Stator assembly and motor

Abstract

The utility model relates to a stator assembly and a motor, and relates to the technical field of motors, the stator assembly comprises a busbar and a temperature sensor, the busbar comprises a copper bar and an injection molding part which are in injection molding connection, the end, protruding in the height direction of the injection molding part, of the copper bar is a protruding end, and a surrounding part is arranged on the peripheral side of the injection molding part in a protruding mode; a mounting part is arranged on the side, away from the protruding end of the copper bar, of the injection molding part and exposes the copper bar, and the temperature sensor is mounted on the mounting part and used for testing the temperature of the copper bar at the mounting part. Before the temperature sensor is installed, the stator assembly is coated with the trickle paint, and the trickle paint is blocked by the enclosure part arranged on the injection molding part, so that the trickle paint cannot flow to the installation part, and the installation of the temperature sensor cannot be influenced; after paint dripping is completed, the temperature sensor is detachably installed on the installation portion and the contact position of the installation portion and the copper bar, if the temperature sensor needs to be reworked and maintained, the temperature sensor can be detached at any time, scrapping of the stator assembly is avoided, and cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of motors, and in particular to a stator assembly and a motor. Background Art

[0002] With the development of the times, new energy vehicles are becoming more and more popular. Among them, the core component of new energy vehicles - motors, has an irreplaceable position. The main drive motor used in new energy vehicles is still the permanent magnet synchronous motor. In order to detect the heat dissipation effect of the permanent magnet synchronous motor, a temperature sensor is usually installed at the busbar of the motor to monitor the temperature of the motor.

[0003] In the prior art, the temperature sensor is usually tied to the busbar by a binding rope. Since the binding operation is performed before paint coating, the wiring harness needs to be protected during the paint coating operation. Moreover, the thermistor cannot be disassembled after paint coating, and the thermistor cannot be reworked and repaired alone, so the stator can only be scrapped, resulting in high maintenance costs. Utility Model Content

[0004] Based on this, a stator assembly and a motor are provided. The stator assembly is configured so that the temperature sensor can be removed from the bus bar alone after the paint application is completed, thereby avoiding the scrapping of the stator and reducing the maintenance cost.

[0005] To this end, in a first aspect, an embodiment of the present application provides a stator assembly, comprising a busbar and a temperature sensor, the busbar comprising a copper busbar connected by injection molding and an injection molded part, the end of the copper busbar protruding along the height direction of the injection molded part being a protruding end, the outer peripheral side of the injection molded part being protrudingly provided with a blocking portion, the side of the injection molded part being provided with a mounting portion away from the protruding end of the copper busbar, the mounting portion exposing the copper busbar, and the temperature sensor being mounted on the mounting portion and being used to test the temperature of the copper busbar at the mounting portion.

[0006] In one of the embodiments, a bundling piece is further included, and the bundling piece is used to bundle the bus bar and the temperature sensor.

[0007] In one of the embodiments, the injection molded part is provided with a recessed portion for installing the strapping piece.

[0008] In one of the embodiments, the recessed portion is disposed at an end of the injection molded part away from the enclosure portion; and / or, the recessed portion is disposed at the enclosure portion; and / or, the recessed portion extends along a height direction of the injection molded part.

[0009] In one embodiment, at least two recessed portions are provided and are spaced apart along the extending direction of the enclosure portion; and at least two binding members are provided and correspond to at least two recessed portions.

[0010] In one of the embodiments, the injection molded part further has a protruding positioning portion, and the positioning portion is located at one end of the mounting portion extending along its own circumferential direction to limit the temperature sensor.

[0011] In one of the embodiments, a receiving portion is protruding from the outer periphery of the injection molded part, the receiving portion is spaced apart from the enclosing portion along the height direction of the injection molded part, and the mounting portion is located between the receiving portion and the enclosing portion.

[0012] In one of the embodiments, a first elastic gasket is provided on a side of the receiving portion facing the surrounding portion.

[0013] In one of the embodiments, a second elastic gasket is provided on a side of the enclosing portion facing the receiving portion.

[0014] In a second aspect, an embodiment of the present application provides a motor, comprising a stator assembly as described in any one of the above items.

[0015] According to the stator assembly and motor provided in the embodiment of the present application, the stator assembly includes a bus and a temperature sensor. The bus includes a copper bus connected by injection molding and an injection molded part. The end of the copper bus that protrudes along the height direction of the injection molded part is a protruding end. The outer peripheral side of the injection molded part is protrudingly provided with a blocking portion. The injection molded part is provided with a mounting portion on the side away from the protruding end of the copper bus. The mounting portion exposes the copper bus. The temperature sensor is mounted on the mounting portion and is used to test the temperature of the copper bus at the mounting portion. Before installing the temperature sensor, the stator assembly is first coated with dripping paint. Since the injection molded part is provided with a blocking portion, the blocking portion blocks the dripping paint, so that the dripping paint will not flow to the mounting portion and will not affect the installation of the temperature sensor. After the dripping paint is completed, the temperature sensor is detachably installed on the mounting portion and in contact with the copper bus. If the temperature sensor needs to be reworked and repaired, it can also be disassembled at any time to avoid the scrapping of the stator assembly and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a stator assembly provided in an embodiment of the present application is shown;

[0017] Figure 2 Show Figure 1 A partial enlarged structural schematic diagram of region A of the stator assembly shown;

[0018] Figure 3 A schematic diagram showing the structure of a bus provided in an embodiment of the present application is shown;

[0019] Figure 4 Show Figure 1 A schematic diagram of the partial enlarged structure of area B of the stator assembly is shown.

[0020] Description of reference numerals:

[0021] 1. Busbar; 11. Copper busbar; 12. Injection molded part; 121. Enclosure; 122. Installation part; 123. Recessed part; 124. Positioning part; 2. Temperature sensor; 3. Bundling part. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0023] It should be noted that the illustrations provided in this embodiment are only used to schematically illustrate the basic concept of the present invention. Therefore, the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0024] The structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0025] The directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "middle", "longitudinal", "lateral", "horizontal", "inner", "outer", "radial", "circumferential" and the like in this specification are based on the directions or positional relationships shown in the drawings and are only for the convenience of simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] The temperature sensor is usually tied to the busbar with a binding rope. Since the binding operation is performed before paint coating, the wiring harness needs to be protected during the paint coating operation. The thermistor cannot be disassembled after paint coating, and the thermistor cannot be reworked and repaired alone. The stator can only be scrapped, resulting in high maintenance costs.

[0027] To solve the above problems, refer to Figure 1-Figure 4 , Figure 1 A schematic structural diagram of a stator assembly provided in an embodiment of the present application is shown. Figure 2 Show Figure 1 The schematic diagram of the partial enlarged structure of area A of the stator assembly shown, Figure 3 A schematic diagram of the structure of a bus provided in an embodiment of the present application is shown. Figure 4 Show Figure 1 A schematic diagram of the partial enlarged structure of area B of the stator assembly is shown.

[0028] The present application provides a stator assembly, which includes a busbar 1 and a temperature sensor 2. The busbar 1 includes a copper busbar 11 and an injection molded part 12 connected by injection molding. The end of the copper busbar 11 that protrudes along the height direction of the injection molded part 12 is a protruding end. A surrounding portion 121 is protrudingly provided on the outer peripheral side of the injection molded part 12. A mounting portion 122 is provided on the side of the injection molded part 12 that is away from the protruding end of the copper busbar 11. The mounting portion 122 exposes the copper busbar 11. The temperature sensor 2 is installed on the mounting portion 122 and is used to test the temperature of the copper busbar 11 at the mounting portion 122.

[0029] It should be understood that the stator assembly includes a busbar 1, which is arranged in an arc shape, that is, the busbar 1 has an inner peripheral side and an outer peripheral side, and the busbar 1 includes a copper busbar 11 and an injection molded part 12, and the injection molded part 12 can be made of insulating material, such as high-strength polyester resin, PVC and other materials, which are not limited in this application. During production, the copper busbar 11 and the injection molded part 12 are integrally molded, wherein one end of the copper busbar 11 protrudes from the injection molded part 12 and the protruding end is used to connect with the flat wire, and one end of the copper busbar 11 protruding from the injection molded part 12 is a protruding end.

[0030] The outer peripheral side of the injection molded part 12 is protruded with a retaining portion 121, and the material of the retaining portion 121 is the same as that of the injection molded part 12, and the retaining portion 121 extends along the circumference of the injection molded part 12. The injection molded part 12 is also provided with a mounting portion 122, and the mounting portion 122 is located on the side of the retaining portion 121 away from the protruding end of the copper bar 11, and the mounting portion 122 exposes the copper bar 11, and the temperature sensor 2 is installed at the mounting portion 122. The temperature sensor 2 can be selected from infrared sensors or thermistors, which are not set in this application. When the temperature sensor 2 is installed in the mounting portion 122, the installation method can be bundling, clamping, bonding and other connection methods, which are not limited in this application. The temperature sensor 2 contacts the copper bar 11 exposed at the mounting portion 122, so that the temperature sensor 2 can detect the temperature of the copper bar 11 and then calculate the temperature of the stator assembly.

[0031] Before installing the temperature sensor 2, the stator assembly is first coated with dripping paint. Since the injection molded part 12 is provided with a blocking portion 121, the blocking portion 121 blocks the dripping paint, so that the dripping paint will not flow to the installation portion 122, and will not affect the installation of the temperature sensor 2; when the dripping paint is completed, the temperature sensor 2 is detachably installed on the installation portion 122 and in contact with the copper bus 11. If the temperature sensor 2 needs to be reworked and repaired, it can also be disassembled at any time to avoid scrapping of the stator assembly and reduce costs.

[0032] Furthermore, compared with installing the temperature sensor 2 on the flat wire after applying drip paint, the present application avoids the temperature sensor 2 from contacting the uneven paint layer on the surface of the flat wire. The temperature sensor 2 of the present application directly contacts the copper bus 11, thereby avoiding the temperature difference caused by the uneven paint layer, making the detection more accurate. Furthermore, compared with installing the temperature sensor 2 on the flat wire, the present application provides a larger installation space for the temperature sensor 2 and is more convenient to install.

[0033] Reference Figure 1 and Figure 2 In some optional embodiments, a binding member 3 is further included, and the binding member 3 is used to bind the bus 1 and the temperature sensor 2. The binding member 3 can be made of a rope, a rolled belt, etc., and this application does not limit it. During installation, after the temperature sensor 2 is placed at the installation portion 122, the temperature sensor 2 is bundled and connected to the bus 1 through the binding member 3. In one example, the binding member 3 is a rolled belt. Compared with an ordinary rope, the installation of the rolled belt is more convenient, and the rolled belt is not easy to loosen after installation, which further improves the stability of the installation of the temperature sensor 2 and the bus 1.

[0034] Reference Figure 2 and Figure 4 In some optional embodiments, the injection molded part 12 is provided with a recessed portion 123 for installing the binding member 3. During installation, the temperature sensor 2 is first placed at the installation portion 122, and then the binding member 3 is placed in the recessed portion 123, and the temperature sensor 2 is connected to the bus 1 through the binding member 3. The provision of the recessed portion 123 prevents the binding member 3 from moving, thereby preventing the stability of the installation of the temperature sensor 2 and the bus 1 from being affected.

[0035] In some optional embodiments, the recessed portion 123 is disposed at one end of the injection molded part 12 away from the enclosure portion 121. This can prevent the enclosure portion 121 from being recessed, does not affect the blocking of paint dripping, and can also limit the position of the bundle 3 to prevent the bundle 3 from moving.

[0036] In some optional embodiments, the recessed portion 123 is provided on the enclosure portion 121. At this time, the protruding portion of the recessed portion 123 also covers the temperature sensor 2, can also block the dripping paint, and at the same time can limit the position of the bundle 3 to prevent the bundle 3 from moving.

[0037] In some optional embodiments, the recessed portion 123 extends along the height direction of the injection molded part 12. That is, the recessed portion 123 is not only provided at the enclosure portion 121, but also provided at the injection molded part 12 away from the enclosure portion 121, and at the inner side of the injection molded part 12. The arrangement of the present application can further improve the position limitation of the bundle 3 and prevent the bundle 3 from moving.

[0038] In some optional embodiments, at least two recessed portions 123 are provided and are spaced apart along the extension direction of the enclosure portion 121; at least two binding pieces 3 are provided and correspond to at least two recessed portions 123. The number of recessed portions 123 may be two, three or other numbers, and the number of binding pieces 3 is equal to the number of recessed portions 123, so as to be easily placed in the recessed portions 123. The provision of at least two recessed portions 123 and at least two binding pieces 3 can make the temperature sensor 2 more closely connected to the busbar 1, and improve the stability of the connection between the temperature sensor 2 and the busbar 1.

[0039] In some optional embodiments, the injection molded part 12 further protrudes with a positioning portion 124, and the positioning portion 124 is located at one end of the mounting portion 122 extending along its own circumferential direction to limit the temperature sensor 2. The material of the positioning portion 124 is the same as that of the injection molded part 12. The positioning portion 124 protrudes from the outer surface of the injection molded part 12 and is located at one end of the mounting portion 122 extending along its own circumferential direction. During installation, when the temperature sensor 2 is placed in the mounting portion 122, one end of the temperature sensor 2 abuts against the positioning portion 124. The setting of the positioning portion 124 can position the installation of the temperature sensor 2, avoid deviation in the installation of the temperature sensor 2, and thereby improve the accuracy of the temperature sensor 2 in detecting the copper bus 11, and improve the accuracy of the detection.

[0040] In some optional embodiments, a receiving portion (not shown in the figure) is protruded from the outer periphery of the injection molded part 12, and the receiving portion is spaced apart from the enclosure portion 121 along the height direction of the injection molded part 12, and the mounting portion 122 is located between the receiving portion and the enclosure portion 121. The receiving portion is made of the same material as the injection molded part 12, and the receiving portion is located on the outer periphery of the injection molded part 12 and spaced apart from the enclosure portion 121, that is, the receiving portion is located below the enclosure portion 121, so that the mounting portion 122 is located between the receiving portion and the enclosure portion 121. When installing the temperature sensor 2, if the temperature sensor 2 is not elastic, the temperature sensor 2 can be placed between the receiving portion and the enclosure portion 121 first, and the receiving portion supports the temperature sensor 2, and the operator does not need to manually support it, so as to prevent the receiving portion from falling from the mounting portion 122, and then the temperature sensor 2 is connected to the injection molded part 12 through the binding member 3. The provision of the receiving portion makes it easier to install the temperature sensor 2. When the temperature sensor 2 is elastic, the temperature sensor 2 can be directly clamped between the receiving portion and the enclosure portion 121 without the need for an additional binding member 3 , thereby further improving the convenience of installing the temperature sensor 2 .

[0041] In some optional embodiments, a first elastic gasket (not shown in the figure) is provided on one side of the receiving portion facing the enclosure portion 121. The first elastic gasket can be made of elastic materials such as rubber, sponge, spring, etc., and the present application does not limit it. When the temperature sensor 2 extends between the receiving portion and the enclosure portion 121, the first elastic gasket can be deformed to improve the clamping effect of the temperature sensor 2, so that when the temperature sensor 2 has no elasticity, it can still be clamped between the receiving portion and the enclosure portion 121, thereby improving the stability of the connection between the receiving portion and the enclosure portion 121 to the temperature sensor 2. The present application can also add a binding member 3 to further improve the stability of the installation of the temperature sensor 2.

[0042] In some optional embodiments, a second elastic gasket (not shown in the figure) is provided on one side of the enclosure 121 facing the receiving portion. The second elastic gasket can be made of elastic materials such as rubber, sponge, spring, etc., and this application does not limit it. When the temperature sensor 2 extends between the receiving portion and the enclosure 121, the second elastic gasket can be deformed to improve the clamping effect of the temperature sensor 2 and improve the stability of the clamping of the temperature sensor 2. The present application can also add a binding piece 3 to further improve the stability of the installation of the temperature sensor 2.

[0043] Reference Figure 1-Figure 4 In some optional embodiments, the receiving portion is provided with a first elastic gasket, and the surrounding portion 121 is provided with a second elastic gasket.

[0044] The present application also includes a motor, which includes a stator assembly as described in any of the above items. The stator assembly includes a busbar 1 and a temperature sensor 2, the busbar 1 is arranged in an arc shape, and the busbar 1 includes a copper busbar 11 and an injection molded part 12 connected by injection molding, the end of the copper busbar 11 protruding along the height direction of the injection molded part 12 is a protruding end, and a surrounding part 121 is protruding on the outer peripheral side of the injection molded part 12, and a mounting part 122 is provided on the side of the injection molded part 12 away from the protruding end of the copper busbar 11, and the mounting part 122 exposes the copper busbar 11, and the temperature sensor 2 is installed on the mounting part 122 and is used to test the temperature of the copper busbar 11 at the mounting part 122.

[0045] Before installing the temperature sensor 2, the present application first applies dripping paint to the stator assembly. Since the injection molded part 12 is provided with a blocking portion 121, the dripping paint will not flow to the installation portion 122, and will not affect the installation of the temperature sensor 2. After the dripping paint is completed, the temperature sensor 2 is detachably installed at the installation portion 122. If the temperature sensor 2 needs to be reworked and repaired, it can also be disassembled at any time to avoid the scrapping of the stator assembly and reduce costs. And compared with installing the temperature sensor 2 on the flat wire after applying dripping paint, the temperature sensor 2 of the present application is directly in contact with the copper bus 11, avoiding the temperature difference caused by the uneven paint layer, making the detection more accurate, and compared with installing the temperature sensor 2 on the flat wire, the present application has a larger installation space for the temperature sensor 2, which is more convenient to install.

[0046] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A stator assembly, characterized in that: The invention comprises a busbar (1) and a temperature sensor (2), wherein the busbar (1) comprises a copper busbar (11) and an injection molded part (12) connected by injection molding, wherein one end of the copper busbar (11) protruding in the height direction of the injection molded part (12) is a protruding end, a surrounding portion (121) is protrudingly provided on the outer peripheral side of the injection molded part (12), a mounting portion (122) is provided on the side of the injection molded part (12) away from the protruding end of the copper busbar (11), the mounting portion (122) exposes the copper busbar (11), and the temperature sensor (2) is mounted on the mounting portion (122) and is used to test the temperature of the copper busbar (11) at the mounting portion (122).

2. The stator assembly according to claim 1, characterized in that It also comprises a bundling piece (3), wherein the bundling piece (3) is used to bundle the bus bar (1) and the temperature sensor (2).

3. The stator assembly according to claim 2, characterized in that: The injection molded part (12) is provided with a recessed portion (123) for installing the binding member (3).

4. The stator assembly according to claim 3, characterized in that: The recessed portion (123) is arranged at one end of the injection molded part (12) away from the enclosing portion (121); and / or the recessed portion (123) is arranged on the enclosing portion (121); and / or the recessed portion (123) extends along the height direction of the injection molded part (12).

5. The stator assembly according to claim 3, characterized in that: At least two recessed portions (123) are provided and are spaced apart along the extension direction of the enclosure portion (121); and at least two binding members (3) are provided and correspond to at least two recessed portions (123).

6. The stator assembly according to claim 1, characterized in that The injection molded part (12) also has a protruding positioning portion (124), and the positioning portion (124) is located at one end of the mounting portion (122) extending along its own circumferential direction, so as to limit the position of the temperature sensor (2).

7. The stator assembly according to claim 1, characterized in that A receiving portion is protrudingly provided on the outer periphery of the injection molded part (12), the receiving portion is spaced apart from the enclosure portion (121) along the height direction of the injection molded part (12), and the mounting portion (122) is located between the receiving portion and the enclosure portion (121).

8. The stator assembly according to claim 7, characterized in that A first elastic gasket is provided on one side of the receiving portion facing the enclosing portion (121).

9. The stator assembly according to claim 7, characterized in that: A second elastic gasket is provided on one side of the enclosure portion (121) facing the receiving portion.

10. A motor, characterized in that: The stator assembly comprises the stator assembly according to any one of claims 1 to 9.

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