Motor controller

Abstract

The utility model relates to the technical field of motor control, and particularly provides a motor controller, which comprises a box body assembly, a filtering assembly, a power module assembly and a three-phase assembly, the box body assembly comprises a box body, a cover plate and a filtering shielding plate, the box body and the cover plate define a cavity, and the filtering assembly, the power module assembly and the three-phase assembly are distributed in the cavity in the X direction and are electrically connected in sequence; the first area is provided with a first inner side wall protruding in the Z direction, the first inner side wall and the filtering shielding plate define a filtering cavity, and the filtering assembly is contained in the filtering cavity. The modular layout is adopted, the integration level is high, the occupied space is small, assembly is convenient, and batch production is facilitated. Besides, a local cavity structure design is adopted for a filtering area in the box body, and a filtering shielding plate is additionally arranged to isolate a filtering assembly into an independent cavity, so that a space coupling path of electromagnetic interference is effectively cut off.

Description

Technical Field

[0001] The present application relates to the technical field of motor control, and specifically proposes a motor controller. Background Art

[0002] With the rapid development of new energy vehicles, people have higher and higher requirements for electronic control systems. For example, the motor controller, as its core component, needs to meet the requirements of high power and high voltage in a limited space.

[0003] However, the increase in power and voltage will lead to higher requirements for filtering and interference shielding in the motor controller. The required components will take up more space and will also require a large area of ​​heat dissipation, which will further increase the overall size of the motor controller and is not conducive to improving the space utilization of new energy vehicles. Utility Model Content

[0004] The purpose of this application is to solve at least some of the technical problems mentioned above, and this purpose is achieved through the following technical solutions:

[0005] The present application proposes a motor controller, which includes a box assembly, a filter assembly, a power module assembly and a three-phase assembly; the box assembly includes a box, a cover plate and a filter shielding plate, the box and the cover plate enclose a cavity, the cavity includes a first area, a second area and a third area distributed along the X direction, the filter assembly is located in the first area, the power module assembly is located in the second area, and the three-phase assembly is located in the third area, and the filter assembly, the power module assembly and the three-phase assembly are electrically connected in sequence; the first area has a first inner side wall protruding along the Z direction, the first inner side wall and the filter shielding plate enclose a filter cavity, and the filter assembly is accommodated in the filter cavity.

[0006] In some embodiments, the filter assembly includes a filter bracket, a filter main body component and a first capacitor assembly; the filter bracket is connected to the box body, the filter main body component and the first capacitor assembly are respectively connected to the Z-direction ends of the filter bracket, and the filter main body component is electrically connected to the first capacitor assembly.

[0007] In some embodiments, the main filter element includes a busbar copper bar, a transfer copper bar, a first magnetic ring, a second magnetic ring and a third magnetic ring; the busbar copper bar passes through the first magnetic ring and the second magnetic ring in sequence and is close to the third magnetic ring, and the transfer copper bar passes through the filter bracket along the Z direction and electrically connects the busbar copper bar and the first capacitor assembly.

[0008] In some embodiments, the filtering main component further includes a discharge resistor, which is electrically connected in parallel with the first capacitor component.

[0009] In some embodiments, the power module assembly includes a circuit board, a module component, a heat sink and a second capacitor assembly; the circuit board, the heat sink and the second capacitor assembly are connected in sequence along the Z direction, and the heat sink is provided with an installation groove on the side facing the circuit board, and the module component is embedded in the installation groove; the module component and the second capacitor assembly are electrically connected to the circuit board.

[0010] In some embodiments, the heat sink is provided with a plurality of mounting grooves along the Y direction, and the module elements are provided with a plurality of modules, and the plurality of module elements are respectively enclosed with the plurality of mounting grooves to form a plurality of sealed cavities, and each sealed cavity is provided with an inlet hole and an outlet hole at both ends along the X direction; a plurality of fluid channels are provided on the side of the second capacitor component facing the heat sink, and the plurality of fluid channels are filled with heat dissipation fluid, and the heat dissipation fluid in the plurality of fluid channels flows through the plurality of sealed cavities through the inlet hole and the outlet hole respectively.

[0011] In some embodiments, multiple fluid channels are connected in parallel and have a common liquid inlet and outlet, and the sizes of the inlet and outlet holes of each sealed cavity are arranged from large to small according to their distance from the liquid inlet.

[0012] In some embodiments, the circuit board includes a low-voltage plug-in, and the box assembly also includes a low-voltage plug-in shielding plate. One end of the second area along the Y direction has a second inner side wall protruding along the Z direction. The second inner side wall and the low-voltage plug-in shielding plate are combined to form a low-pressure cavity, and the low-voltage plug-in is located in the low-pressure cavity.

[0013] In some embodiments, the second capacitor component is provided with an electrical input end, which is electrically connected to the filter component; the circuit board is provided with an electrical output end, which is electrically connected to the three-phase component, and the electrical output end is provided with a current sensor.

[0014] In some embodiments, the three-phase assembly includes a first three-phase bracket, a second three-phase bracket, a fourth magnetic ring and a three-phase copper busbar; the first three-phase bracket and the second three-phase bracket are connected along the Z direction and enclosed to form a magnetic ring cavity, the fourth magnetic ring is located in the magnetic ring cavity, and the three-phase copper busbar is connected to the first three-phase bracket and the second three-phase bracket along the Z direction and passes through the fourth magnetic ring.

[0015] The technical solution proposed in this application has at least the following technical effects:

[0016] In this application, the filter assembly, power module assembly, and three-phase assembly are arranged sequentially along the X-axis within the cavity enclosed by the housing and cover. This modular layout offers high integration, small footprint, and easy assembly, facilitating mass production. Furthermore, a localized cavity structure design is employed for the filter area, and a filter shield is added to isolate the filter assembly into a separate cavity, effectively cutting off the spatial coupling path of electromagnetic interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to better integrate the contents shown in the drawings with the contents described in the specific embodiments, a brief introduction to the drawings is given below. It is understood that the drawings mentioned below are only schematic illustrations of the relevant technical solutions and some embodiments of the technical solutions of this application. Without making any creative efforts, those skilled in the art can also create drawings showing other embodiments.

[0018] Specifically, the annotations to the drawings of the specification are as follows:

[0019] Figure 1 A top view of a motor controller (with the cover removed) according to some embodiments of the present application;

[0020] Figure 2 A top view of a cover plate according to some embodiments of the present application;

[0021] Figure 3 A top view of a box assembly (without the cover) according to some embodiments of the present application;

[0022] Figure 4 is an axonometric view of a box according to some embodiments of the present application;

[0023] Figure 5 An exploded view of a filter assembly according to some embodiments of the present application;

[0024] Figure 6 A top view of a filter assembly according to some embodiments of the present application;

[0025] Figure 7 An exploded view of a power module assembly according to some embodiments of the present application;

[0026] Figure 8 A top view of a heat dissipation plate according to some embodiments of the present application;

[0027] Figure 9 A bottom view of a heat dissipation plate according to some embodiments of the present application;

[0028] Figure 10 This is an exploded view of a three-phase assembly according to some embodiments of the present application.

[0029] Specifically, the annotations of the accompanying drawings are as follows:

[0030] 100, motor controller; 110, housing assembly; 120, filter assembly; 130, power module assembly; 140, three-phase assembly; 111, housing; 112, cover; 113, filter shielding plate; 114, low-voltage plug-in shielding plate; 121, filter bracket; 122, filter main component; 123, first capacitor assembly; 1221, busbar; 1222, transfer busbar; 1223, first magnetic ring; 1224, second magnetic ring; 1225, third magnetic ring; 1226, discharge resistor; 131 , circuit board; 132, module component; 133, heat sink; 134, second capacitor assembly; 135, current sensor; 141, first three-phase bracket; 142, second three-phase bracket; 143, three-phase copper busbar; 1311, low-voltage plug-in; Q1, filter cavity; Q2, low-voltage cavity; Q3, magnetic ring cavity; C, mounting groove; K1, inflow hole; K2, outflow hole; D, fluid channel; H1, liquid inlet; H2, liquid outlet; S1, electrical input end; S2, electrical output end; S3, head end; S4, tail end. DETAILED DESCRIPTION

[0031] To make the contents of the embodiments of this application clearer, the following description will be made in conjunction with the accompanying drawings. It is understood that the contents mentioned below are only some of the embodiments of this application, and all embodiments are listed in detail. Therefore, without inventive work, other embodiments obtained based on the following embodiments fall within the scope of protection of this application.

[0032] It should be understood that the terms used herein are for the purpose of describing specific embodiments only and are not intended to strictly limit the technical solutions unless the context clearly indicates otherwise. For example, the use of "a," "an," and "the" to modify a feature does not exclude the possibility that the feature may be plural in other embodiments.

[0033] It should be understood that the terms "include," "comprising," and "having" are open-ended, indicating the presence of the stated features but not excluding the possibility of additional features in the embodiment. Similarly, when terms such as first, second, etc. are used herein to describe multiple features, they are merely used to distinguish one feature from another and do not imply a sequence or order unless the context clearly indicates otherwise.

[0034] It should be understood that, unless the context clearly indicates otherwise, the terms "disposed," "connected," and "installed" should be interpreted broadly. For example, they may refer to fixed, detachable, or integral connections; they may be directly connected or indirectly connected through a medium. Those skilled in the art will understand the specific meanings of these terms in the context of the text based on the specific circumstances.

[0035] In addition, for the convenience of description, the text will use terms of spatial relative relationships to illustrate the position of one feature relative to another feature, such as "inside", "outside", "end", "side", "upper", "middle", "lower", "high", "lower", "axial", "circumferential", "radial", "horizontal", "vertical", "first direction", "second direction", etc. It can be understood that the spatial relative relationship between two features should include other specific situations in addition to those shown in the drawings of the specification.

[0036] The embodiments of the present application are described below with reference to the accompanying drawings.

[0037] Reference Figures 1 to 4 The present application proposes a motor controller 100, which includes a box assembly 110, a filter assembly 120, a power module assembly 130 and a three-phase assembly 140; the box assembly 110 includes a box 111, a cover 112 and a filter shielding plate 113, the box 111 and the cover 112 enclose a cavity, the cavity includes a first area, a second area and a third area distributed along the X direction, the filter assembly 120 is located in the first area, the power module assembly 130 is located in the second area, and the three-phase assembly 140 is located in the third area, and the filter assembly 120, the power module assembly 130 and the three-phase assembly 140 are electrically connected in sequence; the first area has a first inner sidewall protruding along the Z direction, the first inner sidewall and the filter shielding plate 113 enclose a filter cavity Q1, and the filter assembly 120 is accommodated in the filter cavity Q1.

[0038] In this application, the filter assembly 120, power module assembly 130, and three-phase assembly 140 are arranged sequentially along the X-axis within the cavity enclosed by the housing 111 and the cover 112. This modular layout offers high integration, small footprint, and easy assembly, facilitating mass production. Furthermore, a localized cavity structure is employed for the filter area, and a filter shielding plate 113 is added to isolate the filter assembly 120 into a separate cavity, effectively cutting off the spatial coupling path of electromagnetic interference.

[0039] In some embodiments, reference Figure 5 and Figure 6, the filter assembly 120 includes a filter bracket 121, a filter main component 122 and a first capacitor assembly 123; the filter bracket 121 is connected to the box body 111, the filter main component 122 and the first capacitor assembly 123 are respectively connected to the two ends of the filter bracket 121 in the Z direction, and the filter main component 122 is electrically connected to the first capacitor assembly 123. In some embodiments, the filter main component 122 includes a busbar copper bar 1221, a transfer copper bar 1222, a first magnetic ring 1223, a second magnetic ring 1224 and a third magnetic ring 1225; the busbar copper bar 1221 passes through the first magnetic ring 1223 and the second magnetic ring 1224 in sequence and is close to the third magnetic ring 1225, and the transfer copper bar 1222 passes through the filter bracket 121 along the Z direction and electrically connects the busbar copper bar 1221 and the first capacitor assembly 123. In some embodiments, refer to Figure 4 The filtering main component 122 further includes a discharge resistor 1226 , which is electrically connected in parallel with the first capacitor component 123 .

[0040] In the above embodiment, the various parts of the filter component 120 are generally stacked in the Z direction, which further realizes the high integration of the structure and improves space utilization; moreover, the filter component 120 effectively reduces the low-frequency differential mode, common mode noise and noise loop through the three-level magnetic ring and the first capacitor component 123, thereby improving the electromagnetic compatibility of the drive motor controller 100.

[0041] Specifically, all three magnetic rings can be runway-shaped magnetic rings, and the filter bracket 121 is provided with corresponding runway-shaped ring grooves for positioning and storing the magnetic rings. In some embodiments, the first magnetic ring 1223 can be a nanocrystalline magnetic ring to inhibit galvanic corrosion; the second magnetic ring 1224 can be a manganese-zinc ferrite magnetic ring to filter low-frequency electromagnetic waves; and the third magnetic ring 1225 can be a nickel-zinc ferrite magnetic ring to filter medium- and high-frequency electromagnetic waves. The three magnetic rings can be distributed along the Y direction, with the first magnetic ring 1223 and the second magnetic ring 1224 oriented in the Y direction, and the third magnetic ring 1225 oriented in the X direction, thereby fully utilizing the lateral space.

[0042] In addition, the first capacitor component 123 can use on-board capacitors. In some embodiments, the first capacitor component 123 integrates two pairs of 10nF Y2 capacitors, two pairs of 220nF Y2 capacitors, and a pair of 2μF X capacitors. In the on-board capacitor design, X capacitors are designed for low-frequency differential mode noise, and a "large and small" Y capacitor solution is designed for common mode noise. The noise loop parasitic parameters are reduced through PCB design.

[0043] In particular, the filter assembly 120 makes full use of the longitudinal space and integrates the capacitor into the filter integrated board, thereby reducing the number of product parts, achieving high integration of controller components, simplifying the controller installation process, and facilitating production line production.

[0044] It should be noted that the filter bracket 121 is provided with a positioning groove, one end of the adapter copper bus 1222 is positioned through the positioning groove and electrically connected to the busbar copper bus 1221, and the other end of the adapter copper bus 1222 passes through the filter bracket 121 and is electrically connected to the first capacitor assembly 123; in addition, the first capacitor assembly 123 is connected in parallel with a discharge resistor 1226, which is used to control the discharge speed of the capacitor and improve the safety and reliability of the circuit.

[0045] In some embodiments, reference Figures 7 to 9 The power module assembly 130 includes a circuit board 131, a module component 132, a heat sink 133, and a second capacitor assembly 134. The circuit board 131, the heat sink 133, and the second capacitor assembly 134 are sequentially connected along the Z direction. The heat sink 133 has a mounting groove C on the side facing the circuit board 131, and the module component 132 is embedded in the mounting groove C. The module component 132 and the second capacitor assembly 134 are electrically connected to the circuit board 131. In some embodiments, the heat sink 133 has multiple mounting grooves C along the Y direction, and the module component 132 has multiple modules. The multiple module components 132 are respectively enclosed with the multiple mounting grooves C to form multiple sealed cavities. Each sealed cavity has an inflow hole K1 and an outflow hole K2 at both ends along the X direction. The heat sink 133 has multiple fluid channels D on the side facing the second capacitor assembly 134. The multiple fluid channels D are filled with a heat dissipation fluid. The heat dissipation fluid in the multiple fluid channels D flows through the multiple sealed cavities through the inflow hole K1 and the outflow hole K2. In some embodiments, multiple fluid channels D are connected in parallel and have a common liquid inlet H1 and liquid outlet H2. The sizes of the inlet holes K1 and outlet holes K2 of each sealed cavity are arranged from large to small according to their distance from the liquid inlet H1. In some embodiments, the circuit board 131 includes a low-voltage plug-in 1311, and the box assembly 110 also includes a low-voltage plug-in shielding plate 114. One end of the second region along the Y direction has a second inner sidewall protruding along the Z direction. The second inner sidewall and the low-voltage plug-in shielding plate 114 enclose a low-pressure cavity Q2, and the low-voltage plug-in 1311 is located in the low-pressure cavity Q2. In some embodiments, the second capacitor assembly 134 has an electrical input terminal S1, which is electrically connected to the filter assembly 120; the circuit board 131 has an electrical output terminal S2, which is electrically connected to the three-phase assembly 140, and the electrical output terminal S2 is provided with a current sensor 135.

[0046] In the above embodiment, the various parts of the power module assembly 130 are generally stacked in the Z direction, which further realizes the high integration of the structure and improves space utilization; moreover, the heat sink 133 is located between the second capacitor assembly 134 and the module element 132, and dissipates heat from the second capacitor assembly 134 and the module element 132 at the same time, thereby improving the heat dissipation efficiency. In addition, the internal water channel structure design of the heat sink 133 satisfies the uniform distribution of flow while ensuring the advantage of low flow resistance in parallel.

[0047] It should be noted that the installation groove C near the liquid inlet H1 generally has less water intake, and the sizes of the inlet holes K1 and the outlet holes K2 of each sealed cavity are set from large to small according to their distance from the liquid inlet H1, thereby optimizing the disadvantage of uneven flow rate of each fluid channel D and increasing the heat dissipation area of ​​the heat sink 133 for the capacitor.

[0048] Specifically, the second capacitor component 134 may be a thin film capacitor, and the side of the heat sink 133 facing the second capacitor component 134 may be covered with a compressible thermal pad to meet the heat dissipation requirements of the thin film capacitor.

[0049] In some embodiments, reference Figure 10 The three-phase component 140 includes a first three-phase bracket 141, a second three-phase bracket 142, a fourth magnetic ring and a three-phase copper busbar 143; the first three-phase bracket 141 and the second three-phase bracket 142 are connected along the Z direction and enclosed to form a magnetic ring cavity Q3, the fourth magnetic ring is located in the magnetic ring cavity Q3, and the three-phase copper busbar 143 is connected to the first three-phase bracket 141 and the second three-phase bracket 142 along the Z direction and passes through the fourth magnetic ring (not shown in the figure).

[0050] In the above embodiment, the fourth magnetic ring can be a nanocrystalline magnetic ring, which effectively suppresses the axial current corrosion of the bearing; in addition, the present application simplifies the steps for workers to install the copper busbar by componentizing the three phases, and improves the installation efficiency of the controller by production line workers. Moreover, the various parts of the three-phase component 140 are generally arranged in a Z-direction stacked arrangement, further realizing a high degree of structural integration and improving space utilization.

[0051] It should be noted that the busbar copper bus 1221 includes a relative head end S3 and a tail end S4. The head end S3 can lead out a line to connect to an external control system, and the tail end S4 can be connected to the electrical input end S1 of the circuit board 131. The electrical output end S2 of the circuit board 131 is then connected to one end of the three-phase copper bus 143, and the other end of the three-phase copper bus 143 is connected to the three-phase motor to realize the passage.

[0052] In summary, the present application designs a highly integrated, modular, high-power motor controller 100, the internal structure of which adopts a modular layout, with the advantages of high integration, simple structural assembly, and easy mass production. Moreover, a local cavity structure design is adopted for the internal filter area, and a filter shielding plate 113 and a low-voltage plug-in shielding plate 114 are added to isolate the filter component 120 and the low-voltage plug-in 1311 into separate cavities, effectively cutting off the spatial coupling path of electromagnetic interference. In addition, the present application also proposes a stacked filter component 120, a power module component 130 and a three-phase component 140, further realizing a highly integrated structure. Among them, the filter component 120 effectively reduces low-frequency differential mode, common mode noise and noise loops through a three-level magnetic ring and a first capacitor component 123, thereby improving the electromagnetic compatibility of the drive motor controller 100. In the power module component 130, the heat sink 133 simultaneously dissipates heat for the second capacitor component 134 and the module element 132, thereby improving the heat dissipation efficiency. Moreover, the internal water channel structure design of the heat sink 133 satisfies the uniform distribution of flow while ensuring the advantage of low flow resistance in parallel.

[0053] The embodiments of the present application only illustrate the structure of the motor controller 100 related to the improvement points of the present application, but it does not mean that it does not have other structures. For example, the motor controller 100 also includes fasteners and / or seals, etc. Other structures will not be described one by one here.

[0054] In particular, the term "and / or" in this application should be understood as follows:

[0055] In the first case, the term “and / or” located between a first subject and a second subject includes any one of the following meanings: (1) only the first subject; (2) only the second subject; and (3) the first subject and the second subject.

[0056] In the second case, the term "and / or" between the last two entities in three or more entities means including at least any one of the entities. For example, "the first entity, the second entity and / or the third entity" has the same meaning as "the first entity and / or the second entity and / or the third entity", specifically including the following combinations: (1) only the first entity; (2) only the second entity; (3) only the third entity; (4) the first entity and the second entity without the third entity; (5) the first entity and the third entity without the second entity; (6) the second entity and the third entity without the first entity; and (7) the first entity, the second entity, and the third entity.

[0057] In addition, although the above content describes the embodiments of the present application in conjunction with the accompanying drawings, those skilled in the art can also make various modifications and variations without departing from the concept of the present application, and such modifications and variations will fall within the scope of protection of the present application.

Claims

1. A motor controller, characterized in that: It includes a box assembly (110), a filter assembly (120), a power module assembly (130) and a three-phase assembly (140); The box assembly (110) comprises a box (111), a cover plate (112) and a filter shielding plate (113); the box (111) and the cover plate (112) enclose a cavity; the cavity comprises a first area, a second area and a third area distributed along the X direction; the filter assembly (120) is located in the first area; the power module assembly (130) is located in the second area; the three-phase assembly (140) is located in the third area; and the filter assembly (120), the power module assembly (130) and the three-phase assembly (140) are electrically connected in sequence; The first area has a first inner side wall protruding along the Z direction, the first inner side wall and the filter shielding plate (113) enclose a filter cavity (Q1), and the filter assembly (120) is accommodated in the filter cavity (Q1).

2. The motor controller according to claim 1, characterized in that: The filter assembly (120) comprises a filter bracket (121), a filter main component (122) and a first capacitor assembly (123); The filter bracket (121) is connected to the box (111), the filter main component (122) and the first capacitor component (123) are respectively connected to the two ends of the filter bracket (121) in the Z direction, and the filter main component (122) is electrically connected to the first capacitor component (123).

3. The motor controller according to claim 2, characterized in that: The filtering main body element (122) comprises a busbar copper bar (1221), a transfer copper bar (1222), a first magnetic ring (1223), a second magnetic ring (1224), and a third magnetic ring (1225); The busbar copper bar (1221) sequentially passes through the first magnetic ring (1223) and the second magnetic ring (1224) and is close to the third magnetic ring (1225); the transfer copper bar (1222) passes through the filter bracket (121) along the Z direction and electrically connects the busbar copper bar (1221) and the first capacitor assembly (123).

4. The motor controller according to claim 3, characterized in that: The filtering main component (122) further includes a discharge resistor (1226), and the discharge resistor (1226) is electrically connected in parallel with the first capacitor component (123).

5. The motor controller according to claim 1, wherein: The power module assembly (130) includes a circuit board (131), a module component (132), a heat sink (133) and a second capacitor assembly (134); The circuit board (131), the heat sink (133) and the second capacitor assembly (134) are connected in sequence along the Z direction; a mounting groove (C) is provided on the side of the heat sink (133) facing the circuit board (131); and the module component (132) is embedded in the mounting groove (C); The module element (132) and the second capacitor assembly (134) are electrically connected to the circuit board (131).

6. The motor controller according to claim 5, characterized in that: The heat dissipation plate (133) is provided with a plurality of the mounting grooves (C) along the Y direction, and the module elements (132) are provided in plurality. The plurality of module elements (132) are respectively enclosed with the plurality of the mounting grooves (C) to form a plurality of sealed cavities, and each of the sealed cavities is provided with an inflow hole (K1) and an outflow hole (K2) at both ends along the X direction; A plurality of fluid channels (D) are provided on the side of the second capacitor assembly (134) facing the heat dissipation plate (133), and the plurality of fluid channels (D) are filled with heat dissipation fluid. The heat dissipation fluid in the plurality of fluid channels (D) flows through the plurality of sealed cavities respectively through the inflow hole (K1) and the outflow hole (K2).

7. The motor controller according to claim 6, characterized in that: The plurality of fluid channels (D) are connected in parallel and have a common liquid inlet (H1) and liquid outlet (H2), and the sizes of the inlet holes (K1) and the outlet holes (K2) of the respective sealed cavities are arranged from large to small according to their distance from the liquid inlet (H1).

8. The motor controller according to claim 5, characterized in that: The circuit board (131) includes a low-voltage plug-in (1311), and the box assembly (110) also includes a low-voltage plug-in shielding plate (114). One end of the second region along the Y direction has a second inner side wall protruding along the Z direction. The second inner side wall and the low-voltage plug-in shielding plate (114) enclose a low-pressure cavity (Q2), and the low-voltage plug-in (1311) is located in the low-pressure cavity (Q2).

9. The motor controller according to claim 5, characterized in that: The second capacitor component (134) is provided with an electrical input terminal (S1), and the electrical input terminal (S1) is electrically connected to the filter component (120); The circuit board (131) is provided with an electrical output end (S2), the electrical output end (S2) is electrically connected to the three-phase component (140), and the electrical output end (S2) is provided with a current sensor (135).

10. The motor controller according to claim 1, wherein: The three-phase assembly (140) includes a first three-phase bracket (141), a second three-phase bracket (142), a fourth magnetic ring and a three-phase copper busbar (143); The first three-phase bracket (141) and the second three-phase bracket (142) are connected along the Z direction and enclose a magnetic ring cavity (Q3); the fourth magnetic ring is located in the magnetic ring cavity (Q3); the three-phase copper busbar (143) is connected to the first three-phase bracket (141) and the second three-phase bracket (142) along the Z direction and passes through the fourth magnetic ring.

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