A disc motor cooling structure

Abstract

The present invention discloses a disk motor cooling structure comprising a stator core, a stator housing, a first baffle, a second baffle, a first coil, a second coil, and a separator plate. The separator plate is interposed between the first and second coils. Adjacent stator units are provided with a third cooling channel connecting the first and second cavities. With this disk motor cooling structure, the liquid refrigerant can fully engage in direct heat exchange with core heat-generating components such as the stator core, the first coil, and the second coil, thereby improving the heat dissipation efficiency of the disk motor and extending its service life.

Description

Technical Field

[0001] The present invention relates to the technical field of heat dissipation of disc motors, and in particular to a cooling structure of a disc motor. Background Art

[0002] To improve the efficiency of disc motors, a cooling system must be designed. There are two main types of cooling systems: air cooling and liquid cooling. Liquid cooling is more efficient than air cooling. Existing liquid cooling systems primarily use external cooling, where the coolant comes into indirect contact with the cooled components. This results in low cooling efficiency and shortens the disc motor's service life.

[0003] Therefore, how to extend the service life of the disc motor has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] The object of the present invention is to provide a disk motor cooling structure to extend the service life of the disk motor.

[0005] To achieve the above objectives, the present invention provides a disk-type motor cooling structure, comprising:

[0006] A stator core, wherein the stator core has a plurality of stator cells;

[0007] a stator housing, the stator housing sealing the stator core; the stator housing and the exterior of the stator core forming a first cavity; the stator housing and the interior of the stator core forming a second cavity; the stator housing being provided with a liquid inlet channel, a liquid outlet channel, a liquid inlet, a liquid outlet, a liquid spray port, and a liquid return port; the liquid inlet channel connecting the liquid inlet and the liquid spray port; and the liquid outlet channel connecting the liquid outlet and the liquid return port;

[0008] a first baffle plate and a second baffle plate disposed between the exterior of the stator core and the stator housing, the first baffle plate and the second baffle plate isolating the first cavity into a first cooling channel and a second cooling channel, the first cooling channel being in communication with the liquid outlet, and the second cooling channel being in communication with the liquid return port;

[0009] A first coil and a second coil are provided on the stator monomers, wherein the first coils on adjacent stator monomers are closely matched, and the second coils on adjacent stator monomers are closely matched;

[0010] A partition plate is located between the first coil and the second coil, and a third cooling channel is provided between adjacent stator monomers, communicating with the first cavity and the second cavity.

[0011] In one embodiment of the present invention, the partition plate includes a first partition plate and a second partition plate, wherein the first partition plate is disposed outside the stator unit, and the second partition plate is disposed inside the stator unit.

[0012] In one embodiment of the present invention, the width of the first partition plate is smaller than the width of the outer portion of the stator unit.

[0013] In one embodiment of the present invention, the first partition plate is fixed on the first coil and the second coil.

[0014] In one embodiment of the present invention, the width of the second partition plate is smaller than the inner width of the stator unit.

[0015] In one embodiment of the present invention, the second partition plate is fixed on the first coil and the second coil.

[0016] In one embodiment of the present invention, the stator housing includes a stator outer shell, a stator inner shell, a front stator plate and a rear stator plate, the stator outer shell stator core is located between the stator outer shell and the stator inner shell, the front stator plate is arranged on the first end face of the stator outer shell, and the rear stator plate is arranged on the second end face of the stator outer shell, and the stator outer shell, the outside of the stator core, the front stator plate and the rear stator plate form the first cavity; the stator inner shell, the inside of the stator core, the front stator plate and the rear stator plate form the second cavity.

[0017] In one embodiment of the present invention, one or more of the liquid inlet, the liquid outlet, the liquid spray port and the liquid return port are arranged on the stator outer shell, the stator inner shell, the front stator plate or the rear stator plate.

[0018] In one embodiment of the present invention, there are multiple liquid spraying ports, and each liquid spraying port corresponds to the middle portion of the stator unit.

[0019] In one embodiment of the present invention, the stator core is a segmented core.

[0020] According to the disk motor cooling structure of the present invention, the liquid refrigerant enters the liquid inlet channel from the liquid inlet and enters the first cooling channel through the oil injection port; the liquid refrigerant entering the first cooling channel exchanges heat with the first and second coils outside the stator core, and then enters the third cooling channel and exchanges heat with the first and second coils on the stator monomer corresponding to the third cooling channel, and then enters the second cavity, and the liquid refrigerant in the second cavity exchanges heat with the first and second coils inside the stator core, and then passes through the third channel and exchanges heat with the first and second coils on the stator monomer corresponding to the third cooling channel, and then enters the second cooling channel, and the liquid refrigerant entering the second cooling channel exchanges heat with the first and second coils outside the stator core, and then enters the liquid outlet channel through the liquid return port and flows out from the liquid outlet. It can be seen that in the above process, the liquid refrigerant can fully directly contact and heat exchange with the core heat-generating components such as the stator core, the first coil and the second coil, thereby improving the heat dissipation efficiency of the disk motor and extending the service life of the disk motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the three-dimensional structure of a disk-type motor cooling structure provided by an embodiment of the present invention;

[0023] Figure 2 A partially enlarged schematic diagram of a disk-type motor cooling structure provided by an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of an exploded structure of a disk-type motor cooling structure provided by an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the principle of a disk-type motor cooling structure provided by an embodiment of the present invention.

[0026] Wherein: 100 is the stator core, 200 is the stator housing, 300 is the first baffle, 400 is the second baffle, 500 is the first coil, 600 is the second coil, 700 is the partition plate, 800 is the first cavity, 900 is the second cavity, 101 is the stator unit, 201 is the liquid inlet, 202 is the liquid outlet, 203 is the liquid inlet channel, 204 is the liquid outlet channel, 205 is the liquid spray port, 206 is the liquid return port, 701 is the first partition plate, 702 is the second partition plate, 801 is the first cooling channel, 802 is the second cooling channel;

[0027] 200-1 is the stator outer shell, 200-2 is the stator inner shell, 200-3 is the front stator plate, and 200-4 is the rear stator plate. DETAILED DESCRIPTION

[0028] The core of the present invention is to provide a disk motor cooling structure to extend the service life of the disk motor.

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and implementation methods.

[0030] Please refer to Figures 1 to 4 The disc motor cooling structure disclosed in the present invention includes a stator core 100, a stator housing 200, a first baffle 300, a second baffle 400, a first coil 500, a second coil 600 and a partition plate 700, wherein the stator core 100 has a plurality of stator monomers 101; the stator housing 200 seals the stator core 100, the stator housing 200 and the outside of the stator core 100 form a first cavity 800, and the stator housing 200 and the inside of the stator core 100 form a second cavity 900, and the stator housing 200 is provided with a liquid inlet channel 203, a liquid outlet channel 204, a liquid inlet 201, a liquid outlet 202, a liquid spray port 205 and a liquid return port 206, wherein the liquid inlet channel 203 connects the liquid inlet 201 and the liquid spray port 205, and the liquid outlet channel 204 connects the liquid outlet 202 and the liquid return port 206. 6; The first baffle plate 300 and the second baffle plate 400 are arranged between the outside of the stator core 100 and the stator shell 200. The first baffle plate 300 and the second baffle plate 400 isolate the first cavity 800 into a first cooling channel 801 and a second cooling channel 802. The first cooling channel 801 is connected to the liquid outlet 202, and the second cooling channel 802 is connected to the liquid return port 206; the first coil 500 and the second coil 600 are arranged on the stator monomer 101, and the first coils 500 on adjacent stator monomers 101 are tightly matched, and the second coils 600 on adjacent stator monomers 101 are tightly matched; the partition plate 700 is between the first coil 500 and the second coil 600, and a third cooling channel connecting the first cavity 800 and the second cavity 900 is provided between adjacent stator monomers 101.

[0031] With the disk motor cooling structure of the present invention, the liquid refrigerant enters the liquid inlet channel 203 from the liquid inlet 201 and enters the first cooling channel 801 through the oil spray port; the liquid refrigerant entering the first cooling channel 801 exchanges heat with the first coil 500 and the second coil 600 outside the stator core 100, and then enters the third cooling channel and exchanges heat with the first coil 500 and the second coil 600 on the stator monomer 101 corresponding to the third cooling channel, and then enters the second cavity 900, and is located in the second cavity 900. The liquid refrigerant exchanges heat with the first coil 500 and the second coil 600 inside the stator core 100, then passes through the third channel and exchanges heat with the first coil 500 and the second coil 600 on the stator monomer 101 corresponding to the third cold channel, and then enters the second cooling channel 802. The liquid refrigerant entering the second cooling channel 802 exchanges heat with the first coil 500 and the second coil 600 outside the stator core 100, and then enters the liquid outlet channel 204 through the liquid return port 206 and flows out from the liquid outlet 202. It can be seen that in the above process, the liquid refrigerant can fully directly contact and exchange heat with the core heat-generating components such as the stator core 100, the first coil 500 and the second coil 600, thereby improving the heat dissipation efficiency of the disc motor and extending the service life of the disc motor.

[0032] The function of the separator plate 700 is to separate the first coil 500 from the second coil 600, thereby forming a third cooling channel between the first coil 500, the second coil 600, and the stator core 101. This third cooling channel dissipates heat from the stator core 101, the first coil 500, the second coil 600, and other heat-generating components surrounding the third cooling channel. The thickness of the first coil 500 and the second coil 600 can be equal or unequal. To improve the cooling effect of the stator core 100, the first coil 500 and the second coil 600 are of equal thickness.

[0033] To reduce the volume occupied by the separator 700 and increase the cross-sectional area of ​​the third cooling channel, the contact area between the stator unit 101, the first coil 500, and the second coil 600 and the third cooling channel is reduced. The separator 700 includes a first separator 701 and a second separator 702. The first separator 701 is positioned outside the stator unit 101, while the second separator 702 is positioned inside the stator unit 101. The first separator 701 and the second separator 702 are cubic structures. Any structure that can separate the first coil 500 and the second coil 600 can be considered a separator 700.

[0034] The width of the first separator 701 is greater than, equal to, or less than the outer width of the stator cells 101. As long as a third cooling channel is formed between adjacent stator cells 101, it falls within the scope of protection of the present invention. Optionally, the width of the first separator 701 can be less than the outer width of the stator cells 101. This not only reduces the material consumption of the first separator 701 but also increases the effective contact area between the stator cells 101 and the third cooling channel.

[0035] The first separator 701 is fixed on the first coil 500 and the second coil 600 , or the first separator 701 is fixed on the stator unit 101 , wherein the first separator 701 can be fixed on the first coil 500 , the second coil 600 or the stator unit 101 by bonding.

[0036] The width of the second separator 702 is greater than, equal to, or less than the internal width of the stator cells 101. As long as a third cooling channel is formed between adjacent stator cells 101, it falls within the scope of protection of the present invention. Optionally, the width of the second separator 702 can be less than the external width of the stator cells 101. This not only reduces the material consumption of the second separator 702 but also increases the effective contact area between the stator cells 101 and the third cooling channel.

[0037] The second separator 702 is fixed on the first coil 500 and the second coil 600 , or the second separator 702 is fixed on the stator unit 101 , wherein the second separator 702 can be fixed on the first coil 500 , the second coil 600 or the stator unit 101 by bonding.

[0038] It should be noted that the thickness and width can be understood in this way. Taking the stator core 100 as a whole as an example, the axial direction of the stator core 100 is the thickness, the circumferential surface of the stator core 100 is the width, the thickness of the stator monomer 101 is the distance between the upper end face and the lower end face of the stator monomer 101 in the axial direction, and the width of the stator monomer 101 is the distance between the two side faces of the stator monomer 101. Since the stator monomer 101 is a trapezoidal structure, the distance between the two side faces of the stator monomer 101 close to the axis of the stator core 100 is smaller, and the distance between the two side faces of the stator monomer 101 away from the axis of the stator core 100 is larger.

[0039] The function of the stator housing 200 is to install the stator core 100, wherein the stator housing 200 includes a stator outer shell 200-1, a stator inner shell 200-2, a front stator plate 200-3 and a rear stator plate 200-4. The stator core 100 is located between the stator outer shell and the stator inner shell 200-2. The front stator plate 200-3 is arranged on the first end face of the stator housing 200-1, and the rear stator plate 200-4 is arranged on the second end face of the stator housing 200-1. The stator housing 200-1, the outside of the stator core 100, the front stator plate 200-3 and the rear stator plate 200-4 form a first cavity 800; the stator inner shell 200-2, the inside of the stator core 100, the front stator plate 200-3 and the rear stator plate 200-4 form a second cavity 900. The above is only one structural form of the stator housing 200 . Any structure that can seal the stator core 100 can be used as the stator housing 200 . The embodiment of the present invention will not be described in detail here.

[0040] In the above structure, one or more of the liquid inlet 201, the liquid outlet 202, the liquid spray port 205 and the liquid return port 206 are provided on the stator housing 200-1, the stator inner housing 200-2, the front stator plate 200-3 or the rear stator plate 200-4. It can be understood here that the liquid inlet 201, the liquid outlet 202, the liquid spray port 205 and the liquid return port 206 can be provided on the stator housing 200-1, or on the stator inner housing 200-2, or on the front stator plate 200-3 or on the rear stator plate 200-4 at the same time; two of the liquid inlet 201, the liquid outlet 202, the liquid spray port 205 and the liquid return port 206 can be provided on the stator housing 200-1, or on the stator inner housing 200-2 at the same time. The liquid inlet 201, the liquid outlet 202, the liquid spray port 205, and the liquid return port 206 are all disposed on the stator housing 200-1, the stator housing 200-2, the front stator plate 200-3, or the rear stator plate 200-4. The liquid inlet 201, the liquid outlet 202, the liquid spray port 205, and the liquid return port 206 are all disposed on the stator housing 200-1, the stator housing 200-2, the front stator plate 200-3, or the rear stator plate 200-4. Of course, the liquid inlet 201, the liquid outlet 202, the liquid spray port 205, and the liquid return port 206 can also be disposed across multiple components. For example, a portion of the liquid inlet channel 203 can be disposed on the stator housing 200-1, a portion of the liquid inlet channel 203 can be disposed on the front stator plate 200-3, a portion of the liquid outlet channel 204 can be disposed on the stator housing 200-1, and a portion of the liquid outlet channel 204 can be disposed on the front stator plate 200-3. In the figure, the liquid inlet 201, the liquid outlet 202, the liquid spray port 205 and the liquid return port 206 are all arranged on the stator housing 200-1.

[0041] In one embodiment of the present invention, there are multiple liquid spray ports 205, and each liquid spray port 205 corresponds to the middle part of the stator monomer 101; or each liquid spray port 205 corresponds to the third cooling channel. In order to extend the residence time of the liquid refrigerant in the first cooling channel 801, the liquid spray port 205 in the present invention corresponds to the middle part of the stator monomer 101. When the liquid refrigerant enters the first cooling channel 801 through the liquid spray port 205, when the pressure is relatively high, it is first sprayed onto the stator monomer 101, and then flows to both sides under the action of reflection from the stator monomer 101, thereby extending the residence time of the liquid refrigerant in the first cooling channel 801 and improving the heat dissipation efficiency.

[0042] The stator core 100 is a segmented core or an integral core.

[0043] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0044] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A disk motor cooling structure, characterized in that: include: A stator core, wherein the stator core has a plurality of stator cells; a stator housing, the stator housing sealing the stator core; the stator housing and the exterior of the stator core forming a first cavity; the stator housing and the interior of the stator core forming a second cavity; the stator housing being provided with a liquid inlet channel, a liquid outlet channel, a liquid inlet, a liquid outlet, a liquid spray port, and a liquid return port; the liquid inlet channel connecting the liquid inlet and the liquid spray port; and the liquid outlet channel connecting the liquid outlet and the liquid return port; a first baffle plate and a second baffle plate disposed between the exterior of the stator core and the stator housing, the first baffle plate and the second baffle plate isolating the first cavity into a first cooling channel and a second cooling channel, the first cooling channel being in communication with the liquid outlet, and the second cooling channel being in communication with the liquid return port; A first coil and a second coil are provided on the stator monomer, wherein the first coil and the second coil are respectively provided on the stator monomer along the axial direction of the stator core, and the first coils on adjacent stator monomers are closely matched, and the second coils on adjacent stator monomers are closely matched; A partition plate is located between the first coil and the second coil, and a third cooling channel connecting the first cavity and the second cavity is provided between adjacent stator monomers. The third cooling channel is formed by adjacent first coils, adjacent second coils and adjacent stator monomers.

2. The disk motor cooling structure according to claim 1, characterized in that: The partition plate includes a first partition plate and a second partition plate, wherein the first partition plate is disposed outside the stator unit, and the second partition plate is disposed inside the stator unit.

3. The disk motor cooling structure according to claim 2, characterized in that: The first partition plate has a width smaller than an outer width of the stator unit.

4. The disk motor cooling structure according to claim 3, characterized in that: The first partition plate is fixed to the first coil and the second coil.

5. The disk motor cooling structure according to claim 2, characterized in that: The second partition plate has a width smaller than an inner width of the stator unit.

6. The disk motor cooling structure according to claim 5, characterized in that: The second partition plate is fixed to the first coil and the second coil.

7. The disk motor cooling structure according to claim 1, characterized in that: The stator housing includes a stator outer shell, a stator inner shell, a front stator plate and a rear stator plate. The stator core is located between the stator outer shell and the stator inner shell. The front stator plate is arranged on the first end face of the stator outer shell, and the rear stator plate is arranged on the second end face of the stator outer shell. The stator outer shell, the outside of the stator core, the front stator plate and the rear stator plate form the first cavity; the stator inner shell, the inside of the stator core, the front stator plate and the rear stator plate form the second cavity.

8. The disk motor cooling structure according to claim 7, characterized in that: One or more of the liquid inlet, the liquid outlet, the liquid spray port, and the liquid return port are disposed on the stator outer shell, the stator inner shell, the front stator plate, or the rear stator plate.

9. The disk motor cooling structure according to claim 8, characterized in that: There are multiple liquid spraying ports, and each of the liquid spraying ports corresponds to the middle portion of the stator unit.

10. The disk motor cooling structure according to any one of claims 1 to 9, characterized in that: The stator core is a segmented core.

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