A method for manufacturing a pipeline-free liquid cooling structure and a motor

Abstract

The present invention discloses a structural method for pipeline-free liquid cooling, comprising: a first glue injection process, injecting liquid curing glue into the accommodating space; a hot melt material injection process, forming a first glue layer after the curing glue is cured, and injecting liquid hot melt material into the accommodating space and positioning the first glue layer on the cured curing glue; a second glue injection process, injecting liquid curing glue into the accommodating space and positioning the first glue layer on the cured hot melt material after the hot melt material is cured; a heating process, forming a second glue layer after the curing glue is cured, heating the cured hot melt material to melt the cured hot melt material into a liquid state; and a discharge process, discharging the liquid hot melt material from the accommodating space and forming the liquid cooling channel, wherein the coolant can flow into and through the liquid cooling channel along the cooling liquid inlet, and can flow out of the liquid cooling channel along the cooling liquid outlet.

Description

Technical Field

[0001] The present invention relates to the technical field of motor heat exchange equipment, and in particular to a method for manufacturing a pipeline-free liquid cooling structure and a motor. Background Art

[0002] In the field of automotive electric drive, traditional radial flux motors are being widely developed for weight and cost optimization. However, there is very limited room for further improvement in technology. Due to the technical characteristics of axial flux motors, such as compact structure, flat and ultra-thin, small size, light weight and high power density, axial flux motors are now mostly used as the main driving equipment.

[0003] However, the increasing temperature rise of the drive motor causes the motor's operating temperature to rise increasingly. If the generated heat cannot be dissipated outward in a timely manner, it will accelerate the aging of the motor's insulation materials, significantly affecting the motor's durability and reliability. Conventional liquid cooling systems often place a coiled heat exchanger inside the motor, allowing coolant to flow through the coiled heat exchanger, thereby removing heat from the motor's stator.

[0004] This heat exchange method requires a large space to be reserved in advance when designing the motor, and the coil heat exchanger is mostly made of steel, which greatly increases the size and weight of the motor. This is contrary to the technical characteristics of the motor that are increasingly pursued, such as compact structure, flat and ultra-thin, small size, light weight, and high power density. Summary of the Invention

[0005] The present invention provides a method for manufacturing a pipeline-free liquid cooling structure and a motor, so as to solve the problem in the prior art that the installation of a coiled tube heat exchanger increases the volume and weight of the motor.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is to provide a method for manufacturing a pipeline-free liquid cooling structure, which is applied to a motor. The motor includes a motor core shaft, an inner housing, and an outer housing. The outer housing has a coolant inlet and a coolant outlet. The motor core shaft passes through the inner housing. The inner housing and the outer housing enclose a accommodating space, and stators are arranged in the accommodating space at intervals along the circumferential direction. The method for manufacturing the pipeline-free liquid cooling structure includes:

[0007] A first glue injection step is to inject liquid curing glue into the accommodating space;

[0008] a hot melt material injection step, wherein after the curing adhesive is cured to form a first adhesive layer, a liquid hot melt material is injected into the accommodating space and positioned on the cured curing adhesive;

[0009] A second glue injection step, after the hot melt material solidifies, injecting the liquid curing glue into the accommodating space and positioning it on the solidified hot melt material;

[0010] wherein the curing glue and the hot melt material jointly immerse the stator;

[0011] a heating step, wherein after the curing adhesive is cured to form a second adhesive layer, the cured hot melt material is heated to melt the cured hot melt material into a liquid state;

[0012] The discharge process discharges the liquid hot melt material from the accommodating space and forms the liquid cooling channel, wherein the coolant can flow into and through the liquid cooling channel along the coolant inlet, and the coolant can flow out of the liquid cooling channel along the coolant outlet.

[0013] The beneficial effects brought about by the technical solution provided by the present invention are:

[0014] The curing adhesive injected in the first injection step solidifies to form a first adhesive layer, and the curing adhesive injected in the second injection step solidifies to form a second adhesive layer. A liquid cooling channel located between the first and second adhesive layers allows coolant to circulate within the channel and exchange heat with the stator. Compared to existing coiled-tube heat exchangers, this design eliminates the need for piping, and the first and second adhesive layers are lighter, effectively reducing the weight and cost of the motor.

[0015] The liquid cooling channel is a hollow structure. Coolant flows into the cooling channel through the cooling liquid inlet of the motor housing and fully contacts the stator within the cooling channel. Within the cooling channel, the coolant directly contacts the stator's coils, iron core, and other components, eliminating any excess medium between the coolant and the stator. Furthermore, the first and second adhesive layers, along with the liquid cooling channel, encapsulate the stator. The first and second adhesive layers offer greater thermal and cooling conductivity than conventional steel, effectively enhancing heat exchange. After heat exchange, the coolant flows out through the cooling liquid outlet of the motor housing.

[0016] In some embodiments, the first glue injection process and the second glue injection process include: injecting the liquid curing glue above the accommodating space formed by the outer shell and the inner shell.

[0017] By adopting the above technical solution, the glue is injected from the top before the motor is assembled, which can effectively improve the glue injection efficiency.

[0018] In some embodiments, the discharging process includes: discharging the liquid hot melt material along the cooling liquid outlet or the cooling liquid inlet.

[0019] With the above technical solution, when the solidified hot melt material melts, the second adhesive layer is provided on top of the hot melt material, thereby discharging the hot melt material along the coolant inlet or the coolant outlet connected to the liquid cooling channel.

[0020] In some embodiments, a mold installation process is also included, which includes installing the mold on the outer shell, wherein the mold is located below the inner shell and the accommodating space along a first direction; and the curing glue injected by the first glue injection process is injected above the mold along the first direction.

[0021] By adopting the above technical solution, the mold is installed before the first glue injection process, so that the cured glue injected in the first glue injection process can be located on the mold, thereby making the total height of the first glue layer, the liquid cooling channel and the second glue layer the same as the inner shell, and achieving complete filling of the accommodating space.

[0022] In some embodiments, the mold is made of POM.

[0023] Using this technical solution, POM (Polyoxymethylene), a thermoplastic used in engineering, is used as the mold material. It exhibits excellent release and adhesive resistance, meaning it can be easily removed from the mold after the adhesive has cured. Furthermore, POM's high rigidity and resistance to deformation allow it to cure adhesives effectively without deforming.

[0024] In some embodiments, the injection temperature of the first injection process and the second injection process ranges from 40°C to 60°C.

[0025] With the above technical solution, the curing glue needs to be injected during the glue injection process and allowed to solidify evenly. Controlling the temperature between 40°C and 60°C during the glue injection process can effectively ensure the stability of the curing glue.

[0026] The present application also provides a motor that uses the above-mentioned pipeline-free liquid cooling structure manufacturing method. The motor includes: an outer shell, a motor core shaft, an inner shell, an accommodating space, and a stator.

[0027] The outer shell has a coolant inlet and a coolant outlet; the motor core shaft passes through the outer shell along a first direction; the inner shell is arranged around the outer periphery of the motor core shaft and is located inside the outer shell; the outer shell and the inner shell enclose a accommodating space; the stator is arranged in the accommodating space at intervals along the circumferential direction.

[0028] Among them, it also includes a first glue layer, a liquid cooling channel and a second glue layer, the first glue layer is located in the accommodating space and is located at the lower part of the stator along the first direction; the liquid cooling channel is located in the accommodating space and is located in the middle part of the stator along the first direction, and is connected to the cooling liquid inlet and the cooling liquid outlet; the second glue layer is located in the accommodating space and is located at the upper part of the stator along the first direction, wherein the first glue layer, the liquid cooling channel and the second glue layer jointly cover the stator.

[0029] This technical solution eliminates the need for heat exchange piping in the motor. Heat is exchanged through the liquid cooling channel between the first and second adhesive layers. Both layers exhibit excellent thermal and cold conductivity, effectively reducing the motor's weight and cost. Furthermore, the cooling channel allows coolant to flow through, allowing direct contact between the stator and the coolant, further enhancing heat exchange.

[0030] Secondly, the stator packaging process is simpler than the prior art in which a heat exchange pipe is reserved before the stator is installed, which effectively simplifies the structure and makes the stator packaging simpler. This further simplifies the structure of the motor while achieving good heat exchange effect.

[0031] In some embodiments, the height of the first adhesive layer along the first direction is a first preset value, the height of the liquid cooling channel along the first direction is a second preset value, and the height of the second adhesive layer along the first direction is a third preset value, wherein the sum of the first preset value, the second preset value, and the third preset value is equal to the height of the inner shell along the first direction.

[0032] By adopting the above technical solution, a first preset value, a second preset value and a third preset value are set, so that the heights of the first glue layer, the liquid cooling channel and the second glue layer can be set according to actual production needs, wherein the total height of the first glue layer, the liquid cooling channel and the second glue layer is the same as the height of the inner shell, so that the first glue layer, the liquid cooling channel and the second glue layer can completely fill the accommodating space. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0034] Figure 1 This is a process of an embodiment of a method for manufacturing a pipeline-free liquid cooling structure provided by the present invention. Figure 1 ;

[0035] Figure 2 This is a schematic diagram of a motor structure according to an embodiment of a method for manufacturing a pipeline-free liquid cooling structure provided by the present invention;

[0036] Figure 3 This is a schematic diagram of the three-dimensional structure of an embodiment of a motor provided by the present invention;

[0037] Figure 4 This is a process of an embodiment of a method for manufacturing a pipeline-free liquid cooling structure provided by the present invention. Figure 2 ;

[0038] Figure 5 It is a top view of an embodiment of a motor provided by the present invention.

[0039] In the picture:

[0040] Motor structure:

[0041] Motor core shaft—10; inner housing—11; outer housing—12; coolant inlet—120; coolant outlet—121; accommodating space—13; first adhesive layer—130; liquid cooling channel—131; second adhesive layer—132; stator—14; mold—15; upper housing—16. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0043] In order to facilitate the subsequent description, before describing the manufacturing method and motor of the pipeline-free liquid cooling structure, this application first combines Figure 2 Define the first direction ( Figure 2 (Z) and Figure 5 Define the circumferential direction ( Figure 5 In the first direction ( Figure 2 (shown in the Z direction) is a method for manufacturing a pipeline-free liquid cooling structure and the height direction of the motor when it is normally placed, such as the Z direction.

[0044] See also Figures 1 to 2 As shown, Figure 1 The process of manufacturing a pipeline-free liquid cooling structure provided by this application is shown Figure 1 ; Figure 2 A schematic diagram of a motor structure using a pipeline-free liquid cooling structure manufacturing method provided in this application is shown.

[0045] In some embodiments, the present application provides a method for manufacturing a pipeline-free liquid cooling structure, which is applied to a motor. The motor includes a motor core shaft 10, an inner shell 11 and an outer shell 12. The outer shell 12 has a coolant inlet 120 and a coolant outlet 121. The motor core shaft 10 passes through the inner shell 11. The inner shell 11 and the outer shell 12 enclose a accommodating space 13. The accommodating space 13 is circumferentially ( Figure 5 The stator 14 is arranged at intervals (as shown in the direction of O in the middle); the manufacturing method of the pipeline-free liquid cooling structure includes:

[0046] Step S100 , a first glue injection process, injects liquid curing glue into the accommodating space 13 .

[0047] Without changing the original structure of the motor, curing glue is injected into the motor's accommodating space 13. The present application does not limit the type of curing glue, and the curing glue may be, for example, thermosetting plastic, which can solidify and form and is not easily melted. The injection height of the first injection step (step S100) can be set to a first preset value based on actual needs, for example, 10 cm.

[0048] Step S110 , a hot melt material injection process, after the curing adhesive is cured to form a first adhesive layer 130 , liquid hot melt material is injected into the accommodating space 13 and is located on the first adhesive layer 130 .

[0049] Hot melt materials are materials that melt when heated and solidify when cooled, such as waxes and oils. The cured adhesive forms the first adhesive layer 130. The height of the hot melt material injection can be set to a second preset value according to actual needs, such as 5CM.

[0050] Step S120 , a second glue injection process, after the hot melt material is solidified, liquid curing glue is injected into the accommodating space 13 and positioned on the solidified hot melt material, wherein the curing glue and the hot melt material are immersed in the stator 14 together.

[0051] Curing glue is injected again on top of the cured hot melt material, wherein the injection height of the second injection process in step S120 can be set to a third preset value according to actual needs, for example, the third preset value is set to 10CM.

[0052] Step S130 is a heating process. After the curing adhesive is cured to form a second adhesive layer 132 , the cured hot melt material is heated to melt the cured hot melt material into a liquid state.

[0053] The interior of the accommodating space 13 is heated to a temperature of 100°C to 150°C, for example, when wax is used, so that the hot-melt material between the first adhesive layer 130 and the second adhesive layer 132 melts. Furthermore, since the interior of the accommodating space 13 must be heated, the curing adhesive must be heat-resistant and non-deformable, such as UV adhesive.

[0054] In step S140 , the liquid hot melt material is discharged from the accommodating space 13 to form a liquid cooling channel 131 , wherein the coolant can flow into and through the liquid cooling channel 131 along the coolant inlet 120 and can flow out of the liquid cooling channel 131 along the coolant outlet 121 .

[0055] The heating process in step S130 can be performed simultaneously with step S140. That is, during the heating and melting process, the melted hot melt material is also discharged through the coolant outlet 121 or the coolant inlet 120. Since the curing adhesive of the first adhesive layer 130 and the second adhesive layer 132 has already solidified, the first adhesive layer 130 and the second adhesive layer 132 are adhered to the inner housing 11, the outer housing 12, and the stator 14, thereby stably forming the liquid cooling channel 131.

[0056] In the embodiment of the present application, the curing adhesive injected in the first injection process solidifies to form a first adhesive layer 130, the curing adhesive injected in the second injection process solidifies to form a second adhesive layer 132, and a liquid cooling channel 131 located between the first adhesive layer 130 and the second adhesive layer 132 allows coolant to flow through the liquid cooling channel 131 and exchange heat with the stator 14. Compared to conventional coil heat exchangers, this eliminates the need for piping, and the first and second adhesive layers 130, 132 are lighter, effectively reducing the weight and cost of the motor.

[0057] The liquid cooling channel 131 is a hollow structure. Coolant flows into the cooling channel through the coolant inlet 120 of the motor housing 12 and fully contacts the stator 14 within the cooling channel. Within the cooling channel 131, the coolant directly contacts the coils, iron core, and other components of the stator 14, eliminating any intervening dielectric material. Furthermore, the first adhesive layer 130, the second adhesive layer 132, and the liquid cooling channel 131 encase the stator 14. The first and second adhesive layers 130, 132 offer greater thermal and cooling conductivity than conventional steel, effectively enhancing heat exchange. After heat exchange, the coolant flows out through the coolant outlet 121 of the motor housing 12.

[0058] See also Figure 3 As shown, Figure 3 A schematic diagram of the three-dimensional structure of an embodiment of a motor is shown.

[0059] In some embodiments, the first glue injection process in step S100 and the second glue injection process in step S110 include: injecting liquid curing glue above the accommodating space 13 formed by the outer shell 12 and the inner shell 11 .

[0060] In the embodiment of the present application, injection is performed from above before the motor is assembled. For example, when the upper housing 16 is not installed, the first glue injection process (step S100), the hot melt injection process (step S110), and the second glue injection process (step S120) are performed to inject the solidified glue and liquid hot melt into the opening where the upper housing 16 is not installed. Since the opening has a larger diameter, the glue injection efficiency can be effectively improved.

[0061] In some embodiments, the discharge process in step S140 includes: the liquid hot melt material is discharged along the cooling liquid outlet 121 or the cooling liquid inlet 120 .

[0062] In the embodiment of the present application, when the solidified hot melt material melts, a second adhesive layer 132 is provided on the hot melt material, so that the hot melt material is discharged along the cooling liquid inlet 120 or the cooling liquid outlet 121 connected to the cooling liquid channel 131. For example, the cooling liquid inlet 120 and the cooling liquid outlet 121 are connected to the cooling liquid channel 131 and are discharged along the first direction ( Figure 2 The Z direction is shown in the middle of the liquid cooling channel 131.

[0063] See also Figure 4 As shown, Figure 4 The process of an embodiment of a method for manufacturing a pipe-free liquid cooling structure provided by the present application is shown. Figure 2 .

[0064] In some embodiments, the step S200 of installing the mold 15 is further included. The mold 15 installation step includes installing the mold 15 on the outer shell 12, wherein the mold 15 is arranged along the first direction ( Figure 2 The curing glue injected in the first injection process is along the first direction ( Figure 2 The Z direction is shown in FIG. 1 ) and injected above the mold 15 .

[0065] In the embodiment of the present application, before the first glue injection process in step S100, the mold 15 is first installed so that the cured glue injected in the first glue injection process can be located on the mold 15, thereby making the total height of the first glue layer 130, the liquid cooling channel 131 and the second glue layer 132 equal to the height of the inner shell 11, and completely filling the accommodating space 13.

[0066] Exemplarily, the process further includes step S210, a mold 15 removal process, in which the mold 15 is separated from the outer shell 12 and removed. Step S210, the mold 15 removal process can also be performed during step S110, when the hot melt material injection process is performed. After the cured adhesive forms the first adhesive layer 130, the mold 15 can be removed, and the hot melt material can be supported by the first adhesive layer 130.

[0067] It is also possible to combine the second glue injection process in step S120 Figure 4 As shown, after the second adhesive layer 132 is formed, the accommodating space 13 is filled and then the mold 15 is removed. Alternatively, after the ejection process in step S140 , the liquid cooling channel 131 is formed and then the mold 15 is removed.

[0068] In some embodiments, the mold 15 is made of POM.

[0069] In the present embodiment, POM (Poly Oxy Methylene), a thermoplastic used in engineering, is used as the material for the mold 15. It exhibits excellent release properties and a non-adhesive property, enabling easy demolding after the adhesive has cured. Furthermore, POM exhibits high rigidity and resistance to deformation, enabling it to cure adhesives effectively without deforming.

[0070] In some embodiments, the injection temperature of the first injection process and the second injection process ranges from 40°C to 60°C.

[0071] In the embodiments of the present application, the glue injection process requires injecting the curing glue and allowing it to solidify evenly. Controlling the temperature between 40°C and 60°C during the injection process can effectively ensure the stability of the curing glue. For example, when the curing glue is UV glue, controlling the temperature at around 50°C can effectively maintain the fluidity of the UV glue, facilitating glue injection and smoothing after injection.

[0072] Among them, the first glue injection process in step S100, the hot melt material injection process in step S110 and the second glue injection process in step S120 all need to be left to solidify. Furthermore, in the first glue injection process and the second glue injection process, the curing glue needs to be defoamed before solidification.

[0073] See also Figure 5 As shown, Figure 5 A top view of an embodiment of a motor provided by the present application is shown.

[0074] In some embodiments, combined Figure 2 、 Figure 3 and Figure 5 As shown, the present application also provides a motor, which uses the above-mentioned pipeline-free liquid cooling structure manufacturing method. The motor includes: an outer shell 12, a motor core shaft 10, an inner shell 11, an accommodating space 13, and a stator 14.

[0075] The outer shell 12 has a coolant inlet 120 and a coolant outlet 121; the motor core shaft 10 is along the first direction ( Figure 2 The inner housing 11 is arranged around the outer periphery of the motor core shaft 10 and is located inside the outer housing 12; the outer housing 12 and the inner housing 11 enclose a receiving space 13; the stator 14 is arranged along the circumferential direction ( Figure 5 (as shown in the direction O in the middle) are arranged in the accommodating space 13 at intervals.

[0076] The first adhesive layer 130, the liquid cooling channel 131 and the second adhesive layer 132 are also included. The first adhesive layer 130 is located in the accommodating space 13 and is arranged along the first direction ( Figure 2 The liquid cooling channel 131 is located in the accommodating space 13 and is arranged along the first direction ( Figure 2 The second adhesive layer 132 is located in the accommodating space 13 and is arranged along the first direction ( Figure 2 The stator 14 is located on the upper portion of the stator 14 (as shown in the Z direction), wherein the first adhesive layer 130 , the liquid cooling channel 131 and the second adhesive layer 132 jointly cover the stator 14 .

[0077] In this embodiment of the present application, the motor does not require heat exchange pipes. Instead, heat is exchanged via the liquid cooling channel 131 between the first adhesive layer 130 and the second adhesive layer 132. The first adhesive layer 130 and the second adhesive layer 132 also have excellent thermal and cold conductivity, effectively saving the weight and cost of the motor. Furthermore, the cooling channel allows coolant to flow through, allowing the stator 14 to directly contact the coolant, further enhancing its heat exchange efficiency.

[0078] For example, the stator 14 is circumferentially ( Figure 5 The motor shaft 10 is nested within the inner housing 11, which is nested within the outer housing 12, forming a toroidal shaped accommodation space 13. The first adhesive layer 130 formed in the first adhesive injection process (step S100) and the second adhesive layer 132 formed in the second adhesive injection process (step S120) are both toroidal and fill the gap in accommodation space 13.

[0079] Secondly, the packaging process of the stator 14 is different from the prior art, where a heat exchange pipe is reserved before the stator 14 is installed. The heat exchange method of the first adhesive layer 130, the second adhesive layer 132, and the liquid cooling channel 131 can effectively simplify its structure, making the packaging of the stator 14 simpler. This also makes the motor structure simpler while achieving good heat exchange effect.

[0080] In some embodiments, the first adhesive layer 130 is arranged along the first direction ( Figure 2 The height of the liquid cooling channel 131 along the first direction ( Figure 2 The height of the second adhesive layer 132 along the first direction ( Figure 2 The height of the inner shell 11 along the first direction ( Figure 2 The heights of the two components (shown in the Z direction) are equal.

[0081] In the embodiment of the present application, the first preset value, the second preset value, and the third preset value are set so that the heights of the first adhesive layer 130, the liquid cooling channel 131, and the second adhesive layer 132 can be adjusted according to actual production needs. The total height of the first adhesive layer 130, the liquid cooling channel 131, and the second adhesive layer 132 is equal to the height of the inner housing 11, so that the first adhesive layer 130, the liquid cooling channel 131, and the second adhesive layer 132 can completely fill the accommodating space 13. For example, when the height of the inner housing 11 is 20 cm, the first preset value of the first adhesive layer 130 is 10 cm, the second preset value of the liquid cooling channel 131 is 8 cm, and the third preset value of the second adhesive layer 132 is 10 cm.

[0082] However, the present application does not limit the first preset value, the second preset value, and the third preset value, and they can be adjusted according to the actual size of the motor internal accommodation space 13. For example, the first preset value is 8CM, the second preset value is 5CM, and the third preset value is 5CM.

[0083] The above description is only an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, should be included in the scope of protection of the present invention.

Claims

1. A method for manufacturing a pipeline-free liquid cooling structure, applied to a motor, wherein the motor comprises a motor core shaft, an inner shell and an outer shell, the outer shell having a coolant inlet and a coolant outlet, the motor core shaft passing through the inner shell, wherein: The inner shell and the outer shell enclose a housing space, and stators are arranged in the housing space at intervals along the circumferential direction. The method for manufacturing the pipeline-free liquid cooling structure includes: A first glue injection step is to inject liquid curing glue into the accommodating space; a hot melt material injection step, wherein after the curing adhesive is cured to form a first adhesive layer, a liquid hot melt material is injected into the accommodating space and positioned on the cured curing adhesive; A second glue injection step, after the hot melt material solidifies, injecting the liquid curing glue into the accommodating space and positioning it on the solidified hot melt material; wherein the curing glue and the hot melt material jointly immerse the stator; a heating step, wherein after the curing adhesive is cured to form a second adhesive layer, the cured hot melt material is heated to melt the cured hot melt material into a liquid state; The discharge process discharges the liquid hot melt material from the accommodating space and forms the liquid cooling channel, wherein the coolant can flow into and through the liquid cooling channel along the coolant inlet, and the coolant can flow out of the liquid cooling channel along the coolant outlet.

2. The method for manufacturing a pipeline-free liquid cooling structure according to claim 1, characterized in that: The first glue injection process and the second glue injection process include: injecting the liquid curing glue along the upper part of the accommodating space enclosed by the outer shell and the inner shell.

3. The method for manufacturing a pipeline-free liquid cooling structure according to claim 1, characterized in that: The discharging process includes: discharging the liquid hot melt material along the cooling liquid outlet or the cooling liquid inlet.

4. The method for manufacturing a pipeline-free liquid cooling structure according to claim 1, characterized in that: It also includes a mold installation process, which includes installing the mold on the outer shell, wherein the mold is located below the inner shell and the accommodating space along a first direction; and the curing glue injected by the first glue injection process is injected above the mold along the first direction.

5. The method for manufacturing a pipeline-free liquid cooling structure according to claim 4, characterized in that: The material of the mold is POM.

6. The method for manufacturing a pipeline-free liquid cooling structure according to claim 1, characterized in that: The injection temperature range of the first injection process and the second injection process is 40° C. to 60° C.

7. A motor, using the method for manufacturing a pipeless liquid cooling structure according to any one of claims 1 to 6, characterized in that: The motor comprises: an outer shell having a coolant inlet and a coolant outlet; a motor core shaft, the motor core shaft passing through the outer shell along a first direction; An inner housing, the inner housing being arranged around the outer periphery of the motor core shaft and located inside the outer housing; An accommodating space, the outer shell and the inner shell enclose an accommodating space; stators, the stators being arranged in the accommodating space at intervals along the circumferential direction; a first adhesive layer, the first adhesive layer being located in the accommodating space and located at a lower portion of the stator along the first direction; a liquid cooling channel, the liquid cooling channel being located in the accommodating space and in the middle of the stator along the first direction and being in communication with the cooling liquid inlet and the cooling liquid outlet; A second glue layer is located in the accommodating space and on the upper portion of the stator along the first direction, wherein the first glue layer, the liquid cooling channel, and the second glue layer jointly cover the stator.

8. The motor according to claim 7, characterized in that The height of the first glue layer along the first direction is a first preset value, the height of the liquid cooling channel along the first direction is a second preset value, and the height of the second glue layer along the first direction is a third preset value, wherein the sum of the first preset value, the second preset value and the third preset value is equal to the height of the inner shell along the first direction.

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