Compact oil-water mixed cooling motor base

Abstract

The utility model discloses a compact oil water mixed cooling motor base relates to motor base technical field, contains base body, motor stator and oil bottom box, is equipped with the cooling water channel for depositing cooling water on the base body, and the motor stator is connected and is fixed on the inner wall of base body, and the both ends of motor stator all have winding wire package, and the oil bottom box is integrally processed and is shaped in the bottom of base body, and is linked together with base body, and the oil bottom box is used for temporarily storing the hot oil of winding wire package cooling, the oil pump and oil cooler are integrated on the oil bottom box through this scheme, replace the structure of traditional external oil pump and pipeline, greatly reduce the volume of whole motor, can satisfy the demand of compact layout to new energy automobile, and the installation adaptation scene is wider, reduces pipeline consumable simultaneously, saves material cost, and no complex pipeline joint, only needs to dismount oil pump and oil cooler when the later period maintenance can replace parts, and maintenance difficulty reduces.

Description

Technical Field

[0001] This utility model relates to a compact oil-water hybrid cooling motor base, belonging to the technical field of motor bases. Background Technology

[0002] The frame serves as the main structure of the motor. The frame is equipped with a cooling channel. The frame is in contact with the stator core, and the heat from the stator core can be transferred to the frame body. The frame body then transfers the heat to the cooling medium in the cooling channel. The cooling medium flows in the cooling channel and carries the heat out of the motor.

[0003] Because the ends of the winding coils are far from the iron core, most of the heat from the coil ends can only be transferred to the stator iron core. As a result, oil-cooled motors were later developed. Please refer to the utility model patent application filed by the applicant recently with the publication number CN220874322U. This solution mainly involves internally spraying oil to the coils at the ends of the windings, where the coils exchange heat with the oil. The stator iron core is equipped with complex oil grooves for oil cooling. The oil that has absorbed heat eventually flows to the bottom of the motor cavity and is then transported to the oil collection chamber at the top of the frame through external pipelines and an oil pump to complete the cooling cycle.

[0004] The above-mentioned circulating system requires additional components such as pipelines, oil pumps, and oil collection chambers, resulting in a significant increase in the overall size of the base. This leads to a decrease in installation adaptability and makes it difficult to meet the compact layout requirements of new energy vehicles. Secondly, the increased weight increases the difficulty of handling and assembly. Thirdly, the increased cost requires more raw materials, and processing and subsequent maintenance are more troublesome. Therefore, a new solution is needed to address these issues. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a compact oil-water hybrid cooling motor base.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a compact oil-water hybrid cooling motor base, comprising a base body, a motor stator, and an oil pan. The base body has cooling water channels for storing cooling water. The motor stator is connected and fixed to the inner wall of the base body. Both ends of the motor stator have winding coils. The oil pan is integrally formed at the bottom of the base body and is connected to the base body. The oil pan is used to temporarily store hot oil for cooling the winding coils.

[0007] An oil pump and an oil cooler are installed on the outer wall of the oil pan. The oil pump is connected to both the oil pan and the oil cooler. The oil pump is used to extract the hot oil in the oil pan and transport it to the oil cooler. The oil cooler is connected to the cooling water channel on the base body. The hot oil in the oil cooler exchanges heat with the cooling water in the cooling water channel to cool the hot oil in the oil cooler.

[0008] The base body is provided with a mounting base, on which an oil filter is fixedly mounted. The inlet of the oil filter is connected to an oil cooler to filter the oil from the oil cooler. The base body is also provided with a first oil supply pipeline and a second oil supply pipeline that are interconnected. An oil supply branch pipe is connected to the second oil supply pipeline. The outlet of the oil filter is connected to the first oil supply pipeline. The oil filtered by the oil filter flows to the end cover of the motor through the second oil supply pipeline and to the winding coil through the oil supply branch pipe.

[0009] Preferably, the oil pump has an oil inlet located inside the oil pan to draw hot oil from the oil pan. The outer wall of the oil pan has a first oil delivery pipe and a first oil outlet pipe. The first oil delivery pipe connects the oil pump to the oil cooler to deliver oil to the oil cooler. The first oil outlet pipe is connected to the bottom of the oil cooler to discharge the cooled oil.

[0010] Preferably, the mounting base has a second oil supply line and a second oil outlet line. The two ends of the second oil supply line are respectively connected to the first oil outlet line and the inlet of the oil filter to input the cooling oil in the oil cooler into the oil filter. The two ends of the second oil outlet line are respectively connected to the first oil supply line and the outlet of the oil filter to discharge the oil filtered by the oil filter.

[0011] Preferably, the oil pan is provided with an inlet pipe and an outlet pipe. One end of the inlet pipe and the outlet pipe are connected to the cooling water channel, and the other end of the inlet pipe and the outlet pipe are connected to the oil cooler. The inlet pipe is used to input the cooling water in the cooling water channel into the oil cooler, and the outlet pipe is used to output the cooling water in the oil cooler back into the cooling water channel.

[0012] Preferably, the outer wall of the base body is provided with a water inlet and a water outlet, both of which are connected to the cooling water channel.

[0013] Preferably, the bottom of the base body is provided with an oil return port, and the base body is connected to the oil pan through the oil return port.

[0014] Preferably, multiple heat dissipation fins are integrally formed on the outer wall of the base body located inside the oil pan, and the multiple heat dissipation fins are distributed in an array.

[0015] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0016] 1. This utility model integrates the oil pump and oil cooler on the oil pan, replacing the traditional external oil pump and pipeline structure, which greatly reduces the size of the entire motor, meets the compact layout requirements of new energy vehicles, has a wider range of installation and compatibility scenarios, reduces pipeline consumables, saves material costs, and has no complicated pipeline joints. In the later maintenance, only the oil pump and oil cooler need to be disassembled to replace the parts, reducing the maintenance difficulty.

[0017] 2. The oil filter is directly connected to the oil cooler, the first oil supply line and the second oil supply line. The oil filtration path is shortened, which can effectively filter impurities in the oil caused by winding aging, avoid blockage of each oil supply line, extend the service life of the motor and reduce the frequency of maintenance. At the same time, the design of the second oil outlet line realizes multiple uses of one oil, eliminating the need to set up a separate oil line for the motor rotor, further simplifying the structure. Attached Figure Description

[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0019] Appendix Figure 1 This is a schematic diagram of the structure of a compact oil-water hybrid cooling motor base according to the present invention;

[0020] Appendix Figure 2 This is a half-sectional view of a compact oil-water hybrid cooling motor base according to the present invention;

[0021] Appendix Figure 3 This is a schematic diagram of the structure of a compact oil-water mixed cooling motor base for removing the oil cooler and oil filter according to the present invention;

[0022] Appendix Figure 4 This is a cross-sectional view of a compact oil-water hybrid cooling motor base according to the present invention. Figure 1 ;

[0023] Appendix Figure 5 For the appendix Figure 4 Enlarged view of point A in the middle;

[0024] Appendix Figure 6 This is a cross-sectional view of a compact oil-water hybrid cooling motor base according to the present invention. Figure 2 ;

[0025] Appendix Figure 7 This is a cross-sectional view of a compact oil-water hybrid cooling motor base according to the present invention. Figure 3 .

[0026] Appendix Figure 8 This is a cross-sectional view of a compact oil-water hybrid cooling motor base according to the present invention. Figure 4 .

[0027] In the diagram: 1. Base body; 11. Cooling water channel; 12. Mounting base; 122. Second oil supply line; 123. Second oil outlet line; 13. First oil supply line; 14. Second oil supply line; 141. Oil supply branch line; 15. Water inlet; 16. Water outlet; 17. Oil return port; 18. Cooling fins; 2. Motor stator; 21. Winding coil; 3. Oil pan; 31. First oil supply line; 32. First oil outlet line; 33. Water inlet line; 34. Water outlet line; 4. Oil pump; 41. Oil suction port; 5. Oil cooler; 6. Oil filter. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0029] As attached Figure 1-5 As shown, the present invention discloses a compact oil-water hybrid cooling motor base, which aims to solve the problems of large size, heavy weight and high cost of traditional oil-cooled motor bases through integrated and unified design. It includes a base body 1, a motor stator 2 and an oil pan 3.

[0030] The base body 1 has a cooling water channel 11 for storing cooling water. The outer wall of the base body 1 has a water inlet 15 and a water outlet 16, both of which are connected to the cooling water channel 11. The water inlet 15 is used to supply cooling water into the cooling water channel 11, and the water outlet 16 is used to discharge the water in the cooling water channel 11 to form a circulating water path for continuous cooling of the motor. The motor stator 2 is connected and fixed to the inner wall of the base body 1. The cooling water in the cooling water channel 11 is used to cool the heat generated by the motor stator 2 during operation. Both ends of the motor stator 2 have winding coils 21.

[0031] The oil pan 3 is integrally formed at the bottom of the base body 1 and is connected to the base body 1. The oil pan 3 is used to temporarily store the hot oil used to cool the winding coil 21. The integrally formed structure not only eliminates the gaps between the parts and completely avoids the risk of oil leakage, but also saves the additional assembly process and greatly reduces the overall space occupied by the base. In this embodiment, the bottom of the base body 1 is provided with an oil return port 17. The base body 1 is connected to the oil pan 3 through the oil return port 17 to ensure that the cooling oil in the base body 1 can flow into the oil pan 3.

[0032] An oil pump 4 and an oil cooler 5 are installed on the outer wall of the oil pan 3. The oil pump 4 is connected to both the oil pan 3 and the oil cooler 5. The oil pump 4 is used to extract hot oil from the oil pan 3 and transport it to the oil cooler 5. Specifically, the oil pump 4 has an oil inlet 41 located inside the oil pan 3 to extract hot oil from the oil pan 3. The outer wall of the oil pan 3 has a first oil supply pipe 31 and a first oil outlet pipe 32. The first oil supply pipe 31 is used to connect the oil pump 4 and the oil cooler 5 to supply oil into the oil cooler 5. The first oil outlet pipe 32 is connected to the bottom of the oil cooler 5 to discharge the cooled oil.

[0033] As attached Figure 6-8 As shown, the oil cooler 5 is connected to the cooling water channel 11 on the base body 1. The hot oil in the oil cooler 5 exchanges heat with the cooling water in the cooling water channel 11 to cool the hot oil in the oil cooler 5. Specifically, the oil pan 3 is provided with an inlet pipe 33 and an outlet pipe 34. One end of the inlet pipe 33 and the outlet pipe 34 are connected to the cooling water channel 11, and the other end of the inlet pipe 33 and the outlet pipe 34 are connected to the oil cooler 5. The inlet pipe 33 is used to input the cooling water in the cooling water channel 11 into the oil cooler 5, and the outlet pipe 34 is used to output the cooling water in the oil cooler 5 back to the cooling water channel 11.

[0034] Please refer to the attached document. Figure 6-7 It should be noted that the oil cooler 5 is a prior art in this field. Its internal structure is a partition structure, in which cooling water and hot oil alternately enter each partition and are not interconnected. The heat of the hot oil is transferred to the cooling water through heat conduction, and the cooling water carries away the absorbed heat to complete the cooling.

[0035] During operation, the hot oil in the oil pan 3 is drawn into the oil cooler 5 by the oil pump 4, and the cooling water in the cooling water channel 11 enters the oil cooler 5 through the water inlet pipe 33. After absorbing heat, the cooling water flows into the cooling water channel 11 through the water outlet pipe 34 and is finally discharged through the water outlet 16, thus completing the cooling of the hot oil.

[0036] By integrating the oil pump 4 and oil cooler 5 onto the oil pan 3, the traditional external oil pump 4 and pipeline structure is replaced, which greatly reduces the overall size of the motor, reduces pipeline consumables, saves material costs, and eliminates complex pipeline joints. During later maintenance, only the oil pump 4 and oil cooler 5 need to be disassembled to replace the parts, thus reducing the difficulty of maintenance.

[0037] The base body 1 is provided with a mounting base 12, and an oil filter 6 is fixedly installed on the mounting base 12. The inlet of the oil filter 6 is connected to the oil cooler 5 to filter the oil from the oil cooler 5, thereby filtering out impurities in the oil and preventing blockage of the oil passages. The base body is also provided with a first oil supply pipeline 13 and a second oil supply pipeline 14 that are interconnected. An oil supply branch pipe 141 is connected to the second oil supply pipeline, and the outlet of the oil filter 6 is connected to the first oil supply pipeline 13.

[0038] Specifically, the mounting base 12 has a second oil supply line 122 and a second oil outlet line 123. The two ends of the second oil supply line 122 are respectively connected to the first oil outlet line 32 and the inlet of the oil filter 6 to input the cooling oil in the oil cooler 5 into the oil filter 6. The two ends of the second oil outlet line 123 are respectively connected to the first oil supply line 13 and the outlet of the oil filter 6 to discharge the oil filtered by the oil filter 6. The oil filtered by the oil filter 6 flows to the end cover of the motor through the second oil supply line 14 and flows to the winding coil 21 through the oil supply branch pipe 141.

[0039] It should be noted that after the oil filtered by the oil filter 6 flows out through the oil supply branch pipe 141, it needs to be sprayed onto the winding coil 21 through the oil spray ring structure commonly used in this field. This is to compensate for the disadvantage that the winding coil 21 is far from the motor stator 2 and the cooling water channel 11 is difficult to cover. After the winding coil 21 is cooled by spraying oil, the hot oil flows back to the oil pan 3 under its own gravity, forming a circulation. The oil flows to the motor end cover through the second oil supply pipe 14 to supply oil to the motor rotor.

[0040] The oil filter 6 is directly connected to the oil cooler 5, the first oil supply line 13, and the second oil supply line 14. The oil filtration path is shortened, which can effectively filter impurities in the oil caused by winding aging, avoid blockage of each oil supply line, extend the service life of the motor, and reduce the frequency of maintenance. At the same time, the design of the second oil outlet line 14 realizes multiple uses of one oil, eliminating the need to set up a separate oil line for the motor rotor, further simplifying the structure.

[0041] As attached Figure 1-3 As shown, further, multiple heat dissipation fins 18 are integrally formed on the outer wall of the base body 1 located inside the oil pan 3. The multiple heat dissipation fins 18 are distributed in an array. Since the heat dissipation fins 18 are connected to the base body 1, there is heat conduction. Therefore, part of the heat of the hot oil in the oil pan 3 can be transferred to the base body 1 through the heat dissipation fins 18, and then the cooling water in the base body 1 will carry away this part of the heat to accelerate the heat dissipation efficiency.

[0042] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model; all technical solutions formed by equivalent transformation or equivalent substitution fall within the scope of protection of this utility model.

Claims

1. A compact oil-water hybrid cooling motor base, comprising a base body (1), a motor stator (2), and an oil pan (3), wherein the base body (1) has cooling water channels (11) for storing cooling water, the motor stator (2) is fixedly connected to the inner wall of the base body (1), and both ends of the motor stator (2) have winding coils (21), the oil pan (3) is integrally formed at the bottom of the base body (1) and communicates with the base body (1), and the oil pan (3) is used to temporarily store hot oil for cooling the winding coils (21); characterized in that: An oil pump (4) and an oil cooler (5) are provided on the outer wall of the oil pan (3). The oil pump (4) is connected to both the oil pan (3) and the oil cooler (5). The oil pump (4) is used to extract the hot oil in the oil pan (3) and transport it to the oil cooler (5). The oil cooler (5) is connected to the cooling water channel (11) on the machine base body (1). The hot oil in the oil cooler (5) exchanges heat with the cooling water in the cooling water channel (11) to cool the hot oil in the oil cooler (5). The base body (1) is provided with a mounting base (12), and an oil filter (6) is fixedly installed on the mounting base (12). The inlet of the oil filter (6) is connected to the oil cooler (5) to filter the oil from the oil cooler (5). The base body (1) is also provided with a first oil supply pipeline (13) and a second oil supply pipeline (14) that are connected to each other. An oil supply branch pipe (141) is connected to the second oil supply pipeline (14). The outlet of the oil filter (6) is connected to the first oil supply pipeline (13). The oil filtered by the oil filter (6) flows to the end cover of the motor through the second oil supply pipeline (14) and flows to the winding coil (21) through the oil supply branch pipe (141).

2. The compact oil-water hybrid cooling motor base according to claim 1, characterized in that: The oil pump (4) has an oil inlet (41) located inside the oil pan (3) to draw hot oil from the oil pan (3). The outer wall of the oil pan (3) has a first oil supply line (31) and a first oil outlet line (32). The first oil supply line (31) is used to connect the oil pump (4) and the oil cooler (5) to supply oil into the oil cooler (5). The first oil outlet line (32) is connected to the bottom of the oil cooler (5) to discharge the cooled oil.

3. A compact oil-water hybrid cooling motor housing according to claim 2, characterized in that: The mounting base (12) has a second oil supply line (122) and a second oil outlet line (123). The two ends of the second oil supply line (122) are respectively connected to the first oil outlet line (32) and the inlet of the oil filter (6) to input the cooling oil in the oil cooler (5) into the oil filter (6); the two ends of the second oil outlet line (123) are respectively connected to the first oil supply line (13) and the outlet of the oil filter (6) to discharge the oil filtered by the oil filter (6).

4. A compact oil-water hybrid cooling motor housing according to claim 2, characterized in that: The oil pan (3) is provided with an inlet pipe (33) and an outlet pipe (34). One end of the inlet pipe (33) and the outlet pipe (34) are connected to the cooling water channel (11), and the other end of the inlet pipe (33) and the outlet pipe (34) are connected to the oil cooler (5). The inlet pipe (33) is used to input the cooling water in the cooling water channel (11) into the oil cooler (5), and the outlet pipe (34) is used to output the cooling water in the oil cooler (5) into the cooling water channel (11).

5. A compact oil-water hybrid cooling motor housing according to claim 1, characterized in that: The outer wall of the base body (1) is provided with a water inlet (15) and a water outlet (16), both of which are connected to the cooling water channel (11).

6. A compact oil-water hybrid cooling motor housing according to claim 1, characterized in that: The base body (1) has an oil return port (17) at its bottom, and the base body (1) is connected to the oil pan (3) through the oil return port (17).

7. A compact oil-water hybrid cooling motor housing according to claim 1, characterized in that: Multiple heat dissipation ribs (18) are integrally formed on the outer wall of the base body (1) located inside the oil pan (3), and the multiple heat dissipation ribs (18) are distributed in an array.

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