Heat dissipation structure and heat dissipation method of mobile robot controller

Abstract

The invention discloses a heat dissipation structure and heat dissipation method of a mobile robot controller, and the structure comprises a housing which is provided with an external heat dissipation fin group and an external heat dissipation fan installation part, and the external heat dissipation fin group comprises a plurality of external heat dissipation fins; a heat dissipation fan mounted on the external heat dissipation fan mounting part; the external heat dissipation fin cover plate is connected with the external heat dissipation fin group, an air inlet channel is formed in the part, corresponding to the external heat dissipation fan mounting part, of the external heat dissipation fin cover plate, and an external heat dissipation fin duct is formed between any two adjacent external heat dissipation fins; the heat dissipation fan is started, external air is sucked in from the air inlet channel, the air is accelerated by the heat dissipation fan and then blown to the outer surface of the shell, then flows to the air inlet of the external heat dissipation fin duct, and is exhausted from the air outlet of the external heat dissipation fin duct after flowing through the external heat dissipation fin duct; the heat dissipation structure meets the requirements of a heat dissipation structure of a current mobile robot controller, and meanwhile, the heat dissipation structure is good in heat dissipation effect, small in size, light in weight and suitable for limited installation space.

Description

Technical Field

[0001] The present invention relates to the field of heat dissipation of mobile robot controllers, and particularly to a heat dissipation structure and a heat dissipation method for a mobile robot controller. Background Art

[0002] The mobile robot controller is the core control device for the intelligent transformation of the mobile robot platform. At present, in order to provide more accurate movement and control accuracy for most mobile robot controllers, more and more sensors need to be externally connected for environmental perception and measurement. Therefore, more modules need to be integrated inside the controller, resulting in an increasing heat generation of the controller and higher requirements for heat dissipation.

[0003] In the mobile robot application platform, to ensure the waterproof performance inside the platform, it is mostly enclosed and limited inside. To improve the heat dissipation efficiency as much as possible in the limited space, it is necessary to make full use of the heat conduction ability of the medium in the space. The existing mobile robot controllers rely mainly on the built-in fan to stir the internal air and the heat conduction of the shell metal or install water-cooled heat dissipation to ensure a certain degree of waterproof and dustproof performance. However, pure shell heat dissipation in a closed space will cause uneven heat distribution, with a large amount of heat adhering to the shell surface; water-cooled heat dissipation requires an additional device to promote the liquid flow, and adding a device means more space is needed.

[0004] With the increasing heat generation of the mobile robot controller and higher requirements for heat dissipation, the existing heat dissipation structures can no longer meet the current requirements of achieving good heat dissipation effect, small volume, light weight, and adapting to limited installation space. Summary of the Invention

[0005] To solve the technical problems in the background art, an object of the present invention is to propose a heat dissipation structure for a mobile robot controller, which meets the current requirements of achieving good heat dissipation effect, small volume, light weight, and adapting to limited installation space.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A heat dissipation structure for a mobile robot controller, comprising:

[0008] A housing 1, the housing 1 is provided with an external heat dissipation fin group 12 and an external heat dissipation fan mounting part 13, and the external heat dissipation fin group 12 includes a plurality of external heat dissipation fins 121;

[0009] A heat dissipation fan 3, the heat dissipation fan 3 is installed on the external heat dissipation fan mounting part 13, the side of the heat dissipation fan 3 away from the housing 1 is the air inlet surface 3A, and the side of the heat dissipation fan 3 close to the housing 1 is the air outlet surface 3B;

[0010] External heat dissipation fin cover plate 4, the external heat dissipation fin cover plate 4 is connected to the external heat dissipation fin group 12. A part of the external heat dissipation fin cover plate 4 corresponding to the external heat dissipation fan installation part 13 is provided with an air inlet channel 41. An external heat dissipation fin duct 123 is formed between the external heat dissipation fin cover plate 4 and any two adjacent external heat dissipation fins 121. One end of the external heat dissipation fin duct 123 close to the external heat dissipation fan installation part 13 is the air inlet, and one end of the external heat dissipation fin duct 123 far from the external heat dissipation fan installation part 13 is the air outlet.

[0011] Preferably, the external heat dissipation fin duct 123 is arranged around the external heat dissipation fan installation part 13.

[0012] Preferably, the external heat dissipation fin duct 123 starts from the edge of the external heat dissipation fan installation part 13 and extends outward in the horizontal or vertical direction.

[0013] Preferably, the external heat dissipation fan installation part 13 is not ventilated with the inner surface of the housing 1.

[0014] Preferably, the height of the external heat dissipation fins 121 is higher than the installation height of the heat dissipation fan 3.

[0015] Preferably, the air inlet channel 41 includes a mesh hollow structure.

[0016] Preferably, a number of fin top internal thread mounting holes 124 are provided at the top of the external heat dissipation fin group 12, and a number of fin cover plate internal thread mounting through holes 42 corresponding to the fin top internal thread mounting holes 124 one by one are provided on the external heat dissipation fin cover plate 4.

[0017] Preferably, the heat dissipation fan 3 is an ultra-thin waterproof fan.

[0018] Preferably, it further includes: a circuit board 2, and the circuit board 2 is connected to the housing 1.

[0019] Preferably, the housing 1 is provided with an internal heat conduction block 11, the circuit board 2 is provided with a main electrical heat source part 21, and the main electrical heat source part 21 is in direct contact with the internal heat conduction block 11.

[0020] Another object of the present invention is to propose a heat dissipation method for a mobile robot controller using the heat dissipation structure of the above-mentioned mobile robot controller, which has good heat dissipation effect and meets the requirements of limited installation space.

[0021] To achieve the above object, the present invention provides the following technical solutions:

[0022] Start the heat dissipation fan 3, suck external gas from the air inlet channel 41, the gas is accelerated by the heat dissipation fan 3 and then blows against the outer surface of the housing 1, and then flows to the air inlet of the external heat dissipation fin duct 123, and is discharged from the air outlet of the external heat dissipation fin duct 123 after flowing through the external heat dissipation fin duct 123.

[0023] The beneficial effects of the heat dissipation structure of a mobile robot controller of the present invention are:

[0024] 1. To meet the increasing heat generation and heat dissipation requirements of current mobile robot controllers, by adding ducts, smaller fans and shorter fins can be used with the same heat dissipation capacity, and at the same time have the following characteristics: (1) High heat dissipation efficiency and good effect, suitable for mobile robot controllers with large heat generation; (2) The heat dissipation structure is small in size and light in weight, which will not add a lot of space and weight burden to the mobile robot controller; (3) The ingenious structural design can adapt to the limited installation space requirements of the mobile robot controller; (4) The design of the external heat dissipation fin cover and the air inlet channel can, on the one hand, ensure that the cooling fan can inhale air normally, and on the other hand, protect the external heat dissipation fin group to prevent foreign objects or human body parts from damaging the external heat dissipation fin group.

[0025] 2. When the cooling fan is powered on, the external air will enter from the air inlet channel of the external cooling fin cover plate under the suction force, blow to the outer shell surface after being accelerated by the cooling fan, and then flow to the air inlet of the external cooling fin duct, and be discharged from the air outlet of the external cooling fin duct after passing through the external cooling fin duct. When heat dissipation is required, the temperature of the external air is low, and the temperature of the controller's own structure such as the external cooling fins and the outer shell surface is high. During the entire flow process mentioned above, the external air can take away the heat of the controller's own structure such as the external cooling fin surface and the outer shell surface, and achieve the purpose of heat dissipation by continuously sucking the external air through the external cooling fin duct and then discharging it. After the cooling fan blows the air to the outer shell surface, it is immediately passively introduced into the duct inlet. The gas at the duct inlet is affected by the Bernoulli principle. The pressure difference between the duct inlet and the duct outlet causes more air to pass through the duct, which can further improve the heat dissipation efficiency. In this process, most of the surface of each fin can be fully in contact with the flowing air. The increase in the number of fins themselves and the contact area with the flowing air can further improve the heat dissipation efficiency. Moreover, if it is in a closed environment, the cooling fan drives the gas in the closed space to circulate back and forth, which can promote the uniform dispersion of heat in the limited space.

[0026] The beneficial effects of a mobile robot controller heat dissipation method using the heat dissipation structure of the mobile robot controller of the present invention are as follows:

[0027] 1. Heat dissipation is achieved by sucking external air through a heat dissipation fan and flowing it through an external heat dissipation fin duct. Compared with the existing method that relies on an internal fan to stir the internal air and the heat conduction of the metal shell, the heat dissipation efficiency is significantly improved. Under the same heat dissipation capacity, a smaller fan and shorter fins can be used, and the heat dissipation effect is good. Compared with the existing method that relies on an internal fan to stir the internal air and installs water-cooled heat dissipation at the same time, there is no need to introduce bulky water-cooled heat dissipation equipment, and it is small in size and light in weight, which better meets the requirements of various limited installation spaces in the application of mobile robot controllers. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic structural diagram of the inner side of the housing of the present invention;

[0029] Figure 2 It is a schematic structural diagram of the circuit board of the present invention;

[0030] Figure 3 It is a schematic structural diagram of the outer side of the housing of the present invention;

[0031] Figure 4 It is a schematic structural diagram of the disassembled external heat dissipation fin cover, heat dissipation fan and housing of the present invention;

[0032] Figure 5 It is a schematic structural diagram of the assembled external heat dissipation fin cover, heat dissipation fan and housing of the present invention;

[0033] Figure 6 It is a schematic diagram of the height relationship between the external heat dissipation fins and the heat dissipation fan after the present invention is assembled;

[0034] Figure 7 It is a schematic structural diagram of the assembled heat dissipation fan and housing of the present invention;

[0035] In the figure: housing 1, internal heat conduction block 11, external heat dissipation fin group 12, external heat dissipation fin 121, external heat dissipation fin exhaust passage 122, external heat dissipation fin duct 123, internal threaded mounting hole 124 at the top of the fin, external heat dissipation fan mounting part 13, circuit board 2, main electrical heat source part 21, heat dissipation fan 3, air inlet surface 3A, air outlet surface 3B, external heat dissipation fin cover 4, air inlet channel 41, internal threaded mounting through hole 42 of the fin cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] Embodiment 1

[0038] As Figures 1-7 shown, a heat dissipation structure of a mobile robot controller according to the present invention includes:

[0039] A housing 1, the housing 1 is provided with an external heat dissipation fin group 12 and an external heat dissipation fan mounting portion 13. The external heat dissipation fin group 12 includes a plurality of external heat dissipation fins 121; an external heat dissipation fin exhaust passage 122 is formed between any two adjacent external heat dissipation fins 121;

[0040] A heat dissipation fan 3, the heat dissipation fan 3 is mounted on the external heat dissipation fan mounting portion 13. The side of the heat dissipation fan 3 away from the housing 1 is the air inlet surface 3A, and the side of the heat dissipation fan 3 close to the housing 1 is the air outlet surface 3B;

[0041] An external heat dissipation fin cover plate 4, the external heat dissipation fin cover plate 4 is connected to the external heat dissipation fin group 12. A part of the external heat dissipation fin cover plate 4 corresponding to the external heat dissipation fan mounting portion 13 is provided with an air inlet passage 41. An external heat dissipation fin duct 123 is formed between the external heat dissipation fin cover plate 4 and any two adjacent external heat dissipation fins 121. One end of the external heat dissipation fin duct 123 close to the external heat dissipation fan mounting portion 13 is the air inlet, and one end of the external heat dissipation fin duct 123 away from the external heat dissipation fan mounting portion 13 is the air outlet.

[0042] When the heat dissipation fan 3 is powered on and starts, the external gas is sucked and enters from the air inlet passage 41 of the external heat dissipation fin cover plate 4, is accelerated by the heat dissipation fan 3 and then blows to the surface of the housing 1, and then flows to the air inlet of the external heat dissipation fin duct 123, and is discharged from the air outlet of the external heat dissipation fin duct 123 after passing through the external heat dissipation fin duct 123. In the case of heat dissipation required, the temperature of the external gas is relatively low, and the temperature of the controller's own structures such as the external heat dissipation fins 121 and the surface of the housing 1 is relatively high. During the above entire flow process, the external gas can take away the heat of the controller's own structures such as the surface of the external heat dissipation fins 121 and the surface of the housing 1, and achieve the purpose of heat dissipation by continuously sucking the external gas to flow through the external heat dissipation fin duct 123 and then discharging it. After the heat dissipation fan 3 blows the air to the surface of the housing 1, it is immediately passively introduced into the air inlet of the duct. Due to the Bernoulli principle, the pressure difference between the air inlet and the air outlet of the duct causes more air to pass through the duct, which can further improve the heat dissipation efficiency. During this process, most of the surface of each fin can be fully in contact with the flowing air, and the increase in the number of fins itself and the contact area with the flowing air can further improve the heat dissipation efficiency. Moreover, if in a closed environment, the heat dissipation fan 3 drives the gas in the closed space to circulate reciprocally, which can promote the uniform dispersion of heat in the limited space.

[0043] Specifically, the external heat dissipation fin exhaust passage 122 and the external heat dissipation fin duct 123 are arranged around the external heat dissipation fan mounting portion 13.

[0044] The setting of this duct structure is equivalent to embedding the cooling fan 3 inside the external cooling fin group 12, without additional installation space, and is more suitable for the requirements of various limited installation spaces in the application of mobile robot controllers. At the same time, it is convenient for the cooling fan 3 to passively introduce the air into the duct air inlet immediately after blowing the air to the surface of the housing 1, improving the efficiency of gas introduction and the overall heat dissipation effect.

[0045] Specifically, the external cooling fin duct 123 starts from the edge of the external cooling fan installation part 13 and extends outward horizontally or vertically.

[0046] The setting of this duct structure can form several fin ducts around the external cooling fan installation part 13 in the four directions of up, down, left, and right. The fin ducts are also exhaust passages, and there are at least three benefits: (1) It is convenient for the cooling fan 3 to passively introduce the air into the duct air inlet immediately after blowing the air to the surface of the housing 1, improving the efficiency of gas introduction and the overall heat dissipation effect; (2) The horizontal or vertical direction is relative to the housing 1 and matches the horizontal or vertical edge of the surface of the housing 1, which can make full use of the surface space, set more ducts, increase the heat exchange gas flow channels, and increase the contact area between the heat exchange gas and the fins and the outer surface of the housing 1, improving the heat dissipation effect; (3) The horizontal or vertical external cooling fin duct 123 is convenient to process and has a low manufacturing cost.

[0047] Specifically, the external cooling fan installation part 13 is not ventilated with the inner surface of the housing 1.

[0048] The external cooling fan installation part 13 is not ventilated with the inner surface of the housing 1. For example, the external cooling fan installation part 13 is not provided with ventilation holes passing through the housing 1 and directly communicating with the inner cavity of the controller. On the one hand, this can ensure that the cooling fan 3 passively introduces the air into the duct inlet immediately after blowing the air to the surface of the housing 1 (instead of entering or partially entering the inside of the controller), improving the speed of gas flow and the heat dissipation efficiency. On the other hand, it can also prevent external gas from directly entering the inner cavity of the controller and directly damaging the internal structure or affecting the service life of internal components, such as bringing in water vapor to cause corrosion of internal components and airflow blowing into the inside to damage the internal electrical contacts of the controller.

[0049] Specifically, the height of the external cooling fins 121 is higher than the installation height of the cooling fan 3.

[0050] With this structure, the highest point of the cooling fan 3 does not exceed the height of the fins, and no additional installation space is added, which is more adaptable to various limited installation space requirements in mobile robot controller applications. At the same time, it can ensure that the cooling fan 3 can be completely placed under the external cooling fin cover 4, so that the gas sucked in by the cooling fan can be passively introduced into the duct at a higher proportion and faster, reducing the loss caused by gas flowing to the area outside the duct, improving the gas introduction efficiency, and ultimately improving the heat dissipation efficiency.

[0051] Specifically, the middle area of the external heat dissipation fin group 12 is hollowed out according to the shape of the heat dissipation fan 3, and the hollowed-out area is the external heat dissipation fan mounting portion 13. Several internal thread mounting holes are provided in the hollowed-out area on the surface of the outer shell 1 (i.e., the external heat dissipation fan mounting portion 13) for fixing the heat dissipation fan 3 which has its own mounting holes. The heat dissipation fan 3A surface is the air inlet surface, and the 3B surface is the air outlet surface. The heat dissipation fan 3 has various specifications, sizes, powers and exhaust directions. Its exhaust direction is affected by the fan blade structure. Generally, air is sucked in from the fan 3A surface, accelerated by the fan blade turbine, and discharged from the 3B surface. The mounting holes of the heat dissipation fan 3 are matched one by one with the internal thread mounting holes of the external heat dissipation fan mounting portion 13, and screws are passed through the mounting holes of the heat dissipation fan 3 and the internal thread mounting holes of the external heat dissipation fan mounting portion 13 to connect them stably and reliably.

[0052] Specifically, the air inlet channel 41 includes a mesh hollow structure.

[0053] The mesh hollow structure has an irregular shape, which can ensure that the air inlet surface 3A of the heat dissipation fan 3 can normally inhale air, and can prevent foreign objects or human body parts from being drawn into the fan, causing damage to the fan or injury to the human body.

[0054] Specifically, a plurality of fin top internal thread mounting holes 124 are provided at the top of the external heat dissipation fin group 12 , and a plurality of fin cover plate internal thread mounting through holes 42 corresponding to the fin top internal thread mounting holes 124 are provided on the external heat dissipation fin cover plate 4 .

[0055] The connection between the external heat dissipation fin group 12 and the external heat dissipation fin cover plate 4 is a detachable connection structure. When assembling, just use screws to pass through the internal threaded mounting holes 42 of the fin cover plate and the internal threaded mounting holes 124 on the top of the fins and tighten them to make them stably and reliably fixed together; when disassembling, just unscrew the screws.

[0056] Specifically, the heat dissipation fan 3 is an ultra-thin waterproof fan.

[0057] Considering the application of the mobile robot in a humid environment or an environment where it may accidentally come into contact with water, the cooling fan 3 adopts an ultra-thin waterproof fan, which has at least four advantages: (1) The usage scenarios of mobile robots often require the lighter the weight, the better, especially for additional components such as the heat dissipation structure. Using an ultra-thin waterproof fan can reduce the weight. (2) The fan itself is waterproof, reducing the corrosion of water vapor on the fan and extending its service life. (3) While reducing the amount of external gas inhaled, the amount of water vapor inhaled is also reduced, preventing the formation of water accumulation on the surface of the external heat dissipation fins 121 and the shell 1, thereby reducing the contact area between the gas and the fins and the gas flow rate, and further reducing the heat dissipation efficiency. (4) Ensure the maximum heat dissipation capacity.

[0058] Specifically, it also includes: a circuit board 2, and the circuit board 2 is connected to the shell 1.

[0059] When the circuit board 2 is powered on and working, the chips on the circuit board 2 start to execute computing tasks, thus generating heat. If the circuit board 2 is not connected to the shell 1, then the heat on the circuit board 2 needs to be conducted to the shell 1 through the air medium and then dissipated through the shell 1. In this case, due to the need to pass through air conduction in the middle, the heat dissipation efficiency will be greatly reduced. However, when the circuit board 2 is connected to the shell 1, the heat on the circuit board 2 no longer has to be conducted to the shell 1 through the air (including both direct physical contact conduction and conduction through the air medium), and the heat dissipation efficiency is greatly improved.

[0060] Specifically, the shell 1 is provided with an internal heat conduction block 11, and the circuit board 2 is provided with a main electrical heat source part 21, and the main electrical heat source part 21 is in direct contact with the internal heat conduction block 11. The shell 1 is processed by integral molding, and the internal heat conduction block 11 and the external heat dissipation fin group 12 are part of the entity of the shell 101.

[0061] The internal heat conduction block 11 on the inner surface of the shell 1 is in direct contact with the main electrical heat source part 21 on the circuit board 2 inside the shell. According to the position, quantity, size, etc. of the main electrical heat source part 21 on the circuit board 2, combined with the space utilization inside the controller, by designing the internal heat conduction block 11 with appropriate position, quantity, and size, the direct contact area can be increased, and the heat conduction from the circuit board 2 to the shell 1 can be accelerated, greatly improving the heat dissipation efficiency.

[0062] Specifically, there are two internal heat conduction blocks 11 on the inner surface of the shell 1, and several circuit boards are arranged inside the shell 1. Each of the two circuit boards has a main electrical heat source part 21. When the circuit board is powered on and working, the chips of the main electrical heat source part 21 start to execute computing tasks, thus generating heat. The main function of the two internal heat conduction blocks 11 on the inner surface of the shell 1 is to be in direct contact connection with the two internal heat conduction blocks 11 on the inner surface of the shell 1, reducing the conduction distance of the air medium and accelerating the heat conduction of the two main electrical heat source parts 21.

[0063] A heat dissipation method for a mobile robot controller using the heat dissipation structure of the above-mentioned mobile robot controller, comprising the following steps:

[0064] Start the cooling fan 3, suck external gas from the air inlet passage 41, and after the gas is accelerated by the cooling fan 3, it blows onto the outer surface of the housing 1, then flows to the air inlet of the external heat dissipation fin duct 123, and is discharged from the air outlet of the external heat dissipation fin duct 123 after flowing through the external heat dissipation fin duct 123.

[0065] The external gas will enter from the air inlet passage 41 of the external heat dissipation fin cover plate 4 under suction, be accelerated by the cooling fan 3 and then blow onto the surface of the housing 1, then flow to the air inlet of the external heat dissipation fin duct 123, and is discharged from the air outlet of the external heat dissipation fin duct 123 after passing through the external heat dissipation fin duct 123. In the case of heat dissipation required, the temperature of the external gas is relatively low, while the temperature of the controller's own structures such as the external heat dissipation fins 121 and the surface of the housing 1 is relatively high. During the above entire flow process, the external gas can take away the heat of the controller's own structures such as the surface of the external heat dissipation fins 121 and the surface of the housing 1. By continuously sucking in external gas and discharging it after flowing through the external heat dissipation fin duct 123, the purpose of heat dissipation is achieved. After the cooling fan 3 blows air onto the surface of the housing 1, it is immediately passively introduced into the air inlet of the duct. Due to the Bernoulli principle acting on the gas at the air inlet of the duct, the pressure difference between the air inlet and the air outlet of the duct causes more air to pass through the duct, which can further improve the heat dissipation efficiency. During this process, most surfaces of each fin can be fully in contact with the flowing air, and the increase in the number of fins themselves and the contact area with the flowing air can further improve the heat dissipation efficiency. Moreover, if in a closed environment, the cooling fan 3 drives the gas in the closed space to move in a cyclic manner, which can promote the uniform dispersion of heat in the limited space.

[0066] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A heat dissipation structure for a mobile robot controller, characterized in that Comprising: A housing (1), the housing (1) being provided with an external heat dissipation fin group (12) and an external heat dissipation fan mounting portion (13), the external heat dissipation fin group (12) including a plurality of external heat dissipation fins (121); A heat dissipation fan (3), the heat dissipation fan (3) being mounted on the external heat dissipation fan mounting portion (13), a side of the heat dissipation fan (3) away from the housing (1) being an air inlet surface (3A), and a side of the heat dissipation fan (3) close to the housing (1) being an air outlet surface (3B); An external heat dissipation fin cover plate (4), the external heat dissipation fin cover plate (4) being connected to the external heat dissipation fin group (12), a portion of the external heat dissipation fin cover plate (4) corresponding to the external heat dissipation fan mounting portion (13) being provided with an air inlet passage (41), and an external heat dissipation fin duct (123) being formed between the external heat dissipation fin cover plate (4) and any two adjacent external heat dissipation fins (121), one end of the external heat dissipation fin duct (123) close to the external heat dissipation fan mounting portion (13) being an air inlet, and one end of the external heat dissipation fin duct (123) away from the external heat dissipation fan mounting portion (13) being an air outlet.

2. The heat dissipation structure of a mobile robot controller according to claim 1, wherein: The external heat dissipation fin duct (123) is arranged around the external heat dissipation fan mounting portion (13).

3. The heat dissipation structure of a mobile robot controller according to claim 2, wherein: The external heat dissipation fin duct (123) starts from the edge of the external heat dissipation fan mounting portion (13) and extends outward in a transverse or longitudinal direction.

4. The heat dissipation structure of a mobile robot controller according to claim 1, wherein: The external heat dissipation fan mounting portion (13) is not ventilated with the inner surface of the housing (1).

5. The heat dissipation structure of a mobile robot controller according to claim 1, wherein: The height of the external heat dissipation fins (121) is higher than the mounting height of the heat dissipation fan (3).

6. The heat dissipation structure of a mobile robot controller according to claim 1, wherein: The air inlet passage (41) includes a mesh-like hollow structure; A plurality of fin top internal thread mounting holes (124) are provided at the top of the external heat dissipation fin group (12), and the external heat dissipation fin cover plate (4) is provided with a plurality of fin cover plate internal thread mounting through holes (42) corresponding one-to-one to the fin top internal thread mounting holes (124); The heat dissipation fan (3) is an ultra-thin waterproof fan.

7. The heat dissipation structure of a mobile robot controller according to any one of claims 1-6, characterized in that Further comprising: A circuit board (2), the circuit board (2) being connected to the housing (1).

8. The heat dissipation structure of a mobile robot controller according to claim 7, wherein: The housing (1) is provided with an internal heat conduction block (11), the circuit board (2) is provided with a main electrical heat source portion (21), and the main electrical heat source portion (21) is in direct contact with the internal heat conduction block (11).

9. A heat dissipation method for a mobile robot controller using the heat dissipation structure of the mobile robot controller according to any one of claims 1-8.

10. The heat dissipation method of the mobile robot controller according to claim 9, wherein It includes the following steps: Start the heat dissipation fan (3), suck external gas from the air inlet channel (41), the gas is accelerated by the heat dissipation fan (3) and then blows onto the outer surface of the housing (1), and then flows to the air inlet of the external heat dissipation fin duct (123), and is discharged from the air outlet of the external heat dissipation fin duct (123) after flowing through the external heat dissipation fin duct (123).

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