Motor, motor cooling system and automobile

Abstract

The utility model provides a motor, a motor cooling system and an automobile, and relates to the technical field of motor heat dissipation. The motor comprises a motor shell and a stator assembly. The motor shell comprises a first end cover and a motor inner shell. The first end cover and the motor inner shell are integrally formed. The stator assembly is installed in a first cavity in the motor inner shell. The first end cover is perpendicular to the motor inner shell, a first oil inlet hole and a first oil outlet hole are formed in the first end cover, and a first open hole is formed in the motor inner shell. The first oil inlet hole, the first cavity, the first opening hole and the first oil outlet hole are communicated in sequence to form a first cooling oil channel so that cooling oil can cool the stator assembly. When the motor is cooled, the stator assembly can be cooled by directly introducing cooling oil from the first oil inlet hole, the cooling effect is good, and an oil injection ring does not need to be installed independently.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor heat dissipation technical field, specifically, relate to a kind of motor, motor cooling system and automobile. BACKGROUND

[0002] With the improvement of people's environmental awareness, electric vehicles occupy a larger and larger share in the automobile market. Motor cooling is a very important part of electric vehicle technology, mainly including air cooling, water cooling and oil cooling and other ways. Among them, oil cooling is the most commonly used cooling method in motor cooling technology.

[0003] However, oil cooling generally needs to install oil injection ring and other devices on the motor separately, and the implementation process is relatively complex, and the cooling effect is general. INVENTION CONTENTS

[0004] The utility model aims at providing a kind of motor, motor cooling system and automobile, can at least partially solve the above technical problem.

[0005] Firstly, the utility model provides a kind of motor, the motor includes motor shell and stator assembly;The motor shell includes first end cover and motor inner shell;The first end cover and the motor inner shell are integrally formed;

[0006] The stator assembly is installed in the first cavity inside the motor inner shell;

[0007] The first end cover is perpendicular to the motor inner shell, and the first end cover is provided with first oil inlet hole and first oil outlet hole, and the motor inner shell is provided with first aperture;

[0008] The first oil inlet hole, the first cavity, the first aperture and the first oil outlet hole are sequentially communicated, to form first cooling oil channel, so that cooling oil cools the stator assembly.

[0009] Optionally, the motor shell further includes motor shell, the first end cover, the motor shell and the motor inner shell are integrally formed;The first end cover is perpendicular to the motor inner shell and the motor shell;

[0010] The motor shell is sleeved on the motor inner shell, and a second cavity is formed between the motor inner shell and the motor shell;

[0011] The motor shell is provided with liquid inlet hole and liquid outlet hole, and the liquid inlet hole, the second cavity and the liquid outlet hole are sequentially communicated to form cooling liquid channel.

[0012] Optionally, spiral protrusion is arranged on the inner wall of the motor shell;

[0013] The helical protrusion is close to the motor inner shell, and the motor inner shell and the motor outer shell form the second cavity.

[0014] Optionally, the motor further comprises a rotor, the rotor is arranged in a third cavity inside the stator assembly, the rotor comprises rotor laminations, a second end cover and a rotating shaft;

[0015] The rotating shaft is arranged in the rotor laminations and the second end cover and is perpendicular to the rotor laminations and the second end cover;

[0016] The rotating shaft is arranged in the rotor laminations and the second end cover and is perpendicular to the rotor laminations and the second end cover;

[0017] The second end cover is provided with a third opening;

[0018] The second oil inlet hole, the second opening, the third opening and the first oil outlet hole are sequentially communicated to form a second cooling oil channel.

[0019] Optionally, the rotating shaft is a hollow structure, and the second oil inlet hole is located at one end of the rotating shaft;

[0020] The third opening is arranged on the shaft body of the rotating shaft and communicates the rotor laminations and a fourth cavity in the rotating shaft;

[0021] Optionally, the motor further comprises a motor bearing, and the rotating shaft is further provided with a fourth opening;

[0022] The motor bearing is in communication with the fourth opening.

[0023] Optionally, the motor bearing is sleeved on the other end of the rotating shaft opposite to the second oil inlet hole;

[0024] The fourth opening is arranged on the shaft body of the rotating shaft and is located between the motor bearing and the third opening, and the fourth opening communicates the bearing and the fourth cavity.

[0025] Optionally, the motor shell further comprises a third end cover, the first end cover, the third end cover and the motor inner shell are integrally formed;

[0026] The third end cover is arranged relative to the first end cover, and the third end cover is provided with a second oil outlet hole;

[0027] The first oil inlet hole, the first cavity, the first opening and the second oil outlet hole are sequentially communicated to form a third cooling oil channel.

[0028] In a second aspect, the utility model provides a kind of motor cooling system, the motor cooling system includes liquid storage device, oil storage device and any one of the motor described above.

[0029] In a third aspect, the utility model provides a kind of automobile, and the automobile includes above-mentioned motor cooling system.

[0030] The motor, motor cooling system and automobile provided by the utility model have the beneficial effects that:

[0031] By setting the first oil inlet hole, the first oil outlet hole on the first end cover of the motor, and setting the first opening on the motor inner shell, the first oil inlet hole, the first cavity inside the motor inner shell, the first opening and the first oil outlet hole are sequentially communicated to form the first cooling oil channel.The cooling of the motor can be completed by directly passing cooling oil into the first oil inlet hole when cooling the motor, the cooling effect is good, and it is not necessary to separately install the oil injection ring. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced to the drawings needed to be used in the embodiments, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for the ordinary skilled person in the art, under the premise of not paying the creative labor, other related drawings can also be obtained according to these drawings.

[0033] Figure 1 A cross-sectional view of a motor is provided for the embodiments of the utility model;

[0034] Figure 2 A cross-sectional view of a motor shell is provided for the embodiments of the utility model;

[0035] Figure 3 A cross-sectional view of a spiral protrusion is provided for the embodiments of the utility model;

[0036] Figure 4 A cross-sectional view of a rotor is provided for the embodiments of the utility model;

[0037] Figure 5 A schematic view of a rotating shaft is provided for the embodiments of the utility model;

[0038] Figure 6 An architecture diagram of a motor cooling system is provided for the embodiments of the utility model.

[0039] Icon: 01-motor; 10-motor housing; 11-first end cover; 111-first oil inlet hole; 112-first oil outlet hole; 12-motor inner housing; 121-first cavity; 122-first opening; 13-motor outer housing; 131-second cavity; 132-liquid inlet hole; 133-liquid outlet hole; 134-spiral protrusion; 14-third end cover; 141-second oil outlet hole; 20-stator assembly; 21-third cavity; 30-rotor; 31-rotor lamination; 32-second end cover; 321-third opening; 33-rotor shaft; 331-second oil inlet hole; 332-second opening; 333-fourth cavity; 334-fourth opening; 40-motor bearing; 02-liquid storage device; 03-oil storage device. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0042] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0043] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0044] In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0045] In the description of the utility model, need explaining further still, unless another explicit provision and limitation, term " set ", " install ", " link ", " connect " should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through intermediate medium, can be two element internal communication. For ordinary skilled in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.

[0046] The motor cooling technology of electric vehicle mainly includes air cooling, water cooling, oil cooling and the like, and the oil cooling can fully spray stator and rotor, with high cooling efficiency, and currently occupies the mainstream position. However, the cooling effect of the current oil cooling mode still has room for improvement. In addition, the oil cooling mode needs to be installed with an oil injection ring, and the cooling and lubrication of the motor bearing also needs to be passed through a machining oil channel hole to pass lubricating oil into the bearing through the machining oil channel, which is relatively complex to implement.

[0047] Based on the above situation, the motor 01, the motor cooling system and the automobile provided by the embodiments of the present specification can effectively alleviate the above technical problems.

[0048] Please refer to Figure 1 The motor 01 provided by the embodiment includes a motor shell 10 and a stator assembly 20.

[0049] The stator assembly 20 is installed in the first cavity 121 inside the motor inner shell 12.

[0050] The first end cover 11 is perpendicular to the motor inner shell 12, and the first end cover 11 is provided with a first oil inlet hole 111 and a first oil outlet hole 112, and the motor inner shell 12 is provided with a first opening 122.

[0051] The first oil inlet hole 111, the first cavity 121, the first opening 122 and the first oil outlet hole 112 are sequentially communicated to form a first cooling oil channel, so as to cool the stator assembly 20 by the cooling oil.

[0052] The first oil inlet hole 111, the first cavity 121, the first opening hole 122 and the first oil outlet hole 112 are sequentially communicated to form a first cooling oil channel. When the motor 01 is started to be cooled, cooling oil can be introduced from the first oil inlet hole 111 on the first end cover 11, and the cooling oil flows into the first cavity 121. When the oil level in the first cavity 121 rises, the cooling oil begins to flow from the first opening hole 122 to the inside of the stator assembly 20 when the height of the cooling oil reaches the first opening hole 122. When the cooling oil is filled in the stator assembly 20, the winding and the core of the stator assembly 20 are sufficiently cooled, and finally flow out from the first oil outlet hole 112.

[0053] Optionally, the motor shell 10 further comprises a motor shell 13, and the first end cover 11, the motor shell 13 and the motor inner shell 12 are integrally formed. The first end cover 11 is perpendicular to the motor inner shell 12 and the motor shell 13.

[0054] The motor shell 13 is sleeved on the motor inner shell 12 to form a second cavity 131 between the motor inner shell 12 and the motor shell 13.

[0055] The motor shell 13 is sleeved on the motor inner shell 12 to form a second cavity 131 between the motor inner shell 12 and the motor shell 13.

[0056] As shown in Figure 2 , the motor shell 13 can also be arranged on the periphery of the motor inner shell 12, so that the first end cover 11, the motor shell 13 and the motor inner shell 12 are integrally formed. In order to improve the cooling effect of the motor 01, an inlet hole 132 and an outlet hole 133 can be arranged at opposite positions of the motor shell 13.

[0057] The inlet hole 132, the second cavity 131 and the outlet hole 133 are sequentially communicated to form a cooling liquid channel. When cooling is started, cooling liquid is introduced from the inlet hole 132, so that the cooling liquid enters the second cavity 131 between the motor inner shell 12 and the motor shell 13. After the cooling liquid passes through the second cavity 131 and fully contacts the motor inner shell 12, the heat on the surface of the motor inner shell 12 is taken away, and the cooling liquid flows out from the outlet hole 133 of the motor shell 13.

[0058] Optionally, a spiral protrusion 134 is arranged on the inner wall of the motor shell 13.

[0059] The spiral protrusion 134 closely abuts the motor inner shell 12 to form the second cavity 131 with the motor inner shell 12 and the motor shell 13.

[0060] In order to prevent the problem that the cooling liquid enters the second cavity 131 and directly flows out from the outlet hole 133, resulting in poor liquid cooling effect. As Figure 3As shown, a spiral protrusion 134 can be provided on the inner wall of the motor housing 13. The spiral protrusion 134 rotates along the liquid inlet 132 of the motor housing 13 until it reaches the liquid outlet 133 of the motor housing 13. When the coolant enters the second cavity 131, it will flow spirally downwards along the inner wall of the motor housing 13 with the spiral protrusion 134 until it reaches the liquid outlet 133 and flows out from the second cavity 131, achieving a sufficient cooling effect.

[0061] Optionally, the motor 01 also includes a rotor 30, which is disposed in a third cavity 21 inside the stator assembly 20. The rotor 30 includes rotor laminations 31, a second end cover 32, and a rotating shaft 33.

[0062] The rotating shaft 33 passes through the rotor laminations 31 and the second end cover 32, and is perpendicular to the rotor laminations 31 and the second end cover 32.

[0063] The rotating shaft 33 has a second oil inlet 331 and a second opening 332. The second end cover 32 has a third opening 321.

[0064] The second oil inlet 331, the second opening 332, the third opening 321 and the first oil outlet 112 are connected in sequence to form the second cooling oil channel.

[0065] like Figure 4 As shown, the rotor 30 is disposed inside the stator core of the stator assembly 20, and includes rotor laminations 31, a second end cover 32, and a rotating shaft 33. The rotating shaft 33 passes through the rotor laminations 31 and the second end cover 32, and is perpendicular to the rotor laminations 31 and the second end cover 32. This allows the rotor laminations 31 to rotate along the axis of the rotating shaft 33 when the motor 01 is started.

[0066] The second oil inlet 331, the second opening 332, the third opening 321, and the first oil outlet 112 are connected in sequence to form a second cooling oil channel. When cooling begins, cooling oil is introduced through the second oil inlet 331. When the oil level in the rotating shaft 33 reaches the second opening 332, the cooling oil flows through the second opening 332 to the rotor laminations 31, i.e., the third cavity 21.

[0067] In one alternative implementation, such as Figure 5 As shown, multiple second openings 332 can be provided on the rotating shaft 33 so that the cooling oil can be sprayed more evenly onto the rotor laminations 31 when the rotating shaft 33 rotates.

[0068] When the cooling oil fills the third cavity 21, it sprays out from the third opening 321 on the second end cover 32, flows to the stator assembly 20, merges with the cooling oil in the first cooling oil channel, and finally flows out from the first oil outlet 112.

[0069] Optionally, the rotating shaft 33 has a hollow structure, and the second oil inlet 331 is located at one end of the rotating shaft 33.

[0070] The third opening 321 is formed on the shaft of the rotating shaft 33, connecting the rotor laminations 31 with the fourth cavity 333 inside the rotating shaft 33.

[0071] Still with Figure 4 For example, the second oil inlet 331 is set at one end of the rotating shaft 33. After the cooling oil enters from the second oil inlet 331, it fills the fourth cavity 333 inside the rotating shaft 33. When the oil level reaches the third opening 321 on the shaft of the rotating shaft 33, it flows to the rotor lamination 31 through the third opening 321.

[0072] Optionally, the motor 01 also includes a motor bearing 40, and a fourth opening 334 is provided on the rotating shaft 33. The motor bearing 40 is connected to the fourth opening 334.

[0073] Please see Figure 4 A fourth opening 334 is provided on the rotating shaft 33. When cooling oil enters the fourth cavity 333 and reaches the fourth opening 334, it cools and lubricates the motor bearing 40 through the fourth opening 334. Afterward, the cooling oil merges with the cooling oil that enters the first cavity 121 from the first opening 122 in the first cooling oil channel, and finally flows out from the first oil outlet 112. Similar to the second opening 332, multiple fourth openings 334 can also be provided on the rotating shaft 33.

[0074] Optionally, the motor bearing 40 is mounted on the other end of the rotating shaft 33 opposite to the second oil inlet 331.

[0075] The fourth opening 334 is opened on the shaft of the rotating shaft 33, located between the motor bearing 40 and the third opening 321. The fourth opening 334 connects the bearing and the fourth cavity 333.

[0076] The motor bearing 40 can be mounted on the shaft 33 at the end opposite to the second oil inlet 331, and sleeved on the shaft 33. A fourth opening 334 is opened on the shaft 33 near the end of the motor bearing 40. When cooling oil flows into the fourth cavity 333 from the second oil inlet 331, when the oil level reaches the fourth opening 334, it will flow from the fourth opening 334 to the motor bearing 40.

[0077] Optionally, the motor housing 10 also includes a third end cover 14, and the first end cover 11, the third end cover 14 and the motor inner housing 12 are integrally formed.

[0078] The third end cap 14 is disposed relative to the first end cap 11, and a second oil outlet 141 is provided on the third end cap 14.

[0079] The first oil inlet hole 111, the first cavity 121, the first opening 122 and the second oil outlet hole 141 are sequentially communicated to form a third cooling oil passage.

[0080] As shown in the drawings, Figure 1 The third end cover 14 corresponds to the first end cover 11 and is located at one end of the motor bearing 40 installed on the rotating shaft 33. The second oil outlet hole 141 is formed in the third end cover 14, so that the cooling oil that does not flow out of the first oil outlet hole 112 can flow out of the second oil outlet hole 141, avoiding the residual of the cooling oil in the motor 01.

[0081] Based on the same inventive concept, the utility model provides a kind of motor cooling system, and motor cooling system includes liquid storage device 02, oil storage device 03 and above-mentioned motor 01.

[0082] Please refer to Figure 6 Liquid storage device 02 is communicated with the liquid inlet hole 132 and the liquid outlet hole 133 of motor 01 respectively, and oil storage device 03 is connected with the first oil inlet hole 111, the second oil inlet hole 331, the first oil outlet hole 112 and the second oil outlet hole 141 of motor 01 respectively, to realize the circulation of cooling oil and cooling liquid.

[0083] Based on the same inventive concept, the utility model provides a kind of automobile, and the automobile includes above-mentioned motor cooling system.

[0084] Regarding the above-mentioned automobile, the specific functions and structures of each part have been described in detail in the embodiments of motor 01 and motor cooling system provided in the specification, and will not be described in detail here.

[0085] Using the above-mentioned scheme in the embodiments of the utility model, the following advantages can be achieved:

[0086] 1. By setting the first oil inlet hole, the first oil outlet hole on the first end cover of the motor, and setting the first opening on the inner shell of the motor, the first oil inlet hole, the first cavity inside the inner shell of the motor, the first opening and the first oil outlet hole are sequentially communicated to form a first cooling oil passage. When the motor is cooled, the cooling of the stator assembly can be completed by directly introducing cooling oil from the first oil inlet hole, the cooling effect is good, and it is not necessary to separately install an oil injection ring.

[0087] 2. By setting the liquid inlet hole and the liquid outlet hole on the motor shell, the motor can be water-cooled synchronously on the basis of oil-cooling, further improving the cooling effect of the motor.

[0088] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. An electric machine characterized in that, The motor (01) comprises a motor shell (10) and a stator assembly (20); the motor shell (10) comprises a first end cover (11) and a motor inner shell (12); the first end cover (11) and the motor inner shell (12) are integrally formed; The stator assembly (20) is installed in a first cavity (121) inside the motor inner shell (12); The first end cover (11) is arranged perpendicularly to the motor inner shell (12), and a first oil inlet hole (111) and a first oil outlet hole (112) are formed in the first end cover (11); a first opening (122) is formed in the motor inner shell (12); The first oil inlet hole (111), the first cavity (121), the first opening (122) and the first oil outlet hole (112) are sequentially communicated to form a first cooling oil channel, so that the stator assembly (20) is cooled by cooling oil.

2. The electric machine of claim 1, wherein, The motor shell (10) further comprises a motor outer shell (13), and the first end cover (11), the motor outer shell (13) and the motor inner shell (12) are integrally formed; the first end cover (11) is arranged perpendicularly to the motor inner shell (12) and the motor outer shell (13); The motor outer shell (13) is sleeved outside the motor inner shell (12) to form a second cavity (131) between the motor inner shell (12) and the motor outer shell (13); An inlet hole (132) and an outlet hole (133) are formed in the motor outer shell (13), and the inlet hole (132), the second cavity (131) and the outlet hole (133) are sequentially communicated to form a cooling liquid channel.

3. The electric machine of claim 2, wherein, A spiral protrusion (134) is arranged on the inner wall of the motor outer shell (13); The spiral protrusion (134) is in close contact with the motor inner shell (12) and forms the second cavity (131) with the motor inner shell (12) and the motor outer shell (13).

4. The electric machine of claim 1, wherein, The motor (01) further comprises a rotor (30), which is arranged in a third cavity (21) inside the stator assembly (20); the rotor (30) comprises a rotor lamination (31), a second end cover (32) and a rotating shaft (33); The rotating shaft (33) penetrates the rotor lamination (31) and the second end cover (32) and is perpendicular to the rotor lamination (31) and the second end cover (32); A second oil inlet hole (331) and a second opening (332) are formed in the rotating shaft (33); A third opening (321) is formed in the second end cover (32); The second oil inlet hole (331), the second opening (332), the third opening (321) and the first oil outlet hole (112) are sequentially communicated to form a second cooling oil channel.

5. The electric machine of claim 4, wherein, The rotating shaft (33) is a hollow structure, and the second oil inlet hole (331) is located at one end of the rotating shaft (33); The third opening (321) is formed in the shaft body of the rotating shaft (33) and communicates a fourth cavity (333) in the rotor lamination (31) and the rotating shaft (33).

6. The electric machine of claim 5, wherein, The motor (01) further comprises a motor bearing (40), and a fourth opening (334) is further formed in the rotating shaft (33); The motor bearing (40) is communicated with the fourth opening (334).

7. The electric machine of claim 6, wherein, The motor bearing (40) is sleeved on the rotating shaft (33) at the other end opposite to the second oil inlet hole (331); The fourth opening (334) is formed in the shaft body of the rotating shaft (33) and located between the motor bearing (40) and the third opening (321), and the fourth opening (334) is communicated with the bearing and the fourth cavity (333).

8. The electric machine of claim 1, wherein, The motor housing (10) further comprises a third end cover (14), and the first end cover (11), the third end cover (14) and the motor inner shell (12) are integrally formed; The third end cover (14) is arranged relative to the first end cover (11), and a second oil outlet hole (141) is formed in the third end cover (14); The first oil inlet hole (111), the first cavity (121), the first opening (122) and the second oil outlet hole (141) are sequentially communicated to form a third cooling oil channel.

9. An electric machine cooling system characterized by, The motor cooling system comprises a liquid storage device (02), an oil storage device (03) and the motor (01) according to any one of claims 1-8.

10. An automobile characterized by comprising: The automobile comprises the motor cooling system according to claim 9.

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