Motor waterway cooling structure and motor assembly

Abstract

The utility model relates to a motor waterway cooling structure and a motor assembly, the motor waterway cooling structure comprises an outer shell and an inner shell, the inner shell is arranged in the outer shell, the inner shell is used for accommodating a motor, cooling water channels are formed between the inner shell and the outer shell, the cooling water channels are arranged in multiple layers along the radial direction of the inner shell, and the cooling water channels are arranged in multiple layers along the radial direction of the inner shell. Each layer of cooling water channel is arranged in a surrounding mode in the circumferential direction of the inner shell, and every two adjacent layers of cooling water channels are communicated. Each layer of cooling water channel comprises a plurality of first cooling water channels arranged in the circumferential direction of the inner shell at intervals, the first cooling water channels extend in the axial direction of the inner shell, and every two adjacent first cooling water channels communicate with each other. According to the motor waterway cooling structure, the heat dissipation efficiency can be greatly improved, the heat dissipation effect is ensured, the motor can work normally, and the service life of the motor is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of new energy power motor cooling, and in particular to a motor water circuit cooling structure and a motor assembly. Background Art

[0002] With the rapid development of new energy vehicles around the world, the demand for torque of drive motors has gradually increased. Under the premise of limited vehicle space, in order to reduce the stator loss and winding loss caused by motor overheating, the cooling of the motor is particularly important in high-power, high-torque drive motors. Water cooling is widely used in the field of motor cooling technology due to its good heat exchange effect.

[0003] At present, the motor assembly includes an outer shell, an inner shell, and a motor disposed in the inner shell. A cooling water channel is formed between the outer shell and the inner shell to dissipate heat from the motor. At present, most cooling water channels are arranged in a single axial extension or circumferentially, which results in a small contact area between the cooling water channel and the motor, and thus poor heat dissipation efficiency. Utility Model Content

[0004] Based on this, it is necessary to provide a motor water channel cooling structure and a motor assembly to address the problem that a single axial or radially arranged cooling water channel leads to low cooling efficiency and affects the service life of the motor.

[0005] In a first aspect, an embodiment of the present application provides a motor water circuit cooling structure, the motor water circuit cooling structure comprising: an outer shell and an inner shell,

[0006] The inner shell is arranged in the outer shell, the inner shell is used to accommodate the motor, a cooling water channel is formed between the inner shell and the outer shell, the cooling water channel is arranged in multiple layers along the radial direction of the inner shell, each layer of the cooling water channel is arranged around the circumference of the inner shell, and the cooling water channels of two adjacent layers are connected;

[0007] Each layer of the cooling water channels includes a plurality of first cooling water channels spaced apart along the circumferential direction of the inner shell, the first cooling water channels extend along the axial direction of the inner shell, and two adjacent first cooling water channels are connected.

[0008] In one of the embodiments, the outer shell has at least two motor cavities; at least two inner shells are fixed in the at least two motor cavities in a one-to-one correspondence, and the cooling water channel is formed between each inner shell and the outer shell.

[0009] In one embodiment, the cooling water channel also includes multiple second cooling water channels, each of the first cooling water channels has a first end and a second end along the axial direction of the inner shell; for the same first cooling water channel, the first end of the first cooling water channel is connected to the first end of an adjacent first cooling water channel through one second cooling water channel, and the second end of the first cooling water channel is connected to the second end of another adjacent first cooling water channel through another second cooling water channel.

[0010] In one embodiment, a first water inlet communicating with one end of the cooling water channel is formed on the top of the outer shell, and a first water outlet communicating with the other end of the cooling water channel is formed on the bottom of the outer shell;

[0011] The cooling water channel further includes a third cooling water channel, which extends along the circumference of the inner shell. One end of the third cooling water channel is communicated with the first water inlet, and the other end of the third cooling water channel is communicated with the first cooling water channel.

[0012] In one of the embodiments, the motor water channel cooling structure further includes a radiator, a water outlet of the cooling water channel is connected to a water inlet of the radiator, and a water outlet of the radiator is connected to the first water outlet.

[0013] In one of the embodiments, the motor water cooling structure further includes a recovery water channel, the recovery water channel is disposed in the outer shell, and one end of the recovery water channel is connected to the water outlets of the plurality of cooling water channels.

[0014] In one embodiment, the recovery water circuit includes a first recovery section and a second recovery section, the first recovery section is connected to the plurality of first water outlets, one end of the second recovery section is connected to the first recovery section, and the other end is connected to the water inlet of the radiator.

[0015] In one of the embodiments, a water outlet is provided on the outer shell, and the recovery water circuit further includes a third recovery section, one end of the third recovery section is connected to the water outlet of the radiator, and the other end is connected to the water outlet.

[0016] In one of the embodiments, the motor water circuit cooling structure also includes a water inlet nozzle, which includes a water inlet and at least two water outlets, and the at least two water outlets are respectively connected to the water inlets of at least two of the inner shells in a one-to-one correspondence, and the water outlet flow rates of at least two of the water outlets are the same.

[0017] In a second aspect, an embodiment of the present application also provides a motor assembly, including the above-mentioned motor water circuit cooling structure and a motor.

[0018] Beneficial effects:

[0019] The embodiment of the present application provides a motor water path cooling structure and a motor assembly, including an outer shell and an inner shell, a cooling water channel is formed between the outer shell and the inner shell, and the cooling water channel is arranged in multiple layers along the radial direction of the inner shell, each layer of cooling water channel is arranged around the circumference of the inner shell, and two adjacent layers of cooling water channels are connected. Each layer of cooling water channels includes a plurality of first cooling water channels arranged at intervals along the circumference of the inner shell, the first cooling water channels extend along the axial direction of the inner shell, and two adjacent first cooling water channels are connected, so that the cooling water channels are arranged crosswise along the axial and radial directions of the inner shell, thereby greatly improving the contact area between the cooling water channels and the motor, and then greatly improving the heat dissipation efficiency, ensuring the heat dissipation effect, allowing the motor to work normally, and extending the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a motor water circuit cooling structure provided in some embodiments of the present application.

[0021] Figure 2 for Figure 1 Schematic diagram of the motor water cooling structure without the inner shell and water inlet nozzle installed.

[0022] Figure 3 A top view of an inner shell provided for some embodiments of the present application.

[0023] Figure 4 for Figure 3 A bottom view of the inner housing is shown.

[0024] Figure 5 for Figure 1 Side view of the motor water cooling structure.

[0025] Figure 6 for Figure 5 Cross-sectional view at AA in the middle.

[0026] Figure 7 for Figure 1 Front view of the motor water cooling structure.

[0027] Figure 8 for Figure 7 Cross-sectional view at the middle BB.

[0028] Fig. 9 for Figure 7 Cross-sectional view at CC.

[0029] Reference numerals:

[0030] 1. outer shell; 11. first cavity; 12. second cavity; 13. water inlet; 14. water outlet; 15. first water inlet; 16. first water outlet;

[0031] 2. Inner shell;

[0032] 3. Cooling water channel; 31. First cooling water channel; 32. Second cooling water channel; 33. Third cooling water channel;

[0033] 4. Radiator;

[0034] 5. Recovery water channel; 51. First recovery section; 52. Second recovery section; 53. Third recovery section; 54. Waste outlet. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0036] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply 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 a limitation on the present application.

[0037] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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 the specific circumstances.

[0039] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0040] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0041] First, see Figure 1-Figure 2 An embodiment of the present application provides a motor water circuit cooling structure, which is applied to a motor assembly. The motor assembly also includes a motor. The inner housing is used to install the motor. The motor water circuit cooling structure includes an outer housing 1 and a plurality of inner housings 2, wherein the outer housing 1 has a plurality of motor cavities for installing the motors.

[0042] See also Figure 3-Figure 4 The inner shell 2 is arranged in the outer shell 1. The inner shell 2 is used to accommodate the motor. A cooling water channel 3 is formed between the inner shell 2 and the outer shell 1. The cooling water channel 3 is arranged in multiple layers along the radial direction of the inner shell 2. Each layer of the cooling water channel 3 is arranged around the circumference of the inner shell 2, and the cooling water channels 3 of two adjacent layers are connected; each layer of the cooling water channel 3 includes a plurality of first cooling water channels 31 arranged at intervals along the circumference of the inner shell 2. The first cooling water channels 31 extend along the axial direction of the inner shell 2, and two adjacent first cooling water channels 31 are connected.

[0043] A motor water channel cooling structure provided in an embodiment of the present application is provided by arranging multiple layers of cooling water channels 3 radially surrounding the inner shell 2 between the outer shell 1 and the inner shell 2, and arranging a first cooling water channel 31 axially surrounding the inner shell 2 in each layer of cooling water channels 3, so that the cooling water channels 3 are arranged crosswise along the axial and radial directions of the inner shell 2, thereby greatly improving the contact area between the cooling water channels 3 and the motor, thereby greatly improving the heat dissipation efficiency, ensuring the heat dissipation effect, enabling the motor to work normally, and extending the service life of the motor.

[0044] See also Figure 1-Figure 2 In some embodiments, the outer shell 1 has at least two motor cavities; at least two inner shells 2 are fixed in the at least two motor cavities in a one-to-one correspondence, and a cooling water channel 3 is formed between each inner shell 2 and the outer shell 1.

[0045] The outer shell 1 can be provided with a corresponding number of motor cavities according to the number of motors installed in the motor assembly, and an inner shell 2 is fixed in each motor cavity, and a cooling water channel 3 is formed between each inner shell 2 and the outer shell 1, so as to realize cooling of the motor.

[0046] In the embodiment of the present application, the outer shell 1 is provided with a first cavity 11 and a second cavity 12 , and the two inner shells 2 are fixedly disposed in the first cavity 11 and the second cavity 12 , respectively.

[0047] like Figure 2-Figure 4 As shown, in some embodiments, the cooling water channel 3 also includes multiple second cooling water channels 32, and each first cooling water channel 31 has a first end and a second end along the axial direction of the inner shell 2; for the same first cooling water channel 31, the first end of the first cooling water channel 31 is connected to the first end of an adjacent first cooling water channel 31 through a second cooling water channel 32, and the second end of the first cooling water channel 31 is connected to the second end of another adjacent first cooling water channel 31 through another second cooling water channel 32.

[0048] By arranging the second cooling water channel 32 along the circumference of the inner shell 2, on the one hand, the adjacent multiple first cooling water channels 31 can be connected in series through the second cooling water channel 32, so that the water supply of each water channel is uniform, thereby making the heat dissipation more uniform. On the other hand, by arranging the second cooling water channel 32 along the circumference, the contact area between the cooling water channel 3 and the motor can be greatly increased, thereby greatly increasing the heat dissipation area and further improving the heat dissipation effect.

[0049] In addition, the first end of the first cooling water channel 31 is connected to the first end of an adjacent first cooling water channel 31 through a second cooling water channel 32, and the second end of the first cooling water channel 31 is connected to the second end of another adjacent first cooling water channel 31 through another second cooling water channel 32, and the cycle is continued until it is arranged around the circumference of the inner shell 2. This can greatly increase the contact area between the cooling water channel 3 on the inner shell 2 and the motor inside it, thereby greatly improving the heat dissipation efficiency, ensuring the heat dissipation effect, allowing the motor to work normally, and extending the service life of the motor.

[0050] like Figure 2-Figure 4 As shown, in some embodiments, a first water inlet 15 communicating with one end of the cooling water channel 3 is formed at the top of the outer shell 1, and a first water outlet 16 communicating with the other end of the cooling water channel 3 is formed at the bottom of the outer shell 2;

[0051] The cooling water channel 3 further includes a third cooling water channel 33 , which extends along the circumference of the inner shell 2 . One end of the third cooling water channel 33 is connected to the first water inlet 15 , and the other end is connected to the first cooling water channel 31 .

[0052] The third cooling water channel 33 is provided to connect the cooling water channel 3 with the first water inlet, so that cooling water can enter the cooling water channel 3 accurately and in a precise amount to dissipate heat for the motor.

[0053] Optionally, in some embodiments, the cooling water channel 3 further includes a fourth cooling water channel, and the fourth cooling water channel is used to connect two adjacent layers of cooling water channels 3 .

[0054] like Figure 5 and Figure 8 As shown, in some embodiments, the motor water channel cooling structure also includes a radiator 4 , the water outlet of the cooling water channel 3 is connected to the water inlet of the radiator 4 , and the water outlet of the radiator 4 is connected to the first water outlet 16 .

[0055] In the embodiment of the present application, a fixing groove is provided on the outer shell 1, and the radiator 4 is fixed in the fixing groove. By providing the fixing groove on the outer shell 1, the radiator 4 can be quickly installed and removed, which can greatly improve the installation efficiency of the motor water circuit cooling structure, and when the radiator 4 fails, it can be easily repaired and quickly disassembled and repaired, which greatly improves the repair efficiency.

[0056] In the embodiment of the present application, the heat sink 4 is fixed in the fixing groove by a fixing method of a clamping protrusion and a clamping groove, and one of the heat sink 4 and the fixing groove is provided with a clamping protrusion, and the other of the heat sink 4 and the fixing groove is provided with a clamping groove. The fixing method of the clamping protrusion and the clamping groove can not only realize the stable fixation of the heat sink in the fixing groove, but also realize the rapid installation and removal of the heat sink 4 relative to the fixing groove.

[0057] like Figure 6 , Figure 8 and Fig. 9 As shown, in some embodiments, the motor water cooling structure also includes a recovery water channel 5, which is arranged in the outer shell 1, and one end of the recovery water channel 5 is connected to the water outlets of multiple cooling water channels 3, and the recovery water channel 5 is used to recycle cooling water.

[0058] By setting the recycling water channel 5 in the outer shell 1, the cooling water can be collected centrally, avoiding the waste of cooling water and reducing the overall cost. In addition, collecting the cooling water in the same position can make the collection process more convenient. Only the recycling part needs to be set at one position to complete the collection of cooling water, thereby greatly improving the collection efficiency and saving working time.

[0059] like Figure 6 , Figure 8 and Fig. 9 As shown, in some embodiments, the recovery water circuit 5 includes a first recovery section 51 and a second recovery section 52, the first recovery section 51 is connected to multiple first water outlets 16, one end of the second recovery section 52 is connected to the first recovery section 51, and the other end is connected to the water inlet of the radiator 4.

[0060] By setting a first recovery section 51 at the water outlets of multiple cooling water channels 3, the cooling water flowing out of multiple first water outlets 16 can be gathered into the first recovery section 51, and the cooling water is collected uniformly, so that it flows into the radiator 4 through the second recovery section 52 connected to the first recovery section 51 for heat dissipation.

[0061] like Figure 6 , Figure 8 and Fig. 9 As shown, in some embodiments, a water outlet 14 is provided on the outer shell 1, and the recovery water circuit 5 also includes a third recovery section 53, one end of the third recovery section 53 is connected to the water outlet of the radiator 4, and the other end is connected to the water outlet 14.

[0062] The third recovery section 53 is provided so that the cooling water after the heat is dissipated by the radiator 4 can flow to the water outlet 14 , and the cooling water is collected through the water outlet 14 .

[0063] like Figure 6 , Figure 8 and Fig. 9 As shown, in some embodiments, a waste outlet 54 is provided on the third recovery section 53 , and a sealing plug is provided on the waste outlet 54 .

[0064] By setting the waste outlet 54, the waste cooling water can be discharged, so as to avoid the presence of impurities in the cooling water after multiple cycles, which may block the pipe and affect the cooling effect. In addition, by setting a plug to block the waste outlet 54, the waste outlet 54 can be drained by removing the plug when it is necessary to drain the waste water, which is more convenient to operate.

[0065] like Figure 1-Figure 2 As shown, in some embodiments, the motor water circuit cooling structure also includes a water inlet nozzle 13, the water inlet nozzle 13 includes a water inlet and at least two water outlets, the at least two water outlets are respectively connected to the water inlets of at least two inner shells 2 in a one-to-one correspondence, and the water output of at least two water outlets is the same.

[0066] A plurality of first water inlets 15 are provided on the outer shell. The plurality of first water inlets 15 are respectively connected to the plurality of cooling water channels 3 . The first water inlets 15 are connected to the water outlet of the water inlet nozzle 13 .

[0067] By providing the water inlet 13, the water output of the multiple water outlets can be controlled, so that the amount of cooling water flowing into different cooling water channels 3 is the same, thereby ensuring the same cooling effect on different motors. Of course, in other embodiments, it is also possible to provide an adjustment member on the multiple water outlets, and adjust the water output of the multiple water outlets through the adjustment member, so as to control the amount of cooling water entering different cooling water channels 3, and then control the cooling effect on different motors.

[0068] In a second aspect, an embodiment of the present application further provides a motor assembly, including the above-mentioned motor water circuit cooling structure, and also including a motor.

[0069] The above-mentioned motor assembly is provided with a motor water channel cooling structure outside the motor. The motor water channel cooling structure greatly increases the contact area between the cooling water channel 3 and the motor by cross-arranging the cooling water channel 3 along the axial and radial directions of the inner shell 2, thereby greatly improving the heat dissipation efficiency, ensuring the heat dissipation effect, enabling the motor to work normally, and extending the service life of the motor.

[0070] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. The motor water cooling structure is characterized by: The motor water circuit cooling structure comprises: an outer shell and an inner shell, The inner shell is arranged in the outer shell, the inner shell is used to accommodate the motor, a cooling water channel is formed between the inner shell and the outer shell, the cooling water channel is arranged in multiple layers along the radial direction of the inner shell, each layer of the cooling water channel is arranged around the circumference of the inner shell, and the cooling water channels of two adjacent layers are connected; Each layer of the cooling water channels includes a plurality of first cooling water channels spaced apart along the circumferential direction of the inner shell, the first cooling water channels extend along the axial direction of the inner shell, and two adjacent first cooling water channels are connected.

2. The motor water cooling structure according to claim 1, characterized in that: The outer shell has at least two motor cavities; at least two inner shells are fixed in the at least two motor cavities in a one-to-one correspondence, and the cooling water channel is formed between each inner shell and the outer shell.

3. The motor water cooling structure according to claim 1, characterized in that: The cooling water channel also includes multiple second cooling water channels, each of the first cooling water channels has a first end and a second end along the axial direction of the inner shell; for the same first cooling water channel, the first end of the first cooling water channel is connected to the first end of an adjacent first cooling water channel through a second cooling water channel, and the second end of the first cooling water channel is connected to the second end of another adjacent first cooling water channel through another second cooling water channel.

4. The motor water cooling structure according to claim 1, characterized in that: The top of the outer shell is provided with a first water inlet connected to one end of the cooling water channel, and the bottom of the outer shell is provided with a first water outlet connected to the other end of the cooling water channel; The cooling water channel further includes a third cooling water channel, which extends along the circumference of the inner shell. One end of the third cooling water channel is communicated with the first water inlet, and the other end of the third cooling water channel is communicated with the first cooling water channel.

5. The motor water cooling structure according to claim 4, characterized in that: The motor water channel cooling structure also includes a radiator, the water outlet of the cooling water channel is communicated with the water inlet of the radiator, and the water outlet of the radiator is communicated with the first water outlet.

6. The motor water cooling structure according to claim 5, characterized in that: The motor water channel cooling structure further comprises a recovery water channel, which is arranged in the outer shell, and one end of the recovery water channel is connected to the water outlets of the plurality of cooling water channels.

7. The motor water cooling structure according to claim 6, characterized in that: The recovery water circuit includes a first recovery section and a second recovery section, the first recovery section is connected to the first water outlets, one end of the second recovery section is connected to the first recovery section, and the other end is connected to the water inlet of the radiator.

8. The motor water cooling structure according to claim 7, characterized in that: The outer shell is provided with a water outlet nozzle, and the recovery water path further comprises a third recovery section, one end of the third recovery section is communicated with the water outlet of the radiator, and the other end is communicated with the water outlet nozzle.

9. The motor water cooling structure according to claim 2, characterized in that: The motor water circuit cooling structure also includes a water inlet nozzle, which includes a water inlet and at least two water outlets. The at least two water outlets are respectively connected to the water inlets of at least two of the inner shells in a one-to-one correspondence, and the water outlet flow rates of at least two of the water outlets are the same.

10. The motor assembly is characterized in that: It comprises the motor water circuit cooling structure as described in any one of claims 1 to 9, and also comprises a motor.

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