Inverter brick, motor controller and vehicle

Abstract

The utility model discloses an inversion brick, a motor controller and a vehicle, the inversion brick comprises a three-phase full-bridge module, the arrangement direction of a polarity electrode of a U phase is opposite to that of a polarity electrode of a V phase, and the arrangement direction of the polarity electrode of a W phase is the same as that of the polarity electrode of the V phase; the capacitor positive electrode copper bar and the capacitor negative electrode copper bar are both of a U-shaped structure, the connecting ends of the capacitor positive electrode copper bar and the capacitor negative electrode copper bar are distributed on the two side faces of the corresponding U-shaped structure, the capacitor positive electrode copper bar is embedded in the U-shaped structure of the capacitor negative electrode copper bar, and the three-phase full-bridge module is arranged between the two side faces of the capacitor positive electrode copper bar. In combination with the above arrangement, the three-phase full-bridge module can be directly connected with the capacitor positive electrode copper bar and the capacitor negative electrode copper bar, so that the design of a large-area copper bar is canceled, the parasitic inductance and the parasitic resistance can be reduced, meanwhile, holes do not need to be formed in the large-area copper bar, and the processing and assembling process difficulty of parts is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of the cylinder cover of engine, especially relates to a contravariant brick, 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. The electric drive system includes a drive motor and a motor controller. The motor controller is an integrated circuit that controls the motor to work in the set direction, speed, angle and response time through active work. The inverter brick (also known as inverter) is the core assembly of motor controller power conversion.

[0003] At present, the capacitor module and the power module in the inverter brick are flat, and the connection points (including gate, drain and source) of the middle points of each phase bridge arm of the power module are arranged in the same direction, so that the distance between the negative copper bar of the capacitor output of the capacitor module and the source of the power module or the distance between the positive copper bar of the capacitor output and the drain of the power module is far. The distance between the two is far apart and needs to be connected by a large area of copper bar. Because the copper bar is designed with a large area, the copper bar covers a large area, and during the installation of the inverter brick, multiple holes need to be opened on the copper bar, which makes the installation of the inverter brick difficult.

[0004] Therefore, how to provide an inverter brick to reduce the distance between the copper bar of the capacitor module and the power module, eliminate the design of large area copper bar, and reduce the installation difficulty. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides an inverter brick to reduce the distance between the copper bar of the capacitor module and the power module, eliminate the design of large area copper bar, and reduce the installation difficulty. In addition, the utility model also provides a motor controller and a vehicle with the above inverter brick.

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

[0007] An inverter brick comprises: a three-phase full-bridge module, a polarity electrode of a U phase of the three-phase full-bridge module is arranged in a direction opposite to a polarity electrode of a V phase, the polarity electrode of the U phase is arranged in a same direction as a polarity electrode of a W phase; a capacitor positive copper bar, the capacitor positive copper bar is in a U-shaped structure, first connecting ends for electrical connection of the capacitor positive copper bar are distributed on two side surfaces of the U-shaped structure of the capacitor positive copper bar, and the first connecting ends on two sides of the capacitor positive copper bar have gaps along a connecting direction of the two sides of the capacitor positive copper bar; a capacitor negative copper bar, the capacitor negative copper bar is in a U-shaped structure, second connecting ends for electrical connection of the capacitor negative copper bar are distributed on two side surfaces of the U-shaped structure of the capacitor negative copper bar, and the second connecting ends on two sides of the capacitor negative copper bar have gaps along a connecting direction of the two sides of the capacitor negative copper bar; the capacitor positive copper bar is embedded in the U-shaped structure of the capacitor negative copper bar, and the three-phase full-bridge module is arranged between the two side surfaces of the capacitor positive copper bar.

[0008] Preferably, in the inverter brick, each phase of the three-phase full-bridge module comprises at least two parallel full-bridge structures.

[0009] Preferably, in the inverter brick, the first connecting ends comprise: a U-phase capacitor positive copper bar connected to a drain electrode of a U phase of the three-phase full-bridge module; a V-phase capacitor positive copper bar connected to a drain electrode of a V phase of the three-phase full-bridge module; and a W-phase capacitor positive copper bar connected to a drain electrode of a W phase of the three-phase full-bridge module, the U-phase capacitor positive copper bar and the W-phase capacitor positive copper bar are arranged on a first side plate of the capacitor positive copper bar, and the V-phase capacitor positive copper bar is arranged on a second side plate of the capacitor positive copper bar, the first side plate and the second side plate are opposite sides of the U-shaped structure of the capacitor positive copper bar.

[0010] Preferably, in the inverter brick, a first gap is arranged between the U-phase capacitor positive copper bar and the W-phase capacitor positive copper bar, and the V-phase capacitor positive copper bar is opposite to the first gap.

[0011] Preferably, in the inverter brick, the second connecting ends comprise: a U-phase capacitor negative copper bar connected to a source electrode of a U phase of the three-phase full-bridge module; a V-phase capacitor negative copper bar connected to a source electrode of a V phase of the three-phase full-bridge module; and a W-phase capacitor negative copper bar connected to a source electrode of a W phase of the three-phase full-bridge module, the U-phase capacitor negative copper bar and the W-phase capacitor negative copper bar are arranged on a first side surface of the capacitor negative copper bar, and the V-phase capacitor negative copper bar is arranged on a second side surface of the capacitor negative copper bar, the first side surface and the second side surface are opposite sides of the U-shaped structure of the capacitor negative copper bar.

[0012] Preferably, in the inverter brick, a second gap is arranged between the U-phase capacitor negative copper bar and the W-phase capacitor negative copper bar, and the V-phase capacitor negative copper bar is opposite to the second gap; the first gap is used for accommodating the V-phase capacitor negative copper bar, and the second gap is used for accommodating the V-phase capacitor positive copper bar.

[0013] Preferably, in the inverter brick, the first side surface is attached to the first side plate, and the second side surface is attached to the second side plate.

[0014] Preferably, in the inverter brick, the bottom surface of the capacitor negative copper bar, the capacitor module and the bottom plate of the capacitor positive copper bar are arranged in a stack manner; the bottom surface of the capacitor negative copper bar, the first side surface and the second side surface are connected to form a U-shaped structure of the capacitor negative copper bar; and the bottom plate of the capacitor positive copper bar, the first side plate and the second side plate are connected to form a U-shaped structure of the capacitor positive copper bar.

[0015] A motor controller comprises the inverter brick.

[0016] A vehicle comprises the motor controller.

[0017] The inverter brick disclosed in the embodiment of the utility model, wherein, the polarity electrode of the U-phase of the three-phase full-bridge module is arranged in a direction opposite to the polarity electrode of the V-phase, and arranged in the same direction as the polarity electrode of the W-phase; and the capacitor positive copper bar and the capacitor negative copper bar are both U-shaped structures, the connecting ends of the two are respectively located on the side walls of the U-shaped structures, the capacitor positive copper bar is embedded in the U-shaped structure of the capacitor negative copper bar, and the three-phase full-bridge module is arranged between the two side surfaces of the capacitor positive copper bar, which can realize the direct connection of the three-phase full-bridge module with the capacitor positive copper bar and the capacitor negative copper bar, thereby cancelling the design of the large-area copper bar, which is conducive to reducing the parasitic inductance and parasitic resistance, and at the same time, there is no need to open holes on the large-area copper bar, thereby reducing the difficulty of part machining and assembly process.

[0018] In addition, the arrangement of the inverter brick in the embodiment of the application, the upper and lower layer arrangement structures of the three-phase full-bridge module, the heat dissipation substrate, the cooling water channel and the capacitor module are compact, the space utilization rate is high, the high power density is easy to realize, and the integrated design is convenient.

[0019] Each phase of the three-phase full-bridge module can be provided with at least two parallel full-bridge structures, so as to realize power expansion and meet the platform design requirements of different power levels.

[0020] The side of the capacitor's negative copper busbar is attached to the side plate of the capacitor's positive copper busbar, which results in a large stacked area of ​​the capacitor's output copper busbar, a small parasitic inductance, reduced power loss, and thus improved inverter efficiency.

[0021] The AC copper busbar does not need to pass through other copper busbars. It can be completely fitted to the drain plane of the three-phase full-bridge module, increasing the contact area and thus reducing parasitic resistance, power loss, and the risk of local overheating under high power, ensuring stable operation under high power. Furthermore, because there are no other components obstructing the view, laser welding of the AC copper busbar to the three-phase full-bridge module is simple. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of a partial structure of the inverter brick disclosed in the embodiments of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the three-phase full-bridge module disclosed in the embodiments of this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the positive output copper busbar of the capacitor disclosed in the embodiments of this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the capacitor output negative copper busbar disclosed in the embodiments of this utility model;

[0027] Figure 5 This is an assembly diagram of the capacitor output positive copper busbar and capacitor output negative copper busbar disclosed in the embodiments of this utility model;

[0028] Figure 6 This is a schematic diagram of the inverter brick equipped with an AC output copper busbar disclosed in the embodiments of this utility model;

[0029] Figure 7 for Figure 6 A magnified view of part A in the image. Detailed Implementation

[0030] This utility model discloses an inverter brick that reduces the distance between the copper busbar of the capacitor module and the power module, eliminating the need for a large-area copper busbar design and thus reducing installation difficulty. Furthermore, this utility model also discloses a motor controller and a vehicle incorporating the aforementioned inverter brick.

[0031] 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, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0032] 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 the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more features.

[0033] As shown in Figure 1 The embodiment of the application discloses an inverter brick, which eliminates the design of large-area direct-current copper bars, reduces parasitic inductance and parasitic resistance, and does not need to open holes on the large-area copper bars, thereby reducing the processing and assembly process difficulty of parts.

[0034] Specifically, Figure 1 The inverter brick in the embodiment of the application includes a capacitor positive copper bar 100, a capacitor negative copper bar 200, a three-phase full-bridge module 300, a heat dissipation substrate 400, a cooling water channel 500, and a capacitor module 600.

[0035] It should be noted that only part of the structure of the inverter brick is shown in this paper, and other parts for realizing the function of the inverter brick are not shown, which can be referred to the structure contained in the known inverter brick, and will not be specifically described here.

[0036] The capacitor module 600 includes the capacitor positive copper bar 100 and the capacitor negative copper bar 200, and the capacitor positive copper bar 100 and the capacitor negative copper bar 200 are connected with the three-phase full-bridge module 300.

[0037] The three-phase full-bridge module 300 is installed on the heat dissipation substrate 400, and the heat dissipation substrate 400 is used for dissipating heat of the three-phase full-bridge module 300. The cooling water channel 500 is located between the heat dissipation substrate 400 and the capacitor module 600 along the height direction of the inverter brick. In some embodiments, the three-phase full-bridge module 300, the heat dissipation substrate 400, the cooling water channel 500, and the capacitor module 600 are arranged in sequence along the height direction of the inverter brick.

[0038] The devices of the inverter brick in the embodiment of the application are arranged in a three-dimensional manner, so that the arrangement structure of the upper and lower layers is compact, the space utilization rate is high, high power density is easy to realize, and integrated design is facilitated.

[0039] In some embodiments, the three-phase full-bridge module 300 is a three-phase full-bridge TPAK module, which refers to a power electronic module using a TPAK package. The TPAK package employs a single-switch module design between single-transistor and conventional modules, exceeding the current and power limitations of single-transistor packages while retaining the flexibility of multi-transistor parallel connection. The following... Figure 2 The structure of the three-phase full-bridge module 300 is described.

[0040] like Figure 2 As shown, the three-phase full-bridge module 300 disclosed in this application embodiment includes: U phase 310, V phase 320 and W phase 330.

[0041] In this configuration, phases U10, V20, and W330 are all mounted on the heat sink substrate 400. For example, phases U10, V20, and W330 are arranged side-by-side. Each phase has a gate, a drain, and a source, with the gate and source of each phase arranged on the same side and on a different side from the drain. It should be noted that the gate, drain, and source can be collectively referred to as polarized electrodes.

[0042] In some embodiments, the gate and source of phase U 310 and the gate and source of phase W 330 are oriented in the same direction, and the drain of phase U 310 is oriented in the same direction as the drain of phase W 330. This can be understood as the polarity of phase U 310 being arranged in the same direction as the polarity of phase W 330.

[0043] The polarity electrode arrangement direction of phase U 310 is opposite to that of phase V 320. It can be understood that the gate of phase U 310 and the drain of phase V 320 are arranged on the same side, and the drain of phase U 310 and the gate of phase V 320 are arranged on the same side.

[0044] In some embodiments, each phase of the three-phase full-bridge module 300 includes at least two parallel full-bridge structures; for example, each phase includes three parallel full-bridge structures. Taking phase U 310 as an example, phase U 310 includes a first full-bridge structure 311, a second full-bridge structure 312, and a third full-bridge structure 313, and the first full-bridge structure 311, the second full-bridge structure 312, and the third full-bridge structure 313 are connected in parallel to achieve power expansion of phase U 310.

[0045] In some embodiments, each phase can contain N full-bridge structures to achieve power expansion, depending on the platform design requirements for different power levels. Power expansion can be easily achieved using the parallel connection method described in this application.

[0046] like Figure 3As shown, the capacitor positive copper busbar 100 in this embodiment includes: a U-phase capacitor positive copper busbar 110, a V-phase capacitor positive copper busbar 120, and a W-phase capacitor positive copper busbar 130. It should be noted that the U-phase capacitor positive copper busbar 110, the V-phase capacitor positive copper busbar 120, and the W-phase capacitor positive copper busbar 130 can be the first connection terminals of the capacitor positive copper busbar 100.

[0047] Specifically, the positive copper busbar 110 of the U-phase capacitor is connected to the drain of the U-phase 310 of the three-phase full-bridge module 300, the negative copper busbar 220 of the V-phase capacitor is connected to the drain of the V-phase 320 of the three-phase full-bridge module 300, and the negative copper busbar 230 of the W-phase capacitor is connected to the drain of the W-phase 330 of the three-phase full-bridge module 300. For the connection method and connection position of the positive copper busbar 110 of the U-phase capacitor to the three-phase full-bridge module 300, please refer to the existing known structures.

[0048] Figure 3 The capacitor positive copper busbar 100 is a U-shaped structure, including a base plate, a first side plate, and a second side plate. The first and second side plates are arranged on opposite sides of the base plate. The U-phase capacitor positive copper busbar 110 and the W-phase capacitor positive copper busbar 130 are arranged on the first side plate of the U-shaped structure, and the V-phase capacitor positive copper busbar 120 is arranged on the second side plate of the U-shaped structure. Specifically, the U-phase capacitor positive copper busbar 110 and the W-phase capacitor positive copper busbar 130 extend toward the side plate where the V-phase capacitor positive copper busbar 120 is located, and the V-phase capacitor positive copper busbar 120 extends toward the first side plate.

[0049] The position of the positive copper busbar 120 of the V-phase capacitor is between the positive copper busbar 110 of the U-phase capacitor and the positive copper busbar 130 of the W-phase capacitor. This can be understood as follows: there is a first gap between the positive copper busbar 110 of the U-phase capacitor and the positive copper busbar 130 of the W-phase capacitor, and the positive copper busbar 120 of the V-phase capacitor is opposite to the first gap.

[0050] In some embodiments, the ends of the U-phase capacitor positive copper busbar 110, the V-phase capacitor positive copper busbar 120, and the W-phase capacitor positive copper busbar 130 are all intermittent serrated structures to facilitate welding.

[0051] like Figure 4 As shown, the capacitor negative copper busbar 200 includes: a U-phase capacitor negative copper busbar 210, a V-phase capacitor negative copper busbar 220, and a W-phase capacitor negative copper busbar 230. It should be noted that the U-phase capacitor negative copper busbar 210, the V-phase capacitor negative copper busbar 220, and the W-phase capacitor negative copper busbar 230 can serve as the second connection terminals of the capacitor negative copper busbar 200.

[0052] The negative copper busbar 210 of the U-phase capacitor is connected to the source of the U-phase 310 of the three-phase full-bridge module 300, the negative copper busbar 220 of the V-phase capacitor is connected to the source of the V-phase 320 of the three-phase full-bridge module 300, and the negative copper busbar 230 of the W-phase capacitor is connected to the source of the W-phase 330 of the three-phase full-bridge module 300.

[0053] The capacitor negative copper busbar 200 is U-shaped, including a bottom surface, a first side surface, and a second side surface, wherein the first side surface and the second side surface are arranged on opposite sides of the bottom surface. The U-phase capacitor negative copper busbar 210 and the W-phase capacitor negative copper busbar 230 are arranged on the first side surface of the U-shaped component, and the V-phase capacitor negative copper busbar 220 is arranged on the second side surface of the U-shaped component. Specifically, the U-phase capacitor negative copper busbar 210 and the W-phase capacitor negative copper busbar 230 extend towards the side where the V-phase capacitor negative copper busbar 220 is located, and the V-phase capacitor negative copper busbar 220 extends towards the first side surface.

[0054] The position of the V-phase capacitor negative copper busbar 220 towards the area between the U-phase capacitor negative copper busbar 210 and the W-phase capacitor negative copper busbar 230.

[0055] In some embodiments, the ends of the U-phase capacitor negative copper busbar 210, the V-phase capacitor negative copper busbar 220, and the W-phase capacitor negative copper busbar 230 are all intermittent serrated structures to facilitate welding.

[0056] like Figure 5 As shown, during the connection process between the positive copper busbar 100 and the negative copper busbar 200, the positive copper busbar 100 is embedded within the negative copper busbar 200, and the first side plate of the positive copper busbar 100 is in contact with the second side plate of the negative copper busbar 200, so that the V-phase positive copper busbar 120 is inserted between the U-phase negative copper busbar 210 and the W-phase negative copper busbar 230, and the three are arranged side by side and coplanar; the second side plate of the positive copper busbar 100 is in contact with the first side plate of the negative copper busbar 200, so that the V-phase negative copper busbar 220 is inserted between the U-phase positive copper busbar 110 and the W-phase positive copper busbar 130, and the three are arranged side by side and coplanar.

[0057] The polarity electrode of the U phase 310 of the three-phase full-bridge module 300 and the polarity electrode of the V phase 320 are arranged in opposite directions, and the polarity electrode of the W phase 330 is arranged in the same direction; and the capacitor positive copper bar 100 and the capacitor negative copper bar 200 are both U-shaped structures, the connection ends of the two are located on the side walls of the U-shaped structures, the capacitor positive copper bar 100 is embedded in the U-shaped structure of the capacitor negative copper bar 200, and the three-phase full-bridge module 300 is arranged between the two side surfaces of the capacitor positive copper bar 100, so that the three-phase full-bridge module 300 can be directly connected with the capacitor positive copper bar 100 and the capacitor negative copper bar 200, thereby canceling the design of the large-area copper bar, which is conducive to reducing the parasitic inductance and parasitic resistance, and at the same time, there is no need to open holes on the large-area copper bar, thereby reducing the difficulty of part processing and assembly process.

[0058] The bottom plate of the capacitor positive copper bar 100 and the bottom surface of the capacitor negative copper bar 200 have a gap, the capacitor module 600 is arranged between the bottom plate of the capacitor positive copper bar 100 and the bottom surface of the capacitor negative copper bar 200, and the capacitor positive copper bar 100 is located above the capacitor module 600.

[0059] The bottom surface of the capacitor negative copper bar 200, the capacitor module 600 and the bottom plate of the capacitor positive copper bar 100 are laminated, in addition, the first side plate of the capacitor positive copper bar 100 is attached to the second side surface of the capacitor negative copper bar 200, and the second side plate of the capacitor positive copper bar 100 is attached to the first side surface of the capacitor negative copper bar 200, so that the capacitor positive copper bar 100 and the capacitor negative copper bar 200 have a large area of lamination, which realizes the design of large-area lamination of the capacitor copper bar, reduces the parasitic inductance, reduces the power loss, and thereby improves the efficiency of the inverter brick.

[0060] In combination with the above disclosed content, the inverter brick disclosed in the embodiments of the present application further comprises an alternating current copper bar, and the alternating current copper bar is connected with the three-phase full-bridge module 300.

[0061] As shown in Figure 6 and Figure 7 , the alternating current copper bar disclosed in the embodiments of the present application comprises: a U-phase alternating current copper bar 700, a V-phase alternating current copper bar 800 and a W-phase alternating current copper bar 900.

[0062] Among them, the U-phase alternating current copper bar 700 is connected with the midpoint of the U-phase 310 bridge arm of the three-phase full-bridge module 300, the V-phase alternating current copper bar 800 is connected with the midpoint of the V-phase 320 bridge arm of the three-phase full-bridge module 300, and the W-phase alternating current copper bar 900 is connected with the midpoint of the W-phase 330 bridge arm of the three-phase full-bridge module 300.

[0063] In some embodiments, since the three connection positions of the positive electrode copper bar 100 of the capacitor do not overlap with the three connection positions of the negative electrode copper bar 200 of the capacitor, when the AC copper bar is connected with the three-phase full-bridge module 300, the AC copper bar does not need to pass through other copper bars, so the AC copper bar can be completely attached to the high plane of the drain of the three-phase full-bridge module 300, the contact area is increased, thereby reducing the parasitic resistance, reducing the power loss, reducing the risk of local overheating under high power, and ensuring stable operation under high power. And because there is no other component to block, when laser welding is used for the AC copper bar and the three-phase full-bridge module 300, the operation is simple.

[0064] In addition, a motor controller is protected in the present application, which includes an inverter brick, and the inverter brick is the inverter brick disclosed in the above embodiments, so the motor controller with the inverter brick also has all the technical effects described above.

[0065] In addition, a vehicle is protected in the present application, which includes a motor controller, 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.

[0066] Each of the embodiments in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between each embodiment can be referred to each other.

[0067] 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. An inverter brick, characterized in that, include: In a three-phase full-bridge module, the polarity electrodes of the U phase and the V phase are arranged in opposite directions, while the polarity electrodes of the U phase and the W phase are arranged in the same direction. A capacitor positive copper busbar, wherein the capacitor positive copper busbar has a U-shaped structure, and the first connection end for electrical connection of the capacitor positive copper busbar is distributed on two sides of the U-shaped structure of the capacitor positive copper busbar, and the first connection end on both sides of the capacitor positive copper busbar has a gap along the direction of the line connecting the two sides of the capacitor positive copper busbar. A capacitor negative electrode copper busbar, wherein the capacitor negative electrode copper busbar has a U-shaped structure, and the second connection terminals for electrical connection of the capacitor negative electrode copper busbar are distributed on two sides of the U-shaped structure of the capacitor negative electrode copper busbar, and the second connection terminals on both sides of the capacitor negative electrode copper busbar have a gap along the direction of the line connecting the two sides of the capacitor negative electrode copper busbar. The positive copper busbar of the capacitor is embedded inside the U-shaped structure of the negative copper busbar of the capacitor, and the three-phase full-bridge module is arranged between the two sides of the positive copper busbar of the capacitor.

2. The inverter brick according to claim 1, characterized in that, Each phase of the three-phase full-bridge module includes at least two parallel full-bridge structures.

3. The inverter brick according to claim 2, characterized in that, The first connection end includes: The positive copper busbar of the U-phase capacitor is connected to the drain of the U-phase of the three-phase full-bridge module. The positive copper busbar of the V-phase capacitor is connected to the drain of the V-phase of the three-phase full-bridge module. The W-phase capacitor positive copper busbar is connected to the drain of the W-phase of the three-phase full-bridge module. The U-phase capacitor positive copper busbar and the W-phase capacitor positive copper busbar are arranged on the first side plate of the capacitor positive copper busbar. The V-phase capacitor positive copper busbar is located on the second side plate of the capacitor positive copper busbar. The first side plate and the second side plate are opposite sides of the U-shaped structure of the capacitor positive copper busbar.

4. The inverter brick according to claim 3, characterized in that, There is a first gap between the positive copper busbar of the U-phase capacitor and the positive copper busbar of the W-phase capacitor, and the positive copper busbar of the V-phase capacitor is opposite to the first gap.

5. The inverter brick according to claim 4, characterized in that, The second connection end includes: The negative copper busbar of the U-phase capacitor is connected to the source of the U-phase of the three-phase full-bridge module. The negative copper busbar of the V-phase capacitor is connected to the source of the V-phase of the three-phase full-bridge module. The W-phase capacitor negative copper busbar is connected to the source of the W phase of the three-phase full-bridge module. The U-phase capacitor negative copper busbar and the W-phase capacitor negative copper busbar are arranged on the first side of the capacitor negative copper busbar. The V-phase capacitor negative copper busbar is located on the second side of the capacitor negative copper busbar. The first side and the second side are opposite sides of the U-shaped structure of the capacitor negative copper busbar.

6. The inverter brick according to claim 5, characterized in that, There is a second gap between the U-phase capacitor negative copper busbar and the W-phase capacitor negative copper busbar, and the V-phase capacitor negative copper busbar is opposite to the second gap; The first gap is used to accommodate the negative copper busbar of the V-phase capacitor, and the second gap is used to accommodate the positive copper busbar of the V-phase capacitor.

7. The inverter brick according to claim 5, characterized in that, The first side panel is attached to the second side panel, and the second side panel is attached to the first side panel.

8. The inverter brick according to claim 5, characterized in that, The bottom surface of the capacitor negative copper busbar, the capacitor module, and the base plate of the capacitor positive copper busbar are stacked together. The bottom surface, the first side surface, and the second side surface of the capacitor negative electrode copper busbar are connected to form a U-shaped structure of the capacitor negative electrode copper busbar; The base plate, the first side plate, and the second side plate of the capacitor positive electrode copper busbar are connected to form a U-shaped structure of the capacitor positive electrode copper busbar.

9. A motor controller, comprising an inverter brick, characterized in that, The inverter brick is the inverter brick as described in any one of claims 1 to 8.

10. A vehicle, comprising a motor controller, characterized in that, The motor controller is the motor controller as described in claim 9.

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