Integrated motor controller heat dissipation structure
By fixing the hub motor and sealed box into one, and synchronous heat discharge through the heat dissipation channel and heat dissipation hole, the problem of difficulty in dissipating heat by existing motors and controllers is solved, and the heat dissipation performance and structural compactness are improved.
Patent Information
- Application Number
- CN202421811665.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-07-30
AI Technical Summary
The split design of existing motors and controllers leads to difficulty in dissipating heat and is prone to over-temperature damage. At the same time, the dispersed heat dissipation system takes up a large space and is not compact enough.
The integrated motor controller heat dissipation structure is adopted to connect the hub motor and the sealed box through a fixed shaft to form a heat dissipation channel, and the heat from the motor and controller is discharged simultaneously through the heat dissipation channel and the heat dissipation hole.
It realizes rapid heat dissipation of the motor and controller, reduces the temperature during operation, extends the service life, and reduces space occupation, making the structure more compact.
Smart Images
Figure CN223039829U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motor heat dissipation devices, in particular to an integrated motor controller heat dissipation structure. Background Art
[0002] The controller is the core component for controlling the operation of the motor. The controllers and motors of most scooters on the market adopt a split design, that is, the motor and controller are separately installed inside the vehicle body. However, in order to improve the dust and water resistance of the motor and controller, the controller and motor are sealed and installed inside the vehicle body. This sealed installation method will generate a lot of heat when the motor and controller are running. The heat of the motor and controller is difficult to be discharged from the vehicle body, which makes the controller and motor easily damaged by overheating. In particular, high-power controllers are installed inside, and the heat dissipation problem is difficult to solve, resulting in damage to the controller due to excessive temperature. In addition, the split-installed motor and controller need to use two separate cooling systems for heat dissipation. The assembly space of the vehicle body is occupied extra due to multiple cooling systems, making the structure not compact enough and in urgent need of improvement. Utility Model Content
[0003] The utility model aims to provide an integrated motor controller heat dissipation junction, which has the effects of improving heat dissipation performance, reducing space occupation and making the structure more compact.
[0004] The above technical purpose of the utility model is achieved through the following technical solutions: an integrated motor controller heat dissipation structure, including a wheel hub motor and a sealed box that are fixedly connected, the wheel hub motor includes a stator bracket, a controller is arranged in the sealed box, a heat dissipation channel is connected between the wheel hub motor and the sealed box, and the sealed box is provided with heat dissipation holes for discharging heat from its inner cavity.
[0005] By adopting the above technical scheme, the utility model fixes the controller and the wheel hub motor together to form an integrated structure for assembly on the vehicle body. When the motor is running, the heat generated by the motor can flow into the inner cavity of the sealed box through the heat dissipation channel. The heat generated by the controller in the inner cavity is discharged to the outside atmosphere through the heat dissipation holes on the sealed box together with the heat generated by the motor flowing in from the heat dissipation channel. In this way, rapid heat dissipation of the motor and the controller can be achieved. Different from the way that the wheel hub motor and the controller on the market adopt two separate heat dissipation systems, the utility model fixes the sealed box equipped with the controller and the wheel hub motor into one body, and connects the inner cavities of the two through the heat dissipation channel, so that the heat generated by the wheel hub motor enters the sealed box through the heat dissipation channel and is discharged from the heat dissipation holes together with the heat generated by the controller for synchronous heat dissipation, thereby reducing the temperature generated when the motor and the controller are in operation, thereby protecting the motor and the controller and extending their service life, and having the effects of improving heat dissipation performance, reducing space occupancy and making the structure more compact.
[0006] A further setting of the present utility model is that a one-way exhaust device is provided at the outlet end of the heat dissipation hole of the sealed box, and the heat in the inner cavity of the sealed box is discharged to the outside of the sealed box through the one-way exhaust device.
[0007] By adopting the above technical solution, the heat in the sealed box can be discharged to the external atmosphere through the heat dissipation hole and the one-way exhaust device in sequence. At the same time, the setting of the one-way exhaust device can prevent external water vapor or dust from entering the sealed box, improving the dust and waterproof performance of the present utility model.
[0008] A further setting of the present utility model is that the one-way exhaust device is set as a one-way exhaust valve fixedly connected to the sealed box and communicating with the heat dissipation hole.
[0009] A further setting of the present utility model is that the stator bracket includes a fixed shaft, the heat dissipation channel is opened on the fixed shaft, and one end of the heat dissipation channel communicates with the inner cavity of the hub motor, and the other end of the heat dissipation channel communicates with the inner cavity of the sealed box.
[0010] By adopting the above technical solution, the sealed box is fixedly connected to the sealed box through the fixed shaft, improving the connection stability between the hub motor and the sealed box. And the heat dissipation channel is opened on the fixed shaft, with a reasonable structural design, without the need for additional heat dissipation pipelines, improving the structural compactness of the present utility model.
[0011] A further setting of the present utility model is that the sealed box includes an inner shell and an outer cover, and a first sealing ring is provided between the inner shell and the outer cover.
[0012] By adopting the above technical solution, the sealed box can be disassembled and assembled, making the disassembly and assembly of the controller more convenient. And the addition of the first sealing ring can improve the connection sealing performance between the inner shell and the outer cover, effectively preventing external water vapor and dust from entering the sealed box.
[0013] A further setting of the present utility model is that the controller is provided with a heat dissipation plate, and the heat dissipation plate is used to dissipate the heat generated by the controller to the inner cavity of the sealed box.
[0014] By adopting the above technical solution, the heat generated by the controller can be quickly dissipated to the inner cavity of the sealed box through the heat dissipation plate and discharged to the outside atmosphere through the heat dissipation hole, which is beneficial to quickly dissipate the heat of the heat dissipation plate.
[0015] A further setting of the present utility model is that the hub motor is provided with a brake pad, and heat dissipation fins are attached to the side wall of the brake pad.
[0016] By adopting the above technical solution, when the vehicle body brakes, the brake pads will generate heat. At this time, the heat sinks attached to the side walls of the brake pads can quickly dissipate heat from the brake pads, preventing the situation that continuous braking causes the brake pads to overheat and reduces the braking performance.
[0017] A further setting of the present utility model is that: the sealed box is connected with a power cord, the sealed box is provided with a wire passing hole corresponding to the power cord, and a second sealing ring is arranged between the power cord and the wire passing hole.
[0018] By adopting the above technical solution, the power cord passes through the wire passing hole on the sealed box and penetrates into the sealed box to energize the controller. The second sealing ring can improve the sealing performance between the sealed wire and the wire passing hole, preventing external water vapor or dust from entering the sealed box through the gap between the two, causing the controller to short-circuit or attach to the surface of the controller and affecting the heat dissipation performance.
[0019] A further setting of the present utility model is that: the material of the sealed box is set as aluminum material.
[0020] By adopting the above technical solution, by utilizing the light weight and high thermal conductivity of the aluminum material, the overall weight of the vehicle body can be reduced, and at the same time, the sealed box can quickly transfer the heat in its inner cavity to the external air flow, improving the heat dissipation performance of the sealed box.
[0021] A further setting of the present utility model is that: a plurality of heat dissipation fins are integrally arranged on the outer wall of the sealed box close to the controller side.
[0022] By adopting the above technical solution, part of the heat generated by the controller is transferred to the sealed box. The heat dissipation fins arranged close to the controller can increase the effective contact area between the sealed box and the external atmosphere, and the heat absorbed by the sealed box can be quickly dissipated and cooled through the plurality of heat dissipation fins.
[0023] To sum up, the present utility model has the following beneficial effects:
[0024] Adopt a structure in which the hub motor and the sealed box are fixedly connected into an integral structure through a fixed shaft, a heat dissipation channel communicating the inner cavities of the sealed box and the hub motor is opened on the fixed shaft, a controller is arranged in the sealed box, heat dissipation holes communicating its inner cavity are penetrated through the outer wall of the sealed box, and a one-way exhaust device is arranged at the outlet end of the heat dissipation holes, so that the heat generated by the hub motor enters the sealed box through the heat dissipation channel and is discharged from the heat dissipation holes together with the heat generated by the controller for synchronous heat dissipation, thereby reducing the temperature generated during the operation of the motor and the controller, achieving the purpose of protecting the motor and the controller and prolonging their service lives, and having the effects of improving the heat dissipation performance, reducing the space occupation and making the structure more compact. Description of the Drawings
[0025] Figure 1 is the structural diagram of the present utility model.
[0026] Figure 2 This is a cross-sectional view of the present utility model at the heat dissipation channel position.
[0027] Figure 3 This is an exploded view of the present utility model.
[0028] In the figure: 1, hub motor; 10, rotor bracket; 11, stator bracket; 111, fixed shaft; 111a, heat dissipation channel; 12, brake pad; 13, heat sink; 2, sealed box; 201, inner shell; 2011, heat dissipation fin; 202, outer cover; 2a, heat dissipation hole; 2b, wire passing hole; 21, one-way exhaust device; 22, first sealing ring; 23, power cord; 24, second sealing ring; 3, controller; 31, heat dissipation plate; 4, tire; 5, brake caliper. Specific embodiments
[0029] The present utility model will be further described below with reference to the accompanying drawings.
[0030] An integrated motor controller heat dissipation structure, as Figure 1-2 shown, includes a hub motor 1 and a sealed box 2 fixedly connected. The hub motor 1 includes a stator bracket 11 and a rotor bracket 10. A tire 4 is sleeved outside the rotor bracket 10. A controller 3 is provided in the sealed box 2. A heat dissipation channel 111a is communicated between the hub motor 1 and the sealed box 2. The sealed box 2 is provided with a heat dissipation hole 2a for discharging the heat in its inner cavity. The stator bracket 11 includes a fixed shaft 111. The heat dissipation channel 111a is opened on the fixed shaft 111. One end of the heat dissipation channel 111a is communicated with the inner cavity of the hub motor 1, and the other end of the heat dissipation channel 111a is communicated with the inner cavity of the sealed box 2. The sealed box 2 is fixedly connected to the sealed box 2 through the fixed shaft 111, improving the connection stability between the hub motor 1 and the sealed box 2. And the heat dissipation channel 111a is opened on the fixed shaft 111, with a reasonable structural design, without the need for additional heat dissipation pipelines to be pulled, improving the structural compactness of the present utility model.
[0031] As Figure 2-3As shown, a one-way exhaust device 21 is provided at the outlet end of the heat dissipation hole 2a of the sealed box 2. The heat in the inner cavity of the sealed box 2 is discharged to the outside of the sealed box 2 through the one-way exhaust device 21. The heat in the sealed box 2 can be discharged to the external atmosphere through the heat dissipation hole 2a and the one-way exhaust device 21 in sequence. At the same time, the setting of the one-way exhaust device 21 can prevent external water vapor or dust from entering the sealed box 2, improving the dust and water resistance of the present utility model; the one-way exhaust device 21 is set as a one-way exhaust valve fixedly connected to the sealed box 2 and communicating with the heat dissipation hole 2a. In other embodiments, the one-way exhaust device 21 can be set as a breathing membrane or other devices with one-way exhaust function; the hub motor 1 is provided with a brake pad 12, and a brake caliper 5 is fixedly arranged outside the sealed box 2. The brake caliper 5 is used to brake the brake pad 12. A heat sink 13 is attached to the side wall of the brake pad 12. When the vehicle brakes, heat will be generated on the brake pad 12. At this time, the heat sink 13 attached to the side wall of the brake pad 12 can quickly dissipate heat from the brake pad 12, preventing the situation that continuous braking causes the brake pad 12 to overheat and reduce the braking performance.
[0032] As Figure 1-3As shown in the figure, the sealed box 2 includes an inner shell 201 and an outer cover 202. A first sealing ring 22 is provided between the inner shell 201 and the outer cover 202, enabling the disassembly and assembly of the sealed box 2, making it more convenient to disassemble and assemble the controller 3. Moreover, the addition of the first sealing ring 22 can improve the connection sealing performance between the inner shell 201 and the outer cover 202, effectively preventing external water vapor and dust from entering the sealed box 2. The controller 3 is provided with a heat dissipation plate 31, which is used to dissipate the heat generated by the controller 3 into the inner cavity of the sealed box 2. The heat generated by the controller 3 can be quickly dissipated into the inner cavity of the sealed box 2 through the heat dissipation plate 31 and discharged into the external atmosphere through the heat dissipation holes 2a, which is beneficial to quickly dissipate the heat of the heat dissipation plate 31. The sealed box 2 is connected with a power cord 23. The sealed box 2 is provided with a wire passing hole 2b corresponding to the power cord 23. A second sealing ring 24 is provided between the power cord 23 and the wire passing hole 2b. The power cord 23 passes through the wire passing hole 2b on the sealed box 2 to supply power to the controller 3. The second sealing ring 24 can improve the sealing performance between the sealed wire and the wire passing hole 2b, preventing external water vapor or dust from entering the sealed box 2 through the gap between the two, causing a short circuit of the controller 3 or attaching to the surface of the controller 3 and affecting the heat dissipation performance. The material of the sealed box 2 is set as aluminum material. By utilizing the light weight and high thermal conductivity of the aluminum material, the overall weight of the vehicle body can be reduced. At the same time, the sealed box 2 can quickly transfer the heat in its inner cavity to the external air flow, improving the heat dissipation performance of the sealed box 2. A plurality of heat dissipation fins 2011 are integrally provided on the outer wall of the sealed box 2 close to the controller 3. In this embodiment, the material of the heat dissipation fins 2011 also adopts aluminum material. Part of the heat generated by the controller 3 is transferred to the sealed box 2. The heat dissipation fins 2011 arranged close to the controller 3 can increase the effective contact area between the sealed box 2 and the external atmosphere. The heat absorbed by the sealed box 2 can be quickly dissipated and cooled through the plurality of heat dissipation fins 2011. In addition, in other embodiments, the heat dissipation medium in the sealed box 2 can also adopt the water-cooled heat dissipation form of coolant, and heat dissipation is achieved through an external liquid circulation system.
[0033] The basic working principle of the present utility model is as follows: The controller 3 and the hub motor 1 of the present utility model are fixedly connected to form an integrated structure for assembly on the vehicle body. When the motor operates, the heat generated by the motor can flow into the inner cavity of the sealed box 2 through the heat dissipation channel 111a. The heat generated by the controller 3 in the inner cavity and the heat generated by the motor flowing in from the heat dissipation channel 111a are discharged to the outside atmosphere together through the heat dissipation holes 2a on the sealed box 2. In this way, rapid heat dissipation of the motor and the controller 3 can be achieved. Different from the way that the hub motor 1 and the controller 3 on the market adopt two separate heat dissipation systems, the present utility model fixes the sealed box 2 containing the controller 3 and the hub motor 1 into one body, and connects the inner cavities of the two through the heat dissipation channel 111a, so that the heat generated by the hub motor 1 enters the sealed box 2 through the heat dissipation channel 111a and is discharged together with the heat generated by the controller 3 through the heat dissipation holes 2a for synchronous heat dissipation, thereby reducing the temperature generated during the operation of the motor and the controller 3, achieving the purpose of protecting the motor and the controller 3 and extending their service life, and having the effects of improving the heat dissipation performance, reducing the space occupation and making the structure more compact.
[0034] The above description is only a preferred embodiment of the present utility model. Therefore, any equivalent changes or modifications made according to the structure, features and principles described in the scope of the patent application of the present utility model are included in the scope of the patent application of the present utility model.
Claims
1. An integrated motor controller heat dissipation structure, characterized in that: The invention comprises a wheel hub motor (1) and a sealing box (2) which are fixedly connected, the wheel hub motor (1) comprising a stator bracket (11), a controller (3) being arranged inside the sealing box (2), a heat dissipation channel (111a) being arranged between the wheel hub motor (1) and the sealing box (2), and a heat dissipation hole (2a) being arranged to discharge heat from its inner cavity.
2. The integrated motor controller heat dissipation structure according to claim 1, characterized in that: The sealed box (2) is provided with a one-way exhaust device (21) at the outlet end of the heat dissipation hole (2a), and the heat in the inner cavity of the sealed box (2) is discharged to the outside of the sealed box (2) through the one-way exhaust device (21).
3. The integrated motor controller heat dissipation structure according to claim 2, characterized in that: The one-way exhaust device (21) is configured as a one-way exhaust valve fixedly connected to the sealing box (2) and in communication with the heat dissipation hole (2a).
4. The integrated motor controller heat dissipation structure according to claim 1, characterized in that: The stator support (11) comprises a fixed shaft (111), the heat dissipation channel (111a) is opened on the fixed shaft (111), one end of the heat dissipation channel (111a) is communicated with the inner cavity of the hub motor (1), and the other end of the heat dissipation channel (111a) is communicated with the inner cavity of the sealing box (2).
5. The integrated motor controller heat dissipation structure according to claim 1, characterized in that: The sealed box (2) comprises an inner shell (201) and an outer cover (202), and a first sealing ring (22) is provided between the inner shell (201) and the outer cover (202).
6. The integrated motor controller heat dissipation structure according to claim 1, characterized in that: The controller (3) is provided with a heat dissipation plate (31), and the heat dissipation plate (31) is used to dissipate the heat generated by the controller (3) into the inner cavity of the sealed box (2).
7. The integrated motor controller heat dissipation structure according to claim 1, characterized in that: The wheel hub motor (1) is provided with a brake pad (12), and a heat sink (13) is attached to the side wall of the brake pad (12).
8. The integrated motor controller heat dissipation structure according to claim 1, characterized in that: The sealing box (2) is connected to a power line (23), the sealing box (2) is provided with a threading hole (2b) corresponding to the power line (23), and a second sealing ring (24) is provided between the power line (23) and the threading hole (2b).
9. The integrated motor controller heat dissipation structure according to claim 1, characterized in that: The material of the sealing box (2) is aluminum.
10. The integrated motor controller heat dissipation structure according to claim 9, characterized in that: A plurality of heat dissipation fins (2011) are integrally provided on the outer wall of the sealed box (2) on the side close to the controller (3).