Motor controller and vehicle

Abstract

The utility model provides a motor controller and a vehicle. The motor controller comprises a shell, a partition plate, a water inlet nozzle, a water outlet nozzle and a power module. A water channel is arranged between the shell and the power module, the partition plate is arranged in the water channel, and an upper-layer cavity and a lower-layer cavity are formed in the water channel. And the water inlet nozzle and the water outlet nozzle are arranged on the shell and are respectively communicated with the upper-layer cavity and the lower-layer cavity. The water inlet nozzle and the water outlet nozzle are located on the same side of the water channel in the length direction of the water channel. According to the controller assembly, the water inlet nozzle and the water outlet nozzle are arranged on the same side of the water channel, additional fixing buckles for communicating the water pipe and the water pipe are reduced, the number of parts is reduced, and then the cost and the weight of the controller assembly are reduced. And meanwhile, the motor controller is more convenient to arrange and compact in structure.

Description

Technical Field

[0001] This application relates to the field of motor controllers, and more particularly to motor controllers and vehicles. Background Technology

[0002] With the expanding automotive market, motor technology is also rapidly developing. The cooling system of the motor controller is a crucial component of a vehicle, with water cooling being the mainstream solution. The design of the motor controller significantly impacts its reliability. A proper cooling system ensures the motor controller operates normally and reliably at its optimal temperature under various working conditions. However, existing motor controllers typically employ a single-layer water channel or a simple straight-through cooling structure, with the inlet and outlet nozzles mostly located on opposite sides of the water channel. This separation necessitates additional connecting pipes, housing mounting points, and pipe clamps, increasing the number of parts and the weight of the motor controller. Furthermore, the location of the inlet and outlet nozzles on opposite sides of the housing makes it difficult to achieve a compact structure, resulting in a larger space requirement for the motor controller.

[0003] Therefore, it is necessary to provide an improved motor controller and vehicle to solve the above problems. Utility Model Content

[0004] This application provides a motor controller and vehicle that are easier to arrange and have a more compact structure.

[0005] This application provides a motor controller, including a housing, a partition, a water inlet, a water outlet, and a power module. A water channel is provided between the housing and the power module. The partition is disposed in the water channel and forms an upper chamber and a lower chamber within the water channel. The water inlet and the water outlet are disposed on the housing and are respectively connected to the upper chamber and the lower chamber. In the length direction of the water channel, the water inlet and the water outlet are located on the same side of the water channel.

[0006] Furthermore, the waterway also includes a connecting portion, which is disposed within the housing and connects the upper chamber and the lower chamber; the connecting portion and the water outlet are respectively located on both sides of the waterway.

[0007] Furthermore, the water inlet is connected to the lower chamber, and the water outlet is connected to the upper chamber; the water inlet, the lower chamber, the connecting part, the upper chamber, and the water outlet are sequentially connected.

[0008] Furthermore, the partition includes a partition body and a sealing portion disposed on the partition body, the sealing portion abutting against the inner wall of the housing to seal the upper chamber and the lower chamber.

[0009] Further, the sealing part comprises an outer sealing part arranged at the edge of the partition body, the outer sealing part is arranged below the partition body, the inner wall comprises an annular outer step part protruding upward from the bottom of the shell, the annular outer step part is arranged below the outer sealing part and abuts against the outer sealing part; the outer sealing part is cured sealant.

[0010] Further, the partition body is provided with a through hole, the shell further comprises a protruding part extending upward from the bottom of the shell, the protruding part is arranged in the through hole; the sealing part comprises an inner sealing part arranged at the edge of the through hole, the inner sealing part is arranged below the partition body, the inner wall comprises an annular inner step part protruding upward from the bottom of the shell, the annular inner step part is arranged below the inner sealing part and abuts against the inner sealing part; the inner sealing part is cured sealant.

[0011] Further, the power module comprises a first power module and a second power module arranged above the upper chamber, and a heat dissipation plate, the first power module and the second power module are arranged on the heat dissipation plate, in the length direction of the water channel, the first power module is away from the water outlet nozzle, and the second power module is close to the water outlet nozzle; the lower chamber is provided with a capacitor module below.

[0012] Further, the power module further comprises a heat conduction column arranged below the heat dissipation plate, the heat conduction column abuts against the upper surface of the partition.

[0013] Further, the lower chamber is provided with a capacitor module below.

[0014] Further, the shell is integrally formed by casting; and the partition is assembled in the shell.

[0015] The application further provides a vehicle comprising the motor controller.

[0016] The partition of the application separates the water channel into an upper chamber and a lower chamber, and the water inlet nozzle and the water outlet nozzle are arranged on the same side of the water channel, so that the number of parts is reduced, the cost and the weight of the controller assembly are reduced, the motor controller is arranged more conveniently, and the structure is compact. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a structural schematic diagram of a motor controller according to an example embodiment of the application.

[0018] Figure 2 FIG. 2 is another view of the motor controller shown in FIG. 1. Figure 1

[0019] Figure 3 ​is a top view of a motor controller of the present application without a partition and a power module, wherein only part of the motor controller is shown.

[0020] Figure 4 is a top view of a motor controller of the present application without a power module, wherein only part of the motor controller is shown.

[0021] Figure 5 is Figure 1 is a structural schematic diagram of a partition of the motor controller.

[0022] BRIEF DESCRIPTION OF DRAWINGS

[0023] 10, housing; 11, water channel; 12, upper chamber; 13, lower chamber; 14, communication part; 15, inner wall; 151, annular outer step part; 152, annular inner step part; 16, protrusion part; 20, partition; 21, partition body; 211, through hole; 212, long side; 213, short side; 214, long side; 215, short side; 22, sealing part; 221, outer sealing part; 222, inner sealing part; 23, notch; 30, water inlet nozzle; 40, water outlet nozzle; 50, power module; 51, first power module; 511, first power module unit; 52, second power module; 521, second power module unit; 53, heat dissipation plate; 54, heat conduction column; 60, capacitor module. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments (or, modes of implementation) of the present application will be described clearly and completely in conjunction with the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated.

[0025] If the embodiments of the present application involve directional indications or positional relationships (such as up, down, left, right, front, back, inner, outer, 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 relationships, movement conditions, etc. between components in a certain specific posture (as shown in the drawings); if the specific posture changes, the directional indications or positional relationships also change accordingly. In addition, the terms “first”, “second”, etc. in the embodiments of the present application are only used for convenience of description, and cannot be understood as indicating or implying relative importance.

[0026] Referring to Figures 1 to 4As shown, the motor controller provided by the present application comprises a housing 10, a partition 20, a water inlet nozzle 30, a water outlet nozzle 40, a power module 50 and a capacitor module 60. The partition 20 is arranged in the housing 10, and the water inlet nozzle 30 and the water outlet nozzle 40 are arranged at the same end of the housing 10. The power module 50 is arranged above the partition 20, and the capacitor module 60 is arranged below the partition 20.

[0027] The housing 10 is integrally formed by casting. A water channel 11 is formed between the housing 10 and the power module 50. The partition 20 is arranged in the water channel 11 and separates the water channel 11 into an upper chamber 12 and a lower chamber 13. A communication part 14 is arranged in the housing 10 and communicates the upper chamber 12 and the lower chamber 13. The communication part 14 and the water outlet nozzle 40 are respectively located at two sides of the water channel 11. The coolant sequentially cools the lower chamber 13 and the upper chamber 12.

[0028] A main part of the water channel 11 is formed by an inner wall 15 of the housing 10. The power module 50 covers the upper part of the housing 10 to form a sealed water channel 11. The inner wall 15 further comprises an annular outer stepped part 151 and an annular inner stepped part 152. The annular outer stepped part 151 and the annular inner stepped part 152 are both located below the partition 20. The annular outer stepped part 151 and the annular inner stepped part 152 are upwardly protruded from the bottom of the housing 10, and the annular outer stepped part 151 is located at the periphery of the annular inner stepped part 152. The housing 10 further comprises a protrusion 16 extending upwardly from the bottom of the housing 10. The protrusion 16 is arranged at the middle position of the bottom of the housing 10.

[0029] Please also refer to Figure 5 As shown, the partition 20 comprises a partition body 21 and a sealing part 22. The sealing part 22 abuts against the inner wall 15 of the housing 10 to seal the upper chamber 12 and the lower chamber 13. According to the embodiment of the present application, the sealing part 22 can be arranged at the edge of the partition body 21.

[0030] A through hole 211 is formed in the partition body 21. The protrusion 16 of the housing 10 is arranged in the through hole 211. The sealing part 22 comprises an outer sealing part 221 and an inner sealing part 222. The outer sealing part 221 is arranged at the edge of the partition body 21. The inner sealing part 222 is arranged at the edge of the through hole 211. The outer sealing part 221 and the inner sealing part 222 are both arranged below the partition body 21. The outer sealing part 221 is arranged above the annular outer stepped part 151 and abuts against the annular outer stepped part 151. The inner sealing part 222 is arranged above the annular inner stepped part 152 and abuts against the inner sealing part 222 to seal the upper chamber 12 and the lower chamber 13.

[0031] The partition body 21 comprises two long sides 212 and two short sides 213. The two long sides 212 of the partition body 21 are provided with notches 23 to avoid the protruding part of the shell 10. The outer sealing part 221 is arranged in the shape of the notches 23. The two long sides 212 and the outer sealing part 221 provided on the outer edge of the short side 213 close to the water outlet nozzle 40. The short side 213 close to the communication part 14 is not provided with the outer sealing part 221 to allow the cooling liquid to flow through.

[0032] According to the embodiments of the present application, the through hole 211 is a rectangular hole, the length of the long side 214 of the through hole 211 is close to the length of the long side 212, and the two short sides 215 of the through hole 211 are close to the two short sides 213, respectively.

[0033] In some embodiments, the partition body 21 is made of metal materials such as aluminum, steel, copper or aluminum alloy.

[0034] According to the embodiments of the present application, the outer sealing part 221 and the inner sealing part 222 are cured sealant. When the partition 20 is assembled in the water channel 11, the cured sealant is tightly sealed with the annular outer step part 151 and the annular inner step part 152 of the water channel 11. The cured sealant completely separates the upper chamber 12 from the lower chamber 13, improving the cooling effect.

[0035] The partition 20 of the present application is assembled in the shell 10 by cured sealant, which can reduce the welding process, reduce the production cost, and reduce the risk of welding leakage compared with the partition welded on the shell by friction stir welding.

[0036] According to the embodiments of the present application, the cured sealant can be silicone, epoxy sealant, polyurethane sealant or polysulfide sealant.

[0037] The water inlet nozzle 30 and the water outlet nozzle 40 are arranged on the shell 10 and located on the same side of the water channel 11. The water inlet nozzle 30 communicates with the lower chamber 13, and the water outlet nozzle 40 communicates with the upper chamber 12. The water inlet nozzle 30, the lower chamber 13, the communication part 14, the upper chamber 12 and the water outlet nozzle 40 are sequentially communicated to allow the cooling liquid to flow through sequentially.

[0038] According to the embodiments of the present application, the water inlet nozzle 30 and the water outlet nozzle 40 are located on the same side of the shell 10, which reduces the additional communication water pipe, reduces the fixing points of the shell 10 and the fixing buckle of the water pipe, thereby reducing the number of parts and reducing the cost. Along the length direction of the shell 10, the water inlet and outlet nozzles are located on the same side, and the structure of the motor controller is more compact, saving the layout space.

[0039] According to the embodiments of the present application, the water inlet nozzle 30 and the water outlet nozzle 40 are integrally formed with the shell 10. In addition, the water inlet nozzle 30 and the water outlet nozzle 40 can also be connected with the shell 10 by plug-in fixing, screw fixing and buckle fixing.

[0040] The power module 50 comprises a first power module 51 and a second power module 52. The first power module 51 and the second power module 52 are respectively connected to different motor controller components, and the current in the first power module 51 is greater than the current in the second power module 52. In the length direction of the water channel 11, the first power module 51 is close to the communication part 14 and away from the water outlet nozzle 40, and the second power module 52 is close to the water outlet nozzle 40. The first power module 51 and the second power module 52 are arranged above the upper chamber 12. The cooling liquid flows through the first power module 51 and the second power module 52 from the communication part 14. When the working temperature of the first power module 51 is higher than the working temperature of the second power module 52, the first power module 51 with higher temperature is preferentially cooled, which avoids damage to the first power module 51, improves the reliability of the motor controller, and prolongs the service life of the motor controller.

[0041] The power module 50 further comprises a heat sink 53, and the first power module 51, the second power module 52 and the heat sink 53 are all arranged above the upper chamber 12. The first power module 51 and the second power module 52 are arranged above the heat sink 53. The power module 50 further comprises heat-conducting columns 54 extending downward from the heat sink 53. The heat-conducting columns 54 are arranged in a matrix in the upper chamber 12. The heat-conducting columns 54 abut against the upper surface of the baffle body 21 to press the baffle 20.

[0042] The upper surface of the baffle body 21 is pressed by the heat-conducting columns 54, and the lower part of the baffle body 21 is provided with cured sealant and abuts against the annular outer stepped part 151 and the annular inner stepped part 152 to assist in fixing the position of the baffle 20, so that the baffle 20 does not move with the pressure of the water channel 11 and the cooling liquid.

[0043] According to the embodiments of the present application, the heat-conducting columns 54 are in contact with the cooling liquid in the upper chamber 12, and the heat of the first power module 51 and the second power module 52 can be transferred from the heat sink 53 to the heat-conducting columns 54 and then conducted to the cooling liquid.

[0044] According to other embodiments of the present application, the pin ends of the heat-conducting columns 54 can be welded to the upper surface of the baffle body 21 to improve the connection firmness. In addition, thermally conductive silicone grease can also be filled between the heat-conducting columns 54 and the baffle 20 to enhance the heat conduction efficiency.

[0045] In some embodiments, the first power module 51 comprises first power module units 511 connected to the heat sink 53, and the first power module units 511 are arranged in three.

[0046] The capacitor module 60 is a thin film capacitor arranged below the lower chamber 13. The capacitor module 60 is arranged opposite to the first power module 51 and the second power module 52. That is, the first power module 51 is arranged in front of the upper chamber 12, and the second power module 52 is arranged behind the upper chamber 12, so that the coolant can first cool the capacitor module 60, then cool the first power module 51, and finally cool the second power module 52. The capacitor module 60 is more sensitive to temperature, and preferential cooling can prolong the service life of the capacitor module 60.

[0047] In some embodiments, heat dissipation fins can be added in the lower chamber 13 to directly contact the cooling surface of the capacitor module 60, thereby improving the heat dissipation efficiency of the capacitor module 60.

[0048] The application also provides a vehicle comprising the motor controller described above.

[0049] The application reduces the number of parts, thereby reducing the cost and the weight of the controller assembly, and the motor controller is arranged more conveniently and compactly. In addition, the partition 20 divides the water channel 11 surrounded by the housing 10 and the power module 50 into the upper chamber 12 and the lower chamber 13, and arranges the first power module 51 and the second power module 52 outside the upper chamber 12, so that the first power module 51 with higher temperature can be preferentially cooled, thereby avoiding damage to the first power module 51 and improving the reliability of the motor controller.

[0050] 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 application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the application shall be included in the scope of protection of the application.

Claims

1. An electric motor controller characterized by, The water channel further comprises a communication part, the communication part is arranged in the shell and communicates the upper chamber and the lower chamber; the communication part and the water outlet nozzle are respectively arranged on two sides of the water channel.

2. The motor controller of claim 1, wherein, The water inlet nozzle communicates with the lower chamber, and the water outlet nozzle communicates with the upper chamber; the water inlet nozzle, the lower chamber, the communication part, the upper chamber and the water outlet nozzle are sequentially communicated.

3. The motor controller of claim 2, wherein, The sealing part comprises an outer sealing part arranged at the edge of the partition body, the outer sealing part is arranged below the partition body, the inner wall comprises an annular outer step part protruding upward from the bottom of the shell, the annular outer step part is arranged below the outer sealing part and abuts against the outer sealing part; the outer sealing part is cured sealant.

4. The motor controller of claim 1, wherein, The partition body is provided with a through hole, the shell further comprises a protruding part extending upward from the bottom of the shell, the protruding part is arranged in the through hole; the sealing part comprises an inner sealing part arranged at the edge of the through hole, the inner sealing part is arranged below the partition body, the inner wall comprises an annular inner step part protruding upward from the bottom of the shell, the annular inner step part is arranged below the inner sealing part and abuts against the inner sealing part; the inner sealing part is cured sealant.

5. The motor controller of claim 4, wherein, The power module comprises a first power module, a second power module and a heat dissipation plate arranged above the upper chamber, the first power module and the second power module are arranged on the heat dissipation plate, in the length direction of the water channel, the first power module is away from the water outlet nozzle, and the second power module is close to the water outlet nozzle; the lower chamber is provided with a capacitor module below.

6. The motor controller of claim 4, wherein, The power module further comprises a heat conduction column arranged below the heat dissipation plate, the heat conduction column abuts against the upper surface of the partition.

7. The motor controller of claim 1, wherein, The shell is integrally formed by casting; the partition is assembled in the shell.

8. The motor controller of claim 7, wherein, The motor controller comprises any one of the motor controllers according to claims 1 to 9.

9. The motor controller of claim 1, wherein, ​ 10. A vehicle characterized by comprising: ​

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