Motor controller and vehicle

Abstract

The utility model discloses a motor controller and a vehicle, and the motor controller comprises a housing which is integrated with a heat dissipation system and a capacitor cavity; the capacitor assembly is arranged in the capacitor cavity; the three-phase full-bridge module, the heat dissipation system and the capacitor assembly are arranged in a stacked mode in the height direction of the shell, and the three-phase full-bridge module and the capacitor assembly are both attached to the heat dissipation system. According to the motor controller, the cooling water channel and the capacitor cavity are integrated on the shell of the motor controller, so that the shell integrates a shell function, a heat dissipation function and a capacitor accommodating function, namely, the integrated design of the functions is realized, the number of parts is reduced, the production cost is reduced, and the anti-vibration performance and the reliability of the whole machine are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of motor controller, especially relates to a motor controller and vehicle. BACKGROUND

[0002] The demand of new energy whole vehicle to electric drive system is the core driving force of its technological innovation. Electric drive system includes drive motor and motor controller, and the motor controller is integrated circuit that controls motor to work according to the set direction, speed, angle and response time by active work.

[0003] The volume of traditional motor control system is generally large, internal components are loose, the structure design is low in integration, and the types and quantity of parts are high, resulting in high cost of raw materials, complex process and finally high production cost of the whole machine.

[0004] Therefore, how to provide a motor controller to reduce the number of parts and reduce the cost is a technical problem to be solved by the person skilled in the art. UTILITY MODEL CONTENT

[0005] Therefore, the utility model provides a motor controller to reduce the number of parts and reduce the cost. In addition, the utility model further provides a vehicle with the above motor controller.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] A motor controller comprises:

[0008] A shell is integrated with a heat dissipation system and a capacitor cavity;

[0009] A capacitor assembly is installed in the capacitor cavity;

[0010] A three-phase full-bridge module, the heat dissipation system and the capacitor assembly are arranged in a height direction of the shell, and the three-phase full-bridge module and the capacitor assembly are attached to the heat dissipation system.

[0011] Preferably, the motor controller further comprises a heat dissipation substrate for dissipating heat of the three-phase full-bridge module, and the heat dissipation substrate is welded to the heat dissipation system of the shell.

[0012] Preferably, the motor controller comprises:

[0013] A heat dissipation plate, the three-phase full-bridge module is fixed on the heat dissipation plate, and the heat dissipation plate is welded to the shell;

[0014] A heat dissipation column is fixed to the heat dissipation plate on a side away from the three-phase full-bridge module, and the heat dissipation column faces the heat dissipation system.

[0015] Preferably, in the motor controller, the three-phase full-bridge module is fixed to the heat dissipation plate by a silver sintering process.

[0016] Preferably, in the motor controller, the heat dissipation substrate further comprises a temperature sensor fixed to the heat dissipation plate and used for detecting the temperature of the heat dissipation plate.

[0017] Preferably, in the motor controller, further comprising:

[0018] A positive copper bar and a negative copper bar are welded to the DC side of the three-phase full-bridge module.

[0019] A three-phase AC copper bar is welded to the AC side of the three-phase full-bridge module.

[0020] Preferably, in the motor controller, further comprising: an insulating plate.

[0021] The positive copper bar, the negative copper bar and the three-phase AC copper bar are positioned and installed on the upper surface of the insulating plate in the height direction; and the three-phase full-bridge module is installed on the lower surface of the insulating plate.

[0022] Preferably, in the motor controller, the upper surface of the insulating plate has a pin guide for guiding the pins of the three-phase full-bridge module.

[0023] Preferably, in the motor controller, the three-phase AC copper bar is connected with a three-phase AC output copper bar, the three-phase AC output copper bar is arranged to be bent towards the direction of the motor, and the outer side of the three-phase AC output copper bar is covered with an insulating injection molding part.

[0024] A vehicle comprises a motor controller, wherein the motor controller is any one of the motor controllers described above.

[0025] In the motor controller, the cooling water channel and the capacitor cavity are integrated on the shell of the motor controller, so that the shell has the functions of housing, heat dissipation and accommodating the capacitor, that is, the integration of functions is realized, which is beneficial to reducing parts and production cost, and improving the anti-vibration performance and reliability of the whole machine. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0027] Figure 1 A partial structure schematic view of the motor controller disclosed in the embodiments of the present application is shown in the figure.

[0028] Figure 2 A structure schematic view of the motor controller disclosed in the embodiments of the present application is shown in the figure.

[0029] Figure 3 Another partial structure schematic view of the motor controller disclosed in the embodiments of the present application is shown in the figure.

[0030] Figure 4 A partial structure schematic view of the Figure 3 in the figure.

[0031] Figure 5 A structure schematic view of the shell disclosed in the embodiments of the present application is shown in the figure.

[0032] Figure 6 Another direction structure schematic view of the shell disclosed in the embodiments of the present application is shown in the figure.

[0033] Figure 7 A structure schematic view of the three-phase full-bridge module assembly disclosed in the embodiments of the present application is shown in the figure.

[0034] Figure 8 A structure schematic view of the heat dissipation substrate disclosed in the embodiments of the present application is shown in the figure.

[0035] Figure 9 Another direction structure schematic view of the heat dissipation substrate disclosed in the embodiments of the present application is shown in the figure.

[0036] Figure 10 A structure schematic view of the capacitor module disclosed in the embodiments of the present application is shown in the figure.

[0037] Figure 11 A structure schematic view of the positive copper bar disclosed in the embodiments of the present application is shown in the figure.

[0038] Figure 12 A structure schematic view of the negative copper bar disclosed in the embodiments of the present application is shown in the figure.

[0039] Figure 13 A structure schematic view of the first insulating plate disclosed in the embodiments of the present application is shown in the figure.

[0040] Figure 14 It is a structure diagram of the second insulating plate disclosed in the embodiments of the utility model. DETAILED DESCRIPTION

[0041] The utility model discloses a motor controller to reduce the number of parts, reduce the cost. In addition, the utility model discloses a vehicle with the motor controller.

[0042] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0043] Hereinafter, the terms "first" and "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features.

[0044] As Figures 1 to 4 The motor controller disclosed in the embodiments of the application includes: a shell 100, a positive copper bar 200, a negative copper bar 300, a three-phase full-bridge module assembly 400, a capacitor module 500, a three-phase alternating current copper bar 800, a three-phase alternating current output copper bar 900, a filter 1000, a cover plate 1100 and a PCB plate 1200.

[0045] The shell 100 is the external frame structure of the motor controller, one end of the shell 100 is connected with the cover plate 1100, the other end is connected with the PCB plate 1200, and a box structure is formed between the shell 100, the cover plate 1100 and the PCB plate 1200.

[0046] The positive copper bar 200, the negative copper bar 300, the three-phase full-bridge module assembly 400, the capacitor module 500, the three-phase alternating current copper bar 800, the three-phase alternating current output copper bar 900 and the filter 1000 are all installed in the box structure. For example, the positive copper bar 200, the negative copper bar 300 and the three-phase full-bridge module assembly 400 are located in the same plane, the capacitor module 500 is located on the side of the box structure close to the cover plate 1100, that is, the capacitor module 500 and the positive copper bar 200 are arranged along the height direction of the box structure. The three-phase alternating current copper bar 800 is stacked on the side of the positive copper bar 200 and the negative copper bar 300 close to the PCB plate 1200, that is, arranged along the height direction. The three-phase alternating current output copper bar 900 is a structure bent in the height direction. The filter 1000 is arranged close to the cover plate 1100 and is located in a different cavity from the capacitor module 500.

[0047] Specifically, the negative electrode of the capacitor module 500 is connected with the source of the DC side of the three-phase full-bridge module assembly 400 through the negative electrode copper bar 300, and the positive electrode of the capacitor module 500 is connected with the drain of the DC side of the three-phase full-bridge module assembly 400 through the positive electrode copper bar 200.

[0048] The AC side of the three-phase full-bridge module assembly 400 is connected with the input of the three-phase AC copper bar 800. The three-phase AC copper bar 800 is connected with the three-phase AC output copper bar 900, and the three-phase AC output copper bar 900 is bent and extends outside the box structure through the PCB board 1200, so as to be directly connected with the motor. Specifically, the three-phase AC output copper bar 900 enters the end of the motor and is connected with the three-phase input of the motor, so as to realize end-to-end connection.

[0049] In some embodiments, the three-phase AC output copper bar 900 is packaged with an injection molding structure to realize insulation and fixation of the connection between the three-phase AC output copper bar 900 and the PCB board 1200.

[0050] The filter 1000 is used to be connected with the three-phase AC copper bar 800. The PCB board 1200 is designed as an integrated driving and control of the motor controller.

[0051] The motor controller disclosed in the embodiments of the present application adopts an upper and lower stacked three-dimensional arrangement, which can realize compact arrangement of the structure, improve the space utilization, and is beneficial to reduce the volume.

[0052] In combination with Figure 5 and Figure 6 As shown in the figures, the shell 100 includes a cooling liquid inlet 110, an outer protective shell 120, a cooling water channel 130, a cooling water outlet 140, a capacitor cavity 150, and a filter cavity 160.

[0053] The outer protective shell 120 is the main structure of the shell 100 and serves as the mounting basis of other components. In some embodiments, the shape and size of the outer protective shell 120 can be set according to different needs, which will not be described here. The cooling liquid inlet 110, the cooling water channel 130, and the cooling water outlet 140 are sequentially communicated and are all arranged on the outer protective shell 120, so that the outer protective shell 120 integrates the cooling function.

[0054] The shape, size, and arrangement position of the cooling water channel 130 can be set according to different needs. For example, the cooling water channel 130 is a rectangular groove arranged on the outer protective shell 120, one end of which is communicated with the cooling liquid inlet 110, and the other end is communicated with the cooling water outlet 140. The cooling liquid inlet 110 and the cooling water outlet 140 both penetrate the side wall of the outer protective shell 120, so as to be communicated with the external cooling system.

[0055] In addition, the capacitor cavity 150 and the filter cavity 160 of the outer protective shell 120 are two split cavities in the same plane, and the bottom surface of the capacitor cavity 150 can share the groove bottom of the cooling water channel 130, and the side surface of the filter cavity 160 shares the side surface of the cooling water channel 130, so that the capacitor module 500 in the capacitor cavity 150 can be attached to the cooling water channel 130, and the filter 1000 in the filter cavity 160 is attached to the cooling water channel 130.

[0056] The three-phase full-bridge module assembly 400 in the present application is attached to the upper surface of the cooling water channel 130, and the capacitor module 500 is attached to the lower surface of the cooling water channel 130, so that both surfaces of the cooling water channel 130 can cool other components.

[0057] The three-phase full-bridge module assembly 400, the cooling water channel 130, and the capacitor cavity 150 in the embodiment of the present application are arranged in the height direction of the outer protective shell 120 in sequence, that is, the three-phase full-bridge module assembly 400, the cooling system, and the capacitor module 500 are arranged in a stack, improving the utilization efficiency of the cooling system, simplifying the structure, making the structure compact, and improving the space utilization.

[0058] The outer shell 100 disclosed in the embodiment of the present application integrates the functions of the shell, heat dissipation, and accommodating capacitors, that is, the integrated design of functions, which is beneficial to reducing parts, reducing production costs, and improving the anti-vibration performance and reliability of the whole machine.

[0059] As Figure 7 shown, the three-phase full-bridge module assembly 400 disclosed in the embodiment of the present application includes a three-phase full-bridge module 410 and a heat dissipation substrate 420.

[0060] The three-phase full-bridge module 410 is a core component of the three-phase full-bridge module assembly 400, and is used to connect with the negative copper bar 300, the positive copper bar 200, and the three-phase alternating current copper bar 800. As an example, the three-phase full-bridge module 410 in the present application is a three-phase full-bridge TPAK module, which refers to a power electronic module using TPAK packaging. The TPAK packaging uses a single-switch module design between a single tube and a conventional module, which not only exceeds the output current and power limit of the single tube packaging, but also retains the flexibility of multiple tube parallel connection, and can select appropriate TPAK module parallel connection quantity according to different inverter power output requirements.

[0061] Since the three-phase full-bridge module 410 is the main heat dissipation component required by the motor controller, the three-phase full-bridge module 410 in the present application is fixedly connected with the heat dissipation substrate 420.

[0062] In some embodiments, the heat dissipation substrate 420 includes but is not limited to a plate to increase the heat dissipation area, and the three-phase full-bridge module 410 is attached to the surface of the heat dissipation substrate 420. For example, the heat dissipation substrate 420 includes but is not limited to a copper plate to make the heat dissipation substrate 420 have good thermal conductivity. At the same time, in order to prevent the surface of the copper heat dissipation substrate 420 from being oxidized, the surface of the heat dissipation substrate 420 can be passivated.

[0063] As shown in Figure 8 and Figure 9 , the heat dissipation substrate 420 includes a heat dissipation boss 421, a heat dissipation plate 422, a temperature monitoring hole 423, and a heat dissipation column 424.

[0064] The heat dissipation plate 422 includes but is not limited to a rectangular plate, which is the installation base of the heat dissipation substrate 420. The first side of the heat dissipation plate 422 is provided with the heat dissipation boss 421, and the size and shape of the heat dissipation boss 421 are adapted to the size and shape of the three-phase full-bridge module 410, so as to facilitate the fixation of the three-phase full-bridge module 410 on the heat dissipation boss 421. It can be understood that the heat dissipation boss 421 can position the three-phase full-bridge module 410 and increase the attachment area with the three-phase full-bridge module 410, thereby increasing the heat dissipation area.

[0065] The connection mode of the three-phase full-bridge module 410 and the heat dissipation boss 421 includes but is not limited to clamping. For example, the three-phase full-bridge module 410 is fixed in the corresponding position of the heat dissipation boss 421 by silver sintering process, realizing the fixed connection of the three-phase full-bridge module 410 and the heat dissipation boss 421. It should be noted that in order to improve the silver sintering strength, the heat dissipation boss 421 needs to be silver plated.

[0066] The second side of the heat dissipation plate 422 is provided with the heat dissipation column 424, and the heat dissipation column 424 is arranged uniformly on the surface of the heat dissipation plate 422. It should be noted that the first side and the second side of the heat dissipation plate 422 are opposite, and are the largest surfaces of the heat dissipation plate 422. The heat dissipation column 424 extends into the cooling water channel 130, and exchanges heat with the heat dissipation column 424 by using the heat dissipation medium in the cooling water channel 130, realizing the heat exchange of the three-phase full-bridge module 410.

[0067] In some embodiments, the cross section of the heat dissipation column 424 includes but is not limited to an oval shape, and can also be a circular shape. Optionally, the heat dissipation columns 424 on the heat dissipation plate 422 are arranged in a staggered manner, for example, the heat dissipation columns 424 on the heat dissipation plate 422 are arranged in a staggered manner along the length and width directions of the heat dissipation plate 422, so as to increase the heat dissipation area while reducing the flow resistance of the cooling liquid. Optionally, the direction of the oval of the heat dissipation column 424 can be different, by adjusting the direction of the oval, the flow can be disturbed, which is more conducive to achieving uniform flow of the cooling liquid. In other optional embodiments, the length of the heat dissipation column 424 is not limited to be equal, and according to the cooling liquid flow and heat dissipation requirements of different parts, the length can be designed to be inconsistent, so as to accurately dissipate heat according to the distribution of the three-phase full-bridge module 410 and improve the heat dissipation efficiency. Specifically, the density of the heat dissipation column 424 at the position opposite to the three-phase full-bridge module 410 can be larger, and the length of the heat dissipation column 424 can be longer.

[0068] The heat dissipation substrate 420 in the embodiment of the present application can further increase the contact area between the heat dissipation plate 422 and the cooling liquid in the cooling water channel 130, that is, improve the heat dissipation area, thereby facilitating to improve the heat dissipation effect of the three-phase full-bridge module 410 and ensuring the stable operation of the three-phase full-bridge module 410.

[0069] The three-phase full-bridge module 410 in the embodiment of the present application dissipates heat by extending the heat dissipation column 424 into the cooling water channel 130, and the capacitor module 500 dissipates heat by being attached to the cooling water channel 130. The heat dissipation methods of the two are different, which improves the heat dissipation effect of the three-phase full-bridge module 410 while reducing the production cost.

[0070] The temperature monitoring hole 423 is formed on the heat dissipation plate 422, for example, the first side of the heat dissipation plate 422 is provided with the temperature monitoring hole 423. The temperature monitoring hole 423 is used to install a temperature sensor to monitor the temperature of the surface of the heat dissipation plate 422 in real time, so as to evaluate the heat dissipation effect of the heat dissipation substrate 420 and ensure the safe operation of the motor controller.

[0071] In optional embodiments, the temperature monitoring hole 423 includes but is not limited to four, and is uniformly arranged on the heat dissipation plate 422.

[0072] In some embodiments, the heat dissipation plate 422 of the three-phase full-bridge module assembly 400 is connected with the cooling water channel 130 by using a brazing process. By using integrated welding, the fastening and sealing elements such as bolts and sealing rings can be cancelled, which is conducive to reducing the number of parts, saving structure arrangement space and improving sealing reliability.

[0073] The three-phase full-bridge module 410 disclosed in the embodiment of the present application is cooled by the heat dissipation substrate 420 disclosed in the above embodiments, which is conducive to improving the heat dissipation effect and ensuring the safe operation of the motor controller.

[0074] As shown in Figure 10 , the capacitor module 500 includes a DC output negative copper bar 510, a DC output positive copper bar 520, a DC input negative copper bar 530, and a DC input positive copper bar 540.

[0075] The DC output negative copper bar 510 is connected to the source of the three-phase full-bridge module 410 through the negative copper bar 300. The DC output positive copper bar 520 is connected to the drain of the three-phase full-bridge module 410 through the positive copper bar 200.

[0076] The DC input negative copper bar 530 and the DC input positive copper bar 540 are connected to the filter 1000.

[0077] In some embodiments, the DC output negative copper bar 510 and the DC output positive copper bar 520 are designed on the same side in a laminated manner. The output copper bar adopts a large-area laminated design, which can reduce the parasitic inductance. The current is output upward through the bending of the current output copper bar, so as to facilitate the connection with the motor.

[0078] As shown in Figure 11 , the positive copper bar 200 includes a first capacitor connection end 210, a temperature monitoring through hole 220, and a first power module connection end 230.

[0079] The first capacitor connection end 210 is used to connect with the DC output positive copper bar 520, and the first power module connection end 230 is used to connect with the three-phase full-bridge module 410.

[0080] In some embodiments, the first capacitor connection end 210 and the first power module connection end 230 are both in an equal-interval segmented structure, which facilitates the laser welding to realize the connection of the first capacitor connection end 210 with the DC output positive copper bar 520 and the connection of the first power module connection end 230 with the three-phase full-bridge module 410.

[0081] The temperature monitoring through hole 220 is used to install a temperature sensor to monitor the temperature of the surface of the positive copper bar 200 in real time, so as to evaluate the temperature of the surface of the positive copper bar 200 and ensure the safe operation of the motor controller.

[0082] As shown in Figure 12 , the negative copper bar 300 includes a second capacitor connection end 310 and a second power module connection end 320.

[0083] The second capacitor connection end 310 is used to connect with the DC output negative copper bar 510, and the second power module connection end 320 is used to connect with the three-phase full-bridge module 410.

[0084] In some embodiments, the ends of the second capacitor connection terminal 310 and the second power module connection terminal 320 are both equally spaced segmented structures. This segmented design facilitates laser welding of the second capacitor connection terminal 310 to the DC output negative copper busbar 510, and laser welding of the second power module connection terminal 320 to the three-phase full-bridge module 410.

[0085] In this embodiment, the positive copper busbar 200 and the negative copper busbar 300 are connected to the capacitor module 500 and the three-phase full-bridge module 410 by laser welding, respectively, without the use of bolts. This effectively reduces the number of parts, lowers the cost of parts procurement and overall assembly, and improves vibration resistance and reliability.

[0086] Combination Figure 1 and Figure 3 As shown, based on the above technical solution, in order to achieve insulation installation between the positive copper busbar 200, the negative copper busbar 300, and the three-phase AC copper busbar 800, the motor controller in some embodiments further includes an insulating plate. For example, the insulating plate includes a first insulating plate 600 and a second insulating plate 700.

[0087] Both the first insulating plate 600 and the second insulating plate 700 are made of insulating materials. For example, the first insulating plate 600 and the second insulating plate 700 may be made of plastic materials, including but not limited to plastic materials.

[0088] The positive electrode copper busbar 200 is mounted on the upper surface of the first insulating plate 600 along its height direction, and the three-phase AC copper busbar 800 is mounted on the upper surface of the second insulating plate 700 along its height direction. For example, the positive electrode copper busbar is positioned and mounted on the first insulating plate 600 by means of locating pins and bosses; the three-phase AC copper busbar 800 is positioned and mounted on the second insulating plate 700 by means of locating pins and bosses. By positioning the positive electrode copper busbar 200 and the three-phase AC copper busbar 800, deviations can be prevented during welding connections, ensuring accurate welding positions.

[0089] The first insulating plate 600 and the second insulating plate 700 are overlapped and mounted on the outer protective shell 120.

[0090] The three-phase full-bridge module assembly 400 is mounted on the lower surface of the first insulating plate 600 and the lower surface of the second insulating plate 700, and the three-phase full-bridge module 410 is close to the first insulating plate 600 and the second insulating plate 700.

[0091] The copper busbar and the three-phase full-bridge module 410 are stacked along the height direction through the first insulating plate 600 and the second insulating plate 700.

[0092] likeFigure 13 and Figure 14 As shown in the figure, the surface of the insulation plate has a pin guide, specifically, the upper surface of the first insulation plate 600 has a first pin guide 610, and the upper surface of the second insulation plate 700 has a second pin guide 710.

[0093] The signal terminal pin (gate electrode) of the three-phase full-bridge module 410 passes through the first insulation plate 600 and the second insulation plate 700 through the first pin guide 610 and the second pin guide 710, so as to facilitate the signal terminal pin of the three-phase full-bridge module 410 to be plugged with the PCB board. It can be understood that the first pin guide 610 and the second pin guide 710 guide the passing of the signal terminal pin of the three-phase full-bridge module 410.

[0094] In some embodiments, the first pin guide 610 and the second pin guide 710 have the same structure, and the first pin guide 610 and the second pin guide 710 are both trapezoidal through holes with inner surfaces penetrating through the corresponding insulation plate, and the port part of the trapezoidal through hole has a large size and a smooth chamfer structure. By setting the chamfer and setting the port part to a large size, the signal terminal pin of the three-phase full-bridge module 410 is inserted.

[0095] It should be noted that the specific shape and size of the first insulation plate 600 and the second insulation plate 700 can be set according to different needs, and are within the protection scope.

[0096] The motor controller structure disclosed in the embodiments of the present application is compact, which is conducive to improving the space utilization rate, thereby realizing high power density and facilitating integrated design.

[0097] In addition, a vehicle including the motor controller is protected in the present application, and the motor controller is the motor controller disclosed in the above embodiments, so the vehicle with the motor controller also has all the technical effects described above.

[0098] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to each other.

[0099] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application should not be limited to the embodiments shown herein, but should be consistent with the widest scope of principles and novel features disclosed herein.

Claims

1. A motor controller, characterized in that, include: The housing integrates a heat dissipation system and a capacitor cavity; A capacitor assembly, wherein the capacitor assembly is installed within the capacitor cavity; The three-phase full-bridge module, the heat dissipation system, and the capacitor assembly are stacked along the height direction of the housing, and the three-phase full-bridge module and the capacitor assembly are both in contact with the heat dissipation system.

2. The motor controller according to claim 1, characterized in that, It also includes a heat dissipation substrate for dissipating heat from the three-phase full-bridge module, the heat dissipation substrate being welded to the heat dissipation system of the housing.

3. The motor controller according to claim 2, characterized in that, The heat dissipation substrate includes: A heat sink is provided, and the three-phase full-bridge module is fixed on the heat sink. The heat sink is welded to the outer casing. A heat dissipation column is fixed to the side of the heat dissipation plate away from the three-phase full-bridge module, and the heat dissipation column faces the heat dissipation system.

4. The motor controller according to claim 3, characterized in that, The three-phase full-bridge module is fixed to the heat sink using a silver sintering process.

5. The motor controller according to claim 3, characterized in that, The heat dissipation substrate also includes a temperature sensor fixed to the heat dissipation plate and used to detect the temperature of the heat dissipation plate.

6. The motor controller according to any one of claims 1 to 5, characterized in that, Also includes: Positive and negative copper busbars are provided, and both the positive and negative copper busbars are welded to the DC side of the three-phase full-bridge module. The three-phase AC copper busbar is welded to the AC side of the three-phase full-bridge module.

7. The motor controller according to claim 6, characterized in that, Also includes: Insulating board; The positive copper busbar, the negative copper busbar, and the three-phase AC copper busbar are all positioned and installed on the upper surface of the insulating plate along the height direction; the three-phase full-bridge module is installed on the lower surface of the insulating plate.

8. The motor controller according to claim 7, characterized in that, The upper surface of the insulating plate has pin guides for guiding the pins of the three-phase full-bridge module.

9. The motor controller according to claim 6, characterized in that, The three-phase AC copper busbar is connected to the three-phase AC output copper busbar. The three-phase AC output copper busbar is bent towards the direction of the motor and is covered with an insulating injection molded part on the outside.

10. A vehicle, comprising a motor controller, characterized in that, The motor controller is the motor controller as described in any one of claims 1 to 9.

Images