Double-stator oil cooling motor

Abstract

The utility model relates to the technical field of motors, and discloses a double-stator oil cooling motor. The double-stator oil cooling motor comprises a first stator and a second stator, the first stator comprises a first machine shell assembly, a first main body part and a first assembling chamber are formed in the first machine shell assembly, a first stator winding is arranged in the first main body part, a first liquid cooling channel is formed in the first main body part, and the first liquid cooling channel is communicated with the first assembling chamber; the second stator comprises a second machine shell assembly, a second main body part and a second assembling chamber are formed in the second machine shell assembly, a second stator winding is arranged in the second main body part, a second liquid cooling channel is formed in the second main body part, and the second liquid cooling channel is communicated with the second assembling chamber; the first casing assembly is connected with the second casing assembly, so that the first assembling chamber and the second assembling chamber form an assembling cavity, and the end parts of the three-phase lines of the first stator winding and the second stator winding are correspondingly connected in the assembling cavity. According to the double-stator oil-cooled motor, the number of parts can be reduced, positions needing to be sealed are reduced, and the liquid leakage risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a double-stator oil-cooled motor. Background Art

[0002] Axial flux motors have the advantages of compact structure, small size, and high torque density, and are widely used in electric vehicles. The stator of the axial flux motor includes a housing assembly, a stator core and a stator winding arranged in the housing assembly. The stator winding has three-phase wires and is wound on the stator core. The ends of the three-phase wires are connected to an external power supply. The stator winding generates a lot of heat when working. Some axial flux motors use oil cooling to cool the stator.

[0003] For a dual-stator oil-cooled motor, the housing components of the two stators need to be connected to the oil inlet and outlet ports respectively. In addition, the housing components need to be equipped with a junction box, and the three-phase wires of the two stators extend out of the corresponding housing components and then extend into the junction box for connection. This structure not only leads to a large number of parts and a large space occupied by the dual-stator oil-cooled motor, but also requires many locations to be sealed, so the risk of leakage is also relatively high.

[0004] Therefore, a dual-stator oil-cooled motor is urgently needed to solve the above technical problems. Utility Model Content

[0005] The utility model aims to provide a double-stator oil-cooled motor, which saves the number of parts, reduces the positions that need to be sealed, and reduces the risk of leakage.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Double stator oil-cooled motor, including:

[0008] A first stator, comprising a first housing assembly, wherein the first housing assembly is formed with a first main body and a first assembly chamber, wherein a first stator winding is disposed in the first main body and a first liquid cooling channel is formed, and the first liquid cooling channel is communicated with the first assembly chamber;

[0009] A second stator, comprising a second housing assembly, wherein the second housing assembly is formed with a second main body and a second assembly chamber, wherein a second stator winding is arranged in the second main body and a second liquid cooling channel is formed, and the second liquid cooling channel is communicated with the second assembly chamber;

[0010] The first housing component and the second housing component are arranged axially and connected so that the first assembly chamber and the second assembly chamber are connected to form an assembly cavity, and the ends of the three-phase lines of the first stator winding and the ends of the three-phase lines of the second stator winding are correspondingly connected in the assembly cavity.

[0011] As an optional scheme, the first assembly chamber and the second assembly chamber are arranged axially and abut against each other, and the first assembly chamber and the second assembly chamber are respectively provided with a first opening and a second opening on the end surfaces facing each other, and the first opening and the second opening are relatively arranged to connect the first assembly chamber and the second assembly chamber.

[0012] As an optional solution, a first sealing member is further included, and the first sealing member is arranged between the end surface of the first assembly chamber and the end surface of the second assembly chamber, and is respectively arranged around the first opening and the second opening.

[0013] As an optional scheme, a first liquid port connected to the first liquid cooling channel is provided on the first main body part, and a second liquid port connected to the second liquid cooling channel is provided on the second main body part, one of the first liquid port and the second liquid port is used for cooling liquid to enter, and the other is used for cooling liquid to discharge.

[0014] As an optional solution, the first housing component includes a first shell and a first end cover, the first shell includes a first accommodating chamber and the first assembly chamber, a first assembly opening is arranged on a side of the first accommodating chamber facing the second housing component, the first end cover blocks the first assembly opening and forms the first main body, and the first assembly chamber is arranged on a radial side of the first accommodating chamber and is connected through a first communicating hole;

[0015] The second housing component includes a second shell and a second end cover, the second shell includes a second accommodating chamber and the second assembly chamber, the second accommodating chamber is provided with a second assembly port on a side facing the first housing component, the second end cover blocks the second assembly port and forms the second main body, and the second assembly chamber is provided on one side of the second accommodating chamber in a radial direction and is connected through a second connecting hole.

[0016] As an optional solution, a first process hole is provided on a side of the first assembly chamber away from the first accommodating chamber, the first process hole is arranged opposite to the first connecting hole, and the first process hole is sealed by a first blocking plate; and / or

[0017] A second process hole is arranged on a side of the second assembly chamber away from the second accommodating chamber, the second process hole is arranged opposite to the second connecting hole, and the second process hole is sealed by a second blocking plate.

[0018] As an optional solution, the first assembly opening of the first accommodation chamber is in a circular ring shape, and the first end cover is in a circular ring shape; and / or

[0019] The second assembly opening of the second accommodation chamber is in the shape of a circular ring, and the second end cover is in the shape of a circular ring.

[0020] As an optional solution, the dual-stator oil-cooled motor further includes a wiring assembly, and the wiring assembly includes:

[0021] An insulating member, installed in the assembly cavity;

[0022] first connecting terminals, to which ends of the three-phase wires of the first stator winding are respectively connected;

[0023] second connecting terminals, to which ends of the three-phase lines of the second stator winding are respectively connected;

[0024] A fastener is used to connect the first wiring terminal and the second wiring terminal of the corresponding phase in series and fix them on the insulating member.

[0025] As an optional solution, a wire outlet hole communicating with the assembly cavity is provided on the side wall of the first assembly chamber or the second assembly chamber, and the dual-stator oil-cooled motor further includes a wire outlet assembly, which includes:

[0026] A blocking piece, wherein the blocking piece blocks the wire outlet hole;

[0027] A lead terminal has one end connected to the first wiring terminal and the second wiring terminal of the corresponding phase through the fastener, and the other end passes through the blocking piece to extend out of the assembly cavity.

[0028] As an optional solution, a second process hole is provided on the first assembly chamber or the second assembly chamber, the second process hole is arranged opposite to the fastener, and the second process hole is sealed by a second blocking plate.

[0029] The beneficial effects of the utility model are:

[0030] The double-stator oil-cooled motor of the utility model is provided with a first assembly chamber connected to the first liquid cooling channel on the first housing component, and a second assembly chamber connected to the second liquid cooling channel on the second housing component, and after the first stator and the second stator are installed, the first assembly chamber and the second assembly chamber form an assembly cavity. The first liquid cooling channel and the second liquid cooling channel can be connected through the assembly cavity, so the entire double-stator oil-cooled motor only needs to be provided with an oil inlet port and an oil outlet port to achieve the conduction of the cooling oil circuit, and the assembly cavity also serves to accommodate the connection part of the three-phase line pairs of the two stator windings, thereby not only reducing the number of parts of the double-stator oil-cooled motor, making the structure of the double-stator oil-cooled motor more compact, but also reducing the number of positions that need to be sealed in the double-stator oil-cooled motor, reducing the risk of leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1It is a structural schematic diagram of a double-stator oil-cooled motor provided by a specific embodiment of the utility model;

[0032] Figure 2 It is a structural schematic diagram of a first stator provided in a specific embodiment of the utility model;

[0033] Figure 3 It is a structural schematic diagram of a second stator provided in a specific embodiment of the utility model;

[0034] Figure 4 It is a schematic cross-sectional structure diagram of a double-stator oil-cooled motor provided by a specific embodiment of the utility model;

[0035] Figure 5 yes Figure 4 Enlarged view of point A in .

[0036] In the figure:

[0037] 10. First stator;

[0038] 11. a first housing assembly; 110. a first main body;

[0039] 111, first housing; 1111, first assembly chamber; 1112, first accommodation chamber; 1113, first opening; 1114, first sink; 1115, first process hole; 1116, first communication hole;

[0040] 112. a first end cover;

[0041] 113. The first blocking plate;

[0042] 12. first stator core; 13. first stator winding; 131. first end; 14. first liquid cooling channel; 15. first liquid pipe;

[0043] 20. Second stator;

[0044] 21. a second housing assembly; 210. a second main body;

[0045] 211, second housing; 2111, second assembly chamber; 2112, second accommodation chamber; 2113, second opening; 2114, second sink; 2115, second process hole; 2116, second communication hole; 2117, wire outlet hole;

[0046] 212, second end cover;

[0047] 213, second blocking plate;

[0048] 22. second stator core; 23. second stator winding; 231. second end; 24. second liquid cooling channel; 25. second liquid pipe;

[0049] 30. Assembly cavity; 40. First sealing member;

[0050] 50. Outlet assembly; 51. Blocking member; 52. Lead terminal; 53. Cover; 54. Second sealing member;

[0051] 60. Wiring assembly; 61. First wiring terminal; 62. Second wiring terminal; 63. Insulator; 64. Fastener;

[0052] 70. Output shaft; 80. Rotor. DETAILED DESCRIPTION

[0053] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0054] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0056] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0057] This embodiment provides a dual-stator oil-cooled motor, specifically, as Figure 1-Figure 4 As shown, the double-stator oil-cooled motor includes a first stator 10, a second stator 20, a rotor 80 and an output shaft 70. The output shaft 70 is connected to the rotor 80, the first stator 10, the rotor 80 and the second stator 20 are arranged axially, and the first stator 10 and the second stator 20 are respectively arranged on both sides of the rotor 80, the output shaft 70 penetrates the first stator 10 and the second stator 20 axially, the output shaft 70 and the rotor 80 can rotate synchronously relative to the first stator 10 and the second stator 20, and the first stator 10 and the second stator 20 are roughly annular. After the housing of the first stator 10 and the housing of the second stator 20 are connected, an accommodating space is formed between the first stator 10 and the second stator 20, and the rotor 80 is arranged in the accommodating space.

[0058] like Figure 1 , Figure 2 and Figure 4 As shown, the first stator 10 includes a first housing assembly 11, a first stator core 12 and a first stator winding 13. The first housing assembly 11 includes a first main body 110, which is roughly constructed in a circular ring shape and forms a receiving cavity. The first stator core 12 and the first stator winding 13 are arranged in the first main body 110. The first stator winding 13 includes a three-phase line, and the end of the three-phase line needs to extend to the outside of the first main body 110 to be connected to the power supply. A first liquid cooling channel 14 is also formed in the first main body 110. The first liquid cooling channel 14 is used for cooling oil to flow and cool the first stator core 12 and the first stator winding 13 to prevent the double stator oil-cooled motor from being damaged due to local overheating. In some embodiments, the first liquid cooling channel 14 is directly formed by the first housing assembly 11 and the first stator core 12 and the first stator winding 13 therein. In some other embodiments, some drainage plate structures may be further provided in the first housing assembly 11 , and the plate structure, the first housing assembly 11 , the first stator core 12 and the first stator winding 13 are jointly provided to form a first liquid cooling channel 14 .

[0059] like Figure 1 , Figure 3 and Figure 4As shown, the second stator 20 includes a second housing assembly 21, a second stator core 22 and a second stator winding 23. The second housing assembly 21 is connected to the first housing assembly 11, thereby realizing the connection between the first stator 10 and the second stator 20. The second housing assembly 21 includes a second main body 210, which is roughly configured as a circular ring and forms an accommodating cavity. The second stator core 22 and the second stator winding 23 are arranged in the second main body 210. A second liquid cooling channel 24 is also formed in the second main body 210. The second liquid cooling channel 24 is used for cooling oil to flow and cool the second stator core 22 and the second stator winding 23 to prevent the double-stator oil-cooled motor from being damaged due to local overheating. In some embodiments, the second liquid cooling channel 24 is directly formed by the second housing assembly 21 and the second stator core 22 and the second stator winding 23 therein. In other embodiments, some drainage plate structures may be added to the second housing assembly 21. The plate structure, the second housing assembly 21, the second stator core 22 and the second stator winding 23 are jointly formed to form the second liquid cooling channel 24. The second stator winding 23 also includes a three-phase line. The ends of the three-phase lines of the second stator 20 need to extend to the outside of the second main body 210 to be connected to the power supply.

[0060] In the prior art, the housing components of the two stators need to be provided with oil inlet ports and oil outlet ports connected to the internal liquid cooling channel. In addition, the housing components need to be equipped with a junction box, and the three-phase wires of the two stators extend out of the corresponding housing components and then extend into the junction box for connection. This structure not only leads to a large number of parts and a large space occupied by the double-stator oil-cooled motor, but also requires many locations to be sealed, so the risk of leakage is also relatively high.

[0061] Preferably, if Figure 2-Figure 4As shown, in this embodiment, the first housing assembly 11 further includes a first assembly chamber 1111, which is arranged on one side of the first main body 110 in the radial direction, and the first assembly chamber 1111 is connected to the first liquid cooling channel 14. The second housing assembly 21 further includes a second assembly chamber 2111, which is arranged on one side of the second main body 210 in the radial direction, and the second assembly chamber 2111 is connected to the second liquid cooling channel 24. After the first housing assembly 11 of the first stator 10 is connected to the second housing assembly 21 of the second stator 20, the first assembly chamber 1111 and the second assembly chamber 2111 are connected to form an assembly chamber 30, at which time the first liquid cooling channel 14 and the second liquid cooling channel 24 can be connected through the assembly chamber 30. Therefore, in order to realize the circulation of cooling oil in the liquid cooling channel, the double-stator oil-cooled motor only needs to set an oil inlet and an oil outlet to be connected to the external oil supply system respectively, thereby reducing the number of components and the number of sealing positions, and reducing the risk of leakage. In addition, the ends of the three-phase wires of the first stator winding 13 and the ends of the three-phase wires of the second stator winding 23 are correspondingly connected in the assembly cavity 30. That is, the connection between the first liquid cooling channel 14 and the second liquid cooling channel 24 and the connection of the three-phase wires of the first stator winding 13 and the second stator winding 23 share the assembly cavity 30, further reducing the number of parts of the dual-stator oil-cooled motor and making the structure of the dual-stator oil-cooled motor more compact.

[0062] like Figure 1-Figure 3 As shown, the first main body 110 is provided with a first liquid port connected to the first liquid cooling channel 14, and the second main body 210 is provided with a second liquid port connected to the second liquid cooling channel 24. One of the first liquid port and the second liquid port is used for the coolant to enter, and the other is used for the coolant to discharge, so that the cooling oil can flow between the liquid cooling channels. In this embodiment, the first liquid port is connected to the first liquid pipe 15, and the second liquid port is connected to the second liquid pipe 25. The first liquid pipe 15 and the second liquid pipe 25 are used to be connected to the external oil supply system respectively. Optionally, the first liquid pipe 15 can be provided for liquid inlet and the second liquid pipe 25 can be provided for liquid outlet, or the second liquid pipe 25 can be provided for liquid inlet and the first liquid pipe 15 can be provided for liquid outlet, which is not specifically limited here.

[0063] In this embodiment, the first liquid passage port is arranged on the circumferential surface of the first main body 110, and the first liquid passage pipe 15 is connected to the circumferential surface of the first main body 110. The second liquid passage port is arranged on the circumferential surface of the second main body 210, and the second liquid passage pipe 25 is connected to the circumferential surface of the second main body 210. Such an arrangement can ensure that the dual-stator oil-cooled motor as a whole maintains a relatively small axial dimension, so that the dual-stator oil-cooled motor can be applied to more scenarios. Optionally, the first liquid passage pipe 15 and the second liquid passage pipe 25 are arranged along the axial direction of the dual-stator oil-cooled motor, that is, the connecting line between the two is parallel to the axial direction of the dual-stator oil-cooled motor. Such an arrangement can further improve the structural compactness of the dual-stator oil-cooled motor. In other embodiments, the first liquid passage pipe 15 and the second liquid passage pipe 25 can also be arranged staggered along the circumferential direction of the dual-stator oil-cooled motor, which is not specifically limited here.

[0064] like Figure 2 and Figure 4 As shown, the first housing assembly 11 includes a first shell 111 and a first end cover 112. The first housing 111 includes a first accommodation chamber 1112 and the above-mentioned first assembly chamber 1111. The first accommodation chamber 1112 is provided with a first assembly opening on one side facing the second housing assembly 21. The first assembly opening is used for installing the first stator core 12 and the first stator winding 13. The first end cover 112 blocks the first assembly opening and thus forms the first main body 110 of the first housing assembly 11. The first assembly chamber 1111 is provided on one side of the first accommodation chamber 1112 in the radial direction and is separated by a first partition. The first connecting hole 1116 is provided on the first partition to connect the first assembly chamber 1111 with the first accommodation chamber 1112.

[0065] Preferably, the first shell 111 is integrally formed, which not only ensures good sealing between the first accommodation chamber 1112 and the first assembly chamber 1111, but also eliminates the need to provide an additional sealing structure between the first accommodation chamber 1112 and the first assembly chamber 1111. In this embodiment, the first shell 111 is made of metal material, has good structural strength, and is low in cost. Preferably, a first process hole 1115 is provided on the side of the first assembly chamber 1111 away from the first accommodation chamber 1112, the first process hole 1115 is arranged opposite to the first connecting hole 1116, and the first process hole 1115 is sealed by the first blocking plate 113. For the first shell 111 made of metal material, by providing the first process hole 1115, the processing difficulty of the first connecting hole 1116 is reduced, thereby correspondingly reducing the manufacturing cost of the dual-stator oil-cooled motor. Optionally, the first blocking plate 113 is made of the same metal material as the first shell 111, and the first blocking plate 113 is welded to the first shell 111, thereby ensuring the sealing of the first process hole 1115. Of course, in other embodiments, the first shell 111 may also be made of a composite material and formed by prepreg, in which case the first process hole 1115 may not be required.

[0066] Preferably, the first assembly opening is configured as a circular ring, and correspondingly, the first end cover 112 is configured as a circular ring, so that the first end cover 112 can seal the first assembly opening and reduce the difficulty of processing the first end cover 112 .

[0067] like Figure 3 and Figure 4 As shown, the second housing assembly 21 includes a second housing 211 and a second end cover 212. The second housing 211 includes a second accommodation chamber 2112 and the second assembly chamber 2111 described above. A second assembly opening is provided on the side of the second accommodation chamber 2112 facing the first housing assembly 11. The second assembly opening is used for installing the second stator core 22 and the second stator winding 23. The second end cover 212 blocks the second assembly opening to form the second main body 210 of the second housing assembly 21. The second assembly chamber 2111 is provided on one side of the second accommodation chamber 2112 in the radial direction and is separated by a second partition. A second connecting hole 2116 is provided on the second partition to connect the second accommodation chamber 2112 with the second assembly chamber 2111.

[0068] Preferably, the second housing 211 is integrally formed, which not only ensures good sealing between the second accommodation chamber 2112 and the second assembly chamber 2111, but also eliminates the need to provide an additional sealing structure between the second accommodation chamber 2112 and the second assembly chamber 2111. Optionally, in this embodiment, the second housing 211 is made of metal material, which has good structural strength and low cost. Preferably, a second process hole 2115 is provided on the side of the second assembly chamber 2111 away from the second accommodation chamber 2112, and the second process hole 2115 is arranged opposite to the second connecting hole 2116, and the second process hole 2115 is sealed by the second blocking plate 213. For the second housing 211 made of metal material, by providing the second process hole 2115, the processing difficulty of the second connecting hole 2116 is reduced, thereby correspondingly reducing the manufacturing cost of the dual-stator oil-cooled motor. Optionally, the second blocking plate 213 is made of the same metal material as the second shell 211, and the second blocking plate 213 is welded to the second shell 211, thereby improving the sealing performance at the second process hole 2115. Of course, in other embodiments, the second shell 211 may also be made of a composite material and formed by prepreg, in which case the second process hole 2115 may not be required.

[0069] Preferably, the second assembly opening is configured as a circular ring, and correspondingly, the second end cover 212 is configured as a circular ring, so that the second end cover 212 can seal the second assembly opening and reduce the difficulty of processing the second end cover 212 .

[0070] Preferably, if Figure 2-Figure 4As shown, the first assembly chamber 1111 and the second assembly chamber 2111 are arranged axially and abut against each other, and the first assembly chamber 1111 and the second assembly chamber 2111 are respectively provided with a first opening 1113 and a second opening 2113 on their end surfaces facing each other, and the first opening 1113 and the second opening 2113 are arranged relative to each other so that the first assembly chamber 1111 and the second assembly chamber 2111 are connected, that is, after the first housing component 11 and the second housing component 21 are connected, the assembly chamber 30 is automatically formed, and the structure is simple and the assembly is convenient. Preferably, the shape and size of the first opening 1113 are consistent with the shape and size of the second opening 2113, so as to improve the sealing of the assembly chamber 30. In this embodiment, the first opening 1113 and the second opening 2113 are roughly rectangular, which is convenient for processing. In other embodiments, the first opening 1113 and the second opening 2113 can also be set to a circular shape or other shapes, which are not specifically limited here.

[0071] Preferably, Figure 2-Figure 4 As shown, the double-stator oil-cooled motor also includes a first seal 40, which is arranged between the end surface of the first assembly chamber 1111 and the end surface of the second assembly chamber 2111, and is respectively arranged around the first opening 1113 and the second opening 2113. By setting the first seal 40, the sealing of the assembly chamber 30 can be ensured to avoid leakage at this position. Optionally, the first seal 40 can be a rubber ring. In this embodiment, only one first seal 40 is arranged between the first assembly chamber 1111 and the second assembly chamber 2111. In other embodiments, two or more first seals 40 can be concentrically arranged between the first assembly chamber 1111 and the second assembly chamber 2111 to further improve the sealing of the assembly chamber 30.

[0072] Preferably, at least one of the end surface of the first assembly chamber 1111 facing the second assembly chamber 2111 and the end surface of the second assembly chamber 2111 facing the first assembly chamber 1111 is provided with a recessed groove, and the first seal 40 is installed in the recessed groove. The first seal 40 can be positioned and limited by providing the recessed groove, which not only improves the assembly convenience of the double-stator oil-cooled electronic motor, but also prevents the first seal 40 from moving in position during the use of the motor, thereby improving the reliability of the seal. In this embodiment, if Figure 2 As shown, a first sink 1114 is provided on the end surface of the first assembly chamber 1111 facing the second assembly chamber 2111. Figure 3 As shown, the second assembly chamber 2111 is provided with a second sink groove 2114 on the end surface facing the first assembly chamber 1111, and the first sink groove 1114 and the second sink groove 2114 are opposite to each other and form a space for accommodating the first sealing member 40. Of course, in other embodiments, it is also possible to choose to provide a sink groove only on the end surface of the first assembly chamber 1111 or the end surface of the second assembly chamber 2111, which is not specifically limited here.

[0073] like Figure 4 and Figure 5 As shown, the end of the three-phase line of the first stator winding 13 (hereinafter referred to as the first end 131) extends from the first connecting hole 1116 into the assembly cavity 30, and the end of the three-phase line of the second stator winding 23 (hereinafter referred to as the second end 231) extends from the second connecting hole 2116 into the assembly cavity 30. In order to achieve the connection between the three first ends 131 of the first stator winding 13 and the three second ends 231 of the second stator winding 23, the dual-stator oil-cooled motor further includes a wiring assembly 60 disposed in the assembly cavity 30.

[0074] Specifically, the wiring assembly 60 includes an insulating member 63, a first terminal 61, a second terminal 62 and a fastener 64. The insulating member 63 is installed in the assembly cavity 30, and three first terminals 61 are provided. The three first ends 131 of the first stator winding 13 are each connected to a first terminal 61. The second terminals 62 are also provided with three, and the three second ends 231 of the second stator winding 23 are each connected to a second terminal 62. The fasteners 64 are also provided with three, and each fastener 64 connects the first terminal 61 and the second terminal 62 of the corresponding phase in series and fixes them on the insulating member 63. The corresponding first terminal 61 and the second terminal 62 are fixed to the insulating member 63 by the fastener 64, which can not only make the first end 131 and the second end 231 of the corresponding phase electrically connected, but also avoid short circuits in the phase lines. Optionally, the insulating member 63 can be made of materials such as rubber and plastic. The insulating member 63 can be fixed in the assembly cavity 30 by bonding. Optionally, the first end 131 may be connected to the first wiring terminal 61 by plugging and / or welding. The second end 231 may be connected to the second wiring terminal 62 by plugging and / or welding.

[0075] In this embodiment, the insulating member 63 is connected to the inner wall of the second assembly chamber 2111. The insulating member 63 is provided with a threaded hole, and the fastener 64 is a bolt. The fastener 64 is sequentially passed through the corresponding first terminal 61 and the second terminal 62 and is threadedly connected to the corresponding threaded hole. Preferably, the second process hole 2115 is arranged opposite to the fastener 64, so that the fastening tool can extend into the assembly cavity 30 through the second process hole 2115 and operate the fastener 64, which improves the convenience of assembly. In other embodiments, the insulating member 63 can also be connected to the inner wall of the second assembly chamber 2111. In this case, the fastener 64 can be opposite to the first process hole 1115.

[0076] In order to realize that the three-phase lines of the first stator winding 13 and the second stator winding 23 are connected to the external power lines respectively, as shown in FIG. Figure 4 and Figure 5As shown, a wire outlet hole 2117 communicating with the assembly cavity 30 is provided on the side wall of the second assembly chamber 2111, and the dual-stator oil-cooled motor also includes a wire outlet assembly 50, and the wire outlet assembly 50 includes a plugging piece 51 and a lead terminal 52, wherein the plugging piece 51 blocks the wire outlet hole 2117, and three lead terminals 52 are provided, and one end of each lead terminal 52 is connected to the first terminal 61 and the second terminal 62 of the corresponding phase through a fastener 64, and the other end passes through the plugging piece 51 to extend out of the assembly cavity 30. Optionally, the plugging piece 51 is made of elastic insulating material, which can not only ensure good sealing at the wire outlet hole 2117, but also avoid short circuits between the lead terminals 52. Optionally, the plugging piece 51 is formed by injection molding, and the three lead terminals 52 can be integrally formed with the plugging piece 51 as inserts.

[0077] Preferably, if Figure 5 As shown, the outlet assembly 50 also includes a cover 53 and a second seal 54. The cover 53 is connected to the outside of the second assembly chamber 2111 and is covered on the outside of the blocking member 51 and the lead terminal 52. The second seal 54 is embedded in the cover 53. The external power line passes through the second seal 54 and extends into the cover 53 and is connected to the corresponding lead terminal 52. By providing the cover 53 and the second seal 54, the connection position between the lead terminal 52 and the external power line is protected and sealed, thereby improving the safety of the dual-stator oil-cooled motor. Optionally, three second seals 54 are provided to allow the three-phase power lines to pass through respectively. In other embodiments, the second seal can also be an integral component.

[0078] It is understandable that, in other embodiments, the wire outlet hole 2117 may also be provided on the side wall of the first assembly chamber 1111 , and in this case, the cover shell 53 is also connected corresponding to the first assembly chamber 1111 .

[0079] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the field, according to the idea of ​​the utility model, there will be changes in the specific implementation methods and application scopes, and the content of this specification should not be understood as limiting the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. Double stator oil-cooled motor, characterized in that: include: A first stator (10) comprises a first housing assembly (11), wherein the first housing assembly (11) is formed with a first main body (110) and a first assembly chamber (1111), a first stator winding (13) is arranged in the first main body (110) and a first liquid cooling channel (14) is formed, and the first liquid cooling channel (14) is communicated with the first assembly chamber (1111); A second stator (20), comprising a second housing assembly (21), wherein the second housing assembly (21) is formed with a second main body (210) and a second assembly chamber (2111), a second stator winding (23) is arranged in the second main body (210) and a second liquid cooling channel (24) is formed, and the second liquid cooling channel (24) is communicated with the second assembly chamber (2111); The first housing component (11) and the second housing component (21) are arranged axially and connected, so that the first assembly chamber (1111) and the second assembly chamber (2111) are connected to form an assembly cavity (30), and the ends of the three-phase lines of the first stator winding (13) and the ends of the three-phase lines of the second stator winding (23) are correspondingly connected in the assembly cavity (30).

2. The double-stator oil-cooled motor according to claim 1, characterized in that: The first assembly chamber (1111) and the second assembly chamber (2111) are arranged axially and abut against each other. The first assembly chamber (1111) and the second assembly chamber (2111) are respectively provided with a first opening (1113) and a second opening (2113) on their end surfaces facing each other. The first opening (1113) and the second opening (2113) are arranged opposite to each other so that the first assembly chamber (1111) and the second assembly chamber (2111) are connected.

3. The double-stator oil-cooled motor according to claim 2, characterized in that: It also includes a first sealing member (40), which is arranged between the end surface of the first assembly chamber (1111) and the end surface of the second assembly chamber (2111), and is respectively arranged around the first opening (1113) and the second opening (2113).

4. The double-stator oil-cooled motor according to claim 1, characterized in that: The first main body (110) is provided with a first liquid port connected to the first liquid cooling channel (14), and the second main body (210) is provided with a second liquid port connected to the second liquid cooling channel (24), one of the first liquid port and the second liquid port is used for cooling liquid to enter, and the other is used for cooling liquid to discharge.

5. The double-stator oil-cooled motor according to any one of claims 1 to 4, characterized in that: The first housing component (11) comprises a first shell (111) and a first end cover (112); the first shell (111) comprises a first accommodation chamber (1112) and the first assembly chamber (1111); a first assembly opening is arranged on a side of the first accommodation chamber (1112) facing the second housing component (21); the first end cover (112) blocks the first assembly opening and forms the first main body (110); the first assembly chamber (1111) is arranged on a radial side of the first accommodation chamber (1112) and is connected via a first communication hole (1116); The second housing component (21) comprises a second shell (211) and a second end cover (212); the second shell (211) comprises a second accommodating chamber (2112) and the second assembly chamber (2111); a second assembly opening is arranged on a side of the second accommodating chamber (2112) facing the first housing component (11); the second end cover (212) blocks the second assembly opening and forms the second main body (210); the second assembly chamber (2111) is arranged on a radial side of the second accommodating chamber (2112) and is connected via a second connecting hole (2116).

6. The double-stator oil-cooled motor according to claim 5, characterized in that: A first process hole (1115) is provided on a side of the first assembly chamber (1111) facing away from the first accommodation chamber (1112), the first process hole (1115) is arranged opposite to the first connecting hole (1116), and the first process hole (1115) is sealed by a first blocking plate (113); and / or A second process hole (2115) is arranged on a side of the second assembly chamber (2111) away from the second accommodating chamber (2112); the second process hole (2115) is arranged opposite to the second connecting hole (2116); and the second process hole (2115) is sealed by a second blocking plate (213).

7. The double-stator oil-cooled motor according to claim 5, characterized in that: The first assembly opening of the first accommodating chamber (1112) is in the shape of a circular ring, and the first end cover (112) is in the shape of a circular ring; and / or The second assembly opening of the second accommodating chamber (2112) is in the shape of a circular ring, and the second end cover (212) is in the shape of a circular ring.

8. The double-stator oil-cooled motor according to any one of claims 1 to 4, characterized in that: The dual-stator oil-cooled motor further comprises a wiring assembly (60), wherein the wiring assembly (60) comprises: An insulating member (63) installed in the assembly cavity (30); first connecting terminals (61), to which ends of the three-phase wires of the first stator winding (13) are respectively connected; second connecting terminals (62), to which ends of the three-phase wires of the second stator winding (23) are respectively connected; A fastener (64) connects the first connecting terminal (61) and the second connecting terminal (62) of the corresponding phase in series and fixes them on the insulating member (63).

9. The double-stator oil-cooled motor according to claim 8, characterized in that: A wire outlet hole (2117) communicating with the assembly cavity (30) is provided on a side wall of the first assembly chamber (1111) or the second assembly chamber (2111). The dual-stator oil-cooled motor further comprises a wire outlet assembly (50). The wire outlet assembly (50) comprises: A blocking member (51), wherein the blocking member (51) blocks the wire outlet hole (2117); A lead terminal (52) has one end connected to the first wiring terminal (61) and the second wiring terminal (62) of the corresponding phase through the fastener (64), and the other end passes through the blocking member (51) to extend out of the assembly cavity (30).

10. The double-stator oil-cooled motor according to claim 8, characterized in that: The first assembly chamber (1111) or the second assembly chamber (2111) is provided with a second process hole (2115), the second process hole (2115) is arranged opposite to the fastener (64), and the second process hole (2115) is sealed by a second blocking plate (213).

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