Motor controller, motor and vehicle

Abstract

The utility model relates to the technical field of motor control, and particularly discloses a motor controller, a motor and a vehicle, the motor controller comprises a shell, a filtering assembly, a capacitor assembly and a control driving assembly; the shell comprises a first side and a second side which are oppositely arranged, the first side is provided with a first containing cavity and a second containing cavity which are separated from each other, and the second side is provided with a cooling channel; the filtering assembly is electrically connected with the capacitor assembly, and the filtering assembly and the capacitor assembly are encapsulated in the first accommodating cavity; the control driving assembly is installed in the second containing cavity and electrically connected with the capacitor assembly. The filter assembly, the capacitor assembly and the shell are integrated and encapsulated, so that the integration level is increased, mounting parts and shells of the filter assembly and the capacitor assembly can be reduced, and the cost is reduced. After integration, centralized cooling and heat dissipation can be achieved through the cooling channel on the second side, and the heat dissipation performance is improved. And the filtering assembly is vacuum-encapsulated on the shell, so that the sealing performance can be improved, the condensation risk can be improved or avoided, and the insulation capability can be improved.

Description

Technical Field

[0001] This utility model relates to the field of motor control technology, specifically to a motor controller, a motor, and a vehicle. Background Technology

[0002] Motor controllers typically include a housing and functional components such as a filter module, capacitor module, and cooling box, with the functional components integrated into the housing.

[0003] However, current motor controllers suffer from problems such as heat dissipation difficulties, high costs, poor sealing, and high risk of condensation. Utility Model Content

[0004] This application provides a motor controller, a motor, and a vehicle. The motor controller can improve heat dissipation performance, reduce costs, improve sealing performance, and mitigate or avoid the risk of condensation.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application is: to provide a motor controller, which includes a housing, a filter assembly, a capacitor assembly, and a control drive assembly; the housing includes a first side and a second side disposed opposite to each other, the first side having a first accommodating cavity and a second accommodating cavity spaced apart from each other, and the second side having a cooling channel; the filter assembly and the capacitor assembly are electrically connected, and the filter assembly and the capacitor assembly are encapsulated in the first accommodating cavity; the control drive assembly is installed in the second accommodating cavity and is electrically connected to the capacitor assembly.

[0006] The first accommodating cavity is provided with an isolation section, the capacitor assembly is located on the side of the isolation section facing the second accommodating cavity, and the filter assembly is located on the side of the isolation section facing away from the second accommodating cavity.

[0007] The first accommodating cavity is provided with a first positioning post; the capacitor assembly includes a capacitor core, a first copper busbar and a positioning bracket. The capacitor core and the first copper busbar are welded to form an integral structure and assembled on the positioning bracket. The positioning bracket is installed in conjunction with the first positioning post.

[0008] The control drive assembly includes an integrated control drive board and a three-phase interface. The three-phase interface is located on the side of the integrated control drive board facing the first accommodating cavity and is connected to the first copper busbar.

[0009] The first accommodating cavity is provided with a second positioning post; the filter assembly includes a circuit board, a first magnetic ring and a second copper busbar, the first magnetic ring is connected to the side of the circuit board facing the first accommodating cavity, and the first magnetic ring is sleeved on the outer periphery of the second copper busbar; the housing is provided with a high-voltage interface, and the opposite ends of the second copper busbar are respectively connected to the high-voltage interface and the capacitor assembly; the circuit board is provided with positioning holes, and the positioning holes are installed in conjunction with the second positioning post.

[0010] The filter assembly also includes a third copper busbar, a second magnetic ring, a first capacitor, and a second capacitor. The third copper busbar and the first capacitor are both soldered onto the circuit board. The second magnetic ring is fitted around the outer periphery of the second copper busbar. The first capacitor is located between the first magnetic ring and the second magnetic ring. The second capacitor is soldered onto the second copper busbar. The first magnetic ring, the second magnetic ring, the second copper busbar, the third copper busbar, the first capacitor, and the second capacitor are all located on the same side of the circuit board.

[0011] The shell also includes a water-cooled plate, which is covered on the second side. The water-cooled plate has an inlet and an outlet at opposite ends, and both the inlet and outlet are connected to the cooling channel.

[0012] The cooling channel includes a first channel connected to the liquid inlet and a second channel connected to the liquid outlet, with the first channel connecting to the second channel; the projection of the first channel toward the first side is located in the second accommodating cavity, and the projection of the second channel toward the first side is located in the first accommodating cavity.

[0013] This application also includes a second technical solution, providing a motor, including the motor controller described above.

[0014] This application also includes a third technical solution, providing a vehicle including the aforementioned motor.

[0015] The advantages of this application are as follows: Unlike existing technologies, the motor controller provided in this application includes a housing, a filter assembly, a capacitor assembly, and a control drive assembly. The housing includes a first side and a second side arranged opposite to each other. The first side has a first accommodating cavity and a second accommodating cavity spaced apart from each other, and the second side has a cooling channel. The filter assembly and the capacitor assembly are electrically connected, and the filter assembly and the capacitor assembly are encapsulated within the first accommodating cavity. The control drive assembly is installed within the second accommodating cavity and is electrically connected to the capacitor assembly. By integrating the filter assembly, capacitor assembly, and housing into a single encapsulation, this application increases integration, reduces the number of mounting parts for the filter assembly and capacitor assembly, reduces the size of the filter assembly and capacitor assembly's housing, and lowers costs. After integration, heat dissipation can be concentrated through the cooling channel on the second side, improving heat dissipation performance. Vacuum encapsulating the filter assembly onto the housing also improves sealing, mitigates or avoids the risk of condensation, and enhances insulation capabilities. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0017] Figure 1This is a schematic diagram of the structure of an embodiment of the motor controller of this application. The motor controller includes a housing, a filter assembly, a capacitor assembly, and a control drive assembly. The housing includes a first side and a second side disposed opposite to each other, and a water-cooling plate.

[0018] Figure 2 yes Figure 1 A schematic diagram of the structure of the first side of the middle housing, the filter assembly, and the capacitor assembly in one embodiment;

[0019] Figure 3 yes Figure 1 A schematic diagram of the structure of the first side of the middle housing and the control drive assembly according to an embodiment;

[0020] Figure 4 yes Figure 1 A schematic diagram of the structure of an embodiment of the intermediate filtering component;

[0021] Figure 5 yes Figure 1 A schematic diagram of the structure of the second side of the middle shell and the water-cooling plate in one embodiment.

[0022] Reference numerals: 1. Housing; 11. First side; 111. First accommodating cavity; 1111. First positioning post; 1112. Second positioning post; 1113. Isolation part; 112. Second accommodating cavity; 12. Second side; 121. Cooling channel; 1211. First channel; 1212. Second channel; 13. High-pressure interface; 14. Water-cooled plate; 141. Liquid inlet; 142. Liquid outlet; 2. Filter assembly; 21. First magnetic ring; 22. Second copper busbar; 23. Third copper busbar; 24. Circuit board; 241. Positioning hole; 25. First capacitor; 26. Second capacitor; 27. Second magnetic ring; 3. Capacitor assembly; 31. First copper busbar; 32. Capacitor core; 33. Positioning bracket; 331. Bracket positioning hole; 4. Control and drive assembly; 41. Integrated control and drive board; 42. Three-phase interface; 100. Motor controller. Detailed Implementation

[0023] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0024] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] Please refer to the reference. Figures 1 to 3 as well as Figure 5 , Figure 1 This is a schematic diagram of an embodiment of the motor controller provided in this application. Figure 2 yes Figure 1 A schematic diagram of the structure of the first side of the middle housing, the filter assembly, and the capacitor assembly in one embodiment. Figure 3 yes Figure 1 A schematic diagram of the structure of the first side of the middle housing and the control drive assembly in one embodiment. Figure 5 yes Figure 1A schematic diagram of the structure of the second side of the housing and the water-cooled plate in one embodiment. In one aspect, this application provides a motor controller 100, which includes a housing 1, a filter assembly 2, a capacitor assembly 3, and a control drive assembly 4. The housing 1 includes a first side 11 and a second side 12 disposed opposite to each other. The first side 11 has a first accommodating cavity 111 and a second accommodating cavity 112 spaced apart from each other, and the second side 12 has a cooling channel 121. The filter assembly 2 and the capacitor assembly 3 are electrically connected, and the filter assembly 2 and the capacitor assembly 3 are encapsulated within the first accommodating cavity 111. The control drive assembly 4 is installed within the second accommodating cavity 112 and is electrically connected to the capacitor assembly 3. This application increases integration by integrating the filter assembly 2, the capacitor assembly 3, and the housing 1 into a single encapsulation, reducing the number of mounting parts for the filter assembly 2 and the capacitor assembly 3, reducing the size of the housing for the filter assembly 2 and the capacitor assembly 3, and lowering costs. After integration, heat dissipation can be concentrated through the cooling channel 121 of the second side 12, improving heat dissipation performance. Vacuum-filling the filter component 2 onto the housing 1 can improve sealing, mitigate or eliminate the risk of condensation, and enhance insulation capabilities.

[0028] Specifically, in combination Figure 1 and Figure 5 As shown, the size range of the cooling channel 121 on the second side 12 can cover the first accommodating cavity 111 and the second accommodating cavity 112, so that the filter component 2, the capacitor component 3, and the control drive component 4 are all within the cooling range of the cooling channel 121, thereby improving heat dissipation performance. In a specific embodiment, by cooling the functional components on the first side 11 through the cooling channel 121 on the second side 12, the original temperature of the filter component 2 and the capacitor component 3 can be reduced by at least 8%, and the current capability can be increased by 15%. The first accommodating cavity 111 and the second accommodating cavity 112 are separated from each other, which can play a role in EMC (Electromagnetic Compatibility) isolation and protection, and can also improve or avoid the leakage of potting compound in the first accommodating cavity 111 into the second accommodating cavity 112 during the potting process.

[0029] During use, the positive and negative high voltage currents of the battery pass through the filter component 2 in sequence and then enter the capacitor component 3. After being stored in the capacitor component 3, the current is input to the control drive component 4, and after being converted from DC to AC, it is output to the motor.

[0030] In one embodiment of this application, as Figure 2 As shown, the first accommodating cavity 111 is provided with an isolation section 1113, the capacitor assembly 3 is located on the side of the isolation section 1113 facing the second accommodating cavity 112, and the filter assembly 2 is located on the side of the isolation section 1113 facing away from the second accommodating cavity 112.

[0031] Specifically, the isolation section 1113 can extend from one end of the first accommodating cavity 111 to the other end, dividing the first accommodating cavity 111 into two parts. The first part is located on the side of the isolation section 1113 facing away from the second accommodating cavity 112, and is used to accommodate the filter assembly 2. The second part is located on the side of the isolation section 1113 facing the accommodating cavity, and is used to accommodate the capacitor assembly 3, thereby forming a current path that sequentially passes through the filter assembly 2, the capacitor assembly 3, and the control drive assembly 4. The isolation section 1113 can also serve as EMC isolation and protection for the filter assembly 2 and the capacitor assembly 3. Furthermore, there can be a gap between the isolation section 1113 and the other end of the first accommodating cavity 111, through which the filter assembly 2 and the capacitor assembly 3 can be electrically connected.

[0032] In one embodiment of this application, as Figure 1 As shown, a first positioning post 1111 is provided inside the first accommodating cavity 111; the capacitor assembly 3 includes a capacitor core 32, a first copper busbar 31, and a positioning bracket 33. The capacitor core 32 and the first copper busbar 31 are welded to form an integral structure and assembled on the positioning bracket 33, which can reduce the number of installation parts, reduce the size, and lower the cost. The positioning bracket 33 is installed in conjunction with the first positioning post 1111 to fix the capacitor assembly 3, thereby limiting the displacement of the capacitor assembly 3 during the potting process and improving stability.

[0033] Specifically, the positioning bracket 33 is provided with a bracket positioning hole 331, through which the first positioning post 1111 passes to fix the capacitor assembly 3. The positioning bracket 33 also protects the capacitor core 32 and provides insulation. The first copper busbar 31 includes interface groups located on opposite sides of the capacitor core 32. Each interface group includes several positive interfaces and several negative interfaces. One interface group extends into the second accommodating cavity 112, and the other interface group passes through the gap to realize the electrical connection between the capacitor assembly 3 and the control drive assembly 4 and the filter assembly 2, respectively.

[0034] In one embodiment of this application, as Figure 2 As shown, the control drive assembly 4 includes a control drive integrated board 41 and a three-phase interface 42. The three-phase interface 42 is located on the side of the control drive integrated board 41 facing the first accommodating cavity 111, and the three-phase interface 42 is connected to the first copper busbar 31 to realize the electrical connection between the control drive assembly 4 and the capacitor assembly 3.

[0035] Specifically, the three-phase interface 42 also includes several positive interfaces and several negative interfaces, each corresponding to an interface group of the first copper busbar 31 to achieve electrical connection. The control drive component 4 is also within the cooling range of the cooling channel 121, and can be dissipated and protected through the cooling channel 121 on the second side 12. Furthermore, the control drive component 4 also includes an IGBT (Insulated Gate Bipolar Transistor) and a current sensor, etc., to invert the current from DC to AC.

[0036] In one embodiment of this application, the following combination is continued... Figure 1 The first accommodating cavity 111 is provided with a second positioning post 1112; the filter assembly 2 includes a circuit board 24, a first magnetic ring 21 and a second copper busbar 22. The first magnetic ring 21 is connected to the side of the circuit board 24 facing the first accommodating cavity 111, and the first magnetic ring 21 is sleeved on the outer periphery of the second copper busbar 22; the housing 1 is provided with a high voltage interface 13, and the opposite ends of the second copper busbar 22 are respectively connected to the high voltage interface 13 and the capacitor assembly 3; the circuit board 24 is provided with a positioning hole 241, and the positioning hole 241 is fitted with the second positioning post 1112 for installation.

[0037] Specifically, the first magnetic ring 21 and the second copper busbar 22 are located on the same side of the circuit board 24, which reduces the height of the filter assembly 2 towards the first accommodating cavity 111 and reduces the volume of the filter assembly 2. The high-voltage interface 13 can be used to receive the high-voltage current output by the battery. The two ends of the second copper busbar 22 are respectively provided with positive and negative interfaces, which are electrically connected to the high-voltage interface 13 and the interface group, respectively. The high-voltage positive and negative current output by the battery can be input from the high-voltage interface 13, passed through the second copper busbar 22 to the filter assembly 2, and after filtering, enters the capacitor assembly 3 through the second copper busbar 22. The circuit board 24 is provided with a positioning hole 241, and the corresponding first accommodating cavity 111 is provided with a second positioning post 1112. The second positioning post 1112 passes through the positioning hole 241 to realize the fixing function of the filter assembly 2. The filter assembly 2 can also realize the limiting function during the potting process through the circuit board 24, thereby improving stability.

[0038] Furthermore, combined Figure 4 As shown, Figure 4 yes Figure 1A schematic diagram of one embodiment of the filtering component 2 is shown. The filtering component 2 further includes a third copper busbar 23, a second magnetic ring 27, a first capacitor 25, and a second capacitor 26. The third copper busbar 23 and the first capacitor 25 are both soldered onto the circuit board 24. The second magnetic ring 27 is sleeved on the outer periphery of the second copper busbar 22. The first capacitor 25 is located between the first magnetic ring 21 and the second magnetic ring 27. The second capacitor 26 is soldered onto the second copper busbar 22. The first magnetic ring 21, the second magnetic ring 27, the second copper busbar 22, the third copper busbar 23, the first capacitor 25, and the second capacitor 26 are all located on the same side of the circuit board 24 to reduce the size of the filtering component 2 and lower costs. In a specific embodiment, the first capacitor 25 can be an X capacitor to suppress electromagnetic interference, the second capacitor 26 can be a Y capacitor to filter common-mode interference in the circuit, the first magnetic ring 21 can be a manganese-zinc magnetic ring to suppress electromagnetic interference, and the second magnetic ring 27 can be a nano magnetic ring to reduce energy loss and improve performance and stability. In another specific embodiment, the filter component 2 can also use other functional devices and combinations, which can be adjusted according to the differences in the EMC test results of the electronic control system.

[0039] In one embodiment of this application, as Figure 5 As shown, the housing 1 also includes a water-cooled plate 14, which is covered on the second side 12. The water-cooled plate 14 has an inlet 141 and an outlet 142 at opposite ends, and both the inlet 141 and the outlet 142 are connected to the cooling channel 121.

[0040] Specifically, the water-cooled plate 14 can be fixed to the housing 1 by welding or screwing to form an integral structure, thereby covering, protecting and sealing the cooling channel 121, improving or preventing coolant leakage. The coolant can sequentially pass through the inlet 141, the cooling channel 121 and the outlet 142, and exchange heat with the control drive component 4, the capacitor component 3 and the filter component 2, thereby achieving heat dissipation protection and improving heat dissipation performance.

[0041] Furthermore, the liquid inlet 141 corresponds to the second accommodating cavity 112, and the liquid outlet 142 corresponds to the first accommodating cavity 111.

[0042] The cooling channel 121 includes a first channel 1211 communicating with the liquid inlet 141 and a second channel 1212 communicating with the liquid outlet 142. The first channel 1211 communicates with the second channel 1212. The projection of the first channel 1211 toward the first side 11 is located in the second accommodating cavity 112, and the projection of the second channel 1212 toward the first side 11 is located in the first accommodating cavity 111.

[0043] Because the IGBT operates at high temperatures, the above structure allows the coolant to first pass through the first channel 1211 to dissipate heat from the IGBT's cooling plate, and then through the second channel 1212 to dissipate heat from the capacitor assembly 3 and the filter assembly 2, thereby improving the heat dissipation effect. Of course, in another embodiment, the positions of the inlet 141 and outlet 142 can also be adjusted according to actual needs.

[0044] In one specific embodiment, the first channel 1211 can be a straight channel in the shape of a "1" to quickly dissipate heat from the cooling plate of the IGBT through the coolant, thereby improving the cooling efficiency. The second channel 1212 can be a serpentine channel to increase the contact area between the coolant and the first accommodating cavity 111, thereby improving the heat dissipation and cooling effect.

[0045] In another aspect, this application also provides an electric motor that includes the motor controller 100 described above. Specifically, since the motor includes the motor controller 100 described in the above embodiments, it also has the beneficial effects of the motor controller 100 described above, which will not be repeated here.

[0046] In another aspect, this application also provides a vehicle that includes the aforementioned motor. Specifically, since the vehicle includes the motor described in the above embodiments, it also possesses the beneficial effects of the aforementioned motor, which will not be elaborated further here.

[0047] It should be noted that the terms "horizontal" and "vertical" do not imply that the components must be absolutely horizontal or vertical, but rather that they can be slightly tilted. Similarly, the terms "parallel" and "perpendicular" do not imply that the components are absolutely parallel or perpendicular, but rather that they can have a certain angular deviation. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted. In addition, the orientations or positional relationships indicated by terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" are based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships that are commonly used when the product of this application is in use. They are only for the purpose of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0048] It is understood that the term "multiple" in this document means at least two, such as two, three, etc., unless otherwise specified. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices. The term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0049] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A motor controller, characterized in that, include: The housing (1) includes a first side (11) and a second side (12) disposed opposite to each other. The first side (11) is provided with a first accommodating cavity (111) and a second accommodating cavity (112) separated from each other, and the second side (12) is provided with a cooling channel (121). A filter assembly (2) and a capacitor assembly (3) are electrically connected, and the filter assembly (2) and the capacitor assembly (3) are encapsulated in the first accommodating cavity (111). A control drive assembly (4) is installed in the second accommodating cavity (112) and is electrically connected to the capacitor assembly (3).

2. The motor controller according to claim 1, characterized in that, The first accommodating cavity (111) is provided with an isolation section (1113), the capacitor assembly (3) is located on the side of the isolation section (1113) facing the second accommodating cavity (112), and the filter assembly (2) is located on the side of the isolation section (1113) facing away from the second accommodating cavity (112).

3. The motor controller according to claim 1, characterized in that, The first accommodating cavity (111) is provided with a first positioning post (1111); The capacitor assembly (3) includes a capacitor core (32), a first copper busbar (31) and a positioning bracket (33). The capacitor core (32) is welded to the first copper busbar (31) to form an integral structure and is assembled on the positioning bracket (33). The positioning bracket (33) is installed in conjunction with the first positioning post (1111).

4. The motor controller according to claim 3, characterized in that, The control drive assembly (4) includes a control drive integrated board (41) and a three-phase interface (42). The three-phase interface (42) is located on the side of the control drive integrated board (41) facing the first accommodating cavity (111), and the three-phase interface (42) is connected to the first copper busbar (31).

5. The motor controller according to claim 1, characterized in that, The first accommodating cavity (111) is provided with a second positioning post (1112); The filter assembly (2) includes a circuit board (24), a first magnetic ring (21) and a second copper busbar (22). The first magnetic ring (21) is connected to the side of the circuit board (24) facing the first accommodating cavity (111), and the first magnetic ring (21) is sleeved on the outer periphery of the second copper busbar (22). The housing (1) is provided with a high-voltage interface (13), and the two ends of the second copper busbar (22) are respectively connected to the high-voltage interface (13) and the capacitor assembly (3); The circuit board (24) is provided with a positioning hole (241), which is installed in conjunction with the second positioning post (1112).

6. The motor controller according to claim 5, characterized in that, The filter assembly (2) further includes a third copper busbar (23), a second magnetic ring (27), a first capacitor (25), and a second capacitor (26). The third copper busbar (23) and the first capacitor (25) are both soldered onto the circuit board (24). The second magnetic ring (27) is sleeved on the outer periphery of the second copper busbar (22). The first capacitor (25) is located between the first magnetic ring (21) and the second magnetic ring (27). The second capacitor (26) is soldered onto the second copper busbar (22). The first magnetic ring (21), the second magnetic ring (27), the second copper busbar (22), the third copper busbar (23), the first capacitor (25), and the second capacitor (26) are all located on the same side of the circuit board (24).

7. The motor controller according to claim 1, characterized in that, The housing (1) also includes a water-cooled plate (14), which is covered on the second side (12). The water-cooled plate (14) has an inlet (141) and an outlet (142) at opposite ends, and both the inlet (141) and the outlet (142) are connected to the cooling channel (121).

8. The motor controller according to claim 7, characterized in that, The cooling channel (121) includes a first channel (1211) communicating with the liquid inlet (141) and a second channel (1212) communicating with the liquid outlet (142), wherein the first channel (1211) is connected to the second channel (1212); The projection of the first channel (1211) toward the first side (11) is located in the second accommodating cavity (112), and the projection of the second channel (1212) toward the first side (11) is located in the first accommodating cavity (111).

9. An electric motor, characterized in that, Includes the motor controller as described in any one of claims 1-8.

10. A vehicle, characterized in that, Includes the motor as described in claim 9.

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