End cap assembly, electric machine, powertrain, and vehicle

Abstract

The application relates to an end cover assembly, a motor, a power assembly and a vehicle. The end cover assembly comprises an end cover, a glue pouring shell and a conductive piece. The end cover is provided with a receiving cavity. The glue pouring shell is arranged in the end cover, the glue pouring shell is provided with a glue containing channel, and at least part of the glue containing channel is located in the receiving cavity. The conductive piece is arranged in the glue containing channel. In the application, the glue pouring shell is arranged in the end cover to extend into the receiving cavity, so that the end cover assembly makes full use of the space in the receiving cavity, the end cover and the glue pouring shell are arranged relatively compactly, and the space occupied by the end cover assembly is reduced.

Description

Technical Field

[0001] This application relates to the field of end cap assembly technology, and more particularly to an end cap assembly, a motor, a powertrain, and a vehicle. Background Technology

[0002] In related technologies, a vehicle includes a motor, which includes a motor body and an end cover assembly. The end cover assembly includes an end cover, a potting shell, and a conductive element. The end cover is installed on the motor body, the potting shell is connected to the outside of the end cover, and the conductive element passes through the potting shell and the end cover in sequence to connect with the motor body. This makes the end cover assembly occupy a large space. Summary of the Invention

[0003] This application provides an end cap assembly, a motor, a powertrain, and a vehicle, with the aim of reducing the space occupied by the end cap assembly.

[0004] To achieve the above objectives, according to a first aspect of this application, an end cap assembly is provided, comprising:

[0005] End cap, with a receiving cavity;

[0006] A glue-filling shell, extending through the end cap, the glue-filling shell having a glue-receiving channel, at least a portion of the glue-receiving channel being located within the receiving cavity; and

[0007] A conductive element is inserted into the adhesive channel.

[0008] Optionally, the conductive element includes a conductive body and an adhesive-blocking portion, the adhesive-blocking portion being disposed at one end of the adhesive-containing channel, and the conductive element passing through the adhesive-blocking portion.

[0009] Optionally, the adhesive-blocking part is clearance-fitted with the adhesive-containing channel.

[0010] Optionally, the range of the single-sided gap between the adhesive-blocking part and the adhesive-containing channel is 0.01 mm to 0.1 mm.

[0011] Optionally, two adhesive-blocking parts are provided, and the two adhesive-blocking parts are respectively located at both ends of the adhesive-containing channel.

[0012] Optionally, at least one of the two adhesive-blocking parts is provided with an insertion end that extends into the adhesive-containing channel, and the insertion end is provided with an adhesive groove, which is formed on the end face of the insertion end.

[0013] Optionally, the groove is also formed on the periphery of the extended end;

[0014] And / or, the groove extends circumferentially along the extended end.

[0015] Optionally, the glue-filling shell is provided with a glue-filling hole, which is connected to the glue-containing channel.

[0016] Optionally, the potting shell is provided with a vent hole, which is connected to the adhesive channel.

[0017] Optionally, the glue-filling shell includes an inner end extending into the receiving cavity and an outer end located outside the receiving cavity, wherein one of the glue-filling hole and the vent hole is located at the inner end and the other is located at the outer end;

[0018] Alternatively, the glue-filling hole and the vent hole are located at the inner end of the cavity;

[0019] Alternatively, the glue-filling hole and the vent hole may be located at the outer end of the cavity.

[0020] Optionally, the end cap includes a housing and a cover, the housing and the cover together enclosing the receiving cavity, and the end cap assembly further includes a seal disposed between the housing and the cover.

[0021] Optionally, in the closing direction of the cover, the housing is provided with a sealing ring groove on the side near the cover, and the sealing element is disposed in the sealing ring groove.

[0022] Optionally, the conductive element includes a conductive body and a mounting portion, the conductive body being disposed on the mounting portion, and the mounting portion being fixedly connected to the end cap.

[0023] According to a second aspect of this application, an electric motor is provided, including the aforementioned end cap assembly.

[0024] According to a third aspect of this application, a powertrain is also provided, including the aforementioned electric motor.

[0025] According to a fourth aspect of this application, a vehicle is also provided, including the aforementioned powertrain.

[0026] In the end cap assembly of this application embodiment, the potting shell passes through the end cap, and the potting shell is provided with a glue-containing channel, at least part of which is located within the receiving cavity. This allows the end cap assembly to make full use of the space within the receiving cavity, resulting in a more compact arrangement of the end cap and the potting shell, which helps to reduce the space occupied by the end cap assembly. Furthermore, it is understood that the glue-containing channel is used to hold the glue; after the glue solidifies, it helps to improve the sealing performance of the end cap assembly, preventing water from flowing along the conductive components into the receiving cavity.

[0027] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0030] Figure 1 This is an exploded view of the end cap assembly provided in an exemplary embodiment of this disclosure;

[0031] Figure 2 yes Figure 1 Exploded view of the middle cover assembly;

[0032] Figure 3 yes Figure 2 Schematic diagram of the structure of the middle shell and the potting shell;

[0033] Figure 4 yes Figure 2 Schematic diagram of the structure of the conductive component;

[0034] Figure 5 yes Figure 1 Cross-sectional view of the inner shell, potting shell, and conductive components.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100. End cap assembly; 200. End cap; 210. Cover body; 220. Housing; 221. Open end; 222. Sealing ring groove; 230. Receiving cavity; 300. Glue filling shell; 310. Glue receiving channel; 320. Inner cavity end; 321. Glue filling hole; 330. Outer cavity end; 331. Vent hole; 400. Conductive component; 410. Conductive terminal; 420. Wire; 430. Glue blocking part; 431. First glue blocking part; 432. Second glue blocking part; 433. Extension end; 434. Glue groove; 440. Connecting part; 450. Mounting part; 500. Screw. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0038] According to the first aspect of this application, referring to Figures 1 to 5This disclosure provides an end cap assembly 100, which includes an end cap 200, a potting shell 300, and a conductive element 400. The end cap 200 has a receiving cavity 230. The potting shell 300 passes through the end cap 200 and has a potting channel 310, at least a portion of which is located within the receiving cavity 230. The conductive element 400 passes through the potting channel 310.

[0039] The glue-filling shell 300 is inserted through the end cap 200. The glue-filling shell 300 is provided with a glue-receiving channel 310. At least part of the glue-receiving channel 310 is located in the receiving cavity 230. This allows the end cap assembly 100 to make full use of the space in the receiving cavity 230, and makes the end cap 200 and the glue-filling shell 300 arranged more compactly, which helps to reduce the space occupied by the end cap assembly 100.

[0040] In addition, it is understood that the adhesive channel 310 is used to contain adhesive. After the adhesive solidifies, it helps to improve the sealing of the end cap assembly 100 and can prevent water from flowing into the receiving cavity 230 along the conductive element 400.

[0041] The end cap assembly 100 can be applied to an electrical device, which includes an electrical body and the end cap assembly 100. The end cap 200 of the end cap assembly 100 is disposed on the electrical body, and the conductive element 400 is electrically connected to the electrical body. Adhesive can prevent water from flowing along the conductive element 400 into the electrical device, thus reducing the possibility of short circuits. It is worth noting that the electrical device can be, but is not limited to, configured as a motor, and the electrical body can be configured as a motor body.

[0042] The conductive element 400 can have many structural forms. In one example, the conductive element 400 includes a wire 420 and a conductive terminal 410 connected to one end of the wire 420, with the conductive terminal 410 extending into the receiving cavity 230. In some other examples, the conductive element 400 may not have a conductive terminal 410, and the wire 420 may extend into the receiving cavity 230.

[0043] In some embodiments, the end cap assembly 100 further includes a circuit board disposed in the receiving cavity 230, and a conductive element 400 extends into the receiving cavity 230 to connect with the circuit board. The conductive element 400 can be connected to the electrical body via the circuit board. In one example, a conductive terminal 410 is connected to the circuit board.

[0044] In some embodiments, the conductive member 400 includes a conductive body and an adhesive-blocking portion 430. The adhesive-blocking portion 430 is disposed at one end of the adhesive-containing channel 310, and the conductive member 400 passes through the adhesive-blocking portion 430.

[0045] The glue section is located at one end of the glue-containing channel 310, which can effectively prevent glue from overflowing during glue dispensing. During the glue dispensing process of the motor, glue may overflow due to pressure or improper operation. The presence of the glue-blocking part 430 can confine the glue within the glue-containing channel 310, preventing glue from flowing into other unwanted areas.

[0046] In some embodiments, the adhesive-blocking portion 430 and the adhesive-receiving channel 310 are in a clearance fit. This clearance fit allows for some movement between the adhesive-blocking portion 430 and the adhesive-receiving channel 310, facilitating the smooth insertion of the adhesive-blocking portion 430 into the adhesive-receiving channel 310 during assembly and reducing assembly difficulty. The clearance fit also avoids rigid contact between the adhesive-blocking portion 430 and the adhesive-receiving channel 310, thereby reducing the risk of damage due to mechanical stress concentration and improving the overall reliability of the component. However, this design is not limited to this; in some other embodiments, the adhesive-blocking portion 430 and the adhesive-receiving channel 310 are in an interference fit.

[0047] In some embodiments, the single-sided gap between the glue-blocking portion 430 and the glue-receiving channel 310 ranges from 0.01 mm to 0.1 mm. A single-sided gap of 0.01 mm to 0.1 mm is small enough to effectively prevent glue overflow during the dispensing process. Even under dispensing pressure, glue is unlikely to leak into other areas through such a small gap, thus ensuring the cleanliness and sealing of the motor's interior. Different dispensing materials may have different flowability and viscosity. A smaller gap can accommodate various glue properties, ensuring effective prevention of glue overflow under different dispensing conditions. In one example, the single-sided gap between the glue-blocking portion 430 and the glue-receiving channel 310 is 0.05 mm.

[0048] In some embodiments, two adhesive blocking portions 430 are provided, and the two adhesive blocking portions 430 are respectively provided at both ends of the adhesive receiving channel 310.

[0049] Two glue-blocking parts 430 are respectively located at both ends of the glue-containing channel 310, which can effectively prevent glue from overflowing from both ends of the glue-containing channel during glue dispensing. During the glue dispensing process of the motor, glue may overflow due to pressure or improper operation. The presence of glue-blocking parts 430 can confine the glue within the glue-containing channel 310, preventing glue from flowing into other unwanted areas.

[0050] In one example, the conductive element 400 also includes a connecting portion 440 that connects the two adhesive baffles 430. The two adhesive baffles 430 and the connecting portion 440 may be integrally injection molded, but are not limited to, and the two adhesive baffles 430 are made of an insulating material.

[0051] In some embodiments, at least one of the two adhesive blocking portions 430 is provided with an insertion end 433 extending into the adhesive receiving channel 310. The insertion end 433 is provided with an adhesive groove 434, which is formed on the end face of the insertion end 433. The design of the adhesive groove 434 can increase the flowability of the adhesive when filling the adhesive receiving channel 310, and can increase the amount of adhesive that the adhesive receiving channel 310 can hold, thereby improving the sealing performance of the end cap assembly 100. In one example, the adhesive blocking portion 430 closer to the receiving cavity 230 is configured as the first adhesive blocking portion 431, and the one farther away from the receiving cavity 230 is configured as the second adhesive blocking portion 432, and the second adhesive blocking portion 432 is provided with the insertion end 433.

[0052] In some embodiments, the glue groove 434 is also formed on the periphery of the extension end 433. This helps to further increase the flowability of the glue when pouring glue into the glue-containing channel 310, and can increase the amount of glue that the glue-containing channel 310 can hold, thereby improving the sealing performance of the end cap assembly 100.

[0053] In some embodiments, the glue groove 434 extends circumferentially along the insertion end 433. This facilitates further increasing the flowability of the glue when filling the glue channel 310, and increases the amount of glue that the glue channel 310 can hold, thereby improving the sealing performance of the end cap assembly 100.

[0054] In one example, at least one of the two adhesive-blocking portions 430 has an insertion end 433 extending into the adhesive-receiving channel 310. The insertion end 433 has an adhesive groove 434, which is formed on the end face of the insertion end 433 and also on the periphery of the insertion end 433, extending circumferentially along the insertion end 433. This results in the adhesive groove 434 having two first groove sidewalls and a second groove sidewall connected at an included angle. In the normal direction of the first groove sidewall, the size of the second groove sidewall ranges from 0.5 mm to 1.5 mm, and the size of the second groove sidewall is, for example, but not limited to, 1 mm. In the normal direction of the second groove sidewall, the size of the first groove sidewall ranges from 0.5 mm to 1.5 mm, and the size of the first groove sidewall is, for example, but not limited to, 1 mm.

[0055] In some embodiments, the glue-filling shell 300 is provided with a glue-filling hole 321, which communicates with the glue-containing channel 310.

[0056] The dispensing hole 321 is directly connected to the adhesive channel 310, providing a clear and efficient flow path for the adhesive. This makes the dispensing process smoother.

[0057] A clearly defined dispensing path can reduce air bubbles generated during adhesive flow. The presence of air bubbles can lead to uneven dispensing or poor localized sealing, while this design effectively avoids these problems, ensuring dispensing quality.

[0058] The design of the dispensing hole 321 makes the dispensing operation simpler and more convenient. Operators can directly inject glue into the glue-containing channel 310 through the dispensing hole 321, reducing operating steps and difficulty, and improving production efficiency.

[0059] In some embodiments, the potting shell 300 is provided with a vent 331, which is connected to the adhesive channel 310.

[0060] The vent 331 is connected to the adhesive channel 310, which can effectively expel air from the adhesive channel 310 during the dispensing process. This allows the adhesive to fill the adhesive channel 310 more smoothly, reducing air resistance and thus improving dispensing efficiency.

[0061] If air cannot be expelled in time during the dispensing process, it may cause air bubbles to form. The design of the vent 331 can effectively expel this air, prevent air bubble formation, and ensure the uniformity and quality of dispensing.

[0062] The vent 331 ensures that the adhesive is evenly filled in the adhesive channel 310, avoiding poor local sealing caused by air accumulation.

[0063] In some embodiments, the glue-filling shell 300 includes an inner end 320 extending into the receiving cavity 230 and an outer end 330 located outside the receiving cavity 230. One of the glue-filling hole 321 and the vent hole 331 is located in the inner end 320, and the other is located in the outer end 330. In this way, the glue-filling hole 321 and the vent hole 331 are far apart, which facilitates the separate opening of the glue-filling hole 321 and the vent hole 331 in the glue-filling shell 300.

[0064] In some other embodiments, the potting hole 321 and the vent hole 331 are located at the inner end 320 of the cavity. It is understood that as the adhesive solidifies within the adhesive channel 310, its volume gradually decreases, potentially causing the potting hole 321 to connect with the vent hole 331 through the adhesive channel 310. Since both the potting hole 321 and the vent hole 331 are located at the inner end 320 of the cavity, regardless of whether they are connected during the adhesive solidification process, moisture outside the receiving cavity 230 will not enter the receiving cavity 230 through either the potting hole 321 or the vent hole 331, thus reducing the possibility of short circuits in the conductive component 400. In one example, this can reduce the possibility of short circuits in the circuit board.

[0065] In some other embodiments, the potting hole 321 and the vent hole 331 are located at the outer end 330 of the cavity. It is understood that as the adhesive solidifies within the adhesive channel 310, its volume gradually decreases, potentially causing the potting hole 321 to connect with the vent hole 331 through the adhesive channel 310. Since both the potting hole 321 and the vent hole 331 are located at the outer end 330, regardless of whether they are connected during adhesive solidification, moisture outside the receiving cavity 230 will not enter the receiving cavity 230 through either the potting hole 321 or the vent hole 331, thus reducing the possibility of short circuits in the conductive component 400. In one example, this can reduce the possibility of short circuits in the circuit board.

[0066] In some embodiments, the end cap 200 includes a housing 220 and a cover 210, which together enclose a receiving cavity 230. The end cap assembly 100 also includes a sealing element disposed between the housing 220 and the cover 210. This improves the sealing performance of the receiving cavity 230 and effectively prevents external dust, moisture, etc., from entering the receiving cavity 230.

[0067] In one example, the housing 220 has an open end 221, a cover 210 for covering the open end 221, and a seal is disposed between the open end 221 and the cover 210. In one example, on the centerline of the open end 221, the inner cavity end 320 and the potting hole 321 are exposed inside the open end 221, while the vent hole 331 and the outer cavity end 330 are located outside the open end 221.

[0068] In some embodiments, in the closing direction of the cover 210, the housing 220 is provided with a sealing ring groove 222 on the side near the cover 210, and a seal is provided in the sealing ring groove 222.

[0069] The sealing ring groove 222 provides a precise installation position for the seal, reducing the amount of displacement or deformation of the seal during installation, thereby improving the sealing effect.

[0070] The sealing ring groove 222 can concentrate the sealing effect of the seal in a specific area, forming a continuous sealing surface, and further enhancing the sealing performance.

[0071] The seal is installed in the sealing ring groove 222, which can better fix the seal and reduce the displacement or damage of the seal caused by vibration or impact, thereby improving the service life of the seal.

[0072] In one example, the open end 221 is provided with a sealing ring groove 222. The sealing ring groove 222 can be circular or elliptical, and there is no limitation thereto. When the sealing ring groove 222 is circular, the seal is easy to obtain and manufacture.

[0073] In some embodiments, the conductive element 400 includes a conductive body and a mounting portion 450, with the conductive body disposed on the mounting portion 450, which is fixedly connected to the end cap 200. This allows for a more stable position of the conductive element 400 relative to the end cap 200. In one example, this makes the connection between the conductive element 400 and the circuit board more stable, ensuring good electrical contact between the conductive element 400 and the circuit board.

[0074] In some embodiments, the mounting portion 450 and the end cap 200 are fastened together by screws 500. Screw fastening is a highly reliable connection method, ensuring a secure connection between the mounting portion 450 and the end cap 200. This connection method effectively prevents the mounting portion 450 from shifting or loosening due to vibration or impact, thereby improving the structural stability of the entire assembly. The simple installation process reduces installation errors caused by improper operation, improving assembly quality.

[0075] In one example, the mounting part 450 and the end cap 200 are locked in the same direction as the extension direction of the adhesive channel 310. During the assembly of the conductive part 400 and the end cap 200, one of the adhesive baffles of the conductive part 400 can extend into the adhesive channel 310 to reach one end of the adhesive channel 310 near the receiving cavity 230, and the other adhesive baffle 430 subsequently reaches the other end of the adhesive channel 310 away from the receiving cavity 230. The two adhesive baffles 430 prevent adhesive from overflowing from both ends of the adhesive channel 310. The mounting part 450 is provided at the adhesive baffle 430 away from the receiving cavity 230, and the mounting part 450 is locked to the housing 220 of the end cap 200 by screws 500.

[0076] However, this design is not limited to this. In some other embodiments, the mounting part 450 is snapped into the end cap 200.

[0077] According to a second aspect of this disclosure, an electric motor is provided that includes the end cap assembly 100 described above. This motor possesses all the beneficial effects of the aforementioned minimal protection subject matter, which will not be elaborated further herein.

[0078] According to a third aspect of this disclosure, a powertrain is provided that includes the aforementioned motor, and the powertrain has all the beneficial effects of the aforementioned motor, which will not be repeated here.

[0079] According to a fourth aspect of this disclosure, a vehicle is provided that includes the powertrain described above, and the vehicle has all the beneficial effects of the electric motor described above, which will not be repeated here.

[0080] The vehicle may be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this disclosure does not make any specific restrictions.

[0081] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0082] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0083] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0084] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. An end cap assembly, characterized in that, include: End cap, with a receiving cavity; A glue-filling shell is inserted through the end cap, and the glue-filling shell is provided with a glue-receiving channel, at least a portion of which is located within the receiving cavity; as well as A conductive element is inserted into the adhesive channel.

2. The end cap assembly according to claim 1, characterized in that, The conductive component includes a conductive body and an adhesive-blocking portion. The adhesive-blocking portion is located at one end of the adhesive-containing channel, and the conductive component passes through the adhesive-blocking portion.

3. The end cap assembly according to claim 2, characterized in that, The adhesive-blocking part is fitted with the adhesive-containing channel with a clearance.

4. The end cap assembly according to claim 3, characterized in that, The range of the single-sided gap between the adhesive-blocking part and the adhesive-containing channel is 0.01 mm to 0.1 mm.

5. The end cap assembly according to claim 2, characterized in that, The adhesive-blocking part is provided in two parts, which are respectively located at both ends of the adhesive-containing channel.

6. The end cap assembly according to claim 2, characterized in that, At least one of the two adhesive-blocking parts is provided with an insertion end that extends into the adhesive-containing channel, and the insertion end is provided with an adhesive groove, which is formed on the end face of the insertion end.

7. The end cap assembly according to claim 6, characterized in that, The groove is also formed on the periphery of the extended end; And / or, the groove extends circumferentially along the extended end.

8. The end cap assembly according to claim 1, characterized in that, The glue-filling shell is provided with a glue-filling hole, which is connected to the glue-containing channel.

9. The end cap assembly according to claim 8, characterized in that, The glue-filling shell is provided with a vent hole, which is connected to the glue-containing channel.

10. The end cap assembly according to claim 9, characterized in that, The glue-filling shell includes an inner end extending into the receiving cavity and an outer end located outside the receiving cavity. One of the glue-filling hole and the vent hole is located at the inner end and the other is located at the outer end. Alternatively, the glue-filling hole and the vent hole are located at the inner end of the cavity; Alternatively, the glue-filling hole and the vent hole may be located at the outer end of the cavity.

11. The end cap assembly according to claim 10, characterized in that, The end cap includes a housing and a cover, the housing and the cover together enclosing the receiving cavity. The end cap assembly also includes a sealing element, the sealing element being disposed between the housing and the cover.

12. The end cap assembly according to claim 11, characterized in that, In the closing direction of the cover, the housing is provided with a sealing ring groove on the side near the cover, and the sealing element is disposed in the sealing ring groove.

13. The end cap assembly according to claim 1, characterized in that, The conductive component includes a conductive body and a mounting portion, wherein the conductive body is disposed on the mounting portion and the mounting portion is fixedly connected to the end cap.

14. An electric motor, characterized in that, Includes the end cap assembly as described in any one of claims 1 to 13.

15. A powertrain, characterized in that, Including the motor as described in claim 14.

16. A vehicle, characterized in that, Includes the powertrain as described in claim 15.

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