falling off, which is helpful to improve the assembly efficiency of the heat sink 10.

[0054] Optionally, the sealing ring 3 is a rubber ring.

[0055] In order to make the technical solution of the present disclosure easier to understand, the technical solution of the present disclosure is further described below by taking the first direction being consistent with the up-down direction, the second direction being consistent with the front-back direction, and the third direction being consistent with the left-right direction as an example.

[0056] For example, Figures 1 to 6 As shown, the first plate body 1 is disposed on the lower side of the second plate body 2, the notch of the heat dissipation slot 11 faces upward, and the fins 21 are disposed on the lower side of the second plate body 2. The fins 21 extend in the front-to-back direction, and a plurality of fins 21 are arranged at intervals in the left-to-right direction.

[0057] Optionally, the distance between two adjacent fins 21 in the third direction is 0.1 mm to 1.0 mm.

[0058] For example, Figure 8 As shown, the distance between two adjacent fins 21 in the left-right direction is D, and D is 0.1 mm to 1.0 mm.

[0059] By setting the spacing between two adjacent fins 21 in the third direction to 0.1 mm to 1.0 mm, the spacing between two adjacent fins 21 is made smaller, so that more fins 21 can be arranged when the size of the heat dissipation slot 11 is constant, which is beneficial to increase the contact area between the cooling medium and the radiator 10, and is beneficial to further improve the heat dissipation effect of the radiator 10.

[0060] Optionally, the thickness of the fin 21 in the third direction is 0.1 mm to 1.0 mm.

[0061] For example, Figure 8 As shown, the thickness of the fin 21 in the left-right direction is K, and K is 0.1 mm to 1.0 mm.

[0062] By setting the thickness of the fin 21 in the third direction to 0.1 mm to 1.0 mm, the thickness of a single fin 21 is made smaller, so that more fins 21 can be arranged when the size of the heat sink 11 is constant, which is beneficial to increase the contact area between the cooling medium and the radiator 10, and is beneficial to further improve the heat dissipation effect of the radiator 10.

[0063] Optionally, the second plate body 2 is made of metal materials such as copper and aluminum alloy.

[0064] It is understandable that metal materials generally have better thermal conductivity. By setting the material of the second plate body 2 to metal materials such as copper and aluminum alloy, the thermal conductivity of the second plate body 2 is improved, thereby further improving the heat dissipation effect of the radiator 10.

[0065] Of course, in other embodiments, the second plate body 2 may also be made of non-metallic materials such as plastic.

[0066] Optionally, the height of the fin 21 in the third direction is 1 mm to 10 mm.

[0067] For example, Fig. 9 As shown, the height of the fin 21 in the vertical direction is H, and H is 1 mm to 10 mm.

[0068] By setting the height of the fins 21 in the third direction to 1 mm to 10 mm, it is beneficial to increase the contact area between the cooling medium and the radiator 10 , which is beneficial to further improve the heat dissipation effect of the radiator 10 .

[0069] In some embodiments, Figure 3 As shown, the liquid inlet 12 and the liquid outlet 13 are both arranged on a side of the first plate body 1 away from the second plate body 2 .

[0070] For example, the liquid inlet 12 and the liquid outlet 13 are both disposed on the lower side of the first plate body 1 .

[0071] It can be understood that the first direction is the height direction of the radiator 10, and the size of the radiator 10 in the height direction is usually not limited. The length and width of the radiator 10 are limited by its installation space and can usually only be designed to be smaller. By arranging the liquid inlet 12 and the liquid outlet 13 on the side of the first plate body 1 away from the second plate body 2, the arrangement of the liquid inlet 12 and the liquid outlet 13 can be avoided, and the width and length of the radiator 10 can be additionally increased, which is conducive to reducing the occupied space of the radiator 10 and facilitating the arrangement and installation of the radiator 10.

[0072] Alternatively, if Figure 2 and Figure 5 As shown, the heat dissipation slot 11 has a first slot wall 111 and a second slot wall 112 arranged opposite to each other along the second direction, and the first slot wall 111 and the second slot wall 112 are spaced apart from the fins 21 along the second direction. The liquid inlet 12 is arranged close to the first slot wall 111, and at least a portion of the liquid inlet 12 is arranged between the fins 21 and the first slot wall 111 in the second direction.

[0073] For example, Figure 2 and Figure 5 As shown, the first groove wall 111 is arranged at the rear side of the second groove wall 112, and the liquid inlet 12 is arranged at the rear side of the liquid outlet 13. The first groove wall 111 is spaced apart from the rear end of the fin 21, so that an inlet channel is formed between the first groove wall 111 and the rear end of the fin 21. The liquid inlet 12 is arranged between the first groove wall 111 and the fin 21 in the front-to-back direction, that is, the liquid inlet 12 is arranged in the inlet channel.

[0074] like Figure 2 As shown, when the radiator 10 is working, the cooling medium enters the inlet channel from the liquid inlet 12, and then enters each heat dissipation channel through the inlet channel; then, the cooling medium flows along the length direction of the heat dissipation channel. The above design of the radiator 10 facilitates the communication between the liquid inlet 12 and each heat dissipation channel.

[0075] Optionally, the liquid outlet 13 is disposed close to the second slot wall 112 , and at least a portion of the liquid outlet 13 is disposed between the fin 21 and the second slot wall 112 in the second direction.

[0076] The second groove wall 112 is spaced apart from the front end of the fin 21, so that an outlet channel is formed between the second groove wall 112 and the rear end of the fin 21. The liquid outlet 13 is disposed between the second groove wall 112 and the fin 21 in the front-rear direction, that is, the liquid outlet 13 is disposed in the outlet channel.

[0077] like Figure 2 As shown, when the radiator 10 is working, the cooling medium in each heat dissipation channel enters the outlet channel and flows out through the liquid outlet 13 connected to the outlet channel. The above design of the radiator 10 facilitates the connection between the liquid outlet 13 and each heat dissipation channel.

[0078] Alternatively, if Figure 2 As shown, the first groove wall 111 includes a first section 1111 and a second section 1112 connected in sequence, and the liquid inlet 12 is arranged at the connection between the first section 1111 and the second section 1112. The first section 1111 gradually tilts toward the direction close to the second groove wall 112 along the direction away from the second section 1112, and the second section 1112 gradually tilts toward the direction close to the second groove wall 112 along the direction away from the first section 1111.

[0079] For example, Figure 2 As shown, the fin 21 is arranged at the front side of the first groove wall 111, the first section 1111 is arranged at the left side of the second section 1112, the first section 1111 gradually tilts forward from right to left, and the second section 1112 gradually tilts forward from left to right. Therefore, after the cooling medium entering from the liquid inlet 12 enters the inlet channel, a part of it directly enters the heat dissipation channel arranged corresponding to the liquid inlet 12; the other part flows to the left and right sides of the liquid inlet 12 respectively under the guidance of the first section 1111 and the second section 1112, and the angle between the flow direction of this part of the cooling medium and the length direction of the heat dissipation channel is greater than 90°, which is conducive to reducing the flow resistance of this part of the cooling medium.

[0080] This helps to increase the flow rate of the cooling medium so that the heat of the heating element 20 can be quickly taken away by the cooling medium, which helps to further improve the heat dissipation effect of the radiator 10 .

[0081] Optionally, the second groove wall 112 includes a third section 1121 and a fourth section 1122 connected in sequence, and the liquid outlet 13 is provided at the connection between the third section 1121 and the fourth section 1122. The third section 1121 gradually inclines from a direction away from the fourth section 1122 to a direction close to the second groove wall 112, and the fourth section 1122 gradually inclines from a direction away from the third section 1121 to a direction close to the second groove wall 112.

[0082] For example, Figure 2As shown, the fin 21 is arranged on the rear side of the second groove wall 112, the third section 1121 is arranged on the left side of the fourth section 1122, the third section 1121 gradually tilts backwards from right to left, and the fourth section 1122 gradually tilts backwards from left to right. Therefore, after entering the outlet channel from the heat dissipation channel, a part directly enters the liquid outlet 13; the other part flows to the liquid outlet 13 under the guidance of the third section 1121 and the fourth section 1122, and the angle between the flow direction of this part of the cooling medium and the length direction of the heat dissipation channel is greater than 90°, which is conducive to reducing the flow resistance of this part of the cooling medium.

[0083] This helps to increase the flow rate of the cooling medium so that the heat of the heating element 20 can be quickly taken away by the cooling medium, which helps to further improve the heat dissipation effect of the radiator 10 .

[0084] Alternatively, if Fig.12 As shown, the first plate body 1 and the second plate body 2 are connected by a threaded fastener 4. The first plate body 1 has a first connection hole 14 for the threaded fastener 4 to pass through, and the second plate body 2 has a second connection hole 22 for the threaded fastener 4 to pass through. Figure 5 As shown, the first connection hole 14 is arranged outside the heat dissipation slot 11. The slot wall of the heat dissipation slot 11 includes a protrusion 113, and the protrusion 113 is arranged to protrude toward the inside of the heat dissipation slot 11 to avoid the first connection hole 14. The threaded fastener 4 can be a screw, a bolt, etc.

[0085] For example, Figure 5 As shown, the heat dissipation slot 11 includes a third slot wall 114 and a fourth slot wall 115 which are arranged opposite to each other in the left-right direction, and the third slot wall 114 is arranged on the left side of the fourth slot wall 115. The left side of the third slot wall 114 and the right side of the fourth slot wall 115 are both provided with a first connection hole 14. The third slot wall 114 and the fourth slot wall 115 are both provided with a protrusion 113, the protrusion 113 arranged on the third slot wall 114 is protruded toward the fourth slot wall 115, and the protrusion 113 arranged on the fourth slot wall 115 is protruded toward the third slot wall 114. Among them, the protrusion 113 arranged on the third slot wall 114 is used to avoid the first connection hole 14 arranged on the left side of the third slot wall 114, and the protrusion 113 arranged on the fourth slot wall 115 is used to avoid the first connection hole 14 arranged on the right side of the fourth slot wall 115.

[0086] By providing a protrusion 113 on the groove wall of the heat dissipation groove 11 to avoid the first connecting hole 14, the layout of the heat dissipation groove 11 and the first connecting hole 14 is made more compact. Therefore, when the size of the first plate body 1 is constant, the size of the heat dissipation groove 11 can be increased, the heat dissipation area of ​​the radiator 10 can be increased, and the heat dissipation effect of the radiator 10 can be further improved.

[0087] Alternatively, if Figure 5As shown, the protrusion 113 is in an arc shape.

[0088] It is understandable that cooling medium also flows through the protrusion 113. By setting the protrusion 113 to be an arc shape, it is helpful to reduce the flow resistance at the protrusion 113, thereby helping to increase the flow speed of the cooling medium, so that the heat of the heating element 20 can be quickly taken away by the cooling medium, which is helpful to further improve the heat dissipation effect of the radiator 10.

[0089] Alternatively, if Figure 6 and Figure 7 As shown, at least one fin 21 is an intermittent fin 211. The intermittent fin 211 includes a first fin segment 2111 and a second fin segment 2112, which are arranged at intervals along the second direction, and the protrusion 113 is arranged between the first fin segment 2111 and the second fin segment 2112 in the second direction.

[0090] For example, Figure 7 As shown, the first wing section 2111 and the second wing section 2112 are arranged at intervals along the front-to-back direction, and the protrusion 113 is arranged between the first wing section 2111 and the second wing section 2112 in the front-to-back direction.

[0091] Therefore, the cooling medium in the heat dissipation slot 11 can contact the intermittent fins 211 before and after flowing through the protrusion 113 , which is beneficial to increase the heat dissipation area of ​​the radiator 10 and further improve the heat dissipation effect of the radiator 10 .

[0092] Alternatively, if Figure 6 As shown, a portion of the fins 21 are discontinuous fins 211, and another portion of the fins 21 are continuous fins 212. The continuous fins 212 are an integrated structure.

[0093] Alternatively, if Figure 10 to Figure 11 As shown, a plurality of crimping bosses 24 are provided on a side of the second plate body 2 away from the first plate body 1 .

[0094] Optionally, one of the first plate body 1 and the second plate body 2 is provided with a positioning column 16, and the other of the first plate body 1 and the second plate body 2 is provided with a positioning hole 23. The positioning column 16 is inserted into the positioning hole 23 and is positioned and matched with the positioning hole 23.

[0095] For example, the first plate body 1 is provided with a positioning column 16, and the second plate body 2 is provided with a positioning hole 23. When the first plate body 1 and the second plate body 2 are connected, the positioning column 16 is first inserted into the positioning hole 23 and positioned with the positioning hole 23 to achieve pre-positioning between the first plate body 1 and the second plate body 2, and then the first plate body 1 and the second plate body 2 are connected.

[0096] This helps to improve the assembly efficiency of the heat sink 10 .

[0097] For example, Figure 10 to Figure 11 As shown, four crimping bosses 24 are provided on the upper surface of the second plate body 2, and the four crimping bosses 24 are arranged at intervals along the front-to-back direction.

[0098] It can be understood that since the sealing ring 3 is clamped between the first plate body 1 and the second plate body 2, when the first plate body 1 and the second plate body 2 are connected by the threaded fastener 4, due to the elastic effect of the sealing ring 3, when the thread of the threaded fastener 4 is locked alone, the pre-tightening force of the threaded fastener 4 will be absorbed by the deformation of the sealing ring 3 during the compression process, resulting in a reduction in the pre-tightening force of the threaded fastener 4, which may cause the threaded fastener 4 to loosen during long-term operation and leak the cooling medium.

[0099] By providing a crimping boss 24 on the side of the second plate 2 away from the first plate 1, when the first plate 1 and the second plate 2 are connected by the threaded fastener 4, a crimping tool can be first used to press on the crimping boss 24 to compress the first plate 1 and the second plate 2; then, the first plate 1 and the second plate 2 are connected by the threaded fastener 4; after the threaded fastener 4 is connected, the crimping tool is removed. In this way, the pre-tightening force of the threaded fastener 4 can be prevented from being absorbed by the sealing ring 3, and the risk of the threaded fastener 4 being loosened is reduced, which is conducive to improving the reliability of the heat sink 10.

[0100] Alternatively, if Figures 10 to 13 As shown, the surface of the second plate body 2 away from the first plate body 1 is a connection surface, and the connection surface is provided with a welding portion 25 for welding with the heating element 20. The connection surface is provided with an annular limiting boss 26, and the limiting boss 26 surrounds a solder groove, and the welding portion 25 is arranged in the solder groove. The limiting boss 26 can be in the shape of a circular ring, an elliptical ring, a rectangular ring, etc.

[0101] For example, the upper surface of the second plate body 2 is a connecting surface, the welding portion 25 is disposed on the upper surface of the second plate body 2 , and the limiting boss 26 is disposed to protrude upward from the upper surface of the second plate body 2 .

[0102] When welding the heating element 20 and the second plate 2, the solder is first placed in the solder tank, and then the heating element 20 is placed on the solder, and then the heating element 20 and the second plate 2 are welded. During the welding process of the heating element 20 and the second plate 2, the solder will undergo a process of melting, flowing, filling, and solidification, and finally the heating element 20 and the heat sink 10 are connected. In this process, the limiting boss 26 can prevent the solder from overflowing, ensure that the solder is limited in the solder tank during the melting and flowing process, and improve the stability of the welding process.

[0103] Optionally, the connection surface is provided with a plurality of welding portions 25 , and each welding portion 25 is used for welding with a heating element 20 .

[0104] For example, Fig.10 and Fig.11 As shown, the connection surface is provided with three welding portions 25, such as Fig.12 and Fig.13 As shown, there are three heating elements 20, and the three heating elements 20 correspond to the three welding parts 25 one by one, and each heating element 20 is welded to the corresponding welding part 25. Among them, the three heating elements 20 can be three power modules, and the three power modules are respectively a U-phase power module, a V-phase power module and a W-phase power module.

[0105] Of course, in other embodiments, the heating element 20 and the heat sink 10 may also be connected by crimping, bonding, or the like.

[0106] Optionally, the welding portion 25 is provided with a connecting boss 27, and the connecting boss 27 is used to contact the heating element 20. The connecting boss 27 can be elliptical, rhombus, hexagonal, etc.

[0107] When welding the heating element 20 and the second board 2, the solder is first placed in the solder tank and located on the upper side of the connecting boss 27, and then the heating element 20 is placed on the solder to ensure that the connecting boss 27 and the heating element 20 are in contact with each other through the solder. Then, the welding operation between the heating element 20 and the second board 2 is performed.

[0108] Therefore, it can be ensured that the welding portion 25 and the heating element 20 can be in contact at least through the connecting boss 27 , so as to improve the heat transfer efficiency between the heating element 20 and the heat sink 10 and improve the cooling and heat dissipation effect of the heating element 20 .

[0109] Optionally, each welding portion 25 is provided with a plurality of connecting bosses 27 .

[0110] For example, Fig.10 and Fig.11 As shown, each welding portion 25 is provided with six connecting bosses 27 , and the six connecting bosses 27 are arranged in three rows and two columns.

[0111] By providing a plurality of connecting bosses 27 on each welding portion 25 , it is beneficial to further improve the heat transfer efficiency between the heating element 20 and the heat sink 10 , and improve the cooling and heat dissipation effect of the heating element 20 .

[0112] Compared with the existing liquid cooling radiator, the heat sink 10 disclosed in the present invention can reduce the temperature of the heating element 20 by more than 10°C, and can further improve the current output capacity of the power module, thereby improving the current output capacity of the motor controller equipped with the heat sink 10. By providing the crimping boss 24, when assembling the heat sink 10, the first plate body 1 can be pre-pressed against the second plate body 2 by a crimping tool, and then the screws can be tightened, which can effectively solve the problem of screw torque attenuation.

[0113] like Figure 12 to Figure 14 As shown, the motor controller of the present disclosure includes a heat sink 10 and a power module, the heat sink 10 is the heat sink 10 of any of the above embodiments, the power module is arranged on a side of the second plate body 2 away from the first plate body 1, and the power module is connected to the second plate body 2. The power module is equivalent to the heating element 20 in the above embodiments.

[0114] The motor controller disclosed in the present invention has the advantages of good heat dissipation effect and the like.

[0115] The vehicle of the present disclosure includes the motor controller of any one of the above embodiments.

[0116] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present disclosure. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present disclosure.

Claims

1. A radiator, characterized in that: include: A first plate body, wherein the first plate body is provided with a heat dissipation groove, a liquid inlet and a liquid outlet, wherein the liquid inlet and the liquid outlet are both connected to the heat dissipation groove; A second plate body, the second plate body is arranged on one side of the first plate body in the first direction, a side of the second plate body facing away from the first plate body is provided with a plurality of fins, the fins are arranged in the heat dissipation groove, and the second plate body is sealed and connected to the first plate body; Wherein, the fin is arranged between the liquid inlet and the liquid outlet in the second direction, the fin extends along the second direction, a plurality of the fins are arranged in parallel and spaced apart along the third direction, and the first direction, the second direction and the third direction are orthogonal to each other.

2. The heat sink according to claim 1, characterized in that: The distance between two adjacent fins in the third direction is 0.1 mm to 1.0 mm; and / or The thickness of the fin in the third direction is 0.1 mm to 1.0 mm.

3. The heat sink according to claim 1, characterized in that: The projection of the fin in the first direction is in a straight line shape or a wave shape.

4. The heat sink according to claim 1, characterized in that: The liquid inlet and the liquid outlet are both arranged on a side of the first plate body away from the second plate body.

5. The heat sink according to claim 4, characterized in that: The heat dissipation slot comprises a first slot wall and a second slot wall which are arranged opposite to each other along the second direction, and the first slot wall and the second slot wall are spaced apart from the fins along the second direction; The liquid inlet is arranged close to the first groove wall, and at least a part of the liquid inlet is arranged between the fin and the first groove wall in the second direction, and / or The liquid outlet is arranged close to the second groove wall, and at least a part of the liquid outlet is arranged between the fin and the second groove wall in the second direction.

6. The heat sink according to claim 5, characterized in that The first groove wall comprises a first section and a second section connected in sequence, the liquid inlet is arranged at the connection between the first section and the second section, the first section gradually inclines from a direction away from the second section to a direction close to the second groove wall, and the second section gradually inclines from a direction away from the first section to a direction close to the second groove wall; and / or The second groove wall includes a third section and a fourth section connected in sequence, the liquid outlet is arranged at the connection between the third section and the fourth section, the third section gradually inclines from a direction away from the fourth section to a direction close to the first groove wall, and the fourth section gradually inclines from a direction away from the third section to a direction close to the first groove wall.

7. The heat sink according to claim 1, characterized in that: The first plate body and the second plate body are connected by a threaded fastener, the first plate body has a first connection hole for the threaded fastener to pass through, the second plate body has a second connection hole for the threaded fastener to pass through, and the first connection hole is arranged outside the heat dissipation slot; The groove wall of the heat dissipation groove comprises a protrusion, and the protrusion is arranged to protrude toward the inside of the heat dissipation groove to avoid the first connection hole.

8. The heat sink according to claim 7, characterized in that: The protrusion is in an arc shape.

9. The heat sink according to claim 7, characterized in that: At least one of the fins is an intermittent fin, and the intermittent fin includes a first fin segment and a second fin segment, the first fin segment and the second fin segment are arranged at intervals along the second direction, and the protrusion is arranged between the first fin segment and the second fin segment in the second direction.

10. The radiator according to any one of claims 1 to 9, characterized in that: The radiator further comprises a sealing ring. The first plate body is provided with an annular sealing groove. The sealing groove is arranged around the heat dissipation groove. The sealing ring is arranged in the sealing groove. The sealing ring is clamped between the first plate body and the second plate body.

11. The radiator according to any one of claims 1 to 9, characterized in that: The first plate body and the second plate body are connected by threaded fasteners, and a plurality of crimping bosses are provided on a side of the second plate body away from the first plate body.

12. The radiator according to any one of claims 1 to 9, characterized in that: One of the first plate body and the second plate body is provided with a positioning column, and the other of the first plate body and the second plate body is provided with a positioning hole. The positioning column is inserted into the positioning hole and is positioned and matched with the positioning hole.

13. The radiator according to any one of claims 1 to 9, characterized in that: The surface of the second plate body away from the first plate body is a connecting surface, and the connecting surface is provided with a welding portion for welding with the heating element; The connection surface is provided with an annular limiting boss, the limiting boss surrounds a solder groove, the welding part is arranged in the solder groove, and / or The welding portion is provided with a connecting boss, and the connecting boss is used to contact the heating element.

14. A motor controller, characterized in that: include: A radiator, wherein the radiator is the radiator according to any one of claims 1 to 13; A power module is disposed on a side of the second plate body away from the first plate body, and the power module is connected to the second plate body.

15. A vehicle, characterized in that: Includes the motor controller as claimed in claim 14.

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