Cooling oil ring and oil-cooled motor

Abstract

The utility model relates to motor cooling technical field discloses a cooling oil ring and oil -cooled motor. Cooling oil ring includes the circular ring framework, and the circumferential outer surface of circular ring framework is provided with cooling oil groove, and cooling oil groove is located the upper half of circular ring framework, and the outer ring of cooling oil groove is provided with the oil baffle, and the oil baffle is provided with sealing ring, and the groove bottom of cooling oil groove is provided with a plurality of spray holes, and spray hole is through to the circumferential inner surface of circular ring framework, and the bottom of circular ring framework is provided with the oil return, and the oil return is through the circumferential inner surface and circumferential outer surface of circular ring framework. The above -mentioned cooling oil ring simple structure, low cost, through the design of cooling oil groove and spray hole, make the cooling oil can form the spray to the inside of cooling oil ring, the oil -cooled motor of adopting this cooling oil ring can carry out effective cooling to the inside stator winding and rotor, and the cooling efficiency is higher, and the cooling effect is obvious, and the cooling oil amount that needs is also lower, can satisfy the cooling requirement of higher power car -used motor.

Description

Technical Field

[0001] This utility model relates to the field of motor cooling technology, and in particular to a cooling oil ring and an oil-cooled motor. Background Technology

[0002] Currently, automotive motors are divided into two types: water-cooled motors and oil-cooled motors. Water-cooled motors rely on cooling water channels inside the motor housing for heat dissipation. Water circulates within the housing to cool the motor. However, this method cannot directly cool the stator windings and rotor, and water-cooled motors are complex and expensive. Oil-cooled motors rely on the rotor agitating lubricating oil within the motor cavity for cooling. This method has a slower cooling speed, and to reduce oil agitation losses, the oil level in the motor cavity is kept low. This results in insufficient cooling under high power and high speed conditions, thus limiting the motor's thermal load and consequently its power. Utility Model Content

[0003] Based on the above, the purpose of this utility model is to provide a cooling oil ring and an oil-cooled motor, through which the cooling oil ring realizes the function of spray cooling of the stator and rotor, thereby improving the cooling efficiency of the oil-cooled motor.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A cooling oil ring includes a circular ring skeleton. A cooling oil groove is provided on the outer circumference of the circular ring skeleton. The cooling oil groove is located in the upper half of the circular ring skeleton. An oil baffle groove is provided on the outer ring of the cooling oil groove. A sealing ring is provided in the oil baffle groove. A plurality of spray holes are opened at the bottom of the cooling oil groove and extend to the inner circumference of the circular ring skeleton. An oil return port is provided at the bottom of the circular ring skeleton and extends through the inner circumference and outer circumference of the circular ring skeleton.

[0006] As an alternative, an annular groove communicating with an oil baffle is provided on the outer circumference of the circular skeleton, and a sealing strip is provided in the annular groove, with the oil return port located on one side of the annular groove.

[0007] As an alternative, the sealing strip and the sealing ring are vulcanized together.

[0008] As an alternative, the spray holes are evenly spaced.

[0009] As an optional option, the ring frame is made of PPS plastic.

[0010] As an optional solution, the sealing ring is made of AEM rubber.

[0011] As an alternative, the circular frame is provided with positioning bosses for assembly.

[0012] On the other hand, the present invention adopts the following technical solution:

[0013] An oil-cooled motor includes a motor housing, a stator winding, and a rotor. The stator winding is mounted on the motor housing, and the rotor rotates inside the stator winding. A cooling oil ring is provided on the inner wall of the motor housing at the mounting position corresponding to the stator winding. The motor housing is provided with an oil inlet communicating with a cooling oil tank and an oil outlet communicating with a return oil outlet. Cooling oil that has passed through the cooling oil ring and sprayed onto the stator winding and rotor is introduced into the oil inlet.

[0014] As an optional solution, an external circulation pipeline is installed between the oil outlet and the oil inlet to realize the recycling of cooling oil.

[0015] The beneficial effects of this utility model are:

[0016] This cooling oil ring has a simple structure and low cost. Through the design of the cooling oil groove and spray holes, the cooling oil can be sprayed into the interior of the cooling oil ring. The oil-cooled motor using this cooling oil ring can effectively cool the internal stator winding and rotor. Compared with the traditional method of cooling by stirring oil, this spray cooling method has higher cooling efficiency, obvious cooling effect, and requires less cooling oil, which can meet the cooling requirements of higher power automotive motors. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the cooling oil ring provided in an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the installation of a cooling oil ring in an oil-cooled motor according to an embodiment of this utility model.

[0019] In the attached image:

[0020] 1. Circular frame; 2. Cooling oil tank; 3. Oil baffle; 4. Sealing ring; 5. Spray hole; 6. Oil return port; 7. Sealing strip; 8. Positioning boss; 9. Motor housing; 10. Stator winding; 11. Rotor; 12. Oil inlet. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0022] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the terms "first" and "second" are merely used to distinguish between different terms in description and do not have any special meaning.

[0026] Please see Figure 1 As shown, this embodiment provides a cooling oil ring, including a circular frame 1. A cooling oil groove 2 is provided on the outer circumference of the circular frame 1. The cooling oil groove 2 is located in the upper half of the circular frame 1. An oil baffle groove 3 is provided on the outer ring of the cooling oil groove 2. A sealing ring 4 is provided in the oil baffle groove 3. A plurality of spray holes 5 are opened at the bottom of the cooling oil groove 2. The spray holes 5 penetrate to the inner circumference of the circular frame 1. An oil return port 6 is provided at the bottom of the circular frame 1. The oil return port 6 penetrates the inner circumference and outer circumference of the circular frame 1.

[0027] Therefore, the cooling oil ring has a simple structure and low cost. Through the design of the cooling oil groove 2 and the spray hole 5, the cooling oil can be sprayed into the interior of the cooling oil ring, which changes the original cooling method of stirring the cooling oil by the rotor 11. The cooling efficiency is higher and the amount of cooling oil required is also lower.

[0028] Optionally, an annular groove communicating with the oil baffle groove 3 is provided on the outer circumference of the circular skeleton 1, and a sealing strip 7 is provided in the annular groove, with the oil return port 6 located on one side of the annular groove.

[0029] Therefore, the sealing strip 7 in the annular groove improves the installation sealing of the circular frame 1, further prevents the leakage of cooling oil in the cooling oil tank 2, improves the oil return efficiency, and reduces the retention of cooling oil.

[0030] Furthermore, the sealing strip 7 and the sealing ring 4 are vulcanized together, eliminating the joint gap between the sealing strip 7 and the sealing ring 4, and further reducing the risk of cooling oil leakage.

[0031] Optionally, each spray hole 5 is evenly spaced.

[0032] This ensures that the cooling oil can be sprayed evenly onto the surface of the stator winding 10, improving the cooling effect and avoiding localized cooling dead zones or overheated areas. Furthermore, the uniform orifice distribution helps the cooling oil flow and distribute more stably, which also has a positive effect on reducing flow resistance and promoting oil return.

[0033] Optionally, the circular frame 1 is made of PPS plastic.

[0034] PPS plastic material (polyphenylene sulfide) has excellent heat resistance, dimensional stability, and resistance to oil and chemical corrosion. It can cope with the internal working environment of the motor, ensure the normal spray cooling function of the ring frame 1, and help to achieve overall lightweighting. In addition, glass fiber material can be added to PPS plastic to further enhance its performance.

[0035] Optionally, the sealing ring 4 is made of AEM rubber.

[0036] AEM rubber is a milky white, semi-transparent solid rubber material with excellent heat aging resistance and liquid resistance, which can meet the sealing requirements here.

[0037] Optionally, the circular frame 1 is provided with a positioning boss 8 for assembly.

[0038] The positioning boss 8 provides a clear benchmark and guide for the installation of the cooling oil ring, ensuring that it can be installed quickly and accurately in the predetermined position, reducing adjustment time and improving assembly efficiency and quality. In addition, the positioning boss 8 can effectively prevent the cooling oil ring from circumferential or radial misalignment during operation, enhancing its structural stability and reliability during operation.

[0039] Based on this, refer to Figure 2As shown, this embodiment also provides an oil-cooled motor, including a motor housing 9, a stator winding 10 and a rotor 11. The stator winding 10 is mounted on the motor housing 9, and the rotor 11 rotates inside the stator winding 10. The aforementioned cooling oil ring is provided on the inner wall of the motor housing 9 at the mounting position corresponding to the stator winding 10. The motor housing 9 is provided with an oil inlet 12 communicating with the cooling oil tank 2 and an oil outlet communicating with the oil return port 6. Cooling oil that has passed through the cooling oil ring and sprayed to cool the stator winding 10 and the rotor 11 is introduced into the oil inlet 12.

[0040] Therefore, the oil-cooled motor using this cooling oil ring can effectively cool the internal stator winding 10 and rotor 11. Compared with the traditional method of cooling by stirring oil, this spray cooling method has higher cooling efficiency and obvious cooling effect, and can meet the cooling requirements of higher power automotive motors.

[0041] Optionally, an external circulation pipeline is provided between the oil outlet and the oil inlet 12 to realize the recycling of cooling oil.

[0042] The cooling oil entering through the oil inlet 12 first enters the cooling oil groove 2 of the cooling oil ring. Under the sealing effect of the sealing ring 4 and the pressure of the cooling oil, it is sprayed out from each spray hole 5 to cool the upper half of the stator winding 10. Then, under the action of gravity, it drips onto the rotor 11 and the lower half of the stator winding 10, achieving the same cooling effect. The cooling oil flowing to the bottom of the cooling oil ring flows out through the oil return port 6 and the oil outlet. After being purified and cooled through the external circulation pipeline, it is reintroduced into the oil inlet 12 to achieve the circulation of the cooling oil, which is more economical.

[0043] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A cooling oil ring, characterized in that, The device includes a circular frame (1), on which a cooling oil groove (2) is provided on the outer circumference of the circular frame (1). The cooling oil groove (2) is located in the upper half of the circular frame (1). An oil baffle groove (3) is provided on the outer ring of the cooling oil groove (2). A sealing ring (4) is provided in the oil baffle groove (3). Several spray holes (5) are provided at the bottom of the cooling oil groove (2). The spray holes (5) extend to the inner circumference of the circular frame (1). An oil return port (6) is provided at the bottom of the circular frame (1). The oil return port (6) extends through the inner circumference and the outer circumference of the circular frame (1).

2. The cooling oil ring according to claim 1, characterized in that, The outer circumference of the circular skeleton (1) is provided with an annular groove that communicates with the oil baffle groove (3). A sealing strip (7) is provided in the annular groove, and the oil return port (6) is located on one side of the annular groove.

3. The cooling oil ring according to claim 2, characterized in that, The sealing strip (7) and the sealing ring (4) are vulcanized together.

4. The cooling oil ring according to claim 1, characterized in that, Each of the spray holes (5) is evenly spaced.

5. The cooling oil ring according to claim 1, characterized in that, The circular frame (1) is made of PPS plastic.

6. The cooling oil ring according to claim 1, characterized in that, The sealing ring (4) is made of AEM rubber.

7. The cooling oil ring according to claim 1, characterized in that, The circular frame (1) is provided with a positioning boss (8) for assembly.

8. An oil-cooled motor, comprising a motor housing (9), a stator winding (10), and a rotor (11), wherein the stator winding (10) is mounted on the motor housing (9), and the rotor (11) rotates within the stator winding (10), characterized in that, A cooling oil ring as described in any one of claims 1-7 is provided on the inner wall of the motor housing (9) and at the installation position corresponding to the stator winding (10). The motor housing (9) is provided with an oil inlet (12) communicating with the cooling oil groove (2) and an oil outlet communicating with the oil return port (6). Cooling oil that has passed through the cooling oil ring and sprayed to cool the stator winding (10) and the rotor (11) is introduced into the oil inlet (12).

9. The oil-cooled motor according to claim 8, characterized in that, An external circulation pipeline is provided between the oil outlet and the oil inlet (12) to realize the recycling of the cooling oil.

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