CN213879490U - End cover for liquid cooling motor and liquid cooling motor - Google Patents

Abstract

The disclosure provides an end cover for a liquid cooling motor and the liquid cooling motor, which comprises a bearing end cover and a sealing cover; the first side of the bearing end cover is connected with a bearing of the liquid cooling motor, the second side of the bearing end cover is provided with a concave part, the sealing cover is used for sealing the concave part, and the sealing cover is provided with a cooling liquid inlet and a cooling liquid outlet which are communicated with the concave part. This is disclosed and is transmitted the coolant liquid to the concave part through the coolant liquid import on the sealed lid, and the heat that the coolant liquid absorbed on the bearing end cover changes into high temperature liquid to discharge the high temperature liquid in the concave part through the coolant liquid export on the sealed lid, so that the high temperature liquid takes the heat on the bearing end cover out of the concave part, and then realizes carrying out effective radiating purpose for the bearing, prolongs the life of bearing.

Description

End cover for liquid cooling motor and liquid cooling motor

Technical Field

The disclosure relates to the technical field of general machinery, in particular to an end cover for a liquid cooling motor and the liquid cooling motor.

Background

The liquid cooling technique is a heat dissipation and cooling technique that takes away most heat through the liquid circulation medium, and on considering that the rotor can transmit a large amount of heat to the bearing when the motor is in operation, the bearing can greatly reduce its life-span if long-time operation under high temperature, consequently, can be for the better heat dissipation of motor on applying the motor with the liquid cooling technique.

The liquid cooling technique of liquid cooling motor among the prior art can only cool down the winding of motor, and the bearing is installed on the motor end cover, does not lead to unable realization to carry out effectual cooling to the bearing with coolant liquid direct contact, and the bearing only relies on the end cover to dispel the heat with the natural flow of quick-witted incasement air or installs cooling fan additional in the motor rear end, and the cooling effect is poor, can't realize effectively dispelling the heat. If the cooling liquid directly contacts the bearing to dissipate heat, the internal structure of the motor needs to be redesigned, and the cost is high.

Disclosure of Invention

In view of this, the embodiment of the present disclosure provides an end cover for a liquid cooling motor and a liquid cooling motor on the basis of not changing an internal structure of a motor, so as to solve the problem that a rear bearing of a liquid cooling motor in the prior art cannot effectively dissipate heat.

In one aspect, an embodiment of the present disclosure provides an end cap for a liquid-cooled motor, including a bearing end cap and a seal cap; the bearing comprises a bearing end cover, a bearing cover and a sealing cover, wherein the first side surface of the bearing end cover is connected with a bearing of a liquid cooling motor, a concave part is arranged on the second side surface of the bearing end cover, the sealing cover is used for sealing the concave part, and a cooling liquid inlet and a cooling liquid outlet which are communicated with the concave part are arranged on the sealing cover.

In some embodiments, at least one sealing groove is arranged on the inner side surface of the concave part, and a sealing element matched with the sealing groove is arranged in the sealing groove.

In some embodiments, a first spacer is disposed in the recess, and the coolant inlet and the coolant outlet are respectively communicated with spaces on both sides of the first spacer.

In some embodiments, at least one second spacer bar is further disposed in the concave portion, and the first spacer bar and the second spacer bar form a plurality of spaces in an annular distribution in the concave portion.

In some embodiments, a via hole is disposed on the second spacer bar, and the via hole enables the spaces on two sides of the second spacer bar to communicate.

In some embodiments, cooling fins are provided on the first side of the bearing end cap.

In some embodiments, the heat sink is secured to the bearing end cap by bolts.

In some embodiments, a thermally conductive material is coated between the first side and the heat sink.

In another aspect, an embodiment of the present disclosure further provides a liquid-cooled motor, which includes a motor rotor, a motor stator, and the end cover according to any of the above embodiments.

In some embodiments, the end cap is secured to the motor stator.

This is disclosed and is transmitted the coolant liquid to the recess through the coolant liquid import on the sealed lid, and the heat that the coolant liquid absorbed on the bearing end cover changes into high temperature liquid to high temperature liquid through the coolant liquid export on the sealed lid in with the recess discharges, so that the heat on the high temperature liquid with the bearing end cover takes out the recess, and then realizes carrying out effective radiating purpose for the bearing, prolongs the life of bearing.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present disclosure, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a bearing end cap and a seal cap in an end cap according to the present disclosure;

FIG. 2 is a schematic illustration of a bearing end cap in an end cap provided by the present disclosure;

FIG. 3 is a schematic view of a bearing end cap and a heat sink in an end cap according to the present disclosure;

fig. 4 is a schematic view of a liquid-cooled electric machine provided by the present disclosure at a first angle;

fig. 5 is a cross-sectional view of a liquid-cooled electric machine provided by the present disclosure.

Reference numerals:

11-bearing end cap; 12-a sealing cover; 13-a heat sink; 111-a recess; 112-a seal groove; 113-a first spacer; 114-a second spacer bar; 121-coolant inlet; 122-coolant outlet; 1141-a via.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

To maintain the following description of the embodiments of the present disclosure clear and concise, a detailed description of known functions and known components have been omitted from the present disclosure.

Fig. 1 shows an end cover for a liquid-cooled motor provided by an embodiment of the present disclosure, which includes a bearing end cover 11 and a sealing cover 12, where a first side surface of the bearing end cover 11 is connected to a bearing of the liquid-cooled motor, a concave portion 111 is disposed on a second side surface of the bearing end cover 11, and the sealing cover 12 is disposed in cooperation with the concave portion 111 to seal the concave portion 111. Specifically, at least one sealing groove 112 is provided on an inner side surface of the concave portion 111, a sealing member matching with the sealing groove 112 is provided inside the sealing groove 112, and the sealing member may be a gasket, a washer, an oil seal, or the like, and the sealing member provided in the sealing groove 112 and the sealing cover 12 cooperate to seal the concave portion 111, so that the liquid in the concave portion 111 can be prevented from flowing out through a connection between the sealing cover 12 and the concave portion 111 when the liquid exists in the concave portion 111 and pressure is applied to the sealing cover 12, and good sealing performance of the concave portion 111 is ensured.

Certainly, in order to ensure the stability of the connection between the bearing end cover 11 and the seal cover 12, a first screw hole is provided on the bearing end cover 11, a second screw hole corresponding to the first screw hole is provided on the seal cover 12, and the seal cover 12 is fixed on the bearing end cover 11 by a first bolt matched with the first screw hole and the second screw hole; here, the size and the number of the first screw hole and the second screw hole can be adjusted according to actual requirements.

The seal cover 12 is provided with a cooling liquid inlet 121 and a cooling liquid outlet 122 which are communicated with the concave portion 111, in a specific use, the cooling liquid inlet 121 is communicated with a cooling liquid outlet 122 of a cooling liquid container, the cooling liquid outlet 122 is communicated with the cooling liquid inlet 121 of the cooling liquid container, and the cooling liquid inlet 121 is used for conveying cooling liquid to the concave portion 111, so that the cooling liquid cools the bearing end cover 11, that is, the cooling liquid in the concave portion 111 absorbs heat of the bearing end cover 11, and the temperature of the cooling liquid is increased to be converted into high-temperature liquid; the cooling liquid outlet 122 is used for discharging the high-temperature liquid in the concave part 111, so that the cooling liquid container cools the high-temperature liquid again; the purpose of effectively radiating the bearing, particularly the rear bearing, can be achieved by circulating the way.

Further, fig. 2 shows a structural schematic diagram of the bearing end cover 11, and referring to fig. 1 and fig. 2, a first spacer 113 is disposed in the concave portion 111, and a height of the first spacer 113 is not higher than that of the seal groove 112, that is, a side of the first spacer 113 away from an inner side surface of the concave portion 111 contacts the seal cover 12.

Specifically, referring to fig. 1, the coolant inlet 121 and the coolant outlet 122 communicate with spaces on both sides of the first spacer 113, and a relative distance between the coolant inlet 121 and the coolant outlet 122 may be the same as a width of the spacer 113, but may be larger than the width of the spacer 113. The relative distance between the cooling liquid inlet 121 and the cooling liquid outlet 122 is the same as the width of the spacer 113, and compared with the relative distance between the cooling liquid inlet 121 and the cooling liquid outlet 122 being larger than the width of the spacer 113, the cooling liquid entering the concave portion 111 can sufficiently absorb the heat on the bearing end cover 11, so that the heat dissipation effect is better.

It should be noted that, in the embodiment of the present disclosure, at least one second spacer 114 is further disposed in the recess 111 shown in fig. 1 and fig. 2, the bearing end cover 11 can be supported and reinforced by the second spacer 114, and the first spacer 113 and the second spacer 114 divide the recess 111 into a plurality of spaces distributed annularly. The height of the second spacer 114 is also not higher than the sealing groove 112, and preferably, the height of the first spacer 113 is the same as the height of the second spacer 114.

Further, a via hole 1141 is disposed on the second spacer bar 114, the via hole 1141 enables spaces on two sides of the second spacer bar 114 to be communicated, that is, a plurality of spaces to be communicated, and the via hole 1141, the cooling liquid inlet 121, and the cooling liquid outlet 122 form a complete cooling loop. Of course, the number of the second spacer bars 114, the positions of the second spacer bars 114 in the concave portions 111, the number and the width of the via holes 1141, the positions of the second spacer bars 114, and the like can be set according to actual requirements.

With continued reference to fig. 1 and fig. 2, in order to further fix the bearing end cover 11, a third screw hole may be provided on the bearing end cover 11, and the bearing end cover 11 may be fixed on the motor stator of the liquid-cooled motor by a second bolt that is matched with the third screw hole; of course, the size and the number of the third screw holes can be adjusted according to actual requirements.

As shown in fig. 3, the end cap provided by the embodiment of the present disclosure further includes a heat sink 13 disposed on the first side of the bearing end cap 11. Wherein the cooling fins 13 and the bearing are connected to different areas of the first side surface, respectively. Further, the heat sink 13 is fixed to the bearing end cover 11 by bolts, specifically, a fourth screw hole may be provided on the heat sink 13, a fifth screw hole corresponding to the fourth screw hole is provided on the first side surface of the bearing end cover 11, and the heat sink 13 is fixed to the first side surface of the bearing end cover 11 by a third bolt engaged with the fourth screw hole and the fifth screw hole. Similarly, the size and the number of the fourth screw hole and the fifth screw hole can be adjusted according to actual requirements.

In a specific implementation, the cooling liquid entering the concave portion 111 exchanges heat with the heat dissipation fins 13 first, that is, the temperature of the heat dissipation fins 13 is reduced, and then the heat dissipation fins 13 with reduced temperature exchange heat with the bearing with higher temperature, so as to achieve the purpose of heat dissipation for the bearing. Furthermore, a heat conducting material may be disposed on the first side surface of the bearing end cap 11 and/or a side surface of the heat sink 13 contacting the first side surface of the bearing end cap 11, so as to improve a heat dissipation effect of the bearing end cap 11.

The cooling liquid is transmitted to the concave part 111 through the cooling liquid inlet 121 on the sealing cover 12, absorbs heat on the bearing end cover 11 and is converted into high-temperature liquid, and the high-temperature liquid in the concave part 111 is discharged through the cooling liquid outlet 122 on the sealing cover 12, so that the high-temperature liquid brings the heat on the bearing end cover 11 out of the concave part 111, and the purpose of effectively radiating heat for the bearing is achieved; in addition, the first spacer 113 is disposed in the concave portion 111 so that the coolant inlet 121 and the coolant outlet 122 are respectively located in the corresponding areas on the sealing cover 12 on both sides of the spacer 113, thereby ensuring that the coolant can sufficiently absorb heat on the bearing end cover 11 and improving the heat dissipation effect.

Embodiments of the present disclosure also provide a liquid-cooled motor, as shown in fig. 4, which shows a schematic view of a liquid-cooled motor at a first angle; fig. 5 shows a cross-sectional view of a liquid-cooled motor. Specifically, it includes electric motor rotor, motor stator and the aforesaid is arbitrary for the liquid cooling motor the end cover, wherein, through the third screw that sets up on the end cover and with third screw complex second bolt will bearing end cover 11 is fixed on the motor stator of liquid cooling motor, the end cover sets up electric motor rotor's tip.

Moreover, although exemplary embodiments have been described herein, the scope thereof includes any and all embodiments based on the disclosure with equivalent elements, modifications, omissions, combinations (e.g., of various embodiments across), adaptations or alterations. The elements of the claims are to be interpreted broadly based on the language employed in the claims and not limited to examples described in the present specification or during the prosecution of the application, which examples are to be construed as non-exclusive. It is intended, therefore, that the specification and examples be considered as exemplary only, with a true scope and spirit being indicated by the following claims and their full scope of equivalents.

The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more versions thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. In addition, in the foregoing detailed description, various features may be grouped together to streamline the disclosure. This should not be interpreted as an intention that a disclosed feature not claimed is essential to any claim. Rather, the subject matter of the present disclosure may lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations.

The scope of the disclosure should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The above embodiments are merely exemplary embodiments of the present disclosure, which is not intended to limit the present disclosure, and the scope of the present disclosure is defined by the claims. Various modifications and equivalents of the disclosure may occur to those skilled in the art within the spirit and scope of the disclosure, and such modifications and equivalents are considered to be within the scope of the disclosure.

Claims (10)

1. An end cover for a liquid-cooled motor is characterized by comprising a bearing end cover and a sealing cover; the bearing comprises a bearing end cover, a bearing cover and a sealing cover, wherein the first side surface of the bearing end cover is connected with a bearing of a liquid cooling motor, a concave part is arranged on the second side surface of the bearing end cover, the sealing cover is used for sealing the concave part, and a cooling liquid inlet and a cooling liquid outlet which are communicated with the concave part are arranged on the sealing cover.

2. An end cap according to claim 1, wherein at least one seal groove is provided in an inner side of the recess, a seal mating with the seal groove being provided in the seal groove.

3. An end cap according to claim 1, wherein a first spacer is provided in the recess, the coolant inlet and the coolant outlet communicating with spaces on either side of the first spacer.

4. The end cap of claim 3, wherein at least one second spacer bar is further disposed within the recess, the first and second spacer bars forming a plurality of annularly distributed spaces within the recess.

5. The end cap of claim 4, wherein the second spacer bar is provided with a via hole, and the via hole enables the spaces on two sides of the second spacer bar to communicate.

6. An end cap according to claim 1, wherein cooling fins are provided on the first side of the bearing end cap.

7. An end cap according to claim 6, wherein the heat sink is bolted to the bearing end cap.

8. The end cap of claim 6, wherein a thermally conductive material is coated between the first side and the heat sink.

9. A liquid cooled electric machine comprising a machine rotor, a machine stator and an end cap according to any one of claims 1 to 8.

10. The liquid-cooled motor of claim 9, wherein the end cap is secured to the motor stator.

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