Motor cooling system, motor and vehicle

Abstract

The invention discloses a motor cooling system, a motor and a vehicle. The motor cooling system comprises a box body which is connected with a shell of a motor and is used for accommodating a first cooling medium, and the box body is provided with a first orifice and a second orifice; the first flow channel is constructed on the shell and is provided with a first port and a second port, and the first port communicates with the first hole opening so that a first cooling medium in the box body can flow into the first flow channel through the first hole opening and the first port; the second port is adjacent to a target position in the shell, so that the first cooling medium flowing into the first flow channel can flow to the target position after flowing out of the second port; the second flow channel is constructed on the shell and provided with a third port and a fourth port, the third port communicates with the second orifice, the fourth port communicates with the containing part in the shell, and the first cooling medium reaches the containing part after flowing through the target position; and the pump device is arranged on the outer wall of the shell and is arranged to pump the first cooling medium reaching the containing part back to the box body through the second flow channel and the second orifice.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motor equipment, and in particular to a motor cooling system, a motor and a vehicle. BACKGROUND

[0002] Various types of motor products have been widely used in many fields, for example, a motor can be configured on a new energy vehicle to mainly serve as a power output. When the motor is working, electric current passing through the coil will generate electric power, part of which will be converted into mechanical power, and the other part will be converted into heat energy, thereby generating heat inside the motor. In particular, in some application scenarios, users have an increasing demand for high-power motors, and such high-power motors will release more heat when working.

[0003] The present application has found that the traditional motor cooling processing means is generally difficult to effectively solve the heat dissipation problem, and they can generally only take away the heat on the surface of the motor, and the cooling effect inside the motor is poor, which will affect the service life of the motor over a long period of time, leading to problems such as accelerated aging of motor parts, motor damage, system failure and the like. SUMMARY

[0004] Therefore, the present application provides a motor cooling system, a motor and a vehicle, so as to solve or at least alleviate one or more of the above problems and other aspects in the prior art, or to provide an alternative technical solution for the prior art.

[0005] According to one aspect of the present application, a motor cooling system is first provided, comprising:

[0006] a box body connected with a shell of a motor for containing a first cooling medium, the box body having a first aperture and a second aperture;

[0007] a first flow channel configured on the shell and having a first port and a second port, the first port being in communication with the first aperture so that the first cooling medium in the box body can flow into the first flow channel via the first aperture and the first port, and the second port being arranged adjacent to a target position in the shell so that the first cooling medium flowing into the first flow channel can flow to the target position from the second port;

[0008] a second flow channel configured on the shell and having a third port and a fourth port, the third port being in communication with the second aperture, and the fourth port being in communication with a containing portion in the shell, the first cooling medium flowing through the target position to reach the containing portion; and

[0009] A pump device is arranged on an outer wall of the housing and configured to pump the first cooling medium that has reached the accommodation portion back to the tank via the second flow passage and the second orifice.

[0010] In the motor cooling system according to the present application, optionally, the motor cooling system further comprises:

[0011] A cooler is arranged on an outer wall of the housing and configured to perform a cooling process on the first cooling medium; and / or

[0012] A filter is arranged on an outer wall of the housing and configured to perform a filtering process on the first cooling medium flowing through the first flow passage and / or the second flow passage.

[0013] In the motor cooling system according to the present application, optionally, the cooler is configured to exchange heat with the first cooling medium flowing through the second flow passage, the cooler has an input port and an output port, and a second cooling medium exchanges heat with the first cooling medium during a period from flowing into the cooler through the input port to flowing out of the cooler through the output port; and / or

[0014] The tank is located at an upper portion of the housing relative to the pump device, the cooler is arranged between the tank and the pump device, and the filter is arranged adjacent to the pump device.

[0015] In the motor cooling system according to the present application, optionally, the cooler, the filter and the pump device are arranged on a same side relative to an axis of the motor.

[0016] In the motor cooling system according to the present application, optionally, the tank is integrally formed with the housing and is provided with a cover configured to detachably engage with the tank to close an opening to an interior of the tank.

[0017] In the motor cooling system according to the present application, optionally, the tank is arranged above the motor and is configured to be recessed toward an interior space of the housing, and the cover is provided with a rigid reinforcing structure configured to be recessed toward the interior space of the tank.

[0018] In the motor cooling system according to the present application, optionally, the first orifice, the second orifice, the first flow channel and / or the second flow channel are configured according to the temperature distribution state of the motor in the application scenario to facilitate the temperature reduction of the target position, and / or the first orifice and the second orifice are arranged on opposite sides of the bottom of the box along the axial direction of the motor, and / or the target position includes at least one of the stator core, the rotor core, the outer surface of the stator winding, the inner surface of the stator winding and the bearing for supporting the motor shaft of the motor.

[0019] In the motor cooling system according to the present application, optionally, the first flow channel and the second flow channel are arranged on opposite sides of the box relative to the axis of the motor, and / or a sealing element is arranged between the first port and the first orifice, and / or a sealing element is arranged between the third port and the second orifice, and / or the accommodation portion is arranged at the bottom of the housing, and / or the first cooling medium and the second cooling medium respectively include oil and water.

[0020] Secondly, according to another aspect of the present application, a motor is also provided, which is configured with the motor cooling system as described in any one of the above.

[0021] In addition, according to still another aspect of the present application, a vehicle is further provided, which includes the motor as described above.

[0022] The present motor cooling system can achieve more sufficient and efficient motor cooling and temperature reduction effect, timely remove the heat inside the motor, effectively reduce the temperature of the motor stator, rotor, stator winding, shaft and bearing and other components, thereby facilitating the long-term stable operation of the motor, slowing down the aging of the components, prolonging the service life, and reducing or avoiding the risk of equipment failure due to poor cooling. The present application has strong practicability and can be widely applied to various motor equipment. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a partial perspective structural schematic view of a motor embodiment according to the present application.

[0024] Figure 2 is Figure 1 is another partial perspective structural schematic view of the motor embodiment shown in

[0025] Figure 3 is Figure 1 is a lateral sectional structural schematic view of the motor embodiment shown in

[0026] Figure 4 is Figure 1The three-dimensional structural schematic diagram of the motor stator, the stator winding, the rotating shaft and other components in the shown motor embodiment. DETAILED DESCRIPTION

[0027] First of all, it needs to be explained that the constitution, features and advantages of the motor cooling system, the motor and the vehicle according to the present application will be described in an exemplary manner below, however, all the descriptions shall not be used to form any limitation on the present application. In this text, the technical terms "first", "second", "third" and "fourth" are only for the purpose of distinguishing expression and are not intended to represent their order and relative importance, and the technical term "connection" contains the connection in a direct or indirect manner.

[0028] In addition, for any single technical feature described or implied in the embodiments mentioned in this text, or any single technical feature shown or implied in the drawings, the present application still allows any combination or deletion between these technical features (or their equivalents) to continue without any technical obstacles, so it should be considered that more embodiments according to the present application are also within the scope of this disclosure. For the purpose of simplifying the drawings, the same or similar components and features may be marked only at one or several places in the same drawing.

[0029] Reference Figures 1 to 4 The motor embodiment according to the present application is exemplarily shown by these drawings, in which a motor cooling system embodiment according to the present application is configured to cool the motor, and the technical solutions of the present application will be described in detail below in combination with these shown embodiments.

[0030] First of all, as shown in Figure 1 , Figure 2 and Figure 3 , in this given specific example, the motor 100 has a housing 110, and inside the housing 110, there are arranged components such as the stator core 120, the rotor core 130, the stator winding 140, the bearing 150 for supporting the motor rotating shaft 160, etc. It can be understood that since the components of such a motor are well known to those skilled in the art, and they can be configured according to different application requirements, such as adding or reducing one or more components, etc., therefore, the present application does not make any limitation and excessive description on the structure of the motor itself.

[0031] The motor 100 is equipped with a motor cooling system to treat components located inside the housing 110 that require cooling (e.g., components that generate a lot of heat, components where heat accumulates, etc.). This motor cooling system can quickly remove the heat generated during motor operation. As an example, in the illustrated embodiment of the motor cooling system, it may include a housing 10, a first flow channel 20, a second flow channel 30, a pump device 40, a cooler 50, and a filter 60.

[0032] The housing 10 is a container for holding a cooling medium, which can typically be, for example, oil or one or more other suitable media. By means of the flow of the cooling medium in the motor cooling system, it can fully absorb and carry away the heat of the components inside the motor housing when in contact with them, thereby achieving the purpose of cooling down the components that need to dissipate heat.

[0033] The housing 10 can be made separately from a suitable material, such as metal (e.g., aluminum, aluminum alloy, copper, etc.), and then mounted onto the shell 110 using any feasible method, such as connectors (e.g., bolts, screws, etc.) or welding. In one or more embodiments, the housing 10 and the shell 110 can be integrally formed using processes such as casting or machining, which is advantageous for simplifying production steps, improving device compactness, and enhancing sealing performance.

[0034] The housing 10 can be constructed in various possible shapes, sizes, volumes, and arrangements as needed. For example, the housing 10 can be optionally positioned above the motor 100, such as directly above the motor shaft 160, and configured to form a recessed structure facing the interior space of the housing 110. This facilitates full utilization of the motor's internal space and creates a compact overall structure. A cover 14 can be optionally provided on the housing 10 to close the opening 13 leading to the interior of the housing 10. The cover 14 can be detachably attached to or removed from the housing 10 using connectors 70 (such as screws) to allow for possible operations such as adding or replacing the cooling medium or cleaning the housing 10 when needed. Alternatively, the cover 14 can be configured to form a recessed structure 15 facing the interior space of the housing 10. This strengthens the rigidity of the cover and also promotes a compact layout.

[0035] like Figure 2 As shown, a first orifice 11 and a second orifice 12 can be provided inside the housing 10, which are respectively used in conjunction with the corresponding ports of the first flow channel 20 and the second flow channel 30 located on the housing 110. The cooling medium will flow from the first orifice 11 into the first flow channel 20, and after flowing through the motor cooling system, it will return to the housing 10 via the second flow channel 30 and the second orifice 12, thereby completing the closed-loop circulation of the cooling medium.

[0036] Specifically, the first flow channel 20 can be designed and constructed at any suitable position on the housing 110 according to actual application needs, and the first flow channel 20 can have a first port 21 and a second port 22, wherein the first port 21 is arranged in correspondence with the first aperture 11 of the box 10 to enable the cooling medium contained in the box 10 to flow through the first aperture 11 and the first port 21 in turn under the action of gravity and then flow out of the second port 22 of the first flow channel 20. In order to achieve the desired cooling of the components at the target position inside the motor housing, the second port 22 can be arranged near the target position. In this way, when the cooling medium flows out of the second port 22 and flows to the above-mentioned target position, the components at the position can be cooled and heat can be removed, achieving a good effect of sufficient heat dissipation and cooling. It should be noted that the target position can include but is not limited to one or more of, for example, the stator core 120, the rotor core 130, the outer surface of the stator winding 140, the inner surface of the stator winding 140, and the bearings 150 arranged on the drive side or non-drive side of the motor.

[0037] The above situation has been exemplarily illustrated in Figure 3 and Figure 4 , for example, in Figure 4 , the cooling medium flowing out of the second port 22 is shown in a schematic manner flowing to the target position of the motor 100, such as the stator 120 and the stator winding 140, in the direction indicated by the arrow A in the figure, and then can continue to flow in the direction indicated by the dashed arrow in the figure, achieving almost full contact of the cooling medium with the inner and outer surfaces of the stator 120 and the stator winding 140 and other components, and the cooling medium can also continue to flow in the direction indicated by the dashed arrow in, for example, Figure 3 , to the motor shaft 160 and other positions, so that more heat inside the motor can be removed more effectively, thus successfully solving the problem that in existing motor cooling solutions such as traditional water cooling, only the heat on the surface of the motor can be removed, and the heat accumulated in some local corner positions cannot be removed, which easily leads to aging and performance degradation of components, and even work failure. Compared with the prior art, the motor cooling system can significantly reduce the temperature inside the motor, which is very beneficial to alleviate the high temperature aging of motor components, ensure the working performance of the motor, and reduce the risk of equipment failure.

[0038] In this embodiment of the motor cooling system, the second flow channel 30 can be configured at any suitable location on the housing 110 according to the actual application requirements, and the second flow channel 30 can have a third port 31 and a fourth port (not shown), wherein the third port 31 is arranged to communicate with the second aperture 12 of the box 10, and the fourth port is arranged to communicate with a containing portion located in the housing 110. As previously described, the cooling medium flowing through the first flow channel 20 will flow out from the second port 22 and, after reaching the target location, it will cool the components located at the location which are expected to be cooled, and then the cooling medium can continue to flow to the containing portion under the action of gravity, which can be arranged at the bottom of the housing 110, or can also be arranged at other suitable locations such as the side wall of the housing according to requirements. As an example, the containing portion can be optionally configured as a containing cavity shape protruding or recessed relative to the inner wall of the housing for collecting the cooling medium. The pump device 40 can be used to suck the cooling medium that has reached the containing portion into the second flow channel 30 from the fourth port of the second flow channel 30, and then pump the cooling medium back to the box 10 through the second aperture 12 connected to the third port 31 for continued use, thereby forming a closed loop circuit of the cooling medium. When the application requires, the pump device 40 can be started to make the cooling medium continuously circulate in the system, so that the motor can be continuously cooled.

[0039] The pump device 40 can be configured using any applicable device according to the requirements of the motor application, which is not limited and discussed in this application. The pump device 40 can be arranged on the outer wall of the housing 110 at any suitable location by means such as connecting members 80 (such as bolts, etc.), for example, the pump device 40 can be arranged at a lower position of the housing 110 relative to the box 10, which is beneficial to optimize and prolong the flow path of the cooling medium in the motor, and fully utilize the heat exchange cooling performance of the cooling medium.

[0040] Referring to Figure 1 and Figure 2 The cooler 50 can be optionally arranged between the box 10 and the pump device 40 to cool the cooling medium, and the filter 60 can be arranged near the pump device 40 to filter the cooling medium, for example, to filter the cooling medium when it flows through the first flow channel 20 and / or the second flow channel 30, so as to remove impurities such as particles that can be mixed in the current cooling medium in the flow path.

[0041] For the cooler 50, since the cooling medium will absorb a large amount of heat when exchanging heat with the internal components of the motor, the temperature of the cooling medium itself can be significantly increased, which is not conducive to the subsequent reuse of the cooling medium. Therefore, the cooler 50 can be used to reduce the temperature of the cooling medium. It should be understood that the present application allows the cooler 50 to be used in many ways, for example, it can use a metal fin array with good heat dissipation to exchange heat with the cooling medium. As an alternative, for example, in Figure 1 In the embodiments given, the cooler 50 can be provided with an input port 51 and an output port 52, and by using another cooling medium such as water to flow into the cooler 50 from the input port 51 and flow out of the cooler 50 from the output port 52, heat exchange with the cooling medium in the motor cooling system can be achieved during the above circulation of the cooling medium, for example, with the cooling medium flowing through the second flow channel 30, so as to achieve the purpose of cooling the latter.

[0042] For the filter 60, it can be mounted to the outer wall of the housing 110 by any feasible means such as a connector. As an example, the cooler 50, the filter 60 and the pump device 40 can be optionally arranged on the same side relative to the axis of the motor 100, which is schematically shown in Figure 1 and Figure 2 . It should also be noted that in this application, no specific model of the filter 60 is limited, and any applicable device can be used according to the requirements of the motor application.

[0043] As mentioned earlier, although it is advantageous to arrange the cooler 50 and the filter 60 in the motor cooling system, in one or some applications, it is possible not to set one or both of them according to the actual application needs.

[0044] It should be noted that, in order to facilitate the realization of better cooling effect, the box 10, the first flow channel 20, the second flow channel 30, etc. can be optimized. For example, the orifices and / or ports mentioned in this article can be configured according to the temperature distribution of the motor in different application scenarios (for example, the thermal distribution map of the motor can be obtained by computer simulation software, or the temperature data at the corresponding position in the motor can be obtained by temperature sensor, etc. Different motor products may differ due to different configurations (such as power, size, etc.)), so as to achieve more optimized cooling effect at the target position in the actual application scenario, such as designing or adjusting the shape, size, number of configurations, arrangement position of the above orifices and / or ports, designing or adjusting the shape, size, number of configurations, arrangement position of the first flow channel and / or the second flow channel. For example, the first orifice and the second orifice can be arranged on the opposite sides of the bottom of the box along the axial direction of the motor, so as to facilitate the balanced flow of the cooling medium in and out of the box. For example, when a plurality of first orifices (or second orifices, first flow channels, second flow channels) are provided, they can have the same size or different sizes, for example, the orifices (or flow channel diameters) corresponding to the positions with relatively more heat inside the shell can be configured to have relatively larger sizes, so as to output relatively more flow of cooling medium to increase the heat treatment capacity. For example, the first flow channel and the second flow channel can be arranged on opposite sides of the box relative to the axis of the motor, which is also conducive to promoting the uniform flow of the cooling medium in the system, so that the motor shell can maintain balanced stress.

[0045] In addition, in one or some embodiments, a sealing member (such as a rubber sealing ring, etc.) can be provided between the corresponding matched orifices and ports, such as one or more sealing members between the first orifice 11 and the first port 21, and one or more sealing members between the second orifice 12 and the third port 31, so as to achieve better sealing effect and avoid leakage of the cooling medium at the above joint positions during flow.

[0046] The application further provides a vehicle, in which the motor provided according to the application can be configured to provide power for the vehicle. Since the motor cooling system using the motor cooling system of the application is used for motor cooling treatment in the motor, the motor can work stably and reliably for a long time, and the risk of abnormal operation or failure of the equipment due to poor heat dissipation is reduced or avoided. It should be noted that the vehicle according to the application can include but is not limited to many types such as pure electric vehicles, hybrid vehicles, etc.

[0047] The motor cooling system, the motor and the vehicle according to the present application are only illustrated in detail by way of example, and the examples are only used to illustrate the principles of the present application and the implementation manners thereof, and are not intended to limit the present application. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and scope of the present application. Therefore, all equivalent technical solutions shall belong to the scope of the present application and be limited by the claims of the present application.

Claims

1. A motor cooling system, characterized in that, include: A housing (10), which is connected to the housing (110) of the motor (100) for containing a first cooling medium, the housing (10) having a first opening (11) and a second opening (12); A first flow channel (20) is constructed on the housing (110) and has a first port (21) and a second port (22). The first port (21) communicates with the first orifice (11) so that a first cooling medium in the housing (10) can flow into the first flow channel (20) through the first orifice (11) and the first port (21). The second port (22) is arranged adjacent to a target position in the housing (110) so that the first cooling medium flowing into the first flow channel (20) can flow out from the second port (22) and flow to the target position. The second flow channel (30) is constructed on the housing (110) and has a third port (31) and a fourth port. The third port (31) communicates with the second orifice (12), and the fourth port communicates with the receiving portion inside the housing (110). The first cooling medium flows through the target position and reaches the receiving portion. as well as A pump device (40) is arranged on the outer wall of the housing (110) and configured to pump the first cooling medium arriving at the accommodating part back to the housing (10) via the second flow channel (30) and the second orifice (12).

2. The motor cooling system according to claim 1, wherein, The motor cooling system also includes: A cooler (50) is disposed on the outer wall of the housing (110) and configured to cool the first cooling medium; and / or A filter (60) is disposed on the outer wall of the housing (110) and configured to filter the first cooling medium flowing through the first flow channel (20) and / or the second flow channel (30).

3. The motor cooling system according to claim 2, wherein, The cooler (50) is configured to exchange heat with a first cooling medium flowing through the second flow channel (30). The cooler (50) has an inlet port (51) and an outlet port (52). The second cooling medium exchanges heat with the first cooling medium during the flow from the inlet port (51) into the cooler (50) and out of the outlet port (52); and / or The housing (10) is located above the housing (110) relative to the pump device (40), the cooler (50) is arranged between the housing (10) and the pump device (40), and the filter (60) is arranged adjacent to the pump device (40).

4. The motor cooling system according to claim 3, wherein, The cooler (50), the filter (60), and the pump assembly (40) are arranged on the same side relative to the axis of the motor (100).

5. The motor cooling system according to claim 1, wherein, The housing (10) is integrally formed with the shell (110) and is provided with a cover (14), which is configured to be detachably engaged with the housing (10) to close the opening (13) leading to the interior of the housing (10).

6. The motor cooling system according to claim 5, wherein, The housing (10) is arranged above the motor (100) and is configured to be recessed toward the interior space of the housing (110). The cover (14) is provided with a rigid reinforcement structure, which is configured to be recessed toward the interior space of the housing (10).

7. The motor cooling system according to claim 1, wherein, The first orifice (11), the second orifice (12), the first flow channel (20) and / or the second flow channel (30) are configured according to the temperature distribution of the motor (100) in the application scenario to promote the cooling of the target position, and / or the first orifice (11) and the second orifice (12) are respectively arranged on opposite sides of the bottom of the housing (10) along the axial direction of the motor (100), and / or the target position includes at least one of the stator core (120), rotor core (130), outer surface of stator winding (140), inner surface of stator winding (140) and bearing (150) for supporting the shaft of the motor (100).

8. The motor cooling system according to any one of claims 1-7, wherein, The first flow channel (20) and the second flow channel (30) are arranged on opposite sides of the housing (10) relative to the axis of the motor (100), and / or a seal is provided between the first port (21) and the first orifice (11), and / or a seal is provided between the third port (31) and the second orifice (12), and / or the receiving portion is provided at the bottom of the housing (110), and / or the first cooling medium and the second cooling medium respectively include oil and water.

9. An electric motor (100), characterized in that, The motor (100) is equipped with a motor cooling system as described in any one of claims 1-8.

10. A vehicle, characterized in that, The vehicle includes the motor (100) as described in claim 9.

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