An inverter, an electric drive assembly, and a vehicle

Abstract

This application discloses an inverter, an electric drive assembly, and a vehicle. The inverter includes a body and a connection assembly. The connection assembly includes multiple conductive elements, which are at least partially spaced along a second direction. The multiple conductive elements are used to connect the body to a first motor and a second motor. Compared with related technologies, the connection assembly of this application replaces two independently processed output copper busbars. The multiple conductive elements are at least partially spaced along the second direction, which ensures that the size of the connection assembly is not too large in both the first and second directions, while facilitating installation and improving the power density of the inverter.

Description

Technical Field

[0001] This application belongs to the field of vehicle technology, specifically relating to an inverter, an electric drive assembly, and a vehicle. Background Technology

[0002] A dual inverter is a core component of a hybrid or dual-motor pure electric drive system. It is used to convert the direct current (DC) power from the battery into alternating current (AC) power to drive the drive motor, or to convert AC power into DC power to charge the battery or directly power the drive motor. A dual inverter typically has two sets of output copper busbars. One set of output copper busbars is electrically connected to the drive motor, and the other set of output copper busbars is electrically connected to the generator motor.

[0003] In related technologies, the two sets of output copper busbars of automotive dual inverters need to be processed and installed independently, which makes the overall volume of the output copper busbars large and the processing cost high, resulting in a lower power density of automotive dual inverters. Utility Model Content

[0004] This application aims to provide an inverter, electric drive assembly, and vehicle that can solve the problem in related technologies where the two sets of output copper busbars of a vehicle dual inverter need to be independently processed and installed, resulting in a large overall volume of the output copper busbars, high processing costs, and low power density of the vehicle dual inverter.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows: In a first aspect, embodiments of this application provide an inverter, comprising: a body; A connecting component, the connecting component including a plurality of conductive elements, the plurality of conductive elements being at least partially spaced along a second direction, the plurality of conductive elements being used to connect the body to a first motor and a second motor.

[0006] Optionally, a plurality of the conductive elements form a first connection portion at one end facing the body, and the first connection portion is electrically connected to the body; Multiple conductive elements form a second connection portion and a third connection portion at one end away from the main body. The second connection portion and the third connection portion are arranged at intervals along a first direction. The second connection portion is adapted to be electrically connected to the first motor, and the third connection portion is adapted to be electrically connected to the second motor. The first direction and the second direction are perpendicular to each other.

[0007] Optionally, the first connecting portion is provided with a first terminal and a second terminal on the side facing the body, the first terminal and the second terminal are spaced apart along the first direction, and both the first terminal and the second terminal are electrically connected to the body; The second connecting part is provided with a third terminal, which is electrically connected to the first terminal and is adapted to be electrically connected to the first motor; The third connecting part is provided with a fourth terminal, which is electrically connected to the second terminal and is adapted to be electrically connected to the second motor.

[0008] Optionally, the plurality of conductive elements include a first conductive element, and the connecting assembly further includes an insulating element. The first conductive element is embedded in the insulating element. The first conductive element includes a first connecting segment, a second connecting segment, and a first bending segment. The first bending segment is connected between the first connecting segment and the second connecting segment. The first connecting segment and the insulating element covering the outer periphery form a part of the first connecting portion. The second connecting segment and the insulating element covering the outer periphery form the second connecting portion. The first connecting segment is at least partially exposed to the insulating member to form the first terminal, and the second connecting segment is at least partially exposed to the insulating member to form the third terminal.

[0009] Optionally, the first conductive element is provided in three parts, with any two first bending segments spaced apart along the second direction, and the other first bending segment arranged side by side with the two first bending segments along the first direction; the three first connecting segments form three first terminals, the three first terminals are spaced apart along the first direction, the three second connecting segments form three third terminals, the three third terminals are staggered along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0010] Optionally, the plurality of conductive elements further includes a second conductive element, which is embedded in the insulating element and spaced apart from the first conductive element along the first direction. The second conductive element includes a third connecting segment, a fourth connecting segment, and a second bending segment. The second bending segment connects the third connecting segment and the fourth connecting segment. The third connecting segment and the insulating element covering the outer periphery form another part of the first connecting portion. The fourth connecting segment and the insulating element covering the outer periphery form the third connecting portion. The third connecting segment is at least partially exposed outside the insulating member to form the second terminal, and the fourth connecting segment is at least partially exposed outside the insulating member to form the fourth terminal.

[0011] Optionally, the second conductive element is provided in three parts, with any two second bending segments spaced apart along the second direction, and the other second bending segment arranged side by side with the two second bending segments along the first direction; the three third connecting segments form three second terminals, and the three second terminals are spaced apart along the first direction; The three fourth connecting segments form the three fourth terminals, which are staggered along a third direction, with the first direction, the second direction, and the third direction being perpendicular to each other.

[0012] Optionally, the connecting assembly further includes a mounting portion and two shielding members. The mounting portion is connected between the first connecting portion, the second connecting portion, and the third connecting portion. The mounting portion has a first mounting groove surrounding the second connecting portion and a second mounting groove surrounding the third connecting portion. One shielding member is disposed in the first mounting groove and sleeved on the outer periphery of the second connecting portion; the other shielding member is disposed in the second mounting groove and sleeved on the outer periphery of the third connecting portion.

[0013] Optionally, the connecting assembly further includes a cover plate connected to the mounting portion to cover the first mounting slot and the second mounting slot.

[0014] Optionally, the inverter further includes a seal, and a third mounting groove is provided on the outer periphery of the mounting portion. The seal is disposed in the third mounting groove to seal between the body and the connecting assembly.

[0015] Secondly, embodiments of this application propose an electric drive assembly, including: a first motor, a second motor, and an inverter as described in any of the preceding claims, wherein a plurality of the conductive elements are electrically connected to the first motor and the second motor respectively.

[0016] Thirdly, embodiments of this application propose a vehicle comprising: an inverter as described in any of the preceding claims, or an electric drive assembly as described in the preceding claims.

[0017] In the embodiments of this application, the inverter includes a body and a connection assembly. The connection assembly includes multiple conductive elements, which are at least partially spaced along a second direction. The multiple conductive elements are used to connect the body to a first motor and a second motor. Compared with related technologies, the connection assembly of this application replaces two independently processed output copper busbars. The multiple conductive elements are at least partially spaced along the second direction, which ensures that the dimensions of the formed connection assembly are not too large in both the first and second directions, thereby reducing the overall volume of the connection assembly. At the same time, it facilitates installation and improves the power density of the inverter.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of an electric drive assembly according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the connection component according to an embodiment of this application; Figure 3 This is an exploded view of the connection component according to an embodiment of this application; Figure 4 This is a schematic diagram of a conductive element according to an embodiment of this application from a first-view perspective; Figure 5 This is a schematic diagram of a conductive element according to an embodiment of this application from a second perspective; Figure 6 This is a schematic diagram of a conductive element according to an embodiment of this application from a third perspective.

[0020] Figure label: 1: Body; 2: Connecting assembly; 20: Conductive component; 21: First connecting part; 211: First terminal; 212: Second terminal; 22: Second connecting part; 221: Third terminal; 23: Third connecting part; 231: Fourth terminal; 24: First conductive component; 241: First connecting segment; 242: Second connecting segment; 243: First bending segment; 25: Insulating component; 26: Second conductive component; 261: Third connecting segment; 262: Fourth connecting segment; 263: Second bending segment; 27: Mounting part; 271: First mounting groove; 272: Second mounting groove; 273: Third mounting groove; 28: Shielding component; 29: Cover plate; 3: First motor; 4: Second motor; 5: Sealing component; X: First direction; Y: Second direction; Z: Third direction. Detailed Implementation

[0021] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used 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 inventive effort are within the scope of protection of this application.

[0022] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0023] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are 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, and therefore should not be construed as a limitation of this application.

[0024] 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, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] Before explaining the inverter, electric drive assembly, and vehicle provided in the embodiments of this application, the application scenarios of the inverter, electric drive assembly, and vehicle provided in the embodiments of this application will be specifically described: An electric drive system consisting of a dual inverter, a drive motor, and a generator is an efficient and flexible power solution widely used in hybrid electric vehicles (HEV / PHEV), range-extended electric vehicles (REEV), or dual-motor vehicles. The dual inverter typically has two main functions: an inverter function that converts the high-voltage DC power input from the battery into three-phase AC power to drive the drive motor; and a rectification function that converts the three-phase AC power generated by the generator driven by the range extender into high-voltage DC power to charge the battery or power the drive motor.

[0026] In related technologies, automotive dual inverters are generally electrically connected to the drive motor and generator via two output copper busbars. The two output copper busbars are manufactured independently and installed into the housing of the automotive dual inverter. One end of one output copper busbar is connected to the output terminal of the power module of the automotive dual inverter, and the other end is connected to the drive motor; one end of the other output copper busbar is connected to the output terminal of the power module of the automotive dual inverter, and the other end is electrically connected to the generator.

[0027] This type of automotive dual inverter typically has the following drawbacks: 1. The copper busbars are arranged horizontally inside the plastic-coated parts. Due to the wide width of a single copper busbar, the horizontal dimension occupied by the output copper busbars is large. In addition, the two output copper busbars need to be separated by a distance to avoid gaps and need to be fixed at a separate mounting point, which makes the overall volume occupied by the two output copper busbars large, resulting in a low power density of the automotive dual inverter. 2. Since both output copper busbars need to be processed independently, the processing cost is relatively high; 3. The copper busbars embedded in the plastic-coated parts of the output copper busbars are arranged horizontally, which makes the plastic-coated parts use more material. At the same time, the overall size of the shielding parts is larger, requiring more material. 4. The two output copper busbars need to be installed separately, which makes the installation process more complicated and the installation operation more complex.

[0028] Therefore, this application provides an inverter, an electric drive assembly, and a vehicle. The protection device and energy storage device provided in this application will be described in detail below with reference to the accompanying drawings and specific embodiments and application scenarios.

[0029] like Figure 1 and Figure 4 As shown, an inverter according to some embodiments of this application includes: a body 1 and a connection component 2. The connection component 2 includes a plurality of conductive elements 20. The plurality of conductive elements 20 are at least partially spaced along a second direction Y. The plurality of conductive elements 20 are used to connect the body 1 with a first motor 3 and a second motor 4.

[0030] In this application, compared with related technologies, the connection component 2 replaces two independent output copper busbars. The connection component 2 has a higher integration, reduces the overall volume, thereby reducing the space occupied and the amount of material used in the components. The multiple conductive elements 20 are at least partially spaced along the second direction Y, which ensures that the dimensions of the formed connection component 2 in the first direction X and the second direction Y are not too large, thereby reducing the overall volume of the connection component 2. At the same time, it is easy to install and improves the power density of the inverter.

[0031] It should be explained that the inverter has a first direction X, a second direction Y, and a third direction Z that are mutually perpendicular. Specifically, the first direction X is the length direction of the inverter, or it can be the arrangement direction of the first motor 3 and the second motor 4; the second direction Y is the width direction of the inverter, and the third direction Z is the height direction of the inverter. The first direction Z, the second direction Y, and the third direction X are mutually perpendicular. Specifically, they can be strictly "perpendicular," for example, the angle between any two of the first direction Z, the second direction Y, and the third direction X is 90°; or they can be "approximately perpendicular," specifically, the angle between any two of the first direction Z, the second direction Y, and the third direction X includes a certain error. Considering the measurement and the error associated with the measurement of a specific quantity (i.e., the limitation of the measurement system), this error is within the acceptable deviation range for a specific value as determined by a person skilled in the art. For example, the angle between the first direction Z and the second direction Y is 90° ± 5°.

[0032] In specific applications, such as Figure 1 As shown, the main body 1 is electrically connected to both the first motor 3 and the second motor 4 via the connecting component 2, thereby enabling the main body 1 to output or input signals to the first motor 3 and the second motor 4 to control their operating states; as Figure 4 As shown, the connecting assembly 2 has multiple conductive elements 20 arranged along the first direction X. Specifically, there are 6 conductive elements 20, of which three conductive elements 20 are arranged at least partially along the second direction Y to connect one three-phase (U, V, W) output terminal of the main body 1 to the three-phase input terminal of the first motor 3, and the other three conductive elements 20 are arranged at least partially along the second direction Y to connect another three-phase output terminal of the main body 1 to the three-phase input terminal of the second motor 4.

[0033] It should be noted that the main body 1 refers to the other components of the inverter, specifically including the housing and the power module (IGBT or SiC MSFET), DC bus capacitor, gate drive circuit, current sensor, voltage sensor, control unit, etc., housed in the housing. The power module converts the direct current (DC) of the battery into alternating current (AC) to drive the drive motor through PWM, or rectifies the AC power generated by the generator into DC power to recharge the battery. In practical applications, the output terminal of the power module is electrically connected to the first connection part 21, then electrically connected to the first motor 3 through the second connection part 22, and electrically connected to the second motor 4 through the third connection part 23.

[0034] Specifically, the first motor 3 and the second motor 4, one of which is a drive motor and the other is a generator, can be selected according to actual needs, and this application does not impose any restrictions on this.

[0035] It should be noted that the conductive component 20 can be a wire or a metal component, such as a copper busbar or an aluminum busbar. For example, when the conductive component 20 is a copper busbar, some of the multiple copper busbars are arranged at intervals along the second direction Y, and the wide surfaces of the copper busbars are parallel to each other. These copper busbars form a "stack". Another part of the copper busbars is arranged side by side with the aforementioned part of the copper busbars along the first direction X. This ensures that the multiple conductive components 20 do not occupy too much space in the first direction X and the second direction Y, thereby ensuring that the overall volume of the formed connection component 2 is not too large.

[0036] like Figure 1 and Figure 2 As shown, in some embodiments of this application, a plurality of conductive elements 20 form a first connection portion 21 at one end facing the body 1, the first connection portion 21 being electrically connected to the body 1, and a plurality of conductive elements 20 form a second connection portion 22 and a third connection portion 23 at one end away from the body 1, the second connection portion 22 and the third connection portion 23 being arranged at intervals along a first direction X, the second connection portion 22 being adapted to be electrically connected to the first motor 3, and the third connection portion 23 being adapted to be electrically connected to the second motor 4.

[0037] In this embodiment, the first connecting part 21 is located close to the body 1, which facilitates the electrical connection between the first connecting part 21 and the body 1. The second connecting part 22 formed by multiple conductive parts 20 on the side away from the body 1 can be easily connected to the first motor 3, and the third connecting part 23 can be easily connected to the second motor 4. This makes the overall structure of the inverter more compact, reduces the size of the inverter, and improves the ease of installation.

[0038] In a specific application, the first connection part 21 extends along the first direction X, thereby electrically connecting to the output terminal on the inverter body 1. The second connection part 22 and the third connection part 23 are connected to the side of the first connection part 21 away from the body 1 and extend along the third direction Z, thereby facilitating electrical connection with the first motor 3 and the second motor 4. At the same time, the first connection part 21, the second connection part 22 and the third connection part 23 are integrated together, reducing the overall size. In particular, the size of the connection component 2 along the first direction X makes the space occupied by the connection component 2 smaller.

[0039] like Figure 3 and Figure 4As shown, in some embodiments of this application, the first connecting portion 21 is provided with a first terminal 211 and a second terminal 212 on the side facing the body 1. The first terminal 211 and the second terminal 212 are spaced apart along the first direction X, and both the first terminal 211 and the second terminal 212 are electrically connected to the body 1. The second connecting portion 22 is provided with a third terminal 221, which is electrically connected to the first terminal 211 and is adapted to be electrically connected to the first motor 3. The third connecting portion 23 is provided with a fourth terminal 231, which is electrically connected to the second terminal 212 and is adapted to be electrically connected to the second motor 4.

[0040] In this embodiment, the inverter body 1 can be electrically connected to the first motor 3 via a first terminal 211 on the first connection part 21 and a third terminal 221 on the second connection part 22, thereby realizing control of the first motor 3. At the same time, the inverter body 1 can be electrically connected to the second motor 4 via a second terminal 212 on the first connection part 21 and a fourth terminal 231 on the third connection part 23, thereby realizing control of the second motor 4. Furthermore, the first terminal 211 and the second terminal 212 are both located on the side of the first connection part 21 facing the body 1, which facilitates connection with the body 1. The first terminal 211 and the second terminal 212 are spaced apart along the first direction X, which can achieve insulation isolation and reduce the risk of signal interference.

[0041] In specific applications, the first terminal 211 and the third terminal 221 are electrically connected, and the second terminal 212 and the fourth terminal 231 are electrically connected. Specifically, the electrical connection can be made through a wire or through a conductive component. The conductive component can be made of conductive metals such as copper busbars or aluminum busbars. Those skilled in the art can configure it according to actual needs, and this application does not impose any restrictions on it.

[0042] It should be noted that there are three terminals 211, 212, 221 and 231, which correspond to the U phase, V phase and W phase of the three-phase AC, respectively, so as to realize the flow of AC power.

[0043] Understandably, the first terminal 211, the second terminal 212, the third terminal 221, and the fourth terminal 231 can be specifically configured as standardized plug-in interfaces, such as bolt-fixed or quick-connect interfaces, for example... Figure 4 As shown, it is a quick-connect interface.

[0044] like Figures 3 to 6As shown, in some embodiments of this application, the plurality of conductive elements 20 include a first conductive element 24, and the connecting assembly 2 further includes an insulating element 25. The first conductive element 24 is embedded in the insulating element 25. The first conductive element 24 includes a first connecting segment 241, a second connecting segment 242, and a first bending segment 243. The first bending segment 243 is connected between the first connecting segment 241 and the second connecting segment 242. The first connecting segment 241 and the insulating element 25 covering the outer periphery form a part of the first connecting portion 21. The second connecting segment 242 and the insulating element 25 covering the outer periphery form a second connecting portion 22. The first connecting segment 241 is at least partially exposed in the insulating element 25 to form a first terminal 211, and the second connecting segment 242 is at least partially exposed in the insulating element 25 to form a third terminal 221.

[0045] In this embodiment, the first conductive element 24 is embedded in the insulating element 25, and the first connecting segment 241 is at least partially exposed outside the insulating element 25 to form the first terminal 211, and the second connecting segment 242 is at least partially exposed outside the insulating element 25 to form the third terminal 221. Thus, internal wiring is achieved within the insulating element 25 through the first conductive element 24, improving electrical safety and reliability. At the same time, the first connecting segment 241 and the second connecting segment 242 of the first conductive element 24 can respectively form the first terminal 211 and the third terminal 221 to facilitate electrical connection with the body 1 and the first motor 3. The first bending segment 243 can connect the first connecting segment 241 and the second connecting segment 242 located in different positions, further reducing the volume of the connecting assembly 2.

[0046] It should be explained that the first conductive element 24 is specifically a copper busbar, and the insulating element 25 is specifically a plastic-coated part, and the two are integrally formed by injection molding; the first conductive element 24 is embedded in the insulating element 25, and the insulating element 25 can provide insulation protection for the first conductive element 24; wherein, the first connecting segment 241 of the first conductive element 24 and the insulating element 25 covering its outer periphery can form part of the first connecting portion 21, and the second connecting segment 242 of the first conductive element 24 and the insulating element 25 covering its outer periphery can form the second connecting portion 22; the first bending segment 243 connects the first connecting segment 241 and the second connecting segment 242 inside the insulating element 25.

[0047] It should be noted that the first connecting segment 241 of the first conductive element 24 can extend along the first direction X, the second connecting segment 242 can extend along the third direction Z, and the first bending segment 243 can be bent and extended to connect the first connecting segment 241 and the second connecting segment 242; thus, the first conductive element 24 can be in a "7" shape. Of course, if the first connecting segment 241 is close to the output end of the body 1, it may not need to be bent and extended. Figure 4The rightmost first conductive element 24 shown does not need to be bent or extended, while the other two first conductive elements 24 need to be bent and extended in order to connect to the output end of the main body 1.

[0048] like Figures 4 to 6 As shown, in some embodiments of this application, three first conductive elements 24 are provided, any two first bending segments 243 are spaced apart along the second direction Y, and another first bending segment 243 is arranged side by side with the two first bending segments 243 along the first direction X; the three first connecting segments 241 form three first terminals 211, the three first terminals 211 are spaced apart along the first direction X, and the three second connecting segments 242 form three third terminals 221, the three third terminals 221 are staggered along the third direction Z, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0049] In this embodiment, the three first conductive elements 24 can respectively form three-phase connection terminals, thereby corresponding to the three-phase lines of the first motor 3 and the body 1; at the same time, any two first bending segments 243 are spaced apart along the second direction Y, and the other first bending segment 243 is arranged side by side with the two first bending segments 343 along the first direction X. While forming a three-phase connection, compared with related technologies, the dimensions of the three first conductive elements 24 in the first direction X and the second direction Y are not too large, so that the overall size of the connection assembly 2 formed after injection molding with the insulating element 25 is moderate.

[0050] It needs to be explained that, such as Figure 4 As shown, two of the three third terminals 221 are collinear along the third direction Z, and the other third terminal 221 is spaced apart from the aforementioned two third terminals 221 in the first direction X. In other words, the three third terminals 221 are staggered along the third direction Z.

[0051] In specific applications, three first conductive elements 24 are provided, corresponding to the U-phase, V-phase, and W-phase circuits respectively, thus adapting to the three-phase output terminals of the main body 1 and the three-phase input terminals of the first motor 3; for example Figure 5 In practical applications, the first bending segment 243 can be bent as needed so that the formed first terminal 211 and third terminal 221 are adapted to the corresponding connection positions, while ensuring that the two adjacent first bending segments 243 have sufficient gaps to fill the insulating member 25 for insulation isolation.

[0052] Understandably, such as Figure 4 and Figure 6 As shown, the three first connecting segments 241 form three first terminals 211. Specifically, they can be spaced apart by a certain gap, thereby creating electrical isolation between adjacent first terminals 211; or they can be as follows: Figure 3As shown, the insulating member 25 protrudes between two adjacent third terminals 221 to form an insulating isolation portion. The specific arrangement depends on the connection position, and those skilled in the art can make the arrangement according to actual needs. This application does not impose any restrictions on this arrangement.

[0053] It should be noted that the first bending segments 243 of any two first conductive elements 24 are spaced apart along the second direction Y, and the wide surface is perpendicular to the second direction Y; at the same time, another first bending segment 243 is arranged side by side with the aforementioned two first bending segments 243 along the first direction X, that is, the wide surface is parallel. Compared with related technologies, the size of the connecting component 2 in the first direction X and the second direction Y can be reduced simultaneously.

[0054] like Figures 3 to 6 As shown, in some embodiments of this application, the plurality of conductive elements 20 further include a second conductive element 26. The second conductive element 26 is embedded in the insulating element 25 and is spaced apart from the first conductive element 24 along the first direction X. The second conductive element 26 includes a third connecting segment 261, a fourth connecting segment 262, and a second bending segment 263. The second bending segment 263 is connected between the third connecting segment 261 and the fourth connecting segment 262. The third connecting segment 261 and the insulating element 25 covering the outer periphery form another part of the first connecting portion 21. The fourth connecting segment 262 and the insulating element 25 covering the outer periphery form the third connecting portion 23. The third connecting segment 261 is at least partially exposed outside the insulating element 25 to form a second terminal 212, and the fourth connecting segment 262 is at least partially exposed outside the insulating element 25 to form a fourth terminal 231.

[0055] In this embodiment, the second conductive element 26 is embedded within the insulating element 25, and the third connecting segment 261 is at least partially exposed outside the insulating element 25 to form the second terminal 212, and the fourth connecting segment 262 is at least partially exposed outside the insulating element 25 to form the fourth terminal 231. This allows for internal wiring within the insulating element 25 via the second conductive element 26, improving electrical safety and reliability. Simultaneously, the third connecting segment 261 and the fourth connecting segment 262 of the second conductive element 26 can respectively form the second terminal 212 and the fourth terminal 231, facilitating electrical connection with the body 1 and the second motor 4. The second bending segment 263 can connect the third connecting segment 261 and the fourth connecting segment 262 located in different orientations, further reducing the volume of the connecting assembly 2.

[0056] It should be explained that the second conductive element 26 is specifically a copper busbar, and the insulating element 25 is specifically a plastic-coated part, and the two are integrally formed by injection molding; the second conductive element 26 is embedded in the insulating element 25, and the insulating element 25 can provide insulation protection for the second conductive element 26; wherein, the third connecting segment 261 of the second conductive element 26 and the insulating element 25 covering its outer periphery can form another part of the first connecting portion 21, and the fourth connecting segment 262 of the second conductive element 26 and the insulating element 25 covering its outer periphery can form the third connecting portion 23; the second bending segment 263 connects the third connecting segment 261 and the fourth connecting segment 262 inside the insulating element 25.

[0057] It should be noted that the third connecting segment 261 of the second conductive member 26 can extend along the first direction X, the fourth connecting segment 262 of the second conductive member 26 can extend along the third direction Z, and the second bending segment 263 can be bent and extended to connect the third connecting segment 261 and the fourth connecting segment 262; thus, the second conductive member 26 can be in a "7" shape. Of course, if the third connecting segment 261 is close to the output end of the body 1, it may not need to be bent and extended. Figure 4 The leftmost second conductive member 26 shown does not need to be bent or extended, while the other two second conductive members 26 need to be bent and extended in order to connect to the output end of the main body 1.

[0058] like Figures 4 to 6 As shown, in some embodiments of this application, three second conductive elements 26 are provided, any two second bending segments 263 are spaced apart along the second direction Y, and another second bending segment 263 is arranged side by side with the two second bending segments 263 along the first direction X; three third connecting segments 261 form three second terminals 212, and the three second terminals 212 are spaced apart along the first direction X; three fourth connecting segments 262 form three fourth terminals 231, and the three fourth terminals 231 are staggered along the third direction Z, with the first direction X, the second direction Y, and the third direction Z being perpendicular to each other.

[0059] In this embodiment, the three second conductive elements 26 can respectively form three-phase connection terminals, thereby corresponding to the three-phase lines of the first motor 3 and the body 1; at the same time, any two second bending segments 263 are spaced apart along the second direction Y, and the other second bending segment 263 is arranged side by side with the two first bending segments 263 along the first direction X. While forming a three-phase connection, compared with related technologies, the dimensions of the three second conductive elements 26 in the first direction X and the second direction Y are not too large, so that the overall size of the connection assembly 2 formed after injection molding with the insulating element 25 is moderate.

[0060] It needs to be explained that, such as Figure 4As shown, two of the three fourth terminals 231 are collinear along the third direction Z, and the other fourth terminal 231 is spaced apart from the aforementioned two fourth terminals 231 in the first direction X. In other words, the three fourth terminals 231 are staggered along the third direction Z.

[0061] In specific applications, three second conductive elements 26 are provided, corresponding to the U-phase, V-phase, and W-phase circuits respectively, thus adapting to the three-phase output terminals of the main body 1 and the three-phase input terminals of the first motor 3; for example Figure 5 In practical applications, the second bending segment 263 can be bent as needed so that the formed second terminal 212 and fourth terminal 231 are adapted to the corresponding connection positions, while ensuring that the two adjacent second bending segments 263 have sufficient gaps to fill the insulating member 25 for insulation isolation.

[0062] Understandably, such as Figure 3 , Figure 4 and Figure 6 As shown, the three third connecting segments 261 form three second terminals 212, and the three fourth connecting segments 262 form three fourth terminals 231. Specifically, the insulating member 25 can protrude between two adjacent second terminals 212 or two adjacent fourth terminals 231 to form an insulating isolation portion for insulation isolation; or it can be that two adjacent first terminals 211 are spaced apart by a certain gap to form electrical isolation. The specific configuration depends on the connection position. Those skilled in the art can set it according to actual needs, and this application does not limit it.

[0063] It should be explained that the second bending segments 263 of any two second conductive elements 26 are spaced apart along the second direction Y, and the wide surface is perpendicular to the second direction Y; at the same time, another second bending segment 263 is arranged side by side with the aforementioned two second bending segments 263 along the first direction, that is, the wide surface is parallel. Compared with related technologies, the size of the connecting component 2 in the first direction X and the second direction Y can be reduced simultaneously.

[0064] like Figure 3 As shown, in some embodiments of this application, the connecting component 2 further includes a mounting portion 27 and two shielding members 28. The mounting portion 27 is connected between the first connecting portion 21, the second connecting portion 22, and the third connecting portion 23. The mounting portion 27 is provided with a first mounting groove 271 surrounding the second connecting portion 22 and a second mounting groove 272 surrounding the third connecting portion 23. One shielding member 28 is disposed in the first mounting groove 271 and sleeved on the outer periphery of the second connecting portion 22; the other shielding member 28 is disposed in the second mounting groove 272 and sleeved on the outer periphery of the third connecting portion 23.

[0065] In this embodiment, a mounting portion 27 between the first connecting portion 21 and the second connecting portion 22 and the third connecting portion 23 is provided with a first mounting groove 271 and a second mounting groove 272. A shield 28 is disposed in the first mounting groove 271 and sleeved on the outer periphery of the second connecting portion 22, which can suppress the electromagnetic interference of the first conductive member 24 in the second connecting portion 22. Another shield 28 is disposed in the second mounting groove 272 and sleeved on the outer periphery of the third connecting portion 23, which can suppress the electromagnetic interference of the second conductive member 26 in the third connecting portion 23, thereby improving the EMC (Electro Magnetic Compatibility) performance of the inverter.

[0066] In specific applications, the shielding element 28 can be a nanocrystalline magnetic ring, a ferrite magnetic ring, a magnetic bead, a common-mode choke, a shielding material layer, etc. Preferably, the shielding element 28 is a nanocrystalline magnetic ring, which has high saturation magnetic induction intensity and excellent impedance frequency characteristics.

[0067] It should be noted that the first bending segments 243 of any two first conductive elements 24 are spaced apart along the second direction Y, and their wide surfaces are perpendicular to the second direction Y; at the same time, another first bending segment 243 is arranged side by side with the aforementioned two first bending segments 243 along the first direction X, that is, their wide surfaces are parallel; the second bending segments 263 of any two second conductive elements 26 are spaced apart along the second direction Y, and their wide surfaces are perpendicular to the second direction Y; at the same time, another second bending segment 263 is arranged side by side with the aforementioned two second bending segments 263 along the first direction, that is, their wide surfaces are parallel; this makes the circumferential circumference around the third direction Z of forming the second connecting portion 22 and the third connecting portion 23 smaller, that is, it reduces the inductance cross-sectional area of ​​the shielding element 28, so the volume of the shielding element 28 is smaller than that of related technologies, thus the shielding element 28 requires less material and reduces costs; specifically, when the shielding element 28 is a nanocrystalline magnetic ring, the thickness of the nanocrystalline magnetic core and the width of the strip can be smaller.

[0068] It should be explained that in practical applications, after the shielding component 28 is installed in the first mounting slot 271 and the second mounting slot 272, it is also necessary to apply glue for protection and fixation to improve the reliability of the connection.

[0069] like Figure 3 As shown, in some embodiments of this application, the connecting component 2 further includes a cover plate 29, which is connected to the mounting portion 27 to cover the first mounting groove 271 and the second mounting groove 272.

[0070] In this embodiment, the cover plate 29 can cover the first mounting groove 271 and the second mounting groove 272, thereby protecting the shielding component 28 and improving the service life of the shielding component 28.

[0071] In a specific application, the cover plate 29 is provided with mounting holes, so that the mounting holes can be fitted around the outer periphery of the second connecting part 22 and the third connecting part 23 to cover the first mounting groove 271 and the second mounting groove 272.

[0072] like Figure 3 As shown, in some embodiments of this application, the inverter further includes a seal 5, and a third mounting groove 273 is provided on the outer periphery of the mounting part 27. The seal 5 is disposed in the third mounting groove 273 to seal the body 1 and the connecting assembly 2.

[0073] In this embodiment, the sealing element 5 is disposed in the third mounting groove 273 on the outer periphery of the mounting part 27, which can seal the body 1 and the connecting component 2, thereby improving the sealing performance of the inverter.

[0074] In specific applications, the sealing element 5 can be an O-ring, a gasket, etc. Those skilled in the art can choose according to actual needs, and this application does not impose any restrictions on it.

[0075] It should be noted that the body 1 contains oil, and the seal 5 can reduce the possibility of oil seeping out between the body 1 and the connecting component 2.

[0076] Understandably, in practical applications, the mounting part 27 is detachably connected to the housing of the body 1. For example, the mounting part 27 is connected to the housing of the body 1 by bolts. Since the connecting component 2 is small in size, compared with related technologies, the number of bolts between the mounting part 27 and the housing of the body 1 can be reduced from 4 to 6 to 2 to 3, thereby improving installation efficiency.

[0077] According to the inverter of this application embodiment, the high integration of the connection component 2, that is, the simultaneous injection molding of the first conductive element 24 and the second conductive element 26, reduces the material used for the plastic coating, shielding element 28, sealing element 5 and cover plate 29, thereby reducing costs. At the same time, the arrangement of multiple first conductive elements 24 and second conductive elements 26 reduces the size of the connection component 2 in the first direction X and the second direction Y, thereby reducing the inductance cross-sectional area of ​​the shielding element 28, and thus reducing the volume of the shielding element 28 and the required material. In addition, the smaller size and integration of the connection component 2 into one piece reduces the number of installation points and improves installation efficiency.

[0078] like Figure 1 As shown, in some embodiments of this application, an electric drive assembly is proposed, including: a first motor 3, a second motor 4, and an inverter as described in any of the above embodiments, wherein a plurality of conductive elements 20 are electrically connected to the first motor 3 and the second motor 4 respectively.

[0079] In the embodiments of this application, the electric drive assembly has the inverter described in any of the above embodiments, and thus has the beneficial effects of the inverter described in any of the above embodiments, which will not be repeated here.

[0080] In specific applications, the first motor 3 and the second motor 4, one of which is a drive motor and the other is a generator.

[0081] In some embodiments of this application, a vehicle is also proposed, including an inverter as described in any of the above embodiments, or an electric drive assembly as described in the above embodiments.

[0082] In specific applications, the vehicle can be a motor vehicle, such as a passenger car, a truck, or a derivative thereof; it can also be a special vehicle, such as a tractor, an excavator, a fire truck, or an ambulance; it can also be a water vehicle, such as an amphibious vehicle; or it can be a rail transit vehicle, such as a train, a subway, or a tram. Those skilled in the art can configure it according to actual needs, and this application does not impose any restrictions on it.

[0083] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0084] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An inverter, characterized in that, include: Ontology(1); The connecting component (2) includes a plurality of conductive elements (20), which are at least partially spaced along a second direction (Y). The plurality of conductive elements (20) form a first connecting portion (21) at one end facing the body (1), and the first connecting portion (21) is electrically connected to the body (1). Multiple conductive elements (20) form a second connection portion (22) and a third connection portion (23) at one end away from the body (1). The second connection portion (22) and the third connection portion (23) are spaced apart along a first direction (X). The second connection portion (22) is adapted to be electrically connected to a first motor (3), and the third connection portion (23) is adapted to be electrically connected to a second motor (4). The first direction (X) and the second direction (Y) are perpendicular to each other.

2. The inverter according to claim 1, characterized in that, The first connecting part (21) is provided with a first terminal (211) and a second terminal (212) on the side facing the body (1). The first terminal (211) and the second terminal (212) are spaced apart along the first direction (X). Both the first terminal (211) and the second terminal (212) are electrically connected to the body (1). The second connecting part (22) is provided with a third terminal (221), the third terminal (221) is electrically connected to the first terminal (211), and the third terminal (221) is adapted to be electrically connected to the first motor (3); The third connecting part (23) is provided with a fourth terminal (231), which is electrically connected to the second terminal (212) and is adapted to be electrically connected to the second motor (4).

3. The inverter according to claim 2, characterized in that, The plurality of conductive elements (20) include a first conductive element (24), and the connecting assembly (2) further includes an insulating element (25). The first conductive element (24) is embedded in the insulating element (25). The first conductive element (24) includes a first connecting segment (241), a second connecting segment (242), and a first bending segment (243). The first bending segment (243) is connected between the first connecting segment (241) and the second connecting segment (242). The first connecting segment (241) and the insulating element (25) covering the outer periphery form a part of the first connecting portion (21). The second connecting segment (242) and the insulating element (25) covering the outer periphery form the second connecting portion (22). The first connecting segment (241) is at least partially exposed outside the insulating member (25) to form the first terminal (211), and the second connecting segment (242) is at least partially exposed outside the insulating member (25) to form the third terminal (221).

4. The inverter according to claim 3, characterized in that, The first conductive element (24) is provided in three parts. Any two of the first bending segments (243) are spaced apart along the second direction (Y), and the other first bending segment (243) is arranged side by side with the two first bending segments (243) along the first direction (X). The three first connecting segments (241) form three first terminals (211), which are spaced apart along the first direction (X). The three second connecting segments (242) form three third terminals (221), which are staggered along the third direction (Z). The first direction (X), the second direction (Y), and the third direction (Z) are perpendicular to each other.

5. The inverter according to claim 3, characterized in that, The plurality of conductive elements (20) further include a second conductive element (26), which is embedded in the insulating element (25) and spaced apart from the first conductive element (24) along the first direction (X). The second conductive element (26) includes a third connecting segment (261), a fourth connecting segment (262), and a second bending segment (263). The second bending segment (263) is connected between the third connecting segment (261) and the fourth connecting segment (262). The third connecting segment (261) and the insulating element (25) covering the outer periphery form another part of the first connecting portion (21). The fourth connecting segment (262) and the insulating element (25) covering the outer periphery form the third connecting portion (23). The third connecting segment (261) is at least partially exposed outside the insulating member (25) to form the second terminal (212), and the fourth connecting segment (262) is at least partially exposed outside the insulating member (25) to form the fourth terminal (231).

6. The inverter according to claim 5, characterized in that, The second conductive element (26) is provided in three parts, with any two second bending segments (263) spaced apart along the second direction (Y), and the other second bending segment (263) arranged side by side with the two second bending segments (263) along the first direction (X); the three third connecting segments (261) form three second terminals (212), and the three second terminals (212) are spaced apart along the first direction (X); The three fourth connecting segments (262) form the three fourth terminals (231), which are staggered along a third direction (Z), with the first direction (X), the second direction (Y) and the third direction (Z) being perpendicular to each other.

7. The inverter according to any one of claims 1-6, characterized in that, The connecting assembly (2) further includes a mounting part (27) and two shielding members (28). The mounting part (27) is connected between the first connecting part (21), the second connecting part (22), and the third connecting part (23). The mounting part (27) is provided with a first mounting groove (271) surrounding the second connecting part (22) and a second mounting groove (272) surrounding the third connecting part (23). One of the shielding members (28) is disposed in the first mounting groove (271) and sleeved on the outer periphery of the second connecting part (22); the other shielding member (28) is disposed in the second mounting groove (272) and sleeved on the outer periphery of the third connecting part (23).

8. The inverter according to claim 7, characterized in that, The connecting assembly (2) further includes a cover plate (29) connected to the mounting part (27) to cover the first mounting groove (271) and the second mounting groove (272).

9. The inverter according to claim 7, characterized in that, The inverter also includes a seal (5), and the outer periphery of the mounting part (27) is provided with a third mounting groove (273). The seal (5) is disposed in the third mounting groove (273) to seal the body (1) and the connecting assembly (2).

10. An electric drive assembly, characterized in that, include: The first motor (3), the second motor (4), and the inverter as described in any one of claims 1-9, wherein the second connection part (22) is electrically connected to the first motor (3), and the third connection part (23) is electrically connected to the second motor (4).

11. A vehicle, characterized in that, include: The inverter as claimed in any one of claims 1-9, or the electric drive assembly as claimed in claim 10.

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