Terminal connector and electric drive assembly

Abstract

The embodiment of the utility model discloses a terminal connector and an electric drive assembly, a conductive structure and a coupling structure are used as inserts to be arranged in a body, the conductive structure is provided with a plurality of conductive structures used for transmitting three-phase electricity, and a first contact end and a second contact end of a conductive body extend out of the body. Therefore, the motor controller and the driving motor are electrically connected. Therefore, an induced magnetic field generated by the conductor can be transmitted to the first coupling space through the coupling structure. Meanwhile, when the terminal connector is connected with the motor controller, the sensing element is arranged on the inner side of the first coupling space. Therefore, the current on the electric conductor can be monitored. In addition, the arrangement space for directly arranging the current sensor on the circuit board is saved. Meanwhile, the conductive structure can be directly and electrically connected with the power assembly, a current sensor is prevented from being arranged between the conductive structure and the power assembly, and the length of a conductive path is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicles, in particular to a terminal connector and an electric drive assembly. Background Art

[0002] Three-phase alternating current (AC) is a form of electrical energy transmission, often referred to as three-phase electricity. The electric vehicle's motor controller supplies power to the drive motor via a three-phase terminal block. The three-phase terminal block features three terminals for transmitting three-phase power. Effective monitoring of the current flowing through these terminals ensures the motor controller's ability to drive the motor effectively. However, facilitating current monitoring and simplifying the installation structure of the electric drive assembly presents challenges. Utility Model Content

[0003] In view of this, an embodiment of the present invention provides a terminal connector and an electric drive assembly, in which the coupling structure and the conductive structure are arranged together on the main body, thereby utilizing the cooperation between the first coupling space and the sensing element arranged therein to simplify the installation structure of the electric drive assembly and facilitate monitoring of the current.

[0004] According to a first aspect of an embodiment of the utility model, there is provided a terminal connector, the terminal connector comprising:

[0005] The main body is an injection molded part;

[0006] a conductive structure, fixed to the body as an insert and comprising a plurality of conductors, each of which comprises a first contact end and a second contact end; and

[0007] A plurality of coupling structures, fixed to the body as inserts and corresponding to the plurality of the conductors one by one, the coupling structures having a first coupling space, and a first contact end and a second contact end extending from the body respectively;

[0008] The induced magnetic field generated by the conductor is transmitted to the first coupling space through the coupling structure.

[0009] Furthermore, the coupling structure includes two plates and a bending section in the extension direction. The bending section is located between the two plates and is bent to form a second coupling space. The conductor passes through the corresponding second coupling space.

[0010] The two pole plates extend from the body, are spaced apart, and opposite sides of the two pole plates form a first coupling space.

[0011] Furthermore, the curved section includes a first section and two second sections in the extension direction, and the two second sections are connected to both ends of the first section and are perpendicular to the first section;

[0012] The conductor includes a first extension section in the extension direction, the first extension section is located between the first contact end and the second contact end, the first extension section has a first side surface and two second side surfaces, the first side surface faces the first segment and forms a first coupling gap, and the two second side surfaces respectively face the two second segments and form two second coupling gaps.

[0013] Furthermore, the body has a first mounting surface and a second mounting surface facing laterally toward the first mounting surface, and the first contact end extends from the first mounting surface;

[0014] Two plates of the same coupling structure extend from the second mounting surface and form a receiving groove with the first mounting surface.

[0015] Furthermore, the main body is an injection molded part, and the bending section and part of the conductor are arranged at intervals on the inner side of the main body.

[0016] Furthermore, the conductor includes a first extension section in the extension direction, the first extension section is located between the first contact end and the second contact end, and is fixed to the body as an insert, the first extension section is provided with a connecting through hole corresponding to the bending section, and the injection molded part fills the connecting through hole.

[0017] Furthermore, the terminal connector further comprises:

[0018] Filling glue; and

[0019] a magnetic ring surrounding the conductive structure and spaced apart from the conductive structure;

[0020] The body has a mounting ring groove, a plurality of second contact ends extend from the center of the mounting ring groove, the magnetic ring is arranged in the mounting ring groove and forms at least a partial filling gap with the inner wall of the mounting ring groove, and the filling gap is filled with filling glue.

[0021] Furthermore, the mounting ring groove has a first inner side surface and a second inner side surface facing oppositely;

[0022] The magnetic ring is arranged between the first inner side surface and the second inner side surface, and forms a first filling gap and a second filling gap with the first inner side surface and the second inner side surface respectively.

[0023] Furthermore, the terminal connector further comprises:

[0024] The cover part is arranged on the mounting ring groove and has a plurality of windows, and the plurality of second contact ends extend out from the plurality of windows in a one-to-one correspondence.

[0025] Furthermore, the body has a positioning surface, and the mounting ring groove is arranged around the positioning surface;

[0026] The window edge of the window abuts against the positioning surface, the window is spaced apart from the corresponding conductor, a filling groove is formed between the window, the positioning surface and the conductor, and the filling glue fills the filling groove.

[0027] Furthermore, the body has a positioning groove, which is arranged around the mounting ring groove;

[0028] The cover 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 conductor;

[0029] The edge of the baffle is placed on the positioning groove, the fourth filling gap is connected with the mounting ring groove through the third filling gap, and the filling glue fills the third filling gap and the fourth filling gap.

[0030] Furthermore, the material of the magnetic ring is nanocrystalline, and the material of the coupling structure is silicon steel.

[0031] Furthermore, the cover also includes a plurality of isolation strips, which are protruding from the plate surface of the baffle away from the mounting ring groove. The isolation strips are located between the two windows, and the extension direction of the isolation strips is perpendicular to the arrangement direction of the plurality of windows.

[0032] Further, the body has a plurality of slots;

[0033] The cover portion includes a plurality of positioning posts, which are protrudingly arranged on one side of the cover portion facing the mounting ring groove;

[0034] The cover is covered on the mounting ring groove, and the plurality of positioning posts are inserted into the plurality of slots in a one-to-one corresponding manner.

[0035] Furthermore, the body includes a connecting plate and a protrusion, the connecting plate has a first plate edge, and the first plate edge extends along the length direction of the connecting plate;

[0036] The convex block is protruding from a plate surface of the connecting plate, the coupling structure is arranged on the convex block and spaced apart along the extending direction of the first plate edge, and the plurality of pole plates are located between the convex block and the first plate edge.

[0037] Furthermore, the terminal connector further comprises:

[0038] Two connecting bushings are fixed to the connecting plate as inserts and are located on both sides of the projection.

[0039] Furthermore, the terminal connector further includes a sealing ring;

[0040] The body also includes:

[0041] The plug-in body is convexly arranged on the plate surface of the connecting plate away from the protrusion and has a sealing groove. The second contact end extends from the plug-in body, and the sealing ring is sleeved in the sealing groove.

[0042] Furthermore, the conductor includes a second extension section in the extension direction, the second extension section is located between the second contact end and the body, and the second extension section is made of soft copper.

[0043] Furthermore, the conductor is a strip-shaped structure, and the second extension region has a first extension state and a second extension state;

[0044] In the first extension state, the plurality of second extension intervals are bent along the thickness direction of the strip structure. In the second extension state, the bending amplitude of the second extension intervals is smaller than that in the first extension state and is suitable for passing through the magnetic ring.

[0045] In a second aspect, an embodiment of the present invention further provides an electric drive assembly, which includes:

[0046] Drive motor;

[0047] A motor controller includes a power assembly, wherein the power assembly includes a circuit board and a plurality of sensing elements disposed on the circuit board; and

[0048] A terminal connector includes a body, a conductive structure, and a plurality of coupling structures. The conductive structure is disposed on the body and includes a plurality of conductors, each of which includes a first contact end and a second contact end. The plurality of coupling structures are disposed on the body and correspond one-to-one with the plurality of conductors. The coupling structures have a second coupling space and a first coupling space. The conductors pass through the corresponding second coupling spaces, and the first contact end and the second contact end extend from the body, respectively. The plurality of first coupling spaces are disposed corresponding to the plurality of sensing elements and are located outside the body.

[0049] The power component is electrically connected to the drive motor through the conductive structure, and the induction element extends into the corresponding first coupling space. At the same time, the induced magnetic field generated by the conductor acts on the induction element through the coupling structure.

[0050] The terminal connector and electric drive assembly of the embodiment of the utility model are provided with a conductive structure and a coupling structure as inserts in the main body. The conductive structure has a plurality of conductors for transmitting three-phase electricity. The first contact end and the second contact end of the conductor extend from the main body so as to be electrically connected to the motor controller and the drive motor respectively. As a result, the induced magnetic field generated by the conductor can be transmitted to the first coupling space through the coupling structure. At the same time, when the terminal connector is connected to the motor controller, the inductive element is arranged inside the first coupling space. Thus, the current on the conductor is monitored. On the other hand, the space for directly setting the current sensor on the circuit board is saved. At the same time, the conductive structure can be directly electrically connected to the power component, avoiding the need to set the current sensor between the conductive structure and the power component, thereby shortening the length of the conductor. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0052] Figure 1This is a schematic structural diagram of one side of a terminal connector according to an embodiment of the present invention;

[0053] Figure 2 This is a schematic structural diagram of the other side of the terminal connector according to an embodiment of the present invention;

[0054] Figure 3 is a schematic cross-sectional view of a terminal connector according to an embodiment of the present utility model;

[0055] Figure 4 This is an exploded schematic diagram of one side of a terminal connector according to an embodiment of the present invention;

[0056] Figure 5 is an exploded schematic diagram of the other side of the terminal connector according to an embodiment of the present invention;

[0057] Figure 6 It is a partial schematic diagram of one side of the terminal connector of an embodiment of the present utility model;

[0058] Figure 7 It is a partial schematic diagram of the other side of the terminal connector of an embodiment of the present utility model;

[0059] Figure 8 This is a schematic diagram of the positional relationship between the coupling structure, the first extension section, and the sensing element of an embodiment of the present utility model;

[0060] Figure 9 is a schematic cross-sectional view of a terminal connector according to an embodiment of the present invention in some implementations;

[0061] Figure 10 1 is a schematic cross-sectional view of a terminal connector according to another embodiment of the present invention;

[0062] Figure 11 This is the intention of the positional relationship between the bump and the circuit board in the embodiment of the utility model;

[0063] Figure 12 It is a circuit diagram of the electric drive assembly of an embodiment of the present utility model.

[0064] Description of reference numerals:

[0065] 1-Ontology;

[0066] 11-first mounting surface; 12-second mounting surface; 13-mounting ring groove; 131-first inner side surface; 132-second inner side surface; 14-positioning surface; 15-positioning groove; 16-slot; 17-connecting plate; 171-first plate edge; 18-bump; 19-insertion body; 191-sealing groove;

[0067] 2- conductive structure;

[0068] 21 - conductor; 211 - first contact end; 212 - second contact end; 213 - first extension section; 2131 - first side surface; 2132 - second side surface; 2133 - connecting through hole; 214 - second extension section;

[0069] 3-coupling structure;

[0070] 31-plate; 32-bending section; 321-first section; 322-second section;

[0071] 41-second coupling space; 411-first coupling gap; 412-second coupling gap;

[0072] 42-first coupling space; 421-first side opening; 422-second side opening;

[0073] 51-filling glue; 52-magnetic ring; 53-cover; 531-window; 532-baffle; 533-isolation strip; 534-positioning column; 54-filling slot;

[0074] 6-filling gap; 61-first filling gap; 62-second filling gap; 63-third filling gap; 64-fourth filling gap;

[0075] 71-connecting bushing; 72-sealing ring;

[0076] 8- driving motor;

[0077] 9-motor controller; 91-circuit board; 92-sensing element; 93-power component. DETAILED DESCRIPTION

[0078] The present invention is described below based on embodiments, but the present invention is not limited to these embodiments. Certain specific details are described in detail in the detailed description of the present invention below. Those skilled in the art will be able to fully understand the present invention without these details. To avoid obscuring the essence of the present invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0079] Furthermore, persons of ordinary skill in the art will appreciate that the figures provided herein are for illustration purposes only and are not necessarily drawn to scale.

[0080] Unless the context clearly requires otherwise, words like “include”, “comprising” and the like throughout this application should be interpreted as including rather than exclusive or exhaustive; that is, as meaning “including but not limited to”.

[0081] In the description of the present invention, it should be understood that the terms "first," "second," etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0082] Unless otherwise specified or limited, the terms "mounted," "connected," "connect," "fixed," and the like should be interpreted broadly. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0083] For ease of explanation, spatially relative terms such as "in," "out," "under," "below," "lower," "above," "upper," and the like are used herein to describe the relationship of one element or feature illustrated in the figures to another element or feature. It will be understood that spatially relative terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, an element described as being "under" or "beneath" another element or feature would then be positioned "above" the other element or feature. Thus, the example term "under" can encompass both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0084] Figure 1 and Figure 2 2 is a schematic structural diagram of the terminal connector of this embodiment.

[0085] In some embodiments, as Figure 1-Figure 2 As shown, the terminal connector in this embodiment includes a body 1, a conductive structure 2, and multiple coupling structures 3. The conductive structure 2 and the coupling structures 3 are fixed to the body 1. The conductive structure 2 includes multiple conductors 21 corresponding one-to-one with the multiple coupling structures 3. The conductors 21 include a first contact end 211 and a second contact end 212, and the first contact end 211 and the second contact end 212 extend from the body 1.

[0086] The first contact end 211 is used to electrically connect to the motor controller 9. The second contact end 212 is used to electrically connect to the drive motor 8. Thus, the motor controller 9 can control the drive motor 8. The material of the conductor 21 can be copper, iron, aluminum, or alloy.

[0087] Figure 32 is a schematic cross-sectional view of the terminal connector of this embodiment. The body 1 can be configured as an injection molded part, and its material can be plastic or rubber.

[0088] Figure 4 and Figure 5 This is an exploded schematic diagram of the terminal connector of this embodiment. The terminal connector includes three conductors 21 arranged in an interval. The coupling structure 3 and the partially conductive structure 2 are spaced apart inside the body 1, making the terminal connector more compact and maintaining electrical clearances between the multiple conductors 21.

[0089] Figure 6 and Figure 7 FIG. 1 is a partial schematic diagram of the terminal connector of this embodiment. Figure 6 The second contact end 212 extends horizontally. Figure 7 The head of the first contact end 211 is bent upward, and the outline of a coupling structure 3 arranged on the inner side of the body 1 is shown by a dotted line.

[0090] Figure 8 This is a schematic diagram of the positional relationship between the coupling structure 3, the first extension section 213, and the inductive element 92 of this embodiment. The outlines of the circuit board 91 of the motor controller 9 and the inductive element 92 disposed thereon are shown with dashed lines. The spaces above and below the dashed lines are the second coupling space 41 and the first coupling space 42, respectively. The arrows in the figure indicate the flow of the electromagnetic field in the first coupling space 42.

[0091] In some embodiments, as Figure 7-Figure 8 As shown, the coupling structure 3 has a second coupling space 41 and a first coupling space 42, and the conductor 21 passes through the corresponding second coupling space 41. When alternating current is transmitted on the conductor 21, the alternating current generates an induced magnetic field near the conductor 21, and the induced magnetic field can be coupled to the coupling structure 3 through the second coupling space 41. At the same time, multiple first coupling spaces 42 are arranged at intervals and located on the outside of the body 1, so that after the terminal connector is installed on the motor controller 9, the sensing element 92 can directly extend into the inside of the first coupling space 42, thereby indirectly detecting the current in the conductor 21. In other words, the induced magnetic field generated by the conductor 21 acts on the first coupling space 42 through the second coupling space 41, and acts on the sensing element 92 through the first coupling space 42.

[0092] Specifically, the sensing element 92 in this embodiment may be a Hall element. The Hall element is disposed in the first coupling space 42 and does not directly contact the coupling structure 3. Figure 8As shown by the arrows in FIG, the magnetic field generated by the first coupling space 42 passes through the Hall element. The Hall element, together with the circuit board 91, the coupling structure 3, and the conductor 21 in the area of ​​the second coupling space 41, forms a Hall current sensor. This current sensor is a contactless current sensor.

[0093] In summary, the terminal connector in this embodiment incorporates a conductive structure 2 and a coupling structure 3 disposed within a body 1. The conductive structure 2 comprises multiple conductive structures 2 for transmitting three-phase electricity. The first contact end 211 and the second contact end 212 of the conductor 21 extend from the body 1 to facilitate electrical connection to the motor controller 9 and the drive motor 8, respectively. Thus, the conductor 21 is passed through the second coupling space 41 of the coupling structure 3, allowing the induced magnetic field generated by the conductor 21 to couple to the coupling structure 3. Simultaneously, the first coupling space 42 is disposed outside the body 1, facilitating placement of the sensing element 92 within the first coupling space 42 when the terminal connector is connected to the motor controller 9. This allows monitoring of the current flowing through the conductor 21. Furthermore, this also reduces the space required to directly position a current sensor on the circuit board 91. Furthermore, the conductive structure 2 can be directly electrically connected to the power component 93, eliminating the need for a current sensor between the conductive structure 2 and the power component 93 and shortening the length of the conductive path.

[0094] In some embodiments, as Figure 7-Figure 8 As shown, the coupling structure 3 includes two plates 31 and a curved section 32 along its extension direction. The curved section 32 is located between the two plates 31 and curves to form a second coupling space 41. The two plates 31 extend from the body 1, spaced apart and forming the first coupling space 42 on opposite sides. In this embodiment, the coupling structure 3 is fixed to the body 1 via the curved section 32.

[0095] Specifically, the coupling structure 3 is made of silicon steel. The sensing element 92 is positioned midway between the two plates 31, meaning that the sensing element 92 is equidistant from both plates 31. Furthermore, the curved section 32 surrounds the upper region and both sides of the conductor 21, thereby increasing the coupling strength between the conductor 21 and the coupling structure 3. The magnetic field between the two plates 31 can pass through the sensing element 92. Those skilled in the art can adjust the coupling strength between the coupling structure 3 and the sensing element 92 by varying the distance between the two plates 31.

[0096] In some embodiments, as Figure 7-Figure 8 As shown, the curved section 32 includes a first section 321 and two second sections 322 in the extension direction. The two second sections 322 are connected to both ends of the first section 321 and are perpendicular to the first section 321. Specifically, one first section 321 and one electrode plate 31 extend along the same straight line, and the other second section 322 and the other electrode plate 31 extend along the same straight line.

[0097] Figure 9 : is a schematic cross-sectional view of the terminal connector of this embodiment in some embodiments. Figure 3 As shown at AA in FIG, the filling glue 51 is not shown in the figure.

[0098] Further reference Figure 4 and Figure 9 As shown, the conductor 21 includes a first extension section 213 along the extension direction. The first extension section 213 is located between the first contact end 211 and the second contact end 212. The first extension section 213 has a first side surface 2131 and two second side surfaces 2132. The first side surface 2131 faces the first segment 321 and forms a first coupling gap 411. The two second side surfaces 2132 face the two second segments 322, respectively, and form two second coupling gaps 412.

[0099] The shape of the curved section 32 in this embodiment matches the cross-sectional shape of the first extension section 213. The body 1 fills the area between the curved section 32 and the first extension section 213 to ensure the coupling strength between them while preventing the conductor 21 and the coupling structure 3 from contacting each other.

[0100] In some embodiments, as Figure 7 As shown, the body 1 has a first mounting surface 11 and a second mounting surface 12 facing the first mounting surface 11, and the first contact end 211 extends from the first mounting surface 11. The two plates 31 of the same coupling structure 3 extend from the second mounting surface 12 and form a receiving groove with the first mounting surface 11.

[0101] Specifically, in this embodiment, the first mounting surface 11 and the second mounting surface 12 are perpendicular to each other and arranged adjacent to each other. When the first contact end 211 is electrically connected to the power component 93, the second mounting surface 12 faces the edge of the circuit board 91, allowing the sensing element 92 disposed on the circuit board 91 to fit neatly into the receiving groove and thereby couple with the coupling structure 3.

[0102] Optionally, when the terminal connector is in a connected state with the motor controller 9 , the two electrode plates 31 abut against the circuit board 91 , so that the accommodating groove is buckled on the sensing element 92 .

[0103] In some embodiments, as Figure 7-Figure 8 As shown, the body 1 is an injection-molded component. The curved section 32 and a portion of the conductor 21 are spaced apart on the inner side of the body 1. In this embodiment, the coupling structure 3 and the conductive structure 2 are fixed to the body 1 as inserts to form a connecting member. This connecting member is manufactured using an insert molding process, which provides certain electrical properties and simplifies the connection between the terminal connector and the motor controller 9.

[0104] In some embodiments, as Figure 4 、 Figure 7 and Figure 9 As shown, the conductor 21 includes a first extension section 213 along its extension direction. The first extension section 213 is located between the first contact end 211 and the second contact end 212, and is fixed to the body 1 as an insert. The first extension section 213 defines a connecting through-hole 2133 corresponding to the curved section 32. In other words, the connecting through-hole 2133 is located inside the second coupling space 41 and is disposed toward the first section 321. The injection molded part fills the connecting through-hole 2133.

[0105] In this embodiment, when the terminal connector is connected between the motor assembly and the motor controller 9, stress between the two acts on the conductive structure 2. By providing a connecting through-hole 2133 in the injection molded part, the connection strength between the conductor 21 and the body 1 can be increased, preventing the conductive structure 2 from loosening on the body 1. Furthermore, to ensure the coupling strength between the second coupling space 41 and the first extension section 213, the curved section 32 is relatively close to the first extension section 213, which reduces the strength of the body 1 in this area. Therefore, providing a connecting through-hole 2133 in the first extension section 213 increases the structural strength of the body 1 in this area.

[0106] In some embodiments, as Figure 4-Figure 6 As shown, the terminal connector further includes a filler 51 and a magnetic ring 52. The magnetic ring 52 surrounds the conductive structure 2 and is spaced apart from the conductive structure 2. The magnetic ring 52 in this embodiment is used to filter common-mode noise interference from the conductive structure 2, thereby reducing damage to the drive motor 8 caused by the noise.

[0107] The body 1 has a mounting groove 13, with a plurality of second contact ends 212 extending from the center of the mounting groove 13. The magnetic ring 52 is disposed in the mounting groove 13 and forms at least a partially filled gap 6 with the inner wall of the mounting groove 13. The gap 6 is filled with a filler 51. Specifically, the magnetic ring 52 is made of nanocrystalline material.

[0108] It is easy to understand that after the filler glue 51 in this embodiment cures, it is located between the magnetic ring 52 and the inner wall of the mounting ring groove 13. During driving, the vibrations generated by the electric vehicle can be transmitted to the nanocrystalline magnetic ring 52, causing damage to the nanocrystalline magnetic ring 52. Therefore, by providing the filler glue 51 between the mounting ring groove 13 and the nanocrystalline magnetic ring 52, the process of securing the magnetic ring 52 is simplified and the filler glue 51 can absorb vibrations, reducing the impact on the magnetic ring 52.

[0109] In some embodiments, as Figure 6As shown, the mounting groove 13 has a first inner side surface 131 and a second inner side surface 132 facing opposite directions. The first inner side surface 131 is closer to the center area of ​​the mounting groove 13 than the second inner side surface 132.

[0110] Further reference Figure 9 As shown, the magnetic ring 52 is spaced between the first inner side surface 131 and the second inner side surface 132, and forms a first filling gap 61 and a second filling gap 62 with the first inner side surface 131 and the second inner side surface 132, respectively. Therefore, the filling glue 51 can fix the magnetic ring 52 on both the inner and outer sides of the magnetic ring 52, so that the force applied to the magnetic ring 52 in all directions is more balanced.

[0111] In some embodiments, as Figure 4-Figure 5 As shown, the terminal connector further includes a cover portion 53. The cover portion 53 covers the mounting ring groove 13 and defines a plurality of windows 531. The plurality of second contact ends 212 extend through the windows 531 in a one-to-one correspondence. In this embodiment, the cover portion 53 further secures the magnetic ring 52 in the axial direction, making the magnetic ring 52 more stable. In this embodiment, the cover portion 53 can be fixed to the body 1 using a filler 51.

[0112] In an optional implementation, the terminal connector in this embodiment can be assembled as follows: First, fill the bottom of the mounting ring groove 13 with filler glue 51, and the filling amount can be controlled to be approximately one-quarter of the volume of the mounting ring groove 13. Next, press the magnetic ring 52 into the mounting ring groove 13 until the magnetic ring 52 abuts the bottom of the mounting ring groove 13, or the magnetic ring 52 completely enters the mounting ring groove 13 (a gap is maintained between the magnetic ring 52 and the bottom of the mounting ring groove 13). During this process, the magnetic ring 52 squeezes the filler glue 51, causing the filler glue 51 to flow to the first filling gap 61 and the second filling gap 62. Next, the operator applies filler glue 51 to the end surface of the magnetic ring 52 away from the bottom of the mounting ring groove 13, and then covers the mounting ring groove 13 with the filler glue 51 to secure the cover 53. Finally, the operator wipes off the filler glue 51 that has flowed out of the cover 53. After the filler glue 51 solidifies, the installation of the magnetic ring 52 is completed.

[0113] In some embodiments, as Figure 6 and Figure 9 As shown, the body 1 has a positioning surface 14, and the mounting ring groove 13 is arranged around the positioning surface 14. The window edge of the window 531 abuts the positioning surface 14, and the window 531 is spaced apart from the corresponding conductor 21. A filling groove 54 is formed between the window 531, the positioning surface 14, and the conductor 21, and the filling glue 51 fills the filling groove 54.

[0114] In this embodiment, after the cover 53 is placed in the mounting ring groove 13, the operator refills the filling glue 51 into the filling groove 54 to further secure the cover 53. The filling glue 51 also seals the side of the terminal connector near the motor assembly, preventing oil and gas from the drive motor 8 from flowing along the conductive structure 2 to the side of the terminal connector near the motor controller 9.

[0115] Figure 10 2 is a schematic cross-sectional view of the terminal connector of this embodiment in other implementations.

[0116] In some embodiments, as Figure 5 and Figure 6 As shown, the body 1 has a positioning groove 15, and the positioning groove 15 is arranged around the mounting ring groove 13. Figure 10 As shown, the cover 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 surface of the magnetic ring 52 and the baffle 532 , and a fourth filling gap 64 is formed between the window 531 and the corresponding conductor 21 .

[0117] When the edge of the baffle 532 is placed on the positioning groove 15 , the fourth filling gap 64 is connected to the mounting ring groove 13 through the third filling gap 63 , and the filling glue 51 fills the third filling gap 63 and the fourth filling gap 64 .

[0118] In an optional implementation, the terminal connector in this embodiment can be assembled in the following manner. First, the filling glue 51 is filled to the bottom of the mounting ring groove 13, and the filling amount can be controlled to be about one-third of the volume of the mounting ring groove 13. Secondly, the magnetic ring 52 is pressed into the mounting ring groove 13 until the magnetic ring 52 abuts against the bottom of the mounting ring groove 13, or the magnetic ring 52 completely enters the mounting ring groove 13 (a gap is maintained between the magnetic ring 52 and the bottom of the mounting ring groove 13). During this process, the magnetic ring 52 will squeeze the filling glue 51, causing the filling glue 51 to flow to the first filling gap 61 and the second filling gap 62, and flow from the first filling gap 61 and the second filling gap 62 to the positioning groove 15. That is, the magnetic ring 52 is completely immersed in the filling glue 51. Secondly, the operator directly covers the baffle 532 on the positioning groove 15. At this time, the filling glue 51 is squeezed, forcing it to flow further from the third filling gap 63 to the fourth filling gap 64 (such as Figure 10 As shown by the arrow in FIG, the baffle 532 is spaced apart from the center of the mounting ring groove 13. Finally, the operator wipes off the filling glue 51 that has flowed out of the cover 53. After the filling glue 51 solidifies, the magnetic ring 52 is installed. This can save the process of filling the filling glue 51 once.

[0119] In some embodiments, as Figure 4 and Figure 5 As shown, the cover 53 further includes a plurality of isolation bars 533, which are protruding from the surface of the baffle 532 away from the mounting ring groove 13. The isolation bars 533 are located between the two windows 531, and the extension direction of the isolation bars 533 is perpendicular to the arrangement direction of the plurality of windows 531. Specifically, the conductor 21 corresponds to the center area of ​​the isolation bars 533.

[0120] The isolation strips 533 in this embodiment are used to increase the creepage distance between two adjacent conductors 21 on the cover 53. Creepage distance refers to the charged area between two conductive parts, measured along the insulating surface. This distance is caused by the polarization of the insulating material surrounding the conductors, resulting in the insulating material becoming charged. This prevents mutual interference between the currents of the two adjacent conductors 21.

[0121] In some embodiments, as Figure 5 As shown, the body 1 has a plurality of slots 16. Figure 4 As shown, the cover 53 includes a plurality of positioning posts 534, which are protruding from the side of the cover 53 facing the mounting groove 13. When the cover 53 is placed on the mounting groove 13, the positioning posts 534 are inserted into the plurality of slots 16 in a one-to-one correspondence, thereby achieving precise positioning of the cover 53 and the body 1.

[0122] Furthermore, the end of the positioning post 534 is spaced apart from the bottom of the slot 16. This ensures that the baffle 532 can fit the bottom surface of the positioning groove 15. Before the filling glue 51 is cured, the cover 53 is prevented from moving on the body 1.

[0123] Figure 11 This is a schematic diagram of the positional relationship between the bump 18 and the circuit board 91 of this embodiment. The sensing element 92 and the circuit board 91 in the figure are shown with dot-dash lines.

[0124] In some embodiments, as Figure 3 and Figure 11 As shown, the body 1 includes a connecting plate 17 and a protrusion 18. Figure 7 As shown, the connecting plate 17 has a first plate edge 171 that extends along the length of the connecting plate 17. A protrusion 18 is protruding from one surface of the connecting plate 17. The coupling structures 3 are disposed on the protrusion 18 and are arranged at intervals along the extension direction of the first plate edge 171. The plurality of electrode plates 31 are located between the protrusion 18 and the first plate edge 171.

[0125] Specifically, the protrusion 18 in this embodiment is used to secure the bending section 32. The sensing element 92 is disposed at the edge of the circuit board 91. When the terminal connector is connected to the motor controller 9, the edge of the circuit board 91 is adjacent to the first board edge 171 and below the protrusion 18. In this case, the receiving groove can cover the sensing element 92, so that the bending section 32 is located just above the sensing element 92.

[0126] In some embodiments, as Figure 3 As shown, the terminal connector also 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 protrusion 18. The connecting bushings 71 can be made of an alloy and have through holes. When screws pass through the through holes to connect to the motor assembly or motor controller 9, the two connecting bushings 71 can effectively improve the connection strength and make the connection more stable.

[0127] In some embodiments, as Figure 3 As shown, the terminal connector also includes a sealing ring 72. The main body 1 also includes a plug-in body 19. The plug-in body 19 is protruding from the surface of the connecting plate 17 facing away from the protrusion 18 and has a sealing groove 191. The second contact end 212 extends from the plug-in body 19, and the sealing ring 72 is sleeved in the sealing groove 191. The combination of the sealing ring 72 and the sealing groove 191 in this embodiment can enhance the sealing effect between the terminal connector and the motor assembly, preventing substances such as oil and gas from leaking out through the connection point.

[0128] In some embodiments, as Figure 3-Figure 4 As shown, the conductor 21 includes a second extension section 214 along its extension direction. This second extension section 214 is located between the second contact end 212 and the body 1 and is made of soft copper. In this embodiment, the second extension section 214 has a certain degree of deformability. When the conductor 21 is fixedly connected between the motor assembly and the drive motor 8, the soft copper material facilitates connection between the second contact end 212 and the connecting contacts of the motor assembly. It also reduces stress on the conductor 21 caused by vibration of the motor assembly.

[0129] Optionally, the second extension section 214 of this embodiment can be connected between the first extension section 213 and the second contact end 212 by welding, and the first extension section 213, the second contact end 212, and the first contact end 211 are all made of hard copper, thereby ensuring that the conductor 21 still has a certain degree of rigidity.

[0130] Furthermore, the conductor 21 is a strip-shaped structure, and the second extension section 214 has a first extension state and a second extension state. When the second extension section 214 is in the first extension state (eg Figure 4As shown, multiple second extension sections 214 are curved along the thickness of the strip-shaped structure. This allows the second contact end 212 to be closer to the connection contact on the motor assembly. When the second extension sections 214 are in the second extended state, the curvature of the second extension sections 214 is smaller than in the first extended state (for example, the second extension sections 214 extend in a straight line), and are suitable for passing through the magnetic ring 52.

[0131] The operator can first flatten the second extension section 214 to allow the conductor 21 to pass through the magnetic ring 52. After the magnetic ring 52 enters the mounting groove 13, the operator can bend the second extension section 214 again to facilitate the magnetic ring 52 passing through the second contact end 212 and being installed in the mounting groove 13.

[0132] Figure 12 Schematic diagram of the circuit of the electric drive assembly of this embodiment.

[0133] In an optional implementation, if Figure 12 As shown, 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 assembly 93, which includes a circuit board 91 and a plurality of sensing elements 92 disposed on the circuit board 91. The power assembly 93 is electrically connected to the drive motor 8 via the terminal connector to drive the drive motor 8 to rotate.

[0134] Further reference Figures 1-8 As shown, the terminal connector includes a body 1, a conductive structure 2, and multiple coupling structures 3. The conductive structure 2 is disposed on the body 1 and includes multiple conductors 21, each of which includes a first contact end 211 and a second contact end 212. The multiple coupling structures 3 are disposed on the body 1 and correspond one-to-one with the multiple conductors 21. Specifically, the conductive structure 2 includes three conductors 21, which are respectively used to connect to the connection terminal U, the connection terminal V, and the connection terminal W of the winding of the drive motor 8.

[0135] The coupling structure 3 has a second coupling space 41 and a first coupling space 42. The conductor 21 passes through the corresponding second coupling space 41, and the first contact end 211 and the second contact end 212 extend from the body 1. Multiple first coupling spaces 42 are arranged corresponding to multiple sensing elements 92 and are located outside the body 1. The power assembly 93 is electrically connected to the drive motor 8 through the conductive structure 2, and the sensing elements 92 extend into the corresponding first coupling space 42. Simultaneously, the induced magnetic field generated by the conductor 21 acts on the sensing elements 92 through the coupling structure 3.

[0136] In summary, the electric drive assembly of this embodiment incorporates the conductive structure 2 and coupling structure 3 of the terminal connector within the body 1. The conductive structure 2 comprises multiple conductive structures 2 for transmitting three-phase electricity. The first contact end 211 and the second contact end 212 of the conductor 21 extend from the body 1 to facilitate electrical connection to the motor controller 9 and the drive motor 8, respectively. Thus, the conductor 21 passes through the second coupling space 41 of the coupling structure 3, allowing the induced magnetic field generated by the conductor 21 to couple to the coupling structure 3. Simultaneously, the first coupling space 42 is positioned outside the body 1, facilitating placement of the sensing element 92 within the first coupling space 42 when the terminal connector is connected to the motor controller 9. This allows monitoring of the current flowing through the conductor 21. Furthermore, this reduces the space required to directly position a current sensor on the circuit board 91. Furthermore, the conductive structure 2 can be directly electrically connected to the power module 93, eliminating the need for a current sensor between the conductive structure 2 and the power module 93 and shortening the conductive path length.

[0137] In some embodiments, as Figure 7 As shown, the two electrode plates 31 have a first side opening 421 on the side closest to the first mounting surface 11. The first side opening 421 is located on the side of the coupling structure 3 away from the connecting plate 17. The two electrode plates 31 have a second side opening 422 on the side away from the second mounting surface 12. When the body 1 is fixedly connected to the motor controller 9, the sensing element 92 enters the receiving groove through the first side opening 421 or the second side opening 422. This prevents interference between the sensing element 92 and the coupling structure 3 during installation.

[0138] Specifically, the first contact end 211 is bent and provided with a connecting hole. The axial direction of the connecting hole is consistent with the direction of the first side opening 421. A nut can also be provided on the first contact end 211. When the connector on the motor controller 9 is connected to the nut along the axial direction of the connecting hole (such as Figure 3 and Figure 11 As shown by arrow a1 in FIG, the sensing element 92 can enter the accommodating groove from the first side opening 421. This simplifies the connection process between the terminal connector and the motor controller 9.

[0139] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to fall within the scope of protection of the present invention.

Claims

1. A terminal connector, characterized in that: The terminal connector includes: The body (1) is an injection molded part; A conductive structure (2) is fixed to the body (1) as an insert and includes a plurality of conductors (21), wherein the conductors (21) include a first contact end (211) and a second contact end (212); and A plurality of coupling structures (3) are fixed to the body (1) as inserts and correspond one-to-one to the plurality of conductors (21), the coupling structures (3) having a first coupling space (42), the first contact end (211) and the second contact end (212) respectively extending from the body (1); The induced magnetic field generated by the conductor (21) is transmitted to the first coupling space (42) through the coupling structure (3).

2. The terminal connector according to claim 1, wherein: The coupling structure (3) comprises two pole plates (31) and a bending section (32) in an extending direction; the bending section (32) is located between the two pole plates (31) and is bent to form a second coupling space (41); the conductor (21) passes through the corresponding second coupling space (41); The two pole plates (31) extend from the body (1), and the two pole plates (31) are spaced apart and the first coupling space (42) is formed on opposite sides.

3. The terminal connector according to claim 2, wherein: The bending section (32) includes a first section (321) and two second sections (322) in the extension direction, and the two second sections (322) are connected to both ends of the first section (321) and are perpendicular to the first section (321); The conductor (21) includes a first extension section (213) in the extension direction, the first extension section (213) is located between the first contact end (211) and the second contact end (212), the first extension section (213) has a first side surface (2131) and two second side surfaces (2132), the first side surface (2131) faces the first segment (321) and forms a first coupling gap (411), and the two second side surfaces (2132) respectively face the two second segments (322) and form two second coupling gaps (412).

4. The terminal connector according to claim 2, wherein: The body (1) has a first mounting surface (11) and a second mounting surface (12) facing the first mounting surface (11), and the first contact end (211) extends from the first mounting surface (11); The two pole plates (31) of the same coupling structure (3) extend from the second mounting surface (12) and form a receiving groove with the first mounting surface (11).

5. The terminal connector according to claim 2, wherein: The body (1) is an injection molded part, and the bending section (32) and part of the conductor (21) are arranged at intervals on the inner side of the body (1).

6. The terminal connector according to claim 5, wherein: The conductor (21) includes a first extension section (213) in the extension direction. The first extension section (213) is located between the first contact end (211) and the second contact end (212) and is fixed to the body (1) as an insert. The first extension section (213) is provided with a connecting through hole (2133) corresponding to the bending section (32), and the injection molded part fills the connecting through hole (2133).

7. The terminal connector according to any one of claims 1 to 6, characterized in that: The terminal connector further includes: Filling glue (51); and a magnetic ring (52) surrounding the conductive structure (2) and spaced apart from the conductive structure (2); The body (1) has a mounting ring groove (13), a plurality of second contact ends (212) extend from the center of the mounting ring groove (13), the magnetic ring (52) is arranged in the mounting ring groove (13) and forms at least a partial filling gap (6) with the inner wall of the mounting ring groove (13), and the filling glue (51) fills the filling gap (6).

8. The terminal connector according to claim 7, wherein: The mounting ring groove (13) has a first inner side surface (131) and a second inner side surface (132) facing opposite directions; The magnetic ring (52) is spaced apart between the first inner side surface (131) and the second inner side surface (132), and forms a first filling gap (61) and a second filling gap (62) with the first inner side surface (131) and the second inner side surface (132), respectively.

9. The terminal connector according to claim 7, wherein: The terminal connector further includes: The cover portion (53) is arranged on the mounting ring groove (13) and has a plurality of windows (531), and the plurality of second contact ends (212) extend out from the plurality of windows (531) in a one-to-one correspondence.

10. The terminal connector according to claim 9, wherein: The body (1) has a positioning surface (14), and the mounting ring groove (13) is arranged around the positioning surface (14); The window edge of the window (531) abuts against the positioning surface (14), the window (531) and the corresponding conductor (21) are spaced apart, a filling groove (54) is formed between the window (531), the positioning surface (14) and the conductor (21), and the filling glue (51) fills the filling groove (54).

11. The terminal connector according to claim 9, wherein: The body (1) has a positioning groove (15), and the positioning groove (15) is arranged around the mounting ring groove (13); The cover (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 surface of the magnetic ring (52) and the baffle (532), and a fourth filling gap (64) is formed between the window (531) and the corresponding conductor (21); The edge of the baffle (532) is placed on the positioning groove (15), the fourth filling gap (64) is connected to the mounting ring groove (13) through the third filling gap (63), and the filling glue (51) fills the third filling gap (63) and the fourth filling gap (64).

12. The terminal connector according to claim 7, wherein: The material of the magnetic ring (52) is nanocrystalline, and the material of the coupling structure (3) is silicon steel.

13. The terminal connector according to claim 11, wherein: The cover portion (53) further comprises a plurality of isolation strips (533), wherein the isolation strips (533) are protruding from the plate surface of the baffle (532) away from the mounting ring groove (13), the isolation strips (533) are located between the two windows (531), and the extension direction of the isolation strips (533) is perpendicular to the arrangement direction of the plurality of windows (531).

14. The terminal connector according to claim 9, wherein The body (1) has a plurality of slots (16); The cover portion (53) includes a plurality of positioning posts (534), and the plurality of positioning posts (534) are protrudingly provided on a side of the cover portion (53) facing the mounting ring groove (13); The cover portion (53) is covered on the mounting ring groove (13), and the plurality of positioning posts (534) are inserted into the plurality of slots (16) in a one-to-one correspondence.

15. The terminal connector according to claim 5, wherein The body (1) comprises a connecting plate (17) and a protrusion (18), wherein the connecting plate (17) has a first plate edge (171), and the first plate edge (171) extends along the length direction of the connecting plate (17); The protrusion (18) is protruding from a plate surface of the connecting plate (17); the coupling structure (3) is arranged on the protrusion (18) and is arranged at intervals along the extension direction of the first plate edge (171); and the plurality of pole plates (31) are located between the protrusion (18) and the first plate edge (171).

16. The terminal connector according to claim 15, wherein: The terminal connector further includes: Two connecting bushings (71) are fixed to the connecting plate (17) as inserts and are located on both sides of the protrusion (18).

17. The terminal connector according to claim 15, wherein: The terminal connector further includes a sealing ring (72); The body (1) further comprises: The plug-in body (19) is protruding from the plate surface of the connecting plate (17) away from the protrusion (18) and has a sealing groove (191). The second contact end (212) extends from the plug-in body (19), and the sealing ring (72) is sleeved in the sealing groove (191).

18. The terminal connector according to claim 7, wherein: The conductor (21) comprises a second extension section (214) in the extension direction, the second extension section (214) is located between the second contact end (212) and the body (1), and the second extension section (214) is made of soft copper.

19. The terminal connector according to claim 18, wherein: The conductor (21) is a strip-shaped structure, and the second extension section (214) has a first extension state and a second extension state; In the first extension state, a plurality of the second extension intervals (214) are bent along the thickness direction of the strip structure. In the second extension state, the bending amplitude of the second extension intervals (214) is smaller than that in the first extension state and is suitable for passing through the magnetic ring (52).

20. An electric drive assembly, characterized in that: The electric drive assembly includes: Drive motor (8); A motor controller (9) includes a power component (93), wherein the power component (93) includes a circuit board (91) and a plurality of sensing elements (92) disposed on the circuit board (91); and A terminal connector comprises a body (1), a conductive structure (2) and a plurality of coupling structures (3), wherein the conductive structure (2) is arranged on the body (1) and comprises a plurality of conductors (21), the conductors (21) comprising a first contact end (211) and a second contact end (212), a plurality of coupling structures (3) are arranged on the body (1) and correspond one-to-one with the plurality of conductors (21), the coupling structure (3) has a first coupling space (42), the first contact end (211) and the second contact end (212) respectively extend from the body (1), and a plurality of the first coupling spaces (42) are arranged corresponding to a plurality of the sensing elements (92); The power component (93) is electrically connected to the drive motor (8) through the conductive structure (2), and the induction element (92) extends into the corresponding first coupling space (42), while the induced magnetic field generated by the conductor (21) acts on the induction element (92) through the coupling structure (3).

Images