Wire holder, motor and vehicle

Abstract

The utility model discloses a wire holder, a motor and a vehicle. The wire holder is used for communicating a first connecting terminal and a second connecting terminal, the wire holder comprises a holder body, conductive pieces, a first terminal and a second terminal, the first terminal is used for being connected with the first connecting terminal, the second terminal is used for being connected with the second connecting terminal, the holder body is made of insulating materials, and the conductive pieces are wrapped by the holder body. The two ends of each conductive piece are connected with the first terminal and the second terminal respectively. Wherein the second terminal comprises a flexible section, the flexible section is formed by laminating a plurality of conductive foils, the flexible section can be deformed to enable the wire holder to move relative to the second connecting terminal, and the wire holder can realize fine adjustment, is convenient to assemble and has better assembly manufacturability.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a terminal block, a motor, and a vehicle. Background Technology

[0002] With the development of new energy technologies, new energy vehicles have gained increasing popularity among consumers. As a key electrical component of the power system of new energy vehicles, the motor terminal block's main function is to connect and fix the motor to the controller and facilitate energy transmission. During the manufacturing process of new energy vehicles, the terminal block is typically fixed to the motor housing and rigidly connected to the motor stator terminals. If there are manufacturing errors or assembly errors during assembly, the motor's connection terminals and the terminal block's connection terminals may not align, making assembly impossible or inconvenient. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a terminal block that enables micro-adjustment, facilitates assembly, and has better assembly processability.

[0004] This utility model also proposes a motor having the above-mentioned terminal block.

[0005] This utility model also proposes a vehicle having the above-mentioned motor.

[0006] According to a first aspect of the present invention, a terminal block is used to connect a first connecting terminal and a second connecting terminal. The terminal block includes a base, conductive elements, a first terminal and a second terminal. The first terminal is used to connect to the first connecting terminal, and the second terminal is used to connect to the second connecting terminal. The base is made of insulating material. Each conductive element is covered by the base and the conductive elements are spaced apart. The two ends of each conductive element are respectively connected to the first terminal and the second terminal.

[0007] The second terminal includes a flexible segment formed by stacking multiple conductive foils, which is deformable to allow the terminal block to move relative to the second connection terminal.

[0008] The terminal block according to the embodiment of this utility model has at least the following beneficial effects:

[0009] The terminal block of this application achieves a flexible connection with the motor stator. Under the premise of satisfying energy transmission, compared with the rigid connection in the prior art, the terminal block of this application can achieve micro-adjustment, has better assembly processability, can eliminate stress caused by manufacturing and assembly, and can prevent the terminal block terminals from breaking or the stator solder joints from breaking due to shear force due to vibration failure, thus giving the motor a longer service life.

[0010] According to some embodiments of the present invention, the second terminal further includes a connecting segment connected to the conductive element and a wiring segment for connecting to the second connecting terminal, wherein both ends of each conductive foil are respectively connected to the connecting segment and the wiring segment.

[0011] According to some embodiments of the present invention, the flexible segment includes a plurality of bends, each of which is smoothly connected, so that the connecting segment and the wiring segment are spaced apart along a first direction, and the wiring segment can be driven to move closer to or away from the connecting segment along the first direction.

[0012] According to some embodiments of the present invention, the connection between the connecting segment and the flexible segment is covered by the seat body.

[0013] According to some embodiments of the present invention, the number of conductive elements is M, the number of first terminals and the number of second terminals are M, where M is a positive integer greater than or equal to 2, each of the first terminals is arranged sequentially along a first direction, and the terminal block also has a first plane arranged perpendicular to the first direction, and the second terminals are distributed on the first plane.

[0014] According to some embodiments of the present invention, the base includes an input main branch, multiple output branches, and a transition portion, wherein the transition portion is connected to the input main branch and each of the output branches respectively; wherein each of the conductive elements includes an input segment and an output segment, each of the input segments extends parallel to each other in the input main branch, each of the conductive elements is bent in the transition portion to extend along the corresponding output branch, and at least one output segment is provided in each of the output branches.

[0015] According to a second aspect of the present invention, the motor includes a housing and a terminal block as described in any of the above embodiments, the terminal block being connected to the housing.

[0016] According to some embodiments of the present invention, the housing includes an electrical control cavity for accommodating an electrical control component. The electrical control cavity has a first mounting hole, and the terminal block is partially disposed through the first mounting hole so that the first terminal is inserted into the electrical control cavity. Corresponding to the edge position of the first mounting hole, the terminal block is provided with a sealing element.

[0017] According to some embodiments of the present invention, the base of the terminal block has a stop that blocks the first mounting hole, and the terminal block further includes a shielding ring, which is sleeved on the stop.

[0018] According to a third aspect of the present invention, the vehicle includes the motor mentioned in the above embodiments.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a schematic diagram of the terminal block structure according to an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the terminal block according to an embodiment of the present utility model (the base body is hidden);

[0023] Figure 3 This is a schematic diagram of the structure of the base body according to an embodiment of the present utility model;

[0024] Figure 4 This is another angle view of the terminal block according to an embodiment of the present utility model;

[0025] Figure 5 This is another angle view of the terminal block according to an embodiment of the present utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the second terminal in an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the positioning component according to an embodiment of the present utility model;

[0028] Figure 8 This is a schematic diagram of the sealing element according to an embodiment of the present invention.

[0029] Figure label:

[0030] Base 100; Input main branch 110; Output branch 120; Adapter 130; Stop 140; Groove 150; Second mounting hole 160;

[0031] Conductive component 200; Second conductive component 202; Input segment 210; Output segment 220;

[0032] First terminal 300;

[0033] Second terminal 400; connecting section 410; flexible section 420; bending part 421; wiring section 430;

[0034] Seal 500; Protrusion 510;

[0035] Shielding ring 600;

[0036] Positioning component 700; Anti-rotation part 710; Positioning part 720; Detailed Implementation

[0037] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0038] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0040] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0041] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] With the development of new energy technologies, new energy vehicles have gained increasing popularity among consumers. As a key electrical component of the power system of new energy vehicles, the motor terminal block's main function is to connect and fix the motor to the controller and facilitate energy transmission. During the manufacturing process of new energy vehicles, the terminal block is typically fixed to the motor housing and rigidly connected to the motor stator terminals. If there are manufacturing errors or assembly errors during assembly, the motor's connection terminals and the terminal block's connection terminals may not align, making assembly impossible or inconvenient.

[0043] In addition, if the connection terminals of the motor and the connection terminals of the terminal block are rigidly connected, the connection terminals of the motor and the connection terminals of the terminal block will be subjected to vibration and impact when the vehicle encounters bumpy and vibrating road conditions during driving. This can cause the connection terminals to deform or be damaged, which in turn can lead to poor terminal contact or vibration breakage.

[0044] To address the aforementioned problems, a first aspect of this application provides a terminal block for connecting a first connecting terminal and a second connecting terminal, enabling electrical conductivity between the two terminals. In this embodiment, the first connecting terminal is a connecting terminal of a motor stator, and the second connecting terminal is a connecting terminal of an electronic control component. When the first and second connecting terminals are electrically connected, energy transfer is possible. In other embodiments, the first and second connecting terminals may also be connecting terminals of other electrical components.

[0045] like Figures 1 to 4 As shown, the terminal block includes a base 100, conductive elements 200, a first terminal 300, and a second terminal 400. The base 100 is made of insulating materials such as plastic, and has characteristics such as non-conductivity and good strength. Each conductive element 200 is covered by the base 100, and the conductive elements 200 are spaced apart and not interconnected. Figure 2 In the illustrated embodiment, there are four conductive elements 200, used for conducting the U, V, W, and X phase circuits respectively. The conductive elements 200 are made of metallic conductive materials, commonly copper or silver. Preferably, in this embodiment, the conductive elements 200 are made of copper. The base 100 is injection molded onto the outer periphery of each conductive element 200 and covers the conductive elements 200, so that the conductive elements 200 are embedded inside the base 100. The conductive elements 200 are not interconnected to avoid short circuits.

[0046] The two ends of the conductive element 200 are connected to the first terminal 300 and the second terminal 400, respectively. The first terminal 300 is used to connect to the wiring terminals of the electronic control element, and the second terminal 400 is used to connect to the wiring terminals of the motor stator. Figure 2 As shown, the first terminal 300 is a crimped nut, which is crimped to the conductive component 200. The crimped nut can be threaded to screws or other structural components to fix the terminal head. The second terminal 400 has a round hole. When connecting to the terminal of the motor stator, a bolt is used to pass through the round hole, and the terminal of the motor stator is crimped to the second terminal 400 of the terminal block through a threaded connection to make surface contact. It can be understood that the structure of the first terminal 300 and the second terminal 400 is not fixed, as long as a reliable connection with the external terminal is achieved. That is, the first terminal 300 can also be a round hole structure, crimped by an external bolt, or the first terminal 300 can be partly a crimped nut structure and partly a round hole structure.

[0047] It should be noted that, such as Figure 4 and Figure 6 As shown, the second terminal 400 includes a flexible segment 420, which is deformable and conductive. When the second terminal 400 is subjected to an external driving force, the flexible segment 420 can deform to move the terminal block relative to the second connection terminal. Specifically, as... Figure 4 For example, during assembly, if the second terminal 400 and the motor stator terminals cannot be aligned due to manufacturing errors, the second terminal 400 can be pulled to slightly deform the flexible section 420, thereby eliminating the misalignment caused by manufacturing errors and facilitating assembly. As another example, during vehicle operation, when encountering bumpy road sections, the vibration between the motor and the terminal block can be absorbed by the flexible section 420 to prevent fatigue failure of the motor and terminal block due to long-term vibration.

[0048] Furthermore, the flexible segment 420 is formed by stacking multiple conductive foils, such as... Figure 6 In the illustrated embodiment, the conductive foil is copper foil, which possesses good ductility, flexibility, and conductivity. Multiple strips of copper foil are stacked together using a specific process, and the two ends of the stack are fixed together to form a stacked flexible copper busbar structure. In this structure, the two ends of the copper busbar are rigidly connected, while the middle portion remains flexible, allowing for arbitrary bending and twisting. The flexible connection in the middle effectively counteracts the adverse effects of vibration during vehicle operation, protecting the motor and terminal block from damage and improving overall vehicle safety. Furthermore, the stacked flexible copper busbar has excellent conductivity, ensuring a convenient and reliable conductive connection between the motor and terminal block.

[0049] In some embodiments, the second terminal 400 may be entirely composed of flexible segments 420, with the two ends of the flexible segments 420 fixed together by pressure welding or other means to form an integral structure. The flexible segments 420 are then connected to the second connecting terminal and the conductive element 200, respectively. In other embodiments, the conductive foils may not be interconnected. The second terminal 400 may also include connecting segments 410 and wiring segments 430 disposed at both ends of the conductive foils. The two ends of the conductive foils are welded to the connecting segments 410 and wiring segments 430, respectively. The various conductive foils are connected via the connecting segments 410 and wiring segments 430 to form an integral structure.

[0050] Based on the above, the terminal block of this application achieves a flexible connection with the motor stator. Under the premise of satisfying energy transmission, compared with the rigid connection in the prior art, the terminal block of this application can achieve micro-adjustment, has better assembly processability, can eliminate stress caused by manufacturing and assembly, and can prevent vibration failure from causing terminal block breakage or stator solder joint breakage due to shear force, thus giving the motor a longer service life.

[0051] In some embodiments, the second terminal 400 further includes a connection segment 410 and a wiring segment 430, such as Figure 2 , Figure 3 and Figure 6 As shown, the connecting section 410, flexible section 420, and wiring section 430 of the second terminal 400 are connected sequentially. The second terminal 400 is connected to the conductive element 200 via the connecting section 410 and to the second connecting terminal via the wiring section 430. It is understood that the connecting section 410 and the conductive element 200 can be connected by welding or other fixed methods. Figures 1 to 3 In the embodiment shown, the connection between the connecting segment 410 and the conductive element 200 is covered by the base 100 to enhance the stability of the connection between the connecting segment 410 and the conductive element 200.

[0052] Furthermore, the flexible segment 420 includes at least one bend 421, and the number of bends 421 can be one, two, or more. The connecting segment 430 is movable relative to the connecting segment 410 to increase or decrease the bending angle of the bend 421. Figure 4 and Figure 6 In the illustrated embodiment, there are three bends 421. Through the bending and turning of these three bends 421, the connecting segment 410 and the flexible segment 420 are spaced apart along the first direction, allowing the wiring segment 430 to move closer to or further away from the connecting segment 410 along the first direction, thus providing greater adjustment freedom. Figure 6In the illustrated embodiment, the bend 421 smoothly transitions to the connecting segment 410, the wiring segment 430, and between the two bends 421, defining a U-shaped bend structure between the connecting segment 410 and the wiring segment 430. It is understood that in other embodiments, the number of bends 421 may be five, seven, or other similar, resulting in multiple U-shaped bend structures between the wiring segment 430 and the connecting segment 410, allowing for greater movement of the wiring segment 430 and the connecting segment 410 along the first direction.

[0053] In some embodiments, the number of conductive elements 200 is M, and the number of first terminals 300 and second terminals 400 is also M, where M is a positive integer greater than or equal to 2. The number of conductive elements 200 needs to be set according to the requirements of the motor circuit. For example, in a three-phase motor, at least three-phase circuits of U, V, and W should be provided, and correspondingly, the number of conductive elements 200, first terminals 300, and second terminals 400 should be at least three. In this embodiment, an X-phase circuit is also provided, and the number of conductive elements 200, first terminals 300, and second terminals 400 is four.

[0054] like Figure 4 As shown, the first terminals 300 are arranged sequentially along a first direction, and the terminal block also has a first plane perpendicular to the first direction. The second terminals 400 are distributed on the first plane. When the terminal block is assembled onto the motor, the first terminals 300 are inserted into the electrical control cavity, and the second terminals 400 are distributed on the wall of the motor housing. The portion of the terminal block exposed outside the motor housing is small, and it fits closely to the wall of the motor housing, reducing the space occupied by the terminal block and providing good adaptability.

[0055] More specifically, the base 100 includes an input main branch 110, multiple output branches 120, and a transition section 130, such as... Figure 1 and Figure 4 As shown, each first terminal 300 is sequentially arranged on the input main branch 110 along a first direction, and each second terminal 400 is arranged on each output branch 120. A single output branch 120 can have one second terminal 400, or it can have two, three, or other numbers of output terminals, depending on the position and number of the second connection terminals. Each output branch 120 extends in different directions, but all are located within the first plane. The adapter 130 connects to the input main branch 110 and the multiple output branches 120 respectively, serving as an adapter. The conductive element 200 includes an input segment 210 and an output segment 220. Each input segment 210 extends parallel and side-by-side in the input main branch 110. Each conductive element 200 bends at the adapter 130 to extend along the corresponding output branch 120. Each output branch 120 has at least one output segment 220.

[0056] For example Figure 2 Taking the orientation shown as an example, for easy distinction, each conductive element 200 is named as the first conductive element, the second conductive element 202, the third conductive element, and the fourth conductive element, respectively, from top to bottom at the input segment 210. Each conductive element 200 extends parallel in the left-right direction. The second conductive element 202 bends at the transition part 130, first extending towards the front end, then bending downwards, and then extending towards the rear end, so as to bypass each input segment 210 to form the output segment 220.

[0057] A second aspect of this application also provides an electric motor, which includes a housing (not shown) and a terminal block mentioned in any of the above embodiments, the terminal block being connected to the housing. The housing includes an electrical control cavity for accommodating electrical control components and a motor cavity for accommodating the motor, the terminal block being disposed at the interface between the electrical control cavity and the motor cavity. The electrical control cavity has a first mounting hole communicating with the motor cavity, the terminal block portion being located in the motor cavity, a second terminal 400 being connected to the wiring terminals of the motor stator, and the terminal block portion being disposed through the first mounting hole so that the first terminal 300 is inserted into the electrical control cavity and connected to the wiring terminals of the electrical control components. The terminal block can close the first mounting hole to isolate the electrical control cavity and the motor cavity, thereby reducing electromagnetic interference between the motor cavity and the electrical control cavity.

[0058] Specifically, such as Figure 3 , Figure 5 and Figure 8 As shown, corresponding to the edge of the first mounting hole, a groove 150 is provided on the surface of the seat 100 that fits against the housing. A sealing element 500 is provided in the groove 150. The sealing element 500 is a multi-lip sealing ring, partially protruding from the surface of the terminal block to abut against the motor housing and enhance the sealing effect. The outer periphery of the sealing element 500 is provided with circumferentially distributed protrusions 510, which can elastically deform during the process of embedding into the groove 150 to fix the sealing element 500 in the groove 150.

[0059] In addition, such as Figure 3 and Figure 5 As shown, the terminal block's base 100 is defined by a stop 140. When the terminal block's input main branch 110 is inserted into the electrical control cavity, the stop 140 is located in the first mounting hole, blocking and sealing the first mounting hole to reduce electromagnetic interference in the motor cavity and electrical control cavity. To further improve the electromagnetic shielding effect, the terminal block also includes a shielding ring 600, which is fitted onto the stop 140. The shielding ring 600 is made of metal and can effectively block the penetration of electromagnetic fields in the electrical control cavity and the motor cavity. Through the strong reflection and absorption of the shielding ring 600, most interference signals are shielded and cannot affect the internal circuitry. This not only ensures the purity and integrity of the signals inside the motor but also greatly improves the reliability and stability of signal transmission, ensuring that the motor can operate continuously and accurately.

[0060] The terminal block is connected to the motor housing via positioning element 700, such as... Figure 3 and Figure 7 As shown, the terminal block has a second mounting hole 160, and the housing has a corresponding third mounting hole. The positioning member 700 includes an anti-rotation part 710 and a positioning part 720. The positioning part 720 passes through the second mounting hole 160 and is embedded in the third mounting hole to complete the positioning and limiting of the terminal block and the housing. The outer peripheral surface of the anti-rotation part 710 is provided with uneven toothed grooves. The second mounting hole 160 is a stepped hole, and its stepped surface is provided with corresponding toothed groove structures, so that it can engage with the anti-rotation part 710 to limit the rotation of the positioning member 700.

[0061] The third aspect of this application proposes a vehicle including the aforementioned motor. It is understood that the vehicle can be a purely electric vehicle with at least one drive motor for driving the vehicle's movement; alternatively, the vehicle can be a hybrid vehicle, a range-extended vehicle, etc. The vehicle can be a private car, such as a sedan, SUV, MPV, or pickup truck. The vehicle can also be a commercial vehicle, such as a van, bus, small truck, or large trailer.

[0062] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A terminal block for connecting a first connecting terminal and a second connecting terminal, characterized in that, The device includes a base, conductive elements, a first terminal, and a second terminal. The first terminal is used to connect to a first connecting terminal, and the second terminal is used to connect to a second connecting terminal. The base is made of insulating material, and each conductive element is covered by the base and is spaced apart. The two ends of each conductive element are connected to the first terminal and the second terminal, respectively. The second terminal includes a flexible segment formed by stacking multiple conductive foils, which is deformable to allow the terminal block to move relative to the second connection terminal.

2. The terminal block according to claim 1, characterized in that, The second terminal further includes a connecting segment connected to the conductive element and a wiring segment for connecting to the second connecting terminal, wherein both ends of each conductive foil are respectively connected to the connecting segment and the wiring segment.

3. The terminal block according to claim 2, characterized in that, The flexible segment includes multiple bends, each bend being smoothly connected, so that the connecting segment and the wiring segment are spaced apart along a first direction, and the wiring segment can be driven to move closer to or further away from the connecting segment along the first direction.

4. The terminal block according to claim 2, characterized in that, The connection between the connecting segment and the flexible segment is covered by the seat body.

5. The terminal block according to claim 1, characterized in that, The number of conductive components is M, and the number of the first terminal and the number of the second terminal are M, where M is a positive integer greater than or equal to 2. Each of the first terminals is arranged sequentially along a first direction. The terminal block also has a first plane arranged perpendicular to the first direction, and the second terminals are distributed on the first plane.

6. The terminal block according to claim 5, characterized in that, The base includes an input main branch, multiple output branches, and a transition section. The transition section is connected to the input main branch and each of the output branches. Each conductive element includes an input segment and an output segment. Each input segment extends parallel to each other in the input main branch. Each conductive element is bent at the transition section to extend along the corresponding output branch. Each output branch has at least one output segment.

7. An electric motor, characterized in that, It includes a housing and a terminal block as described in any one of claims 1 to 6, the terminal block being connected to the housing.

8. The motor according to claim 7, characterized in that, The housing includes an electrical control cavity for accommodating an electrical control component. The electrical control cavity has a first mounting hole. The terminal block portion passes through the first mounting hole to allow the first terminal to be inserted into the electrical control cavity. Corresponding to the edge position of the first mounting hole, the terminal block is provided with a sealing element.

9. The motor according to claim 8, characterized in that, The base of the terminal block is defined with a stop that blocks the first mounting hole, and the terminal block also includes a shielding ring, which is sleeved on the stop.

10. A vehicle, characterized in that, Includes the motor as described in any one of claims 7 to 9.

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