A generator assembly and a vehicle
By using a distribution ring to form an annular oil channel with the stator core in the generator assembly, the problems of poor winding insulation performance and cooling effect were solved, thereby improving the insulation performance and cooling effect of the winding and increasing the continuous power of the generator assembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SAIC MOTOR
- Filing Date
- 2025-07-11
- Publication Date
- 2026-07-03
AI Technical Summary
In the prior art, the insulation performance of the windings in the generator assembly is poor and the cooling effect is inadequate, resulting in a low continuous power of the generator assembly.
A distribution ring and a stator core form an annular oil channel. The windings are welded to their respective positions through the distribution ring, and cooling oil flows through the annular oil channel, which improves the insulation performance and cooling effect of the windings.
It improves the insulation performance at the winding ends, enhances the cooling effect, and increases the continuous power of the generator assembly.
Smart Images
Figure CN224459408U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of automotive powertrain technology, and more specifically, to a generator assembly and an automobile. Background Technology
[0002] In existing generator assemblies, copper wires are wound onto individual teeth using a centralized winding system. The windings are then placed in the corresponding stator slots, and the copper wires on each tooth are connected to form a circuit. The ends of the copper wires between the teeth are led out and welded together, resulting in poor insulation performance at the winding ends. At the same time, because the oil spraying cooling process can only spray the ends of the windings, the cooling effect of the windings in the stator slots is poor, resulting in low continuous power of the generator assembly.
[0003] In summary, improving the insulation performance at the winding ends and enhancing the winding cooling effect are problems that urgently need to be solved by those skilled in the art. Utility Model Content
[0004] In view of this, the purpose of this application is to provide a generator assembly and an automobile that improves the insulation performance of the winding ends and the winding cooling effect.
[0005] To achieve the above objectives, this application provides the following technical solution:
[0006] A generator assembly includes: a stator assembly and a rotor assembly that are rotatably coupled; wherein the stator assembly includes: a stator core having a plurality of stator slots for placing windings, the windings corresponding one-to-one with the stator slots; and a distribution ring mounted on the end face of the stator core, the distribution ring being connected to the welded ends of all the windings, and the distribution ring and the stator core forming an annular oil passage.
[0007] In some embodiments, the distribution ring includes: a distribution ring skeleton, the distribution ring skeleton being detachably fixedly connected to the end face of the stator core; a busbar, the busbar being injection molded onto the distribution ring skeleton and welded to the welding end of the winding, the end face of the busbar away from the winding being sealed with potting compound; and a high-voltage terminal, the high-voltage terminal being welded to the busbar via a connector.
[0008] In some embodiments, the winding includes a U-phase winding, a V-phase winding, and a W-phase winding;
[0009] The busbars include a U-phase busbar, a V-phase busbar, a W-phase busbar, and a neutral busbar; the U-phase busbar, V-phase busbar, W-phase busbar, and neutral busbar are all annular copper busbars, and the neutral busbar, U-phase busbar, V-phase busbar, and W-phase busbar are distributed sequentially from the outside to the inside along the radial direction of the stator core; one end of the U-phase winding is connected to the U-phase busbar, and the other end of the U-phase winding is connected to the neutral busbar; one end of the V-phase winding is connected to the V-phase busbar, and the other end of the V-phase winding is connected to the neutral busbar; one end of the W-phase winding is connected to the W-phase busbar, and the other end of the W-phase winding is connected to the neutral busbar.
[0010] In some embodiments, the stator core is provided with a first mounting lug; the distribution ring skeleton is provided with a second mounting lug; the distribution ring skeleton is mounted on the stator core via the second mounting lug and the first mounting lug.
[0011] In some embodiments, the stator core is provided with an oil pipe, the oil pipe having an oil inlet for introducing cooling oil; the distribution ring skeleton has two main oil ports; the oil pipe has two sets of spray holes at the top part located in the gravity direction of the stator core, and the spray holes correspond one-to-one with the main oil ports.
[0012] In some embodiments, the stator core further includes a slot wedge for closing the circumferential side of the stator slot; the stator assembly further includes an insulating skeleton; the distribution ring, the insulating skeleton, and the slot wedge form the annular oil passage.
[0013] In some embodiments, the stator core, the distribution ring, and the slot wedge form an in-slot oil passage, which extends axially along the stator slot; the cooling oil flows through the interior of the winding along the in-slot oil passage.
[0014] In some embodiments, the insulating frame has a through groove to allow the cooling oil to flow through the through groove into the interior of the stator slot.
[0015] In some embodiments, the stator core is provided with a stator housing.
[0016] An automobile includes a generator assembly as described above.
[0017] The generator assembly provided in this application includes a stator assembly and a rotor assembly that are rotatably coupled. The stator assembly includes a stator core with a plurality of stator slots, and windings are placed in the stator slots and correspond one-to-one with the stator slots. Distribution rings are installed on the end faces of the stator core, and the distribution rings are welded to the welding ends of all the windings. The distribution rings and the stator core form an annular oil channel. In this way, all the windings are welded to the corresponding positions of the distribution rings, reducing the safety hazards that would exist if all the windings were welded together as one piece, and improving the insulation performance of the winding ends. At the same time, the annular oil channel formed by the distribution rings and the stator core allows cooling oil to flow through the annular oil channel, improving the cooling effect on the windings and increasing the continuous power of the generator assembly. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the stator assembly provided in an embodiment of this application;
[0020] Figure 2 This is a schematic diagram of the stator assembly provided in an embodiment of this application from another angle;
[0021] Figure 3 This is a schematic diagram of the distribution ring in the stator assembly provided in an embodiment of this application;
[0022] Figure 4 This is a schematic diagram of the stator core structure in the stator assembly provided in the embodiments of this application;
[0023] Figure 5 This is a schematic diagram of the winding structure in the stator assembly provided in an embodiment of this application;
[0024] Figure 6 A schematic diagram of the stator slot in the stator core provided in an embodiment of this application;
[0025] Figure 7 This is a schematic diagram of the winding connection scheme in the generator assembly provided in the embodiments of this application;
[0026] Figure 8 A side sectional view of the generator assembly provided in an embodiment of this application;
[0027] Figure 9 for Figure 8 The diagram shown is an enlarged view of a portion of the generator assembly.
[0028] Figure 10 for Figure 9 The diagram shows the left side of the generator assembly.
[0029] Figure 11 for Figure 9 The diagram shows the right-side structure of the generator assembly shown.
[0030] Figure 12 This is a schematic diagram of the main oil port in the distribution ring provided in an embodiment of this application.
[0031] Explanation of reference numerals in the attached figures:
[0032] 100-Stator assembly, 101-Stator core, 1011-Stator slot, 1012-Slot wedge, 1013-First mounting lug, 102-Winding, 103-Stator housing, 104-Oil pipe, 1041-Oil inlet, 1042-Oil spray hole, 105-Insulation frame, 110-Distribution ring, 111-Distribution ring frame, 1110-Main oil port, 1111-Second mounting lug, 112-Busbar, 1121-U-phase busbar, 1122-V-phase busbar, 1123-W-phase busbar, 1124-Neutral busbar, 113-Potting compound, 114-Terminal, 115-High voltage terminal;
[0033] 200 - Rotor assembly, 201 - Rotor shaft, 202 - Rotor oil passage. Detailed Implementation
[0034] 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 some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The terminology used in the following embodiments is for the purpose of describing specific embodiments only and is not intended to be a limitation of this application. As used in the specification and appended claims of this application, the singular expressions "a," "an," "the," "the," "the," and "this" are intended to also include expressions such as "one or more," unless the context clearly indicates otherwise.
[0036] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.
[0037] In this application, "multiple" refers to two or more embodiments. It should be noted that in the description of the embodiments of this application, terms such as "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance, nor as indicating or implying order.
[0038] The generator assembly provided in this application includes a stator assembly 100 and a rotor assembly 200 that are rotatably coupled. The stator assembly 100 includes a stator core 101 with a plurality of stator slots 1011 for placing windings 102, and each winding 102 corresponds to a stator slot 1011. A distribution ring 110 is installed on the end face of the stator core 101, and the distribution ring 110 and the stator core 101 form an annular oil passage. In this way, all windings 103 are welded to the corresponding positions of the distribution ring 110, reducing the safety hazards caused by welding all windings 102 together, improving the insulation performance of the ends of the windings 102, and the annular oil passage formed by the distribution ring 110 and the stator core 101 allows cooling oil to flow through the annular oil passage, improving the cooling effect on the windings 102 and improving the continuous operation of the generator assembly.
[0039] like Figures 1-3 As shown, the distribution ring 110 includes: a distribution ring skeleton 111, which is detachably fixed to the end face of the stator core 101 so that the distribution ring 110 can be installed on the stator core 101 through the distribution ring skeleton 111; a busbar 112, which is injection molded inside the distribution ring skeleton 111 and welded to the welding ends of all windings 102, and the end face of the busbar 112 away from the windings 102 is sealed with potting compound 113. By welding the windings 102 to the corresponding positions of the busbar 112, the welding positions of the windings 102 are dispersed, and the insulation performance of the windings 102 is improved; and the high voltage terminal 115 is welded to the busbar 112 through the connector 114 to realize the power connection with other components.
[0040] It should be noted that, as Figures 4-5 As shown, the stator core 101 provided in this embodiment of the application has 36 stator slots 1011, and each stator slot 1011 contains a winding 102, thus including 36 windings 102. The windings 102 are divided into U-phase windings, V-phase windings and W-phase windings, so that the windings 102 are respectively connected to the corresponding busbars 112.
[0041] like Figure 2 As shown, busbar 112 includes: U-phase busbar 1121, V-phase busbar 1122, W-phase busbar 1123 and neutral busbar 1124. Among them, U-phase busbar 1121, V-phase busbar 1122, W-phase busbar 1123 and neutral busbar 1124 are all annular copper busbars. Neutral busbar 1124, U-phase busbar 1121, V-phase busbar 1122 and W-phase busbar 1123 are distributed in sequence from the outside to the inside along the radial direction of stator core 101, so that the windings 102 at the corresponding positions can be welded to the corresponding phase busbars, thereby dispersing the welding positions of the windings 102 and improving the insulation performance of the ends of the windings 102.
[0042] like Figure 2 As shown, one end of the U-phase winding is connected to the U-phase bus 1121, and the other end of the U-phase winding is connected to the neutral bus 1124; one end of the V-phase winding is connected to the V-phase bus 1122, and the other end of the V-phase winding is connected to the neutral bus 1124; one end of the W-phase winding is connected to the W-phase bus 1123, and the other end of the W-phase winding is connected to the neutral bus 1124, so as to form a closed current loop.
[0043] Specifically, such as Figure 7 As shown, the embodiment of this application includes 36 windings, wherein one end of the 1st, 4th, 7th, 10th, 13th, 16th, 19th, 22nd, 25th, 28th, 31st, and 34th windings is connected to the U-phase bus 1121, and the other end is connected to the neutral bus 1124; the 2nd, 5th, 8th, 11th, 14th, 17th, 20th, 23rd, 26th, and 34th windings are .... One end of the 29th, 32nd, and 35th bits is connected to the V-phase bus 1122, and the other end of the V-phase winding is connected to the neutral bus 1124; one end of the 3rd, 6th, 9th, 12th, 15th, 18th, 21st, 24th, 27th, 30th, 33rd, and 36th bits is connected to the W-phase bus 1123, and the other end of the W-phase winding is connected to the neutral bus 1124, so as to form a closed current loop.
[0044] like Figures 3-4As shown, the stator core 101 is provided with a first mounting ear 1013, and the distribution ring frame 111 is provided with a second mounting ear 1111. The distribution ring frame 111 installs the distribution ring 110 onto the stator core 101 through the corresponding installation of the second mounting ear 1111 and the first mounting ear 1013.
[0045] In some embodiments, such as Figures 3-4 As shown, there are four first mounting ears 1013 and four second mounting ears 1111, and the relative positions of the first mounting ears 1013 and the second mounting ears 1111 correspond one-to-one to improve the installation stability of the distribution ring 110 and the stator core 101.
[0046] like Figure 1 As shown, an oil pipe 104 is provided outside the stator core 101, and the oil pipe 104 has an oil inlet 1041 to allow cooling oil to flow through it. Two main oil ports 1110 are provided on the distribution ring frame 111. Two sets of oil spray holes 1042 are provided at the top part of the oil pipe 104 located in the direction of gravity of the stator core 101, and the oil spray holes 1042 correspond one-to-one with the main oil ports 1110. The cooling oil can flow along the oil pipe 104 and enter the main oil ports 1110 through the oil spray holes 1042 to cool the winding 102.
[0047] like Figure 1 , Figure 6 and Figure 8 As shown, the stator core 101 also includes a slot wedge 1012, which is used to close the circumferential side of the stator slot 1011 to achieve positioning and fixing of the winding 102 within the stator slot 1011; the stator assembly 100 also includes an insulating frame 105, and forms an annular oil passage with the distribution ring 110, the insulating frame 105, and the slot wedge 1012; Figure 1 As shown, this allows the cooling oil to enter through the main oil port 1110 and flow along the annular oil passage through the end faces of all windings 102.
[0048] In order to enable the cooling oil to cool the inside of the winding 102, such as Figure 6 , Figures 8-9 As shown, the stator core 101, the distribution ring 110 and the slot wedge 1012 form an in-slot oil passage, and the in-slot oil passage extends axially along the stator slot 1011 so that the cooling oil can flow through the interior of the winding 102 along the in-slot oil passage.
[0049] like Figures 8-10The insulating frame 105 is located on one side of the distribution ring 110 and has a through groove at the end near the main oil port 1110, so that the cooling oil can flow from the main oil port 1110 to the interior of the stator slot 1011 through the through groove. Since the slot wedge 1012 closes the side opening of the stator slot 1011 and the insulating frame 105 is sealed at the end away from the main oil port 1110, the cooling oil can only flow into the interior of the stator slot 1011 through the end of the stator slot 1011 near the distribution ring 110 during the flow of the annular oil channel, so as to achieve cooling of the interior of the winding 102 and improve the cooling effect of the winding 102.
[0050] After the cooling oil flows through the inside of winding 102, as Figures 8-9 , Figures 11-12 As shown, the insulating frame 105 also has a through groove at the other end away from the distribution ring 110, so that after the cooling oil flows through the inside of the winding 102, it flows out through the through groove and flows to the rotor assembly 200 and returns to the housing of the generator assembly, so as to complete the entire cooling oil flow process and improve the cooling effect on the winding 102.
[0051] In practice, such as Figures 8-9 As shown, the rotor assembly 200 includes a rotor shaft 201. The cooling oil in the rotor shaft 201 flows through the rotor oil passage 202. During the operation of the rotor assembly 200, the oil can be thrown onto the inner ring of the stator assembly 100 through the rotor oil passage 202 to achieve further cooling.
[0052] like Figure 1 As shown, a stator housing 103 is also provided on the outer ring of the stator core 101 to provide support and maintenance for the stator core 101.
[0053] In the operation of the generator assembly provided in this application embodiment, the insulation performance of the ends of the windings 102 is improved by welding multiple windings 102 to corresponding positions on the distribution ring 110. At the same time, cooling oil enters the annular oil passage through the main oil port 1110 on the distribution ring 110 and passes through the interior of the windings 102 to achieve cooling of the interior of the windings 102, thereby improving the cooling effect of the windings 102 and increasing the continuous power of the generator assembly.
[0054] This application also provides an automobile that includes the above-described generator assembly.
[0055] Since the aforementioned generator assembly includes the aforementioned effects, and the aforementioned automobile includes the aforementioned generator assembly, the aforementioned automobile also includes the same technical effects, which will not be elaborated here.
[0056] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A generator assembly characterized by, include: Rotationally fitted stator assembly (100) and rotor assembly (200); The stator assembly (100) includes: The stator core (101) has a plurality of stator slots (1011) for placing windings (102), and the windings (102) correspond one-to-one with the stator slots (1011); Distribution ring (110) is installed on the end face of the stator core (101). The distribution ring (110) is connected to the welding ends of all the windings (102), and the distribution ring (110) and the stator core (101) form an annular oil channel.
2. The generator assembly of claim 1, wherein, The distribution ring (110) includes: Distribution ring frame (111), the distribution ring frame (111) is detachably fixed to the end face of the stator core (101); Busbar (112), the busbar (112) is injection molded onto the distribution ring skeleton (111), and the busbar (112) is welded to the welding end of the winding (102), and the end face of the busbar (112) away from the winding (102) is sealed with potting compound (113); High voltage terminal (115), which is welded to the busbar (112) via connector (114).
3. The generator assembly of claim 2, wherein, The winding (102) includes a U-phase winding, a V-phase winding, and a W-phase winding; The busbar (112) includes a U-phase busbar (1121), a V-phase busbar (1122), a W-phase busbar (1123), and a neutral busbar (1124); the U-phase busbar (1121), the V-phase busbar (1122), the W-phase busbar (1123), and the neutral busbar (1124) are all annular copper busbars, and the neutral busbar (1124), the U-phase busbar (1121), the V-phase busbar (1122), and the W-phase busbar (1123) are distributed sequentially from the outside to the inside along the radial direction of the stator core (101); One end of the U-phase winding is connected to the U-phase busbar (1121), and the other end of the U-phase winding is connected to the neutral busbar (1124). One end of the V-phase winding is connected to the V-phase busbar (1122), and the other end of the V-phase winding is connected to the neutral busbar; One end of the W-phase winding is connected to the W-phase bus (1123), and the other end of the W-phase winding is connected to the neutral bus (1124).
4. The generator assembly of claim 2, wherein, The stator core (101) is provided with a first mounting lug (1013); The distribution ring skeleton (111) is provided with a second mounting ear (1111). The distribution ring skeleton (111) is mounted on the stator core (101) via the second mounting ear (1111) and the first mounting ear (1013).
5. The generator assembly of claim 2, wherein, The stator core (101) is provided with an oil pipe (104), and the oil pipe (104) has an oil inlet (1041) for introducing cooling oil. The distribution ring skeleton (111) has two main oil ports (1110). The oil pipe (104) has an oil injection hole (1042) at the top of the stator core (101) in the direction of gravity. There are two sets of oil injection holes (1042), and each oil injection hole (1042) corresponds to a main oil port (1110).
6. The generator assembly of claim 5, wherein, The stator core (101) also includes a slot wedge (1012) for closing the circumferential side of the stator slot (1011); The stator assembly (100) also includes an insulating frame (105); The distribution ring (110), the insulating skeleton (105), and the groove wedge (1012) form the annular oil passage.
7. The generator assembly of claim 6, wherein, The stator core (101), the distribution ring (110), and the slot wedge (1012) form an in-slot oil passage, which extends axially along the stator slot (1011). The cooling oil flows through the interior of the winding (102) along the oil passage in the groove.
8. The generator assembly of claim 6, wherein, The insulating frame (105) has a through groove so that the cooling oil flows through the through groove into the interior of the stator slot (1011).
9. The generator assembly of any one of claims 1-8, wherein, The stator core (101) is provided with a stator housing (103).
10. An automobile characterized by comprising: Includes the generator assembly as described in any one of claims 1-9.