Oil-water composite cooling high-speed flat wire motor

Abstract

This utility model discloses an oil-water hybrid cooling high-speed flat wire motor, comprising a housing, a front end cover at one end of the housing, a rear end cover at the other end of the housing, an oil pan at the bottom of the housing, a detachable oil pump on one side of the oil pan, a stator and a rotor inside the housing, a main shaft at the center of the rotor, a hollow first oil cooling channel inside the main shaft, several interconnected second oil cooling channels inside the rotor, a third oil cooling channel between the stator and the housing, and the first, second, and third oil cooling channels being interconnected. An independent water cooling channel is located inside the stator. This oil-water hybrid cooling high-speed flat wire motor uses oil and coolant as a redundant design, ensuring that even if one cooling method fails, the other cooling method will not affect the motor's heat dissipation performance, effectively improving the stability and reliability of the motor's heat dissipation.

Description

Technical Field

[0001] This utility model relates to an electric motor, and more specifically, to a high-speed flat wire motor with oil-water composite cooling. Background Technology

[0002] To meet the demands of customers for low-speed, high-torque and high-speed, high-torque permanent magnet synchronous motors in the construction machinery market, OEMs often employ more parallel branches and thicker flat copper wires in their designs to improve overall performance. However, this results in greater heat generation, and the amount of heat dissipation is often directly proportional to performance. To improve motor efficiency, timely cooling is necessary to ensure thermal balance. Traditional motors use water cooling, which offers high reliability, but its indirect cooling method leads to lower efficiency. With the technology being adopted in the passenger vehicle market, many manufacturers now use oil cooling. However, this requires high purity cooling oil, and the long-term high-temperature operating environment can cause aging of internal plastic components and seals, posing a risk of leakage. Utility Model Content

[0003] Therefore, it is necessary to provide a high-speed flat wire motor with oil-water composite cooling to address the above-mentioned technical problems.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A high-speed flat wire motor with oil-water composite cooling is characterized in that the motor includes a housing, one end of which is provided with a front end cover, the other end of which is provided with a rear end cover, a junction box is provided on the upper part of the housing, a pair of cold water inlets are provided on the outer wall of the housing, an oil pan is provided on the bottom of the housing, and a removable oil pump is provided on one side of the oil pan.

[0006] The housing contains a stator and a rotor, and the rotor has a main shaft at its center.

[0007] The main shaft has a hollow first oil cooling channel, the rotor has several interconnected second oil cooling channels, and the stator has a third oil cooling channel between it and the housing. The first, second, and third oil cooling channels are interconnected.

[0008] The stator has an independent water-cooling channel inside, which is connected to the cold water interface.

[0009] In a preferred embodiment of the present invention, a heat sink is provided on the outer side of the housing.

[0010] In a preferred embodiment of this utility model, the heat sink is a finned heat sink.

[0011] In a preferred embodiment of this utility model, a first bearing is provided at the center of the front end cover, and a second bearing is provided at the center of the rear end cover. The main shaft passes through the first bearing and the second bearing. A first bearing oil cooling channel is provided inside the front end cover, and a second bearing oil cooling channel is provided inside the rear end cover. The first bearing oil cooling channel cooperates with the first bearing, that is, the second bearing oil cooling channel cooperates with the second bearing.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This invention provides a high-speed flat wire motor with oil-water composite cooling. This oil-water composite cooling high-speed flat wire motor 1 uses a redundant design for both oil and coolant. Even if one cooling method fails, the other can still ensure that the motor's heat dissipation performance is not affected, effectively improving the stability and reliability of the motor's heat dissipation. Furthermore, because the cooling oil circulates independently inside the motor, rather than originating from the gearbox, the cooling oil has high purity and is free of impurities such as iron filings that could affect insulation, thus preventing insulation failures in the motor. Attached Figure Description

[0014] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of the oil-water composite cooling high-speed flat wire motor of this utility model;

[0016] Figure 2 for Figure 1 A three-dimensional structural diagram of a high-speed flat wire motor with oil-water composite cooling, shown from another perspective;

[0017] Figure 3 for Figure 1 A three-dimensional structural diagram of a high-speed flat wire motor with oil-water composite cooling, shown from another perspective;

[0018] Figure 4 for Figure 3 A cross-sectional view of the motor along line AA;

[0019] The markings in the diagram are explained as follows: 10, stator; 101, water cooling channel; 11, rotor; 2, housing; 21, cold water interface; 3, front end cover; 31, first bearing oil cooling channel; 4, rear end cover; 41, second bearing oil cooling channel; 5, spindle; 6, oil pan; 7, oil pump; 8, radiator; 9, junction box; K1, first bearing; K2, second bearing; S1, first oil cooling channel; S2, second oil cooling channel; S3, third oil cooling channel. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0021] like Figures 1 to 4 As shown, the oil-water composite cooling high-speed flat wire motor 1 includes a housing 2. One end of the housing 2 is provided with a front end cover 3, and the other end of the housing 2 is provided with a rear end cover 4. The upper part of the housing 2 is provided with a junction box 9. The outer wall of the housing 2 is provided with a pair of cold water inlets 21. The bottom of the housing 2 is provided with an oil pan 6, and a detachable oil pump 7 is provided on one side of the oil pan 6.

[0022] The housing 2 contains a stator 10 and a rotor 11, with a main shaft 5 located at the center of the rotor 11.

[0023] like Figure 4 As shown, the main shaft 5 has a hollow first oil cooling channel S1, the rotor 11 has several interconnected second oil cooling channels S2, and the stator 10 and the housing 2 have a third oil cooling channel S3. The first oil cooling channel S1, the second oil cooling channel S2 and the third oil cooling channel S3 are interconnected.

[0024] The stator 10 has an independent water cooling channel 101 inside, which is connected to the cold water interface 21.

[0025] In addition, a radiator 8 is provided on the outside of the housing 2. The radiator 8 is a finned radiator.

[0026] The front cover 3 has a first bearing K1 at its center, and the rear cover 4 has a second bearing K2 at its center. The main shaft 5 passes through the first bearing K1 and the second bearing K2. The front cover 3 has a first bearing oil cooling channel 31 inside, and the rear cover 4 has a second bearing oil cooling channel 41 inside. The first bearing oil cooling channel 31 cooperates with the first bearing K1, and the second bearing oil cooling channel 41 cooperates with the second bearing K2.

[0027] The working principle of this oil-water composite cooling high-speed flat wire motor is explained below.

[0028] After the motor starts, the oil pump 7 starts working. The cooling oil first passes through the radiator 8, then flows between the first oil cooling channel S1, the second oil cooling channel S2 and the third oil cooling channel S3, and finally returns to the oil pump 7. This cycle repeats to cool the stator 10 and the rotor 11.

[0029] Simultaneously, cooling water enters the water-cooling channel 101 inside the stator 10 via the cold water interface 21, effectively cooling the stator 10 and the housing 2. It should be noted that, since the water-cooling channel 101 surrounds the oil-cooling channel, it can also indirectly conduct heat to cool the cooling oil.

[0030] While the cooling oil circulates, the first bearing K1 and the second bearing K2 are effectively lubricated by utilizing the first bearing oil cooling channel 31 and the second bearing oil cooling channel 41, thus extending the bearing's lifespan.

[0031] The oil-water composite cooling high-speed flat wire motor 1 uses oil and coolant as a redundant design. Even if one cooling method fails, the other cooling method can ensure that the motor's heat dissipation performance will not be affected, effectively improving the stability and reliability of motor heat dissipation.

[0032] In addition, because the cooling oil circulates independently inside the motor, rather than coming from the gearbox, the cooling oil is highly pure and free of impurities such as iron filings that could affect insulation, thus preventing insulation failures in the motor.

[0033] Obviously, the embodiments described above are only some embodiments of this application, and not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application.

Claims

1. A high-speed flat wire motor with oil-water composite cooling, characterized in that, The oil-water composite cooling high-speed flat wire motor includes a housing (2), one end of which is provided with a front end cover (3), the other end of which is provided with a rear end cover (4), the upper part of which is provided with a junction box (9), the outer wall of which is provided with a pair of cold water inlets (21), the bottom of which is provided with an oil pan (6), and a detachable oil pump (7) is provided on one side of the oil pan (6). The housing (2) is provided with a stator (10) and a rotor (11), and the rotor (11) is provided with a main shaft (5) at its center. The main shaft (5) is provided with a hollow first oil cooling channel (S1), the rotor (11) is provided with several interconnected second oil cooling channels (S2), and the stator (10) is provided with a third oil cooling channel (S3) between the housing (2). The first oil cooling channel (S1), the second oil cooling channel (S2) and the third oil cooling channel (S3) are interconnected. The stator (10) has an independent water cooling channel (101) inside, which is connected to the cold water interface (21).

2. The oil-water composite cooling high-speed flat wire motor according to claim 1, characterized in that, The outer side of the housing (2) is provided with a heat sink (8).

3. The oil-water composite cooling high-speed flat wire motor according to claim 2, characterized in that, The heat sink (8) is a finned heat sink.

4. The oil-water composite cooling high-speed flat wire motor according to claim 1, characterized in that, The front cover (3) is provided with a first bearing (K1) at its center, and the rear cover (4) is provided with a second bearing (K2) at its center. The main shaft (5) passes through the first bearing (K1) and the second bearing (K2). The front cover (3) is provided with a first bearing oil cooling channel (31), and the rear cover (4) is provided with a second bearing oil cooling channel (41). The first bearing oil cooling channel (31) is matched with the first bearing (K1), that is, the second bearing oil cooling channel (41) is matched with the second bearing (K2).

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