Driving module cooling structure of external rotor motor

Abstract

The utility model provides a driving module cooling structure of an external rotor motor, which comprises a driver cooling seat and a plurality of driving modules, and the plurality of driving modules are circumferentially fixed on the peripheral wall of the driver cooling seat at intervals. Cooling cavities in one-to-one correspondence with the driving modules are formed in the outer wall of the driver cooling seat, an opening is formed in the outer end of each cooling cavity, and a power tube in each driving module is attached to the opening of the cooling cavity in the corresponding position and peripherally sealed with the driver cooling seat at the outer edge of the cooling cavity; a cooling liquid inlet and a cooling liquid outlet are formed in the driver cooling seat, the first cooling cavity is communicated with the cooling liquid inlet, the tail cooling cavity is communicated with the cooling liquid outlet, and every two adjacent cooling cavities are communicated through at least one cooling liquid channel; according to the utility model, the cooling effect and efficiency of the driving module in the external rotor motor can be improved, so that the driving module is prevented from being damaged due to overheating.

Description

Technical Field

[0001] The utility model relates to the technical field of outer rotor motors, in particular to a driving module cooling structure of an outer rotor motor. Background Art

[0002] The outer rotor motor is a common type of motor on the market. When the high-power, high-speed outer rotor motors on the market are working, the drive module inside the outer rotor motor will generate more heat. The cooling of the drive module inside the outer rotor motor is currently achieved by air cooling. However, the air cooling method has the disadvantage of low cooling efficiency for the drive module. In particular, when the outer rotor motor is running at high power, the drive module will have poor heat dissipation, which can easily cause overheating and damage to the drive module. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a cooling structure for a drive module of an outer rotor motor, which can improve the cooling effect and efficiency of the drive module in the outer rotor motor to avoid overheating and damage to the drive module.

[0004] The utility model provides a drive module cooling structure of an outer rotor motor, comprising a drive cooling seat and a plurality of drive modules, wherein the plurality of drive modules are fixed on the outer peripheral wall of the drive cooling seat at circumferential intervals; a cooling cavity corresponding to each drive module is arranged on the outer wall of the drive cooling seat, an opening is formed at the outer end of each cooling cavity, a power tube in each drive module is fitted at the opening of the cooling cavity at a corresponding position and is circumferentially sealed with the drive cooling seat at the outer edge of the cooling cavity; a coolant inlet and a coolant outlet are arranged on the drive cooling seat, a first cooling cavity is connected to the coolant inlet, a last cooling cavity is connected to the coolant outlet, and every two adjacent cooling cavities are connected through at least one coolant channel.

[0005] After the utility model adopts the above structure, first the coolant can flow into the first cooling cavity through the coolant inlet, and then under the action of the coolant channel, the coolant can flow through each cooling cavity in sequence and finally reach the last cooling cavity, and then the coolant can be discharged through the coolant outlet. When the coolant flows through each cooling cavity, the coolant can cool the power tube in the drive module in the form of liquid cooling, thereby improving the cooling effect and efficiency of the drive module in the outer rotor motor compared with the traditional air cooling method, so as to avoid overheating and damage to the drive module.

[0006] In a possible embodiment, an annular groove is provided on the outer side of each cooling cavity opening, a sealing ring is embedded in the annular groove, and each sealing ring is tightly sealed with the inner wall of the annular groove at the corresponding position and the end of the power tube at the corresponding position; by adopting this structure, after the driving module is fixed to the outer wall of the driver cooling seat, the end of the power tube in the driving module can squeeze the sealing ring, so that the sealing ring is tightly sealed with the inner wall of the annular groove at the corresponding position and the end of the power tube at the corresponding position, that is, the sealing ring can reliably seal the gap between the power tube and the driver cooling seat to avoid leakage of the coolant.

[0007] In a possible embodiment, each driving module is fixed to the driver cooling seat by a plurality of fasteners distributed at circumferential intervals, and each fastener is threadedly connected to the driver cooling seat; after each driving module is fixed to the driver cooling seat by the fasteners, each power tube fits with the opening of the cooling cavity at the corresponding position; by adopting this structure, each driving module can be reliably fixed to the outer wall of the driver cooling seat by a plurality of fasteners, and after the driving module is fixed to the driver cooling seat, the end of each power tube can fit with the opening of the cooling cavity at the corresponding position.

[0008] In a possible embodiment, every two adjacent cooling cavities are connected by two cooling liquid channels spaced apart in the axial direction of the driver cooling seat; by providing two cooling liquid channels spaced apart in the axial direction of the driver cooling seat between every two adjacent cooling cavities, the coolant in the previous cooling cavity can flow more quickly through the cooling liquid channel to the next cooling cavity, that is, the flow rate of the coolant can be increased, thereby improving the cooling effect on the power tube in the driver module, and can improve the uniformity of the coolant flow in the cooling cavity, so as to achieve uniform cooling of the power tube in the driver module.

[0009] In a possible embodiment, reinforcing ribs are provided on the inner bottom of each cooling cavity, both ends of each reinforcing rib are integrally connected to the inner wall of the corresponding cooling cavity, and each reinforcing rib is located between two coolant channels connected to the corresponding cooling cavity; by providing reinforcing ribs on the inner bottom of each cooling cavity, the structural strength of the driver cooling seat located at the cooling cavity can be improved to avoid breakage of the driver cooling seat; in addition, since each reinforcing rib is located between the two coolant channels connected to the corresponding cooling cavity, the reinforcing ribs can be prevented from obstructing the coolant flowing through the cooling cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a first three-dimensional structural schematic diagram of the utility model;

[0011] Figure 2 This is a second three-dimensional structural schematic diagram of the utility model;

[0012] Figure 3 It is a schematic diagram of the three-dimensional structure of the driver cooling seat;

[0013] Figure 4 It is a partial cross-sectional structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0014] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0015] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0016] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0017] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] See also Figure 1-4As shown, an embodiment of the present application discloses a drive module cooling structure of an outer rotor motor, comprising a driver cooling seat 1 and a plurality of driver modules 2, wherein the plurality of driver modules 2 are fixed on the outer peripheral wall of the driver cooling seat 1 at circumferential intervals; a cooling cavity 11 corresponding to each driver module 2 is arranged on the outer wall of the driver cooling seat 1, and an opening is formed at the outer end of each cooling cavity 11, and a power tube 21 in each driver module 2 is fitted at the opening of the cooling cavity 11 at the corresponding position and is circumferentially sealed with the driver cooling seat 1 at the outer edge of the cooling cavity 11; a coolant inlet 12 and a coolant outlet 13 are arranged on the driver cooling seat 1, the first cooling cavity 11 is connected to the coolant inlet 12, the last cooling cavity 11 is connected to the coolant outlet 13, and every two adjacent cooling cavities 11 are connected through at least one coolant channel 14.

[0019] An annular groove 15 is provided on the outer side of the opening of each cooling cavity 11, and a sealing ring 3 is embedded in the annular groove 15. Each sealing ring 3 is tightly sealed with the inner wall of the annular groove 15 at the corresponding position and the end of the power tube 21 at the corresponding position; by adopting this structure, after the driving module is fixed to the outer wall of the driver cooling seat, the end of the power tube in the driving module can squeeze the sealing ring, so that the sealing ring is tightly sealed with the inner wall of the annular groove at the corresponding position and the end of the power tube at the corresponding position, that is, the sealing ring can reliably seal the gap between the power tube and the driver cooling seat to avoid leakage of the coolant.

[0020] Each driving module 2 is fixed to the driver cooling seat 1 by a plurality of fasteners 22 distributed at circumferential intervals, and each fastener 22 is threadedly connected to the driver cooling seat 1; after each driving module 2 is fixed to the driver cooling seat 1 by the fasteners 22, each power tube 21 fits with the opening of the cooling cavity 11 at the corresponding position; by adopting this structure, each driving module can be reliably fixed to the outer wall of the driver cooling seat by a plurality of fasteners, and after the driving module is fixed to the driver cooling seat, the end of each power tube can fit with the opening of the cooling cavity at the corresponding position.

[0021] Every two adjacent cooling chambers 11 are connected by two cooling liquid channels 14 spaced apart along the axial direction of the driver cooling seat 1; by setting two cooling liquid channels spaced apart along the axial direction of the driver cooling seat between every two adjacent cooling chambers, the coolant in the previous cooling chamber can flow more quickly through the cooling liquid channel to the next cooling chamber, that is, the flow rate of the coolant can be increased, thereby improving the cooling effect on the power tube in the driver module, and can improve the uniformity of the coolant flow in the cooling chamber, so as to achieve uniform cooling of the power tube in the driver module.

[0022] A reinforcing rib 16 is provided on the inner bottom of each cooling cavity 11, and both ends of each reinforcing rib 16 are connected to the inner wall of the corresponding cooling cavity 11, and each reinforcing rib 16 is located between two coolant channels 14 connected to the corresponding cooling cavity 11; by providing reinforcing ribs on the inner bottom of each cooling cavity, the structural strength of the driver cooling seat located in the cooling cavity can be improved to avoid the driver cooling seat from breaking; in addition, since each reinforcing rib is located between two coolant channels connected to the corresponding cooling cavity, the reinforcing rib can be prevented from obstructing the coolant flowing through the cooling cavity.

[0023] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A cooling structure for a drive module of an outer rotor motor, characterized in that: The invention comprises a driver cooling seat (1) and a plurality of driver modules (2), wherein the plurality of driver modules (2) are fixed on the outer peripheral wall of the driver cooling seat (1) at circumferential intervals; a cooling cavity (11) corresponding to each of the driver modules (2) is arranged on the outer wall of the driver cooling seat (1); an outer end of each of the cooling cavities (11) forms an opening; a power tube (21) in each of the driver modules (2) fits in the opening of the cooling cavity (11) at a corresponding position and is circumferentially sealed with the driver cooling seat (1) at the outer edge of the cooling cavity (11); a coolant inlet (12) and a coolant outlet (13) are arranged on the driver cooling seat (1); the first cooling cavity (11) is connected to the coolant inlet (12), the last cooling cavity (11) is connected to the coolant outlet (13), and every two adjacent cooling cavities (11) are connected via at least one coolant channel (14).

2. The cooling structure of the drive module of the outer rotor motor according to claim 1, characterized in that: An annular groove (15) is provided on the outer side of the opening of each cooling cavity (11), a sealing ring (3) is embedded in the annular groove (15), and each sealing ring (3) is tightly sealed with the inner wall of the annular groove (15) at a corresponding position and the end of the power tube (21) at a corresponding position.

3. The drive module cooling structure of the outer rotor motor according to claim 1 or 2, characterized in that: Each of the drive modules (2) is fixed to the driver cooling seat (1) via a plurality of fasteners (22) distributed at circumferential intervals, and each of the fasteners (22) is threadedly connected to the driver cooling seat (1); after each of the drive modules (2) is fixed to the driver cooling seat (1) via the fasteners (22), each of the power tubes (21) fits with an opening of the cooling cavity (11) at a corresponding position.

4. The drive module cooling structure of the outer rotor motor according to claim 1, characterized in that: Every two adjacent cooling chambers (11) are connected via two cooling liquid channels (14) spaced apart and distributed along the axial direction of the driver cooling seat (1).

5. The cooling structure of the drive module of the outer rotor motor according to claim 4, characterized in that: A reinforcing rib (16) is provided on the inner bottom of each cooling cavity (11), both ends of each reinforcing rib (16) are integrally connected to the inner wall of the corresponding cooling cavity (11), and each reinforcing rib (16) is located between two coolant channels (14) connected to the corresponding cooling cavity (11).

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