Oil inlet cooling oil way structure for oil-cooled motor

Abstract

The technical problem to be solved by the utility model is to provide the oil inlet cooling oil path structure for the oil-cooled motor, and the oil inlet cooling oil path structure utilizes the casing and the end cover to form a combined oil inlet channel, so that the material and the volume of the rear end cover can be reduced, and the complexity and the cost of processing and casting are reduced. The oil inlet cooling oil way structure comprises a rear end cover, a machine shell, an oil storage shell, a cooler and an oil pump. A first oil groove is formed in the rear end cover, a second oil groove is formed in the machine shell, the first oil groove and the second oil groove form a closed cooling oil channel, the oil pump conveys cooling oil into the cooler through the cooling oil channel, and the oil grooves formed in the machine shell and the rear end cover form the cooling oil channel so that the material and the size of the rear end cover can be reduced. And the interchangeability of parts can be improved, the maintenance cost is reduced, the structure is compact, the design is simple, and the design complexity and the machining cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil circuit cooling, in particular to an oil inlet cooling oil circuit structure for an oil-cooled motor. Background Art

[0002] Oil-cooled motor is a type of motor that uses cooling oil to reduce the motor temperature. Through reasonable structural design and control system, oil-cooled motor can effectively reduce the motor temperature and improve the efficiency and life of the motor. However, oil-cooled motor also needs regular maintenance and replacement of cooling oil to ensure its normal operation. With the continuous advancement of science and technology, oil-cooled motors have been widely used in various fields, and have been continuously developed and improved, bringing great convenience and benefits to people's lives and production.

[0003] Patent No. 2021103666993 provides a motor cooling oil circuit structure. The motor in the patent is provided with two oil inlets. The patent sets a casing oil channel 4 in the front and rear end covers 18 of the casing, so that the cooling oil can effectively take away the heat of the air in the motor casing 1, especially the heat of the air inside the end cover 18, thereby increasing the convection heat exchange between the air in the casing and the surfaces of the motor end winding, stator, rotor 8, magnetic steel 7, etc. However, the end cover needs to be processed into a hollow structure, which increases the complexity of design and casting processing. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an oil inlet cooling oil circuit structure for an oil-cooled motor, wherein the oil inlet cooling oil circuit structure utilizes a casing and an end cover to form a combined oil inlet passage, which can reduce the material and volume of the rear end cover, thereby reducing the complexity and cost of processing and casting.

[0005] The utility model solves the technical problem by adopting the following technical solution: the oil inlet cooling oil circuit structure for oil-cooled motor comprises a rear end cover, a casing, an oil storage casing, a cooler and an oil pump;

[0006] The rear end cover is sealed and detachably connected to the casing, a first oil groove is provided on the rear end cover, and a second oil groove is provided on the casing, and the first oil groove and the second oil groove form a closed cooling oil channel;

[0007] The oil storage shell is arranged on the rear end cover, and a first oil inlet and a first oil outlet are arranged on the oil storage shell, the first oil inlet is communicated with the oil outlet of the oil-cooled motor, and the first oil outlet is communicated with one end of the cooling oil channel, the oil pump is arranged on the oil storage shell, the oil inlet of the oil pump is communicated with the first oil inlet, and the oil outlet of the oil pump is communicated with the first oil outlet;

[0008] The cooler is arranged on the casing, and a second oil inlet is arranged on the casing and is connected to the second oil tank. The cooler is connected to one end of the cooling oil channel through the second oil inlet. The oil pump sends the cooling oil to the cooler through the cooling oil channel. The oil outlet of the cooler is connected to the oil inlet of the oil-cooled motor.

[0009] Furthermore, the oil pump is arranged perpendicular to the axis of the casing.

[0010] Furthermore, the rear end cover is connected to the casing by means of bolts.

[0011] Furthermore, a sealing ring is provided between the rear end cover and the casing.

[0012] Furthermore, the cross-sectional shapes of the first oil groove and the second oil groove are both semicircular and the diameter of the oil groove is 10 mm.

[0013] Furthermore, the cooler adopts a cooler with a heat dissipation capacity of 12KW.

[0014] Furthermore, the rear end cover is cast from aluminum material of model 6061-T6.

[0015] Furthermore, the oil pump adopts an oil pump with a voltage of 24V and a cooling flow rate of 18L / min.

[0016] The beneficial effects of the utility model are as follows:

[0017] The utility model provides an oil inlet cooling oil circuit structure for an oil-cooled motor, utilizes oil grooves arranged on the casing and the rear end cover to form a cooling oil channel, and designs and processes the oil storage casing and the rear end cover to be detachable, which can reduce the material and volume of the rear end cover, reduce the cost of raw materials for the rear end cover, reduce the complexity and cost of machining and casting, and increase the interchangeability of parts, avoiding the risk of the rear end cover being replaced as a whole due to damage to one of the parts, reducing maintenance costs, and also reducing the material and processing costs of the end cover. The oil circuit is novel, the structure is compact, the design is simple, and the design complexity and processing costs are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the oil inlet cooling circuit structure for an oil-cooled motor according to the utility model;

[0019] Figure 2 It is a structural schematic diagram of the rear end cover and the first oil tank assembly of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the housing and the second oil tank combination of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the oil storage shell of the utility model;

[0022] Markings in the figure are as follows: first oil inlet 1, oil storage shell 2, first oil outlet 3, oil pump 4, cooling oil channel 5, cooler 6, second oil inlet 7, first oil groove 8, second oil groove 9, rear end cover 10, casing 11. DETAILED DESCRIPTION

[0023] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0024] It should be noted that the directions or positional relationships indicated by all directional indication terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" in the embodiments of the present application are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. They are only used to explain the relative positional relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0025] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0027] like Figure 1-4 As shown, the oil inlet cooling oil circuit structure for an oil-cooled motor includes a rear end cover 10, a housing 11, an oil storage housing 2, a cooler 6, and an oil pump 4;

[0028] The rear end cover 10 is sealed and detachably connected to the housing 11, so that the interchangeability of parts is increased, the risk of the rear end cover 10 being replaced as a whole due to damage to one of the parts is avoided, the maintenance cost is reduced, and the material and processing cost of the rear end cover 10 is also reduced. The rear end cover 10 is provided with a first oil groove 8, and the housing 11 is provided with a second oil groove 9. The first oil groove 8 and the second oil groove 9 form a closed cooling oil channel 5. The first oil groove 8 and the second oil groove 9 are combined to form a closed cooling oil channel 5, which eliminates traditional components such as oil pipes, and the design is simple and effectively reduces the complexity of the design;

[0029] The oil storage shell 2 is arranged on the rear end cover 10, and a first oil inlet 1 and a first oil outlet 3 are arranged on the oil storage shell 2. The first oil inlet 1 is connected to the oil outlet of the oil-cooled motor. Only one oil inlet is designed to complete the cooling of the stator winding and the rotor in the entire motor. The first oil outlet 3 is connected to one end of the cooling oil channel 5. The oil pump 4 is arranged on the oil storage shell 2, and the oil inlet of the oil pump 4 is connected to the first oil inlet 1, and the oil outlet of the oil pump 4 is connected to the first oil outlet 3;

[0030] The cooler 6 is arranged on the casing 11, and a second oil inlet 7 is provided on the casing 11 and is connected to the second oil groove 9. The cooler 6 is connected to one end of the cooling oil channel 5 through the second oil inlet 7. The oil pump 4 sends the cooling oil to the cooler 6 through the cooling oil channel 5. The oil outlet of the cooler 6 is connected to the oil inlet of the oil-cooled motor. Through the circulation of the oil pump 4 and the cooling effect of the cooler 6, the temperature of the motor can be effectively reduced and the efficiency and life of the motor can be improved.

[0031] like Figure 1 As shown, in the present embodiment, preferably, the oil pump 4 is arranged perpendicularly to the axis of the casing 11. The vertically arranged structural design facilitates disassembly and replacement on the whole machine, saves the layout space of the whole vehicle, and avoids interference with the inlet and outlet pipes on the vehicle transmission and the casing 11; it facilitates the layout of the oil circuit, and the oil circuit can directly enter the cooler 6 through an oil circuit composed of the rear end 10 and the casing 11.

[0032] In this embodiment, preferably, the rear end cover 10 is connected to the housing 11 by means of bolts.

[0033] In this embodiment, preferably, a sealing ring is provided between the rear end cover 10 and the housing 11 .

[0034] In this embodiment, as a preference, the cross-sectional shapes of the first oil groove 8 and the second oil groove 9 are both semicircular and the diameters of the two oil grooves are both 10 mm.

[0035] In this embodiment, preferably, the cooler 6 adopts a cooler with a heat dissipation capacity of 12KW.

[0036] In this embodiment, preferably, the rear end cover 10 is cast from aluminum material of model 6061-T6.

[0037] In this embodiment, preferably, the oil pump 4 adopts an oil pump with a voltage of 24V and a cooling flow rate of 18L / min.

[0038] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An oil inlet cooling circuit structure for an oil-cooled motor, characterized in that: It comprises a rear end cover (10), a casing (11), an oil storage casing (2), a cooler (6), and an oil pump (4); The rear end cover (10) and the housing (11) are sealed and detachable, the rear end cover (10) is provided with a first oil groove (8), the housing (11) is provided with a second oil groove (9), and the first oil groove (8) and the second oil groove (9) form a closed cooling oil channel (5); The oil storage shell (2) is arranged on the rear end cover (10), and is provided with a first oil inlet (1) and a first oil outlet (3), the first oil inlet (1) is connected to the oil outlet of the oil-cooled motor, and the first oil outlet (3) is connected to one end of the cooling oil channel (5); the oil pump (4) is arranged on the oil storage shell (2), the oil inlet of the oil pump (4) is connected to the first oil inlet (1), and the oil outlet of the oil pump (4) is connected to the first oil outlet (3); The cooler (6) is arranged on the casing (11); a second oil inlet (7) is arranged on the casing (11) and is connected to the second oil groove (9); the cooler (6) is connected to one end of the cooling oil channel (5) through the second oil inlet (7); the oil pump (4) delivers cooling oil to the cooler (6) through the cooling oil channel (5); and the oil outlet of the cooler (6) is connected to the oil inlet of the oil-cooled motor.

2. The oil inlet cooling circuit structure for an oil-cooled motor according to claim 1, characterized in that: The oil pump (4) is arranged perpendicular to the axis of the casing (11).

3. The oil inlet cooling circuit structure for an oil-cooled motor according to claim 1, characterized in that: The rear end cover (10) is connected to the casing (11) by means of bolts.

4. The oil inlet cooling oil circuit structure for an oil-cooled motor according to claim 1, characterized in that: A sealing ring is provided between the rear end cover (10) and the casing (11).

5. The oil inlet cooling oil circuit structure for an oil-cooled motor according to claim 1, characterized in that: The cross-sectional shapes of the first oil groove (8) and the second oil groove (9) are both semicircular, and the diameters of the first oil groove (8) and the second oil groove (9) are both 10 mm.

6. The oil inlet cooling oil circuit structure for an oil-cooled motor according to claim 1, characterized in that: The cooler (6) is a cooler with a heat dissipation capacity of 12KW.

7. The oil inlet cooling oil circuit structure for an oil-cooled motor according to claim 1, characterized in that: The rear end cover (10) is cast from aluminum material of model 6061-T6.

8. The oil inlet cooling circuit structure for an oil-cooled motor according to claim 1, characterized in that: The oil pump (4) adopts an oil pump with a voltage of 24V and a cooling flow rate of 18L / min.

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