Motor heat exchange structure and motor

Abstract

The utility model discloses a motor heat exchange structure. The heat exchange structure comprises a heat exchange hole arranged on a middle structure between a motor heating part and a cooling position, and the heat exchange hole is used for circulation of heat exchange fluid; each heat exchange hole comprises a basic contour part and a plurality of heat exchange parts which are inwards concave or outwards convex from the basic contour part, the heat exchange parts are uniformly distributed along the basic contour part, and the basic contour part is the contour part, except the heat exchange parts, of the heat exchange hole. The problems that conventional round and square heat exchange holes are adopted for heat exchange of a motor in the prior art, the heat exchange efficiency is low, the temperature distribution of the cross section of fluid flowing through the heat exchange holes is not uniform, and heat exchange is not facilitated are solved.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a motor heat exchange structure and a motor. Background Art

[0002] The motor generates heat during operation. The motor needs a good cooling method to control the temperature of the motor to ensure the stable operation of the motor. There are four main cooling methods for the motor, namely air cooling, water cooling, oil cooling and natural cooling. These cooling methods all require the use of heat exchange fluids such as air, water, and oil to bring the heat from the heating part of the motor to the cooling position to achieve the heat dissipation of the motor. These heat exchange fluids need to form a fluid passage from the heating part of the motor to the cooling position, and heat exchange holes are opened in the parts of the motor that are not conducive to fluid circulation or where the heat exchange fluid cannot circulate, to form a passage for the heat exchange fluid.

[0003] At present, the conventional heat exchange holes of motors use common polygonal heat exchange holes such as conventional circular and square ones. Such heat exchange holes have a small heat exchange area, and the temperature distribution of the cross section of the heat exchange fluid perpendicular to the flow direction is also very uneven, which greatly reduces the heat exchange effect of the heat exchange holes and increases the requirements for the minimum temperature of the cooling fluid. Therefore, in the related art, the heat exchange of motors uses conventional circular and square heat exchange holes, which have low heat exchange efficiency, and the temperature distribution of the fluid cross section of the heat exchange hole is uneven, which is not conducive to heat exchange. Utility Model Content

[0004] The main purpose of the present application is to provide a motor heat exchange structure and a motor, so as to solve the problem that the motor heat exchange in the related art adopts conventional circular and square heat exchange holes 1, the heat exchange efficiency is low, and the temperature distribution of the fluid cross section flowing through the heat exchange holes 1 is uneven, which is not conducive to heat exchange.

[0005] According to one aspect of the present application, a motor heat exchange structure is provided, comprising a heat exchange hole 1 arranged on an intermediate structure between a motor heat-generating component and a cooling position, wherein the heat exchange hole 1 is used for circulation of a heat exchange fluid; the heat exchange hole 1 comprises a basic contour portion 11, and a plurality of heat exchange portions 12 that are concave or convex to the basic contour portion 11, and the plurality of heat exchange portions 12 are evenly distributed along the basic contour portion 11, wherein the basic contour portion 11 is the contour portion of the heat exchange hole 1 minus the heat exchange portion 12.

[0006] As an optional embodiment, the basic contour portion 11 is a circular structure, and the plurality of heat exchange portions 12 are evenly distributed on the arc of the basic contour portion 11 .

[0007] As an optional embodiment, the distance between adjacent heat exchange parts 12 is not less than the average width of the heat exchange parts 12 , wherein the width of the heat exchange parts 12 is the circumferential dimension of the heat exchange parts 12 along the basic contour part 11 .

[0008] As an optional embodiment, the closest distance between the edges of any two of the heat exchange parts 12 is not less than a preset distance, and the length of the heat exchange part 12 is within a preset range of the inner concave or outer convex of the basic contour part 11, wherein the length of the heat exchange part 12 is the radial dimension of the heat exchange part 12 along the basic contour part 11.

[0009] As an optional embodiment, the thickness of the plurality of heat exchange parts 12 is the same as the thickness of the structure where the heat exchange hole 1 is located, wherein the thickness is the axial dimension of the heat exchange hole 1 .

[0010] As an optional embodiment, the shape of the heat exchange portion 12 is one of the following: semicircular, conical, trapezoidal, or T-shaped.

[0011] As an optional embodiment, in the case where the heat exchange portion 12 is recessed inwardly of the basic contour portion 11 , the heat exchange portion 12 is fixedly arranged on the basic contour portion 11 inwardly based on the basic contour portion 11 .

[0012] As an optional embodiment, when the heat exchange portion 12 protrudes outward from the basic contour portion 11, the heat exchange portion 12 is based on the basic contour portion 11 to open a corresponding gap outward to form an external contour portion 13 corresponding to the basic contour portion 11, and the heat exchange portion 12 is arranged on the external contour portion 13.

[0013] As an optional embodiment, the intermediate structure includes at least one of the following: a motor housing, a motor core, and a rotor bracket.

[0014] According to one aspect of the present application, a motor is provided, comprising any one of the motor heat exchange structures described above.

[0015] In the present application, multiple heat exchange parts that are concave or convex to the basic contour part are arranged on the basic contour part of the heat exchange hole, and the multiple heat exchange parts are evenly distributed along the basic contour part, which can not only increase the contact area between the heat exchange hole and the heat exchange fluid, but also improve the temperature distribution uniformity of the cross section of the heat exchange fluid perpendicular to the flow direction, thereby improving the heat dissipation efficiency and reducing the requirements for the minimum temperature of the cooling fluid. This solves the problem in the related art that the heat exchange of the motor adopts conventional circular and square heat exchange holes, the heat exchange efficiency is low, and the temperature distribution of the fluid cross section flowing through the heat exchange hole is uneven, which is not conducive to heat exchange. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1-1 This is a schematic diagram of the heat exchange holes of the concave semicircular heat exchange portion disclosed in the present application.

[0018] Figure 1-2 This is a schematic diagram of the heat exchange holes of the outwardly convex semicircular heat exchange portion disclosed in the present application.

[0019] Figure 2-1 It is a schematic diagram of the heat exchange holes of the concave conical heat exchange part disclosed in the present application.

[0020] Figure 2-2 This is a schematic diagram of the heat exchange holes of the outwardly convex conical heat exchange portion disclosed in the present application.

[0021] Figure 3-1 This is a schematic diagram of the heat exchange holes of the concave trapezoidal heat exchange portion disclosed in the present application.

[0022] Figure 3-2 This is a schematic diagram of the heat exchange holes of the outwardly convex trapezoidal heat exchange portion disclosed in the present application.

[0023] Figure 4-1 It is a schematic diagram of the heat exchange hole of the concave T-shaped heat exchange part disclosed in this application.

[0024] Figure 4-2 This is a schematic diagram of the heat exchange holes of the outwardly convex T-shaped heat exchange portion disclosed in the present application.

[0025] The reference numerals are as follows:

[0026] 1—heat exchange hole, 11—base contour portion, 12—heat exchange portion, 13—external contour portion. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0029] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0030] See also Figure 1-1 to Figure 4-2 As shown, the present application provides a motor heat exchange structure, including a heat exchange hole 1 arranged on an intermediate structure between a motor heat-generating component and a cooling position, wherein the heat exchange hole 1 is used for circulation of a heat exchange fluid.

[0031] The heat-generating components of the motor are generally the components that convert electrical energy into mechanical energy, that is, the rotor part. Since the energy conversion cannot be fully converted, heat will be generated. The generated heat will be transferred to the surrounding medium, including other structures of the motor and the heat exchange fluid inside the motor. After the heat exchange fluid absorbs the heat of the heat-generating components, it flows to the cooling position through the heat exchange hole 1 on the intermediate structure for cooling, thereby realizing the heat exchange of the motor.

[0032] The common heat exchange holes 1 in the related art can be circular, trapezoidal, rectangular, etc. This type of heat exchange hole 1, on the one hand, has a small heat exchange area, and the temperature distribution of the heat exchange fluid in the cross section perpendicular to the flow direction is also very uneven, which greatly reduces the heat exchange effect of the heat exchange hole 1 and increases the requirement for the minimum temperature of the cooling fluid.

[0033] The heat exchange hole 1 of the click heat exchange structure provided in this embodiment includes a basic contour portion 11, and a plurality of heat exchange portions 12 that are concave or convex on the basic contour portion 11, and the plurality of heat exchange portions 12 are evenly distributed along the basic contour portion 11, wherein the basic contour portion 11 is the contour portion of the heat exchange hole 1 excluding the heat exchange portion 12.

[0034] The basic profile portion 11 is also the basic profile of the heat exchange hole 1, which is similar to the common heat exchange hole 1 in the related art, and can be circular, trapezoidal, rectangular, etc. Preferably, the present embodiment uses a circular heat exchange hole 1, which has better circulation and heat exchange effects than trapezoidal and rectangular ones, and the temperature distribution of the heat exchange fluid is relatively uniform. In this way, after the heat exchange structure is set on the basic profile portion 11, the circulation effect can be better guaranteed, and it is also easier to achieve a more uniform temperature distribution.

[0035] To concavely arrange multiple heat exchange parts 12 on the basic profile is to directly fix multiple heat exchange parts 12 inside the basic profile part 11, so that the heat exchange parts 12 are all inside the basic profile part 11. To convexly arrange multiple heat exchange parts 12 on the basic profile is to first expand an external profile part 13 outside the basic profile part 11, and open multiple gaps outside the heat exchange parts 12 between the external profile part 13 and the basic profile part 11, so that the heat exchange parts 12 are all on the external profile part 13, that is, outside the basic profile part 11 and inside the external profile part 13.

[0036] This embodiment utilizes the above-mentioned motor heat exchange structure, and by providing a plurality of heat exchange parts 12 that are concave or convex on the basic contour part 11 on the basic contour part 11 of the heat exchange hole 1, the plurality of heat exchange parts 12 are evenly distributed along the basic contour part 11, which can not only increase the contact area between the heat exchange hole 1 and the heat exchange fluid, but also improve the temperature distribution uniformity of the cross section of the heat exchange fluid perpendicular to the flow direction, thereby improving the heat dissipation efficiency and reducing the requirement for the minimum temperature of the cooling fluid.

[0037] This solves the problem in the related art that the heat exchange of the motor adopts conventional circular or square heat exchange holes 1, the heat exchange efficiency is low, and the temperature distribution of the cross section of the fluid flowing through the heat exchange holes 1 is uneven, which is not conducive to heat exchange.

[0038] As an optional embodiment, the basic contour portion 11 is a circular structure, and the plurality of heat exchange portions 12 are evenly distributed on the arc of the basic contour portion 11 .

[0039] The present embodiment preferably adopts a circular heat exchange hole 1 as the basic contour. Compared with other shapes such as a trapezoid and a rectangle, the circular heat exchange hole 1 has better circulation effect and heat exchange effect, and the temperature distribution of the heat exchange fluid is relatively uniform.

[0040] Multiple heat exchange parts 12 are evenly distributed on the arc of the basic contour part 11. On the one hand, the heat exchange fluid can flow better in the heat exchange hole 1. On the other hand, the circular heat exchange hole 1 with multiple heat exchange parts 12 can also more easily achieve a more uniform temperature distribution.

[0041] As an optional embodiment, the distance between adjacent heat exchange parts 12 is not less than the average width of the heat exchange part 12 , wherein the width of the heat exchange part 12 is the circumferential dimension of the heat exchange part 12 along the base profile part 11 .

[0042] Considering that the heat exchange part 12 realizes heat exchange by utilizing the flow of the heat exchange fluid in the heat exchange hole 1, it is also an obstacle to the circulation of the heat exchange fluid during the heat exchange process. In order to further ensure the flow of the heat exchange fluid in the heat exchange hole 1 and avoid the heat exchange part 12 being too large in size to affect the circulation of the heat exchange fluid, the distance between adjacent heat exchange parts 12 in this embodiment is not less than the average width of the heat exchange part 12.

[0043] It should be noted that the width of the heat exchange portion 12 here may be the average width of the heat exchange portion 12 .

[0044] As an optional embodiment, the closest distance between the edges of any two heat exchange parts 12 is not less than a preset distance, and the length of the heat exchange part 12 is within a preset range of the inner concave or outer convex of the basic contour part 11, wherein the length of the heat exchange part 12 is the radial dimension of the heat exchange part 12 along the basic contour part 11.

[0045] Similarly, in order to further ensure the flow of the heat exchange fluid in the heat exchange hole 1 and avoid the heat exchange part 12 being too large in size to affect the circulation of the heat exchange fluid, the closest distance between the edges of any two heat exchange parts 12 in this embodiment is not less than the preset distance, and the length of the heat exchange part 12 is within the preset range of the inner concave or outer convex of the basic contour part 11.

[0046] The preset range can be understood as the range formed by the contour of the basic contour portion 11 after scaling a certain range based on the geometric center and the basic contour portion 11. For example, in the case of the circular basic contour portion 11, when it is concave, the heat exchange portion 12 is required to be no more than a concentric circle contour with a radius of 1 / 2 of the basic contour portion 11, or when it is convex, the heat exchange portion 12 is required to be no more than a concentric circle contour with a radius of 1.5 times that of the basic contour portion 11, that is, the radius of the external contour portion 13 is no more than 1.5 times that of the basic contour portion 11.

[0047] As an optional embodiment, the thickness of the plurality of heat exchange parts 12 is the same as the thickness of the structure where the heat exchange hole 1 is located, wherein the thickness is the axial dimension of the heat exchange hole 1 .

[0048] The heat exchange portion 12 has the same thickness as the heat exchange hole 1, which can ensure that the heat exchange fluid can exchange heat as much as possible when flowing in the heat exchange hole 1, thereby improving the heat exchange efficiency. On the other hand, from a manufacturing perspective, the construction of the heat exchange hole 1 is also more convenient.

[0049] As an optional embodiment, the shape of the heat exchange portion 12 is one of the following: semicircular, conical, trapezoidal, or T-shaped.

[0050] like Figure 1-1 and Figure 1-2 As shown, the heat exchange portion 12 is semicircular. Figure 2-1 and Figure 2-2As shown in FIG. 1 , the heat exchange portion 12 is conical. Figure 3-1 and Figure 3-2 As shown, the heat exchange portion 12 is a trapezoidal shape. Figure 4-1 and Figure 4-2 As shown, the heat exchange portion 12 is T-shaped.

[0051] It should be noted that the T-shape is a shape in which the width of the head is greater than the width of the bottom, and the width of the waist is less than the width of the bottom, which is roughly T-shaped. Figure 4-1 and Figure 4-2 The structure shown may also be other deformed structures that meet the above dimensions.

[0052] As an optional embodiment, when the heat exchange portion 12 is recessed in the basic contour portion 11 , the heat exchange portion 12 is fixedly arranged on the basic contour portion 11 inwardly based on the basic contour portion 11 .

[0053] The multiple heat exchange parts 12 are arranged concavely on the basic profile, that is, multiple heat exchange parts 12 are fixed directly inside the basic profile part 11, so that the heat exchange parts 12 are all inside the basic profile part 11. This is to ensure that the heat exchange hole 1 after the heat exchange parts 12 are arranged can still maintain the original size.

[0054] like Figure 1-1 , Figure 2-1 , Figure 3-1 and Figure 4-1 As shown, there are circular basic contour parts 11, and heat exchange parts 12 of different shapes are arranged concavely therein. The dotted line part in the figure is also the basic contour part 11.

[0055] As an optional embodiment, when the heat exchange portion 12 protrudes outward from the basic contour portion 11, the heat exchange portion 12 is based on the basic contour portion 11 to open a corresponding gap outward to form an external contour portion 13 corresponding to the basic contour portion 11, and the heat exchange portion 12 is arranged on the external contour portion 13.

[0056] A plurality of heat exchange parts 12 are arranged on the base contour in a protruding manner, that is, an outer contour part 13 is firstly expanded outside the base contour part 11, and a plurality of gaps outside the heat exchange parts 12 are opened between the outer contour part 13 and the base contour part 11, so that the heat exchange parts 12 are all on the outer contour part 13, that is, outside the base contour part 11 and inside the outer contour part 13. This is to ensure that the heat exchange hole 1 after the heat exchange part 12 is arranged, on the basis of ensuring the original fluid flux, the area of ​​the hole is increased, and the heat exchange efficiency is higher and the heat distribution is more uniform by using the heat exchange part 12.

[0057] like Figure 1-2 , Figure 2-2 , Figure 3-2 and Figure 4-2As shown, there are circular basic contour parts 11, and heat exchange parts 12 of different shapes are convexly arranged outside. The dotted line part in the figure is also the external contour part 13.

[0058] As an optional embodiment, the intermediate structure includes at least one of the following: a motor housing, a motor core, and a rotor bracket.

[0059] The heat exchange hole 1 is located on the motor housing, the motor core or the rotor bracket, and is used for circulating heat exchange gas or liquid to achieve the purpose of cooling, heat dissipation or heat absorption.

[0060] According to one aspect of the present application, an embodiment of the present application further provides a motor, comprising any one of the above-mentioned motor heat exchange structures.

[0061] The motor includes any of the above motor heat exchange structures, and thus the motor includes all the technical effects of the above electric shock heat exchange structure. As the technical effects of the electrode assembly have been described in detail above, they will not be repeated here.

[0062] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0063] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0064] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A motor heat exchange structure, characterized in that: It comprises a heat exchange hole (1) arranged on an intermediate structure between a motor heat generating component and a cooling position, wherein the heat exchange hole (1) is used for the circulation of a heat exchange fluid; The heat exchange hole (1) comprises a basic contour portion (11), and a plurality of heat exchange portions (12) that are concave or convex on the basic contour portion (11), wherein the plurality of heat exchange portions (12) are evenly distributed along the basic contour portion (11), wherein the basic contour portion (11) is the contour portion of the heat exchange hole (1) excluding the heat exchange portion (12).

2. The motor heat exchange structure according to claim 1, characterized in that: The basic contour portion (11) is a circular structure, and the plurality of heat exchange portions (12) are evenly distributed on the circular arc of the basic contour portion (11).

3. The motor heat exchange structure according to claim 1, characterized in that: The distance between adjacent heat exchange portions (12) is not less than the average width of the heat exchange portion (12), wherein the width of the heat exchange portion (12) is the circumferential dimension of the heat exchange portion (12) along the basic contour portion (11).

4. The motor heat exchange structure according to claim 3, characterized in that: The closest distance between the edges of any two of the heat exchange portions (12) is not less than a preset distance, and the length of the heat exchange portion (12) is within a preset range of the inner concavity or outer convexity of the basic contour portion (11), wherein the length of the heat exchange portion (12) is the radial dimension of the heat exchange portion (12) along the basic contour portion (11).

5. The motor heat exchange structure according to claim 4, characterized in that: The thickness of the plurality of heat exchange parts (12) is the same as the thickness of the structure in which the heat exchange hole (1) is located, wherein the thickness is the axial dimension of the heat exchange hole (1).

6. The motor heat exchange structure according to claim 5, characterized in that: The shape of the heat exchange portion (12) is one of the following: semicircular, conical, trapezoidal, or T-shaped.

7. The motor heat exchange structure according to claim 1, characterized in that: When the heat exchange portion (12) is recessed inwardly of the basic contour portion (11), the heat exchange portion (12) is fixedly arranged on the basic contour portion (11) inwardly based on the basic contour portion (11).

8. The motor heat exchange structure according to claim 1, characterized in that: When the heat exchange portion (12) protrudes outward from the basic contour portion (11), the heat exchange portion (12) is based on the basic contour portion (11) opening a corresponding gap outward to form an external contour portion (13) corresponding to the basic contour portion (11), and the heat exchange portion (12) is arranged on the external contour portion (13).

9. The motor heat exchange structure according to any one of claims 1 to 8, characterized in that: The intermediate structure includes at least one of the following: a motor housing, a motor core, and a rotor support.

10. A motor, characterized in that: It comprises the motor heat exchange structure as claimed in any one of claims 1 to 9.

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