Oil cooling device and motor system

Abstract

The utility model belongs to the technical field of motors, and specifically relates to an oil cooling device and a motor system. The motor system comprises: a motor device and an oil cooling device; wherein the oil cooling device is connected to the motor device; the oil cooling device is suitable for injecting cooled cooling oil into the motor device; and the oil cooling device is suitable for recovering cooling oil flowing out of the motor device; the utility model can realize the diversion of cooling oil to various parts of the motor device by assembling the oil cooling device with the motor and opening corresponding channels on the motor device, so that the cooling oil is sprayed to the iron core and winding ends on the motor stator at the same time, greatly improving the cooling effect and ensuring the reduction of the temperature rise of the motor system. At the same time, the cooling oil can actively lubricate the components in the motor device, effectively solving the problem of difficult heat dissipation of the motor, and using the interference assembly scheme with strong operability, which can effectively reduce the product volume.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, and in particular relates to an oil cooling device and a motor system. Background Art

[0002] Traditional motor systems are cooled by water, and there are many water cooling solutions, such as circumferential water channels, spiral water channels, semi-spiral water channels, and axial water channels. However, the motor system has the following disadvantages when it is cooled by water: it can only cool the core part that is in contact with the casing. At the same time, due to the size and structural limitations of the end, the water channel cannot completely wrap the entire core, and it cannot cool the winding that generates huge heat. The cooling is uneven, and heat islands are easily formed, causing the motor temperature to rise too high and too fast, limiting the performance of the motor and affecting the insulation performance of the motor.

[0003] Traditional motor water cooling solutions cannot directly cool the end windings, have low cooling efficiency, and cannot meet the performance requirements of high-power motors.

[0004] Therefore, it is urgent to develop a new oil cooling device and motor system to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide an oil cooling device and a motor system.

[0006] In order to solve the above technical problems, the utility model provides an oil cooling device, which includes: an oil storage unit, an oil cooler and an oil pump; wherein the oil storage unit and the oil cooler are respectively connected to the motor device, and the oil pump is connected between the oil storage unit and the oil cooler; the oil pump is suitable for pumping the cooling oil in the oil storage unit into the oil cooler, and the cooling oil is injected into the motor device after being cooled by the oil cooler; and the oil storage unit is suitable for recovering the cooling oil flowing out of the motor device.

[0007] Specifically, the oil storage unit includes: an oil storage container; the oil storage container is communicated with the motor device, and the oil storage container is connected to the oil cooler through an oil pump.

[0008] On the other hand, the utility model provides a motor system, which includes: a motor device and an oil cooling device as described above; wherein the oil cooling device is connected to the motor device; the oil cooling device is suitable for injecting cooled cooling oil into the motor device; and the oil cooling device is suitable for recovering the cooling oil flowing out of the motor device.

[0009] Specifically, the motor device includes: a front end cover assembly, a casing assembly and a rear end cover assembly; the front end cover assembly, the casing assembly and the rear end cover assembly are sealed and connected in sequence, the oil cooling device is connected to the front end cover assembly, the casing assembly and the rear end cover assembly are connected to the front end cover assembly respectively, and the casing assembly is connected to the oil cooling device; the oil cooling device injects the cooled cooling oil into the front end cover assembly, and the front end cover assembly is suitable for guiding the cooling oil to flow to the casing assembly and the rear end cover assembly; the oil cooling device is suitable for recovering the cooling oil flowing out of the casing assembly.

[0010] Specifically, the front end cover assembly includes: a front end cover shell, a front bearing unit and a clutch; a front bearing chamber and a first installation chamber are arranged in the front end cover shell, so as to respectively install the front bearing unit and the clutch; the front end cover shell is provided with a first oil guide channel, and the first oil guide channel is respectively connected with the oil cooling device, the front bearing chamber and the first installation chamber; the oil cooling device injects the cooled cooling oil into the first oil guide channel so as to flow to the front bearing chamber and the first installation chamber.

[0011] Specifically, the casing assembly includes: a motor housing, a first oil guide pipe and a second oil guide pipe; the motor housing connects the front cover shell and the rear cover assembly; a second installation chamber is opened in the motor housing for installing the motor stator, and the second installation chamber is connected to the oil cooling device; the first oil guide pipe and the second oil guide pipe are respectively embedded in the motor housing, the first oil guide pipe connects the first oil guide channel and the rear cover assembly, and the second oil guide pipe is connected to the second installation chamber; the cooling oil in the first oil guide channel flows to the rear cover assembly through the first oil guide pipe; the cooling oil in the first oil guide channel flows to the second installation chamber through the second oil guide pipe; the cooling oil flows back to the oil cooling device through the second installation chamber.

[0012] The first oil guide pipe and the second oil guide pipe are provided with a plurality of oil holes.

[0013] Specifically, an oil guide groove is formed on the inner side wall of the second installation chamber.

[0014] Specifically, the rear end cover assembly includes: a rear end cover shell and a rear bearing unit; the rear end cover shell is provided with a rear bearing chamber for installing the rear bearing unit; the rear end cover shell is provided with a second oil guide channel, and the second oil guide channel is respectively connected to the first oil guide pipe and the rear bearing chamber; the second oil guide channel is suitable for guiding cooling oil to flow into the rear bearing chamber.

[0015] Specifically, a third oil guide channel is provided on the motor housing, and the third oil guide channel is communicated with the first oil guide channel; the oil cooling device is installed on the motor housing, and the oil cooling device is communicated with the third oil guide channel.

[0016] The beneficial effect of the utility model is that, by assembling the oil cooling device with the motor and opening corresponding channels on the motor device, the utility model can realize the diversion of cooling oil to various parts of the motor device, so that the cooling oil is sprayed to the iron core and winding ends on the motor stator at the same time, thereby greatly improving the cooling effect and ensuring the reduction of the temperature rise of the motor system. At the same time, the cooling oil can actively lubricate the components in the motor device, effectively solving the problem of difficult heat dissipation of the motor, and continuing to use the interference assembly scheme with strong operability, which can effectively reduce the product volume.

[0017] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood by implementing the present invention.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural diagram of the motor system of the utility model;

[0021] Figure 2 It is a structural diagram of the first oil guide channel of the utility model;

[0022] Figure 3 It is a structural diagram of the housing assembly of the utility model;

[0023] Figure 4 It is a structural diagram of the rear bearing unit of the utility model;

[0024] Figure 5 It is a structural diagram of the motor housing of the utility model;

[0025] Figure 6 It is a structural diagram of the interference fit between the motor housing and the motor stator of the utility model.

[0026] In the figure:

[0027] 1. Oil storage unit; 11. Oil storage container;

[0028] 2. Oil cooler;

[0029] 3. Oil pump;

[0030] 4. front end cover assembly; 41. front end cover shell; 42. front bearing unit; 43. clutch; 44. first oil guide channel;

[0031] 5. Housing assembly; 51. Motor housing; 511. Oil guide groove; 52. First oil guide pipe; 53. Second oil guide pipe; 54. Third oil guide channel; 55. Oil through hole;

[0032] 6. rear end cover assembly; 61. rear end cover shell; 62. rear bearing unit;

[0033] 7. Motor stator. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Embodiment 1, in this embodiment, as Figure 1 As shown, this embodiment provides an oil cooling device, which includes: an oil storage unit 1, an oil cooler 2 and an oil pump 3; wherein the oil storage unit 1 and the oil cooler 2 are respectively connected to the motor device, and the oil pump 3 is connected between the oil storage unit 1 and the oil cooler 2; the oil pump 3 is suitable for pumping the cooling oil in the oil storage unit 1 into the oil cooler 2, and the cooling oil is injected into the motor device after being cooled by the oil cooler 2; and the oil storage unit 1 is suitable for recovering the cooling oil flowing out of the motor device.

[0036] Specifically, the oil pump 3 draws the cooling oil in the oil storage unit 1 into the oil cooler 2 for cooling, and then injects the cooled cooling oil into the motor device. The cooling oil circulates in the motor device and then flows back to the oil storage unit 1, which can enhance the cooling effect of the motor device. Pipes are arranged in the motor device to meet the demand for simultaneous heat dissipation of the iron core and the winding ends, thereby ensuring that the overall temperature rise of the motor device is reduced.

[0037] In this embodiment, the oil storage unit 1 includes: an oil storage container 11 ; the oil storage container 11 is communicated with the motor device, and the oil storage container 11 is connected to the oil cooler 2 through the oil pump 3 .

[0038] Specifically, the oil storage container 11 can be a box, a warehouse, a tank or other container.

[0039] Embodiment 2, on the basis of embodiment 1, as Figures 1 to 6As shown, this embodiment provides a motor system, which includes: a motor device and an oil cooling device as provided in Example 1; wherein the oil cooling device is connected to the motor device; the oil cooling device is suitable for injecting cooled cooling oil into the motor device; and the oil cooling device is suitable for recovering the cooling oil flowing out of the motor device.

[0040] In this embodiment, by assembling the oil cooling device with the motor and opening corresponding channels on the motor device, the cooling oil can be diverted to various parts of the motor device, so that the cooling oil is sprayed to the iron core and the winding ends on the motor stator 7 at the same time, which greatly improves the cooling effect and ensures that the temperature rise of the motor system is reduced. At the same time, the cooling oil can actively lubricate the components in the motor device, effectively solving the problem of difficult heat dissipation of the motor, and continuing to use the interference assembly solution with strong operability can effectively reduce the product volume.

[0041] In this embodiment, the motor device includes: a front end cover assembly 4, a casing assembly 5 and a rear end cover assembly 6; the front end cover assembly 4, the casing assembly 5 and the rear end cover assembly 6 are sealed and connected in sequence, the oil cooling device is connected to the front end cover assembly 4, the casing assembly 5 and the rear end cover assembly 6 are respectively connected to the front end cover assembly 4, and the casing assembly 5 is connected to the oil cooling device; the oil cooling device injects the cooled cooling oil into the front end cover assembly 4, and the front end cover assembly 4 is suitable for guiding the cooling oil to flow to the casing assembly 5 and the rear end cover assembly 6; the oil cooling device is suitable for recovering the cooling oil flowing out of the casing assembly 5.

[0042] Specifically, cooling oil is pumped into the motor device from the oil cooling device, and at the same time, the cooling oil circulates in the front cover assembly 4, the casing assembly 5, and the rear cover assembly 6 and then flows back to the oil cooling device. The cooling oil can take away the heat in the front cover assembly 4, the casing assembly 5, and the rear cover assembly 6. At the same time, the oil cooling device can cool the cooling oil, which can enhance the heat dissipation effect of the motor device. At the same time, the cooling oil circulating in the front cover assembly 4, the casing assembly 5, and the rear cover assembly 6 can also have the effect of lubricating various components.

[0043] In this embodiment, the front end cover assembly 4 includes: a front end cover shell 41, a front bearing unit 42 and a clutch 43; a front bearing chamber and a first installation chamber are set in the front end cover shell 41, which are used to install the front bearing unit 42 and the clutch 43 respectively; the front end cover shell 41 is provided with a first oil guide channel 44, and the first oil guide channel 44 is connected to the oil cooling device, the front bearing chamber, and the first installation chamber respectively; the oil cooling device injects the cooled cooling oil into the first oil guide channel 44 to flow to the front bearing chamber and the first installation chamber.

[0044] Specifically, the first oil guide channel 44 is distributed in a network shape, and the oil cooling device injects cooling oil into the first oil guide channel 44, and then the first oil guide channel 44 guides the cooling oil to the middle position of the front end cover shell 41 and then splits it. At the same time, the first oil guide channel 44 is divided into two paths and enters the front bearing chamber and the first installation chamber respectively, which can dissipate heat and lubricate the front bearing unit 42 and the clutch 43, and a valve is set at the oil inlet of the first oil guide channel 44, and the oil inlet amount can be controlled by controlling the valve opening.

[0045] In this embodiment, the casing assembly 5 includes: a motor housing 51, a first oil guide pipe 52 and a second oil guide pipe 53; the motor housing 51 connects the front cover shell 41 and the rear cover assembly 6; a second installation chamber is opened in the motor housing 51 for installing the motor stator 7, and the second installation chamber is connected to the oil cooling device; the first oil guide pipe 52 and the second oil guide pipe 53 are respectively embedded in the motor housing 51, the first oil guide pipe 52 connects the first oil guide channel 44 and the rear cover assembly 6, and the second oil guide pipe 53 is connected to the second installation chamber; the cooling oil in the first oil guide channel 44 flows to the rear cover assembly 6 through the first oil guide pipe 52; the cooling oil in the first oil guide channel 44 flows to the second installation chamber through the second oil guide pipe 53; the cooling oil flows back to the oil cooling device through the second installation chamber.

[0046] Specifically, the first oil guide pipe 52 and the second oil guide pipe 53 cross the motor housing 51. The first oil guide pipe 52 guides the cooling oil in the first oil guide channel 44 to flow toward the rear end cover assembly 6, and the second oil guide pipe 53 guides the cooling oil in the first oil guide channel 44 to flow toward the second installation chamber.

[0047] In this embodiment, a plurality of oil holes 55 are formed in the first oil guide pipe 52 and the second oil guide pipe 53 .

[0048] Specifically, the cooling oil flows into the motor stator 7 through the oil holes 55 on the first oil guide pipe 52 and the second oil guide pipe 53, and can dissipate heat from the winding ends and the iron core itself.

[0049] In this embodiment, an oil guide groove 511 is formed on the inner wall of the second installation chamber.

[0050] Specifically, the motor housing 51 is interference fit with the motor stator 7, and the cooling oil from the first oil guide pipe 52 and the second oil guide pipe 53 can dissipate heat to the iron core through the oil guide groove 511, while guiding the cooling oil to flow back to the oil cooling device.

[0051] In this embodiment, the rear end cover assembly 6 includes: a rear end cover shell 61 and a rear bearing unit 62; the rear end cover shell 61 is provided with a rear bearing chamber for installing the rear bearing unit 62; the rear end cover shell 61 is provided with a second oil guide channel, and the second oil guide channel is respectively connected to the first oil guide pipe 52 and the rear bearing chamber; the second oil guide channel is suitable for guiding the cooling oil to flow into the rear bearing chamber.

[0052] In this embodiment, a third oil channel 54 is provided on the motor housing 51 , and the third oil channel 54 is connected to the first oil channel 44 ; the oil cooling device is installed on the motor housing 51 , and the oil cooling device is connected to the third oil channel 54 .

[0053] Specifically, the oil cooling device injects cooling oil into the first oil guiding channel 44 through the third oil guiding channel 54, and the motor housing 51 and the front end cover shell 41 are end-face sealed using a sealing ring, thereby realizing the separate installation of the front end cover shell 41 and the motor housing 51, and at the same time improving the sealing of the connection between the third oil guiding channel 54 and the first oil guiding channel 44.

[0054] In summary, the utility model can realize the diversion of cooling oil to various parts of the motor device by assembling the oil cooling device with the motor and opening corresponding channels on the motor device, so that the cooling oil is sprayed to the iron core and the winding end on the motor stator at the same time, which greatly improves the cooling effect and ensures the reduction of the temperature rise of the motor system. At the same time, the cooling oil can actively lubricate the components in the motor device, effectively solving the problem of difficult heat dissipation of the motor, and continues to use the interference assembly scheme with strong operability, which can effectively reduce the product volume.

[0055] All devices (parts without specific structure) selected in this application are universal standard parts or parts known to those skilled in the art, and their structures and principles can be known by those skilled in the art through technical manuals or conventional experimental methods. In addition, the software programs involved in this application are all prior art, and this application does not involve any improvement to the software programs.

[0056] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0058] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0059] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0060] In addition, each functional unit in each embodiment of the present utility model may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0061] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An oil cooling device, characterized in that: include: Oil storage unit, oil cooler and oil pump; in The oil storage unit and the oil cooler are respectively connected to the motor device, and the oil pump is connected between the oil storage unit and the oil cooler; The oil pump is suitable for pumping the cooling oil in the oil storage unit into the oil cooler, and the cooling oil is injected into the motor device after being cooled by the oil cooler; and The oil storage unit is suitable for recovering cooling oil flowing out of the motor device.

2. The oil cooling device according to claim 1, characterized in that: The oil storage unit comprises: an oil storage container; The oil storage container is communicated with the motor device, and the oil storage container is connected to the oil cooler through an oil pump.

3. A motor system, characterized in that: include: A motor device and an oil cooling device as claimed in any one of claims 1 to 2; wherein The oil cooling device is in communication with the motor device; The oil cooling device is suitable for injecting cooled cooling oil into the motor device; and The oil cooling device is suitable for recovering cooling oil flowing out of the motor device.

4. The motor system according to claim 3, characterized in that The motor device comprises: a front end cover assembly, a housing assembly and a rear end cover assembly; The front end cover assembly, the housing assembly, and the rear end cover assembly are sealed and connected in sequence, the oil cooling device is in communication with the front end cover assembly, the housing assembly and the rear end cover assembly are in communication with the front end cover assembly respectively, and the housing assembly is in communication with the oil cooling device; The oil cooling device injects cooled cooling oil into the front cover assembly, and the front cover assembly is suitable for guiding the cooling oil to flow toward the casing assembly and the rear cover assembly; The oil cooling device is suitable for recovering cooling oil flowing out of the casing assembly.

5. The motor system according to claim 4, characterized in that The front end cover assembly comprises: a front end cover shell, a front bearing unit and a clutch; A front bearing chamber and a first installation chamber are provided in the front end cover shell, for installing the front bearing unit and the clutch respectively; The front end cover shell is provided with a first oil guide channel, and the first oil guide channel is communicated with the oil cooling device, the front bearing chamber, and the first installation chamber respectively; The oil cooling device injects the cooled cooling oil into the first oil guide channel so as to flow to the front bearing chamber and the first installation chamber.

6. The motor system according to claim 5, characterized in that The housing assembly comprises: a motor housing, a first oil guide pipe and a second oil guide pipe; The motor housing is connected to the front cover shell and the rear cover assembly; A second installation chamber is provided in the motor housing for installing the motor stator, and the second installation chamber is communicated with the oil cooling device; The first oil guide pipe and the second oil guide pipe are respectively embedded in the motor housing, the first oil guide pipe is connected with the first oil guide channel and the rear end cover assembly, and the second oil guide pipe is connected with the second installation chamber; The cooling oil in the first oil guide channel flows to the rear end cover assembly through the first oil guide pipe; The cooling oil in the first oil guide channel flows into the second installation chamber through the second oil guide pipe; The cooling oil flows back to the oil cooling device through the second installation chamber.

7. The motor system according to claim 6, characterized in that The first oil guide pipe and the second oil guide pipe are provided with a plurality of oil holes.

8. The motor system according to claim 6, characterized in that An oil guide groove is formed on the inner side wall of the second installation chamber.

9. The motor system according to claim 6, characterized in that The rear end cover assembly comprises: a rear end cover shell and a rear bearing unit; The rear end cover shell is provided with a rear bearing chamber for installing the rear bearing unit; The rear end cover shell is provided with a second oil guide channel, and the second oil guide channel is respectively connected to the first oil guide pipe and the rear bearing chamber; The second oil guiding channel is suitable for guiding cooling oil to flow into the rear bearing chamber.

10. The motor system according to claim 6, characterized in that A third oil guide channel is provided on the motor housing, and the third oil guide channel is connected to the first oil guide channel; The oil cooling device is installed on the motor housing, and the oil cooling device is communicated with the third oil guide channel.

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