Electrical connection assembly of a power module, power module and motor controller

Abstract

The embodiment of the application provides a kind of power module electric connection component, power module and motor controller, belong to power electronics technical field.The electric connection component of the power module includes first electric conductor and second electric conductor, and at least two connecting parts and at least one accommodating part are included on the first electric conductor, the accommodating part is located between two adjacent connecting parts, the accommodating part is recessed towards the direction away from the connecting part, one end of each connecting part is used to be electrically connected with the power chip of power module, and the other end of the connecting part is used to be electrically connected with one of the positive electrode connecting end and the negative electrode connecting end of direct current power supply part;Second electric conductor is arranged on the accommodating part, and the second electric conductor is insulated from the accommodating part, one end of the second electric conductor is used to be electrically connected with the power chip, and the other end of the second electric conductor is used to be electrically connected with the other of the positive electrode connecting end and the negative electrode connecting end.The electric connection component of the power module of the application, by arranging the second electric conductor on the accommodating part, is conducive to reducing parasitic inductance.

Description

Technical Field

[0001] This application relates to the field of power electronics technology, and in particular to an electrical connection component for a power module, a power module, and a motor controller. Background Technology

[0002] The motor controller is the core control unit of a motor system. Its function is to precisely regulate the motor's operating parameters, such as speed, torque, and direction, based on external commands. Motor controllers are widely used in industrial automation, new energy vehicles, and rail transportation. A motor controller mainly consists of three parts: a control circuit, a drive circuit, and a power circuit. The power module is the core component of the power circuit, and its performance directly affects the effectiveness of the drive circuit.

[0003] The electrical connection components in a power module include positive and negative conductive plates, which connect the power battery and the power chip. This allows the DC power from the power battery to be input into the power chip, converted into AC power, and then input to the motor. Currently, most power modules use a flat, integrated design for the conductive plates, where a flat negative conductive plate is stacked vertically next to a flat positive conductive plate. However, this stacked arrangement of positive and negative conductive plates generates significant parasitic inductance in the circuit.

[0004] Large parasitic inductance can increase voltage stress, leading to overvoltage breakdown and threatening device safety. Furthermore, it can cause significant switching losses, reducing system energy conversion efficiency. Additionally, large parasitic inductance can generate severe electromagnetic interference, affecting the performance of the power module. Utility Model Content

[0005] This application provides an electrical connection component for a power module, a power module, and a motor controller to solve the problem caused by the large parasitic inductance generated by the electrical connection component.

[0006] In a first aspect, this application provides an electrical connection component for a power module, comprising:

[0007] A first conductor includes at least two connecting portions and at least one receiving portion. The receiving portion is located between two adjacent connecting portions and is recessed in a direction away from the connecting portions. One end of each connecting portion is used for electrical connection with the power chip of the power module, and the other end of the connecting portion is used for electrical connection with one of the positive and negative terminals of the DC power supply.

[0008] The second conductor is disposed on the receiving portion and is insulated from the receiving portion. One end of the second conductor is used to be electrically connected to the power chip, and the other end of the second conductor is used to be electrically connected to the other of the positive terminal and the negative terminal.

[0009] In some possible implementations, the receiving portion is at least one of the following: U-shaped, U-like, V-shaped, W-shaped, or Ω-shaped.

[0010] In some possible implementations, the receiving portion is provided with at least two second conductors, with adjacent second conductors spaced apart.

[0011] In some possible implementations, the receiving portion includes a support section and two connecting sections, the two connecting sections being disposed on both sides of the support section and correspondingly connected to two adjacent connecting portions, the second conductor being disposed on the support section and insulated from the support section.

[0012] In some possible implementations, a partition is provided on the support segment, the partition being used to space two adjacent second conductors.

[0013] In some possible implementations, the second conductor has a groove located within the receiving portion and matching the shape of the receiving portion.

[0014] In some possible implementations, both the first conductor and the second conductor are disposed on the insulating frame of the power module;

[0015] The second conductor and the receiving portion are located on the same side of the insulating frame to be insulated by the insulating frame, and both ends of the connecting portion and the second conductor extend outside the insulating frame.

[0016] In some possible implementations, the second conductor at least partially overlaps with the projection of each of the connecting portions along the length direction of the first conductor.

[0017] Secondly, this application provides a power module, including a power chip and an electrical connection component of the power module as described above, which is electrically connected to the power chip.

[0018] Thirdly, this application provides a motor controller, including a controller body and a power module as described above that is electrically connected to the controller body.

[0019] The power module electrical connection component, power module, and motor controller provided in this application are electrically connected to the DC power supply unit's connection terminals of different polarities via a first conductor's connection portion and a second conductor, respectively. The second conductor is disposed on a recessed receiving portion on the first conductor, thereby reducing the total magnetic flux after the connection portion and the second conductor cancel each other out. The inductance decreases as the magnetic flux decreases, achieving the effect of reducing parasitic inductance. This helps to avoid the increase of voltage stress, switching losses, and electromagnetic interference, and thus helps to ensure the performance of the power module. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0021] Figure 1 This is a schematic diagram showing the connection between the electrical connection components in the power module and the insulating frame and electrical connectors in the power module in the embodiments of this application;

[0022] Figure 2 for Figure 1 Schematic diagram of the structure of the power connection assembly;

[0023] Figure 3 for Figure 2 Top view of the power connection assembly;

[0024] Figure 4 for Figure 3 A cross-sectional view of the electrical connection assembly at point AA in the first embodiment;

[0025] Figure 5 for Figure 4 A schematic diagram of a structure with a partition on the middle support section;

[0026] Figure 6 for Figure 3 A cross-sectional view of the electrical connection assembly at point AA in the second embodiment;

[0027] Figure 7 for Figure 2 A schematic diagram of the structure of the first conductor in the middle from one perspective;

[0028] Figure 8 for Figure 2 A schematic diagram of the structure of the first conductor in the middle from another perspective;

[0029] Figure 9 for Figure 2 A schematic diagram of the structure of the second conductor in the middle;

[0030] Figure 10 for Figure 2 Left view of the electrical connection assembly.

[0031] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments.

[0032] Explanation of reference numerals in the attached figures

[0033] 100: Electrical connection assembly; 200: Insulating frame; 300: Electrical connector;

[0034] 1: First conductor; 11: Connecting part; 111: First body; 112: First connecting piece; 113: First pin; 114: First protrusion; 12: Receiving part; 121: Supporting section; 1211: Separating part; 122: Connecting section;

[0035] 2: Second conductor; 21: Second body; 22: Second connecting piece; 23: Second pin; 24: Second protrusion; 25: Groove;

[0036] 201: Installation space.

[0037] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0041] The terms “first,” “second,” “third,” “fourth,” etc., used in this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0042] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0043] In the prior art, the performance of the power module in the motor controller is affected by the electrical connection assembly 100. The electrical connection assembly 100 includes a positive conductive plate and a negative conductive plate, wherein the positive copper busbar is used to form an electrical connection between the positive terminal of the DC power supply unit and the power chip, and the negative copper busbar is used to form an electrical connection between the negative terminal of the DC power supply unit and the power chip.

[0044] Because the currents in the positive and negative conductive plates flow in opposite directions, the magnetic fluxes they generate are also opposite. Traditionally, the positive and negative conductive plates are typically flat, plate-like structures stacked one on top of the other. This results in high static magnetic flux generated by both plates, poor flux cancellation, and consequently, a large parasitic inductance.

[0045] Large parasitic inductance not only increases voltage stress, causing overvoltage breakdown in power chips and threatening device safety, but also leads to significant switching losses, reducing system energy conversion efficiency. Furthermore, large parasitic inductance generates severe electromagnetic interference, thus affecting the performance of the power module.

[0046] In view of this, embodiments of this application provide an electrical connection component 100 for a power module, a power module, and a motor controller, which will be described below with reference to the accompanying drawings.

[0047] Reference Figures 1 to 3As shown in the illustration, the electrical connection assembly 100 of the power module provided in this embodiment includes a first conductor 1 and a second conductor 2. The first conductor 1 includes at least two connecting portions 11 and at least one receiving portion 12. The receiving portion 12 is located between two adjacent connecting portions 11 and is recessed in a direction away from the connecting portions 11. One end of each connecting portion 11 is used for electrical connection with the power chip of the power module, and the other end of the connecting portion 11 is used for electrical connection with one of the positive and negative terminals of the DC power supply unit.

[0048] The second conductor 2 is disposed on the receiving portion 12 and is insulated from the receiving portion 12. One end of the second conductor 2 is used to be electrically connected to the power chip, and the other end of the second conductor 2 is used to be electrically connected to the other of the positive terminal and the negative terminal.

[0049] The electrical connection assembly 100 of the power module in this embodiment is electrically connected to the DC power supply unit with different polarity connection terminals via the connection portion 11 of the first conductor 1 and the second conductor 2, respectively. This results in opposite current directions on the connection portion 11 and the second conductor 2, and opposite static magnetic fluxes generated by the connection portion 11 and the second conductor 2. By providing a receiving portion 12 on the first conductor 1 and placing the second conductor 2 on the receiving portion 12, the amount of cancellation between the magnetic fluxes generated by the connection portion 11 and the second conductor 2 is increased, thereby reducing the total magnetic flux after cancellation. The parasitic inductance decreases with the decrease in magnetic flux, achieving the effect of reducing parasitic inductance. This helps to avoid the increase in voltage stress, switching losses, and electromagnetic interference, and thus helps to ensure the performance of the power module.

[0050] In this embodiment, the first conductor 1 and the second conductor 2 can be made of copper, or other materials with conductive properties. For example, they can also be made of copper alloy, aluminum, aluminum alloy, silver, or silver-plated copper. The first conductor 1 and the second conductor 2 can be made of the same material or different materials. In specific implementation, the materials of the first conductor 1 and the second conductor 2 can be determined according to the usage requirements.

[0051] In addition, the connecting part 11 and the second conductor 2 are usually indirectly electrically connected to the positive or negative output terminal of the DC power supply unit through other components. The components used for this electrical connection can refer to the prior art and are not specifically limited here.

[0052] In this embodiment, the DC power supply unit can be, for example, a power battery. When the power module is integrated into the motor controller, the DC power output from the power battery is converted into AC power by the power chip inside the power module and then supplied to the motor to provide power for its operation. This process is widely used in new energy vehicles, electric rail transit, and other fields. Of course, in other application scenarios, the DC power supply unit can also be other products capable of outputting DC power. For example, the DC power supply unit can also be a fuel cell, a solar panel, etc.

[0053] For ease of description, the structure of the electrical connection assembly 100 will be explained below with the example of the connection part 11 being electrically connected to the positive terminal of the DC power supply unit and the second conductor 2 being electrically connected to the negative terminal of the DC power supply unit. In this case, the connection part 11 serves as the P terminal and the second conductor 2 serves as the N terminal. Of course, it is also feasible to connect the connection part 11 to the negative terminal of the DC power supply unit and the second conductor 2 to the positive terminal of the DC power supply unit.

[0054] In some implementations, such as Figure 1 As shown, the first conductor 1 and the second conductor 2 are both disposed on the insulating frame 200 of the power module. The second conductor 2 and the receiving portion 12 are respectively located on the same side of the insulating frame 200 so as to be insulated by the insulating frame 200. The connecting portion 11 and both ends of the second conductor 2 extend outside the insulating frame 200.

[0055] This arrangement not only facilitates the placement and installation of the first conductor 1 and the second conductor 2, but also ensures insulation between them, resulting in better reliability. The insulating frame 200 can be made of an insulating material that possesses insulating properties and meets strength requirements, as is currently available in the technology.

[0056] Reference Figure 1 As shown, three separate mounting spaces 201 are formed within the insulating frame 200 to correspond to the three-phase windings of the motor. Each mounting space 201 contains a copper sheet, and multiple power chips are mounted on the copper sheet. Each mounting space 201 has an electrical connection component 100 on one end of the insulating frame 200. Corresponding to each electrical connection component 100, an electrical connector 300 is provided on the other side of the insulating frame 200, which is arranged one-to-one with the electrical connection component 100.

[0057] The connecting part 11 and the second conductor 2 are specifically electrically connected to the copper sheet, and are also electrically connected to the power chip via the copper sheet. The electrical connector 300 is also electrically connected to the copper sheet. A complete DC-to-AC transmission path is constructed through the electrical connection assembly 100, the copper sheet, the power chip, and the electrical connector 300. The DC power from the DC power supply unit is converted to AC power via the three electrical connection assemblies 100 and the corresponding power chips, and then input to the three-phase windings of the motor. The electrical connection method between the copper sheet and the power chip can refer to existing technologies.

[0058] In some feasible embodiments, the receiving portion 12 is at least one of the following shapes: "U", U-shaped, "V", "W", or "Ω". This arrangement, compared to the prior art where the second conductor 2 is positioned on a straight first conductor 1, allows the second conductor 2 to be positioned as low as possible, which facilitates increasing the overlap of magnetic flux generated by the connecting portion 11 and the second conductor 2, thereby improving the magnetic flux cancellation effect. Furthermore, the shape of the receiving portion 12 also facilitates its forming and the arrangement of the second conductor 2 on it.

[0059] In some embodiments, the receiving portion 12 is provided with at least two second conductors 2, with adjacent second conductors 2 spaced apart. According to the law of electromagnetic induction, when the current direction in each set of connecting portions 11 is opposite to that in the second conductor 2, the magnetic fields generated by the two interact. By providing at least two second conductors 2, multiple sets of cancellation structures can be formed, significantly increasing the magnetic flux overlap area, thereby improving the cancellation effect of magnetic flux and further reducing parasitic inductance. The number of second conductors 2 can be determined according to the usage requirements in specific implementations.

[0060] In the first feasible implementation, such as Figure 4 and Figure 8 As shown in the illustration, the receiving portion 12 in this embodiment includes a support section 121 and two connecting sections 122. The two connecting sections 122 are disposed on both sides of the support section 121 and are connected to two adjacent connecting portions 11. A second conductor 2 is disposed on the support section 121 and is insulated from the support section 121. This structural design of the support section 121 and connecting sections 122 not only makes good use of three-dimensional space, making the internal layout of the power module more compact, but also improves the structural strength of the receiving portion 12.

[0061] The "U" shape of the receiving portion 12 means that the two connecting segments 122 are arranged in parallel, and the two connecting segments 122 are connected to the support segment 121 perpendicularly or by an arc, thus making the receiving portion 12 U-shaped. The "U-shaped" appearance of the receiving portion 12 means that the two connecting segments 122 are not arranged in parallel, but their extension lines intersect. For example, the distance between the two connecting segments 122 gradually decreases or increases in the direction away from the connecting portion 11, and the connection between the two connecting segments 122 and the support segment 121 roughly forms a "U"-shaped structure. Therefore, the receiving portion 12 is "U-shaped" in this case.

[0062] The "Ω" shape of the receiving portion 12 means that the two connecting sections 122 and the supporting section 121 are each arc-shaped, and the three sections 122 and 121 are connected to form the "Ω" shape of the receiving portion 12. Furthermore, the "Ω" shape of the receiving portion 12 allows for a larger area of ​​the second conductor 2 surrounded by the two connecting sections 122 and the supporting section 121, which is beneficial for increasing the overlap area of ​​the magnetic flux generated by the connecting portion 11 and the second conductor 2. From the principle of magnetic field superposition, a larger overlap area means that more magnetic fluxes in opposite directions can cancel each other out, thereby effectively reducing the equivalent inductance of the overall circuit and having a better effect on reducing parasitic inductance. The "Ω" shape of the receiving portion 12 also facilitates a more uniform magnetic field distribution around the second conductor 2, reducing stray inductance in the current circuit and thus helping to ensure power stability.

[0063] In this embodiment, the receiving part 12 may also adopt a combination of two or more shapes from "U", "U-shaped", "V", "W" and "Ω" shapes, as long as the usage requirements are met.

[0064] like Figure 5 As shown, a separator 1211 is provided on the support section 121 to separate two adjacent second conductors 2. This helps to increase the creepage path length between adjacent second conductors 2 and prevent short circuits between the two second conductors 2. Furthermore, the separator 1211 also helps to block the electromagnetic coupling path between adjacent second conductors 2, thereby reducing electromagnetic interference between adjacent second conductors 2.

[0065] Here, the partition 1211 protrudes from the receiving portion 12 to the other side of the support section 121. In addition to being shaped as Figure 5 Besides the "n" shape shown, it can also be in the shape of a "1", as long as it meets the requirements for separation. In addition, the number of second conductors 2 in the receiving part 12 can be adjusted adaptively, in addition to two.

[0066] In a second feasible implementation, such as Figure 6As shown, the second conductor 2 has a groove 25 located within the receiving portion 12 and matching the shape of the receiving portion 12. By providing the groove 25 on the second conductor 2, and by adapting the groove 25 to the shape of the receiving portion 12, the second conductor 2 and the receiving portion 12 can be arranged in a stacked manner, further improving the cancellation effect of magnetic flux between the second conductor 2 and the connecting portion 11, thereby helping to reduce parasitic inductance.

[0067] Specifically, the shape of the groove 25 can be U-shaped, U-shaped, V-shaped, W-shaped or Ω-shaped, depending on the shape of the receiving part 12.

[0068] In this embodiment, when one second conductor 2 is provided in the receiving portion 12, a P-terminal, N-terminal, and P-terminal arrangement is formed. When two second conductors 2 are provided in the receiving portion 12, a P-terminal, N-terminal, and P-terminal arrangement can be formed. Of course, the number of second conductors 2 in the receiving portion 12 can be determined according to the usage requirements.

[0069] In the packaging of the power module, the connecting part 11 and the second conductor 2 are usually connected to the copper busbar or other conductors at the corresponding connecting end on the DC power supply part, and then connected by brazing, laser welding or other methods. The connecting part, the second conductor 2 and the corresponding copper busbar need to be locked by tooling during the connection process, which will generate a certain locking stress. The stress cannot be offset by structural deformation, which poses a potential risk.

[0070] Meanwhile, since the connecting part 11 and the second conductor 2 are integrated structures, higher assembly precision is required when connecting them to the corresponding copper busbar, which is not conducive to actual production and manufacturing. In addition, during vibration testing / temperature shock cycling testing and actual use, the connecting part 11 and the second conductor 2 are also more prone to potential failure risks due to stress issues.

[0071] To solve the above technical problems, such as Figures 7 to 9 As shown, at least one of the connecting portion 11 and the second conductor 2 includes a body, a connecting piece connected to one end of the body, and a pin connected to the other end of the body. The connecting piece is used for electrical connection with a positive or negative terminal, and the pin is used for electrical connection with a power chip. A protrusion is provided at the end of the body connected to the connecting piece, and the protrusion protrudes toward the side opposite to the receiving portion 12. The connecting piece is connected to the body through the protrusion.

[0072] Here, the connection is made by overlapping the copper busbar on the DC power supply unit with the connecting piece. The protrusion helps to reduce the stress generated by tooling fastening, vibration testing, and actual operation, thereby effectively reducing the risk of failure. In addition, by setting the protrusion, while reducing stress, it can also effectively improve the requirements when the power module power connector 300 is connected to the corresponding connecting copper busbar, thus increasing manufacturability.

[0073] For ease of distinction, the body on the connecting part 11 is referred to as the first body 111, the connecting piece on the connecting part 11 is referred to as the first connecting piece 112, the pin on the connecting part 11 is referred to as the first pin 113, and the protrusion on the connecting part 11 is referred to as the first protrusion 114. Similarly, the body on the second conductor 2 is referred to as the second body 21, the connecting piece on the second conductor 2 is referred to as the second connecting piece 22, the pin on the second conductor 2 is referred to as the second pin 23, and the protrusion on the second conductor 2 is referred to as the second protrusion 24. The number of first pins 113 is not limited to... Figure 7 The two shown, the number of second pins 23 is not limited. Figure 9 The number of pins on the three connecting parts 11 and the second conductor 2 shown can be set according to usage requirements.

[0074] In this embodiment, the first protrusion 114 can be integrally formed with the first body 111, and the second protrusion 24 can be integrally formed with the second body 21. Alternatively, the first protrusion 114 can be formed separately from the first body 111 and then connected together, and the second protrusion 24 can be formed separately from the second body 21 and then connected together. Besides being a bent sheet-like structure, the first protrusion 114 and the second protrusion 24 can also be woven into a strip-like structure, as long as the usage requirements are met.

[0075] In practice, the protrusion can be at least one of the following shapes: "n", "Ω", "W", "S", and "V". Of course, the specific shape of the protrusion can be adapted to meet specific usage requirements. Furthermore, it is also feasible to provide protrusions only on the connecting part 11 or the second conductor 2.

[0076] In this embodiment, along the length of the first conductor 1, the projections of the second conductor 2 and each connecting portion 11 at least partially overlap. This facilitates ensuring a reduction in magnetic flux after the connection portion 11 and the second conductor 2 cancel each other out, thereby reducing parasitic inductance as the magnetic flux decreases.

[0077] In some feasible implementations, such as Figure 10As shown, the projections of the second conductor 2 and each connecting portion 11 can be completely overlapped. For ease of description, the side of the second conductor 2 facing away from the receiving portion 12 is referred to as the outer side. At this time, the outer surface of the second body 21 of the second conductor 2 is coplanar with the outer surface of the first body 111 of the connecting portion 11.

[0078] In other feasible embodiments, the projections of the second conductor 2 and each connecting part 11 may only partially overlap. In this case, the outer surface of the second body 21 of the second conductor 2 is not coplanar with the outer surface of the first body 111 of the connecting part 11. However, after the connection part 11 and the second conductor 2 cancel each other out, the magnetic flux can also be reduced, thereby achieving the effect of reducing parasitic inductance.

[0079] The power module in this application embodiment includes a power chip and an electrical connection component 100 of the power module as described above, which is electrically connected to the power chip.

[0080] The power module here, by incorporating a power chip and the aforementioned electrical connection component 100, helps reduce the parasitic inductance on the connection side between the power module and the DC power supply unit, thereby ensuring the performance of the power module.

[0081] The motor controller in this embodiment includes a controller body and a power module as described above that is electrically connected to the controller body.

[0082] The motor controller here, by setting up the power module as described above, helps to reduce parasitic inductance. This helps to ensure that the power module operates according to the expected switching sequence, thereby controlling the magnitude and direction of the motor current, and ultimately achieving regulation of the motor speed, torque and direction.

[0083] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only.

[0084] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope.

Claims

1. An electrical connection assembly of a power module, characterized by include: A first conductor (1) includes at least two connecting portions (11) and at least one receiving portion (12). The receiving portion (12) is located between two adjacent connecting portions (11) and is recessed in a direction away from the connecting portions (11). One end of each connecting portion (11) is used to electrically connect to the power chip of the power module, and the other end of the connecting portion (11) is used to electrically connect to one of the positive terminal and the negative terminal of the DC power supply. The second conductor (2) is disposed on the receiving portion (12) and is insulated from the receiving portion (12). One end of the second conductor (2) is used to be electrically connected to the power chip, and the other end of the second conductor (2) is used to be electrically connected to the other of the positive terminal and the negative terminal.

2. The electrical connection assembly of the power module of claim 1, wherein, The receiving portion (12) is at least one of the following: "U", "U-shaped", "V", "W" or "Ω".

3. The electrical connection assembly of the power module of claim 1, wherein, The receiving portion (12) is provided with at least two second conductors (2), and two adjacent second conductors (2) are spaced apart.

4. The electrical connection assembly of the power module of claim 3, wherein, The receiving portion (12) includes a support section (121) and two connecting sections (122). The two connecting sections (122) are disposed on both sides of the support section (121). The two connecting sections (122) are connected to the two adjacent connecting portions (11) respectively. The second conductor (2) is disposed on the support section (121) and is insulated from the support section (121).

5. The electrical connection assembly of the power module according to claim 4, characterized in that, A partition (1211) is provided on the support section (121), and the partition (1211) is used to separate two adjacent second conductors (2).

6. The electrical connection assembly of the power module of claim 1, wherein, The second conductor (2) has a groove (25) located within the receiving portion (12) and matching the shape of the receiving portion (12).

7. The electrical connection assembly of a power module according to any one of claims 1 to 6, characterized in that The first conductor (1) and the second conductor (2) are both disposed on the insulating frame (200) on the power module; The second conductor (2) and the receiving portion (12) are located on the same side of the insulating frame (200) to be insulated by the insulating frame (200), and both ends of the connecting portion (11) and the second conductor (2) extend outside the insulating frame (200).

8. The electrical connection assembly of the power module according to any one of claims 1 to 6, characterized in that, Along the length of the first conductor (1), the second conductor (2) at least partially overlaps with the projection of each of the connecting portions (11).

9. A power module, characterized in that, It includes a power chip and an electrical connection component of a power module as described in any one of claims 1 to 8, which is electrically connected to the power chip.

10. A motor controller, characterized in that, It includes a controller body and a power module as described in claim 9 that is electrically connected to the controller body.

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