Motor busbar, motor assembly and vehicle

Abstract

The utility model provides a motor busbar, a motor assembly and a vehicle, and relates to the technical field of vehicle parts, the motor busbar comprises a busbar body and a temperature detection device fixing structure, and the temperature detection device fixing structure is arranged at one end, close to a stator core, of the busbar body. The busbar body is provided with a temperature detection device fixing structure, the temperature detection device fixing structure and the busbar body are of an integrated structure, a mounting groove is formed in the surface, facing the stator winding and corresponding to the coil, of the temperature detection device fixing structure, the mounting groove is used for mounting the temperature detection device, and the temperature detection device fixing structure is used for pressing the temperature detection device on the corresponding coil. The temperature detection device is pressed on a corresponding coil of the stator winding through the temperature detection device fixing structure, so that the temperature detection device is fixedly installed. Moreover, the temperature detection device fixing structure and the busbar body are designed into an integrated structure, so that the number of parts can be reduced, the installation cost of the temperature detection device is reduced, and the fixing reliability of the temperature detection device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle parts, and in particular to a motor bus, a motor assembly and a vehicle. Background Art

[0002] Motors generate heat during operation. To ensure the stator windings remain within a safe temperature range and prevent damage due to overheating, temperature sensors are typically installed to monitor the stator winding temperature in real time. Existing temperature sensors are typically installed in two ways: using binding wire to secure the sensor to the stator winding coils, or using a spring-loaded mounting bracket to secure the sensor to the stator winding coils. Both methods require additional fixings, resulting in a large number of components, complex installation, and high costs. Utility Model Content

[0003] The utility model aims to solve the technical problems of complicated installation and high cost of the existing temperature sensor for detecting the temperature of the stator winding.

[0004] In the first aspect, the utility model provides a motor busbar, which is used to be installed at one end of the stator core of the motor and is used to be connected to the stator winding of the motor, including a busbar body and a temperature detection device fixing structure. The temperature detection device fixing structure is arranged at one end of the busbar body close to the stator core, and the temperature detection device fixing structure and the busbar body are an integrated structure. The temperature detection device fixing structure is provided with an installation groove on a side facing the corresponding coil of the stator winding, the installation groove is used to install the temperature detection device, and the temperature detection device fixing structure is used to press the temperature detection device onto the corresponding coil.

[0005] Optionally, a through hole communicating with the mounting slot is provided on the busbar body, and the through hole extends in the same direction as the mounting slot, for the temperature detection device to pass through.

[0006] Optionally, the mounting groove is used to accommodate the heat-sensing component of the temperature detection device, the groove wall of the mounting groove at one end away from the through hole is used to abut against one end of the heat-sensing component, and a limiting protrusion is provided at the end of the mounting groove close to the through hole, and the limiting protrusion is used to abut against the other end of the heat-sensing component.

[0007] Optionally, the temperature detection device fixing structure is arranged near the circumferential outer edge of the bus body, and the temperature detection device fixing structure is used to be located on the outside of the coil of the outermost layer of the stator winding, and the temperature detection device fixing structure is provided with the mounting groove on the side facing the outermost coil.

[0008] Optionally, the motor bus further includes a spring sheet, which is placed in the mounting groove.

[0009] Optionally, the elastic piece includes an elastic piece body, and the elastic piece body protrudes toward a notch close to the mounting slot to form an elastic protrusion.

[0010] Optionally, the elastic piece further includes a connecting piece, one end of the connecting piece is connected to the elastic protrusion, and the other end of the connecting piece is inclined toward a notch close to the mounting slot.

[0011] Optionally, the spring piece, the temperature detection device fixing structure and the busbar body are integrally injection molded.

[0012] In the second aspect, the utility model proposes a motor assembly, including a stator core, a stator winding, a temperature detection device and the above-mentioned motor bus, wherein the motor bus is arranged at one end of the stator core and connected to the stator winding, and the temperature detection device is provided in the mounting groove of the temperature detection device fixing structure of the motor bus, and the temperature detection device fixing structure presses the temperature detection device onto the corresponding coil of the stator winding.

[0013] In a third aspect, the present invention provides a vehicle comprising the above-mentioned motor assembly.

[0014] The motor bus, motor assembly, and vehicle of the present invention have at least the following advantages over the prior art:

[0015] A temperature detection device fixing structure is provided at one end of the busbar body close to the stator core, that is, the temperature detection device fixing structure is closer to the coil of the stator winding, which is conducive to the temperature detection device assembled on the temperature detection device fixing structure to be in large-area contact with the coil; a mounting groove is provided on one side of the temperature detection device fixing structure close to the corresponding coil of the stator winding, and the mounting groove can accommodate and install the temperature detection device to ensure the assembly stability and reliability of the temperature detection device. Moreover, when the temperature detection device is installed in the mounting groove, the temperature detection device can be in contact with the corresponding coil of the stator winding through the notch of the mounting groove. Then, when the busbar body is installed on the stator winding, the temperature detection device fixing structure can be used to press the temperature detection device onto the corresponding coil of the stator winding, that is, the fixed installation of the temperature detection device is realized, which facilitates the use of the temperature detection device to detect the temperature of the stator winding in real time; and, compared with fixing the temperature detection device to the coil of the stator winding with an additional fixing piece, designing the temperature detection device fixing structure and the busbar body as an integrated structure can reduce the number of components, reduce the installation cost of the temperature detection device, and improve the fixing reliability of the temperature detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a motor assembly according to an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the installation structure of the motor bus and the temperature detection device according to an embodiment of the utility model;

[0018] Figure 3 This is a partial schematic diagram of the installation structure of the motor bus and the temperature detection device according to an embodiment of the present utility model;

[0019] Figure 4 A cross-sectional view of the installation structure of the motor bus, temperature detection device and coil according to an embodiment of the present utility model;

[0020] Figure 5 A partial schematic diagram of a motor busbar according to an embodiment of the present invention;

[0021] Figure 6 This is a schematic structural diagram of a spring piece according to an embodiment of the present invention.

[0022] Description of reference numerals:

[0023] 1. Busbar body; 11. Through hole; 2. Temperature detection device fixing structure; 21. Mounting slot; 211. Limiting protrusion; 3. Spring clip; 31. Spring clip body; 311. Elastic protrusion; 32. Connecting piece; 4. Stator core; 5. Stator winding; 51. Coil; 6. Temperature detection device; 61. Thermal element; 62. Lead wire. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] In the description of this utility model, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "matched" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integral connection; they may refer to direct connection, indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0026] In addition, it should be noted that in the description of the present invention, it should be noted that the terminology in each embodiment, such as "upper", "lower", "front", "back" and other words indicating direction, are only for simplifying the description of the positional relationship based on the drawings in the specification, and do not mean that the components and devices referred to must be operated in accordance with the specific directions and defined operations and methods and structures in the specification. Such directional nouns do not constitute a limitation on the present invention.

[0027] This document establishes a Z-axis. The Z-axis represents the up-down direction, with the positive Z-axis representing upward and the negative Z-axis representing downward. It should also be noted that the aforementioned Z-axis designation is intended solely for the purpose of facilitating and simplifying the description of the present invention, and does not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, it should not be construed as limiting the present invention.

[0028] like Figure 1-Figure 5 As shown, a motor busbar of an embodiment of the present invention is used to be installed at one end of the stator core 4 of the motor and to be connected to the stator winding 5 of the motor, including a busbar body 1 and a temperature detection device fixing structure 2. The temperature detection device fixing structure 2 is arranged at one end of the busbar body 1 close to the stator core 4, and the temperature detection device fixing structure 2 and the busbar body 1 are an integrated structure. The temperature detection device fixing structure 2 is provided with an installation groove 21 on a side facing the corresponding coil 51 of the stator winding 5. The installation groove 21 is used to install the temperature detection device 6, and the temperature detection device fixing structure 2 is used to press the temperature detection device 6 onto the corresponding coil 51.

[0029] Specifically, taking the stator core 4 as an example, with its central axis along the Z-axis, the motor busbar is typically located above or below the stator core 4. For ease of description, the following description uses the motor busbar located above the stator core 4 as an example. The stator winding 5 includes a plurality of coils 51 connected in sequence. Each coil 51 is located within a corresponding stator slot of the stator core 4. The leads of the coils 51 extend upward out of the slots, and the motor busbar is used to connect to the leads of the coils 51. A temperature detection device fixing structure 2 is provided at one end of the busbar body 1, proximal to the stator core 4, i.e., at the lower end of the busbar body 1. The temperature detection device fixing structure 2 can extend generally along the Z-axis. The busbar body 1 generally has a circular ring or arc-shaped structure surrounding the coils 51 of the stator winding 5. A mounting groove 21 is provided on the side of the temperature detection device fixing structure 2 facing the corresponding coil 51 of the stator winding 5, i.e., on the side of the temperature detection device fixing structure 2 facing the central axis of the stator winding 5.

[0030] Since the pins of the coil 51 are arranged vertically upward, the installation groove 21 can extend vertically so that the temperature detection device 6 in the installation groove 21 can contact the pins of the coil 51 over a larger area through the groove, and the side of the temperature detection device 6 facing away from the coil 51 can contact the bottom of the groove.

[0031] In this embodiment, a temperature detection device fixing structure 2 is provided at one end of the busbar body 1 close to the stator core 4, that is, the temperature detection device fixing structure 2 is closer to the coil 51 of the stator winding 5, which is conducive to the temperature detection device 6 assembled on the temperature detection device fixing structure 2 to be able to make large-area contact with the coil 51; the temperature detection device fixing structure 2 is provided with a mounting groove 21 on one side corresponding to the coil 51 of the stator winding 5, and the mounting groove 21 can accommodate and install the temperature detection device 6 to ensure the assembly stability and reliability of the temperature detection device 6, and when the temperature detection device 6 is installed in the mounting groove 21, the temperature detection device 6 can pass through the groove of the mounting groove 21. The opening contacts the corresponding coil 51 of the stator winding 5, and then when the bus body 1 is installed on the stator winding 5, the temperature detection device fixing structure 2 can be used to press the temperature detection device 6 onto the corresponding coil 51 of the stator winding 5, that is, the fixed installation of the temperature detection device 6 is realized, which is convenient for using the temperature detection device 6 to detect the temperature of the stator winding 5 in real time; moreover, compared with fixing the temperature detection device 6 to the coil 51 of the stator winding 5 with an additional fixing part, designing the temperature detection device fixing structure 2 and the bus body 1 as an integrated structure can reduce the number of parts, reduce the installation cost of the temperature detection device 6, and improve the fixing reliability of the temperature detection device 6.

[0032] like Figure 3-Figure 5 As shown, optionally, a through hole 11 communicating with the mounting groove 21 is provided on the busbar body 1 , and the through hole 11 extends in the same direction as the mounting groove 21 , for the temperature detection device 6 to pass through.

[0033] Specifically, the busbar body 1 is provided with a through hole 11 penetrating along the Z direction, the mounting groove 21 extends along the Z direction, and the lower end of the through hole 11 is communicated with the upper end of the mounting groove 21 .

[0034] In this embodiment, the temperature detection device 6 can pass through the through hole 11 from top to bottom to be inserted into the installation groove 21, thereby realizing quick installation of the temperature detection device 6 and reducing manual installation costs.

[0035] like Figure 3 and Figure 5 As shown, optionally, the mounting groove 21 is used to accommodate the heat-sensing component 61 of the temperature detection device 6, and the groove wall of the mounting groove 21 at one end away from the through hole 11 is used to abut against one end of the heat-sensing component 61, and the end of the mounting groove 21 close to the through hole 11 is provided with a limiting protrusion 211, and the limiting protrusion 211 is used to abut against the other end of the heat-sensing component 61.

[0036] Specifically, the temperature detection device 6 can be a temperature sensor, including a heat-sensitive element 61 and a lead 62. The heat-sensitive element 61 can be connected to a display device via the lead 62 to display the measurement results in real time. The mounting groove 21 can be a rectangular groove that matches the shape of the heat-sensitive element 61. When the heat-sensitive element 61 is placed in the mounting groove 21, the lead 62 can extend upward from the through hole 11. A limiting protrusion 211 is provided at the upper end of the bottom of the mounting groove 21. The limiting protrusion 211 can undergo extrusion deformation. Two limiting protrusions 211 can be provided, and the two limiting protrusions 211 are spaced apart along the width direction of the mounting groove 21.

[0037] In this embodiment, during the process of inserting the heat-sensing component 61 of the temperature detection device 6 into the installation groove 21 through the through hole 11, the limiting protrusion 211 will be squeezed until the lower end of the heat-sensing component 61 abuts against the lower wall of the installation groove 21. At this time, the temperature detection device 6 is installed in place, the limiting protrusion 211 recovers its deformation and bounces up, and the upper end of the heat-sensing component 61 abuts against the limiting protrusion 211. The limiting protrusion 211 and the lower wall of the installation groove 21 are respectively abutted against the vertical ends of the heat-sensing component 61 to achieve installation limitation of the heat-sensing component 61, thereby preventing the temperature detection device 6 from vertically detaching from the temperature detection device fixing structure 2.

[0038] like Figure 1 As shown, optionally, the temperature detection device fixing structure 2 is arranged near the circumferential outer edge of the bus body 1, and the temperature detection device fixing structure 2 is used to be located on the outside of the outermost coil 51 of the stator winding 5, and the temperature detection device fixing structure 2 is provided with the mounting groove 21 on the side facing the outermost coil 51.

[0039] Specifically, the motor bus or bus body 1 can be annular or arc-shaped, and is coaxially arranged with the stator core 4 and the coil 51 of the stator winding 5. The temperature detection device fixing structure 2 is arranged near the circumferential outer edge of the bus body 1, so that after the bus body 1 is connected to the stator winding 5, the temperature detection device fixing structure 2 can be located outside the stator winding 5, that is, outside the outermost coil 51 of the stator winding 5. By providing a mounting groove 21 on the side of the temperature detection device fixing structure 2 facing the outermost coil 51, that is, the side of the temperature detection device fixing structure 2 facing the central axis of the stator core 4, the temperature detection device 6 in the mounting groove 21 is brought into contact with the outermost coil 51, thereby achieving real-time measurement of the temperature of the coil 51.

[0040] It should be noted that the coils 51 are arranged in multiple layers from the inside to the outside along the radial direction of the stator core 4. The distance between each layer of coils 51 is small, and it is difficult to arrange the temperature detection device 6. Therefore, by setting the temperature detection device fixing structure 2 on the circumferential outer edge of the bus body 1, the temperature detection device 6 can be fixed to the outermost layer of coils 51, and the installation of the temperature detection device 6 is easier.

[0041] like Figure 4-Figure 5 As shown, optionally, the motor busbar further includes a spring piece 3 , and the spring piece 3 is placed in the mounting groove 21 .

[0042] Specifically, the spring piece 3 can be of any shape and can be elastically deformed. By placing the spring piece 3 within the mounting slot 21, when the temperature detection device 6 is installed within the mounting slot 21, the temperature detection device 6 will press the spring piece 3. The spring piece 3 applies an elastic force to the temperature detection device 6, thereby pressing the temperature detection device 6 against the coil 51, thereby ensuring the installation reliability of the temperature detection device 6.

[0043] like Figure 5-Figure 6 As shown, optionally, the elastic piece 3 includes an elastic piece body 31 , and the elastic piece body 31 protrudes toward the slot opening close to the mounting slot 21 to form an elastic protrusion 311 .

[0044] Specifically, the spring body 31 protrudes toward the slot near the mounting slot 21 to form an arc-shaped elastic protrusion 311. The elastic protrusion 311 can contact the temperature detection device 6. The elastic protrusion 311 makes the force and deformation of the spring body 31 more uniform and the durability better; taking the temperature detection device fixing structure 2 located on the outside of the outermost coil 51 as an example, when the temperature detection device 6 is placed in the mounting slot 21, the temperature detection device 6 applies an extrusion force radially outward along the stator core 4 to the spring body 31 to deform the spring body 31, and the spring body 31 applies an extrusion force radially inward along the stator core 4 to the temperature detection device 6 to ensure that the temperature detection device 6 is in close contact with the coil 51.

[0045] The spring body 31 can be a strip extending in a wave shape and is generally arranged vertically. A plurality of elastic protrusions 311 can be arranged at intervals along the extension direction of the spring body 31. The force applied to the temperature detection device 6 is more uniform and the installation is more reliable.

[0046] like Figure 5-Figure 6 As shown, optionally, the elastic piece 3 further includes a connecting piece 32 , one end of the connecting piece 32 is connected to the elastic protrusion 311 , and the other end of the connecting piece 32 is inclined toward the notch close to the mounting slot 21 .

[0047] Specifically, the connecting piece 32 may be a strip-shaped structure with a relatively short length. The connecting piece 32 may be formed by stamping the elastic piece 3 . A process hole is formed on the elastic protrusion 311 at a position corresponding to the connecting piece 32 .

[0048] In this embodiment, when the temperature detection device 6 is installed in the installation groove 21, the connecting piece 32 and the elastic protrusion 311 will be squeezed in sequence, that is, the connecting piece 32 and the elastic protrusion 311 of the spring piece 3 can respectively apply elastic extrusion force to the temperature detection device 6 to ensure that the temperature detection device 6 is tightly attached to the coil 51, so that the installation of the temperature detection device 6 is more stable.

[0049] Optionally, the spring piece 3 , the temperature detection device fixing structure 2 and the busbar body 1 are integrally injection molded.

[0050] In this embodiment, the shrapnel 3 can be a metal shrapnel, which is processed in advance. Thereafter, the shrapnel 3 is placed in an injection mold, and molten plastic is poured. After solidification, the plastic part forms the temperature detection device fixing structure 2 and the bus body 1, thereby realizing the one-piece injection molding of the shrapnel 3, the temperature detection device fixing structure 2 and the bus body 1. The processing is simple, and the installation stability of the temperature detection device fixing structure 2 and the shrapnel 3 is good, which is conducive to ensuring the installation reliability of the temperature detection device 6.

[0051] Yet another embodiment of the present invention provides a motor assembly comprising a stator core 4, a stator winding 5, a temperature detection device 6, and the aforementioned motor busbar. The motor busbar is disposed at one end of the stator core 4 and connected to the stator winding 5. The temperature detection device 6 is disposed within a mounting slot 21 of a temperature detection device fixing structure 2 of the motor busbar. The temperature detection device fixing structure 2 presses the temperature detection device 6 against a corresponding coil 51 of the stator winding 5. The advantages of this motor assembly over the prior art are the same as those of the aforementioned motor busbar and will not be repeated.

[0052] Another embodiment of the present invention provides a vehicle including the above-mentioned motor assembly. The advantages of the vehicle compared to the prior art are the same as those of the above-mentioned motor assembly, and are not described again.

[0053] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A motor busbar, for mounting on one end of a stator core (4) of a motor and for connecting to a stator winding (5) of the motor, characterized in that: The invention comprises a busbar body (1) and a temperature detection device fixing structure (2), wherein the temperature detection device fixing structure (2) is arranged at one end of the busbar body (1) close to the stator core (4), and the temperature detection device fixing structure (2) and the busbar body (1) are an integrated structure, and a mounting groove (21) is provided on a side of the temperature detection device fixing structure (2) facing the corresponding coil (51) of the stator winding (5), the mounting groove (21) is used to install a temperature detection device (6), and the temperature detection device fixing structure (2) is used to press the temperature detection device (6) onto the corresponding coil (51).

2. The motor busbar according to claim 1, characterized in that: The busbar body (1) is provided with a through hole (11) communicating with the mounting groove (21), and the through hole (11) and the mounting groove (21) extend in the same direction, for the temperature detection device (6) to pass through.

3. The motor busbar according to claim 2, characterized in that: The mounting groove (21) is used to accommodate the heat-sensing component (61) of the temperature detection device (6); the groove wall of the mounting groove (21) at one end away from the through hole (11) is used to abut against one end of the heat-sensing component (61); the end of the mounting groove (21) close to the through hole (11) is provided with a limiting protrusion (211); the limiting protrusion (211) is used to abut against the other end of the heat-sensing component (61).

4. The motor busbar according to claim 1, characterized in that: The temperature detection device fixing structure (2) is arranged close to the circumferential outer edge of the busbar body (1), and the temperature detection device fixing structure (2) is used to be located outside the outermost coil (51) of the stator winding (5), and the mounting groove (21) is provided on a side of the temperature detection device fixing structure (2) facing the outermost coil (51).

5. The motor busbar according to claim 1, characterized in that: It also includes a spring piece (3), which is placed in the installation groove (21).

6. The motor busbar according to claim 5, characterized in that: The spring piece (3) comprises a spring piece body (31), and the spring piece body (31) protrudes toward a slot opening close to the mounting slot (21) to form an elastic protrusion (311).

7. The motor busbar according to claim 6, characterized in that: The spring piece (3) further comprises a connecting piece (32), one end of which is connected to the elastic protrusion (311), and the other end of which is inclined toward the notch near the mounting slot (21).

8. The motor busbar according to claim 5, characterized in that: The spring piece (3), the temperature detection device fixing structure (2) and the busbar body (1) are integrally injection-molded.

9. A motor assembly, characterized in that: The motor bus comprises a stator core (4), a stator winding (5), a temperature detection device (6), and a motor bus as claimed in any one of claims 1 to 8, wherein the motor bus is arranged at one end of the stator core (4) and connected to the stator winding (5), the temperature detection device (6) is arranged in a mounting groove (21) of a temperature detection device fixing structure (2) of the motor bus, and the temperature detection device fixing structure (2) presses the temperature detection device (6) onto a corresponding coil (51) of the stator winding (5).

10. A vehicle, characterized in that: Comprising the motor assembly of claim 9.

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