Power module, electrical connection apparatus, motor controller, electronic control assembly, and vehicle

Abstract

The present disclosure relates to a power module, an electrical connection apparatus, a motor controller, an electronic control assembly, and a vehicle. The power module comprises a first connection terminal and a second connection terminal. The first connection terminal comprises a first connection portion and a second connection portion. The first connection portion is arranged along a first direction, the second connection portion is connected to an end portion of the first connection portion along the first direction, the second connection portion is arranged along a second direction, and the first connection portion and the second connection terminal are stacked in the second direction. Thus, the space occupied by the connection terminals of the power module in the second direction can be reduced to a certain extent, and the parasitic inductance generated after connecting the connection terminals is reduced. In addition, the second connection portion of the first connection terminal is arranged along the second direction, such that the space occupied by the connection terminals of the power module in the first direction can be reduced to a certain extent, thereby allowing for a more compact structure of an input end of the power module, and facilitating the installation and layout of the power module and the electrical connection between the power module and other devices.

Description

Power module, electrical connection device, motor controller, electric control assembly and vehicle

[0001] Cross-reference to related applications

[0002] The present application claims priority to the Chinese patent application No. 202411267151.3, filed on September 10, 2024, and entitled "Power module, electrical connection device, motor controller, electric control assembly and vehicle", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of electrical connection, and in particular to a power module, an electrical connection device, a motor controller, an electric control assembly and a vehicle. BACKGROUND

[0004] The power module is a packaging module containing power semiconductor devices of integrated circuits, and is also an independent part including input interfaces, output interfaces and a plurality of signal interfaces. The power module can realize different functions according to different power components packaged therein.

[0005] At present, the connection terminals of the power module are mostly connected by screws. However, the screw connection involves a large number of components and occupies a large space, and the use of screw locking and fixing is easy to generate a large parasitic inductance. In some power modules for HPD packaging, the connection terminals are changed to laser welding form, but due to the design of the standard module plastic frame, the length of the power module connection terminals is long and needs to be staggered, which still cannot effectively reduce the occupied space of the connection terminals and the parasitic inductance generated. SUMMARY

[0006] Therefore, the present application provides a power module, an electrical connection device, an electric control assembly and a vehicle to at least solve the problem that the connection terminals of the power module occupy a large space and are easy to generate a large parasitic inductance after connection in the prior art.

[0007] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0008] The present application provides a power module, comprising a first connection terminal and a second connection terminal; the first connection terminal comprises a first connection part and a second connection part, the first connection part is arranged along a first direction, the second connection part is connected to the end of the first connection part along the first direction, and the second connection part is arranged along a second direction; the first direction intersects the second direction; the first connection part and the second connection terminal are arranged in a stack in the second direction.

[0009] Optionally, the power module further comprises a support; the support is arranged on a side of the first connecting portion away from the second connecting terminal and abuts against a side of the second connecting portion close to the first connecting portion.

[0010] Optionally, the support comprises a body and a supporting portion; the body is arranged along the first direction, and the supporting portion is connected to an end of the body along the first direction; the supporting portion extends away from the second connecting terminal and abuts against a side of the second connecting portion close to the first connecting portion.

[0011] Optionally, the body and the supporting portion are an integral piece; and / or a surface of the supporting portion away from the second connecting portion is an arc surface.

[0012] The application further provides an electrical connection device comprising a capacitor and the power module as described in any one of the preceding items; the capacitor comprises a first electrode terminal and a second electrode terminal, the first electrode terminal and the second electrode terminal are arranged in a stack along the first direction; at least part of the first electrode terminal is connected to the second connecting portion, and the second electrode terminal is connected to the second connecting terminal.

[0013] Optionally, the first electrode terminal comprises a main portion and an end portion; the end portion is electrically connected to the second connecting portion, and a thickness dimension of the end portion along the first direction is smaller than a thickness dimension of the main portion along the first direction.

[0014] Optionally, the electrical connection device further comprises an electrically conductive plate; the electrically conductive plate comprises a first bent portion and a second bent portion; the first bent portion is arranged on a side of the second connecting terminal away from the first connecting terminal, and at least part of the first bent portion is electrically connected to the second connecting terminal; the second bent portion is arranged on a side of the second electrode terminal away from the first electrode terminal, and at least part of the second bent portion is electrically connected to the second electrode terminal.

[0015] Optionally, an opening is arranged at a position where the first bent portion and the second bent portion are connected to each other.

[0016] Optionally, the first electrode terminal is welded to the second connecting portion, the second electrode terminal is welded to the second bent portion, and the second connecting terminal is welded to the first bent portion.

[0017] Optionally, the electrical connection device further comprises a first insulating layer; the first insulating layer is connected to at least part of an inner side of the electrically conductive plate, the inner side of the electrically conductive plate refers to a side of the electrically conductive plate electrically connected to the second connecting terminal and the second electrode terminal.

[0018] Optionally, the electrical connection device further comprises a second insulation layer; the second insulation layer is connected between the first electrode terminal and the second electrode terminal.

[0019] Optionally, the first electrode terminal is at least two, the second connection part is connected with the at least two first electrode terminals; and / or, the second electrode terminal is at least two, the second connection terminal is connected with the at least two second electrode terminals.

[0020] The application further provides an electric machine controller comprising the power module or the electrical connection device according to any one of the preceding.

[0021] The application further provides an electric control assembly comprising the power module or the electrical connection device or the electric machine controller according to any one of the preceding.

[0022] The application further provides a vehicle comprising the electric control assembly or the electric machine controller or the electrical connection device or the power module according to the preceding.

[0023] Compared with the prior art, the power module, the electrical connection device, the electric control assembly, the electric machine controller and the vehicle according to the application have the following advantages:

[0024] The power module according to the application comprises a first connection terminal and a second connection terminal, the first connection terminal comprises a first connection part and a second connection part, the first connection part is arranged along a first direction, the second connection part is connected to an end of the first connection part along the first direction, the second connection part is arranged along a second direction, and the first connection part and the second connection terminal are arranged in a stack in the second direction, so that the space occupied by the connection terminal of the power module in the second direction can be reduced to a certain extent, and the parasitic inductance generated after the connection terminal is connected can be reduced. In addition, the second connection part of the first connection terminal is arranged along the second direction, so that the space occupied by the connection terminal of the power module in the first direction can be reduced to a certain extent, so that the structure of the input end of the power module is more compact, and the installation and layout of the power module and the electrical connection with other devices are more convenient.

[0025] The electrical connection device, the electric control assembly, the electric machine controller and the vehicle according to the application have the same or similar advantages as the power module according to the preceding, and will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, which form a part of the disclosure, are included to provide a further understanding of the application, and are incorporated herein for explanation. The schematic embodiments of the application and their descriptions are used to explain the application, and do not constitute an improper limitation on the application. In the drawings:

[0027] Fig. 1 is a partial cross-sectional view of an electrical connection device according to an embodiment of the application;

[0028] Fig. 2 is an internal side view of an electrical connection device according to an embodiment of the present application;

[0029] Fig. 3 is an external schematic view of an electrical connection device according to an embodiment of the present application.

[0030] BRIEF DESCRIPTION OF DRAWINGS 1 - power module, 11 - first connection terminal, 111 - first connection part, 112 - second connection part, 12 - second connection terminal, 13 - housing, 14 - support member, 141 - body, 142 - support part, 21 - first electrode terminal, 211 - main body part, 212 - end part, 22 - second electrode terminal, 3 - conductive plate, 31 - first bent part, 32 - second bent part, 33 - opening, 4 - first insulating layer, 5 - second insulating layer. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0032] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a particular order or sequence. It should be understood that the data used in this way can be exchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally a class, and are not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0033] It should be understood that "some embodiments" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiments are included in at least one embodiment of the present application. Therefore, "in some embodiments" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0034] A kind of electrical connection device, electric control assembly and vehicle provided by the present application will be described in detail below by listing specific embodiments.

[0035] Referring to FIG. 1, the embodiment of the present application provides a power module, the power module comprising a first connecting terminal 11 and a second connecting terminal 12; the first connecting terminal 11 comprising a first connecting part 111 and a second connecting part 112, the first connecting part 111 being arranged along a first direction X, the second connecting part 112 being connected to an end of the first connecting part 111 along the first direction X, the second connecting part 112 being arranged along a second direction Z; the first direction X intersecting the second direction Z; the first connecting part 111 and the second connecting terminal 12 being arranged in a stack along the second direction Z.

[0036] In the embodiment, the first connecting terminal 11 and the second connecting terminal 12 are arranged at the input end of the power module 1, one of the first connecting terminal 11 and the second connecting terminal 12 is used to realize positive input, and the other is used to realize negative input. The first connecting terminal 11 and the second connecting terminal 12 can be metal plates with good conductive performance, such as copper bars, aluminum bars, etc., which have high conductivity and corrosion resistance, and can effectively meet the electrical connection requirements of the power module.

[0037] The first connecting terminal 11 comprises a first connecting part 111 and a second connecting part 112, the first connecting terminal 11 can adopt a whole metal plate, the first connecting part 111 and the second connecting part 112 belong to two different parts of the first connecting terminal 11, the first connecting part 111 is conductively connected with the circuit inside the capacitor, and the second connecting part 112 is used to electrically connect with the terminal of other equipment. The first connecting part 111 is arranged along the first direction X, and the second connecting part 112 is arranged along the second direction Z. Moreover, the first connecting part 111 and the second connecting terminal 12 are arranged in a stack along the second direction Z, wherein the first direction X intersects the second direction Z, and the angle between the first direction X and the second direction Z can be set according to the shell structure of the input end of the power module, and the specific angle is not limited in the embodiment. In FIG. 1, the first direction X and the second direction Z are perpendicular to each other, wherein "perpendicular" not only includes the case of absolute perpendicular, but also includes the case of approximately perpendicular in the general cognition, such as the state that the included angle between the first direction X and the second direction Z is 89°-91°, which is regarded as the first direction X and the second direction Z being perpendicular to each other.

[0038] The power module further comprises a shell 13, which can be an injection molded plastic shell to ensure good thermal conductivity, temperature resistance, mechanical properties and insulation properties. After the first connecting terminal 11 and the second connecting terminal 12 are fixed in position in the injection mold, molten plastic particles are injected into the mold at high speed and high pressure, and after the product is cooled and solidified, the first connecting terminal 11 and the second connecting terminal 12 are injection molded together. The injection molding material is generally polybutylene terephthalate (PBT) or polyphenyl sulfide (PPS). After the first connecting terminal 11, the second connecting terminal 12 and the plastic are injection molded, the plastic and the connecting terminal surface have sufficient holding force, and there is no need to use other structures such as glue and screws for fixation. It should be noted that the shell of the power module needs to be redesigned in this embodiment to meet the layout requirements of the first connecting terminal 11 and the second connecting terminal 12.

[0039] In the embodiment of the application, the first connecting part 111 of the first connecting terminal 11 and the second connecting terminal 12 are stacked in the second direction Z, which can reduce the space occupied by the connecting terminals of the power module in the second direction Z to a certain extent, and also helps to reduce the parasitic inductance generated after the connecting terminals are connected. The spacing between the first connecting part 111 and the second connecting terminal 12 is determined by the shell structure of the power module input end, and in actual application, the spacing between the first connecting part 111 and the second connecting terminal 12 can be set smaller on the basis of ensuring electrical insulation between the first connecting part 111 and the second connecting terminal 12, so as to further help to reduce the space occupied by the connecting terminals and the parasitic inductance generated. In addition, the second connecting part 112 of the first connecting terminal 11 is arranged along the second direction Z, which can reduce the space occupied by the connecting terminals of the power module in the first direction X to a certain extent, so that the structure of the power module input end is more compact, and the installation and layout of the power module and the electrical connection with other devices are more convenient.

[0040] In addition, since the parasitic inductance generated by laser welding is smaller than that generated by screw fastening, the first connecting terminal 11 and the second connecting terminal 12 are connected to the terminals of other devices by laser welding in the embodiment of the application.

[0041] Optionally, referring to FIG. 1, in some embodiments of the application, the power module further comprises a support 14; the support 14 is arranged on the side of the first connecting part 111 away from the second connecting terminal 12 and abuts against the side of the second connecting part 112 close to the first connecting part 111. The support 14 can be part of the shell 13 and be processed into an integral piece with the shell 13 by an injection molding process, so that the stability of the support 14 can be ensured and the subsequent assembly and connection process of the support 14 and the shell 13 can be omitted. At the same time, the arrangement of the support 14 helps to strengthen the structural rigidity of the shell 13 and improve the load impact resistance of the power module.

[0042] Optionally, referring to FIG. 1, in some embodiments of the present application, the support 14 comprises a body 141 and a support portion 142; the body 141 is arranged along the first direction X, and the support portion 142 is connected to the end of the body 141 along the first direction X and extends away from the second connecting terminal 12 and abuts against the side of the second connecting portion 112 close to the first connecting portion 111. The support portion 142 extends away from the second connecting terminal 12, which can effectively increase the contact area between the support 14 and the second connecting portion 112, so that the support portion 142 can provide effective support for the second connecting portion 112 and further improve the stability of the second connecting portion 112.

[0043] Optionally, in some embodiments of the present application, the support 14 can be a one-piece, and the body 141 and the support portion 142 belong to different parts of the support 14, that is, the body 141 and the support portion 142 are a one-piece. Alternatively, the surface of the support portion 142 away from the second connecting portion 112 is an arc surface, and the arc surface structure can further help to disperse the force when the support portion 142 is subjected to pressure from the second connecting portion 112, thereby avoiding stress concentration and reducing the risk of cracks or damage to the support portion 142.

[0044] Referring to FIGS. 2 and 3, the present application also provides an electrical connection device, which comprises a capacitor and the power module 1 of any one of the preceding embodiments; the capacitor comprises a first electrode terminal 21 and a second electrode terminal 22, and the first electrode terminal 21 and the second electrode terminal 22 are arranged in a stack along the first direction X; at least part of the first electrode terminal 21 is connected to the second connecting portion 112, and the second electrode terminal 22 is connected to the second connecting terminal 12.

[0045] In the present embodiment, the electrical connection device can be a vehicle inverter, which can convert the direct current of a vehicle battery into alternating current to power various power devices. The power module 1 is one of the core components of the vehicle inverter, which is usually composed of an inverter bridge, a filter circuit, a control circuit, an oscillator, etc., and is mainly used to convert direct current into alternating current. The capacitor mainly plays a role in filtering, energy storage, voltage stabilization, etc. in the vehicle inverter, which can block ripple current and eliminate DC bus voltage fluctuations, and has a certain protective effect on the power module 1. The output end of the capacitor is electrically connected to the input end of the power module 1, and the two components work together to enable the vehicle inverter to provide stable and efficient power support for the vehicle.

[0046] The first electrode terminal 21 and the second electrode terminal 22 can be metal plates with good conductivity, such as copper bars, aluminum bars, etc., which have high conductivity and corrosion resistance and can effectively meet the connection requirements of the capacitor and the power module 1.

[0047] The first electrode terminal 21 and the second electrode terminal 22 are both arranged at the output end of the capacitor, one of the first electrode terminal 21 and the second electrode terminal 22 is used to realize the positive output, and the other is used to realize the negative output. Assuming that the first connection terminal 11 of the power module 1 is used to realize the positive input, the second connection terminal 12 is used to realize the negative input, the first electrode terminal 21 of the capacitor is used to realize the positive output, and the second electrode terminal 22 is used to realize the negative output, the first connection terminal 11 is conductively connected with the first electrode terminal 21, and the second connection terminal 12 is conductively connected with the second electrode terminal 22, thereby realizing the connection of the power module 1 and the capacitor. It should be noted that for a certain power module 1, the power chip inside the power module 1 limits the polarity of the first connection terminal 11 and the second connection terminal 12 connected thereto, and since the arrangement of the power chip is usually not adjusted, the electrode properties of the first connection terminal 11 and the second connection terminal 12 of the power module 1 cannot be adjusted.

[0048] The first electrode terminal 21 and the second electrode terminal 22 are both arranged along the second direction Z and are stacked in the first direction X, so that part of the magnetic field between the two electrode terminals can be offset, which helps to reduce the parasitic inductance generated inside the capacitor, and at the same time can effectively reduce the occupied space of the capacitor in the first direction X. At the same time, the second connection part 112 of the first connection terminal 11 is at least partially stacked with the first electrode terminal 21, and the stacking part is conductively connected, so that part of the magnetic field between the first connection terminal 11 and the first electrode terminal 21 can be offset, thereby helping to reduce the parasitic inductance generated by the connection of the power module 1 and the capacitor. In addition, the second connection part 112 and the first electrode terminal 21 are conductively connected in the second direction Z, which helps to reduce the size of the connection part of the power module 1 and the capacitor in the first direction X.

[0049] In the embodiment of the application, the size of the power module, the capacitor and the connection part thereof is reduced, thereby helping to reduce the overall volume of the electrical connection device, and facilitating the installation and layout of the electrical connection device. At the same time, the connection terminal of the power module and the electrode terminal of the capacitor are stacked in more parts and have a larger total stacking area, which is more helpful to reduce the parasitic inductance generated by the connection of the power module and the capacitor, thereby improving the power density of the electrical connection device.

[0050] Optionally, referring to FIG. 1, in some embodiments of the application, the first electrode terminal 21 comprises a main body part 211 and an end part 212; the end part 212 is conductively connected with the second connection part 112, and the thickness dimension of the end part 212 in the first direction X is smaller than the thickness dimension of the main body part 211 in the first direction X.

[0051] In the embodiment, the first electrode terminal 21 can also be a whole metal plate, the main body part 211 and the end part 212 belong to two different parts of the first electrode terminal 21, the main body part 211 is in conductive connection with the circuit inside the capacitor, and the end part 212 is in conductive connection with the second connecting part 112 of the first connecting terminal 11. In order to reduce the parasitic inductance generated by the electrical connection, the end part 212 is welded with the second connecting part 112 of the first connecting terminal 11 in the embodiment, and during the welding process, the end part 212 is pressed down to be flat with the surface of the second connecting part 112, so as to realize the welding of the end part 212 and the second connecting part 112.

[0052] In order to facilitate the pressing down of the end part 212, the thickness dimension of the end part 212 along the first direction X is less than the thickness dimension of the main body part 211 along the first direction X, so that the local part of the first electrode terminal 21 is formed as a flat plate structure, which is more helpful to reduce the pressing force of the end part 212 during the welding process, and is more convenient to realize the welding of the end part 212 and the second connecting part 112. Further, in some embodiments of the application, the part where the main body part 211 and the end part 212 are transitionally connected can be designed as an arc-shaped structure, so as to avoid stress concentration at the part with reduced thickness and cause the fracture of the first electrode terminal 21.

[0053] Optionally, referring to FIG. 1, in some embodiments of the application, the electrical connection device further comprises a conductive plate 3, the conductive plate 3 comprises a first bending part 31 and a second bending part 32; the first bending part 31 is arranged on the side of the second connecting terminal 12 away from the first connecting terminal 11, and at least part of the first bending part 31 is in conductive connection with the second connecting terminal 12; the second bending part 32 is arranged on the side of the second electrode terminal 22 away from the first electrode terminal 21, and at least part of the second bending part 32 is in conductive connection with the second electrode terminal 22.

[0054] In the embodiment, the conductive plate 3 can also be a metal plate with good conductive performance, such as a copper bar or an aluminum bar, and the conductive plate 3 is processed by a bending process to form the first bending part 31 and the second bending part 32, the first bending part 31 is arranged to extend along the first direction X, and the second bending part 32 is arranged to extend along the second direction Z. At least part of the first bending part 31 is arranged in a stack with the second connecting terminal 12 and is in conductive connection, so that part of the magnetic field between the first bending part 31 and the second connecting terminal 12 can be offset, which is helpful to reduce the parasitic inductance generated by the connection of the first bending part 31 and the second connecting terminal 12; at least part of the second bending part 32 is arranged in a stack with the second electrode terminal 22 and is in conductive connection, so that part of the magnetic field between the second bending part 32 and the second electrode terminal 22 can be offset, which is helpful to reduce the parasitic inductance generated by the connection of the second bending part 32 and the second electrode terminal 22.

[0055] In some embodiments of the present application, the conductive plate 3 has a thickness ranging from 0.4 mm to 0.6 mm, so as to improve the deformation ability of the conductive plate 3 and enable the conductive plate 3 to effectively absorb the size transmission cumulative tolerance between the second connecting terminal 12 and the second electrode terminal 22. It should be noted that the smaller the thickness of the conductive plate 3, the smaller the pressing force required for the conductive plate 3 to deform during welding, but correspondingly, the current carrying capacity of the conductive plate 3 will be poor, and therefore the thickness of the conductive plate 3 needs to be determined according to the overcurrent demand and process demand in actual implementation.

[0056] Optionally, in some embodiments of the present application, the first electrode terminal 21 is welded with the second connecting portion 112, the second electrode terminal 22 is welded with the second bending portion 32, and the second connecting terminal 12 is welded with the first bending portion 31. Specifically, the first electrode terminal 21 is in a suspended state, a nominal gap is provided between the first electrode terminal 21 and the second connecting portion 112, and the first electrode terminal 21 needs to be pressed to be flat with the surface of the second connecting portion 112 during laser welding, and then laser welding is performed to form a laser weld as shown in part A of FIG. 2. During the welding of the conductive plate 3 with the second connecting terminal 12 and the second electrode terminal 22, the first bending portion 31 is pressed to be flat with the second connecting terminal 12, and then the first bending portion 31 is welded with the second connecting terminal 12 by laser welding to realize the conductive connection between the conductive plate 3 and the second connecting terminal 12, and the weld formed by welding is shown as part B in FIG. 3. Similarly, the second bending portion 32 is pressed to be flat with the second electrode terminal 22, and then the second bending portion 32 is welded with the second electrode terminal 22 by laser welding to realize the conductive connection between the conductive plate 3 and the second electrode terminal 22, and the weld formed by welding is shown as part C in FIG. 3.

[0057] During the welding of the first bending portion 31 and the second connecting terminal 12, the housing 13 of the power module 1 can provide better support for the second connecting terminal 12, and during the welding of the second bending portion 32 and the second electrode terminal 22, the first electrode terminal 21 can provide better support for the second electrode terminal 22, wherein a second insulating layer 5 is provided between the first electrode terminal 21 and the second electrode terminal 22, and the second insulating layer 5 can be a film made of polypropylene, polyethylene, polyvinyl chloride, polyester, etc., which is connected between the first electrode terminal 21 and the second electrode terminal 22 by hot pressing. The area of the second insulating layer 5 needs to be large enough to fully isolate the electrical contact between the first electrode terminal 21 and the second electrode terminal 22 and avoid short circuiting of the capacitor. Since one side surface of the second insulating layer 5 needs to be connected with the first electrode terminal 21 and the other side surface needs to be connected with the second electrode terminal 22, a double-sided adhesive insulating layer can be selected for one-time hot pressing connection.

[0058] In addition, the welding sequence of the power module 1 and the terminals of the capacitor is as follows: first, the second connecting part 112 of the first connecting terminal 11 and the end part 212 of the first electrode terminal 21 are welded by using the first welding tool, then the second connecting terminal 12 and the first bending part 31 of the conductive plate 3 are welded by using the second welding tool, and finally, the second electrode terminal 22 and the second bending part 32 of the conductive plate 3 are welded by using the third welding tool.

[0059] Based on this, in the electrical connection device, the first connecting part 111 of the first connecting terminal 11 and the second connecting terminal 12 are stacked, the second connecting part 112 of the first connecting terminal 11 and the end part 212 of the first electrode terminal 21 are stacked, the first electrode terminal 21 and the second electrode terminal 22 are stacked, the first bending part 31 of the conductive plate 3 and the second connecting terminal 12 are stacked, and the second bending part 32 of the conductive plate 3 and the second electrode terminal 22 are stacked, thereby forming a full-stacked structure of the power module and the capacitor connection part, which can effectively reduce the space occupied by the power module and the capacitor connection part and reduce the parasitic inductance generated after connection, thereby helping to improve the power density of the electrical connection device.

[0060] Optionally, referring to FIG. 3, in some embodiments of the present application, the part where the first bending part 31 and the second bending part 32 are connected is provided with an opening 33. The part where the first bending part 31 and the second bending part 32 are connected is the part where the conductive plate 3 is bent, and the part is provided with the opening 33. The number of the openings 33 is multiple, the multiple openings 33 are arranged along the length direction of the conductive plate 3, and the openings 33 can be in any shape such as rectangular, circular, rhombic, square, etc. The arrangement of the multiple openings can help to reduce the downward pressure required for welding the first bending part 31 of the conductive plate 3 and the second connecting terminal 12 and the downward pressure required for welding the second bending part 32 and the second electrode terminal 22, help to prevent stress concentration phenomenon at the bending part, and improve the durability of the conductive plate 3.

[0061] Optionally, referring to Fig. 1, in some embodiments of the present application, a first insulating layer 4 is further included; the first insulating layer 4 is connected to at least part of the inner side of the conductive plate 3, which is the side of the conductive plate 3 that is conductively connected to the second connecting terminal 12 and the second electrode terminal 22. The first insulating layer 4 can also be a film made of polypropylene, polyethylene, polyvinyl chloride, polyester, etc., which is connected to the inner side of the conductive plate 3 by hot pressing. Since the first insulating layer 4 only needs to have one side surface connected to the conductive plate 3, the first insulating layer 4 can be an insulating layer with adhesive on one side, so as to control the material cost. It should be noted that the first insulating layer 4 is only connected to part of the surface of the inner side of the conductive plate 3, and the part of the inner side of the conductive plate 3 that needs to be conductively connected to the second connecting terminal 12 and the second electrode terminal 22 is still exposed, so as to ensure that the conductive connection can be smoothly achieved.

[0062] Optionally, referring to Figs. 2 and 3, in some embodiments of the present application, the first electrode terminal 21 is at least two, and the second connecting portion 112 is connected to the at least two first electrode terminals 21; and / or, the second electrode terminal 22 is at least two, and the second connecting terminal 12 is connected to the at least two second electrode terminals 22.

[0063] In this embodiment, when the capacitor is connected to the power module 1, each capacitor needs to be connected to multiple input terminals of the power module 1. For example, the power module 1 in Fig. 2 includes three input terminals. On this basis, the number of the first electrode terminals 21 can be set according to actual needs, and the number of the second electrode terminals 22 can also be set according to actual needs. For example, the capacitor in Fig. 2 includes six first electrode terminals 21 and three second electrode terminals 22. The first connecting terminal 11 of each input terminal of the power module 1 is respectively welded to two first electrode terminals 21, and the second connecting terminal 12 of each input terminal of the power module 1 is respectively welded to one second electrode terminal 22. In this way, the setting of long copper bars can be avoided, which helps to reduce the pressing force of the first electrode terminals 21 during the welding process of the first electrode terminals 21 and the first connecting terminals 11, and to reduce the pressing force of the second electrode terminals 22 during the welding process of the second electrode terminals 22 and the conductive plate 3, so as to improve the welding effect, and also helps to save the material cost of the output terminals of the capacitor.

[0064] The embodiment of the present application further provides an electric machine controller, which includes the power module or the electrical connection device of the foregoing embodiment. The control of the electric machine structure is realized through the electric machine controller.

[0065] The embodiment of the present application further provides an electric control assembly, which includes the electric machine controller or the power module or the electrical connection device of any one of the foregoing embodiments.

[0066] In the embodiment, the electric control assembly can be used for controlling a power system of a vehicle, and the electric control assembly comprises the electric connection device, which can be a vehicle inverter, and the vehicle inverter works with a battery, a generator, a fuse and other components to form a complete power management system, which can convert direct current of the vehicle battery into alternating current to ensure that the vehicle can obtain stable and reliable power supply under various working conditions. The overall volume and energy loss of the vehicle inverter are reduced, and the power density is improved, so that the working efficiency of the electric control assembly can be effectively improved. When the electric connection device is the vehicle inverter, the capacitor and the power module 1 can be matched components of the generator, and the specific type can be set according to actual needs, which is not limited in the embodiment.

[0067] The embodiment of the application further provides a vehicle comprising the electric control assembly, the motor controller, the electric connection device or the power module of the foregoing embodiments.

[0068] In the embodiment, the vehicle can be a pure electric vehicle or a hybrid vehicle, and the vehicle comprises the electric control assembly of the foregoing embodiments, which is helpful to improve the endurance and driving ability of the vehicle.

[0069] Finally, it should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or terminal device. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of another identical element in the process, method, article or terminal device comprising the element.

[0070] The above description is only the preferred embodiment of the application and is not intended to limit the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A power module (1) comprising a first connection terminal (11) and a second connection terminal (12); the first connection terminal (11) comprises a first connection portion (111) arranged along a first direction (X) and a second connection portion (112) connected to an end of the first connection portion (111) along the first direction (X), the second connection portion (112) being arranged along a second direction (Z); the first direction (X) intersects the second direction (Z); the first connection portion (111) and the second connection terminal (12) are arranged in a stack along the second direction (Z).

2. The power module (1) according to claim 1, wherein a support member (14) is further included; the support member (14) is arranged on a side of the first connection portion (111) facing away from the second connection terminal (12) and abuts against a side of the second connection portion (112) close to the first connection portion (111).

3. The power module (1) according to claim 2, wherein the support member (14) comprises a body portion (141) and a support portion (142); the body portion (141) is arranged along the first direction (X) and the support portion (142) is connected to an end of the body portion (141) along the first direction (X); the support portion (142) extends in a direction facing away from the second connection terminal (12) and abuts against a side of the second connection portion (112) close to the first connection portion (111).

4. The power module (1) according to claim 3, wherein the body portion (141) and the support portion (142) are formed as one piece; and / or a surface of the support portion (142) on a side facing away from the second connection portion (112) is curved.

5. An electrical connection device, wherein, a capacitor and the power module (1) according to any one of claims 1 to 4 are included; the capacitor comprises a first electrode terminal (21) and a second electrode terminal (22), the first electrode terminal (21) and the second electrode terminal (22) being arranged in a stack along the first direction (X); at least a portion of the first electrode terminal (21) is connected to the second connection portion (112) and the second electrode terminal (22) is connected to the second connection terminal (12).

6. The electrical connection device of claim 5, wherein, the first electrode terminal (21) comprises a main body portion (211) and an end portion (212); the end portion (212) is electrically conductively connected to the second connection portion (112) and a thickness dimension of the end portion (212) along the first direction (X) is smaller than a thickness dimension of the main body portion (211) along the first direction (X).

7. The electrical connection device of claim 5 or 6, wherein, a conductive plate (3) is further included, the conductive plate (3) comprising a first bent portion (31) and a second bent portion (32); the first bent portion (31) is arranged on a side of the second connection terminal (12) facing away from the first connection terminal (11), at least a portion of the first bent portion (31) being electrically conductively connected to the second connection terminal (12); the second bent portion (32) is arranged on a side of the second electrode terminal (22) facing away from the first electrode terminal (21), at least a portion of the second bent portion (32) being electrically conductively connected to the second electrode terminal (22).

8. The electrical connection device of claim 7, wherein, The first bending part (31) and the second bending part (32) are connected by a hole (33).

9. The electrical connection device of claim 7 or 8, wherein, The first electrode terminal (21) is welded with the second connecting part (112), the second electrode terminal (22) is welded with the second bending part (32), and the second connecting terminal (12) is welded with the first bending part (31).

10. The electrical connection device according to any one of claims 7-9, wherein, Further comprising a first insulating layer (4); The first insulating layer (4) is connected to at least part of the inner side of the conductive plate (3), wherein the inner side of the conductive plate (3) refers to the side of the conductive plate (3) that is in conductive connection with the second connecting terminal (12) and the second electrode terminal (22).

11. The electrical connection device according to any one of claims 5-10, wherein, Further comprising a second insulating layer (5); The second insulating layer (5) is connected between the first electrode terminal (21) and the second electrode terminal (22).

12. The electrical connection device according to any one of claims 5-10, wherein, The first electrode terminal (21) is at least two, and the second connecting part (112) is connected with at least two first electrode terminals (21); And / or, the second electrode terminal (22) is at least two, and the second connecting terminal (12) is connected with at least two second electrode terminals (22).

13. An electric machine controller comprising the power module of any one of claims 1 to 4 or the electrical connection arrangement of any one of claims 5 to 12.

14. An electric control assembly comprising the power module of any one of claims 1 to 4, or the electrical connection arrangement of any one of claims 5 to 12, or the electric machine controller of claim 13.

15. A vehicle comprising the electric control assembly of claim 14, or the electric machine controller of claim 13, or the electrical connection arrangement of any one of claims 5 to 12, or the power module of any one of claims 1 to 4.

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