Variable-width and variable-number motor water channel structure and motor

Abstract

The present application provides a motor water channel structure with variable width and variable quantity and a motor. The motor water channel structure includes a return water channel, a connecting water channel, and an outlet water channel. The return water channel includes multiple layers of first return water channels and multiple layers of second return water channels. The water inlet of the top-layer first return water channel is correspondingly arranged at the welding end of the motor winding. The connecting water channel includes multiple layers of spiral connecting water channels and an outlet connecting water channel. The spiral connecting water channel connects the first return water channel and the second return water channel. The outlet water channel includes an outlet channel and water outlets arranged on the outlet channel. Wherein, a circumferential notch of the motor winding is reserved between the multiple layers of first return water channels and the multiple layers of second return water channels, and the outlet channel is axially arranged in the notch. In the embodiment of the present application, the water inlet is arranged on the side close to the welding end of the motor winding, effectively reducing the end temperature rise; while maximizing the water channel contact area and reducing the water channel flow resistance; it is applicable to the situation where there is an angular difference between the inlet and outlet positions, and has stronger flexible applicability.

Description

Technical Field

[0001] This application relates to the technical field of motor thermal control, and particularly to a motor water channel structure and a motor with variable width and variable quantity. Background Art

[0002] The prior art provides a motor water channel cooling structure, including a water inlet, a water outlet and a water channel; the water inlet and the water outlet are respectively arranged at two ends of the water channel, and the water inlet and the water outlet are arranged on the same side of the water channel. This motor water channel cooling structure is not applicable to the situation where there is an angular difference between the inlet and outlet positions, and its flexible applicability is poor; moreover, the width of the water channel is large, the overall flow rate is low, and the heat dissipation capacity needs to be further improved; the water channel coating area of the water channel structure of the electronic outer rotor motor provided by the prior art is small, there is a dead water area, and the heat dissipation capacity is poor. Summary of the Invention

[0003] The embodiments of this application provide a motor water channel structure and a motor with variable width and variable quantity to solve the problem that in the related art, the motor water channel structure is located on the same side, which is not applicable to the situation where there is a difference in the inlet and outlet angles, and the distribution of the motor water channels is unreasonable, which is not conducive to the effective heat dissipation of the flat wire motor.

[0004] In a first aspect, this application provides a motor water channel structure with variable width and variable quantity, including a return bend water channel, a connecting water channel and an outlet water channel, multiple layers of first return bend water channels and multiple layers of second return bend water channels. The water inlet of the top layer of the first return bend water channel is correspondingly arranged at the welding end of the motor winding. Each layer of the first return bend water channel is bent downwards along the outer arc of the motor winding from top to bottom. The second return bend water channel is bent downwards along the outer arc of the motor winding from top to bottom; the connecting water channel includes multiple layers of spiral connecting water channels and an outlet connecting water channel. The spiral connecting water channel connects the water channel outlet of the first return bend water channel and the water channel inlet of the upper layer of the second return bend water channel; the outlet water channel includes an outlet channel and a water outlet arranged on the outlet channel. The outlet connecting water channel connects the second return bend water channel and the outlet channel;

[0005] Wherein, a circumferential notch of the motor winding is reserved between the multiple layers of first return bend water channels and the multiple layers of second return bend water channels, and the outlet channel is axially arranged in the notch.

[0006] In some embodiments, the first return bend water channel is bent downwards along 1 / 3 - 1 / 2 of the outer circle of the motor winding from top to bottom.

[0007] In some embodiments, the second return bend water channel is bent downwards along 1 / 3 - 1 / 2 of the outer circle of the motor winding from top to bottom.

[0008] In some embodiments, the water outlet connecting water channel includes a circumferential connecting water channel arranged along the outer arc of the motor winding and a bottom annular water channel, and the circumferential connecting water channel, the annular water channel and the water outlet channel are communicated in sequence.

[0009] In some embodiments, the lower water channel in the bottommost second return water channel is higher than the lower water channel in the bottommost first return water channel.

[0010] In some embodiments, a water inlet nozzle and a water outlet nozzle are respectively arranged at the water inlet and the water outlet, and the axial direction of the water inlet nozzle is non-coaxial with the axial direction of the water inlet.

[0011] In some embodiments, the water outlet channel extends upward along the axis direction of the motor winding from the connection with the annular water channel.

[0012] In some embodiments, the water inlet and the water outlet are on the same horizontal plane.

[0013] In some embodiments, the water channels of the return water channel and the water outlet channel have the same width.

[0014] In a second aspect, the present application provides a motor, including the variable-width and variable-number motor water channel structure as described above.

[0015] The beneficial effects brought by the technical solutions provided by the present application include:

[0016] The embodiments of the present application provide a variable-width and variable-number motor water channel structure. Since the water inlet is arranged on one side close to the welding end of the motor winding, the outgoing line end is preferentially cooled, effectively reducing the temperature rise at the end.

[0017] The motor cooling water channel adopts a circumferentially arranged return water channel, a spiral connecting water channel and an axially arranged water outlet channel, which maximally increases the water channel contact area while reducing the water channel flow resistance, with uniform flow, no dead water area generated, and increased turbulence in the rotation area to enhance heat dissipation.

[0018] The water inlet and the water outlet are arranged on different sides, which is suitable for the situation where there is an angular difference between the inlet and outlet positions, and has stronger flexibility and applicability. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1Schematic three-dimensional structure diagram of the motor cooling water channel structure in an embodiment of the present application;

[0021] Figure 2 Front view structure diagram of the motor cooling water channel structure in an embodiment of the present application;

[0022] Figure 3 Another three-dimensional structure diagram of the motor cooling water channel structure in an embodiment of the present application;

[0023] Figure 4 Another front view structure diagram of the motor cooling water channel structure in an embodiment of the present application;

[0024] Figure 5 Another three-dimensional structure diagram of the motor cooling water channel structure in an embodiment of the present application;

[0025] Figure 6 Partial three-dimensional structure diagram of the motor cooling water channel structure in an embodiment of the present application;

[0026] Figure 7 Schematic diagram of the cooling water flow direction in the motor cooling water channel structure in an embodiment of the present application.

[0027] In the figure: 1, return bend water channel; 11, first return bend water channel; 110, water inlet nozzle; 12, second return bend water channel; 2, connecting water channel; 21, spiral connecting water channel; 22, outlet connecting water channel; 221, circumferential connecting water channel; 222, annular water channel; 3, outlet water channel; 30, water outlet nozzle; 4, notch; 5, gap. Detailed implementation manners

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0029] In the first aspect, please refer to Figure 1-2, this application provides a motor water channel structure with variable width and variable quantity, including a return water channel 1, a connecting water channel 2 and a water outlet channel. There are multiple layers of first return water channels 11 and multiple layers of second return water channels 12. The water inlet of the top-layer first return water channel 11 is correspondingly arranged at the welding end of the motor winding. Each layer of the first return water channel 11 is bent downwards along the outer arc of the motor winding. The second return water channel 12 is bent downwards along the outer arc of the motor winding. The connecting water channel 2 includes multiple layers of spiral connecting water channels 21 and a water outlet connecting water channel 22. The spiral connecting water channel 21 connects the water outlet of the first return water channel 11 and the water inlet of the second return water channel 12 in the upper layer. The water outlet channel includes a water outlet channel 3 and a water outlet arranged on the water outlet channel 3. The water outlet connecting water channel 22 connects the second return water channel 12 and the water outlet channel 3. Among them, a circumferential gap 4 of the motor winding is reserved between the multiple layers of first return water channels 11 and the multiple layers of second return water channels 12, and the water outlet channel 3 is axially arranged in the gap 4.

[0030] In one embodiment, the water inlet and the water outlet are located on different sides of the radial loop of the motor water channel structure. In one embodiment, both ends of the multiple layers of first return water channels 11 are vertically flush, and both ends of the multiple layers of second return water channels 12 are vertically flush. The gap 4 is a straight vertical gap 4.

[0031] The motor water channel structure with variable width and variable quantity provided by this application, through the reasonable design of the motor water channel, sets the water inlet of the motor water channel on one side of the motor water channel structure close to the welding end of the motor winding. Since the water temperature at the water inlet is the lowest in the entire motor water channel structure, it has the effect of preferentially cooling the welding end of the motor winding. Setting the water inlet and the water outlet of the motor water channel structure on different sides of the motor water channel structure can flexibly apply to the situation where there is an angular difference between the inlet and outlet positions, and the applicability is stronger. At the same time, through the circumferentially arranged multiple layers of first return water channels 11, multiple layers of second return water channels 12, multiple layers of spiral connecting water channels 21, etc., the uniform transition heat dissipation of the housing water channel and the circumferential full-coverage heat dissipation effect of the motor winding are realized, the water channel contact area is maximally increased while the water channel flow resistance is reduced, and the turbulence is increased in the rotating area to enhance heat dissipation.

[0032] As described above, the return bend can also be described as a rotation or a U-turn. More specifically, the first return bend water channel 11 is formed by a water channel extending circumferentially along the first partial arc of the outer periphery of the motor winding and then turning back downward. The second return bend water channel 12 is formed by a water channel extending circumferentially along the second partial arc of the outer periphery of the motor winding and then turning back downward. The water inlets of the first return bend water channel 11 and the second return bend water channel 12 are both on the upper side, and the water outlets are both on the lower side. Each layer of the first return bend water channel 11 includes an upper water channel, a lower water channel, and a return bend area connecting the two. Each layer of the second return bend water channel 12 includes an upper water channel, a lower water channel, and a return bend area connecting the two.

[0033] In one embodiment, please refer to Figure 1 and Figure 6 , there is a gap 5 and a notch 4 between the two ends of the first arc portion and the two ends of the second arc portion. Correspondingly, the two sides of the gap 5 described by the first arc portion and the second arc portion are defined. The spiral connecting water channel 21 connects the water channel outlet of the first return bend water channel 11 and the water channel inlet of the second return bend water channel 12 located on the same horizontal plane or nearly the same horizontal plane. The water outlet channel 3 is axially arranged in the notch 4, that is, the extending direction of the water outlet channel 3 is the same as the axis direction of the motor water channel structure or the axis direction of the flat wire motor. More specifically, the extending direction of the water outlet channel 3 is axially extended from bottom to top.

[0034] In one embodiment, please refer to Figure 5 , the spiral connecting water channel 21 is inclined upward to enable the upper water channels and the lower water channels of the first return bend water channel 11 and the second return bend water channel 12 on the same layer to be respectively arranged on the same horizontal plane or at the same height, achieving a full-area coverage effect of the circumferential water channels of the flat wire motor and improving the heat dissipation efficiency.

[0035] As described above, the same layer is defined as the first return bend water channel 11 of the first layer and the second return bend water channel 12 of the first layer being the same layer of water channels.

[0036] In one embodiment, the inclination angle of the spiral connecting water channel 21 is 45°.

[0037] In one embodiment, the arc angle range of the first arc portion is 1 / 3 - 1 / 2 of a circle, that is, 60° - 180°, and the arc angle range of the second arc portion is 1 / 3 - 1 / 2 of a circle.

[0038] In one embodiment, please refer to Figure 5 , the water outlet connecting water channel 22 includes a circumferential connecting water channel 221 arranged along the arc of the outer periphery of the motor winding and a bottom annular water channel 222. The circumferential connecting water channel 221, the annular water channel 222, and the water outlet channel 3 are connected in sequence.

[0039] In one embodiment, the annular water channel 222 is annularly arranged along the outer periphery of the flat wire motor, but not a complete ring, that is, it connects the water channel outlet of the connected water channel and the water channel inlet of the water channel 3 at the notch 4.

[0040] In one embodiment, the annular water channel 222 includes a first annular water channel part and a second annular water channel part. The first annular water channel part is arranged at the lower layer of the multi-layer first return bend water channel 11, and the second annular water channel part is arranged at the lower layer of the circumferential connection water channel 221.

[0041] In one embodiment, the water channel width or diameter of the annular water channel part is greater than that of the second annular water channel part.

[0042] In one embodiment, the lower water channel in the lowermost second return bend water channel 12 is higher than the lower water channel in the lowermost first return bend water channel 11. The circumferential connection water channel 221 is higher than the first annular water channel part. Through the arrangement of the circumferential connection water channel 221, the water channel covering window on the outer periphery of the flat wire motor between the lowermost second return bend water channel 12 and the annular water channel 222 is filled, so as to increase the area coverage rate of the motor water channel structure covering the flat wire motor, and provide a uniform transition connection between the water channel outlet of the connection water channel 2 and the water channel inlet of the annular water channel 222, avoiding the generation of dead water areas between the two. At the same time, the turbulence in the water channel is increased through the connection and turning area between the water channels, strengthening the heat dissipation effect.

[0043] In one embodiment, please refer to Figure 3 , a water inlet nozzle 110 and a water outlet nozzle 30 are respectively installed at the water inlet and the water outlet. The axial direction of the water inlet nozzle 110 is not coaxial with the axial direction of the water inlet to adapt to the installation of the water pipe at the limited water inlet.

[0044] In one embodiment, the water channel 3 extends upward along the axis direction of the motor winding from the connection with the annular water channel 222.

[0045] In one embodiment, the water inlet and the water outlet are on the same horizontal plane.

[0046] In other embodiments of the present application, the water inlet is located on the top water channel of the motor water channel structure, and the water outlet is located on the top layer of the water channel 3. According to the different heights of the upward extension of the water channel 3 in the axial direction, the water inlet can also be realized to be not on the same horizontal plane as the water outlet to adapt to the situation where there is a height difference between the water inlet and the water outlet.

[0047] In one embodiment, the water channel width or diameter of the return bend water channel 1 and the water channel 3 is the same.

[0048] In one embodiment, according to the heat dissipation requirement, the water flow velocity in the motor water channel structure can also be increased by reducing the width and diameter of the water channels, so as to improve the heat dissipation capacity of the motor water channel structure on the outer periphery of the flat wire motor. That is, by reducing the water channel width of the first return bend water channel 11, the second return bend water channel 12 and the water outlet channel 3, correspondingly, increasing the number of layers of the first return bend water channel 11 and the second return bend water channel 12, so as to achieve improving the heat dissipation effect of the flat wire motor by increasing or increasing the water channel width and the number of water channels of the motor water channel structure.

[0049] In a more specific embodiment, the motor water channel structure with variable width and variable number provided by the present application includes two layers of first return bend water channels 11, two layers of second return bend water channels 12, one layer of connecting water channels 2 and one layer of annular water channels 222. As Figure 4 shown, in order to achieve the inlet and outlet of the water channels at the same side end at a certain angle, 5 annular water channels are arranged on the left side water channel, including two layers of first return bend water channels 11 and one layer of first annular water channel part, and the water channel widths are the same. 6 annular water channels are arranged on the right side, including two layers of second return bend water channels 12, one layer of circumferential connecting water channel 221 and one layer of second annular water channel part. Among them, the widths of the 1-3 water channels on the right side are the same as those of the left side water channel, and the widths of the 4-6 water channels are slightly smaller than those of the left side water channel. By forming a right-side rotation between the 4th and 5th water channels on the right side, the coverage of the entire water channel area of the housing is achieved, and the transition is uniform without dead water areas, and the turbulence is increased in the rotation area to enhance heat dissipation.

[0050] In one embodiment, as Figure 7 shown, the water flow direction of the motor water channel structure with variable width and variable number provided by the present application is a→b→c→d→e→f→g→h→i→j→k→l→m→n→o→p→q→r→s→t. Among them, a, b, c are the first return bend water channels 11 of the first layer, h, i are the first return bend water channels 11 of the second layer, d, e, f are the first return bend water channels 12 of the first layer, k, l are the first return bend water channels 11 of the second layer, d, g, j are the spiral connecting water channels 21, o is the connecting water channel 2, p, q, r are the annular water channels 222, and s is the water outlet channel 3.

[0051] In the second aspect, the present application provides a motor, including the motor water channel structure with variable width and variable number as described above. By arranging the water inlet close to the welding end of the motor winding for preferential cooling and heat dissipation, and setting the return bend water channel 1, the water outlet channel and the connecting water channel 2, the full coverage of the water channels on the outer periphery of the flat wire motor is achieved. While effectively improving the heat dissipation capacity, the water flow resistance between the water channels is avoided, and the turbulence is increased in the rotation area to achieve the effect of enhancing heat dissipation.

[0052] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. Unless otherwise clearly specified and defined, the terms "installed", "connected" and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0053] It should be noted that in the present application, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of another identical element in the process, method, article or device comprising the said element.

[0054] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A motor water channel structure with variable width and variable quantity, characterized in that Comprising: Return-bend water channels, including multiple layers of first return-bend water channels and multiple layers of second return-bend water channels. The water inlet of the top-layer first return-bend water channel is correspondingly arranged at the welding end of the motor winding. Each layer of the first return-bend water channel is arranged to bend downward along the outer arc of the motor winding from top to bottom. The second return-bend water channel is arranged to bend downward along the outer arc of the motor winding from top to bottom; Connecting water channels, including multiple layers of spiral connecting water channels and an outlet connecting water channel. The spiral connecting water channel connects the water outlet of the first return-bend water channel and the water inlet of the upper-layer second return-bend water channel; Outlet water channels, including an outlet channel and an outlet arranged on the outlet channel. The outlet connecting water channel connects the second return-bend water channel and the outlet channel. The outlet channel is arranged axially; Wherein, a circumferential gap of the motor winding is reserved between the multiple layers of first return-bend water channels and the multiple layers of second return-bend water channels. The outlet channel is axially arranged in the gap; The water inlet and the water outlet are located on different sides of the motor water channel structure; The outlet connecting water channel includes a circumferential connecting water channel arranged along the outer arc of the motor winding and a bottom-layer annular water channel. The circumferential connecting water channel, the annular water channel and the outlet channel are communicated in sequence; The lower water channel in the bottom-layer second return-bend water channel is higher than the lower water channel in the bottom-layer first return-bend water channel.

2. The variable-width and variable-number motor water channel structure according to claim 1, characterized in that The first return-bend water channel is arranged to bend downward along 1 / 3 - 1 / 2 of the outer circle of the motor winding from top to bottom.

3. The variable-width and variable-number motor water channel structure according to claim 1, wherein, The second return-bend water channel is arranged to bend downward along 1 / 3 - 1 / 2 of the outer circle of the motor winding from top to bottom.

4. The variable-width and variable-number motor water channel structure according to claim 1, wherein, Water inlets and water outlets are respectively provided with water inlet nozzles and water outlet nozzles. The axial direction of the water inlet nozzle is non-coaxial with the axial direction of the water inlet.

5. The variable-width and variable-number motor water channel structure according to claim 1, characterized in that, The outlet channel extends upward along the axis direction of the motor winding from the connection with the annular water channel.

6. The variable-width and variable-number motor water channel structure according to claim 5, wherein The water inlet and the water outlet are on the same horizontal plane.

7. The variable-width and variable-number motor water channel structure according to claim 1, characterized in that, The water channel widths of the first return-bend water channel, the second return-bend water channel and the outlet channel are the same.

8. A motor, characterized in that, Comprising the motor water channel structure with variable width and variable quantity according to any one of claims 1 - 7.

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