Terminal connectors and electric drive assemblies

Abstract

A terminal connector and an electric drive assembly are disclosed, in which a terminal block and a permeable member are provided on a mounting portion, the terminal block has a plurality of connection terminals for transmitting three-phase electricity, and the first and second connection ends of the connection terminals extend from the mounting portion so that they can be easily electrically connected to a motor controller and a drive motor, respectively. [Effect] As the connection terminal passes through the first coupling space of the permeable member, the induced magnetic field generated by the connection terminal is coupled to the permeable member. By providing the second coupling space on the outside of the mounting part, when the terminal connector is connected to a motor controller, it becomes easy to place the inductive element inside the second coupling space, enabling monitoring of the current at the connection terminal. On the other hand, it further saves space for directly installing a current sensor on the circuit board. Since the terminal block can be electrically connected directly to the power component, it avoids the need to install a current sensor between the terminal block and the power component, shortening the length of the conductive path.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicles, and particularly to terminal connectors and electric drive assemblies.

Background Art

[0002] Three-phase alternating current is one form of electric energy transmission, and is abbreviated as three-phase electricity. The motor controller of an electric vehicle supplies power to the drive motor via a three-phase wiring block. The three-phase wiring block is provided with three terminals for transmitting three-phase electricity. By effectively monitoring the current in the terminals, the driving performance of the motor controller with respect to the drive motor can be guaranteed. It is an issue to be solved to easily monitor the current in the terminals and simplify the mounting structure of the electric drive assembly.

Summary of the Invention

[0003] In view of this, in an embodiment of the present invention, a magnetic flux passing member and a terminal block are both provided in a mounting portion, and by passing a connection terminal through a first coupling space, a combination of a second coupling space and an induction element provided therein simplifies the mounting structure of the electric drive assembly and helps monitor the current, and provides a terminal connector and an electric drive assembly.

[0004] According to a first aspect of an embodiment of the invention, a mounting portion, a terminal block provided in the mounting portion and including a plurality of connection terminals, the terminal block in which the connection terminals include a first connection end and a second connection end, a plurality of magnetic flux passing members provided at intervals in the mounting portion and corresponding one-to-one to the plurality of connection terminals, the magnetic flux passing members having a first coupling space and a second coupling space, the connection terminals passing through the corresponding first coupling space, the first connection end and the second connection end extending from the mounting portion respectively, and a plurality of second coupling spaces provided at intervals and located outside the mounting portion, and a plurality of magnetic flux passing members, wherein an induced magnetic field generated by the connection terminal acts on the second coupling space through the first coupling space, and provides a terminal connector.

[0005] Furthermore, the permeable member includes two extended ends and a bent section in the extending direction, the bent section being located between the two extended ends and bending to form a first coupling space. The two extended ends extend from the mounting portion, and the two extended ends are spaced apart and opposite each other, forming a second connecting space.

[0006] Furthermore, the curved section includes a first segment and two second segments in the extending direction, the two second segments being connected to both ends of the first segment and perpendicular to the first segment. The connecting terminal includes a first extending section in the extending direction, the first extending section is located between the first connecting end and the second connecting end, and has a first side surface and two second side surfaces, the first side surface having a first connecting slit toward the first segment, and the two second side surfaces each having two second connecting slits toward the two second segments.

[0007] Furthermore, the mounting portion has a first mounting surface and a second mounting surface extending laterally from the first mounting surface, and the first connecting end extends from the first mounting surface. The two extended ends of the same permeable member extend from the second mounting surface and have a receiving groove formed with the first mounting surface.

[0008] Furthermore, the mounting portion is an injection-molded component, and the bent section and some of the connecting terminals are provided at intervals inside the mounting portion.

[0009] Furthermore, the connecting terminal includes a first extending section in the extending direction, the first extending section is located between the first connecting end and the second connecting end, and is fixed to the mounting portion as an insert, and a connecting through hole corresponding to the bent section is provided in the first extending section, and the injection molded member is filled into the connecting through hole.

[0010] Furthermore, the terminal connector is Filling rubber and The present invention further includes a magnetic ring that surrounds the terminal block and is provided at a distance from the terminal block, The mounting portion has an annular groove for mounting, and a plurality of second connecting ends extend from the center of the annular groove for mounting. The magnetic ring is provided in the annular groove for mounting and forms at least a partial filling gap with the inner wall of the annular groove for mounting, and the filling rubber is filled into the filling gap.

[0011] Furthermore, the mounting annular groove has a first inner surface and a second inner surface facing opposite directions. The magnetic ring is provided with a gap between the first inner surface and the second inner surface, and a first filling gap and a second filling gap are formed between the first inner surface and the second inner surface, respectively.

[0012] Furthermore, the terminal connector is The structure further includes a cover portion that covers an annular groove for mounting and has multiple windows, with multiple second connecting ends each extending in a one-to-one correspondence from the multiple windows.

[0013] Furthermore, the mounting portion has a positioning surface, and the mounting annular groove is provided surrounding the positioning surface. The window frame abuts against the positioning surface, and there is a gap between the window and the corresponding connection terminal. A filling groove is formed between the window, the positioning surface, and the connection terminal, and the filling rubber is filled into the filling groove.

[0014] Furthermore, the mounting portion has a positioning groove that surrounds the mounting annular groove, The lid includes a baffle, the magnetic ring and the baffle are spaced apart, a third filling gap is formed between the end face of the magnetic ring and the baffle, and a fourth filling gap is formed between the window and the corresponding connection terminal. The baffle's edge is positioned in a positioning groove, the fourth filling gap communicates with the mounting annular groove via the third filling gap, and the filling rubber fills both the third and fourth filling gaps.

[0015] Furthermore, the magnetic ring is made of nanocrystalline material, and the permeable component is made of silicon steel.

[0016] Furthermore, the lid portion further includes a plurality of isolation strips protruding from a surface away from the annular groove for mounting the baffle. The isolation strips are located between two windows, and the extending direction is perpendicular to the arrangement direction of the plurality of windows.

[0017] Furthermore, the mounting portion has a plurality of slots. The lid portion includes a plurality of positioning posts protruding from the side facing the annular groove for mounting the lid portion. The lid portion is covered by the annular groove for mounting, and the plurality of positioning posts are inserted into the plurality of slots in a one-to-one correspondence.

[0018] Furthermore, the mounting portion includes a connection plate and bumps. The connection plate has a first plate edge extending in the length direction of the connection plate. The bumps protrude from one surface of the connection plate, and the magnetically permeable members are provided on the bumps and arranged at intervals in the extending direction of the first plate edge. The plurality of extending ends are located between the bumps and the first plate edge.

[0019] Furthermore, the terminal connector further includes two connection bushes fixed to the connection plate as inserts and located on both sides of the bumps.

[0020] Furthermore, the terminal connector further includes a sealing ring. The mounting portion further includes an insertion body protruding from the surface of the connection plate away from the bumps and having a sealing groove. The second connection end extends from the insertion body, and the sealing ring is fitted into the sealing groove.

[0021] Furthermore, the connection terminal includes a second extending section in the extending direction. The second extending section is located between the second connection end and the mounting portion, and the second extending section is made of soft copper material.

[0022] Furthermore, the connection terminal has a strip structure, and the second extending section has a first extended state and a second extended state. In the first extended state, the plurality of second extending sections are bent in the thickness direction of the strip structure. In the second extended state, the degree of bending of the second extending section is smaller than that in the first extended state and is suitable for passing the magnetic ring.

[0023] In the second aspect, an embodiment of the present invention is a drive motor, a motor controller including a power component, the power component including a circuit board and a plurality of inductive elements provided on the circuit board, a terminal connector including a mounting portion, a terminal block, and a plurality of magnetic flux permeable members, the terminal block being provided on the mounting portion and including a plurality of connection terminals, the connection terminals including a first connection end and a second connection end, the plurality of magnetic flux permeable members being provided on the mounting portion and corresponding one-to-one to the plurality of connection terminals, the magnetic flux permeable members having a first coupling space and a second coupling space, the connection terminals passing through the corresponding first coupling space, the first connection end and the second connection end extending from the mounting portion respectively, and a plurality of second coupling spaces being provided corresponding to the plurality of inductive elements and located outside the mounting portion, Here, the power component is electrically connected to the drive motor via the terminal block, the inductive element enters the corresponding second coupling space, and there is further provided an electric drive assembly in which the inductive magnetic field generated by the connection terminal acts on the inductive element via the magnetic flux permeable member.

[0024] In the terminal connector and the electric drive assembly of the embodiment of the present invention, the terminal block and the magnetic flux permeable member are provided on the mounting portion, the terminal block has a plurality of connection terminals for transmitting three-phase electricity, and the first connection end and the second connection end of the connection terminal extend from the mounting portion so as to be easily electrically connected to the motor controller and the drive motor respectively. Thereby, when the connection terminal passes through the first coupling space of the magnetic flux permeable member, the inductive magnetic field generated by the connection terminal is coupled to the magnetic flux permeable member. Further, since the second coupling space is provided outside the mounting portion, when the terminal connector is connected to the motor controller, it becomes easy to provide the inductive element inside the second coupling space. Thereby, monitoring of the current in the connection terminal is realized. On the other hand, it further saves the space for directly providing a current sensor on the circuit board. Also, since the terminal block can be directly electrically connected to the power component, it avoids providing a current sensor between the terminal block and the power component and shortens the length of the connection terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The following description of embodiments of the present invention with reference to the drawings will further clarify the above and other objects, features and advantages of the present invention, and the descriptions of each drawing are as follows.

[0026] [Figure 1] This is a schematic diagram of one side of the terminal connector according to an embodiment of the present invention. [Figure 2] This is a schematic diagram of the other side of the terminal connector according to an embodiment of the present invention. [Figure 3] This is a schematic cross-sectional view of a terminal connector according to an embodiment of the present invention. [Figure 4] This is an exploded schematic diagram of one side of the terminal connector according to an embodiment of the present invention. [Figure 5] This is an exploded schematic diagram of the other side of the terminal connector according to an embodiment of the present invention. [Figure 6] This is a schematic diagram of one side of a terminal connector according to an embodiment of the present invention. [Figure 7] This is a schematic diagram of the other side of the terminal connector according to an embodiment of the present invention. [Figure 8] This is a schematic diagram illustrating the positional relationship between the permeable member, the first extension section, and the inductive element in an embodiment of the present invention. [Figure 9] These are schematic cross-sectional views of several embodiments of the terminal connector according to the embodiment of the present invention. [Figure 10] This is a schematic cross-sectional view of several other embodiments of the terminal connector according to the embodiment of the present invention. [Figure 11] This is a schematic diagram illustrating the positional relationship between the bump and the circuit board in an embodiment of the present invention. [Figure 12] This is a schematic circuit diagram of an electric drive assembly according to an embodiment of the present invention. [Modes for carrying out the invention]

[0027] The present invention will be described below based on examples, but the present invention is not limited to these examples. Several specific details will be described in detail in the following description of the details of the present invention. Those skilled in the art will be able to fully understand the present invention without these details. Known methods, processes, procedures, elements and circuits are not described in detail so as not to confuse the substantial content of the present invention.

[0028] Furthermore, as those skilled in the art will understand, the drawings shown here are for illustrative purposes only and are not necessarily drawn to scale.

[0029] Unless otherwise explicitly required by the context, similar words such as "include" and "contain" throughout the application documents should be interpreted as including, but not limited to, rather than as being exclusive or exhaustive.

[0030] In the description of this invention, terms such as "first," "second," etc., are merely for the purpose of explaining the objective and should not be understood as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise specified, "plural" means two or more.

[0031] Unless otherwise explicitly defined or limited, terms such as "attach," "connect," "join," and "fix" should be understood in a broad sense. Unless otherwise explicitly limited, for example, a connection may be fixed, detachably connected, integrally connected, directly connected, or indirectly connected via an intermediate medium, or it may refer to internal communication between two elements or the interaction between two elements. Those skilled in the art will understand the specific meaning of the above terms in this invention depending on the specific situation.

[0032] For ease of explanation, spatial relation terms such as “inside,” “outside,” “below,” “downward,” “below,” “upward,” and “upper” are used herein to describe the relationship between one element or feature shown in the figure and another element or feature. Spatial relation terms are understood to include orientations other than those shown in the figure, including other orientations of the device during use or operation. For example, if the device in the figure is inverted, an element described as “below” or “below” another element or feature will be positioned “upward” of the other element or feature. Thus, the exemplary term “downward” may include both upward and downward orientations. The device may be oriented in other ways (rotated 90 degrees or to other orientations), and the spatial relation descriptive terms used herein should be interpreted accordingly.

[0033] Figures 1 and 2 are schematic diagrams of the structure of the terminal connector in this embodiment.

[0034] In some embodiments, as shown in Figures 1 and 2, the terminal connector in this embodiment includes a mounting portion 1, a terminal block 2, and a plurality of permeable members 3. The terminal block 2 is fixed to the mounting portion 1 together with the permeable members 3. The terminal block 2 includes a plurality of connection terminals 21 that correspond one-to-one with the plurality of permeable members 3. The connection terminals 21 include a first connection end 211 and a second connection end 212, the first connection end 211 and the second connection end 212 extending from the mounting portion 1.

[0035] The first connection terminal 211 is used for electrical connection to the motor controller 9. The second connection terminal 212 is used for electrical connection to the drive motor 8. This enables the motor controller 9 to control the drive motor 8. The material of the connection terminal 21 may be copper, iron, aluminum, or an alloy.

[0036] Figure 3 is a schematic cross-sectional view of the terminal connector of this embodiment. The mounting portion 1 may be constructed as an injection-molded member, and its material may be plastic or rubber, etc.

[0037] Figures 4 and 5 are schematic diagrams of the terminal connector of this embodiment. The terminal connector in the figures includes three connection terminals 21 arranged at intervals. By providing the permeable member 3 and some of the terminal blocks 2 at intervals inside the mounting portion 1, the structure of the terminal connector becomes more compact and the electrical gap between the multiple connection terminals 21 is maintained.

[0038] Figures 6 and 7 are schematic diagrams of the terminal connector of this embodiment. The second connecting end 212 in Figure 6 extends horizontally. In Figure 7, the tip of the first connecting end 211 is designed to be bent upward, and the outline of one permeable member 3 provided inside the mounting portion 1 is shown by a dashed line.

[0039] Figure 8 is a schematic diagram illustrating the positional relationship between the permeable member 3, the first extended section 213, and the inductive element 92 in this embodiment. The outlines of the motor controller 9's circuit board 91 and the inductive element 92 provided on the circuit board 91 are shown by dashed lines in the figure. The spaces above and below the dashed lines are the first coupling space 41 and the second coupling space 42, respectively. The arrows in the figure schematically show the flow of the electromagnetic field in the second coupling space 42.

[0040] In some embodiments, as shown in Figures 7 and 8, the permeable member 3 has a first coupling space 41 and a second coupling space 42, and the connection terminal 21 passes through the corresponding first coupling space 41. An alternating current is transmitted to the connection terminal 21, and this alternating current generates an induced magnetic field near the connection terminal 21. This induced magnetic field can pass through the first coupling space 41 and couple to the permeable member 3. Furthermore, the multiple second coupling spaces 42 are spaced apart and located outside the mounting portion 1 so that after the terminal connector is attached to the motor controller 9, the inductive element 92 can directly enter the inside of the second coupling space 42 and indirectly detect the current in the connection terminal 21. In other words, the induced magnetic field generated by the connection terminal 21 passes through the first coupling space 41 and acts on the second coupling space 42, and then passes through the second coupling space 42 and acts on the inductive element 92.

[0041] Specifically, the inductive element 92 in this embodiment may be a Hall element. The Hall element is provided in the second coupling space 42 and does not directly contact the permeable member 3, and as shown by the arrow in Figure 8, the magnetic field generated in the second coupling space 42 passes through the Hall element. The Hall element, together with the region located in the first coupling space 41 of the circuit board 91, the permeable member 3, and the connection terminal 21, constitutes a Hall current sensor. This current sensor is a non-contact type current sensor.

[0042] As described above, in the terminal connector of this embodiment, the terminal block 2 and the permeable member 3 are provided on the mounting portion 1, the terminal block 2 has a plurality of connection terminals 21 for transmitting three-phase electricity, and the first connection end 211 and the second connection end 212 of the connection terminals 21 extend from the mounting portion 1 so that they can be electrically connected to the motor controller 9 and the drive motor 8, respectively. As a result, the induced magnetic field generated by the connection terminals 21 can be coupled to the permeable member 3 by passing through the first coupling space 41 of the permeable member 3. Furthermore, since the second coupling space 42 is provided on the outside of the mounting portion 1, when the terminal connector is connected to the motor controller 9, it becomes easy to provide the inductive element 92 inside the second coupling space 42. This enables monitoring of the current at the connection terminals 21. On the other hand, it further saves space for directly providing a current sensor on the circuit board 91. Also, since the terminal block 2 can be directly electrically connected to the power component 93, it avoids the need to provide a current sensor between the terminal block 2 and the power component 93, and shortens the length of the conductive passage.

[0043] In some embodiments, as shown in Figures 7 and 8, the permeable member 3 includes two extending ends 31 and a bent section 32 in the extending direction. The bent section 32 is located between the two extending ends 31 and is bent to form a first coupling space 41. The two extending ends 31 extend from the mounting portion 1, and the two extending ends 31 are spaced apart and opposite each other to form a second coupling space 42. In this embodiment, the permeable member 3 is fixed to the mounting portion 1 via the bent section 32.

[0044] Specifically, the permeable member 3 is made of silicon steel. The inductive element 92 is positioned midway between the two extension ends 31, meaning that the inductive element 92 is at the same distance from the two extension ends 31. Furthermore, the bent section 32 encloses the upper and side regions of the connection terminal 21, thereby increasing the coupling strength between the connection terminal 21 and the permeable member 3. The two extension ends 31 can also be equivalent to two plates. The magnetic field between the two plates can pass through the inductive element 92. Those skilled in the art can adjust the coupling strength between the permeable member 3 and the inductive element 92 by changing the distance between the two plates.

[0045] In some embodiments, as shown in Figures 7-8, the bent section 32 includes a first segment 321 and two second segments 322 in the extending direction, the two second segments 322 being connected to both ends of the first segment 321 and perpendicular to the first segment 321. Specifically, one second segment 322 and one extension end 31 extend along the same straight line, and the other second segment 322 and the other extension end 31 extend along the same straight line.

[0046] Figure 9 is a schematic cross-sectional view of several embodiments of the terminal connector of this embodiment. The cross-sectional location in the figure is as shown in section AA in Figure 3, and the filler rubber 51 is not shown in the figure.

[0047] Referring further to Figures 4 and 9, the connection terminal 21 includes a first extending section 213 in the extending direction. The first extending section 213 is located between the first connection end 211 and the second connection end 212 and has a first side surface 2131 and two second side surfaces 2132, the first side surface 2131 having a first coupling slit 411 toward the first segment 321. The two second side surfaces 2132 each have two second coupling slits 412 toward the two second segments 322.

[0048] In this embodiment, the shape of the bent section 32 coincides with the cross-sectional shape of the first extended section 213. The mounting portion 1 fills the area between the bent section 32 and the first extended section 213, ensuring the bonding strength between them while avoiding mutual contact between the connecting terminal 21 and the permeable member 3.

[0049] In some embodiments, as shown in Figure 7, the mounting portion 1 has a first mounting surface 11 and a second mounting surface 12 that extends laterally from the first mounting surface 11, and the first connecting end 211 extends from the first mounting surface 11. Two extending ends 31 of the same permeable member 3 extend from the second mounting surface 12 and a receiving groove is formed with the first mounting surface 11.

[0050] Specifically, in this embodiment, the first mounting surface 11 and the second mounting surface 12 are perpendicular to each other and adjacent to one another. When the first connection terminal 211 is electrically connected to the power component 93, the second mounting surface 12 faces the edge of the circuit board 91, so that the inductive element 92 provided on the circuit board 91 can conveniently enter the housing groove and be coupled with the permeable member 3.

[0051] Selectively, when the terminal connector and the motor controller 9 are connected, the two extension ends 31 contact the circuit board 91, and the housing groove engages with the inductor element 92.

[0052] In some embodiments, as shown in Figures 7 and 8, the mounting portion 1 is an injection-molded member. The bent section 32 and some of the connecting terminals 21 are spaced apart inside the mounting portion 1. In this embodiment, the permeable member 3 and the terminal block 2 are fixed to the mounting portion 1 as inserts, forming a connecting member. Since the connecting member is manufactured by an insert molding process, it has certain electrical characteristics and simplifies the connection method between the terminal connector and the motor controller 9.

[0053] In some embodiments, as shown in Figures 4, 7, and 9, the connector terminal 21 includes a first extending section 213 in the extending direction, the first extending section 213 is located between the first connector end 211 and the second connector end 212, and the first extending section 213 is fixed to the mounting section 1 as an insert. A connecting through-hole 2133 corresponding to the bent section 32 is provided in the first extending section 213, that is, the connecting through-hole 2133 is located inside the first connecting space 41 and is provided toward the first segment 321. The injection-molded member is filled into the connecting through-hole 2133.

[0054] In this embodiment, when the terminal connector is connected between the motor assembly and the motor controller 9, the stress between them acts on the terminal block 2. By providing the injection-molded member with a connection through-hole 2133, the connection strength between the connection terminal 21 and the mounting portion 1 can be increased, and the mounting portion 1 can be prevented from coming off the terminal block 2. On the other hand, in order to ensure the connection strength between the first coupling space 41 and the first extended section 213, the bent section 32 is close to the first extended section 213, so the strength of the mounting portion 1 in that region decreases. For this reason, by providing the connection through-hole 2133 in the first extended section 213, the structural strength of the mounting portion 1 in that region is increased.

[0055] In some embodiments, as shown in Figures 4 to 6, the terminal connector further includes a rubber seal 51 and a magnetic ring 52. The magnetic ring 52 surrounds the terminal block 2 and is spaced apart from the terminal block 2. In this embodiment, the magnetic ring 52 is used to filter common-mode noise interference from the terminal block 2, thereby reducing noise-induced damage to the drive motor 8.

[0056] The mounting portion 1 has a mounting annular groove 13, and a plurality of second connecting ends 212 extend from the center of the mounting annular groove 13. The magnetic ring 52 is provided in the mounting annular groove 13 and forms at least a partial filling gap 6 with the inner wall of the mounting annular groove 13, and the filling rubber 51 is filled into the filling gap 6. Specifically, the material of the magnetic ring 52 is nanocrystalline.

[0057] In this embodiment, it is easily understood that after the filler rubber 51 hardens, it is positioned between the magnetic ring 52 and the inner wall of the mounting annular groove 13. During operation of the electric vehicle, vibrations generated by the vehicle are transmitted to the nanocrystalline magnetic ring 52, causing damage to the nanocrystalline magnetic ring 52. Therefore, by providing the filler rubber 51 between the mounting annular groove 13 and the nanocrystalline magnetic ring 52, the fixing process of the magnetic ring 52 can be simplified, and the filler rubber 51 can absorb vibrations, reducing the impact on the magnetic ring 52.

[0058] In some embodiments, as shown in Figure 6, the mounting annular groove 13 has a first inner surface 131 and a second inner surface 132 facing opposite directions. The first inner surface 131 is closer to the central region of the mounting annular groove 13 than the second inner surface 132.

[0059] Referring further to Figure 9, the magnetic ring 52 is provided with a gap between the first inner surface 131 and the second inner surface 132, forming a first filling gap 61 and a second filling gap 62 with respect to the first inner surface 131 and the second inner surface 132, respectively. As a result, the filling rubber 51 simultaneously fixes the magnetic ring 52 to both the inside and outside of the magnetic ring 52, making it possible to more balance the forces received by the magnetic ring 52 in each direction.

[0060] In some embodiments, as shown in Figures 4 and 5, the terminal connector further includes a cover portion 53. The cover portion 53 covers the mounting annular groove 13 and has a plurality of windows 531, with a plurality of second connection ends 212 extending one-to-one from each of the windows 531. In this embodiment, the cover portion 53 is further fixed in the axial direction of the magnetic ring 52, which can further stabilize the magnetic ring 52. In this form, the cover portion 53 can be fixed to the mounting portion 1 by a filler rubber 51.

[0061] In one selective implementation, the terminal connector in this embodiment can be assembled by the following method. First, the filler rubber 51 is filled into the bottom of the mounting annular groove 13, with the amount of filler controlled to about one-quarter of the volume of the mounting annular groove 13. Next, the magnetic ring 52 is pushed into the mounting annular groove 13 until it contacts the bottom of the mounting annular groove 13 or until the magnetic ring 52 is fully inserted into the mounting annular groove 13 (a gap is maintained between the magnetic ring 52 and the bottom of the mounting annular groove 13). During this process, the magnetic ring 52 presses against the filler rubber 51, causing the filler rubber 51 to flow into the positions of the first and second filler gaps 61 and 62. Subsequently, the operator applies the filler rubber 51 to the end face of the magnetic ring 52 away from the bottom of the mounting annular groove 13, and then covers the mounting annular groove 13 with the lid 53, thereby fixing the lid 53 with the filler rubber 51. Finally, the operator wipes away any excess rubber 51 that has leaked onto the outside of the lid 53, and after the rubber 51 has hardened, the installation of the magnetic ring 52 is complete.

[0062] In some embodiments, as shown in Figures 6 and 9, the mounting portion 1 has a positioning surface 14, and the mounting annular groove 13 is provided surrounding the positioning surface 14. The window edge of the window 531 abuts against the positioning surface 14, and is spaced apart from the window 531 and the corresponding connection terminal 21. A filling groove 54 is formed between the window 531, the positioning surface 14, and the connection terminal 21, and the filling rubber 51 is filled into the filling groove 54.

[0063] In this embodiment, after the lid 53 is placed over the mounting annular groove 13, the operator further secures the lid 53 by filling the groove 54 with the rubber seal 51 again. The rubber seal 51 can also seal the side of the terminal connector closer to the motor assembly, thereby preventing the oil gas in the drive motor 8 from flowing along the terminal block 2 to the side of the terminal connector closer to the motor controller 9.

[0064] Figure 10 is a schematic cross-sectional view of several other embodiments of the terminal connector of this embodiment.

[0065] In some embodiments, as shown in Figures 5 and 6, the mounting portion 1 has a positioning groove 15 surrounding the mounting annular groove 13. Referring further to Figure 10, the cover portion 53 includes a baffle 532, the magnetic ring 52 and the baffle 532 are spaced apart, a third filling gap 63 is formed between the end face of the magnetic ring 52 and the baffle 532, and a fourth filling gap 64 is formed between the window 531 and the corresponding connection terminal 21.

[0066] When the edge of the baffle 532 is positioned in the positioning groove 15, the fourth filling gap 64 communicates with the mounting annular groove 13 via the third filling gap 63, and the filling rubber 51 fills both the third filling gap 63 and the fourth filling gap 64.

[0067] In one selective implementation, the terminal connector in this embodiment can be assembled by the following method. First, the filling rubber 51 is filled into the bottom of the mounting annular groove 13, with the amount of filling controlled to about one-third of the volume of the mounting annular groove 13. Next, the magnetic ring 52 is pushed into the mounting annular groove 13 until it contacts the bottom of the mounting annular groove 13 or until the magnetic ring 52 is completely inside the mounting annular groove 13 (a gap is maintained between the magnetic ring 52 and the bottom of the mounting annular groove 13). During this process, the magnetic ring 52 presses against the filling rubber 51, causing the filling rubber 51 to flow into the first filling gap 61 and the second filling gap 62, and from the first filling gap 61 and the second filling gap 62 into the positioning groove 15. In other words, the magnetic ring 52 is completely immersed in the filling rubber 51. Next, the operator directly places the baffle 532 over the positioning groove 15, at which point the filling rubber 51 is pressed and flows further from the third filling gap 63 into the fourth filling gap 64 (as shown by the arrow in Figure 10, there is a gap between the center of the baffle 532 and the center of the mounting annular groove 13). Finally, the operator wipes away the filling rubber 51 that has flowed out to the outside of the lid 53, and after the filling rubber 51 has hardened, the installation of the magnetic ring 52 is completed. This eliminates the step of filling the filling rubber 51 once.

[0068] In some embodiments, as shown in Figures 4 and 5, the cover 53 further includes a plurality of isolation strips 533 projecting from a surface away from the mounting annular groove 13 of the baffle 532, the isolation strips 533 being located between two windows 531 and having an extension direction perpendicular to the arrangement direction of the plurality of windows 531. Specifically, the connection terminal 21 corresponds to the central region of the isolation strip 533.

[0069] In this embodiment, the isolation strip 533 is used to increase the creepage distance at the cover portion 53 of two adjacent connection terminals 21. Creepage distance refers to the charged region between two conductive components, measured along the insulating surface, where the insulating material becomes charged due to polarization of the insulating material around the conductor. This makes it possible to avoid mutual interference of currents at two adjacent connection terminals 21.

[0070] In some embodiments, as shown in Figure 5, the mounting portion 1 has a plurality of slots 16. Referring further to Figure 4, the cover portion 53 includes a plurality of positioning posts 534, which protrude toward the mounting annular groove 13 of the cover portion 53. When the cover portion 53 is placed over the mounting annular groove 13, the plurality of positioning posts 534 are inserted into the plurality of slots 16 in a one-to-one correspondence. This enables precise positioning of the cover portion 53 and the mounting portion 1.

[0071] Furthermore, the end of the positioning column 534 and the bottom of the slot 16 are spaced apart. This ensures that the baffle 532 can be bonded to the bottom surface of the positioning groove 15. Movement of the cover portion 53 in the mounting portion 1 is avoided before the filling rubber 51 hardens.

[0072] Figure 11 is a schematic diagram illustrating the positional relationship between the bump 18 and the circuit board 91 in this embodiment. The inductive element 92 and the circuit board 91 in the figure are indicated by dashed lines.

[0073] In some embodiments, as shown in Figures 3 and 11, the mounting portion 1 includes a connecting plate 17 and a bump 18. Referring further to Figure 7, the connecting plate 17 has a first plate edge 171 extending in the longitudinal direction of the connecting plate 17. The bump 18 protrudes from one face of the connecting plate 17, and the permeable members 3 are provided on the bump 18 and are spaced apart in the extending direction of the first plate edge 171, with a plurality of the extending ends 31 located between the bump 18 and the first plate edge 171.

[0074] Specifically, in this embodiment, the bump 18 is used to fix the bent section 32. The inductor element 92 is provided at the edge of the circuit board 91. After the terminal connector is connected to the motor controller 9, the edge of the circuit board 91 is adjacent to the first plate edge 171 and below the bump 18. At this time, the housing groove can be provided to cover the inductor element 92, so that the bent section 32 is positioned above the inductor element 92.

[0075] In some embodiments, as shown in Figure 3, the terminal connector further includes two connecting bushings 71. The two connecting bushings 71 are fixed to the connecting plate 17 as inserts and are located on both sides of the bump 18. The connecting bushings 71 may be made of an alloy material, and the connecting bushings 71 have through holes, and when screws pass through the through holes and are connected to the motor assembly or motor controller 9, the two connecting bushings 71 can effectively increase the connection strength and make the connection more stable.

[0076] In some embodiments, as shown in Figure 3, the terminal connector further includes a seal ring 72. The mounting portion 1 further includes a socket 19. The socket 19 protrudes from the surface of the connecting plate 17 away from the bump 18 and has a seal groove 191, the second connecting end 212 extends from the socket 19 and the seal ring 72 is fitted into the seal groove 191. The combination of the seal ring 72 and the seal groove 191 in this embodiment enhances the sealing effect between the terminal connector and the motor assembly, preventing substances such as oil gas from leaking to the outside through the connection point.

[0077] In some embodiments, as shown in Figures 3 and 4, the connection terminal 21 includes a second extending section 214 in the extending direction, the second extending section 214 is located between the second connection end 212 and the mounting portion 1, and the second extending section 214 is made of soft copper. In this embodiment, the second extending section 214 has a certain deformation capacity, and when the connection terminal 21 is fixedly connected between the motor assembly and the drive motor 8, the soft copper material helps in the connection between the second connection end 212 and the connection contact of the motor assembly. It also reduces the stress generated in the connection terminal 21 due to vibrations of the motor assembly itself.

[0078] Selectively, in this embodiment, the second extension section 214 can be connected between the first extension section 213 and the second connecting end 212 by welding, and the first extension section 213, the second connecting end 212, and the first connecting end 211 are all made of hard copper material. This ensures that the connecting terminal 21 still has a certain degree of rigidity.

[0079] Furthermore, the connection terminal 21 has a strip-like structure, and the second extending section 214 has a first extending state and a second extending state. When the second extending section 214 is in the first extending state (Figure 4), the multiple second extending sections 214 bend in the thickness direction of the strip-like structure. This brings the second connection end 212 closer to the connection contact on the motor assembly. When the second extending section 214 is in the second extending state, the degree of bending of the second extending section 214 is smaller than in the first extending state (for example, the second extending section 214 extends in a straight line), making it suitable for passing through the magnetic ring 52.

[0080] The operator can first flatten the second extended section 214 and pass the magnetic ring 52 over the connection terminal 21. After the magnetic ring 52 enters the mounting annular groove 13, the operator can fold the second extended section 214 again. This makes it easier for the magnetic ring 52 to pass over the second connection end 212 and be positioned within the mounting annular groove 13.

[0081] Figure 12 is a schematic circuit diagram of the electric drive assembly in this embodiment.

[0082] In one selective implementation, as shown in Figure 12, the terminal connector in the above embodiment can be applied to an electric drive assembly. The electric drive assembly includes a drive motor 8, a motor controller 9, and a terminal connector. The motor controller 9 includes a power component 93, which includes a circuit board 91 and a plurality of inductive elements 92 provided on the circuit board 91. The power component 93 is electrically connected to the drive motor 8 via the terminal connector to drive the drive motor 8 to rotate.

[0083] Referring further to Figures 1 to 8, the terminal connector includes a mounting portion 1, a terminal block 2, and a plurality of permeable members 3. The terminal block 2 is provided on the mounting portion 1 and includes a plurality of connection terminals 21, each of which includes a first connection end 211 and a second connection end 212, and the plurality of permeable members 3 are provided on the mounting portion 1 and correspond one-to-one with the plurality of connection terminals 21. Specifically, the terminal block 2 includes three connection terminals 21, each of which is used for connection to wiring terminals U, V, and W of the windings of the drive motor 8.

[0084] The permeable member 3 has a first coupling space 41 and a second coupling space 42. The connection terminal 21 passes through the corresponding first coupling space 41, the first connection end 211 and the second connection end 212 extend from the mounting portion 1, and the multiple second coupling spaces 42 are provided corresponding to the multiple inductive elements 92 and are located outside the mounting portion 1. The power component 93 is electrically connected to the drive motor 8 via the terminal block 2, the inductive elements 92 enter the corresponding second coupling spaces 42, and the induced magnetic field generated by the connection terminal 21 acts on the inductive elements 92 via the permeable member 3.

[0085] As described above, in the electric drive assembly of this embodiment, the terminal block 2 of the terminal connector and the permeable member 3 are provided on the mounting part 1, the terminal block 2 has a plurality of connection terminals 21 for transmitting three-phase electricity, and the first connection end 211 and the second connection end 212 of the connection terminals 21 extend from the mounting part 1 so that they can be electrically connected to the motor controller 9 and the drive motor 8, respectively. As a result, the induced magnetic field generated by the connection terminals 21 is coupled to the permeable member 3 as the connection terminals 21 pass through the first coupling space 41 of the permeable member 3. Furthermore, since the second coupling space 42 is provided on the outside of the mounting part 1, when the terminal connector is connected to the motor controller 9, it becomes easy to provide the inductive element 92 inside the second coupling space 42. This enables monitoring of the current at the connection terminals 21. On the other hand, it further saves space for directly providing a current sensor on the circuit board 91. Also, since the terminal block 2 can be directly electrically connected to the power component 93, it avoids providing a current sensor between the terminal block 2 and the power component 93, and shortens the length of the conductive passage.

[0086] In some embodiments, as shown in Figure 7, the side of the two extension ends 31 closest to the first mounting surface 11 has a first side opening 421 located away from the connecting plate 17 of the permeable member 3. The side of the two extension ends 31 away from the second mounting surface 12 has a second side opening 422. During the process of permanently connecting the mounting portion 1 to the motor controller 9, the inductive element 92 enters the housing groove through either the first side opening 421 or the second side opening 422. This prevents interference between the inductive element 92 and the permeable member 3 during mounting.

[0087] Specifically, the first connecting end 211 is bent and has a connecting hole. The axial direction of the connecting hole coincides with the direction of the first side opening 421. A nut may be further provided on the first connecting end 211. When the connecting head of the motor controller 9 is connected to the nut in the axial direction of the connecting hole (arrow a1 in Figures 3 and 11), the inductor element 92 can enter the housing groove from the first side opening 421. This simplifies the connection process between the terminal connector and the motor controller 9.

[0088] The above description is merely a preferred embodiment of the present invention and is not intended to limit it. Those skilled in the art can make various modifications and changes to the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are all within the scope of protection of the present invention. [Explanation of symbols]

[0089] 1. Mounting part 11. First mounting surface 12. Second mounting surface 13. Mounting ring groove 131 1st inner surface 132 Second inner surface 14 Positioning surface 15 Positioning groove 16 slots 17. Connecting plate 171 1st plate edge 18 Bump 19. Implant 191 Seal groove 2 Terminal block 21 Connection terminals 211 First connection end 212 Second connection terminal 213 1st extension section 2131 1st side 2132 Second side 2133 Connection through hole 214 2nd extension section 3 Permeable members 31 Extended end 32. Curved section 321 Segment 1 322 Second Segment 41 1st combination space 411 First bonding slit 412 Second bonding slit 42 Second combination space 421 First side opening 422 Second side opening 51 Filling rubber 52 Magnetic Rings 53 Lid 531 windows 532 Baffle 533 Isolation Strip 534 Positioning column 54 Filling groove 6. Filling gap 61 First filling gap 62. Second filling gap 63 Third filling gap 64. Fourth filling gap 71 Connecting bush 72 Seal rings 8 Drive motor 9. Motor Controller 91 Circuit board 92 Inductors 93 Power Components

Claims

1. Mounting part (1) and A terminal block (2) provided on the mounting portion (1) and including a plurality of connection terminals (21), wherein the terminal block (2) includes a first connection end (211) and a second connection end (212), A plurality of permeable members (3) are provided at intervals on the mounting portion (1) and correspond one-to-one with a plurality of connection terminals (21), wherein each permeable member (3) has a first coupling space (41) and a second coupling space (42), the connection terminal (21) passes through the corresponding first coupling space (41), the first connection end (211) and the second connection end (212) each extend from the mounting portion (1), and a plurality of the second coupling spaces (42) are provided at intervals and located outside the mounting portion (1), including a plurality of permeable members (3), A terminal connector characterized in that the induced magnetic field generated by the connection terminal (21) acts on the second coupling space (42) through the first coupling space (41).

2. The permeable member (3) includes two extending ends (31) and a bent section (32) in the extending direction, the bent section (32) is located between the two extending ends (31) and is bent to form the first coupling space (41), The terminal connector according to claim 1, characterized in that the two extension ends (31) extend from the mounting portion (1), the two extension ends (31) are spaced apart and the opposing sides form the second coupling space (42).

3. The bent section (32) includes a first segment (321) and two second segments (322) in the extending direction, the two second segments (322) being connected to both ends of the first segment (321) and perpendicular to the first segment (321), The terminal connector according to claim 2, wherein the connecting terminal (21) includes in the direction of extension a first extending section (213) located between the first connecting end (211) and the second connecting end (212), the first extending section (213) having a first side surface (2131) and two second side surfaces (2132), the first side surface (2131) having a first coupling slit (411) toward the first segment (321), and the two second side surfaces (2132) each having two second coupling slits (412) toward the two second segments (322).

4. The mounting portion (1) has a first mounting surface (11) and a second mounting surface (12) that extends laterally from the first mounting surface (11), and the first connecting end (211) extends from the first mounting surface (11), The terminal connector according to claim 2, characterized in that the two extended ends (31) of the same permeable member (3) extend from the second mounting surface (12) and have a housing groove formed with the first mounting surface (11).

5. The terminal connector according to claim 2, characterized in that the mounting portion (1) is an injection-molded member, and the bent section (32) and some of the connecting terminals (21) are provided at intervals inside the mounting portion (1).

6. The terminal connector according to claim 5, characterized in that the connecting terminal (21) includes a first extending section (213) in the extending direction, the first extending section (213) is located between the first connecting end (211) and the second connecting end (212) and is fixed to the mounting portion (1) as an insert, a connecting through hole (2133) corresponding to the bending section (32) is provided in the first extending section (213), and the injection molded member is filled into the connecting through hole (2133).

7. Filling rubber (51) and The system further includes a magnetic ring (52) that surrounds the terminal block (2) and is provided at a distance from the terminal block (2), The terminal connector according to claim 1, characterized in that the mounting portion (1) has a mounting annular groove (13), a plurality of second connecting ends (212) extend from the center of the mounting annular groove (13), the magnetic ring (52) is provided in the mounting annular groove (13) and a filling gap (6) is formed between it and the inner wall of the mounting annular groove (13), and the filling rubber (51) is filled into the filling gap (6).

8. The mounting annular groove (13) has a first inner surface (131) and a second inner surface (132) facing opposite directions. The terminal connector according to claim 7, characterized in that the magnetic ring (52) is provided with a gap between the first inner surface (131) and the second inner surface (132), and a first filling gap (61) and a second filling gap (62) are formed between the first inner surface (131) and the second inner surface (132), respectively.

9. The terminal connector according to claim 7, further comprising a cover portion (53) that covers the mounting annular groove (13) and has a plurality of windows (531) opened therein, wherein a plurality of second connection ends (212) each extend from the plurality of windows (531) in a one-to-one correspondence.

10. The mounting portion (1) has a positioning surface (14), and the mounting annular groove (13) is provided surrounding the positioning surface (14). The window edge of the window (531) abuts against the positioning surface (14), and is provided at a distance from the window (531) and the corresponding connection terminal (21), a filling groove (54) is formed between the window (531), the positioning surface (14), and the connection terminal (21), and the filling rubber (51) is filled into the filling groove (54), as described in claim 9.

11. The mounting portion (1) has a positioning groove (15) that surrounds the mounting annular groove (13), The cover portion (53) includes a baffle (532), the magnetic ring (52) and the baffle (532) are spaced apart, a third filling gap (63) is formed between the end face of the magnetic ring (52) and the baffle (532), and a fourth filling gap (64) is formed between the window (531) and the corresponding connection terminal (21). The terminal connector according to claim 9, characterized in that the edge of the baffle (532) is disposed in the positioning groove (15), the fourth filling gap (64) communicates with the mounting annular groove (13) via the third filling gap (63), and the filling rubber (51) fills the third filling gap (63) and the fourth filling gap (64).

12. The terminal connector according to claim 7, characterized in that the material of the magnetic ring (52) is nanocrystalline and the material of the magnetic permeable member (3) is silicon steel.

13. The terminal connector according to claim 11, wherein the cover portion (53) further includes a plurality of isolation strips (533) projecting from the surface of the baffle (532) away from the mounting annular groove (13), the isolation strips (533) being located between the two windows (531) and having an extending direction perpendicular to the arrangement direction of the plurality of windows (531).

14. The mounting portion (1) has a plurality of slots (16), The cover portion (53) includes a plurality of positioning columns (534) protruding from the side of the cover portion (53) toward the mounting annular groove (13), The terminal connector according to claim 9, characterized in that the cover portion (53) is fitted over the mounting annular groove (13), and the plurality of positioning columns (534) are inserted into the plurality of slots (16) in a one-to-one correspondence.

15. The mounting portion (1) includes a connecting plate (17) having a first plate edge (171) and a bump (18), the first plate edge (171) extending in the longitudinal direction of the connecting plate (17), The terminal connector according to claim 5, characterized in that the bump (18) is provided protruding from one surface of the connecting plate (17), the permeable member (3) is provided on the bump (18) and is arranged at intervals in the extending direction of the first plate edge (171), and the plurality of extension ends (31) are located between the bump (18) and the first plate edge (171).

16. The terminal connector according to claim 15, further comprising two connecting bushings (71) fixed to the connecting plate (17) as inserts and located on both sides of the bump (18).

17. Further including a seal ring (72), The aforementioned mounting portion (1) is The terminal connector according to claim 15, further comprising an insertion body (19) protruding from the surface of the connecting plate (17) away from the bump (18) and having a seal groove (191), wherein the second connecting end (212) extends from the insertion body (19) and the seal ring (72) is fitted into the seal groove (191).

18. The terminal connector according to claim 7, characterized in that the connection terminal (21) includes a second extending section (214) located between the second connection end (212) and the mounting portion (1) in the extending direction, and the second extending section (214) is made of soft copper material.

19. The connection terminal (21) has a strip-shaped structure, and the second extended section (214) has a first extended state and a second extended state. The terminal connector according to claim 18, characterized in that in the first extended state, the plurality of second extended sections (214) are bent in the thickness direction of the strip-shaped structure, and in the second extended state, the degree of bending of the second extended sections (214) is smaller than in the first extended state, making it suitable for passing through the magnetic ring (52).

20. Drive motor (8) and A motor controller (9) including a power component (93), wherein the power component (93) includes a circuit board (91) and a plurality of inductive elements (92) provided on the circuit board (91), A terminal connector comprising a mounting portion (1), a terminal block (2), and a plurality of permeable members (3), wherein the terminal block (2) is provided on the mounting portion (1) and includes a plurality of connection terminals (21), each connection terminal (21) includes a first connection end (211) and a second connection end (212), the plurality of permeable members (3) are provided on the mounting portion (1) and correspond one-to-one with the plurality of connection terminals (21), each permeable member (3) has a first coupling space (41) and a second coupling space (42), each connection terminal (21) passes through the corresponding first coupling space (41), the first connection end (211) and the second connection end (212) each extend from the mounting portion (1), and the plurality of second coupling spaces (42) are provided corresponding to the plurality of inductive elements (92) and are located outside the mounting portion (1), An electric drive assembly characterized in that the power component (93) is electrically connected to the drive motor (8) via the terminal block (2), the inductive element (92) enters the corresponding second coupling space (42), and the induced magnetic field generated by the connection terminal (21) acts on the inductive element (92) via the permeable member (3).

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