Motor controller and vehicle

Abstract

The utility model discloses a motor controller and a vehicle. The motor controller comprises a housing, a bus capacitor and a power module. A mounting groove is formed in the shell, and the bus capacitor is arranged in the mounting groove; the number of the power modules is two, the two power modules and at least part of the bus capacitor are arranged side by side on a plane perpendicular to the thickness direction of the shell, and the shell is provided with a cooling water channel comprising a first cooling water channel, a second cooling water channel and a third cooling water channel which are sequentially connected. The first cooling water channel and the third cooling water channel are respectively opposite to one power module in the thickness direction of the shell, and a part of the second cooling water channel is opposite to the bus capacitor in the thickness direction of the shell. According to the motor controller of the utility model, the cooling effect of the motor controller is good, the service life of the bus capacitor and the power module can be prolonged, the structure is compact, and the installation and application of the motor controller in a vehicle are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of motor controllers, in particular to a motor controller and a vehicle. Background Art

[0002] In related technologies, with the rapid development of industries such as industrial automation and new energy vehicles, the performance requirements for motor controllers are getting higher and higher. As the core component of the motor drive system, the stability and efficiency of the motor controller directly affect the operation of the entire system. As key components in the motor controller, the power module and bus capacitor will generate a lot of heat when working. If the heat cannot be dissipated in time, it will lead to performance degradation and even affect the life.

[0003] In addition, in the prior art, the bus capacitor is generally cooled by placing a heat-conducting material between the bus capacitor and the housing, which has a poor cooling effect. Another method is to place the bus capacitor on the side of the cooling water channel away from the power module to ensure the cooling effect of the bus capacitor, but this easily causes the motor controller to be too large in the thickness direction of the housing, which in turn easily causes structural layout problems when used in vehicles. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a motor controller, which has good cooling effect, can extend the service life of bus capacitors and power modules, has a compact structure and is conducive to its installation and use in vehicles.

[0005] The utility model also provides a vehicle, which comprises the above-mentioned motor controller.

[0006] According to the motor controller of the embodiment of the utility model, it includes: a shell, a bus capacitor and a power module. The shell is provided with a mounting groove; the bus capacitor is arranged in the mounting groove; there are two power modules, and the two power modules and at least part of the bus capacitor are arranged side by side on a plane perpendicular to the thickness direction of the shell; there is a cooling water channel in the shell, and the cooling water channel includes a first cooling water channel, a second cooling water channel and a third cooling water channel connected in sequence, the first cooling water channel and one of the power modules are arranged oppositely in the thickness direction of the shell, part of the second cooling water channel and the bus capacitor are arranged oppositely in the thickness direction of the shell, the third cooling water channel and another power module are arranged oppositely in the thickness direction of the shell, the end of the first cooling water channel away from the second cooling water channel is connected to the water inlet, and the end of the third cooling water channel away from the second cooling water channel is connected to the water outlet.

[0007] According to the motor controller of the embodiment of the utility model, by setting the water inlet, the first cooling water channel, the second cooling water channel, the third cooling water channel and the water outlet which are connected in sequence in the shell, the circulation flow of the coolant in the cooling water channel can be ensured, and by setting the first cooling water channel and the third cooling water channel to be respectively arranged relative to one of the power modules in the thickness direction of the shell, and setting the second cooling water channel so that its part is arranged relative to the bus capacitor in the thickness direction of the shell, the effective cooling of the two power modules and the bus capacitor can be achieved, and the heat dissipation efficiency of the motor controller can be improved. At the same time, the operating temperature of the power module and the bus capacitor can be reduced, and their service life can be extended, thereby improving the reliability and stability of the motor controller. In addition, the power module and the bus capacitor are both arranged on the same side in the thickness direction of the shell, and the cooling water channel has a compact structure, which can enhance the heat dissipation effect of the bus capacitor without increasing the size of the motor controller in the thickness direction of the shell, thereby being more conducive to the installation and use of the motor controller in the vehicle.

[0008] According to some embodiments of the utility model, in the thickness direction of the shell, the bottom wall of the installation groove is farther away from the power module relative to the installation surface of the power module on the shell, and the second cooling water channel includes an inlet, an outlet and a main water channel. The inlet extends along the thickness direction of the shell and one end is connected to the end of the first cooling water channel away from the water inlet; the outlet extends along the thickness direction of the shell and one end is connected to the end of the third cooling water channel away from the water outlet; part of the main water channel is arranged opposite to the installation groove in the thickness direction of the shell, and the busbar capacitor and the heat exchange medium in the main water channel directly exchange heat through the shell between the bottom wall of the installation groove and the main water channel, and the two ends of the main water channel are respectively connected to the end of the inlet away from the first cooling water channel and the end of the outlet away from the third cooling water channel.

[0009] In some embodiments of the present invention, the two power modules are arranged along a first direction, the bus capacitor is arranged on one side of the two power modules along a second direction, the first direction, the second direction and the thickness direction of the shell are perpendicular to each other, and the first cooling water channel and the third cooling water channel extend along the first direction.

[0010] In some embodiments of the utility model, the main water channel includes a first sub-water channel, a second sub-water channel and a third sub-water channel which are connected in sequence, an end of the first sub-water channel facing away from the second sub-water channel is connected to the water inlet, an end of the third sub-water channel facing away from the second sub-water channel is connected to the water outlet, the first sub-water channel and the third sub-water channel are arranged in parallel, the second sub-water channel and the mounting groove are arranged opposite to each other in the thickness direction of the shell, the bus capacitor and the heat exchange medium in the second sub-water channel directly exchange heat through the shell between the bottom wall of the mounting groove and the second sub-water channel, and the second sub-water channel is formed into an open ring.

[0011] In some embodiments of the present invention, the water inlet is perpendicular to the first cooling water channel; and / or the water outlet is perpendicular to the third cooling water channel; and / or the water inlet is parallel to the water outlet; and / or the first cooling water channel is parallel, collinear or coplanar with the third cooling water channel.

[0012] In some embodiments of the utility model, a groove is provided on the side of the shell in the thickness direction away from the power module, and a portion of the groove is arranged opposite to the mounting groove. The motor controller also includes a cooling cover plate, which is arranged at the open mouth of the groove to seal the open mouth of the groove and form the main water channel together with the inner wall of the groove.

[0013] In some embodiments of the present invention, the cooling cover plate and the shell are sealed by welding or by a sealant.

[0014] According to some embodiments of the present invention, a fin is provided on one side of the power module facing the first cooling water channel or the third cooling water channel, and the fins of the two power modules are respectively inserted into the first cooling water channel and the third cooling water channel.

[0015] In some embodiments of the present invention, a sealing ring or a sealing adhesive is provided between the power module and the housing.

[0016] According to some embodiments of the present invention, a heat conducting member is provided between the bus capacitor and the bottom wall of the mounting slot.

[0017] A vehicle according to an embodiment of the utility model includes the above-mentioned motor controller.

[0018] According to the vehicle of the embodiment of the utility model, by setting the water inlet, the first cooling water channel, the second cooling water channel, the third cooling water channel and the water outlet which are connected in sequence in the shell of the motor controller, the circulation flow of the coolant in the cooling water channel can be ensured, and by setting the first cooling water channel and the third cooling water channel to be respectively arranged relative to one of the power modules in the thickness direction of the shell, and setting the second cooling water channel to be arranged relative to the bus capacitor in the thickness direction of the shell, the effective cooling of the two power modules and the bus capacitor can be achieved, and the heat dissipation efficiency of the motor controller can be improved. At the same time, the operating temperature of the power module and the bus capacitor can be reduced, and their service life can be extended, thereby improving the reliability and stability of the motor controller. In addition, the power module and the bus capacitor are both arranged on the same side in the thickness direction of the shell, and the cooling water channel has a compact structure, which can enhance the heat dissipation effect of the bus capacitor without increasing the size of the motor controller in the thickness direction of the shell, thereby being more conducive to the installation and use of the motor controller in the vehicle.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a top view of a motor controller according to an embodiment of the utility model;

[0022] Figure 2 is along Figure 1 Sectional view along line AA;

[0023] Figure 3 is along Figure 1 Sectional view along the midline BB;

[0024] Figure 4 is a top view of a housing of a motor controller according to an embodiment of the utility model;

[0025] Figure 5 is a bottom view of a housing of a motor controller according to an embodiment of the utility model;

[0026] Figure 6 It is a stereoscopic diagram of the housing of the motor controller according to an embodiment of the utility model.

[0027] Reference numerals:

[0028] 100. Motor controller;

[0029] 1. housing; 11. mounting slot; 12. groove;

[0030] 2. Bus capacitance;

[0031] 3. Power module; 31. Fin; 32. First power module; 33. Second power module;

[0032] 4. Cooling water channel; 41. First cooling water channel; 42. Second cooling water channel; 421. Water inlet channel; 422. Water outlet channel; 423. Main water channel; 4231. First sub-water channel; 4232. Second sub-water channel; 4233. Third sub-water channel; 43. Third cooling water channel;

[0033] 5. Water inlet;

[0034] 6. Water outlet;

[0035] 7. Cooling cover;

[0036] 8. DC terminal. DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Reference below Figure 1-Figure 6 A motor controller 100 according to an embodiment of the present invention is described.

[0041] like Figure 1 As shown, the motor controller 100 according to the embodiment of the utility model includes a housing 1 , a bus capacitor 2 and a power module 3 .

[0042] Specifically, Figure 1 As shown, combined Figure 2 and Figure 3 , a mounting groove 11 is provided on the shell 1, and the bus capacitor 2 is arranged in the mounting groove 11, which is used to reduce the voltage amplitude to ensure the stable operation of the power system of the motor controller 100. There are two power modules 3, and the two power modules 3 and at least part of the bus capacitor 2 are arranged side by side on a plane perpendicular to the thickness direction of the shell 1. Specifically, the bus capacitor 2 and the power module 3 are located on the same side of the thickness direction of the shell 1, and at least part of them are on the same horizontal plane perpendicular to the thickness direction of the shell 1. The structural design is reasonable. Compared with the prior art in which the bus capacitor and the power module are stacked in the height direction of the motor controller, this embodiment can reduce the size of the motor controller 100 in the thickness direction of the shell 1. Among them, the bus capacitor 2 and the power module 3 can be provided with positive and negative DC terminals 8, and the bus capacitor 2 and the power module 3 are connected through the positive and negative DC terminals 8.

[0043] Furthermore, a cooling water channel 4 is provided in the shell 1, and the cooling water channel 4 includes a first cooling water channel 41, a second cooling water channel 42 and a third cooling water channel 43 which are connected in sequence. The first cooling water channel 41 and one of the power modules 3 are arranged opposite to each other in the thickness direction of the shell 1, a part of the second cooling water channel 42 and the bus capacitor 2 are arranged opposite to each other in the thickness direction of the shell 1, and the third cooling water channel 43 and another power module 3 are arranged opposite to each other in the thickness direction of the shell 1. An end of the first cooling water channel 41 which faces away from the second cooling water channel 42 is connected to the water inlet 5, and an end of the third cooling water channel 43 which faces away from the second cooling water channel 42 is connected to the water outlet 6.

[0044] When the motor controller 100 is running, the bus capacitor 2 and the power module 3 will generate heat. Figure 1In the example shown, the two power modules 3 are respectively the first power module 32 and the second power module 33. The first power module 32 is arranged opposite to the first cooling water channel 41 in the thickness direction of the housing 1, and the second power module 33 is arranged opposite to the third cooling water channel 43 in the thickness direction of the housing 1. The coolant enters the first cooling water channel 41 from the water inlet 5 and flows through the first power module 32, exchanges heat with the first power module 32, and then enters the second cooling water channel 42. After the heat exchange occurs with the bus capacitor 2 in the second cooling water channel 42, the coolant enters the third cooling water channel 43 from the second cooling water channel 42 and exchanges heat with the second power module 33, and finally flows out of the motor controller 100 from the water outlet 6, thereby completing the heat dissipation of the bus capacitor 2 and the power module 3.

[0045] By providing the first cooling water channel 41, the second cooling water channel 42 and the third cooling water channel 43 connected in sequence in the housing 1, the circulation of the coolant in the cooling water channel 4 can be ensured, and the effective cooling of the two power modules 3 and the bus capacitor 2 can be achieved by coordinating the position layout of the cooling water channel 4, the bus capacitor 2 and the power module 3, thereby improving the heat dissipation efficiency of the motor controller 100. At the same time, the operating temperature of the power module 3 and the bus capacitor 2 can be reduced, and their service life can be extended, thereby improving the reliability and stability of the motor controller 100.

[0046] In addition, compared with the method of dissipating heat from the bus capacitor only by setting a thermally conductive material between the bus capacitor and the shell, the above-mentioned method of setting the first cooling water channel 41, the second cooling water channel 42 and the third cooling water channel 43 can greatly enhance the cooling effect of the bus capacitor 2, thereby extending the service life of the bus capacitor 2 and improving its operating stability.

[0047] In the prior art, the bus capacitor can be arranged on the side of the cooling water channel away from the power module to ensure the cooling effect of the bus capacitor, but such an arrangement easily causes the size of the motor controller to be too large in the thickness direction of the shell. By arranging the power module 3 and the bus capacitor 2 on the same side of the shell 1 in the thickness direction, and connecting the second cooling water channel 42 for cooling the bus capacitor 2 in series between the first cooling water channel 41 and the third cooling water channel 43, the structure of the cooling water channel 4 is made more compact, and the heat dissipation effect of the bus capacitor 2 is enhanced without increasing the size of the motor controller 100 in the thickness direction of the shell 1, preventing the motor controller 100 from occupying too much space in the thickness direction of the shell 1, thereby reducing the space occupied by the motor controller 100 in the thickness direction of the shell 1.

[0048] Specifically, the motor controller 100 is generally installed in the engine compartment of the vehicle or near the chassis of the vehicle. The space in the engine compartment or chassis of the vehicle in the height direction is limited. When installing, the thickness direction of the motor controller 100 in the shell 1 is generally consistent with the height direction of the vehicle. Therefore, the larger size of the motor controller 100 in the thickness direction of the shell 1 is more likely to lead to the inability to find a suitable installation position, that is, reducing the size of the motor controller 100 in the thickness direction of the shell 1 is better than reducing its size in the width direction of the shell 1, which is more conducive to the installation and use of the motor controller 100. When the motor controller 100 is applied to a vehicle, while enhancing the heat dissipation effect of the motor controller 100, it can also avoid the inconvenience of installation or application due to the excessive size of the motor controller 100 in the thickness direction of the shell, thereby ensuring its application scenario.

[0049] It should be noted that the heat generated by the bus capacitor 2 is much smaller than that of the power module 3 , so after the coolant passes through the second cooling water channel 42 and takes away part of the heat of the bus capacitor 2 , it will not affect the cooling of the second power module 33 .

[0050] According to the motor controller 100 of the embodiment of the utility model, by setting the water inlet 5, the first cooling water channel 41, the second cooling water channel 42, the third cooling water channel 43 and the water outlet 6 connected in sequence in the housing 1, the circulation of the coolant in the cooling water channel 4 can be ensured, and by setting the first cooling water channel 41 and the third cooling water channel 43 to be respectively arranged relative to one of the power modules 3 in the thickness direction of the housing 1, and setting the second cooling water channel 42 to be arranged relative to the bus capacitor 2 in the thickness direction of the housing 1, the two power modules 3 and the bus capacitor 2 can be effectively cooled, and the heat dissipation efficiency of the motor controller 100 can be improved. At the same time, the operating temperature of the power module 3 and the bus capacitor 2 can be reduced, and their service life can be extended, thereby improving the reliability and stability of the motor controller 100. In addition, the power module 3 and the bus capacitor 2 are both arranged on the same side in the thickness direction of the housing 1, and the cooling water channel 4 has a compact structure, which can enhance the heat dissipation effect of the bus capacitor 2 without increasing the size of the motor controller 100 in the thickness direction of the housing 1, thereby being more conducive to the installation and use of the motor controller 100 in the vehicle.

[0051] In some embodiments of the present invention, Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, in the thickness direction of the shell 1, the bottom wall of the mounting groove 11 is farther away from the power module 3 relative to the mounting surface of the power module 3 on the shell 1. The second cooling water channel 42 includes an inlet channel 421, an outlet channel 422 and a main water channel 423. The inlet channel 421 extends along the thickness direction of the shell 1 and one end is connected to the end of the first cooling water channel 41 away from the water inlet 5. The outlet channel 422 extends along the thickness direction of the shell 1 and one end is connected to the end of the third cooling water channel 43 away from the water outlet 6. Part of the main water channel 423 is arranged opposite to the mounting groove 11 in the thickness direction of the shell 1. The busbar capacitor 2 and the heat exchange medium in the main water channel 423 directly exchange heat through the shell 1 between the bottom wall of the mounting groove 11 and the main water channel 423. The two ends of the main water channel 423 are respectively connected to the end of the inlet channel 421 away from the first cooling water channel 41 and the end of the outlet channel 422 away from the third cooling water channel 43.

[0052] like Figure 2 In the example shown, the direction of the arrow is the flow direction of the coolant in the cooling water channel 4. After the coolant enters from the water inlet 5, it passes through the first cooling water channel 41, the water inlet channel 421, the main water channel 423, the water outlet channel 422 and the third cooling water channel 43 in sequence, and finally flows out from the water outlet 6, thereby completing the heat dissipation of the bus capacitor 2 and the power module 3.

[0053] It is understandable that part of the main water channel 423 is set to be directly opposite to the installation groove 11 in the thickness direction of the shell 1, and the bus capacitor 2 and the heat exchange medium in the main water channel 423 directly exchange heat through the shell 1 between the bottom wall of the installation groove 11 and the main water channel 423, that is, there is no other component on the shell 1 between the bottom wall of the installation groove 11 and the main water channel 423, only the shell. As a result, when the coolant flows through the main water channel 423, it can exchange heat with the bus capacitor 2, which can improve the cooling effect of the cooling water channel 4 on the bus capacitor 2, thereby extending the service life of the bus capacitor 2 and improving its operating stability. By setting the water inlet 421 and the water outlet 422, it is convenient for the main water channel 423 to be connected with the first cooling water channel 41 and the third cooling water channel 43 to ensure the circulation of the coolant in the cooling water channel 4. Since in the thickness direction of the shell 1, the bottom wall of the mounting groove 11 is farther away from the power module 3 relative to the mounting surface of the power module 3 on the shell 1, the water inlet 421 and the water outlet 422 extend along the thickness direction of the shell 1, which can make more effective use of the space of the shell 1. The reasonable structural layout makes the structure of the cooling water channel 4 more compact, which improves the heat dissipation effect and reduces the occupied volume of the motor controller 100.

[0054] In some embodiments of the present invention, Figure 1 , Figure 2 and Figure 4As shown, the two power modules 3 are arranged along the first direction, and the bus capacitor 2 is arranged on one side of the two power modules 3 along the second direction, and the first direction, the second direction and the thickness direction of the shell 1 are perpendicular to each other. The first cooling water channel 41 and the second cooling water channel 42 extend along the first direction, which is conducive to the heat exchange of the coolant with the two power modules 3 arranged along the first direction in the first cooling water channel 41 and the second cooling water channel 42, thereby improving the cooling effect of the power module 3. The bus capacitor 2 is arranged on one side of the two power modules 3 along the second direction, and the structural design is reasonable, which can prevent the size of the motor controller 100 in the thickness direction of the shell 1 from being too large. It is also convenient to set the water inlet 421 and the water outlet 422 extending in the thickness direction of the shell 1, which can achieve effective use of space and compact structure layout, thereby reducing the volume of the motor controller 100.

[0055] In some embodiments of the present invention, Figure 5 and Figure 6 As shown, the main water channel 423 includes a first sub-water channel 4231, a second sub-water channel 4232 and a third sub-water channel 4233 which are connected in sequence, an end of the first sub-water channel 4231 which faces away from the second sub-water channel 4232 is connected to the water inlet 421, an end of the third sub-water channel 4233 which faces away from the second sub-water channel 4232 is connected to the water outlet 422, the first sub-water channel 4231 and the third sub-water channel 4233 are arranged in parallel, the second sub-water channel 4232 and the mounting groove 11 are arranged opposite to each other in the thickness direction of the shell 1, the bus capacitor 2 and the heat exchange medium in the second sub-water channel 4232 directly exchange heat through the bottom wall of the mounting groove 11 and the shell 1 between the second sub-water channel 4232, and the second sub-water channel 4232 is formed into an open ring.

[0056] It can be understood that the heat of the bus capacitor 2 can be transferred to the bottom wall of the mounting groove 11. The second sub-water channel 4232 is arranged opposite to the mounting groove 11 in the thickness direction of the shell 1. The bus capacitor 2 and the heat exchange medium in the second sub-water channel 4232 directly exchange heat through the bottom wall of the mounting groove 11 and the shell 1 between the second sub-water channel 4232, that is, no other components are arranged on the shell 1 between the bottom wall of the mounting groove 11 and the second sub-water channel 4232, only the shell 1. Thus, the coolant flowing through the second sub-water channel 4232 can exchange heat with the bottom wall of the mounting groove 11, thereby taking away the heat of the bus capacitor 2 and realizing effective cooling of the bus capacitor 2. Among them, the second sub-water channel 4232 is formed as an open ring, which can increase the water channel length of the second sub-water channel 4232, that is, the length of the flow path of the coolant in the second sub-water channel 4232 can be increased, and the cooling effect of the bus capacitor 2 can be further enhanced. Figure 5 In the example shown, the second sub-water channel 4232 is an open circular ring. Of course, the second sub-water channel 4232 can also be formed as an open ring of other shapes, and the present application does not make any specific limitation on this.

[0057] Furthermore, by providing the first sub-water channel 4231 and the third sub-water channel 4233, the second sub-water channel 4232 can be connected to the water inlet channel 421 and the water outlet channel 422, respectively, thereby ensuring the circulation of the coolant in the water inlet channel 421, the water outlet channel 422 and the main water channel 423, and further ensuring the cooling effect on the bus capacitor 2. The first sub-water channel 4231 and the third sub-water channel 4233 are arranged in parallel, so that the structural layout of the main water channel 423 is more neat and compact, which is convenient for processing.

[0058] In some embodiments of the present invention, Figure 2 and Figure 4 As shown, the water inlet 421 is perpendicular to the first cooling water channel 41, the water outlet 422 is perpendicular to the third cooling water channel 43, the water inlet 421 is parallel to the water outlet 422, and the first cooling water channel 41 is parallel, collinear or coplanar with the third cooling water channel 43. Thus, the structural layout of the first cooling water channel 41, the water inlet 421, the water outlet 422 and the third cooling water channel 43 can be made more neat and compact, and the vertical or parallel layout can greatly reduce the difficulty of processing and manufacturing, thereby reducing the cost of production.

[0059] In some embodiments of the present invention, Figure 2 , Figure 3 and Figure 6 As shown, a groove 12 is provided on one side of the housing 1 in the thickness direction away from the power module 3, and a portion of the groove 12 is arranged opposite to the mounting groove 11. The motor controller 100 further includes a cooling cover plate 7, which is arranged at the opening of the groove 12, and is used to cover the opening of the groove 12 and form a main water channel 423 together with the inner wall of the groove 12. The cooling cover plate 7 can be in the form of a flat plate, and the shape and size of the opening of the cooling cover plate 7 and the groove 12 are matched. The main water channel 423 is formed by the groove 12 and the cooling cover plate 7, and the structure is simple and easy to implement. The groove 12 can be integrally die-casted with the housing 1, and the processing is convenient, and the main water channel 423 can be processed in the housing 1 by using a method such as sand casting, thereby greatly reducing the processing cost and improving the production efficiency.

[0060] In some embodiments of the utility model, the cooling cover plate 7 is sealed and connected to the shell 1 by welding or sealing with a sealant, which can ensure the sealing of the cooling cover plate 7 at the open mouth of the groove 12, thereby ensuring the sealing of the main water channel 423 and preventing leakage of the coolant. While ensuring the cooling effect, the safety and reliability of the motor controller 100 are also ensured.

[0061] In some embodiments of the present invention, Figure 2As shown, a fin 31 is provided on one side of the power module 3 facing the first cooling water channel 41 or the third cooling water channel 43, and the fins 31 of the two power modules 3 are respectively inserted into the first cooling water channel 41 and the third cooling water channel 43. By providing the fin 31 on the power module 3 and inserting it into the cooling water channel 4, the contact area between the power module 3 and the coolant can be increased, thereby improving the cooling effect and heat dissipation efficiency of the power module 3, thereby extending the service life of the power module 3 and improving its operating performance.

[0062] In some embodiments of the utility model, a sealing ring or a sealant is provided between the power module 3 and the housing 1. The sealing ring or the sealant is provided in a ring shape between the connection contact surfaces of the power module 3 and the housing 1, which can ensure the sealing of the connection between the power module 3 and the housing 1, thereby ensuring the sealing of the first cooling water channel 41 and the second cooling water channel 42, preventing the leakage of the coolant, ensuring the cooling effect, and also ensuring the safety and reliability of the motor controller 100.

[0063] In some embodiments of the utility model, a heat conductor is provided between the bus capacitor 2 and the bottom wall of the installation groove 11, and the heat conductor can improve the heat conduction efficiency, which helps to conduct the heat from the bus capacitor 2 to the bottom wall of the installation groove 11 more quickly, and then dissipate the heat through the coolant in the main water channel 423, which can improve the cooling effect and heat dissipation efficiency of the bus capacitor 2, thereby extending the service life of the bus capacitor 2 and improving its operating performance.

[0064] A vehicle according to an embodiment of the present invention is described below.

[0065] The vehicle according to the embodiment of the present invention includes the motor controller 100 mentioned above.

[0066] According to the vehicle of the embodiment of the utility model, by setting the water inlet 5, the first cooling water channel 41, the second cooling water channel 42, the third cooling water channel 43 and the water outlet 6 which are connected in sequence in the housing 1 of the motor controller 100, the circulation of the coolant in the cooling water channel 4 can be ensured, and by setting the first cooling water channel 41 and the third cooling water channel 43 to be respectively arranged opposite to one of the power modules 3 in the thickness direction of the housing 1, and setting the second cooling water channel 42 to be arranged opposite to the bus capacitor 2 in the thickness direction of the housing 1, the two power modules 3 and the bus capacitor 2 can be effectively cooled, and the heat dissipation efficiency of the motor controller 100 can be improved. At the same time, the operating temperature of the power module 3 and the bus capacitor 2 can be reduced, and their service life can be extended, thereby improving the reliability and stability of the motor controller 100. In addition, the power module 3 and the bus capacitor 2 are arranged on the same side in the thickness direction of the housing, and the cooling water channel 4 has a compact structure, which can enhance the heat dissipation effect of the bus capacitor 2 without increasing the size of the motor controller 100 in the thickness direction of the housing 1, thereby being more conducive to the installation and use of the motor controller 100 in the vehicle.

[0067] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0068] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A motor controller, characterized in that: include: A housing, wherein a mounting groove is provided on the housing; A bus capacitor, wherein the bus capacitor is arranged in the installation groove; A power module, wherein there are two power modules, and the two power modules and at least part of the bus capacitor are arranged side by side on a plane perpendicular to the thickness direction of the shell; The shell has a cooling water channel, and the cooling water channel includes a first cooling water channel, a second cooling water channel and a third cooling water channel connected in sequence. The first cooling water channel and one of the power modules are arranged opposite to each other in the thickness direction of the shell, a part of the second cooling water channel and the bus capacitor are arranged opposite to each other in the thickness direction of the shell, and the third cooling water channel and another power module are arranged opposite to each other in the thickness direction of the shell. One end of the first cooling water channel facing away from the second cooling water channel is connected to a water inlet, and one end of the third cooling water channel facing away from the second cooling water channel is connected to a water outlet.

2. The motor controller according to claim 1, characterized in that: In the thickness direction of the shell, the bottom wall of the mounting groove is farther away from the power module than the mounting surface of the power module on the shell, and the second cooling water channel includes: a water inlet channel, the water inlet channel extending along the thickness direction of the shell and having one end connected to an end of the first cooling water channel away from the water inlet; a water outlet channel, the water outlet channel extending along the thickness direction of the shell and having one end connected to an end of the third cooling water channel away from the water outlet; A main water channel, part of which is directly opposite to the mounting groove in the thickness direction of the shell, the busbar capacitor and the heat exchange medium in the main water channel directly exchange heat through the shell between the bottom wall of the mounting groove and the main water channel, and the two ends of the main water channel are respectively connected to an end of the water inlet channel facing away from the first cooling water channel and an end of the water outlet channel facing away from the third cooling water channel.

3. The motor controller according to claim 2, characterized in that: The two power modules are arranged along a first direction, the bus capacitor is arranged on one side of the two power modules along a second direction, the first direction, the second direction and the thickness direction of the shell are perpendicular to each other, and the first cooling water channel and the third cooling water channel extend along the first direction.

4. The motor controller according to claim 3, characterized in that: The main waterway includes: The first sub-water channel, the second sub-water channel and the third sub-water channel are connected in sequence, the end of the first sub-water channel facing away from the second sub-water channel is connected to the water inlet channel, the end of the third sub-water channel facing away from the second sub-water channel is connected to the water outlet channel, the first sub-water channel and the third sub-water channel are arranged in parallel, the second sub-water channel and the installation groove are arranged opposite to each other in the thickness direction of the shell, the bus capacitor and the heat exchange medium in the second sub-water channel directly exchange heat through the shell between the bottom wall of the installation groove and the second sub-water channel, and the second sub-water channel is formed into an open ring.

5. The motor controller according to claim 2, characterized in that: The water inlet channel is perpendicular to the first cooling water channel; And / or, the water outlet channel and the third cooling water channel are perpendicular; and / or, the water inlet and the water outlet are parallel; And / or, the first cooling water channel and the third cooling water channel are parallel, collinear or coplanar.

6. The motor controller according to claim 2, characterized in that: A groove is provided on one side of the shell in the thickness direction away from the power module, and a portion of the groove is arranged opposite to the mounting groove. The motor controller further includes: A cooling cover plate is arranged at the opening of the groove, and is used to cover the opening of the groove and form the main water channel together with the inner wall of the groove.

7. The motor controller according to claim 6, characterized in that: The cooling cover plate is sealed and connected to the shell by welding or by sealant.

8. The motor controller according to claim 1, characterized in that: A fin is provided on one side of the power module facing the first cooling water channel or the third cooling water channel, and the fins of the two power modules are respectively inserted into the first cooling water channel and the third cooling water channel.

9. The motor controller according to claim 8, characterized in that: A sealing ring or sealing glue is provided between the power module and the housing.

10. The motor controller according to claim 1, characterized in that: A heat conducting member is provided between the busbar capacitor and the bottom wall of the mounting groove.

11. A vehicle, characterized in that: Comprising a motor controller according to any one of claims 1-10.

Images