CN111864306A - Water cooling circulation structure and electric surfboard - Google Patents

Abstract

The invention discloses a water-cooled circulation structure and an electric surfboard. The water-cooled circulation structure includes a battery device, a motor device, a mounting pipe assembly and a propeller. The battery device includes a battery body and a first cooling channel attached to the outer wall of the battery body; the motor device It includes a motor body and a second cooling channel attached to the outer wall of the motor body. The second cooling channel is connected to the first cooling channel, and the motor body is electrically connected to the battery body. A third cooling channel is formed in the installation tube assembly. , the third cooling flow channel is respectively communicated with the first cooling flow channel and the second cooling flow channel; the propeller is connected with the motor body and is located in the installation pipe assembly. The technical scheme of the present invention aims to solve the problem of overheating of the motor and the battery in the electric surfboard, so as to improve the safety of the user using the electric surfboard and ensure the service life of the electric surfboard.

Description

Water cooling circulation structure and electric surfboard

technical field

The invention relates to the technical field of surfboards, in particular to a water-cooled circulation structure and an electric surfboard.

Background technique

With the development of society, electric surfboards can be driven without wind and waves due to the addition of a power source, and can be applied to various waters, effectively making up for the defects of traditional unpowered surfboards, thereby making surfing more popular. Widespread. Due to the limited internal space of the electric surfboard, the battery and the motor in the electric surfboard will generate excessive heat when used for a long time, so that there is a potential safety hazard due to the heating of the battery and the motor during the use of the electric surfboard.

The above content is only used to assist the understanding of the technical solutions of the present application, and does not mean that the above content is the prior art.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a water cooling circulation structure, which aims to solve the problem of overheating of the motor and battery in the electric surfboard, so as to improve the safety of the user using the electric surfboard and ensure the service life of the electric surfboard.

In order to achieve the above purpose, the water-cooled circulation structure proposed by the present invention is applied to electric surfboards, and the water-cooled circulation structure includes:

a battery device, the battery device comprising a battery body and a first cooling channel attached to the outer wall of the battery body;

A motor device, the motor device includes a motor body and a second cooling channel attached to the outer wall of the motor body, the second cooling channel is communicated with the first cooling channel, and the motor body is connected to the The battery body is electrically connected;

a mounting tube assembly, wherein a third cooling flow channel is formed in the mounting tube assembly, the third cooling flow channel is respectively communicated with the first cooling flow channel and the second cooling flow channel; and

a propeller, the propeller is connected to the motor body and is located in the installation pipe assembly, the motor body drives the propeller to rotate to push a part of the water flow located in the third cooling flow channel to pass through the first cooling flow in sequence channel and the second cooling channel, and then return to the third cooling channel.

In an embodiment of the present application, the motor device further includes a motor fixing cylinder and a motor installation cover, the motor fixing cylinder is connected to the installation pipe assembly;

The motor body is embedded in the motor fixing cylinder, the motor installation cover is connected to the end of the motor fixing cylinder away from the installation tube assembly, and the motor fixing cylinder and the motor installation cover are enclosed to form a formed area. The second cooling channel is described.

In an embodiment of the present application, the water-cooling circulation structure further includes a plurality of guide tubes, the side wall of the motor fixing cylinder is provided with a second water inlet, the motor mounting cover is provided with a second water outlet, and the motor mounting cover is provided with a second water outlet. The second water inlet is communicated with the first cooling channel through a guide tube, and the second water outlet is communicated with the third cooling channel through a guide tube.

In an embodiment of the present application, it is defined that the motor fixing cylinder has a height value in the up-down direction, and the height value of the second water outlet is higher than the height value of the second water inlet.

In an embodiment of the present application, the battery device is further provided with a first water inlet and a first water outlet, and the first water inlet and the first water outlet are respectively connected to two parts of the first cooling pipe. The first water inlet communicates with the third cooling pipe through a guide pipe, and the first water outlet communicates with the second water inlet through a guide pipe.

In an embodiment of the present application, the installation pipe assembly is provided with a third water inlet and a third water outlet, and the third water inlet and the third water outlet are respectively connected to two parts of the third cooling pipe. end, the propeller is located between the third water inlet and the third water outlet;

The third water inlet is communicated with the first water inlet through a guide pipe, and the third water outlet is communicated with the second water outlet.

In an embodiment of the present application, the installation pipe assembly includes a pipe body and a tail cover, the pipe body and the tail cover enclose the third cooling flow channel, and the pipe body is installed with the motor The tail cover is connected to the end of the pipe body away from the motor installation cylinder, the third water outlet is provided on the side wall of the pipe body, and the tail cover is provided with the third water inlet .

In an embodiment of the present application, it is defined that the pipe body has an up-down direction, the lower surface of the pipe body is provided with a general water inlet, the end of the tail cover facing away from the pipe body is provided with a general water outlet, the The general water inlet and the general water outlet are used to connect the inside of the pipe body and the tail cover with the outside world, respectively.

In an embodiment of the present application, the motor mounting structure further includes a fixing base plate, the fixing base plates are respectively connected with the motor fixing cylinder and the pipe body, and are located at the same location as the motor fixing cylinder and the pipe body. side.

The present invention also proposes an electric surfboard, comprising a water-cooled circulation structure, and the water-cooled circulation structure includes:

a battery device, the battery device comprising a battery body and a first cooling channel attached to the outer wall of the battery body;

A motor device, the motor device includes a motor body and a second cooling channel attached to the outer wall of the motor body, the second cooling channel is communicated with the first cooling channel, and the motor body is connected to the The battery body is electrically connected;

a mounting tube assembly, wherein a third cooling flow channel is formed in the mounting tube assembly, the third cooling flow channel is respectively communicated with the first cooling flow channel and the second cooling flow channel; and

a propeller, the propeller is connected to the motor body and is located in the installation pipe assembly, the motor body drives the propeller to rotate to push a part of the water flow located in the third cooling flow channel to pass through the first cooling flow in sequence channel and the second cooling channel, and then return to the third cooling channel.

The water-cooled circulation structure of the technical solution of the present invention is applied to an electric surfboard. The water-cooled circulation structure includes a battery device, a motor device, a mounting tube assembly and a propeller, wherein the battery device includes a battery body and a first cooling channel, and the motor device includes a motor body. and the second cooling flow channel, the second cooling flow channel is communicated with the first cooling flow channel, so that the water flow can flow from the first cooling flow channel to the second cooling flow channel. The motor body is electrically connected with the battery body, and a third cooling flow channel is formed in the installation tube assembly. The third cooling flow channel is respectively communicated with the first cooling flow channel and the second cooling flow channel. The propeller is connected to the motor body and is located in the Install the pipe assembly, so that the battery body supplies power to the motor body, and the motor body drives the propeller to rotate to push the part of the water flow located in the third cooling channel to pass through the first cooling channel and the second cooling channel in turn, and then return to the third cooling channel. inside the flow channel. Since the first cooling channel is attached to the outer wall of the battery body and the second cooling channel is attached to the outer wall of the motor body, when the water flows through the first cooling channel and the second cooling channel, the battery body and the motor body can be taken away at the same time. heat to cool down. In addition, the first cooling flow channel, the second cooling flow channel and the third cooling flow channel are combined to form a cooling system, so that the water flow used for cooling first passes through the first cooling flow channel to cool the battery body, and then passes through the first cooling flow channel to cool the battery body. The second cooling channel cools the motor body, so that the water flow used for cooling can be effectively recycled, making the cooling effect of the water-cooling circulation structure more efficient, improving the safety of users using the electric surfboard, and ensuring the electric surfboard. service life.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained according to the structures shown in these drawings without creative efforts.

1 is a schematic structural diagram of an embodiment of a water-cooled circulation structure of the present invention;

2 is a schematic structural diagram of another perspective of the water-cooled circulation structure of the present invention;

Fig. 3 is the cross-sectional structural schematic diagram of the water-cooled circulation structure of the present invention;

Fig. 4 is the assembly schematic diagram of the partial structure of the water cooling circulation structure of the present invention;

FIG. 5 is a schematic structural diagram of the motor mounting cover of the water-cooled circulation structure of the present invention.

Description of reference numbers:

The realization, functional characteristics and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relationship between various components under a certain posture (as shown in the accompanying drawings). The relative positional relationship, the movement situation, etc., if the specific posture changes, the directional indication also changes accordingly.

In the present invention, unless otherwise expressly specified and limited, the terms "connected", "fixed" and the like should be understood in a broad sense, for example, "fixed" may be a fixed connection, a detachable connection, or an integrated; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be an internal communication between two elements or an interaction relationship between the two elements, unless otherwise explicitly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In addition, descriptions such as "first", "second", etc. in the present invention are only for descriptive purposes, and should not be construed as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In addition, the meaning of "and/or" appearing in the whole text includes three parallel schemes, and taking "A and/or B as an example", it includes scheme A, scheme B, or scheme that A and B satisfy at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of such technical solutions does not exist. , is not within the scope of protection required by the present invention.

The present invention provides a water cooling cycle structure 100 .

1 to 4 , in an embodiment of the present invention, the water-cooled circulation structure 100 includes a battery device 10 , a motor device 20 , a mounting tube assembly 30 and a propeller 40 , and the battery device 10 includes a battery body 11 and a battery body 11 attached to the battery body 11 . The first cooling channel 12 of the outer wall; the motor device 20 includes a motor body 21 and a second cooling channel 22 attached to the outer wall of the motor body 21, the second cooling channel 22 communicates with the first cooling channel 12, and the motor body 21 Electrically connected with the battery body 11; a third cooling flow channel 31 is formed in the installation tube assembly 30, and the third cooling flow channel 31 communicates with the first cooling flow channel 12 and the second cooling flow channel 22 respectively; the propeller 40 is connected to the motor body 21 is connected and located in the installation tube assembly 30, the motor body 21 drives the propeller 40 to rotate to push the part of the water flow located in the third cooling channel 31 to pass through the first cooling channel 12 and the second cooling channel 22 in turn, and then return to the third cooling channel 22. inside the cooling channel 31 .

Wherein, the motor body 21 and the battery body 11 are provided with independent casings for waterproof sealing protection. By setting the first cooling channel 12 and the second cooling channel 22 , the water can flow past the outer walls of the battery body 11 and the motor body 21 to achieve the cooling effect. At the same time, the battery body 11 can be provided with an electrical socket, and the motor body 21 is provided with a waterproof connector, and the electrical socket is plugged and sealed through the waterproof connector, so that the battery body 11 and the motor body 21 are electrically connected. Wherein, the propeller 40 can be fixed at the motor shaft of the motor body 21 by means of clip connection or screw connection, so as to facilitate later maintenance and replacement. In addition, in order to improve the cooling effect, the first cooling flow channel 12 can be arranged in a curve to increase the contact area with the battery body 11 , thereby improving the cooling effect of the battery device 10 .

The water-cooled circulation structure 100 of the technical solution of the present invention is applied to an electric surfboard. The water-cooled circulation structure 100 includes a battery device 10, a motor device 20, a mounting pipe assembly 30 and a propeller 40, wherein the battery device 10 includes a battery body 11 and a first cooling flow. The motor device 20 includes a motor body 21 and a second cooling channel 22. The second cooling channel 22 communicates with the first cooling channel 12, so that the water flow can flow from the first cooling channel 12 to the second cooling channel. Inside Road 22. The motor body 21 is electrically connected to the battery body 11 , and a third cooling flow channel 31 is formed in the mounting tube assembly 30 , and the third cooling flow channel 31 communicates with the first cooling flow channel 12 and the second cooling flow channel 22 respectively. The propeller 40 is connected to the motor body 21 and is located in the installation tube assembly 30, so that the battery body 11 supplies power to the motor body 21, and the motor body 21 drives the propeller 40 to rotate to push the part of the water flow located in the third cooling channel 31 to pass through the first cooling in sequence The flow channel 12 and the second cooling flow channel 22 return to the third cooling flow channel 31 . Since the first cooling channel 12 is attached to the outer wall of the battery body 11 and the second cooling channel 22 is attached to the outer wall of the motor body 21 , when the water flows through the first cooling channel 12 and the second cooling channel 22 , it can be taken away at the same time. The heat of the battery body 11 and the motor body 21 can achieve the effect of cooling. In addition, the first cooling flow channel 12 , the second cooling flow channel 22 and the third cooling flow channel 31 are matched to form a cooling system, so that the water flow for cooling first passes through the first cooling flow channel 12 to the battery body 11 . Cooling, the motor body 21 is cooled through the second cooling channel 22, so that the water flow used for cooling can be effectively recycled, so that the cooling effect of the water cooling circulation structure 100 is more efficient, so as to improve the user's ability to use the electric surfboard. Safety and guarantee the life of the electric surfboard.

1 to 5, in an embodiment of the present application, the motor device 20 further includes a motor fixing cylinder 23 and a motor mounting cover 24, the motor fixing cylinder 23 is connected with the mounting pipe assembly 30; the The motor body 21 is embedded in the motor fixing cylinder 23, the motor mounting cover 24 is connected to the end of the motor fixing cylinder 23 away from the mounting pipe assembly 30, the motor fixing cylinder 23 and the motor mounting cover 24 encloses the second cooling channel 22 . Specifically, one end of the motor body 21 is clamped and fixed at the connection between the motor fixing cylinder 23 and the installation tube assembly 30 , and then covered on the motor fixing cylinder 23 by the motor installation cover 24 to further abut the opposite end of the motor body 21 . , in order to ensure the stability of the motor body 21 after installation, so as to prevent the motor body 21 from shaking during normal operation, resulting in unbalanced rotation of the propeller 40, so as to ensure the normal use of the electric surfboard. At the same time, a second cooling channel 22 is formed between the motor fixing cylinder 23 and the motor mounting cover 24 , so that the second cooling channel 22 is in close contact with the motor body 21 . The motor mounting cover 24 is provided with a through hole, so that the cable of the motor body 21 can pass through the through hole to be electrically connected with the power source to ensure power supply. The motor body 21 is attached to the motor fixing cylinder 23 . In addition, the motor mounting cover 24 is covered on the motor fixing cylinder 23 to seal the motor body 21 , to ensure the stability of the motor body 21 after installation, and to avoid damage to the motor body 21 caused by the external environment.

Further, the water-cooling circulation structure 100 further includes a plurality of guide pipes 50, the side wall of the motor fixing cylinder 23 is provided with a second water inlet 231, the motor mounting cover 24 is provided with a second water outlet 241, the The second water inlet 231 communicates with the first cooling channel 12 through the guide tube 50 , and the second water outlet 241 communicates with the third cooling channel 31 through the guide tube 50 . In order to facilitate installation, a second water inlet 231 is provided on the side wall of the motor fixing cylinder 23, so that the water flow can flow into the motor installation cylinder through the second water inlet 231, and the gap between the motor body 21 and the motor fixing cylinder 23 A second cooling channel 22 is formed therebetween, so that the motor body 21 can be cooled by water flow, and at the same time, the motor mounting cover 24 is provided with a second water outlet 241, so that the water flow after cooling can be discharged from the second water outlet 241, In order to achieve the effect of circulating heat dissipation, to ensure the normal use of the motor body 21 . When the water flows in the guide tube 50 , it also conducts heat dissipation and cooling. The guide tube 50 is made of flexible material for easy installation by the user.

Further, it is defined that the motor fixing cylinder 23 has a height value in the vertical direction, and the height value of the second water outlet 241 is higher than the height value of the second water inlet 231 . In order to improve the cooling effect of the motor body 21, the height of the second water outlet 241 is higher than the height of the second water inlet 231, so that a part of the water can be stored in the motor fixing cylinder 23 for a long time. In addition, the height value of the second water outlet 241 can be set higher than the height value of the motor body 21, so that the water flow from the second water inlet 231 needs to be fully covered with the outer casing of the motor body 21 before it can flow from the second water outlet 241. discharge, so as to further improve the cooling effect on the motor body 21 .

In an embodiment of the present application, referring to FIGS. 1 to 5 , the battery device 10 is further provided with a first water inlet 13 and a first water outlet 14 , the first water inlet 13 and the first water outlet 14 are respectively connected to both ends of the first cooling pipe, the first water inlet 13 communicates with the third cooling pipe through a guide pipe 50, and the first water outlet 14 passes through a guide pipe 50. The flow pipe 50 communicates with the second water inlet 231 . Wherein, the first water inlet 13 and the first water outlet 14 are protruded from the outer surface of the battery device 10 so as to make the operation and installation more convenient for the user and improve the installation efficiency. The water flow can be stably flowed from the third cooling channel 31 to the first water inlet 13 of the first cooling channel 12 through the guiding of the guide tube 50 , and then flows from the first water outlet 14 to the second cooling channel 22 . The second water inlet 231 ensures the cooling effect of water cooling.

Further, the installation pipe assembly 30 is provided with a third water inlet 321 and a third water outlet 322, and the third water inlet 321 and the third water outlet 322 are respectively connected to both ends of the third cooling pipe , the propeller 40 is located between the third water inlet 321 and the third water outlet 322; the third water inlet 321 is communicated with the first water inlet 13 through a guide pipe 50, and the third water inlet 321 is connected to the first water inlet 13. The three water outlets 322 communicate with the second water outlet 241 . The propeller 40 is located between the third water inlet 321 and the third water outlet 322, and the third water outlet 322 is communicated with the second water outlet 241, so that the water passing through the second cooling channel 22 and flowing out from the second water outlet 241 The water flow will flow to the third water outlet 322, and is driven by the propeller 40 to flow to the third water inlet 321, so that the water flow can pass through the third water inlet 321 and then flow to the first water inlet 13 to continue cooling.

Further, the installation pipe assembly 30 includes a pipe body 32 and a tail cover 33, the pipe body 32 and the tail cover 33 enclose the third cooling channel 31, and the pipe body 32 and the The motor installation cylinder is connected, the tail cover 33 is connected to the end of the pipe body 32 away from the motor installation cylinder, the third water outlet 322 is provided on the side wall of the pipe body 32, and the tail cover 33 is opened There is the third water inlet 321 .

Wherein, the pipe body 32 and the tail cover 33 can be connected and fixed in a detachable manner such as snap connection or screw connection. The tail cover 33 is connected to the end of the pipe body 32 away from the electrode fixing cylinder, so that the propeller 40 has a certain distance from the outside, which can not only effectively protect the propeller 40, but also make the water flow driven by the propeller 40 rotate along the tail cover 33 only. ejection to improve the effect of the thrust of the propeller 40 to drive the electric surfboard to move. The pipe body 32 and the motor fixing cylinder 23 can be integrally formed. The production process of the motor fixing cylinder 23 and the pipeline body 32 is simplified, the process of precise positioning and assembly is avoided, the production and processing efficiency is improved, and the structural strength of the motor fixing cylinder 23 and the pipeline body 32 is ensured, thereby improving the motor body 21 and the propeller. 40 Stability after installation.

In an embodiment of the present application, referring to FIGS. 1 to 5 , it is defined that the pipe body 32 has an up-down direction, a general water inlet 323 is opened on the lower surface of the pipe body 32 , and the tail cover 33 faces away from the pipe One end of the main body 32 is provided with a general water outlet 331 , and the general water inlet 323 and the general water outlet 331 are used to connect the inside of the pipe body 32 and the tail cover 33 with the outside, respectively. Specifically, the main body 32 of the pipeline is provided with a general water inlet 323 and a general water outlet 331, so that the water flow can continuously pour in from the general water inlet 323 and spray out to the general water outlet 331 under the action of the rotation of the propeller 40, so as to generate a The front thrust allows the electric surfboard to travel forward. And the general water inlet 323 is set close to the motor fixing cylinder 23, and the general water outlet 331 is opened at the end of the tail cover 33 away from the pipe body 32, so as to increase the movable water flow of the pipe body 32, so that the propeller 40 can drive more water flow to rotate, so as to further enhance the thrust of the electric surfboard, and ensure the normal use of the waterproof motor and propeller 40. In addition, it is defined that the pipe body 32 has an up-down direction, and the general water inlet 323 is opened on the lower surface of the pipe body 32 . The general water inlet 323 is provided on the lower surface of the pipe body 32, so that the water flow can enter the pipe body 32 more easily, and at the same time, the water inlet direction also avoids directly impacting the motor body 21 in the motor fixing cylinder 23, which further improves the Protection of the motor body 21. In addition, the inner wall of the pipe body 32 is also provided with a guide surface, so that the water flow enters the general water inlet 323 on the lower surface of the pipe body 32 and contacts the guide surface to flow toward the direction of the propeller 40 .

Optionally, the motor installation structure further includes a fixed bottom plate 60, the fixed bottom plate 60 is respectively connected with the motor fixed cylinder 23 and the pipe body 32, and is located in the motor fixed cylinder 23 and the pipe body 32. same side. Specifically, the fixed bottom plate 60, the motor fixing cylinder 23 and the pipe main body 32 are all of an integral structure, so as to further improve the overall structural strength, and at the same time, the pre-assembly process is omitted, and the assembly efficiency is improved. At the same time, the fixed bottom plate 60 is arranged in the shape of a flat plate, so that the fixed bottom plate 60 can be used as a carrier to carry the motor fixing cylinder 23 and the pipe body 32, so as to be connected to the board body of the electric surfboard through the fixed bottom plate 60, and due to the large contact area And the installation conditions are more convenient, so the fixing bottom plate 60 and the board body of the electric surfboard are more convenient for installation, disassembly and maintenance, and the efficiency of installation and disassembly is improved.

The present invention also proposes an electric surfboard, the electric surfboard includes a water-cooled circulation structure 100, and the specific structure of the water-cooled circulation structure 100 refers to the above-mentioned embodiments. At least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments are provided, which will not be repeated here.

The above descriptions are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Under the inventive concept of the present invention, the equivalent structural transformations made by the contents of the description and drawings of the present invention, or the direct/indirect application Other related technical fields are included in the scope of patent protection of the present invention.

Claims (10)

1. A water-cooled circulation structure, applied to an electric surfboard, is characterized in that, the water-cooled circulation structure comprises: a battery device, the battery device comprising a battery body and a first cooling channel attached to the outer wall of the battery body; A motor device, the motor device includes a motor body and a second cooling channel attached to the outer wall of the motor body, the second cooling channel is communicated with the first cooling channel, and the motor body is connected to the The battery body is electrically connected; a mounting tube assembly, wherein a third cooling flow channel is formed in the mounting tube assembly, the third cooling flow channel is respectively communicated with the first cooling flow channel and the second cooling flow channel; and a propeller, the propeller is connected to the motor body and is located in the installation pipe assembly, the motor body drives the propeller to rotate to push a part of the water flow located in the third cooling flow channel to pass through the first cooling flow in sequence channel and the second cooling channel, and then return to the third cooling channel. 2 . The water-cooled circulation structure according to claim 1 , wherein the motor device further comprises a motor fixing cylinder and a motor installation cover, and the motor fixing cylinder is connected with the installation pipe assembly; 3 . The motor body is embedded in the motor fixing cylinder, the motor installation cover is connected to the end of the motor fixing cylinder away from the installation tube assembly, and the motor fixing cylinder and the motor installation cover are enclosed to form a formed area. The second cooling channel is described. 3. The water-cooled circulation structure according to claim 2, wherein the water-cooled circulation structure further comprises a plurality of guide tubes, the side wall of the motor fixing cylinder is provided with a second water inlet, and the motor mounting cover is provided with a second water inlet. There is a second water outlet, the second water inlet is communicated with the first cooling channel through a guide tube, and the second water outlet is connected with the third cooling channel through a guide tube Connected. 4 . The water-cooling cycle structure according to claim 3 , wherein the motor fixing cylinder is defined to have a height value in the up-down direction, and the height value of the second water outlet is higher than the height of the second water inlet. 5 . value. 5. The water cooling cycle structure according to claim 3, wherein the battery device is further provided with a first water inlet and a first water outlet, and the first water inlet and the first water outlet are respectively connected to At both ends of the first cooling pipe, the first water inlet communicates with the third cooling pipe through a guide pipe, and the first water outlet communicates with the second cooling pipe through a guide pipe. The water inlet is connected. 6. The water cooling cycle structure according to claim 5, wherein the installation pipe assembly is provided with a third water inlet and a third water outlet, and the third water inlet and the third water outlet are respectively connected to At both ends of the third cooling pipe, the propeller is located between the third water inlet and the third water outlet; The third water inlet is communicated with the first water inlet through a guide pipe, and the third water outlet is communicated with the second water outlet. 7 . The water cooling cycle structure according to claim 6 , wherein the installation pipe assembly comprises a pipe body and a tail cover, and the pipe body and the tail cover are enclosed to form the third cooling flow channel, so the third cooling flow channel is formed. 8 . The pipe body is connected to the motor installation cylinder, the tail cover is connected to the end of the pipe body away from the motor installation cylinder, the third water outlet is arranged on the side wall of the pipe body, and the tail cover The third water inlet is opened. 8 . The water-cooling circulation structure according to claim 7 , wherein the pipe body is defined to have an up-down direction, a general water inlet is opened on the lower surface of the pipe body, and an end of the tail cover is away from the pipe body. 9 . A general water outlet is provided, and the general water inlet and the general water outlet are used to connect the inside of the main body of the pipe and the tail cover with the outside world, respectively. 9 . The water-cooled circulation structure according to claim 7 , wherein the motor installation structure further comprises a fixed base plate, the fixed base plate is respectively connected with the motor fixing cylinder and the pipe main body, and is located at the position of the motor. 10 . The fixed cylinder and the pipe body are on the same side. 10. An electric surfboard, characterized in that it comprises the water cooling circulation structure according to any one of claims 1 to 9.

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