Motor controller, electric drive assembly and vehicle

Abstract

The utility model provides a motor controller, an electric drive assembly and a vehicle. The motor controller comprises a shell, the shell is provided with an installation cavity and a cooling cavity which are isolated from each other, and the installation cavity at least comprises a first installation cavity and a second installation cavity which are sequentially arranged in the first direction; the power module is arranged on the first mounting cavity; the capacitor module is arranged in the second mounting cavity and is electrically connected with the power module; wherein the cooling cavity and the second mounting cavity are adjacently arranged along the first direction, the cooling cavity is used for accommodating cooling liquid for cooling the capacitor module, and the first direction is the width direction of the shell. The motor controller provided by the utility model can reduce the occupied installation space of a vehicle.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, and in particular to a motor controller, an electric drive assembly and a vehicle. Background Art

[0002] As people's awareness of environmental protection increases, electric vehicles are rapidly gaining market recognition and popularity due to their environmentally friendly features, low energy consumption, and high efficiency. As the core drive component of electric vehicles, the motor is precisely controlled by the motor controller to achieve starting, stopping, and other related operations.

[0003] In the prior art, motor controllers primarily include various power devices. To dissipate heat from these devices, corresponding cooling structures are typically installed. However, this cooling structure increases the size of the motor controller, further increasing the vehicle installation space occupied by the motor controller. Utility Model Content

[0004] In view of this, the present invention aims to provide a motor controller, an electric drive assembly and a vehicle, in order to solve the problem that the existing motor controller occupies a large installation space in the vehicle.

[0005] To achieve the above object, the technical solution of the present invention is as follows: a motor controller is provided, comprising:

[0006] A housing, wherein the housing is provided with an installation cavity and a cooling cavity isolated from each other, wherein the installation cavity includes at least a first installation cavity and a second installation cavity sequentially arranged along a first direction;

[0007] A power module is arranged on the first mounting cavity;

[0008] and a capacitor module, the capacitor module being disposed in the second mounting cavity and electrically connected to the power module;

[0009] The cooling cavity and the second installation cavity are adjacently arranged along the first direction, the cooling cavity is used to accommodate cooling liquid for cooling the capacitor module, and the first direction is the width direction of the shell.

[0010] Furthermore, the second installation cavity is formed by side walls, and the side walls include a first side wall and a second side wall spaced apart along the first direction; wherein the first side wall is an outer side wall of the shell, the second side wall is an inner side wall of the shell, and the cooling cavity is in contact with the second side wall.

[0011] Further, the capacitor module comprises a capacitor body, a first conductive part and a second conductive part, the first conductive part and the second conductive part are electrically connected with the capacitor body, and the first conductive part and the second conductive part are in contact with the cavity wall of the cooling cavity.

[0012] Further, the first conductive part and the second conductive part are arranged away from each other along a second direction, wherein the second direction is the thickness direction of the shell.

[0013] Further, the motor controller further comprises a filter module, the filter module is electrically connected with the capacitor module, the mounting cavity further comprises a third mounting cavity, the third mounting cavity is arranged in sequence with the second mounting cavity along the first direction, and the third mounting cavity is arranged in sequence with the first mounting cavity along a third direction, and the filter module is arranged in the third mounting cavity, wherein the third direction is the length direction of the shell.

[0014] Further, the cooling cavity is arranged opposite to the third mounting cavity, and the cooling cavity is used for containing cooling liquid for cooling the filter module.

[0015] Further, the cooling cavity comprises a drainage cavity, the drainage cavity is located on the side of the cooling cavity close to the power module, the cooling cavity is communicated with the drainage cavity, and the drainage cavity is communicated with the cooling structure of the power module.

[0016] Further, at least one baffle is arranged in the cooling cavity, and a gap exists between the baffle and the cavity of the cooling cavity, and the baffle divides the cooling cavity into at least two flow channels.

[0017] Compared with the prior art, the motor controller has the following advantages:

[0018] In the embodiment of the utility model, the capacitor module is arranged in the second mounting cavity, and the cooling cavity and the second mounting cavity are arranged adjacent to each other along the first direction. In this way, by arranging the cooling cavity and the mounting cavity of the capacitor module adjacent to each other along the width direction of the shell, compared with the prior art structure in which the cooling cavity and the mounting cavity are arranged opposite to each other along the height direction of the shell, the size of the motor controller along the height direction is reduced, and thus the installation space of the vehicle along the height direction occupied by the motor controller is reduced.

[0019] Another purpose of the utility model is to provide an electric drive assembly to solve the problem that the installation space of the vehicle occupied by the motor controller in the prior art electric drive assembly is large.

[0020] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0021] An electric drive assembly comprises the motor controller.

[0022] The advantages of the electric drive assembly and the motor controller described above over the prior art are the same and will not be described in detail here.

[0023] Another object of the present invention is to provide a vehicle that solves the problem that the electric drive assembly in existing vehicles occupies a large installation space in the vehicle.

[0024] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0025] A vehicle comprises: the electric drive assembly described above.

[0026] The advantages of the vehicle and the above-mentioned electric drive assembly over the prior art are the same and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 A top view of the motor controller according to an embodiment of the present utility model;

[0029] Figure 2 This is a bottom view of the motor controller according to an embodiment of the present utility model;

[0030] Figure 3 This is a side view of the motor controller according to an embodiment of the present utility model;

[0031] Figure 4 for Figure 3 Cross-sectional view along AA direction;

[0032] Figure 5 This is a schematic structural diagram of a capacitor module and a filter module of a motor controller according to an embodiment of the present utility model;

[0033] Figure 6 A top view of the motor controller according to an embodiment of the present invention from another angle;

[0034] Figure 7 for Figure 6 Cross-section along the BB direction;

[0035] Figure 8 for Figure 6 Cross-sectional view along CC direction;

[0036] Figure 9 This is a partial structural diagram of the motor controller described in an embodiment of the present utility model.

[0037] Explanation of reference signs:

[0038] 1 - shell; 10 - mounting cavity; 101 - first mounting cavity; 102 - second mounting cavity; 103 - third mounting cavity; 104 - first side wall; 105 - second side wall; 20 - cooling cavity; 201 - drainage cavity; 2 - power module; 3 - capacitor module; 301 - capacitor body; 302 - first conductive part; 303 - second conductive part; 4 - filter module; 6 - baffle; 7 - water inlet joint; 8 - water outlet joint; X - first direction, Z - second direction; Y - third direction. DETAILED DESCRIPTION

[0039] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0040] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0041] The utility model embodiment provides a kind of motor controller, comprising: shell 1, the shell 1 is equipped with mutually isolated mounting cavity 10 and cooling cavity 20, the mounting cavity 10 at least includes first mounting cavity 101 and second mounting cavity 102 sequentially arranged along the first direction X;Power module 2, is arranged on the first mounting cavity 101;And capacitor module 3, the capacitor module 3 is arranged in the second mounting cavity 102, and is electrically connected with the power module 2;Wherein, the cooling cavity 20 and the second mounting cavity 102 are sequentially arranged along the first direction X, the cooling cavity 20 is used to accommodate cooling liquid for cooling the capacitor module 3, the first direction X is the length direction of the shell 1.

[0042] Specifically, Figure 1 The utility model embodiment shows the top view of motor controller; Figure 2 The utility model embodiment shows the bottom view of motor controller; Figure 3 The utility model embodiment shows the side view of motor controller; Figure 4 The utility model embodiment shows Figure 3 The cross section along A-A direction. As Figures 1-4 Shown, define the width direction of shell 1 as the first direction X, the thickness direction of shell 1 as the second direction Z;The length direction of shell 1 is third direction Y.

[0043] The housing 1 has a mounting cavity 10 and a cooling cavity 20. The mounting cavity includes at least a first mounting cavity 101 and a second mounting cavity 102 arranged along a first direction X. The power module 2 is fixedly mounted in the first mounting cavity 101. The shape of the first mounting cavity 101 is adapted to the shape of the power module 2. The power module 2 specifically refers to an insulated gate bipolar transistor module (IGBT module). Furthermore, the power module 2 is fixed to the first mounting cavity 101 by a plurality of bolt fasteners, so that the power module 2 can be firmly mounted in the first mounting cavity 101.

[0044] The capacitor module 3 is fixedly disposed in the second mounting cavity 102, and the shape of the second mounting cavity 102 is adapted to the shape of the capacitor module 3. Furthermore, the capacitor module 3 can be potted in the second mounting cavity 102, and the outer shell of the capacitor module 3 can be removed and directly potted in the second mounting cavity 102. On the one hand, since the outer shell of the capacitor module 3 is removed, the arrangement of the capacitor module 3 can be made more compact, reducing the size of the motor controller. On the other hand, it can also save the injection mold for the capacitor module 3, reducing the overall cost.

[0045] The capacitor module 3 is electrically connected to the IGBT module; the IGBT module can convert direct current into alternating current by turning itself off and on, so as to transmit the alternating current to the motor. The capacitor module 3 can reduce the peak voltage generated when the IGBT module is turned off, so that the bus voltage remains relatively smooth under the action of the IGBT module switch, thereby ensuring the normal operation of the IGBT module.

[0046] As motor power increases, higher-power motors require greater current to drive, increasing the current flowing through the IGBT module. This results in a larger ripple current during switching, which in turn generates internal heat within capacitor module 3. Cooling chamber 20 is used to hold coolant. The coolant flowing within cooling chamber 20 removes heat from capacitor module 3, reducing its temperature.

[0047] In the motor controller provided by the embodiment of the present utility model, the capacitor module 3 is disposed within the second mounting cavity 102, and the cooling cavity 20 is disposed adjacent to the second mounting cavity 102 along the first direction X. Thus, by arranging the cooling cavity 20 and the mounting cavity of the capacitor module 3 adjacent to each other along the width direction of the housing 1, the height dimension of the motor controller is reduced compared to the prior art structure in which the cooling cavity 20 and the mounting cavity are disposed opposite each other along the height direction of the housing 1, thereby reducing the installation space of the motor controller occupied by the motor controller along the height direction of the vehicle.

[0048] Further, the second mounting cavity 102 is formed by a side wall, the side wall comprises a first side wall 104 and a second side wall 105 which are arranged at intervals along the first direction X; wherein the first side wall 104 is an outer side wall of the shell 1, the second side wall 105 is an inner side wall of the shell 1, and the cooling cavity 20 is in contact with the second side wall 105.

[0049] As shown in Figure 4 , the first side wall 104 is an outer side wall of the shell 1 along the first direction X, and the second side wall 105 is an inner side wall arranged inside the shell 1 between the first mounting cavity 101 and the cooling cavity 20, and the capacitor module 3 is arranged between the first side wall 104 and the second side wall 105. In the embodiment of the application, by contacting the cooling cavity 20 with the second side wall 105 arranged on the inner side of the first direction X, compared with arranging the cooling cavity 20 on both sides of the capacitor module 3, the cooling cavity 20 is directly attached to the inner side wall of the second mounting cavity 102, further reducing the size of the motor controller in the width direction, minimizing the distance between the cooling cavity 20 and the capacitor module 3. And by directly contacting the cooling cavity 20 with the second side wall 105, heat can be efficiently transferred from the capacitor module 3 to the cooling liquid in the cooling cavity 20 body, which can improve the heat dissipation efficiency of the capacitor module 3 and prolong the service life of the capacitor module 3. Further, the shell 1 is a metal piece, and the thermal conductivity of the metal piece is large, so the capacitor module 3 can also be cooled by contacting the shell 1.

[0050] In some embodiments, the capacitor module 3 comprises a capacitor body 301, a first conductive part 302 and a second conductive part 303, the first conductive part 302 and the second conductive part 303 are electrically connected with the capacitor body 301, and the first conductive part 302 and the second conductive part 303 are in contact with the cavity wall of the cooling cavity 20.

[0051] Referring to Figure 5 , a structure diagram of the capacitor module 3 and the filter module 4 of the motor controller is shown, referring to Figure 6 , Figure 6 , another angle top view of the motor controller is shown; referring to Figure 7 , Figure 7 , a sectional view along the B-B direction in Figure 6 is shown; referring to Figure 8 , Figure 8 , a sectional view along the C-C direction in Figure 6 is shown; as Figure 5-Figure 7Specifically, the capacitor body 301, first conductive portion 302, and second conductive portion 303 are all disposed within the second mounting cavity 102. The first conductive portion 302 is defined as the positive conductive portion, and the second conductive portion 303 is defined as the negative conductive portion. The first conductive portion 302 and the second conductive portion 303 are respectively in contact with the positive and negative conductive portions of the IGBT module, thereby achieving electrical connection between the capacitor body 301 and the IGBT module. Furthermore, the positive conductive portion is a positive copper busbar, and the second conductive portion 303 is a negative copper busbar.

[0052] In actual application, by directly contacting the first conductive part 302 and the second conductive part 303 with the cavity wall of the cooling cavity 20, the heat generated by the capacitor body 301 can be more efficiently transferred to the coolant. This direct contact method reduces the thermal resistance on the heat transfer path and improves the heat dissipation efficiency. In addition, by contacting the first conductive part 302 and the second conductive part 303 with the cavity wall of the cooling cavity 20, compared with the method in the prior art that requires the conductive part to extend out of the installation cavity of the capacitor module 3 for heat dissipation, the method of directly dissipating the first conductive part 302 and the second conductive part 303 with the cavity wall of the cooling cavity 20 can reduce the amount of conductive parts on the capacitor module 3 and reduce the cost of the motor controller.

[0053] Furthermore, the first conductive portion 302 and the second conductive portion 303 are arranged to be apart from each other along a second direction Z, wherein the second direction Z is a thickness direction of the housing 1 .

[0054] Specifically, such as Figure 5 As shown, the first conductive part 302 and the second conductive part 303 are arranged on the capacitor body 301, away from each other along the second direction Z, the first conductive part 302 is arranged above along the second direction Z, and the first conductive part 303 is arranged below along the second direction Z. By arranging the conductive parts along the thickness direction of the shell 1, the internal space of the shell 1 can be effectively utilized, and the size of the motor controller in the width and length directions can be reduced, which makes the entire device more compact and more suitable for installation in an environment with limited space.

[0055] like Figure 7 and Figure 8 As shown, both the first conductive portion 302 and the second conductive portion 303 include a horizontal conductive portion extending along a first direction X and a vertical conductive portion extending along a second direction Z. The horizontal conductive portions are disposed at the top and bottom of the capacitor body 301 along the second direction Z, while the vertical conductive portions contact the walls of the cooling cavity 20 to dissipate heat. In practical applications, by disposing the conductive portions along the thickness direction, the conductive portions increase the surface area in contact with the walls of the cooling cavity 20, thereby further improving heat transfer efficiency. A larger heat dissipation area helps transfer heat to the coolant more quickly, reducing the operating temperature of the capacitor module 3.

[0056] It should be noted that since the shell 1 can be a metal piece, when the shell 1 is a metal piece, an insulating piece is arranged between the first conductive part 302 and the second conductive part 303 and between the first conductive part 302 and the second conductive part 303 and the cavity wall respectively. The insulating piece can be an insulating paper.

[0057] Further, the motor controller further comprises a filter module 4, the filter module 4 is electrically connected with the capacitor module 3, the mounting cavity further comprises a third mounting cavity 103, the third mounting cavity 103 is sequentially arranged with the second mounting cavity 102 along the first direction X, and the third mounting cavity 103 is sequentially arranged with the first mounting cavity 101 along a third direction Y, the filter module 4 is arranged in the third mounting cavity 103, wherein the third direction Y is the length direction of the shell 1.

[0058] As shown in Figures 1-8 , one end of the capacitor module 3 is electrically connected with the IGBT module, and the other end is electrically connected with the filter module 4, the input end of the filter module 4 is electrically connected with the direct current input connector, providing direct current for the motor controller, and the filter module 4 is used for filtering the direct current.

[0059] The filter module 4 is fixedly arranged in the third mounting cavity 103, further, the filter module 4 can also be filled in the third mounting cavity 103, and the beneficial effects thereof are similar to those of filling the capacitor module 3 in the second mounting cavity 102, which will not be repeated here.

[0060] Referring to Figure 1 , in actual application, the first mounting cavity 101 and the second mounting cavity 102 are sequentially arranged along the first direction X, and the third mounting cavity 103 and the second mounting cavity 102 are sequentially arranged along the third direction Y. Compared with the method of sequentially arranging the first mounting cavity 101, the second mounting cavity 102 and the third mounting cavity 103 along the height direction in the prior art, the size of the motor controller along the height direction can be further reduced, so that the height space occupied by the motor controller in the vehicle is further reduced.

[0061] Further, the cooling cavity 20 is further arranged opposite to the third mounting cavity 103, and the cooling cavity 20 is further used for containing cooling liquid for cooling the filter module 4.

[0062] As shown in Figure 1 and Figure 4As shown, specifically, the cooling cavity 20 is also arranged relative to the third mounting cavity 103 in the height direction of the housing 1, and the heat of the filter module 4 can also be removed through the cooling cavity 20. In the embodiment of the present application, by providing a cooling cavity 20, heat can be dissipated from both the capacitor module 3 and the filter module 4, thereby reducing the cost of the motor controller. Moreover, since the cooling cavity 20 is arranged along the first direction X, the height dimension of the motor module can be further reduced compared to the cooling cavity 20 of the filter module 4 arranged along the height direction in the prior art.

[0063] Furthermore, the cooling chamber 20 includes a drainage chamber 201 , which is located on a side of the cooling chamber 20 close to the power module 2 . The cooling chamber 20 is connected to the drainage chamber 201 , and the drainage chamber 201 is connected to the cooling structure of the power module 2 .

[0064] Reference Figure 9 , Figure 9 A schematic diagram of the structure of a motor controller described in an embodiment of the present invention is shown. Specifically, the drainage chamber 201 is arranged on the side of the cooling chamber 20 close to the IGBT module. The drainage chamber 201 extends along the thickness direction of the shell 1, that is, the second direction Z. Since the IGBT module is a high-heat-generating device, a cooling structure for dissipating heat for the IGBT module is also provided in the first installation chamber 101. The cooling structure can carry away the heat dissipated by the IGBT module through the flow of coolant to dissipate heat for the IGBT module. The setting of the cooling structure can be in any form, and the embodiment of the present application is not limited to this. In actual application, by providing the drainage chamber 201, the coolant can flow to the cooling structure of the power module 2, thereby more effectively carrying away the heat generated by the power module 2 and extending the service life of the power module 2. In addition, the design of the drainage chamber 201 can make the cooling system more compact, make full use of the space inside the shell 1, and reduce unnecessary gaps and redundant space.

[0065] It should be noted that the above-mentioned coolant can be any liquid that can be used for cooling, such as water, and the embodiments of the present application do not make specific limitations on this.

[0066] like Figures 1-9 As shown, a water inlet connector 7 is provided on the shell 1 corresponding to the cooling chamber 20, and the water inlet connector 7 is communicated with the cooling chamber 20. The water inlet connector 7 is provided on the side close to the filter module 4. A water outlet connector 8 is provided on the shell 1 corresponding to the cooling structure of the power module 2. The water outlet connector 8 is communicated with the cooling structure of the power module 2. The coolant enters from the water inlet connector 7, flows through the cooling chamber 20, enters the cooling structure of the power module 2 through the drainage chamber 201, and then flows out from the water outlet connector 8 to take away the heat of the filter module 4, the capacitor module 3 and the power module 2.

[0067] Furthermore, at least one baffle 6 is provided in the cooling cavity 20 , and a gap exists between the baffle 6 and the cavity body of the cooling cavity 20 . The baffle 6 divides the cooling cavity 20 into at least two flow channels.

[0068] Specifically, at least one baffle is provided in the cooling chamber 20. A baffle 6 can be horizontally arranged in the cooling chamber 20 along the length of the shell 1, and a gap is formed between the baffle 6 and the chamber wall. The cooling chamber 20 can be divided into two flow channels by the baffle 6. Furthermore, multiple baffles 6 can be provided. Multiple baffles 6 can be vertically arranged in the cooling chamber 20 along the width of the shell 1. Two adjacent baffles 6 are parallel. Each baffle 6 forms a gap with the chamber wall. However, the gaps formed between each baffle 6 and the cooling chamber 20 are staggered. The distribution of the multiple baffles 6 can divide the cooling chamber 20 into serpentine flow channels. In this embodiment, by providing a baffle 6 in the cooling chamber 20, the presence of the baffle 6 forces the coolant to flow through a narrower channel, thereby increasing the flow rate of the coolant. A higher flow rate helps to improve heat transfer efficiency, and the formation of turbulence also helps to better remove heat. Through the design of multiple flow channels, the coolant can be more evenly distributed in the cooling chamber 20, ensuring that each part can be effectively cooled and improving heat dissipation efficiency.

[0069] Compared with the prior art, the motor controller described in the present invention has the following advantages:

[0070] In the embodiment of the present invention, the capacitor module 3 is disposed within the second mounting cavity 102, and the cooling cavity 20 is disposed adjacent to the second mounting cavity 102 along the first direction X. Thus, by arranging the cooling cavity 20 and the mounting cavity of the capacitor module 3 adjacent to each other along the width direction of the housing 1, the height dimension of the motor controller is reduced compared to the existing structure in which the cooling cavity 20 and the mounting cavity are disposed opposite each other along the height direction of the housing 1, thereby reducing the installation space of the motor controller in the vehicle along the height direction.

[0071] The specific structure and working principle of the motor controller have been described in detail in the above embodiments and will not be repeated here.

[0072] Another object of the present invention is to provide an electric drive assembly to solve the problem that the motor controller in the existing electric drive assembly occupies a large installation space in the vehicle, including the motor controller described above.

[0073] The motor controller in the electric drive assembly provided by the embodiment of the application is adjacent to the cooling cavity 20 and the mounting cavity of the capacitor module 3 in the length direction of the shell 1, compared with the prior structure that the cooling cavity 20 and the mounting cavity are oppositely arranged in the height direction of the shell 1, the size of the motor controller in the height direction is reduced, and then the mounting space of the vehicle occupied by the motor controller in the height direction is reduced.

[0074] Still another purpose of the utility model lies in providing a vehicle to solve the problem that the mounting space of the vehicle occupied by the electric drive assembly in the prior vehicle is large.

[0075] The motor controller in the electric drive assembly provided by the embodiment of the application is adjacent to the cooling cavity 20 and the mounting cavity of the capacitor module 3 in the length direction of the shell 1, compared with the prior structure that the cooling cavity 20 and the mounting cavity are oppositely arranged in the height direction of the shell 1, the size of the motor controller in the height direction is reduced, and then the mounting space of the vehicle occupied by the motor controller in the height direction is reduced.

[0076] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A motor controller, characterized in that: include: A housing (1), the housing (1) being provided with a mounting cavity (10) and a cooling cavity (20) that are isolated from each other, the mounting cavity (10) comprising at least a first mounting cavity (101) and a second mounting cavity (102) that are sequentially arranged along a first direction (X); A power module (2) is arranged on the first mounting cavity (101); and a capacitor module (3), the capacitor module (3) being arranged in the second mounting cavity (102) and electrically connected to the power module (2); The cooling cavity (20) and the second mounting cavity (102) are arranged adjacent to each other along the first direction (X), the cooling cavity (20) is used to accommodate cooling liquid for cooling the capacitor module (3), and the first direction (X) is the width direction of the housing (1).

2. The motor controller according to claim 1, characterized in that: The second installation cavity (102) is formed by enclosing side walls, and the side walls include a first side wall (104) and a second side wall (105) spaced apart along the first direction (X); wherein the first side wall (104) is an outer side wall of the shell (1), the second side wall (105) is an inner side wall of the shell (1), and the cooling cavity (20) is in contact with the second side wall (105).

3. The motor controller according to claim 1, wherein: The capacitor module (3) comprises a capacitor body (301), a first conductive part (302) and a second conductive part (303), wherein the first conductive part (302) and the second conductive part (303) are electrically connected to the capacitor body (301), and the first conductive part (302) and the second conductive part (303) are in contact with the cavity wall of the cooling cavity (20).

4. The motor controller according to claim 3, characterized in that: The first conductive portion (302) and the second conductive portion (303) are arranged in a direction opposite to each other along a second direction (Z), wherein the second direction (Z) is the thickness direction of the shell (1).

5. The motor controller according to claim 1, wherein: The motor controller further comprises a filter module (4), wherein the filter module (4) is electrically connected to the capacitor module (3); the installation cavity (10) further comprises a third installation cavity (103); the third installation cavity (103) and the second installation cavity (102) are sequentially arranged along the first direction (X), and the third installation cavity (103) and the first installation cavity (101) are sequentially arranged along a third direction (Y); the filter module (4) is arranged in the third installation cavity (103), wherein the third direction (Y) is the length direction of the housing (1).

6. The motor controller according to claim 5, characterized in that: The cooling cavity (20) is also arranged opposite to the third installation cavity (103), and the cooling cavity (20) is also used to accommodate cooling liquid for cooling the filter module (4).

7. The motor controller according to claim 1, characterized in that: The cooling cavity (20) comprises a drainage cavity (201), the drainage cavity (201) is located on a side of the cooling cavity (20) close to the power module (2), the cooling cavity (20) is communicated with the drainage cavity (201), and the drainage cavity (201) is communicated with the cooling structure of the power module (2).

8. The motor controller according to claim 1, wherein: At least one baffle (6) is provided in the cooling cavity (20), a gap exists between the baffle (6) and the cavity body of the cooling cavity (20), and the baffle (6) divides the cooling cavity (20) into at least two flow channels.

9. An electric drive assembly, characterized in that: The motor controller comprises any one of claims 1 to 8.

10. A vehicle, characterized in that: include: The electric drive assembly according to claim 9.

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